author | haftmann |
Wed, 17 Sep 2008 07:32:04 +0200 | |
changeset 28256 | 4e7f7d52f855 |
parent 28063 | 3533485fc7b8 |
child 28303 | 8c4a4f256c16 |
permissions | -rw-r--r-- |
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/* Title: Pure/Tools/isabelle_process.ML |
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ID: $Id$ |
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Author: Makarius |
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Options: :folding=explicit:collapseFolds=1: |
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Isabelle process management -- always reactive due to multi-threaded I/O. |
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*/ |
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package isabelle |
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import java.util.Properties |
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import java.util.concurrent.LinkedBlockingQueue |
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import java.io.{BufferedReader, BufferedWriter, InputStreamReader, OutputStreamWriter, |
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InputStream, OutputStream, IOException} |
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import isabelle.{Symbol, XML} |
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object IsabelleProcess { |
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/* results */ |
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object Kind extends Enumeration { |
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//{{{ values |
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// Posix channels/events |
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val STDIN = Value("STDIN") |
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val STDOUT = Value("STDOUT") |
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val SIGNAL = Value("SIGNAL") |
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val EXIT = Value("EXIT") |
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// Isabelle messages |
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val WRITELN = Value("WRITELN") |
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val PRIORITY = Value("PRIORITY") |
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val TRACING = Value("TRACING") |
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val WARNING = Value("WARNING") |
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val ERROR = Value("ERROR") |
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val DEBUG = Value("DEBUG") |
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val PROMPT = Value("PROMPT") |
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val INIT = Value("INIT") |
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val STATUS = Value("STATUS") |
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// internal system notification |
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val SYSTEM = Value("SYSTEM") |
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//}}} |
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def is_raw(kind: Value) = |
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kind == STDOUT |
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def is_control(kind: Value) = |
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kind == SIGNAL || |
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kind == EXIT || |
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kind == SYSTEM |
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def is_system(kind: Value) = |
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kind == STDIN || |
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kind == SIGNAL || |
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kind == EXIT || |
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kind == PROMPT || |
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kind == STATUS || |
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kind == SYSTEM |
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} |
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class Result(val kind: Kind.Value, val props: Properties, val result: String) { |
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override def toString = { |
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val res = XML.content(YXML.parse_failsafe(result)).mkString("") |
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if (props == null) kind.toString + " [[" + res + "]]" |
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else kind.toString + " " + props.toString + " [[" + res + "]]" |
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} |
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def is_raw() = Kind.is_raw(kind) |
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def is_control() = Kind.is_control(kind) |
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def is_system() = Kind.is_system(kind) |
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} |
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} |
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class IsabelleProcess(args: String*) { |
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import IsabelleProcess._ |
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/* process information */ |
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private var proc: Process = null |
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private var closing = false |
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private var pid: String = null |
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private var the_session: String = null |
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def session() = the_session |
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/* results */ |
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private val results = new LinkedBlockingQueue[Result] |
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private def put_result(kind: Kind.Value, props: Properties, result: String) { |
