xref: /freebsd/contrib/llvm-project/openmp/runtime/src/kmp_global.cpp (revision 489b1cf2ecf5b9b4a394857987014bfb09067726)
10b57cec5SDimitry Andric /*
20b57cec5SDimitry Andric  * kmp_global.cpp -- KPTS global variables for runtime support library
30b57cec5SDimitry Andric  */
40b57cec5SDimitry Andric 
50b57cec5SDimitry Andric //===----------------------------------------------------------------------===//
60b57cec5SDimitry Andric //
70b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
80b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information.
90b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
100b57cec5SDimitry Andric //
110b57cec5SDimitry Andric //===----------------------------------------------------------------------===//
120b57cec5SDimitry Andric 
130b57cec5SDimitry Andric #include "kmp.h"
140b57cec5SDimitry Andric #include "kmp_affinity.h"
150b57cec5SDimitry Andric #if KMP_USE_HIER_SCHED
160b57cec5SDimitry Andric #include "kmp_dispatch_hier.h"
170b57cec5SDimitry Andric #endif
180b57cec5SDimitry Andric 
190b57cec5SDimitry Andric kmp_key_t __kmp_gtid_threadprivate_key;
200b57cec5SDimitry Andric 
210b57cec5SDimitry Andric #if KMP_ARCH_X86 || KMP_ARCH_X86_64
220b57cec5SDimitry Andric kmp_cpuinfo_t __kmp_cpuinfo = {0}; // Not initialized
230b57cec5SDimitry Andric #endif
240b57cec5SDimitry Andric 
250b57cec5SDimitry Andric #if KMP_STATS_ENABLED
260b57cec5SDimitry Andric #include "kmp_stats.h"
270b57cec5SDimitry Andric // lock for modifying the global __kmp_stats_list
280b57cec5SDimitry Andric kmp_tas_lock_t __kmp_stats_lock;
290b57cec5SDimitry Andric 
300b57cec5SDimitry Andric // global list of per thread stats, the head is a sentinel node which
310b57cec5SDimitry Andric // accumulates all stats produced before __kmp_create_worker is called.
320b57cec5SDimitry Andric kmp_stats_list *__kmp_stats_list;
330b57cec5SDimitry Andric 
340b57cec5SDimitry Andric // thread local pointer to stats node within list
350b57cec5SDimitry Andric KMP_THREAD_LOCAL kmp_stats_list *__kmp_stats_thread_ptr = NULL;
360b57cec5SDimitry Andric 
370b57cec5SDimitry Andric // gives reference tick for all events (considered the 0 tick)
380b57cec5SDimitry Andric tsc_tick_count __kmp_stats_start_time;
390b57cec5SDimitry Andric #endif
400b57cec5SDimitry Andric 
410b57cec5SDimitry Andric /* ----------------------------------------------------- */
420b57cec5SDimitry Andric /* INITIALIZATION VARIABLES */
430b57cec5SDimitry Andric /* they are syncronized to write during init, but read anytime */
440b57cec5SDimitry Andric volatile int __kmp_init_serial = FALSE;
450b57cec5SDimitry Andric volatile int __kmp_init_gtid = FALSE;
460b57cec5SDimitry Andric volatile int __kmp_init_common = FALSE;
470b57cec5SDimitry Andric volatile int __kmp_init_middle = FALSE;
480b57cec5SDimitry Andric volatile int __kmp_init_parallel = FALSE;
490b57cec5SDimitry Andric #if KMP_USE_MONITOR
500b57cec5SDimitry Andric volatile int __kmp_init_monitor =
510b57cec5SDimitry Andric     0; /* 1 - launched, 2 - actually started (Windows* OS only) */
520b57cec5SDimitry Andric #endif
530b57cec5SDimitry Andric volatile int __kmp_init_user_locks = FALSE;
540b57cec5SDimitry Andric 
550b57cec5SDimitry Andric /* list of address of allocated caches for commons */
560b57cec5SDimitry Andric kmp_cached_addr_t *__kmp_threadpriv_cache_list = NULL;
570b57cec5SDimitry Andric 
580b57cec5SDimitry Andric int __kmp_init_counter = 0;
590b57cec5SDimitry Andric int __kmp_root_counter = 0;
600b57cec5SDimitry Andric int __kmp_version = 0;
610b57cec5SDimitry Andric 
620b57cec5SDimitry Andric std::atomic<kmp_int32> __kmp_team_counter = ATOMIC_VAR_INIT(0);
630b57cec5SDimitry Andric std::atomic<kmp_int32> __kmp_task_counter = ATOMIC_VAR_INIT(0);
640b57cec5SDimitry Andric 
650b57cec5SDimitry Andric size_t __kmp_stksize = KMP_DEFAULT_STKSIZE;
660b57cec5SDimitry Andric #if KMP_USE_MONITOR
670b57cec5SDimitry Andric size_t __kmp_monitor_stksize = 0; // auto adjust
680b57cec5SDimitry Andric #endif
690b57cec5SDimitry Andric size_t __kmp_stkoffset = KMP_DEFAULT_STKOFFSET;
700b57cec5SDimitry Andric int __kmp_stkpadding = KMP_MIN_STKPADDING;
710b57cec5SDimitry Andric 
720b57cec5SDimitry Andric size_t __kmp_malloc_pool_incr = KMP_DEFAULT_MALLOC_POOL_INCR;
730b57cec5SDimitry Andric 
740b57cec5SDimitry Andric // Barrier method defaults, settings, and strings.
