/* exchange in SG realm is implemented directly without mimicing real life */
/* This would be terribly unefficient. */
-/* Authors: Martin Quinson */
-/* Copyright (C) 2004 Martin Quinson. */
+/* 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. */
+ * under the terms of the license (GNU LGPL) which comes with this package. */
-#include <msg.h>
+#include "xbt/ex.h"
+
+#include "msg/msg.h"
-#include "gras_private.h"
#include "transport_private.h"
+#include "gras/Virtu/virtu_sg.h"
-GRAS_LOG_EXTERNAL_CATEGORY(transport);
-GRAS_LOG_NEW_DEFAULT_SUBCATEGORY(trp_sg,transport);
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_trp_sg,gras_trp,"SimGrid pseudo-transport");
/***
*** Prototypes
***/
-gras_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
- const char *host,
- unsigned short port,
- /* OUT */ gras_socket_t *sock);
-gras_error_t gras_trp_sg_socket_server(gras_trp_plugin_t *self,
- unsigned short port,
- /* OUT */ gras_socket_t *sock);
-void gras_trp_sg_socket_close(gras_socket_t *sd);
-
-gras_error_t gras_trp_sg_chunk_send(gras_socket_t *sd,
- char *data,
- size_t size);
-
-gras_error_t gras_trp_sg_chunk_recv(gras_socket_t *sd,
- char *data,
- size_t size);
-
-/* FIXME
- gras_error_t gras_trp_sg_flush(gras_socket_t *sd);
-*/
+
+/* retrieve the port record associated to a numerical port on an host */
+static void find_port(gras_hostdata_t *hd, int port, gras_sg_portrec_t *hpd);
+
+
+void gras_trp_sg_socket_client(gras_trp_plugin_t self,
+ /* OUT */ gras_socket_t sock);
+void gras_trp_sg_socket_server(gras_trp_plugin_t self,
+ /* OUT */ gras_socket_t sock);
+void gras_trp_sg_socket_close(gras_socket_t sd);
+
+void gras_trp_sg_chunk_send_raw(gras_socket_t sd,
+ const char *data,
+ unsigned long int size);
+void gras_trp_sg_chunk_send(gras_socket_t sd,
+ const char *data,
+ unsigned long int size,
+ int stable_ignored);
+
+int gras_trp_sg_chunk_recv(gras_socket_t sd,
+ char *data,
+ unsigned long int size);
/***
*** Specific plugin part
***/
typedef struct {
int placeholder; /* nothing plugin specific so far */
-} gras_trp_sg_plug_specific_t;
+} gras_trp_sg_plug_data_t;
+
/***
- *** Specific socket part
+ *** Code
***/
-typedef struct {
- int from_PID; /* process which sent this message */
- int to_PID; /* process to which this message is destinated */
+static void find_port(gras_hostdata_t *hd, int port,
+ gras_sg_portrec_t *hpd) {
+ int cpt;
+ gras_sg_portrec_t pr;
- m_host_t to_host; /* Who's on other side */
- m_channel_t to_chan;/* Channel on which the other side is earing */
-} gras_trp_sg_sock_specific_t;
+ xbt_assert0(hd,"Please run gras_process_init on each process");
+
+ xbt_dynar_foreach(hd->ports, cpt, pr) {
+ if (pr.port == port) {
+ memcpy(hpd,&pr,sizeof(gras_sg_portrec_t));
+ return;
+ }
+ }
+ THROW1(mismatch_error,0,"Unable to find any portrec for port #%d",port);
+}
-/***
- *** Code
- ***/
+void
+gras_trp_sg_setup(gras_trp_plugin_t plug) {
-gras_error_t
-gras_trp_sg_setup(gras_trp_plugin_t *plug) {
+ gras_trp_sg_plug_data_t *data=xbt_new(gras_trp_sg_plug_data_t,1);
- gras_trp_sg_plug_specific_t *sg=malloc(sizeof(gras_trp_sg_plug_specific_t));
