* under the terms of the license (GNU LGPL) which comes with this package. */
#include "amok/Bandwidth/bandwidth_private.h"
+#include "gras/Msg/msg_private.h" /* FIXME: This mucks with contextes to answer RPC directly */
-XBT_LOG_EXTERNAL_CATEGORY(bw);
-XBT_LOG_DEFAULT_CATEGORY(bw);
+XBT_LOG_EXTERNAL_CATEGORY(amok_bw);
+XBT_LOG_DEFAULT_CATEGORY(amok_bw);
-#if 0
-/* ***************************************************************************
- * Link saturation
- * ***************************************************************************/
-
-xbt_error_t grasbw_saturate_start(const char* from_name,unsigned int from_port,
- const char* to_name,unsigned int to_port,
- unsigned int msgSize, unsigned int timeout) {
- gras_sock_t *sock;
- xbt_error_t errcode;
- /* The request */
- SatExp_t *request;
- msgHost_t *target;
- /* answer */
- gras_msg_t *answer;
-
- if((errcode=gras_sock_client_open(from_name,from_port,&sock))) {
- fprintf(stderr,"%s:%d:saturate_start(): Error %s encountered while contacting peer\n",
- __FILE__,__LINE__,xbt_error_name(errcode));
- return errcode;
- }
- if (!(request=(SatExp_t *)malloc(sizeof(SatExp_t))) ||
- !(target=(msgHost_t*)malloc(sizeof(msgHost_t)))) {
- fprintf(stderr,"%s:%d:saturate_start(): Malloc error\n",__FILE__,__LINE__);
- gras_sock_close(sock);
- return malloc_error;
- }
-
- request->timeout=timeout;
- request->msgSize=msgSize;
+static int amok_bw_cb_sat_start(gras_msg_cb_ctx_t ctx, void *payload);
+static int amok_bw_cb_sat_begin(gras_msg_cb_ctx_t ctx, void *payload);
- strcpy(target->host,to_name);
- target->port=to_port;
- if ((errcode=gras_msg_new_and_send(sock,GRASMSG_SAT_START, 2,
- target,1,
- request,1))) {
- fprintf(stderr,"%s:%d:saturate_start(): Error %s encountered while sending the request.\n",
- __FILE__,__LINE__,xbt_error_name(errcode));
- gras_sock_close(sock);
- return errcode;
- }
- if ((errcode=gras_msg_wait(120,GRASMSG_SAT_STARTED,&answer))) {
- fprintf(stderr,"%s:%d:saturate_start(): Error %s encountered while waiting for the ACK.\n",
- __FILE__,__LINE__,xbt_error_name(errcode));
- gras_sock_close(sock);
- return errcode;
- }
-
- if((errcode=gras_msg_ctn(answer,0,0,msgError_t).errcode)) {
- fprintf(stderr,"%s:%d:saturate_start(): Peer reported error %s (%s).\n",
- __FILE__,__LINE__,xbt_error_name(errcode),gras_msg_ctn(answer,0,0,msgError_t).errmsg);
- gras_msg_free(answer);
- gras_sock_close(sock);
- return errcode;
- }
+void amok_bw_sat_init(void) {
+ gras_datadesc_type_t bw_res_desc=gras_datadesc_by_name("bw_res_t");
+ gras_datadesc_type_t sat_request_desc;
+ /* Build the saturation datatype descriptions */
+
+ sat_request_desc = gras_datadesc_struct("s_sat_request_desc_t");
+ gras_datadesc_struct_append(sat_request_desc,"host",gras_datadesc_by_name("s_xbt_host_t"));
+ gras_datadesc_struct_append(sat_request_desc,"msg_size",gras_datadesc_by_name("unsigned int"));
+ gras_datadesc_struct_append(sat_request_desc,"duration",gras_datadesc_by_name("unsigned int"));
+ gras_datadesc_struct_close(sat_request_desc);
+ sat_request_desc = gras_datadesc_ref("sat_request_t",sat_request_desc);
+
+ /* Register the saturation messages */
+ gras_msgtype_declare_rpc("amok_bw_sat start", sat_request_desc, NULL);
+ gras_msgtype_declare_rpc("amok_bw_sat begin", sat_request_desc, sat_request_desc);
+ gras_msgtype_declare_rpc("amok_bw_sat stop", NULL, bw_res_desc);
- gras_msg_free(answer);
- gras_sock_close(sock);
