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-rw-r--r--lib/glthread/lock.h565
1 files changed, 181 insertions, 384 deletions
diff --git a/lib/glthread/lock.h b/lib/glthread/lock.h
index 2d8d5ab..47eed8f 100644
--- a/lib/glthread/lock.h
+++ b/lib/glthread/lock.h
@@ -1,31 +1,21 @@
/* Locking in multithreaded situations.
- Copyright (C) 2005-2018 Free Software Foundation, Inc.
+ Copyright (C) 2005-2022 Free Software Foundation, Inc.
- This program is free software: you can redistribute it and/or
- modify it under the terms of either:
+ This file 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 Lesser General Public License as published by the Free
- Software Foundation; either version 3 of the License, or (at your
- option) any later version.
-
- or
-
- * the GNU General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your
- option) any later version.
-
- or both in parallel, as here.
- This program is distributed in the hope that it will be useful,
+ This file 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 General Public License for more details.
+ GNU Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, see <https://www.gnu.org/licenses/>. */
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2005.
- Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-solaris.h,
- gthr-win32.h. */
+ Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-win32.h. */
/* This file contains locking primitives for use with a given thread library.
It does not contain primitives for creating threads or for other
@@ -90,6 +80,127 @@
#include <errno.h>
#include <stdlib.h>
+#if !defined c11_threads_in_use
+# if HAVE_THREADS_H && USE_POSIX_THREADS_FROM_LIBC
+# define c11_threads_in_use() 1
+# elif HAVE_THREADS_H && USE_POSIX_THREADS_WEAK
+# include <threads.h>
+# pragma weak thrd_exit
+# define c11_threads_in_use() (thrd_exit != NULL)
+# else
+# define c11_threads_in_use() 0
+# endif
+#endif
+
+/* ========================================================================= */
+
+#if USE_ISOC_THREADS || USE_ISOC_AND_POSIX_THREADS
+
+/* Use the ISO C threads library. */
+
+# include <threads.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+/* -------------------------- gl_lock_t datatype -------------------------- */
+
+typedef struct
+ {
+ int volatile init_needed;
+ once_flag init_once;
+ void (*init_func) (void);
+ mtx_t mutex;
+ }
+ gl_lock_t;
+# define gl_lock_define(STORAGECLASS, NAME) \
+ STORAGECLASS gl_lock_t NAME;
+# define gl_lock_define_initialized(STORAGECLASS, NAME) \
+ static void _atomic_init_##NAME (void); \
+ STORAGECLASS gl_lock_t NAME = \
+ { 1, ONCE_FLAG_INIT, _atomic_init_##NAME }; \
+ static void _atomic_init_##NAME (void) \
+ { \
+ if (glthread_lock_init (&(NAME))) \
+ abort (); \
+ }
+extern int glthread_lock_init (gl_lock_t *lock);
+extern int glthread_lock_lock (gl_lock_t *lock);
+extern int glthread_lock_unlock (gl_lock_t *lock);
+extern int glthread_lock_destroy (gl_lock_t *lock);
+
+/* ------------------------- gl_rwlock_t datatype ------------------------- */
+
+typedef struct
+ {
+ int volatile init_needed;
+ once_flag init_once;
+ void (*init_func) (void);
+ mtx_t lock; /* protects the remaining fields */
+ cnd_t waiting_readers; /* waiting readers */