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if (kind == Kind.INIT && props != null) { |
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pid = props.getProperty(Markup.PID) |
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the_session = props.getProperty(Markup.SESSION) |
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} |
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results.put(new Result(kind, props, result)) |
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} |
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def get_result() = results.take |
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def try_result() = { |
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val res = results.poll |
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if (res != null) Some(res) else None |
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} |
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/* signals */ |
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def interrupt() = synchronized { |
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if (proc == null) error("Cannot interrupt Isabelle: no process") |
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if (pid == null) put_result(Kind.SYSTEM, null, "Cannot interrupt: unknown pid") |
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else { |
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try { |
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if (IsabelleSystem.exec("kill", "-INT", pid).waitFor == 0) |
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put_result(Kind.SIGNAL, null, "INT") |
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else |
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put_result(Kind.SYSTEM, null, "Cannot interrupt: kill command failed") |
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} |
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catch { case e: IOException => error("Cannot interrupt Isabelle: " + e.getMessage) } |
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} |
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} |
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def kill() = synchronized { |
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if (proc == 0) error("Cannot kill Isabelle: no process") |
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else { |
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try_close() |
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Thread.sleep(500) |
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put_result(Kind.SIGNAL, null, "KILL") |
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proc.destroy |
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proc = null |
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pid = null |
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} |
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} |
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/* output being piped into the process */ |
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private val output = new LinkedBlockingQueue[String] |
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private def output_raw(text: String) = synchronized { |
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if (proc == null) error("Cannot output to Isabelle: no process") |
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if (closing) error("Cannot output to Isabelle: already closing") |
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output.put(text) |
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} |
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private def output_sync(text: String) = |
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output_raw(" \\<^sync>\n; " + text + " \\<^sync>;\n") |
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def command(text: String) = |
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|
150 |
output_sync("Isabelle.command " + IsabelleSyntax.encode_string(text)) |
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|
151 |
|
27963 | 152 |
def command(props: Properties, text: String) = |
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|
153 |
output_sync("Isabelle.command " + IsabelleSyntax.encode_properties(props) + " " + |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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changeset
|
154 |
IsabelleSyntax.encode_string(text)) |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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changeset
|
155 |
|
27963 | 156 |
def ML(text: String) = |
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diff
changeset
|
157 |
output_sync("ML_val " + IsabelleSyntax.encode_string(text)) |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
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parents:
diff
changeset
|
158 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
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parents:
diff
changeset
|
159 |
def close() = synchronized { // FIXME watchdog/timeout |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
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parents:
diff
changeset
|
160 |
output_raw("\u0000") |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
161 |
closing = true |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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changeset
|
162 |
} |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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parents:
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changeset
|
163 |
|
6eb0327c0b9b
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parents:
diff
changeset
|
164 |
def try_close() = synchronized { |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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parents:
diff
changeset
|
165 |
if (proc != null && !closing) { |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
