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1 | #include "libcoro/coro.c" |
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2 | |
1 | #include "EXTERN.h" |
3 | #include "EXTERN.h" |
2 | #include "perl.h" |
4 | #include "perl.h" |
3 | #include "XSUB.h" |
5 | #include "XSUB.h" |
4 | |
6 | |
5 | #if 1 |
7 | #include "patchlevel.h" |
6 | # define CHK(x) (void *)0 |
8 | |
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9 | #if USE_VALGRIND |
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10 | # include <valgrind/valgrind.h> |
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11 | #endif |
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12 | |
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13 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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14 | (PERL_REVISION > (a) \ |
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15 | || (PERL_REVISION == (a) \ |
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16 | && (PERL_VERSION > (b) \ |
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17 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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18 | |
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19 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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20 | # ifndef PL_ppaddr |
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21 | # define PL_ppaddr ppaddr |
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22 | # endif |
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23 | # ifndef call_sv |
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24 | # define call_sv perl_call_sv |
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25 | # endif |
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26 | # ifndef get_sv |
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27 | # define get_sv perl_get_sv |
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28 | # endif |
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29 | # ifndef get_cv |
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30 | # define get_cv perl_get_cv |
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31 | # endif |
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32 | # ifndef IS_PADGV |
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33 | # define IS_PADGV(v) 0 |
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34 | # endif |
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35 | # ifndef IS_PADCONST |
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36 | # define IS_PADCONST(v) 0 |
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37 | # endif |
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38 | #endif |
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39 | |
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40 | #include <stdio.h> |
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41 | #include <errno.h> |
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42 | |
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43 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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44 | # undef STACKGUARD |
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45 | #endif |
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46 | |
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47 | #ifndef STACKGUARD |
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48 | # define STACKGUARD 0 |
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49 | #endif |
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50 | |
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51 | #ifdef HAVE_MMAP |
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52 | # include <unistd.h> |
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53 | # include <sys/mman.h> |
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54 | # ifndef MAP_ANONYMOUS |
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55 | # ifdef MAP_ANON |
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56 | # define MAP_ANONYMOUS MAP_ANON |
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57 | # else |
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58 | # undef HAVE_MMAP |
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59 | # endif |
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60 | # endif |
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61 | # include <limits.h> |
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62 | # ifndef PAGESIZE |
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63 | # define PAGESIZE pagesize |
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64 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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65 | static long pagesize; |
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66 | # else |
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67 | # define BOOT_PAGESIZE (void)0 |
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68 | # endif |
7 | #else |
69 | #else |
8 | # define CHK(x) if (!(x)) croak("FATAL, CHK: " #x) |
70 | # define PAGESIZE 0 |
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71 | # define BOOT_PAGESIZE (void)0 |
9 | #endif |
72 | #endif |
10 | |
73 | |
11 | #define MAY_FLUSH /* increases codesize */ |
74 | /* The next macro should declare a variable stacklevel that contains and approximation |
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75 | * to the current C stack pointer. Its property is that it changes with each call |
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76 | * and should be unique. */ |
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77 | #define dSTACKLEVEL int stacklevel |
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78 | #define STACKLEVEL ((void *)&stacklevel) |
12 | |
79 | |
13 | #define SUB_INIT "Coro::State::_newcoro" |
80 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
14 | |
81 | |
15 | #define SAVE_DEFAV 0x00000001 |
82 | #if __GNUC__ >= 3 |
16 | #define SAVE_DEFSV 0x00000002 |
83 | # define attribute(x) __attribute__(x) |
17 | #define SAVE_ERRSV 0x00000004 |
84 | #else |
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85 | # define attribute(x) |
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86 | #endif |
18 | |
87 | |
19 | #define SAVE_ALL -1 |
88 | #define NOINLINE attribute ((noinline)) |
20 | |
89 | |
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90 | #include "CoroAPI.h" |
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91 | |
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92 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
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93 | |
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94 | #ifdef USE_ITHREADS |
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95 | static perl_mutex coro_mutex; |
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96 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
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97 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
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98 | #else |
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99 | # define LOCK (void)0 |
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100 | # define UNLOCK (void)0 |
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101 | #endif |
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102 | |
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103 | static struct CoroAPI coroapi; |
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104 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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105 | static HV *coro_state_stash, *coro_stash; |
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106 | static SV *coro_mortal; /* will be freed after next transfer */ |
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107 | |
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108 | static struct coro_cctx *cctx_first; |
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109 | static int cctx_count, cctx_idle; |
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110 | |
