kern_condvar.c File Reference

#include <sys/cdefs.h>
#include "opt_ktrace.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/limits.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#include <sys/ktr.h>
#include <sys/condvar.h>
#include <sys/sched.h>
#include <sys/signalvar.h>
#include <sys/sleepqueue.h>
#include <sys/resourcevar.h>

Include dependency graph for kern_condvar.c:

Go to the source code of this file.

Macros
#define	CV_WAITERS_BOUND   INT_MAX
#define	CV_WAITERS_INC(cvp)
#define	CV_ASSERT(cvp, lock, td)

Functions
	__FBSDID ("$FreeBSD$")
void	cv_init (struct cv *cvp, const char *desc)
void	cv_destroy (struct cv *cvp)
void	_cv_wait (struct cv *cvp, struct lock_object *lock)
void	_cv_wait_unlock (struct cv *cvp, struct lock_object *lock)
int	_cv_wait_sig (struct cv *cvp, struct lock_object *lock)
int	_cv_timedwait_sbt (struct cv *cvp, struct lock_object *lock, sbintime_t sbt, sbintime_t pr, int flags)
int	_cv_timedwait_sig_sbt (struct cv *cvp, struct lock_object *lock, sbintime_t sbt, sbintime_t pr, int flags)
void	cv_signal (struct cv *cvp)
void	cv_broadcastpri (struct cv *cvp, int pri)

Macro Definition Documentation

CV_ASSERT

#define CV_ASSERT	(		cvp,
			lock,
			td
	)

Value:

        do {                                    \
        KASSERT((td) != NULL, ("%s: td NULL", __func__));               \
        KASSERT(TD_IS_RUNNING(td), ("%s: not TDS_RUNNING", __func__));  \
        KASSERT((cvp) != NULL, ("%s: cvp NULL", __func__));             \
        KASSERT((lock) != NULL, ("%s: lock NULL", __func__));           \
} while (0)

Definition at line 66 of file kern_condvar.c.

CV_WAITERS_BOUND

#define CV_WAITERS_BOUND   INT_MAX

Definition at line 56 of file kern_condvar.c.

CV_WAITERS_INC

#define CV_WAITERS_INC

(

cvp

)

Value:

        do {                                    \
        if ((cvp)->cv_waiters < CV_WAITERS_BOUND)                       \
                (cvp)->cv_waiters++;                                    \
} while (0)

Definition at line 58 of file kern_condvar.c.

Function Documentation

__FBSDID()

__FBSDID

(

"$FreeBSD$"

)

_cv_timedwait_sbt()

int _cv_timedwait_sbt	(	struct cv *	cvp,
		struct lock_object *	lock,
		sbintime_t	sbt,
		sbintime_t	pr,
		int	flags
	)

Definition at line 273 of file kern_condvar.c.

References CV_ASSERT, CV_WAITERS_INC, flags, Giant, pr, sleepq_add(), sleepq_lock(), sleepq_release(), sleepq_set_timeout_sbt(), and sleepq_timedwait().

Here is the call graph for this function:

_cv_timedwait_sig_sbt()

int _cv_timedwait_sig_sbt	(	struct cv *	cvp,
		struct lock_object *	lock,
		sbintime_t	sbt,
		sbintime_t	pr,
		int	flags
	)

Definition at line 335 of file kern_condvar.c.

References CV_ASSERT, CV_WAITERS_INC, flags, Giant, pr, sleepq_add(), sleepq_lock(), sleepq_release(), sleepq_set_timeout_sbt(), and sleepq_timedwait_sig().

Here is the call graph for this function:

_cv_wait()

void _cv_wait	(	struct cv *	cvp,
		struct lock_object *	lock
	)

Definition at line 109 of file kern_condvar.c.

References CV_ASSERT, CV_WAITERS_INC, Giant, sleepq_add(), sleepq_lock(), sleepq_release(), and sleepq_wait().

Here is the call graph for this function:

_cv_wait_sig()

int _cv_wait_sig	(	struct cv *	cvp,
		struct lock_object *	lock
	)

Definition at line 213 of file kern_condvar.c.

References CV_ASSERT, CV_WAITERS_INC, Giant, sleepq_add(), sleepq_lock(), sleepq_release(), and sleepq_wait_sig().

Here is the call graph for this function:

_cv_wait_unlock()

void _cv_wait_unlock	(	struct cv *	cvp,
		struct lock_object *	lock
	)

Definition at line 164 of file kern_condvar.c.

References CV_ASSERT, CV_WAITERS_INC, Giant, sleepq_add(), sleepq_lock(), sleepq_release(), and sleepq_wait().

Here is the call graph for this function:

cv_broadcastpri()

void cv_broadcastpri	(	struct cv *	cvp,
		int	pri
	)

Definition at line 424 of file kern_condvar.c.

References sleepq_broadcast(), sleepq_lock(), and sleepq_release().

Referenced by doselwakeup(), and logtimeout().

Here is the call graph for this function:

Here is the caller graph for this function:

cv_destroy()

void cv_destroy

(

struct cv *

cvp

)

Definition at line 89 of file kern_condvar.c.

References sleepq_lock(), sleepq_lookup(), and sleepq_release().

Referenced by ksem_drop(), seltdfini(), sema_destroy(), sendfile_sync_destroy(), and tty_dealloc().

Here is the call graph for this function:

Here is the caller graph for this function:

cv_init()

void cv_init	(	struct cv *	cvp,
		const char *	desc
	)

Definition at line 77 of file kern_condvar.c.

Referenced by devinit(), ksem_alloc(), log_drvinit(), proc_init(), pts_alloc(), pts_alloc_external(), seltdinit(), sema_init(), tty_alloc_mutex(), vn_sendfile(), and vntblinit().

Here is the caller graph for this function:

cv_signal()

void cv_signal

(

struct cv *

cvp

)

Definition at line 398 of file kern_condvar.c.

References CV_WAITERS_BOUND, sleepq_lock(), sleepq_lookup(), sleepq_release(), and sleepq_signal().

Referenced by _sema_post(), sendfile_sync_signal(), sys_ksem_post(), and ttydev_write().

Here is the call graph for this function:

Here is the caller graph for this function: