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8150778: Reduce Throwable.getStackTrace() calls to the JVM

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Replace JVM_GetStackTraceDepth and JVM_GetStackTraceElement, with JVM_GetStackTraceElements that gets all the elements in the StackTraceElement[]

Reviewed-by: shade, mchung, dholmes, hseigel
This commit is contained in:
Coleen Phillimore 2016-03-10 13:43:47 -05:00
parent fc407c943e
commit 4a05d83db0
9 changed files with 312 additions and 163 deletions
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22
hotspot/src/share/vm/prims/jvm.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -514,19 +514,13 @@ JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver))
JVM_END
JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable))
JVMWrapper("JVM_GetStackTraceDepth");
oop exception = JNIHandles::resolve(throwable);
return java_lang_Throwable::get_stack_trace_depth(exception, THREAD);
JVM_END
JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index))
JVMWrapper("JVM_GetStackTraceElement");
JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC
oop exception = JNIHandles::resolve(throwable);
oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL);
return JNIHandles::make_local(env, element);
JVM_ENTRY(void, JVM_GetStackTraceElements(JNIEnv *env, jobject throwable, jobjectArray stackTrace))
JVMWrapper("JVM_GetStackTraceElements");
Handle exception(THREAD, JNIHandles::resolve(throwable));
objArrayOop st = objArrayOop(JNIHandles::resolve(stackTrace));
objArrayHandle stack_trace(THREAD, st);
// Fill in the allocated stack trace
java_lang_Throwable::get_stack_trace_elements(exception, stack_trace, CHECK);
JVM_END