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111 | /* this is a structure representing a c-level coroutine */ |
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112 | typedef struct coro_cctx { |
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113 | struct coro_cctx *next; |
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114 | |
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115 | /* the stack */ |
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116 | void *sptr; |
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117 | long ssize; /* positive == mmap, otherwise malloc */ |
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118 | |
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119 | /* cpu state */ |
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120 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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121 | JMPENV *top_env; |
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122 | coro_context cctx; |
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123 | |
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124 | #if USE_VALGRIND |
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125 | int valgrind_id; |
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126 | #endif |
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127 | } coro_cctx; |
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128 | |
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129 | /* this is a structure representing a perl-level coroutine */ |
21 | struct coro { |
130 | struct coro { |
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131 | /* the c coroutine allocated to this perl coroutine, if any */ |
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132 | coro_cctx *cctx; |
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133 | |
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134 | /* data associated with this coroutine (initial args) */ |
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135 | AV *args; |
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136 | int refcnt; |
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137 | |
22 | /* optionally saved, might be zero */ |
138 | /* optionally saved, might be zero */ |
23 | AV *defav; |
139 | AV *defav; |
24 | SV *defsv; |
140 | SV *defsv; |
25 | SV *errsv; |
141 | SV *errsv; |
26 | |
142 | |
27 | /* saved global state not related to stacks */ |
143 | #define VAR(name,type) type name; |
28 | U8 dowarn; |
144 | # include "state.h" |
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145 | #undef VAR |
29 | |
146 | |
30 | /* the stacks and related info (callchain etc..) */ |
147 | /* coro process data */ |
31 | PERL_SI *curstackinfo; |
148 | int prio; |
32 | AV *curstack; |
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33 | AV *mainstack; |
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34 | SV **stack_sp; |
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35 | OP *op; |
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36 | SV **curpad; |
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37 | SV **stack_base; |
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38 | SV **stack_max; |
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39 | SV **tmps_stack; |
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40 | I32 tmps_floor; |
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41 | I32 tmps_ix; |
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42 | I32 tmps_max; |
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43 | I32 *markstack; |
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44 | I32 *markstack_ptr; |
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45 | I32 *markstack_max; |
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46 | I32 *scopestack; |
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47 | I32 scopestack_ix; |
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48 | I32 scopestack_max; |
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49 | ANY *savestack; |
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50 | I32 savestack_ix; |
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51 | I32 savestack_max; |
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52 | OP **retstack; |
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53 | I32 retstack_ix; |
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54 | I32 retstack_max; |
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55 | COP *curcop; |
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56 | |
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57 | /* data associated with this coroutine (initial args) */ |
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58 | AV *args; |
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59 | }; |
149 | }; |
60 | |
150 | |
61 | typedef struct coro *Coro__State; |
151 | typedef struct coro *Coro__State; |
62 | typedef struct coro *Coro__State_or_hashref; |
152 | typedef struct coro *Coro__State_or_hashref; |
63 | |
153 | |
64 | static HV *padlist_cache; |
154 | static AV * |
65 | |
155 | coro_clone_padlist (CV *cv) |
66 | /* mostly copied from op.c:cv_clone2 */ |
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67 | STATIC AV * |
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68 | clone_padlist (AV *protopadlist) |
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69 | { |
156 | { |
70 | AV *av; |
157 | AV *padlist = CvPADLIST (cv); |
71 | I32 ix; |
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72 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
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73 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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74 | SV **pname = AvARRAY (protopad_name); |
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75 | SV **ppad = AvARRAY (protopad); |
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76 | I32 fname = AvFILLp (protopad_name); |
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77 | I32 fpad = AvFILLp (protopad); |
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78 | AV *newpadlist, *newpad_name, *newpad; |
158 | AV *newpadlist, *newpad; |
79 | SV **npad; |
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80 | |
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81 | newpad_name = newAV (); |
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82 | for (ix = fname; ix >= 0; ix--) |
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83 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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84 | |
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85 | newpad = newAV (); |
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86 | av_fill (newpad, AvFILLp (protopad)); |
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87 | npad = AvARRAY (newpad); |
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88 | |
159 | |
89 | newpadlist = newAV (); |
160 | newpadlist = newAV (); |
90 | AvREAL_off (newpadlist); |
161 | AvREAL_off (newpadlist); |
91 | av_store (newpadlist, 0, (SV *) newpad_name); |
162 | #if PERL_VERSION_ATLEAST (5,9,0) |
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163 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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164 | #else |
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165 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
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166 | #endif |
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167 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
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168 | --AvFILLp (padlist); |
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169 | |
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170 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
92 | av_store (newpadlist, 1, (SV *) newpad); |
171 | av_store (newpadlist, 1, (SV *)newpad); |
93 | |
172 | |
94 | av = newAV (); /* will be @_ */ |
173 | return newpadlist; |
95 | av_extend (av, 0); |
174 | } |
96 | av_store (newpad, 0, (SV *) av); |
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97 | AvFLAGS (av) = AVf_REIFY; |
