mirror of
https://github.com/golang/go
synced 2024-11-17 10:24:48 -07:00
17360accab
This makes it more convenient for C code to use GoString with string constants. Since Go string values are immutable, the const qualifier is appropriate in C. Change-Id: I5fb3cdce2ce5079f1f0467a1544bb3a1eb27b811 Reviewed-on: https://go-review.googlesource.com/17067 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
91 lines
1.3 KiB
C
91 lines
1.3 KiB
C
// 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 <string.h>
|
|
#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();
|
|
}
|
|
|
|
int
|
|
returnAfterGrow(void)
|
|
{
|
|
extern int goReturnVal(void);
|
|
goReturnVal();
|
|
return 123456;
|
|
}
|
|
|
|
int
|
|
returnAfterGrowFromGo(void)
|
|
{
|
|
extern int goReturnVal(void);
|
|
return goReturnVal();
|
|
}
|
|
|
|
void
|
|
callGoWithString(void)
|
|
{
|
|
extern void goWithString(GoString);
|
|
const char *str = "string passed from C to Go";
|
|
goWithString((GoString){str, strlen(str)});
|
|
}
|