Commit Graph

13 Commits

Author SHA1 Message Date
Alexey Samsonov bb79b06f4e [Sanitizers] Unify the semantics and usage of "exitcode" runtime flag across all sanitizers.
Summary:
Merge "exitcode" flag from ASan, LSan, TSan and "exit_code" from MSan
into one entity. Additionally, make sure sanitizer_common now uses the
value of common_flags()->exitcode when dying on error, so that this
flag will automatically work for other sanitizers (UBSan and DFSan) as
well.

User-visible changes:
* "exit_code" MSan runtime flag is now deprecated. If explicitly
  specified, this flag will take precedence over "exitcode".
  The users are encouraged to migrate to the new version.
* __asan_set_error_exit_code() and __msan_set_exit_code() functions
  are removed. With few exceptions, we don't support changing runtime
  flags during program execution - we can't make them thread-safe.
  The users should use __sanitizer_set_death_callback()
  that would call _exit() with proper exit code instead.
* Plugin tools (LSan and UBSan) now inherit the exit code of the parent
  tool. In particular, this means that ASan would now crash the program
  with exit code "1" instead of "23" if it detects leaks.

Reviewers: kcc, eugenis

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D12120

llvm-svn: 245734
2015-08-21 20:49:37 +00:00
Sergey Matveev cbdd0dc88a [lsan] Add an interface function for on-demand leak checking.
Summary:
Add an interface function which can be used to periodically trigger
leak detection in a long-running process.

NB: The meaning of the kIgnored tag has been changed to allow easy clean-up
between subsequent leak checks. Previously, this tag was applied to explicitly
ignored (i.e. with __lsan_disable() or __lsan_ignore_object()) chunks *and* any
chunks only reachable from those. With this change, it's only applied to
explicitly ignored chunks.

Reviewers: samsonov

Reviewed By: samsonov

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D9159

llvm-svn: 235728
2015-04-24 16:53:15 +00:00
Sergey Matveev 4fedac85ee Revert r235726 "interface"
Accidentally committed from local branch. :(

llvm-svn: 235727
2015-04-24 16:51:21 +00:00
Sergey Matveev a409f28b8e interface
llvm-svn: 235726
2015-04-24 16:49:04 +00:00
Kostya Serebryany 06222915cf [lsan] remove LeakSanitizerIsTurnedOffForTheCurrentProcess (this was a bad idea), leave __lsan_is_turned_off
llvm-svn: 199304
2014-01-15 08:04:21 +00:00
Sergey Matveev 3a47244c94 [lsan] Add __lsan_default_suppressions() to the public interface header.
llvm-svn: 199121
2014-01-13 17:26:57 +00:00
Kostya Serebryany 27f5b8800d [lsan] rename __lsan_is_turned_off to LeakSanitizerIsTurnedOffForTheCurrentProcess (leave the old variant for now for compatibility)
llvm-svn: 198921
2014-01-10 07:58:25 +00:00
Sergey Matveev 7237879926 [lsan] Introduce __lsan_(un)register_root_region().
Add an interface for telling LSan that a region of memory is to be treated as a
source of live pointers. Useful for code which stores pointers in mapped memory.

llvm-svn: 197489
2013-12-17 11:11:23 +00:00
Alexey Samsonov b42ea7ef21 Lint fixes
llvm-svn: 187726
2013-08-05 13:20:39 +00:00
Sergey Matveev 655bd0d08c [lsan] Add __lsan_do_leak_check() to the public interface.
Let users override the normal behavior to run leak checking earlier in
the process. Also fix a couple nits here and there.

llvm-svn: 186581
2013-07-18 14:06:07 +00:00
Alexey Samsonov 895784a5b0 [LSan] Add the way to disable LSan at link time
llvm-svn: 185066
2013-06-27 09:35:50 +00:00
Sergey Matveev ecc4f5ba8e [lsan] Implement __lsan_ignore_object().
Leak annotation similar to HeapChecker's IgnoreObject().

llvm-svn: 183412
2013-06-06 14:17:56 +00:00
Sergey Matveev 17ee1abfa7 [lsan] Add __lsan_disable() and __lsan_enable().
Objects allocated after a call to __lsan_disable() will be treated as
live memory. Also add a ScopedDisabler.

llvm-svn: 183099
2013-06-03 11:21:34 +00:00