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alsa声卡分析alsa-utils调用过程(二)-tinymixer

继上一篇文章:http://www.cnblogs.com/linhaostudy/p/8515277.html三、tinymixer调用分析:(tinymixer.log搜索节点:/dev/snd/controlCx)还是一样,系统调用从应用层到kernel层,都要通过VFS来到file_operations;......

2018-03-29
1

就这样把根目录删了!!!

可能每个人都无意删除过根目录,我的case是这样的,执行了一个清理日志的脚本,大致的逻辑是:...cd ${log_path}rm -rf *...看上去没有任何问题,进入到日志目录,然后把日志都删除。但是,当目录不存在时,悲剧就发生了。程序员总是...

2018-03-01
0

伪路径

1.什么是伪路径?存在于设计之中,之所以叫伪路径,是因为这样的路径并未发挥真正的功能,在时序分析时不需要我们去分析。2.为什么设置伪路径?去除无效的时序路径节约编译时间和资源——可以去除伪路...

2018-02-24
0

多周期路径的约束

放松时序要求应用1:clk1和clk2是同频但不同相,其中clk2相对于clk1有正向的相位偏移set_multicycle_path -from [get_clocks clk1] -to [

2018-02-24
0

Leetcode 64 Minimum Path Sum

Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path. Note: Yo...

2018-01-12
1

Leetcode 71 Simplify Path

Given an absolute path for a file (Unix-style), simplify it. For example, path = "/home/", => "/ho

2018-01-12
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Leetcode 120 Triangle

Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below. For example, given the following ...

2018-01-12
1

Leetcode 113 Path Sum II

Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.For example:Given the below binary tree and sum = 22,...

2018-01-12
1

Leetcode 112 Path Sum

Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.For exampl...

2018-01-12
1

Leetcode 129 Sum Root to Leaf Numbers

Given a binary tree containing digits from 0-9 only, each root-to-leaf path could represent a number. An example is the root-to-leaf path 1->2->3 which repre...

2018-01-12
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