author | wenzelm |
Wed, 24 Sep 2008 19:33:14 +0200 | |
changeset 28344 | f4a17868bde5 |
parent 28303 | 8c4a4f256c16 |
child 28497 | 40e1cc165b05 |
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 and codes |
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// internal system notification |
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val SYSTEM = Value("SYSTEM") |
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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 INIT = Value("INIT") |
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val STATUS = Value("STATUS") |
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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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// messages codes |
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val code = Map( |
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('A' : Int) -> Kind.INIT, |
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('B' : Int) -> Kind.STATUS, |
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('C' : Int) -> Kind.WRITELN, |
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('D' : Int) -> Kind.PRIORITY, |
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('E' : Int) -> Kind.TRACING, |
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('F' : Int) -> Kind.WARNING, |
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('G' : Int) -> Kind.ERROR, |
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('H' : Int) -> Kind.DEBUG, |
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('I' : Int) -> Kind.PROMPT, |
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('0' : Int) -> Kind.SYSTEM, |
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('1' : Int) -> Kind.STDIN, |
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('2' : Int) -> Kind.STDOUT, |
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('3' : Int) -> Kind.SIGNAL, |
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('4' : Int) -> Kind.EXIT) |
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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 == SYSTEM || |
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kind == SIGNAL || |
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kind == EXIT |
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def is_system(kind: Value) = |
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kind == SYSTEM || |
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kind == STDIN || |
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kind == SIGNAL || |
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kind == EXIT || |
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kind == STATUS || |
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kind == PROMPT |
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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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|
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138 |
def kill() = synchronized { |
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|
139 |
if (proc == 0) error("Cannot kill Isabelle: no process") |
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|
140 |
else { |
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|
141 |
try_close() |
27990 | 142 |
Thread.sleep(500) |
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|
143 |
put_result(Kind.SIGNAL, null, "KILL") |
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|
144 |
proc.destroy |
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|
145 |
proc = null |
27990 | 146 |
pid = null |
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|
147 |
} |
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|
148 |
} |
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changeset
|
149 |
|
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|
150 |
|
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|
151 |
/* output being piped into the process */ |
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|
152 |
|
27990 | 153 |
private val output = new LinkedBlockingQueue[String] |
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|
154 |
|
28045 | 155 |
private def output_raw(text: String) = synchronized { |
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|
156 |
if (proc == null) error("Cannot output to Isabelle: no process") |
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|
157 |
if (closing) error("Cannot output to Isabelle: already closing") |
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|
158 |
output.put(text) |
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|
159 |
} |
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|
160 |
|
28303 | 161 |
def output_sync(text: String) = |
28045 | 162 |
output_raw(" \\<^sync>\n; " + text + " \\<^sync>;\n") |
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|
163 |
|
27963 | 164 |
|
165 |
def command(text: String) = |
|
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|
166 |
output_sync("Isabelle.command " + IsabelleSyntax.encode_string(text)) |
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|
167 |
|
27963 | 168 |
def command(props: Properties, text: String) = |
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|
169 |
output_sync("Isabelle.command " + IsabelleSyntax.encode_properties(props) + " " + |
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|
170 |
IsabelleSyntax.encode_string(text)) |
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|
171 |
|
27963 | 172 |
def ML(text: String) = |
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|
173 |
output_sync("ML_val " + IsabelleSyntax.encode_string(text)) |
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|
174 |
|
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|
175 |
def close() = synchronized { // FIXME watchdog/timeout |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
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|
176 |
output_raw("\u0000") |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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|
