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https://github.com/golang/go
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e24228af25
This ensures that SIGPROF is handled correctly when using runtime/pprof in a c-archive or c-shared library. Separate profiler handling into pre-process changes and per-thread changes. Simplify the Windows code slightly accordingly. Fixes #18220. Change-Id: I5060f7084c91ef0bbe797848978bdc527c312777 Reviewed-on: https://go-review.googlesource.com/34018 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com>
35 lines
830 B
C
35 lines
830 B
C
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test that using the Go profiler in a C program does not crash.
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#include <stddef.h>
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#include <sys/time.h>
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#include "libgo6.h"
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int main(int argc, char **argv) {
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struct timeval tvstart, tvnow;
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int diff;
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gettimeofday(&tvstart, NULL);
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go_start_profile();
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// Busy wait so we have something to profile.
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// If we just sleep the profiling signal will never fire.
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while (1) {
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gettimeofday(&tvnow, NULL);
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diff = (tvnow.tv_sec - tvstart.tv_sec) * 1000 * 1000 + (tvnow.tv_usec - tvstart.tv_usec);
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// Profile frequency is 100Hz so we should definitely
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// get a signal in 50 milliseconds.
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if (diff > 50 * 1000)
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break;
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}
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go_stop_profile();
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return 0;
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}
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