locks.h File Reference

#include "config.h"
#include "shared/log.h"
#include <errno.h>
#include <stdlib.h>

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Macros
#define	LOCKRET(func)
#define	PTHREADS_DISABLED   1
#define	lock_basic_init(lock)   /* nop */
#define	lock_basic_destroy(lock)   /* nop */
#define	lock_basic_lock(lock)   /* nop */
#define	lock_basic_unlock(lock)   /* nop */
#define	lock_basic_set(cond)   /* nop */
#define	lock_basic_sleep(cond, lock, sleep)   /* nop */
#define	lock_basic_alarm(cond)   /* nop */
#define	lock_basic_broadcast(cond)   /* nop */
#define	lock_basic_off(cond)   /* nop */
#define	ods_thread_create(thr, func, arg)   ods_thr_fork_create(thr, func, arg)
#define	ods_thread_detach(thr)   /* nop */
#define	ods_thread_self()   getpid()
#define	ods_thread_join(thr)   ods_thr_fork_wait(thr)

Typedefs
typedef int	lock_basic_type
typedef pid_t	ods_thread_type

Functions
void	ods_thr_fork_create (ods_thread_type *thr, void *(*func)(void *), void *arg)
void	ods_thr_fork_wait (ods_thread_type thread)
void	ods_thread_blocksigs (void)

Macro Definition Documentation

#define lock_basic_alarm

(

cond

)

/* nop */

Definition at line 96 of file locks.h.

Referenced by signal_handler(), worker_notify(), and worker_wakeup().

#define lock_basic_broadcast

(

cond

)

/* nop */

Definition at line 97 of file locks.h.

Referenced by fifoq_pop(), fifoq_push(), and worker_notify_all().

#define lock_basic_destroy

(

lock

)

/* nop */

Definition at line 90 of file locks.h.

Referenced by engine_cleanup(), fifoq_cleanup(), ixfr_cleanup(), schedule_cleanup(), stats_cleanup(), worker_cleanup(), xfrd_cleanup(), zone_cleanup(), zonelist_cleanup(), and zonelist_free().

#define lock_basic_init

(

lock

)

/* nop */

Definition at line 89 of file locks.h.

Referenced by fifoq_create(), ixfr_create(), schedule_create(), stats_create(), worker_create(), xfrd_create(), zone_create(), and zonelist_create().

#define lock_basic_lock

(

lock

)

/* nop */

Definition at line 91 of file locks.h.

Referenced by adapi_printixfr(), adapi_trans_diff(), adapi_trans_full(), addns_read(), addns_write(), backup_read_ixfr(), engine_start(), engine_update_zones(), namedb_wipe_denial(), query_process(), rrset_diff(), rrset_sign(), signal_handler(), tools_input(), tools_output(), worker_create(), worker_notify(), worker_notify_all(), worker_sleep(), worker_sleep_unless(), worker_wait_timeout(), worker_wakeup(), xfrd_create(), zone_recover2(), and zone_reschedule_task().

#define lock_basic_off

(

cond

)

/* nop */

Definition at line 98 of file locks.h.

Referenced by engine_cleanup(), fifoq_cleanup(), and worker_cleanup().

#define lock_basic_set

(

cond

)

/* nop */

Definition at line 94 of file locks.h.

Referenced by fifoq_create(), and worker_create().

#define lock_basic_sleep	(		cond,
			lock,
			sleep
	)		/* nop */

Definition at line 95 of file locks.h.

Referenced by worker_sleep(), worker_sleep_unless(), and worker_wait_timeout().

#define lock_basic_unlock

(

lock

)

/* nop */

Definition at line 92 of file locks.h.

Referenced by adapi_printixfr(), adapi_trans_diff(), adapi_trans_full(), addns_read(), addns_write(), backup_read_ixfr(), engine_start(), engine_update_zones(), namedb_wipe_denial(), query_process(), rrset_diff(), rrset_sign(), signal_handler(), tools_input(), tools_output(), worker_create(), worker_notify(), worker_notify_all(), worker_sleep(), worker_sleep_unless(), worker_wait_timeout(), worker_wakeup(), xfrd_create(), zone_recover2(), and zone_reschedule_task().

#define LOCKRET

(

func

)

Value:

do { \
        int err; \
        if ( (err=(func)) != 0) \
		ods_log_error("%s at %d could not " #func ": %s", \
                __FILE__, __LINE__, strerror(err)); \
        } while(0)

Threading and locking.

Definition at line 41 of file locks.h.

#define ods_thread_create	(		thr,
			func,
			arg
	)		ods_thr_fork_create(thr, func, arg)

Definition at line 101 of file locks.h.

Referenced by cmdhandler_start(), and engine_start_drudgers().

#define ods_thread_detach

(

thr

)

/* nop */

Definition at line 102 of file locks.h.

Referenced by cmdhandler_start().

#define ods_thread_join

(

thr

)

ods_thr_fork_wait(thr)

Definition at line 104 of file locks.h.

Referenced by engine_stop_drudgers().

#define ods_thread_self

(

)

getpid()

Definition at line 103 of file locks.h.

#define PTHREADS_DISABLED   1

Definition at line 86 of file locks.h.

Typedef Documentation

typedef int lock_basic_type

Definition at line 88 of file locks.h.

typedef pid_t ods_thread_type

Definition at line 100 of file locks.h.

Function Documentation

void ods_thr_fork_create	(	ods_thread_type *	thr,
		void *(*)(void *)	func,
		void *	arg
	)

No threading available: fork a new process. This means no shared data structure, and no locking. Only the main thread ever returns. Exits on errors.

Parameters

thr	the location where to store the thread-id.
func	function body of the thread. Return value of func is lost.
arg	user argument to func.

Definition at line 63 of file locks.c.

References ods_fatal_exit().

void ods_thr_fork_wait

(

ods_thread_type

thread

)

There is no threading. Wait for a process to terminate. Note that ub_thread_t is defined as pid_t.

Parameters

thread

the process id to wait for.

Definition at line 88 of file locks.c.

References ods_log_error(), and ods_log_warning().

void ods_thread_blocksigs

(

void

)

Definition at line 148 of file locks.c.

References ods_fatal_exit().