/**
* Free up global refs held by the filter.
* free things up at the JNI level if needed.
*/
static jvmtiError
clearFilters(HandlerNode *node)
{
JNIEnv *env = getEnv();
jint i;
jvmtiError error = JVMTI_ERROR_NONE;
Filter *filter = FILTERS_ARRAY(node);
for (i = 0; i < FILTER_COUNT(node); ++i, ++filter) {
switch (filter->modifier) {
case JDWP_REQUEST_MODIFIER(ThreadOnly):
if ( filter->u.ThreadOnly.thread != NULL ) {
tossGlobalRef(env, &(filter->u.ThreadOnly.thread));
}
break;
case JDWP_REQUEST_MODIFIER(LocationOnly):
tossGlobalRef(env, &(filter->u.LocationOnly.clazz));
break;
case JDWP_REQUEST_MODIFIER(FieldOnly):
tossGlobalRef(env, &(filter->u.FieldOnly.clazz));
break;
case JDWP_REQUEST_MODIFIER(ExceptionOnly):
if ( filter->u.ExceptionOnly.exception != NULL ) {
tossGlobalRef(env, &(filter->u.ExceptionOnly.exception));
}
break;
case JDWP_REQUEST_MODIFIER(InstanceOnly):
if ( filter->u.InstanceOnly.instance != NULL ) {
tossGlobalRef(env, &(filter->u.InstanceOnly.instance));
}
break;
case JDWP_REQUEST_MODIFIER(ClassOnly):
tossGlobalRef(env, &(filter->u.ClassOnly.clazz));
break;
case JDWP_REQUEST_MODIFIER(ClassMatch):
jvmtiDeallocate(filter->u.ClassMatch.classPattern);
break;
case JDWP_REQUEST_MODIFIER(ClassExclude):
jvmtiDeallocate(filter->u.ClassExclude.classPattern);
break;
case JDWP_REQUEST_MODIFIER(Step): {
jthread thread = filter->u.Step.thread;
error = stepControl_endStep(thread);
if (error == JVMTI_ERROR_NONE) {
tossGlobalRef(env, &(filter->u.Step.thread));
}
break;
}
}
}
if (error == JVMTI_ERROR_NONE) {
FILTER_COUNT(node) = 0; /* blast so we don't clear again */
}
return error;
}
/**
* Set a breakpoint if this is the first one at this location.
*/
static jvmtiError
setBreakpoint(HandlerNode *node)
{
jvmtiError error = JVMTI_ERROR_NONE;
Filter *filter;
filter = findFilter(node, JDWP_REQUEST_MODIFIER(LocationOnly));
if (filter == NULL) {
/* bp event with no location filter */
error = AGENT_ERROR_INTERNAL;
} else {
LocationFilter *lf = &(filter->u.LocationOnly);
/* if this is the first handler for this
* location, set bp at JVMTI level
*/
if (!eventHandlerRestricted_iterator(
EI_BREAKPOINT, matchBreakpoint, lf)) {
LOG_LOC(("SetBreakpoint at location: method=%p,location=%d",
lf->method, (int)lf->location));
error = JVMTI_FUNC_PTR(gdata->jvmti,SetBreakpoint)
(gdata->jvmti, lf->method, lf->location);
}
}
return error;
}
jvmtiError
eventFilter_setStepFilter(HandlerNode *node, jint index,
jthread thread, jint size, jint depth)
{
jvmtiError error;
JNIEnv *env = getEnv();
StepFilter *filter = &FILTER(node, index).u.Step;
if (index >= FILTER_COUNT(node)) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
if (NODE_EI(node) != EI_SINGLE_STEP) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
/* Create a thread ref that will live beyond */
/* the end of this call */
saveGlobalRef(env, thread, &(filter->thread));
error = stepControl_beginStep(env, filter->thread, size, depth, node);
if (error != JVMTI_ERROR_NONE) {
tossGlobalRef(env, &(filter->thread));
return error;
}
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(Step);
filter->depth = depth;
filter->size = size;
return JVMTI_ERROR_NONE;
}
/**
* Clear a watchpoint if this is the last one on this field.
