Use runtime options instead of conditional compilation for MLFQS,

[pintos-anon] / TODO

diff --git a/TODO b/TODO
index ac46639a58fe89733ad6889dfd728a1a262e80e8..151b6763f94f7a470b35b5442ecfbb6cdc0c2ca2 100644 (file)
--- a/TODO
+++ b/TODO
@@ -7,13 +7,10 @@
   - Need an mmap example program as a replacement for the crappy mmap FAQ
     question.
 
   - Need an mmap example program as a replacement for the crappy mmap FAQ
     question.
 

-* Make it clear that the students own their code, because there was some
-  confusion on that point.
+  - How about `diff' and `cmp' programs?

 
 * Threads:
 
 
 * Threads:
 

-  - join-invalid doesn't compile if tid_t is not scalar type.
-

   - mlfqs tests suck.  They aren't even correct, e.g. the amarv
     submission from win0405 is graded incorrectly.
 
   - mlfqs tests suck.  They aren't even correct, e.g. the amarv
     submission from win0405 is graded incorrectly.
 


@@ -25,12 +22,6 @@
     project 3 and in real OSes.  Also revise the grading criteria to
     match.
 
     project 3 and in real OSes.  Also revise the grading criteria to
     match.
 

-  - Move `join' implementation here, from `threads' project, to help
-    normalize the project difficulties.
-
-  - The semantics of the join system call should change so that it
-    only returns the exit code once.
-

   - 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.
   - 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.


@@ -59,14 +50,17 @@
 
     Alternatively, shrink the inode size.
 
 
     Alternatively, shrink the inode size.
 

-  - Add mkdir and ls example user programs.
-

   - Add option to disable buffer cache.
 
   - Add option to disable buffer cache.
 

-  - Get rid of "dump" commands--they're not really useful.
-

   - Sample solution.
 
   - Sample solution.
 

+  - 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.
+
+  - Clarify effect of remove(cwd).
+

 * Documentation:
 
   - Finish writing tour.
 * Documentation:
 
   - Finish writing tour.


@@ -87,6 +81,10 @@
 
     . Other good ideas.
 
 
     . Other good ideas.
 

+    . opendir/readdir/closedir
+
+    . everything needed for getcwd()
+

   - Add src/testcases/vm, src/testcases/filesys and make it clear to use
     them?
 
   - Add src/testcases/vm, src/testcases/filesys and make it clear to use
     them?
 


@@ -102,3 +100,18 @@
     too long (especially when SHOW_PROGRESS is turned on) and doesn't
     show significant improvement.
 
     too long (especially when SHOW_PROGRESS is turned on) and doesn't
     show significant improvement.
 

+* Code:
+
+  - Make threads test use a program and arguments like the other
+    projects.
+
+  - Revise command-line arguments for sensibility instead of for
+    Nachos compatibility.
+
+  - Get rid of all compile-time flags, e.g. MLFQS should be a runtime
+    command-line option.
+
+  - Need an optimization barrier and an explanation of it in the
+    documentation.
+
+  - Need to check the wait system call more thoroughly.