Why Go's cmd.Process.Kill() Fails to Terminate Child Processes
While using cmd.Process.Kill() may seem like a straightforward approach to kill a child process in Go, it has a significant limitation: it doesn't work on child processes. This has been reported in multiple questions, such as "Process.Kill() on child processes."
Solution
To overcome this issue, a more comprehensive approach is required. A solution suggested by the Go community is to utilize the SysProcAttr.Setpgid attribute and the syscall.Kill() function. This approach involves the following steps:
- Set SysProcAttr.Setpgid to true to create a new process group for the child process.
- Start the child process using cmd.Start().
- Obtain the process group ID (pgid) using syscall.Getpgid().
- Send a SIGTERM signal (signal 15) to the process group using syscall.Kill(-pgid, 15). The negative sign is crucial to target the process group.
- Finally, call cmd.Wait() to wait for the child process to terminate.
Caveat
It's important to note that this approach may not be cross-platform compatible. While it has been tested on macOS Yosemite and Linux systems, its behavior on BSD and Windows may vary.
The above is the detailed content of Why Doesn\'t Go\'s cmd.Process.Kill() Work on Child Processes?. For more information, please follow other related articles on the PHP Chinese website!

Effective Go application error logging requires balancing details and performance. 1) Using standard log packages is simple but lacks context. 2) logrus provides structured logs and custom fields. 3) Zap combines performance and structured logs, but requires more settings. A complete error logging system should include error enrichment, log level, centralized logging, performance considerations, and error handling modes.

EmptyinterfacesinGoareinterfaceswithnomethods,representinganyvalue,andshouldbeusedwhenhandlingunknowndatatypes.1)Theyofferflexibilityforgenericdataprocessing,asseeninthefmtpackage.2)Usethemcautiouslyduetopotentiallossoftypesafetyandperformanceissues,

Go'sconcurrencymodelisuniqueduetoitsuseofgoroutinesandchannels,offeringalightweightandefficientapproachcomparedtothread-basedmodelsinlanguageslikeJava,Python,andRust.1)Go'sgoroutinesaremanagedbytheruntime,allowingthousandstorunconcurrentlywithminimal

Go'sconcurrencymodelusesgoroutinesandchannelstomanageconcurrentprogrammingeffectively.1)Goroutinesarelightweightthreadsthatalloweasyparallelizationoftasks,enhancingperformance.2)Channelsfacilitatesafedataexchangebetweengoroutines,crucialforsynchroniz

InterfacesandpolymorphisminGoenhancecodereusabilityandmaintainability.1)Defineinterfacesattherightabstractionlevel.2)Useinterfacesfordependencyinjection.3)Profilecodetomanageperformanceimpacts.

TheinitfunctioninGorunsautomaticallybeforethemainfunctiontoinitializepackagesandsetuptheenvironment.It'susefulforsettingupglobalvariables,resources,andperformingone-timesetuptasksacrossanypackage.Here'showitworks:1)Itcanbeusedinanypackage,notjusttheo

Interface combinations build complex abstractions in Go programming by breaking down functions into small, focused interfaces. 1) Define Reader, Writer and Closer interfaces. 2) Create complex types such as File and NetworkStream by combining these interfaces. 3) Use ProcessData function to show how to handle these combined interfaces. This approach enhances code flexibility, testability, and reusability, but care should be taken to avoid excessive fragmentation and combinatorial complexity.

InitfunctionsinGoareautomaticallycalledbeforethemainfunctionandareusefulforsetupbutcomewithchallenges.1)Executionorder:Multipleinitfunctionsrunindefinitionorder,whichcancauseissuesiftheydependoneachother.2)Testing:Initfunctionsmayinterferewithtests,b


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Atom editor mac version download
The most popular open source editor

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

Zend Studio 13.0.1
Powerful PHP integrated development environment

SublimeText3 English version
Recommended: Win version, supports code prompts!

Notepad++7.3.1
Easy-to-use and free code editor
