--- /dev/null
+/* $Id$ */
+
+/* buf trp (transport) - buffered transport using the TCP one */
+
+/* Copyright (c) 2004 Martin Quinson. All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include <stdlib.h>
+#include <string.h> /* memset */
+
+#include "portable.h"
+#include "xbt/misc.h"
+#include "xbt/sysdep.h"
+#include "xbt/ex.h"
+#include "transport_private.h"
+
+/* FIXME maybe READV is sometime a good thing? */
+#undef HAVE_READV
+
+#ifdef HAVE_READV
+#include <sys/uio.h>
+#endif
+
+#ifndef MIN
+#define MIN(a,b) ((a)<(b)?(a):(b))
+#endif
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_trp_tcp,gras_trp,
+ "TCP buffered transport");
+
+/***
+ *** Specific socket part
+ ***/
+
+typedef enum { buffering_buf, buffering_iov } buffering_kind;
+
+typedef struct {
+ int size;
+ char *data;
+ int pos; /* for receive; not exchanged over the net */
+} gras_trp_buf_t;
+
+
+struct gras_trp_bufdata_{
+ int buffsize;
+ gras_trp_buf_t in_buf;
+ gras_trp_buf_t out_buf;
+
+#ifdef HAVE_READV
+ xbt_dynar_t in_buf_v;
+ xbt_dynar_t out_buf_v;
+#endif
+
+ buffering_kind in;
+ buffering_kind out;
+};
+
+
+/*****************************/
+/****[ SOCKET MANAGEMENT ]****/
+/*****************************/
+/* we exchange port number on client side on socket creation,
+ so we need to be able to talk right now. */
+static XBT_INLINE void gras_trp_tcp_send(gras_socket_t sock, const char *data,
+ unsigned long int size);
+static int gras_trp_tcp_recv(gras_socket_t sock, char *data,
+ unsigned long int size);
+
+
+static int _gras_tcp_proto_number(void);
+
+static XBT_INLINE void gras_trp_sock_socket_client(gras_trp_plugin_t ignored,
+ gras_socket_t sock){
+
+ struct sockaddr_in addr;
+ struct hostent *he;
+ struct in_addr *haddr;
+ int size = sock->buf_size;
+ uint32_t myport = htonl(((gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id))->myport);
+
+ sock->incoming = 1; /* TCP sockets are duplex'ed */
+
+ sock->sd = socket (AF_INET, SOCK_STREAM, 0);
+
+ if (sock->sd < 0) {
+ THROW1(system_error,0, "Failed to create socket: %s", sock_errstr(sock_errno));
+ }
+
+ if (setsockopt(sock->sd, SOL_SOCKET, SO_RCVBUF, (char *)&size, sizeof(size)) ||
+ setsockopt(sock->sd, SOL_SOCKET, SO_SNDBUF, (char *)&size, sizeof(size))) {
+ WARN1("setsockopt failed, cannot set buffer size: %s",sock_errstr(sock_errno));
+ }
+
+ he = gethostbyname (sock->peer_name);
+ if (he == NULL) {
+ THROW2(system_error,0, "Failed to lookup hostname %s: %s",
+ sock->peer_name, sock_errstr(sock_errno));
+ }
+
+ haddr = ((struct in_addr *) (he->h_addr_list)[0]);
+
+ memset(&addr, 0, sizeof(struct sockaddr_in));
+ memcpy (&addr.sin_addr, haddr, sizeof(struct in_addr));
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons (sock->peer_port);
+
+ if (connect (sock->sd, (struct sockaddr*) &addr, sizeof (addr)) < 0) {
+ tcp_close(sock->sd);
+ THROW3(system_error,0,
+ "Failed to connect socket to %s:%d (%s)",
+ sock->peer_name, sock->peer_port, sock_errstr(sock_errno));
+ }
+
+ gras_trp_tcp_send(sock,(char*)&myport,sizeof(uint32_t));
+ DEBUG1("peerport sent to %d", sock->peer_port);
+
+ VERB4("Connect to %s:%d (sd=%d, port %d here)",
+ sock->peer_name, sock->peer_port, sock->sd, sock->port);
+}
+
+/**
+ * gras_trp_sock_socket_server:
+ *
+ * Open a socket used to receive messages.