+ cnd_t waiting_writers; /* waiting writers */
+ unsigned int waiting_writers_count; /* number of waiting writers */
+ int runcount; /* number of readers running, or -1 when a writer runs */
+ }
+ gl_rwlock_t;
+# define gl_rwlock_define(STORAGECLASS, NAME) \
+ STORAGECLASS gl_rwlock_t NAME;
+# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
+ static void _atomic_init_##NAME (void); \
+ STORAGECLASS gl_rwlock_t NAME = \
+ { 1, ONCE_FLAG_INIT, _atomic_init_##NAME }; \
+ static void _atomic_init_##NAME (void) \
+ { \
+ if (glthread_rwlock_init (&(NAME))) \
+ abort (); \
+ }
+extern int glthread_rwlock_init (gl_rwlock_t *lock);
+extern int glthread_rwlock_rdlock (gl_rwlock_t *lock);
+extern int glthread_rwlock_wrlock (gl_rwlock_t *lock);
+extern int glthread_rwlock_unlock (gl_rwlock_t *lock);
+extern int glthread_rwlock_destroy (gl_rwlock_t *lock);
+
+/* --------------------- gl_recursive_lock_t datatype --------------------- */
+
+typedef struct
+ {
+ int volatile init_needed;
+ once_flag init_once;
+ void (*init_func) (void);
+ mtx_t mutex;
+ }
+ gl_recursive_lock_t;
+# define gl_recursive_lock_define(STORAGECLASS, NAME) \
+ STORAGECLASS gl_recursive_lock_t NAME;
+# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
+ static void _atomic_init_##NAME (void); \
+ STORAGECLASS gl_recursive_lock_t NAME = \
+ { 1, ONCE_FLAG_INIT, _atomic_init_##NAME }; \
+ static void _atomic_init_##NAME (void) \
+ { \
+ if (glthread_recursive_lock_init (&(NAME))) \
+ abort (); \
+ }
+extern int glthread_recursive_lock_init (gl_recursive_lock_t *lock);
+extern int glthread_recursive_lock_lock (gl_recursive_lock_t *lock);
+extern int glthread_recursive_lock_unlock (gl_recursive_lock_t *lock);
+extern int glthread_recursive_lock_destroy (gl_recursive_lock_t *lock);
+
+/* -------------------------- gl_once_t datatype -------------------------- */
+
+typedef once_flag gl_once_t;
+# define gl_once_define(STORAGECLASS, NAME) \
+ STORAGECLASS once_flag NAME = ONCE_FLAG_INIT;
+# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
+ (call_once (ONCE_CONTROL, INITFUNCTION), 0)
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
/* ========================================================================= */
#if USE_POSIX_THREADS
@@ -165,7 +276,8 @@ extern int glthread_in_use (void);
pthread_rwlockattr_init
*/
# pragma weak pthread_mutexattr_gettype
-# define pthread_in_use() (pthread_mutexattr_gettype != NULL)
+# define pthread_in_use() \
+ (pthread_mutexattr_gettype != NULL || c11_threads_in_use ())
# endif
# else
@@ -198,7 +310,7 @@ typedef pthread_mutex_t gl_lock_t;
# if HAVE_PTHREAD_RWLOCK && (HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER || (defined PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP && (__GNU_LIBRARY__ > 1)))
-# ifdef PTHREAD_RWLOCK_INITIALIZER
+# if defined PTHREAD_RWLOCK_INITIALIZER || defined PTHREAD_RWLOCK_INITIALIZER_NP
typedef pthread_rwlock_t gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME) \
@@ -206,8 +318,13 @@ typedef pthread_rwlock_t gl_rwlock_t;
# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS pthread_rwlock_t NAME = gl_rwlock_initializer;
# if HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER
-# define gl_rwlock_initializer \
