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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2016-11-21 17:26:35 -0200
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2017-05-18 18:06:47 -0300
commit88499a87cef0a70f381524b9c4951b53bc5184e3 (patch)
treeb9a4033cd8da062f69f9235c15f58ee32d1b0f14 /posix
parenta7fbedff76494b5b694f647e9c681cf8988056ce (diff)
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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.
Diffstat (limited to 'posix')
-rw-r--r--posix/Makefile1
1 files changed, 0 insertions, 1 deletions
diff --git a/posix/Makefile b/posix/Makefile
index 0025d8a..a78ca3d 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"'