- return no_error;
+}
+void amok_bw_sat_join(void) {
+ gras_cb_register(gras_msgtype_by_name("amok_bw_sat start"),
+ &amok_bw_cb_sat_start);
+ gras_cb_register(gras_msgtype_by_name("amok_bw_sat begin"),
+ &amok_bw_cb_sat_begin);
+}
+void amok_bw_sat_leave(void) {
+ gras_cb_unregister(gras_msgtype_by_name("amok_bw_sat start"),
+ &amok_bw_cb_sat_start);
+ gras_cb_unregister(gras_msgtype_by_name("amok_bw_sat begin"),
+ &amok_bw_cb_sat_begin);
}
-int grasbw_cbSatStart(gras_msg_t *msg) {
- gras_rawsock_t *raw;
- gras_sock_t *sock;
- xbt_error_t errcode;
- double start; /* time to timeout */
-
- /* specification of the test to run */
- char* to_name=gras_msg_ctn(msg,0,0,msgHost_t).host;
- unsigned int to_port=gras_msg_ctn(msg,0,0,msgHost_t).port;
+/* ***************************************************************************
+ * Link saturation
+ * ***************************************************************************/
- unsigned int msgSize=gras_msg_ctn(msg,1,0,SatExp_t).msgSize;
- unsigned int timeout=gras_msg_ctn(msg,1,0,SatExp_t).timeout;
- unsigned int raw_port;
+/**
+ * @brief Ask 'from_name:from_port' to stop saturating going to to_name:to_name.
+ *
+ * @param from_name: Name of the host we are asking to do a experiment with (to_name:to_port)
+ * @param from_port: port on which the process we are asking for an experiment is listening
+ * (for message, do not give a raw socket here. The needed raw socket will be negociated
+ * between the peers)
+ * @param to_name: Name of the host with which we should conduct the experiment
+ * @param to_port: port on which the peer process is listening for message
+ * @param msg_size: Size of each message sent.
+ * @param duration: How long in maximum should be the saturation.
+ *
+ * Ask the process 'from_name:from_port' to start to saturate the link between itself
+ * and to_name:to_name.
+ */
+void amok_bw_saturate_start(const char* from_name,unsigned int from_port,
+ const char* to_name,unsigned int to_port,
+ unsigned int msg_size, double duration) {
+ gras_socket_t sock;
+
+ sat_request_t request = xbt_new(s_sat_request_t,1);
+
+ sock = gras_socket_client(from_name,from_port);
+
+ request->host.name = (char*)to_name;
+ request->host.port = to_port;
+
+ request->duration=duration;
+ request->msg_size=msg_size;
- /* The request */
- SatExp_t *request;
- /* answer */
- gras_msg_t *answer;
- /*
- fprintf(stderr,"grasbw_cbSatStart(sd=%p)\n",msg->sock);
- fprintf(stderr,"(server=%d,raw=%d,fromPID=%d,toPID=%d,toHost=%p,toPort=%d,toChan=%d)\n",
- msg->sock->server_sock,msg->sock->raw_sock,msg->sock->from_PID,
- msg->sock->to_PID,msg->sock->to_host,msg->sock->to_port,msg->sock->to_chan);
- */
+ gras_msg_rpccall(sock,60,gras_msgtype_by_name("amok_bw_sat start"),&request, NULL);
- /* Negociate the saturation with the peer */
- if((errcode=gras_sock_client_open(to_name,to_port,&sock))) {
- fprintf(stderr,"cbSatStart(): Error %s encountered while contacting peer\n",
- xbt_error_name(errcode));
- grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
- "cbSatStart: Severe error: Cannot send error status to requester!!\n",
- errcode,"Cannot contact peer.\n");
- return 1;
- }
- if (!(request=(SatExp_t *)malloc(sizeof(SatExp_t)))) {
- fprintf(stderr,"cbSatStart(): Malloc error\n");
- gras_sock_close(sock);
- grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
- "cbSatStart: Severe error: Cannot send error status to requester!!\n",
