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kmp_ftn_entry.h
1497 lines (1356 loc) · 41.5 KB
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kmp_ftn_entry.h
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/*
* kmp_ftn_entry.h -- Fortran entry linkage support for OpenMP.
*/
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef FTN_STDCALL
#error The support file kmp_ftn_entry.h should not be compiled by itself.
#endif
#ifdef KMP_STUB
#include "kmp_stub.h"
#endif
#include "kmp_i18n.h"
#if OMP_50_ENABLED
// For affinity format functions
#include "kmp_io.h"
#include "kmp_str.h"
#endif
#if OMPT_SUPPORT
#include "ompt-specific.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
/* For compatibility with the Gnu/MS Open MP codegen, omp_set_num_threads(),
* omp_set_nested(), and omp_set_dynamic() [in lowercase on MS, and w/o
* a trailing underscore on Linux* OS] take call by value integer arguments.
* + omp_set_max_active_levels()
* + omp_set_schedule()
*
* For backward compatibility with 9.1 and previous Intel compiler, these
* entry points take call by reference integer arguments. */
#ifdef KMP_GOMP_COMPAT
#if (KMP_FTN_ENTRIES == KMP_FTN_PLAIN) || (KMP_FTN_ENTRIES == KMP_FTN_UPPER)
#define PASS_ARGS_BY_VALUE 1
#endif
#endif
#if KMP_OS_WINDOWS
#if (KMP_FTN_ENTRIES == KMP_FTN_PLAIN) || (KMP_FTN_ENTRIES == KMP_FTN_APPEND)
#define PASS_ARGS_BY_VALUE 1
#endif
#endif
// This macro helps to reduce code duplication.
#ifdef PASS_ARGS_BY_VALUE
#define KMP_DEREF
#else
#define KMP_DEREF *
#endif
void FTN_STDCALL FTN_SET_STACKSIZE(int KMP_DEREF arg) {
#ifdef KMP_STUB
__kmps_set_stacksize(KMP_DEREF arg);
#else
// __kmp_aux_set_stacksize initializes the library if needed
__kmp_aux_set_stacksize((size_t)KMP_DEREF arg);
#endif
}
void FTN_STDCALL FTN_SET_STACKSIZE_S(size_t KMP_DEREF arg) {
#ifdef KMP_STUB
__kmps_set_stacksize(KMP_DEREF arg);
#else
// __kmp_aux_set_stacksize initializes the library if needed
__kmp_aux_set_stacksize(KMP_DEREF arg);
#endif
}
int FTN_STDCALL FTN_GET_STACKSIZE(void) {
#ifdef KMP_STUB
return __kmps_get_stacksize();
#else
if (!__kmp_init_serial) {
__kmp_serial_initialize();
}
return (int)__kmp_stksize;
#endif
}
size_t FTN_STDCALL FTN_GET_STACKSIZE_S(void) {
#ifdef KMP_STUB
return __kmps_get_stacksize();
#else
if (!__kmp_init_serial) {
__kmp_serial_initialize();
}
return __kmp_stksize;
#endif
}
void FTN_STDCALL FTN_SET_BLOCKTIME(int KMP_DEREF arg) {
#ifdef KMP_STUB
__kmps_set_blocktime(KMP_DEREF arg);
#else
int gtid, tid;
kmp_info_t *thread;
gtid = __kmp_entry_gtid();
tid = __kmp_tid_from_gtid(gtid);
thread = __kmp_thread_from_gtid(gtid);
__kmp_aux_set_blocktime(KMP_DEREF arg, thread, tid);
#endif
}
int FTN_STDCALL FTN_GET_BLOCKTIME(void) {
#ifdef KMP_STUB
return __kmps_get_blocktime();
#else
int gtid, tid;
kmp_info_t *thread;
kmp_team_p *team;
