1/*
2 * Legal Notice
3 *
4 * This document and associated source code (the "Work") is a part of a
5 * benchmark specification maintained by the TPC.
6 *
7 * The TPC reserves all right, title, and interest to the Work as provided
8 * under U.S. and international laws, including without limitation all patent
9 * and trademark rights therein.
10 *
11 * No Warranty
12 *
13 * 1.1 TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE INFORMATION
14 * CONTAINED HEREIN IS PROVIDED "AS IS" AND WITH ALL FAULTS, AND THE
15 * AUTHORS AND DEVELOPERS OF THE WORK HEREBY DISCLAIM ALL OTHER
16 * WARRANTIES AND CONDITIONS, EITHER EXPRESS, IMPLIED OR STATUTORY,
17 * INCLUDING, BUT NOT LIMITED TO, ANY (IF ANY) IMPLIED WARRANTIES,
18 * DUTIES OR CONDITIONS OF MERCHANTABILITY, OF FITNESS FOR A PARTICULAR
19 * PURPOSE, OF ACCURACY OR COMPLETENESS OF RESPONSES, OF RESULTS, OF
20 * WORKMANLIKE EFFORT, OF LACK OF VIRUSES, AND OF LACK OF NEGLIGENCE.
21 * ALSO, THERE IS NO WARRANTY OR CONDITION OF TITLE, QUIET ENJOYMENT,
22 * QUIET POSSESSION, CORRESPONDENCE TO DESCRIPTION OR NON-INFRINGEMENT
23 * WITH REGARD TO THE WORK.
24 * 1.2 IN NO EVENT WILL ANY AUTHOR OR DEVELOPER OF THE WORK BE LIABLE TO
25 * ANY OTHER PARTY FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO THE
26 * COST OF PROCURING SUBSTITUTE GOODS OR SERVICES, LOST PROFITS, LOSS
27 * OF USE, LOSS OF DATA, OR ANY INCIDENTAL, CONSEQUENTIAL, DIRECT,
28 * INDIRECT, OR SPECIAL DAMAGES WHETHER UNDER CONTRACT, TORT, WARRANTY,
29 * OR OTHERWISE, ARISING IN ANY WAY OUT OF THIS OR ANY OTHER AGREEMENT
30 * RELATING TO THE WORK, WHETHER OR NOT SUCH AUTHOR OR DEVELOPER HAD
31 * ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
32 *
33 * Contributors
34 * - Christopher Chan-Nui
35 */
36
37#include "utilities/condition.h"
38
39#include <cstring>
40
41#include <iostream>
42#include <sstream>
43#include <stdexcept>
44#include <cerrno>
45#include <cstdlib>
46#ifndef WIN32
47#include <sys/time.h>
48#endif
49
50#include "utilities/error.h"
51
52using std::exit;
53using std::strerror;
54
55namespace TPCE {
56
57#ifdef WIN32
58
59CCondition::CCondition(CMutex &pairedmutex) : mutex_(pairedmutex), cond_() {
60 InitializeConditionVariable(&cond_);
61}
62
63#else
64
65CCondition::CCondition(CMutex &pairedmutex) : mutex_(pairedmutex), cond_() {
66 int rc = pthread_cond_init(&cond_, NULL);
67 if (rc != 0) {
68 std::ostringstream strm;
69 strm << "pthread_cond_init error: " << strerror(rc) << "(" << rc << ")";
70 throw std::runtime_error(strm.str());
71 }
72}
73#endif
74
75void CCondition::lock() {
76 mutex_.lock();
77}
78
79void CCondition::unlock() {
80 mutex_.unlock();
81}
82
83#ifdef WIN32
84
85void CCondition::wait() const {
86 SleepConditionVariableCS(&cond_, mutex_.mutex(), INFINITE);
87}
88
89void CCondition::signal() {
90 WakeConditionVariable(&cond_);
91}
92
93void CCondition::broadcast() {
94 WakeAllConditionVariable(&cond_);
95}
96
97bool CCondition::timedwait(long timeout /*us*/) const {
98 if (timeout < 0) {
99 wait();
100 return true;
101 }
102
103 int rc = SleepConditionVariableCS(&cond_, mutex_.mutex(), timeout / 1000);
104 if (rc == 0) {
105 int rc2 = GetLastError();
106 if (rc2 == WAIT_TIMEOUT) {
107 return false;
108 } else {
109 std::ostringstream strm;
110 strm << "SleepConditionVariableCS error: " << strerror(rc) << "(" << rc << ")";
111 throw std::runtime_error(strm.str());
112 }
113 }
114 return true;
115}
116
117#else
118
119void CCondition::wait() const {
120 int rc = pthread_cond_wait(&cond_, mutex_.mutex());
121 if (rc != 0) {
122 std::ostringstream strm;
123 strm << "pthread_cond_wait error: " << strerror(rc) << "(" << rc << ")";
124 throw std::runtime_error(strm.str());
125 }
126}
127
128void CCondition::signal() {
129 int rc = pthread_cond_signal(&cond_);
130 if (rc != 0) {
131 std::ostringstream strm;
132 strm << "pthread_cond_signal error: " << strerror(rc) << "(" << rc << ")";
133 throw std::runtime_error(strm.str());
134 }
135}
136
137void CCondition::broadcast() {
138 int rc = pthread_cond_broadcast(&cond_);
139 if (rc != 0) {
140 std::ostringstream strm;
141 strm << "pthread_cond_broadcast error: " << strerror(rc) << "(" << rc << ")";
142 throw std::runtime_error(strm.str());
143 }
144}
145
146bool CCondition::timedwait(const struct timespec &timeout) const {
147 int rc = pthread_cond_timedwait(&cond_, mutex_.mutex(), &timeout);
148 if (rc == ETIMEDOUT) {
149 return false;
150 } else if (rc != 0) {
151 std::ostringstream strm;
152 strm << "pthread_cond_timedwait error: " << strerror(rc) << "(" << rc << ")";
153 throw std::runtime_error(strm.str());
154 }
155 return true;
156}
157
158bool CCondition::timedwait(long timeout /*us*/) const {
159 if (timeout < 0) {
160 wait();
161 return true;
162 }
163
164 const int nsec_in_sec = 1000000000;
165 const int usec_in_sec = 1000000;
166 const int usec_in_nsec = 1000;
167 struct timeval tv;
168 struct timespec ts;
169
170 gettimeofday(&tv, NULL);
171
172 ts.tv_sec = tv.tv_sec + static_cast<long>(timeout / usec_in_sec);
173 ts.tv_nsec = (tv.tv_usec + static_cast<long>(timeout % usec_in_sec) * usec_in_nsec);
174 if (ts.tv_nsec > nsec_in_sec) {
175 ts.tv_sec += ts.tv_nsec / nsec_in_sec;
176 ts.tv_nsec = ts.tv_nsec % nsec_in_sec;
177 }
178 return timedwait(ts);
179}
180#endif
181
182} // namespace TPCE
183