… | |
… | |
4 | #include "perl.h" |
4 | #include "perl.h" |
5 | #include "XSUB.h" |
5 | #include "XSUB.h" |
6 | |
6 | |
7 | #include "patchlevel.h" |
7 | #include "patchlevel.h" |
8 | |
8 | |
9 | #if USE_VALGRIND |
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10 | # include <valgrind/valgrind.h> |
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11 | #endif |
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12 | |
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13 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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14 | (PERL_REVISION > (a) \ |
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15 | || (PERL_REVISION == (a) \ |
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16 | && (PERL_VERSION > (b) \ |
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17 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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18 | |
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19 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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20 | # ifndef PL_ppaddr |
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21 | # define PL_ppaddr ppaddr |
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22 | # endif |
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23 | # ifndef call_sv |
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24 | # define call_sv perl_call_sv |
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25 | # endif |
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26 | # ifndef get_sv |
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27 | # define get_sv perl_get_sv |
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28 | # endif |
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29 | # ifndef get_cv |
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30 | # define get_cv perl_get_cv |
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31 | # endif |
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32 | # ifndef IS_PADGV |
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33 | # define IS_PADGV(v) 0 |
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34 | # endif |
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35 | # ifndef IS_PADCONST |
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36 | # define IS_PADCONST(v) 0 |
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37 | # endif |
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38 | #endif |
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39 | |
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40 | #include <stdio.h> |
9 | #include <stdio.h> |
41 | #include <errno.h> |
10 | #include <errno.h> |
42 | |
11 | #include <assert.h> |
43 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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44 | # undef STACKGUARD |
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45 | #endif |
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46 | |
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47 | #ifndef STACKGUARD |
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48 | # define STACKGUARD 0 |
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49 | #endif |
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50 | |
12 | |
51 | #ifdef HAVE_MMAP |
13 | #ifdef HAVE_MMAP |
52 | # include <unistd.h> |
14 | # include <unistd.h> |
53 | # include <sys/mman.h> |
15 | # include <sys/mman.h> |
54 | # ifndef MAP_ANONYMOUS |
16 | # ifndef MAP_ANONYMOUS |
… | |
… | |
69 | #else |
31 | #else |
70 | # define PAGESIZE 0 |
32 | # define PAGESIZE 0 |
71 | # define BOOT_PAGESIZE (void)0 |
33 | # define BOOT_PAGESIZE (void)0 |
72 | #endif |
34 | #endif |
73 | |
35 | |
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36 | #if CORO_USE_VALGRIND |
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37 | # include <valgrind/valgrind.h> |
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38 | # define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end)) |
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39 | #else |
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40 | # define REGISTER_STACK(cctx,start,end) |
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41 | #endif |
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42 | |
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43 | /* the maximum number of idle cctx that will be pooled */ |
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44 | #define MAX_IDLE_CCTX 8 |
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45 | |
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46 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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47 | (PERL_REVISION > (a) \ |
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48 | || (PERL_REVISION == (a) \ |
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49 | && (PERL_VERSION > (b) \ |
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50 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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51 | |
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52 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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53 | # ifndef PL_ppaddr |
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54 | # define PL_ppaddr ppaddr |
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55 | # endif |
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56 | # ifndef call_sv |
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57 | # define call_sv perl_call_sv |
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58 | # endif |
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59 | # ifndef get_sv |
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60 | # define get_sv perl_get_sv |
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61 | # endif |
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62 | # ifndef get_cv |
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63 | # define get_cv perl_get_cv |
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64 | # endif |
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65 | # ifndef IS_PADGV |
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66 | # define IS_PADGV(v) 0 |
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67 | # endif |
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68 | # ifndef IS_PADCONST |
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69 | # define IS_PADCONST(v) 0 |
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70 | # endif |
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71 | #endif |
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72 | |
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73 | /* 5.8.7 */ |
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74 | #ifndef SvRV_set |
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75 | # define SvRV_set(s,v) SvRV(s) = (v) |
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76 | #endif |
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77 | |
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78 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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79 | # undef CORO_STACKGUARD |
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80 | #endif |
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81 | |
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82 | #ifndef CORO_STACKGUARD |
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83 | # define CORO_STACKGUARD 0 |
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84 | #endif |
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85 | |
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86 | /* prefer perl internal functions over our own? */ |
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87 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
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88 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
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89 | #endif |
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90 | |
74 | /* The next macro should declare a variable stacklevel that contains and approximation |
91 | /* The next macro should declare a variable stacklevel that contains and approximation |
75 | * to the current C stack pointer. Its property is that it changes with each call |
92 | * to the current C stack pointer. Its property is that it changes with each call |
76 | * and should be unique. */ |
93 | * and should be unique. */ |
