summaryrefslogtreecommitdiffstatshomepage
path: root/3rdparty/libuv/src/unix/atomic-ops.h
diff options
context:
space:
mode:
Diffstat (limited to '3rdparty/libuv/src/unix/atomic-ops.h')
-rw-r--r--3rdparty/libuv/src/unix/atomic-ops.h77
1 files changed, 0 insertions, 77 deletions
diff --git a/3rdparty/libuv/src/unix/atomic-ops.h b/3rdparty/libuv/src/unix/atomic-ops.h
deleted file mode 100644
index 84e471838be..00000000000
--- a/3rdparty/libuv/src/unix/atomic-ops.h
+++ /dev/null
@@ -1,77 +0,0 @@
-/* Copyright (c) 2013, Ben Noordhuis <info@bnoordhuis.nl>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#ifndef UV_ATOMIC_OPS_H_
-#define UV_ATOMIC_OPS_H_
-
-#include "internal.h" /* UV_UNUSED */
-
-#if defined(__SUNPRO_C) || defined(__SUNPRO_CC)
-#include <atomic.h>
-#define __sync_val_compare_and_swap(p, o, n) atomic_cas_ptr(p, o, n)
-#endif
-
-UV_UNUSED(static int cmpxchgi(int* ptr, int oldval, int newval));
-UV_UNUSED(static long cmpxchgl(long* ptr, long oldval, long newval));
-UV_UNUSED(static void cpu_relax(void));
-
-/* Prefer hand-rolled assembly over the gcc builtins because the latter also
- * issue full memory barriers.
- */
-UV_UNUSED(static int cmpxchgi(int* ptr, int oldval, int newval)) {
-#if defined(__i386__) || defined(__x86_64__)
- int out;
- __asm__ __volatile__ ("lock; cmpxchg %2, %1;"
- : "=a" (out), "+m" (*(volatile int*) ptr)
- : "r" (newval), "0" (oldval)
- : "memory");
- return out;
-#elif defined(_AIX) && defined(__xlC__)
- const int out = (*(volatile int*) ptr);
- __compare_and_swap(ptr, &oldval, newval);
- return out;
-#else
- return __sync_val_compare_and_swap(ptr, oldval, newval);
-#endif
-}
-
-UV_UNUSED(static long cmpxchgl(long* ptr, long oldval, long newval)) {
-#if defined(__i386__) || defined(__x86_64__)
- long out;
- __asm__ __volatile__ ("lock; cmpxchg %2, %1;"
- : "=a" (out), "+m" (*(volatile long*) ptr)
- : "r" (newval), "0" (oldval)
- : "memory");
- return out;
-#elif defined(_AIX) && defined(__xlC__)
- const long out = (*(volatile int*) ptr);
-# if defined(__64BIT__)
- __compare_and_swaplp(ptr, &oldval, newval);
-# else
- __compare_and_swap(ptr, &oldval, newval);
-# endif /* if defined(__64BIT__) */
- return out;
-#else
- return __sync_val_compare_and_swap(ptr, oldval, newval);
-#endif
-}
-
-UV_UNUSED(static void cpu_relax(void)) {
-#if defined(__i386__) || defined(__x86_64__)
- __asm__ __volatile__ ("rep; nop"); /* a.k.a. PAUSE */
-#endif
-}
-
-#endif /* UV_ATOMIC_OPS_H_ */