1430 lines
33 KiB
C
1430 lines
33 KiB
C
/* Copyright (C) 2005-2018 Free Software Foundation, Inc.
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Contributed by Richard Henderson <rth@redhat.com>.
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This file is part of the GNU Offloading and Multi Processing Library
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(libgomp).
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Libgomp is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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/* This file defines the OpenMP internal control variables and arranges
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for them to be initialized from environment variables at startup. */
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#define _GNU_SOURCE
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#include "libgomp.h"
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#include "gomp-constants.h"
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#include <limits.h>
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#ifndef LIBGOMP_OFFLOADED_ONLY
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#include "libgomp_f.h"
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#include "oacc-int.h"
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#include <ctype.h>
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#include <stdlib.h>
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#include <stdio.h>
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#ifdef HAVE_INTTYPES_H
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# include <inttypes.h> /* For PRIu64. */
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#endif
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#ifdef STRING_WITH_STRINGS
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# include <string.h>
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# include <strings.h>
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#else
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# ifdef HAVE_STRING_H
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# include <string.h>
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# else
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# ifdef HAVE_STRINGS_H
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# include <strings.h>
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# endif
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# endif
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#endif
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#include <errno.h>
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#include "thread-stacksize.h"
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#ifndef HAVE_STRTOULL
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# define strtoull(ptr, eptr, base) strtoul (ptr, eptr, base)
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#endif
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#endif /* LIBGOMP_OFFLOADED_ONLY */
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#include "secure_getenv.h"
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struct gomp_task_icv gomp_global_icv = {
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.nthreads_var = 1,
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.thread_limit_var = UINT_MAX,
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.run_sched_var = GFS_DYNAMIC,
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.run_sched_chunk_size = 1,
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.default_device_var = 0,
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.dyn_var = false,
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.nest_var = false,
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.bind_var = omp_proc_bind_false,
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.target_data = NULL
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};
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unsigned long gomp_max_active_levels_var = INT_MAX;
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bool gomp_cancel_var = false;
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int gomp_max_task_priority_var = 0;
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#ifndef HAVE_SYNC_BUILTINS
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gomp_mutex_t gomp_managed_threads_lock;
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#endif
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unsigned long gomp_available_cpus = 1, gomp_managed_threads = 1;
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unsigned long long gomp_spin_count_var, gomp_throttled_spin_count_var;
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unsigned long *gomp_nthreads_var_list, gomp_nthreads_var_list_len;
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char *gomp_bind_var_list;
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unsigned long gomp_bind_var_list_len;
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void **gomp_places_list;
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unsigned long gomp_places_list_len;
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int gomp_debug_var;
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unsigned int gomp_num_teams_var;
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bool gomp_display_affinity_var;
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char *gomp_affinity_format_var = "level %L thread %i affinity %A";
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size_t gomp_affinity_format_len;
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char *goacc_device_type;
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int goacc_device_num;
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int goacc_default_dims[GOMP_DIM_MAX];
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#ifndef LIBGOMP_OFFLOADED_ONLY
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/* Parse the OMP_SCHEDULE environment variable. */
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static void
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parse_schedule (void)
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{
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char *env, *end;
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unsigned long value;
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int monotonic = 0;
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env = getenv ("OMP_SCHEDULE");
