xref: /freebsd/contrib/llvm-project/openmp/runtime/src/kmp_global.cpp (revision 06c3fb2749bda94cb5201f81ffdb8fa6c3161b2e)
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;
47fcaf7f86SDimitry Andric volatile int __kmp_need_register_serial = TRUE;
480b57cec5SDimitry Andric volatile int __kmp_init_middle = FALSE;
490b57cec5SDimitry Andric volatile int __kmp_init_parallel = FALSE;
50e8d8bef9SDimitry Andric volatile int __kmp_init_hidden_helper = FALSE;
51e8d8bef9SDimitry Andric volatile int __kmp_init_hidden_helper_threads = FALSE;
52e8d8bef9SDimitry Andric volatile int __kmp_hidden_helper_team_done = FALSE;
530b57cec5SDimitry Andric #if KMP_USE_MONITOR
540b57cec5SDimitry Andric volatile int __kmp_init_monitor =
550b57cec5SDimitry Andric     0; /* 1 - launched, 2 - actually started (Windows* OS only) */
560b57cec5SDimitry Andric #endif
570b57cec5SDimitry Andric volatile int __kmp_init_user_locks = FALSE;
580b57cec5SDimitry Andric 
590b57cec5SDimitry Andric /* list of address of allocated caches for commons */
600b57cec5SDimitry Andric kmp_cached_addr_t *__kmp_threadpriv_cache_list = NULL;
610b57cec5SDimitry Andric 
620b57cec5SDimitry Andric int __kmp_init_counter = 0;
630b57cec5SDimitry Andric int __kmp_root_counter = 0;
640b57cec5SDimitry Andric int __kmp_version = 0;
650b57cec5SDimitry Andric 
66*06c3fb27SDimitry Andric std::atomic<kmp_int32> __kmp_team_counter = 0;
67*06c3fb27SDimitry Andric std::atomic<kmp_int32> __kmp_task_counter = 0;
680b57cec5SDimitry Andric 
690b57cec5SDimitry Andric size_t __kmp_stksize = KMP_DEFAULT_STKSIZE;
700b57cec5SDimitry Andric #if KMP_USE_MONITOR
710b57cec5SDimitry Andric size_t __kmp_monitor_stksize = 0; // auto adjust
720b57cec5SDimitry Andric #endif
730b57cec5SDimitry Andric size_t __kmp_stkoffset = KMP_DEFAULT_STKOFFSET;
740b57cec5SDimitry Andric int __kmp_stkpadding = KMP_MIN_STKPADDING;
750b57cec5SDimitry Andric 
760b57cec5SDimitry Andric size_t __kmp_malloc_pool_incr = KMP_DEFAULT_MALLOC_POOL_INCR;
770b57cec5SDimitry Andric 
780b57cec5SDimitry Andric // Barrier method defaults, settings, and strings.
790b57cec5SDimitry Andric // branch factor = 2^branch_bits (only relevant for tree & hyper barrier types)
800b57cec5SDimitry Andric kmp_uint32 __kmp_barrier_gather_bb_dflt = 2;
810b57cec5SDimitry Andric /* branch_factor = 4 */ /* hyper2: C78980 */
820b57cec5SDimitry Andric kmp_uint32 __kmp_barrier_release_bb_dflt = 2;
830b57cec5SDimitry Andric /* branch_factor = 4 */ /* hyper2: C78980 */
840b57cec5SDimitry Andric 
850b57cec5SDimitry Andric kmp_bar_pat_e __kmp_barrier_gather_pat_dflt = bp_hyper_bar;
860b57cec5SDimitry Andric /* hyper2: C78980 */
870b57cec5SDimitry Andric kmp_bar_pat_e __kmp_barrier_release_pat_dflt = bp_hyper_bar;
880b57cec5SDimitry Andric /* hyper2: C78980 */
890b57cec5SDimitry Andric 
900b57cec5SDimitry Andric kmp_uint32 __kmp_barrier_gather_branch_bits[bs_last_barrier] = {0};
910b57cec5SDimitry Andric kmp_uint32 __kmp_barrier_release_branch_bits[bs_last_barrier] = {0};
920b57cec5SDimitry Andric kmp_bar_pat_e __kmp_barrier_gather_pattern[bs_last_barrier] = {bp_linear_bar};
930b57cec5SDimitry Andric kmp_bar_pat_e __kmp_barrier_release_pattern[bs_last_barrier] = {bp_linear_bar};
940b57cec5SDimitry Andric char const *__kmp_barrier_branch_bit_env_name[bs_last_barrier] = {
950b57cec5SDimitry Andric     "KMP_PLAIN_BARRIER", "KMP_FORKJOIN_BARRIER"
960b57cec5SDimitry Andric #if KMP_FAST_REDUCTION_BARRIER
970b57cec5SDimitry Andric     ,
980b57cec5SDimitry Andric     "KMP_REDUCTION_BARRIER"
990b57cec5SDimitry Andric #endif // KMP_FAST_REDUCTION_BARRIER
1000b57cec5SDimitry Andric };
1010b57cec5SDimitry Andric char const *__kmp_barrier_pattern_env_name[bs_last_barrier] = {
1020b57cec5SDimitry Andric     "KMP_PLAIN_BARRIER_PATTERN", "KMP_FORKJOIN_BARRIER_PATTERN"
1030b57cec5SDimitry Andric #if KMP_FAST_REDUCTION_BARRIER
1040b57cec5SDimitry Andric     ,
1050b57cec5SDimitry Andric     "KMP_REDUCTION_BARRIER_PATTERN"
1060b57cec5SDimitry Andric #endif // KMP_FAST_REDUCTION_BARRIER
1070b57cec5SDimitry Andric };
1080b57cec5SDimitry Andric char const *__kmp_barrier_type_name[bs_last_barrier] = {"plain", "forkjoin"
1090b57cec5SDimitry Andric #if KMP_FAST_REDUCTION_BARRIER
1100b57cec5SDimitry Andric                                                         ,
1110b57cec5SDimitry Andric                                                         "reduction"
1120b57cec5SDimitry Andric #endif // KMP_FAST_REDUCTION_BARRIER
