15642
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(****************************************************************)
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(****** Slightly modified version of sml Unix structure *********)
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(****************************************************************)
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type signal = Posix.Signal.signal
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datatype exit_status = datatype Posix.Process.exit_status
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val fromStatus = Posix.Process.fromStatus
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(* Internal function - inverse of Posix.Process.fromStatus. *)
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local
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val doCall = RunCall.run_call2 RuntimeCalls.POLY_SYS_os_specific
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in
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fun toStatus W_EXITED: OS.Process.status = doCall(16, (1, 0))
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| toStatus(W_EXITSTATUS w) = doCall(16, (1, Word8.toInt w))
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| toStatus(W_SIGNALED s) =
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doCall(16, (2, SysWord.toInt(Posix.Signal.toWord s)))
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| toStatus(W_STOPPED s) =
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doCall(16, (3, SysWord.toInt(Posix.Signal.toWord s)))
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end
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(* fun reap{pid, infd, outfd} =
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let
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val u = Posix.IO.close infd;
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val u = Posix.IO.close outfd;
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val (_, status) =
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Posix.Process.waitpid(Posix.Process.W_CHILD pid, [])
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in
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toStatus status
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end
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*)
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fun reap(pid, instr, outstr) =
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let
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val u = TextIO.closeIn instr;
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val u = TextIO.closeOut outstr;
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val (_, status) =
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Posix.Process.waitpid(Posix.Process.W_CHILD pid, [])
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in
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toStatus status
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end
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fun fdReader (name : string, fd : Posix.IO.file_desc) =
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Posix.IO.mkReader {initBlkMode = true,name = name,fd = fd };
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fun fdWriter (name, fd) =
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Posix.IO.mkWriter {
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appendMode = false,
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initBlkMode = true,
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name = name,
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chunkSize=4096,
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fd = fd
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};
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fun openOutFD (name, fd) =
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TextIO.mkOutstream (
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TextIO.StreamIO.mkOutstream (
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fdWriter (name, fd), IO.BLOCK_BUF));
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fun openInFD (name, fd) =
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TextIO.mkInstream (
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TextIO.StreamIO.mkInstream (
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fdReader (name, fd), ""));
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(*****************************************)
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(* The result of calling createWatcher *)
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(*****************************************)
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datatype proc = PROC of {
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pid : Posix.Process.pid,
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instr : TextIO.instream,
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outstr : TextIO.outstream
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};
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(*****************************************)
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(* The result of calling executeToList *)
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(*****************************************)
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datatype cmdproc = CMDPROC of {
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prover: string, (* Name of the resolution prover used, e.g. Vampire, SPASS *)
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cmd: string, (* The file containing the goal for res prover to prove *)
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thmstring: string, (* string representation of subgoal after negation, skolemization*)
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goalstring: string, (* string representation of subgoal*)
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pid : Posix.Process.pid,
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instr : TextIO.instream, (* Input stream to child process *)
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outstr : TextIO.outstream (* Output stream from child process *)
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};
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fun killChild pid = Posix.Process.kill(Posix.Process.K_PROC pid, Posix.Signal.kill);
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fun childInfo (PROC{pid,instr,outstr}) = ((pid, (instr,outstr)));
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fun cmdstreamsOf (CMDPROC{instr,outstr,...}) = (instr, outstr);
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fun cmdInStream (CMDPROC{instr,outstr,...}) = (instr);
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fun cmdchildInfo (CMDPROC{prover,cmd,thmstring,goalstring,pid,instr,outstr}) = (prover,(cmd,(pid, (instr,outstr))));
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fun cmdchildPid (CMDPROC{prover,cmd,thmstring,goalstring,pid,instr,outstr}) = (pid);
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fun cmdProver (CMDPROC{prover,cmd,thmstring,goalstring,pid,instr,outstr}) = (prover);
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fun cmdThm (CMDPROC{prover,cmd,thmstring,goalstring,pid,instr,outstr}) = (thmstring);
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fun cmdGoal (CMDPROC{prover,cmd,thmstring,goalstring,pid,instr,outstr}) = (goalstring);
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(***************************************************************************)
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(* Takes a command - e.g. 'vampire', a list of arguments for the command, *)
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(* and a list of currently running processes. Creates a new process for *)
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(* cmd and argv and adds it to procList *)
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(***************************************************************************)
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fun mySshExecuteToList (cmd, argv, procList) = let
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val p1 = Posix.IO.pipe ()
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val p2 = Posix.IO.pipe ()
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val prover = hd argv
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val thmstring = hd(tl argv)
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val goalstring = hd(tl(tl argv))
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val argv = tl (tl argv)
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(* Turn the arguments into a single string. Perhaps we should quote the
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arguments. *)
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fun convArgs [] = []
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| convArgs [s] = [s]
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| convArgs (hd::tl) = hd :: " " :: convArgs tl
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val cmd_args = concat(convArgs(cmd :: argv))
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fun closep () = (
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Posix.IO.close (#outfd p1);
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Posix.IO.close (#infd p1);
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Posix.IO.close (#outfd p2);
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Posix.IO.close (#infd p2)
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)
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fun startChild () =(case Posix.Process.fork()
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of SOME pid => pid (* parent *)
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| NONE => let
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val oldchildin = #infd p1
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val newchildin = Posix.FileSys.wordToFD 0w0
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val oldchildout = #outfd p2
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val newchildout = Posix.FileSys.wordToFD 0w1
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(*val args = (["shep"]@([cmd]@argv))
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val newcmd = "/usr/bin/ssh"*)
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in