- PTHREAD_RWLOCK_INITIALIZER
+# if defined PTHREAD_RWLOCK_INITIALIZER
+# define gl_rwlock_initializer \
+ PTHREAD_RWLOCK_INITIALIZER
+# else
+# define gl_rwlock_initializer \
+ PTHREAD_RWLOCK_INITIALIZER_NP
+# endif
# define glthread_rwlock_init(LOCK) \
(pthread_in_use () ? pthread_rwlock_init (LOCK, NULL) : 0)
# else /* glibc with bug https://sourceware.org/bugzilla/show_bug.cgi?id=13701 */
@@ -390,287 +507,20 @@ extern int glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *l
typedef pthread_once_t gl_once_t;
# define gl_once_define(STORAGECLASS, NAME) \
STORAGECLASS pthread_once_t NAME = PTHREAD_ONCE_INIT;
-# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
- (pthread_in_use () \
- ? pthread_once (ONCE_CONTROL, INITFUNCTION) \
- : (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
-extern int glthread_once_singlethreaded (pthread_once_t *once_control);
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_PTH_THREADS
-
-/* Use the GNU Pth threads library. */
-
-# include <pth.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-# if USE_PTH_THREADS_WEAK
-
-/* Use weak references to the GNU Pth threads library. */
-
-# pragma weak pth_mutex_init
-# pragma weak pth_mutex_acquire
-# pragma weak pth_mutex_release
-# pragma weak pth_rwlock_init
-# pragma weak pth_rwlock_acquire
-# pragma weak pth_rwlock_release
-# pragma weak pth_once
-
-# pragma weak pth_cancel
-# define pth_in_use() (pth_cancel != NULL)
-
-# else
-
-# define pth_in_use() 1
-
-# endif
-
-/* -------------------------- gl_lock_t datatype -------------------------- */
-
-typedef pth_mutex_t gl_lock_t;
-# define gl_lock_define(STORAGECLASS, NAME) \
- STORAGECLASS pth_mutex_t NAME;
-# define gl_lock_define_initialized(STORAGECLASS, NAME) \
- STORAGECLASS pth_mutex_t NAME = gl_lock_initializer;
-# define gl_lock_initializer \
- PTH_MUTEX_INIT
-# define glthread_lock_init(LOCK) \
- (pth_in_use () && !pth_mutex_init (LOCK) ? errno : 0)
-# define glthread_lock_lock(LOCK) \
- (pth_in_use () && !pth_mutex_acquire (LOCK, 0, NULL) ? errno : 0)
-# define glthread_lock_unlock(LOCK) \
- (pth_in_use () && !pth_mutex_release (LOCK) ? errno : 0)
-# define glthread_lock_destroy(LOCK) \
- ((void)(LOCK), 0)
-
-/* ------------------------- gl_rwlock_t datatype ------------------------- */
-
-/* Pth pth_rwlock_acquire always prefers readers. No autoconf test so far. */
-# if HAVE_PTH_RWLOCK_ACQUIRE_PREFER_WRITER
-
-typedef pth_rwlock_t gl_rwlock_t;
-# define gl_rwlock_define(STORAGECLASS, NAME) \
- STORAGECLASS pth_rwlock_t NAME;
-# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
- STORAGECLASS pth_rwlock_t NAME = gl_rwlock_initializer;
-# define gl_rwlock_initializer \
- PTH_RWLOCK_INIT
-# define glthread_rwlock_init(LOCK) \
- (pth_in_use () && !pth_rwlock_init (LOCK) ? errno : 0)
-# define glthread_rwlock_rdlock(LOCK) \
- (pth_in_use () && !pth_rwlock_acquire (LOCK, PTH_RWLOCK_RD, 0, NULL) ? errno : 0)
-# define glthread_rwlock_wrlock(LOCK) \
- (pth_in_use () && !pth_rwlock_acquire (LOCK, PTH_RWLOCK_RW, 0, NULL) ? errno : 0)
-# define glthread_rwlock_unlock(LOCK) \
- (pth_in_use () && !pth_rwlock_release (LOCK) ? errno : 0)
-# define glthread_rwlock_destroy(LOCK) \
