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 | /* the maximum number of idle cctx that will be pooled */ |
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14 | #define MAX_IDLE_CCTX 8 |
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15 | |
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16 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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17 | (PERL_REVISION > (a) \ |
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18 | || (PERL_REVISION == (a) \ |
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19 | && (PERL_VERSION > (b) \ |
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20 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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21 | |
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22 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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23 | # ifndef PL_ppaddr |
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24 | # define PL_ppaddr ppaddr |
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25 | # endif |
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26 | # ifndef call_sv |
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27 | # define call_sv perl_call_sv |
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28 | # endif |
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29 | # ifndef get_sv |
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30 | # define get_sv perl_get_sv |
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31 | # endif |
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32 | # ifndef get_cv |
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33 | # define get_cv perl_get_cv |
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34 | # endif |
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35 | # ifndef IS_PADGV |
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36 | # define IS_PADGV(v) 0 |
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37 | # endif |
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38 | # ifndef IS_PADCONST |
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39 | # define IS_PADCONST(v) 0 |
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40 | # endif |
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41 | #endif |
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42 | |
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43 | #include <stdio.h> |
11 | #include <stdio.h> |
44 | #include <errno.h> |
12 | #include <errno.h> |
45 | |
13 | #include <assert.h> |
46 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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47 | # undef STACKGUARD |
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48 | #endif |
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49 | |
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50 | #ifndef STACKGUARD |
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51 | # define STACKGUARD 0 |
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52 | #endif |
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53 | |
14 | |
54 | #ifdef HAVE_MMAP |
15 | #ifdef HAVE_MMAP |
55 | # include <unistd.h> |
16 | # include <unistd.h> |
56 | # include <sys/mman.h> |
17 | # include <sys/mman.h> |
57 | # ifndef MAP_ANONYMOUS |
18 | # ifndef MAP_ANONYMOUS |
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72 | #else |
33 | #else |
73 | # define PAGESIZE 0 |
34 | # define PAGESIZE 0 |
74 | # define BOOT_PAGESIZE (void)0 |
35 | # define BOOT_PAGESIZE (void)0 |
75 | #endif |
36 | #endif |
76 | |
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 | |
77 | /* 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 |
78 | * 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 |
79 | * and should be unique. */ |
95 | * and should be unique. */ |
80 | #define dSTACKLEVEL int stacklevel |
96 | #define dSTACKLEVEL int stacklevel |
81 | #define STACKLEVEL ((void *)&stacklevel) |
97 | #define STACKLEVEL ((void *)&stacklevel) |
82 | |
98 | |
83 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
99 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
84 | |
100 | |
85 | #if __GNUC__ >= 3 |
101 | #if __GNUC__ >= 3 |
86 | # define attribute(x) __attribute__(x) |
102 | # define attribute(x) __attribute__(x) |
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103 | # define BARRIER __asm__ __volatile__ ("" : : : "memory") |
87 | #else |
104 | #else |
88 | # define attribute(x) |
105 | # define attribute(x) |
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106 | # define BARRIER |
89 | #endif |
107 | #endif |
90 | |
108 | |
91 | #define NOINLINE attribute ((noinline)) |
109 | #define NOINLINE attribute ((noinline)) |
92 | |
110 | |
93 | #include "CoroAPI.h" |
111 | #include "CoroAPI.h" |
94 | |
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95 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
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96 | |
112 | |
97 | #ifdef USE_ITHREADS |
113 | #ifdef USE_ITHREADS |
98 | static perl_mutex coro_mutex; |
114 | static perl_mutex coro_mutex; |
99 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
115 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
100 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
116 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
101 | #else |
117 | #else |
102 | # define LOCK (void)0 |
118 | # define LOCK (void)0 |
103 | # define UNLOCK (void)0 |
119 | # define UNLOCK (void)0 |
104 | #endif |
120 | #endif |
105 | |
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; |
106 | static struct CoroAPI coroapi; |
132 | static struct CoroAPI coroapi; |
107 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
133 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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134 | static JMPENV *main_top_env; |
108 | static HV *coro_state_stash, *coro_stash; |
135 | static HV *coro_state_stash, *coro_stash; |
109 | static SV *coro_mortal; /* will be freed after next transfer */ |
136 | static SV *coro_mortal; /* will be freed after next transfer */ |
110 | |
137 | |
111 | static struct coro_cctx *cctx_first; |
138 | static struct coro_cctx *cctx_first; |
112 | static int cctx_count, cctx_idle; |
139 | static int cctx_count, cctx_idle; |
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115 | typedef struct coro_cctx { |
142 | typedef struct coro_cctx { |
116 | struct coro_cctx *next; |
143 | struct coro_cctx *next; |
117 | |
144 | |
118 | /* the stack */ |
145 | /* the stack */ |
119 | void *sptr; |
146 | void *sptr; |
120 | long ssize; /* positive == mmap, otherwise malloc */ |
147 | size_t ssize; |
121 | |
148 | |
122 | /* cpu state */ |
149 | /* cpu state */ |
123 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
150 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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151 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
124 | JMPENV *top_env; |
152 | JMPENV *top_env; |
125 | coro_context cctx; |
153 | coro_context cctx; |
126 | |
154 | |
127 | int inuse; |
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128 | |
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129 | #if USE_VALGRIND |
155 | #if CORO_USE_VALGRIND |
130 | int valgrind_id; |
156 | int valgrind_id; |
131 | #endif |
157 | #endif |
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158 | char inuse, mapped; |
132 | } coro_cctx; |
159 | } coro_cctx; |
133 | |
160 | |
134 | enum { |
161 | enum { |
135 | CF_RUNNING = 0x0001, /* coroutine is running */ |
162 | CF_RUNNING = 0x0001, /* coroutine is running */ |
136 | CF_READY = 0x0002, /* coroutine is ready */ |
163 | CF_READY = 0x0002, /* coroutine is ready */ |
137 | CF_NEW = 0x0004, /* ahs never been switched to */ |
164 | CF_NEW = 0x0004, /* has never been switched to */ |
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165 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
138 | }; |
166 | }; |
139 | |
167 | |
140 | /* this is a structure representing a perl-level coroutine */ |
168 | /* this is a structure representing a perl-level coroutine */ |
141 | struct coro { |
169 | struct coro { |
142 | /* the c coroutine allocated to this perl coroutine, if any */ |
170 | /* the c coroutine allocated to this perl coroutine, if any */ |
143 | coro_cctx *cctx; |
171 | coro_cctx *cctx; |
144 | |
172 | |
145 | /* data associated with this coroutine (initial args) */ |
173 | /* data associated with this coroutine (initial args) */ |
146 | AV *args; |
174 | AV *args; |
147 | int refcnt; |
175 | int refcnt; |
148 | int flags; |
