kc3-lang/angle/scripts/code_generation_hashes/GL_EGL_entry_points.json

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• Hash : e5619a5c
  Author :
  Date : 2024-10-15T18:27:00
  

  Use EGL sync global lock for all EGL*sync entrypoint calls
  
  To free EGL sync operations from waiting for other EGL calls
  to finish, we use a separate global lock for EGL*sync entrypoints.
  Below angle::SimpleMutex are added to protect resources that may
  have race condition due to being accessed by EGL*sync calls
  and non EGL*sync calls at the same time:
  
  1. Display::mContextMapMutex that protects Display::mState.contextMap
  
  2. static angle::base::NoDestructor<angle::SimpleMutex>
  anglePlatformDisplayMapMutex that protects static
  angle::base::NoDestructor<ANGLEPlatformDisplayMap> displays
  
  3. static angle::base::NoDestructor<angle::SimpleMutex>
  devicePlatformDisplayMapMutex that protects static
  angle::base::NoDestructor<DevicePlatformDisplayMap> displays
  
  EGL_Terminate() entry point takes both global lock and
  global egl sync lock. This is to protect Display::mSyncMap,
  Display::mSyncPools, and Display::mSyncHandleAllocator being
  get cleared by thread 1 calling eglTerminate, while they are
  still accessed by thread 2 through a call such as eglCreateSync.
  So that we won't have thread 2 finish validating the sync object with
  syncID exists in Display::mSyncMap, but then find the
  mSyncMap.find(syncID) returns a nullptr due to the mSyncMap
  is cleared by thread 1. Same applies to EGL_LabelObjectKHR(),
  EGL_ReleaseThread(), ThreadCleanupCallback().
  
  EGL_Initialize() writes to Display::mInitialized. This is read
  by EGL Sync API validation functions. EGL_Initialize() also takes
  both global lock and global sync lock to prevent race conditions
  between EGL_Initialize() and EGL Sync APIs.
  
  When ANGLE_CAPTURE_ENABLED is enabled, fall back to global lock,
  as the CaptureEGLCallToFrameCapture() touches many resources
  (e.g. mMaxAccessedResourceIDs, mFrameCalls)
  that could lead to race conditions without a global lock.
  
  Bug: b/362604439
  Change-Id: Ic0d54a4cd66743bcd0f48f41f247dd223cff2f5e
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5933570
  Reviewed-by: Roman Lavrov <romanl@google.com>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Igor Nazarov <i.nazarov@samsung.com>
  Commit-Queue: Yuxin Hu <yuxinhu@google.com>
  

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• scripts/code_generation_hashes/GL_EGL_entry_points.json

• {
    "scripts/egl_angle_ext.xml":
      "b3bef068d5c832d52adf78047a22b467",
    "scripts/entry_point_packed_egl_enums.json":
      "a72ae855c6b403912103b519139951a1",
    "scripts/entry_point_packed_gl_enums.json":
      "57a3a729fd25032bc336f4b6a55bc238",
    "scripts/generate_entry_points.py":
      "650fe5fb60ff13aebfdf704c564ad998",
    "scripts/gl_angle_ext.xml":
      "b63b35cce3edd88219d2ffd0a78c708d",
    "scripts/registry_xml.py":
      "5553bbd65b566e784fe675048833a4ca",
    "src/common/entry_points_enum_autogen.cpp":
      "c4d9643dce069cdd462c4d68958adf3c",
    "src/common/entry_points_enum_autogen.h":
      "394491a8e3851e0f254622ffa7641c5f",
    "src/common/frame_capture_utils_autogen.cpp":
      "f5dc057d49cdbbfd875fda6bb726161c",
    "src/common/frame_capture_utils_autogen.h":
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    "src/libANGLE/Context_gles_1_0_autogen.h":
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    "src/libANGLE/Context_gles_2_0_autogen.h":
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    "src/libANGLE/Context_gles_3_0_autogen.h":
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    "src/libANGLE/Context_gles_3_1_autogen.h":
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    "src/libANGLE/Context_gles_3_2_autogen.h":
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    "src/libANGLE/Context_gles_ext_autogen.h":
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    "src/libANGLE/capture/capture_egl_autogen.cpp":
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    "src/libGLESv2/entry_points_gles_3_0_autogen.cpp":
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    "src/libGLESv2/entry_points_gles_3_0_autogen.h":
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    "util/capture/frame_capture_replay_autogen.cpp":
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  }
  

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