1// Copyright 2016 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5// Test that using the Go profiler in a C program does not crash.
6
7#include <stddef.h>
8#include <sys/time.h>
9
10#include "libgo6.h"
11
12int main(int argc, char **argv) {
13 struct timeval tvstart, tvnow;
14 int diff;
15
16 gettimeofday(&tvstart, NULL);
17
18 go_start_profile();
19
20 // Busy wait so we have something to profile.
21 // If we just sleep the profiling signal will never fire.
22 while (1) {
23 gettimeofday(&tvnow, NULL);
24 diff = (tvnow.tv_sec - tvstart.tv_sec) * 1000 * 1000 + (tvnow.tv_usec - tvstart.tv_usec);
25
26 // Profile frequency is 100Hz so we should definitely
27 // get a signal in 50 milliseconds.
28 if (diff > 50 * 1000)
29 break;
30 }
31
32 go_stop_profile();
33 return 0;
34}
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