Method garbage_collect

modules/render/renderer/src/shader_map.cpp:208–239

}

void ShaderMapImpl::garbage_collect(uint64_t critical_frame) SKR_NOEXCEPT
{
    // erase request when exit this scope
    // SKR_DEFER({factory->mShaderTasks.erase(identifier);});
    for (auto it = mShaderMap.begin(); it != mShaderMap.end();)
    {
        auto status = skr_atomicu32_load_relaxed(&it->second->shader_status);
        if (status == SKR_SHADER_MAP_SHADER_STATUS_INSTALLED)
        {
            mShaderTasks.erase(it->first);
        }

        if (skr_atomicu32_load_relaxed(&it->second->rc) == 0 && 
            skr_atomicu64_load_relaxed(&it->second->frame) < critical_frame)
        {
            if (mShaderTasks.find(it->first) != mShaderTasks.end())
            {
                // shader is still loading, skip & wait for it to finish
                // TODO: cancel shader loading
                ++it;
            }
            else
            {
                it = mShaderMap.erase(it);
            }
        }
        else
        {
            ++it;
        }
    }
}
} // namespace skr

skr_shader_map_id skr_shader_map_t::Create(const struct skr_shader_map_root_t* desc) SKR_NOEXCEPT