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| 1 // Copyright 2016 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 "android_webview/browser/aw_browser_terminator.h" |
| 6 |
| 7 #include <unistd.h> |
| 8 |
| 9 #include "android_webview/common/aw_descriptors.h" |
| 10 #include "base/bind.h" |
| 11 #include "base/logging.h" |
| 12 #include "base/stl_util.h" |
| 13 #include "base/sync_socket.h" |
| 14 #include "content/public/browser/browser_thread.h" |
| 15 #include "content/public/browser/child_process_data.h" |
| 16 #include "content/public/browser/notification_service.h" |
| 17 #include "content/public/browser/notification_types.h" |
| 18 #include "content/public/browser/render_process_host.h" |
| 19 |
| 20 using content::BrowserThread; |
| 21 |
| 22 namespace android_webview { |
| 23 |
| 24 AwBrowserTerminator::AwBrowserTerminator() {} |
| 25 |
| 26 AwBrowserTerminator::~AwBrowserTerminator() {} |
| 27 |
| 28 void AwBrowserTerminator::OnChildStart(int child_process_id, |
| 29 content::FileDescriptorInfo* mappings) { |
| 30 DCHECK_CURRENTLY_ON(content::BrowserThread::PROCESS_LAUNCHER); |
| 31 |
| 32 base::AutoLock auto_lock(child_process_id_to_pipe_lock_); |
| 33 DCHECK(!ContainsKey(child_process_id_to_pipe_, child_process_id)); |
| 34 |
| 35 auto local_pipe = base::MakeUnique<base::SyncSocket>(); |
| 36 auto child_pipe = base::MakeUnique<base::SyncSocket>(); |
| 37 if (base::SyncSocket::CreatePair(local_pipe.get(), child_pipe.get())) { |
| 38 child_process_id_to_pipe_[child_process_id] = std::move(local_pipe); |
| 39 mappings->Transfer(kAndroidWebViewCrashSignalDescriptor, |
| 40 base::ScopedFD(dup(child_pipe->handle()))); |
| 41 } |
| 42 } |
| 43 |
| 44 void AwBrowserTerminator::ProcessTerminationStatus( |
| 45 std::unique_ptr<base::SyncSocket> pipe) { |
| 46 if (pipe->Peek() >= sizeof(int)) { |
| 47 int exit_code; |
| 48 pipe->Receive(&exit_code, sizeof(exit_code)); |
| 49 LOG(FATAL) << "Renderer process crash detected (code " << exit_code |
| 50 << "). Terminating browser."; |
| 51 } else { |
| 52 // The child process hasn't written anything into the pipe. This implies |
| 53 // that it was terminated via SIGKILL by the low memory killer, and thus we |
| 54 // need to perform a clean exit. |
| 55 exit(0); |
| 56 } |
| 57 } |
| 58 |
| 59 void AwBrowserTerminator::OnChildExit( |
| 60 int child_process_id, |
| 61 base::ProcessHandle pid, |
| 62 content::ProcessType process_type, |
| 63 base::TerminationStatus termination_status, |
| 64 base::android::ApplicationState app_state) { |
| 65 std::unique_ptr<base::SyncSocket> pipe; |
| 66 |
| 67 { |
| 68 base::AutoLock auto_lock(child_process_id_to_pipe_lock_); |
| 69 const auto& iter = child_process_id_to_pipe_.find(child_process_id); |
| 70 if (iter == child_process_id_to_pipe_.end()) { |
| 71 // We might get a NOTIFICATION_RENDERER_PROCESS_TERMINATED and a |
| 72 // NOTIFICATION_RENDERER_PROCESS_CLOSED. |
| 73 return; |
| 74 } |
| 75 pipe = std::move(iter->second); |
| 76 child_process_id_to_pipe_.erase(iter); |
| 77 } |
| 78 if (termination_status == base::TERMINATION_STATUS_NORMAL_TERMINATION) |
| 79 return; |
| 80 DCHECK(pipe->handle() != base::SyncSocket::kInvalidHandle); |
| 81 BrowserThread::PostTask( |
| 82 BrowserThread::FILE, FROM_HERE, |
| 83 base::Bind(&AwBrowserTerminator::ProcessTerminationStatus, |
| 84 base::Passed(std::move(pipe)))); |
| 85 } |
| 86 |
| 87 } // namespace breakpad |
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