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98 | |
175 | |
99 | for (ix = fpad; ix > 0; ix--) |
176 | static void |
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177 | free_padlist (AV *padlist) |
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178 | { |
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179 | /* may be during global destruction */ |
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180 | if (SvREFCNT (padlist)) |
100 | { |
181 | { |
101 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
182 | I32 i = AvFILLp (padlist); |
102 | if (namesv && namesv != &PL_sv_undef) |
183 | while (i >= 0) |
103 | { |
184 | { |
104 | char *name = SvPVX (namesv); /* XXX */ |
185 | SV **svp = av_fetch (padlist, i--, FALSE); |
105 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
186 | if (svp) |
106 | { /* lexical from outside? */ |
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107 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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108 | } |
187 | { |
109 | else |
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110 | { /* our own lexical */ |
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111 | SV *sv; |
188 | SV *sv; |
112 | if (*name == '&') |
189 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
113 | sv = SvREFCNT_inc (ppad[ix]); |
190 | SvREFCNT_dec (sv); |
114 | else if (*name == '@') |
191 | |
115 | sv = (SV *) newAV (); |
192 | SvREFCNT_dec (*svp); |
116 | else if (*name == '%') |
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117 | sv = (SV *) newHV (); |
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118 | else |
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119 | sv = NEWSV (0, 0); |
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120 | if (!SvPADBUSY (sv)) |
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121 | SvPADMY_on (sv); |
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122 | npad[ix] = sv; |
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123 | } |
193 | } |
124 | } |
194 | } |
125 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
195 | |
126 | { |
196 | SvREFCNT_dec ((SV*)padlist); |
127 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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128 | } |
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129 | else |
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130 | { |
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131 | SV *sv = NEWSV (0, 0); |
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132 | SvPADTMP_on (sv); |
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133 | npad[ix] = sv; |
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134 | } |
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135 | } |
197 | } |
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198 | } |
136 | |
199 | |
137 | #if 0 /* return -ENOTUNDERSTOOD */ |
200 | static int |
138 | /* Now that vars are all in place, clone nested closures. */ |
201 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
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202 | { |
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203 | AV *padlist; |
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204 | AV *av = (AV *)mg->mg_obj; |
139 | |
205 | |
140 | for (ix = fpad; ix > 0; ix--) { |
206 | /* casting is fun. */ |
141 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
207 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
142 | if (namesv |
208 | free_padlist (padlist); |
143 | && namesv != &PL_sv_undef |
209 | |
144 | && !(SvFLAGS(namesv) & SVf_FAKE) |
210 | SvREFCNT_dec (av); |
145 | && *SvPVX(namesv) == '&' |
211 | |
146 | && CvCLONE(ppad[ix])) |
212 | return 0; |
147 | { |
213 | } |
148 | CV *kid = cv_clone((CV*)ppad[ix]); |
214 | |
149 | SvREFCNT_dec(ppad[ix]); |
215 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
150 | CvCLONE_on(kid); |
216 | |
151 | SvPADMY_on(kid); |
217 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
152 | npad[ix] = (SV*)kid; |
218 | |
153 | } |
219 | #define CORO_MAGIC(cv) \ |
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220 | SvMAGIC (cv) \ |
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221 | ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
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222 | ? SvMAGIC (cv) \ |
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223 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
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224 | : 0 |
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225 | |
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226 | /* the next two functions merely cache the padlists */ |
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227 | static void |
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228 | get_padlist (CV *cv) |
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229 | { |
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230 | MAGIC *mg = CORO_MAGIC (cv); |
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231 | AV *av; |
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232 | |
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233 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
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234 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
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235 | else |
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236 | { |
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237 | #if 0 |
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238 | /* this is probably cleaner, but also slower? */ |
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239 | CV *cp = Perl_cv_clone (cv); |
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240 | CvPADLIST (cv) = CvPADLIST (cp); |
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241 | CvPADLIST (cp) = 0; |
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242 | SvREFCNT_dec (cp); |
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243 | #else |
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244 | CvPADLIST (cv) = coro_clone_padlist (cv); |
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245 | #endif |
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246 | } |
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247 | } |
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248 | |
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249 | static void |
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250 | put_padlist (CV *cv) |
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251 | { |
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252 | MAGIC *mg = CORO_MAGIC (cv); |
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253 | AV *av; |
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254 | |
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255 | if (!mg) |
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256 | { |
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257 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
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258 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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259 | mg->mg_virtual = &vtbl_coro; |
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260 | mg->mg_obj = (SV *)newAV (); |
154 | } |
261 | } |
155 | #endif |
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156 | |
262 | |
157 | return newpadlist; |
263 | av = (AV *)mg->mg_obj; |
158 | } |
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159 | |
264 | |
160 | #ifdef MAY_FLUSH |
265 | if (AvFILLp (av) >= AvMAX (av)) |
161 | STATIC AV * |
266 | av_extend (av, AvMAX (av) + 1); |
162 | free_padlist (AV *padlist) |
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163 | { |
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164 | /* may be during global destruction */ |
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165 | if (SvREFCNT(padlist)) |
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166 | { |
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167 | I32 i = AvFILLp(padlist); |
