openssl 线程安全 Windows

openssl 线程安全

在初始化的时候 调用 thread_setup，在结束的时候调用thread_cleanup。代码摘自crypto/threads/mttest.c

static unsigned long _stdcall thread_id(void)

{

unsigned long ret;

ret=(unsigned long)GetCurrentThreadId();

return ret;

}

void thread_setup(void)

{

int i;

m_hLock_csArray = (HANDLE*)OPENSSL_malloc(CRYPTO_num_locks() * sizeof(HANDLE));

for (i = 0; i < CRYPTO_num_locks(); i++) {

m_hLock_csArray[i] = CreateMutex(NULL, FALSE, NULL);

}

CRYPTO_set_locking_callback((void (*)(int, int, const char *, int))win32_locking_callback);

CRYPTO_set_id_callback((unsigned long (*)())thread_id);

}

void thread_cleanup(void)

{

int i;

CRYPTO_set_locking_callback(NULL);

for (i = 0; i < CRYPTO_num_locks(); i++)

CloseHandle(m_hLock_csArray[i]);

OPENSSL_free(m_hLock_csArray);

}

static void _stdcall win32_locking_callback(int mode, int type, const char *file, int line)

{

if (mode & CRYPTO_LOCK) {

WaitForSingleObject(m_hLock_csArray[type], INFINITE);

} else {

ReleaseMutex(m_hLock_csArray[type]);

}

}