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 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)); } }
JNIEXPORT jobject JNICALL Java_sun_misc_VMSupport_initAgentProperties(JNIEnv *env, jclass cls, jobject props) { char errmsg[128]; if (InitAgentProperties_fp == NULL) { if (!JDK_InitJvmHandle()) { JNU_ThrowInternalError(env, "Handle for JVM not found for symbol lookup"); } InitAgentProperties_fp = (INIT_AGENT_PROPERTIES_FN) JDK_FindJvmEntry("JVM_InitAgentProperties"); if (InitAgentProperties_fp == NULL) { JNU_ThrowInternalError(env, "Mismatched VM version: JVM_InitAgentProperties not found"); return NULL; } } return (*InitAgentProperties_fp)(env, props); }