/*
- * "$Id: sysman.c 6649 2007-07-11 21:46:42Z mike $"
+ * "$Id: sysman.c 7928 2008-09-10 22:14:22Z mike $"
*
* System management definitions for the Common UNIX Printing System (CUPS).
*
- * Copyright 2007 by Apple Inc.
+ * Copyright 2007-2008 by Apple Inc.
* Copyright 2006 by Easy Software Products.
*
* These coded instructions, statements, and computer programs are the
*
* Contents:
*
+ * cupsdCleanDirty() - Write dirty config and state files.
+ * cupsdMarkDirty() - Mark config or state files as needing a
+ * write.
+ * cupsdSetBusyState() - Let the system know when we are busy
+ * doing something.
* cupsdStartSystemMonitor() - Start monitoring for system change.
* cupsdStopSystemMonitor() - Stop monitoring for system change.
- * cupsdUpdateSystemMonitor() - Update the current system state.
* sysEventThreadEntry() - A thread to receive power and computer
* name change notifications.
* sysEventPowerNotifier() - Handle power notification events.
* sysEventConfigurationNotifier() - Computer name changed notification
* callback.
* sysEventTimerNotifier() - Handle delayed event notifications.
+ * sysUpdate() - Update the current system state.
*/
/*
- * Power management is a new addition to CUPS. Right now it is only
- * implemented on MacOS X, but essentially we use these three functions
- * to let the OS know when it is OK to put the system to sleep, typically
- * when we are not in the middle of printing a job.
+ * The system management functions cover disk and power management which
+ * are primarily used on portable computers.
*
- * Once put to sleep, we invalidate all remote printers since it is
- * common to wake up in a new location.
+ * Disk management involves delaying the write of certain configuration
+ * and state files to minimize the number of times the disk has to spin
+ * up.
+ *
+ * Power management support is currently only implemented on MacOS X, but
+ * essentially we use four functions to let the OS know when it is OK to
+ * put the system to idle sleep, typically when we are not in the middle of
+ * printing a job.
+ *
+ * Once put to sleep, we invalidate all remote printers since it is common
+ * to wake up in a new location/on a new wireless network.
+ */
+
+
+/*
+ * 'cupsdCleanDirty()' - Write dirty config and state files.
+ */
+
+void
+cupsdCleanDirty(void)
+{
+ if (DirtyFiles & CUPSD_DIRTY_PRINTERS)
+ cupsdSaveAllPrinters();
+
+ if (DirtyFiles & CUPSD_DIRTY_CLASSES)
+ cupsdSaveAllClasses();
+
+ if (DirtyFiles & CUPSD_DIRTY_REMOTE)
+ cupsdSaveRemoteCache();
+
+ if (DirtyFiles & CUPSD_DIRTY_PRINTCAP)
+ cupsdWritePrintcap();
+
+ if (DirtyFiles & CUPSD_DIRTY_JOBS)
+ {
+ cupsd_job_t *job; /* Current job */
+
+ cupsdSaveAllJobs();
+
+ for (job = (cupsd_job_t *)cupsArrayFirst(Jobs);
+ job;
+ job = (cupsd_job_t *)cupsArrayNext(Jobs))
+ if (job->dirty)
+ cupsdSaveJob(job);
+ }
+
+ if (DirtyFiles & CUPSD_DIRTY_SUBSCRIPTIONS)
+ cupsdSaveAllSubscriptions();
+
+ DirtyFiles = CUPSD_DIRTY_NONE;
+ DirtyCleanTime = 0;
+
+ cupsdSetBusyState();
+}
+
+
+/*
+ * 'cupsdMarkDirty()' - Mark config or state files as needing a write.
*/
+void
+cupsdMarkDirty(int what) /* I - What file(s) are dirty? */
+{
+ if (what == CUPSD_DIRTY_PRINTCAP && !Printcap)
+ return;
+
+ DirtyFiles |= what;
+
+ if (!DirtyCleanTime)
+ DirtyCleanTime = time(NULL) + DirtyCleanInterval;
+
+ cupsdSetBusyState();
+}
+
+
+/*
+ * 'cupsdSetBusyState()' - Let the system know when we are busy doing something.
+ */
+
+void
+cupsdSetBusyState(void)
+{
+ int newbusy; /* New busy state */
+ static int busy = 0; /* Current busy state */
+ static const char * const busy_text[] =
+ { /* Text for busy states */
+ "Not busy",
+ "Dirty files",
+ "Printing jobs",
+ "Printing jobs and dirty files",
+ "Active clients",
+ "Active clients and dirty files",
+ "Active clients and printing jobs",
+ "Active clients, printing jobs, and dirty files"
+ };
+
+
+ newbusy = (DirtyCleanTime ? 1 : 0) |
+ (cupsArrayCount(PrintingJobs) ? 2 : 0) |
+ (cupsArrayCount(ActiveClients) ? 4 : 0);
+
+ if (newbusy != busy)
+ {
+ busy = newbusy;
+
+ cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSetBusyState: %s", busy_text[busy]);
+ }
+}
+
+
#ifdef __APPLE__
/*
* This is the Apple-specific system event code. It works by creating
CFArrayRef changedKeys,
void *context);
static void sysEventTimerNotifier(CFRunLoopTimerRef timer, void *context);
+static void sysUpdate(void);
/*
return;
}
- cupsdAddSelect(SysEventPipes[0], (cupsd_selfunc_t)cupsdUpdateSystemMonitor,
- NULL, NULL);
+ cupsdAddSelect(SysEventPipes[0], (cupsd_selfunc_t)sysUpdate, NULL, NULL);
/*
* Set non-blocking mode on the descriptor we will be receiving notification
}
-/*
- * 'cupsdUpdateSystemMonitor()' - Update the current system state.
