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kmp.h
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kmp.h
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/*! \file */
/*
* kmp.h -- KPTS runtime header file.
*/
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.txt for details.
//
//===----------------------------------------------------------------------===//
#ifndef KMP_H
#define KMP_H
#include "kmp_config.h"
/* #define BUILD_PARALLEL_ORDERED 1 */
/* This fix replaces gettimeofday with clock_gettime for better scalability on
the Altix. Requires user code to be linked with -lrt.
*/
//#define FIX_SGI_CLOCK
/* Defines for OpenMP 3.0 tasking and auto scheduling */
# ifndef KMP_STATIC_STEAL_ENABLED
# define KMP_STATIC_STEAL_ENABLED 1
# endif
#define TASK_CURRENT_NOT_QUEUED 0
#define TASK_CURRENT_QUEUED 1
#ifdef BUILD_TIED_TASK_STACK
#define TASK_STACK_EMPTY 0 // entries when the stack is empty
#define TASK_STACK_BLOCK_BITS 5 // Used to define TASK_STACK_SIZE and TASK_STACK_MASK
#define TASK_STACK_BLOCK_SIZE ( 1 << TASK_STACK_BLOCK_BITS ) // Number of entries in each task stack array
#define TASK_STACK_INDEX_MASK ( TASK_STACK_BLOCK_SIZE - 1 ) // Mask for determining index into stack block
#endif // BUILD_TIED_TASK_STACK
#define TASK_NOT_PUSHED 1
#define TASK_SUCCESSFULLY_PUSHED 0
#define TASK_TIED 1
#define TASK_UNTIED 0
#define TASK_EXPLICIT 1
#define TASK_IMPLICIT 0
#define TASK_PROXY 1
#define TASK_FULL 0
#define KMP_CANCEL_THREADS
#define KMP_THREAD_ATTR
// Android does not have pthread_cancel. Undefine KMP_CANCEL_THREADS if being
// built on Android
#if defined(__ANDROID__)
#undef KMP_CANCEL_THREADS
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdarg.h>
#include <string.h>
#include <signal.h>
/* include <ctype.h> don't use; problems with /MD on Windows* OS NT due to bad Microsoft library */
/* some macros provided below to replace some of these functions */
#ifndef __ABSOFT_WIN
#include <sys/types.h>
#endif
#include <limits.h>
#include <time.h>
#include <errno.h>
#include "kmp_os.h"
#include "kmp_safe_c_api.h"
#if KMP_STATS_ENABLED
class kmp_stats_list;
#endif
#if KMP_USE_HWLOC && KMP_AFFINITY_SUPPORTED
# include "hwloc.h"
#endif
#if KMP_ARCH_X86 || KMP_ARCH_X86_64
#include <xmmintrin.h>
#endif
#include "kmp_version.h"
#include "kmp_debug.h"
#include "kmp_lock.h"
#if USE_DEBUGGER
#include "kmp_debugger.h"
#endif
#include "kmp_i18n.h"
#define KMP_HANDLE_SIGNALS (KMP_OS_UNIX || KMP_OS_WINDOWS)
#include "kmp_wrapper_malloc.h"
#if KMP_OS_UNIX
# include <unistd.h>
# if !defined NSIG && defined _NSIG
# define NSIG _NSIG
# endif
#endif
#if KMP_OS_LINUX
# pragma weak clock_gettime
#endif
#if OMPT_SUPPORT
#include "ompt-internal.h"
#endif
/*Select data placement in NUMA memory */
#define NO_FIRST_TOUCH 0
#define FIRST_TOUCH 1 /* Exploit SGI's first touch page placement algo */
/* If not specified on compile command line, assume no first touch */
#ifndef BUILD_MEMORY
#define BUILD_MEMORY NO_FIRST_TOUCH
#endif
// 0 - no fast memory allocation, alignment: 8-byte on x86, 16-byte on x64.
// 3 - fast allocation using sync, non-sync free lists of any size, non-self free lists of limited size.
#ifndef USE_FAST_MEMORY
#define USE_FAST_MEMORY 3
#endif
#ifndef KMP_NESTED_HOT_TEAMS
# define KMP_NESTED_HOT_TEAMS 0
# define USE_NESTED_HOT_ARG(x)
#else
# if KMP_NESTED_HOT_TEAMS
# if OMP_40_ENABLED
# define USE_NESTED_HOT_ARG(x) ,x
# else
// Nested hot teams feature depends on omp 4.0, disable it for earlier versions
# undef KMP_NESTED_HOT_TEAMS
# define KMP_NESTED_HOT_TEAMS 0
# define USE_NESTED_HOT_ARG(x)
# endif
# else
# define USE_NESTED_HOT_ARG(x)
# endif
#endif
// Assume using BGET compare_exchange instruction instead of lock by default.
#ifndef USE_CMP_XCHG_FOR_BGET
#define USE_CMP_XCHG_FOR_BGET 1
#endif
// Test to see if queuing lock is better than bootstrap lock for bget
// #ifndef USE_QUEUING_LOCK_FOR_BGET
// #define USE_QUEUING_LOCK_FOR_BGET
// #endif
#define KMP_NSEC_PER_SEC 1000000000L
#define KMP_USEC_PER_SEC 1000000L
/*!
@ingroup BASIC_TYPES
@{
*/
// FIXME DOXYGEN... need to group these flags somehow (Making them an anonymous enum would do it...)
/*!
Values for bit flags used in the ident_t to describe the fields.
