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Reduce delays in sceKernelReferThreadProfiler/ReferGlobalProfiler. #17676

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merged 3 commits into from
Jul 8, 2023
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Reduce delays in sceKernelReferThreadProfiler/ReferGlobalProfiler. #17676

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270382b
Remove delays in sceKernelReferThreadProfiler/ReferGlobalProfiler.
hrydgard Jul 8, 2023
725f105
Kernel: Use lower profiler func timing.
unknownbrackets Jul 8, 2023
ff8d712
Merge pull request #17677 from hrydgard/unknownbrackets-profiler-timing
hrydgard Jul 8, 2023
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14 changes: 5 additions & 9 deletions Core/HLE/sceKernel.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -681,21 +681,17 @@ struct DebugProfilerRegs {

static u32 sceKernelReferThreadProfiler() {
// This seems to simply has no parameter:
// https://pspdev.github.io/pspsdk/group__ThreadMan.html#ga8fd30da51b9dc0507ac4dae04a7e4a17 ,
// And in testing it just returns null in 55 usec (which is surprisingly long).

// So, we log only if debug logging is enabled, and sleep for a bit.
// https://pspdev.github.io/pspsdk/group__ThreadMan.html#ga8fd30da51b9dc0507ac4dae04a7e4a17
// In testing it just returns null in around 140-150 cycles. See issue #17623.
DEBUG_LOG(SCEKERNEL, "0=sceKernelReferThreadProfiler()");

// The delay has been measured, 53-56 us.
hleEatMicro(55);
hleEatCycles(140);
return 0;
}

static int sceKernelReferGlobalProfiler() {
DEBUG_LOG(SCEKERNEL, "0=sceKernelReferGlobalProfiler()");
// The delay has been measured, 53-56 us.
hleEatMicro(55);
// See sceKernelReferThreadProfiler(), similar.
hleEatCycles(140);
return 0;
}

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