File: source-serial.c

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (38 lines) | stat: -rw-r--r-- 1,003 bytes parent folder | download | duplicates (30) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
 
// RUN: %clang_tsan %s -o %t
// RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer'

#include <dispatch/dispatch.h>

#include <stdio.h>

long global;

int main(int argc, const char *argv[]) {
  fprintf(stderr, "Hello world.\n");

  dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_SERIAL);
  dispatch_source_t timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, q);
  long long interval_ms = 10;
  dispatch_source_set_timer(timer, dispatch_time(DISPATCH_TIME_NOW, 0), interval_ms * NSEC_PER_MSEC, 0);

  dispatch_semaphore_t sem = dispatch_semaphore_create(0);
  dispatch_source_set_event_handler(timer, ^{
    fprintf(stderr, "timer\n");
    global++;

    if (global > 50) {
      dispatch_semaphore_signal(sem);
      dispatch_suspend(timer);
    }
  });
  dispatch_resume(timer);

  dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);

  fprintf(stderr, "Done.\n");
}

// CHECK: Hello world.
// CHECK: timer
// CHECK: Done.
// CHECK-NOT: timer