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<h1>cl_syoscb_queue_std.svh</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/// Standard implementation of a queue. Uses a normal SystemVerilog queue as</span>
<a name="l00002"></a>00002 <span class="comment"></span><span class="comment">/// implementation. The class implements the queue API as defined by the queue</span>
<a name="l00003"></a>00003 <span class="comment"></span><span class="comment">/// base class.</span>
<a name="l00004"></a><a class="code" href="classcl__syoscb__queue__std.html">00004</a> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classcl__syoscb__queue__std.html" title="Standard implementation of a queue.">cl_syoscb_queue_std</a> <span class="keyword">extends</span> <a class="code" href="classcl__syoscb__queue.html" title="Class which base concet of a queue.">cl_syoscb_queue</a>;
<a name="l00005"></a>00005 <span class="comment">//-------------------------------------</span>
<a name="l00006"></a>00006 <span class="comment">// Non randomizable variables</span>
<a name="l00007"></a>00007 <span class="comment">//-------------------------------------</span><span class="comment"></span>
<a name="l00008"></a>00008 <span class="comment"> /// Poor mans queue implementation as a SV queue</span>
<a name="l00009"></a>00009 <span class="comment"></span> local <a class="code" href="classcl__syoscb__item.html" title="The UVM scoreboard item.">cl_syoscb_item</a> items[$];
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="comment">//-------------------------------------</span>
<a name="l00012"></a>00012 <span class="comment">// UVM Macros</span>
<a name="l00013"></a>00013 <span class="comment">//-------------------------------------</span>
<a name="l00014"></a>00014 `uvm_component_utils_begin(cl_syoscb_queue_std)
<a name="l00015"></a>00015 `uvm_field_queue_object(items, UVM_DEFAULT)
<a name="l00016"></a>00016 `uvm_component_utils_end
<a name="l00017"></a>00017
<a name="l00018"></a>00018 <span class="comment">//-------------------------------------</span>
<a name="l00019"></a>00019 <span class="comment">// Constructor</span>
<a name="l00020"></a>00020 <span class="comment">//-------------------------------------</span>
<a name="l00021"></a>00021 extern function new(string name, uvm_component parent);
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="comment">//-------------------------------------</span>
<a name="l00024"></a>00024 <span class="comment">// Queue API</span>
<a name="l00025"></a>00025 <span class="comment">//-------------------------------------</span>
<a name="l00026"></a>00026 <span class="comment">// Basic queue functions</span>
<a name="l00027"></a>00027 extern <span class="keyword">virtual</span> function bit <a class="code" href="classcl__syoscb__queue__std.html#a68f61e7f53901acb3cc50a9001193c0f" title="Queue API: See cl_syoscb_queue for more details">add_item</a>(string producer, uvm_sequence_item item);
<a name="l00028"></a>00028 extern <span class="keyword">virtual</span> function bit <a class="code" href="classcl__syoscb__queue__std.html#a9cae04fa7b9a40a5554ef24bfaac851b" title="Queue API: See cl_syoscb_queue for more details">delete_item</a>(int unsigned idx);
<a name="l00029"></a>00029 extern <span class="keyword">virtual</span> function <a class="code" href="classcl__syoscb__item.html" title="The UVM scoreboard item.">cl_syoscb_item</a> <a class="code" href="classcl__syoscb__queue__std.html#a42efb916d933e56e9865919504054499" title="Queue API: See cl_syoscb_queue for more details">get_item</a>(int unsigned idx);
<a name="l00030"></a>00030 extern <span class="keyword">virtual</span> function int unsigned <a class="code" href="classcl__syoscb__queue__std.html#ac91a26574353c8c24789a993d3ffc12d" title="Queue API: See cl_syoscb_queue for more details">get_size</a>();
<a name="l00031"></a>00031 extern <span class="keyword">virtual</span> function bit <a class="code" href="classcl__syoscb__queue__std.html#a812d7f4d7143c9bef1f3181e24347d5c" title="Queue API: See cl_syoscb_queue for more details">empty</a>();
