9583e3657e
Co-authored-by: Ron Pressler <rpressler@openjdk.org> Co-authored-by: Alan Bateman <alanb@openjdk.org> Co-authored-by: Erik Österlund <eosterlund@openjdk.org> Co-authored-by: Andrew Haley <aph@openjdk.org> Co-authored-by: Rickard Bäckman <rbackman@openjdk.org> Co-authored-by: Markus Grönlund <mgronlun@openjdk.org> Co-authored-by: Leonid Mesnik <lmesnik@openjdk.org> Co-authored-by: Serguei Spitsyn <sspitsyn@openjdk.org> Co-authored-by: Chris Plummer <cjplummer@openjdk.org> Co-authored-by: Coleen Phillimore <coleenp@openjdk.org> Co-authored-by: Robbin Ehn <rehn@openjdk.org> Co-authored-by: Stefan Karlsson <stefank@openjdk.org> Co-authored-by: Thomas Schatzl <tschatzl@openjdk.org> Co-authored-by: Sergey Kuksenko <skuksenko@openjdk.org> Reviewed-by: lancea, eosterlund, rehn, sspitsyn, stefank, tschatzl, dfuchs, lmesnik, dcubed, kevinw, amenkov, dlong, mchung, psandoz, bpb, coleenp, smarks, egahlin, mseledtsov, coffeys, darcy
243 lines
8.1 KiB
C++
243 lines
8.1 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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static jvmtiEnv *jvmti = NULL;
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static jrawMonitorID access_lock, wait_lock;
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static jthread thr_ptr = NULL;
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static jint wait_time = 0;
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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 printStateFlags(jint flags) {
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if (flags & JVMTI_THREAD_STATE_SUSPENDED) {
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LOG(" JVMTI_THREAD_STATE_SUSPENDED");
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}
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if (flags & JVMTI_THREAD_STATE_INTERRUPTED) {
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LOG(" JVMTI_THREAD_STATE_INTERRUPTED");
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}
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if (flags & JVMTI_THREAD_STATE_IN_NATIVE) {
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LOG(" JVMTI_THREAD_STATE_IN_NATIVE");
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}
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LOG(" (0x%0x)\n", flags);
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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, "Failed to enable THREAD_START event");
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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, jni, access_lock);
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jvmtiThreadInfo thread_info = get_thread_info(jvmti_env, jni, thread);
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if (thread_info.name != NULL && strcmp(thread_info.name, "tested_thread_thr1") == 0) {
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thr_ptr = jni->NewGlobalRef(thread);
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LOG(">>> ThreadStart: \"%s\", 0x%p\n", thread_info.name, thr_ptr);
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}
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}
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jint Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
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jvmtiCapabilities caps;
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jvmtiEventCallbacks callbacks;
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jint res;
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jvmtiError err;
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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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memset(&caps, 0, sizeof(caps));
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caps.can_support_virtual_threads = true;
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caps.can_suspend = true;
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err = jvmti->AddCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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LOG("(AddCapabilities) unexpected error: %s (%d)\n", TranslateError(err), err);
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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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callbacks.VMInit = &VMInit;
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callbacks.ThreadStart = &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("Failed to enable VM_INIT event: %s (%d)\n", TranslateError(err), err);
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return JNI_ERR;
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}
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return JNI_OK;
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}
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JNIEXPORT void JNICALL
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Java_thrstat02_init(JNIEnv *jni, jclass cls, jint waitTime) {
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wait_time = waitTime * 60000;
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}
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void wait_for(JNIEnv *jni, jint millis) {
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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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JNIEXPORT jboolean JNICALL
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Java_thrstat02_checkStatus0(JNIEnv *jni, jclass cls, jint statInd, jboolean suspended) {
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jboolean result = JNI_TRUE;
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jint thrState;
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jint suspState = -1;
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jint right_stat = (suspended ? JVMTI_THREAD_STATE_SUSPENDED : 0);
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jvmtiError right_ans = (suspended ? JVMTI_ERROR_THREAD_SUSPENDED : JVMTI_ERROR_NONE);
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const char *suspStr = (suspended ? ", suspended" : "");
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jvmtiError err;
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jint millis;
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jboolean timeout_is_reached;
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unsigned int waited_millis;
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if (jvmti == NULL) {
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LOG("JVMTI client was not properly loaded!\n");
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return JNI_FALSE;
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}
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if (thr_ptr == 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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LOG("START checkStatus for \"tested_thread_thr1\" (0x%p%s), check state: %s\n",
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thr_ptr, suspStr, TranslateState(state[statInd]));
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timeout_is_reached = JNI_TRUE;
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for (millis = WAIT_START, waited_millis = 0; millis < wait_time; millis <<= 1) {
