thread_pthread.c File Reference

#include "gc.h"

Data Structures
struct	cached_thread_entry
Defines
#define	RB_CONDATTR_CLOCK_MONOTONIC 1
#define	USE_MONOTONIC_COND 0
#define	NATIVE_MUTEX_LOCK_DEBUG 0
#define	TIMET_MAX (~(time_t)0 <= 0 ? (time_t)((~(unsigned_time_t)0) >> 1) : (time_t)(~(unsigned_time_t)0))
#define	native_cleanup_push pthread_cleanup_push
#define	native_cleanup_pop pthread_cleanup_pop
#define	native_thread_yield() ((void)0)
#define	USE_THREAD_CACHE 0
#define	CHECK_ERR(expr) {int err = (expr); if (err) {rb_bug_errno(#expr, err);}}
#define	USE_NATIVE_THREAD_INIT 1
#define	RUBY_STACK_MIN (RUBY_STACK_MIN_LIMIT)
#define	RUBY_STACK_SPACE
#define	ubf_select 0
#define	TT_DEBUG 0
#define	WRITE_CONST(fd, str) (void)(write((fd),(str),sizeof(str)-1)<0)
#define	CCP_READ_BUFF_SIZE 1024
#define	TIME_QUANTUM_USEC (100 * 1000)
Typedefs
typedef unsigned long	unsigned_time_t
Enumerations
enum	{ RUBY_STACK_MIN_LIMIT = 512 * 1024, RUBY_STACK_SPACE_LIMIT = 1024 * 1024 }
Functions
static void	native_mutex_lock (pthread_mutex_t *lock)
static void	native_mutex_unlock (pthread_mutex_t *lock)
static int	native_mutex_trylock (pthread_mutex_t *lock)
static void	native_mutex_initialize (pthread_mutex_t *lock)
static void	native_mutex_destroy (pthread_mutex_t *lock)
static void	native_cond_signal (rb_thread_cond_t *cond)
static void	native_cond_broadcast (rb_thread_cond_t *cond)
static void	native_cond_wait (rb_thread_cond_t cond, pthread_mutex_t mutex)
static void	native_cond_initialize (rb_thread_cond_t *cond, int flags)
static void	native_cond_destroy (rb_thread_cond_t *cond)
static void	gvl_acquire_common (rb_vm_t *vm)
static void	gvl_acquire (rb_vm_t vm, rb_thread_t th)
static void	gvl_release_common (rb_vm_t *vm)
static void	gvl_release (rb_vm_t *vm)
static void	gvl_yield (rb_vm_t vm, rb_thread_t th)
static void	gvl_init (rb_vm_t *vm)
static void	gvl_destroy (rb_vm_t *vm)
static void	gvl_atfork (rb_vm_t *vm)
static void	mutex_debug (const char msg, pthread_mutex_t lock)
static int	native_cond_timedwait (rb_thread_cond_t cond, pthread_mutex_t mutex, struct timespec *ts)
static struct timespec	native_cond_timeout (rb_thread_cond_t *cond, struct timespec timeout_rel)
static void	null_func (int i)
static rb_thread_t *	ruby_thread_from_native (void)
static int	ruby_thread_set_native (rb_thread_t *th)
static void	native_thread_init (rb_thread_t *th)
void	Init_native_thread (void)
static void	native_thread_destroy (rb_thread_t *th)
void	ruby_init_stack (volatile VALUE *addr)
static int	native_thread_init_stack (rb_thread_t *th)
static void *	thread_start_func_1 (void *th_ptr)
static int	use_cached_thread (rb_thread_t *th)
static int	native_thread_create (rb_thread_t *th)
static void	native_thread_join (pthread_t th)
static void	ubf_pthread_cond_signal (void *ptr)
static void	native_sleep (rb_thread_t th, struct timeval timeout_tv)
static void	add_signal_thread_list (rb_thread_t *th)
static void	remove_signal_thread_list (rb_thread_t *th)
static void	ping_signal_thread_list (void)
static int	check_signal_thread_list (void)
void	rb_thread_wakeup_timer_thread (void)
static void	consume_communication_pipe (void)
static void	close_communication_pipe (void)
static void *	thread_timer (void *p)
static void	rb_thread_create_timer_thread (void)
static int	native_stop_timer_thread (int close_anyway)
static void	native_reset_timer_thread (void)
int	rb_reserved_fd_p (int fd)
Variables
static pthread_t	timer_thread_id
static pthread_key_t	ruby_native_thread_key
struct {
rb_thread_id_t id
size_t stack_maxsize
VALUE * stack_start
}	native_main_thread
static int	timer_thread_pipe [2] = {-1, -1}
static int	timer_thread_pipe_owner_process

