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Merged revision 291504 from

Browse Source 
https://origsvn.digium.com/svn/asterisk/be/branches/C.3-bier

..........
  r291504 | rmudgett | 2010-10-13 13:30:21 -0500 (Wed, 13 Oct 2010) | 11 lines

  Hold off ast_hangup() from destroying the ast_channel.

  Must get the ast_channel lock before proceeding with release_chan() and
  release_chan_early() to hold off ast_hangup() from destroying the
  ast_channel.

  Missed this change for -r291468.

  JIRA ABE-2598
  JIRA SWP-2317
..........


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@291507 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Richard Mudgett
2010-10-13 19:01:48 +00:00
parent a5a798aefa
commit 84b12f0c4d
1 changed files with 49 additions and 35 deletions
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84
channels/chan_misdn.c
View File

@@ -8332,16 +8332,42 @@ static void release_chan(struct chan_list *ch, struct misdn_bchannel *bc)
{
struct ast_channel *ast;
chan_misdn_log(5, bc->port, "release_chan: bc with pid:%d l3id: %x\n", bc->pid, bc->l3_id);
ast_mutex_lock(&release_lock);
for (;;) {
ast = ch->ast;
if (!ast || !ast_channel_trylock(ast)) {
break;
}
DEADLOCK_AVOIDANCE(&release_lock);
}
if (!cl_dequeue_chan(ch)) {
/* Someone already released it. */
if (ast) {
ast_channel_unlock(ast);
}
ast_mutex_unlock(&release_lock);
return;
}
ch->state = MISDN_CLEANING;
ast = ch->ast;
ch->ast = NULL;
ast_mutex_unlock(&release_lock);
if (ast) {
MISDN_ASTERISK_TECH_PVT(ast) = NULL;
chan_misdn_log(1, bc->port,
"* RELEASING CHANNEL pid:%d context:%s dialed:%s caller:\"%s\" <%s>\n",
bc->pid,
ast->context,
ast->exten,
S_COR(ast->caller.id.name.valid, ast->caller.id.name.str, ""),
S_COR(ast->caller.id.number.valid, ast->caller.id.number.str, ""));
if (ast->_state != AST_STATE_RESERVED) {
chan_misdn_log(3, bc->port, " --> Setting AST State to down\n");
ast_setstate(ast, AST_STATE_DOWN);
}
ast_channel_unlock(ast);
}
#if defined(AST_MISDN_ENHANCEMENTS)
if (ch->peer) {
@@ -8355,8 +8381,6 @@ static void release_chan(struct chan_list *ch, struct misdn_bchannel *bc)
ch->dsp = NULL;
}
chan_misdn_log(5, bc->port, "release_chan: bc with pid:%d l3id: %x\n", bc->pid, bc->l3_id);
/* releasing jitterbuffer */
if (ch->jb) {
misdn_jb_destroy(ch->jb);
@@ -8384,27 +8408,9 @@ static void release_chan(struct chan_list *ch, struct misdn_bchannel *bc)
close(ch->pipe[0]);
close(ch->pipe[1]);
if (ast) {
ast_channel_lock(ast);
MISDN_ASTERISK_TECH_PVT(ast) = NULL;
chan_misdn_log(1, bc->port,
"* RELEASING CHANNEL pid:%d context:%s dialed:%s caller:\"%s\" <%s>\n",
bc->pid,
ast->context,
ast->exten,
(ast->caller.id.name.valid && ast->caller.id.name.str)
? ast->caller.id.name.str : "",
(ast->caller.id.number.valid && ast->caller.id.number.str)
? ast->caller.id.number.str : "");
if (ast->_state != AST_STATE_RESERVED) {
chan_misdn_log(3, bc->port, " --> Setting AST State to down\n");
ast_setstate(ast, AST_STATE_DOWN);
}
ast_channel_unlock(ast);
}
ast_free(ch);
ast_mutex_unlock(&release_lock);
}
/*!
@@ -8422,15 +8428,30 @@ static void release_chan_early(struct chan_list *ch)
struct ast_channel *ast;
ast_mutex_lock(&release_lock);
for (;;) {
ast = ch->ast;
if (!ast || !ast_channel_trylock(ast)) {
break;
}
DEADLOCK_AVOIDANCE(&release_lock);
}
if (!cl_dequeue_chan(ch)) {
/* Someone already released it. */
if (ast) {
ast_channel_unlock(ast);
}
ast_mutex_unlock(&release_lock);
return;
}
ch->state = MISDN_CLEANING;
ast = ch->ast;
ch->ast = NULL;
ast_mutex_unlock(&release_lock);
if (ast) {
MISDN_ASTERISK_TECH_PVT(ast) = NULL;
if (ast->_state != AST_STATE_RESERVED) {
ast_setstate(ast, AST_STATE_DOWN);
}
ast_channel_unlock(ast);
}
#if defined(AST_MISDN_ENHANCEMENTS)
if (ch->peer) {
@@ -8469,16 +8490,9 @@ static void release_chan_early(struct chan_list *ch)
close(ch->pipe[0]);
close(ch->pipe[1]);
if (ast) {
ast_channel_lock(ast);
MISDN_ASTERISK_TECH_PVT(ast) = NULL;
if (ast->_state != AST_STATE_RESERVED) {
ast_setstate(ast, AST_STATE_DOWN);
}
ast_channel_unlock(ast);
}
ast_free(ch);
ast_mutex_unlock(&release_lock);
}
/*!