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//===-- common.cpp ----------------------------------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "common.h"
#include "atomic_helpers.h"
#include "string_utils.h"
namespace scudo {
#if !defined(SCUDO_PAGE_SIZE)
uptr PageSizeCached = 0;
uptr PageSizeLogCached = 0;
// Must be defined in platform specific code.
uptr getPageSize();
// This must be called in the init path or there could be a race if multiple
// threads try to set the cached values.
uptr getPageSizeSlow() {
PageSizeCached = getPageSize();
CHECK_NE(PageSizeCached, 0);
PageSizeLogCached = getLog2(PageSizeCached);
return PageSizeCached;
}
#endif
} // namespace scudo
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