176 | int save; /* CORO_SAVE flags */ |
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177 | int flags; /* CF_ flags */ |
149 | |
178 | |
150 | /* optionally saved, might be zero */ |
179 | /* optionally saved, might be zero */ |
151 | AV *defav; |
180 | AV *defav; /* @_ */ |
152 | SV *defsv; |
181 | SV *defsv; /* $_ */ |
153 | SV *errsv; |
182 | SV *errsv; /* $@ */ |
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183 | GV *deffh; /* default filehandle */ |
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184 | SV *irssv; /* $/ */ |
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185 | SV *irssv_sv; /* real $/ cache */ |
154 | |
186 | |
155 | #define VAR(name,type) type name; |
187 | #define VAR(name,type) type name; |
156 | # include "state.h" |
188 | # include "state.h" |
157 | #undef VAR |
189 | #undef VAR |
158 | |
190 | |
159 | /* coro process data */ |
191 | /* coro process data */ |
160 | int prio; |
192 | int prio; |
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193 | |
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194 | /* linked list */ |
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195 | struct coro *next, *prev; |
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196 | HV *hv; /* the perl hash associated with this coro, if any */ |
161 | }; |
197 | }; |
162 | |
198 | |
163 | typedef struct coro *Coro__State; |
199 | typedef struct coro *Coro__State; |
164 | typedef struct coro *Coro__State_or_hashref; |
200 | typedef struct coro *Coro__State_or_hashref; |
165 | |
201 | |
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202 | /** Coro ********************************************************************/ |
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203 | |
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204 | #define PRIO_MAX 3 |
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205 | #define PRIO_HIGH 1 |
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206 | #define PRIO_NORMAL 0 |
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207 | #define PRIO_LOW -1 |
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208 | #define PRIO_IDLE -3 |
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209 | #define PRIO_MIN -4 |
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210 | |
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211 | /* for Coro.pm */ |
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212 | static SV *coro_current; |
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213 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
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214 | static int coro_nready; |
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215 | static struct coro *coro_first; |
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216 | |
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217 | /** lowlevel stuff **********************************************************/ |
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218 | |
166 | static AV * |
219 | static AV * |
167 | coro_clone_padlist (CV *cv) |
220 | coro_clone_padlist (pTHX_ CV *cv) |
168 | { |
221 | { |
169 | AV *padlist = CvPADLIST (cv); |
222 | AV *padlist = CvPADLIST (cv); |
170 | AV *newpadlist, *newpad; |
223 | AV *newpadlist, *newpad; |
171 | |
224 | |
172 | newpadlist = newAV (); |
225 | newpadlist = newAV (); |
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184 | |
237 | |
185 | return newpadlist; |
238 | return newpadlist; |
186 | } |
239 | } |
187 | |
240 | |
188 | static void |
241 | static void |
189 | free_padlist (AV *padlist) |
242 | free_padlist (pTHX_ AV *padlist) |
190 | { |
243 | { |
191 | /* may be during global destruction */ |
244 | /* may be during global destruction */ |
192 | if (SvREFCNT (padlist)) |
245 | if (SvREFCNT (padlist)) |
193 | { |
246 | { |
194 | I32 i = AvFILLp (padlist); |
247 | I32 i = AvFILLp (padlist); |
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215 | AV *padlist; |
268 | AV *padlist; |
216 | AV *av = (AV *)mg->mg_obj; |
269 | AV *av = (AV *)mg->mg_obj; |
217 | |
270 | |
218 | /* casting is fun. */ |
271 | /* casting is fun. */ |
219 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
272 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
220 | free_padlist (padlist); |
273 | free_padlist (aTHX_ padlist); |
221 | |
274 | |
222 | SvREFCNT_dec (av); |
275 | SvREFCNT_dec (av); |
223 | |
276 | |
224 | return 0; |
277 | return 0; |
225 | } |
278 | } |
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235 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
288 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
236 | : 0 |
289 | : 0 |
237 | |
290 | |
238 | /* the next two functions merely cache the padlists */ |
291 | /* the next two functions merely cache the padlists */ |
239 | static void |
292 | static void |
240 | get_padlist (CV *cv) |
293 | get_padlist (pTHX_ CV *cv) |
241 | { |
294 | { |
242 | MAGIC *mg = CORO_MAGIC (cv); |
295 | MAGIC *mg = CORO_MAGIC (cv); |
243 | AV *av; |
296 | AV *av; |
244 | |
297 | |
245 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
298 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
246 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
299 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
247 | else |
300 | else |
248 | { |
301 | { |
249 | #if 0 |
302 | #if CORO_PREFER_PERL_FUNCTIONS |
250 | /* this is probably cleaner, but also slower? */ |
303 | /* this is probably cleaner, but also slower? */ |
251 | CV *cp = Perl_cv_clone (cv); |
304 | CV *cp = Perl_cv_clone (cv); |
252 | CvPADLIST (cv) = CvPADLIST (cp); |
305 | CvPADLIST (cv) = CvPADLIST (cp); |
253 | CvPADLIST (cp) = 0; |
306 | CvPADLIST (cp) = 0; |
254 | SvREFCNT_dec (cp); |
307 | SvREFCNT_dec (cp); |
255 | #else |
308 | #else |
256 | CvPADLIST (cv) = coro_clone_padlist (cv); |
309 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
257 | #endif |
310 | #endif |
258 | } |
311 | } |
259 | } |
312 | } |
260 | |
313 | |
261 | static void |
314 | static void |
262 | put_padlist (CV *cv) |
315 | put_padlist (pTHX_ CV *cv) |
263 | { |
316 | { |
264 | MAGIC *mg = CORO_MAGIC (cv); |
317 | MAGIC *mg = CORO_MAGIC (cv); |
265 | AV *av; |
318 | AV *av; |
266 | |
319 | |
267 | if (!mg) |
320 | if (!mg) |
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278 | av_extend (av, AvMAX (av) + 1); |
331 | av_extend (av, AvMAX (av) + 1); |
279 | |
332 | |
280 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
333 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
281 | } |
334 | } |
282 | |
335 | |
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336 | /** load & save, init *******************************************************/ |
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337 | |
283 | #define SB do { |
338 | #define SB do { |
284 | #define SE } while (0) |
339 | #define SE } while (0) |
285 | |
340 | |
286 | #define LOAD(state) load_state ((state)) |
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287 | #define SAVE(state,flags) save_state ((state),(flags)) |
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288 | |
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289 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
341 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
290 | |
342 | |
291 | static void |
343 | static void |
292 | load_state (Coro__State c) |
344 | load_perl (pTHX_ Coro__State c) |
293 | { |
345 | { |
294 | #define VAR(name,type) PL_ ## name = c->name; |
346 | #define VAR(name,type) PL_ ## name = c->name; |
295 | # include "state.h" |
347 | # include "state.h" |
296 | #undef VAR |
348 | #undef VAR |
297 | |
349 | |
298 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
350 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
299 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
351 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
300 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
352 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
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353 | if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh); |
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354 | |
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355 | if (c->irssv) |
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356 | { |
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357 | if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
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358 | { |
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359 | SvREFCNT_dec (c->irssv); |
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360 | c->irssv = 0; |
