unnecessary fibers and retry to create. based on a patch from
masaya tarui at [ruby-dev:41230].
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on Windows because Fiber APIs are supported only such building
(and running) environments.
[ruby-dev:41192]
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Fiber context switching cost using system APIs. Detail comments
are written in cont.c.
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added. Unlinked method entries are collected to
vm->unlinked_method_entry_list. On the GC timing, mark all method
entries which are on all living threads. Only non-marked method
entries are collected. This hack prevents releasing living method
entry.
[Performance Consideration] Since this Method Entry GC (MEGC)
doesn't occuer frequently, MEGC will not be a performance bottleneck.
However, to traverse living method entries, every control frame push
needs to clear cfp->me field. This will be a performance issue
(because pushing control frame is occurred frequently).
Bug #2777 [ruby-dev:40457]
* cont.c (fiber_init): init cfp->me.
* gc.c (garbage_collect): kick rb_sweep_method_entry().
* method.h (rb_method_entry_t): add a mark field.
* vm.c (invoke_block_from_c): set passed me.
* vm.c (rb_thread_mark): mark cfp->me.
* vm_core.h (rb_thread_t): add a field passed_me.
* vm_core.h (rb_vm_t): add a field unlinked_method_entry_list.
* vm_insnhelper.c (vm_push_frame): clear cfp->me at all times.
* vm_insnhelper.c (vm_call_bmethod): pass me.
* bootstraptest/test_method.rb: add a test.
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it seems not to make sense. [ruby-dev:40121]
* vm_core.h, eval.c (rb_protect): ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26407 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* cont.c (cont_init): clear local_storage not to use current thread's.
* cont.c (fiber_t_alloc, root_fiber_alloc): link itself always for
a case that fiber_link_remove() is called before fiber_link_join().
* cont.c (fiber_init): clear cont->vm_stack and th->stack before
root_fiber_alloc() in rb_fiber_current().
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25631 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* cont.c (cont_init): clear local_storage not to use current thread's.
* cont.c (fiber_t_alloc, root_fiber_alloc): link itself always for
a case that fiber_link_remove() is called before fiber_link_join().
* cont.c (fiber_init): don't join half-baked fiber.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25623 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* cont.c (fiber_switch): transfers dead fiber error to the previouse
or root fiber if the current fiber is dead. [ruby-core:23651]
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[ruby-dev:37991]
* test/ruby/test_fiber.rb: add a test for Fiber#alive?
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of #elif. a patch from NISHIMATSU Takeshi <t_nissie at yahoo.co.jp>
in [ruby-list:45856].
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vm_get_ruby_level_next_cfp(), rb_vm_make_env_object(),
vm_stack_to_heap(), vm_make_proc(), vm_invoke_proc(),
vm_get_sourceline(), vm_cref(), vm_localjump_error(),
vm_make_jump_tag_but_local_jump(), vm_jump_tag_but_local_jump().
This changes may affect only core because most of renamed functions
require a pointer of not-exposed struct such as rb_thread_t or NODE.
In short, they are core functions.
* cont.c, eval.c, eval_intern.h, load.c, proc.c, thread.c,
vm_core.h, vm_dump.c, vm_eval.c, vm_exec.c, vm_insnhelper.c:
ditto.
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vm_insnhelper.h (BOP): ISO C forbids comma at end of enumerator
list.
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rb_context_t (rb_fiber_t includes rb_context_t).
rb_fiber_t has double linked list of fibers in same threads.
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RUBY_VM_SET_TIMER_INTERRUPT(), RUBY_VM_INTERRUPTED().
* thread.c, thread_pthread.c, thread_win32.c: fix to ignore time slice
event until sleep.
* bootstraptest/test_thread.rb: add a test for time limited join test.
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suppress warnings.
* cont.c (rb_fiber_start): change on non-volatile variable between
setjmp and longjmp may not has an effect.
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and Fiber::Core class to realize Coroutine.
