Searched hist:89969 (Results 1 - 3 of 3) sorted by relevance
| /freebsd-11.0-release/sys/sys/ | ||
| H A D | filedesc.h | diff 89969 Tue Jan 29 22:54:19 MST 2002 alfred Attempt to fixup select(2) and poll(2), this should fix some races with other threads as well as speed up the interfaces. To fix the race and accomplish the speedup, remove selholddrop and pollholddrop. The entire concept is somewhat bogus because holding the individual struct file pointers offers us no guarantees that another thread context won't close it on us thereby removing our access to our own reference. Selholddrop and pollholddrop also would do multiple locks and unlocks of mutexes _per-file_ in the fd arrays to be scanned, this needed to be sped up. Instead of using selholddrop and pollholddrop, simply hold the filedesc lock over the selscan and pollscan functions. This should protect us against close(2)'s on the files as reduce the multiple lock/unlock pairs per fd into a single lock over the filedesc. |
| /freebsd-11.0-release/sys/kern/ | ||
| H A D | sys_generic.c | diff 89969 Tue Jan 29 22:54:19 MST 2002 alfred Attempt to fixup select(2) and poll(2), this should fix some races with other threads as well as speed up the interfaces. To fix the race and accomplish the speedup, remove selholddrop and pollholddrop. The entire concept is somewhat bogus because holding the individual struct file pointers offers us no guarantees that another thread context won't close it on us thereby removing our access to our own reference. Selholddrop and pollholddrop also would do multiple locks and unlocks of mutexes _per-file_ in the fd arrays to be scanned, this needed to be sped up. Instead of using selholddrop and pollholddrop, simply hold the filedesc lock over the selscan and pollscan functions. This should protect us against close(2)'s on the files as reduce the multiple lock/unlock pairs per fd into a single lock over the filedesc. |
| H A D | kern_descrip.c | diff 89969 Tue Jan 29 22:54:19 MST 2002 alfred Attempt to fixup select(2) and poll(2), this should fix some races with other threads as well as speed up the interfaces. To fix the race and accomplish the speedup, remove selholddrop and pollholddrop. The entire concept is somewhat bogus because holding the individual struct file pointers offers us no guarantees that another thread context won't close it on us thereby removing our access to our own reference. Selholddrop and pollholddrop also would do multiple locks and unlocks of mutexes _per-file_ in the fd arrays to be scanned, this needed to be sped up. Instead of using selholddrop and pollholddrop, simply hold the filedesc lock over the selscan and pollscan functions. This should protect us against close(2)'s on the files as reduce the multiple lock/unlock pairs per fd into a single lock over the filedesc. |
Completed in 175 milliseconds