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361 | } |
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362 | else |
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363 | { |
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364 | REPLACE_SV (PL_rs, c->irssv); |
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365 | if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
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366 | sv_setsv (c->irssv_sv, PL_rs); |
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367 | } |
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368 | } |
301 | |
369 | |
302 | { |
370 | { |
303 | dSP; |
371 | dSP; |
304 | CV *cv; |
372 | CV *cv; |
305 | |
373 | |
306 | /* now do the ugly restore mess */ |
374 | /* now do the ugly restore mess */ |
307 | while ((cv = (CV *)POPs)) |
375 | while ((cv = (CV *)POPs)) |
308 | { |
376 | { |
309 | put_padlist (cv); /* mark this padlist as available */ |
377 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
310 | CvDEPTH (cv) = PTR2IV (POPs); |
378 | CvDEPTH (cv) = PTR2IV (POPs); |
311 | CvPADLIST (cv) = (AV *)POPs; |
379 | CvPADLIST (cv) = (AV *)POPs; |
312 | } |
380 | } |
313 | |
381 | |
314 | PUTBACK; |
382 | PUTBACK; |
315 | } |
383 | } |
316 | } |
384 | } |
317 | |
385 | |
318 | static void |
386 | static void |
319 | save_state (Coro__State c, int flags) |
387 | save_perl (pTHX_ Coro__State c) |
320 | { |
388 | { |
321 | { |
389 | { |
322 | dSP; |
390 | dSP; |
323 | I32 cxix = cxstack_ix; |
391 | I32 cxix = cxstack_ix; |
324 | PERL_CONTEXT *ccstk = cxstack; |
392 | PERL_CONTEXT *ccstk = cxstack; |
… | |
… | |
327 | /* |
395 | /* |
328 | * the worst thing you can imagine happens first - we have to save |
396 | * the worst thing you can imagine happens first - we have to save |
329 | * (and reinitialize) all cv's in the whole callchain :( |
397 | * (and reinitialize) all cv's in the whole callchain :( |
330 | */ |
398 | */ |
331 | |
399 | |
|
|
400 | EXTEND (SP, 3 + 1); |
332 | PUSHs (Nullsv); |
401 | PUSHs (Nullsv); |
333 | /* this loop was inspired by pp_caller */ |
402 | /* this loop was inspired by pp_caller */ |
334 | for (;;) |
403 | for (;;) |
335 | { |
404 | { |
336 | while (cxix >= 0) |
405 | while (cxix >= 0) |
337 | { |
406 | { |
338 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
407 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
339 | |
408 | |
340 | if (CxTYPE (cx) == CXt_SUB) |
409 | if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) |
341 | { |
410 | { |
342 | CV *cv = cx->blk_sub.cv; |
411 | CV *cv = cx->blk_sub.cv; |
343 | |
412 | |
344 | if (CvDEPTH (cv)) |
413 | if (CvDEPTH (cv)) |
345 | { |
414 | { |
346 | EXTEND (SP, 3); |
415 | EXTEND (SP, 3); |
347 | |
|
|
348 | PUSHs ((SV *)CvPADLIST (cv)); |
416 | PUSHs ((SV *)CvPADLIST (cv)); |
349 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
417 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
350 | PUSHs ((SV *)cv); |
418 | PUSHs ((SV *)cv); |
351 | |
419 | |
352 | CvDEPTH (cv) = 0; |
420 | CvDEPTH (cv) = 0; |
353 | get_padlist (cv); |
421 | get_padlist (aTHX_ cv); |
354 | } |
422 | } |
355 | } |
423 | } |
356 | #ifdef CXt_FORMAT |
|
|
357 | else if (CxTYPE (cx) == CXt_FORMAT) |
|
|
358 | { |
|
|
359 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
360 | /* my bold guess is as a simple, plain sub... */ |
|
|
361 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
362 | } |
|
|
363 | #endif |
|
|
364 | } |
424 | } |
365 | |
425 | |
366 | if (top_si->si_type == PERLSI_MAIN) |
426 | if (top_si->si_type == PERLSI_MAIN) |
367 | break; |
427 | break; |
368 | |
428 | |
… | |
… | |
372 | } |
432 | } |
373 | |
433 | |
374 | PUTBACK; |
434 | PUTBACK; |
375 | } |
435 | } |
376 | |
436 | |
377 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
437 | c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
378 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
438 | c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
379 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
439 | c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
|
|
440 | c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; |
|
|
441 | c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
380 | |
442 | |
381 | #define VAR(name,type)c->name = PL_ ## name; |
443 | #define VAR(name,type)c->name = PL_ ## name; |
382 | # include "state.h" |
444 | # include "state.h" |
383 | #undef VAR |
445 | #undef VAR |
384 | } |
446 | } |
… | |
… | |
387 | * allocate various perl stacks. This is an exact copy |
449 | * allocate various perl stacks. This is an exact copy |
388 | * of perl.c:init_stacks, except that it uses less memory |
450 | * of perl.c:init_stacks, except that it uses less memory |
389 | * on the (sometimes correct) assumption that coroutines do |
451 | * on the (sometimes correct) assumption that coroutines do |
390 | * not usually need a lot of stackspace. |
452 | * not usually need a lot of stackspace. |
391 | */ |
453 | */ |
|
|
454 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
455 | # define coro_init_stacks init_stacks |
|
|
456 | #else |
392 | static void |
457 | static void |
393 | coro_init_stacks () |
458 | coro_init_stacks (pTHX) |
394 | { |
459 | { |
395 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
460 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
396 | PL_curstackinfo->si_type = PERLSI_MAIN; |
461 | PL_curstackinfo->si_type = PERLSI_MAIN; |
397 | PL_curstack = PL_curstackinfo->si_stack; |
462 | PL_curstack = PL_curstackinfo->si_stack; |
398 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
463 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
… | |
… | |
426 | New(54,PL_retstack,16,OP*); |
491 | New(54,PL_retstack,16,OP*); |
427 | PL_retstack_ix = 0; |
492 | PL_retstack_ix = 0; |
428 | PL_retstack_max = 16; |
493 | PL_retstack_max = 16; |
429 | #endif |
494 | #endif |
430 | } |
495 | } |
|
|
496 | #endif |
431 | |
497 | |
432 | /* |
498 | /* |
433 | * destroy the stacks, the callchain etc... |
499 | * destroy the stacks, the callchain etc... |
434 | */ |
500 | */ |
435 | static void |
501 | static void |
436 | coro_destroy_stacks () |
502 | coro_destroy_stacks (pTHX) |
437 | { |
503 | { |
438 | if (!IN_DESTRUCT) |
504 | if (!IN_DESTRUCT) |
439 | { |
505 | { |
440 | /* is this ugly, I ask? */ |
506 | /* restore all saved variables and stuff */ |
441 | LEAVE_SCOPE (0); |
507 | LEAVE_SCOPE (0); |
|
|
508 | assert (PL_tmps_floor == -1); |
442 | |
509 | |
443 | /* sure it is, but more important: is it correct?? :/ */ |
510 | /* free all temporaries */ |
444 | FREETMPS; |
511 | FREETMPS; |
|
|
512 | assert (PL_tmps_ix == -1); |
445 | |
513 | |
|
|
514 | /* unwind all extra stacks */ |
446 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
515 | POPSTACK_TO (PL_mainstack); |
|
|
516 | |
|
|
517 | /* unwind main stack */ |
|
|
518 | dounwind (-1); |
447 | } |
519 | } |
448 | |
520 | |
449 | while (PL_curstackinfo->si_next) |
521 | while (PL_curstackinfo->si_next) |
450 | PL_curstackinfo = PL_curstackinfo->si_next; |
522 | PL_curstackinfo = PL_curstackinfo->si_next; |
451 | |
523 | |
452 | while (PL_curstackinfo) |
524 | while (PL_curstackinfo) |
453 | { |
525 | { |
454 | PERL_SI *p = PL_curstackinfo->si_prev; |
526 | PERL_SI *p = PL_curstackinfo->si_prev; |
455 | |
527 | |
456 | { /*D*//*remove*/ |
|
|
457 | dSP; |
|
|
458 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
459 | PUTBACK; /* possibly superfluous */ |
|
|
460 | } |
|
|
461 | |
|
|
462 | if (!IN_DESTRUCT) |
528 | if (!IN_DESTRUCT) |
463 | { |
|
|
464 | dounwind (-1);/*D*//*remove*/ |
|
|
465 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
529 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
466 | } |
|
|
467 | |
530 | |
468 | Safefree (PL_curstackinfo->si_cxstack); |
531 | Safefree (PL_curstackinfo->si_cxstack); |
469 | Safefree (PL_curstackinfo); |
532 | Safefree (PL_curstackinfo); |
470 | PL_curstackinfo = p; |
533 | PL_curstackinfo = p; |
471 | } |
534 | } |
… | |
… | |
477 | #if !PERL_VERSION_ATLEAST (5,9,0) |
540 | #if !PERL_VERSION_ATLEAST (5,9,0) |
478 | Safefree (PL_retstack); |
541 | Safefree (PL_retstack); |
479 | #endif |
542 | #endif |
480 | } |
543 | } |
481 | |
544 | |
|
|
545 | static size_t |
|
|
546 | coro_rss (struct coro *coro) |
|
|
547 | { |
|
|
548 | size_t rss = sizeof (coro); |
|
|
549 | |
|
|
550 | if (coro->mainstack) |
|
|
551 | { |
|
|
552 | if (coro->flags & CF_RUNNING) |
|
|
553 | { |
|
|
554 | #define VAR(name,type)coro->name = PL_ ## name; |
|
|
555 | # include "state.h" |
|
|
556 | #undef VAR |
|
|
557 | } |
|
|
558 | |
|
|
559 | rss += sizeof (coro->curstackinfo); |
|
|
560 | rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); |
|
