| <html><head><title>ovm_object</title><link rel="stylesheet" type="text/css" href="../../styles/main.css"><script language=JavaScript src="../../javascript/main.js"></script></head><body class="FramedContentPage" onLoad="NDOnLoad()"><script language=JavaScript><!-- |
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| <div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="ovm_object" href="../../../../src/base/ovm_object.svh">ovm_object</a></h1><div class=CBody><p>The ovm_object class is the base class for all OVM data and hierarchical classes. Its primary role is to define a set of methods for such common operations as <a href="#ovm_object.create" class=LMethod id=link45 onMouseOver="ShowTip(event, 'tt13', 'link45')" onMouseOut="HideTip('tt13')">create</a>, <a href="#ovm_object.copy" class=LMethod id=link46 onMouseOver="ShowTip(event, 'tt21', 'link46')" onMouseOut="HideTip('tt21')">copy</a>, <a href="#ovm_object.compare" class=LMethod id=link47 onMouseOver="ShowTip(event, 'tt23', 'link47')" onMouseOut="HideTip('tt23')">compare</a>, <a href="#ovm_object.print" class=LMethod id=link48 onMouseOver="ShowTip(event, 'tt15', 'link48')" onMouseOut="HideTip('tt15')">print</a>, and <a href="#ovm_object.record" class=LMethod id=link49 onMouseOver="ShowTip(event, 'tt19', 'link49')" onMouseOut="HideTip('tt19')">record</a>. Classes deriving from ovm_object must implement the pure virtual methods such as <a href="#ovm_object.create" class=LMethod id=link50 onMouseOver="ShowTip(event, 'tt13', 'link50')" onMouseOut="HideTip('tt13')">create</a> and <a href="#ovm_object.get_type_name" class=LMethod id=link51 onMouseOver="ShowTip(event, 'tt12', 'link51')" onMouseOut="HideTip('tt12')">get_type_name</a>.</p> |
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| <!--START_ND_SUMMARY index=0--> |
| <div class=Summary><div class=STitle>Summary</div><div class=SBorder><table border=0 cellspacing=0 cellpadding=0 class=STable> |
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| <tr class="SClass"><td colspan=2 class=SEntry><a href="#ovm_object" id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">ovm_object</a></td></tr> |
| <tr class=SMain><td colspan=2 class=SWideDescription>The ovm_object class is the base class for all OVM data and hierarchical classes. </td></tr> |
| <tr class="SPrototype SIndent1"> |
| <td colspan=2 class="SEntry SIndent1">Class Declaration</td><tr><tr class="SPrototype SIndent1"><td colspan=2 class=SDescription><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual class ovm_object extends ovm_void</td></tr></table></blockquote></td></tr> |
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| <tr class="SMethod SIndent1 SMarked"><td class=SEntry><a href="#ovm_object.new" id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">new</a></td><td class=SDescription>Creates a new ovm_object with the given instance <i>name</i>. </td></tr> |
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| <tr class="SGroup SIndent1"><td class=SEntry><a href="#ovm_object.Seeding" >Seeding</a></td><td class=SDescription></td></tr> |
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| <tr class="SVariable SIndent2"><td class=SEntry><a href="#ovm_object.use_ovm_seeding" id=link3 onMouseOver="ShowTip(event, 'tt3', 'link3')" onMouseOut="HideTip('tt3')">use_ovm_seeding</a></td><td class=SDescription>This bit enables or disables the OVM seeding mechanism. </td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#ovm_object.reseed" id=link4 onMouseOver="ShowTip(event, 'tt4', 'link4')" onMouseOut="HideTip('tt4')">reseed</a></td><td class=SDescription>Calls <i>srandom</i> on the object to reseed the object using the OVM seeding mechanism, which sets the seed based on type name and instance name instead of based on instance position in a thread.</td></tr> |
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| <tr class="SGroup SIndent1"><td class=SEntry><a href="#ovm_object.Identification" >Identification</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.set_name" id=link5 onMouseOver="ShowTip(event, 'tt5', 'link5')" onMouseOut="HideTip('tt5')">set_name</a></td><td class=SDescription>Sets the instance name of this object, overwriting any previously given name.</td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#ovm_object.get_name" id=link6 onMouseOver="ShowTip(event, 'tt6', 'link6')" onMouseOut="HideTip('tt6')">get_name</a></td><td class=SDescription>Returns the name of the object, as provided by the <i>name</i> argument in the <a href="#ovm_object.new" class=LMethod id=link7 onMouseOver="ShowTip(event, 'tt2', 'link7')" onMouseOut="HideTip('tt2')">new</a> constructor or <a href="#ovm_object.set_name" class=LMethod id=link8 onMouseOver="ShowTip(event, 'tt5', 'link8')" onMouseOut="HideTip('tt5')">set_name</a> method.</td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.get_full_name" id=link9 onMouseOver="ShowTip(event, 'tt7', 'link9')" onMouseOut="HideTip('tt7')">get_full_name</a></td><td class=SDescription>Returns the full hierarchical name of this object. </td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#ovm_object.get_inst_id" id=link10 onMouseOver="ShowTip(event, 'tt8', 'link10')" onMouseOut="HideTip('tt8')">get_inst_id</a></td><td class=SDescription>Returns the object’s unique, numeric instance identifier.</td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.get_inst_count" id=link11 onMouseOver="ShowTip(event, 'tt9', 'link11')" onMouseOut="HideTip('tt9')">get_inst_count</a></td><td class=SDescription>Returns the current value of the instance counter, which represents the total number of ovm_object-based objects that have been allocated in simulation. </td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#ovm_object.get_type" id=link12 onMouseOver="ShowTip(event, 'tt10', 'link12')" onMouseOut="HideTip('tt10')">get_type</a></td><td class=SDescription>Returns the type-proxy (wrapper) for this object. </td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.get_object_type" id=link13 onMouseOver="ShowTip(event, 'tt11', 'link13')" onMouseOut="HideTip('tt11')">get_object_type</a></td><td class=SDescription>Returns the type-proxy (wrapper) for this object. </td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#ovm_object.get_type_name" id=link14 onMouseOver="ShowTip(event, 'tt12', 'link14')" onMouseOut="HideTip('tt12')">get_type_name</a></td><td class=SDescription>This function returns the type name of the object, which is typically the type identifier enclosed in quotes. </td></tr> |
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| <tr class="SGroup SIndent1"><td class=SEntry><a href="#ovm_object.Creation" >Creation</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.create" id=link15 onMouseOver="ShowTip(event, 'tt13', 'link15')" onMouseOut="HideTip('tt13')">create</a></td><td class=SDescription>The create method allocates a new object of the same type as this object and returns it via a base ovm_object handle. </td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#ovm_object.clone" id=link16 onMouseOver="ShowTip(event, 'tt14', 'link16')" onMouseOut="HideTip('tt14')">clone</a></td><td class=SDescription>The clone method creates and returns an exact copy of this object.</td></tr> |
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| <tr class="SGroup SIndent1"><td class=SEntry><a href="#ovm_object.Printing" >Printing</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.print" id=link17 onMouseOver="ShowTip(event, 'tt15', 'link17')" onMouseOut="HideTip('tt15')">print</a></td><td class=SDescription>The print method deep-prints this object’s properties in a format and manner governed by the given <i>printer</i> argument; if the <i>printer</i> argument is not provided, the global <a href="ovm_object_globals-svh.html#ovm_default_printer" class=LVariable id=link18 onMouseOver="ShowTip(event, 'tt16', 'link18')" onMouseOut="HideTip('tt16')">ovm_default_printer</a> is used. </td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#ovm_object.sprint" id=link19 onMouseOver="ShowTip(event, 'tt17', 'link19')" onMouseOut="HideTip('tt17')">sprint</a></td><td class=SDescription>The <i>sprint</i> method works just like the <a href="#ovm_object.print" class=LMethod id=link20 onMouseOver="ShowTip(event, 'tt15', 'link20')" onMouseOut="HideTip('tt15')">print</a> method, except the output is returned in a string rather than displayed.</td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.do_print" id=link21 onMouseOver="ShowTip(event, 'tt18', 'link21')" onMouseOut="HideTip('tt18')">do_print</a></td><td class=SDescription>The <i>do_print</i> method is the user-definable hook called by <a href="#ovm_object.print" class=LMethod id=link22 onMouseOver="ShowTip(event, 'tt15', 'link22')" onMouseOut="HideTip('tt15')">print</a> and <a href="#ovm_object.sprint" class=LMethod id=link23 onMouseOver="ShowTip(event, 'tt17', 'link23')" onMouseOut="HideTip('tt17')">sprint</a> that allows users to customize what gets printed or sprinted beyond the field information provided by the <`ovm_field_*> macros.</td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#ovm_object.convert2string" >convert2string</a></td><td class=SDescription>This virtual function is a user-definable hook, called directly by the user, that allows users to provide object information in the form of a string. </td></tr> |