77 | #define dSTACKLEVEL int stacklevel |
94 | #define dSTACKLEVEL int stacklevel |
78 | #define STACKLEVEL ((void *)&stacklevel) |
95 | #define STACKLEVEL ((void *)&stacklevel) |
79 | |
96 | |
80 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
97 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
81 | |
98 | |
82 | #if __GNUC__ >= 3 |
99 | #if __GNUC__ >= 3 |
83 | # define attribute(x) __attribute__(x) |
100 | # define attribute(x) __attribute__(x) |
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101 | # define BARRIER __asm__ __volatile__ ("" : : : "memory") |
84 | #else |
102 | #else |
85 | # define attribute(x) |
103 | # define attribute(x) |
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104 | # define BARRIER |
86 | #endif |
105 | #endif |
87 | |
106 | |
88 | #define NOINLINE attribute ((noinline)) |
107 | #define NOINLINE attribute ((noinline)) |
89 | |
108 | |
90 | #include "CoroAPI.h" |
109 | #include "CoroAPI.h" |
91 | |
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92 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
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93 | |
110 | |
94 | #ifdef USE_ITHREADS |
111 | #ifdef USE_ITHREADS |
95 | static perl_mutex coro_mutex; |
112 | static perl_mutex coro_mutex; |
96 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
113 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
97 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
114 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
98 | #else |
115 | #else |
99 | # define LOCK (void)0 |
116 | # define LOCK (void)0 |
100 | # define UNLOCK (void)0 |
117 | # define UNLOCK (void)0 |
101 | #endif |
118 | #endif |
102 | |
119 | |
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120 | /* helper storage struct for Coro::AIO */ |
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121 | struct io_state |
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122 | { |
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123 | int errorno; |
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124 | I32 laststype; |
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125 | int laststatval; |
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126 | Stat_t statcache; |
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127 | }; |
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128 | |
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129 | static size_t coro_stacksize = CORO_STACKSIZE; |
103 | static struct CoroAPI coroapi; |
130 | static struct CoroAPI coroapi; |
104 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
131 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
105 | static HV *coro_state_stash, *coro_stash; |
132 | static HV *coro_state_stash, *coro_stash; |
106 | static SV *coro_mortal; /* will be freed after next transfer */ |
133 | static SV *coro_mortal; /* will be freed after next transfer */ |
107 | |
134 | |
… | |
… | |
112 | typedef struct coro_cctx { |
139 | typedef struct coro_cctx { |
113 | struct coro_cctx *next; |
140 | struct coro_cctx *next; |
114 | |
141 | |
115 | /* the stack */ |
142 | /* the stack */ |
116 | void *sptr; |
143 | void *sptr; |
117 | long ssize; /* positive == mmap, otherwise malloc */ |
144 | size_t ssize; |
118 | |
145 | |
119 | /* cpu state */ |
146 | /* cpu state */ |
120 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
147 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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148 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
121 | JMPENV *top_env; |
149 | JMPENV *top_env; |
122 | coro_context cctx; |
150 | coro_context cctx; |
123 | |
151 | |
124 | #if USE_VALGRIND |
152 | #if CORO_USE_VALGRIND |
125 | int valgrind_id; |
153 | int valgrind_id; |
126 | #endif |
154 | #endif |
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155 | char inuse, mapped; |
127 | } coro_cctx; |
156 | } coro_cctx; |
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157 | |
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158 | enum { |
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159 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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160 | CF_READY = 0x0002, /* coroutine is ready */ |
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161 | CF_NEW = 0x0004, /* has never been switched to */ |
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162 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
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163 | }; |
128 | |
164 | |
129 | /* this is a structure representing a perl-level coroutine */ |
165 | /* this is a structure representing a perl-level coroutine */ |
130 | struct coro { |
166 | struct coro { |
131 | /* the c coroutine allocated to this perl coroutine, if any */ |
167 | /* the c coroutine allocated to this perl coroutine, if any */ |
132 | coro_cctx *cctx; |
168 | coro_cctx *cctx; |
133 | |
169 | |
134 | /* data associated with this coroutine (initial args) */ |
170 | /* data associated with this coroutine (initial args) */ |
135 | AV *args; |
171 | AV *args; |
136 | int refcnt; |
172 | int refcnt; |
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173 | int save; /* CORO_SAVE flags */ |
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174 | int flags; /* CF_ flags */ |
137 | |
175 | |
138 | /* optionally saved, might be zero */ |
176 | /* optionally saved, might be zero */ |
139 | AV *defav; |
177 | AV *defav; /* @_ */ |
140 | SV *defsv; |
178 | SV *defsv; /* $_ */ |
141 | SV *errsv; |
179 | SV *errsv; /* $@ */ |
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180 | SV *irssv; /* $/ */ |
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181 | SV *irssv_sv; /* real $/ cache */ |
142 | |
182 | |
143 | #define VAR(name,type) type name; |
183 | #define VAR(name,type) type name; |
144 | # include "state.h" |
184 | # include "state.h" |
145 | #undef VAR |
185 | #undef VAR |
146 | |
186 | |
… | |
… | |
148 | int prio; |
188 | int prio; |
149 | }; |
189 | }; |
150 | |
190 | |
151 | typedef struct coro *Coro__State; |
191 | typedef struct coro *Coro__State; |
152 | typedef struct coro *Coro__State_or_hashref; |
192 | typedef struct coro *Coro__State_or_hashref; |
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193 | |
|
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194 | /** Coro ********************************************************************/ |
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195 | |
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196 | #define PRIO_MAX 3 |
|
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197 | #define PRIO_HIGH 1 |
|
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198 | #define PRIO_NORMAL 0 |
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199 | #define PRIO_LOW -1 |
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200 | #define PRIO_IDLE -3 |
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201 | #define PRIO_MIN -4 |
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202 | |
|
|
203 | /* for Coro.pm */ |
|
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204 | static SV *coro_current; |
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205 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
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206 | static int coro_nready; |
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207 | |
|
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208 | /** lowlevel stuff **********************************************************/ |
153 | |
209 | |
154 | static AV * |
210 | static AV * |
155 | coro_clone_padlist (CV *cv) |
211 | coro_clone_padlist (CV *cv) |
156 | { |
212 | { |
157 | AV *padlist = CvPADLIST (cv); |
213 | AV *padlist = CvPADLIST (cv); |
… | |
… | |
214 | |
270 | |
215 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
271 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
216 | |
272 | |
217 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
273 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
218 | |
274 | |
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275 | #define CORO_MAGIC(cv) \ |
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276 | SvMAGIC (cv) \ |
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277 | ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
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278 | ? SvMAGIC (cv) \ |
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279 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
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280 | : 0 |
|
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281 | |
