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kernel/time: Implement monotonic real-time network clock (#5217)

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Marcin Mitura authored and GitHub committed 2026-10-02 13:19:15 -07:00
1 parent bf794b3fe7
commit 62653e388c
1 file changed
+16 -4
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src/core/libraries/kernel/time.cpp
+16 -4
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@@ -29,6 +29,8 @@
namespace Libraries::Kernel {
static u64 initial_ptc;
static std::chrono::system_clock::time_point network_boottime;
static std::chrono::steady_clock::time_point initial_uptime;
static std::unique_ptr<Common::NativeClock> clock;
u64 PS4_SYSV_ABI sceKernelGetTscFrequency() {
@@ -129,8 +131,15 @@ s32 PS4_SYSV_ABI posix_clock_gettime(u32 clock_id, OrbisKernelTimespec* ts) {
}
if (clock_id == ORBIS_CLOCK_EXT_NETWORK || clock_id == ORBIS_CLOCK_EXT_DEBUG_NETWORK ||
clock_id == ORBIS_CLOCK_EXT_AD_NETWORK || clock_id == ORBIS_CLOCK_EXT_RAW_NETWORK) {
LOG_ERROR(Lib_Kernel, "Unsupported clock type {}, using CLOCK_MONOTONIC", clock_id);
clock_id = ORBIS_CLOCK_MONOTONIC;
const auto current_time =
network_boottime + (std::chrono::steady_clock::now() - initial_uptime);
const auto epoch_ns =
std::chrono::duration_cast<std::chrono::nanoseconds>(current_time.time_since_epoch())
.count();
ts->tv_sec = epoch_ns / 1'000'000'000;
ts->tv_nsec = epoch_ns % 1'000'000'000;
return 0;
}
#ifdef _WIN32
@@ -300,8 +309,9 @@ s32 PS4_SYSV_ABI posix_clock_getres(u32 clock_id, OrbisKernelTimespec* res) {
if (clock_id == ORBIS_CLOCK_EXT_NETWORK || clock_id == ORBIS_CLOCK_EXT_DEBUG_NETWORK ||
clock_id == ORBIS_CLOCK_EXT_AD_NETWORK || clock_id == ORBIS_CLOCK_EXT_RAW_NETWORK) {
LOG_ERROR(Lib_Kernel, "Unsupported clock type {}, using CLOCK_MONOTONIC", clock_id);
clock_id = ORBIS_CLOCK_MONOTONIC;
res->tv_sec = 0;
res->tv_nsec = 1;
return 0;
}
#ifdef _WIN32
@@ -546,6 +556,8 @@ s32 PS4_SYSV_ABI sceKernelSettimeofday(OrbisKernelTimeval* _tv, OrbisKernelTimez
void RegisterTime(Core::Loader::SymbolsResolver* sym) {
clock = std::make_unique<Common::NativeClock>();
initial_ptc = clock->GetUptime();
network_boottime = std::chrono::system_clock::now();
initial_uptime = std::chrono::steady_clock::now();
// POSIX
LIB_FUNCTION("NhpspxdjEKU", "libkernel", 1, "libkernel", posix_nanosleep);