*/
static jvmtiError
clearWatchpoint(HandlerNode *node)
{
jvmtiError error = JVMTI_ERROR_NONE;
Filter *filter;
filter = findFilter(node, JDWP_REQUEST_MODIFIER(FieldOnly));
if (filter == NULL) {
/* event with no field filter */
error = AGENT_ERROR_INTERNAL;
} else {
FieldFilter *ff = &(filter->u.FieldOnly);
/* if this is the last handler for this
* field, clear wp at JVMTI level
*/
if (!eventHandlerRestricted_iterator(
NODE_EI(node), matchWatchpoint, ff)) {
error = (NODE_EI(node) == EI_FIELD_ACCESS) ?
JVMTI_FUNC_PTR(gdata->jvmti,ClearFieldAccessWatch)
(gdata->jvmti, ff->clazz, ff->field) :
JVMTI_FUNC_PTR(gdata->jvmti,ClearFieldModificationWatch)
(gdata->jvmti, ff->clazz, ff->field);
}
}
return error;
}
jint
eventFilter_setClassOnlyFilter(HandlerNode *node, jint index,
jclass clazz)
{
JNIEnv *env = getEnv();
ClassFilter *filter = &FILTER(node, index).u.ClassOnly;
if (index >= FILTER_COUNT(node)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
if ((KIND(node) == JVMDI_EVENT_USER_DEFINED) ||
(KIND(node) == JVMDI_EVENT_CLASS_UNLOAD) ||
(KIND(node) == JVMDI_EVENT_THREAD_START) ||
(KIND(node) == JVMDI_EVENT_THREAD_END)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
/* Create a class ref that will live beyond */
/* the end of this call */
clazz = (*env)->NewGlobalRef(env, clazz);
if (clazz == NULL) {
return JVMDI_ERROR_OUT_OF_MEMORY;
}
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(ClassOnly);
filter->clazz = clazz;
return JVMDI_ERROR_NONE;
}
jvmtiError
eventFilter_setExceptionOnlyFilter(HandlerNode *node, jint index,
jclass exceptionClass,
jboolean caught,
jboolean uncaught)
{
JNIEnv *env = getEnv();
ExceptionFilter *filter = &FILTER(node, index).u.ExceptionOnly;
if (index >= FILTER_COUNT(node)) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
if (NODE_EI(node) != EI_EXCEPTION) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
filter->exception = NULL;
if (exceptionClass != NULL) {
/* Create a class ref that will live beyond */
/* the end of this call */
saveGlobalRef(env, exceptionClass, &(filter->exception));
}
FILTER(node, index).modifier =
JDWP_REQUEST_MODIFIER(ExceptionOnly);
filter->caught = caught;
filter->uncaught = uncaught;
return JVMTI_ERROR_NONE;
}
jint
eventFilter_setExceptionOnlyFilter(HandlerNode *node, jint index,
jclass exceptionClass,
jboolean caught,
jboolean uncaught)
{
JNIEnv *env = getEnv();
ExceptionFilter *filter = &FILTER(node, index).u.ExceptionOnly;
if (index >= FILTER_COUNT(node)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
if (KIND(node) != JVMDI_EVENT_EXCEPTION) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
if (exceptionClass != NULL) {
/* Create a class ref that will live beyond */
/* the end of this call */
exceptionClass = (*env)->NewGlobalRef(env, exceptionClass);
if (exceptionClass == NULL) {
return JVMDI_ERROR_OUT_OF_MEMORY;
}
}
FILTER(node, index).modifier =
JDWP_REQUEST_MODIFIER(ExceptionOnly);
filter->exception = exceptionClass;
filter->caught = caught;
filter->uncaught = uncaught;
return JVMDI_ERROR_NONE;
}
jint
eventFilter_setStepFilter(HandlerNode *node, jint index,
jthread thread, jint size, jint depth)
{
jint error;
JNIEnv *env = getEnv();
StepFilter *filter = &FILTER(node, index).u.Step;
if (index >= FILTER_COUNT(node)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
if (KIND(node) != JVMDI_EVENT_SINGLE_STEP) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
/* Create a thread ref that will live beyond */
/* the end of this call */
thread = (*env)->NewGlobalRef(env, thread);
if (thread == NULL) {
return JVMDI_ERROR_OUT_OF_MEMORY;
}
error = stepControl_beginStep(thread, size,depth, node);
if (error != JVMDI_ERROR_NONE) {
(*env)->DeleteGlobalRef(env, thread);
