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Concurrent programming Multi-Process 3 (producer and consumer model) callback function

produced %s'%(Os.getpid (), res))defConsumer (q): whileTrue:res=Q.get ()ifRes isNone: Break Print('%s Eat%s'%( os.getpid (), res)) Time.sleep (Random.randint (2,3))if __name__=='__main__': Q=Queue () p=process (target=procducer,args=(q,)) C=process (target=consumer,args=(q,)) P.start () C.start () P.join () q.put (None)Print('Master') fromMultiprocessingImportProcess,queueImport TimeImportRandomImportOSdefproducer (name,q): forIinchRange (10): Res='%s%s'%(name,i) time.sleep (Random.randi

Linux Primary knowledge

relationship Oh!) )In addition, the developers of the Minux operating system only have Tan Ningbong professor, because the scholar is very busy Ah! Plus Tan Ningbong always think Minix is mainly used for educational purposes above, so for Minix is donuts! Yes, Minix is very popular, however, the voice of the user's requirements/needs may not be able to rise to a higher place! You know that, don't you? ^_^.* 1984 Year Two: the GNU Project and the FSF

Linux Driver Platform

is the same.The definition of Platform_device is usually implemented in the BSP Board file, in the board file, the Platform_device is summed up as an array, which is eventually registered through the Platform_add_devices () function. The Platform_add_devices () function can add a platform device to the system, and the prototype of the function is:int platform_add_devices (struct platform_device **devs, int num);The first parameter of the function is

PCI Driver Analysis for Linux

) { struct DEMO_ Card *card; if (Pci_enable_device (Pci_dev)) return-eio; nbsp ; if (Pci_set_dma_mask (Pci_dev, Demo_dma_mask)) { return-enodev; }N Bsp if (card = kmalloc (sizeof (struct demo_card), gfp_kernel) = = NULL) { Print K (kern_err "Pci_demo:out of Memory\n "); return-enomem; } memset (card, 0, sizeof (*card)); nbs p; card->iobase = Pci_resource_start (Pci_dev, 1); Card->pci_dev = pci_dev; C ard->pci_id = pci_id->device; CARD-GT;IRQ = pci_dev->irq; Card->next =

Drive develops reading notes. 0.04 Linux 2.6 Platform device register platform equipment registration 1/2 Total 2 articles

the setting of Gpio and registered led devices Summary: The first method defines the resource definition platform data setting Platdata (associated with Platform_device) and then uses Platform_add_ The devices function is registered Note that platform_add_devices and platform_device_add differ greatly, platform_add_devices (struct platform_device * * Devs,int num) based on the incoming pointer, calculates the number of Platform_device to register

A bit of experience in PHP session usage summary _php skills

. ------------------------------------------------------------- Just looked for the Firefox cookie session expired information, found as follows This is apparently by design. Check out this Bugzilla bug:https://bugzilla.mozilla.org/show_bug.cgi?id=443354 Firefox has a feature where you close Firefox and it offers to save all your tabs, and then you restore the browser and th OSE tabs come back. That ' s called session restore. What I didn ' t realize is, it ' ll also restore all the sessions c

Registration of Linux:platform Equipment __linux

struct Platform_device Take omap4430 as an example: KERNEL/ARCH/ARM/MACH-OMAP2/BOARD-4430SDP.C static struct Platform_device sdp4430_disp_led = {. Name = "Display_led",. id =-1,. Dev = {. Platform_data = sdp4430_disp_led_data,},}; struct Platform_device nec_infrared_remote = {. Name = "Infrared-gpio",. id =-1,}; Add platform device devices to the system: Platform_add_devices (struct platform_device **devs, int num); two. Platform-driven struct platf

Processing.js Introductory tutorials for JavaScript developers _javascript tips

the web, with design decisions that are conducive to compatibility with processing. It is not designed to be a general-purpose HTML drawing library. As has been said, it can be used as a canvas advanced drawing API.Next we discuss the various processing.js methods used in Web pages. Write Pure processing codeThis notation is the preferred method of using processing.js and has been introduced in processing.js for processing devs Quick Start Guide. sum

Some free UI libraries and component resources in the Android platform

The workspace UI design pattern for this project is very similar to that used by Google Docs. Project website: https://github.com/pakerfeldt/android-viewflow 6. Android-coverflowThis project can be used to complete a cover flow. More information is available in the video of this project website.Project website: http://code.google.com/p/android-coverflow/7. Android-viewbadgerThe project lets devs display badges without modifying the layout file (

Weka_ Cluster Analysis Example Walkthrough

result of clustering.) Multiple experiments to find the value tends to be the smallest value (the larger the instance capacity, the more difficult), that is, the best results of the experiment. (2)The next "Cluster centroids:" Lists the locations of each cluster center.for a numeric attribute, the cluster center is its mean value (Mean)The number of types is its majority (Mode), which means that the attribute is valued as the value of theinstances up to。 For the properties of the numerical type

