J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * |
| 8 | * - Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * - Neither the name of Sun Microsystems nor the names of its |
| 16 | * contributors may be used to endorse or promote products derived |
| 17 | * from this software without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| 20 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 21 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 23 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 24 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 25 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 26 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 27 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 28 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 29 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #include <stdio.h> |
| 33 | #include <stdlib.h> |
| 34 | #include <string.h> |
| 35 | |
| 36 | #include "jni.h" |
| 37 | #include "jvmti.h" |
| 38 | |
| 39 | #include "agent_util.h" |
| 40 | |
| 41 | #include "Monitor.hpp" |
| 42 | |
| 43 | /* Implementation of the Monitor class */ |
| 44 | |
| 45 | Monitor::Monitor(jvmtiEnv *jvmti, JNIEnv *env, jobject object) |
| 46 | { |
| 47 | jvmtiError err; |
| 48 | jclass klass; |
| 49 | char *signature; |
| 50 | |
| 51 | /* Clear counters */ |
| 52 | contends = 0; |
| 53 | waits = 0; |
| 54 | timeouts = 0; |
| 55 | |
| 56 | /* Get the class name for this monitor object */ |
| 57 | (void)strcpy(name, "Unknown"); |
| 58 | klass = env->GetObjectClass(object); |
| 59 | if ( klass == NULL ) { |
| 60 | fatal_error("ERROR: Cannot find jclass from jobject\n"); |
| 61 | } |
| 62 | err = jvmti->GetClassSignature(klass, &signature, NULL); |
| 63 | check_jvmti_error(jvmti, err, "get class signature"); |
| 64 | if ( signature != NULL ) { |
| 65 | (void)strncpy(name, signature, (int)sizeof(name)-1); |
| 66 | deallocate(jvmti, signature); |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | Monitor::~Monitor() |
| 71 | { |
| 72 | stdout_message("Monitor %s summary: %d contends, %d waits, %d timeouts\n", |
| 73 | name, contends, waits, timeouts); |
| 74 | } |
| 75 | |
| 76 | void Monitor::contended() |
| 77 | { |
| 78 | contends++; |
| 79 | } |
| 80 | |
| 81 | void Monitor::waited() |
| 82 | { |
| 83 | waits++; |
| 84 | } |
| 85 | |
| 86 | void Monitor::timeout() |
| 87 | { |
| 88 | timeouts++; |
| 89 | } |