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| author | 2023-02-01 15:50:58 +0800 | |
|---|---|---|
| committer | 2023-02-06 14:18:01 +0000 | |
| commit | ea2c68d27e583cad5166fced930429f1752fc5aa (patch) | |
| tree | b993c54b3ac0b0f83f26e18c5c8f3df0a71ef5c0 /compiler/optimizing/loop_optimization.h | |
| parent | 6f915c7388797cdaabaf4df2bef3b66413942948 (diff) | |
Avoid using flock on profiles.
After this change, instead of using a flock to ensure atomicity, the
profile is saved as a temporary file and moved to the final location.
Unfortunately, we have to keep the old implementation as a fallback
because the new implementation requires an SELinux policy rule that
allows apps to create profile files, which doesn't exist on old
platforms.
Bug: 249522285
Test: atest art_standalone_libprofile_tests
Test: atest art_standalone_runtime_tests:ProfileCompilationInfoTest
Test: -
1. adb shell am start -S -W -c android.intent.category.LAUNCHER -a android.intent.action.MAIN com.google.android.youtube
2. adb shell killall -USR1 com.google.android.youtube
3. adb shell ls /data/misc/profiles/cur/0/com.google.android.youtube/primary.prof -l
4. See the profile saved and the inode changed.
Test: -
1. Do the same as above on a T device.
2. See the profile saved and the inode not changed.
Change-Id: I02706651c6fbadc013ee595fdb1bc80ad8d27622
Merged-In: I02706651c6fbadc013ee595fdb1bc80ad8d27622
(cherry picked from commit 441b9c57434351c34d418d43c1c5aea78b40a57e)
Diffstat (limited to 'compiler/optimizing/loop_optimization.h')
0 files changed, 0 insertions, 0 deletions