| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2026 Tiger Data, Inc. | ||
| 3 | * Licensed under the PostgreSQL License. See LICENSE for details. | ||
| 4 | * | ||
| 5 | * posting_page.c - Posting list page operations | ||
| 6 | */ | ||
| 7 | |||
| 8 | #include "vs_config.h" | ||
| 9 | |||
| 10 | #include "core/log.h" | ||
| 11 | #include "index/posting_page.h" | ||
| 12 | |||
| 13 | #ifndef VS_STANDALONE | ||
| 14 | #include <miscadmin.h> /* CHECK_FOR_INTERRUPTS */ | ||
| 15 | #endif | ||
| 16 | |||
| 17 | void | ||
| 18 | 3041 | prism_posting_check_count( | |
| 19 | BlockNumber blkno, const PrismPostingPageOpaque *op, Dimension dim) | ||
| 20 | { | ||
| 21 | 3041 | uint32_t cap = prism_posting_page_cap(op, dim); | |
| 22 | |||
| 23 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 3041 times.
|
3041 | if (op->entry_count > cap) |
| 24 | ✗ | vs_error( | |
| 25 | VS_EXTENSION_NAME | ||
| 26 | ": posting page %u has an invalid entry count (%u > %u); " | ||
| 27 | "the index may be corrupted -- REINDEX it", | ||
| 28 | blkno, | ||
| 29 | (unsigned)op->entry_count, | ||
| 30 | cap); | ||
| 31 | 3041 | } | |
| 32 | |||
| 33 | /* ---------------------------------------------------------------- | ||
| 34 | * Paged mode (BLCKSZ pages with PG header + opaque) | ||
| 35 | * ---------------------------------------------------------------- */ | ||
| 36 | |||
| 37 | void | ||
| 38 | 32668 | prism_posting_page_init( | |
| 39 | Page page, uint32_t cluster_id, Dimension dim, uint16_t flags) | ||
| 40 | { | ||
| 41 | 32668 | PageInit(page, BLCKSZ, sizeof(PrismPostingPageOpaque)); | |
| 42 | |||
| 43 | /* First pages have reduced capacity due to pt_centroid */ | ||
| 44 | 65336 | uint32_t max = (flags & PRISM_POSTING_PAGE_FIRST) | |
| 45 | 11964 | ? prism_posting_max_entries_first(dim) | |
| 46 |
2/2✓ Branch 0 taken 11964 times.
✓ Branch 1 taken 20704 times.
|
32668 | : prism_posting_max_entries(dim); |
| 47 | 32668 | PrismPostingPageOpaque *opaque = prism_posting_opaque(page); | |
| 48 | 32668 | opaque->next_blkno = InvalidBlockNumber; | |
| 49 | 32668 | opaque->cluster_id = cluster_id; | |
| 50 | 32668 | opaque->entry_count = 0; | |
| 51 | 32668 | opaque->flags = flags; | |
| 52 | 32668 | opaque->page_id = PRISM_POSTING_PAGE_ID; | |
| 53 | 32668 | opaque->max_entries = (uint16_t)max; | |
| 54 | /* Head metadata starts "not computed"; the first insert fills it (the | ||
| 55 | * fields are only consulted on the FIRST page). */ | ||
| 56 | 32668 | opaque->live_count = 0; | |
| 57 | 32668 | opaque->tail_blkno = InvalidBlockNumber; | |
| 58 | 32668 | } | |
| 59 | |||
| 60 | bool | ||
| 61 | 256832 | prism_posting_page_add( | |
| 62 | Page page, | ||
| 63 | Dimension dim, | ||
| 64 | ItemPointerData tid, | ||
| 65 | float f_add, | ||
| 66 | float f_rescale, | ||
| 67 | float f_error, | ||
| 68 | const uint8_t *bits, | ||
| 69 | uint8_t entry_flags) | ||
| 70 | { | ||
| 71 |
2/2✓ Branch 1 taken 60812 times.
✓ Branch 2 taken 196020 times.
|
256832 | if (!prism_posting_page_has_room(page)) |
| 72 | 2 | return false; | |
| 73 | |||
| 74 | 256830 | PrismPostingPageOpaque *opaque = prism_posting_opaque(page); | |
| 75 | 256830 | uint32_t i = opaque->entry_count; | |
| 76 | 256830 | char *content = prism_posting_page_content(page, dim); | |
| 77 | |||
| 78 | /* Write the entry header (meta + factors) + bits in one contiguous | ||
| 79 | * block at content + i * entry_size. */ | ||
| 80 | 256830 | PrismPostingEntryHeader *hdr = prism_posting_entry_at(content, i, dim); | |
| 81 | 256830 | hdr->meta.tid = tid; | |
| 82 | 256830 | hdr->meta.flags = entry_flags; | |
| 83 | 256830 | hdr->meta.reserved = 0; | |
| 84 | 256830 | hdr->f_add = f_add; | |
| 85 | 256830 | hdr->f_rescale = f_rescale; | |
| 86 | 256830 | hdr->f_error = f_error; | |
| 87 | 256830 | memcpy(hdr->bits, bits, VS_RABITQ_BYTES(dim)); | |
| 88 | |||
| 89 | 256830 | opaque->entry_count = i + 1; | |
| 90 | 256830 | return true; | |
| 91 | } | ||
| 92 | |||
| 93 | /* ---------------------------------------------------------------- | ||
| 94 | * Chain walks | ||
| 95 | * ---------------------------------------------------------------- */ | ||
| 96 | |||
| 97 | void | ||
| 98 | 3688 | prism_posting_chain_walk( | |
| 99 | VsStorage *storage, | ||
| 100 | BlockNumber head, | ||
| 101 | PrismPostingChainCb cb, | ||
| 102 | void *state) | ||
| 103 | { | ||
| 104 | 3688 | PrismPostingChainPos pos = {.storage = storage, .first = true}; | |
| 105 | 3688 | BlockNumber blk = head; | |
| 106 | |||
| 107 |
2/2✓ Branch 0 taken 4392 times.