177 |
closing = true |
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|
178 |
} |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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changeset
|
179 |
|
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|
180 |
def try_close() = synchronized { |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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|
181 |
if (proc != null && !closing) { |
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|
182 |
try { close() } |
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changeset
|
183 |
catch { case _: RuntimeException => } |
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|
184 |
} |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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changeset
|
185 |
} |
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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
|
186 |
|
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parents:
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changeset
|
187 |
|
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changeset
|
188 |
/* stdin */ |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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changeset
|
189 |
|
28045 | 190 |
private class StdinThread(out_stream: OutputStream) extends Thread("isabelle: stdin") { |
27949
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|
191 |
override def run() = { |
28056 | 192 |
val writer = new BufferedWriter(new OutputStreamWriter(out_stream, IsabelleSystem.charset)) |
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|
193 |
var finished = false |
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Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
194 |
while (!finished) { |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
195 |
try { |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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changeset
|
196 |
//{{{ |
27955
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changeset
|
197 |
val s = output.take |
27949
6eb0327c0b9b
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wenzelm
parents:
diff
changeset
|
198 |
if (s == "\u0000") { |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
199 |
writer.close |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
200 |
finished = true |
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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 |
else { |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
203 |
put_result(Kind.STDIN, null, s) |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
204 |
writer.write(s) |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
205 |
writer.flush |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
206 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
207 |
//}}} |
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 |
catch { |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
210 |
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
|
211 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
212 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
213 |
put_result(Kind.SYSTEM, null, "Stdin thread terminated") |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
214 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
215 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
216 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
217 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
218 |
/* stdout */ |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
219 |
|
28045 | 220 |
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
|
221 |
override def run() = { |
28056 | 222 |
val reader = new BufferedReader(new InputStreamReader(in_stream, IsabelleSystem.charset)) |
28045 | 223 |
var result = new StringBuilder(100) |
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
224 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
225 |
var finished = false |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
226 |
while (!finished) { |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
227 |
try { |
28045 | 228 |
//{{{ |
229 |
var c = -1 |
|
230 |
var done = false |
|
231 |
while (!done && (result.length == 0 || reader.ready)) { |
|
232 |
c = reader.read |
|
233 |
if (c >= 0) result.append(c.asInstanceOf[Char]) |
|
234 |
else done = true |
|
235 |
} |
|
236 |
if (result.length > 0) { |
|
237 |
put_result(Kind.STDOUT, null, result.toString) |
|
238 |
result.length = 0 |
|
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
239 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
240 |
else { |
28045 | 241 |
reader.close |
242 |
finished = true |
|
243 |
try_close() |
|
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
244 |
} |
28045 | 245 |
//}}} |
27963 | 246 |
} |
247 |
catch { |
|
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
248 |
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
|
249 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
250 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
251 |
put_result(Kind.SYSTEM, null, "Stdout thread terminated") |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
252 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
253 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
254 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
255 |
|
28045 | 256 |
/* messages */ |
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
257 |
|
28045 | 258 |
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
|
259 |
override def run() = { |
28056 | 260 |
val reader = IsabelleSystem.fifo_reader(fifo) |
28045 | 261 |
var kind: Kind.Value = null |
262 |
var props: Properties = null |
|
263 |
var result = new StringBuilder |
|
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
264 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
265 |
var finished = false |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
266 |
while (!finished) { |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
267 |
try { |
