Size reduction and performance increase in the pageFindSlot() routine of

btree.c.

FossilOrigin-Name: 5d247e38560b97975568e8a48324acaca1002ec2ef7fa3efc9c8aa7d83412aad

diff --git a/manifest b/manifest
index bec949f30c8d005c8b85182d3cd42d2f3a5121b4..06040bca47216d426a7a60a5b442442dd7a28db3 100644 (file)
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Size\sreduction\sand\sperformance\sincrease\sin\sthe\sfreeSpace()\sroutine\sof\sbtree.c.
-D 2022-07-07T20:11:35.233
+C Size\sreduction\sand\sperformance\sincrease\sin\sthe\spageFindSlot()\sroutine\sof\nbtree.c.
+D 2022-07-07T20:29:49.982
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -510,7 +510,7 @@ F src/auth.c f4fa91b6a90bbc8e0d0f738aa284551739c9543a367071f55574681e0f24f8cf
 F src/backup.c a2891172438e385fdbe97c11c9745676bec54f518d4447090af97189fd8e52d7
 F src/bitvec.c 7c849aac407230278445cb069bebc5f89bf2ddd87c5ed9459b070a9175707b3d
 F src/btmutex.c 8acc2f464ee76324bf13310df5692a262b801808984c1b79defb2503bbafadb6
-F src/btree.c 4cba0082bd53caf0897b743ed28b0e4c588c3c79a785042fab63cbdd41184807
+F src/btree.c 6599d972b674cbbcb76e9a9db0e206d3bf9b60186464c08ef82ab6fda0622d44
 F src/btree.h 74d64b8f28cfa4a894d14d4ed64fa432cd697b98b61708d4351482ae15913e22
 F src/btreeInt.h 8ce1332edd89dfd2461d561ac10a0ab5601c8e06200cb5230596c3caaf54482e
 F src/build.c 23f874642825d7eaaeeb7a3281b2b1a75e1d4c4dd9ae4dceddcd908266634214
@@ -1979,8 +1979,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 61e2094afbbcbd5fdf5c3ec06b96134fafb7b854dc9bfa7d0619bed6d35efbe4
-R 6b7426ab3817b569b11bfb68e4612c05
+P 7d7aed053f600659c63d8bac6d5da77879936c3fc57bfd058a4943b3bc530575
+R 573750a14fc9838f7267df2add226c79
 U drh
-Z e6c220e352c0a10417bd5db52eaf6a42
+Z 6e9989a326ed7411def6db942d22ad53
 # Remove this line to create a well-formed Fossil manifest.

diff --git a/manifest.uuid b/manifest.uuid
index 7dad21dffdcfb67603e314f4c6d3b26b1bd62d3f..5f4865c9bde5d0be56b2c72cacd065046401a492 100644 (file)
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-7d7aed053f600659c63d8bac6d5da77879936c3fc57bfd058a4943b3bc530575
\ No newline at end of file
+5d247e38560b97975568e8a48324acaca1002ec2ef7fa3efc9c8aa7d83412aad
\ No newline at end of file

diff --git a/src/btree.c b/src/btree.c
index 97a5c9e527680918e6fdbfc704ad1730e698dcd1..2d2a20cd52a0cbecdcd1af3692d1098197e0382d 100644 (file)
--- a/src/btree.c
+++ b/src/btree.c
@@ -1673,9 +1673,9 @@ static u8 *pageFindSlot(MemPage *pPg, int nByte, int *pRc){
     iAddr = pc;
     pTmp = &aData[pc];
     pc = get2byte(pTmp);
-    if( pc<=iAddr+size ){
+    if( pc<=iAddr ){
       if( pc ){
-        /* The next slot in the chain is not past the end of the current slot */
+        /* The next slot in the chain comes before the current slot */
         *pRc = SQLITE_CORRUPT_PAGE(pPg);
       }
       return 0;