are imemo objects (imemo_env).
* NEWS: describe this change. I believe nobody touch these objects
because there are no method defined.
* vm_core.h: remove the following definitions.
* rb_cEnv decl.
* GetEnvPtr() because Env is no longer T_DATA object.
* vm_core.h (rb_env_t): fix layout for imemo values.
* vm_core.h (vm_assert_env): added.
* vm_core.h (vm_env_new): added.
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[Bug #12628]
This patch introduce many changes.
* Introduce concept of "Block Handler (BH)" to represent
passed blocks.
* move rb_control_frame_t::flag to ep[0] (as a special local
variable). This flags represents not only frame type, but also
env flags such as escaped.
* rename `rb_block_t` to `struct rb_block`.
* Make Proc, Binding and RubyVM::Env objects wb-protected.
Check [Bug #12628] for more details.
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* vm_dump.c (vm_stack_dump_each): remove never-used variable and
dead code for it.
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* configure.in: check for libunwind.h, which is not available in
very old OS X SDK. [ruby-core:71080] [Bug #11591]
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All contents of previous rb_iseq_t is in rb_iseq_t::body.
Remove rb_iseq_t::self because rb_iseq_t is an object.
RubyVM::InstructionSequence is wrapper object points T_IMEMO/iseq.
So RubyVM::ISeq.of(something) method returns different wrapper
objects but they point the same T_IMEMO/iseq object.
This patch is big, but most of difference is replacement of
iseq->xxx to iseq->body->xxx.
(previous) rb_iseq_t::compile_data is also located to
rb_iseq_t::compile_data.
It was moved from rb_iseq_body::compile_data.
Now rb_iseq_t has empty two pointers.
I will split rb_iseq_body data into static data and dynamic data.
* compile.c: rename some functions/macros.
Now, we don't need to separate iseq and iseqval (only VALUE).
* eval.c (ruby_exec_internal): `n' is rb_iseq_t (T_IMEMO/iseq).
* ext/objspace/objspace.c (count_imemo_objects): count T_IMEMO/iseq.
* gc.c: check T_IMEMO/iseq.
* internal.h: add imemo_type::imemo_iseq.
* iseq.c: define RubyVM::InstructionSequnce as T_OBJECT.
Methods are implemented by functions named iseqw_....
* load.c (rb_load_internal0): rb_iseq_new_top() returns
rb_iseq_t (T_IMEMO/iesq).
* method.h (rb_add_method_iseq): accept rb_iseq_t (T_IMEMO/iseq).
* vm_core.h (GetISeqPtr): removed because it is not T_DATA now.
* vm_core.h (struct rb_iseq_body): remove padding for
[Bug #10037][ruby-core:63721].
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via env->ep.
rb_vm_env_prev_envval(env) returns prev_envval via env->ep.
* vm_core.h (rb_vm_env_local_variables): change parameter type
from VALUE (T_DATA/env) to `const rb_env_t *' to make same as
rb_vm_env_prev_envval().
* proc.c: catch up these changes.
* vm_dump.c: ditto.
* vm.c: rename macros.
* ENV_IN_HEAP_P() to VM_EP_IN_HEAP_P() because it uses ep.
* ENV_VAL() to VM_ENV_EP_ENVVAL() because it is too short.
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* vm_core.h: remove blockprocval field from rb_proc_t and rb_binding_t.
Instead of this field, mark given block in Proc at rb_env_t::env.
* vm.c (vm_make_env_each): make an Env object with this layout.
And also simplify parameters.
* proc.c: catch up this fix.
* vm_core.h: remove rb_env_t::local_size because it is not used.
* vm_dump.c (rb_vmdebug_env_dump_raw): catch up this fix.
* vm_core.h (rb_vm_make_env_object): remove rb_vm_make_env_object()
because it is only refered from vm.c.
* vm_eval.c (eval_string_with_cref): catch up this fix.
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rb_control_frame_t::klass.
[Bug #11278], [Bug #11279]
rb_method_entry_t data belong to modules/classes.
rb_method_entry_t::owner points defined module or class.
module M
def foo; end
end
In this case, owner is M.
rb_callable_method_entry_t data belong to only classes.
