[sqlite] Remove obsolete reference version 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/src/test_async.c

-/*
-** 2005 December 14
-**
-** The author disclaims copyright to this source code.  In place of
-** a legal notice, here is a blessing:
-**
-**    May you do good and not evil.
-**    May you find forgiveness for yourself and forgive others.
-**    May you share freely, never taking more than you give.
-**
-*************************************************************************
-**
-** This file contains a binding of the asynchronous IO extension interface
-** (defined in ext/async/sqlite3async.h) to Tcl.
-*/
-
-#define TCL_THREADS 
-#include <tcl.h>
-
-#ifdef SQLITE_ENABLE_ASYNCIO
-
-#include "sqlite3async.h"
-#include "sqlite3.h"
-#include <assert.h>
-
-/* From main.c */
-extern const char *sqlite3ErrName(int);
-
-
-struct TestAsyncGlobal {
-  int isInstalled;                     /* True when async VFS is installed */
-} testasync_g = { 0 };
-
-TCL_DECLARE_MUTEX(testasync_g_writerMutex);
-
-/*
-** sqlite3async_initialize PARENT-VFS ISDEFAULT
-*/
-static int testAsyncInit(
-  void * clientData,
-  Tcl_Interp *interp,
-  int objc,
-  Tcl_Obj *CONST objv[]
-){
-  const char *zParent;
-  int isDefault;
-  int rc;
-
-  if( objc!=3 ){
-    Tcl_WrongNumArgs(interp, 1, objv, "PARENT-VFS ISDEFAULT");
-    return TCL_ERROR;
-  }
-  zParent = Tcl_GetString(objv[1]);
-  if( !*zParent ) {
-    zParent = 0;
-  }
-  if( Tcl_GetBooleanFromObj(interp, objv[2], &isDefault) ){
-    return TCL_ERROR;
-  }
-
-  rc = sqlite3async_initialize(zParent, isDefault);
-  if( rc!=SQLITE_OK ){
-    Tcl_SetObjResult(interp, Tcl_NewStringObj(sqlite3ErrName(rc), -1));
-    return TCL_ERROR;
-  }
-  return TCL_OK;
-}
-
-/*
-** sqlite3async_shutdown
-*/
-static int testAsyncShutdown(
-  void * clientData,
-  Tcl_Interp *interp,
-  int objc,
-  Tcl_Obj *CONST objv[]
-){
-  sqlite3async_shutdown();
-  return TCL_OK;
-}
-
-static Tcl_ThreadCreateType tclWriterThread(ClientData pIsStarted){
-  Tcl_MutexLock(&testasync_g_writerMutex);
-  *((int *)pIsStarted) = 1;
-  sqlite3async_run();
-  Tcl_MutexUnlock(&testasync_g_writerMutex);
-  Tcl_ExitThread(0);
-  TCL_THREAD_CREATE_RETURN;
-}
-
-/*
-** sqlite3async_start
-**
-** Start a new writer thread.
-*/
-static int testAsyncStart(
-  void * clientData,
-  Tcl_Interp *interp,
-  int objc,
-  Tcl_Obj *CONST objv[]
-){
-  volatile int isStarted = 0;
-  ClientData threadData = (ClientData)&isStarted;
-
-  Tcl_ThreadId x;
-  const int nStack = TCL_THREAD_STACK_DEFAULT;
-  const int flags = TCL_THREAD_NOFLAGS;
-  int rc;
-
-  rc = Tcl_CreateThread(&x, tclWriterThread, threadData, nStack, flags);
-  if( rc!=TCL_OK ){
-    Tcl_AppendResult(interp, "Tcl_CreateThread() failed", 0);
-    return TCL_ERROR;
-  }
-
-  while( isStarted==0 ) { /* Busy loop */ }
-  return TCL_OK;
-}
-
-/*
-** sqlite3async_wait
-**
-** Wait for the current writer thread to terminate.
-**
-** If the current writer thread is set to run forever then this
-** command would block forever.  To prevent that, an error is returned. 
