17 Jan
2005
17 Jan
'05
4:44 p.m.
John Meacham wrote:
Actually, If I were writing new haskell libraries, I would use mmap whenever I could for accessing files. not only does it make the file pointer problem go away, but it can be drastically more efficient.
I'm not sure this is a good idea, because GHC really needs non-blocking I/O to support its thread model, and memory-mapped I/O always blocks. In fact this is a problem even if we only memory-map files at the programmer's request. -- Ben