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authorEric Andersen <andersen@codepoet.org>2001-09-27 05:24:26 +0000
committerEric Andersen <andersen@codepoet.org>2001-09-27 05:24:26 +0000
commit2512c847453c24b928c34beed88902fbb6877b7a (patch)
tree3d327c54c00684b85c435cffa29c5050888c0a69 /libc/sysdeps/linux/i386/bits/libc-lock.h
parente83a36ce9f97ac0f59117b3a62fd2dd8461b1fd5 (diff)
Update to accomodate the header file changes
Diffstat (limited to 'libc/sysdeps/linux/i386/bits/libc-lock.h')
-rw-r--r--libc/sysdeps/linux/i386/bits/libc-lock.h147
1 files changed, 125 insertions, 22 deletions
diff --git a/libc/sysdeps/linux/i386/bits/libc-lock.h b/libc/sysdeps/linux/i386/bits/libc-lock.h
index a14cea1aa..dbd9cc14f 100644
--- a/libc/sysdeps/linux/i386/bits/libc-lock.h
+++ b/libc/sysdeps/linux/i386/bits/libc-lock.h
@@ -1,5 +1,5 @@
/* libc-internal interface for mutex locks. LinuxThreads version.
- Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1996,1997,1998,1999,2000,2001 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
@@ -25,8 +25,10 @@
/* Mutex type. */
#ifdef _LIBC
typedef pthread_mutex_t __libc_lock_t;
+typedef pthread_rwlock_t __libc_rwlock_t;
#else
typedef struct __libc_lock_opaque__ __libc_lock_t;
+typedef struct __libc_rwlock_opaque__ __libc_rwlock_t;
#endif
/* Type for key to thread-specific data. */
@@ -41,15 +43,28 @@ typedef pthread_key_t __libc_key_t;
of libc. */
#define __libc_lock_define(CLASS,NAME) \
CLASS __libc_lock_t NAME;
+#define __libc_rwlock_define(CLASS,NAME) \
+ CLASS __libc_rwlock_t NAME;
/* 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) \
+ 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. (Except on PA-RISC and other odd architectures, where
+ initialized locks must be set to one due to the lack of normal
+ atomic operations.) */
+
+#if __LT_SPINLOCK_INIT == 0
+# define __libc_lock_define_initialized(CLASS,NAME) \
CLASS __libc_lock_t NAME;
+#else
+# define __libc_lock_define_initialized(CLASS,NAME) \
+ CLASS __libc_lock_t NAME = PTHREAD_MUTEX_INITIALIZER;
+#endif
+
+#define __libc_rwlock_define_initialized(CLASS,NAME) \
+ CLASS __libc_rwlock_t NAME = PTHREAD_RWLOCK_INITIALIZER;
/* Define an initialized recursive lock variable NAME with storage
class CLASS. */
@@ -60,6 +75,8 @@ typedef pthread_key_t __libc_key_t;
state. */
#define __libc_lock_init(NAME) \
(__pthread_mutex_init != NULL ? __pthread_mutex_init (&(NAME), NULL) : 0);
+#define __libc_rwlock_init(NAME) \
+ (__pthread_rwlock_init != NULL ? __pthread_rwlock_init (&(NAME), NULL) : 0);
/* Same as last but this time we initialize a recursive mutex. */
#define __libc_lock_init_recursive(NAME) \
@@ -79,6 +96,8 @@ typedef pthread_key_t __libc_key_t;
called on a lock variable before the containing storage is reused. */
#define __libc_lock_fini(NAME) \
(__pthread_mutex_destroy != NULL ? __pthread_mutex_destroy (&(NAME)) : 0);
+#define __libc_rwlock_fini(NAME) \
+ (__pthread_rwlock_destroy != NULL ? __pthread_rwlock_destroy (&(NAME)) : 0);
