295 lines
10 KiB
C
295 lines
10 KiB
C
/************************************************************************
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** **
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** The YapTab/YapOr/OPTYap systems **
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** **
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** YapTab extends the Yap Prolog engine to support sequential tabling **
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** YapOr extends the Yap Prolog engine to support or-parallelism **
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** OPTYap extends the Yap Prolog engine to support or-parallel tabling **
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** **
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** **
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** Yap Prolog was developed at University of Porto, Portugal **
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** **
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************************************************************************/
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/***********************
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** Includes **
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***********************/
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#include "Yap.h"
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#if defined(YAPOR) || defined(TABLING)
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#define OPT_MAVAR_STATIC
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#include "Yatom.h"
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#include "YapHeap.h"
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#include <unistd.h>
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#include <signal.h>
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#ifdef YAPOR
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#include "or.macros.h"
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#endif /* YAPOR */
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#ifdef TABLING
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#include "tab.macros.h"
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#elif !defined(YAPOR_COW)
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#include "opt.mavar.h"
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#endif /* TABLING */
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#ifdef YAPOR_COW
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#include "sys/wait.h"
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#endif /* YAPOR_COW */
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/*********************
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** Macros **
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*********************/
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#ifdef USE_PAGES_MALLOC
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#define STRUCTS_PER_PAGE(STR_TYPE) ((Yap_page_size - ADJUST_SIZE(sizeof(struct page_header))) / ADJUST_SIZE(sizeof(STR_TYPE)))
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#define INIT_GLOBAL_PAGE_ENTRY(PG,STR_TYPE) \
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INIT_LOCK(PgEnt_lock(PG)); \
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PgEnt_pages_in_use(PG) = 0; \
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PgEnt_strs_in_use(PG) = 0; \
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PgEnt_strs_per_page(PG) = STRUCTS_PER_PAGE(STR_TYPE); \
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PgEnt_first(PG) = NULL; \
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PgEnt_last(PG) = NULL;
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#define INIT_LOCAL_PAGE_ENTRY(PG,STR_TYPE) \
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PgEnt_pages_in_use(PG) = 0; \
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PgEnt_strs_in_use(PG) = 0; \
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PgEnt_strs_per_page(PG) = STRUCTS_PER_PAGE(STR_TYPE); \
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PgEnt_first(PG) = NULL; \
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PgEnt_last(PG) = NULL;
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#else
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#define INIT_GLOBAL_PAGE_ENTRY(PG,STR_TYPE) PgEnt_strs_in_use(PG) = 0
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#define INIT_LOCAL_PAGE_ENTRY(PG,STR_TYPE) PgEnt_strs_in_use(PG) = 0
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#endif /* USE_PAGES_MALLOC */
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/*******************************
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** Global functions **
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*******************************/
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void Yap_init_global_optyap_data(int max_table_size, int n_workers, int sch_loop, int delay_load) {
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int i;
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/* global data related to memory management */
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#ifdef USE_PAGES_MALLOC
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_alloc, void *);
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_void, void *);
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#endif /* USE_PAGES_MALLOC */
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#ifdef TABLING
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_tab_ent, struct table_entry);
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#if defined(THREADS_FULL_SHARING) || defined(THREADS_CONSUMER_SHARING)
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_sg_ent, struct subgoal_entry);
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#endif
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_sg_fr, struct subgoal_frame);
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_dep_fr, struct dependency_frame);
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_sg_node, struct subgoal_trie_node);
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_sg_hash, struct subgoal_trie_hash);
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_ans_node, struct answer_trie_node);
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_ans_hash, struct answer_trie_hash);
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#if defined(THREADS_FULL_SHARING)
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_ans_ref_node, struct answer_ref_node);
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#endif
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_gt_node, struct global_trie_node);
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_gt_hash, struct global_trie_hash);
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#endif /* TABLING */
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#ifdef YAPOR
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_or_fr, struct or_frame);
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_qg_sol_fr, struct query_goal_solution_frame);
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_qg_ans_fr, struct query_goal_answer_frame);
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#ifdef TABLING
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_susp_fr, struct suspension_frame);
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#endif
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#ifdef TABLING_INNER_CUTS
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_tg_sol_fr, struct table_subgoal_solution_frame);
