BspLib.hpp File Reference

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Functions
void	bsp_begin (int maxProcs)
int	bsp_pid ()
int	bsp_nprocs ()
void	bsp_sync ()
void	bsp_pushregister (const void *ident, int size)
void	bsp_popregister (const void *ident)
void	bsp_put (int pid, const void *src, void *dst, int offset, int nbytes)
void	bsp_get (int pid, void *src, int offset, void *dst, int nBytes)
void	bsp_push_reg (const void *ident, int size)
void	bsp_pop_reg (const void *ident)

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Function Documentation

void bsp_begin (  int  maxProcs  )

Starts the parallel portion of a BSP program Parameters: maxProcs  - the number of tasks to be spawned. This is currently unused. Instead, use the configuration file to specify the number of tasks.

void bsp_get (  int  pid, void *  src, int  offset, void *  dst, int  nBytes )

Allows the local task to read from memory from a remote process. Parameters: pid  - The BSP process ID from where memory contents will be read src  - Memory address from where data will be copied offset  - Offset that will be added to the source address to determine the starting position from where data will be copied dst  - The destination address to were data will be written nBytes  - Number of bytes to be read

int bsp_nprocs (   )

Returns the number of total tasks of the BSP application.

int bsp_pid (   )

Returns the BSP PID of the current task

void bsp_pop_reg (  const void *  ident  )

Alias to bsp_popregister. Removes the registration that allows a memory area to be remotely accessed. If there are more than one registration of the same address, the last one is removed. Parameters: ident  - the memory address to be deregistered

void bsp_popregister (  const void *  ident  )

Removes the registration that allows a memory area to be remotely accessed. If there are more than one registration of the same address, the last one is removed. Parameters: ident  - the memory address to be deregistered

void bsp_push_reg (  const void *  ident, int  size )

Alias to bsp_pushregister. Register a memory address as accessible for remote writes/reads. Parameters: ident  - pointer to the memory area size  - size (in bytes) if the memory area being registered.

void bsp_pushregister (  const void *  ident, int  size )

Register a memory address as accessible for remote writes/reads. Parameters: ident  - pointer to the memory area size  - size (in bytes) if the memory area being registered.

void bsp_put (  int  pid, const void *  src, void *  dst, int  offset, int  nbytes )

Performs a write at a remote memory address. Parameters: pid  - the BSP PID of the remote task on which the write will be performed src  - the memory address from which contents will be copied dst  - the LOCAL destination memory address. Will be mapped to a global memory address. offset  - will start copying from address dst + offset nbytes  - the number of bytes that will be copied

void bsp_sync (   )

Barrier synchronization. Waits until all other tasks reach the barrier.

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