Define Documentation

#define CCP_READ_BUFF_SIZE 1024

Referenced by consume_communication_pipe().

#define CHECK_ERR ( expr ) {int err = (expr); if (err) {rb_bug_errno(#expr, err);}}

Definition at line 602 of file thread_pthread.c.

Referenced by native_thread_create(), and native_thread_init_stack().

#define native_cleanup_pop pthread_cleanup_pop

Definition at line 395 of file thread_pthread.c.

#define native_cleanup_push pthread_cleanup_push

Definition at line 394 of file thread_pthread.c.

#define NATIVE_MUTEX_LOCK_DEBUG 0

Definition at line 165 of file thread_pthread.c.

Referenced by mutex_debug().

#define native_thread_yield ( ) ((void)0)

Definition at line 399 of file thread_pthread.c.

Referenced by gvl_yield().

#define RB_CONDATTR_CLOCK_MONOTONIC 1

Definition at line 43 of file thread_pthread.c.

Referenced by gvl_init(), mutex_alloc(), native_cond_initialize(), and native_thread_init().

#define RUBY_STACK_MIN (RUBY_STACK_MIN_LIMIT)

Definition at line 777 of file thread_pthread.c.

Referenced by native_thread_create().

#define RUBY_STACK_SPACE

Value:

(RUBY_STACK_MIN/5 > RUBY_STACK_SPACE_LIMIT ? \
                          RUBY_STACK_SPACE_LIMIT : RUBY_STACK_MIN/5)

Definition at line 779 of file thread_pthread.c.

Referenced by native_thread_create().

#define TIME_QUANTUM_USEC (100 * 1000)

Definition at line 1124 of file thread_pthread.c.

Referenced by rb_threadptr_execute_interrupts_common(), thread_timer(), and timer_thread_func().

#define TIMET_MAX (~(time_t)0 <= 0 ? (time_t)((~(unsigned_time_t)0) >> 1) : (time_t)(~(unsigned_time_t)0))

Definition at line 347 of file thread_pthread.c.

Referenced by find_time_t(), init_leap_second_info(), native_cond_timeout(), rb_time_new(), timew_out_of_timet_range(), and wv2timet().

#define TT_DEBUG 0

Definition at line 1056 of file thread_pthread.c.

Referenced by native_reset_timer_thread(), native_stop_timer_thread(), rb_thread_wakeup_timer_thread(), and thread_timer().

#define ubf_select 0

Definition at line 1048 of file thread_pthread.c.

Referenced by do_select(), rb_thread_blocking_region(), rb_thread_blocking_region_begin(), and rb_thread_io_blocking_region().

#define USE_MONOTONIC_COND 0

Definition at line 49 of file thread_pthread.c.

#define USE_NATIVE_THREAD_INIT 1

Definition at line 636 of file thread_pthread.c.

#define USE_THREAD_CACHE 0

Definition at line 460 of file thread_pthread.c.

#define WRITE_CONST	(	fd,
		str		)	(void)(write((fd),(str),sizeof(str)-1)<0)

Definition at line 1058 of file thread_pthread.c.

Typedef Documentation

typedef unsigned long unsigned_time_t

Definition at line 338 of file thread_pthread.c.

Enumeration Type Documentation

anonymous enum

Enumerator:

RUBY_STACK_MIN_LIMIT
RUBY_STACK_SPACE_LIMIT

Definition at line 764 of file thread_pthread.c.

