src/Events/Events_LongOp.cpp

   1 // File:        Events_LongOp.cpp
   2 // Created:     29 Jul 2014
   3 // Author:      Mikhail PONIKAROV
   4
   5 #include <Events_LongOp.h>
   6 #include <Events_Loop.h>
   7
   8 /// senders of the long operation collected, ends the long operation event only
   9 /// if all senders are stopped
  10 std::map<void*, int> MY_SENDERS;
  11
  12 Events_LongOp::Events_LongOp(void* theSender)
  13  : Events_Message(Events_LongOp::errorID(), theSender)
  14 {
  15 }
  16
  17 Events_LongOp::~Events_LongOp()
  18 {
  19 }
  20
  21 Events_ID Events_LongOp::errorID()
  22 {
  23   Events_Loop* aLoop = Events_Loop::loop();
  24   return aLoop->eventByName("LongOperation");
  25 }
  26
  27 void Events_LongOp::start(void* theSender)
  28 {
  29   if (MY_SENDERS.empty()) {
  30     Events_LongOp anError(theSender);
  31     Events_Loop::loop()->send(anError);
  32   }
  33   if (MY_SENDERS.find(theSender) == MY_SENDERS.end())
  34     MY_SENDERS[theSender] = 1;
  35   else
  36     MY_SENDERS[theSender]++;
  37 }
  38
  39 void Events_LongOp::end(void* theSender)
  40 {
  41   if (MY_SENDERS.find(theSender) != MY_SENDERS.end()) {
  42     int aCount = MY_SENDERS[theSender];
  43     if (aCount <= 1) MY_SENDERS.erase(theSender);
  44     else MY_SENDERS[theSender] = aCount - 1;
  45   }
  46   if (MY_SENDERS.empty()) {
  47     Events_LongOp anError(theSender);
  48     Events_Loop::loop()->send(anError);
  49   }
  50 }
  51
  52 bool Events_LongOp::isPerformed()
  53 {
  54   return !MY_SENDERS.empty();
  55 }