kc3-lang/angle

2021-12-10T12:32:58

Reland "system_utils: Add memory protection functionality." This is a reland of b1c703e5f5e44514e8db958a5fb39ff16e514fd8 that was reverted in 663831aa676c59829cc3d822340812f016bf77f6. Skip PageFaultHandlerProtect and PageFaultHandlerDefaultHandler on macOS and Fuchsia. Original change's description: > Reland "system_utils: Add memory protection functionality." > > This is a reland of ab75a90ff4ecb9d99b5c72bde92222b07c285401 > that was reverted in b007e667a8f94b47788a5ba0b2e61c9ac2d1285f. > > Implement PageFaultHandler and memory protection functions. > Uses mprotect and sigaction on POSIX and equivalent Win API functions on > win32. > > Add tests to system_utils_unittests. > > Add stubs for winuwp. > > Replace ASSERT with ASSERT_TRUE in the PageFaultHandlerDefaultHandler > test to make it succeed on release builds, as the code was optimized > out. Furthermore the test did not correctly remove protection from the > whole area it protected, which caused a hang after deinitialization on > some build configurations, since the custom page fault handler was also > still in place. The test now correclty removes protection from the whole > area and sets back the original page fault handler. > > Test: angle_unittests --gtest_filter="SystemUtils.PageFaultHandler*" > Bug: angleproject:5857 > Change-Id: Ibb0acfefd9a09c3360c04c812a2a8346b951e1da > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3322992 > Reviewed-by: Jamie Madill <jmadill@chromium.org> > Commit-Queue: Lubosz Sarnecki <lubosz.sarnecki@collabora.com> Test: angle_unittests --gtest_filter="SystemUtils.PageFaultHandler*" Bug: angleproject:5857 Change-Id: Ifaa966a7c569aa9ff0112897a02fa8f873cd52dd Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3329610 Reviewed-by: Cody Northrop <cnorthrop@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Lubosz Sarnecki <lubosz.sarnecki@collabora.com>