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1 | #define PERL_NO_GET_CONTEXT |
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2 | |
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3 | #include "libcoro/coro.c" |
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4 | |
1 | #include "EXTERN.h" |
5 | #include "EXTERN.h" |
2 | #include "perl.h" |
6 | #include "perl.h" |
3 | #include "XSUB.h" |
7 | #include "XSUB.h" |
4 | |
8 | |
5 | #include "libcoro/coro.c" |
9 | #include "patchlevel.h" |
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10 | |
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11 | #if PERL_VERSION < 6 |
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12 | # ifndef PL_ppaddr |
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13 | # define PL_ppaddr ppaddr |
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14 | # endif |
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15 | # ifndef call_sv |
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16 | # define call_sv perl_call_sv |
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17 | # endif |
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18 | # ifndef get_sv |
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19 | # define get_sv perl_get_sv |
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20 | # endif |
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21 | # ifndef get_cv |
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22 | # define get_cv perl_get_cv |
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23 | # endif |
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24 | # ifndef IS_PADGV |
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25 | # define IS_PADGV(v) 0 |
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26 | # endif |
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27 | # ifndef IS_PADCONST |
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28 | # define IS_PADCONST(v) 0 |
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29 | # endif |
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30 | #endif |
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31 | |
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32 | #include <errno.h> |
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33 | |
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34 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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35 | # undef STACKGUARD |
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36 | #endif |
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37 | |
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38 | #ifndef STACKGUARD |
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39 | # define STACKGUARD 0 |
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40 | #endif |
6 | |
41 | |
7 | #ifdef HAVE_MMAP |
42 | #ifdef HAVE_MMAP |
8 | # include <unistd.h> |
43 | # include <unistd.h> |
9 | # include <sys/mman.h> |
44 | # include <sys/mman.h> |
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45 | # ifndef MAP_ANONYMOUS |
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46 | # ifdef MAP_ANON |
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47 | # define MAP_ANONYMOUS MAP_ANON |
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48 | # else |
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49 | # undef HAVE_MMAP |
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50 | # endif |
10 | #endif |
51 | # endif |
11 | |
52 | # include <limits.h> |
12 | #define MAY_FLUSH /* increases codesize */ |
53 | # ifndef PAGESIZE |
13 | |
54 | # define PAGESIZE pagesize |
14 | /* perl-related */ |
55 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
15 | #define TRANSFER_SAVE_DEFAV 0x00000001 |
56 | static long pagesize; |
16 | #define TRANSFER_SAVE_DEFSV 0x00000002 |
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17 | #define TRANSFER_SAVE_ERRSV 0x00000004 |
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18 | /* c-related */ |
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19 | #define TRANSFER_SAVE_CCTXT 0x00000008 |
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20 | #ifdef CORO_LAZY_STACK |
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21 | # define TRANSFER_LAZY_STACK 0x00000010 |
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22 | #else |
57 | # else |
23 | # define TRANSFER_LAZY_STACK 0x00000000 |
58 | # define BOOT_PAGESIZE |
24 | #endif |
59 | # endif |
25 | |
60 | #endif |
26 | #define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV|TRANSFER_SAVE_DEFSV \ |
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27 | |TRANSFER_SAVE_ERRSV|TRANSFER_SAVE_CCTXT) |
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28 | |
61 | |
29 | #define SUB_INIT "Coro::State::initialize" |
62 | #define SUB_INIT "Coro::State::initialize" |
30 | #define UCORO_STATE "_coro_state" |
63 | #define UCORO_STATE "_coro_state" |
31 | |
64 | |
32 | /* The next macro should delcare a variable stacklevel that contains and approximation |
65 | /* The next macro should declare a variable stacklevel that contains and approximation |
33 | * to the current C stack pointer. It's property is that it changes with each call |
66 | * to the current C stack pointer. Its property is that it changes with each call |
34 | * and should be unique. */ |
67 | * and should be unique. */ |
35 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
68 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
36 | |
69 | |
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70 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
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71 | |
37 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
72 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
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73 | |
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74 | #include "CoroAPI.h" |
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75 | |
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76 | #ifdef USE_ITHREADS |
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77 | static perl_mutex coro_mutex; |
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78 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
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79 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
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80 | #else |
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81 | # define LOCK (void)0 |
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82 | # define UNLOCK (void)0 |
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83 | #endif |
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84 | |
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85 | static struct CoroAPI coroapi; |
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86 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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87 | static HV *coro_state_stash; |
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88 | static SV *ucoro_state_sv; |
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89 | static U32 ucoro_state_hash; |
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90 | static SV *coro_mortal; /* will be freed after next transfer */ |
38 | |
91 | |
39 | /* this is actually not only the c stack but also c registers etc... */ |
92 | /* this is actually not only the c stack but also c registers etc... */ |
40 | typedef struct { |
93 | typedef struct { |
41 | int refcnt; /* pointer reference counter */ |
94 | int refcnt; /* pointer reference counter */ |
42 | int usecnt; /* shared by how many coroutines */ |
95 | int usecnt; /* shared by how many coroutines */ |
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46 | |
