--- /dev/null
+/* Thread-local storage in multithreaded situations.
+ Copyright (C) 2005 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Library General Public License as published
+ by the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+ USA. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "tls.h"
+
+/* ========================================================================= */
+
+#if USE_POSIX_THREADS
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_PTH_THREADS
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_SOLARIS_THREADS
+
+/* Use the old Solaris threads library. */
+
+/* ------------------------- gl_tls_key_t datatype ------------------------- */
+
+void
+glthread_tls_get (thread_key_t key)
+{
+ void *value;
+
+ if (thr_getspecific (key, &value) != 0)
+ abort ();
+ return value;
+}
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_WIN32_THREADS
+
+#endif
+
+/* ========================================================================= */
--- /dev/null
+/* Thread-local storage in multithreaded situations.
+ Copyright (C) 2005 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Library General Public License as published
+ by the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+ USA. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005. */
+
+/* This file contains thread-local storage primitives for use with a given
+ thread library. It does not contain primitives for creating threads or
+ for other multithreading primitives.
+
+ Type: gl_tls_key_t
+ Initialization: gl_tls_key_init (name, destructor);
+ Getting per-thread value: gl_tls_get (name)
+ Setting per-thread value: gl_tls_set (name, pointer);
+ De-initialization: gl_tls_key_destroy (name);
+
+ A per-thread value is of type 'void *'.
+
+ A destructor is a function pointer of type 'void (*) (void *)', called
+ when a thread exits, and taking the last per-thread value as argument. It
+ is unspecified whether the destructor function is called when the last
+ per-thread value is NULL. On some platforms, the destructor function is
+ not called at all.
+*/
+
+
+#ifndef _TLS_H
+#define _TLS_H
+
+/* ========================================================================= */
+
+#if USE_POSIX_THREADS
+
+/* Use the POSIX threads library. */
+
+# include <pthread.h>
+# include <stdlib.h>
+
+# if PTHREAD_IN_USE_DETECTION_HARD
+
+/* The pthread_in_use() detection needs to be done at runtime. */
+# define pthread_in_use() \
+ glthread_in_use ()
+extern int glthread_in_use (void);
+
+# endif
+
+# if USE_POSIX_THREADS_WEAK
+
+/* Use weak references to the POSIX threads library. */
+
+# pragma weak pthread_key_create
+# pragma weak pthread_getspecific
+# pragma weak pthread_setspecific
+# pragma weak pthread_key_delete
+# ifndef pthread_self
+# pragma weak pthread_self
+# endif
+
+# if !PTHREAD_IN_USE_DETECTION_HARD
+# pragma weak pthread_cancel
+# define pthread_in_use() (pthread_cancel != NULL)
+# endif
+
+# else
+
+# if !PTHREAD_IN_USE_DETECTION_HARD
+# define pthread_in_use() 1
+# endif
+
+# endif
+
+/* ------------------------- gl_tls_key_t datatype ------------------------- */
+
+typedef union
+ {
+ void *singlethread_value;
+ pthread_key_t key;
+ }
+ gl_tls_key_t;
+# define gl_tls_key_init(NAME, DESTRUCTOR) \
+ do \
+ { \
+ if (pthread_in_use ()) \
+ { \
+ if (pthread_key_create (&(NAME).key, DESTRUCTOR) != 0) \
+ abort (); \
+ } \
+ else \
+ (NAME).singlethread_value = NULL; \
+ } \
+ while (0)
+# define gl_tls_get(NAME) \
+ (pthread_in_use () \
+ ? pthread_getspecific ((NAME).key) \
+ : (NAME).singlethread_value)
+# define gl_tls_set(NAME, POINTER) \
+ do \
+ { \
+ if (pthread_in_use ()) \
+ { \
+ if (pthread_setspecific ((NAME).key, (POINTER)) != 0) \
+ abort (); \
+ } \
+ else \
+ (NAME).singlethread_value = (POINTER); \
+ } \
+ while (0)
+# define gl_tls_key_destroy(NAME) \
+ if (pthread_in_use () && pthread_key_delete ((NAME).key) != 0) \
+ abort ()
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_PTH_THREADS
+
+/* Use the GNU Pth threads library. */
