src/tests/system/libroot/posix/signal_in_allocator_test2.cpp

   1 /*
   2  * Copyright 2008, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6 #include <errno.h>
   7 #include <signal.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <signal.h>
  11 #include <string.h>
  12
  13 #include <OS.h>
  14
  15
  16 static int64 sHandledSignals = 0;
  17
  18
  19 static status_t
  20 signal_pusher(void* data)
  21 {
  22         team_info teamInfo;
  23         get_team_info(B_CURRENT_TEAM, &teamInfo);
  24         thread_id mainThread = teamInfo.team;
  25
  26         while (true) {
  27                 send_signal(mainThread, SIGUSR1);
  28                 snooze(1000);
  29         }
  30
  31         return B_OK;
  32 }
  33
  34
  35 static void
  36 signal_handler(int signal)
  37 {
  38         sHandledSignals++;
  39 }
  40
  41
  42 static void
  43 allocator_thread(int level)
  44 {
  45         if (level > 100000)
  46                 return;
  47
  48         free(malloc(rand() % 10000));
  49
  50         allocator_thread(level + 1);
  51 }
  52
  53
  54 int
  55 main()
  56 {
  57         // Test program to reproduce bug #2562. Is finished quickly and must be run
  58         // in a loop to reproduce the bug.
  59
  60         // install signal handler
  61         if (signal(SIGUSR1, signal_handler) == SIG_ERR) {
  62                 fprintf(stderr, "Error: Failed to install signal handler: %s\n",
  63                         strerror(errno));
  64                 exit(1);
  65         }
  66
  67         // start signal thread
  68         thread_id signalThread = spawn_thread(&signal_pusher, "signal pusher",
  69                 B_NORMAL_PRIORITY, NULL);
  70         resume_thread(signalThread);
  71
  72         allocator_thread(0);
  73
  74         kill_thread(signalThread);
  75         snooze(1000);
  76
  77         printf("test successful, handled %lld signals\n", sHandledSignals);
  78
  79         return 0;
  80 }