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
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
const { dumpn } = require("resource://devtools/shared/DevToolsUtils.js");
const EventEmitter = require("resource://devtools/shared/event-emitter.js");
const {
getFileForBinary,
} = require("resource://devtools/client/shared/remote-debugging/adb/adb-binary.js");
const { setTimeout } = ChromeUtils.importESModule(
"resource://gre/modules/Timer.sys.mjs"
);
loader.lazyRequireGetter(
this,
"runCommand",
"resource://devtools/client/shared/remote-debugging/adb/commands/index.js",
true
);
loader.lazyRequireGetter(
this,
"check",
"resource://devtools/client/shared/remote-debugging/adb/adb-running-checker.js",
true
);
// Waits until a predicate returns true or re-tries the predicate calls
// |retry| times, we wait for 100ms between each calls.
async function waitUntil(predicate, retry = 20) {
let count = 0;
while (count++ < retry) {
if (await predicate()) {
return true;
}
// Wait for 100 milliseconds.
await new Promise(resolve => setTimeout(resolve, 100));
}
// Timed out after trying too many times.
return false;
}
// Class representing the ADB process.
class AdbProcess extends EventEmitter {
constructor() {
super();
this._ready = false;
this._didRunInitially = false;
}
get ready() {
return this._ready;
}
_getAdbFile() {
if (this._adbFilePromise) {
return this._adbFilePromise;
}
this._adbFilePromise = getFileForBinary();
return this._adbFilePromise;
}
async _runProcess(process, params) {
return new Promise((resolve, reject) => {
process.runAsync(
params,
params.length,
{
observe(subject, topic) {
switch (topic) {
case "process-finished":
resolve();
break;
case "process-failed":
reject();
break;
}
},
},
false
);
});
}
// We startup by launching adb in server mode, and setting
// the tcp socket preference to |true|
async start() {
const onSuccessfulStart = () => {
this._ready = true;
this.emit("adb-ready");
};
const isAdbRunning = await check();
if (isAdbRunning) {
dumpn("Found ADB process running, not restarting");
onSuccessfulStart();
return;
}
dumpn("Didn't find ADB process running, restarting");
this._didRunInitially = true;
const process = Cc["@mozilla.org/process/util;1"].createInstance(
Ci.nsIProcess
);
// FIXME: Bug 1481691 - We should avoid extracting files every time.
const adbFile = await this._getAdbFile();
process.init(adbFile);
// Hide command prompt window on Windows
process.startHidden = true;
process.noShell = true;
const params = ["start-server"];
let isStarted = false;
try {
await this._runProcess(process, params);
isStarted = await waitUntil(check);
} catch (e) {}
if (isStarted) {
onSuccessfulStart();
} else {
this._ready = false;
throw new Error("ADB Process didn't start");
}
}
/**
* Stop the ADB server, but only if we started it. If it was started before
* us, we return immediately.
*/
async stop() {
if (!this._didRunInitially) {
return; // We didn't start the server, nothing to do
}
await this.kill();
}
/**
* Kill the ADB server.
*/
async kill() {
try {
await runCommand("host:kill");
} catch (e) {
dumpn("Failed to send host:kill command");
}
dumpn("adb server was terminated by host:kill");
this._ready = false;
this._didRunInitially = false;
}
}
exports.adbProcess = new AdbProcess();
|
