| // |
| // Copyright 2014 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| |
| // tls.h: Simple cross-platform interface for thread local storage. |
| |
| #ifndef COMMON_TLS_H_ |
| #define COMMON_TLS_H_ |
| |
| #include "common/platform.h" |
| |
| #ifdef ANGLE_PLATFORM_WINDOWS |
| |
| // TLS does not exist for Windows Store and needs to be emulated |
| # ifdef ANGLE_ENABLE_WINDOWS_UWP |
| # ifndef TLS_OUT_OF_INDEXES |
| # define TLS_OUT_OF_INDEXES static_cast<DWORD>(0xFFFFFFFF) |
| # endif |
| # ifndef CREATE_SUSPENDED |
| # define CREATE_SUSPENDED 0x00000004 |
| # endif |
| # endif |
| typedef DWORD TLSIndex; |
| # define TLS_INVALID_INDEX (TLS_OUT_OF_INDEXES) |
| #elif defined(ANGLE_PLATFORM_POSIX) |
| # include <errno.h> |
| # include <pthread.h> |
| # include <semaphore.h> |
| typedef pthread_key_t TLSIndex; |
| # define TLS_INVALID_INDEX (static_cast<TLSIndex>(-1)) |
| #else |
| # error Unsupported platform. |
| #endif |
| |
| // TODO(kbr): for POSIX platforms this will have to be changed to take |
| // in a destructor function pointer, to allow the thread-local storage |
| // to be properly deallocated upon thread exit. |
| TLSIndex CreateTLSIndex(); |
| bool DestroyTLSIndex(TLSIndex index); |
| |
| bool SetTLSValue(TLSIndex index, void *value); |
| void *GetTLSValue(TLSIndex index); |
| |
| #endif // COMMON_TLS_H_ |
