platform_bionic/libc/arch-common/bionic/pthread_atfork.h
Dan Albert 2e2c72d61f Pre-M and GCC compatibility for crtbegin.
We're going to start using the bionic sources for the NDK CRT
objects, so we need to avoid using symbols that weren't around in
early versions of Android. The NDK is currently building the CRT
objects with GCC as well (there were some segfaults that have yet to
be diagnosed), so move `__used` to the GCC compatible location.

Test: treehugger
Bug: None
Change-Id: I1f5c23eafadc2e3bc0b84bc3305f79a04d35c7d8
2018-01-24 16:37:48 -08:00

36 lines
1.3 KiB
C

/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <android/api-level.h>
// __register_atfork wasn't available until android-23. We need to build a
// pre-23 and 23+ version of crtbegin.
#if __ANDROID_API__ >= __ANDROID_API_M__
extern void* __dso_handle;
extern int __register_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void), void* dso);
#ifndef _LIBC
// Libc used to export this in previous versions, therefore it needs
// to remain global for binary compatibility.
__attribute__ ((visibility ("hidden")))
#endif
int pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void)) {
return __register_atfork(prepare, parent, child, &__dso_handle);
}
#endif /* __ANDROID_API__ >= __ANDROID_API_M__ */