1 // Copyright 2013 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 #ifndef CHROME_NACL_NACL_LISTENER_H_ 6 #define CHROME_NACL_NACL_LISTENER_H_ 7 8 #include <vector> 9 10 #include "base/memory/scoped_ptr.h" 11 #include "base/synchronization/waitable_event.h" 12 #include "base/threading/thread.h" 13 #include "components/nacl/common/nacl_types.h" 14 #include "components/nacl/loader/nacl_trusted_listener.h" 15 #include "ipc/ipc_listener.h" 16 17 namespace base { 18 class MessageLoopProxy; 19 } 20 21 namespace IPC { 22 class SyncChannel; 23 class SyncMessageFilter; 24 } 25 26 // The NaClListener is an IPC channel listener that waits for a 27 // request to start a NaCl module. 28 class NaClListener : public IPC::Listener { 29 public: 30 NaClListener(); 31 virtual ~NaClListener(); 32 // Listen for a request to launch a NaCl module. 33 void Listen(); 34 35 bool Send(IPC::Message* msg); 36 37 void set_uses_nonsfi_mode(bool uses_nonsfi_mode) { 38 uses_nonsfi_mode_ = uses_nonsfi_mode; 39 } 40 #if defined(OS_LINUX) 41 void set_prereserved_sandbox_size(size_t prereserved_sandbox_size) { 42 prereserved_sandbox_size_ = prereserved_sandbox_size; 43 } 44 #endif 45 #if defined(OS_POSIX) 46 void set_number_of_cores(int number_of_cores) { 47 number_of_cores_ = number_of_cores; 48 } 49 #endif 50 51 private: 52 virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE; 53 54 void OnStart(const nacl::NaClStartParams& params); 55 56 // Non-SFI version of OnStart(). 57 void StartNonSfi(const nacl::NaClStartParams& params); 58 59 IPC::ChannelHandle CreateTrustedListener( 60 base::MessageLoopProxy* message_loop_proxy, 61 base::WaitableEvent* shutdown_event); 62 63 // A channel back to the browser. 64 scoped_ptr<IPC::SyncChannel> channel_; 65 66 // A filter that allows other threads to use the channel. 67 scoped_refptr<IPC::SyncMessageFilter> filter_; 68 69 base::WaitableEvent shutdown_event_; 70 base::Thread io_thread_; 71 72 bool uses_nonsfi_mode_; 73 #if defined(OS_LINUX) 74 size_t prereserved_sandbox_size_; 75 #endif 76 #if defined(OS_POSIX) 77 // The outer sandbox on Linux and OSX prevents 78 // sysconf(_SC_NPROCESSORS) from working; in Windows, there are no 79 // problems with invoking GetSystemInfo. Therefore, only in 80 // OS_POSIX do we need to supply the number of cores into the 81 // NaClChromeMainArgs object. 82 int number_of_cores_; 83 #endif 84 85 scoped_refptr<NaClTrustedListener> trusted_listener_; 86 87 // Used to identify what thread we're on. 88 base::MessageLoop* main_loop_; 89 90 DISALLOW_COPY_AND_ASSIGN(NaClListener); 91 }; 92 93 #endif // CHROME_NACL_NACL_LISTENER_H_ 94