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kmp_debugger.cpp
#include "kmp_config.h"
#if USE_DEBUGGER
/*
* kmp_debugger.cpp -- debugger support.
*/
//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "kmp.h"
#include "kmp_lock.h"
#include "kmp_omp.h"
#include "kmp_str.h"
// NOTE: All variable names are known to the debugger, do not change!
#ifdef __cplusplus
extern "C" {
extern kmp_omp_struct_info_t __kmp_omp_debug_struct_info;
} // extern "C"
#endif // __cplusplus
int __kmp_debugging = FALSE; // Boolean whether currently debugging OpenMP RTL.
#define offset_and_size_of(structure, field) \
{ offsetof(structure, field), sizeof(((structure *)NULL)->field) }
#define offset_and_size_not_available \
{ -1, -1 }
#define addr_and_size_of(var) \
{ (kmp_uint64)(&var), sizeof(var) }
#define nthr_buffer_size 1024
static kmp_int32 kmp_omp_nthr_info_buffer[nthr_buffer_size] = {
nthr_buffer_size * sizeof(kmp_int32)};
/* TODO: Check punctuation for various platforms here */
static char func_microtask[] = "__kmp_invoke_microtask";
static char func_fork[] = "__kmpc_fork_call";
static char func_fork_teams[] = "__kmpc_fork_teams";
// Various info about runtime structures: addresses, field offsets, sizes, etc.
kmp_omp_struct_info_t __kmp_omp_debug_struct_info = {
/* Change this only if you make a fundamental data structure change here */
KMP_OMP_VERSION,
/* sanity check. Only should be checked if versions are identical
* This is also used for backward compatibility to get the runtime
* structure size if it the runtime is older than the interface */
sizeof(kmp_omp_struct_info_t),
/* OpenMP RTL version info. */
addr_and_size_of(__kmp_version_major),
addr_and_size_of(__kmp_version_minor),
addr_and_size_of(__kmp_version_build),
addr_and_size_of(__kmp_openmp_version),
{(kmp_uint64)(__kmp_copyright) + KMP_VERSION_MAGIC_LEN,
0}, // Skip magic prefix.
/* Various globals. */
addr_and_size_of(__kmp_threads),
addr_and_size_of(__kmp_root),
addr_and_size_of(__kmp_threads_capacity),
#if KMP_USE_MONITOR
addr_and_size_of(__kmp_monitor),
#endif
#if !KMP_USE_DYNAMIC_LOCK
addr_and_size_of(__kmp_user_lock_table),
#endif
addr_and_size_of(func_microtask),
addr_and_size_of(func_fork),
addr_and_size_of(func_fork_teams),
addr_and_size_of(__kmp_team_counter),
addr_and_size_of(__kmp_task_counter),
addr_and_size_of(kmp_omp_nthr_info_buffer),
sizeof(void *),
OMP_LOCK_T_SIZE < sizeof(void *),
bs_last_barrier,
INITIAL_TASK_DEQUE_SIZE,
// thread structure information
sizeof(kmp_base_info_t),
offset_and_size_of(kmp_base_info_t, th_info),
offset_and_size_of(kmp_base_info_t, th_team),
offset_and_size_of(kmp_base_info_t, th_root),
offset_and_size_of(kmp_base_info_t, th_serial_team),
offset_and_size_of(kmp_base_info_t, th_ident),
offset_and_size_of(kmp_base_info_t, th_spin_here),
offset_and_size_of(kmp_base_info_t, th_next_waiting),
offset_and_size_of(kmp_base_info_t, th_task_team),
offset_and_size_of(kmp_base_info_t, th_current_task),
offset_and_size_of(kmp_base_info_t, th_task_state),
offset_and_size_of(kmp_base_info_t, th_bar),
offset_and_size_of(kmp_bstate_t, b_worker_arrived),
// teams information
offset_and_size_of(kmp_base_info_t, th_teams_microtask),
offset_and_size_of(kmp_base_info_t, th_teams_level),
offset_and_size_of(kmp_teams_size_t, nteams),
offset_and_size_of(kmp_teams_size_t, nth),
// kmp_desc structure (for info field above)
sizeof(kmp_desc_base_t),
offset_and_size_of(kmp_desc_base_t, ds_tid),
offset_and_size_of(kmp_desc_base_t, ds_gtid),
// On Windows* OS, ds_thread contains a thread /handle/, which is not usable,
// while thread /id/ is in ds_thread_id.
