X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/agedu/blobdiff_plain/9c6e61f23dd65086378606be16d3740d909477d4..f59a5d3459678d4a4e9d9c9beecbfd0a53035894:/TODO

diff --git a/TODO b/TODO
index 0cd19f8..6549737 100644
--- a/TODO
+++ b/TODO
@@ -1,13 +1,31 @@
 TODO list for agedu
 ===================
 
-Future possibilities:
+ - we should munmap in all operating modes where we mmapped,
+   otherwise chaining them will run out of address space
 
- - integrate more usefully with the output of configure. It's
-   generating oodles of automatic boilerplate in config.h and I'm
-   sure three quarters of it _ought_ to be usable to add
-   portability, if only I had the gumption to actually pay attention
-   to all those HAVE_FOO macros it's defined for me.
+ - we could still be using more of the information coming from
+   autoconf. Our config.h is defining a whole bunch of HAVE_FOOs for
+   particular functions (e.g. HAVE_INET_NTOA, HAVE_MEMCHR,
+   HAVE_FNMATCH). We could usefully supply alternatives for some of
+   these functions (e.g. cannibalise the PuTTY wildcard matcher for
+   use in the absence of fnmatch, switch to vanilla truncate() in
+   the absence of ftruncate); where we don't have alternative code,
+   it would perhaps be polite to throw an error at configure time
+   rather than allowing the subsequent build to fail.
+    + however, I don't see anything here that looks very
+      controversial; IIRC it's all in POSIX, for one thing. So more
+      likely this should simply wait until somebody complains.
+
+ - it would be useful to support a choice of indexing strategies.
+   The current system's tradeoff of taking O(N log N) space in order
+   to be able to support any age cutoff you like is not going to be
+   ideal for everybody. A second more conventional mechanism which
+   allows the user to specify a number of fixed cutoffs and just
+   indexes each directory on those alone would undoubtedly be a
+   useful thing for large-scale users. This will require
+   considerable thought about how to make the indexers pluggable at
+   both index-generation time and query time.
 
  - IPv6 support in the HTTP server
     * of course, Linux magic auth can still work in this context; we