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| <tr class="SGeneric SIndent2"><td class=SEntry><a href="#ovm_object.Fields_declared_in`ovm_field_*macros,if_used,will_not" >Fields declared in <`ovm_field_*> macros, if used, will not</a></td><td class=SDescription>automatically appear in calls to convert2string.</td></tr> |
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| <tr class="SGroup SIndent1"><td class=SEntry><a href="#ovm_object.Recording" >Recording</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.record" id=link24 onMouseOver="ShowTip(event, 'tt19', 'link24')" onMouseOut="HideTip('tt19')">record</a></td><td class=SDescription>The record method deep-records this object’s properties according to an optional <i>recorder</i> policy. </td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#ovm_object.do_record" id=link25 onMouseOver="ShowTip(event, 'tt20', 'link25')" onMouseOut="HideTip('tt20')">do_record</a></td><td class=SDescription>The do_record method is the user-definable hook called by the <a href="#ovm_object.record" class=LMethod id=link26 onMouseOver="ShowTip(event, 'tt19', 'link26')" onMouseOut="HideTip('tt19')">record</a> method. </td></tr> |
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| <tr class="SGroup SIndent1"><td class=SEntry><a href="#ovm_object.Copying" >Copying</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.copy" id=link27 onMouseOver="ShowTip(event, 'tt21', 'link27')" onMouseOut="HideTip('tt21')">copy</a></td><td class=SDescription>The copy method returns a deep copy of this object.</td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#ovm_object.do_copy" id=link28 onMouseOver="ShowTip(event, 'tt22', 'link28')" onMouseOut="HideTip('tt22')">do_copy</a></td><td class=SDescription>The do_copy method is the user-definable hook called by the copy method. </td></tr> |
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| <tr class="SGroup SIndent1"><td class=SEntry><a href="#ovm_object.Comparing" >Comparing</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.compare" id=link29 onMouseOver="ShowTip(event, 'tt23', 'link29')" onMouseOut="HideTip('tt23')">compare</a></td><td class=SDescription>The compare method deep compares this data object with the object provided in the <i>rhs</i> (right-hand side) argument.</td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#ovm_object.do_compare" id=link30 onMouseOver="ShowTip(event, 'tt24', 'link30')" onMouseOut="HideTip('tt24')">do_compare</a></td><td class=SDescription>The do_compare method is the user-definable hook called by the <a href="#ovm_object.compare" class=LMethod id=link31 onMouseOver="ShowTip(event, 'tt23', 'link31')" onMouseOut="HideTip('tt23')">compare</a> method. </td></tr> |
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| <tr class="SGroup SIndent1"><td class=SEntry><a href="#ovm_object.Packing" >Packing</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.pack" id=link32 onMouseOver="ShowTip(event, 'tt25', 'link32')" onMouseOut="HideTip('tt25')">pack</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.pack_bytes" id=link33 onMouseOver="ShowTip(event, 'tt26', 'link33')" onMouseOut="HideTip('tt26')">pack_bytes</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.pack_ints" id=link34 onMouseOver="ShowTip(event, 'tt27', 'link34')" onMouseOut="HideTip('tt27')">pack_ints</a></td><td class=SDescription>The pack methods bitwise-concatenate this object’s properties into an array of bits, bytes, or ints. </td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#ovm_object.do_pack" id=link35 onMouseOver="ShowTip(event, 'tt28', 'link35')" onMouseOut="HideTip('tt28')">do_pack</a></td><td class=SDescription>The do_pack method is the user-definable hook called by the <a href="#ovm_object.pack" class=LMethod id=link36 onMouseOver="ShowTip(event, 'tt25', 'link36')" onMouseOut="HideTip('tt25')">pack</a> methods. </td></tr> |
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| <tr class="SGroup SIndent1"><td class=SEntry><a href="#ovm_object.Unpacking" >Unpacking</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.unpack" id=link37 onMouseOver="ShowTip(event, 'tt29', 'link37')" onMouseOut="HideTip('tt29')">unpack</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.unpack_bytes" id=link38 onMouseOver="ShowTip(event, 'tt30', 'link38')" onMouseOut="HideTip('tt30')">unpack_bytes</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.unpack_ints" id=link39 onMouseOver="ShowTip(event, 'tt31', 'link39')" onMouseOut="HideTip('tt31')">unpack_ints</a></td><td class=SDescription>The unpack methods extract property values from an array of bits, bytes, or ints. </td></tr> |
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| <tr class="SMethod SIndent2 SMarked"><td class=SEntry><a href="#ovm_object.do_unpack" id=link40 onMouseOver="ShowTip(event, 'tt32', 'link40')" onMouseOut="HideTip('tt32')">do_unpack</a></td><td class=SDescription>The do_unpack method is the user-definable hook called by the <a href="#ovm_object.unpack" class=LMethod id=link41 onMouseOver="ShowTip(event, 'tt29', 'link41')" onMouseOut="HideTip('tt29')">unpack</a> method. </td></tr> |
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| <tr class="SGroup SIndent1"><td class=SEntry><a href="#ovm_object.Configuration" >Configuration</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.set_int_local" id=link42 onMouseOver="ShowTip(event, 'tt33', 'link42')" onMouseOut="HideTip('tt33')">set_int_local</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.set_string_local" id=link43 onMouseOver="ShowTip(event, 'tt34', 'link43')" onMouseOut="HideTip('tt34')">set_string_local</a></td><td class=SDescription></td></tr> |
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| <tr class="SMethod SIndent2"><td class=SEntry><a href="#ovm_object.set_object_local" id=link44 onMouseOver="ShowTip(event, 'tt35', 'link44')" onMouseOut="HideTip('tt35')">set_object_local</a></td><td class=SDescription>These methods provide write access to integral, string, and ovm_object-based properties indexed by a <i>field_name</i> string. </td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.new" href="../../../../src/base/ovm_object.svh">new</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function new (</td><td class=PType nowrap>string </td><td class=PParameter nowrap>name</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>""</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>Creates a new ovm_object with the given instance <i>name</i>. If <i>name</i> is not supplied, the object is unnamed.</p></div></div></div> |
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| <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="ovm_object.Seeding" href="../../../../src/base/ovm_object.svh">Seeding</a></h3></div></div> |
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| <div class="CVariable"><div class=CTopic><h3 class=CTitle><a name="ovm_object.use_ovm_seeding" href="../../../../src/base/ovm_object.svh">use_ovm_seeding</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>static bit use_ovm_seeding = 1</td></tr></table></blockquote><div class=CBody><p>This bit enables or disables the OVM seeding mechanism. It globally affects the operation of the reseed method.</p><p>When enabled, OVM-based objects are seeded based on their type and full hierarchical name rather than allocation order. This improves random stability for objects whose instance names are unique across each type. The <a href="ovm_component-svh.html#ovm_component" class=LClass id=link52 onMouseOver="ShowTip(event, 'tt36', 'link52')" onMouseOut="HideTip('tt36')">ovm_component</a> class is an example of a type that has a unique instance name.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.reseed" href="../../../../src/base/ovm_object.svh">reseed</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>function void reseed ()</td></tr></table></blockquote><div class=CBody><p>Calls <i>srandom</i> on the object to reseed the object using the OVM seeding mechanism, which sets the seed based on type name and instance name instead of based on instance position in a thread.</p><p>If the <a href="#ovm_object.use_ovm_seeding" class=LVariable id=link53 onMouseOver="ShowTip(event, 'tt3', 'link53')" onMouseOut="HideTip('tt3')">use_ovm_seeding</a> static variable is set to 0, then reseed() does not perform any function.</p></div></div></div> |
