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protect object from GC in compileVirtualMethod2; condense frame GC root maps to minimum size needed

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This commit is contained in:
Joel Dice 2009-04-27 14:46:43 +00:00
parent abc9da9b31
commit 90dcf084a2
1 changed files with 12 additions and 19 deletions
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31
src/compile.cpp
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@ -383,18 +383,6 @@ alignedFrameSize(MyThread* t, object method)
+ t->arch->frameFootprint(MaxNativeCallFootprint));
}
unsigned
usableFrameSize(MyThread* t, object method)
{
return alignedFrameSize(t, method) - t->arch->frameFooterSize();
}
unsigned
usableFrameSizeWithParameters(MyThread* t, object method)
{
return methodParameterFootprint(t, method) + usableFrameSize(t, method);
}
int
localOffset(MyThread* t, int v, object method)
{
@ -512,11 +500,16 @@ enum Event {
TraceEvent
};
unsigned
frameMapSizeInBits(MyThread* t, object method)
{
return localSize(t, method) + codeMaxStack(t, methodCode(t, method));
}
unsigned
frameMapSizeInWords(MyThread* t, object method)
{
return ceiling(usableFrameSizeWithParameters(t, method), BitsPerWord)
* BytesPerWord;
return ceiling(frameMapSizeInBits(t, method), BitsPerWord) * BytesPerWord;
}
uint16_t*
@ -4221,7 +4214,7 @@ compareTraceElementPointers(const void* va, const void* vb)
unsigned
frameObjectMapSize(MyThread* t, object method, object map)
{
int size = usableFrameSizeWithParameters(t, method);
int size = frameMapSizeInBits(t, method);
return ceiling(intArrayLength(t, map) * size, 32 + size);
}
@ -4347,7 +4340,7 @@ finish(MyThread* t, Allocator* allocator, Context* context)
qsort(elements, context->traceLogCount, sizeof(TraceElement*),
compareTraceElementPointers);
unsigned size = usableFrameSizeWithParameters(t, context->method);
unsigned size = frameMapSizeInBits(t, context->method);
object map = makeIntArray
(t, context->traceLogCount
+ ceiling(context->traceLogCount * size, 32));
@ -4619,6 +4612,7 @@ compileVirtualMethod2(MyThread* t, object class_, unsigned index)
PROTECT(t, class_);
object target = resolveTarget(t, class_, index);
PROTECT(t, target);
if (LIKELY(t->exception == 0)) {
compile(t, codeAllocator(t), 0, target);
@ -4903,8 +4897,7 @@ frameMapIndex(MyThread* t, object method, int32_t offset)
int32_t v = intArrayBody(t, map, middle);
if (offset == v) {
return (indexSize * 32)
+ (usableFrameSizeWithParameters(t, method) * middle);
return (indexSize * 32) + (frameMapSizeInBits(t, method) * middle);
} else if (offset < v) {
top = middle;
} else {
@ -4919,7 +4912,7 @@ void
visitStackAndLocals(MyThread* t, Heap::Visitor* v, void* frame, object method,
void* ip)
{
unsigned count = usableFrameSizeWithParameters(t, method);
unsigned count = frameMapSizeInBits(t, method);
if (count) {
object map = codePool(t, methodCode(t, method));