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1468 commits 3 branches 1 tag 14 MiB
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168 commits

Author SHA1 Message Date
Sears Russell
7f332f85cc fix deadlock in filePool logger. The deadlock was due to pages being evicted before Tupdate() released the log entry for writeback. Now, we track another timestamp, so that Tupdate() starts with something analogous to a writelock, and downgrades it to a readlock before pinning pages, and invoking callbacks 2011-07-15 17:37:50 +00:00
Sears Russell
9244d4607f fix api violation 2011-07-15 16:29:12 +00:00
Sears Russell
d8621db18f move latching stuff to util/, blobs to operations/ 2011-06-13 11:26:25 +00:00
Sears Russell
a89c09d87c moved in-memory data structures and hash functions to util/ 2011-06-13 10:19:44 +00:00
Sears Russell
87d4563ab5 move compression and latchFree page formats to experimental/ 2011-06-13 08:02:20 +00:00
Sears Russell
377788a13e move a bunch of multiplexer and lsm related stuff into experimental/ directory 2011-06-13 06:58:34 +00:00
Sears Russell
c5a36c032d remove compensations.h (This is a big change, and impacts lots of whitespace. I have left some indentation breakage in place in order to minimize the size of the diff) 2011-06-12 08:13:34 +00:00
Sears Russell
0bce11e0c8 silence compiler warnings about tests for old broken non_blocking handle 2011-04-20 20:46:38 +00:00
Sears Russell
78789a868f re-enable old buffer manager test 2011-04-20 20:44:51 +00:00
Sears Russell
935407be51 fix compiler wranings in check_linearHashNTA 2011-04-20 20:38:22 +00:00
Sears Russell
853394f022 fix compiler warnings regarding min and concurrentRingbuffer 2011-04-20 20:34:39 +00:00
Sears Russell
fbdc102d6c change replacementPolicy to avoid a malloc / free during page pins 2011-04-20 20:25:17 +00:00
Sears Russell
84bbeca165 filePool implementation is more-or-less complete. added remaining functions and latching 2011-04-19 18:51:43 +00:00
Sears Russell
5f3be196fe forgot to commit unit test for filePool 2011-04-18 20:34:19 +00:00
Sears Russell
2f664271b4 partial implementation of filePool log format. force and truncate are unimplemented, as is attempting to read unflushed data. 2011-04-18 20:31:19 +00:00
Sears Russell
175c26e125 add flush and shutdown apis to concurrent ringbuffer, tighten up get_rd_buf api 2011-04-18 20:21:16 +00:00
Sears Russell
e087c9c073 add alternative implementation of min aggregate for small sets. It avoids red black overheads, but some operations are linear in the number of values considered by the aggregate 2011-04-18 20:04:33 +00:00
Sears Russell
304b439217 new data structures: min aggregate and concurrent ringbuffer 2011-04-14 23:03:20 +00:00
Sears Russell
e1201970b6 add firstPendingEntry call to log API, use finer grained latches in Tupdate(). 2011-04-01 17:25:46 +00:00
Sears Russell
de8bf53e98 fix some header #include problems 2011-02-22 19:12:38 +00:00
Sears Russell
fb5791e7e4 one line fix to concurrentHashTable, plus documentation and improved unit tests. 2011-02-15 02:57:19 +00:00
Sears Russell
14d8cebdcc dbug stuff. for now, you have to edit cmakelists.txt to set the location of dbug. 2011-02-14 22:09:57 +00:00
Sears Russell
afc9991156 dbug mode for buffer manager - run with two threads, and a handful of ops/thread 2011-02-07 23:53:20 +00:00
Sears Russell
a4a72b601e short circuit no-op aborted transactions; add unit test for no-op commits and aborts 2011-01-05 19:10:57 +00:00
Sears Russell
0a461faa04 add "raid1" a simple mirroring I/O handle implementation 2010-12-03 03:51:24 +00:00
Sears Russell
2105337d7f disable tests of dead code that are known to fail 2010-10-19 21:05:54 +00:00
Sears Russell
4a5d14f2c6 more non_blocking fixes. now the unit test passes 2010-09-23 19:52:54 +00:00
Sears Russell
bb904e85cf add latch-free slotted pages, and a bug-fix in page.c 2010-09-17 01:10:42 +00:00
Sears Russell
00e474e3fe Fix bug in LinearHashNTA: inserting over an old key, then aborting set deleted the old key instead of restoring it to its original value 2010-09-01 04:01:20 +00:00
Sears Russell
e5528ce218 relaxed page latching requirements; page.c, and dirtyPageTable no longer check / rely on holding rwlatch; removed (now) unnecessary latching from unit tests 2010-08-06 00:19:19 +00:00
Sears Russell
7a27e39e5b MAX_BUFFER_SIZE is now a runtime (pre-tinit) option; clean up some doxygen warnings 2010-07-16 16:52:08 +00:00
Sears Russell
2d645beb42 cleaned up multipage operations a bit; added stasis_segments_enabled flag 2010-05-11 22:01:37 +00:00
Sears Russell
07df7c064a add support for multi-page operations 2010-05-11 00:17:07 +00:00
Sears Russell
04de939e42 fix null pointer derefence in lruFast.c; add unit tests to check for this bug 2010-04-21 21:34:00 +00:00
Sears Russell
c7fa929e71 This fixes in Stasis issue 22. 
Replacement policies now track the pin count of each page that they interact with.  This behavior used to live in bufferHash, and had never been ported to concurrentBufferManager.

For various reasons, the pin counts have to be updated atomically with the LRU state.  This would be very difficult to do inside of concurrentBufferManager, which sometimes needs to add and remove pages to replacement policies without holding any other latches.
 2010-04-20 01:09:32 +00:00
Sears Russell
5138af6d1c leave 2 pages in reserve for stale pin test (as opposed to one) 2010-04-19 23:09:30 +00:00
Sears Russell
7c5eb2a7e9 added dup method to io handles 2010-04-08 23:50:01 +00:00
Sears Russell
d281282533 fix concurrentWrapper so that it implements the same api as the other replacement policies (it used to livelock when no pages were available. It now returns null). 2010-03-31 22:37:42 +00:00
Sears Russell
3c27ed566e add prefetch primitives 2010-03-29 22:29:30 +00:00
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
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
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
903728c589 shorten dirtyPageTable test. 2010-01-22 23:39:42 +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
17ac09c652 fix deadlock in check_multiplexer. 2010-01-21 21:53:18 +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
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