Function Documentation

static void add_signal_thread_list ( rb_thread_t * th ) [static]

Definition at line 1046 of file thread_pthread.c.

static int check_signal_thread_list ( void ) [static]

Definition at line 1050 of file thread_pthread.c.

Referenced by thread_timer().

static void close_communication_pipe ( void ) [static]

Definition at line 1110 of file thread_pthread.c.

References errno, and rb_bug_errno().

Referenced by rb_thread_create_timer_thread().

static void consume_communication_pipe ( void ) [static]

Definition at line 1091 of file thread_pthread.c.

References CCP_READ_BUFF_SIZE, errno, rb_async_bug_errno(), and result.

Referenced by thread_timer().

static void gvl_acquire	(	rb_vm_t *	vm,
		rb_thread_t *	th
	)			`[static]`

Definition at line 79 of file thread_pthread.c.

References rb_vm_struct::gvl, gvl_acquire_common(), rb_global_vm_lock_struct::lock, native_mutex_lock(), and native_mutex_unlock().

Referenced by blocking_region_end(), gvl_atfork(), Init_Thread(), and thread_start_func_2().

static void gvl_acquire_common ( rb_vm_t * vm ) [static]

Definition at line 53 of file thread_pthread.c.

References rb_global_vm_lock_struct::acquired, rb_global_vm_lock_struct::cond, rb_vm_struct::gvl, rb_global_vm_lock_struct::lock, native_cond_signal(), native_cond_wait(), rb_global_vm_lock_struct::need_yield, rb_thread_wakeup_timer_thread(), rb_global_vm_lock_struct::switch_cond, and rb_global_vm_lock_struct::waiting.

Referenced by gvl_acquire(), and gvl_yield().

static void gvl_atfork ( rb_vm_t * vm ) [static]

Definition at line 159 of file thread_pthread.c.

References GET_THREAD, gvl_acquire(), and gvl_init().

Referenced by rb_thread_atfork_internal().

static void gvl_destroy ( rb_vm_t * vm ) [static]

Definition at line 150 of file thread_pthread.c.

References rb_global_vm_lock_struct::cond, rb_vm_struct::gvl, rb_global_vm_lock_struct::lock, native_cond_destroy(), native_mutex_destroy(), rb_global_vm_lock_struct::switch_cond, and rb_global_vm_lock_struct::switch_wait_cond.

Referenced by rb_vm_gvl_destroy().

static void gvl_init ( rb_vm_t * vm ) [static]

Definition at line 137 of file thread_pthread.c.

References rb_global_vm_lock_struct::acquired, rb_global_vm_lock_struct::cond, rb_vm_struct::gvl, rb_global_vm_lock_struct::lock, native_cond_initialize(), native_mutex_initialize(), rb_global_vm_lock_struct::need_yield, RB_CONDATTR_CLOCK_MONOTONIC, rb_global_vm_lock_struct::switch_cond, rb_global_vm_lock_struct::switch_wait_cond, rb_global_vm_lock_struct::wait_yield, and rb_global_vm_lock_struct::waiting.

Referenced by gvl_atfork(), and Init_Thread().

static void gvl_release ( rb_vm_t * vm ) [static]

Definition at line 95 of file thread_pthread.c.

References rb_vm_struct::gvl, gvl_release_common(), rb_global_vm_lock_struct::lock, native_mutex_lock(), and native_mutex_unlock().

Referenced by rb_vm_gvl_destroy().

static void gvl_release_common ( rb_vm_t * vm ) [static]

Definition at line 87 of file thread_pthread.c.

References rb_global_vm_lock_struct::acquired, rb_global_vm_lock_struct::cond, rb_vm_struct::gvl, native_cond_signal(), and rb_global_vm_lock_struct::waiting.

Referenced by gvl_release(), and gvl_yield().

static void gvl_yield	(	rb_vm_t *	vm,
		rb_thread_t *	th
	)			`[static]`

Definition at line 103 of file thread_pthread.c.

