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pmap-gen.c
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/* -*- linux-c -*- * pmap API generator * Copyright (C) 2005-2016 Red Hat Inc. * * This file is part of systemtap, and is free software. You can * redistribute it and/or modify it under the terms of the GNU General * Public License (GPL); either version 2, or (at your option) any * later version. */ /** @file pmap-gen.c * @brief Pmap function generator * This file is a template designed to be included as many times as * needed to generate the necessary pmap functions. It is only included * indirectly by map-gen.c, so all the shared #defines are in place. */ /* returns 1 on match, 0 otherwise */ static int KEYSYM(pmap_key_cmp) (struct map_node *m1, struct map_node *m2) { struct KEYSYM(map_node) *n1 = KEYSYM(get_map_node)(m1); struct KEYSYM(map_node) *n2 = KEYSYM(get_map_node)(m2); if (KEY1_EQ_P(n1->key1, n2->key1) #if KEY_ARITY > 1 && KEY2_EQ_P(n1->key2, n2->key2) #if KEY_ARITY > 2 && KEY3_EQ_P(n1->key3, n2->key3) #if KEY_ARITY > 3 && KEY4_EQ_P(n1->key4, n2->key4) #if KEY_ARITY > 4 && KEY5_EQ_P(n1->key5, n2->key5) #if KEY_ARITY > 5 && KEY6_EQ_P(n1->key6, n2->key6) #if KEY_ARITY > 6 && KEY7_EQ_P(n1->key7, n2->key7) #if KEY_ARITY > 7 && KEY8_EQ_P(n1->key8, n2->key8) #if KEY_ARITY > 8 && KEY9_EQ_P(n1->key9, n2->key9) #endif #endif #endif #endif #endif #endif #endif #endif ) return 1; else return 0; } /* copy keys for m2 -> m1 */ static void KEYSYM(pmap_copy_keys) (struct map_node *m1, struct map_node *m2) { struct KEYSYM(map_node) *dst = KEYSYM(get_map_node)(m1); struct KEYSYM(map_node) *src = KEYSYM(get_map_node)(m2); #if KEY1_TYPE == STRING str_copy (dst->key1, src->key1); #else dst->key1 = src->key1; #endif #if KEY_ARITY > 1 #if KEY2_TYPE == STRING str_copy (dst->key2, src->key2); #else dst->key2 = src->key2; #endif #if KEY_ARITY > 2 #if KEY3_TYPE == STRING str_copy (dst->key3, src->key3); #else dst->key3 = src->key3; #endif #if KEY_ARITY > 3 #if KEY4_TYPE == STRING str_copy (dst->key4, src->key4); #else dst->key4 = src->key4; #endif #if KEY_ARITY > 4 #if KEY5_TYPE == STRING str_copy (dst->key5, src->key5); #else dst->key5 = src->key5; #endif #if KEY_ARITY > 5 #if KEY6_TYPE == STRING str_copy (dst->key6, src->key6); #else dst->key6 = src->key6; #endif #if KEY_ARITY > 6 #if KEY7_TYPE == STRING str_copy (dst->key7, src->key7); #else dst->key7 = src->key7; #endif #if KEY_ARITY > 7 #if KEY8_TYPE == STRING str_copy (dst->key8, src->key8); #else dst->key8 = src->key8; #endif #if KEY_ARITY > 8 #if KEY9_TYPE == STRING str_copy (dst->key9, src->key9); #else dst->key9 = src->key9; #endif #endif #endif #endif #endif #endif #endif #endif #endif } /* update the keys and value of a map_node */ static void KEYSYM(pmap_update_node) (MAP m, struct map_node *m1, struct map_node *m2, int add) { struct KEYSYM(map_node) *src, * dst = KEYSYM(get_map_node)(m1); if (!m2) { MAP_COPY_VAL(m, dst, NULLRET, 0); return; } src = KEYSYM(get_map_node)(m2); if (!add) KEYSYM(pmap_copy_keys)(m1, m2); MAP_COPY_VAL(m, dst, MAP_GET_VAL(src), add); } #if VALUE_TYPE == INT64 || VALUE_TYPE == STRING static PMAP KEYSYM(_stp_pmap_new) (unsigned max_entries, int wrap) { PMAP pmap = _stp_pmap_new (max_entries, wrap, sizeof(struct KEYSYM(map_node))); return pmap; } #else /* * _stp_pmap_new* () * @param max_entries (KEY_MAPENTRIES and associated parameter) * @param wrap (KEY_STAT_WRAP) * @param htype (KEY_HIST_TYPE and associated parameters) * @param stat_ops (STAT_OP_* and associated parameter for STAT_OP_VARIANCE)) */ static PMAP KEYSYM(_stp_pmap_new) (int first_arg, ...) { int start=0, stop=0, interval=0, bit_shift=0; int max_entries=0, wrap=0, stat_ops=0, htype=0; int arg = first_arg; PMAP pmap; va_list ap; va_start (ap, first_arg); do { switch (arg) { case KEY_MAPENTRIES: max_entries = va_arg(ap, int); break; case KEY_STAT_WRAP: wrap = 1; break; case