1 | #include "libcoro/coro.c" |
1 | #include "libcoro/coro.c" |
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2 | |
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3 | #define PERL_NO_GET_CONTEXT |
2 | |
4 | |
3 | #include "EXTERN.h" |
5 | #include "EXTERN.h" |
4 | #include "perl.h" |
6 | #include "perl.h" |
5 | #include "XSUB.h" |
7 | #include "XSUB.h" |
6 | |
8 | |
7 | #include "patchlevel.h" |
9 | #include "patchlevel.h" |
8 | |
10 | |
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> |
11 | #include <stdio.h> |
41 | #include <errno.h> |
12 | #include <errno.h> |
42 | |
13 | #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 | |
14 | |
51 | #ifdef HAVE_MMAP |
15 | #ifdef HAVE_MMAP |
52 | # include <unistd.h> |
16 | # include <unistd.h> |
53 | # include <sys/mman.h> |
17 | # include <sys/mman.h> |
54 | # ifndef MAP_ANONYMOUS |
18 | # ifndef MAP_ANONYMOUS |
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69 | #else |
33 | #else |
70 | # define PAGESIZE 0 |
34 | # define PAGESIZE 0 |
71 | # define BOOT_PAGESIZE (void)0 |
35 | # define BOOT_PAGESIZE (void)0 |
72 | #endif |
36 | #endif |
73 | |
37 | |
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38 | #if CORO_USE_VALGRIND |
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39 | # include <valgrind/valgrind.h> |
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40 | # define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end)) |
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41 | #else |
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42 | # define REGISTER_STACK(cctx,start,end) |
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43 | #endif |
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44 | |
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45 | /* the maximum number of idle cctx that will be pooled */ |
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46 | #define MAX_IDLE_CCTX 8 |
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47 | |
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48 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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49 | (PERL_REVISION > (a) \ |
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50 | || (PERL_REVISION == (a) \ |
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51 | && (PERL_VERSION > (b) \ |
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52 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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53 | |
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54 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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55 | # ifndef PL_ppaddr |
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56 | # define PL_ppaddr ppaddr |
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57 | # endif |
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58 | # ifndef call_sv |
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59 | # define call_sv perl_call_sv |
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60 | # endif |
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61 | # ifndef get_sv |
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62 | # define get_sv perl_get_sv |
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63 | # endif |
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64 | # ifndef get_cv |
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65 | # define get_cv perl_get_cv |
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66 | # endif |
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67 | # ifndef IS_PADGV |
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68 | # define IS_PADGV(v) 0 |
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69 | # endif |
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70 | # ifndef IS_PADCONST |
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71 | # define IS_PADCONST(v) 0 |
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72 | # endif |
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73 | #endif |
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74 | |
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75 | /* 5.8.7 */ |
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76 | #ifndef SvRV_set |
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77 | # define SvRV_set(s,v) SvRV(s) = (v) |
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78 | #endif |
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79 | |
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80 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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81 | # undef CORO_STACKGUARD |
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82 | #endif |
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83 | |
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84 | #ifndef CORO_STACKGUARD |
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85 | # define CORO_STACKGUARD 0 |
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86 | #endif |
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87 | |
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88 | /* prefer perl internal functions over our own? */ |
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89 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
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90 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
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91 | #endif |
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92 | |
74 | /* The next macro should declare a variable stacklevel that contains and approximation |
93 | /* 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 |
94 | * to the current C stack pointer. Its property is that it changes with each call |
76 | * and should be unique. */ |
95 | * and should be unique. */ |
77 | #define dSTACKLEVEL int stacklevel |
96 | #define dSTACKLEVEL int stacklevel |
78 | #define STACKLEVEL ((void *)&stacklevel) |
97 | #define STACKLEVEL ((void *)&stacklevel) |
79 | |
98 | |
80 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
99 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
81 | |
100 | |
82 | #if __GNUC__ >= 3 |
101 | #if __GNUC__ >= 3 |
83 | # define attribute(x) __attribute__(x) |
102 | # define attribute(x) __attribute__(x) |
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103 | # define BARRIER __asm__ __volatile__ ("" : : : "memory") |
84 | #else |
104 | #else |
85 | # define attribute(x) |
105 | # define attribute(x) |
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106 | # define BARRIER |
86 | #endif |
107 | #endif |
87 | |
108 | |
88 | #define NOINLINE attribute ((noinline)) |
109 | #define NOINLINE attribute ((noinline)) |
89 | |
110 | |
90 | #include "CoroAPI.h" |
111 | #include "CoroAPI.h" |
91 | |
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92 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
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93 | |
112 | |
94 | #ifdef USE_ITHREADS |
113 | #ifdef USE_ITHREADS |
95 | static perl_mutex coro_mutex; |
114 | static perl_mutex coro_mutex; |
96 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
115 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
97 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
116 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
98 | #else |
117 | #else |
99 | # define LOCK (void)0 |
118 | # define LOCK (void)0 |
100 | # define UNLOCK (void)0 |
119 | # define UNLOCK (void)0 |
101 | #endif |
120 | #endif |
102 | |
121 | |
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122 | /* helper storage struct for Coro::AIO */ |
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123 | struct io_state |
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124 | { |
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125 | int errorno; |
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126 | I32 laststype; |
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127 | int laststatval; |
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128 | Stat_t statcache; |
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129 | }; |
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130 | |
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131 | static size_t coro_stacksize = CORO_STACKSIZE; |
103 | static struct CoroAPI coroapi; |
132 | static struct CoroAPI coroapi; |
104 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
133 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
105 | static HV *coro_state_stash, *coro_stash; |
