fifo jobs

I want to use two PHP processes. A write FIFO file, a read FIFO file, and then read through the content of the shell, PHP to execute the shell. Does everyone think it's possible? Is it advisable? When the load is high? Reply content: I want to use two PHP processes. A write FIFO file, a read FIFO file, and then r

Copy codeThe Code is as follows: --- a problem frequently encountered in Warehouse Management 1. Brief description of LIFO and FIFO--- FIFO: First in, First out. First in, First out.--- LIFO: Last in, First out. Then, First out. -- For example, goods A: 10 items purchased on December 1, 1st day of this month, with A unit price of 10 yuan/piece, 20 items purchased on the third day, 15 yuan/piece, 10 items p

In the work used to also more, in the load data large file, if the file too assembly lead to the problem of master-slave delay, it must be split into many small files, the use of this tool does not require manual cutting files. This tool works only on Unix-like operating systems. Specific can be viewed: http://www.mysqlperformanceblog.com/2008/07/03/how-to-load-large-files-safely-into-innodb-with-load-data-infile/ Execute the following command in a session: Perl pt-

MPs queue Provides a single (one-way) data stream, which can provide communication means between two different processes. #include Returns two file descriptors, fd [0] () and fd [1] (). Communication between pipelines is usually completed using the read and write Functions. Typical pipeline usage: First, the parent process creates an pipeline and then calls fork to derive a copy of itself. Next, the parent process closes the read end of the pipeline, and the child process closes the write segm

Design Concept of FPGA Asynchronous FIFO (2) First, we will discuss the Gray code encoding method: Let's first look at the 4-bit gray code. When MSB is 0, the positive count is displayed. When MSB is 1, that is, the pointer has already passed through, and the highest digit is flipped. At this time, the gray code is counted in reverse order, the entire set of data is symmetric centered on the maximum value (depth), and each number meets the Gray code

#include#include#include#include#define max 100class fifo{private:int frame[10], mrstr[max];int f,r,tot,nof,fault;public: fifo() { f=r=-1; fault=0; }void getdata();void push();void pop();void dis();};void fifo::getdata(){int pno,i=0; cout cout cin>>nof; coutdo { cin>>pno; mrstr[i++]=pno; }while(pno!=-1); t

Blow your cool and bask in the sun. Better to write something, ha ha ha haha .... Today, how to use Java to implement the cache, this topic a lot of interviews will be asked. Say it today.1. Why is Java implementation cached?As the amount of concurrent software or Web page increase is very large, a large number of requests direct operation of the database, the data will cause great pressure. Processing a large number of requests and connections can take a long time. And we know that 70% of the d

The previous blog has introduced a way of inter-process communication, but it is only the needle for the process of blood relationship , that is, the communication between the father and son process, that for no blood relationship process, how to communicate it?This will create a well-known pipeline to resolve the unrelated process communication, FIFO:[Email protected]:~$ mkfifo xwp[email protected]:~$ ls-l myfifo prw10 Feb 6 MyfifoMkfifo has both

Copy Code code as follows: ---a problem that is often encountered in warehouse management First, on the LIFO and FIFO simple explanation ---fifo:first in, first out. ---lifo:last in, first out, LIFO. -such as goods A: 1st this month to buy 10 pieces, Unit price 10 yuan/piece, 3rd to buy 20, Unit price 15 yuan/piece; 10th to buy 10, Unit price 8 yuan/piece. --35 shipments shipped this month 15th. --

FIFO is typically used for data transmission over two different clock domains. A pool has two channels in and out, and it needs to be cushioned because of inconsistent inlet and outlet flow. The stack is also the equivalent of a pool. If the input is not a continuous stream of data, the stack can be used to adjust the output of the data to a stable state. If the input clock of the data is greater than the output, then there is always a time when the s

JS Priority queue ordering. When you are out of the team, first identify the highest priority elements, and then follow the FIFO first-out team./** Priority Queue * When out of the team, first identify the highest priority elements, and then follow the FIFO first-out team. * */functionQueue () { This. DataStore = [];//an array of storage queues, initialized to null This. enqueue = Enqueue;//add an eleme