+ */
+static XBT_INLINE void gras_trp_sock_socket_server(gras_trp_plugin_t ignored,
+ gras_socket_t sock){
+ int size = sock->buf_size;
+ int on = 1;
+ struct sockaddr_in server;
+
+ sock->outgoing = 1; /* TCP => duplex mode */
+
+ server.sin_port = htons((u_short)sock->port);
+ server.sin_addr.s_addr = INADDR_ANY;
+ server.sin_family = AF_INET;
+ if((sock->sd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
+ THROW1(system_error,0,"Socket allocation failed: %s", sock_errstr(sock_errno));
+
+ if (setsockopt(sock->sd, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)))
+ THROW1(system_error,0,"setsockopt failed, cannot condition the socket: %s",
+ sock_errstr(sock_errno));
+
+ if (setsockopt(sock->sd, SOL_SOCKET, SO_RCVBUF, (char *)&size, sizeof(size)) ||
+ setsockopt(sock->sd, SOL_SOCKET, SO_SNDBUF, (char *)&size, sizeof(size))) {
+ WARN1("setsockopt failed, cannot set buffer size: %s",
+ sock_errstr(sock_errno));
+ }
+
+ if (bind(sock->sd, (struct sockaddr *)&server, sizeof(server)) == -1) {
+ tcp_close(sock->sd);
+ THROW2(system_error,0,"Cannot bind to port %d: %s",sock->port, sock_errstr(sock_errno));
+ }
+
+ DEBUG2("Listen on port %d (sd=%d)",sock->port, sock->sd);
+ if (listen(sock->sd, 5) < 0) {
+ tcp_close(sock->sd);
+ THROW2(system_error,0,"Cannot listen on port %d: %s",sock->port,sock_errstr(sock_errno));
+ }
+
+ VERB2("Openned a server socket on port %d (sd=%d)",sock->port,sock->sd);
+}
+
+static gras_socket_t gras_trp_sock_socket_accept(gras_socket_t sock) {
+ gras_socket_t res;
+
+ struct sockaddr_in peer_in;
+ socklen_t peer_in_len = sizeof(peer_in);
+
+ int sd;
+ int tmp_errno;
+ int size;
+
+ int i = 1;
+ socklen_t s = sizeof(int);
+
+ uint32_t hisport;
+
+ XBT_IN;
+ gras_trp_socket_new(1,&res);
+
+ sd = accept(sock->sd, (struct sockaddr *)&peer_in, &peer_in_len);
+ tmp_errno = sock_errno;
+
+ if (sd == -1) {
+ gras_socket_close(sock);
+ THROW1(system_error,0,
+ "Accept failed (%s). Droping server socket.", sock_errstr(tmp_errno));
+ }
+
+ if (setsockopt(sd, SOL_SOCKET, SO_KEEPALIVE, (char *)&i, s)
+ || setsockopt(sd, _gras_tcp_proto_number(), TCP_NODELAY, (char *)&i, s))
+ THROW1(system_error,0,"setsockopt failed, cannot condition the socket: %s",
+ sock_errstr(tmp_errno));
+
+ res->buf_size = sock->buf_size;
+ size = sock->buf_size;
+ if (setsockopt(sd, SOL_SOCKET, SO_RCVBUF, (char *)&size, sizeof(size))
+ || setsockopt(sd, SOL_SOCKET, SO_SNDBUF, (char *)&size, sizeof(size)))
+ WARN1("setsockopt failed, cannot set buffer size: %s", sock_errstr(tmp_errno));
+
+ res->plugin = sock->plugin;
+ res->incoming = sock->incoming;
+ res->outgoing = sock->outgoing;
+ res->accepting = 0;
+ res->sd = sd;
+ res->port = -1;
+
+ gras_trp_tcp_recv(res,(char*)&hisport,sizeof(hisport));
+ res->peer_port = ntohl(hisport);
+ DEBUG1("peerport %d received",res->peer_port);
+
+ /* FIXME: Lock to protect inet_ntoa */
+ if (((struct sockaddr *)&peer_in)->sa_family != AF_INET) {
+ res->peer_name = (char*)strdup("unknown");
+ } else {
+ struct in_addr addrAsInAddr;
+ char *tmp;
+
+ addrAsInAddr.s_addr = peer_in.sin_addr.s_addr;
