73b193aec2
Add a header-only implementation of Briggs & Torczon's fast small integer set data structure to flang/include/flang/Common, and use it in the runtime to manage a pool of Fortran unit numbers with recycling. This replaces the bit set previously used for that purpose. The set is initialized on demand with the negations of all the NEWUNIT= unit numbers that can be returned to any kind of integer variable. For programs that require more concurrently open NEWUNIT= unit numbers than the pool can hold, they are now allocated with a non-recycling counter. This allows as many open units as the operating system provides. Many of the top-line comments in flang/unittests/Runtime had the wrong path name. I noticed this while adding a unit test for the fast integer set data structure, and cleaned them up. Differential Revision: https://reviews.llvm.org/D120685
58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
//===-- flang/unittests/Runtime/tools.h -------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef FORTRAN_UNITTESTS_RUNTIME_TOOLS_H_
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#define FORTRAN_UNITTESTS_RUNTIME_TOOLS_H_
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#include "gtest/gtest.h"
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#include "flang/Runtime/allocatable.h"
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#include "flang/Runtime/cpp-type.h"
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#include "flang/Runtime/descriptor.h"
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#include "flang/Runtime/type-code.h"
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#include <cstdint>
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#include <cstring>
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#include <vector>
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namespace Fortran::runtime {
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template <typename A>
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static void StoreElement(void *p, const A &x, std::size_t bytes) {
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std::memcpy(p, &x, bytes);
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}
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template <typename CHAR>
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static void StoreElement(
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void *p, const std::basic_string<CHAR> &str, std::size_t bytes) {
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ASSERT_LE(bytes, sizeof(CHAR) * str.size());
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std::memcpy(p, str.data(), bytes);
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}
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template <TypeCategory CAT, int KIND, typename A>
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static OwningPtr<Descriptor> MakeArray(const std::vector<int> &shape,
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const std::vector<A> &data,
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std::size_t elemLen = CAT == TypeCategory::Complex ? 2 * KIND : KIND) {
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auto rank{static_cast<int>(shape.size())};
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auto result{Descriptor::Create(TypeCode{CAT, KIND}, elemLen, nullptr, rank,
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nullptr, CFI_attribute_allocatable)};
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for (int j{0}; j < rank; ++j) {
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result->GetDimension(j).SetBounds(1, shape[j]);
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}
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int stat{result->Allocate()};
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EXPECT_EQ(stat, 0) << stat;
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EXPECT_LE(data.size(), result->Elements());
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char *p{result->OffsetElement<char>()};
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for (A x : data) {
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StoreElement(p, x, elemLen);
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p += elemLen;
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}
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return result;
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}
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} // namespace Fortran::runtime
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#endif // FORTRAN_UNITTESTS_RUNTIME_TOOLS_H_
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