750b57cec5SDimitry Andric // branch factor = 2^branch_bits (only relevant for tree & hyper barrier types)
760b57cec5SDimitry Andric kmp_uint32 __kmp_barrier_gather_bb_dflt = 2;
770b57cec5SDimitry Andric /* branch_factor = 4 */ /* hyper2: C78980 */
780b57cec5SDimitry Andric kmp_uint32 __kmp_barrier_release_bb_dflt = 2;
790b57cec5SDimitry Andric /* branch_factor = 4 */ /* hyper2: C78980 */
800b57cec5SDimitry Andric 
810b57cec5SDimitry Andric kmp_bar_pat_e __kmp_barrier_gather_pat_dflt = bp_hyper_bar;
820b57cec5SDimitry Andric /* hyper2: C78980 */
830b57cec5SDimitry Andric kmp_bar_pat_e __kmp_barrier_release_pat_dflt = bp_hyper_bar;
840b57cec5SDimitry Andric /* hyper2: C78980 */
850b57cec5SDimitry Andric 
860b57cec5SDimitry Andric kmp_uint32 __kmp_barrier_gather_branch_bits[bs_last_barrier] = {0};
870b57cec5SDimitry Andric kmp_uint32 __kmp_barrier_release_branch_bits[bs_last_barrier] = {0};
880b57cec5SDimitry Andric kmp_bar_pat_e __kmp_barrier_gather_pattern[bs_last_barrier] = {bp_linear_bar};
890b57cec5SDimitry Andric kmp_bar_pat_e __kmp_barrier_release_pattern[bs_last_barrier] = {bp_linear_bar};
900b57cec5SDimitry Andric char const *__kmp_barrier_branch_bit_env_name[bs_last_barrier] = {
910b57cec5SDimitry Andric     "KMP_PLAIN_BARRIER", "KMP_FORKJOIN_BARRIER"
920b57cec5SDimitry Andric #if KMP_FAST_REDUCTION_BARRIER
930b57cec5SDimitry Andric     ,
940b57cec5SDimitry Andric     "KMP_REDUCTION_BARRIER"
950b57cec5SDimitry Andric #endif // KMP_FAST_REDUCTION_BARRIER
960b57cec5SDimitry Andric };
970b57cec5SDimitry Andric char const *__kmp_barrier_pattern_env_name[bs_last_barrier] = {
980b57cec5SDimitry Andric     "KMP_PLAIN_BARRIER_PATTERN", "KMP_FORKJOIN_BARRIER_PATTERN"
990b57cec5SDimitry Andric #if KMP_FAST_REDUCTION_BARRIER
1000b57cec5SDimitry Andric     ,
1010b57cec5SDimitry Andric     "KMP_REDUCTION_BARRIER_PATTERN"
1020b57cec5SDimitry Andric #endif // KMP_FAST_REDUCTION_BARRIER
1030b57cec5SDimitry Andric };
1040b57cec5SDimitry Andric char const *__kmp_barrier_type_name[bs_last_barrier] = {"plain", "forkjoin"
1050b57cec5SDimitry Andric #if KMP_FAST_REDUCTION_BARRIER
1060b57cec5SDimitry Andric                                                         ,
1070b57cec5SDimitry Andric                                                         "reduction"
1080b57cec5SDimitry Andric #endif // KMP_FAST_REDUCTION_BARRIER
1090b57cec5SDimitry Andric };
1100b57cec5SDimitry Andric char const *__kmp_barrier_pattern_name[bp_last_bar] = {"linear", "tree",
1110b57cec5SDimitry Andric                                                        "hyper", "hierarchical"};
1120b57cec5SDimitry Andric 
1130b57cec5SDimitry Andric int __kmp_allThreadsSpecified = 0;
1140b57cec5SDimitry Andric size_t __kmp_align_alloc = CACHE_LINE;
1150b57cec5SDimitry Andric 
1160b57cec5SDimitry Andric int __kmp_generate_warnings = kmp_warnings_low;
1170b57cec5SDimitry Andric int __kmp_reserve_warn = 0;
1180b57cec5SDimitry Andric int __kmp_xproc = 0;
1190b57cec5SDimitry Andric int __kmp_avail_proc = 0;
1200b57cec5SDimitry Andric size_t __kmp_sys_min_stksize = KMP_MIN_STKSIZE;
1210b57cec5SDimitry Andric int __kmp_sys_max_nth = KMP_MAX_NTH;
1220b57cec5SDimitry Andric int __kmp_max_nth = 0;
1230b57cec5SDimitry Andric int __kmp_cg_max_nth = 0;
1240b57cec5SDimitry Andric int __kmp_teams_max_nth = 0;
1250b57cec5SDimitry Andric int __kmp_threads_capacity = 0;
1260b57cec5SDimitry Andric int __kmp_dflt_team_nth = 0;
1270b57cec5SDimitry Andric int __kmp_dflt_team_nth_ub = 0;
1280b57cec5SDimitry Andric int __kmp_tp_capacity = 0;
1290b57cec5SDimitry Andric int __kmp_tp_cached = 0;
1300b57cec5SDimitry Andric int __kmp_dispatch_num_buffers = KMP_DFLT_DISP_NUM_BUFF;
1310b57cec5SDimitry Andric int __kmp_dflt_max_active_levels = 1; // Nesting off by default
1320b57cec5SDimitry Andric bool __kmp_dflt_max_active_levels_set = false; // Don't override set value
1330b57cec5SDimitry Andric #if KMP_NESTED_HOT_TEAMS
1340b57cec5SDimitry Andric int __kmp_hot_teams_mode = 0; /* 0 - free extra threads when reduced */
1350b57cec5SDimitry Andric /* 1 - keep extra threads when reduced */