*/
/*! Use trampoline for internal microtasks */
#define KMP_IDENT_IMB 0x01
/*! Use c-style ident structure */
#define KMP_IDENT_KMPC 0x02
/* 0x04 is no longer used */
/*! Entry point generated by auto-parallelization */
#define KMP_IDENT_AUTOPAR 0x08
/*! Compiler generates atomic reduction option for kmpc_reduce* */
#define KMP_IDENT_ATOMIC_REDUCE 0x10
/*! To mark a 'barrier' directive in user code */
#define KMP_IDENT_BARRIER_EXPL 0x20
/*! To Mark implicit barriers. */
#define KMP_IDENT_BARRIER_IMPL 0x0040
#define KMP_IDENT_BARRIER_IMPL_MASK 0x01C0
#define KMP_IDENT_BARRIER_IMPL_FOR 0x0040
#define KMP_IDENT_BARRIER_IMPL_SECTIONS 0x00C0
#define KMP_IDENT_BARRIER_IMPL_SINGLE 0x0140
#define KMP_IDENT_BARRIER_IMPL_WORKSHARE 0x01C0
/*!
* The ident structure that describes a source location.
*/
typedef struct ident {
kmp_int32 reserved_1; /**< might be used in Fortran; see above */
kmp_int32 flags; /**< also f.flags; KMP_IDENT_xxx flags; KMP_IDENT_KMPC identifies this union member */
kmp_int32 reserved_2; /**< not really used in Fortran any more; see above */
#if USE_ITT_BUILD
/* but currently used for storing region-specific ITT */
/* contextual information. */
#endif /* USE_ITT_BUILD */
kmp_int32 reserved_3; /**< source[4] in Fortran, do not use for C++ */
char const *psource; /**< String describing the source location.
The string is composed of semi-colon separated fields which describe the source file,
the function and a pair of line numbers that delimit the construct.
*/
} ident_t;
/*!
@}
*/
// Some forward declarations.
typedef union kmp_team kmp_team_t;
typedef struct kmp_taskdata kmp_taskdata_t;
typedef union kmp_task_team kmp_task_team_t;
typedef union kmp_team kmp_team_p;
typedef union kmp_info kmp_info_p;
typedef union kmp_root kmp_root_p;
#ifdef __cplusplus
extern "C" {
#endif
/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */
/* Pack two 32-bit signed integers into a 64-bit signed integer */
/* ToDo: Fix word ordering for big-endian machines. */
#define KMP_PACK_64(HIGH_32,LOW_32) \
( (kmp_int64) ((((kmp_uint64)(HIGH_32))<<32) | (kmp_uint64)(LOW_32)) )
/*
* Generic string manipulation macros.
* Assume that _x is of type char *
*/
#define SKIP_WS(_x) { while (*(_x) == ' ' || *(_x) == '\t') (_x)++; }
#define SKIP_DIGITS(_x) { while (*(_x) >= '0' && *(_x) <= '9') (_x)++; }
#define SKIP_TO(_x,_c) { while (*(_x) != '\0' && *(_x) != (_c)) (_x)++; }
/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */
#define KMP_MAX( x, y ) ( (x) > (y) ? (x) : (y) )
#define KMP_MIN( x, y ) ( (x) < (y) ? (x) : (y) )
/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */
/* Enumeration types */
enum kmp_state_timer {
ts_stop,
ts_start,
ts_pause,
ts_last_state
};
enum dynamic_mode {
dynamic_default,
#ifdef USE_LOAD_BALANCE
dynamic_load_balance,
#endif /* USE_LOAD_BALANCE */
dynamic_random,
dynamic_thread_limit,
dynamic_max
};
/* external schedule constants, duplicate enum omp_sched in omp.h in order to not include it here */
#ifndef KMP_SCHED_TYPE_DEFINED
#define KMP_SCHED_TYPE_DEFINED
typedef enum kmp_sched {
kmp_sched_lower = 0, // lower and upper bounds are for routine parameter check
// Note: need to adjust __kmp_sch_map global array in case this enum is changed
kmp_sched_static = 1, // mapped to kmp_sch_static_chunked (33)
kmp_sched_dynamic = 2, // mapped to kmp_sch_dynamic_chunked (35)
kmp_sched_guided = 3, // mapped to kmp_sch_guided_chunked (36)
kmp_sched_auto = 4, // mapped to kmp_sch_auto (38)
kmp_sched_upper_std = 5, // upper bound for standard schedules
kmp_sched_lower_ext = 100, // lower bound of Intel extension schedules
kmp_sched_trapezoidal = 101, // mapped to kmp_sch_trapezoidal (39)
#if KMP_STATIC_STEAL_ENABLED
kmp_sched_static_steal = 102, // mapped to kmp_sch_static_steal (44)
#endif
kmp_sched_upper,
kmp_sched_default = kmp_sched_static // default scheduling
} kmp_sched_t;
#endif
/*!
@ingroup WORK_SHARING
* Describes the loop schedule to be used for a parallel for loop.
