| sc::ProcFileGrp(3) | MPQC | sc::ProcFileGrp(3) |
sc::ProcFileGrp - The ProcFileGrp concrete class provides an implementation of FileGrp for a single processor.
#include <fileproc.h>
Inherits sc::FileGrp.
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.
The ProcFileGrp concrete class provides an implementation of FileGrp for a single processor.
Clones the given FileGrp. The new FileGrp may need to be initialized additionally.
Implements sc::FileGrp.
This gives read access to the file location. No locking is done.
Implements sc::FileGrp.
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.
This gives write access to the data location. No locking is done.
Implements sc::FileGrp.
This is called when read access is no longer needed.
Implements sc::FileGrp.
This is called when read/write access is no longer needed. The data will be unlocked.
Implements sc::FileGrp.
This is called when write access is no longer needed.
Implements sc::FileGrp.
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.
Synchronizes all the nodes. Consider using this when the way you you access data changes.
Implements sc::FileGrp.
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| Fri Dec 2 2022 | Version 2.3.1 |