99 | |
47 | void *sptr; |
100 | void *sptr; |
48 | long ssize; /* positive == mmap, otherwise malloc */ |
101 | long ssize; /* positive == mmap, otherwise malloc */ |
49 | } coro_stack; |
102 | } coro_stack; |
50 | |
103 | |
51 | static coro_stack main_stack = { 1, 0, 0 }; |
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52 | |
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53 | struct coro { |
104 | struct coro { |
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105 | /* the top-level JMPENV for each coroutine, needed to catch dies. */ |
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106 | JMPENV start_env; |
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107 | |
54 | /* the optional C context */ |
108 | /* the optional C context */ |
55 | coro_stack *stack; |
109 | coro_stack *stack; |
56 | void *cursp; |
110 | void *cursp; |
57 | int gencnt; |
111 | int gencnt; |
58 | |
112 | |
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61 | SV *defsv; |
115 | SV *defsv; |
62 | SV *errsv; |
116 | SV *errsv; |
63 | |
117 | |
64 | /* saved global state not related to stacks */ |
118 | /* saved global state not related to stacks */ |
65 | U8 dowarn; |
119 | U8 dowarn; |
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120 | I32 in_eval; |
66 | |
121 | |
67 | /* the stacks and related info (callchain etc..) */ |
122 | /* the stacks and related info (callchain etc..) */ |
68 | PERL_SI *curstackinfo; |
123 | PERL_SI *curstackinfo; |
69 | AV *curstack; |
124 | AV *curstack; |
70 | AV *mainstack; |
125 | AV *mainstack; |
71 | SV **stack_sp; |
126 | SV **stack_sp; |
72 | OP *op; |
127 | OP *op; |
73 | SV **curpad; |
128 | SV **curpad; |
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129 | AV *comppad; |
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130 | CV *compcv; |
74 | SV **stack_base; |
131 | SV **stack_base; |
75 | SV **stack_max; |
132 | SV **stack_max; |
76 | SV **tmps_stack; |
133 | SV **tmps_stack; |
77 | I32 tmps_floor; |
134 | I32 tmps_floor; |
78 | I32 tmps_ix; |
135 | I32 tmps_ix; |
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87 | I32 savestack_ix; |
144 | I32 savestack_ix; |
88 | I32 savestack_max; |
145 | I32 savestack_max; |
89 | OP **retstack; |
146 | OP **retstack; |
90 | I32 retstack_ix; |
147 | I32 retstack_ix; |
91 | I32 retstack_max; |
148 | I32 retstack_max; |
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149 | PMOP *curpm; |
92 | COP *curcop; |
150 | COP *curcop; |
93 | JMPENV start_env; |
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94 | JMPENV *top_env; |
151 | JMPENV *top_env; |
95 | |
152 | |
96 | /* data associated with this coroutine (initial args) */ |
153 | /* data associated with this coroutine (initial args) */ |
97 | AV *args; |
154 | AV *args; |
98 | }; |
155 | }; |
99 | |
156 | |
100 | typedef struct coro *Coro__State; |
157 | typedef struct coro *Coro__State; |
101 | typedef struct coro *Coro__State_or_hashref; |
158 | typedef struct coro *Coro__State_or_hashref; |
102 | |
159 | |
103 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
160 | static AV * |
104 | static HV *coro_state_stash; |
161 | coro_clone_padlist (pTHX_ CV *cv) |
105 | static SV *ucoro_state_sv; |
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106 | static U32 ucoro_state_hash; |
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107 | static HV *padlist_cache; |
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108 | |
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109 | /* mostly copied from op.c:cv_clone2 */ |
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110 | STATIC AV * |
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111 | clone_padlist (AV *protopadlist) |
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112 | { |
162 | { |
113 | AV *av; |
163 | AV *padlist = CvPADLIST (cv); |
114 | I32 ix; |
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115 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
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116 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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117 | SV **pname = AvARRAY (protopad_name); |
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118 | SV **ppad = AvARRAY (protopad); |
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119 | I32 fname = AvFILLp (protopad_name); |
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120 | I32 fpad = AvFILLp (protopad); |
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121 | AV *newpadlist, *newpad_name, *newpad; |
164 | AV *newpadlist, *newpad; |
122 | SV **npad; |
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123 | |
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124 | newpad_name = newAV (); |
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125 | for (ix = fname; ix >= 0; ix--) |
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126 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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127 | |
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128 | newpad = newAV (); |
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129 | av_fill (newpad, AvFILLp (protopad)); |
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130 | npad = AvARRAY (newpad); |
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131 | |
165 | |
132 | newpadlist = newAV (); |
166 | newpadlist = newAV (); |
133 | AvREAL_off (newpadlist); |
167 | AvREAL_off (newpadlist); |
134 | av_store (newpadlist, 0, (SV *) newpad_name); |
168 | #if PERL_VERSION < 9 |
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169 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
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170 | #else |
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171 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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172 | #endif |
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173 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
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174 | --AvFILLp (padlist); |
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175 | |
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176 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
135 | av_store (newpadlist, 1, (SV *) newpad); |
177 | av_store (newpadlist, 1, (SV *)newpad); |
136 | |
178 | |
137 | av = newAV (); /* will be @_ */ |
179 | return newpadlist; |
138 | av_extend (av, 0); |
180 | } |
139 | av_store (newpad, 0, (SV *) av); |
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140 | AvFLAGS (av) = AVf_REIFY; |
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141 | |
181 | |
142 | for (ix = fpad; ix > 0; ix--) |
182 | static void |
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183 | free_padlist (pTHX_ AV *padlist) |
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184 | { |
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185 | /* may be during global destruction */ |
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186 | if (SvREFCNT (padlist)) |
143 | { |
187 | { |
144 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
188 | I32 i = AvFILLp (padlist); |
145 | if (namesv && namesv != &PL_sv_undef) |
189 | while (i >= 0) |
146 | { |
190 | { |
147 | char *name = SvPVX (namesv); /* XXX */ |
191 | SV **svp = av_fetch (padlist, i--, FALSE); |
148 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
192 | if (svp) |
149 | { /* lexical from outside? */ |
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150 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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151 | } |
193 | { |
152 | else |
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153 | { /* our own lexical */ |
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154 | SV *sv; |
