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Versions: 15
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Stored size: 1.56 KB
Contents
#include <ruby/ruby.h>
#include <ruby/debug.h>
static VALUE rb_mPlainApm = Qnil;
static VALUE rb_mObjTracing = Qnil;
static __thread uint64_t allocated_objects = 0;
#ifdef OBJECT_TRACING_ENABLED
static int object_tracing_active = 0;
static void track_thread_allocated_objects(VALUE tpval, void *data) {
allocated_objects++;
}
#endif
static VALUE total_thread_allocated_objects(VALUE self) {
return ULL2NUM(allocated_objects);
}
void Init_object_tracing(void) {
rb_mPlainApm = rb_define_module("PlainApm");
rb_gc_register_address(&rb_mPlainApm);
rb_mObjTracing = rb_define_module_under(rb_mPlainApm, "ObjectTracing");
rb_gc_register_address(&rb_mObjTracing);
rb_define_singleton_method(rb_mObjTracing, "total_thread_allocated_objects", total_thread_allocated_objects, 0);
#ifdef OBJECT_TRACING_ENABLED
/* Ensure the tracepoint is attached only once. */
if (object_tracing_active) { return; }
object_tracing_active = 1;
/* Object allocation tracing is impacted by these bugs:
*
* https://bugs.ruby-lang.org/issues/19112 in Rubies 3.x.x
* https://bugs.ruby-lang.org/issues/18464 in Rubies 3.0, 3.1, and 3.2
*
* According to
*
* https://www.ruby-lang.org/en/downloads/branches/
*
* 3.0 goes out of maintenance mid 2024. The latter bug was backported to the
* other branches.
*
* For the former, there's https://github.com/ruby/ruby/pull/7184 open,
* unmerged as of Dec 2023.
*
*/
VALUE tpval = rb_tracepoint_new(0, RUBY_INTERNAL_EVENT_NEWOBJ, track_thread_allocated_objects, NULL);
rb_tracepoint_enable(tpval);
#endif
}
Version data entries
15 entries across 15 versions & 1 rubygems