/************************************************************************ ** ** ** The YapTab/YapOr/OPTYap systems ** ** ** ** YapTab extends the Yap Prolog engine to support sequential tabling ** ** YapOr extends the Yap Prolog engine to support or-parallelism ** ** OPTYap extends the Yap Prolog engine to support or-parallel tabling ** ** ** ** ** ** Yap Prolog was developed at University of Porto, Portugal ** ** ** ************************************************************************/ /********************** ** Typedefs ** **********************/ typedef double realtime; typedef unsigned long bitmap; #ifdef THREADS /* Threads may not assume addresses are the same at different workers */ static inline choiceptr offset_to_cptr(Int node) { CACHE_REGS return (choiceptr)(LCL0+node); } static inline Int cptr_to_offset(choiceptr node) { CACHE_REGS return (Int)((CELL *)node-LCL0); } static inline choiceptr offset_to_cptr_with_null(Int node) { CACHE_REGS if (node == 0L) return NULL; return (choiceptr)(LCL0+node); } static inline Int cptr_to_offset_with_null(choiceptr node) { CACHE_REGS if (node == NULL) return 0L; return (Int)((CELL *)node-LCL0); } #endif /* THREADS */ /********************************* ** Struct page_header ** *********************************/ typedef struct page_header { volatile int structs_in_use; void *first_free_struct; struct page_header *previous; struct page_header *next; } *pg_hd_ptr; #define PgHd_str_in_use(X) ((X)->structs_in_use) #define PgHd_free_str(X) ((X)->first_free_struct) #define PgHd_previous(X) ((X)->previous) #define PgHd_next(X) ((X)->next) /*************************** ** Struct pages ** ***************************/ struct pages { #ifdef OPTYAP_PAGES_MEMORY_ALLOC_SCHEME #ifdef YAPOR lockvar lock; #endif /* YAPOR */ int structs_per_page; struct page_header *first_free_page; volatile long pages_allocated; #endif /* OPTYAP_PAGES_MEMORY_ALLOC_SCHEME */ volatile long structs_in_use; }; #define Pg_lock(X) ((X).lock) #define Pg_str_per_pg(X) ((X).structs_per_page) #define Pg_free_pg(X) ((X).first_free_page) #define Pg_pg_alloc(X) ((X).pages_allocated) #define Pg_str_in_use(X) ((X).structs_in_use) #define Pg_str_free(X) (Pg_pg_alloc(X) * Pg_str_per_pg(X) - Pg_str_in_use(X)) /********************************** ** Struct global_pages ** **********************************/ struct global_pages { #ifdef LIMIT_TABLING int max_pages; #endif /* LIMIT_TABLING */ struct pages void_pages; #ifdef YAPOR struct pages or_frame_pages; struct pages query_goal_solution_frame_pages; struct pages query_goal_answer_frame_pages; #endif /* YAPOR */ #ifdef TABLING_INNER_CUTS struct pages table_subgoal_solution_frame_pages; struct pages table_subgoal_answer_frame_pages; #endif /* TABLING_INNER_CUTS */ #ifdef TABLING struct pages table_entry_pages; struct pages subgoal_frame_pages; struct pages dependency_frame_pages; struct pages subgoal_trie_node_pages; struct pages answer_trie_node_pages; struct pages global_trie_node_pages; struct pages subgoal_trie_hash_pages; struct pages answer_trie_hash_pages; struct pages global_trie_hash_pages; #endif /* TABLING */ #if defined(YAPOR) && defined(TABLING) struct pages suspension_frame_pages; #endif /* YAPOR && TABLING */ }; /********************************** ** Struct global_locks ** **********************************/ #ifdef YAPOR struct global_locks { lockvar bitmap_idle_workers; lockvar bitmap_root_cp_workers; lockvar bitmap_invisible_workers; lockvar bitmap_requestable_workers; lockvar