28063 | 268 |
if (kind == null) { |
269 |
//{{{ Char mode -- resync |
|
270 |
var c = -1 |
|
271 |
do { |
|
272 |
c = reader.read |
|
273 |
if (c >= 0 && c != 2) result.append(c.asInstanceOf[Char]) |
|
274 |
} while (c >= 0 && c != 2) |
|
275 |
||
276 |
if (result.length > 0) { |
|
277 |
put_result(Kind.SYSTEM, null, "Malformed message:\n" + result.toString) |
|
278 |
result.length = 0 |
|
279 |
} |
|
280 |
if (c < 0) { |
|
281 |
reader.close |
|
282 |
finished = true |
|
283 |
try_close() |
|
28045 | 284 |
} |
285 |
else { |
|
28344
f4a17868bde5
protocol change: remapped message codes to make room for nested system messages (e.g. for protocol proxy);
wenzelm
parents:
28303
diff
changeset
|
286 |
c = reader.read |
f4a17868bde5
protocol change: remapped message codes to make room for nested system messages (e.g. for protocol proxy);
wenzelm
parents:
28303
diff
changeset
|
287 |
if (Kind.code.isDefinedAt(c)) kind = Kind.code(c) |
f4a17868bde5
protocol change: remapped message codes to make room for nested system messages (e.g. for protocol proxy);
wenzelm
parents:
28303
diff
changeset
|
288 |
else kind = null |
28063 | 289 |
props = null |
290 |
} |
|
291 |
//}}} |
|
292 |
} |
|
293 |
else { |
|
294 |
//{{{ Line mode |
|
295 |
val line = reader.readLine |
|
296 |
if (line == null) { |
|
297 |
reader.close |
|
298 |
finished = true |
|
299 |
try_close() |
|
300 |
} |
|
301 |
else { |
|
302 |
val len = line.length |
|
303 |
// property |
|
304 |
if (line.endsWith("\u0002,")) { |
|
305 |
val i = line.indexOf('=') |
|
306 |
if (i > 0) { |
|
307 |
val name = line.substring(0, i) |
|
308 |
val value = line.substring(i + 1, len - 2) |
|
309 |
if (props == null) props = new Properties |
|
310 |
if (!props.containsKey(name)) props.setProperty(name, value) |
|
28045 | 311 |
} |
312 |
} |
|
28063 | 313 |
// last text line |
314 |
else if (line.endsWith("\u0002.")) { |
|
315 |
result.append(line.substring(0, len - 2)) |
|
316 |
put_result(kind, props, result.toString) |
|
317 |
result.length = 0 |
|
318 |
kind = null |
|
319 |
} |
|
320 |
// text line |
|
321 |
else { |
|
322 |
result.append(line) |
|
323 |
result.append('\n') |
|
324 |
} |
|
28045 | 325 |
} |
28063 | 326 |
//}}} |
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
327 |
} |
27963 | 328 |
} |
28063 | 329 |
catch { |
330 |
case e: IOException => put_result(Kind.SYSTEM, null, "Message thread: " + e.getMessage) |
|
331 |
} |
|
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
332 |
} |
28063 | 333 |
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
|
334 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
335 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
336 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
337 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
338 |
/** main **/ |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
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|
339 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
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340 |
{ |
28045 | 341 |
|
342 |
/* message fifo */ |
|
343 |
||
28063 | 344 |
val message_fifo = IsabelleSystem.mk_fifo() |
345 |
def rm_fifo() = IsabelleSystem.rm_fifo(message_fifo) |
|
28045 | 346 |
|
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val message_thread = new MessageThread(message_fifo) |
348 |
message_thread.start |
|
28045 | 349 |
|
350 |
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18d02c0b90b6
moved class Result into static object, removed dynamic tree method;
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351 |
/* exec process */ |
27963 | 352 |
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18d02c0b90b6
moved class Result into static object, removed dynamic tree method;
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changeset
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353 |
try { |
28063 | 354 |
val cmdline = List(IsabelleSystem.getenv_strict("ISABELLE_HOME") + |
355 |
"/bin/isabelle-process", "-W", message_fifo) ++ args |
|
356 |
proc = IsabelleSystem.exec2(cmdline: _*) |
|
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Isabelle process management -- always reactive due to multi-threaded I/O.
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changeset
|
357 |
} |
27993
6dd90ef9f927
simplified exceptions: use plain error function / RuntimeException;
wenzelm
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|
358 |
catch { |
28063 | 359 |
case e: IOException => |
360 |
rm_fifo() |
|
361 |
error("Failed to execute Isabelle process: " + e.getMessage) |
|
27993
6dd90ef9f927
simplified exceptions: use plain error function / RuntimeException;
wenzelm
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27992
diff
changeset
|
362 |
} |
27949
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
363 |
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Isabelle process management -- always reactive due to multi-threaded I/O.
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changeset
|
364 |
|
28045 | 365 |
/* stdin/stdout */ |
366 |
||
367 |
new StdinThread(proc.getOutputStream).start |
|
368 |
new StdoutThread(proc.getInputStream).start |
|
369 |
||
370 |
||
371 |
/* exit */ |
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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
|
372 |
|
28063 | 373 |
new Thread("isabelle: exit") { |
28045 | 374 |
override def run() = { |
375 |
val rc = proc.waitFor() |
|
376 |
Thread.sleep(300) |
|
377 |
put_result(Kind.SYSTEM, null, "Exit thread terminated") |
|
378 |
put_result(Kind.EXIT, null, Integer.toString(rc)) |
|
28063 | 379 |
rm_fifo() |
28045 | 380 |
} |
28063 | 381 |
}.start |
382 |
||
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Isabelle process management -- always reactive due to multi-threaded I/O.
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parents:
diff
changeset
|
383 |
} |
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
384 |
|
6eb0327c0b9b
Isabelle process management -- always reactive due to multi-threaded I/O.
wenzelm
parents:
diff
changeset
|
385 |
} |