+
+# include <pth.h>
+# include <stdlib.h>
+
+# if USE_PTH_THREADS_WEAK
+
+/* Use weak references to the GNU Pth threads library. */
+
+# pragma weak pth_key_create
+# pragma weak pth_key_getdata
+# pragma weak pth_key_setdata
+# pragma weak pth_key_delete
+
+# pragma weak pth_cancel
+# define pth_in_use() (pth_cancel != NULL)
+
+# else
+
+# define pth_in_use() 1
+
+# endif
+
+/* ------------------------- gl_tls_key_t datatype ------------------------- */
+
+typedef union
+ {
+ void *singlethread_value;
+ pth_key_t key;
+ }
+ gl_tls_key_t;
+# define gl_tls_key_init(NAME, DESTRUCTOR) \
+ do \
+ { \
+ if (pth_in_use ()) \
+ { \
+ if (!pth_key_create (&(NAME).key, DESTRUCTOR)) \
+ abort (); \
+ } \
+ else \
+ (NAME).singlethread_value = NULL; \
+ } \
+ while (0)
+# define gl_tls_get(NAME) \
+ (pth_in_use () \
+ ? pth_key_getdata ((NAME).key) \
+ : (NAME).singlethread_value)
+# define gl_tls_set(NAME, POINTER) \
+ do \
+ { \
+ if (pth_in_use ()) \
+ { \
+ if (!pth_key_setdata ((NAME).key, (POINTER))) \
+ abort (); \
+ } \
+ else \
+ (NAME).singlethread_value = (POINTER); \
+ } \
+ while (0)
+# define gl_tls_key_destroy(NAME) \
+ if (pth_in_use () && !pth_key_delete ((NAME).key)) \
+ abort ()
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_SOLARIS_THREADS
+
+/* Use the old Solaris threads library. */
+
+# include <thread.h>
+# include <stdlib.h>
+
+# if USE_SOLARIS_THREADS_WEAK
+
+/* Use weak references to the old Solaris threads library. */
+
+# pragma weak thr_keycreate
+# pragma weak thr_getspecific
+# pragma weak thr_setspecific
+
+# pragma weak thr_suspend
+# define thread_in_use() (thr_suspend != NULL)
+
+# else
+
+# define thread_in_use() 1
+
+# endif
+
+/* ------------------------- gl_tls_key_t datatype ------------------------- */
+
+typedef union
+ {
+ void *singlethread_value;
+ thread_key_t key;
+ }
+ gl_tls_key_t;
+# define gl_tls_key_init(NAME, DESTRUCTOR) \
+ do \
+ { \
+ if (thread_in_use ()) \
+ { \
+ if (thr_keycreate (&(NAME).key, DESTRUCTOR) != 0) \
+ abort (); \
+ } \
+ else \
+ (NAME).singlethread_value = NULL; \
+ } \
+ while (0)
+# define gl_tls_get(NAME) \
+ (thread_in_use () \
+ ? glthread_tls_get ((NAME).key) \
+ : (NAME).singlethread_value)
+extern void *glthread_tls_get (thread_key_t key);
+# define gl_tls_set(NAME, POINTER) \
+ do \
+ { \
+ if (thread_in_use ()) \
+ { \
+ if (thr_setspecific ((NAME).key, (POINTER)) != 0) \
+ abort (); \
+ } \
+ else \
+ (NAME).singlethread_value = (POINTER); \
+ } \
+ while (0)
+# define gl_tls_key_destroy(NAME) \
+ /* Unsupported. */ \
+ (void)0
+
+#endif
+
+/* ========================================================================= */
+
+#if USE_WIN32_THREADS
+
+# include <windows.h>
+
+/* ------------------------- gl_tls_key_t datatype ------------------------- */
+
+typedef DWORD gl_tls_key_t;
+# define gl_tls_key_init(NAME, DESTRUCTOR) \
+ /* The destructor is unsupported. */ \
+ if (((NAME) = TlsAlloc ()) == (DWORD)-1) \
+ abort ()
+# define gl_tls_get(NAME) \
+ TlsGetValue (NAME)
+# define gl_tls_set(NAME, POINTER) \
+ if (!TlsSetValue (NAME, POINTER)) \
+ abort ()
+# define gl_tls_key_destroy(NAME) \
+ if (!TlsFree (NAME)) \
+ abort ()
+
+#endif
+
+/* ========================================================================= */
+
+#if !(USE_POSIX_THREADS || USE_PTH_THREADS || USE_SOLARIS_THREADS || USE_WIN32_THREADS)
+
+/* Provide dummy implementation if threads are not supported. */
+
+/* ------------------------- gl_tls_key_t datatype ------------------------- */
+
+typedef struct
+ {
+ void *singlethread_value;
+ }
+ gl_tls_key_t;
+# define gl_tls_key_init(NAME, DESTRUCTOR) \
+ (NAME).singlethread_value = NULL
+# define gl_tls_get(NAME) \
+ (NAME).singlethread_value
+# define gl_tls_set(NAME, POINTER) \
+ (NAME).singlethread_value = (POINTER)
+# define gl_tls_key_destroy(NAME) \
+ (void)0
+
+#endif
+
+/* ========================================================================= */
+
+#endif /* _TLS_H */
projects / thirdparty / gettext.git / commitdiff
