David Xu
8bf1a48cb3
Replace userland rwlock with a pure kernel based rwlock, the new
...
implementation does not switch pointers when it resumes waiters.
Asked by: jeff
2008-04-02 04:32:31 +00:00
David Xu
6fdfcacb4a
Remove umtx_t definition, use type long directly, add wrapper function
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_thr_umtx_wait_uint() for umtx operation UMTX_OP_WAIT_UINT, use the
function in semaphore operations, this fixed compiler warnings.
2007-11-21 05:21:58 +00:00
David Xu
842a092b74
Check environment variable PTHREAD_ADAPTIVE_SPIN, if it is set, use
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it as a default spin cycle count.
2006-12-20 04:43:34 +00:00
David Xu
8a8178c010
Create inline function _thr_umutex_trylock2 to only try one atomic
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operation, if it is failed, we call syscall directly, this saves
one atomic operation per lock contention.
2006-12-14 13:22:02 +00:00
David Xu
670b44d65a
Add _thr_ucond_init().
2006-12-05 06:53:44 +00:00
David Xu
2bd2c90703
Use kernel provided userspace condition variable to implement pthread
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condition variable.
2006-12-04 14:20:41 +00:00
David Xu
8042f26d52
o Make _thr_umutex_init a function.
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o Eliminate unused parameter for some functions.
o Convert type of first parameter to void * for _thr_umtx_wait
and _thr_umtx_wake.
2006-10-13 22:31:00 +00:00
David Xu
bddd24cd9c
Replace internal usage of struct umtx with umutex which can supports
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real-time if we want, no functionality is changed.
2006-09-06 04:04:10 +00:00
David Xu
cf13ecda6a
Add umutex APIs.
2006-08-28 04:47:27 +00:00
David Xu
8429e73473
Hide umtx API symbols as well.
2005-12-21 03:53:29 +00:00
David Xu
2ff77b9220
Cast to uintptr_t to avoid compiler warning, it was broken by
...
the recent atomic_ptr() change.
2005-07-28 03:34:54 +00:00
David Xu
a091d823ad
Import my recent 1:1 threading working. some features improved includes:
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1. fast simple type mutex.
2. __thread tls works.
3. asynchronous cancellation works ( using signal ).
4. thread synchronization is fully based on umtx, mainly, condition
variable and other synchronization objects were rewritten by using
umtx directly. those objects can be shared between processes via
shared memory, it has to change ABI which does not happen yet.
5. default stack size is increased to 1M on 32 bits platform, 2M for
64 bits platform.
As the result, some mysql super-smack benchmarks show performance is
improved massivly.
Okayed by: jeff, mtm, rwatson, scottl
2005-04-02 01:20:00 +00:00
