pike.git/src/mapping.c:595dac77b8e936f5a59300e0b9ba96cbc5a4f10e

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2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 /*\ ||| This file a part of Pike, and is copyright by Fredrik Hubinette ||| Pike is distributed as GPL (General Public License) ||| See the files COPYING and DISCLAIMER for more information. \*/ /**/ #include "global.h" RCSID("$Id: mapping.c,v 1.108 2000/09/30 15:58:30 mast Exp $"); #include "main.h" #include "object.h" #include "mapping.h" #include "svalue.h" #include "array.h" #include "pike_macros.h" #include "error.h" #include "pike_memory.h" #include "dynamic_buffer.h" #include "interpret.h" #include "las.h" #include "gc.h" #include "stralloc.h" #include "security.h" #include "block_alloc.h" #include "opcodes.h" #define AVG_LINK_LENGTH 4 #define MIN_LINK_LENGTH 1 #define MAP_SLOTS(X) ((X)?((X)+((X)>>4)+8):0) struct mapping *first_mapping; struct mapping *gc_internal_mapping = 0; static struct mapping *gc_mark_mapping_pos = 0; #define unlink_mapping_data(M) do{ \ struct mapping_data *md_=(M); \ if(md_->hardlinks) { md_->hardlinks--; md_->valrefs--; } \ free_mapping_data(M); \ }while(0) #define MD_KEYPAIRS(MD, HSIZE) \ ( (struct keypair *)DO_ALIGN( (ptrdiff_t) (((struct mapping_data *)(MD))->hash + HSIZE), ALIGNOF(struct keypair)) ) #define MAPPING_DATA_SIZE(HSIZE, KEYPAIRS) \ (ptrdiff_t)( MD_KEYPAIRS(0, HSIZE) + KEYPAIRS ) #undef EXIT_BLOCK #define EXIT_BLOCK(m) \ INT32 e; \ DO_IF_DEBUG( \ if(m->refs) \ fatal("really free mapping on mapping with nonzero refs.\n"); \ ) \ \ FREE_PROT(m); \ \ unlink_mapping_data(m->data); \ \ if (gc_internal_mapping) { \ if (m == gc_internal_mapping) \ gc_internal_mapping = m->next; \ if (m == gc_mark_mapping_pos) \ gc_mark_mapping_pos = m->next; \ } \ DOUBLEUNLINK(first_mapping, m); \ \ GC_FREE(m); #undef COUNT_OTHER #define COUNT_OTHER() do{ \ struct mapping *m; \ for(m=first_mapping;m;m=m->next) \ { \ num++; \ size+=MAPPING_DATA_SIZE(m->data->hashsize, m->data->num_keypairs); \ } \ }while(0) BLOCK_ALLOC(mapping, 511) #ifdef PIKE_DEBUG /* This function checks that the type field isn't lacking any bits. * It is used for debugging purposes only. */ static void check_mapping_type_fields(struct mapping *m) { INT32 e; struct keypair *k=0,**prev; TYPE_FIELD ind_types, val_types; ind_types=val_types=0; MAPPING_LOOP(m) { val_types |= 1 << k->val.type; ind_types |= 1 << k->ind.type; } if(val_types & ~(m->data->val_types)) fatal("Mapping value types out of order!\n"); if(ind_types & ~(m->data->ind_types)) fatal("Mapping indices types out of order!\n"); } #endif static struct mapping_data empty_data = { 1, 1, 0,0,0,0,0,0 }; /* This function allocates the hash table and svalue space for a mapping * struct. The size is the max number of indices that can fit in the * allocated space. */ static void init_mapping(struct mapping *m, INT32 size) { struct mapping_data *md; char *tmp; ptrdiff_t e; INT32 hashsize; debug_malloc_touch(m); #ifdef PIKE_DEBUG if (Pike_in_gc > GC_PASS_PREPARE && Pike_in_gc < GC_PASS_ZAP_WEAK) fatal("Can't allocate a new mapping_data inside gc.\n"); if(size < 0) fatal("init_mapping with negative value.\n"); #endif if(size) { hashsize=size / AVG_LINK_LENGTH + 1; if(!(hashsize & 1)) hashsize++; e=MAPPING_DATA_SIZE(hashsize, size); md=(struct mapping_data *)xalloc(e); m->data=md; md->hashsize=hashsize; MEMSET((char *)md->hash, 0, sizeof(struct keypair *) * md->hashsize); md->free_list=MD_KEYPAIRS(md, hashsize); for(e=1;e<size;e++) { md->free_list[e-1].next = md->free_list + e; md->free_list[e-1].ind.type=T_INT; md->free_list[e-1].val.type=T_INT; } md->free_list[e-1].next=0; md->free_list[e-1].ind.type=T_INT; md->free_list[e-1].val.type=T_INT; md->ind_types = 0; md->val_types = 0; md->flags = 0; md->size = 0; md->refs=0; md->valrefs=0; md->hardlinks=0; md->num_keypairs=size; }else{ md=&empty_data; } add_ref(md); m->data=md; #ifdef MAPPING_SIZE_DEBUG m->debug_size = md->size; #endif } /* This function allocates an empty mapping with room for 'size' values */ PMOD_EXPORT struct mapping *debug_allocate_mapping(int size) { struct mapping *m; m=alloc_mapping(); GC_ALLOC(m); INITIALIZE_PROT(m); init_mapping(m,size); m->refs = 1; DOUBLELINK(first_mapping, m); return m; } PMOD_EXPORT void really_free_mapping_data(struct mapping_data *md) { INT32 e; struct keypair *k; debug_malloc_touch(md); #ifdef PIKE_DEBUG if (md->refs) { fatal("really_free_mapping_data(): md has non-zero refs: %d\n", md->refs); } #endif /* PIKE_DEBUG */ NEW_MAPPING_LOOP(md) { free_svalue(& k->val); free_svalue(& k->ind); } free((char *) md); GC_FREE_BLOCK(md); } PMOD_EXPORT void do_free_mapping(struct mapping *m) { if (m) free_mapping(m); } /* This function is used to rehash a mapping without loosing the internal * order in each hash chain. This is to prevent mappings from becoming * inefficient just after being rehashed. */ static void mapping_rehash_backwards_evil(struct mapping_data *md, struct keypair *from) { unsigned INT32 h; struct keypair *tmp; struct keypair *k; if(!from) return; mapping_rehash_backwards_evil(md,from->next); /* unlink */ k=md->free_list; #ifdef PIKE_DEBUG if(!k) fatal("Error in rehash: not enough keypairs.