Sears Russell
5ffd1110e9
Added concept of "transaction fingerprints"
...
The region allocator marks freed regions "Condemned" before actually freeing them. Condemned regions are associated
with a transaction; before they can be reused / coalesced the transaction that condemned them must complete.
The region allocator used "TisActiveTransaction(xid)" to determine whether a given transaction had completed. The
problem is that Stasis now reuses transaction id's, and condemned regions were never reclaimed in practice. A transaction
fingerprint is a unique identifier (currently transaction id, rec_lsn) that can be used to distinguish transactions that
did not execute concurrently.
I considered an alternative design based upon end-of-transaction actions. This would have worked as well, but would
have been a more invasive change.
2010-02-18 19:12:46 +00:00
Sears Russell
6454d55a42
fix bug in loadUninitializedPage(). It was passing INVALID_XID into the transaction table, which is not allowed
2010-02-18 19:04:39 +00:00
Sears Russell
4e100479d1
Add TarrayListDealloc() to arrayList. Remove one region allocation from each array list alloc. Add unit test for dealloc.
...
Also, removed some old compensations cruft.
2010-02-18 04:12:39 +00:00
Sears Russell
adfecfada3
Fix LSN handling in loadUninitializedPage()
2010-02-18 04:11:22 +00:00
Sears Russell
ba3179710b
Suppress shutdown warning when empty transactions are automatically rolled back.
2010-02-17 05:10:30 +00:00
Sears Russell
5d0500dc7a
Perl updates:
...
- Cleaned up initialization and shutdown.
- Add support for autocommitted hashes
- Wrote preliminary perldocs
- Updated sample cgi scripts.
- Added new (partial) wiki thing
- Added stasis.pl (a simple toplevel)
2010-02-17 05:05:23 +00:00
Sears Russell
98e0cb1fab
implement TregionSize(), add TregionForce()
2010-02-12 16:44:28 +00:00
Sears Russell
180fb12859
unit test for bug 22
2010-02-11 22:19:03 +00:00
Sears Russell
0afb9177ac
C++ compatibility fix
2010-02-11 22:18:49 +00:00
Sears Russell
c440f7ad62
fix typo in uncompiled code
2010-02-11 22:18:17 +00:00
Sears Russell
078d518bb6
cleaned up some lsn-free stuff
2010-02-11 21:21:31 +00:00
Sears Russell
757a877c84
added VALGRIND_MODE
2010-02-11 21:18:26 +00:00
Sears Russell
1ff9afb753
added new constant: INVALID_SIZE
2010-02-11 20:36:33 +00:00
Sears Russell
fac5d2ff37
fix default LSN handling for pages with headers
2010-02-11 20:35:38 +00:00
Sears Russell
a5abadb580
partial update for fastcgi, clean up Stasis.pm
2010-01-27 21:49:12 +00:00
Sears Russell
9bdaf23764
add some more thread-safe pblHt wrappers to fix lockManager
2010-01-23 00:27:01 +00:00
Sears Russell
031e21fa6c
fix race condition introduced by last commit
2010-01-22 23:52:57 +00:00
Sears Russell
3e2bbc2eb6
move lsn sets into reserve_entry. write_entry is now a no-op
2010-01-22 23:41:10 +00:00
Sears Russell
903728c589
shorten dirtyPageTable test.
2010-01-22 23:39:42 +00:00
Sears Russell
bb182ee0b0
fix new truncation check; it was using values for the old copy of the log to check the new copy.
2010-01-22 19:13:14 +00:00
Sears Russell
3849b5f131
silence compiler warnings
2010-01-22 19:09:58 +00:00
Sears Russell
49979ffa52
unit test for libredblack
2010-01-21 23:48:43 +00:00
Sears Russell
51dc17d1c3
fail earlier on mismatched truncation file. One run of check_multiplexer saw truncation leave a zero byte log
2010-01-21 23:48:04 +00:00
Sears Russell
bb92d86c85
fix check_lockManager. The lock manager now relies on a global mutex to protect its hashtables. Eventually, it should be ported over to the concurrentHash API (or something more general purpose...)
