diff options
| author | Shilei Tian <tianshilei1992@gmail.com> | 2020-07-22 22:48:53 -0400 |
|---|---|---|
| committer | Shilei Tian <tianshilei1992@gmail.com> | 2020-07-22 22:55:34 -0400 |
| commit | 9b2832c0897c1d39846eee0ad84bf787f05d2d4b (patch) | |
| tree | ec844334e5a98f24fc678baa4104733a1beb13b9 /llvm/lib/Bitcode/Reader/BitcodeAnalyzer.cpp | |
| parent | c4cf250c5bab4eaa5cb9e8e1836bfb709a98e7e7 (diff) | |
[OpenMP] Wait for kernel prior to memory deallocation
Summary:
In the function `target`, memory deallocation and `target_data_end` is called
immediately returning from launching kernel. This might cause a race condition
that the corresponding memory is still being used by the kernel and a potential
issue that when the kernel starts to execute, its required data have already
been deallocated, especially when multiple kernels running concurrently. Since
nevertheless, we will block the thread issuing the target offloading at the end
of the target, we just move the synchronization ahead a little bit to make sure
the correctness.
Reviewers: jdoerfert
Reviewed By: jdoerfert
Subscribers: yaxunl, guansong, sstefan1, openmp-commits
Tags: #openmp
Differential Revision: https://reviews.llvm.org/D84381
Diffstat (limited to 'llvm/lib/Bitcode/Reader/BitcodeAnalyzer.cpp')
0 files changed, 0 insertions, 0 deletions