For modules, MRI creates corresponding T_ICLASS internally.
rb_callable_method_entry_t can also belong to T_ICLASS.
rb_callable_method_entry_t::defined_class points T_CLASS or
T_ICLASS.
rb_method_entry_t data for classes (not for modules) are also
rb_callable_method_entry_t data because it is completely same data.
In this case, rb_method_entry_t::owner == rb_method_entry_t::defined_class.
For example, there are classes C and D, and incldues M,
class C; include M; end
class D; include M; end
then, two T_ICLASS objects for C's super class and D's super class
will be created.
When C.new.foo is called, then M#foo is searcheed and
rb_callable_method_t data is used by VM to invoke M#foo.
rb_method_entry_t data is only one for M#foo.
However, rb_callable_method_entry_t data are two (and can be more).
It is proportional to the number of including (and prepending)
classes (the number of T_ICLASS which point to the module).
Now, created rb_callable_method_entry_t are collected when
the original module M was modified. We can think it is a cache.
We need to select what kind of method entry data is needed.
To operate definition, then you need to use rb_method_entry_t.
You can access them by the following functions.
* rb_method_entry(VALUE klass, ID id);
* rb_method_entry_with_refinements(VALUE klass, ID id);
* rb_method_entry_without_refinements(VALUE klass, ID id);
* rb_resolve_refined_method(VALUE refinements, const rb_method_entry_t *me);
To invoke methods, then you need to use rb_callable_method_entry_t
which you can get by the following APIs corresponding to the
above listed functions.
* rb_callable_method_entry(VALUE klass, ID id);
* rb_callable_method_entry_with_refinements(VALUE klass, ID id);
* rb_callable_method_entry_without_refinements(VALUE klass, ID id);
* rb_resolve_refined_method_callable(VALUE refinements, const rb_callable_method_entry_t *me);
VM pushes rb_callable_method_entry_t, so that rb_vm_frame_method_entry()
returns rb_callable_method_entry_t.
You can check a super class of current method by
rb_callable_method_entry_t::defined_class.
* method.h: renamed from rb_method_entry_t::klass to
rb_method_entry_t::owner.
* internal.h: add rb_classext_struct::callable_m_tbl to cache
rb_callable_method_entry_t data.
We need to consider abotu this field again because it is only
active for T_ICLASS.
* class.c (method_entry_i): ditto.
* class.c (rb_define_attr): rb_method_entry() does not takes
defiend_class_ptr.
* gc.c (mark_method_entry): mark RCLASS_CALLABLE_M_TBL() for T_ICLASS.
* cont.c (fiber_init): rb_control_frame_t::klass is removed.
* proc.c: fix `struct METHOD' data structure because
rb_callable_method_t has all information.
* vm_core.h: remove several fields.
* rb_control_frame_t::klass.
* rb_block_t::klass.
And catch up changes.
* eval.c: catch up changes.
* gc.c: ditto.
* insns.def: ditto.
* vm.c: ditto.
* vm_args.c: ditto.
* vm_backtrace.c: ditto.
* vm_dump.c: ditto.
* vm_eval.c: ditto.
* vm_insnhelper.c: ditto.
* vm_method.c: ditto.
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Motivation and new data structure are described in [Bug #11203].
This patch also solve the following issues.
* [Bug #11200] Memory leak of method entries
* [Bug #11046] __callee__ returns incorrect method name in orphan
proc
* test/ruby/test_method.rb: add a test for [Bug #11046].
* vm_core.h: remvoe rb_control_frame_t::me. me is located at value
stack.
* vm_core.h, gc.c, vm_method.c: remove unlinked_method... codes
because method entries are simple VALUEs.
* method.h: Now, all method entries has own independent method
definititons. Strictly speaking, this change is not essential,
but for future changes.
* rb_method_entry_t::flag is move to rb_method_definition_t::flag.
* rb_method_definition_t::alias_count is now
rb_method_definition_t::alias_count_ptr, a pointer to the counter.