+
+ tmp = inet_ntoa(addrAsInAddr);
+ if (tmp != NULL) {
+ res->peer_name = (char*)strdup(tmp);
+ } else {
+ res->peer_name = (char*)strdup("unknown");
+ }
+ }
+
+ VERB3("Accepted from %s:%d (sd=%d)", res->peer_name,res->peer_port,sd);
+
+ XBT_OUT;
+ return res;
+}
+
+static void gras_trp_sock_socket_close(gras_socket_t sock){
+
+ if (!sock) return; /* close only once */
+
+ VERB1("close tcp connection %d", sock->sd);
+
+ /* FIXME: no pipe in GRAS so far
+ if(!FD_ISSET(sd, &connectedPipes)) {
+ if(shutdown(sd, 2) < 0) {
+ GetNWSLock(&lock);
+ tmp_errno = errno;
+ ReleaseNWSLock(&lock);
+
+ / * The other side may have beaten us to the reset. * /
+ if ((tmp_errno!=ENOTCONN) && (tmp_errno!=ECONNRESET)) {
+ WARN1("CloseSocket: shutdown error %d\n", tmp_errno);
+ }
+ }
+ } */
+
+
+ /* close the socket */
+ if(tcp_close(sock->sd) < 0) {
+ WARN3("error while closing tcp socket %d: %d (%s)\n",
+ sock->sd, sock_errno, sock_errstr(sock_errno));
+ }
+
+}
+/************************************/
+/****[ end of SOCKET MANAGEMENT ]****/
+/************************************/
+
+
+/************************************/
+/****[ UNBUFFERED DATA EXCHANGE ]****/
+/************************************/
+/* Temptation to merge this with file data exchange is great,
+ but doesn't work on BillWare (see tcp_write() in portable.h) */
+static XBT_INLINE void gras_trp_tcp_send(gras_socket_t sock,
+ const char *data,
+ unsigned long int size) {
+
+ while (size) {
+ int status = 0;
+
+ status = tcp_write(sock->sd, data, (size_t)size);
+ DEBUG3("write(%d, %p, %ld);", sock->sd, data, size);
+
+ if (status < 0) {
+#ifdef EWOULDBLOCK
+ if (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)
+#else
+ if (errno == EINTR || errno == EAGAIN)
+#endif
+ continue;
+
+ THROW4(system_error,0,"write(%d,%p,%ld) failed: %s",
+ sock->sd, data, size,
+ sock_errstr(sock_errno));
+ }
+
+ if (status) {
+ size -= status;
+ data += status;
+ } else {
+ THROW1(system_error,0,"file descriptor closed (%s)",
+ sock_errstr(sock_errno));
+ }
+ }
+}
+static XBT_INLINE int
+gras_trp_tcp_recv_withbuffer(gras_socket_t sock,
+ char *data,
+ unsigned long int size,
+ unsigned long int bufsize) {
+
+ int got = 0;
+
+ while (size>got) {
+ int status = 0;
+
+ DEBUG5("read(%d, %p, %ld) got %d so far (%s)",
+ sock->sd, data+got, bufsize, got,
+ hexa_str((unsigned char*)data,got,0));
+ status = tcp_read(sock->sd, data+got, (size_t)bufsize);
+
+ if (status < 0) {
+ THROW7(system_error,0,"read(%d,%p,%d) from %s:%d failed: %s; got %d so far",
+ sock->sd, data+got, (int)size,
+ gras_socket_peer_name(sock),gras_socket_peer_port(sock),
+ sock_errstr(sock_errno),
+ got);
+ }
+ DEBUG2("Got %d more bytes (%s)",status,hexa_str((unsigned char*)data+got,status,0));
+
+ if (status) {
+ bufsize -= status;
+ got += status;
+ } else {
+ THROW1(system_error,0,"Socket closed by remote side (got %d bytes before this)",
+ got);
+ }
+ }
+
+ return got;
+}
+
+static int gras_trp_tcp_recv(gras_socket_t sock,
+ char *data,
+ unsigned long int size) {
+ return gras_trp_tcp_recv_withbuffer(sock,data,size,size);
