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Author SHA1 Message Date
drh
7d70571142 Merge the latest trunk enhancements into the json-opt branch. 
FossilOrigin-Name: 00bfc4918be49ac74a3e7851c88ab7ec226e6a37853f8ad4c77f758751960456
 2023-07-24 12:37:23 +00:00
stephan
479cfd5af3 When writing the filename header in a opfs-sahpool file, ensure that all remaining bytes in that part of the header are zeroed out to avoid the downstream problems reported in [forum:d50ec48a293988a5|forum post d50ec48a293988a5]. 
FossilOrigin-Name: c1b080e39397c983c13a5e79303223827de7b4946c18a79396851ec1814782f3
 2023-07-23 22:14:41 +00:00
stephan
2ecadd8869 Add the opfs-sahpool sqlite3_vfs implementation to JS, offering an alternative to the other OPFS VFS (with tradeoffs). 
FossilOrigin-Name: d2e602cda44bf35e76167143262b4f91826d25780d0e095e680a31d5dedb2018
 2023-07-22 19:57:42 +00:00
dan
2159292ce0 Integrate contentless delete with auto-merge. 
FossilOrigin-Name: 85c1589ab1fc69d1eef4bbc1bdefa2b10af5f6b9c08e813130b93829b592f416
 2023-07-22 19:47:46 +00:00
drh
5d03b1610f Do not read past the end of a text buffer looking for a zero terminator, as 
that space might not be initialized.  If the buffer is owned, just set the
null terminator.  This is a better fix for the OSSFuzz-detected
use-of-initialized-value problem.

FossilOrigin-Name: 931bccb0cc290b8bf3027641e7a7fac30e3244d7dc84aa9e38b24b7e9544ca06
 2023-07-22 16:37:28 +00:00
drh
61a5b6e3bc Fix a harmless use-of-initialized-value warning from OSSFuzz that results 
from recent large string optmizations.

FossilOrigin-Name: 1a6b3dd1c40277a0d0f0bb562ddc4868aadd632fc2d29be1b17bb33fc22c46c8
 2023-07-22 15:21:41 +00:00
drh
b2ee272075 Performance enhancements for queries using very large string values. 
FossilOrigin-Name: 3661b9cd98565ea23b0cafd030668f09885dcbd54eb12b7b3cd85c289aef4c3c
 2023-07-21 22:28:34 +00:00
drh
21f22f9088 Mark an unreachable branch as NEVER(). 
FossilOrigin-Name: 414a4d660c3b505640227066b468db1268fcb1bd3fad931644a769617c6c00cd
 2023-07-21 22:22:13 +00:00
dan
330e36c2c6 Fix fts5 incremental optimization so that it too can handle an index that consists of a single segment with one or more tombstone hash pages. 
FossilOrigin-Name: e61c9b083f5e0b6b6ee18f9394581ad816f445dbfb72ed1fe954f4182755a576
 2023-07-21 21:10:33 +00:00
dan
4e0c157d02 Ensure the fts5 'optimize' command correctly rewrites any index that consists of a single segment and one or more tombstone hash pages. 
FossilOrigin-Name: f4926006b371d9a1439a25384bd50a50c2f1c03f75a7c2c3134ae72abb971c91
 2023-07-21 19:33:35 +00:00
drh
89f07b1276 Fix harmless compiler warning introduced by the previous check-in. 
FossilOrigin-Name: 06f829e9e57c5aa495f519ad7bb379be611e8e21ef60d36e63d055e45f7a6117
 2023-07-21 19:17:26 +00:00
drh
028acd974f Avoid a potentially large strlen() in sqlite3DecOrHexToI64(). 
FossilOrigin-Name: 5413b02bb629b9cbb76f7e688e94ebcf24276c01436d3feb73ff57c036e1d2aa
 2023-07-21 18:38:59 +00:00
drh
569700a72e Further improvements to large string handling in relation to JSON. 
FossilOrigin-Name: 1e5df0aa3dae5cadbf1d07c718ae2a5212543300b68e49d35e8c96855a7f619c
 2023-07-21 18:09:07 +00:00
drh
eee8687a9f Fix harmless compiler warning about signed/unsigned comparison. 
FossilOrigin-Name: 75cc3c89ee2dcfefa9421ce60bee77e85d2895918e8c5cfd05c434f8932a99b5
 2023-07-21 15:07:56 +00:00
drh
7a2280fe65 Multiple optimizations that try to preserve or infer the zero-terminated 
property of TEXT values.  Avoid unnecessary copying of text values destined
to become function parameters.  All changes help improve performance of
doing UPDATEs on large JSON values that are indexed multiple ways.

FossilOrigin-Name: d0278cdedfa04fb0b61838ab9622be8a2c462f58d5c3ebc4c5f802a727d0974e
 2023-07-21 15:01:53 +00:00
drh
c8f4fec2de More infrastructure changes towards improving JSON cache performance. 
Incremental check-in.

