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more weak reference work, plus debug logging

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This commit is contained in:
Joel Dice 2007-07-09 21:04:49 -06:00
parent b70e4b368f
commit 4decde57e6
2 changed files with 20 additions and 18 deletions
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27
src/machine.cpp
View File

@ -177,16 +177,22 @@ postVisit(Thread* t, Heap::Visitor* v)
if (m->heap->status(*p) == Heap::Unreachable) {
// reference is unreachable - remove it from the list
fprintf(stderr, "unreachable wr: %p\n", *p);
*p = jreferenceNext(t, *p);
} else if (m->heap->status(jreferenceTarget(t, *p)) == Heap::Unreachable) {
// target is unreachable - clear the reference and remove it
// from the list
fprintf(stderr, "target unreachable for wr: %p\n", *p);
jreferenceTarget(t, *p) = 0;
*p = jreferenceNext(t, *p);
} else {
// both reference and target are reachable
fprintf(stderr, "viable wr: %p\n", *p);
v->visit(&jreferenceTarget(t, *p));
v->visit(p);
@ -341,14 +347,6 @@ collect(Thread* t, Heap::CollectionType type)
cast<uintptr_t>(dst, 0) |= ExtendedMark;
extendedWord(t, dst, base) = takeHash(t, o);
}
if (classVmFlags(t, class_) & WeakReferenceFlag) {
fprintf(stderr, "weak reference to %p at %p\n",
jreferenceTarget(t, dst),
&jreferenceTarget(t, dst));
jreferenceNext(t, dst) = m->weakReferences;
m->weakReferences = dst;
}
}
virtual void walk(void* p, Heap::Walker* w) {
@ -482,6 +480,7 @@ Machine::Machine(System* system, Heap* heap, ClassFinder* classFinder):
finalizers(0),
tenuredFinalizers(0),
finalizeQueue(0),
weakReferences(0),
tenuredWeakReferences(0),
unsafe(false)
{
@ -998,6 +997,10 @@ objectMonitor(Thread* t, object o)
object p = hashMapFind(t, t->vm->monitorMap, o, objectHash, referenceEqual);
if (p) {
fprintf(stderr, "found monitor %p for object 0x%x\n",
static_cast<System::Monitor*>(pointerValue(t, p)),
objectHash(t, o));
return static_cast<System::Monitor*>(pointerValue(t, p));
} else {
PROTECT(t, o);
@ -1011,7 +1014,13 @@ objectMonitor(Thread* t, object o)
p = makePointer(t, m);
PROTECT(t, p);
object wr = makeWeakReference(t, o, 0);
object wr = makeWeakReference(t, o, t->vm->weakReferences);
t->vm->weakReferences = wr;
fprintf(stderr, "made monitor %p for object 0x%x\n",
m,
objectHash(t, o));
fprintf(stderr, "new wr: %p\n", wr);
hashMapInsert(t, t->vm->monitorMap, wr, p, referenceHash);

11
src/machine.h
View File

@ -23,8 +23,8 @@ namespace vm {
const bool Verbose = false;
const bool Debug = false;
const bool DebugRun = true;
const bool DebugStack = true;
const bool DebugRun = false;
const bool DebugStack = false;
const uintptr_t HashTakenMark = 1;
const uintptr_t ExtendedMark = 2;
@ -1644,13 +1644,6 @@ hash(const int8_t* s, unsigned length)
inline unsigned
baseSize(Thread* t, object o, object class_)
{
if (classArrayElementSize(t, class_)) {
noop();
if (cast<uintptr_t>(o, classFixedSize(t, class_) - BytesPerWord)) {
noop();
}
}
return divide(classFixedSize(t, class_), BytesPerWord)
+ divide(classArrayElementSize(t, class_)
* cast<uintptr_t>(o, classFixedSize(t, class_) - BytesPerWord),