root/misc/cgo/test/callback_c.c

DEFINITIONS

1. callback
2. callGoFoo
3. IntoC
4. mysleep
5. mysleep
6. twoSleep
7. callGoStackCheck

// Copyright 2011 The Go Authors.  All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include <sys/types.h>
#include <unistd.h>
#include "_cgo_export.h"

void
callback(void *f)
{
        // use some stack space
        volatile char data[64*1024];

        data[0] = 0;
        goCallback(f);
        data[sizeof(data)-1] = 0;
}

void
callGoFoo(void)
{
        extern void goFoo(void);
        goFoo();
}

void
IntoC(void)
{
        BackIntoGo();
}

#ifdef WIN32
#include <windows.h>
long long
mysleep(int seconds) {
        long long st = GetTickCount();
        sleep(seconds);
        return st;
}
#else
#include <sys/time.h>
long long
mysleep(int seconds) {
        long long st;
        struct timeval tv;
        gettimeofday(&tv, NULL);
        st = tv.tv_sec * 1000 + tv.tv_usec / 1000;
        sleep(seconds);
        return st;
}
#endif

long long
twoSleep(int n)
{
        BackgroundSleep(n);
        return mysleep(n);
}

void
callGoStackCheck(void)
{
        extern void goStackCheck(void);
        goStackCheck();
}