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| <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="ovm_object.Identification" href="../../../../src/base/ovm_object.svh">Identification</a></h3></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.set_name" href="../../../../src/base/ovm_object.svh">set_name</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void set_name (</td><td class=PType nowrap>string </td><td class=PParameter nowrap>name</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>Sets the instance name of this object, overwriting any previously given name.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.get_name" href="../../../../src/base/ovm_object.svh">get_name</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual function string get_name ()</td></tr></table></blockquote><div class=CBody><p>Returns the name of the object, as provided by the <i>name</i> argument in the <a href="#ovm_object.new" class=LMethod id=link54 onMouseOver="ShowTip(event, 'tt2', 'link54')" onMouseOut="HideTip('tt2')">new</a> constructor or <a href="#ovm_object.set_name" class=LMethod id=link55 onMouseOver="ShowTip(event, 'tt5', 'link55')" onMouseOut="HideTip('tt5')">set_name</a> method.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.get_full_name" href="../../../../src/base/ovm_object.svh">get_full_name</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual function string get_full_name ()</td></tr></table></blockquote><div class=CBody><p>Returns the full hierarchical name of this object. The default implementation is the same as <a href="#ovm_object.get_name" class=LMethod id=link56 onMouseOver="ShowTip(event, 'tt6', 'link56')" onMouseOut="HideTip('tt6')">get_name</a>, as ovm_objects do not inherently possess hierarchy.</p><p>Objects possessing hierarchy, such as <a href="ovm_component-svh.html#ovm_component" class=LClass id=link57 onMouseOver="ShowTip(event, 'tt36', 'link57')" onMouseOut="HideTip('tt36')">ovm_components</a>, override the default implementation. Other objects might be associated with component hierarchy but are not themselves components. For example, <a href="../methodology/sequences/ovm_sequence-svh.html#ovm_sequence#(REQ,RSP)" class=LClass id=link58 onMouseOver="ShowTip(event, 'tt37', 'link58')" onMouseOut="HideTip('tt37')">ovm_sequence #(REQ,RSP)</a> classes are typically associated with a <a href="../methodology/sequences/ovm_sequencer-svh.html#ovm_sequencer#(REQ,RSP)" class=LClass id=link59 onMouseOver="ShowTip(event, 'tt38', 'link59')" onMouseOut="HideTip('tt38')">ovm_sequencer #(REQ,RSP)</a>. In this case, it is useful to override get_full_name to return the sequencer’s full name concatenated with the sequence’s name. This provides the sequence a full context, which is useful when debugging.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.get_inst_id" href="../../../../src/base/ovm_object.svh">get_inst_id</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual function int get_inst_id ()</td></tr></table></blockquote><div class=CBody><p>Returns the object’s unique, numeric instance identifier.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.get_inst_count" href="../../../../src/base/ovm_object.svh">get_inst_count</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>static function int get_inst_count()</td></tr></table></blockquote><div class=CBody><p>Returns the current value of the instance counter, which represents the total number of ovm_object-based objects that have been allocated in simulation. The instance counter is used to form a unique numeric instance identifier.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.get_type" href="../../../../src/base/ovm_object.svh">get_type</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>static function ovm_object_wrapper get_type ()</td></tr></table></blockquote><div class=CBody><p>Returns the type-proxy (wrapper) for this object. The <a href="ovm_factory-svh.html#ovm_factory" class=LClass id=link60 onMouseOver="ShowTip(event, 'tt39', 'link60')" onMouseOut="HideTip('tt39')">ovm_factory</a>’s type-based override and creation methods take arguments of <a href="ovm_factory-svh.html#ovm_object_wrapper" class=LClass id=link61 onMouseOver="ShowTip(event, 'tt40', 'link61')" onMouseOut="HideTip('tt40')">ovm_object_wrapper</a>. This method, if implemented, can be used as convenient means of supplying those arguments.</p><p>The default implementation of this method produces an error and returns null. To enable use of this method, a user’s subtype must implement a version that returns the subtype’s wrapper.</p><h4 class=CHeading>For example</h4><blockquote><pre>class cmd extends ovm_object; |
| typedef ovm_object_registry #(cmd) type_id; |
| static function type_id get_type(); |
| return type_id::get(); |
| endfunction |
| endclass</pre></blockquote><h4 class=CHeading>Then, to use</h4><blockquote><pre>factory.set_type_override(cmd::get_type(),subcmd::get_type());</pre></blockquote><p>This function is implemented by the `ovm_*_utils macros, if employed.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.get_object_type" href="../../../../src/base/ovm_object.svh">get_object_type</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual function ovm_object_wrapper get_object_type ()</td></tr></table></blockquote><div class=CBody><p>Returns the type-proxy (wrapper) for this object. The <a href="ovm_factory-svh.html#ovm_factory" class=LClass id=link62 onMouseOver="ShowTip(event, 'tt39', 'link62')" onMouseOut="HideTip('tt39')">ovm_factory</a>’s type-based override and creation methods take arguments of <a href="ovm_factory-svh.html#ovm_object_wrapper" class=LClass id=link63 onMouseOver="ShowTip(event, 'tt40', 'link63')" onMouseOut="HideTip('tt40')">ovm_object_wrapper</a>. This method, if implemented, can be used as convenient means of supplying those arguments. This method is the same as the static <a href="#ovm_object.get_type" class=LMethod id=link64 onMouseOver="ShowTip(event, 'tt10', 'link64')" onMouseOut="HideTip('tt10')">get_type</a> method, but uses an already allocated object to determine the type-proxy to access (instead of using the static object.</p><p>The default implementation of this method does a factory lookup of the proxy using the return value from <a href="#ovm_object.get_type_name" class=LMethod id=link65 onMouseOver="ShowTip(event, 'tt12', 'link65')" onMouseOut="HideTip('tt12')">get_type_name</a>. If the type returned by <a href="#ovm_object.get_type_name" class=LMethod id=link66 onMouseOver="ShowTip(event, 'tt12', 'link66')" onMouseOut="HideTip('tt12')">get_type_name</a> is not registered with the factory, then a null handle is returned.</p><h4 class=CHeading>For example</h4><blockquote><pre>class cmd extends ovm_object; |
| typedef ovm_object_registry #(cmd) type_id; |
| static function type_id get_type(); |
| return type_id::get(); |
| endfunction |
| virtual function type_id get_object_type(); |
| return type_id::get(); |
| endfunction |
| endclass</pre></blockquote><p>This function is implemented by the `ovm_*_utils macros, if employed.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.get_type_name" href="../../../../src/base/ovm_object.svh">get_type_name</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual function string get_type_name ()</td></tr></table></blockquote><div class=CBody><p>This function returns the type name of the object, which is typically the type identifier enclosed in quotes. It is used for various debugging functions in the library, and it is used by the factory for creating objects.</p><p>This function must be defined in every derived class.</p><h4 class=CHeading>A typical implementation is as follows</h4><blockquote><pre>class mytype extends ovm_object; |
| ... |
| const static string type_name = "mytype"; |
| |
| virtual function string get_type_name(); |
| return type_name; |
| endfunction</pre></blockquote><p>We define the <type_name> static variable to enable access to the type name without need of an object of the class, i.e., to enable access via the scope operator, <i>mytype::type_name</i>.</p></div></div></div> |
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| <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="ovm_object.Creation" href="../../../../src/base/ovm_object.svh">Creation</a></h3></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.create" href="../../../../src/base/ovm_object.svh">create</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function ovm_object create (</td><td class=PType nowrap>string </td><td class=PParameter nowrap>name</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>""</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The create method allocates a new object of the same type as this object and returns it via a base ovm_object handle. Every class deriving from ovm_object, directly or indirectly, must implement the create method.</p><h4 class=CHeading>A typical implementation is as follows</h4><blockquote><pre>class mytype extends ovm_object; |
| ... |
| virtual function ovm_object create(string name=""); |
| mytype t = new(name); |
| return t; |
| endfunction</pre></blockquote></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.clone" href="../../../../src/base/ovm_object.svh">clone</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual function ovm_object clone ()</td></tr></table></blockquote><div class=CBody><p>The clone method creates and returns an exact copy of this object.</p><p>The default implementation calls <a href="#ovm_object.create" class=LMethod id=link67 onMouseOver="ShowTip(event, 'tt13', 'link67')" onMouseOut="HideTip('tt13')">create</a> followed by <a href="#ovm_object.copy" class=LMethod id=link68 onMouseOver="ShowTip(event, 'tt21', 'link68')" onMouseOut="HideTip('tt21')">copy</a>. As clone is virtual, derived classes may override this implementation if desired.</p></div></div></div> |
