Java Code Examples for org.apache.bcel.Const#MONITORENTER
The following examples show how to use
org.apache.bcel.Const#MONITORENTER .
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Example 1
| Source File: FindUnconditionalWait.java From spotbugs with GNU Lesser General Public License v2.1 | 6 votes |
|
@Override
public void sawOpcode(int seen) {
switch (stage) {
case 0:
if (seen == Const.MONITORENTER) {
stage = 1;
}
break;
case 1:
if (seen == Const.INVOKEVIRTUAL && "wait".equals(getNameConstantOperand())) {
bugReporter.reportBug(new BugInstance(this, "UW_UNCOND_WAIT",
"()V".equals(getSigConstantOperand()) ? NORMAL_PRIORITY : LOW_PRIORITY).addClassAndMethod(this)
.addSourceLine(this));
stage = 2;
}
break;
default:
break;
}
}
Example 2
| Source File: MultithreadedInstanceAccess.java From spotbugs with GNU Lesser General Public License v2.1 | 5 votes |
|
@Override
public void sawOpcode(int seen) {
if (seen == Const.MONITORENTER) {
monitorCount++;
} else if (seen == Const.MONITOREXIT) {
monitorCount--;
}
writingField = ((seen == Const.PUTFIELD) || (seen == Const.PUTFIELD_QUICK) || (seen == Const.PUTFIELD_QUICK_W));
}
Example 3
| Source File: MutableLock.java From spotbugs with GNU Lesser General Public License v2.1 | 5 votes |
|
@Override
public void sawOpcode(int seen) {
switch (seen) {
case Const.ALOAD_0:
thisOnTOS = true;
return;
case Const.MONITOREXIT:
setFields.clear();
break;
case Const.PUTFIELD:
if (getClassConstantOperand().equals(getClassName())) {
setFields.add(getNameConstantOperand());
}
break;
case Const.GETFIELD:
if (thisOnTOS && getClassConstantOperand().equals(getClassName()) && setFields.contains(getNameConstantOperand())
&& asUnsignedByte(codeBytes[getPC() + 3]) == Const.DUP && asUnsignedByte(codeBytes[getPC() + 5]) == Const.MONITORENTER
&& !finalFields.contains(getNameConstantOperand())) {
bugReporter.reportBug(new BugInstance(this, "ML_SYNC_ON_UPDATED_FIELD", NORMAL_PRIORITY).addClassAndMethod(this)
.addReferencedField(this).addSourceLine(this, getPC() + 5));
}
break;
default:
break;
}
thisOnTOS = false;
}
Example 4
| Source File: FindEmptySynchronizedBlock.java From spotbugs with GNU Lesser General Public License v2.1 | 5 votes |
|
@Override
public void sawOpcode(int seen) {
if (seen == Const.MONITOREXIT && (getPrevOpcode(2) == Const.MONITORENTER || getPrevOpcode(1) == Const.MONITORENTER)) {
bugReporter.reportBug(new BugInstance(this, "ESync_EMPTY_SYNC", NORMAL_PRIORITY).addClassAndMethod(this)
.addSourceLine(this));
}
}
Example 5
| Source File: SynchronizingOnContentsOfFieldToProtectField.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
|
@Override
public void sawOpcode(int seen) {
// System.out.println(state + " " + getPC() + " " + Const.getOpcodeName(seen));
if (countDown == 2 && seen == Const.GOTO) {
CodeException tryBlock = getSurroundingTryBlock(getPC());
if (tryBlock != null && tryBlock.getEndPC() == getPC()) {
pendingBug.lowerPriority();
}
}
if (countDown > 0) {
countDown--;
if (countDown == 0) {
if (seen == Const.MONITOREXIT) {
pendingBug.lowerPriority();
}
bugReporter.reportBug(pendingBug);
pendingBug = null;
}
}
if (seen == Const.PUTFIELD) {
if (syncField != null && getPrevOpcode(1) != Const.ALOAD_0 && syncField.equals(getXFieldOperand())) {