/* Finalize recursive named lock. */
#define __libc_lock_fini_recursive(NAME) __libc_lock_fini (NAME)
@@ -86,6 +105,10 @@ typedef pthread_key_t __libc_key_t;
/* Lock the named lock variable. */
#define __libc_lock_lock(NAME) \
(__pthread_mutex_lock != NULL ? __pthread_mutex_lock (&(NAME)) : 0);
+#define __libc_rwlock_rdlock(NAME) \
+ (__pthread_rwlock_rdlock != NULL ? __pthread_rwlock_rdlock (&(NAME)) : 0);
+#define __libc_rwlock_wrlock(NAME) \
+ (__pthread_rwlock_wrlock != NULL ? __pthread_rwlock_wrlock (&(NAME)) : 0);
/* Lock the recursive named lock variable. */
#define __libc_lock_lock_recursive(NAME) __libc_lock_lock (NAME)
@@ -93,6 +116,12 @@ typedef pthread_key_t __libc_key_t;
/* Try to lock the named lock variable. */
#define __libc_lock_trylock(NAME) \
(__pthread_mutex_trylock != NULL ? __pthread_mutex_trylock (&(NAME)) : 0)
+#define __libc_rwlock_tryrdlock(NAME) \
+ (__pthread_rwlock_tryrdlock != NULL \
+ ? __pthread_rwlock_tryrdlock (&(NAME)) : 0)
+#define __libc_rwlock_trywrlock(NAME) \
+ (__pthread_rwlock_trywrlock != NULL \
+ ? __pthread_rwlock_trywrlock (&(NAME)) : 0)
/* Try to lock the recursive named lock variable. */
#define __libc_lock_trylock_recursive(NAME) __libc_lock_trylock (NAME)
@@ -100,6 +129,8 @@ typedef pthread_key_t __libc_key_t;
/* Unlock the named lock variable. */
#define __libc_lock_unlock(NAME) \
(__pthread_mutex_unlock != NULL ? __pthread_mutex_unlock (&(NAME)) : 0);
+#define __libc_rwlock_unlock(NAME) \
+ (__pthread_rwlock_unlock != NULL ? __pthread_rwlock_unlock (&(NAME)) : 0);
/* Unlock the recursive named lock variable. */
#define __libc_lock_unlock_recursive(NAME) __libc_lock_unlock (NAME)
@@ -121,9 +152,9 @@ typedef pthread_key_t __libc_key_t;
do { \
if (__pthread_once != NULL) \
__pthread_once (&(ONCE_CONTROL), (INIT_FUNCTION)); \
- else if ((ONCE_CONTROL) == 0) { \
+ else if ((ONCE_CONTROL) == PTHREAD_ONCE_INIT) { \
INIT_FUNCTION (); \
- (ONCE_CONTROL) = 1; \
+ (ONCE_CONTROL) = !PTHREAD_ONCE_INIT; \
} \
} while (0)
@@ -166,27 +197,93 @@ typedef pthread_key_t __libc_key_t;
#define __libc_atfork(PREPARE, PARENT, CHILD) \
(__pthread_atfork != NULL ? __pthread_atfork (PREPARE, PARENT, CHILD) : 0)
+/* Functions that are used by this file and are internal to the GNU C
+ library. */
+
+extern int __pthread_mutex_init (pthread_mutex_t *__mutex,
+ __const pthread_mutexattr_t *__mutex_attr);
+
+extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex);
+
+extern int __pthread_mutex_trylock (pthread_mutex_t *__mutex);
+
+extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
+
+extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
+
+extern int __pthread_mutexattr_init (pthread_mutexattr_t *__attr);
+
+extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *__attr);
+
+extern int __pthread_mutexattr_settype (pthread_mutexattr_t *__attr,
+ int __kind);
+
+#ifdef __USE_UNIX98
+extern int __pthread_rwlock_init (pthread_rwlock_t *__rwlock,
+ __const pthread_rwlockattr_t *__attr);
+
+extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock);
+#endif
+
+extern int __pthread_key_create (pthread_key_t *__key,
+ void (*__destr_function) (void *));
+
+extern int __pthread_setspecific (pthread_key_t __key,
+ __const void *__pointer);
+
+extern void *__pthread_getspecific (pthread_key_t __key);
+
+extern int __pthread_once (pthread_once_t *__once_control,
+ void (*__init_routine) (void));
+
+extern int __pthread_atfork (void (*__prepare) (void),
+ void (*__parent) (void),
+ void (*__child) (void));
+
+
/* Make the pthread functions weak so that we can elide them from
single-threaded processes. */
#ifndef __NO_WEAK_PTHREAD_ALIASES
# ifdef weak_extern
-weak_extern (__pthread_mutex_init)
-weak_extern (__pthread_mutex_destroy)
-weak_extern (__pthread_mutex_lock)
-weak_extern (__pthread_mutex_trylock)
-weak_extern (__pthread_mutex_unlock)
-weak_extern (__pthread_mutexattr_init)
-weak_extern (__pthread_mutexattr_destroy)
-weak_extern (__pthread_mutexattr_settype)
-weak_extern (__pthread_key_create)
-weak_extern (__pthread_setspecific)
-weak_extern (__pthread_getspecific)
-weak_extern (__pthread_once)
+# if _LIBC
+# include <bp-sym.h>
+# else
+# define BP_SYM (sym) sym
+# endif
+weak_extern (BP_SYM (__pthread_mutex_init))
+weak_extern (BP_SYM (__pthread_mutex_destroy))
+weak_extern (BP_SYM (__pthread_mutex_lock))
+weak_extern (BP_SYM (__pthread_mutex_trylock))
+weak_extern (BP_SYM (__pthread_mutex_unlock))
+weak_extern (BP_SYM (__pthread_mutexattr_init))
+weak_extern (BP_SYM (__pthread_mutexattr_destroy))
+weak_extern (BP_SYM (__pthread_mutexattr_settype))
+weak_extern (BP_SYM (__pthread_rwlock_init))
+weak_extern (BP_SYM (__pthread_rwlock_destroy))
+weak_extern (BP_SYM (__pthread_rwlock_rdlock))
+weak_extern (BP_SYM (__pthread_rwlock_tryrdlock))
+weak_extern (BP_SYM (__pthread_rwlock_wrlock))
+weak_extern (BP_SYM (__pthread_rwlock_trywrlock))
+weak_extern (BP_SYM (__pthread_rwlock_unlock))
+weak_extern (BP_SYM (__pthread_key_create))
+weak_extern (BP_SYM (__pthread_setspecific))
+weak_extern (BP_SYM (__pthread_getspecific))
+weak_extern (BP_SYM (__pthread_once))
weak_extern (__pthread_initialize)
weak_extern (__pthread_atfork)
-weak_extern (_pthread_cleanup_push_defer)
-weak_extern (_pthread_cleanup_pop_restore)
+weak_extern (BP_SYM (_pthread_cleanup_push_defer))
+weak_extern (BP_SYM (_pthread_cleanup_pop_restore))
# else
# pragma weak __pthread_mutex_init
# pragma weak __pthread_mutex_destroy
@@ -196,6 +293,12 @@ weak_extern (_pthread_cleanup_pop_restore)
# pragma weak __pthread_mutexattr_init
# pragma weak __pthread_mutexattr_destroy
# pragma weak __pthread_mutexattr_settype
+# pragma weak __pthread_rwlock_destroy
+# pragma weak __pthread_rwlock_rdlock
+# pragma weak __pthread_rwlock_tryrdlock
+# pragma weak __pthread_rwlock_wrlock
+# pragma weak __pthread_rwlock_trywrlock
+# pragma weak __pthread_rwlock_unlock
# pragma weak __pthread_key_create
# pragma weak __pthread_setspecific
# pragma weak __pthread_getspecific