tests/compile/api0/hello/hello.c

   1 /*
   2  * SPDX-License-Identifier: LGPL-2.1-only
   3  *
   4  * Copyright (C) 2009 Pierre-Marc Fournier
   5  * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   6  */
   7
   8 #include <stdio.h>
   9 #include <unistd.h>
  10 #include <sys/mman.h>
  11 #include <stdarg.h>
  12 #include <sys/types.h>
  13 #include <sys/stat.h>
  14 #include <fcntl.h>
  15 #include <signal.h>
  16 #include <string.h>
  17 /*
  18  * Work-around inet.h missing struct mmsghdr forward declaration, with
  19  * triggers a warning when system files warnings are enabled.
  20  */
  21 struct mmsghdr;
  22 #include <arpa/inet.h>
  23 #include <stdlib.h>
  24 #include <stdbool.h>
  25
  26 #define TRACEPOINT_DEFINE
  27 #include "ust_tests_hello.h"
  28
  29 static
  30 void inthandler(int sig __attribute__((unused)))
  31 {
  32         printf("in SIGUSR1 handler\n");
  33         tracepoint(ust_tests_hello, tptest_sighandler);
  34 }
  35
  36 static
  37 int init_int_handler(void)
  38 {
  39         int result;
  40         struct sigaction act;
  41
  42         memset(&act, 0, sizeof(act));
  43         result = sigemptyset(&act.sa_mask);
  44         if (result == -1) {
  45                 perror("sigemptyset");
  46                 return -1;
  47         }
  48
  49         act.sa_handler = inthandler;
  50         act.sa_flags = SA_RESTART;
  51
  52         /* Only defer ourselves. Also, try to restart interrupted
  53          * syscalls to disturb the traced program as little as possible.
  54          */
  55         result = sigaction(SIGUSR1, &act, NULL);
  56         if (result == -1) {
  57                 perror("sigaction");
  58                 return -1;
  59         }
  60
  61         return 0;
  62 }
  63
  64 int main(int argc, char **argv)
  65 {
  66         int i, netint;
  67         long values[] = { 1, 2, 3 };
  68         char text[10] = "test";
  69         double dbl = 2.0;
  70         float flt = 2222.0;
  71         int delay = 0;
  72         bool mybool = 123;      /* should print "1" */
  73
  74         init_int_handler();
  75
  76         if (argc == 2)
  77                 delay = atoi(argv[1]);
  78
  79         fprintf(stderr, "Hello, World!\n");
  80
  81         sleep(delay);
  82
  83         fprintf(stderr, "Tracing... ");
  84         for (i = 0; i < 1000000; i++) {
  85                 netint = htonl(i);
  86                 tracepoint(ust_tests_hello, tptest, i, netint, values,
  87                            text, strlen(text), dbl, flt, mybool);
  88                 //usleep(100000);
  89         }
  90         fprintf(stderr, " done.\n");
  91         return 0;
  92 }