FossilOrigin-Name: 1955e66cfc4614df97b8d68b0e662f309513d62dc8aeec71af5a54e66b79c707
 2023-07-21 11:09:53 +00:00
stephan
bfe6dd0100 Minor internal cleanups in the opfs-sahpool VFS. 
FossilOrigin-Name: 74ad31e2908af8225b7aa527dbcd1877423d58163e365317a78453b31e322ea3
 2023-07-21 10:51:35 +00:00
stephan
3068d6622e Internal cleanups in the async part of the JS library bootstrap phase. 
FossilOrigin-Name: b6d57ab63793241a500ea527c5b3216c54b3ff1972d3adbbf42a9a53bfec0aa1
 2023-07-21 09:10:42 +00:00
stephan
35325a37ce Minor internal cleanups in JS code. 
FossilOrigin-Name: 21a2ca9fc46bf746874579897872e2a45cb07f278abb670dd22b122f7d6a9a6c
 2023-07-20 23:25:32 +00:00
dan
3a51f8c307 Fix some divide-by-zero errors that could occur when handling corrupt tombstone hash records. 
FossilOrigin-Name: 7567ca0676f0d45026f5cd4f3fbcd09119c2eaab8ec1711499609c16c452b5e4
 2023-07-20 20:29:56 +00:00
dan
d6f5aa824e Avoid an infinite loop that could be entered when dealing with corrupt fts5 tombstone hash pages. 
FossilOrigin-Name: 69ce2ce035279f2a00c2238187cf4d2a9092c3410f5900e4613fe4e46311169e
 2023-07-20 20:09:26 +00:00
drh
51d7869096 Experimental framework upon which to build a better JSON parse structure that 
supports cached of modified JSON.  All of these changes are tentative and
subject to change or removal.  Incremental check-in.

FossilOrigin-Name: e384163a4763c10b5838cbf28f9c4d8ea799bbbed6e890e8aa91b2bd1458646d
 2023-07-20 17:45:09 +00:00
dan
0b3791b537 Add tests and fixes for the new code on this branch. 
FossilOrigin-Name: 5aac50e92e956b15367c75c20c17bc1c75e84e2752bfffe4ad0a266cb9bd3b8a
 2023-07-20 16:07:04 +00:00
stephan
0b518b8d65 Filter the OPFS VFSes out of the sqlite3-node.mjs build. Add another level of subdirectory to the sahpool to later enable transparent support of client-provided files under the VFS's root dir. Rework the awkward sahpool-via-oo1 mapping. 
FossilOrigin-Name: 080a4d0aba30d8f3802b49be4a113205f069b3bdea8cebf525d654055642ff62
 2023-07-20 09:06:42 +00:00
drh
f9bfc32b73 Performance enhancements to the JSON parser and code generator. 
FossilOrigin-Name: 0a745897d66e9f36ea6e787fad54f0c413d52c226dc96fad36ccd33a0aa1930e
 2023-07-19 23:02:45 +00:00
drh
93b3c1f398 Revise the new JSON parser performance test to make the test run 25 times 
longer, and thus provide a more repeatable number.

FossilOrigin-Name: bee9e403ae47103938aabb9a7a7e120dfa741b464875965e58788a51fa56a8fe
 2023-07-19 20:23:34 +00:00
drh
5e4d77fa88 Describe JSON parser performance testing procedure in test/json/README.md 
FossilOrigin-Name: c47056e158073ee746c233dd2729cf224ea9e38821b15aa71ebf97607e602281
 2023-07-19 19:23:30 +00:00
dan
d1fbaa071b Fix various issues with code added to this branch. 
FossilOrigin-Name: 8d09011fa2c6ae9cc88e1766f9aad4578efbf9e0e311b8c6efdffe7a3f88f923
 2023-07-19 18:47:02 +00:00
stephan
55f318e53f More internal refactoring and docs for opfs-sahpool. 
FossilOrigin-Name: 64ccf6177a019eab46fb3345ad1e8ba80eaf2c9da55767031f9f04ccd16afb4d
 2023-07-19 17:47:02 +00:00
stephan
96cb7007a9 Update the development-over-ssh docs for the wasm build. 
FossilOrigin-Name: 500109bd0a4c134b91c37f397ff1ee828e09c17f7ecd153f975ede748caee7bb
 2023-07-19 17:46:28 +00:00
drh
50834d8b74 Further improvement to JSON parser performance. 
FossilOrigin-Name: 144c8ccf6e5bb2527dd98742f0d67e0a16c627e7c67f754ce8ed4c4fb5b8d8b6
 2023-07-19 17:24:36 +00:00
drh
8376ae7295 Further performance enhancements to JSON parsing and rendering. Total 
performance gain for large JSONs so far on this branch is about 11%.