166 |
try { close() } |
27993
6dd90ef9f927
simplified exceptions: use plain error function / RuntimeException;
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parents:
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diff
changeset
|
167 |
catch { case _: RuntimeException => } |
27949
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Isabelle process management -- always reactive due to multi-threaded I/O.
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parents:
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changeset
|
168 |
} |
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Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
169 |
} |
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Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
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changeset
|
170 |
|
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Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
171 |
|
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Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
172 |
/* stdin */ |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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changeset
|
173 |
|
28045 | 174 |
private class StdinThread(out_stream: OutputStream) extends Thread("isabelle: stdin") { |
27949
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Isabelle process management -- always reactive due to multi-threaded I/O.
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parents:
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changeset
|
175 |
override def run() = { |
28056 | 176 |
val writer = new BufferedWriter(new OutputStreamWriter(out_stream, IsabelleSystem.charset)) |
27949
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Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
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changeset
|
177 |
var finished = false |
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Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
178 |
while (!finished) { |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
179 |
try { |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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parents:
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changeset
|
180 |
//{{{ |
27955
4c32c5e75eca
use java.util.concurrent.LinkedBlockingQueue, which blocks as required;
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diff
changeset
|
181 |
val s = output.take |
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
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parents:
diff
changeset
|
182 |
if (s == "\u0000") { |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
183 |
writer.close |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
184 |
finished = true |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
185 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
186 |
else { |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
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parents:
diff
changeset
|
187 |
put_result(Kind.STDIN, null, s) |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
188 |
writer.write(s) |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
189 |
writer.flush |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
190 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
191 |
//}}} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
192 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
193 |
catch { |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
194 |
case e: IOException => put_result(Kind.SYSTEM, null, "Stdin thread: " + e.getMessage) |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
195 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
196 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
197 |
put_result(Kind.SYSTEM, null, "Stdin thread terminated") |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
198 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
199 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
200 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
201 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
202 |
/* stdout */ |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
203 |
|
28045 | 204 |
private class StdoutThread(in_stream: InputStream) extends Thread("isabelle: stdout") { |
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
205 |
override def run() = { |
28056 | 206 |
val reader = new BufferedReader(new InputStreamReader(in_stream, IsabelleSystem.charset)) |
28045 | 207 |
var result = new StringBuilder(100) |
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
208 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
209 |
var finished = false |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
210 |
while (!finished) { |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
211 |
try { |
28045 | 212 |
//{{{ |
213 |
var c = -1 |
|
214 |
var done = false |
|
215 |
while (!done && (result.length == 0 || reader.ready)) { |
|
216 |
c = reader.read |
|
217 |
if (c >= 0) result.append(c.asInstanceOf[Char]) |
|
218 |
else done = true |
|
219 |
} |
|
220 |
if (result.length > 0) { |
|
221 |
put_result(Kind.STDOUT, null, result.toString) |
|
222 |
result.length = 0 |
|
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
223 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
224 |
else { |
28045 | 225 |
reader.close |
226 |
finished = true |
|
227 |
try_close() |
|
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
228 |
} |
28045 | 229 |
//}}} |
27963 | 230 |
} |
231 |
catch { |
|
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
232 |
case e: IOException => put_result(Kind.SYSTEM, null, "Stdout thread: " + e.getMessage) |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
233 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
234 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
235 |
put_result(Kind.SYSTEM, null, "Stdout thread terminated") |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
