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authorko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-11-14 12:58:36 +0000
committerko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-11-14 12:58:36 +0000
commit665ba24b446971fdf652a9c57c32b176d0018636 (patch)
tree31357897b60fbef63947d89ad7cd0f0ae95025bc /NEWS
parentfe3decb2017af2092d4b2181e27e4cd8f6bbf4fa (diff)
remove `trace` instruction. [Feature #14104]
* tool/instruction.rb: create `trace_` prefix instructions. * compile.c (ADD_TRACE): do not add `trace` instructions but add TRACE link elements. TRACE elements will be unified with a next instruction as instruction information. * vm_trace.c (update_global_event_hook): modify all ISeqs when hooks are enabled. * iseq.c (rb_iseq_trace_set): added to toggle `trace_` instructions. * vm_insnhelper.c (vm_trace): added. This function is a body of `trace_` prefix instructions. * vm_insnhelper.h (JUMP): save PC to a control frame. * insns.def (trace): removed. * vm_exec.h (INSN_ENTRY_SIG): add debug output (disabled). git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60763 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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@@ -264,6 +264,9 @@ with all sufficient information, see the ChangeLog file or Redmine
* Performance of block passing using block parameters is improved by
lazy Proc allocation [Feature #14045]
+* Dynamic instrumentation for TracePoint hooks instead of using "trace"
+ instruction to avoid overhead [Feature #14104]
+
=== Miscellaneous changes
* Print backtrace and error message in reverse order if STDERR is unchanged and a tty.