source: src/JobMarket/Operations/Controllers/GetNextJobIdOperation.cpp@ 404d2b

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Last change on this file since 404d2b was 404d2b, checked in by Frederik Heber <heber@…>, 8 years ago

Squashed 'ThirdParty/JobMarket/' content from commit e194722

git-subtree-dir: ThirdParty/JobMarket
git-subtree-split: e19472277e62c493f6c10f1483fe21e64c1039e9

  • Property mode set to 100644
File size: 4.2 KB
Line 
1/*
2 * Project: JobMarket
3 * Description: asynchronous Server/Controller/Client-approach to parallel computing, based on boost::asio
4 * Copyright (C) 2012 Frederik Heber. All rights reserved.
5 *
6 */
7
8/*
9 * GetNextJobIdOperation.cpp
10 *
11 * Created on: Feb 16, 2012
12 * Author: heber
13 */
14
15// include config.h
16#ifdef HAVE_CONFIG_H
17#include <config.h>
18#endif
19
20// boost asio needs specific operator new
21#include <boost/asio.hpp>
22
23#include "CodePatterns/MemDebug.hpp"
24
25#include "JobMarket/Operations/Controllers/GetNextJobIdOperation.hpp"
26
27#include <boost/bind.hpp>
28#include <iostream>
29#include "JobMarket/Connection.hpp" // Must come before boost/serialization headers.
30#include <boost/serialization/vector.hpp>
31#include "CodePatterns/Info.hpp"
32#include "CodePatterns/Log.hpp"
33#include "JobMarket/ControllerChoices.hpp"
34#include "JobMarket/types.hpp"
35
36/** Handle connect operation to send number of done jobs.
37 *
38 * \param e error code if something went wrong
39 * \param endpoint_iterator endpoint of the connection
40 */
41void GetNextJobIdOperation::handle_connect(const boost::system::error_code& e,
42 boost::asio::ip::tcp::resolver::iterator endpoint_iterator)
43{
44 DEBUG_FUNCTION_ENTRYEXIT
45 if (!e)
46 {
47 // Successfully established connection. Give choice.
48 enum ControllerChoices choice = GetNextJobId;
49 connection_.async_write(choice,
50 boost::bind(&GetNextJobIdOperation::handle_SendNumberIds, this,
51 boost::asio::placeholders::error));
52 } else if (endpoint_iterator != boost::asio::ip::tcp::resolver::iterator()) {
53 // Try the next endpoint.
54 connection_.socket().close();
55 boost::asio::ip::tcp::endpoint endpoint = *endpoint_iterator;
56 connection_.socket().async_connect(endpoint,
57 boost::bind(&GetNextJobIdOperation::handle_connect, this,
58 boost::asio::placeholders::error, ++endpoint_iterator));
59 } else {
60 // An error occurred. Log it and return. Since we are not starting a new
61 // operation the io_service will run out of work to do and the client will
62 // exit.
63 ELOG(1, e.message());
64 AsyncOperation::handle_FinishOperation(e);
65 }
66}
67
68/** Callback function when sending number of desired job ids.
69 *
70 * \param e error code if something went wrong
71 */
72void GetNextJobIdOperation::handle_SendNumberIds(const boost::system::error_code& e)
73{
74 DEBUG_FUNCTION_ENTRYEXIT
75 if (!e)
76 {
77 // The connection::async_read() function will automatically
78 // decode the data that is written to the underlying socket.
79 LOG(1, "INFO: Requesting " << NumberIds << " ids ...");
80 connection_.async_write(NumberIds,
81 boost::bind(&GetNextJobIdOperation::handle_ReceiveNextIds, this,
82 boost::asio::placeholders::error));
83 }
84 else
85 {
86 // An error occurred.
87 ELOG(1, e.message());
88 AsyncOperation::handle_FinishOperation(e);
89 }
90}
91
92/** Callback function when doneJobs have been received.
93 *
94 * \param e error code if something went wrong
95 */
96void GetNextJobIdOperation::handle_ReceiveNextIds(const boost::system::error_code& e)
97{
98 DEBUG_FUNCTION_ENTRYEXIT
99 if (!e)
100 {
101 // The connection::async_read() function will automatically
102 // decode the data that is written to the underlying socket.
103 LOG(1, "INFO: Obtaining a bunch of available job ids ...");
104 connection_.async_read(ids,
105 boost::bind(&GetNextJobIdOperation::handle_FinishOperation, this,
106 boost::asio::placeholders::error));
107 }
108 else
109 {
110 // An error occurred.
111 ELOG(1, e.message());
112 AsyncOperation::handle_FinishOperation(e);
113 }
114}
115
116/** Callback function when an operation has been completed.
117 *
118 * \param e error code if something went wrong
119 */
120void GetNextJobIdOperation::handle_FinishOperation(const boost::system::error_code& e)
121{
122 DEBUG_FUNCTION_ENTRYEXIT
123
124 // place id into nextids
125 LOG(1, "INFO: Received " << ids.size() << " job ids.");
126 nextids.insert(nextids.end(), ids.begin(), ids.end());
127 ids.clear();
128 NumberIds = 0;
129
130 // and finish operation
131 AsyncOperation::handle_FinishOperation(e);
132}
133
134/** Getter for nextid.
135 *
136 * \sa checkResults()
137 * \param next available JobId_t
138 */
139size_t GetNextJobIdOperation::getNextId()
140{
141 ASSERT( nextids.size() != (size_t)0,
142 "GetNextJobIdOperation::getNextId() - no next id available.");
143 const JobId_t availableid = nextids.front();
144 nextids.pop_front();
145 return availableid;
146}
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