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168 | while (i >= 0) |
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169 | { |
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170 | SV **svp = av_fetch(padlist, i--, FALSE); |
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171 | SV *sv = svp ? *svp : Nullsv; |
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172 | if (sv) |
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173 | SvREFCNT_dec(sv); |
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174 | } |
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175 | |
267 | |
176 | SvREFCNT_dec((SV*)padlist); |
268 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
177 | } |
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178 | } |
269 | } |
179 | #endif |
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180 | |
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181 | /* the next two functions merely cache the padlists */ |
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182 | STATIC void |
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183 | get_padlist (CV *cv) |
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184 | { |
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185 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
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186 | |
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187 | if (he && AvFILLp ((AV *)*he) >= 0) |
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188 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
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189 | else |
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190 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
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191 | } |
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192 | |
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193 | STATIC void |
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194 | put_padlist (CV *cv) |
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195 | { |
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196 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
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197 | |
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198 | if (SvTYPE (*he) != SVt_PVAV) |
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199 | { |
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200 | SvREFCNT_dec (*he); |
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201 | *he = (SV *)newAV (); |
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202 | } |
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203 | |
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204 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
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205 | } |
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206 | |
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207 | #ifdef MAY_FLUSH |
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208 | STATIC void |
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209 | flush_padlist_cache () |
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210 | { |
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211 | HV *hv = padlist_cache; |
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212 | padlist_cache = newHV (); |
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213 | |
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214 | if (hv_iterinit (hv)) |
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215 | { |
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216 | HE *he; |
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217 | AV *padlist; |
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218 | |
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219 | while (!!(he = hv_iternext (hv))) |
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220 | { |
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221 | AV *av = (AV *)HeVAL(he); |
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222 | |
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223 | /* casting is fun. */ |
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224 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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225 | free_padlist (padlist); |
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226 | } |
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227 | } |
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228 | |
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229 | SvREFCNT_dec (hv); |
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230 | } |
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231 | #endif |
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232 | |
270 | |
233 | #define SB do { |
271 | #define SB do { |
234 | #define SE } while (0) |
272 | #define SE } while (0) |
235 | |
273 | |
236 | #define LOAD(state) SB load_state(aTHX_ state); SPAGAIN; SE |
274 | #define LOAD(state) load_state((state)); |
237 | #define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ state,flags); SE |
275 | #define SAVE(state,flags) save_state((state),(flags)); |
238 | |
276 | |
239 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
277 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
240 | |
278 | |
241 | static void |
279 | static void |
242 | load_state(pTHX_ Coro__State c) |
280 | load_state(Coro__State c) |
243 | { |
281 | { |
244 | PL_dowarn = c->dowarn; |
282 | #define VAR(name,type) PL_ ## name = c->name; |
245 | |
283 | # include "state.h" |
246 | PL_curstackinfo = c->curstackinfo; |
284 | #undef VAR |
247 | PL_curstack = c->curstack; |
|
|
248 | PL_mainstack = c->mainstack; |
|
|
249 | PL_stack_sp = c->stack_sp; |
|
|
250 | PL_op = c->op; |
|
|
251 | PL_curpad = c->curpad; |
|
|
252 | PL_stack_base = c->stack_base; |
|
|
253 | PL_stack_max = c->stack_max; |
|
|
254 | PL_tmps_stack = c->tmps_stack; |
|
|
255 | PL_tmps_floor = c->tmps_floor; |
|
|
256 | PL_tmps_ix = c->tmps_ix; |
|
|
257 | PL_tmps_max = c->tmps_max; |
|
|
258 | PL_markstack = c->markstack; |
|
|
259 | PL_markstack_ptr = c->markstack_ptr; |
|
|
260 | PL_markstack_max = c->markstack_max; |
|
|
261 | PL_scopestack = c->scopestack; |
|
|
262 | PL_scopestack_ix = c->scopestack_ix; |
|
|
263 | PL_scopestack_max = c->scopestack_max; |
|
|
264 | PL_savestack = c->savestack; |
|
|
265 | PL_savestack_ix = c->savestack_ix; |
|
|
266 | PL_savestack_max = c->savestack_max; |
|
|
267 | PL_retstack = c->retstack; |
|
|
268 | PL_retstack_ix = c->retstack_ix; |
|
|
269 | PL_retstack_max = c->retstack_max; |
|
|
270 | PL_curcop = c->curcop; |
|
|
271 | |
285 | |
272 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
286 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
273 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
287 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
274 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
288 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
275 | |
289 | |
… | |
… | |
278 | CV *cv; |
292 | CV *cv; |
279 | |
293 | |
280 | /* now do the ugly restore mess */ |
294 | /* now do the ugly restore mess */ |
281 | while ((cv = (CV *)POPs)) |
295 | while ((cv = (CV *)POPs)) |
282 | { |
296 | { |
283 | AV *padlist = (AV *)POPs; |
|
|
284 | |
|
|
285 | if (padlist) |
|
|
286 | { |
|
|
287 | put_padlist (cv); /* mark this padlist as available */ |
297 | put_padlist (cv); /* mark this padlist as available */ |
288 | CvPADLIST(cv) = padlist; |
298 | CvDEPTH (cv) = PTR2IV (POPs); |
289 | #ifdef USE_THREADS |
299 | CvPADLIST (cv) = (AV *)POPs; |
290 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
|
|
291 | #endif |
|
|
292 | } |
|
|
293 | |
|
|
294 | ++CvDEPTH(cv); |
|
|
295 | } |
300 | } |
296 | |
301 | |
297 | PUTBACK; |
302 | PUTBACK; |
298 | } |
303 | } |
299 | } |
304 | } |
300 | |
305 | |
301 | static void |
306 | static void |
302 | save_state(pTHX_ Coro__State c, int flags) |
307 | save_state(Coro__State c, int flags) |
303 | { |
308 | { |
304 | { |
309 | { |
305 | dSP; |
310 | dSP; |
306 | I32 cxix = cxstack_ix; |
311 | I32 cxix = cxstack_ix; |
|
|
312 | PERL_CONTEXT *ccstk = cxstack; |