+
+}
+/*******************************************/
+/****[ end of UNBUFFERED DATA EXCHANGE ]****/
+/*******************************************/
+
+/**********************************/
+/****[ BUFFERED DATA EXCHANGE ]****/
+/**********************************/
+
+/* Make sure the data is sent */
+static void
+gras_trp_bufiov_flush(gras_socket_t sock) {
+#ifdef HAVE_READV
+ xbt_dynar_t vect;
+ int size;
+#endif
+ gras_trp_bufdata_t *data=sock->bufdata;
+ XBT_IN;
+
+ DEBUG0("Flush");
+ if (data->out == buffering_buf) {
+ if (XBT_LOG_ISENABLED(gras_trp_tcp,xbt_log_priority_debug))
+ hexa_print("chunk to send ",
+ (unsigned char *) data->out_buf.data,data->out_buf.size);
+ if ((data->out_buf.size - data->out_buf.pos) != 0) {
+ DEBUG3("Send the chunk (size=%d) to %s:%d",data->out_buf.size,
+ gras_socket_peer_name(sock),gras_socket_peer_port(sock));
+ gras_trp_tcp_send(sock, data->out_buf.data, data->out_buf.size);
+ VERB1("Chunk sent (size=%d)",data->out_buf.size);
+ data->out_buf.size = 0;
+ }
+ }
+
+#ifdef HAVE_READV
+ if (data->out == buffering_iov) {
+ DEBUG0("Flush out iov");
+ vect = sock->bufdata->out_buf_v;
+ if ((size = xbt_dynar_length(vect))) {
+ DEBUG1("Flush %d chunks out of this socket",size);
+ writev(sock->sd,xbt_dynar_get_ptr(vect,0),size);
+ xbt_dynar_reset(vect);
+ }
+ data->out_buf.size = 0; /* reset the buffer containing non-stable data */
+ }
+
+ if (data->in == buffering_iov) {
+ DEBUG0("Flush in iov");
+ vect = sock->bufdata->in_buf_v;
+ if ((size = xbt_dynar_length(vect))) {
+ DEBUG1("Get %d chunks from of this socket",size);
+ readv(sock->sd,xbt_dynar_get_ptr(vect,0),size);
+ xbt_dynar_reset(vect);
+ }
+ }
+#endif
+}
+static void
+gras_trp_buf_send(gras_socket_t sock,
+ const char *chunk,
+ unsigned long int size,
+ int stable_ignored) {
+
+ gras_trp_bufdata_t *data=(gras_trp_bufdata_t*)sock->bufdata;
+ int chunk_pos=0;
+
+ XBT_IN;
+
+ while (chunk_pos < size) {
+ /* size of the chunk to receive in that shot */
+ long int thissize = min(size-chunk_pos,data->buffsize-data->out_buf.size);
+ DEBUG4("Set the chars %d..%ld into the buffer; size=%ld, ctn=(%s)",
+ (int)data->out_buf.size,
+ ((int)data->out_buf.size) + thissize -1,
+ size,
+ hexa_str((unsigned char*)chunk,thissize,0));
+
+ memcpy(data->out_buf.data + data->out_buf.size, chunk + chunk_pos, thissize);
+
+ data->out_buf.size += thissize;
+ chunk_pos += thissize;
+ DEBUG4("New pos = %d; Still to send = %ld of %ld; ctn sofar=(%s)",
+ data->out_buf.size,size-chunk_pos,size,hexa_str((unsigned char*)chunk,chunk_pos,0));
+
+ if (data->out_buf.size == data->buffsize) /* out of space. Flush it */
+ gras_trp_bufiov_flush(sock);
+ }
+
+ XBT_OUT;
+}
+
+static int
+gras_trp_buf_recv(gras_socket_t sock,
+ char *chunk,
+ unsigned long int size) {
+
+ gras_trp_bufdata_t *data=sock->bufdata;
+ long int chunk_pos = 0;
+
+ XBT_IN;
+
+ while (chunk_pos < size) {
+ /* size of the chunk to receive in that shot */
+ long int thissize;
+
+ if (data->in_buf.size == data->in_buf.pos) { /* out of data. Get more */
+
+ DEBUG2("Get more data (size=%d,bufsize=%d)",
