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libraries: kernel: fix for inaccurate `sceKernelGetProcessTime`

This commit is contained in:
psucien 2024-08-25 23:29:22 +02:00
parent 6fd4264b5d
commit 78e24852f8
3 changed files with 12 additions and 10 deletions
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12
src/common/native_clock.cpp
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@ -18,16 +18,16 @@ NativeClock::NativeClock()
us_rdtsc_factor{GetFixedPoint64Factor(std::micro::den, rdtsc_frequency)}, us_rdtsc_factor{GetFixedPoint64Factor(std::micro::den, rdtsc_frequency)},
ms_rdtsc_factor{GetFixedPoint64Factor(std::milli::den, rdtsc_frequency)} {} ms_rdtsc_factor{GetFixedPoint64Factor(std::milli::den, rdtsc_frequency)} {}
u64 NativeClock::GetTimeNS() const { u64 NativeClock::GetTimeNS(u64 base_ptc /*= 0*/) const {
return MultiplyHigh(GetUptime(), ns_rdtsc_factor); return MultiplyHigh(GetUptime() - base_ptc, ns_rdtsc_factor);
} }
u64 NativeClock::GetTimeUS() const { u64 NativeClock::GetTimeUS(u64 base_ptc /*= 0*/) const {
return MultiplyHigh(GetUptime(), us_rdtsc_factor); return MultiplyHigh(GetUptime() - base_ptc, us_rdtsc_factor);
} }
u64 NativeClock::GetTimeMS() const { u64 NativeClock::GetTimeMS(u64 base_ptc /*= 0*/) const {
return MultiplyHigh(GetUptime(), ms_rdtsc_factor); return MultiplyHigh(GetUptime() - base_ptc, ms_rdtsc_factor);
} }
u64 NativeClock::GetUptime() const { u64 NativeClock::GetUptime() const {

6
src/common/native_clock.h
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@ -16,9 +16,9 @@ public:
return rdtsc_frequency; return rdtsc_frequency;
} }
u64 GetTimeNS() const; u64 GetTimeNS(u64 base_ptc = 0) const;
u64 GetTimeUS() const; u64 GetTimeUS(u64 base_ptc = 0) const;
u64 GetTimeMS() const; u64 GetTimeMS(u64 base_ptc = 0) const;
u64 GetUptime() const; u64 GetUptime() const;
u64 GetProcessTimeUS() const; u64 GetProcessTimeUS() const;

4
src/core/libraries/kernel/time_management.cpp
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@ -3,6 +3,7 @@
#include <thread> #include <thread>
#include "common/assert.h" #include "common/assert.h"
#include "common/debug.h"
#include "common/native_clock.h" #include "common/native_clock.h"
#include "core/libraries/error_codes.h" #include "core/libraries/error_codes.h"
#include "core/libraries/kernel/time_management.h" #include "core/libraries/kernel/time_management.h"
@ -30,7 +31,8 @@ u64 PS4_SYSV_ABI sceKernelGetTscFrequency() {
} }
u64 PS4_SYSV_ABI sceKernelGetProcessTime() { u64 PS4_SYSV_ABI sceKernelGetProcessTime() {
return clock->GetProcessTimeUS(); // TODO: this timer should support suspends, so initial ptc needs to be updated on wake up
return clock->GetTimeUS(initial_ptc);
} }
u64 PS4_SYSV_ABI sceKernelGetProcessTimeCounter() { u64 PS4_SYSV_ABI sceKernelGetProcessTimeCounter() {