| /* |
| * Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 in the LICENSE file that |
| * accompanied this code). |
| * |
| * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include <string.h> |
| |
| #include "jni.h" |
| #include "jni_util.h" |
| #include "jlong.h" |
| #include "jvm.h" |
| #include "jdk_util.h" |
| |
| #include "sun_misc_VM.h" |
| |
| typedef jintArray (JNICALL *GET_THREAD_STATE_VALUES_FN)(JNIEnv *, jint); |
| typedef jobjectArray (JNICALL *GET_THREAD_STATE_NAMES_FN)(JNIEnv *, jint, jintArray); |
| |
| static GET_THREAD_STATE_VALUES_FN GetThreadStateValues_fp = NULL; |
| static GET_THREAD_STATE_NAMES_FN GetThreadStateNames_fp = NULL; |
| |
| static void get_thread_state_info(JNIEnv *env, jint state, |
| jobjectArray stateValues, |
| jobjectArray stateNames) { |
| char errmsg[128]; |
| jintArray values; |
| jobjectArray names; |
| |
| values = (*GetThreadStateValues_fp)(env, state); |
| if (values == NULL) { |
| sprintf(errmsg, "Mismatched VM version: Thread state (%d) " |
| "not supported", state); |
| JNU_ThrowInternalError(env, errmsg); |
| return; |
| } |
| /* state is also used as the index in the array */ |
| (*env)->SetObjectArrayElement(env, stateValues, state, values); |
| |
| names = (*GetThreadStateNames_fp)(env, state, values); |
| if (names == NULL) { |
| sprintf(errmsg, "Mismatched VM version: Thread state (%d) " |
| "not supported", state); |
| JNU_ThrowInternalError(env, errmsg); |
| return; |
| } |
| (*env)->SetObjectArrayElement(env, stateNames, state, names); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_misc_VM_getThreadStateValues(JNIEnv *env, jclass cls, |
| jobjectArray values, |
| jobjectArray names) |
| { |
| char errmsg[128]; |
| |
| // check if the number of Thread.State enum constants |
| // matches the number of states defined in jvm.h |
| jsize len1 = (*env)->GetArrayLength(env, values); |
| jsize len2 = (*env)->GetArrayLength(env, names); |
| if (len1 != JAVA_THREAD_STATE_COUNT || len2 != JAVA_THREAD_STATE_COUNT) { |
| sprintf(errmsg, "Mismatched VM version: JAVA_THREAD_STATE_COUNT = %d " |
| " but JDK expects %d / %d", |
| JAVA_THREAD_STATE_COUNT, len1, len2); |
| JNU_ThrowInternalError(env, errmsg); |
| return; |
| } |
| |
| if (GetThreadStateValues_fp == NULL) { |
| GetThreadStateValues_fp = (GET_THREAD_STATE_VALUES_FN) |
| JDK_FindJvmEntry("JVM_GetThreadStateValues"); |
| if (GetThreadStateValues_fp == NULL) { |
| JNU_ThrowInternalError(env, |
| "Mismatched VM version: JVM_GetThreadStateValues not found"); |
| return; |
| } |
| |
| GetThreadStateNames_fp = (GET_THREAD_STATE_NAMES_FN) |
| JDK_FindJvmEntry("JVM_GetThreadStateNames"); |
| if (GetThreadStateNames_fp == NULL) { |
| JNU_ThrowInternalError(env, |
| "Mismatched VM version: JVM_GetThreadStateNames not found"); |
| return ; |
| } |
| } |
| |
| get_thread_state_info(env, JAVA_THREAD_STATE_NEW, values, names); |
| get_thread_state_info(env, JAVA_THREAD_STATE_RUNNABLE, values, names); |
| get_thread_state_info(env, JAVA_THREAD_STATE_BLOCKED, values, names); |
| get_thread_state_info(env, JAVA_THREAD_STATE_WAITING, values, names); |
| get_thread_state_info(env, JAVA_THREAD_STATE_TIMED_WAITING, values, names); |
| get_thread_state_info(env, JAVA_THREAD_STATE_TERMINATED, values, names); |
| } |
| |
| JNIEXPORT jobject JNICALL |
| Java_sun_misc_VM_latestUserDefinedLoader(JNIEnv *env, jclass cls) { |
| return JVM_LatestUserDefinedLoader(env); |
| } |
| |
| typedef void (JNICALL *GetJvmVersionInfo_fp)(JNIEnv*, jvm_version_info*, size_t); |
| |
| JNIEXPORT void JNICALL |
| Java_sun_misc_VM_initialize(JNIEnv *env, jclass cls) { |
| GetJvmVersionInfo_fp func_p; |
| |
| if (!JDK_InitJvmHandle()) { |
| JNU_ThrowInternalError(env, "Handle for JVM not found for symbol lookup"); |
| return; |
| } |
| |
| func_p = (GetJvmVersionInfo_fp) JDK_FindJvmEntry("JVM_GetVersionInfo"); |
| if (func_p != NULL) { |
| jvm_version_info info; |
| |
| memset(&info, 0, sizeof(info)); |
| |
| /* obtain the JVM version info */ |
| (*func_p)(env, &info, sizeof(info)); |
| } |
| } |
| |