Import debug helper macros.

scripts/debug-helpers.sh

@@ -0,0 +1,39 @@
+#
+# Bash helpers for debugging.
+#
+
+# Tell Ansible to write PID files for the mux and top-level process to CWD.
+export MITOGEN_SAVE_PIDS=1
+
+
+# strace -ff -p $(muxpid)
+muxpid() {
+    cat .ansible-mux.pid
+}
+
+# gdb -p $(anspid)
+anspid() {
+    cat .ansible-controller.pid
+}
+
+# perf top -git $(muxtids)
+# perf top -git $(muxtids)
+muxtids() {
+    ls /proc/$(muxpid)/task | tr \\n ,
+}
+
+# perf top -git $(anstids)
+anstids() {
+    ls /proc/$(anspid)/task | tr \\n ,
+}
+
+# ttrace $(muxpid) [.. options ..]
+#   strace only threads of PID, not children
+ttrace() {
+    local pid=$1; shift;
+    local s=""
+    for i in $(ls /proc/$pid/task) ; do
+        s="-p $i $s"
+    done
+    strace $s "$@"
+}