<a name="l00032"></a>00032 extern <span class="keyword">virtual</span> function bit <a class="code" href="classcl__syoscb__queue__std.html#ad293b78071120f596e3884980e36a9fa" title="Queue API: See cl_syoscb_queue for more details">insert_item</a>(string producer, uvm_sequence_item item, int unsigned idx);
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="comment">// Iterator support functions</span>
<a name="l00035"></a>00035 extern <span class="keyword">virtual</span> function <a class="code" href="classcl__syoscb__queue__iterator__base.html" title="Queue iterator base class defining the iterator API used for iterating queues.">cl_syoscb_queue_iterator_base</a> <a class="code" href="classcl__syoscb__queue__std.html#a84149180e88153757ac3df08fe6dd3ce" title="Queue API: See cl_syoscb_queue for more details">create_iterator</a>();
<a name="l00036"></a>00036 extern <span class="keyword">virtual</span> function bit <a class="code" href="classcl__syoscb__queue__std.html#ada80798fcd391e309e0e85f68cda98e1" title="Queue API: See cl_syoscb_queue for more details">delete_iterator</a>(cl_syoscb_queue_iterator_base iterator);
<a name="l00037"></a>00037 endclass: <a class="code" href="classcl__syoscb__queue__std.html" title="Standard implementation of a queue.">cl_syoscb_queue_std</a>
<a name="l00038"></a>00038
<a name="l00039"></a>00039 function <a class="code" href="classcl__syoscb__queue__std.html" title="Standard implementation of a queue.">cl_syoscb_queue_std</a>::new(string name, uvm_component parent);
<a name="l00040"></a>00040 super.new(name, parent);
<a name="l00041"></a>00041 endfunction: new
<a name="l00042"></a>00042 <span class="comment"></span>
<a name="l00043"></a>00043 <span class="comment">/// <b>Queue API:</b> See cl_syoscb_queue for more details</span>
<a name="l00044"></a><a class="code" href="classcl__syoscb__queue__std.html#a68f61e7f53901acb3cc50a9001193c0f">00044</a> <span class="comment"></span>function bit <a class="code" href="classcl__syoscb__queue__std.html" title="Standard implementation of a queue.">cl_syoscb_queue_std</a>::<a class="code" href="classcl__syoscb__queue__std.html#a68f61e7f53901acb3cc50a9001193c0f" title="Queue API: See cl_syoscb_queue for more details">add_item</a>(string producer, uvm_sequence_item item);
<a name="l00045"></a>00045 <a class="code" href="classcl__syoscb__item.html" title="The UVM scoreboard item.">cl_syoscb_item</a> new_item;
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="comment">// Check that the max_queue_size for this queue is not reached</span>
<a name="l00048"></a>00048 if(this.cfg.get_max_queue_size(this.get_name())>0 &&
<a name="l00049"></a>00049 this.<a class="code" href="classcl__syoscb__queue__std.html#ac91a26574353c8c24789a993d3ffc12d" title="Queue API: See cl_syoscb_queue for more details">get_size</a>()==this.<a class="code" href="classcl__syoscb__queue.html#ab92efb1fb67ec7cc8dfe928a474a3e2b" title="Handle to the configuration.">cfg</a>.get_max_queue_size(this.get_name())) begin
<a name="l00050"></a>00050 `uvm_error("QUEUE_ERROR", $sformatf("[%s]: Maximum number of items (%0d) for queue: %s reached",
<a name="l00051"></a>00051 this.cfg.get_scb_name(),
<a name="l00052"></a>00052 this.cfg.get_max_queue_size(this.get_name()),
<a name="l00053"></a>00053 this.get_name()))
<a name="l00054"></a>00054 return(1'b0);
<a name="l00055"></a>00055 end
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="comment">// Create the new scoreboard item with META data which wraps the</span>
<a name="l00058"></a>00058 <span class="comment">// uvm_sequence_item</span>
<a name="l00059"></a>00059 <span class="comment">//</span>
<a name="l00060"></a>00060 <span class="comment">// *NOTE*: No need for using create.</span>
<a name="l00061"></a>00061 <span class="comment">// New is okay since no customization is needed here</span>
<a name="l00062"></a>00062 <span class="comment">//</span>
<a name="l00063"></a>00063 <span class="comment">// *NOTE*: Create it once with a default name to be able to retrieve the unique</span>
