author | bpb |
Mon, 24 Mar 2014 14:35:32 -0700 | |
changeset 23574 | 089eeff81e86 |
parent 23010 | 6dadb192ad81 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2001, 2013, 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. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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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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/* |
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* eventFilter |
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* |
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* This module handles event filteration and the enabling/disabling |
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* of the corresponding events. Used for filters on JDI EventRequests |
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* and also internal requests. Our data is in a private hidden section |
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* of the HandlerNode's data. See comment for enclosing |
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* module eventHandler. |
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*/ |
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#include "util.h" |
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#include "eventFilter.h" |
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#include "eventFilterRestricted.h" |
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#include "eventHandlerRestricted.h" |
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#include "stepControl.h" |
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#include "threadControl.h" |
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#include "SDE.h" |
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#include "jvmti.h" |
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typedef struct ClassFilter { |
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jclass clazz; |
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} ClassFilter; |
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typedef struct LocationFilter { |
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jclass clazz; |
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jmethodID method; |
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jlocation location; |
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} LocationFilter; |
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typedef struct ThreadFilter { |
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jthread thread; |
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} ThreadFilter; |
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typedef struct CountFilter { |
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jint count; |
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} CountFilter; |
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typedef struct ConditionalFilter { |
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jint exprID; |
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} ConditionalFilter; |
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typedef struct FieldFilter { |
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jclass clazz; |
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jfieldID field; |
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} FieldFilter; |
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typedef struct ExceptionFilter { |
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jclass exception; |
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jboolean caught; |
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jboolean uncaught; |
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} ExceptionFilter; |
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typedef struct InstanceFilter { |
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jobject instance; |
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} InstanceFilter; |
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typedef struct StepFilter { |
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jint size; |
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jint depth; |
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jthread thread; |
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} StepFilter; |
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typedef struct MatchFilter { |
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char *classPattern; |
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} MatchFilter; |
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typedef struct SourceNameFilter { |
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char *sourceNamePattern; |
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} SourceNameFilter; |
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typedef struct Filter_ { |
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jbyte modifier; |
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union { |
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struct ClassFilter ClassOnly; |
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struct LocationFilter LocationOnly; |
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struct ThreadFilter ThreadOnly; |
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struct CountFilter Count; |
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struct ConditionalFilter Conditional; |
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struct FieldFilter FieldOnly; |
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struct ExceptionFilter ExceptionOnly; |
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struct InstanceFilter InstanceOnly; |
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struct StepFilter Step; |
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struct MatchFilter ClassMatch; |
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struct MatchFilter ClassExclude; |
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struct SourceNameFilter SourceNameOnly; |
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} u; |
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} Filter; |
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/* The filters array is allocated to the specified filterCount. |
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* Theoretically, some compiler could do range checking on this |
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* array - so, we define it to have a ludicrously large size so |
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* that this range checking won't get upset. |
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* |
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* The actual allocated number of bytes is computed using the |
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* offset of "filters" and so is not effected by this number. |
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*/ |
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#define MAX_FILTERS 10000 |
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typedef struct EventFilters_ { |
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jint filterCount; |
