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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
|
(* Copyright (c) 2008-2012, Adam Chlipala
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - The names of contributors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*)
val socket = ".urweb_daemon"
(* Encapsulate main invocation handler in a function, possibly to be called multiple times within a daemon. *)
exception Code of OS.Process.status
fun oneRun args =
let
val timing = ref false
val tc = ref false
val sources = ref ([] : string list)
val demo = ref (NONE : (string * bool) option)
val tutorial = ref false
val css = ref false
val () = (Compiler.debug := false;
Elaborate.verbose := false;
Elaborate.dumpTypes := false;
Elaborate.dumpTypesOnError := false;
Elaborate.unifyMore := false;
Compiler.dumpSource := false;
Compiler.doIflow := false;
Demo.noEmacs := false;
Settings.setDebug false)
val () = Compiler.beforeC := MLton.GC.pack
fun printVersion () = (print (Config.versionString ^ "\n");
raise Code OS.Process.success)
fun printNumericVersion () = (print (Config.versionNumber ^ "\n");
raise Code OS.Process.success)
fun printCCompiler () = (print (Settings.getCCompiler () ^ "\n");
raise Code OS.Process.success)
fun printCInclude () = (print (Config.includ ^ "\n");
raise Code OS.Process.success)
fun doArgs args =
case args of
[] => ()
| "-version" :: rest =>
printVersion ()
| "-numeric-version" :: rest =>
printNumericVersion ()
| "-css" :: rest =>
(css := true;
doArgs rest)
| "-print-ccompiler" :: rest =>
printCCompiler ()
| "-print-cinclude" :: rest =>
printCInclude ()
| "-ccompiler" :: ccomp :: rest =>
(Settings.setCCompiler ccomp;
doArgs rest)
| "-demo" :: prefix :: rest =>
(demo := SOME (prefix, false);
doArgs rest)
| "-guided-demo" :: prefix :: rest =>
(demo := SOME (prefix, true);
doArgs rest)
| "-tutorial" :: rest =>
(tutorial := true;
doArgs rest)
| "-protocol" :: name :: rest =>
(Settings.setProtocol name;
doArgs rest)
| "-prefix" :: prefix :: rest =>
(Settings.setUrlPrefix prefix;
doArgs rest)
| "-db" :: s :: rest =>
(Settings.setDbstring (SOME s);
doArgs rest)
| "-dbms" :: name :: rest =>
(Settings.setDbms name;
doArgs rest)
| "-debug" :: rest =>
(Settings.setDebug true;
doArgs rest)
| "-verbose" :: rest =>
(Compiler.debug := true;
Elaborate.verbose := true;
doArgs rest)
| "-timing" :: rest =>
(timing := true;
doArgs rest)
| "-tc" :: rest =>
(tc := true;
doArgs rest)
| "-dumpTypes" :: rest =>
(Elaborate.dumpTypes := true;
doArgs rest)
| "-dumpTypesOnError" :: rest =>
(Elaborate.dumpTypesOnError := true;
doArgs rest)
| "-unifyMore" :: rest =>
(Elaborate.unifyMore := true;
doArgs rest)
| "-dumpSource" :: rest =>
(Compiler.dumpSource := true;
doArgs rest)
| "-dumpVerboseSource" :: rest =>
(Compiler.dumpSource := true;
ElabPrint.debug := true;
ExplPrint.debug := true;
CorePrint.debug := true;
MonoPrint.debug := true;
doArgs rest)
| "-output" :: s :: rest =>
(Settings.setExe (SOME s);
doArgs rest)
| "-sql" :: s :: rest =>
(Settings.setSql (SOME s);
doArgs rest)
| "-static" :: rest =>
(Settings.setStaticLinking true;
doArgs rest)
| "-stop" :: phase :: rest =>
(Compiler.setStop phase;
doArgs rest)
| "-path" :: name :: path :: rest =>
(Compiler.addPath (name, path);
doArgs rest)
| "-root" :: name :: root :: rest =>
(Compiler.addModuleRoot (root, name);
doArgs rest)
| "-boot" :: rest =>
(Compiler.enableBoot ();
Settings.setStaticLinking true;
doArgs rest)
| "-sigfile" :: name :: rest =>
(Settings.setSigFile (SOME name);
doArgs rest)
| "-iflow" :: rest =>
(Compiler.doIflow := true;
doArgs rest)
| "-sqlcache" :: rest =>
(Settings.setSqlcache true;
doArgs rest)
| "-heuristic" :: h :: rest =>
(Sqlcache.setHeuristic h;
doArgs rest)
| "-moduleOf" :: fname :: _ =>
(print (Compiler.moduleOf fname ^ "\n");
raise Code OS.Process.success)
| "-noEmacs" :: rest =>
(Demo.noEmacs := true;
doArgs rest)
| "-limit" :: class :: num :: rest =>
(case Int.fromString num of
NONE => raise Fail ("Invalid limit number '" ^ num ^ "'")
| SOME n =>
if n < 0 then
raise Fail ("Invalid limit number '" ^ num ^ "'")
else
Settings.addLimit (class, n);
doArgs rest)
| "-explainEmbed" :: rest =>
(JsComp.explainEmbed := true;
doArgs rest)
| arg :: rest =>
(if size arg > 0 andalso String.sub (arg, 0) = #"-" then
raise Fail ("Unknown flag " ^ arg)
else
sources := arg :: !sources;