1130b57cec5SDimitry Andric };
114349cc55cSDimitry Andric char const *__kmp_barrier_pattern_name[bp_last_bar] = {
115349cc55cSDimitry Andric     "linear", "tree", "hyper", "hierarchical", "dist"};
1160b57cec5SDimitry Andric 
1170b57cec5SDimitry Andric int __kmp_allThreadsSpecified = 0;
1180b57cec5SDimitry Andric size_t __kmp_align_alloc = CACHE_LINE;
1190b57cec5SDimitry Andric 
1200b57cec5SDimitry Andric int __kmp_generate_warnings = kmp_warnings_low;
1210b57cec5SDimitry Andric int __kmp_reserve_warn = 0;
1220b57cec5SDimitry Andric int __kmp_xproc = 0;
1230b57cec5SDimitry Andric int __kmp_avail_proc = 0;
1240b57cec5SDimitry Andric size_t __kmp_sys_min_stksize = KMP_MIN_STKSIZE;
1250b57cec5SDimitry Andric int __kmp_sys_max_nth = KMP_MAX_NTH;
1260b57cec5SDimitry Andric int __kmp_max_nth = 0;
1270b57cec5SDimitry Andric int __kmp_cg_max_nth = 0;
1280b57cec5SDimitry Andric int __kmp_teams_max_nth = 0;
1290b57cec5SDimitry Andric int __kmp_threads_capacity = 0;
1300b57cec5SDimitry Andric int __kmp_dflt_team_nth = 0;
1310b57cec5SDimitry Andric int __kmp_dflt_team_nth_ub = 0;
1320b57cec5SDimitry Andric int __kmp_tp_capacity = 0;
1330b57cec5SDimitry Andric int __kmp_tp_cached = 0;
1340b57cec5SDimitry Andric int __kmp_dispatch_num_buffers = KMP_DFLT_DISP_NUM_BUFF;
1350b57cec5SDimitry Andric int __kmp_dflt_max_active_levels = 1; // Nesting off by default
1360b57cec5SDimitry Andric bool __kmp_dflt_max_active_levels_set = false; // Don't override set value
1370b57cec5SDimitry Andric #if KMP_NESTED_HOT_TEAMS
1380b57cec5SDimitry Andric int __kmp_hot_teams_mode = 0; /* 0 - free extra threads when reduced */
1390b57cec5SDimitry Andric /* 1 - keep extra threads when reduced */
1400b57cec5SDimitry Andric int __kmp_hot_teams_max_level = 1; /* nesting level of hot teams */
1410b57cec5SDimitry Andric #endif
1420b57cec5SDimitry Andric enum library_type __kmp_library = library_none;
1430b57cec5SDimitry Andric enum sched_type __kmp_sched =
1440b57cec5SDimitry Andric     kmp_sch_default; /* scheduling method for runtime scheduling */
1450b57cec5SDimitry Andric enum sched_type __kmp_static =
1460b57cec5SDimitry Andric     kmp_sch_static_greedy; /* default static scheduling method */
1470b57cec5SDimitry Andric enum sched_type __kmp_guided =
1480b57cec5SDimitry Andric     kmp_sch_guided_iterative_chunked; /* default guided scheduling method */
1490b57cec5SDimitry Andric enum sched_type __kmp_auto =
1500b57cec5SDimitry Andric     kmp_sch_guided_analytical_chunked; /* default auto scheduling method */
1510b57cec5SDimitry Andric #if KMP_USE_HIER_SCHED
1520b57cec5SDimitry Andric int __kmp_dispatch_hand_threading = 0;
1530b57cec5SDimitry Andric int __kmp_hier_max_units[kmp_hier_layer_e::LAYER_LAST + 1];
1540b57cec5SDimitry Andric int __kmp_hier_threads_per[kmp_hier_layer_e::LAYER_LAST + 1];
1550b57cec5SDimitry Andric kmp_hier_sched_env_t __kmp_hier_scheds = {0, 0, NULL, NULL, NULL};
1560b57cec5SDimitry Andric #endif
1570b57cec5SDimitry Andric int __kmp_dflt_blocktime = KMP_DEFAULT_BLOCKTIME;
15881ad6265SDimitry Andric bool __kmp_wpolicy_passive = false;
1590b57cec5SDimitry Andric #if KMP_USE_MONITOR
1600b57cec5SDimitry Andric int __kmp_monitor_wakeups = KMP_MIN_MONITOR_WAKEUPS;
1610b57cec5SDimitry Andric int __kmp_bt_intervals = KMP_INTERVALS_FROM_BLOCKTIME(KMP_DEFAULT_BLOCKTIME,
1620b57cec5SDimitry Andric                                                       KMP_MIN_MONITOR_WAKEUPS);
1630b57cec5SDimitry Andric #endif
1640b57cec5SDimitry Andric #ifdef KMP_ADJUST_BLOCKTIME
1650b57cec5SDimitry Andric int __kmp_zero_bt = FALSE;
1660b57cec5SDimitry Andric #endif /* KMP_ADJUST_BLOCKTIME */
1670b57cec5SDimitry Andric #ifdef KMP_DFLT_NTH_CORES
1680b57cec5SDimitry Andric int __kmp_ncores = 0;
1690b57cec5SDimitry Andric #endif
1700b57cec5SDimitry Andric int __kmp_chunk = 0;
171fe6060f1SDimitry Andric int __kmp_force_monotonic = 0;
1720b57cec5SDimitry Andric int __kmp_abort_delay = 0;
1730b57cec5SDimitry Andric #if KMP_OS_LINUX && defined(KMP_TDATA_GTID)
1740b57cec5SDimitry Andric int __kmp_gtid_mode = 3; /* use __declspec(thread) TLS to store gtid */
1750b57cec5SDimitry Andric int __kmp_adjust_gtid_mode = FALSE;
1760b57cec5SDimitry Andric #elif KMP_OS_WINDOWS
1770b57cec5SDimitry Andric int __kmp_gtid_mode = 2; /* use TLS functions to store gtid */
1780b57cec5SDimitry Andric int __kmp_adjust_gtid_mode = FALSE;
1790b57cec5SDimitry Andric #else
