f49921ba53
tsan: reorder SyncVar members to reduce contention
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llvm-svn: 204655
2014-03-24 18:51:37 +00:00
781eca5f71
tsan: use read lock instead of write in atomic operations when possible
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llvm-svn: 204654
2014-03-24 18:51:13 +00:00
3df5d87da4
[sanitizer] print threads in deadlock report
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llvm-svn: 204461
2014-03-21 13:00:18 +00:00
7317d9499b
[sanitizer] more human-readable deadlock reports
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llvm-svn: 204454
2014-03-21 11:37:43 +00:00
1296436cbf
[libsanitizer] Introduce flag descriptions.
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Extend ParseFlag to accept the |description| parameter, add dummy values for all existing flags.
As the flags are parsed their descriptions are stored in a global linked list.
The tool can later call __sanitizer::PrintFlagDescriptions() to dump all the flag names and their descriptions.
Add the 'help' flag and make ASan, TSan and MSan print the flags if 'help' is set to 1.
llvm-svn: 204339
2014-03-20 12:52:52 +00:00
d3466b9e5e
tsan: remove unused function declarations
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llvm-svn: 204328
2014-03-20 10:39:46 +00:00
c9e12aa323
tsan: deobfuscate global ctx variable
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llvm-svn: 204327
2014-03-20 10:36:20 +00:00
6e2557769c
tsan: use stack depot for goroutine creation stacks (as C++ threads do)
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llvm-svn: 204326
2014-03-20 10:19:02 +00:00
9cf08c46a6
tsan: remove unused declaration
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llvm-svn: 204324
2014-03-20 10:13:30 +00:00
1af191e1f4
tsan: add test for second_deadlock_stack flag
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llvm-svn: 204240
2014-03-19 15:00:38 +00:00
bbbe6bba8a
tsan: preliminary support for Go deadlock detector
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llvm-svn: 204228
2014-03-19 12:50:47 +00:00
2ea796e05f
[sanitizer] deadlock detector: a) initial support for suppressions, b) be more robust in case we failed to extract a stack trace for one of the locks
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llvm-svn: 204225
2014-03-19 12:26:33 +00:00
3cd028c0b2
tsan: deadlock detector: add deadlock detector flags
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the first flags is to enable printing of the second stack per edge
llvm-svn: 204150
2014-03-18 13:13:47 +00:00
5c0171b811
[sanitizer] a bit more informative deadlock detector report (still lots to improve)
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llvm-svn: 204115
2014-03-18 05:56:14 +00:00
8976539627
[sanitizer] make the deadlock detector print 2*N stack traces on lock-order-inversion with N locks (i.e. print stack traces for both lock acquisitions in every edge in the graph). More improvements to follow
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llvm-svn: 204042
2014-03-17 14:41:36 +00:00
bd7563eee2
[tsan] fox the GO build
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llvm-svn: 204037
2014-03-17 10:37:44 +00:00
b9cb473fb8
[sanitizer] fix build warnings; add an output test for the deadlock detecor
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llvm-svn: 204035
2014-03-17 09:21:41 +00:00
d674e6bdde
[sanitizer] print more stack traces when reporting a deadlock (even more to come)
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llvm-svn: 204034
2014-03-17 09:07:24 +00:00
65dbf46950
[sanitizer] in bitvector-based deadlock detector split onLock into onLockBefore and onLockAfter hooks
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llvm-svn: 203796
2014-03-13 13:21:30 +00:00
13f21af177
[TSan] Hide message about re-execing under verbosity flag
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llvm-svn: 203793
2014-03-13 13:14:19 +00:00
4076b3481a
tsan: add interceptors for fopen64, freopen64, tmpfile, tmpfile64
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llvm-svn: 203647
2014-03-12 08:26:43 +00:00
72a9d25060
[sanitizer] Simplify interceptors with user callbacks.
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Get rid of the context argument in UNPOISON_PARAM and INITIALIZE_RANGE.
Get rid of all the thread-local contexts in interceptors.
llvm-svn: 203119
2014-03-06 13:26:09 +00:00
9b410fb627
tsan: implement new version of standalong deadlock detector
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intercept pthread_cond (it is required to properly track state of mutexes)
detect cycles in mutex graph
llvm-svn: 202975
2014-03-05 13:41:21 +00:00
6dece3c99f
Add common interceptors for memchr/memrchr
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llvm-svn: 202972
2014-03-05 13:25:32 +00:00
975b02ad71
tsan: move all pthread_cond interceptors into sanitizer_common
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llvm-svn: 202813
2014-03-04 10:17:40 +00:00
6cfab724ec
tsan: refactor deadlock detector
...
Introduce DDetector interface between the tool and the DD itself.
