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annotate druntime/src/common/core/sync/semaphore.d @ 1458:e0b2d67cfe7c

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Added druntime (this should be removed once it works).
author Robert Clipsham <robert@octarineparrot.com>
date Tue, 02 Jun 2009 17:43:06 +0100
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1458
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1 /**
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2 * The semaphore module provides a general use semaphore for synchronization.
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3 *
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4 * Copyright: Copyright Sean Kelly 2005 - 2009.
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5 * License: <a href="http://www.boost.org/LICENSE_1_0.txt>Boost License 1.0</a>.
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6 * Authors: Sean Kelly
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7 *
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8 * Copyright Sean Kelly 2005 - 2009.
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9 * Distributed under the Boost Software License, Version 1.0.
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10 * (See accompanying file LICENSE_1_0.txt or copy at
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11 * http://www.boost.org/LICENSE_1_0.txt)
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12 */
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13 module core.sync.semaphore;
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14
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15
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16 public import core.sync.exception;
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17
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18 version( Win32 )
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19 {
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20 private import core.sys.windows.windows;
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21 }
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22 else version( OSX )
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23 {
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24 private import core.sync.config;
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25 private import core.stdc.errno;
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26 private import core.sys.posix.time;
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27 private import core.sys.osx.mach.semaphore;
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28 }
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29 else version( Posix )
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30 {
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31 private import core.sync.config;
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32 private import core.stdc.errno;
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33 private import core.sys.posix.pthread;
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34 private import core.sys.posix.semaphore;
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35 }
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36
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37
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38 ////////////////////////////////////////////////////////////////////////////////
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39 // Semaphore
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40 //
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41 // void wait();
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42 // void notify();
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43 // bool tryWait();
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44 ////////////////////////////////////////////////////////////////////////////////
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45
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46
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47 /**
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48 * This class represents a general counting semaphore as concieved by Edsger
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49 * Dijkstra. As per Mesa type monitors however, "signal" has been replaced
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50 * with "notify" to indicate that control is not transferred to the waiter when
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51 * a notification is sent.
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52 */
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53 class Semaphore
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54 {
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55 ////////////////////////////////////////////////////////////////////////////
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56 // Initialization
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57 ////////////////////////////////////////////////////////////////////////////
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58
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59
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60 /**
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61 * Initializes a semaphore object with the specified initial count.
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62 *
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63 * Params:
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64 * count = The initial count for the semaphore.
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65 *
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66 * Throws:
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67 * SyncException on error.
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68 */
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69 this( uint count = 0 )
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70 {
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71 version( Win32 )
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72 {
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73 m_hndl = CreateSemaphoreA( null, count, int.max, null );
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74 if( m_hndl == m_hndl.init )
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75 throw new SyncException( "Unable to create semaphore" );
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76 }
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77 else version( OSX )
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78 {
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79 auto rc = semaphore_create( mach_task_self(), &m_hndl, SYNC_POLICY_FIFO, count );
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80 if( rc )
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81 throw new SyncException( "Unable to create semaphore" );
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82 }
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83 else version( Posix )
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84 {
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85 int rc = sem_init( &m_hndl, 0, count );
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86 if( rc )
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87 throw new SyncException( "Unable to create semaphore" );
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88 }
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89 }
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90
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91
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92 ~this()
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93 {
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94 version( Win32 )
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95 {
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96 BOOL rc = CloseHandle( m_hndl );
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97 assert( rc, "Unable to destroy semaphore" );
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98 }
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99 else version( OSX )
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100 {
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101 auto rc = semaphore_destroy( mach_task_self(), m_hndl );
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102 assert( !rc, "Unable to destroy semaphore" );
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103 }
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104 else version( Posix )
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105 {
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106 int rc = sem_destroy( &m_hndl );
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107 assert( !rc, "Unable to destroy semaphore" );
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108 }
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109 }
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110
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111
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112 ////////////////////////////////////////////////////////////////////////////
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113 // General Actions
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114 ////////////////////////////////////////////////////////////////////////////
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115
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116
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117 /**
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118 * Wait until the current count is above zero, then atomically decrement
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119 * the count by one and return.
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120 *
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121 * Throws:
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122 * SyncException on error.