1800b57cec5SDimitry Andric int __kmp_gtid_mode = 0; /* select method to get gtid based on #threads */
1810b57cec5SDimitry Andric int __kmp_adjust_gtid_mode = TRUE;
1820b57cec5SDimitry Andric #endif /* KMP_OS_LINUX && defined(KMP_TDATA_GTID) */
1830b57cec5SDimitry Andric #ifdef KMP_TDATA_GTID
1840b57cec5SDimitry Andric KMP_THREAD_LOCAL int __kmp_gtid = KMP_GTID_DNE;
1850b57cec5SDimitry Andric #endif /* KMP_TDATA_GTID */
1860b57cec5SDimitry Andric int __kmp_tls_gtid_min = INT_MAX;
1870b57cec5SDimitry Andric int __kmp_foreign_tp = TRUE;
1880b57cec5SDimitry Andric #if KMP_ARCH_X86 || KMP_ARCH_X86_64
1890b57cec5SDimitry Andric int __kmp_inherit_fp_control = TRUE;
1900b57cec5SDimitry Andric kmp_int16 __kmp_init_x87_fpu_control_word = 0;
1910b57cec5SDimitry Andric kmp_uint32 __kmp_init_mxcsr = 0;
1920b57cec5SDimitry Andric #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */
1930b57cec5SDimitry Andric 
1940b57cec5SDimitry Andric #ifdef USE_LOAD_BALANCE
1950b57cec5SDimitry Andric double __kmp_load_balance_interval = 1.0;
1960b57cec5SDimitry Andric #endif /* USE_LOAD_BALANCE */
1970b57cec5SDimitry Andric 
1980b57cec5SDimitry Andric kmp_nested_nthreads_t __kmp_nested_nth = {NULL, 0, 0};
1990b57cec5SDimitry Andric 
2000b57cec5SDimitry Andric #if KMP_USE_ADAPTIVE_LOCKS
2010b57cec5SDimitry Andric 
2020b57cec5SDimitry Andric kmp_adaptive_backoff_params_t __kmp_adaptive_backoff_params = {
2030b57cec5SDimitry Andric     1, 1024}; // TODO: tune it!
2040b57cec5SDimitry Andric 
2050b57cec5SDimitry Andric #if KMP_DEBUG_ADAPTIVE_LOCKS
2060b57cec5SDimitry Andric const char *__kmp_speculative_statsfile = "-";
2070b57cec5SDimitry Andric #endif
2080b57cec5SDimitry Andric 
2090b57cec5SDimitry Andric #endif // KMP_USE_ADAPTIVE_LOCKS
2100b57cec5SDimitry Andric 
2110b57cec5SDimitry Andric int __kmp_display_env = FALSE;
2120b57cec5SDimitry Andric int __kmp_display_env_verbose = FALSE;
2130b57cec5SDimitry Andric int __kmp_omp_cancellation = FALSE;
214fe6060f1SDimitry Andric int __kmp_nteams = 0;
215fe6060f1SDimitry Andric int __kmp_teams_thread_limit = 0;
2160b57cec5SDimitry Andric 
217e8d8bef9SDimitry Andric #if KMP_HAVE_MWAIT || KMP_HAVE_UMWAIT
218e8d8bef9SDimitry Andric int __kmp_user_level_mwait = FALSE;
219e8d8bef9SDimitry Andric int __kmp_umwait_enabled = FALSE;
220e8d8bef9SDimitry Andric int __kmp_mwait_enabled = FALSE;
221e8d8bef9SDimitry Andric int __kmp_mwait_hints = 0;
222e8d8bef9SDimitry Andric #endif
223e8d8bef9SDimitry Andric 
22404eeddc0SDimitry Andric #if KMP_HAVE_UMWAIT
22504eeddc0SDimitry Andric int __kmp_waitpkg_enabled = 0;
22604eeddc0SDimitry Andric int __kmp_tpause_state = 0;
22704eeddc0SDimitry Andric int __kmp_tpause_hint = 1;
22804eeddc0SDimitry Andric int __kmp_tpause_enabled = 0;
22904eeddc0SDimitry Andric #endif
23004eeddc0SDimitry Andric 
2310b57cec5SDimitry Andric /* map OMP 3.0 schedule types with our internal schedule types */
2320b57cec5SDimitry Andric enum sched_type __kmp_sch_map[kmp_sched_upper - kmp_sched_lower_ext +
2330b57cec5SDimitry Andric                               kmp_sched_upper_std - kmp_sched_lower - 2] = {
2340b57cec5SDimitry Andric     kmp_sch_static_chunked, // ==> kmp_sched_static            = 1
2350b57cec5SDimitry Andric     kmp_sch_dynamic_chunked, // ==> kmp_sched_dynamic           = 2
2360b57cec5SDimitry Andric     kmp_sch_guided_chunked, // ==> kmp_sched_guided            = 3
2370b57cec5SDimitry Andric     kmp_sch_auto, // ==> kmp_sched_auto              = 4
2380b57cec5SDimitry Andric     kmp_sch_trapezoidal // ==> kmp_sched_trapezoidal       = 101
2390b57cec5SDimitry Andric     // will likely not be used, introduced here just to debug the code
2400b57cec5SDimitry Andric     // of public intel extension schedules
2410b57cec5SDimitry Andric };
2420b57cec5SDimitry Andric 
2430b57cec5SDimitry Andric #if KMP_OS_LINUX
2440b57cec5SDimitry Andric enum clock_function_type __kmp_clock_function;
2450b57cec5SDimitry Andric int __kmp_clock_function_param;
2460b57cec5SDimitry Andric #endif /* KMP_OS_LINUX */
2470b57cec5SDimitry Andric 
2480b57cec5SDimitry Andric #if KMP_MIC_SUPPORTED
2490b57cec5SDimitry Andric enum mic_type __kmp_mic_type = non_mic;
2500b57cec5SDimitry Andric #endif
2510b57cec5SDimitry Andric 
2520b57cec5SDimitry Andric #if KMP_AFFINITY_SUPPORTED
2530b57cec5SDimitry Andric 
2540b57cec5SDimitry Andric KMPAffinity *__kmp_affinity_dispatch = NULL;
2550b57cec5SDimitry Andric 