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if (env == NULL)
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return;
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while (isspace ((unsigned char) *env))
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++env;
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if (strncasecmp (env, "monotonic", 9) == 0)
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{
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monotonic = 1;
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env += 9;
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}
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else if (strncasecmp (env, "nonmonotonic", 12) == 0)
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{
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monotonic = -1;
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env += 12;
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}
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if (monotonic)
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{
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while (isspace ((unsigned char) *env))
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++env;
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if (*env != ':')
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goto unknown;
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++env;
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while (isspace ((unsigned char) *env))
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++env;
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}
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if (strncasecmp (env, "static", 6) == 0)
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{
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gomp_global_icv.run_sched_var = GFS_STATIC;
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env += 6;
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}
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else if (strncasecmp (env, "dynamic", 7) == 0)
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{
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gomp_global_icv.run_sched_var = GFS_DYNAMIC;
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env += 7;
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}
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else if (strncasecmp (env, "guided", 6) == 0)
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{
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gomp_global_icv.run_sched_var = GFS_GUIDED;
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env += 6;
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}
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else if (strncasecmp (env, "auto", 4) == 0)
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{
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gomp_global_icv.run_sched_var = GFS_AUTO;
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env += 4;
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}
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else
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goto unknown;
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if (monotonic == 1
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|| (monotonic == 0 && gomp_global_icv.run_sched_var == GFS_STATIC))
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gomp_global_icv.run_sched_var |= GFS_MONOTONIC;
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while (isspace ((unsigned char) *env))
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++env;
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if (*env == '\0')
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{
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gomp_global_icv.run_sched_chunk_size
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= (gomp_global_icv.run_sched_var & ~GFS_MONOTONIC) != GFS_STATIC;
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return;
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}
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if (*env++ != ',')
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goto unknown;
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while (isspace ((unsigned char) *env))
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++env;
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if (*env == '\0')
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goto invalid;
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errno = 0;
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value = strtoul (env, &end, 10);
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if (errno)
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goto invalid;
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while (isspace ((unsigned char) *end))
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++end;
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if (*end != '\0')
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goto invalid;
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if ((int)value != value)
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goto invalid;
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if (value == 0
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&& (gomp_global_icv.run_sched_var & ~GFS_MONOTONIC) != GFS_STATIC)
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value = 1;
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gomp_global_icv.run_sched_chunk_size = value;
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return;
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unknown:
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gomp_error ("Unknown value for environment variable OMP_SCHEDULE");
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return;
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invalid:
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gomp_error ("Invalid value for chunk size in "
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"environment variable OMP_SCHEDULE");
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return;
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}
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/* Parse an unsigned long environment variable. Return true if one was
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present and it was successfully parsed. If SECURE, use secure_getenv to the
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environment variable. */
