mirror of
https://github.com/golang/go
synced 2024-11-19 10:34:46 -07:00
2a8229d96e
The dlopen function returns an opaque handle, and it is possible for it to look like a Go pointer, causing garbage collector and cgo confusion. Fixes #23663 Change-Id: Id080e2bbcee8cfa7ac4a457a927f96949eb913f8 Reviewed-on: https://go-review.googlesource.com/91596 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
30 lines
744 B
C
30 lines
744 B
C
// Copyright 2015 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
|
|
|
|
#include <stdint.h>
|
|
#include <dlfcn.h>
|
|
|
|
// Write our own versions of dlopen/dlsym/dlclose so that we represent
|
|
// the opaque handle as a Go uintptr rather than a Go pointer to avoid
|
|
// garbage collector confusion. See issue 23663.
|
|
|
|
uintptr_t dlopen4029(char* name, int flags) {
|
|
return (uintptr_t)(dlopen(name, flags));
|
|
}
|
|
|
|
uintptr_t dlsym4029(uintptr_t handle, char* name) {
|
|
return (uintptr_t)(dlsym((void*)(handle), name));
|
|
}
|
|
|
|
int dlclose4029(uintptr_t handle) {
|
|
return dlclose((void*)(handle));
|
|
}
|
|
|
|
void call4029(void *arg) {
|
|
void (*fn)(void) = arg;
|
|
fn();
|
|
}
|