2560b57cec5SDimitry Andric #if KMP_USE_HWLOC
2570b57cec5SDimitry Andric int __kmp_hwloc_error = FALSE;
2580b57cec5SDimitry Andric hwloc_topology_t __kmp_hwloc_topology = NULL;
2590b57cec5SDimitry Andric #endif
2600b57cec5SDimitry Andric 
2610b57cec5SDimitry Andric #if KMP_OS_WINDOWS
2620b57cec5SDimitry Andric #if KMP_GROUP_AFFINITY
2630b57cec5SDimitry Andric int __kmp_num_proc_groups = 1;
2640b57cec5SDimitry Andric #endif /* KMP_GROUP_AFFINITY */
2650b57cec5SDimitry Andric kmp_GetActiveProcessorCount_t __kmp_GetActiveProcessorCount = NULL;
2660b57cec5SDimitry Andric kmp_GetActiveProcessorGroupCount_t __kmp_GetActiveProcessorGroupCount = NULL;
2670b57cec5SDimitry Andric kmp_GetThreadGroupAffinity_t __kmp_GetThreadGroupAffinity = NULL;
2680b57cec5SDimitry Andric kmp_SetThreadGroupAffinity_t __kmp_SetThreadGroupAffinity = NULL;
2690b57cec5SDimitry Andric #endif /* KMP_OS_WINDOWS */
2700b57cec5SDimitry Andric 
2710b57cec5SDimitry Andric size_t __kmp_affin_mask_size = 0;
2720b57cec5SDimitry Andric enum affinity_top_method __kmp_affinity_top_method =
2730b57cec5SDimitry Andric     affinity_top_method_default;
274bdd1243dSDimitry Andric 
275bdd1243dSDimitry Andric // Regular thread affinity settings from KMP_AFFINITY
276bdd1243dSDimitry Andric kmp_affinity_t __kmp_affinity = KMP_AFFINITY_INIT("KMP_AFFINITY");
277bdd1243dSDimitry Andric // Hidden helper thread affinity settings from KMP_HIDDEN_HELPER_AFFINITY
278bdd1243dSDimitry Andric kmp_affinity_t __kmp_hh_affinity =
279bdd1243dSDimitry Andric     KMP_AFFINITY_INIT("KMP_HIDDEN_HELPER_AFFINITY");
280bdd1243dSDimitry Andric kmp_affinity_t *__kmp_affinities[] = {&__kmp_affinity, &__kmp_hh_affinity};
2810b57cec5SDimitry Andric 
2820b57cec5SDimitry Andric char *__kmp_cpuinfo_file = NULL;
2830b57cec5SDimitry Andric 
2840b57cec5SDimitry Andric #endif /* KMP_AFFINITY_SUPPORTED */
2850b57cec5SDimitry Andric 
2860b57cec5SDimitry Andric kmp_nested_proc_bind_t __kmp_nested_proc_bind = {NULL, 0, 0};
287349cc55cSDimitry Andric kmp_proc_bind_t __kmp_teams_proc_bind = proc_bind_spread;
2880b57cec5SDimitry Andric int __kmp_affinity_num_places = 0;
2890b57cec5SDimitry Andric int __kmp_display_affinity = FALSE;
2900b57cec5SDimitry Andric char *__kmp_affinity_format = NULL;
2910b57cec5SDimitry Andric 
2920b57cec5SDimitry Andric kmp_int32 __kmp_default_device = 0;
2930b57cec5SDimitry Andric 
2940b57cec5SDimitry Andric kmp_tasking_mode_t __kmp_tasking_mode = tskm_task_teams;
2950b57cec5SDimitry Andric kmp_int32 __kmp_max_task_priority = 0;
2960b57cec5SDimitry Andric kmp_uint64 __kmp_taskloop_min_tasks = 0;
2970b57cec5SDimitry Andric 
2980b57cec5SDimitry Andric int __kmp_memkind_available = 0;
2990b57cec5SDimitry Andric omp_allocator_handle_t const omp_null_allocator = NULL;
3000b57cec5SDimitry Andric omp_allocator_handle_t const omp_default_mem_alloc =
3010b57cec5SDimitry Andric     (omp_allocator_handle_t const)1;
3020b57cec5SDimitry Andric omp_allocator_handle_t const omp_large_cap_mem_alloc =
3030b57cec5SDimitry Andric     (omp_allocator_handle_t const)2;
3040b57cec5SDimitry Andric omp_allocator_handle_t const omp_const_mem_alloc =
3050b57cec5SDimitry Andric     (omp_allocator_handle_t const)3;
3060b57cec5SDimitry Andric omp_allocator_handle_t const omp_high_bw_mem_alloc =
3070b57cec5SDimitry Andric     (omp_allocator_handle_t const)4;
3080b57cec5SDimitry Andric omp_allocator_handle_t const omp_low_lat_mem_alloc =
3090b57cec5SDimitry Andric     (omp_allocator_handle_t const)5;
3100b57cec5SDimitry Andric omp_allocator_handle_t const omp_cgroup_mem_alloc =
3110b57cec5SDimitry Andric     (omp_allocator_handle_t const)6;
3120b57cec5SDimitry Andric omp_allocator_handle_t const omp_pteam_mem_alloc =
3130b57cec5SDimitry Andric     (omp_allocator_handle_t const)7;
3140b57cec5SDimitry Andric omp_allocator_handle_t const omp_thread_mem_alloc =
3150b57cec5SDimitry Andric     (omp_allocator_handle_t const)8;
316fe6060f1SDimitry Andric omp_allocator_handle_t const llvm_omp_target_host_mem_alloc =
317fe6060f1SDimitry Andric     (omp_allocator_handle_t const)100;
318fe6060f1SDimitry Andric omp_allocator_handle_t const llvm_omp_target_shared_mem_alloc =
319fe6060f1SDimitry Andric     (omp_allocator_handle_t const)101;
320fe6060f1SDimitry Andric omp_allocator_handle_t const llvm_omp_target_device_mem_alloc =
321fe6060f1SDimitry Andric     (omp_allocator_handle_t const)102;
