shared_ptr.cpp.hpp

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#include "fl/stl/shared_ptr.h"
#include "fl/stl/noexcept.h"
 
namespace fl {
namespace detail {
 
// Out-of-line destructor definition to anchor the vtable to this translation unit.
ControlBlockBase::~ControlBlockBase() FL_NOEXCEPT = default;
 
// Reference count increment - must be out-of-line to prevent cross-binary vtable issues.
void ControlBlockBase::add_shared_ref() {
    if (shared_count != NO_TRACKING_VALUE) {
        ++shared_count;
    }
}
 
// Reference count decrement - must be out-of-line to prevent cross-binary vtable issues.
// Returns true if the reference count reached zero (object should be destroyed).
bool ControlBlockBase::remove_shared_ref() {
    if (shared_count == NO_TRACKING_VALUE) {
        return false;  // Never destroy in no-tracking mode
    }
    return (--shared_count == 0);
}
 
// Check if this control block is in no-tracking mode.
bool ControlBlockBase::is_no_tracking() const {
    return shared_count == NO_TRACKING_VALUE;
}
 
} // namespace detail
} // namespace fl