| /* |
| * Copyright (C) 2014-2015 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "NetworkCacheData.h" |
| |
| #include "SharedMemory.h" |
| #include <dispatch/dispatch.h> |
| #include <sys/mman.h> |
| #include <sys/stat.h> |
| |
| namespace WebKit { |
| namespace NetworkCache { |
| |
| Data::Data(const uint8_t* data, size_t size) |
| : m_dispatchData(adoptOSObject(dispatch_data_create(data, size, nullptr, DISPATCH_DATA_DESTRUCTOR_DEFAULT))) |
| , m_size(size) |
| { |
| } |
| |
| Data::Data(OSObjectPtr<dispatch_data_t>&& dispatchData, Backing backing) |
| : m_dispatchData(WTFMove(dispatchData)) |
| , m_size(m_dispatchData ? dispatch_data_get_size(m_dispatchData.get()) : 0) |
| , m_isMap(m_size && backing == Backing::Map) |
| { |
| } |
| |
| Data Data::empty() |
| { |
| return { OSObjectPtr<dispatch_data_t> { dispatch_data_empty } }; |
| } |
| |
| const uint8_t* Data::data() const |
| { |
| if (!m_data && m_dispatchData) { |
| const void* data; |
| size_t size; |
| m_dispatchData = adoptOSObject(dispatch_data_create_map(m_dispatchData.get(), &data, &size)); |
| ASSERT(size == m_size); |
| m_data = static_cast<const uint8_t*>(data); |
| } |
| return m_data; |
| } |
| |
| bool Data::isNull() const |
| { |
| return !m_dispatchData; |
| } |
| |
| bool Data::apply(const Function<bool (const uint8_t*, size_t)>& applier) const |
| { |
| if (!m_size) |
| return false; |
| return dispatch_data_apply(m_dispatchData.get(), [&applier](dispatch_data_t, size_t, const void* data, size_t size) { |
| return applier(static_cast<const uint8_t*>(data), size); |
| }); |
| } |
| |
| Data Data::subrange(size_t offset, size_t size) const |
| { |
| return { adoptOSObject(dispatch_data_create_subrange(dispatchData(), offset, size)) }; |
| } |
| |
| Data concatenate(const Data& a, const Data& b) |
| { |
| if (a.isNull()) |
| return b; |
| if (b.isNull()) |
| return a; |
| return { adoptOSObject(dispatch_data_create_concat(a.dispatchData(), b.dispatchData())) }; |
| } |
| |
| Data Data::adoptMap(void* map, size_t size, int fd) |
| { |
| ASSERT(map); |
| ASSERT(map != MAP_FAILED); |
| close(fd); |
| auto bodyMap = adoptOSObject(dispatch_data_create(map, size, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), [map, size] { |
| munmap(map, size); |
| })); |
| return { WTFMove(bodyMap), Data::Backing::Map }; |
| } |
| |
| RefPtr<SharedMemory> Data::tryCreateSharedMemory() const |
| { |
| if (isNull() || !isMap()) |
| return nullptr; |
| |
| return SharedMemory::wrapMap(const_cast<uint8_t*>(data()), m_size, SharedMemory::Protection::ReadOnly); |
| } |
| |
| } |
| } |