It will help to experiment with other DD implementation,
as well as reuse DD in other tools.
llvm-svn: 202485
2014-02-28 10:48:13 +00:00
2ff42d98fa
[sanitizer] do not acquire a global mutex in deadlock detector when dealing with Unlock (it is essentially a thread-local operation)
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llvm-svn: 202401
2014-02-27 14:38:42 +00:00
a12923e265
tsan: intercept vfork
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this fixes obscure false positives
see the comments and the test for details
llvm-svn: 202400
2014-02-27 14:36:16 +00:00
6fd67f9c7a
tsan: fix internal deadlock detector for external deadlock detector
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we must go deeper!
llvm-svn: 202365
2014-02-27 09:02:58 +00:00
9d09e2fe90
Reapply r201910. MSVC gets __func__ defined explicitly, even though it
...
can't build anything here.
llvm-svn: 202297
2014-02-26 20:33:22 +00:00
67968cbf93
[sanitizer] minimal support for recursive locks indeadlock detector
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llvm-svn: 202153
2014-02-25 14:02:01 +00:00
01be296dbb
[sanitizer] support pthread_rwlock_rd* in deadlock detector
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llvm-svn: 202132
2014-02-25 10:33:37 +00:00
fd88edfddb
[sanitizer] partially support pthread_rwlock_* (no rd* form yet)
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llvm-svn: 202128
2014-02-25 09:33:10 +00:00
11f4f30fa7
[sanitizer] add support for try_lock in deadlock detector
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llvm-svn: 202120
2014-02-25 08:24:15 +00:00
6d54611fd4
[sanitizer] fix epoch handling in deadlock detector (before the fix, we could have had edges from locks in the previous epoch to locks in the current epoch)
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llvm-svn: 202118
2014-02-25 07:34:41 +00:00
a661a13c0f
tsan: fix SIGRTMAX handling
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llvm-svn: 202022
2014-02-24 11:28:59 +00:00
cf5d8e4f29
AdjustStackSizeLinux() is used in Lsan, Tsan and Msan non-Linux-specific code so it seems it should have more generic name and moved to a common scope.
...
Renamed to AdjustStackSize.
Patch by Viktor Kutuzov.
llvm-svn: 202011
2014-02-24 08:53:26 +00:00
249cd9af9c
tsan: fix compiler warning
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error: address of array 'tctx->name' will always evaluate to 'true'
llvm-svn: 202008
2014-02-24 08:19:53 +00:00
324eee45a7
Revert "Replace __FUNCTION__ with __func__, the latter being standard C99/C++11."
...
This reverts commit r201910.
While __func__ may be standard in C++11, it was only recently added to
MSVC in 2013 CTP, and LLVM supports MSVC 2012. __FUNCTION__ may not be
standard, but it's *very* portable.
llvm-svn: 201916
2014-02-22 00:37:45 +00:00
b15779f307
Replace __FUNCTION__ with __func__, the latter being standard C99/C++11.
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llvm-svn: 201910
2014-02-21 23:55:15 +00:00
0548c79859
[tsan] add coarse-grained lock around the DeadlockDetector. We can do better than that, but that's a start.
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llvm-svn: 201861
2014-02-21 15:07:18 +00:00
b51f8d4990
[tsan] when printing a mutex, also print its address. Properly print the deadlock report.
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llvm-svn: 201675
2014-02-19 14:17:25 +00:00
37ce26cb16
[sanitizer] when reporting a deadlock also report the lock cycle
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llvm-svn: 201576
2014-02-18 14:56:19 +00:00
bd86a29a2a
[sanitizer] make sure the deadlock detector survives the change of epochs; add a test and a comment
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llvm-svn: 201572
2014-02-18 13:41:49 +00:00
aa416c39cd
[tsan] in deadlock detector do not register locks on their creation and unregister them on destruction; added a relevant test
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llvm-svn: 201568
2014-02-18 12:50:31 +00:00
ec68429c5d
[sanitizer] simplify DeadlockDetectorTLS
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llvm-svn: 201505
2014-02-17 08:47:48 +00:00
a63632a5c6
[tsan] rudimentary support for deadlock detector in tsan (nothing really works yet except for a single tiny test). Also rename tsan's DeadlockDetector to InternalDeadlockDetector
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llvm-svn: 201407
2014-02-14 12:20:42 +00:00
05938a23f5
[sanitizer] Use mmap to zero-fill large shadow regions.
...
This is covered by existing ASan test.
This does not change anything for TSan by default (but provides a flag to
change the threshold size).
Based on a patch by florent.bruneau here:
https://code.google.com/p/address-sanitizer/issues/detail?id=256
llvm-svn: 201400
2014-02-14 11:41:26 +00:00
ce9c449a4d
[TSan] Kill tsan_symbolize_addr2line_linux.cc
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llvm-svn: 201219
2014-02-12 08:37:09 +00:00
7304b4201f
[Sanitizer] Teach external symbolizer to work with addr2line if llvm-symbolizer is unavailable. Allow this mode in TSan.
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llvm-svn: 201218
2014-02-12 08:29:42 +00:00
Dmitry Vyukov