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libipc-old/core/ipc.cr

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2018-10-04 12:57:05 +02:00
@[Link("ipc")]
lib LibIPC
struct Service
version : LibC::UInt
index : LibC::UInt
spath : LibC::Char[4096] # [PATH_MAX]
fd : LibC::Int
end
struct Client
version : LibC::UInt
index : LibC::UInt
fd : LibC::Int
end
struct Message
type : LibC::Char
length : LibC::UShort
payload : LibC::Char*
end
struct ClientArray
clients : Client**
size : LibC::Int
end
# FIXME: IPC.initialize:
# - throw exceptions on error.
# - Make most arguments optional.
fun ipc_server_init(argc : LibC::Int, argv : LibC::Char**, env : LibC::Char**, service : Service*, sname : LibC::Char*) : LibC::Int
# FIXME: IPC.(destroy?)
fun ipc_server_close(Service*) : LibC::Int
fun ipc_server_close_client(Client*) : LibC::Int
fun ipc_server_accept(Service*, Client*) : LibC::Int
fun ipc_server_read(Client*, Message*) : LibC::Int
fun ipc_server_write(Client*, Message*) : LibC::Int
fun ipc_server_select(ClientArray*, Service*, ClientArray*) : LibC::Int
fun ipc_application_connection(LibC::Int, LibC::Char**, LibC::Char**, Service*, LibC::Char*, LibC::Char*, LibC::UInt)
fun ipc_application_close(Service*)
fun ipc_application_read(Service*, Message*)
fun ipc_application_write(Service*, Message*)
end
class IPC::Service
# FIXME: getter only as long as proper bindings are unfinished
getter service = LibIPC::Service.new
def initialize(name : String)
if LibIPC.ipc_server_init(ARGV.size, ARGV.map(&.to_unsafe).to_unsafe, LibC.environ, pointerof(@service), name) < 0
# FIXME: throw exception.
puts "error: ipc_server_init < 0"
exit 1
end
end
def finalize
# FIXME: throw exception
if LibIPC.ipc_server_close(pointerof(@service)) < 0
puts "error: ipc_server_close < 0"
exit 1
end
end
end
args = ["lala", "--oh-noes"].map &.bytes.to_unsafe
service = IPC::Service.new "pongd"
client = LibIPC::Client.new
client_array = LibIPC::ClientArray.new
pp! client
struct_service = service.service
if LibIPC.ipc_server_accept(pointerof(struct_service), pointerof(client))
puts "error: ipc_server_accept < 0"
end
pp! client
p LibIPC.ipc_server_close_client pointerof(client)