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| <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="ovm_object.Printing" href="../../../../src/base/ovm_object.svh">Printing</a></h3></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.print" href="../../../../src/base/ovm_object.svh">print</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function void print (</td><td class=PType nowrap>ovm_printer </td><td class=PParameter nowrap>printer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The print method deep-prints this object’s properties in a format and manner governed by the given <i>printer</i> argument; if the <i>printer</i> argument is not provided, the global <a href="ovm_object_globals-svh.html#ovm_default_printer" class=LVariable id=link69 onMouseOver="ShowTip(event, 'tt16', 'link69')" onMouseOut="HideTip('tt16')">ovm_default_printer</a> is used. See <a href="ovm_printer-svh.html#ovm_printer" class=LClass id=link70 onMouseOver="ShowTip(event, 'tt41', 'link70')" onMouseOut="HideTip('tt41')">ovm_printer</a> for more information on printer output formatting. See also <a href="ovm_printer-svh.html#ovm_line_printer" class=LClass id=link71 onMouseOver="ShowTip(event, 'tt42', 'link71')" onMouseOut="HideTip('tt42')">ovm_line_printer</a>, <a href="ovm_printer-svh.html#ovm_tree_printer" class=LClass id=link72 onMouseOver="ShowTip(event, 'tt43', 'link72')" onMouseOut="HideTip('tt43')">ovm_tree_printer</a>, and <a href="ovm_printer-svh.html#ovm_table_printer" class=LClass id=link73 onMouseOver="ShowTip(event, 'tt44', 'link73')" onMouseOut="HideTip('tt44')">ovm_table_printer</a> for details on the pre-defined printer “policies,” or formatters, provided by the OVM.</p><p>The <i>print</i> method is not virtual and must not be overloaded. To include custom information in the <i>print</i> and <i>sprint</i> operations, derived classes must override the <a href="#ovm_object.do_print" class=LMethod id=link74 onMouseOver="ShowTip(event, 'tt18', 'link74')" onMouseOut="HideTip('tt18')">do_print</a> method and use the provided printer policy class to format the output.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.sprint" href="../../../../src/base/ovm_object.svh">sprint</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function string sprint (</td><td class=PType nowrap>ovm_printer </td><td class=PParameter nowrap>printer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The <i>sprint</i> method works just like the <a href="#ovm_object.print" class=LMethod id=link75 onMouseOver="ShowTip(event, 'tt15', 'link75')" onMouseOut="HideTip('tt15')">print</a> method, except the output is returned in a string rather than displayed.</p><p>The <i>sprint</i> method is not virtual and must not be overloaded. To include additional fields in the <i>print</i> and <i>sprint</i> operation, derived classes must override the <a href="#ovm_object.do_print" class=LMethod id=link76 onMouseOver="ShowTip(event, 'tt18', 'link76')" onMouseOut="HideTip('tt18')">do_print</a> method and use the provided printer policy class to format the output. The printer policy will manage all string concatenations and provide the string to <i>sprint</i> to return to the caller.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.do_print" href="../../../../src/base/ovm_object.svh">do_print</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void do_print (</td><td class=PType nowrap>ovm_printer </td><td class=PParameter nowrap>printer</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The <i>do_print</i> method is the user-definable hook called by <a href="#ovm_object.print" class=LMethod id=link77 onMouseOver="ShowTip(event, 'tt15', 'link77')" onMouseOut="HideTip('tt15')">print</a> and <a href="#ovm_object.sprint" class=LMethod id=link78 onMouseOver="ShowTip(event, 'tt17', 'link78')" onMouseOut="HideTip('tt17')">sprint</a> that allows users to customize what gets printed or sprinted beyond the field information provided by the <`ovm_field_*> macros.</p><p>The <i>printer</i> argument is the policy object that governs the format and content of the output. To ensure correct <a href="#ovm_object.print" class=LMethod id=link79 onMouseOver="ShowTip(event, 'tt15', 'link79')" onMouseOut="HideTip('tt15')">print</a> and <a href="#ovm_object.sprint" class=LMethod id=link80 onMouseOver="ShowTip(event, 'tt17', 'link80')" onMouseOut="HideTip('tt17')">sprint</a> operation, and to ensure a consistent output format, the <i>printer</i> must be used by all <a href="#ovm_object.do_print" class=LMethod id=link81 onMouseOver="ShowTip(event, 'tt18', 'link81')" onMouseOut="HideTip('tt18')">do_print</a> implementations. That is, instead of using $display or string concatenations directly, a <i>do_print</i> implementation must call through the <i>printer’s</i> API to add information to be printed or sprinted.</p><h4 class=CHeading>An example implementation of <i>do_print</i> is as follows</h4><blockquote><pre>class mytype extends ovm_object; |
| data_obj data; |
| int f1; |
| virtual function void do_print (ovm_printer printer); |
| super.do_print(printer); |
| printer.print_field("f1", f1, $bits(f1), DEC); |
| printer.print_object("data", data); |
| endfunction</pre></blockquote><h4 class=CHeading>Then, to print and sprint the object, you could write</h4><blockquote><pre>mytype t = new; |
| t.print(); |
| ovm_report_info("Received",t.sprint());</pre></blockquote><p>See <a href="ovm_printer-svh.html#ovm_printer" class=LClass id=link82 onMouseOver="ShowTip(event, 'tt41', 'link82')" onMouseOut="HideTip('tt41')">ovm_printer</a> for information about the printer API.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.convert2string" href="../../../../src/base/ovm_object.svh">convert2string</a></h3><div class=CBody><p>This virtual function is a user-definable hook, called directly by the user, that allows users to provide object information in the form of a string. Unlike <a href="#ovm_object.sprint" class=LMethod id=link83 onMouseOver="ShowTip(event, 'tt17', 'link83')" onMouseOut="HideTip('tt17')">sprint</a>, there is no requirement to use an <a href="ovm_printer-svh.html#ovm_printer" class=LClass id=link84 onMouseOver="ShowTip(event, 'tt41', 'link84')" onMouseOut="HideTip('tt41')">ovm_printer</a> policy object. As such, the format and content of the output is fully customizable, which may be suitable for applications not requiring the consistent formatting offered by the <a href="#ovm_object.print" class=LMethod id=link85 onMouseOver="ShowTip(event, 'tt15', 'link85')" onMouseOut="HideTip('tt15')">print</a>/<a href="#ovm_object.sprint" class=LMethod id=link86 onMouseOver="ShowTip(event, 'tt17', 'link86')" onMouseOut="HideTip('tt17')">sprint</a>/<a href="#ovm_object.do_print" class=LMethod id=link87 onMouseOver="ShowTip(event, 'tt18', 'link87')" onMouseOut="HideTip('tt18')">do_print</a> API.</p></div></div></div> |
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| <div class="CGeneric"><div class=CTopic><h3 class=CTitle><a name="ovm_object.Fields_declared_in`ovm_field_*macros,if_used,will_not" href="../../../../src/base/ovm_object.svh">Fields declared in <`ovm_field_*> macros, if used, will not</a></h3><div class=CBody><p>automatically appear in calls to convert2string.</p><p>An example implementation of convert2string follows.</p><blockquote><pre>class base extends ovm_object; |
| string field = "foo"; |
| virtual function string convert2string(); |
| convert2string = {"base_field=",field}; |
| endfunction |
| endclass |
| |
| class obj2 extends ovm_object; |
| string field = "bar"; |
| virtual function string convert2string(); |
| convert2string = {"child_field=",field}; |
| endfunction |
| endclass |
| |
| class obj extends base; |
| int addr = 'h123; |
| int data = 'h456; |
| bit write = 1; |
| obj2 child = new; |
| virtual function string convert2string(); |
| convert2string = {super.convert2string(), |
| $psprintf(" write=%0d addr=%8h data=%8h ",write,addr,data), |
| child.convert2string()}; |
| endfunction |
| endclass</pre></blockquote><h4 class=CHeading>Then, to display an object, you could write</h4><blockquote><pre>obj o = new; |
| ovm_report_info("BusMaster",{"Sending:\n ",o.convert2string()});</pre></blockquote><h4 class=CHeading>The output will look similar to</h4><blockquote><pre>OVM_INFO @ 0: reporter [BusMaster] Sending: |
| base_field=foo write=1 addr=00000123 data=00000456 child_field=bar</pre></blockquote></div></div></div> |
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| <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="ovm_object.Recording" href="../../../../src/base/ovm_object.svh">Recording</a></h3></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.record" href="../../../../src/base/ovm_object.svh">record</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function void record (</td><td class=PType nowrap>ovm_recorder </td><td class=PParameter nowrap>recorder</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The record method deep-records this object’s properties according to an optional <i>recorder</i> policy. The method is not virtual and must not be overloaded. To include additional fields in the record operation, derived classes should override the <a href="#ovm_object.do_record" class=LMethod id=link88 onMouseOver="ShowTip(event, 'tt20', 'link88')" onMouseOut="HideTip('tt20')">do_record</a> method.</p><p>The optional <i>recorder</i> argument specifies the recording policy, which governs how recording takes place. If a recorder policy is not provided explicitly, then the global <a href="ovm_object_globals-svh.html#ovm_default_recorder" class=LVariable id=link89 onMouseOver="ShowTip(event, 'tt45', 'link89')" onMouseOut="HideTip('tt45')">ovm_default_recorder</a> policy is used. See ovm_recorder for information.</p><p>A simulator’s recording mechanism is vendor-specific. By providing access via a common interface, the ovm_recorder policy provides vendor-independent access to a simulator’s recording capabilities.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.do_record" href="../../../../src/base/ovm_object.svh">do_record</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void do_record (</td><td class=PType nowrap>ovm_recorder </td><td class=PParameter nowrap>recorder</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The do_record method is the user-definable hook called by the <a href="#ovm_object.record" class=LMethod id=link90 onMouseOver="ShowTip(event, 'tt19', 'link90')" onMouseOut="HideTip('tt19')">record</a> method. A derived class should override this method to include its fields in a record operation.</p><p>The <i>recorder</i> argument is policy object for recording this object. A do_record implementation should call the appropriate recorder methods for each of its fields. Vendor-specific recording implementations are encapsulated in the <i>recorder</i> policy, thereby insulating user-code from vendor-specific behavior. See <a href="ovm_recorder-svh.html#ovm_recorder" class=LClass id=link91 onMouseOver="ShowTip(event, 'tt46', 'link91')" onMouseOut="HideTip('tt46')">ovm_recorder</a> for more information.</p><h4 class=CHeading>A typical implementation is as follows</h4><blockquote><pre>class mytype extends ovm_object; |