*/
enum sched_type {
kmp_sch_lower = 32, /**< lower bound for unordered values */
kmp_sch_static_chunked = 33,
kmp_sch_static = 34, /**< static unspecialized */
kmp_sch_dynamic_chunked = 35,
kmp_sch_guided_chunked = 36, /**< guided unspecialized */
kmp_sch_runtime = 37,
kmp_sch_auto = 38, /**< auto */
kmp_sch_trapezoidal = 39,
/* accessible only through KMP_SCHEDULE environment variable */
kmp_sch_static_greedy = 40,
kmp_sch_static_balanced = 41,
/* accessible only through KMP_SCHEDULE environment variable */
kmp_sch_guided_iterative_chunked = 42,
kmp_sch_guided_analytical_chunked = 43,
kmp_sch_static_steal = 44, /**< accessible only through KMP_SCHEDULE environment variable */
#if OMP_45_ENABLED
kmp_sch_static_balanced_chunked = 45, /**< static with chunk adjustment (e.g., simd) */
#endif
/* accessible only through KMP_SCHEDULE environment variable */
kmp_sch_upper = 46, /**< upper bound for unordered values */
kmp_ord_lower = 64, /**< lower bound for ordered values, must be power of 2 */
kmp_ord_static_chunked = 65,
kmp_ord_static = 66, /**< ordered static unspecialized */
kmp_ord_dynamic_chunked = 67,
kmp_ord_guided_chunked = 68,
kmp_ord_runtime = 69,
kmp_ord_auto = 70, /**< ordered auto */
kmp_ord_trapezoidal = 71,
kmp_ord_upper = 72, /**< upper bound for ordered values */
#if OMP_40_ENABLED
/* Schedules for Distribute construct */
kmp_distribute_static_chunked = 91, /**< distribute static chunked */
kmp_distribute_static = 92, /**< distribute static unspecialized */
#endif
/*
* For the "nomerge" versions, kmp_dispatch_next*() will always return
* a single iteration/chunk, even if the loop is serialized. For the
* schedule types listed above, the entire iteration vector is returned
* if the loop is serialized. This doesn't work for gcc/gcomp sections.
*/
kmp_nm_lower = 160, /**< lower bound for nomerge values */
kmp_nm_static_chunked = (kmp_sch_static_chunked - kmp_sch_lower + kmp_nm_lower),
kmp_nm_static = 162, /**< static unspecialized */
kmp_nm_dynamic_chunked = 163,
kmp_nm_guided_chunked = 164, /**< guided unspecialized */
kmp_nm_runtime = 165,
kmp_nm_auto = 166, /**< auto */
kmp_nm_trapezoidal = 167,
/* accessible only through KMP_SCHEDULE environment variable */
kmp_nm_static_greedy = 168,
kmp_nm_static_balanced = 169,
/* accessible only through KMP_SCHEDULE environment variable */
kmp_nm_guided_iterative_chunked = 170,
kmp_nm_guided_analytical_chunked = 171,
kmp_nm_static_steal = 172, /* accessible only through OMP_SCHEDULE environment variable */
kmp_nm_ord_static_chunked = 193,
kmp_nm_ord_static = 194, /**< ordered static unspecialized */
kmp_nm_ord_dynamic_chunked = 195,
kmp_nm_ord_guided_chunked = 196,
kmp_nm_ord_runtime = 197,
kmp_nm_ord_auto = 198, /**< auto */
kmp_nm_ord_trapezoidal = 199,
kmp_nm_upper = 200, /**< upper bound for nomerge values */
#if OMP_45_ENABLED
/* Support for OpenMP 4.5 monotonic and nonmonotonic schedule modifiers.
* Since we need to distinguish the three possible cases (no modifier, monotonic modifier,
* nonmonotonic modifier), we need separate bits for each modifier.
* The absence of monotonic does not imply nonmonotonic, especially since 4.5 says
* that the behaviour of the "no modifier" case is implementation defined in 4.5,
* but will become "nonmonotonic" in 5.0.
*
* Since we're passing a full 32 bit value, we can use a couple of high bits for these
* flags; out of paranoia we avoid the sign bit.
*
* These modifiers can be or-ed into non-static schedules by the compiler to pass
* the additional information.
* They will be stripped early in the processing in __kmp_dispatch_init when setting up schedules, so
* most of the code won't ever see schedules with these bits set.
*/
kmp_sch_modifier_monotonic = (1<<29), /**< Set if the monotonic schedule modifier was present */
kmp_sch_modifier_nonmonotonic = (1<<30), /**< Set if the nonmonotonic schedule modifier was present */
# define SCHEDULE_WITHOUT_MODIFIERS(s) (enum sched_type)((s) & ~ (kmp_sch_modifier_nonmonotonic | kmp_sch_modifier_monotonic))
# define SCHEDULE_HAS_MONOTONIC(s) (((s) & kmp_sch_modifier_monotonic) != 0)
# define SCHEDULE_HAS_NONMONOTONIC(s) (((s) & kmp_sch_modifier_nonmonotonic) != 0)
# define SCHEDULE_HAS_NO_MODIFIERS(s) (((s) & (kmp_sch_modifier_nonmonotonic | kmp_sch_modifier_monotonic)) == 0)
#else
/* By doing this we hope to avoid multiple tests on OMP_45_ENABLED. Compilers can now eliminate tests on compile time
* constants and dead code that results from them, so we can leave code guarded by such an if in place.
