usermode/library/mtm/src/mode/pwb-common/pwb.c

/*
    Copyright (C) 2011 Computer Sciences Department, 
    University of Wisconsin -- Madison

    ----------------------------------------------------------------------

    This file is part of Mnemosyne: Lightweight Persistent Memory, 
    originally developed at the University of Wisconsin -- Madison.

    Mnemosyne was originally developed primarily by Haris Volos
    with contributions from Andres Jaan Tack.

    ----------------------------------------------------------------------

    Mnemosyne 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, version 2
    of the License.
 
    Mnemosyne 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., 51 Franklin Street, Fifth Floor, 
    Boston, MA  02110-1301, USA.

### END HEADER ###
*/

#include "mtm_i.h"
#include "beginend-bits.h"

void ITM_NORETURN
mtm_pwb_restart_transaction (mtm_tx_t *tx, mtm_restart_reason r)
{
        uint32_t actions;

#if (!defined(ALLOW_ABORTS))
        if (tx->mode == MTM_MODE_pwbnl) {
                assert(0 && "Aborts disabled for current mode pwbnl but want to abort.\n");
        }       
#endif

        if (r == RESTART_REALLOCATE) {
                assert(0 && "Currently we don't support extending the read/write set size");
        }

        rollback_transaction(tx);
        cm_delay(tx);
        /* TODO: decide whether to transition to a different execution mode 
         * after a restart. For example, transition to serial mode
         */

        /* Reset field to restart transaction */
        pwb_prepare_transaction(tx);

        actions = a_runInstrumentedCode | a_restoreLiveVariables;
        //if ((tx->prop & pr_uninstrumentedCode) && (tx->status & TX_IRREVOCABLE)) {
        //      actions = a_runUninstrumentedCode | a_restoreLiveVariables;
        //}     
        
        mtm_longjmp (&tx->jb, actions);
}

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