gtid = __kmp_entry_gtid();
tid = __kmp_tid_from_gtid(gtid);
thread = __kmp_thread_from_gtid(gtid);
team = __kmp_threads[gtid]->th.th_team;
/* These must match the settings used in __kmp_wait_sleep() */
if (__kmp_dflt_blocktime == KMP_MAX_BLOCKTIME) {
KF_TRACE(10, ("kmp_get_blocktime: T#%d(%d:%d), blocktime=%d\n", gtid,
team->t.t_id, tid, KMP_MAX_BLOCKTIME));
return KMP_MAX_BLOCKTIME;
}
#ifdef KMP_ADJUST_BLOCKTIME
else if (__kmp_zero_bt && !get__bt_set(team, tid)) {
KF_TRACE(10, ("kmp_get_blocktime: T#%d(%d:%d), blocktime=%d\n", gtid,
team->t.t_id, tid, 0));
return 0;
}
#endif /* KMP_ADJUST_BLOCKTIME */
else {
KF_TRACE(10, ("kmp_get_blocktime: T#%d(%d:%d), blocktime=%d\n", gtid,
team->t.t_id, tid, get__blocktime(team, tid)));
return get__blocktime(team, tid);
}
#endif
}
void FTN_STDCALL FTN_SET_LIBRARY_SERIAL(void) {
#ifdef KMP_STUB
__kmps_set_library(library_serial);
#else
// __kmp_user_set_library initializes the library if needed
__kmp_user_set_library(library_serial);
#endif
}
void FTN_STDCALL FTN_SET_LIBRARY_TURNAROUND(void) {
#ifdef KMP_STUB
__kmps_set_library(library_turnaround);
#else
// __kmp_user_set_library initializes the library if needed
__kmp_user_set_library(library_turnaround);
#endif
}
void FTN_STDCALL FTN_SET_LIBRARY_THROUGHPUT(void) {
#ifdef KMP_STUB
__kmps_set_library(library_throughput);
#else
// __kmp_user_set_library initializes the library if needed
__kmp_user_set_library(library_throughput);
#endif
}
void FTN_STDCALL FTN_SET_LIBRARY(int KMP_DEREF arg) {
#ifdef KMP_STUB
__kmps_set_library(KMP_DEREF arg);
#else
enum library_type lib;
lib = (enum library_type)KMP_DEREF arg;
// __kmp_user_set_library initializes the library if needed
__kmp_user_set_library(lib);
#endif
}
int FTN_STDCALL FTN_GET_LIBRARY(void) {
#ifdef KMP_STUB
return __kmps_get_library();
#else
if (!__kmp_init_serial) {
__kmp_serial_initialize();
}
return ((int)__kmp_library);
#endif
}
void FTN_STDCALL FTN_SET_DISP_NUM_BUFFERS(int KMP_DEREF arg) {
#ifdef KMP_STUB
; // empty routine
#else
// ignore after initialization because some teams have already
// allocated dispatch buffers
if (__kmp_init_serial == 0 && (KMP_DEREF arg) > 0)
__kmp_dispatch_num_buffers = KMP_DEREF arg;
#endif
}
int FTN_STDCALL FTN_SET_AFFINITY(void **mask) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
return -1;
#else
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
return __kmp_aux_set_affinity(mask);
#endif
}
int FTN_STDCALL FTN_GET_AFFINITY(void **mask) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
return -1;
#else
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
return __kmp_aux_get_affinity(mask);
#endif
}
int FTN_STDCALL FTN_GET_AFFINITY_MAX_PROC(void) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
return 0;
#else
// We really only NEED serial initialization here.
