1 /*

     2  * Copyright (c) 2003, 2016, 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 <stdlib.h>

    28 #include "jvm.h"

    29 #include "management.h"

    30 #include "sun_management_VMManagementImpl.h"

    31 

    32 #define MAX_VERSION_LEN   20

    33 

    34 JNIEXPORT jstring JNICALL

    35 Java_sun_management_VMManagementImpl_getVersion0

    36   (JNIEnv *env, jclass dummy)

    37 {

    38     char buf[MAX_VERSION_LEN];

    39     jstring version_string = NULL;

    40 

    41     unsigned int major = ((unsigned int) jmm_version & 0x0FFF0000) >> 16;

    42     unsigned int minor = ((unsigned int) jmm_version & 0xFF00) >> 8;

    43 

    44     // for internal use

    45     unsigned int micro = (unsigned int) jmm_version & 0xFF;

    46 

    47     sprintf(buf, "%d.%d", major, minor);

    48     version_string = (*env)->NewStringUTF(env, buf);

    49     return version_string;

    50 }

    51 

    52 static void setStaticBooleanField

    53    (JNIEnv* env, jclass cls, const char* name, jboolean value)

    54 {

    55     jfieldID fid;

    56     fid = (*env)->GetStaticFieldID(env, cls, name, "Z");

    57     if (fid != 0) {

    58         (*env)->SetStaticBooleanField(env, cls, fid, value);

    59     }

    60 }

    61 

    62 JNIEXPORT void JNICALL

    63 Java_sun_management_VMManagementImpl_initOptionalSupportFields

    64   (JNIEnv *env, jclass cls)

    65 {

    66     jmmOptionalSupport mos;

    67     jint ret = jmm_interface->GetOptionalSupport(env, &mos);

    68 

    69     jboolean value;

    70 

    71     value = mos.isCompilationTimeMonitoringSupported;

    72     setStaticBooleanField(env, cls, "compTimeMonitoringSupport", value);

    73 

    74     value = mos.isThreadContentionMonitoringSupported;

    75     setStaticBooleanField(env, cls, "threadContentionMonitoringSupport", value);

    76 

    77     value = mos.isCurrentThreadCpuTimeSupported;

    78     setStaticBooleanField(env, cls, "currentThreadCpuTimeSupport", value);

    79 

    80     value = mos.isOtherThreadCpuTimeSupported;

    81     setStaticBooleanField(env, cls, "otherThreadCpuTimeSupport", value);

    82 

    83     if (jmm_version >= JMM_VERSION_1_1) {

    84         value = mos.isObjectMonitorUsageSupported;

    85         setStaticBooleanField(env, cls, "objectMonitorUsageSupport", value);

    86 

    87         value = mos.isSynchronizerUsageSupported;

    88         setStaticBooleanField(env, cls, "synchronizerUsageSupport", value);

    89     } else {

    90         setStaticBooleanField(env, cls, "objectMonitorUsageSupport", JNI_FALSE);

    91         setStaticBooleanField(env, cls, "synchronizerUsageSupport", JNI_FALSE);

    92     }

    93 

    94     value = mos.isThreadAllocatedMemorySupported;

    95     setStaticBooleanField(env, cls, "threadAllocatedMemorySupport", value);

    96 

    97     value = mos.isRemoteDiagnosticCommandsSupported;

    98     setStaticBooleanField(env, cls, "remoteDiagnosticCommandsSupport", value);

    99 }

   100 

   101 JNIEXPORT jobjectArray JNICALL

   102 Java_sun_management_VMManagementImpl_getVmArguments0

   103   (JNIEnv *env, jobject dummy)

   104 {

   105     return JVM_GetVmArguments(env);

   106 }

   107 

   108 JNIEXPORT jlong JNICALL

   109 Java_sun_management_VMManagementImpl_getTotalClassCount

   110   (JNIEnv *env, jobject dummy)

   111 {

   112     /* JMM_CLASS_LOADED_COUNT is the total number of classes loaded */

   113     jlong count = jmm_interface->GetLongAttribute(env, NULL,

   114                                                   JMM_CLASS_LOADED_COUNT);

   115     return count;

   116 }

   117 

   118 JNIEXPORT jlong JNICALL

   119 Java_sun_management_VMManagementImpl_getUnloadedClassCount

   120   (JNIEnv *env, jobject dummy)