134 | static HV *coro_state_stash, *coro_stash; |
106 | static SV *coro_mortal; /* will be freed after next transfer */ |
135 | static SV *coro_mortal; /* will be freed after next transfer */ |
107 | |
136 | |
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112 | typedef struct coro_cctx { |
141 | typedef struct coro_cctx { |
113 | struct coro_cctx *next; |
142 | struct coro_cctx *next; |
114 | |
143 | |
115 | /* the stack */ |
144 | /* the stack */ |
116 | void *sptr; |
145 | void *sptr; |
117 | long ssize; /* positive == mmap, otherwise malloc */ |
146 | size_t ssize; |
118 | |
147 | |
119 | /* cpu state */ |
148 | /* cpu state */ |
120 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
149 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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150 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
121 | JMPENV *top_env; |
151 | JMPENV *top_env; |
122 | coro_context cctx; |
152 | coro_context cctx; |
123 | |
153 | |
124 | int inuse; |
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125 | |
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126 | #if USE_VALGRIND |
154 | #if CORO_USE_VALGRIND |
127 | int valgrind_id; |
155 | int valgrind_id; |
128 | #endif |
156 | #endif |
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157 | char inuse, mapped; |
129 | } coro_cctx; |
158 | } coro_cctx; |
130 | |
159 | |
131 | enum { |
160 | enum { |
132 | CF_RUNNING, /* coroutine is running */ |
161 | CF_RUNNING = 0x0001, /* coroutine is running */ |
133 | CF_READY, /* coroutine is ready */ |
162 | CF_READY = 0x0002, /* coroutine is ready */ |
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163 | CF_NEW = 0x0004, /* has never been switched to */ |
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164 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
134 | }; |
165 | }; |
135 | |
166 | |
136 | /* this is a structure representing a perl-level coroutine */ |
167 | /* this is a structure representing a perl-level coroutine */ |
137 | struct coro { |
168 | struct coro { |
138 | /* the c coroutine allocated to this perl coroutine, if any */ |
169 | /* the c coroutine allocated to this perl coroutine, if any */ |
139 | coro_cctx *cctx; |
170 | coro_cctx *cctx; |
140 | |
171 | |
141 | /* data associated with this coroutine (initial args) */ |
172 | /* data associated with this coroutine (initial args) */ |
142 | AV *args; |
173 | AV *args; |
143 | int refcnt; |
174 | int refcnt; |
144 | int flags; |
175 | int save; /* CORO_SAVE flags */ |
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176 | int flags; /* CF_ flags */ |
145 | |
177 | |
146 | /* optionally saved, might be zero */ |
178 | /* optionally saved, might be zero */ |
147 | AV *defav; |
179 | AV *defav; /* @_ */ |
148 | SV *defsv; |
180 | SV *defsv; /* $_ */ |
149 | SV *errsv; |
181 | SV *errsv; /* $@ */ |
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182 | GV *deffh; /* default filehandle */ |
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183 | SV *irssv; /* $/ */ |
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184 | SV *irssv_sv; /* real $/ cache */ |
150 | |
185 | |
151 | #define VAR(name,type) type name; |
186 | #define VAR(name,type) type name; |
152 | # include "state.h" |
187 | # include "state.h" |
153 | #undef VAR |
188 | #undef VAR |
154 | |
189 | |
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157 | }; |
192 | }; |
158 | |
193 | |
159 | typedef struct coro *Coro__State; |
194 | typedef struct coro *Coro__State; |
160 | typedef struct coro *Coro__State_or_hashref; |
195 | typedef struct coro *Coro__State_or_hashref; |
161 | |
196 | |
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197 | /** Coro ********************************************************************/ |
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198 | |
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199 | #define PRIO_MAX 3 |
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200 | #define PRIO_HIGH 1 |
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201 | #define PRIO_NORMAL 0 |
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202 | #define PRIO_LOW -1 |
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203 | #define PRIO_IDLE -3 |
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204 | #define PRIO_MIN -4 |
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205 | |
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206 | /* for Coro.pm */ |
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207 | static SV *coro_current; |
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208 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
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209 | static int coro_nready; |
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210 | |
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211 | /** lowlevel stuff **********************************************************/ |
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212 | |
162 | static AV * |
213 | static AV * |
163 | coro_clone_padlist (CV *cv) |
214 | coro_clone_padlist (pTHX_ CV *cv) |
164 | { |
215 | { |
165 | AV *padlist = CvPADLIST (cv); |
216 | AV *padlist = CvPADLIST (cv); |
166 | AV *newpadlist, *newpad; |
217 | AV *newpadlist, *newpad; |
167 | |
218 | |
168 | newpadlist = newAV (); |
219 | newpadlist = newAV (); |
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180 | |
231 | |
181 | return newpadlist; |
232 | return newpadlist; |
182 | } |
233 | } |
183 | |
234 | |
184 | static void |
235 | static void |
185 | free_padlist (AV *padlist) |
236 | free_padlist (pTHX_ AV *padlist) |
186 | { |
237 | { |
187 | /* may be during global destruction */ |
238 | /* may be during global destruction */ |
188 | if (SvREFCNT (padlist)) |
239 | if (SvREFCNT (padlist)) |
189 | { |
240 | { |
190 | I32 i = AvFILLp (padlist); |
241 | I32 i = AvFILLp (padlist); |
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211 | AV *padlist; |
262 | AV *padlist; |
212 | AV *av = (AV *)mg->mg_obj; |
263 | AV *av = (AV *)mg->mg_obj; |
213 | |
264 | |
214 | /* casting is fun. */ |
265 | /* casting is fun. */ |
215 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
266 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
216 | free_padlist (padlist); |
267 | free_padlist (aTHX_ padlist); |
217 | |
268 | |
218 | SvREFCNT_dec (av); |
269 | SvREFCNT_dec (av); |
219 | |
270 | |
220 | return 0; |
271 | return 0; |
221 | } |
272 | } |
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231 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
282 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
232 | : 0 |
283 | : 0 |
233 | |
284 | |
234 | /* the next two functions merely cache the padlists */ |
285 | /* the next two functions merely cache the padlists */ |
235 | static void |
286 | static void |
236 | get_padlist (CV *cv) |
287 | get_padlist (pTHX_ CV *cv) |
237 | { |
288 | { |
238 | MAGIC *mg = CORO_MAGIC (cv); |
289 | MAGIC *mg = CORO_MAGIC (cv); |
239 | AV *av; |
290 | AV *av; |
240 | |
291 | |
241 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
292 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
242 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
293 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
243 | else |
294 | else |
244 | { |
295 | { |
245 | #if 0 |
296 | #if CORO_PREFER_PERL_FUNCTIONS |
246 | /* this is probably cleaner, but also slower? */ |
297 | /* this is probably cleaner, but also slower? */ |
247 | CV *cp = Perl_cv_clone (cv); |
298 | CV *cp = Perl_cv_clone (cv); |
248 | CvPADLIST (cv) = CvPADLIST (cp); |
299 | CvPADLIST (cv) = CvPADLIST (cp); |
249 | CvPADLIST (cp) = 0; |
300 | CvPADLIST (cp) = 0; |
250 | SvREFCNT_dec (cp); |
301 | SvREFCNT_dec (cp); |
251 | #else |
302 | #else |
252 | CvPADLIST (cv) = coro_clone_padlist (cv); |
303 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
253 | #endif |
304 | #endif |
254 | } |
305 | } |
255 | } |
306 | } |
256 | |
307 | |
257 | static void |
308 | static void |
258 | put_padlist (CV *cv) |
309 | put_padlist (pTHX_ CV *cv) |
259 | { |
310 | { |
260 | MAGIC *mg = CORO_MAGIC (cv); |
311 | MAGIC *mg = CORO_MAGIC (cv); |
261 | AV *av; |
312 | AV *av; |
262 | |
313 | |
263 | if (!mg) |
314 | if (!mg) |
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274 | av_extend (av, AvMAX (av) + 1); |
325 | av_extend (av, AvMAX (av) + 1); |
275 | |
326 | |
276 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
327 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
277 | } |
328 | } |
278 | |
329 | |