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
return __kmp_aux_get_affinity_max_proc();
#endif
}
void FTN_STDCALL FTN_CREATE_AFFINITY_MASK(void **mask) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
*mask = NULL;
#else
// We really only NEED serial initialization here.
kmp_affin_mask_t *mask_internals;
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
mask_internals = __kmp_affinity_dispatch->allocate_mask();
KMP_CPU_ZERO(mask_internals);
*mask = mask_internals;
#endif
}
void FTN_STDCALL FTN_DESTROY_AFFINITY_MASK(void **mask) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
// Nothing
#else
// We really only NEED serial initialization here.
kmp_affin_mask_t *mask_internals;
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
if (__kmp_env_consistency_check) {
if (*mask == NULL) {
KMP_FATAL(AffinityInvalidMask, "kmp_destroy_affinity_mask");
}
}
mask_internals = (kmp_affin_mask_t *)(*mask);
__kmp_affinity_dispatch->deallocate_mask(mask_internals);
*mask = NULL;
#endif
}
int FTN_STDCALL FTN_SET_AFFINITY_MASK_PROC(int KMP_DEREF proc, void **mask) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
return -1;
#else
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
return __kmp_aux_set_affinity_mask_proc(KMP_DEREF proc, mask);
#endif
}
int FTN_STDCALL FTN_UNSET_AFFINITY_MASK_PROC(int KMP_DEREF proc, void **mask) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
return -1;
#else
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
return __kmp_aux_unset_affinity_mask_proc(KMP_DEREF proc, mask);
#endif
}
int FTN_STDCALL FTN_GET_AFFINITY_MASK_PROC(int KMP_DEREF proc, void **mask) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
return -1;
#else
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
return __kmp_aux_get_affinity_mask_proc(KMP_DEREF proc, mask);
#endif
}
/* ------------------------------------------------------------------------ */
/* sets the requested number of threads for the next parallel region */
void FTN_STDCALL KMP_EXPAND_NAME(FTN_SET_NUM_THREADS)(int KMP_DEREF arg) {
#ifdef KMP_STUB
// Nothing.
#else
__kmp_set_num_threads(KMP_DEREF arg, __kmp_entry_gtid());
#endif
}
/* returns the number of threads in current team */
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_NUM_THREADS)(void) {
#ifdef KMP_STUB
return 1;
#else
// __kmpc_bound_num_threads initializes the library if needed
return __kmpc_bound_num_threads(NULL);
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_MAX_THREADS)(void) {
#ifdef KMP_STUB
return 1;
#else
int gtid;
kmp_info_t *thread;
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
gtid = __kmp_entry_gtid();
thread = __kmp_threads[gtid];
// return thread -> th.th_team -> t.t_current_task[
// thread->th.th_info.ds.ds_tid ] -> icvs.nproc;
return thread->th.th_current_task->td_icvs.nproc;
#endif
}
#if OMP_50_ENABLED
int FTN_STDCALL FTN_CONTROL_TOOL(int command, int modifier, void *arg) {
#if defined(KMP_STUB) || !OMPT_SUPPORT
return -2;
#else
OMPT_STORE_RETURN_ADDRESS(__kmp_entry_gtid());
if (!TCR_4(__kmp_init_middle)) {
return -2;
}
kmp_info_t *this_thr = __kmp_threads[__kmp_entry_gtid()];
ompt_task_info_t *parent_task_info = OMPT_CUR_TASK_INFO(this_thr);
parent_task_info->frame.enter_frame.ptr = OMPT_GET_FRAME_ADDRESS(0);
int ret = __kmp_control_tool(command, modifier, arg);
parent_task_info->frame.enter_frame.ptr = 0;
return ret;
#endif
}
/* OpenMP 5.0 Memory Management support */
void FTN_STDCALL FTN_SET_DEFAULT_ALLOCATOR(const omp_allocator_t *allocator) {
#ifndef KMP_STUB
__kmpc_set_default_allocator(__kmp_entry_gtid(), allocator);
#endif
}
const omp_allocator_t *FTN_STDCALL FTN_GET_DEFAULT_ALLOCATOR(void) {
#ifdef KMP_STUB