* vm_core.h, vm_insnhelper.c (rb_vm_frame_method_entry) added to
search the current method entry from value stack.
* vm_insnhelper.c (VM_CHECK_MODE): introduced to enable/disable
assertions.
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* vm_dump.c (preface_dump): move the statement to include crash
report log file from REPORTBUG_MSG in error.c.
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* vm_dump.c (preface_dump): highlight very important but very
ofhen ignored message like a Xmas tree.
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* configure.in: check also procstat_getvmmap, which is not
available on FreeBSD 9. [ruby-core:68468] [Bug #10954]
* vm_dump.c (procstat_vm): use kinfo_getvmmap instead if
procstat_getvmmap is not available.
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* vm_dump.c (rb_vm_bugreport): get rid of making new strings
inside signal context.
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* vm_dump.c (rb_vm_bugreport): check by configured result instead
of system name for old FreeBSD. based on a patch by Steve Wills
at [ruby-core:67655]. [Bug #10752]
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https://bugs.ruby-lang.org/issues/10440#change-49694
* change terminology `arg' to `param'.
* move rb_iseq_t::arg_* to rb_iseq_t::param.
* move rb_iseq_t::arg_size to rb_iseq_t::param::size.
* move rb_iseq_t::argc to rb_iseq_t::param::lead_num.
* move rb_iseq_t::arg_opts to rb_iseq_t::param::opt_num.
* move rb_iseq_t::arg_rest to rb_iseq_t::param::rest_start.
* move rb_iseq_t::arg_post_num to rb_iseq_t::param::post_num.
* move rb_iseq_t::arg_post_start to rb_iseq_t::param::post_start.
* move rb_iseq_t::arg_block to rb_iseq_t::param::block_start.
* move rb_iseq_t::arg_keyword* to rb_iseq_t::param::keyword.
rb_iseq_t::param::keyword is allocated only when keyword
parameters are available.
* introduce rb_iseq_t::param::flags to represent parameter
availability. For example, rb_iseq_t::param:🎏:has_kw
represents that this iseq has keyword parameters and
rb_iseq_t::param::keyword is allocated.
We don't need to compare with -1 to check availability.
* remove rb_iseq_t::arg_simple.
* compile.c: catch up this change.
* iseq.c: ditto.
* proc.c: ditto.
* vm.c, vm_args.c, vm_dump.c, vm_insnhelper.c: ditto.
* iseq.c (iseq_data_to_ary): support keyword argument.
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* error.c (rb_bug_context): new function to report bug with
context.
* vm_dump.c (rb_vm_bugreport): accepts `ucontext_t` argument to
dump machine regisiters. based on [GH-584].
* signal.c (sigbus, sigsegv): dump machine regisiters if available.
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* vm_dump.c (backtrace): adjust style, inserting breaks between
type, function name with its arguments, and its body.
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the basis of base addresses comparison.
* addr2line.c: use uintptr_t instead of intptr_t for poinrters.
* addr2line.c (rb_dump_backtrace_with_lines): don't use syms.
* vm_dump.c (rb_print_backtrace): ditto.
* addr2line.h: ditto.
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* vm_dump.c (rb_vmdebug_debug_print_pre): suppress warning on a
platform ptrdiff_t is shorter than long int.
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PC is cached into local stack and cfp->pc is incorrent at next of
branch or jump.
* vm_exec.h (DEBUG_ENTER_INSN): catch up this change.
* vm_core.h: update signature of rb_vmdebug_debug_print_pre.
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beyond signal trampoline, and as described in r38342 it can't
trace on -O because it see stack frame pointers.
libunwind unw_backtrace see dwarf information in the binary
and it works with -O (without frame pointers).
* configure.in: remove r38342's hack and check libunwind.
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* vm_dump.c (rb_vm_bugreport): show the most important message, Crash
Report log information, first.
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in order to avoid segv. anyone can fix addr2line?
[Bug #7597] [ruby-dev:46786]
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At least on FreeBSD ruby will crash on getting C backtrace
when it is compiled with other than -O0.
* vm_dump.c: enable backtrace on FreeBSD even if with optimizations.
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