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INIT_GLOBAL_PAGE_ENTRY(GLOBAL_pages_tg_ans_fr, struct table_subgoal_answer_frame);
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#endif
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#endif /* YAPOR */
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#ifdef YAPOR
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/* global static data */
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GLOBAL_number_workers= n_workers;
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GLOBAL_worker_pid(0) = getpid();
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for (i = 1; i < GLOBAL_number_workers; i++) GLOBAL_worker_pid(i) = 0;
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GLOBAL_scheduler_loop = sch_loop;
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GLOBAL_delayed_release_load = delay_load;
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/* global data related to or-parallelism */
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ALLOC_OR_FRAME(GLOBAL_root_or_fr);
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BITMAP_clear(GLOBAL_bm_present_workers);
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for (i = 0; i < GLOBAL_number_workers; i++)
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BITMAP_insert(GLOBAL_bm_present_workers, i);
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BITMAP_copy(GLOBAL_bm_idle_workers, GLOBAL_bm_present_workers);
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BITMAP_clear(GLOBAL_bm_root_cp_workers);
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BITMAP_clear(GLOBAL_bm_invisible_workers);
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BITMAP_clear(GLOBAL_bm_requestable_workers);
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BITMAP_clear(GLOBAL_bm_executing_workers);
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BITMAP_copy(GLOBAL_bm_finished_workers, GLOBAL_bm_present_workers);
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INIT_LOCK(GLOBAL_locks_bm_idle_workers);
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INIT_LOCK(GLOBAL_locks_bm_root_cp_workers);
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INIT_LOCK(GLOBAL_locks_bm_invisible_workers);
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INIT_LOCK(GLOBAL_locks_bm_requestable_workers);
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INIT_LOCK(GLOBAL_locks_bm_executing_workers);
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INIT_LOCK(GLOBAL_locks_bm_finished_workers);
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#ifdef TABLING_INNER_CUTS
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INIT_LOCK(GLOBAL_locks_bm_pruning_workers);
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#endif /* TABLING_INNER_CUTS */
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GLOBAL_locks_who_locked_heap = MAX_WORKERS;
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INIT_LOCK(GLOBAL_locks_heap_access);
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INIT_LOCK(GLOBAL_locks_alloc_block);
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if (GLOBAL_number_workers == 1)
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GLOBAL_parallel_mode = PARALLEL_MODE_OFF;
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else
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GLOBAL_parallel_mode = PARALLEL_MODE_ON;
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#endif /* YAPOR */
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#ifdef TABLING
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/* global data related to tabling */
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GLOBAL_root_gt = NULL;
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GLOBAL_root_tab_ent = NULL;
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#ifdef LIMIT_TABLING
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if (max_table_size)
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GLOBAL_max_pages = ((max_table_size - 1) * 1024 * 1024 / SHMMAX + 1) * SHMMAX / Yap_page_size;
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else
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GLOBAL_max_pages = -1;
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GLOBAL_first_sg_fr = NULL;
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GLOBAL_last_sg_fr = NULL;
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GLOBAL_check_sg_fr = NULL;
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#endif /* LIMIT_TABLING */
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#ifdef YAPOR
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new_dependency_frame(GLOBAL_root_dep_fr, FALSE, NULL, NULL, NULL, NULL, FALSE, NULL);
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#endif /* YAPOR */
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for (i = 0; i < MAX_TABLE_VARS; i++) {
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CELL *pt = GLOBAL_table_var_enumerator_addr(i);
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RESET_VARIABLE(pt);
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}
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#ifdef TRIE_LOCK_USING_GLOBAL_ARRAY
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for (i = 0; i < TRIE_LOCK_BUCKETS; i++)
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INIT_LOCK(GLOBAL_trie_locks(i));
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#endif /* TRIE_LOCK_USING_GLOBAL_ARRAY */
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#endif /* TABLING */
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return;
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}
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void Yap_init_local_optyap_data(int wid) {
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#if defined(YAPOR_THREADS) || defined(THREADS_CONSUMER_SHARING)
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CACHE_REGS
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#endif /* YAPOR_THREADS || THREADS_CONSUMER_SHARING */
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#if defined(TABLING) && (defined(YAPOR) || defined(THREADS))
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/* local data related to memory management */
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#ifdef YAPOR
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REMOTE_next_free_ans_node(wid) = NULL;
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#elif THREADS
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#ifdef USE_PAGES_MALLOC
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INIT_LOCAL_PAGE_ENTRY(REMOTE_pages_void(wid), void *);
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#endif
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INIT_LOCAL_PAGE_ENTRY(REMOTE_pages_tab_ent(wid), struct table_entry);
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#if defined(THREADS_FULL_SHARING) || defined(THREADS_CONSUMER_SHARING)
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INIT_LOCAL_PAGE_ENTRY(REMOTE_pages_sg_ent(wid), struct subgoal_entry);
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#endif
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INIT_LOCAL_PAGE_ENTRY(REMOTE_pages_sg_fr(wid), struct subgoal_frame);
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INIT_LOCAL_PAGE_ENTRY(REMOTE_pages_dep_fr(wid), struct dependency_frame);
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INIT_LOCAL_PAGE_ENTRY(REMOTE_pages_sg_node(wid), struct subgoal_trie_node);
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INIT_LOCAL_PAGE_ENTRY(REMOTE_pages_sg_hash(wid), struct subgoal_trie_hash);