219 | /* the next two functions merely cache the padlists */ |
282 | /* the next two functions merely cache the padlists */ |
220 | static void |
283 | static void |
221 | get_padlist (CV *cv) |
284 | get_padlist (CV *cv) |
222 | { |
285 | { |
223 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
286 | MAGIC *mg = CORO_MAGIC (cv); |
|
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287 | AV *av; |
224 | |
288 | |
225 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
289 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
226 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
290 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
227 | else |
291 | else |
228 | { |
292 | { |
229 | #if 0 |
293 | #if CORO_PREFER_PERL_FUNCTIONS |
230 | /* this is probably cleaner, but also slower? */ |
294 | /* this is probably cleaner, but also slower? */ |
231 | CV *cp = Perl_cv_clone (cv); |
295 | CV *cp = Perl_cv_clone (cv); |
232 | CvPADLIST (cv) = CvPADLIST (cp); |
296 | CvPADLIST (cv) = CvPADLIST (cp); |
233 | CvPADLIST (cp) = 0; |
297 | CvPADLIST (cp) = 0; |
234 | SvREFCNT_dec (cp); |
298 | SvREFCNT_dec (cp); |
… | |
… | |
239 | } |
303 | } |
240 | |
304 | |
241 | static void |
305 | static void |
242 | put_padlist (CV *cv) |
306 | put_padlist (CV *cv) |
243 | { |
307 | { |
244 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
308 | MAGIC *mg = CORO_MAGIC (cv); |
|
|
309 | AV *av; |
245 | |
310 | |
246 | if (!mg) |
311 | if (!mg) |
247 | { |
312 | { |
248 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
313 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
249 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
314 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
250 | mg->mg_virtual = &vtbl_coro; |
315 | mg->mg_virtual = &vtbl_coro; |
251 | mg->mg_obj = (SV *)newAV (); |
316 | mg->mg_obj = (SV *)newAV (); |
252 | } |
317 | } |
253 | |
318 | |
254 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
319 | av = (AV *)mg->mg_obj; |
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320 | |
|
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321 | if (AvFILLp (av) >= AvMAX (av)) |
|
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322 | av_extend (av, AvMAX (av) + 1); |
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323 | |
|
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324 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
255 | } |
325 | } |
|
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326 | |
|
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327 | /** load & save, init *******************************************************/ |
256 | |
328 | |
257 | #define SB do { |
329 | #define SB do { |
258 | #define SE } while (0) |
330 | #define SE } while (0) |
259 | |
331 | |
260 | #define LOAD(state) load_state((state)); |
|
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261 | #define SAVE(state,flags) save_state((state),(flags)); |
|
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262 | |
|
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263 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
332 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
264 | |
333 | |
265 | static void |
334 | static void |
266 | load_state(Coro__State c) |
335 | load_perl (Coro__State c) |
267 | { |
336 | { |
268 | #define VAR(name,type) PL_ ## name = c->name; |
337 | #define VAR(name,type) PL_ ## name = c->name; |
269 | # include "state.h" |
338 | # include "state.h" |
270 | #undef VAR |
339 | #undef VAR |
271 | |
340 | |
272 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
341 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
273 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
342 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
274 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
343 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
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344 | if (c->irssv) |
|
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345 | { |
|
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346 | if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
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347 | SvREFCNT_dec (c->irssv); |
|
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348 | else |
|
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349 | { |
|
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350 | REPLACE_SV (PL_rs, c->irssv); |
|
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351 | if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
|
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352 | sv_setsv (c->irssv_sv, PL_rs); |
|
|
353 | } |
|
|
354 | } |
275 | |
355 | |
276 | { |
356 | { |
277 | dSP; |
357 | dSP; |
278 | CV *cv; |
358 | CV *cv; |
279 | |
359 | |
280 | /* now do the ugly restore mess */ |
360 | /* now do the ugly restore mess */ |
281 | while ((cv = (CV *)POPs)) |
361 | while ((cv = (CV *)POPs)) |
282 | { |
362 | { |
283 | AV *padlist = (AV *)POPs; |
|
|
284 | |
|
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285 | if (padlist) |
|
|
286 | { |
|
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287 | put_padlist (cv); /* mark this padlist as available */ |
363 | put_padlist (cv); /* mark this padlist as available */ |
288 | CvPADLIST(cv) = padlist; |
364 | CvDEPTH (cv) = PTR2IV (POPs); |
289 | } |
365 | CvPADLIST (cv) = (AV *)POPs; |
290 | |
|
|
291 | ++CvDEPTH(cv); |
|
|
292 | } |
366 | } |
293 | |
367 | |
294 | PUTBACK; |
368 | PUTBACK; |
295 | } |
369 | } |
|
|
370 | assert (!PL_comppad || AvARRAY (PL_comppad));//D |
296 | } |
371 | } |
297 | |
372 | |
298 | static void |
373 | static void |
299 | save_state(Coro__State c, int flags) |
374 | save_perl (Coro__State c) |
300 | { |
375 | { |
|
|
376 | assert (!PL_comppad || AvARRAY (PL_comppad));//D |
301 | { |
377 | { |
302 | dSP; |
378 | dSP; |
303 | I32 cxix = cxstack_ix; |
379 | I32 cxix = cxstack_ix; |
304 | PERL_CONTEXT *ccstk = cxstack; |
380 | PERL_CONTEXT *ccstk = cxstack; |
305 | PERL_SI *top_si = PL_curstackinfo; |
381 | PERL_SI *top_si = PL_curstackinfo; |
… | |
… | |
307 | /* |
383 | /* |
308 | * the worst thing you can imagine happens first - we have to save |
384 | * the worst thing you can imagine happens first - we have to save |
309 | * (and reinitialize) all cv's in the whole callchain :( |
385 | * (and reinitialize) all cv's in the whole callchain :( |
310 | */ |
386 | */ |
311 | |
387 | |
|
|
388 | EXTEND (SP, 3 + 1); |
312 | PUSHs (Nullsv); |
389 | PUSHs (Nullsv); |
313 | /* this loop was inspired by pp_caller */ |
390 | /* this loop was inspired by pp_caller */ |
314 | for (;;) |
391 | for (;;) |
315 | { |
392 | { |
316 | while (cxix >= 0) |
393 | while (cxix >= 0) |
317 | { |
394 | { |
318 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
395 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
319 | |
396 | |
320 | if (CxTYPE(cx) == CXt_SUB) |
397 | if (CxTYPE (cx) == CXt_SUB) |
321 | { |
398 | { |
322 | CV *cv = cx->blk_sub.cv; |
399 | CV *cv = cx->blk_sub.cv; |
|
|
400 | |
323 | if (CvDEPTH(cv)) |
401 | if (CvDEPTH (cv)) |
324 | { |
402 | { |
325 | EXTEND (SP, CvDEPTH(cv)*2); |
403 | EXTEND (SP, 3); |
326 | |
|
|
327 | while (--CvDEPTH(cv)) |
|
|
328 | { |
|
|
329 | /* this tells the restore code to increment CvDEPTH */ |
|
|
330 | PUSHs (Nullsv); |
|
|
331 | PUSHs ((SV *)cv); |
|
|
332 | } |
|
|
333 | |
|
|
334 | PUSHs ((SV *)CvPADLIST(cv)); |
404 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
405 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
335 | PUSHs ((SV *)cv); |
406 | PUSHs ((SV *)cv); |
336 | |
407 | |
|
|
408 | CvDEPTH (cv) = 0; |
337 | get_padlist (cv); |
409 | get_padlist (cv); |
338 | } |
410 | } |
339 | } |
411 | } |
340 | #ifdef CXt_FORMAT |
|
|
341 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
342 | { |
|
|
343 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
344 | /* my bold guess is as a simple, plain sub... */ |
|
|
345 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
346 | } |
|
|
347 | #endif |
|
|
348 | } |
412 | } |
349 | |
413 | |
350 | if (top_si->si_type == PERLSI_MAIN) |
414 | if (top_si->si_type == PERLSI_MAIN) |
351 | break; |
415 | break; |
352 | |
416 | |
… | |
… | |
356 | } |
420 | } |
357 | |
421 | |
358 | PUTBACK; |
422 | PUTBACK; |
359 | } |
423 | } |
360 | |
424 | |
361 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
425 | c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
362 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
426 | c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
363 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