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static bool
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parse_unsigned_long_1 (const char *name, unsigned long *pvalue, bool allow_zero,
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bool secure)
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{
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char *env, *end;
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unsigned long value;
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env = (secure ? secure_getenv (name) : getenv (name));
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if (env == NULL)
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return false;
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while (isspace ((unsigned char) *env))
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++env;
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if (*env == '\0')
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goto invalid;
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errno = 0;
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value = strtoul (env, &end, 10);
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if (errno || (long) value <= 0 - allow_zero)
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goto invalid;
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while (isspace ((unsigned char) *end))
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++end;
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if (*end != '\0')
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goto invalid;
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*pvalue = value;
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return true;
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invalid:
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gomp_error ("Invalid value for environment variable %s", name);
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return false;
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}
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/* As parse_unsigned_long_1, but always use getenv. */
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static bool
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parse_unsigned_long (const char *name, unsigned long *pvalue, bool allow_zero)
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{
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return parse_unsigned_long_1 (name, pvalue, allow_zero, false);
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}
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/* Parse a positive int environment variable. Return true if one was
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present and it was successfully parsed. If SECURE, use secure_getenv to the
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environment variable. */
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static bool
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parse_int_1 (const char *name, int *pvalue, bool allow_zero, bool secure)
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{
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unsigned long value;
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if (!parse_unsigned_long_1 (name, &value, allow_zero, secure))
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return false;
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if (value > INT_MAX)
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{
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gomp_error ("Invalid value for environment variable %s", name);
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return false;
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}
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*pvalue = (int) value;
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return true;
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}
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/* As parse_int_1, but use getenv. */
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static bool
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parse_int (const char *name, int *pvalue, bool allow_zero)
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{
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return parse_int_1 (name, pvalue, allow_zero, false);
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}
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/* As parse_int_1, but use getenv_secure. */
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static bool
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parse_int_secure (const char *name, int *pvalue, bool allow_zero)
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{
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return parse_int_1 (name, pvalue, allow_zero, true);
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}
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/* Parse an unsigned long list environment variable. Return true if one was
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present and it was successfully parsed. */
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static bool
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parse_unsigned_long_list (const char *name, unsigned long *p1stvalue,
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unsigned long **pvalues,
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unsigned long *pnvalues)
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{
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char *env, *end;
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unsigned long value, *values = NULL;
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env = getenv (name);
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if (env == NULL)
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return false;
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while (isspace ((unsigned char) *env))
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++env;
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if (*env == '\0')
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goto invalid;
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errno = 0;
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value = strtoul (env, &end, 10);
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if (errno || (long) value <= 0)
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goto invalid;
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while (isspace ((unsigned char) *end))
