diff options
| author | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-01-04 17:57:29 +0000 |
|---|---|---|
| committer | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-01-04 17:57:29 +0000 |
| commit | 48ff1d417d4c49525c09b013395e38dda8bd50fe (patch) | |
| tree | ffb4ea05f14bc936b5dd3681e19b2aa3cee8c3bf /libgo/runtime/go-callers.c | |
| parent | 144409bbbdb293946cea105115e0e329f633d333 (diff) | |
| download | gcc-48ff1d417d4c49525c09b013395e38dda8bd50fe.tar.gz | |
2014-01-04 Basile Starynkevitch <basile@starynkevitch.net>
{{merge using svnmerge.py with trunk GCC 4.9 svn rev206333 now in
stage 3; very unstable, xtramelt-ana-base don't compile
anymore...}}
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/melt-branch@206336 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libgo/runtime/go-callers.c')
| -rw-r--r-- | libgo/runtime/go-callers.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/libgo/runtime/go-callers.c b/libgo/runtime/go-callers.c index 291dfd0d666..ae411d9c83a 100644 --- a/libgo/runtime/go-callers.c +++ b/libgo/runtime/go-callers.c @@ -11,6 +11,13 @@ #include "runtime.h" #include "array.h" +/* This is set to non-zero when calling backtrace_full. This is used + to avoid getting hanging on a recursive lock in dl_iterate_phdr on + older versions of glibc when a SIGPROF signal arrives while + collecting a backtrace. */ + +uint32 runtime_in_callers; + /* Argument passed to callback function. */ struct callers_data @@ -111,8 +118,10 @@ runtime_callers (int32 skip, Location *locbuf, int32 m) data.skip = skip + 1; data.index = 0; data.max = m; + runtime_xadd (&runtime_in_callers, 1); backtrace_full (__go_get_backtrace_state (), 0, callback, error_callback, &data); + runtime_xadd (&runtime_in_callers, -1); return data.index; } |