thread_pthread.c: timer thread stack size

	* thread_pthread.c (rb_thread_create_timer_thread): define the stack
  size for timer thread at compile time.
	* thread_pthread.c (rb_thread_create_timer_thread): expand timer
	  thread stack size to get rid of segfault on FreeBSD/powerpc64.
	  based on the patch by Steve Wills at [ruby-core:59923].
	  [ruby-core:56590] [Bug #8783]

	* thread_pthread.c (rb_thread_create_timer_thread): fix for platforms
	  where PTHREAD_STACK_MIN is a dynamic value and not a compile-time
	  constant.  [ruby-dev:47911] [Bug #9436]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@45006 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* thread_pthread.c (ruby_init_stack): Add STACK_GROW_DIR_DETECTION.
	  This fixes a compilation failure while cross-compiling for Tensilica
	  Xtensa Processor.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40546 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* thread_pthread.c (ruby_init_stack): Add STACK_GROW_DIR_DETECTION.
	  This fixes a compilation failure while cross-compiling for ARM.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40485 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* thread_pthread.c (ruby_init_stack): Avoid using uninitialized value.
	  stackaddr and size are not set if get_stack() fails.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40386 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* thread_pthread.c: Fixes wrong scopes of #if USE_SLEEPY_TIMER_THREAD
	  .. #endif sections.  This fixes a build error on NativeClient.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40385 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* configure.in: check struct timeval exist or not.

	* include/ruby/missing.h (struct timeval): check HAVE_STRUCT_TIMEVAL
	  properly. and don't include sys/time.h if struct timeval exist.

	* file.c: include sys/time.h explicitly.

	* random.c: ditto.

	* thread_pthread.c: ditto.

	* time.c: ditto.

	* ext/date/date_strftime.c: ditto.

	* include/ruby/missing.h (struct timespec): include <sys/time.h>


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39838 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* 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.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39727 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* thread_pthread.c (USE_SLEEPY_TIMER_THREAD): use more accurate
	  ifdef condtions.

	* thread_pthread.c (timer_thread_sleep): use poll() instead of
	  select(). select doesn't work if timer_thread_pipe[0] is
	  greater than FD_SETSIZE.

	* thread_pthread.c (USE_SLEEPY_TIMER_THREAD): add a dependency
	  against poll.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39726 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  if Ruby interpreter is running on co-routine.
  [Feature #2294]
  https://bugs.ruby-lang.org/issues/2294#note-18



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38905 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  fork()ing. Patch by Apollon Oikonomopoulos. Thanks!
  [Bug #7693][ruby-core:51424]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38819 b2dd03c8-39d4-4d8f-98ff-823fe69b080e