- Don't lock the dialoglist during the whole destruction of a single SIP dialog. Only
lock when needed - when we remove the dialog from the dialog list If this doesn't lead to severe problems, it might help with some locking issues in 1.4/1.2. - Remove the term "interface" as a synonym for a SIP dialog. Sorry, Mark, but no one understands it... ;-) git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@46379 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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6948019465
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0f9a1b19f1
1 changed files with 50 additions and 49 deletions
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@ -561,7 +561,7 @@ static int regobjs = 0; /*!< Registry objects */
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static struct ast_flags global_flags[2] = {{0}}; /*!< global SIP_ flags */
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/*! \brief Protect the SIP dialog list (of sip_pvt's) */
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AST_MUTEX_DEFINE_STATIC(iflock);
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AST_MUTEX_DEFINE_STATIC(dialoglock);
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AST_MUTEX_DEFINE_STATIC(netlock);
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@ -989,7 +989,7 @@ struct sip_pvt {
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int autoframing;
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};
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static struct sip_pvt *iflist = NULL;
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static struct sip_pvt *dialoglist = NULL;
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#define FLAG_RESPONSE (1 << 0)
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#define FLAG_FATAL (1 << 1)
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@ -2970,12 +2970,15 @@ static void __sip_destroy(struct sip_pvt *p, int lockowner)
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p->history = NULL;
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}
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for (prev = NULL, cur = iflist; cur; prev = cur, cur = cur->next) {
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/* Lock dialog list before removing ourselves from the list */
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ast_mutex_lock(&dialoglock);
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for (prev = NULL, cur = dialoglist; cur; prev = cur, cur = cur->next) {
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if (cur == p) {
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UNLINK(cur, iflist, prev);
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UNLINK(cur, dialoglist, prev);
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break;
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}
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}
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ast_mutex_unlock(&dialoglock);
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if (!cur) {
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ast_log(LOG_WARNING, "Trying to destroy \"%s\", not found in dialog list?!?! \n", p->callid);
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return;
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@ -3121,11 +3124,9 @@ static int update_call_counter(struct sip_pvt *fup, int event)
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/*! \brief Destroy SIP call structure */
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static void sip_destroy(struct sip_pvt *p)
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{
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ast_mutex_lock(&iflock);
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if (option_debug > 2)
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ast_log(LOG_DEBUG, "Destroying SIP dialog %s\n", p->callid);
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__sip_destroy(p, 1);
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ast_mutex_unlock(&iflock);
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}
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/*! \brief Convert SIP hangup causes to Asterisk hangup causes */
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@ -4288,10 +4289,10 @@ static struct sip_pvt *sip_alloc(ast_string_field callid, struct sockaddr_in *si
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ast_string_field_set(p, context, default_context);
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/* Add to active dialog list */
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ast_mutex_lock(&iflock);
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p->next = iflist;
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iflist = p;
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ast_mutex_unlock(&iflock);
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ast_mutex_lock(&dialoglock);
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p->next = dialoglist;
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dialoglist = p;
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ast_mutex_unlock(&dialoglock);
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if (option_debug)
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ast_log(LOG_DEBUG, "Allocating new SIP dialog for %s - %s (%s)\n", callid ? callid : "(No Call-ID)", sip_methods[intended_method].text, p->rtp ? "With RTP" : "No RTP");
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return p;
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@ -4333,8 +4334,8 @@ static struct sip_pvt *find_call(struct sip_request *req, struct sockaddr_in *si
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ast_log(LOG_DEBUG, "= Looking for Call ID: %s (Checking %s) --From tag %s --To-tag %s \n", callid, req->method==SIP_RESPONSE ? "To" : "From", fromtag, totag);
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}
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ast_mutex_lock(&iflock);
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for (p = iflist; p; p = p->next) {
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ast_mutex_lock(&dialoglock);
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for (p = dialoglist; p; p = p->next) {
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/* In pedantic, we do not want packets with bad syntax to be connected to a PVT */
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int found = FALSE;
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if (req->method == SIP_REGISTER)
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@ -4364,11 +4365,11 @@ static struct sip_pvt *find_call(struct sip_request *req, struct sockaddr_in *si
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if (found) {
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/* Found the call */
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sip_pvt_lock(p);
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ast_mutex_unlock(&iflock);
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ast_mutex_unlock(&dialoglock);
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return p;
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}
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}
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ast_mutex_unlock(&iflock);
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ast_mutex_unlock(&dialoglock);
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/* See if the method is capable of creating a dialog */
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if (sip_methods[intended_method].can_create == CAN_CREATE_DIALOG) {
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@ -8494,7 +8495,7 @@ static int get_destination(struct sip_pvt *p, struct sip_request *oreq)
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return -1;
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}
