From: danielk1977 <danielk1977@noemail.net>
Date: Wed, 18 Jan 2006 18:22:43 +0000 (+0000)
Subject: Include the ThreadData structure in internal malloc() testing. Also fixes for reveale... 
X-Git-Tag: version-3.6.10~3193
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=76e8d1a29270e5edbfc14c7dfd36bdc0376cd41b;p=thirdparty%2Fsqlite.git

Include the ThreadData structure in internal malloc() testing. Also fixes for revealed bugs. (CVS 2974)

FossilOrigin-Name: c7b9d50d0a975912776aaa2b870308652f77e1e6
---

diff --git a/manifest b/manifest
index 875eede5a4..c62c14ca82 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Modify\sthe\ssqlite3OsInMutex\sos-layer\sinterface\sto\stake\sa\ssingle\sparameter\nto\sdistinguish\sbetween\smutexes\sheld\sby\sthe\scurrent\sthread\sand\smutexes\sheld\nby\sany\sthread.\s\sPart\sof\sthe\sfix\sfor\sticket\s#1630.\s(CVS\s2973)
-D 2006-01-18T17:25:46
+C Include\sthe\sThreadData\sstructure\sin\sinternal\smalloc()\stesting.\sAlso\sfixes\sfor\srevealed\sbugs.\s(CVS\s2974)
+D 2006-01-18T18:22:43
 F Makefile.in ab3ffd8d469cef4477257169b82810030a6bb967
 F Makefile.linux-gcc aee18d8a05546dcf1888bd4547e442008a49a092
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -55,25 +55,25 @@ F src/os.h e4637eadcd5a9ca079029078d31751ae295fb05e
 F src/os_common.h 95b29ca6f3e6636cb33c9219b3f91a96fa7224b1
 F src/os_test.c 49833426101f99aee4bb5f6a44b7c4b2029fda1c
 F src/os_test.h 903c93554c23d88f34f667f1979e4a1cee792af3
-F src/os_unix.c 9d44bcfbc1e0997331acec827027637dbe9d7131
+F src/os_unix.c a242a9458b08f01fa11d42b23bcdb89a3fbf2a68
 F src/os_unix.h 5768d56d28240d3fe4537fac08cc85e4fb52279e
 F src/os_win.c 98e4e38db7d4a00647b2bb1c60d28b7ca5034c03
 F src/os_win.h 41a946bea10f61c158ce8645e7646b29d44f122b
-F src/pager.c 651fda1756c2334009e14bfdc652aadbdbed4e8c
+F src/pager.c ccdd092702decc02fd3a54380c6d46c546eea5a6
 F src/pager.h e0acb095b3ad0bca48f2ab00c87346665643f64f
 F src/parse.y 83df51fea35f68f7e07384d75dce83d1ed30434c
 F src/pragma.c 4496cc77dc35824e1c978c3d1413b8a5a4c777d3
-F src/prepare.c 5aa661a35a18edd2e13f5c87263080781cf0fcf3
+F src/prepare.c 5d6f5b7194ee72cecd66cab49d15159e55d63f28
 F src/printf.c f47a2f4b5387cd2ebb12e9117a1a5d6bd9a2b812
 F src/random.c d40f8d356cecbd351ccfab6eaedd7ec1b54f5261
 F src/select.c e80ac3438d64bfdb1116660309f578eb1efed6e1
 F src/server.c 087b92a39d883e3fa113cae259d64e4c7438bc96
 F src/shell.c 66b073375efbdee19045e7e0cd38b85f9aff71da
 F src/sqlite.h.in 492580f7e3ff71eb43193eb7bb98e2d549889ce3
-F src/sqliteInt.h ecb38c65affb3411fbd375fb14707000aab15aed
+F src/sqliteInt.h 7ddd6141a57748363fe42119f165d06260996aa3
 F src/table.c 486dcfce532685b53b5a2b5da8bba0ded6fb2316
 F src/tclsqlite.c d650bea0248fc0a310ddc2cb94273a3a5021fddf
-F src/test1.c 2ddf346a75069254ce24853fe970f8ee2812a371
+F src/test1.c 1c08d6533843687266d0d090d2c19bb0c9a9a907
 F src/test2.c ca74a1d8aeb7d9606e8f6b762c5daf85c1a3f92b
 F src/test3.c 9742aa146eb750cab81c1d5605286c3a0eb88054
 F src/test4.c 6633cb7b4a7429e938804a34f688d118c8b7f8e1
@@ -85,12 +85,12 @@ F src/tokenize.c 1ac078540c2074568e16c0e9beea836fb16b1adc
 F src/trigger.c 4d3644cbd16959b568c95ae73493402be8021b08
 F src/update.c 14be4ba2f438919b4217085c02feff569e6cf1f2
