/* * dll.c * * Description: * This translation unit implements DLL initialisation. */ #include <malloc.h> #include "pthread.h" #include "implement.h" /* * 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; #ifdef _MSC_VER /* * lpvReserved yields an unreferenced formal parameter; * ignore it */ #pragma warning( disable : 4100 ) #endif #ifdef __cplusplus /* * Dear c++: Please don't mangle this name. -thanks */ extern "C" { #endif /* __cplusplus */ BOOL WINAPI DllMain( HINSTANCE, DWORD, LPVOID); #ifdef __cplusplus } #endif /* __cplusplus */ BOOL WINAPI DllMain ( HINSTANCE hinstDll, DWORD fdwReason, LPVOID lpvReserved ) { BOOL result = TRUE; switch (fdwReason) { case DLL_PROCESS_ATTACH: /* * The DLL is being mapped into the process's address space */ result = _pthread_processInitialize (); /* Load KERNEL32 and try to get address of TryEnterCriticalSection */ _pthread_h_kernel32 = LoadLibrary(TEXT("KERNEL32.DLL")); _pthread_try_enter_critical_section = (BOOL (PT_STDCALL *)(LPCRITICAL_SECTION)) GetProcAddress(_pthread_h_kernel32, (LPCSTR) "TryEnterCriticalSection"); break; case DLL_THREAD_ATTACH: /* * A thread is being created */ result = TRUE; break; case DLL_THREAD_DETACH: case DLL_PROCESS_DETACH: /* * A thread is exiting cleanly * NOTE: The "main" thread detaches using * DLL_PROCESS_DETACH */ { pthread_t self; if (_pthread_processInitialized) { self = (pthread_t) pthread_getspecific (_pthread_selfThreadKey); /* * Detached threads have their resources automatically * cleaned up upon exit (others must be 'joined' */ if (self != NULL && self->detachState == PTHREAD_CREATE_DETACHED) { pthread_setspecific (_pthread_selfThreadKey, NULL); _pthread_threadDestroy (self); } if (fdwReason == DLL_PROCESS_DETACH) { /* * The DLL is being unmapped into the process's address space */ _pthread_processTerminate (); (void) FreeLibrary(_pthread_h_kernel32); } } result = TRUE; } break; } return (result); } /* DllMain */