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10 Commits

Author SHA1 Message Date
Torvald Riegel b679c81340 Ask dispatch whether it requires serial mode. 
* retry.cc (gtm_thread::decide_begin_dispatch): Ask dispatch whether
	it requires serial mode instead of assuming that for certain
	dispatchs.
	* dispatch.h (abi_dispatch::requires_serial): New.
	(abi_dispatch::abi_dispatch): Adapt.
	* method-gl.cc (gl_wt_dispatch::gl_wt_dispatch): Adapt.
	* method-ml.cc (ml_wt_dispatch::ml_wt_dispatch): Same.
	* method-serial.cc (serialirr_dispatch::serialirr_dispatch,
	serial_dispatch::serial_dispatch,
	serialirr_onwrite_dispatch::serialirr_onwrite_dispatch): Same.

From-SVN: r192777
 2012-10-24 19:52:02 +00:00
Torvald Riegel 63b08143d6 libitm: Put gl_wt global lock on separate cache line. 
libitm/
	* method-gl.cc (gl_wt_dispatch::orec): Put on separate cacheline.

From-SVN: r184403
 2012-02-20 20:57:37 +00:00
Torvald Riegel 4c9bd6acb0 libitm: Optimize synchronization in gl_wt rollback. 
libitm/
	* method-gl.cc (gl_wt_dispatch::rollback): Optimize memory orders.

From-SVN: r184402
 2012-02-20 20:57:23 +00:00
Torvald Riegel 651ff4152e libitm: Remove obsolete handling of prior serial lock corner cases in gl_wt. 
libitm/
	* method-gl.cc (gl_wt_dispatch::trycommit): Remove handling of
	serial mode corner cases made obsolete by prior gtm_rwlock changes.
	(gl_wt_dispatch.rollback): Same.

From-SVN: r184401
 2012-02-20 20:57:09 +00:00
Torvald Riegel efee0113e8 libitm: Optimize memory order requiremens in gl_wt pre_write. 
libtim/
	* method-gl.cc (gl_wt_dispatch::pre_write): Optimize memory orders.

From-SVN: r184400
 2012-02-20 20:56:56 +00:00
Torvald Riegel 33a03827d2 libitm: Add missing undo-logging of RfW src regions in gl_wt memtransfer. 
libitm/
	* method-gl.cc (gl_wt_dispatch::memtransfer_static): Add missing undo
	for RfW src.  Optimize number of calls to gtm_thr.

From-SVN: r184399
 2012-02-20 20:56:42 +00:00
Torvald Riegel 11f30bb0e4 libitm: Optimize undo log. 
libitm/
	* local.cc (GTM_LB): Use GTM::gtm_undolog.
	(GTM::gtm_thread::drop_references_undolog): Remove.
	(GTM::gtm_thread::commit_undolog,
	GTM::gtm_thread::rollback_undolog): Move to ...
	* libitm_i.h (GTM::gtm_undolog): ...here. New.
	(GTM::gtm_undolog_entry): Remove.
	(GTM::gtm_thread): Adapt.
	* beginend.cc (GTM::gtm_thread::rollback): Adapt.
	(GTM::gtm_thread::trycommit): Adapt.
	* method-serial.cc (serial_dispatch::log): Adapt.
	* method-gl.cc (gl_wt_dispatch::pre_write): Adapt.
	(gl_wt_dispatch::store): Fix likely/unlikely.
	* containers.h (GTM::vector::resize): Add additional_capacity
	parameter and handle it.
	(GTM::vector::resize_noinline): New/adapt.
	(GTM::vector::push): New.

From-SVN: r182992
 2012-01-08 14:13:49 +00:00
Torvald Riegel 799142bf74 libitm: Fixed conversion to C++11 atomics. 
libitm/
	* beginend.cc (GTM::gtm_thread::begin_transaction): Add comment.
	(GTM::gtm_thread::try_commit): Changed memory order.
	* config/linux/alpha/futex_bits.h (sys_futex0): Take atomic int
	as parameter.
	* config/linux/x86/futex_bits.h (sys_futex0): Same.
	* config/linux/sh/futex_bits.h (sys_futex0): Same.
	* config/linux/futex_bits.h (sys_futex0): Same.
	* config/linux/futex.cc (futex_wait, futex_wake): Same.
	* config/linux/futex.h (futex_wait, futex_wake): Same.
	* config/linux/rwlock.h (gtm_rwlock::writers,
	gtm_rwlock::writer_readers, gtm_rwlock::readers): Change to atomic
	ints.
	* config/linux/rwlock.cc (gtm_rwlock::read_lock,
	gtm_rwlock::write_lock_generic, gtm_rwlock::read_unlock,
	gtm_rwlock::write_unlock): Fix memory orders and fences.
	* config/posix/rwlock.cc (gtm_rwlock::read_lock,
	gtm_rwlock::write_lock_generic, gtm_rwlock::read_unlock,
	gtm_rwlock::write_unlock): Same.
	* config/linux/rwlock.h (gtm_rwlock::summary): Change to atomic int.
	* method-gl.cc (gl_mg::init, gl_wt_dispatch::memtransfer_static,
	gl_wt_dispatch::memset_static, gl_wt_dispatch::begin_or_restart):
	Add comments.
	(gl_wt_dispatch::pre_write, gl_wt_dispatch::validate,
	gl_wt_dispatch::load, gl_wt_dispatch::store,
	gl_wt_dispatch::try_commit, gl_wt_dispatch::rollback): Fix memory
	orders and fences.  Add comments.

From-SVN: r182674
 2011-12-24 01:42:20 +00:00
Richard Henderson 36cfbee133 libitm: Conversion to c++11 atomics. 
* local_atomic: New file.
        * libitm_i.h: Include it.
        (gtm_thread::shared_state): Use atomic template.
        * beginend.cc (GTM::gtm_clock): Use atomic template.
        (global_tid): Use atomic template if 64-bit atomics available.
        (gtm_thread::gtm_thread): Update shared_state access.
        (gtm_thread::trycommit): Likewise.
        (choose_code_path): Update global_tid access.
        * method-gl.cc (gl_mg::orec): Use atomic template.  Update all users.
        * stmlock.h (GTM::gtm_clock): Use atomic template.
        (gtm_get_clock, gtm_inc_clock): Update accesses.
        * config/linux/rwlock.cc (gtm_rwlock::read_lock): Remove
        redundant __sync_synchronize after atomic shared_state access.
        * config/posix/rwlock.cc (gtm_rwlock::read_lock): Likewise.
        (gtm_rwlock::write_lock_generic): Likewise.
        (gtm_rwlock::read_unlock): Likewise.
        * config/alpha/target.h (atomic_read_barrier): Remove.
        (atomic_write_barrier): Remove.
        * config/x86/target.h (atomic_read_barrier): Remove.
        (atomic_write_barrier): Remove.

From-SVN: r182294
 2011-12-13 11:11:25 -08:00
Aldy Hernandez 0a35513e4e Merge from transactional-memory branch. 
From-SVN: r181154
 2011-11-08 11:13:41 +00:00