- malloc_error,"Cannot build request.\n");
- return 1;
- }
+ free(request);
+ gras_socket_close(sock);
+}
- request->timeout=gras_msg_ctn(msg,1,0,SatExp_t).timeout;
- request->msgSize=gras_msg_ctn(msg,1,0,SatExp_t).msgSize;
-
- if ((errcode=gras_msg_new_and_send(sock,GRASMSG_SAT_BEGIN, 1,
- request,1))) {
- fprintf(stderr,"cbSatStart(): Error %s encountered while sending the request.\n",
- xbt_error_name(errcode));
- grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
- "cbSatStart: Severe error: Cannot send error status to requester!!\n",
- errcode,"Cannot send request.\n");
- gras_sock_close(sock);
- return 1;
- }
+/* Asked to begin a saturation */
+static int amok_bw_cb_sat_start(gras_msg_cb_ctx_t ctx, void *payload){
+ sat_request_t request = *(sat_request_t*)payload;
+ gras_socket_t expeditor = gras_msg_cb_ctx_from(ctx);
+
+ VERB4("Asked by %s:%d to start a saturation to %s:%d",
+ gras_socket_peer_name(expeditor),gras_socket_peer_port(expeditor),
+ request->host.name,request->host.port);
+
+ gras_msg_rpcreturn(60,ctx, NULL);
+ amok_bw_saturate_begin(request->host.name,request->host.port,
+ request->msg_size, request->duration,
+ NULL,NULL);
+ free(request->host.name);
+ free(request);
+ return 1;
+}
- if ((errcode=gras_msg_wait(120,GRASMSG_SAT_BEGUN,&answer))) {
- fprintf(stderr,"cbSatStart(): Error %s encountered while waiting for the ACK.\n",
- xbt_error_name(errcode));
- gras_sock_close(sock);
+/**
+ * @brief Start saturating between the current process and the designated peer
+ *
+ * Note that the only way to break this function before the end of the timeout
+ * is to have a remote host calling amok_bw_saturate_stop to this process.
+ */
+void amok_bw_saturate_begin(const char* to_name,unsigned int to_port,
+ unsigned int msg_size, double duration,
+ /*out*/ double *elapsed_res, double *bw_res) {
+
+ xbt_ex_t e;
- grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
- "cbSatStart: Severe error: Cannot send error status to requester!!\n",
- errcode,
- "Cannot receive the ACK.\n");
- return 1;
- }
+ gras_socket_t peer_cmd = gras_socket_client(to_name, to_port);
+ gras_msg_cb_ctx_t ctx;
- if((errcode=gras_msg_ctn(answer,0,0,msgError_t).errcode)) {
- fprintf(stderr,"cbSatStart(): Peer reported error %s (%s).\n",
- xbt_error_name(errcode),gras_msg_ctn(answer,0,0,msgError_t).errmsg);
-
- grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
- "cbSatStart: Severe error: Cannot send error status to requester!!\n",
- errcode,
- "Peer repported '%s'.\n",gras_msg_ctn(answer,0,0,msgError_t).errmsg);
- gras_msg_free(answer);
- gras_sock_close(sock);
- return 1;
- }
+ gras_socket_t meas;
- raw_port=gras_msg_ctn(answer,1,0,SatExp_t).port;
+ s_gras_msg_t msg_got;
- if ((errcode=gras_rawsock_client_open(to_name,raw_port,msgSize,&raw))) {
- fprintf(stderr,"cbSatStart(): Error %s while opening raw socket to %s:%d.\n",
- xbt_error_name(errcode),to_name,gras_msg_ctn(answer,1,0,SatExp_t).port);
+ unsigned int packet_sent=0;
+ double start,elapsed=-1; /* timer */
+ double bw;
- grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
- "cbSatStart: Severe error: Cannot send error status to requester!!\n",
- errcode,"Cannot open raw socket.\n");
- gras_sock_close(sock);
- return 1;
- }
+ volatile int saturate_further; /* boolean in the main loop */
- /* send a train of data before repporting that XP is started */
