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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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29
src/test_init.c
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@@ -30,9 +30,9 @@
#include <tcl.h>
static struct Wrapped {
sqlite3_pcache_methods pcache;
sqlite3_mem_methods mem;
sqlite3_mutex_methods mutex;
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 */
@@ -123,8 +123,8 @@ static void wrPCacheShutdown(void *pArg){
wrapped.pcache_init = 0;
}
static sqlite3_pcache *wrPCacheCreate(int a, int b){
return wrapped.pcache.xCreate(a, b);
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);
@@ -132,13 +132,18 @@ static void wrPCacheCachesize(sqlite3_pcache *p, int n){
static int wrPCachePagecount(sqlite3_pcache *p){
return wrapped.pcache.xPagecount(p);
}
static void *wrPCacheFetch(sqlite3_pcache *p, unsigned a, int b){
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, void *a, int 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, void *a, unsigned b, unsigned c){
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){
@@ -154,7 +159,7 @@ static void installInitWrappers(void){
wrMutexFree, wrMutexEnter, wrMutexTry,
wrMutexLeave, wrMutexHeld, wrMutexNotheld
};
sqlite3_pcache_methods pcachemethods = {
sqlite3_pcache_methods2 pcachemethods = {
0,
wrPCacheInit, wrPCacheShutdown, wrPCacheCreate,
wrPCacheCachesize, wrPCachePagecount, wrPCacheFetch,
@@ -173,10 +178,10 @@ static void installInitWrappers(void){
sqlite3_shutdown();
sqlite3_config(SQLITE_CONFIG_GETMUTEX, &wrapped.mutex);
sqlite3_config(SQLITE_CONFIG_GETMALLOC, &wrapped.mem);
sqlite3_config(SQLITE_CONFIG_GETPCACHE, &wrapped.pcache);
sqlite3_config(SQLITE_CONFIG_GETPCACHE2, &wrapped.pcache);
sqlite3_config(SQLITE_CONFIG_MUTEX, &mutexmethods);
sqlite3_config(SQLITE_CONFIG_MALLOC, &memmethods);
sqlite3_config(SQLITE_CONFIG_PCACHE, &pcachemethods);
sqlite3_config(SQLITE_CONFIG_PCACHE2, &pcachemethods);
}
static int init_wrapper_install(
@@ -218,7 +223,7 @@ static int init_wrapper_uninstall(
sqlite3_shutdown();
sqlite3_config(SQLITE_CONFIG_MUTEX, &wrapped.mutex);
sqlite3_config(SQLITE_CONFIG_MALLOC, &wrapped.mem);
sqlite3_config(SQLITE_CONFIG_PCACHE, &wrapped.pcache);
sqlite3_config(SQLITE_CONFIG_PCACHE2, &wrapped.pcache);
return TCL_OK;
}