Commit atomic operations file

Not currently used, but needed for some further changes

1 files changed, 291 insertions, 0 deletions

diff --git a/intern/atomic/atomic_ops.h b/intern/atomic/atomic_ops.h
new file mode 100644
index 00000000000..845e517a42f
--- /dev/null
+++ b/intern/atomic/atomic_ops.h
@@ -0,0 +1,291 @@
+/*
+ * Adopted from jemalloc with this license:
+ *
+ * Copyright (C) 2002-2013 Jason Evans <jasone@canonware.com>.
+ * All rights reserved.
+ * Copyright (C) 2007-2012 Mozilla Foundation.  All rights reserved.
+ * Copyright (C) 2009-2013 Facebook, Inc.  All rights reserved.
+
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice(s),
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice(s),
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ATOMIC_OPS_H__
+#define ATOMIC_OPS_H__
+
+/* needed for int types */
+#include "../../source/blender/blenlib/BLI_sys_types.h"
+
+/* little macro so inline keyword works */
+#if defined(_MSC_VER)
+#  define ATOMIC_INLINE static __forceinline
+#else
+#  if (defined(__APPLE__) && defined(__ppc__))
+/* static inline __attribute__ here breaks osx ppc gcc42 build */
+#    define ATOMIC_INLINE static __attribute__((always_inline))
+#  else
+#    define ATOMIC_INLINE static inline __attribute__((always_inline))
+#  endif
+#endif
+
+#if defined(_M_X64) || defined(__amd64__) || defined(__x86_64__)
+#  define LG_SIZEOF_PTR 3
+#  define LG_SIZEOF_INT 3
+#else
+#  define LG_SIZEOF_PTR 2
+#  define LG_SIZEOF_INT 2
+#endif
+
+/******************************************************************************/
+/* 64-bit operations. */
+#if (LG_SIZEOF_PTR == 3 || LG_SIZEOF_INT == 3)
+#  ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8
+ATOMIC_INLINE uint64_t
+atomic_add_uint64(uint64_t *p, uint64_t x)
+{
+	return (__sync_add_and_fetch(p, x));
+}
+
+ATOMIC_INLINE uint64_t
+atomic_sub_uint64(uint64_t *p, uint64_t x)
+{
+	return (__sync_sub_and_fetch(p, x));
+}
+#elif (defined(_MSC_VER))
+ATOMIC_INLINE uint64_t
+atomic_add_uint64(uint64_t *p, uint64_t x)
+{
+	return (InterlockedExchangeAdd64(p, x));
+}
+
+ATOMIC_INLINE uint64_t
+atomic_sub_uint64(uint64_t *p, uint64_t x)
+{
+	return (InterlockedExchangeAdd64(p, -((int64_t)x)));
+}
+#elif (defined(JEMALLOC_OSATOMIC))
+ATOMIC_INLINE uint64_t
+atomic_add_uint64(uint64_t *p, uint64_t x)
+{
+	return (OSAtomicAdd64((int64_t)x, (int64_t *)p));
+}
+
+ATOMIC_INLINE uint64_t
+atomic_sub_uint64(uint64_t *p, uint64_t x)
+{
+	return (OSAtomicAdd64(-((int64_t)x), (int64_t *)p));
+}
+#  elif (defined(__amd64__) || defined(__x86_64__))
+ATOMIC_INLINE uint64_t
+atomic_add_uint64(uint64_t *p, uint64_t x)
+{
+	asm volatile (
+	    "lock; xaddq %0, %1;"
+	    : "+r" (x), "=m" (*p) /* Outputs. */
+	    : "m" (*p) /* Inputs. */
+	    );
+	return (x);
+}
+
+ATOMIC_INLINE uint64_t
+atomic_sub_uint64(uint64_t *p, uint64_t x)
+{
+	x = (uint64_t)(-(int64_t)x);
+	asm volatile (
+	    "lock; xaddq %0, %1;"
+	    : "+r" (x), "=m" (*p) /* Outputs. */
+	    : "m" (*p) /* Inputs. */
+	    );
+	return (x);
+}
+#  elif (defined(JEMALLOC_ATOMIC9))
+ATOMIC_INLINE uint64_t
+atomic_add_uint64(uint64_t *p, uint64_t x)
+{
+	/*
+	 * atomic_fetchadd_64() doesn't exist, but we only ever use this
+	 * function on LP64 systems, so atomic_fetchadd_long() will do.
+	 */
+	assert(sizeof(uint64_t) == sizeof(unsigned long));
+
+	return (atomic_fetchadd_long(p, (unsigned long)x) + x);
+}
+
+ATOMIC_INLINE uint64_t
+atomic_sub_uint64(uint64_t *p, uint64_t x)
+{
+	assert(sizeof(uint64_t) == sizeof(unsigned long));
+
+	return (atomic_fetchadd_long(p, (unsigned long)(-(long)x)) - x);
+}
+#  elif (defined(JE_FORCE_SYNC_COMPARE_AND_SWAP_8))
+ATOMIC_INLINE uint64_t
+atomic_add_uint64(uint64_t *p, uint64_t x)
+{
+	return (__sync_add_and_fetch(p, x));
