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1 // Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Name : pthread_exit.cpp |
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15 // Part of : PThread library |
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16 // pthread_exit call is implemented. |
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17 // Version: |
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18 // |
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19 |
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20 |
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21 |
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22 #include <pthread.h> |
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23 #include <stdio.h> |
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24 #include <stdlib.h> |
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25 #include <errno.h> |
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26 #include <e32base.h> |
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27 #include "threadglobals.h" |
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28 #include "pthreadmisc.h" |
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29 |
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30 #define THREAD_COUNT_ONE 1 |
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31 |
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32 |
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33 EXPORT_C void pthread_exit(void *retValPtr) |
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34 { |
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35 _global_data_t *glbPtr; |
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36 _pthread_node_t *tempPtr; |
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37 _pthread_node_t *selfNodePtr; |
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38 |
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39 THR_PRINTF("[pthread] Begin pthread_exit\n"); |
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40 |
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41 //Get the TLS value (self node pointer) |
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42 selfNodePtr = (_pthread_node_t*) _pthread_getTls(); |
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43 //coverity[var_compare_op] |
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44 if (NULL == selfNodePtr) // This should never happen |
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45 { |
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46 THR_PRINTF("[pthread] FATAL :TLS is not initialized \n"); |
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47 THR_PRINTF("[pthread] Terminating the process\n"); |
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48 RProcess rp; |
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49 rp.Kill(0); // Terminate the process |
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50 } |
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51 |
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52 //coverity[var_deref_op] |
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53 if (_MAIN_THREAD == selfNodePtr->mainFlag) |
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54 { |
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55 // Make the main thread non critical, so that the process does not |
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56 // terminate, after main exits with pthread_exit() |
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57 User::SetCritical(User::ENotCritical); |
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58 } |
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59 |
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60 glbPtr = selfNodePtr->glbDataPtr; // point to global struct |
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61 |
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62 // Call destructors for TLS keys |
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63 _pthread_destroyKeys(glbPtr,selfNodePtr); |
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64 |
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65 glbPtr->lockThreadTable.Wait(); // Acquire the thread table lock |
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66 |
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67 // Traverse through the list, till destination node is reached |
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68 for (tempPtr = glbPtr->start; |
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69 ((tempPtr != selfNodePtr) && (tempPtr != NULL)); |
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70 tempPtr = tempPtr->next) |
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71 { |
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72 ; // Empty loop |
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73 } |
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74 |
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75 if (NULL == tempPtr) // Not found; |
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76 { |
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77 THR_PRINTF("[pthread] FATAL :thread node not found \n"); |
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78 THR_PRINTF("[pthread] Terminating the process\n"); |
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79 RProcess rp; |
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80 rp.Kill(0); // Terminate the process |
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81 } |
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82 |
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83 selfNodePtr->lockNode.Wait(); // Acquire the node lock |
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84 |
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85 selfNodePtr->returnValue = retValPtr; // Store the return val |
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86 |
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87 //added to solve memoryleak |
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88 CTrapCleanup* pCleanup = (CTrapCleanup*)selfNodePtr->cleanStackPtr; |
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89 selfNodePtr->cleanStackPtr = NULL; |
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90 |
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91 // Check the thread count and if it becoming zero then terminate process |
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92 --(glbPtr->threadCount); // Update the thread count |
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93 if (THREAD_COUNT_ZERO == glbPtr->threadCount) |
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94 { |
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95 THR_PRINTF("[pthread] Terminating the process\n"); |
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96 // Terminate the process by calling exit(0) |
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97 exit(0); |
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98 /* |
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99 RProcess rp; |
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100 rp.Kill(0);*/ |
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101 |
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102 // Free the cleanup stack |
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103 delete pCleanup; |
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104 } |
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105 |
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106 if (PTHREAD_CREATE_DETACHED == selfNodePtr->detachState) |
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107 { |
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108 // Delete the Node; |
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109 _pthread_deleteNode(selfNodePtr, glbPtr, NULL); |
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110 // It also unlocks the node aswell unlocks the thread table lock |
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111 } |
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112 else |
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113 { |
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114 selfNodePtr->threadState = _THREAD_ZOMBIE; |
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115 selfNodePtr->lockNode.Signal(); // Unlock the node |
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116 |
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117 glbPtr->lockThreadTable.Signal(); // release thread table lock |
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118 } |
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119 |
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120 // Free the cleanup stack |
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121 delete pCleanup; |
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122 |
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123 //Terminate the current thread |
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124 THR_PRINTF("[pthread] Terminating the current thread\n"); |
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125 /* |
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126 |
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127 "RThread.Kill cannot be used to terminate the thread in question because the thread uses a shared heap and |
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128 RThread.Kill will cause the internal array used for thread-local storage(TLS) to be leaked only on specific ARM platforms |
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129 which implement the CP15 feature." |
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130 */ |
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131 User::Exit(0); |
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132 |
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133 |
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134 } |
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135 |
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136 // End of file |