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authorpeter <peter@FreeBSD.org>2008-06-01 00:03:21 +0000
committerpeter <peter@FreeBSD.org>2008-06-01 00:03:21 +0000
commita2be5f0c15218b0177d73b17d9bcb7589965d685 (patch)
treec9f0cd9c22378356a1716d32e13e70bc90f98b9c /libobjc/objc/thr.h
parent9e0f3cc19c9df1594c9cc36cfd8fddc83c52ad12 (diff)
downloadFreeBSD-src-a2be5f0c15218b0177d73b17d9bcb7589965d685.zip
FreeBSD-src-a2be5f0c15218b0177d73b17d9bcb7589965d685.tar.gz
Reorganize the gcc vendor import work area. This flattens out a bunch
of unnecessary path components that are relics of cvs2svn. (These are directory moves)
Diffstat (limited to 'libobjc/objc/thr.h')
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diff --git a/libobjc/objc/thr.h b/libobjc/objc/thr.h
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+/* Thread and mutex controls for Objective C.
+ Copyright (C) 1996, 1997, 2002, 2004 Free Software Foundation, Inc.
+ Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
+
+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 2, 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.
+
+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 2, 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.
+
+You should have received a copy of the GNU General Public License along with
+GCC; see the file COPYING. If not, write to the Free Software
+Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
+
+/* As a special exception, if you link this library with files
+ compiled with GCC to produce an executable, this does not cause
+ the resulting executable to be covered by the GNU General Public License.
+ This exception does not however invalidate any other reasons why
+ the executable file might be covered by the GNU General Public License. */
+
+
+#ifndef __thread_INCLUDE_GNU
+#define __thread_INCLUDE_GNU
+
+#include "objc.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/*************************************************************************
+ * Universal static variables:
+ */
+extern int __objc_thread_exit_status; /* Global exit status. */
+
+/********
+ * Thread safe implementation types and functions.
+ */
+
+/* Thread priorities */
+#define OBJC_THREAD_INTERACTIVE_PRIORITY 2
+#define OBJC_THREAD_BACKGROUND_PRIORITY 1
+#define OBJC_THREAD_LOW_PRIORITY 0
+
+/* A thread */
+typedef void * objc_thread_t;
+
+/* This structure represents a single mutual exclusion lock. */
+struct objc_mutex
+{
+ volatile objc_thread_t owner; /* Id of thread that owns. */
+ volatile int depth; /* # of acquires. */
+ void * backend; /* Specific to backend */
+};
+typedef struct objc_mutex *objc_mutex_t;
+
+/* This structure represents a single condition mutex */
+struct objc_condition
+{
+ void * backend; /* Specific to backend */
+};
+typedef struct objc_condition *objc_condition_t;
+
+/* Frontend mutex functions */
+objc_mutex_t objc_mutex_allocate (void);
+int objc_mutex_deallocate (objc_mutex_t mutex);
+int objc_mutex_lock (objc_mutex_t mutex);
+int objc_mutex_unlock (objc_mutex_t mutex);
+int objc_mutex_trylock (objc_mutex_t mutex);
+
+/* Frontend condition mutex functions */
+objc_condition_t objc_condition_allocate (void);
+int objc_condition_deallocate (objc_condition_t condition);
+int objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex);
+int objc_condition_signal (objc_condition_t condition);
+int objc_condition_broadcast (objc_condition_t condition);
+
+/* Frontend thread functions */
+objc_thread_t objc_thread_detach (SEL selector, id object, id argument);
+void objc_thread_yield (void);
+int objc_thread_exit (void);
+int objc_thread_set_priority (int priority);
+int objc_thread_get_priority (void);
+void * objc_thread_get_data (void);
+int objc_thread_set_data (void *value);
+objc_thread_t objc_thread_id (void);
+void objc_thread_add (void);
+void objc_thread_remove (void);
+
+/*
+ Use this to set the hook function that will be called when the
+ runtime initially becomes multi threaded.
+ The hook function is only called once, meaning only when the
+ 2nd thread is spawned, not for each and every thread.
+
+ It returns the previous hook function or NULL if there is none.
+
+ A program outside of the runtime could set this to some function so
+ it can be informed; for example, the GNUstep Base Library sets it
+ so it can implement the NSBecomingMultiThreaded notification.
+ */
+typedef void (*objc_thread_callback) (void);
+objc_thread_callback objc_set_thread_callback (objc_thread_callback func);
+
+/* Backend initialization functions */
+int __objc_init_thread_system (void);
+int __objc_fini_thread_system (void);
+
+/* Backend mutex functions */
+int __objc_mutex_allocate (objc_mutex_t mutex);
+int __objc_mutex_deallocate (objc_mutex_t mutex);
+int __objc_mutex_lock (objc_mutex_t mutex);
+int __objc_mutex_trylock (objc_mutex_t mutex);
+int __objc_mutex_unlock (objc_mutex_t mutex);
+
+/* Backend condition mutex functions */
+int __objc_condition_allocate (objc_condition_t condition);
+int __objc_condition_deallocate (objc_condition_t condition);
+int __objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex);
+int __objc_condition_broadcast (objc_condition_t condition);
+int __objc_condition_signal (objc_condition_t condition);
+
+/* Backend thread functions */
+objc_thread_t __objc_thread_detach (void (*func) (void *arg), void *arg);
+int __objc_thread_set_priority (int priority);
+int __objc_thread_get_priority (void);
+void __objc_thread_yield (void);
+int __objc_thread_exit (void);
+objc_thread_t __objc_thread_id (void);
+int __objc_thread_set_data (void *value);
+void * __objc_thread_get_data (void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* not __thread_INCLUDE_GNU */
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