John Sully
60c35d6ea7
Remove race conditions
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Former-commit-id: 5a8cb77d0df7f319809ff965a72fe46925f49289
2019-10-22 23:26:37 -04:00
John Sully
b1190c24a8
Optimize deadlock detection, fix callstack for ASM, and annotate locks
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Note: This change moves our assembly code to use the GNU Assembler because NASM seems to be incapable of emitting the necessary debug information for callstack unwinding to work.
Former-commit-id: 600fc241cfe79b9b32ac6010c6ea0c66747f0f15
2019-10-22 21:34:51 -04:00
John Sully
8aea7f8586
Implement deadlock detection
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Former-commit-id: fa797408d9c5d5f12053641144fe1a8b24f66185
2019-10-22 00:43:32 -04:00
John Sully
5cb7ec841a
Add support for sanitizers and fix issues they have found
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Former-commit-id: 58971a430dd3e4e8c39c7b5288211bc2ba7699ed
2019-07-18 18:39:42 -04:00
John Sully
8cd37fae2c
Fix deadlock with client and ae locks
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Former-commit-id: 8630339e43c1de1cd723bdfdca8ab5924e2cb8b0
2019-07-12 20:46:50 -04:00
John Sully
9983a59895
Fix additional warnings
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Former-commit-id: 1531cfb7eea1824fb40da596b3446baa4312355c
2019-06-27 16:29:36 -04:00
John Sully
f5f4815041
Fix mac build breaks
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Former-commit-id: 16a89f21dc0beb23b7eb8f2e378d076da918c0d6
2019-06-27 15:04:09 -04:00
John Sully
d65ce6fbbc
Fix issues with relaxed memory model architectures
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Former-commit-id: e37bc4ad40e852b67ee14e5aa87fd2f398f00eed
2019-06-17 23:00:12 -04:00
John Sully
049ca9bf58
Even the next up thread should sleep in the futex
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Former-commit-id: 8b76b01bfe710603bcdc101da6eb27afcee7e1b1
2019-06-17 23:00:12 -04:00
John Sully
dd7cbbe730
Fallback to a futex if we spin for a long time
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Former-commit-id: ec57b4b0248bba671e388a2257b1bd65ed8d0f44
2019-06-17 23:00:12 -04:00
John Sully
ff470686df
OS X build fixes
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Former-commit-id: 1dff223c713cba0b336f34328d223ddd675a3781
2019-03-24 18:06:57 -04:00
John Sully
4c82a94f3a
comment issue
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Former-commit-id: 19956b3807aa6895b438162f39d17db17ef726f4
2019-03-21 22:18:48 +00:00
John Sully
c1f7c0bcd5
Polarity of the weak flag was wrong. We want to use the strong variant of atomic_compare_exchange always
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Former-commit-id: ab9122f2cb910bb5560a9fde16bc3c096ecfb510
2019-03-21 22:17:04 +00:00
John Sully
fbe1a6c52a
Add debugging stats to the INFO command
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Former-commit-id: ac80a5c6a6676f45ac7d460a9cfb02fef8b48d78
2019-03-19 22:04:33 -04:00
John Sully
8f452efca3
write fastlock_unlock in ASM... because its faster
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Former-commit-id: bad73faf28f879d32c4064389b69c83e9474115a
2019-03-02 16:47:27 -05:00
John Sully
f446785084
Rewrite our spinlock in assembly, pretty big performance improvement
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Former-commit-id: 40d7a701feefd36e9e3fdb6d516228c4a70fcf3d
2019-02-25 18:21:27 -05:00
John Sully
dbd82f6bfc
Lock use after free
2019-02-22 21:00:14 -05:00
John Sully
6c6d913a86
Remove unnecessary mfences
2019-02-22 15:49:22 -05:00
John Sully
2788cf57b0
Implement try_lock
2019-02-22 01:23:31 -05:00
John Sully
d48cf2494d
Change fastlock implementation from naive spinlock to a ticket lock for better fairness and lower peak latency
2019-02-21 00:16:47 -05:00
John Sully
8e8abb2ff9
Cleanup lock contention, and ensure clients are written to in an unsafe way when the global lock is released
2019-02-20 23:30:21 -05:00
John Sully
627c19e02f
Multithreading works!
2019-02-20 01:20:26 -05:00
John Sully
0914b52ffa
Thread safety fixes
2019-02-18 22:25:35 -05:00
John Sully
c0eb2e5193
Fix recursive fastlock...
2019-02-16 14:25:14 -05:00
John Sully
8b7e441997
Make the lock recursive, this is because processEventsWhileBlocked may cause us to lock multiple times
2019-02-15 14:11:05 -05:00
John Sully
eefa3e9168
Fastlock fixes
2019-02-10 22:00:19 -05:00
John Sully
bd46c2041e
move ae to C++
2019-02-10 20:24:11 -05:00
