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_SHOW_HIDDEN_FRAMES == java_lang_StackStreamFactory_SHOW_HIDDEN_FRAMES &&
  49           JVM_STACKWALK_FILL_LIVE_STACK_FRAMES == java_lang_StackStreamFactory_FILL_LIVE_STACK_FRAMES;
  50 }
  51 
  52 /*
  53  * Class:     java_lang_StackStreamFactory_AbstractStackWalker
  54  * Method:    callStackWalk
  55  * Signature: (JILjava/lang/ContinuationScope;Ljava/lang/Continuation;II[Ljava/lang/Object;)Ljava/lang/Object;
  56  */
  57 JNIEXPORT jobject JNICALL Java_java_lang_StackStreamFactory_00024AbstractStackWalker_callStackWalk
  58   (JNIEnv *env, jobject stackstream, jlong mode, jint skipFrames, jobject contScope, jobject cont,
  59    jint batchSize, jint startIndex, jobjectArray frames)
  60 {
  61     return JVM_CallStackWalk(env, stackstream, mode, skipFrames, contScope, cont,
  62                              batchSize, startIndex, frames);
  63 }
  64 
  65 /*
  66  * Class:     java_lang_StackStreamFactory_AbstractStackWalker
  67  * Method:    fetchStackFrames
  68  * Signature: (JJII[Ljava/lang/Object;)I
  69  */
  70 JNIEXPORT jint JNICALL Java_java_lang_StackStreamFactory_00024AbstractStackWalker_fetchStackFrames
  71   (JNIEnv *env, jobject stackstream, jlong mode, jlong anchor,
  72    jint batchSize, jint startIndex, 
  73    jobjectArray frames)
  74 {
  75     return JVM_MoreStackWalk(env, stackstream, mode, anchor, batchSize, 
  76                              startIndex, frames);
  77 }
  78 
  79 /*
  80  * Class:     java_lang_StackStreamFactory_AbstractStackWalker
  81  * Method:    setContinuation
  82  * Signature: (J[Ljava/lang/Object;Ljava/lang/Continuation;)V
  83  */
  84 JNIEXPORT void JNICALL Java_java_lang_StackStreamFactory_00024AbstractStackWalker_setContinuation
  85   (JNIEnv *env, jobject stackstream, jlong anchor, jobjectArray frames, jobject cont)
  86 {
  87   JVM_SetStackWalkContinuation(env, stackstream, anchor, frames, cont);
  88 }