- if (!sg)
- RAISE_MALLOC;
+ plug->data = data;
plug->socket_client = gras_trp_sg_socket_client;
plug->socket_server = gras_trp_sg_socket_server;
plug->socket_close = gras_trp_sg_socket_close;
- plug->chunk_send = gras_trp_sg_chunk_send;
- plug->chunk_recv = gras_trp_sg_chunk_recv;
+ plug->raw_send = gras_trp_sg_chunk_send_raw;
+ plug->send = gras_trp_sg_chunk_send;
+ plug->raw_recv = plug->recv = gras_trp_sg_chunk_recv;
- plug->data = sg;
-
- return no_error;
+ plug->flush = NULL; /* nothing cached */
}
-gras_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
- const char *host,
- unsigned short port,
- /* OUT */ gras_socket_t *dst){
+void gras_trp_sg_socket_client(gras_trp_plugin_t self,
+ /* OUT */ gras_socket_t sock){
+ xbt_ex_t e;
m_host_t peer;
gras_hostdata_t *hd;
- int i;
+ gras_trp_sg_sock_data_t *data;
+ gras_sg_portrec_t pr;
/* make sure this socket will reach someone */
- if (!(peer=MSG_get_host_by_name(host))) {
- fprintf(stderr,"GRAS: can't connect to %s: no such host.\n",host);
- return mismatch_error;
- }
- if (!(hd=(gras_hostdata_t *)MSG_host_get_data(peer))) {
- fprintf(stderr,"GRAS: can't connect to %s: no process on this host.\n",host);
- return mismatch_error;
+ if (!(peer=MSG_get_host_by_name(sock->peer_name)))
+ THROW1(mismatch_error,0,"Can't connect to %s: no such host.\n",sock->peer_name);
+
+ if (!(hd=(gras_hostdata_t *)MSG_host_get_data(peer)))
+ THROW1(mismatch_error,0,
+ "can't connect to %s: no process on this host",
+ sock->peer_name);
+
+ TRY {
+ find_port(hd,sock->peer_port,&pr);
+ } CATCH(e) {
+ if (e.category == mismatch_error) {
+ xbt_ex_free(e);
+ THROW2(mismatch_error,0,
+ "can't connect to %s:%d, no process listen on this port",
+ sock->peer_name,sock->peer_port);
+ }
+ RETHROW;
}
- for (i=0; i<hd->portLen && port != hd->port[i]; i++);
- if (i == hd->portLen) {
- fprintf(stderr,"GRAS: can't connect to %s:%d, no process listen on this port.\n",host,port);
- return mismatch_error;
- }
-
- if (hd->raw[i] && !raw) {
- fprintf(stderr,"GRAS: can't connect to %s:%d in regular mode, the process listen in raw mode on this port.\n",host,port);
- return mismatch_error;
+
+ if (pr.meas && !sock->meas) {
+ THROW2(mismatch_error,0,
+ "can't connect to %s:%d in regular mode, the process listen "
+ "in meas mode on this port",sock->peer_name,sock->peer_port);
}
- if (!hd->raw[i] && raw) {
- fprintf(stderr,"GRAS: can't connect to %s:%d in raw mode, the process listen in regular mode on this port.\n",host,port);
- return mismatch_error;
+ if (!pr.meas && sock->meas) {
+ THROW2(mismatch_error,0,
+ "can't connect to %s:%d in meas mode, the process listen "
+ "in regular mode on this port",sock->peer_name,sock->peer_port);
}
-
- /* Create the socket */
- if (!(*sock=(gras_sock_t*)malloc(sizeof(gras_sock_t)))) {
- fprintf(stderr,"GRAS: openClientSocket: out of memory\n");
- return malloc_error;
- }
-
- (*sock)->server_sock = 0;
- (*sock)->raw_sock = raw;
- (*sock)->from_PID = MSG_process_self_PID();
- (*sock)->to_PID = hd->proc[ hd->port2chan[i] ];
- (*sock)->to_host = peer;
- (*sock)->to_port = port;
- (*sock)->to_chan = hd->port2chan[i];
-
- /*
- fprintf(stderr,"GRAS: %s (PID %d) connects in %s mode to %s:%d (to_PID=%d).\n",
+ /* create the socket */
+ data = xbt_new(gras_trp_sg_sock_data_t,1);
+ data->from_PID = MSG_process_self_PID();
+ data->to_PID = hd->proc[ pr.tochan ];
+ data->to_host = peer;
+ data->to_chan = pr.tochan;
+
+ sock->data = data;
+ sock->incoming = 1;
+
+ DEBUG6("%s (PID %d) connects in %s mode to %s:%d (to_PID=%d)",
MSG_process_get_name(MSG_process_self()), MSG_process_self_PID(),
- raw?"RAW":"regular",host,port,(*sock)->to_PID);
- */
+ sock->meas?"meas":"regular",
+ sock->peer_name,sock->peer_port,data->to_PID);
}
-gras_error_t gras_trp_sg_socket_server(gras_trp_plugin_t *self,
- unsigned short port,
- /* OUT */ gras_socket_t *dst){
+void gras_trp_sg_socket_server(gras_trp_plugin_t self,
+ gras_socket_t sock){
gras_hostdata_t *hd=(gras_hostdata_t *)MSG_host_get_data(MSG_host_self());
- gras_procdata_t *pd=(gras_procdata_t *)MSG_process_get_data(MSG_process_self());
- int port,i;
+ gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_by_id(gras_trp_libdata_id);
+ gras_sg_portrec_t pr;
+ gras_trp_sg_sock_data_t *data;
+ volatile int found;
+
const char *host=MSG_host_get_name(MSG_host_self());
- gras_assert0(hd,"Please run gras_process_init on each process");
- gras_assert0(pd,"Please run gras_process_init on each process");
-
- for (port=startingPort ; port <= endingPort ; port++) {
- for (i=0; i<hd->portLen && hd->port[i] != port; i++);
- if (i<hd->portLen && hd->port[i] == port)
- continue;
-
- /* port not used so far. Do it */
- if (i == hd->portLen) {
- /* need to enlarge the tables */
- if (hd->portLen++) {
- hd->port2chan=(int*)realloc(hd->port2chan,hd->portLen*sizeof(int));
- hd->port =(int*)realloc(hd->port ,hd->portLen*sizeof(int));
- hd->raw =(int*)realloc(hd->raw ,hd->portLen*sizeof(int));
- } else {
- hd->port2chan=(int*)malloc(hd->portLen*sizeof(int));
- hd->port =(int*)malloc(hd->portLen*sizeof(int));
- hd->raw =(int*)malloc(hd->portLen*sizeof(int));
- }
- if (!hd->port2chan || !hd->port || !hd->raw) {
- fprintf(stderr,"GRAS: PANIC: A malloc error did lose all ports attribution on this host\n");
- hd->portLen = 0;
- return malloc_error;
- }
- }
- hd->port2chan[ i ]=raw ? pd->rawChan : pd->chan;
- hd->port[ i ]=port;
- hd->raw[ i ]=raw;
-
- /* Create the socket */
- if (!(*sock=(gras_sock_t*)malloc(sizeof(gras_sock_t)))) {
- fprintf(stderr,"GRAS: openServerSocket: out of memory\n");
- return malloc_error;
- }
-
- (*sock)->server_sock = 1;
- (*sock)->raw_sock = raw;
- (*sock)->from_PID = -1;
- (*sock)->to_PID = MSG_process_self_PID();
- (*sock)->to_host = MSG_host_self();
- (*sock)->to_port = port;
- (*sock)->to_chan = pd->chan;
-
- /*
- fprintf(stderr,"GRAS: '%s' (%d) ears on %s:%d%s (%p).\n",
- MSG_process_get_name(MSG_process_self()), MSG_process_self_PID(),
- host,port,raw? " (mode RAW)":"",*sock);
- */
- return no_error;
+ xbt_ex_t e;
+
+ xbt_assert0(hd,"Please run gras_process_init on each process");
+
+ sock->accepting = 0; /* no such nuisance in SG */
+
+ found = 0;
