Exemple #1
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    def __init__(self, gctransformer):
        BaseRootWalker.__init__(self, gctransformer)
        # NB. 'self' is frozen, but we can use self.gcdata to store state
        gcdata = self.gcdata
        gcdata.can_look_at_partial_stack = True

        def incr_stack(n):
            top = gcdata.root_stack_top
            gcdata.root_stack_top = top + n * sizeofaddr
            return top

        self.incr_stack = incr_stack

        def decr_stack(n):
            top = gcdata.root_stack_top - n * sizeofaddr
            gcdata.root_stack_top = top
            return top

        self.decr_stack = decr_stack

        self.invoke_collect_stack_root = specialize.call_location()(
            lambda arg0, arg1, arg2, addr: arg0(self.gc, addr))

        self.shadow_stack_pool = ShadowStackPool(gcdata)
        rsd = gctransformer.root_stack_depth
        if rsd is not None:
            self.shadow_stack_pool.root_stack_depth = rsd
Exemple #2
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    def __init__(self, gctransformer):
        BaseRootWalker.__init__(self, gctransformer)
        # NB. 'self' is frozen, but we can use self.gcdata to store state
        gcdata = self.gcdata

        def incr_stack(n):
            top = gcdata.root_stack_top
            gcdata.root_stack_top = top + n*sizeofaddr
            return top
        self.incr_stack = incr_stack

        def decr_stack(n):
            top = gcdata.root_stack_top - n*sizeofaddr
            gcdata.root_stack_top = top
            return top
        self.decr_stack = decr_stack

        root_iterator = get_root_iterator(gctransformer)
        def walk_stack_root(callback, start, end):
            root_iterator.setcontext(NonConstant(llmemory.NULL))
            gc = self.gc
            addr = end
            while True:
                addr = root_iterator.nextleft(gc, start, addr)
                if addr == llmemory.NULL:
                    return
                callback(gc, addr)
        self.rootstackhook = walk_stack_root

        self.shadow_stack_pool = ShadowStackPool(gcdata)
        rsd = gctransformer.root_stack_depth
        if rsd is not None:
            self.shadow_stack_pool.root_stack_depth = rsd
Exemple #3
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    def __init__(self, gctransformer):
        BaseRootWalker.__init__(self, gctransformer)
        # NB. 'self' is frozen, but we can use self.gcdata to store state
        gcdata = self.gcdata

        def incr_stack(n):
            top = gcdata.root_stack_top
            gcdata.root_stack_top = top + n * sizeofaddr
            return top

        self.incr_stack = incr_stack

        def decr_stack(n):
            top = gcdata.root_stack_top - n * sizeofaddr
            gcdata.root_stack_top = top
            return top

        self.decr_stack = decr_stack

        def walk_stack_root(callback, start, end):
            gc = self.gc
            addr = end
            while addr != start:
                addr -= sizeofaddr
                if gc.points_to_valid_gc_object(addr):
                    callback(gc, addr)

        self.rootstackhook = walk_stack_root

        self.shadow_stack_pool = ShadowStackPool(gcdata)
        rsd = gctransformer.root_stack_depth
        if rsd is not None:
            self.shadow_stack_pool.root_stack_depth = rsd
Exemple #4
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    def __init__(self, gctransformer):
        BaseRootWalker.__init__(self, gctransformer)
        # NB. 'self' is frozen, but we can use self.gcdata to store state
        gcdata = self.gcdata

        def incr_stack(n):
            top = gcdata.root_stack_top
            gcdata.root_stack_top = top + n*sizeofaddr
            return top
        self.incr_stack = incr_stack

        def decr_stack(n):
            top = gcdata.root_stack_top - n*sizeofaddr
            gcdata.root_stack_top = top
            return top
        self.decr_stack = decr_stack

        def walk_stack_root(callback, start, end):
            gc = self.gc
            addr = end
            while addr != start:
                addr -= sizeofaddr
                if gc.points_to_valid_gc_object(addr):
                    callback(gc, addr)
        self.rootstackhook = walk_stack_root

        self.shadow_stack_pool = ShadowStackPool(gcdata)
        rsd = gctransformer.root_stack_depth
        if rsd is not None:
            self.shadow_stack_pool.root_stack_depth = rsd
Exemple #5
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    def __init__(self, gctransformer):
        BaseRootWalker.__init__(self, gctransformer)

        def _asm_callback():
            self.walk_stack_from()
        self._asm_callback = _asm_callback
        self._shape_decompressor = ShapeDecompressor()
        self._with_jit = hasattr(gctransformer.translator, '_jit2gc')
        if self._with_jit:
            jit2gc = gctransformer.translator._jit2gc
            self.frame_tid = jit2gc['frame_tid']
        self.gctransformer = gctransformer
        #
        # unless overridden in need_thread_support():
        self.belongs_to_current_thread = lambda framedata: True
Exemple #6
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    def __init__(self, gctransformer):
        BaseRootWalker.__init__(self, gctransformer)

        def _asm_callback():
            self.walk_stack_from()
        self._asm_callback = _asm_callback
        self._shape_decompressor = ShapeDecompressor()
        self._with_jit = hasattr(gctransformer.translator, '_jit2gc')
        if self._with_jit:
            jit2gc = gctransformer.translator._jit2gc
            self.frame_tid = jit2gc['frame_tid']
        self.gctransformer = gctransformer
        #
        # unless overridden in need_thread_support():
        self.belongs_to_current_thread = lambda framedata: True
Exemple #7
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 def setup_root_walker(self):
     self.shadow_stack_pool.initial_setup()
     BaseRootWalker.setup_root_walker(self)
Exemple #8
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 def setup_root_walker(self):
     self.shadow_stack_pool.initial_setup()
     BaseRootWalker.setup_root_walker(self)