sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 1 | |
| 2 | /* Do stupid things with semaphores, and check that Thrcheck doesn't |
| 3 | fall over and does report errors appropriately. If nothing else |
| 4 | this just checks that the relevant functions are getting |
| 5 | intercepted. */ |
| 6 | |
| 7 | /* This is pretty lame, because making the sem_ functions fail is |
| 8 | difficult. Not sure it's really worth having. */ |
sewardj | 862ed5e | 2007-11-11 05:52:36 +0000 | [diff] [blame] | 9 | #include <unistd.h> |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 10 | #include <stdio.h> |
| 11 | #include <stdlib.h> |
| 12 | #include <assert.h> |
| 13 | #include <pthread.h> |
mjw | 0c66d2e | 2015-09-04 09:41:42 +0000 | [diff] [blame] | 14 | #include "safe-semaphore.h" |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 15 | #include <string.h> |
sewardj | 862ed5e | 2007-11-11 05:52:36 +0000 | [diff] [blame] | 16 | void start_watchdog ( void ); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 17 | int main ( void ) |
| 18 | { |
bart | f976f6c | 2011-04-03 17:42:19 +0000 | [diff] [blame] | 19 | int r __attribute__((unused)); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 20 | sem_t s1; |
sewardj | 862ed5e | 2007-11-11 05:52:36 +0000 | [diff] [blame] | 21 | start_watchdog(); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 22 | /* Do sem_init with huge initial count */ |
| 23 | r= sem_init(&s1, 0, ~0); |
| 24 | |
| 25 | /* initialise properly */ |
| 26 | r= sem_init(&s1, 0, 0); |
| 27 | |
| 28 | /* in glibc, sem_destroy is a no-op; making it fail is |
| 29 | impossible. */ |
| 30 | |
| 31 | /* Do 'wait' on a bogus semaphore. This should fail, but on glibc |
| 32 | it succeeds. */ |
| 33 | memset(&s1, 0x55, sizeof(s1)); |
| 34 | r= sem_wait(&s1); /* assert(r != 0); */ |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 35 | #if defined(VGO_solaris) |
| 36 | assert(r != 0); |
| 37 | #endif |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 38 | |
sewardj | e3b57aa | 2008-01-18 07:42:01 +0000 | [diff] [blame] | 39 | /* this only fails with glibc 2.7 and later. */ |
| 40 | r= sem_post(&s1); |
sewardj | b411202 | 2007-11-09 22:49:28 +0000 | [diff] [blame] | 41 | |
| 42 | sem_destroy(&s1); |
| 43 | |
| 44 | return 0; |
| 45 | } |
sewardj | 862ed5e | 2007-11-11 05:52:36 +0000 | [diff] [blame] | 46 | |
| 47 | void* watchdog ( void* v ) |
| 48 | { |
| 49 | sleep(10); |
| 50 | fprintf(stderr, "watchdog timer expired - not a good sign\n"); |
| 51 | exit(0); |
| 52 | } |
| 53 | |
| 54 | void start_watchdog ( void ) |
| 55 | { |
| 56 | pthread_t t; |
| 57 | int r; |
| 58 | r= pthread_create(&t, NULL, watchdog, NULL); |
| 59 | assert(!r); |
| 60 | } |