HelenOS sources
IFACE_EXCHANGE_PARALLEL 98 abi/include/abi/ipc/interfaces.h FOURCC_COMPACT('v', 'f', 's', ' ') | IFACE_EXCHANGE_PARALLEL,
IFACE_EXCHANGE_PARALLEL 102 abi/include/abi/ipc/interfaces.h FOURCC_COMPACT('v', 'f', 's', 'd') | IFACE_EXCHANGE_PARALLEL | IFACE_MOD_CALLBACK,
IFACE_EXCHANGE_PARALLEL 116 abi/include/abi/ipc/interfaces.h FOURCC_COMPACT('h', 'o', 'u', 'n') | IFACE_EXCHANGE_PARALLEL,
IFACE_EXCHANGE_PARALLEL 124 abi/include/abi/ipc/interfaces.h FOURCC_COMPACT('d', 'v', 'd', 'v') | IFACE_EXCHANGE_PARALLEL,
IFACE_EXCHANGE_PARALLEL 166 abi/include/abi/ipc/interfaces.h FOURCC_COMPACT('b', 'l', 'd', 'v') | IFACE_EXCHANGE_PARALLEL | IFACE_MOD_CALLBACK,
IFACE_EXCHANGE_PARALLEL 168 abi/include/abi/ipc/interfaces.h FOURCC_COMPACT('a', 'p', 'c', 'm') | IFACE_EXCHANGE_PARALLEL | IFACE_MOD_CALLBACK,
IFACE_EXCHANGE_PARALLEL 172 abi/include/abi/ipc/interfaces.h FOURCC_COMPACT('u', 's', 'b', 'v') | IFACE_EXCHANGE_PARALLEL | IFACE_MOD_CALLBACK,
HelenOS homepage, sources at GitHub