c++ - Creating parallel threads using Win 32 API -


here problem: have 2 sparse matrices described vector of triplets. task write multiplication function them using parallel processing win 32 api. need know how i:

1) create thread in win 32 api

2) pass input parameters it

3) return value.

thanks in advance!

edit: "process" changed "thread"

well, answer question createprocess , getexitcodeprocess.

but solution problem isn't process @ all, it's more threads. , openmp more suitable mechanism creating own threads.

if have use win32 api directly threads, process like:

  • build work item descriptor allocating memory, storing pointers real data, indexes thread going work on, etc. use structure keep organized.
  • call createthread , pass address of work item descriptor.
  • in thread procedure, cast pointer structure pointer, access work item descriptor, , process data.
  • in main thread, call waitformultipleobjects join worker threads.

for greater efficiency, can use windows thread pool , call queueuserworkitem. while won't have create threads yourself, you'd need event handles join tasks main thread. it's same amount of code suspect.


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