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++end;
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if (*end != '\0')
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{
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if (*end == ',')
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{
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unsigned long nvalues = 0, nalloced = 0;
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do
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{
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env = end + 1;
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if (nvalues == nalloced)
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{
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unsigned long *n;
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nalloced = nalloced ? nalloced * 2 : 16;
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n = realloc (values, nalloced * sizeof (unsigned long));
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if (n == NULL)
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{
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free (values);
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gomp_error ("Out of memory while trying to parse"
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" environment variable %s", name);
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return false;
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}
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values = n;
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if (nvalues == 0)
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values[nvalues++] = value;
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}
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while (isspace ((unsigned char) *env))
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++env;
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if (*env == '\0')
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goto invalid;
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errno = 0;
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value = strtoul (env, &end, 10);
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if (errno || (long) value <= 0)
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goto invalid;
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values[nvalues++] = value;
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while (isspace ((unsigned char) *end))
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++end;
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if (*end == '\0')
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break;
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if (*end != ',')
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goto invalid;
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}
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while (1);
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*p1stvalue = values[0];
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*pvalues = values;
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*pnvalues = nvalues;
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return true;
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}
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goto invalid;
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}
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*p1stvalue = value;
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return true;
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invalid:
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free (values);
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gomp_error ("Invalid value for environment variable %s", name);
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return false;
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}
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/* Parse environment variable set to a boolean or list of omp_proc_bind_t
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enum values. Return true if one was present and it was successfully
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parsed. */
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static bool
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parse_bind_var (const char *name, char *p1stvalue,
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char **pvalues, unsigned long *pnvalues)
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{
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char *env;
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char value = omp_proc_bind_false, *values = NULL;
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int i;
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static struct proc_bind_kinds
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{
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const char name[7];
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const char len;
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omp_proc_bind_t kind;
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} kinds[] =
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{
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{ "false", 5, omp_proc_bind_false },
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{ "true", 4, omp_proc_bind_true },
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{ "master", 6, omp_proc_bind_master },
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{ "close", 5, omp_proc_bind_close },
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{ "spread", 6, omp_proc_bind_spread }
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};
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env = getenv (name);
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if (env == NULL)
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return false;
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|
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while (isspace ((unsigned char) *env))
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++env;
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if (*env == '\0')
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goto invalid;
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for (i = 0; i < 5; i++)
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if (strncasecmp (env, kinds[i].name, kinds[i].len) == 0)
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{