- */
-
-void
-cupsdUpdateSystemMonitor(void)
-{
- int i; /* Looping var */
- cupsd_sysevent_t sysevent; /* The system event */
- cupsd_printer_t *p; /* Printer information */
-
-
- /*
- * Drain the event pipe...
- */
-
- while (read((int)SysEventPipes[0], &sysevent, sizeof(sysevent))
- == sizeof(sysevent))
- {
- if (sysevent.event & SYSEVENT_CANSLEEP)
- {
- /*
- * If there are active printers that don't have the connecting-to-device
- * printer-state-reason then cancel the sleep request (i.e. this reason
- * indicates a job that is not yet connected to the printer)...
- */
-
- for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
- p;
- p = (cupsd_printer_t *)cupsArrayNext(Printers))
- {
- if (p->job)
- {
- for (i = 0; i < p->num_reasons; i ++)
- if (!strcmp(p->reasons[i], "connecting-to-device"))
- break;
-
- if (!p->num_reasons || i >= p->num_reasons)
- break;
- }
- }
-
- if (p)
- {
- cupsdLogMessage(CUPSD_LOG_INFO,
- "System sleep canceled because printer %s is active",
- p->name);
- IOCancelPowerChange(sysevent.powerKernelPort,
- sysevent.powerNotificationID);
- }
- else
- {
- cupsdLogMessage(CUPSD_LOG_DEBUG, "System wants to sleep");
- IOAllowPowerChange(sysevent.powerKernelPort,
- sysevent.powerNotificationID);
- }
- }
-
- if (sysevent.event & SYSEVENT_WILLSLEEP)
- {
- cupsdLogMessage(CUPSD_LOG_DEBUG, "System going to sleep");
-
- Sleeping = 1;
-
- cupsdStopAllJobs(0);
- cupsdSaveAllJobs();
-
- for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
- p;
- p = (cupsd_printer_t *)cupsArrayNext(Printers))
- {
- if (p->type & CUPS_PRINTER_REMOTE)
- {
- cupsdLogMessage(CUPSD_LOG_DEBUG,
- "Deleting remote destination \"%s\"", p->name);
- cupsArraySave(Printers);
- cupsdDeletePrinter(p, 0);
- cupsArrayRestore(Printers);
- }
- else
- {
- cupsdLogMessage(CUPSD_LOG_DEBUG,
- "Deregistering local printer \"%s\"", p->name);
- cupsdDeregisterPrinter(p, 0);
- }
- }
-
- IOAllowPowerChange(sysevent.powerKernelPort,
- sysevent.powerNotificationID);
- }
-
- if (sysevent.event & SYSEVENT_WOKE)
- {
- cupsdLogMessage(CUPSD_LOG_DEBUG, "System woke from sleep");
- IOAllowPowerChange(sysevent.powerKernelPort,
- sysevent.powerNotificationID);
- Sleeping = 0;
- cupsdCheckJobs();
- }
-
- if (sysevent.event & SYSEVENT_NETCHANGED)
- {
- if (!Sleeping)
- {
- cupsdLogMessage(CUPSD_LOG_DEBUG,
- "System network configuration changed");
-
- /*
- * Resetting browse_time before calling cupsdSendBrowseList causes
- * browse packets to be sent for local shared printers.
- */
-
- for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
- p;
- p = (cupsd_printer_t *)cupsArrayNext(Printers))
- p->browse_time = 0;
-
- cupsdSendBrowseList();
- cupsdRestartPolling();
- }
- else
- cupsdLogMessage(CUPSD_LOG_DEBUG,
- "System network configuration changed; "
- "ignored while sleeping");
- }
-
- if (sysevent.event & SYSEVENT_NAMECHANGED)
- {
- if (!Sleeping)
- {
- cupsdLogMessage(CUPSD_LOG_DEBUG, "Computer name changed");
-
- /*
- * De-register the individual printers...
- */
-
- for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
- p;
- p = (cupsd_printer_t *)cupsArrayNext(Printers))
- cupsdDeregisterPrinter(p, 1);
-
- /*
- * Now re-register them...
- */
-
- for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
- p;
- p = (cupsd_printer_t *)cupsArrayNext(Printers))
- {
- p->browse_time = 0;
- cupsdRegisterPrinter(p);
- }
- }
- else
- cupsdLogMessage(CUPSD_LOG_DEBUG,
- "Computer name changed; ignored while sleeping");
- }
- }
-}
-
-
/*
* 'sysEventThreadEntry()' - A thread to receive power and computer name
* change notifications.
threadData->sysevent.event = 0;
}
}
+
+
+/*
+ * 'sysUpdate()' - Update the current system state.
