> i have the following situation: a process has data that is (for now)
> stored in a linked list. this data changes and rearranges. the problem
> is that i want a number of processes to access this data. i thought of
> shared memory but i have trouble accessing a struct allocated by the
> first process from other processes. does any one have an idea of how to
> 'publicize' a dynmic list between processes in any way?

> > i have the following situation: a process has data that is (for now)
> > stored in a linked list. this data changes and rearranges. the problem
> > is that i want a number of processes to access this data. i thought of
> > shared memory but i have trouble accessing a struct allocated by the
> > first process from other processes. does any one have an idea of how to
> > 'publicize' a dynmic list between processes in any way?

> Hi Shadi,

> You should consider that ANSI-C has no support for multiprocessing (or
> multithreading) and therefore does not support interprocess communication
> or data sharing mechanisms. All these things are inherently system
> specific and unportable. You should inquire in a newsgroup where your
> specific system is on topic. Here's a list of some popular systems that
> support multiprocessing:

> Generally what you can do is either use shared memory and a semaphore
> mechanism (some systems support this with special instructions) or use
> communication connections to send the data from one process to another
> (like pipes or sockets or links).

> Stephan
> (initiator of the campaign against grumpiness in c.l.c)
> (-: A brandnew excellent FAQ version has been released !!! :-)
> (-: Get it: http://www.eskimo.com/~scs/C-faq/versions.html :-)

> > i have the following situation: a process has data that is (for now)
> > stored in a linked list. this data changes and rearranges. the problem
> > is that i want a number of processes to access this data. i thought of
> > shared memory but i have trouble accessing a struct allocated by the
> > first process from other processes. does any one have an idea of how to
> > 'publicize' a dynmic list between processes in any way?

> Generally what you can do is either use shared memory and a semaphore
> mechanism (some systems support this with special instructions) or use
> communication connections to send the data from one process to another
> (like pipes or sockets or links).

> > > i have the following situation: a process has data that is (for now)
> > > stored in a linked list. this data changes and rearranges. the problem
> > > is that i want a number of processes to access this data. i thought of
> > > shared memory but i have trouble accessing a struct allocated by the
> > > first process from other processes. does any one have an idea of how
to
> > > 'publicize' a dynmic list between processes in any way?

> > Generally what you can do is either use shared memory and a semaphore
> > mechanism (some systems support this with special instructions) or use
> > communication connections to send the data from one process to another
> > (like pipes or sockets or links).

> The main issue though is how to handle the dynamic nature of the data
> structure in shared memory.

>> > i have the following situation: a process has data that is (for now)
>> > stored in a linked list. this data changes and rearranges. the problem
>> > is that i want a number of processes to access this data. i thought of
>> > shared memory but i have trouble accessing a struct allocated by the
>> > first process from other processes. does any one have an idea of how to
>> > 'publicize' a dynmic list between processes in any way?

>> Generally what you can do is either use shared memory and a semaphore
>> mechanism (some systems support this with special instructions) or use
>> communication connections to send the data from one process to another
>> (like pipes or sockets or links).

>The main issue though is how to handle the dynamic nature of the data
>structure in shared memory.