/* amok_saturate - Link saturating facilities (for ALNeM's BW testing) */
-/* Copyright (c) 2004 Martin Quinson. All rights reserved. */
+/* Copyright (c) 2003, 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 "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);
-#if 0
+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);
+
+
+void amok_bw_sat_init(void) {
+ 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, NULL);
+
+}
+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);
+}
+
/* ***************************************************************************
* 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;
+/**
+ * @brief Ask 'from_name:from_port' to stop saturating going to to_name:to_name.
+ *
+ * @from_name: Name of the host we are asking to do a experiment with (to_name:to_port)
+ * @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)
+ * @to_name: Name of the host with which we should conduct the experiment
+ * @to_port: port on which the peer process is listening for message
+ * @msg_size: Size of each message sent.
+ * @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;
- 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;
+ gras_msg_rpccall(sock,60,gras_msgtype_by_name("amok_bw_sat start"),&request, NULL);
- strcpy(target->host,to_name);
- target->port=to_port;
+ free(request);
+ gras_socket_close(sock);
+}
- 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;
+/* 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_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;
+}
+
+/**
+ * @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;
+
+ gras_socket_t peer_cmd = gras_socket_client(to_name, to_port);
+ gras_msg_cb_ctx_t ctx;
+
+ gras_socket_t meas;
+
+ s_gras_msg_t msg_got;
+
+ unsigned int packet_sent=0;
+ double start,elapsed=-1; /* timer */
+ double bw;
+
+ volatile int saturate_further; /* boolean in the main loop */
+
+ /* 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;
+ INFO2("elapsed %f duration %f",elapsed, duration);
+
+ } while (saturate_further && elapsed < duration);
+
+ INFO2("Saturation from %s to %s stopped",gras_os_myname(),to_name);
+ 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);
}
- 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 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;
+
+ 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);
}
+
+ gras_socket_close(meas);
+}
- 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;
+/* 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 */
+ }
+ 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);
+ }
}
+ INFO1("Saturation stopped on %s",gras_os_myname());
+ gras_socket_close(meas);
+ gras_socket_close(measMaster);
+ free(request);
+ return 1;
+}
- gras_msg_free(answer);
- gras_sock_close(sock);
- return no_error;
+/**
+ * @brief Ask 'from_name:from_port' to stop any saturation experiments
+ * @from_name: Name of the host we are asking to do a experiment with (to_name:to_port)
+ * @from_port: port on which the process we are asking for an experiment is listening
+ * @time: the duration of the experiment
+ * @bw: the achieved bandwidth
+ *
+ */
+void amok_bw_saturate_stop(const char* from_name,unsigned int from_port,
+ /*out*/ unsigned int *time, unsigned int *bw) {
+
+ gras_socket_t sock = gras_socket_client(from_name,from_port);
+ gras_msg_rpccall(sock,60,gras_msgtype_by_name("amok_bw_sat stop"),NULL,NULL);
+ gras_socket_close(sock);
}
+
+#if 0
int grasbw_cbSatStart(gras_msg_t *msg) {
gras_rawsock_t *raw;
gras_sock_t *sock;
/* 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);
- */
/* Negociate the saturation with the peer */
if((errcode=gras_sock_client_open(to_name,to_port,&sock))) {
