f3539396c2
*lock: Simply use compiler barrier on initialization.
11 years ago
671d067ea0
ck_bytelock: Fix casting error affecting 32-bit architectures.
11 years ago
08be876fa6
ck_bytelock: Correctly compute byte sequence length for readers.
...
Thanks to Albi Kavo <albi.kavo@gm...> for spotting this.
11 years ago
b8c801136a
ck_bytelock: Fix deadlock for unslotted reader workloads.
...
There is an off-by-one for slot ID sizeof(bytelock->readers) + 1.
This patch fixes the handling of this slot ID. Based off a patch
submitted by Albi Kavo <albi.kavo@gma....>.
11 years ago
c197b37df1
legal: Update Copyright statements.
11 years ago
44689f7e69
ck_bytelock: Migrate to acquire / release.
11 years ago
5d8a273dbe
whitespace: Bulk whitespace changes.
11 years ago
ffd22e57b8
ck_bytelock: Use ck_pr_fence_atomic.
12 years ago
f87e0caf99
ck_bytelock: Migrate to ck_pr_fence_X_Y.
12 years ago
334b15e6e0
ck_bytelock: Acquire semantics on read.
12 years ago
33a9222923
legal: Update Copyright statements.
12 years ago
d29ac5afdb
ck_bytelock: Fix downgrade path from writer to reader.
...
An off-by-one was introduced in downgrade path from writer.
This can cause deadlock if a writer downgrades from a write lock.
Pointed out by Jeffrey Birnbaum <jmb...@...>.
12 years ago
5df8882840
ck_bytelock: Switch to full semantics on unlock.
...
RW semantics may be used for shared write-side.
12 years ago
6be03bb450
ck_bytelock: Remove unnecessary load barrier on unslotted read acquisition.
...
Signed-off-by: Samy Al Bahra <sbahra@repnop.org>
12 years ago
e78bbe9ae6
ck_{rw,byte,br}lock: Serialize final loads with respect to read.
...
I will switch to a SPARC-style barrier interface.
12 years ago
d72ca391f6
ck_bytelock: Switch to RMO model.
12 years ago
fbb88a519c
ck_bytelock: read_lock must serialize all load/store before checking owner field.
...
Thanks to Andrew Schorr for reporting the unit test failure.
12 years ago
7dd549418a
ck_bytelock: Remove backoff behavior by default.
13 years ago
3cf265cba0
all: Strip trailing whitespaces.
13 years ago
706fd07de7
legal: Update Copyright statements.
13 years ago
66ebe1a874
Drop usage of CK_CC_PACKED, prefer natural alignment.
...
CK_CC_PACKED will drop structures to one-byte alignment in certain
cases. Obviously, this will mean bad performance on most architectures.
Thanks to Matt Johnson from https://rigel.crhc.illinois.edu/ for
reporting this problem.
14 years ago
cbd30b2206
Initial import.
14 years ago
Samy Al Bahra
Samy Al Bahra
Samy Al Bahra