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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 /REORG.TODO/sysdeps/generic/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 'REORG.TODO/sysdeps/generic/libc-lock.h')
-rw-r--r--REORG.TODO/sysdeps/generic/libc-lock.h140
1 files changed, 140 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/generic/libc-lock.h b/REORG.TODO/sysdeps/generic/libc-lock.h
new file mode 100644
index 0000000000..ed7bdc0393
--- /dev/null
+++ b/REORG.TODO/sysdeps/generic/libc-lock.h
@@ -0,0 +1,140 @@
+/* libc-internal interface for mutex locks.  Stub version.
+   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
+
+
+/* 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)
+#define __libc_lock_define_recursive(CLASS,NAME)
+#define __rtld_lock_define_recursive(CLASS,NAME)
+#define __libc_rwlock_define(CLASS,NAME)
+
+/* Define an initialized lock variable NAME with storage class CLASS.  */
+#define __libc_lock_define_initialized(CLASS,NAME)
+#define __libc_rwlock_define_initialized(CLASS,NAME)
+
+/* Define an initialized recursive lock variable NAME with storage
+   class CLASS.  */
+#define __libc_lock_define_initialized_recursive(CLASS,NAME)
+#define __rtld_lock_define_initialized_recursive(CLASS,NAME)
+
+/* Initialize the named lock variable, leaving it in a consistent, unlocked
+   state.  */
+#define __libc_lock_init(NAME)
+#define __rtld_lock_initialize(NAME)
+#define __libc_rwlock_init(NAME)
+
+/* Same as last but this time we initialize a recursive mutex.  */
+#define __libc_lock_init_recursive(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)
+#define __libc_rwlock_fini(NAME)
+
+/* Finalize recursive named lock.  */
+#define __libc_lock_fini_recursive(NAME)
+
+/* Lock the named lock variable.  */
+#define __libc_lock_lock(NAME)
+#define __libc_rwlock_rdlock(NAME)
+#define __libc_rwlock_wrlock(NAME)
+
+/* Lock the recursive named lock variable.  */
+#define __libc_lock_lock_recursive(NAME)
+#define __rtld_lock_lock_recursive(NAME)
+
+/* Try to lock the named lock variable.  */
+#define __libc_lock_trylock(NAME) 0
+#define __libc_rwlock_tryrdlock(NAME) 0
+#define __libc_rwlock_trywrlock(NAME) 0
+
+/* Try to lock the recursive named lock variable.  */
+#define __libc_lock_trylock_recursive(NAME) 0
+
+/* Unlock the named lock variable.  */
+#define __libc_lock_unlock(NAME)
+#define __libc_rwlock_unlock(NAME)
+
+/* Unlock the recursive named lock variable.  */
+#define __libc_lock_unlock_recursive(NAME)
+#define __rtld_lock_unlock_recursive(NAME)
+
+
+/* Define once control variable.  */
+#define __libc_once_define(CLASS, NAME) CLASS int NAME = 0
+
+/* Call handler iff the first call.  */
+#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \
+  do {									      \
+    if ((ONCE_CONTROL) == 0) {						      \
+      INIT_FUNCTION ();							      \
+      (ONCE_CONTROL) = 1;						      \
+    }									      \
+  } while (0)
+
+/* Get once control variable.  */
+#define __libc_once_get(ONCE_CONTROL) \
+  ((ONCE_CONTROL) == 1)
+
+/* 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)
+
+/* We need portable names for some of the functions.  */
+#define __libc_mutex_unlock
+
+/* Type for key of thread specific data.  */
+typedef int __libc_key_t;
+
+/* Create key for thread specific data.  */
+#define __libc_key_create(KEY,DEST)	((void) (KEY), (void) (DEST), -1)
+
+/* Set thread-specific data associated with KEY to VAL.  */
+#define __libc_setspecific(KEY,VAL)	((void) (KEY), (void) (VAL))
+
+/* Get thread-specific data associated with KEY.  */
+#define __libc_getspecific(KEY)		((void) (KEY), (void *) 0)
+
+#endif	/* libc-lock.h */