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err = jvmti->GetThreadState(thr_ptr, &thrState);
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if (err != JVMTI_ERROR_NONE) {
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LOG("(GetThreadState#%d) unexpected error: %s (%d)\n", statInd, TranslateError(err), err);
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result = JNI_FALSE;
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timeout_is_reached = JNI_FALSE;
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break;
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}
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suspState = thrState & JVMTI_THREAD_STATE_SUSPENDED;
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if (suspended || (thrState & JVMTI_THREAD_STATE_RUNNABLE) == 0 || (state[statInd] == JVMTI_THREAD_STATE_RUNNABLE)) {
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timeout_is_reached = JNI_FALSE;
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break;
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}
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waited_millis += millis;
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wait_for(jni, millis);
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}
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LOG(">>> thread \"tested_thread_thr1\" (0x%p) state: %s (%d)\n",
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thr_ptr, TranslateState(thrState), thrState);
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LOG(">>>\tflags:");
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printStateFlags(suspState);
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if (timeout_is_reached == JNI_TRUE) {
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LOG("Error: timeout (%d secs) has been reached\n", waited_millis / 1000);
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}
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if ((thrState & state[statInd]) == 0) {
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LOG("#1: Wrong thread \"tested_thread_thr1\" (0x%p%s) state:\n", thr_ptr, suspStr);
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LOG(" expected: %s (%d)\n", TranslateState(state[statInd]), state[statInd]);
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LOG(" actual: %s (%d)\n", TranslateState(thrState), thrState);
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result = JNI_FALSE;
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}
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if (suspState != right_stat) {
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LOG("#2: Wrong thread \"tested_thread_thr1\" (0x%p%s) state flags:\n", thr_ptr, suspStr);
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LOG(" expected:");
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printStateFlags(right_stat);
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LOG(" actual:");
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printStateFlags(suspState);
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result = JNI_FALSE;
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}
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err = jvmti->SuspendThread(thr_ptr);
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if (err != right_ans) {
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LOG("#3: Wrong result of SuspendThread() for \"tested_thread_thr1\" (0x%p%s):\n", thr_ptr, suspStr);
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LOG(" expected: %s (%d), actual: %s (%d)\n", TranslateError(right_ans), right_ans, TranslateError(err), err);
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result = JNI_FALSE;
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}
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if (!suspended) {
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// wait till thread is not suspended
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timeout_is_reached = JNI_TRUE;
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for (millis = WAIT_START, waited_millis = 0; millis < wait_time; millis <<= 1) {
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waited_millis += millis;
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wait_for(jni, millis);
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err = jvmti->GetThreadState(thr_ptr, &thrState);
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if (err != JVMTI_ERROR_NONE) {
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LOG("(GetThreadState#%d,after) unexpected error: %s (%d)\n", statInd, TranslateError(err), err);
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timeout_is_reached = JNI_FALSE;
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result = JNI_FALSE;
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break;
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}
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suspState = thrState & JVMTI_THREAD_STATE_SUSPENDED;
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if (suspState) {
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timeout_is_reached = JNI_FALSE;
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break;
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}
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}
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if (timeout_is_reached == JNI_TRUE) {
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LOG("Error: timeout (%d secs) has been reached\n", waited_millis / 1000);
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}
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if ((thrState & state[statInd]) == 0) {
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LOG("#4: Wrong thread \"tested_thread_thr1\" (0x%p) state after SuspendThread:\n", thr_ptr);
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LOG(" expected: %s (%d)\n", TranslateState(state[statInd]), state[statInd]);
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LOG(" actual: %s (%d)\n", TranslateState(thrState), thrState);
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result = JNI_FALSE;
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}
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if (suspState != JVMTI_THREAD_STATE_SUSPENDED) {
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LOG("#5: Wrong thread \"tested_thread_thr1\" (0x%p) state flags", thr_ptr);
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LOG(" after SuspendThread:\n");
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LOG(" expected:");
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printStateFlags(JVMTI_THREAD_STATE_SUSPENDED);
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LOG(" actual:");
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printStateFlags(suspState);
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result = JNI_FALSE;
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}
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resume_thread(jvmti, jni, thr_ptr);
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}
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return result;
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}
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}
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