sysmocom
/
asterisk
11
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Change channel list to read/write list... I'm crazy. 

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@68685 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Joshua Colp 2007-06-11 14:41:39 +00:00
parent eb56cb6b92
commit a9043635ed
1 changed files with 35 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
main/channel.c
View File

@ -126,7 +126,7 @@ static AST_LIST_HEAD_NOLOCK_STATIC(backends, chanlist);
/*! \brief the list of channels we have. Note that the lock for this list is used for
both the channels list and the backends list. */
static AST_LIST_HEAD_STATIC(channels, ast_channel);
static AST_RWLIST_HEAD_STATIC(channels, ast_channel);
/*! \brief map AST_CAUSE's to readable string representations
*
@ -208,7 +208,7 @@ static int show_channeltypes(int fd, int argc, char *argv[])
ast_cli(fd, FORMAT, "Type", "Description", "Devicestate", "Indications", "Transfer");
ast_cli(fd, FORMAT, "----------", "-----------", "-----------", "-----------", "--------");
if (AST_LIST_LOCK(&channels)) {
if (AST_RWLIST_RDLOCK(&channels)) {
ast_log(LOG_WARNING, "Unable to lock channel list\n");
return -1;
}
@ -219,7 +219,7 @@ static int show_channeltypes(int fd, int argc, char *argv[])
(cl->tech->transfer) ? "yes" : "no");
count_chan++;
}
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
ast_cli(fd, "----------\n%d channel drivers registered.\n", count_chan);
return RESULT_SUCCESS;
@ -235,7 +235,7 @@ static int show_channeltype(int fd, int argc, char *argv[])
if (argc != 4)
return RESULT_SHOWUSAGE;
if (AST_LIST_LOCK(&channels)) {
if (AST_RWLIST_RDLOCK(&channels)) {
ast_log(LOG_WARNING, "Unable to lock channel list\n");
return RESULT_FAILURE;
}
@ -249,7 +249,7 @@ static int show_channeltype(int fd, int argc, char *argv[])
if (!cl) {
ast_cli(fd, "\n%s is not a registered channel driver.\n", argv[3]);
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
return RESULT_FAILURE;
}
@ -277,7 +277,7 @@ static int show_channeltype(int fd, int argc, char *argv[])
);
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
return RESULT_SUCCESS;
}
@ -351,10 +351,10 @@ void ast_begin_shutdown(int hangup)
struct ast_channel *c;
shutting_down = 1;
if (hangup) {
AST_LIST_LOCK(&channels);
AST_LIST_TRAVERSE(&channels, c, chan_list)
AST_RWLIST_RDLOCK(&channels);
AST_RWLIST_TRAVERSE(&channels, c, chan_list)
ast_softhangup(c, AST_SOFTHANGUP_SHUTDOWN);
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
}
}
@ -363,10 +363,10 @@ int ast_active_channels(void)
{
struct ast_channel *c;
int cnt = 0;
AST_LIST_LOCK(&channels);
AST_LIST_TRAVERSE(&channels, c, chan_list)
AST_RWLIST_RDLOCK(&channels);
AST_RWLIST_TRAVERSE(&channels, c, chan_list)
cnt++;
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
return cnt;
}
@ -417,18 +417,18 @@ int ast_channel_register(const struct ast_channel_tech *tech)
{
struct chanlist *chan;
AST_LIST_LOCK(&channels);
AST_RWLIST_WRLOCK(&channels);
AST_LIST_TRAVERSE(&backends, chan, list) {
if (!strcasecmp(tech->type, chan->tech->type)) {
ast_log(LOG_WARNING, "Already have a handler for type '%s'\n", tech->type);
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
return -1;
}
}
if (!(chan = ast_calloc(1, sizeof(*chan)))) {
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
return -1;
}
chan->tech = tech;
@ -441,7 +441,7 @@ int ast_channel_register(const struct ast_channel_tech *tech)
ast_verbose(VERBOSE_PREFIX_2 "Registered channel type '%s' (%s)\n", chan->tech->type,
chan->tech->description);
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
return 0;
}
@ -453,7 +453,7 @@ void ast_channel_unregister(const struct ast_channel_tech *tech)
if (option_debug)
ast_log(LOG_DEBUG, "Unregistering channel type '%s'\n", tech->type);
