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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/vespalib/util/memoryusage.h>
#include <cassert>
namespace vespalib::datastore::test {
/*
* Class representing expected memory stats in unit tests.
*/
struct MemStats
{
size_t _used;
size_t _hold;
size_t _dead;
MemStats() : _used(0), _hold(0), _dead(0) {}
MemStats(const vespalib::MemoryUsage &usage)
: _used(usage.usedBytes()),
_hold(usage.allocatedBytesOnHold()),
_dead(usage.deadBytes()) {}
MemStats &used(size_t val) { _used += val; return *this; }
MemStats &hold(size_t val) { _hold += val; return *this; }
MemStats &dead(size_t val) { _dead += val; return *this; }
MemStats &holdToDead(size_t val) {
decHold(val);
_dead += val;
return *this;
}
MemStats &decUsed(size_t val) {
assert(_used >= val);
_used -= val;
return *this;
}
MemStats &decHold(size_t val) {
assert(_hold >= val);
_hold -= val;
return *this;
}
};
}
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