OpcodeStack.Item value = stack.getStackItem(0);
int priority = Priorities.HIGH_PRIORITY;
if (value.isNull()) {
priority = Priorities.NORMAL_PRIORITY;
}
pendingBug = new BugInstance(this, "ML_SYNC_ON_FIELD_TO_GUARD_CHANGING_THAT_FIELD", priority)
.addClassAndMethod(this).addField(syncField).addSourceLine(this);
countDown = 2;
}
}
if (seen == Const.MONITOREXIT) {
pendingBug = null;
countDown = 0;
}
if (seen == Const.MONITORENTER) {
syncField = null;
}
switch (state) {
case 0:
if (seen == Const.ALOAD_0) {
state = 1;
}
break;
case 1:
if (seen == Const.GETFIELD) {
state = 2;
field = getXFieldOperand();
} else {
state = 0;
}
break;
case 2:
if (seen == Const.DUP) {
state = 3;
} else {
state = 0;
}
break;
case 3:
if (isRegisterStore()) {
state = 4;
} else {
state = 0;
}
break;
case 4:
if (seen == Const.MONITORENTER) {
state = 0;
syncField = field;
} else {
state = 0;
}
break;
default:
break;
}
}
Example 6
| Source File: Noise.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
|
@Override
public void sawOpcode(int seen) {
int priority;
switch (seen) {
case Const.INVOKEINTERFACE:
case Const.INVOKEVIRTUAL:
case Const.INVOKESPECIAL:
case Const.INVOKESTATIC:
hq.pushHash(getClassConstantOperand());
if (getNameConstantOperand().indexOf('$') == -1) {
hq.pushHash(getNameConstantOperand());
}
hq.pushHash(getSigConstantOperand());
priority = hq.getPriority();
if (priority <= Priorities.LOW_PRIORITY) {
accumulator.accumulateBug(new BugInstance(this, "NOISE_METHOD_CALL", priority).addClassAndMethod(this)
.addCalledMethod(this), this);
}
break;
case Const.GETFIELD:
case Const.PUTFIELD:
case Const.GETSTATIC:
case Const.PUTSTATIC:
hq.pushHash(getClassConstantOperand());
if (getNameConstantOperand().indexOf('$') == -1) {
hq.pushHash(getNameConstantOperand());
}
hq.pushHash(getSigConstantOperand());
priority = hq.getPriority();
if (priority <= Priorities.LOW_PRIORITY) {
accumulator.accumulateBug(new BugInstance(this, "NOISE_FIELD_REFERENCE", priority).addClassAndMethod(this)
.addReferencedField(this), this);
}
break;
case Const.CHECKCAST:
case Const.INSTANCEOF:
case Const.NEW:
hq.pushHash(getClassConstantOperand());
break;
case Const.IFEQ:
case Const.IFNE:
case Const.IFNONNULL:
case Const.IFNULL:
case Const.IF_ICMPEQ:
case Const.IF_ICMPNE:
case Const.IF_ICMPLE:
case Const.IF_ICMPGE:
case Const.IF_ICMPGT:
case Const.IF_ICMPLT:
case Const.IF_ACMPEQ:
case Const.IF_ACMPNE:
case Const.RETURN:
case Const.ARETURN:
case Const.IRETURN:
case Const.MONITORENTER:
case Const.MONITOREXIT:
case Const.IINC:
case Const.NEWARRAY:
case Const.TABLESWITCH:
case Const.LOOKUPSWITCH:
case Const.LCMP:
case Const.INEG:
case Const.IADD:
case Const.IMUL:
case Const.ISUB:
case Const.IDIV:
case Const.IREM:
case Const.IXOR:
case Const.ISHL:
case Const.ISHR:
case Const.IUSHR:
case Const.IAND:
case Const.IOR:
case Const.LAND:
case Const.LOR:
case Const.LADD:
case Const.LMUL:
case Const.LSUB:
case Const.LDIV:
case Const.LSHL:
case Const.LSHR:
case Const.LUSHR:
case Const.AALOAD:
case Const.AASTORE:
case Const.IALOAD:
case Const.IASTORE:
case Const.BALOAD:
case Const.BASTORE:
hq.push(seen);
priority = hq.getPriority();
if (priority <= Priorities.LOW_PRIORITY) {
accumulator.accumulateBug(
