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pbx: Create pbx_sw.c for management of 'struct ast_sw'.

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This changes context switches from a linked list to a vector, makes
'struct ast_sw' opaque to pbx.c.

Although ast_walk_context_switches is maintained the procedure is no
longer efficient except for the first call (inc==NULL).  This
functionality is replaced by two new functions implemented by vector
macros.
* ast_context_switches_count (AST_VECTOR_SIZE)
* ast_context_switches_get (AST_VECTOR_GET)

As with ast_walk_context_switches callers of these functions are
expected to have locked contexts.  Only a few places in Asterisk walked
the switches, they have been converted to use the new functions.

Change-Id: I08deb016df22eee8288eb03de62593e45a1f0998
This commit is contained in:
Corey Farrell
2016-07-15 20:28:16 -04:00
parent 3ca6407dab
commit a36a174c4b
8 changed files with 235 additions and 114 deletions
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6
main/pbx_private.h
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@@ -49,6 +49,12 @@ void include_free(struct ast_include *inc);
int include_valid(const struct ast_include *inc);
const char *include_rname(const struct ast_include *inc);
/*! pbx_sw.c */
struct ast_sw;
AST_VECTOR(ast_sws, struct ast_sw *);
struct ast_sw *sw_alloc(const char *value, const char *data, int eval, const char *registrar);
void sw_free(struct ast_sw *sw);
/*! pbx_builtins.c functions needed by pbx.c */
int indicate_congestion(struct ast_channel *, const char *);
int indicate_busy(struct ast_channel *, const char *);