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/memory/shared_memory.h" 12 #include "base/synchronization/waitable_event.h" 13 #include "base/threading/thread.h" 14 #include "components/nacl/common/nacl_types.h" 15 #include "components/nacl/loader/nacl_trusted_listener.h" 16 #include "ipc/ipc_listener.h" 17 18 namespace base { 19 class MessageLoopProxy; 20 } 21 22 namespace IPC { 23 class SyncChannel; 24 class SyncMessageFilter; 25 } 26 27 // The NaClListener is an IPC channel listener that waits for a 28 // request to start a NaCl module. 29 class NaClListener : public IPC::Listener { 30 public: 31 NaClListener(); 32 virtual ~NaClListener(); 33 // Listen for a request to launch a NaCl module. 34 void Listen(); 35 36 bool Send(IPC::Message* msg); 37 38 #if defined(OS_LINUX) set_prereserved_sandbox_size(size_t prereserved_sandbox_size)39 void set_prereserved_sandbox_size(size_t prereserved_sandbox_size) { 40 prereserved_sandbox_size_ = prereserved_sandbox_size; 41 } 42 #endif 43 #if defined(OS_POSIX) set_number_of_cores(int number_of_cores)44 void set_number_of_cores(int number_of_cores) { 45 number_of_cores_ = number_of_cores; 46 } 47 #endif 48 crash_info_shmem_memory()49 void* crash_info_shmem_memory() const { return crash_info_shmem_->memory(); } 50 51 typedef base::Callback<void(IPC::PlatformFileForTransit, base::FilePath)> 52 ResolveFileTokenCallback; 53 void ResolveFileToken(uint64_t token_lo, 54 uint64_t token_hi, 55 ResolveFileTokenCallback cb); 56 void OnFileTokenResolved(uint64_t token_lo, 57 uint64_t token_hi, 58 IPC::PlatformFileForTransit ipc_fd, 59 base::FilePath file_path); 60 61 private: 62 virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE; 63 64 void OnStart(const nacl::NaClStartParams& params); 65 66 // A channel back to the browser. 67 scoped_ptr<IPC::SyncChannel> channel_; 68 69 // A filter that allows other threads to use the channel. 70 scoped_refptr<IPC::SyncMessageFilter> filter_; 71 72 base::WaitableEvent shutdown_event_; 73 base::Thread io_thread_; 74 75 #if defined(OS_LINUX) 76 size_t prereserved_sandbox_size_; 77 #endif 78 #if defined(OS_POSIX) 79 // The outer sandbox on Linux and OSX prevents 80 // sysconf(_SC_NPROCESSORS) from working; in Windows, there are no 81 // problems with invoking GetSystemInfo. Therefore, only in 82 // OS_POSIX do we need to supply the number of cores into the 83 // NaClChromeMainArgs object. 84 int number_of_cores_; 85 #endif 86 87 scoped_ptr<base::SharedMemory> crash_info_shmem_; 88 89 scoped_refptr<NaClTrustedListener> trusted_listener_; 90 91 ResolveFileTokenCallback resolved_cb_; 92 93 // Used to identify what thread we're on. 94 base::MessageLoop* main_loop_; 95 96 DISALLOW_COPY_AND_ASSIGN(NaClListener); 97 }; 98 99 #endif // CHROME_NACL_NACL_LISTENER_H_ 100