\n"); #endif md->free_list=k->next; /* initialize */ *k=*from; /* link */ h=k->hval; h%=md->hashsize; k->next=md->hash[h]; md->hash[h]=k; /* update */ md->ind_types |= 1<< (k->ind.type); md->val_types |= 1<< (k->val.type); md->size++; } static void mapping_rehash_backwards_good(struct mapping_data *md, struct keypair *from) { unsigned INT32 h; struct keypair *tmp; struct keypair *k; if(!from) return; mapping_rehash_backwards_good(md,from->next); /* unlink */ k=md->free_list; #ifdef PIKE_DEBUG if(!k) fatal("Error in rehash: not enough keypairs.\n"); #endif md->free_list=k->next; /* initialize */ k->hval=from->hval; assign_svalue_no_free(&k->ind, &from->ind); assign_svalue_no_free(&k->val, &from->val); /* link */ h=k->hval; h%=md->hashsize; k->next=md->hash[h]; md->hash[h]=k; /* update */ md->ind_types |= 1<< (k->ind.type); md->val_types |= 1<< (k->val.type); md->size++; } /* This function re-allocates a mapping. It adjusts the max no. of * values can be fitted into the mapping. It takes a bit of time to * run, but is used seldom enough not to degrade preformance significantly. */ static struct mapping *rehash(struct mapping *m, int new_size) { struct mapping_data *md, *new_md; #ifdef PIKE_DEBUG INT32 tmp=m->data->size; #endif INT32 e; md=m->data; debug_malloc_touch(md); #ifdef PIKE_DEBUG if(md->refs <=0) fatal("Zero refs in mapping->data\n"); if(d_flag>1) check_mapping(m); #endif init_mapping(m, new_size); debug_malloc_touch(m); new_md=m->data; new_md->flags = md->flags; /* This operation is now 100% atomic - no locking required */ if(md->refs>1) { /* good */ for(e=0;e<md->hashsize;e++) mapping_rehash_backwards_good(new_md, md->hash[e]); unlink_mapping_data(md); }else{ /* evil */ for(e=0;e<md->hashsize;e++) mapping_rehash_backwards_evil(new_md, md->hash[e]); free((char *)md); GC_FREE_BLOCK(md); } #ifdef PIKE_DEBUG if(m->data->size != tmp) fatal("Rehash failed, size not same any more.\n"); #endif #ifdef MAPPING_SIZE_DEBUG m->debug_size = m->data->size; #endif #ifdef PIKE_DEBUG if(d_flag>1) check_mapping(m); #endif return m; } /* * No need for super efficiency, should not be called very often * -Hubbe */ #define LOW_RELOC(X) X= (void *) ((char *)(X) + off); #define RELOC(X) if(X) LOW_RELOC(X) struct mapping_data *copy_mapping_data(struct mapping_data *md) { long e; ptrdiff_t size, off; struct mapping_data *nmd; struct keypair *keypairs; #ifdef PIKE_DEBUG if (Pike_in_gc > GC_PASS_PREPARE && Pike_in_gc < GC_PASS_ZAP_WEAK) fatal("Can't allocate a new mapping_data inside gc.\n"); #endif debug_malloc_touch(md); size=MAPPING_DATA_SIZE(md->hashsize, md->num_keypairs); nmd=(struct mapping_data *)xalloc(size); MEMCPY(nmd, md, size); off=((char *)nmd) - ((char *)md); RELOC(nmd->free_list); for(e=0;e<nmd->hashsize;e++) RELOC(nmd->hash[e]); keypairs=MD_KEYPAIRS(nmd, nmd->hashsize); for(e=0;e<nmd->num_keypairs;e++) { RELOC(keypairs[e].next); add_ref_svalue(& keypairs[e].ind); add_ref_svalue(& keypairs[e].val); } nmd->refs=1; nmd->valrefs=0; nmd->hardlinks=0; if(md->hardlinks) { #ifdef PIKE_DEBUG if(md->refs <= 0 || md->valrefs<=0) fatal("Hardlink without refs/valrefs!\n"); #endif md->hardlinks--; md->valrefs--; } md->refs--; return nmd; } #define MAPPING_DATA_IN_USE(MD) ((MD)->refs != (MD)->hardlinks + 1) #define LOW_FIND(FUN, KEY, FOUND, NOT_FOUND) do { \ md=m->data; \ add_ref(md); \ if(md->hashsize) \ { \ h=h2 % md->hashsize; \ DO_IF_DEBUG( if(d_flag > 1) check_mapping_type_fields(m); ) \ if(md->ind_types & (1 << key->type)) \ { \ for(prev= md->hash + h;(k=*prev);prev=&k->next) \ { \ if(h2 == k->hval && FUN(& k->ind, KEY)) \ { \ FOUND; \ } \ } \ } \ } \ NOT_FOUND; \ }while(0) #define LOW_FIND2(FUN, KEY, FOUND, NOT_FOUND) do { \ struct keypair *k2; \ md=m->data; \ add_ref(md); \ if(md->hashsize) \ { \ h=h2 % md->hashsize; \ DO_IF_DEBUG( if(d_flag > 1) check_mapping_type_fields(m); ) \ if(md->ind_types & (1 << key->type)) \ { \ k2=omd->hash[h2 % md->hashsize]; \ prev= md->hash + h; \ for(;(k=*prev) && k2;(prev=&k->next),(k2=k2->next)) \ if(!(h2 == k->hval && is_identical(&k2->ind, &k->ind))) \ break; \ for(;(k=*prev);prev=&k->next) \ { \ if(FUN(& k->ind, KEY)) \ { \ FOUND; \ } \ } \ } \ } \ NOT_FOUND; \ }while(0) #define SAME_DATA(SAME,NOT_SAME) \ if(m->data == md) \ { \ SAME; \ }else{ \ NOT_SAME; \ } /* FIXME: the 'no action' might need to be fixed.... */ #define FIND() do{ \ LOW_FIND(is_eq, key, \ omd=md; \ SAME_DATA( break, \ struct svalue *tmp=&k->ind; \ LOW_FIND(is_identical, tmp, break, ;); \ free_mapping_data(omd)), \ break); \ free_mapping_data(md); \ }while(0) /* Assumes md is *NOT* locked */ #define COPYMAP2() do { \ ptrdiff_t off; \ m->data=copy_mapping_data(m->data); \ debug_malloc_touch(m->data); \ DO_IF_DEBUG( if(d_flag>1) check_mapping(m); ) \ off=((char *)m->data)-((char *)md); \ LOW_RELOC(k); \ LOW_RELOC(prev); \ md=m->data; \ }while(0) #define PREPARE_FOR_DATA_CHANGE2() \ if(md->valrefs) COPYMAP2() #define PREPARE_FOR_INDEX_CHANGE2() \ if(md->refs>1) COPYMAP2() #define PROPAGATE() do { \ if(md->refs==1) \ { \ h=h2 % md->hashsize; \ *prev=k->next; \ k->next=md->hash[h]; \ md->hash[h]=k; \ } \ }while(0) /* Assumes md is locked */ #define COPYMAP() do { \ ptrdiff_t off; \ m->data=copy_mapping_data(m->data); \ debug_malloc_touch(m->data); \ off=((char *)m->data)-((char *)md); \ LOW_RELOC(k); \ free_mapping_data(md); \ md=m->data; \ md->refs++; \ }while(0) #define PREPARE_FOR_DATA_CHANGE() \ if(md->valrefs) COPYMAP() #define PREPARE_FOR_INDEX_CHANGE() \ if(md->refs>1) COPYMAP() /* This function brings the type fields in the mapping up to speed. * I only use it when the type fields MUST be correct, which is not * very often. */ PMOD_EXPORT void mapping_fix_type_field(struct mapping *m) { INT32 e; struct keypair *k; TYPE_FIELD ind_types, val_types; val_types = ind_types = 0; NEW_MAPPING_LOOP(m->data) { val_types |= 1 << k->val.type; ind_types |= 1 << k->ind.type; } #ifdef PIKE_DEBUG if(val_types & ~(m->data->val_types)) fatal("Mapping value types out of order!