   121 {

   122     /* JMM_CLASS_UNLOADED_COUNT is the total number of classes unloaded */

   123     jlong count = jmm_interface->GetLongAttribute(env, NULL,

   124                                                   JMM_CLASS_UNLOADED_COUNT);

   125     return count;

   126 }

   127 

   128 JNIEXPORT jboolean JNICALL

   129 Java_sun_management_VMManagementImpl_getVerboseGC

   130   (JNIEnv *env, jobject dummy)

   131 {

   132     return jmm_interface->GetBoolAttribute(env, JMM_VERBOSE_GC);

   133 }

   134 

   135 JNIEXPORT jboolean JNICALL

   136 Java_sun_management_VMManagementImpl_getVerboseClass

   137   (JNIEnv *env, jobject dummy)

   138 {

   139     return jmm_interface->GetBoolAttribute(env, JMM_VERBOSE_CLASS);

   140 }

   141 

   142 JNIEXPORT jlong JNICALL

   143 Java_sun_management_VMManagementImpl_getTotalThreadCount

   144   (JNIEnv *env, jobject dummy)

   145 {

   146     return jmm_interface->GetLongAttribute(env, NULL,

   147                                            JMM_THREAD_TOTAL_COUNT);

   148 }

   149 

   150 JNIEXPORT jint JNICALL

   151 Java_sun_management_VMManagementImpl_getLiveThreadCount

   152   (JNIEnv *env, jobject dummy)

   153 {

   154     jlong count = jmm_interface->GetLongAttribute(env, NULL,

   155                                                   JMM_THREAD_LIVE_COUNT);

   156     return (jint) count;

   157 }

   158 

   159 JNIEXPORT jint JNICALL

   160 Java_sun_management_VMManagementImpl_getPeakThreadCount

   161   (JNIEnv *env, jobject dummy)

   162 {

   163     jlong count = jmm_interface->GetLongAttribute(env, NULL,

   164                                                   JMM_THREAD_PEAK_COUNT);

   165     return (jint) count;

   166 }

   167 

   168 JNIEXPORT jint JNICALL

   169 Java_sun_management_VMManagementImpl_getDaemonThreadCount

   170   (JNIEnv *env, jobject dummy)

   171 {

   172     jlong count = jmm_interface->GetLongAttribute(env, NULL,

   173                                                   JMM_THREAD_DAEMON_COUNT);

   174     return (jint) count;

   175 }

   176 

   177 JNIEXPORT jlong JNICALL

   178 Java_sun_management_VMManagementImpl_getTotalCompileTime

   179   (JNIEnv *env, jobject dummy)

   180 {

   181     return jmm_interface->GetLongAttribute(env, NULL,

   182                                            JMM_COMPILE_TOTAL_TIME_MS);

   183 }

   184 

   185 JNIEXPORT jlong JNICALL

   186 Java_sun_management_VMManagementImpl_getStartupTime

   187   (JNIEnv *env, jobject dummy)

   188 {

   189     return jmm_interface->GetLongAttribute(env, NULL,

   190                                            JMM_JVM_INIT_DONE_TIME_MS);

   191 }

   192 

   193 JNIEXPORT jlong JNICALL

   194 Java_sun_management_VMManagementImpl_getUptime0

   195   (JNIEnv *env, jobject dummy)

   196 {

   197     return jmm_interface->GetLongAttribute(env, NULL, JMM_JVM_UPTIME_MS);

   198 }

   199 

   200 JNIEXPORT jboolean JNICALL

   201 Java_sun_management_VMManagementImpl_isThreadContentionMonitoringEnabled

   202   (JNIEnv *env, jobject dummy)

   203 {

   204     return jmm_interface->GetBoolAttribute(env,

   205                                            JMM_THREAD_CONTENTION_MONITORING);

   206 }

   207 

   208 JNIEXPORT jboolean JNICALL

   209 Java_sun_management_VMManagementImpl_isThreadCpuTimeEnabled

   210   (JNIEnv *env, jobject dummy)

   211 {

   212     return jmm_interface->GetBoolAttribute(env, JMM_THREAD_CPU_TIME);

   213 }

   214 

   215 JNIEXPORT jboolean JNICALL

   216 Java_sun_management_VMManagementImpl_isThreadAllocatedMemoryEnabled

   217   (JNIEnv *env, jobject dummy)

   218 {

   219     return jmm_interface->GetBoolAttribute(env, JMM_THREAD_ALLOCATED_MEMORY);

   220 }

   221 

   222 JNIEXPORT jint JNICALL

   223 Java_sun_management_VMManagementImpl_getProcessId

   224   (JNIEnv *env, jobject dummy)

