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Experimental change to the pcache interface to allow page buffers to be allocated separately from their associated container structures.

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FossilOrigin-Name: c275c9d323cb1dccb031b199d413ac3a0b244fea
This commit is contained in:
dan
2011-11-08 20:08:44 +00:00
parent 5802464316
commit 22e21ff4fc
12 changed files with 201 additions and 133 deletions
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19
src/main.c
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@@ -365,16 +365,25 @@ int sqlite3_config(int op, ...){
}
case SQLITE_CONFIG_PCACHE: {
/* Specify an alternative page cache implementation */
sqlite3GlobalConfig.pcache = *va_arg(ap, sqlite3_pcache_methods*);
/* no-op */
break;
}
case SQLITE_CONFIG_GETPCACHE: {
/* now an error */
rc = SQLITE_ERROR;
break;
}
case SQLITE_CONFIG_GETPCACHE: {
if( sqlite3GlobalConfig.pcache.xInit==0 ){
case SQLITE_CONFIG_PCACHE2: {
/* Specify an alternative page cache implementation */
sqlite3GlobalConfig.pcache2 = *va_arg(ap, sqlite3_pcache_methods2*);
break;
}
case SQLITE_CONFIG_GETPCACHE2: {
if( sqlite3GlobalConfig.pcache2.xInit==0 ){
sqlite3PCacheSetDefault();
}
*va_arg(ap, sqlite3_pcache_methods*) = sqlite3GlobalConfig.pcache;
*va_arg(ap, sqlite3_pcache_methods2*) = sqlite3GlobalConfig.pcache2;
break;
}