descriptor.pgc

来自「postgresql8.3.4源码,开源数据库」· PGC 代码 · 共 68 行

#ifdef ENABLE_THREAD_SAFETY
#ifdef WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <process.h>
#else
#include <pthread.h>
#endif
#endif
#include <stdio.h>

#define THREADS		16
#define REPEATS		50000

EXEC SQL include sqlca;
EXEC SQL whenever sqlerror sqlprint;
EXEC SQL whenever not found sqlprint;

#if defined(ENABLE_THREAD_SAFETY) && defined(WIN32)
static unsigned __stdcall fn(void* arg)
#else
static void* fn(void* arg)
#endif
{
	int i;

	for (i = 1; i <= REPEATS; ++i)
	{
		EXEC SQL ALLOCATE DESCRIPTOR mydesc;
		EXEC SQL DEALLOCATE DESCRIPTOR mydesc;
	}

	return 0;
}

int main (int argc, char** argv)
{
#ifdef ENABLE_THREAD_SAFETY
	int i;
#ifdef WIN32
	HANDLE threads[THREADS];
#else
	pthread_t threads[THREADS];
#endif

#ifdef WIN32
	for (i = 0; i < THREADS; ++i)
	{
		unsigned id;
		threads[i] = (HANDLE)_beginthreadex(NULL, 0, fn, NULL, 0, &id);
	}

	WaitForMultipleObjects(THREADS, threads, TRUE, INFINITE);
	for (i = 0; i < THREADS; ++i)
		CloseHandle(threads[i]);
#else
	for (i = 0; i < THREADS; ++i)
		pthread_create(&threads[i], NULL, fn, NULL);
	for (i = 0; i < THREADS; ++i)
		pthread_join(threads[i], NULL);
#endif
#else
	fn(NULL);
#endif

	return 0;
}