1 #include <signal.h> 2 #include <stdio.h> 3 #include <unistd.h> 4 #include <sys/time.h> 5 #include "posixtest.h" 6 7 /* 8 9 * Copyright (c) 2002, Intel Corporation. All rights reserved. 10 * Created by: rolla.n.selbak REMOVE-THIS AT intel DOT com 11 * This file is licensed under the GPL license. For the full content 12 * of this license, see the COPYING file at the top level of this 13 * source tree. 14 15 * Test that the sigwait() function. If no signal in 'set' is pending at the 16 * time of the call, the thread shall be suspended until one or more becomes 17 * pending. 18 * 1) Block a signal from delivery. 19 * 2) Call sigwait() 20 * 3) Raise the signal. 21 * 4) Verify this process will return when the signal is sent. 22 */ 23 24 int main(void) 25 { 26 sigset_t newmask, pendingset; 27 int sig; 28 29 struct timeval tv_ref, tv_cur; 30 31 /* Empty set of blocked signals */ 32 33 if (sigemptyset(&newmask) == -1 || sigemptyset(&pendingset) == -1) { 34 printf("Error in sigemptyset()\n"); 35 return PTS_UNRESOLVED; 36 } 37 38 /* Add SIGALRM to the set of blocked signals */ 39 if (sigaddset(&newmask, SIGALRM) == -1) { 40 perror("Error in sigaddset()\n"); 41 return PTS_UNRESOLVED; 42 } 43 44 /* Block SIGALRM */ 45 if (sigprocmask(SIG_SETMASK, &newmask, NULL) == -1) { 46 printf("Error in sigprocmask()\n"); 47 return PTS_UNRESOLVED; 48 } 49 50 /* Read clock */ 51 if (gettimeofday(&tv_ref, NULL) != 0) { 52 printf("Failed to get time of day"); 53 return PTS_UNRESOLVED; 54 } 55 56 /* SIGALRM will be sent in 5 seconds */ 57 alarm(3); 58 59 /* Call sigwait. It should wait for 5 seconds and then move 60 * along the rest of the process when it received the SIGALRM */ 61 if (sigwait(&newmask, &sig) != 0) { 62 printf("Error in sigwait()\n"); 63 return PTS_UNRESOLVED; 64 } 65 66 /* Re-read clock */ 67 if (gettimeofday(&tv_cur, NULL) != 0) { 68 printf("Failed to get time of day"); 69 return PTS_UNRESOLVED; 70 } 71 72 /* Check the operation was blocking until the signal was generated */ 73 if (tv_cur.tv_sec - tv_ref.tv_sec < 2) { 74 printf("The operation lasted less than 3 seconds!\n"); 75 return PTS_FAIL; 76 } 77 78 /* If we get here, then the process was suspended until 79 * SIGALRM was raised. */ 80 printf("Test PASSED\n"); 81 82 return PTS_PASS; 83 84 } 85
