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).
+/* 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.
+ 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.
+ 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. */
+ 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;
/**
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 */
- int recv_ok :1; /* true if it is valid to recv() on the socket (false if it is a file) */
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. */
-
- unsigned long int buf_size; /* what to say to the OS. field here to remember it when accepting */
+ 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 */
void gras_trp_file_setup(gras_trp_plugin_t plug);
void gras_trp_sg_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