307 | PERL_SI *top_si = PL_curstackinfo; |
313 | PERL_SI *top_si = PL_curstackinfo; |
308 | PERL_CONTEXT *ccstk = cxstack; |
|
|
309 | |
314 | |
310 | /* |
315 | /* |
311 | * the worst thing you can imagine happens first - we have to save |
316 | * the worst thing you can imagine happens first - we have to save |
312 | * (and reinitialize) all cv's in the whole callchain :( |
317 | * (and reinitialize) all cv's in the whole callchain :( |
313 | */ |
318 | */ |
314 | |
319 | |
315 | PUSHs (Nullsv); |
320 | PUSHs (Nullsv); |
316 | /* this loop was inspired by pp_caller */ |
321 | /* this loop was inspired by pp_caller */ |
317 | for (;;) |
322 | for (;;) |
318 | { |
323 | { |
319 | do |
324 | while (cxix >= 0) |
320 | { |
325 | { |
321 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
326 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
322 | |
327 | |
323 | if (CxTYPE(cx) == CXt_SUB) |
328 | if (CxTYPE(cx) == CXt_SUB) |
324 | { |
329 | { |
325 | CV *cv = cx->blk_sub.cv; |
330 | CV *cv = cx->blk_sub.cv; |
|
|
331 | |
326 | if (CvDEPTH(cv)) |
332 | if (CvDEPTH (cv)) |
327 | { |
333 | { |
328 | #ifdef USE_THREADS |
|
|
329 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
|
|
330 | /*CvOWNER(cv) = 0;*/ |
|
|
331 | /*error must unlock this cv etc.. etc...*/ |
|
|
332 | #endif |
|
|
333 | EXTEND (SP, CvDEPTH(cv)*2); |
334 | EXTEND (SP, 3); |
334 | |
|
|
335 | while (--CvDEPTH(cv)) |
|
|
336 | { |
|
|
337 | /* this tells the restore code to increment CvDEPTH */ |
|
|
338 | PUSHs (Nullsv); |
|
|
339 | PUSHs ((SV *)cv); |
|
|
340 | } |
|
|
341 | |
335 | |
342 | PUSHs ((SV *)CvPADLIST(cv)); |
336 | PUSHs ((SV *)CvPADLIST(cv)); |
|
|
337 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
343 | PUSHs ((SV *)cv); |
338 | PUSHs ((SV *)cv); |
344 | |
339 | |
|
|
340 | CvDEPTH (cv) = 0; |
345 | get_padlist (cv); /* this is a monster */ |
341 | get_padlist (cv); |
346 | } |
342 | } |
347 | } |
343 | } |
|
|
344 | #ifdef CXt_FORMAT |
348 | else if (CxTYPE(cx) == CXt_FORMAT) |
345 | else if (CxTYPE(cx) == CXt_FORMAT) |
349 | { |
346 | { |
350 | /* I never used formats, so how should I know how these are implemented? */ |
347 | /* I never used formats, so how should I know how these are implemented? */ |
351 | /* my bold guess is as a simple, plain sub... */ |
348 | /* my bold guess is as a simple, plain sub... */ |
352 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
349 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
353 | } |
350 | } |
|
|
351 | #endif |
354 | } |
352 | } |
355 | while (cxix >= 0); |
|
|
356 | |
353 | |
357 | if (top_si->si_type == PERLSI_MAIN) |
354 | if (top_si->si_type == PERLSI_MAIN) |
358 | break; |
355 | break; |
359 | |
356 | |
360 | top_si = top_si->si_prev; |
357 | top_si = top_si->si_prev; |
… | |
… | |
363 | } |
360 | } |
364 | |
361 | |
365 | PUTBACK; |
362 | PUTBACK; |
366 | } |
363 | } |
367 | |
364 | |
368 | c->defav = flags & SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
365 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
369 | c->defsv = flags & SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
366 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
370 | c->errsv = flags & SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
367 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
371 | |
368 | |
372 | c->dowarn = PL_dowarn; |
369 | #define VAR(name,type)c->name = PL_ ## name; |
|
|
370 | # include "state.h" |
|
|
371 | #undef VAR |
|
|
372 | } |
373 | |
373 | |
374 | c->curstackinfo = PL_curstackinfo; |
374 | /* |
375 | c->curstack = PL_curstack; |
375 | * allocate various perl stacks. This is an exact copy |
376 | c->mainstack = PL_mainstack; |
376 | * of perl.c:init_stacks, except that it uses less memory |
377 | c->stack_sp = PL_stack_sp; |
377 | * on the (sometimes correct) assumption that coroutines do |
378 | c->op = PL_op; |
378 | * not usually need a lot of stackspace. |
379 | c->curpad = PL_curpad; |
379 | */ |
|
|
380 | static void |
|
|
381 | coro_init_stacks () |
|
|
382 | { |
|
|
383 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
|
|
384 | PL_curstackinfo->si_type = PERLSI_MAIN; |
|
|
385 | PL_curstack = PL_curstackinfo->si_stack; |
|
|
386 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
|
|
387 | |
|
|
388 | PL_stack_base = AvARRAY(PL_curstack); |
380 | c->stack_base = PL_stack_base; |
389 | PL_stack_sp = PL_stack_base; |
381 | c->stack_max = PL_stack_max; |
390 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
382 | c->tmps_stack = PL_tmps_stack; |
391 | |
383 | c->tmps_floor = PL_tmps_floor; |
392 | New(50,PL_tmps_stack,96,SV*); |
384 | c->tmps_ix = PL_tmps_ix; |
393 | PL_tmps_floor = -1; |
385 | c->tmps_max = PL_tmps_max; |
394 | PL_tmps_ix = -1; |
|
|
395 | PL_tmps_max = 96; |
|
|
396 | |
|
|
397 | New(54,PL_markstack,16,I32); |
386 | c->markstack = PL_markstack; |
398 | PL_markstack_ptr = PL_markstack; |
387 | c->markstack_ptr = PL_markstack_ptr; |
399 | PL_markstack_max = PL_markstack + 16; |
388 | c->markstack_max = PL_markstack_max; |
400 | |
389 | c->scopestack = PL_scopestack; |
401 | #ifdef SET_MARK_OFFSET |
390 | c->scopestack_ix = PL_scopestack_ix; |
402 | SET_MARK_OFFSET; |
391 | c->scopestack_max = PL_scopestack_max; |
403 | #endif |
392 | c->savestack = PL_savestack; |
404 | |
393 | c->savestack_ix = PL_savestack_ix; |
405 | New(54,PL_scopestack,16,I32); |
394 | c->savestack_max = PL_savestack_max; |
406 | PL_scopestack_ix = 0; |
395 | c->retstack = PL_retstack; |
407 | PL_scopestack_max = 16; |
396 | c->retstack_ix = PL_retstack_ix; |
408 | |
397 | c->retstack_max = PL_retstack_max; |
409 | New(54,PL_savestack,96,ANY); |
398 | c->curcop = PL_curcop; |
410 | PL_savestack_ix = 0; |
|
|
411 | PL_savestack_max = 96; |
|
|
412 | |
|
|
413 | #if !PERL_VERSION_ATLEAST (5,9,0) |
|
|
414 | New(54,PL_retstack,8,OP*); |
|
|
415 | PL_retstack_ix = 0; |
|
|
416 | PL_retstack_max = 8; |
|
|
417 | #endif |
399 | } |
418 | } |
400 | |
419 | |
401 | /* |
420 | /* |
402 | * destroy the stacks, the callchain etc... |
421 | * destroy the stacks, the callchain etc... |
403 | * still there is a memleak of 128 bytes... |
|
|
404 | */ |
422 | */ |
405 | STATIC void |
423 | static void |
406 | destroy_stacks(pTHX) |
424 | coro_destroy_stacks () |
407 | { |
425 | { |
|
|
426 | if (!IN_DESTRUCT) |
|
|
427 | { |
408 | /* is this ugly, I ask? */ |
428 | /* is this ugly, I ask? */ |
409 | while (PL_scopestack_ix) |
429 | LEAVE_SCOPE (0); |
410 | LEAVE; |
|
|
411 | |
430 | |
412 | /* sure it is, but more important: is it correct?? :/ */ |
431 | /* sure it is, but more important: is it correct?? :/ */ |
413 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
|
|
414 | FREETMPS; |
432 | FREETMPS; |
|
|
433 | |
|
|
434 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
|
|
435 | } |
415 | |
436 | |
416 | while (PL_curstackinfo->si_next) |
437 | while (PL_curstackinfo->si_next) |
417 | PL_curstackinfo = PL_curstackinfo->si_next; |
438 | PL_curstackinfo = PL_curstackinfo->si_next; |
418 | |
439 | |
419 | while (PL_curstackinfo) |
440 | while (PL_curstackinfo) |
420 | { |
441 | { |
421 | PERL_SI *p = PL_curstackinfo->si_prev; |
442 | PERL_SI *p = PL_curstackinfo->si_prev; |
422 | |
443 | |
423 | { |
444 | { /*D*//*remove*/ |
424 | dSP; |
445 | dSP; |
425 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
446 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
426 | PUTBACK; /* possibly superfluous */ |
447 | PUTBACK; /* possibly superfluous */ |
427 | } |
448 | } |
428 | |
449 | |
429 | dounwind(-1); |
450 | if (!IN_DESTRUCT) |
430 | |
451 | { |
|
|
452 | dounwind (-1);/*D*//*remove*/ |
431 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
453 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
|
|
454 | } |
|
|
455 | |
432 | Safefree(PL_curstackinfo->si_cxstack); |
456 | Safefree (PL_curstackinfo->si_cxstack); |
433 | Safefree(PL_curstackinfo); |
457 | Safefree (PL_curstackinfo); |
434 | PL_curstackinfo = p; |
458 | PL_curstackinfo = p; |
435 | } |
459 | } |
436 | |
460 | |
437 | Safefree(PL_tmps_stack); |
461 | Safefree (PL_tmps_stack); |
438 | Safefree(PL_markstack); |
462 | Safefree (PL_markstack); |
439 | Safefree(PL_scopestack); |
463 | Safefree (PL_scopestack); |
440 | Safefree(PL_savestack); |
464 | Safefree (PL_savestack); |
|
|