return error;
}
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(Step);
filter->thread = thread;
filter->depth = depth;
filter->size = size;
return JVMDI_ERROR_NONE;
}
jvmtiError
eventFilter_setLocationOnlyFilter(HandlerNode *node, jint index,
jclass clazz, jmethodID method,
jlocation location)
{
JNIEnv *env = getEnv();
LocationFilter *filter = &FILTER(node, index).u.LocationOnly;
if (index >= FILTER_COUNT(node)) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
if ((NODE_EI(node) != EI_BREAKPOINT) &&
(NODE_EI(node) != EI_FIELD_ACCESS) &&
(NODE_EI(node) != EI_FIELD_MODIFICATION) &&
(NODE_EI(node) != EI_SINGLE_STEP) &&
(NODE_EI(node) != EI_EXCEPTION)) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
/* Create a class ref that will live beyond */
/* the end of this call */
saveGlobalRef(env, clazz, &(filter->clazz));
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(LocationOnly);
filter->method = method;
filter->location = location;
return JVMTI_ERROR_NONE;
}
jint
eventFilter_setLocationOnlyFilter(HandlerNode *node, jint index,
jclass clazz, jmethodID method,
jlocation location)
{
JNIEnv *env = getEnv();
LocationFilter *filter = &FILTER(node, index).u.LocationOnly;
if (index >= FILTER_COUNT(node)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
if ((KIND(node) != JVMDI_EVENT_BREAKPOINT) &&
(KIND(node) != JVMDI_EVENT_FIELD_ACCESS) &&
(KIND(node) != JVMDI_EVENT_FIELD_MODIFICATION) &&
(KIND(node) != JVMDI_EVENT_SINGLE_STEP) &&
(KIND(node) != JVMDI_EVENT_EXCEPTION)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
/* Create a class ref that will live beyond */
/* the end of this call */
clazz = (*env)->NewGlobalRef(env, clazz);
if (clazz == NULL) {
return JVMDI_ERROR_OUT_OF_MEMORY;
}
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(LocationOnly);
filter->clazz = clazz;
filter->method = method;
filter->location = location;
return JVMDI_ERROR_NONE;
}
jint
eventFilter_setFieldOnlyFilter(HandlerNode *node, jint index,
jclass clazz, jfieldID field)
{
JNIEnv *env = getEnv();
FieldFilter *filter = &FILTER(node, index).u.FieldOnly;
if (index >= FILTER_COUNT(node)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
if ((KIND(node) != JVMDI_EVENT_FIELD_ACCESS) &&
(KIND(node) != JVMDI_EVENT_FIELD_MODIFICATION)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
/* Create a class ref that will live beyond */
/* the end of this call */
clazz = (*env)->NewGlobalRef(env, clazz);
if (clazz == NULL) {
return JVMDI_ERROR_OUT_OF_MEMORY;
}
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(FieldOnly);
filter->clazz = clazz;
filter->field = field;
return JVMDI_ERROR_NONE;
}
/**
* Clear a watchpoint if this is the last one on this field.
*/
static jint
clearWatchpoint(HandlerNode *node)
{
jint error = JVMDI_ERROR_NONE;
Filter *filter;
filter = findFilter(node, JDWP_REQUEST_MODIFIER(FieldOnly));
if (filter == NULL) {
/* event with no field filter */
error = JVMDI_ERROR_INTERNAL;
} else {
FieldFilter *ff = &(filter->u.FieldOnly);
/* if this is the last handler for this
* field, clear wp at jvmdi level
*/
if (!eventHandlerRestricted_iterator(
KIND(node), matchWatchpoint, ff)) {
error = (KIND(node) == JVMDI_EVENT_FIELD_ACCESS) ?
jvmdi->ClearFieldAccessWatch(ff->clazz,
ff->field) :
jvmdi->ClearFieldModificationWatch(ff->clazz,
ff->field);
}
}
return error;
}
/* Determine if this event is interesting to this handler. Do so
* by checking each of the handler's filters. Return false if any
* of the filters fail, true if the handler wants this event.
* Special version of filter for unloads since they don't have an
* event structure or a jclass.
*
* If shouldDelete is returned true, a count filter has expired
* and the corresponding node should be deleted.
