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* include/ruby/ruby.h, gc.c, vm_trace.c: add internal events.

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* RUBY_INTERNAL_EVENT_NEWOBJ: object created.
* RUBY_INTERNAL_EVENT_FREE: object freeed.
* RUBY_INTERNAL_EVENT_GC_START: GC started.
  And rename `RUBY_EVENT_SWITCH' to `RUBY_INTERNAL_EVENT_SWITCH'.
  Internal events can not invoke any Ruby program because the tracing
  timing may be critical (under huge restriction).
  These events can be hooked only by C-extensions.
  We recommend to use rb_potponed_job_register() API to call Ruby
  program safely.
  This change is mostly written by Aman Gupta (tmm1).
  https://bugs.ruby-lang.org/issues/8107#note-12
  [Feature #8107]
* include/ruby/debug.h, vm_trace.c: added two new APIs.
* rb_tracearg_event_flag() returns rb_event_flag_t of this event.
* rb_tracearg_object() returns created/freeed object.
* ext/-test-/tracepoint/extconf.rb,
  ext/-test-/tracepoint/tracepoint.c,
  test/-ext-/tracepoint/test_tracepoint.rb: add a test.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40946 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
ko1 2013-05-27 00:21:02 +00:00
parent dc7522f835
commit 680f0b5ba4
10 changed files with 207 additions and 11 deletions
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65
ext/-test-/tracepoint/tracepoint.c Normal file
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#include "ruby/ruby.h"
#include "ruby/debug.h"
static size_t newobj_count;
static size_t free_count;
static size_t gc_start_count;
static size_t objects_count;
static VALUE objects[10];
void
tracepoint_track_objspace_events_i(VALUE tpval, void *data)
{
rb_trace_arg_t *tparg = rb_tracearg_from_tracepoint(tpval);
switch (rb_tracearg_event_flag(tparg)) {
case RUBY_INTERNAL_EVENT_NEWOBJ:
{
VALUE obj = rb_tracearg_object(tparg);
if (objects_count < sizeof(objects)/sizeof(VALUE)) objects[objects_count++] = obj;
newobj_count++;
break;
}
case RUBY_INTERNAL_EVENT_FREE:
{
free_count++;
break;
}
case RUBY_INTERNAL_EVENT_GC_START:
{
gc_start_count++;
break;
}
default:
rb_raise(rb_eRuntimeError, "unknown event");
}
}
VALUE
tracepoint_track_objspace_events(VALUE self)
{
VALUE tpval = rb_tracepoint_new(0, RUBY_INTERNAL_EVENT_NEWOBJ | RUBY_INTERNAL_EVENT_FREE | RUBY_INTERNAL_EVENT_GC_START, tracepoint_track_objspace_events_i, 0);
VALUE result = rb_ary_new();
int i;
newobj_count = free_count = gc_start_count = objects_count = 0;
rb_tracepoint_enable(tpval);
rb_yield(Qundef);
rb_tracepoint_disable(tpval);
rb_ary_push(result, SIZET2NUM(newobj_count));
rb_ary_push(result, SIZET2NUM(free_count));
rb_ary_push(result, SIZET2NUM(gc_start_count));
for (i=0; i<objects_count; i++) {
rb_ary_push(result, objects[i]);
}
return result;
}
void
Init_tracepoint(void)
{
VALUE mBug = rb_define_module("Bug");
rb_define_module_function(mBug, "tracepoint_track_objspace_events", tracepoint_track_objspace_events, 0);
}