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#include "ObjectModel.h"
#include <algorithm>
#include <execution>
#include <iterator>
using ObjectModel = ceph::io_exerciser::ObjectModel;
ObjectModel::ObjectModel(const std::string& oid, uint64_t block_size, int seed) :
Model(oid, block_size), created(false)
{
rng.seed(seed);
}
int ObjectModel::get_seed(uint64_t offset) const
{
ceph_assert(offset < contents.size());
return contents[offset];
}
std::vector<int> ObjectModel::get_seed_offsets(int seed) const
{
std::vector<int> offsets;
for (size_t i = 0; i < contents.size(); i++)
{
if (contents[i] == seed)
{
offsets.push_back(i);
}
}
return offsets;
}
std::string ObjectModel::to_string(int mask) const
{
if (!created) {
return "Object does not exist";
}
std::string result = "{";
for (uint64_t i = 0; i < contents.size(); i++) {
if (i != 0) {
result += ",";
}
result += std::to_string(contents[i] & mask);
}
result += "}";
return result;
}
bool ObjectModel::readyForIoOp(IoOp& op)
{
return true;
}
void ObjectModel::applyIoOp(IoOp& op)
{
auto generate_random = [&rng = rng]() {
return rng();
};
switch (op.op) {
case OpType::BARRIER:
reads.clear();
writes.clear();
break;
case OpType::CREATE:
ceph_assert(!created);
ceph_assert(reads.empty());
ceph_assert(writes.empty());
created = true;
contents.resize(op.length1);
std::generate(std::execution::seq, contents.begin(), contents.end(),
generate_random);
break;
case OpType::REMOVE:
ceph_assert(created);
ceph_assert(reads.empty());
ceph_assert(writes.empty());
created = false;
contents.resize(0);
break;
case OpType::READ3:
ceph_assert(created);
ceph_assert(op.offset3 + op.length3 <= contents.size());
// Not allowed: read overlapping with parallel write
ceph_assert(!writes.intersects(op.offset3, op.length3));
reads.union_insert(op.offset3, op.length3);
[[fallthrough]];
case OpType::READ2:
ceph_assert(created);
ceph_assert(op.offset2 + op.length2 <= contents.size());
// Not allowed: read overlapping with parallel write
ceph_assert(!writes.intersects(op.offset2, op.length2));
reads.union_insert(op.offset2, op.length2);
[[fallthrough]];
case OpType::READ:
ceph_assert(created);
ceph_assert(op.offset1 + op.length1 <= contents.size());
// Not allowed: read overlapping with parallel write
ceph_assert(!writes.intersects(op.offset1, op.length1));
reads.union_insert(op.offset1, op.length1);
num_io++;
break;
case OpType::WRITE3:
ceph_assert(created);
// Not allowed: write overlapping with parallel read or write
ceph_assert(!reads.intersects(op.offset3, op.length3));
ceph_assert(!writes.intersects(op.offset3, op.length3));
writes.union_insert(op.offset3, op.length3);
ceph_assert(op.offset3 + op.length3 <= contents.size());
std::generate(std::execution::seq,
std::next(contents.begin(), op.offset3),
std::next(contents.begin(), op.offset3 + op.length3),
generate_random);
[[fallthrough]];
case OpType::WRITE2:
ceph_assert(created);
// Not allowed: write overlapping with parallel read or write
ceph_assert(!reads.intersects(op.offset2, op.length2));
ceph_assert(!writes.intersects(op.offset2, op.length2));
writes.union_insert(op.offset2, op.length2);
ceph_assert(op.offset2 + op.length2 <= contents.size());
std::generate(std::execution::seq,
std::next(contents.begin(), op.offset2),
std::next(contents.begin(), op.offset2 + op.length2),
generate_random);
[[fallthrough]];
case OpType::WRITE:
ceph_assert(created);
// Not allowed: write overlapping with parallel read or write
ceph_assert(!reads.intersects(op.offset1, op.length1));
ceph_assert(!writes.intersects(op.offset1, op.length1));
writes.union_insert(op.offset1, op.length1);
ceph_assert(op.offset1 + op.length1 <= contents.size());
std::generate(std::execution::seq,
std::next(contents.begin(), op.offset1),
std::next(contents.begin(), op.offset1 + op.length1),
generate_random);
num_io++;
break;
default:
break;
}
}
void ObjectModel::encode(ceph::buffer::list& bl) const {
ENCODE_START(1, 1, bl);
encode(created, bl);
if (created) {
encode(contents, bl);
}
ENCODE_FINISH(bl);
}
void ObjectModel::decode(ceph::buffer::list::const_iterator& bl) {
DECODE_START(1, bl);
DECODE_OLDEST(1);
decode(created, bl);
if (created) {
decode(contents, bl);
} else {
contents.resize(0);
}
DECODE_FINISH(bl);
}
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