mirror of
https://gcc.gnu.org/git/gcc.git
synced 2024-11-25 11:54:01 +08:00
fd3125375f
In libobjc/:
Implemented objc_sync_enter() and objc_sync_exit(), which are
required by @synchronized() to work.
* objc-sync.c: New file.
* objc/objc-sync.h: New file.
* objc-private/objc-sync.h: New file.
* init.c (__objc_exec_class): Call __objc_sync_init() during the
Objective-C runtime startup.
* Makefile.in: Added objc-sync.c and objc-sync.h.
* configure.ac: Added GCC_CHECK_TLS.
* acinclude.m4: Include ../config/enable.m4 and ../config/tls.m4.
* configure: Regenerated.
* config.h.in: Regenerated.
From-SVN: r164276
71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
/* GNU Objective C Runtime @synchronized implementation
|
|
Copyright (C) 2010 Free Software Foundation, Inc.
|
|
Contributed by Nicola Pero <nicola.pero@meta-innovation.com>
|
|
|
|
This file is part of GCC.
|
|
|
|
GCC is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3, or (at your option)
|
|
any later version.
|
|
|
|
GCC 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.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef __objc_sync_INCLUDE_GNU
|
|
#define __objc_sync_INCLUDE_GNU
|
|
|
|
#include "objc.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* These functions are automatically called by @synchronized(). */
|
|
|
|
/* 'objc_sync_enter' is automatically called when entering a
|
|
@synchronized() block. It locks the recursive lock associated with
|
|
'object'. If 'object' is nil, it does nothing. It returns
|
|
OBJC_SYNC_SUCCESS on success; see the enumeration below for error
|
|
values.
|
|
|
|
Note that you should not rely on the behaviour when 'object' is nil
|
|
because it could change.
|
|
*/
|
|
int objc_sync_enter (id object);
|
|
|
|
/* 'objc_sync_exit' is automatically called when exiting from a
|
|
@synchronized() block. It unlocks the recursive lock associated
|
|
with 'object'. If 'object' is nil, it does nothing. It returns
|
|
OBJC_SYNC_SUCCESS on success; see the enumeration below for error
|
|
values.
|
|
*/
|
|
int objc_sync_exit (id object);
|
|
|
|
/* All the possible return values for objc_sync_enter() and
|
|
objc_sync_exit().
|
|
*/
|
|
enum {
|
|
OBJC_SYNC_SUCCESS = 0,
|
|
OBJC_SYNC_NOT_OWNING_THREAD_ERROR = -1,
|
|
OBJC_SYNC_TIMED_OUT = -2,
|
|
OBJC_SYNC_NOT_INITIALIZED = -3
|
|
};
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* not __objc_sync_INCLUDE_GNU */
|