427 | c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
|
|
428 | c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
364 | |
429 | |
365 | #define VAR(name,type)c->name = PL_ ## name; |
430 | #define VAR(name,type)c->name = PL_ ## name; |
366 | # include "state.h" |
431 | # include "state.h" |
367 | #undef VAR |
432 | #undef VAR |
368 | } |
433 | } |
… | |
… | |
371 | * allocate various perl stacks. This is an exact copy |
436 | * allocate various perl stacks. This is an exact copy |
372 | * of perl.c:init_stacks, except that it uses less memory |
437 | * of perl.c:init_stacks, except that it uses less memory |
373 | * on the (sometimes correct) assumption that coroutines do |
438 | * on the (sometimes correct) assumption that coroutines do |
374 | * not usually need a lot of stackspace. |
439 | * not usually need a lot of stackspace. |
375 | */ |
440 | */ |
|
|
441 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
442 | # define coro_init_stacks init_stacks |
|
|
443 | #else |
376 | static void |
444 | static void |
377 | coro_init_stacks () |
445 | coro_init_stacks () |
378 | { |
446 | { |
379 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
447 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
380 | PL_curstackinfo->si_type = PERLSI_MAIN; |
448 | PL_curstackinfo->si_type = PERLSI_MAIN; |
381 | PL_curstack = PL_curstackinfo->si_stack; |
449 | PL_curstack = PL_curstackinfo->si_stack; |
382 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
450 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
383 | |
451 | |
384 | PL_stack_base = AvARRAY(PL_curstack); |
452 | PL_stack_base = AvARRAY(PL_curstack); |
385 | PL_stack_sp = PL_stack_base; |
453 | PL_stack_sp = PL_stack_base; |
386 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
454 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
387 | |
455 | |
388 | New(50,PL_tmps_stack,96,SV*); |
456 | New(50,PL_tmps_stack,128,SV*); |
389 | PL_tmps_floor = -1; |
457 | PL_tmps_floor = -1; |
390 | PL_tmps_ix = -1; |
458 | PL_tmps_ix = -1; |
391 | PL_tmps_max = 96; |
459 | PL_tmps_max = 128; |
392 | |
460 | |
393 | New(54,PL_markstack,16,I32); |
461 | New(54,PL_markstack,32,I32); |
394 | PL_markstack_ptr = PL_markstack; |
462 | PL_markstack_ptr = PL_markstack; |
395 | PL_markstack_max = PL_markstack + 16; |
463 | PL_markstack_max = PL_markstack + 32; |
396 | |
464 | |
397 | #ifdef SET_MARK_OFFSET |
465 | #ifdef SET_MARK_OFFSET |
398 | SET_MARK_OFFSET; |
466 | SET_MARK_OFFSET; |
399 | #endif |
467 | #endif |
400 | |
468 | |
401 | New(54,PL_scopestack,16,I32); |
469 | New(54,PL_scopestack,32,I32); |
402 | PL_scopestack_ix = 0; |
470 | PL_scopestack_ix = 0; |
403 | PL_scopestack_max = 16; |
471 | PL_scopestack_max = 32; |
404 | |
472 | |
405 | New(54,PL_savestack,96,ANY); |
473 | New(54,PL_savestack,64,ANY); |
406 | PL_savestack_ix = 0; |
474 | PL_savestack_ix = 0; |
407 | PL_savestack_max = 96; |
475 | PL_savestack_max = 64; |
408 | |
476 | |
409 | #if !PERL_VERSION_ATLEAST (5,9,0) |
477 | #if !PERL_VERSION_ATLEAST (5,9,0) |
410 | New(54,PL_retstack,8,OP*); |
478 | New(54,PL_retstack,16,OP*); |
411 | PL_retstack_ix = 0; |
479 | PL_retstack_ix = 0; |
412 | PL_retstack_max = 8; |
480 | PL_retstack_max = 16; |
413 | #endif |
481 | #endif |
414 | } |
482 | } |
|
|
483 | #endif |
415 | |
484 | |
416 | /* |
485 | /* |
417 | * destroy the stacks, the callchain etc... |
486 | * destroy the stacks, the callchain etc... |
418 | */ |
487 | */ |
419 | static void |
488 | static void |
420 | coro_destroy_stacks () |
489 | coro_destroy_stacks () |
421 | { |
490 | { |
422 | if (!IN_DESTRUCT) |
491 | if (!IN_DESTRUCT) |
423 | { |
492 | { |
424 | /* is this ugly, I ask? */ |
493 | /* restore all saved variables and stuff */ |
425 | LEAVE_SCOPE (0); |
494 | LEAVE_SCOPE (0); |
|
|
495 | assert (PL_tmps_floor == -1); |
426 | |
496 | |
427 | /* sure it is, but more important: is it correct?? :/ */ |
497 | /* free all temporaries */ |
428 | FREETMPS; |
498 | FREETMPS; |
|
|
499 | assert (PL_tmps_ix == -1); |
429 | |
500 | |
|
|
501 | /* unwind all extra stacks */ |
430 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
502 | POPSTACK_TO (PL_mainstack); |
|
|
503 | |
|
|
504 | /* unwind main stack */ |
|
|
505 | dounwind (-1); |
431 | } |
506 | } |
432 | |
507 | |
433 | while (PL_curstackinfo->si_next) |
508 | while (PL_curstackinfo->si_next) |
434 | PL_curstackinfo = PL_curstackinfo->si_next; |
509 | PL_curstackinfo = PL_curstackinfo->si_next; |
435 | |
510 | |
436 | while (PL_curstackinfo) |
511 | while (PL_curstackinfo) |
437 | { |
512 | { |
438 | PERL_SI *p = PL_curstackinfo->si_prev; |
513 | PERL_SI *p = PL_curstackinfo->si_prev; |
439 | |
514 | |
440 | { /*D*//*remove*/ |
|
|
441 | dSP; |
|
|
442 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
443 | PUTBACK; /* possibly superfluous */ |
|
|
444 | } |
|
|
445 | |
|
|
446 | if (!IN_DESTRUCT) |
515 | if (!IN_DESTRUCT) |
447 | { |
|
|
448 | dounwind (-1);/*D*//*remove*/ |
|
|
449 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
516 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
450 | } |
|
|
451 | |
517 | |
452 | Safefree (PL_curstackinfo->si_cxstack); |
518 | Safefree (PL_curstackinfo->si_cxstack); |
453 | Safefree (PL_curstackinfo); |
519 | Safefree (PL_curstackinfo); |
454 | PL_curstackinfo = p; |
520 | PL_curstackinfo = p; |
455 | } |
521 | } |
… | |
… | |
461 | #if !PERL_VERSION_ATLEAST (5,9,0) |
527 | #if !PERL_VERSION_ATLEAST (5,9,0) |
462 | Safefree (PL_retstack); |
528 | Safefree (PL_retstack); |
463 | #endif |
529 | #endif |
464 | } |
530 | } |
465 | |
531 | |
|
|
532 | /** coroutine stack handling ************************************************/ |
|
|
533 | |
466 | static void |
534 | static void |
467 | setup_coro (struct coro *coro) |
535 | setup_coro (struct coro *coro) |
468 | { |
536 | { |
469 | /* |
537 | /* |
470 | * emulate part of the perl startup here. |
538 | * emulate part of the perl startup here. |
471 | */ |
539 | */ |
472 | |
540 | |
473 | coro_init_stacks (); |
541 | coro_init_stacks (); |
474 | |
542 | |
|
|
543 | PL_curcop = &PL_compiling; |
|
|
544 | PL_in_eval = EVAL_NULL; |
475 | PL_curcop = 0; |
545 | PL_comppad = 0; |
476 | PL_in_eval = 0; |
|
|
477 | PL_curpm = 0; |
546 | PL_curpm = 0; |
|
|
547 | PL_localizing = 0; |
|
|
548 | PL_dirty = 0; |
|
|
549 | PL_restartop = 0; |
478 | |
550 | |
479 | { |
551 | { |
480 | dSP; |
552 | dSP; |
481 | LOGOP myop; |
553 | LOGOP myop; |
482 | |
554 | |
483 | /* I have no idea why this is needed, but it is */ |
|
|
484 | PUSHMARK (SP); |
|
|
485 | |
|
|
486 | SvREFCNT_dec (GvAV (PL_defgv)); |
555 | SvREFCNT_dec (GvAV (PL_defgv)); |
487 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
556 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
488 | |
557 | |
489 | Zero (&myop, 1, LOGOP); |
558 | Zero (&myop, 1, LOGOP); |
490 | myop.op_next = Nullop; |
559 | myop.op_next = Nullop; |
491 | myop.op_flags = OPf_WANT_VOID; |
560 | myop.op_flags = OPf_WANT_VOID; |
492 | |
561 | |
493 | PL_op = (OP *)&myop; |
|
|
494 | |
|
|
495 | PUSHMARK (SP); |
562 | PUSHMARK (SP); |
496 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
563 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
497 | PUTBACK; |
564 | PUTBACK; |
|
|
565 | PL_op = (OP *)&myop; |
498 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
566 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
499 | SPAGAIN; |
567 | SPAGAIN; |
500 | |
|
|
501 | ENTER; /* necessary e.g. for dounwind */ |
|
|
502 | } |
568 | } |
|
|
569 | |
|
|
570 | ENTER; /* necessary e.g. for dounwind */ |
503 | } |
571 | } |
504 | |
572 | |
505 | static void |
573 | static void |
506 | free_coro_mortal () |
574 | free_coro_mortal () |
507 | { |
575 | { |
… | |
… | |
510 | SvREFCNT_dec (coro_mortal); |
578 | SvREFCNT_dec (coro_mortal); |
511 | coro_mortal = 0; |
579 | coro_mortal = 0; |
512 | } |
580 | } |
513 | } |
581 | } |
514 | |
582 | |
|
|
583 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
515 | static void NOINLINE |
584 | static void NOINLINE |
516 | prepare_cctx (coro_cctx *cctx) |
585 | prepare_cctx (coro_cctx *cctx) |
517 | { |
586 | { |
518 | dSP; |
587 | dSP; |
519 | LOGOP myop; |
588 | LOGOP myop; |
520 | |
589 | |
521 | Zero (&myop, 1, LOGOP); |
590 | Zero (&myop, 1, LOGOP); |
522 | myop.op_next = PL_op; |
591 | myop.op_next = PL_op; |
523 | myop.op_flags = OPf_WANT_VOID; |
592 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
524 | |
|
|
525 | sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx)); |
|
|
526 | |
593 | |
527 | PUSHMARK (SP); |
594 | PUSHMARK (SP); |
|
|
595 | EXTEND (SP, 2); |
|
|
596 | PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
528 | XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