- ((void)(LOCK), 0)
-
-# else
-
-typedef struct
- {
- int initialized;
- pth_mutex_t lock; /* protects the remaining fields */
- pth_cond_t waiting_readers; /* waiting readers */
- pth_cond_t waiting_writers; /* waiting writers */
- unsigned int waiting_writers_count; /* number of waiting writers */
- int runcount; /* number of readers running, or -1 when a writer runs */
- }
- gl_rwlock_t;
-# define gl_rwlock_define(STORAGECLASS, NAME) \
- STORAGECLASS gl_rwlock_t NAME;
-# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
- STORAGECLASS gl_rwlock_t NAME = gl_rwlock_initializer;
-# define gl_rwlock_initializer \
- { 0 }
-# define glthread_rwlock_init(LOCK) \
- (pth_in_use () ? glthread_rwlock_init_multithreaded (LOCK) : 0)
-# define glthread_rwlock_rdlock(LOCK) \
- (pth_in_use () ? glthread_rwlock_rdlock_multithreaded (LOCK) : 0)
-# define glthread_rwlock_wrlock(LOCK) \
- (pth_in_use () ? glthread_rwlock_wrlock_multithreaded (LOCK) : 0)
-# define glthread_rwlock_unlock(LOCK) \
- (pth_in_use () ? glthread_rwlock_unlock_multithreaded (LOCK) : 0)
-# define glthread_rwlock_destroy(LOCK) \
- (pth_in_use () ? glthread_rwlock_destroy_multithreaded (LOCK) : 0)
-extern int glthread_rwlock_init_multithreaded (gl_rwlock_t *lock);
-extern int glthread_rwlock_rdlock_multithreaded (gl_rwlock_t *lock);
-extern int glthread_rwlock_wrlock_multithreaded (gl_rwlock_t *lock);
-extern int glthread_rwlock_unlock_multithreaded (gl_rwlock_t *lock);
-extern int glthread_rwlock_destroy_multithreaded (gl_rwlock_t *lock);
-
-# endif
-
-/* --------------------- gl_recursive_lock_t datatype --------------------- */
-
-/* In Pth, mutexes are recursive by default. */
-typedef pth_mutex_t gl_recursive_lock_t;
-# define gl_recursive_lock_define(STORAGECLASS, NAME) \
- STORAGECLASS pth_mutex_t NAME;
-# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
- STORAGECLASS pth_mutex_t NAME = gl_recursive_lock_initializer;
-# define gl_recursive_lock_initializer \
- PTH_MUTEX_INIT
-# define glthread_recursive_lock_init(LOCK) \
- (pth_in_use () && !pth_mutex_init (LOCK) ? errno : 0)
-# define glthread_recursive_lock_lock(LOCK) \
- (pth_in_use () && !pth_mutex_acquire (LOCK, 0, NULL) ? errno : 0)
-# define glthread_recursive_lock_unlock(LOCK) \
- (pth_in_use () && !pth_mutex_release (LOCK) ? errno : 0)
-# define glthread_recursive_lock_destroy(LOCK) \
- ((void)(LOCK), 0)
-
-/* -------------------------- gl_once_t datatype -------------------------- */
-
-typedef pth_once_t gl_once_t;
-# define gl_once_define(STORAGECLASS, NAME) \
- STORAGECLASS pth_once_t NAME = PTH_ONCE_INIT;
-# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
- (pth_in_use () \
- ? glthread_once_multithreaded (ONCE_CONTROL, INITFUNCTION) \
- : (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
-extern int glthread_once_multithreaded (pth_once_t *once_control, void (*initfunction) (void));
-extern int glthread_once_singlethreaded (pth_once_t *once_control);
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_SOLARIS_THREADS
-
-/* Use the old Solaris threads library. */
-
-# include <thread.h>
-# include <synch.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-# if USE_SOLARIS_THREADS_WEAK
-
-/* Use weak references to the old Solaris threads library. */
