When Ruby is built with `--with-modular-gc`, the default GC module is
built with `BUILDING_MODULAR_GC` defined.
The existing code stubbed out `probes.h` and `RUBY_DTRACE_GC_HOOK` in
this build path, so any DTrace script attached against the modular
default GC saw zero GC events.
This PR enables the GC probes in the modular GC library so they fire
when Ruby is built with `--enable-dtrace --with-modular-gc`
To test: build with `./configure --enable-dtrace
--with-modular-gc=/tmp/modgc`, then `make install-modular-gc
MODULAR_GC=default`.
Probes are present in the shared library:
```console
$ sudo bpftrace -l 'usdt:/tmp/modgc/librubygc.default.so:ruby:*'
usdt:/tmp/modgc/librubygc.default.so:ruby:gc__mark__begin
usdt:/tmp/modgc/librubygc.default.so:ruby:gc__mark__end
usdt:/tmp/modgc/librubygc.default.so:ruby:gc__sweep__begin
usdt:/tmp/modgc/librubygc.default.so:ruby:gc__sweep__end
```
They fire under a GC-heavy workload (`test.rb` contains `100000.times { Object.new }; GC.start`):
```console
$ sudo bpftrace -e '
usdt:/tmp/modgc/librubygc.default.so:ruby:gc__mark__begin { @mark_begin++ }
usdt:/tmp/modgc/librubygc.default.so:ruby:gc__mark__end { @mark_end++ }
usdt:/tmp/modgc/librubygc.default.so:ruby:gc__sweep__begin { @sweep_begin++ }
usdt:/tmp/modgc/librubygc.default.so:ruby:gc__sweep__end { @sweep_end++ }
' -c 'env RUBY_GC_LIBRARY=default ./miniruby --disable=gems test.rb'
@mark_begin: 2
@mark_end: 2
@sweep_begin: 18
@sweep_end: 18
```
"TracePoint.enable" is implemented in prelude.rb since
r66003 / commit 96990203b7
and not available in miniruby. I tried using regular "ruby"
for testing, but it proved noisy and caused test failures.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66336 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
These will help us track down test failures more easily
(on FreeBSD 11.2)
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66335 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
For the current cases, a few string substitions is enough to
make dtrace(1) scripts work with stap(1). For more complex
scripts (maybe in the future), we may pass a hash with
implementation-specific scripts.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63581 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Since [Feature #14104], "trace" instructions are no
longer emitted by default, so we must enable them explicitly
for function tracing to work.
[ruby-core:85965]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63580 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Don't output method cache clearing at startup since
it causes dtrace to drop output and break the test.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63579 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Nowadays we create empty arrays in the parse/compile
phase which gave us lineno==0.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63578 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
RbConfig::TOPDIR points to my installation prefix on my FreeBSD
and GNU/Linux systems, so there's no way miniruby exists, there.
In case we don't have miniruby, --disable=gems anyways to reduce
dtrace overhead.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63577 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/dtrace/helper.rb (DTrace::TestCase::READ_PROBES): wait
the spawned command not to make a waiter thread. fix up r55736.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55762 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/dtrace/helper.rb (DTrace::TestCase#trap_probe): suppress
an extra empty line to the controlling tty by dtrace on Darwin.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55736 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/dtrace/helper.rb (DTrace::TestCase#trap_probe): ruby-runner
cannot be the target of dtrace, use miniruby instead.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55735 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
When you change this to true, you may need to add more tests.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53141 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* vm_method.c (rb_clear_method_cache_by_class): fire
ruby::method-cache-clear probe on global or klass-level method cache
clear [Bug #9190]
* probes.d (provider ruby): new dtrace probe
* doc/dtrace_probes.rdoc: docs for new probe
* test/dtrace/test_method_cache.rb: test for new probe
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44103 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
class variable. use test/unit instead of minitest/autorun. dispose
`Interrupted system call' error messages at parallel test.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40630 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
path without caching the computed path. Some classes are frozen, and
will raise an exception without this.
* probes.d (cmethod-entry, cmethod-return): separate cmethods from
regular methods to match set trace func.
* probes_helper.h: refactor macros. Fix probes to avoid calling
#inspect when profiling.
* insns.def: update for use with new macros.
* vm_eval.c: ditto
* vm_insnhelper.c: ditto
* test/dtrace/test_singleton_function.rb: fix test for new output.
* test/dtrace/test_cmethod.rb: test the cmethod probes.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38099 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* probes_helper.h: look up klass and method if none are provided.
* eval.c: update macro usage.
* vm_eval.c: ditto.
* vm_insnhelper.c: ditto.
* test/dtrace/test_function_entry.rb: test for change.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38001 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* array.c (empty_ary_alloc, ary_new): added array create DTrace probe.
* compile.c (rb_insns_name): allowing DTrace probes to access
instruction sequence name.
* Makefile.in: translate probes.d file to appropriate header file.
* common.mk: declare dependencies on the DTrace header.
* configure.in: add a test for existence of DTrace.
* eval.c (setup_exception): add a probe for when an exception is
raised.
* gc.c: Add DTrace probes for mark begin and end, and sweep begin and
end.
* hash.c (empty_hash_alloc): Add a probe for hash allocation.
* insns.def: Add probes for function entry and return.
* internal.h: function declaration for compile.c change.
* load.c (rb_f_load): add probes for `load` entry and exit, require
entry and exit, and wrapping search_required for load path search.
* object.c (rb_obj_alloc): added a probe for general object creation.
* parse.y (yycompile0): added a probe around parse and compile phase.
* string.c (empty_str_alloc, str_new): DTrace probes for string
allocation.
* test/dtrace/*: tests for DTrace probes.
* vm.c (vm_invoke_proc): add probes for function return on exception
raise, hash create, and instruction sequence execution.
* vm_core.h: add probe declarations for function entry and exit.
* vm_dump.c: add probes header file.
* vm_eval.c (vm_call0_cfunc, vm_call0_cfunc_with_frame): add probe on
function entry and return.
* vm_exec.c: expose instruction number to instruction name function.
* vm_insnshelper.c: add function entry and exit probes for cfunc
methods.
* vm_insnhelper.h: vm usage information is always collected, so
uncomment the functions.
12 19:14:50 2012 Akinori MUSHA <knu@iDaemons.org>
* configure.in (isinf, isnan): isinf() and isnan() are macros on
DragonFly which cannot be found by AC_REPLACE_FUNCS(). This
workaround enforces the fact that they exist on DragonFly.
12 15:59:38 2012 Shugo Maeda <shugo@ruby-lang.org>
* vm_core.h (rb_call_info_t::refinements), compile.c (new_callinfo),
vm_insnhelper.c (vm_search_method): revert r37616 because it's too
slow. [ruby-dev:46477]
* test/ruby/test_refinement.rb (test_inline_method_cache): skip
the test until the bug is fixed efficiently.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37631 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Matt Valentine-House