2 * Manipulation routines for Job Control Records
4 * Kern E. Sibbald, December 2000
8 * These routines are thread safe.
12 Copyright (C) 2000-2004 Kern Sibbald and John Walker
14 This program is free software; you can redistribute it and/or
15 modify it under the terms of the GNU General Public License as
16 published by the Free Software Foundation; either version 2 of
17 the License, or (at your option) any later version.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 General Public License for more details.
24 You should have received a copy of the GNU General Public
25 License along with this program; if not, write to the Free
26 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
34 /* External variables we reference */
35 extern time_t watchdog_time;
37 /* Forward referenced functions */
38 static void timeout_handler(int sig);
39 static void jcr_timeout_check(watchdog_t *self);
42 dlist *last_jobs = NULL;
43 const int max_last_jobs = 10;
45 static JCR *jobs = NULL; /* pointer to JCR chain */
46 static brwlock_t lock; /* lock for last jobs and JCR chain */
48 void init_last_jobs_list()
51 struct s_last_job *job_entry = NULL;
53 last_jobs = new dlist(job_entry, &job_entry->link);
54 if ((errstat=rwl_init(&lock)) != 0) {
55 Emsg1(M_ABORT, 0, _("Unable to initialize jcr_chain lock. ERR=%s\n"),
62 void term_last_jobs_list()
65 while (!last_jobs->empty()) {
66 void *je = last_jobs->first();
67 last_jobs->remove(je);
76 void read_last_jobs_list(int fd, uint64_t addr)
78 struct s_last_job *je, job;
81 Dmsg1(100, "read_last_jobs seek to %d\n", (int)addr);
82 if (addr == 0 || lseek(fd, addr, SEEK_SET) < 0) {
85 if (read(fd, &num, sizeof(num)) != sizeof(num)) {
88 Dmsg1(100, "Read num_items=%d\n", num);
89 if (num > 4 * max_last_jobs) { /* sanity check */
93 if (read(fd, &job, sizeof(job)) != sizeof(job)) {
94 Dmsg1(000, "Read job entry. ERR=%s\n", strerror(errno));
98 je = (struct s_last_job *)malloc(sizeof(struct s_last_job));
99 memcpy((char *)je, (char *)&job, sizeof(job));
101 init_last_jobs_list();
103 last_jobs->append(je);
104 if (last_jobs->size() > max_last_jobs) {
105 je = (struct s_last_job *)last_jobs->first();
106 last_jobs->remove(je);
113 uint64_t write_last_jobs_list(int fd, uint64_t addr)
115 struct s_last_job *je;
118 Dmsg1(100, "write_last_jobs seek to %d\n", (int)addr);
119 if (lseek(fd, addr, SEEK_SET) < 0) {
123 /* First record is number of entires */
124 num = last_jobs->size();
125 if (write(fd, &num, sizeof(num)) != sizeof(num)) {
126 Dmsg1(000, "Error writing num_items: ERR=%s\n", strerror(errno));
129 foreach_dlist(je, last_jobs) {
130 if (write(fd, je, sizeof(struct s_last_job)) != sizeof(struct s_last_job)) {
131 Dmsg1(000, "Error writing job: ERR=%s\n", strerror(errno));
136 /* Return current address */
137 ssize_t stat = lseek(fd, 0, SEEK_CUR);
145 void lock_last_jobs_list()
147 /* Use jcr chain mutex */
151 void unlock_last_jobs_list()
153 /* Use jcr chain mutex */
158 * Push a subroutine address into the job end callback stack
