1 // Copyright 2015 The Crashpad Authors. All rights reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //     http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #include "util/win/handle.h"
16 
17 #include <stdint.h>
18 
19 #include "base/numerics/safe_conversions.h"
20 #include "util/misc/from_pointer_cast.h"
21 
22 namespace crashpad {
23 
24 // These functions use “int” for the 32-bit integer handle type because
25 // sign-extension needs to work correctly. INVALID_HANDLE_VALUE is defined as
26 // ((HANDLE)(LONG_PTR)-1), and this needs to round-trip through an integer and
27 // back to the same HANDLE value.
28 
HandleToInt(HANDLE handle)29 int HandleToInt(HANDLE handle) {
30   return FromPointerCast<int>(handle);
31 }
32 
IntToHandle(int handle_int)33 HANDLE IntToHandle(int handle_int) {
34   return reinterpret_cast<HANDLE>(static_cast<intptr_t>(handle_int));
35 }
36 
37 }  // namespace crashpad
38