Edit File: gthr-single.h
/* Threads compatibility routines for libgcc2 and libobjc. */ /* Compile this one with gcc. */ /* Copyright (C) 1997-2018 Free Software Foundation, Inc. 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 _GLIBCXX_GCC_GTHR_SINGLE_H #define _GLIBCXX_GCC_GTHR_SINGLE_H /* Just provide compatibility for mutex handling. */ typedef int __gthread_key_t; typedef int __gthread_once_t; typedef int __gthread_mutex_t; typedef int __gthread_recursive_mutex_t; #define __GTHREAD_ONCE_INIT 0 #define __GTHREAD_MUTEX_INIT 0 #define __GTHREAD_MUTEX_INIT_FUNCTION(mx) do {} while (0) #define __GTHREAD_RECURSIVE_MUTEX_INIT 0 #define _GLIBCXX_UNUSED __attribute__((__unused__)) #ifdef _LIBOBJC /* Thread local storage for a single thread */ static void *thread_local_storage = NULL; /* Backend initialization functions */ /* Initialize the threads subsystem. */ static inline int __gthread_objc_init_thread_system (void) { /* No thread support available */ return -1; } /* Close the threads subsystem. */ static inline int __gthread_objc_close_thread_system (void) { /* No thread support available */ return -1; } /* Backend thread functions */ /* Create a new thread of execution. */ static inline objc_thread_t __gthread_objc_thread_detach (void (* func)(void *), void * arg _GLIBCXX_UNUSED) { /* No thread support available */ return NULL; } /* Set the current thread's priority. */ static inline int __gthread_objc_thread_set_priority (int priority _GLIBCXX_UNUSED) { /* No thread support available */ return -1; } /* Return the current thread's priority. */ static inline int __gthread_objc_thread_get_priority (void) { return OBJC_THREAD_INTERACTIVE_PRIORITY; } /* Yield our process time to another thread. */ static inline void __gthread_objc_thread_yield (void) { return; } /* Terminate the current thread. */ static inline int __gthread_objc_thread_exit (void) { /* No thread support available */ /* Should we really exit the program */ /* exit (&__objc_thread_exit_status); */ return -1; } /* Returns an integer value which uniquely describes a thread. */ static inline objc_thread_t __gthread_objc_thread_id (void) { /* No thread support, use 1. */ return (objc_thread_t) 1; } /* Sets the thread's local storage pointer. */ static inline int __gthread_objc_thread_set_data (void *value) { thread_local_storage = value; return 0; } /* Returns the thread's local storage pointer. */ static inline void * __gthread_objc_thread_get_data (void) { return thread_local_storage; } /* Backend mutex functions */ /* Allocate a mutex. */ static inline int __gthread_objc_mutex_allocate (objc_mutex_t mutex _GLIBCXX_UNUSED) { return 0; } /* Deallocate a mutex. */ static inline int __gthread_objc_mutex_deallocate (objc_mutex_t mutex _GLIBCXX_UNUSED) { return 0; } /* Grab a lock on a mutex. */ static inline int __gthread_objc_mutex_lock (objc_mutex_t mutex _GLIBCXX_UNUSED) { /* There can only be one thread, so we always get the lock */ return 0; } /* Try to grab a lock on a mutex. */ static inline int __gthread_objc_mutex_trylock (objc_mutex_t mutex _GLIBCXX_UNUSED) { /* There can only be one thread, so we always get the lock */ return 0; } /* Unlock the mutex */ static inline int __gthread_objc_mutex_unlock (objc_mutex_t mutex _GLIBCXX_UNUSED) { return 0; } /* Backend condition mutex functions */ /* Allocate a condition. */ static inline int __gthread_objc_condition_allocate (objc_condition_t condition _GLIBCXX_UNUSED) { return 0; } /* Deallocate a condition. */ static inline int __gthread_objc_condition_deallocate (objc_condition_t condition _GLIBCXX_UNUSED) { return 0; } /* Wait on the condition */ static inline int __gthread_objc_condition_wait (objc_condition_t condition _GLIBCXX_UNUSED, objc_mutex_t mutex _GLIBCXX_UNUSED) { return 0; } /* Wake up all threads waiting on this condition. */ static inline int __gthread_objc_condition_broadcast (objc_condition_t condition _GLIBCXX_UNUSED) { return 0; } /* Wake up one thread waiting on this condition. */ static inline int __gthread_objc_condition_signal (objc_condition_t condition _GLIBCXX_UNUSED) { return 0; } #else /* _LIBOBJC */ static inline int __gthread_active_p (void) { return 0; } static inline int __gthread_once (__gthread_once_t *__once _GLIBCXX_UNUSED, void (*__func) (void) _GLIBCXX_UNUSED) { return 0; } static inline int _GLIBCXX_UNUSED __gthread_key_create (__gthread_key_t *__key _GLIBCXX_UNUSED, void (*__func) (void *) _GLIBCXX_UNUSED) { return 0; } static int _GLIBCXX_UNUSED __gthread_key_delete (__gthread_key_t __key _GLIBCXX_UNUSED) { return 0; } static inline void * __gthread_getspecific (__gthread_key_t __key _GLIBCXX_UNUSED) { return 0; } static inline int __gthread_setspecific (__gthread_key_t __key _GLIBCXX_UNUSED, const void *__v _GLIBCXX_UNUSED) { return 0; } static inline int __gthread_mutex_destroy (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED) { return 0; } static inline int __gthread_mutex_lock (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED) { return 0; } static inline int __gthread_mutex_trylock (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED) { return 0; } static inline int __gthread_mutex_unlock (__gthread_mutex_t *__mutex _GLIBCXX_UNUSED) { return 0; } static inline int __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) { return __gthread_mutex_lock (__mutex); } static inline int __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) { return __gthread_mutex_trylock (__mutex); } static inline int __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) { return __gthread_mutex_unlock (__mutex); } static inline int __gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex) { return __gthread_mutex_destroy (__mutex); } #endif /* _LIBOBJC */ #undef _GLIBCXX_UNUSED #endif /* ! _GLIBCXX_GCC_GTHR_SINGLE_H */
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