54 lines
4.0 KiB
HTML
Executable File
54 lines
4.0 KiB
HTML
Executable File
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<meta name="generator" content="TempleOS V5.03">
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<pre id="content">
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<a name="l1"></a><span class=cF0>TempleOS does master-slave multicore instead of SMP. </span><span class=cF2>Core0</span><span class=cF0> is the master. The
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<a name="l2"></a>master core's applications explicitly assign computational jobs to other cores
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<a name="l3"></a>and the TempleOS scheduler does not move tasks between cores.
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<a name="l4"></a>
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<a name="l5"></a>There are multicore safe locks for file access and heap allocations, however, so
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<a name="l6"></a>TempleOS is symmetrical in some sense. See </span><a href="/Wb/Demo/MultiCore/LoadTest.HC.HTML#l1"><span class=cF4>::/Demo/MultiCore/LoadTest.HC</span></a><span class=cF0>.
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<a name="l7"></a>
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<a name="l8"></a>Only tasks on </span><span class=cF2>Core0</span><span class=cF0> can have windows, but other cores can help render them.
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<a name="l9"></a>
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<a name="l10"></a>Each core has an executive </span><a href="/Wb/Doc/Glossary.DD.HTML#l181"><span class=cF4>Seth Task</span></a><span class=cF0> which is the father of all tasks on that
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<a name="l11"></a>core. </span><a href="/Wb/Doc/Glossary.DD.HTML#l171"><span class=cF4>Adam</span></a><span class=cF0> is the </span><a href="/Wb/Doc/Glossary.DD.HTML#l181"><span class=cF4>Seth Task</span></a><span class=cF0> on </span><span class=cF2>Core0</span><span class=cF0>.
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<a name="l12"></a>
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<a name="l13"></a>You give a job to a </span><a href="/Wb/Doc/Glossary.DD.HTML#l181"><span class=cF4>Seth Task</span></a><span class=cF0> with </span><a href="/Wb/Kernel/MultiProc.HC.HTML#l213"><span class=cF4>JobQue</span></a><span class=cF0>() and get the result with </span><a href="/Wb/Kernel/Job.HC.HTML#l199"><span class=cF4>JobResGet</span></a><span class=cF0>().
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<a name="l14"></a> You spawn a task on any core with </span><a href="/Wb/Kernel/KTask.HC.HTML#l242"><span class=cF4>Spawn</span></a><span class=cF0>().
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<a name="l15"></a>
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<a name="l16"></a>Note: You must use the </span><span class=cF2>LOCK</span><span class=cF0> asm prefix when changing shared structures in a
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<a name="l17"></a>multicore environment. The </span><a href="/Wb/Kernel/KernelB.HH.HTML#l26"><span class=cF4>LBts</span></a><span class=cF0>(), </span><a href="/Wb/Kernel/KernelB.HH.HTML#l24"><span class=cF4>LBtr</span></a><span class=cF0>() and </span><a href="/Wb/Kernel/KernelB.HH.HTML#l22"><span class=cF4>LBtc</span></a><span class=cF0>() insts have </span><span class=cF2>LOCK</span><span class=cF0> prefixes.
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<a name="l18"></a>The compiler has a </span><span class=cF2>lock{}</span><span class=cF0> feature but it doesn't work well. See </span><span class=cF4>
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<a name="l19"></a></span><a href="/Wb/Demo/MultiCore/Lock.HC.HTML#l1"><span class=cF4>::/Demo/MultiCore/Lock.HC</span></a><span class=cF0>.
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<a name="l20"></a>
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<a name="l21"></a>See </span><a href="/Wb/Demo/Graphics/Transform.HC.HTML#l1"><span class=cF4>::/Demo/Graphics/Transform.HC</span></a><span class=cF0>.
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<a name="l22"></a>See </span><a href="/Wb/Kernel/MultiProc.HC.HTML#l1"><span class=cF4>::/Kernel/MultiProc.HC</span></a><span class=cF0>.
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</span></pre></body>
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</html>
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