+}
+
+ATOMIC_INLINE uint64_t
+atomic_sub_uint64(uint64_t *p, uint64_t x)
+{
+	return (__sync_sub_and_fetch(p, x));
+}
+#  else
+#    error "Missing implementation for 64-bit atomic operations"
+#  endif
+#endif
+
+/******************************************************************************/
+/* 32-bit operations. */
+#ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
+ATOMIC_INLINE uint32_t
+atomic_add_uint32(uint32_t *p, uint32_t x)
+{
+	return (__sync_add_and_fetch(p, x));
+}
+
+ATOMIC_INLINE uint32_t
+atomic_sub_uint32(uint32_t *p, uint32_t x)
+{
+	return (__sync_sub_and_fetch(p, x));
+}
+#elif (defined(_MSC_VER))
+ATOMIC_INLINE uint32_t
+atomic_add_uint32(uint32_t *p, uint32_t x)
+{
+	return (InterlockedExchangeAdd(p, x));
+}
+
+ATOMIC_INLINE uint32_t
+atomic_sub_uint32(uint32_t *p, uint32_t x)
+{
+	return (InterlockedExchangeAdd(p, -((int32_t)x)));
+}
+#elif (defined(JEMALLOC_OSATOMIC))
+ATOMIC_INLINE uint32_t
+atomic_add_uint32(uint32_t *p, uint32_t x)
+{
+	return (OSAtomicAdd32((int32_t)x, (int32_t *)p));
+}
+
+ATOMIC_INLINE uint32_t
+atomic_sub_uint32(uint32_t *p, uint32_t x)
+{
+	return (OSAtomicAdd32(-((int32_t)x), (int32_t *)p));
+}
+#elif (defined(__i386__) || defined(__amd64__) || defined(__x86_64__))
+ATOMIC_INLINE uint32_t
+atomic_add_uint32(uint32_t *p, uint32_t x)
+{
+	asm volatile (
+	    "lock; xaddl %0, %1;"
+	    : "+r" (x), "=m" (*p) /* Outputs. */
+	    : "m" (*p) /* Inputs. */
+	    );
+	return (x);
+}
+
+ATOMIC_INLINE uint32_t
+atomic_sub_uint32(uint32_t *p, uint32_t x)
+{
+	x = (uint32_t)(-(int32_t)x);
+	asm volatile (
+	    "lock; xaddl %0, %1;"
+	    : "+r" (x), "=m" (*p) /* Outputs. */
+	    : "m" (*p) /* Inputs. */
+	    );
+	return (x);
+}
+#elif (defined(JEMALLOC_ATOMIC9))
+ATOMIC_INLINE uint32_t
+atomic_add_uint32(uint32_t *p, uint32_t x)
+{
+	return (atomic_fetchadd_32(p, x) + x);
+}
+
+ATOMIC_INLINE uint32_t
+atomic_sub_uint32(uint32_t *p, uint32_t x)
+{
+	return (atomic_fetchadd_32(p, (uint32_t)(-(int32_t)x)) - x);
+}
+#elif (defined(JE_FORCE_SYNC_COMPARE_AND_SWAP_4))
+ATOMIC_INLINE uint32_t
+atomic_add_uint32(uint32_t *p, uint32_t x)
+{
+	return (__sync_add_and_fetch(p, x));
+}
+
+ATOMIC_INLINE uint32_t
+atomic_sub_uint32(uint32_t *p, uint32_t x)
+{
+	return (__sync_sub_and_fetch(p, x));
+}
+#else
+#  error "Missing implementation for 32-bit atomic operations"
+#endif
+
+/******************************************************************************/
+/* size_t operations. */
+ATOMIC_INLINE size_t
+atomic_add_z(size_t *p, size_t x)
+{
+#if (LG_SIZEOF_PTR == 3)
+	return ((size_t)atomic_add_uint64((uint64_t *)p, (uint64_t)x));
+#elif (LG_SIZEOF_PTR == 2)
+	return ((size_t)atomic_add_uint32((uint32_t *)p, (uint32_t)x));
+#endif
+}
+
+ATOMIC_INLINE size_t
+atomic_sub_z(size_t *p, size_t x)
+{
+#if (LG_SIZEOF_PTR == 3)
+	return ((size_t)atomic_add_uint64((uint64_t *)p,
+	    (uint64_t)-((int64_t)x)));
+#elif (LG_SIZEOF_PTR == 2)
+	return ((size_t)atomic_add_uint32((uint32_t *)p,
+	    (uint32_t)-((int32_t)x)));
+#endif
+}
+
+/******************************************************************************/
+/* unsigned operations. */
+ATOMIC_INLINE unsigned
+atomic_add_u(unsigned *p, unsigned x)
+{
+#if (LG_SIZEOF_INT == 3)
+	return ((unsigned)atomic_add_uint64((uint64_t *)p, (uint64_t)x));
+#elif (LG_SIZEOF_INT == 2)
+	return ((unsigned)atomic_add_uint32((uint32_t *)p, (uint32_t)x));
+#endif
+}
+
+ATOMIC_INLINE unsigned
+atomic_sub_u(unsigned *p, unsigned x)
+{
+#if (LG_SIZEOF_INT == 3)
+	return ((unsigned)atomic_add_uint64((uint64_t *)p,
+	    (uint64_t)-((int64_t)x)));
+#elif (LG_SIZEOF_INT == 2)
+	return ((unsigned)atomic_add_uint32((uint32_t *)p,
+	    (uint32_t)-((int32_t)x)));
+#endif
+}
+
+#endif /* ATOMIC_OPS_H__ */