X-Git-Url: https://git.sesse.net/?p=cubemap;a=blobdiff_plain;f=server.h;h=2cb078e3fc418bdd6b47665bba31635b3af6e4e2;hp=f1cc7a0dbfc0d56116739ebccda95829d8cfe577;hb=b59fa7ce2d47f135ea027548cc89f937a5fa875b;hpb=eb33692c9edee93e0883cd9f980d48dc7e17d801

diff --git a/server.h b/server.h
index f1cc7a0..2cb078e 100644
--- a/server.h
+++ b/server.h
@@ -3,16 +3,28 @@
 
 #include <stdint.h>
 #include <pthread.h>
+#include <sys/epoll.h>
 #include <string>
 #include <map>
+#include <vector>
 
-#define NUM_SERVERS 4
 #define BACKLOG_SIZE 1048576
 #define EPOLL_MAX_EVENTS 8192
 #define EPOLL_TIMEOUT_MS 20
 #define MAX_CLIENT_REQUEST 16384
 
+class ClientProto;
+class CubemapStateProto;
+class StreamProto;
+
 struct Client {
+	Client() {}
+	Client(int sock);
+
+	// Serialization/deserialization.
+	Client(const ClientProto &serialized);
+	ClientProto serialize() const;
+
 	// The file descriptor associated with this socket.
 	int sock;
 
@@ -21,9 +33,9 @@ struct Client {
 
 	// The HTTP request, as sent by the client. If we are in READING_REQUEST,
 	// this might not be finished.
-	std::string client_request;
+	std::string request;
 
-	// What stream we're connecting to; parsed from client_request.
+	// What stream we're connecting to; parsed from <request>.
 	// Not relevant for READING_REQUEST.
 	std::string stream_id;
 
@@ -40,42 +52,62 @@ struct Client {
 };
 
 struct Stream {
+	Stream(const std::string &stream_id);
+	~Stream();
+
+	// Serialization/deserialization.
+	Stream(const StreamProto &serialized);
+	StreamProto serialize() const;
+
+	std::string stream_id;
+
 	// The HTTP response header, plus the video stream header (if any).
 	std::string header;
 
 	// The stream data itself, stored in a circular buffer.
-	char data[BACKLOG_SIZE];
+	char *data;
 
 	// How many bytes <data> contains. Can very well be larger than BACKLOG_SIZE,
 	// since the buffer wraps.
 	size_t data_size;
+
+private:
+	Stream(const Stream& other);
 };
 
 class Server {
 public:
 	Server();
+	~Server();
 
 	// Start a new thread that handles clients.
 	void run();
+
+	// Stop the thread.
+	void stop();
+
+	CubemapStateProto serialize() const;
+
 	void add_client(int sock);
+	void add_client_from_serialized(const ClientProto &client);
+
 	void add_stream(const std::string &stream_id);
+	void add_stream_from_serialized(const StreamProto &stream);
+
 	void set_header(const std::string &stream_id, const std::string &header);
 	void add_data(const std::string &stream_id, const char *data, size_t bytes);
 
 private:
-	void process_client(Client *client);
-
-	// Close a given client socket, and clean up after it.
-	void close_client(Client *client);
-
-	// Parse the HTTP request, construct the header, and set the client into
-	// the SENDING_HEADER state.
-	void parse_request(Client *client);
+	pthread_t worker_thread;
 
+	// All variables below this line are protected by the mutex.
 	pthread_mutex_t mutex;
 
+	// If the thread should stop or not.
+	bool should_stop;	
+
 	// Map from stream ID to stream.
-	std::map<std::string, Stream> streams;
+	std::map<std::string, Stream *> streams;
 
 	// Map from file descriptor to client.
 	std::map<int, Client> clients;
@@ -84,11 +116,39 @@ private:
 	int epoll_fd;
 	epoll_event events[EPOLL_MAX_EVENTS];
 
+	// Clients that are in SENDING_DATA, but that we don't listen on,
+	// because we currently don't have any data for them.
+	// See put_client_to_sleep() and wake_up_all_clients().
+	std::vector<int> sleeping_clients;
+
 	// Recover the this pointer, and call do_work().
 	static void *do_work_thunk(void *arg);
 
 	// The actual worker thread.
 	void do_work();
+
+	void process_client(Client *client);
+
+	// Close a given client socket, and clean up after it.
+	void close_client(Client *client);
+
+	// Parse the HTTP request.
+	void parse_request(Client *client);
+
+	// Construct the HTTP header, and set the client into
+	// the SENDING_HEADER state.
+	void construct_header(Client *client);
+
+	// Put client to sleep, since there is no more data for it; we will on
+	// longer listen on POLLOUT until we get more data. Also, it will be put
+	// in the list of clients to wake up when we do.
+	void put_client_to_sleep(Client *client);
+
+	// We have more data, so mark all clients that are sleeping as ready to go.
+	void wake_up_all_clients();
+
+	// TODO: This function should probably die.
+	Stream *find_stream(const std::string &stream_id);
 };
 
 #endif  // !defined(_SERVER_H)