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

Author	SHA1	Message	Date
Rich Felker	ca52e34767	avoid setting FILE lock count when not using flockfile for now this is just a tiny optimization, but later if we support cancellation from __stdio_read and __stdio_write, it will be necessary for the recusrive lock count to be zero in order for these functions to know they are responsible for unlocking the FILE on cancellation.	15 years ago
Rich Felker	dba68bf98f	add proper fuxed-based locking for stdio previously, stdio used spinlocks, which would be unacceptable if we ever add support for thread priorities, and which yielded pathologically bad performance if an application attempted to use flockfile on a key file as a major/primary locking mechanism. i had held off on making this change for fear that it would hurt performance in the non-threaded case, but actually support for recursive locking had already inflicted that cost. by having the internal locking functions store a flag indicating whether they need to perform unlocking, rather than using the actual recursive lock counter, i was able to combine the conditionals at unlock time, eliminating any additional cost, and also avoid a nasty corner case where a huge number of calls to ftrylockfile could cause deadlock later at the point of internal locking. this commit also fixes some issues with usage of pthread_self conflicting with __attribute__((const)) which resulted in crashes with some compiler versions/optimizations, mainly in flockfile prior to pthread_create.	15 years ago
Rich Felker	77f15d108e	reduce some ridiculously large spin counts these should be tweaked according to testing. offhand i know 1000 is too low and 5000 is likely to be sufficiently high. consider trying to add futexes to file locking, too...	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	4106cdcd2d	revert some more spin optimizations that turned out to be pessimizations	15 years ago
Rich Felker	a37452430f	simplify and optimize FILE lock handling	15 years ago
Rich Felker	aa398f56fa	global cleanup to use the new syscall interface	15 years ago
Rich Felker	5eb0d33ec0	implement flockfile api, rework stdio locking	15 years ago