179 lines
3.9 KiB
C
179 lines
3.9 KiB
C
/*
|
|
*
|
|
* Copyright (c) International Business Machines Corp., 2002
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
|
|
* the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
/* 12/20/2002 Port to LTP robbiew@us.ibm.com */
|
|
/* 06/30/2001 Port to Linux nsharoff@us.ibm.com */
|
|
|
|
/*
|
|
* NAME
|
|
* shmt10.c - test simultaneous shmat/shmdt
|
|
*
|
|
* CALLS
|
|
* shmget, shmat, shmdt, shmctl
|
|
*
|
|
* ALGORITHM
|
|
* Create a shared memory segment and fork a child. Both
|
|
* parent and child spin in a loop attaching and detaching
|
|
* the segment. After completing the specified number of
|
|
* iterations, the child exits and the parent deletes the
|
|
* segment.
|
|
*
|
|
* USAGE
|
|
* shmt10 [-i 500]
|
|
* -i # of iterations, default 500
|
|
*
|
|
*/
|
|
|
|
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/ipc.h>
|
|
#include <sys/shm.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include <errno.h>
|
|
|
|
#define SIZE 0x32768
|
|
|
|
/** LTP Port **/
|
|
#include "test.h"
|
|
#include "usctest.h"
|
|
|
|
char *TCID="shmt10"; /* Test program identifier. */
|
|
int TST_TOTAL=2; /* Total number of test cases. */
|
|
extern int Tst_count; /* Test Case counter for tst_* routines */
|
|
/**************/
|
|
|
|
int shmid;
|
|
key_t key;
|
|
|
|
int child(int);
|
|
int rm_shm(int);
|
|
void fini(int);
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
char *c1=NULL;
|
|
int pid, st;
|
|
register int i;
|
|
int iter = 500;
|
|
int c;
|
|
extern char *optarg;
|
|
|
|
key = (key_t)getpid();
|
|
signal(SIGTERM, fini);
|
|
|
|
/*--------------------------------------------------------*/
|
|
|
|
while ((c = getopt(argc, argv, "i:")) != EOF) {
|
|
switch (c) {
|
|
case 'i':
|
|
iter = atoi(optarg);
|
|
break;
|
|
default:
|
|
tst_resm(TCONF, "usage: %s [-i <# iterations>]", argv[0]);
|
|
tst_exit();
|
|
}
|
|
}
|
|
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
if ((shmid = shmget(key, SIZE, IPC_CREAT|0666)) < 0) {
|
|
tst_resm(TFAIL,"shmget") ;
|
|
tst_resm(TFAIL, "Error: shmid = %d\n", shmid) ;
|
|
tst_exit() ;
|
|
}
|
|
|
|
pid = fork();
|
|
switch(pid) {
|
|
case -1:
|
|
tst_resm(TBROK,"fork failed");
|
|
tst_exit() ;
|
|
case 0:
|
|
child(iter);
|
|
tst_exit();
|
|
}
|
|
|
|
for (i = 0; i < iter; i++) {
|
|
if ((c1 = (char *) shmat(shmid, (void *)0, 0)) == (char *)-1) {
|
|
tst_resm(TFAIL,
|
|
"Error shmat: iter %d, shmid = %d\n", i, shmid);
|
|
break;
|
|
}
|
|
if (shmdt(c1) < 0) {
|
|
tst_resm(TFAIL,
|
|
"Error: shmdt: iter %d ", i) ;
|
|
break;
|
|
}
|
|
}
|
|
while ( wait(&st) < 0 && errno == EINTR )
|
|
;
|
|
tst_resm(TPASS,"shmat,shmdt");
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
rm_shm(shmid);
|
|
tst_exit();
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
return(0);
|
|
}
|
|
|
|
int rm_shm(shmid)
|
|
int shmid ;
|
|
{
|
|
if (shmctl(shmid, IPC_RMID, NULL) == -1) {
|
|
perror("shmctl");
|
|
tst_resm(TFAIL,
|
|
"shmctl Failed to remove: shmid = %d, errno = %d\n",
|
|
shmid, errno) ;
|
|
tst_exit();
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
int child(iter)
|
|
int iter;
|
|
{
|
|
register int i;
|
|
char *c1;
|
|
|
|
for (i = 0; i < iter; i++) {
|
|
if ((c1 = (char *) shmat(shmid, (void *)0, 0)) == (char *)-1) {
|
|
tst_resm(TFAIL,
|
|
"Error:child proc: shmat: iter %d, shmid = %d\n",
|
|
i, shmid);
|
|
tst_exit();
|
|
}
|
|
if (shmdt(c1) < 0) {
|
|
tst_resm(TFAIL,
|
|
"Error: child proc: shmdt: iter %d ", i);
|
|
tst_exit();
|
|
}
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
void
|
|
fini(int sig)
|
|
{
|
|
rm_shm(shmid);
|
|
}
|