thread-descriptor.c

来自「postgresql8.3.4源码,开源数据库」· C语言 代码 · 共 162 行

/* Processed by ecpg (regression mode) */
/* These include files are added by the preprocessor */
#include <ecpgtype.h>
#include <ecpglib.h>
#include <ecpgerrno.h>
#include <sqlca.h>
/* End of automatic include section */
#define ECPGdebug(X,Y) ECPGdebug((X)+100,(Y))

#line 1 "descriptor.pgc"
#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


#line 1 "sqlca.h"
#ifndef POSTGRES_SQLCA_H
#define POSTGRES_SQLCA_H

#ifndef PGDLLIMPORT
#if  defined(WIN32) || defined(__CYGWIN__)
#define PGDLLIMPORT __declspec (dllimport)
#else
#define PGDLLIMPORT
#endif   /* __CYGWIN__ */
#endif   /* PGDLLIMPORT */

#define SQLERRMC_LEN	150

#ifdef __cplusplus
extern		"C"
{
#endif

struct sqlca_t
{
	char		sqlcaid[8];
	long		sqlabc;
	long		sqlcode;
	struct
	{
		int			sqlerrml;
		char		sqlerrmc[SQLERRMC_LEN];
	}			sqlerrm;
	char		sqlerrp[8];
	long		sqlerrd[6];
	/* Element 0: empty						*/
	/* 1: OID of processed tuple if applicable			*/
	/* 2: number of rows processed				*/
	/* after an INSERT, UPDATE or				*/
	/* DELETE statement					*/
	/* 3: empty						*/
	/* 4: empty						*/
	/* 5: empty						*/
	char		sqlwarn[8];
	/* Element 0: set to 'W' if at least one other is 'W'	*/
	/* 1: if 'W' at least one character string		*/
	/* value was truncated when it was			*/
	/* stored into a host variable.				*/

	/*
	 * 2: if 'W' a (hopefully) non-fatal notice occurred
	 */	/* 3: empty */
	/* 4: empty						*/
	/* 5: empty						*/
	/* 6: empty						*/
	/* 7: empty						*/

	char		sqlstate[5];
};

struct sqlca_t *ECPGget_sqlca(void);

#ifndef POSTGRES_ECPG_INTERNAL
#define sqlca (*ECPGget_sqlca())
#endif

#ifdef __cplusplus
}
#endif

#endif

#line 15 "descriptor.pgc"

/* exec sql whenever sqlerror  sqlprint ; */
#line 16 "descriptor.pgc"

/* exec sql whenever not found  sqlprint ; */
#line 17 "descriptor.pgc"


#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)
	{
		ECPGallocate_desc(__LINE__, "mydesc");
#line 29 "descriptor.pgc"

if (sqlca.sqlcode < 0) sqlprint();
#line 29 "descriptor.pgc"

		ECPGdeallocate_desc(__LINE__, "mydesc");
#line 30 "descriptor.pgc"

if (sqlca.sqlcode < 0) sqlprint();
#line 30 "descriptor.pgc"

	}

	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;
}