/** declare intent to write
@param ofs offset within buf at which we will write
@param len the length at ofs we will write
@return new buffer pointer. this is modified when testIntent is true.
*/
void* DurableImpl::writingAtOffset(void *buf, unsigned ofs, unsigned len) {
char *p = (char *) buf;
if( testIntent )
p = (char *) MongoMMF::switchToPrivateView(buf);
declareWriteIntent(p+ofs, len);
return p;
}
void* DurableImpl::writingPtr(void *x, unsigned len) {
void *p = x;
if( testIntent )
p = MongoMMF::switchToPrivateView(x);
declareWriteIntent(p, len);
return p;
}
void* DurableImpl::writingRangesAtOffsets(void *buf, const vector< pair< long long, unsigned > > &ranges ) {
char *p = (char *) buf;
for( vector< pair< long long, unsigned > >::const_iterator i = ranges.begin();
i != ranges.end(); ++i ) {
declareWriteIntent( p + i->first, i->second );
}
return p;
}
/** declare intent to write
@param ofs offset within buf at which we will write
@param len the length at ofs we will write
@return new buffer pointer.
*/
void* DurableImpl::writingAtOffset(void *buf, unsigned ofs, unsigned len) {
char *p = (char *) buf;
declareWriteIntent(p+ofs, len);
return p;
}
void* DurableImpl::writingPtr(void *x, unsigned len) {
dassert(shutdownRequested.load() == 0);
void *p = x;
declareWriteIntent(p, len);
return p;
}
