| Commit message (Collapse) | Author | Age | Files | Lines | |
|---|---|---|---|---|---|
| * | make internal declarations for flockfile tracking functions checkable | Rich Felker | 2018-09-12 | 1 | -2/+0 |
| | | | | | | | | logically these belong to the intersection of the stdio and pthread subsystems, and either place the declarations could go (stdio_impl.h or pthread_impl.h) requires a forward declaration for one of the argument types. | ||||
| * | refactor flockfile not to duplicate lock mechanism logic | Rich Felker | 2018-04-18 | 1 | -7/+4 |
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| * | fix stdio lock dependency on read-after-free not faulting | Rich Felker | 2018-04-18 | 1 | -1/+5 |
| | | | | | | | | instead of using a waiters count, add a bit to the lock field indicating that the lock may have waiters. threads which obtain the lock after contending for it will perform a potentially-spurious wake when they release the lock. | ||||
| * | add proper fuxed-based locking for stdio | Rich Felker | 2011-07-30 | 1 | -2/+4 |
| | | | | | | | | | | | | | | | | | | | | | | | 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. | ||||
| * | clean up handling of thread/nothread mode, locking | Rich Felker | 2011-04-17 | 1 | -4/+1 |
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| * | optimize file locking: avoid cache-polluting writes to global storage | Rich Felker | 2011-03-16 | 1 | -2/+4 |
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| * | implement flockfile api, rework stdio locking | Rich Felker | 2011-03-12 | 1 | -0/+9 |
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| mirror of git://git.musl-libc.org/musl | Leah Neukirchen |
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