| data_obj data; |
| int f1; |
| function void do_record (ovm_recorder recorder); |
| recorder.record_field_int("f1", f1, $bits(f1), DEC); |
| recorder.record_object("data", data); |
| endfunction</pre></blockquote></div></div></div> |
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| <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="ovm_object.Copying" href="../../../../src/base/ovm_object.svh">Copying</a></h3></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.copy" href="../../../../src/base/ovm_object.svh">copy</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function void copy (</td><td class=PType nowrap>ovm_object </td><td class=PParameter nowrap>rhs</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The copy method returns a deep copy of this object.</p><p>The copy method is not virtual and should not be overloaded in derived classes. To copy the fields of a derived class, that class should override the <a href="#ovm_object.do_copy" class=LMethod id=link92 onMouseOver="ShowTip(event, 'tt22', 'link92')" onMouseOut="HideTip('tt22')">do_copy</a> method.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.do_copy" href="../../../../src/base/ovm_object.svh">do_copy</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void do_copy (</td><td class=PType nowrap>ovm_object </td><td class=PParameter nowrap>rhs</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The do_copy method is the user-definable hook called by the copy method. A derived class should override this method to include its fields in a copy operation.</p><h4 class=CHeading>A typical implementation is as follows</h4><blockquote><pre>class mytype extends ovm_object; |
| ... |
| int f1; |
| function void do_copy (ovm_object rhs); |
| mytype rhs_; |
| super.do_copy(rhs); |
| $cast(rhs_,rhs); |
| field_1 = rhs_.field_1; |
| endfunction</pre></blockquote><p>The implementation must call <i>super.do_copy</i>, and it must $cast the rhs argument to the derived type before copying.</p></div></div></div> |
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| <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="ovm_object.Comparing" href="../../../../src/base/ovm_object.svh">Comparing</a></h3></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.compare" href="../../../../src/base/ovm_object.svh">compare</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function bit compare (</td><td class=PType nowrap>ovm_object </td><td class=PParameter nowrap>rhs,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>ovm_comparer </td><td class=PParameter nowrap>comparer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The compare method deep compares this data object with the object provided in the <i>rhs</i> (right-hand side) argument.</p><p>The compare method is not virtual and should not be overloaded in derived classes. To compare the fields of a derived class, that class should override the <a href="#ovm_object.do_compare" class=LMethod id=link93 onMouseOver="ShowTip(event, 'tt24', 'link93')" onMouseOut="HideTip('tt24')">do_compare</a> method.</p><p>The optional <i>comparer</i> argument specifies the comparison policy. It allows you to control some aspects of the comparison operation. It also stores the results of the comparison, such as field-by-field miscompare information and the total number of miscompares. If a compare policy is not provided, then the global <i>ovm_default_comparer</i> policy is used. See <a href="ovm_comparer-svh.html#ovm_comparer" class=LClass id=link94 onMouseOver="ShowTip(event, 'tt47', 'link94')" onMouseOut="HideTip('tt47')">ovm_comparer</a> for more information.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.do_compare" href="../../../../src/base/ovm_object.svh">do_compare</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function bit do_compare (</td><td class=PType nowrap>ovm_object </td><td class=PParameter nowrap>rhs,</td></tr><tr><td></td><td class=PType nowrap>ovm_comparer </td><td class=PParameter nowrap>comparer</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The do_compare method is the user-definable hook called by the <a href="#ovm_object.compare" class=LMethod id=link95 onMouseOver="ShowTip(event, 'tt23', 'link95')" onMouseOut="HideTip('tt23')">compare</a> method. A derived class should override this method to include its fields in a compare operation.</p><h4 class=CHeading>A typical implementation is as follows</h4><blockquote><pre>class mytype extends ovm_object; |
| ... |
| int f1; |
| virtual function bit do_compare (ovm_object rhs,ovm_comparer comparer); |
| mytype rhs_; |
| do_compare = super.do_compare(rhs,comparer); |
| $cast(rhs_,rhs); |
| do_compare &= comparer.compare_field_int("f1", f1, rhs_.f1); |
| endfunction</pre></blockquote><p>A derived class implementation must call super.do_compare to ensure its base class’ properties, if any, are included in the comparison. Also, the rhs argument is provided as a generic ovm_object. Thus, you must $cast it to the type of this object before comparing.</p><p>The actual comparison should be implemented using the ovm_comparer object rather than direct field-by-field comparison. This enables users of your class to customize how comparisons are performed and how much miscompare information is collected. See ovm_comparer for more details.</p></div></div></div> |
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| <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="ovm_object.Packing" href="../../../../src/base/ovm_object.svh">Packing</a></h3></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.pack" href="../../../../src/base/ovm_object.svh">pack</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function int pack (</td><td class=PTypePrefix nowrap>ref </td><td class=PType nowrap>bit </td><td class=PParameter nowrap>bitstream[],</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PTypePrefix nowrap>input </td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.pack_bytes" href="../../../../src/base/ovm_object.svh">pack_bytes</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function int pack_bytes (</td><td class=PTypePrefix nowrap>ref byte </td><td class=PType nowrap>unsigned </td><td class=PParameter nowrap>bytestream[],</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PTypePrefix nowrap>input </td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.pack_ints" href="../../../../src/base/ovm_object.svh">pack_ints</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function int pack_ints (</td><td class=PTypePrefix nowrap>ref int </td><td class=PType nowrap>unsigned </td><td class=PParameter nowrap>intstream[],</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PTypePrefix nowrap>input </td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The pack methods bitwise-concatenate this object’s properties into an array of bits, bytes, or ints. The methods are not virtual and must not be overloaded. To include additional fields in the pack operation, derived classes should override the <a href="#ovm_object.do_pack" class=LMethod id=link96 onMouseOver="ShowTip(event, 'tt28', 'link96')" onMouseOut="HideTip('tt28')">do_pack</a> method.</p><p>The optional <i>packer</i> argument specifies the packing policy, which governs the packing operation. If a packer policy is not provided, the global <a href="ovm_object_globals-svh.html#ovm_default_packer" class=LVariable id=link97 onMouseOver="ShowTip(event, 'tt48', 'link97')" onMouseOut="HideTip('tt48')">ovm_default_packer</a> policy is used. See <a href="ovm_packer-svh.html#ovm_packer" class=LClass id=link98 onMouseOver="ShowTip(event, 'tt49', 'link98')" onMouseOut="HideTip('tt49')">ovm_packer</a> for more information.</p><p>The return value is the total number of bits packed into the given array. Use the array’s built-in <i>size</i> method to get the number of bytes or ints consumed during the packing process.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.do_pack" href="../../../../src/base/ovm_object.svh">do_pack</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void do_pack (</td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The do_pack method is the user-definable hook called by the <a href="#ovm_object.pack" class=LMethod id=link99 onMouseOver="ShowTip(event, 'tt25', 'link99')" onMouseOut="HideTip('tt25')">pack</a> methods. A derived class should override this method to include its fields in a pack operation.</p><p>The <i>packer</i> argument is the policy object for packing. The policy object should be used to pack objects.</p><p>A typical example of an object packing itself is as follows</p><blockquote><pre>class mysubtype extends mysupertype; |