*/
jboolean
eventFilterRestricted_passesUnloadFilter(JNIEnv *env,
char *classname,
HandlerNode *node,
jboolean *shouldDelete)
{
Filter *filter = FILTERS_ARRAY(node);
int i;
*shouldDelete = JNI_FALSE;
for (i = 0; i < FILTER_COUNT(node); ++i, ++filter) {
switch (filter->modifier) {
case JDWP_REQUEST_MODIFIER(Count): {
JDI_ASSERT(filter->u.Count.count > 0);
if (--filter->u.Count.count > 0) {
return JNI_FALSE;
}
*shouldDelete = JNI_TRUE;
break;
}
case JDWP_REQUEST_MODIFIER(ClassMatch): {
if (!patternStringMatch(classname,
filter->u.ClassMatch.classPattern)) {
return JNI_FALSE;
}
break;
}
case JDWP_REQUEST_MODIFIER(ClassExclude): {
if (patternStringMatch(classname,
filter->u.ClassExclude.classPattern)) {
return JNI_FALSE;
}
break;
}
default:
ERROR_MESSAGE_EXIT("Invalid filter modifier");
return JNI_FALSE;
}
}
return JNI_TRUE;
}
jint
eventFilter_setConditionalFilter(HandlerNode *node, jint index,
jint exprID)
{
ConditionalFilter *filter = &FILTER(node, index).u.Conditional;
if (index >= FILTER_COUNT(node)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(Conditional);
filter->exprID = exprID;
return JVMDI_ERROR_NONE;
}
/**
* Determine if the given breakpoint node is in the specified class.
*/
jboolean
eventFilterRestricted_isBreakpointInClass(JNIEnv *env, jclass clazz,
HandlerNode *node)
{
Filter *filter = FILTERS_ARRAY(node);
int i;
for (i = 0; i < FILTER_COUNT(node); ++i, ++filter) {
switch (filter->modifier) {
case JDWP_REQUEST_MODIFIER(LocationOnly):
return isSameObject(env, clazz, filter->u.LocationOnly.clazz);
}
}
return JNI_TRUE; /* should never come here */
}
/**
* Determine the thread this node is filtered on.
* NULL if not thread filtered.
*/
static jthread
requestThread(HandlerNode *node)
{
int i;
Filter *filter = FILTERS_ARRAY(node);
for (i = 0; i < FILTER_COUNT(node); ++i, ++filter) {
switch (filter->modifier) {
case JDWP_REQUEST_MODIFIER(ThreadOnly):
return filter->u.ThreadOnly.thread;
}
}
return NULL;
}
jint
eventFilter_setCountFilter(HandlerNode *node, jint index,
jint count)
{
CountFilter *filter = &FILTER(node, index).u.Count;
if (index >= FILTER_COUNT(node)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
if (count <= 0) {
return JDWP_ERROR(INVALID_COUNT);
} else {
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(Count);
filter->count = count;
return JVMDI_ERROR_NONE;
}
}
jvmtiError
eventFilter_setSourceNameMatchFilter(HandlerNode *node,
jint index,
char *sourceNamePattern) {
SourceNameFilter *filter = &FILTER(node, index).u.SourceNameOnly;
if (index >= FILTER_COUNT(node)) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
if (NODE_EI(node) != EI_CLASS_PREPARE) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
FILTER(node, index).modifier =
JDWP_REQUEST_MODIFIER(SourceNameMatch);
filter->sourceNamePattern = sourceNamePattern;
return JVMTI_ERROR_NONE;
}
jvmtiError
eventFilter_setThreadOnlyFilter(HandlerNode *node, jint index,
jthread thread)
{
JNIEnv *env = getEnv();
ThreadFilter *filter = &FILTER(node, index).u.ThreadOnly;
if (index >= FILTER_COUNT(node)) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
if (NODE_EI(node) == EI_GC_FINISH) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
/* Create a thread ref that will live beyond */
/* the end of this call */
saveGlobalRef(env, thread, &(filter->thread));
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(ThreadOnly);
return JVMTI_ERROR_NONE;
}
jvmtiError
eventFilter_setClassExcludeFilter(HandlerNode *node, jint index,
char *classPattern)
{
MatchFilter *filter = &FILTER(node, index).u.ClassExclude;
if (index >= FILTER_COUNT(node)) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
if (
(NODE_EI(node) == EI_THREAD_START) ||
(NODE_EI(node) == EI_THREAD_END)) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
FILTER(node, index).modifier =
JDWP_REQUEST_MODIFIER(ClassExclude);
filter->classPattern = classPattern;
return JVMTI_ERROR_NONE;
}
/**
* Determine if the specified watchpoint node has the
* same field as the FieldFilter passed in arg.
