third_party
/
virglrenderer
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

mesa: update to the latest u_atomic.h

Browse Source 
This requires gcc 4.1.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Ryan Neph <ryanneph@google.com>
Acked-by: Gert Wollny <gert.wollny@collabora.com>
macos/master
Chia-I Wu 3 years ago
parent 10b89464a3
commit 50f448ee49
4 changed files with 276 additions and 353 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 4
      meson.build
  2. 352
      src/gallium/auxiliary/util/u_atomic.h
  3. 1
      src/gallium/meson.build
  4. 272
      src/mesa/util/u_atomic.h

4
meson.build
Unescape View File

@ -44,6 +44,10 @@ revision = 3
cc = meson.get_compiler('c')
if cc.get_id() == 'gcc' and cc.version().version_compare('< 4.1')
error('When using GCC, version 4.1 or later is required.')
endif
warnings = [
'-Werror=implicit-function-declaration',
'-Werror=missing-prototypes',

352
src/gallium/auxiliary/util/u_atomic.h
Unescape View File

@ -1,352 +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) && 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))
__attribute__((no_sanitize("memory")))
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))
__attribute__((no_sanitize("memory")))
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))
__attribute__((no_sanitize("memory")))
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 */

1
src/gallium/meson.build
Unescape View File

@ -53,7 +53,6 @@ sources_libgallium = [
'auxiliary/util/u_half.h',
'auxiliary/util/u_prim.h',
'auxiliary/util/u_debug_describe.c',
'auxiliary/util/u_atomic.h',
'auxiliary/util/xxhash.h',
'auxiliary/cso_cache/cso_hash.h',
'auxiliary/cso_cache/cso_cache.h',

