The BSPWork class provides several methods which subclasses inherit and can call within bsp_run() in the same way one would call library functions in C. These are based on BSPLib [5],
a programming library for C and Fortran currently being used in most BSP applications, but have been modified to account for language and style differences between Java and C.
These methods are shown in Table 1, subdivided by function into the following categories (in order): inquiry, message passing, direct remote memory access, and synchronization.
| method | meaning | ||
| int bsp_pid() | my BSP process identifier | ||
| int bsp_nprocs() | number of virtual processes | ||
| double bsp_time() | local time in seconds | ||
| void bsp_send(BSPMessage msg) | send prepared message | ||
| void bsp_send(int dest,int tag, | create tagged message, | ||
| Object data) | and send to dest | ||
| BSPMessage bsp_recv() | receive message | ||
| int bsp_qsize() | number of incoming messages | ||
| BSPMessage bsp_peek() | preview next message | ||
| int bsp_peekTag() | preview next message tag | ||
| void bsp_save(String name,Object data) | save data under name | ||
| Object bsp_restore(String name) | restore data under name | ||
| Object bsp_unregister(String name) | remove data under name | ||
| void bsp_put(int dest,String destName, | write data to destName | ||
| Object data) | variable of dest | ||
| Object bsp_get(int src,String srcName, | read srcName variable | ||
| String destName ) | of src to local destName | ||
| boolean bsp_sync() | sync; possibly checkpoint and migrate | ||
| boolean bsp_step() | mark beginning of superstep | ||
| boolean bsp_cont() | mark continuation of superstep |