doArgs rest)
val () = case args of
["daemon", "stop"] => OS.Process.exit OS.Process.success
| _ => ()
val () = doArgs args
val job =
case !sources of
[file] => file
| files =>
if List.exists (fn s => s <> "-version") args then
raise Fail ("Zero or multiple input files specified; only one is allowed.\nFiles: "
^ String.concatWith ", " files)
else
printVersion ()
in
case (!css, !demo, !tutorial) of
(true, _, _) =>
(case Compiler.run Compiler.toCss job of
NONE => OS.Process.failure
| SOME {Overall = ov, Classes = cl} =>
(app (print o Css.inheritableToString) ov;
print "\n";
app (fn (x, (ins, ots)) =>
(print x;
print " ";
app (print o Css.inheritableToString) ins;
app (print o Css.othersToString) ots;
print "\n")) cl;
OS.Process.success))
| (_, SOME (prefix, guided), _) =>
if Demo.make' {prefix = prefix, dirname = job, guided = guided} then
OS.Process.success
else
OS.Process.failure
| (_, _, true) => (Tutorial.make job;
OS.Process.success)
| _ =>
if !tc then
(Compiler.check Compiler.toElaborate job;
if ErrorMsg.anyErrors () then
OS.Process.failure
else
OS.Process.success)
else if !timing then
(Compiler.time Compiler.toCjrize job;
OS.Process.success)
else
(if Compiler.compile job then
OS.Process.success
else
OS.Process.failure)
end handle Code n => n
fun send (sock, s) =
let
val n = Socket.sendVec (sock, Word8VectorSlice.full (Vector.map (Word8.fromInt o ord) s))
in
if n >= size s then
()
else
send (sock, String.extract (s, n, NONE))
end
val () = case CommandLine.arguments () of
["daemon", "start"] =>
(case Posix.Process.fork () of
SOME _ => ()
| NONE =>
let
val () = Elaborate.incremental := true
val listen = UnixSock.Strm.socket ()
fun loop () =
let
val (sock, _) = Socket.accept listen
fun loop' (buf, args) =
let
val s = if CharVector.exists (fn ch => ch = #"\n") buf then
""
else
Vector.map (chr o Word8.toInt) (Socket.recvVec (sock, 1024))
val s = buf ^ s
val (befor, after) = Substring.splitl (fn ch => ch <> #"\n") (Substring.full s)
in
if Substring.isEmpty after then
loop' (s, args)
else
let
val cmd = Substring.string befor
val rest = Substring.string (Substring.slice (after, 1, NONE))
in
case cmd of
"" =>
(case args of
["stop", "daemon"] =>
(((Socket.close listen;
OS.FileSys.remove socket) handle OS.SysErr _ => ());
OS.Process.exit OS.Process.success)
| _ =>
let
val success = (oneRun (rev args))
handle ex => (print "unhandled exception:\n";
print (General.exnMessage ex ^ "\n");
OS.Process.failure)
in
TextIO.flushOut TextIO.stdOut;
TextIO.flushOut TextIO.stdErr;
send (sock, if OS.Process.isSuccess success then
"\001"
else
"\002")
end)
| _ => loop' (rest, cmd :: args)
end
end handle OS.SysErr _ => ()
fun redirect old =
Posix.IO.dup2 {old = valOf (Posix.FileSys.iodToFD (Socket.ioDesc sock)),
new = old}
val oldStdout = Posix.IO.dup Posix.FileSys.stdout
val oldStderr = Posix.IO.dup Posix.FileSys.stderr
in
(* Redirect the daemon's output to the socket. *)
redirect Posix.FileSys.stdout;
redirect Posix.FileSys.stderr;
loop' ("", []);
Socket.close sock;
Posix.IO.dup2 {old = oldStdout, new = Posix.FileSys.stdout};
Posix.IO.dup2 {old = oldStderr, new = Posix.FileSys.stderr};
Posix.IO.close oldStdout;
Posix.IO.close oldStderr;
Settings.reset ();
MLton.GC.pack ();
loop ()
end
in
OS.Process.atExit (fn () => OS.FileSys.remove socket);
Socket.bind (listen, UnixSock.toAddr socket);
Socket.listen (listen, 1);
loop ()
end)
| args =>
let
val sock = UnixSock.Strm.socket ()
fun wait () =
let
val v = Socket.recvVec (sock, 1024)
in
if Vector.length v = 0 then
OS.Process.failure
else
let
val s = Vector.map (chr o Word8.toInt) v
val last = Vector.sub (v, Vector.length v - 1)
val (rc, s) = if last = Word8.fromInt 1 then
(SOME OS.Process.success, String.substring (s, 0, size s - 1))
else if last = Word8.fromInt 2 then
(SOME OS.Process.failure, String.substring (s, 0, size s - 1))
else
(NONE, s)
in
print s;
case rc of
NONE => wait ()
| SOME rc => rc
end
end handle OS.SysErr _ => OS.Process.failure
in
if Socket.connectNB (sock, UnixSock.toAddr socket)
orelse not (List.null (#wrs (Socket.select {rds = [],
wrs = [Socket.sockDesc sock],
exs = [],
timeout = SOME (Time.fromSeconds 1)}))) then
(app (fn arg => send (sock, arg ^ "\n")) args;
send (sock, "\n");
OS.Process.exit (wait ()))
else
(OS.FileSys.remove socket;
raise OS.SysErr ("", NONE))
end handle OS.SysErr _ => OS.Process.exit (oneRun args)
|
