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MemoryVFS journal.

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Nuno Cruces
2023-05-31 03:24:21 +01:00
parent 830240c368
commit dc3dc6853d
12 changed files with 54 additions and 51 deletions
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20
sqlite3/deserialize.patch Normal file
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@@ -0,0 +1,20 @@
--- sqlite3.c.orig
+++ sqlite3.c
@@ -60425,7 +60425,7 @@
int rc = SQLITE_OK; /* Return code */
int tempFile = 0; /* True for temp files (incl. in-memory files) */
int memDb = 0; /* True if this is an in-memory file */
-#ifndef SQLITE_OMIT_DESERIALIZE
+#if 1
int memJM = 0; /* Memory journal mode */
#else
# define memJM 0
@@ -60628,7 +60628,7 @@
int fout = 0; /* VFS flags returned by xOpen() */
rc = sqlite3OsOpen(pVfs, pPager->zFilename, pPager->fd, vfsFlags, &fout);
assert( !memDb );
-#ifndef SQLITE_OMIT_DESERIALIZE
+#if 1
pPager->memVfs = memJM = (fout&SQLITE_OPEN_MEMORY)!=0;
#endif
readOnly = (fout&SQLITE_OPEN_READONLY)!=0;

3
sqlite3/download.sh
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@@ -8,6 +8,9 @@ unzip -d . sqlite-amalgamation-*.zip
mv sqlite-amalgamation-*/sqlite3* .
rm -rf sqlite-amalgamation-*
patch < vfs_find.patch
patch < deserialize.patch
cd ext/
curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.42.0/ext/misc/decimal.c"
curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.42.0/ext/misc/uint.c"

16
sqlite3/sqlite_cfg.h
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@@ -30,6 +30,9 @@
// Other Options
#define SQLITE_ALLOW_URI_AUTHORITY
#define SQLITE_ENABLE_BATCH_ATOMIC_WRITE
#define SQLITE_ENABLE_ATOMIC_WRITE
#define SQLITE_OMIT_DESERIALIZE
// Because WASM does not support shared memory,
// SQLite disables WAL for WASM builds.
@@ -55,16 +58,5 @@
// #define SQLITE_ENABLE_SESSION
// #define SQLITE_ENABLE_PREUPDATE_HOOK
// https://stackoverflow.com/a/50616684
#define SECOND(...) SECOND_I(__VA_ARGS__, , )
#define SECOND_I(A, B, ...) B
#define GLUE(A, B) GLUE_I(A, B)
#define GLUE_I(A, B) A##_##B
#define CREATE_REPLACER(A) SECOND(GLUE(A, __LINE__), A)
#define REPLACE_AT_LINE(A) , A
// Implemented in vfs.c.
int localtime_s(struct tm *const pTm, time_t const *const pTime);
#define sqlite3_vfs_find CREATE_REPLACER(sqlite3_vfs_find_wrapper)
#define sqlite3_vfs_find_wrapper_25397 REPLACE_AT_LINE(sqlite3_vfs_find)
int localtime_s(struct tm *const pTm, time_t const *const pTime);

5
sqlite3/vfs.c
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@@ -87,8 +87,7 @@ int localtime_s(struct tm *const pTm, time_t const *const pTime) {
return go_localtime(pTm, (sqlite3_int64)*pTime);
}
#undef sqlite3_vfs_find
sqlite3_vfs *sqlite3_vfs_find_wrapper(const char *zVfsName) {
sqlite3_vfs *sqlite3_vfs_find(const char *zVfsName) {
if (zVfsName) {
static sqlite3_vfs *go_vfs_list;
sqlite3_vfs *found = NULL;
@@ -130,7 +129,7 @@ sqlite3_vfs *sqlite3_vfs_find_wrapper(const char *zVfsName) {
return go_vfs_list;
}
}
return sqlite3_vfs_find(zVfsName);
return sqlite3_vfs_find_orig(zVfsName);
}
static_assert(offsetof(struct go_file, handle) == 4, "Unexpected offset");

11
sqlite3/vfs_find.patch Normal file
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@@ -0,0 +1,11 @@
--- sqlite3.c.orig
+++ sqlite3.c
@@ -25394,7 +25394,7 @@
** Locate a VFS by name. If no name is given, simply return the
** first VFS on the list.
*/
-SQLITE_API sqlite3_vfs *sqlite3_vfs_find(const char *zVfs){
+SQLITE_API sqlite3_vfs *sqlite3_vfs_find_orig(const char *zVfs){
sqlite3_vfs *pVfs = 0;
#if SQLITE_THREADSAFE
sqlite3_mutex *mutex;