236 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
237 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
238 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
239 |
|
28045 | 240 |
/* messages */ |
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
241 |
|
28045 | 242 |
private class MessageThread(fifo: String) extends Thread("isabelle: messages") { |
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
243 |
override def run() = { |
28056 | 244 |
val reader = IsabelleSystem.fifo_reader(fifo) |
28045 | 245 |
var kind: Kind.Value = null |
246 |
var props: Properties = null |
|
247 |
var result = new StringBuilder |
|
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
248 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
249 |
var finished = false |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
250 |
while (!finished) { |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
251 |
try { |
28063 | 252 |
if (kind == null) { |
253 |
//{{{ Char mode -- resync |
|
254 |
var c = -1 |
|
255 |
do { |
|
256 |
c = reader.read |
|
257 |
if (c >= 0 && c != 2) result.append(c.asInstanceOf[Char]) |
|
258 |
} while (c >= 0 && c != 2) |
|
259 |
||
260 |
if (result.length > 0) { |
|
261 |
put_result(Kind.SYSTEM, null, "Malformed message:\n" + result.toString) |
|
262 |
result.length = 0 |
|
263 |
} |
|
264 |
if (c < 0) { |
|
265 |
reader.close |
|
266 |
finished = true |
|
267 |
try_close() |
|
28045 | 268 |
} |
269 |
else { |
|
28063 | 270 |
reader.read match { |
271 |
case 'A' => kind = Kind.WRITELN |
|
272 |
case 'B' => kind = Kind.PRIORITY |
|
273 |
case 'C' => kind = Kind.TRACING |
|
274 |
case 'D' => kind = Kind.WARNING |
|
275 |
case 'E' => kind = Kind.ERROR |
|
276 |
case 'F' => kind = Kind.DEBUG |
|
277 |
case 'G' => kind = Kind.PROMPT |
|
278 |
case 'H' => kind = Kind.INIT |
|
279 |
case 'I' => kind = Kind.STATUS |
|
280 |
case _ => kind = null |
|
28045 | 281 |
} |
28063 | 282 |
props = null |
283 |
} |
|
284 |
//}}} |
|
285 |
} |
|
286 |
else { |
|
287 |
//{{{ Line mode |
|
288 |
val line = reader.readLine |
|
289 |
if (line == null) { |
|
290 |
reader.close |
|
291 |
finished = true |
|
292 |
try_close() |
|
293 |
} |
|
294 |
else { |
|
295 |
val len = line.length |
|
296 |
// property |
|
297 |
if (line.endsWith("\u0002,")) { |
|
298 |
val i = line.indexOf('=') |
|
299 |
if (i > 0) { |
|
300 |
val name = line.substring(0, i) |
|
301 |
val value = line.substring(i + 1, len - 2) |
|
302 |
if (props == null) props = new Properties |
|
303 |
if (!props.containsKey(name)) props.setProperty(name, value) |
|
28045 | 304 |
} |
305 |
} |
|
28063 | 306 |
// last text line |
307 |
else if (line.endsWith("\u0002.")) { |
|
308 |
result.append(line.substring(0, len - 2)) |
|
309 |
put_result(kind, props, result.toString) |
|
310 |
result.length = 0 |
|
311 |
kind = null |
|
312 |
} |
|
313 |
// text line |
|
314 |
else { |
|
315 |
result.append(line) |
|
316 |
result.append('\n') |
|
317 |
} |
|
28045 | 318 |
} |
28063 | 319 |
//}}} |
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
320 |
} |
27963 | 321 |
} |
28063 | 322 |
catch { |
323 |
case e: IOException => put_result(Kind.SYSTEM, null, "Message thread: " + e.getMessage) |
|
324 |
} |
|
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
325 |
} |
28063 | 326 |
put_result(Kind.SYSTEM, null, "Message thread terminated") |
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
327 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
328 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
329 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
330 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
331 |
/** main **/ |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
332 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
333 |
{ |
28045 | 334 |
|
335 |
/* message fifo */ |
|
336 |
||
28063 | 337 |
val message_fifo = IsabelleSystem.mk_fifo() |
338 |
def rm_fifo() = IsabelleSystem.rm_fifo(message_fifo) |
|
28045 | 339 |
|
28063 | 340 |
val message_thread = new MessageThread(message_fifo) |
341 |
message_thread.start |
|
28045 | 342 |
|
343 |
||
27973
18d02c0b90b6
moved class Result into static object, removed dynamic tree method;
wenzelm
parents:
27963
diff
changeset
|
344 |
/* exec process */ |
27963 | 345 |
|
27973
18d02c0b90b6
moved class Result into static object, removed dynamic tree method;
wenzelm
parents:
27963
diff
changeset
|
346 |
try { |
28063 | 347 |
val cmdline = List(IsabelleSystem.getenv_strict("ISABELLE_HOME") + |
348 |
"/bin/isabelle-process", "-W", message_fifo) ++ args |
|
349 |
proc = IsabelleSystem.exec2(cmdline: _*) |
|
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
350 |
} |
27993
6dd90ef9f927
simplified exceptions: use plain error function / RuntimeException;
wenzelm
parents:
27992
diff
changeset
|
351 |
catch { |
28063 | 352 |
case e: IOException => |
353 |
rm_fifo() |
|
354 |
error("Failed to execute Isabelle process: " + e.getMessage) |
|
27993
6dd90ef9f927
simplified exceptions: use plain error function / RuntimeException;
wenzelm
parents:
27992
diff
changeset
|
355 |
} |
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
356 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
357 |
|
28045 | 358 |
/* stdin/stdout */ |
359 |
||
360 |
new StdinThread(proc.getOutputStream).start |
|
361 |
new StdoutThread(proc.getInputStream).start |
|
362 |
||
363 |
||
364 |
/* exit */ |
|
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
365 |
|
28063 | 366 |
new Thread("isabelle: exit") { |
28045 | 367 |
override def run() = { |
368 |
val rc = proc.waitFor() |
|
369 |
Thread.sleep(300) |
|
370 |
put_result(Kind.SYSTEM, null, "Exit thread terminated") |
|
371 |
put_result(Kind.EXIT, null, Integer.toString(rc)) |
|
28063 | 372 |
rm_fifo() |
28045 | 373 |
} |
28063 | 374 |
}.start |
375 |
||
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
376 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
377 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
378 |
} |