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
|
/* NSC -- new Scala compiler
* Copyright 2005-2007 LAMP/EPFL
* @author Martin Odersky
*/
// $Id$
package scala.tools.nsc
import java.io.{BufferedOutputStream, File, FileOutputStream, PrintStream}
import java.lang.{Runtime, System, Thread}
import scala.concurrent.ops.spawn
import scala.tools.nsc.doc.{DocDriver => DocGenerator}
import scala.tools.nsc.reporters.{Reporter, ConsoleReporter}
import scala.tools.nsc.util.FakePos //Position
import scala.tools.util.SocketServer
/**
* The server part of the fsc offline compiler. It awaits compilation
* commands and executes them. It caches a compiler instance so
* that it can respond more quickly.
*
* @author Martin Odersky
* @version 1.0
*/
class StandardCompileServer extends SocketServer {
def compileSocket: CompileSocket = CompileSocket // todo: make this a lazy val
val versionMsg = "Fast Scala compiler " +
Properties.versionString + " -- " +
Properties.copyrightString
val MaxCharge = 0.8
var shutDown: Boolean = false
private var compiler: Global = null
private def settingsAreCompatible(s1: Settings, s2: Settings) = s1 == s2
private def exit(code: Int): Nothing = {
System.err.close()
System.out.close()
Predef.exit(code)
}
private val runtime = Runtime.getRuntime()
var reporter: ConsoleReporter = _
/** Create a new compiler instance */
def newGlobal(settings: Settings, reporter: Reporter) =
new Global(settings, reporter) {
override def inform(msg: String) = out.println(msg)
}
override def timeout() {
if (!compileSocket.portFile(port).exists())
fatal("port file no longer exists; skipping cleanup")
}
protected def newOfflineCompilerCommand(
arguments: List[String],
settings: Settings,
error: String => Unit,
interactive: Boolean)
= new OfflineCompilerCommand(arguments, settings, error, interactive)
def session() {
System.out.println("New session" +
", total memory = "+ runtime.totalMemory() +
", max memory = " + runtime.maxMemory() +
", free memory = " + runtime.freeMemory)
System.out.flush()
val password = compileSocket.getPassword(port)
val guessedPassword = in.readLine()
val input = in.readLine()
if ((input ne null) && password == guessedPassword) {
val args = input.split("\0",-1).toList
if (args contains "-shutdown") {
out.println("[Compile server exited]")
shutDown = true
return
}
if (args contains "-reset") {
out.println("[Compile server was reset]")
compiler = null
return
}
def error(msg: String) {
out.println(/*new Position*/ FakePos("fsc"),
msg + "\n fsc -help gives more information")
}
val command = newOfflineCompilerCommand(args, new Settings(error), error, false)
reporter = new ConsoleReporter(command.settings, in, out) {
// disable prompts, so that compile server cannot block
override def displayPrompt = ()
}
if (command.shouldStopWithInfo) {
reporter.info(null,
command.getInfoMessage(newGlobal(command.settings, reporter)), true)
} else if (command.files.isEmpty)
reporter.info(null, command.usageMsg, true)
else {
try {
if ((compiler ne null) && settingsAreCompatible(command.settings, compiler.settings)) {
compiler.settings = command.settings
compiler.reporter = reporter
} else {
if (args contains "-verbose")
out.println("[Starting new compile server instance]")
compiler = newGlobal(command.settings, reporter)
}
val c = compiler
val run = new c.Run
run compile command.files
} catch {
case ex @ FatalError(msg) =>
if (command.settings.debug.value)
ex.printStackTrace(out);
reporter.error(null, "fatal error: " + msg)
compiler = null
case ex: Throwable =>
ex.printStackTrace(out);
reporter.error(null, "fatal error (server aborted): " + ex.getMessage())
shutDown = true
}
reporter.printSummary()
runtime.gc()
if ((runtime.totalMemory() - runtime.freeMemory()).toDouble /
runtime.maxMemory().toDouble > MaxCharge) compiler = null
}
}
}
/** A directory holding redirected output */
private val redirectDir = new File(compileSocket.tmpDir, "output-redirects")
redirectDir.mkdirs
private def redirect(setter: PrintStream => Unit, filename: String) {
setter(
new PrintStream(
new BufferedOutputStream(
new FileOutputStream(
new File(redirectDir, filename)))))
}
def main(args: Array[String]) {
redirect(System.setOut, "scala-compile-server-out.log")
redirect(System.setErr, "scala-compile-server-err.log")
System.err.println("...starting server on socket "+port+"...")
System.err.flush()
compileSocket.setPort(port)
run()
compileSocket.deletePort(port)
exit(0)
}
}
object CompileServer extends StandardCompileServer
|
