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path: root/src/thread/pthread_kill.c
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2012-07-12fix several locks that weren't updated right for new futex-based __lockRich Felker1-2/+2
these could have caused memory corruption due to invalid accesses to the next field. all should be fixed now; I found the errors with fgrep -r '__lock(&', which is bogus since the argument should be an array.
2012-07-12fix pthread_kill unlockingRich Felker1-1/+1
it had not been updated for the futex-based locks
2011-06-14fix race condition in pthread_killRich Felker1-1/+5
if thread id was reused by the kernel between the time pthread_kill read it from the userspace pthread_t object and the time of the tgkill syscall, a signal could be sent to the wrong thread. the tgkill syscall was supposed to prevent this race (versus the old tkill syscall) but it can't; it can only help in the case where the tid is reused in a different process, but not when the tid is reused in the same process. the only solution i can see is an extra lock to prevent threads from exiting while another thread is trying to pthread_kill them. it should be very very cheap in the non-contended case.
2011-04-06consistency: change all remaining syscalls to use SYS_ rather than __NR_ prefixRich Felker1-1/+1
2011-03-19if returning errno value directly from a syscall, we need to negate it.Rich Felker1-1/+1
2011-03-19syscall overhaul part two - unify public and internal syscall interfaceRich Felker1-2/+1
with this patch, the syscallN() functions are no longer needed; a variadic syscall() macro allows syscalls with anywhere from 0 to 6 arguments to be made with a single macro name. also, manually casting each non-integer argument with (long) is no longer necessary; the casts are hidden in the macros. some source files which depended on being able to define the old macro SYSCALL_RETURNS_ERRNO have been modified to directly use __syscall() instead of syscall(). references to SYSCALL_SIGSET_SIZE and SYSCALL_LL have also been changed. x86_64 has not been tested, and may need a follow-up commit to fix any minor bugs/oversights.
2011-02-12initial check-in, version 0.5.0v0.5.0Rich Felker1-0/+7