KEY_HIST_TYPE: htype = va_arg(ap, int); if (htype == HIST_LINEAR) { start = va_arg(ap, int); stop = va_arg(ap, int); interval = va_arg(ap, int); } break; case STAT_OP_COUNT: stat_ops |= STAT_OP_COUNT; break; case STAT_OP_SUM: stat_ops |= STAT_OP_SUM; break; case STAT_OP_MIN: stat_ops |= STAT_OP_MIN; break; case STAT_OP_MAX: stat_ops |= STAT_OP_MAX; break; case STAT_OP_AVG: stat_ops |= STAT_OP_AVG; break; case STAT_OP_VARIANCE: stat_ops |= STAT_OP_VARIANCE; bit_shift = va_arg(ap, int); break; default: _stp_warn ("Unknown argument %d\n", arg); } arg = va_arg(ap, int); } while (arg); va_end (ap); switch (htype) { case HIST_NONE: pmap = _stp_pmap_new_hstat (max_entries, wrap, sizeof(struct KEYSYM(map_node))); if (pmap) { pmap->bit_shift = bit_shift; pmap->stat_ops = stat_ops; } break; case HIST_LOG: pmap = _stp_pmap_new_hstat_log (max_entries, wrap, sizeof(struct KEYSYM(map_node))); break; case HIST_LINEAR: pmap = _stp_pmap_new_hstat_linear (max_entries, wrap, sizeof(struct KEYSYM(map_node)), start, stop, interval); break; default: _stp_warn ("Unknown histogram type %d\n", htype); pmap = NULL; } return pmap; } #endif /* VALUE_TYPE */ static int KEYSYM(_stp_pmap_set) (PMAP pmap, ALLKEYSD(key), VSTYPE val) { int res; MAP m = _stp_pmap_get_map (pmap, MAP_GET_CPU()); res = KEYSYM(__stp_map_set) (m, ALLKEYS(key), val, 0, 1, 1, 1, 1, 1); MAP_PUT_CPU(); return res; } static inline int KEYSYM(_stp_pmap_add) (PMAP pmap, ALLKEYSD(key), VSTYPE val, int s1, int s2, int s3, int s4, int s5) { int res; MAP m = _stp_pmap_get_map (pmap, MAP_GET_CPU()); m->bit_shift = pmap->bit_shift; m->stat_ops = pmap->stat_ops; res = KEYSYM(__stp_map_set) (m, ALLKEYS(key), val, 1, s1, s2, s3, s4, s5); MAP_PUT_CPU(); return res; } static VALTYPE KEYSYM(_stp_pmap_get_cpu) (PMAP pmap, ALLKEYSD(key)) { unsigned int hv; struct mhlist_head *head; struct mhlist_node *e; struct KEYSYM(map_node) *n; VALTYPE res; MAP map; map = _stp_pmap_get_map (pmap, MAP_GET_CPU()); hv = KEYSYM(hash) (ALLKEYS(key)) & map->hash_table_mask; head = &map->hashes[hv]; mhlist_for_each_entry(n, e, head, node.hnode) { if (KEY_EQ_P(n)) { res = MAP_GET_VAL(n); MAP_PUT_CPU(); return res; } } /* key not found */ MAP_PUT_CPU(); return NULLRET; } static VALTYPE KEYSYM(_stp_pmap_get) (PMAP pmap, ALLKEYSD(key)) { unsigned int hv; int cpu, clear_agg = 0; struct mhlist_head *head, *ahead; struct mhlist_node *e; struct KEYSYM(map_node) *n; struct map_node *anode = NULL; MAP map, agg; hv = KEYSYM(hash) (ALLKEYS(key)); /* first look it up in the aggregation map */ agg = _stp_pmap_get_agg(pmap); ahead = &agg->hashes[hv & agg->hash_table_mask]; mhlist_for_each_entry(n, e, ahead, node.hnode) { if (KEY_EQ_P(n)) { anode = &n->node; clear_agg = 1; break; } } /* now total each cpu */ for_each_possible_cpu(cpu) { map = _stp_pmap_get_map (pmap, cpu); head = &map->hashes[hv & map->hash_table_mask]; mhlist_for_each_entry(n, e, head, node.hnode) { if (KEY_EQ_P(n)) { if (anode == NULL) { anode = _stp_new_agg(agg, ahead, &n->node, KEYSYM(pmap_update_node)); } else { if (clear_agg) { KEYSYM(pmap_update_node)(agg, anode, NULL, 0); clear_agg = 0; } KEYSYM(pmap_update_node)(agg, anode, &n->node, 1); } } } } if (anode && !clear_agg) return MAP_GET_VAL(KEYSYM(get_map_node)(anode)); /* key not found */ return NULLRET; } static MAP KEYSYM(_stp_pmap_agg) (PMAP pmap) { return _stp_pmap_agg(pmap, KEYSYM(pmap_update_node), KEYSYM(pmap_key_cmp)); } static int KEYSYM(_stp_pmap_del) (PMAP pmap, ALLKEYSD(key)) { unsigned int hv; int cpu; MAP m; /* Get the key's hash */ if (KEYSYM(keycheck) (ALLKEYS(key)) == 0) return -1; hv = KEYSYM(hash) (ALLKEYS(key)); /* Delete in each cpu's map */ for_each_possible_cpu(cpu) { m = _stp_pmap_get_map (pmap, cpu); (void)KEYSYM(_stp_map_del_hash) (m, hv & m->hash_table_mask, ALLKEYS(key)); } /* Note that we don't need to delete the aggregate's value, * since it isn't "live" between statements. */ return 1; }