+ (int)MIN(size-chunk_pos,data->buffsize),
+ (int)data->buffsize);
+
+
+ data->in_buf.size =
+ gras_trp_tcp_recv_withbuffer(sock, data->in_buf.data,
+ MIN(size-chunk_pos,data->buffsize),
+ data->buffsize);
+
+ data->in_buf.pos=0;
+ }
+
+ thissize = min(size-chunk_pos , data->in_buf.size - data->in_buf.pos);
+ memcpy(chunk+chunk_pos, data->in_buf.data + data->in_buf.pos, thissize);
+
+ data->in_buf.pos += thissize;
+ chunk_pos += thissize;
+ DEBUG4("New pos = %d; Still to receive = %ld of %ld. Ctn so far=(%s)",
+ data->in_buf.pos,size - chunk_pos,size,hexa_str((unsigned char*)chunk,chunk_pos,0));
+ }
+ /* indicate on need to the gras_select function that there is more to read on this socket so that it does not actually select */
+ sock->moredata = (data->in_buf.size > data->in_buf.pos);
+ DEBUG1("There is %smore data",(sock->moredata?"":"no "));
+
+ XBT_OUT;
+ return chunk_pos;
+}
+
+/*****************************************/
+/****[ end of BUFFERED DATA EXCHANGE ]****/
+/*****************************************/
+
+/********************************/
+/****[ VECTOR DATA EXCHANGE ]****/
+/********************************/
+#ifdef HAVE_READV
+static void
+gras_trp_iov_send(gras_socket_t sock,
+ const char *chunk,
+ unsigned long int size,
+ int stable) {
+ struct iovec elm;
+ gras_trp_bufdata_t *data=(gras_trp_bufdata_t*)sock->bufdata;
+
+
+ DEBUG1("Buffer one chunk to be sent later (%s)",
+ hexa_str((char*)chunk,size,0));
+
+ elm.iov_len = (size_t)size;
+
+ if (!stable) {
+ /* data storage won't last until flush. Save it in a buffer if we can */
+
+ if (size > data->buffsize-data->out_buf.size) {
+ /* buffer too small:
+ flush the socket, using data in its actual storage */
+ elm.iov_base = (void*)chunk;
+ xbt_dynar_push(data->out_buf_v,&elm);
+
+ gras_trp_bufiov_flush(sock);
+ return;
+ } else {
+ /* buffer big enough:
+ copy data into it, and chain it for upcoming writev */
+ memcpy(data->out_buf.data + data->out_buf.size, chunk, size);
+ elm.iov_base = (void*)(data->out_buf.data + data->out_buf.size);
+ data->out_buf.size += size;
+
+ xbt_dynar_push(data->out_buf_v,&elm);
+ }
+
+ } else {
+ /* data storage stable. Chain it */
+
+ elm.iov_base = (void*)chunk;
+ xbt_dynar_push(data->out_buf_v,&elm);
+ }
+}
+static int
+gras_trp_iov_recv(gras_socket_t sock,
+ char *chunk,
+ unsigned long int size) {
+ struct iovec elm;
+
+ DEBUG0("Buffer one chunk to be received later");
+ elm.iov_base = (void*)chunk;
+ elm.iov_len = (size_t)size;
+ xbt_dynar_push(sock->bufdata->in_buf_v,&elm);
+
+ return size;
+}
+
+#endif
+/***************************************/
+/****[ end of VECTOR DATA EXCHANGE ]****/
+/***************************************/
+
+
+/***
+ *** Prototypes of BUFFERED
+ ***/
+
+void gras_trp_buf_socket_client(gras_trp_plugin_t self,
+ gras_socket_t sock);
+void gras_trp_buf_socket_server(gras_trp_plugin_t self,
+ gras_socket_t sock);
+gras_socket_t gras_trp_buf_socket_accept(gras_socket_t sock);
+
+void gras_trp_buf_socket_close(gras_socket_t sd);
+
+
+gras_socket_t gras_trp_buf_init_sock(gras_socket_t sock) {