*/
# define SCHEDULE_WITHOUT_MODIFIERS(s) (s)
# define SCHEDULE_HAS_MONOTONIC(s) false
# define SCHEDULE_HAS_NONMONOTONIC(s) false
# define SCHEDULE_HAS_NO_MODIFIERS(s) true
#endif
kmp_sch_default = kmp_sch_static /**< default scheduling algorithm */
};
/* Type to keep runtime schedule set via OMP_SCHEDULE or omp_set_schedule() */
typedef struct kmp_r_sched {
enum sched_type r_sched_type;
int chunk;
} kmp_r_sched_t;
extern enum sched_type __kmp_sch_map[]; // map OMP 3.0 schedule types with our internal schedule types
enum library_type {
library_none,
library_serial,
library_turnaround,
library_throughput
};
#if KMP_OS_LINUX
enum clock_function_type {
clock_function_gettimeofday,
clock_function_clock_gettime
};
#endif /* KMP_OS_LINUX */
#if KMP_ARCH_X86_64 && (KMP_OS_LINUX || KMP_OS_WINDOWS)
enum mic_type {
non_mic,
mic1,
mic2,
mic3,
dummy
};
#endif
/* ------------------------------------------------------------------------ */
/* -- fast reduction stuff ------------------------------------------------ */
#undef KMP_FAST_REDUCTION_BARRIER
#define KMP_FAST_REDUCTION_BARRIER 1
#undef KMP_FAST_REDUCTION_CORE_DUO
#if KMP_ARCH_X86 || KMP_ARCH_X86_64
#define KMP_FAST_REDUCTION_CORE_DUO 1
#endif
enum _reduction_method {
reduction_method_not_defined = 0,
critical_reduce_block = ( 1 << 8 ),
atomic_reduce_block = ( 2 << 8 ),
tree_reduce_block = ( 3 << 8 ),
empty_reduce_block = ( 4 << 8 )
};
// description of the packed_reduction_method variable
// the packed_reduction_method variable consists of two enum types variables that are packed together into 0-th byte and 1-st byte:
// 0: ( packed_reduction_method & 0x000000FF ) is a 'enum barrier_type' value of barrier that will be used in fast reduction: bs_plain_barrier or bs_reduction_barrier
// 1: ( packed_reduction_method & 0x0000FF00 ) is a reduction method that will be used in fast reduction;
// reduction method is of 'enum _reduction_method' type and it's defined the way so that the bits of 0-th byte are empty,
// so no need to execute a shift instruction while packing/unpacking
#if KMP_FAST_REDUCTION_BARRIER
#define PACK_REDUCTION_METHOD_AND_BARRIER(reduction_method,barrier_type) \
( ( reduction_method ) | ( barrier_type ) )
#define UNPACK_REDUCTION_METHOD(packed_reduction_method) \
( ( enum _reduction_method )( ( packed_reduction_method ) & ( 0x0000FF00 ) ) )
#define UNPACK_REDUCTION_BARRIER(packed_reduction_method) \
( ( enum barrier_type )( ( packed_reduction_method ) & ( 0x000000FF ) ) )
#else
#define PACK_REDUCTION_METHOD_AND_BARRIER(reduction_method,barrier_type) \
( reduction_method )
#define UNPACK_REDUCTION_METHOD(packed_reduction_method) \
( packed_reduction_method )
#define UNPACK_REDUCTION_BARRIER(packed_reduction_method) \
( bs_plain_barrier )
#endif
#define TEST_REDUCTION_METHOD(packed_reduction_method,which_reduction_block) \
( ( UNPACK_REDUCTION_METHOD( packed_reduction_method ) ) == ( which_reduction_block ) )
#if KMP_FAST_REDUCTION_BARRIER
#define TREE_REDUCE_BLOCK_WITH_REDUCTION_BARRIER \
( PACK_REDUCTION_METHOD_AND_BARRIER( tree_reduce_block, bs_reduction_barrier ) )
#define TREE_REDUCE_BLOCK_WITH_PLAIN_BARRIER \
( PACK_REDUCTION_METHOD_AND_BARRIER( tree_reduce_block, bs_plain_barrier ) )
#endif
typedef int PACKED_REDUCTION_METHOD_T;
/* -- end of fast reduction stuff ----------------------------------------- */
/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */
#if KMP_OS_WINDOWS
# define USE_CBLKDATA
# pragma warning( push )
# pragma warning( disable: 271 310 )
# include <windows.h>
# pragma warning( pop )
#endif
#if KMP_OS_UNIX
# include <pthread.h>
# include <dlfcn.h>
#endif
/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */
/*
* Only Linux* OS and Windows* OS support thread affinity.
*/
#if KMP_AFFINITY_SUPPORTED
// GROUP_AFFINITY is already defined for _MSC_VER>=1600 (VS2010 and later).
# if KMP_OS_WINDOWS
# if _MSC_VER < 1600
typedef struct GROUP_AFFINITY {
KAFFINITY Mask;
WORD Group;
WORD Reserved[3];
} GROUP_AFFINITY;
# endif /* _MSC_VER < 1600 */
# if KMP_GROUP_AFFINITY
extern int __kmp_num_proc_groups;
# else
static const int __kmp_num_proc_groups = 1;
# endif /* KMP_GROUP_AFFINITY */
typedef DWORD (*kmp_GetActiveProcessorCount_t)(WORD);
extern kmp_GetActiveProcessorCount_t __kmp_GetActiveProcessorCount;
typedef WORD (*kmp_GetActiveProcessorGroupCount_t)(void);
extern kmp_GetActiveProcessorGroupCount_t __kmp_GetActiveProcessorGroupCount;
typedef BOOL (*kmp_GetThreadGroupAffinity_t)(HANDLE, GROUP_AFFINITY *);
extern kmp_GetThreadGroupAffinity_t __kmp_GetThreadGroupAffinity;
typedef BOOL (*kmp_SetThreadGroupAffinity_t)(HANDLE, const GROUP_AFFINITY *, GROUP_AFFINITY *);
extern kmp_SetThreadGroupAffinity_t __kmp_SetThreadGroupAffinity;
# endif /* KMP_OS_WINDOWS */
# if KMP_USE_HWLOC
extern hwloc_topology_t __kmp_hwloc_topology;
extern int __kmp_hwloc_error;
# endif
extern size_t __kmp_affin_mask_size;
# define KMP_AFFINITY_CAPABLE() (__kmp_affin_mask_size > 0)
# define KMP_AFFINITY_DISABLE() (__kmp_affin_mask_size = 0)
# define KMP_AFFINITY_ENABLE(mask_size) (__kmp_affin_mask_size = mask_size)
# define KMP_CPU_SET_ITERATE(i,mask) \
for (i = (mask)->begin(); i != (mask)->end() ; i = (mask)->next(i))
# define KMP_CPU_SET(i,mask) (mask)->set(i)
# define KMP_CPU_ISSET(i,mask) (mask)->is_set(i)
# define KMP_CPU_CLR(i,mask) (mask)->clear(i)
# define KMP_CPU_ZERO(mask) (mask)->zero()
# define KMP_CPU_COPY(dest, src) (dest)->copy(src)
# define KMP_CPU_AND(dest, src) (dest)->bitwise_and(src)
# define KMP_CPU_COMPLEMENT(max_bit_number, mask) (mask)->bitwise_not()
# define KMP_CPU_UNION(dest, src) (dest)->bitwise_or(src)
# define KMP_CPU_ALLOC(ptr) (ptr = __kmp_affinity_dispatch->allocate_mask())
# define KMP_CPU_FREE(ptr) __kmp_affinity_dispatch->deallocate_mask(ptr)
# define KMP_CPU_ALLOC_ON_STACK(ptr) KMP_CPU_ALLOC(ptr)
# define KMP_CPU_FREE_FROM_STACK(ptr) KMP_CPU_FREE(ptr)
# define KMP_CPU_INTERNAL_ALLOC(ptr) KMP_CPU_ALLOC(ptr)
# define KMP_CPU_INTERNAL_FREE(ptr) KMP_CPU_FREE(ptr)
# define KMP_CPU_INDEX(arr,i) __kmp_affinity_dispatch->index_mask_array(arr, i)
# define KMP_CPU_ALLOC_ARRAY(arr, n) (arr = __kmp_affinity_dispatch->allocate_mask_array(n))
# define KMP_CPU_FREE_ARRAY(arr, n) __kmp_affinity_dispatch->deallocate_mask_array(arr)
# define KMP_CPU_INTERNAL_ALLOC_ARRAY(arr, n) KMP_CPU_ALLOC_ARRAY(arr, n)
# define KMP_CPU_INTERNAL_FREE_ARRAY(arr, n) KMP_CPU_FREE_ARRAY(arr, n)
# define __kmp_get_system_affinity(mask, abort_bool) (mask)->get_system_affinity(abort_bool)
# define __kmp_set_system_affinity(mask, abort_bool) (mask)->set_system_affinity(abort_bool)
# define __kmp_get_proc_group(mask) (mask)->get_proc_group()
class KMPAffinity {
public:
class Mask {
public:
void* operator new(size_t n);
void operator delete(void* p);
void* operator new[](size_t n);
void operator delete[](void* p);
virtual ~Mask() {}
// Set bit i to 1
virtual void set(int i) {}
// Return bit i
virtual bool is_set(int i) const { return false; }
// Set bit i to 0
virtual void clear(int i) {}
// Zero out entire mask
virtual void zero() {}
// Copy src into this mask
virtual void copy(const Mask* src) {}
// this &= rhs
virtual void bitwise_and(const Mask* rhs) {}
// this |= rhs
virtual void bitwise_or(const Mask* rhs) {}
// this = ~this
virtual void bitwise_not() {}
// API for iterating over an affinity mask
// for (int i = mask->begin(); i != mask->end(); i = mask->next(i))
virtual int begin() const { return 0; }
virtual int end() const { return 0; }
virtual int next(int previous) const { return 0; }
// Set the system's affinity to this affinity mask's value
virtual int set_system_affinity(bool abort_on_error) const { return -1; }
// Set this affinity mask to the current system affinity
virtual int get_system_affinity(bool abort_on_error) { return -1; }
// Only 1 DWORD in the mask should have any procs set.
// Return the appropriate index, or -1 for an invalid mask.
virtual int get_proc_group() const { return -1; }
};
void* operator new(size_t n);
void operator delete(void* p);
// Determine if affinity is capable
virtual void determine_capable(const char* env_var) {}
// Bind the current thread to os proc
virtual void bind_thread(int proc) {}
// Factory functions to allocate/deallocate a mask
virtual Mask* allocate_mask() { return nullptr; }
virtual void deallocate_mask(Mask* m) { }
virtual Mask* allocate_mask_array(int num) { return nullptr; }
virtual void deallocate_mask_array(Mask* m) { }
virtual Mask* index_mask_array(Mask* m, int index) { return nullptr; }
static void pick_api();
static void destroy_api();
enum api_type {
NATIVE_OS
#if KMP_USE_HWLOC
, HWLOC
#endif
};
virtual api_type get_api_type() const { KMP_ASSERT(0); return NATIVE_OS; };
private:
static bool picked_api;
};
typedef KMPAffinity::Mask kmp_affin_mask_t;
extern KMPAffinity* __kmp_affinity_dispatch;
//
// Declare local char buffers with this size for printing debug and info
// messages, using __kmp_affinity_print_mask().