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330 | /** load & save, init *******************************************************/ |
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331 | |
279 | #define SB do { |
332 | #define SB do { |
280 | #define SE } while (0) |
333 | #define SE } while (0) |
281 | |
334 | |
282 | #define LOAD(state) load_state((state)); |
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283 | #define SAVE(state,flags) save_state((state),(flags)); |
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284 | |
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285 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
335 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
286 | |
336 | |
287 | static void |
337 | static void |
288 | load_state(Coro__State c) |
338 | load_perl (pTHX_ Coro__State c) |
289 | { |
339 | { |
290 | #define VAR(name,type) PL_ ## name = c->name; |
340 | #define VAR(name,type) PL_ ## name = c->name; |
291 | # include "state.h" |
341 | # include "state.h" |
292 | #undef VAR |
342 | #undef VAR |
293 | |
343 | |
294 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
344 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
295 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
345 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
296 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
346 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
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347 | if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh); |
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348 | |
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349 | if (c->irssv) |
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350 | { |
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351 | if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
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352 | { |
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353 | SvREFCNT_dec (c->irssv); |
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354 | c->irssv = 0; |
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355 | } |
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356 | else |
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357 | { |
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358 | REPLACE_SV (PL_rs, c->irssv); |
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359 | if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
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360 | sv_setsv (c->irssv_sv, PL_rs); |
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361 | } |
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362 | } |
297 | |
363 | |
298 | { |
364 | { |
299 | dSP; |
365 | dSP; |
300 | CV *cv; |
366 | CV *cv; |
301 | |
367 | |
302 | /* now do the ugly restore mess */ |
368 | /* now do the ugly restore mess */ |
303 | while ((cv = (CV *)POPs)) |
369 | while ((cv = (CV *)POPs)) |
304 | { |
370 | { |
305 | put_padlist (cv); /* mark this padlist as available */ |
371 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
306 | CvDEPTH (cv) = PTR2IV (POPs); |
372 | CvDEPTH (cv) = PTR2IV (POPs); |
307 | CvPADLIST (cv) = (AV *)POPs; |
373 | CvPADLIST (cv) = (AV *)POPs; |
308 | } |
374 | } |
309 | |
375 | |
310 | PUTBACK; |
376 | PUTBACK; |
311 | } |
377 | } |
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378 | assert (!PL_comppad || AvARRAY (PL_comppad));//D |
312 | } |
379 | } |
313 | |
380 | |
314 | static void |
381 | static void |
315 | save_state(Coro__State c, int flags) |
382 | save_perl (pTHX_ Coro__State c) |
316 | { |
383 | { |
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384 | assert (!PL_comppad || AvARRAY (PL_comppad));//D |
317 | { |
385 | { |
318 | dSP; |
386 | dSP; |
319 | I32 cxix = cxstack_ix; |
387 | I32 cxix = cxstack_ix; |
320 | PERL_CONTEXT *ccstk = cxstack; |
388 | PERL_CONTEXT *ccstk = cxstack; |
321 | PERL_SI *top_si = PL_curstackinfo; |
389 | PERL_SI *top_si = PL_curstackinfo; |
… | |
… | |
323 | /* |
391 | /* |
324 | * the worst thing you can imagine happens first - we have to save |
392 | * the worst thing you can imagine happens first - we have to save |
325 | * (and reinitialize) all cv's in the whole callchain :( |
393 | * (and reinitialize) all cv's in the whole callchain :( |
326 | */ |
394 | */ |
327 | |
395 | |
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396 | EXTEND (SP, 3 + 1); |
328 | PUSHs (Nullsv); |
397 | PUSHs (Nullsv); |
329 | /* this loop was inspired by pp_caller */ |
398 | /* this loop was inspired by pp_caller */ |
330 | for (;;) |
399 | for (;;) |
331 | { |
400 | { |
332 | while (cxix >= 0) |
401 | while (cxix >= 0) |
333 | { |
402 | { |
334 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
403 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
335 | |
404 | |
336 | if (CxTYPE(cx) == CXt_SUB) |
405 | if (CxTYPE (cx) == CXt_SUB) |
337 | { |
406 | { |
338 | CV *cv = cx->blk_sub.cv; |
407 | CV *cv = cx->blk_sub.cv; |
339 | |
408 | |
340 | if (CvDEPTH (cv)) |
409 | if (CvDEPTH (cv)) |
341 | { |
410 | { |
342 | EXTEND (SP, 3); |
411 | EXTEND (SP, 3); |
343 | |
|
|
344 | PUSHs ((SV *)CvPADLIST(cv)); |
412 | PUSHs ((SV *)CvPADLIST (cv)); |
345 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
413 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
346 | PUSHs ((SV *)cv); |
414 | PUSHs ((SV *)cv); |
347 | |
415 | |
348 | CvDEPTH (cv) = 0; |
416 | CvDEPTH (cv) = 0; |
349 | get_padlist (cv); |
417 | get_padlist (aTHX_ cv); |
350 | } |
418 | } |
351 | } |
419 | } |
352 | #ifdef CXt_FORMAT |
|
|
353 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
354 | { |
|
|
355 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
356 | /* my bold guess is as a simple, plain sub... */ |
|
|
357 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
358 | } |
|
|
359 | #endif |
|
|
360 | } |
420 | } |
361 | |
421 | |
362 | if (top_si->si_type == PERLSI_MAIN) |
422 | if (top_si->si_type == PERLSI_MAIN) |
363 | break; |
423 | break; |
364 | |
424 | |
… | |
… | |
368 | } |
428 | } |
369 | |
429 | |
370 | PUTBACK; |
430 | PUTBACK; |
371 | } |
431 | } |
372 | |
432 | |
373 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
433 | c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
374 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
434 | c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
375 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
435 | c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
|
|
436 | c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; |
|
|
437 | c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
376 | |
438 | |
377 | #define VAR(name,type)c->name = PL_ ## name; |
439 | #define VAR(name,type)c->name = PL_ ## name; |
378 | # include "state.h" |
440 | # include "state.h" |
379 | #undef VAR |
441 | #undef VAR |
380 | } |
442 | } |
… | |
… | |
383 | * allocate various perl stacks. This is an exact copy |
445 | * allocate various perl stacks. This is an exact copy |
384 | * of perl.c:init_stacks, except that it uses less memory |
446 | * of perl.c:init_stacks, except that it uses less memory |
385 | * on the (sometimes correct) assumption that coroutines do |
447 | * on the (sometimes correct) assumption that coroutines do |
386 | * not usually need a lot of stackspace. |
448 | * not usually need a lot of stackspace. |
387 | */ |
449 | */ |
|
|
450 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
451 | # define coro_init_stacks init_stacks |
|
|
452 | #else |
388 | static void |
453 | static void |
389 | coro_init_stacks () |
454 | coro_init_stacks (pTHX) |
390 | { |
455 | { |
391 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
456 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
392 | PL_curstackinfo->si_type = PERLSI_MAIN; |
457 | PL_curstackinfo->si_type = PERLSI_MAIN; |
393 | PL_curstack = PL_curstackinfo->si_stack; |
458 | PL_curstack = PL_curstackinfo->si_stack; |
394 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
459 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
395 | |
460 | |
396 | PL_stack_base = AvARRAY(PL_curstack); |
461 | PL_stack_base = AvARRAY(PL_curstack); |
397 | PL_stack_sp = PL_stack_base; |
462 | PL_stack_sp = PL_stack_base; |
398 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
463 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
399 | |
464 | |
400 | New(50,PL_tmps_stack,96,SV*); |
465 | New(50,PL_tmps_stack,128,SV*); |
401 | PL_tmps_floor = -1; |
466 | PL_tmps_floor = -1; |
402 | PL_tmps_ix = -1; |
467 | PL_tmps_ix = -1; |
403 | PL_tmps_max = 96; |
468 | PL_tmps_max = 128; |
404 | |
469 | |
405 | New(54,PL_markstack,16,I32); |
470 | New(54,PL_markstack,32,I32); |