\n"); if(ind_types & ~(m->data->ind_types)) fatal("Mapping indices types out of order!\n"); #endif m->data->val_types = val_types; m->data->ind_types = ind_types; } PMOD_EXPORT void mapping_set_flags(struct mapping *m, int flags) { struct mapping_data *md = m->data; if (md->refs > 1) { struct keypair *k = NULL, *prev = NULL; COPYMAP2(); } md->flags = flags; } /* This function inserts key:val into the mapping m. * Same as doing m[key]=val; in pike. */ PMOD_EXPORT void low_mapping_insert(struct mapping *m, struct svalue *key, struct svalue *val, int overwrite) { unsigned INT32 h,h2; struct keypair *k, **prev; struct mapping_data *md, *omd; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif h2=hash_svalue(key); #ifdef PIKE_DEBUG if(d_flag>1) check_mapping(m); #endif LOW_FIND(is_eq, key, struct svalue *tmp=&k->ind; SAME_DATA(goto mi_set_value, omd=md; LOW_FIND(is_identical, tmp, free_mapping_data(omd); goto mi_set_value, free_mapping_data(omd); goto mi_do_nothing)), Z: SAME_DATA(goto mi_insert, omd=md; LOW_FIND2(is_eq, key, free_mapping_data(omd); goto mi_do_nothing, free_mapping_data(omd); goto Z))); mi_do_nothing: free_mapping_data(md); return; mi_set_value: #ifdef PIKE_DEBUG if(m->data != md) fatal("Wrong dataset in mapping_insert!\n"); if(d_flag>1) check_mapping(m); #endif free_mapping_data(md); if(!overwrite) return; PREPARE_FOR_DATA_CHANGE2(); PROPAGATE(); /* propagate after preparing */ md->val_types |= 1 << val->type; assign_svalue(& k->val, val); #ifdef PIKE_DEBUG if(d_flag>1) check_mapping(m); #endif return; mi_insert: #ifdef PIKE_DEBUG if(m->data != md) fatal("Wrong dataset in mapping_insert!\n"); if(d_flag>1) check_mapping(m); #endif free_mapping_data(md); /* We do a re-hash here instead of copying the mapping. */ if((!(k=md->free_list)) || md->refs>1) { debug_malloc_touch(m); rehash(m, md->size * 2 + 2); md=m->data; k=md->free_list; } h=h2 % md->hashsize; /* no need to lock here since we are not calling is_eq - Hubbe */ k=md->free_list; md->free_list=k->next; k->next=md->hash[h]; md->hash[h]=k; md->ind_types |= 1 << key->type; md->val_types |= 1 << val->type; assign_svalue_no_free(& k->ind, key); assign_svalue_no_free(& k->val, val); k->hval = h2; md->size++; #ifdef MAPPING_SIZE_DEBUG if(m->data ==md) m->debug_size++; #endif #ifdef PIKE_DEBUG if(d_flag>1) check_mapping(m); #endif } PMOD_EXPORT void mapping_insert(struct mapping *m, struct svalue *key, struct svalue *val) { low_mapping_insert(m,key,val,1); } PMOD_EXPORT union anything *mapping_get_item_ptr(struct mapping *m, struct svalue *key, TYPE_T t) { unsigned INT32 h, h2; struct keypair *k, **prev; struct mapping_data *md,*omd; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); if(d_flag>1) check_mapping(m); debug_malloc_touch(m); debug_malloc_touch(m->data); #endif h2=hash_svalue(key); LOW_FIND(is_eq, key, struct svalue *tmp=&k->ind; SAME_DATA(goto mg_set_value, omd=md; LOW_FIND(is_identical, tmp, free_mapping_data(omd); goto mg_set_value, free_mapping_data(omd); goto mg_do_nothing)), Z: SAME_DATA(goto mg_insert, omd=md; LOW_FIND2(is_eq, key, free_mapping_data(omd); goto mg_do_nothing, free_mapping_data(omd); goto Z))); mg_do_nothing: free_mapping_data(md); return 0; mg_set_value: #ifdef PIKE_DEBUG if(m->data != md) fatal("Wrong dataset in mapping_get_item_ptr!\n"); if(d_flag) check_mapping(m); #endif free_mapping_data(md); if(k->val.type == t) { PREPARE_FOR_DATA_CHANGE2(); PROPAGATE(); /* prepare then propagate */ return & ( k->val.u ); } return 0; mg_insert: #ifdef PIKE_DEBUG if(m->data != md) fatal("Wrong dataset in mapping_get_item_ptr!\n"); if(d_flag) check_mapping(m); #endif free_mapping_data(md); if(t != T_INT) return 0; /* no need to call PREPARE_* because we re-hash instead */ if(!(k=md->free_list) || md->refs>1) { debug_malloc_touch(m); rehash(m, md->size * 2 + 2); md=m->data; k=md->free_list; } h=h2 % md->hashsize; md->free_list=k->next; k->next=md->hash[h]; md->hash[h]=k; assign_svalue_no_free(& k->ind, key); k->val.type=T_INT; k->val.subtype=NUMBER_NUMBER; k->val.u.integer=0; k->hval = h2; md->ind_types |= 1 << key->type; md->val_types |= BIT_INT; md->size++; #ifdef MAPPING_SIZE_DEBUG if(m->data ==md) m->debug_size++; #endif #ifdef PIKE_DEBUG if(d_flag > 1) check_mapping_type_fields(m); #endif return & ( k->val.u ); } PMOD_EXPORT void map_delete_no_free(struct mapping *m, struct svalue *key, struct svalue *to) { unsigned INT32 h,h2; struct keypair *k, **prev; struct mapping_data *md,*omd; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); if(d_flag>1) check_mapping(m); debug_malloc_touch(m); #endif h2=hash_svalue(key); LOW_FIND(is_eq, key, struct svalue *tmp=&k->ind; SAME_DATA(goto md_remove_value, omd=md; LOW_FIND(is_identical, tmp, free_mapping_data(omd); goto md_remove_value, free_mapping_data(omd); goto md_do_nothing)), goto md_do_nothing); md_do_nothing: debug_malloc_touch(m); free_mapping_data(md); if(to) { to->type=T_INT; to->subtype=NUMBER_UNDEFINED; to->u.integer=0; } return; md_remove_value: #ifdef PIKE_DEBUG if(md->refs <= 1) fatal("Too few refs i mapping->data\n"); if(m->data != md) fatal("Wrong dataset in mapping_delete!