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Platform ability to query system (logical) cores

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This commit is contained in:
Doyle Thai 2017-06-17 16:20:35 +10:00
parent 92953e9d7c
commit 35bdbb65de
4 changed files with 99 additions and 4 deletions
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2
src/DTRenderer.cpp
View File

@ -997,7 +997,7 @@ extern "C" void DTR_Update(PlatformRenderBuffer *const platformRenderBuffer,
DTRDebug_EndCycleCount(DTRDebugCycleCount_DTR_Update_RenderPrimitiveTriangles);
}
if (1)
if (0)
{
LOCAL_PERSIST bool runTinyRendererOnce = false;
if (1 && runTinyRendererOnce)

82
src/Win32DTRenderer.cpp
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@ -441,9 +441,15 @@ i32 Win32GetModuleDirectory(char *const buf, const u32 bufLen)
return lastSlashIndex;
}
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPWSTR lpCmdLine, int nShowCmd)
DWORD WINAPI Win32ThreadCallback(void *lpParameter)
{
OutputDebugString("Threaded Hello World!\n");
return 0;
}
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLine, int nShowCmd)
{
////////////////////////////////////////////////////////////////////////////
// Initialise Win32 Window
////////////////////////////////////////////////////////////////////////////
@ -563,6 +569,78 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
platformInput.flags.canUseSSE2 = IsProcessorFeaturePresent(PF_XMMI64_INSTRUCTIONS_AVAILABLE);
platformInput.flags.canUseRdtsc = IsProcessorFeaturePresent(PF_RDTSC_INSTRUCTION_AVAILABLE);
// Threading
{
const i32 USE_DEFAULT_STACK_SIZE = 0;
void *threadParam = NULL;
DWORD threadId;
HANDLE threadHandle = CreateThread(NULL, USE_DEFAULT_STACK_SIZE, Win32ThreadCallback,
threadParam, 0, &threadId);
////////////////////////////////////////////////////////////////////////
// Query CPU Cores
////////////////////////////////////////////////////////////////////////
i32 numCores = 1;
i32 numLogicalCores = 0;
SYSTEM_INFO systemInfo;
GetNativeSystemInfo(&systemInfo);
DqnWin32_OutputDebugString("Number of Logical Processors: %d\n",
systemInfo.dwNumberOfProcessors);
numLogicalCores = systemInfo.dwNumberOfProcessors;
DWORD logicalProcInfoRequiredSize = 0;
u8 insufficientBuffer = {};
GetLogicalProcessorInformationEx(
RelationProcessorCore, (SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *)insufficientBuffer,
&logicalProcInfoRequiredSize);
u8 *rawProcInfoArray =
(u8 *)DqnMemStack_Push(&globalPlatformMemory.tempStack, logicalProcInfoRequiredSize);
if (rawProcInfoArray)
{
if (GetLogicalProcessorInformationEx(
RelationProcessorCore,
(SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *)rawProcInfoArray,
&logicalProcInfoRequiredSize))
{
SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *logicalProcInfo =
(SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *)rawProcInfoArray;
DWORD bytesRead = 0;
do
{
// NOTE: High efficiency value has greater performance and less efficiency.
PROCESSOR_RELATIONSHIP *procInfo = &logicalProcInfo->Processor;
u32 efficiency = procInfo->EfficiencyClass;
DqnWin32_OutputDebugString("Core %d: Efficiency: %d\n", numCores++, efficiency);
DQN_ASSERT(logicalProcInfo->Relationship == RelationProcessorCore);
DQN_ASSERT(procInfo->GroupCount == 1);
bytesRead += logicalProcInfo->Size;
logicalProcInfo =
(SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX *)((u8 *)logicalProcInfo +
logicalProcInfo->Size);
} while (bytesRead < logicalProcInfoRequiredSize);
}
else
{
DqnWin32_DisplayLastError("GetLogicalProcessorInformationEx() failed");
}
}
else
{
DQN_WIN32_ERROR_BOX("DqnMemStack_Push() failed", NULL);
}
DqnMemStack_Pop(&globalPlatformMemory.tempStack, rawProcInfoArray,
logicalProcInfoRequiredSize);
}
////////////////////////////////////////////////////////////////////////////
// Update Loop
////////////////////////////////////////////////////////////////////////////

2
src/build.bat
View File

@ -39,7 +39,7 @@ REM wd4100 unused argument parameters
REM wd4201 nonstandard extension used: nameless struct/union
REM wd4189 local variable is initialised but not referenced
REM wd4505 unreferenced local function not used will be removed
set CompileFlags=-EHsc -GR- -Oi -MT -Z7 -W4 -wd4100 -wd4201 -wd4189 -wd4505 -O2 -FAsc /I..\src\external\
set CompileFlags=-EHsc -GR- -Oi -MT -Z7 -W4 -wd4100 -wd4201 -wd4189 -wd4505 -Od -FAsc /I..\src\external\
set DLLFlags=/Fm%ProjectName% /Fo%ProjectName% /Fa%ProjectName% /Fe%ProjectName%
set Win32Flags=/FmWin32DTRenderer /FeWin32DTRenderer

17
src/dqn.h
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@ -796,6 +796,8 @@ DQN_FILE_SCOPE void DqnWin32_GetClientDim (const HWND window, LONG *width, LO
DQN_FILE_SCOPE void DqnWin32_GetRectDim (RECT rect, LONG *width, LONG *height);
DQN_FILE_SCOPE void DqnWin32_DisplayLastError(const char *const errorPrefix);
DQN_FILE_SCOPE void DqnWin32_DisplayErrorCode(const DWORD error, const char *const errorPrefix);
DQN_FILE_SCOPE void DqnWin32_OutputDebugString(const char *const formatStr, ...);
#endif /* DQN_WIN32_IMPLEMENTATION */
@ -3270,6 +3272,21 @@ DQN_FILE_SCOPE void DqnWin32_DisplayErrorCode(const DWORD error, const char *con
Dqn_sprintf(formattedError, "%s: %s", errorPrefix, errorMsg);
DQN_WIN32_ERROR_BOX(formattedError, NULL);
}
DQN_FILE_SCOPE void DqnWin32_OutputDebugString(const char *const formatStr, ...)
{
LOCAL_PERSIST char str[1024] = {};
va_list argList;
va_start(argList, formatStr);
{
i32 numCopied = Dqn_vsprintf(str, formatStr, argList);
DQN_ASSERT(numCopied < DQN_ARRAY_COUNT(str));
}
va_end(argList);
OutputDebugString(str);
}
#endif // DQN_WIN32_PLATFROM
FILE_SCOPE bool DqnFile_OpenInternal(const wchar_t *const path,