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Filter filters[MAX_FILTERS]; |
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} EventFilters; |
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typedef struct EventFilterPrivate_HandlerNode_ { |
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EventHandlerRestricted_HandlerNode not_for_us; |
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EventFilters ef; |
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} EventFilterPrivate_HandlerNode; |
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/** |
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* The following macros extract filter info (EventFilters) from private |
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* data at the end of a HandlerNode |
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*/ |
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#define EVENT_FILTERS(node) (&(((EventFilterPrivate_HandlerNode*)(void*)node)->ef)) |
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#define FILTER_COUNT(node) (EVENT_FILTERS(node)->filterCount) |
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#define FILTERS_ARRAY(node) (EVENT_FILTERS(node)->filters) |
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#define FILTER(node,index) ((FILTERS_ARRAY(node))[index]) |
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#define NODE_EI(node) (node->ei) |
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/***** filter set-up / destruction *****/ |
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/** |
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* Allocate a HandlerNode. |
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* We do it because eventHandler doesn't know how big to make it. |
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*/ |
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HandlerNode * |
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eventFilterRestricted_alloc(jint filterCount) |
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{ |
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/*LINTED*/ |
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size_t size = offsetof(EventFilterPrivate_HandlerNode, ef) + |
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offsetof(EventFilters, filters) + |
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(filterCount * (int)sizeof(Filter)); |
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HandlerNode *node = jvmtiAllocate((jint)size); |
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if (node != NULL) { |
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int i; |
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Filter *filter; |
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(void)memset(node, 0, size); |
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FILTER_COUNT(node) = filterCount; |
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/* Initialize all modifiers |
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*/ |
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for (i = 0, filter = FILTERS_ARRAY(node); |
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i < filterCount; |
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i++, filter++) { |
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filter->modifier = JDWP_REQUEST_NONE; |
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} |
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} |
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return node; |
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} |
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/** |
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* Free up global refs held by the filter. |
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* free things up at the JNI level if needed. |
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*/ |
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static jvmtiError |
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clearFilters(HandlerNode *node) |
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{ |
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JNIEnv *env = getEnv(); |
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jint i; |
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jvmtiError error = JVMTI_ERROR_NONE; |
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Filter *filter = FILTERS_ARRAY(node); |
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for (i = 0; i < FILTER_COUNT(node); ++i, ++filter) { |
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switch (filter->modifier) { |
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case JDWP_REQUEST_MODIFIER(ThreadOnly): |
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if ( filter->u.ThreadOnly.thread != NULL ) { |
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tossGlobalRef(env, &(filter->u.ThreadOnly.thread)); |
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} |
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break; |
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case JDWP_REQUEST_MODIFIER(LocationOnly): |
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tossGlobalRef(env, &(filter->u.LocationOnly.clazz)); |
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break; |
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case JDWP_REQUEST_MODIFIER(FieldOnly): |
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tossGlobalRef(env, &(filter->u.FieldOnly.clazz)); |
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break; |
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case JDWP_REQUEST_MODIFIER(ExceptionOnly): |
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if ( filter->u.ExceptionOnly.exception != NULL ) { |
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tossGlobalRef(env, &(filter->u.ExceptionOnly.exception)); |
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} |
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break; |
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208 |
case JDWP_REQUEST_MODIFIER(InstanceOnly): |
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if ( filter->u.InstanceOnly.instance != NULL ) { |
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tossGlobalRef(env, &(filter->u.InstanceOnly.instance)); |
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} |
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break; |
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case JDWP_REQUEST_MODIFIER(ClassOnly): |
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tossGlobalRef(env, &(filter->u.ClassOnly.clazz)); |
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break; |
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case JDWP_REQUEST_MODIFIER(ClassMatch): |
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jvmtiDeallocate(filter->u.ClassMatch.classPattern); |
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break; |
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case JDWP_REQUEST_MODIFIER(ClassExclude): |
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jvmtiDeallocate(filter->u.ClassExclude.classPattern); |
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break; |
