MAYBE_UNUSED is replaced by ASSERTED. CLAMP in u_math.h is updated to
avoid a compile error.
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>
v2: cherry pick virglrenderer-specirfic e1e6d3cb ("Include sys/types.h
in p_compiler.h")
macos/master
Chia-I Wu
3 years ago
parent
5a80957f86
commit
c5875c0a64
@ -0,0 +1,480 @@ |
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/*
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* Copyright © 2014 Intel Corporation |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a |
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* copy of this software and associated documentation files (the "Software"), |
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* to deal in the Software without restriction, including without limitation |
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* the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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* and/or sell copies of the Software, and to permit persons to whom the |
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* Software is furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice (including the next |
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* paragraph) shall be included in all copies or substantial portions of the |
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* Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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* IN THE SOFTWARE. |
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*/ |
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#ifndef UTIL_MACROS_H |
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#define UTIL_MACROS_H |
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#include <stdio.h> |
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#include <assert.h> |
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#include "c99_compat.h" |
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#include "c11_compat.h" |
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#include <stdint.h> |
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/* Compute the size of an array */ |
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#ifndef ARRAY_SIZE |
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# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) |
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#endif |
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/* For compatibility with Clang's __has_builtin() */ |
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#ifndef __has_builtin |
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# define __has_builtin(x) 0 |
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#endif |
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#ifndef __has_attribute |
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# define __has_attribute(x) 0 |
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#endif |
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/**
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* __builtin_expect macros |
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*/ |
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#if !defined(HAVE___BUILTIN_EXPECT) |
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# define __builtin_expect(x, y) (x) |
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#endif |
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#ifndef likely |
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# ifdef HAVE___BUILTIN_EXPECT |
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# define likely(x) __builtin_expect(!!(x), 1) |
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# define unlikely(x) __builtin_expect(!!(x), 0) |
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# else |
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# define likely(x) (x) |
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# define unlikely(x) (x) |
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# endif |
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#endif |
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/**
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* __builtin_types_compatible_p compat |
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*/ |
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#if defined(__cplusplus) || !defined(HAVE___BUILTIN_TYPES_COMPATIBLE_P) |
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# define __builtin_types_compatible_p(type1, type2) (1) |
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#endif |
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/**
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* Static (compile-time) assertion. |
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*/ |
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#if defined(_MSC_VER) |
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/* MSVC doesn't like VLA's, but it also dislikes zero length arrays
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* (which gcc is happy with), so we have to define STATIC_ASSERT() |
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* slightly differently. |
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*/ |
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# define STATIC_ASSERT(COND) do { \ |
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(void) sizeof(char [(COND) != 0]); \
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} while (0) |
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#elif defined(__GNUC__) |
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/* This version of STATIC_ASSERT() relies on VLAs. If COND is
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* false/zero, the array size will be -1 and we'll get a compile |
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* error |
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*/ |
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# define STATIC_ASSERT(COND) do { \ |
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(void) sizeof(char [1 - 2*!(COND)]); \
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} while (0) |
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#else |
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# define STATIC_ASSERT(COND) do { } while (0) |
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#endif |
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/**
