153 lines
5.1 KiB
C++
153 lines
5.1 KiB
C++
/*
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* Copyright (c) 2004, 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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#include <stdio.h>
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#include <string.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 WAIT_START 100
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#define WAIT_TIME (2*60*1000)
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static jvmtiEnv *jvmti = NULL;
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static jrawMonitorID access_lock;
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static jrawMonitorID wait_lock;
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static jthread tested_thread_thr1 = NULL;
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static jint state[] = {
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JVMTI_THREAD_STATE_RUNNABLE,
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JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
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JVMTI_THREAD_STATE_IN_OBJECT_WAIT
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};
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void JNICALL
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VMInit(jvmtiEnv *jvmti_env, JNIEnv *jni, jthread thr) {
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jvmtiError err = jvmti_env->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_THREAD_START, NULL);
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check_jvmti_status(jni, err, "Error in SetEventNotificationMode");
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err = jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_VIRTUAL_THREAD_START, NULL);
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check_jvmti_status(jni, err, "Error in SetEventNotificationMode");
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}
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void JNICALL
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ThreadStart(jvmtiEnv *jvmti_env, JNIEnv *jni, jthread thread) {
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RawMonitorLocker rml = RawMonitorLocker(jvmti_env, jni, access_lock);
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jvmtiThreadInfo thread_info = get_thread_info(jvmti, jni, thread);
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LOG(">>> ThreadStart: \"%s\"\n", thread_info.name);
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if (thread_info.name != NULL && strcmp(thread_info.name, "tested_thread_thr1") == 0) {
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tested_thread_thr1 = jni->NewGlobalRef(thread);
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LOG(">>> ThreadStart: \"%s\", 0x%p\n", thread_info.name, tested_thread_thr1);
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}
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}
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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;
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jvmtiError err;
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LOG("Agent_OnLoad started\n");
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res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);
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if (res != JNI_OK || jvmti == NULL) {
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LOG("Wrong result of a valid call to GetEnv!\n");
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return JNI_ERR;
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}
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access_lock = create_raw_monitor(jvmti, "_access_lock");
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wait_lock = create_raw_monitor(jvmti, "_wait_lock");
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jvmtiCapabilities caps;
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memset(&caps, 0, sizeof(caps));
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caps.can_support_virtual_threads = 1;
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err = jvmti->AddCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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LOG("error in JVMTI AddCapabilities: %d\n", err);
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return JNI_ERR;
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}
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jvmtiEventCallbacks callbacks;
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callbacks.VMInit = &VMInit;
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callbacks.ThreadStart = &ThreadStart;
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callbacks.VirtualThreadStart = &ThreadStart;
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err = jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks));
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if (err != JVMTI_ERROR_NONE) {
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LOG("(SetEventCallbacks) unexpected error: %s (%d)\n", TranslateError(err), err);
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return JNI_ERR;
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}
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err = jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_VM_INIT, NULL);
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if (err != JVMTI_ERROR_NONE) {
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LOG("(SetEventNotificationMode) unexpected error: %s (%d)\n", TranslateError(err), err);
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return JNI_ERR;
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}
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LOG("Agent_OnLoad finished\n");
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return JNI_OK;
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}
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JNIEXPORT jboolean JNICALL
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Java_thrstat01_checkStatus0(JNIEnv *jni, jclass cls, jint stat_ind) {
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jboolean result = JNI_TRUE;
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jint thread_state;
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LOG("native method checkStatus started\n");
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if (tested_thread_thr1 == NULL) {
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LOG("Missing thread \"tested_thread_thr1\" start event\n");
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return JNI_FALSE;
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}
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jvmtiThreadInfo thread_info = get_thread_info(jvmti, jni, tested_thread_thr1);
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LOG("Testing thread: \"%s\"\n", thread_info.name);
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/* wait until thread gets an expected state */
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for (jint millis = WAIT_START; millis < WAIT_TIME; millis <<= 1) {
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thread_state = get_thread_state(jvmti, jni, tested_thread_thr1);
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LOG(">>> thread \"tested_thread_thr1\" (0x%p) state: %s (%d)\n", tested_thread_thr1, TranslateState(thread_state), thread_state);
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if ((thread_state & state[stat_ind]) != 0) {
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break;
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}
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RawMonitorLocker rml = RawMonitorLocker(jvmti, jni, wait_lock);
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rml.wait(millis);
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}
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LOG(">>> thread \"tested_thread_thr1\" (0x%p) state: %s (%d)\n", tested_thread_thr1, TranslateState(thread_state), thread_state);
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if ((thread_state & state[stat_ind]) == 0) {
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LOG("Wrong thread \"tested_thread_thr1\" (0x%p) state:\n", tested_thread_thr1);
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LOG(" expected: %s (%d)\n", TranslateState(state[stat_ind]), state[stat_ind]);
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LOG(" actual: %s (%d)\n", TranslateState(thread_state), thread_state);
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result = JNI_FALSE;
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}
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LOG("native method checkStatus finished\n");
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return result;
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}
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}
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