- if ((errcode=gras_rawsock_send(raw,msgSize,msgSize))) {
- fprintf(stderr,"cbSatStart: Failure %s during raw send\n",xbt_error_name(errcode));
- grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
- "cbSatStart: Severe error: Cannot send error status to requester!!\n",
- errcode,"Cannot raw send.\n");
- gras_sock_close(sock);
- gras_rawsock_close(raw);
- return 1;
- }
-
- grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
- "cbSatStart: Severe error: Cannot send error status to requester!!\n",
- no_error,"Saturation started");
- gras_msg_free(answer);
- gras_msg_free(msg);
-
- /* Do the saturation until we get a SAT_STOP message or until we timeout the whole XP*/
- start=gras_time();
- while (gras_msg_wait(0,GRASMSG_SAT_STOP,&msg)==timeout_error &&
- gras_time()-start < timeout) {
- if ((errcode=gras_rawsock_send(raw,msgSize,msgSize))) {
- fprintf(stderr,"cbSatStart: Failure %s during raw send\n",xbt_error_name(errcode));
- /* our error message do not interess anyone. SAT_STOP will do nothing. */
- gras_sock_close(sock);
- gras_rawsock_close(raw);
- return 1;
- }
- }
- if (gras_time()-start > timeout) {
- fprintf(stderr,"The saturation experiment did timeout. Stop it NOW\n");
- gras_sock_close(sock);
- gras_rawsock_close(raw);
- return 1;
+ /* Negociate the saturation with the peer */
+ sat_request_t request = xbt_new(s_sat_request_t,1);
+
+ DEBUG2("Begin to saturate to %s:%d",to_name,to_port);
+ memset(&msg_got,0,sizeof(msg_got));
+
+ request->msg_size = msg_size;
+ request->duration = duration;
+ request->host.name = NULL;
+ request->host.port = 0;
+
+ ctx = gras_msg_rpc_async_call(peer_cmd, 60,
+ gras_msgtype_by_name("amok_bw_sat begin"),
+ &request);
+ free(request);
+ gras_msg_rpc_async_wait(ctx,&request);
+ meas=gras_socket_client_ext( to_name, request->host.port,
+ 0 /*bufsize: auto*/,
+ 1 /*meas: true*/);
+ free(request);
+
+ gras_socket_close(peer_cmd);
+ INFO2("Saturation from %s to %s started",gras_os_myname(),to_name);
+
+ /* Start experiment */
+ start=gras_os_time();
+
+ do {
+ /* do send it */
+ gras_socket_meas_send(meas,120,msg_size,msg_size);
+ packet_sent++;
+
+ /* Check whether someone asked us to stop saturation */
+ saturate_further = 0;
+ TRY {
+ gras_msg_wait_ext(0/*no wait*/,gras_msgtype_by_name("amok_bw_sat stop"),
+ NULL /* accept any sender */,
+ NULL, NULL, /* No specific filter */
+ &msg_got);
+ } CATCH(e) {
+ if (e.category == timeout_error) {
+ saturate_further=1;
+ memset(&msg_got,0,sizeof(msg_got)); /* may be overprotectiv here */
+ }
+ xbt_ex_free(e);
+ }
+
+ /* Check whether the experiment has to be terminated by now */
+ elapsed=gras_os_time()-start;
+ VERB2("elapsed %f duration %f",elapsed, duration);
+
+ } while (saturate_further && elapsed < duration);
+
+ bw = ((double)(packet_sent*msg_size)) / elapsed;
+
+ if (elapsed_res)
+ *elapsed_res = elapsed;
+ if (bw_res)
+ *bw_res = bw;
+
+ if (elapsed >= duration) {
+ INFO2("Saturation experiment terminated. Took %f sec (achieving %f kb/s)",
+ elapsed, bw/1024.0);
}
- /* Handle the SAT_STOP which broke the previous while */
-
- if ((errcode=gras_msg_new_and_send(sock, GRASMSG_SAT_END,0))) {
- fprintf(stderr,"cbSatStart(): Cannot tell peer to stop saturation\n");
-
- grasRepportError(msg->sock,GRASMSG_SAT_STOPPED,1,
- "cbSatStart: Severe error: Cannot send error status to requester!!\n",
- errcode,"Sending SAT_END to peer failed.\n");
- gras_sock_close(sock);