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* container_of - cast a member of a structure out to the containing structure |
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* @ptr: the pointer to the member. |
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* @type: the type of the container struct this is embedded in. |
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* @member: the name of the member within the struct. |
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*/ |
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#ifndef __GNUC__ |
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/* a grown-up compiler is required for the extra type checking: */ |
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# define container_of(ptr, type, member) \ |
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(type*)((uint8_t *)ptr - offsetof(type, member)) |
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#else |
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# define __same_type(a, b) \ |
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__builtin_types_compatible_p(__typeof__(a), __typeof__(b)) |
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# define container_of(ptr, type, member) ({ \ |
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uint8_t *__mptr = (uint8_t *)(ptr); \
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STATIC_ASSERT(__same_type(*(ptr), ((type *)0)->member) || \
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__same_type(*(ptr), void) || \
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!"pointer type mismatch in container_of()"); \
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((type *)(__mptr - offsetof(type, member))); \
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}) |
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#endif |
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/**
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* Unreachable macro. Useful for suppressing "control reaches end of non-void |
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* function" warnings. |
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*/ |
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#if defined(HAVE___BUILTIN_UNREACHABLE) || __has_builtin(__builtin_unreachable) |
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#define unreachable(str) \ |
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do { \
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assert(!str); \
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__builtin_unreachable(); \
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} while (0) |
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#elif defined (_MSC_VER) |
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#define unreachable(str) \ |
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do { \
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assert(!str); \
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__assume(0); \
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} while (0) |
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#else |
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#define unreachable(str) assert(!str) |
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#endif |
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/**
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* Assume macro. Useful for expressing our assumptions to the compiler, |
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* typically for purposes of silencing warnings. |
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*/ |
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#if __has_builtin(__builtin_assume) |
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#define assume(expr) \ |
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do { \
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assert(expr); \
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__builtin_assume(expr); \
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} while (0) |
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#elif defined HAVE___BUILTIN_UNREACHABLE |
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#define assume(expr) ((expr) ? ((void) 0) \ |
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: (assert(!"assumption failed"), \
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__builtin_unreachable())) |
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#elif defined (_MSC_VER) |
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#define assume(expr) __assume(expr) |
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#else |
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#define assume(expr) assert(expr) |
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#endif |
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/* Attribute const is used for functions that have no effects other than their
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* return value, and only rely on the argument values to compute the return |
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* value. As a result, calls to it can be CSEed. Note that using memory |
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* pointed to by the arguments is not allowed for const functions. |
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*/ |
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#ifdef HAVE_FUNC_ATTRIBUTE_CONST |
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#define ATTRIBUTE_CONST __attribute__((__const__)) |
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#else |
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#define ATTRIBUTE_CONST |
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#endif |
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#ifdef HAVE_FUNC_ATTRIBUTE_FLATTEN |
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#define FLATTEN __attribute__((__flatten__)) |
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#else |
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#define FLATTEN |
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#endif |
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#ifdef HAVE_FUNC_ATTRIBUTE_FORMAT |
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#if defined (__MINGW_PRINTF_FORMAT) |
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# define PRINTFLIKE(f, a) __attribute__ ((format(__MINGW_PRINTF_FORMAT, f, a))) |
