path: root/src/signal/sigprocmask.c
AgeCommit message (Collapse)AuthorLines
2012-09-06use restrict everywhere it's required by c99 and/or posix 2008Rich Felker-1/+1
to deal with the fact that the public headers may be used with pre-c99 compilers, __restrict is used in place of restrict, and defined appropriately for any supported compiler. we also avoid the form [restrict] since older versions of gcc rejected it due to a bug in the original c99 standard, and instead use the form *restrict.
2011-07-30clean up pthread_sigmask/sigprocmask dependency orderRich Felker-8/+4
it's nicer for the function that doesn't use errno to be independent, and have the other one call it. saves some time and avoids clobbering errno.
2011-05-07overhaul implementation-internal signal protectionsRich Felker-18/+2
the new approach relies on the fact that the only ways to create sigset_t objects without invoking UB are to use the sig*set() functions, or from the masks returned by sigprocmask, sigaction, etc. or in the ucontext_t argument to a signal handler. thus, as long as sigfillset and sigaddset avoid adding the "protected" signals, there is no way the application will ever obtain a sigset_t including these bits, and thus no need to add the overhead of checking/clearing them when sigprocmask or sigaction is called. note that the old code actually *failed* to remove the bits from sa_mask when sigaction was called. the new implementations are also significantly smaller, simpler, and faster due to ignoring the useless "GNU HURD signals" 65-1024, which are not used and, if there's any sanity in the world, never will be used.
2011-04-14use a separate signal from SIGCANCEL for SIGEV_THREAD timersRich Felker-0/+1
otherwise we cannot support an application's desire to use asynchronous cancellation within the callback function. this change also slightly debloats pthread_create.c.
2011-03-20global cleanup to use the new syscall interfaceRich Felker-1/+1
2011-03-09fix error handling for pthread_sigmaskRich Felker-1/+5
it must return errno, not -1, and should reject invalud values for how.
2011-02-20fix null pointer dereference introduced in last sigprocmask commitRich Felker-1/+1
2011-02-19prevent sigprocmask/pthread_sigmask from blocking implementation signalsRich Felker-3/+5
this code was wrongly disabled because the old version was trying to be too clever and didn't work. replaced it with a simple version for now.
2011-02-12initial check-in, version 0.5.0v0.5.0Rich Felker-0/+23