mirror/glibc
2
0
Fork 0
mirror of git://sourceware.org/git/glibc.git synced 2025-01-18 12:16:13 +08:00
Code Issues Packages Projects Releases Wiki Activity

Update.

Browse Source 
2002-03-22  Ulrich Drepper  <drepper@redhat.com>

	* internals.h (MEMORY_BARRIER): Define as asm with memory as clobber.
This commit is contained in:
Ulrich Drepper 2002-03-22 08:29:10 +00:00
parent c7a9b6e2d3
commit 32fe4a9320
2 changed files with 10 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
linuxthreads/ChangeLog
View File

@ -1,3 +1,7 @@
2002-03-22 Ulrich Drepper <drepper@redhat.com>
* internals.h (MEMORY_BARRIER): Define as asm with memory as clobber.
2002-03-17 Andreas Jaeger <aj@suse.de> 2002-03-17 Andreas Jaeger <aj@suse.de>
* sysdeps/i386/pt-machine.h: Add testandset and __compare_and_swap * sysdeps/i386/pt-machine.h: Add testandset and __compare_and_swap

10
linuxthreads/internals.h
View File

@ -193,12 +193,14 @@ static inline int nonexisting_handle(pthread_handle h, pthread_t id)
#define THREAD_STACK_START_ADDRESS __pthread_initial_thread_bos #define THREAD_STACK_START_ADDRESS __pthread_initial_thread_bos
#endif #endif
/* If MEMORY_BARRIER isn't defined in pt-machine.h, assume the architecture /* If MEMORY_BARRIER isn't defined in pt-machine.h, assume the
doesn't need a memory barrier instruction (e.g. Intel x86). Some architecture doesn't need a memory barrier instruction (e.g. Intel
architectures distinguish between full, read and write barriers. */ x86). Still we need the compiler to respect the barrier and emit
all outstanding operations which modify memory. Some architectures
distinguish between full, read and write barriers. */
#ifndef MEMORY_BARRIER #ifndef MEMORY_BARRIER
#define MEMORY_BARRIER() #define MEMORY_BARRIER() asm ("" : : : "memory")
#endif #endif
#ifndef READ_MEMORY_BARRIER #ifndef READ_MEMORY_BARRIER
#define READ_MEMORY_BARRIER() MEMORY_BARRIER() #define READ_MEMORY_BARRIER() MEMORY_BARRIER()