87 lines
2.1 KiB
C++
87 lines
2.1 KiB
C++
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/devtools/FileDescriptorOutputStream.h"
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#include "private/pprio.h"
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namespace mozilla {
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namespace devtools {
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/* static */ already_AddRefed<FileDescriptorOutputStream>
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FileDescriptorOutputStream::Create(const ipc::FileDescriptor& fileDescriptor)
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{
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if (NS_WARN_IF(!fileDescriptor.IsValid()))
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return nullptr;
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auto rawFD = fileDescriptor.ClonePlatformHandle();
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PRFileDesc* prfd = PR_ImportFile(PROsfd(rawFD.release()));
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if (NS_WARN_IF(!prfd))
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return nullptr;
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RefPtr<FileDescriptorOutputStream> stream = new FileDescriptorOutputStream(prfd);
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return stream.forget();
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}
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NS_IMPL_ISUPPORTS(FileDescriptorOutputStream, nsIOutputStream);
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NS_IMETHODIMP
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FileDescriptorOutputStream::Close()
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{
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// Repeatedly closing is idempotent.
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if (!fd)
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return NS_OK;
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if (PR_Close(fd) != PR_SUCCESS)
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return NS_ERROR_FAILURE;
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fd = nullptr;
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return NS_OK;
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}
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NS_IMETHODIMP
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FileDescriptorOutputStream::Write(const char* buf, uint32_t count, uint32_t* retval)
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{
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if (NS_WARN_IF(!fd))
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return NS_ERROR_FAILURE;
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auto written = PR_Write(fd, buf, count);
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if (written < 0)
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return NS_ERROR_FAILURE;
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*retval = written;
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return NS_OK;
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}
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NS_IMETHODIMP
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FileDescriptorOutputStream::Flush()
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{
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if (NS_WARN_IF(!fd))
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return NS_ERROR_FAILURE;
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return PR_Sync(fd) == PR_SUCCESS ? NS_OK : NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP
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FileDescriptorOutputStream::WriteFrom(nsIInputStream* fromStream, uint32_t count,
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uint32_t* retval)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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FileDescriptorOutputStream::WriteSegments(nsReadSegmentFun reader, void* closure,
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uint32_t count, uint32_t* retval)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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FileDescriptorOutputStream::IsNonBlocking(bool* retval)
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{
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*retval = false;
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return NS_OK;
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}
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} // namespace devtools
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} // namespace mozilla
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