194 | SV *sv; |
155 | if (*name == '&') |
195 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
156 | sv = SvREFCNT_inc (ppad[ix]); |
196 | SvREFCNT_dec (sv); |
157 | else if (*name == '@') |
197 | |
158 | sv = (SV *) newAV (); |
198 | SvREFCNT_dec (*svp); |
159 | else if (*name == '%') |
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160 | sv = (SV *) newHV (); |
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161 | else |
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162 | sv = NEWSV (0, 0); |
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163 | if (!SvPADBUSY (sv)) |
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164 | SvPADMY_on (sv); |
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165 | npad[ix] = sv; |
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166 | } |
199 | } |
167 | } |
200 | } |
168 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
201 | |
169 | { |
202 | SvREFCNT_dec ((SV*)padlist); |
170 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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171 | } |
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172 | else |
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173 | { |
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174 | SV *sv = NEWSV (0, 0); |
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175 | SvPADTMP_on (sv); |
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176 | npad[ix] = sv; |
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177 | } |
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178 | } |
203 | } |
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204 | } |
179 | |
205 | |
180 | #if 0 /* return -ENOTUNDERSTOOD */ |
206 | static int |
181 | /* Now that vars are all in place, clone nested closures. */ |
207 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
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208 | { |
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209 | AV *padlist; |
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210 | AV *av = (AV *)mg->mg_obj; |
182 | |
211 | |
183 | for (ix = fpad; ix > 0; ix--) { |
212 | /* casting is fun. */ |
184 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
213 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
185 | if (namesv |
214 | free_padlist (aTHX_ padlist); |
186 | && namesv != &PL_sv_undef |
215 | |
187 | && !(SvFLAGS(namesv) & SVf_FAKE) |
216 | SvREFCNT_dec (av); |
188 | && *SvPVX(namesv) == '&' |
217 | |
189 | && CvCLONE(ppad[ix])) |
218 | return 0; |
190 | { |
219 | } |
191 | CV *kid = cv_clone((CV*)ppad[ix]); |
220 | |
192 | SvREFCNT_dec(ppad[ix]); |
221 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
193 | CvCLONE_on(kid); |
222 | |
194 | SvPADMY_on(kid); |
223 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
195 | npad[ix] = (SV*)kid; |
224 | |
196 | } |
225 | /* the next two functions merely cache the padlists */ |
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226 | static void |
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227 | get_padlist (pTHX_ CV *cv) |
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228 | { |
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229 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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230 | |
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231 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
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232 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
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233 | else |
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234 | { |
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235 | #if 0 |
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236 | /* this should work - but it doesn't :( */ |
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237 | CV *cp = Perl_cv_clone (aTHX_ cv); |
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238 | CvPADLIST (cv) = CvPADLIST (cp); |
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239 | CvPADLIST (cp) = 0; |
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240 | SvREFCNT_dec (cp); |
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241 | #else |
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242 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
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243 | #endif |
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244 | } |
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245 | } |
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246 | |
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247 | static void |
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248 | put_padlist (pTHX_ CV *cv) |
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249 | { |
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250 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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251 | |
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252 | if (!mg) |
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253 | { |
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254 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
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255 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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256 | mg->mg_virtual = &vtbl_coro; |
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257 | mg->mg_obj = (SV *)newAV (); |
197 | } |
258 | } |
198 | #endif |
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199 | |
259 | |
200 | return newpadlist; |
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201 | } |
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202 | |
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203 | #ifdef MAY_FLUSH |
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204 | STATIC AV * |
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205 | free_padlist (AV *padlist) |
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206 | { |
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207 | /* may be during global destruction */ |
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208 | if (SvREFCNT(padlist)) |
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209 | { |
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210 | I32 i = AvFILLp(padlist); |
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211 | while (i >= 0) |
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212 | { |
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213 | SV **svp = av_fetch(padlist, i--, FALSE); |
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214 | SV *sv = svp ? *svp : Nullsv; |
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215 | if (sv) |
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216 | SvREFCNT_dec(sv); |
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217 | } |
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218 | |
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219 | SvREFCNT_dec((SV*)padlist); |
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220 | } |
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221 | } |
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222 | #endif |
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223 | |
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224 | /* the next two functions merely cache the padlists */ |
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225 | STATIC void |
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226 | get_padlist (CV *cv) |
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227 | { |
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228 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
