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git-subtree-dir: src/minisketch git-subtree-split: 89629eb2c7e262b39ba489b93b111760baded4b3
75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
/**********************************************************************
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* Copyright (c) 2018 Pieter Wuille, Greg Maxwell, Gleb Naumenko *
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* Distributed under the MIT software license, see the accompanying *
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* file LICENSE or http://www.opensource.org/licenses/mit-license.php.*
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**********************************************************************/
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#ifndef _MINISKETCH_UTIL_H_
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#define _MINISKETCH_UTIL_H_
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#ifdef MINISKETCH_VERIFY
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#include <stdio.h>
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#endif
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#if !defined(__GNUC_PREREQ)
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# if defined(__GNUC__)&&defined(__GNUC_MINOR__)
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# define __GNUC_PREREQ(_maj,_min) \
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((__GNUC__<<16)+__GNUC_MINOR__>=((_maj)<<16)+(_min))
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# else
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# define __GNUC_PREREQ(_maj,_min) 0
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# endif
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#endif
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#if __GNUC_PREREQ(3, 0)
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#define EXPECT(x,c) __builtin_expect((x),(c))
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#else
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#define EXPECT(x,c) (x)
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#endif
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/* Assertion macros */
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/**
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* Unconditional failure on condition failure.
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* Primarily used in testing harnesses.
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*/
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#define CHECK(cond) do { \
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if (EXPECT(!(cond), 0)) { \
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fprintf(stderr, "%s:%d: %s\n", __FILE__, __LINE__, "Check condition failed: " #cond); \
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abort(); \
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} \
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} while(0)
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/**
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* Check macro that does nothing in normal non-verify builds but crashes in verify builds.
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* This is used to test conditions at runtime that should always be true, but are either
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* expensive to test or in locations where returning on failure would be messy.
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*/
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#ifdef MINISKETCH_VERIFY
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#define CHECK_SAFE(cond) CHECK(cond)
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#else
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#define CHECK_SAFE(cond)
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#endif
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/**
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* Check a condition and return on failure in non-verify builds, crash in verify builds.
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* Used for inexpensive conditions which believed to be always true in locations where
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* a graceful exit is possible.
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*/
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#ifdef MINISKETCH_VERIFY
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#define CHECK_RETURN(cond, rvar) do { \
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if (EXPECT(!(cond), 0)) { \
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fprintf(stderr, "%s:%d: %s\n", __FILE__, __LINE__, "Check condition failed: " #cond); \
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abort(); \
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return rvar; /* Does nothing, but causes compile to warn on incorrect return types. */ \
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} \
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} while(0)
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#else
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#define CHECK_RETURN(cond, rvar) do { \
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if (EXPECT(!(cond), 0)) { \
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return rvar; \
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} \
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} while(0)
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#endif
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#endif
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