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/*! \brief Lock interface lock and find matching pvt lock
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/*! \brief Lock dialog lock and find matching pvt lock
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- Their tag is fromtag, our tag is to-tag
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- This means that in some transactions, totag needs to be their tag :-)
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depending upon the direction
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@ -8503,13 +8504,13 @@ static struct sip_pvt *get_sip_pvt_byid_locked(const char *callid, const char *t
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{
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struct sip_pvt *sip_pvt_ptr;
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ast_mutex_lock(&iflock);
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ast_mutex_lock(&dialoglock);
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if (option_debug > 3 && totag)
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ast_log(LOG_DEBUG, "Looking for callid %s (fromtag %s totag %s)\n", callid, fromtag ? fromtag : "<no fromtag>", totag ? totag : "<no totag>");
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/* Search interfaces and find the match */
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for (sip_pvt_ptr = iflist; sip_pvt_ptr; sip_pvt_ptr = sip_pvt_ptr->next) {
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/* Search dialogs and find the match */
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for (sip_pvt_ptr = dialoglist; sip_pvt_ptr; sip_pvt_ptr = sip_pvt_ptr->next) {
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if (!strcmp(sip_pvt_ptr->callid, callid)) {
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int match = 1;
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char *ourtag = sip_pvt_ptr->tag;
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break;
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}
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}
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ast_mutex_unlock(&iflock);
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ast_mutex_unlock(&dialoglock);
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if (option_debug > 3 && !sip_pvt_ptr)
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ast_log(LOG_DEBUG, "Found no match for callid %s to-tag %s from-tag %s\n", callid, totag, fromtag);
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return sip_pvt_ptr;
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@ -10404,8 +10405,8 @@ static int __sip_show_channels(int fd, int argc, char *argv[], int subscriptions
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if (argc != 3)
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return RESULT_SHOWUSAGE;
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ast_mutex_lock(&iflock);
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cur = iflist;
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ast_mutex_lock(&dialoglock);
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cur = dialoglist;
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if (!subscriptions)
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ast_cli(fd, FORMAT2, "Peer", "User/ANR", "Call ID", "Seq (Tx/Rx)", "Format", "Hold", "Last Message");
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else
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@ -10441,7 +10442,7 @@ static int __sip_show_channels(int fd, int argc, char *argv[], int subscriptions
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numchans++;
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}
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}
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ast_mutex_unlock(&iflock);
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ast_mutex_unlock(&dialoglock);
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if (!subscriptions)
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ast_cli(fd, "%d active SIP channel%s\n", numchans, (numchans != 1) ? "s" : "");
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else
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@ -10460,14 +10461,14 @@ static char *complete_sipch(const char *line, const char *word, int pos, int sta
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char *c = NULL;
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int wordlen = strlen(word);
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ast_mutex_lock(&iflock);
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for (cur = iflist; cur; cur = cur->next) {
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ast_mutex_lock(&dialoglock);
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for (cur = dialoglist; cur; cur = cur->next) {
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if (!strncasecmp(word, cur->callid, wordlen) && ++which > state) {
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c = ast_strdup(cur->callid);
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break;
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}
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}
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ast_mutex_unlock(&iflock);
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ast_mutex_unlock(&dialoglock);
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return c;
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}
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@ -10592,8 +10593,8 @@ static int sip_show_channel(int fd, int argc, char *argv[])
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if (argc != 4)
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return RESULT_SHOWUSAGE;
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len = strlen(argv[3]);
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ast_mutex_lock(&iflock);
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for (cur = iflist; cur; cur = cur->next) {
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ast_mutex_lock(&dialoglock);
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for (cur = dialoglist; cur; cur = cur->next) {
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if (!strncasecmp(cur->callid, argv[3], len)) {
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char formatbuf[BUFSIZ/2];
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ast_cli(fd,"\n");
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found++;
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}
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}
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ast_mutex_unlock(&iflock);
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ast_mutex_unlock(&dialoglock);
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if (!found)
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ast_cli(fd, "No such SIP Call ID starting with '%s'\n", argv[3]);
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return RESULT_SUCCESS;
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if (!recordhistory)
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ast_cli(fd, "\n***Note: History recording is currently DISABLED. Use 'sip history' to ENABLE.\n");
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len = strlen(argv[3]);
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ast_mutex_lock(&iflock);
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for (cur = iflist; cur; cur = cur->next) {
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ast_mutex_lock(&dialoglock);
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for (cur = dialoglist; cur; cur = cur->next) {
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if (!strncasecmp(cur->callid, argv[3], len)) {
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struct sip_history *hist;
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int x = 0;