<a name="l00064"></a>00064 <span class="comment">// instance id and then rename the object with a uniqueue name</span>
<a name="l00065"></a>00065 new_item = new(.name("default-item"));
<a name="l00066"></a>00066 new_item.set_name({producer,"-item-", $psprintf("%0d", new_item.get_inst_id())});
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="comment">// Transfer the producer to the item</span>
<a name="l00069"></a>00069 <span class="comment">// *NOTE*: No need to check the producer since this is checked by the parent component</span>
<a name="l00070"></a>00070 new_item.set_producer(.producer(producer));
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="comment">// Transfer the UVM sequence item to the item</span>
<a name="l00073"></a>00073 <span class="comment">// *NOTE*: No need to copy it since it has been copied by the parent</span>
<a name="l00074"></a>00074 new_item.set_item(.item(item));
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="comment">// Insert the item in the queue</span>
<a name="l00077"></a>00077 this.items.push_back(new_item);
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="comment">// Count the number of inserts</span>
<a name="l00080"></a>00080 this.cnt_add_item++;
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="comment">// Signal that it worked</span>
<a name="l00083"></a>00083 return 1;
<a name="l00084"></a>00084 endfunction: <a class="code" href="classcl__syoscb__queue__std.html#a68f61e7f53901acb3cc50a9001193c0f" title="Queue API: See cl_syoscb_queue for more details">add_item</a>
<a name="l00085"></a>00085 <span class="comment"></span>
<a name="l00086"></a>00086 <span class="comment">/// <b>Queue API:</b> See cl_syoscb_queue for more details</span>
<a name="l00087"></a><a class="code" href="classcl__syoscb__queue__std.html#a9cae04fa7b9a40a5554ef24bfaac851b">00087</a> <span class="comment"></span>function bit <a class="code" href="classcl__syoscb__queue__std.html" title="Standard implementation of a queue.">cl_syoscb_queue_std</a>::<a class="code" href="classcl__syoscb__queue__std.html#a9cae04fa7b9a40a5554ef24bfaac851b" title="Queue API: See cl_syoscb_queue for more details">delete_item</a>(int unsigned idx);
<a name="l00088"></a>00088 if(idx < this.items.size()) begin
<a name="l00089"></a>00089 cl_syoscb_queue_iterator_base iter[$];
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="comment">// Wait to get exclusive access to the queue</span>
<a name="l00092"></a>00092 <span class="comment">// if there are multiple iterators</span>
<a name="l00093"></a>00093 while(!this.iter_sem.try_get());
<a name="l00094"></a>00094 items.delete(idx);
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="comment">// Update iterators</span>
<a name="l00097"></a>00097 iter = this.iterators.find(x) with (x.get_idx() < idx);
<a name="l00098"></a>00098 for(int i = 0; i < iter.size(); i++) begin
<a name="l00099"></a>00099 void'(iter[i].previous());
<a name="l00100"></a>00100 end
<a name="l00101"></a>00101
<a name="l00102"></a>00102 this.iter_sem.put();
<a name="l00103"></a>00103 return 1;
<a name="l00104"></a>00104 end else begin
<a name="l00105"></a>00105 `uvm_info("OUT_OF_BOUNDS", $sformatf("[%s]: Idx: %0d is not present in queue: %0s", this.cfg.get_scb_name(), idx, this.get_name()), UVM_DEBUG);
<a name="l00106"></a>00106 return 0;
<a name="l00107"></a>00107 end
<a name="l00108"></a>00108 endfunction: delete_item
<a name="l00109"></a>00109 <span class="comment"></span>
<a name="l00110"></a>00110 <span class="comment">/// <b>Queue API:</b> See cl_syoscb_queue for more details</span>
<a name="l00111"></a><a class="code" href="classcl__syoscb__queue__std.html#a42efb916d933e56e9865919504054499">00111</a> <span class="comment"></span>function cl_syoscb_item cl_syoscb_queue_std::get_item(int unsigned idx);
<a name="l00112"></a>00112 if(idx < this.items.size()) begin
<a name="l00113"></a>00113 return items[idx];
<a name="l00114"></a>00114 end else begin