|
561 | rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
|
|
562 | rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); |
|
|
563 | rss += coro->tmps_max * sizeof (SV *); |
|
|
564 | rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); |
|
|
565 | rss += coro->scopestack_max * sizeof (I32); |
|
|
566 | rss += coro->savestack_max * sizeof (ANY); |
|
|
567 | |
|
|
568 | #if !PERL_VERSION_ATLEAST (5,9,0) |
|
|
569 | rss += coro->retstack_max * sizeof (OP *); |
|
|
570 | #endif |
|
|
571 | } |
|
|
572 | |
|
|
573 | return rss; |
|
|
574 | } |
|
|
575 | |
|
|
576 | /** coroutine stack handling ************************************************/ |
|
|
577 | |
482 | static void |
578 | static void |
483 | setup_coro (struct coro *coro) |
579 | setup_coro (pTHX_ struct coro *coro) |
484 | { |
580 | { |
485 | /* |
581 | /* |
486 | * emulate part of the perl startup here. |
582 | * emulate part of the perl startup here. |
487 | */ |
583 | */ |
488 | |
|
|
489 | coro_init_stacks (); |
584 | coro_init_stacks (aTHX); |
490 | |
585 | |
491 | PL_curcop = &PL_compiling; |
586 | PL_curcop = &PL_compiling; |
492 | PL_in_eval = EVAL_NULL; |
587 | PL_in_eval = EVAL_NULL; |
|
|
588 | PL_comppad = 0; |
493 | PL_curpm = 0; |
589 | PL_curpm = 0; |
494 | PL_localizing = 0; |
590 | PL_localizing = 0; |
495 | PL_dirty = 0; |
591 | PL_dirty = 0; |
496 | PL_restartop = 0; |
592 | PL_restartop = 0; |
497 | |
593 | |
498 | { |
594 | { |
499 | dSP; |
595 | dSP; |
500 | LOGOP myop; |
596 | LOGOP myop; |
501 | |
597 | |
502 | /* I have no idea why this is needed, but it is */ |
|
|
503 | PUSHMARK (SP); |
|
|
504 | |
|
|
505 | SvREFCNT_dec (GvAV (PL_defgv)); |
598 | SvREFCNT_dec (GvAV (PL_defgv)); |
506 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
599 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
507 | |
600 | |
508 | Zero (&myop, 1, LOGOP); |
601 | Zero (&myop, 1, LOGOP); |
509 | myop.op_next = Nullop; |
602 | myop.op_next = Nullop; |
510 | myop.op_flags = OPf_WANT_VOID; |
603 | myop.op_flags = OPf_WANT_VOID; |
511 | |
604 | |
|
|
605 | PUSHMARK (SP); |
|
|
606 | XPUSHs (av_shift (GvAV (PL_defgv))); |
|
|
607 | PUTBACK; |
512 | PL_op = (OP *)&myop; |
608 | PL_op = (OP *)&myop; |
513 | |
|
|
514 | PUSHMARK (SP); |
|
|
515 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
|
|
516 | PUTBACK; |
|
|
517 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
609 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
518 | SPAGAIN; |
610 | SPAGAIN; |
519 | } |
611 | } |
520 | |
612 | |
521 | ENTER; /* necessary e.g. for dounwind */ |
613 | ENTER; /* necessary e.g. for dounwind */ |
522 | } |
614 | } |
523 | |
615 | |
524 | static void |
616 | static void |
525 | free_coro_mortal () |
617 | free_coro_mortal (pTHX) |
526 | { |
618 | { |
527 | if (coro_mortal) |
619 | if (coro_mortal) |
528 | { |
620 | { |
529 | SvREFCNT_dec (coro_mortal); |
621 | SvREFCNT_dec (coro_mortal); |
530 | coro_mortal = 0; |
622 | coro_mortal = 0; |
531 | } |
623 | } |
532 | } |
624 | } |
533 | |
625 | |
|
|
626 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
|
|
627 | /* _cctx_init should be careful, as it could be called at almost any time */ |
|
|
628 | /* during execution of a perl program */ |
534 | static void NOINLINE |
629 | static void NOINLINE |
535 | prepare_cctx (coro_cctx *cctx) |
630 | prepare_cctx (pTHX_ coro_cctx *cctx) |
536 | { |
631 | { |
537 | dSP; |
632 | dSP; |
538 | LOGOP myop; |
633 | LOGOP myop; |
539 | |
634 | |
540 | Zero (&myop, 1, LOGOP); |
635 | Zero (&myop, 1, LOGOP); |
541 | myop.op_next = PL_op; |
636 | myop.op_next = PL_op; |
542 | myop.op_flags = OPf_WANT_VOID; |
637 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
543 | |
|
|
544 | sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx)); |
|
|
545 | |
638 | |
546 | PUSHMARK (SP); |
639 | PUSHMARK (SP); |
|
|
640 | EXTEND (SP, 2); |
|
|
641 | PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
547 | XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
642 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
548 | PUTBACK; |
643 | PUTBACK; |
|
|
644 | PL_op = (OP *)&myop; |
549 | PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); |
645 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
550 | SPAGAIN; |
646 | SPAGAIN; |
551 | } |
647 | } |
552 | |
648 | |
|
|
649 | /* |
|
|
650 | * this is a _very_ stripped down perl interpreter ;) |
|
|
651 | */ |
553 | static void |
652 | static void |
554 | coro_run (void *arg) |
653 | coro_run (void *arg) |
555 | { |
654 | { |
|
|
655 | dTHX; |
|
|
656 | |
556 | /* coro_run is the alternative epilogue of transfer() */ |
657 | /* coro_run is the alternative tail of transfer(), so unlock here. */ |
557 | UNLOCK; |
658 | UNLOCK; |
558 | |
659 | |
|
|
660 | PL_top_env = &PL_start_env; |
|
|
661 | |
|
|
662 | /* inject a fake subroutine call to cctx_init */ |
|
|
663 | prepare_cctx (aTHX_ (coro_cctx *)arg); |
|
|
664 | |
|
|
665 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
|
|
666 | PL_restartop = PL_op; |
|
|
667 | perl_run (PL_curinterp); |
|
|
668 | |
559 | /* |
669 | /* |
560 | * this is a _very_ stripped down perl interpreter ;) |
670 | * If perl-run returns we assume exit() was being called or the coro |
|
|
671 | * fell off the end, which seems to be the only valid (non-bug) |
|
|
672 | * reason for perl_run to return. We try to exit by jumping to the |
|
|
673 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
|
|
674 | * coroutine as Coro has no such concept |
561 | */ |
675 | */ |
562 | PL_top_env = &PL_start_env; |
676 | PL_top_env = main_top_env; |
563 | |
677 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
564 | /* inject call to cctx_init */ |
|
|
565 | prepare_cctx ((coro_cctx *)arg); |
|
|
566 | |
|
|
567 | /* somebody will hit me for both perl_run and PL_restartop */ |
|
|
568 | perl_run (PL_curinterp); |
|
|
569 | |
|
|
570 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
|
|
571 | abort (); |
|
|
572 | } |
678 | } |
573 | |
679 | |
574 | static coro_cctx * |
680 | static coro_cctx * |
575 | cctx_new () |
681 | cctx_new () |
576 | { |
682 | { |
577 | coro_cctx *cctx; |
683 | coro_cctx *cctx; |
|
|
684 | void *stack_start; |
|
|
685 | size_t stack_size; |
578 | |
686 | |
579 | ++cctx_count; |
687 | ++cctx_count; |
580 | |
688 | |
581 | New (0, cctx, 1, coro_cctx); |
689 | Newz (0, cctx, 1, coro_cctx); |
582 | |
690 | |
583 | #if HAVE_MMAP |
691 | #if HAVE_MMAP |
584 | |
692 | |
585 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
693 | cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
586 | /* mmap suppsedly does allocate-on-write for us */ |
694 | /* mmap supposedly does allocate-on-write for us */ |
587 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
695 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
588 | |
696 | |
589 | if (cctx->sptr == (void *)-1) |
697 | if (cctx->sptr != (void *)-1) |
590 | { |
|
|
591 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
592 | _exit (EXIT_FAILURE); |
|
|
593 | } |
698 | { |
594 | |
|
|
595 | # if STACKGUARD |
699 | # if CORO_STACKGUARD |
596 | mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
700 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
597 | # endif |
701 | # endif |
|
|
702 | stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
|
|
703 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
704 | cctx->mapped = 1; |
|
|
705 | } |
|
|
706 | else |
|
|
707 | #endif |
|
|
708 | { |
|
|
709 | cctx->ssize = coro_stacksize * (long)sizeof (long); |
|
|
710 | New (0, cctx->sptr, coro_stacksize, long); |
598 | |
711 | |
599 | #else |
|
|
600 | |
|
|
601 | cctx->ssize = STACKSIZE * (long)sizeof (long); |
|
|
602 | New (0, cctx->sptr, STACKSIZE, long); |
|
|
603 | |
|
|
604 | if (!cctx->sptr) |
712 | if (!cctx->sptr) |
605 | { |
713 | { |
606 | perror ("FATAL: unable to malloc stack for coroutine"); |
714 | perror ("FATAL: unable to allocate stack for coroutine"); |
607 | _exit (EXIT_FAILURE); |
715 | _exit (EXIT_FAILURE); |
608 | } |
716 | } |
609 | |
717 | |
610 | #endif |
718 | stack_start = cctx->sptr; |
|
|
719 | stack_size = cctx->ssize; |
|
|
720 | } |
611 | |
721 | |
612 | #if USE_VALGRIND |
722 | REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
613 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ( |
|
|
614 | STACKGUARD * PAGESIZE + (char *)cctx->sptr, |
|
|
615 | cctx->ssize + (char *)cctx->sptr |
|
|
616 | ); |
|
|
617 | #endif |
|
|
618 | |
|
|
619 | coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize); |
723 | coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); |
620 | |
724 | |
621 | return cctx; |
725 | return cctx; |
622 | } |
726 | } |
623 | |
727 | |
624 | static void |