- gras_rawsock_close(raw);
- return 1;
+ /* If someone stopped us, inform him about the achieved bandwidth */
+ if (msg_got.expe) {
+ bw_res_t answer = xbt_new(s_bw_res_t,1);
+ s_gras_msg_cb_ctx_t ctx;
+
+ INFO3("Saturation from %s to %s stopped by %s",
+ gras_os_myname(),to_name, gras_socket_peer_name(msg_got.expe));
+ answer->timestamp=gras_os_time();
+ answer->sec=elapsed;
+ answer->bw=bw;
+
+ ctx.expeditor = msg_got.expe;
+ ctx.ID = msg_got.ID;
+ ctx.msgtype = msg_got.type;
+
+ gras_msg_rpcreturn(60,&ctx,&answer);
+ free(answer);
+ } else {
+ INFO3("Saturation from %s to %s elapsed after %f sec",
+ gras_os_myname(),to_name,duration);
}
- if ((errcode=gras_msg_wait(60,GRASMSG_SAT_ENDED,&answer))) {
- fprintf(stderr,"cbSatStart(): Peer didn't ACK the end\n");
-
- grasRepportError(msg->sock,GRASMSG_SAT_STOPPED,1,
- "cbSatStart: Severe error: Cannot send error status to requester!!\n",
- errcode,"Receiving SAT_ENDED from peer failed.\n");
- gras_sock_close(sock);
- gras_rawsock_close(raw);
- return 1;
- }
- grasRepportError(msg->sock,GRASMSG_SAT_STOPPED,1,
- "cbSatStart: Severe error: Cannot send error status to requester!!\n",
- no_error,"");
-
- gras_sock_close(sock);
- gras_rawsock_close(raw);
- gras_msg_free(answer);
- gras_msg_free(msg);
-
- return 1;
+ gras_socket_close(meas);
}
-int grasbw_cbSatBegin(gras_msg_t *msg) {
- gras_rawsock_t *raw;
- xbt_error_t errcode;
- double start; /* timer */
- /* request */
- unsigned int msgSize=gras_msg_ctn(msg,0,0,SatExp_t).msgSize;
- unsigned int timeout=gras_msg_ctn(msg,0,0,SatExp_t).timeout;
- /* answer */
- SatExp_t *request;
- msgError_t *error;
-
- if (!(request=(SatExp_t*)malloc(sizeof(SatExp_t))) ||
- !(error=(msgError_t *)malloc(sizeof(msgError_t)))) {
- fprintf(stderr,"cbSatBegin(): Malloc error\n");
- grasRepportError(msg->sock,GRASMSG_SAT_BEGUN,2,
- "cbSatBegin: Severe error: Cannot send error status to requester!!\n",
- malloc_error,"Malloc error");
- return 1;
- }
-
- if ((errcode=gras_rawsock_server_open(6666,8000,msgSize,&raw))) {
- fprintf(stderr,"cbSatBegin(): Error %s encountered while opening a raw socket\n",
- xbt_error_name(errcode));
- grasRepportError(msg->sock,GRASMSG_SAT_BEGUN,2,
- "cbSatBegin: Severe error: Cannot send error status to requester!!\n",
- errcode,"Cannot open raw socket");
- return 1;
+/* Sender will saturate link to us */
+static int amok_bw_cb_sat_begin(gras_msg_cb_ctx_t ctx, void *payload){
+ sat_request_t request=*(sat_request_t*)payload;
+ sat_request_t answer=xbt_new0(s_sat_request_t,1);
+ volatile int saturate_further = 1;
+ xbt_ex_t e;
+ gras_socket_t measMaster=NULL,meas=NULL;
+
+ int port=6000;
+ while (port <= 10000 && measMaster == NULL) {
+ TRY {
+ measMaster = gras_socket_server_ext(port,
+ 0 /*bufsize: auto*/,
+ 1 /*meas: true*/);
+ } CATCH(e) {
+ measMaster = NULL;
+ if (port < 10000)
+ xbt_ex_free(e);
+ else
+ RETHROW0("Error encountered while opening a measurement server socket: %s");
+ }
+ if (measMaster == NULL)
+ port++; /* prepare for a new loop */
}
- request->port=gras_rawsock_get_peer_port(raw);
- request->msgSize=msgSize;
- error->errcode=no_error;
- error->errmsg[0]='\0';
- if ((errcode=gras_msg_new_and_send(msg->sock,GRASMSG_SAT_BEGUN,2,
- error,1,
- request,1))) {
- fprintf(stderr,"cbSatBegin(): Error %s encountered while send ACK to peer\n",
- xbt_error_name(errcode));
- return 1;
+ answer->host.port=port;
+
+ gras_msg_rpcreturn(60, ctx, &answer);
