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* sysdeps/pthread/bits/libc-lock.h (__libc_lock_define_initialized):
	Don't use initializer since it is all zeroes.
	(__libc_once_define): Likewise.
This commit is contained in:
Ulrich Drepper 1999-04-28 21:58:40 +00:00
parent 390500b147
commit 89afc233db
2 changed files with 20 additions and 4 deletions
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4
linuxthreads/ChangeLog
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@ -3,6 +3,10 @@
* manager.c (pthread_allocate_stack): Optimize initialization of new
thread descriptor.
* sysdeps/pthread/bits/libc-lock.h (__libc_lock_define_initialized):
Don't use initializer since it is all zeroes.
(__libc_once_define): Likewise.
1999-04-16 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* sysdeps/arm/Implies: Removed since cmpxchg/no-cmpxchg

20
linuxthreads/sysdeps/pthread/bits/libc-lock.h
View File

@ -1,5 +1,5 @@
/* libc-internal interface for mutex locks. LinuxThreads version.
Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -42,9 +42,14 @@ typedef pthread_key_t __libc_key_t;
#define __libc_lock_define(CLASS,NAME) \
CLASS __libc_lock_t NAME;
/* Define an initialized lock variable NAME with storage class CLASS. */
/* Define an initialized lock variable NAME with storage class CLASS.
For the C library we take a deeper look at the initializer. For this
implementation all fields are initialized to zero. Therefore we
don't initialize the variable which allows putting it into the BSS
section. */
#define __libc_lock_define_initialized(CLASS,NAME) \
CLASS __libc_lock_t NAME = PTHREAD_MUTEX_INITIALIZER;
CLASS __libc_lock_t NAME;
/* Define an initialized recursive lock variable NAME with storage
class CLASS. */
@ -101,8 +106,15 @@ typedef pthread_key_t __libc_key_t;
/* Define once control variable. */
#define __libc_once_define(CLASS, NAME) \
#if PTHREAD_ONCE_INIT == 0
/* Special case for static variables where we can avoid the initialization
if it is zero. */
# define __libc_once_define(CLASS, NAME) \
CLASS pthread_once_t NAME
#else
# define __libc_once_define(CLASS, NAME) \
CLASS pthread_once_t NAME = PTHREAD_ONCE_INIT
#endif
/* Call handler iff the first call. */
#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \