| sc::ActiveMsgMemoryGrp(3) | MPQC | sc::ActiveMsgMemoryGrp(3) |
sc::ActiveMsgMemoryGrp - The ActiveMsgMemoryGrp abstract class specializes the MsgMemoryGrp class.
#include <memamsg.h>
Inherits sc::MsgMemoryGrp.
Inherited by sc::MTMPIMemoryGrp.
ActiveMsgMemoryGrp (const Ref< MessageGrp
> &msg)
ActiveMsgMemoryGrp (const Ref< KeyVal > &)
void set_localsize (size_t)
Set the size of locally held memory. void * localdata ()
Returns a pointer to the local data. void * obtain_writeonly
(distsize_t offset, int size)
This gives write access to the memory location. No locking is done. 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 memory 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
sum_reduction (double *data, distsize_t doffset, int dsize)
void sum_reduction_on_node (double *data, size_t doffset, int dsize,
int node=-1)
void print (std::ostream &o=ExEnv::out0()) const
Prints out information about the object.
virtual void retrieve_data (void *, int node, int
offset, int size, int lock)=0
virtual void replace_data (void *, int node, int offset, int
size, int unlock)=0
virtual void sum_data (double *data, int node, int doffset, int
dsize)=0
char * data_
The ActiveMsgMemoryGrp abstract class specializes the MsgMemoryGrp class.
It uses active messages to implement global shared memory.
Returns a pointer to the local data.
Implements sc::MemoryGrp.
This gives read access to the memory location. No locking is done.
Implements sc::MemoryGrp.
Only one thread can have an unreleased obtain_readwrite at a time. The actual memory region locked can be larger than that requested. If the memory 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::MemoryGrp.
This gives write access to the memory location. No locking is done.
Implements sc::MemoryGrp.
Prints out information about the object.
Reimplemented from sc::MemoryGrp.
This is called when read access is no longer needed.
Implements sc::MemoryGrp.
This is called when read/write access is no longer needed. The memory will be unlocked.
Implements sc::MemoryGrp.
This is called when write access is no longer needed.
Implements sc::MemoryGrp.
Set the size of locally held memory. When memory is accessed using a global offset counting starts at node 0 and proceeds up to node n() - 1.
Implements sc::MemoryGrp.
Reimplemented from sc::MemoryGrp.
Reimplemented from sc::MemoryGrp.
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| Fri Dec 2 2022 | Version 2.3.1 |