 F src/utf.c 5ab8ca05d4e9ec81174b010f01ab12a232f0087d
-F src/util.c b916d21774e6259d86e875df399dbe1a28e69b8e
+F src/util.c 3f09c6ffb1d0ea4efe17304c8c5c3612c5cd53fc
 F src/vacuum.c 3865673cc66acd0717ecd517f6b8fdb2a5e7924b
-F src/vdbe.c 5af32281e96b2c3e29f50975a86b9f5eef044057
+F src/vdbe.c 2a3d5ea76ab166bd77de9e3a7dbeb4a9354a1603
 F src/vdbe.h 8729a4ee16ff9aeab2af9667df3cf300ff978e13
 F src/vdbeInt.h 5451cf71f229e366ac543607c0a17f36e5737ea9
-F src/vdbeapi.c 08578a1d601bded62e829bc2f85281556f787333
+F src/vdbeapi.c b5a3eacce266a657cdc0fc740b60ba480fb88649
 F src/vdbeaux.c 1b3fe25f69ec9a3616f8cd747f3b8b87a0a40f04
 F src/vdbefifo.c 9efb94c8c3f4c979ebd0028219483f88e57584f5
 F src/vdbemem.c 53f25c5c537e4ded24549d6c8537e65d4efc42d1
@@ -341,7 +341,7 @@ F www/tclsqlite.tcl bb0d1357328a42b1993d78573e587c6dcbc964b9
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl a99cf5f6d8bd4d5537584a2b342f0fb9fa601d8b
 F www/whentouse.tcl 97e2b5cd296f7d8057e11f44427dea8a4c2db513
-P ac090f2ab3b5a792c2fdf897e10060f263e0d408
-R 789c880886342b50e95c468de56aedb9
-U drh
-Z cf39b9ccff84563836ed01af4518e925
+P e1ad9df1cf46287f2a7789275e98d28e05880e17
+R d16f70b255799a1d6293d5f839dfd544
+U danielk1977
+Z d52ffd289093139bee40bd2d96a45c60
diff --git a/manifest.uuid b/manifest.uuid
index f0fccb15ac..27c53c3816 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-e1ad9df1cf46287f2a7789275e98d28e05880e17
\ No newline at end of file
+c7b9d50d0a975912776aaa2b870308652f77e1e6
\ No newline at end of file
diff --git a/src/os_unix.c b/src/os_unix.c
index 0cee34299a..dfa33f2e2d 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -1782,7 +1782,12 @@ ThreadData *sqlite3UnixThreadSpecificData(int allocateFlag){
   pTsd = pthread_getspecific(key);
   if( allocateFlag>0 ){
     if( pTsd==0 ){
-      pTsd = sqlite3OsMalloc(sizeof(zeroData));
+      if( !sqlite3TestMallocFail() ){
+        pTsd = sqlite3OsMalloc(sizeof(zeroData));
+      }
+#ifdef SQLITE_MEMDEBUG
+      sqlite3_isFail = 0;
+#endif
       if( pTsd ){
         *pTsd = zeroData;
         pthread_setspecific(key, pTsd);
@@ -1801,7 +1806,12 @@ ThreadData *sqlite3UnixThreadSpecificData(int allocateFlag){
   static ThreadData *pTsd = 0;
   if( allocateFlag>0 ){
     if( pTsd==0 ){
-      pTsd = sqlite3OsMalloc( sizeof(zeroData) );
+      if( !sqlite3TestMallocFail() ){
+        pTsd = sqlite3OsMalloc( sizeof(zeroData) );
+      }
+#ifdef SQLITE_MEMDEBUG
+      sqlite3_isFail = 0;
+#endif
       if( pTsd ){
         *pTsd = zeroData;
         TSD_COUNTER(+1);
diff --git a/src/pager.c b/src/pager.c
index 51a11064cf..27c7078b75 100644
--- a/src/pager.c
+++ b/src/pager.c
@@ -18,7 +18,7 @@
 ** file simultaneously, or one process from reading the database while
 ** another is writing.
 **
-** @(#) $Id: pager.c,v 1.244 2006/01/18 17:25:46 drh Exp $
+** @(#) $Id: pager.c,v 1.245 2006/01/18 18:22:43 danielk1977 Exp $
 */
 #ifndef SQLITE_OMIT_DISKIO
 #include "sqliteInt.h"
@@ -1999,6 +1999,7 @@ int sqlite3pager_close(Pager *pPager){
   ** so that ThreadData.nAlloc can be set.
   */
   ThreadData *pTsd = sqlite3ThreadData();
+  assert( pPager );
   assert( pTsd && pTsd->nAlloc );
 #endif
 
