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/*
* DEBUG: section 20 Storage Manager Swapin Functions
* AUTHOR: Duane Wessels
*
* SQUID Web Proxy Cache http://www.squid-cache.org/
* ----------------------------------------------------------
*
* Squid is the result of efforts by numerous individuals from
* the Internet community; see the CONTRIBUTORS file for full
* details. Many organizations have provided support for Squid's
* development; see the SPONSORS file for full details. Squid is
* Copyrighted (C) 2001 by the Regents of the University of
* California; see the COPYRIGHT file for full details. Squid
* incorporates software developed and/or copyrighted by other
* sources; see the CREDITS file for full details.
*
* 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 2 of the License, 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, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*
*/
#include "squid.h"
#include "globals.h"
#include "StatCounters.h"
#include "StoreClient.h"
#include "Store.h"
#include "store_swapin.h"
static StoreIOState::STIOCB storeSwapInFileClosed;
static StoreIOState::STFNCB storeSwapInFileNotify;
void
storeSwapInStart(store_client * sc)
{
StoreEntry *e = sc->entry;
if (!EBIT_TEST(e->flags, ENTRY_VALIDATED)) {
/* We're still reloading and haven't validated this entry yet */
return;
}
if (e->mem_status != NOT_IN_MEMORY)
debugs(20, 3, HERE << "already IN_MEMORY");
debugs(20, 3, "storeSwapInStart: called for : " << e->swap_dirn << " " <<
std::hex << std::setw(8) << std::setfill('0') << std::uppercase <<
e->swap_filen << " " << e->getMD5Text());
if (e->swap_status != SWAPOUT_WRITING && e->swap_status != SWAPOUT_DONE) {
debugs(20, DBG_IMPORTANT, "storeSwapInStart: bad swap_status (" << swapStatusStr[e->swap_status] << ")");
return;
}
if (e->swap_filen < 0) {
debugs(20, DBG_IMPORTANT, "storeSwapInStart: swap_filen < 0");
return;
}
assert(e->mem_obj != NULL);
debugs(20, 3, "storeSwapInStart: Opening fileno " << std::hex << std::setw(8) << std::setfill('0') << std::uppercase << e->swap_filen);
sc->swapin_sio = storeOpen(e, storeSwapInFileNotify, storeSwapInFileClosed, sc);
}
static void
storeSwapInFileClosed(void *data, int errflag, StoreIOState::Pointer self)
{
store_client *sc = (store_client *)data;
debugs(20, 3, "storeSwapInFileClosed: sio=" << sc->swapin_sio.getRaw() << ", errflag=" << errflag);
sc->swapin_sio = NULL;
if (sc->_callback.pending()) {
assert (errflag <= 0);
sc->callback(0, errflag ? true : false);
}
++statCounter.swap.ins;
}
static void
storeSwapInFileNotify(void *data, int errflag, StoreIOState::Pointer self)
{
store_client *sc = (store_client *)data;
StoreEntry *e = sc->entry;
debugs(1, 3, "storeSwapInFileNotify: changing " << e->swap_filen << "/" <<
e->swap_dirn << " to " << sc->swapin_sio->swap_filen << "/" <<
sc->swapin_sio->swap_dirn);
assert(e->swap_filen < 0); // if this fails, call SwapDir::disconnect(e)
e->swap_filen = sc->swapin_sio->swap_filen;
e->swap_dirn = sc->swapin_sio->swap_dirn;
}
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