-*/
-static int testAsyncWait(
-  void * clientData,
-  Tcl_Interp *interp,
-  int objc,
-  Tcl_Obj *CONST objv[]
-){
-  int eCond;
-  if( objc!=1 ){
-    Tcl_WrongNumArgs(interp, 1, objv, "");
-    return TCL_ERROR;
-  }
-
-  sqlite3async_control(SQLITEASYNC_GET_HALT, &eCond);
-  if( eCond==SQLITEASYNC_HALT_NEVER ){
-    Tcl_AppendResult(interp, "would block forever", (char*)0);
-    return TCL_ERROR;
-  }
-
-  Tcl_MutexLock(&testasync_g_writerMutex);
-  Tcl_MutexUnlock(&testasync_g_writerMutex);
-  return TCL_OK;
-}
-
-/*
-** sqlite3async_control OPTION ?VALUE?
-*/
-static int testAsyncControl(
-  void * clientData,
-  Tcl_Interp *interp,
-  int objc,
-  Tcl_Obj *CONST objv[]
-){
-  int rc = SQLITE_OK;
-  int aeOpt[] = { SQLITEASYNC_HALT, SQLITEASYNC_DELAY, SQLITEASYNC_LOCKFILES };
-  const char *azOpt[] = { "halt", "delay", "lockfiles", 0 };
-  const char *az[] = { "never", "now", "idle", 0 };
-  int iVal;
-  int eOpt;
-
-  if( objc!=2 && objc!=3 ){
-    Tcl_WrongNumArgs(interp, 1, objv, "OPTION ?VALUE?");
-    return TCL_ERROR;
-  }
-  if( Tcl_GetIndexFromObj(interp, objv[1], azOpt, "option", 0, &eOpt) ){
-    return TCL_ERROR;
-  }
-  eOpt = aeOpt[eOpt];
-
-  if( objc==3 ){
-    switch( eOpt ){
-      case SQLITEASYNC_HALT: {
-        assert( SQLITEASYNC_HALT_NEVER==0 );
-        assert( SQLITEASYNC_HALT_NOW==1 );
-        assert( SQLITEASYNC_HALT_IDLE==2 );
-        if( Tcl_GetIndexFromObj(interp, objv[2], az, "value", 0, &iVal) ){
-          return TCL_ERROR;
-        }
-        break;
-      }
-      case SQLITEASYNC_DELAY:
-        if( Tcl_GetIntFromObj(interp, objv[2], &iVal) ){
-          return TCL_ERROR;
-        }
-        break;
-
-      case SQLITEASYNC_LOCKFILES:
-        if( Tcl_GetBooleanFromObj(interp, objv[2], &iVal) ){
-          return TCL_ERROR;
-        }
-        break;
-    }
-
-    rc = sqlite3async_control(eOpt, iVal);
-  }
-
-  if( rc==SQLITE_OK ){
-    rc = sqlite3async_control(
-        eOpt==SQLITEASYNC_HALT ? SQLITEASYNC_GET_HALT :
-        eOpt==SQLITEASYNC_DELAY ? SQLITEASYNC_GET_DELAY :
-        SQLITEASYNC_GET_LOCKFILES, &iVal);
-  }
-
-  if( rc!=SQLITE_OK ){
-    Tcl_SetObjResult(interp, Tcl_NewStringObj(sqlite3ErrName(rc), -1));
-    return TCL_ERROR;
-  }
-
-  if( eOpt==SQLITEASYNC_HALT ){
-    Tcl_SetObjResult(interp, Tcl_NewStringObj(az[iVal], -1));
-  }else{
-    Tcl_SetObjResult(interp, Tcl_NewIntObj(iVal));
-  }
-
-  return TCL_OK;
-}
-
-#endif  /* SQLITE_ENABLE_ASYNCIO */
-
-/*
-** This routine registers the custom TCL commands defined in this
-** module.  This should be the only procedure visible from outside
-** of this module.
-*/
-int Sqlitetestasync_Init(Tcl_Interp *interp){
-#ifdef SQLITE_ENABLE_ASYNCIO
-  Tcl_CreateObjCommand(interp,"sqlite3async_start",testAsyncStart,0,0);
-  Tcl_CreateObjCommand(interp,"sqlite3async_wait",testAsyncWait,0,0);
-
-  Tcl_CreateObjCommand(interp,"sqlite3async_control",testAsyncControl,0,0);
-  Tcl_CreateObjCommand(interp,"sqlite3async_initialize",testAsyncInit,0,0);
-  Tcl_CreateObjCommand(interp,"sqlite3async_shutdown",testAsyncShutdown,0,0);
-#endif  /* SQLITE_ENABLE_ASYNCIO */
-  return TCL_OK;
-}