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-rw-r--r--mesalib/src/gallium/auxiliary/util/u_atomic.h701
1 files changed, 349 insertions, 352 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_atomic.h b/mesalib/src/gallium/auxiliary/util/u_atomic.h
index e8c0fdf75..2f2b42b34 100644
--- a/mesalib/src/gallium/auxiliary/util/u_atomic.h
+++ b/mesalib/src/gallium/auxiliary/util/u_atomic.h
@@ -1,352 +1,349 @@
-/**
- * Many similar implementations exist. See for example libwsbm
- * or the linux kernel include/atomic.h
- *
- * No copyright claimed on this file.
- *
- */
-
-#ifndef U_ATOMIC_H
-#define U_ATOMIC_H
-
-#include "pipe/p_compiler.h"
-#include "pipe/p_defines.h"
-
-/* Favor OS-provided implementations.
- *
- * Where no OS-provided implementation is available, fall back to
- * locally coded assembly, compiler intrinsic or ultimately a
- * mutex-based implementation.
- */
-#if (defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY) || \
- defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT))
-#define PIPE_ATOMIC_OS_UNLOCKED
-#elif defined(PIPE_OS_SOLARIS)
-#define PIPE_ATOMIC_OS_SOLARIS
-#elif defined(PIPE_CC_MSVC)
-#define PIPE_ATOMIC_MSVC_INTRINSIC
-#elif (defined(PIPE_CC_MSVC) && defined(PIPE_ARCH_X86))
-#define PIPE_ATOMIC_ASM_MSVC_X86
-#elif (defined(PIPE_CC_GCC) && defined(PIPE_ARCH_X86))
-#define PIPE_ATOMIC_ASM_GCC_X86
-#elif (defined(PIPE_CC_GCC) && defined(PIPE_ARCH_X86_64))
-#define PIPE_ATOMIC_ASM_GCC_X86_64
-#elif defined(PIPE_CC_GCC) && (PIPE_CC_GCC_VERSION >= 401)
-#define PIPE_ATOMIC_GCC_INTRINSIC
-#else
-#error "Unsupported platform"
-#endif
-
-
-#if defined(PIPE_ATOMIC_ASM_GCC_X86_64)
-#define PIPE_ATOMIC "GCC x86_64 assembly"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define p_atomic_set(_v, _i) (*(_v) = (_i))
-#define p_atomic_read(_v) (*(_v))
-
-static INLINE boolean
-p_atomic_dec_zero(int32_t *v)
-{
- unsigned char c;
-
- __asm__ __volatile__("lock; decl %0; sete %1":"+m"(*v), "=qm"(c)
- ::"memory");
-
- return c != 0;
-}
-
-static INLINE void
-p_atomic_inc(int32_t *v)
-{
- __asm__ __volatile__("lock; incl %0":"+m"(*v));
-}
-
-static INLINE void
-p_atomic_dec(int32_t *v)
-{
- __asm__ __volatile__("lock; decl %0":"+m"(*v));
-}
-
-static INLINE int32_t
-p_atomic_cmpxchg(int32_t *v, int32_t old, int32_t _new)
-{
- return __sync_val_compare_and_swap(v, old, _new);
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* PIPE_ATOMIC_ASM_GCC_X86_64 */
-
-
-#if defined(PIPE_ATOMIC_ASM_GCC_X86)
-
-#define PIPE_ATOMIC "GCC x86 assembly"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define p_atomic_set(_v, _i) (*(_v) = (_i))
-#define p_atomic_read(_v) (*(_v))
-
-static INLINE boolean
-p_atomic_dec_zero(int32_t *v)
-{
- unsigned char c;
-
- __asm__ __volatile__("lock; decl %0; sete %1":"+m"(*v), "=qm"(c)
- ::"memory");
-
- return c != 0;
-}
-
-static INLINE void
-p_atomic_inc(int32_t *v)
-{
- __asm__ __volatile__("lock; incl %0":"+m"(*v));
-}
-
-static INLINE void
-p_atomic_dec(int32_t *v)
-{
- __asm__ __volatile__("lock; decl %0":"+m"(*v));
-}
-
-static INLINE int32_t
-p_atomic_cmpxchg(int32_t *v, int32_t old, int32_t _new)
-{
- return __sync_val_compare_and_swap(v, old, _new);
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-
-
-/* Implementation using GCC-provided synchronization intrinsics
- */
-#if defined(PIPE_ATOMIC_GCC_INTRINSIC)
-
-#define PIPE_ATOMIC "GCC Sync Intrinsics"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define p_atomic_set(_v, _i) (*(_v) = (_i))
-#define p_atomic_read(_v) (*(_v))
-
-static INLINE boolean
-p_atomic_dec_zero(int32_t *v)
-{
- return (__sync_sub_and_fetch(v, 1) == 0);
-}
-
-static INLINE void
-p_atomic_inc(int32_t *v)
-{
- (void) __sync_add_and_fetch(v, 1);
-}
-
-static INLINE void
-p_atomic_dec(int32_t *v)
-{
- (void) __sync_sub_and_fetch(v, 1);
-}
-
-static INLINE int32_t
-p_atomic_cmpxchg(int32_t *v, int32_t old, int32_t _new)
-{
- return __sync_val_compare_and_swap(v, old, _new);
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-
-
-/* Unlocked version for single threaded environments, such as some
- * windows kernel modules.
