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System: Check host page size on startup

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This commit is contained in:
Stenzek
2024-05-16 17:24:42 +10:00
parent a5b1ee4f04
commit 35bdbf2a55
8 changed files with 182 additions and 25 deletions
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28
src/util/platform_misc_unix.cpp
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@ -121,6 +121,34 @@ void PlatformMisc::ResumeScreensaver()
s_screensaver_suspended = false;
}
size_t PlatformMisc::GetRuntimePageSize()
{
int res = sysconf(_SC_PAGESIZE);
return (res > 0) ? static_cast<size_t>(res) : 0;
}
size_t PlatformMisc::GetRuntimeCacheLineSize()
{
int l1i = sysconf(_SC_LEVEL1_DCACHE_LINESIZE);
int l1d = sysconf(_SC_LEVEL1_ICACHE_LINESIZE);
int res = (l1i > l1d) ? l1i : l1d;
for (int index = 0; index < 16; index++)
{
char buf[128];
snprintf(buf, sizeof(buf), "/sys/devices/system/cpu/cpu0/cache/index%d/coherency_line_size", index);
std::FILE* fp = std::fopen(buf, "rb");
if (!fp)
break;
std::fread(buf, sizeof(buf), 1, fp);
std::fclose(fp);
int val = std::atoi(buf);
res = (val > res) ? val : res;
}
return (res > 0) ? static_cast<size_t>(res) : 0;
}
bool PlatformMisc::PlaySoundAsync(const char* path)
{
#ifdef __linux__