/* 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 "gras_private.h"
-#include "transport_private.h"
+#include "xbt/ex.h"
+
+#include "msg/msg.h"
-GRAS_LOG_EXTERNAL_CATEGORY(transport);
-GRAS_LOG_NEW_DEFAULT_SUBCATEGORY(trp_sg,transport);
+#include "transport_private.h"
+#include "gras/Virtu/virtu_sg.h"
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_trp_sg,gras_trp,"SimGrid pseudo-transport");
/***
*** Prototypes
***/
-void gras_trp_sg_exit(gras_trp_plugin_t *plugin);
-gras_error_t gras_trp_sg_socket_client(const char *host,
- unsigned short port,
- int raw,
- /* OUT */ gras_socket_t **dst);
-gras_error_t gras_trp_sg_socket_server(unsigned short port,
- int raw,
- /* OUT */ gras_socket_t **dst);
-void gras_trp_sg_socket_close(gras_socket_t **sd);
-gras_error_t gras_trp_sg_select(double timeOut,
- gras_socket_t **sd);
-
-gras_error_t gras_trp_sg_bloc_send(gras_socket_t *sd,
- void *data,
- size_t size,
- double timeOut);
-
-gras_error_t gras_trp_sg_bloc_recv(gras_socket_t *sd,
- void *data,
- size_t size,
- double timeOut);
-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 dummy;
-} gras_trp_sg_specific_t;
+ int placeholder; /* nothing plugin specific so far */
+} gras_trp_sg_plug_data_t;
-/***
- *** Specific socket part
- ***/
/***
*** Code
***/
+static void find_port(gras_hostdata_t *hd, int port,
+ gras_sg_portrec_t *hpd) {
+ int cpt;
+ gras_sg_portrec_t pr;
-gras_error_t
-gras_trp_sg_init(gras_trp_plugin_t **dst) {
-
- gras_trp_sg_specific_t *specific = malloc(sizeof(gras_trp_sg_specific_t));
- if (!specific)
- RAISE_MALLOC;
-
- return no_error;
+ 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);
}
+
void
-gras_trp_sg_exit(gras_trp_plugin_t *plugin) {
- gras_trp_sg_specific_t *specific = (gras_trp_sg_specific_t*)plugin->specific;
- free(specific);
+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);
+
+ 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->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->flush = NULL; /* nothing cached */
}
-gras_error_t gras_trp_sg_socket_client(const char *host,
- unsigned short port,
- int raw,
- /* OUT */ gras_socket_t **dst){
- RAISE_UNIMPLEMENTED;
+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;
+ 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(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;
+ }
+
+ 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 (!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 */
+ 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(),
+ sock->meas?"meas":"regular",
+ sock->peer_name,sock->peer_port,data->to_PID);
}
-gras_error_t gras_trp_sg_socket_server(unsigned short port,
- int raw,
- /* OUT */ gras_socket_t **dst){
- RAISE_UNIMPLEMENTED;
+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_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());
+
+ 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 (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;
+
+ 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){
- ERROR1("%s not implemented",__FUNCTION__);
- abort();
+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 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;
+ }
+ }
+ WARN2("socket_close called on the unknown incoming socket %p (port=%d)",
+ sock,sock->port);
+ }
+ XBT_OUT;
}
-gras_error_t gras_trp_sg_select(double timeOut,
- gras_socket_t **sd){
- RAISE_UNIMPLEMENTED;
+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);
}
+
+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;
-gras_error_t gras_trp_sg_bloc_send(gras_socket_t *sd,
- void *data,
- size_t size,
- double timeOut){
- RAISE_UNIMPLEMENTED;
-}
+ xbt_assert0(sock->meas, "SG chunk exchange shouldn't be used on non-measurement sockets");
+
+ sprintf(name,"Chunk[%d]",count++);
+
+ 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;
+ }
-gras_error_t gras_trp_sg_bloc_recv(gras_socket_t *sd,
- void *data,
- size_t size,
- double timeOut){
- RAISE_UNIMPLEMENTED;
+ task=MSG_task_create(name,0,((double)size),task_data);
+
+ 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");
+ }
}
-gras_error_t gras_trp_sg_flush(gras_socket_t *sd){
- RAISE_UNIMPLEMENTED;
+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);
+
+ 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;
}