\n"); if(d_flag>1) check_mapping(m); debug_malloc_touch(m); #endif free_mapping_data(md); PREPARE_FOR_INDEX_CHANGE2(); /* No need to propagate */ *prev=k->next; free_svalue(& k->ind); if(to) to[0]=k->val; else free_svalue(& k->val); k->ind.type=T_INT; k->val.type=T_INT; k->next=md->free_list; md->free_list=k; md->size--; #ifdef MAPPING_SIZE_DEBUG if(m->data ==md) m->debug_size--; #endif if(md->size < (md->hashsize + 1) * MIN_LINK_LENGTH) { debug_malloc_touch(m); rehash(m, MAP_SLOTS(m->data->size)); } #ifdef PIKE_DEBUG if(d_flag>1) check_mapping(m); #endif return; } static void low_check_mapping_for_destruct( struct mapping_data *md, int e, struct keypair **prev, TYPE_FIELD ind_types, TYPE_FIELD val_types) { struct keypair *k; #ifdef PIKE_DEBUG if (MAPPING_DATA_IN_USE(md)) fatal("The mapping data is busy.\n"); #endif debug_malloc_touch(md); if (prev) { k = *prev; goto jump_in; } for(e=0;e<md->hashsize;e++) { for(prev= md->hash + e;(k=*prev);) { jump_in: check_destructed(& k->val); if((k->ind.type == T_OBJECT || k->ind.type == T_FUNCTION) && !k->ind.u.object->prog) { *prev=k->next; free_svalue(& k->ind); free_svalue(& k->val); k->next=md->free_list; md->free_list=k; md->size--; }else{ val_types |= 1 << k->val.type; ind_types |= 1 << k->ind.type; prev=&k->next; } } } md->val_types = val_types; md->ind_types = ind_types; } PMOD_EXPORT void check_mapping_for_destruct(struct mapping *m) { INT32 e; struct keypair *k, **prev; TYPE_FIELD ind_types, val_types; struct mapping_data *md=m->data; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); if(d_flag>1) check_mapping(m); debug_malloc_touch(m); #endif /* no is_eq -> no locking */ if(!md->size) return; if((md->ind_types | md->val_types) & (BIT_OBJECT | BIT_FUNCTION)) { val_types = ind_types = 0; md->val_types |= BIT_INT; for(e=0;e<md->hashsize;e++) { for(prev= md->hash + e;(k=*prev);) { if((k->ind.type == T_OBJECT || k->ind.type == T_FUNCTION) && !k->ind.u.object->prog) { #ifdef MAPPING_SIZE_DEBUG size_t old_size = md->size; #endif debug_malloc_touch(m); debug_malloc_touch(md); PREPARE_FOR_INDEX_CHANGE2(); low_check_mapping_for_destruct (md, e, prev, ind_types, val_types); #ifdef MAPPING_SIZE_DEBUG m->debug_size -= old_size - md->size; #endif goto done; }else{ check_destructed(& k->val); val_types |= 1 << k->val.type; ind_types |= 1 << k->ind.type; prev=&k->next; } } } done: if(MAP_SLOTS(md->size) < md->hashsize * MIN_LINK_LENGTH) { debug_malloc_touch(m); rehash(m, MAP_SLOTS(md->size)); } #ifdef PIKE_DEBUG if(d_flag>1) check_mapping(m); #endif } } /* This one doesn't copy the mapping data before writing it. Instead * it does nothing at all if the mapping data is busy. */ static void stealth_check_mapping_for_destruct(struct mapping *m) { struct mapping_data *md=m->data; if (MAPPING_DATA_IN_USE(md)) { TYPE_FIELD val_types = 0; INT32 e; struct keypair *k; md->val_types |= BIT_INT; NEW_MAPPING_LOOP(md) { check_destructed(&k->val); val_types |= 1 << k->val.type; } md->val_types = val_types; } else if((md->ind_types | md->val_types) & (BIT_OBJECT | BIT_FUNCTION)) low_check_mapping_for_destruct (md, 0, 0, 0, 0); } PMOD_EXPORT struct svalue *low_mapping_lookup(struct mapping *m, struct svalue *key) { unsigned INT32 h,h2; struct keypair *k=0, **prev=0; struct mapping_data *md, *omd; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); if(d_flag>1) check_mapping(m); #endif h2=hash_svalue(key); #ifdef PIKE_DEBUG if(d_flag > 1) check_mapping_type_fields(m); #endif FIND(); if(k) { PROPAGATE(); return &k->val; } return 0; } PMOD_EXPORT struct svalue *low_mapping_string_lookup(struct mapping *m, struct pike_string *p) { struct svalue tmp; tmp.type=T_STRING; tmp.u.string=p; return low_mapping_lookup(m, &tmp); } PMOD_EXPORT void mapping_string_insert(struct mapping *m, struct pike_string *p, struct svalue *val) { struct svalue tmp; tmp.type=T_STRING; tmp.u.string=p; mapping_insert(m, &tmp, val); } PMOD_EXPORT void mapping_string_insert_string(struct mapping *m, struct pike_string *p, struct pike_string *val) { struct svalue tmp; tmp.type=T_STRING; tmp.u.string=val; mapping_string_insert(m, p, &tmp); } PMOD_EXPORT struct svalue *simple_mapping_string_lookup(struct mapping *m, char *p) { struct pike_string *tmp; if((tmp=findstring(p))) return low_mapping_string_lookup(m,tmp); return 0; } PMOD_EXPORT struct svalue *mapping_mapping_lookup(struct mapping *m, struct svalue *key1, struct svalue *key2, int create) { struct svalue tmp; struct mapping *m2; struct svalue *s=low_mapping_lookup(m, key1); debug_malloc_touch(m); #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif if(!s || !s->type==T_MAPPING) { if(!create) return 0; tmp.u.mapping=allocate_mapping(5); tmp.type=T_MAPPING; mapping_insert(m, key1, &tmp); debug_malloc_touch(m); debug_malloc_touch(tmp.u.mapping); free_mapping(tmp.u.mapping); /* There is one ref in 'm' */ s=&tmp; } m2=s->u.mapping; debug_malloc_touch(m2); s=low_mapping_lookup(m2, key2); if(s) return s; if(!create) return 0; tmp.type=T_INT; tmp.subtype=NUMBER_UNDEFINED; tmp.u.integer=0; mapping_insert(m2, key2, &tmp); debug_malloc_touch(m2); return low_mapping_lookup(m2, key2); } PMOD_EXPORT struct svalue *mapping_mapping_string_lookup(struct