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Copy pathtest_init.c
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292 lines (267 loc) · 8.32 KB
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/*
** 2009 August 17
**
** 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.
**
*************************************************************************
**
** The code in this file is used for testing SQLite. It is not part of
** the source code used in production systems.
**
** Specifically, this file tests the effect of errors while initializing
** the various pluggable sub-systems from within sqlite3_initialize().
** If an error occurs in sqlite3_initialize() the following should be
** true:
**
** 1) An error code is returned to the user, and
** 2) A subsequent call to sqlite3_shutdown() calls the shutdown method
** of those subsystems that were initialized, and
** 3) A subsequent call to sqlite3_initialize() attempts to initialize
** the remaining, uninitialized, subsystems.
*/
#include "sqliteInt.h"
#include <string.h>
#include <tcl.h>
static struct Wrapped {
sqlite3_pcache_methods2 pcache;
sqlite3_mem_methods mem;
sqlite3_mutex_methods mutex;
int mem_init; /* True if mem subsystem is initalized */
int mem_fail; /* True to fail mem subsystem inialization */
int mutex_init; /* True if mutex subsystem is initalized */
int mutex_fail; /* True to fail mutex subsystem inialization */
int pcache_init; /* True if pcache subsystem is initalized */
int pcache_fail; /* True to fail pcache subsystem inialization */
} wrapped;
static int wrMemInit(void *pAppData){
int rc;
if( wrapped.mem_fail ){
rc = SQLITE_ERROR;
}else{
rc = wrapped.mem.xInit(wrapped.mem.pAppData);
}
if( rc==SQLITE_OK ){
wrapped.mem_init = 1;
}
return rc;
}
static void wrMemShutdown(void *pAppData){
wrapped.mem.xShutdown(wrapped.mem.pAppData);
wrapped.mem_init = 0;
}
static void *wrMemMalloc(int n) {return wrapped.mem.xMalloc(n);}
static void wrMemFree(void *p) {wrapped.mem.xFree(p);}
static void *wrMemRealloc(void *p, int n) {return wrapped.mem.xRealloc(p, n);}
static int wrMemSize(void *p) {return wrapped.mem.xSize(p);}
static int wrMemRoundup(int n) {return wrapped.mem.xRoundup(n);}
static int wrMutexInit(void){
int rc;
if( wrapped.mutex_fail ){
rc = SQLITE_ERROR;
}else{
rc = wrapped.mutex.xMutexInit();
}
if( rc==SQLITE_OK ){
wrapped.mutex_init = 1;
}
return rc;
}
static int wrMutexEnd(void){
wrapped.mutex.xMutexEnd();
wrapped.mutex_init = 0;
return SQLITE_OK;
}
static sqlite3_mutex *wrMutexAlloc(int e){
return wrapped.mutex.xMutexAlloc(e);
}
static void wrMutexFree(sqlite3_mutex *p){
wrapped.mutex.xMutexFree(p);
}
static void wrMutexEnter(sqlite3_mutex *p){
wrapped.mutex.xMutexEnter(p);
}
static int wrMutexTry(sqlite3_mutex *p){
return wrapped.mutex.xMutexTry(p);
}
static void wrMutexLeave(sqlite3_mutex *p){
wrapped.mutex.xMutexLeave(p);
}
static int wrMutexHeld(sqlite3_mutex *p){
return wrapped.mutex.xMutexHeld(p);
}
static int wrMutexNotheld(sqlite3_mutex *p){
return wrapped.mutex.xMutexNotheld(p);
}
static int wrPCacheInit(void *pArg){
int rc;
if( wrapped.pcache_fail ){
rc = SQLITE_ERROR;
}else{
rc = wrapped.pcache.xInit(wrapped.pcache.pArg);
}
if( rc==SQLITE_OK ){
wrapped.pcache_init = 1;
}
return rc;
}
static void wrPCacheShutdown(void *pArg){
wrapped.pcache.xShutdown(wrapped.pcache.pArg);
wrapped.pcache_init = 0;
}
static sqlite3_pcache *wrPCacheCreate(int a, int b, int c){
return wrapped.pcache.xCreate(a, b, c);
}
static void wrPCacheCachesize(sqlite3_pcache *p, int n){
wrapped.pcache.xCachesize(p, n);
}
static int wrPCachePagecount(sqlite3_pcache *p){
return wrapped.pcache.xPagecount(p);
}
static sqlite3_pcache_page *wrPCacheFetch(sqlite3_pcache *p, unsigned a, int b){
return wrapped.pcache.xFetch(p, a, b);
}
static void wrPCacheUnpin(sqlite3_pcache *p, sqlite3_pcache_page *a, int b){
