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virtual file in shared memory?

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sgsoft
Posts: 34
Joined: 03 Jul 2010, 12:26

virtual file in shared memory?

Postby sgsoft » 07 Jun 2012, 17:06

Can I creates a virtual file with the contents located in the shared memory ?

like this:

Code: Select all


File f("/tmp/foo.db3");
SharedMemory(f,AM_READ|AM_WRITE);
.....



above shared memory mapped file can be access by another process?

alex
Posts: 1212
Joined: 11 Jul 2006, 16:27
Location: United_States

Re: virtual file in shared memory?

Postby alex » 08 Jun 2012, 04:37

It depends. EG:
The Single UNIX ® Specification, Version 2 wrote:It is unspecified whether the name appears in the file system and is visible to other functions that take pathnames as arguments.


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