mapping *m, struct pike_string *key1, struct pike_string *key2, int create) { struct svalue k1,k2; k1.type=T_STRING; k1.u.string=key1; k2.type=T_STRING; k2.u.string=key2; return mapping_mapping_lookup(m,&k1,&k2,create); } PMOD_EXPORT void mapping_index_no_free(struct svalue *dest, struct mapping *m, struct svalue *key) { struct svalue *p; if((p=low_mapping_lookup(m,key))) { if(p->type==T_INT) p->subtype=NUMBER_NUMBER; assign_svalue_no_free(dest, p); }else{ dest->type=T_INT; dest->u.integer=0; dest->subtype=NUMBER_UNDEFINED; } } PMOD_EXPORT struct array *mapping_indices(struct mapping *m) { INT32 e; struct array *a; struct svalue *s; struct keypair *k; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif check_mapping_for_destruct(m); a=allocate_array(m->data->size); s=ITEM(a); /* no locking required */ NEW_MAPPING_LOOP(m->data) assign_svalue(s++, & k->ind); a->type_field = m->data->ind_types; #ifdef PIKE_DEBUG if(d_flag > 1) check_mapping_type_fields(m); #endif return a; } PMOD_EXPORT struct array *mapping_values(struct mapping *m) { INT32 e; struct keypair *k; struct array *a; struct svalue *s; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif check_mapping_for_destruct(m); a=allocate_array(m->data->size); s=ITEM(a); /* no locking required */ NEW_MAPPING_LOOP(m->data) assign_svalue(s++, & k->val); a->type_field = m->data->val_types; #ifdef PIKE_DEBUG if(d_flag > 1) check_mapping_type_fields(m); #endif return a; } PMOD_EXPORT struct array *mapping_to_array(struct mapping *m) { INT32 e; struct keypair *k; struct array *a; struct svalue *s; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif a=allocate_array(m->data->size); s=ITEM(a); /* no locking required */ NEW_MAPPING_LOOP(m->data) { struct array *b=allocate_array(2); assign_svalue(b->item+0, & k->ind); assign_svalue(b->item+1, & k->val); s->u.array=b; s->type=T_ARRAY; s++; } a->type_field = BIT_ARRAY; return a; } PMOD_EXPORT void mapping_replace(struct mapping *m,struct svalue *from, struct svalue *to) { INT32 e; struct keypair *k; struct mapping_data *md; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif md=m->data; if(md->size) { add_ref(md); NEW_MAPPING_LOOP(md) { if(is_eq(& k->val, from)) { PREPARE_FOR_DATA_CHANGE(); assign_svalue(& k->val, to); md->val_types|=1<<to->type; } } free_mapping_data(md); } #ifdef PIKE_DEBUG if(d_flag > 1) check_mapping_type_fields(m); #endif } PMOD_EXPORT struct mapping *mkmapping(struct array *ind, struct array *val) { struct mapping *m; struct svalue *i,*v; INT32 e; #ifdef PIKE_DEBUG if(ind->size != val->size) fatal("mkmapping on different sized arrays.\n"); #endif m=allocate_mapping(MAP_SLOTS(ind->size)); i=ITEM(ind); v=ITEM(val); for(e=0;e<ind->size;e++) mapping_insert(m, i++, v++); return m; } #if 0 PMOD_EXPORT struct mapping *copy_mapping(struct mapping *m) { INT32 e; struct mapping *n; struct keypair *k; struct mapping_data *md; md=m->data; n=allocate_mapping(MAP_SLOTS(md->size)); md->valrefs++; add_ref(md); NEW_MAPPING_LOOP(md) mapping_insert(n, &k->ind, &k->val); md->valrefs--; free_mapping_data(md); return n; } #else /* deferred mapping copy! */ PMOD_EXPORT struct mapping *copy_mapping(struct mapping *m) { struct mapping *n; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif n=allocate_mapping(0); if(!m_sizeof(m)) return n; /* done */ debug_malloc_touch(n->data); free_mapping_data(n->data); n->data=m->data; #ifdef MAPPING_SIZE_DEBUG n->debug_size=n->data->size; #endif n->data->refs++; n->data->valrefs++; n->data->hardlinks++; debug_malloc_touch(n->data); return n; } #endif PMOD_EXPORT struct mapping *merge_mappings(struct mapping *a, struct mapping *b, INT32 op) { struct array *ai, *av; struct array *bi, *bv; struct array *ci, *cv; INT32 *zipper; struct mapping *m; #ifdef PIKE_DEBUG if(a->data->refs <=0) fatal("Zero refs in mapping->data\n"); if(b->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif ai=mapping_indices(a); av=mapping_values(a); if(ai->size > 1) { zipper=get_set_order(ai); order_array(ai, zipper); order_array(av, zipper); free((char *)zipper); } bi=mapping_indices(b); bv=mapping_values(b); if(bi->size > 1) { zipper=get_set_order(bi); order_array(bi, zipper); order_array(bv, zipper); free((char *)zipper); } zipper=merge(ai,bi,op); ci=array_zip(ai,bi,zipper); free_array(ai); free_array(bi); cv=array_zip(av,bv,zipper); free_array(av); free_array(bv); free((char *)zipper); m=mkmapping(ci, cv); free_array(ci); free_array(cv); return m; } PMOD_EXPORT struct mapping *merge_mapping_array_ordered(struct mapping *a, struct array *b, INT32 op) { struct array *ai, *av; struct array *ci, *cv; INT32 *zipper; struct mapping *m; ai=mapping_indices(a); av=mapping_values(a); if(ai->size > 1) { zipper=get_set_order(ai); order_array(ai, zipper); order_array(av, zipper); free((char *)zipper); } switch (op) /* no elements from »b» may be selected */ { case PIKE_ARRAY_OP_AND: zipper=merge(b,ai,op); ci=array_zip(b,ai,zipper); /* b must not be used */ cv=array_zip(b,av,zipper); /* b must not be used */ break; case PIKE_ARRAY_OP_SUB: zipper=merge(ai,b,op); ci=array_zip(ai,b,zipper); /* b must not be used */ cv=array_zip(av,b,zipper); /* b must not be used */ break; default: fatal("merge_mapping_array on other than AND or SUB\n"); } free_array(ai); free_array(av); free((char *)zipper); m=mkmapping(ci, cv); free_array(ci); free_array(cv); return m; } PMOD_EXPORT struct mapping *merge_mapping_array_unordered(struct mapping *a, struct array *b, INT32 op) { struct array *b_temp; INT32 *zipper; struct mapping *m; if (b->size>1) { zipper=get_set_order(b); b_temp=reorder_and_copy_array(b,zipper); m=merge_mapping_array_ordered(a,b_temp,op); free_array(b_temp); } else m=merge_mapping_array_ordered(a,b,op); return m; } PMOD_EXPORT struct mapping *add_mappings(struct svalue *argp, INT32 args) { INT32 e,d; struct mapping *ret=0; struct keypair *k; for(e=d=0;d<args;d++) { #ifdef PIKE_DEBUG if(d_flag>1) check_mapping(argp[d].u.mapping); #endif e+=argp[d].u.mapping->data->size; } if(!e) return allocate_mapping(0); d=0; for(;d<args;d++) { struct mapping *m=argp[d].u.mapping; struct mapping_data *md=m->data; if(md->size == 0) continue; if(!