| ... |
| shortint myshort; |
| obj_type myobj; |
| byte myarray[]; |
| ... |
| function void do_pack (ovm_packer packer); |
| super.do_pack(packer); // pack mysupertype properties |
| packer.pack_field_int(myarray.size(), 32); |
| foreach (myarray) |
| packer.pack_field_int(myarray[index], 8); |
| packer.pack_field_int(myshort, $bits(myshort)); |
| packer.pack_object(myobj); |
| endfunction</pre></blockquote><p>The implementation must call <i>super.do_pack</i> so that base class properties are packed as well.</p><p>If your object contains dynamic data (object, string, queue, dynamic array, or associative array), and you intend to unpack into an equivalent data structure when unpacking, you must include meta-information about the dynamic data when packing as follows.</p><ul><li>For queues, dynamic arrays, or associative arrays, pack the number of elements in the array in the 32 bits immediately before packing individual elements, as shown above.</li><li>For string data types, append a zero byte after packing the string contents.</li><li>For objects, pack 4 bits immediately before packing the object. For null objects, pack 4’b0000. For non-null objects, pack 4’b0001.</li></ul><p>When the `ovm_*_field macros are used, the above meta information is included provided the <a href="ovm_packer-svh.html#ovm_packer" class=LClass id=link100 onMouseOver="ShowTip(event, 'tt49', 'link100')" onMouseOut="HideTip('tt49')">ovm_packer</a>’s <use_metadata> variable is set.</p><p>Packing order does not need to match declaration order. However, unpacking order must match packing order.</p></div></div></div> |
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| <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="ovm_object.Unpacking" href="../../../../src/base/ovm_object.svh">Unpacking</a></h3></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.unpack" href="../../../../src/base/ovm_object.svh">unpack</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function int unpack (</td><td class=PTypePrefix nowrap>ref </td><td class=PType nowrap>bit </td><td class=PParameter nowrap>bitstream[],</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PTypePrefix nowrap>input </td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.unpack_bytes" href="../../../../src/base/ovm_object.svh">unpack_bytes</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function int unpack_bytes (</td><td class=PTypePrefix nowrap>ref byte </td><td class=PType nowrap>unsigned </td><td class=PParameter nowrap>bytestream[],</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PTypePrefix nowrap>input </td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.unpack_ints" href="../../../../src/base/ovm_object.svh">unpack_ints</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function int unpack_ints (</td><td class=PTypePrefix nowrap>ref int </td><td class=PType nowrap>unsigned </td><td class=PParameter nowrap>intstream[],</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PTypePrefix nowrap>input </td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The unpack methods extract property values from an array of bits, bytes, or ints. The method of unpacking <u>must</u> exactly correspond to the method of packing. This is assured if (a) the same <i>packer</i> policy is used to pack and unpack, and (b) the order of unpacking is the same as the order of packing used to create the input array.</p><p>The unpack methods are fixed (non-virtual) entry points that are directly callable by the user. To include additional fields in the <a href="#ovm_object.unpack" class=LMethod id=link101 onMouseOver="ShowTip(event, 'tt29', 'link101')" onMouseOut="HideTip('tt29')">unpack</a> operation, derived classes should override the <a href="#ovm_object.do_unpack" class=LMethod id=link102 onMouseOver="ShowTip(event, 'tt32', 'link102')" onMouseOut="HideTip('tt32')">do_unpack</a> method.</p><p>The optional <i>packer</i> argument specifies the packing policy, which governs both the pack and unpack operation. If a packer policy is not provided, then the global <i>ovm_default_packer</i> policy is used. See ovm_packer for more information.</p><p>The return value is the actual number of bits unpacked from the given array.</p></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.do_unpack" href="../../../../src/base/ovm_object.svh">do_unpack</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void do_unpack (</td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>The do_unpack method is the user-definable hook called by the <a href="#ovm_object.unpack" class=LMethod id=link103 onMouseOver="ShowTip(event, 'tt29', 'link103')" onMouseOut="HideTip('tt29')">unpack</a> method. A derived class should override this method to include its fields in an unpack operation.</p><p>The <i>packer</i> argument is the policy object for both packing and unpacking. It must be the same packer used to pack the object into bits. Also, do_unpack must unpack fields in the same order in which they were packed. See <a href="ovm_packer-svh.html#ovm_packer" class=LClass id=link104 onMouseOver="ShowTip(event, 'tt49', 'link104')" onMouseOut="HideTip('tt49')">ovm_packer</a> for more information.</p><p>The following implementation corresponds to the example given in do_pack.</p><blockquote><pre>function void do_unpack (ovm_packer packer); |
| int sz; |
| super.do_unpack(packer); // unpack super's properties |
| sz = packer.unpack_field_int(myarray.size(), 32); |
| myarray.delete(); |
| for(int index=0; index<sz; index++) |
| myarray[index] = packer.unpack_field_int(8); |
| myshort = packer.unpack_field_int($bits(myshort)); |
| packer.unpack_object(myobj); |
| endfunction</pre></blockquote><p>If your object contains dynamic data (object, string, queue, dynamic array, or associative array), and you intend to <a href="#ovm_object.unpack" class=LMethod id=link105 onMouseOver="ShowTip(event, 'tt29', 'link105')" onMouseOut="HideTip('tt29')">unpack</a> into an equivalent data structure, you must have included meta-information about the dynamic data when it was packed.</p><ul><li>For queues, dynamic arrays, or associative arrays, unpack the number of elements in the array from the 32 bits immediately before unpacking individual elements, as shown above.</li><li>For string data types, unpack into the new string until a null byte is encountered.</li><li>For objects, unpack 4 bits into a byte or int variable. If the value is 0, the target object should be set to null and unpacking continues to the next property, if any. If the least significant bit is 1, then the target object should be allocated and its properties unpacked.</li></ul></div></div></div> |
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| <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="ovm_object.Configuration" href="../../../../src/base/ovm_object.svh">Configuration</a></h3></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.set_int_local" href="../../../../src/base/ovm_object.svh">set_int_local</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void set_int_local (</td><td class=PType nowrap>string </td><td class=PParameter nowrap>field_name,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>ovm_bitstream_t </td><td class=PParameter nowrap>value,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>bit </td><td class=PParameter nowrap>recurse</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>1</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.set_string_local" href="../../../../src/base/ovm_object.svh">set_string_local</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void set_string_local (</td><td class=PType nowrap>string </td><td class=PParameter nowrap>field_name,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>string </td><td class=PParameter nowrap>value,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>bit </td><td class=PParameter nowrap>recurse</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>1</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody></div></div></div> |
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| <div class="CMethod"><div class=CTopic><h3 class=CTitle><a name="ovm_object.set_object_local" href="../../../../src/base/ovm_object.svh">set_object_local</a></h3><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void set_object_local (</td><td class=PType nowrap>string </td><td class=PParameter nowrap>field_name,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>ovm_object </td><td class=PParameter nowrap>value,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>bit </td><td class=PParameter nowrap>clone</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>1,</td></tr><tr><td></td><td class=PType nowrap>bit </td><td class=PParameter nowrap>recurse</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>1</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>These methods provide write access to integral, string, and ovm_object-based properties indexed by a <i>field_name</i> string. The object designer choose which, if any, properties will be accessible, and overrides the appropriate methods depending on the properties’ types. For objects, the optional <i>clone</i> argument specifies whether to clone the <i>value</i> argument before assignment.</p><p>The global <a href="ovm_globals-svh.html#ovm_is_match" class=LMethod id=link106 onMouseOver="ShowTip(event, 'tt50', 'link106')" onMouseOut="HideTip('tt50')">ovm_is_match</a> function is used to match the field names, so <i>field_name</i> may contain wildcards.</p><p>An example implementation of all three methods is as follows.</p><blockquote><pre>class mytype extends ovm_object; |