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229 | |
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230 | if (he && AvFILLp ((AV *)*he) >= 0) |
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231 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
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232 | else |
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233 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
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234 | } |
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235 | |
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236 | STATIC void |
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237 | put_padlist (CV *cv) |
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238 | { |
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239 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
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240 | |
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241 | if (SvTYPE (*he) != SVt_PVAV) |
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242 | { |
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243 | SvREFCNT_dec (*he); |
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244 | *he = (SV *)newAV (); |
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245 | } |
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246 | |
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247 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
260 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
248 | } |
261 | } |
249 | |
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250 | #ifdef MAY_FLUSH |
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251 | STATIC void |
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252 | flush_padlist_cache () |
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253 | { |
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254 | HV *hv = padlist_cache; |
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255 | padlist_cache = newHV (); |
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256 | |
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257 | if (hv_iterinit (hv)) |
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258 | { |
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259 | HE *he; |
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260 | AV *padlist; |
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261 | |
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262 | while (!!(he = hv_iternext (hv))) |
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263 | { |
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264 | AV *av = (AV *)HeVAL(he); |
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265 | |
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266 | /* casting is fun. */ |
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267 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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268 | free_padlist (padlist); |
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269 | } |
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270 | } |
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271 | |
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272 | SvREFCNT_dec (hv); |
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273 | } |
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274 | #endif |
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275 | |
262 | |
276 | #define SB do { |
263 | #define SB do { |
277 | #define SE } while (0) |
264 | #define SE } while (0) |
278 | |
265 | |
279 | #define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE |
266 | #define LOAD(state) load_state(aTHX_ (state)); |
280 | #define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE |
267 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
281 | |
268 | |
282 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
269 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
283 | |
270 | |
284 | static void |
271 | static void |
285 | load_state(pTHX_ Coro__State c) |
272 | load_state(pTHX_ Coro__State c) |
286 | { |
273 | { |
287 | PL_dowarn = c->dowarn; |
274 | PL_dowarn = c->dowarn; |
|
|
275 | PL_in_eval = c->in_eval; |
288 | |
276 | |
289 | PL_curstackinfo = c->curstackinfo; |
277 | PL_curstackinfo = c->curstackinfo; |
290 | PL_curstack = c->curstack; |
278 | PL_curstack = c->curstack; |
291 | PL_mainstack = c->mainstack; |
279 | PL_mainstack = c->mainstack; |
292 | PL_stack_sp = c->stack_sp; |
280 | PL_stack_sp = c->stack_sp; |
293 | PL_op = c->op; |
281 | PL_op = c->op; |
294 | PL_curpad = c->curpad; |
282 | PL_curpad = c->curpad; |
|
|
283 | PL_comppad = c->comppad; |
|
|
284 | PL_compcv = c->compcv; |
295 | PL_stack_base = c->stack_base; |
285 | PL_stack_base = c->stack_base; |
296 | PL_stack_max = c->stack_max; |
286 | PL_stack_max = c->stack_max; |
297 | PL_tmps_stack = c->tmps_stack; |
287 | PL_tmps_stack = c->tmps_stack; |
298 | PL_tmps_floor = c->tmps_floor; |
288 | PL_tmps_floor = c->tmps_floor; |
299 | PL_tmps_ix = c->tmps_ix; |
289 | PL_tmps_ix = c->tmps_ix; |
… | |
… | |
305 | PL_scopestack_ix = c->scopestack_ix; |
295 | PL_scopestack_ix = c->scopestack_ix; |
306 | PL_scopestack_max = c->scopestack_max; |
296 | PL_scopestack_max = c->scopestack_max; |
307 | PL_savestack = c->savestack; |
297 | PL_savestack = c->savestack; |
308 | PL_savestack_ix = c->savestack_ix; |
298 | PL_savestack_ix = c->savestack_ix; |
309 | PL_savestack_max = c->savestack_max; |
299 | PL_savestack_max = c->savestack_max; |
|
|
300 | #if PERL_VERSION < 9 |
310 | PL_retstack = c->retstack; |
301 | PL_retstack = c->retstack; |
311 | PL_retstack_ix = c->retstack_ix; |
302 | PL_retstack_ix = c->retstack_ix; |
312 | PL_retstack_max = c->retstack_max; |
303 | PL_retstack_max = c->retstack_max; |
|
|
304 | #endif |
|
|
305 | PL_curpm = c->curpm; |
313 | PL_curcop = c->curcop; |
306 | PL_curcop = c->curcop; |
314 | PL_start_env = c->start_env; |
|
|
315 | PL_top_env = c->top_env; |
307 | PL_top_env = c->top_env; |
316 | |
308 | |
317 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
309 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
318 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
310 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
319 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
311 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
… | |
… | |
327 | { |
319 | { |
328 | AV *padlist = (AV *)POPs; |
320 | AV *padlist = (AV *)POPs; |
329 | |
321 | |
330 | if (padlist) |
322 | if (padlist) |
331 | { |
323 | { |
332 | put_padlist (cv); /* mark this padlist as available */ |
324 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
333 | CvPADLIST(cv) = padlist; |
325 | CvPADLIST(cv) = padlist; |
334 | #ifdef USE_THREADS |
|
|
335 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
|
|
336 | #endif |
|
|
337 | } |
326 | } |
338 | |
327 | |
339 | ++CvDEPTH(cv); |
328 | ++CvDEPTH(cv); |
340 | } |
329 | } |
341 | |
330 | |
… | |
… | |
359 | |
348 | |
360 | PUSHs (Nullsv); |
349 | PUSHs (Nullsv); |
361 | /* this loop was inspired by pp_caller */ |
350 | /* this loop was inspired by pp_caller */ |
362 | for (;;) |
351 | for (;;) |
363 | { |
352 | { |
364 | do |
353 | while (cxix >= 0) |
365 | { |
354 | { |
366 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
355 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
367 | |
356 | |
368 | if (CxTYPE(cx) == CXt_SUB) |
357 | if (CxTYPE(cx) == CXt_SUB) |
369 | { |
358 | { |
370 | CV *cv = cx->blk_sub.cv; |
359 | CV *cv = cx->blk_sub.cv; |
371 | if (CvDEPTH(cv)) |
360 | if (CvDEPTH(cv)) |
372 | { |
361 | { |
373 | #ifdef USE_THREADS |
|
|
374 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
|
|
375 | /*CvOWNER(cv) = 0;*/ |
|
|
