diff options
Diffstat (limited to 'erts/emulator/beam/erl_db_util.h')
| -rw-r--r-- | erts/emulator/beam/erl_db_util.h | 153 |
1 files changed, 105 insertions, 48 deletions
diff --git a/erts/emulator/beam/erl_db_util.h b/erts/emulator/beam/erl_db_util.h index b30f0580dd..7ce104a84c 100644 --- a/erts/emulator/beam/erl_db_util.h +++ b/erts/emulator/beam/erl_db_util.h @@ -23,6 +23,7 @@ #include "global.h" #include "erl_message.h" +#include "erl_bif_unique.h" /*#define HARDDEBUG 1*/ @@ -74,9 +75,6 @@ typedef struct db_term { */ } DbTerm; -union db_table; -typedef union db_table DbTable; - #define DB_MUST_RESIZE 1 #define DB_NEW_OBJECT 2 #define DB_INC_TRY_GROW 4 @@ -137,43 +135,56 @@ typedef struct db_table_method Eterm slot, Eterm* ret); int (*db_select_chunk)(Process* p, - DbTable* tb, /* [in out] */ + DbTable* tb, /* [in out] */ + Eterm tid, Eterm pattern, Sint chunk_size, int reverse, Eterm* ret); int (*db_select)(Process* p, - DbTable* tb, /* [in out] */ + DbTable* tb, /* [in out] */ + Eterm tid, Eterm pattern, int reverse, Eterm* ret); int (*db_select_delete)(Process* p, - DbTable* tb, /* [in out] */ + DbTable* tb, /* [in out] */ + Eterm tid, Eterm pattern, Eterm* ret); int (*db_select_continue)(Process* p, - DbTable* tb, /* [in out] */ + DbTable* tb, /* [in out] */ Eterm continuation, Eterm* ret); int (*db_select_delete_continue)(Process* p, - DbTable* tb, /* [in out] */ + DbTable* tb, /* [in out] */ Eterm continuation, Eterm* ret); int (*db_select_count)(Process* p, - DbTable* tb, /* [in out] */ + DbTable* tb, /* [in out] */ + Eterm tid, Eterm pattern, Eterm* ret); int (*db_select_count_continue)(Process* p, DbTable* tb, /* [in out] */ Eterm continuation, Eterm* ret); + int (*db_select_replace)(Process* p, + DbTable* tb, /* [in out] */ + Eterm tid, + Eterm pattern, + Eterm* ret); + int (*db_select_replace_continue)(Process* p, + DbTable* tb, /* [in out] */ + Eterm continuation, + Eterm* ret); int (*db_take)(Process *, DbTable *, Eterm, Eterm *); int (*db_delete_all_objects)(Process* p, DbTable* db /* [in out] */ ); int (*db_free_table)(DbTable* db /* [in out] */ ); - int (*db_free_table_continue)(DbTable* db); /* [in out] */ + SWord (*db_free_table_continue)(DbTable* db, SWord reds); void (*db_print)(fmtfn_t to, void* to_arg, @@ -183,7 +194,6 @@ typedef struct db_table_method void (*db_foreach_offheap)(DbTable* db, /* [in out] */ void (*func)(ErlOffHeap *, void *), void *arg); - void (*db_check_table)(DbTable* tb); /* Lookup a dbterm for updating. Return false if not found. */ int (*db_lookup_dbterm)(Process *, DbTable *, Eterm key, Eterm obj, @@ -197,11 +207,30 @@ typedef struct db_table_method } DbTableMethod; typedef struct db_fixation { - Eterm pid; + /* Node in fixed_tabs list */ + struct { + struct db_fixation *next, *prev; + Binary* btid; + } tabs; + + /* Node in fixing_procs tree */ + struct { + struct db_fixation *left, *right, *parent; + int is_red; + Process* p; + } procs; + + /* Number