| /* |
| * Copyright (c) 2003, Intel Corporation. All rights reserved. |
| * Created by: majid.awad REMOVE-THIS AT intel DOT com |
| * This file is licensed under the GPL license. For the full content |
| * of this license, see the COPYING file at the top level of this |
| * source tree. |
| */ |
| |
| /* sem_timedwait will return successfully when sem_post |
| * will unlock the semaphore from another process. |
| */ |
| |
| #define _XOPEN_SOURCE 600 |
| |
| #include <stdio.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <semaphore.h> |
| #include <sys/stat.h> |
| #include <sys/wait.h> |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <time.h> |
| #include "posixtest.h" |
| |
| #define TEST "2-1" |
| #define FUNCTION "sem_timedwait" |
| #define ERROR_PREFIX "unexpected error: " FUNCTION " " TEST ": " |
| |
| int main(void) |
| { |
| sem_t mysemp; |
| struct timespec ts; |
| int pid; |
| |
| /* Semaphore started out locked */ |
| if (sem_init(&mysemp, 0, 0) == -1) { |
| perror(ERROR_PREFIX "sem_init"); |
| return PTS_UNRESOLVED; |
| } |
| |
| pid = fork(); |
| if (pid == 0) // child to lock semaphore |
| { |
| ts.tv_sec = time(NULL) + 2; |
| ts.tv_nsec = 0; |
| |
| if (sem_timedwait(&mysemp, &ts) == -1) { |
| puts("TEST FAILED"); |
| return PTS_FAIL; |
| } else { |
| puts("TEST PASSED"); |
| sem_destroy(&mysemp); |
| return PTS_PASS; |
| } |
| } else if (pid > 0) // parent to unlock semaphore |
| { |
| int i; |
| sleep(1); |
| if (sem_post(&mysemp) == -1) { |
| perror(ERROR_PREFIX "sem_post"); |
| return PTS_FAIL; |
| } |
| if (wait(&i) == -1) { |
| perror("Error waiting for child to exit"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (!WEXITSTATUS(i)) { |
| return PTS_FAIL; |
| } |
| puts("TEST PASSED"); |
| sem_destroy(&mysemp); |
| return PTS_PASS; |
| } |
| return PTS_UNRESOLVED; |
| } |