3220b57cec5SDimitry Andric omp_allocator_handle_t const kmp_max_mem_alloc =
3230b57cec5SDimitry Andric     (omp_allocator_handle_t const)1024;
3240b57cec5SDimitry Andric omp_allocator_handle_t __kmp_def_allocator = omp_default_mem_alloc;
3250b57cec5SDimitry Andric 
3260b57cec5SDimitry Andric omp_memspace_handle_t const omp_default_mem_space =
3270b57cec5SDimitry Andric     (omp_memspace_handle_t const)0;
3280b57cec5SDimitry Andric omp_memspace_handle_t const omp_large_cap_mem_space =
3290b57cec5SDimitry Andric     (omp_memspace_handle_t const)1;
3300b57cec5SDimitry Andric omp_memspace_handle_t const omp_const_mem_space =
3310b57cec5SDimitry Andric     (omp_memspace_handle_t const)2;
3320b57cec5SDimitry Andric omp_memspace_handle_t const omp_high_bw_mem_space =
3330b57cec5SDimitry Andric     (omp_memspace_handle_t const)3;
3340b57cec5SDimitry Andric omp_memspace_handle_t const omp_low_lat_mem_space =
3350b57cec5SDimitry Andric     (omp_memspace_handle_t const)4;
336fe6060f1SDimitry Andric omp_memspace_handle_t const llvm_omp_target_host_mem_space =
337fe6060f1SDimitry Andric     (omp_memspace_handle_t const)100;
338fe6060f1SDimitry Andric omp_memspace_handle_t const llvm_omp_target_shared_mem_space =
339fe6060f1SDimitry Andric     (omp_memspace_handle_t const)101;
340fe6060f1SDimitry Andric omp_memspace_handle_t const llvm_omp_target_device_mem_space =
341fe6060f1SDimitry Andric     (omp_memspace_handle_t const)102;
3420b57cec5SDimitry Andric 
3430b57cec5SDimitry Andric /* This check ensures that the compiler is passing the correct data type for the
3440b57cec5SDimitry Andric    flags formal parameter of the function kmpc_omp_task_alloc(). If the type is
3450b57cec5SDimitry Andric    not a 4-byte type, then give an error message about a non-positive length
3460b57cec5SDimitry Andric    array pointing here.  If that happens, the kmp_tasking_flags_t structure must
3470b57cec5SDimitry Andric    be redefined to have exactly 32 bits. */
3480b57cec5SDimitry Andric KMP_BUILD_ASSERT(sizeof(kmp_tasking_flags_t) == 4);
3490b57cec5SDimitry Andric 
3500b57cec5SDimitry Andric int __kmp_task_stealing_constraint = 1; /* Constrain task stealing by default */
3510b57cec5SDimitry Andric int __kmp_enable_task_throttling = 1;
3520b57cec5SDimitry Andric 
3530b57cec5SDimitry Andric #ifdef DEBUG_SUSPEND
3540b57cec5SDimitry Andric int __kmp_suspend_count = 0;
3550b57cec5SDimitry Andric #endif
3560b57cec5SDimitry Andric 
3570b57cec5SDimitry Andric int __kmp_settings = FALSE;
3580b57cec5SDimitry Andric int __kmp_duplicate_library_ok = 0;
3590b57cec5SDimitry Andric #if USE_ITT_BUILD
3600b57cec5SDimitry Andric int __kmp_forkjoin_frames = 1;
3610b57cec5SDimitry Andric int __kmp_forkjoin_frames_mode = 3;
3620b57cec5SDimitry Andric #endif
3630b57cec5SDimitry Andric PACKED_REDUCTION_METHOD_T __kmp_force_reduction_method =
3640b57cec5SDimitry Andric     reduction_method_not_defined;
3650b57cec5SDimitry Andric int __kmp_determ_red = FALSE;
3660b57cec5SDimitry Andric 
3670b57cec5SDimitry Andric #ifdef KMP_DEBUG
3680b57cec5SDimitry Andric int kmp_a_debug = 0;
3690b57cec5SDimitry Andric int kmp_b_debug = 0;
3700b57cec5SDimitry Andric int kmp_c_debug = 0;
3710b57cec5SDimitry Andric int kmp_d_debug = 0;
3720b57cec5SDimitry Andric int kmp_e_debug = 0;
3730b57cec5SDimitry Andric int kmp_f_debug = 0;
3740b57cec5SDimitry Andric int kmp_diag = 0;
3750b57cec5SDimitry Andric #endif
3760b57cec5SDimitry Andric 
3770b57cec5SDimitry Andric /* For debug information logging using rotating buffer */
3780b57cec5SDimitry Andric int __kmp_debug_buf =
3790b57cec5SDimitry Andric     FALSE; /* TRUE means use buffer, FALSE means print to stderr */
3800b57cec5SDimitry Andric int __kmp_debug_buf_lines =
3810b57cec5SDimitry Andric     KMP_DEBUG_BUF_LINES_INIT; /* Lines of debug stored in buffer */
3820b57cec5SDimitry Andric int __kmp_debug_buf_chars =
3830b57cec5SDimitry Andric     KMP_DEBUG_BUF_CHARS_INIT; /* Characters allowed per line in buffer */
3840b57cec5SDimitry Andric int __kmp_debug_buf_atomic =
3850b57cec5SDimitry Andric     FALSE; /* TRUE means use atomic update of buffer entry pointer */
3860b57cec5SDimitry Andric 
3870b57cec5SDimitry Andric char *__kmp_debug_buffer = NULL; /* Debug buffer itself */
3880b57cec5SDimitry Andric std::atomic<int> __kmp_debug_count =
389*06c3fb27SDimitry Andric     0; /* number of lines printed in buffer so far */
3900b57cec5SDimitry Andric int __kmp_debug_buf_warn_chars =
