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 <string.h>
  25 #include "jvmti.h"
  26 #include "agent_common.h"
  27 #include "jni_tools.h"
  28 #include "jvmti_tools.h"
  29 
  30 extern "C" {
  31 
  32 /* ============================================================================= */
  33 
  34 static jlong timeout = 0;
  35 
  36 /* ============================================================================= */
  37 
  38 /** Agent algorithm. */
  39 static void JNICALL
  40 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
  41     NSK_DISPLAY0("Wait for objects ready for GC\n");
  42     if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout)))
  43         return;
  44 
  45     NSK_DISPLAY0(">>> Testcase #1: force GC to collect sofly reachable objects\n");
  46     {
  47         NSK_DISPLAY0("Call ForceGarbageCollection()\n");
  48         if (!NSK_JVMTI_VERIFY(jvmti->ForceGarbageCollection())) {
  49             nsk_jvmti_setFailStatus();
  50             return;
  51         }
  52         NSK_DISPLAY0("  ... returnded\n");
  53     }
  54 
  55     NSK_DISPLAY0("Let debugee to finish\n");
  56     if (!NSK_VERIFY(nsk_jvmti_resumeSync()))
  57         return;
  58 }
  59 
  60 /* ============================================================================= */
  61 
  62 /** Agent library initialization. */
  63 #ifdef STATIC_BUILD
  64 JNIEXPORT jint JNICALL Agent_OnLoad_forcegc001(JavaVM *jvm, char *options, void *reserved) {
  65     return Agent_Initialize(jvm, options, reserved);
  66 }
  67 JNIEXPORT jint JNICALL Agent_OnAttach_forcegc001(JavaVM *jvm, char *options, void *reserved) {
  68     return Agent_Initialize(jvm, options, reserved);
  69 }
  70 JNIEXPORT jint JNI_OnLoad_forcegc001(JavaVM *jvm, char *options, void *reserved) {
  71     return JNI_VERSION_1_8;
  72 }
  73 #endif
  74 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
  75     jvmtiEnv* jvmti = NULL;
  76 
  77     if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
  78         return JNI_ERR;
  79 
  80     timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
  81 
  82     if (!NSK_VERIFY((jvmti =
  83             nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
  84         return JNI_ERR;
  85 
  86     if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
  87         return JNI_ERR;
  88 
  89     return JNI_OK;
  90 }
  91 
  92 /* ============================================================================= */
  93 
  94 }