-
-# pragma weak mutex_init
-# pragma weak mutex_lock
-# pragma weak mutex_unlock
-# pragma weak mutex_destroy
-# pragma weak rwlock_init
-# pragma weak rw_rdlock
-# pragma weak rw_wrlock
-# pragma weak rw_unlock
-# pragma weak rwlock_destroy
-# pragma weak thr_self
-
-# pragma weak thr_suspend
-# define thread_in_use() (thr_suspend != NULL)
-
+# if PTHREAD_IN_USE_DETECTION_HARD || USE_POSIX_THREADS_WEAK
+# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
+ (pthread_in_use () \
+ ? pthread_once (ONCE_CONTROL, INITFUNCTION) \
+ : (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
# else
-
-# define thread_in_use() 1
-
+# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
+ (pthread_in_use () \
+ ? glthread_once_multithreaded (ONCE_CONTROL, INITFUNCTION) \
+ : (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
+extern int glthread_once_multithreaded (pthread_once_t *once_control,
+ void (*init_function) (void));
# endif
-
-/* -------------------------- gl_lock_t datatype -------------------------- */
-
-typedef mutex_t gl_lock_t;
-# define gl_lock_define(STORAGECLASS, NAME) \
- STORAGECLASS mutex_t NAME;
-# define gl_lock_define_initialized(STORAGECLASS, NAME) \
- STORAGECLASS mutex_t NAME = gl_lock_initializer;
-# define gl_lock_initializer \
- DEFAULTMUTEX
-# define glthread_lock_init(LOCK) \
- (thread_in_use () ? mutex_init (LOCK, USYNC_THREAD, NULL) : 0)
-# define glthread_lock_lock(LOCK) \
- (thread_in_use () ? mutex_lock (LOCK) : 0)
-# define glthread_lock_unlock(LOCK) \
- (thread_in_use () ? mutex_unlock (LOCK) : 0)
-# define glthread_lock_destroy(LOCK) \
- (thread_in_use () ? mutex_destroy (LOCK) : 0)
-
-/* ------------------------- gl_rwlock_t datatype ------------------------- */
-
-typedef rwlock_t gl_rwlock_t;
-# define gl_rwlock_define(STORAGECLASS, NAME) \
- STORAGECLASS rwlock_t NAME;
-# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
- STORAGECLASS rwlock_t NAME = gl_rwlock_initializer;
-# define gl_rwlock_initializer \
- DEFAULTRWLOCK
-# define glthread_rwlock_init(LOCK) \
- (thread_in_use () ? rwlock_init (LOCK, USYNC_THREAD, NULL) : 0)
-# define glthread_rwlock_rdlock(LOCK) \
- (thread_in_use () ? rw_rdlock (LOCK) : 0)
-# define glthread_rwlock_wrlock(LOCK) \
- (thread_in_use () ? rw_wrlock (LOCK) : 0)
-# define glthread_rwlock_unlock(LOCK) \
- (thread_in_use () ? rw_unlock (LOCK) : 0)
-# define glthread_rwlock_destroy(LOCK) \
- (thread_in_use () ? rwlock_destroy (LOCK) : 0)
-
-/* --------------------- gl_recursive_lock_t datatype --------------------- */
-
-/* Old Solaris threads did not have recursive locks.
- We have to implement them ourselves. */
-
-typedef struct
- {
- mutex_t mutex;
- thread_t owner;
- unsigned long depth;
- }
- gl_recursive_lock_t;
-# define gl_recursive_lock_define(STORAGECLASS, NAME) \
- STORAGECLASS gl_recursive_lock_t NAME;
-# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
- STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
-# define gl_recursive_lock_initializer \
- { DEFAULTMUTEX, (thread_t) 0, 0 }
-# define glthread_recursive_lock_init(LOCK) \
- (thread_in_use () ? glthread_recursive_lock_init_multithreaded (LOCK) : 0)
-# define glthread_recursive_lock_lock(LOCK) \
- (thread_in_use () ? glthread_recursive_lock_lock_multithreaded (LOCK) : 0)
-# define glthread_recursive_lock_unlock(LOCK) \
- (thread_in_use () ? glthread_recursive_lock_unlock_multithreaded (LOCK) : 0)
-# define glthread_recursive_lock_destroy(LOCK) \
- (thread_in_use () ? glthread_recursive_lock_destroy_multithreaded (LOCK) : 0)
-extern int glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_lock_multithreaded (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_unlock_multithreaded (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *lock);
-
-/* -------------------------- gl_once_t datatype -------------------------- */
-
-typedef struct
- {
- volatile int inited;
- mutex_t mutex;
- }
- gl_once_t;
-# define gl_once_define(STORAGECLASS, NAME) \
- STORAGECLASS gl_once_t NAME = { 0, DEFAULTMUTEX };
-# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
- (thread_in_use () \
- ? glthread_once_multithreaded (ONCE_CONTROL, INITFUNCTION) \
- : (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
-extern int glthread_once_multithreaded (gl_once_t *once_control, void (*initfunction) (void));
-extern int glthread_once_singlethreaded (gl_once_t *once_control);
+extern int glthread_once_singlethreaded (pthread_once_t *once_control);
# ifdef __cplusplus
}
@@ -685,6 +535,11 @@ extern int glthread_once_singlethreaded (gl_once_t *once_control);
# define WIN32_LEAN_AND_MEAN /* avoid including junk */
# include <windows.h>
+# include "windows-mutex.h"
+# include "windows-rwlock.h"
+# include "windows-recmutex.h"
+# include "windows-once.h"
+
# ifdef __cplusplus
extern "C" {
# endif
@@ -700,127 +555,69 @@ extern "C" {
/* There is no way to statically initialize a CRITICAL_SECTION. It needs
to be done lazily, once only. For this we need spinlocks. */
-typedef struct { volatile int done; volatile long started; } gl_spinlock_t;
-
/* -------------------------- gl_lock_t datatype -------------------------- */
-typedef struct
- {
- gl_spinlock_t guard; /* protects the initialization */
- CRITICAL_SECTION lock;
- }
- gl_lock_t;
+typedef glwthread_mutex_t gl_lock_t;
# define gl_lock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_lock_t NAME;
# define gl_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_lock_t NAME = gl_lock_initializer;
# define gl_lock_initializer \
- { { 0, -1 } }
+ GLWTHREAD_MUTEX_INIT
# define glthread_lock_init(LOCK) \
- (glthread_lock_init_func (LOCK), 0)
+ (glwthread_mutex_init (LOCK), 0)
# define glthread_lock_lock(LOCK) \
- glthread_lock_lock_func (LOCK)
+ glwthread_mutex_lock (LOCK)
# define glthread_lock_unlock(LOCK) \
- glthread_lock_unlock_func (LOCK)
+ glwthread_mutex_unlock (LOCK)
# define glthread_lock_destroy(LOCK) \
- glthread_lock_destroy_func (LOCK)
-extern void glthread_lock_init_func (gl_lock_t *lock);
-extern int glthread_lock_lock_func (gl_lock_t *lock);
-extern int glthread_lock_unlock_func (gl_lock_t *lock);
-extern int glthread_lock_destroy_func (gl_lock_t *lock);
+ glwthread_mutex_destroy (LOCK)
/* ------------------------- gl_rwlock_t datatype ------------------------- */
-/* It is impossible to implement read-write locks using plain locks, without
- introducing an extra thread dedicated to managing read-write locks.
