RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-27 08:57:47 +00:00
Code Issues Activity Actions

LibC+LibPthread: Implement function forwarding for libpthread

Browse source 
GCC will insert various calls to pthread functions when compiling
C++ code with static initializers, even when the user doesn't link
their program against libpthread explicitly.

This is used to make static initializers thread-safe, e.g. when
building a library that does not itself use thread functionality
and thus does not link against libpthread - but is intended to
be used with other code that does use libpthread explicitly.

This makes these symbols available in libc.
This commit is contained in:
Gunnar Beutner 2021-04-17 18:38:32 +02:00 • committed by Andreas Kling
parent db3fd11646
commit 88cebb05ad
14 changed files with 381 additions and 100 deletions
Download patch file Download diff file Expand all files Collapse all files

49
Userland/Libraries/LibC/bits/pthread_forward.h Normal file
View file

@ -0,0 +1,49 @@
/*
* Copyright (c) 2021, Gunnar Beutner <gunnar@beutner.name>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <LibPthread/pthread.h>
struct PthreadFunctions {
int (*pthread_mutex_trylock)(pthread_mutex_t* mutex);
int (*pthread_mutex_destroy)(pthread_mutex_t*);
int (*pthread_mutexattr_init)(pthread_mutexattr_t*);
int (*pthread_mutexattr_settype)(pthread_mutexattr_t*, int);
int (*pthread_mutexattr_destroy)(pthread_mutexattr_t*);
int (*pthread_once)(pthread_once_t*, void (*)(void));
int (*pthread_cond_broadcast)(pthread_cond_t*);
int (*pthread_cond_init)(pthread_cond_t*, const pthread_condattr_t*);
int (*pthread_cond_signal)(pthread_cond_t*);
int (*pthread_cond_wait)(pthread_cond_t*, pthread_mutex_t*);
int (*pthread_cond_destroy)(pthread_cond_t*);
int (*pthread_cond_timedwait)(pthread_cond_t*, pthread_mutex_t*, const struct timespec*);
};
void __init_pthread_forward(PthreadFunctions);