1// Copyright 2021 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// The C definitions for gprof.go. That file uses //export so
6// it can't put function definitions in the "C" import comment.
7
8#include <stdint.h>
9#include <stdlib.h>
10
11// Functions exported from Go.
12extern void GoSleep();
13
14struct cgoContextArg {
15 uintptr_t context;
16};
17
18void gprofCgoContext(void *arg) {
19 ((struct cgoContextArg*)arg)->context = 1;
20}
21
22void gprofCgoTraceback(void *arg) {
23 // spend some time here so the P is more likely to be retaken.
24 volatile int i;
25 for (i = 0; i < 123456789; i++);
26}
27
28void CallGoSleep() {
29 GoSleep();
30}
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