kc3-lang/angle/src/common/tls.h

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• Hash : 11dc1635
  Author :
  Date : 2019-09-18T14:46:23
  

  Add support for generating UWP (Windows Store) projects again
  
  Until late 2017, ANGLE supported  Windows Store apps on Windows 8.1,
  Windows Phone 8.1, and Windows 10 (via the Universal Windows
  Platform, aka UWP).
  
  Unfortunately ANGLE deprecated support for Windows Store when it
  switched from GYP to GN in 2017. Since then, users have been able
  to use Microsoft\angle for their UWP apps but this isn't ideal since
  it's based on a 2017 copy of Google\angle.
  
  This PR bring back support for UWPs, so that UWP users can use
  Google\angle again. Specifically it:
  
  - Adds support for generating UWP projects via GN
  - Adds helper/util functions specific to UWP (they're mostly
  similar to the desktop Windows helpers)
  - Fixes some existing Windows Store code that's rotted since 2017
  - Disables async shader compilation for UWPs, since its
  implementation calls wait on the UI thread (which is forbidden
  in UWPs)
  - Renames 'ANGLE_ENABLE_WINDOWS_STORE' to
  'ANGLE_ENABLE_WINDOWS_UWP', since ANGLE only support UWPs now
  - Fixes misc other related issues (such as dependencies on D3D9
  headers in API-agnostic code)
  
  Note that this doesn't bring back support for Windows/Phone 8.1.
  
  BUG=angleproject:3922
  
  Change-Id: Ia79ae05a5e0e0a0625eb633bf1928722dfd3e85f
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1811871
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/common/tls.h

• //
  // 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_
  

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