WebFeb 12, 2024 · I am trying to write multi-threaded code to read file in fixed chunks using mmap (2) and counts the words. Each thread works on a separate portion of the file, making faster processing of the file. I am able to read the file using mmap (2) single threaded. When the number of threads is more than one, it fails with a segmentation fault. WebNov 15, 2024 · RT-Thread Smart is an open-source microkernel operating system that is aimed primarily at mid to high-end processors with MMU (Memory Management Unit), providing a more competitive operating …
Is it thread-safe using ftruncate + mmap to expand size?
WebRT-Thread has a fast growing software package ecosystem, the core teams of RT-Thread and its community developers have contributed nearly 200 packages which covered a … WebThe mmap system call takes the following parameters: void * mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t offset); To map memory between a device and user space, the user process must open … crownhill bay
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WebNov 14, 2024 · RT-Thread is an open source IoT real-time operating system (RTOS). - rt-thread/avl_adpt.c at master · RT-Thread/rt-thread ... [lwp/user_mm] add user_map_varea for mmap feature * [mm] rename rt_mm_fault_try_fix to rt_aspace_fault_try_fix * [utest/mm] testcase for synchronization * [mm] modify unmap api to improve throughput * [utest/mm ... WebApr 26, 2012 · I'm currently using mmap to allocate the memory: pthread_attr_t ptAttr; pthread_t pth; pthread_attr_init (&ptAttr); void *stack = mmap (NULL, stksize, PROT_WRITE PROT_READ, MAP_ANONYMOUS MAP_SHARED, -1, 0); pthread_attr_setstack (&ptAttr, stack, stksize); pthread_create (&pth,&ptAttr,threadFunc,&info); WebApr 11, 2024 · RT-Thread, short for Real Time-Thread, as its name implies, is an embedded real-time multi-threaded operating system. One of its basic properties is to support multi … building industry association of san diego