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
Sears Russell
250223086c
reordered includes for compatibility with gcc3
2010-01-21 00:03:17 +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
022136d3c3
move inMemoryLog, to the new api
2010-01-11 22:55:55 +00:00
Sears Russell
d71e248291
removed freeLogEntry
2010-01-11 20:41:59 +00:00
Sears Russell
f3d06543e5
silence spammy debugging messages; clean up check_io test case implementation a bit
2010-01-06 23:44:07 +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
2ff421bff0
initial opensolaris port
2009-11-29 03:22:36 +00:00
Sears Russell
675bdce24a
wrote some wrappers that emulate redblack; default to stl tree for now
2009-11-24 00:24:18 +00:00
Sears Russell
07053987ef
speed up test a bit
2009-11-09 22:58:55 +00:00
Sears Russell
8bd0616f97
new concurrent buffer manager
2009-11-09 19:50:00 +00:00
Sears Russell
f5e3ab2d91
concurrent hashtable seems to be working; still need to work out atomicity primitives (eg; options to leave the bucket locked on success)
2009-10-19 21:55:25 +00:00
Sears Russell
1cf16f62f2
add optional support for gcc atomics to transaction table
2009-10-15 22:46:25 +00:00
Sears Russell
5df5512d91
fixed unit test bug; logWriters may now return NULL when readers attempt to read before the beginning of the log
2009-10-15 18:48:58 +00:00
Sears Russell
4b2cfb2b23
fix latching bug in unit test
2009-10-15 17:45:43 +00:00
Sears Russell
331f680c09
partial rewrite of transaction table to reduce thread contention
2009-10-15 02:33:08 +00:00
Sears Russell
4565aff9de
more refactoring; no more globals in transactionTable.c
2009-10-14 21:22:50 +00:00
Sears Russell
20a3fe9df5
add support for soft commits, and making prior soft commits durable
2009-10-12 19:16:41 +00:00
Sears Russell
942ba7fffc
bugfixes + support for hard limits on log size
2009-10-08 22:48:58 +00:00
Sears Russell
6a02f2f159
buffer manager implementation is now determined by an overridable factory method
2009-10-05 22:39:09 +00:00
Sears Russell
0a1ca5e1cc
make compilation succeed on macosx; this will still run macs out of disk space. Also, it disables a number of binaries that probably should be supported on macs.
2009-10-02 00:45:10 +00:00
Sears Russell
4689582cb5
improve log performance by disabling O_SYNC by default (and use fdatasync instead)
2009-09-12 16:20:13 +00:00
Sears Russell
1ce1496226
dependency cleanups; removed compenastions from alloc.c
2009-08-22 00:01:02 +00:00
Sears Russell
3760fd1fea
Add missing page lock acquisition to unit test.
2009-08-08 07:52:02 +00:00
Sears Russell
4d2e70f9f3
Set appropriate timeout.
2009-08-08 07:50:06 +00:00
Sears Russell
907a24b68e
dirty page table flush was pinning pages, then asserting they were not pinned; updated page writeback api to allow correct usage
2009-08-08 01:43:03 +00:00
Sears Russell
3243396cb4
add dirtyPageTable unit test
2009-08-05 19:51:46 +00:00
Sears Russell
5b10bcc63b
Reimplemented allocationPolicy.c; updated API + added more cases to the unit tests.
2009-08-05 06:35:11 +00:00
Sears Russell
beb14ec917
implemented timeouts
2009-07-30 23:16:15 +00:00
Sears Russell
ebd6b14dbf
single-page btrees are working
2009-07-29 21:03:16 +00:00
Sears Russell
0a308f035c
more header cleaning; updated INSTALL
2009-07-26 19:47:05 +00:00
Sears Russell
260310e151
Add page ops for tree implementations.
2009-07-26 06:18:54 +00:00
