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Overview
| Comment: | Merge latest mutexfree-shmlock changes into this branch. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | begin-concurrent-pnu-mutexfree-shmlock |
| Files: | files | file ages | folders |
| SHA3-256: |
186b376ec3713f9c8a1499a9675b3c1b |
| User & Date: | dan 2018-12-10 16:53:32 |
Context
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2018-12-10
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| 16:53 | Merge latest mutexfree-shmlock changes into this branch. Leaf check-in: 186b376e user: dan tags: begin-concurrent-pnu-mutexfree-shmlock | |
| 16:52 | Make SQLITE_MFS_NSHARD a compile time setting. check-in: b9a74151 user: dan tags: mutexfree-shmlock | |
| 15:58 | Merge the latest version of mutexfree-shmlock with this branch. check-in: 6007abfe user: dan tags: begin-concurrent-pnu-mutexfree-shmlock | |
Changes
Changes to src/os_unix.c.
44 44 ** plus implementations of sqlite3_os_init() and sqlite3_os_end(). 45 45 */ 46 46 #include "sqliteInt.h" 47 47 #if SQLITE_OS_UNIX /* This file is used on unix only */ 48 48 49 49 /* Turn this feature on in all builds for now */ 50 50 #define SQLITE_MUTEXFREE_SHMLOCK 1 51 -#define SQLITE_MFS_NSHARD 5 52 51 #define SQLITE_MFS_EXCLUSIVE 255 52 +#ifndef SQLITE_MFS_NSHARD 53 +# define SQLITE_MFS_NSHARD 8 54 +#endif 55 +#if SQLITE_MFS_NSHARD<1 56 +# error "SQLITE_MFS_NSHARD must be greater than 0" 57 +#endif 53 58 54 59 /* 55 60 ** There are various methods for file locking used for concurrency 56 61 ** control: 57 62 ** 58 63 ** 1. POSIX locking (the default), 59 64 ** 2. No locking,