| /* |
| * Copyright (c) 2004, 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. |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "jni.h" |
| #include "jvmti.h" |
| |
| #include "agent_util.h" |
| |
| #include "Monitor.hpp" |
| |
| /* Implementation of the Monitor class */ |
| |
| Monitor::Monitor(jvmtiEnv *jvmti, JNIEnv *env, jobject object) |
| { |
| jvmtiError err; |
| jclass klass; |
| char *signature; |
| |
| /* Clear counters */ |
| contends = 0; |
| waits = 0; |
| timeouts = 0; |
| |
| /* Get the class name for this monitor object */ |
| (void)strcpy(name, "Unknown"); |
| klass = env->GetObjectClass(object); |
| if ( klass == NULL ) { |
| fatal_error("ERROR: Cannot find jclass from jobject\n"); |
| } |
| err = jvmti->GetClassSignature(klass, &signature, NULL); |
| check_jvmti_error(jvmti, err, "get class signature"); |
| if ( signature != NULL ) { |
| (void)strncpy(name, signature, (int)sizeof(name)-1); |
| deallocate(jvmti, signature); |
| } |
| } |
| |
| Monitor::~Monitor() |
| { |
| stdout_message("Monitor %s summary: %d contends, %d waits, %d timeouts\n", |
| name, contends, waits, timeouts); |
| } |
| |
| int Monitor::get_slot() |
| { |
| return slot; |
| } |
| |
| void Monitor::set_slot(int aslot) |
| { |
| slot = aslot; |
| } |
| |
| void Monitor::contended() |
| { |
| contends++; |
| } |
| |
| void Monitor::waited() |
| { |
| waits++; |
| } |
| |
| void Monitor::timeout() |
| { |
| timeouts++; |
| } |