Return memory to OS right after free (not in the async thread).
Summary:
In order to avoid starting a separate thread to return unused memory to
the system (the thread interferes with process startup on Android,
Zygota waits for all threads to exit before fork, but this thread never
exits), try to return it right after free.
Reviewers: eugenis
Subscribers: cryptoad, filcab, danalbert, kubabrecka, llvm-commits
Patch by Aleksey Shlyapnikov.
Differential Revision: https://reviews.llvm.org/D27003
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@288091
91177308-0d34-0410-b5e6-
96231b3b80d8
Change-Id: I2e01818bbdf3a0b9f0855b28d963b8016000abc8