   225 {

   226     jlong pid = jmm_interface->GetLongAttribute(env, NULL,

   227                                                 JMM_OS_PROCESS_ID);

   228     return (jint) pid;

   229 }

   230 

   231 JNIEXPORT jint JNICALL

   232 Java_sun_management_VMManagementImpl_getAvailableProcessors

   233   (JNIEnv *env, jobject dummy)

   234 {

   235     return JVM_ActiveProcessorCount();

   236 }

   237 

   238 JNIEXPORT jlong JNICALL

   239 Java_sun_management_VMManagementImpl_getSafepointCount

   240   (JNIEnv *env, jobject dummy)

   241 {

   242     return jmm_interface->GetLongAttribute(env, NULL,

   243                                            JMM_SAFEPOINT_COUNT);

   244 }

   245 

   246 JNIEXPORT jlong JNICALL

   247 Java_sun_management_VMManagementImpl_getTotalSafepointTime

   248   (JNIEnv *env, jobject dummy)

   249 {

   250     return jmm_interface->GetLongAttribute(env, NULL,

   251                                            JMM_TOTAL_STOPPED_TIME_MS);

   252 }

   253 

   254 JNIEXPORT jlong JNICALL

   255 Java_sun_management_VMManagementImpl_getSafepointSyncTime

   256   (JNIEnv *env, jobject dummy)

   257 {

   258     return jmm_interface->GetLongAttribute(env, NULL,

   259                                            JMM_TOTAL_SAFEPOINTSYNC_TIME_MS);

   260 }

   261 

   262 JNIEXPORT jlong JNICALL

   263 Java_sun_management_VMManagementImpl_getTotalApplicationNonStoppedTime

   264   (JNIEnv *env, jobject dummy)

   265 {

   266     return jmm_interface->GetLongAttribute(env, NULL,

   267                                            JMM_TOTAL_APP_TIME_MS);

   268 }

   269 

   270 JNIEXPORT jlong JNICALL

   271 Java_sun_management_VMManagementImpl_getLoadedClassSize

   272   (JNIEnv *env, jobject dummy)

   273 {

   274     return jmm_interface->GetLongAttribute(env, NULL,

   275                                            JMM_CLASS_LOADED_BYTES);

   276 }

   277 

   278 JNIEXPORT jlong JNICALL

   279 Java_sun_management_VMManagementImpl_getUnloadedClassSize

   280   (JNIEnv *env, jobject dummy)

   281 {

   282     return jmm_interface->GetLongAttribute(env, NULL,

   283                                            JMM_CLASS_UNLOADED_BYTES);

   284 }

   285 JNIEXPORT jlong JNICALL

   286 Java_sun_management_VMManagementImpl_getClassLoadingTime

   287   (JNIEnv *env, jobject dummy)

   288 {

   289     return jmm_interface->GetLongAttribute(env, NULL,

   290                                            JMM_TOTAL_CLASSLOAD_TIME_MS);

   291 }

   292 

   293 

   294 JNIEXPORT jlong JNICALL

   295 Java_sun_management_VMManagementImpl_getMethodDataSize

   296   (JNIEnv *env, jobject dummy)

   297 {

   298     return jmm_interface->GetLongAttribute(env, NULL,

   299                                            JMM_METHOD_DATA_SIZE_BYTES);

   300 }

   301 

   302 JNIEXPORT jlong JNICALL

   303 Java_sun_management_VMManagementImpl_getInitializedClassCount

   304   (JNIEnv *env, jobject dummy)

   305 {

   306     return jmm_interface->GetLongAttribute(env, NULL,

   307                                            JMM_CLASS_INIT_TOTAL_COUNT);

   308 }

   309 

   310 JNIEXPORT jlong JNICALL

   311 Java_sun_management_VMManagementImpl_getClassInitializationTime

   312   (JNIEnv *env, jobject dummy)

   313 {

   314     return jmm_interface->GetLongAttribute(env, NULL,

   315                                            JMM_CLASS_INIT_TOTAL_TIME_MS);

   316 }

   317 

   318 JNIEXPORT jlong JNICALL

   319 Java_sun_management_VMManagementImpl_getClassVerificationTime

   320   (JNIEnv *env, jobject dummy)

   321 {

   322     return jmm_interface->GetLongAttribute(env, NULL,

   323                                            JMM_CLASS_VERIFY_TOTAL_TIME_MS);

   324 }