1 /*
   2  * Copyright (c) 2003, 2018, 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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #include <stdio.h>
  25 #include "nsk_strace.h"
  26 
  27 extern "C" {
  28 
  29 static const char *Stest_cn="nsk/stress/strace/strace006";
  30 
  31 static jclass testClass, threadClass;
  32 static jint DEPTH;
  33 static jclass stackOverflowErrorClass;
  34 
  35 JNIEXPORT jint JNICALL
  36 JNI_OnLoad(JavaVM *vm, void *reserved)
  37 {
  38     JNIEnv *env;
  39 
  40     if (vm->GetEnv((void **) &env, JNI_VERSION) != JNI_OK) {
  41         printf("%s:%d: Failed to call GetEnv\n", __FILE__, __LINE__);
  42         return 0;
  43     }
  44 
  45     FIND_CLASS(stackOverflowErrorClass, "java/lang/StackOverflowError");
  46     if ((stackOverflowErrorClass = (jclass) env->NewGlobalRef(stackOverflowErrorClass)) == NULL) {
  47         printf("Can't create global ref for stack overflow class\n");
  48         return 0;
  49     }
  50 
  51     return JNI_VERSION;
  52 }
  53 
  54 JNIEXPORT void JNICALL
  55 JNI_OnUnload(JavaVM *vm, void *reserved)
  56 {
  57     JNIEnv *env;
  58 
  59     if (vm->GetEnv((void **) &env, JNI_VERSION) != JNI_OK) {
  60         if (stackOverflowErrorClass != NULL) {
  61             env->DeleteGlobalRef(stackOverflowErrorClass);
  62         }
  63     } else {
  64         printf("%s:%d: Failed to call GetEnv\n", __FILE__, __LINE__);
  65     }
  66 
  67 }
  68 
  69 JNIEXPORT void JNICALL
  70 Java_nsk_stress_strace_strace006Thread_recursiveMethod2(JNIEnv *env, jobject obj)
  71 {
  72     jfieldID field;
  73     jmethodID method;
  74     jint currDepth;
  75     jclass testClass, threadClass;
  76     jint maxDepth;
  77 
  78     FIND_CLASS(testClass, Stest_cn);
  79     GET_OBJECT_CLASS(threadClass, obj);
  80 
  81     GET_STATIC_INT_FIELD(maxDepth, testClass, "DEPTH");
  82 
  83     /* currDepth++ */
  84     GET_INT_FIELD(currDepth, obj, threadClass, "currentDepth");
  85     currDepth++;
  86     SET_INT_FIELD(obj, threadClass, "currentDepth", currDepth);
  87 
  88     if (maxDepth - currDepth > 0)
  89     {
  90         GET_STATIC_METHOD_ID(method, threadClass, "yield", "()V");
  91         NSK_CPP_STUB3(CallStaticVoidMethod, env, threadClass, method);
  92         EXCEPTION_CHECK(stackOverflowErrorClass, currDepth);
  93 
  94         GET_METHOD_ID(method, threadClass, "recursiveMethod1", "()V");
  95         NSK_CPP_STUB3(CallVoidMethod, env, obj, method);
  96         EXCEPTION_CHECK(stackOverflowErrorClass, currDepth);
  97     }
  98 
  99     currDepth--;
 100     GET_OBJECT_CLASS(threadClass, obj);
 101     SET_INT_FIELD(obj, threadClass, "currentDepth", currDepth);
 102 }
 103 
 104 }