2010-01-21 22:43:38 +00:00
Sears Russell
434cec1b6a
fix for regression in r1335. nextUnstableLSN needs to point to the beginning of a valid log entry. Add sizeof(lsn_t) to its computation so that we point at the beginning of the next entry, not to its size
2010-01-21 22:30:02 +00:00
Sears Russell
17ac09c652
fix deadlock in check_multiplexer.
2010-01-21 21:53:18 +00:00
Sears Russell
e2498b62be
fix deadlock; reorderingHandle was acquiring a write latch while writing a log entry, leading to an inconsistent latch ordering
2010-01-21 21:05:25 +00:00
Sears Russell
dbf253275f
fix nested top action log race; because of a refactoring mistake, it was releasing a mutex without acquiring it...
2010-01-21 20:27:35 +00:00
Sears Russell
9dba8770f0
test TsoftCommit(); make sure it works when TforceCommits() is called, and when Tdeinit() is called
2010-01-21 18:57:58 +00:00
Sears Russell
5f705a4463
skip the log force when TforceCommits() is called and the entire log has already been forced. The old behavior generated a redundant CRC entry and force wrote it.
2010-01-21 18:42:50 +00:00
Sears Russell
9f0886a565
fix typo that disabled the new tests
2010-01-21 18:40:28 +00:00
Sears Russell
f2ee7b6573
fix bug exposed by new group commit behavior; nextUnstableLSN was returning the offset of the beginning of the CRC entry, not the end of it. This was causing an assertion to fail.
2010-01-21 18:28:34 +00:00
Sears Russell
250223086c
reordered includes for compatibility with gcc3
2010-01-21 00:03:17 +00:00
Sears Russell
f1f1d888e4
avoid use of -Wno-variadic-macros, which causes an error with gcc 3.
2010-01-20 23:51:54 +00:00
Sears Russell
b1f7d1947a
more log refactoring. safeWrites now holds a latch across reserve_entry, write_entry, and write_entry_done
2010-01-19 02:14:09 +00:00
Sears Russell
94b356f837
sample stasis web services for apache modperl and fastcgi. Both are multithreaded. However, the modperl one is racy. FastCGI is currently the recommended approach
2010-01-19 02:11:04 +00:00
Sears Russell
417eec45c4
harden Stasis.pm initialization against a wider range of crazy environments (ie: apache modperl and fastcgi). Add TsoftCommit and TforceCommits to the perl binding
2010-01-19 01:56:40 +00:00
Sears Russell
18508fd2f1
fix stasis_log_force and groupForce to handle INVALID_LSN properly; instead of bypassing group force in LOG_FORCE_COMMIT mode, they now unconditionally group commit. This allows TforceCommits() to take advantage of group commit
2010-01-19 01:54:53 +00:00
Sears Russell
19061227b3
fix recovery corner case; it is possible that Tdealloc() is called before the regions are registered with the allocator
2010-01-19 01:48:17 +00:00
Sears Russell
c8cc188b71
unsigned int -> uint32_t
2010-01-19 01:47:13 +00:00
Sears Russell
560cdc2330
fix compiler warning
2010-01-11 23:13:53 +00:00
Sears Russell
46b428547d
fix log entry leak in redorderingHandle
2010-01-11 23:07:08 +00:00
Sears Russell
022136d3c3
move inMemoryLog, to the new api
2010-01-11 22:55:55 +00:00
Sears Russell
fa4e4fa980
fix compile warning
2010-01-11 21:02:25 +00:00
Sears Russell
67b8808739
fix flex test
2010-01-11 21:00:46 +00:00
Sears Russell
d71e248291
removed freeLogEntry
2010-01-11 20:41:59 +00:00
Sears Russell
8999f1acd4
add -lpthread to Stasis.pm LIBS
2010-01-11 19:54:45 +00:00
Sears Russell
4e029988f3
add missing unit test
2010-01-11 19:30:20 +00:00
Sears Russell
f041f0a653
clean up perl unit tests; add support for storing tied hashes in tied hashes
2010-01-11 19:29:52 +00:00
Sears Russell
44e5e8b4fc
Refactor regions to avoid hack during startup. It used to allocate a dummy log entry, then free it. This causes trouble with the upcoming log api, since the log implementation will need to manage log entry memory for performance reasons.
2010-01-07 21:57:13 +00:00
