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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "mojo/common/test/test_utils.h"
#include <windows.h>
#include "mojo/system/embedder/platform_handle.h"
namespace mojo {
namespace test {
bool BlockingWrite(const embedder::PlatformHandle& handle,
const void* buffer,
size_t bytes_to_write,
size_t* bytes_written) {
OVERLAPPED overlapped = { 0 };
DWORD bytes_written_dword = 0;
if (!WriteFile(handle.handle, buffer, static_cast<DWORD>(bytes_to_write),
&bytes_written_dword, &overlapped)) {
if (GetLastError() != ERROR_IO_PENDING ||
!GetOverlappedResult(handle.handle, &overlapped, &bytes_written_dword,
TRUE)) {
return false;
}
}
*bytes_written = bytes_written_dword;
return true;
}
bool BlockingRead(const embedder::PlatformHandle& handle,
void* buffer,
size_t buffer_size,
size_t* bytes_read) {
OVERLAPPED overlapped = { 0 };
DWORD bytes_read_dword = 0;
if (!ReadFile(handle.handle, buffer, static_cast<DWORD>(buffer_size),
&bytes_read_dword, &overlapped)) {
if (GetLastError() != ERROR_IO_PENDING ||
!GetOverlappedResult(handle.handle, &overlapped, &bytes_read_dword,
TRUE)) {
return false;
}
}
*bytes_read = bytes_read_dword;
return true;
}
bool NonBlockingRead(const embedder::PlatformHandle& handle,
void* buffer,
size_t buffer_size,
size_t* bytes_read) {
OVERLAPPED overlapped = { 0 };
DWORD bytes_read_dword = 0;
if (!ReadFile(handle.handle, buffer, static_cast<DWORD>(buffer_size),
&bytes_read_dword, &overlapped)) {
if (GetLastError() != ERROR_IO_PENDING)
return false;
CancelIo(handle.handle);
if (!GetOverlappedResult(handle.handle, &overlapped, &bytes_read_dword,
TRUE)) {
*bytes_read = 0;
return true;
}
}
*bytes_read = bytes_read_dword;
return true;
}
} // namespace test
} // namespace mojo
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