riscv/musl - musl - Gitea: Git with a cup of tea

Commit Graph

Author	SHA1	Message	Date
Rich Felker	7fe58d3511	use count=0 instead of 1 for recursive mutex with only one lock reference this simplifies the code paths slightly, but perhaps what's nicer is that it makes recursive mutexes fully reentrant, i.e. locking and unlocking from a signal handler works even if the interrupted code was in the middle of locking or unlocking.	15 years ago
Rich Felker	c68de0be2f	avoid accessing mutex memory after atomic unlock this change is needed to fix a race condition and ensure that it's possible to unlock and destroy or unmap the mutex as soon as pthread_mutex_lock succeeds. POSIX explicitly gives such an example in the rationale and requires an implementation to allow such usage.	15 years ago
Rich Felker	eb0e8fa0b1	debloat: use __syscall instead of syscall where possible don't waste time (and significant code size due to function call overhead!) setting errno when the result of a syscall does not matter or when it can't fail.	15 years ago
Rich Felker	ec2e50d0d7	cheap trick to further optimize locking normal mutexes	15 years ago
Rich Felker	8524d6536c	revert mutex "optimization" that turned out to be worse	15 years ago
Rich Felker	aa398f56fa	global cleanup to use the new syscall interface	15 years ago
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.	15 years ago
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.	15 years ago
Rich Felker	e914f8b7ec	optimize contended normal mutex case; add int compare-and-swap atomic	15 years ago
Rich Felker	1d59f1eddb	simplify logic, slightly optimize contended case for non-default mutex types	15 years ago
Rich Felker	d4f9e0b364	correct error returns for error-checking mutexes	15 years ago
Rich Felker	31e06075d5	simplify and optimize pthread_mutex_trylock	15 years ago
Rich Felker	4820f9268d	fix and optimize non-default-type mutex behavior problem 1: mutex type from the attribute was being ignored by pthread_mutex_init, so recursive/errorchecking mutexes were never being used at all. problem 2: ownership of recursive mutexes was not being enforced at unlock time.	15 years ago
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.	15 years ago
Rich Felker	0b44a0315b	initial check-in, version 0.5.0	15 years ago

15 Commits (7fe58d3511387ab6c57909f6e4baef58acd6bd56)