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Comment:Enhance the description of the SQLITE_ENABLE_LOCKING_STYLE option in compile.html.
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SHA1: 523d4bcf07c7ed808e1de05134ff48d32d4e9126
User & Date: dan 2008-09-04 09:26:47
Context
2008-09-04
17:09
Add documentation for SQLITE_DEFAULT_MEMSTATUS to compile.html. check-in: 1445db0dec user: dan tags: trunk
09:26
Enhance the description of the SQLITE_ENABLE_LOCKING_STYLE option in compile.html. check-in: 523d4bcf07 user: dan tags: trunk
2008-09-02
21:34
Add the threadsafe.html document and related documentation changes. check-in: 44c2594627 user: drh tags: trunk
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  compiled with this option, then the CLI provides an extra command
  named ".iotrace" that provides a low-level log of I/O activity.
  This option is experimental and may be discontinued in a future release.
}

COMPILE_OPTION {SQLITE_ENABLE_LOCKING_STYLE} {
  This option enables additional logic in the OS interface layer for
  Mac OS X.  The additional logic attempts to determine the type of the
  underlying filesystem and choose and alternative locking strategy
  that works correctly for that filesystem type.

































}

COMPILE_OPTION {SQLITE_ENABLE_MEMORY_MANAGEMENT} {
  This option adds extra logic to SQLite that allows it to release unused
  memory upon request.  This option must be enabled in order for the
  [sqlite3_release_memory()] interface to work.  If this compile-time
  option is not used, the [sqlite3_release_memory()] interface is a 







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  compiled with this option, then the CLI provides an extra command
  named ".iotrace" that provides a low-level log of I/O activity.
  This option is experimental and may be discontinued in a future release.
}

COMPILE_OPTION {SQLITE_ENABLE_LOCKING_STYLE} {
  This option enables additional logic in the OS interface layer for
  Mac OS X. The additional logic attempts to determine the type of the
  underlying filesystem and choose and alternative locking strategy
  that works correctly for that filesystem type. Five locking strategies 
  are available:

  <ul>
    <li> Posix locking style. This is the default locking style and the
         style used by other (non OSX) unixes. Locks are obtained and 
         released using the fcntl() system call.

    <li> AFP locking style. This locking style is used for network file 
         systems that use the AFP (Apple Filing Protocol) protocol. Locks
         are obtained by calling the library function _AFPFSSetLock().

    <li> Flock locking style. This is used for file-systems that do not
         support posix locking style. Locks are obtained and released using
         the flock() system call.

    <li> Dot-file locking style. This locking style is used when neither
         flock nor posix locking styles are supported by the file system.
         Database locks are obtained by creating and entry in the file-system
         at a well-known location relative to the database file (a "dot-file")
         and relinquished by deleting the same file.

    <li> No locking style. If none of the above can be supported, this 
         locking style is used. No database locking mechanism is used. When
         this system is used it is not safe for a single database to be
         accessed by multiple clients.
  </ul>

  Additionally, five extra VFS implementations are provided as well as the
  default. By specifying one of the extra VFS implementations 
  when calling [sqlite3_open_v2()], an application may bypass the file-system
  detection logic and explicitly select one of the above locking styles. The
  five extra VFS implementations are called "unix-posix", "unix-afp",
  "unix-flock", "unix-dotfile" and "unix-none".
}

COMPILE_OPTION {SQLITE_ENABLE_MEMORY_MANAGEMENT} {
  This option adds extra logic to SQLite that allows it to release unused
  memory upon request.  This option must be enabled in order for the
  [sqlite3_release_memory()] interface to work.  If this compile-time
  option is not used, the [sqlite3_release_memory()] interface is a