return NULL;
#else
return __kmpc_get_default_allocator(__kmp_entry_gtid());
#endif
}
void *FTN_STDCALL FTN_ALLOC(size_t size, const omp_allocator_t *allocator) {
#ifdef KMP_STUB
return malloc(size);
#else
return __kmpc_alloc(__kmp_entry_gtid(), size, allocator);
#endif
}
void FTN_STDCALL FTN_FREE(void *ptr, const omp_allocator_t *allocator) {
#ifdef KMP_STUB
free(ptr);
#else
__kmpc_free(__kmp_entry_gtid(), ptr, allocator);
#endif
}
/* OpenMP 5.0 affinity format support */
#ifndef KMP_STUB
static void __kmp_fortran_strncpy_truncate(char *buffer, size_t buf_size,
char const *csrc, size_t csrc_size) {
size_t capped_src_size = csrc_size;
if (csrc_size >= buf_size) {
capped_src_size = buf_size - 1;
}
KMP_STRNCPY_S(buffer, buf_size, csrc, capped_src_size);
if (csrc_size >= buf_size) {
KMP_DEBUG_ASSERT(buffer[buf_size - 1] == '\0');
buffer[buf_size - 1] = csrc[buf_size - 1];
} else {
for (size_t i = csrc_size; i < buf_size; ++i)
buffer[i] = ' ';
}
}
// Convert a Fortran string to a C string by adding null byte
class ConvertedString {
char *buf;
kmp_info_t *th;
public:
ConvertedString(char const *fortran_str, size_t size) {
th = __kmp_get_thread();
buf = (char *)__kmp_thread_malloc(th, size + 1);
KMP_STRNCPY_S(buf, size + 1, fortran_str, size);
buf[size] = '\0';
}
~ConvertedString() { __kmp_thread_free(th, buf); }
const char *get() const { return buf; }
};
#endif // KMP_STUB
/*
* Set the value of the affinity-format-var ICV on the current device to the
* format specified in the argument.
*/
void FTN_STDCALL FTN_SET_AFFINITY_FORMAT(char const *format, size_t size) {
#ifdef KMP_STUB
return;
#else
if (!__kmp_init_serial) {
__kmp_serial_initialize();
}
ConvertedString cformat(format, size);
// Since the __kmp_affinity_format variable is a C string, do not
// use the fortran strncpy function
__kmp_strncpy_truncate(__kmp_affinity_format, KMP_AFFINITY_FORMAT_SIZE,
cformat.get(), KMP_STRLEN(cformat.get()));
#endif
}
/*
* Returns the number of characters required to hold the entire affinity format
* specification (not including null byte character) and writes the value of the
* affinity-format-var ICV on the current device to buffer. If the return value
* is larger than size, the affinity format specification is truncated.
*/
size_t FTN_STDCALL FTN_GET_AFFINITY_FORMAT(char *buffer, size_t size) {
#ifdef KMP_STUB
return 0;
#else
size_t format_size;
if (!__kmp_init_serial) {
__kmp_serial_initialize();
}
format_size = KMP_STRLEN(__kmp_affinity_format);
if (buffer && size) {
__kmp_fortran_strncpy_truncate(buffer, size, __kmp_affinity_format,
format_size);
}
return format_size;
#endif
}
/*
* Prints the thread affinity information of the current thread in the format
* specified by the format argument. If the format is NULL or a zero-length
* string, the value of the affinity-format-var ICV is used.
*/
void FTN_STDCALL FTN_DISPLAY_AFFINITY(char const *format, size_t size) {
#ifdef KMP_STUB
return;
#else
int gtid;
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
gtid = __kmp_get_gtid();
ConvertedString cformat(format, size);
__kmp_aux_display_affinity(gtid, cformat.get());
#endif
}
/*
* Returns the number of characters required to hold the entire affinity format
* specification (not including null byte) and prints the thread affinity
* information of the current thread into the character string buffer with the
* size of size in the format specified by the format argument. If the format is
* NULL or a zero-length string, the value of the affinity-format-var ICV is
* used. The buffer must be allocated prior to calling the routine. If the
* return value is larger than size, the affinity format specification is
* truncated.
