startupcache/StartupCacheUtils.h
author Nathan Froyd <froydnj@mozilla.com>
Thu, 10 Jan 2019 10:52:51 -0500
changeset 453268 1abd03bcbfa3520c8c0263606c792183ddaa073d
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
child 472056 e1993a1f09ac53cd1a04fdf6a87f8cad8e44f73e
permissions -rw-r--r--
Bug 1514044 - part 1 - macro-ify process enums, strings, and XRE functions; r=mccr8 Having this information all defined in a single header will make life easier if we ever add new process types.

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#ifndef nsStartupCacheUtils_h_
#define nsStartupCacheUtils_h_

#include "nsString.h"
#include "nsIStorageStream.h"
#include "nsIObjectInputStream.h"
#include "nsIObjectOutputStream.h"
#include "mozilla/UniquePtr.h"

class nsIURI;

namespace mozilla {
namespace scache {

nsresult NewObjectInputStreamFromBuffer(UniquePtr<char[]> buffer, uint32_t len,
                                        nsIObjectInputStream **stream);

// We can't retrieve the wrapped stream from the objectOutputStream later,
// so we return it here. We give callers in debug builds the option
// to wrap the outputstream in a debug stream, which will detect if
// non-singleton objects are written out multiple times during a serialization.
// This could cause them to be deserialized incorrectly (as multiple copies
// instead of references).
nsresult NewObjectOutputWrappedStorageStream(
    nsIObjectOutputStream **wrapperStream, nsIStorageStream **stream,
    bool wantDebugStream);

// Creates a buffer for storing the stream into the cache. The buffer is
// allocated with 'new []'.  After calling this function, the caller would
// typically call StartupCache::PutBuffer with the returned buffer.
nsresult NewBufferFromStorageStream(nsIStorageStream *storageStream,
                                    UniquePtr<char[]> *buffer, uint32_t *len);

nsresult ResolveURI(nsIURI *in, nsIURI **out);

nsresult PathifyURI(nsIURI *in, nsACString &out);
}  // namespace scache
}  // namespace mozilla

#endif  // nsStartupCacheUtils_h_