win: make CrashpadInfo retrievable

util/mac/checked_mach_address_range.h

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #ifndef CRASHPAD_UTIL_MAC_CHECKED_MACH_ADDRESS_RANGE_H_
 #define CRASHPAD_UTIL_MAC_CHECKED_MACH_ADDRESS_RANGE_H_
 
 #include <mach/mach.h>
 
-#include "util/numeric/checked_range.h"
+#include "util/numeric/checked_address_range.h"
 
 namespace crashpad {
 
 //! \brief Ensures that a range, composed of a base and a size, does not
 //!     overflow the pointer type of the process it describes a range in.
 //!
 //! This class checks bases of type `mach_vm_address_t` and sizes of type
 //! `mach_vm_address_t` against a process whose pointer type is either 32 or 64
 //! bits wide.
 //!
 //! Aside from varying the overall range on the basis of a process’ pointer type
 //! width, this class functions very similarly to CheckedRange.
-class CheckedMachAddressRange {
- public:
-  //! \brief Initializes a default range.
-  //!
-  //! The default range has base 0, size 0, and appears to be from a 32-bit
-  //! process.
-  CheckedMachAddressRange();
-
-  //! \brief Initializes a range.
-  //!
-  //! See SetRange().
-  CheckedMachAddressRange(bool is_64_bit,
-                          mach_vm_address_t base,
-                          mach_vm_size_t size);
-
-  //! \brief Sets a range’s fields.
-  //!
-  //! \param[in] is_64_bit `true` if \a base and \a size refer to addresses in a
-  //!     64-bit process; `false` if they refer to addresses in a 32-bit
-  //!     process.
-  //! \param[in] base The range’s base address.
-  //! \param[in] size The range’s size.
-  void SetRange(bool is_64_bit, mach_vm_address_t base, mach_vm_size_t size);
-
-  //! \brief The range’s base address.
-  mach_vm_address_t Base() const;
-
-  //! \brief The range’s size.
-  mach_vm_size_t Size() const;
-
-  //! \brief The range’s end address (its base address plus its size).
-  mach_vm_address_t End() const;
-
-  //! \brief Returns the validity of the address range.
-  //!
-  //! \return `true` if the address range is valid, `false` otherwise.
-  //!
-  //! An address range is valid if its size can be converted to the address
-  //! range’s data type without data loss, and if its end (base plus size) can
-  //! be computed without overflowing its data type.
-  bool IsValid() const;
-
-  //! \brief Returns whether the address range contains another address.
-  //!
-  //! \param[in] value The (possibly) contained address.
-  //!
-  //! \return `true` if the address range contains \a value, `false` otherwise.
-  //!
-  //! An address range contains a value if the value is greater than or equal to
-  //! its base address, and less than its end address (base address plus size).
-  //!
-  //! This method must only be called if IsValid() would return `true`.
-  bool ContainsValue(const mach_vm_address_t value) const;
-
-  //! \brief Returns whether the address range contains another address range.
-  //!
-  //! \param[in] that The (possibly) contained address range.
-  //!
-  //! \return `true` if `this` address range, the containing address range,
-  //!     contains \a that, the contained address range. `false` otherwise.
-  //!
-  //! An address range contains another address range when the contained address
-  //! range’s base is greater than or equal to the containing address range’s
-  //! base, and the contained address range’s end is less than or equal to the
-  //! containing address range’s end.
-  //!
-  //! This method should only be called on two CheckedMachAddressRange objects
-  //! representing address ranges in the same process.
-  //!
-  //! This method must only be called if IsValid() would return `true` for both
-  //! CheckedMachAddressRange objects involved.
-  bool ContainsRange(const CheckedMachAddressRange& that) const;
-
- private:
-  // The field of the union that is expressed is determined by is_64_bit_.
-  union {
-    CheckedRange<uint32_t> range_32_;
-    CheckedRange<uint64_t> range_64_;
-  };
-
-  // Determines which field of the union is expressed.
-  bool is_64_bit_;
-
-  // Whether the base and size were valid for their data type when set. This is
-  // always true when is_64_bit_ is true because the underlying data types are
-  // 64 bits wide and there is no possibility for range and size to overflow.
-  // When is_64_bit_ is false, range_ok_ will be false if SetRange() was passed
-  // a base or size that overflowed the underlying 32-bit data type. This field
-  // is necessary because the interface exposes mach_vm_address_t and
-  // mach_vm_size_t uniformly, but these types are too wide for the underlying
-  // pointer and size types in 32-bit processes.
-  bool range_ok_;
-
-  DISALLOW_COPY_AND_ASSIGN(CheckedMachAddressRange);
-};
+using CheckedMachAddressRange =

[Mark Mentovai, 2015/04/30 20:58:35]

Cool!

+    CheckedAddressRangeGeneric<mach_vm_address_t, mach_vm_size_t>;
 
 }  // namespace crashpad
 
 #endif  // CRASHPAD_UTIL_MAC_CHECKED_MACH_ADDRESS_RANGE_H_