Webb7 nov. 2024 · Spinlocks - Part 7. In the last blog post, we looked at yet another implementation of a spinlock (a ticket spinlock). However, most people will never write their own synchronization mechanisms. Instead people will use what is available to them in libraries. In this blog post, we’ll look at a pthread spinlock implementation ( … Webb27 okt. 2015 · Adding ibv_create_cq_ex. This extended verbs follows the extension verbs scheme and hence could be extendible in the future for more features.

Using Spin Locks - Multithreaded Programming Guide

WebbSpin locks are a low-level synchronization mechanism suitable primarily for use on shared memory multiprocessors. When the calling thread requests a spin lock that is already … Webb15 feb. 2013 · ibv_poll_cq() polls Work Completions from a Completion Queue (CQ). A Work Completion indicates that a Work Request in a Work Queue, and all of the … multiplayer online games free play

pthread_spin_lock.c - nptl/pthread_spin_lock.c - Glibc source …

Webb12 apr. 2024 · On my system, sizeof (pthread_spinlock_t) is 4, while sizeof (std::mutex) is 40. They are much more performant than std::mutex, if the protected code region is small and the contention level is low to moderate. On the downside, a poorly implemented spin lock can hog the CPU. WebbAfter polling the completion queue (CQ) and ensuring status field ofstruct ibv_wc has value IBV_WC_SUCCESS, the field byte_len of thestructure seems to be invalid. … Webbstruct ibv_poll_cq_attr *attr, int lock) {struct mlx4_cq *cq = to_mcq (ibv_cq_ex_to_cq (ibcq)); struct mlx4_cqe *cqe; int err; if (unlikely (attr-> comp_mask)) return EINVAL; if … how to memorize marching band music