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case JDWP_REQUEST_MODIFIER(Step): { |
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jthread thread = filter->u.Step.thread; |
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224 |
error = stepControl_endStep(thread); |
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225 |
if (error == JVMTI_ERROR_NONE) { |
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tossGlobalRef(env, &(filter->u.Step.thread)); |
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227 |
} |
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break; |
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229 |
} |
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230 |
} |
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231 |
} |
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if (error == JVMTI_ERROR_NONE) { |
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FILTER_COUNT(node) = 0; /* blast so we don't clear again */ |
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234 |
} |
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235 |
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236 |
return error; |
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237 |
} |
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238 |
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239 |
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/***** filtering *****/ |
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241 |
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242 |
/* |
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243 |
* Match a string against a wildcard |
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* string pattern. |
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*/ |
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246 |
static jboolean |
|
247 |
patternStringMatch(char *classname, const char *pattern) |
|
248 |
{ |
|
249 |
int pattLen; |
|
250 |
int compLen; |
|
251 |
char *start; |
|
252 |
int offset; |
|
253 |
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254 |
if ( pattern==NULL || classname==NULL ) { |
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255 |
return JNI_FALSE; |
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256 |
} |
|
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pattLen = (int)strlen(pattern); |
|
258 |
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259 |
if ((pattern[0] != '*') && (pattern[pattLen-1] != '*')) { |
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260 |
/* An exact match is required when there is no *: bug 4331522 */ |
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return strcmp(pattern, classname) == 0; |
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} else { |
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compLen = pattLen - 1; |
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offset = (int)strlen(classname) - compLen; |
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if (offset < 0) { |
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return JNI_FALSE; |
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267 |
} else { |
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268 |
if (pattern[0] == '*') { |
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pattern++; |
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start = classname + offset; |
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} else { |
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start = classname; |
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} |
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return strncmp(pattern, start, compLen) == 0; |
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275 |
} |
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} |
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} |
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static jboolean isVersionGte12x() { |
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jint version; |
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jvmtiError err = |
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JVMTI_FUNC_PTR(gdata->jvmti,GetVersionNumber)(gdata->jvmti, &version); |
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if (err == JVMTI_ERROR_NONE) { |
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jint major, minor; |
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major = (version & JVMTI_VERSION_MASK_MAJOR) |
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>> JVMTI_VERSION_SHIFT_MAJOR; |
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minor = (version & JVMTI_VERSION_MASK_MINOR) |
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>> JVMTI_VERSION_SHIFT_MINOR; |
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return (major > 1 || (major == 1 && minor >= 2)) ? JNI_TRUE : JNI_FALSE; |
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} else { |
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return JNI_FALSE; |
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} |
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} |
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/* Return the object instance in which the event occurred */ |
298 |
/* Return NULL if static or if an error occurs */ |
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299 |
static jobject |
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300 |
eventInstance(EventInfo *evinfo) |
|
301 |
{ |
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302 |
jobject object = NULL; |
|
303 |
jthread thread ; |
|
304 |
jmethodID method ; |
|
305 |
jint modifiers = 0; |
|
306 |
jvmtiError error; |
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307 |
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static jboolean got_version = JNI_FALSE; |
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static jboolean is_version_gte_12x = JNI_FALSE; |
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|
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if (!got_version) { |
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is_version_gte_12x = isVersionGte12x(); |
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got_version = JNI_TRUE; |
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} |
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315 |
|
2 | 316 |
switch (evinfo->ei) { |
317 |
case EI_SINGLE_STEP: |
|
318 |
case EI_BREAKPOINT: |
|
319 |
case EI_FRAME_POP: |
|
320 |
case EI_METHOD_ENTRY: |
|
321 |
case EI_METHOD_EXIT: |
|
322 |
case EI_EXCEPTION: |
|
323 |
case EI_EXCEPTION_CATCH: |
|
324 |
case EI_MONITOR_CONTENDED_ENTER: |
|
325 |
case EI_MONITOR_CONTENDED_ENTERED: |
|
326 |
case EI_MONITOR_WAIT: |
|
327 |
case EI_MONITOR_WAITED: |
|
328 |
thread = evinfo->thread; |
|
329 |
method = evinfo->method; |
|
330 |
break; |
|
331 |
case EI_FIELD_ACCESS: |
|
332 |
case EI_FIELD_MODIFICATION: |
|
333 |
object = evinfo->object; |
|
334 |
return object; |
|
335 |
default: |
|
336 |
return object; /* NULL */ |
|
337 |
} |
|
338 |
||
339 |
error = methodModifiers(method, &modifiers); |
|
340 |
||
341 |
/* fail if error or static (0x8) */ |
|
342 |
if (error == JVMTI_ERROR_NONE && thread!=NULL && (modifiers & 0x8) == 0) { |
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343 |