160 void job_end_push(JCR *jcr, void job_end_cb(JCR *jcr))
162 jcr->job_end_push.prepend((void *)job_end_cb);
165 /* Pop each job_end subroutine and call it */
166 static void job_end_pop(JCR *jcr)
168 void (*job_end_cb)(JCR *jcr);
169 for (int i=0; i<jcr->job_end_push.size(); i++) {
170 job_end_cb = (void (*)(JCR *))jcr->job_end_push.get(i);
176 * Create a Job Control Record and link it into JCR chain
177 * Returns newly allocated JCR
178 * Note, since each daemon has a different JCR, he passes
181 JCR *new_jcr(int size, JCR_free_HANDLER *daemon_free_jcr)
184 MQUEUE_ITEM *item = NULL;
185 struct sigaction sigtimer;
187 Dmsg0(400, "Enter new_jcr\n");
188 jcr = (JCR *)malloc(size);
189 memset(jcr, 0, size);
190 jcr->msg_queue = new dlist(item, &item->link);
191 jcr->job_end_push.init(1, false);
192 jcr->sched_time = time(NULL);
193 jcr->daemon_free_jcr = daemon_free_jcr; /* plug daemon free routine */
195 pthread_mutex_init(&(jcr->mutex), NULL);
196 jcr->JobStatus = JS_Created; /* ready to run */
197 jcr->VolumeName = get_pool_memory(PM_FNAME);
198 jcr->VolumeName[0] = 0;
199 jcr->errmsg = get_pool_memory(PM_MESSAGE);
201 /* Setup some dummy values */
202 jcr->Job[0] = 0; /* no job name by default */
204 jcr->JobType = JT_SYSTEM; /* internal job until defined */
205 jcr->JobLevel = L_NONE;
206 jcr->JobStatus = JS_Created;
208 sigtimer.sa_flags = 0;
209 sigtimer.sa_handler = timeout_handler;
210 sigfillset(&sigtimer.sa_mask);
211 sigaction(TIMEOUT_SIGNAL, &sigtimer, NULL);
226 * Remove a JCR from the chain
227 * NOTE! The chain must be locked prior to calling
230 static void remove_jcr(JCR *jcr)
232 Dmsg0(400, "Enter remove_jcr\n");
234 Emsg0(M_ABORT, 0, "NULL jcr.\n");
236 if (!jcr->prev) { /* if no prev */
237 jobs = jcr->next; /* set new head */
239 jcr->prev->next = jcr->next; /* update prev */
242 jcr->next->prev = jcr->prev;
244 Dmsg0(400, "Leave remove_jcr\n");
248 * Free stuff common to all JCRs. N.B. Be careful to include only
249 * generic stuff in the common part of the jcr.
251 static void free_common_jcr(JCR *jcr)
253 struct s_last_job *je, last_job;
255 /* Keep some statistics */
256 switch (jcr->JobType) {
262 last_job.JobType = jcr->JobType;
263 last_job.JobId = jcr->JobId;
264 last_job.VolSessionId = jcr->VolSessionId;
265 last_job.VolSessionTime = jcr->VolSessionTime;
266 bstrncpy(last_job.Job, jcr->Job, sizeof(last_job.Job));
267 last_job.JobFiles = jcr->JobFiles;
268 last_job.JobBytes = jcr->JobBytes;
269 last_job.JobStatus = jcr->JobStatus;
270 last_job.JobLevel = jcr->JobLevel;
271 last_job.start_time = jcr->start_time;
272 last_job.end_time = time(NULL);
273 /* Keep list of last jobs, but not Console where JobId==0 */
274 if (last_job.JobId > 0) {
275 je = (struct s_last_job *)malloc(sizeof(struct s_last_job));
276 memcpy((char *)je, (char *)&last_job, sizeof(last_job));
278 init_last_jobs_list();
280 last_jobs->append(je);
281 if (last_jobs->size() > max_last_jobs) {
282 je = (struct s_last_job *)last_jobs->first();
283 last_jobs->remove(je);
291 pthread_mutex_destroy(&jcr->mutex);
