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authorZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
committerZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
commit5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch)
tree4470480d904b65cf14ca524f96f79eca818c3eaf /sysdeps/mach/hurd/libc-lock.h
parent199fc19d3aaaf57944ef036e15904febe877fc93 (diff)
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Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'sysdeps/mach/hurd/libc-lock.h')
-rw-r--r--sysdeps/mach/hurd/libc-lock.h216
1 files changed, 0 insertions, 216 deletions
diff --git a/sysdeps/mach/hurd/libc-lock.h b/sysdeps/mach/hurd/libc-lock.h
deleted file mode 100644
index 18496588b3..0000000000
--- a/sysdeps/mach/hurd/libc-lock.h
+++ /dev/null
@@ -1,216 +0,0 @@
-/* libc-internal interface for mutex locks. Hurd version using Mach cthreads.
- Copyright (C) 1996-2017 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
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#ifndef _LIBC_LOCK_H
-#define _LIBC_LOCK_H 1
-
-#if (_LIBC - 0) || (_CTHREADS_ - 0)
-#include <cthreads.h>
-#include <hurd/threadvar.h>
-
-/* The locking here is very inexpensive, even for inlining. */
-#define _IO_lock_inexpensive 1
-
-typedef struct mutex __libc_lock_t;
-typedef struct
-{
- struct mutex mutex;
- void *owner;
- int count;
-} __libc_lock_recursive_t;
-typedef __libc_lock_recursive_t __rtld_lock_recursive_t;
-
-#define __libc_lock_owner_self() ((void *) __hurd_threadvar_location (0))
-
-#else
-typedef struct __libc_lock_opaque__ __libc_lock_t;
-typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
-#endif
-
-/* Define a lock variable NAME with storage class CLASS. The lock must be
- initialized with __libc_lock_init before it can be used (or define it
- with __libc_lock_define_initialized, below). Use `extern' for CLASS to
- declare a lock defined in another module. In public structure
- definitions you must use a pointer to the lock structure (i.e., NAME
- begins with a `*'), because its storage size will not be known outside
- of libc. */
-#define __libc_lock_define(CLASS,NAME) \
- CLASS __libc_lock_t NAME;
-
-/* Define an initialized lock variable NAME with storage class CLASS. */
-#define _LIBC_LOCK_INITIALIZER MUTEX_INITIALIZER
-#define __libc_lock_define_initialized(CLASS,NAME) \
- CLASS __libc_lock_t NAME = _LIBC_LOCK_INITIALIZER;
-
-/* Initialize the named lock variable, leaving it in a consistent, unlocked
- state. */
-#define __libc_lock_init(NAME) __mutex_init (&(NAME))
-
-/* Finalize the named lock variable, which must be locked. It cannot be
- used again until __libc_lock_init is called again on it. This must be
- called on a lock variable before the containing storage is reused. */
-#define __libc_lock_fini(NAME) __mutex_unlock (&(NAME))
-#define __libc_lock_fini_recursive(NAME) __mutex_unlock (&(NAME).mutex)
-#define __rtld_lock_fini_recursive(NAME) __mutex_unlock (&(NAME).mutex)
-
-
-/* Lock the named lock variable. */
-#define __libc_lock_lock(NAME) __mutex_lock (&(NAME))
-
-/* Lock the named lock variable. */
-#define __libc_lock_trylock(NAME) (!__mutex_trylock (&(NAME)))
-
-/* Unlock the named lock variable. */
-#define __libc_lock_unlock(NAME) __mutex_unlock (&(NAME))
-
-
-#define __libc_lock_define_recursive(CLASS,NAME) \
- CLASS __libc_lock_recursive_t NAME;
-#define _LIBC_LOCK_RECURSIVE_INITIALIZER { MUTEX_INITIALIZER, 0, 0 }
-#define __libc_lock_define_initialized_recursive(CLASS,NAME) \
- CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER;
-
-#define __rtld_lock_define_recursive(CLASS,NAME) \
- __libc_lock_define_recursive (CLASS, NAME)
-#define _RTLD_LOCK_RECURSIVE_INITIALIZER \
- _LIBC_LOCK_RECURSIVE_INITIALIZER
-#define __rtld_lock_define_initialized_recursive(CLASS,NAME) \
- __libc_lock_define_initialized_recursive (CLASS, NAME)
-
-#define __libc_lock_init_recursive(NAME) \