*
* This is a match function called by a
* eventHandlerRestricted_iterator invokation.
*/
static jboolean
matchWatchpoint(JNIEnv *env, HandlerNode *node, void *arg)
{
FieldFilter *goal = (FieldFilter *)arg;
Filter *filter = FILTERS_ARRAY(node);
int i;
for (i = 0; i < FILTER_COUNT(node); ++i, ++filter) {
switch (filter->modifier) {
case JDWP_REQUEST_MODIFIER(FieldOnly): {
FieldFilter *trial = &(filter->u.FieldOnly);
if (trial->field == goal->field &&
isSameObject(env, trial->clazz, goal->clazz)) {
return JNI_TRUE;
}
}
}
}
return JNI_FALSE;
}
jint
eventFilter_setClassExcludeFilter(HandlerNode *node, jint index,
char *classPattern)
{
MatchFilter *filter = &FILTER(node, index).u.ClassExclude;
if (index >= FILTER_COUNT(node)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
if ((KIND(node) == JVMDI_EVENT_USER_DEFINED) ||
(KIND(node) == JVMDI_EVENT_THREAD_START) ||
(KIND(node) == JVMDI_EVENT_THREAD_END)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
FILTER(node, index).modifier =
JDWP_REQUEST_MODIFIER(ClassExclude);
filter->classPattern = classPattern;
return JVMDI_ERROR_NONE;
}
jvmtiError
eventFilter_setInstanceOnlyFilter(HandlerNode *node, jint index,
jobject instance)
{
JNIEnv *env = getEnv();
InstanceFilter *filter = &FILTER(node, index).u.InstanceOnly;
if (index >= FILTER_COUNT(node)) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
filter->instance = NULL;
if (instance != NULL) {
/* Create an object ref that will live beyond
* the end of this call
*/
saveGlobalRef(env, instance, &(filter->instance));
}
FILTER(node, index).modifier =
JDWP_REQUEST_MODIFIER(InstanceOnly);
return JVMTI_ERROR_NONE;
}
/**
* Determine if the specified breakpoint node is in the
* same location as the LocationFilter passed in arg.
*
* This is a match function called by a
* eventHandlerRestricted_iterator invokation.
*/
static jboolean
matchBreakpoint(JNIEnv *env, HandlerNode *node, void *arg)
{
LocationFilter *goal = (LocationFilter *)arg;
Filter *filter = FILTERS_ARRAY(node);
int i;
for (i = 0; i < FILTER_COUNT(node); ++i, ++filter) {
switch (filter->modifier) {
case JDWP_REQUEST_MODIFIER(LocationOnly): {
LocationFilter *trial = &(filter->u.LocationOnly);
if (trial->method == goal->method &&
trial->location == goal->location &&
isSameObject(env, trial->clazz, goal->clazz)) {
return JNI_TRUE;
}
}
}
}
return JNI_FALSE;
}
jvmtiError
eventFilter_setFieldOnlyFilter(HandlerNode *node, jint index,
jclass clazz, jfieldID field)
{
JNIEnv *env = getEnv();
FieldFilter *filter = &FILTER(node, index).u.FieldOnly;
if (index >= FILTER_COUNT(node)) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
if ((NODE_EI(node) != EI_FIELD_ACCESS) &&
(NODE_EI(node) != EI_FIELD_MODIFICATION)) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
/* Create a class ref that will live beyond */
/* the end of this call */
saveGlobalRef(env, clazz, &(filter->clazz));
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(FieldOnly);
filter->field = field;
return JVMTI_ERROR_NONE;
}
jvmtiError
eventFilter_setClassOnlyFilter(HandlerNode *node, jint index,
jclass clazz)
{
JNIEnv *env = getEnv();
ClassFilter *filter = &FILTER(node, index).u.ClassOnly;
if (index >= FILTER_COUNT(node)) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
if (
(NODE_EI(node) == EI_GC_FINISH) ||
(NODE_EI(node) == EI_THREAD_START) ||
(NODE_EI(node) == EI_THREAD_END)) {
return AGENT_ERROR_ILLEGAL_ARGUMENT;
}
/* Create a class ref that will live beyond */
/* the end of this call */
saveGlobalRef(env, clazz, &(filter->clazz));
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(ClassOnly);
return JVMTI_ERROR_NONE;
}
jint
eventFilter_setThreadOnlyFilter(HandlerNode *node, jint index,
jthread thread)
{
JNIEnv *env = getEnv();
ThreadFilter *filter = &FILTER(node, index).u.ThreadOnly;
if (index >= FILTER_COUNT(node)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
if (KIND(node) == JVMDI_EVENT_CLASS_UNLOAD) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
/* Create a thread ref that will live beyond */
/* the end of this call */
thread = (*env)->NewGlobalRef(env, thread);
if (thread == NULL) {
return JVMDI_ERROR_OUT_OF_MEMORY;
}
FILTER(node, index).modifier = JDWP_REQUEST_MODIFIER(ThreadOnly);
filter->thread = thread;
return JVMDI_ERROR_NONE;
}
/**
* Clear a breakpoint if this is the last one at this location.
