diff options
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_atomic.h')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_atomic.h | 401 |
1 files changed, 0 insertions, 401 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_atomic.h b/mesalib/src/gallium/auxiliary/util/u_atomic.h deleted file mode 100644 index 2500bc752..000000000 --- a/mesalib/src/gallium/auxiliary/util/u_atomic.h +++ /dev/null @@ -1,401 +0,0 @@ -/** - * 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) && (PIPE_CC_GCC_VERSION >= 401) -#define PIPE_ATOMIC_GCC_INTRINSIC -#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 -#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_inc_return(int32_t *v) -{ - return __sync_add_and_fetch(v, 1); -} - -static INLINE int32_t -p_atomic_dec_return(int32_t *v) -{ - return __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 /* 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_inc_return(int32_t *v) -{ - return __sync_add_and_fetch(v, 1); -} - -static INLINE int32_t -p_atomic_dec_return(int32_t *v) -{ - return __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 - - - -/* 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_inc_return(int32_t *v) -{ - return __sync_add_and_fetch(v, 1); -} - -static INLINE int32_t -p_atomic_dec_return(int32_t *v) -{ - return __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_inc_return(_v) ((*(_v))++) -#define p_atomic_dec_return(_v) ((*(_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 int32_t -p_atomic_inc_return(int32_t *v) -{ - return _InterlockedIncrement((long *)v); -} - -static INLINE void -p_atomic_dec(int32_t *v) -{ - _InterlockedDecrement((long *)v); -} - -static INLINE int32_t -p_atomic_dec_return(int32_t *v) -{ - return _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_inc_return(_v) atomic_inc_32_nv((uint32_t *) _v) -#define p_atomic_dec_return(_v) atomic_dec_32_nv((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 */ |