(md->flags && MAPPING_FLAG_WEAK)) { #if 1 /* major optimization */ if(e==md->size) return copy_mapping(m); #endif if(m->refs == 1 && !md->hardlinks) { add_ref( ret=m ); d++; break; } } ret=allocate_mapping(MAP_SLOTS(e)); break; } for(;d<args;d++) { struct mapping *m=argp[d].u.mapping; struct mapping_data *md=m->data; add_ref(md); NEW_MAPPING_LOOP(md) mapping_insert(ret, &k->ind, &k->val); free_mapping_data(md); } #ifdef PIKE_DEBUG if(!ret) fatal("add_mappings is confused!\n"); #endif return ret; } PMOD_EXPORT int mapping_equal_p(struct mapping *a, struct mapping *b, struct processing *p) { struct processing curr; struct keypair *k; struct mapping_data *md; INT32 e,eq=1; #ifdef PIKE_DEBUG if(a->data->refs <=0) fatal("Zero refs in mapping->data\n"); if(b->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif if(a==b) return 1; check_mapping_for_destruct(a); check_mapping_for_destruct(b); if(m_sizeof(a) != m_sizeof(b)) return 0; curr.pointer_a = a; curr.pointer_b = b; curr.next = p; for( ;p ;p=p->next) if(p->pointer_a == (void *)a && p->pointer_b == (void *)b) return 1; md=a->data; md->valrefs++; add_ref(md); NEW_MAPPING_LOOP(md) { struct svalue *s; if((s=low_mapping_lookup(b, & k->ind))) { if(!low_is_equal(s, &k->val, &curr)) { eq=0; break; } }else{ eq=0; break; } } md->valrefs--; free_mapping_data(md); return eq; } void describe_mapping(struct mapping *m,struct processing *p,int indent) { struct processing doing; struct array *a; JMP_BUF catch; ONERROR err; INT32 e,d; struct keypair *k; char buf[40]; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif if(! m->data->size) { my_strcat("([ ])"); return; } doing.next=p; doing.pointer_a=(void *)m; for(e=0;p;e++,p=p->next) { if(p->pointer_a == (void *)m) { sprintf(buf,"@%ld",(long)e); my_strcat(buf); return; } } if (m->data->size == 1) { my_strcat("([ /* 1 element */\n"); } else { sprintf(buf, "([ /* %ld elements */\n", (long)m->data->size); my_strcat(buf); } a = mapping_indices(m); SET_ONERROR(err, do_free_array, a); if(!SETJMP(catch)) sort_array_destructively(a); UNSETJMP(catch); /* no mapping locking required (I hope) */ for(e = 0; e < a->size; e++) { struct svalue *tmp; if(e) my_strcat(",\n"); for(d = 0; d < indent; d++) my_putchar(' '); describe_svalue(ITEM(a)+e, indent+2, &doing); my_putchar(':'); if((tmp=low_mapping_lookup(m, ITEM(a)+e))) describe_svalue(tmp, indent+2, &doing); else my_strcat("** gone **"); } UNSET_ONERROR(err); free_array(a); my_putchar('\n'); for(e=2; e<indent; e++) my_putchar(' '); my_strcat("])"); } node *make_node_from_mapping(struct mapping *m) { struct keypair *k; INT32 e; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif mapping_fix_type_field(m); if((m->data->ind_types | m->data->val_types) & (BIT_FUNCTION | BIT_OBJECT)) { struct array *ind, *val; node *n; ind=mapping_indices(m); val=mapping_values(m); n=mkefuncallnode("mkmapping", mknode(F_ARG_LIST, make_node_from_array(ind), make_node_from_array(val))); free_array(ind); free_array(val); return n; }else{ struct svalue s; if(!m->data->size) return mkefuncallnode("aggregate_mapping",0); s.type=T_MAPPING; s.subtype=0; s.u.mapping=m; return mkconstantsvaluenode(&s); } } PMOD_EXPORT void f_aggregate_mapping(INT32 args) { INT32 e; struct keypair *k; struct mapping *m; if(args & 1) error("Uneven number of arguments to aggregate_mapping.\n"); m=allocate_mapping(MAP_SLOTS(args / 2)); for(e=-args;e<0;e+=2) mapping_insert(m, sp+e, sp+e+1); pop_n_elems(args); #ifdef PIKE_DEBUG if(d_flag) check_mapping(m); #endif push_mapping(m); } PMOD_EXPORT struct mapping *copy_mapping_recursively(struct mapping *m, struct processing *p) { struct processing doing; struct mapping *ret; INT32 e; struct keypair *k; struct mapping_data *md; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif doing.next=p; doing.pointer_a=(void *)m; for(;p;p=p->next) { if(p->pointer_a == (void *)m) { add_ref(ret=(struct mapping *)p->pointer_b); return ret; } } #ifdef PIKE_DEBUG if(d_flag > 1) check_mapping_type_fields(m); #endif if(!