wasCSharpSQLite – Rev 1
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using System;
using System.Diagnostics;
namespace Community.CsharpSqlite
{
public partial class Sqlite3
{
/*
** 2008 Jan 22
**
** 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 code to support the concept of "benign"
** malloc failures (when the xMalloc() or xRealloc() method of the
** sqlite3_mem_methods structure fails to allocate a block of memory
** and returns 0).
**
** Most malloc failures are non-benign. After they occur, SQLite
** abandons the current operation and returns an error code (usually
** SQLITE_NOMEM) to the user. However, sometimes a fault is not necessarily
** fatal. For example, if a malloc fails while resizing a hash table, this
** is completely recoverable simply by not carrying out the resize. The
** hash table will continue to function normally. So a malloc failure
** during a hash table resize is a benign fault.
*************************************************************************
** Included in SQLite3 port to C#-SQLite; 2008 Noah B Hart
** C#-SQLite is an independent reimplementation of the SQLite software library
**
** SQLITE_SOURCE_ID: 2010-08-23 18:52:01 42537b60566f288167f1b5864a5435986838e3a3
**
*************************************************************************
*/
//#include "sqliteInt.h"
#if !SQLITE_OMIT_BUILTIN_TEST
/*
** Global variables.
*/
//typedef struct BenignMallocHooks BenignMallocHooks;
public struct BenignMallocHooks//
{
public void_function xBenignBegin;//void (*xBenignBegin)(void);
public void_function xBenignEnd; //void (*xBenignEnd)(void);
public BenignMallocHooks( void_function xBenignBegin, void_function xBenignEnd )
{
this.xBenignBegin = xBenignBegin;
this.xBenignEnd = xBenignEnd;
}
}
static BenignMallocHooks sqlite3Hooks = new BenignMallocHooks( null, null );
/* The "wsdHooks" macro will resolve to the appropriate BenignMallocHooks
** structure. If writable static data is unsupported on the target,
** we have to locate the state vector at run-time. In the more common
** case where writable static data is supported, wsdHooks can refer directly
** to the "sqlite3Hooks" state vector declared above.
*/
#if SQLITE_OMIT_WSD
//# define wsdHooksInit \
BenignMallocHooks *x = &GLOBAL(BenignMallocHooks,sqlite3Hooks)
//# define wsdHooks x[0]
#else
//# define wsdHooksInit
static void wsdHooksInit()
{
}
//# define wsdHooks sqlite3Hooks
static BenignMallocHooks wsdHooks = sqlite3Hooks;
#endif
/*
** Register hooks to call when sqlite3BeginBenignMalloc() and
** sqlite3EndBenignMalloc() are called, respectively.
*/
static void sqlite3BenignMallocHooks(
void_function xBenignBegin, //void (*xBenignBegin)(void),
void_function xBenignEnd //void (*xBenignEnd)(void)
)
{
wsdHooksInit();
wsdHooks.xBenignBegin = xBenignBegin;
wsdHooks.xBenignEnd = xBenignEnd;
}
/*
** This (sqlite3EndBenignMalloc()) is called by SQLite code to indicate that
** subsequent malloc failures are benign. A call to sqlite3EndBenignMalloc()
** indicates that subsequent malloc failures are non-benign.
*/
static void sqlite3BeginBenignMalloc()
{
wsdHooksInit();
if ( wsdHooks.xBenignBegin != null )
{
wsdHooks.xBenignBegin();
}
}
static void sqlite3EndBenignMalloc()
{
wsdHooksInit();
if ( wsdHooks.xBenignEnd != null )
{
wsdHooks.xBenignEnd();
}
}
#endif //* SQLITE_OMIT_BUILTIN_TEST */
}
}