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authorWaldemar Brodkorb <wbx@uclibc-ng.org>2016-09-24 02:55:31 +0200
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2016-09-26 20:23:24 +0200
commit29ff9055c80efe77a7130767a9fcb3ab8c67e8ce (patch)
treeb061656c1336d7d73ed5eef59352e3d50d8147a7 /libc/misc
parentb06f85d62c41a4ed108628b1c564203f36c0ab4e (diff)
use a single libc and deduplicate threading code
Similar to musl libc a single libc has many benefits and solves some open issues with uClibc-ng. - no pthread_mutex_* weak symbols exported anymore - applications no longer failing to link when either -lrt or -lpthread are missing for dynamic and static linking mode - smaller C library - slightly better runtime performance
Diffstat (limited to 'libc/misc')
-rw-r--r--libc/misc/internals/__uClibc_main.c45
1 files changed, 0 insertions, 45 deletions
diff --git a/libc/misc/internals/__uClibc_main.c b/libc/misc/internals/__uClibc_main.c
index 9bb81fc83..46e24d891 100644
--- a/libc/misc/internals/__uClibc_main.c
+++ b/libc/misc/internals/__uClibc_main.c
@@ -29,7 +29,6 @@
#include <fcntl.h>
#endif
#ifdef __UCLIBC_HAS_THREADS_NATIVE__
-#include <pthread-functions.h>
#include <not-cancel.h>
#include <atomic.h>
#include <tls.h>
@@ -69,42 +68,6 @@ uintptr_t __stack_chk_guard attribute_relro;
void internal_function _dl_aux_init (ElfW(auxv_t) *av);
-#ifdef __UCLIBC_HAS_THREADS__
-/*
- * uClibc internal locking requires that we have weak aliases
- * for dummy functions in case libpthread.a is not linked in.
- * This needs to be in compilation unit that is pulled always
- * in or linker will disregard these weaks.
- */
-
-static int __pthread_return_0 (pthread_mutex_t *unused) { return 0; }
-weak_alias (__pthread_return_0, __pthread_mutex_lock)
-weak_alias (__pthread_return_0, __pthread_mutex_trylock)
-weak_alias (__pthread_return_0, __pthread_mutex_unlock)
-
-int weak_function
-__pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr)
-{
- return 0;
-}
-
-void weak_function
-_pthread_cleanup_push_defer(struct _pthread_cleanup_buffer *__buffer,
- void (*__routine) (void *), void *__arg)
-{
- __buffer->__routine = __routine;
- __buffer->__arg = __arg;
-}
-
-void weak_function
-_pthread_cleanup_pop_restore(struct _pthread_cleanup_buffer *__buffer,
- int __execute)
-{
- if (__execute)
- __buffer->__routine(__buffer->__arg);
-}
-#endif /* __UCLIBC_HAS_THREADS__ */
-
#endif /* !SHARED */
/* Defeat compiler optimization which assumes function addresses are never NULL */
@@ -492,20 +455,12 @@ void __uClibc_main(int (*main)(int, char **, char **), int argc,
else
{
/* Remove the thread-local data. */
-# ifdef SHARED
- __libc_pthread_functions.ptr__nptl_deallocate_tsd ();
-# else
__nptl_deallocate_tsd ();
-# endif
/* One less thread. Decrement the counter. If it is zero we
terminate the entire process. */
result = 0;
-# ifdef SHARED
- unsigned int *const ptr = __libc_pthread_functions.ptr_nthreads;
-# else
unsigned int *const ptr = &__nptl_nthreads;
-# endif
if (! atomic_decrement_and_test (ptr))
/* Not much left to do but to exit the thread, not the process. */