cleanup todo.txt

lib/system/mmdisp.nim

@@ -42,7 +42,8 @@ type
 # Page size of the system; in most cases 4096 bytes. For exotic OS or
 # CPU this needs to be changed:
 const
-  PageShift = when defined(cpu16): 8 else: 12
+  PageShift = when defined(cpu16): 8 else: 12 # \
+    # my tests showed no improvments for using larger page sizes.
   PageSize = 1 shl PageShift
   PageMask = PageSize-1
 

tests/fragmentation/tfragment_alloc.nim

@@ -0,0 +1,19 @@
+
+
+
+include system/ansi_c
+
+import strutils, data
+
+proc main =
+  var m = 0
+  for i in 0..1000_000:
+    let size = sizes[i mod sizes.len]
+    let p = alloc(size)
+    if p == nil:
+      quit "could not serve request!"
+    dealloc p
+ #   c_fprintf(stdout, "iteration: %ld size: %ld\n", i, size)
+
+main()
+echo formatSize getOccupiedMem(), " / ", formatSize getTotalMem()

tests/fragmentation/tfragment_gc.nim

@@ -0,0 +1,16 @@
+
+
+
+#include system/ansi_c
+
+import strutils, data
+
+proc main =
+  var m = 0
+  for i in 0..1000_000:
+    let size = sizes[i mod sizes.len]
+    let p = newString(size)
+ #   c_fprintf(stdout, "iteration: %ld size: %ld\n", i, size)
+
+main()
+echo formatSize getOccupiedMem(), " / ", formatSize getTotalMem()

todo.txt

@@ -31,7 +31,6 @@ Not critical for 1.0
 - pragmas need 'bindSym' support
 - pragmas need re-work: 'push' is dangerous, 'hasPragma' does not work
   reliably with user-defined pragmas
-- memory manager: add a measure of fragmentation
 - we need a magic thisModule symbol
 - optimize 'genericReset'; 'newException' leads to code bloat
 
@@ -52,7 +51,6 @@ Bugs
 GC
 ==
 
-- use slightly bigger blocks in the allocator
 - resizing of strings/sequences could take into account the memory that
   is allocated