| commit | c02307527f76d3f6edb49f6e89b1356287d730d5 | |
| author | Rodrigo Kumpera <kumpera@gmail.com> | |
| Thu, 10 Sep 2015 18:48:14 +0000 (10 14:48 -0400) | ||
| committer | Rodrigo Kumpera <kumpera@gmail.com> | |
| Thu, 10 Sep 2015 18:56:19 +0000 (10 14:56 -0400) | ||
| tree | a2667ff7f52b57400486d31b267265839925c2ed | treesnapshot (tar.gz zip) |
| parent | e82dc9b80ae76784f6e17d2d465e1b7e880a0982 | commitdiff |
[suspend] Wrap mmap and unmmap around critical sections to better handle library interposing. Fixes #19379
Instruments uses library interposing to record calls to mmap and munmap. It does take lock within the interposers
which means the async suspend could suspend a thread holding such lock while sgen tries to mmap more memory in,
causing a deadlock.
The workaround is to protect our uses of mmap and munmap in the hopes that they are enough to reduce the likelihood
of those hangs happening.
Instruments uses library interposing to record calls to mmap and munmap. It does take lock within the interposers
which means the async suspend could suspend a thread holding such lock while sgen tries to mmap more memory in,
causing a deadlock.
The workaround is to protect our uses of mmap and munmap in the hopes that they are enough to reduce the likelihood
of those hangs happening.
| mono/utils/mono-mmap.c | diffblobblamehistory |