+ free(answer);
+
+ gras_os_sleep(5); /* Wait for the accept */
+
+ TRY {
+ meas = gras_socket_meas_accept(measMaster);
+ DEBUG0("saturation handshake answered");
+ } CATCH(e) {
+ gras_socket_close(measMaster);
+ RETHROW0("Error during saturation handshake: %s");
+ }
+
+ while (saturate_further) {
+ TRY {
+ gras_socket_meas_recv(meas,120,request->msg_size,request->msg_size);
+ } CATCH(e) {
+ saturate_further = 0;
+ xbt_ex_free(e);
+ }
}
- gras_msg_free(msg);
-
- start=gras_time();
- while (gras_msg_wait(0,GRASMSG_SAT_END,&msg)==timeout_error &&
- gras_time() - start < timeout) {
- errcode=gras_rawsock_recv(raw,msgSize,msgSize,1);
- if (errcode != timeout_error && errcode != no_error) {
- fprintf(stderr,"cbSatBegin: Failure %s during raw receive\n",xbt_error_name(errcode));
- /* our error message do not interess anyone. SAT_END will do nothing. */
- /* (if timeout'ed, it may be because the sender stopped emission. so survive it) */
- return 1;
- }
- }
- if (gras_time()-start > timeout) {
- fprintf(stderr,"The saturation experiment did timeout. Stop it NOW.\n");
- gras_rawsock_close(raw);
- return 1;
- }
-
- grasRepportError(msg->sock,GRASMSG_SAT_ENDED,1,
- "cbSatBegin: Cannot send SAT_ENDED.\n",
- no_error,"");
- gras_rawsock_close(raw);
- gras_msg_free(msg);
+ INFO1("Saturation stopped on %s",gras_os_myname());
+ gras_socket_close(meas);
+ if (gras_if_RL()) /* On SG, accepted=master */
+ gras_socket_close(measMaster);
+ free(request);
return 1;
}
-xbt_error_t grasbw_saturate_stop(const char* from_name,unsigned int from_port,
- const char* to_name,unsigned int to_port) {
- xbt_error_t errcode;
- gras_sock_t *sock;
- gras_msg_t *answer;
-
- if((errcode=gras_sock_client_open(from_name,from_port,&sock))) {
- fprintf(stderr,"saturate_stop(): Error %s encountered while contacting peer\n",
- xbt_error_name(errcode));
- return errcode;
- }
-
- if ((errcode=gras_msg_new_and_send(sock,GRASMSG_SAT_STOP,0))) {
- fprintf(stderr,"saturate_stop(): Error %s encountered while sending request\n",
- xbt_error_name(errcode));
- gras_sock_close(sock);
- return errcode;
- }
-
- if ((errcode=gras_msg_wait(120,GRASMSG_SAT_STOPPED,&answer))) {
- fprintf(stderr,"saturate_stop(): Error %s encountered while receiving ACK\n",
- xbt_error_name(errcode));
- gras_sock_close(sock);
- return errcode;
- }
-
- if((errcode=gras_msg_ctn(answer,0,0,msgError_t).errcode)) {
- fprintf(stderr,"saturate_stop(): Peer reported error %s (%s).\n",
- xbt_error_name(errcode),gras_msg_ctn(answer,0,0,msgError_t).errmsg);
- gras_msg_free(answer);
- gras_sock_close(sock);
- return errcode;
- }
-
- gras_msg_free(answer);
- gras_sock_close(sock);
-
- return no_error;
+/**
+ * @brief Ask 'from_name:from_port' to stop any saturation experiments
+ * @param from_name: Name of the host we are asking to do a experiment with (to_name:to_port)
+ * @param from_port: port on which the process we are asking for an experiment is listening
+ * @param time: the duration of the experiment
+ * @param bw: the achieved bandwidth
+ *
+ */
+void amok_bw_saturate_stop(const char* from_name,unsigned int from_port,
+ /*out*/ double *time, double *bw) {
+
+ gras_socket_t sock = gras_socket_client(from_name,from_port);
+ bw_res_t answer;
+ gras_msg_rpccall(sock,60,gras_msgtype_by_name("amok_bw_sat stop"),NULL,&answer);
+ gras_socket_close(sock);
+ if (time) *time=answer->sec;
+ if (bw) *bw =answer->bw;
}
-#endif
