X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fgthr-vxworks.h;h=4fb3b09404aa1894715eeda29b9db103533a4946;hb=f407d613ab75534e4f1af3e04604a44a0236e76f;hp=9876646781888aae1d62ce0c277e8284610947a0;hpb=26fbb0d3efe8adff66b6e39b78e070e1e6b0d936;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/gthr-vxworks.h b/gcc/gthr-vxworks.h index 98766467818..4fb3b09404a 100644 --- a/gcc/gthr-vxworks.h +++ b/gcc/gthr-vxworks.h @@ -1,24 +1,24 @@ -/* Threads compatibily routines for libgcc2 for VxWorks. */ +/* Threads compatibility routines for libgcc2 and libobjc for VxWorks. */ /* Compile this one with gcc. */ -/* Copyright (C) 1997 Free Software Foundation, Inc. +/* Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc. Contributed by Mike Stump . -This file is part of GNU CC. +This file is part of GCC. -GNU CC 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 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. -GNU CC 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 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 GNU CC; see the file COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ +along with GCC; see the file COPYING. If not, write to the Free +Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. */ /* As a special exception, if you link this library with other files, some of which are compiled with GCC, to produce an executable, @@ -27,106 +27,77 @@ Boston, MA 02111-1307, USA. */ This exception does not however invalidate any other reasons why the executable file might be covered by the GNU General Public License. */ -#ifndef __gthr_vxworks_h -#define __gthr_vxworks_h +#ifndef GCC_GTHR_VXWORKS_H +#define GCC_GTHR_VXWORKS_H -/* POSIX threads specific definitions. - Easy, since the interface is just one-to-one mapping. */ +#ifdef _LIBOBJC -#define __GTHREADS 1 - -#include -#include -/* typedef void *SEM_ID; */ - -typedef int __gthread_key_t; -typedef char __gthread_once_t; -typedef SEM_ID __gthread_mutex_t; - -#define __GTHREAD_MUTEX_INIT 0 -#define __GTHREAD_ONCE_INIT 0 - -#ifndef REG_SAVED_REG -static inline int -__gthread_once (__gthread_once_t *once, void (*func) ()) -{ - (*func)(); - return 0; -} - -extern __gthread_key_t eh_context_key; - -/* This is not the right way to do it, but the semantic of pthreads - don't map well enough onto VxWorks. */ +/* libobjc requires the optional pthreads component. */ +#include "gthr-posix.h" -static void -__ehdtor () -{ - if (eh_context_key) - free ((void*)eh_context_key); - eh_context_key = 0; -} - -/* This only works for the code in libgcc2.c. */ - -static inline int -__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *)) -{ - *key = 0; +#else - /* We don't have a way to track dtor here, so instead, we - register a generic routine that can cleanup any task. */ +#define __GTHREADS 1 +#define __gthread_active_p() 1 - taskDeleteHookAdd (__ehdtor); +/* Mutexes are easy, except that they need to be initialized at runtime. */ - return 0; -} +#include -#define __gthread_setspecific(key, ptr) \ - (key = (int) ptr, 0) +typedef SEM_ID __gthread_mutex_t; +#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function -static inline int -__gthread_key_dtor (__gthread_key_t key, void *ptr) +static inline void +__gthread_mutex_init_function (__gthread_mutex_t *mutex) { - /* Just reset the key value to zero. */ - if (ptr) - return __gthread_setspecific (key, 0); - else - return 0; + *mutex = semMCreate (SEM_Q_PRIORITY | SEM_INVERSION_SAFE | SEM_DELETE_SAFE); } -#define __gthread_key_delete(key) \ - taskVarDelete (taskIdSelf (), &key) - -#define __gthread_getspecific(key) \ - ((key == 0) \ - ? ((taskVarAdd (taskIdSelf (), &key) != OK) \ - ? (__terminate (), (void*)0) \ - : (void*)0) \ - : (void*)key) -#endif - static inline int __gthread_mutex_lock (__gthread_mutex_t *mutex) { - if (*mutex == 0) - *mutex = semMCreate (SEM_Q_PRIORITY | SEM_INVERSION_SAFE | SEM_DELETE_SAFE); return semTake (*mutex, WAIT_FOREVER); } static inline int __gthread_mutex_trylock (__gthread_mutex_t *mutex) { - if (*mutex == 0) - *mutex = semMCreate (SEM_Q_PRIORITY | SEM_INVERSION_SAFE | SEM_DELETE_SAFE); return semTake (*mutex, NO_WAIT); } static inline int __gthread_mutex_unlock (__gthread_mutex_t *mutex) { - /* We could return the */ return semGive (*mutex); } -#endif /* not __gthr_vxworks_h */ +/* pthread_once is complicated enough that it's implemented + out-of-line. See config/vxlib.c. */ + +typedef struct +{ + volatile unsigned char busy; + volatile unsigned char done; +} +__gthread_once_t; + +#define __GTHREAD_ONCE_INIT { 0, 0 } + +extern int __gthread_once (__gthread_once_t *once, void (*func)(void)); + +/* Thread-specific data requires a great deal of effort, since VxWorks + is not really set up for it. See config/vxlib.c for the gory + details. All the TSD routines are sufficiently complex that they + need to be implemented out of line. */ + +typedef unsigned int __gthread_key_t; + +extern int __gthread_key_create (__gthread_key_t *keyp, void (*dtor)(void *)); +extern int __gthread_key_delete (__gthread_key_t key); + +extern void *__gthread_getspecific (__gthread_key_t key); +extern int __gthread_setspecific (__gthread_key_t key, void *ptr); + +#endif /* not _LIBOBJC */ + +#endif /* gthr-vxworks.h */