From ec1f1c6742d55dac75f715422ce4c0191e0f216e Mon Sep 17 00:00:00 2001 From: Richard Mudgett Date: Thu, 7 Jan 2016 16:15:35 -0600 Subject: taskprocessor.c: New API for human friendly taskprocessor names. * Add new API call to get a sequence number for use in human friendly taskprocessor names. * Add new API call to create a taskprocessor name in a given buffer and append a sequence number. Change-Id: Iac458f05b45232315ed64aa31b1df05b875537a9 --- main/taskprocessor.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'main') diff --git a/main/taskprocessor.c b/main/taskprocessor.c index 7fe378aad..59e4a2fa1 100644 --- a/main/taskprocessor.c +++ b/main/taskprocessor.c @@ -879,3 +879,37 @@ int ast_taskprocessor_is_task(struct ast_taskprocessor *tps) ao2_unlock(tps); return is_task; } + +unsigned int ast_taskprocessor_seq_num(void) +{ + static int seq_num; + + return (unsigned int) ast_atomic_fetchadd_int(&seq_num, +1); +} + +void ast_taskprocessor_build_name(char *buf, unsigned int size, const char *format, ...) +{ + va_list ap; + int user_size; +#define SEQ_STR_SIZE (1 + 8 + 1) /* Dash plus 8 hex digits plus null terminator */ + + ast_assert(buf != NULL); + ast_assert(SEQ_STR_SIZE <= size); + + va_start(ap, format); + user_size = vsnprintf(buf, size - (SEQ_STR_SIZE - 1), format, ap); + va_end(ap); + if (user_size < 0) { + /* + * Wow! We got an output error to a memory buffer. + * Assume no user part of name written. + */ + user_size = 0; + } else if (size < user_size + SEQ_STR_SIZE) { + /* Truncate user part of name to make sequence number fit. */ + user_size = size - SEQ_STR_SIZE; + } + + /* Append sequence number to end of user name. */ + snprintf(buf + user_size, SEQ_STR_SIZE, "-%08x", ast_taskprocessor_seq_num()); +} -- cgit v1.2.3