728 | static void |
… | |
… | |
627 | if (!cctx) |
731 | if (!cctx) |
628 | return; |
732 | return; |
629 | |
733 | |
630 | --cctx_count; |
734 | --cctx_count; |
631 | |
735 | |
632 | #if USE_VALGRIND |
736 | #if CORO_USE_VALGRIND |
633 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
737 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
634 | #endif |
738 | #endif |
635 | |
739 | |
636 | #if HAVE_MMAP |
740 | #if HAVE_MMAP |
|
|
741 | if (cctx->mapped) |
637 | munmap (cctx->sptr, cctx->ssize); |
742 | munmap (cctx->sptr, cctx->ssize); |
638 | #else |
743 | else |
|
|
744 | #endif |
639 | Safefree (cctx->sptr); |
745 | Safefree (cctx->sptr); |
640 | #endif |
|
|
641 | |
746 | |
642 | Safefree (cctx); |
747 | Safefree (cctx); |
643 | } |
748 | } |
644 | |
749 | |
645 | static coro_cctx * |
750 | static coro_cctx * |
646 | cctx_get () |
751 | cctx_get (pTHX) |
647 | { |
752 | { |
648 | coro_cctx *cctx; |
|
|
649 | |
|
|
650 | if (cctx_first) |
753 | while (cctx_first) |
651 | { |
754 | { |
652 | cctx = cctx_first; |
755 | coro_cctx *cctx = cctx_first; |
653 | cctx_first = cctx->next; |
756 | cctx_first = cctx->next; |
654 | --cctx_idle; |
757 | --cctx_idle; |
|
|
758 | |
|
|
759 | if (cctx->ssize >= coro_stacksize) |
|
|
760 | return cctx; |
|
|
761 | |
|
|
762 | cctx_destroy (cctx); |
655 | } |
763 | } |
656 | else |
764 | |
657 | { |
|
|
658 | cctx = cctx_new (); |
|
|
659 | PL_op = PL_op->op_next; |
765 | PL_op = PL_op->op_next; |
660 | } |
|
|
661 | |
|
|
662 | return cctx; |
766 | return cctx_new (); |
663 | } |
767 | } |
664 | |
768 | |
665 | static void |
769 | static void |
666 | cctx_put (coro_cctx *cctx) |
770 | cctx_put (coro_cctx *cctx) |
667 | { |
771 | { |
… | |
… | |
679 | ++cctx_idle; |
783 | ++cctx_idle; |
680 | cctx->next = cctx_first; |
784 | cctx->next = cctx_first; |
681 | cctx_first = cctx; |
785 | cctx_first = cctx; |
682 | } |
786 | } |
683 | |
787 | |
|
|
788 | /** coroutine switching *****************************************************/ |
|
|
789 | |
684 | /* never call directly, always through the coro_state_transfer global variable */ |
790 | /* never call directly, always through the coro_state_transfer global variable */ |
685 | static void NOINLINE |
791 | static void NOINLINE |
686 | transfer (struct coro *prev, struct coro *next, int flags) |
792 | transfer (pTHX_ struct coro *prev, struct coro *next) |
687 | { |
793 | { |
688 | dSTACKLEVEL; |
794 | dSTACKLEVEL; |
689 | |
795 | |
690 | /* sometimes transfer is only called to set idle_sp */ |
796 | /* sometimes transfer is only called to set idle_sp */ |
691 | if (flags == TRANSFER_SET_STACKLEVEL) |
797 | if (!next) |
|
|
798 | { |
692 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
799 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
800 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
801 | } |
693 | else if (prev != next) |
802 | else if (prev != next) |
694 | { |
803 | { |
695 | coro_cctx *prev__cctx; |
804 | coro_cctx *prev__cctx; |
696 | |
805 | |
697 | if (prev->flags & CF_NEW) |
806 | if (prev->flags & CF_NEW) |
… | |
… | |
708 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
817 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
709 | |
818 | |
710 | if (next->flags & CF_RUNNING) |
819 | if (next->flags & CF_RUNNING) |
711 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
820 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
712 | |
821 | |
|
|
822 | if (next->flags & CF_DESTROYED) |
|
|
823 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
|
|
824 | |
713 | prev->flags &= ~CF_RUNNING; |
825 | prev->flags &= ~CF_RUNNING; |
714 | next->flags |= CF_RUNNING; |
826 | next->flags |= CF_RUNNING; |
715 | |
827 | |
716 | LOCK; |
828 | LOCK; |
717 | |
829 | |
718 | if (next->mainstack) |
830 | if (next->flags & CF_NEW) |
719 | { |
831 | { |
720 | /* coroutine already started */ |
832 | /* need to start coroutine */ |
721 | SAVE (prev, flags); |
833 | next->flags &= ~CF_NEW; |
722 | LOAD (next); |
834 | /* first get rid of the old state */ |
|
|
835 | save_perl (aTHX_ prev); |
|
|
836 | /* setup coroutine call */ |
|
|
837 | setup_coro (aTHX_ next); |
|
|
838 | /* need a new stack */ |
|
|
839 | assert (!next->cctx); |
723 | } |
840 | } |
724 | else |
841 | else |
725 | { |
842 | { |
726 | /* need to start coroutine */ |
843 | /* coroutine already started */ |
727 | assert (next->flags & CF_NEW); |
844 | save_perl (aTHX_ prev); |
728 | next->flags &= ~CF_NEW; |
845 | load_perl (aTHX_ next); |
729 | /* first get rid of the old state */ |
|
|
730 | SAVE (prev, -1); |
|
|
731 | /* setup coroutine call */ |
|
|
732 | setup_coro (next); |
|
|
733 | /* need a new stack */ |
|
|
734 | assert (!next->stack); |
|
|
735 | } |
846 | } |
736 | |
847 | |
737 | prev__cctx = prev->cctx; |
848 | prev__cctx = prev->cctx; |
738 | |
849 | |
739 | /* possibly "free" the cctx */ |
850 | /* possibly "free" the cctx */ |
740 | if (prev__cctx->idle_sp == STACKLEVEL && 0) |
851 | if (prev__cctx->idle_sp == STACKLEVEL) |
741 | { |
852 | { |
742 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
853 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
743 | assert (PL_top_env == prev__cctx->top_env); |
854 | assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
744 | |
855 | |
745 | prev->cctx = 0; |
856 | prev->cctx = 0; |
746 | |
857 | |
747 | cctx_put (prev__cctx); |
858 | cctx_put (prev__cctx); |
748 | prev__cctx->inuse = 0; |
859 | prev__cctx->inuse = 0; |
749 | } |
860 | } |
750 | |
861 | |
751 | if (!next->cctx) |
862 | if (!next->cctx) |
752 | { |
863 | { |
753 | next->cctx = cctx_get (); |
864 | next->cctx = cctx_get (aTHX); |
754 | assert (!next->cctx->inuse); |
865 | assert (!next->cctx->inuse); |
755 | next->cctx->inuse = 1; |
866 | next->cctx->inuse = 1; |
756 | } |
867 | } |
757 | |
868 | |
758 | if (prev__cctx != next->cctx) |
869 | if (prev__cctx != next->cctx) |
… | |
… | |
760 | prev__cctx->top_env = PL_top_env; |
871 | prev__cctx->top_env = PL_top_env; |
761 | PL_top_env = next->cctx->top_env; |
872 | PL_top_env = next->cctx->top_env; |
762 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
873 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
763 | } |
874 | } |
764 | |
875 | |
765 | free_coro_mortal (); |
876 | free_coro_mortal (aTHX); |
766 | |
|
|
767 | UNLOCK; |
877 | UNLOCK; |
768 | } |
878 | } |
769 | } |
879 | } |
770 | |
880 | |
771 | struct transfer_args |
881 | struct transfer_args |
772 | { |
882 | { |
773 | struct coro *prev, *next; |
883 | struct coro *prev, *next; |
774 | int flags; |
|
|
775 | }; |
884 | }; |
776 | |
885 | |
777 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
886 | #define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) |
778 | |
887 | |
|
|
888 | /** high level stuff ********************************************************/ |
|
|
889 | |
779 | static void |
890 | static int |
780 | coro_state_destroy (struct coro *coro) |
891 | coro_state_destroy (pTHX_ struct coro *coro) |
781 | { |
892 | { |
782 | if (coro->refcnt--) |
893 | if (coro->flags & CF_DESTROYED) |
783 | return; |
894 | return 0; |
|
|
895 | |
|
|
896 | coro->flags |= CF_DESTROYED; |
|
|
897 | |
|
|
898 | if (coro->flags & CF_READY) |
|
|
899 | { |
|
|
900 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
901 | /* alternative: look through all ready queues and remove the coro */ |
|
|
902 | LOCK; |
|
|
903 | --coro_nready; |
|
|
904 | UNLOCK; |
|
|
905 | } |
|
|
906 | else |
|
|
907 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
784 | |
908 | |
785 | if (coro->mainstack && coro->mainstack != main_mainstack) |
909 | if (coro->mainstack && coro->mainstack != main_mainstack) |
786 | { |
910 | { |
787 | struct coro temp; |
911 | struct coro temp; |
|
|
912 | |
|
|
913 | assert (!(coro->flags & CF_RUNNING)); |
|
|
914 | |
|
|
915 | Zero (&temp, 1, struct coro); |
|
|
916 | temp.save = CORO_SAVE_ALL; |
788 | |
917 | |
789 | if (coro->flags & CF_RUNNING) |
918 | if (coro->flags & CF_RUNNING) |
790 | croak ("FATAL: tried to destroy currently running coroutine"); |
919 | croak ("FATAL: tried to destroy currently running coroutine"); |
791 | |
920 | |
792 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
921 | save_perl (aTHX_ &temp); |
793 | LOAD (coro); |
922 | load_perl (aTHX_ coro); |
794 | |
923 | |
795 | coro_destroy_stacks (); |
924 | coro_destroy_stacks (aTHX); |
796 | |
925 | |
797 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
926 | load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ |
798 | |
927 | |
799 | coro->mainstack = 0; |
928 | coro->mainstack = 0; |
800 | } |
929 | } |
801 | |
930 | |
802 | cctx_destroy (coro->cctx); |
931 | cctx_destroy (coro->cctx); |
803 | SvREFCNT_dec (coro->args); |
932 | SvREFCNT_dec (coro->args); |
804 | Safefree (coro); |
933 | |
|
|
934 | if (coro->next) coro->next->prev = coro->prev; |
|
|
935 | if (coro->prev) coro->prev->next = coro->next; |
|
|
936 | if (coro == coro_first) coro_first = coro->next; |
|
|
937 | |
|
|
938 | return 1; |
805 | } |
939 | } |
806 | |
940 | |
807 | static int |
941 | static int |
808 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
942 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
809 | { |
943 | { |
810 | struct coro *coro = (struct coro *)mg->mg_ptr; |
944 | struct coro *coro = (struct coro *)mg->mg_ptr; |
811 | mg->mg_ptr = 0; |
945 | mg->mg_ptr = 0; |
812 | |
946 | |
|
|
947 | coro->hv = 0; |
|
|
948 | |
|
|
949 | if (--coro->refcnt < 0) |
|
|
950 | { |
813 | coro_state_destroy (coro); |
951 | coro_state_destroy (aTHX_ coro); |
|
|
952 | Safefree (coro); |
|
|
953 | } |
814 | |
954 | |
815 | return 0; |
955 | return 0; |
816 | } |
956 | } |
817 | |
957 | |
818 | static int |
958 | static int |
… | |
… | |
825 | return 0; |
965 | return 0; |
826 | } |
966 | } |
827 | |
967 | |
828 | static MGVTBL coro_state_vtbl = { |
968 | static MGVTBL coro_state_vtbl = { |
829 | 0, 0, 0, 0, |
969 | 0, 0, 0, 0, |
830 | coro_state_clear, |
970 | coro_state_free, |
831 | 0, |
971 | 0, |
832 | #ifdef MGf_DUP |
972 | #ifdef MGf_DUP |
833 | coro_state_dup, |
973 | coro_state_dup, |
834 | #else |
974 | #else |
835 | # define MGf_DUP 0 |
975 | # define MGf_DUP 0 |
836 | #endif |
976 | #endif |
837 | }; |
977 | }; |
838 | |
978 | |
839 | static struct coro * |
979 | static struct coro * |
840 | SvSTATE (SV *coro) |
980 | SvSTATE_ (pTHX_ SV *coro) |
841 | { |
981 | { |
842 | HV *stash; |
982 | HV *stash; |
843 | MAGIC *mg; |
983 | MAGIC *mg; |
844 | |
984 | |
845 | if (SvROK (coro)) |
985 | if (SvROK (coro)) |
… | |
… | |
851 | /* very slow, but rare, check */ |
991 | /* very slow, but rare, check */ |
852 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
992 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
853 | croak ("Coro::State object required"); |
993 | croak ("Coro::State object required"); |
854 | } |
994 | } |
855 | |
995 | |
856 | mg = SvMAGIC (coro); |
996 | mg = CORO_MAGIC (coro); |
857 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
858 | return (struct coro *)mg->mg_ptr; |
997 | return (struct coro *)mg->mg_ptr; |
859 | } |
998 | } |
860 | |
999 | |
|
|
1000 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
|
|
1001 | |
861 | static void |
1002 | static void |
862 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
1003 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
863 | { |
1004 | { |
864 | ta->prev = SvSTATE (prev); |
1005 | ta->prev = SvSTATE (prev_sv); |
865 | ta->next = SvSTATE (next); |
1006 | ta->next = SvSTATE (next_sv); |
866 | ta->flags = flags; |
|
|
867 | } |
1007 | } |
868 | |
1008 | |
869 | static void |
1009 | static void |
870 | api_transfer (SV *prev, SV *next, int flags) |
1010 | api_transfer (SV *prev_sv, SV *next_sv) |
871 | { |
1011 | { |
|
|
1012 | dTHX; |
872 | struct transfer_args ta; |
1013 | struct transfer_args ta; |
873 | |
1014 | |
874 | prepare_transfer (&ta, prev, next, flags); |
1015 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
875 | TRANSFER (ta); |
1016 | TRANSFER (ta); |
876 | } |
1017 | } |
877 | |
1018 | |
|
|
1019 | static int |
|
|
1020 | api_save (SV *coro_sv, int new_save) |
|
|
1021 | { |
|
|
1022 | dTHX; |
|
|
1023 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1024 | int old_save = coro->save; |
|
|
1025 | |
|
|
1026 | if (new_save >= 0) |
|
|
1027 | coro->save = new_save; |
|
|
1028 | |
|
|
1029 | return old_save; |
|
|
1030 | } |
|
|
1031 | |
878 | /** Coro ********************************************************************/ |
1032 | /** Coro ********************************************************************/ |
879 | |
1033 | |
880 | #define PRIO_MAX 3 |
|
|
881 | #define PRIO_HIGH 1 |
|
|
882 | #define PRIO_NORMAL 0 |
|
|
883 | #define PRIO_LOW -1 |
|
|
884 | #define PRIO_IDLE -3 |
|
|
885 | #define PRIO_MIN -4 |
|
|
886 | |
|
|
887 | /* for Coro.pm */ |
|
|
888 | static SV *coro_current; |
|
|
889 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
|
|
890 | static int coro_nready; |
|
|
891 | |
|
|
892 | static void |
1034 | static void |
893 | coro_enq (SV *coro_sv) |
1035 | coro_enq (pTHX_ SV *coro_sv) |
894 | { |
1036 | { |
895 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
1037 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
896 | coro_nready++; |
|
|
897 | } |
1038 | } |
898 | |
1039 | |
899 | static SV * |
1040 | static SV * |
900 | coro_deq (int min_prio) |
1041 | coro_deq (pTHX_ int min_prio) |
901 | { |
1042 | { |
902 | int prio = PRIO_MAX - PRIO_MIN; |
1043 | int prio = PRIO_MAX - PRIO_MIN; |
903 | |
1044 | |
904 | min_prio -= PRIO_MIN; |
1045 | min_prio -= PRIO_MIN; |
905 | if (min_prio < 0) |
1046 | if (min_prio < 0) |
906 | min_prio = 0; |
1047 | min_prio = 0; |
907 | |
1048 | |
908 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
1049 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
909 | if (AvFILLp (coro_ready [prio]) >= 0) |
1050 | if (AvFILLp (coro_ready [prio]) >= 0) |
910 | { |
|
|
911 | coro_nready--; |
|
|
912 | return av_shift (coro_ready [prio]); |
1051 | return av_shift (coro_ready [prio]); |
913 | } |
|
|
914 | |
1052 | |
915 | return 0; |
1053 | return 0; |
916 | } |
1054 | } |
917 | |
1055 | |
918 | static int |
1056 | static int |
919 | api_ready (SV *coro_sv) |
1057 | api_ready (SV *coro_sv) |
920 | { |
1058 | { |
|
|
1059 | dTHX; |
921 | struct coro *coro; |
1060 | struct coro *coro; |
922 | |
1061 | |
923 | if (SvROK (coro_sv)) |
1062 | if (SvROK (coro_sv)) |
924 | coro_sv = SvRV (coro_sv); |
1063 | coro_sv = SvRV (coro_sv); |
925 | |
1064 | |
926 | coro = SvSTATE (coro_sv); |
1065 | coro = SvSTATE (coro_sv); |
927 | |
1066 | |
928 | if (coro->flags & CF_READY) |
1067 | if (coro->flags & CF_READY) |
929 | return 0; |
1068 | return 0; |
930 | |
1069 | |
931 | #if 0 /* this is actually harmless */ |
|
|
932 | if (coro->flags & CF_RUNNING) |
|
|
933 | croak ("Coro::ready called on currently running coroutine"); |
|
|
934 | #endif |
|
|
935 | |
|
|
936 | coro->flags |= CF_READY; |
1070 | coro->flags |= CF_READY; |
937 | |
1071 | |
938 | LOCK; |
1072 | LOCK; |
939 | coro_enq (SvREFCNT_inc (coro_sv)); |
1073 | coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); |
|
|
1074 | ++coro_nready; |
940 | UNLOCK; |
1075 | UNLOCK; |
941 | |
1076 | |
942 | return 1; |
1077 | return 1; |
943 | } |
1078 | } |
944 | |
1079 | |
945 | static int |
1080 | static int |
946 | api_is_ready (SV *coro_sv) |
1081 | api_is_ready (SV *coro_sv) |
947 | { |
1082 | { |
|
|
1083 | dTHX; |
948 | return !!SvSTATE (coro_sv)->flags & CF_READY; |
1084 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
949 | } |
1085 | } |
950 | |
1086 | |
951 | static void |
1087 | static void |
952 | prepare_schedule (struct transfer_args *ta) |
1088 | prepare_schedule (pTHX_ struct transfer_args *ta) |
953 | { |
1089 | { |
954 | SV *prev, *next; |
1090 | SV *prev_sv, *next_sv; |
955 | |
1091 | |
956 | for (;;) |
1092 | for (;;) |
957 | { |
1093 | { |
958 | LOCK; |
1094 | LOCK; |
959 | next = coro_deq (PRIO_MIN); |
1095 | next_sv = coro_deq (aTHX_ PRIO_MIN); |
|
|
1096 | |
|
|
1097 | /* nothing to schedule: call the idle handler */ |
|
|
1098 | if (!next_sv) |
|
|
1099 | { |
|
|
1100 | dSP; |
|
|
1101 | UNLOCK; |
|
|
1102 | |
|
|
1103 | ENTER; |
|
|
1104 | SAVETMPS; |
|
|
1105 | |
|
|
1106 | PUSHMARK (SP); |
|
|
1107 | PUTBACK; |
|
|
1108 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
|
|
1109 | |
|
|
1110 | FREETMPS; |
|
|
1111 | LEAVE; |
|
|
1112 | continue; |
|
|
1113 | } |
|
|
1114 | |
|
|
1115 | ta->next = SvSTATE (next_sv); |
|
|
1116 | |
|
|
1117 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1118 | if (ta->next->flags & CF_DESTROYED) |
|
|
1119 | { |
|
|
1120 | UNLOCK; |
|
|
1121 | SvREFCNT_dec (next_sv); |
|
|
1122 | /* coro_nready is already taken care of by destroy */ |
|
|
1123 | continue; |
|
|
1124 | } |
|
|
1125 | |
|
|
1126 | --coro_nready; |
960 | UNLOCK; |
1127 | UNLOCK; |
961 | |
|
|
962 | if (next) |
|
|
963 | break; |
1128 | break; |
964 | |
|
|
965 | { |
|
|
966 | dSP; |
|
|
967 | |
|
|
968 | ENTER; |
|
|
969 | SAVETMPS; |
|
|
970 | |
|
|
971 | PUSHMARK (SP); |
|
|
972 | PUTBACK; |
|
|
973 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
|
|
974 | |
|
|
975 | FREETMPS; |
|
|
976 | LEAVE; |
|
|
977 | } |
1129 | } |
978 | } |
|
|
979 | |
|
|
980 | prev = SvRV (coro_current); |
|
|
981 | SvRV_set (coro_current, next); |
|
|
982 | |
1130 | |
983 | /* free this only after the transfer */ |
