Sum of GetMemoryUsage of all vSendMsg entries.
Declared in <net.h>
[[guarded_by(0x7fb96f08de78), guarded_by(0x7fb96f19d298), guarded_by(0x7fb96713b548), guarded_by(0x7fb96b052b88), guarded_by(0x7fb95ed2b7a8), guarded_by(0x7fb96c8ad848), guarded_by(0x7fb95fd9a008), guarded_by(0x7fb94c2758c8), guarded_by(0x7fb966e249b8), guarded_by(0x7fb97a56bcf8), guarded_by(0x7fb96e77deb8)]]
size_t m_send_memusage = {0};