*/
size_t FTN_STDCALL FTN_CAPTURE_AFFINITY(char *buffer, char const *format,
size_t buf_size, size_t for_size) {
#if defined(KMP_STUB)
return 0;
#else
int gtid;
size_t num_required;
kmp_str_buf_t capture_buf;
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
gtid = __kmp_get_gtid();
__kmp_str_buf_init(&capture_buf);
ConvertedString cformat(format, for_size);
num_required = __kmp_aux_capture_affinity(gtid, cformat.get(), &capture_buf);
if (buffer && buf_size) {
__kmp_fortran_strncpy_truncate(buffer, buf_size, capture_buf.str,
capture_buf.used);
}
__kmp_str_buf_free(&capture_buf);
return num_required;
#endif
}
#endif /* OMP_50_ENABLED */
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_THREAD_NUM)(void) {
#ifdef KMP_STUB
return 0;
#else
int gtid;
#if KMP_OS_DARWIN || KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD || \
KMP_OS_HURD
gtid = __kmp_entry_gtid();
#elif KMP_OS_WINDOWS
if (!__kmp_init_parallel ||
(gtid = (int)((kmp_intptr_t)TlsGetValue(__kmp_gtid_threadprivate_key))) ==
0) {
// Either library isn't initialized or thread is not registered
// 0 is the correct TID in this case
return 0;
}
--gtid; // We keep (gtid+1) in TLS
#elif KMP_OS_LINUX
#ifdef KMP_TDATA_GTID
if (__kmp_gtid_mode >= 3) {
if ((gtid = __kmp_gtid) == KMP_GTID_DNE) {
return 0;
}
} else {
#endif
if (!__kmp_init_parallel ||
(gtid = (kmp_intptr_t)(
pthread_getspecific(__kmp_gtid_threadprivate_key))) == 0) {
return 0;
}
--gtid;
#ifdef KMP_TDATA_GTID
}
#endif
#else
#error Unknown or unsupported OS
#endif
return __kmp_tid_from_gtid(gtid);
#endif
}
int FTN_STDCALL FTN_GET_NUM_KNOWN_THREADS(void) {
#ifdef KMP_STUB
return 1;
#else
if (!__kmp_init_serial) {
__kmp_serial_initialize();
}
/* NOTE: this is not syncronized, so it can change at any moment */
/* NOTE: this number also includes threads preallocated in hot-teams */
return TCR_4(__kmp_nth);
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_NUM_PROCS)(void) {
#ifdef KMP_STUB
return 1;
#else
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
return __kmp_avail_proc;
#endif
}
void FTN_STDCALL KMP_EXPAND_NAME(FTN_SET_NESTED)(int KMP_DEREF flag) {
#ifdef KMP_STUB
__kmps_set_nested(KMP_DEREF flag);
#else
kmp_info_t *thread;
/* For the thread-private internal controls implementation */
thread = __kmp_entry_thread();
__kmp_save_internal_controls(thread);
set__nested(thread, ((KMP_DEREF flag) ? TRUE : FALSE));
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_NESTED)(void) {
#ifdef KMP_STUB
return __kmps_get_nested();
#else
kmp_info_t *thread;
thread = __kmp_entry_thread();
return get__nested(thread);
#endif
}
void FTN_STDCALL KMP_EXPAND_NAME(FTN_SET_DYNAMIC)(int KMP_DEREF flag) {
#ifdef KMP_STUB
__kmps_set_dynamic(KMP_DEREF flag ? TRUE : FALSE);
#else
kmp_info_t *thread;
/* For the thread-private implementation of the internal controls */
thread = __kmp_entry_thread();
// !!! What if foreign thread calls it?