FrameNumber fnum = 0; |
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if (is_version_gte_12x) { |
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/* Use new 1.2.x function, GetLocalInstance */ |
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalInstance) |
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(gdata->jvmti, thread, fnum, &object); |
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} else { |
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/* get slot zero object "this" */ |
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalObject) |
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(gdata->jvmti, thread, fnum, 0, &object); |
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} |
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if (error != JVMTI_ERROR_NONE) { |
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object = NULL; |
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} |
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} |
357 |
||
358 |
return object; |
|
359 |
} |
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360 |
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361 |
/* |
|
362 |
* Determine if this event is interesting to this handler. |
|
363 |
* Do so by checking each of the handler's filters. |
|
364 |
* Return false if any of the filters fail, |
|
365 |
* true if the handler wants this event. |
|
366 |
* Anyone modifying this function should check |
|
367 |
* eventFilterRestricted_passesUnloadFilter and |
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368 |
* eventFilter_predictFiltering as well. |
|
369 |
* |
|
370 |
* If shouldDelete is returned true, a count filter has expired |
|
371 |
* and the corresponding node should be deleted. |
|
372 |
*/ |
|
373 |
jboolean |
|
374 |
eventFilterRestricted_passesFilter(JNIEnv *env, |
|
375 |
char *classname, |
|
376 |
EventInfo *evinfo, |
|
377 |
HandlerNode *node, |
|
378 |
jboolean *shouldDelete) |
|
379 |
{ |
|
380 |
jthread thread; |
|
381 |
jclass clazz; |
|
382 |
jmethodID method; |
|
383 |
Filter *filter = FILTERS_ARRAY(node); |
|
384 |
int i; |
|
385 |
||
386 |
*shouldDelete = JNI_FALSE; |
|
387 |
thread = evinfo->thread; |
|
388 |
clazz = evinfo->clazz; |
|
389 |
method = evinfo->method; |
|
390 |
||
391 |
/* |
|
392 |
* Suppress most events if they happen in debug threads |
|
393 |
*/ |
|
394 |
if ((evinfo->ei != EI_CLASS_PREPARE) && |
|
395 |
(evinfo->ei != EI_GC_FINISH) && |
|
396 |
(evinfo->ei != EI_CLASS_LOAD) && |
|
397 |
threadControl_isDebugThread(thread)) { |
|
398 |
return JNI_FALSE; |
|
399 |
} |
|
400 |
||
401 |
for (i = 0; i < FILTER_COUNT(node); ++i, ++filter) { |
|
402 |
switch (filter->modifier) { |
|
403 |
case JDWP_REQUEST_MODIFIER(ThreadOnly): |
|
404 |
if (!isSameObject(env, thread, filter->u.ThreadOnly.thread)) { |
|
405 |
return JNI_FALSE; |
|
406 |
} |
|
407 |
break; |
|
408 |
||
409 |
case JDWP_REQUEST_MODIFIER(ClassOnly): |
|
410 |
/* Class filters catch events in the specified |
|
411 |
* class and any subclass/subinterface. |
|
412 |
*/ |
|
413 |
if (!JNI_FUNC_PTR(env,IsAssignableFrom)(env, clazz, |
|
414 |
filter->u.ClassOnly.clazz)) { |
|
415 |
return JNI_FALSE; |
|
416 |
} |
|
417 |
break; |
|
418 |
||
419 |
/* This is kinda cheating assumming the event |
|
420 |
* fields will be in the same locations, but it is |
|
421 |
* true now. |
|
422 |
*/ |
|
423 |
case JDWP_REQUEST_MODIFIER(LocationOnly): |
|
424 |
if (evinfo->method != |
|
425 |
filter->u.LocationOnly.method || |
|
426 |
evinfo->location != |
|
427 |
filter->u.LocationOnly.location || |
|
428 |
!isSameObject(env, clazz, filter->u.LocationOnly.clazz)) { |
|
429 |
return JNI_FALSE; |
|
430 |
} |
|
431 |
break; |
|
432 |
||
433 |
case JDWP_REQUEST_MODIFIER(FieldOnly): |
|
434 |
/* Field watchpoints can be triggered from the |
|
435 |
* declared class or any subclass/subinterface. |
|
436 |
*/ |
|
437 |
if ((evinfo->u.field_access.field != |
|
438 |
filter->u.FieldOnly.field) || |
|
439 |
!isSameObject(env, evinfo->u.field_access.field_clazz, |
|
440 |
filter->u.FieldOnly.clazz)) { |
|
441 |
return JNI_FALSE; |
|
442 |
} |
|
443 |
break; |
|
444 |
||
445 |
case JDWP_REQUEST_MODIFIER(ExceptionOnly): |
|
446 |
/* do we want caught/uncaught exceptions */ |
|
447 |
if (!((evinfo->u.exception.catch_clazz == NULL)? |
|
448 |
filter->u.ExceptionOnly.uncaught : |
|
449 |
filter->u.ExceptionOnly.caught)) { |
|
450 |
return JNI_FALSE; |
|
451 |
} |
|
452 |
||
453 |
/* do we care about exception class */ |
|
454 |
if (filter->u.ExceptionOnly.exception != NULL) { |
|
455 |
jclass exception = evinfo->object; |
|
456 |
||
457 |
/* do we want this exception class */ |
|
458 |
if (!JNI_FUNC_PTR(env,IsInstanceOf)(env, exception, |
|
459 |
filter->u.ExceptionOnly.exception)) { |
|
460 |
return JNI_FALSE; |
|
461 |
} |
|
462 |
} |
|
463 |
break; |
|
464 |
||
465 |
case JDWP_REQUEST_MODIFIER(InstanceOnly): { |
|
466 |
jobject eventInst = eventInstance(evinfo); |
|
467 |
jobject filterInst = filter->u.InstanceOnly.instance; |
|
468 |
/* if no error and doesn't match, don't pass |
|
469 |
* filter |
|
470 |
*/ |
|
471 |
if (eventInst != NULL && |
|
472 |
!isSameObject(env, eventInst, filterInst)) { |
|
473 |
return JNI_FALSE; |
|
474 |
} |
|
475 |
break; |
|
476 |
} |
|
477 |
case JDWP_REQUEST_MODIFIER(Count): { |
|
478 |
JDI_ASSERT(filter->u.Count.count > 0); |
|
479 |
if (--filter->u.Count.count > 0) { |
|
480 |
return JNI_FALSE; |
|
481 |
} |
|
482 |
*shouldDelete = JNI_TRUE; |
|
483 |
break; |
|
484 |
} |
|
485 |
||
486 |
case JDWP_REQUEST_MODIFIER(Conditional): |
|
487 |
/*** |
|
488 |
if (... filter->u.Conditional.exprID ...) { |
|
489 |
return JNI_FALSE; |
|
490 |
} |
|
491 |
***/ |
|
492 |
break; |
|
493 |
||
494 |
case JDWP_REQUEST_MODIFIER(ClassMatch): { |
|
495 |
if (!patternStringMatch(classname, |
|
496 |
filter->u.ClassMatch.classPattern)) { |
|
497 |
return JNI_FALSE; |
|
498 |
} |
|
499 |
break; |
|
500 |
} |
|
501 |
||
502 |
case JDWP_REQUEST_MODIFIER(ClassExclude): { |
|
503 |
if (patternStringMatch(classname, |
|
504 |
filter->u.ClassExclude.classPattern)) { |
|
505 |
return JNI_FALSE; |
|
506 |
} |
|
507 |
break; |
|
508 |
} |
|
509 |
||
510 |
case JDWP_REQUEST_MODIFIER(Step): |
|
511 |
if (!isSameObject(env, thread, filter->u.Step.thread)) { |
|
512 |
return JNI_FALSE; |
|
513 |
} |
|
514 |
if (!stepControl_handleStep(env, thread, clazz, method)) { |
|
515 |
return JNI_FALSE; |
|
516 |
} |
|
517 |
break; |
|
518 |
||
519 |
case JDWP_REQUEST_MODIFIER(SourceNameMatch): { |
|
520 |
char* desiredNamePattern = filter->u.SourceNameOnly.sourceNamePattern; |
|
521 |
if (!searchAllSourceNames(env, clazz, |
|
522 |
desiredNamePattern) == 1) { |
|
523 |
/* The name isn't in the SDE; try the sourceName in the ref |
|
524 |
* type |
|
525 |
*/ |
|
526 |
char *sourceName = 0; |
|
527 |
jvmtiError error = JVMTI_FUNC_PTR(gdata->jvmti,GetSourceFileName) |
|
528 |
(gdata->jvmti, clazz, &sourceName); |
|
828
ad3f54bd6ae8
2157677: ClassPrepareRequest.addSourceNameFilter() does not behave as documented
jjh
parents:
2
diff
changeset
|
529 |
if (error == JVMTI_ERROR_NONE && |
ad3f54bd6ae8
2157677: ClassPrepareRequest.addSourceNameFilter() does not behave as documented
jjh
parents:
2
diff
changeset
|
530 |
sourceName != 0 && |
ad3f54bd6ae8
