6041f70ae3
* beginend.cc (GTM::gtm_thread::serial_lock): Put on cacheline boundary. (htm_fastpath): Remove. (gtm_thread::begin_transaction): Fix HTM fastpath. (_ITM_commitTransaction): Adapt. (_ITM_commitTransactionEH): Adapt. * libitm/config/linux/rwlock.h (gtm_rwlock): Add htm_fastpath member and accessors. * libitm/config/posix/rwlock.h (gtm_rwlock): Likewise. * libitm/config/posix/rwlock.cc (gtm_rwlock::gtm_rwlock): Adapt. * libitm/config/x86/sjlj.S (_ITM_beginTransaction): Fix HTM fastpath. * libitm/libitm_i.h (htm_fastpath): Remove declaration. * libitm/method-serial.cc (htm_mg): Adapt. (gtm_thread::serialirr_mode): Adapt. * libitm/query.cc (_ITM_inTransaction, _ITM_getTransactionId): Adapt. From-SVN: r232735
85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
/* Copyright (C) 2008-2016 Free Software Foundation, Inc.
|
|
Contributed by Richard Henderson <rth@redhat.com>.
|
|
|
|
This file is part of the GNU Transactional Memory Library (libitm).
|
|
|
|
Libitm 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 of the License, or
|
|
(at your option) any later version.
|
|
|
|
Libitm 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.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include "libitm_i.h"
|
|
|
|
using namespace GTM;
|
|
|
|
int ITM_REGPARM
|
|
_ITM_versionCompatible (int version)
|
|
{
|
|
return version == _ITM_VERSION_NO;
|
|
}
|
|
|
|
|
|
const char * ITM_REGPARM
|
|
_ITM_libraryVersion (void)
|
|
{
|
|
return "GNU libitm " _ITM_VERSION;
|
|
}
|
|
|
|
|
|
_ITM_howExecuting ITM_REGPARM
|
|
_ITM_inTransaction (void)
|
|
{
|
|
#if defined(USE_HTM_FASTPATH)
|
|
// If we use the HTM fastpath, we cannot reliably detect whether we are
|
|
// in a transaction because this function can be called outside of
|
|
// a transaction and thus we can't deduce this by looking at just the serial
|
|
// lock. This function isn't used in practice currently, so the easiest
|
|
// way to handle it is to just abort.
|
|
if (gtm_thread::serial_lock.get_htm_fastpath() && htm_transaction_active())
|
|
htm_abort();
|
|
#endif
|
|
struct gtm_thread *tx = gtm_thr();
|
|
if (tx && (tx->nesting > 0))
|
|
{
|
|
if (tx->state & gtm_thread::STATE_IRREVOCABLE)
|
|
return inIrrevocableTransaction;
|
|
else
|
|
return inRetryableTransaction;
|
|
}
|
|
return outsideTransaction;
|
|
}
|
|
|
|
|
|
_ITM_transactionId_t ITM_REGPARM
|
|
_ITM_getTransactionId (void)
|
|
{
|
|
#if defined(USE_HTM_FASTPATH)
|
|
// See ITM_inTransaction.
|
|
if (gtm_thread::serial_lock.get_htm_fastpath() && htm_transaction_active())
|
|
htm_abort();
|
|
#endif
|
|
struct gtm_thread *tx = gtm_thr();
|
|
return (tx && (tx->nesting > 0)) ? tx->id : _ITM_noTransactionId;
|
|
}
|
|
|
|
|
|
void ITM_REGPARM ITM_NORETURN
|
|
_ITM_error (const _ITM_srcLocation * loc UNUSED, int errorCode UNUSED)
|
|
{
|
|
abort ();
|
|
}
|