Asterisk - The Open Source Telephony Project GIT-master-0bf3178
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"smart" channels that update automatically if a channel is masqueraded More...
Go to the source code of this file.
Data Structures | |
struct | ast_autochan |
Macros | |
#define | ast_autochan_channel_lock(autochan) |
Lock the autochan's channel lock. More... | |
#define | ast_autochan_channel_unlock(autochan) ast_channel_unlock(autochan->chan) |
Functions | |
void | ast_autochan_destroy (struct ast_autochan *autochan) |
destroy an ast_autochan structure More... | |
void | ast_autochan_new_channel (struct ast_channel *old_chan, struct ast_channel *new_chan) |
Switch what channel autochans point to. More... | |
struct ast_autochan * | ast_autochan_setup (struct ast_channel *chan) |
set up a new ast_autochan structure More... | |
"smart" channels that update automatically if a channel is masqueraded
Definition in file autochan.h.
#define ast_autochan_channel_lock | ( | autochan | ) |
Lock the autochan's channel lock.
An ast_autochan is a structure which contains an ast_channel. The pointer inside an autochan has the ability to update itself if the channel it points to is masqueraded into a different channel.
This has a great benefit for any application or service which creates a thread outside of the channel's main operating thread which keeps a pointer to said channel. when a masquerade occurs on the channel, the autochan's chan pointer will automatically update to point to the new channel.
Some rules for autochans
Definition at line 75 of file autochan.h.
#define ast_autochan_channel_unlock | ( | autochan | ) | ast_channel_unlock(autochan->chan) |
Definition at line 84 of file autochan.h.
void ast_autochan_destroy | ( | struct ast_autochan * | autochan | ) |
destroy an ast_autochan structure
Removes the passed-in autochan from the list of autochans and unrefs the channel that is pointed to. Also frees the autochan struct itself. This function will unref the channel reference which was made in ast_autochan_setup
autochan | The autochan that you wish to destroy |
Definition at line 64 of file autochan.c.
References ast_autochan_channel_lock, ast_autochan_channel_unlock, ast_channel_autochans(), ast_channel_unref, ast_debug, ast_free, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, ast_mutex_destroy, ast_autochan::chan, ast_autochan::list, and ast_autochan::lock.
Referenced by channel_spy(), common_exec(), launch_monitor_thread(), mixmonitor_thread(), and multi_autochan_free().
void ast_autochan_new_channel | ( | struct ast_channel * | old_chan, |
struct ast_channel * | new_chan | ||
) |
Switch what channel autochans point to.
Traverses the list of autochans. All autochans which point to old_chan will be updated to point to new_chan instead. Currently this is only called during an ast_channel_move() operation in channel.c.
old_chan | The channel that autochans may currently point to |
new_chan | The channel that we want to point those autochans to now |
Definition at line 86 of file autochan.c.
References ast_channel_autochans(), ast_channel_name(), ast_channel_ref, ast_channel_unref, ast_debug, AST_LIST_APPEND_LIST, AST_LIST_TRAVERSE, ast_mutex_lock, ast_mutex_unlock, ast_autochan::chan, ast_autochan::list, and ast_autochan::lock.
Referenced by channel_do_masquerade().
struct ast_autochan * ast_autochan_setup | ( | struct ast_channel * | chan | ) |
set up a new ast_autochan structure
Allocates and initializes an ast_autochan, sets the autochan's chan pointer to point to the chan parameter, and adds the autochan to the global list of autochans. The newly- created autochan is returned to the caller. This function will cause the refcount of chan to increase by 1.
chan | The channel our new autochan will point to |
NULL | Failure |
non-NULL | success |
Definition at line 38 of file autochan.c.
References ast_calloc, ast_channel_autochans(), ast_channel_lock, ast_channel_name(), ast_channel_ref, ast_channel_unlock, ast_debug, AST_LIST_INSERT_TAIL, ast_mutex_init, ast_autochan::chan, ast_autochan::list, ast_autochan::lock, and NULL.
Referenced by attach_barge(), common_exec(), do_broadcast(), launch_monitor_thread(), and next_channel().