376 | /*error must unlock this cv etc.. etc...*/ |
|
|
377 | #endif |
|
|
378 | EXTEND (SP, CvDEPTH(cv)*2); |
362 | EXTEND (SP, CvDEPTH(cv)*2); |
379 | |
363 | |
380 | while (--CvDEPTH(cv)) |
364 | while (--CvDEPTH(cv)) |
381 | { |
365 | { |
382 | /* this tells the restore code to increment CvDEPTH */ |
366 | /* this tells the restore code to increment CvDEPTH */ |
… | |
… | |
385 | } |
369 | } |
386 | |
370 | |
387 | PUSHs ((SV *)CvPADLIST(cv)); |
371 | PUSHs ((SV *)CvPADLIST(cv)); |
388 | PUSHs ((SV *)cv); |
372 | PUSHs ((SV *)cv); |
389 | |
373 | |
390 | get_padlist (cv); /* this is a monster */ |
374 | get_padlist (aTHX_ cv); |
391 | } |
375 | } |
392 | } |
376 | } |
|
|
377 | #ifdef CXt_FORMAT |
393 | else if (CxTYPE(cx) == CXt_FORMAT) |
378 | else if (CxTYPE(cx) == CXt_FORMAT) |
394 | { |
379 | { |
395 | /* I never used formats, so how should I know how these are implemented? */ |
380 | /* I never used formats, so how should I know how these are implemented? */ |
396 | /* my bold guess is as a simple, plain sub... */ |
381 | /* my bold guess is as a simple, plain sub... */ |
397 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
382 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
398 | } |
383 | } |
|
|
384 | #endif |
399 | } |
385 | } |
400 | while (cxix >= 0); |
|
|
401 | |
386 | |
402 | if (top_si->si_type == PERLSI_MAIN) |
387 | if (top_si->si_type == PERLSI_MAIN) |
403 | break; |
388 | break; |
404 | |
389 | |
405 | top_si = top_si->si_prev; |
390 | top_si = top_si->si_prev; |
… | |
… | |
412 | |
397 | |
413 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
398 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
414 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
399 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
415 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
400 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
416 | |
401 | |
417 | /* I have not the slightest idea of why av_reify is necessary */ |
|
|
418 | /* but if it's missing the defav contents magically get replaced sometimes */ |
|
|
419 | if (c->defav) |
|
|
420 | av_reify (c->defav); |
|
|
421 | |
|
|
422 | c->dowarn = PL_dowarn; |
402 | c->dowarn = PL_dowarn; |
|
|
403 | c->in_eval = PL_in_eval; |
423 | |
404 | |
424 | c->curstackinfo = PL_curstackinfo; |
405 | c->curstackinfo = PL_curstackinfo; |
425 | c->curstack = PL_curstack; |
406 | c->curstack = PL_curstack; |
426 | c->mainstack = PL_mainstack; |
407 | c->mainstack = PL_mainstack; |
427 | c->stack_sp = PL_stack_sp; |
408 | c->stack_sp = PL_stack_sp; |
428 | c->op = PL_op; |
409 | c->op = PL_op; |
429 | c->curpad = PL_curpad; |
410 | c->curpad = PL_curpad; |
|
|
411 | c->comppad = PL_comppad; |
|
|
412 | c->compcv = PL_compcv; |
430 | c->stack_base = PL_stack_base; |
413 | c->stack_base = PL_stack_base; |
431 | c->stack_max = PL_stack_max; |
414 | c->stack_max = PL_stack_max; |
432 | c->tmps_stack = PL_tmps_stack; |
415 | c->tmps_stack = PL_tmps_stack; |
433 | c->tmps_floor = PL_tmps_floor; |
416 | c->tmps_floor = PL_tmps_floor; |
434 | c->tmps_ix = PL_tmps_ix; |
417 | c->tmps_ix = PL_tmps_ix; |
… | |
… | |
440 | c->scopestack_ix = PL_scopestack_ix; |
423 | c->scopestack_ix = PL_scopestack_ix; |
441 | c->scopestack_max = PL_scopestack_max; |
424 | c->scopestack_max = PL_scopestack_max; |
442 | c->savestack = PL_savestack; |
425 | c->savestack = PL_savestack; |
443 | c->savestack_ix = PL_savestack_ix; |
426 | c->savestack_ix = PL_savestack_ix; |
444 | c->savestack_max = PL_savestack_max; |
427 | c->savestack_max = PL_savestack_max; |
|
|
428 | #if PERL_VERSION < 9 |
445 | c->retstack = PL_retstack; |
429 | c->retstack = PL_retstack; |
446 | c->retstack_ix = PL_retstack_ix; |
430 | c->retstack_ix = PL_retstack_ix; |
447 | c->retstack_max = PL_retstack_max; |
431 | c->retstack_max = PL_retstack_max; |
|
|
432 | #endif |
|
|
433 | c->curpm = PL_curpm; |
448 | c->curcop = PL_curcop; |
434 | c->curcop = PL_curcop; |
449 | c->start_env = PL_start_env; |
|
|
450 | c->top_env = PL_top_env; |
435 | c->top_env = PL_top_env; |
451 | } |
436 | } |
452 | |
437 | |
453 | /* |
438 | /* |
454 | * allocate various perl stacks. This is an exact copy |
439 | * allocate various perl stacks. This is an exact copy |
455 | * of perl.c:init_stacks, except that it uses less memory |
440 | * of perl.c:init_stacks, except that it uses less memory |
456 | * on the assumption that coroutines do not usually need |
441 | * on the (sometimes correct) assumption that coroutines do |
457 | * a lot of stackspace. |
442 | * not usually need a lot of stackspace. |
458 | */ |
443 | */ |
459 | STATIC void |
444 | static void |
460 | coro_init_stacks (pTHX) |
445 | coro_init_stacks (pTHX) |
461 | { |
446 | { |
|
|
447 | LOCK; |
|
|
448 | |
462 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
449 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
463 | PL_curstackinfo->si_type = PERLSI_MAIN; |
450 | PL_curstackinfo->si_type = PERLSI_MAIN; |
464 | PL_curstack = PL_curstackinfo->si_stack; |
451 | PL_curstack = PL_curstackinfo->si_stack; |
465 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
452 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
466 | |
453 | |
… | |
… | |
475 | |
462 | |
476 | New(54,PL_markstack,16,I32); |
463 | New(54,PL_markstack,16,I32); |
477 | PL_markstack_ptr = PL_markstack; |
464 | PL_markstack_ptr = PL_markstack; |
478 | PL_markstack_max = PL_markstack + 16; |
465 | PL_markstack_max = PL_markstack + 16; |
479 | |
466 | |
|
|
467 | #ifdef SET_MARK_OFFSET |
480 | SET_MARK_OFFSET; |
468 | SET_MARK_OFFSET; |
|
|
469 | #endif |
481 | |
470 | |
482 | New(54,PL_scopestack,16,I32); |
471 | New(54,PL_scopestack,16,I32); |
483 | PL_scopestack_ix = 0; |
472 | PL_scopestack_ix = 0; |
484 | PL_scopestack_max = 16; |
473 | PL_scopestack_max = 16; |
485 | |
474 | |
486 | New(54,PL_savestack,96,ANY); |
475 | New(54,PL_savestack,96,ANY); |
487 | PL_savestack_ix = 0; |
476 | PL_savestack_ix = 0; |
488 | PL_savestack_max = 96; |
477 | PL_savestack_max = 96; |
489 | |
478 | |
|
|
479 | #if PERL_VERSION < 9 |
490 | New(54,PL_retstack,8,OP*); |
480 | New(54,PL_retstack,8,OP*); |
491 | PL_retstack_ix = 0; |
481 | PL_retstack_ix = 0; |
492 | PL_retstack_max = 8; |
482 | PL_retstack_max = 8; |
|
|
483 | #endif |
|
|
484 | |
|
|
485 | UNLOCK; |
493 | } |
486 | } |
494 | |
487 | |
495 | /* |
488 | /* |
496 | * destroy the stacks, the callchain etc... |
489 | * destroy the stacks, the callchain etc... |
497 | * still there is a memleak of 128 bytes... |
|
|
498 | */ |
490 | */ |
499 | STATIC void |
491 | static void |
500 | destroy_stacks(pTHX) |
492 | destroy_stacks(pTHX) |
501 | { |
493 | { |
|
|
494 | if (!IN_DESTRUCT) |
|
|
495 | { |
502 | /* is this ugly, I ask? */ |
496 | /* is this ugly, I ask? */ |
503 | while (PL_scopestack_ix) |
497 | LEAVE_SCOPE (0); |
504 | LEAVE; |
|
|
505 | |
498 | |
506 | /* sure it is, but more important: is it correct?? :/ */ |
499 | /* sure it is, but more important: is it correct?? :/ */ |
507 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
|
|
508 | FREETMPS; |
500 | FREETMPS; |
|
|
501 | |
|
|
502 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
|
|
503 | } |
509 | |
504 | |
510 | while (PL_curstackinfo->si_next) |
505 | while (PL_curstackinfo->si_next) |
511 | PL_curstackinfo = PL_curstackinfo->si_next; |
506 | PL_curstackinfo = PL_curstackinfo->si_next; |
512 | |
507 | |
513 | while (PL_curstackinfo) |
508 | while (PL_curstackinfo) |
514 | { |
509 | { |
515 | PERL_SI *p = PL_curstackinfo->si_prev; |
510 | PERL_SI *p = PL_curstackinfo->si_prev; |
516 | |
511 | |
517 | { |
512 | { /*D*//*remove*/ |
518 | dSP; |
513 | dSP; |
519 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
514 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
520 | PUTBACK; /* possibly superfluous */ |
515 | PUTBACK; /* possibly superfluous */ |
521 | } |
516 | } |
