1 | #if defined(USE_THREADS) || defined(USE_ITHREADS) |
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2 | |
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3 | #ifdef WIN32 |
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4 | # include <win32thread.h> |
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5 | #else |
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6 | # ifdef OLD_PTHREADS_API /* Here be dragons. */ |
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7 | # define DETACH(t) \ |
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8 | STMT_START { \ |
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9 | if (pthread_detach(&(t)->self)) { \ |
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10 | MUTEX_UNLOCK(&(t)->mutex); \ |
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11 | Perl_croak_nocontext("panic: DETACH"); \ |
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12 | } \ |
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13 | } STMT_END |
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14 | |
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15 | # define PERL_GET_CONTEXT Perl_get_context() |
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16 | # define PERL_SET_CONTEXT(t) Perl_set_context((void*)t) |
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17 | |
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18 | # define PTHREAD_GETSPECIFIC_INT |
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19 | # ifdef DJGPP |
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20 | # define pthread_addr_t any_t |
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21 | # define NEED_PTHREAD_INIT |
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22 | # define PTHREAD_CREATE_JOINABLE (1) |
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23 | # endif |
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24 | # ifdef __OPEN_VM |
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25 | # define pthread_addr_t void * |
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26 | # endif |
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27 | # ifdef VMS |
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28 | # define pthread_attr_init(a) pthread_attr_create(a) |
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29 | # define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_setdetach_np(a,s) |
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30 | # define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d) |
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31 | # define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d)) |
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32 | # define pthread_mutexattr_init(a) pthread_mutexattr_create(a) |
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33 | # define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t) |
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34 | # endif |
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35 | # if defined(DJGPP) || defined(__OPEN_VM) |
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36 | # define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,&(s)) |
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37 | # define YIELD pthread_yield(NULL) |
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38 | # endif |
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39 | # endif |
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40 | # define pthread_mutexattr_default NULL |
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41 | # define pthread_condattr_default NULL |
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42 | #endif |
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43 | |
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44 | #ifndef PTHREAD_CREATE |
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45 | /* You are not supposed to pass NULL as the 2nd arg of PTHREAD_CREATE(). */ |
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46 | # define PTHREAD_CREATE(t,a,s,d) pthread_create(t,&(a),s,d) |
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47 | #endif |
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48 | |
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49 | #ifndef PTHREAD_ATTR_SETDETACHSTATE |
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50 | # define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,s) |
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51 | #endif |
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52 | |
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53 | #ifndef PTHREAD_CREATE_JOINABLE |
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54 | # ifdef OLD_PTHREAD_CREATE_JOINABLE |
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55 | # define PTHREAD_CREATE_JOINABLE OLD_PTHREAD_CREATE_JOINABLE |
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56 | # else |
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57 | # define PTHREAD_CREATE_JOINABLE 0 /* Panic? No, guess. */ |
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58 | # endif |
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59 | #endif |
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60 | |
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61 | #ifdef I_MACH_CTHREADS |
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62 | |
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63 | /* cthreads interface */ |
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64 | |
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65 | /* #include <mach/cthreads.h> is in perl.h #ifdef I_MACH_CTHREADS */ |
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66 | |
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67 | #define MUTEX_INIT(m) \ |
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68 | STMT_START { \ |
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69 | *m = mutex_alloc(); \ |
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70 | if (*m) { \ |
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71 | mutex_init(*m); \ |
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72 | } else { \ |
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73 | Perl_croak_nocontext("panic: MUTEX_INIT"); \ |
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74 | } \ |
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75 | } STMT_END |
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76 | |
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77 | #define MUTEX_LOCK(m) mutex_lock(*m) |
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78 | #define MUTEX_UNLOCK(m) mutex_unlock(*m) |
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79 | #define MUTEX_DESTROY(m) \ |
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80 | STMT_START { \ |
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81 | mutex_free(*m); \ |
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82 | *m = 0; \ |
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83 | } STMT_END |
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84 | |
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85 | #define COND_INIT(c) \ |
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86 | STMT_START { \ |
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87 | *c = condition_alloc(); \ |
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88 | if (*c) { \ |
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89 | condition_init(*c); \ |
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90 | } \ |
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91 | else { \ |
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92 | Perl_croak_nocontext("panic: COND_INIT"); \ |
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93 | } \ |
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94 | } STMT_END |
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95 | |
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96 | #define COND_SIGNAL(c) condition_signal(*c) |
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97 | #define COND_BROADCAST(c) condition_broadcast(*c) |
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98 | #define COND_WAIT(c, m) condition_wait(*c, *m) |