406 | PL_markstack_ptr = PL_markstack; |
471 | PL_markstack_ptr = PL_markstack; |
407 | PL_markstack_max = PL_markstack + 16; |
472 | PL_markstack_max = PL_markstack + 32; |
408 | |
473 | |
409 | #ifdef SET_MARK_OFFSET |
474 | #ifdef SET_MARK_OFFSET |
410 | SET_MARK_OFFSET; |
475 | SET_MARK_OFFSET; |
411 | #endif |
476 | #endif |
412 | |
477 | |
413 | New(54,PL_scopestack,16,I32); |
478 | New(54,PL_scopestack,32,I32); |
414 | PL_scopestack_ix = 0; |
479 | PL_scopestack_ix = 0; |
415 | PL_scopestack_max = 16; |
480 | PL_scopestack_max = 32; |
416 | |
481 | |
417 | New(54,PL_savestack,96,ANY); |
482 | New(54,PL_savestack,64,ANY); |
418 | PL_savestack_ix = 0; |
483 | PL_savestack_ix = 0; |
419 | PL_savestack_max = 96; |
484 | PL_savestack_max = 64; |
420 | |
485 | |
421 | #if !PERL_VERSION_ATLEAST (5,9,0) |
486 | #if !PERL_VERSION_ATLEAST (5,9,0) |
422 | New(54,PL_retstack,8,OP*); |
487 | New(54,PL_retstack,16,OP*); |
423 | PL_retstack_ix = 0; |
488 | PL_retstack_ix = 0; |
424 | PL_retstack_max = 8; |
489 | PL_retstack_max = 16; |
425 | #endif |
490 | #endif |
426 | } |
491 | } |
|
|
492 | #endif |
427 | |
493 | |
428 | /* |
494 | /* |
429 | * destroy the stacks, the callchain etc... |
495 | * destroy the stacks, the callchain etc... |
430 | */ |
496 | */ |
431 | static void |
497 | static void |
432 | coro_destroy_stacks () |
498 | coro_destroy_stacks (pTHX) |
433 | { |
499 | { |
434 | if (!IN_DESTRUCT) |
500 | if (!IN_DESTRUCT) |
435 | { |
501 | { |
436 | /* is this ugly, I ask? */ |
502 | /* restore all saved variables and stuff */ |
437 | LEAVE_SCOPE (0); |
503 | LEAVE_SCOPE (0); |
|
|
504 | assert (PL_tmps_floor == -1); |
438 | |
505 | |
439 | /* sure it is, but more important: is it correct?? :/ */ |
506 | /* free all temporaries */ |
440 | FREETMPS; |
507 | FREETMPS; |
|
|
508 | assert (PL_tmps_ix == -1); |
441 | |
509 | |
|
|
510 | /* unwind all extra stacks */ |
442 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
511 | POPSTACK_TO (PL_mainstack); |
|
|
512 | |
|
|
513 | /* unwind main stack */ |
|
|
514 | dounwind (-1); |
443 | } |
515 | } |
444 | |
516 | |
445 | while (PL_curstackinfo->si_next) |
517 | while (PL_curstackinfo->si_next) |
446 | PL_curstackinfo = PL_curstackinfo->si_next; |
518 | PL_curstackinfo = PL_curstackinfo->si_next; |
447 | |
519 | |
448 | while (PL_curstackinfo) |
520 | while (PL_curstackinfo) |
449 | { |
521 | { |
450 | PERL_SI *p = PL_curstackinfo->si_prev; |
522 | PERL_SI *p = PL_curstackinfo->si_prev; |
451 | |
523 | |
452 | { /*D*//*remove*/ |
|
|
453 | dSP; |
|
|
454 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
455 | PUTBACK; /* possibly superfluous */ |
|
|
456 | } |
|
|
457 | |
|
|
458 | if (!IN_DESTRUCT) |
524 | if (!IN_DESTRUCT) |
459 | { |
|
|
460 | dounwind (-1);/*D*//*remove*/ |
|
|
461 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
525 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
462 | } |
|
|
463 | |
526 | |
464 | Safefree (PL_curstackinfo->si_cxstack); |
527 | Safefree (PL_curstackinfo->si_cxstack); |
465 | Safefree (PL_curstackinfo); |
528 | Safefree (PL_curstackinfo); |
466 | PL_curstackinfo = p; |
529 | PL_curstackinfo = p; |
467 | } |
530 | } |
… | |
… | |
473 | #if !PERL_VERSION_ATLEAST (5,9,0) |
536 | #if !PERL_VERSION_ATLEAST (5,9,0) |
474 | Safefree (PL_retstack); |
537 | Safefree (PL_retstack); |
475 | #endif |
538 | #endif |
476 | } |
539 | } |
477 | |
540 | |
|
|
541 | /** coroutine stack handling ************************************************/ |
|
|
542 | |
478 | static void |
543 | static void |
479 | setup_coro (struct coro *coro) |
544 | setup_coro (pTHX_ struct coro *coro) |
480 | { |
545 | { |
481 | /* |
546 | /* |
482 | * emulate part of the perl startup here. |
547 | * emulate part of the perl startup here. |
483 | */ |
548 | */ |
484 | |
|
|
485 | coro_init_stacks (); |
549 | coro_init_stacks (aTHX); |
486 | |
550 | |
|
|
551 | PL_curcop = &PL_compiling; |
|
|
552 | PL_in_eval = EVAL_NULL; |
487 | PL_curcop = 0; |
553 | PL_comppad = 0; |
488 | PL_in_eval = 0; |
|
|
489 | PL_curpm = 0; |
554 | PL_curpm = 0; |
|
|
555 | PL_localizing = 0; |
|
|
556 | PL_dirty = 0; |
|
|
557 | PL_restartop = 0; |
490 | |
558 | |
491 | { |
559 | { |
492 | dSP; |
560 | dSP; |
493 | LOGOP myop; |
561 | LOGOP myop; |
494 | |
562 | |
495 | /* I have no idea why this is needed, but it is */ |
|
|
496 | PUSHMARK (SP); |
|
|
497 | |
|
|
498 | SvREFCNT_dec (GvAV (PL_defgv)); |
563 | SvREFCNT_dec (GvAV (PL_defgv)); |
499 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
564 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
500 | |
565 | |
501 | Zero (&myop, 1, LOGOP); |
566 | Zero (&myop, 1, LOGOP); |
502 | myop.op_next = Nullop; |
567 | myop.op_next = Nullop; |
503 | myop.op_flags = OPf_WANT_VOID; |
568 | myop.op_flags = OPf_WANT_VOID; |
504 | |
569 | |
505 | PL_op = (OP *)&myop; |
|
|
506 | |
|
|
507 | PUSHMARK (SP); |
570 | PUSHMARK (SP); |
508 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
571 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
509 | PUTBACK; |
572 | PUTBACK; |
|
|
573 | PL_op = (OP *)&myop; |
510 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
574 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
511 | SPAGAIN; |
575 | SPAGAIN; |
512 | |
|
|
513 | ENTER; /* necessary e.g. for dounwind */ |
|
|
514 | } |
576 | } |
515 | } |
|
|
516 | |
577 | |
|
|
578 | ENTER; /* necessary e.g. for dounwind */ |
|
|
579 | } |
|
|
580 | |
517 | static void |
581 | static void |
518 | free_coro_mortal () |
582 | free_coro_mortal (pTHX) |
519 | { |
583 | { |
520 | if (coro_mortal) |
584 | if (coro_mortal) |
521 | { |
585 | { |
522 | SvREFCNT_dec (coro_mortal); |
586 | SvREFCNT_dec (coro_mortal); |
523 | coro_mortal = 0; |
587 | coro_mortal = 0; |
524 | } |
588 | } |
525 | } |
589 | } |
526 | |
590 | |
|
|
591 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
527 | static void NOINLINE |
592 | static void NOINLINE |
528 | prepare_cctx (coro_cctx *cctx) |
593 | prepare_cctx (pTHX_ coro_cctx *cctx) |
529 | { |
594 | { |
530 | dSP; |
595 | dSP; |
531 | LOGOP myop; |
596 | LOGOP myop; |
532 | |
597 | |
533 | Zero (&myop, 1, LOGOP); |
598 | Zero (&myop, 1, LOGOP); |
534 | myop.op_next = PL_op; |
599 | myop.op_next = PL_op; |
535 | myop.op_flags = OPf_WANT_VOID; |
600 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
536 | |
|
|
537 | sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx)); |
|
|
538 | |
601 | |
539 | PUSHMARK (SP); |
602 | PUSHMARK (SP); |
|
|
603 | EXTEND (SP, 2); |
|
|
604 | PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
540 | XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
605 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
541 | PUTBACK; |
606 | PUTBACK; |
|
|
607 | PL_op = (OP *)&myop; |
542 | PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); |
608 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
543 | SPAGAIN; |
609 | SPAGAIN; |
544 | } |
610 | } |
545 | |
611 | |
546 | static void |
612 | static void |
547 | coro_run (void *arg) |
613 | coro_run (void *arg) |
548 | { |
614 | { |
|
|
615 | dTHX; |
|
|
616 | |
549 | /* coro_run is the alternative epilogue of transfer() */ |
617 | /* coro_run is the alternative tail of transfer(), so unlock here. */ |
550 | UNLOCK; |
618 | UNLOCK; |
551 | |
619 | |
552 | /* |
620 | /* |
553 | * this is a _very_ stripped down perl interpreter ;) |
621 | * this is a _very_ stripped down perl interpreter ;) |
554 | */ |
622 | */ |
555 | PL_top_env = &PL_start_env; |
623 | PL_top_env = &PL_start_env; |
556 | |
624 | |
557 | /* inject call to cctx_init */ |
625 | /* inject call to cctx_init */ |
558 | prepare_cctx ((coro_cctx *)arg); |
626 | prepare_cctx (aTHX_ (coro_cctx *)arg); |
559 | |
627 | |
560 | /* somebody will hit me for both perl_run and PL_restartop */ |
628 | /* somebody will hit me for both perl_run and PL_restartop */ |
|
|
629 | PL_restartop = PL_op; |
561 | perl_run (PL_curinterp); |
630 | perl_run (PL_curinterp); |
562 | |
631 | |
563 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
632 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
564 | abort (); |
633 | abort (); |
565 | } |
634 | } |
566 | |
635 | |
567 | static coro_cctx * |
636 | static coro_cctx * |
568 | cctx_new () |
637 | cctx_new () |
569 | { |
638 | { |
570 | coro_cctx *cctx; |
639 | coro_cctx *cctx; |
|
|
640 | void *stack_start; |
|
|
641 | size_t stack_size; |
571 | |
642 | |
572 | ++cctx_count; |
643 | ++cctx_count; |
573 | |
644 | |
574 | New (0, cctx, 1, coro_cctx); |
645 | Newz (0, cctx, 1, coro_cctx); |
575 | |
646 | |
576 | #if HAVE_MMAP |
647 | #if HAVE_MMAP |
577 | |
648 | |
