blob: 7395251ed820b1a6d110c242c21d8723f0a0e071 [file] [log] [blame]
/* Do stupid things with semaphores, and check that Thrcheck doesn't
fall over and does report errors appropriately. If nothing else
this just checks that the relevant functions are getting
intercepted. */
/* This is pretty lame, because making the sem_ functions fail is
difficult. Not sure it's really worth having. */
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <pthread.h>
#include <semaphore.h>
#include <string.h>
void start_watchdog ( void );
int main ( void )
int r __attribute__((unused));
sem_t s1;
/* Do sem_init with huge initial count */
r= sem_init(&s1, 0, ~0);
/* initialise properly */
r= sem_init(&s1, 0, 0);
/* in glibc, sem_destroy is a no-op; making it fail is
impossible. */
/* Do 'wait' on a bogus semaphore. This should fail, but on glibc
it succeeds. */
memset(&s1, 0x55, sizeof(s1));
r= sem_wait(&s1); /* assert(r != 0); */
/* this only fails with glibc 2.7 and later. */
r= sem_post(&s1);
return 0;
void* watchdog ( void* v )
fprintf(stderr, "watchdog timer expired - not a good sign\n");
void start_watchdog ( void )
pthread_t t;
int r;
r= pthread_create(&t, NULL, watchdog, NULL);