1360b57cec5SDimitry Andric int __kmp_hot_teams_max_level = 1; /* nesting level of hot teams */
1370b57cec5SDimitry Andric #endif
1380b57cec5SDimitry Andric enum library_type __kmp_library = library_none;
1390b57cec5SDimitry Andric enum sched_type __kmp_sched =
1400b57cec5SDimitry Andric     kmp_sch_default; /* scheduling method for runtime scheduling */
1410b57cec5SDimitry Andric enum sched_type __kmp_static =
1420b57cec5SDimitry Andric     kmp_sch_static_greedy; /* default static scheduling method */
1430b57cec5SDimitry Andric enum sched_type __kmp_guided =
1440b57cec5SDimitry Andric     kmp_sch_guided_iterative_chunked; /* default guided scheduling method */
1450b57cec5SDimitry Andric enum sched_type __kmp_auto =
1460b57cec5SDimitry Andric     kmp_sch_guided_analytical_chunked; /* default auto scheduling method */
1470b57cec5SDimitry Andric #if KMP_USE_HIER_SCHED
1480b57cec5SDimitry Andric int __kmp_dispatch_hand_threading = 0;
1490b57cec5SDimitry Andric int __kmp_hier_max_units[kmp_hier_layer_e::LAYER_LAST + 1];
1500b57cec5SDimitry Andric int __kmp_hier_threads_per[kmp_hier_layer_e::LAYER_LAST + 1];
1510b57cec5SDimitry Andric kmp_hier_sched_env_t __kmp_hier_scheds = {0, 0, NULL, NULL, NULL};
1520b57cec5SDimitry Andric #endif
1530b57cec5SDimitry Andric int __kmp_dflt_blocktime = KMP_DEFAULT_BLOCKTIME;
1540b57cec5SDimitry Andric #if KMP_USE_MONITOR
1550b57cec5SDimitry Andric int __kmp_monitor_wakeups = KMP_MIN_MONITOR_WAKEUPS;
1560b57cec5SDimitry Andric int __kmp_bt_intervals = KMP_INTERVALS_FROM_BLOCKTIME(KMP_DEFAULT_BLOCKTIME,
1570b57cec5SDimitry Andric                                                       KMP_MIN_MONITOR_WAKEUPS);
1580b57cec5SDimitry Andric #endif
1590b57cec5SDimitry Andric #ifdef KMP_ADJUST_BLOCKTIME
1600b57cec5SDimitry Andric int __kmp_zero_bt = FALSE;
1610b57cec5SDimitry Andric #endif /* KMP_ADJUST_BLOCKTIME */
1620b57cec5SDimitry Andric #ifdef KMP_DFLT_NTH_CORES
1630b57cec5SDimitry Andric int __kmp_ncores = 0;
1640b57cec5SDimitry Andric #endif
1650b57cec5SDimitry Andric int __kmp_chunk = 0;
1660b57cec5SDimitry Andric int __kmp_abort_delay = 0;
1670b57cec5SDimitry Andric #if KMP_OS_LINUX && defined(KMP_TDATA_GTID)
1680b57cec5SDimitry Andric int __kmp_gtid_mode = 3; /* use __declspec(thread) TLS to store gtid */
1690b57cec5SDimitry Andric int __kmp_adjust_gtid_mode = FALSE;
1700b57cec5SDimitry Andric #elif KMP_OS_WINDOWS
1710b57cec5SDimitry Andric int __kmp_gtid_mode = 2; /* use TLS functions to store gtid */
1720b57cec5SDimitry Andric int __kmp_adjust_gtid_mode = FALSE;
1730b57cec5SDimitry Andric #else
1740b57cec5SDimitry Andric int __kmp_gtid_mode = 0; /* select method to get gtid based on #threads */
1750b57cec5SDimitry Andric int __kmp_adjust_gtid_mode = TRUE;
1760b57cec5SDimitry Andric #endif /* KMP_OS_LINUX && defined(KMP_TDATA_GTID) */
1770b57cec5SDimitry Andric #ifdef KMP_TDATA_GTID
1780b57cec5SDimitry Andric KMP_THREAD_LOCAL int __kmp_gtid = KMP_GTID_DNE;
1790b57cec5SDimitry Andric #endif /* KMP_TDATA_GTID */
1800b57cec5SDimitry Andric int __kmp_tls_gtid_min = INT_MAX;
1810b57cec5SDimitry Andric int __kmp_foreign_tp = TRUE;
1820b57cec5SDimitry Andric #if KMP_ARCH_X86 || KMP_ARCH_X86_64
1830b57cec5SDimitry Andric int __kmp_inherit_fp_control = TRUE;
1840b57cec5SDimitry Andric kmp_int16 __kmp_init_x87_fpu_control_word = 0;
1850b57cec5SDimitry Andric kmp_uint32 __kmp_init_mxcsr = 0;
1860b57cec5SDimitry Andric #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */
1870b57cec5SDimitry Andric 
1880b57cec5SDimitry Andric #ifdef USE_LOAD_BALANCE
1890b57cec5SDimitry Andric double __kmp_load_balance_interval = 1.0;
1900b57cec5SDimitry Andric #endif /* USE_LOAD_BALANCE */
1910b57cec5SDimitry Andric 
1920b57cec5SDimitry Andric kmp_nested_nthreads_t __kmp_nested_nth = {NULL, 0, 0};
1930b57cec5SDimitry Andric 
1940b57cec5SDimitry Andric #if KMP_USE_ADAPTIVE_LOCKS
1950b57cec5SDimitry Andric 
1960b57cec5SDimitry Andric kmp_adaptive_backoff_params_t __kmp_adaptive_backoff_params = {
1970b57cec5SDimitry Andric     1, 1024}; // TODO: tune it!
