116 lines
4.1 KiB
C++
116 lines
4.1 KiB
C++
/*
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* Copyright (c) 2007, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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*/
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#include <stdio.h>
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#include "jvmti.h"
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#include "jvmti_common.h"
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extern "C" {
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#define THREAD_STATE_MASK ~(JVMTI_THREAD_STATE_SUSPENDED \
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| JVMTI_THREAD_STATE_INTERRUPTED \
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| JVMTI_THREAD_STATE_IN_NATIVE \
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| JVMTI_THREAD_STATE_VENDOR_1 \
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| JVMTI_THREAD_STATE_VENDOR_2 \
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| JVMTI_THREAD_STATE_VENDOR_3)
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static int g_ThreadState[] = {
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0, /* TS_NEW */
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JVMTI_THREAD_STATE_TERMINATED, /* TS_TERMINATED */
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JVMTI_THREAD_STATE_ALIVE
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| JVMTI_THREAD_STATE_RUNNABLE, /* TS_RUN_RUNNING */
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JVMTI_THREAD_STATE_ALIVE
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| JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, /* TS_RUN_BLOCKED */
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JVMTI_THREAD_STATE_ALIVE
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| JVMTI_THREAD_STATE_IN_OBJECT_WAIT
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| JVMTI_THREAD_STATE_WAITING
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| JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT, /* TS_RUN_WAIT_TIMED */
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JVMTI_THREAD_STATE_ALIVE
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| JVMTI_THREAD_STATE_IN_OBJECT_WAIT
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| JVMTI_THREAD_STATE_WAITING
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| JVMTI_THREAD_STATE_WAITING_INDEFINITELY, /* TS_RUN_WAIT_INDEF */
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JVMTI_THREAD_STATE_ALIVE
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| JVMTI_THREAD_STATE_PARKED
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| JVMTI_THREAD_STATE_WAITING
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| JVMTI_THREAD_STATE_WAITING_INDEFINITELY, /* TS_RUN_WAIT_PARKED_INDEF */
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JVMTI_THREAD_STATE_ALIVE
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| JVMTI_THREAD_STATE_PARKED
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| JVMTI_THREAD_STATE_WAITING
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| JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT, /* TS_RUN_WAIT_PARKED_TIMED */
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JVMTI_THREAD_STATE_ALIVE
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| JVMTI_THREAD_STATE_SLEEPING
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| JVMTI_THREAD_STATE_WAITING
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| JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT, /* TS_RUN_WAIT_SLEEPING */
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};
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static jvmtiEnv *jvmti_env = NULL;
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static int g_wait_time = 1000;
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jrawMonitorID wait_lock; /* Monitor is used just for sleeping */
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JNIEXPORT jint JNICALL
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Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
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jint res = jvm->GetEnv((void **) &jvmti_env, JVMTI_VERSION_1_1);
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if (res != JNI_OK || !jvmti_env) {
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LOG("Agent_OnLoad: Error: GetEnv returned error or NULL\n");
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return JNI_ERR;
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}
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wait_lock = create_raw_monitor(jvmti_env, "beast");
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return JNI_OK;
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}
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JNIEXPORT void JNICALL
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Java_thrstat05_setWaitTime(JNIEnv *jni, jclass klass, jint wait_time) {
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g_wait_time = wait_time;
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}
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JNIEXPORT jboolean JNICALL
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Java_thrstat05_checkThreadState(JNIEnv *jni, jclass klass, jthread thread, jint stateIdx) {
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int wait_time = 10;
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/* Repeat querying status until wait_time < g_wait_time */
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do {
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jint thrState = get_thread_state(jvmti_env, jni, thread);
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jint maskedThrState = thrState & THREAD_STATE_MASK;
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LOG("GetThreadState = %x. Masked: %x. Must be: %x\n", thrState, maskedThrState, g_ThreadState[stateIdx]);
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fflush(stdout);
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if (maskedThrState == g_ThreadState[stateIdx])
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return JNI_TRUE;
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LOG("checkThreadState: wait %d ms\n", wait_time);
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fflush(stdout);
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RawMonitorLocker wait_locker = RawMonitorLocker(jvmti_env, jni,wait_lock);
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wait_locker.wait(wait_time);
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wait_time <<= 1;
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} while (wait_time < g_wait_time);
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return JNI_FALSE;
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}
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}
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