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go/misc/cgo/test/issue4029.go
Emmanuel Odeke 53fd522c0d all: make copyright headers consistent with one space after period
Follows suit with https://go-review.googlesource.com/#/c/20111.

Generated by running
$ grep -R 'Go Authors.  All' * | cut -d":" -f1 | while read F;do perl -pi -e 's/Go
Authors.  All/Go Authors. All/g' $F;done

The code in cmd/internal/unvendor wasn't changed.

Fixes #15213

Change-Id: I4f235cee0a62ec435f9e8540a1ec08ae03b1a75f
Reviewed-on: https://go-review.googlesource.com/21819
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-05-02 13:43:18 +00:00

69 lines
1.2 KiB
Go

// Copyright 2012 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.
// +build !windows
package cgotest
/*
#include <dlfcn.h>
#cgo linux LDFLAGS: -ldl
extern void call4029(void *arg);
*/
import "C"
import (
"testing"
)
var callbacks int
//export IMPIsOpaque
func IMPIsOpaque() {
callbacks++
}
//export IMPInitWithFrame
func IMPInitWithFrame() {
callbacks++
}
//export IMPDrawRect
func IMPDrawRect() {
callbacks++
}
//export IMPWindowResize
func IMPWindowResize() {
callbacks++
}
func test4029(t *testing.T) {
loadThySelf(t, "IMPWindowResize")
loadThySelf(t, "IMPDrawRect")
loadThySelf(t, "IMPInitWithFrame")
loadThySelf(t, "IMPIsOpaque")
if callbacks != 4 {
t.Errorf("got %d callbacks, expected 4", callbacks)
}
}
func loadThySelf(t *testing.T, symbol string) {
this_process := C.dlopen(nil, C.RTLD_NOW)
if this_process == nil {
t.Error("dlopen:", C.GoString(C.dlerror()))
return
}
defer C.dlclose(this_process)
symbol_address := C.dlsym(this_process, C.CString(symbol))
if symbol_address == nil {
t.Error("dlsym:", C.GoString(C.dlerror()))
return
}
t.Log(symbol, symbol_address)
C.call4029(symbol_address)
}