1131 | /* free this only after the transfer */ |
|
|
1132 | prev_sv = SvRV (coro_current); |
|
|
1133 | SvRV_set (coro_current, next_sv); |
|
|
1134 | ta->prev = SvSTATE (prev_sv); |
|
|
1135 | |
|
|
1136 | assert (ta->next->flags & CF_READY); |
|
|
1137 | ta->next->flags &= ~CF_READY; |
|
|
1138 | |
984 | LOCK; |
1139 | LOCK; |
985 | free_coro_mortal (); |
1140 | free_coro_mortal (aTHX); |
|
|
1141 | coro_mortal = prev_sv; |
986 | UNLOCK; |
1142 | UNLOCK; |
987 | coro_mortal = prev; |
|
|
988 | |
|
|
989 | assert (!SvROK(prev));//D |
|
|
990 | assert (!SvROK(next));//D |
|
|
991 | |
|
|
992 | ta->prev = SvSTATE (prev); |
|
|
993 | ta->next = SvSTATE (next); |
|
|
994 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
995 | |
|
|
996 | assert (ta->flags & CF_READY); |
|
|
997 | ta->next->flags &= ~CF_READY; |
|
|
998 | } |
1143 | } |
999 | |
1144 | |
1000 | static void |
1145 | static void |
1001 | prepare_cede (struct transfer_args *ta) |
1146 | prepare_cede (pTHX_ struct transfer_args *ta) |
1002 | { |
1147 | { |
1003 | api_ready (coro_current); |
1148 | api_ready (coro_current); |
1004 | |
|
|
1005 | prepare_schedule (ta); |
1149 | prepare_schedule (aTHX_ ta); |
|
|
1150 | } |
|
|
1151 | |
|
|
1152 | static int |
|
|
1153 | prepare_cede_notself (pTHX_ struct transfer_args *ta) |
|
|
1154 | { |
|
|
1155 | if (coro_nready) |
|
|
1156 | { |
|
|
1157 | SV *prev = SvRV (coro_current); |
|
|
1158 | prepare_schedule (aTHX_ ta); |
|
|
1159 | api_ready (prev); |
|
|
1160 | return 1; |
|
|
1161 | } |
|
|
1162 | else |
|
|
1163 | return 0; |
1006 | } |
1164 | } |
1007 | |
1165 | |
1008 | static void |
1166 | static void |
1009 | api_schedule (void) |
1167 | api_schedule (void) |
1010 | { |
1168 | { |
|
|
1169 | dTHX; |
1011 | struct transfer_args ta; |
1170 | struct transfer_args ta; |
1012 | |
1171 | |
1013 | prepare_schedule (&ta); |
1172 | prepare_schedule (aTHX_ &ta); |
1014 | TRANSFER (ta); |
1173 | TRANSFER (ta); |
1015 | } |
1174 | } |
1016 | |
1175 | |
1017 | static void |
1176 | static int |
1018 | api_cede (void) |
1177 | api_cede (void) |
1019 | { |
1178 | { |
|
|
1179 | dTHX; |
1020 | struct transfer_args ta; |
1180 | struct transfer_args ta; |
1021 | |
1181 | |
1022 | prepare_cede (&ta); |
1182 | prepare_cede (aTHX_ &ta); |
|
|
1183 | |
|
|
1184 | if (ta.prev != ta.next) |
|
|
1185 | { |
1023 | TRANSFER (ta); |
1186 | TRANSFER (ta); |
|
|
1187 | return 1; |
|
|
1188 | } |
|
|
1189 | else |
|
|
1190 | return 0; |
|
|
1191 | } |
|
|
1192 | |
|
|
1193 | static int |
|
|
1194 | api_cede_notself (void) |
|
|
1195 | { |
|
|
1196 | dTHX; |
|
|
1197 | struct transfer_args ta; |
|
|
1198 | |
|
|
1199 | if (prepare_cede_notself (aTHX_ &ta)) |
|
|
1200 | { |
|
|
1201 | TRANSFER (ta); |
|
|
1202 | return 1; |
|
|
1203 | } |
|
|
1204 | else |
|
|
1205 | return 0; |
1024 | } |
1206 | } |
1025 | |
1207 | |
1026 | MODULE = Coro::State PACKAGE = Coro::State |
1208 | MODULE = Coro::State PACKAGE = Coro::State |
1027 | |
1209 | |
1028 | PROTOTYPES: DISABLE |
1210 | PROTOTYPES: DISABLE |
… | |
… | |
1034 | #endif |
1216 | #endif |
1035 | BOOT_PAGESIZE; |
1217 | BOOT_PAGESIZE; |
1036 | |
1218 | |
1037 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1219 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1038 | |
1220 | |
1039 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1221 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
1040 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1222 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
1041 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1223 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
|
|
1224 | newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
|
|
1225 | newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH)); |
|
|
1226 | newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); |
|
|
1227 | newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
1042 | |
1228 | |
1043 | main_mainstack = PL_mainstack; |
1229 | main_mainstack = PL_mainstack; |
|
|
1230 | main_top_env = PL_top_env; |
|
|
1231 | |
|
|
1232 | while (main_top_env->je_prev) |
|
|
1233 | main_top_env = main_top_env->je_prev; |
1044 | |
1234 | |
1045 | coroapi.ver = CORO_API_VERSION; |
1235 | coroapi.ver = CORO_API_VERSION; |
1046 | coroapi.transfer = api_transfer; |
1236 | coroapi.transfer = api_transfer; |
1047 | |
1237 | |
1048 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1238 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
… | |
… | |
1056 | HV *hv; |
1246 | HV *hv; |
1057 | int i; |
1247 | int i; |
1058 | |
1248 | |
1059 | Newz (0, coro, 1, struct coro); |
1249 | Newz (0, coro, 1, struct coro); |
1060 | coro->args = newAV (); |
1250 | coro->args = newAV (); |
|
|
1251 | coro->save = CORO_SAVE_DEF; |
1061 | coro->flags = CF_NEW; |
1252 | coro->flags = CF_NEW; |
1062 | |
1253 | |
|
|
1254 | if (coro_first) coro_first->prev = coro; |
|
|
1255 | coro->next = coro_first; |
|
|
1256 | coro_first = coro; |
|
|
1257 | |
1063 | hv = newHV (); |
1258 | coro->hv = hv = newHV (); |
1064 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1259 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1065 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1260 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1066 | |
1261 | |
1067 | for (i = 1; i < items; i++) |
1262 | for (i = 1; i < items; i++) |
1068 | av_push (coro->args, newSVsv (ST (i))); |
1263 | av_push (coro->args, newSVsv (ST (i))); |
1069 | } |
1264 | } |
1070 | OUTPUT: |
1265 | OUTPUT: |
|
|
1266 | RETVAL |
|
|
1267 | |
|
|
1268 | int |
|
|
1269 | save (SV *coro, int new_save = -1) |
|
|
1270 | CODE: |
|
|
1271 | RETVAL = api_save (coro, new_save); |
|
|
1272 | OUTPUT: |
|
|
1273 | RETVAL |
|
|
1274 | |
|
|
1275 | int |
|
|
1276 | save_also (SV *coro_sv, int save_also) |
|
|
1277 | CODE: |
|
|
1278 | { |
|
|
1279 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1280 | RETVAL = coro->save; |
|
|
1281 | coro->save |= save_also; |
|
|
1282 | } |
|
|
1283 | OUTPUT: |
1071 | RETVAL |
1284 | RETVAL |
1072 | |
1285 | |
1073 | void |
1286 | void |
1074 | _set_stacklevel (...) |
1287 | _set_stacklevel (...) |
1075 | ALIAS: |
1288 | ALIAS: |
1076 | Coro::State::transfer = 1 |
1289 | Coro::State::transfer = 1 |
1077 | Coro::schedule = 2 |
1290 | Coro::schedule = 2 |
1078 | Coro::cede = 3 |
1291 | Coro::cede = 3 |
1079 | Coro::Cont::yield = 4 |
1292 | Coro::cede_notself = 4 |
1080 | CODE: |
1293 | CODE: |
1081 | { |
1294 | { |
1082 | struct transfer_args ta; |
1295 | struct transfer_args ta; |
1083 | |
1296 | |
1084 | switch (ix) |
1297 | switch (ix) |
1085 | { |
1298 | { |
1086 | case 0: |
1299 | case 0: |
1087 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1300 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1088 | ta.next = 0; |
1301 | ta.next = 0; |
1089 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1090 | break; |
1302 | break; |
1091 | |
1303 | |
1092 | case 1: |
1304 | case 1: |
1093 | if (items != 3) |
1305 | if (items != 2) |
1094 | croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items); |
1306 | croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
1095 | |
1307 | |
1096 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
1308 | prepare_transfer (aTHX_ &ta, ST (0), ST (1)); |
1097 | break; |
1309 | break; |
1098 | |
1310 | |
1099 | case 2: |
1311 | case 2: |
1100 | prepare_schedule (&ta); |
1312 | prepare_schedule (aTHX_ &ta); |
1101 | break; |
1313 | break; |
1102 | |
1314 | |
1103 | case 3: |
1315 | case 3: |
1104 | prepare_cede (&ta); |
1316 | prepare_cede (aTHX_ &ta); |
1105 | break; |
1317 | break; |
1106 | |
1318 | |
1107 | case 4: |
1319 | case 4: |
1108 | { |
1320 | if (!prepare_cede_notself (aTHX_ &ta)) |
1109 | SV *yieldstack; |
1321 | XSRETURN_EMPTY; |
1110 | SV *sv; |
|
|
1111 | AV *defav = GvAV (PL_defgv); |
|
|
1112 | |
1322 | |
1113 | yieldstack = *hv_fetch ( |
|
|
1114 | (HV *)SvRV (coro_current), |
|
|
1115 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1116 | 0 |
|
|
1117 | ); |
|
|
1118 | |
|
|
1119 | /* set up @_ -- ugly */ |
|
|
1120 | av_clear (defav); |
|
|
1121 | av_fill (defav, items - 1); |
|
|
1122 | while (items--) |
|
|
1123 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1124 | |
|
|
1125 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1126 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1127 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1128 | ta.flags = 0; |
|
|
1129 | SvREFCNT_dec (sv); |
|
|
1130 | } |
|
|
1131 | break; |
1323 | break; |
1132 | |
|
|
1133 | } |
1324 | } |
1134 | |
1325 | |
|
|
1326 | BARRIER; |
1135 | TRANSFER (ta); |
1327 | TRANSFER (ta); |
1136 | } |
|
|
1137 | |
1328 | |
1138 | void |