References rb_vm_struct::gvl, gvl_acquire_common(), gvl_release_common(), rb_global_vm_lock_struct::lock, native_cond_broadcast(), native_cond_wait(), native_mutex_lock(), native_mutex_unlock(), rb_global_vm_lock_struct::need_yield, rb_global_vm_lock_struct::switch_cond, rb_global_vm_lock_struct::switch_wait_cond, UNLIKELY, rb_global_vm_lock_struct::wait_yield, and rb_global_vm_lock_struct::waiting.

Referenced by rb_thread_schedule_limits().

void Init_native_thread ( void )

Definition at line 434 of file thread_pthread.c.

References GET_THREAD, native_mutex_initialize(), native_thread_init(), NULL, null_func(), posix_signal(), ruby_native_thread_key, and rb_thread_struct::thread_id.

Referenced by Init_BareVM().

static void mutex_debug	(	const char *	msg,
		pthread_mutex_t *	lock
	)			`[static]`

Definition at line 168 of file thread_pthread.c.

References EXIT_FAILURE, and NATIVE_MUTEX_LOCK_DEBUG.

Referenced by native_mutex_destroy(), native_mutex_initialize(), native_mutex_lock(), native_mutex_trylock(), and native_mutex_unlock().

static void native_cond_broadcast ( rb_thread_cond_t * cond ) [static]

Definition at line 295 of file thread_pthread.c.

References rb_thread_cond_struct::cond, and rb_bug_errno().

Referenced by gvl_yield(), and lock_interrupt().

static void native_cond_destroy ( rb_thread_cond_t * cond ) [static]

Definition at line 264 of file thread_pthread.c.

References rb_thread_cond_struct::cond, and rb_bug_errno().

Referenced by gvl_destroy(), mutex_free(), and native_thread_destroy().

static void native_cond_initialize	(	rb_thread_cond_t *	cond,
		int	flags
	)			`[static]`

Definition at line 237 of file thread_pthread.c.

References rb_thread_cond_struct::cond, rb_bug_errno(), and RB_CONDATTR_CLOCK_MONOTONIC.

Referenced by gvl_init(), mutex_alloc(), and native_thread_init().

static void native_cond_signal ( rb_thread_cond_t * cond ) [static]

Definition at line 283 of file thread_pthread.c.

References rb_thread_cond_struct::cond, and rb_bug_errno().

Referenced by gvl_acquire_common(), gvl_release_common(), rb_mutex_unlock_th(), ubf_pthread_cond_signal(), and use_cached_thread().

static int native_cond_timedwait	(	rb_thread_cond_t *	cond,
		pthread_mutex_t *	mutex,
		struct timespec *	ts
	)			`[static]`

Definition at line 316 of file thread_pthread.c.

References rb_thread_cond_struct::cond, ETIMEDOUT, and rb_bug_errno().

Referenced by lock_func(), and native_sleep().

static struct timespec native_cond_timeout	(	rb_thread_cond_t *	cond,
		struct timespec	timeout_rel
	)			`[static, read]`

Definition at line 350 of file thread_pthread.c.

References gettimeofday(), rb_bug(), rb_sys_fail, TIMET_MAX, timespec::tv_nsec, timeval::tv_sec, timespec::tv_sec, and timeval::tv_usec.

Referenced by lock_func(), and native_sleep().

static void native_cond_wait	(	rb_thread_cond_t *	cond,
		pthread_mutex_t *	mutex
	)			`[static]`

Definition at line 307 of file thread_pthread.c.

References rb_thread_cond_struct::cond, and rb_bug_errno().

Referenced by gvl_acquire_common(), gvl_yield(), lock_func(), and native_sleep().

static void native_mutex_destroy ( pthread_mutex_t * lock ) [static]

Definition at line 227 of file thread_pthread.c.

References mutex_debug(), and rb_bug_errno().

Referenced by gvl_destroy(), mutex_free(), rb_thread_lock_destroy(), and thread_cleanup_func().

static void native_mutex_initialize ( pthread_mutex_t * lock ) [static]

Definition at line 217 of file thread_pthread.c.

References mutex_debug(), and rb_bug_errno().

