| // |
| // Copyright (c) 2002-2010 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. |
| // |
| |
| // |
| // This file contains the posix specific functions |
| // |
| #include "compiler/osinclude.h" |
| |
| #if !defined(ANGLE_OS_POSIX) |
| #error Trying to build a posix specific file in a non-posix build. |
| #endif |
| |
| // |
| // Thread cleanup |
| // |
| |
| // |
| // Wrapper for Linux call to DetachThread. |
| // This is required as pthread_cleanup_push() expects the cleanup routine |
| // to return void. |
| // |
| void DetachThreadLinux(void *) |
| { |
| DetachThread(); |
| } |
| |
| // |
| // Registers cleanup handler, sets cancel type and state, and excecutes |
| // the thread specific cleanup handler. When OpenGL applications are run with |
| // the driver code, Linux OS does the thread cleanup. |
| // |
| void OS_CleanupThreadData(void) |
| { |
| int old_cancel_state, old_cancel_type; |
| void *cleanupArg = NULL; |
| |
| // |
| // Set thread cancel state and push cleanup handler. |
| // |
| pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &old_cancel_state); |
| pthread_cleanup_push(DetachThreadLinux, (void *) cleanupArg); |
| |
| // |
| // Put the thread in deferred cancellation mode. |
| // |
| pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, &old_cancel_type); |
| |
| // |
| // Pop cleanup handler and execute it prior to unregistering |
| // the cleanup handler. |
| // |
| pthread_cleanup_pop(1); |
| |
| // |
| // Restore the thread's previous cancellation mode. |
| // |
| pthread_setcanceltype(old_cancel_state, NULL); |
| } |
| |
| // |
| // Thread Local Storage Operations |
| // |
| OS_TLSIndex OS_AllocTLSIndex() |
| { |
| pthread_key_t pPoolIndex; |
| |
| // |
| // Create global pool key. |
| // |
| if ((pthread_key_create(&pPoolIndex, NULL)) != 0) { |
| assert(0 && "OS_AllocTLSIndex(): Unable to allocate Thread Local Storage"); |
| return false; |
| } |
| else { |
| return pPoolIndex; |
| } |
| } |
| |
| |
| bool OS_SetTLSValue(OS_TLSIndex nIndex, void *lpvValue) |
| { |
| if (nIndex == OS_INVALID_TLS_INDEX) { |
| assert(0 && "OS_SetTLSValue(): Invalid TLS Index"); |
| return false; |
| } |
| |
| if (pthread_setspecific(nIndex, lpvValue) == 0) |
| return true; |
| else |
| return false; |
| } |
| |
| |
| bool OS_FreeTLSIndex(OS_TLSIndex nIndex) |
| { |
| if (nIndex == OS_INVALID_TLS_INDEX) { |
| assert(0 && "OS_SetTLSValue(): Invalid TLS Index"); |
| return false; |
| } |
| |
| // |
| // Delete the global pool key. |
| // |
| if (pthread_key_delete(nIndex) == 0) |
| return true; |
| else |
| return false; |
| } |