* include/ruby/intern.h: declare rb_fiber_yield(), rb_fiber_resume(),
* enumerator.c: use above api.
* test/ruby/test_fiber.rb: fix and add tests for above changes.
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* cont.c (rb_fiber_current): export
* include/ruby/intern.h: export several functions from cont.c.
* enumerator.c (enumerator_next): new method to implement external
iterator (generator) using fiber.
* enumerator.c (enumerator_next_p): new method to check whether
any element is left in the generator sequence.
* enumerator.c (enumerator_rewind): a new method to rewind the
generator sequence.
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* gc.h (SET_MACHINE_STACK_END): new macro to replace
rb_gc_set_stack_end. it find out accurate stack boundary by
asm using gcc on x86.
* thread.c (rb_gc_set_stack_end): don't define if asm-version
SET_MACHINE_STACK_END is available.
* gc.c (mark_current_thread): extracted from garbage_collect.
it use SET_MACHINE_STACK_END to not scan out of stack area.
it notify conservative GC information to valgrind if
--enable-valgrind.
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* yarvcore.c (th_init2): ditto.
* vm.c, vm.h: fix to stop using Qundef on VM stack. According to
this change, VM stack should not include Qundef value.
* insns.def (putundef): removed.
* compile.c (iseq_compile_each): ditto.
* eval.c (eval): fix spacing.
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to avoid GC problem in very early stage.
(RUBY_GC_STRESS causes GC in such stage.)
* variable.c (rb_gc_mark_global_tbl): rb_global_tbl may be 0 in
very early stage.
* thread.c (thread_cleanup_func) [IA64]: clear register stack position.
(thread_start_func_2) [IA64]: record the beginning of register
stack using extra argument.
(rb_gc_save_machine_context) [IA64]: record the end of register
stack.
* gc.c [IA64] (SET_STACK_END): record the end of register stack.
(garbage_collect) [IA64]: use recorded register stack area for
GC marking.
(yarv_machine_stack_mark) [IA64]: GC mark from the register stack
area.
* yarvcore.c [IA64] (rb_gc_register_stack_start): defined.
(Init_VM): store th->self on stack to fix GC problem.
(Init_yarv) [IA64]: initialize the beginning of register stack.
* yarvcore.h (struct rb_thread_struct) [IA64]: new members for
register stack area.
* thread_pthread.ci (thread_start_func_1) [IA64]: call
thread_start_func_2 with the end of register stack.
* cont.c (struct rb_context_struct) [IA64]: new members for register
stack area.
(cont_mark) [IA64]: GC mark from register stack area.
(cont_free) [IA64]: free saved register stack.
(cont_save_machine_stack) [IA64]: record the position and contents
of the register stack.
(cont_capture): store cont->self on stack to fix GC problem.
(cont_restore_1) [IA64]: restore the register stack.
[IA64] (register_stack_extend): new function.
(cont_restore_0) [IA64]: call register_stack_extend instead of
cont_restore_1.
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* cont.c (cont_restore_1): copy stack information from fiber.
* cont.c (rb_fiber_s_new): fix to mark created fiber.
* test/ruby/test_fiber.rb: add some tests around Thread and Fiber.
* yarvcore.c (thread_free): fix to skip freeing stack if root fiber
is available.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12454 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
of fiber body receive first yield values.
e.g.: Fiber.new{|x| p x}.yield(:ok) #=> :ok
* cont.c: rename rb_context_t#retval to rb_context_t#value.
* test/ruby/test_fiber.rb: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12425 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Fiber is known as "Micro Thread", "Coroutine", and other terms.
At this time, only Fiber#pass is supported to change context.
I want to know more suitable method name/API for Fiber (... do you
know more suitable class name instead of Fiber?) as "suspend/resume",
"call", "yield", "start/kick/stop/restart", ....
* eval.c, eval_intern.h, thread.c, yarvcore.c, yarvcore.h: ditto.
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