/* * Copyright (c) 2008-2011 Apple Inc. All rights reserved. * * @APPLE_APACHE_LICENSE_HEADER_START@ * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * @APPLE_APACHE_LICENSE_HEADER_END@ */ /* * IMPORTANT: This header file describes INTERNAL interfaces to libdispatch * which are subject to change in future releases of Mac OS X. Any applications * relying on these interfaces WILL break. */ #ifndef __DISPATCH_OS_SHIMS__ #define __DISPATCH_OS_SHIMS__ #include <pthread.h> #if HAVE_PTHREAD_WORKQUEUES #include <pthread_workqueue.h> #endif #if HAVE_PTHREAD_NP_H #include <pthread_np.h> #endif #if !HAVE_DECL_FD_COPY #define FD_COPY(f, t) (void)(*(t) = *(f)) #endif #if !HAVE_NORETURN_BUILTIN_TRAP /* * XXXRW: Work-around for possible clang bug in which __builtin_trap() is not * marked noreturn, leading to a build error as dispatch_main() *is* marked * noreturn. Mask by marking __builtin_trap() as noreturn locally. */ DISPATCH_NORETURN void __builtin_trap(void); #endif #include "shims/atomic.h" #include "shims/tsd.h" #include "shims/hw_config.h" #include "shims/perfmon.h" #include "shims/getprogname.h" #include "shims/malloc_zone.h" #include "shims/time.h" #ifdef __APPLE__ // Clear the stack before calling long-running thread-handler functions that // never return (and don't take arguments), to facilitate leak detection and // provide cleaner backtraces. <rdar://problem/9050566> #define _dispatch_clear_stack(s) do { \ void *a[(s)/sizeof(void*) ? (s)/sizeof(void*) : 1]; \ a[0] = pthread_get_stackaddr_np(pthread_self()); \ bzero((void*)&a[1], a[0] - (void*)&a[1]); \ } while (0) #else #define _dispatch_clear_stack(s) #endif #endif