环形队列的最小可操作单位并不是固定的,可以是一个字节的内存空间,也可以是N个字节,或者是其他数据结构体类型的内存尺寸,这取决于环形队列最小单元的尺寸。比如 char ringbuffer[409600] 的环形队列,可操作的最小单位一般就是一个字节,long long ringbuffer[409600] 的环形队列,很可能就是按照8个字节作为一个最...
pthread_ _mutex_ lock/pthread_ _mutex_ _unlock dIsym的实现 有向图的构建 有向图dfs判断环的存在 三个原语操作 lock before, lock_ after, unlock_ after 死锁检测线程的实现 手写内存泄漏检测组件(项目) 内存泄漏现象 第三方内存泄漏与代码内存泄漏 malloc与free的dIsym实现 内存检测策略 应用场景测试 手把...
三个原语操作 lock before, lock_ after, unlock_ after 死锁检测线程的实现 手写内存泄漏检测组件(项目) 内存泄漏现象 第三方内存泄漏与代码内存泄漏 malloc与free的dIsym实现 内存检测策略 应用场景测试 手把手实现分布式锁(项目) 多线程资源竞争互斥锁
}//to store the received data into the application data buffer at once, lock it_bufferLock.Lock(); __try {//if we are going to overrun on writing the received data into the buffer, set the appropriate flag; the reading thread will handle the overrun_bufferOverrun = (_buffer.GetFreeSiz...
ring_buf->in=0; ring_buf->out=0; ring_buf->f_lock =f_lock;returnring_buf; }//释放缓冲区voidring_buffer_free(structring_buffer *ring_buf) {if(ring_buf) {if(ring_buf->buffer) {free(ring_buf->buffer); ring_buf->buffer =NULL; ...
上篇| 说说无锁(Lock-Free)编程那些事 缓存编程算法node.jsc++ 1. 引言 现代计算机,即使很小的智能机亦或者平板电脑,都是一个多核(多CPU)处理设备,如何充分利用多核CPU资源,以达到单机性能的极大化成为我们码农进行软件开发的痛点和难点。在多核服务器中,采用多进程或多线程来并行处理任务,俨然成为了大家...
3. 源码分析-(RX/TX)RingBuffer 在网卡启动时所做的事情 A:整体看下igb_setup_all_rx_resources 和 igb_setup_all_tx_resources B:igb_ring网络接口卡(NIC)环形缓冲区的数据结构【这是重点struct】 C:igb_setup_all_tx_resources 源码分析 D:igb_setup_all_rx_resources源码分析 E:此处有2点重要总结 F:...
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162 mutex_lock(&ring_info->ring_buffer_mutex); 163 164 if (!ring_info->ring_buffer) { 165 mutex_unlock(&ring_info->ring_buffer_mutex); Drivers: hv: vmbus: Check for ring when getting debug info Dec 17, 2018 166 return -EINVAL; Drivers: hv: vmbus: Fix race condition with ...