#if KMP_OS_WINDOWS
offset_and_size_of(kmp_desc_base_t, ds_thread_id),
#else
offset_and_size_of(kmp_desc_base_t, ds_thread),
#endif
// team structure information
sizeof(kmp_base_team_t),
offset_and_size_of(kmp_base_team_t, t_master_tid),
offset_and_size_of(kmp_base_team_t, t_ident),
offset_and_size_of(kmp_base_team_t, t_parent),
offset_and_size_of(kmp_base_team_t, t_nproc),
offset_and_size_of(kmp_base_team_t, t_threads),
offset_and_size_of(kmp_base_team_t, t_serialized),
offset_and_size_of(kmp_base_team_t, t_id),
offset_and_size_of(kmp_base_team_t, t_pkfn),
offset_and_size_of(kmp_base_team_t, t_task_team),
offset_and_size_of(kmp_base_team_t, t_implicit_task_taskdata),
offset_and_size_of(kmp_base_team_t, t_cancel_request),
offset_and_size_of(kmp_base_team_t, t_bar),
offset_and_size_of(kmp_balign_team_t, b_master_arrived),
offset_and_size_of(kmp_balign_team_t, b_team_arrived),
// root structure information
sizeof(kmp_base_root_t),
offset_and_size_of(kmp_base_root_t, r_root_team),
offset_and_size_of(kmp_base_root_t, r_hot_team),
offset_and_size_of(kmp_base_root_t, r_uber_thread),
offset_and_size_not_available,
// ident structure information
sizeof(ident_t),
offset_and_size_of(ident_t, psource),
offset_and_size_of(ident_t, flags),
// lock structure information
sizeof(kmp_base_queuing_lock_t),
offset_and_size_of(kmp_base_queuing_lock_t, initialized),
offset_and_size_of(kmp_base_queuing_lock_t, location),
offset_and_size_of(kmp_base_queuing_lock_t, tail_id),
offset_and_size_of(kmp_base_queuing_lock_t, head_id),
offset_and_size_of(kmp_base_queuing_lock_t, next_ticket),
offset_and_size_of(kmp_base_queuing_lock_t, now_serving),
offset_and_size_of(kmp_base_queuing_lock_t, owner_id),
offset_and_size_of(kmp_base_queuing_lock_t, depth_locked),
offset_and_size_of(kmp_base_queuing_lock_t, flags),
#if !KMP_USE_DYNAMIC_LOCK
/* Lock table. */
sizeof(kmp_lock_table_t),
offset_and_size_of(kmp_lock_table_t, used),
offset_and_size_of(kmp_lock_table_t, allocated),
offset_and_size_of(kmp_lock_table_t, table),
#endif
// Task team structure information.
sizeof(kmp_base_task_team_t),
offset_and_size_of(kmp_base_task_team_t, tt_threads_data),
offset_and_size_of(kmp_base_task_team_t, tt_found_tasks),
offset_and_size_of(kmp_base_task_team_t, tt_nproc),
offset_and_size_of(kmp_base_task_team_t, tt_unfinished_threads),
offset_and_size_of(kmp_base_task_team_t, tt_active),
// task_data_t.