| |
| local int myint; |
| local byte mybyte; |
| local shortint myshort; // no access |
| local string mystring; |
| local obj_type myobj; |
| |
| // provide access to integral properties |
| function void set_int_local(string field_name, ovm_bitstream_t value); |
| if (ovm_is_match (field_name, "myint")) |
| myint = value; |
| else if (ovm_is_match (field_name, "mybyte")) |
| mybyte = value; |
| endfunction |
| |
| // provide access to string properties |
| function void set_string_local(string field_name, string value); |
| if (ovm_is_match (field_name, "mystring")) |
| mystring = value; |
| endfunction |
| |
| // provide access to sub-objects |
| function void set_object_local(string field_name, ovm_object value, |
| bit clone=1); |
| if (ovm_is_match (field_name, "myobj")) begin |
| if (value != null) begin |
| obj_type tmp; |
| // if provided value is not correct type, produce error |
| if (!$cast(tmp, value) |
| /* error */ |
| else |
| myobj = clone ? tmp.clone() : tmp; |
| end |
| else |
| myobj = null; // value is null, so simply assign null to myobj |
| end |
| endfunction |
| ...</pre></blockquote><p>Although the object designer implements these methods to provide outside access to one or more properties, they are intended for internal use (e.g., for command-line debugging and auto-configuration) and should not be called directly by the user.</p></div></div></div> |
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| <div class=CToolTip id="tt1"><div class=CClass><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual class ovm_object extends ovm_void</td></tr></table></blockquote>The ovm_object class is the base class for all OVM data and hierarchical classes. </div></div><div class=CToolTip id="tt2"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function new (</td><td class=PType nowrap>string </td><td class=PParameter nowrap>name</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>""</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Creates a new ovm_object with the given instance <i>name</i>. </div></div><div class=CToolTip id="tt3"><div class=CVariable><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>static bit use_ovm_seeding = 1</td></tr></table></blockquote>This bit enables or disables the OVM seeding mechanism. </div></div><div class=CToolTip id="tt4"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>function void reseed ()</td></tr></table></blockquote>Calls <i>srandom</i> on the object to reseed the object using the OVM seeding mechanism, which sets the seed based on type name and instance name instead of based on instance position in a thread.</div></div><div class=CToolTip id="tt5"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void set_name (</td><td class=PType nowrap>string </td><td class=PParameter nowrap>name</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Sets the instance name of this object, overwriting any previously given name.</div></div><div class=CToolTip id="tt6"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual function string get_name ()</td></tr></table></blockquote>Returns the name of the object, as provided by the <i>name</i> argument in the new constructor or set_name method.</div></div><div class=CToolTip id="tt7"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual function string get_full_name ()</td></tr></table></blockquote>Returns the full hierarchical name of this object. </div></div><div class=CToolTip id="tt8"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual function int get_inst_id ()</td></tr></table></blockquote>Returns the object’s unique, numeric instance identifier.</div></div><div class=CToolTip id="tt9"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>static function int get_inst_count()</td></tr></table></blockquote>Returns the current value of the instance counter, which represents the total number of ovm_object-based objects that have been allocated in simulation. </div></div><div class=CToolTip id="tt10"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>static function ovm_object_wrapper get_type ()</td></tr></table></blockquote>Returns the type-proxy (wrapper) for this object. </div></div><div class=CToolTip id="tt11"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual function ovm_object_wrapper get_object_type ()</td></tr></table></blockquote>Returns the type-proxy (wrapper) for this object. </div></div><div class=CToolTip id="tt12"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual function string get_type_name ()</td></tr></table></blockquote>This function returns the type name of the object, which is typically the type identifier enclosed in quotes. </div></div><div class=CToolTip id="tt13"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function ovm_object create (</td><td class=PType nowrap>string </td><td class=PParameter nowrap>name</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>""</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The create method allocates a new object of the same type as this object and returns it via a base ovm_object handle. </div></div><div class=CToolTip id="tt14"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual function ovm_object clone ()</td></tr></table></blockquote>The clone method creates and returns an exact copy of this object.</div></div><div class=CToolTip id="tt15"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function void print (</td><td class=PType nowrap>ovm_printer </td><td class=PParameter nowrap>printer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The print method deep-prints this object’s properties in a format and manner governed by the given <i>printer</i> argument; if the <i>printer</i> argument is not provided, the global ovm_default_printer is used. </div></div><div class=CToolTip id="tt16"><div class=CVariable><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>ovm_printer ovm_default_printer = ovm_default_table_printer</td></tr></table></blockquote>The default printer is a global object that is used by ovm_object::print or ovm_object::sprint when no specific printer is set.</div></div><div class=CToolTip id="tt17"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function string sprint (</td><td class=PType nowrap>ovm_printer </td><td class=PParameter nowrap>printer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The <i>sprint</i> method works just like the print method, except the output is returned in a string rather than displayed.</div></div><div class=CToolTip id="tt18"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void do_print (</td><td class=PType nowrap>ovm_printer </td><td class=PParameter nowrap>printer</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The <i>do_print</i> method is the user-definable hook called by print and sprint that allows users to customize what gets printed or sprinted beyond the field information provided by the `ovm_field_* macros.</div></div><div class=CToolTip id="tt19"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function void record (</td><td class=PType nowrap>ovm_recorder </td><td class=PParameter nowrap>recorder</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The record method deep-records this object’s properties according to an optional <i>recorder</i> policy. </div></div><div class=CToolTip id="tt20"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void do_record (</td><td class=PType nowrap>ovm_recorder </td><td class=PParameter nowrap>recorder</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The do_record method is the user-definable hook called by the record method. </div></div><div class=CToolTip id="tt21"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function void copy (</td><td class=PType nowrap>ovm_object </td><td class=PParameter nowrap>rhs</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The copy method returns a deep copy of this object.</div></div><div class=CToolTip id="tt22"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void do_copy (</td><td class=PType nowrap>ovm_object </td><td class=PParameter nowrap>rhs</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The do_copy method is the user-definable hook called by the copy method. </div></div><div class=CToolTip id="tt23"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function bit compare (</td><td class=PType nowrap>ovm_object </td><td class=PParameter nowrap>rhs,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>ovm_comparer </td><td class=PParameter nowrap>comparer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The compare method deep compares this data object with the object provided in the <i>rhs</i> (right-hand side) argument.