2157677: ClassPrepareRequest.addSourceNameFilter() does not behave as documented
jjh
parents:
2
diff
changeset
|
531 |
patternStringMatch(sourceName, desiredNamePattern)) { |
ad3f54bd6ae8
2157677: ClassPrepareRequest.addSourceNameFilter() does not behave as documented
jjh
parents:
2
diff
changeset
|
532 |
// got a hit - report the event |
ad3f54bd6ae8
2157677: ClassPrepareRequest.addSourceNameFilter() does not behave as documented
jjh
parents:
2
diff
changeset
|
533 |
jvmtiDeallocate(sourceName); |
ad3f54bd6ae8
2157677: ClassPrepareRequest.addSourceNameFilter() does not behave as documented
jjh
parents:
2
diff
changeset
|
534 |
break; |
2 | 535 |
} |
828
ad3f54bd6ae8
2157677: ClassPrepareRequest.addSourceNameFilter() does not behave as documented
jjh
parents:
2
diff
changeset
|
536 |
// We have no match, we have no source file name, |
ad3f54bd6ae8
2157677: ClassPrepareRequest.addSourceNameFilter() does not behave as documented
jjh
parents:
2
diff
changeset
|
537 |
// or we got a JVM TI error. Don't report the event. |
2 | 538 |
jvmtiDeallocate(sourceName); |
828
ad3f54bd6ae8
2157677: ClassPrepareRequest.addSourceNameFilter() does not behave as documented
jjh
parents:
2
diff
changeset
|
539 |
return JNI_FALSE; |
2 | 540 |
} |
541 |
break; |
|
542 |
} |
|
543 |
||
544 |
default: |
|
545 |
EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"Invalid filter modifier"); |
|
546 |
return JNI_FALSE; |
|
547 |
} |
|
548 |
} |
|
549 |
return JNI_TRUE; |
|
550 |
} |
|
551 |
||
552 |
/* Determine if this event is interesting to this handler. Do so |
|
553 |
* by checking each of the handler's filters. Return false if any |
|
554 |
* of the filters fail, true if the handler wants this event. |
|
555 |
* Special version of filter for unloads since they don't have an |
|
556 |
* event structure or a jclass. |
|
557 |
* |
|
558 |
* If shouldDelete is returned true, a count filter has expired |
|
559 |
* and the corresponding node should be deleted. |
|
560 |
*/ |
|
561 |
jboolean |
|
562 |
eventFilterRestricted_passesUnloadFilter(JNIEnv *env, |
|
563 |
char *classname, |
|
564 |
HandlerNode *node, |
|
565 |
jboolean *shouldDelete) |
|
566 |
{ |
|
567 |
Filter *filter = FILTERS_ARRAY(node); |
|
568 |
int i; |
|
569 |
||
570 |
*shouldDelete = JNI_FALSE; |
|
571 |
for (i = 0; i < FILTER_COUNT(node); ++i, ++filter) { |
|
572 |
switch (filter->modifier) { |
|
573 |
||
574 |
case JDWP_REQUEST_MODIFIER(Count): { |
|
575 |
JDI_ASSERT(filter->u.Count.count > 0); |
|
576 |
if (--filter->u.Count.count > 0) { |
|
577 |
return JNI_FALSE; |
|
578 |
} |
|
579 |
*shouldDelete = JNI_TRUE; |
|
580 |
break; |
|
581 |
} |
|
582 |
||
583 |
case JDWP_REQUEST_MODIFIER(ClassMatch): { |
|
584 |
if (!patternStringMatch(classname, |
|
585 |
filter->u.ClassMatch.classPattern)) { |
|
586 |
return JNI_FALSE; |
|
587 |
} |
|
588 |
break; |
|
589 |
} |
|
590 |
||
591 |
case JDWP_REQUEST_MODIFIER(ClassExclude): { |
|
592 |
if (patternStringMatch(classname, |
|
593 |
filter->u.ClassExclude.classPattern)) { |
|
594 |
return JNI_FALSE; |
|
595 |
} |
|
596 |
break; |
|
597 |
} |
|
598 |
||
599 |
default: |
|
600 |
EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"Invalid filter modifier"); |
|
601 |
return JNI_FALSE; |
|
602 |
} |
|
603 |
} |
|
604 |
return JNI_TRUE; |
|
605 |
} |
|
606 |
||
607 |
/** |
|
608 |
* This function returns true only if it is certain that |
|
609 |
* all events for the given node in the given stack frame will |
|
610 |
* be filtered. It is used to optimize stepping. (If this |
|
611 |
* function returns true the stepping algorithm does not |
|
612 |
* have to step through every instruction in this stack frame; |
|
613 |
* instead, it can use more efficient method entry/exit |
|
614 |
* events. |
|
615 |
*/ |
|
616 |
jboolean |
|
617 |
eventFilter_predictFiltering(HandlerNode *node, jclass clazz, char *classname) |
|
618 |
{ |
|
619 |
JNIEnv *env; |
|
620 |
jboolean willBeFiltered; |
|
621 |
Filter *filter; |
|
622 |
jboolean done; |
|
623 |
int count; |
|
624 |
int i; |
|
625 |
||
626 |
willBeFiltered = JNI_FALSE; |
|
627 |
env = NULL; |
|
628 |
filter = FILTERS_ARRAY(node); |
|
629 |
count = FILTER_COUNT(node); |
|
630 |
done = JNI_FALSE; |
|
631 |
||
632 |
for (i = 0; (i < count) && (!done); ++i, ++filter) { |
|
633 |
switch (filter->modifier) { |
|
634 |
case JDWP_REQUEST_MODIFIER(ClassOnly): |
|
635 |
if ( env==NULL ) { |
|
636 |
env = getEnv(); |
|
637 |
} |
|
638 |
if (!JNI_FUNC_PTR(env,IsAssignableFrom)(env, clazz, |
|
639 |
filter->u.ClassOnly.clazz)) { |
|
640 |
willBeFiltered = JNI_TRUE; |
|
641 |
done = JNI_TRUE; |
|
642 |
} |
|
643 |
break; |
|
644 |
||
645 |
case JDWP_REQUEST_MODIFIER(Count): { |
|
646 |
/* |
|
21278 | 647 |
* If preceding filters have determined that events will |
2 | 648 |
* be filtered out, that is fine and we won't get here. |
649 |
* However, the count must be decremented - even if |
|
650 |
* subsequent filters will filter these events. We |
|
651 |
* thus must end now unable to predict |
|
652 |
*/ |
|
653 |
done = JNI_TRUE; |
|
654 |
break; |
|
655 |
} |
|
656 |
||
657 |
case JDWP_REQUEST_MODIFIER(ClassMatch): { |
|
658 |
if (!patternStringMatch(classname, |
|
659 |
filter->u.ClassMatch.classPattern)) { |
|
660 |
willBeFiltered = JNI_TRUE; |
|
661 |
done = JNI_TRUE; |
|
662 |
} |
|
663 |
break; |
|
664 |
} |
|
665 |
||
666 |
case JDWP_REQUEST_MODIFIER(ClassExclude): { |
|
667 |
if (patternStringMatch(classname, |
|
668 |
filter->u.ClassExclude.classPattern)) { |
|
669 |
willBeFiltered = JNI_TRUE; |
|
670 |
done = JNI_TRUE; |
|
671 |
} |
|
672 |
break; |
|
673 |
} |
|
674 |
} |
|
675 |
} |
|
676 |
||
677 |
return willBeFiltered; |
|
678 |
} |
|
679 |
||
680 |
/** |
|
681 |
* Determine if the given breakpoint node is in the specified class. |
|
682 |
*/ |
|
683 |
jboolean |
|
684 |
eventFilterRestricted_isBreakpointInClass(JNIEnv *env, jclass clazz, |
|
685 |
HandlerNode *node) |
|
686 |
{ |
|
687 |
Filter *filter = FILTERS_ARRAY(node); |
|
688 |
int i; |
|
689 |
||
690 |
for (i = 0; i < FILTER_COUNT(node); ++i, ++filter) { |
|
691 |
switch (filter->modifier) { |
|
692 |
case JDWP_REQUEST_MODIFIER(LocationOnly): |
|
693 |
return isSameObject(env, clazz, filter->u.LocationOnly.clazz); |
|
694 |
} |
|
695 |
} |
|
696 |
return JNI_TRUE; /* should never come here */ |
|
697 |
} |
|
698 |
||
699 |
/***** filter set-up *****/ |
|
700 |
||
701 |
jvmtiError |
|
702 |
eventFilter_setConditionalFilter(HandlerNode *node, jint index, |
|
703 |
jint exprID) |
|
704 |
{ |
|
705 |
ConditionalFilter *filter = &FILTER(node, index).u.Conditional; |
|
706 |
if (index >= FILTER_COUNT(node)) { |
|
707 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
708 |
} |
|
709 |
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(Conditional); |
|
710 |
filter->exprID = exprID; |
|
711 |
return JVMTI_ERROR_NONE; |
|
712 |
} |
|
713 |
||
714 |
jvmtiError |
|
715 |
eventFilter_setCountFilter(HandlerNode *node, jint index, |
|
716 |
jint count) |
|
717 |
{ |
|
718 |
CountFilter *filter = &FILTER(node, index).u.Count; |
|
719 |
if (index >= FILTER_COUNT(node)) { |
|
720 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
721 |
} |
|
722 |
if (count <= 0) { |
|
723 |
return JDWP_ERROR(INVALID_COUNT); |
|
724 |
} else { |
|
725 |
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(Count); |
|
726 |