AST_LIST_LOCK(&channels);
AST_RWLIST_WRLOCK(&channels);
AST_LIST_TRAVERSE_SAFE_BEGIN(&backends, chan, list) {
if (chan->tech == tech) {
@ -466,7 +466,7 @@ void ast_channel_unregister(const struct ast_channel_tech *tech)
}
AST_LIST_TRAVERSE_SAFE_END
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
}
/*! \brief Get handle to channel driver based on name */
@ -475,7 +475,7 @@ const struct ast_channel_tech *ast_get_channel_tech(const char *name)
struct chanlist *chanls;
const struct ast_channel_tech *ret = NULL;
if (AST_LIST_LOCK(&channels)) {
if (AST_RWLIST_RDLOCK(&channels)) {
ast_log(LOG_WARNING, "Unable to lock channel tech list\n");
return NULL;
}
@ -487,7 +487,7 @@ const struct ast_channel_tech *ast_get_channel_tech(const char *name)
}
}
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
return ret;
}
@ -788,9 +788,9 @@ struct ast_channel *ast_channel_alloc(int needqueue, int state, const char *cid_
tmp->tech = &null_tech;
AST_LIST_LOCK(&channels);
AST_LIST_INSERT_HEAD(&channels, tmp, chan_list);
AST_LIST_UNLOCK(&channels);
AST_RWLIST_WRLOCK(&channels);
AST_RWLIST_INSERT_HEAD(&channels, tmp, chan_list);
AST_RWLIST_UNLOCK(&channels);
return tmp;
}
@ -939,13 +939,13 @@ static struct ast_channel *channel_find_locked(const struct ast_channel *prev,
for (retries = 0; retries < 10; retries++) {
int done;
AST_LIST_LOCK(&channels);
AST_LIST_TRAVERSE(&channels, c, chan_list) {
AST_RWLIST_RDLOCK(&channels);
AST_RWLIST_TRAVERSE(&channels, c, chan_list) {
if (prev) { /* look for next item */
if (c != prev) /* not this one */
continue;
/* found, prepare to return c->next */
if ((c = AST_LIST_NEXT(c, chan_list)) == NULL) break;
if ((c = AST_RWLIST_NEXT(c, chan_list)) == NULL) break;
/* If prev was the last item on the channel list, then we just
* want to return NULL, instead of trying to deref NULL in the
* next section.
@ -994,7 +994,7 @@ static struct ast_channel *channel_find_locked(const struct ast_channel *prev,
}
}
}
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
if (done)
return c;
usleep(1); /* give other threads a chance before retrying */
@ -1095,9 +1095,9 @@ void ast_channel_free(struct ast_channel *chan)
headp=&chan->varshead;
AST_LIST_LOCK(&channels);
if (!AST_LIST_REMOVE(&channels, chan, chan_list)) {
AST_LIST_UNLOCK(&channels);
AST_RWLIST_WRLOCK(&channels);
if (!AST_RWLIST_REMOVE(&channels, chan, chan_list)) {
AST_RWLIST_UNLOCK(&channels);
ast_log(LOG_ERROR, "Unable to find channel in list to free. Assuming it has already been done.\n");
}
/* Lock and unlock the channel just to be sure nobody
@ -1164,7 +1164,7 @@ void ast_channel_free(struct ast_channel *chan)
ast_string_field_free_pools(chan);
ast_free(chan);
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
ast_device_state_changed_literal(name);
}
@ -3096,7 +3096,7 @@ struct ast_channel *ast_request(const char *type, int format, void *data, int *c
cause = &foo;
*cause = AST_CAUSE_NOTDEFINED;
if (AST_LIST_LOCK(&channels)) {
if (AST_RWLIST_RDLOCK(&channels)) {
ast_log(LOG_WARNING, "Unable to lock channel list\n");
return NULL;
}
@ -3111,10 +3111,10 @@ struct ast_channel *ast_request(const char *type, int format, void *data, int *c
if (res < 0) {
ast_log(LOG_WARNING, "No translator path exists for channel type %s (native %d) to %d\n", type, chan->tech->capabilities, format);
*cause = AST_CAUSE_BEARERCAPABILITY_NOTAVAIL;
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
return NULL;
}
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
if (!chan->tech->requester)
return NULL;
@ -3127,7 +3127,7 @@ struct ast_channel *ast_request(const char *type, int format, void *data, int *c
ast_log(LOG_WARNING, "No channel type registered for '%s'\n", type);
*cause = AST_CAUSE_NOSUCHDRIVER;
AST_LIST_UNLOCK(&channels);
AST_RWLIST_UNLOCK(&channels);
return NULL;
}