Compute and pring the time that it takes to execute system calls. This data...

sandbox/linux/seccomp/getpid.cc

Index: sandbox/linux/seccomp/getpid.cc
===================================================================
--- sandbox/linux/seccomp/getpid.cc	(revision 41782)
+++ sandbox/linux/seccomp/getpid.cc	(working copy)
@@ -8,7 +8,9 @@
 namespace playground {
 
 int Sandbox::sandbox_getpid() {
-  Debug::syscall(__NR_getpid, "Executing handler");
+  long long tm;
+  Debug::syscall(&tm, __NR_getpid, "Executing handler");
+  Debug::elapsed(tm, __NR_getpid);
   return pid_;
 }