__kmp_save_internal_controls(thread);
set__dynamic(thread, KMP_DEREF flag ? TRUE : FALSE);
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_DYNAMIC)(void) {
#ifdef KMP_STUB
return __kmps_get_dynamic();
#else
kmp_info_t *thread;
thread = __kmp_entry_thread();
return get__dynamic(thread);
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_IN_PARALLEL)(void) {
#ifdef KMP_STUB
return 0;
#else
kmp_info_t *th = __kmp_entry_thread();
#if OMP_40_ENABLED
if (th->th.th_teams_microtask) {
// AC: r_in_parallel does not work inside teams construct where real
// parallel is inactive, but all threads have same root, so setting it in
// one team affects other teams.
// The solution is to use per-team nesting level
return (th->th.th_team->t.t_active_level ? 1 : 0);
} else
#endif /* OMP_40_ENABLED */
return (th->th.th_root->r.r_in_parallel ? FTN_TRUE : FTN_FALSE);
#endif
}
void FTN_STDCALL KMP_EXPAND_NAME(FTN_SET_SCHEDULE)(kmp_sched_t KMP_DEREF kind,
int KMP_DEREF modifier) {
#ifdef KMP_STUB
__kmps_set_schedule(KMP_DEREF kind, KMP_DEREF modifier);
#else
/* TO DO: For the per-task implementation of the internal controls */
__kmp_set_schedule(__kmp_entry_gtid(), KMP_DEREF kind, KMP_DEREF modifier);
#endif
}
void FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_SCHEDULE)(kmp_sched_t *kind,
int *modifier) {
#ifdef KMP_STUB
__kmps_get_schedule(kind, modifier);
#else
/* TO DO: For the per-task implementation of the internal controls */
__kmp_get_schedule(__kmp_entry_gtid(), kind, modifier);
#endif
}
void FTN_STDCALL KMP_EXPAND_NAME(FTN_SET_MAX_ACTIVE_LEVELS)(int KMP_DEREF arg) {
#ifdef KMP_STUB
// Nothing.
#else
/* TO DO: We want per-task implementation of this internal control */
__kmp_set_max_active_levels(__kmp_entry_gtid(), KMP_DEREF arg);
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_MAX_ACTIVE_LEVELS)(void) {
#ifdef KMP_STUB
return 0;
#else
/* TO DO: We want per-task implementation of this internal control */
return __kmp_get_max_active_levels(__kmp_entry_gtid());
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_ACTIVE_LEVEL)(void) {
#ifdef KMP_STUB
return 0; // returns 0 if it is called from the sequential part of the program
#else
/* TO DO: For the per-task implementation of the internal controls */
return __kmp_entry_thread()->th.th_team->t.t_active_level;
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_LEVEL)(void) {
#ifdef KMP_STUB
return 0; // returns 0 if it is called from the sequential part of the program
#else
/* TO DO: For the per-task implementation of the internal controls */
return __kmp_entry_thread()->th.th_team->t.t_level;
#endif
}
int FTN_STDCALL
KMP_EXPAND_NAME(FTN_GET_ANCESTOR_THREAD_NUM)(int KMP_DEREF level) {
#ifdef KMP_STUB
return (KMP_DEREF level) ? (-1) : (0);
#else
return __kmp_get_ancestor_thread_num(__kmp_entry_gtid(), KMP_DEREF level);
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_TEAM_SIZE)(int KMP_DEREF level) {
#ifdef KMP_STUB
return (KMP_DEREF level) ? (-1) : (1);
#else
return __kmp_get_team_size(__kmp_entry_gtid(), KMP_DEREF level);
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_THREAD_LIMIT)(void) {
#ifdef KMP_STUB
return 1; // TO DO: clarify whether it returns 1 or 0?
#else
int gtid;
kmp_info_t *thread;
if (!__kmp_init_serial) {
__kmp_serial_initialize();
}
gtid = __kmp_entry_gtid();
thread = __kmp_threads[gtid];
return thread->th.th_current_task->td_icvs.thread_limit;
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_IN_FINAL)(void) {
#ifdef KMP_STUB
return 0; // TO DO: clarify whether it returns 1 or 0?
