mremap with MREMAP_NOMOVE always return MFAIL with errno 12 Understanding mremap with MREMAP NOMOVE Returning MFAIL with errno 12 In the realm of Linux memory management the mremap system call plays a crucial role in res 2 min read 29-09-2024 12
Invalid pointer address after mmap (uio) Understanding the Invalid Pointer Address After mmap uio Issue In the realm of programming especially within systems programming and driver development encounte 3 min read 26-09-2024 16
mmap returns MAP_FAILED trying to write structs in C Understanding MAP FAILED in mmap When Writing Structs in C The mmap function in C is a powerful tool that allows you to map files or devices into memory However 3 min read 26-09-2024 15
How to measure user time and system time for very fast function like mmap() in C? Measuring User Time and System Time for Fast Functions like mmap in C When developing performance critical applications in C it is crucial to accurately measure 3 min read 21-09-2024 17
Properly allocating a memory region and accessing the underlying hardware addresses Mastering Memory Allocation and Direct Hardware Access Direct access to hardware addresses offers immense power and control enabling tasks like low level device 3 min read 13-09-2024 25
Does madvise(___, ___, MADV_DONTNEED) instruct the OS to lazily write to disk? Understanding madvise MADV DONTNEED for Lazy Disk Writes Lets examine how madvise MADV DONTNEED interacts with file I O in the context of large sequential file 2 min read 06-09-2024 37
use mmap in C to write into memory. Leveraging mmap for Efficient Memory Mapped File I O in C Memory mapped files facilitated by the mmap function in C offer a powerful way to interact with files 3 min read 06-09-2024 24
mmap File-backed mapping vs Anonymous mapping in Linux File Backed vs Anonymous Memory Mapping in Linux A Deep Dive Memory mapping is a powerful technique in Linux that allows processes to directly access data in me 3 min read 06-09-2024 19
How to ensure there is only one process have write acesss to mmap? Securing Your Mmap Ensuring Exclusive Write Access in Multi Process Environments The mmap function in Unix like systems provides a powerful way to share memory 3 min read 30-08-2024 19
Allocating user space buffer in kernel module fails Allocating User Space Buffer in Kernel Module A Comprehensive Guide This article delves into the challenges of allocating user space buffers from kernel modules 2 min read 30-08-2024 12
Is it possible to allocate memory with mmap that OS can free as needed? Can You Tell the OS to Free Your mmap Memory Have you ever wondered if theres a way to let the Linux operating system OS manage your applications memory cache Y 3 min read 30-08-2024 15
How does mmap'ed eBPF map shared between processes synchronizes operations? Demystifying Shared e BPF Map Synchronization A Deep Dive into mmap ed Array Maps e BPF Extended Berkeley Packet Filter has become a powerful tool for user spac 2 min read 29-08-2024 25