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99 | #define COND_DESTROY(c) \ |
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100 | STMT_START { \ |
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101 | condition_free(*c); \ |
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102 | *c = 0; \ |
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103 | } STMT_END |
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104 | |
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105 | #define THREAD_CREATE(thr, f) (thr->self = cthread_fork(f, thr), 0) |
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106 | #define THREAD_POST_CREATE(thr) |
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107 | |
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108 | #define THREAD_RET_TYPE any_t |
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109 | #define THREAD_RET_CAST(x) ((any_t) x) |
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110 | |
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111 | #define DETACH(t) cthread_detach(t->self) |
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112 | #define JOIN(t, avp) (*(avp) = (AV *)cthread_join(t->self)) |
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113 | |
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114 | #define PERL_SET_CONTEXT(t) cthread_set_data(cthread_self(), t) |
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115 | #define PERL_GET_CONTEXT cthread_data(cthread_self()) |
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116 | |
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117 | #define INIT_THREADS cthread_init() |
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118 | #define YIELD cthread_yield() |
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119 | #define ALLOC_THREAD_KEY NOOP |
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120 | #define SET_THREAD_SELF(thr) (thr->self = cthread_self()) |
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121 | |
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122 | #endif /* I_MACH_CTHREADS */ |
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123 | |
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124 | #ifndef YIELD |
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125 | # ifdef SCHED_YIELD |
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126 | # define YIELD SCHED_YIELD |
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127 | # else |
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128 | # ifdef HAS_SCHED_YIELD |
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129 | # define YIELD sched_yield() |
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130 | # else |
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131 | # ifdef HAS_PTHREAD_YIELD |
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132 | /* pthread_yield(NULL) platforms are expected |
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133 | * to have #defined YIELD for themselves. */ |
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134 | # define YIELD pthread_yield() |
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135 | # endif |
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136 | # endif |
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137 | # endif |
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138 | #endif |
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139 | |
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140 | #ifdef __hpux |
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141 | # define MUTEX_INIT_NEEDS_MUTEX_ZEROED |
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142 | #endif |
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143 | |
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144 | #ifndef MUTEX_INIT |
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145 | |
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146 | # ifdef MUTEX_INIT_NEEDS_MUTEX_ZEROED |
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147 | /* Temporary workaround, true bug is deeper. --jhi 1999-02-25 */ |
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148 | # define MUTEX_INIT(m) \ |
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149 | STMT_START { \ |
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150 | Zero((m), 1, perl_mutex); \ |
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151 | if (pthread_mutex_init((m), pthread_mutexattr_default)) \ |
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152 | Perl_croak_nocontext("panic: MUTEX_INIT"); \ |
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153 | } STMT_END |
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154 | # else |
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155 | # define MUTEX_INIT(m) \ |
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156 | STMT_START { \ |
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157 | if (pthread_mutex_init((m), pthread_mutexattr_default)) \ |
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158 | Perl_croak_nocontext("panic: MUTEX_INIT"); \ |
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159 | } STMT_END |
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160 | # endif |
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161 | |
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162 | # define MUTEX_LOCK(m) \ |
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163 | STMT_START { \ |
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164 | if (pthread_mutex_lock((m))) \ |
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165 | Perl_croak_nocontext("panic: MUTEX_LOCK"); \ |
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166 | } STMT_END |
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167 | |
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168 | # define MUTEX_UNLOCK(m) \ |
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169 | STMT_START { \ |
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170 | if (pthread_mutex_unlock((m))) \ |
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171 | Perl_croak_nocontext("panic: MUTEX_UNLOCK"); \ |
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172 | } STMT_END |
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173 | |
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174 | # define MUTEX_DESTROY(m) \ |
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175 | STMT_START { \ |
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176 | if (pthread_mutex_destroy((m))) \ |
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177 | Perl_croak_nocontext("panic: MUTEX_DESTROY"); \ |
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178 | } STMT_END |
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179 | #endif /* MUTEX_INIT */ |
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180 | |
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181 | #ifndef COND_INIT |
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182 | # define COND_INIT(c) \ |
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183 | STMT_START { \ |
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184 | if (pthread_cond_init((c), pthread_condattr_default)) \ |
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185 | Perl_croak_nocontext("panic: COND_INIT"); \ |
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186 | } STMT_END |
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187 | |
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188 | # define COND_SIGNAL(c) \ |
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189 | STMT_START { \ |
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190 | if (pthread_cond_signal((c))) \ |
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191 | Perl_croak_nocontext("panic: COND_SIGNAL"); \ |
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192 | } STMT_END |
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193 | |
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194 | # define COND_BROADCAST(c) \ |
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195 | STMT_START { \ |
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196 | if (pthread_cond_broadcast((c))) \ |
