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Remove the SQLITE_MUTEX_APPDEF compile-time option. The SQLITE_THREADSAFE=0

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option always removes all mutex code.  For application-defined mutexes only,
use SQLITE_THREADSAFE=1 with SQLITE_MUTEX_NOOP=1.  Ticket #3421. (CVS 5779)

FossilOrigin-Name: 02a12eb1cfe9307c66556105a1a99d657cc01ab5
This commit is contained in:
drh
2008-10-07 15:25:48 +00:00
parent 3d9cf5177f
commit 18472fa7b8
24 changed files with 322 additions and 242 deletions
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56
src/mutex.h
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@@ -19,28 +19,21 @@
** Source files should #include the sqliteInt.h file and let that file
** include this one indirectly.
**
** $Id: mutex.h,v 1.8 2008/06/26 10:41:19 danielk1977 Exp $
** $Id: mutex.h,v 1.9 2008/10/07 15:25:48 drh Exp $
*/
#ifdef SQLITE_MUTEX_APPDEF
/*
** If SQLITE_MUTEX_APPDEF is defined, then this whole module is
** omitted and equivalent functionality must be provided by the
** application that links against the SQLite library.
*/
#else
/*
** Figure out what version of the code to use. The choices are
**
** SQLITE_MUTEX_NOOP For single-threaded applications that
** do not desire error checking.
** SQLITE_MUTEX_OMIT No mutex logic. Not even stubs. The
** mutexes implemention cannot be overridden
** at start-time.
**
** SQLITE_MUTEX_NOOP_DEBUG For single-threaded applications with
** error checking to help verify that mutexes
** are being used correctly even though they
** are not needed. Used when SQLITE_DEBUG is
** defined on single-threaded builds.
** SQLITE_MUTEX_NOOP For single-threaded applications. No
** mutual exclusion is provided. But this
** implementation can be overridden at
** start-time.
**
** SQLITE_MUTEX_PTHREADS For multi-threaded applications on Unix.
**
@@ -48,25 +41,22 @@
**
** SQLITE_MUTEX_OS2 For multi-threaded applications on OS/2.
*/
#define SQLITE_MUTEX_NOOP 1 /* The default */
#if defined(SQLITE_DEBUG) && !SQLITE_THREADSAFE
# undef SQLITE_MUTEX_NOOP
# define SQLITE_MUTEX_NOOP_DEBUG
#if !SQLITE_THREADSAFE
# define SQLITE_MUTEX_OMIT
#endif
#if defined(SQLITE_MUTEX_NOOP) && SQLITE_THREADSAFE && SQLITE_OS_UNIX
# undef SQLITE_MUTEX_NOOP
# define SQLITE_MUTEX_PTHREADS
#endif
#if defined(SQLITE_MUTEX_NOOP) && SQLITE_THREADSAFE && SQLITE_OS_WIN
# undef SQLITE_MUTEX_NOOP
# define SQLITE_MUTEX_W32
#endif
#if defined(SQLITE_MUTEX_NOOP) && SQLITE_THREADSAFE && SQLITE_OS_OS2
# undef SQLITE_MUTEX_NOOP
# define SQLITE_MUTEX_OS2
#if SQLITE_THREADSAFE && !defined(SQLITE_MUTEX_NOOP)
# if SQLITE_OS_UNIX
# define SQLITE_MUTEX_PTHREADS
# elif SQLITE_OS_WIN
# define SQLITE_MUTEX_W32
# elif SQLITE_OS_OS2
# define SQLITE_MUTEX_OS2
# else
# define SQLITE_MUTEX_NOOP
# endif
#endif
#ifdef SQLITE_MUTEX_NOOP
#ifdef SQLITE_MUTEX_OMIT
/*
** If this is a no-op implementation, implement everything as macros.
*/
@@ -80,6 +70,4 @@
#define sqlite3MutexAlloc(X) ((sqlite3_mutex*)8)
#define sqlite3MutexInit() SQLITE_OK
#define sqlite3MutexEnd()
#endif
#endif /* SQLITE_MUTEX_APPDEF */
#endif /* defined(SQLITE_OMIT_MUTEX) */