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Diffstat (limited to 'Userland/Libraries/LibC/assert.h')
| -rw-r--r-- | Userland/Libraries/LibC/assert.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/Userland/Libraries/LibC/assert.h b/Userland/Libraries/LibC/assert.h new file mode 100644 index 0000000000..055553514b --- /dev/null +++ b/Userland/Libraries/LibC/assert.h @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#pragma once + +#include <sys/cdefs.h> + +__BEGIN_DECLS + +#ifdef DEBUG +__attribute__((noreturn)) void __assertion_failed(const char* msg); +# define __stringify_helper(x) # x +# define __stringify(x) __stringify_helper(x) +# define assert(expr) \ + do { \ + if (__builtin_expect(!(expr), 0)) \ + __assertion_failed(#expr "\n" __FILE__ ":" __stringify(__LINE__)); \ + } while (0) +# define ASSERT_NOT_REACHED() assert(false) +#else +# define assert(expr) ((void)(0)) +# define ASSERT_NOT_REACHED() CRASH() +#endif + +#define CRASH() \ + do { \ + asm volatile("ud2"); \ + } while (0) +#define ASSERT assert +#define RELEASE_ASSERT assert +#define TODO ASSERT_NOT_REACHED + +__END_DECLS |