The fidlc
compiler automatically generates library zx
(internally) into //zircon/tools/fidl/lib/library_zx.cc.
You will find content similar to the following:
[Internal] library zx; using status = int32; using time = int64; using duration = int64; using koid = uint64; using vaddr = uint64; using paddr = uint64; using paddr32 = uint32; using gpaddr = uint64; using off = uint64; using procarg = uint32; const uint64 CHANNEL_MAX_MSG_BYTES = 65536; const uint64 CHANNEL_MAX_MSG_HANDLES = 64;
You can reference this library with the using
statement:
using zx;
The types generally correspond to Zircon System Types. For example, zx.duration
corresponds to zx_duration_t
.
The
CHANNEL_MAX_MSG_BYTES
andCHANNEL_MAX_MSG_HANDLES
are bound atfidlc
compile time (that is, when the compiler is compiled) and reflect the constants present at that time.