</div></div><div class=CToolTip id="tt24"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function bit do_compare (</td><td class=PType nowrap>ovm_object </td><td class=PParameter nowrap>rhs,</td></tr><tr><td></td><td class=PType nowrap>ovm_comparer </td><td class=PParameter nowrap>comparer</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The do_compare method is the user-definable hook called by the compare method. </div></div><div class=CToolTip id="tt25"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function int pack (</td><td class=PTypePrefix nowrap>ref </td><td class=PType nowrap>bit </td><td class=PParameter nowrap>bitstream[],</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PTypePrefix nowrap>input </td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt26"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function int pack_bytes (</td><td class=PTypePrefix nowrap>ref byte </td><td class=PType nowrap>unsigned </td><td class=PParameter nowrap>bytestream[],</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PTypePrefix nowrap>input </td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt27"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function int pack_ints (</td><td class=PTypePrefix nowrap>ref int </td><td class=PType nowrap>unsigned </td><td class=PParameter nowrap>intstream[],</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PTypePrefix nowrap>input </td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The pack methods bitwise-concatenate this object’s properties into an array of bits, bytes, or ints. </div></div><div class=CToolTip id="tt28"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void do_pack (</td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The do_pack method is the user-definable hook called by the pack methods. </div></div><div class=CToolTip id="tt29"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function int unpack (</td><td class=PTypePrefix nowrap>ref </td><td class=PType nowrap>bit </td><td class=PParameter nowrap>bitstream[],</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PTypePrefix nowrap>input </td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt30"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function int unpack_bytes (</td><td class=PTypePrefix nowrap>ref byte </td><td class=PType nowrap>unsigned </td><td class=PParameter nowrap>bytestream[],</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PTypePrefix nowrap>input </td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt31"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>function int unpack_ints (</td><td class=PTypePrefix nowrap>ref int </td><td class=PType nowrap>unsigned </td><td class=PParameter nowrap>intstream[],</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PTypePrefix nowrap>input </td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>null</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The unpack methods extract property values from an array of bits, bytes, or ints. </div></div><div class=CToolTip id="tt32"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void do_unpack (</td><td class=PType nowrap>ovm_packer </td><td class=PParameter nowrap>packer</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>The do_unpack method is the user-definable hook called by the unpack method. </div></div><div class=CToolTip id="tt33"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void set_int_local (</td><td class=PType nowrap>string </td><td class=PParameter nowrap>field_name,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>ovm_bitstream_t </td><td class=PParameter nowrap>value,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>bit </td><td class=PParameter nowrap>recurse</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>1</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt34"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void set_string_local (</td><td class=PType nowrap>string </td><td class=PParameter nowrap>field_name,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>string </td><td class=PParameter nowrap>value,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>bit </td><td class=PParameter nowrap>recurse</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>1</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt35"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>virtual function void set_object_local (</td><td class=PType nowrap>string </td><td class=PParameter nowrap>field_name,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>ovm_object </td><td class=PParameter nowrap>value,</td><td class=PDefaultValuePrefix> </td><td class=PDefaultValue width=100%></td></tr><tr><td></td><td class=PType nowrap>bit </td><td class=PParameter nowrap>clone</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>1,</td></tr><tr><td></td><td class=PType nowrap>bit </td><td class=PParameter nowrap>recurse</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%>1</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>These methods provide write access to integral, string, and ovm_object-based properties indexed by a <i>field_name</i> string. </div></div><div class=CToolTip id="tt36"><div class=CClass><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual class ovm_component extends ovm_report_object</td></tr></table></blockquote>The ovm_component class is the root base class for OVM components. </div></div><div class=CToolTip id="tt37"><div class=CClass><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters colspan=5>virtual class ovm_sequence #(</td></tr><tr><td> </td><td class=PType nowrap>type </td><td class=PParameter nowrap>REQ</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%> ovm_sequence_item,</td></tr><tr><td> </td><td class=PType nowrap>type </td><td class=PParameter nowrap>RSP</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%> REQ</td></tr><tr><td class=PAfterParameters colspan=5>) extends ovm_sequence_base</td></tr></table></td></tr></table></blockquote>The ovm_sequence class provides the interfaces necessary in order to create streams of sequence items and/or other sequences.</div></div><div class=CToolTip id="tt38"><div class=CClass><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters colspan=5>class ovm_sequencer #(</td></tr><tr><td> </td><td class=PType nowrap>type </td><td class=PParameter nowrap>REQ</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%> ovm_sequence_item,</td></tr><tr><td> </td><td class=PType nowrap>type </td><td class=PParameter nowrap>RSP</td><td class=PDefaultValuePrefix> = </td><td class=PDefaultValue width=100%> REQ</td></tr><tr><td class=PAfterParameters colspan=5>) extends ovm_sequencer_param_base #(REQ, RSP)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt39"><div class=CClass><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>class ovm_factory</td></tr></table></blockquote>As the name implies, ovm_factory is used to manufacture (create) OVM objects and components. </div></div><div class=CToolTip id="tt40"><div class=CClass><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>virtual class ovm_object_wrapper</td></tr></table></blockquote>The ovm_object_wrapper provides an abstract interface for creating object and component proxies. </div></div><div class=CToolTip id="tt41"><div class=CClass><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>class ovm_printer</td></tr></table></blockquote>The ovm_printer class provides an interface for printing ovm_objects in various formats. </div></div><div class=CToolTip id="tt42"><div class=CClass><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>class ovm_line_printer extends ovm_tree_printer</td></tr></table></blockquote>The line printer prints output in a line format.</div></div><div class=CToolTip id="tt43"><div class=CClass><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>class ovm_tree_printer extends ovm_printer</td></tr></table></blockquote>By overriding various methods of the ovm_printer super class, the tree printer prints output in a tree format.</div></div><div class=CToolTip id="tt44"><div class=CClass><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>class ovm_table_printer extends ovm_printer</td></tr></table></blockquote>The table printer prints output in a tabular format.</div></div><div class=CToolTip id="tt45"><div class=CVariable><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>ovm_recorder ovm_default_recorder = new()</td></tr></table></blockquote>The default recording policy. </div></div><div class=CToolTip id="tt46"><div class=CClass><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>class ovm_recorder</td></tr></table></blockquote>The ovm_recorder class provides a policy object for recording ovm_objects. </div></div><div class=CToolTip id="tt47"><div class=CClass><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>class ovm_comparer</td></tr></table></blockquote>The ovm_comparer class provides a policy object for doing comparisons. </div></div><div class=CToolTip id="tt48"><div class=CVariable><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>ovm_packer ovm_default_packer = new()</td></tr></table></blockquote>The default packer policy. </div></div><div class=CToolTip id="tt49"><div class=CClass>The ovm_packer class provides a policy object for packing and unpacking ovm_objects. </div></div><div class=CToolTip id="tt50"><div class=CMethod><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>`ifdef OVM_DPI import "DPI" function bit ovm_is_match (</td><td class=PType nowrap>string </td><td class=PParameter nowrap>expr,</td></tr><tr><td></td><td class=PType nowrap>string </td><td class=PParameter nowrap>str</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Returns 1 if the two strings match, 0 otherwise.</div></div><!--END_ND_TOOLTIPS--> |
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