3910b57cec5SDimitry Andric     0; /* Keep track of char increase recommended in warnings */
3920b57cec5SDimitry Andric /* end rotating debug buffer */
3930b57cec5SDimitry Andric 
3940b57cec5SDimitry Andric #ifdef KMP_DEBUG
3950b57cec5SDimitry Andric int __kmp_par_range; /* +1 => only go par for constructs in range */
3960b57cec5SDimitry Andric /* -1 => only go par for constructs outside range */
3970b57cec5SDimitry Andric char __kmp_par_range_routine[KMP_PAR_RANGE_ROUTINE_LEN] = {'\0'};
3980b57cec5SDimitry Andric char __kmp_par_range_filename[KMP_PAR_RANGE_FILENAME_LEN] = {'\0'};
3990b57cec5SDimitry Andric int __kmp_par_range_lb = 0;
4000b57cec5SDimitry Andric int __kmp_par_range_ub = INT_MAX;
4010b57cec5SDimitry Andric #endif /* KMP_DEBUG */
4020b57cec5SDimitry Andric 
4030b57cec5SDimitry Andric /* For printing out dynamic storage map for threads and teams */
4040b57cec5SDimitry Andric int __kmp_storage_map =
4050b57cec5SDimitry Andric     FALSE; /* True means print storage map for threads and teams */
4060b57cec5SDimitry Andric int __kmp_storage_map_verbose =
4070b57cec5SDimitry Andric     FALSE; /* True means storage map includes placement info */
4080b57cec5SDimitry Andric int __kmp_storage_map_verbose_specified = FALSE;
4090b57cec5SDimitry Andric /* Initialize the library data structures when we fork a child process, defaults
4100b57cec5SDimitry Andric  * to TRUE */
4110b57cec5SDimitry Andric int __kmp_need_register_atfork =
4120b57cec5SDimitry Andric     TRUE; /* At initialization, call pthread_atfork to install fork handler */
4130b57cec5SDimitry Andric int __kmp_need_register_atfork_specified = TRUE;
4140b57cec5SDimitry Andric 
4150b57cec5SDimitry Andric int __kmp_env_stksize = FALSE; /* KMP_STACKSIZE specified? */
4160b57cec5SDimitry Andric int __kmp_env_blocktime = FALSE; /* KMP_BLOCKTIME specified? */
4170b57cec5SDimitry Andric int __kmp_env_checks = FALSE; /* KMP_CHECKS specified?    */
4180b57cec5SDimitry Andric int __kmp_env_consistency_check = FALSE; /* KMP_CONSISTENCY_CHECK specified? */
4190b57cec5SDimitry Andric 
4200b57cec5SDimitry Andric // From KMP_USE_YIELD:
4210b57cec5SDimitry Andric // 0 = never yield;
4220b57cec5SDimitry Andric // 1 = always yield (default);
4230b57cec5SDimitry Andric // 2 = yield only if oversubscribed
42481ad6265SDimitry Andric #if KMP_OS_DARWIN && KMP_ARCH_AARCH64
42581ad6265SDimitry Andric // Set to 0 for environments where yield is slower
42681ad6265SDimitry Andric kmp_int32 __kmp_use_yield = 0;
42781ad6265SDimitry Andric #else
4280b57cec5SDimitry Andric kmp_int32 __kmp_use_yield = 1;
42981ad6265SDimitry Andric #endif
43081ad6265SDimitry Andric 
4310b57cec5SDimitry Andric // This will be 1 if KMP_USE_YIELD environment variable was set explicitly
4320b57cec5SDimitry Andric kmp_int32 __kmp_use_yield_exp_set = 0;
4330b57cec5SDimitry Andric 
4340b57cec5SDimitry Andric kmp_uint32 __kmp_yield_init = KMP_INIT_WAIT;
4350b57cec5SDimitry Andric kmp_uint32 __kmp_yield_next = KMP_NEXT_WAIT;
43604eeddc0SDimitry Andric kmp_uint64 __kmp_pause_init = 1; // for tpause
4370b57cec5SDimitry Andric 
4380b57cec5SDimitry Andric /* ------------------------------------------------------ */
4390b57cec5SDimitry Andric /* STATE mostly syncronized with global lock */
440fe6060f1SDimitry Andric /* data written to rarely by primary threads, read often by workers */
4410b57cec5SDimitry Andric /* TODO: None of this global padding stuff works consistently because the order
4420b57cec5SDimitry Andric    of declaration is not necessarily correlated to storage order. To fix this,
4430b57cec5SDimitry Andric    all the important globals must be put in a big structure instead. */
4440b57cec5SDimitry Andric KMP_ALIGN_CACHE
4450b57cec5SDimitry Andric kmp_info_t **__kmp_threads = NULL;
4460b57cec5SDimitry Andric kmp_root_t **__kmp_root = NULL;
44781ad6265SDimitry Andric kmp_old_threads_list_t *__kmp_old_threads_list = NULL;
4480b57cec5SDimitry Andric 
449fe6060f1SDimitry Andric /* data read/written to often by primary threads */
4500b57cec5SDimitry Andric KMP_ALIGN_CACHE
4510b57cec5SDimitry Andric volatile int __kmp_nth = 0;
4520b57cec5SDimitry Andric volatile int __kmp_all_nth = 0;
4530b57cec5SDimitry Andric volatile kmp_info_t *__kmp_thread_pool = NULL;
4540b57cec5SDimitry Andric volatile kmp_team_t *__kmp_team_pool = NULL;
4550b57cec5SDimitry Andric 
4560b57cec5SDimitry Andric KMP_ALIGN_CACHE
