/* Processed by ecpg (regression mode) */
/* These include files are added by the preprocessor */
#include <ecpglib.h>
#include <ecpgerrno.h>
#include <sqlca.h>
/* End of automatic include section */
#define ECPGdebug(X,Y) ECPGdebug((X)+100 ,(Y))
#line 1 "thread.pgc"
/*
* Thread test program
* by Philip Yarra & Lee Kindness .
*/
#include <stdint.h>
#include <stdlib.h>
#include "ecpg_config.h"
#ifndef WIN32
#include <pthread.h>
#else
#include <windows.h>
#include <locale.h>
#endif
#line 1 "regression.h"
#line 16 "thread.pgc"
void *test_thread(void *arg);
int nthreads = 10 ;
int iterations = 20 ;
int main()
{
#ifndef WIN32
pthread_t *threads;
#else
HANDLE *threads;
#endif
intptr_t n;
/* exec sql begin declare section */
#line 32 "thread.pgc"
int l_rows ;
/* exec sql end declare section */
#line 33 "thread.pgc"
/* Do not switch on debug output for regression tests. The threads get executed in
* more or less random order */
/* ECPGdebug(1, stderr); */
/* setup test_thread table */
{ ECPGconnect(__LINE__, 0 , "ecpg1_regression" , NULL, NULL , NULL, 0 ); }
#line 40 "thread.pgc"
{ ECPGdo(__LINE__, 0 , 1 , NULL, 0 , ECPGst_normal, "drop table test_thread" , ECPGt_EOIT, ECPGt_EORT);}
#line 41 "thread.pgc"
/* DROP might fail */
{ ECPGtrans(__LINE__, NULL, "commit" );}
#line 42 "thread.pgc"
{ ECPGdo(__LINE__, 0 , 1 , NULL, 0 , ECPGst_normal, "create table test_thread ( tstamp timestamp not null default cast ( timeofday ( ) as timestamp ) , thread text not null , iteration integer not null , primary key ( thread , iteration ) )" , ECPGt_EOIT, ECPGt_EORT);}
#line 47 "thread.pgc"
{ ECPGtrans(__LINE__, NULL, "commit" );}
#line 48 "thread.pgc"
{ ECPGdisconnect(__LINE__, "CURRENT" );}
#line 49 "thread.pgc"
/* create, and start, threads */
threads = calloc(nthreads, sizeof (threads[0 ]));
if ( threads == NULL )
{
fprintf(stderr, "Cannot alloc memory\n" );
return 1 ;
}
for ( n = 0 ; n < nthreads; n++ )
{
#ifndef WIN32
pthread_create(&threads[n], NULL, test_thread, (void *) (n + 1 ));
#else
threads[n] = CreateThread(NULL, 0 , (LPTHREAD_START_ROUTINE) (void (*) (void )) test_thread, (void *) (n + 1 ), 0 , NULL);
#endif
}
/* wait for thread completion */
#ifndef WIN32
for ( n = 0 ; n < nthreads; n++ )
{
pthread_join(threads[n], NULL);
}
#else
WaitForMultipleObjects(nthreads, threads, TRUE , INFINITE);
#endif
free(threads);
/* and check results */
{ ECPGconnect(__LINE__, 0 , "ecpg1_regression" , NULL, NULL , NULL, 0 ); }
#line 79 "thread.pgc"
{ ECPGdo(__LINE__, 0 , 1 , NULL, 0 , ECPGst_normal, "select count ( * ) from test_thread" , ECPGt_EOIT,
ECPGt_int,&(l_rows),(long )1 ,(long )1 ,sizeof (int ),
ECPGt_NO_INDICATOR, NULL , 0 L, 0 L, 0 L, ECPGt_EORT);}
#line 80 "thread.pgc"
{ ECPGtrans(__LINE__, NULL, "commit" );}
#line 81 "thread.pgc"
{ ECPGdisconnect(__LINE__, "CURRENT" );}
#line 82 "thread.pgc"
if ( l_rows == (nthreads * iterations) )
printf("Success.\n" );
else
printf("ERROR: Failure - expecting %d rows, got %d.\n" , nthreads * iterations, l_rows);
return 0 ;
}
void *test_thread(void *arg)
{
long threadnum = (intptr_t) arg;
/* exec sql begin declare section */
#line 96 "thread.pgc"
int l_i ;
#line 97 "thread.pgc"
char l_connection [ 128 ] ;
/* exec sql end declare section */
#line 98 "thread.pgc"
/* build up connection name, and connect to database */
#ifndef _MSC_VER
snprintf(l_connection, sizeof (l_connection), "thread_%03ld" , threadnum);
#else
_snprintf(l_connection, sizeof (l_connection), "thread_%03ld" , threadnum);
#endif
/* exec sql whenever sqlerror sqlprint ; */
#line 106 "thread.pgc"
{ ECPGconnect(__LINE__, 0 , "ecpg1_regression" , NULL, NULL , l_connection, 0 );
#line 107 "thread.pgc"
if (sqlca.sqlcode < 0 ) sqlprint();}
#line 107 "thread.pgc"
if ( sqlca.sqlcode != 0 )
{
printf("%s: ERROR: cannot connect to database!\n" , l_connection);
return NULL;
}
{ ECPGtrans(__LINE__, l_connection, "begin" );
#line 113 "thread.pgc"
if (sqlca.sqlcode < 0 ) sqlprint();}
#line 113 "thread.pgc"
/* insert into test_thread table */
for ( l_i = 1 ; l_i <= iterations; l_i++ )
{
{ ECPGdo(__LINE__, 0 , 1 , l_connection, 0 , ECPGst_normal, "insert into test_thread ( thread , iteration ) values ( $1 , $2 )" ,
ECPGt_char,(l_connection),(long )128 ,(long )1 ,(128 )*sizeof (char ),
ECPGt_NO_INDICATOR, NULL , 0 L, 0 L, 0 L,
ECPGt_int,&(l_i),(long )1 ,(long )1 ,sizeof (int ),
ECPGt_NO_INDICATOR, NULL , 0 L, 0 L, 0 L, ECPGt_EOIT, ECPGt_EORT);
#line 118 "thread.pgc"
if (sqlca.sqlcode < 0 ) sqlprint();}
#line 118 "thread.pgc"
if ( sqlca.sqlcode != 0 )
printf("%s: ERROR: insert failed!\n" , l_connection);
}
/* all done */
{ ECPGtrans(__LINE__, l_connection, "commit" );
#line 124 "thread.pgc"
if (sqlca.sqlcode < 0 ) sqlprint();}
#line 124 "thread.pgc"
{ ECPGdisconnect(__LINE__, l_connection);
#line 125 "thread.pgc"
if (sqlca.sqlcode < 0 ) sqlprint();}
#line 125 "thread.pgc"
return NULL;
}
Messung V0.5 in Prozent C=95 H=98 G=96
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-08-08)
¤
*© Formatika GbR, Deutschland