Performance optimization in the memsys5 memory allocator.

FossilOrigin-Name: 949133231f8f751aa86518d0d3f6f03d7827fec085bfef3929fa3d57369d0216

Small simplification and performance improvement in memsys5Free().

FossilOrigin-Name: 0a9cff5c4822874b74e90bfca3963bc7e5c753a5

Omit performance tracking from the memsys5 memory allocator if neither
SQLITE_DEBUG nor SQLITE_TEST are defined.

FossilOrigin-Name: af5c7714e993f060841f1e893f754ddf3870e6d0

Micro-optimizations and comment fixes on the mem5.c memory allocator module.

FossilOrigin-Name: 8bf5e056eb8beb6e0ed5874fb24d7fe9f0b66d2b

Fix over-length source code lines. No logic changes.

FossilOrigin-Name: 198d191b2f5ef7d63ac0093c701955c9052fd734

Performance optimizations to the sqlite3MallocSize() by requiring the
argument to always be non-NULL.

FossilOrigin-Name: cb65989b0710c65e4df69063b346344fdb1d12c7

Fix typos in comments. No code changes.

FossilOrigin-Name: e62aab5e9290503869e1f4d5e0fefd2b4dee0a69

Avoid a (harmless) buffer overread that is possible on an OOM when
MEMSYS5 is engaged.

FossilOrigin-Name: b3296267fb67b9f59719a37093253062edde3746

In memsys5, initialize new allocations to non-zero bytes. Change the content
of freed allocations to prevent use after free. These changes in SQLITE_DEBUG
only.

FossilOrigin-Name: ba5f0a5599dece6d

In memsys5, initialize new allocations to non-zero bytes. Change the content
of freed allocations to prevent use after free. These changes in SQLITE_DEBUG
only.

FossilOrigin-Name: ba5f0a5599dece6d8f3dfe652800c28875c74a24

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Fix harmless compiler warnings.

FossilOrigin-Name: a12d214ecccc5d3372dbcedc88705b0092363971

A much simpler fix is to simply change MEMSYS5 so that it takes any free
block of the appropriate size (the first on the list of free blocks) rather
than searching for the one with the smallest addre

A much simpler fix is to simply change MEMSYS5 so that it takes any free
block of the appropriate size (the first on the list of free blocks) rather
than searching for the one with the smallest address. This is also faster
than using the min-heap algorithm. Need to research to verify that the
allocator still satisfies the Robson proof, however.

FossilOrigin-Name: 8191b512122c13d7fa61d8e5487652f13ec172f7

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Fix a few more minor comment typos. No changes to code.

FossilOrigin-Name: 9e999081a59b161a0a1f968fbc01a1db9ea43b93

Suppress many harmless compiler warnings, mostly signed/unsigned comparisons
within asserts or unused parameters in extensions.

FossilOrigin-Name: 3eeb0ff78d04891b5fd1a3d99a9fb8cfbed77a81

Minor clean-up of previous mem5 allocator fix.

FossilOrigin-Name: 3643842316239ff7859f0ec522736a2b9c03d22c

Fix issue with mem5 allocator when min request size is larger thatn 2^30.

FossilOrigin-Name: d7dae06fb2d57ed6b9555b774712f42077ae4155

Add evidence mark comments to source code. Add additional information to the
documentation of sqlite3_release_memory(). Fix a minor inefficiency in mem1.c
that was discovered while writing requirem

Add evidence mark comments to source code. Add additional information to the
documentation of sqlite3_release_memory(). Fix a minor inefficiency in mem1.c
that was discovered while writing requirements tests.

FossilOrigin-Name: 53b0c03fd33d2d8141fd386de5493fec64456042

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Add testcase() macros beside each sqlite3_log() call to make sure it is
tested with both logging enable and disabled.

FossilOrigin-Name: 1168763d2cd96acfa0488198e8bc82f0c4fa35a3

Continuing improvements to error reporting and the sqlite3_log() routine.

FossilOrigin-Name: edea3bb740ddd096a46e00678b59d465bb1e2903

Simplifications to the range-scan logic in support of structural testing.

FossilOrigin-Name: bbbee81075d923be7ca11e6e635c069a05d1605a

Move the allocation of the memsys5 mutex into the initializer.

FossilOrigin-Name: 4e377a09c194e90581ef00fd3a213e936b4e648a

Fix obscure issues with the memsys5 memory allocator. Arrange that the
xRealloc() interface to memory allocators is only called with a value
that has been through xRoundup().

FossilOrigin-Name: 577

Fix obscure issues with the memsys5 memory allocator. Arrange that the
xRealloc() interface to memory allocators is only called with a value
that has been through xRoundup().

FossilOrigin-Name: 577bd6f15556b7f6d86ee5167353fdd535577bf6

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When shutting down the memsys5 memory allocator, be sure to clear the mutex
pointer in case the next startup does not use a mutex because it is configured
differently.

FossilOrigin-Name: d4e7e2d8232

When shutting down the memsys5 memory allocator, be sure to clear the mutex
pointer in case the next startup does not use a mutex because it is configured
differently.

FossilOrigin-Name: d4e7e2d82321c12fe471ed49098828bc0ef78543

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Fix a bug in mem5.c which would cause an infinite loop on an attempt
to allocate more than 1073741824 bytes of contiguous memory. Also, some
cleanup of mem5.c. More work to do on this.

FossilOrigi

Fix a bug in mem5.c which would cause an infinite loop on an attempt
to allocate more than 1073741824 bytes of contiguous memory. Also, some
cleanup of mem5.c. More work to do on this.

FossilOrigin-Name: 783b751a38f9f911c5ebdf738c255b7111978f76

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Fix some compiler warnings that show up when building the amalgamation only. (CVS 5927)

FossilOrigin-Name: d1abe8a1c9a990b02c71d6c249436381c9fde443

Fix a few more compiler warnings. (CVS 5926)

FossilOrigin-Name: 70b2f6839ca97dfc08f72875283f5c75c8fcf0cc