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Overview
Comment:Revise the implementation of sqlite3_initialize() slightly in order to make it more easily testable. The functionality should be unchanged. (CVS 6519)
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SHA1:bb1a390a3d2f79b27e3ec2514ae00f5b22dbfb06
User & Date: drh 2009-04-17 16:54:23
Context
2009-04-19
12:23
Make extra calls to sqlite3_shutdown() be harmless no-ops. (CVS 6520) check-in: d8082295 user: drh tags: trunk
2009-04-17
16:54
Revise the implementation of sqlite3_initialize() slightly in order to make it more easily testable. The functionality should be unchanged. (CVS 6519) check-in: bb1a390a user: drh tags: trunk
15:18
Get the behavior of SQLITE_HAVE_ISNAN right. It was reversed in check-in (6517). Ticket #3809. (CVS 6518) check-in: 97c6ea23 user: drh tags: trunk
Changes
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Changes to src/main.c.

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**
*************************************************************************
** Main file for the SQLite library.  The routines in this file
** implement the programmer interface to the library.  Routines in
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.536 2009/04/09 01:23:49 drh Exp $
*/
#include "sqliteInt.h"

#ifdef SQLITE_ENABLE_FTS3
# include "fts3.h"
#endif
#ifdef SQLITE_ENABLE_RTREE
................................................................................
  */
  sqlite3_mutex_enter(sqlite3GlobalConfig.pInitMutex);
  if( sqlite3GlobalConfig.isInit==0 && sqlite3GlobalConfig.inProgress==0 ){
    FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions);
    sqlite3GlobalConfig.inProgress = 1;
    memset(pHash, 0, sizeof(sqlite3GlobalFunctions));
    sqlite3RegisterGlobalFunctions();


    rc = sqlite3_os_init();

    if( rc==SQLITE_OK ){
      rc = sqlite3PcacheInitialize();
      sqlite3PCacheBufferSetup( sqlite3GlobalConfig.pPage, 
          sqlite3GlobalConfig.szPage, sqlite3GlobalConfig.nPage);

    }
    sqlite3GlobalConfig.inProgress = 0;
    sqlite3GlobalConfig.isInit = (rc==SQLITE_OK ? 1 : 0);
  }
  sqlite3_mutex_leave(sqlite3GlobalConfig.pInitMutex);

  /* Go back under the static mutex and clean up the recursive
  ** mutex to prevent a resource leak.
  */
  sqlite3_mutex_enter(pMaster);







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**
*************************************************************************
** Main file for the SQLite library.  The routines in this file
** implement the programmer interface to the library.  Routines in
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.537 2009/04/17 16:54:23 drh Exp $
*/
#include "sqliteInt.h"

#ifdef SQLITE_ENABLE_FTS3
# include "fts3.h"
#endif
#ifdef SQLITE_ENABLE_RTREE
................................................................................
  */
  sqlite3_mutex_enter(sqlite3GlobalConfig.pInitMutex);
  if( sqlite3GlobalConfig.isInit==0 && sqlite3GlobalConfig.inProgress==0 ){
    FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions);
    sqlite3GlobalConfig.inProgress = 1;
    memset(pHash, 0, sizeof(sqlite3GlobalFunctions));
    sqlite3RegisterGlobalFunctions();
    rc = sqlite3PcacheInitialize();
    if( rc==SQLITE_OK ){
      rc = sqlite3_os_init();
    }
    if( rc==SQLITE_OK ){

      sqlite3PCacheBufferSetup( sqlite3GlobalConfig.pPage, 
          sqlite3GlobalConfig.szPage, sqlite3GlobalConfig.nPage);
      sqlite3GlobalConfig.isInit = 1;
    }
    sqlite3GlobalConfig.inProgress = 0;

  }
  sqlite3_mutex_leave(sqlite3GlobalConfig.pInitMutex);

  /* Go back under the static mutex and clean up the recursive
  ** mutex to prevent a resource leak.
  */
  sqlite3_mutex_enter(pMaster);