* thread_pthread.c (set_nonblock): new helper function for set
O_NONBLOCK.
* thread_pthread.c (rb_thread_create_timer_thread): set O_NONBLOCK
to timer_thread_pipe[0] too.
* thread_pthread.c (consume_communication_pipe): retry when
read returned CCP_READ_BUFF_SIZE.
* thread_pthread.c (rb_thread_create_timer_thread): factor out
creating communication pipe logic into separate function.
* thread_pthread.c (setup_communication_pipe): new helper function.
* thread_pthread.c (set_nonblock): moves a definition before
setup_communication_pipe.
* thread_pthread.c (rb_thread_wakeup_timer_thread_fd): add fd
argument and remove hardcoded dependency of timer_thread_pipe[1].
* thread_pthread.c (consume_communication_pipe): add fd argument.
* thread_pthread.c (close_communication_pipe): ditto.
* thread_pthread.c (timer_thread_sleep): adjust the above changes.
* thread_pthread.c (setup_communication_pipe_internal): factor
out pipe initialize logic.
* thread_pthread.c (ARRAY_SIZE): new.
* thread_pthread.c (gvl_acquire_common): use low priority
notification for avoiding timer thread interval confusion.
If we use timer_thread_pipe[1], every gvl_yield() request
one more gvl_yield(). It lead to thread starvation.
[Bug #7999] [ruby-core:53095]
* thread_pthread.c (rb_reserved_fd_p): adds timer_thread_pipe_low
to reserved fds.
* process.c (setup_communication_pipe): remove unused function.
it was unintentionally added r39683.
Added by nagachika (Tomoyuki Chikanaga) about 11 years ago
merge revision(s) 39679,39682,39683,39685,39686,39694: [Backport #7999]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39727 b2dd03c8-39d4-4d8f-98ff-823fe69b080e