597 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
529 | PUTBACK; |
598 | PUTBACK; |
|
|
599 | PL_op = (OP *)&myop; |
530 | PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); |
600 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
531 | SPAGAIN; |
601 | SPAGAIN; |
532 | } |
602 | } |
533 | |
603 | |
534 | static void |
604 | static void |
535 | coro_run (void *arg) |
605 | coro_run (void *arg) |
536 | { |
606 | { |
537 | /* coro_run is the alternative epilogue of transfer() */ |
607 | /* coro_run is the alternative tail of transfer(), so unlock here. */ |
538 | UNLOCK; |
608 | UNLOCK; |
539 | |
609 | |
540 | /* |
610 | /* |
541 | * this is a _very_ stripped down perl interpreter ;) |
611 | * this is a _very_ stripped down perl interpreter ;) |
542 | */ |
612 | */ |
… | |
… | |
544 | |
614 | |
545 | /* inject call to cctx_init */ |
615 | /* inject call to cctx_init */ |
546 | prepare_cctx ((coro_cctx *)arg); |
616 | prepare_cctx ((coro_cctx *)arg); |
547 | |
617 | |
548 | /* somebody will hit me for both perl_run and PL_restartop */ |
618 | /* somebody will hit me for both perl_run and PL_restartop */ |
|
|
619 | PL_restartop = PL_op; |
549 | perl_run (PL_curinterp); |
620 | perl_run (PL_curinterp); |
550 | |
621 | |
551 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
622 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
552 | abort (); |
623 | abort (); |
553 | } |
624 | } |
554 | |
625 | |
555 | static coro_cctx * |
626 | static coro_cctx * |
556 | cctx_new () |
627 | cctx_new () |
557 | { |
628 | { |
558 | coro_cctx *cctx; |
629 | coro_cctx *cctx; |
|
|
630 | void *stack_start; |
|
|
631 | size_t stack_size; |
559 | |
632 | |
560 | ++cctx_count; |
633 | ++cctx_count; |
561 | |
634 | |
562 | New (0, cctx, 1, coro_cctx); |
635 | Newz (0, cctx, 1, coro_cctx); |
563 | |
636 | |
564 | #if HAVE_MMAP |
637 | #if HAVE_MMAP |
565 | |
638 | |
566 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
639 | cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
567 | /* mmap suppsedly does allocate-on-write for us */ |
640 | /* mmap supposedly does allocate-on-write for us */ |
568 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
641 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
569 | |
642 | |
570 | if (cctx->sptr == (void *)-1) |
643 | if (cctx->sptr != (void *)-1) |
571 | { |
|
|
572 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
573 | _exit (EXIT_FAILURE); |
|
|
574 | } |
644 | { |
575 | |
|
|
576 | # if STACKGUARD |
645 | # if CORO_STACKGUARD |
577 | mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
646 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
578 | # endif |
647 | # endif |
|
|
648 | stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
|
|
649 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
650 | cctx->mapped = 1; |
|
|
651 | } |
|
|
652 | else |
|
|
653 | #endif |
|
|
654 | { |
|
|
655 | cctx->ssize = coro_stacksize * (long)sizeof (long); |
|
|
656 | New (0, cctx->sptr, coro_stacksize, long); |
579 | |
657 | |
580 | #else |
|
|
581 | |
|
|
582 | cctx->ssize = STACKSIZE * (long)sizeof (long); |
|
|
583 | New (0, cctx->sptr, STACKSIZE, long); |
|
|
584 | |
|
|
585 | if (!cctx->sptr) |
658 | if (!cctx->sptr) |
586 | { |
659 | { |
587 | perror ("FATAL: unable to malloc stack for coroutine"); |
660 | perror ("FATAL: unable to allocate stack for coroutine"); |
588 | _exit (EXIT_FAILURE); |
661 | _exit (EXIT_FAILURE); |
589 | } |
662 | } |
590 | |
663 | |
591 | #endif |
664 | stack_start = cctx->sptr; |
|
|
665 | stack_size = cctx->ssize; |
|
|
666 | } |
592 | |
667 | |
593 | #if USE_VALGRIND |
668 | REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
594 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ( |
|
|
595 | STACKGUARD * PAGESIZE + (char *)cctx->sptr, |
|
|
596 | cctx->ssize + (char *)cctx->sptr |
|
|
597 | ); |
|
|
598 | #endif |
|
|
599 | |
|
|
600 | coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize); |
669 | coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); |
601 | |
670 | |
602 | return cctx; |
671 | return cctx; |
603 | } |
672 | } |
604 | |
673 | |
605 | static void |
674 | static void |
606 | cctx_free (coro_cctx *cctx) |
675 | cctx_destroy (coro_cctx *cctx) |
607 | { |
676 | { |
608 | if (!cctx) |
677 | if (!cctx) |
609 | return; |
678 | return; |
610 | |
679 | |
611 | --cctx_count; |
680 | --cctx_count; |
612 | |
681 | |
613 | #if USE_VALGRIND |
682 | #if CORO_USE_VALGRIND |
614 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
683 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
615 | #endif |
684 | #endif |
616 | |
685 | |
617 | #if HAVE_MMAP |
686 | #if HAVE_MMAP |
|
|
687 | if (cctx->mapped) |
618 | munmap (cctx->sptr, cctx->ssize); |
688 | munmap (cctx->sptr, cctx->ssize); |
619 | #else |
689 | else |
|
|
690 | #endif |
620 | Safefree (cctx->sptr); |
691 | Safefree (cctx->sptr); |
621 | #endif |
|
|
622 | |
692 | |
623 | Safefree (cctx); |
693 | Safefree (cctx); |
624 | } |
694 | } |
625 | |
695 | |
626 | static coro_cctx * |
696 | static coro_cctx * |
627 | cctx_get () |
697 | cctx_get () |
628 | { |
698 | { |
629 | coro_cctx *cctx; |
|
|
630 | |
|
|
631 | if (cctx_first) |
699 | while (cctx_first) |
632 | { |
700 | { |
|
|
701 | coro_cctx *cctx = cctx_first; |
|
|
702 | cctx_first = cctx->next; |
633 | --cctx_idle; |
703 | --cctx_idle; |
634 | cctx = cctx_first; |
704 | |
635 | cctx_first = cctx->next; |
705 | if (cctx->ssize >= coro_stacksize) |
|
|
706 | return cctx; |
|
|
707 | |
|
|
708 | cctx_destroy (cctx); |
636 | } |
709 | } |
637 | else |
710 | |
638 | { |
|
|
639 | cctx = cctx_new (); |
|
|
640 | PL_op = PL_op->op_next; |
711 | PL_op = PL_op->op_next; |
641 | } |
|
|
642 | |
|
|
643 | return cctx; |
712 | return cctx_new (); |
644 | } |
713 | } |
645 | |
714 | |
646 | static void |
715 | static void |
647 | cctx_put (coro_cctx *cctx) |
716 | cctx_put (coro_cctx *cctx) |
648 | { |
717 | { |
|
|
718 | /* free another cctx if overlimit */ |
|
|
719 | if (cctx_idle >= MAX_IDLE_CCTX) |
|
|
720 | { |
|
|
721 | coro_cctx *first = cctx_first; |
|
|
722 | cctx_first = first->next; |
|
|
723 | --cctx_idle; |
|
|
724 | |
|
|
725 | assert (!first->inuse); |
|
|
726 | cctx_destroy (first); |
|
|
727 | } |
|
|
728 | |
649 | ++cctx_idle; |
729 | ++cctx_idle; |
650 | cctx->next = cctx_first; |
730 | cctx->next = cctx_first; |
651 | cctx_first = cctx; |
731 | cctx_first = cctx; |
652 | } |
732 | } |
653 | |
733 | |
|
|
734 | /** coroutine switching *****************************************************/ |
|
|
735 | |
654 | /* never call directly, always through the coro_state_transfer global variable */ |
736 | /* never call directly, always through the coro_state_transfer global variable */ |
655 | static void NOINLINE |
737 | static void NOINLINE |
656 | transfer (struct coro *prev, struct coro *next, int flags) |
738 | transfer (struct coro *prev, struct coro *next) |
657 | { |
739 | { |
658 | dSTACKLEVEL; |
740 | dSTACKLEVEL; |
659 | |
741 | |
660 | /* sometimes transfer is only called to set idle_sp */ |
742 | /* sometimes transfer is only called to set idle_sp */ |
661 | if (flags == TRANSFER_SET_STACKLEVEL) |
743 | if (!next) |
|
|
744 | { |
662 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
745 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
746 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
747 | } |
663 | else if (prev != next) |
748 | else if (prev != next) |
664 | { |
749 | { |
665 | coro_cctx *prev__cctx; |
750 | coro_cctx *prev__cctx; |
666 | |
751 | |
|
|
752 | if (prev->flags & CF_NEW) |
|
|
753 | { |
|
|
754 | /* create a new empty context */ |
|
|
755 | Newz (0, prev->cctx, 1, coro_cctx); |
|
|
756 | prev->cctx->inuse = 1; |
|
|
757 | prev->flags &= ~CF_NEW; |
|
|
758 | prev->flags |= CF_RUNNING; |
|
|
759 | } |
|
|
760 | |
|
|
761 | /*TODO: must not croak here */ |
|
|
762 | if (!prev->flags & CF_RUNNING) |
|
|
763 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
|
|
764 | |
|
|
765 | if (next->flags & CF_RUNNING) |
|
|
766 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
|
|
767 | |
|
|
768 | if (next->flags & CF_DESTROYED) |
|
|
769 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
|
|
770 | |
|
|
771 | prev->flags &= ~CF_RUNNING; |
|
|
772 | next->flags |= CF_RUNNING; |
|
|
773 | |
667 | LOCK; |
774 | LOCK; |
668 | |
775 | |
669 | if (next->mainstack) |
776 | if (next->flags & CF_NEW) |
670 | { |
777 | { |
671 | /* coroutine already started */ |
778 | /* need to start coroutine */ |
672 | SAVE (prev, flags); |
779 | next->flags &= ~CF_NEW; |
673 | LOAD (next); |
780 | /* first get rid of the old state */ |
|
|
781 | save_perl (prev); |
|
|
