From 88499a87cef0a70f381524b9c4951b53bc5184e3 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Mon, 21 Nov 2016 17:26:35 -0200 Subject: posix: Consolidate Linux pause syscall This patch consolidates the pause Linux implementation on sysdeps/unix/sysv/linux/pause.c. If defined the pause syscall (__NR_pause) will be used, other ppoll with 0 arguments will be used instead. It has the small advantage of generic pause implementation with uses rt_sigprocmask plus rt_sigsuspend because it requires only one syscall and the pause is done atomically regarding signal handling (for instance, pause may not be interrupted if the signal arrives between the rt_sigprocmask and rt_sigsuspend syscall). Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32, arch64-linux-gnu, arm-linux-gnueabihf, powerpc64le-linux-gnu, sparc64-linux-gnu, and sparcv9-linux-gnu. * sysdeps/unix/sysv/linux/generic/pause.c: Remove file. * sysdeps/unix/sysv/linux/sparc/sparc64/pause.c: Likewise. * sysdeps/unix/sysv/linux/sparc/kernel-features.h [__arch64__] (__NR_pause): Undefine. * sysdeps/unix/sysv/linux/pause.c: New file. * sysdeps/unix/sysv/linux/syscalls.list: Remove pause from auto-generation list. --- posix/Makefile | 1 - 1 file changed, 1 deletion(-) (limited to 'posix/Makefile') diff --git a/posix/Makefile b/posix/Makefile index 0025d8af53..a78ca3dd71 100644 --- a/posix/Makefile +++ b/posix/Makefile @@ -221,7 +221,6 @@ CFLAGS-spawnp.c = -fexceptions CFLAGS-spawnp.os = -fomit-frame-pointer CFLAGS-spawni.c = -fexceptions CFLAGS-spawni.os = -fomit-frame-pointer -CFLAGS-pause.c = -fexceptions CFLAGS-glob.c = $(uses-callbacks) -fexceptions CFLAGS-glob64.c = $(uses-callbacks) -fexceptions CFLAGS-getconf.c = -DGETCONF_DIR='"$(libexecdir)/getconf"' -- cgit 1.4.1