272
src/mesa/util/u_atomic.h
Unescape View File

@ -0,0 +1,272 @@
/**
* Many similar implementations exist. See for example libwsbm
* or the linux kernel include/atomic.h
*
* No copyright claimed on this file.
*
*/
#include "no_extern_c.h"
#ifndef U_ATOMIC_H
#define U_ATOMIC_H
#include <stdbool.h>
#include <stdint.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(__sun)
#define PIPE_ATOMIC_OS_SOLARIS
#elif defined(_MSC_VER)
#define PIPE_ATOMIC_MSVC_INTRINSIC
#elif defined(__GNUC__)
#define PIPE_ATOMIC_GCC_INTRINSIC
#else
#error "Unsupported platform"
#endif
/* Implementation using GCC-provided synchronization intrinsics
*/
#if defined(PIPE_ATOMIC_GCC_INTRINSIC)
#define PIPE_ATOMIC "GCC Sync Intrinsics"
#if defined(USE_GCC_ATOMIC_BUILTINS)
/* The builtins with explicit memory model are available since GCC 4.7. */
#define p_atomic_set(_v, _i) __atomic_store_n((_v), (_i), __ATOMIC_RELEASE)
#define p_atomic_read(_v) __atomic_load_n((_v), __ATOMIC_ACQUIRE)
#define p_atomic_read_relaxed(_v) __atomic_load_n((_v), __ATOMIC_RELAXED)
#define p_atomic_dec_zero(v) (__atomic_sub_fetch((v), 1, __ATOMIC_ACQ_REL) == 0)
#define p_atomic_inc(v) (void) __atomic_add_fetch((v), 1, __ATOMIC_ACQ_REL)
#define p_atomic_dec(v) (void) __atomic_sub_fetch((v), 1, __ATOMIC_ACQ_REL)
#define p_atomic_add(v, i) (void) __atomic_add_fetch((v), (i), __ATOMIC_ACQ_REL)
#define p_atomic_inc_return(v) __atomic_add_fetch((v), 1, __ATOMIC_ACQ_REL)
#define p_atomic_dec_return(v) __atomic_sub_fetch((v), 1, __ATOMIC_ACQ_REL)
#define p_atomic_add_return(v, i) __atomic_add_fetch((v), (i), __ATOMIC_ACQ_REL)
#define p_atomic_xchg(v, i) __atomic_exchange_n((v), (i), __ATOMIC_ACQ_REL)
#define PIPE_NATIVE_ATOMIC_XCHG
#else
#define p_atomic_set(_v, _i) (*(_v) = (_i))
#define p_atomic_read(_v) (*(_v))
#define p_atomic_read_relaxed(_v) (*(_v))
#define p_atomic_dec_zero(v) (__sync_sub_and_fetch((v), 1) == 0)
#define p_atomic_inc(v) (void) __sync_add_and_fetch((v), 1)
#define p_atomic_dec(v) (void) __sync_sub_and_fetch((v), 1)
#define p_atomic_add(v, i) (void) __sync_add_and_fetch((v), (i))
#define p_atomic_inc_return(v) __sync_add_and_fetch((v), 1)
#define p_atomic_dec_return(v) __sync_sub_and_fetch((v), 1)
#define p_atomic_add_return(v, i) __sync_add_and_fetch((v), (i))
#endif
/* There is no __atomic_* compare and exchange that returns the current value.
* Also, GCC 5.4 seems unable to optimize a compound statement expression that
* uses an additional stack variable with __atomic_compare_exchange[_n].
*/
#define p_atomic_cmpxchg(v, old, _new) \
__sync_val_compare_and_swap((v), (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"
#define p_atomic_set(_v, _i) (*(_v) = (_i))
#define p_atomic_read(_v) (*(_v))
#define p_atomic_read_relaxed(_v) (*(_v))
#define p_atomic_dec_zero(_v) (p_atomic_dec_return(_v) == 0)
#define p_atomic_inc(_v) ((void) p_atomic_inc_return(_v))
#define p_atomic_dec(_v) ((void) p_atomic_dec_return(_v))
#define p_atomic_add(_v, _i) ((void) p_atomic_add_return((_v), (_i)))
#define p_atomic_inc_return(_v) (++(*(_v)))
#define p_atomic_dec_return(_v) (--(*(_v)))
#define p_atomic_add_return(_v, _i) (*(_v) = *(_v) + (_i))
#define p_atomic_cmpxchg(_v, _old, _new) (*(_v) == (_old) ? (*(_v) = (_new), (_old)) : *(_v))
#endif
#if defined(PIPE_ATOMIC_MSVC_INTRINSIC)
#define PIPE_ATOMIC "MSVC Intrinsics"
/* We use the Windows header's Interlocked*64 functions instead of the