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197 | Perl_croak_nocontext("panic: COND_BROADCAST"); \ |
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198 | } STMT_END |
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199 | |
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200 | # define COND_WAIT(c, m) \ |
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201 | STMT_START { \ |
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202 | if (pthread_cond_wait((c), (m))) \ |
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203 | Perl_croak_nocontext("panic: COND_WAIT"); \ |
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204 | } STMT_END |
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205 | |
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206 | # define COND_DESTROY(c) \ |
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207 | STMT_START { \ |
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208 | if (pthread_cond_destroy((c))) \ |
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209 | Perl_croak_nocontext("panic: COND_DESTROY"); \ |
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210 | } STMT_END |
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211 | #endif /* COND_INIT */ |
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212 | |
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213 | /* DETACH(t) must only be called while holding t->mutex */ |
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214 | #ifndef DETACH |
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215 | # define DETACH(t) \ |
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216 | STMT_START { \ |
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217 | if (pthread_detach((t)->self)) { \ |
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218 | MUTEX_UNLOCK(&(t)->mutex); \ |
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219 | Perl_croak_nocontext("panic: DETACH"); \ |
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220 | } \ |
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221 | } STMT_END |
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222 | #endif /* DETACH */ |
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223 | |
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224 | #ifndef JOIN |
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225 | # define JOIN(t, avp) \ |
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226 | STMT_START { \ |
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227 | if (pthread_join((t)->self, (void**)(avp))) \ |
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228 | Perl_croak_nocontext("panic: pthread_join"); \ |
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229 | } STMT_END |
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230 | #endif /* JOIN */ |
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231 | |
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232 | #ifndef PERL_GET_CONTEXT |
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233 | # define PERL_GET_CONTEXT pthread_getspecific(PL_thr_key) |
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234 | #endif |
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235 | |
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236 | #ifndef PERL_SET_CONTEXT |
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237 | # define PERL_SET_CONTEXT(t) \ |
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238 | STMT_START { \ |
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239 | if (pthread_setspecific(PL_thr_key, (void *)(t))) \ |
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240 | Perl_croak_nocontext("panic: pthread_setspecific"); \ |
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241 | } STMT_END |
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242 | #endif /* PERL_SET_CONTEXT */ |
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243 | |
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244 | #ifndef INIT_THREADS |
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245 | # ifdef NEED_PTHREAD_INIT |
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246 | # define INIT_THREADS pthread_init() |
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247 | # endif |
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248 | #endif |
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249 | |
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250 | #ifndef ALLOC_THREAD_KEY |
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251 | # define ALLOC_THREAD_KEY \ |
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252 | STMT_START { \ |
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253 | if (pthread_key_create(&PL_thr_key, 0)) { \ |
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254 | fprintf(stderr, "panic: pthread_key_create"); \ |
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255 | exit(1); \ |
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256 | } \ |
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257 | } STMT_END |
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258 | #endif |
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259 | |
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260 | #ifndef THREAD_RET_TYPE |
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261 | # define THREAD_RET_TYPE void * |
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262 | # define THREAD_RET_CAST(p) ((void *)(p)) |
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263 | #endif /* THREAD_RET */ |
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264 | |
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265 | #if defined(USE_THREADS) |
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266 | |
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267 | /* Accessor for per-thread SVs */ |
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268 | # define THREADSV(i) (thr->threadsvp[i]) |
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269 | |
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270 | /* |
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271 | * LOCK_SV_MUTEX and UNLOCK_SV_MUTEX are performance-critical. Here, we |
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272 | * try only locking them if there may be more than one thread in existence. |
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273 | * Systems with very fast mutexes (and/or slow conditionals) may wish to |
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274 | * remove the "if (threadnum) ..." test. |
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275 | * XXX do NOT use C<if (PL_threadnum) ...> -- it sets up race conditions! |
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276 | */ |
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277 | # define LOCK_SV_MUTEX MUTEX_LOCK(&PL_sv_mutex) |
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278 | # define UNLOCK_SV_MUTEX MUTEX_UNLOCK(&PL_sv_mutex) |
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279 | # define LOCK_STRTAB_MUTEX MUTEX_LOCK(&PL_strtab_mutex) |
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280 | # define UNLOCK_STRTAB_MUTEX MUTEX_UNLOCK(&PL_strtab_mutex) |
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281 | # define LOCK_CRED_MUTEX MUTEX_LOCK(&PL_cred_mutex) |
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282 | # define UNLOCK_CRED_MUTEX MUTEX_UNLOCK(&PL_cred_mutex) |
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283 | |
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284 | |
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285 | /* Values and macros for thr->flags */ |
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286 | #define THRf_STATE_MASK 7 |
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287 | #define THRf_R_JOINABLE 0 |
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288 | #define THRf_R_JOINED 1 |
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289 | #define THRf_R_DETACHED 2 |
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290 | #define THRf_ZOMBIE 3 |
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291 | #define THRf_DEAD 4 |
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292 | |