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value = kinds[i].kind;
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env += kinds[i].len;
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break;
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}
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if (i == 5)
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goto invalid;
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while (isspace ((unsigned char) *env))
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++env;
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if (*env != '\0')
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{
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if (*env == ',')
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{
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unsigned long nvalues = 0, nalloced = 0;
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|
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if (value == omp_proc_bind_false
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|| value == omp_proc_bind_true)
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goto invalid;
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do
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{
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env++;
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if (nvalues == nalloced)
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{
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char *n;
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nalloced = nalloced ? nalloced * 2 : 16;
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n = realloc (values, nalloced);
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if (n == NULL)
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{
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free (values);
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gomp_error ("Out of memory while trying to parse"
|
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" environment variable %s", name);
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return false;
|
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}
|
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values = n;
|
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if (nvalues == 0)
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values[nvalues++] = value;
|
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}
|
|
|
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while (isspace ((unsigned char) *env))
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++env;
|
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if (*env == '\0')
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goto invalid;
|
|
|
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for (i = 2; i < 5; i++)
|
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if (strncasecmp (env, kinds[i].name, kinds[i].len) == 0)
|
|
{
|
|
value = kinds[i].kind;
|
|
env += kinds[i].len;
|
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break;
|
|
}
|
|
if (i == 5)
|
|
goto invalid;
|
|
|
|
values[nvalues++] = value;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env == '\0')
|
|
break;
|
|
if (*env != ',')
|
|
goto invalid;
|
|
}
|
|
while (1);
|
|
*p1stvalue = values[0];
|
|
*pvalues = values;
|
|
*pnvalues = nvalues;
|
|
return true;
|
|
}
|
|
goto invalid;
|
|
}
|
|
|
|
*p1stvalue = value;
|
|
return true;
|
|
|
|
invalid:
|
|
free (values);
|
|
gomp_error ("Invalid value for environment variable %s", name);
|
|
return false;
|
|
}
|
|
|
|
static bool
|
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parse_one_place (char **envp, bool *negatep, unsigned long *lenp,
|
|
long *stridep)
|
|
{
|
|
char *env = *envp, *start;
|
|
void *p = gomp_places_list ? gomp_places_list[gomp_places_list_len] : NULL;
|
|
unsigned long len = 1;
|
|
long stride = 1;
|
|
int pass;
|
|
bool any_negate = false;
|
|
*negatep = false;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env == '!')
|
|
{
|
|
*negatep = true;
|
|
++env;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
}
|
|
if (*env != '{')
|
|
return false;
|
|
++env;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
start = env;
|
|
for (pass = 0; pass < (any_negate ? 2 : 1); pass++)
|
|
{
|
|
env = start;
|
|
do
|
|
{
|
|
unsigned long this_num, this_len = 1;
|
|
long this_stride = 1;
|
|
bool this_negate = (*env == '!');
|
|
if (this_negate)
|
|
{
|
|
if (gomp_places_list)
|
|
any_negate = true;
|
|
++env;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
}
|
|
|
|
errno = 0;
|
|
this_num = strtoul (env, &env, 10);
|
|
if (errno)
|
|
return false;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env == ':')
|
|
{
|
|
++env;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
errno = 0;
|
|
this_len = strtoul (env, &env, 10);
|
|
if (errno || this_len == 0)
|
|
return false;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env == ':')
|
|
{
|
|
++env;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
errno = 0;
|
|
this_stride = strtol (env, &env, 10);
|
|
if (errno)
|
|
return false;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
}
|
|
}
|
|
if (this_negate && this_len != 1)
|
|
return false;
|
|
if (gomp_places_list && pass == this_negate)
|
|
{
|
|
if (this_negate)
|
|
{
|
|
if (!gomp_affinity_remove_cpu (p, this_num))
|
|
return false;
|
|
}
|
|
else if (!gomp_affinity_add_cpus (p, this_num, this_len,
|
|
this_stride, false))
|
|
return false;
|
|
}
|
|
if (*env == '}')
|
|
break;
|
|
if (*env != ',')
|
|
return false;
|
|
++env;
|
|
}
|
|
while (1);
|
|
}
|
|
|
|
++env;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env == ':')
|
|
{
|
|
++env;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
errno = 0;
|
|
len = strtoul (env, &env, 10);
|
|
if (errno || len == 0 || len >= 65536)
|
|
return false;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env == ':')
|
|
{
|
|
++env;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
errno = 0;
|
|
stride = strtol (env, &env, 10);
|
|
if (errno)
|
|
return false;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
}
|
|
}
|
|
if (*negatep && len != 1)
|
|
return false;
|
|
*envp = env;
|
|
*lenp = len;
|
|
*stridep = stride;
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
parse_places_var (const char *name, bool ignore)
|
|
{
|
|
char *env = getenv (name), *end;
|
|
bool any_negate = false;
|
|
int level = 0;
|
|
unsigned long count = 0;
|
|
if (env == NULL)
|
|
return false;
|
|
