mirror of
https://github.com/golang/go
synced 2024-11-25 00:37:57 -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.
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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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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "_cgo_export.h"
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void
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callback(void *f)
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{
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// use some stack space
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volatile char data[64*1024];
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data[0] = 0;
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goCallback(f);
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data[sizeof(data)-1] = 0;
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}
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void
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callGoFoo(void)
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{
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extern void goFoo(void);
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goFoo();
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}
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void
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IntoC(void)
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{
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BackIntoGo();
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}
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#ifdef WIN32
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#include <windows.h>
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long long
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mysleep(int seconds) {
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long long st = GetTickCount();
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sleep(seconds);
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return st;
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}
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#else
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#include <sys/time.h>
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long long
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mysleep(int seconds) {
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long long st;
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struct timeval tv;
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gettimeofday(&tv, NULL);
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st = tv.tv_sec * 1000 + tv.tv_usec / 1000;
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sleep(seconds);
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return st;
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}
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#endif
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long long
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twoSleep(int n)
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{
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BackgroundSleep(n);
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return mysleep(n);
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}
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void
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callGoStackCheck(void)
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{
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extern void goStackCheck(void);
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goStackCheck();
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}
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int
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returnAfterGrow(void)
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{
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extern int goReturnVal(void);
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goReturnVal();
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return 123456;
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}
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int
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returnAfterGrowFromGo(void)
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{
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extern int goReturnVal(void);
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return goReturnVal();
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}
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void
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callGoWithString(void)
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{
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extern void goWithString(GoString);
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const char *str = "string passed from C to Go";
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goWithString((GoString){str, strlen(str)});
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}
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