From 7966faa931bfa9cf4ca53dd2d5b6e1eb0f174411 Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Thu, 23 Sep 2004 03:01:36 +0000
Subject: Continue fighting pthreads. Clean up thread library a bit too.

---
 src/libthread/exec.c | 82 ----------------------------------------------------
 1 file changed, 82 deletions(-)
 delete mode 100644 src/libthread/exec.c

(limited to 'src/libthread/exec.c')

diff --git a/src/libthread/exec.c b/src/libthread/exec.c
deleted file mode 100644
index 0fb68111..00000000
--- a/src/libthread/exec.c
+++ /dev/null
@@ -1,82 +0,0 @@
-#include "threadimpl.h"
-
-#define PIPEMNT	"/mnt/temp"
-
-void
-procexec(Channel *pidc, int fd[3], char *prog, char *args[])
-{
-	int n;
-	Proc *p;
-	Thread *t;
-
-	_threaddebug(DBGEXEC, "procexec %s", prog);
-	/* must be only thread in proc */
-	p = _threadgetproc();
-	t = p->thread;
-	if(p->threads.head != t || p->threads.head->nextt != nil){
-		werrstr("not only thread in proc");
-	Bad:
-		if(pidc)
-			sendul(pidc, ~0);
-		return;
-	}
-
-	/*
-	 * We want procexec to behave like exec; if exec succeeds,
-	 * never return, and if it fails, return with errstr set.
-	 * Unfortunately, the exec happens in another proc since
-	 * we have to wait for the exec'ed process to finish.
-	 * To provide the semantics, we open a pipe with the 
-	 * write end close-on-exec and hand it to the proc that
-	 * is doing the exec.  If the exec succeeds, the pipe will
-	 * close so that our read below fails.  If the exec fails,
-	 * then the proc doing the exec sends the errstr down the
-	 * pipe to us.
-	 */
-	if(bind("#|", PIPEMNT, MREPL) < 0)
-		goto Bad;
-	if((p->exec.fd[0] = open(PIPEMNT "/data", OREAD)) < 0){
-		unmount(nil, PIPEMNT);
-		goto Bad;
-	}
-	if((p->exec.fd[1] = open(PIPEMNT "/data1", OWRITE|OCEXEC)) < 0){
-		close(p->exec.fd[0]);
-		unmount(nil, PIPEMNT);
-		goto Bad;
-	}
-	unmount(nil, PIPEMNT);
-
-	/* exec in parallel via the scheduler */
-	assert(p->needexec==0);
-	p->exec.prog = prog;
-	p->exec.args = args;
-	p->exec.stdfd = fd;
-	p->needexec = 1;
-	_sched();
-
-	close(p->exec.fd[1]);
-	if((n = read(p->exec.fd[0], p->exitstr, ERRMAX-1)) > 0){	/* exec failed */
-		p->exitstr[n] = '\0';
-		errstr(p->exitstr, ERRMAX);
-		close(p->exec.fd[0]);
-		goto Bad;
-	}
-	close(p->exec.fd[0]);
-	close(fd[0]);
-	if(fd[1] != fd[0])
-		close(fd[1]);
-	if(fd[2] != fd[1] && fd[2] != fd[0])
-		close(fd[2]);
-	if(pidc)
-		sendul(pidc, t->ret);
-
-	/* wait for exec'ed program, then exit */
-	_schedexecwait();
-}
-
-void
-procexecl(Channel *pidc, int fd[3], char *f, ...)
-{
-	procexec(pidc, fd, f, &f+1);
-}
-
-- 
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