diff --git a/src/prepare.c b/src/prepare.c
index b60778365a..778169d240 100644
--- a/src/prepare.c
+++ b/src/prepare.c
@@ -13,7 +13,7 @@
 ** interface, and routines that contribute to loading the database schema
 ** from disk.
 **
-** $Id: prepare.c,v 1.26 2006/01/18 16:51:35 danielk1977 Exp $
+** $Id: prepare.c,v 1.27 2006/01/18 18:22:43 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
@@ -520,6 +520,9 @@ int sqlite3_prepare(
   memset(&sParse, 0, sizeof(sParse));
   sParse.db = db;
   sParse.pTsd = sqlite3ThreadData();
+  if( !sParse.pTsd ){
+    goto prepare_out;
+  }
   sParse.pTsd->nRef++;
   sqlite3RunParser(&sParse, zSql, &zErrMsg);
 
@@ -554,6 +557,7 @@ int sqlite3_prepare(
   } 
 #endif
 
+prepare_out:
   if( sqlite3SafetyOff(db) ){
     rc = SQLITE_MISUSE;
   }
@@ -570,7 +574,9 @@ int sqlite3_prepare(
     sqlite3Error(db, rc, 0);
   }
 
-  sParse.pTsd->nRef--;
+  if( sParse.pTsd ){
+    sParse.pTsd->nRef--;
+  }
   rc = sqlite3ApiExit(db, rc);
   sqlite3ReleaseThreadData();
   return rc;
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 45854dc54f..f62fd37098 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -11,7 +11,7 @@
 *************************************************************************
 ** Internal interface definitions for SQLite.
 **
-** @(#) $Id: sqliteInt.h,v 1.474 2006/01/18 16:51:35 danielk1977 Exp $
+** @(#) $Id: sqliteInt.h,v 1.475 2006/01/18 18:22:43 danielk1977 Exp $
 */
 #ifndef _SQLITEINT_H_
 #define _SQLITEINT_H_
@@ -1759,7 +1759,9 @@ void sqlite3FailedMalloc();
 #ifdef SQLITE_MEMDEBUG
   void sqlite3MallocDisallow();
   void sqlite3MallocAllow();
+  int sqlite3TestMallocFail();
 #else
+  #define sqlite3TestMallocFail() 0
   #define sqlite3MallocDisallow()
   #define sqlite3MallocAllow()
 #endif
diff --git a/src/test1.c b/src/test1.c
index 018b173913..06699009ba 100644
--- a/src/test1.c
+++ b/src/test1.c
@@ -13,7 +13,7 @@
 ** is not included in the SQLite library.  It is used for automated
 ** testing of the SQLite library.
 **
-** $Id: test1.c,v 1.196 2006/01/18 16:51:35 danielk1977 Exp $
+** $Id: test1.c,v 1.197 2006/01/18 18:22:43 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #include "tcl.h"
@@ -911,7 +911,7 @@ static int sqlite_malloc_outstanding(
 
 #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
   if( objc==2 ){
-    ThreadData *pTd = sqlite3ThreadData();
+    ThreadData const *pTd = sqlite3ThreadDataReadOnly();
     const char *zArg = Tcl_GetString(objv[1]);
     if( 0==strcmp(zArg, "-bytes") ){
       Tcl_SetObjResult(interp, Tcl_NewIntObj(pTd->nAlloc));
diff --git a/src/util.c b/src/util.c
index 53bd6001bd..3ba13913bf 100644
--- a/src/util.c
+++ b/src/util.c
@@ -14,7 +14,7 @@
 ** This file contains functions for allocating memory, comparing
 ** strings, and stuff like that.
 **
-** $Id: util.c,v 1.177 2006/01/18 17:25:46 drh Exp $
+** $Id: util.c,v 1.178 2006/01/18 18:22:43 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
@@ -72,7 +72,10 @@
 ** value indicates no limit.
 */
 void sqlite3_soft_heap_limit(int n){
-  sqlite3ThreadData()->nSoftHeapLimit = n;
+  ThreadData *pTd = sqlite3ThreadData();
+  if( pTd ){
+    pTd->nSoftHeapLimit = n;
+  }
   sqlite3ReleaseThreadData();
 }
 
