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Overview
| Comment: | Modify the native interop assembly to help prevent possible thread race conditions between sqlite3_close_interop and sqlite3_finalize_interop. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
74a33d10da8b97429d4d4c0e285d4dd3 |
| User & Date: | mistachkin 2012-06-02 00:14:36 |
Context
|
2012-06-02
| ||
| 00:54 | Prevent possible race conditions involving the managed backup API methods. check-in: fc724d683a user: mistachkin tags: trunk | |
| 00:14 | Modify the native interop assembly to help prevent possible thread race conditions between sqlite3_close_interop and sqlite3_finalize_interop. check-in: 74a33d10da user: mistachkin tags: trunk | |
|
2012-05-27
| ||
| 21:54 | Doc and packaging updates for release 1.0.81.0. check-in: 84c0e6e786 user: mistachkin tags: trunk, release, release-1.0.81.0 | |
Changes
Changes to SQLite.Interop/src/win/interop.c.
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*/
SQLITE_API int WINAPI sqlite3_close_interop(sqlite3 *db)
{
int ret;
ret = sqlite3_close(db);
if (ret == SQLITE_BUSY && db->pVdbe)
{
while (db->pVdbe)
{
// Make a copy of the first prepared statement
Vdbe *p = (Vdbe *)sqlite3DbMallocZero_interop(db, sizeof(Vdbe));
Vdbe *po = db->pVdbe;
if (!p)
................................................................................
}
else
{
ZeroMemory(po, sizeof(Vdbe));
po->magic = VDBE_MAGIC_DEAD;
}
}
ret = sqlite3_close(db);
}
return ret;
}
SQLITE_API int WINAPI sqlite3_open_interop(const char*filename, int flags, sqlite3 **ppdb)
................................................................................
*plen = (pval != 0) ? wcslen((wchar_t *)pval) * sizeof(wchar_t): 0;
return pval;
}
SQLITE_API int WINAPI sqlite3_finalize_interop(sqlite3_stmt *stmt)
{
Vdbe *p;
sqlite3 *db;
int ret;
p = (Vdbe *)stmt;
if (p && p->magic == VDBE_MAGIC_DEAD)
{
db = p->db;
if (db == NULL)
{
sqlite3DbFree_interop(db, p);
ret = SQLITE_OK;
}
}
else
ret = sqlite3_finalize(stmt);
return ret;
}
SQLITE_API int WINAPI sqlite3_reset_interop(sqlite3_stmt *stmt)
{
int ret;
|
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*/
SQLITE_API int WINAPI sqlite3_close_interop(sqlite3 *db)
{
int ret;
ret = sqlite3_close(db);
if (ret == SQLITE_BUSY)
{
sqlite3_mutex_enter(db->mutex);
if (!db->pVdbe)
{
sqlite3_mutex_leave(db->mutex);
return ret;
}
while (db->pVdbe)
{
// Make a copy of the first prepared statement
Vdbe *p = (Vdbe *)sqlite3DbMallocZero_interop(db, sizeof(Vdbe));
Vdbe *po = db->pVdbe;
if (!p)
................................................................................
}
else
{
ZeroMemory(po, sizeof(Vdbe));
po->magic = VDBE_MAGIC_DEAD;
}
}
sqlite3_mutex_leave(db->mutex);
ret = sqlite3_close(db);
}
return ret;
}
SQLITE_API int WINAPI sqlite3_open_interop(const char*filename, int flags, sqlite3 **ppdb)
................................................................................
*plen = (pval != 0) ? wcslen((wchar_t *)pval) * sizeof(wchar_t): 0;
return pval;
}
SQLITE_API int WINAPI sqlite3_finalize_interop(sqlite3_stmt *stmt)
{
Vdbe *p;
int ret = SQLITE_OK;
p = (Vdbe *)stmt;
if (p)
{
sqlite3 *db = p->db;
if (db != NULL)
sqlite3_mutex_enter(db->mutex);
if ((p->magic == VDBE_MAGIC_DEAD) && (db == NULL))
{
sqlite3DbFree_interop(db, p);
}
else
{
ret = sqlite3_finalize(stmt);
}
if (db != NULL)
sqlite3_mutex_leave(db->mutex);
}
return ret;
}
SQLITE_API int WINAPI sqlite3_reset_interop(sqlite3_stmt *stmt)
{
int ret;
|