- Therefore here we need to use the low-level Event type. */
-
-typedef struct
- {
- HANDLE *array; /* array of waiting threads, each represented by an event */
- unsigned int count; /* number of waiting threads */
- unsigned int alloc; /* length of allocated array */
- unsigned int offset; /* index of first waiting thread in array */
- }
- gl_carray_waitqueue_t;
-typedef struct
- {
- gl_spinlock_t guard; /* protects the initialization */
- CRITICAL_SECTION lock; /* protects the remaining fields */
- gl_carray_waitqueue_t waiting_readers; /* waiting readers */
- gl_carray_waitqueue_t waiting_writers; /* waiting writers */
- int runcount; /* number of readers running, or -1 when a writer runs */
- }
- gl_rwlock_t;
+typedef glwthread_rwlock_t gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_rwlock_t NAME;
# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_rwlock_t NAME = gl_rwlock_initializer;
# define gl_rwlock_initializer \
- { { 0, -1 } }
+ GLWTHREAD_RWLOCK_INIT
# define glthread_rwlock_init(LOCK) \
- (glthread_rwlock_init_func (LOCK), 0)
+ (glwthread_rwlock_init (LOCK), 0)
# define glthread_rwlock_rdlock(LOCK) \
- glthread_rwlock_rdlock_func (LOCK)
+ glwthread_rwlock_rdlock (LOCK)
# define glthread_rwlock_wrlock(LOCK) \
- glthread_rwlock_wrlock_func (LOCK)
+ glwthread_rwlock_wrlock (LOCK)
# define glthread_rwlock_unlock(LOCK) \
- glthread_rwlock_unlock_func (LOCK)
+ glwthread_rwlock_unlock (LOCK)
# define glthread_rwlock_destroy(LOCK) \
- glthread_rwlock_destroy_func (LOCK)
-extern void glthread_rwlock_init_func (gl_rwlock_t *lock);
-extern int glthread_rwlock_rdlock_func (gl_rwlock_t *lock);
-extern int glthread_rwlock_wrlock_func (gl_rwlock_t *lock);
-extern int glthread_rwlock_unlock_func (gl_rwlock_t *lock);
-extern int glthread_rwlock_destroy_func (gl_rwlock_t *lock);
+ glwthread_rwlock_destroy (LOCK)
/* --------------------- gl_recursive_lock_t datatype --------------------- */
-/* The native Windows documentation says that CRITICAL_SECTION already
- implements a recursive lock. But we need not rely on it: It's easy to
- implement a recursive lock without this assumption. */
-
-typedef struct
- {
- gl_spinlock_t guard; /* protects the initialization */
- DWORD owner;
- unsigned long depth;
- CRITICAL_SECTION lock;
- }
- gl_recursive_lock_t;
+typedef glwthread_recmutex_t gl_recursive_lock_t;
# define gl_recursive_lock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME;
# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
# define gl_recursive_lock_initializer \
- { { 0, -1 }, 0, 0 }
+ GLWTHREAD_RECMUTEX_INIT
# define glthread_recursive_lock_init(LOCK) \
- (glthread_recursive_lock_init_func (LOCK), 0)
+ (glwthread_recmutex_init (LOCK), 0)
# define glthread_recursive_lock_lock(LOCK) \
- glthread_recursive_lock_lock_func (LOCK)
+ glwthread_recmutex_lock (LOCK)
# define glthread_recursive_lock_unlock(LOCK) \
- glthread_recursive_lock_unlock_func (LOCK)
+ glwthread_recmutex_unlock (LOCK)
# define glthread_recursive_lock_destroy(LOCK) \
- glthread_recursive_lock_destroy_func (LOCK)
-extern void glthread_recursive_lock_init_func (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_lock_func (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_unlock_func (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_destroy_func (gl_recursive_lock_t *lock);
+ glwthread_recmutex_destroy (LOCK)
/* -------------------------- gl_once_t datatype -------------------------- */
-typedef struct
- {
- volatile int inited;
- volatile long started;
- CRITICAL_SECTION lock;
- }
- gl_once_t;
+typedef glwthread_once_t gl_once_t;
# define gl_once_define(STORAGECLASS, NAME) \
- STORAGECLASS gl_once_t NAME = { -1, -1 };
+ STORAGECLASS gl_once_t NAME = GLWTHREAD_ONCE_INIT;
# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
- (glthread_once_func (ONCE_CONTROL, INITFUNCTION), 0)
-extern void glthread_once_func (gl_once_t *once_control, void (*initfunction) (void));
+ (glwthread_once (ONCE_CONTROL, INITFUNCTION), 0)
# ifdef __cplusplus
}
@@ -830,7 +627,7 @@ extern void glthread_once_func (gl_once_t *once_control, void (*initfunction) (v
/* ========================================================================= */
-#if !(USE_POSIX_THREADS || USE_PTH_THREADS || USE_SOLARIS_THREADS || USE_WINDOWS_THREADS)
+#if !(USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS)
/* Provide dummy implementation if threads are not supported. */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 17:14:19 +0000