782 | /* setup coroutine call */ |
|
|
783 | setup_coro (next); |
|
|
784 | /* need a new stack */ |
|
|
785 | assert (!next->cctx); |
674 | } |
786 | } |
675 | else |
787 | else |
676 | { |
788 | { |
677 | /* need to start coroutine */ |
789 | /* coroutine already started */ |
678 | /* first get rid of the old state */ |
790 | save_perl (prev); |
679 | SAVE (prev, -1); |
791 | load_perl (next); |
680 | /* setup coroutine call */ |
|
|
681 | setup_coro (next); |
|
|
682 | /* need a stack */ |
|
|
683 | next->cctx = 0; |
|
|
684 | } |
792 | } |
685 | |
|
|
686 | if (!prev->cctx) |
|
|
687 | /* create a new empty context */ |
|
|
688 | Newz (0, prev->cctx, 1, coro_cctx); |
|
|
689 | |
793 | |
690 | prev__cctx = prev->cctx; |
794 | prev__cctx = prev->cctx; |
691 | |
795 | |
692 | /* possibly "free" the cctx */ |
796 | /* possibly "free" the cctx */ |
693 | if (prev__cctx->idle_sp == STACKLEVEL) |
797 | if (prev__cctx->idle_sp == STACKLEVEL) |
694 | { |
798 | { |
|
|
799 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
|
|
800 | assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
|
|
801 | |
|
|
802 | prev->cctx = 0; |
|
|
803 | |
695 | cctx_put (prev__cctx); |
804 | cctx_put (prev__cctx); |
696 | prev->cctx = 0; |
805 | prev__cctx->inuse = 0; |
697 | } |
806 | } |
698 | |
807 | |
699 | if (!next->cctx) |
808 | if (!next->cctx) |
|
|
809 | { |
700 | next->cctx = cctx_get (); |
810 | next->cctx = cctx_get (); |
|
|
811 | assert (!next->cctx->inuse); |
|
|
812 | next->cctx->inuse = 1; |
|
|
813 | } |
701 | |
814 | |
702 | if (prev__cctx != next->cctx) |
815 | if (prev__cctx != next->cctx) |
703 | { |
816 | { |
704 | prev__cctx->top_env = PL_top_env; |
817 | prev__cctx->top_env = PL_top_env; |
705 | PL_top_env = next->cctx->top_env; |
818 | PL_top_env = next->cctx->top_env; |
706 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
819 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
707 | } |
820 | } |
708 | |
821 | |
709 | free_coro_mortal (); |
822 | free_coro_mortal (); |
710 | |
|
|
711 | UNLOCK; |
823 | UNLOCK; |
712 | } |
824 | } |
713 | } |
825 | } |
714 | |
826 | |
715 | struct transfer_args |
827 | struct transfer_args |
716 | { |
828 | { |
717 | struct coro *prev, *next; |
829 | struct coro *prev, *next; |
718 | int flags; |
|
|
719 | }; |
830 | }; |
720 | |
831 | |
721 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
832 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next) |
722 | |
833 | |
|
|
834 | /** high level stuff ********************************************************/ |
|
|
835 | |
723 | static void |
836 | static int |
724 | coro_state_destroy (struct coro *coro) |
837 | coro_state_destroy (struct coro *coro) |
725 | { |
838 | { |
726 | if (coro->refcnt--) |
839 | if (coro->flags & CF_DESTROYED) |
727 | return; |
840 | return 0; |
|
|
841 | |
|
|
842 | coro->flags |= CF_DESTROYED; |
|
|
843 | |
|
|
844 | if (coro->flags & CF_READY) |
|
|
845 | { |
|
|
846 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
847 | /* alternative: look through all ready queues and remove the coro */ |
|
|
848 | LOCK; |
|
|
849 | --coro_nready; |
|
|
850 | UNLOCK; |
|
|
851 | } |
|
|
852 | else |
|
|
853 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
728 | |
854 | |
729 | if (coro->mainstack && coro->mainstack != main_mainstack) |
855 | if (coro->mainstack && coro->mainstack != main_mainstack) |
730 | { |
856 | { |
731 | struct coro temp; |
857 | struct coro temp; |
732 | |
858 | |
733 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
859 | assert (!(coro->flags & CF_RUNNING)); |
734 | LOAD (coro); |
860 | |
|
|
861 | Zero (&temp, 1, struct coro); |
|
|
862 | temp.save = CORO_SAVE_ALL; |
|
|
863 | |
|
|
864 | if (coro->flags & CF_RUNNING) |
|
|
865 | croak ("FATAL: tried to destroy currently running coroutine"); |
|
|
866 | |
|
|
867 | save_perl (&temp); |
|
|
868 | load_perl (coro); |
735 | |
869 | |
736 | coro_destroy_stacks (); |
870 | coro_destroy_stacks (); |
737 | |
871 | |
738 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
872 | load_perl (&temp); /* this will get rid of defsv etc.. */ |
739 | |
873 | |
740 | coro->mainstack = 0; |
874 | coro->mainstack = 0; |
741 | } |
875 | } |
742 | |
876 | |
743 | cctx_free (coro->cctx); |
877 | cctx_destroy (coro->cctx); |
744 | SvREFCNT_dec (coro->args); |
878 | SvREFCNT_dec (coro->args); |
745 | Safefree (coro); |
879 | |
|
|
880 | return 1; |
746 | } |
881 | } |
747 | |
882 | |
748 | static int |
883 | static int |
749 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
884 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
750 | { |
885 | { |
751 | struct coro *coro = (struct coro *)mg->mg_ptr; |
886 | struct coro *coro = (struct coro *)mg->mg_ptr; |
752 | mg->mg_ptr = 0; |
887 | mg->mg_ptr = 0; |
753 | |
888 | |
|
|
889 | if (--coro->refcnt < 0) |
|
|
890 | { |
754 | coro_state_destroy (coro); |
891 | coro_state_destroy (coro); |
|
|
892 | Safefree (coro); |
|
|
893 | } |
755 | |
894 | |
756 | return 0; |
895 | return 0; |
757 | } |
896 | } |
758 | |
897 | |
759 | static int |
898 | static int |
… | |
… | |
766 | return 0; |
905 | return 0; |
767 | } |
906 | } |
768 | |
907 | |
769 | static MGVTBL coro_state_vtbl = { |
908 | static MGVTBL coro_state_vtbl = { |
770 | 0, 0, 0, 0, |
909 | 0, 0, 0, 0, |
771 | coro_state_clear, |
910 | coro_state_free, |
772 | 0, |
911 | 0, |
773 | #ifdef MGf_DUP |
912 | #ifdef MGf_DUP |
774 | coro_state_dup, |
913 | coro_state_dup, |
775 | #else |
914 | #else |
776 | # define MGf_DUP 0 |
915 | # define MGf_DUP 0 |
… | |
… | |
792 | /* very slow, but rare, check */ |
931 | /* very slow, but rare, check */ |
793 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
932 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
794 | croak ("Coro::State object required"); |
933 | croak ("Coro::State object required"); |
795 | } |
934 | } |
796 | |
935 | |
797 | mg = SvMAGIC (coro); |
936 | mg = CORO_MAGIC (coro); |
798 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
799 | return (struct coro *)mg->mg_ptr; |
937 | return (struct coro *)mg->mg_ptr; |
800 | } |
938 | } |
801 | |
939 | |
802 | static void |
940 | static void |
803 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
941 | prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
804 | { |
942 | { |
805 | ta->prev = SvSTATE (prev); |
943 | ta->prev = SvSTATE (prev_sv); |
806 | ta->next = SvSTATE (next); |
944 | ta->next = SvSTATE (next_sv); |
807 | ta->flags = flags; |
|
|
808 | } |
945 | } |
809 | |
946 | |
810 | static void |
947 | static void |
811 | api_transfer (SV *prev, SV *next, int flags) |
948 | api_transfer (SV *prev_sv, SV *next_sv) |
812 | { |
949 | { |
813 | dTHX; |
|
|
814 | struct transfer_args ta; |
950 | struct transfer_args ta; |
815 | |
951 | |
816 | prepare_transfer (&ta, prev, next, flags); |
952 | prepare_transfer (&ta, prev_sv, next_sv); |
817 | TRANSFER (ta); |
953 | TRANSFER (ta); |
818 | } |
954 | } |
819 | |
955 | |
|
|
956 | static int |
|
|
957 | api_save (SV *coro_sv, int new_save) |
|
|
958 | { |
|
|
959 | struct coro *coro = SvSTATE (coro_sv); |
|
|
960 | int old_save = coro->save; |
|
|
961 | |
|
|
962 | if (new_save >= 0) |
|
|
963 | coro->save = new_save; |
|
|
964 | |
|
|
965 | return old_save; |
|
|
966 | } |
|
|
967 | |
820 | /** Coro ********************************************************************/ |
968 | /** Coro ********************************************************************/ |
821 | |
969 | |
822 | #define PRIO_MAX 3 |
|
|
823 | #define PRIO_HIGH 1 |
|
|
824 | #define PRIO_NORMAL 0 |
|
|
825 | #define PRIO_LOW -1 |
|
|
826 | #define PRIO_IDLE -3 |
|
|
827 | #define PRIO_MIN -4 |
|
|
828 | |
|
|
829 | /* for Coro.pm */ |
|
|
830 | static GV *coro_current, *coro_idle; |
|
|
831 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
|
|
832 | static int coro_nready; |
|
|
833 | |
|
|
834 | static void |
970 | static void |
835 | coro_enq (SV *sv) |
971 | coro_enq (SV *coro_sv) |
836 | { |
972 | { |
837 | int prio; |
|
|
838 | |
|
|
839 | if (SvTYPE (sv) != SVt_PVHV) |
|
|
840 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
841 | |
|
|
842 | prio = SvSTATE (sv)->prio; |
|
|
843 | |
|
|
844 | av_push (coro_ready [prio - PRIO_MIN], sv); |
973 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
845 | coro_nready++; |
|
|
846 | } |
974 | } |
847 | |
975 | |
848 | static SV * |
976 | static SV * |
849 | coro_deq (int min_prio) |
977 | coro_deq (int min_prio) |
850 | { |
978 | { |
… | |
… | |
854 | if (min_prio < 0) |
982 | if (min_prio < 0) |
855 | min_prio = 0; |
983 | min_prio = 0; |
856 | |
984 | |
857 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
985 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