522 | |
517 | |
523 | dounwind(-1); |
518 | if (!IN_DESTRUCT) |
524 | |
519 | { |
|
|
520 | dounwind (-1);/*D*//*remove*/ |
525 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
521 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
|
|
522 | } |
|
|
523 | |
526 | Safefree(PL_curstackinfo->si_cxstack); |
524 | Safefree (PL_curstackinfo->si_cxstack); |
527 | Safefree(PL_curstackinfo); |
525 | Safefree (PL_curstackinfo); |
528 | PL_curstackinfo = p; |
526 | PL_curstackinfo = p; |
529 | } |
527 | } |
530 | |
528 | |
531 | Safefree(PL_tmps_stack); |
529 | Safefree (PL_tmps_stack); |
532 | Safefree(PL_markstack); |
530 | Safefree (PL_markstack); |
533 | Safefree(PL_scopestack); |
531 | Safefree (PL_scopestack); |
534 | Safefree(PL_savestack); |
532 | Safefree (PL_savestack); |
|
|
533 | #if PERL_VERSION < 9 |
535 | Safefree(PL_retstack); |
534 | Safefree (PL_retstack); |
|
|
535 | #endif |
536 | } |
536 | } |
537 | |
537 | |
538 | static void |
538 | static void |
539 | allocate_stack (Coro__State ctx, int alloc) |
539 | allocate_stack (Coro__State ctx, int alloc) |
540 | { |
540 | { |
… | |
… | |
543 | New (0, stack, 1, coro_stack); |
543 | New (0, stack, 1, coro_stack); |
544 | |
544 | |
545 | stack->refcnt = 1; |
545 | stack->refcnt = 1; |
546 | stack->usecnt = 1; |
546 | stack->usecnt = 1; |
547 | stack->gencnt = ctx->gencnt = 0; |
547 | stack->gencnt = ctx->gencnt = 0; |
|
|
548 | |
548 | if (alloc) |
549 | if (alloc) |
549 | { |
550 | { |
550 | #ifdef HAVE_MMAP |
551 | #if HAVE_MMAP |
551 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-use */ |
552 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */ |
552 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0); |
553 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
553 | if (stack->sptr == (void *)-1) |
554 | if (stack->sptr != (void *)-1) |
554 | #endif |
|
|
555 | { |
555 | { |
556 | /*FIXME*//*D*//* reasonable stack size! */ |
556 | # if STACKGUARD |
|
|
557 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
558 | # endif |
|
|
559 | } |
|
|
560 | else |
|
|
561 | #endif |
|
|
562 | { |
557 | stack->ssize = -4096 * sizeof (long); |
563 | stack->ssize = - (STACKSIZE * (long)sizeof (long)); |
558 | New (0, stack->sptr, 4096, long); |
564 | New (0, stack->sptr, STACKSIZE, long); |
559 | } |
565 | } |
560 | } |
566 | } |
561 | else |
567 | else |
562 | stack->sptr = 0; |
568 | stack->sptr = 0; |
563 | |
569 | |
… | |
… | |
577 | { |
583 | { |
578 | #ifdef HAVE_MMAP |
584 | #ifdef HAVE_MMAP |
579 | if (stack->ssize > 0 && stack->sptr) |
585 | if (stack->ssize > 0 && stack->sptr) |
580 | munmap (stack->sptr, stack->ssize); |
586 | munmap (stack->sptr, stack->ssize); |
581 | else |
587 | else |
582 | #else |
588 | #endif |
583 | Safefree (stack->sptr); |
589 | Safefree (stack->sptr); |
584 | #endif |
590 | |
585 | Safefree (stack); |
591 | Safefree (stack); |
586 | } |
592 | } |
587 | else if (ctx->gencnt == stack->gencnt) |
593 | else if (ctx->gencnt == stack->gencnt) |
588 | --stack->usecnt; |
594 | --stack->usecnt; |
589 | } |
595 | } |
… | |
… | |
593 | setup_coro (void *arg) |
599 | setup_coro (void *arg) |
594 | { |
600 | { |
595 | /* |
601 | /* |
596 | * emulate part of the perl startup here. |
602 | * emulate part of the perl startup here. |
597 | */ |
603 | */ |
|
|
604 | dTHX; |
598 | dSP; |
605 | dSP; |
599 | Coro__State ctx = (Coro__State)arg; |
606 | Coro__State ctx = (Coro__State)arg; |
600 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
607 | SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); |
601 | |
608 | |
602 | coro_init_stacks (aTHX); |
609 | coro_init_stacks (aTHX); |
603 | JMPENV_BOOTSTRAP; |
610 | /*PL_curcop = 0;*/ |
|
|
611 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
|
|
612 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
613 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
|
|
614 | |
604 | SPAGAIN; |
615 | SPAGAIN; |
605 | |
|
|
606 | /*PL_curcop = 0;*/ |
|
|
607 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
608 | GvAV (PL_defgv) = ctx->args; |
|
|
609 | |
616 | |
610 | if (ctx->stack) |
617 | if (ctx->stack) |
611 | { |
618 | { |
612 | ctx->cursp = 0; |
619 | ctx->cursp = 0; |
613 | |
620 | |
614 | PUSHMARK(SP); |
621 | PUSHMARK(SP); |
615 | PUTBACK; |
622 | PUTBACK; |
616 | (void) call_sv (sub_init, G_VOID|G_NOARGS); |
623 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
624 | |
|
|
625 | if (SvTRUE (ERRSV)) |
|
|
626 | croak (NULL); |
|
|
627 | else |
617 | croak ("FATAL: CCTXT coroutine returned!"); |
628 | croak ("FATAL: CCTXT coroutine returned!"); |
618 | } |
629 | } |
619 | else |
630 | else |
620 | { |
631 | { |
621 | UNOP myop; |
632 | UNOP myop; |
622 | |
633 | |
… | |
… | |
634 | * that doesn't matter, though, since it is only |
645 | * that doesn't matter, though, since it is only |
635 | * pp_nextstate and we never return... |
646 | * pp_nextstate and we never return... |
636 | * ah yes, and I don't care anyways ;) |
647 | * ah yes, and I don't care anyways ;) |
637 | */ |
648 | */ |
638 | PUTBACK; |
649 | PUTBACK; |
639 | PL_op = pp_entersub(); |
650 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
640 | SPAGAIN; |
651 | SPAGAIN; |
641 | |
652 | |
642 | ENTER; /* necessary e.g. for dounwind */ |
653 | ENTER; /* necessary e.g. for dounwind */ |
643 | } |
654 | } |
644 | } |
655 | } |
… | |
… | |
647 | continue_coro (void *arg) |
658 | continue_coro (void *arg) |
648 | { |
659 | { |
649 | /* |
660 | /* |
650 | * this is a _very_ stripped down perl interpreter ;) |
661 | * this is a _very_ stripped down perl interpreter ;) |
651 | */ |
662 | */ |
|
|
663 | dTHX; |
652 | Coro__State ctx = (Coro__State)arg; |
664 | Coro__State ctx = (Coro__State)arg; |
|
|
665 | |
|
|
666 | PL_top_env = &ctx->start_env; |
653 | |
667 | |
654 | ctx->cursp = 0; |
668 | ctx->cursp = 0; |
655 | PL_op = PL_op->op_next; |
669 | PL_op = PL_op->op_next; |
656 | CALLRUNOPS(aTHX); |
670 | CALLRUNOPS(aTHX); |
657 | /*NORETURN*/ |
671 | |
658 | abort (); |
672 | abort (); |
659 | } |
673 | } |
660 | |
674 | |
661 | STATIC void |
675 | static void |
662 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
676 | transfer (pTHX_ struct coro *prev, struct coro *next, int flags) |
663 | { |
677 | { |
664 | dSP; |
|
|
665 | dSTACKLEVEL; |
678 | dSTACKLEVEL; |
666 | |
679 | |
667 | if (prev != next) |
680 | if (prev != next) |
668 | { |
681 | { |
669 | if (next->mainstack) |
682 | if (next->mainstack) |
670 | { |
683 | { |
|
|
684 | LOCK; |
671 | SAVE (prev, flags); |
685 | SAVE (prev, flags); |
672 | LOAD (next); |
686 | LOAD (next); |
|
|
687 | UNLOCK; |
673 | |
688 | |
674 | /* mark this state as in-use */ |
689 | /* mark this state as in-use */ |
675 | next->mainstack = 0; |
690 | next->mainstack = 0; |
676 | next->tmps_ix = -2; |
691 | next->tmps_ix = -2; |
677 | |
692 | |
… | |
… | |
696 | continue_coro, (void *)next, |
711 | continue_coro, (void *)next, |
697 | next->stack->sptr, labs (next->stack->ssize)); |
712 | next->stack->sptr, labs (next->stack->ssize)); |
698 | } |
713 | } |
699 | |
714 | |
700 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
715 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
716 | prev->cursp = stacklevel; |
|
|
717 | /* don't add any code here */ |
701 | } |
718 | } |
702 | |
719 | else |
|
|
720 | next->cursp = stacklevel; |
703 | } |
721 | } |
704 | else if (next->tmps_ix == -2) |
722 | else if (next->tmps_ix == -2) |
705 | croak ("tried to transfer to running coroutine"); |
723 | croak ("tried to transfer to running coroutine"); |
706 | else |
724 | else |
707 | { |
725 | { |
|
|
726 | LOCK; |
708 | SAVE (prev, -1); /* first get rid of the old state */ |
727 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
728 | UNLOCK; |
709 | |
729 | |
710 | if (flags & TRANSFER_SAVE_CCTXT) |
730 | if (flags & TRANSFER_SAVE_CCTXT) |
711 | { |
731 | { |
