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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
// Copyright (c) 2006-2008 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 "chrome/common/ipc_message.h"
#include "base/logging.h"
#include "build/build_config.h"
#if defined(OS_POSIX)
#include "chrome/common/file_descriptor_set_posix.h"
#endif
#ifdef MOZ_TASK_TRACER
#include "GeckoTaskTracer.h"
#endif
#include "mozilla/Move.h"
#ifdef MOZ_TASK_TRACER
using namespace mozilla::tasktracer;
#endif
namespace IPC {
//------------------------------------------------------------------------------
Message::~Message() {
MOZ_COUNT_DTOR(IPC::Message);
}
Message::Message()
: Pickle(sizeof(Header)) {
MOZ_COUNT_CTOR(IPC::Message);
header()->routing = header()->type = header()->flags = 0;
#if defined(OS_POSIX)
header()->num_fds = 0;
#endif
#ifdef MOZ_TASK_TRACER
header()->source_event_id = 0;
header()->parent_task_id = 0;
header()->source_event_type = SourceEventType::Unknown;
#endif
InitLoggingVariables();
}
Message::Message(int32_t routing_id, msgid_t type, NestedLevel nestedLevel, PriorityValue priority,
MessageCompression compression, const char* const aName)
: Pickle(sizeof(Header)) {
MOZ_COUNT_CTOR(IPC::Message);
header()->routing = routing_id;
header()->type = type;
header()->flags = nestedLevel;
if (priority == HIGH_PRIORITY)
header()->flags |= PRIO_BIT;
if (compression == COMPRESSION_ENABLED)
header()->flags |= COMPRESS_BIT;
else if (compression == COMPRESSION_ALL)
header()->flags |= COMPRESSALL_BIT;
#if defined(OS_POSIX)
header()->num_fds = 0;
#endif
header()->interrupt_remote_stack_depth_guess = static_cast<uint32_t>(-1);
header()->interrupt_local_stack_depth = static_cast<uint32_t>(-1);
header()->seqno = 0;
#if defined(OS_MACOSX)
header()->cookie = 0;
#endif
#ifdef MOZ_TASK_TRACER
header()->source_event_id = 0;
header()->parent_task_id = 0;
header()->source_event_type = SourceEventType::Unknown;
#endif
InitLoggingVariables(aName);
}
Message::Message(const char* data, int data_len)
: Pickle(sizeof(Header), data, data_len)
{
MOZ_COUNT_CTOR(IPC::Message);
InitLoggingVariables();
}
Message::Message(Message&& other) : Pickle(mozilla::Move(other)) {
MOZ_COUNT_CTOR(IPC::Message);
InitLoggingVariables(other.name_);
#if defined(OS_POSIX)
file_descriptor_set_ = other.file_descriptor_set_.forget();
#endif
#ifdef MOZ_TASK_TRACER
header()->source_event_id = other.header()->source_event_id;
header()->parent_task_id = other.header()->parent_task_id;
header()->source_event_type = other.header()->source_event_type;
#endif
}
void Message::InitLoggingVariables(const char* const aName) {
name_ = aName;
}
Message& Message::operator=(Message&& other) {
*static_cast<Pickle*>(this) = mozilla::Move(other);
InitLoggingVariables(other.name_);
#if defined(OS_POSIX)
file_descriptor_set_.swap(other.file_descriptor_set_);
#endif
#ifdef MOZ_TASK_TRACER
std::swap(header()->source_event_id, other.header()->source_event_id);
std::swap(header()->parent_task_id, other.header()->parent_task_id);
std::swap(header()->source_event_type, other.header()->source_event_type);
#endif
return *this;
}
#if defined(OS_POSIX)
bool Message::WriteFileDescriptor(const base::FileDescriptor& descriptor) {
// We write the index of the descriptor so that we don't have to
// keep the current descriptor as extra decoding state when deserialising.
// Also, we rely on each file descriptor being accompanied by sizeof(int)
// bytes of data in the message. See the comment for input_cmsg_buf_.
WriteInt(file_descriptor_set()->size());
if (descriptor.auto_close) {
return file_descriptor_set()->AddAndAutoClose(descriptor.fd);
} else {
return file_descriptor_set()->Add(descriptor.fd);
}
}
bool Message::ReadFileDescriptor(PickleIterator* iter,
base::FileDescriptor* descriptor) const {
int descriptor_index;
if (!ReadInt(iter, &descriptor_index))
return false;
FileDescriptorSet* file_descriptor_set = file_descriptor_set_.get();
if (!file_descriptor_set)
return false;
descriptor->fd = file_descriptor_set->GetDescriptorAt(descriptor_index);
descriptor->auto_close = false;
return descriptor->fd >= 0;
}
void Message::EnsureFileDescriptorSet() {
if (file_descriptor_set_.get() == NULL)
file_descriptor_set_ = new FileDescriptorSet;
}
uint32_t Message::num_fds() const {
return file_descriptor_set() ? file_descriptor_set()->size() : 0;
}
#endif
} // namespace IPC
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