How to allocate memory for a process?

Question

QNX

Guys, please tell me how to measure the maximum amount of memory that the system can allocate for a process? Can the system allocate more than one page for a process?

Answer 1

Can the system allocate more than one page for a process?

The most common memory page size is 4 kilobytes. Many applications eat gigabytes of memory. Conclusion - maybe.
If restrictions are not explicitly set, then all available (I can not vouch for QNX). But available memory on multitasking systems is not constant. Applications running in the background can allocate and deallocate memory over time.
Here, of course, it is worth mentioning PAE, when the kernel has access to all memory, and applications only to 4 gigabytes.