bitmap_executing_workers; lockvar bitmap_finished_workers; #ifdef TABLING_INNER_CUTS lockvar bitmap_pruning_workers; #endif /* TABLING_INNER_CUTS */ int who_locked_heap; lockvar heap_access; lockvar alloc_block; }; #endif /* YAPOR */ /********************************* * Struct global_optyap_data ** *********************************/ struct global_optyap_data{ /* global data related to memory management */ struct global_pages pages; #ifdef YAPOR /* global static data */ int scheduler_loop; int delayed_release_load; int number_workers; int worker_pid[MAX_WORKERS]; #ifdef YAPOR_COW int master_worker; #endif /* YAPOR_COW */ /* global data related to or-performance */ realtime execution_time; realtime best_execution_times[MAX_BEST_TIMES]; int number_of_executed_goals; char performance_mode; /* PERFORMANCE_OFF / PERFORMANCE_ON / PERFORMANCE_IN_EXECUTION */ /* global data related to or-parallelism */ #if THREADS Int root_choice_point_offset; #else choiceptr root_choice_point; #endif struct or_frame *root_or_frame; bitmap present_workers; volatile bitmap idle_workers; volatile bitmap root_cp_workers; volatile bitmap invisible_workers; volatile bitmap requestable_workers; volatile bitmap executing_workers; volatile bitmap finished_workers; #ifdef TABLING_INNER_CUTS volatile bitmap pruning_workers; #endif /* TABLING_INNER_CUTS */ struct global_locks locks; volatile unsigned int branch[MAX_WORKERS][MAX_BRANCH_DEPTH]; volatile char parallel_execution_mode; /* TRUE / FALSE */ volatile int answers; #endif /* YAPOR */ #ifdef TABLING /* global data related to tabling */ struct global_trie_node *root_global_trie; struct table_entry *root_table_entry; #ifdef LIMIT_TABLING struct subgoal_frame *first_subgoal_frame; struct subgoal_frame *last_subgoal_frame; struct subgoal_frame *check_subgoal_frame; #endif /* LIMIT_TABLING */ struct dependency_frame *root_dependency_frame; CELL table_var_enumerator[MAX_TABLE_VARS]; #ifdef TABLE_LOCK_AT_WRITE_LEVEL lockvar table_lock[TABLE_LOCK_BUCKETS]; #endif /* TABLE_LOCK_AT_WRITE_LEVEL */ #ifdef TIMESTAMP_CHECK long timestamp; #endif /* TIMESTAMP_CHECK */ #endif /* TABLING */ }; #define Yap_max_pages (Yap_optyap_data.pages.max_pages) #define Yap_pages_void (Yap_optyap_data.pages.void_pages) #define Yap_pages_or_fr (Yap_optyap_data.pages.or_frame_pages) #define Yap_pages_qg_sol_fr (Yap_optyap_data.pages.query_goal_solution_frame_pages) #define Yap_pages_qg_ans_fr (Yap_optyap_data.pages.query_goal_answer_frame_pages) #define Yap_pages_tg_sol_fr (Yap_optyap_data.pages.table_subgoal_solution_frame_pages) #define Yap_pages_tg_ans_fr (Yap_optyap_data.pages.table_subgoal_answer_frame_pages) #define Yap_pages_tab_ent (Yap_optyap_data.pages.table_entry_pages) #define Yap_pages_sg_fr (Yap_optyap_data.pages.subgoal_frame_pages) #define Yap_pages_dep_fr (Yap_optyap_data.pages.dependency_frame_pages) #define Yap_pages_sg_node (Yap_optyap_data.pages.subgoal_trie_node_pages) #define Yap_pages_ans_node (Yap_optyap_data.pages.answer_trie_node_pages) #define Yap_pages_gt_node (Yap_optyap_data.pages.global_trie_node_pages) #define Yap_pages_sg_hash (Yap_optyap_data.pages.subgoal_trie_hash_pages) #define Yap_pages_ans_hash (Yap_optyap_data.pages.answer_trie_hash_pages) #define Yap_pages_gt_hash (Yap_optyap_data.pages.global_trie_hash_pages) #define Yap_pages_susp_fr (Yap_optyap_data.pages.suspension_frame_pages) #define Yap_scheduler_loop (Yap_optyap_data.scheduler_loop) #define Yap_delayed_release_load (Yap_optyap_data.delayed_release_load) #define Yap_number_workers (Yap_optyap_data.number_workers) #define Yap_worker_pid(worker) (Yap_optyap_data.worker_pid[worker]) #define Yap_master_worker (Yap_optyap_data.master_worker) #define Yap_execution_time (Yap_optyap_data.execution_time) #define Yap_best_times(time) (Yap_optyap_data.best_execution_times[time]) #define Yap_number_goals (Yap_optyap_data.number_of_executed_goals) #define Yap_performance_mode (Yap_optyap_data.performance_mode) #if THREADS #define Get_Yap_root_cp() offset_to_cptr(Yap_optyap_data.root_choice_point_offset) #define Set_Yap_root_cp(bptr) (Yap_optyap_data.root_choice_point_offset = cptr_to_offset(bptr)) #else #define Yap_root_cp (Yap_optyap_data.root_choice_point) #define Get_Yap_root_cp() (Yap_optyap_data.root_choice_point) #define Set_Yap_root_cp(bptr) (Yap_optyap_data.root_choice_point = (bptr)) #endif #define Yap_root_or_fr (Yap_optyap_data.root_or_frame) #define Yap_bm_present_workers (Yap_optyap_data.present_workers) #define Yap_bm_idle_workers (Yap_optyap_data.idle_workers) #define Yap_bm_root_cp_workers (Yap_optyap_data.root_cp_workers) #define Yap_bm_invisible_workers (Yap_optyap_data.invisible_workers) #define Yap_bm_requestable_workers (Yap_optyap_data.requestable_workers) #define Yap_bm_executing_workers (Yap_optyap_data.executing_workers) #define Yap_bm_finished_workers (Yap_optyap_data.finished_workers) #define Yap_bm_pruning_workers (Yap_optyap_data.pruning_workers) #define Yap_locks_bm_idle_workers (Yap_optyap_data.locks.bitmap_idle_workers) #define Yap_locks_bm_root_cp_workers (Yap_optyap_data.locks.bitmap_root_cp_workers) #define Yap_locks_bm_invisible_workers (Yap_optyap_data.locks.bitmap_invisible_workers) #define Yap_locks_bm_requestable_workers (Yap_optyap_data.locks.bitmap_requestable_workers) #define Yap_locks_bm_executing_workers (Yap_optyap_data.locks.bitmap_executing_workers) #define Yap_locks_bm_finished_workers (Yap_optyap_data.locks.bitmap_finished_workers) #define Yap_locks_bm_pruning_workers (Yap_optyap_data.locks.bitmap_pruning_workers) #define Yap_locks_who_locked_heap (Yap_optyap_data.locks.who_locked_heap) #define Yap_locks_heap_access (Yap_optyap_data.locks.heap_access) #define Yap_locks_alloc_block (Yap_optyap_data.locks.alloc_block) #define Yap_branch(worker, depth) (Yap_optyap_data.branch[worker][depth]) #define Yap_parallel_execution_mode (Yap_optyap_data.parallel_execution_mode) #define Yap_answers (Yap_optyap_data.answers) #define Yap_root_gt (Yap_optyap_data.root_global_trie) #define Yap_root_tab_ent (Yap_optyap_data.root_table_entry) #define Yap_first_sg_fr (Yap_optyap_data.first_subgoal_frame) #define Yap_last_sg_fr (Yap_optyap_data.last_subgoal_frame) #define Yap_check_sg_fr (Yap_optyap_data.check_subgoal_frame) #define Yap_root_dep_fr (Yap_optyap_data.root_dependency_frame) #define Yap_table_var_enumerator(index) (Yap_optyap_data.table_var_enumerator[index]) #define Yap_table_var_enumerator_addr(index) (Yap_optyap_data.table_var_enumerator + (index)) #define Yap_table_lock(index) (Yap_optyap_data.table_lock[index]) #define Yap_timestamp (Yap_optyap_data.timestamp) /*********************************** ** Struct local_signals ** ***********************************/ #ifdef YAPOR struct local_signals{ #if defined(YAPOR_COPY) || defined(THREADS) lockvar lock; volatile enum { Q_idle = 0, trail = 1, global = 2, local = 3, P_idle = 4 } P_fase, Q_fase; #endif /* YAPOR_COPY || THREADS */ volatile enum { no_sharing = 0, sharing = 1, nodes_shared = 2, copy_done = 3, worker_ready = 4 } reply_signal; }; #endif /* YAPOR */ /********************************************************** ** Structs ma_h_inner_struct and ma_hash_entry ** **********************************************************/ #if (defined(TABLING) || !defined(YAPOR_COW)) && defined(MULTI_ASSIGNMENT_VARIABLES) #define MAVARS_HASH_SIZE 512 typedef struct ma_h_entry { CELL* addr; struct ma_h_entry *next; } ma_h_inner_struct; typedef struct { UInt timestmp; struct ma_h_entry val; } ma_hash_entry; #endif /* (TABLING || !YAPOR_COW) && MULTI_ASSIGNMENT_VARIABLES */ /******************************** ** Struct local_data ** ********************************/ struct local_data{ #if defined(YAPOR) || defined(THREADS) lockvar lock; #endif #ifdef YAPOR /* local data related to or-parallelism */ volatile int load; #if THREADS Int top_choice_point_offset; #else choiceptr top_choice_point; #endif struct or_frame *top_or_frame; #if THREADS Int prune_request_offset; #else choiceptr prune_request; #endif volatile int share_request; struct local_signals share_signals; volatile struct { CELL start; CELL end; } global_copy, local_copy, trail_copy; #endif /* YAPOR */ #ifdef TABLING /* local data related to tabling */ struct answer_trie_node *next_free_answer_trie_node; struct subgoal_frame *top_subgoal_frame; struct dependency_frame *top_dependency_frame; #ifdef TABLING_INNER_CUTS choiceptr bottom_pruning_scope; #endif /* TABLING_INNER_CUTS */ #ifdef YAPOR #ifdef THREADS Int top_choice_point_on_stack_offset; #else choiceptr top_choice_point_on_stack; #endif struct or_frame *top_or_frame_with_suspensions; #endif /* YAPOR */ #endif /* TABLING */ #if (defined(TABLING) || !defined(YAPOR_COW)) && defined(MULTI_ASSIGNMENT_VARIABLES) UInt ma_timestamp; ma_h_inner_struct *ma_h_top; ma_hash_entry ma_hash_table[MAVARS_HASH_SIZE]; #endif /* (TABLING || !YAPOR_COW) && MULTI_ASSIGNMENT_VARIABLES */ }; #define LOCAL_lock (LOCAL->lock) #define LOCAL_load (LOCAL->load) #if THREADS #define Get_LOCAL_top_cp() offset_to_cptr(LOCAL->top_choice_point_offset) #define Set_LOCAL_top_cp(cpt) (LOCAL->top_choice_point_offset = cptr_to_offset(cpt)) #else #define LOCAL_top_cp (LOCAL->top_choice_point) #define Get_LOCAL_top_cp() (LOCAL->top_choice_point) #define Set_LOCAL_top_cp(cpt) (LOCAL->top_choice_point = cpt) #endif #define LOCAL_top_or_fr (LOCAL->top_or_frame) #if THREADS #define Get_LOCAL_prune_request() offset_to_cptr_with_null(LOCAL->prune_request_offset) #define Set_LOCAL_prune_request(cpt) (LOCAL->prune_request_offset = cptr_to_offset_with_null(cpt)) #else #define LOCAL_prune_request (LOCAL->prune_request) #define Get_LOCAL_prune_request() (LOCAL->prune_request) #define Set_LOCAL_prune_request(cpt) (LOCAL->prune_request = cpt) #endif #define LOCAL_share_request (LOCAL->share_request) #define LOCAL_reply_signal (LOCAL->share_signals.reply_signal) #define LOCAL_p_fase_signal (LOCAL->share_signals.P_fase) #define LOCAL_q_fase_signal (LOCAL->share_signals.Q_fase) #define LOCAL_lock_signals (LOCAL->share_signals.lock) #define LOCAL_start_global_copy (LOCAL->global_copy.start) #define LOCAL_end_global_copy (LOCAL->global_copy.end) #define LOCAL_start_local_copy (LOCAL->local_copy.start) #define LOCAL_end_local_copy (LOCAL->local_copy.end) #define LOCAL_start_trail_copy (LOCAL->trail_copy.start) #define LOCAL_end_trail_copy (LOCAL->trail_copy.end) #define LOCAL_next_free_ans_node (LOCAL->next_free_answer_trie_node) #define LOCAL_top_sg_fr (LOCAL->top_subgoal_frame) #define