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293 | #define THRf_DID_DIE 8 |
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294 | |
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295 | /* ThrSTATE(t) and ThrSETSTATE(t) must only be called while holding t->mutex */ |
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296 | #define ThrSTATE(t) ((t)->flags & THRf_STATE_MASK) |
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297 | #define ThrSETSTATE(t, s) STMT_START { \ |
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298 | (t)->flags &= ~THRf_STATE_MASK; \ |
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299 | (t)->flags |= (s); \ |
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300 | DEBUG_S(PerlIO_printf(Perl_debug_log, \ |
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301 | "thread %p set to state %d\n", (t), (s))); \ |
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302 | } STMT_END |
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303 | |
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304 | typedef struct condpair { |
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305 | perl_mutex mutex; /* Protects all other fields */ |
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306 | perl_cond owner_cond; /* For when owner changes at all */ |
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307 | perl_cond cond; /* For cond_signal and cond_broadcast */ |
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308 | Thread owner; /* Currently owning thread */ |
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309 | } condpair_t; |
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310 | |
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311 | #define MgMUTEXP(mg) (&((condpair_t *)(mg->mg_ptr))->mutex) |
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312 | #define MgOWNERCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->owner_cond) |
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313 | #define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond) |
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314 | #define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner |
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315 | |
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316 | #endif /* USE_THREADS */ |
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317 | #endif /* USE_THREADS || USE_ITHREADS */ |
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318 | |
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319 | #ifndef MUTEX_LOCK |
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320 | # define MUTEX_LOCK(m) |
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321 | #endif |
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322 | |
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323 | #ifndef MUTEX_UNLOCK |
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324 | # define MUTEX_UNLOCK(m) |
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325 | #endif |
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326 | |
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327 | #ifndef MUTEX_INIT |
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328 | # define MUTEX_INIT(m) |
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329 | #endif |
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330 | |
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331 | #ifndef MUTEX_DESTROY |
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332 | # define MUTEX_DESTROY(m) |
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333 | #endif |
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334 | |
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335 | #ifndef COND_INIT |
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336 | # define COND_INIT(c) |
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337 | #endif |
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338 | |
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339 | #ifndef COND_SIGNAL |
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340 | # define COND_SIGNAL(c) |
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341 | #endif |
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342 | |
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343 | #ifndef COND_BROADCAST |
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344 | # define COND_BROADCAST(c) |
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345 | #endif |
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346 | |
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347 | #ifndef COND_WAIT |
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348 | # define COND_WAIT(c, m) |
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349 | #endif |
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350 | |
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351 | #ifndef COND_DESTROY |
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352 | # define COND_DESTROY(c) |
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353 | #endif |
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354 | |
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355 | #ifndef LOCK_SV_MUTEX |
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356 | # define LOCK_SV_MUTEX |
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357 | #endif |
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358 | |
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359 | #ifndef UNLOCK_SV_MUTEX |
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360 | # define UNLOCK_SV_MUTEX |
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361 | #endif |
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362 | |
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363 | #ifndef LOCK_STRTAB_MUTEX |
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364 | # define LOCK_STRTAB_MUTEX |
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365 | #endif |
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366 | |
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367 | #ifndef UNLOCK_STRTAB_MUTEX |
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368 | # define UNLOCK_STRTAB_MUTEX |
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369 | #endif |
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370 | |
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371 | #ifndef LOCK_CRED_MUTEX |
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372 | # define LOCK_CRED_MUTEX |
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373 | #endif |
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374 | |
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375 | #ifndef UNLOCK_CRED_MUTEX |
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376 | # define UNLOCK_CRED_MUTEX |
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377 | #endif |
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378 | |
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379 | /* THR, SET_THR, and dTHR are there for compatibility with old versions */ |
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380 | #ifndef THR |
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381 | # define THR PERL_GET_THX |
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382 | #endif |
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383 | |
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384 | #ifndef SET_THR |
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385 | # define SET_THR(t) PERL_SET_THX(t) |
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386 | #endif |
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387 | |
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388 | #ifndef dTHR |
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389 | # define dTHR dNOOP |
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390 | #endif |
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391 | |
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392 | #ifndef INIT_THREADS |
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393 | # define INIT_THREADS NOOP |
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394 | #endif |
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