qiurui
/
glibc
mirror of git://sourceware.org/git/glibc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
glibc/sysdeps/unix
History
Adhemerval Zanella c50e1c263e x86: Remove arch-specific low level lock implementation 
This patch removes the arch-specific x86 assembly implementation for
low level locking and consolidate both 64 bits and 32 bits in a
single implementation.

Different than other architectures, x86 lll_trylock, lll_lock, and
lll_unlock implements a single-thread optimization to avoid atomic
operation, using cmpxchgl instead.  This patch implements by using
the new single-thread.h definitions in a generic way, although using
the previous semantic.

The lll_cond_trylock, lll_cond_lock, and lll_timedlock just use
atomic operations plus calls to lll_lock_wait*.

For __lll_lock_wait_private and __lll_lock_wait the generic implemtation
there is no indication that assembly implementation is required
performance-wise.

Checked on x86_64-linux-gnu and i686-linux-gnu.

	* sysdeps/nptl/lowlevellock.h (__lll_trylock): New macro.
	(lll_trylock): Call __lll_trylock.
	* sysdeps/unix/sysv/linux/i386/libc-lowlevellock.S: Remove file.
	* sysdeps/unix/sysv/linux/i386/lll_timedlock_wait.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/libc-lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lll_timedlock_wait.c: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/x86/lowlevellock.h: New file.
	* sysdeps/unix/sysv/linux/x86_64/cancellation.S: Include
	lowlevellock-futex.h.
 		2019-05-14 08:48:02 -03:00
..
alpha Add more spaces before '('. 2019-02-28 15:02:09 +00:00
arm Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
bsd Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
i386 Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
inet Remove obsolete, never-implemented XSI STREAMS declarations 2019-03-14 15:44:15 +01:00
mips Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
powerpc Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
sh Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
sysv/linux x86: Remove arch-specific low level lock implementation 2019-05-14 08:48:02 -03:00
x86_64 Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
Implies
…
Makefile Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
clock_gettime.c nptl: Remove pthread_clock_gettime pthread_clock_settime 2019-03-22 15:37:43 -03:00
clock_nanosleep.c nptl: Remove pthread_clock_gettime pthread_clock_settime 2019-03-22 15:37:43 -03:00
clock_settime.c nptl: Remove pthread_clock_gettime pthread_clock_settime 2019-03-22 15:37:43 -03:00
confstr.h
…
get_child_max.c Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
getlogin.c Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
getlogin_r.c Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
getpagesize.c Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
grantpt.c Break more lines before not after operators. 2019-02-25 13:19:19 +00:00
ifreq.c Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
make-syscalls.sh make-syscalls.sh: fix comment referencing syscall-template 2019-01-31 22:45:10 -05:00
pt-fcntl.c Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
s-proto-cancel.S
…
s-proto.S
…
setxid.h
…
sockatmark.c Fix a few typos in comments 2019-01-12 13:44:51 +00:00
stime.c Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
syscall-template.S Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
syscall.S Update copyright dates with scripts/update-copyrights. 2019-01-01 00:11:28 +00:00
syscalls.list
…
sysdep.h Add single-thread.h header 2019-05-14 08:41:15 -03:00