filter->count = count; |
|
727 |
return JVMTI_ERROR_NONE; |
|
728 |
} |
|
729 |
} |
|
730 |
||
731 |
jvmtiError |
|
732 |
eventFilter_setThreadOnlyFilter(HandlerNode *node, jint index, |
|
733 |
jthread thread) |
|
734 |
{ |
|
735 |
JNIEnv *env = getEnv(); |
|
736 |
ThreadFilter *filter = &FILTER(node, index).u.ThreadOnly; |
|
737 |
if (index >= FILTER_COUNT(node)) { |
|
738 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
739 |
} |
|
740 |
if (NODE_EI(node) == EI_GC_FINISH) { |
|
741 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
742 |
} |
|
743 |
||
744 |
/* Create a thread ref that will live beyond */ |
|
745 |
/* the end of this call */ |
|
746 |
saveGlobalRef(env, thread, &(filter->thread)); |
|
747 |
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(ThreadOnly); |
|
748 |
return JVMTI_ERROR_NONE; |
|
749 |
} |
|
750 |
||
751 |
jvmtiError |
|
752 |
eventFilter_setLocationOnlyFilter(HandlerNode *node, jint index, |
|
753 |
jclass clazz, jmethodID method, |
|
754 |
jlocation location) |
|
755 |
{ |
|
756 |
JNIEnv *env = getEnv(); |
|
757 |
LocationFilter *filter = &FILTER(node, index).u.LocationOnly; |
|
758 |
if (index >= FILTER_COUNT(node)) { |
|
759 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
760 |
} |
|
761 |
if ((NODE_EI(node) != EI_BREAKPOINT) && |
|
762 |
(NODE_EI(node) != EI_FIELD_ACCESS) && |
|
763 |
(NODE_EI(node) != EI_FIELD_MODIFICATION) && |
|
764 |
(NODE_EI(node) != EI_SINGLE_STEP) && |
|
765 |
(NODE_EI(node) != EI_EXCEPTION)) { |
|
766 |
||
767 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
768 |
} |
|
769 |
||
770 |
/* Create a class ref that will live beyond */ |
|
771 |
/* the end of this call */ |
|
772 |
saveGlobalRef(env, clazz, &(filter->clazz)); |
|
773 |
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(LocationOnly); |
|
774 |
filter->method = method; |
|
775 |
filter->location = location; |
|
776 |
return JVMTI_ERROR_NONE; |
|
777 |
} |
|
778 |
||
779 |
jvmtiError |
|
780 |
eventFilter_setFieldOnlyFilter(HandlerNode *node, jint index, |
|
781 |
jclass clazz, jfieldID field) |
|
782 |
{ |
|
783 |
JNIEnv *env = getEnv(); |
|
784 |
FieldFilter *filter = &FILTER(node, index).u.FieldOnly; |
|
785 |
if (index >= FILTER_COUNT(node)) { |
|
786 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
787 |
} |
|
788 |
if ((NODE_EI(node) != EI_FIELD_ACCESS) && |
|
789 |
(NODE_EI(node) != EI_FIELD_MODIFICATION)) { |
|
790 |
||
791 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
792 |
} |
|
793 |
||
794 |
/* Create a class ref that will live beyond */ |
|
795 |
/* the end of this call */ |
|
796 |
saveGlobalRef(env, clazz, &(filter->clazz)); |
|
797 |
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(FieldOnly); |
|
798 |
filter->field = field; |
|
799 |
return JVMTI_ERROR_NONE; |
|
800 |
} |
|
801 |
||
802 |
jvmtiError |
|
803 |
eventFilter_setClassOnlyFilter(HandlerNode *node, jint index, |
|
804 |
jclass clazz) |
|
805 |
{ |
|
806 |
JNIEnv *env = getEnv(); |
|
807 |
ClassFilter *filter = &FILTER(node, index).u.ClassOnly; |
|
808 |
if (index >= FILTER_COUNT(node)) { |
|
809 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
810 |
} |
|
811 |
if ( |
|
812 |
(NODE_EI(node) == EI_GC_FINISH) || |
|
813 |
(NODE_EI(node) == EI_THREAD_START) || |
|
814 |
(NODE_EI(node) == EI_THREAD_END)) { |
|
815 |
||
816 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
817 |
} |
|
818 |
||
819 |
/* Create a class ref that will live beyond */ |
|
820 |
/* the end of this call */ |
|
821 |
saveGlobalRef(env, clazz, &(filter->clazz)); |
|
822 |
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(ClassOnly); |
|
823 |
return JVMTI_ERROR_NONE; |
|
824 |
} |
|
825 |
||
826 |
jvmtiError |
|
827 |
eventFilter_setExceptionOnlyFilter(HandlerNode *node, jint index, |
|
828 |
jclass exceptionClass, |
|
829 |
jboolean caught, |
|
830 |
jboolean uncaught) |
|
831 |
{ |
|
832 |
JNIEnv *env = getEnv(); |
|
833 |
ExceptionFilter *filter = &FILTER(node, index).u.ExceptionOnly; |
|
834 |
if (index >= FILTER_COUNT(node)) { |
|
835 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
836 |
} |
|
837 |
if (NODE_EI(node) != EI_EXCEPTION) { |
|
838 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
839 |
} |
|
840 |
||
841 |
filter->exception = NULL; |
|
842 |
if (exceptionClass != NULL) { |
|
843 |
/* Create a class ref that will live beyond */ |
|
844 |
/* the end of this call */ |
|
845 |
saveGlobalRef(env, exceptionClass, &(filter->exception)); |
|
846 |
} |
|
847 |
FILTER(node, index).modifier = |
|
848 |
JDWP_REQUEST_MODIFIER(ExceptionOnly); |
|
849 |
filter->caught = caught; |
|
850 |
filter->uncaught = uncaught; |
|
851 |
return JVMTI_ERROR_NONE; |
|
852 |
} |
|
853 |
||
854 |
jvmtiError |
|
855 |
eventFilter_setInstanceOnlyFilter(HandlerNode *node, jint index, |
|
856 |
jobject instance) |
|
857 |
{ |
|
858 |
JNIEnv *env = getEnv(); |
|
859 |
InstanceFilter *filter = &FILTER(node, index).u.InstanceOnly; |
|
860 |
if (index >= FILTER_COUNT(node)) { |
|
861 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
862 |
} |
|
863 |
||
864 |
filter->instance = NULL; |
|
865 |
if (instance != NULL) { |
|
866 |
/* Create an object ref that will live beyond |
|
867 |
* the end of this call |
|
868 |
*/ |
|
869 |
saveGlobalRef(env, instance, &(filter->instance)); |
|
870 |
} |
|
871 |
FILTER(node, index).modifier = |
|
872 |
JDWP_REQUEST_MODIFIER(InstanceOnly); |
|
873 |
return JVMTI_ERROR_NONE; |
|
874 |
} |
|
875 |
||
876 |
jvmtiError |
|
877 |
eventFilter_setClassMatchFilter(HandlerNode *node, jint index, |
|
878 |
char *classPattern) |
|
879 |
{ |
|
880 |
MatchFilter *filter = &FILTER(node, index).u.ClassMatch; |
|
881 |
if (index >= FILTER_COUNT(node)) { |
|
882 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
883 |
} |
|
884 |
if ( |
|
885 |
(NODE_EI(node) == EI_THREAD_START) || |
|
886 |
(NODE_EI(node) == EI_THREAD_END)) { |
|
887 |
||
888 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
889 |
} |
|
890 |
||
891 |
FILTER(node, index).modifier = |
|
892 |
JDWP_REQUEST_MODIFIER(ClassMatch); |
|
893 |
filter->classPattern = classPattern; |
|
894 |
return JVMTI_ERROR_NONE; |
|
895 |
} |
|
896 |
||
897 |
jvmtiError |
|
898 |
eventFilter_setClassExcludeFilter(HandlerNode *node, jint index, |
|
899 |
char *classPattern) |
|
900 |
{ |
|
901 |
MatchFilter *filter = &FILTER(node, index).u.ClassExclude; |
|
902 |
if (index >= FILTER_COUNT(node)) { |
|
903 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
904 |
} |
|
905 |
if ( |
|
906 |
(NODE_EI(node) == EI_THREAD_START) || |
|
907 |
(NODE_EI(node) == EI_THREAD_END)) { |
|
908 |
||
909 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
910 |
} |
|
911 |
||
912 |
FILTER(node, index).modifier = |
|
913 |
JDWP_REQUEST_MODIFIER(ClassExclude); |
|
914 |
filter->classPattern = classPattern; |
|
915 |
return JVMTI_ERROR_NONE; |
|
916 |
} |
|
917 |
||
918 |
jvmtiError |
|
919 |
eventFilter_setStepFilter(HandlerNode *node, jint index, |
|
920 |
jthread thread, jint size, jint depth) |
|
921 |
{ |
|
922 |
jvmtiError error; |
|
923 |
JNIEnv *env = getEnv(); |
|
924 |
StepFilter *filter = &FILTER(node, index).u.Step; |
|
925 |
if (index >= FILTER_COUNT(node)) { |
|
926 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
927 |
} |
|
928 |
if (NODE_EI(node) != EI_SINGLE_STEP) { |
|