+ TRY {
+ find_port(hd,sock->port,&pr);
+ found = 1;
+ } CATCH(e) {
+ if (e.category == mismatch_error)
+ xbt_ex_free(e);
+ else
+ RETHROW;
}
- /* if we go out of the previous for loop, that's that we didn't find any
- suited port number */
+
+ if (found)
+ THROW2(mismatch_error,0,
+ "can't listen on address %s:%d: port already in use.",
+ host,sock->port);
+
+ pr.tochan = sock->meas ? pd->measChan : pd->chan;
+ pr.port = sock->port;
+ pr.meas = sock->meas;
+ xbt_dynar_push(hd->ports,&pr);
+
+ /* Create the socket */
+ data = xbt_new(gras_trp_sg_sock_data_t,1);
+ data->from_PID = -1;
+ data->to_PID = MSG_process_self_PID();
+ data->to_host = MSG_host_self();
+ data->to_chan = pd->chan;
+
+ sock->data = data;
- fprintf(stderr,
- "GRAS: can't find an empty port between %d and %d to open a socket on host %s\n.",
- startingPort,endingPort,host);
- return mismatch_error;
+ VERB6("'%s' (%d) ears on %s:%d%s (%p)",
+ MSG_process_get_name(MSG_process_self()), MSG_process_self_PID(),
+ host,sock->port,sock->meas? " (mode meas)":"",sock);
}
-void gras_trp_sg_socket_close(gras_socket_t *sd){
+void gras_trp_sg_socket_close(gras_socket_t sock){
gras_hostdata_t *hd=(gras_hostdata_t *)MSG_host_get_data(MSG_host_self());
- int i;
-
- if (!sd) return;
- gras_assert0(hd,"Please run gras_process_init on each process");
-
- if (raw && !sd->raw_sock) {
- fprintf(stderr,"GRAS: gras_rawsock_close: Was passed a regular socket. Please use gras_sock_close()\n");
- }
- if (!raw && sd->raw_sock) {
- fprintf(stderr,"GRAS: grasSockClose: Was passed a raw socket. Please use gras_rawsock_close()\n");
- }
- if (sd->server_sock) {
- /* server mode socket. Un register it from 'OS' tables */
- for (i=0;
- i<hd->portLen && sd->to_port != hd->port[i];
- i++);
-
- if (i==hd->portLen) {
- fprintf(stderr,"GRAS: closeSocket: The host does not know this server socket.\n");
- } else {
- memmove(&(hd->port[i]), &(hd->port[i+1]), (hd->portLen -i -1) * sizeof(int));
- memmove(&(hd->raw[i]), &(hd->raw[i+1]), (hd->portLen -i -1) * sizeof(int));
- memmove(&(hd->port2chan[i]), &(hd->port2chan[i+1]), (hd->portLen -i -1) * sizeof(int));
- hd->portLen--;
+ int cpt;
+
+ gras_sg_portrec_t pr;
+
+ XBT_IN1(" (sock=%p)",sock);
+
+ if (!sock) return;
+ xbt_assert0(hd,"Please run gras_process_init on each process");
+
+ if (sock->data)
+ free(sock->data);
+
+ if (sock->incoming && sock->port >= 0) {
+ /* server mode socket. Unregister it from 'OS' tables */
+ xbt_dynar_foreach(hd->ports, cpt, pr) {
+ DEBUG2("Check pr %d of %lu", cpt, xbt_dynar_length(hd->ports));
+ if (pr.port == sock->port) {
+ xbt_dynar_cursor_rm(hd->ports, &cpt);
+ XBT_OUT;
+ return;
+ }
}
- }
- free(sd);
+ WARN2("socket_close called on the unknown incoming socket %p (port=%d)",
+ sock,sock->port);
+ }
+ XBT_OUT;
+}
+
+typedef struct {
+ int size;
+ void *data;
+} sg_task_data_t;
+
+void gras_trp_sg_chunk_send(gras_socket_t sock,
+ const char *data,
+ unsigned long int size,
+ int stable_ignored) {
+ gras_trp_sg_chunk_send_raw(sock,data,size);
}
-gras_error_t gras_trp_sg_chunk_send(gras_socket_t *sd,
- char *data,
