Date: Sun, 18 Jun 2000 23:06:24 -0700 From: "Shawn Workman" <shawn@holdenz.com> To: <freebsd-hackers@freebsd.org> Subject: Sharing memory between processes. Message-ID: <007301bfd9b4$8018c1b0$b2a612d8@hayden>
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Hello,
I am coming up against a road block in porting an application from a =
win32 platform to FreeBSD. The problem I am having is due to the fact =
that FreeBSD protects it's memory more that NT for example.
Is there a way to give a client app access to another apps memory? =
the way it is done in the win32 app is to basically have the client =
check for the existance of the server if it exists it grabs a pointer to =
it's memory and therefore gains access to all the functions that the =
server has in memory as well as data structures.
Is there anyway to do this using FreeBSD 4.0 Stable? =20
I have used the shm* functions and from what I see I am limited to =
the number of shared memory pointers I can have.
I would really appreciate any help that could be provided here. I =
have been looking at the possibility of an lkm but hear that this can =
cause the system to become unstable..
Thank you for any insight to this problem.
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<HTML><HEAD>
<META content=3D"text/html; charset=3Diso-8859-1" =
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<DIV><FONT face=3DArial size=3D2>Hello,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2> I am coming up =
against a road=20
block in porting an application from a win32 platform to FreeBSD. =
The=20
problem I am having is due to the fact that FreeBSD protects it's memory =
more=20
that NT for example.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2> Is there a way to =
give a client=20
app access to another apps memory? the way it is done in the win32 =
app is=20
to basically have the client check for the existance of the server if it =
exists=20
it grabs a pointer to it's memory and therefore gains access to all the=20
functions that the server has in memory as well as data =
structures.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2> Is there anyway to =
do this using=20
FreeBSD 4.0 Stable? </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2> I have used the shm* =
functions=20
and from what I see I am limited to the number of shared memory pointers =
I can=20
have.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2> I would really =
appreciate any=20
help that could be provided here. I have been looking at the =
possibility=20
of an lkm but hear that this can cause the system to become=20
unstable..</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Thank you for any insight to this=20
problem.</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV></BODY></HTML>
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