kenmirrors/asterisk
1
0
Fork 0
mirror of https://github.com/asterisk/asterisk.git synced 2025-10-12 15:45:18 +00:00
Code Issues Packages Projects Releases Wiki Activity

chan_local: Misc lock and ref tweaks.

Browse Source 
* awesome_locking() does not need to thrash the pvt lock as much.

* local_setoption() does not need to check for NULL pvt on cleanup since
it will never be NULL.

* Made ref the pvt before locking for consistency.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@378072 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Richard Mudgett
2012-12-17 20:34:25 +00:00
parent de026cf92f
commit 87cb8e94cd
1 changed files with 8 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
channels/chan_local.c
View File

@@ -161,7 +161,7 @@ struct local_pvt {
#define LOCAL_BRIDGE (1 << 3) /*!< Report back the "true" channel as being bridged to */
#define LOCAL_MOH_PASSTHRU (1 << 4) /*!< Pass through music on hold start/stop frames */
/*
/*!
* \brief Send a pvt in with no locks held and get all locks
*
* \note NO locks should be held prior to calling this function
@@ -175,8 +175,8 @@ static void awesome_locking(struct local_pvt *p, struct ast_channel **outchan, s
struct ast_channel *chan = NULL;
struct ast_channel *owner = NULL;
for (;;) {
ao2_lock(p);
for (;;) {
if (p->chan) {
chan = p->chan;
ast_channel_ref(chan);
@@ -194,12 +194,11 @@ static void awesome_locking(struct local_pvt *p, struct ast_channel **outchan, s
} else if(chan) {
ast_channel_lock(chan);
}
ao2_lock(p);
} else {
/* lock both channels first, then get the pvt lock */
ast_channel_lock_both(chan, owner);
ao2_lock(p);
}
ao2_lock(p);
/* Now that we have all the locks, validate that nothing changed */
if (p->owner != owner || p->chan != chan) {
@@ -211,7 +210,6 @@ static void awesome_locking(struct local_pvt *p, struct ast_channel **outchan, s
ast_channel_unlock(chan);
chan = ast_channel_unref(chan);
}
ao2_unlock(p);
continue;
}
@@ -225,7 +223,7 @@ static void awesome_locking(struct local_pvt *p, struct ast_channel **outchan, s
static int local_setoption(struct ast_channel *ast, int option, void * data, int datalen)
{
int res = 0;
struct local_pvt *p = NULL;
struct local_pvt *p;
struct ast_channel *otherchan = NULL;
ast_chan_write_info_t *write_info;
@@ -272,9 +270,7 @@ static int local_setoption(struct ast_channel *ast, int option, void * data, int
ast_channel_unlock(otherchan);
setoption_cleanup:
if (p) {
ao2_ref(p, -1);
}
if (otherchan) {
ast_channel_unref(otherchan);
}
@@ -468,8 +464,8 @@ static int local_answer(struct ast_channel *ast)
return -1;
}
ao2_lock(p);
ao2_ref(p, 1);
ao2_lock(p);
isoutbound = IS_OUTBOUND(ast, p);
if (isoutbound) {
/* Pass along answer since somebody answered us */
@@ -839,8 +835,8 @@ static int local_sendtext(struct ast_channel *ast, const char *text)
return -1;
}
ao2_lock(p);
ao2_ref(p, 1); /* ref for local_queue_frame */
ao2_lock(p);
isoutbound = IS_OUTBOUND(ast, p);
f.data.ptr = (char *) text;
f.datalen = strlen(text) + 1;
@@ -861,8 +857,8 @@ static int local_sendhtml(struct ast_channel *ast, int subclass, const char *dat
return -1;
}
ao2_lock(p);
ao2_ref(p, 1); /* ref for local_queue_frame */
ao2_lock(p);
isoutbound = IS_OUTBOUND(ast, p);
f.subclass.integer = subclass;
f.data.ptr = (char *)data;