int JavaObjectThrowable::getStackTraceBase(JavaObjectThrowable * self) {
JavaObject * stack = NULL;
llvm_gcroot(self, 0);
llvm_gcroot(stack, 0);
if (!self->backtrace) return 0;
Jnjvm* vm = JavaThread::get()->getJVM();
stack = self->backtrace;
sint32 index = 2;;
while (index != JavaArray::getSize(stack)) {
vmkit::FrameInfo* FI = vm->IPToFrameInfo(ArrayPtr::getElement((ArrayPtr*)stack, index));
if (FI->Metadata == NULL) ++index;
else {
JavaMethod* meth = (JavaMethod*)FI->Metadata;
assert(meth && "Wrong stack trace");
if (meth->classDef->isSubclassOf(vm->upcalls->newThrowable)) {
++index;
} else return index;
}
}
assert(0 && "Invalid stack trace!");
return 0;
}
int JavaObjectThrowable::getStackTraceDepth(JavaObjectThrowable * self) {
JavaObject * stack = NULL;
llvm_gcroot(self, 0);
llvm_gcroot(stack, 0);
if (!self->backtrace) return 0;
Jnjvm* vm = JavaThread::get()->getJVM();
stack = self->backtrace;
sint32 index = getStackTraceBase(self);
sint32 size = 0;
sint32 cur = index;
while (cur < JavaArray::getSize(stack)) {
vmkit::FrameInfo* FI = vm->IPToFrameInfo(ArrayPtr::getElement((ArrayPtr*)stack, cur));
++cur;
if (FI->Metadata != NULL) ++size;
}
return size;
}