LOCAL_top_dep_fr (LOCAL->top_dependency_frame) #define LOCAL_pruning_scope (LOCAL->bottom_pruning_scope) #if THREADS #define Get_LOCAL_top_cp_on_stack() offset_to_cptr(LOCAL->top_choice_point_on_stack_offset) #define Set_LOCAL_top_cp_on_stack(cpt) (LOCAL->top_choice_point_on_stack_offset = cptr_to_offset(cpt)) #else #define LOCAL_top_cp_on_stack (LOCAL->top_choice_point_on_stack) #define Get_LOCAL_top_cp_on_stack() (LOCAL->top_choice_point_on_stack) #define Set_LOCAL_top_cp_on_stack(cpt) (LOCAL->top_choice_point_on_stack = cpt) #endif #define LOCAL_top_susp_or_fr (LOCAL->top_or_frame_with_suspensions) #define LOCAL_ma_timestamp (LOCAL->ma_timestamp) #define LOCAL_ma_h_top (LOCAL->ma_h_top) #define LOCAL_ma_hash_table (LOCAL->ma_hash_table) #define REMOTE_lock(worker) (REMOTE[worker].lock) #define REMOTE_load(worker) (REMOTE[worker].load) #if THREADS #define REMOTE_top_cp(worker) offset_to_cptr(REMOTE[worker].top_choice_point_offset) #define Set_REMOTE_top_cp(worker, bptr) (REMOTE[worker].top_choice_point_offset = cptr_to_offset(bptr)) #else #define REMOTE_top_cp(worker) (REMOTE[worker].top_choice_point) #define Set_REMOTE_top_cp(worker, bptr) (REMOTE[worker].top_choice_point = (bptr)) #endif #define REMOTE_top_or_fr(worker) (REMOTE[worker].top_or_frame) #if THREADS #define Get_REMOTE_prune_request(worker) offset_to_cptr_with_null(REMOTE[worker].prune_request_offset) #define Set_REMOTE_prune_request(worker,cp) (REMOTE[worker].prune_request_offset = cptr_to_offset_with_null(cp)) #else #define REMOTE_prune_request(worker) (REMOTE[worker].prune_request) #define Get_REMOTE_prune_request(worker) (REMOTE[worker].prune_request) #define Set_REMOTE_prune_request(worker,cp) (REMOTE[worker].prune_request = cp) #endif #define REMOTE_share_request(worker) (REMOTE[worker].share_request) #define REMOTE_reply_signal(worker) (REMOTE[worker].share_signals.reply_signal) #define REMOTE_p_fase_signal(worker) (REMOTE[worker].share_signals.P_fase) #define REMOTE_q_fase_signal(worker) (REMOTE[worker].share_signals.Q_fase) #define REMOTE_lock_signals(worker) (REMOTE[worker].share_signals.lock) #define REMOTE_start_global_copy(worker) (REMOTE[worker].global_copy.start) #define REMOTE_end_global_copy(worker) (REMOTE[worker].global_copy.end) #define REMOTE_start_local_copy(worker) (REMOTE[worker].local_copy.start) #define REMOTE_end_local_copy(worker) (REMOTE[worker].local_copy.end) #define REMOTE_start_trail_copy(worker) (REMOTE[worker].trail_copy.start) #define REMOTE_end_trail_copy(worker) (REMOTE[worker].trail_copy.end) #define REMOTE_next_free_ans_node(worker) (REMOTE[worker].next_free_answer_trie_node) #define REMOTE_top_sg_fr(worker) (REMOTE[worker].top_subgoal_frame) #define REMOTE_top_dep_fr(worker) (REMOTE[worker].top_dependency_frame) #define REMOTE_pruning_scope(worker) (REMOTE[worker].bottom_pruning_scope) #if THREADS #define REMOTE_top_cp_on_stack(worker) offset_to_cptr(REMOTE[worker].top_choice_point_on_stack_offset) #define Set_REMOTE_top_cp_on_stack(worker, bptr) (REMOTE[worker].top_choice_point_on_stack_offset = cptr_to_offset(bptr)) #else #define REMOTE_top_cp_on_stack(worker) (REMOTE[worker].top_choice_point_on_stack) #define Set_REMOTE_top_cp_on_stack(worker, bptr) (REMOTE[worker].top_choice_point_on_stack = (bptr)) #endif #define REMOTE_top_susp_or_fr(worker) (REMOTE[worker].top_or_frame_with_suspensions) #ifdef YAPOR #include "or.structs.h" #endif /* YAPOR */ #ifdef TABLING #include "tab.structs.h" #endif /* TABLING */