diff options
| author | ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-12-21 09:33:44 +0000 |
|---|---|---|
| committer | ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-12-21 09:33:44 +0000 |
| commit | 87d48d14a0839316f051bddd4d794bdd64e49181 (patch) | |
| tree | fee6b264b9be88a9aab9e93c0bb29ddf93cdc52c /ChangeLog | |
| parent | 94a4bc0ef4165e42ec36c9562ce7a7bcf01ba1cf (diff) | |
* vm_core.h, vm_trace.c: fix multi-threading bug for tracing.
Move `trace_arg' from rb_tp_t::trace_arg to rb_thread_t::trace_arg.
`trace_arg' may changed by multiple threads.
rb_thread_t::trace_arg can represent rb_thread_t::trace_running
(null or non-null) and rb_thread_t::trace_running is removed.
After that, `rb_tp_t' is not needed to check tracing or not
(A running thread knows tracing or not). This is why I remove
tp_attr_check_active() and make new function get_trace_arg().
And this modification disable to work the following code:
TracePoint.trace{|tp|
Thread.new{p tp.event} # access `tp' from other threads.
}
I believe nobody mix threads at trace procedure.
This is current limitation.
* cont.c (fiber_switch, rb_cont_call): use rb_thread_t::trace_arg
instead of rb_thread_t::trace_running.
* test/ruby/test_settracefunc.rb: add a multi-threading test.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38524 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 23 |
1 files changed, 23 insertions, 0 deletions
@@ -1,3 +1,26 @@ +Fri Dec 21 17:48:15 2012 Koichi Sasada <ko1@atdot.net> + + * vm_core.h, vm_trace.c: fix multi-threading bug for tracing. + Move `trace_arg' from rb_tp_t::trace_arg to rb_thread_t::trace_arg. + `trace_arg' may changed by multiple threads. + rb_thread_t::trace_arg can represent rb_thread_t::trace_running + (null or non-null) and rb_thread_t::trace_running is removed. + After that, `rb_tp_t' is not needed to check tracing or not + (A running thread knows tracing or not). This is why I remove + tp_attr_check_active() and make new function get_trace_arg(). + + And this modification disable to work the following code: + TracePoint.trace{|tp| + Thread.new{p tp.event} # access `tp' from other threads. + } + I believe nobody mix threads at trace procedure. + This is current limitation. + + * cont.c (fiber_switch, rb_cont_call): use rb_thread_t::trace_arg + instead of rb_thread_t::trace_running. + + * test/ruby/test_settracefunc.rb: add a multi-threading test. + Fri Dec 21 16:38:08 2012 Nobuyoshi Nakada <nobu@ruby-lang.org> * template/id.h.tmpl (ID2ATTRSET): compile time constant macro for |