testing/test-cases/dyld_process_info_notify.dtest/target.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <dlfcn.h>
   5 #include <signal.h>
   6 #include <unistd.h>
   7 #include <mach/mach.h>
   8 #include <dispatch/dispatch.h>
   9
  10 void performDylibOperations(void) {
  11     for (int i=0; i < 3; ++i) {
  12         void* h = dlopen(RUN_DIR "/libfoo.dylib", 0);
  13         dlclose(h);
  14     }
  15     fprintf(stderr, "Done (pid: %d)\n", getpid());
  16     exit(0);
  17 }
  18
  19 int main(int argc, const char* argv[], const char* envp[], const char* apple[]) {
  20     signal(SIGUSR1, SIG_IGN);
  21     dispatch_source_t signalSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_PROC, getppid(),
  22                                                             DISPATCH_PROC_EXIT, dispatch_get_main_queue());
  23     dispatch_source_set_event_handler(signalSource, ^{
  24         exit(0);
  25     });
  26     dispatch_resume(signalSource);
  27
  28     if ( (argc > 1) && (strcmp(argv[1], "suspend-in-main") == 0) ) {
  29         dispatch_source_t signalSourceSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL,
  30                                                                       SIGUSR1, 0, dispatch_get_main_queue());
  31         dispatch_source_set_event_handler(signalSourceSource, ^{
  32             performDylibOperations();
  33         });
  34         dispatch_resume(signalSourceSource);
  35         dispatch_async(dispatch_get_main_queue(), ^{
  36             fprintf(stderr, "Ready (pid: %d)\n", getpid());
  37         });
  38     } else {
  39         performDylibOperations();
  40     }
  41
  42     dispatch_main();
  43 }
  44