1980b57cec5SDimitry Andric 
1990b57cec5SDimitry Andric #if KMP_DEBUG_ADAPTIVE_LOCKS
2000b57cec5SDimitry Andric const char *__kmp_speculative_statsfile = "-";
2010b57cec5SDimitry Andric #endif
2020b57cec5SDimitry Andric 
2030b57cec5SDimitry Andric #endif // KMP_USE_ADAPTIVE_LOCKS
2040b57cec5SDimitry Andric 
2050b57cec5SDimitry Andric int __kmp_display_env = FALSE;
2060b57cec5SDimitry Andric int __kmp_display_env_verbose = FALSE;
2070b57cec5SDimitry Andric int __kmp_omp_cancellation = FALSE;
2080b57cec5SDimitry Andric 
2090b57cec5SDimitry Andric /* map OMP 3.0 schedule types with our internal schedule types */
2100b57cec5SDimitry Andric enum sched_type __kmp_sch_map[kmp_sched_upper - kmp_sched_lower_ext +
2110b57cec5SDimitry Andric                               kmp_sched_upper_std - kmp_sched_lower - 2] = {
2120b57cec5SDimitry Andric     kmp_sch_static_chunked, // ==> kmp_sched_static            = 1
2130b57cec5SDimitry Andric     kmp_sch_dynamic_chunked, // ==> kmp_sched_dynamic           = 2
2140b57cec5SDimitry Andric     kmp_sch_guided_chunked, // ==> kmp_sched_guided            = 3
2150b57cec5SDimitry Andric     kmp_sch_auto, // ==> kmp_sched_auto              = 4
2160b57cec5SDimitry Andric     kmp_sch_trapezoidal // ==> kmp_sched_trapezoidal       = 101
2170b57cec5SDimitry Andric     // will likely not be used, introduced here just to debug the code
2180b57cec5SDimitry Andric     // of public intel extension schedules
2190b57cec5SDimitry Andric };
2200b57cec5SDimitry Andric 
2210b57cec5SDimitry Andric #if KMP_OS_LINUX
2220b57cec5SDimitry Andric enum clock_function_type __kmp_clock_function;
2230b57cec5SDimitry Andric int __kmp_clock_function_param;
2240b57cec5SDimitry Andric #endif /* KMP_OS_LINUX */
2250b57cec5SDimitry Andric 
2260b57cec5SDimitry Andric #if KMP_MIC_SUPPORTED
2270b57cec5SDimitry Andric enum mic_type __kmp_mic_type = non_mic;
2280b57cec5SDimitry Andric #endif
2290b57cec5SDimitry Andric 
2300b57cec5SDimitry Andric #if KMP_AFFINITY_SUPPORTED
2310b57cec5SDimitry Andric 
2320b57cec5SDimitry Andric KMPAffinity *__kmp_affinity_dispatch = NULL;
2330b57cec5SDimitry Andric 
2340b57cec5SDimitry Andric #if KMP_USE_HWLOC
2350b57cec5SDimitry Andric int __kmp_hwloc_error = FALSE;
2360b57cec5SDimitry Andric hwloc_topology_t __kmp_hwloc_topology = NULL;
2370b57cec5SDimitry Andric int __kmp_numa_detected = FALSE;
2380b57cec5SDimitry Andric int __kmp_tile_depth = 0;
2390b57cec5SDimitry Andric #endif
2400b57cec5SDimitry Andric 
2410b57cec5SDimitry Andric #if KMP_OS_WINDOWS
2420b57cec5SDimitry Andric #if KMP_GROUP_AFFINITY
2430b57cec5SDimitry Andric int __kmp_num_proc_groups = 1;
2440b57cec5SDimitry Andric #endif /* KMP_GROUP_AFFINITY */
2450b57cec5SDimitry Andric kmp_GetActiveProcessorCount_t __kmp_GetActiveProcessorCount = NULL;
2460b57cec5SDimitry Andric kmp_GetActiveProcessorGroupCount_t __kmp_GetActiveProcessorGroupCount = NULL;
2470b57cec5SDimitry Andric kmp_GetThreadGroupAffinity_t __kmp_GetThreadGroupAffinity = NULL;
2480b57cec5SDimitry Andric kmp_SetThreadGroupAffinity_t __kmp_SetThreadGroupAffinity = NULL;
2490b57cec5SDimitry Andric #endif /* KMP_OS_WINDOWS */
2500b57cec5SDimitry Andric 
2510b57cec5SDimitry Andric size_t __kmp_affin_mask_size = 0;
2520b57cec5SDimitry Andric enum affinity_type __kmp_affinity_type = affinity_default;
2530b57cec5SDimitry Andric enum affinity_gran __kmp_affinity_gran = affinity_gran_default;
2540b57cec5SDimitry Andric int __kmp_affinity_gran_levels = -1;
2550b57cec5SDimitry Andric int __kmp_affinity_dups = TRUE;
2560b57cec5SDimitry Andric enum affinity_top_method __kmp_affinity_top_method =
2570b57cec5SDimitry Andric     affinity_top_method_default;
2580b57cec5SDimitry Andric int __kmp_affinity_compact = 0;
2590b57cec5SDimitry Andric int __kmp_affinity_offset = 0;
2600b57cec5SDimitry Andric int __kmp_affinity_verbose = FALSE;
2610b57cec5SDimitry Andric int __kmp_affinity_warnings = TRUE;
2620b57cec5SDimitry Andric int __kmp_affinity_respect_mask = affinity_respect_mask_default;
2630b57cec5SDimitry Andric char *__kmp_affinity_proclist = NULL;
2640b57cec5SDimitry Andric kmp_affin_mask_t *__kmp_affinity_masks = NULL;
2650b57cec5SDimitry Andric unsigned __kmp_affinity_num_masks = 0;
2660b57cec5SDimitry Andric 
2670b57cec5SDimitry Andric char *__kmp_cpuinfo_file = NULL;
2680b57cec5SDimitry Andric 
2690b57cec5SDimitry Andric #endif /* KMP_AFFINITY_SUPPORTED */