//
#define KMP_AFFIN_MASK_PRINT_LEN 1024
enum affinity_type {
affinity_none = 0,
affinity_physical,
affinity_logical,
affinity_compact,
affinity_scatter,
affinity_explicit,
affinity_balanced,
affinity_disabled, // not used outsize the env var parser
affinity_default
};
enum affinity_gran {
affinity_gran_fine = 0,
affinity_gran_thread,
affinity_gran_core,
affinity_gran_package,
affinity_gran_node,
#if KMP_GROUP_AFFINITY
//
// The "group" granularity isn't necesssarily coarser than all of the
// other levels, but we put it last in the enum.
//
affinity_gran_group,
#endif /* KMP_GROUP_AFFINITY */
affinity_gran_default
};
enum affinity_top_method {
affinity_top_method_all = 0, // try all (supported) methods, in order
#if KMP_ARCH_X86 || KMP_ARCH_X86_64
affinity_top_method_apicid,
affinity_top_method_x2apicid,
#endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */
affinity_top_method_cpuinfo, // KMP_CPUINFO_FILE is usable on Windows* OS, too
#if KMP_GROUP_AFFINITY
affinity_top_method_group,
#endif /* KMP_GROUP_AFFINITY */
affinity_top_method_flat,
#if KMP_USE_HWLOC
affinity_top_method_hwloc,
#endif
affinity_top_method_default
};
#define affinity_respect_mask_default (-1)
extern enum affinity_type __kmp_affinity_type; /* Affinity type */
extern enum affinity_gran __kmp_affinity_gran; /* Affinity granularity */
extern int __kmp_affinity_gran_levels; /* corresponding int value */
extern int __kmp_affinity_dups; /* Affinity duplicate masks */
extern enum affinity_top_method __kmp_affinity_top_method;
extern int __kmp_affinity_compact; /* Affinity 'compact' value */
extern int __kmp_affinity_offset; /* Affinity offset value */
extern int __kmp_affinity_verbose; /* Was verbose specified for KMP_AFFINITY? */
extern int __kmp_affinity_warnings; /* KMP_AFFINITY warnings enabled ? */
extern int __kmp_affinity_respect_mask; /* Respect process' initial affinity mask? */
extern char * __kmp_affinity_proclist; /* proc ID list */
extern kmp_affin_mask_t *__kmp_affinity_masks;
extern unsigned __kmp_affinity_num_masks;
extern void __kmp_affinity_bind_thread(int which);
extern kmp_affin_mask_t *__kmp_affin_fullMask;
extern char const * __kmp_cpuinfo_file;
#endif /* KMP_AFFINITY_SUPPORTED */
#if OMP_40_ENABLED
//
// This needs to be kept in sync with the values in omp.h !!!
//
typedef enum kmp_proc_bind_t {
proc_bind_false = 0,
proc_bind_true,
proc_bind_master,
proc_bind_close,
proc_bind_spread,
proc_bind_intel, // use KMP_AFFINITY interface
proc_bind_default
} kmp_proc_bind_t;
typedef struct kmp_nested_proc_bind_t {
kmp_proc_bind_t *bind_types;
int size;
int used;
} kmp_nested_proc_bind_t;
extern kmp_nested_proc_bind_t __kmp_nested_proc_bind;
#endif /* OMP_40_ENABLED */
# if KMP_AFFINITY_SUPPORTED
# define KMP_PLACE_ALL (-1)
# define KMP_PLACE_UNDEFINED (-2)
# endif /* KMP_AFFINITY_SUPPORTED */
extern int __kmp_affinity_num_places;
#if OMP_40_ENABLED
typedef enum kmp_cancel_kind_t {
cancel_noreq = 0,
cancel_parallel = 1,
cancel_loop = 2,
cancel_sections = 3,
cancel_taskgroup = 4
} kmp_cancel_kind_t;
#endif // OMP_40_ENABLED
extern int __kmp_place_num_sockets;
extern int __kmp_place_socket_offset;
extern int __kmp_place_num_cores;
extern int __kmp_place_core_offset;
extern int __kmp_place_num_threads_per_core;
/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */
#define KMP_PAD(type, sz) (sizeof(type) + (sz - ((sizeof(type) - 1) % (sz)) - 1))
//
// We need to avoid using -1 as a GTID as +1 is added to the gtid
// when storing it in a lock, and the value 0 is reserved.