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123 */
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124 void wait()
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125 {
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126 version( Win32 )
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127 {
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128 DWORD rc = WaitForSingleObject( m_hndl, INFINITE );
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129 if( rc != WAIT_OBJECT_0 )
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130 throw new SyncException( "Unable to wait for semaphore" );
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131 }
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132 else version( OSX )
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133 {
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parents:
diff changeset
134 while( true )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
135 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
136 auto rc = semaphore_wait( m_hndl );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
137 if( !rc )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
138 return;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
139 if( rc == KERN_ABORTED && errno == EINTR )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
140 continue;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
141 throw new SyncException( "Unable to wait for semaphore" );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
142 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
143 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
144 else version( Posix )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
145 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
146 while( true )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
147 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
148 if( !sem_wait( &m_hndl ) )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
149 return;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
150 if( errno != EINTR )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
151 throw new SyncException( "Unable to wait for semaphore" );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
152 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
153 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
154 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
155
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
156
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
157 /**
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
158 * Suspends the calling thread until the current count moves above zero or
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
159 * until the supplied time period has elapsed. If the count moves above
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
160 * zero in this interval, then atomically decrement the count by one and
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
161 * return true. Otherwise, return false.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
162 *
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
163 *
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
164 * Params:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
165 * period = The time to wait, in 100 nanosecond intervals. This value may
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
166 * be adjusted to equal to the maximum wait period supported by
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
167 * the target platform if it is too large.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
168 *
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
169 * In:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
170 * period must be non-negative.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
171 *
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
172 * Throws:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
173 * SyncException on error.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
174 *
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
175 * Returns:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
176 * true if notified before the timeout and false if not.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
177 */
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
178 bool wait( long period )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
179 in
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
180 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
181 assert( period >= 0 );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
182 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
183 body
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
184 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
185 version( Win32 )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
186 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
187 enum : uint
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
188 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
189 TICKS_PER_MILLI = 10_000,
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
190 MAX_WAIT_MILLIS = uint.max - 1
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
191 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
192
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
193 period /= TICKS_PER_MILLI;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
194 if( period > MAX_WAIT_MILLIS )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
195 period = MAX_WAIT_MILLIS;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
196 switch( WaitForSingleObject( m_hndl, cast(uint) period ) )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
197 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
198 case WAIT_OBJECT_0:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
199 return true;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
200 case WAIT_TIMEOUT:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
201 return false;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
202 default:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
203 throw new SyncException( "Unable to wait for semaphore" );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
204 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
205 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
206 else version( OSX )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
207 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
208 mach_timespec_t t = void;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
209 (cast(byte*) &t)[0 .. t.sizeof] = 0;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
210
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
211 if( period != 0 )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
212 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
213 enum : uint
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
214 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
215 NANOS_PER_TICK = 100,
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
216 TICKS_PER_SECOND = 10_000_000,
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
217 NANOS_PER_SECOND = NANOS_PER_TICK * TICKS_PER_SECOND,
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
218 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
219
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
220 if( t.tv_sec.max - t.tv_sec < period / TICKS_PER_SECOND )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
221 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
222 t.tv_sec = t.tv_sec.max;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
223 t.tv_nsec = 0;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
224 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
225 else
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
226 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
227 t.tv_sec += cast(typeof(t.tv_sec)) (period / TICKS_PER_SECOND);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
228 long ns = (period % TICKS_PER_SECOND) * NANOS_PER_TICK;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
229 if( NANOS_PER_SECOND - t.tv_nsec > ns )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
230 t.tv_nsec = cast(typeof(t.tv_nsec)) ns;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
231 else
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
232 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
233 t.tv_sec += 1;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
234 t.tv_nsec += ns - NANOS_PER_SECOND;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
235 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
236 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
237 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
238 while( true )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
239 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
240 auto rc = semaphore_timedwait( m_hndl, t );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
241 if( !rc )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
242 return true;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
243 if( rc == KERN_OPERATION_TIMED_OUT )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
244 return false;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
245 if( rc != KERN_ABORTED || errno != EINTR )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
246 throw new SyncException( "Unable to wait for semaphore" );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
247 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
248 // -w trip
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
249 return false;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
250 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
251 else version( Posix )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
252 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
253 timespec t = void;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
254 mktspec( t, period );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
255
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
256 while( true )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
257 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
258 if( !sem_timedwait( &m_hndl, &t ) )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
259 return true;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
260 if( errno == ETIMEDOUT )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
261 return false;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
262 if( errno != EINTR )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
263 throw new SyncException( "Unable to wait for semaphore" );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
264 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
265 // -w trip
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
266 return false;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
267 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
268 }
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Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
269
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
270
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
271 /**
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
272 * Atomically increment the current count by one. This will notify one
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
273 * waiter, if there are any in the queue.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
274 *
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
275 * Throws:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
276 * SyncException on error.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
277 */
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
278 void notify()
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
279 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
280 version( Win32 )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
281 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
282 if( !ReleaseSemaphore( m_hndl, 1, null ) )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
283 throw new SyncException( "Unable to notify semaphore" );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
284 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
285 else version( OSX )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
286 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
287 auto rc = semaphore_signal( m_hndl );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
288 if( rc )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
289 throw new SyncException( "Unable to notify semaphore" );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
290 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
291 else version( Posix )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
292 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
293 int rc = sem_post( &m_hndl );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
294 if( rc )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
295 throw new SyncException( "Unable to notify semaphore" );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
296 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
297 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
298
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Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
299
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Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
300 /**
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
301 * If the current count is equal to zero, return. Otherwise, atomically
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
302 * decrement the count by one and return true.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
303 *
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
304 * Throws:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
305 * SyncException on error.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
306 *
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
