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* sysdep/alpha/locks.h (read_barrier): New. 

From-SVN: r121774
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Richard Henderson 2007-02-09 12:40:56 -08:00 committed by Richard Henderson
parent 999ffb1a4b
commit 507a4fd4a0
2 changed files with 12 additions and 0 deletions
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4
libjava/ChangeLog
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@ -1,3 +1,7 @@
2007-02-09 Richard Henderson <rth@redhat.com>
* sysdep/alpha/locks.h (read_barrier): New.
2007-02-09 Keith Seitz <keiths@redhat.com>
* gnu/classpath/jdwp/VMVirtualMachine.java

8
libjava/sysdep/alpha/locks.h
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@ -50,6 +50,14 @@ compare_and_swap_release(volatile obj_addr_t *addr,
return compare_and_swap(addr, old, new_val);
}
// Ensure that subsequent instructions do not execute on stale
// data that was loaded from memory before the barrier.
inline static void
read_barrier()
{
__asm__ __volatile__("mb" : : : "memory");
}
// Ensure that prior stores to memory are completed with respect to other
// processors.
inline static void