From 8b0e795aaa445e9167aa07b282c5720b35342c07 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Wed, 1 Nov 2017 11:49:05 -0200 Subject: Simplify Linux sig{timed}wait{info} implementations This patch simplifies sig{timed}wait{info} by: - Assuming __NR_rt_sigtimedwait existence on all architectures due minimum kernel version requirement (it pre-dates Linux git inclusion for Linux 2.6.12). - Call __sigtimedwait on both sigwait and sigwaitinfo. - Now that sigwait is based on an internal sigtimedwait call and it is present of both libc.so and libpthread.so we need to add an external private definition of __sigtimedwait for libpthread.so call. Checked on x86_64-linux-gnu. * sysdeps/unix/sysv/linux/Versions (libc) [GLIBC_PRIVATE]: Add __sigtimedwait. * sysdeps/unix/sysv/linux/sigtimedwait.c: Simplify includes and assume __NR_rt_sigtimedwait. * sysdeps/unix/sysv/linux/sigwait.c (__sigwait): Call __sigtimedwait and add LIBC_CANCEL_HANDLED for cancellation marking. * sysdeps/unix/sysv/linux/sigwaitinfo.c (__sigwaitinfo): Likewise. Signed-off-by: Adhemerval Zanella Reviewed-by: Zack Weinberg --- sysdeps/unix/sysv/linux/Versions | 1 + 1 file changed, 1 insertion(+) (limited to 'sysdeps/unix/sysv/linux/Versions') diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions index 6c9e06f..d3dbcde 100644 --- a/sysdeps/unix/sysv/linux/Versions +++ b/sysdeps/unix/sysv/linux/Versions @@ -172,6 +172,7 @@ libc { __open_nocancel; __read_nocancel; __close_nocancel; + __sigtimedwait; # functions used by nscd __netlink_assert_response; } -- cgit v1.1