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/*
* dll.c
*
* Description:
* This translation unit implements DLL initialisation.
*/
/* We use the DLL entry point function to set up per thread storage
specifically to hold the threads own thread ID.
The thread ID is stored by _pthread_start_call().
The thread ID is retrieved by pthread_self().
*/
#include <windows.h>
#include <malloc.h>
#include "pthread.h"
#include "implement.h"
/* Global index for TLS data. */
DWORD _pthread_threadID_TlsIndex;
/* Global index for thread TSD key array. */
DWORD _pthread_TSD_keys_TlsIndex;
/* Function pointer to TryEnterCriticalSection if it exists; otherwise NULL */
BOOL (WINAPI *_pthread_try_enter_critical_section)(LPCRITICAL_SECTION) = NULL;
/* Handle to kernel32.dll */
static HINSTANCE _pthread_h_kernel32;
BOOL WINAPI PthreadsEntryPoint(HINSTANCE dllHandle,
DWORD reason,
LPVOID situation)
{
switch (reason)
{
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
break;
case DLL_PROCESS_ATTACH:
/* Set up per thread thread ID storage. */
_pthread_threadID_TlsIndex = TlsAlloc();
if (_pthread_threadID_TlsIndex == 0xFFFFFFFF)
{
return FALSE;
}
/* Set up per thread TSD key array pointer. */
_pthread_TSD_keys_TlsIndex = TlsAlloc();
if (_pthread_TSD_keys_TlsIndex == 0xFFFFFFFF)
{
return FALSE;
}
/* Load KERNEL32 and try to get address of TryEnterCriticalSection */
_pthread_h_kernel32 = LoadLibrary(TEXT("KERNEL32.DLL"));
_pthread_try_enter_critical_section = GetProcAddress(_pthread_h_kernel32, "TryEnterCriticalSection");
break;
case DLL_PROCESS_DETACH:
(void) TlsFree(_pthread_TSD_keys_TlsIndex);
(void) TlsFree(_pthread_threadID_TlsIndex);
(void) FreeLibrary(_pthread_h_kernel32);
break;
default:
return FALSE;
}
return TRUE;
}
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