#include "gras/transport.h" /* rest of module interface */
#include "gras/Transport/transport_interface.h" /* semi-public API */
-#include "gras/Virtu/virtu_interface.h" /* socketset_get() */
+#include "gras/Virtu/virtu_interface.h" /* libdata management */
+
+extern int gras_trp_libdata_id; /* our libdata identifier */
+
+/* The function that select returned the last time we asked. We need this
+ because the TCP read are greedy and try to get as much data in their
+ buffer as possible (to avoid subsequent syscalls).
+ (measurement sockets are not buffered and thus not concerned).
+
+ So, we can get more than one message in one shoot. And when this happens,
+ we have to handle the same socket again afterward without select()ing at
+ all.
+
+ Then, this data is not a static of the TCP driver because we want to
+ zero it when it gets closed by the user. If not, we use an already freed
+ pointer, which is bad.
+
+ It gets tricky since gras_socket_close is part of the common API, not
+ only the RL one. */
+extern gras_socket_t _gras_lastly_selected_socket;
/**
* s_gras_socket:
int outgoing :1; /* true if we can write on this sock */
int accepting :1; /* true if master incoming sock in tcp */
int meas :1; /* true if this is an experiment socket instead of messaging */
-
- unsigned long int bufSize; /* what to say to the OS. field here to remember it when accepting */
+ int valid :1; /* false if a select returned that the peer quitted, forcing us to "close" the socket */
+ int moredata :1; /* TCP socket use a buffer and read operation get as much
+ data as possible. It is possible that several messages
+ are received in one shoot, and select won't catch them
+ afterward again.
+ This boolean indicates that this is the case, so that we
+ don't call select in that case. Note that measurement
+ sockets are not concerned since they use the TCP
+ interface directly, with no buffer. */
+
+ int recvd :1; /* true if the recvd_val field contains one byte of the stream (that we peek'ed to check the socket validity) */
+ char recvd_val; /* what we peeked from the socket, if any */
+
+ unsigned long int buf_size; /* what to say to the OS.
+ Field here to remember it when accepting */
int sd;
int port; /* port on this side */
int peer_port; /* port on the other side */
char *peer_name; /* hostname of the other side */
+ char *peer_proc; /* process on the other side */
void *data; /* plugin specific data */
typedef void (*gras_trp_setup_t)(gras_trp_plugin_t dst);
void gras_trp_tcp_setup(gras_trp_plugin_t plug);
+void gras_trp_iov_setup(gras_trp_plugin_t plug);
void gras_trp_file_setup(gras_trp_plugin_t plug);
void gras_trp_sg_setup(gras_trp_plugin_t plug);
-void gras_trp_buf_setup(gras_trp_plugin_t plug);
-/*
+/* FIXME: this should be solved by SIMIX
I'm tired of that shit. the select in SG has to create a socket to expeditor
manually do deal with the weirdness of the hostdata, themselves here to deal
*/
-void gras_trp_buf_init_sock(gras_socket_t sock);
-
-
-/* Data exchange over measurement sockets */ /* FIXME: KILLME */
-/*
-void gras_socket_meas_exchange(gras_socket_t peer,
- int sender,
- unsigned int timeout,
- unsigned long int expSize,
- unsigned long int msgSize);
-*/
-xbt_dynar_t gras_socketset_get(void); /* FIXME:KILLME */
+gras_socket_t gras_trp_buf_init_sock(gras_socket_t sock);
#endif /* GRAS_TRP_PRIVATE_H */