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113 lines
3.2 KiB
C++
113 lines
3.2 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "mojo/edk/test/test_utils.h"
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#include <windows.h>
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#include <fcntl.h>
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#include <io.h>
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#include <string.h>
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namespace mojo {
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namespace test {
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bool BlockingWrite(const embedder::PlatformHandle& handle,
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const void* buffer,
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size_t bytes_to_write,
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size_t* bytes_written) {
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OVERLAPPED overlapped = {0};
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DWORD bytes_written_dword = 0;
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if (!WriteFile(handle.handle, buffer, static_cast<DWORD>(bytes_to_write),
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&bytes_written_dword, &overlapped)) {
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if (GetLastError() != ERROR_IO_PENDING ||
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!GetOverlappedResult(handle.handle, &overlapped, &bytes_written_dword,
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TRUE)) {
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return false;
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}
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}
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*bytes_written = bytes_written_dword;
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return true;
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}
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bool BlockingRead(const embedder::PlatformHandle& handle,
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void* buffer,
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size_t buffer_size,
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size_t* bytes_read) {
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OVERLAPPED overlapped = {0};
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DWORD bytes_read_dword = 0;
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if (!ReadFile(handle.handle, buffer, static_cast<DWORD>(buffer_size),
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&bytes_read_dword, &overlapped)) {
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if (GetLastError() != ERROR_IO_PENDING ||
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!GetOverlappedResult(handle.handle, &overlapped, &bytes_read_dword,
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TRUE)) {
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return false;
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}
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}
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*bytes_read = bytes_read_dword;
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return true;
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}
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bool NonBlockingRead(const embedder::PlatformHandle& handle,
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void* buffer,
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size_t buffer_size,
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size_t* bytes_read) {
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OVERLAPPED overlapped = {0};
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DWORD bytes_read_dword = 0;
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if (!ReadFile(handle.handle, buffer, static_cast<DWORD>(buffer_size),
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&bytes_read_dword, &overlapped)) {
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if (GetLastError() != ERROR_IO_PENDING)
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return false;
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CancelIo(handle.handle);
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if (!GetOverlappedResult(handle.handle, &overlapped, &bytes_read_dword,
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TRUE)) {
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*bytes_read = 0;
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return true;
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}
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}
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*bytes_read = bytes_read_dword;
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return true;
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}
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embedder::ScopedPlatformHandle PlatformHandleFromFILE(base::ScopedFILE fp) {
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CHECK(fp);
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HANDLE rv = INVALID_HANDLE_VALUE;
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PCHECK(DuplicateHandle(
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GetCurrentProcess(),
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reinterpret_cast<HANDLE>(_get_osfhandle(_fileno(fp.get()))),
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GetCurrentProcess(), &rv, 0, TRUE, DUPLICATE_SAME_ACCESS))
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<< "DuplicateHandle";
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return embedder::ScopedPlatformHandle(embedder::PlatformHandle(rv));
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}
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base::ScopedFILE FILEFromPlatformHandle(embedder::ScopedPlatformHandle h,
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const char* mode) {
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CHECK(h.is_valid());
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// Microsoft's documentation for |_open_osfhandle()| only discusses these
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// flags (and |_O_WTEXT|). Hmmm.
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int flags = 0;
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if (strchr(mode, 'a'))
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flags |= _O_APPEND;
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if (strchr(mode, 'r'))
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flags |= _O_RDONLY;
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if (strchr(mode, 't'))
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flags |= _O_TEXT;
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base::ScopedFILE rv(_fdopen(
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_open_osfhandle(reinterpret_cast<intptr_t>(h.release().handle), flags),
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mode));
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PCHECK(rv) << "_fdopen";
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return rv.Pass();
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}
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} // namespace test
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} // namespace mojo
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