@@ -207,8 +210,7 @@ int sqlite3_iLine = 0;            /* Line number for debug info */
 ** Check for a simulated memory allocation failure.  Return true if
 ** the failure should be simulated.  Return false to proceed as normal.
 */
-static int failMalloc(){
-  ThreadData *pTsd = sqlite3ThreadData();
+int sqlite3TestMallocFail(){
   if( sqlite3_isFail ){
     return 1;
   }
@@ -316,7 +318,6 @@ static void *getOsPointer(void *p)
 ** of allocations.
 */
 static void linkAlloc(void *p){
-  ThreadData *pTsd = sqlite3ThreadData();
   void **pp = (void **)p;
   pp[0] = 0;
   pp[1] = sqlite3_pFirst;
@@ -332,7 +333,6 @@ static void linkAlloc(void *p){
 */
 static void unlinkAlloc(void *p)
 {
-  ThreadData *pTsd = sqlite3ThreadData();
   void **pp = (void **)p;
   if( p==sqlite3_pFirst ){
     assert(!pp[0]);
@@ -365,7 +365,6 @@ static void relinkAlloc(void *p)
   if( pp[0] ){
     ((void **)(pp[0]))[1] = p;
   }else{
-    ThreadData *pTsd = sqlite3ThreadData();
     sqlite3_pFirst = p;
   }
   if( pp[1] ){
@@ -397,7 +396,6 @@ static void relinkAlloc(void *p)
 #include <tcl.h>
 int sqlite3OutstandingMallocs(Tcl_Interp *interp){
   void *p;
-  ThreadData *pTsd = sqlite3ThreadData();
   Tcl_Obj *pRes = Tcl_NewObj();
   Tcl_IncrRefCount(pRes);
 
@@ -445,11 +443,11 @@ int sqlite3OutstandingMallocs(Tcl_Interp *interp){
 */
 static void * OSMALLOC(int n){
 #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
-  ThreadData *pTsd = sqlite3ThreadData();
+  ThreadData const *pTsd = sqlite3ThreadDataReadOnly();
   sqlite3_nMaxAlloc = MAX(sqlite3_nMaxAlloc, pTsd->nAlloc);
 #endif
   assert( !sqlite3_mallocDisallowed );
-  if( !failMalloc() ){
+  if( !sqlite3TestMallocFail() ){
     u32 *p;
     p = (u32 *)sqlite3OsMalloc(n + TESTALLOC_OVERHEAD);
     assert(p);
@@ -488,10 +486,13 @@ static void OSFREE(void *pFree){
 static void * OSREALLOC(void *pRealloc, int n){
 #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
   ThreadData *pTsd = sqlite3ThreadData();
+  if( !pTsd ){
+    return 0;
+  }
   sqlite3_nMaxAlloc = MAX(sqlite3_nMaxAlloc, pTsd->nAlloc);
 #endif
   assert( !sqlite3_mallocDisallowed );
-  if( !failMalloc() ){
+  if( !sqlite3TestMallocFail() ){
     u32 *p = (u32 *)getOsPointer(pRealloc);
     checkGuards(p);
     p = sqlite3OsRealloc(p, n + TESTALLOC_OVERHEAD);
@@ -535,18 +536,21 @@ static void OSMALLOC_FAILED(){
 ** a no-op
 */
 #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
-static void handleSoftLimit(int n){
+static int handleSoftLimit(int n){
   ThreadData *pTsd = sqlite3ThreadData();
-  pTsd->nAlloc += n;
-  assert( pTsd->nAlloc>=0 );
-  if( n>0 && pTsd->nSoftHeapLimit>0 ){
-    while( pTsd->nAlloc>pTsd->nSoftHeapLimit && sqlite3_release_memory(n) );
-  }else if( pTsd->nAlloc==0 && pTsd->nSoftHeapLimit==0 ){
-    sqlite3ReleaseThreadData();
+  if( pTsd ){
+    pTsd->nAlloc += n;
+    assert( pTsd->nAlloc>=0 );
+    if( n>0 && pTsd->nSoftHeapLimit>0 ){
+      while( pTsd->nAlloc>pTsd->nSoftHeapLimit && sqlite3_release_memory(n) );
+    }else if( pTsd->nAlloc==0 && pTsd->nSoftHeapLimit==0 ){
+      sqlite3ReleaseThreadData();
+    }
   }
+  return (pTsd ? 0 : 1);
 }
 #else
-#define handleSoftLimit(x)
+#define handleSoftLimit(x) 0
 #endif
 
