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Use va_copy for stringfields 

The ast_string_field_build_va functions were written to take to separate
va_lists to work around FreeBSD 4 not having va_copy defined.

In the end, we don't support anything using gcc < 3 anyway because we use
va_copy all over the place anyway. This patch just simplifies things by
removing the second va_list function arguments in favor of va_copy.

Review: https://reviewboard.asterisk.org/r/1233/
--This line, and those below, will be ignored--

M    include/asterisk/stringfields.h
M    main/utils.c
M    main/channel.c


git-svn-id: http://svn.digium.com/svn/asterisk/trunk@320946 f38db490-d61c-443f-a65b-d21fe96a405b
This commit is contained in:
twilson 2011-05-26 15:55:22 +00:00
parent 88e6859a3a
commit 2aeb6694bb
3 changed files with 26 additions and 32 deletions
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10
include/asterisk/stringfields.h
View File

@ -205,7 +205,7 @@ void __ast_string_field_ptr_build(struct ast_string_field_mgr *mgr,
*/
void __ast_string_field_ptr_build_va(struct ast_string_field_mgr *mgr,
struct ast_string_field_pool **pool_head,
ast_string_field *ptr, const char *format, va_list a1, va_list a2) __attribute__((format(printf, 4, 0)));
ast_string_field *ptr, const char *format, va_list ap) __attribute__((format(printf, 4, 0)));
/*!
\brief Declare a string field
@ -369,8 +369,8 @@ typedef uint16_t ast_string_field_allocation;
\param args2 a second copy of the va_list for the sake of bsd, with no va_list copy operation
\return nothing
*/
#define ast_string_field_ptr_build_va(x, ptr, fmt, args1, args2) \
__ast_string_field_ptr_build_va(&(x)->__field_mgr, &(x)->__field_mgr_pool, (ast_string_field *) ptr, fmt, args1, args2)
#define ast_string_field_ptr_build_va(x, ptr, fmt, args) \
__ast_string_field_ptr_build_va(&(x)->__field_mgr, &(x)->__field_mgr_pool, (ast_string_field *) ptr, fmt, args)
/*!
\brief Set a field to a complex (built) value
@ -381,7 +381,7 @@ typedef uint16_t ast_string_field_allocation;
\param args2 argument two
\return nothing
*/
#define ast_string_field_build_va(x, field, fmt, args1, args2) \
__ast_string_field_ptr_build_va(&(x)->__field_mgr, &(x)->__field_mgr_pool, (ast_string_field *) &(x)->field, fmt, args1, args2)
#define ast_string_field_build_va(x, field, fmt, args) \
__ast_string_field_ptr_build_va(&(x)->__field_mgr, &(x)->__field_mgr_pool, (ast_string_field *) &(x)->field, fmt, args)
#endif /* _ASTERISK_STRINGFIELDS_H */

