commit c560fc0b430816825add4125134b20eb791f6036
author Andreas Gampe <agampe@google.com> Wed Jul 16 09:57:39 2014 -0700
committer Andreas Gampe <agampe@google.com> Mon Dec 12 11:27:09 2016 -0800
tree 117d62174f17f5b0eed1b4b3f64f6575330fe29c
parent 7d81bf2c9de138a65ea7189df18bc88f2c4fe6c5

ART: Report cputime in dex2oat

Add ProcessCpuNanoTime. Log cputime in dex2oat completion message.

Sample:

 dex2oat took 20.036s(64.843s cpu) (threads: 48) arena alloc=25MB (26760672B) java alloc=2MB (2311688B) native alloc=44MB (46792784B) free=35MB (37502896B)

Test: m test-art-host
Change-Id: I78646c4808c8205f7f8e7995a82a1ba63cd15298

runtime/base/time_utils.cc

diff --git a/runtime/base/time_utils.cc b/runtime/base/time_utils.cc
index 3e5bac8..57f198d 100644
--- a/runtime/base/time_utils.cc
+++ b/runtime/base/time_utils.cc
@@ -167,6 +167,17 @@
 #endif
 }
 
+uint64_t ProcessCpuNanoTime() {
+#if defined(__linux__)
+  timespec now;
+  clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &now);
+  return static_cast<uint64_t>(now.tv_sec) * UINT64_C(1000000000) + now.tv_nsec;
+#else
+  UNIMPLEMENTED(WARNING);
+  return -1;
+#endif
+}
+
 void NanoSleep(uint64_t ns) {
   timespec tm;
   tm.tv_sec = ns / MsToNs(1000);