8308633: Increase precision of timestamps in g1 log

Backport-of: c23794f88270c121bf99fdf297fdfde53072e3b6

Author: cost0much

src/hotspot/share/gc/g1/g1GCPhaseTimes.cpp

@@ -340,7 +340,7 @@ void G1GCPhaseTimes::trace_phase(WorkerDataArray<double>* phase, bool print_sum,
   }
 }
 
-#define TIME_FORMAT "%.1lfms"
+#define TIME_FORMAT "%.2lfms"
 
 void G1GCPhaseTimes::info_time(const char* name, double value) const {
   log_info(gc, phases)("  %s: " TIME_FORMAT, name, value);

src/hotspot/share/gc/shared/weakProcessorTimes.cpp

@@ -173,7 +173,7 @@ static const char* indent_str(size_t i) {
   return indents[MIN2(i, max_indents_index)];
 }
 
-#define TIME_FORMAT "%.1lfms"
+#define TIME_FORMAT "%.2lfms"
 
 void WeakProcessorTimes::log_summary(OopStorageSet::WeakId id, uint indent) const {
   LogTarget(Debug, gc, phases) lt;

src/hotspot/share/gc/shared/workerDataArray.cpp

@@ -36,6 +36,8 @@ double WorkerDataArray<double>::uninitialized() {
   return -1.0;
 }
 
+#define WDA_TIME_FORMAT "%4.2lf"
+
 template <>
 void WorkerDataArray<double>::WDAPrinter::summary(outputStream* out, double time) {
   out->print_cr(" %.1lfms", time * MILLIUNITS);
@@ -48,9 +50,10 @@ void WorkerDataArray<size_t>::WDAPrinter::summary(outputStream* out, size_t valu
 
 template <>
 void WorkerDataArray<double>::WDAPrinter::summary(outputStream* out, double min, double avg, double max, double diff, double sum, bool print_sum) {
-  out->print(" Min: %4.1lf, Avg: %4.1lf, Max: %4.1lf, Diff: %4.1lf", min * MILLIUNITS, avg * MILLIUNITS, max * MILLIUNITS, diff* MILLIUNITS);
+  out->print(" Min: " WDA_TIME_FORMAT ", Avg: " WDA_TIME_FORMAT ", Max: " WDA_TIME_FORMAT ", Diff: " WDA_TIME_FORMAT,
+             min * MILLIUNITS, avg * MILLIUNITS, max * MILLIUNITS, diff* MILLIUNITS);
   if (print_sum) {
-    out->print(", Sum: %4.1lf", sum * MILLIUNITS);
+    out->print(", Sum: " WDA_TIME_FORMAT, sum * MILLIUNITS);
   }
 }
 
@@ -68,7 +71,7 @@ void WorkerDataArray<double>::WDAPrinter::details(const WorkerDataArray<double>*
   for (uint i = 0; i < phase->_length; ++i) {
     double value = phase->get(i);
     if (value != phase->uninitialized()) {
-      out->print(" %4.1lf", phase->get(i) * 1000.0);
+      out->print(" " WDA_TIME_FORMAT, phase->get(i) * 1000.0);
     } else {
       out->print(" -");
     }

test/hotspot/gtest/gc/shared/test_workerDataArray.cpp

@@ -102,9 +102,9 @@ const char* WorkerDataArrayTest<double>::format_summary(
   double min, double avg, double max, double diff, double sum, size_t workers) {
 
   stringStream out;
-  out.print(" Min: %4.1lf"
-            ", Avg: %4.1lf, Max: %4.1lf"
-            ", Diff: %4.1lf, Sum: %4.1lf"
+  out.print(" Min: %4.2lf"
+            ", Avg: %4.2lf, Max: %4.2lf"
+            ", Diff: %4.2lf, Sum: %4.2lf"
             ", Workers: " SIZE_FORMAT "\n",
             min, avg, max, diff, sum, workers);
   return out.as_string();
@@ -278,12 +278,12 @@ class UninitializedDoubleElementWorkerDataArrayTest : public WorkerDataArrayTest
 
  private:
   virtual const char* expected_summary() {
-    return format_summary(5.1, 6.1, 7.2, 2.1, 12.3, 2);
+    return format_summary(5.10, 6.15, 7.20, 2.10, 12.30, 2);
   }
 
   virtual const char* expected_details() {
     stringStream out;
-    out.print(" %4.1lf - %4.1lf\n", 5.1, 7.2);
+    out.print(" %4.2lf - %4.2lf\n", 5.1, 7.2);
     return out.as_string();
   }
 };