//
#define KMP_GTID_DNE (-2) /* Does not exist */
#define KMP_GTID_SHUTDOWN (-3) /* Library is shutting down */
#define KMP_GTID_MONITOR (-4) /* Monitor thread ID */
#define KMP_GTID_UNKNOWN (-5) /* Is not known */
#define KMP_GTID_MIN (-6) /* Minimal gtid for low bound check in DEBUG */
#define __kmp_get_gtid() __kmp_get_global_thread_id()
#define __kmp_entry_gtid() __kmp_get_global_thread_id_reg()
#define __kmp_tid_from_gtid(gtid) ( KMP_DEBUG_ASSERT( (gtid) >= 0 ), \
__kmp_threads[ (gtid) ]->th.th_info.ds.ds_tid )
#define __kmp_get_tid() ( __kmp_tid_from_gtid( __kmp_get_gtid() ) )
#define __kmp_gtid_from_tid(tid,team) ( KMP_DEBUG_ASSERT( (tid) >= 0 && (team) != NULL ), \
team -> t.t_threads[ (tid) ] -> th.th_info .ds.ds_gtid )
#define __kmp_get_team() ( __kmp_threads[ (__kmp_get_gtid()) ]-> th.th_team )
#define __kmp_team_from_gtid(gtid) ( KMP_DEBUG_ASSERT( (gtid) >= 0 ), \
__kmp_threads[ (gtid) ]-> th.th_team )
#define __kmp_thread_from_gtid(gtid) ( KMP_DEBUG_ASSERT( (gtid) >= 0 ), __kmp_threads[ (gtid) ] )
#define __kmp_get_thread() ( __kmp_thread_from_gtid( __kmp_get_gtid() ) )
// Returns current thread (pointer to kmp_info_t). In contrast to __kmp_get_thread(), it works
// with registered and not-yet-registered threads.
#define __kmp_gtid_from_thread(thr) ( KMP_DEBUG_ASSERT( (thr) != NULL ), \
(thr)->th.th_info.ds.ds_gtid )
// AT: Which way is correct?
// AT: 1. nproc = __kmp_threads[ ( gtid ) ] -> th.th_team -> t.t_nproc;
// AT: 2. nproc = __kmp_threads[ ( gtid ) ] -> th.th_team_nproc;
#define __kmp_get_team_num_threads(gtid) ( __kmp_threads[ ( gtid ) ] -> th.th_team -> t.t_nproc )
/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */
#define KMP_UINT64_MAX (~((kmp_uint64)1<<((sizeof(kmp_uint64)*(1<<3))-1)))
#define KMP_MIN_NTH 1
#ifndef KMP_MAX_NTH
# if defined(PTHREAD_THREADS_MAX) && PTHREAD_THREADS_MAX < INT_MAX
# define KMP_MAX_NTH PTHREAD_THREADS_MAX
# else
# define KMP_MAX_NTH INT_MAX
# endif
#endif /* KMP_MAX_NTH */
#ifdef PTHREAD_STACK_MIN
# define KMP_MIN_STKSIZE PTHREAD_STACK_MIN
#else
# define KMP_MIN_STKSIZE ((size_t)(32 * 1024))
#endif
#define KMP_MAX_STKSIZE (~((size_t)1<<((sizeof(size_t)*(1<<3))-1)))
#if KMP_ARCH_X86
# define KMP_DEFAULT_STKSIZE ((size_t)(2 * 1024 * 1024))
#elif KMP_ARCH_X86_64
# define KMP_DEFAULT_STKSIZE ((size_t)(4 * 1024 * 1024))
# define KMP_BACKUP_STKSIZE ((size_t)(2 * 1024 * 1024))
#else
# define KMP_DEFAULT_STKSIZE ((size_t)(1024 * 1024))
#endif
#define KMP_DEFAULT_MALLOC_POOL_INCR ((size_t) (1024 * 1024))
#define KMP_MIN_MALLOC_POOL_INCR ((size_t) (4 * 1024))
#define KMP_MAX_MALLOC_POOL_INCR (~((size_t)1<<((sizeof(size_t)*(1<<3))-1)))
#define KMP_MIN_STKOFFSET (0)
#define KMP_MAX_STKOFFSET KMP_MAX_STKSIZE
#if KMP_OS_DARWIN
# define KMP_DEFAULT_STKOFFSET KMP_MIN_STKOFFSET
#else
# define KMP_DEFAULT_STKOFFSET CACHE_LINE
#endif
#define KMP_MIN_STKPADDING (0)
#define KMP_MAX_STKPADDING (2 * 1024 * 1024)
#define KMP_BLOCKTIME_MULTIPLIER (1000) /* number of blocktime units per second */
#define KMP_MIN_BLOCKTIME (0)
#define KMP_MAX_BLOCKTIME (INT_MAX) /* Must be this for "infinite" setting the work */
#define KMP_DEFAULT_BLOCKTIME (200) /* __kmp_blocktime is in milliseconds */
#if KMP_USE_MONITOR
#define KMP_DEFAULT_MONITOR_STKSIZE ((size_t)(64 * 1024))
#define KMP_MIN_MONITOR_WAKEUPS (1) /* min number of times monitor wakes up per second */
#define KMP_MAX_MONITOR_WAKEUPS (1000) /* maximum number of times monitor can wake up per second */
/* Calculate new number of monitor wakeups for a specific block time based on previous monitor_wakeups */
/* Only allow increasing number of wakeups */
#define KMP_WAKEUPS_FROM_BLOCKTIME(blocktime, monitor_wakeups) \
( ((blocktime) == KMP_MAX_BLOCKTIME) ? (monitor_wakeups) : \
((blocktime) == KMP_MIN_BLOCKTIME) ? KMP_MAX_MONITOR_WAKEUPS : \
((monitor_wakeups) > (KMP_BLOCKTIME_MULTIPLIER / (blocktime))) ? (monitor_wakeups) : \
(KMP_BLOCKTIME_MULTIPLIER) / (blocktime) )
/* Calculate number of intervals for a specific block time based on monitor_wakeups */
#define KMP_INTERVALS_FROM_BLOCKTIME(blocktime, monitor_wakeups) \
( ( (blocktime) + (KMP_BLOCKTIME_MULTIPLIER / (monitor_wakeups)) - 1 ) / \
(KMP_BLOCKTIME_MULTIPLIER / (monitor_wakeups)) )
#else
# if KMP_OS_UNIX && (KMP_ARCH_X86 || KMP_ARCH_X86_64)
// HW TSC is used to reduce overhead (clock tick instead of nanosecond).
