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Overview
| Comment: | Prevent possible race conditions involving the managed backup API methods. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
fc724d683a1604bc3fcb27c6ad62363f |
| User & Date: | mistachkin 2012-06-02 00:54:41.783 |
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.
| ︙ | ︙ | |||
1512 1513 1514 1515 1516 1517 1518 |
SQLiteBackupHandle handle = backup._sqlite_backup;
if (handle == null)
throw new InvalidOperationException(
"Backup object has an invalid handle.");
| > > > > > > | | 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 |
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)
|
| ︙ | ︙ | |||
1559 1560 1561 1562 1563 1564 1565 |
SQLiteBackupHandle handle = backup._sqlite_backup;
if (handle == null)
throw new InvalidOperationException(
"Backup object has an invalid handle.");
| > > > > > > | | 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 |
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>
|
| ︙ | ︙ | |||
1581 1582 1583 1584 1585 1586 1587 |
SQLiteBackupHandle handle = backup._sqlite_backup;
if (handle == null)
throw new InvalidOperationException(
"Backup object has an invalid handle.");
| > > > > > > | > > > > > > | | 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 |
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>
internal override void FinishBackup(
SQLiteBackup backup
)
{
if (backup == null)
throw new ArgumentNullException("backup");
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());
}
///////////////////////////////////////////////////////////////////////////////////////////////
|
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