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8153394: Add Unified Logging to make it easy to trace time taken in initPhase2

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Added modules+startuptime logging for initPhase2 via TraceTime class

Reviewed-by: rehn, hseigel, mockner
This commit is contained in:
Rachel Protacio 2016-06-17 10:46:55 -04:00
parent 6ef961edbd
commit 36ac8c8a00
2 changed files with 22 additions and 0 deletions
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2
hotspot/src/share/vm/runtime/thread.cpp
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@ -3405,6 +3405,8 @@ static void call_initPhase1(TRAPS) {
// //
// After phase 2, The VM will begin search classes from -Xbootclasspath/a. // After phase 2, The VM will begin search classes from -Xbootclasspath/a.
static void call_initPhase2(TRAPS) { static void call_initPhase2(TRAPS) {
TraceTime timer("Phase2 initialization", TRACETIME_LOG(Info, modules, startuptime));
Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(), true, CHECK); Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(), true, CHECK);
instanceKlassHandle klass (THREAD, k); instanceKlassHandle klass (THREAD, k);

20
hotspot/test/runtime/logging/StartupTimeTest.java
View file

@ -50,6 +50,18 @@ public class StartupTimeTest {
output.shouldHaveExitValue(0); output.shouldHaveExitValue(0);
} }
static void analyzeModulesOutputOn(ProcessBuilder pb) throws Exception {
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldMatch("(Phase2 initialization, [0-9]+.[0-9]+ secs)");
output.shouldHaveExitValue(0);
}
static void analyzeModulesOutputOff(ProcessBuilder pb) throws Exception {
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldNotContain("[modules,startuptime]");
output.shouldHaveExitValue(0);
}
public static void main(String[] args) throws Exception { public static void main(String[] args) throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xlog:startuptime", ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xlog:startuptime",
InnerClass.class.getName()); InnerClass.class.getName());
@ -58,6 +70,14 @@ public class StartupTimeTest {
pb = ProcessTools.createJavaProcessBuilder("-Xlog:startuptime=off", pb = ProcessTools.createJavaProcessBuilder("-Xlog:startuptime=off",
InnerClass.class.getName()); InnerClass.class.getName());
analyzeOutputOff(pb); analyzeOutputOff(pb);
pb = ProcessTools.createJavaProcessBuilder("-Xlog:startuptime+modules",
InnerClass.class.getName());
analyzeModulesOutputOn(pb);
pb = ProcessTools.createJavaProcessBuilder("-Xlog:startuptime+modules=off",
InnerClass.class.getName());
analyzeModulesOutputOff(pb);
} }
public static class InnerClass { public static class InnerClass {