929 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
930 |
} |
|
931 |
||
932 |
/* Create a thread ref that will live beyond */ |
|
933 |
/* the end of this call */ |
|
934 |
saveGlobalRef(env, thread, &(filter->thread)); |
|
935 |
error = stepControl_beginStep(env, filter->thread, size, depth, node); |
|
936 |
if (error != JVMTI_ERROR_NONE) { |
|
937 |
tossGlobalRef(env, &(filter->thread)); |
|
938 |
return error; |
|
939 |
} |
|
940 |
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(Step); |
|
941 |
filter->depth = depth; |
|
942 |
filter->size = size; |
|
943 |
return JVMTI_ERROR_NONE; |
|
944 |
} |
|
945 |
||
946 |
||
947 |
jvmtiError |
|
948 |
eventFilter_setSourceNameMatchFilter(HandlerNode *node, |
|
949 |
jint index, |
|
950 |
char *sourceNamePattern) { |
|
951 |
SourceNameFilter *filter = &FILTER(node, index).u.SourceNameOnly; |
|
952 |
if (index >= FILTER_COUNT(node)) { |
|
953 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
954 |
} |
|
955 |
if (NODE_EI(node) != EI_CLASS_PREPARE) { |
|
956 |
return AGENT_ERROR_ILLEGAL_ARGUMENT; |
|
957 |
} |
|
958 |
||
959 |
FILTER(node, index).modifier = |
|
960 |
JDWP_REQUEST_MODIFIER(SourceNameMatch); |
|
961 |
filter->sourceNamePattern = sourceNamePattern; |
|
962 |
return JVMTI_ERROR_NONE; |
|
963 |
||
964 |
} |
|
965 |
||
966 |
/***** JVMTI event enabling / disabling *****/ |
|
967 |
||
968 |
/** |
|
969 |
* Return the Filter that is of the specified type (modifier). |
|
970 |
* Return NULL if not found. |
|
971 |
*/ |
|
972 |
static Filter * |
|
973 |
findFilter(HandlerNode *node, jint modifier) |
|
974 |
{ |
|
975 |
int i; |
|
976 |
Filter *filter; |
|
977 |
for (i = 0, filter = FILTERS_ARRAY(node); |
|
978 |
i <FILTER_COUNT(node); |
|
979 |
i++, filter++) { |
|
980 |
if (filter->modifier == modifier) { |
|
981 |
return filter; |
|
982 |
} |
|
983 |
} |
|
984 |
return NULL; |
|
985 |
} |
|
986 |
||
987 |
/** |
|
988 |
* Determine if the specified breakpoint node is in the |
|
989 |
* same location as the LocationFilter passed in arg. |
|
990 |
* |
|
991 |
* This is a match function called by a |
|
992 |
* eventHandlerRestricted_iterator invokation. |
|
993 |
*/ |
|
994 |
static jboolean |
|
995 |
matchBreakpoint(JNIEnv *env, HandlerNode *node, void *arg) |
|
996 |
{ |
|
997 |
LocationFilter *goal = (LocationFilter *)arg; |
|
998 |
Filter *filter = FILTERS_ARRAY(node); |
|
999 |
int i; |
|
1000 |
||
1001 |
for (i = 0; i < FILTER_COUNT(node); ++i, ++filter) { |
|
1002 |
switch (filter->modifier) { |
|
1003 |
case JDWP_REQUEST_MODIFIER(LocationOnly): { |
|
1004 |
LocationFilter *trial = &(filter->u.LocationOnly); |
|
1005 |
if (trial->method == goal->method && |
|
1006 |
trial->location == goal->location && |
|
1007 |
isSameObject(env, trial->clazz, goal->clazz)) { |
|
1008 |
return JNI_TRUE; |
|
1009 |
} |
|
1010 |
} |
|
1011 |
} |
|
1012 |
} |
|
1013 |
return JNI_FALSE; |
|
1014 |
} |
|
1015 |
||
1016 |
/** |
|
1017 |
* Set a breakpoint if this is the first one at this location. |
|
1018 |
*/ |
|
1019 |
static jvmtiError |
|
1020 |
setBreakpoint(HandlerNode *node) |
|
1021 |
{ |
|
1022 |
jvmtiError error = JVMTI_ERROR_NONE; |
|
1023 |
Filter *filter; |
|
1024 |
||
1025 |
filter = findFilter(node, JDWP_REQUEST_MODIFIER(LocationOnly)); |
|
1026 |
if (filter == NULL) { |
|
1027 |
/* bp event with no location filter */ |
|
1028 |
error = AGENT_ERROR_INTERNAL; |
|
1029 |
} else { |
|
1030 |
LocationFilter *lf = &(filter->u.LocationOnly); |
|
1031 |
||
1032 |
/* if this is the first handler for this |
|
1033 |
* location, set bp at JVMTI level |
|
1034 |
*/ |
|
1035 |
if (!eventHandlerRestricted_iterator( |
|
1036 |
EI_BREAKPOINT, matchBreakpoint, lf)) { |
|
1037 |
LOG_LOC(("SetBreakpoint at location: method=%p,location=%d", |
|
1038 |
lf->method, (int)lf->location)); |
|
1039 |
error = JVMTI_FUNC_PTR(gdata->jvmti,SetBreakpoint) |
|
1040 |
(gdata->jvmti, lf->method, lf->location); |
|
1041 |
} |
|
1042 |
} |
|
1043 |
return error; |
|
1044 |
} |
|
1045 |
||
1046 |
/** |
|
1047 |
* Clear a breakpoint if this is the last one at this location. |
|
1048 |
*/ |
|
1049 |
static jvmtiError |
|
1050 |
clearBreakpoint(HandlerNode *node) |
|
1051 |
{ |
|
1052 |
jvmtiError error = JVMTI_ERROR_NONE; |
|
1053 |
Filter *filter; |
|
1054 |
||
1055 |
filter = findFilter(node, JDWP_REQUEST_MODIFIER(LocationOnly)); |
|
1056 |
if (filter == NULL) { |
|
1057 |
/* bp event with no location filter */ |
|
1058 |
error = AGENT_ERROR_INTERNAL; |
|
1059 |
} else { |
|
1060 |
LocationFilter *lf = &(filter->u.LocationOnly); |
|
1061 |
||
1062 |
/* if this is the last handler for this |
|
1063 |
* location, clear bp at JVMTI level |
|
1064 |
*/ |
|
1065 |
if (!eventHandlerRestricted_iterator( |
|
1066 |
EI_BREAKPOINT, matchBreakpoint, lf)) { |
|
1067 |
LOG_LOC(("ClearBreakpoint at location: method=%p,location=%d", |
|
1068 |
lf->method, (int)lf->location)); |
|
1069 |
error = JVMTI_FUNC_PTR(gdata->jvmti,ClearBreakpoint) |
|
1070 |
(gdata->jvmti, lf->method, lf->location); |
|
1071 |
} |
|
1072 |
} |
|
1073 |
return error; |
|
1074 |
} |
|
1075 |
||
1076 |
/** |
|
1077 |
* Return true if a breakpoint is set at the specified location. |
|
1078 |
*/ |
|
1079 |
jboolean |
|
1080 |
isBreakpointSet(jclass clazz, jmethodID method, jlocation location) |
|
1081 |
{ |
|
1082 |
LocationFilter lf; |
|
1083 |
||
1084 |
lf.clazz = clazz; |
|
1085 |
lf.method = method; |
|
1086 |
lf.location = location; |
|
1087 |
||
1088 |
return eventHandlerRestricted_iterator(EI_BREAKPOINT, |
|
1089 |
matchBreakpoint, &lf); |
|
1090 |
} |
|
1091 |
||
1092 |
/** |
|
1093 |
* Determine if the specified watchpoint node has the |
|
1094 |
* same field as the FieldFilter passed in arg. |
|
1095 |
* |
|
1096 |
* This is a match function called by a |
|
1097 |
* eventHandlerRestricted_iterator invokation. |
|
1098 |
*/ |
|
1099 |
static jboolean |
|
1100 |
matchWatchpoint(JNIEnv *env, HandlerNode *node, void *arg) |
|
1101 |
{ |
|
1102 |
FieldFilter *goal = (FieldFilter *)arg; |
|
1103 |
Filter *filter = FILTERS_ARRAY(node); |
|
1104 |
int i; |
|
1105 |
||
1106 |
for (i = 0; i < FILTER_COUNT(node); ++i, ++filter) { |
|
1107 |
switch (filter->modifier) { |
|
1108 |
case JDWP_REQUEST_MODIFIER(FieldOnly): { |
|
1109 |
FieldFilter *trial = &(filter->u.FieldOnly); |
|
1110 |
if (trial->field == goal->field && |
|
1111 |
isSameObject(env, trial->clazz, goal->clazz)) { |
|
1112 |
return JNI_TRUE; |
|
1113 |
} |
|
1114 |
} |
|
1115 |
} |
|
1116 |
} |
|
1117 |
return JNI_FALSE; |
|
1118 |
} |
|
1119 |
||
1120 |
/** |
|
1121 |
* Set a watchpoint if this is the first one on this field. |
|
1122 |
*/ |
|
1123 |
static jvmtiError |
|
1124 |
setWatchpoint(HandlerNode *node) |
|
1125 |
{ |
|
1126 |
jvmtiError error = JVMTI_ERROR_NONE; |
|
1127 |
Filter *filter; |
|
1128 |
||
1129 |
filter = findFilter(node, JDWP_REQUEST_MODIFIER(FieldOnly)); |
|
1130 |
if (filter == NULL) { |
|
1131 |
/* event with no field filter */ |
|
1132 |
error = AGENT_ERROR_INTERNAL; |
|
1133 |
} else { |
|
1134 |
FieldFilter *ff = &(filter->u.FieldOnly); |
|
1135 |
||
1136 |
/* if this is the first handler for this |
|
1137 |
* field, set wp at JVMTI level |
|
1138 |
*/ |
|
1139 |
if (!eventHandlerRestricted_iterator( |
|
1140 |
NODE_EI(node), matchWatchpoint, ff)) { |
|
1141 |
error = (NODE_EI(node) == EI_FIELD_ACCESS) ? |