712 | if (!prev->stack) |
732 | if (!prev->stack) |
713 | allocate_stack (prev, 0); |
733 | allocate_stack (prev, 0); |
714 | |
734 | |
715 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
735 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
716 | { |
736 | { |
|
|
737 | PL_top_env = &next->start_env; |
|
|
738 | |
717 | setup_coro (next); |
739 | setup_coro (next); |
|
|
740 | next->cursp = stacklevel; |
718 | |
741 | |
719 | prev->stack->refcnt++; |
742 | prev->stack->refcnt++; |
720 | prev->stack->usecnt++; |
743 | prev->stack->usecnt++; |
721 | next->stack = prev->stack; |
744 | next->stack = prev->stack; |
722 | next->gencnt = prev->gencnt; |
745 | next->gencnt = prev->gencnt; |
723 | } |
746 | } |
724 | else |
747 | else |
725 | { |
748 | { |
|
|
749 | assert (!next->stack); |
726 | allocate_stack (next, 1); |
750 | allocate_stack (next, 1); |
727 | coro_create (&(next->stack->cctx), |
751 | coro_create (&(next->stack->cctx), |
728 | setup_coro, (void *)next, |
752 | setup_coro, (void *)next, |
729 | next->stack->sptr, labs (next->stack->ssize)); |
753 | next->stack->sptr, labs (next->stack->ssize)); |
730 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
754 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
755 | prev->cursp = stacklevel; |
|
|
756 | /* don't add any code here */ |
731 | } |
757 | } |
732 | } |
758 | } |
733 | else |
759 | else |
|
|
760 | { |
734 | setup_coro (next); |
761 | setup_coro (next); |
|
|
762 | next->cursp = stacklevel; |
|
|
763 | } |
735 | } |
764 | } |
736 | } |
765 | } |
737 | |
766 | |
738 | next->cursp = stacklevel; |
767 | LOCK; |
|
|
768 | if (coro_mortal) |
|
|
769 | { |
|
|
770 | SvREFCNT_dec (coro_mortal); |
|
|
771 | coro_mortal = 0; |
|
|
772 | } |
|
|
773 | UNLOCK; |
|
|
774 | } |
|
|
775 | |
|
|
776 | #define SV_CORO(sv,func) \ |
|
|
777 | do { \ |
|
|
778 | if (SvROK (sv)) \ |
|
|
779 | sv = SvRV (sv); \ |
|
|
780 | \ |
|
|
781 | if (SvTYPE (sv) == SVt_PVHV) \ |
|
|
782 | { \ |
|
|
783 | HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
784 | \ |
|
|
785 | if (!he) \ |
|
|
786 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
787 | \ |
|
|
788 | (sv) = SvRV (HeVAL(he)); \ |
|
|
789 | } \ |
|
|
790 | \ |
|
|
791 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
792 | if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ |
|
|
793 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
794 | \ |
|
|
795 | } while(0) |
|
|
796 | |
|
|
797 | #define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv)) |
|
|
798 | |
|
|
799 | static void |
|
|
800 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
|
|
801 | { |
|
|
802 | SV_CORO (prev, "Coro::transfer"); |
|
|
803 | SV_CORO (next, "Coro::transfer"); |
|
|
804 | |
|
|
805 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
|
|
806 | } |
|
|
807 | |
|
|
808 | /** Coro ********************************************************************/ |
|
|
809 | |
|
|
810 | #define PRIO_MAX 3 |
|
|
811 | #define PRIO_HIGH 1 |
|
|
812 | #define PRIO_NORMAL 0 |
|
|
813 | #define PRIO_LOW -1 |
|
|
814 | #define PRIO_IDLE -3 |
|
|
815 | #define PRIO_MIN -4 |
|
|
816 | |
|
|
817 | /* for Coro.pm */ |
|
|
818 | static GV *coro_current, *coro_idle; |
|
|
819 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
|
|
820 | static int coro_nready; |
|
|
821 | |
|
|
822 | static void |
|
|
823 | coro_enq (pTHX_ SV *sv) |
|
|
824 | { |
|
|
825 | SV **xprio; |
|
|
826 | int prio; |
|
|
827 | |
|
|
828 | if (SvTYPE (sv) != SVt_PVHV) |
|
|
829 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
830 | |
|
|
831 | xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
832 | prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
833 | |
|
|
834 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
835 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
836 | : prio; |
|
|
837 | |
|
|
838 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
839 | coro_nready++; |
|
|
840 | } |
|
|
841 | |
|
|
842 | static SV * |
|
|
843 | coro_deq (pTHX_ int min_prio) |
|
|
844 | { |
|
|
845 | int prio = PRIO_MAX - PRIO_MIN; |
|
|
846 | |
|
|
847 | min_prio -= PRIO_MIN; |
|
|
848 | if (min_prio < 0) |
|
|
849 | min_prio = 0; |
|
|
850 | |
|
|
851 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
|
|
852 | if (av_len (coro_ready[prio]) >= 0) |
|
|
853 | { |
|
|
854 | coro_nready--; |
|
|
855 | return av_shift (coro_ready[prio]); |
|
|
856 | } |
|
|
857 | |
|
|
858 | return 0; |
|
|
859 | } |
|
|
860 | |
|
|
861 | static void |
|
|
862 | api_ready (SV *coro) |
|
|
863 | { |
|
|
864 | dTHX; |
|
|
865 | |
|
|
866 | if (SvROK (coro)) |
|
|
867 | coro = SvRV (coro); |
|
|
868 | |
|
|
869 | LOCK; |
|
|
870 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
|
|
871 | UNLOCK; |
|
|
872 | } |
|
|
873 | |
|
|
874 | static void |
|
|
875 | api_schedule (void) |
|
|
876 | { |
|
|
877 | dTHX; |
|
|
878 | |
|
|
879 | SV *prev, *next; |
|
|
880 | |
|
|
881 | LOCK; |
|
|
882 | |
|
|
883 | prev = SvRV (GvSV (coro_current)); |
|
|
884 | next = coro_deq (aTHX_ PRIO_MIN); |
|
|
885 | |
|
|
886 | if (!next) |
|
|
887 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
|
|
888 | |
|
|
889 | /* free this only after the transfer */ |
|
|
890 | coro_mortal = prev; |
|
|
891 | SV_CORO (prev, "Coro::schedule"); |
|
|
892 | |
|
|
893 | SvRV (GvSV (coro_current)) = next; |
|
|
894 | |
|
|
895 | SV_CORO (next, "Coro::schedule"); |
|
|
896 | |
|
|
897 | UNLOCK; |
|
|
898 | |
|
|
899 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
|
|
900 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
901 | } |
|
|
902 | |
|
|
903 | static void |
|
|
904 | api_cede (void) |
|
|
905 | { |
|
|
906 | dTHX; |
|
|
907 | |
|
|
908 | LOCK; |
|
|
909 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
910 | UNLOCK; |
|
|
911 | |
|
|
912 | api_schedule (); |
739 | } |
913 | } |
740 | |
914 | |
741 | MODULE = Coro::State PACKAGE = Coro::State |
915 | MODULE = Coro::State PACKAGE = Coro::State |
742 | |
916 | |
743 | PROTOTYPES: ENABLE |
917 | PROTOTYPES: ENABLE |
744 | |
918 | |
745 | BOOT: |
919 | BOOT: |
746 | { /* {} necessary for stoopid perl-5.6.x */ |
920 | { /* {} necessary for stoopid perl-5.6.x */ |
|
|
921 | #ifdef USE_ITHREADS |
|
|
922 | MUTEX_INIT (&coro_mutex); |
|
|
923 | #endif |
|
|
924 | BOOT_PAGESIZE; |
|
|
925 | |
747 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
926 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
748 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
927 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
749 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
928 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
750 | |
929 | |
751 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
930 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
752 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
931 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
753 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
932 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
754 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
933 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
755 | |
934 | |
756 | if (!padlist_cache) |
|
|
757 | padlist_cache = newHV (); |
|
|
758 | |
|
|
759 | main_mainstack = PL_mainstack; |
935 | main_mainstack = PL_mainstack; |
|
|
936 | |
|
|
937 | coroapi.ver = CORO_API_VERSION; |
|
|
938 | coroapi.transfer = api_transfer; |
760 | } |
939 | } |
761 | |
940 | |
762 | Coro::State |
941 | Coro::State |
763 | _newprocess(args) |
942 | _newprocess(args) |
764 | SV * args |
943 | SV * args |
… | |
… | |
767 | Coro__State coro; |
946 | Coro__State coro; |
768 | |
947 | |
769 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
948 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
770 | croak ("Coro::State::_newprocess expects an arrayref"); |
