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219 commits

Author SHA1 Message Date
Sears Russell
6525949f56 add paranoid checks to concurrentHash and concurrentBufferManager; tightened up invariants maintained by concurrentHash 2010-09-30 19:27:18 +00:00
Sears Russell
00cf4eb4ce fix bug in lru backoff, add flag for buffer manager stress testing, add support for buffer manager handles to concurrentBufferManager, fix support in bufferHash 2010-09-28 23:50:07 +00:00
Sears Russell
ae04cee76c exponential backoff and power of two bucket flag for concurrenntWrapper (disabled by default) 2010-09-27 00:11:34 +00:00
Sears Russell
4fe5bcaa72 Refactored doubleLinkedList and lruFast. The linked list API is now less insane, and lruFast is simpler. Added asserts to detect double insertion of nodes into the lists / lru 2010-09-24 17:56:51 +00:00
Sears Russell
a3e7fc0fe2 add hint: stasis_buffer_manager_hint_writes_are_sequential. if set to 1, then only one thread will write back at a time, which leads to greatly improved sequential write throughput 2010-09-23 23:09:43 +00:00
Sears Russell
58c909a2ea add implementations of some more rblookup flags to the stl red black tree adapter 2010-09-23 20:38:50 +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
b722adff8a added DEBUG() statements 2010-08-05 23:07:52 +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
e2ba421a53 cleaned up buffer manager comments, added some asserts 2010-07-13 18:17:25 +00:00
Sears Russell
ee7aaff9ec add writeback starvation avoidance logic to concurrentBufferManager 2010-07-09 01:55:54 +00:00
Sears Russell
d4804bd926 add rwlc: A read-write lock that can wait on pthread conditions (assuming it holds the write lock) 2010-05-27 01:48:27 +00:00
Sears Russell
dc1f799a37 TarrayListAlloc() and TarrayListExtend() now generate O(1) bytes of log entries; they use the new multipage operation type. 2010-05-11 23:34:13 +00:00
Sears Russell
820f706faf TarrayListExtend now zeros out the contents of the newly allocated records (this is implemented by having fixed.c zero out the records) 2010-05-11 23:27:22 +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
31d045efba add link to my dissertation 2010-05-05 19:27:27 +00:00
Sears Russell
85ad4dd316 updated getting started text 2010-05-05 18:54:45 +00:00
Sears Russell
ffa4f18283 add tryToWriteBackPage. concurrentBufferManager is now compatible with FORCE mode transactions. 2010-04-28 00:05:00 +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
887832582c expose stasis_handle_t up through the buffer manager; add sequential I/O hinting; fix stupid busy-wait in prefetch 2010-04-12 20:54:10 +00:00
Sears Russell
7c5eb2a7e9 added dup method to io handles 2010-04-08 23:50:01 +00:00
Sears Russell
ff2f2e9e1e add TregionPrefetch() 2010-03-31 22:41:33 +00:00
Sears Russell
3c27ed566e add prefetch primitives 2010-03-29 22:29:30 +00:00
Sears Russell
8a5bbd9a38 silence compiler warning 2010-03-29 22:28:32 +00:00
Sears Russell
6deb34f5b2 fix handling of loadPageForOperation during recovery; initialize rid.size in slottedLast 2010-03-22 19:56:55 +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
0afb9177ac C++ compatibility fix 2010-02-11 22:18:49 +00:00
Sears Russell
1ff9afb753 added new constant: INVALID_SIZE 2010-02-11 20:36:33 +00:00
Sears Russell
49979ffa52 unit test for libredblack 2010-01-21 23:48:43 +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
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
c8cc188b71 unsigned int -> uint32_t 2010-01-19 01:47:13 +00:00
Sears Russell
d71e248291 removed freeLogEntry 2010-01-11 20:41:59 +00:00
Sears Russell
c30aaa3a1a fix compiler warning; -1 is not comparable to entry->type 2010-01-07 21:50:17 +00:00
Sears Russell
1af589dd18 remove malloc and memcpy from the in_memory_log read path 2009-12-31 23:25:56 +00:00
Sears Russell
1409a9eb27 more refactoring; log handles now manage their log entries memory 2009-12-31 23:01:37 +00:00
Sears Russell
a5788688c8 refactor getUpdateArgs; remove a bunch of casts, fix a bunch of warnings 2009-12-31 20:20:47 +00:00
Sears Russell
9aa1d9d652 pull memcpy out of allocUpdateEntry() 2009-12-31 19:30:40 +00:00
Sears Russell
32e40c949d added log modes to sequentialThroughput benchmark, added methods for concurrent appends to log api (and stubbed them out) 2009-12-31 19:02:34 +00:00
Sears Russell
7ff80f37ef add deferred, end of transaction callbacks. addresses issue 15 2009-12-15 06:30:37 +00:00
Sears Russell
efc6a0eabd add missing function declaration 2009-12-10 01:53:15 +00:00
Sears Russell
cd8c63889d clarify documentation 2009-12-09 19:55:27 +00:00
Sears Russell
83a0ec68fe fix rose bit rot, have unintialized page clear the impl pointer (for tidyness), remove some resolved @todos. 2009-12-04 19:33:09 +00:00
Sears Russell
7d1b702239 revert part of opensolaris patch--pack recordids again 2009-11-30 01:01:30 +00:00
Sears Russell
2ff421bff0 initial opensolaris port 2009-11-29 03:22:36 +00:00