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Diffstat (limited to 'src/gallium/include/pipe/p_atomic.h')
-rw-r--r--src/gallium/include/pipe/p_atomic.h353
1 files changed, 0 insertions, 353 deletions
diff --git a/src/gallium/include/pipe/p_atomic.h b/src/gallium/include/pipe/p_atomic.h
deleted file mode 100644
index 0c3fbae428..0000000000
--- a/src/gallium/include/pipe/p_atomic.h
+++ /dev/null
@@ -1,353 +0,0 @@
-/**
- * Many similar implementations exist. See for example libwsbm
- * or the linux kernel include/atomic.h
- *
- * No copyright claimed on this file.
- *
- */
-
-#ifndef P_ATOMIC_H
-#define P_ATOMIC_H
-
-#include "p_compiler.h"
-#include "p_defines.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-/* 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_CC_MSVC) && defined(PIPE_SUBSYSTEM_WINDOWS_USER))
-#define PIPE_ATOMIC_OS_MS_INTERLOCK
-#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)
-#define PIPE_ATOMIC_GCC_INTRINSIC
-#else
-#define PIPE_ATOMIC_MUTEX
-#endif
-
-
-
-#if defined(PIPE_ATOMIC_ASM_GCC_X86)
-
-#define PIPE_ATOMIC "GCC x86 assembly"
-
-struct pipe_atomic {
- int32_t count;
-};
-
-#define p_atomic_set(_v, _i) ((_v)->count = (_i))
-#define p_atomic_read(_v) ((_v)->count)
-
-
-static INLINE boolean
-p_atomic_dec_zero(struct pipe_atomic *v)
-{
- unsigned char c;
-
- __asm__ __volatile__("lock; decl %0; sete %1":"+m"(v->count), "=qm"(c)
- ::"memory");
-
- return c != 0;
-}
-
-static INLINE void
-p_atomic_inc(struct pipe_atomic *v)
-{
- __asm__ __volatile__("lock; incl %0":"+m"(v->count));
-}
-
-static INLINE void
-p_atomic_dec(struct pipe_atomic *v)
-{
- __asm__ __volatile__("lock; decl %0":"+m"(v->count));
-}
-
-static INLINE int32_t
-p_atomic_cmpxchg(struct pipe_atomic *v, int32_t old, int32_t _new)
-{
- return __sync_val_compare_and_swap(&v->count, old, _new);
-}
-#endif
-
-
-
-/* Implementation using GCC-provided synchronization intrinsics
- */
-#if defined(PIPE_ATOMIC_GCC_INTRINSIC)
-
-#define PIPE_ATOMIC "GCC Sync Intrinsics"
-
-struct pipe_atomic {
- int32_t count;
-};
-
-#define p_atomic_set(_v, _i) ((_v)->count = (_i))
-#define p_atomic_read(_v) ((_v)->count)
-
-
-static INLINE boolean
-p_atomic_dec_zero(struct pipe_atomic *v)
-{
- return (__sync_sub_and_fetch(&v->count, 1) == 0);
-}
-
-static INLINE void
-p_atomic_inc(struct pipe_atomic *v)
-{
- (void) __sync_add_and_fetch(&v->count, 1);
-}
-
-static INLINE void
-p_atomic_dec(struct pipe_atomic *v)
-{
- (void) __sync_sub_and_fetch(&v->count, 1);
-}
-
-static INLINE int32_t
-p_atomic_cmpxchg(struct pipe_atomic *v, int32_t old, int32_t _new)
-{
- return __sync_val_compare_and_swap(&v->count, old, _new);
-}
-#endif
-
-
-
-/* Unlocked version for single threaded environments, such as some
- * windows kernel modules.