457*06c3fb27SDimitry Andric std::atomic<int> __kmp_thread_pool_active_nth = 0;
4580b57cec5SDimitry Andric 
4590b57cec5SDimitry Andric /* -------------------------------------------------
4600b57cec5SDimitry Andric  * GLOBAL/ROOT STATE */
4610b57cec5SDimitry Andric KMP_ALIGN_CACHE
462489b1cf2SDimitry Andric kmp_global_t __kmp_global;
4630b57cec5SDimitry Andric 
4640b57cec5SDimitry Andric /* ----------------------------------------------- */
4650b57cec5SDimitry Andric /* GLOBAL SYNCHRONIZATION LOCKS */
4660b57cec5SDimitry Andric /* TODO verify the need for these locks and if they need to be global */
4670b57cec5SDimitry Andric 
4680b57cec5SDimitry Andric #if KMP_USE_INTERNODE_ALIGNMENT
4690b57cec5SDimitry Andric /* Multinode systems have larger cache line granularity which can cause
4700b57cec5SDimitry Andric  * false sharing if the alignment is not large enough for these locks */
4710b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4720b57cec5SDimitry Andric 
4730b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_initz_lock); /* Control initializations */
4740b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4750b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_forkjoin_lock); /* control fork/join access */
4760b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4770b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_exit_lock); /* exit() is not always thread-safe */
4780b57cec5SDimitry Andric #if KMP_USE_MONITOR
4790b57cec5SDimitry Andric /* control monitor thread creation */
4800b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4810b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_monitor_lock);
4820b57cec5SDimitry Andric #endif
4830b57cec5SDimitry Andric /* used for the hack to allow threadprivate cache and __kmp_threads expansion
4840b57cec5SDimitry Andric    to co-exist */
4850b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4860b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_tp_cached_lock);
4870b57cec5SDimitry Andric 
4880b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4890b57cec5SDimitry Andric KMP_LOCK_INIT(__kmp_global_lock); /* Control OS/global access */
4900b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4910b57cec5SDimitry Andric kmp_queuing_lock_t __kmp_dispatch_lock; /* Control dispatch access  */
4920b57cec5SDimitry Andric KMP_ALIGN_CACHE_INTERNODE
4930b57cec5SDimitry Andric KMP_LOCK_INIT(__kmp_debug_lock); /* Control I/O access for KMP_DEBUG */
4940b57cec5SDimitry Andric #else
4950b57cec5SDimitry Andric KMP_ALIGN_CACHE
4960b57cec5SDimitry Andric 
4970b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_initz_lock); /* Control initializations */
4980b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_forkjoin_lock); /* control fork/join access */
4990b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_exit_lock); /* exit() is not always thread-safe */
5000b57cec5SDimitry Andric #if KMP_USE_MONITOR
5010b57cec5SDimitry Andric /* control monitor thread creation */
5020b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_monitor_lock);
5030b57cec5SDimitry Andric #endif
5040b57cec5SDimitry Andric /* used for the hack to allow threadprivate cache and __kmp_threads expansion
5050b57cec5SDimitry Andric    to co-exist */
5060b57cec5SDimitry Andric KMP_BOOTSTRAP_LOCK_INIT(__kmp_tp_cached_lock);
5070b57cec5SDimitry Andric 
5080b57cec5SDimitry Andric KMP_ALIGN(128)
5090b57cec5SDimitry Andric KMP_LOCK_INIT(__kmp_global_lock); /* Control OS/global access */
5100b57cec5SDimitry Andric KMP_ALIGN(128)
5110b57cec5SDimitry Andric kmp_queuing_lock_t __kmp_dispatch_lock; /* Control dispatch access  */
5120b57cec5SDimitry Andric KMP_ALIGN(128)
5130b57cec5SDimitry Andric KMP_LOCK_INIT(__kmp_debug_lock); /* Control I/O access for KMP_DEBUG */
5140b57cec5SDimitry Andric #endif
5150b57cec5SDimitry Andric 
5160b57cec5SDimitry Andric /* ----------------------------------------------- */
5170b57cec5SDimitry Andric 
5180b57cec5SDimitry Andric #if KMP_HANDLE_SIGNALS
5190b57cec5SDimitry Andric /* Signal handling is disabled by default, because it confuses users: In case of
5200b57cec5SDimitry Andric    sigsegv (or other trouble) in user code signal handler catches the signal,
5210b57cec5SDimitry Andric    which then "appears" in the monitor thread (when the monitor executes raise()
5220b57cec5SDimitry Andric    function). Users see signal in the monitor thread and blame OpenMP RTL.
