1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromeos/process_proxy/process_proxy_registry.h"
#include "base/bind.h"
namespace chromeos {
namespace {
const char kWatcherThreadName[] = "ProcessWatcherThread";
const char kStdoutOutputType[] = "stdout";
const char kExitOutputType[] = "exit";
const char* ProcessOutputTypeToString(ProcessOutputType type) {
switch (type) {
case PROCESS_OUTPUT_TYPE_OUT:
return kStdoutOutputType;
case PROCESS_OUTPUT_TYPE_EXIT:
return kExitOutputType;
default:
return NULL;
}
}
static base::LazyInstance<ProcessProxyRegistry> g_process_proxy_registry =
LAZY_INSTANCE_INITIALIZER;
} // namespace
ProcessProxyRegistry::ProcessProxyInfo::ProcessProxyInfo() {
}
ProcessProxyRegistry::ProcessProxyInfo::ProcessProxyInfo(
const ProcessProxyInfo& other) {
// This should be called with empty info only.
DCHECK(!other.proxy.get());
}
ProcessProxyRegistry::ProcessProxyInfo::~ProcessProxyInfo() {
}
ProcessProxyRegistry::ProcessProxyRegistry() {
}
ProcessProxyRegistry::~ProcessProxyRegistry() {
// TODO(tbarzic): Fix issue with ProcessProxyRegistry being destroyed
// on a different thread (it's a LazyInstance).
DetachFromThread();
ShutDown();
}
void ProcessProxyRegistry::ShutDown() {
// Close all proxies we own.
while (!proxy_map_.empty())
CloseProcess(proxy_map_.begin()->first);
if (watcher_thread_) {
watcher_thread_->Stop();
watcher_thread_.reset();
}
}
// static
ProcessProxyRegistry* ProcessProxyRegistry::Get() {
return g_process_proxy_registry.Pointer();
}
int ProcessProxyRegistry::OpenProcess(const std::string& command,
const OutputCallback& output_callback) {
DCHECK(CalledOnValidThread());
if (!EnsureWatcherThreadStarted())
return -1;
// Create and open new proxy.
scoped_refptr<ProcessProxy> proxy(new ProcessProxy());
// TODO(tbarzic): Use a random int as an id here instead of process pid.
int terminal_id = proxy->Open(command);
if (terminal_id < 0)
return -1;
// Kick off watcher.
// We can use Unretained because proxy will stop calling callback after it is
// closed, which is done before this object goes away.
if (!proxy->StartWatchingOutput(
watcher_thread_->task_runner(),
base::Bind(&ProcessProxyRegistry::OnProcessOutput,
base::Unretained(this), terminal_id))) {
proxy->Close();
return -1;
}
ProcessProxyInfo& info = proxy_map_[terminal_id];
info.proxy.swap(proxy);
info.callback = output_callback;
return terminal_id;
}
bool ProcessProxyRegistry::SendInput(int id, const std::string& data) {
DCHECK(CalledOnValidThread());
std::map<int, ProcessProxyInfo>::iterator it = proxy_map_.find(id);
if (it == proxy_map_.end())
return false;
return it->second.proxy->Write(data);
}
bool ProcessProxyRegistry::CloseProcess(int id) {
DCHECK(CalledOnValidThread());
std::map<int, ProcessProxyInfo>::iterator it = proxy_map_.find(id);
if (it == proxy_map_.end())
return false;
it->second.proxy->Close();
proxy_map_.erase(it);
return true;
}
bool ProcessProxyRegistry::OnTerminalResize(int id, int width, int height) {
DCHECK(CalledOnValidThread());
std::map<int, ProcessProxyInfo>::iterator it = proxy_map_.find(id);
if (it == proxy_map_.end())
return false;
return it->second.proxy->OnTerminalResize(width, height);
}
void ProcessProxyRegistry::AckOutput(int id) {
DCHECK(CalledOnValidThread());
std::map<int, ProcessProxyInfo>::iterator it = proxy_map_.find(id);
if (it == proxy_map_.end())
return;
it->second.proxy->AckOutput();
}
void ProcessProxyRegistry::OnProcessOutput(int id,
ProcessOutputType type,
const std::string& data) {
DCHECK(CalledOnValidThread());
const char* type_str = ProcessOutputTypeToString(type);
DCHECK(type_str);
std::map<int, ProcessProxyInfo>::iterator it = proxy_map_.find(id);
if (it == proxy_map_.end())
return;
it->second.callback.Run(id, std::string(type_str), data);
// Contact with the slave end of the terminal has been lost. We have to close
// the process.
if (type == PROCESS_OUTPUT_TYPE_EXIT)
CloseProcess(id);
}
bool ProcessProxyRegistry::EnsureWatcherThreadStarted() {
if (watcher_thread_.get())
return true;
// TODO(tbarzic): Change process output watcher to watch for fd readability on
// FILE thread, and move output reading to worker thread instead of
// spinning a new thread.
watcher_thread_.reset(new base::Thread(kWatcherThreadName));
return watcher_thread_->StartWithOptions(
base::Thread::Options(base::MessageLoop::TYPE_IO, 0));
}
} // namespace chromeos
|