+ gras_trp_bufdata_t *data=xbt_new(gras_trp_bufdata_t,1);
+
+ data->buffsize = 100 * 1024 ; /* 100k */
+
+ data->in_buf.size = 0;
+ data->in_buf.data = xbt_malloc(data->buffsize);
+ data->in_buf.pos = 0; /* useless, indeed, since size==pos */
+
+ data->out_buf.size = 0;
+ data->out_buf.data = xbt_malloc(data->buffsize);
+ data->out_buf.pos = data->out_buf.size;
+
+#ifdef HAVE_READV
+ data->in_buf_v = data->out_buf_v = NULL;
+ data->in_buf_v=xbt_dynar_new(sizeof(struct iovec),NULL);
+ data->out_buf_v=xbt_dynar_new(sizeof(struct iovec),NULL);
+ data->out = buffering_iov;
+#else
+ data->out = buffering_buf;
+#endif
+
+ data->in = buffering_buf;
+
+ sock->bufdata = data;
+ return sock;
+}
+
+/***
+ *** Code
+ ***/
+void
+gras_trp_tcp_setup(gras_trp_plugin_t plug) {
+
+ plug->socket_client = gras_trp_buf_socket_client;
+ plug->socket_server = gras_trp_buf_socket_server;
+ plug->socket_accept = gras_trp_buf_socket_accept;
+ plug->socket_close = gras_trp_buf_socket_close;
+
+#ifdef HAVE_READV
+ plug->send = gras_trp_iov_send;
+#else
+ plug->send = gras_trp_buf_send;
+#endif
+ plug->recv = gras_trp_buf_recv;
+
+ plug->raw_send = gras_trp_tcp_send;
+ plug->raw_recv = gras_trp_tcp_recv;
+
+ plug->flush = gras_trp_bufiov_flush;
+
+ plug->data = NULL;
+ plug->exit = NULL;
+}
+
+void gras_trp_buf_socket_client(gras_trp_plugin_t self,
+ /* OUT */ gras_socket_t sock){
+
+ gras_trp_sock_socket_client(NULL,sock);
+ gras_trp_buf_init_sock(sock);
+}
+
+/**
+ * gras_trp_buf_socket_server:
+ *
+ * Open a socket used to receive messages.
+ */
+void gras_trp_buf_socket_server(gras_trp_plugin_t self,
+ /* OUT */ gras_socket_t sock){
+
+ gras_trp_sock_socket_server(NULL,sock);
+ gras_trp_buf_init_sock(sock);
+}
+
+gras_socket_t gras_trp_buf_socket_accept(gras_socket_t sock) {
+ return gras_trp_buf_init_sock(gras_trp_sock_socket_accept(sock));
+}
+
+void gras_trp_buf_socket_close(gras_socket_t sock){
+ gras_trp_bufdata_t *data=sock->bufdata;
+
+ if (data->in_buf.size!=data->in_buf.pos) {
+ WARN3("Socket closed, but %d bytes were unread (size=%d,pos=%d)",
+ data->in_buf.size - data->in_buf.pos,
+ data->in_buf.size, data->in_buf.pos);
+ }
+ if (data->in_buf.data)
+ free(data->in_buf.data);
+
+ if (data->out_buf.size!=data->out_buf.pos) {
+ DEBUG2("Flush the socket before closing (in=%d,out=%d)",
+ data->in_buf.size, data->out_buf.size);
+ gras_trp_bufiov_flush(sock);
+ }
+ if (data->out_buf.data)
+ free(data->out_buf.data);
+
+#ifdef HAVE_READV
+ if (data->in_buf_v) {
+ if (xbt_dynar_length(data->in_buf_v))
+ WARN0("Socket closed, but some bytes were unread");
+ xbt_dynar_free(&data->in_buf_v);
+ }
+ if (data->out_buf_v) {
+ if (xbt_dynar_length(data->out_buf_v)) {
+ DEBUG0("Flush the socket before closing");
+ gras_trp_bufiov_flush(sock);
+ }
+ xbt_dynar_free(&data->out_buf_v);
+ }
+#endif
+
+ free(data);
+ gras_trp_sock_socket_close(sock);
+}
+
+/****************************/
+/****[ HELPER FUNCTIONS ]****/
+/****************************/
+
+/*
+ * Returns the tcp protocol number from the network protocol data base.