293 delete jcr->msg_queue;
294 close_msg(jcr); /* close messages for this job */
296 /* do this after closing messages */
297 if (jcr->client_name) {
298 free_pool_memory(jcr->client_name);
299 jcr->client_name = NULL;
302 if (jcr->sd_auth_key) {
303 free(jcr->sd_auth_key);
304 jcr->sd_auth_key = NULL;
306 if (jcr->VolumeName) {
307 free_pool_memory(jcr->VolumeName);
308 jcr->VolumeName = NULL;
311 if (jcr->dir_bsock) {
312 bnet_close(jcr->dir_bsock);
313 jcr->dir_bsock = NULL;
316 free_pool_memory(jcr->errmsg);
323 if (jcr->cached_path) {
324 free_pool_memory(jcr->cached_path);
325 jcr->cached_path = NULL;
328 free_getuser_cache();
329 free_getgroup_cache();
334 * Global routine to free a jcr
337 void b_free_jcr(const char *file, int line, JCR *jcr)
339 Dmsg3(400, "Enter free_jcr 0x%x from %s:%d\n", jcr, file, line);
343 void free_jcr(JCR *jcr)
346 Dmsg1(400, "Enter free_jcr 0x%x\n", jcr);
351 jcr->use_count--; /* decrement use count */
352 if (jcr->use_count < 0) {
353 Emsg2(M_ERROR, 0, _("JCR use_count=%d JobId=%d\n"),
354 jcr->use_count, jcr->JobId);
356 Dmsg3(400, "Dec free_jcr 0x%x use_count=%d jobid=%d\n", jcr, jcr->use_count, jcr->JobId);
357 if (jcr->use_count > 0) { /* if in use */
359 Dmsg2(400, "free_jcr 0x%x use_count=%d\n", jcr, jcr->use_count);
362 dequeue_messages(jcr);
364 job_end_pop(jcr); /* pop and call hooked routines */
366 Dmsg1(400, "End job=%d\n", jcr->JobId);
367 if (jcr->daemon_free_jcr) {
368 jcr->daemon_free_jcr(jcr); /* call daemon free routine */
371 free_common_jcr(jcr);
373 close_msg(NULL); /* flush any daemon messages */
375 Dmsg0(400, "Exit free_jcr\n");
380 * Global routine to free a jcr
381 * JCR chain is already locked
383 void free_locked_jcr(JCR *jcr)
385 jcr->use_count--; /* decrement use count */
386 Dmsg2(400, "Dec free_locked_jcr 0x%x use_count=%d\n", jcr, jcr->use_count);
387 if (jcr->use_count > 0) { /* if in use */
391 jcr->daemon_free_jcr(jcr); /* call daemon free routine */
392 free_common_jcr(jcr);
398 * Given a JobId, find the JCR
399 * Returns: jcr on success
402 JCR *get_jcr_by_id(uint32_t JobId)
406 lock_jcr_chain(); /* lock chain */
407 for (jcr = jobs; jcr; jcr=jcr->next) {
408 if (jcr->JobId == JobId) {
412 Dmsg2(400, "Inc get_jcr 0x%x use_count=%d\n", jcr, jcr->use_count);
421 * Given a SessionId and SessionTime, find the JCR
422 * Returns: jcr on success
425 JCR *get_jcr_by_session(uint32_t SessionId, uint32_t SessionTime)
430 for (jcr = jobs; jcr; jcr=jcr->next) {
431 if (jcr->VolSessionId == SessionId &&
432 jcr->VolSessionTime == SessionTime) {
436 Dmsg2(400, "Inc get_jcr 0x%x use_count=%d\n", jcr, jcr->use_count);
446 * Given a Job, find the JCR
447 * compares on the number of characters in Job
448 * thus allowing partial matches.
449 * Returns: jcr on success
452 JCR *get_jcr_by_partial_name(char *Job)
462 for (jcr = jobs; jcr; jcr=jcr->next) {
463 if (strncmp(Job, jcr->Job, len) == 0) {
467 Dmsg2(400, "Inc get_jcr 0x%x use_count=%d\n", jcr, jcr->use_count);
477 * Given a Job, find the JCR
478 * requires an exact match of names.
