7 Commits

Author	SHA1	Message	Date
Rich Felker	ec2e50d0d7	cheap trick to further optimize locking normal mutexes	2011-04-14 14:39:57 -04:00
Rich Felker	124b4ebc8a	cheap special-case optimization for normal mutexes ... cycle-level benchmark on atom cpu showed typical pthread_mutex_lock call dropping from ~120 cycles to ~90 cycles with this change. benefit may vary with compiler options and version, but this optimization is very cheap to make and should always help some.	2011-03-30 08:58:25 -04:00
Rich Felker	047e434ef5	implement robust mutexes ... some of this code should be cleaned up, e.g. using macros for some of the bit flags, masks, etc. nonetheless, the code is believed to be working and correct at this point.	2011-03-17 20:41:37 -04:00
Rich Felker	b1c43161c2	unify lock and owner fields of mutex structure ... this change is necessary to free up one slot in the mutex structure so that we can use doubly-linked lists in the implementation of robust mutexes.	2011-03-17 12:21:32 -04:00
Rich Felker	d4f9e0b364	correct error returns for error-checking mutexes	2011-03-16 16:25:00 -04:00
Rich Felker	e882756311	reorganize pthread data structures and move the definitions to alltypes.h ... this allows sys/types.h to provide the pthread types, as required by POSIX. this design also facilitates forcing ABI-compatible sizes in the arch-specific alltypes.h, while eliminating the need for developers changing the internals of the pthread types to poke around with arch-specific headers they may not be able to test.	2011-02-17 17:16:20 -05:00
Rich Felker	0b44a0315b	initial check-in, version 0.5.0	2011-02-12 00:22:29 -05:00