fschneider@google.com
893b25e5b4
Because this CL also changed the way spill slots are allocated for catch entry blocks it caused invalid code for optimized try-catch under certain conditions. R=srdjan@google.com Review URL: https://codereview.chromium.org//141163009 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@31948 260f80e4-7a28-3924-810f-c04153c831b5
91 lines
2.2 KiB
C++
91 lines
2.2 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef VM_VISITOR_H_
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#define VM_VISITOR_H_
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#include "vm/globals.h"
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#include "vm/growable_array.h"
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namespace dart {
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// Forward declarations.
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class Isolate;
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class RawObject;
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// An object pointer visitor interface.
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class ObjectPointerVisitor {
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public:
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explicit ObjectPointerVisitor(Isolate* isolate) : isolate_(isolate) {}
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virtual ~ObjectPointerVisitor() {}
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Isolate* isolate() const { return isolate_; }
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// Range of pointers to visit 'first' <= pointer <= 'last'.
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virtual void VisitPointers(RawObject** first, RawObject** last) = 0;
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virtual bool visit_function_code() const { return true; }
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virtual GrowableArray<RawFunction*>* skipped_code_functions() {
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return NULL;
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}
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// len argument is the number of pointers to visit starting from 'p'.
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void VisitPointers(RawObject** p, intptr_t len) {
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VisitPointers(p, (p + len - 1));
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}
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void VisitPointer(RawObject** p) { VisitPointers(p , p); }
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private:
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Isolate* isolate_;
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DISALLOW_IMPLICIT_CONSTRUCTORS(ObjectPointerVisitor);
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};
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// An object visitor interface.
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class ObjectVisitor {
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public:
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explicit ObjectVisitor(Isolate* isolate) : isolate_(isolate) {}
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virtual ~ObjectVisitor() {}
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Isolate* isolate() const { return isolate_; }
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// Invoked for each object.
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virtual void VisitObject(RawObject* obj) = 0;
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private:
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Isolate* isolate_;
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DISALLOW_COPY_AND_ASSIGN(ObjectVisitor);
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};
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// An object finder visitor interface.
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class FindObjectVisitor {
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public:
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explicit FindObjectVisitor(Isolate* isolate) : isolate_(isolate) {}
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virtual ~FindObjectVisitor() {}
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// Allow to specify a address filter.
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virtual uword filter_addr() const { return 0; }
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bool VisitRange(uword begin_addr, uword end_addr) const {
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uword addr = filter_addr();
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return (addr == 0) || ((begin_addr <= addr) && (addr < end_addr));
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}
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// Check if object matches find condition.
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virtual bool FindObject(RawObject* obj) const = 0;
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private:
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Isolate* isolate_;
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DISALLOW_IMPLICIT_CONSTRUCTORS(FindObjectVisitor);
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};
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} // namespace dart
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#endif // VM_VISITOR_H_
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