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Overview
| Comment: | Prevent possible race conditions involving the managed backup API methods. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
fc724d683a1604bc3fcb27c6ad62363f |
| User & Date: | mistachkin 2012-06-02 00:54:41 |
Context
|
2012-06-05
| ||
| 03:19 | Add SetMemoryStatus instance method to the SQLiteConnection class and the necessary internal infrastructure to support it. Also, fixup several doc comments and bump all versions to 1.0.82.0. check-in: 9ecb2876c2 user: mistachkin tags: trunk | |
|
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 | |
Changes
Changes to System.Data.SQLite/SQLite3.cs.
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SQLiteBackupHandle handle = backup._sqlite_backup;
if (handle == null)
throw new InvalidOperationException(
"Backup object has an invalid handle.");
int n = UnsafeNativeMethods.sqlite3_backup_step(handle, nPage);
backup._stepResult = n; /* NOTE: Save for use by FinishBackup. */
if (n == (int)SQLiteErrorCode.Ok)
{
return true;
}
else if (n == (int)SQLiteErrorCode.Busy)
................................................................................
SQLiteBackupHandle handle = backup._sqlite_backup;
if (handle == null)
throw new InvalidOperationException(
"Backup object has an invalid handle.");
return UnsafeNativeMethods.sqlite3_backup_remaining(handle);
}
/// <summary>
/// Returns the total number of pages in the source database associated
/// with the specified backup object.
/// </summary>
/// <param name="backup">The backup object to check.</param>
................................................................................
SQLiteBackupHandle handle = backup._sqlite_backup;
if (handle == null)
throw new InvalidOperationException(
"Backup object has an invalid handle.");
return UnsafeNativeMethods.sqlite3_backup_pagecount(handle);
}
/// <summary>
/// Destroys the backup object, rolling back any backup that may be in
/// progess.
/// </summary>
/// <param name="backup">The backup object to destroy.</param>
................................................................................
SQLiteBackupHandle handle = backup._sqlite_backup;
if (handle == null)
throw new InvalidOperationException(
"Backup object has an invalid handle.");
int n = UnsafeNativeMethods.sqlite3_backup_finish(handle);
handle.SetHandleAsInvalid();
if ((n > 0) && (n != backup._stepResult))
throw new SQLiteException(n, GetLastError());
}
///////////////////////////////////////////////////////////////////////////////////////////////
|
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SQLiteBackupHandle handle = backup._sqlite_backup;
if (handle == null)
throw new InvalidOperationException(
"Backup object has an invalid handle.");
IntPtr handlePtr = handle;
if (handlePtr == IntPtr.Zero)
throw new InvalidOperationException(
"Backup object has an invalid handle pointer.");
int n = UnsafeNativeMethods.sqlite3_backup_step(handlePtr, nPage);
backup._stepResult = n; /* NOTE: Save for use by FinishBackup. */
if (n == (int)SQLiteErrorCode.Ok)
{
return true;
}
else if (n == (int)SQLiteErrorCode.Busy)
................................................................................
SQLiteBackupHandle handle = backup._sqlite_backup;
if (handle == null)
throw new InvalidOperationException(
"Backup object has an invalid handle.");
IntPtr handlePtr = handle;
if (handlePtr == IntPtr.Zero)
throw new InvalidOperationException(
"Backup object has an invalid handle pointer.");
return UnsafeNativeMethods.sqlite3_backup_remaining(handlePtr);
}
/// <summary>
/// Returns the total number of pages in the source database associated
/// with the specified backup object.
/// </summary>
/// <param name="backup">The backup object to check.</param>
................................................................................
SQLiteBackupHandle handle = backup._sqlite_backup;
if (handle == null)
throw new InvalidOperationException(
"Backup object has an invalid handle.");
IntPtr handlePtr = handle;
if (handlePtr == IntPtr.Zero)
throw new InvalidOperationException(
"Backup object has an invalid handle pointer.");
return UnsafeNativeMethods.sqlite3_backup_pagecount(handlePtr);
}
/// <summary>
/// Destroys the backup object, rolling back any backup that may be in
/// progess.
/// </summary>
/// <param name="backup">The backup object to destroy.</param>
................................................................................
SQLiteBackupHandle handle = backup._sqlite_backup;
if (handle == null)
throw new InvalidOperationException(
"Backup object has an invalid handle.");
IntPtr handlePtr = handle;
if (handlePtr == IntPtr.Zero)
throw new InvalidOperationException(
"Backup object has an invalid handle pointer.");
int n = UnsafeNativeMethods.sqlite3_backup_finish(handlePtr);
handle.SetHandleAsInvalid();
if ((n > 0) && (n != backup._stepResult))
throw new SQLiteException(n, GetLastError());
}
///////////////////////////////////////////////////////////////////////////////////////////////
|