<a name="l00115"></a>00115 `uvm_info("OUT_OF_BOUNDS", $sformatf("[%s]: Idx: %0d is not present in queue: %0s", this.cfg.get_scb_name(), idx, this.get_name()), UVM_DEBUG);
<a name="l00116"></a>00116 return null;
<a name="l00117"></a>00117 end
<a name="l00118"></a>00118 endfunction: get_item
<a name="l00119"></a>00119 <span class="comment"></span>
<a name="l00120"></a>00120 <span class="comment">/// <b>Queue API:</b> See cl_syoscb_queue for more details</span>
<a name="l00121"></a><a class="code" href="classcl__syoscb__queue__std.html#ac91a26574353c8c24789a993d3ffc12d">00121</a> <span class="comment"></span>function int unsigned cl_syoscb_queue_std::get_size();
<a name="l00122"></a>00122 return this.items.size();
<a name="l00123"></a>00123 endfunction: get_size
<a name="l00124"></a>00124 <span class="comment"></span>
<a name="l00125"></a>00125 <span class="comment">/// <b>Queue API:</b> See cl_syoscb_queue for more details</span>
<a name="l00126"></a><a class="code" href="classcl__syoscb__queue__std.html#a812d7f4d7143c9bef1f3181e24347d5c">00126</a> <span class="comment"></span>function bit cl_syoscb_queue_std::empty();
<a name="l00127"></a>00127 return(this.get_size()!=0 ? 0 : 1);
<a name="l00128"></a>00128 endfunction
<a name="l00129"></a>00129 <span class="comment"></span>
<a name="l00130"></a>00130 <span class="comment">/// <b>Queue API:</b> See cl_syoscb_queue for more details</span>
<a name="l00131"></a><a class="code" href="classcl__syoscb__queue__std.html#ad293b78071120f596e3884980e36a9fa">00131</a> <span class="comment"></span>function bit cl_syoscb_queue_std::insert_item(string producer, uvm_sequence_item item, int unsigned idx);
<a name="l00132"></a>00132 cl_syoscb_item new_item;
<a name="l00133"></a>00133
<a name="l00134"></a>00134 <span class="comment">// Create the new scoreboard item with META data which wraps the</span>
<a name="l00135"></a>00135 <span class="comment">// uvm_sequence_item</span>
<a name="l00136"></a>00136 <span class="comment">//</span>
<a name="l00137"></a>00137 <span class="comment">// *NOTE*: No need for using create.</span>
<a name="l00138"></a>00138 <span class="comment">// New is okay since no customization is needed here</span>
<a name="l00139"></a>00139 <span class="comment">//</span>
<a name="l00140"></a>00140 <span class="comment">// *NOTE*: Create it once with a default name to be able to retrieve the unique</span>
<a name="l00141"></a>00141 <span class="comment">// instance id and then rename the object with a uniqueue name</span>
<a name="l00142"></a>00142 new_item = new(.name("default-item"));
<a name="l00143"></a>00143 new_item.set_name({producer,"-item-", $psprintf("%0d", new_item.get_inst_id())});
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="comment">// Transfer the producer to the item</span>
<a name="l00146"></a>00146 <span class="comment">// *NOTE*: No need to check the producer since this is checked by the parent component</span>
<a name="l00147"></a>00147 new_item.set_producer(.producer(producer));
<a name="l00148"></a>00148
<a name="l00149"></a>00149 <span class="comment">// Transfer the UVM sequence item to the item</span>
<a name="l00150"></a>00150 <span class="comment">// *NOTE*: No need to copy it since it has been copied by the parent</span>
<a name="l00151"></a>00151 new_item.set_item(.item(item));
<a name="l00152"></a>00152
<a name="l00153"></a>00153 if(idx < this.items.size()) begin
<a name="l00154"></a>00154 cl_syoscb_queue_iterator_base iter[$];
<a name="l00155"></a>00155
<a name="l00156"></a>00156 <span class="comment">// Wait to get exclusive access to the queue</span>
<a name="l00157"></a>00157 <span class="comment">// if there are multiple iterators</span>
<a name="l00158"></a>00158 while(!this.iter_sem.try_get());
<a name="l00159"></a>00159 this.items.insert(idx, new_item);
<a name="l00160"></a>00160
<a name="l00161"></a>00161 <span class="comment">// Update iterators</span>
<a name="l00162"></a>00162 iter = this.iterators.find(x) with (x.get_idx() >= idx);
<a name="l00163"></a>00163 for(int i = 0; i < iter.size(); i++) begin
