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1 // Copyright 2015 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/crash/content/browser/crash_micro_dump_manager_android.h" | |
6 | |
7 #include <unistd.h> | |
8 | |
9 #include "base/bind.h" | |
10 #include "base/logging.h" | |
11 #include "content/public/browser/browser_thread.h" | |
12 #include "content/public/browser/child_process_data.h" | |
13 #include "content/public/browser/notification_service.h" | |
14 #include "content/public/browser/notification_types.h" | |
15 #include "content/public/browser/render_process_host.h" | |
16 | |
17 using content::BrowserThread; | |
18 | |
19 namespace breakpad { | |
20 | |
21 // static | |
22 CrashMicroDumpManager* CrashMicroDumpManager::GetInstance() { | |
23 return base::Singleton<CrashMicroDumpManager>::get(); | |
24 } | |
25 | |
26 CrashMicroDumpManager::CrashMicroDumpManager() : weak_factory_(this) { | |
27 DCHECK_CURRENTLY_ON(BrowserThread::UI); | |
28 | |
29 notification_registrar_.Add(this, | |
30 content::NOTIFICATION_RENDERER_PROCESS_TERMINATED, | |
31 content::NotificationService::AllSources()); | |
32 notification_registrar_.Add(this, | |
33 content::NOTIFICATION_RENDERER_PROCESS_CLOSED, | |
34 content::NotificationService::AllSources()); | |
35 } | |
36 | |
37 CrashMicroDumpManager::~CrashMicroDumpManager() { | |
38 base::AutoLock auto_lock(child_process_id_to_pipe_lock_); | |
39 child_process_id_to_pipe_.clear(); | |
40 } | |
41 | |
42 base::ScopedFD CrashMicroDumpManager::CreateCrashInfoChannel( | |
43 int child_process_id) { | |
44 DCHECK_CURRENTLY_ON(BrowserThread::PROCESS_LAUNCHER); | |
45 std::unique_ptr<base::SyncSocket> local_pipe(new base::SyncSocket()); | |
46 std::unique_ptr<base::SyncSocket> child_pipe(new base::SyncSocket()); | |
47 if (!base::SyncSocket::CreatePair(local_pipe.get(), child_pipe.get())) | |
48 return base::ScopedFD(); | |
49 { | |
50 base::AutoLock auto_lock(child_process_id_to_pipe_lock_); | |
51 DCHECK(!ContainsKey(child_process_id_to_pipe_, child_process_id)); | |
52 child_process_id_to_pipe_[child_process_id] = std::move(local_pipe); | |
53 } | |
54 return base::ScopedFD(dup(child_pipe->handle())); | |
55 } | |
56 | |
57 void CrashMicroDumpManager::HandleChildTerminationOnFileThread( | |
58 int child_process_id, | |
59 base::TerminationStatus termination_status) { | |
60 DCHECK_CURRENTLY_ON(BrowserThread::FILE); | |
61 | |
62 std::unique_ptr<base::SyncSocket> pipe; | |
63 { | |
64 base::AutoLock auto_lock(child_process_id_to_pipe_lock_); | |
65 const auto& iter = child_process_id_to_pipe_.find(child_process_id); | |
66 if (iter == child_process_id_to_pipe_.end()) { | |
67 // We might get a NOTIFICATION_RENDERER_PROCESS_TERMINATED and a | |
68 // NOTIFICATION_RENDERER_PROCESS_CLOSED. | |
69 return; | |
70 } | |
71 pipe = std::move(iter->second); | |
72 child_process_id_to_pipe_.erase(iter); | |
73 } | |
74 DCHECK(pipe->handle() != base::SyncSocket::kInvalidHandle); | |
75 | |
76 if (termination_status == base::TERMINATION_STATUS_NORMAL_TERMINATION) | |
77 return; | |
78 if (pipe->Peek() >= sizeof(int)) { | |
79 int exit_code; | |
80 pipe->Receive(&exit_code, sizeof(exit_code)); | |
81 LOG(FATAL) << "Renderer process crash detected (code " << exit_code | |
82 << "). Terminating browser."; | |
83 } else { | |
84 // The child process hasn't written anything into the pipe. This implies | |
85 // that it was terminated via SIGKILL by the low memory killer, and thus we | |
86 // need to perform a clean exit. | |
87 exit(0); | |
88 } | |
89 } | |
90 | |
91 void CrashMicroDumpManager::Observe( | |
92 int type, | |
93 const content::NotificationSource& source, | |
94 const content::NotificationDetails& details) { | |
95 content::RenderProcessHost* rph = | |
96 content::Source<content::RenderProcessHost>(source).ptr(); | |
97 // In case of a normal termination we just need to close the pipe_fd we kept | |
98 // open. | |
99 base::TerminationStatus termination_status = | |
100 base::TERMINATION_STATUS_NORMAL_TERMINATION; | |
101 switch (type) { | |
102 case content::NOTIFICATION_RENDERER_PROCESS_TERMINATED: { | |
103 // NOTIFICATION_RENDERER_PROCESS_TERMINATED is sent when the renderer | |
104 // process is cleanly shutdown. | |
105 break; | |
106 } | |
107 case content::NOTIFICATION_RENDERER_PROCESS_CLOSED: { | |
108 // Android fast shutdowns is a known case where the renderer is | |
109 // intentionally killed when we are done with it. | |
110 if (!rph->FastShutdownStarted()) { | |
111 content::RenderProcessHost::RendererClosedDetails* process_details = | |
112 content::Details<content::RenderProcessHost::RendererClosedDetails>( | |
113 details).ptr(); | |
114 termination_status = process_details->status; | |
115 } | |
116 break; | |
117 } | |
118 default: | |
119 NOTREACHED(); | |
120 return; | |
121 } | |
122 BrowserThread::PostTask( | |
123 BrowserThread::FILE, FROM_HERE, | |
124 base::Bind(&CrashMicroDumpManager::HandleChildTerminationOnFileThread, | |
125 weak_factory_.GetWeakPtr(), rph->GetID(), | |
126 termination_status)); | |
127 } | |
128 | |
129 } // namespace breakpad | |
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