/** @brief Callback signal fired when a communication starts */
static simgrid::xbt::signal<void(kernel::resource::NetworkAction*, s4u::Host* src, s4u::Host* dst)> onCommunicate;
/** @brief Callback signal fired when a communication starts */
static simgrid::xbt::signal<void(kernel::resource::NetworkAction*, s4u::Host* src, s4u::Host* dst)> onCommunicate;