- */
-#if defined(PIPE_ATOMIC_OS_UNLOCKED)
-
-#define PIPE_ATOMIC "Unlocked"
-
-#define p_atomic_set(_v, _i) (*(_v) = (_i))
-#define p_atomic_read(_v) (*(_v))
-#define p_atomic_dec_zero(_v) ((boolean) --(*(_v)))
-#define p_atomic_inc(_v) ((void) (*(_v))++)
-#define p_atomic_dec(_v) ((void) (*(_v))--)
-#define p_atomic_cmpxchg(_v, old, _new) (*(_v) == old ? *(_v) = (_new) : *(_v))
-
-#endif
-
-
-/* Locally coded assembly for MSVC on x86:
- */
-#if defined(PIPE_ATOMIC_ASM_MSVC_X86)
-
-#define PIPE_ATOMIC "MSVC x86 assembly"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define p_atomic_set(_v, _i) (*(_v) = (_i))
-#define p_atomic_read(_v) (*(_v))
-
-static INLINE boolean
-p_atomic_dec_zero(int32_t *v)
-{
- unsigned char c;
-
- __asm {
- mov eax, [v]
- lock dec dword ptr [eax]
- sete byte ptr [c]
- }
-
- return c != 0;
-}
-
-static INLINE void
-p_atomic_inc(int32_t *v)
-{
- __asm {
- mov eax, [v]
- lock inc dword ptr [eax]
- }
-}
-
-static INLINE void
-p_atomic_dec(int32_t *v)
-{
- __asm {
- mov eax, [v]
- lock dec dword ptr [eax]
- }
-}
-
-static INLINE int32_t
-p_atomic_cmpxchg(int32_t *v, int32_t old, int32_t _new)
-{
- int32_t orig;
-
- __asm {
- mov ecx, [v]
- mov eax, [old]
- mov edx, [_new]
- lock cmpxchg [ecx], edx
- mov [orig], eax
- }
-
- return orig;
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-
-#if defined(PIPE_ATOMIC_MSVC_INTRINSIC)
-
-#define PIPE_ATOMIC "MSVC Intrinsics"
-
-#include <intrin.h>
-
-#pragma intrinsic(_InterlockedIncrement)
-#pragma intrinsic(_InterlockedDecrement)
-#pragma intrinsic(_InterlockedCompareExchange)
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define p_atomic_set(_v, _i) (*(_v) = (_i))
-#define p_atomic_read(_v) (*(_v))
-
-static INLINE boolean
-p_atomic_dec_zero(int32_t *v)
-{
- return _InterlockedDecrement((long *)v) == 0;
-}
-
-static INLINE void
-p_atomic_inc(int32_t *v)
-{
- _InterlockedIncrement((long *)v);
-}
-
-static INLINE void
-p_atomic_dec(int32_t *v)
-{
- _InterlockedDecrement((long *)v);
-}
-
-static INLINE int32_t
-p_atomic_cmpxchg(int32_t *v, int32_t old, int32_t _new)
-{
- return _InterlockedCompareExchange((long *)v, _new, old);
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-#if defined(PIPE_ATOMIC_OS_SOLARIS)
-
-#define PIPE_ATOMIC "Solaris OS atomic functions"
-
-#include <atomic.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define p_atomic_set(_v, _i) (*(_v) = (_i))
-#define p_atomic_read(_v) (*(_v))
-
-static INLINE boolean
-p_atomic_dec_zero(int32_t *v)
-{
- uint32_t n = atomic_dec_32_nv((uint32_t *) v);
-
- return n != 0;
-}
-
-#define p_atomic_inc(_v) atomic_inc_32((uint32_t *) _v)
-#define p_atomic_dec(_v) atomic_dec_32((uint32_t *) _v)
-
-#define p_atomic_cmpxchg(_v, _old, _new) \
- atomic_cas_32( (uint32_t *) _v, (uint32_t) _old, (uint32_t) _new)
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
-
-#ifndef PIPE_ATOMIC
-#error "No pipe_atomic implementation selected"
-#endif
-
-
-
-#endif /* U_ATOMIC_H */
+/**
+ * Many similar implementations exist. See for example libwsbm
+ * or the linux kernel include/atomic.h
+ *
+ * No copyright claimed on this file.