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#else |
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# define PRINTFLIKE(f, a) __attribute__ ((format(__printf__, f, a))) |
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#endif |
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#else |
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#define PRINTFLIKE(f, a) |
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#endif |
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#ifdef HAVE_FUNC_ATTRIBUTE_MALLOC |
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#define MALLOCLIKE __attribute__((__malloc__)) |
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#else |
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#define MALLOCLIKE |
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#endif |
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/* Forced function inlining */ |
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/* Note: Clang also sets __GNUC__ (see other cases below) */ |
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#ifndef ALWAYS_INLINE |
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# if defined(__GNUC__) |
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# define ALWAYS_INLINE inline __attribute__((always_inline)) |
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# elif defined(_MSC_VER) |
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# define ALWAYS_INLINE __forceinline |
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# else |
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# define ALWAYS_INLINE inline |
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# endif |
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#endif |
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/* Used to optionally mark structures with misaligned elements or size as
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* packed, to trade off performance for space. |
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*/ |
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#ifdef HAVE_FUNC_ATTRIBUTE_PACKED |
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#define PACKED __attribute__((__packed__)) |
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#else |
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#define PACKED |
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#endif |
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/* Attribute pure is used for functions that have no effects other than their
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* return value. As a result, calls to it can be dead code eliminated. |
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*/ |
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#ifdef HAVE_FUNC_ATTRIBUTE_PURE |
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#define ATTRIBUTE_PURE __attribute__((__pure__)) |
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#else |
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#define ATTRIBUTE_PURE |
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#endif |
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#ifdef HAVE_FUNC_ATTRIBUTE_RETURNS_NONNULL |
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#define ATTRIBUTE_RETURNS_NONNULL __attribute__((__returns_nonnull__)) |
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#else |
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#define ATTRIBUTE_RETURNS_NONNULL |
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#endif |
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#ifndef NORETURN |
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# ifdef _MSC_VER |
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# define NORETURN __declspec(noreturn) |
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# elif defined HAVE_FUNC_ATTRIBUTE_NORETURN |
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# define NORETURN __attribute__((__noreturn__)) |
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# else |
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# define NORETURN |
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# endif |
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#endif |
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#ifdef _MSC_VER |
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#define ALIGN16 __declspec(align(16)) |
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#else |
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#define ALIGN16 __attribute__((aligned(16))) |
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#endif |
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#ifdef __cplusplus |
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/**
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* Macro function that evaluates to true if T is a trivially |
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* destructible type -- that is, if its (non-virtual) destructor |
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* performs no action and all member variables and base classes are |
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* trivially destructible themselves. |
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*/ |
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# if (defined(__clang__) && defined(__has_feature)) |
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# if __has_feature(has_trivial_destructor) |
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# define HAS_TRIVIAL_DESTRUCTOR(T) __has_trivial_destructor(T) |
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# endif |
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# elif defined(__GNUC__) |
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# if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3))) |
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# define HAS_TRIVIAL_DESTRUCTOR(T) __has_trivial_destructor(T) |
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# endif |
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# elif defined(_MSC_VER) && !defined(__INTEL_COMPILER) |
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# define HAS_TRIVIAL_DESTRUCTOR(T) __has_trivial_destructor(T) |
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# endif |
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# ifndef HAS_TRIVIAL_DESTRUCTOR |
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/* It's always safe (if inefficient) to assume that a
