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87 lines
2.8 KiB
C++
87 lines
2.8 KiB
C++
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// Copyright 2014 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "util/mach/composite_mach_message_server.h"
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#include <algorithm>
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#include <utility>
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#include "base/logging.h"
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#include "util/mach/mach_message.h"
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namespace crashpad {
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CompositeMachMessageServer::CompositeMachMessageServer()
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: MachMessageServer::Interface(),
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handler_map_(),
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request_size_(sizeof(mach_msg_header_t)),
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reply_size_(sizeof(mig_reply_error_t)) {
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}
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CompositeMachMessageServer::~CompositeMachMessageServer() {
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}
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void CompositeMachMessageServer::AddHandler(
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MachMessageServer::Interface* handler) {
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// Other cycles would be invalid as well, but they aren’t currently checked.
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DCHECK_NE(handler, this);
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std::set<mach_msg_id_t> request_ids = handler->MachMessageServerRequestIDs();
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for (mach_msg_id_t request_id : request_ids) {
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std::pair<HandlerMap::const_iterator, bool> result =
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handler_map_.insert(std::make_pair(request_id, handler));
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CHECK(result.second) << "duplicate request ID " << request_id;
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}
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request_size_ =
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std::max(request_size_, handler->MachMessageServerRequestSize());
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reply_size_ = std::max(reply_size_, handler->MachMessageServerReplySize());
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}
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bool CompositeMachMessageServer::MachMessageServerFunction(
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const mach_msg_header_t* in,
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mach_msg_header_t* out,
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bool* destroy_complex_request) {
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HandlerMap::const_iterator iterator = handler_map_.find(in->msgh_id);
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if (iterator == handler_map_.end()) {
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// Do what MIG-generated server routines do when they can’t dispatch a
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// message.
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PrepareMIGReplyFromRequest(in, out);
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SetMIGReplyError(out, MIG_BAD_ID);
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return false;
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}
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MachMessageServer::Interface* handler = iterator->second;
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return handler->MachMessageServerFunction(in, out, destroy_complex_request);
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}
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std::set<mach_msg_id_t>
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CompositeMachMessageServer::MachMessageServerRequestIDs() {
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std::set<mach_msg_id_t> request_ids;
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for (const auto& entry : handler_map_) {
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request_ids.insert(entry.first);
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}
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return request_ids;
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}
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mach_msg_size_t CompositeMachMessageServer::MachMessageServerRequestSize() {
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return request_size_;
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}
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mach_msg_size_t CompositeMachMessageServer::MachMessageServerReplySize() {
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return reply_size_;
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}
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} // namespace crashpad
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