wrapped.pcache.xUnpin(p, a, b);
}
static void wrPCacheRekey(
sqlite3_pcache *p,
sqlite3_pcache_page *a,
unsigned b,
unsigned c
){
wrapped.pcache.xRekey(p, a, b, c);
}
static void wrPCacheTruncate(sqlite3_pcache *p, unsigned a){
wrapped.pcache.xTruncate(p, a);
}
static void wrPCacheDestroy(sqlite3_pcache *p){
wrapped.pcache.xDestroy(p);
}
static void installInitWrappers(void){
sqlite3_mutex_methods mutexmethods = {
wrMutexInit, wrMutexEnd, wrMutexAlloc,
wrMutexFree, wrMutexEnter, wrMutexTry,
wrMutexLeave, wrMutexHeld, wrMutexNotheld
};
sqlite3_pcache_methods2 pcachemethods = {
1, 0,
wrPCacheInit, wrPCacheShutdown, wrPCacheCreate,
wrPCacheCachesize, wrPCachePagecount, wrPCacheFetch,
wrPCacheUnpin, wrPCacheRekey, wrPCacheTruncate,
wrPCacheDestroy
};
sqlite3_mem_methods memmethods = {
wrMemMalloc, wrMemFree, wrMemRealloc,
wrMemSize, wrMemRoundup, wrMemInit,
wrMemShutdown,
0
};
memset(&wrapped, 0, sizeof(wrapped));
sqlite3_shutdown();
sqlite3_config(SQLITE_CONFIG_GETMUTEX, &wrapped.mutex);
sqlite3_config(SQLITE_CONFIG_GETMALLOC, &wrapped.mem);
sqlite3_config(SQLITE_CONFIG_GETPCACHE2, &wrapped.pcache);
sqlite3_config(SQLITE_CONFIG_MUTEX, &mutexmethods);
sqlite3_config(SQLITE_CONFIG_MALLOC, &memmethods);
sqlite3_config(SQLITE_CONFIG_PCACHE2, &pcachemethods);
}
static int init_wrapper_install(
ClientData clientData, /* Unused */
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int objc, /* Number of arguments */
Tcl_Obj *CONST objv[] /* Command arguments */
){
int i;
installInitWrappers();
for(i=1; i<objc; i++){
char *z = Tcl_GetString(objv[i]);
if( strcmp(z, "mem")==0 ){
wrapped.mem_fail = 1;
}else if( strcmp(z, "mutex")==0 ){
wrapped.mutex_fail = 1;
}else if( strcmp(z, "pcache")==0 ){
wrapped.pcache_fail = 1;
}else{
Tcl_AppendResult(interp, "Unknown argument: \"", z, "\"");
return TCL_ERROR;
}
}
return TCL_OK;
}
static int init_wrapper_uninstall(
ClientData clientData, /* Unused */
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int objc, /* Number of arguments */
Tcl_Obj *CONST objv[] /* Command arguments */
){
if( objc!=1 ){
Tcl_WrongNumArgs(interp, 1, objv, "");
return TCL_ERROR;
}
memset(&wrapped, 0, sizeof(&wrapped));
sqlite3_shutdown();
sqlite3_config(SQLITE_CONFIG_MUTEX, &wrapped.mutex);
sqlite3_config(SQLITE_CONFIG_MALLOC, &wrapped.mem);
sqlite3_config(SQLITE_CONFIG_PCACHE2, &wrapped.pcache);
return TCL_OK;
}
static int init_wrapper_clear(
ClientData clientData, /* Unused */
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int objc, /* Number of arguments */
Tcl_Obj *CONST objv[] /* Command arguments */
){
if( objc!=1 ){
Tcl_WrongNumArgs(interp, 1, objv, "");
return TCL_ERROR;
}
wrapped.mem_fail = 0;
wrapped.mutex_fail = 0;
wrapped.pcache_fail = 0;
return TCL_OK;
}
static int init_wrapper_query(
ClientData clientData, /* Unused */
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int objc, /* Number of arguments */
Tcl_Obj *CONST objv[] /* Command arguments */
){
Tcl_Obj *pRet;
if( objc!=1 ){
Tcl_WrongNumArgs(interp, 1, objv, "");
return TCL_ERROR;
}
pRet = Tcl_NewObj();
if( wrapped.mutex_init ){
Tcl_ListObjAppendElement(interp, pRet, Tcl_NewStringObj("mutex", -1));
}
if( wrapped.mem_init ){
Tcl_ListObjAppendElement(interp, pRet, Tcl_NewStringObj("mem", -1));
}
if( wrapped.pcache_init ){
Tcl_ListObjAppendElement(interp, pRet, Tcl_NewStringObj("pcache", -1));
}
Tcl_SetObjResult(interp, pRet);
return TCL_OK;
}
int Sqlitetest_init_Init(Tcl_Interp *interp){
static struct {
char *zName;
Tcl_ObjCmdProc *xProc;
} aObjCmd[] = {
{"init_wrapper_install", init_wrapper_install},
{"init_wrapper_query", init_wrapper_query },
{"init_wrapper_uninstall", init_wrapper_uninstall},
{"init_wrapper_clear", init_wrapper_clear}
};
int i;
for(i=0; i<sizeof(aObjCmd)/sizeof(aObjCmd[0]); i++){
Tcl_CreateObjCommand(interp, aObjCmd[i].zName, aObjCmd[i].xProc, 0, 0);
}
return TCL_OK;
}