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env == '\0')
|
|
goto invalid;
|
|
|
|
if (strncasecmp (env, "threads", 7) == 0)
|
|
{
|
|
env += 7;
|
|
level = 1;
|
|
}
|
|
else if (strncasecmp (env, "cores", 5) == 0)
|
|
{
|
|
env += 5;
|
|
level = 2;
|
|
}
|
|
else if (strncasecmp (env, "sockets", 7) == 0)
|
|
{
|
|
env += 7;
|
|
level = 3;
|
|
}
|
|
if (level)
|
|
{
|
|
count = ULONG_MAX;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env != '\0')
|
|
{
|
|
if (*env++ != '(')
|
|
goto invalid;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
|
|
errno = 0;
|
|
count = strtoul (env, &end, 10);
|
|
if (errno)
|
|
goto invalid;
|
|
env = end;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env != ')')
|
|
goto invalid;
|
|
++env;
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env != '\0')
|
|
goto invalid;
|
|
}
|
|
|
|
if (ignore)
|
|
return false;
|
|
|
|
return gomp_affinity_init_level (level, count, false);
|
|
}
|
|
|
|
count = 0;
|
|
end = env;
|
|
do
|
|
{
|
|
bool negate;
|
|
unsigned long len;
|
|
long stride;
|
|
if (!parse_one_place (&end, &negate, &len, &stride))
|
|
goto invalid;
|
|
if (negate)
|
|
{
|
|
if (!any_negate)
|
|
count++;
|
|
any_negate = true;
|
|
}
|
|
else
|
|
count += len;
|
|
if (count > 65536)
|
|
goto invalid;
|
|
if (*end == '\0')
|
|
break;
|
|
if (*end != ',')
|
|
goto invalid;
|
|
end++;
|
|
}
|
|
while (1);
|
|
|
|
if (ignore)
|
|
return false;
|
|
|
|
gomp_places_list_len = 0;
|
|
gomp_places_list = gomp_affinity_alloc (count, false);
|
|
if (gomp_places_list == NULL)
|
|
return false;
|
|
|
|
do
|
|
{
|
|
bool negate;
|
|
unsigned long len;
|
|
long stride;
|
|
gomp_affinity_init_place (gomp_places_list[gomp_places_list_len]);
|
|
if (!parse_one_place (&env, &negate, &len, &stride))
|
|
goto invalid;
|
|
if (negate)
|
|
{
|
|
void *p;
|
|
for (count = 0; count < gomp_places_list_len; count++)
|
|
if (gomp_affinity_same_place
|
|
(gomp_places_list[count],
|
|
gomp_places_list[gomp_places_list_len]))
|
|
break;
|
|
if (count == gomp_places_list_len)
|
|
{
|
|
gomp_error ("Trying to remove a non-existing place from list "
|
|
"of places");
|
|
goto invalid;
|
|
}
|
|
p = gomp_places_list[count];
|
|
memmove (&gomp_places_list[count],
|
|
&gomp_places_list[count + 1],
|
|
(gomp_places_list_len - count - 1) * sizeof (void *));
|
|
--gomp_places_list_len;
|
|
gomp_places_list[gomp_places_list_len] = p;
|
|
}
|
|
else if (len == 1)
|
|
++gomp_places_list_len;
|
|
else
|
|
{
|
|
for (count = 0; count < len - 1; count++)
|
|
if (!gomp_affinity_copy_place
|
|
(gomp_places_list[gomp_places_list_len + count + 1],
|
|
gomp_places_list[gomp_places_list_len + count],
|
|
stride))
|
|
goto invalid;
|
|
gomp_places_list_len += len;
|
|
}
|
|
if (*env == '\0')
|
|
break;
|
|
env++;
|
|
}
|
|
while (1);
|
|
|
|
if (gomp_places_list_len == 0)
|
|
{
|
|
gomp_error ("All places have been removed");
|
|
goto invalid;
|
|
}
|
|
if (!gomp_affinity_finalize_place_list (false))
|
|
goto invalid;
|
|
return true;
|
|
|
|
invalid:
|
|
free (gomp_places_list);
|
|
gomp_places_list = NULL;
|
|
gomp_places_list_len = 0;
|
|
gomp_error ("Invalid value for environment variable %s", name);
|
|
return false;
|
|
}
|
|
|
|
/* Parse the OMP_STACKSIZE environment varible. Return true if one was
|
|
present and it was successfully parsed. */
|
|
|
|
static bool
|
|
parse_stacksize (const char *name, unsigned long *pvalue)
|
|
{
|
|
char *env, *end;
|
|
unsigned long value, shift = 10;
|
|
|
|
env = getenv (name);
|
|
if (env == NULL)
|
|
return false;
|
|
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env == '\0')
|
|
goto invalid;
|
|
|
|
errno = 0;
|
|
value = strtoul (env, &end, 10);
|
|
if (errno)
|
|
goto invalid;
|
|
|
|
while (isspace ((unsigned char) *end))
|
|
++end;
|
|
if (*end != '\0')
|
|
{
|
|
switch (tolower ((unsigned char) *end))
|
|
{
|
|
case 'b':
|
|
shift = 0;
|
|
break;
|
|
case 'k':
|
|
break;
|
|
case 'm':
|
|
shift = 20;
|
|
break;
|
|
case 'g':
|
|
shift = 30;
|
|
break;
|
|
default:
|
|
goto invalid;
|
|
}
|
|
++end;
|
|
while (isspace ((unsigned char) *end))
|
|
++end;
|
|
if (*end != '\0')
|
|
goto invalid;
|
|
}
|
|
|
|
if (((value << shift) >> shift) != value)
|
|
goto invalid;
|
|
|
|
*pvalue = value << shift;
|
|
return true;
|
|
|
|
invalid:
|
|
gomp_error ("Invalid value for environment variable %s", name);
|
|
return false;
|
|
}
|
|
|
|
/* Parse the GOMP_SPINCOUNT environment varible. Return true if one was
|
|
present and it was successfully parsed. */
|
|
|
|
static bool
|
|
parse_spincount (const char *name, unsigned long long *pvalue)
|
|
{
|
|
char *env, *end;
|
|
unsigned long long value, mult = 1;
|
|
|
|
env = getenv (name);
|
|
if (env == NULL)
|
|
return false;
|
|
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env == '\0')
|
|
goto invalid;
|
|
|
|
if (strncasecmp (env, "infinite", 8) == 0
|
|
|| strncasecmp (env, "infinity", 8) == 0)
|
|
{
|
|
value = ~0ULL;
|
|
end = env + 8;
|
|
goto check_tail;
|
|
}
|
|
|
|
errno = 0;
|
|
value = strtoull (env, &end, 10);
|
|
if (errno)
|
|
goto invalid;
|
|
|
|
while (isspace ((unsigned char) *end))
|
|
++end;
|
|
if (*end != '\0')
|
|
{
|
|
switch (tolower ((unsigned char) *end))
|
|
{
|
|
case 'k':
|
|
mult = 1000LL;
|
|
break;
|
|
case 'm':
|
|
mult = 1000LL * 1000LL;
|
|
break;
|
|
case 'g':
|
|
mult = 1000LL * 1000LL * 1000LL;
|
|
break;
|
|
case 't':
|
|
mult = 1000LL * 1000LL * 1000LL * 1000LL;
|
|
break;
|
|
default:
|
|
goto invalid;
|
|
}
|
|
++end;
|
|
check_tail:
|
|
while (isspace ((unsigned char) *end))
|
|
++end;
|
|
if (*end != '\0')
|
|
goto invalid;
|
|
}
|
|
|
|
if (value > ~0ULL / mult)
|
|
value = ~0ULL;
|
|
else
|
|
value *= mult;
|
|
|
|
*pvalue = value;
|
|
return true;
|
|
|
|
invalid:
|
|
gomp_error ("Invalid value for environment variable %s", name);
|
|
return false;
|
|
}
|
|
|
|
/* Parse a boolean value for environment variable NAME and store the
|
|
result in VALUE. */
|
|
|
|
static void
|
|
parse_boolean (const char *name, bool *value)
|
|
{
|
|
const char *env;
|
|
|
|
env = getenv (name);
|
|
if (env == NULL)
|
|
return;
|
|
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (strncasecmp (env, "true", 4) == 0)
|
|
{
|
|
*value = true;
|
|
env += 4;
|
|
}
|
|
else if (strncasecmp (env, "false", 5) == 0)
|
|
{
|
|
*value = false;
|
|
env += 5;
|
|
}
|
|
else
|
|
env = "X";
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env != '\0')
|
|
gomp_error ("Invalid value for environment variable %s", name);
|
|
}
|
|
|
|
/* Parse the OMP_WAIT_POLICY environment variable and store the
|
|
result in gomp_active_wait_policy. */
|
|
|
|
static int
