static simgrid::xbt::signal<void(kernel::resource::NetworkAction*, s4u::Host* src, s4u::Host* dst)> on_communicate;
/** @brief Callback signal fired when a communication changes it state (ready/done/cancel) */
static simgrid::xbt::signal<void(kernel::resource::NetworkAction*, s4u::Host* src, s4u::Host* dst)> on_communicate;
/** @brief Callback signal fired when a communication changes it state (ready/done/cancel) */