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found++;
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}
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}
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ast_mutex_unlock(&iflock);
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ast_mutex_unlock(&dialoglock);
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if (!found)
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ast_cli(fd, "No such SIP Call ID starting with '%s'\n", argv[3]);
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return RESULT_SUCCESS;
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for it to expire and send NOTIFY messages to the peer only to have them
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ignored (or generate errors)
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*/
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ast_mutex_lock(&iflock);
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for (p_old = iflist; p_old; p_old = p_old->next) {
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ast_mutex_lock(&dialoglock);
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for (p_old = dialoglist; p_old; p_old = p_old->next) {
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if (p_old == p)
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continue;
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if (p_old->initreq.method != SIP_SUBSCRIBE)
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}
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sip_pvt_unlock(p_old);
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}
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ast_mutex_unlock(&iflock);
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ast_mutex_unlock(&dialoglock);
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}
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if (!p->expiry)
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ast_set_flag(&p->flags[0], SIP_NEEDDESTROY);
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if (sipsock > -1)
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sipsock_read_id = ast_io_change(io, sipsock_read_id, sipsock, NULL, 0, NULL);
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}
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/* Check for interfaces needing to be killed */
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ast_mutex_lock(&iflock);
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/* Check for dialogs needing to be killed */
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ast_mutex_lock(&dialoglock);
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restartsearch:
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t = time(NULL);
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/* don't scan the interface list if it hasn't been a reasonable period
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/* don't scan the dialogs list if it hasn't been a reasonable period
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of time since the last time we did it (when MWI is being sent, we can
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get back to this point every millisecond or less)
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*/
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for (sip = iflist; !fastrestart && sip; sip = sip->next) {
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for (sip = dialoglist; !fastrestart && sip; sip = sip->next) {
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sip_pvt_lock(sip);
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/* Check RTP timeouts and kill calls if we have a timeout set and do not get RTP */
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check_rtp_timeout(sip, t);
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}
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sip_pvt_unlock(sip);
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}
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ast_mutex_unlock(&iflock);
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ast_mutex_unlock(&dialoglock);
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pthread_testcancel();
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/* Wait for sched or io */
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@ -16025,7 +16026,7 @@ static int reload_config(enum channelreloadreason reason)
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if (!ast_jb_read_conf(&global_jbconf, v->name, v->value))
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continue;
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/* Create the interface list */
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/* Create the dialogs list */
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if (!strcasecmp(v->name, "context")) {
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ast_copy_string(default_context, v->value, sizeof(default_context));
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} else if (!strcasecmp(v->name, "realm")) {
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ast_manager_unregister("SIPpeers");
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ast_manager_unregister("SIPshowpeer");
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ast_mutex_lock(&iflock);
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/* Hangup all interfaces if they have an owner */
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for (p = iflist; p ; p = p->next) {
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ast_mutex_lock(&dialoglock);
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/* Hangup all dialogs if they have an owner */
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for (p = dialoglist; p ; p = p->next) {
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if (p->owner)
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ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
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}
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ast_mutex_unlock(&iflock);
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ast_mutex_unlock(&dialoglock);
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ast_mutex_lock(&monlock);
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if (monitor_thread && (monitor_thread != AST_PTHREADT_STOP)) {
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monitor_thread = AST_PTHREADT_STOP;
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ast_mutex_unlock(&monlock);
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ast_mutex_lock(&iflock);
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/* Destroy all the interfaces and free their memory */
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p = iflist;
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ast_mutex_lock(&dialoglock);
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/* Destroy all the dialogs and free their memory */
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p = dialoglist;
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while (p) {
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pl = p;
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p = p->next;
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}
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free(pl);
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}
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iflist = NULL;
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ast_mutex_unlock(&iflock);
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dialoglist = NULL;
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ast_mutex_unlock(&dialoglock);
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/* Free memory for local network address mask */
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ast_free_ha(localaddr);
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