479 * Returns: jcr on success
482 JCR *get_jcr_by_full_name(char *Job)
490 for (jcr = jobs; jcr; jcr=jcr->next) {
491 if (strcmp(jcr->Job, Job) == 0) {
495 Dmsg2(400, "Inc get_jcr 0x%x use_count=%d\n", jcr, jcr->use_count);
503 void set_jcr_job_status(JCR *jcr, int JobStatus)
506 * For a set of errors, ... keep the current status
507 * so it isn't lost. For all others, set it.
509 switch (jcr->JobStatus) {
510 case JS_ErrorTerminated:
517 jcr->JobStatus = JobStatus;
524 void lock_jcr_chain()
527 if ((errstat=rwl_writelock(&lock)) != 0) {
528 Emsg1(M_ABORT, 0, "rwl_writelock failure. ERR=%s\n",
536 void unlock_jcr_chain()
539 if ((errstat=rwl_writeunlock(&lock)) != 0) {
540 Emsg1(M_ABORT, 0, "rwl_writeunlock failure. ERR=%s\n",
546 JCR *get_next_jcr(JCR *prev_jcr)
550 if (prev_jcr == NULL) {
553 jcr = prev_jcr->next;
559 Dmsg2(400, "Inc get_next_jcr 0x%x use_count=%d\n", jcr, jcr->use_count);
564 bool init_jcr_subsystem(void)
566 watchdog_t *wd = new_watchdog();
568 wd->one_shot = false;
569 wd->interval = 30; /* FIXME: should be configurable somewhere, even
570 if only with a #define */
571 wd->callback = jcr_timeout_check;
573 register_watchdog(wd);
578 static void jcr_timeout_check(watchdog_t *self)
584 Dmsg0(400, "Start JCR timeout checks\n");
586 /* Walk through all JCRs checking if any one is
587 * blocked for more than specified max time.
591 free_locked_jcr(jcr); /* OK to free now cuz chain is locked */
592 if (jcr->JobId == 0) {
595 fd = jcr->store_bsock;
597 timer_start = fd->timer_start;
598 if (timer_start && (watchdog_time - timer_start) > fd->timeout) {
599 fd->timer_start = 0; /* turn off timer */
600 fd->timed_out = TRUE;
601 Jmsg(jcr, M_ERROR, 0, _(
602 "Watchdog sending kill after %d secs to thread stalled reading Storage daemon.\n"),
603 watchdog_time - timer_start);
604 pthread_kill(jcr->my_thread_id, TIMEOUT_SIGNAL);
607 fd = jcr->file_bsock;
609 timer_start = fd->timer_start;
610 if (timer_start && (watchdog_time - timer_start) > fd->timeout) {
611 fd->timer_start = 0; /* turn off timer */
612 fd->timed_out = TRUE;
613 Jmsg(jcr, M_ERROR, 0, _(
614 "Watchdog sending kill after %d secs to thread stalled reading File daemon.\n"),
615 watchdog_time - timer_start);
616 pthread_kill(jcr->my_thread_id, TIMEOUT_SIGNAL);
621 timer_start = fd->timer_start;
622 if (timer_start && (watchdog_time - timer_start) > fd->timeout) {
623 fd->timer_start = 0; /* turn off timer */
624 fd->timed_out = TRUE;
625 Jmsg(jcr, M_ERROR, 0, _(
626 "Watchdog sending kill after %d secs to thread stalled reading Director.\n"),
627 watchdog_time - timer_start);
628 pthread_kill(jcr->my_thread_id, TIMEOUT_SIGNAL);
635 Dmsg0(400, "Finished JCR timeout checks\n");
639 * Timeout signal comes here
641 static void timeout_handler(int sig)
643 return; /* thus interrupting the function */