llvm-project

Commit Graph

Author	SHA1	Message	Date
Dmitry Vyukov	bde4c9c773	tsan: refactor storage of meta information for heap blocks and sync objects The new storage (MetaMap) is based on direct shadow (instead of a hashmap + per-block lists). This solves a number of problems: - eliminates quadratic behaviour in SyncTab::GetAndLock (https://code.google.com/p/thread-sanitizer/issues/detail?id=26) - eliminates contention in SyncTab - eliminates contention in internal allocator during allocation of sync objects - removes a bunch of ad-hoc code in java interface - reduces java shadow from 2x to 1/2x - allows to memorize heap block meta info for Java and Go - allows to cleanup sync object meta info for Go - which in turn enabled deadlock detector for Go llvm-svn: 209810	2014-05-29 13:50:54 +00:00
Alexey Samsonov	e6a6183e9b	Move TSan lit-tests under test/tsan llvm-svn: 201414	2014-02-14 14:35:48 +00:00
Dmitry Vyukov	ce3721057d	tsan: remove in_rtl counter This is intended to address the following problem. Episodically we see CHECK-failures when recursive interceptors call back into user code. Effectively we are not "in_rtl" at this point, but it's very complicated and fragile to properly maintain in_rtl property. Instead get rid of it. It was used mostly for sanity CHECKs, which basically never uncover real problems. Instead introduce ignore_interceptors flag, which is used in very few narrow places to disable recursive interceptors (e.g. during runtime initialization). llvm-svn: 197979	2013-12-24 12:55:56 +00:00

Author

SHA1

Message

Date

Dmitry Vyukov

bde4c9c773

tsan: refactor storage of meta information for heap blocks and sync objects

The new storage (MetaMap) is based on direct shadow (instead of a hashmap + per-block lists).
This solves a number of problems:
 - eliminates quadratic behaviour in SyncTab::GetAndLock (https://code.google.com/p/thread-sanitizer/issues/detail?id=26)
 - eliminates contention in SyncTab
 - eliminates contention in internal allocator during allocation of sync objects
 - removes a bunch of ad-hoc code in java interface
 - reduces java shadow from 2x to 1/2x
 - allows to memorize heap block meta info for Java and Go
 - allows to cleanup sync object meta info for Go
 - which in turn enabled deadlock detector for Go

llvm-svn: 209810

2014-05-29 13:50:54 +00:00

Alexey Samsonov

e6a6183e9b

Move TSan lit-tests under test/tsan

llvm-svn: 201414

2014-02-14 14:35:48 +00:00

Dmitry Vyukov

ce3721057d

tsan: remove in_rtl counter

This is intended to address the following problem.
Episodically we see CHECK-failures when recursive interceptors call back into user code. Effectively we are not "in_rtl" at this point, but it's very complicated and fragile to properly maintain in_rtl property. Instead get rid of it. It was used mostly for sanity CHECKs, which basically never uncover real problems.
Instead introduce ignore_interceptors flag, which is used in very few narrow places to disable recursive interceptors (e.g. during runtime initialization).

llvm-svn: 197979

2013-12-24 12:55:56 +00:00

3 Commits