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Patch #1407135, bug #1424041, make mmap.mmap(-1, length) work the same

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on both Unix (SVR4 and BSD) and Windows.  Restores behaviour of passing -1
for anonymous memory on Unix.  Use MAP_ANONYMOUS instead of _ANON since
the latter is deprecated according to Linux (gentoo) man pages.

Should we continue to allow mmap.mmap(0, length) to work on Windows?
0 is a valid fd.

Will backport bugfix portions.
This commit is contained in:
Neal Norwitz 2006-02-05 05:45:43 +00:00
parent d1cfc8ade1
commit 0e6bc8c260
5 changed files with 68 additions and 13 deletions
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3
Doc/lib/libmmap.tex
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@ -37,7 +37,8 @@ taken from the specified file. Assignment to an
exception. Assignment to an \constant{ACCESS_WRITE} memory map
affects both memory and the underlying file. Assignment to an
\constant{ACCESS_COPY} memory map affects memory but does not update
the underlying file.
the underlying file. \versionchanged[To map anonymous memory,
-1 should be passed as the fileno along with the length]{2.5}
\begin{funcdesc}{mmap}{fileno, length\optional{, tagname\optional{, access}}}
\strong{(Windows version)} Maps \var{length} bytes from the file