465 | #if !PERL_VERSION_ATLEAST (5,9,0) |
441 | Safefree(PL_retstack); |
466 | Safefree (PL_retstack); |
|
|
467 | #endif |
442 | } |
468 | } |
443 | |
469 | |
444 | STATIC void |
470 | static void |
445 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
471 | setup_coro (struct coro *coro) |
|
|
472 | { |
|
|
473 | /* |
|
|
474 | * emulate part of the perl startup here. |
|
|
475 | */ |
|
|
476 | |
|
|
477 | coro_init_stacks (); |
|
|
478 | |
|
|
479 | PL_curcop = 0; |
|
|
480 | PL_in_eval = 0; |
|
|
481 | PL_curpm = 0; |
|
|
482 | |
|
|
483 | { |
|
|
484 | dSP; |
|
|
485 | LOGOP myop; |
|
|
486 | |
|
|
487 | /* I have no idea why this is needed, but it is */ |
|
|
488 | PUSHMARK (SP); |
|
|
489 | |
|
|
490 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
491 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
492 | |
|
|
493 | Zero (&myop, 1, LOGOP); |
|
|
494 | myop.op_next = Nullop; |
|
|
495 | myop.op_flags = OPf_WANT_VOID; |
|
|
496 | |
|
|
497 | PL_op = (OP *)&myop; |
|
|
498 | |
|
|
499 | PUSHMARK (SP); |
|
|
500 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
|
|
501 | PUTBACK; |
|
|
502 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
503 | SPAGAIN; |
|
|
504 | |
|
|
505 | ENTER; /* necessary e.g. for dounwind */ |
|
|
506 | } |
|
|
507 | } |
|
|
508 | |
|
|
509 | static void |
|
|
510 | free_coro_mortal () |
|
|
511 | { |
|
|
512 | if (coro_mortal) |
|
|
513 | { |
|
|
514 | SvREFCNT_dec (coro_mortal); |
|
|
515 | coro_mortal = 0; |
|
|
516 | } |
|
|
517 | } |
|
|
518 | |
|
|
519 | static void NOINLINE |
|
|
520 | prepare_cctx (coro_cctx *cctx) |
446 | { |
521 | { |
447 | dSP; |
522 | dSP; |
|
|
523 | LOGOP myop; |
448 | |
524 | |
449 | if (prev != next) |
525 | Zero (&myop, 1, LOGOP); |
|
|
526 | myop.op_next = PL_op; |
|
|
527 | myop.op_flags = OPf_WANT_VOID; |
|
|
528 | |
|
|
529 | sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx)); |
|
|
530 | |
|
|
531 | PUSHMARK (SP); |
|
|
532 | XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
|
|
533 | PUTBACK; |
|
|
534 | PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
535 | SPAGAIN; |
|
|
536 | } |
|
|
537 | |
|
|
538 | static void |
|
|
539 | coro_run (void *arg) |
|
|
540 | { |
|
|
541 | /* coro_run is the alternative epilogue of transfer() */ |
|
|
542 | UNLOCK; |
|
|
543 | |
|
|
544 | /* |
|
|
545 | * this is a _very_ stripped down perl interpreter ;) |
|
|
546 | */ |
|
|
547 | PL_top_env = &PL_start_env; |
|
|
548 | |
|
|
549 | /* inject call to cctx_init */ |
|
|
550 | prepare_cctx ((coro_cctx *)arg); |
|
|
551 | |
|
|
552 | /* somebody will hit me for both perl_run and PL_restartop */ |
|
|
553 | perl_run (PL_curinterp); |
|
|
554 | |
|
|
555 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
|
|
556 | abort (); |
|
|
557 | } |
|
|
558 | |
|
|
559 | static coro_cctx * |
|
|
560 | cctx_new () |
|
|
561 | { |
|
|
562 | coro_cctx *cctx; |
|
|
563 | |
|
|
564 | ++cctx_count; |
|
|
565 | |
|
|
566 | New (0, cctx, 1, coro_cctx); |
|
|
567 | |
|
|
568 | #if HAVE_MMAP |
|
|
569 | |
|
|
570 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
|
|
571 | /* mmap suppsedly does allocate-on-write for us */ |
|
|
572 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
573 | |
|
|
574 | if (cctx->sptr == (void *)-1) |
450 | { |
575 | { |
451 | /* |
576 | perror ("FATAL: unable to mmap stack for coroutine"); |
452 | * this could be done in newprocess which would lead to |
577 | _exit (EXIT_FAILURE); |
453 | * extremely elegant and fast (just SAVE/LOAD) |
578 | } |
454 | * code here, but lazy allocation of stacks has also |
579 | |
455 | * some virtues and the overhead of the if() is nil. |
580 | # if STACKGUARD |
456 | */ |
581 | mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
582 | # endif |
|
|
583 | |
|
|
584 | #else |
|
|
585 | |
|
|
586 | cctx->ssize = STACKSIZE * (long)sizeof (long); |
|
|
587 | New (0, cctx->sptr, STACKSIZE, long); |
|
|
588 | |
|
|
589 | if (!cctx->sptr) |
|
|
590 | { |
|
|
591 | perror ("FATAL: unable to malloc stack for coroutine"); |
|
|
592 | _exit (EXIT_FAILURE); |
|
|
593 | } |
|
|
594 | |
|
|
595 | #endif |
|
|
596 | |
|
|
597 | #if USE_VALGRIND |
|
|
598 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ( |
|
|
599 | STACKGUARD * PAGESIZE + (char *)cctx->sptr, |
|
|
600 | cctx->ssize + (char *)cctx->sptr |
|
|
601 | ); |
|
|
602 | #endif |
|
|
603 | |
|
|
604 | coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize); |
|
|
605 | |
|
|
606 | return cctx; |
|
|
607 | } |
|
|
608 | |
|
|
609 | static void |
|
|
610 | cctx_free (coro_cctx *cctx) |
|
|
611 | { |
|
|
612 | if (!cctx) |
|
|
613 | return; |
|
|
614 | |
|
|
615 | --cctx_count; |
|
|
616 | |
|
|
617 | #if USE_VALGRIND |
|
|
618 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
619 | #endif |
|
|
620 | |
|
|
621 | #if HAVE_MMAP |
|
|
622 | munmap (cctx->sptr, cctx->ssize); |
|
|
623 | #else |
|
|
624 | Safefree (cctx->sptr); |
|
|
625 | #endif |
|
|
626 | |
|
|
627 | Safefree (cctx); |
|
|
628 | } |
|
|
629 | |
|
|
630 | static coro_cctx * |
|
|
631 | cctx_get () |
|
|
632 | { |
|
|
633 | coro_cctx *cctx; |
|
|
634 | |
|
|
635 | if (cctx_first) |
|
|
636 | { |
|
|
637 | --cctx_idle; |
|
|
638 | cctx = cctx_first; |
|
|
639 | cctx_first = cctx->next; |
|
|
640 | } |
|
|
641 | else |
|
|
642 | { |
|
|
643 | cctx = cctx_new (); |
|
|
644 | PL_op = PL_op->op_next; |
|
|
645 | } |
|
|
646 | |
|
|
647 | return cctx; |
|
|
648 | } |
|
|
649 | |
|
|
650 | static void |
|
|
651 | cctx_put (coro_cctx *cctx) |
|
|
652 | { |
|
|
653 | ++cctx_idle; |
|
|
654 | cctx->next = cctx_first; |
|
|
655 | cctx_first = cctx; |
|
|
656 | } |
|
|
657 | |
|
|
658 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
659 | static void NOINLINE |
|
|
660 | transfer (struct coro *prev, struct coro *next, int flags) |
|
|
661 | { |
|
|
662 | dSTACKLEVEL; |
|
|
663 | |
|
|
664 | /* sometimes transfer is only called to set idle_sp */ |
|
|
665 | if (flags == TRANSFER_SET_STACKLEVEL) |
|
|
666 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
667 | else if (prev != next) |
|
|
668 | { |
|
|
669 | coro_cctx *prev__cctx; |
|
|
670 | |
|
|
671 | LOCK; |
|
|
672 | |
457 | if (next->mainstack) |
673 | if (next->mainstack) |
458 | { |
674 | { |
|
|
675 | /* coroutine already started */ |
459 | SAVE (prev, flags); |
676 | SAVE (prev, flags); |
460 | LOAD (next); |
677 | LOAD (next); |
461 | /* mark this state as in-use */ |
|
|
462 | next->mainstack = 0; |
|
|
463 | next->tmps_ix = -2; |
|
|
464 | } |
|
|
465 | else if (next->tmps_ix == -2) |
|
|
466 | { |
|
|
467 | croak ("tried to transfer to running coroutine"); |
|
|
468 | } |
678 | } |
469 | else |
679 | else |
470 | { |
680 | { |
471 | /* |
681 | /* need to start coroutine */ |
472 | * emulate part of the perl startup here. |
|
|
473 | */ |
|
|
474 | UNOP myop; |
|
|
475 | |
|
|
476 | SAVE (prev, -1); /* first get rid of the old state */ |
682 | /* first get rid of the old state */ |
477 | |
683 | SAVE (prev, -1); |
478 | init_stacks (); /* from perl.c */ |
684 | /* setup coroutine call */ |
479 | SPAGAIN; |
685 | setup_coro (next); |
480 | |
686 | /* need a stack */ |
481 | PL_op = (OP *)&myop; |
687 | next->cctx = 0; |
482 | /*PL_curcop = 0;*/ |
|
|
483 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
484 | GvAV (PL_defgv) = next->args; |
|
|
485 | |
|
|
486 | Zero(&myop, 1, UNOP); |
|
|
487 | myop.op_next = Nullop; |
|
|
488 | myop.op_flags = OPf_WANT_VOID; |
|
|
489 | |
|
|
490 | PUSHMARK(SP); |
|
|
491 | XPUSHs ((SV*)get_cv(SUB_INIT, TRUE)); |
|
|
492 | /* |
|
|
493 | * the next line is slightly wrong, as PL_op->op_next |
|
|
494 | * is actually being executed so we skip the first op. |
|
|
495 | * that doesn't matter, though, since it is only |
|
|
496 | * pp_nextstate and we never return... |
|
|
497 | * ah yes, and I don't care anyways ;) |
|
|
498 | */ |
|
|
499 | PUTBACK; |
|
|
500 | PL_op = pp_entersub(aTHX); |
|
|
501 | SPAGAIN; |
|
|
502 | |
|
|
503 | ENTER; /* necessary e.g. for dounwind */ |
|
|
504 | } |
688 | } |
|
|
689 | |
|
|
690 | if (!prev->cctx) |
|
|
691 | /* create a new empty context */ |
|
|
692 | Newz (0, prev->cctx, 1, coro_cctx); |
|
|
693 | |
|
|
694 | prev__cctx = prev->cctx; |
|
|
695 | |
|
|
696 | /* possibly "free" the cctx */ |
|
|
697 | if (prev__cctx->idle_sp == STACKLEVEL) |