1329 | if (GIMME_V != G_VOID && ta.next != ta.prev) |
1139 | _clone_state_from (SV *dst, SV *src) |
1330 | XSRETURN_YES; |
|
|
1331 | } |
|
|
1332 | |
|
|
1333 | bool |
|
|
1334 | _destroy (SV *coro_sv) |
1140 | CODE: |
1335 | CODE: |
1141 | { |
1336 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
1142 | struct coro *coro_src = SvSTATE (src); |
1337 | OUTPUT: |
1143 | |
1338 | RETVAL |
1144 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
|
|
1145 | |
|
|
1146 | ++coro_src->refcnt; |
|
|
1147 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
|
|
1148 | } |
|
|
1149 | |
1339 | |
1150 | void |
1340 | void |
1151 | _exit (code) |
1341 | _exit (code) |
1152 | int code |
1342 | int code |
1153 | PROTOTYPE: $ |
1343 | PROTOTYPE: $ |
1154 | CODE: |
1344 | CODE: |
1155 | _exit (code); |
1345 | _exit (code); |
1156 | |
1346 | |
1157 | int |
1347 | int |
|
|
1348 | cctx_stacksize (int new_stacksize = 0) |
|
|
1349 | CODE: |
|
|
1350 | RETVAL = coro_stacksize; |
|
|
1351 | if (new_stacksize) |
|
|
1352 | coro_stacksize = new_stacksize; |
|
|
1353 | OUTPUT: |
|
|
1354 | RETVAL |
|
|
1355 | |
|
|
1356 | int |
1158 | cctx_count () |
1357 | cctx_count () |
1159 | CODE: |
1358 | CODE: |
1160 | RETVAL = cctx_count; |
1359 | RETVAL = cctx_count; |
1161 | OUTPUT: |
1360 | OUTPUT: |
1162 | RETVAL |
1361 | RETVAL |
… | |
… | |
1166 | CODE: |
1365 | CODE: |
1167 | RETVAL = cctx_idle; |
1366 | RETVAL = cctx_idle; |
1168 | OUTPUT: |
1367 | OUTPUT: |
1169 | RETVAL |
1368 | RETVAL |
1170 | |
1369 | |
|
|
1370 | void |
|
|
1371 | list () |
|
|
1372 | PPCODE: |
|
|
1373 | { |
|
|
1374 | struct coro *coro; |
|
|
1375 | for (coro = coro_first; coro; coro = coro->next) |
|
|
1376 | if (coro->hv) |
|
|
1377 | XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
|
|
1378 | } |
|
|
1379 | |
|
|
1380 | void |
|
|
1381 | _eval (Coro::State coro, SV *coderef) |
|
|
1382 | CODE: |
|
|
1383 | { |
|
|
1384 | if (coro->mainstack) |
|
|
1385 | { |
|
|
1386 | struct coro temp; |
|
|
1387 | Zero (&temp, 1, struct coro); |
|
|
1388 | temp.save = CORO_SAVE_ALL; |
|
|
1389 | |
|
|
1390 | if (!(coro->flags & CF_RUNNING)) |
|
|
1391 | { |
|
|
1392 | save_perl (aTHX_ &temp); |
|
|
1393 | load_perl (aTHX_ coro); |
|
|
1394 | } |
|
|
1395 | |
|
|
1396 | { |
|
|
1397 | dSP; |
|
|
1398 | ENTER; |
|
|
1399 | SAVETMPS; |
|
|
1400 | PUSHMARK (SP); |
|
|
1401 | PUTBACK; |
|
|
1402 | call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1403 | SPAGAIN; |
|
|
1404 | FREETMPS; |
|
|
1405 | LEAVE; |
|
|
1406 | PUTBACK; |
|
|
1407 | } |
|
|
1408 | |
|
|
1409 | if (!(coro->flags & CF_RUNNING)) |
|
|
1410 | { |
|
|
1411 | save_perl (aTHX_ coro); |
|
|
1412 | load_perl (aTHX_ &temp); |
|
|
1413 | } |
|
|
1414 | } |
|
|
1415 | } |
|
|
1416 | |
|
|
1417 | SV * |
|
|
1418 | is_ready (Coro::State coro) |
|
|
1419 | PROTOTYPE: $ |
|
|
1420 | ALIAS: |
|
|
1421 | is_ready = CF_READY |
|
|
1422 | is_running = CF_RUNNING |
|
|
1423 | is_new = CF_NEW |
|
|
1424 | is_destroyed = CF_DESTROYED |
|
|
1425 | CODE: |
|
|
1426 | RETVAL = boolSV (coro->flags & ix); |
|
|
1427 | OUTPUT: |
|
|
1428 | RETVAL |
|
|
1429 | |
|
|
1430 | IV |
|
|
1431 | rss (Coro::State coro) |
|
|
1432 | PROTOTYPE: $ |
|
|
1433 | CODE: |
|
|
1434 | RETVAL = coro_rss (coro); |
|
|
1435 | OUTPUT: |
|
|
1436 | RETVAL |
|
|
1437 | |
|
|
1438 | |
1171 | MODULE = Coro::State PACKAGE = Coro |
1439 | MODULE = Coro::State PACKAGE = Coro |
1172 | |
1440 | |
1173 | BOOT: |
1441 | BOOT: |
1174 | { |
1442 | { |
1175 | int i; |
1443 | int i; |
… | |
… | |
1190 | coro_ready[i] = newAV (); |
1458 | coro_ready[i] = newAV (); |
1191 | |
1459 | |
1192 | { |
1460 | { |
1193 | SV *sv = perl_get_sv("Coro::API", 1); |
1461 | SV *sv = perl_get_sv("Coro::API", 1); |
1194 | |
1462 | |
1195 | coroapi.schedule = api_schedule; |
1463 | coroapi.schedule = api_schedule; |
|
|
1464 | coroapi.save = api_save; |
1196 | coroapi.cede = api_cede; |
1465 | coroapi.cede = api_cede; |
|
|
1466 | coroapi.cede_notself = api_cede_notself; |
1197 | coroapi.ready = api_ready; |
1467 | coroapi.ready = api_ready; |
1198 | coroapi.is_ready = api_is_ready; |
1468 | coroapi.is_ready = api_is_ready; |
1199 | coroapi.nready = &coro_nready; |
1469 | coroapi.nready = &coro_nready; |
1200 | coroapi.current = coro_current; |
1470 | coroapi.current = coro_current; |
1201 | |
1471 | |
1202 | GCoroAPI = &coroapi; |
1472 | GCoroAPI = &coroapi; |
1203 | sv_setiv (sv, (IV)&coroapi); |
1473 | sv_setiv (sv, (IV)&coroapi); |
1204 | SvREADONLY_on (sv); |
1474 | SvREADONLY_on (sv); |
1205 | } |
1475 | } |
1206 | } |
1476 | } |
|
|
1477 | |
|
|
1478 | void |
|
|
1479 | _set_current (SV *current) |
|
|
1480 | PROTOTYPE: $ |
|
|
1481 | CODE: |
|
|
1482 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
1483 | SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1207 | |
1484 | |
1208 | int |
1485 | int |
1209 | prio (Coro::State coro, int newprio = 0) |
1486 | prio (Coro::State coro, int newprio = 0) |
1210 | ALIAS: |
1487 | ALIAS: |
1211 | nice = 1 |
1488 | nice = 1 |
… | |
… | |
1214 | RETVAL = coro->prio; |
1491 | RETVAL = coro->prio; |
1215 | |
1492 | |
1216 | if (items > 1) |
1493 | if (items > 1) |
1217 | { |
1494 | { |
1218 | if (ix) |
1495 | if (ix) |
1219 | newprio += coro->prio; |
1496 | newprio = coro->prio - newprio; |
1220 | |
1497 | |
1221 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1498 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1222 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1499 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1223 | |
1500 | |
1224 | coro->prio = newprio; |
1501 | coro->prio = newprio; |
1225 | } |
1502 | } |
1226 | } |
1503 | } |
|
|
1504 | OUTPUT: |
|
|
1505 | RETVAL |
1227 | |
1506 | |
1228 | SV * |
1507 | SV * |
1229 | ready (SV *self) |
1508 | ready (SV *self) |
1230 | PROTOTYPE: $ |
1509 | PROTOTYPE: $ |
1231 | CODE: |
1510 | CODE: |
1232 | RETVAL = boolSV (api_ready (self)); |
1511 | RETVAL = boolSV (api_ready (self)); |
1233 | OUTPUT: |
1512 | OUTPUT: |
1234 | RETVAL |
1513 | RETVAL |
1235 | |
1514 | |
1236 | SV * |
|
|
1237 | is_ready (SV *self) |
|
|
1238 | PROTOTYPE: $ |
|
|
1239 | CODE: |
|
|
1240 | RETVAL = boolSV (api_is_ready (self)); |
|
|
1241 | OUTPUT: |
|
|
1242 | RETVAL |
|
|
1243 | |
|
|
1244 | int |
1515 | int |
1245 | nready (...) |
1516 | nready (...) |
1246 | PROTOTYPE: |
1517 | PROTOTYPE: |
1247 | CODE: |
1518 | CODE: |
1248 | RETVAL = coro_nready; |
1519 | RETVAL = coro_nready; |
1249 | OUTPUT: |
1520 | OUTPUT: |
1250 | RETVAL |
1521 | RETVAL |
1251 | |
1522 | |
1252 | void |
|
|
1253 | _set_current (SV *current) |
|
|
1254 | PROTOTYPE: $ |
|
|
1255 | CODE: |
|
|
1256 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
1257 | SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
|
|
1258 | |
|
|
1259 | MODULE = Coro::State PACKAGE = Coro::AIO |
1523 | MODULE = Coro::State PACKAGE = Coro::AIO |
1260 | |
1524 | |
1261 | SV * |
1525 | SV * |
1262 | _get_state () |
1526 | _get_state () |
1263 | CODE: |
1527 | CODE: |
1264 | { |
1528 | { |
1265 | struct { |
1529 | struct io_state *data; |
1266 | int errorno; |
|
|
1267 | int laststype; |
|
|
1268 | int laststatval; |
|
|
1269 | Stat_t statcache; |
|
|
1270 | } data; |
|
|
1271 | |
1530 | |
|
|
1531 | RETVAL = newSV (sizeof (struct io_state)); |
|
|
1532 | data = (struct io_state *)SvPVX (RETVAL); |
|
|
1533 | SvCUR_set (RETVAL, sizeof (struct io_state)); |
|
|
1534 | SvPOK_only (RETVAL); |
|
|
1535 | |
1272 | data.errorno = errno; |
1536 | data->errorno = errno; |
1273 | data.laststype = PL_laststype; |
1537 | data->laststype = PL_laststype; |
1274 | data.laststatval = PL_laststatval; |
1538 | data->laststatval = PL_laststatval; |
1275 | data.statcache = PL_statcache; |
1539 | data->statcache = PL_statcache; |
1276 | |
|
|
1277 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1278 | } |
1540 | } |
1279 | OUTPUT: |
1541 | OUTPUT: |
1280 | RETVAL |
1542 | RETVAL |
1281 | |
1543 | |
1282 | void |
1544 | void |
1283 | _set_state (char *data_) |
1545 | _set_state (char *data_) |
1284 | PROTOTYPE: $ |
1546 | PROTOTYPE: $ |
1285 | CODE: |
1547 | CODE: |
1286 | { |
1548 | { |
1287 | struct { |
1549 | struct io_state *data = (void *)data_; |
1288 | int errorno; |
|
|
1289 | int laststype; |
|
|
1290 | int laststatval; |
|
|
1291 | Stat_t statcache; |
|
|
1292 | } *data = (void *)data_; |
|
|
1293 | |
1550 | |
1294 | errno = data->errorno; |
1551 | errno = data->errorno; |
1295 | PL_laststype = data->laststype; |
1552 | PL_laststype = data->laststype; |
1296 | PL_laststatval = data->laststatval; |
1553 | PL_laststatval = data->laststatval; |
1297 | PL_statcache = data->statcache; |
1554 | PL_statcache = data->statcache; |
1298 | } |
1555 | } |
|
|
1556 | |