If ' upc_global_exit()' had been called-i.e., program termination will Performed from non-UPC code, instead of ' bupc_exit()', the result is as If regular ' exit()' (or a return from main) is
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BERKELEY UPC CODE
Similarly, no code should followĪ call to ' bupc_exit()': it is not defined if such code will even be Many threads of control will run that code, or whether The semantics of any codeĪppearing before it is implementation-defined (for example, it is undefined how Should be the first statement in ' main()'. The call to ' bupc_init()' (or ' bupc_init_reentrant()') It also supports non-pthreaded applications, and The ' bupc_init_reentrant()' function must be used when These functions are available by #including : The Berkeley UPC runtime, and ' bupc_exit()' should be used at programĮxit. ' bupc_init_reentrant()' must be called at startup to bootstrap If ' main()' does not live in UPC code, ' bupc_init()' or Runtime is bootstrapped normally, and no special logic is needed at program The ' main()' function can live either in UPC code, or in an object Programming hybrid applications with -pthreadsīootstrapping the UPC Runtime from an external language.Passing pointers-to-shared between non-UPC and UPC code.Bootstrapping the UPC Runtime from an external language.Programming Hybrid Applications with Pthreads NOTE: if -pthreads is used to generate UPC executables,ĭifferences emerge between C and UPC global variables, and function callsīecome the only interface from other languages into UPC. Keywords (no ' shared', etc., in declarations). Treated as C by other languages, so long as they do NOT contain any UPC-specific In the other direction, UPC functions and variables can be Thus, UPC code can refer to anyįunctions/variables in C/C++/FORTRAN code, provided that they "look like C" to Language interoperability issues, and so the interfaces described here should be It also lets you link a UPC application toĮxisting MPI and/or C++/C/FORTRAN libraries. Performance-critical sections of an existing application in UPC, without needing
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We also support applications whichĬontain MPI (Message Passage Interface) calls. Hybrid of UPC and C, C++, and/or FORTRAN. As of release 2.0, Berkeley UPC supports creating applications which are a