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Posix.IO.close (#outfd p1);
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Posix.IO.close (#infd p2);
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Posix.IO.dup2{old = oldchildin, new = newchildin};
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Posix.IO.close oldchildin;
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Posix.IO.dup2{old = oldchildout, new = newchildout};
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Posix.IO.close oldchildout;
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(* Run the command. *)
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(* Run this as a shell command. The command and arguments have
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to be a single argument. *)
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Posix.Process.exec("/bin/sh", ["sh", "-c", cmd_args])
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(*Posix.Process.exec(newcmd, args)*)
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end
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(* end case *))
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val _ = TextIO.flushOut TextIO.stdOut
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val pid = (startChild ()) handle ex => (closep(); raise ex)
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val instr = openInFD ("_exec_in", #infd p2)
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val outstr = openOutFD ("_exec_out", #outfd p1)
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val cmd = hd (rev argv)
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in
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(* close the child-side fds *)
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Posix.IO.close (#outfd p2);
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Posix.IO.close (#infd p1);
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(* set the fds close on exec *)
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Posix.IO.setfd (#infd p2, Posix.IO.FD.flags [Posix.IO.FD.cloexec]);
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Posix.IO.setfd (#outfd p1, Posix.IO.FD.flags [Posix.IO.FD.cloexec]);
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(((CMDPROC{
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prover = prover,
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cmd = cmd,
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thmstring = thmstring,
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goalstring = goalstring,
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pid = pid,
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instr = instr,
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outstr = outstr
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})::procList))
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end;
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fun myexecuteInEnv (cmd, argv, env) = let
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val p1 = Posix.IO.pipe ()
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val p2 = Posix.IO.pipe ()
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fun closep () = (
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Posix.IO.close (#outfd p1);
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Posix.IO.close (#infd p1);
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Posix.IO.close (#outfd p2);
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Posix.IO.close (#infd p2)
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)
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fun startChild () =(case Posix.Process.fork()
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of SOME pid => pid (* parent *)
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| NONE => let
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val oldchildin = #infd p1
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val newchildin = Posix.FileSys.wordToFD 0w0
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val oldchildout = #outfd p2
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val newchildout = Posix.FileSys.wordToFD 0w1
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in
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Posix.IO.close (#outfd p1);
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Posix.IO.close (#infd p2);
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Posix.IO.dup2{old = oldchildin, new = newchildin};
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Posix.IO.close oldchildin;
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Posix.IO.dup2{old = oldchildout, new = newchildout};
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Posix.IO.close oldchildout;
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Posix.Process.exece(cmd, argv, env)
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end
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(* end case *))
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val _ = TextIO.flushOut TextIO.stdOut
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val pid = (startChild ()) handle ex => (closep(); raise ex)
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val instr = openInFD ("_exec_in", #infd p2)
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val outstr = openOutFD ("_exec_out", #outfd p1)
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in
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(* close the child-side fds *)
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Posix.IO.close (#outfd p2);
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Posix.IO.close (#infd p1);
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(* set the fds close on exec *)
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Posix.IO.setfd (#infd p2, Posix.IO.FD.flags [Posix.IO.FD.cloexec]);
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Posix.IO.setfd (#outfd p1, Posix.IO.FD.flags [Posix.IO.FD.cloexec]);
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PROC{pid = pid,
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instr = instr,
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outstr = outstr
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}
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end;
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fun myexecuteToList (cmd, argv, procList) = let
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val p1 = Posix.IO.pipe ()
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val p2 = Posix.IO.pipe ()
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val prover = hd argv
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val thmstring = hd(tl argv)
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val goalstring = hd(tl(tl argv))
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val argv = tl (tl (tl(argv)))
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fun closep () = (
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Posix.IO.close (#outfd p1);
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Posix.IO.close (#infd p1);
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Posix.IO.close (#outfd p2);
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Posix.IO.close (#infd p2)
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)
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fun startChild () =(case Posix.Process.fork()
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of SOME pid => pid (* parent *)
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| NONE => let
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val oldchildin = #infd p1
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val newchildin = Posix.FileSys.wordToFD 0w0
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val oldchildout = #outfd p2
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val newchildout = Posix.FileSys.wordToFD 0w1
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in
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Posix.IO.close (#outfd p1);
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Posix.IO.close (#infd p2);
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Posix.IO.dup2{old = oldchildin, new = newchildin};
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Posix.IO.close oldchildin;
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Posix.IO.dup2{old = oldchildout, new = newchildout};
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Posix.IO.close oldchildout;
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Posix.Process.exec(cmd, argv)
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end
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(* end case *))
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val _ = TextIO.flushOut TextIO.stdOut
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val pid = (startChild ()) handle ex => (closep(); raise ex)
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val instr = openInFD ("_exec_in", #infd p2)
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val outstr = openOutFD ("_exec_out", #outfd p1)
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val cmd = hd (rev argv)
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in
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(* close the child-side fds *)
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Posix.IO.close (#outfd p2);
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Posix.IO.close (#infd p1);
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(* set the fds close on exec *)
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Posix.IO.setfd (#infd p2, Posix.IO.FD.flags [Posix.IO.FD.cloexec]);
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Posix.IO.setfd (#outfd p1, Posix.IO.FD.flags [Posix.IO.FD.cloexec]);
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(((CMDPROC{
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prover = prover,
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cmd = cmd,
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thmstring = thmstring,
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goalstring = goalstring,
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pid = pid,
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instr = instr,
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outstr = outstr
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})::procList))
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end; |