2700b57cec5SDimitry Andric 
2710b57cec5SDimitry Andric kmp_nested_proc_bind_t __kmp_nested_proc_bind = {NULL, 0, 0};
2720b57cec5SDimitry Andric int __kmp_affinity_num_places = 0;
2730b57cec5SDimitry Andric int __kmp_display_affinity = FALSE;
2740b57cec5SDimitry Andric char *__kmp_affinity_format = NULL;
2750b57cec5SDimitry Andric 
2760b57cec5SDimitry Andric kmp_hws_item_t __kmp_hws_socket = {0, 0};
2770b57cec5SDimitry Andric kmp_hws_item_t __kmp_hws_node = {0, 0};
2780b57cec5SDimitry Andric kmp_hws_item_t __kmp_hws_tile = {0, 0};
2790b57cec5SDimitry Andric kmp_hws_item_t __kmp_hws_core = {0, 0};
2800b57cec5SDimitry Andric kmp_hws_item_t __kmp_hws_proc = {0, 0};
2810b57cec5SDimitry Andric int __kmp_hws_requested = 0;
2820b57cec5SDimitry Andric int __kmp_hws_abs_flag = 0; // absolute or per-item number requested
2830b57cec5SDimitry Andric 
2840b57cec5SDimitry Andric kmp_int32 __kmp_default_device = 0;
2850b57cec5SDimitry Andric 
2860b57cec5SDimitry Andric kmp_tasking_mode_t __kmp_tasking_mode = tskm_task_teams;
2870b57cec5SDimitry Andric kmp_int32 __kmp_max_task_priority = 0;
2880b57cec5SDimitry Andric kmp_uint64 __kmp_taskloop_min_tasks = 0;
2890b57cec5SDimitry Andric 
2900b57cec5SDimitry Andric int __kmp_memkind_available = 0;
2910b57cec5SDimitry Andric omp_allocator_handle_t const omp_null_allocator = NULL;
2920b57cec5SDimitry Andric omp_allocator_handle_t const omp_default_mem_alloc =
2930b57cec5SDimitry Andric     (omp_allocator_handle_t const)1;
2940b57cec5SDimitry Andric omp_allocator_handle_t const omp_large_cap_mem_alloc =
2950b57cec5SDimitry Andric     (omp_allocator_handle_t const)2;
2960b57cec5SDimitry Andric omp_allocator_handle_t const omp_const_mem_alloc =
2970b57cec5SDimitry Andric     (omp_allocator_handle_t const)3;
2980b57cec5SDimitry Andric omp_allocator_handle_t const omp_high_bw_mem_alloc =
2990b57cec5SDimitry Andric     (omp_allocator_handle_t const)4;
3000b57cec5SDimitry Andric omp_allocator_handle_t const omp_low_lat_mem_alloc =
3010b57cec5SDimitry Andric     (omp_allocator_handle_t const)5;
3020b57cec5SDimitry Andric omp_allocator_handle_t const omp_cgroup_mem_alloc =
3030b57cec5SDimitry Andric     (omp_allocator_handle_t const)6;
3040b57cec5SDimitry Andric omp_allocator_handle_t const omp_pteam_mem_alloc =
3050b57cec5SDimitry Andric     (omp_allocator_handle_t const)7;
3060b57cec5SDimitry Andric omp_allocator_handle_t const omp_thread_mem_alloc =
3070b57cec5SDimitry Andric     (omp_allocator_handle_t const)8;
3080b57cec5SDimitry Andric omp_allocator_handle_t const kmp_max_mem_alloc =
3090b57cec5SDimitry Andric     (omp_allocator_handle_t const)1024;
3100b57cec5SDimitry Andric omp_allocator_handle_t __kmp_def_allocator = omp_default_mem_alloc;
3110b57cec5SDimitry Andric 
3120b57cec5SDimitry Andric omp_memspace_handle_t const omp_default_mem_space =
3130b57cec5SDimitry Andric     (omp_memspace_handle_t const)0;
3140b57cec5SDimitry Andric omp_memspace_handle_t const omp_large_cap_mem_space =
3150b57cec5SDimitry Andric     (omp_memspace_handle_t const)1;
3160b57cec5SDimitry Andric omp_memspace_handle_t const omp_const_mem_space =
3170b57cec5SDimitry Andric     (omp_memspace_handle_t const)2;
3180b57cec5SDimitry Andric omp_memspace_handle_t const omp_high_bw_mem_space =
3190b57cec5SDimitry Andric     (omp_memspace_handle_t const)3;
3200b57cec5SDimitry Andric omp_memspace_handle_t const omp_low_lat_mem_space =
3210b57cec5SDimitry Andric     (omp_memspace_handle_t const)4;
3220b57cec5SDimitry Andric 
3230b57cec5SDimitry Andric /* This check ensures that the compiler is passing the correct data type for the
3240b57cec5SDimitry Andric    flags formal parameter of the function kmpc_omp_task_alloc(). If the type is
3250b57cec5SDimitry Andric    not a 4-byte type, then give an error message about a non-positive length
3260b57cec5SDimitry Andric    array pointing here.  If that happens, the kmp_tasking_flags_t structure must
3270b57cec5SDimitry Andric    be redefined to have exactly 32 bits. */
3280b57cec5SDimitry Andric KMP_BUILD_ASSERT(sizeof(kmp_tasking_flags_t) == 4);
3290b57cec5SDimitry Andric 
3300b57cec5SDimitry Andric int __kmp_task_stealing_constraint = 1; /* Constrain task stealing by default */
3310b57cec5SDimitry Andric int __kmp_enable_task_throttling = 1;
3320b57cec5SDimitry Andric 
3330b57cec5SDimitry Andric #ifdef DEBUG_SUSPEND