#else
if (!TCR_4(__kmp_init_parallel)) {
return 0;
}
return __kmp_entry_thread()->th.th_current_task->td_flags.final;
#endif
}
#if OMP_40_ENABLED
kmp_proc_bind_t FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_PROC_BIND)(void) {
#ifdef KMP_STUB
return __kmps_get_proc_bind();
#else
return get__proc_bind(__kmp_entry_thread());
#endif
}
#if OMP_45_ENABLED
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_NUM_PLACES)(void) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
return 0;
#else
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
if (!KMP_AFFINITY_CAPABLE())
return 0;
return __kmp_affinity_num_masks;
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_PLACE_NUM_PROCS)(int place_num) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
return 0;
#else
int i;
int retval = 0;
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
if (!KMP_AFFINITY_CAPABLE())
return 0;
if (place_num < 0 || place_num >= (int)__kmp_affinity_num_masks)
return 0;
kmp_affin_mask_t *mask = KMP_CPU_INDEX(__kmp_affinity_masks, place_num);
KMP_CPU_SET_ITERATE(i, mask) {
if ((!KMP_CPU_ISSET(i, __kmp_affin_fullMask)) ||
(!KMP_CPU_ISSET(i, mask))) {
continue;
}
++retval;
}
return retval;
#endif
}
void FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_PLACE_PROC_IDS)(int place_num,
int *ids) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
// Nothing.
#else
int i, j;
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
if (!KMP_AFFINITY_CAPABLE())
return;
if (place_num < 0 || place_num >= (int)__kmp_affinity_num_masks)
return;
kmp_affin_mask_t *mask = KMP_CPU_INDEX(__kmp_affinity_masks, place_num);
j = 0;
KMP_CPU_SET_ITERATE(i, mask) {
if ((!KMP_CPU_ISSET(i, __kmp_affin_fullMask)) ||
(!KMP_CPU_ISSET(i, mask))) {
continue;
}
ids[j++] = i;
}
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_PLACE_NUM)(void) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
return -1;
#else
int gtid;
kmp_info_t *thread;
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
if (!KMP_AFFINITY_CAPABLE())
return -1;
gtid = __kmp_entry_gtid();
thread = __kmp_thread_from_gtid(gtid);
if (thread->th.th_current_place < 0)
return -1;
return thread->th.th_current_place;
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_PARTITION_NUM_PLACES)(void) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
return 0;
#else
int gtid, num_places, first_place, last_place;
kmp_info_t *thread;
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
if (!KMP_AFFINITY_CAPABLE())
return 0;
gtid = __kmp_entry_gtid();
thread = __kmp_thread_from_gtid(gtid);
first_place = thread->th.th_first_place;
last_place = thread->th.th_last_place;
if (first_place < 0 || last_place < 0)
return 0;
if (first_place <= last_place)
num_places = last_place - first_place + 1;
else
num_places = __kmp_affinity_num_masks - first_place + last_place + 1;
return num_places;
#endif
}
void
FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_PARTITION_PLACE_NUMS)(int *place_nums) {
#if defined(KMP_STUB) || !KMP_AFFINITY_SUPPORTED
// Nothing.