Resolving problems caused by MySQL reload under Windows

Programs and Remove MySQL.-Delete The Programs file/mysql folder (it gets left behind)-Delete The data file (where ever you stored it) #:/mysql datafiles > It's assuming you has no data to as yet to W Orry about!!!!-Run RegEdit and delete all the MySQL Keys (search and F3) and the half a dozen or so CLSIDs this Coe up with just a sing Le non-defailt key for MySQL. You can leave Adobe/keys this mention it if you have dreamweaver etc. As allways back up registry first before Choppig it!Ok. Now ru

Linux Online scan hot-add SCSI/ISCSI device

--largelun:tell kernel to support LUNs >7even on SCSI2 devs--Sparselun:tell kernel to support sparse LUN numbering--update:same AS-u--resize:same AS-s Host numbers may thus is specified either directly on CMD line (deprecated) or or with the--hosts=LIST parameter (recommended). list:a[-b][,c[-D]] ... is a comma separated list of single values and ranges (No spaces allowed.)This article references the following linksHow does I rescan a HP Smart Array f

Build a Web server (for Win7) with MongoDB & NodeJS in the Docker environment

Participation in the text Textbook Code Textbook Solutions stating: Http://proserge.kh.ua/coding/index.php/post/33/MongoDB+for+NodeJs+devs+week4%3A+Perfomancenode. js + MONGO DB is a tool used to build [Web + database] project, and the above textbook is a simple blog in the environment of Docker. The textbook code part of the open space, mainly for the reader to complete their own, the answer is also web site, for the convenience of display

Build a Web server (for Win7) with MongoDB & NodeJS in the Docker environment

Label:How to use the MongoDB NodeJS with DockerChen Zhao Lin teacher [email protected] https://www.facebook.com/groups/247788228752702/(2015/5/25)https://chenlinslim.wordpress.com/Participation in the text:http://ifdattic.com/how-to-mongodb-nodejs-docker/Https://github.com/pertrai1/365-programming/tree/master/mongo/Week3/homework_3_3_mongoproc_version/hw3-2and3-3 /hw3-2and3-3/blog (Textbook Code)Http://proserge.kh.ua/coding/index.php/post/33/MongoDB+for+NodeJs+

ARCH/ARM/Plat-Samsung/dev-uart.c

/* Linux/ARCH/ARM/Plat-Samsung/dev-uart.c* Originally from arch/ARM/plat-s3c24xx/Devs. c* X* Copyright (c) 2004 simtec Electronics* Ben dooks ** Base s3c24xx platform device Definitions** This program is free software; you can redistribute it and/or modify* It under the terms of the GNU General Public License version 2* Published by the Free Software Foundation.**/ # Include # Include # Include /* UART devices */ Static struct platform_device s3c24x

Transplantation of Linux-3.6.6 Based on S3C2440 -- Application of watchdog timer

In Linux, for the S3C2440 Development Board, the watchdog timer has been configured by default, for example: Devicedrivers ---> [*] Watchdog timer support ---> However, the watchdog timer is not enabled, so we will see the following message when starting the system: S3c2410-wdts3c2410-wdt: watchdoginactive, reset disabled, IRQ disabled The following is a detailed analysis of the watchdog timer. The watchdog timer platform device has been added to the Mach-zhaocj2440.c file: Static struct platf

Analysis of Linux platform driver framework

exampleIf a device occupies two memory areas, two ioresource_mem resources can be defined. Note: Device Name and ID The platform_device.dev.bus_id is the canonical name for the devices. It's built from two components: * Platform_device.name... which is also used to for driver matching. * Platform_device.id... the device instance number, or else "-1" to indicate there's only one. These are concatenated, so name/ID "serial"/0 indicates bus_id"Serial.0", and "serial/3" indicates bu

Xap packaging failed. Exception of Type 'System. outofmemoryexception' was thrown

just upgrade our hardware, right? IMean, with cost of processor cycles and ram falling as fast as gasPrices are rising, why not just spend a few bucks and make sure we'reAll running multi-core boxes with 4 + gigabytes of memory and storageSpace to burn. Well guess what... we are. All of the developersAre Running nice beefy machines with lots of RAM, super-fast processors,And we even have nice 21 "wide screen DVI monitors. So this ain't no hardware problem. Its a software problem. IWill adm

MTK platform LCD driver framework (2)

ptr_err (Info); mutex_lock ( info-> lock); If (! Try_module_get (Info-> fbops-> owner) {res =-enodev; goto out;} file-> private_data = Info; If (Info-> fbops-> fb_open) {res = Info-> fbops-> fb_open (file, info, 1); If (RES) module_put (Info-> fbops-> owner );} # ifdef evaluate (Info-> fbdefio) fb_deferred_io_open (Info, inode, file); # endifout: mutex_unlock ( info-> lock); If (RES) put_fb_info (Info ); return res;} static const struct file_operations fb_fops = {. owner = this_module ,. read =

SQL Unit Testing

the production server and leave it running for one or two days. then, you'll have tests that reflect what users do. in addition, you can configure the Visual Studio test load agent and monitor the performance of your SQL server during the execution of the test, simulating concurrent connections and so on. I know that this tool won't replace the unit tests a developer shocould do on the database solution, and also that there are lots of tools that can achieve similar results, but this applicatio

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