|
1142 |
JVMTI_FUNC_PTR(gdata->jvmti,SetFieldAccessWatch) |
|
1143 |
(gdata->jvmti, ff->clazz, ff->field) : |
|
1144 |
JVMTI_FUNC_PTR(gdata->jvmti,SetFieldModificationWatch) |
|
1145 |
(gdata->jvmti, ff->clazz, ff->field); |
|
1146 |
} |
|
1147 |
} |
|
1148 |
return error; |
|
1149 |
} |
|
1150 |
||
1151 |
/** |
|
1152 |
* Clear a watchpoint if this is the last one on this field. |
|
1153 |
*/ |
|
1154 |
static jvmtiError |
|
1155 |
clearWatchpoint(HandlerNode *node) |
|
1156 |
{ |
|
1157 |
jvmtiError error = JVMTI_ERROR_NONE; |
|
1158 |
Filter *filter; |
|
1159 |
||
1160 |
filter = findFilter(node, JDWP_REQUEST_MODIFIER(FieldOnly)); |
|
1161 |
if (filter == NULL) { |
|
1162 |
/* event with no field filter */ |
|
1163 |
error = AGENT_ERROR_INTERNAL; |
|
1164 |
} else { |
|
1165 |
FieldFilter *ff = &(filter->u.FieldOnly); |
|
1166 |
||
1167 |
/* if this is the last handler for this |
|
1168 |
* field, clear wp at JVMTI level |
|
1169 |
*/ |
|
1170 |
if (!eventHandlerRestricted_iterator( |
|
1171 |
NODE_EI(node), matchWatchpoint, ff)) { |
|
1172 |
error = (NODE_EI(node) == EI_FIELD_ACCESS) ? |
|
1173 |
JVMTI_FUNC_PTR(gdata->jvmti,ClearFieldAccessWatch) |
|
1174 |
(gdata->jvmti, ff->clazz, ff->field) : |
|
1175 |
JVMTI_FUNC_PTR(gdata->jvmti,ClearFieldModificationWatch) |
|
1176 |
(gdata->jvmti, ff->clazz, ff->field); |
|
1177 |
} |
|
1178 |
} |
|
1179 |
return error; |
|
1180 |
} |
|
1181 |
||
1182 |
/** |
|
1183 |
* Determine the thread this node is filtered on. |
|
1184 |
* NULL if not thread filtered. |
|
1185 |
*/ |
|
1186 |
static jthread |
|
1187 |
requestThread(HandlerNode *node) |
|
1188 |
{ |
|
1189 |
int i; |
|
1190 |
Filter *filter = FILTERS_ARRAY(node); |
|
1191 |
||
1192 |
for (i = 0; i < FILTER_COUNT(node); ++i, ++filter) { |
|
1193 |
switch (filter->modifier) { |
|
1194 |
case JDWP_REQUEST_MODIFIER(ThreadOnly): |
|
1195 |
return filter->u.ThreadOnly.thread; |
|
1196 |
} |
|
1197 |
} |
|
1198 |
||
1199 |
return NULL; |
|
1200 |
} |
|
1201 |
||
1202 |
/** |
|
1203 |
* Determine if the specified node has a |
|
1204 |
* thread filter with the thread passed in arg. |
|
1205 |
* |
|
1206 |
* This is a match function called by a |
|
1207 |
* eventHandlerRestricted_iterator invokation. |
|
1208 |
*/ |
|
1209 |
static jboolean |
|
1210 |
matchThread(JNIEnv *env, HandlerNode *node, void *arg) |
|
1211 |
{ |
|
1212 |
jthread goalThread = (jthread)arg; |
|
1213 |
jthread reqThread = requestThread(node); |
|
1214 |
||
1215 |
/* If the event's thread and the passed thread are the same |
|
1216 |
* (or both are NULL), we have a match. |
|
1217 |
*/ |
|
1218 |
return isSameObject(env, reqThread, goalThread); |
|
1219 |
} |
|
1220 |
||
1221 |
/** |
|
1222 |
* Do any enabling of events (including setting breakpoints etc) |
|
1223 |
* needed to get the events requested by this handler node. |
|
1224 |
*/ |
|
1225 |
static jvmtiError |
|
1226 |
enableEvents(HandlerNode *node) |
|
1227 |
{ |
|
1228 |
jvmtiError error = JVMTI_ERROR_NONE; |
|
1229 |
||
1230 |
switch (NODE_EI(node)) { |
|
1231 |
/* The stepping code directly enables/disables stepping as |
|
1232 |
* necessary |
|
1233 |
*/ |
|
1234 |
case EI_SINGLE_STEP: |
|
1235 |
/* Internal thread event handlers are always present |
|
1236 |
* (hardwired in the event hook), so we don't change the |
|
1237 |
* notification mode here. |
|
1238 |
*/ |
|
1239 |
case EI_THREAD_START: |
|
1240 |
case EI_THREAD_END: |
|
1241 |
case EI_VM_INIT: |
|
1242 |
case EI_VM_DEATH: |
|
1243 |
case EI_CLASS_PREPARE: |
|
1244 |
case EI_GC_FINISH: |
|
1245 |
return error; |
|
1246 |
||
1247 |
case EI_FIELD_ACCESS: |
|
1248 |
case EI_FIELD_MODIFICATION: |
|
1249 |
error = setWatchpoint(node); |
|
1250 |
break; |
|
1251 |
||
1252 |
case EI_BREAKPOINT: |
|
1253 |
error = setBreakpoint(node); |
|
1254 |
break; |
|
1255 |
||
1256 |
default: |
|
1257 |
break; |
|
1258 |
} |
|
1259 |
||
1260 |
/* Don't globally enable if the above failed */ |
|
1261 |
if (error == JVMTI_ERROR_NONE) { |
|
1262 |
jthread thread = requestThread(node); |
|
1263 |
||
1264 |
/* If this is the first request of it's kind on this |
|
1265 |
* thread (or all threads (thread == NULL)) then enable |
|
1266 |
* these events on this thread. |
|
1267 |
*/ |
|
1268 |
if (!eventHandlerRestricted_iterator( |
|
1269 |
NODE_EI(node), matchThread, thread)) { |
|
1270 |
error = threadControl_setEventMode(JVMTI_ENABLE, |
|
1271 |
NODE_EI(node), thread); |
|
1272 |
} |
|
1273 |
} |
|
1274 |
return error; |
|
1275 |
} |
|
1276 |
||
1277 |
/** |
|
1278 |
* Do any disabling of events (including clearing breakpoints etc) |
|
1279 |
* needed to no longer get the events requested by this handler node. |
|
1280 |
*/ |
|
1281 |
static jvmtiError |
|
1282 |
disableEvents(HandlerNode *node) |
|
1283 |
{ |
|
1284 |
jvmtiError error = JVMTI_ERROR_NONE; |
|
1285 |
jvmtiError error2 = JVMTI_ERROR_NONE; |
|
1286 |
jthread thread; |
|
1287 |
||
1288 |
||
1289 |
switch (NODE_EI(node)) { |
|
1290 |
/* The stepping code directly enables/disables stepping as |
|
1291 |
* necessary |
|
1292 |
*/ |
|
1293 |
case EI_SINGLE_STEP: |
|
1294 |
/* Internal thread event handlers are always present |
|
1295 |
* (hardwired in the event hook), so we don't change the |
|
1296 |
* notification mode here. |
|
1297 |
*/ |
|
1298 |
case EI_THREAD_START: |
|
1299 |
case EI_THREAD_END: |
|
1300 |
case EI_VM_INIT: |
|
1301 |
case EI_VM_DEATH: |
|
1302 |
case EI_CLASS_PREPARE: |
|
1303 |
case EI_GC_FINISH: |
|
1304 |
return error; |
|
1305 |
||
1306 |
case EI_FIELD_ACCESS: |
|
1307 |
case EI_FIELD_MODIFICATION: |
|
1308 |
error = clearWatchpoint(node); |
|
1309 |
break; |
|
1310 |
||
1311 |
case EI_BREAKPOINT: |
|
1312 |
error = clearBreakpoint(node); |
|
1313 |
break; |
|
1314 |
||
1315 |
default: |
|
1316 |
break; |
|
1317 |
} |
|
1318 |
||
1319 |
thread = requestThread(node); |
|
1320 |
||
1321 |
/* If this is the last request of it's kind on this thread |
|
1322 |
* (or all threads (thread == NULL)) then disable these |
|
1323 |
* events on this thread. |
|
1324 |
* |
|
1325 |
* Disable even if the above caused an error |
|
1326 |
*/ |
|
1327 |
if (!eventHandlerRestricted_iterator(NODE_EI(node), matchThread, thread)) { |
|
1328 |
error2 = threadControl_setEventMode(JVMTI_DISABLE, |
|
1329 |
NODE_EI(node), thread); |
|
1330 |
} |
|
1331 |
return error != JVMTI_ERROR_NONE? error : error2; |
|
1332 |
} |
|
1333 |
||
1334 |
||
1335 |
/***** filter (and event) installation and deinstallation *****/ |
|
1336 |
||
1337 |
/** |
|
1338 |
* Make the set of event filters that correspond with this |
|
1339 |
* node active (including enabling the corresponding events). |
|
1340 |
*/ |
|
1341 |
jvmtiError |
|
1342 |
eventFilterRestricted_install(HandlerNode *node) |
|
1343 |
{ |
|
1344 |
return enableEvents(node); |
|
1345 |
} |
|
1346 |
||
1347 |
/** |
|
1348 |
* Make the set of event filters that correspond with this |
|
1349 |
* node inactive (including disabling the corresponding events |
|
1350 |
* and freeing resources). |
|
1351 |
*/ |
|
1352 |
jvmtiError |
|
1353 |
eventFilterRestricted_deinstall(HandlerNode *node) |
|
1354 |
{ |
|
1355 |
jvmtiError error1, error2; |
|
1356 |
||
1357 |
error1 = disableEvents(node); |
|
1358 |
error2 = clearFilters(node); |
|
1359 |
||
1360 |
return error1 != JVMTI_ERROR_NONE? error1 : error2; |
|
1361 |
} |