|
|
parse_wait_policy (void)
|
|
{
|
|
const char *env;
|
|
int ret = -1;
|
|
|
|
env = getenv ("OMP_WAIT_POLICY");
|
|
if (env == NULL)
|
|
return -1;
|
|
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (strncasecmp (env, "active", 6) == 0)
|
|
{
|
|
ret = 1;
|
|
env += 6;
|
|
}
|
|
else if (strncasecmp (env, "passive", 7) == 0)
|
|
{
|
|
ret = 0;
|
|
env += 7;
|
|
}
|
|
else
|
|
env = "X";
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env == '\0')
|
|
return ret;
|
|
gomp_error ("Invalid value for environment variable OMP_WAIT_POLICY");
|
|
return -1;
|
|
}
|
|
|
|
/* Parse the GOMP_CPU_AFFINITY environment varible. Return true if one was
|
|
present and it was successfully parsed. */
|
|
|
|
static bool
|
|
parse_affinity (bool ignore)
|
|
{
|
|
char *env, *end, *start;
|
|
int pass;
|
|
unsigned long cpu_beg, cpu_end, cpu_stride;
|
|
size_t count = 0, needed;
|
|
|
|
env = getenv ("GOMP_CPU_AFFINITY");
|
|
if (env == NULL)
|
|
return false;
|
|
|
|
start = env;
|
|
for (pass = 0; pass < 2; pass++)
|
|
{
|
|
env = start;
|
|
if (pass == 1)
|
|
{
|
|
if (ignore)
|
|
return false;
|
|
|
|
gomp_places_list_len = 0;
|
|
gomp_places_list = gomp_affinity_alloc (count, true);
|
|
if (gomp_places_list == NULL)
|
|
return false;
|
|
}
|
|
do
|
|
{
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
|
|
errno = 0;
|
|
cpu_beg = strtoul (env, &end, 0);
|
|
if (errno || cpu_beg >= 65536)
|
|
goto invalid;
|
|
cpu_end = cpu_beg;
|
|
cpu_stride = 1;
|
|
|
|
env = end;
|
|
if (*env == '-')
|
|
{
|
|
errno = 0;
|
|
cpu_end = strtoul (++env, &end, 0);
|
|
if (errno || cpu_end >= 65536 || cpu_end < cpu_beg)
|
|
goto invalid;
|
|
|
|
env = end;
|
|
if (*env == ':')
|
|
{
|
|
errno = 0;
|
|
cpu_stride = strtoul (++env, &end, 0);
|
|
if (errno || cpu_stride == 0 || cpu_stride >= 65536)
|
|
goto invalid;
|
|
|
|
env = end;
|
|
}
|
|
}
|
|
|
|
needed = (cpu_end - cpu_beg) / cpu_stride + 1;
|
|
if (pass == 0)
|
|
count += needed;
|
|
else
|
|
{
|
|
while (needed--)
|
|
{
|
|
void *p = gomp_places_list[gomp_places_list_len];
|
|
gomp_affinity_init_place (p);
|
|
if (gomp_affinity_add_cpus (p, cpu_beg, 1, 0, true))
|
|
++gomp_places_list_len;
|
|
cpu_beg += cpu_stride;
|
|
}
|
|
}
|
|
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
|
|
if (*env == ',')
|
|
env++;
|
|
else if (*env == '\0')
|
|
break;
|
|
}
|
|
while (1);
|
|
}
|
|
|
|
if (gomp_places_list_len == 0)
|
|
{
|
|
free (gomp_places_list);
|
|
gomp_places_list = NULL;
|
|
return false;
|
|
}
|
|
return true;
|
|
|
|
invalid:
|
|
gomp_error ("Invalid value for enviroment variable GOMP_CPU_AFFINITY");
|
|
return false;
|
|
}
|
|
|
|
static void
|
|
parse_acc_device_type (void)
|
|
{
|
|
const char *env = getenv ("ACC_DEVICE_TYPE");
|
|
|
|
if (env && *env != '\0')
|
|
goacc_device_type = strdup (env);
|
|
else
|
|
goacc_device_type = NULL;
|
|
}
|
|
|
|
static void
|
|
parse_gomp_openacc_dim (void)
|
|
{
|
|
/* The syntax is the same as for the -fopenacc-dim compilation option. */
|
|
const char *var_name = "GOMP_OPENACC_DIM";
|
|
const char *env_var = getenv (var_name);
|
|
if (!env_var)
|
|
return;
|
|
|
|
const char *pos = env_var;
|
|
int i;
|
|
for (i = 0; *pos && i != GOMP_DIM_MAX; i++)
|
|
{
|
|
if (i && *pos++ != ':')
|
|
break;
|
|
|
|
if (*pos == ':')
|
|
continue;
|
|
|
|
const char *eptr;
|
|
errno = 0;
|
|
long val = strtol (pos, (char **)&eptr, 10);
|
|
if (errno || val < 0 || (unsigned)val != val)
|
|
break;
|
|
|
|
goacc_default_dims[i] = (int)val;
|
|
pos = eptr;
|
|
}
|
|
}
|
|
|
|
static void
|
|
handle_omp_display_env (unsigned long stacksize, int wait_policy)
|
|
{
|
|
const char *env;
|
|
bool display = false;
|
|
bool verbose = false;
|
|
int i;
|
|
|
|
env = getenv ("OMP_DISPLAY_ENV");
|
|
if (env == NULL)
|
|
return;
|
|
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (strncasecmp (env, "true", 4) == 0)
|
|
{
|
|
display = true;
|
|
env += 4;
|
|
}
|
|
else if (strncasecmp (env, "false", 5) == 0)
|
|
{
|
|
display = false;
|
|
env += 5;
|
|
}
|
|
else if (strncasecmp (env, "verbose", 7) == 0)
|
|
{
|
|
display = true;
|
|
verbose = true;
|
|
env += 7;
|
|
}
|
|
else
|
|
env = "X";
|
|
while (isspace ((unsigned char) *env))
|
|
++env;
|
|
if (*env != '\0')
|
|
gomp_error ("Invalid value for environment variable OMP_DISPLAY_ENV");
|
|
|
|
if (!display)
|
|
return;
|
|
|
|
fputs ("\nOPENMP DISPLAY ENVIRONMENT BEGIN\n", stderr);
|
|
|
|
fputs (" _OPENMP = '201511'\n", stderr);
|
|
fprintf (stderr, " OMP_DYNAMIC = '%s'\n",
|
|
gomp_global_icv.dyn_var ? "TRUE" : "FALSE");
|
|
fprintf (stderr, " OMP_NESTED = '%s'\n",
|
|
gomp_global_icv.nest_var ? "TRUE" : "FALSE");
|
|
|
|
fprintf (stderr, " OMP_NUM_THREADS = '%lu", gomp_global_icv.nthreads_var);
|
|
for (i = 1; i < gomp_nthreads_var_list_len; i++)
|
|
fprintf (stderr, ",%lu", gomp_nthreads_var_list[i]);
|
|
fputs ("'\n", stderr);
|
|
|
|
fprintf (stderr, " OMP_SCHEDULE = '");
|
|
if ((gomp_global_icv.run_sched_var & GFS_MONOTONIC))
|
|
{
|
|
if (gomp_global_icv.run_sched_var != (GFS_MONOTONIC | GFS_STATIC))
|
|
fputs ("MONOTONIC:", stderr);
|
|
}
|
|
else if (gomp_global_icv.run_sched_var == GFS_STATIC)
|
|
fputs ("NONMONOTONIC:", stderr);
|
|
switch (gomp_global_icv.run_sched_var & ~GFS_MONOTONIC)
|
|
{
|
|
case GFS_RUNTIME:
|
|
fputs ("RUNTIME", stderr);
|
|
if (gomp_global_icv.run_sched_chunk_size != 1)
|
|
fprintf (stderr, ",%d", gomp_global_icv.run_sched_chunk_size);
|
|
break;
|
|
case GFS_STATIC:
|
|
fputs ("STATIC", stderr);
|
|
if (gomp_global_icv.run_sched_chunk_size != 0)
|
|
fprintf (stderr, ",%d", gomp_global_icv.run_sched_chunk_size);
|
|
break;
|
|
case GFS_DYNAMIC:
|
|
fputs ("DYNAMIC", stderr);
|
|
if (gomp_global_icv.run_sched_chunk_size != 1)
|
|
fprintf (stderr, ",%d", gomp_global_icv.run_sched_chunk_size);
|
|
break;
|
|
case GFS_GUIDED:
|
|
fputs ("GUIDED", stderr);
|
|
if (gomp_global_icv.run_sched_chunk_size != 1)
|
|
fprintf (stderr, ",%d", gomp_global_icv.run_sched_chunk_size);
|
|
break;
|
|
case GFS_AUTO:
|
|
fputs ("AUTO", stderr);
|
|
break;
|
|
}
|
|
fputs ("'\n", stderr);
|
|
|
|
fputs (" OMP_PROC_BIND = '", stderr);
|
|
switch (gomp_global_icv.bind_var)
|
|
{
|
|
case omp_proc_bind_false:
|
|
fputs ("FALSE", stderr);
|
|
break;
|
|
case omp_proc_bind_true:
|
|
fputs ("TRUE", stderr);
|
|
break;
|
|
case omp_proc_bind_master:
|
|
fputs ("MASTER", stderr);
|
|
break;
|
|
case omp_proc_bind_close:
|
|
fputs ("CLOSE", stderr);
|
|
break;
|
|
case omp_proc_bind_spread:
|
|
fputs ("SPREAD", stderr);
|
|
break;
|
|
}
|
|
for (i = 1; i < gomp_bind_var_list_len; i++)
|
|
switch (gomp_bind_var_list[i])
|
|
{
|
|