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* destructor is non-trivial. |
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*/ |
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# define HAS_TRIVIAL_DESTRUCTOR(T) (false) |
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# endif |
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#endif |
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/**
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* PUBLIC/USED macros |
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* |
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* If we build the library with gcc's -fvisibility=hidden flag, we'll |
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* use the PUBLIC macro to mark functions that are to be exported. |
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* |
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* We also need to define a USED attribute, so the optimizer doesn't |
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* inline a static function that we later use in an alias. - ajax |
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*/ |
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#ifndef PUBLIC |
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# if defined(_WIN32) |
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# define PUBLIC __declspec(dllexport) |
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# define USED |
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# elif defined(__GNUC__) |
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# define PUBLIC __attribute__((visibility("default"))) |
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# define USED __attribute__((used)) |
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# else |
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# define PUBLIC |
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# define USED |
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# endif |
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#endif |
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/**
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* UNUSED marks variables (or sometimes functions) that have to be defined, |
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* but are sometimes (or always) unused beyond that. A common case is for |
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* a function parameter to be used in some build configurations but not others. |
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* Another case is fallback vfuncs that don't do anything with their params. |
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* |
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* Note that this should not be used for identifiers used in `assert()`; |
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* see ASSERTED below. |
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*/ |
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#ifdef HAVE_FUNC_ATTRIBUTE_UNUSED |
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#define UNUSED __attribute__((unused)) |
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#else |
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#define UNUSED |
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#endif |
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/**
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* Use ASSERTED to indicate that an identifier is unused outside of an `assert()`, |
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* so that assert-free builds don't get "unused variable" warnings. |
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*/ |
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#ifdef NDEBUG |
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#define ASSERTED UNUSED |
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#else |
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#define ASSERTED |
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#endif |
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#ifdef HAVE_FUNC_ATTRIBUTE_WARN_UNUSED_RESULT |
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#define MUST_CHECK __attribute__((warn_unused_result)) |
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#else |
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#define MUST_CHECK |
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#endif |
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#if defined(__GNUC__) |
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#define ATTRIBUTE_NOINLINE __attribute__((noinline)) |
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#elif defined(_MSC_VER) |
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#define ATTRIBUTE_NOINLINE __declspec(noinline) |
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#else |
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#define ATTRIBUTE_NOINLINE |
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#endif |
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/* Use as: enum name { X, Y } ENUM_PACKED; */ |
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#if defined(__GNUC__) |
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#define ENUM_PACKED __attribute__((packed)) |
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#else |
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#define ENUM_PACKED |
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#endif |
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/**
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* Check that STRUCT::FIELD can hold MAXVAL. We use a lot of bitfields |
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* in Mesa/gallium. We have to be sure they're of sufficient size to |
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* hold the largest expected value. |
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* Note that with MSVC, enums are signed and enum bitfields need one extra |
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* high bit (always zero) to ensure the max value is handled correctly. |
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* This macro will detect that with MSVC, but not GCC. |
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*/ |
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#define ASSERT_BITFIELD_SIZE(STRUCT, FIELD, MAXVAL) \ |
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|
