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62 lines
2.1 KiB
C
62 lines
2.1 KiB
C
/* Thread and mutex controls for Objective C.
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Copyright (C) 1996, 1997, 2002, 2004, 2009 Free Software Foundation, Inc.
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Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef __thread_INCLUDE_GNU
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#define __thread_INCLUDE_GNU
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#include "objc.h"
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/** Recursive mutex type used to protect the runtime. */
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typedef void *objc_mutex_t;
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/**
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* Global runtime mutex. Acquire this before calling any unsafe runtime
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* functions. Note that this is never needed if you restrict yourself to the
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* public interfaces, which are strongly recommended.
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*/
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extern objc_mutex_t __objc_runtime_mutex;
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/* Frontend mutex functions */
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int objc_mutex_lock (objc_mutex_t mutex);
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int objc_mutex_unlock (objc_mutex_t mutex);
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/**
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* Callback for when the runtime becomes multithreaded. As the runtime is now
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* always in multithreaded mode, the callback is called as soon as it is
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* registered and then discarded. This interface is maintained solely for
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* legacy compatibility.
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*/
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typedef void (*objc_thread_callback) (void);
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objc_thread_callback objc_set_thread_callback (objc_thread_callback func);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* not __thread_INCLUDE_GNU */
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