mqtest5.c revision 205225
1/* $FreeBSD: head/tools/regression/mqueue/mqtest5/mqtest5.c 205225 2010-03-16 20:42:54Z kib $ */ 2 3#include <sys/types.h> 4#include <sys/event.h> 5#include <sys/select.h> 6#include <sys/wait.h> 7#include <err.h> 8#include <fcntl.h> 9#include <mqueue.h> 10#include <signal.h> 11#include <stdio.h> 12#include <stdlib.h> 13#include <unistd.h> 14 15#define MQNAME "/mytstqueue5" 16#define LOOPS 1000 17#define PRIO 10 18 19void sighandler(int sig) 20{ 21 write(1, "timeout\n", 8); 22 _exit(1); 23} 24 25int main() 26{ 27 mqd_t mq; 28 int status; 29 struct mq_attr attr; 30 int pid; 31 sigset_t set; 32 struct sigaction sa; 33 siginfo_t info; 34 35 mq_unlink(MQNAME); 36 37 sigemptyset(&set); 38 sigaddset(&set, SIGRTMIN); 39 sigprocmask(SIG_BLOCK, &set, NULL); 40 sigemptyset(&sa.sa_mask); 41 sa.sa_flags = SA_SIGINFO; 42 sa.sa_sigaction = (void *) SIG_DFL; 43 sigaction(SIGRTMIN, &sa, NULL); 44 45 attr.mq_maxmsg = 5; 46 attr.mq_msgsize = 128; 47 mq = mq_open(MQNAME, O_CREAT | O_RDWR | O_EXCL, 0666, &attr); 48 if (mq == (mqd_t)-1) 49 err(1, "mq_open()"); 50 status = mq_getattr(mq, &attr); 51 if (status) 52 err(1, "mq_getattr()"); 53 pid = fork(); 54 if (pid == 0) { /* child */ 55 int prio, j, i; 56 char *buf; 57 struct sigevent sigev; 58 59 signal(SIGALRM, sighandler); 60 61 sigev.sigev_notify = SIGEV_SIGNAL; 62 sigev.sigev_signo = SIGRTMIN; 63 sigev.sigev_value.sival_int = 2; 64 65 mq_close(mq); 66 mq = mq_open(MQNAME, O_RDWR | O_NONBLOCK); 67 if (mq == (mqd_t)-1) 68 err(1, "child: mq_open"); 69 buf = malloc(attr.mq_msgsize); 70 for (j = 0; j < LOOPS; ++j) { 71 alarm(3); 72 status = mq_notify(mq, &sigev); 73 if (status) 74 err(1, "child: mq_notify"); 75 status = sigwaitinfo(&set, &info); 76 if (status == -1) 77 err(1, "child: sigwaitinfo"); 78 if (info.si_value.sival_int != 2) 79 err(1, "child: sival_int"); 80 status = mq_receive(mq, buf, attr.mq_msgsize, &prio); 81 if (status == -1) 82 err(2, "child: mq_receive"); 83 for (i = 0; i < attr.mq_msgsize; ++i) 84 if (buf[i] != i) 85 err(3, "child: message data corrupted"); 86 if (prio != PRIO) 87 err(4, "child: priority is incorrect: %d", 88 prio); 89 } 90 alarm(0); 91 free(buf); 92 mq_close(mq); 93 return (0); 94 } else if (pid == -1) { 95 err(1, "fork()"); 96 } else { 97 char *buf; 98 int i, j, prio; 99 100 signal(SIGALRM, sighandler); 101 buf = malloc(attr.mq_msgsize); 102 for (j = 0; j < LOOPS; ++j) { 103 for (i = 0; i < attr.mq_msgsize; ++i) { 104 buf[i] = i; 105 } 106 alarm(3); 107 status = mq_send(mq, buf, attr.mq_msgsize, PRIO); 108 if (status) { 109 kill(pid, SIGKILL); 110 err(2, "mq_send()"); 111 } 112 } 113 alarm(3); 114 wait(&status); 115 alarm(0); 116 } 117 status = mq_close(mq); 118 if (status) 119 err(1, "mq_close"); 120 mq_unlink(MQNAME); 121 return (0); 122} 123