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LibC+LibPthread: Implement function forwarding for libpthread

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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
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Userland/Libraries/LibPthread/pthread.h
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@ -146,6 +146,4 @@ int pthread_rwlockattr_setpshared(pthread_rwlockattr_t*, int);
int pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void));
void __pthread_key_destroy_for_current_thread();
__END_DECLS