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INIT_LOCAL_PAGE_ENTRY(REMOTE_pages_ans_node(wid), struct answer_trie_node);
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INIT_LOCAL_PAGE_ENTRY(REMOTE_pages_ans_hash(wid), struct answer_trie_hash);
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#if defined(THREADS_FULL_SHARING)
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INIT_LOCAL_PAGE_ENTRY(REMOTE_pages_ans_ref_node(wid), struct answer_ref_node);
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#endif
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INIT_LOCAL_PAGE_ENTRY(REMOTE_pages_gt_node(wid), struct global_trie_node);
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INIT_LOCAL_PAGE_ENTRY(REMOTE_pages_gt_hash(wid), struct global_trie_hash);
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#endif
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#endif /* TABLING && (YAPOR || THREADS) */
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#ifdef YAPOR
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/* local data related to or-parallelism */
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Set_REMOTE_top_cp(wid, (choiceptr) LOCAL_LocalBase);
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REMOTE_top_or_fr(wid) = GLOBAL_root_or_fr;
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REMOTE_load(wid) = 0;
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REMOTE_share_request(wid) = MAX_WORKERS;
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REMOTE_reply_signal(wid) = worker_ready;
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#ifdef YAPOR_COPY
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INIT_LOCK(REMOTE_lock_signals(wid));
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#endif /* YAPOR_COPY */
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Set_REMOTE_prune_request(wid, NULL);
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INIT_LOCK(REMOTE_lock(wid));
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#endif /* YAPOR */
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#ifdef TABLING
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/* local data related to tabling */
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REMOTE_top_sg_fr(wid) = NULL;
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REMOTE_top_dep_fr(wid) = NULL;
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#ifdef YAPOR
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REMOTE_top_dep_fr(wid) = GLOBAL_root_dep_fr;
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Set_REMOTE_top_cp_on_stack(wid, (choiceptr) LOCAL_LocalBase); /* ??? */
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REMOTE_top_susp_or_fr(wid) = GLOBAL_root_or_fr;
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#endif /* YAPOR */
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#ifdef THREADS_CONSUMER_SHARING
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ThDepFr_terminator(GLOBAL_th_dep_fr(wid)) = 0;
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ThDepFr_next(GLOBAL_th_dep_fr(wid)) = wid;
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ThDepFr_state(GLOBAL_th_dep_fr(wid)) = working;
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INIT_LOCK(ThDepFr_lock(GLOBAL_th_dep_fr(wid)));
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#endif /* THREADS_CONSUMER_SHARING */
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#endif /* TABLING */
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return;
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}
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void Yap_init_root_frames(void) {
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CACHE_REGS
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#ifdef YAPOR
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/* root or frame */
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or_fr_ptr or_fr = GLOBAL_root_or_fr;
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INIT_LOCK(OrFr_lock(or_fr));
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OrFr_alternative(or_fr) = NULL;
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BITMAP_copy(OrFr_members(or_fr), GLOBAL_bm_present_workers);
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SetOrFr_node(or_fr, (choiceptr) LOCAL_LocalBase);
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OrFr_nearest_livenode(or_fr) = NULL;
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OrFr_depth(or_fr) = 0;
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Set_OrFr_pend_prune_cp(or_fr, NULL);
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OrFr_nearest_leftnode(or_fr) = or_fr;
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OrFr_qg_solutions(or_fr) = NULL;
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#ifdef TABLING_INNER_CUTS
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OrFr_tg_solutions(or_fr) = NULL;
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#endif /* TABLING_INNER_CUTS */
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#ifdef TABLING
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OrFr_owners(or_fr) = GLOBAL_number_workers;
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OrFr_next_on_stack(or_fr) = NULL;
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OrFr_suspensions(or_fr) = NULL;
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OrFr_nearest_suspnode(or_fr) = or_fr;
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#endif /* TABLING */
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OrFr_next(or_fr) = NULL;
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#endif /* YAPOR */
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#ifdef TABLING
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/* root global trie node */
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new_global_trie_node(GLOBAL_root_gt, 0, NULL, NULL, NULL);
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/* root dependency frame */
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#ifdef YAPOR
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DepFr_cons_cp(GLOBAL_root_dep_fr) = B; /* with YAPOR, at that point, LOCAL_top_dep_fr shouldn't be the same as GLOBAL_root_dep_fr ? */
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#else
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new_dependency_frame(LOCAL_top_dep_fr, FALSE, NULL, NULL, B, NULL, FALSE, NULL);
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#endif /* YAPOR */
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#endif /* TABLING */
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}
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void itos(int i, char *s) {
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int n,r,j;
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n = 10;
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while (n <= i) n *= 10;
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j = 0;
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while (n > 1) {
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n = n / 10;
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r = i / n;
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i = i - r * n;
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s[j++] = r + '0';
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}
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s[j] = 0;
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return;
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}
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#endif /* YAPOR || TABLING */
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