+ *
+ * getprotobyname() is not thread safe. We need to lock it.
+ */
+static int _gras_tcp_proto_number(void) {
+ struct protoent *fetchedEntry;
+ static int returnValue = 0;
+
+ if(returnValue == 0) {
+ fetchedEntry = getprotobyname("tcp");
+ xbt_assert0(fetchedEntry, "getprotobyname(tcp) gave NULL");
+ returnValue = fetchedEntry->p_proto;
+ }
+
+ return returnValue;
+}
+
+#ifdef HAVE_WINSOCK_H
+#define RETSTR( x ) case x: return #x
+
+const char *gras_wsa_err2string( int err ) {
+ switch( err ) {
+ RETSTR( WSAEINTR );
+ RETSTR( WSAEBADF );
+ RETSTR( WSAEACCES );
+ RETSTR( WSAEFAULT );
+ RETSTR( WSAEINVAL );
+ RETSTR( WSAEMFILE );
+ RETSTR( WSAEWOULDBLOCK );
+ RETSTR( WSAEINPROGRESS );
+ RETSTR( WSAEALREADY );
+ RETSTR( WSAENOTSOCK );
+ RETSTR( WSAEDESTADDRREQ );
+ RETSTR( WSAEMSGSIZE );
+ RETSTR( WSAEPROTOTYPE );
+ RETSTR( WSAENOPROTOOPT );
+ RETSTR( WSAEPROTONOSUPPORT );
+ RETSTR( WSAESOCKTNOSUPPORT );
+ RETSTR( WSAEOPNOTSUPP );
+ RETSTR( WSAEPFNOSUPPORT );
+ RETSTR( WSAEAFNOSUPPORT );
+ RETSTR( WSAEADDRINUSE );
+ RETSTR( WSAEADDRNOTAVAIL );
+ RETSTR( WSAENETDOWN );
+ RETSTR( WSAENETUNREACH );
+ RETSTR( WSAENETRESET );
+ RETSTR( WSAECONNABORTED );
+ RETSTR( WSAECONNRESET );
+ RETSTR( WSAENOBUFS );
+ RETSTR( WSAEISCONN );
+ RETSTR( WSAENOTCONN );
+ RETSTR( WSAESHUTDOWN );
+ RETSTR( WSAETOOMANYREFS );
+ RETSTR( WSAETIMEDOUT );
+ RETSTR( WSAECONNREFUSED );
+ RETSTR( WSAELOOP );
+ RETSTR( WSAENAMETOOLONG );
+ RETSTR( WSAEHOSTDOWN );
+ RETSTR( WSAEHOSTUNREACH );
+ RETSTR( WSAENOTEMPTY );
+ RETSTR( WSAEPROCLIM );
+ RETSTR( WSAEUSERS );
+ RETSTR( WSAEDQUOT );
+ RETSTR( WSAESTALE );
+ RETSTR( WSAEREMOTE );
+ RETSTR( WSASYSNOTREADY );
+ RETSTR( WSAVERNOTSUPPORTED );
+ RETSTR( WSANOTINITIALISED );
+ RETSTR( WSAEDISCON );
+
+#ifdef HAVE_WINSOCK2
+ RETSTR( WSAENOMORE );
+ RETSTR( WSAECANCELLED );
+ RETSTR( WSAEINVALIDPROCTABLE );
+ RETSTR( WSAEINVALIDPROVIDER );
+ RETSTR( WSASYSCALLFAILURE );
+ RETSTR( WSASERVICE_NOT_FOUND );
+ RETSTR( WSATYPE_NOT_FOUND );
+ RETSTR( WSA_E_NO_MORE );
+ RETSTR( WSA_E_CANCELLED );
+ RETSTR( WSAEREFUSED );
+#endif /* HAVE_WINSOCK2 */
+
+ RETSTR( WSAHOST_NOT_FOUND );
+ RETSTR( WSATRY_AGAIN );
+ RETSTR( WSANO_RECOVERY );
+ RETSTR( WSANO_DATA );
+ }
+ return "unknown WSA error";
+}
+#endif /* HAVE_WINSOCK_H */
+
+/***********************************/
+/****[ end of HELPER FUNCTIONS ]****/
+/***********************************/
