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[c-host] added platform agnostic thread interface

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This commit is contained in:
Geoffrey McRae 2019-03-01 12:24:23 +11:00
parent d881df916e
commit 2c54fd2357
2 changed files with 75 additions and 1 deletions
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10
c-host/app.h
View File

@ -27,4 +27,12 @@ int app_main();
unsigned int os_shmemSize();
bool os_shmemMmap(void **ptr);
void os_shmemUnmap();
void os_shmemUnmap();
// os specific thread functions
typedef struct osThreadHandle osThreadHandle;
typedef int (*osThreadFunction)(void * opaque);
bool os_createThread(const char * name, osThreadFunction function, void * opaque, osThreadHandle ** handle);
bool os_joinThread (osThreadHandle * handle, int * resultCode);

66
c-host/windows/platform.c
View File

@ -29,6 +29,16 @@ static HANDLE shmemHandle = INVALID_HANDLE_VALUE;
static bool shmemOwned = false;
static IVSHMEM_MMAP shmemMap = {0};
struct osThreadHandle
{
const char * name;
osThreadFunction function;
void * opaque;
HANDLE handle;
DWORD threadID;
int resultCode;
};
int WINAPI WinMain(HINSTANCE hInstnace, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
HDEVINFO deviceInfoSet;
@ -146,4 +156,60 @@ void os_shmemUnmap()
DEBUG_WINERROR("DeviceIoControl failed", GetLastError());
else
shmemOwned = false;
}
static DWORD WINAPI threadWrapper(LPVOID lpParameter)
{
osThreadHandle * handle = (osThreadHandle *)lpParameter;
handle->resultCode = handle->function(handle->opaque);
return 0;
}
bool os_createThread(const char * name, osThreadFunction function, void * opaque, osThreadHandle ** handle)
{
*handle = (osThreadHandle *)malloc(sizeof(osThreadHandle));
(*handle)->name = name;
(*handle)->opaque = opaque;
(*handle)->handle = CreateThread(NULL, 0, threadWrapper, *handle, 0, &(*handle)->threadID);
if (!(*handle)->handle)
{
free(*handle);
*handle = NULL;
DEBUG_WINERROR("CreateThread failed", GetLastError());
return false;
}
return true;
}
bool os_joinThread(osThreadHandle * handle, int * resultCode)
{
while(true)
{
switch(WaitForSingleObject(handle->handle, INFINITE))
{
case WAIT_OBJECT_0:
if (resultCode)
*resultCode = handle->resultCode;
CloseHandle(handle->handle);
free(handle);
return true;
case WAIT_ABANDONED:
case WAIT_TIMEOUT:
continue;
case WAIT_FAILED:
DEBUG_WINERROR("Wait for thread failed", GetLastError());
CloseHandle(handle->handle);
free(handle);
return false;
}
break;
}
DEBUG_WINERROR("Unknown failure waiting for thread", GetLastError());
return false;
}