new BugInstance(this, "NOISE_OPERATION", priority).addClassAndMethod(this).addString(Const.getOpcodeName(seen)),
this);
}
break;
default:
break;
}
}
Example 7
| Source File: SynchronizationOnSharedBuiltinConstant.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
|
@Override
public void sawOpcode(int seen) {
switch (seen) {
case Const.MONITORENTER:
OpcodeStack.Item top = stack.getStackItem(0);
if (pendingBug != null) {
accumulateBug();
}
monitorEnterPC = getPC();
syncSignature = top.getSignature();
isSyncOnBoolean = false;
Object constant = top.getConstant();
if ("Ljava/lang/String;".equals(syncSignature) && constant instanceof String) {
pendingBug = new BugInstance(this, "DL_SYNCHRONIZATION_ON_SHARED_CONSTANT", NORMAL_PRIORITY)
.addClassAndMethod(this);
String value = (String) constant;
if (identified.matcher(value).matches()) {
pendingBug.addString(value).describe(StringAnnotation.STRING_CONSTANT_ROLE);
}
} else if (badSignatures.contains(syncSignature)) {
isSyncOnBoolean = "Ljava/lang/Boolean;".equals(syncSignature);
XField field = top.getXField();
FieldSummary fieldSummary = AnalysisContext.currentAnalysisContext().getFieldSummary();
OpcodeStack.Item summary = fieldSummary.getSummary(field);
int priority = NORMAL_PRIORITY;
if (isSyncOnBoolean) {
priority--;
}
if (newlyConstructedObject(summary)) {
pendingBug = new BugInstance(this, "DL_SYNCHRONIZATION_ON_UNSHARED_BOXED_PRIMITIVE", NORMAL_PRIORITY)
.addClassAndMethod(this).addType(syncSignature).addOptionalField(field)
.addOptionalLocalVariable(this, top);
} else if (isSyncOnBoolean) {
pendingBug = new BugInstance(this, "DL_SYNCHRONIZATION_ON_BOOLEAN", priority).addClassAndMethod(this)
.addOptionalField(field).addOptionalLocalVariable(this, top);
} else {
pendingBug = new BugInstance(this, "DL_SYNCHRONIZATION_ON_BOXED_PRIMITIVE", priority).addClassAndMethod(this)
.addType(syncSignature).addOptionalField(field).addOptionalLocalVariable(this, top);
}
}
break;
case Const.MONITOREXIT:
accumulateBug();
break;
default:
break;
}
}
Example 8
| Source File: SynchronizeAndNullCheckField.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
|
@Override
public void sawOpcode(int seen) {
// System.out.println(getPC() + " " + Const.getOpcodeName(seen) + " " +
// currState);
switch (currState) {
case 0:
if (seen == Const.GETFIELD || seen == Const.GETSTATIC) {
syncField = FieldAnnotation.fromReferencedField(this);
currState = 1;
}
break;
case 1:
if (seen == Const.DUP) {
currState = 2;
} else {
currState = 0;
}
break;
case 2:
if (seen == Const.ASTORE || seen == Const.ASTORE_0 || seen == Const.ASTORE_1 || seen == Const.ASTORE_2 || seen == Const.ASTORE_3) {
currState = 3;
} else {
currState = 0;
}
break;
case 3:
if (seen == Const.MONITORENTER) {
currState = 4;
} else {
currState = 0;
}
break;
case 4:
if (seen == Const.GETFIELD || seen == Const.GETSTATIC) {
gottenField = FieldAnnotation.fromReferencedField(this);
currState = 5;
} else {
currState = 0;
}
break;
case 5:
if ((seen == Const.IFNONNULL || seen == Const.IFNULL) && gottenField.equals(syncField)) {
BugInstance bug = new BugInstance(this, "NP_SYNC_AND_NULL_CHECK_FIELD", NORMAL_PRIORITY).addClass(this)
.addMethod(this).addField(syncField).addSourceLine(this);
bugReporter.reportBug(bug);
} else {
currState = 0;
}
break;
default:
currState = 0;
}
}
