diff options
Diffstat (limited to 'lib/system/bitmasks.nim')
| -rw-r--r-- | lib/system/bitmasks.nim | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/lib/system/bitmasks.nim b/lib/system/bitmasks.nim index d7c55a4d9..0663247c2 100644 --- a/lib/system/bitmasks.nim +++ b/lib/system/bitmasks.nim @@ -10,13 +10,18 @@ # 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 # \ - # my tests showed no improvements for using larger page sizes. + PageShift = when defined(nimPage256) or defined(cpu16): 3 + elif defined(nimPage512): 9 + elif defined(nimPage1k): 10 + else: 12 # \ # my tests showed no improvements for using larger page sizes. + PageSize = 1 shl PageShift PageMask = PageSize-1 + MemAlign = # also minimal allocatable memory block - when defined(useMalloc): + when defined(nimMemAlignTiny): 4 + elif defined(useMalloc): when defined(amd64): 16 else: 8 else: 16 |