diff options
| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2016-11-21 17:26:35 -0200 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2017-05-18 18:06:47 -0300 |
| commit | 88499a87cef0a70f381524b9c4951b53bc5184e3 (patch) | |
| tree | b9a4033cd8da062f69f9235c15f58ee32d1b0f14 /posix | |
| parent | a7fbedff76494b5b694f647e9c681cf8988056ce (diff) | |
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/Makefile | 1 |
1 files changed, 0 insertions, 1 deletions
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"' |