libitm: Fix HTM fastpath.
* 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
diff --git a/libitm/method-serial.cc b/libitm/method-serial.cc
index 1123e34..a151b66 100644
--- a/libitm/method-serial.cc
+++ b/libitm/method-serial.cc
@@ -226,13 +226,13 @@
// Enable the HTM fastpath if the HW is available. The fastpath is
// initially disabled.
#ifdef USE_HTM_FASTPATH
- htm_fastpath = htm_init();
+ gtm_thread::serial_lock.set_htm_fastpath(htm_init());
#endif
}
virtual void fini()
{
// Disable the HTM fastpath.
- htm_fastpath = 0;
+ gtm_thread::serial_lock.set_htm_fastpath(0);
}
};
@@ -292,7 +292,7 @@
#if defined(USE_HTM_FASTPATH)
// HTM fastpath. If we are executing a HW transaction, don't go serial but
// continue. See gtm_thread::begin_transaction.
- if (likely(htm_fastpath && !gtm_thread::serial_lock.is_write_locked()))
+ if (likely(!gtm_thread::serial_lock.htm_fastpath_disabled()))
return;
#endif