+ *
+ */
+
+#ifndef U_ATOMIC_H
+#define U_ATOMIC_H
+
+#include "pipe/p_compiler.h"
+#include "pipe/p_defines.h"
+
+/* Favor OS-provided implementations.
+ *
+ * Where no OS-provided implementation is available, fall back to
+ * locally coded assembly, compiler intrinsic or ultimately a
+ * mutex-based implementation.
+ */
+#if defined(PIPE_OS_SOLARIS)
+#define PIPE_ATOMIC_OS_SOLARIS
+#elif defined(PIPE_CC_MSVC)
+#define PIPE_ATOMIC_MSVC_INTRINSIC
+#elif (defined(PIPE_CC_MSVC) && defined(PIPE_ARCH_X86))
+#define PIPE_ATOMIC_ASM_MSVC_X86
+#elif (defined(PIPE_CC_GCC) && defined(PIPE_ARCH_X86))
+#define PIPE_ATOMIC_ASM_GCC_X86
+#elif (defined(PIPE_CC_GCC) && defined(PIPE_ARCH_X86_64))
+#define PIPE_ATOMIC_ASM_GCC_X86_64
+#elif defined(PIPE_CC_GCC) && (PIPE_CC_GCC_VERSION >= 401)
+#define PIPE_ATOMIC_GCC_INTRINSIC
+#else
+#error "Unsupported platform"
+#endif
+
+
+#if defined(PIPE_ATOMIC_ASM_GCC_X86_64)
+#define PIPE_ATOMIC "GCC x86_64 assembly"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define p_atomic_set(_v, _i) (*(_v) = (_i))
+#define p_atomic_read(_v) (*(_v))
+
+static INLINE boolean
+p_atomic_dec_zero(int32_t *v)
+{
+ unsigned char c;
+
+ __asm__ __volatile__("lock; decl %0; sete %1":"+m"(*v), "=qm"(c)
+ ::"memory");
+
+ return c != 0;
+}
+
+static INLINE void
+p_atomic_inc(int32_t *v)
+{
+ __asm__ __volatile__("lock; incl %0":"+m"(*v));
+}
+
+static INLINE void
+p_atomic_dec(int32_t *v)
+{
+ __asm__ __volatile__("lock; decl %0":"+m"(*v));
+}
+
+static INLINE int32_t
+p_atomic_cmpxchg(int32_t *v, int32_t old, int32_t _new)
+{
+ return __sync_val_compare_and_swap(v, old, _new);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PIPE_ATOMIC_ASM_GCC_X86_64 */
+
+
+#if defined(PIPE_ATOMIC_ASM_GCC_X86)
+
+#define PIPE_ATOMIC "GCC x86 assembly"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define p_atomic_set(_v, _i) (*(_v) = (_i))
+#define p_atomic_read(_v) (*(_v))
+
+static INLINE boolean
+p_atomic_dec_zero(int32_t *v)
+{
+ unsigned char c;
+
+ __asm__ __volatile__("lock; decl %0; sete %1":"+m"(*v), "=qm"(c)
+ ::"memory");
+
+ return c != 0;
+}
+
+static INLINE void
+p_atomic_inc(int32_t *v)
+{
+ __asm__ __volatile__("lock; incl %0":"+m"(*v));
+}
+
+static INLINE void
+p_atomic_dec(int32_t *v)
+{
+ __asm__ __volatile__("lock; decl %0":"+m"(*v));
+}
+
+static INLINE int32_t
+p_atomic_cmpxchg(int32_t *v, int32_t old, int32_t _new)
+{
+ return __sync_val_compare_and_swap(v, old, _new);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+
+
+/* Implementation using GCC-provided synchronization intrinsics
+ */
+#if defined(PIPE_ATOMIC_GCC_INTRINSIC)
+
+#define PIPE_ATOMIC "GCC Sync Intrinsics"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define p_atomic_set(_v, _i) (*(_v) = (_i))
+#define p_atomic_read(_v) (*(_v))
+
+static INLINE boolean
+p_atomic_dec_zero(int32_t *v)
+{
+ return (__sync_sub_and_fetch(v, 1) == 0);
+}
+
+static INLINE void
+p_atomic_inc(int32_t *v)
+{
+ (void) __sync_add_and_fetch(v, 1);
+}
+
+static INLINE void
+p_atomic_dec(int32_t *v)
+{
+ (void) __sync_sub_and_fetch(v, 1);
+}
+
+static INLINE int32_t
+p_atomic_cmpxchg(int32_t *v, int32_t old, int32_t _new)
+{
+ return __sync_val_compare_and_swap(v, old, _new);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+
+
+/* Unlocked version for single threaded environments, such as some
+ * windows kernel modules.
