Obsolete/libipc-old
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Messages can be received.

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This commit is contained in:
Philippe Pittoli 2022-12-25 06:26:38 +01:00
parent 9f214180a7
commit 6819de1da5
4 changed files with 48 additions and 30 deletions
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45
zig-impl/src/context.zig
View File

@ -165,16 +165,28 @@ pub const Context = struct {
return error.IndexOutOfBounds;
}
print("read index {}\n", .{index});
return self.read_fd(self.pollfd.items[index].fd);
}
pub fn read_fd (self: *Self, fd: i32) !Message {
print("read fd {}\n", .{fd});
var buffer: [2000000]u8 = undefined; // TODO: FIXME??
// TODO: read the actual content.
var payload = "hello!!";
var origin: i32 = undefined;
// TODO: this is a problem from the network API in Zig,
// servers and clients are different, they aren't just fds.
// Maybe there is something to change in the API.
if (self.connections.items[index].t == .IPC) {
var client = self.connections.items[index].client
orelse return error.NoClientHere;
var stream: net.Stream = client.stream;
origin = stream.handle;
_ = try stream.read(buffer[0..]);
}
else if (self.connections.items[index].t == .SERVER) {
return error.messageOnServer;
}
var m = Message.init(fd, Message.Type.DATA, self.allocator, payload);
// var m = try self.allocator.create(Message);
// m.* = try Message.read(buffer[0..], self.allocator);
var m = try Message.read(buffer[0..], self.allocator);
m.fd = origin;
return m;
}
@ -242,22 +254,24 @@ pub const Context = struct {
// SERVER = new connection
if (self.connections.items[i].t == .SERVER) {
try self.accept_new_client(&current_event, i);
return current_event;
}
// SWITCHED = send message to the right dest (or drop the switch)
else if (self.connections.items[i].t == .SWITCHED) {
// TODO: send message to SWITCH dest
// TODO: handle_switched_message
current_event = Event.init(Event.Type.SWITCH, i, fd.fd, null);
return Event.init(Event.Type.SWITCH, i, fd.fd, null);
}
// EXTERNAL = user handles IO
else if (self.connections.items[i].t == .EXTERNAL) {
current_event = Event.init(Event.Type.EXTERNAL, i, fd.fd, null);
return Event.init(Event.Type.EXTERNAL, i, fd.fd, null);
}
// otherwise = new message or disconnection
else {
// TODO: handle incoming message
// TODO: handle_new_message
current_event = Event.init(Event.Type.MESSAGE, i, fd.fd, null);
var m = try self.read(i);
return Event.init(Event.Type.MESSAGE, i, fd.fd, m);
}
}
@ -268,12 +282,12 @@ pub const Context = struct {
// SWITCHED = write message for its switch buddy (callbacks)
if (self.connections.items[i].t == .SWITCHED) {
// TODO: handle_writing_switched_message
current_event = Event.init(Event.Type.SWITCH, i, fd.fd, null);
return Event.init(Event.Type.SWITCH, i, fd.fd, null);
}
else {
// otherwise = write message for the msg.fd
// TODO: handle_writing_message
current_event = Event.init(Event.Type.TX, i, fd.fd, null);
return Event.init(Event.Type.TX, i, fd.fd, null);
}
}
// .revent is POLLHUP
@ -281,11 +295,12 @@ pub const Context = struct {
// handle disconnection
current_event = Event.init(Event.Type.DISCONNECTION, i, fd.fd, null);
try self.close(i);
return current_event;
}
// if fd revent is POLLERR or POLLNVAL
if ((fd.revents & std.os.linux.POLL.HUP > 0) or
(fd.revents & std.os.linux.POLL.HUP > 0)) {
current_event = Event.init(Event.Type.ERROR, i, fd.fd, null);
if ((fd.revents & std.os.linux.POLL.HUP > 0) or
(fd.revents & std.os.linux.POLL.NVAL > 0)) {
return Event.init(Event.Type.ERROR, i, fd.fd, null);
}
}

6
zig-impl/src/event.zig
View File

@ -49,15 +49,15 @@ pub const Event = struct {
t: Event.Type,
index: usize,
origin: i32, // socket fd
m: ?*Message, // message pointer
m: ?Message, // message
const Self = @This();
pub fn init(t: Event.Type, index: usize, origin: i32, m: ?*Message) Self {
pub fn init(t: Event.Type, index: usize, origin: i32, m: ?Message) Self {
return Self { .t = t, .index = index, .origin = origin, .m = m, };
}
pub fn set(self: *Self, t: Event.Type, index: usize, origin: i32, m: ?*Message) void {
pub fn set(self: *Self, t: Event.Type, index: usize, origin: i32, m: ?Message) void {
self.t = t;
self.index = index;
self.origin = origin;

19
zig-impl/src/main.zig
View File

@ -60,7 +60,6 @@ fn create_service() !void {
switch (some_event.t) {
.CONNECTION => {
print("New connection: {}!\n", .{some_event});
break;
},
.TIMER => {
print("Timer! ({})\n", .{count_down});
@ -71,27 +70,31 @@ fn create_service() !void {
}
},
.EXTERNAL => {
print("Message received from a non IPC socket.", .{});
print("Message received from a non IPC socket.\n", .{});
break;
},
.SWITCH => {
print("Message to send to a corresponding fd.", .{});
print("Message to send to a corresponding fd.\n", .{});
break;
},
.DISCONNECTION => {
print("User disconnected.", .{});
print("User disconnected.\n", .{});
break;
},
.MESSAGE => {
print("New message.", .{});
print("New message. {}\n", .{some_event});
if (some_event.m) |m| {
print("message: {}\n", .{m});
m.deinit();
}
break;
},
.LOOKUP => {
print("Client asking for a service through ipcd.", .{});
print("Client asking for a service through ipcd.\n", .{});
break;
},
.TX => {
print("Message sent.", .{});
print("Message sent.\n", .{});
break;
},
.NOT_SET => {
@ -99,7 +102,7 @@ fn create_service() !void {
break;
},
.ERROR => {
print("A problem occured.\n", .{});
print("A problem occured, event: {}\n", .{some_event});
break;
},
}

8
zig-impl/src/message.zig
View File

@ -18,7 +18,7 @@ pub const Message = struct {
};
t: Message.Type, // Internal message type.
fd: usize, // File descriptor concerned about this message.
fd: i32, // File descriptor concerned about this message.
payload: []const u8,
allocator: std.mem.Allocator, // Memory allocator.
@ -26,7 +26,7 @@ pub const Message = struct {
const Self = @This();
// TODO
//pub fn initFromConnection(fd: usize) Self {
//pub fn initFromConnection(fd: i32) Self {
// return Self{
// .t = Message.Type.ERROR,
// .fd = fd,
@ -34,7 +34,7 @@ pub const Message = struct {
// };
//}
pub fn init(fd: usize, t: Message.Type
pub fn init(fd: i32, t: Message.Type
, allocator: std.mem.Allocator
, payload: []const u8) !Self {
return Message { .fd = fd, .t = t
@ -42,7 +42,7 @@ pub const Message = struct {
, .payload = try allocator.dupe(u8, payload) };
}
pub fn deinit(self: *Self) void {
pub fn deinit(self: Self) void {
self.allocator.free(self.payload);
}