blocxx
ThreadCounter.cpp
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32 
33 
38 #include "blocxx/BLOCXX_config.h"
39 #include "blocxx/ThreadCounter.hpp"
40 #include "blocxx/NonRecursiveMutexLock.hpp"
41 #include "blocxx/Assertion.hpp"
42 #include "blocxx/TimeoutException.hpp"
43 #include "blocxx/Timeout.hpp"
44 
45 namespace BLOCXX_NAMESPACE
46 {
47 
48 ThreadCounter::ThreadCounter(Int32 maxThreads)
49  : m_maxThreads(maxThreads)
50  , m_runCount(0)
51 {}
52 ThreadCounter::~ThreadCounter()
53 {}
54 void
55 ThreadCounter::incThreadCount(UInt32 sTimeout, UInt32 usTimeout)
56 {
57  incThreadCount(Timeout::relative(sTimeout + static_cast<float>(usTimeout) * 1000000.0));
58 }
59 void
60 ThreadCounter::incThreadCount(const Timeout& timeout)
61 {
62  NonRecursiveMutexLock l(m_runCountGuard);
63  while (m_runCount >= m_maxThreads)
64  {
65  if (!m_runCountCondition.timedWait(l, timeout))
66  {
67  BLOCXX_THROW(TimeoutException, "ThreadCounter::incThreadCount timedout");
68  }
69  }
70  ++m_runCount;
71 }
72 void
73 ThreadCounter::decThreadCount()
74 {
75  NonRecursiveMutexLock l(m_runCountGuard);
76  BLOCXX_ASSERT(m_runCount > 0);
77  --m_runCount;
78  m_runCountCondition.notifyAll();
79 }
80 Int32
81 ThreadCounter::getThreadCount()
82 {
83  NonRecursiveMutexLock l(m_runCountGuard);
84  return m_runCount;
85 }
86 void
87 ThreadCounter::waitForAll(UInt32 sTimeout, UInt32 usTimeout)
88 {
89  waitForAll(Timeout::relative(sTimeout + static_cast<float>(usTimeout) * 1000000.0));
90 }
91 
92 void
93 ThreadCounter::waitForAll(const Timeout& timeout)
94 {
95  NonRecursiveMutexLock runCountLock(m_runCountGuard);
96  while (m_runCount > 0)
97  {
98  if (!m_runCountCondition.timedWait(runCountLock, timeout))
99  {
100  BLOCXX_THROW(TimeoutException, "ThreadCounter::waitForAll timedout");
101  }
102  }
103 }
104 void
105 ThreadCounter::setMax(Int32 maxThreads)
106 {
107  NonRecursiveMutexLock runCountLock(m_runCountGuard);
108  m_maxThreads = maxThreads;
109  m_runCountCondition.notifyAll();
110 }
111 ThreadCountDecrementer::ThreadCountDecrementer(ThreadCounterRef const& x)
112  : m_counter(x)
113 {}
114 ThreadCountDecrementer::~ThreadCountDecrementer()
115 {}
116 void
117 ThreadCountDecrementer::doNotifyThreadDone(Thread *)
118 {
119  m_counter->decThreadCount();
120 }
121 
122 } // end namespace BLOCXX_NAMESPACE
123 
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