858 | if (AvFILLp (coro_ready [prio]) >= 0) |
986 | if (AvFILLp (coro_ready [prio]) >= 0) |
859 | { |
|
|
860 | coro_nready--; |
|
|
861 | return av_shift (coro_ready [prio]); |
987 | return av_shift (coro_ready [prio]); |
862 | } |
|
|
863 | |
988 | |
864 | return 0; |
989 | return 0; |
865 | } |
990 | } |
866 | |
991 | |
867 | static void |
992 | static int |
868 | api_ready (SV *coro) |
993 | api_ready (SV *coro_sv) |
869 | { |
994 | { |
870 | dTHX; |
995 | struct coro *coro; |
871 | |
996 | |
872 | if (SvROK (coro)) |
997 | if (SvROK (coro_sv)) |
873 | coro = SvRV (coro); |
998 | coro_sv = SvRV (coro_sv); |
|
|
999 | |
|
|
1000 | coro = SvSTATE (coro_sv); |
|
|
1001 | |
|
|
1002 | if (coro->flags & CF_READY) |
|
|
1003 | return 0; |
|
|
1004 | |
|
|
1005 | coro->flags |= CF_READY; |
874 | |
1006 | |
875 | LOCK; |
1007 | LOCK; |
876 | coro_enq (SvREFCNT_inc (coro)); |
1008 | coro_enq (SvREFCNT_inc (coro_sv)); |
|
|
1009 | ++coro_nready; |
877 | UNLOCK; |
1010 | UNLOCK; |
|
|
1011 | |
|
|
1012 | return 1; |
|
|
1013 | } |
|
|
1014 | |
|
|
1015 | static int |
|
|
1016 | api_is_ready (SV *coro_sv) |
|
|
1017 | { |
|
|
1018 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
878 | } |
1019 | } |
879 | |
1020 | |
880 | static void |
1021 | static void |
881 | prepare_schedule (struct transfer_args *ta) |
1022 | prepare_schedule (struct transfer_args *ta) |
882 | { |
1023 | { |
883 | SV *current, *prev, *next; |
1024 | SV *prev_sv, *next_sv; |
884 | |
|
|
885 | current = GvSV (coro_current); |
|
|
886 | |
1025 | |
887 | for (;;) |
1026 | for (;;) |
888 | { |
1027 | { |
889 | LOCK; |
1028 | LOCK; |
890 | next = coro_deq (PRIO_MIN); |
1029 | next_sv = coro_deq (PRIO_MIN); |
|
|
1030 | |
|
|
1031 | /* nothing to schedule: call the idle handler */ |
|
|
1032 | if (!next_sv) |
|
|
1033 | { |
|
|
1034 | dSP; |
|
|
1035 | UNLOCK; |
|
|
1036 | |
|
|
1037 | ENTER; |
|
|
1038 | SAVETMPS; |
|
|
1039 | |
|
|
1040 | PUSHMARK (SP); |
|
|
1041 | PUTBACK; |
|
|
1042 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
|
|
1043 | |
|
|
1044 | FREETMPS; |
|
|
1045 | LEAVE; |
|
|
1046 | continue; |
|
|
1047 | } |
|
|
1048 | |
|
|
1049 | ta->next = SvSTATE (next_sv); |
|
|
1050 | |
|
|
1051 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1052 | if (ta->next->flags & CF_DESTROYED) |
|
|
1053 | { |
|
|
1054 | UNLOCK; |
|
|
1055 | SvREFCNT_dec (next_sv); |
|
|
1056 | /* coro_nready is already taken care of by destroy */ |
|
|
1057 | continue; |
|
|
1058 | } |
|
|
1059 | |
|
|
1060 | --coro_nready; |
891 | UNLOCK; |
1061 | UNLOCK; |
892 | |
|
|
893 | if (next) |
|
|
894 | break; |
1062 | break; |
895 | |
|
|
896 | { |
|
|
897 | dSP; |
|
|
898 | |
|
|
899 | ENTER; |
|
|
900 | SAVETMPS; |
|
|
901 | |
|
|
902 | PUSHMARK (SP); |
|
|
903 | PUTBACK; |
|
|
904 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
905 | |
|
|
906 | FREETMPS; |
|
|
907 | LEAVE; |
|
|
908 | } |
1063 | } |
909 | } |
|
|
910 | |
|
|
911 | prev = SvRV (current); |
|
|
912 | SvRV (current) = next; |
|
|
913 | |
1064 | |
914 | /* free this only after the transfer */ |
1065 | /* free this only after the transfer */ |
|
|
1066 | prev_sv = SvRV (coro_current); |
|
|
1067 | SvRV_set (coro_current, next_sv); |
|
|
1068 | ta->prev = SvSTATE (prev_sv); |
|
|
1069 | |
|
|
1070 | assert (ta->next->flags & CF_READY); |
|
|
1071 | ta->next->flags &= ~CF_READY; |
|
|
1072 | |
915 | LOCK; |
1073 | LOCK; |
916 | free_coro_mortal (); |
1074 | free_coro_mortal (); |
|
|
1075 | coro_mortal = prev_sv; |
917 | UNLOCK; |
1076 | UNLOCK; |
918 | coro_mortal = prev; |
|
|
919 | |
|
|
920 | ta->prev = SvSTATE (prev); |
|
|
921 | ta->next = SvSTATE (next); |
|
|
922 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
923 | } |
1077 | } |
924 | |
1078 | |
925 | static void |
1079 | static void |
926 | prepare_cede (struct transfer_args *ta) |
1080 | prepare_cede (struct transfer_args *ta) |
927 | { |
1081 | { |
928 | LOCK; |
1082 | api_ready (coro_current); |
929 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
930 | UNLOCK; |
|
|
931 | |
|
|
932 | prepare_schedule (ta); |
1083 | prepare_schedule (ta); |
933 | } |
1084 | } |
934 | |
1085 | |
|
|
1086 | static int |
|
|
1087 | prepare_cede_notself (struct transfer_args *ta) |
|
|
1088 | { |
|
|
1089 | if (coro_nready) |
|
|
1090 | { |
|
|
1091 | SV *prev = SvRV (coro_current); |
|
|
1092 | prepare_schedule (ta); |
|
|
1093 | api_ready (prev); |
|
|
1094 | return 1; |
|
|
1095 | } |
|
|
1096 | else |
|
|
1097 | return 0; |
|
|
1098 | } |
|
|
1099 | |
935 | static void |
1100 | static void |
936 | api_schedule (void) |
1101 | api_schedule (void) |
937 | { |
1102 | { |
938 | dTHX; |
|
|
939 | struct transfer_args ta; |
1103 | struct transfer_args ta; |
940 | |
1104 | |
941 | prepare_schedule (&ta); |
1105 | prepare_schedule (&ta); |
942 | TRANSFER (ta); |
1106 | TRANSFER (ta); |
943 | } |
1107 | } |
944 | |
1108 | |
945 | static void |
1109 | static int |
946 | api_cede (void) |
1110 | api_cede (void) |
947 | { |
1111 | { |
948 | dTHX; |
|
|
949 | struct transfer_args ta; |
1112 | struct transfer_args ta; |
950 | |
1113 | |
951 | prepare_cede (&ta); |
1114 | prepare_cede (&ta); |
|
|
1115 | |
|
|
1116 | if (ta.prev != ta.next) |
|
|
1117 | { |
952 | TRANSFER (ta); |
1118 | TRANSFER (ta); |
|
|
1119 | return 1; |
|
|
1120 | } |
|
|
1121 | else |
|
|
1122 | return 0; |
|
|
1123 | } |
|
|
1124 | |
|
|
1125 | static int |
|
|
1126 | api_cede_notself (void) |
|
|
1127 | { |
|
|
1128 | struct transfer_args ta; |
|
|
1129 | |
|
|
1130 | if (prepare_cede_notself (&ta)) |
|
|
1131 | { |
|
|
1132 | TRANSFER (ta); |
|
|
1133 | return 1; |
|
|
1134 | } |
|
|
1135 | else |
|
|
1136 | return 0; |
953 | } |
1137 | } |
954 | |
1138 | |
955 | MODULE = Coro::State PACKAGE = Coro::State |
1139 | MODULE = Coro::State PACKAGE = Coro::State |
956 | |
1140 | |
957 | PROTOTYPES: DISABLE |
1141 | PROTOTYPES: DISABLE |
… | |
… | |
963 | #endif |
1147 | #endif |
964 | BOOT_PAGESIZE; |
1148 | BOOT_PAGESIZE; |
965 | |
1149 | |
966 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1150 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
967 | |
1151 | |
968 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1152 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
969 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1153 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
970 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1154 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
|
|
1155 | newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
|
|
1156 | newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
971 | |
1157 | |
972 | main_mainstack = PL_mainstack; |
1158 | main_mainstack = PL_mainstack; |
973 | |
1159 | |
974 | coroapi.ver = CORO_API_VERSION; |
1160 | coroapi.ver = CORO_API_VERSION; |
975 | coroapi.transfer = api_transfer; |
1161 | coroapi.transfer = api_transfer; |
… | |
… | |
985 | HV *hv; |
1171 | HV *hv; |
986 | int i; |
1172 | int i; |
987 | |
1173 | |
988 | Newz (0, coro, 1, struct coro); |
1174 | Newz (0, coro, 1, struct coro); |
989 | coro->args = newAV (); |
1175 | coro->args = newAV (); |
|
|
1176 | coro->save = CORO_SAVE_ALL; |
|
|
1177 | coro->flags = CF_NEW; |
990 | |
1178 | |
991 | hv = newHV (); |
1179 | hv = newHV (); |
992 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1180 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
993 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1181 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
994 | |
1182 | |
995 | for (i = 1; i < items; i++) |
1183 | for (i = 1; i < items; i++) |
996 | av_push (coro->args, newSVsv (ST (i))); |
1184 | av_push (coro->args, newSVsv (ST (i))); |
997 | } |
1185 | } |
998 | OUTPUT: |
1186 | OUTPUT: |
|
|
1187 | RETVAL |
|
|
1188 | |
|
|
1189 | int |
|
|
1190 | save (SV *coro, int new_save = -1) |
|
|
1191 | CODE: |
|
|
1192 | RETVAL = api_save (coro, new_save); |
|
|
1193 | OUTPUT: |
999 | RETVAL |
1194 | RETVAL |
1000 | |
1195 | |
1001 | void |
1196 | void |
1002 | _set_stacklevel (...) |
1197 | _set_stacklevel (...) |
1003 | ALIAS: |
1198 | ALIAS: |
1004 | Coro::State::transfer = 1 |
1199 | Coro::State::transfer = 1 |
1005 | Coro::schedule = 2 |
1200 | Coro::schedule = 2 |
1006 | Coro::cede = 3 |
1201 | Coro::cede = 3 |
1007 | Coro::Cont::yield = 4 |
1202 | Coro::cede_notself = 4 |
1008 | CODE: |
1203 | CODE: |
1009 | { |
1204 | { |
1010 | struct transfer_args ta; |
1205 | struct transfer_args ta; |
1011 | |
1206 | |
1012 | switch (ix) |
1207 | switch (ix) |
1013 | { |
1208 | { |
1014 | case 0: |
1209 | case 0: |
1015 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1210 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1016 | ta.next = 0; |