case omp_proc_bind_master:
|
|
fputs (",MASTER", stderr);
|
|
break;
|
|
case omp_proc_bind_close:
|
|
fputs (",CLOSE", stderr);
|
|
break;
|
|
case omp_proc_bind_spread:
|
|
fputs (",SPREAD", stderr);
|
|
break;
|
|
}
|
|
fputs ("'\n", stderr);
|
|
fputs (" OMP_PLACES = '", stderr);
|
|
for (i = 0; i < gomp_places_list_len; i++)
|
|
{
|
|
fputs ("{", stderr);
|
|
gomp_affinity_print_place (gomp_places_list[i]);
|
|
fputs (i + 1 == gomp_places_list_len ? "}" : "},", stderr);
|
|
}
|
|
fputs ("'\n", stderr);
|
|
|
|
fprintf (stderr, " OMP_STACKSIZE = '%lu'\n", stacksize);
|
|
|
|
/* GOMP's default value is actually neither active nor passive. */
|
|
fprintf (stderr, " OMP_WAIT_POLICY = '%s'\n",
|
|
wait_policy > 0 ? "ACTIVE" : "PASSIVE");
|
|
fprintf (stderr, " OMP_THREAD_LIMIT = '%u'\n",
|
|
gomp_global_icv.thread_limit_var);
|
|
fprintf (stderr, " OMP_MAX_ACTIVE_LEVELS = '%lu'\n",
|
|
gomp_max_active_levels_var);
|
|
|
|
fprintf (stderr, " OMP_CANCELLATION = '%s'\n",
|
|
gomp_cancel_var ? "TRUE" : "FALSE");
|
|
fprintf (stderr, " OMP_DEFAULT_DEVICE = '%d'\n",
|
|
gomp_global_icv.default_device_var);
|
|
fprintf (stderr, " OMP_MAX_TASK_PRIORITY = '%d'\n",
|
|
gomp_max_task_priority_var);
|
|
fprintf (stderr, " OMP_DISPLAY_AFFINITY = '%s'\n",
|
|
gomp_display_affinity_var ? "TRUE" : "FALSE");
|
|
fprintf (stderr, " OMP_AFFINITY_FORMAT = '%s'\n",
|
|
gomp_affinity_format_var);
|
|
|
|
if (verbose)
|
|
{
|
|
fputs (" GOMP_CPU_AFFINITY = ''\n", stderr);
|
|
fprintf (stderr, " GOMP_STACKSIZE = '%lu'\n", stacksize);
|
|
#ifdef HAVE_INTTYPES_H
|
|
fprintf (stderr, " GOMP_SPINCOUNT = '%"PRIu64"'\n",
|
|
(uint64_t) gomp_spin_count_var);
|
|
#else
|
|
fprintf (stderr, " GOMP_SPINCOUNT = '%lu'\n",
|
|
(unsigned long) gomp_spin_count_var);
|
|
#endif
|
|
}
|
|
|
|
fputs ("OPENMP DISPLAY ENVIRONMENT END\n", stderr);
|
|
}
|
|
|
|
|
|
static void __attribute__((constructor))
|
|
initialize_env (void)
|
|
{
|
|
unsigned long thread_limit_var, stacksize = GOMP_DEFAULT_STACKSIZE;
|
|
int wait_policy;
|
|
|
|
/* Do a compile time check that mkomp_h.pl did good job. */
|
|
omp_check_defines ();
|
|
|
|
parse_schedule ();
|
|
parse_boolean ("OMP_DYNAMIC", &gomp_global_icv.dyn_var);
|
|
parse_boolean ("OMP_NESTED", &gomp_global_icv.nest_var);
|
|
parse_boolean ("OMP_CANCELLATION", &gomp_cancel_var);
|
|
parse_boolean ("OMP_DISPLAY_AFFINITY", &gomp_display_affinity_var);
|
|
parse_int ("OMP_DEFAULT_DEVICE", &gomp_global_icv.default_device_var, true);
|
|
parse_int ("OMP_MAX_TASK_PRIORITY", &gomp_max_task_priority_var, true);
|
|
parse_unsigned_long ("OMP_MAX_ACTIVE_LEVELS", &gomp_max_active_levels_var,
|
|
true);
|
|
if (parse_unsigned_long ("OMP_THREAD_LIMIT", &thread_limit_var, false))
|
|
{
|
|
gomp_global_icv.thread_limit_var
|
|
= thread_limit_var > INT_MAX ? UINT_MAX : thread_limit_var;
|
|
}
|
|
parse_int_secure ("GOMP_DEBUG", &gomp_debug_var, true);
|
|
#ifndef HAVE_SYNC_BUILTINS
|
|
gomp_mutex_init (&gomp_managed_threads_lock);
|
|
#endif
|
|
gomp_init_num_threads ();
|
|
gomp_available_cpus = gomp_global_icv.nthreads_var;
|
|
if (!parse_unsigned_long_list ("OMP_NUM_THREADS",
|
|
&gomp_global_icv.nthreads_var,
|
|
&gomp_nthreads_var_list,
|
|
&gomp_nthreads_var_list_len))
|
|
gomp_global_icv.nthreads_var = gomp_available_cpus;
|
|
bool ignore = false;
|
|
if (parse_bind_var ("OMP_PROC_BIND",
|
|
&gomp_global_icv.bind_var,
|
|
&gomp_bind_var_list,
|
|
&gomp_bind_var_list_len)
|
|
&& gomp_global_icv.bind_var == omp_proc_bind_false)
|
|
ignore = true;
|
|
/* Make sure OMP_PLACES and GOMP_CPU_AFFINITY env vars are always
|
|
parsed if present in the environment. If OMP_PROC_BIND was set
|
|
explictly to false, don't populate places list though. If places
|
|
list was successfully set from OMP_PLACES, only parse but don't process
|
|
GOMP_CPU_AFFINITY. If OMP_PROC_BIND was not set in the environment,
|
|
default to OMP_PROC_BIND=true if OMP_PLACES or GOMP_CPU_AFFINITY
|
|
was successfully parsed into a places list, otherwise to
|
|
OMP_PROC_BIND=false. */
|
|
if (parse_places_var ("OMP_PLACES", ignore))
|
|
{
|
|
if (gomp_global_icv.bind_var == omp_proc_bind_false)
|
|
gomp_global_icv.bind_var = true;
|
|
ignore = true;
|
|
}
|
|
if (parse_affinity (ignore))
|
|
{
|
|
if (gomp_global_icv.bind_var == omp_proc_bind_false)
|
|
gomp_global_icv.bind_var = true;
|
|
ignore = true;
|
|
}
|
|
if (gomp_global_icv.bind_var != omp_proc_bind_false)
|
|
gomp_init_affinity ();
|
|
|
|
{
|
|
const char *env = getenv ("OMP_AFFINITY_FORMAT");
|
|
if (env != NULL)
|
|
gomp_set_affinity_format (env, strlen (env));
|
|
}
|
|
|
|
wait_policy = parse_wait_policy ();
|
|
if (!parse_spincount ("GOMP_SPINCOUNT", &gomp_spin_count_var))
|
|
{
|
|
/* Using a rough estimation of 100000 spins per msec,
|
|
use 5 min blocking for OMP_WAIT_POLICY=active,
|
|
3 msec blocking when OMP_WAIT_POLICY is not specificed
|
|
and 0 when OMP_WAIT_POLICY=passive.
|
|
Depending on the CPU speed, this can be e.g. 5 times longer
|
|
or 5 times shorter. */
|
|
if (wait_policy > 0)
|
|
gomp_spin_count_var = 30000000000LL;
|
|
else if (wait_policy < 0)
|
|
gomp_spin_count_var = 300000LL;
|
|
}
|
|
/* gomp_throttled_spin_count_var is used when there are more libgomp
|
|
managed threads than available CPUs. Use very short spinning. */
|
|
if (wait_policy > 0)
|
|
gomp_throttled_spin_count_var = 1000LL;
|
|
else if (wait_policy < 0)
|
|
gomp_throttled_spin_count_var = 100LL;
|
|
if (gomp_throttled_spin_count_var > gomp_spin_count_var)
|
|
gomp_throttled_spin_count_var = gomp_spin_count_var;
|
|
|
|
/* Not strictly environment related, but ordering constructors is tricky. */
|
|
pthread_attr_init (&gomp_thread_attr);
|
|
|
|
if (parse_stacksize ("OMP_STACKSIZE", &stacksize)
|
|
|| parse_stacksize ("GOMP_STACKSIZE", &stacksize)
|
|
|| GOMP_DEFAULT_STACKSIZE)
|
|
{
|
|
int err;
|
|
|
|
err = pthread_attr_setstacksize (&gomp_thread_attr, stacksize);
|
|
|
|
#ifdef PTHREAD_STACK_MIN
|
|
if (err == EINVAL)
|
|
{
|
|
if (stacksize < PTHREAD_STACK_MIN)
|
|
gomp_error ("Stack size less than minimum of %luk",
|
|
PTHREAD_STACK_MIN / 1024ul
|
|
+ (PTHREAD_STACK_MIN % 1024 != 0));
|
|
else
|
|
gomp_error ("Stack size larger than system limit");
|
|
}
|
|
else
|
|
#endif
|
|
if (err != 0)
|
|
gomp_error ("Stack size change failed: %s", strerror (err));
|
|
}
|
|
|
|
handle_omp_display_env (stacksize, wait_policy);
|
|
|
|
/* OpenACC. */
|
|
|
|
if (!parse_int ("ACC_DEVICE_NUM", &goacc_device_num, true))
|
|
goacc_device_num = 0;
|
|
|
|
parse_acc_device_type ();
|
|
parse_gomp_openacc_dim ();
|
|
|
|
goacc_runtime_initialize ();
|
|
}
|
|
#endif /* LIBGOMP_OFFLOADED_ONLY */
|