3340b57cec5SDimitry Andric int __kmp_suspend_count = 0;
3350b57cec5SDimitry Andric #endif
3360b57cec5SDimitry Andric 
3370b57cec5SDimitry Andric int __kmp_settings = FALSE;
3380b57cec5SDimitry Andric int __kmp_duplicate_library_ok = 0;
3390b57cec5SDimitry Andric #if USE_ITT_BUILD
3400b57cec5SDimitry Andric int __kmp_forkjoin_frames = 1;
3410b57cec5SDimitry Andric int __kmp_forkjoin_frames_mode = 3;
3420b57cec5SDimitry Andric #endif
3430b57cec5SDimitry Andric PACKED_REDUCTION_METHOD_T __kmp_force_reduction_method =
3440b57cec5SDimitry Andric     reduction_method_not_defined;
3450b57cec5SDimitry Andric int __kmp_determ_red = FALSE;
3460b57cec5SDimitry Andric 
3470b57cec5SDimitry Andric #ifdef KMP_DEBUG
3480b57cec5SDimitry Andric int kmp_a_debug = 0;
3490b57cec5SDimitry Andric int kmp_b_debug = 0;
3500b57cec5SDimitry Andric int kmp_c_debug = 0;
3510b57cec5SDimitry Andric int kmp_d_debug = 0;
3520b57cec5SDimitry Andric int kmp_e_debug = 0;
3530b57cec5SDimitry Andric int kmp_f_debug = 0;
3540b57cec5SDimitry Andric int kmp_diag = 0;
3550b57cec5SDimitry Andric #endif
3560b57cec5SDimitry Andric 
3570b57cec5SDimitry Andric /* For debug information logging using rotating buffer */
3580b57cec5SDimitry Andric int __kmp_debug_buf =
3590b57cec5SDimitry Andric     FALSE; /* TRUE means use buffer, FALSE means print to stderr */
3600b57cec5SDimitry Andric int __kmp_debug_buf_lines =
3610b57cec5SDimitry Andric     KMP_DEBUG_BUF_LINES_INIT; /* Lines of debug stored in buffer */
3620b57cec5SDimitry Andric int __kmp_debug_buf_chars =
3630b57cec5SDimitry Andric     KMP_DEBUG_BUF_CHARS_INIT; /* Characters allowed per line in buffer */
3640b57cec5SDimitry Andric int __kmp_debug_buf_atomic =
3650b57cec5SDimitry Andric     FALSE; /* TRUE means use atomic update of buffer entry pointer */
3660b57cec5SDimitry Andric 
3670b57cec5SDimitry Andric char *__kmp_debug_buffer = NULL; /* Debug buffer itself */
3680b57cec5SDimitry Andric std::atomic<int> __kmp_debug_count =
3690b57cec5SDimitry Andric     ATOMIC_VAR_INIT(0); /* number of lines printed in buffer so far */
3700b57cec5SDimitry Andric int __kmp_debug_buf_warn_chars =
3710b57cec5SDimitry Andric     0; /* Keep track of char increase recommended in warnings */
3720b57cec5SDimitry Andric /* end rotating debug buffer */
3730b57cec5SDimitry Andric 
3740b57cec5SDimitry Andric #ifdef KMP_DEBUG
3750b57cec5SDimitry Andric int __kmp_par_range; /* +1 => only go par for constructs in range */
3760b57cec5SDimitry Andric /* -1 => only go par for constructs outside range */
3770b57cec5SDimitry Andric char __kmp_par_range_routine[KMP_PAR_RANGE_ROUTINE_LEN] = {'\0'};
3780b57cec5SDimitry Andric char __kmp_par_range_filename[KMP_PAR_RANGE_FILENAME_LEN] = {'\0'};
3790b57cec5SDimitry Andric int __kmp_par_range_lb = 0;
3800b57cec5SDimitry Andric int __kmp_par_range_ub = INT_MAX;
3810b57cec5SDimitry Andric #endif /* KMP_DEBUG */
3820b57cec5SDimitry Andric 
3830b57cec5SDimitry Andric /* For printing out dynamic storage map for threads and teams */
3840b57cec5SDimitry Andric int __kmp_storage_map =
3850b57cec5SDimitry Andric     FALSE; /* True means print storage map for threads and teams */
3860b57cec5SDimitry Andric int __kmp_storage_map_verbose =
3870b57cec5SDimitry Andric     FALSE; /* True means storage map includes placement info */
3880b57cec5SDimitry Andric int __kmp_storage_map_verbose_specified = FALSE;
3890b57cec5SDimitry Andric /* Initialize the library data structures when we fork a child process, defaults
3900b57cec5SDimitry Andric  * to TRUE */
3910b57cec5SDimitry Andric int __kmp_need_register_atfork =
3920b57cec5SDimitry Andric     TRUE; /* At initialization, call pthread_atfork to install fork handler */
3930b57cec5SDimitry Andric int __kmp_need_register_atfork_specified = TRUE;
3940b57cec5SDimitry Andric 
3950b57cec5SDimitry Andric int __kmp_env_stksize = FALSE; /* KMP_STACKSIZE specified? */
3960b57cec5SDimitry Andric int __kmp_env_blocktime = FALSE; /* KMP_BLOCKTIME specified? */
3970b57cec5SDimitry Andric int __kmp_env_checks = FALSE; /* KMP_CHECKS specified?    */
3980b57cec5SDimitry Andric int __kmp_env_consistency_check = FALSE; /* KMP_CONSISTENCY_CHECK specified? */
3990b57cec5SDimitry Andric 
4000b57cec5SDimitry Andric // From KMP_USE_YIELD:
4010b57cec5SDimitry Andric // 0 = never yield;
4020b57cec5SDimitry Andric // 1 = always yield (default);
