RCGwoda's Feed - Programmer's Heaven

static function storage

Sun, 06 Mar 2011 05:15:14 -0700

Posted a 'new message on the C and C++ forum.

hi all,

1 question

where is static function stored in memory..

lets say memory is organised like th is

------------
STACK
------------
HEAP
------------
.BSS (Uninitiazed varaibles)
------------
data section (initialized,global and static variables)
------------
text section (program code)
-----------

Thanks
R.C.Gwoda

Interrupt latency

Sun, 06 Mar 2011 05:12:11 -0700

Posted a 'new message on the Embedded / RTOS forum.

Hi all,

i have below questions ..can some please answer these questions.

What is interrupt latency?
How you can optimize it?

Thanks
Gwoda

Re: Mailboxes vs Message queues

Thu, 16 Dec 2010 03:31:00 -0700

Posted a 'reply on the Embedded / RTOS forum.

Adding further,
i wanted
1. latency difference between Msg queue and Mailbox.
2. Assuming 1 Multi-Core Processors having two cores A and B, which one should be used.
a. between cores, which is best way to communicate.
b. within core and between its threads, best way to communicate

Mailboxes vs Message queues

Thu, 16 Dec 2010 03:13:07 -0700

Posted a 'new message on the Embedded / RTOS forum.

Hi all,
I wanted to check, which is the best option to make two different threads interact. Lets say i have 2 task A_task and B_task. A is at highest priority to B_task. Lets say i have to send few data parameters from A to B.

there are 2 approaches
1. send message to queue and maintain message queue.
2. Have data in global memory, post only mail box and the receiving thread needs to pick up pointer from mail box and retrieve data from shared global memory.

under what constraints, conditions, do we need to approach
1. Message queues
2. Mailboxes