shared memory - userdefined data structures


 
Thread Tools Search this Thread
Top Forums Programming shared memory - userdefined data structures
# 1  
Old 08-16-2009
shared memory - userdefined data structures

Hello,

I wonder if I can write my userdefined data structures(ex: a list) to a shared memory segment?
I know, the shm functions get (void*) parameter so I should be able to read and write a list into the shared memory.
may someone inform and clarify me about that, please?
# 2  
Old 08-16-2009
Yes you can write a list and/or data structure to shared memory.
Login or Register to Ask a Question

Previous Thread | Next Thread

9 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... (5 Replies)
Discussion started by: iamjag
5 Replies

2. Programming

Signalsafe data structures

Hello, I have a signal handler which manipulates a data structure. The data structure's operations aren't atomic. So if two threads/processes are in a critical section at the same time the data structure will be broken. With threads you can avoid this stuff with semaphores etc. However,... (10 Replies)
Discussion started by: littlegnome
10 Replies

3. Programming

Loading Data in shared memory (C++)

I'll try to keep this short, but basically I need to figure out a way to load data in shared memory (this file will be called load.c) I will later access the data with a print.c program. The "data" is in the form of a student database that looks like this John Blakeman 111223333 560... (7 Replies)
Discussion started by: Mercfh
7 Replies

4. Shell Programming and Scripting

Perl Data Structures

Here is what i need to do. @data #has all column wise data so say info for col 1 location for all rows would be in this array $array = \@data But i need to create a file which should contain these information in a format for all columns even if i have got no values from some of the index... (0 Replies)
Discussion started by: dinjo_jo
0 Replies

5. 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. (0 Replies)
Discussion started by: otheus
0 Replies

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... (12 Replies)
Discussion started by: DreamWarrior
12 Replies

7. Programming

mmap vs shared memory - which is faster for reading data between multiple process

Between mmap and shared memory which is the best method of sharing data between multiple applications, interms of speed? (1 Reply)
Discussion started by: nmds
1 Replies

8. UNIX for Advanced & Expert Users

mmap vs shared memory - which is best for sharing data between applications?

Between mmap and shared memory which is the best method of sharing data between multiple applications, interms of speed? (2 Replies)
Discussion started by: nmds
2 Replies

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... (1 Reply)
Discussion started by: cjcamaro
1 Replies
Login or Register to Ask a Question