tools: Script skeletons

Skeletons for method flow, object allocations, general
event statistics, and thread statistics.

tools/ucalls.py

@@ -11,6 +11,10 @@
 #
 # 19-Oct-2016   Sasha Goldshtein   Created this.
 
+# TODO Add node!
+# TODO Add shell wrappers: javacalls, pythoncalls, etc.
+# TODO Add syscalls information from sys_* and SyS_* kprobes
+
 from __future__ import print_function
 import argparse
 from bcc import BPF, USDT

tools/uobjnew.py

+# Object allocation events

tools/ustat.py

+# Like the *_stat.d scripts in dtrace-toolkit, a top-like display of
+# event rates like thread starts, class loads, method calls, syscalls,
+# garbage collections, exceptions, and so on. The set of events depends
+# on the probes available in the language of choice.

tools/uthreads.py

+# Thread creation and destruction events