 /*
@@ -556,8 +560,7 @@ static void handleSoftLimit(int n){
 */
 void *sqlite3MallocRaw(int n){
   void *p = 0;
-  if( n>0 && !sqlite3MallocFailed() ){
-    handleSoftLimit(n);
+  if( n>0 && !sqlite3MallocFailed() && !handleSoftLimit(n) ){
     while( !(p = OSMALLOC(n)) && sqlite3_release_memory(n) );
     if( !p ){
       /* If the allocation failed, call handleSoftLimit() again, this time
@@ -587,17 +590,18 @@ void *sqlite3Realloc(void *p, int n){
     return sqlite3Malloc(n);
   }else{
     void *np = 0;
-    handleSoftLimit(n - OSSIZEOF(p));
-    while( !(np = OSREALLOC(p, n)) && sqlite3_release_memory(n) );
-    if( !np ){
-      /* If the allocation failed, call handleSoftLimit() again, this time
-      ** with the additive inverse of the argument passed to 
-      ** handleSoftLimit() above. This is so the ThreadData.nAlloc variable is
-      ** still correct after a malloc() failure. 
-      */
-      handleSoftLimit(OSSIZEOF(p) - n);
-      sqlite3FailedMalloc();
-      OSMALLOC_FAILED();
+    if( !handleSoftLimit(n - OSSIZEOF(p)) ){
+      while( !(np = OSREALLOC(p, n)) && sqlite3_release_memory(n) );
+      if( !np ){
+        /* If the allocation failed, call handleSoftLimit() again, this time
+        ** with the additive inverse of the argument passed to 
+        ** handleSoftLimit() above. This is so the ThreadData.nAlloc variable is
+        ** still correct after a malloc() failure. 
+        */
+        handleSoftLimit(OSSIZEOF(p) - n);
+        sqlite3FailedMalloc();
+        OSMALLOC_FAILED();
+      }
     }
     return np;
   }
@@ -1322,7 +1326,11 @@ void *sqlite3TextToPtr(const char *z){
 ** Return a pointer to the ThreadData associated with the calling thread.
 */
 ThreadData *sqlite3ThreadData(){
-  return (ThreadData*)sqlite3OsThreadSpecificData(1);
+  ThreadData *p = (ThreadData*)sqlite3OsThreadSpecificData(1);
+  if( !p ){
+    sqlite3FailedMalloc();
+  }
+  return p;
 }
 
 /*
diff --git a/src/vdbe.c b/src/vdbe.c
index a99f3354d6..ccc2ea1d70 100644
--- a/src/vdbe.c
+++ b/src/vdbe.c
@@ -43,7 +43,7 @@
 ** in this file for details.  If in doubt, do not deviate from existing
 ** commenting and indentation practices when changing or adding code.
 **
-** $Id: vdbe.c,v 1.532 2006/01/18 16:51:36 danielk1977 Exp $
+** $Id: vdbe.c,v 1.533 2006/01/18 18:22:43 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
@@ -408,6 +408,9 @@ int sqlite3VdbeExec(
   Mem *pStackLimit;
 #endif
   ThreadData *pTsd = sqlite3ThreadData();
+  if( !pTsd ){
+    goto no_mem;
+  }
 
   if( p->magic!=VDBE_MAGIC_RUN ) return SQLITE_MISUSE;
   pTsd->nRef++;
@@ -4615,7 +4618,9 @@ vdbe_halt:
   }
   sqlite3VdbeHalt(p);
   p->pTos = pTos;
-  pTsd->nRef--;
+  if( pTsd ){
+    pTsd->nRef--;
+  }
   return rc;
 
   /* Jump to here if a malloc() fails.  It's hard to get a malloc()
diff --git a/src/vdbeapi.c b/src/vdbeapi.c
index 19ab3474b2..4b5c13642e 100644
--- a/src/vdbeapi.c
+++ b/src/vdbeapi.c
@@ -242,7 +242,8 @@ int sqlite3_step(sqlite3_stmt *pStmt){
 #endif
 
   sqlite3Error(p->db, rc, p->zErrMsg ? "%s" : 0, p->zErrMsg);
-  return sqlite3ApiExit(p->db, rc);
+  p->rc = sqlite3ApiExit(p->db, p->rc);
+  return rc;
 }
 
 /*