do { \
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ASSERTED STRUCT s; \
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|
s.FIELD = (MAXVAL); \
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|
assert((int) s.FIELD == (MAXVAL) && "Insufficient bitfield size!"); \
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|
} while (0) |
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/** Compute ceiling of integer quotient of A divided by B. */ |
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#define DIV_ROUND_UP( A, B ) ( ((A) + (B) - 1) / (B) ) |
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/** Clamp X to [MIN,MAX]. Turn NaN into MIN, arbitrarily. */ |
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|
#define CLAMP( X, MIN, MAX ) ( (X)>(MIN) ? ((X)>(MAX) ? (MAX) : (X)) : (MIN) ) |
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/* Syntax sugar occuring frequently in graphics code */ |
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|
#define SATURATE( X ) CLAMP(X, 0.0f, 1.0f) |
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/** Minimum of two values: */ |
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|
#define MIN2( A, B ) ( (A)<(B) ? (A) : (B) ) |
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/** Maximum of two values: */ |
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#define MAX2( A, B ) ( (A)>(B) ? (A) : (B) ) |
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/** Minimum and maximum of three values: */ |
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|
#define MIN3( A, B, C ) ((A) < (B) ? MIN2(A, C) : MIN2(B, C)) |
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|
#define MAX3( A, B, C ) ((A) > (B) ? MAX2(A, C) : MAX2(B, C)) |
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/** Align a value to a power of two */ |
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|
#define ALIGN_POT(x, pot_align) (((x) + (pot_align) - 1) & ~((pot_align) - 1)) |
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|
/**
|
||||||
|
* Macro for declaring an explicit conversion operator. Defaults to an |
||||||
|
* implicit conversion if C++11 is not supported. |
||||||
|
*/ |
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|
#if __cplusplus >= 201103L |
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|
#define EXPLICIT_CONVERSION explicit |
||||||
|
#elif defined(__cplusplus) |
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|
#define EXPLICIT_CONVERSION |
||||||
|
#endif |
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/** Set a single bit */ |
||||||
|
#define BITFIELD_BIT(b) (1u << (b)) |
||||||
|
/** Set all bits up to excluding bit b */ |
||||||
|
#define BITFIELD_MASK(b) \ |
||||||
|
((b) == 32 ? (~0u) : BITFIELD_BIT((b) % 32) - 1) |
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|
/** Set count bits starting from bit b */ |
||||||
|
#define BITFIELD_RANGE(b, count) \ |
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|
(BITFIELD_MASK((b) + (count)) & ~BITFIELD_MASK(b)) |
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|
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||||||
|
/** Set a single bit */ |
||||||
|
#define BITFIELD64_BIT(b) (1ull << (b)) |
||||||
|
/** Set all bits up to excluding bit b */ |
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|
#define BITFIELD64_MASK(b) \ |
||||||
|
((b) == 64 ? (~0ull) : BITFIELD64_BIT(b) - 1) |
||||||
|
/** Set count bits starting from bit b */ |
||||||
|
#define BITFIELD64_RANGE(b, count) \ |
||||||
|
(BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b)) |
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||||||
|
static inline int64_t |
||||||
|
u_intN_max(unsigned bit_size) |
||||||
|
{ |
||||||
|
assert(bit_size <= 64 && bit_size > 0); |
||||||
|
return INT64_MAX >> (64 - bit_size); |
||||||
|
} |
||||||
|
|
||||||
|
static inline int64_t |
||||||
|
u_intN_min(unsigned bit_size) |
||||||
|
{ |
||||||
|
/* On 2's compliment platforms, which is every platform Mesa is likely to
|
||||||
|
* every worry about, stdint.h generally calculated INT##_MIN in this |
||||||
|
* manner. |
||||||
|
*/ |
||||||
|
return (-u_intN_max(bit_size)) - 1; |
||||||
|
} |
||||||
|
|
||||||
|
static inline uint64_t |
||||||
|
u_uintN_max(unsigned bit_size) |
||||||
|
{ |
||||||
|
assert(bit_size <= 64 && bit_size > 0); |
||||||
|
return UINT64_MAX >> (64 - bit_size); |
||||||
|
} |
||||||
|
|
||||||
|
/* TODO: In future we should try to move this to u_debug.h once header
|
||||||
|
* dependencies are reorganised to allow this. |
||||||
|
*/ |
||||||
|
enum pipe_debug_type |
||||||
|
{ |
||||||
|
PIPE_DEBUG_TYPE_OUT_OF_MEMORY = 1, |
||||||
|
PIPE_DEBUG_TYPE_ERROR, |
||||||
|
PIPE_DEBUG_TYPE_SHADER_INFO, |
||||||
|
PIPE_DEBUG_TYPE_PERF_INFO, |
||||||
|
PIPE_DEBUG_TYPE_INFO, |
||||||
|
PIPE_DEBUG_TYPE_FALLBACK, |
||||||
|
PIPE_DEBUG_TYPE_CONFORMANCE, |
||||||
|
}; |
||||||
|
|
||||||
|
#if !defined(alignof) && !defined(__cplusplus) |
||||||
|
#if __STDC_VERSION__ >= 201112L |
||||||
|
#define alignof(t) _Alignof(t) |
||||||
|
#elif defined(_MSC_VER) |
||||||
|
#define alignof(t) __alignof(t) |
||||||
|
#else |
||||||
|
#define alignof(t) __alignof__(t) |
||||||
|
#endif |
||||||
|
#endif |
||||||
|
|
||||||
|
/* Macros for static type-safety checking.
|
||||||
|
* |
||||||
|
* https://clang.llvm.org/docs/ThreadSafetyAnalysis.html
|
||||||
|
*/ |
||||||
|
|
||||||
|
#if __has_attribute(capability) |
||||||
|
typedef int __attribute__((capability("mutex"))) lock_cap_t; |
||||||
|
|
||||||
|
#define guarded_by(l) __attribute__((guarded_by(l))) |
||||||
|
#define acquire_cap(l) __attribute((acquire_capability(l), no_thread_safety_analysis)) |
||||||
|
#define release_cap(l) __attribute((release_capability(l), no_thread_safety_analysis)) |
||||||
|
#define assert_cap(l) __attribute((assert_capability(l), no_thread_safety_analysis)) |
||||||
|
#define requires_cap(l) __attribute((requires_capability(l))) |
||||||
|
#define disable_thread_safety_analysis __attribute((no_thread_safety_analysis)) |
||||||
|
|
||||||
|
#else |
||||||
|
|
||||||
|
typedef int lock_cap_t; |
||||||
|
|
||||||
|
#define guarded_by(l) |
||||||
|
#define acquire_cap(l) |
||||||
|
#define release_cap(l) |
||||||
|
#define assert_cap(l) |
||||||
|
#define requires_cap(l) |
||||||
|
#define disable_thread_safety_analysis |
||||||
|
|
||||||
|
#endif |
||||||
|
|
||||||
|
#endif /* UTIL_MACROS_H */ |
||||||
Loading…
Reference in new issue