307 * Returns:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
308 * true if the count was above zero and false if not.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
309 */
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
310 bool tryWait()
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
311 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
312 version( Win32 )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
313 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
314 switch( WaitForSingleObject( m_hndl, 0 ) )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
315 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
316 case WAIT_OBJECT_0:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
317 return true;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
318 case WAIT_TIMEOUT:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
319 return false;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
320 default:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
321 throw new SyncException( "Unable to wait for semaphore" );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
322 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
323 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
324 else version( OSX )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
325 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
326 return wait( 0 );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
327 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
328 else version( Posix )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
329 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
330 while( true )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
331 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
332 if( !sem_trywait( &m_hndl ) )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
333 return true;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
334 if( errno == EAGAIN )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
335 return false;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
336 if( errno != EINTR )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
337 throw new SyncException( "Unable to wait for semaphore" );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
338 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
339 // -w trip
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
340 return false;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
341 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
342 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
343
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
344
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
345 private:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
346 version( Win32 )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
347 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
348 HANDLE m_hndl;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
349 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
350 else version( OSX )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
351 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
352 semaphore_t m_hndl;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
353 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
354 else version( Posix )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
355 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
356 sem_t m_hndl;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
357 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
358 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
359
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
360
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
361 ////////////////////////////////////////////////////////////////////////////////
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
362 // Unit Tests
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
363 ////////////////////////////////////////////////////////////////////////////////
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
364
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
365
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
366 version( unittest )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
367 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
368 private import core.thread;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
369
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
370
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
371 void testWait()
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
372 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
373 auto semaphore = new Semaphore;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
374 int numToProduce = 10;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
375 bool allProduced = false;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
376 auto synProduced = new Object;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
377 int numConsumed = 0;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
378 auto synConsumed = new Object;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
379 int numConsumers = 10;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
380 int numComplete = 0;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
381 auto synComplete = new Object;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
382
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
383 void consumer()
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
384 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
385 while( true )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
386 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
387 semaphore.wait();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
388
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
389 synchronized( synProduced )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
390 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
391 if( allProduced )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
392 break;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
393 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
394
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
395 synchronized( synConsumed )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
396 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
397 ++numConsumed;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
398 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
399 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
400
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
401 synchronized( synComplete )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
402 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
403 ++numComplete;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
404 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
405 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
406
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
407 void producer()
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
408 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
409 assert( !semaphore.tryWait() );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
410
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
411 for( int i = 0; i < numToProduce; ++i )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
412 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
413 semaphore.notify();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
414 Thread.yield();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
415 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
416 Thread.sleep( 10_000_000 ); // 1s
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
417 synchronized( synProduced )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
418 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
419 allProduced = true;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
420 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
421
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
422 for( int i = 0; i < numConsumers; ++i )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
423 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
424 semaphore.notify();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
425 Thread.yield();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
426 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
427
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
428 for( int i = numConsumers * 10000; i > 0; --i )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
429 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
430 synchronized( synComplete )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
431 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
432 if( numComplete == numConsumers )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
433 break;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
434 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
435 Thread.yield();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
436 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
437
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
438 synchronized( synComplete )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
439 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
440 assert( numComplete == numConsumers );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
441 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
442
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
443 synchronized( synConsumed )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
444 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
445 assert( numConsumed == numToProduce );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
446 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
447
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
448 assert( !semaphore.tryWait() );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
449 semaphore.notify();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
450 assert( semaphore.tryWait() );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
451 assert( !semaphore.tryWait() );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
452 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
453
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
454 auto group = new ThreadGroup;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
455
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
456 for( int i = 0; i < numConsumers; ++i )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
457 group.create( &consumer );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
458 group.create( &producer );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
459 group.joinAll();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
460 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
461
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
462
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
463 void testWaitTimeout()
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
464 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
465 auto synReady = new Object;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
466 auto semReady = new Semaphore;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
467 bool waiting = false;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
468 bool alertedOne = true;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
469 bool alertedTwo = true;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
470
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
471 void waiter()
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
472 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
473 synchronized( synReady )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
474 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
475 waiting = true;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
476 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
477 alertedOne = semReady.wait( 10_000_000 ); // 100ms
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
478 alertedTwo = semReady.wait( 10_000_000 ); // 100ms
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
479 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
480
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
481 auto thread = new Thread( &waiter );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
482 thread.start();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
483
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
484 while( true )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
485 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
486 synchronized( synReady )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
487 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
488 if( waiting )
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
489 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
490 semReady.notify();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
491 break;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
492 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
493 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
494 Thread.yield();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
495 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
496 thread.join();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
497 assert( waiting && alertedOne && !alertedTwo );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
498 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
499
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
500
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
501 unittest
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
502 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
503 testWait();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
504 testWaitTimeout();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
505 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
506 }