/* ** Copyright (C) 2007, The Android Open Source Project ** ** 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. */ #include "cutils/threads.h" // For gettid. #if defined(__APPLE__) #include "AvailabilityMacros.h" // For MAC_OS_X_VERSION_MAX_ALLOWED #include <stdint.h> #include <stdlib.h> #include <sys/syscall.h> #include <sys/time.h> #include <unistd.h> #elif defined(__linux__) && !defined(__ANDROID__) #include <syscall.h> #include <unistd.h> #elif defined(_WIN32) #include <windows.h> #endif // No definition needed for Android because we'll just pick up bionic's copy. #ifndef __ANDROID__ pid_t gettid() { #if defined(__APPLE__) return syscall(SYS_thread_selfid); #elif defined(__linux__) return syscall(__NR_gettid); #elif defined(_WIN32) return GetCurrentThreadId(); #endif } #endif // __ANDROID__ #if !defined(_WIN32) void* thread_store_get( thread_store_t* store ) { if (!store->has_tls) return NULL; return pthread_getspecific( store->tls ); } extern void thread_store_set( thread_store_t* store, void* value, thread_store_destruct_t destroy) { pthread_mutex_lock( &store->lock ); if (!store->has_tls) { if (pthread_key_create( &store->tls, destroy) != 0) { pthread_mutex_unlock(&store->lock); return; } store->has_tls = 1; } pthread_mutex_unlock( &store->lock ); pthread_setspecific( store->tls, value ); } #else /* !defined(_WIN32) */ void* thread_store_get( thread_store_t* store ) { if (!store->has_tls) return NULL; return (void*) TlsGetValue( store->tls ); } void thread_store_set( thread_store_t* store, void* value, thread_store_destruct_t destroy ) { /* XXX: can't use destructor on thread exit */ if (!store->lock_init) { store->lock_init = -1; InitializeCriticalSection( &store->lock ); store->lock_init = -2; } else while (store->lock_init != -2) { Sleep(10); /* 10ms */ } EnterCriticalSection( &store->lock ); if (!store->has_tls) { store->tls = TlsAlloc(); if (store->tls == TLS_OUT_OF_INDEXES) { LeaveCriticalSection( &store->lock ); return; } store->has_tls = 1; } LeaveCriticalSection( &store->lock ); TlsSetValue( store->tls, value ); } #endif /* !defined(_WIN32) */