|
|
698 | { |
|
|
699 | assert (PL_top_env == prev__cctx->top_env);//D |
|
|
700 | cctx_put (prev__cctx); |
|
|
701 | prev->cctx = 0; |
|
|
702 | } |
|
|
703 | |
|
|
704 | if (!next->cctx) |
|
|
705 | next->cctx = cctx_get (); |
|
|
706 | |
|
|
707 | if (prev__cctx != next->cctx) |
|
|
708 | { |
|
|
709 | prev__cctx->top_env = PL_top_env; |
|
|
710 | PL_top_env = next->cctx->top_env; |
|
|
711 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
|
|
712 | } |
|
|
713 | |
|
|
714 | free_coro_mortal (); |
|
|
715 | |
|
|
716 | UNLOCK; |
505 | } |
717 | } |
506 | } |
718 | } |
507 | |
719 | |
|
|
720 | struct transfer_args |
|
|
721 | { |
|
|
722 | struct coro *prev, *next; |
|
|
723 | int flags; |
|
|
724 | }; |
|
|
725 | |
|
|
726 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
|
|
727 | |
|
|
728 | static void |
|
|
729 | coro_state_destroy (struct coro *coro) |
|
|
730 | { |
|
|
731 | if (coro->refcnt--) |
|
|
732 | return; |
|
|
733 | |
|
|
734 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
735 | { |
|
|
736 | struct coro temp; |
|
|
737 | |
|
|
738 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
|
|
739 | LOAD (coro); |
|
|
740 | |
|
|
741 | coro_destroy_stacks (); |
|
|
742 | |
|
|
743 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
744 | |
|
|
745 | coro->mainstack = 0; |
|
|
746 | } |
|
|
747 | |
|
|
748 | cctx_free (coro->cctx); |
|
|
749 | SvREFCNT_dec (coro->args); |
|
|
750 | Safefree (coro); |
|
|
751 | } |
|
|
752 | |
|
|
753 | static int |
|
|
754 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
|
|
755 | { |
|
|
756 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
757 | mg->mg_ptr = 0; |
|
|
758 | |
|
|
759 | coro_state_destroy (coro); |
|
|
760 | |
|
|
761 | return 0; |
|
|
762 | } |
|
|
763 | |
|
|
764 | static int |
|
|
765 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
766 | { |
|
|
767 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
768 | |
|
|
769 | ++coro->refcnt; |
|
|
770 | |
|
|
771 | return 0; |
|
|
772 | } |
|
|
773 | |
|
|
774 | static MGVTBL coro_state_vtbl = { |
|
|
775 | 0, 0, 0, 0, |
|
|
776 | coro_state_clear, |
|
|
777 | 0, |
|
|
778 | #ifdef MGf_DUP |
|
|
779 | coro_state_dup, |
|
|
780 | #else |
|
|
781 | # define MGf_DUP 0 |
|
|
782 | #endif |
|
|
783 | }; |
|
|
784 | |
|
|
785 | static struct coro * |
|
|
786 | SvSTATE (SV *coro) |
|
|
787 | { |
|
|
788 | HV *stash; |
|
|
789 | MAGIC *mg; |
|
|
790 | |
|
|
791 | if (SvROK (coro)) |
|
|
792 | coro = SvRV (coro); |
|
|
793 | |
|
|
794 | stash = SvSTASH (coro); |
|
|
795 | if (stash != coro_stash && stash != coro_state_stash) |
|
|
796 | { |
|
|
797 | /* very slow, but rare, check */ |
|
|
798 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
799 | croak ("Coro::State object required"); |
|
|
800 | } |
|
|
801 | |
|
|
802 | mg = SvMAGIC (coro); |
|
|
803 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
804 | return (struct coro *)mg->mg_ptr; |
|
|
805 | } |
|
|
806 | |
|
|
807 | static void |
|
|
808 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
|
|
809 | { |
|
|
810 | ta->prev = SvSTATE (prev); |
|
|
811 | ta->next = SvSTATE (next); |
|
|
812 | ta->flags = flags; |
|
|
813 | } |
|
|
814 | |
|
|
815 | static void |
|
|
816 | api_transfer (SV *prev, SV *next, int flags) |
|
|
817 | { |
|
|
818 | dTHX; |
|
|
819 | struct transfer_args ta; |
|
|
820 | |
|
|
821 | prepare_transfer (&ta, prev, next, flags); |
|
|
822 | TRANSFER (ta); |
|
|
823 | } |
|
|
824 | |
|
|
825 | /** Coro ********************************************************************/ |
|
|
826 | |
|
|
827 | #define PRIO_MAX 3 |
|
|
828 | #define PRIO_HIGH 1 |
|
|
829 | #define PRIO_NORMAL 0 |
|
|
830 | #define PRIO_LOW -1 |
|
|
831 | #define PRIO_IDLE -3 |
|
|
832 | #define PRIO_MIN -4 |
|
|
833 | |
|
|
834 | /* for Coro.pm */ |
|
|
835 | static GV *coro_current, *coro_idle; |
|
|
836 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
|
|
837 | static int coro_nready; |
|
|
838 | |
|
|
839 | static void |
|
|
840 | coro_enq (SV *sv) |
|
|
841 | { |
|
|
842 | int prio; |
|
|
843 | |
|
|
844 | if (SvTYPE (sv) != SVt_PVHV) |
|
|
845 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
846 | |
|
|
847 | prio = SvSTATE (sv)->prio; |
|
|
848 | |
|
|
849 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
850 | coro_nready++; |
|
|
851 | } |
|
|
852 | |
|
|
853 | static SV * |
|
|
854 | coro_deq (int min_prio) |
|
|
855 | { |
|
|
856 | int prio = PRIO_MAX - PRIO_MIN; |
|
|
857 | |
|
|
858 | min_prio -= PRIO_MIN; |
|
|
859 | if (min_prio < 0) |
|
|
860 | min_prio = 0; |
|
|
861 | |
|
|
862 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
|
|
863 | if (AvFILLp (coro_ready [prio]) >= 0) |
|
|
864 | { |
|
|
865 | coro_nready--; |
|
|
866 | return av_shift (coro_ready [prio]); |
|
|
867 | } |
|
|
868 | |
|
|
869 | return 0; |
|
|
870 | } |
|
|
871 | |
|
|
872 | static void |
|
|
873 | api_ready (SV *coro) |
|
|
874 | { |
|
|
875 | dTHX; |
|
|
876 | |
|
|
877 | if (SvROK (coro)) |
|
|
878 | coro = SvRV (coro); |
|
|
879 | |
|
|
880 | LOCK; |
|
|
881 | coro_enq (SvREFCNT_inc (coro)); |
|
|
882 | UNLOCK; |
|
|
883 | } |
|
|
884 | |
|
|
885 | static void |
|
|
886 | prepare_schedule (struct transfer_args *ta) |
|
|
887 | { |
|
|
888 | SV *current, *prev, *next; |
|
|
889 | |
|
|
890 | current = GvSV (coro_current); |
|
|
891 | |
|
|
892 | for (;;) |
|
|
893 | { |
|
|
894 | LOCK; |
|
|
895 | next = coro_deq (PRIO_MIN); |
|
|
896 | UNLOCK; |
|
|
897 | |
|
|
898 | if (next) |
|
|
899 | break; |
|
|
900 | |
|
|
901 | { |
|
|
902 | dSP; |
|
|
903 | |
|
|
904 | ENTER; |
|
|
905 | SAVETMPS; |
|
|
906 | |
|
|
907 | PUSHMARK (SP); |
|
|
908 | PUTBACK; |
|
|
909 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
910 | |
|
|
911 | FREETMPS; |
|
|
912 | LEAVE; |
|
|
913 | } |
|
|
914 | } |
|
|
915 | |
|
|
916 | prev = SvRV (current); |
|
|
917 | SvRV (current) = next; |
|
|
918 | |
|
|
919 | /* free this only after the transfer */ |
|
|
920 | LOCK; |
|
|
921 | free_coro_mortal (); |
|
|
922 | UNLOCK; |
|
|
923 | coro_mortal = prev; |
|
|
924 | |
|
|
925 | ta->prev = SvSTATE (prev); |
|
|
926 | ta->next = SvSTATE (next); |
|
|
927 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
928 | } |
|
|
929 | |
|
|
930 | static void |
|
|
931 | prepare_cede (struct transfer_args *ta) |
|
|
932 | { |
|
|
933 | LOCK; |
|
|
934 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
935 | UNLOCK; |
|
|
936 | |
|
|
937 | prepare_schedule (ta); |
|
|
938 | } |
|
|
939 | |
|
|
940 | static void |
|
|
941 | api_schedule (void) |
|
|
942 | { |
|
|
943 | dTHX; |
|
|
944 | struct transfer_args ta; |
|
|
945 | |
|
|
946 | prepare_schedule (&ta); |
|
|
947 | TRANSFER (ta); |
|
|
948 | } |
|
|
949 | |
|
|
950 | static void |
|
|
951 | api_cede (void) |
|
|
952 | { |
|
|
953 | dTHX; |
|
|
954 | struct transfer_args ta; |
|
|
955 | |
|
|
956 | prepare_cede (&ta); |
|
|
957 | TRANSFER (ta); |
|
|
958 | } |
|
|
959 | |
508 | MODULE = Coro::State PACKAGE = Coro::State |
960 | MODULE = Coro::State PACKAGE = Coro::State |
509 | |
961 | |
510 | PROTOTYPES: ENABLE |
962 | PROTOTYPES: DISABLE |
511 | |
963 | |
512 | BOOT: |
964 | BOOT: |
513 | { /* {} necessary for stoopid perl-5.6.x */ |
965 | { |
|
|
966 | #ifdef USE_ITHREADS |
|
|
967 | MUTEX_INIT (&coro_mutex); |
|
|
968 | #endif |
|
|
969 | BOOT_PAGESIZE; |
|
|
970 | |
514 | HV * stash = gv_stashpvn("Coro::State", 10, TRUE); |
971 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
515 | |
972 | |
516 | newCONSTSUB (stash, "SAVE_DEFAV", newSViv (SAVE_DEFAV)); |
973 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
517 | newCONSTSUB (stash, "SAVE_DEFSV", newSViv (SAVE_DEFSV)); |
974 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
518 | newCONSTSUB (stash, "SAVE_ERRSV", newSViv (SAVE_ERRSV)); |
975 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
519 | |
976 | |
520 | if (!padlist_cache) |
977 | main_mainstack = PL_mainstack; |
521 | padlist_cache = newHV (); |
|
|
522 | } |
|
|
523 | |
978 | |
524 | Coro::State |
979 | coroapi.ver = CORO_API_VERSION; |
525 | _newprocess(args) |
980 | coroapi.transfer = api_transfer; |
526 | SV * args |
981 | |
527 | PROTOTYPE: $ |
982 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
|
|
983 | } |
|
|
984 | |
|
|
985 | SV * |
|
|
986 | new (char *klass, ...) |
