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Implement the "lookaside" memory allocation cache. Use of this cache makes

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the speed1.test script run about 15% faster.  Added new interfaces to
control the cache. (CVS 5488)

FossilOrigin-Name: e48f9697e9fea339e150ddc32940760027dd07d9
This commit is contained in:
drh
2008-07-28 19:34:53 +00:00
parent 78bd9ca86f
commit 633e6d57d9
50 changed files with 999 additions and 624 deletions
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10
src/date.c
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@@ -16,7 +16,7 @@
** sqlite3RegisterDateTimeFunctions() found at the bottom of the file.
** All other code has file scope.
**
** $Id: date.c,v 1.86 2008/07/25 16:39:25 drh Exp $
** $Id: date.c,v 1.87 2008/07/28 19:34:53 drh Exp $
**
** SQLite processes all times and dates as Julian Day numbers. The
** dates and times are stored as the number of days since noon
@@ -849,9 +849,11 @@ static void strftimeFunc(
u64 n;
int i, j;
char *z;
sqlite3 *db;
const char *zFmt = (const char*)sqlite3_value_text(argv[0]);
char zBuf[100];
if( zFmt==0 || isDate(context, argc-1, argv+1, &x) ) return;
db = sqlite3_context_db_handle(context);
for(i=0, n=1; zFmt[i]; i++, n++){
if( zFmt[i]=='%' ){
switch( zFmt[i+1] ){
@@ -887,11 +889,11 @@ static void strftimeFunc(
}
if( n<sizeof(zBuf) ){
z = zBuf;
}else if( n>sqlite3_context_db_handle(context)->aLimit[SQLITE_LIMIT_LENGTH] ){
}else if( n>db->aLimit[SQLITE_LIMIT_LENGTH] ){
sqlite3_result_error_toobig(context);
return;
}else{
z = sqlite3Malloc( n );
z = sqlite3DbMallocRaw(db, n);
if( z==0 ){
sqlite3_result_error_nomem(context);
return;
@@ -956,7 +958,7 @@ static void strftimeFunc(
}
z[j] = 0;
sqlite3_result_text(context, z, -1,
z==zBuf ? SQLITE_TRANSIENT : sqlite3_free);
z==zBuf ? SQLITE_TRANSIENT : SQLITE_DYNAMIC);
}
/*