sizeof(kmp_taskdata_t),
offset_and_size_of(kmp_taskdata_t, td_task_id),
offset_and_size_of(kmp_taskdata_t, td_flags),
offset_and_size_of(kmp_taskdata_t, td_team),
offset_and_size_of(kmp_taskdata_t, td_parent),
offset_and_size_of(kmp_taskdata_t, td_level),
offset_and_size_of(kmp_taskdata_t, td_ident),
offset_and_size_of(kmp_taskdata_t, td_allocated_child_tasks),
offset_and_size_of(kmp_taskdata_t, td_incomplete_child_tasks),
offset_and_size_of(kmp_taskdata_t, td_taskwait_ident),
offset_and_size_of(kmp_taskdata_t, td_taskwait_counter),
offset_and_size_of(kmp_taskdata_t, td_taskwait_thread),
offset_and_size_of(kmp_taskdata_t, td_taskgroup),
offset_and_size_of(kmp_taskgroup_t, count),
offset_and_size_of(kmp_taskgroup_t, cancel_request),
offset_and_size_of(kmp_taskdata_t, td_depnode),
offset_and_size_of(kmp_depnode_list_t, node),
offset_and_size_of(kmp_depnode_list_t, next),
offset_and_size_of(kmp_base_depnode_t, successors),
offset_and_size_of(kmp_base_depnode_t, task),
offset_and_size_of(kmp_base_depnode_t, npredecessors),
offset_and_size_of(kmp_base_depnode_t, nrefs),
offset_and_size_of(kmp_task_t, routine),
// thread_data_t.
sizeof(kmp_thread_data_t),
offset_and_size_of(kmp_base_thread_data_t, td_deque),
offset_and_size_of(kmp_base_thread_data_t, td_deque_size),
offset_and_size_of(kmp_base_thread_data_t, td_deque_head),
offset_and_size_of(kmp_base_thread_data_t, td_deque_tail),
offset_and_size_of(kmp_base_thread_data_t, td_deque_ntasks),
offset_and_size_of(kmp_base_thread_data_t, td_deque_last_stolen),
// The last field.
KMP_OMP_VERSION,
}; // __kmp_omp_debug_struct_info
#undef offset_and_size_of
#undef addr_and_size_of
/* Intel compiler on IA-32 architecture issues a warning "conversion
from "unsigned long long" to "char *" may lose significant bits"
when 64-bit value is assigned to 32-bit pointer. Use this function
to suppress the warning. */
static inline void *__kmp_convert_to_ptr(kmp_uint64 addr) {
#if KMP_COMPILER_ICC || KMP_COMPILER_ICX
#pragma warning(push)
#pragma warning(disable : 810) // conversion from "unsigned long long" to "char
// *" may lose significant bits
#pragma warning(disable : 1195) // conversion from integer to smaller pointer
#endif // KMP_COMPILER_ICC || KMP_COMPILER_ICX
return (void *)addr;
#if KMP_COMPILER_ICC || KMP_COMPILER_ICX
#pragma warning(pop)
#endif // KMP_COMPILER_ICC || KMP_COMPILER_ICX
} // __kmp_convert_to_ptr
static int kmp_location_match(kmp_str_loc_t *loc, kmp_omp_nthr_item_t *item) {
int file_match = 0;
int func_match = 0;
int line_match = 0;
char *file = (char *)__kmp_convert_to_ptr(item->file);
char *func = (char *)__kmp_convert_to_ptr(item->func);
file_match = __kmp_str_fname_match(&loc->fname, file);
func_match =
item->func == 0 // If item->func is NULL, it allows any func name.
|| strcmp(func, "*") == 0 ||
(loc->func != NULL && strcmp(loc->func, func) == 0);
line_match =
item->begin <= loc->line &&
(item->end <= 0 ||
loc->line <= item->end); // if item->end <= 0, it means "end of file".
return (file_match && func_match && line_match);
} // kmp_location_match
int __kmp_omp_num_threads(ident_t const *ident) {
int num_threads = 0;
kmp_omp_nthr_info_t *info = (kmp_omp_nthr_info_t *)__kmp_convert_to_ptr(
__kmp_omp_debug_struct_info.nthr_info.addr);
if (info->num > 0 && info->array != 0) {
kmp_omp_nthr_item_t *items =
(kmp_omp_nthr_item_t *)__kmp_convert_to_ptr(info->array);
kmp_str_loc_t loc = __kmp_str_loc_init(ident->psource, true);
int i;
for (i = 0; i < info->num; ++i) {
if (kmp_location_match(&loc, &items[i])) {
num_threads = items[i].num_threads;
}
}
__kmp_str_loc_free(&loc);
}
return num_threads;
;
} // __kmp_omp_num_threads
#endif /* USE_DEBUGGER */
ident_t
struct ident ident_t
ident
Definition kmp.h:234
ident::psource
char const * psource
Definition kmp.h:244