✓ Branch 1 taken 3688 times.
|
8080 | while (blk != InvalidBlockNumber) |
| 108 | { | ||
| 109 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 3608 times.
|
3608 | CHECK_FOR_INTERRUPTS(); |
| 110 | |||
| 111 | 4392 | pos.blkno = blk; | |
| 112 | 4392 | pos.page = vs_storage_read_page(storage, blk); | |
| 113 | |||
| 114 | /* | ||
| 115 | * Reading next_blkno means casting the special area, so establish | ||
| 116 | * that it is a posting page first -- the same guard every other | ||
| 117 | * page read applies. A chain that leaves posting pages is a | ||
| 118 | * corrupt chain, and ends the walk rather than being followed. | ||
| 119 | */ | ||
| 120 |
1/2✗ Branch 1 not taken.
✓ Branch 2 taken 4392 times.
|
4392 | if (!prism_page_is_posting(pos.page)) |
| 121 | { | ||
| 122 | ✗ | prism_posting_chain_release(&pos); | |
| 123 | ✗ | return; | |
| 124 | } | ||
| 125 | |||
| 126 | 4392 | pos.next = prism_posting_opaque(pos.page)->next_blkno; | |
| 127 | |||
| 128 | 4392 | bool keep_going = cb(&pos, state); | |
| 129 | |||
| 130 | /* No-op when the callback released it already. */ | ||
| 131 | 4392 | prism_posting_chain_release(&pos); | |
| 132 | |||
| 133 |
2/2✓ Branch 0 taken 3608 times.
✓ Branch 1 taken 784 times.
|
4392 | if (!keep_going) |
| 134 | ✗ | return; | |
| 135 | |||
| 136 | 4392 | pos.first = false; | |
| 137 | 4392 | blk = pos.next; | |
| 138 | } | ||
| 139 | } | ||
| 140 | |||
| 141 | void | ||
| 142 | 164 | prism_posting_chain_mutate( | |
| 143 | VsStorage *storage, | ||
| 144 | BlockNumber head, | ||
| 145 | PrismPostingChainMutateCb cb, | ||
| 146 | void *state) | ||
| 147 | { | ||
| 148 | 164 | BlockNumber blk = head; | |
| 149 | |||
| 150 |
2/2✓ Branch 0 taken 417 times.
✓ Branch 1 taken 164 times.
|
581 | while (blk != InvalidBlockNumber) |
| 151 | { | ||
| 152 | 417 | Page page = vs_storage_write_page(storage, blk); | |
| 153 | 417 | PrismPostingPageOpaque *op = prism_posting_opaque(page); | |
| 154 | 417 | BlockNumber next = op->next_blkno; | |
| 155 | |||
| 156 | 417 | cb(op, state); | |
| 157 | |||
| 158 | 417 | vs_storage_commit_page(storage, blk); | |
| 159 | 206 | blk = next; | |
| 160 | } | ||
| 161 | 164 | } | |
| 162 | |||
| 163 | /* ---------------------------------------------------------------- | ||
| 164 | * Flat mode (one buffer per cluster, custom header) | ||
| 165 | * ---------------------------------------------------------------- */ | ||
| 166 | |||
| 167 | void | ||
| 168 | 150 | prism_posting_flat_init(char *buf, uint32_t max_entries, uint32_t cluster_id) | |
| 169 | { | ||
| 170 | 150 | PrismFlatPostingHeader *hdr = prism_flat_posting_header(buf); | |
| 171 | 150 | hdr->max_entries = max_entries; | |
| 172 | 150 | hdr->entry_count = 0; | |
| 173 | 150 | hdr->cluster_id = cluster_id; | |
| 174 | 150 | hdr->_pad = 0; | |
| 175 | 150 | } | |
| 176 | |||
| 177 | bool | ||
| 178 | 10000 | prism_posting_flat_add( | |
| 179 | char *buf, | ||
| 180 | Dimension dim, | ||
| 181 | ItemPointerData tid, | ||
| 182 | float f_add, | ||
| 183 | float f_rescale, | ||
| 184 | float f_error, | ||
| 185 | const uint8_t *bits, | ||
| 186 | uint8_t entry_flags) | ||
| 187 | { | ||
| 188 | 10000 | PrismFlatPostingHeader *flat_hdr = prism_flat_posting_header(buf); | |
| 189 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 10000 times.
|
10000 | if (flat_hdr->entry_count >= flat_hdr->max_entries) |
| 190 | ✗ | return false; | |
| 191 | |||
| 192 | 10000 | uint32_t i = flat_hdr->entry_count; | |
| 193 | 10000 | char *content = prism_flat_posting_content(buf); | |
| 194 | |||
| 195 | 10000 | PrismPostingEntryHeader *hdr = prism_posting_entry_at(content, i, dim); | |
| 196 | 10000 | hdr->meta.tid = tid; | |
| 197 | 10000 | hdr->meta.flags = entry_flags; | |
| 198 | 10000 | hdr->meta.reserved = 0; | |
| 199 | 10000 | hdr->f_add = f_add; | |
| 200 | 10000 | hdr->f_rescale = f_rescale; | |
| 201 | 10000 | hdr->f_error = f_error; | |
| 202 | 10000 | memcpy(hdr->bits, bits, VS_RABITQ_BYTES(dim)); | |
| 203 | |||
| 204 | 10000 | flat_hdr->entry_count = i + 1; | |
| 205 | 10000 | return true; | |
| 206 | } | ||
| 207 |