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#define XERR "memoryaccess"
#include "memoryaccess.ih"
// create() constructs a new MemoryAccess object. It's called by the
// MemoryBridge constructor receiving a memory size (like 2MB). The
// MemoryBridge constructor receiving an ID doesn't allocate, but directly
// loads it, using the loadID member, sharing the already allocated
// MemoryAccess object.
// by memorybridge3.cc
// static
MemoryAccess *MemoryAccess::create(string const &bufSize, size_t access)
{
size_t nBlocks;
size_t blockSize;
cptSizes(&nBlocks, &blockSize, bufSize); // determine #blocks(size)
// define s_pageSize and
// get the Access's ID
int id = getID(memoryAccessSize(nBlocks), access);
// get its location
MemoryAccess *ptr = static_cast<MemoryAccess *>(connect(id));
if (ptr == 0)
throw Exception{} << XERR ": can't connect memory for a "
"MemoryAccess object (id = " << id << ')';
// placement new installation
// of a MemoryAccess object
new (ptr) MemoryAccess(id, access, nBlocks, blockSize);
ptr->d_blockStep = nBlocks;
return ptr;
}
//xerr("nBlocks: " << nBlocks << ", blockSize: " << blockSize);
//MemoryAccess *MemoryAccess::create(int *id, string const &bufSize,
// return allocate(id, nBlocks, blockSize, access);
//xerr(" size(MemoryAccess): " << sizeof(MemoryAccess) <<
// ", sizeof MemoryID: " << sizeof(MemoryID) << '\n' <<
// " required total MemoryAccess size: " <<
// (sizeof(MemoryAccess) + (nBlocks - 1) * sizeof(MemoryID)));
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