components/nacl/browser/nacl_broker_service_win.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/nacl/browser/nacl_broker_service_win.h"
   6
   7 #include "components/nacl/browser/nacl_process_host.h"
   8 #include "components/nacl/common/nacl_process_type.h"
   9 #include "content/public/browser/browser_child_process_host_iterator.h"
  10
  11 using content::BrowserChildProcessHostIterator;
  12
  13 namespace nacl {
  14
  15 NaClBrokerService* NaClBrokerService::GetInstance() {
  16   return Singleton<NaClBrokerService>::get();
  17 }
  18
  19 NaClBrokerService::NaClBrokerService()
  20     : loaders_running_(0) {
  21 }
  22
  23 bool NaClBrokerService::StartBroker() {
  24   NaClBrokerHost* broker_host = new NaClBrokerHost;
  25   if (!broker_host->Init()) {
  26     delete broker_host;
  27     return false;
  28   }
  29   return true;
  30 }
  31
  32 bool NaClBrokerService::LaunchLoader(
  33     base::WeakPtr<nacl::NaClProcessHost> nacl_process_host,
  34     const std::string& loader_channel_id) {
  35   // Add task to the list
  36   pending_launches_[loader_channel_id] = nacl_process_host;
  37   NaClBrokerHost* broker_host = GetBrokerHost();
  38
  39   if (!broker_host) {
  40     if (!StartBroker())
  41       return false;
  42     broker_host = GetBrokerHost();
  43   }
  44   broker_host->LaunchLoader(loader_channel_id);
  45
  46   return true;
  47 }
  48
  49 void NaClBrokerService::OnLoaderLaunched(const std::string& channel_id,
  50                                          base::ProcessHandle handle) {
  51   PendingLaunchesMap::iterator it = pending_launches_.find(channel_id);
  52   if (pending_launches_.end() == it)
  53     NOTREACHED();
  54
  55   NaClProcessHost* client = it->second.get();
  56   if (client)
  57     client->OnProcessLaunchedByBroker(handle);
  58   pending_launches_.erase(it);
  59   ++loaders_running_;
  60 }
  61
  62 void NaClBrokerService::OnLoaderDied() {
  63   DCHECK(loaders_running_ > 0);
  64   --loaders_running_;
  65   // Stop the broker only if there are no loaders running or being launched.
  66   NaClBrokerHost* broker_host = GetBrokerHost();
  67   if (loaders_running_ + pending_launches_.size() == 0 && broker_host != NULL) {
  68     broker_host->StopBroker();
  69   }
  70 }
  71
  72 bool NaClBrokerService::LaunchDebugExceptionHandler(
  73     base::WeakPtr<NaClProcessHost> nacl_process_host, int32 pid,
  74     base::ProcessHandle process_handle, const std::string& startup_info) {
  75   pending_debuggers_[pid] = nacl_process_host;
  76   NaClBrokerHost* broker_host = GetBrokerHost();
  77   if (!broker_host)
  78     return false;
  79   return broker_host->LaunchDebugExceptionHandler(pid, process_handle,
  80                                                   startup_info);
  81 }
  82
  83 void NaClBrokerService::OnDebugExceptionHandlerLaunched(int32 pid,
  84                                                         bool success) {
  85   PendingDebugExceptionHandlersMap::iterator it = pending_debuggers_.find(pid);
  86   if (pending_debuggers_.end() == it)
  87     NOTREACHED();
  88
  89   NaClProcessHost* client = it->second.get();
  90   if (client)
  91     client->OnDebugExceptionHandlerLaunchedByBroker(success);
  92   pending_debuggers_.erase(it);
  93 }
  94
  95 NaClBrokerHost* NaClBrokerService::GetBrokerHost() {
  96   BrowserChildProcessHostIterator iter(PROCESS_TYPE_NACL_BROKER);
  97   while (!iter.Done()) {
  98     NaClBrokerHost* host = static_cast<NaClBrokerHost*>(iter.GetDelegate());
  99     if (!host->IsTerminating())
 100       return host;
 101     ++iter;
 102   }
 103   return NULL;
 104 }
 105
 106 }  // namespace nacl