I haven't looked at your problem carefully, but throw out the following
ideas (vague recollections rather than rigorous knowledge).
Windows 32bit 4gb address space is first divided in 2 with 1/2 for the
OS and 1/2 for the application. This sets an upper bound of 2gb for the
user mapping space. Lots of things cut into this available address space
(all your other J stuff for example) and it isn't too surprising that
1gb mapping works and that 1.6 fails.
Linux has a more generous address space available (perhaps 3gb) for the
application and it isn't surprising that 1.6gb works.
You could experiment a bit more to see more closely what the limit is in
windows and linux.
You could try a web search (msdn) for detailed information on the
windows user address space.
It might be time for you to look at a 64 bit system :)
----- Original Message -----
From: "Xu Zuoqian" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, August 30, 2006 5:14 AM
Subject: [Jbeta] huge memory map file share problem in the windows v
beta
On a win2k server sp4 machine(2G mem+2G pagefile.sys),after creating a
1.6G memory map file using "createjmf_jmf_ DATAFILE;1600000000 ",when
running "map_jmf_ 'hqdata';DATAFILE;DATAFILE", it asserts "|bad view:
assert | 'bad view' assert 0[free fh,mh,0",but on a 1G mmap file
'map_jmf_' is ok.
however, 'share_jmf_ 'D_z_';DATAFILE' asserts "|assertion failure:
assert
| assert 0[CloseHandleR mh[CloseHandleR fh['bad view'" on this
1G file.The same file is all ok on another linux box(512M mem+1G
swap).
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