| /* |
| * Copyright (c) 2004, 2015, Oracle and/or its affiliates. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * - Neither the name of Oracle nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /* |
| * This source code is provided to illustrate the usage of a given feature |
| * or technique and has been deliberately simplified. Additional steps |
| * required for a production-quality application, such as security checks, |
| * input validation and proper error handling, might not be present in |
| * this sample code. |
| */ |
| |
| #ifdef STATIC_BUILD |
| #define Thread WaiterThread |
| #endif |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "jni.h" |
| #include "jvmti.h" |
| |
| #include "agent_util.h" |
| |
| #include "Thread.hpp" |
| |
| /* Implementation of the Thread class */ |
| |
| Thread::Thread(jvmtiEnv *jvmti, JNIEnv *env, jthread thread) |
| { |
| jvmtiError err; |
| jvmtiThreadInfo info; |
| |
| /* Get and save the name of the thread */ |
| info.name = NULL; |
| (void)strcpy(name, "Unknown"); |
| err = jvmti->GetThreadInfo(thread, &info); |
| check_jvmti_error(jvmti, err, "get thread info"); |
| if ( info.name != NULL ) { |
| (void)strncpy(name, info.name, (int)sizeof(name)-1); |
| name[(int)sizeof(name)-1] = 0; |
| deallocate(jvmti, info.name); |
| } |
| |
| /* Clear thread counters */ |
| contends = 0; |
| waits = 0; |
| timeouts = 0; |
| } |
| |
| Thread::~Thread() |
| { |
| /* Send out summary message */ |
| stdout_message("Thread %s summary: %d waits plus %d contended\n", |
| name, waits, contends); |
| } |
| |
| void Thread::monitor_contended_enter(jvmtiEnv* jvmti, JNIEnv *env, |
| jthread thread, jobject object) |
| { |
| contends++; |
| } |
| |
| void Thread::monitor_wait(jvmtiEnv* jvmti, JNIEnv *env, |
| jthread thread, jobject object, jlong timeout) |
| { |
| waits++; |
| } |
| |
| void Thread::monitor_waited(jvmtiEnv* jvmti, JNIEnv *env, |
| jthread thread, jobject object, jboolean timed_out) |
| { |
| if ( timed_out ) { |
| timeouts++; |
| } |
| } |