#else
int i, gtid, place_num, first_place, last_place, start, end;
kmp_info_t *thread;
if (!TCR_4(__kmp_init_middle)) {
__kmp_middle_initialize();
}
if (!KMP_AFFINITY_CAPABLE())
return;
gtid = __kmp_entry_gtid();
thread = __kmp_thread_from_gtid(gtid);
first_place = thread->th.th_first_place;
last_place = thread->th.th_last_place;
if (first_place < 0 || last_place < 0)
return;
if (first_place <= last_place) {
start = first_place;
end = last_place;
} else {
start = last_place;
end = first_place;
}
for (i = 0, place_num = start; place_num <= end; ++place_num, ++i) {
place_nums[i] = place_num;
}
#endif
}
#endif
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_NUM_TEAMS)(void) {
#ifdef KMP_STUB
return 1;
#else
return __kmp_aux_get_num_teams();
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_TEAM_NUM)(void) {
#ifdef KMP_STUB
return 0;
#else
return __kmp_aux_get_team_num();
#endif
}
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_DEFAULT_DEVICE)(void) {
#if KMP_MIC || KMP_OS_DARWIN || defined(KMP_STUB)
return 0;
#else
return __kmp_entry_thread()->th.th_current_task->td_icvs.default_device;
#endif
}
void FTN_STDCALL KMP_EXPAND_NAME(FTN_SET_DEFAULT_DEVICE)(int KMP_DEREF arg) {
#if KMP_MIC || KMP_OS_DARWIN || defined(KMP_STUB)
// Nothing.
#else
__kmp_entry_thread()->th.th_current_task->td_icvs.default_device =
KMP_DEREF arg;
#endif
}
// Get number of NON-HOST devices.
// libomptarget, if loaded, provides this function in api.cpp.
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_NUM_DEVICES)(void) KMP_WEAK_ATTRIBUTE;
int FTN_STDCALL KMP_EXPAND_NAME(FTN_GET_NUM_DEVICES)(void) {
#if KMP_MIC || KMP_OS_DARWIN || KMP_OS_WINDOWS || defined(KMP_STUB)
return 0;
#else
int (*fptr)();
if ((*(void **)(&fptr) = dlsym(RTLD_DEFAULT, "_Offload_number_of_devices"))) {
return (*fptr)();
} else if ((*(void **)(&fptr) = dlsym(RTLD_NEXT, "omp_get_num_devices"))) {
return (*fptr)();
} else { // liboffload & libomptarget don't exist
return 0;
}
#endif // KMP_MIC || KMP_OS_DARWIN || KMP_OS_WINDOWS || defined(KMP_STUB)
}
// This function always returns true when called on host device.
// Compilier/libomptarget should handle when it is called inside target region.
int FTN_STDCALL KMP_EXPAND_NAME(FTN_IS_INITIAL_DEVICE)(void) KMP_WEAK_ATTRIBUTE;
int FTN_STDCALL KMP_EXPAND_NAME(FTN_IS_INITIAL_DEVICE)(void) {
return 1; // This is the host
}
#endif // OMP_40_ENABLED
#if OMP_45_ENABLED
// OpenMP 4.5 entries
// libomptarget, if loaded, provides this function
int FTN_STDCALL FTN_GET_INITIAL_DEVICE(void) KMP_WEAK_ATTRIBUTE;
int FTN_STDCALL FTN_GET_INITIAL_DEVICE(void) {
#if KMP_MIC || KMP_OS_DARWIN || KMP_OS_WINDOWS || defined(KMP_STUB)
return KMP_HOST_DEVICE;
#else
int (*fptr)();
if ((*(void **)(&fptr) = dlsym(RTLD_NEXT, "omp_get_initial_device"))) {
return (*fptr)();
} else { // liboffload & libomptarget don't exist
return KMP_HOST_DEVICE;
}
#endif
}
#if defined(KMP_STUB)
// Entries for stubs library
// As all *target* functions are C-only parameters always passed by value
void *FTN_STDCALL FTN_TARGET_ALLOC(size_t size, int device_num) { return 0; }
void FTN_STDCALL FTN_TARGET_FREE(void *device_ptr, int device_num) {}
int FTN_STDCALL FTN_TARGET_IS_PRESENT(void *ptr, int device_num) { return 0; }
int FTN_STDCALL FTN_TARGET_MEMCPY(void *dst, void *src, size_t length,
size_t dst_offset, size_t src_offset,
int dst_device, int src_device) {
return -1;