- ({ __libc_lock_recursive_t *const __lock = &(NAME); \
- __lock->owner = 0; mutex_init (&__lock->mutex); })
-
-#define __libc_lock_trylock_recursive(NAME) \
- ({ __libc_lock_recursive_t *const __lock = &(NAME); \
- void *__self = __libc_lock_owner_self (); \
- __mutex_trylock (&__lock->mutex) \
- ? (__lock->owner = __self, __lock->count = 1, 0) \
- : __lock->owner == __self ? (++__lock->count, 0) : 1; })
-
-#define __libc_lock_lock_recursive(NAME) \
- ({ __libc_lock_recursive_t *const __lock = &(NAME); \
- void *__self = __libc_lock_owner_self (); \
- if (__mutex_trylock (&__lock->mutex) \
- || (__lock->owner != __self \
- && (__mutex_lock (&__lock->mutex), 1))) \
- __lock->owner = __self, __lock->count = 1; \
- else \
- ++__lock->count; \
- })
-#define __libc_lock_unlock_recursive(NAME) \
- ({ __libc_lock_recursive_t *const __lock = &(NAME); \
- if (--__lock->count == 0) \
- { \
- __lock->owner = 0; \
- __mutex_unlock (&__lock->mutex); \
- } \
- })
-
-
-#define __rtld_lock_initialize(NAME) \
- (void) ((NAME) = (__rtld_lock_recursive_t) _RTLD_LOCK_RECURSIVE_INITIALIZER)
-#define __rtld_lock_trylock_recursive(NAME) \
- __libc_lock_trylock_recursive (NAME)
-#define __rtld_lock_lock_recursive(NAME) \
- __libc_lock_lock_recursive(NAME)
-#define __rtld_lock_unlock_recursive(NAME) \
- __libc_lock_unlock_recursive (NAME)
-
-
-/* XXX for now */
-#define __libc_rwlock_define __libc_lock_define
-#define __libc_rwlock_define_initialized __libc_lock_define_initialized
-#define __libc_rwlock_init __libc_lock_init
-#define __libc_rwlock_fini __libc_lock_fini
-#define __libc_rwlock_rdlock __libc_lock_lock
-#define __libc_rwlock_wrlock __libc_lock_lock
-#define __libc_rwlock_tryrdlock __libc_lock_trylock
-#define __libc_rwlock_trywrlock __libc_lock_trylock
-#define __libc_rwlock_unlock __libc_lock_unlock
-
-
-/* Start a critical region with a cleanup function */
-#define __libc_cleanup_region_start(DOIT, FCT, ARG) \
-{ \
- typeof (***(FCT)) *__save_FCT = (DOIT) ? (FCT) : 0; \
- typeof (ARG) __save_ARG = ARG; \
- /* close brace is in __libc_cleanup_region_end below. */
-
-/* End a critical region started with __libc_cleanup_region_start. */
-#define __libc_cleanup_region_end(DOIT) \
- if ((DOIT) && __save_FCT != 0) \
- (*__save_FCT)(__save_ARG); \
-}
-
-/* Sometimes we have to exit the block in the middle. */
-#define __libc_cleanup_end(DOIT) \
- if ((DOIT) && __save_FCT != 0) \
- (*__save_FCT)(__save_ARG); \
-
-#define __libc_cleanup_push(fct, arg) __libc_cleanup_region_start (1, fct, arg)
-#define __libc_cleanup_pop(execute) __libc_cleanup_region_end (execute)
-
-#if (_CTHREADS_ - 0)
-
-/* Use mutexes as once control variables. */
-
-struct __libc_once
- {
- __libc_lock_t lock;
- int done;
- };
-
-#define __libc_once_define(CLASS,NAME) \
- CLASS struct __libc_once NAME = { MUTEX_INITIALIZER, 0 }
-
-/* Call handler iff the first call. */
-#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \
- do { \
- __libc_lock_lock (ONCE_CONTROL.lock); \
- if (!ONCE_CONTROL.done) \
- (INIT_FUNCTION) (); \
- ONCE_CONTROL.done = 1; \
- __libc_lock_unlock (ONCE_CONTROL.lock); \
- } while (0)
-
-/* Get once control variable. */
-#define __libc_once_get(ONCE_CONTROL) ((ONCE_CONTROL).done != 0)
-
-#ifdef _LIBC
-/* We need portable names for some functions. E.g., when they are
- used as argument to __libc_cleanup_region_start. */
-#define __libc_mutex_unlock __mutex_unlock
-#endif
-
-/* Type for key of thread specific data. */
-typedef cthread_key_t __libc_key_t;
-
-#define __libc_key_create(KEY,DEST) cthread_keycreate (KEY)
-#define __libc_setspecific(KEY,VAL) cthread_setspecific (KEY, VAL)
-void *__libc_getspecific (__libc_key_t key);
-
-#endif /* _CTHREADS_ */
-
-/* Hide the definitions which are only supposed to be used inside libc in
- a separate file. This file is not present in the installation! */
-#ifdef _LIBC
-# include <libc-lockP.h>
-#endif
-
-#endif /* libc-lock.h */