1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 /*
  27  *      Implementation of class StackStreamfactory and AbstractStackWalker
  28  */
  29 
  30 #include <stdio.h>
  31 #include <signal.h>
  32 
  33 #include "jni.h"
  34 #include "jvm.h"
  35 
  36 #include "java_lang_StackStreamFactory.h"
  37 #include "java_lang_StackStreamFactory_AbstractStackWalker.h"
  38 
  39 /*
  40  * Class:     java_lang_StackStreamFactory
  41  * Method:    checkStackWalkModes
  42  * Signature: ()
  43  */
  44 JNIEXPORT jboolean JNICALL Java_java_lang_StackStreamFactory_checkStackWalkModes
  45   (JNIEnv *env, jclass dummy)
  46 {
  47    return JVM_STACKWALK_FILL_CLASS_REFS_ONLY == java_lang_StackStreamFactory_FILL_CLASS_REFS_ONLY &&
  48           JVM_STACKWALK_FILTER_FILL_IN_STACK_TRACE == java_lang_StackStreamFactory_FILTER_FILL_IN_STACKTRACE &&
  49           JVM_STACKWALK_SHOW_HIDDEN_FRAMES == java_lang_StackStreamFactory_SHOW_HIDDEN_FRAMES &&
  50           JVM_STACKWALK_FILL_LIVE_STACK_FRAMES == java_lang_StackStreamFactory_FILL_LIVE_STACK_FRAMES;
  51 }
  52 
  53 /*
  54  * Class:     java_lang_StackStreamFactory_AbstractStackWalker
  55  * Method:    callStackWalk
  56  * Signature: (JIII[Ljava/lang/Class;[Ljava/lang/StackWalker/StackFrame;)Ljava/lang/Object;
  57  */
  58 JNIEXPORT jobject JNICALL Java_java_lang_StackStreamFactory_00024AbstractStackWalker_callStackWalk
  59   (JNIEnv *env, jobject stackstream, jlong mode, jint skipFrames, jint batchSize, jint startIndex,
  60    jobjectArray classes, jobjectArray frames)
  61 {
  62     return JVM_CallStackWalk(env, stackstream, mode, skipFrames, batchSize,
  63                              startIndex, classes, frames);
  64 }
  65 
  66 /*
  67  * Class:     java_lang_StackStreamFactory_AbstractStackWalker
  68  * Method:    fetchStackFrames
  69  * Signature: (JJII[Ljava/lang/Class;[Ljava/lang/StackWalker/StackFrame;)I
  70  */
  71 JNIEXPORT jint JNICALL Java_java_lang_StackStreamFactory_00024AbstractStackWalker_fetchStackFrames
  72   (JNIEnv *env, jobject stackstream, jlong mode, jlong anchor,
  73    jint batchSize, jint startIndex,
  74    jobjectArray classes, jobjectArray frames)
  75 {
  76     return JVM_MoreStackWalk(env, stackstream, mode, anchor, batchSize,
  77                              startIndex, classes, frames);
  78 }