* _Interlocked*64 intrinsics wherever we can, as support for the latter varies
* with target CPU, whereas Windows headers take care of all portability
* issues: using intrinsics where available, falling back to library
* implementations where not.
*/
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif
#include <windows.h>
#include <intrin.h>
#include <assert.h>
/* MSVC supports decltype keyword, but it's only supported on C++ and doesn't
* quite work here; and if a C++-only solution is worthwhile, then it would be
* better to use templates / function overloading, instead of decltype magic.
* Therefore, we rely on implicit casting to LONGLONG for the functions that return
*/
#define p_atomic_set(_v, _i) (*(_v) = (_i))
#define p_atomic_read(_v) (*(_v))
#define p_atomic_read_relaxed(_v) (*(_v))
#define p_atomic_dec_zero(_v) \
(p_atomic_dec_return(_v) == 0)
#define p_atomic_inc(_v) \
((void) p_atomic_inc_return(_v))
#define p_atomic_inc_return(_v) (\
sizeof *(_v) == sizeof(short) ? _InterlockedIncrement16((short *) (_v)) : \
sizeof *(_v) == sizeof(long) ? _InterlockedIncrement ((long *) (_v)) : \
sizeof *(_v) == sizeof(__int64) ? InterlockedIncrement64 ((__int64 *)(_v)) : \
(assert(!"should not get here"), 0))
#define p_atomic_dec(_v) \
((void) p_atomic_dec_return(_v))
#define p_atomic_dec_return(_v) (\
sizeof *(_v) == sizeof(short) ? _InterlockedDecrement16((short *) (_v)) : \
sizeof *(_v) == sizeof(long) ? _InterlockedDecrement ((long *) (_v)) : \
sizeof *(_v) == sizeof(__int64) ? InterlockedDecrement64 ((__int64 *)(_v)) : \
(assert(!"should not get here"), 0))
#define p_atomic_add(_v, _i) \
((void) p_atomic_add_return((_v), (_i)))
#define p_atomic_add_return(_v, _i) (\
sizeof *(_v) == sizeof(char) ? _InterlockedExchangeAdd8 ((char *) (_v), (_i)) : \
sizeof *(_v) == sizeof(short) ? _InterlockedExchangeAdd16((short *) (_v), (_i)) : \
sizeof *(_v) == sizeof(long) ? _InterlockedExchangeAdd ((long *) (_v), (_i)) : \
sizeof *(_v) == sizeof(__int64) ? InterlockedExchangeAdd64((__int64 *)(_v), (_i)) : \
(assert(!"should not get here"), 0))
#define p_atomic_cmpxchg(_v, _old, _new) (\
sizeof *(_v) == sizeof(char) ? _InterlockedCompareExchange8 ((char *) (_v), (char) (_new), (char) (_old)) : \
sizeof *(_v) == sizeof(short) ? _InterlockedCompareExchange16((short *) (_v), (short) (_new), (short) (_old)) : \
sizeof *(_v) == sizeof(long) ? _InterlockedCompareExchange ((long *) (_v), (long) (_new), (long) (_old)) : \
sizeof *(_v) == sizeof(__int64) ? InterlockedCompareExchange64 ((__int64 *)(_v), (__int64)(_new), (__int64)(_old)) : \
(assert(!"should not get here"), 0))
#endif
#if defined(PIPE_ATOMIC_OS_SOLARIS)
#define PIPE_ATOMIC "Solaris OS atomic functions"
#include <atomic.h>
#include <assert.h>
#define p_atomic_set(_v, _i) (*(_v) = (_i))
#define p_atomic_read(_v) (*(_v))
#define p_atomic_dec_zero(v) (\
sizeof(*v) == sizeof(uint8_t) ? atomic_dec_8_nv ((uint8_t *)(v)) == 0 : \
sizeof(*v) == sizeof(uint16_t) ? atomic_dec_16_nv((uint16_t *)(v)) == 0 : \
sizeof(*v) == sizeof(uint32_t) ? atomic_dec_32_nv((uint32_t *)(v)) == 0 : \
sizeof(*v) == sizeof(uint64_t) ? atomic_dec_64_nv((uint64_t *)(v)) == 0 : \
(assert(!"should not get here"), 0))
#define p_atomic_inc(v) (void) (\
sizeof(*v) == sizeof(uint8_t) ? atomic_inc_8 ((uint8_t *)(v)) : \
sizeof(*v) == sizeof(uint16_t) ? atomic_inc_16((uint16_t *)(v)) : \
