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Hash : b22124bd
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Date : 2023-01-17T17:44:06

Implement new "Global Mutex" functionality.

This CL improves performance compared to the existing code as well as
allows using non-std mutex implementations. Also acts as a base for
future changes.

CL adds new build option:
    angle_enable_global_mutex_recursion = is_android && angle_enable_vulkan

"mutex_recursion" work same way as `std::recursive_mutex` before. It
will help in situations when Vulkan API may return back to the ANGLE.
For example: RenderDoc layer EGL deadlock.
Automatic loading of "libVkLayer_GLES_RenderDoc.so" layer causes
deadlock in EGL.
Recursion stack:
    #01 pc 000000000029ea80  /vendor/lib64/egl/libGLESv2_angle.so (egl::GlobalMutexHelper::lock(int)+596)
    #02 pc 000000000029c59c  /vendor/lib64/egl/libGLESv2_angle.so (EGL_GetError+32)

    #04 pc 0000000000062368  /system/lib64/libEGL.so (eglQueryString+20)
    #05 pc 0000000000508fec  /data/local/debug/vulkan/libVkLayer_GLES_RenderDoc.so

    #20 pc 0000000000016690  /system/lib64/libvulkan.so (vulkan::api::EnumerateInstanceLayerProperties(unsigned int*, VkLayerProperties*)+40)
    #21 pc 00000000005aa030  /vendor/lib64/egl/libGLESv2_angle.so (rx::RendererVk::initialize(rx::DisplayVk*, egl::Display*, char const*, char const*)+292)
    #26 pc 000000000029c7e8  /vendor/lib64/egl/libGLESv2_angle.so (EGL_Initialize+192)

Additionally, recursive mutex will partially solve Android
SurfaceTexture deadlock (angleproject:4354).

Some performance numbers for 1000'000 `eglGetError()` calls.

    Mutex                                       Time (ms.)

        Android S906B

    egl::GetGlobalMutex()(std::recursive_mutex)    41.4

    (Default)   GlobalMutex (std::recursive_mutex) 39.1

    (Recursive) GlobalMutex (std::mutex)           34.9
    (Debug)     GlobalMutex (std::mutex)           34.7
    (Default)   GlobalMutex (std::mutex)           34.4

        Windows

    egl::GetGlobalMutex()(std::recursive_mutex)    20.5

    (Default)   GlobalMutex (std::recursive_mutex) 20.0

    (Recursive) GlobalMutex (std::mutex)           21.9
    (Debug)     GlobalMutex (std::mutex)           20.5
    (Default)   GlobalMutex (std::mutex)           19.9

Note: Recursive GlobalMutex enabled only for Android Vulkan by default.
Original fix:
    https://chromium-review.googlesource.com/c/angle/angle/+/2029218

Bug: angleproject:8101
Bug: angleproject:4354
Test: angle_unittests --gtest_filter=GlobalMutexTest.*
Change-Id: I9e9d9b5c598ad1177ffa147ea690bd955946a712
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4401940
Commit-Queue: Igor Nazarov <i.nazarov@samsung.com>
Reviewed-by: Charlie Lao <cclao@google.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>

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