| // Copyright 2018 The Bazel 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. |
| |
| #ifdef _WIN32 |
| |
| #include "src/tools/singlejar/port.h" |
| |
| #ifndef WIN32_LEAN_AND_MEAN |
| #define WIN32_LEAN_AND_MEAN |
| #endif |
| #include <windows.h> |
| |
| ssize_t pread(int fd, void *buf, size_t count, off64_t offset) { |
| DWORD ret = -1; |
| HANDLE hFile = reinterpret_cast<HANDLE>(_get_osfhandle(fd)); |
| if (hFile) { |
| OVERLAPPED overlap; |
| memset(&overlap, 0, sizeof(OVERLAPPED)); |
| overlap.Offset = offset; |
| if (!::ReadFile(hFile, buf, count, &ret, &overlap)) { |
| // For this simple implementation, we don't update errno. |
| // Just return -1 as error. |
| return -1; |
| } |
| } |
| return ret; |
| } |
| |
| #endif // _WIN32 |