X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=curveopt.py;fp=curveopt.py;h=e07e7250626349cd37838000d81881ba3ff90460;hb=7dee260ab0c5dcca005f532adcd0ee6e6547bb5f;hp=87438895f199d5a34d028f03a1294fe0bae51afe;hpb=b1e11931c2100a068f61c54c5b11506e77c4333b;p=moebius3.git

diff --git a/curveopt.py b/curveopt.py
index 8743889..e07e725 100644
--- a/curveopt.py
+++ b/curveopt.py
@@ -64,6 +64,14 @@ class OptimisedCurve():
     print(s, file=subproc.stdin)
     subproc.stdin.flush()
 
+    oc.subproc = subproc
+    oc.nt = nt
+
+  def _await_subproc(oc):
+    subproc = oc.subproc
+    if subproc is None: return
+
+    dbg('(awaiting)')
     commentary = ''
 
     while True:
@@ -87,14 +95,15 @@ class OptimisedCurve():
     subproc.stdin.close()
     subproc.wait()
     assert(subproc.returncode == 0)
+    oc.subproc = None
 
-    oc.nt = nt
     oc._result = np.reshape(findcurve_result, (-1,3), 'C')
     dbg(repr(oc._result))
 
     vdbg().curve( oc.point_at_t )
 
   def point_at_it(oc, it):
+    oc._await_subproc()
     dbg(repr((it,)))
     return oc._result[it]