*/
static jint
clearBreakpoint(HandlerNode *node)
{
jint error = JVMDI_ERROR_NONE;
Filter *filter;
filter = findFilter(node, JDWP_REQUEST_MODIFIER(LocationOnly));
if (filter == NULL) {
/* bp event with no location filter */
error = JVMDI_ERROR_INTERNAL;
} else {
LocationFilter *lf = &(filter->u.LocationOnly);
/* if this is the last handler for this
* location, clear bp at jvmdi level
*/
if (!eventHandlerRestricted_iterator(
JVMDI_EVENT_BREAKPOINT, matchBreakpoint, lf)) {
error = jvmdi->ClearBreakpoint(lf->clazz, lf->method,
lf->location);
}
}
return error;
}
jint
eventFilter_setInstanceOnlyFilter(HandlerNode *node, jint index,
jobject instance)
{
JNIEnv *env = getEnv();
InstanceFilter *filter = &FILTER(node, index).u.InstanceOnly;
if (index >= FILTER_COUNT(node)) {
return JVMDI_ERROR_ILLEGAL_ARGUMENT;
}
if (instance != NULL) {
/* Create an object ref that will live beyond
* the end of this call
*/
instance = (*env)->NewGlobalRef(env, instance);
if (instance == NULL) {
return JVMDI_ERROR_OUT_OF_MEMORY;
}
}
FILTER(node, index).modifier =
JDWP_REQUEST_MODIFIER(InstanceOnly);
filter->instance = instance;
return JVMDI_ERROR_NONE;
}
/**
* This function returns true only if it is certain that
* all events for the given node in the given frame will
* be filtered. It is used to optimize stepping. (If this
* function returns true the stepping algorithm does not
* have to step through every instruction in this frame;
* instead, it can use more efficient method entry/exit
* events.
*/
jboolean
eventFilter_predictFiltering(HandlerNode *node, jframeID frame)
{
Filter *filter = FILTERS_ARRAY(node);
int i;
jclass clazz;
jmethodID method;
jlocation location;
jboolean willBeFiltered = JNI_FALSE;
jboolean done = JNI_FALSE;
JNIEnv *env = getEnv();
jint error;
error = jvmdi->GetFrameLocation(frame, &clazz,
&method, &location);
if (error != JVMDI_ERROR_NONE) {
return JNI_FALSE;
}
for (i = 0; (i < FILTER_COUNT(node)) && (!done); ++i, ++filter) {
switch (filter->modifier) {
case JDWP_REQUEST_MODIFIER(ClassOnly):
if (!(*env)->IsAssignableFrom(env, clazz,
filter->u.ClassOnly.clazz)) {
willBeFiltered = JNI_TRUE;
done = JNI_TRUE;
}
break;
case JDWP_REQUEST_MODIFIER(Count): {
/*
* If preceeding filters have determined that events will
* be filtered out, that is fine and we won't get here.
* However, the count must be decremented - even if
* subsequent filters will filter these events. We
* thus must end now unable to predict
*/
done = JNI_TRUE;
break;
}
case JDWP_REQUEST_MODIFIER(ClassMatch): {
if (!patternMatch(clazz,
filter->u.ClassMatch.classPattern)) {
willBeFiltered = JNI_TRUE;
done = JNI_TRUE;
}
break;
}
case JDWP_REQUEST_MODIFIER(ClassExclude): {
if (patternMatch(clazz,
filter->u.ClassExclude.classPattern)) {
willBeFiltered = JNI_TRUE;
done = JNI_TRUE;
}
break;
}
}
}
(*env)->DeleteGlobalRef(env, clazz);
return willBeFiltered;
}
