![]() The pthreads standard explicitly says you may not manipulate a thread ID in this way. The actual bytes of memory may contain extraneous bytes, indirect references, or anything else. A thread ID is just an opaque reference to a thread while that thread has not been joined or terminated and detached. It is literally impossible for a thread ID to be duplicated because the two thread IDs do not have any overlap in their lifetime and there is no meaningful value to the thread ID that persists beyond its lifetime. The only permitted way to compare pthread_ts for equality is with pthread_equal but the documentation says, " If either t1 or t2 are not valid thread IDs, the behavior is undefined." and since the thread has terminated and been joined, it's ID is no longer valid. You might think that you can do it by comparing the pthread_ts for equality rather than printing them. It is unreasonable to expect a meaningful value. So the standard doesn't even require this code to compile. The standard explicitly permits a pthread_t to be a struct. Who knows? The standard makes pthread_t an entirely opaque type with only a very limited set of defined operations. On your platform, pthread_t might behave like char * and this code might attempt to dereference it, but it may not point to any valid object. The behavior of this code is entirely undefined. The output routine could try to access bytes in the pthread_t that are not mapped into memory. You cannot assume it means anything at all. It may or may not include the entire value of the pthread_t. Nothing specifies what the printed value of a pthread_t should be. Your code has a bug: cout<<"threadcnt="<<i<<" "<<"thread_id=" << thread_id << endl There is no way bug free code could ever tell if a pthread_t is reused. Pthread_create( &thread_id, NULL, thread_function, NULL ) Ĭout<<"threadcnt="<<i<<" "<<"thread_id=" << thread_id << endl Īnd here is output trace and as you can see, there are duplicate thread IDs between loop 1 and loop 2 //Loop 1 Is this correct as i'm expecting all the thread IDs should be unique? I noticed there are duplicates of thread IDs not within the same loop, but between loops. Make it easy to sync your design files with your linked libraries and design systems.Īnd btw, just got a cool UI update.I have a loop and each iteration of the loop will create 5 threads with pthread_create.Keep your design files clean and get rid of all duplicate, inconsistent and unnecessary symbols and styles.Merge Duplicates is a Sketch plugin to help cleaning design files and libraries and achieve cleanness and consistency, and do it in a breeze: ![]() We all know we should address it but (excuse coming) → fixing it takes a huge amount of time and lots and lots of boring and stupid work, so we keep postponing and postponing it forever…Īnd this is why we built Merge Duplicates :) Merge Duplicates Hard to use and evangelize the design system across the company. Hard to prevent collaborators (or even yourself) for creating new redundant stuff. “Inconsistency” is a polite way to call it. Having duplicate, similar, or inconsistent symbols or styles in your design files is considered design debt. So similar that you couldn’t tell the difference. You can have similar symbols, patterns, and styles locally and in linked libraries. When several designers collaborate in a design (or a library), you have a high risk of creating redundant stuff (just because it’s hard that all designers are aware of everything that exists already in the system).You may have the same (or similar) symbols and styles defined in your design system library and in your local files.It’s quite easy to get duplicate symbols and styles when using stuff from other design files or when doing certain actions (usually involving copy&paste or duplicate) in Sketch.It is extremely easy to mess things up in a design file □: To make our designs and systems work.īut let’s face it. Keeping our files clean is not a “good practice” anymore. Every extra symbol, every extra style, every extra pattern you have in your system is a point that introduces doubt down the chain, and may lead to different decisions, breaking consistency and making your system fail. For design system users, knowing what to apply under what circumstances is crucial, and should be straightforward. It makes maintaining and growing those design files more and more complicated and takes more time.įor design system and library managers keeping design files clean is mission critical. Having more symbols and styles than strictly needed not only makes it way harder to find and use the right ones and keep consistency in our designs. For the sake of consistency, primarily, but also because it saves us enormous amounts of time. We all try to keep our design files consistent and clean. As you’re reading this, you have duplicated, inconsistent, and unnecessary symbols and styles in your design files, and you know it □.
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