Use nanoseconds for v2 method tracing

Update the precision of timestamps to be nanoseconds and use nanosecond
precision in method trace format v2. For format v1 we use microsecond
precision for backwards compatability.

Bug: 259258187
Test: art/test.py -t 2246
Change-Id: I099e21f5d143c5444193e7886b5281b32f87d5d3

1 files changed, 3 insertions, 3 deletions

diff --git a/runtime/trace_profile.cc b/runtime/trace_profile.cc
index d0d234c476..19e0a56bcc 100644
--- a/runtime/trace_profile.cc
+++ b/runtime/trace_profile.cc
@@ -140,7 +140,7 @@ void RecordMethodsOnThreadStack(Thread* thread, uintptr_t* method_trace_buffer)
   visitor.WalkStack(true);
 
   // Create method entry events for all methods currently on the thread's stack.
-  uint64_t init_time = TimestampCounter::GetMicroTime(TimestampCounter::GetTimestamp());
+  uint64_t init_time = TimestampCounter::GetNanoTime(TimestampCounter::GetTimestamp());
   // Set the lsb to 0 to indicate method entry.
   init_time = init_time & ~1;
   std::ostringstream os;
@@ -492,13 +492,13 @@ void TraceProfiler::DumpLongRunningMethodBuffer(uint32_t thread_id,
       // start of the trace. Just ignore this entry.
     } else if (entry & 0x1) {
       // Method exit
-      os << "<-" << TimestampCounter::GetMicroTime(entry & ~1) << "\n";
+      os << "<-" << TimestampCounter::GetNanoTime(entry & ~1) << "\n";
     } else {
       // Method entry
       ArtMethod* method = reinterpret_cast<ArtMethod*>(entry);
       ptr--;
       CHECK(ptr >= end_trace_entries);
-      os << "->" << method << " " << TimestampCounter::GetMicroTime(*ptr) << "\n";
+      os << "->" << method << " " << TimestampCounter::GetNanoTime(*ptr) << "\n";
       methods.insert(method);
     }
     ptr--;