of fixations on table from procs.p + * Protected by table write lock or read lock + fixlock + */ Uint counter; - struct db_fixation *next; } DbFixation; +typedef struct { + DbTable *next; + DbTable *prev; +} DbTableList; + /* * This structure contains data for all different types of database * tables. Note that these fields must match the same fields @@ -211,10 +240,13 @@ typedef struct db_fixation { */ typedef struct db_table_common { - erts_smp_refc_t ref; /* fixation counter */ + erts_smp_refc_t refc; /* reference count of table struct */ + erts_smp_refc_t fix_count;/* fixation counter */ + DbTableList all; + DbTableList owned; #ifdef ERTS_SMP erts_smp_rwmtx_t rwlock; /* rw lock on table */ - erts_smp_mtx_t fixlock; /* Protects fixations,megasec,sec,microsec */ + erts_smp_mtx_t fixlock; /* Protects fixing_procs and time */ int is_thread_safe; /* No fine locking inside table needed */ Uint32 type; /* table type, *read only* after creation */ #endif @@ -223,7 +255,7 @@ typedef struct db_table_common { UWord heir_data; /* To send in ETS-TRANSFER (is_immed or (DbTerm*) */ Uint64 heir_started_interval; /* To further identify the heir */ Eterm the_name; /* an atom */ - Eterm id; /* atom | integer */ + Binary *btid; DbTableMethod* meth; /* table methods */ erts_smp_atomic_t nitems; /* Total number of items in table */ erts_smp_atomic_t memory_size;/* Total memory size. NOTE: in bytes! */ @@ -231,36 +263,35 @@ typedef struct db_table_common { ErtsMonotonicTime monotonic; ErtsMonotonicTime offset; } time; - DbFixation* fixations; /* List of processes who have done safe_fixtable, + DbFixation* fixing_procs; /* Tree of processes who have done safe_fixtable, "local" fixations not included. */ /* All 32-bit fields */ Uint32 status; /* bit masks defined below */ - int slot; /* slot index in meta_main_tab */ int keypos; /* defaults to 1 */ int compress; } DbTableCommon; /* These are status bit patterns */ -#define DB_NORMAL (1 << 0) -#define DB_PRIVATE (1 << 1) -#define DB_PROTECTED (1 << 2) -#define DB_PUBLIC (1 << 3) -#define DB_BAG (1 << 4) -#define DB_SET (1 << 5) -/*#define DB_LHASH (1 << 6)*/ -#define DB_FINE_LOCKED (1 << 7) /* fine grained locking enabled */ -#define DB_DUPLICATE_BAG (1 << 8) -#define DB_ORDERED_SET (1 << 9) -#define DB_DELETE (1 << 10) /* table is being deleted */ -#define DB_FREQ_READ (1 << 11) - -#define ERTS_ETS_TABLE_TYPES (DB_BAG|DB_SET|DB_DUPLICATE_BAG|DB_ORDERED_SET|DB_FINE_LOCKED|DB_FREQ_READ) +#define DB_PRIVATE (1 << 0) +#define DB_PROTECTED (1 << 1) +#define DB_PUBLIC (1 << 2) +#define DB_DELETE (1 << 3) /* table is being deleted */ +#define DB_SET (1 << 4) +#define DB_BAG (1 << 5) +#define DB_DUPLICATE_BAG (1 << 6) +#define DB_ORDERED_SET (1 << 7) +#define DB_FINE_LOCKED (1 << 8) /* write_concurrency */ +#define DB_FREQ_READ (1 << 9) /* read_concurrency */ +#define DB_NAMED_TABLE (1 << 10) + +#define ERTS_ETS_TABLE_TYPES (DB_BAG|DB_SET|DB_DUPLICATE_BAG|DB_ORDERED_SET\ + |DB_FINE_LOCKED|DB_FREQ_READ|DB_NAMED_TABLE) #define IS_HASH_TABLE(Status) (!!