578 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
649 | cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
579 | /* mmap suppsedly does allocate-on-write for us */ |
650 | /* mmap supposedly does allocate-on-write for us */ |
580 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
651 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
581 | |
652 | |
582 | if (cctx->sptr == (void *)-1) |
653 | if (cctx->sptr != (void *)-1) |
583 | { |
|
|
584 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
585 | _exit (EXIT_FAILURE); |
|
|
586 | } |
654 | { |
587 | |
|
|
588 | # if STACKGUARD |
655 | # if CORO_STACKGUARD |
589 | mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
656 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
590 | # endif |
657 | # endif |
|
|
658 | stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
|
|
659 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
660 | cctx->mapped = 1; |
|
|
661 | } |
|
|
662 | else |
|
|
663 | #endif |
|
|
664 | { |
|
|
665 | cctx->ssize = coro_stacksize * (long)sizeof (long); |
|
|
666 | New (0, cctx->sptr, coro_stacksize, long); |
591 | |
667 | |
592 | #else |
|
|
593 | |
|
|
594 | cctx->ssize = STACKSIZE * (long)sizeof (long); |
|
|
595 | New (0, cctx->sptr, STACKSIZE, long); |
|
|
596 | |
|
|
597 | if (!cctx->sptr) |
668 | if (!cctx->sptr) |
598 | { |
669 | { |
599 | perror ("FATAL: unable to malloc stack for coroutine"); |
670 | perror ("FATAL: unable to allocate stack for coroutine"); |
600 | _exit (EXIT_FAILURE); |
671 | _exit (EXIT_FAILURE); |
601 | } |
672 | } |
602 | |
673 | |
603 | #endif |
674 | stack_start = cctx->sptr; |
|
|
675 | stack_size = cctx->ssize; |
|
|
676 | } |
604 | |
677 | |
605 | #if USE_VALGRIND |
678 | REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
606 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ( |
|
|
607 | STACKGUARD * PAGESIZE + (char *)cctx->sptr, |
|
|
608 | cctx->ssize + (char *)cctx->sptr |
|
|
609 | ); |
|
|
610 | #endif |
|
|
611 | |
|
|
612 | coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize); |
679 | coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); |
613 | |
680 | |
614 | return cctx; |
681 | return cctx; |
615 | } |
682 | } |
616 | |
683 | |
617 | static void |
684 | static void |
618 | cctx_free (coro_cctx *cctx) |
685 | cctx_destroy (coro_cctx *cctx) |
619 | { |
686 | { |
620 | if (!cctx) |
687 | if (!cctx) |
621 | return; |
688 | return; |
622 | |
689 | |
623 | --cctx_count; |
690 | --cctx_count; |
624 | |
691 | |
625 | #if USE_VALGRIND |
692 | #if CORO_USE_VALGRIND |
626 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
693 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
627 | #endif |
694 | #endif |
628 | |
695 | |
629 | #if HAVE_MMAP |
696 | #if HAVE_MMAP |
|
|
697 | if (cctx->mapped) |
630 | munmap (cctx->sptr, cctx->ssize); |
698 | munmap (cctx->sptr, cctx->ssize); |
631 | #else |
699 | else |
|
|
700 | #endif |
632 | Safefree (cctx->sptr); |
701 | Safefree (cctx->sptr); |
633 | #endif |
|
|
634 | |
702 | |
635 | Safefree (cctx); |
703 | Safefree (cctx); |
636 | } |
704 | } |
637 | |
705 | |
638 | static coro_cctx * |
706 | static coro_cctx * |
639 | cctx_get () |
707 | cctx_get (pTHX) |
640 | { |
708 | { |
641 | coro_cctx *cctx; |
|
|
642 | |
|
|
643 | if (cctx_first) |
709 | while (cctx_first) |
644 | { |
710 | { |
|
|
711 | coro_cctx *cctx = cctx_first; |
|
|
712 | cctx_first = cctx->next; |
645 | --cctx_idle; |
713 | --cctx_idle; |
646 | cctx = cctx_first; |
714 | |
647 | cctx_first = cctx->next; |
715 | if (cctx->ssize >= coro_stacksize) |
|
|
716 | return cctx; |
|
|
717 | |
|
|
718 | cctx_destroy (cctx); |
648 | } |
719 | } |
649 | else |
720 | |
650 | { |
|
|
651 | cctx = cctx_new (); |
|
|
652 | PL_op = PL_op->op_next; |
721 | PL_op = PL_op->op_next; |
653 | } |
|
|
654 | |
|
|
655 | return cctx; |
722 | return cctx_new (); |
656 | } |
723 | } |
657 | |
724 | |
658 | static void |
725 | static void |
659 | cctx_put (coro_cctx *cctx) |
726 | cctx_put (coro_cctx *cctx) |
660 | { |
727 | { |
|
|
728 | /* free another cctx if overlimit */ |
|
|
729 | if (cctx_idle >= MAX_IDLE_CCTX) |
|
|
730 | { |
|
|
731 | coro_cctx *first = cctx_first; |
|
|
732 | cctx_first = first->next; |
|
|
733 | --cctx_idle; |
|
|
734 | |
|
|
735 | assert (!first->inuse); |
|
|
736 | cctx_destroy (first); |
|
|
737 | } |
|
|
738 | |
661 | ++cctx_idle; |
739 | ++cctx_idle; |
662 | cctx->next = cctx_first; |
740 | cctx->next = cctx_first; |
663 | cctx_first = cctx; |
741 | cctx_first = cctx; |
664 | } |
742 | } |
665 | |
743 | |
|
|
744 | /** coroutine switching *****************************************************/ |
|
|
745 | |
666 | /* never call directly, always through the coro_state_transfer global variable */ |
746 | /* never call directly, always through the coro_state_transfer global variable */ |
667 | static void NOINLINE |
747 | static void NOINLINE |
668 | transfer (struct coro *prev, struct coro *next, int flags) |
748 | transfer (pTHX_ struct coro *prev, struct coro *next) |
669 | { |
749 | { |
670 | dSTACKLEVEL; |
750 | dSTACKLEVEL; |
671 | |
751 | |
672 | /* sometimes transfer is only called to set idle_sp */ |
752 | /* sometimes transfer is only called to set idle_sp */ |
673 | if (flags == TRANSFER_SET_STACKLEVEL) |
753 | if (!next) |
|
|
754 | { |
674 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
755 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
756 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
757 | } |
675 | else if (prev != next) |
758 | else if (prev != next) |
676 | { |
759 | { |
677 | coro_cctx *prev__cctx; |
760 | coro_cctx *prev__cctx; |
678 | |
761 | |
679 | if (!prev->cctx) |
762 | if (prev->flags & CF_NEW) |
680 | { |
763 | { |
681 | /* create a new empty context */ |
764 | /* create a new empty context */ |
682 | Newz (0, prev->cctx, 1, coro_cctx); |
765 | Newz (0, prev->cctx, 1, coro_cctx); |
683 | prev->cctx->inuse = 1; |
766 | prev->cctx->inuse = 1; |
|
|
767 | prev->flags &= ~CF_NEW; |
684 | prev->flags |= CF_RUNNING; |
768 | prev->flags |= CF_RUNNING; |
685 | } |
769 | } |
686 | |
770 | |
|
|
771 | /*TODO: must not croak here */ |
687 | if (!prev->flags & CF_RUNNING) |
772 | if (!prev->flags & CF_RUNNING) |
688 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
773 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
689 | |
774 | |
690 | if (next->flags & CF_RUNNING) |
775 | if (next->flags & CF_RUNNING) |
691 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
776 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
692 | |
777 | |
|
|
778 | if (next->flags & CF_DESTROYED) |
|
|
779 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
|
|
780 | |
693 | prev->flags &= ~CF_RUNNING; |
781 | prev->flags &= ~CF_RUNNING; |
694 | next->flags |= CF_RUNNING; |
782 | next->flags |= CF_RUNNING; |
695 | |
783 | |
696 | LOCK; |
784 | LOCK; |
697 | |
785 | |
698 | if (next->mainstack) |
786 | if (next->flags & CF_NEW) |
699 | { |
787 | { |
700 | /* coroutine already started */ |
788 | /* need to start coroutine */ |
701 | SAVE (prev, flags); |
789 | next->flags &= ~CF_NEW; |
702 | LOAD (next); |
790 | /* first get rid of the old state */ |
|
|
791 | save_perl (aTHX_ prev); |
|
|
792 | /* setup coroutine call */ |
|
|
793 | setup_coro (aTHX_ next); |
|
|
794 | /* need a new stack */ |
|
|
795 | assert (!next->cctx); |
703 | } |
796 | } |
704 | else |
797 | else |
705 | { |
798 | { |
706 | /* need to start coroutine */ |
799 | /* coroutine already started */ |
707 | /* first get rid of the old state */ |
800 | save_perl (aTHX_ prev); |
708 | SAVE (prev, -1); |
801 | load_perl (aTHX_ next); |
709 | /* setup coroutine call */ |
|
|
710 | setup_coro (next); |
|
|
711 | /* need a new stack */ |
|
|
712 | assert (!next->stack); |
|
|
713 | } |
802 | } |
714 | |
803 | |
715 | prev__cctx = prev->cctx; |
804 | prev__cctx = prev->cctx; |
716 | |
805 | |
717 | /* possibly "free" the cctx */ |
806 | /* possibly "free" the cctx */ |
718 | if (prev__cctx->idle_sp == STACKLEVEL) |
807 | if (prev__cctx->idle_sp == STACKLEVEL) |
719 | { |
808 | { |
720 | assert (PL_top_env == prev__cctx->top_env); |
809 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
|
|
810 | assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
|
|
811 | |
|
|
812 | prev->cctx = 0; |
721 | |
813 | |
722 | cctx_put (prev__cctx); |
814 | cctx_put (prev__cctx); |
723 | prev->cctx = 0; |
815 | prev__cctx->inuse = 0; |
724 | } |
816 | } |
725 | |
817 | |
726 | if (!next->cctx) |
818 | if (!next->cctx) |
|
|
819 | { |
727 | next->cctx = cctx_get (); |
820 | next->cctx = cctx_get (aTHX); |
|
|
821 | assert (!next->cctx->inuse); |
|
|
822 | next->cctx->inuse = 1; |
|
