Parially freeing the memory in the c++

[syedshan]

Dear all,

In my program I am communicating with FPGA and for proper communication I am stuck to allocating very large memory during calling data from FPGA to computer through PCIe.

One way I thought is to partially free the initial bytes of data. For example If I allocate 50 M-Byte or even slightly more, of memory (which is LOOOOOTTTT), hence I plan to free 4096 Bytes each time that data is fetched and stored in file. This way at least some of the memory is free for other programs to run...

I check on internet and it seems that it is not possible the easy way... see here

But Is there any method to do so...

BY-THE-WAY the problem arise since I am triggering my FPGA based DAQ through external trigger, but because of software limitations and storing data in files, some triggers are missed, hence data acquisition is not correct. So I thought to store data in files later after all data is acquired, but then memory problem occurs....So this I thought as the solution.
I have this exact question in the FPGA forum of edaboard as well... ^^... cheers

Bests,
Shan