4030b57cec5SDimitry Andric // 2 = yield only if oversubscribed
4040b57cec5SDimitry Andric kmp_int32 __kmp_use_yield = 1;
4050b57cec5SDimitry Andric // This will be 1 if KMP_USE_YIELD environment variable was set explicitly
4060b57cec5SDimitry Andric kmp_int32 __kmp_use_yield_exp_set = 0;
4070b57cec5SDimitry Andric 
4080b57cec5SDimitry Andric kmp_uint32 __kmp_yield_init = KMP_INIT_WAIT;
4090b57cec5SDimitry Andric kmp_uint32 __kmp_yield_next = KMP_NEXT_WAIT;
4100b57cec5SDimitry Andric 
4110b57cec5SDimitry Andric /* ------------------------------------------------------ */
4120b57cec5SDimitry Andric /* STATE mostly syncronized with global lock */
4130b57cec5SDimitry Andric /* data written to rarely by masters, read often by workers */
4140b57cec5SDimitry Andric /* TODO: None of this global padding stuff works consistently because the order
4150b57cec5SDimitry Andric    of declaration is not necessarily correlated to storage order. To fix this,
4160b57cec5SDimitry Andric    all the important globals must be put in a big structure instead. */
4170b57cec5SDimitry Andric KMP_ALIGN_CACHE
4180b57cec5SDimitry Andric kmp_info_t **__kmp_threads = NULL;
4190b57cec5SDimitry Andric kmp_root_t **__kmp_root = NULL;
4200b57cec5SDimitry Andric 
4210b57cec5SDimitry Andric /* data read/written to often by masters */
4220b57cec5SDimitry Andric KMP_ALIGN_CACHE
4230b57cec5SDimitry Andric volatile int __kmp_nth = 0;
4240b57cec5SDimitry Andric volatile int __kmp_all_nth = 0;
4250b57cec5SDimitry Andric volatile kmp_info_t *__kmp_thread_pool = NULL;
4260b57cec5SDimitry Andric volatile kmp_team_t *__kmp_team_pool = NULL;
4270b57cec5SDimitry Andric 
4280b57cec5SDimitry Andric KMP_ALIGN_CACHE
4290b57cec5SDimitry Andric std::atomic<int> __kmp_thread_pool_active_nth = ATOMIC_VAR_INIT(0);
4300b57cec5SDimitry Andric 
4310b57cec5SDimitry Andric /* -------------------------------------------------
4320b57cec5SDimitry Andric  * GLOBAL/ROOT STATE */
4330b57cec5SDimitry Andric KMP_ALIGN_CACHE
434*489b1cf2SDimitry Andric kmp_global_t __kmp_global;
4350b57cec5SDimitry Andric 
4360b57cec5SDimitry Andric /* ----------------------------------------------- */
4370b57cec5SDimitry Andric /* GLOBAL SYNCHRONIZATION LOCKS */
4380b57cec5SDimitry Andric /* TODO verify the need for these locks and if they need to be global */
4390b57cec5SDimitry Andric 
4400b57cec5SDimitry Andric #if KMP_USE_INTERNODE_ALIGNMENT
4410b57cec5SDimitry Andric /* Multinode systems have larger cache line granularity which can cause
4420b57cec5SDimitry Andric  * false sharing if the alignment is not large enough for these locks */
4430b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4440b57cec5SDimitry Andric 
4450b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_initz_lock); /* Control initializations */
4460b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4470b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_forkjoin_lock); /* control fork/join access */
4480b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4490b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_exit_lock); /* exit() is not always thread-safe */
4500b57cec5SDimitry Andric #if KMP_USE_MONITOR
4510b57cec5SDimitry Andric /* control monitor thread creation */
4520b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4530b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_monitor_lock);
4540b57cec5SDimitry Andric #endif
4550b57cec5SDimitry Andric /* used for the hack to allow threadprivate cache and __kmp_threads expansion
4560b57cec5SDimitry Andric    to co-exist */
4570b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4580b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_tp_cached_lock);
4590b57cec5SDimitry Andric 
4600b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4610b57cec5SDimitry Andric KMP_LOCK_INIT(__kmp_global_lock); /* Control OS/global access */
4620b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4630b57cec5SDimitry Andric kmp_queuing_lock_t __kmp_dispatch_lock; /* Control dispatch access  */
4640b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4650b57cec5SDimitry Andric KMP_LOCK_INIT(__kmp_debug_lock); /* Control I/O access for KMP_DEBUG */
4660b57cec5SDimitry Andric #else
4670b57cec5SDimitry Andric KMP_ALIGN_CACHE
4680b57cec5SDimitry Andric 
