src/s4u/s4u_comm.cpp

   1 /* Copyright (c) 2006-2015. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "xbt/log.h"
   8 #include "src/msg/msg_private.h"
   9 #include "src/msg/msg_mailbox.h"
  10
  11 #include "simgrid/s4u/comm.hpp"
  12
  13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_comm,s4u_async,"S4U asynchronous communications");
  14 using namespace simgrid;
  15
  16 s4u::Comm::~Comm() {
  17
  18 }
  19
  20 s4u::Comm &s4u::Comm::send_init(s4u::Actor *sender, s4u::Mailbox &chan) {
  21         s4u::Comm *res = new s4u::Comm();
  22         res->p_sender = sender;
  23         res->p_mailbox = &chan;
  24
  25         return *res;
  26 }
  27 s4u::Comm &s4u::Comm::recv_init(s4u::Actor *receiver, s4u::Mailbox &chan) {
  28         s4u::Comm *res = new s4u::Comm();
  29         res->p_receiver = receiver;
  30         res->p_mailbox = &chan;
  31
  32         return *res;
  33 }
  34
  35 void s4u::Comm::setRate(double rate) {
  36         xbt_assert(p_state==inited);
  37         p_rate = rate;
  38 }
  39
  40 void s4u::Comm::setSrcData(void * buff) {
  41         xbt_assert(p_state==inited);
  42         xbt_assert(p_dstBuff == NULL, "Cannot set the src and dst buffers at the same time");
  43         p_srcBuff = buff;
  44 }
  45 void s4u::Comm::setSrcDataSize(size_t size){
  46         xbt_assert(p_state==inited);
  47         p_srcBuffSize = size;
  48 }
  49 void s4u::Comm::setSrcData(void * buff, size_t size) {
  50         xbt_assert(p_state==inited);
  51
  52         xbt_assert(p_dstBuff == NULL, "Cannot set the src and dst buffers at the same time");
  53         p_srcBuff = buff;
  54         p_srcBuffSize = size;
  55 }
  56 void s4u::Comm::setDstData(void ** buff) {
  57         xbt_assert(p_state==inited);
  58         xbt_assert(p_srcBuff == NULL, "Cannot set the src and dst buffers at the same time");
  59         p_dstBuff = buff;
  60 }
  61 size_t s4u::Comm::getDstDataSize(){
  62         xbt_assert(p_state==finished);
  63         return p_dstBuffSize;
  64 }
  65 void s4u::Comm::setDstData(void ** buff, size_t size) {
  66         xbt_assert(p_state==inited);
  67
  68         xbt_assert(p_srcBuff == NULL, "Cannot set the src and dst buffers at the same time");
  69         p_dstBuff = buff;
  70         p_dstBuffSize = size;
  71 }
  72
  73 void s4u::Comm::start() {
  74         xbt_assert(p_state == inited);
  75
  76         if (p_srcBuff != NULL) { // Sender side
  77                 p_inferior = simcall_comm_isend(p_sender->getInferior(), p_mailbox->getInferior(), p_remains, p_rate,
  78                                 p_srcBuff, p_srcBuffSize,
  79                                 p_matchFunction, p_cleanFunction, p_copyDataFunction,
  80                                 p_userData, p_detached);
  81         } else if (p_dstBuff != NULL) { // Receiver side
  82                 p_inferior = simcall_comm_irecv(p_receiver->getInferior(), p_mailbox->getInferior(), p_dstBuff, &p_dstBuffSize,
  83                                 p_matchFunction, p_copyDataFunction,
  84                                 p_userData, p_rate);
  85
  86         } else {
  87                 xbt_die("Cannot start a communication before specifying whether we are the sender or the receiver");
  88         }
  89         p_state = started;
  90 }
  91 void s4u::Comm::wait() {
  92         xbt_assert(p_state == started || p_state == inited);
  93
  94         if (p_state == started)
  95                 simcall_comm_wait(p_inferior, -1/*timeout*/);
  96         else {// p_state == inited. Save a simcall and do directly a blocking send/recv
  97                 if (p_srcBuff != NULL) {
  98                         simcall_comm_send(p_sender->getInferior(), p_mailbox->getInferior(), p_remains, p_rate,
  99                                         p_srcBuff, p_srcBuffSize,
 100                                         p_matchFunction, p_copyDataFunction,
 101                                         p_userData, -1 /*timeout*/);
 102                 } else {
 103                         simcall_comm_recv(p_receiver->getInferior(), p_mailbox->getInferior(), p_dstBuff, &p_dstBuffSize,
 104                                         p_matchFunction, p_copyDataFunction,
 105                                         p_userData, -1/*timeout*/, p_rate);
 106                 }
 107         }
 108         p_state = finished;
 109 }
 110 void s4u::Comm::wait(double timeout) {
 111         xbt_assert(p_state == started || p_state == inited);
 112
 113         if (p_state == started) {
 114                 simcall_comm_wait(p_inferior, timeout);
 115                 p_state = finished;
 116                 return;
 117         }
 118
 119         // It's not started yet. Do it in one simcall
 120         if (p_srcBuff != NULL) {
 121                 simcall_comm_send(p_sender->getInferior(), p_mailbox->getInferior(), p_remains, p_rate,
 122                                 p_srcBuff, p_srcBuffSize,
 123                                 p_matchFunction, p_copyDataFunction,
 124                                 p_userData, timeout);
 125         } else { // Receiver
 126                 simcall_comm_recv(p_receiver->getInferior(), p_mailbox->getInferior(), p_dstBuff, &p_dstBuffSize,
 127                                 p_matchFunction, p_copyDataFunction,
 128                                 p_userData, timeout, p_rate);
 129         }
 130         p_state = finished;
 131 }
 132
 133 s4u::Comm &s4u::Comm::send_async(s4u::Actor *sender, Mailbox &dest, void *data, int simulatedSize) {
 134         s4u::Comm &res = s4u::Comm::send_init(sender, dest);
 135
 136         res.setRemains(simulatedSize);
 137         res.p_srcBuff = data;
 138         res.p_srcBuffSize = sizeof(void*);
 139
 140         res.start();
 141         return res;
 142 }
 143
 144 s4u::Comm &s4u::Comm::recv_async(s4u::Actor *receiver, Mailbox &dest, void **data) {
 145         s4u::Comm &res = s4u::Comm::recv_init(receiver, dest);
 146
 147         res.setDstData(data);
 148
 149         res.start();
 150         return res;
 151 }
 152