949 | croak ("Coro::State::_newprocess expects an arrayref"); |
771 | |
950 | |
772 | New (0, coro, 1, struct coro); |
951 | Newz (0, coro, 1, struct coro); |
773 | |
952 | |
774 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
953 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
775 | coro->mainstack = 0; /* actual work is done inside transfer */ |
954 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
776 | coro->stack = 0; |
955 | /*coro->stack = 0;*/ |
|
|
956 | |
|
|
957 | /* same as JMPENV_BOOTSTRAP */ |
|
|
958 | /* we might be able to recycle start_env, but safe is safe */ |
|
|
959 | /*Zero(&coro->start_env, 1, JMPENV);*/ |
|
|
960 | coro->start_env.je_ret = -1; |
|
|
961 | coro->start_env.je_mustcatch = TRUE; |
777 | |
962 | |
778 | RETVAL = coro; |
963 | RETVAL = coro; |
779 | OUTPUT: |
964 | OUTPUT: |
780 | RETVAL |
965 | RETVAL |
781 | |
966 | |
782 | void |
967 | void |
783 | transfer(prev, next, flags = TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK) |
968 | transfer(prev, next, flags) |
784 | Coro::State_or_hashref prev |
969 | SV *prev |
785 | Coro::State_or_hashref next |
970 | SV *next |
786 | int flags |
971 | int flags |
787 | PROTOTYPE: @ |
972 | PROTOTYPE: @ |
788 | CODE: |
973 | CODE: |
|
|
974 | PUTBACK; |
|
|
975 | SV_CORO (next, "Coro::transfer"); |
|
|
976 | SV_CORO (prev, "Coro::transfer"); |
789 | transfer (aTHX_ prev, next, flags); |
977 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
|
|
978 | SPAGAIN; |
790 | |
979 | |
791 | void |
980 | void |
792 | DESTROY(coro) |
981 | DESTROY(coro) |
793 | Coro::State coro |
982 | Coro::State coro |
794 | CODE: |
983 | CODE: |
795 | |
984 | |
796 | if (coro->mainstack && coro->mainstack != main_mainstack) |
985 | if (coro->mainstack && coro->mainstack != main_mainstack) |
797 | { |
986 | { |
798 | struct coro temp; |
987 | struct coro temp; |
799 | |
988 | |
|
|
989 | PUTBACK; |
800 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
990 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
801 | LOAD(aTHX_ coro); |
991 | LOAD (aTHX_ coro); |
|
|
992 | SPAGAIN; |
802 | |
993 | |
803 | destroy_stacks (aTHX); |
994 | destroy_stacks (aTHX); |
804 | |
995 | |
805 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
996 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
997 | SPAGAIN; |
806 | |
998 | |
807 | coro->mainstack = 0; |
999 | coro->mainstack = 0; |
808 | } |
1000 | } |
809 | |
1001 | |
810 | deallocate_stack (coro); |
1002 | deallocate_stack (coro); |
811 | |
1003 | SvREFCNT_dec (coro->args); |
812 | Safefree (coro); |
1004 | Safefree (coro); |
813 | |
1005 | |
814 | void |
1006 | void |
815 | flush() |
1007 | _exit(code) |
|
|
1008 | int code |
|
|
1009 | PROTOTYPE: $ |
816 | CODE: |
1010 | CODE: |
817 | #ifdef MAY_FLUSH |
1011 | _exit (code); |
818 | flush_padlist_cache (); |
|
|
819 | #endif |
|
|
820 | |
1012 | |
821 | MODULE = Coro::State PACKAGE = Coro::Cont |
1013 | MODULE = Coro::State PACKAGE = Coro::Cont |
822 | |
1014 | |
823 | # this is slightly dirty |
1015 | # this is slightly dirty (should expose a c-level api) |
824 | |
1016 | |
825 | void |
1017 | void |
826 | yield(...) |
1018 | yield(...) |
827 | PROTOTYPE: @ |
1019 | PROTOTYPE: @ |
828 | CODE: |
1020 | CODE: |
829 | static SV *returnstk; |
1021 | SV *yieldstack; |
830 | SV *sv; |
1022 | SV *sv; |
831 | AV *defav = GvAV (PL_defgv); |
1023 | AV *defav = GvAV (PL_defgv); |
832 | struct coro *prev, *next; |
1024 | struct coro *prev, *next; |
833 | |
1025 | |
834 | if (!returnstk) |
1026 | yieldstack = *hv_fetch ( |
835 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
1027 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1028 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1029 | 0 |
|
|
1030 | ); |
836 | |
1031 | |
837 | /* set up @_ -- ugly */ |
1032 | /* set up @_ -- ugly */ |
838 | av_clear (defav); |
1033 | av_clear (defav); |
839 | av_fill (defav, items - 1); |
1034 | av_fill (defav, items - 1); |
840 | while (items--) |
1035 | while (items--) |
841 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
1036 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
842 | |
1037 | |
843 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
844 | sv = av_pop ((AV *)SvRV (returnstk)); |
1038 | sv = av_pop ((AV *)SvRV (yieldstack)); |
845 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
1039 | prev = INT2PTR (struct coro *, SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0)))); |
846 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
1040 | next = INT2PTR (struct coro *, SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0)))); |
847 | SvREFCNT_dec (sv); |
1041 | SvREFCNT_dec (sv); |
848 | |
1042 | |
849 | transfer(aTHX_ prev, next, 0); |
1043 | transfer (aTHX_ prev, next, 0); |
850 | |
1044 | |
|
|
1045 | MODULE = Coro::State PACKAGE = Coro |
|
|
1046 | |
|
|
1047 | # this is slightly dirty (should expose a c-level api) |
|
|
1048 | |
|
|
1049 | BOOT: |
|
|
1050 | { |
|
|
1051 | int i; |
|
|
1052 | HV *stash = gv_stashpv ("Coro", TRUE); |
|
|
1053 | |
|
|
1054 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
|
|
1055 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
|
|
1056 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
|
|
1057 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
|
|
1058 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
|
|
1059 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
|
|
1060 | |
|
|
1061 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1062 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1063 | |
|
|
1064 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
|
|
1065 | coro_ready[i] = newAV (); |
|
|
1066 | |
|
|
1067 | { |
|
|
1068 | SV *sv = perl_get_sv("Coro::API", 1); |
|
|
1069 | |
|
|
1070 | coroapi.schedule = api_schedule; |
|
|
1071 | coroapi.cede = api_cede; |
|
|
1072 | coroapi.ready = api_ready; |
|
|
1073 | coroapi.nready = &coro_nready; |
|
|
1074 | coroapi.current = coro_current; |
|
|
1075 | |
|
|
1076 | GCoroAPI = &coroapi; |
|
|
1077 | sv_setiv(sv, (IV)&coroapi); |
|
|
1078 | SvREADONLY_on(sv); |
|
|
1079 | } |
|
|
1080 | } |
|
|
1081 | |
|
|
1082 | #if !PERL_MICRO |
|
|
1083 | |
|
|
1084 | void |
|
|
1085 | ready(self) |
|
|
1086 | SV * self |
|
|
1087 | PROTOTYPE: $ |
|
|
1088 | CODE: |
|
|
1089 | api_ready (self); |
|
|
1090 | |
|
|
1091 | #endif |
|
|
1092 | |
|
|
1093 | int |
|
|
1094 | nready(...) |
|
|
1095 | PROTOTYPE: |
|
|
1096 | CODE: |
|
|
1097 | RETVAL = coro_nready; |
|
|
1098 | OUTPUT: |
|
|
1099 | RETVAL |
|
|
1100 | |
|
|
1101 | void |
|
|
1102 | schedule(...) |
|
|
1103 | PROTOTYPE: |
|
|
1104 | CODE: |
|
|
1105 | api_schedule (); |
|
|
1106 | |
|
|
1107 | void |
|
|
1108 | cede(...) |
|
|
1109 | PROTOTYPE: |
|
|
1110 | CODE: |
|
|
1111 | api_cede (); |
|
|
1112 | |
|
|
1113 | # and these are hacks |
|
|
1114 | SV * |
|
|
1115 | _aio_get_state () |
|
|
1116 | CODE: |
|
|
1117 | { |
|
|
1118 | struct { |
|
|
1119 | int errorno; |
|
|
1120 | int laststype; |
|
|
1121 | int laststatval; |
|
|
1122 | Stat_t statcache; |
|
|
1123 | } data; |
|
|
1124 | |
|
|
1125 | data.errorno = errno; |
|
|
1126 | data.laststype = PL_laststype; |
|
|
1127 | data.laststatval = PL_laststatval; |
|
|
1128 | data.statcache = PL_statcache; |
|
|
1129 | |
|
|
1130 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1131 | } |
|
|
1132 | OUTPUT: |
|
|
1133 | RETVAL |
|
|
1134 | |
|
|
1135 | void |
|
|
1136 | _aio_set_state (char *data_) |
|
|
1137 | PROTOTYPE: $ |
|
|
1138 | CODE: |
|
|
1139 | { |
|
|
1140 | struct { |
|
|
1141 | int errorno; |
|
|
1142 | int laststype; |
|
|
1143 | int laststatval; |
|
|
1144 | Stat_t statcache; |
|
|
1145 | } *data = (void *)data_; |
|
|
1146 | |
|
|
1147 | errno = data->errorno; |
|
|
1148 | PL_laststype = data->laststype; |
|
|
1149 | PL_laststatval = data->laststatval; |
|
|
1150 | PL_statcache = data->statcache; |
|
|
1151 | } |