+ */
+
+static void
+sysUpdate(void)
+{
+ int i; /* Looping var */
+ cupsd_sysevent_t sysevent; /* The system event */
+ cupsd_printer_t *p; /* Printer information */
+
+
+ /*
+ * Drain the event pipe...
+ */
+
+ while (read((int)SysEventPipes[0], &sysevent, sizeof(sysevent))
+ == sizeof(sysevent))
+ {
+ if (sysevent.event & SYSEVENT_CANSLEEP)
+ {
+ /*
+ * If there are active printers that don't have the connecting-to-device
+ * printer-state-reason then cancel the sleep request (i.e. this reason
+ * indicates a job that is not yet connected to the printer)...
+ */
+
+ for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
+ p;
+ p = (cupsd_printer_t *)cupsArrayNext(Printers))
+ {
+ if (p->job)
+ {
+ for (i = 0; i < p->num_reasons; i ++)
+ if (!strcmp(p->reasons[i], "connecting-to-device"))
+ break;
+
+ if (!p->num_reasons || i >= p->num_reasons)
+ break;
+ }
+ }
+
+ if (p)
+ {
+ cupsdLogMessage(CUPSD_LOG_INFO,
+ "System sleep canceled because printer %s is active",
+ p->name);
+ IOCancelPowerChange(sysevent.powerKernelPort,
+ sysevent.powerNotificationID);
+ }
+ else
+ {
+ cupsdLogMessage(CUPSD_LOG_DEBUG, "System wants to sleep");
+ IOAllowPowerChange(sysevent.powerKernelPort,
+ sysevent.powerNotificationID);
+ }
+ }
+
+ if (sysevent.event & SYSEVENT_WILLSLEEP)
+ {
+ cupsdLogMessage(CUPSD_LOG_DEBUG, "System going to sleep");
+
+ Sleeping = 1;
+
+ cupsdStopAllJobs(0);
+
+ for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
+ p;
+ p = (cupsd_printer_t *)cupsArrayNext(Printers))
+ {
+ if (p->type & CUPS_PRINTER_DISCOVERED)
+ {
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "Deleting remote destination \"%s\"", p->name);
+ cupsArraySave(Printers);
+ cupsdDeletePrinter(p, 0);
+ cupsArrayRestore(Printers);
+ }
+ else
+ {
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "Deregistering local printer \"%s\"", p->name);
+ cupsdDeregisterPrinter(p, 0);
+ }
+ }
+
+ cupsdCleanDirty();
+
+ IOAllowPowerChange(sysevent.powerKernelPort,
+ sysevent.powerNotificationID);
+ }
+
+ if (sysevent.event & SYSEVENT_WOKE)
+ {
+ cupsdLogMessage(CUPSD_LOG_DEBUG, "System woke from sleep");
+ IOAllowPowerChange(sysevent.powerKernelPort,
+ sysevent.powerNotificationID);
+ Sleeping = 0;
+ cupsdCheckJobs();
+ }
+
+ if (sysevent.event & SYSEVENT_NETCHANGED)
+ {
+ if (!Sleeping)
+ {
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "System network configuration changed");
+
+ /*
+ * Resetting browse_time before calling cupsdSendBrowseList causes
+ * browse packets to be sent for local shared printers.
+ */
+
+ for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
+ p;
+ p = (cupsd_printer_t *)cupsArrayNext(Printers))
+ p->browse_time = 0;
+
+ cupsdSendBrowseList();
+ cupsdRestartPolling();
+ }
+ else
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "System network configuration changed; "
+ "ignored while sleeping");
+ }
+
+ if (sysevent.event & SYSEVENT_NAMECHANGED)
+ {
+ if (!Sleeping)
+ {
+ cupsdLogMessage(CUPSD_LOG_DEBUG, "Computer name changed");
+
+ /*
+ * De-register the individual printers...
+ */
+
+ for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
+ p;
+ p = (cupsd_printer_t *)cupsArrayNext(Printers))
+ cupsdDeregisterPrinter(p, 1);
+
+ /*
+ * Update the computer name...
+ */
+
+ cupsdUpdateDNSSDName();
+
+ /*
+ * Now re-register them...
+ */
+
+ for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
+ p;
+ p = (cupsd_printer_t *)cupsArrayNext(Printers))
+ {
+ p->browse_time = 0;
+ cupsdRegisterPrinter(p);
+ }
+ }
+ else
+ cupsdLogMessage(CUPSD_LOG_DEBUG,
+ "Computer name changed; ignored while sleeping");
+ }
+ }
+}
#endif /* __APPLE__ */
/*
- * End of "$Id: sysman.c 6649 2007-07-11 21:46:42Z mike $".
+ * End of "$Id: sysman.c 7928 2008-09-10 22:14:22Z mike $".
*/
projects / thirdparty / cups.git / blobdiff