add 'show threads' and 'show profile' commands.

These are momstly debugging tools for developers,
a bit documented in the header files (utils.h),
although more documentation is definitely necessary.

The performance impact is close to zero(*) so there is no
need to compile it conditionally.
(*) not completely true - thread destruction still needs
to search a list _but_ this can be easily optimized if we
end up with hundreds of active threads (in which case, though,
the problem is clearly elsewhere).



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@19544 65c4cc65-6c06-0410-ace0-fbb531ad65f3

utils/astman.c

@@ -84,6 +84,25 @@ void ast_unregister_file_version(const char *file)
 {
 }
 
+int ast_add_profile(const char *, uint64_t scale);
+int ast_add_profile(const char *s, uint64_t scale)
+{
+	return -1;
+}
+
+int64_t ast_profile(int, int64_t);
+int64_t ast_profile(int key, int64_t val)
+{
+	return 0;
+}
+int64_t ast_mark(int, int start1_stop0);
+int64_t ast_mark(int key, int start1_stop0)
+{
+	return 0;
+}
+
+/* end of dummy functions */
+
 static struct ast_chan *find_chan(char *name)
 {
 	struct ast_chan *chan;