1 /*

     2  * Copyright (c) 2003, 2004, 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 #include <jni.h>

    27 #include "management.h"

    28 #include "sun_management_MemoryPoolImpl.h"

    29 

    30 JNIEXPORT jobject JNICALL

    31 Java_sun_management_MemoryPoolImpl_getMemoryManagers0

    32   (JNIEnv *env, jobject pool)

    33 {

    34     jobject mgrs = jmm_interface->GetMemoryManagers(env, pool);

    35     if (mgrs == NULL) {

    36         // Throw internal error since this implementation expects the

    37         // pool will never become invalid.

    38         JNU_ThrowInternalError(env, "Memory Pool not found");

    39     }

    40     return mgrs;

    41 }

    42 

    43 JNIEXPORT jobject JNICALL

    44 Java_sun_management_MemoryPoolImpl_getUsage0

    45   (JNIEnv *env, jobject pool)

    46 {

    47     jobject usage = jmm_interface->GetMemoryPoolUsage(env, pool);

    48     if (usage == NULL) {

    49         // Throw internal error since this implementation expects the

    50         // pool will never become invalid.

    51         JNU_ThrowInternalError(env, "Memory Pool not found");

    52     }

    53     return usage;

    54 }

    55 

    56 JNIEXPORT jobject JNICALL

    57 Java_sun_management_MemoryPoolImpl_getPeakUsage0

    58   (JNIEnv *env, jobject pool)

    59 {

    60     jobject usage = jmm_interface->GetPeakMemoryPoolUsage(env, pool);

    61     if (usage == NULL) {

    62         // Throw internal error since this implementation expects the

    63         // pool will never become invalid.

    64         JNU_ThrowInternalError(env, "Memory Pool not found");

    65     }

    66     return usage;

    67 }

    68 

    69 JNIEXPORT void JNICALL

    70 Java_sun_management_MemoryPoolImpl_setUsageThreshold0

    71   (JNIEnv *env, jobject pool, jlong current, jlong newThreshold)

    72 {

    73     // Set both high and low threshold to the same threshold

    74     if (newThreshold > current) {

    75         // high threshold has to be set first so that high >= low

    76         jmm_interface->SetPoolThreshold(env, pool,

    77                                         JMM_USAGE_THRESHOLD_HIGH, newThreshold);

    78         jmm_interface->SetPoolThreshold(env, pool,

    79                                         JMM_USAGE_THRESHOLD_LOW, newThreshold);

    80     } else {

    81         // low threshold has to be set first so that high >= low

    82         jmm_interface->SetPoolThreshold(env, pool,

    83                                         JMM_USAGE_THRESHOLD_LOW, newThreshold);

    84         jmm_interface->SetPoolThreshold(env, pool,

    85                                         JMM_USAGE_THRESHOLD_HIGH, newThreshold);

    86     }

    87 }

    88 

    89 JNIEXPORT void JNICALL

    90 Java_sun_management_MemoryPoolImpl_setCollectionThreshold0

    91   (JNIEnv *env, jobject pool, jlong current, jlong newThreshold)

    92 {

    93     // Set both high and low threshold to the same threshold

    94     if (newThreshold > current) {

    95         // high threshold has to be set first so that high >= low

    96         jmm_interface->SetPoolThreshold(env, pool,

    97                                         JMM_COLLECTION_USAGE_THRESHOLD_HIGH,

    98                                         newThreshold);

    99         jmm_interface->SetPoolThreshold(env, pool,

   100                                         JMM_COLLECTION_USAGE_THRESHOLD_LOW,

   101                                         newThreshold);

   102     } else {

   103         // low threshold has to be set first so that high >= low

   104         jmm_interface->SetPoolThreshold(env, pool,

   105                                         JMM_COLLECTION_USAGE_THRESHOLD_LOW,

   106                                         newThreshold);

   107         jmm_interface->SetPoolThreshold(env, pool,

   108                                         JMM_COLLECTION_USAGE_THRESHOLD_HIGH,

   109                                         newThreshold);

   110     }

   111 }

   112 

   113 JNIEXPORT void JNICALL

   114 Java_sun_management_MemoryPoolImpl_resetPeakUsage0

   115   (JNIEnv *env, jobject pool)

   116 {

   117     jvalue value;

   118     value.l = pool;

   119     jmm_interface->ResetStatistic(env, value, JMM_STAT_PEAK_POOL_USAGE);

   120 }

   121 

   122 JNIEXPORT void JNICALL

   123 Java_sun_management_MemoryPoolImpl_setPoolUsageSensor

   124   (JNIEnv *env, jobject pool, jobject sensor)

   125 {

   126     jmm_interface->SetPoolSensor(env, pool,

   127                                  JMM_USAGE_THRESHOLD_HIGH, sensor);

   128 }

   129 

   130 JNIEXPORT void JNICALL

   131 Java_sun_management_MemoryPoolImpl_setPoolCollectionSensor

   132   (JNIEnv *env, jobject pool, jobject sensor)

   133 {

   134     jmm_interface->SetPoolSensor(env, pool,

   135                                  JMM_COLLECTION_USAGE_THRESHOLD_HIGH, sensor);

   136 }

   137 

   138 JNIEXPORT jobject JNICALL

   139 Java_sun_management_MemoryPoolImpl_getCollectionUsage0

   140   (JNIEnv *env, jobject pool)

   141 {

   142     return jmm_interface->GetPoolCollectionUsage(env, pool);

   143 }