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/*
* Copyright 2016 Józef Kucia for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef __VKD3D_COMMON_H
#define __VKD3D_COMMON_H
#include "config.h"
#include "vkd3d_windows.h"
#include <ctype.h>
#include <limits.h>
#include <stdbool.h>
#ifdef _MSC_VER
#include <intrin.h>
#endif
#ifndef ARRAY_SIZE
# define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
#endif
#define DIV_ROUND_UP(a, b) ((a) % (b) == 0 ? (a) / (b) : (a) / (b) + 1)
#define STATIC_ASSERT(e) extern void __VKD3D_STATIC_ASSERT__(int [(e) ? 1 : -1])
#define MEMBER_SIZE(t, m) sizeof(((t *)0)->m)
static inline size_t align(size_t addr, size_t alignment)
{
return (addr + (alignment - 1)) & ~(alignment - 1);
}
#ifdef __GNUC__
# define VKD3D_PRINTF_FUNC(fmt, args) __attribute__((format(printf, fmt, args)))
# define VKD3D_UNUSED __attribute__((unused))
#else
# define VKD3D_PRINTF_FUNC(fmt, args)
# define VKD3D_UNUSED
#endif /* __GNUC__ */
static inline unsigned int vkd3d_popcount(unsigned int v)
{
#ifdef _MSC_VER
return __popcnt(v);
#elif defined(HAVE_BUILTIN_POPCOUNT)
return __builtin_popcount(v);
#else
v -= (v >> 1) & 0x55555555;
v = (v & 0x33333333) + ((v >> 2) & 0x33333333);
return (((v + (v >> 4)) & 0x0f0f0f0f) * 0x01010101) >> 24;
#endif
}
static inline bool vkd3d_bitmask_is_contiguous(unsigned int mask)
{
unsigned int i, j;
for (i = 0, j = 0; i < sizeof(mask) * CHAR_BIT; ++i)
{
if (mask & (1u << i))
++j;
else if (j)
break;
}
return vkd3d_popcount(mask) == j;
}
/* Undefined for x == 0. */
static inline unsigned int vkd3d_log2i(unsigned int x)
{
#ifdef _MSC_VER
/* _BitScanReverse returns the index of the highest set bit,
* unlike clz which is 31 - index. */
unsigned long result;
_BitScanReverse(&result, x);
return (unsigned int)result;
#elif defined(HAVE_BUILTIN_CLZ)
return __builtin_clz(x) ^ 0x1f;
#else
static const unsigned int l[] =
{
~0u, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
};
unsigned int i;
return (i = x >> 16) ? (x = i >> 8) ? l[x] + 24
: l[i] + 16 : (i = x >> 8) ? l[i] + 8 : l[x];
#endif
}
static inline int ascii_isupper(int c)
{
return 'A' <= c && c <= 'Z';
}
static inline int ascii_tolower(int c)
{
return ascii_isupper(c) ? c - 'A' + 'a' : c;
}
static inline int ascii_strcasecmp(const char *a, const char *b)
{
int c_a, c_b;
do
{
c_a = ascii_tolower(*a++);
c_b = ascii_tolower(*b++);
} while (c_a == c_b && c_a != '\0');
return c_a - c_b;
}
#ifndef _WIN32
# if HAVE_SYNC_ADD_AND_FETCH
static inline LONG InterlockedIncrement(LONG volatile *x)
{
return __sync_add_and_fetch(x, 1);
}
# else
# error "InterlockedIncrement() not implemented for this platform"
# endif /* HAVE_SYNC_ADD_AND_FETCH */
# if HAVE_SYNC_SUB_AND_FETCH
static inline LONG InterlockedDecrement(LONG volatile *x)
{
return __sync_sub_and_fetch(x, 1);
}
# else
# error "InterlockedDecrement() not implemented for this platform"
# endif
#endif /* _WIN32 */
#if HAVE_SYNC_ADD_AND_FETCH
# define atomic_add_fetch(ptr, val) __sync_add_and_fetch(ptr, val)
#else
# error "atomic_add_fetch() not implemented for this platform"
#endif /* HAVE_SYNC_ADD_AND_FETCH */
static inline void vkd3d_parse_version(const char *version, int *major, int *minor)
{
*major = atoi(version);
while (isdigit(*version))
++version;
if (*version == '.')
++version;
*minor = atoi(version);
}
#endif /* __VKD3D_COMMON_H */
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