((Status) & \ (DB_BAG | DB_SET | DB_DUPLICATE_BAG))) #define IS_TREE_TABLE(Status) (!!((Status) & \ DB_ORDERED_SET)) -#define NFIXED(T) (erts_smp_refc_read(&(T)->common.ref,0)) +#define NFIXED(T) (erts_smp_refc_read(&(T)->common.fix_count,0)) #define IS_FIXED(T) (NFIXED(T) != 0) /* @@ -355,7 +386,8 @@ Eterm db_add_counter(Eterm** hpp, Wterm counter, Eterm incr); Eterm db_match_set_lint(Process *p, Eterm matchexpr, Uint flags); Binary *db_match_set_compile(Process *p, Eterm matchexpr, Uint flags); -void erts_db_match_prog_destructor(Binary *); +int db_match_keeps_key(int keypos, Eterm match, Eterm guard, Eterm body); +int erts_db_match_prog_destructor(Binary *); typedef struct match_prog { ErlHeapFragment *term_save; /* Only if needed, a list of message @@ -456,29 +488,54 @@ Eterm db_format_dmc_err_info(Process *p, DMCErrInfo *ei); void db_free_dmc_err_info(DMCErrInfo *ei); /* Completely free's an error info structure, including all recorded errors */ -Eterm db_make_mp_binary(Process *p, Binary *mp, Eterm **hpp); -/* Convert a match program to a erlang "magic" binary to be returned to userspace, - increments the reference counter. */ -int erts_db_is_compiled_ms(Eterm term); + +ERTS_GLB_INLINE Eterm erts_db_make_match_prog_ref(Process *p, Binary *mp, Eterm **hpp); +ERTS_GLB_INLINE Binary *erts_db_get_match_prog_binary(Eterm term); +ERTS_GLB_INLINE Binary *erts_db_get_match_prog_binary_unchecked(Eterm term); + +#if ERTS_GLB_INLINE_INCL_FUNC_DEF + +/* + * Convert a match program to a "magic" ref to return up to erlang + */ +ERTS_GLB_INLINE Eterm erts_db_make_match_prog_ref(Process *p, Binary *mp, Eterm **hpp) +{ + return erts_mk_magic_ref(hpp, &MSO(p), mp); +} + +ERTS_GLB_INLINE Binary * +erts_db_get_match_prog_binary_unchecked(Eterm term) +{ + Binary *bp = erts_magic_ref2bin(term); + ASSERT(bp->intern.flags & BIN_FLAG_MAGIC); + ASSERT((ERTS_MAGIC_BIN_DESTRUCTOR(bp) == erts_db_match_prog_destructor)); + return bp; +} + +ERTS_GLB_INLINE Binary * +erts_db_get_match_prog_binary(Eterm term) +{ + Binary *bp; + if (!is_internal_magic_ref(term)) + return NULL; + bp = erts_magic_ref2bin(term); + ASSERT(bp->intern.flags & BIN_FLAG_MAGIC); + if (ERTS_MAGIC_BIN_DESTRUCTOR(bp) != erts_db_match_prog_destructor) + return NULL; + return bp; +} + +#endif /* ** Convenience when compiling into Binary structures */ #define IsMatchProgBinary(BP) \ - (((BP)->flags & BIN_FLAG_MAGIC) \ + (((BP)->intern.flags & BIN_FLAG_MAGIC) \ && ERTS_MAGIC_BIN_DESTRUCTOR((BP)) == erts_db_match_prog_destructor) #define Binary2MatchProg(BP) \ (ASSERT(IsMatchProgBinary((BP))), \ ((MatchProg *) ERTS_MAGIC_BIN_DATA((BP)))) -/* -** Debugging -*/ -#ifdef HARDDEBUG -void db_check_tables(void); /* in db.c */ -#define CHECK_TABLES() db_check_tables() -#else -#define CHECK_TABLES() -#endif #endif /* _DB_UTIL_H */ |