taskprocessor.c

	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());
}