- size_t size) {
+void gras_trp_sg_chunk_send_raw(gras_socket_t sock,
+ const char *data,
+ unsigned long int size) {
m_task_t task=NULL;
static unsigned int count=0;
char name[256];
+ gras_trp_sg_sock_data_t *sock_data = (gras_trp_sg_sock_data_t *)sock->data;
+ sg_task_data_t *task_data;
+ xbt_assert0(sock->meas, "SG chunk exchange shouldn't be used on non-measurement sockets");
+
sprintf(name,"Chunk[%d]",count++);
- task=MSG_task_create(name,0,((double)size)/(1024.0*1024.0),NULL);
- if (MSG_task_put(task, sock->to_host,sock->to_chan) != MSG_OK) {
- RAISE(system_error,"Problem during the MSG_task_put");
+ task_data=xbt_new(sg_task_data_t,1);
+ task_data->size = size;
+ if (data) {
+ task_data->data=(void*)xbt_malloc(size);
+ memcpy(task_data->data,data,size);
+ } else {
+ task_data->data = NULL;
}
- return no_error;
-}
-
-gras_error_t gras_trp_sg_chunk_recv(gras_socket_t *sd,
- char *data,
- size_t size){
- gras_procdata_t *pd=
- (gras_procdata_t*)MSG_process_get_data(MSG_process_self());
+ task=MSG_task_create(name,0,((double)size),task_data);
- unsigned int bytesTotal=0;
- m_task_t task=NULL;
-
- if (MSG_task_get(&task, (m_channel_t) pd->rawChan) != MSG_OK) {
- fprintf(stderr,"GRAS: Error in MSG_task_get()\n");
- return unknown_error;
- }
- if (MSG_task_destroy(task) != MSG_OK) {
- fprintf(stderr,"GRAS: Error in MSG_task_destroy()\n");
- return unknown_error;
+ DEBUG5("send chunk %s from %s to %s:%d (size=%ld)",
+ name, MSG_host_get_name(MSG_host_self()),
+ MSG_host_get_name(sock_data->to_host), sock_data->to_chan,size);
+ if (MSG_task_put_with_timeout(task, sock_data->to_host,sock_data->to_chan,60.0) != MSG_OK) {
+ THROW0(system_error,0,"Problem during the MSG_task_put with timeout 60");
}
-
- return no_error;
}
-/*FIXME
+int gras_trp_sg_chunk_recv(gras_socket_t sock,
+ char *data,
+ unsigned long int size){
+ gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_by_id(gras_trp_libdata_id);
-gras_error_t gras_trp_sg_flush(gras_socket_t *sd){
- RAISE_UNIMPLEMENTED;
+ m_task_t task=NULL;
+ sg_task_data_t *task_data;
+ gras_trp_sg_sock_data_t *sock_data = sock->data;
+
+ xbt_assert0(sock->meas, "SG chunk exchange shouldn't be used on non-measurement sockets");
+ XBT_IN;
+ DEBUG4("recv chunk on %s -> %s:%d (size=%ld)",
+ MSG_host_get_name(sock_data->to_host),
+ MSG_host_get_name(MSG_host_self()), sock_data->to_chan, size);
+ if (MSG_task_get_with_time_out(&task,
+ (sock->meas ? pd->measChan : pd->chan),
+ 60) != MSG_OK)
+ THROW0(system_error,0,"Error in MSG_task_get()");
+ DEBUG1("Got chuck %s",MSG_task_get_name(task));
+
+ task_data = MSG_task_get_data(task);
+ if (task_data->size != size)
+ THROW5(mismatch_error,0,
+ "Got %d bytes when %ld where expected (in %s->%s:%d)",
+ task_data->size, size,
+ MSG_host_get_name(sock_data->to_host),
+ MSG_host_get_name(MSG_host_self()), sock_data->to_chan);
+ if (data)
+ memcpy(data,task_data->data,size);
+ if (task_data->data)
+ free(task_data->data);
+ free(task_data);
+
+ if (MSG_task_destroy(task) != MSG_OK)
+ THROW0(system_error,0,"Error in MSG_task_destroy()");
+
+ XBT_OUT;
+ return size;
}
-*/
+