((m->data->val_types | m->data->ind_types) & BIT_COMPLEX)) return copy_mapping(m); ret=allocate_mapping(MAP_SLOTS(m->data->size)); doing.pointer_b=ret; ret->data->flags = m->data->flags; check_stack(2); md=m->data; md->valrefs++; add_ref(md); NEW_MAPPING_LOOP(md) { copy_svalues_recursively_no_free(sp,&k->ind, 1, p); sp++; copy_svalues_recursively_no_free(sp,&k->val, 1, p); sp++; mapping_insert(ret, sp-2, sp-1); pop_n_elems(2); } md->valrefs--; free_mapping_data(md); return ret; } PMOD_EXPORT void mapping_search_no_free(struct svalue *to, struct mapping *m, struct svalue *look_for, struct svalue *key /* start */) { struct mapping_data *md, *omd; #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif md=m->data; if(md->size) { unsigned INT32 h2,h=0; struct keypair *k=md->hash[0], **prev; if(key) { h2=hash_svalue(key); FIND(); if(!k) { to->type=T_INT; to->subtype=NUMBER_UNDEFINED; to->u.integer=0; return; } k=k->next; } md=m->data; if(md->size) { md->valrefs++; add_ref(md); if(h < (unsigned INT32)md->hashsize) { while(1) { while(k) { if(is_eq(look_for, &k->val)) { assign_svalue_no_free(to,&k->ind); md->valrefs--; free_mapping_data(md); return; } k=k->next; } h++; if(h>= (unsigned INT32)md->hashsize) break; k=md->hash[h]; } } } md->valrefs--; free_mapping_data(md); } to->type=T_INT; to->subtype=NUMBER_UNDEFINED; to->u.integer=0; } #ifdef PIKE_DEBUG void check_mapping(struct mapping *m) { int e,num; struct keypair *k; struct mapping_data *md; static int in_check_mapping; if(in_check_mapping) return; in_check_mapping=1; md=m->data; if(m->refs <=0) fatal("Mapping has zero refs.\n"); if(!m->data) fatal("Mapping has no data block.\n"); if (!m->data->refs) fatal("Mapping data block has zero refs.\n"); if(m->next && m->next->prev != m) fatal("Mapping ->next->prev != mapping.\n"); #ifdef MAPPING_SIZE_DEBUG if(m->debug_size != md->size) { if(Pike_in_gc) { fprintf(stderr,"Pike was in GC stage %d when this fatal occured:\n",Pike_in_gc); Pike_in_gc=0; } fprintf(stderr,"--MAPPING ZAPPING (%d!=%d), mapping:\n",m->debug_size,md->size); describe(m); fprintf(stderr,"--MAPPING ZAPPING (%d!=%d), mapping data:\n",m->debug_size,md->size); describe(md); fatal("Mapping zapping detected (%d != %d)!\n",m->debug_size,md->size); } #endif if(m->prev) { if(m->prev->next != m) fatal("Mapping ->prev->next != mapping.\n"); }else{ if(first_mapping != m) fatal("Mapping ->prev == 0 but first_mapping != mapping.\n"); } if(md->valrefs <0) fatal("md->valrefs < 0\n"); if(md->hardlinks <0) fatal("md->valrefs < 0\n"); if(md->refs < md->valrefs+1) fatal("md->refs < md->valrefs+1\n"); if(md->valrefs < md->hardlinks) fatal("md->refs < md->valrefs+1\n"); if(md->hashsize < 0) fatal("Assert: I don't think he's going to make it Jim.\n"); if(md->size < 0) fatal("Core breach, evacuate ship!\n"); if(md->num_keypairs < 0) fatal("Starboard necell on fire!\n"); if(md->size > md->num_keypairs) fatal("Pretty mean hashtable there buster!\n"); if(md->hashsize > md->num_keypairs) fatal("Pretty mean hashtable there buster (2)!\n"); if(md->num_keypairs > (md->hashsize + 3) * AVG_LINK_LENGTH) fatal("Mapping from hell detected, attempting to send it back...\n"); if(md->size > 0 && (!md->ind_types || !md->val_types)) fatal("Mapping type fields are... wrong.\n"); num=0; NEW_MAPPING_LOOP(md) { num++; if(! ( (1 << k->ind.type) & (md->ind_types) )) fatal("Mapping indices type field lies.\n"); if(! ( (1 << k->val.type) & (md->val_types) )) fatal("Mapping values type field lies.\n"); check_svalue(& k->ind); check_svalue(& k->val); /* FIXME add check for k->hval * beware that hash_svalue may be threaded and locking * is required!! */ } if(md->size != num) fatal("Shields are failing, hull integrity down to 20%%\n"); in_check_mapping=0; } void check_all_mappings(void) { struct mapping *m; for(m=first_mapping;m;m=m->next) check_mapping(m); } #endif void gc_mark_mapping_as_referenced(struct mapping *m) { #ifdef PIKE_DEBUG if(m->data->refs <=0) fatal("Zero refs in mapping->data\n"); #endif if(gc_mark(m)) { struct mapping_data *md = m->data; if (m == gc_mark_mapping_pos) gc_mark_mapping_pos = m->next; if (m == gc_internal_mapping) gc_internal_mapping = m->next; else { DOUBLEUNLINK(first_mapping, m); DOUBLELINK(first_mapping, m); /* Linked in first. */ } if(gc_mark(md)) { if ((md->ind_types | md->val_types) & BIT_COMPLEX) { INT32 e; struct keypair *k; if (MAPPING_DATA_IN_USE(md)) { /* Must leave destructed indices intact if the mapping data is busy. */ stealth_check_mapping_for_destruct(m); NEW_MAPPING_LOOP(md) { if (!IS_DESTRUCTED(&k->ind) && gc_mark_svalues(&k->ind, 1)) { #ifdef PIKE_DEBUG fatal("Didn't expect an svalue zapping now.\n"); #endif } if (gc_mark_svalues(&k->val, 1)) { #ifdef PIKE_DEBUG fatal("stealth_check_mapping_for_destruct didn't do its job properly.\n"); #endif } } gc_assert_checked_as_nonweak(md); } else if (md->flags & MAPPING_FLAG_WEAK) { INT32 e; struct keypair *k,**prev; TYPE_FIELD ind_types = 0, val_types = 0; /* no locking required (no is_eq) */ for(e=0;e<md->hashsize;e++) { for(prev= md->hash + e;(k=*prev);) { int i = gc_mark_weak_svalues(&k->ind, 1); int v = gc_mark_weak_svalues(&k->val, 1); if(i || v) { *prev=k->next; if (!i) free_svalue(&k->ind); if (!v) free_svalue(&k->val); k->next=md->free_list; md->free_list=k; md->size--; #ifdef MAPPING_SIZE_DEBUG if(m->data ==md) m->debug_size--; #endif }else{ val_types |= 1 << k->val.type; ind_types |= 1 << k->ind.type; prev=&k->next; } } } md->val_types = val_types; md->ind_types = ind_types; gc_assert_checked_as_weak(md); } else { stealth_check_mapping_for_destruct(m); NEW_MAPPING_LOOP(md) if (gc_mark_svalues(&k->ind, 1) | gc_mark_svalues(&k->val, 1)) { #ifdef PIKE_DEBUG fatal("stealth_check_mapping_for_destruct didn't do its job properly.