sizeof(*v) == sizeof(uint32_t) ? atomic_inc_32((uint32_t *)(v)) : \
sizeof(*v) == sizeof(uint64_t) ? atomic_inc_64((uint64_t *)(v)) : \
(assert(!"should not get here"), 0))
#define p_atomic_inc_return(v) (__typeof(*v))( \
sizeof(*v) == sizeof(uint8_t) ? atomic_inc_8_nv ((uint8_t *)(v)) : \
sizeof(*v) == sizeof(uint16_t) ? atomic_inc_16_nv((uint16_t *)(v)) : \
sizeof(*v) == sizeof(uint32_t) ? atomic_inc_32_nv((uint32_t *)(v)) : \
sizeof(*v) == sizeof(uint64_t) ? atomic_inc_64_nv((uint64_t *)(v)) : \
(assert(!"should not get here"), 0))
#define p_atomic_dec(v) (void) ( \
sizeof(*v) == sizeof(uint8_t) ? atomic_dec_8 ((uint8_t *)(v)) : \
sizeof(*v) == sizeof(uint16_t) ? atomic_dec_16((uint16_t *)(v)) : \
sizeof(*v) == sizeof(uint32_t) ? atomic_dec_32((uint32_t *)(v)) : \
sizeof(*v) == sizeof(uint64_t) ? atomic_dec_64((uint64_t *)(v)) : \
(assert(!"should not get here"), 0))
#define p_atomic_dec_return(v) (__typeof(*v))( \
sizeof(*v) == sizeof(uint8_t) ? atomic_dec_8_nv ((uint8_t *)(v)) : \
sizeof(*v) == sizeof(uint16_t) ? atomic_dec_16_nv((uint16_t *)(v)) : \
sizeof(*v) == sizeof(uint32_t) ? atomic_dec_32_nv((uint32_t *)(v)) : \
sizeof(*v) == sizeof(uint64_t) ? atomic_dec_64_nv((uint64_t *)(v)) : \
(assert(!"should not get here"), 0))
#define p_atomic_add(v, i) (void) ( \
sizeof(*v) == sizeof(uint8_t) ? atomic_add_8 ((uint8_t *)(v), (i)) : \
sizeof(*v) == sizeof(uint16_t) ? atomic_add_16((uint16_t *)(v), (i)) : \
sizeof(*v) == sizeof(uint32_t) ? atomic_add_32((uint32_t *)(v), (i)) : \
sizeof(*v) == sizeof(uint64_t) ? atomic_add_64((uint64_t *)(v), (i)) : \
(assert(!"should not get here"), 0))
#define p_atomic_add_return(v, i) (__typeof(*v)) ( \
sizeof(*v) == sizeof(uint8_t) ? atomic_add_8_nv ((uint8_t *)(v), (i)) : \
sizeof(*v) == sizeof(uint16_t) ? atomic_add_16_nv((uint16_t *)(v), (i)) : \
sizeof(*v) == sizeof(uint32_t) ? atomic_add_32_nv((uint32_t *)(v), (i)) : \
sizeof(*v) == sizeof(uint64_t) ? atomic_add_64_nv((uint64_t *)(v), (i)) : \
(assert(!"should not get here"), 0))
#define p_atomic_cmpxchg(v, old, _new) (__typeof(*v))( \
sizeof(*v) == sizeof(uint8_t) ? atomic_cas_8 ((uint8_t *)(v), (uint8_t )(old), (uint8_t )(_new)) : \
sizeof(*v) == sizeof(uint16_t) ? atomic_cas_16((uint16_t *)(v), (uint16_t)(old), (uint16_t)(_new)) : \
sizeof(*v) == sizeof(uint32_t) ? atomic_cas_32((uint32_t *)(v), (uint32_t)(old), (uint32_t)(_new)) : \
sizeof(*v) == sizeof(uint64_t) ? atomic_cas_64((uint64_t *)(v), (uint64_t)(old), (uint64_t)(_new)) : \
(assert(!"should not get here"), 0))
#endif
#ifndef PIPE_ATOMIC
#error "No pipe_atomic implementation selected"
#endif
#ifndef PIPE_NATIVE_ATOMIC_XCHG
static inline uint32_t p_atomic_xchg_32(uint32_t *v, uint32_t i)
{
uint32_t actual = p_atomic_read(v);
uint32_t expected;
do {
expected = actual;
actual = p_atomic_cmpxchg(v, expected, i);
} while (expected != actual);
return actual;
}
static inline uint64_t p_atomic_xchg_64(uint64_t *v, uint64_t i)
{
uint64_t actual = p_atomic_read(v);
uint64_t expected;
do {
expected = actual;
actual = p_atomic_cmpxchg(v, expected, i);
} while (expected != actual);
return actual;
}
#define p_atomic_xchg(v, i) (__typeof(*(v)))( \
sizeof(*(v)) == sizeof(uint32_t) ? p_atomic_xchg_32((uint32_t *)(v), (uint32_t)(i)) : \
sizeof(*(v)) == sizeof(uint64_t) ? p_atomic_xchg_64((uint64_t *)(v), (uint64_t)(i)) : \
(assert(!"should not get here"), 0))
#endif
#endif /* U_ATOMIC_H */
Write Preview
Loading…
Cancel
Save