1211 | ta.next = 0; |
1017 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1018 | break; |
1212 | break; |
1019 | |
1213 | |
1020 | case 1: |
1214 | case 1: |
1021 | if (items != 3) |
1215 | if (items != 2) |
1022 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
1216 | croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
1023 | |
1217 | |
1024 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
1218 | prepare_transfer (&ta, ST (0), ST (1)); |
1025 | break; |
1219 | break; |
1026 | |
1220 | |
1027 | case 2: |
1221 | case 2: |
1028 | prepare_schedule (&ta); |
1222 | prepare_schedule (&ta); |
1029 | break; |
1223 | break; |
… | |
… | |
1031 | case 3: |
1225 | case 3: |
1032 | prepare_cede (&ta); |
1226 | prepare_cede (&ta); |
1033 | break; |
1227 | break; |
1034 | |
1228 | |
1035 | case 4: |
1229 | case 4: |
1036 | { |
1230 | if (!prepare_cede_notself (&ta)) |
1037 | SV *yieldstack; |
1231 | XSRETURN_EMPTY; |
1038 | SV *sv; |
|
|
1039 | AV *defav = GvAV (PL_defgv); |
|
|
1040 | |
1232 | |
1041 | yieldstack = *hv_fetch ( |
|
|
1042 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1043 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1044 | 0 |
|
|
1045 | ); |
|
|
1046 | |
|
|
1047 | /* set up @_ -- ugly */ |
|
|
1048 | av_clear (defav); |
|
|
1049 | av_fill (defav, items - 1); |
|
|
1050 | while (items--) |
|
|
1051 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1052 | |
|
|
1053 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1054 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1055 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1056 | ta.flags = 0; |
|
|
1057 | SvREFCNT_dec (sv); |
|
|
1058 | } |
|
|
1059 | break; |
1233 | break; |
1060 | |
|
|
1061 | } |
1234 | } |
1062 | |
1235 | |
|
|
1236 | BARRIER; |
1063 | TRANSFER (ta); |
1237 | TRANSFER (ta); |
1064 | } |
|
|
1065 | |
1238 | |
1066 | void |
1239 | if (GIMME_V != G_VOID && ta.next != ta.prev) |
1067 | _clone_state_from (SV *dst, SV *src) |
1240 | XSRETURN_YES; |
|
|
1241 | } |
|
|
1242 | |
|
|
1243 | bool |
|
|
1244 | _destroy (SV *coro_sv) |
1068 | CODE: |
1245 | CODE: |
1069 | { |
1246 | RETVAL = coro_state_destroy (SvSTATE (coro_sv)); |
1070 | struct coro *coro_src = SvSTATE (src); |
1247 | OUTPUT: |
1071 | |
1248 | RETVAL |
1072 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
|
|
1073 | |
|
|
1074 | ++coro_src->refcnt; |
|
|
1075 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
|
|
1076 | } |
|
|
1077 | |
1249 | |
1078 | void |
1250 | void |
1079 | _exit (code) |
1251 | _exit (code) |
1080 | int code |
1252 | int code |
1081 | PROTOTYPE: $ |
1253 | PROTOTYPE: $ |
1082 | CODE: |
1254 | CODE: |
1083 | _exit (code); |
1255 | _exit (code); |
1084 | |
1256 | |
1085 | int |
1257 | int |
|
|
1258 | cctx_stacksize (int new_stacksize = 0) |
|
|
1259 | CODE: |
|
|
1260 | RETVAL = coro_stacksize; |
|
|
1261 | if (new_stacksize) |
|
|
1262 | coro_stacksize = new_stacksize; |
|
|
1263 | OUTPUT: |
|
|
1264 | RETVAL |
|
|
1265 | |
|
|
1266 | int |
1086 | cctx_count () |
1267 | cctx_count () |
1087 | CODE: |
1268 | CODE: |
1088 | RETVAL = cctx_count; |
1269 | RETVAL = cctx_count; |
1089 | OUTPUT: |
1270 | OUTPUT: |
1090 | RETVAL |
1271 | RETVAL |
… | |
… | |
1109 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1290 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1110 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1291 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1111 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1292 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1112 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1293 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1113 | |
1294 | |
1114 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1295 | coro_current = get_sv ("Coro::current", FALSE); |
1115 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1296 | SvREADONLY_on (coro_current); |
1116 | |
1297 | |
1117 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1298 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1118 | coro_ready[i] = newAV (); |
1299 | coro_ready[i] = newAV (); |
1119 | |
1300 | |
1120 | { |
1301 | { |
1121 | SV *sv = perl_get_sv("Coro::API", 1); |
1302 | SV *sv = perl_get_sv("Coro::API", 1); |
1122 | |
1303 | |
1123 | coroapi.schedule = api_schedule; |
1304 | coroapi.schedule = api_schedule; |
|
|
1305 | coroapi.save = api_save; |
1124 | coroapi.cede = api_cede; |
1306 | coroapi.cede = api_cede; |
|
|
1307 | coroapi.cede_notself = api_cede_notself; |
1125 | coroapi.ready = api_ready; |
1308 | coroapi.ready = api_ready; |
|
|
1309 | coroapi.is_ready = api_is_ready; |
1126 | coroapi.nready = &coro_nready; |
1310 | coroapi.nready = &coro_nready; |
1127 | coroapi.current = coro_current; |
1311 | coroapi.current = coro_current; |
1128 | |
1312 | |
1129 | GCoroAPI = &coroapi; |
1313 | GCoroAPI = &coroapi; |
1130 | sv_setiv (sv, (IV)&coroapi); |
1314 | sv_setiv (sv, (IV)&coroapi); |
1131 | SvREADONLY_on (sv); |
1315 | SvREADONLY_on (sv); |
1132 | } |
1316 | } |
1133 | } |
1317 | } |
|
|
1318 | |
|
|
1319 | void |
|
|
1320 | _set_current (SV *current) |
|
|
1321 | PROTOTYPE: $ |
|
|
1322 | CODE: |
|
|
1323 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
1324 | SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1134 | |
1325 | |
1135 | int |
1326 | int |
1136 | prio (Coro::State coro, int newprio = 0) |
1327 | prio (Coro::State coro, int newprio = 0) |
1137 | ALIAS: |
1328 | ALIAS: |
1138 | nice = 1 |
1329 | nice = 1 |
… | |
… | |
1141 | RETVAL = coro->prio; |
1332 | RETVAL = coro->prio; |
1142 | |
1333 | |
1143 | if (items > 1) |
1334 | if (items > 1) |
1144 | { |
1335 | { |
1145 | if (ix) |
1336 | if (ix) |
1146 | newprio += coro->prio; |
1337 | newprio = coro->prio - newprio; |
1147 | |
1338 | |
1148 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1339 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1149 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1340 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1150 | |
1341 | |
1151 | coro->prio = newprio; |
1342 | coro->prio = newprio; |
1152 | } |
1343 | } |
1153 | } |
1344 | } |
|
|
1345 | OUTPUT: |
|
|
1346 | RETVAL |
1154 | |
1347 | |
1155 | void |
1348 | SV * |
1156 | ready (SV *self) |
1349 | ready (SV *self) |
1157 | PROTOTYPE: $ |
1350 | PROTOTYPE: $ |
1158 | CODE: |
1351 | CODE: |
1159 | api_ready (self); |
1352 | RETVAL = boolSV (api_ready (self)); |
|
|
1353 | OUTPUT: |
|
|
1354 | RETVAL |
|
|
1355 | |
|
|
1356 | SV * |
|
|
1357 | is_ready (SV *self) |
|
|
1358 | PROTOTYPE: $ |
|
|
1359 | CODE: |
|
|
1360 | RETVAL = boolSV (api_is_ready (self)); |
|
|
1361 | OUTPUT: |
|
|
1362 | RETVAL |
1160 | |
1363 | |
1161 | int |
1364 | int |
1162 | nready (...) |
1365 | nready (...) |
1163 | PROTOTYPE: |
1366 | PROTOTYPE: |
1164 | CODE: |
1367 | CODE: |
… | |
… | |
1170 | |
1373 | |
1171 | SV * |
1374 | SV * |
1172 | _get_state () |
1375 | _get_state () |
1173 | CODE: |
1376 | CODE: |
1174 | { |
1377 | { |
1175 | struct { |
1378 | struct io_state *data; |
1176 | int errorno; |
|
|
1177 | int laststype; |
|
|
1178 | int laststatval; |
|
|
1179 | Stat_t statcache; |
|
|
1180 | } data; |
|
|
1181 | |
1379 | |
|
|
1380 | RETVAL = newSV (sizeof (struct io_state)); |
|
|
1381 | data = (struct io_state *)SvPVX (RETVAL); |
|
|
1382 | SvCUR_set (RETVAL, sizeof (struct io_state)); |
|
|
1383 | SvPOK_only (RETVAL); |
|
|
1384 | |
1182 | data.errorno = errno; |
1385 | data->errorno = errno; |
1183 | data.laststype = PL_laststype; |
1386 | data->laststype = PL_laststype; |
1184 | data.laststatval = PL_laststatval; |
1387 | data->laststatval = PL_laststatval; |
1185 | data.statcache = PL_statcache; |
1388 | data->statcache = PL_statcache; |
1186 | |
|
|
1187 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1188 | } |
1389 | } |
1189 | OUTPUT: |
1390 | OUTPUT: |
1190 | RETVAL |
1391 | RETVAL |
1191 | |
1392 | |
1192 | void |
1393 | void |
1193 | _set_state (char *data_) |
1394 | _set_state (char *data_) |
1194 | PROTOTYPE: $ |
1395 | PROTOTYPE: $ |
1195 | CODE: |
1396 | CODE: |
1196 | { |
1397 | { |
1197 | struct { |
1398 | struct io_state *data = (void *)data_; |
1198 | int errorno; |
|
|
1199 | int laststype; |
|
|
1200 | int laststatval; |
|
|
1201 | Stat_t statcache; |
|
|
1202 | } *data = (void *)data_; |
|
|
1203 | |
1399 | |
1204 | errno = data->errorno; |
1400 | errno = data->errorno; |
1205 | PL_laststype = data->laststype; |
1401 | PL_laststype = data->laststype; |
1206 | PL_laststatval = data->laststatval; |
1402 | PL_laststatval = data->laststatval; |
1207 | PL_statcache = data->statcache; |
1403 | PL_statcache = data->statcache; |
1208 | } |
1404 | } |
|
|
1405 | |