|
823 | } |
728 | |
824 | |
729 | if (prev__cctx != next->cctx) |
825 | if (prev__cctx != next->cctx) |
730 | { |
826 | { |
731 | assert ( prev__cctx->inuse); |
|
|
732 | assert (!next->cctx->inuse); |
|
|
733 | |
|
|
734 | prev__cctx->inuse = 0; |
|
|
735 | next->cctx->inuse = 1; |
|
|
736 | |
|
|
737 | prev__cctx->top_env = PL_top_env; |
827 | prev__cctx->top_env = PL_top_env; |
738 | PL_top_env = next->cctx->top_env; |
828 | PL_top_env = next->cctx->top_env; |
739 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
829 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
740 | } |
830 | } |
741 | |
831 | |
742 | free_coro_mortal (); |
832 | free_coro_mortal (aTHX); |
743 | |
|
|
744 | UNLOCK; |
833 | UNLOCK; |
745 | } |
834 | } |
746 | } |
835 | } |
747 | |
836 | |
748 | struct transfer_args |
837 | struct transfer_args |
749 | { |
838 | { |
750 | struct coro *prev, *next; |
839 | struct coro *prev, *next; |
751 | int flags; |
|
|
752 | }; |
840 | }; |
753 | |
841 | |
754 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
842 | #define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) |
755 | |
843 | |
|
|
844 | /** high level stuff ********************************************************/ |
|
|
845 | |
756 | static void |
846 | static int |
757 | coro_state_destroy (struct coro *coro) |
847 | coro_state_destroy (pTHX_ struct coro *coro) |
758 | { |
848 | { |
759 | if (coro->refcnt--) |
849 | if (coro->flags & CF_DESTROYED) |
760 | return; |
850 | return 0; |
761 | |
851 | |
|
|
852 | coro->flags |= CF_DESTROYED; |
|
|
853 | |
762 | if (coro->flags & CF_RUNNING) |
854 | if (coro->flags & CF_READY) |
763 | croak ("FATAL: tried to destroy currently running coroutine"); |
855 | { |
|
|
856 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
857 | /* alternative: look through all ready queues and remove the coro */ |
|
|
858 | LOCK; |
|
|
859 | --coro_nready; |
|
|
860 | UNLOCK; |
|
|
861 | } |
|
|
862 | else |
|
|
863 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
764 | |
864 | |
765 | if (coro->mainstack && coro->mainstack != main_mainstack) |
865 | if (coro->mainstack && coro->mainstack != main_mainstack) |
766 | { |
866 | { |
767 | struct coro temp; |
867 | struct coro temp; |
768 | |
868 | |
769 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
869 | assert (!(coro->flags & CF_RUNNING)); |
770 | LOAD (coro); |
|
|
771 | |
870 | |
|
|
871 | Zero (&temp, 1, struct coro); |
|
|
872 | temp.save = CORO_SAVE_DEF; |
|
|
873 | |
|
|
874 | if (coro->flags & CF_RUNNING) |
|
|
875 | croak ("FATAL: tried to destroy currently running coroutine"); |
|
|
876 | |
|
|
877 | save_perl (aTHX_ &temp); |
|
|
878 | load_perl (aTHX_ coro); |
|
|
879 | |
772 | coro_destroy_stacks (); |
880 | coro_destroy_stacks (aTHX); |
773 | |
881 | |
774 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
882 | load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ |
775 | |
883 | |
776 | coro->mainstack = 0; |
884 | coro->mainstack = 0; |
777 | } |
885 | } |
778 | |
886 | |
779 | cctx_free (coro->cctx); |
887 | cctx_destroy (coro->cctx); |
780 | SvREFCNT_dec (coro->args); |
888 | SvREFCNT_dec (coro->args); |
781 | Safefree (coro); |
889 | |
|
|
890 | return 1; |
782 | } |
891 | } |
783 | |
892 | |
784 | static int |
893 | static int |
785 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
894 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
786 | { |
895 | { |
787 | struct coro *coro = (struct coro *)mg->mg_ptr; |
896 | struct coro *coro = (struct coro *)mg->mg_ptr; |
788 | mg->mg_ptr = 0; |
897 | mg->mg_ptr = 0; |
789 | |
898 | |
|
|
899 | if (--coro->refcnt < 0) |
|
|
900 | { |
790 | coro_state_destroy (coro); |
901 | coro_state_destroy (aTHX_ coro); |
|
|
902 | Safefree (coro); |
|
|
903 | } |
791 | |
904 | |
792 | return 0; |
905 | return 0; |
793 | } |
906 | } |
794 | |
907 | |
795 | static int |
908 | static int |
… | |
… | |
802 | return 0; |
915 | return 0; |
803 | } |
916 | } |
804 | |
917 | |
805 | static MGVTBL coro_state_vtbl = { |
918 | static MGVTBL coro_state_vtbl = { |
806 | 0, 0, 0, 0, |
919 | 0, 0, 0, 0, |
807 | coro_state_clear, |
920 | coro_state_free, |
808 | 0, |
921 | 0, |
809 | #ifdef MGf_DUP |
922 | #ifdef MGf_DUP |
810 | coro_state_dup, |
923 | coro_state_dup, |
811 | #else |
924 | #else |
812 | # define MGf_DUP 0 |
925 | # define MGf_DUP 0 |
813 | #endif |
926 | #endif |
814 | }; |
927 | }; |
815 | |
928 | |
816 | static struct coro * |
929 | static struct coro * |
817 | SvSTATE (SV *coro) |
930 | SvSTATE_ (pTHX_ SV *coro) |
818 | { |
931 | { |
819 | HV *stash; |
932 | HV *stash; |
820 | MAGIC *mg; |
933 | MAGIC *mg; |
821 | |
934 | |
822 | if (SvROK (coro)) |
935 | if (SvROK (coro)) |
… | |
… | |
828 | /* very slow, but rare, check */ |
941 | /* very slow, but rare, check */ |
829 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
942 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
830 | croak ("Coro::State object required"); |
943 | croak ("Coro::State object required"); |
831 | } |
944 | } |
832 | |
945 | |
833 | mg = SvMAGIC (coro); |
946 | mg = CORO_MAGIC (coro); |
834 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
835 | return (struct coro *)mg->mg_ptr; |
947 | return (struct coro *)mg->mg_ptr; |
836 | } |
948 | } |
837 | |
949 | |
|
|
950 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
|
|
951 | |
838 | static void |
952 | static void |
839 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
953 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
840 | { |
954 | { |
841 | ta->prev = SvSTATE (prev); |
955 | ta->prev = SvSTATE (prev_sv); |
842 | ta->next = SvSTATE (next); |
956 | ta->next = SvSTATE (next_sv); |
843 | ta->flags = flags; |
|
|
844 | } |
957 | } |
845 | |
958 | |
846 | static void |
959 | static void |
847 | api_transfer (SV *prev, SV *next, int flags) |
960 | api_transfer (SV *prev_sv, SV *next_sv) |
848 | { |
961 | { |
849 | dTHX; |
962 | dTHX; |
850 | struct transfer_args ta; |
963 | struct transfer_args ta; |
851 | |
964 | |
852 | prepare_transfer (&ta, prev, next, flags); |
965 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
853 | TRANSFER (ta); |
966 | TRANSFER (ta); |
854 | } |
967 | } |
855 | |
968 | |
|
|
969 | static int |
|
|
970 | api_save (SV *coro_sv, int new_save) |
|
|
971 | { |
|
|
972 | dTHX; |
|
|
973 | struct coro *coro = SvSTATE (coro_sv); |
|
|
974 | int old_save = coro->save; |
|
|
975 | |
|
|
976 | if (new_save >= 0) |
|
|
977 | coro->save = new_save; |
|
|
978 | |
|
|
979 | return old_save; |
|
|
980 | } |
|
|
981 | |
856 | /** Coro ********************************************************************/ |
982 | /** Coro ********************************************************************/ |
857 | |
983 | |
858 | #define PRIO_MAX 3 |
|
|
859 | #define PRIO_HIGH 1 |
|
|
860 | #define PRIO_NORMAL 0 |
|
|
861 | #define PRIO_LOW -1 |
|
|
862 | #define PRIO_IDLE -3 |
|
|
863 | #define PRIO_MIN -4 |
|
|
864 | |
|
|
865 | /* for Coro.pm */ |
|
|
866 | static GV *coro_current, *coro_idle; |
|
|
867 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
|
|
868 | static int coro_nready; |
|
|
869 | |
|
|
870 | static void |
984 | static void |
871 | coro_enq (SV *coro_sv) |
985 | coro_enq (pTHX_ SV *coro_sv) |
872 | { |
986 | { |
873 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
987 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
874 | coro_nready++; |
|
|
875 | } |
988 | } |
876 | |
989 | |
877 | static SV * |
990 | static SV * |
878 | coro_deq (int min_prio) |
991 | coro_deq (pTHX_ int min_prio) |
879 | { |
992 | { |
880 | int prio = PRIO_MAX - PRIO_MIN; |
993 | int prio = PRIO_MAX - PRIO_MIN; |
881 | |
994 | |
882 | min_prio -= PRIO_MIN; |
995 | min_prio -= PRIO_MIN; |
883 | if (min_prio < 0) |
996 | if (min_prio < 0) |
884 | min_prio = 0; |
997 | min_prio = 0; |
885 | |
998 | |
886 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
999 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
887 | if (AvFILLp (coro_ready [prio]) >= 0) |
1000 | if (AvFILLp (coro_ready [prio]) >= 0) |
888 | { |
|
|
889 | coro_nready--; |
|
|
890 | return av_shift (coro_ready [prio]); |
1001 | return av_shift (coro_ready [prio]); |
891 | } |
|
|
892 | |
1002 | |
893 | return 0; |
1003 | return 0; |
894 | } |
1004 | } |
895 | |
1005 | |
896 | static int |
1006 | static int |
897 | api_ready (SV *coro_sv) |
1007 | api_ready (SV *coro_sv) |
898 | { |
1008 | { |
|
|
1009 | dTHX; |
899 | struct coro *coro; |
1010 | struct coro *coro; |
900 | |
1011 | |
901 | if (SvROK (coro_sv)) |
1012 | if (SvROK (coro_sv)) |
902 | coro_sv = SvRV (coro_sv); |
1013 | coro_sv = SvRV (coro_sv); |
903 | |
1014 | |