FossilOrigin-Name: adb4d6b007cbe9d7c9670f5fc196443ebe0f3a89df1f3290ba6247fcf83fe5bd
 2023-07-19 15:06:29 +00:00
drh
7a816e771a Performance optimization for parsing large JSONs that contain lots of text. 
FossilOrigin-Name: c9fbe0185cd5d64950724b00cd0bfb3a7939a985040465a0f35f445acb6e94a6
 2023-07-19 13:50:31 +00:00
stephan
eafb4418a0 Major restructuring of opfs-sahpool to improve maintainability and hopefully make it easier to reuse these pieces in the upcoming JSPI-based VFS experiment. 
FossilOrigin-Name: 534481cd0c2e6f62dd0a82f25d4b78fdcc671eb70d6966693c98212a6420891c
 2023-07-19 13:31:29 +00:00
stephan
cd302a5e32 Appearance and legibility improvements for tester1.js. 
FossilOrigin-Name: 4fd3ed1b6405f690825c9993e56b199d4a7fb497cf9131815c803150b8b96528
 2023-07-19 11:33:52 +00:00
drh
37fd50df1f Two minor improvements to sum(), one of which was inspired by 
[forum:/forumpost/af5be98dbc|forum post af5be98dbc].

FossilOrigin-Name: a0d3e7571aded8d1e03908059d2d5aa5d62ec49bff099cb38f6f35df5e4b18b5
 2023-07-19 09:52:10 +00:00
stephan
780bc4c557 Internal refactoring in opfs-sahpool. Move OPFS tests to the end of tester1.c-cpp.js. 
FossilOrigin-Name: 6bd5a7413dd830ca41b587a2826fb599a2196fb0186646a2333500f950b3cf4d
 2023-07-19 08:18:25 +00:00
drh
9246c85b61 Do not use the [/info/609fbb94b8f01d67|viewscan optimization] on a query 
that has only a single loop, as the cost adjustments can cause problems
for outer queries.  Proposed fix for the performance regression reported by
[forum:/forumpost/64d36440e473516c|forum post 64d36440e473516c].

FossilOrigin-Name: 76152ad2ffe56034f2fd93d9a1ce9358e1677a7e9cd3dcd9f3a34a5c956a463e
 2023-07-18 21:06:19 +00:00
drh
6a9be2cbc7 Improved ".wheretrace" for the VIEWSCAN optimization. 
FossilOrigin-Name: 27057ea76b5f72c73fb6f16094736685019643c665b49fd0bb8d60a812ce2338
 2023-07-18 20:41:09 +00:00
dan
d05bf0fe61 Fix various problems with fts5 contentless_delete=1 tables. 
FossilOrigin-Name: 0d005112b8aca9e9eca9d86d5fed9168f6a0218fd290b5489b9e7b05714610f4
 2023-07-18 19:52:32 +00:00
stephan
aed5abcc0f More opfs-sahpool tests. 
FossilOrigin-Name: 60713fa9c4627ef17e0b8778eee37913d2b930c5a06414721a00af30e1395090
 2023-07-18 19:47:19 +00:00
stephan
0649a1a05d Fix a shadowed var in opfs-sahpool and add more tests. 
FossilOrigin-Name: 9c8a73aff0f291e0c18072372e0d8961d3a05910489598d0d342227d99871954
 2023-07-18 19:27:11 +00:00
stephan
b0dd9d427f Further refactoring of opfs-sahpool and start integrating it into tester1.c-pp.js. 
FossilOrigin-Name: 91c789234963b660ae900f0738906b28a477993709e286d8125b2f4d6101601c
 2023-07-18 18:52:41 +00:00
drh
3f47e7551c Merge the FTS5 memory leak fix from trunk. 
FossilOrigin-Name: fb65cb73d7ea22a8b20dccfa3abdaaa809eee4fcee6fe4846bd2e598ceb49aa4
 2023-07-18 17:43:47 +00:00
dan
a5b1f34125 Fix memory leak in fts5 introduced by [def41225]. 
FossilOrigin-Name: 4dcad2db743fdb9ef72871ca5a4d1384f76cb697161b0f5110e2670a83a18e8a
 2023-07-18 16:29:34 +00:00
stephan
d69e6e6efb Major restructuring of the opfs-sahpool bits to better support multiple instances per app (each sandboxed from each other). Eliminate the pesky promise resolution race condition when two such instances are loaded in parallel. 
FossilOrigin-Name: 95e5fa498f71708caeb3394636c4853530a8b2d54406e503f32750732d6815d5
 2023-07-18 16:24:51 +00:00
dan
cb1d6b997e Merge trunk changes with this branch. 
FossilOrigin-Name: 5f66eb4e2603278dcc9dbfe4bf506cba1aa03180cfb492a0dfc3a8be32cc994b
 2023-07-18 13:55:55 +00:00
dan
263a8e8c0a Fix a buffer overrun in fts5 that could occur in 'secure-delete' mode when dealing with corrupt database records. 
FossilOrigin-Name: def41225b2f10b0294ab506f28bc87873688d4030f7056839298ff18e058ece5
 2023-07-18 13:55:19 +00:00
stephan
dec4cea24c Refactor opfs-sahpool to support multiple instances, each with a separate VFS name and directory. 
FossilOrigin-Name: d036eaf6ac60c576428db40f015733c5d5425f7d613194fd8d9d4d98659077c4
 2023-07-18 12:09:16 +00:00
dan
2cccced140 Fix cases where a row is inserted into a contentless_delete=1 fts5 table and then deleted within the same transaction. 
FossilOrigin-Name: d928856a226fb7f001e55ff7e8eb58a656b982f1efa811de46c382b8b7cd778c
 2023-07-17 18:40:39 +00:00