+ */
+#if defined(PIPE_ATOMIC_OS_UNLOCKED)
+
+#define PIPE_ATOMIC "Unlocked"
+
+#define p_atomic_set(_v, _i) (*(_v) = (_i))
+#define p_atomic_read(_v) (*(_v))
+#define p_atomic_dec_zero(_v) ((boolean) --(*(_v)))
+#define p_atomic_inc(_v) ((void) (*(_v))++)
+#define p_atomic_dec(_v) ((void) (*(_v))--)
+#define p_atomic_cmpxchg(_v, old, _new) (*(_v) == old ? *(_v) = (_new) : *(_v))
+
+#endif
+
+
+/* Locally coded assembly for MSVC on x86:
+ */
+#if defined(PIPE_ATOMIC_ASM_MSVC_X86)
+
+#define PIPE_ATOMIC "MSVC x86 assembly"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define p_atomic_set(_v, _i) (*(_v) = (_i))
+#define p_atomic_read(_v) (*(_v))
+
+static INLINE boolean
+p_atomic_dec_zero(int32_t *v)
+{
+ unsigned char c;
+
+ __asm {
+ mov eax, [v]
+ lock dec dword ptr [eax]
+ sete byte ptr [c]
+ }
+
+ return c != 0;
+}
+
+static INLINE void
+p_atomic_inc(int32_t *v)
+{
+ __asm {
+ mov eax, [v]
+ lock inc dword ptr [eax]
+ }
+}
+
+static INLINE void
+p_atomic_dec(int32_t *v)
+{
+ __asm {
+ mov eax, [v]
+ lock dec dword ptr [eax]
+ }
+}
+
+static INLINE int32_t
+p_atomic_cmpxchg(int32_t *v, int32_t old, int32_t _new)
+{
+ int32_t orig;
+
+ __asm {
+ mov ecx, [v]
+ mov eax, [old]
+ mov edx, [_new]
+ lock cmpxchg [ecx], edx
+ mov [orig], eax
+ }
+
+ return orig;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+
+#if defined(PIPE_ATOMIC_MSVC_INTRINSIC)
+
+#define PIPE_ATOMIC "MSVC Intrinsics"
+
+#include <intrin.h>
+
+#pragma intrinsic(_InterlockedIncrement)
+#pragma intrinsic(_InterlockedDecrement)
+#pragma intrinsic(_InterlockedCompareExchange)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define p_atomic_set(_v, _i) (*(_v) = (_i))
+#define p_atomic_read(_v) (*(_v))
+
+static INLINE boolean
+p_atomic_dec_zero(int32_t *v)
+{
+ return _InterlockedDecrement((long *)v) == 0;
+}
+
+static INLINE void
+p_atomic_inc(int32_t *v)
+{
+ _InterlockedIncrement((long *)v);
+}
+
+static INLINE void
+p_atomic_dec(int32_t *v)
+{
+ _InterlockedDecrement((long *)v);
+}
+
+static INLINE int32_t
+p_atomic_cmpxchg(int32_t *v, int32_t old, int32_t _new)
+{
+ return _InterlockedCompareExchange((long *)v, _new, old);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+#if defined(PIPE_ATOMIC_OS_SOLARIS)
+
+#define PIPE_ATOMIC "Solaris OS atomic functions"
+
+#include <atomic.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define p_atomic_set(_v, _i) (*(_v) = (_i))
+#define p_atomic_read(_v) (*(_v))
+
+static INLINE boolean
+p_atomic_dec_zero(int32_t *v)
+{
+ uint32_t n = atomic_dec_32_nv((uint32_t *) v);
+
+ return n != 0;
+}
+
+#define p_atomic_inc(_v) atomic_inc_32((uint32_t *) _v)
+#define p_atomic_dec(_v) atomic_dec_32((uint32_t *) _v)
+
+#define p_atomic_cmpxchg(_v, _old, _new) \
+ atomic_cas_32( (uint32_t *) _v, (uint32_t) _old, (uint32_t) _new)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+
+#ifndef PIPE_ATOMIC
+#error "No pipe_atomic implementation selected"
+#endif
+
+
+
+#endif /* U_ATOMIC_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 16:04:59 +0000