/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/* vim: set sw=4 ts=8 et tw=80 : */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "mozilla/devtools/HeapSnapshot.h"

#include "mozilla/devtools/HeapSnapshotTempFileHelperParent.h"

#include "mozilla/ErrorResult.h"

#include "private/pprio.h"

#include "nsIFile.h"

namespace mozilla {

namespace devtools {

using ipc::FileDescriptor;

static bool

openFileFailure(ErrorResult& rv,

                OpenHeapSnapshotTempFileResponse* outResponse)

{

    *outResponse = rv.StealNSResult();

    return true;

}

mozilla::ipc::IPCResult

HeapSnapshotTempFileHelperParent::RecvOpenHeapSnapshotTempFile(

    OpenHeapSnapshotTempFileResponse* outResponse)

{

    auto start = TimeStamp::Now();

    ErrorResult rv;

    nsAutoString filePath;

    nsAutoString snapshotId;

    nsCOMPtr<nsIFile> file = HeapSnapshot::CreateUniqueCoreDumpFile(rv,

                                                                    start,

                                                                    filePath,

                                                                    snapshotId);

    if (NS_WARN_IF(rv.Failed())) {

        if (!openFileFailure(rv, outResponse)) {

          return IPC_FAIL_NO_REASON(this);

        }

        return IPC_OK();

    }

    PRFileDesc* prfd;

    rv = file->OpenNSPRFileDesc(PR_WRONLY, 0, &prfd);

    if (NS_WARN_IF(rv.Failed())) {

        if (!openFileFailure(rv, outResponse)) {

          return IPC_FAIL_NO_REASON(this);

        }

        return IPC_OK();

    }

    FileDescriptor::PlatformHandleType handle =

        FileDescriptor::PlatformHandleType(PR_FileDesc2NativeHandle(prfd));

    FileDescriptor fd(handle);

    *outResponse = OpenedFile(filePath, snapshotId, fd);

    return IPC_OK();

}

} // namespace devtools

} // namespace mozilla