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//===-- safestack_util.h --------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file contains utility code for SafeStack implementation.
//
//===----------------------------------------------------------------------===//
#ifndef SAFESTACK_UTIL_H
#define SAFESTACK_UTIL_H
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
namespace safestack {
#define SFS_CHECK(a) \
do { \
if (!(a)) { \
fprintf(stderr, "safestack CHECK failed: %s:%d %s\n", __FILE__, \
__LINE__, #a); \
abort(); \
}; \
} while (false)
inline size_t RoundUpTo(size_t size, size_t boundary) {
SFS_CHECK((boundary & (boundary - 1)) == 0);
return (size + boundary - 1) & ~(boundary - 1);
}
inline constexpr bool IsAligned(size_t a, size_t alignment) {
return (a & (alignment - 1)) == 0;
}
class MutexLock {
public:
explicit MutexLock(pthread_mutex_t &mutex) : mutex_(&mutex) {
pthread_mutex_lock(mutex_);
}
~MutexLock() { pthread_mutex_unlock(mutex_); }
private:
pthread_mutex_t *mutex_ = nullptr;
};
} // namespace safestack
#endif // SAFESTACK_UTIL_H
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