4690b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_initz_lock); /* Control initializations */
4700b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_forkjoin_lock); /* control fork/join access */
4710b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_exit_lock); /* exit() is not always thread-safe */
4720b57cec5SDimitry Andric #if KMP_USE_MONITOR
4730b57cec5SDimitry Andric /* control monitor thread creation */
4740b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_monitor_lock);
4750b57cec5SDimitry Andric #endif
4760b57cec5SDimitry Andric /* used for the hack to allow threadprivate cache and __kmp_threads expansion
4770b57cec5SDimitry Andric    to co-exist */
4780b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_tp_cached_lock);
4790b57cec5SDimitry Andric 
4800b57cec5SDimitry Andric KMP_ALIGN(128)
4810b57cec5SDimitry Andric KMP_LOCK_INIT(__kmp_global_lock); /* Control OS/global access */
4820b57cec5SDimitry Andric KMP_ALIGN(128)
4830b57cec5SDimitry Andric kmp_queuing_lock_t __kmp_dispatch_lock; /* Control dispatch access  */
4840b57cec5SDimitry Andric KMP_ALIGN(128)
4850b57cec5SDimitry Andric KMP_LOCK_INIT(__kmp_debug_lock); /* Control I/O access for KMP_DEBUG */
4860b57cec5SDimitry Andric #endif
4870b57cec5SDimitry Andric 
4880b57cec5SDimitry Andric /* ----------------------------------------------- */
4890b57cec5SDimitry Andric 
4900b57cec5SDimitry Andric #if KMP_HANDLE_SIGNALS
4910b57cec5SDimitry Andric /* Signal handling is disabled by default, because it confuses users: In case of
4920b57cec5SDimitry Andric    sigsegv (or other trouble) in user code signal handler catches the signal,
4930b57cec5SDimitry Andric    which then "appears" in the monitor thread (when the monitor executes raise()
4940b57cec5SDimitry Andric    function). Users see signal in the monitor thread and blame OpenMP RTL.
4950b57cec5SDimitry Andric 
4960b57cec5SDimitry Andric    Grant said signal handling required on some older OSes (Irix?) supported by
4970b57cec5SDimitry Andric    KAI, because bad applications hung but not aborted. Currently it is not a
4980b57cec5SDimitry Andric    problem for Linux* OS, OS X* and Windows* OS.
4990b57cec5SDimitry Andric 
5000b57cec5SDimitry Andric    Grant: Found new hangs for EL4, EL5, and a Fedora Core machine.  So I'm
5010b57cec5SDimitry Andric    putting the default back for now to see if that fixes hangs on those
5020b57cec5SDimitry Andric    machines.
5030b57cec5SDimitry Andric 
5040b57cec5SDimitry Andric    2010-04013 Lev: It was a bug in Fortran RTL. Fortran RTL prints a kind of
5050b57cec5SDimitry Andric    stack backtrace when program is aborting, but the code is not signal-safe.
5060b57cec5SDimitry Andric    When multiple signals raised at the same time (which occurs in dynamic
5070b57cec5SDimitry Andric    negative tests because all the worker threads detects the same error),
5080b57cec5SDimitry Andric    Fortran RTL may hang. The bug finally fixed in Fortran RTL library provided
5090b57cec5SDimitry Andric    by Steve R., and will be available soon. */
5100b57cec5SDimitry Andric int __kmp_handle_signals = FALSE;
5110b57cec5SDimitry Andric #endif
5120b57cec5SDimitry Andric 
5130b57cec5SDimitry Andric #ifdef DEBUG_SUSPEND
5140b57cec5SDimitry Andric int get_suspend_count_(void) {
5150b57cec5SDimitry Andric   int count = __kmp_suspend_count;
5160b57cec5SDimitry Andric   __kmp_suspend_count = 0;
5170b57cec5SDimitry Andric   return count;
5180b57cec5SDimitry Andric }
5190b57cec5SDimitry Andric void set_suspend_count_(int *value) { __kmp_suspend_count = *value; }
5200b57cec5SDimitry Andric #endif
5210b57cec5SDimitry Andric 
5220b57cec5SDimitry Andric // Symbols for MS mutual detection.
5230b57cec5SDimitry Andric int _You_must_link_with_exactly_one_OpenMP_library = 1;
5240b57cec5SDimitry Andric int _You_must_link_with_Intel_OpenMP_library = 1;
5250b57cec5SDimitry Andric #if KMP_OS_WINDOWS && (KMP_VERSION_MAJOR > 4)
5260b57cec5SDimitry Andric int _You_must_link_with_Microsoft_OpenMP_library = 1;
5270b57cec5SDimitry Andric #endif
5280b57cec5SDimitry Andric 
5290b57cec5SDimitry Andric kmp_target_offload_kind_t __kmp_target_offload = tgt_default;
5300b57cec5SDimitry Andric 
5310b57cec5SDimitry Andric // OMP Pause Resources
5320b57cec5SDimitry Andric kmp_pause_status_t __kmp_pause_status = kmp_not_paused;
5330b57cec5SDimitry Andric 
5340b57cec5SDimitry Andric // end of file //
535