X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=TODO;h=3d3207cbe93329bf20d6826e2517651b565323bc;hb=73c688e4fd904d8d7121440424c9034244a348cd;hp=f02d750548fb15914974bcd99d7515bcb8efb49c;hpb=c37b82251bbe85edf2d46284f6d4b43b92b09182;p=pintos-anon

diff --git a/TODO b/TODO
index f02d750..3d3207c 100644
--- a/TODO
+++ b/TODO
@@ -1,54 +1,69 @@
 -*- text -*-
 
-* Code:
+* Put time limits on tests.
 
-  - Speed up disk routines: filling an 8 MB disk takes a long time.
-    (They're only slow because timer_sleep always waits for at least
-    one timer tick.)
+* `make grade'
 
-  - userprog project should mark read-only pages as actually read-only
-    in the page table.  Or, since this was consistently rated as the
-    easiest project by the students, require them to do it.
+* We need better and more example programs.
 
-  - For userprog project, don't provide per-process pagedir
-    implementation but only single-process implementation and require
-    students to implement the separation?  This project was rated as
-    the easiest after all.  Alternately we could just remove the
-    synchronization on pid selection and check that students fix it.
+  - Need an mmap example program as a replacement for the crappy mmap FAQ
+    question.
 
-* Documentation:
+* Give advice on how to use `diff' to find out what has changed
 
-  - Finish writing tour.
+* pintos script doesn't (always?) delete temp disks
 
-  - Add "Digging Deeper" sections that describe the nitty-gritty x86
-    details for the benefit of those interested.
+* GNU make 3.80 or later is required.
 
-* Assignments:
+* Finish writing tour.
 
-  - Add extra credit:
 
-    . Low-level x86 stuff, like paged page tables.
 
-    . Other good ideas.
 
-  - The semantics of the join system call should change so that it
-    only returns the exit code once.
 
-  - mmap/munmap should use segment IDs like Nachos.  Too hard
-    otherwise.
+* process_death test needs improvement
 
-  - Add src/testcases/vm, src/testcases/filesys and make it clear to use
-    them?
+* Internal tests.
 
-* Tests:
+* Improve automatic interpretation of exception messages.
 
-  - Release some of them.
+* Userprog project:
+
+  - Mark read-only pages as actually read-only in the page table.  Or,
+    since this was consistently rated as the easiest project by the
+    students, require them to do it.
+
+  - Don't provide per-process pagedir implementation but only
+    single-process implementation and require students to implement
+    the separation?  This project was rated as the easiest after all.
+    Alternately we could just remove the synchronization on pid
+    selection and check that students fix it.
+
+* Filesys project:
+
+  - Need a better way to measure performance improvement of buffer
+    cache.  Some students reported that their system was slower with
+    cache--likely, Bochs doesn't simulate a disk with a realistic
+    speed.
+
+* Documentation:
 
-  - The threads, userprog, vm test source files could use
-    factorization and cleanup along the lines of fslib in the filesys
-    tests.
+  - Add "Digging Deeper" sections that describe the nitty-gritty x86
+    details for the benefit of those interested.
+
+  - Add explanations of what "real" OSes do to give students some
+    perspective.
+
+* Assignments:
+
+  - Add extra credit:
+
+    . Low-level x86 stuff, like paged page tables.
+
+    . Specifics on how to implement sbrk, malloc.
+
+    . Other good ideas.
 
-  - The p1-4.c testcase needs significant tuning.  Currently it takes
-    too long (especially when SHOW_PROGRESS is turned on) and doesn't
-    show significant improvement.
+    . opendir/readdir/closedir
 
+    . everything needed for getcwd()