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vtune: count the number of ERET to trigger a quick exit

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The purpose is to stop vtune profiling in a predictable way. It allows
to compare multiple runs.

ERET is called every syscall/interrupt return so it is proportional to
the EE program execution.
This commit is contained in:
Gregory Hainaut 2016-12-08 09:53:00 +01:00
parent 031b6e6372
commit 7f64f39c05
1 changed files with 18 additions and 0 deletions
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18
pcsx2/COP0.cpp
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@ -536,6 +536,24 @@ void BC0TL() {
}
void ERET() {
#ifdef ENABLE_VTUNE
// Allow to stop vtune in a predictable way to compare runs
// Of course, the limit will depend on the game.
const u32 million = 1000 * 1000;
static u32 vtune = 0;
vtune++;
// quick_exit vs exit: quick_exit won't call static storage destructor (OS will manage). It helps
// avoiding the race condition between threads destruction.
if (vtune > 30 * million) {
Console.WriteLn("VTUNE: quick_exit");
std::quick_exit(EXIT_SUCCESS);
} else if (!(vtune % million)) {
Console.WriteLn("VTUNE: ERET was called %uM times", vtune/million);
}
#endif
if (cpuRegs.CP0.n.Status.b.ERL) {
cpuRegs.pc = cpuRegs.CP0.n.ErrorEPC;
cpuRegs.CP0.n.Status.b.ERL = 0;