new venti library.

src/libventi/conn.c

@@ -0,0 +1,36 @@
+#include <u.h>
+#include <libc.h>
+#include <venti.h>
+#include "queue.h"
+
+VtConn*
+vtconn(int infd, int outfd)
+{
+	VtConn *z;
+
+	z = vtmallocz(sizeof(VtConn));
+	z->tagrend.l = &z->lk;
+	z->rpcfork.l = &z->lk;
+	z->infd = infd;
+	z->outfd = outfd;
+	z->part = packetalloc();
+	return z;
+}
+
+void
+vtfreeconn(VtConn *z)
+{
+	vthangup(z);
+	qlock(&z->lk);
+	for(;;){
+		if(z->readq)
+			_vtqhangup(z->readq);
+		else if(z->writeq)
+			_vtqhangup(z->writeq);
+		else
+			break;
+		rsleep(&z->rpcfork);
+	}
+	packetfree(z->part);
+	vtfree(z);
+}