barriertest.c

来自「This is a resource based on j2me embedde」· C语言 代码 · 共 87 行

/*
 * @(#)BarrierTest.c	1.8 06/10/10
 *
 * Copyright  1990-2008 Sun Microsystems, Inc. All Rights Reserved.  
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER  
 *   
 * This program is free software; you can redistribute it and/or  
 * modify it under the terms of the GNU General Public License version  
 * 2 only, as published by the Free Software Foundation.   
 *   
 * This program is distributed in the hope that it will be useful, but  
 * WITHOUT ANY WARRANTY; without even the implied warranty of  
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU  
 * General Public License version 2 for more details (a copy is  
 * included at /legal/license.txt).   
 *   
 * You should have received a copy of the GNU General Public License  
 * version 2 along with this work; if not, write to the Free Software  
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  
 * 02110-1301 USA   
 *   
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa  
 * Clara, CA 95054 or visit www.sun.com if you need additional  
 * information or have any questions. 
 *
 */

#include "javavm/export/jvm.h"
#include "javavm/export/jni.h"
#include "native/common/jni_util.h"
#include "javavm/include/interpreter.h"
#include "javavm/include/gc_common.h"
#include "javavm/include/porting/threads.h"
#include "javavm/include/porting/time.h"
#include "javavm/include/porting/int.h"
#include "javavm/include/porting/doubleword.h"
#include "javavm/include/clib.h"
#include "javavm/include/indirectmem.h"
#include "javavm/include/directmem.h"
#include "javavm/include/globalroots.h"
#include "javavm/include/localroots.h"
#include "javavm/include/preloader.h"
#include "javavm/include/common_exceptions.h"
#include "generated/offsets/java_lang_Class.h"
#include "generated/offsets/java_lang_Thread.h"
#include "generated/offsets/java_lang_Throwable.h"
#include "generated/jni/java_lang_reflect_Modifier.h"
#include "generated/offsets/java_lang_String.h"
#include "generated/cni/java_lang_String.h"
#include <stdio.h>
#include "BarrierTest.h"


JNIEXPORT jint JNICALL
Java_BarrierTest_checkCardMarking(JNIEnv *env, jobject obj)
{
   jint card = -1;
   CVMExecEnv *ee = CVMjniEnv2ExecEnv(env);

   CVMD_gcUnsafeExec( ee, {
      CVMObject *directObject = CVMID_icellDirect(ee, obj);
      CVMArrayOfRef* directArray;
      CVMObject** elemLoc;
      /* Read testStringArray[] off of BarrierTest */
      CVMD_fieldReadRef(directObject, FIELD_OFFSET(0),(CVMObject*)directArray);
      elemLoc = (CVMObject**)CVMDprivate_arrayElemLoc(directArray, 192);

      card = cardTable[(((int)elemLoc) - ((int) heapBase))/NUM_BYTES_PER_CARD];
   } );
   return card;
}

static void
CVMgcRunGCWithGoal(CVMExecEnv* ee, CVMUint32 goal)
{
    CVMD_gcUnsafeExec(ee, {
        (void)CVMgcStopTheWorldAndGC(ee, goal); /* Do a GC with goal */
    });
}

JNIEXPORT void JNICALL
Java_BarrierTest_doYoungGC(JNIEnv *env, jclass clazz)
{
   CVMExecEnv *ee = CVMjniEnv2ExecEnv(env);
   CVMgcRunGCWithGoal(ee, 1024 * 500);
}