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1b75d91002
Add arg to SATARep to specify drive types to show. Add checks in AHCIPortInit to verify port signatures, add helper method to get signatures from port.
48 lines
4.6 KiB
HTML
Executable file
48 lines
4.6 KiB
HTML
Executable file
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<pre style="font-family:monospace;font-size:12pt">
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<a name="l1"></a><span class=cF0>ZealOS does master-slave multicore instead of SMP. </span><span class=cF2>Core0</span><span class=cF0> is the master. The master core's applications explicitly assign
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<a name="l2"></a>computational jobs to other cores and the ZealOS scheduler does not move tasks between cores.
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<a name="l3"></a>
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<a name="l4"></a>There are multicore safe locks for file access and heap allocations, however, so ZealOS is symmetrical in some sense. See </span><span class=cF4>
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<a name="l5"></a></span><a href="https://zeal-operating-system.github.io/ZealOS/Demo/MultiCore/LoadTest.CC.html#l1"><span class=cF4>::/Demo/MultiCore/LoadTest.CC</span></a><span class=cF0>.
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<a name="l6"></a>
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<a name="l7"></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="l8"></a>
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<a name="l9"></a>Each core has an </span><a href="https://zeal-operating-system.github.io/ZealOS/Doc/Glossary.DD.html#l161"><span class=cF4>Executive Task</span></a><span class=cF0> which is the father of all tasks on that core. </span><a href="https://zeal-operating-system.github.io/ZealOS/Doc/Glossary.DD.html#l154"><span class=cF4>System</span></a><span class=cF0> is the </span><a href="https://zeal-operating-system.github.io/ZealOS/Doc/Glossary.DD.html#l161"><span class=cF4>Executive Task</span></a><span class=cF0> on </span><span class=cF2>Core0</span><span class=cF0>.
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<a name="l10"></a>
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<a name="l11"></a>You give a job to an </span><a href="https://zeal-operating-system.github.io/ZealOS/Doc/Glossary.DD.html#l161"><span class=cF4>Executive Task</span></a><span class=cF0> with </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/MultiProc.CC.html#l224"><span class=cF4>JobQueue</span></a><span class=cF0>() and get the result with </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/Job.CC.html#l242"><span class=cF4>JobResGet</span></a><span class=cF0>(). You spawn a task on any core with </span><span class=cF4>
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<a name="l12"></a></span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KTask.CC.html#l264"><span class=cF4>Spawn</span></a><span class=cF0>().
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<a name="l13"></a>
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<a name="l14"></a>Note: You must use the </span><span class=cF2>LOCK</span><span class=cF0> asm prefix when changing shared structures in a multicore environment. The </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KernelB.HH.html#l17"><span class=cF4>LBts</span></a><span class=cF0>(), </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KernelB.HH.html#l16"><span class=cF4>LBtr</span></a><span class=cF0>() and </span><span class=cF4>
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<a name="l15"></a></span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KernelB.HH.html#l15"><span class=cF4>LBtc</span></a><span class=cF0>() insts have </span><span class=cF2>LOCK</span><span class=cF0> prefixes. 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="l16"></a></span><a href="https://zeal-operating-system.github.io/ZealOS/Demo/MultiCore/Lock.CC.html#l1"><span class=cF4>::/Demo/MultiCore/Lock.CC</span></a><span class=cF0>.
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<a name="l17"></a>
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<a name="l18"></a>See </span><a href="https://zeal-operating-system.github.io/ZealOS/Demo/Graphics/Transform.CC.html#l1"><span class=cF4>::/Demo/Graphics/Transform.CC</span></a><span class=cF0>.
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<a name="l19"></a>See </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/MultiProc.CC.html#l1"><span class=cF4>::/Kernel/MultiProc.CC</span></a><span class=cF0>.
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</span></pre></body>
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