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/* Copyright (C) 2021 Free Software Foundation, Inc.
Contributed by Oracle.
This file is part of GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#ifndef _DbeSyncMap_h
#define _DbeSyncMap_h
#include "DbeLock.h"
#include "DbeLinkList.h"
#include "vec.h"
typedef unsigned long hash_ty;
template <class ITEM> class DbeSyncMap : public DbeLock
{
public:
DbeSyncMap (int _chunkSize = DefaultChunkSize);
virtual ~DbeSyncMap ();
void reset ();
ITEM *get (const char *nm, int64_t chksum);
ITEM *sync_create_item (const char *nm, int64_t chksum);
ITEM *get (const char *nm, const char *path, DbeFile *df);
ITEM *sync_create_item (const char *nm, const char *path, DbeFile *df);
virtual void dump ();
Vector<ITEM *> *
values ()
{
return items;
};
private:
hash_ty hash (const char *key);
DbeLinkList<ITEM *> **chunk;
Vector<ITEM *> *items;
long chunkSize;
enum
{
DefaultChunkSize = 1024
};
};
template <class ITEM>
DbeSyncMap<ITEM>::DbeSyncMap (int _chunkSize)
{
chunkSize = _chunkSize;
chunk = new DbeLinkList<ITEM *> * [chunkSize];
for (long i = 0; i < chunkSize; i++)
chunk[i] = NULL;
items = new Vector<ITEM *>(512);
}
template <class ITEM>
DbeSyncMap<ITEM>::~DbeSyncMap ()
{
for (long i = 0; i < chunkSize; i++)
Destroy (chunk[i]);
delete[] chunk;
delete items;
}
template <class ITEM>
void
DbeSyncMap<ITEM>::reset ()
{
for (long i = 0; i < chunkSize; i++)
{
Destroy (chunk[i]);
chunk[i] = NULL;
}
items->reset ();
}
template <class ITEM>
ITEM *
DbeSyncMap<ITEM>::get (const char *nm, int64_t chksum)
{
hash_ty h = hash (nm);
for (DbeLinkList<ITEM *> *dl = chunk[h]; dl; dl = dl->get_next ())
{
ITEM *item = dl->get_item ();
if (item->compare (nm, chksum))
return item;
}
return NULL;
}
template <class ITEM>
hash_ty
DbeSyncMap<ITEM>::hash (const char *key)
{
return (hash_ty) (crc64 (key, strlen (key)) % chunkSize);
}
template <class ITEM>
ITEM *
DbeSyncMap<ITEM>::sync_create_item (const char *nm, int64_t chksum)
{
hash_ty h = hash (nm);
for (DbeLinkList<ITEM *> *dl = chunk[h]; dl; dl = dl->get_next ())
{
ITEM *item = dl->get_item ();
if (item->compare (nm, chksum))
return item;
}
aquireLock ();
for (DbeLinkList<ITEM *> *dl = chunk[h]; dl; dl = dl->get_next ())
{
ITEM *item = dl->get_item ();
if (item->compare (nm, chksum))
{
releaseLock ();
return item;
}
}
ITEM *item = ITEM::create_item (nm, chksum);
DbeLinkList<ITEM *> *dl = new DbeLinkList<ITEM *>(item);
dl->set_next (chunk[h]);
chunk[h] = dl;
items->append (item);
releaseLock ();
return item;
}
template <class ITEM>
ITEM *
DbeSyncMap<ITEM>::get (const char *nm, const char *path, DbeFile *df)
{
int mask = 1 + (path != NULL ? 2 : 0) + (df != NULL ? 4 : 0);
hash_ty h = hash (nm);
for (DbeLinkList<ITEM *> *dl = chunk[h]; dl; dl = dl->get_next ())
{
ITEM *item = dl->get_item ();
if (mask == item->compare (nm, path, df))
return item;
}
return NULL;
}
template <class ITEM>
ITEM *
DbeSyncMap<ITEM>::sync_create_item (const char *nm, const char *path, DbeFile *df)
{
int mask = CMP_PATH;
if (path != NULL)
mask += CMP_RUNTIMEPATH;
if (df != NULL)
mask += CMP_CHKSUM;
hash_ty h = hash (nm);
for (DbeLinkList<ITEM *> *dl = chunk[h]; dl; dl = dl->get_next ())
{
ITEM *item = dl->get_item ();
if (mask == item->compare (nm, path, df))
return item;
}
aquireLock ();
for (DbeLinkList<ITEM *> *dl = chunk[h]; dl; dl = dl->get_next ())
{
ITEM *item = dl->get_item ();
if (mask == item->compare (nm, path, df))
{
releaseLock ();
return item;
}
}
ITEM *item = ITEM::create_item (nm, path, df);
DbeLinkList<ITEM *> *dl = new DbeLinkList<ITEM *>(item);
dl->set_next (chunk[h]);
chunk[h] = dl;
items->append (item);
releaseLock ();
return item;
}
template <class ITEM>
void
DbeSyncMap<ITEM>::dump ()
{
Dprintf (1, NTXT ("\nDbeSyncMap::dump: vals=%ld\n"), (long) VecSize (items));
int tot = 0;
int max_cnt = 0;
for (long i = 0; i < chunkSize; i++)
{
DbeLinkList<ITEM *> *lp = chunk[i];
if (lp)
{
int cnt = 0;
for (DbeLinkList<ITEM *> *lp1 = lp; lp1; lp1 = lp1->get_next ())
cnt++;
tot += cnt;
if (max_cnt < cnt)
max_cnt = cnt;
cnt = 1;
for (DbeLinkList<ITEM *> *lp1 = lp; lp1; lp1 = lp1->get_next ())
{
ITEM *p = lp1->get_item ();
Dprintf (1, NTXT (" %2d %s\n"), cnt, p->get_name ());
cnt++;
}
}
}
Dprintf (1, NTXT ("\nDbeSyncMap::dump: vals=%ld max_cnt=%d tot=%d\n"),
(long) VecSize (items), max_cnt, tot);
}
#endif /* _DbeSyncMap_h */
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