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//===-- runtime/descriptor.cpp --------------------------------------------===//
//
// 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 "descriptor.h"
#include "flang/common/idioms.h"
#include <cassert>
#include <cstdlib>
namespace Fortran::runtime {
Descriptor::~Descriptor() {
if (raw_.attribute != CFI_attribute_pointer) {
Deallocate();
}
}
void Descriptor::Establish(TypeCode t, std::size_t elementBytes, void *p,
int rank, const SubscriptValue *extent, ISO::CFI_attribute_t attribute,
bool addendum) {
CHECK(ISO::CFI_establish(&raw_, p, attribute, t.raw(), elementBytes, rank,
extent) == CFI_SUCCESS);
raw_.f18Addendum = addendum;
DescriptorAddendum *a{Addendum()};
CHECK(addendum == (a != nullptr));
if (a) {
new (a) DescriptorAddendum{};
}
}
void Descriptor::Establish(TypeCategory c, int kind, void *p, int rank,
const SubscriptValue *extent, ISO::CFI_attribute_t attribute,
bool addendum) {
std::size_t elementBytes = kind;
if (c == TypeCategory::Complex) {
elementBytes *= 2;
}
CHECK(ISO::CFI_establish(&raw_, p, attribute, TypeCode(c, kind).raw(),
elementBytes, rank, extent) == CFI_SUCCESS);
raw_.f18Addendum = addendum;
DescriptorAddendum *a{Addendum()};
CHECK(addendum == (a != nullptr));
if (a) {
new (a) DescriptorAddendum{};
}
}
void Descriptor::Establish(const DerivedType &dt, void *p, int rank,
const SubscriptValue *extent, ISO::CFI_attribute_t attribute) {
CHECK(ISO::CFI_establish(&raw_, p, attribute, CFI_type_struct,
dt.SizeInBytes(), rank, extent) == CFI_SUCCESS);
raw_.f18Addendum = true;
DescriptorAddendum *a{Addendum()};
CHECK(a);
new (a) DescriptorAddendum{&dt};
}
std::unique_ptr<Descriptor> Descriptor::Create(TypeCode t,
std::size_t elementBytes, void *p, int rank, const SubscriptValue *extent,
ISO::CFI_attribute_t attribute) {
std::size_t bytes{SizeInBytes(rank, true)};
Descriptor *result{reinterpret_cast<Descriptor *>(new char[bytes])};
CHECK(result);
result->Establish(t, elementBytes, p, rank, extent, attribute, true);
return std::unique_ptr<Descriptor>{result};
}
std::unique_ptr<Descriptor> Descriptor::Create(TypeCategory c, int kind,
void *p, int rank, const SubscriptValue *extent,
ISO::CFI_attribute_t attribute) {
std::size_t bytes{SizeInBytes(rank, true)};
Descriptor *result{reinterpret_cast<Descriptor *>(new char[bytes])};
CHECK(result);
result->Establish(c, kind, p, rank, extent, attribute, true);
return std::unique_ptr<Descriptor>{result};
}
std::unique_ptr<Descriptor> Descriptor::Create(const DerivedType &dt, void *p,
int rank, const SubscriptValue *extent, ISO::CFI_attribute_t attribute) {
std::size_t bytes{SizeInBytes(rank, true, dt.lenParameters())};
Descriptor *result{reinterpret_cast<Descriptor *>(new char[bytes])};
CHECK(result);
result->Establish(dt, p, rank, extent, attribute);
return std::unique_ptr<Descriptor>{result};
}
std::size_t Descriptor::SizeInBytes() const {
const DescriptorAddendum *addendum{Addendum()};
return sizeof *this - sizeof(Dimension) + raw_.rank * sizeof(Dimension) +
(addendum ? addendum->SizeInBytes() : 0);
}
std::size_t Descriptor::Elements() const {
int n{rank()};
std::size_t elements{1};
for (int j{0}; j < n; ++j) {
elements *= GetDimension(j).Extent();
}
return elements;
}
int Descriptor::Allocate(
const SubscriptValue lb[], const SubscriptValue ub[], std::size_t charLen) {
int result{ISO::CFI_allocate(&raw_, lb, ub, charLen)};
if (result == CFI_SUCCESS) {
// TODO: derived type initialization
}
return result;
}
int Descriptor::Deallocate(bool finalize) {
if (raw_.base_addr) {
Destroy(static_cast<char *>(raw_.base_addr), finalize);
}
return ISO::CFI_deallocate(&raw_);
}
void Descriptor::Destroy(char *data, bool finalize) const {
if (data) {
if (const DescriptorAddendum * addendum{Addendum()}) {
if (addendum->flags() & DescriptorAddendum::DoNotFinalize) {
finalize = false;
}
if (const DerivedType * dt{addendum->derivedType()}) {
std::size_t elements{Elements()};
std::size_t elementBytes{ElementBytes()};
for (std::size_t j{0}; j < elements; ++j) {
dt->Destroy(data + j * elementBytes, finalize);
}
}
}
}
}
void Descriptor::Check() const {
// TODO
}
std::ostream &Descriptor::Dump(std::ostream &o) const {
o << "Descriptor @ 0x" << std::hex << reinterpret_cast<std::intptr_t>(this)
<< std::dec << ":\n";
o << " base_addr 0x" << std::hex
<< reinterpret_cast<std::intptr_t>(raw_.base_addr) << std::dec << '\n';
o << " elem_len " << raw_.elem_len << '\n';
o << " version " << raw_.version
<< (raw_.version == CFI_VERSION ? "(ok)" : "BAD!") << '\n';
o << " rank " << static_cast<int>(raw_.rank) << '\n';
o << " type " << static_cast<int>(raw_.type) << '\n';
o << " attribute " << static_cast<int>(raw_.attribute) << '\n';
o << " addendum? " << static_cast<bool>(raw_.f18Addendum) << '\n';
for (int j{0}; j < raw_.rank; ++j) {
o << " dim[" << j << "] lower_bound " << raw_.dim[j].lower_bound << '\n';
o << " extent " << raw_.dim[j].extent << '\n';
o << " sm " << raw_.dim[j].sm << '\n';
}
if (const DescriptorAddendum * addendum{Addendum()}) {
addendum->Dump(o);
}
return o;
}
std::size_t DescriptorAddendum::SizeInBytes() const {
return SizeInBytes(LenParameters());
}
std::ostream &DescriptorAddendum::Dump(std::ostream &o) const {
o << " derivedType @ 0x" << std::hex
<< reinterpret_cast<std::intptr_t>(derivedType_) << std::dec << '\n';
o << " flags " << flags_ << '\n';
// TODO: LEN parameter values
return o;
}
}
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