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Revert "Add API for channel frame deferral."

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This reverts commit f073f648b8.
Multiple testsuite failures were detected after the fact.

Change-Id: I968c380418bf65c7166f6ecff30fe8e247ea6682
This commit is contained in:
George Joseph
2016-11-10 08:34:10 -05:00
parent f073f648b8
commit fa749866c1
3 changed files with 0 additions and 89 deletions
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38
include/asterisk/channel.h
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@@ -967,11 +967,6 @@ enum {
* The channel is executing a subroutine or macro * The channel is executing a subroutine or macro
*/ */
AST_FLAG_SUBROUTINE_EXEC = (1 << 27), AST_FLAG_SUBROUTINE_EXEC = (1 << 27),
/*!
* The channel is currently in an operation where
* frames should be deferred.
*/
AST_FLAG_DEFER_FRAMES = (1 << 28),
}; };
/*! \brief ast_bridge_config flags */ /*! \brief ast_bridge_config flags */
@@ -4676,37 +4671,4 @@ enum ast_channel_error {
*/ */
enum ast_channel_error ast_channel_errno(void); enum ast_channel_error ast_channel_errno(void);
/*!
* \brief Retrieve the deferred read queue.
*/
struct ast_readq_list *ast_channel_deferred_readq(struct ast_channel *chan);
/*!
* \brief Start deferring deferrable frames on this channel
*
* Sometimes, a channel gets entered into a mode where a "main" application
* is tasked with servicing frames on the channel, but that application does
* not need to act on those frames. However, it would be imprudent to simply
* drop important frames. This function can be called so that important frames
* will be deferred, rather than placed in the channel frame queue as normal.
*
* \pre chan MUST be locked before calling
*
* \param chan The channel on which frames should be deferred
*/
void ast_channel_start_defer_frames(struct ast_channel *chan);
/*!
* \brief Stop deferring deferrable frames on this channel
*
* When it is time to stop deferring frames on the channel, all deferred frames
* will be queued onto the channel's read queue so that the next servicer of
* the channel can handle those frames as necessary.
*
* \pre chan MUST be locked before calling
*
* \param chan The channel on which to stop deferring frames.
*/
void ast_channel_stop_defer_frames(struct ast_channel *chan);
#endif /* _ASTERISK_CHANNEL_H */ #endif /* _ASTERISK_CHANNEL_H */

45
main/channel.c
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@@ -1062,25 +1062,6 @@ struct ast_channel *__ast_dummy_channel_alloc(const char *file, int line, const
return tmp; return tmp;
} }
void ast_channel_start_defer_frames(struct ast_channel *chan)
{
ast_set_flag(ast_channel_flags(chan), AST_FLAG_DEFER_FRAMES);
}
void ast_channel_stop_defer_frames(struct ast_channel *chan)
{
ast_clear_flag(ast_channel_flags(chan), AST_FLAG_DEFER_FRAMES);
/* Move the deferred frames onto the channel read queue, ahead of other queued frames */
ast_queue_frame_head(chan, AST_LIST_FIRST(ast_channel_deferred_readq(chan)));
/* ast_frfree will mosey down the list and free them all */
if (!AST_LIST_EMPTY(ast_channel_deferred_readq(chan))) {
ast_frfree(AST_LIST_FIRST(ast_channel_deferred_readq(chan)));
}
/* Reset the list to be empty */
AST_LIST_HEAD_INIT_NOLOCK(ast_channel_deferred_readq(chan));
}
static int __ast_queue_frame(struct ast_channel *chan, struct ast_frame *fin, int head, struct ast_frame *after) static int __ast_queue_frame(struct ast_channel *chan, struct ast_frame *fin, int head, struct ast_frame *after)
{ {
struct ast_frame *f; struct ast_frame *f;
@@ -3902,32 +3883,6 @@ static struct ast_frame *__ast_read(struct ast_channel *chan, int dropaudio)
if (!AST_LIST_EMPTY(ast_channel_readq(chan))) { if (!AST_LIST_EMPTY(ast_channel_readq(chan))) {
int skip_dtmf = should_skip_dtmf(chan); int skip_dtmf = should_skip_dtmf(chan);
if (ast_test_flag(ast_channel_flags(chan), AST_FLAG_DEFER_FRAMES)) {
AST_LIST_TRAVERSE_SAFE_BEGIN(ast_channel_readq(chan), f, frame_list) {
if (ast_is_deferrable_frame(f)) {
if (f->frametype == AST_FRAME_CONTROL && f->subclass.integer == AST_CONTROL_HANGUP) {
struct ast_frame *dup;
/* Hangup is a special case. We want to defer the frame, but we also do not
* want to remove it from the frame queue. So rather than just moving the frame
* over, we duplicate it and move the copy to the deferred readq.
*
* The reason for this? This way, whoever calls ast_read() will get a NULL return
* immediately and can tell the channel has hung up and do what it needs to. Also,
* when frame deferral finishes, then whoever calls ast_read() next will also get
* the hangup.
*/
dup = ast_frdup(f);
AST_LIST_INSERT_TAIL(ast_channel_deferred_readq(chan), dup, frame_list);
} else {
AST_LIST_INSERT_TAIL(ast_channel_deferred_readq(chan), f, frame_list);
AST_LIST_REMOVE_CURRENT(frame_list);
}
}
}
AST_LIST_TRAVERSE_SAFE_END;
}
AST_LIST_TRAVERSE_SAFE_BEGIN(ast_channel_readq(chan), f, frame_list) { AST_LIST_TRAVERSE_SAFE_BEGIN(ast_channel_readq(chan), f, frame_list) {
/* We have to be picky about which frame we pull off of the readq because /* We have to be picky about which frame we pull off of the readq because
* there are cases where we want to leave DTMF frames on the queue until * there are cases where we want to leave DTMF frames on the queue until

6
main/channel_internal_api.c
View File

@@ -221,7 +221,6 @@ struct ast_channel {
struct stasis_cp_single *topics; /*!< Topic for all channel's events */ struct stasis_cp_single *topics; /*!< Topic for all channel's events */
struct stasis_forward *endpoint_forward; /*!< Subscription for event forwarding to endpoint's topic */ struct stasis_forward *endpoint_forward; /*!< Subscription for event forwarding to endpoint's topic */
struct stasis_forward *endpoint_cache_forward; /*!< Subscription for cache updates to endpoint's topic */ struct stasis_forward *endpoint_cache_forward; /*!< Subscription for cache updates to endpoint's topic */
struct ast_readq_list deferred_readq;
}; };
/*! \brief The monotonically increasing integer counter for channel uniqueids */ /*! \brief The monotonically increasing integer counter for channel uniqueids */
@@ -1682,8 +1681,3 @@ enum ast_channel_error ast_channel_internal_errno(void)
return *error_code; return *error_code;
} }
struct ast_readq_list *ast_channel_deferred_readq(struct ast_channel *chan)
{
return &chan->deferred_readq;
}