synchronization

My following code got an error, when it runs, some of the graph weights are being overwritten, but that should not be happening with the Xa array(which keeps which ones have already been visited) and the __syncthreads() function... May someone help? struct Node { int begin; // begining of the substring int num; // size of the sub-string }; __global__ void BFS (Node *Va, int *Ea, bool *Fa, bool *Xa, int *Ca, bool *parada) { int tid = threadIdx.x; if (Fa[tid] == true && Xa[tid] == false) { Fa[tid] = false; __syncthreads(); // Va begin is where it's edges' subarray begins, Va is it's // number of

Extended PUB/SUB topology I have multiple publishers and multiple subscribers in a use case with 1 intermediary. In the ZeroMQ guide, I learnt about synchronizing 1 publisher and 1 subscriber, using additional REQ/REP sockets. I tried to write a synchronization code for my use case, but it is getting messy if I try to write code according to logic given for 1-1 PUB/SUB . The publisher code when we have only 1 publisher is : //Socket to receive sync request zmq::socket_t syncservice (context, ZMQ_REP); syncservice.bind("tcp://*:5562"); // Get synchronization from subscribers int subscribers = 0

I want my android app's connection to be added in an existing contact. I am sending my all contacts of Phonebook to server(with Name,Phone Number, and Contact ID) to check which contacts are registered for my app. I will send back to client app the contact IDs which are matched. Now I want to add connection to those contacts in my Phonebook based on those returned IDs. How can I add app connection by editing the contact based on one of returned contact ID? Thanks Try with this code, it will give you desired output public static void addContact(Context context, MyContact contact) {

This is actually a design question for firmware in an embedded system I have two ISRs (of same priority) executed independently . These ISRs are triggered when the h/w generates data. I want a mechanism which must be put in place to synchronise between task1 and task2. task 2 must know about the certain values calculated in task1 which must then be taken into account while computing certain values in task2. I don't have OS primitives to use ie the system does not have any Operating system. Task1 is executed within the context of ISR1 and task2 within the context of ISR2. The processor which we

I followed this guide to implementing build numbers in an XCode iPhone project ( guide ). I tried it and I am getting the wrong build number when NSLogging. It's not updating correctly and is always one or two numbers behind the info.plist. I need it to be the same number. Anyone know why this is happening? i.e "[[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBuildNumber"]" is not the same as the plist's CFBuildNumber. The script is set to run first, before copy bundle resources and everything. This is the output and info.plist numbers I get: Application Version: 1.0 Build No: 52

I need to add session synchronization to a Spring MVC application. I'm using Spring 3.1.2. The synchronization is required because I will have multiple AJAX calls updating session data. Rather than synchronize the session data within the web app, the design decision was made to force the incoming calls to be processed synchronously. In my servlet.xml, I have the following: <mvc:annotation-driven /> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="synchronizeOnSession" value="true" /> </bean> Yet if I do two AJAX calls from the same

I have written a C based library and for it to work in multi-thread parallely, I create some global mutexes in the init function. I expect the init function to be called in the main thread before the library APIs are used in multi-thread. But, if the init function itself is called in multi-thread directly, then it is a problem. Is there a way to protect the init function itself from my library? One way I can think of is to ask the application to create a mutex and protect parallel calls to my init function, but can I protect it from my library itself? You probably want to use teh default entry