- */
-#if defined(PIPE_ATOMIC_OS_UNLOCKED)
-
-#define PIPE_ATOMIC "Unlocked"
-
-struct pipe_atomic
-{
- int32_t count;
-};
-
-#define p_atomic_set(_v, _i) ((_v)->count = (_i))
-#define p_atomic_read(_v) ((_v)->count)
-#define p_atomic_dec_zero(_v) ((boolean) --(_v)->count)
-#define p_atomic_inc(_v) ((void) (_v)->count++)
-#define p_atomic_dec(_v) ((void) (_v)->count--)
-#define p_atomic_cmpxchg(_v, old, _new) ((_v)->count == old ? (_v)->count = (_new) : (_v)->count)
-
-#endif
-
-
-/* Locally coded assembly for MSVC on x86:
- */
-#if defined(PIPE_ATOMIC_ASM_MSVC_X86)
-
-#define PIPE_ATOMIC "MSVC x86 assembly"
-
-struct pipe_atomic
-{
- int32_t count;
-};
-
-#define p_atomic_set(_v, _i) ((_v)->count = (_i))
-#define p_atomic_read(_v) ((_v)->count)
-
-static INLINE boolean
-p_atomic_dec_zero(struct pipe_atomic *v)
-{
- int32_t *pcount = &v->count;
- unsigned char c;
-
- __asm {
- mov eax, [pcount]
- lock dec dword ptr [eax]
- sete byte ptr [c]
- }
-
- return c != 0;
-}
-
-static INLINE void
-p_atomic_inc(struct pipe_atomic *v)
-{
- int32_t *pcount = &v->count;
-
- __asm {
- mov eax, [pcount]
- lock inc dword ptr [eax]
- }
-}
-
-static INLINE void
-p_atomic_dec(struct pipe_atomic *v)
-{
- int32_t *pcount = &v->count;
-
- __asm {
- mov eax, [pcount]
- lock dec dword ptr [eax]
- }
-}
-
-static INLINE int32_t
-p_atomic_cmpxchg(struct pipe_atomic *v, int32_t old, int32_t _new)
-{
- int32_t *pcount = &v->count;
- int32_t orig;
-
- __asm {
- mov ecx, [pcount]
- mov eax, [old]
- mov edx, [_new]
- lock cmpxchg [ecx], edx
- mov [orig], eax
- }
-
- return orig;
-}
-#endif
-
-
-#if defined(PIPE_ATOMIC_OS_MS_INTERLOCK)
-
-#define PIPE_ATOMIC "MS userspace interlocks"
-
-#include <windows.h>
-
-struct pipe_atomic
-{
- volatile long count;
-};
-
-#define p_atomic_set(_v, _i) ((_v)->count = (_i))
-#define p_atomic_read(_v) ((_v)->count)
-
-static INLINE boolean
-p_atomic_dec_zero(struct pipe_atomic *v)
-{
- return InterlockedDecrement(&v->count) == 0;
-}
-
-static INLINE void
-p_atomic_inc(struct pipe_atomic *v)
-{
- InterlockedIncrement(&v->count);
-}
-
-static INLINE void
-p_atomic_dec(struct pipe_atomic *v)
-{
- InterlockedDecrement(&v->count);
-}
-
-static INLINE int32_t
-p_atomic_cmpxchg(struct pipe_atomic *v, int32_t old, int32_t _new)
-{
- return InterlockedCompareExchange(&v->count, _new, old);
-}
-
-#endif
-
-
-
-#if defined(PIPE_ATOMIC_MUTEX)
-
-#define PIPE_ATOMIC "mutex-based fallback"
-
-#include "pipe/p_thread.h"
-
-/**
- * This implementation should really not be used.
- * Add an assembly port instead. It may abort and
- * doesn't destroy used mutexes.
- */
-
-struct pipe_atomic {
- pipe_mutex mutex;
- int32_t count;
-};
-
-static INLINE void
-p_atomic_set(struct pipe_atomic *v, int32_t i)
-{
- pipe_mutex_init(v->mutex);
- pipe_mutex_lock(v->mutex);
- v->count = i;
- pipe_mutex_unlock(v->mutex);
-}
-
-static INLINE int32_t
-p_atomic_read(struct pipe_atomic *v)
-{
- int32_t ret;
-
- pipe_mutex_lock(v->mutex);
- ret = v->count;
- pipe_mutex_unlock(v->mutex);
- return ret;
-}
-
-static INLINE void
-p_atomic_inc(struct pipe_atomic *v)
-{
- pipe_mutex_lock(v->mutex);
- ++v->count;
- pipe_mutex_unlock(v->mutex);
-}
-
-static INLINE void
-p_atomic_dec(struct pipe_atomic *v)
-{
- pipe_mutex_lock(v->mutex);
- --v->count;
- pipe_mutex_unlock(v->mutex);
-}
-
-static INLINE boolean
-p_atomic_dec_zero(struct pipe_atomic *v)
-{
- boolean ret;
-
- pipe_mutex_lock(v->mutex);
- ret = (--v->count == 0);
- pipe_mutex_unlock(v->mutex);
- return ret;
-}
-
-static INLINE int32_t
-p_atomic_cmpxchg(struct pipe_atomic *v, int32_t old, int32_t _new)
-{
- int32_t ret;
-
- pipe_mutex_lock(v->mutex);
- ret = v->count;
- if (ret == old)
- v->count = _new;
- pipe_mutex_unlock(v->mutex);
-
- return ret;
-}
-
-#endif
-
-
-#ifndef PIPE_ATOMIC
-#error "No pipe_atomic implementation selected"
-#endif
-
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* P_ATOMIC_H */
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