1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28#include <stdio.h> 29#include <time.h> 30#include <signal.h> 31#include <pthread.h> 32#include <string.h> 33#include <unistd.h> 34 35void 36handle(sigval_t v) 37{ 38 time_t t; 39 char p[32]; 40 41 time(&t); 42 strftime(p, sizeof(p), "%T", localtime(&t)); 43 printf("%s thread %d, val = %d, signal captured.\n", 44 p, (int)pthread_self(), v.sival_int); 45 return; 46} 47 48int 49create(int seconds, int id) 50{ 51 timer_t tid; 52 struct sigevent se; 53 struct itimerspec ts, ots; 54 55 memset(&se, 0, sizeof (se)); 56 se.sigev_notify = SIGEV_THREAD; 57 se.sigev_notify_function = handle; 58 se.sigev_value.sival_int = id; 59 60 if (timer_create (CLOCK_REALTIME, &se, &tid) < 0) 61 { 62 perror ("timer_creat"); 63 return -1; 64 } 65 puts ("timer_create successfully."); 66 ts.it_value.tv_sec = 3; 67 ts.it_value.tv_nsec = 0; 68 ts.it_interval.tv_sec = seconds; 69 ts.it_interval.tv_nsec = 0; 70 if (timer_settime (tid, TIMER_ABSTIME, &ts, &ots) < 0) 71 { 72 perror ("timer_settime"); 73 return -1; 74 } 75 return 0; 76} 77 78int 79main (void) 80{ 81 if (create (3, 1) < 0) return 1; 82 if (create (5, 2) < 0) return 1; 83 for (;;) 84 { 85 sleep (10); 86 } 87 return 0; 88} 89