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47 lines
1.1 KiB
47 lines
1.1 KiB
2 years ago
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#include "drake/solvers/solver_id.h"
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#include <atomic>
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#include <utility>
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#include "drake/common/never_destroyed.h"
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#include "drake/common/text_logging.h"
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namespace drake {
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namespace solvers {
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namespace {
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int get_next_id() {
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// Note that id 0 is reserved for the moved-from SolverId. As a result, we
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// have an invariant "get_next_id() > 0".
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static never_destroyed<std::atomic<int>> next_id{1};
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return next_id.access()++;
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}
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} // namespace
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SolverId::SolverId(std::string name)
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: id_{get_next_id()}, name_{std::move(name)} {
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if (name_.length() > 15) {
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static const logging::Warn log_once(
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"The SolverId(name='{}') exceeds the recommended name length of 15.",
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name_);
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}
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}
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bool operator==(const SolverId& a, const SolverId& b) {
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return a.id_ == b.id_;
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}
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bool operator!=(const SolverId& a, const SolverId& b) {
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return a.id_ != b.id_;
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}
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std::ostream& operator<<(std::ostream& os, const SolverId& self) {
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// N.B. The ID is _not_ exposed to callers.
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os << self.name();
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return os;
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}
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} // namespace solvers
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} // namespace drake
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