gcc/libgomp/lock.c

124 lines
2.8 KiB
C
Raw Normal View History

2021-01-04 10:26:59 +01:00
/* Copyright (C) 2005-2021 Free Software Foundation, Inc.
OpenMP offloading to NVPTX: libgomp changes * Makefile.am (libgomp_la_SOURCES): Add atomic.c, icv.c, icv-device.c. * Makefile.in. Regenerate. * configure.ac [nvptx*-*-*] (libgomp_use_pthreads): Set and use it... (LIBGOMP_USE_PTHREADS): ...here; new define. * configure: Regenerate. * config.h.in: Likewise. * config/posix/affinity.c: Move to... * affinity.c: ...here (new file). Guard use of Pthreads-specific interface by LIBGOMP_USE_PTHREADS. * critical.c: Split out GOMP_atomic_{start,end} into... * atomic.c: ...here (new file). * env.c: Split out ICV definitions into... * icv.c: ...here (new file) and... * icv-device.c: ...here. New file. * config/linux/lock.c (gomp_init_lock_30): Move to generic lock.c. (gomp_destroy_lock_30): Ditto. (gomp_set_lock_30): Ditto. (gomp_unset_lock_30): Ditto. (gomp_test_lock_30): Ditto. (gomp_init_nest_lock_30): Ditto. (gomp_destroy_nest_lock_30): Ditto. (gomp_set_nest_lock_30): Ditto. (gomp_unset_nest_lock_30): Ditto. (gomp_test_nest_lock_30): Ditto. * lock.c: New. * config/nvptx/lock.c: New. * config/nvptx/bar.c: New. * config/nvptx/bar.h: New. * config/nvptx/doacross.h: New. * config/nvptx/error.c: New. * config/nvptx/icv-device.c: New. * config/nvptx/mutex.h: New. * config/nvptx/pool.h: New. * config/nvptx/proc.c: New. * config/nvptx/ptrlock.h: New. * config/nvptx/sem.h: New. * config/nvptx/simple-bar.h: New. * config/nvptx/target.c: New. * config/nvptx/task.c: New. * config/nvptx/team.c: New. * config/nvptx/time.c: New. * config/posix/simple-bar.h: New. * libgomp.h: Guard pthread.h inclusion. Include simple-bar.h. (gomp_num_teams_var): Declare. (struct gomp_thread_pool): Change threads_dock member to gomp_simple_barrier_t. [__nvptx__] (gomp_thread): New implementation. (gomp_thread_attr): Guard by LIBGOMP_USE_PTHREADS. (gomp_thread_destructor): Ditto. (gomp_init_thread_affinity): Ditto. * team.c: Guard uses of Pthreads-specific interfaces by LIBGOMP_USE_PTHREADS. Adjust all uses of threads_dock. (gomp_free_thread) [__nvptx__]: Do not call 'free'. * config/nvptx/alloc.c: Delete. * config/nvptx/barrier.c: Ditto. * config/nvptx/fortran.c: Ditto. * config/nvptx/iter.c: Ditto. * config/nvptx/iter_ull.c: Ditto. * config/nvptx/loop.c: Ditto. * config/nvptx/loop_ull.c: Ditto. * config/nvptx/ordered.c: Ditto. * config/nvptx/parallel.c: Ditto. * config/nvptx/priority_queue.c: Ditto. * config/nvptx/sections.c: Ditto. * config/nvptx/single.c: Ditto. * config/nvptx/splay-tree.c: Ditto. * config/nvptx/work.c: Ditto. * testsuite/libgomp.fortran/fortran.exp (lang_link_flags): Pass -foffload=-lgfortran in addition to -lgfortran. * testsuite/libgomp.oacc-fortran/fortran.exp (lang_link_flags): Ditto. * plugin/plugin-nvptx.c: Include <limits.h>. (struct targ_fn_descriptor): Add new fields. (struct ptx_device): Ditto. Set them... (nvptx_open_device): ...here. (nvptx_adjust_launch_bounds): New. (nvptx_host2dev): Allow NULL 'nvthd'. (nvptx_dev2host): Ditto. (GOMP_OFFLOAD_get_caps): Add GOMP_OFFLOAD_CAP_OPENMP_400. (link_ptx): Adjust log sizes. (nvptx_host2dev): Allow NULL 'nvthd'. (nvptx_dev2host): Ditto. (nvptx_set_clocktick): New. Use it... (GOMP_OFFLOAD_load_image): ...here. Set new targ_fn_descriptor fields. (GOMP_OFFLOAD_dev2dev): New. (nvptx_adjust_launch_bounds): New. (nvptx_stacks_size): New. (nvptx_stacks_alloc): New. (nvptx_stacks_free): New. (GOMP_OFFLOAD_run): New. (GOMP_OFFLOAD_async_run): New (stub). Co-Authored-By: Dmitry Melnik <dm@ispras.ru> Co-Authored-By: Jakub Jelinek <jakub@redhat.com> From-SVN: r242789
2016-11-23 19:36:41 +01:00
Contributed by Richard Henderson <rth@redhat.com>.
This file is part of the GNU Offloading and Multi Processing Library
(libgomp).
Libgomp 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, or (at your option)
any later version.
Libgomp 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/>. */
/* This is a generic implementation of the public OpenMP locking primitives in
terms of internal gomp_mutex_t. It is not meant to be compiled on its own.
It is #include'd from config/{linux,nvptx}/lock.c. */
#include <string.h>
#include "libgomp.h"
/* The internal gomp_mutex_t and the external non-recursive omp_lock_t
have the same form. Re-use it. */
void
gomp_init_lock_30 (omp_lock_t *lock)
{
gomp_mutex_init (lock);
}
void
gomp_destroy_lock_30 (omp_lock_t *lock)
{
gomp_mutex_destroy (lock);
}
void
gomp_set_lock_30 (omp_lock_t *lock)
{
gomp_mutex_lock (lock);
}
void
gomp_unset_lock_30 (omp_lock_t *lock)
{
gomp_mutex_unlock (lock);
}
int
gomp_test_lock_30 (omp_lock_t *lock)
{
int oldval = 0;
return __atomic_compare_exchange_n (lock, &oldval, 1, false,
MEMMODEL_ACQUIRE, MEMMODEL_RELAXED);
}
void
gomp_init_nest_lock_30 (omp_nest_lock_t *lock)
{
memset (lock, '\0', sizeof (*lock));
}
void
gomp_destroy_nest_lock_30 (omp_nest_lock_t *lock)
{
}
void
gomp_set_nest_lock_30 (omp_nest_lock_t *lock)
{
void *me = gomp_icv (true);
if (lock->owner != me)
{
gomp_mutex_lock (&lock->lock);
lock->owner = me;
}
lock->count++;
}
void
gomp_unset_nest_lock_30 (omp_nest_lock_t *lock)
{
if (--lock->count == 0)
{
lock->owner = NULL;
gomp_mutex_unlock (&lock->lock);
}
}
int
gomp_test_nest_lock_30 (omp_nest_lock_t *lock)
{
void *me = gomp_icv (true);
int oldval;
if (lock->owner == me)
return ++lock->count;
oldval = 0;
if (__atomic_compare_exchange_n (&lock->lock, &oldval, 1, false,
MEMMODEL_ACQUIRE, MEMMODEL_RELAXED))
{
lock->owner = me;
lock->count = 1;
return 1;
}
return 0;
}