904 | coro = SvSTATE (coro_sv); |
1015 | coro = SvSTATE (coro_sv); |
905 | |
1016 | |
906 | if (coro->flags & CF_READY) |
1017 | if (coro->flags & CF_READY) |
907 | return 0; |
1018 | return 0; |
908 | |
1019 | |
909 | if (coro->flags & CF_RUNNING) |
|
|
910 | croak ("Coro::ready called on currently running coroutine"); |
|
|
911 | |
|
|
912 | coro->flags |= CF_READY; |
1020 | coro->flags |= CF_READY; |
913 | |
1021 | |
914 | LOCK; |
1022 | LOCK; |
915 | coro_enq (SvREFCNT_inc (coro_sv)); |
1023 | coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); |
|
|
1024 | ++coro_nready; |
916 | UNLOCK; |
1025 | UNLOCK; |
917 | |
1026 | |
918 | return 1; |
1027 | return 1; |
919 | } |
1028 | } |
920 | |
1029 | |
921 | static int |
1030 | static int |
922 | api_is_ready (SV *coro_sv) |
1031 | api_is_ready (SV *coro_sv) |
923 | { |
1032 | { |
|
|
1033 | dTHX; |
924 | return !!SvSTATE (coro_sv)->flags & CF_READY; |
1034 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
925 | } |
1035 | } |
926 | |
1036 | |
927 | static void |
1037 | static void |
928 | prepare_schedule (struct transfer_args *ta) |
1038 | prepare_schedule (pTHX_ struct transfer_args *ta) |
929 | { |
1039 | { |
930 | SV *current, *prev, *next; |
1040 | SV *prev_sv, *next_sv; |
931 | |
|
|
932 | current = GvSV (coro_current); |
|
|
933 | |
1041 | |
934 | for (;;) |
1042 | for (;;) |
935 | { |
1043 | { |
936 | LOCK; |
1044 | LOCK; |
937 | next = coro_deq (PRIO_MIN); |
1045 | next_sv = coro_deq (aTHX_ PRIO_MIN); |
|
|
1046 | |
|
|
1047 | /* nothing to schedule: call the idle handler */ |
|
|
1048 | if (!next_sv) |
|
|
1049 | { |
|
|
1050 | dSP; |
|
|
1051 | UNLOCK; |
|
|
1052 | |
|
|
1053 | ENTER; |
|
|
1054 | SAVETMPS; |
|
|
1055 | |
|
|
1056 | PUSHMARK (SP); |
|
|
1057 | PUTBACK; |
|
|
1058 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
|
|
1059 | |
|
|
1060 | FREETMPS; |
|
|
1061 | LEAVE; |
|
|
1062 | continue; |
|
|
1063 | } |
|
|
1064 | |
|
|
1065 | ta->next = SvSTATE (next_sv); |
|
|
1066 | |
|
|
1067 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1068 | if (ta->next->flags & CF_DESTROYED) |
|
|
1069 | { |
|
|
1070 | UNLOCK; |
|
|
1071 | SvREFCNT_dec (next_sv); |
|
|
1072 | /* coro_nready is already taken care of by destroy */ |
|
|
1073 | continue; |
|
|
1074 | } |
|
|
1075 | |
|
|
1076 | --coro_nready; |
938 | UNLOCK; |
1077 | UNLOCK; |
939 | |
|
|
940 | if (next) |
|
|
941 | break; |
1078 | break; |
942 | |
|
|
943 | { |
|
|
944 | dSP; |
|
|
945 | |
|
|
946 | ENTER; |
|
|
947 | SAVETMPS; |
|
|
948 | |
|
|
949 | PUSHMARK (SP); |
|
|
950 | PUTBACK; |
|
|
951 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
952 | |
|
|
953 | FREETMPS; |
|
|
954 | LEAVE; |
|
|
955 | } |
1079 | } |
956 | } |
|
|
957 | |
|
|
958 | prev = SvRV (current); |
|
|
959 | SvRV (current) = next; |
|
|
960 | |
1080 | |
961 | /* free this only after the transfer */ |
1081 | /* free this only after the transfer */ |
|
|
1082 | prev_sv = SvRV (coro_current); |
|
|
1083 | SvRV_set (coro_current, next_sv); |
|
|
1084 | ta->prev = SvSTATE (prev_sv); |
|
|
1085 | |
|
|
1086 | assert (ta->next->flags & CF_READY); |
|
|
1087 | ta->next->flags &= ~CF_READY; |
|
|
1088 | |
962 | LOCK; |
1089 | LOCK; |
963 | free_coro_mortal (); |
1090 | free_coro_mortal (aTHX); |
|
|
1091 | coro_mortal = prev_sv; |
964 | UNLOCK; |
1092 | UNLOCK; |
965 | coro_mortal = prev; |
|
|
966 | |
|
|
967 | ta->prev = SvSTATE (prev); |
|
|
968 | ta->next = SvSTATE (next); |
|
|
969 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
970 | |
|
|
971 | ta->next->flags &= ~CF_READY; |
|
|
972 | } |
1093 | } |
973 | |
1094 | |
974 | static void |
1095 | static void |
975 | prepare_cede (struct transfer_args *ta) |
1096 | prepare_cede (pTHX_ struct transfer_args *ta) |
976 | { |
1097 | { |
977 | api_ready (GvSV (coro_current)); |
1098 | api_ready (coro_current); |
978 | |
|
|
979 | prepare_schedule (ta); |
1099 | prepare_schedule (aTHX_ ta); |
|
|
1100 | } |
|
|
1101 | |
|
|
1102 | static int |
|
|
1103 | prepare_cede_notself (pTHX_ struct transfer_args *ta) |
|
|
1104 | { |
|
|
1105 | if (coro_nready) |
|
|
1106 | { |
|
|
1107 | SV *prev = SvRV (coro_current); |
|
|
1108 | prepare_schedule (aTHX_ ta); |
|
|
1109 | api_ready (prev); |
|
|
1110 | return 1; |
|
|
1111 | } |
|
|
1112 | else |
|
|
1113 | return 0; |
980 | } |
1114 | } |
981 | |
1115 | |
982 | static void |
1116 | static void |
983 | api_schedule (void) |
1117 | api_schedule (void) |
984 | { |
1118 | { |
985 | dTHX; |
1119 | dTHX; |
986 | struct transfer_args ta; |
1120 | struct transfer_args ta; |
987 | |
1121 | |
988 | prepare_schedule (&ta); |
1122 | prepare_schedule (aTHX_ &ta); |
989 | TRANSFER (ta); |
1123 | TRANSFER (ta); |
990 | } |
1124 | } |
991 | |
1125 | |
992 | static void |
1126 | static int |
993 | api_cede (void) |
1127 | api_cede (void) |
994 | { |
1128 | { |
995 | dTHX; |
1129 | dTHX; |
996 | struct transfer_args ta; |
1130 | struct transfer_args ta; |
997 | |
1131 | |
998 | prepare_cede (&ta); |
1132 | prepare_cede (aTHX_ &ta); |
|
|
1133 | |
|
|
1134 | if (ta.prev != ta.next) |
|
|
1135 | { |
999 | TRANSFER (ta); |
1136 | TRANSFER (ta); |
|
|
1137 | return 1; |
|
|
1138 | } |
|
|
1139 | else |
|
|
1140 | return 0; |
|
|
1141 | } |
|
|
1142 | |
|
|
1143 | static int |
|
|
1144 | api_cede_notself (void) |
|
|
1145 | { |
|
|
1146 | dTHX; |
|
|
1147 | struct transfer_args ta; |
|
|
1148 | |
|
|
1149 | if (prepare_cede_notself (aTHX_ &ta)) |
|
|
1150 | { |
|
|
1151 | TRANSFER (ta); |
|
|
1152 | return 1; |
|
|
1153 | } |
|
|
1154 | else |
|
|
1155 | return 0; |
1000 | } |
1156 | } |
1001 | |
1157 | |
1002 | MODULE = Coro::State PACKAGE = Coro::State |
1158 | MODULE = Coro::State PACKAGE = Coro::State |
1003 | |
1159 | |
1004 | PROTOTYPES: DISABLE |
1160 | PROTOTYPES: DISABLE |
… | |
… | |
1010 | #endif |
1166 | #endif |
1011 | BOOT_PAGESIZE; |
1167 | BOOT_PAGESIZE; |
1012 | |
1168 | |
1013 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1169 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1014 | |
1170 | |
1015 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1171 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
1016 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1172 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
1017 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1173 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
|
|
1174 | newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
|
|
1175 | newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH)); |
|
|
1176 | newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); |
|
|
1177 | newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
1018 | |
1178 | |
1019 | main_mainstack = PL_mainstack; |
1179 | main_mainstack = PL_mainstack; |
1020 | |
1180 | |
1021 | coroapi.ver = CORO_API_VERSION; |
1181 | coroapi.ver = CORO_API_VERSION; |
1022 | coroapi.transfer = api_transfer; |
1182 | coroapi.transfer = api_transfer; |
… | |
… | |
1032 | HV *hv; |
1192 | HV *hv; |
1033 | int i; |
1193 | int i; |
1034 | |
1194 | |
1035 | Newz (0, coro, 1, struct coro); |
1195 | Newz (0, coro, 1, struct coro); |
1036 | coro->args = newAV (); |
1196 | coro->args = newAV (); |
|
|
1197 | coro->save = CORO_SAVE_DEF; |
|
|
1198 | coro->flags = CF_NEW; |
1037 | |
1199 | |
1038 | hv = newHV (); |
1200 | hv = newHV (); |
1039 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1201 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1040 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1202 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1041 | |
1203 | |
1042 | for (i = 1; i < items; i++) |
1204 | for (i = 1; i < items; i++) |
1043 | av_push (coro->args, newSVsv (ST (i))); |
1205 | av_push (coro->args, newSVsv (ST (i))); |
1044 | } |
1206 | } |
1045 | OUTPUT: |
1207 | OUTPUT: |
|
|
1208 | RETVAL |
|
|
1209 | |
|
|
1210 | int |
|
|
1211 | save (SV *coro, int new_save = -1) |
|
|
1212 | CODE: |
|
|
1213 | RETVAL = api_save (coro, new_save); |
|
|
1214 | OUTPUT: |
|
|
1215 | RETVAL |
|
|
1216 | |
|
|
1217 | int |
|
|
1218 | save_also (SV *coro_sv, int save_also) |
|
|
1219 | CODE: |
|
|
1220 | { |
|
|
1221 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1222 | RETVAL = coro->save; |
|
|
1223 | coro->save |= save_also; |
|
|
1224 | } |
|
|
1225 | OUTPUT: |
1046 | RETVAL |
1226 | RETVAL |
1047 | |
1227 | |
1048 | void |
1228 | void |
1049 | _set_stacklevel (...) |
1229 | _set_stacklevel (...) |
1050 | ALIAS: |
1230 | ALIAS: |
1051 | Coro::State::transfer = 1 |
1231 | Coro::State::transfer = 1 |
1052 | Coro::schedule = 2 |
1232 | Coro::schedule = 2 |
1053 | Coro::cede = 3 |
1233 | Coro::cede = 3 |
1054 | Coro::Cont::yield = 4 |