24
main/channel.c
View File

@ -1118,7 +1118,7 @@ static struct ast_channel * attribute_malloc __attribute__((format(printf, 13, 0
__ast_channel_alloc_ap(int needqueue, int state, const char *cid_num, const char *cid_name,
const char *acctcode, const char *exten, const char *context,
const char *linkedid, const int amaflag, const char *file, int line,
const char *function, const char *name_fmt, va_list ap1, va_list ap2)
const char *function, const char *name_fmt, va_list ap)
{
struct ast_channel *tmp;
int x;
@ -1263,7 +1263,7 @@ __ast_channel_alloc_ap(int needqueue, int state, const char *cid_num, const char
* uses them to build the string, instead of forming the va_lists internally from the vararg ... list.
* This new function was written so this can be accomplished.
*/
ast_string_field_build_va(tmp, name, name_fmt, ap1, ap2);
ast_string_field_build_va(tmp, name, name_fmt, ap);
tech = ast_strdupa(tmp->name);
if ((slash = strchr(tech, '/'))) {
if ((slash2 = strchr(slash + 1, '/'))) {
@ -1362,15 +1362,13 @@ struct ast_channel *__ast_channel_alloc(int needqueue, int state, const char *ci
const char *file, int line, const char *function,
const char *name_fmt, ...)
{
va_list ap1, ap2;
va_list ap;
struct ast_channel *result;
va_start(ap1, name_fmt);
va_start(ap2, name_fmt);
va_start(ap, name_fmt);
result = __ast_channel_alloc_ap(needqueue, state, cid_num, cid_name, acctcode, exten, context,
linkedid, amaflag, file, line, function, name_fmt, ap1, ap2);
va_end(ap1);
va_end(ap2);
linkedid, amaflag, file, line, function, name_fmt, ap);
va_end(ap);
return result;
}
@ -9584,16 +9582,14 @@ struct ast_channel *ast_channel_alloc(int needqueue, int state, const char *cid_
const char *linkedid, const int amaflag,
const char *name_fmt, ...)
{
va_list ap1, ap2;
va_list ap;
struct ast_channel *result;
va_start(ap1, name_fmt);
va_start(ap2, name_fmt);
va_start(ap, name_fmt);
result = __ast_channel_alloc_ap(needqueue, state, cid_num, cid_name, acctcode, exten, context,
linkedid, amaflag, __FILE__, __LINE__, __FUNCTION__, name_fmt, ap1, ap2);
va_end(ap1);
va_end(ap2);
linkedid, amaflag, __FILE__, __LINE__, __FUNCTION__, name_fmt, ap);
va_end(ap);
return result;
}

24
main/utils.c
View File

@ -1733,13 +1733,14 @@ void __ast_string_field_release_active(struct ast_string_field_pool *pool_head,
void __ast_string_field_ptr_build_va(struct ast_string_field_mgr *mgr,
struct ast_string_field_pool **pool_head,
ast_string_field *ptr, const char *format, va_list ap1, va_list ap2)
ast_string_field *ptr, const char *format, va_list ap)
{
size_t needed;
size_t available;
size_t space = (*pool_head)->size - (*pool_head)->used;
ssize_t grow;
char *target;
va_list ap2;
/* if the field already has space allocated, try to reuse it;
otherwise, try to use the empty space at the end of the current
@ -1762,9 +1763,9 @@ void __ast_string_field_ptr_build_va(struct ast_string_field_mgr *mgr,
available = space - sizeof(ast_string_field_allocation);
}
needed = vsnprintf(target, available, format, ap1) + 1;
va_end(ap1);
va_copy(ap2, ap);
needed = vsnprintf(target, available, format, ap2) + 1;
va_end(ap2);
if (needed > available) {
/* the allocation could not be satisfied using the field's current allocation
@ -1774,7 +1775,8 @@ void __ast_string_field_ptr_build_va(struct ast_string_field_mgr *mgr,
if (!(target = (char *) __ast_string_field_alloc_space(mgr, pool_head, needed))) {
return;
}
vsprintf(target, format, ap2);
vsprintf(target, format, ap);
va_end(ap);
__ast_string_field_release_active(*pool_head, *ptr);
*ptr = target;
} else if (*ptr != target) {
@ -1800,15 +1802,11 @@ void __ast_string_field_ptr_build(struct ast_string_field_mgr *mgr,
struct ast_string_field_pool **pool_head,
ast_string_field *ptr, const char *format, ...)
{
va_list ap1, ap2;
va_list ap;
va_start(ap1, format);
va_start(ap2, format); /* va_copy does not exist on FreeBSD */
__ast_string_field_ptr_build_va(mgr, pool_head, ptr, format, ap1, ap2);
va_end(ap1);
va_end(ap2);
va_start(ap, format);
__ast_string_field_ptr_build_va(mgr, pool_head, ptr, format, ap);
va_end(ap);
}
void *__ast_calloc_with_stringfields(unsigned int num_structs, size_t struct_size, size_t field_mgr_offset,