- #Blackberry app wrapper unsigned how to
- #Blackberry app wrapper unsigned code
- #Blackberry app wrapper unsigned windows
This will put quite some burden on the garbage collector if many calculations are done this way. Several wrapper objects must be created, multiplyBy and add will generate some more. This would be translated into: UInteger m = new UInteger(5) The first four points are demonstrated by a small C example: unsigned int x=42, y, m=5, t=18 There are some reasons why nobody created these wrappers in the way you want. And maybe someone has already done that, so that's why I ask. I want the notion of an 8-bit, 16-bit, 32-bit, 64-bit number preserved, for best interaction with databases, for instance.īefore you answer! Consider that I know all the workarounds, but I'd really really like to have exactly those 4 types with exactly the above properties. Also, I don't want to just use the next higher type (e.g.
#Blackberry app wrapper unsigned how to
how to bitwise shift, how to multiply, etc), so I don't want to do it myself. But is there any library actually going all the way and implementing suitable wrappers for UByte, UShort, UInteger, ULong? Preferably, those wrappers would extend and provide an arithmetic API similar to that of .Īs can be seen in this document, there's a lot to think of, and a lot that can go wrong (e.g. For example:Īll of them superficially describe how it could be done. There are a lot of questions dealing with how to simulate unsigned numbers. However, when working with databases, such as MySQL, they may come in handy every now and then. Will come in and make changes while we’re reading the flag.Obviously, Java doesn't support unsigned number types natively, and that's not going to change soon (comments starting in 2002). The lock should alreadyīe locked before unlock is called so we can assume nothing else We do anything with the lock and this is okay. In pthread_rwlock_unlock we check the exclusive flag before Readers from getting the lock so we only have to track if we’re in a write lock. Hold the lock at the same time but only 1 writer can. Lock if there are no read locks being held. This is solely to know whichĮxclusive is a flag and not a count because we can only be in a write Only used by the write lock functions so we know if Typedef CRITICAL_SECTION pthread_mutex_t typedef void pthread_mutexattr_t typedef void pthread_condattr_t typedef void pthread_rwlockattr_t typedef HANDLE pthread_t typedef CONDITION_VARIABLE pthread_cond_t typedef struct įor the most part we’re using the SRWLock within the
#Blackberry app wrapper unsigned windows
Pthread API wrapper around native Windows threads. This makes things much easier on us because we can make a thin Now that we’re in a modern era, Windows now supports both conditionals and read
#Blackberry app wrapper unsigned code
I’d rather not rewrite my code to use a different threading library if I want to Useful if you’ve already written your app using that library. Other thread libraries provide their own API but that’s only I do like winpthreads because it brings the pthread API to Windows. Which is a big part of why they’re so heavy. So these (winpthreads) write emulations for this behavior. Back then Windows threads didn’t natively support conditionals Most cross platform thread libraries were written when XP was still supportedĪnd widely used. There is a pthread implementation that works on Locks me out of Windows because Windows doesn’t implement pthread. I develop on macOS so pthreads is my go to but using it effectively To either *nix or Windows because Windows handles threading a bit differently There are many open source applications which use threading and are limited
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