\n"); #endif } gc_assert_checked_as_nonweak(md); } } else stealth_check_mapping_for_destruct(m); } } } void real_gc_cycle_check_mapping(struct mapping *m, int weak) { GC_CYCLE_ENTER(m, weak) { struct mapping_data *md = m->data; #ifdef PIKE_DEBUG if(md->refs <=0) fatal("Zero refs in mapping->data\n"); #endif if((md->ind_types | md->val_types) & BIT_COMPLEX) { INT32 e; struct keypair *k; if (MAPPING_DATA_IN_USE(md)) { /* Must leave destructed indices intact if the mapping data is busy. */ NEW_MAPPING_LOOP(md) if ((!IS_DESTRUCTED(&k->ind) && gc_cycle_check_svalues(&k->ind, 1)) | gc_cycle_check_svalues(&k->val, 1)) { #ifdef PIKE_DEBUG fatal("Didn't expect an svalue zapping now.\n"); #endif } gc_assert_checked_as_nonweak(md); } else if (md->flags & MAPPING_FLAG_WEAK) { /* We don't remove any entries in this case, since weak * internal references are kept intact. */ NEW_MAPPING_LOOP(md) if (gc_cycle_check_weak_svalues(&k->ind, 1) | gc_cycle_check_weak_svalues(&k->val, 1)) { #ifdef PIKE_DEBUG fatal("stealth_check_mapping_for_destruct didn't do its job properly.\n"); #endif } gc_assert_checked_as_weak(md); } else { NEW_MAPPING_LOOP(md) if (gc_cycle_check_svalues(&k->ind, 1) | gc_cycle_check_svalues(&k->val, 1)) { #ifdef PIKE_DEBUG fatal("stealth_check_mapping_for_destruct didn't do its job properly.\n"); #endif } gc_assert_checked_as_nonweak(md); } } } GC_CYCLE_LEAVE; } static void gc_check_mapping(struct mapping *m) { struct mapping_data *md = m->data; if((md->ind_types | md->val_types) & BIT_COMPLEX) { INT32 e; struct keypair *k; if(debug_gc_check(md, T_MAPPING, m)) return; if (md->flags & MAPPING_FLAG_WEAK && !MAPPING_DATA_IN_USE(md)) { /* Disregard the weak flag if the mapping data is busy; we must * leave it untouched in that case anyway. */ NEW_MAPPING_LOOP(md) { debug_gc_check_weak_svalues(&k->ind, 1, T_MAPPING, m); debug_gc_check_weak_svalues(&k->val, 1, T_MAPPING, m); } gc_checked_as_weak(md); } else { NEW_MAPPING_LOOP(md) { debug_gc_check_svalues(&k->ind, 1, T_MAPPING, m); debug_gc_check_svalues(&k->val, 1, T_MAPPING, m); } } } } #ifdef PIKE_DEBUG unsigned gc_touch_all_mappings(void) { unsigned n = 0; struct mapping *m; if (first_mapping && first_mapping->prev) fatal("Error in mapping link list.\n"); for (m = first_mapping; m; m = m->next) { debug_gc_touch(m); debug_gc_touch(m->data); n++; if (m->next && m->next->prev != m) fatal("Error in mapping link list.\n"); } return n; } #endif void gc_check_all_mappings(void) { struct mapping *m; for(m=first_mapping;m;m=m->next) { #ifdef DEBUG_MALLOC if (((int)m->data) == 0x55555555) { fprintf(stderr, "** Zapped mapping in list of active mappings!\n"); describe_something(m, T_MAPPING, 0,2,0); fatal("Zapped mapping in list of active mappings!\n"); } #endif /* DEBUG_MALLOC */ gc_check_mapping(m); #ifdef PIKE_DEBUG if(d_flag > 1) check_mapping_type_fields(m); #endif } } void gc_mark_all_mappings(void) { gc_mark_mapping_pos = gc_internal_mapping; while (gc_mark_mapping_pos) { struct mapping *m = gc_mark_mapping_pos; gc_mark_mapping_pos = m->next; if(gc_is_referenced(m)) gc_mark_mapping_as_referenced(m); else /* Done in gc_mark_mapping_as_referenced() otherwise (and it has * to be done there). */ stealth_check_mapping_for_destruct(m); } } void gc_cycle_check_all_mappings(void) { struct mapping *m; for (m = gc_internal_mapping; m; m = m->next) { real_gc_cycle_check_mapping(m, 0); gc_cycle_run_queue(); } } void gc_zap_ext_weak_refs_in_mappings(void) { gc_mark_mapping_pos = first_mapping; while (gc_mark_mapping_pos != gc_internal_mapping && gc_ext_weak_refs) { struct mapping *m = gc_mark_mapping_pos; gc_mark_mapping_pos = m->next; gc_mark_mapping_as_referenced(m); } discard_queue(&gc_mark_queue); } void gc_free_all_unreferenced_mappings(void) { INT32 e; struct keypair *k,**prev; struct mapping *m,*next; struct mapping_data *md; for(m=gc_internal_mapping;m;m=next) { if(gc_do_free(m)) { /* Got an extra ref from gc_cycle_pop(). */ md = m->data; /* Protect against unlink_mapping_data() recursing too far. */ m->data=&empty_data; m->data->refs++; unlink_mapping_data(md); #ifdef MAPPING_SIZE_DEBUG m->debug_size=0; #endif gc_free_extra_ref(m); SET_NEXT_AND_FREE(m, free_mapping); } else { next=m->next; } } } #ifdef PIKE_DEBUG void simple_describe_mapping(struct mapping *m) { char *s; init_buf(); describe_mapping(m,0,2); s=simple_free_buf(); fprintf(stderr,"%s\n",s); free(s); } void debug_dump_mapping(struct mapping *m) { fprintf(stderr, "Refs=%d, next=%p, prev=%p", m->refs, m->next, m->prev); if (((ptrdiff_t)m->data) & 3) { fprintf(stderr, ", data=%p (unaligned)\n", m->data); } else { fprintf(stderr, ", flags=0x%x, size=%d, hashsize=%d\n", m->data->flags, m->data->size, m->data->hashsize); fprintf(stderr, "Indices type field = "); debug_dump_type_field(m->data->ind_types); fprintf(stderr, "\n"); fprintf(stderr, "Values type field = "); debug_dump_type_field(m->data->val_types); fprintf(stderr, "\n"); simple_describe_mapping(m); } } #endif void zap_all_mappings(void) { INT32 e; struct keypair *k; struct mapping *m,*next; struct mapping_data *md; for(m=first_mapping;m;m=next) { add_ref(m); #if defined(PIKE_DEBUG) && defined(DEBUG_MALLOC) if(verbose_debug_exit) debug_dump_mapping(m); #endif md=m->data; for(e=0;e<md->hashsize;e++) { while((k=md->hash[e])) { md->hash[e]=k->next; k->next=md->free_list; md->free_list=k; free_svalue(&k->ind); free_svalue(&k->val); } } md->size=0; #ifdef MAPPING_SIZE_DEBUG if(m->data ==md) m->debug_size=0; #endif next=m->next; /* free_mapping(m); */ } }

pike.git/ src/ mapping.c > 595dac77b8e936f5a59300e0b9ba96cbc5a4f10e [Annotate]