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2 sty 2023 · Overview on Linux Memory Management. Understanding Virtual Memory. What is memory over-allocation (over-commitment) and OOM? Understanding and Monitoring Page Cache. How does kernel perform disk read write operation? What is the advantage of keeping page cache? Understanding Dirty Page. How dirty pages are flushed or written back to disk?
24 paź 2023 · In this comprehensive tutorial, I‘ll be sharing everything you need to know to master mmap() on Linux systems. We‘ll cover: What is mmap () and how it works under the hood. All about the mmap () function parameters. Common usage examples with code snippets. Memory mapped file I/O. Shared memory between processes. Anonymous memory allocation.
3 mar 2014 · The mmap() function can be used to allocate memory buffers with highly customizable parameters to control access and permissions, and to back them with file-system storage if necessary. The following function creates an in-memory buffer that a process can share with its children:
Memory Management in C - One of the important characteristics of C is that the compiler manages how the memory is allocated to the variables declared in the code. Once the compiler allocates the required bytes of memory, it cannot be changed during the runtime.
6. Stack and Heap. Understand the difference between allocating memory on the stack and the heap. 7. Advanced Pointers. Let's practice some more advanced pointer concepts - like pointers to pointers. 8. Stack Data Structure. Build a stack in C using structs and pointers and understand where the memory is allocated.
16 lis 2004 · malloc: This allocates a given number of bytes and returns a pointer to them. If there isn't enough memory available, it returns a null pointer.
Linux has to deal with two shortcomings of hardware with respect to memory addressing: Some hardware devices can perform DMA (direct memory access) to only certain memory addresses.
