Shared memory in HPUX

10 More Discussions You Might Find Interesting

1. Programming

Shared library with acces to shared memory.

Hello. I am new to this forum and I would like to ask for advice about low level POSIX programming. I have to implement a POSIX compliant C shared library. A file will have some variables and the shared library will have some functions which need those variables. There is one special...

2. UNIX for Dummies Questions & Answers

ulimit (memory) HPUX

Hi all, I am setting the memory allocation to 3GB for each user on HPUX 11.23. I have added ulimit -m 3145728 into the profiles for root and user "X". When I do ulimit -a for each user I get conflicting values: user root: memory(kbytes) 3145728 user "X": memory(kbytes) ...

3. Programming

Shared memory for shared library

I am writing a shared library in Linux (but compatible with other UNIXes) and I want to allow multiple instances to share a piece of memory -- 1 byte is enough. What's the "best" way to do this? I want to optimize for speed and portability. Obviously, I'll have to worry about mutual exclusion.

4. HP-UX

need help in working with shared libraries on hpux

hi, i am having problem loading multiple shared libraries. if i load, make call to exposed method and then unload them, everything workds fine, but i have to keep the loaded images in memory, i am uploading the prog. as loader.zip, it contains loader - loader.c which loads c++ shared...

5. HP-UX

How can I get HPUX memory?

Hello! I need to know the HPUX RAM memory (used & free). When I use the "top" command, I get three values: <<Memory: 284372K (135276K) real, 236604K (140740K) virtual, 600220K free>> What does it mean the number in brackets? And... Is it RAM Memory? Thx in advance!

6. Programming

Shared memory in shared library

I need to create a shared library to access an in memory DB. The DB is not huge, but big enough to make it cumbersome to carry around in every single process using the shared library. Luckily, it is pretty static information, so I don't need to worry much about synchronizing the data between...

7. Programming

memory sharing - not shared memory -

hi, this is the problem: i want to swap a linked list between 4 processes (unrelated), is there any way i can do that just by sending a pointer to a structure? //example typedef struct node { int x; char c; struct node *next; } node; or i should send the items ( x,c ) by...

8. Linux

all about shared memory

Hi all :confused: , I am new to unix.I have been asked to implement shared memory in user's mode.What does this mean?What is the difference it makes in kernel mode and in users mode?What are the advantages of this impemenation(user's mode)? And also i would like to know why exactly shared...

9. UNIX for Advanced & Expert Users

Shared memory shortage but lots of unused memory

I am running HP-UX B.11.11. I'm increasing a parameter for a database engine so that it uses more memory to buffer the disk drive (to speed up performance). I have over 5GB of memory not being used. But when I try to start the DB with the increased buffer parameter I get told. "Not...

10. HP-UX

how to access a windows shared drive from HPUX?

Dear Unix Gurus, I am very very new to UNIX. Apreciate your advice/guidence on the following. I have a HPUX machine and i want to copy some files from this machines to a windows shared drive. I am not sure how to go about it. To my little knowledge i think it is not straight...

LEARN ABOUT HPUX

cpio

cpio(4) 						     Kernel Interfaces Manual							   cpio(4)

NAME

       cpio - format of cpio archive

DESCRIPTION

       The header structure, when the option of is not used (see cpio(1)), is:

       When the option is used, the header information is described by:

       Longtime  and Longfile are equivalent to and respectively.  The contents of each file are recorded together with other items describing the
       file.  Every instance of contains the constant 070707 (octal).  The items through have meanings explained in stat(2).  The  length  of  the
       null-terminated path name including the null byte, is given by

       The last record of the archive always contains the name Directories and the trailer are recorded with equal to zero.

       It  will not always be the case that and correspond to the results of but the values are always sufficient to tell whether two files in the
       archive are linked to each other.

       When a device special file is archived by HP-UX (using the option), contains a magic constant which is dependent  upon  the  implementation
       doing  the writing.  flags the device file as an HP-UX 32-bit device specifier, and contains the 32-bit device specifier (see stat(2)).	If
       the option is not present, special files are not archived or restored.  Non-HPUX device special files are never restored.

SEE ALSO

       cpio(1), find(1), stat(2).

STANDARDS CONFORMANCE

																	   cpio(4)

HP-UX