528 | CODE: |
987 | CODE: |
529 | Coro__State coro; |
988 | { |
|
|
989 | struct coro *coro; |
|
|
990 | HV *hv; |
|
|
991 | int i; |
530 | |
992 | |
531 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
|
|
532 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
533 | |
|
|
534 | New (0, coro, 1, struct coro); |
993 | Newz (0, coro, 1, struct coro); |
|
|
994 | coro->args = newAV (); |
535 | |
995 | |
536 | coro->mainstack = 0; /* actual work is done inside transfer */ |
996 | hv = newHV (); |
537 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
997 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
|
|
998 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
538 | |
999 | |
539 | RETVAL = coro; |
1000 | for (i = 1; i < items; i++) |
|
|
1001 | av_push (coro->args, newSVsv (ST (i))); |
|
|
1002 | } |
540 | OUTPUT: |
1003 | OUTPUT: |
541 | RETVAL |
1004 | RETVAL |
542 | |
1005 | |
543 | void |
1006 | void |
544 | transfer(prev, next, flags = SAVE_DEFAV) |
1007 | _set_stacklevel (...) |
545 | Coro::State_or_hashref prev |
1008 | ALIAS: |
546 | Coro::State_or_hashref next |
1009 | Coro::State::transfer = 1 |
547 | int flags |
1010 | Coro::schedule = 2 |
548 | PROTOTYPE: @ |
1011 | Coro::cede = 3 |
|
|
1012 | Coro::Cont::yield = 4 |
549 | CODE: |
1013 | CODE: |
|
|
1014 | { |
|
|
1015 | struct transfer_args ta; |
550 | |
1016 | |
551 | transfer (aTHX_ prev, next, flags); |
1017 | switch (ix) |
|
|
1018 | { |
|
|
1019 | case 0: |
|
|
1020 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
|
|
1021 | ta.next = 0; |
|
|
1022 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1023 | break; |
|
|
1024 | |
|
|
1025 | case 1: |
|
|
1026 | if (items != 3) |
|
|
1027 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
|
|
1028 | |
|
|
1029 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1030 | break; |
|
|
1031 | |
|
|
1032 | case 2: |
|
|
1033 | prepare_schedule (&ta); |
|
|
1034 | break; |
|
|
1035 | |
|
|
1036 | case 3: |
|
|
1037 | prepare_cede (&ta); |
|
|
1038 | break; |
|
|
1039 | |
|
|
1040 | case 4: |
|
|
1041 | { |
|
|
1042 | SV *yieldstack; |
|
|
1043 | SV *sv; |
|
|
1044 | AV *defav = GvAV (PL_defgv); |
|
|
1045 | |
|
|
1046 | yieldstack = *hv_fetch ( |
|
|
1047 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1048 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1049 | 0 |
|
|
1050 | ); |
|
|
1051 | |
|
|
1052 | /* set up @_ -- ugly */ |
|
|
1053 | av_clear (defav); |
|
|
1054 | av_fill (defav, items - 1); |
|
|
1055 | while (items--) |
|
|
1056 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1057 | |
|
|
1058 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1059 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1060 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1061 | ta.flags = 0; |
|
|
1062 | SvREFCNT_dec (sv); |
|
|
1063 | } |
|
|
1064 | break; |
|
|
1065 | |
|
|
1066 | } |
|
|
1067 | |
|
|
1068 | TRANSFER (ta); |
|
|
1069 | } |
552 | |
1070 | |
553 | void |
1071 | void |
554 | DESTROY(coro) |
1072 | _clone_state_from (SV *dst, SV *src) |
555 | Coro::State coro |
1073 | CODE: |
|
|
1074 | { |
|
|
1075 | struct coro *coro_src = SvSTATE (src); |
|
|
1076 | |
|
|
1077 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
|
|
1078 | |
|
|
1079 | ++coro_src->refcnt; |
|
|
1080 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
|
|
1081 | } |
|
|
1082 | |
|
|
1083 | void |
|
|
1084 | _exit (code) |
|
|
1085 | int code |
|
|
1086 | PROTOTYPE: $ |
|
|
1087 | CODE: |
|
|
1088 | _exit (code); |
|
|
1089 | |
|
|
1090 | int |
|
|
1091 | cctx_count () |
|
|
1092 | CODE: |
|
|
1093 | RETVAL = cctx_count; |
|
|
1094 | OUTPUT: |
|
|
1095 | RETVAL |
|
|
1096 | |
|
|
1097 | int |
|
|
1098 | cctx_idle () |
|
|
1099 | CODE: |
|
|
1100 | RETVAL = cctx_idle; |
|
|
1101 | OUTPUT: |
|
|
1102 | RETVAL |
|
|
1103 | |
|
|
1104 | MODULE = Coro::State PACKAGE = Coro |
|
|
1105 | |
|
|
1106 | BOOT: |
|
|
1107 | { |
|
|
1108 | int i; |
|
|
1109 | |
|
|
1110 | coro_stash = gv_stashpv ("Coro", TRUE); |
|
|
1111 | |
|
|
1112 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
|
|
1113 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
|
|
1114 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
|
|
1115 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
|
|
1116 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
|
|
1117 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
|
|
1118 | |
|
|
1119 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1120 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1121 | |
|
|
1122 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
|
|
1123 | coro_ready[i] = newAV (); |
|
|
1124 | |
|
|
1125 | { |
|
|
1126 | SV *sv = perl_get_sv("Coro::API", 1); |
|
|
1127 | |
|
|
1128 | coroapi.schedule = api_schedule; |
|
|
1129 | coroapi.cede = api_cede; |
|
|
1130 | coroapi.ready = api_ready; |
|
|
1131 | coroapi.nready = &coro_nready; |
|
|
1132 | coroapi.current = coro_current; |
|
|
1133 | |
|
|
1134 | GCoroAPI = &coroapi; |
|
|
1135 | sv_setiv (sv, (IV)&coroapi); |
|
|
1136 | SvREADONLY_on (sv); |
|
|
1137 | } |
|
|
1138 | } |
|
|
1139 | |
|
|
1140 | int |
|
|
1141 | prio (Coro::State coro, int newprio = 0) |
|
|
1142 | ALIAS: |
|
|
1143 | nice = 1 |
556 | CODE: |
1144 | CODE: |
|
|
1145 | { |
|
|
1146 | RETVAL = coro->prio; |
557 | |
1147 | |
558 | if (coro->mainstack) |
1148 | if (items > 1) |
559 | { |
1149 | { |
560 | struct coro temp; |
1150 | if (ix) |
|
|
1151 | newprio += coro->prio; |
561 | |
1152 | |
562 | SAVE(aTHX_ (&temp), SAVE_ALL); |
1153 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
563 | LOAD(aTHX_ coro); |
1154 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
564 | |
1155 | |
565 | destroy_stacks (); |
1156 | coro->prio = newprio; |
566 | |
|
|
567 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
|
|
568 | } |
1157 | } |
569 | |
1158 | } |
570 | Safefree (coro); |
|
|
571 | |
1159 | |
572 | void |
1160 | void |
573 | flush() |
1161 | ready (SV *self) |
|
|
1162 | PROTOTYPE: $ |
574 | CODE: |
1163 | CODE: |
575 | #ifdef MAY_FLUSH |
1164 | api_ready (self); |
576 | flush_padlist_cache (); |
|
|
577 | #endif |
|
|
578 | |
1165 | |
|
|
1166 | int |
|
|
1167 | nready (...) |
|
|
1168 | PROTOTYPE: |
|
|
1169 | CODE: |
|
|
1170 | RETVAL = coro_nready; |
|
|
1171 | OUTPUT: |
|
|
1172 | RETVAL |
|
|
1173 | |
579 | MODULE = Coro::State PACKAGE = Coro::Cont |
1174 | MODULE = Coro::State PACKAGE = Coro::AIO |
580 | |
1175 | |
581 | # this is dirty and should be in it's own .xs |
1176 | SV * |
|
|
1177 | _get_state () |
|
|
1178 | CODE: |
|
|
1179 | { |
|
|
1180 | struct { |
|
|
1181 | int errorno; |
|
|
1182 | int laststype; |
|
|
1183 | int laststatval; |
|
|
1184 | Stat_t statcache; |
|
|
1185 | } data; |
|
|
1186 | |
|
|
1187 | data.errorno = errno; |
|
|
1188 | data.laststype = PL_laststype; |
|
|
1189 | data.laststatval = PL_laststatval; |
|
|
1190 | data.statcache = PL_statcache; |
|
|
1191 | |
|
|
1192 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1193 | } |
|
|
1194 | OUTPUT: |
|
|
1195 | RETVAL |
582 | |
1196 | |
583 | void |
1197 | void |
584 | result(...) |
1198 | _set_state (char *data_) |
585 | PROTOTYPE: @ |
1199 | PROTOTYPE: $ |
586 | CODE: |
1200 | CODE: |
587 | static SV *returnstk; |
1201 | { |
588 | SV *sv; |
1202 | struct { |
589 | AV *defav = GvAV (PL_defgv); |
1203 | int errorno; |
590 | struct coro *prev, *next; |
1204 | int laststype; |
|
|
1205 | int laststatval; |
|
|
1206 | Stat_t statcache; |
|
|
1207 | } *data = (void *)data_; |
591 | |
1208 | |
592 | if (!returnstk) |
1209 | errno = data->errorno; |
593 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
1210 | PL_laststype = data->laststype; |
594 | |
1211 | PL_laststatval = data->laststatval; |
595 | /* set up @_ */ |
1212 | PL_statcache = data->statcache; |
596 | av_clear (defav); |
1213 | } |
597 | av_fill (defav, items - 1); |
|
|
598 | while (items--) |
|
|
599 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
600 | |
|
|
601 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
602 | sv = av_pop ((AV *)SvRV (returnstk)); |
|
|
603 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
604 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
605 | SvREFCNT_dec (sv); |
|
|
606 | transfer(prev, next, 0); |
|
|
607 | |
|
|