<a name="l00164"></a>00164 <span class="comment">// Call .next() blindly. This can never fail by design, since</span>
<a name="l00165"></a>00165 <span class="comment">// if it was point at the last element then it points to the second last</span>
<a name="l00166"></a>00166 <span class="comment">// element prior to the .next(). The .next() call will then just</span>
<a name="l00167"></a>00167 <span class="comment">// set the iterator to the correct index again after the insertion</span>
<a name="l00168"></a>00168 void'(iter[i].next());
<a name="l00169"></a>00169 end
<a name="l00170"></a>00170
<a name="l00171"></a>00171 this.iter_sem.put();
<a name="l00172"></a>00172 return 1;
<a name="l00173"></a>00173 end else if(idx == this.items.size()) begin
<a name="l00174"></a>00174 this.items.push_back(new_item);
<a name="l00175"></a>00175 return 1;
<a name="l00176"></a>00176 end else begin
<a name="l00177"></a>00177 `uvm_info("OUT_OF_BOUNDS", $sformatf("[%s]: Idx: %0d too large for queue %0s", this.cfg.get_scb_name(), idx, this.get_name()), UVM_DEBUG);
<a name="l00178"></a>00178 return 0;
<a name="l00179"></a>00179 end
<a name="l00180"></a>00180 endfunction: insert_item
<a name="l00181"></a>00181
<a name="l00182"></a>00182 <span class="comment"></span>
<a name="l00183"></a>00183 <span class="comment">/// <b>Queue API:</b> See cl_syoscb_queue for more details</span>
<a name="l00184"></a><a class="code" href="classcl__syoscb__queue__std.html#a84149180e88153757ac3df08fe6dd3ce">00184</a> <span class="comment"></span>function cl_syoscb_queue_iterator_base cl_syoscb_queue_std::create_iterator();
<a name="l00185"></a>00185 cl_syoscb_queue_iterator_std result;
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <span class="comment">// Wait to get exclusive access to the queue</span>
<a name="l00188"></a>00188 <span class="comment">// if there are multiple iterators</span>
<a name="l00189"></a>00189 while(this.iter_sem.try_get() == 0);
<a name="l00190"></a>00190
<a name="l00191"></a>00191 result = cl_syoscb_queue_iterator_std::type_id::create(
<a name="l00192"></a>00192 $sformatf("%s_iter%0d", this.get_name(), this.iter_idx));
<a name="l00193"></a>00193
<a name="l00194"></a>00194 <span class="comment">// No need to check return value since set_queue will issue</span>
<a name="l00195"></a>00195 <span class="comment">// and `uvm_error of something goes wrong</span>
<a name="l00196"></a>00196 void'(result.set_queue(this));
<a name="l00197"></a>00197
<a name="l00198"></a>00198 this.iterators[result] = result;
<a name="l00199"></a>00199 this.iter_idx++;
<a name="l00200"></a>00200 this.iter_sem.put();
<a name="l00201"></a>00201
<a name="l00202"></a>00202 return result;
<a name="l00203"></a>00203 endfunction: create_iterator
<a name="l00204"></a>00204 <span class="comment"></span>
<a name="l00205"></a>00205 <span class="comment">/// <b>Queue API:</b> See cl_syoscb_queue for more details</span>
<a name="l00206"></a><a class="code" href="classcl__syoscb__queue__std.html#ada80798fcd391e309e0e85f68cda98e1">00206</a> <span class="comment"></span>function bit cl_syoscb_queue_std::delete_iterator(cl_syoscb_queue_iterator_base iterator);
<a name="l00207"></a>00207 if(iterator == null) begin
<a name="l00208"></a>00208 `uvm_info("NULL", $sformatf("[%s]: Asked to delete null iterator from list of iterators in %s",
<a name="l00209"></a>00209 this.cfg.get_scb_name(), this.get_name()), UVM_DEBUG);
<a name="l00210"></a>00210 return 0;
<a name="l00211"></a>00211 end else begin
<a name="l00212"></a>00212 <span class="comment">// Wait to get exclusive access to the queue</span>
<a name="l00213"></a>00213 <span class="comment">// if there are multiple iterators</span>
<a name="l00214"></a>00214 while(!this.iter_sem.try_get());
<a name="l00215"></a>00215
<a name="l00216"></a>00216 this.iterators.delete(iterator);
<a name="l00217"></a>00217 this.iter_idx--;
<a name="l00218"></a>00218 this.iter_sem.put();
<a name="l00219"></a>00219 return 1;
<a name="l00220"></a>00220 end
<a name="l00221"></a>00221 endfunction: delete_iterator
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