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CVS patch #477161: New "access" keyword for mmap, from Jay T Miller.

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This gives mmap() on Windows the ability to create read-only, write-
through and copy-on-write mmaps.  A new keyword argument is introduced
because the mmap() signatures diverged between Windows and Unix, so
while they (now) both support this functionality, there wasn't a way to
spell it in a common way without introducing a new spelling gimmick.
The old spellings are still accepted, so there isn't a backward-
compatibility issue here.
This commit is contained in:
Tim Peters 2001-11-13 23:11:19 +00:00
parent afeb2a4d89
commit 5ebfd36afa
5 changed files with 411 additions and 144 deletions
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13
Lib/test/output/test_mmap
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@ -17,4 +17,17 @@ test_mmap
Try to seek beyond end of mmap...
Try to seek to negative position...
Attempting resize()
Creating 10 byte test data file.
Opening mmap with access=ACCESS_READ
Ensuring that readonly mmap can't be slice assigned.
Ensuring that readonly mmap can't be item assigned.
Ensuring that readonly mmap can't be write() to.
Ensuring that readonly mmap can't be write_byte() to.
Ensuring that readonly mmap can't be resized.
Opening mmap with access=ACCESS_WRITE
Modifying write-through memory map.
Opening mmap with access=ACCESS_COPY
Modifying copy-on-write memory map.
Ensuring copy-on-write maps cannot be resized.
Ensuring invalid access parameter raises exception.
Test passed