5230b57cec5SDimitry Andric 
5240b57cec5SDimitry Andric    Grant said signal handling required on some older OSes (Irix?) supported by
5250b57cec5SDimitry Andric    KAI, because bad applications hung but not aborted. Currently it is not a
5260b57cec5SDimitry Andric    problem for Linux* OS, OS X* and Windows* OS.
5270b57cec5SDimitry Andric 
5280b57cec5SDimitry Andric    Grant: Found new hangs for EL4, EL5, and a Fedora Core machine.  So I'm
5290b57cec5SDimitry Andric    putting the default back for now to see if that fixes hangs on those
5300b57cec5SDimitry Andric    machines.
5310b57cec5SDimitry Andric 
5320b57cec5SDimitry Andric    2010-04013 Lev: It was a bug in Fortran RTL. Fortran RTL prints a kind of
5330b57cec5SDimitry Andric    stack backtrace when program is aborting, but the code is not signal-safe.
5340b57cec5SDimitry Andric    When multiple signals raised at the same time (which occurs in dynamic
5350b57cec5SDimitry Andric    negative tests because all the worker threads detects the same error),
5360b57cec5SDimitry Andric    Fortran RTL may hang. The bug finally fixed in Fortran RTL library provided
5370b57cec5SDimitry Andric    by Steve R., and will be available soon. */
5380b57cec5SDimitry Andric int __kmp_handle_signals = FALSE;
5390b57cec5SDimitry Andric #endif
5400b57cec5SDimitry Andric 
5410b57cec5SDimitry Andric #ifdef DEBUG_SUSPEND
5420b57cec5SDimitry Andric int get_suspend_count_(void) {
5430b57cec5SDimitry Andric   int count = __kmp_suspend_count;
5440b57cec5SDimitry Andric   __kmp_suspend_count = 0;
5450b57cec5SDimitry Andric   return count;
5460b57cec5SDimitry Andric }
5470b57cec5SDimitry Andric void set_suspend_count_(int *value) { __kmp_suspend_count = *value; }
5480b57cec5SDimitry Andric #endif
5490b57cec5SDimitry Andric 
5500b57cec5SDimitry Andric kmp_target_offload_kind_t __kmp_target_offload = tgt_default;
5510b57cec5SDimitry Andric 
5520b57cec5SDimitry Andric // OMP Pause Resources
5530b57cec5SDimitry Andric kmp_pause_status_t __kmp_pause_status = kmp_not_paused;
5540b57cec5SDimitry Andric 
555fe6060f1SDimitry Andric // Nesting mode
556fe6060f1SDimitry Andric int __kmp_nesting_mode = 0;
557fe6060f1SDimitry Andric int __kmp_nesting_mode_nlevels = 1;
558fe6060f1SDimitry Andric int *__kmp_nesting_nth_level;
559fe6060f1SDimitry Andric 
560*06c3fb27SDimitry Andric #if OMPX_TASKGRAPH
561*06c3fb27SDimitry Andric // TDG record & replay
562*06c3fb27SDimitry Andric int __kmp_tdg_dot = 0;
563*06c3fb27SDimitry Andric kmp_int32 __kmp_max_tdgs = 100;
564*06c3fb27SDimitry Andric kmp_tdg_info_t **__kmp_global_tdgs = NULL;
565*06c3fb27SDimitry Andric kmp_int32 __kmp_curr_tdg_idx =
566*06c3fb27SDimitry Andric     0; // Id of the current TDG being recorded or executed
567*06c3fb27SDimitry Andric kmp_int32 __kmp_num_tdg = 0;
568*06c3fb27SDimitry Andric kmp_int32 __kmp_successors_size = 10; // Initial succesor size list for
569*06c3fb27SDimitry Andric                                       // recording
570*06c3fb27SDimitry Andric std::atomic<kmp_int32> __kmp_tdg_task_id = 0;
571*06c3fb27SDimitry Andric #endif
5720b57cec5SDimitry Andric // end of file //
573*06c3fb27SDimitry Andric 
574