Referenced by gvl_init(), Init_native_thread(), Init_Thread(), mutex_alloc(), and thread_create_core().

static void native_mutex_lock ( pthread_mutex_t * lock ) [static]

Definition at line 181 of file thread_pthread.c.

References mutex_debug(), and rb_bug_errno().

Referenced by check_deadlock_i(), gvl_acquire(), gvl_release(), gvl_yield(), lock_interrupt(), rb_mutex_lock(), rb_mutex_trylock(), rb_mutex_unlock_th(), rb_threadptr_interrupt(), reset_unblock_function(), set_unblock_function(), and thread_fd_close_i().

static int native_mutex_trylock ( pthread_mutex_t * lock ) [inline, static]

Definition at line 201 of file thread_pthread.c.

References mutex_debug(), and rb_bug_errno().

Referenced by Init_Thread().

static void native_mutex_unlock ( pthread_mutex_t * lock ) [static]

Definition at line 191 of file thread_pthread.c.

References mutex_debug(), and rb_bug_errno().

Referenced by check_deadlock_i(), gvl_acquire(), gvl_release(), gvl_yield(), lock_interrupt(), rb_mutex_lock(), rb_mutex_trylock(), rb_mutex_unlock_th(), rb_thread_lock_unlock(), rb_threadptr_interrupt(), reset_unblock_function(), set_unblock_function(), and thread_fd_close_i().

static void native_reset_timer_thread ( void ) [static]

Definition at line 1288 of file thread_pthread.c.

References TT_DEBUG.

Referenced by rb_thread_reset_timer_thread(), and rb_thread_stop_timer_thread().

static void native_sleep	(	rb_thread_t *	th,
		struct timeval *	timeout_tv
	)			`[static]`

static int native_stop_timer_thread ( int close_anyway ) [static]

Definition at line 1259 of file thread_pthread.c.

References native_thread_join(), rb_thread_wakeup_timer_thread(), system_working, timer_thread_id, and TT_DEBUG.

Referenced by rb_thread_stop_timer_thread().

static int native_thread_create ( rb_thread_t * th ) [static]

Definition at line 783 of file thread_pthread.c.

References CHECK_ERR, err, rb_thread_struct::machine_stack_maxsize, RUBY_STACK_MIN, RUBY_STACK_SPACE, thread_debug, rb_thread_struct::thread_id, thread_start_func_1(), and use_cached_thread().

Referenced by thread_create_core().

static void native_thread_destroy ( rb_thread_t * th ) [static]

Definition at line 455 of file thread_pthread.c.

References native_cond_destroy(), rb_thread_struct::native_thread_data, and native_thread_data_struct::sleep_cond.

Referenced by thread_cleanup_func().

static void native_thread_init ( rb_thread_t * th ) [static]

Definition at line 448 of file thread_pthread.c.

References native_cond_initialize(), rb_thread_struct::native_thread_data, RB_CONDATTR_CLOCK_MONOTONIC, ruby_thread_set_native(), and native_thread_data_struct::sleep_cond.

Referenced by Init_native_thread(), and thread_start_func_1().

static int native_thread_init_stack ( rb_thread_t * th ) [static]

Definition at line 606 of file thread_pthread.c.

References rb_thread_struct::machine_stack_maxsize, rb_thread_struct::machine_stack_start, native_main_thread, rb_eNotImpError, and rb_raise().

Referenced by ruby_thread_init_stack(), and thread_start_func_1().

static void native_thread_join ( pthread_t th ) [static]

Definition at line 821 of file thread_pthread.c.

References err, rb_eThreadError, and rb_raise().

Referenced by native_stop_timer_thread().

static void null_func ( int i ) [static]

Definition at line 414 of file thread_pthread.c.

Referenced by Init_native_thread().

static void ping_signal_thread_list ( void ) [static]

Definition at line 1049 of file thread_pthread.c.

Referenced by thread_timer().

int rb_reserved_fd_p ( int fd )

Definition at line 1329 of file thread_pthread.c.

static void rb_thread_create_timer_thread ( void ) [static]

Definition at line 1186 of file thread_pthread.c.

