Public Member Functions

ProcFileGrp (const Ref< KeyVal > &)
ProcFileGrp * clone ()
Clones the given FileGrp. The new FileGrp may need to be initialized additionally. void set_localsize (size_t)
Set the size of locally held data. void * localdata ()
void * obtain_readwrite (distsize_t offset, int size)
Only one thread can have an unreleased obtain_readwrite at a time. void * obtain_readonly (distsize_t offset, int size)
This gives read access to the file location. No locking is done. void * obtain_writeonly (distsize_t offset, int size)
This gives write access to the data location. No locking is done. void release_readonly (void *data, distsize_t offset, int size)
This is called when read access is no longer needed. void release_writeonly (void *data, distsize_t offset, int size)
This is called when write access is no longer needed. void release_readwrite (void *data, distsize_t offset, int size)
This is called when read/write access is no longer needed. void sync ()
Synchronizes all the nodes.

Additional Inherited Members

void* sc::ProcFileGrp::obtain_readwrite (distsize_t offset, int size) [virtual]

Only one thread can have an unreleased obtain_readwrite at a time. The actual file region locked can be larger than that requested. If the file region is already locked this will block. For this reason, data should be held as read/write for as short a time as possible.

Implements sc::FileGrp.

void sc::ProcFileGrp::release_readwrite (void * data, distsize_t offset, int size) [virtual]

This is called when read/write access is no longer needed. The data will be unlocked.

Implements sc::FileGrp.

void sc::ProcFileGrp::set_localsize (size_t) [virtual]

Set the size of locally held data. When data is accessed using a global offset counting starts at node 0 and proceeds up to node n() - 1.

Implements sc::FileGrp.

void sc::ProcFileGrp::sync () [virtual]

Synchronizes all the nodes. Consider using this when the way you you access data changes.

Implements sc::FileGrp.