1234 | Coro::cede_notself = 4 |
1055 | CODE: |
1235 | CODE: |
1056 | { |
1236 | { |
1057 | struct transfer_args ta; |
1237 | struct transfer_args ta; |
1058 | |
1238 | |
1059 | switch (ix) |
1239 | switch (ix) |
1060 | { |
1240 | { |
1061 | case 0: |
1241 | case 0: |
1062 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1242 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1063 | ta.next = 0; |
1243 | ta.next = 0; |
1064 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1065 | break; |
1244 | break; |
1066 | |
1245 | |
1067 | case 1: |
1246 | case 1: |
1068 | if (items != 3) |
1247 | if (items != 2) |
1069 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
1248 | croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
1070 | |
1249 | |
1071 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
1250 | prepare_transfer (aTHX_ &ta, ST (0), ST (1)); |
1072 | break; |
1251 | break; |
1073 | |
1252 | |
1074 | case 2: |
1253 | case 2: |
1075 | prepare_schedule (&ta); |
1254 | prepare_schedule (aTHX_ &ta); |
1076 | break; |
1255 | break; |
1077 | |
1256 | |
1078 | case 3: |
1257 | case 3: |
1079 | prepare_cede (&ta); |
1258 | prepare_cede (aTHX_ &ta); |
1080 | break; |
1259 | break; |
1081 | |
1260 | |
1082 | case 4: |
1261 | case 4: |
1083 | { |
1262 | if (!prepare_cede_notself (aTHX_ &ta)) |
1084 | SV *yieldstack; |
1263 | XSRETURN_EMPTY; |
1085 | SV *sv; |
|
|
1086 | AV *defav = GvAV (PL_defgv); |
|
|
1087 | |
1264 | |
1088 | yieldstack = *hv_fetch ( |
|
|
1089 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1090 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1091 | 0 |
|
|
1092 | ); |
|
|
1093 | |
|
|
1094 | /* set up @_ -- ugly */ |
|
|
1095 | av_clear (defav); |
|
|
1096 | av_fill (defav, items - 1); |
|
|
1097 | while (items--) |
|
|
1098 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1099 | |
|
|
1100 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1101 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1102 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1103 | ta.flags = 0; |
|
|
1104 | SvREFCNT_dec (sv); |
|
|
1105 | } |
|
|
1106 | break; |
1265 | break; |
1107 | |
|
|
1108 | } |
1266 | } |
1109 | |
1267 | |
|
|
1268 | BARRIER; |
1110 | TRANSFER (ta); |
1269 | TRANSFER (ta); |
1111 | } |
|
|
1112 | |
1270 | |
1113 | void |
1271 | if (GIMME_V != G_VOID && ta.next != ta.prev) |
1114 | _clone_state_from (SV *dst, SV *src) |
1272 | XSRETURN_YES; |
|
|
1273 | } |
|
|
1274 | |
|
|
1275 | bool |
|
|
1276 | _destroy (SV *coro_sv) |
1115 | CODE: |
1277 | CODE: |
1116 | { |
1278 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
1117 | struct coro *coro_src = SvSTATE (src); |
1279 | OUTPUT: |
1118 | |
1280 | RETVAL |
1119 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
|
|
1120 | |
|
|
1121 | ++coro_src->refcnt; |
|
|
1122 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
|
|
1123 | } |
|
|
1124 | |
1281 | |
1125 | void |
1282 | void |
1126 | _exit (code) |
1283 | _exit (code) |
1127 | int code |
1284 | int code |
1128 | PROTOTYPE: $ |
1285 | PROTOTYPE: $ |
1129 | CODE: |
1286 | CODE: |
1130 | _exit (code); |
1287 | _exit (code); |
1131 | |
1288 | |
1132 | int |
1289 | int |
|
|
1290 | cctx_stacksize (int new_stacksize = 0) |
|
|
1291 | CODE: |
|
|
1292 | RETVAL = coro_stacksize; |
|
|
1293 | if (new_stacksize) |
|
|
1294 | coro_stacksize = new_stacksize; |
|
|
1295 | OUTPUT: |
|
|
1296 | RETVAL |
|
|
1297 | |
|
|
1298 | int |
1133 | cctx_count () |
1299 | cctx_count () |
1134 | CODE: |
1300 | CODE: |
1135 | RETVAL = cctx_count; |
1301 | RETVAL = cctx_count; |
1136 | OUTPUT: |
1302 | OUTPUT: |
1137 | RETVAL |
1303 | RETVAL |
… | |
… | |
1156 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1322 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1157 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1323 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1158 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1324 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1159 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1325 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1160 | |
1326 | |
1161 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1327 | coro_current = get_sv ("Coro::current", FALSE); |
1162 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1328 | SvREADONLY_on (coro_current); |
1163 | |
1329 | |
1164 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1330 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1165 | coro_ready[i] = newAV (); |
1331 | coro_ready[i] = newAV (); |
1166 | |
1332 | |
1167 | { |
1333 | { |
1168 | SV *sv = perl_get_sv("Coro::API", 1); |
1334 | SV *sv = perl_get_sv("Coro::API", 1); |
1169 | |
1335 | |
1170 | coroapi.schedule = api_schedule; |
1336 | coroapi.schedule = api_schedule; |
|
|
1337 | coroapi.save = api_save; |
1171 | coroapi.cede = api_cede; |
1338 | coroapi.cede = api_cede; |
|
|
1339 | coroapi.cede_notself = api_cede_notself; |
1172 | coroapi.ready = api_ready; |
1340 | coroapi.ready = api_ready; |
1173 | coroapi.is_ready = api_is_ready; |
1341 | coroapi.is_ready = api_is_ready; |
1174 | coroapi.nready = &coro_nready; |
1342 | coroapi.nready = &coro_nready; |
1175 | coroapi.current = coro_current; |
1343 | coroapi.current = coro_current; |
1176 | |
1344 | |
1177 | GCoroAPI = &coroapi; |
1345 | GCoroAPI = &coroapi; |
1178 | sv_setiv (sv, (IV)&coroapi); |
1346 | sv_setiv (sv, (IV)&coroapi); |
1179 | SvREADONLY_on (sv); |
1347 | SvREADONLY_on (sv); |
1180 | } |
1348 | } |
1181 | } |
1349 | } |
|
|
1350 | |
|
|
1351 | void |
|
|
1352 | _set_current (SV *current) |
|
|
1353 | PROTOTYPE: $ |
|
|
1354 | CODE: |
|
|
1355 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
1356 | SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1182 | |
1357 | |
1183 | int |
1358 | int |
1184 | prio (Coro::State coro, int newprio = 0) |
1359 | prio (Coro::State coro, int newprio = 0) |
1185 | ALIAS: |
1360 | ALIAS: |
1186 | nice = 1 |
1361 | nice = 1 |
… | |
… | |
1189 | RETVAL = coro->prio; |
1364 | RETVAL = coro->prio; |
1190 | |
1365 | |
1191 | if (items > 1) |
1366 | if (items > 1) |
1192 | { |
1367 | { |
1193 | if (ix) |
1368 | if (ix) |
1194 | newprio += coro->prio; |
1369 | newprio = coro->prio - newprio; |
1195 | |
1370 | |
1196 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1371 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1197 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1372 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1198 | |
1373 | |
1199 | coro->prio = newprio; |
1374 | coro->prio = newprio; |
1200 | } |
1375 | } |
1201 | } |
1376 | } |
|
|
1377 | OUTPUT: |
|
|
1378 | RETVAL |
1202 | |
1379 | |
1203 | SV * |
1380 | SV * |
1204 | ready (SV *self) |
1381 | ready (SV *self) |
1205 | PROTOTYPE: $ |
1382 | PROTOTYPE: $ |
1206 | CODE: |
1383 | CODE: |
… | |
… | |
1228 | |
1405 | |
1229 | SV * |
1406 | SV * |
1230 | _get_state () |
1407 | _get_state () |
1231 | CODE: |
1408 | CODE: |
1232 | { |
1409 | { |
1233 | struct { |
1410 | struct io_state *data; |
1234 | int errorno; |
|
|
1235 | int laststype; |
|
|
1236 | int laststatval; |
|
|
1237 | Stat_t statcache; |
|
|
1238 | } data; |
|
|
1239 | |
1411 | |
|
|
1412 | RETVAL = newSV (sizeof (struct io_state)); |
|
|
1413 | data = (struct io_state *)SvPVX (RETVAL); |
|
|
1414 | SvCUR_set (RETVAL, sizeof (struct io_state)); |
|
|
1415 | SvPOK_only (RETVAL); |
|
|
1416 | |
1240 | data.errorno = errno; |
1417 | data->errorno = errno; |
1241 | data.laststype = PL_laststype; |
1418 | data->laststype = PL_laststype; |
1242 | data.laststatval = PL_laststatval; |
1419 | data->laststatval = PL_laststatval; |
1243 | data.statcache = PL_statcache; |
1420 | data->statcache = PL_statcache; |
1244 | |
|
|
1245 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1246 | } |
1421 | } |
1247 | OUTPUT: |
1422 | OUTPUT: |
1248 | RETVAL |
1423 | RETVAL |
1249 | |
1424 | |
1250 | void |
1425 | void |
1251 | _set_state (char *data_) |
1426 | _set_state (char *data_) |
1252 | PROTOTYPE: $ |
1427 | PROTOTYPE: $ |
1253 | CODE: |
1428 | CODE: |
1254 | { |
1429 | { |
1255 | struct { |
1430 | struct io_state *data = (void *)data_; |
1256 | int errorno; |
|
|
1257 | int laststype; |
|
|
1258 | int laststatval; |
|
|
1259 | Stat_t statcache; |
|
|
1260 | } *data = (void *)data_; |
|
|
1261 | |
1431 | |
1262 | errno = data->errorno; |
1432 | errno = data->errorno; |
1263 | PL_laststype = data->laststype; |
1433 | PL_laststype = data->laststype; |
1264 | PL_laststatval = data->laststatval; |
1434 | PL_laststatval = data->laststatval; |
1265 | PL_statcache = data->statcache; |
1435 | PL_statcache = data->statcache; |
1266 | } |
1436 | } |
|
|
1437 | |