extern double __kmp_ticks_per_nsec;
# define KMP_NOW() __kmp_hardware_timestamp()
# define KMP_BLOCKTIME_INTERVAL() (__kmp_dflt_blocktime * KMP_USEC_PER_SEC * __kmp_ticks_per_nsec)
# define KMP_BLOCKING(goal, count) ((goal) > KMP_NOW())
# else
// System time is retrieved sporadically while blocking.
extern kmp_uint64 __kmp_now_nsec();
# define KMP_NOW() __kmp_now_nsec()
# define KMP_BLOCKTIME_INTERVAL() (__kmp_dflt_blocktime * KMP_USEC_PER_SEC)
# define KMP_BLOCKING(goal, count) ((count) % 1000 != 0 || (goal) > KMP_NOW())
# endif
#endif // KMP_USE_MONITOR
#define KMP_MIN_STATSCOLS 40
#define KMP_MAX_STATSCOLS 4096
#define KMP_DEFAULT_STATSCOLS 80
#define KMP_MIN_INTERVAL 0
#define KMP_MAX_INTERVAL (INT_MAX-1)
#define KMP_DEFAULT_INTERVAL 0
#define KMP_MIN_CHUNK 1
#define KMP_MAX_CHUNK (INT_MAX-1)
#define KMP_DEFAULT_CHUNK 1
#define KMP_MIN_INIT_WAIT 1
#define KMP_MAX_INIT_WAIT (INT_MAX/2)
#define KMP_DEFAULT_INIT_WAIT 2048U
#define KMP_MIN_NEXT_WAIT 1
#define KMP_MAX_NEXT_WAIT (INT_MAX/2)
#define KMP_DEFAULT_NEXT_WAIT 1024U
#define KMP_DFLT_DISP_NUM_BUFF 7
#define KMP_MAX_ORDERED 8
#define KMP_MAX_FIELDS 32
#define KMP_MAX_BRANCH_BITS 31
#define KMP_MAX_ACTIVE_LEVELS_LIMIT INT_MAX
#define KMP_MAX_DEFAULT_DEVICE_LIMIT INT_MAX
#define KMP_MAX_TASK_PRIORITY_LIMIT INT_MAX
/* Minimum number of threads before switch to TLS gtid (experimentally determined) */
/* josh TODO: what about OS X* tuning? */
#if KMP_ARCH_X86 || KMP_ARCH_X86_64
# define KMP_TLS_GTID_MIN 5
#else
# define KMP_TLS_GTID_MIN INT_MAX
#endif
#define KMP_MASTER_TID(tid) ( (tid) == 0 )
#define KMP_WORKER_TID(tid) ( (tid) != 0 )
#define KMP_MASTER_GTID(gtid) ( __kmp_tid_from_gtid((gtid)) == 0 )
#define KMP_WORKER_GTID(gtid) ( __kmp_tid_from_gtid((gtid)) != 0 )
#define KMP_UBER_GTID(gtid) \
( \
KMP_DEBUG_ASSERT( (gtid) >= KMP_GTID_MIN ), \
KMP_DEBUG_ASSERT( (gtid) < __kmp_threads_capacity ), \
(gtid) >= 0 && __kmp_root[(gtid)] && __kmp_threads[(gtid)] && \
(__kmp_threads[(gtid)] == __kmp_root[(gtid)]->r.r_uber_thread)\
)
#define KMP_INITIAL_GTID(gtid) ( (gtid) == 0 )
#ifndef TRUE
#define FALSE 0
#define TRUE (! FALSE)
#endif
/* NOTE: all of the following constants must be even */
#if KMP_OS_WINDOWS
# define KMP_INIT_WAIT 64U /* initial number of spin-tests */
# define KMP_NEXT_WAIT 32U /* susequent number of spin-tests */
#elif KMP_OS_CNK
# define KMP_INIT_WAIT 16U /* initial number of spin-tests */
# define KMP_NEXT_WAIT 8U /* susequent number of spin-tests */
#elif KMP_OS_LINUX
# define KMP_INIT_WAIT 1024U /* initial number of spin-tests */
# define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
#elif KMP_OS_DARWIN
/* TODO: tune for KMP_OS_DARWIN */
# define KMP_INIT_WAIT 1024U /* initial number of spin-tests */
# define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
#elif KMP_OS_FREEBSD
/* TODO: tune for KMP_OS_FREEBSD */
# define KMP_INIT_WAIT 1024U /* initial number of spin-tests */
# define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
#elif KMP_OS_NETBSD
/* TODO: tune for KMP_OS_NETBSD */
# define KMP_INIT_WAIT 1024U /* initial number of spin-tests */
# define KMP_NEXT_WAIT 512U /* susequent number of spin-tests */
#endif
#if KMP_ARCH_X86 || KMP_ARCH_X86_64
typedef struct kmp_cpuid {
kmp_uint32 eax;
kmp_uint32 ebx;
kmp_uint32 ecx;
kmp_uint32 edx;
} kmp_cpuid_t;
extern void __kmp_x86_cpuid( int mode, int mode2, struct kmp_cpuid *p );