References close_communication_pipe(), err, errno, EXIT_FAILURE, F_SETFL, fcntl(), GET_VM, O_NONBLOCK, rb_bug(), rb_bug_errno(), rb_disable_interrupt(), rb_enable_interrupt(), rb_update_max_fd(), THREAD_DEBUG, thread_timer(), and timer_thread_id.

Referenced by Init_Thread(), and rb_thread_start_timer_thread().

void rb_thread_wakeup_timer_thread ( void )

Definition at line 1062 of file thread_pthread.c.

Referenced by gvl_acquire_common(), native_stop_timer_thread(), and sighandler().

static void remove_signal_thread_list ( rb_thread_t * th ) [static]

Definition at line 1047 of file thread_pthread.c.

void ruby_init_stack ( volatile VALUE * addr )

Definition at line 560 of file thread_pthread.c.

References getrlimit(), native_main_thread, STACK_DIR_UPPER, STACK_GROW_DIR_DETECTION, and STACK_UPPER.

static rb_thread_t* ruby_thread_from_native ( void ) [static]

Definition at line 420 of file thread_pthread.c.

References ruby_native_thread_key.

Referenced by rb_thread_call_with_gvl(), ruby_native_thread_p(), and ruby_thread_has_gvl_p().

static int ruby_thread_set_native ( rb_thread_t * th ) [static]

Definition at line 426 of file thread_pthread.c.

References ruby_native_thread_key.

Referenced by native_thread_init(), and thread_start_func_2().

static void* thread_start_func_1 ( void * th_ptr ) [static]

Definition at line 640 of file thread_pthread.c.

References rb_thread_struct::machine_stack_start, native_thread_init(), native_thread_init_stack(), stack_start, rb_thread_struct::thread_id, thread_start(), and thread_start_func_2.

Referenced by native_thread_create().

static void* thread_timer ( void * p ) [static]

Definition at line 1127 of file thread_pthread.c.

References check_signal_thread_list(), consume_communication_pipe(), errno, FD_SET, NULL, ping_signal_thread_list(), rb_async_bug_errno(), result, system_working, TIME_QUANTUM_USEC, timer_thread_function(), TT_DEBUG, timeval::tv_sec, timeval::tv_usec, rb_global_vm_lock_struct::waiting, and WRITE_CONST.

Referenced by rb_thread_create_timer_thread().

static void ubf_pthread_cond_signal ( void * ptr ) [static]

Definition at line 861 of file thread_pthread.c.

References native_cond_signal(), and thread_debug.

Referenced by native_sleep().

static int use_cached_thread ( rb_thread_t * th ) [static]

Definition at line 739 of file thread_pthread.c.

References cached_thread_entry::cond, native_cond_signal(), cached_thread_entry::next, result, and cached_thread_entry::th_area.

Referenced by native_thread_create().

Variable Documentation

rb_thread_id_t id

Definition at line 546 of file thread_pthread.c.

struct { ... } native_main_thread [static]

Referenced by native_thread_init_stack(), and ruby_init_stack().

pthread_key_t ruby_native_thread_key [static]

Definition at line 411 of file thread_pthread.c.

Referenced by Init_native_thread(), ruby_thread_from_native(), and ruby_thread_set_native().

size_t stack_maxsize

Definition at line 547 of file thread_pthread.c.

VALUE* stack_start

Definition at line 548 of file thread_pthread.c.

Referenced by mark_current_machine_context(), rb_gc_mark_machine_stack(), and thread_start_func_1().

pthread_t timer_thread_id [static]

Definition at line 41 of file thread_pthread.c.

Referenced by native_stop_timer_thread(), rb_thread_create_timer_thread(), and rb_thread_stop_timer_thread().

int timer_thread_pipe[2] = {-1, -1} [static]

Definition at line 1053 of file thread_pthread.c.

int timer_thread_pipe_owner_process [static]

Definition at line 1054 of file thread_pthread.c.

thread_pthread.c File Reference

Data Structures

Defines

Typedefs

Enumerations

Functions

Variables

Define Documentation

Typedef Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation