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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 | #include "libcoro/coro.c" |
7 | #include "patchlevel.h" |
6 | |
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 | |
7 | #include <signal.h> |
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 |
8 | |
50 | |
9 | #ifdef HAVE_MMAP |
51 | #ifdef HAVE_MMAP |
10 | # include <unistd.h> |
52 | # include <unistd.h> |
11 | # include <sys/mman.h> |
53 | # include <sys/mman.h> |
12 | # ifndef MAP_ANON |
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13 | # ifdef MAP_ANONYMOUS |
54 | # ifndef MAP_ANONYMOUS |
14 | # define MAP_ANON MAP_ANONYMOUS |
55 | # ifdef MAP_ANON |
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56 | # define MAP_ANONYMOUS MAP_ANON |
15 | # else |
57 | # else |
16 | # undef HAVE_MMAP |
58 | # undef HAVE_MMAP |
17 | # endif |
59 | # endif |
18 | # endif |
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 |
19 | #endif |
68 | # endif |
20 | |
69 | #else |
21 | #define MAY_FLUSH /* increases codesize and is rarely used */ |
70 | # define PAGESIZE 0 |
22 | |
71 | # define BOOT_PAGESIZE (void)0 |
23 | #define SUB_INIT "Coro::State::initialize" |
72 | #endif |
24 | #define UCORO_STATE "_coro_state" |
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25 | |
73 | |
26 | /* The next macro should declare a variable stacklevel that contains and approximation |
74 | /* The next macro should declare a variable stacklevel that contains and approximation |
27 | * to the current C stack pointer. Its property is that it changes with each call |
75 | * to the current C stack pointer. Its property is that it changes with each call |
28 | * and should be unique. */ |
76 | * and should be unique. */ |
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77 | #define dSTACKLEVEL int stacklevel |
29 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
78 | #define STACKLEVEL ((void *)&stacklevel) |
30 | |
79 | |
31 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
80 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
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81 | |
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82 | #if __GNUC__ >= 3 |
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83 | # define attribute(x) __attribute__(x) |
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84 | #else |
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85 | # define attribute(x) |
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86 | #endif |
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87 | |
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88 | #define NOINLINE attribute ((noinline)) |
32 | |
89 | |
33 | #include "CoroAPI.h" |
90 | #include "CoroAPI.h" |
34 | |
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 | |
35 | static struct CoroAPI coroapi; |
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 */ |
36 | |
107 | |
37 | /* this is actually not only the c stack but also c registers etc... */ |
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 */ |
38 | typedef struct { |
112 | typedef struct coro_cctx { |
39 | int refcnt; /* pointer reference counter */ |
113 | struct coro_cctx *next; |
40 | int usecnt; /* shared by how many coroutines */ |
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41 | int gencnt; /* generation counter */ |
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42 | |
114 | |
43 | coro_context cctx; |
115 | /* the stack */ |
44 | |
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45 | void *sptr; |
116 | void *sptr; |
46 | long ssize; /* positive == mmap, otherwise malloc */ |
117 | long ssize; /* positive == mmap, otherwise malloc */ |
47 | } coro_stack; |
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48 | |
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 | int inuse; |
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125 | |
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126 | #if USE_VALGRIND |
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127 | int valgrind_id; |
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128 | #endif |
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129 | } coro_cctx; |
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130 | |
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131 | enum { |
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132 | CF_RUNNING, /* coroutine is running */ |
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133 | CF_READY, /* coroutine is ready */ |
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134 | }; |
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135 | |
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136 | /* this is a structure representing a perl-level coroutine */ |
49 | struct coro { |
137 | struct coro { |
50 | /* the optional C context */ |
138 | /* the c coroutine allocated to this perl coroutine, if any */ |
51 | coro_stack *stack; |
139 | coro_cctx *cctx; |
52 | void *cursp; |
140 | |
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141 | /* data associated with this coroutine (initial args) */ |
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142 | AV *args; |
53 | int gencnt; |
143 | int refcnt; |
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144 | int flags; |
54 | |
145 | |
55 | /* optionally saved, might be zero */ |
146 | /* optionally saved, might be zero */ |
56 | AV *defav; |
147 | AV *defav; |
57 | SV *defsv; |
148 | SV *defsv; |
58 | SV *errsv; |
149 | SV *errsv; |
59 | |
150 | |
60 | /* saved global state not related to stacks */ |
151 | #define VAR(name,type) type name; |
61 | U8 dowarn; |
152 | # include "state.h" |
62 | I32 in_eval; |
153 | #undef VAR |
63 | |
154 | |
64 | /* the stacks and related info (callchain etc..) */ |
155 | /* coro process data */ |
65 | PERL_SI *curstackinfo; |
156 | int prio; |
66 | AV *curstack; |
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67 | AV *mainstack; |
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68 | SV **stack_sp; |
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69 | OP *op; |
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70 | SV **curpad; |
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71 | SV **stack_base; |
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72 | SV **stack_max; |
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73 | SV **tmps_stack; |
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74 | I32 tmps_floor; |
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75 | I32 tmps_ix; |
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76 | I32 tmps_max; |
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77 | I32 *markstack; |
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78 | I32 *markstack_ptr; |
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79 | I32 *markstack_max; |
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80 | I32 *scopestack; |
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81 | I32 scopestack_ix; |
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82 | I32 scopestack_max; |
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83 | ANY *savestack; |
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84 | I32 savestack_ix; |
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85 | I32 savestack_max; |
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86 | OP **retstack; |
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87 | I32 retstack_ix; |
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88 | I32 retstack_max; |
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89 | COP *curcop; |
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90 | JMPENV *top_env; |
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91 | |
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92 | /* data associated with this coroutine (initial args) */ |
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93 | AV *args; |
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94 | }; |
157 | }; |
95 | |
158 | |
96 | typedef struct coro *Coro__State; |
159 | typedef struct coro *Coro__State; |
97 | typedef struct coro *Coro__State_or_hashref; |
160 | typedef struct coro *Coro__State_or_hashref; |
98 | |
161 | |
99 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
162 | static AV * |
100 | static HV *coro_state_stash; |
163 | coro_clone_padlist (CV *cv) |
101 | static SV *ucoro_state_sv; |
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102 | static U32 ucoro_state_hash; |
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103 | static HV *padlist_cache; |
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104 | |
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105 | /* mostly copied from op.c:cv_clone2 */ |
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106 | STATIC AV * |
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107 | clone_padlist (AV *protopadlist) |
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108 | { |
164 | { |
109 | AV *av; |
165 | AV *padlist = CvPADLIST (cv); |
110 | I32 ix; |
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111 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
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112 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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113 | SV **pname = AvARRAY (protopad_name); |
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114 | SV **ppad = AvARRAY (protopad); |
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115 | I32 fname = AvFILLp (protopad_name); |
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116 | I32 fpad = AvFILLp (protopad); |
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117 | AV *newpadlist, *newpad_name, *newpad; |
166 | AV *newpadlist, *newpad; |
118 | SV **npad; |
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119 | |
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120 | newpad_name = newAV (); |
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121 | for (ix = fname; ix >= 0; ix--) |
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122 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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123 | |
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124 | newpad = newAV (); |
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125 | av_fill (newpad, AvFILLp (protopad)); |
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126 | npad = AvARRAY (newpad); |
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127 | |
167 | |
128 | newpadlist = newAV (); |
168 | newpadlist = newAV (); |
129 | AvREAL_off (newpadlist); |
169 | AvREAL_off (newpadlist); |
130 | av_store (newpadlist, 0, (SV *) newpad_name); |
170 | #if PERL_VERSION_ATLEAST (5,9,0) |
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171 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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172 | #else |
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173 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
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174 | #endif |
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175 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
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176 | --AvFILLp (padlist); |
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177 | |
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178 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
131 | av_store (newpadlist, 1, (SV *) newpad); |
179 | av_store (newpadlist, 1, (SV *)newpad); |
132 | |
180 | |
133 | av = newAV (); /* will be @_ */ |
181 | return newpadlist; |
134 | av_extend (av, 0); |
182 | } |
135 | av_store (newpad, 0, (SV *) av); |
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136 | AvFLAGS (av) = AVf_REIFY; |
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137 | |
183 | |
138 | for (ix = fpad; ix > 0; ix--) |
184 | static void |
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185 | free_padlist (AV *padlist) |
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186 | { |
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187 | /* may be during global destruction */ |
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188 | if (SvREFCNT (padlist)) |
139 | { |
189 | { |
140 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
190 | I32 i = AvFILLp (padlist); |
141 | if (namesv && namesv != &PL_sv_undef) |
191 | while (i >= 0) |
142 | { |
192 | { |
143 | char *name = SvPVX (namesv); /* XXX */ |
193 | SV **svp = av_fetch (padlist, i--, FALSE); |
144 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
194 | if (svp) |
145 | { /* lexical from outside? */ |
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146 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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147 | } |
195 | { |
148 | else |
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149 | { /* our own lexical */ |
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150 | SV *sv; |
196 | SV *sv; |
151 | if (*name == '&') |
197 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
152 | sv = SvREFCNT_inc (ppad[ix]); |
198 | SvREFCNT_dec (sv); |
153 | else if (*name == '@') |
199 | |
154 | sv = (SV *) newAV (); |
200 | SvREFCNT_dec (*svp); |
155 | else if (*name == '%') |
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156 | sv = (SV *) newHV (); |
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157 | else |
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158 | sv = NEWSV (0, 0); |
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159 | if (!SvPADBUSY (sv)) |
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160 | SvPADMY_on (sv); |
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161 | npad[ix] = sv; |
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162 | } |
201 | } |
163 | } |
202 | } |
164 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
203 | |
165 | { |
204 | SvREFCNT_dec ((SV*)padlist); |
166 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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167 | } |
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168 | else |
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169 | { |
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170 | SV *sv = NEWSV (0, 0); |
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171 | SvPADTMP_on (sv); |
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172 | npad[ix] = sv; |
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173 | } |
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174 | } |
205 | } |
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206 | } |
175 | |
207 | |
176 | #if 0 /* return -ENOTUNDERSTOOD */ |
208 | static int |
177 | /* Now that vars are all in place, clone nested closures. */ |
209 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
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210 | { |
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211 | AV *padlist; |
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212 | AV *av = (AV *)mg->mg_obj; |
178 | |
213 | |
179 | for (ix = fpad; ix > 0; ix--) { |
214 | /* casting is fun. */ |
180 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
215 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
181 | if (namesv |
216 | free_padlist (padlist); |
182 | && namesv != &PL_sv_undef |
217 | |
183 | && !(SvFLAGS(namesv) & SVf_FAKE) |
218 | SvREFCNT_dec (av); |
184 | && *SvPVX(namesv) == '&' |
219 | |
185 | && CvCLONE(ppad[ix])) |
220 | return 0; |
186 | { |
221 | } |
187 | CV *kid = cv_clone((CV*)ppad[ix]); |
222 | |
188 | SvREFCNT_dec(ppad[ix]); |
223 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
189 | CvCLONE_on(kid); |
224 | |
190 | SvPADMY_on(kid); |
225 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
191 | npad[ix] = (SV*)kid; |
226 | |
192 | } |
227 | #define CORO_MAGIC(cv) \ |
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228 | SvMAGIC (cv) \ |
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229 | ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
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230 | ? SvMAGIC (cv) \ |
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231 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
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232 | : 0 |
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233 | |
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234 | /* the next two functions merely cache the padlists */ |
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235 | static void |
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236 | get_padlist (CV *cv) |
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237 | { |
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238 | MAGIC *mg = CORO_MAGIC (cv); |
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239 | AV *av; |
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240 | |
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241 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
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242 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
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243 | else |
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244 | { |
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245 | #if 0 |
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246 | /* this is probably cleaner, but also slower? */ |
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247 | CV *cp = Perl_cv_clone (cv); |
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248 | CvPADLIST (cv) = CvPADLIST (cp); |
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249 | CvPADLIST (cp) = 0; |
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250 | SvREFCNT_dec (cp); |
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251 | #else |
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252 | CvPADLIST (cv) = coro_clone_padlist (cv); |
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253 | #endif |
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254 | } |
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255 | } |
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256 | |
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257 | static void |
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258 | put_padlist (CV *cv) |
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259 | { |
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260 | MAGIC *mg = CORO_MAGIC (cv); |
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261 | AV *av; |
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262 | |
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263 | if (!mg) |
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264 | { |
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265 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
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266 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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267 | mg->mg_virtual = &vtbl_coro; |
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268 | mg->mg_obj = (SV *)newAV (); |
193 | } |
269 | } |
194 | #endif |
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195 | |
270 | |
196 | return newpadlist; |
271 | av = (AV *)mg->mg_obj; |
197 | } |
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198 | |
272 | |
199 | #ifdef MAY_FLUSH |
273 | if (AvFILLp (av) >= AvMAX (av)) |
200 | STATIC void |
274 | av_extend (av, AvMAX (av) + 1); |
201 | free_padlist (AV *padlist) |
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202 | { |
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203 | /* may be during global destruction */ |
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204 | if (SvREFCNT(padlist)) |
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205 | { |
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206 | I32 i = AvFILLp(padlist); |
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207 | while (i >= 0) |
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208 | { |
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209 | SV **svp = av_fetch(padlist, i--, FALSE); |
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210 | SV *sv = svp ? *svp : Nullsv; |
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211 | if (sv) |
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212 | SvREFCNT_dec(sv); |
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213 | } |
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214 | |
275 | |
215 | SvREFCNT_dec((SV*)padlist); |
276 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
216 | } |
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217 | } |
277 | } |
218 | #endif |
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219 | |
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220 | /* the next two functions merely cache the padlists */ |
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221 | STATIC void |
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222 | get_padlist (CV *cv) |
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223 | { |
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224 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
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225 | |
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226 | if (he && AvFILLp ((AV *)*he) >= 0) |
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227 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
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228 | else |
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229 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
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230 | } |
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231 | |
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232 | STATIC void |
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233 | put_padlist (CV *cv) |
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234 | { |
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235 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
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236 | |
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237 | if (SvTYPE (*he) != SVt_PVAV) |
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238 | { |
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239 | SvREFCNT_dec (*he); |
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240 | *he = (SV *)newAV (); |
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241 | } |
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242 | |
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243 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
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244 | } |
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245 | |
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246 | #ifdef MAY_FLUSH |
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247 | STATIC void |
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248 | flush_padlist_cache () |
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249 | { |
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250 | HV *hv = padlist_cache; |
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251 | padlist_cache = newHV (); |
|
|
252 | |
|
|
253 | if (hv_iterinit (hv)) |
|
|
254 | { |
|
|
255 | HE *he; |
|
|
256 | AV *padlist; |
|
|
257 | |
|
|
258 | while (!!(he = hv_iternext (hv))) |
|
|
259 | { |
|
|
260 | AV *av = (AV *)HeVAL(he); |
|
|
261 | |
|
|
262 | /* casting is fun. */ |
|
|
263 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
|
|
264 | free_padlist (padlist); |
|
|
265 | } |
|
|
266 | } |
|
|
267 | |
|
|
268 | SvREFCNT_dec (hv); |
|
|
269 | } |
|
|
270 | #endif |
|
|
271 | |
278 | |
272 | #define SB do { |
279 | #define SB do { |
273 | #define SE } while (0) |
280 | #define SE } while (0) |
274 | |
281 | |
275 | #define LOAD(state) load_state(aTHX_ (state)); |
282 | #define LOAD(state) load_state((state)); |
276 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
283 | #define SAVE(state,flags) save_state((state),(flags)); |
277 | |
284 | |
278 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
285 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
279 | |
286 | |
280 | static void |
287 | static void |
281 | load_state(pTHX_ Coro__State c) |
288 | load_state(Coro__State c) |
282 | { |
289 | { |
283 | PL_dowarn = c->dowarn; |
290 | #define VAR(name,type) PL_ ## name = c->name; |
284 | PL_in_eval = c->in_eval; |
291 | # include "state.h" |
285 | |
292 | #undef VAR |
286 | PL_curstackinfo = c->curstackinfo; |
|
|
287 | PL_curstack = c->curstack; |
|
|
288 | PL_mainstack = c->mainstack; |
|
|
289 | PL_stack_sp = c->stack_sp; |
|
|
290 | PL_op = c->op; |
|
|
291 | PL_curpad = c->curpad; |
|
|
292 | PL_stack_base = c->stack_base; |
|
|
293 | PL_stack_max = c->stack_max; |
|
|
294 | PL_tmps_stack = c->tmps_stack; |
|
|
295 | PL_tmps_floor = c->tmps_floor; |
|
|
296 | PL_tmps_ix = c->tmps_ix; |
|
|
297 | PL_tmps_max = c->tmps_max; |
|
|
298 | PL_markstack = c->markstack; |
|
|
299 | PL_markstack_ptr = c->markstack_ptr; |
|
|
300 | PL_markstack_max = c->markstack_max; |
|
|
301 | PL_scopestack = c->scopestack; |
|
|
302 | PL_scopestack_ix = c->scopestack_ix; |
|
|
303 | PL_scopestack_max = c->scopestack_max; |
|
|
304 | PL_savestack = c->savestack; |
|
|
305 | PL_savestack_ix = c->savestack_ix; |
|
|
306 | PL_savestack_max = c->savestack_max; |
|
|
307 | PL_retstack = c->retstack; |
|
|
308 | PL_retstack_ix = c->retstack_ix; |
|
|
309 | PL_retstack_max = c->retstack_max; |
|
|
310 | PL_curcop = c->curcop; |
|
|
311 | PL_top_env = c->top_env; |
|
|
312 | |
293 | |
313 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
294 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
314 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
295 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
315 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
296 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
316 | |
297 | |
… | |
… | |
319 | CV *cv; |
300 | CV *cv; |
320 | |
301 | |
321 | /* now do the ugly restore mess */ |
302 | /* now do the ugly restore mess */ |
322 | while ((cv = (CV *)POPs)) |
303 | while ((cv = (CV *)POPs)) |
323 | { |
304 | { |
324 | AV *padlist = (AV *)POPs; |
|
|
325 | |
|
|
326 | if (padlist) |
|
|
327 | { |
|
|
328 | put_padlist (cv); /* mark this padlist as available */ |
305 | put_padlist (cv); /* mark this padlist as available */ |
329 | CvPADLIST(cv) = padlist; |
306 | CvDEPTH (cv) = PTR2IV (POPs); |
330 | #ifdef USE_THREADS |
307 | CvPADLIST (cv) = (AV *)POPs; |
331 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
|
|
332 | #endif |
|
|
333 | } |
|
|
334 | |
|
|
335 | ++CvDEPTH(cv); |
|
|
336 | } |
308 | } |
337 | |
309 | |
338 | PUTBACK; |
310 | PUTBACK; |
339 | } |
311 | } |
340 | } |
312 | } |
341 | |
313 | |
342 | static void |
314 | static void |
343 | save_state(pTHX_ Coro__State c, int flags) |
315 | save_state(Coro__State c, int flags) |
344 | { |
316 | { |
345 | { |
317 | { |
346 | dSP; |
318 | dSP; |
347 | I32 cxix = cxstack_ix; |
319 | I32 cxix = cxstack_ix; |
348 | PERL_CONTEXT *ccstk = cxstack; |
320 | PERL_CONTEXT *ccstk = cxstack; |
… | |
… | |
362 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
334 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
363 | |
335 | |
364 | if (CxTYPE(cx) == CXt_SUB) |
336 | if (CxTYPE(cx) == CXt_SUB) |
365 | { |
337 | { |
366 | CV *cv = cx->blk_sub.cv; |
338 | CV *cv = cx->blk_sub.cv; |
|
|
339 | |
367 | if (CvDEPTH(cv)) |
340 | if (CvDEPTH (cv)) |
368 | { |
341 | { |
369 | #ifdef USE_THREADS |
|
|
370 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
|
|
371 | /*CvOWNER(cv) = 0;*/ |
|
|
372 | /*error must unlock this cv etc.. etc...*/ |
|
|
373 | #endif |
|
|
374 | EXTEND (SP, CvDEPTH(cv)*2); |
342 | EXTEND (SP, 3); |
375 | |
|
|
376 | while (--CvDEPTH(cv)) |
|
|
377 | { |
|
|
378 | /* this tells the restore code to increment CvDEPTH */ |
|
|
379 | PUSHs (Nullsv); |
|
|
380 | PUSHs ((SV *)cv); |
|
|
381 | } |
|
|
382 | |
343 | |
383 | PUSHs ((SV *)CvPADLIST(cv)); |
344 | PUSHs ((SV *)CvPADLIST(cv)); |
|
|
345 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
384 | PUSHs ((SV *)cv); |
346 | PUSHs ((SV *)cv); |
385 | |
347 | |
|
|
348 | CvDEPTH (cv) = 0; |
386 | get_padlist (cv); /* this is a monster */ |
349 | get_padlist (cv); |
387 | } |
350 | } |
388 | } |
351 | } |
|
|
352 | #ifdef CXt_FORMAT |
389 | else if (CxTYPE(cx) == CXt_FORMAT) |
353 | else if (CxTYPE(cx) == CXt_FORMAT) |
390 | { |
354 | { |
391 | /* I never used formats, so how should I know how these are implemented? */ |
355 | /* I never used formats, so how should I know how these are implemented? */ |
392 | /* my bold guess is as a simple, plain sub... */ |
356 | /* my bold guess is as a simple, plain sub... */ |
393 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
357 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
394 | } |
358 | } |
|
|
359 | #endif |
395 | } |
360 | } |
396 | |
361 | |
397 | if (top_si->si_type == PERLSI_MAIN) |
362 | if (top_si->si_type == PERLSI_MAIN) |
398 | break; |
363 | break; |
399 | |
364 | |
… | |
… | |
407 | |
372 | |
408 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
373 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
409 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
374 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
410 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
375 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
411 | |
376 | |
412 | c->dowarn = PL_dowarn; |
377 | #define VAR(name,type)c->name = PL_ ## name; |
413 | c->in_eval = PL_in_eval; |
378 | # include "state.h" |
414 | |
379 | #undef VAR |
415 | c->curstackinfo = PL_curstackinfo; |
|
|
416 | c->curstack = PL_curstack; |
|
|
417 | c->mainstack = PL_mainstack; |
|
|
418 | c->stack_sp = PL_stack_sp; |
|
|
419 | c->op = PL_op; |
|
|
420 | c->curpad = PL_curpad; |
|
|
421 | c->stack_base = PL_stack_base; |
|
|
422 | c->stack_max = PL_stack_max; |
|
|
423 | c->tmps_stack = PL_tmps_stack; |
|
|
424 | c->tmps_floor = PL_tmps_floor; |
|
|
425 | c->tmps_ix = PL_tmps_ix; |
|
|
426 | c->tmps_max = PL_tmps_max; |
|
|
427 | c->markstack = PL_markstack; |
|
|
428 | c->markstack_ptr = PL_markstack_ptr; |
|
|
429 | c->markstack_max = PL_markstack_max; |
|
|
430 | c->scopestack = PL_scopestack; |
|
|
431 | c->scopestack_ix = PL_scopestack_ix; |
|
|
432 | c->scopestack_max = PL_scopestack_max; |
|
|
433 | c->savestack = PL_savestack; |
|
|
434 | c->savestack_ix = PL_savestack_ix; |
|
|
435 | c->savestack_max = PL_savestack_max; |
|
|
436 | c->retstack = PL_retstack; |
|
|
437 | c->retstack_ix = PL_retstack_ix; |
|
|
438 | c->retstack_max = PL_retstack_max; |
|
|
439 | c->curcop = PL_curcop; |
|
|
440 | c->top_env = PL_top_env; |
|
|
441 | } |
380 | } |
442 | |
381 | |
443 | /* |
382 | /* |
444 | * allocate various perl stacks. This is an exact copy |
383 | * allocate various perl stacks. This is an exact copy |
445 | * of perl.c:init_stacks, except that it uses less memory |
384 | * of perl.c:init_stacks, except that it uses less memory |
446 | * on the assumption that coroutines do not usually need |
385 | * on the (sometimes correct) assumption that coroutines do |
447 | * a lot of stackspace. |
386 | * not usually need a lot of stackspace. |
448 | */ |
387 | */ |
449 | STATIC void |
388 | static void |
450 | coro_init_stacks (pTHX) |
389 | coro_init_stacks () |
451 | { |
390 | { |
452 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
391 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
453 | PL_curstackinfo->si_type = PERLSI_MAIN; |
392 | PL_curstackinfo->si_type = PERLSI_MAIN; |
454 | PL_curstack = PL_curstackinfo->si_stack; |
393 | PL_curstack = PL_curstackinfo->si_stack; |
455 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
394 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
… | |
… | |
465 | |
404 | |
466 | New(54,PL_markstack,16,I32); |
405 | New(54,PL_markstack,16,I32); |
467 | PL_markstack_ptr = PL_markstack; |
406 | PL_markstack_ptr = PL_markstack; |
468 | PL_markstack_max = PL_markstack + 16; |
407 | PL_markstack_max = PL_markstack + 16; |
469 | |
408 | |
|
|
409 | #ifdef SET_MARK_OFFSET |
470 | SET_MARK_OFFSET; |
410 | SET_MARK_OFFSET; |
|
|
411 | #endif |
471 | |
412 | |
472 | New(54,PL_scopestack,16,I32); |
413 | New(54,PL_scopestack,16,I32); |
473 | PL_scopestack_ix = 0; |
414 | PL_scopestack_ix = 0; |
474 | PL_scopestack_max = 16; |
415 | PL_scopestack_max = 16; |
475 | |
416 | |
476 | New(54,PL_savestack,96,ANY); |
417 | New(54,PL_savestack,96,ANY); |
477 | PL_savestack_ix = 0; |
418 | PL_savestack_ix = 0; |
478 | PL_savestack_max = 96; |
419 | PL_savestack_max = 96; |
479 | |
420 | |
|
|
421 | #if !PERL_VERSION_ATLEAST (5,9,0) |
480 | New(54,PL_retstack,8,OP*); |
422 | New(54,PL_retstack,8,OP*); |
481 | PL_retstack_ix = 0; |
423 | PL_retstack_ix = 0; |
482 | PL_retstack_max = 8; |
424 | PL_retstack_max = 8; |
|
|
425 | #endif |
483 | } |
426 | } |
484 | |
427 | |
485 | /* |
428 | /* |
486 | * destroy the stacks, the callchain etc... |
429 | * destroy the stacks, the callchain etc... |
487 | * still there is a memleak of 128 bytes... |
|
|
488 | */ |
430 | */ |
489 | STATIC void |
431 | static void |
490 | destroy_stacks(pTHX) |
432 | coro_destroy_stacks () |
491 | { |
433 | { |
492 | int destruct = PL_main_cv != Nullcv; |
434 | if (!IN_DESTRUCT) |
493 | |
|
|
494 | if (destruct) |
|
|
495 | { |
435 | { |
496 | /* is this ugly, I ask? */ |
436 | /* is this ugly, I ask? */ |
497 | while (PL_scopestack_ix) |
437 | LEAVE_SCOPE (0); |
498 | LEAVE; |
|
|
499 | |
438 | |
500 | /* sure it is, but more important: is it correct?? :/ */ |
439 | /* sure it is, but more important: is it correct?? :/ */ |
501 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
|
|
502 | FREETMPS; |
440 | FREETMPS; |
|
|
441 | |
|
|
442 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
503 | } |
443 | } |
504 | |
444 | |
505 | while (PL_curstackinfo->si_next) |
445 | while (PL_curstackinfo->si_next) |
506 | PL_curstackinfo = PL_curstackinfo->si_next; |
446 | PL_curstackinfo = PL_curstackinfo->si_next; |
507 | |
447 | |
508 | while (PL_curstackinfo) |
448 | while (PL_curstackinfo) |
509 | { |
449 | { |
510 | PERL_SI *p = PL_curstackinfo->si_prev; |
450 | PERL_SI *p = PL_curstackinfo->si_prev; |
511 | |
451 | |
512 | { |
452 | { /*D*//*remove*/ |
513 | dSP; |
453 | dSP; |
514 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
454 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
515 | PUTBACK; /* possibly superfluous */ |
455 | PUTBACK; /* possibly superfluous */ |
516 | } |
456 | } |
517 | |
457 | |
518 | if (destruct) |
458 | if (!IN_DESTRUCT) |
519 | { |
459 | { |
520 | dounwind(-1); |
460 | dounwind (-1);/*D*//*remove*/ |
521 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
461 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
522 | } |
462 | } |
523 | |
463 | |
524 | Safefree(PL_curstackinfo->si_cxstack); |
464 | Safefree (PL_curstackinfo->si_cxstack); |
525 | Safefree(PL_curstackinfo); |
465 | Safefree (PL_curstackinfo); |
526 | PL_curstackinfo = p; |
466 | PL_curstackinfo = p; |
527 | } |
467 | } |
528 | |
468 | |
529 | Safefree(PL_tmps_stack); |
469 | Safefree (PL_tmps_stack); |
530 | Safefree(PL_markstack); |
470 | Safefree (PL_markstack); |
531 | Safefree(PL_scopestack); |
471 | Safefree (PL_scopestack); |
532 | Safefree(PL_savestack); |
472 | Safefree (PL_savestack); |
|
|
473 | #if !PERL_VERSION_ATLEAST (5,9,0) |
533 | Safefree(PL_retstack); |
474 | Safefree (PL_retstack); |
534 | } |
|
|
535 | |
|
|
536 | static void |
|
|
537 | allocate_stack (Coro__State ctx, int alloc) |
|
|
538 | { |
|
|
539 | coro_stack *stack; |
|
|
540 | |
|
|
541 | New (0, stack, 1, coro_stack); |
|
|
542 | |
|
|
543 | stack->refcnt = 1; |
|
|
544 | stack->usecnt = 1; |
|
|
545 | stack->gencnt = ctx->gencnt = 0; |
|
|
546 | if (alloc) |
|
|
547 | { |
|
|
548 | #ifdef HAVE_MMAP |
|
|
549 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
550 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0); |
|
|
551 | if (stack->sptr == (void *)-1) |
|
|
552 | #endif |
475 | #endif |
553 | { |
|
|
554 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
555 | stack->ssize = -4096 * sizeof (long); |
|
|
556 | New (0, stack->sptr, 4096, long); |
|
|
557 | } |
|
|
558 | } |
|
|
559 | else |
|
|
560 | stack->sptr = 0; |
|
|
561 | |
|
|
562 | ctx->stack = stack; |
|
|
563 | } |
476 | } |
564 | |
477 | |
565 | static void |
478 | static void |
566 | deallocate_stack (Coro__State ctx) |
479 | setup_coro (struct coro *coro) |
567 | { |
|
|
568 | coro_stack *stack = ctx->stack; |
|
|
569 | |
|
|
570 | ctx->stack = 0; |
|
|
571 | |
|
|
572 | if (stack) |
|
|
573 | { |
|
|
574 | if (!--stack->refcnt) |
|
|
575 | { |
|
|
576 | #ifdef HAVE_MMAP |
|
|
577 | if (stack->ssize > 0 && stack->sptr) |
|
|
578 | munmap (stack->sptr, stack->ssize); |
|
|
579 | else |
|
|
580 | #else |
|
|
581 | Safefree (stack->sptr); |
|
|
582 | #endif |
|
|
583 | Safefree (stack); |
|
|
584 | } |
|
|
585 | else if (ctx->gencnt == stack->gencnt) |
|
|
586 | --stack->usecnt; |
|
|
587 | } |
|
|
588 | } |
|
|
589 | |
|
|
590 | static void |
|
|
591 | setup_coro (void *arg) |
|
|
592 | { |
480 | { |
593 | /* |
481 | /* |
594 | * emulate part of the perl startup here. |
482 | * emulate part of the perl startup here. |
595 | */ |
483 | */ |
|
|
484 | |
|
|
485 | coro_init_stacks (); |
|
|
486 | |
|
|
487 | PL_curcop = 0; |
|
|
488 | PL_in_eval = 0; |
|
|
489 | PL_curpm = 0; |
|
|
490 | |
|
|
491 | { |
|
|
492 | dSP; |
|
|
493 | LOGOP myop; |
|
|
494 | |
|
|
495 | /* I have no idea why this is needed, but it is */ |
|
|
496 | PUSHMARK (SP); |
|
|
497 | |
|
|
498 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
499 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
500 | |
|
|
501 | Zero (&myop, 1, LOGOP); |
|
|
502 | myop.op_next = Nullop; |
|
|
503 | myop.op_flags = OPf_WANT_VOID; |
|
|
504 | |
|
|
505 | PL_op = (OP *)&myop; |
|
|
506 | |
|
|
507 | PUSHMARK (SP); |
|
|
508 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
|
|
509 | PUTBACK; |
|
|
510 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
511 | SPAGAIN; |
|
|
512 | |
|
|
513 | ENTER; /* necessary e.g. for dounwind */ |
|
|
514 | } |
|
|
515 | } |
|
|
516 | |
|
|
517 | static void |
|
|
518 | free_coro_mortal () |
|
|
519 | { |
|
|
520 | if (coro_mortal) |
|
|
521 | { |
|
|
522 | SvREFCNT_dec (coro_mortal); |
|
|
523 | coro_mortal = 0; |
|
|
524 | } |
|
|
525 | } |
|
|
526 | |
|
|
527 | static void NOINLINE |
|
|
528 | prepare_cctx (coro_cctx *cctx) |
|
|
529 | { |
596 | dSP; |
530 | dSP; |
597 | Coro__State ctx = (Coro__State)arg; |
531 | LOGOP myop; |
598 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
|
|
599 | |
532 | |
600 | coro_init_stacks (aTHX); |
533 | Zero (&myop, 1, LOGOP); |
601 | /*PL_curcop = 0;*/ |
534 | myop.op_next = PL_op; |
602 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
535 | myop.op_flags = OPf_WANT_VOID; |
603 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
604 | GvAV (PL_defgv) = ctx->args; |
|
|
605 | |
536 | |
|
|
537 | sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx)); |
|
|
538 | |
|
|
539 | PUSHMARK (SP); |
|
|
540 | XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
|
|
541 | PUTBACK; |
|
|
542 | PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); |
606 | SPAGAIN; |
543 | SPAGAIN; |
607 | |
|
|
608 | if (ctx->stack) |
|
|
609 | { |
|
|
610 | ctx->cursp = 0; |
|
|
611 | |
|
|
612 | PUSHMARK(SP); |
|
|
613 | PUTBACK; |
|
|
614 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
615 | |
|
|
616 | if (SvTRUE (ERRSV)) |
|
|
617 | croak (NULL); |
|
|
618 | else |
|
|
619 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
620 | } |
|
|
621 | else |
|
|
622 | { |
|
|
623 | UNOP myop; |
|
|
624 | |
|
|
625 | PL_op = (OP *)&myop; |
|
|
626 | |
|
|
627 | Zero(&myop, 1, UNOP); |
|
|
628 | myop.op_next = Nullop; |
|
|
629 | myop.op_flags = OPf_WANT_VOID; |
|
|
630 | |
|
|
631 | PUSHMARK(SP); |
|
|
632 | XPUSHs (sub_init); |
|
|
633 | /* |
|
|
634 | * the next line is slightly wrong, as PL_op->op_next |
|
|
635 | * is actually being executed so we skip the first op. |
|
|
636 | * that doesn't matter, though, since it is only |
|
|
637 | * pp_nextstate and we never return... |
|
|
638 | * ah yes, and I don't care anyways ;) |
|
|
639 | */ |
|
|
640 | PUTBACK; |
|
|
641 | PL_op = pp_entersub(); |
|
|
642 | SPAGAIN; |
|
|
643 | |
|
|
644 | ENTER; /* necessary e.g. for dounwind */ |
|
|
645 | } |
|
|
646 | } |
544 | } |
647 | |
545 | |
648 | static void |
546 | static void |
649 | continue_coro (void *arg) |
547 | coro_run (void *arg) |
650 | { |
548 | { |
|
|
549 | /* coro_run is the alternative epilogue of transfer() */ |
|
|
550 | UNLOCK; |
|
|
551 | |
651 | /* |
552 | /* |
652 | * this is a _very_ stripped down perl interpreter ;) |
553 | * this is a _very_ stripped down perl interpreter ;) |
653 | */ |
554 | */ |
654 | Coro__State ctx = (Coro__State)arg; |
|
|
655 | JMPENV coro_start_env; |
|
|
656 | |
|
|
657 | /* same as JMPENV_BOOTSTRAP */ |
|
|
658 | Zero(&coro_start_env, 1, JMPENV); |
|
|
659 | coro_start_env.je_ret = -1; |
|
|
660 | coro_start_env.je_mustcatch = TRUE; |
|
|
661 | PL_top_env = &coro_start_env; |
555 | PL_top_env = &PL_start_env; |
662 | |
556 | |
663 | ctx->cursp = 0; |
557 | /* inject call to cctx_init */ |
664 | PL_op = PL_op->op_next; |
558 | prepare_cctx ((coro_cctx *)arg); |
665 | CALLRUNOPS(aTHX); |
|
|
666 | |
559 | |
|
|
560 | /* somebody will hit me for both perl_run and PL_restartop */ |
|
|
561 | perl_run (PL_curinterp); |
|
|
562 | |
|
|
563 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
667 | abort (); |
564 | abort (); |
668 | } |
565 | } |
669 | |
566 | |
670 | STATIC void |
567 | static coro_cctx * |
|
|
568 | cctx_new () |
|
|
569 | { |
|
|
570 | coro_cctx *cctx; |
|
|
571 | |
|
|
572 | ++cctx_count; |
|
|
573 | |
|
|
574 | New (0, cctx, 1, coro_cctx); |
|
|
575 | |
|
|
576 | #if HAVE_MMAP |
|
|
577 | |
|
|
578 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
|
|
579 | /* mmap suppsedly does allocate-on-write for us */ |
|
|
580 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
581 | |
|
|
582 | if (cctx->sptr == (void *)-1) |
|
|
583 | { |
|
|
584 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
585 | _exit (EXIT_FAILURE); |
|
|
586 | } |
|
|
587 | |
|
|
588 | # if STACKGUARD |
|
|
589 | mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
590 | # endif |
|
|
591 | |
|
|
592 | #else |
|
|
593 | |
|
|
594 | cctx->ssize = STACKSIZE * (long)sizeof (long); |
|
|
595 | New (0, cctx->sptr, STACKSIZE, long); |
|
|
596 | |
|
|
597 | if (!cctx->sptr) |
|
|
598 | { |
|
|
599 | perror ("FATAL: unable to malloc stack for coroutine"); |
|
|
600 | _exit (EXIT_FAILURE); |
|
|
601 | } |
|
|
602 | |
|
|
603 | #endif |
|
|
604 | |
|
|
605 | #if USE_VALGRIND |
|
|
606 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ( |
|
|
607 | STACKGUARD * PAGESIZE + (char *)cctx->sptr, |
|
|
608 | cctx->ssize + (char *)cctx->sptr |
|
|
609 | ); |
|
|
610 | #endif |
|
|
611 | |
|
|
612 | coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize); |
|
|
613 | |
|
|
614 | return cctx; |
|
|
615 | } |
|
|
616 | |
|
|
617 | static void |
|
|
618 | cctx_free (coro_cctx *cctx) |
|
|
619 | { |
|
|
620 | if (!cctx) |
|
|
621 | return; |
|
|
622 | |
|
|
623 | --cctx_count; |
|
|
624 | |
|
|
625 | #if USE_VALGRIND |
|
|
626 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
627 | #endif |
|
|
628 | |
|
|
629 | #if HAVE_MMAP |
|
|
630 | munmap (cctx->sptr, cctx->ssize); |
|
|
631 | #else |
|
|
632 | Safefree (cctx->sptr); |
|
|
633 | #endif |
|
|
634 | |
|
|
635 | Safefree (cctx); |
|
|
636 | } |
|
|
637 | |
|
|
638 | static coro_cctx * |
|
|
639 | cctx_get () |
|
|
640 | { |
|
|
641 | coro_cctx *cctx; |
|
|
642 | |
|
|
643 | if (cctx_first) |
|
|
644 | { |
|
|
645 | --cctx_idle; |
|
|
646 | cctx = cctx_first; |
|
|
647 | cctx_first = cctx->next; |
|
|
648 | } |
|
|
649 | else |
|
|
650 | { |
|
|
651 | cctx = cctx_new (); |
|
|
652 | PL_op = PL_op->op_next; |
|
|
653 | } |
|
|
654 | |
|
|
655 | return cctx; |
|
|
656 | } |
|
|
657 | |
|
|
658 | static void |
|
|
659 | cctx_put (coro_cctx *cctx) |
|
|
660 | { |
|
|
661 | ++cctx_idle; |
|
|
662 | cctx->next = cctx_first; |
|
|
663 | cctx_first = cctx; |
|
|
664 | } |
|
|
665 | |
|
|
666 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
667 | static void NOINLINE |
671 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
668 | transfer (struct coro *prev, struct coro *next, int flags) |
672 | { |
669 | { |
673 | dSTACKLEVEL; |
670 | dSTACKLEVEL; |
674 | static struct coro *xnext; |
|
|
675 | |
671 | |
|
|
672 | /* sometimes transfer is only called to set idle_sp */ |
|
|
673 | if (flags == TRANSFER_SET_STACKLEVEL) |
|
|
674 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
676 | if (prev != next) |
675 | else if (prev != next) |
677 | { |
676 | { |
678 | xnext = next; |
677 | coro_cctx *prev__cctx; |
|
|
678 | |
|
|
679 | if (!prev->cctx) |
|
|
680 | { |
|
|
681 | /* create a new empty context */ |
|
|
682 | Newz (0, prev->cctx, 1, coro_cctx); |
|
|
683 | prev->cctx->inuse = 1; |
|
|
684 | prev->flags |= CF_RUNNING; |
|
|
685 | } |
|
|
686 | |
|
|
687 | if (!prev->flags & CF_RUNNING) |
|
|
688 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
|
|
689 | |
|
|
690 | if (next->flags & CF_RUNNING) |
|
|
691 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
|
|
692 | |
|
|
693 | prev->flags &= ~CF_RUNNING; |
|
|
694 | next->flags |= CF_RUNNING; |
|
|
695 | |
|
|
696 | LOCK; |
679 | |
697 | |
680 | if (next->mainstack) |
698 | if (next->mainstack) |
681 | { |
699 | { |
|
|
700 | /* coroutine already started */ |
682 | SAVE (prev, flags); |
701 | SAVE (prev, flags); |
683 | LOAD (next); |
702 | LOAD (next); |
684 | |
|
|
685 | /* mark this state as in-use */ |
|
|
686 | next->mainstack = 0; |
|
|
687 | next->tmps_ix = -2; |
|
|
688 | |
|
|
689 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
690 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
691 | { |
|
|
692 | if (!prev->stack) |
|
|
693 | allocate_stack (prev, 0); |
|
|
694 | else if (prev->cursp != stacklevel |
|
|
695 | && prev->stack->usecnt > 1) |
|
|
696 | { |
|
|
697 | prev->gencnt = ++prev->stack->gencnt; |
|
|
698 | prev->stack->usecnt = 1; |
|
|
699 | } |
|
|
700 | |
|
|
701 | /* has our stack been invalidated? */ |
|
|
702 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
703 | { |
|
|
704 | deallocate_stack (next); |
|
|
705 | allocate_stack (next, 1); |
|
|
706 | coro_create (&(next->stack->cctx), |
|
|
707 | continue_coro, (void *)next, |
|
|
708 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
709 | } |
|
|
710 | |
|
|
711 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
712 | /* don't add any code here */ |
|
|
713 | } |
|
|
714 | |
|
|
715 | } |
703 | } |
716 | else if (next->tmps_ix == -2) |
|
|
717 | croak ("tried to transfer to running coroutine"); |
|
|
718 | else |
704 | else |
719 | { |
705 | { |
|
|
706 | /* need to start coroutine */ |
720 | SAVE (prev, -1); /* first get rid of the old state */ |
707 | /* first get rid of the old state */ |
721 | |
708 | SAVE (prev, -1); |
722 | if (flags & TRANSFER_SAVE_CCTXT) |
709 | /* setup coroutine call */ |
723 | { |
|
|
724 | if (!prev->stack) |
|
|
725 | allocate_stack (prev, 0); |
|
|
726 | |
|
|
727 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
728 | { |
|
|
729 | setup_coro (next); |
|
|
730 | |
|
|
731 | prev->stack->refcnt++; |
|
|
732 | prev->stack->usecnt++; |
|
|
733 | next->stack = prev->stack; |
|
|
734 | next->gencnt = prev->gencnt; |
|
|
735 | } |
|
|
736 | else |
|
|
737 | { |
|
|
738 | allocate_stack (next, 1); |
|
|
739 | coro_create (&(next->stack->cctx), |
|
|
740 | setup_coro, (void *)next, |
|
|
741 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
742 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
743 | /* don't add any code here */ |
|
|
744 | } |
|
|
745 | } |
|
|
746 | else |
|
|
747 | setup_coro (next); |
710 | setup_coro (next); |
|
|
711 | /* need a new stack */ |
|
|
712 | assert (!next->stack); |
748 | } |
713 | } |
|
|
714 | |
|
|
715 | prev__cctx = prev->cctx; |
|
|
716 | |
|
|
717 | /* possibly "free" the cctx */ |
|
|
718 | if (prev__cctx->idle_sp == STACKLEVEL) |
|
|
719 | { |
|
|
720 | assert (PL_top_env == prev__cctx->top_env); |
|
|
721 | |
|
|
722 | cctx_put (prev__cctx); |
|
|
723 | prev->cctx = 0; |
|
|
724 | } |
|
|
725 | else if (prev__cctx->idle_sp) //D |
|
|
726 | fprintf (stderr, "coro %p has own stack %p-%p\n", prev__cctx, prev__cctx->idle_sp, STACKLEVEL);//D |
|
|
727 | |
|
|
728 | if (!next->cctx) |
|
|
729 | next->cctx = cctx_get (); |
|
|
730 | |
|
|
731 | if (prev__cctx != next->cctx) |
|
|
732 | { |
|
|
733 | assert ( prev__cctx->inuse); |
|
|
734 | assert (!next->cctx->inuse); |
|
|
735 | |
|
|
736 | prev__cctx->inuse = 0; |
|
|
737 | next->cctx->inuse = 1; |
|
|
738 | |
|
|
739 | prev__cctx->top_env = PL_top_env; |
|
|
740 | PL_top_env = next->cctx->top_env; |
|
|
741 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
|
|
742 | } |
|
|
743 | |
|
|
744 | free_coro_mortal (); |
|
|
745 | |
|
|
746 | UNLOCK; |
749 | } |
747 | } |
750 | |
|
|
751 | /* |
|
|
752 | * xnext is now either prev or next, depending on wether |
|
|
753 | * we switched the c stack or not. that's why i use a global |
|
|
754 | * variable, that should become thread-specific at one point. |
|
|
755 | */ |
|
|
756 | xnext->cursp = stacklevel; |
|
|
757 | } |
748 | } |
|
|
749 | |
|
|
750 | struct transfer_args |
|
|
751 | { |
|
|
752 | struct coro *prev, *next; |
|
|
753 | int flags; |
|
|
754 | }; |
|
|
755 | |
|
|
756 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
|
|
757 | |
|
|
758 | static void |
|
|
759 | coro_state_destroy (struct coro *coro) |
|
|
760 | { |
|
|
761 | if (coro->refcnt--) |
|
|
762 | return; |
|
|
763 | |
|
|
764 | if (coro->flags & CF_RUNNING) |
|
|
765 | croak ("FATAL: tried to destroy currently running coroutine"); |
|
|
766 | |
|
|
767 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
768 | { |
|
|
769 | struct coro temp; |
|
|
770 | |
|
|
771 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
|
|
772 | LOAD (coro); |
|
|
773 | |
|
|
774 | coro_destroy_stacks (); |
|
|
775 | |
|
|
776 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
777 | |
|
|
778 | coro->mainstack = 0; |
|
|
779 | } |
|
|
780 | |
|
|
781 | cctx_free (coro->cctx); |
|
|
782 | SvREFCNT_dec (coro->args); |
|
|
783 | Safefree (coro); |
|
|
784 | } |
|
|
785 | |
|
|
786 | static int |
|
|
787 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
|
|
788 | { |
|
|
789 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
790 | mg->mg_ptr = 0; |
|
|
791 | |
|
|
792 | coro_state_destroy (coro); |
|
|
793 | |
|
|
794 | return 0; |
|
|
795 | } |
|
|
796 | |
|
|
797 | static int |
|
|
798 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
799 | { |
|
|
800 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
801 | |
|
|
802 | ++coro->refcnt; |
|
|
803 | |
|
|
804 | return 0; |
|
|
805 | } |
|
|
806 | |
|
|
807 | static MGVTBL coro_state_vtbl = { |
|
|
808 | 0, 0, 0, 0, |
|
|
809 | coro_state_clear, |
|
|
810 | 0, |
|
|
811 | #ifdef MGf_DUP |
|
|
812 | coro_state_dup, |
|
|
813 | #else |
|
|
814 | # define MGf_DUP 0 |
|
|
815 | #endif |
|
|
816 | }; |
758 | |
817 | |
759 | static struct coro * |
818 | static struct coro * |
760 | sv_to_coro (SV *arg, const char *funcname, const char *varname) |
819 | SvSTATE (SV *coro) |
761 | { |
820 | { |
762 | if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV) |
821 | HV *stash; |
|
|
822 | MAGIC *mg; |
|
|
823 | |
|
|
824 | if (SvROK (coro)) |
|
|
825 | coro = SvRV (coro); |
|
|
826 | |
|
|
827 | stash = SvSTASH (coro); |
|
|
828 | if (stash != coro_stash && stash != coro_state_stash) |
763 | { |
829 | { |
764 | HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash); |
830 | /* very slow, but rare, check */ |
765 | |
831 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
766 | if (!he) |
832 | croak ("Coro::State object required"); |
767 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname); |
|
|
768 | |
|
|
769 | arg = HeVAL(he); |
|
|
770 | } |
833 | } |
771 | |
|
|
772 | /* must also be changed inside Coro::Cont::yield */ |
|
|
773 | if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash) |
|
|
774 | return (struct coro *) SvIV((SV*)SvRV(arg)); |
|
|
775 | |
834 | |
776 | croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); |
835 | mg = SvMAGIC (coro); |
777 | /*NORETURN*/ |
836 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
837 | return (struct coro *)mg->mg_ptr; |
778 | } |
838 | } |
779 | |
839 | |
780 | static void |
840 | static void |
|
|
841 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
|
|
842 | { |
|
|
843 | ta->prev = SvSTATE (prev); |
|
|
844 | ta->next = SvSTATE (next); |
|
|
845 | ta->flags = flags; |
|
|
846 | } |
|
|
847 | |
|
|
848 | static void |
781 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
849 | api_transfer (SV *prev, SV *next, int flags) |
782 | { |
850 | { |
783 | transfer(aTHX_ |
851 | dTHX; |
784 | sv_to_coro (prev, "Coro::transfer", "prev"), |
852 | struct transfer_args ta; |
785 | sv_to_coro (next, "Coro::transfer", "next"), |
853 | |
786 | flags); |
854 | prepare_transfer (&ta, prev, next, flags); |
|
|
855 | TRANSFER (ta); |
787 | } |
856 | } |
788 | |
857 | |
789 | /** Coro ********************************************************************/ |
858 | /** Coro ********************************************************************/ |
790 | |
859 | |
791 | #define PRIO_MAX 3 |
860 | #define PRIO_MAX 3 |
… | |
… | |
795 | #define PRIO_IDLE -3 |
864 | #define PRIO_IDLE -3 |
796 | #define PRIO_MIN -4 |
865 | #define PRIO_MIN -4 |
797 | |
866 | |
798 | /* for Coro.pm */ |
867 | /* for Coro.pm */ |
799 | static GV *coro_current, *coro_idle; |
868 | static GV *coro_current, *coro_idle; |
800 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
869 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
801 | static int coro_nready; |
870 | static int coro_nready; |
802 | |
871 | |
803 | static void |
872 | static void |
804 | coro_enq (SV *sv) |
873 | coro_enq (SV *coro_sv) |
805 | { |
874 | { |
806 | if (SvROK (sv)) |
875 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
807 | { |
|
|
808 | SV *hv = SvRV (sv); |
|
|
809 | if (SvTYPE (hv) == SVt_PVHV) |
|
|
810 | { |
|
|
811 | SV **xprio = hv_fetch ((HV *)hv, "prio", 4, 0); |
|
|
812 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
813 | |
|
|
814 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
815 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
816 | : prio; |
|
|
817 | |
|
|
818 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
819 | coro_nready++; |
876 | coro_nready++; |
820 | |
|
|
821 | return; |
|
|
822 | } |
|
|
823 | } |
|
|
824 | |
|
|
825 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
826 | } |
877 | } |
827 | |
878 | |
828 | static SV * |
879 | static SV * |
829 | coro_deq (int min_prio) |
880 | coro_deq (int min_prio) |
830 | { |
881 | { |
… | |
… | |
833 | min_prio -= PRIO_MIN; |
884 | min_prio -= PRIO_MIN; |
834 | if (min_prio < 0) |
885 | if (min_prio < 0) |
835 | min_prio = 0; |
886 | min_prio = 0; |
836 | |
887 | |
837 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
888 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
838 | if (av_len (coro_ready[prio]) >= 0) |
889 | if (AvFILLp (coro_ready [prio]) >= 0) |
839 | { |
890 | { |
840 | coro_nready--; |
891 | coro_nready--; |
841 | return av_shift (coro_ready[prio]); |
892 | return av_shift (coro_ready [prio]); |
842 | } |
893 | } |
843 | |
894 | |
844 | return 0; |
895 | return 0; |
845 | } |
896 | } |
846 | |
897 | |
847 | static void |
898 | static int |
848 | api_ready (SV *coro) |
899 | api_ready (SV *coro_sv) |
849 | { |
900 | { |
|
|
901 | struct coro *coro; |
|
|
902 | |
|
|
903 | if (SvROK (coro_sv)) |
|
|
904 | coro_sv = SvRV (coro_sv); |
|
|
905 | |
|
|
906 | coro = SvSTATE (coro_sv); |
|
|
907 | |
|
|
908 | if (coro->flags & CF_READY) |
|
|
909 | return 0; |
|
|
910 | |
|
|
911 | if (coro->flags & CF_RUNNING) |
|
|
912 | croak ("Coro::ready called on currently running coroutine"); |
|
|
913 | |
|
|
914 | coro->flags |= CF_READY; |
|
|
915 | |
|
|
916 | LOCK; |
850 | coro_enq (SvREFCNT_inc (coro)); |
917 | coro_enq (SvREFCNT_inc (coro_sv)); |
851 | } |
918 | UNLOCK; |
852 | |
919 | |
|
|
920 | return 1; |
|
|
921 | } |
|
|
922 | |
853 | static void |
923 | static int |
854 | api_schedule (int cede) |
924 | api_is_ready (SV *coro_sv) |
855 | { |
925 | { |
|
|
926 | return !!SvSTATE (coro_sv)->flags & CF_READY; |
|
|
927 | } |
|
|
928 | |
|
|
929 | static void |
|
|
930 | prepare_schedule (struct transfer_args *ta) |
|
|
931 | { |
856 | SV *prev, *next; |
932 | SV *current, *prev, *next; |
857 | |
933 | |
858 | prev = GvSV (coro_current); |
934 | current = GvSV (coro_current); |
859 | |
935 | |
860 | if (cede) |
936 | for (;;) |
861 | coro_enq (SvREFCNT_inc (prev)); |
937 | { |
862 | |
938 | LOCK; |
863 | next = coro_deq (PRIO_MIN); |
939 | next = coro_deq (PRIO_MIN); |
|
|
940 | UNLOCK; |
864 | |
941 | |
865 | if (!next) |
942 | if (next) |
866 | next = SvREFCNT_inc (GvSV (coro_idle)); |
943 | break; |
867 | |
944 | |
868 | GvSV (coro_current) = SvREFCNT_inc (next); |
945 | { |
869 | transfer (aTHX_ |
946 | dSP; |
870 | sv_to_coro (prev, "Coro::schedule", "current coroutine"), |
947 | |
871 | sv_to_coro (next, "Coro::schedule", "next coroutine"), |
948 | ENTER; |
872 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
949 | SAVETMPS; |
873 | SvREFCNT_dec (next); |
950 | |
874 | SvREFCNT_dec (prev); |
951 | PUSHMARK (SP); |
|
|
952 | PUTBACK; |
|
|
953 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
954 | |
|
|
955 | FREETMPS; |
|
|
956 | LEAVE; |
|
|
957 | } |
|
|
958 | } |
|
|
959 | |
|
|
960 | prev = SvRV (current); |
|
|
961 | SvRV (current) = next; |
|
|
962 | |
|
|
963 | /* free this only after the transfer */ |
|
|
964 | LOCK; |
|
|
965 | free_coro_mortal (); |
|
|
966 | UNLOCK; |
|
|
967 | coro_mortal = prev; |
|
|
968 | |
|
|
969 | ta->prev = SvSTATE (prev); |
|
|
970 | ta->next = SvSTATE (next); |
|
|
971 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
972 | |
|
|
973 | ta->next->flags &= ~CF_READY; |
|
|
974 | } |
|
|
975 | |
|
|
976 | static void |
|
|
977 | prepare_cede (struct transfer_args *ta) |
|
|
978 | { |
|
|
979 | api_ready (GvSV (coro_current)); |
|
|
980 | |
|
|
981 | prepare_schedule (ta); |
|
|
982 | } |
|
|
983 | |
|
|
984 | static void |
|
|
985 | api_schedule (void) |
|
|
986 | { |
|
|
987 | dTHX; |
|
|
988 | struct transfer_args ta; |
|
|
989 | |
|
|
990 | prepare_schedule (&ta); |
|
|
991 | TRANSFER (ta); |
|
|
992 | } |
|
|
993 | |
|
|
994 | static void |
|
|
995 | api_cede (void) |
|
|
996 | { |
|
|
997 | dTHX; |
|
|
998 | struct transfer_args ta; |
|
|
999 | |
|
|
1000 | prepare_cede (&ta); |
|
|
1001 | TRANSFER (ta); |
875 | } |
1002 | } |
876 | |
1003 | |
877 | MODULE = Coro::State PACKAGE = Coro::State |
1004 | MODULE = Coro::State PACKAGE = Coro::State |
878 | |
1005 | |
879 | PROTOTYPES: ENABLE |
1006 | PROTOTYPES: DISABLE |
880 | |
1007 | |
881 | BOOT: |
1008 | BOOT: |
882 | { /* {} necessary for stoopid perl-5.6.x */ |
1009 | { |
883 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
1010 | #ifdef USE_ITHREADS |
884 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
1011 | MUTEX_INIT (&coro_mutex); |
|
|
1012 | #endif |
|
|
1013 | BOOT_PAGESIZE; |
|
|
1014 | |
885 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1015 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
886 | |
1016 | |
887 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1017 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
888 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1018 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
889 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1019 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
890 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
|
|
891 | |
|
|
892 | if (!padlist_cache) |
|
|
893 | padlist_cache = newHV (); |
|
|
894 | |
1020 | |
895 | main_mainstack = PL_mainstack; |
1021 | main_mainstack = PL_mainstack; |
896 | |
1022 | |
897 | coroapi.ver = CORO_API_VERSION; |
1023 | coroapi.ver = CORO_API_VERSION; |
898 | coroapi.transfer = api_transfer; |
1024 | coroapi.transfer = api_transfer; |
899 | } |
|
|
900 | |
1025 | |
901 | Coro::State |
1026 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
902 | _newprocess(args) |
1027 | } |
903 | SV * args |
1028 | |
904 | PROTOTYPE: $ |
1029 | SV * |
|
|
1030 | new (char *klass, ...) |
905 | CODE: |
1031 | CODE: |
906 | Coro__State coro; |
1032 | { |
|
|
1033 | struct coro *coro; |
|
|
1034 | HV *hv; |
|
|
1035 | int i; |
907 | |
1036 | |
908 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
|
|
909 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
910 | |
|
|
911 | New (0, coro, 1, struct coro); |
1037 | Newz (0, coro, 1, struct coro); |
|
|
1038 | coro->args = newAV (); |
912 | |
1039 | |
913 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
1040 | hv = newHV (); |
914 | coro->mainstack = 0; /* actual work is done inside transfer */ |
1041 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
915 | coro->stack = 0; |
1042 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
916 | |
1043 | |
917 | RETVAL = coro; |
1044 | for (i = 1; i < items; i++) |
|
|
1045 | av_push (coro->args, newSVsv (ST (i))); |
|
|
1046 | } |
918 | OUTPUT: |
1047 | OUTPUT: |
919 | RETVAL |
1048 | RETVAL |
920 | |
1049 | |
921 | void |
1050 | void |
922 | transfer(prev, next, flags) |
1051 | _set_stacklevel (...) |
923 | Coro::State_or_hashref prev |
1052 | ALIAS: |
924 | Coro::State_or_hashref next |
1053 | Coro::State::transfer = 1 |
925 | int flags |
1054 | Coro::schedule = 2 |
926 | PROTOTYPE: @ |
1055 | Coro::cede = 3 |
|
|
1056 | Coro::Cont::yield = 4 |
927 | CODE: |
1057 | CODE: |
928 | PUTBACK; |
1058 | { |
929 | transfer (aTHX_ prev, next, flags); |
1059 | struct transfer_args ta; |
930 | SPAGAIN; |
1060 | |
|
|
1061 | switch (ix) |
|
|
1062 | { |
|
|
1063 | case 0: |
|
|
1064 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
|
|
1065 | ta.next = 0; |
|
|
1066 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1067 | break; |
|
|
1068 | |
|
|
1069 | case 1: |
|
|
1070 | if (items != 3) |
|
|
1071 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
|
|
1072 | |
|
|
1073 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1074 | break; |
|
|
1075 | |
|
|
1076 | case 2: |
|
|
1077 | prepare_schedule (&ta); |
|
|
1078 | break; |
|
|
1079 | |
|
|
1080 | case 3: |
|
|
1081 | prepare_cede (&ta); |
|
|
1082 | break; |
|
|
1083 | |
|
|
1084 | case 4: |
|
|
1085 | { |
|
|
1086 | SV *yieldstack; |
|
|
1087 | SV *sv; |
|
|
1088 | AV *defav = GvAV (PL_defgv); |
|
|
1089 | |
|
|
1090 | yieldstack = *hv_fetch ( |
|
|
1091 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1092 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1093 | 0 |
|
|
1094 | ); |
|
|
1095 | |
|
|
1096 | /* set up @_ -- ugly */ |
|
|
1097 | av_clear (defav); |
|
|
1098 | av_fill (defav, items - 1); |
|
|
1099 | while (items--) |
|
|
1100 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1101 | |
|
|
1102 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1103 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1104 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1105 | ta.flags = 0; |
|
|
1106 | SvREFCNT_dec (sv); |
|
|
1107 | } |
|
|
1108 | break; |
|
|
1109 | |
|
|
1110 | } |
|
|
1111 | |
|
|
1112 | TRANSFER (ta); |
|
|
1113 | } |
931 | |
1114 | |
932 | void |
1115 | void |
933 | DESTROY(coro) |
1116 | _clone_state_from (SV *dst, SV *src) |
934 | Coro::State coro |
1117 | CODE: |
935 | CODE: |
1118 | { |
|
|
1119 | struct coro *coro_src = SvSTATE (src); |
936 | |
1120 | |
937 | if (coro->mainstack && coro->mainstack != main_mainstack) |
1121 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
938 | { |
|
|
939 | struct coro temp; |
|
|
940 | |
1122 | |
941 | PUTBACK; |
1123 | ++coro_src->refcnt; |
942 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
1124 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
943 | LOAD(aTHX_ coro); |
1125 | } |
944 | SPAGAIN; |
|
|
945 | |
|
|
946 | destroy_stacks (aTHX); |
|
|
947 | |
|
|
948 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
|
|
949 | SPAGAIN; |
|
|
950 | |
|
|
951 | coro->mainstack = 0; |
|
|
952 | } |
|
|
953 | |
|
|
954 | deallocate_stack (coro); |
|
|
955 | |
|
|
956 | Safefree (coro); |
|
|
957 | |
1126 | |
958 | void |
1127 | void |
959 | flush() |
|
|
960 | CODE: |
|
|
961 | #ifdef MAY_FLUSH |
|
|
962 | flush_padlist_cache (); |
|
|
963 | #endif |
|
|
964 | |
|
|
965 | void |
|
|
966 | _exit(code) |
1128 | _exit (code) |
967 | int code |
1129 | int code |
968 | PROTOTYPE: $ |
1130 | PROTOTYPE: $ |
969 | CODE: |
1131 | CODE: |
970 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
|
|
971 | _exit (code); |
1132 | _exit (code); |
972 | #else |
|
|
973 | signal (SIGTERM, SIG_DFL); |
|
|
974 | raise (SIGTERM); |
|
|
975 | exit (code); |
|
|
976 | #endif |
|
|
977 | |
1133 | |
978 | MODULE = Coro::State PACKAGE = Coro::Cont |
1134 | int |
|
|
1135 | cctx_count () |
|
|
1136 | CODE: |
|
|
1137 | RETVAL = cctx_count; |
|
|
1138 | OUTPUT: |
|
|
1139 | RETVAL |
979 | |
1140 | |
980 | # this is slightly dirty (should expose a c-level api) |
1141 | int |
981 | |
1142 | cctx_idle () |
982 | void |
1143 | CODE: |
983 | yield(...) |
1144 | RETVAL = cctx_idle; |
984 | PROTOTYPE: @ |
1145 | OUTPUT: |
985 | CODE: |
1146 | RETVAL |
986 | static SV *returnstk; |
|
|
987 | SV *sv; |
|
|
988 | AV *defav = GvAV (PL_defgv); |
|
|
989 | struct coro *prev, *next; |
|
|
990 | |
|
|
991 | if (!returnstk) |
|
|
992 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
|
|
993 | |
|
|
994 | /* set up @_ -- ugly */ |
|
|
995 | av_clear (defav); |
|
|
996 | av_fill (defav, items - 1); |
|
|
997 | while (items--) |
|
|
998 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
999 | |
|
|
1000 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
1001 | sv = av_pop ((AV *)SvRV (returnstk)); |
|
|
1002 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
1003 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
1004 | SvREFCNT_dec (sv); |
|
|
1005 | |
|
|
1006 | transfer(aTHX_ prev, next, 0); |
|
|
1007 | |
1147 | |
1008 | MODULE = Coro::State PACKAGE = Coro |
1148 | MODULE = Coro::State PACKAGE = Coro |
1009 | |
1149 | |
1010 | # this is slightly dirty (should expose a c-level api) |
|
|
1011 | |
|
|
1012 | BOOT: |
1150 | BOOT: |
1013 | { |
1151 | { |
1014 | int i; |
1152 | int i; |
|
|
1153 | |
1015 | HV *stash = gv_stashpv ("Coro", TRUE); |
1154 | coro_stash = gv_stashpv ("Coro", TRUE); |
1016 | |
1155 | |
1017 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1156 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1018 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1157 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1019 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1158 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1020 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1159 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1021 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1160 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1022 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1161 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1023 | |
1162 | |
1024 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1163 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1025 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1164 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1026 | |
1165 | |
1027 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1166 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
… | |
… | |
1029 | |
1168 | |
1030 | { |
1169 | { |
1031 | SV *sv = perl_get_sv("Coro::API", 1); |
1170 | SV *sv = perl_get_sv("Coro::API", 1); |
1032 | |
1171 | |
1033 | coroapi.schedule = api_schedule; |
1172 | coroapi.schedule = api_schedule; |
|
|
1173 | coroapi.cede = api_cede; |
1034 | coroapi.ready = api_ready; |
1174 | coroapi.ready = api_ready; |
|
|
1175 | coroapi.is_ready = api_is_ready; |
1035 | coroapi.nready = &coro_nready; |
1176 | coroapi.nready = &coro_nready; |
1036 | coroapi.current = coro_current; |
1177 | coroapi.current = coro_current; |
1037 | |
1178 | |
1038 | GCoroAPI = &coroapi; |
1179 | GCoroAPI = &coroapi; |
1039 | sv_setiv(sv, (IV)&coroapi); |
1180 | sv_setiv (sv, (IV)&coroapi); |
1040 | SvREADONLY_on(sv); |
1181 | SvREADONLY_on (sv); |
1041 | } |
1182 | } |
1042 | } |
1183 | } |
1043 | |
1184 | |
1044 | void |
1185 | int |
|
|
1186 | prio (Coro::State coro, int newprio = 0) |
|
|
1187 | ALIAS: |
|
|
1188 | nice = 1 |
|
|
1189 | CODE: |
|
|
1190 | { |
|
|
1191 | RETVAL = coro->prio; |
|
|
1192 | |
|
|
1193 | if (items > 1) |
|
|
1194 | { |
|
|
1195 | if (ix) |
|
|
1196 | newprio += coro->prio; |
|
|
1197 | |
|
|
1198 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
1199 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
1200 | |
|
|
1201 | coro->prio = newprio; |
|
|
1202 | } |
|
|
1203 | } |
|
|
1204 | |
|
|
1205 | SV * |
1045 | ready(self) |
1206 | ready (SV *self) |
1046 | SV * self |
1207 | PROTOTYPE: $ |
1047 | CODE: |
1208 | CODE: |
1048 | api_ready (self); |
1209 | RETVAL = boolSV (api_ready (self)); |
|
|
1210 | OUTPUT: |
|
|
1211 | RETVAL |
|
|
1212 | |
|
|
1213 | SV * |
|
|
1214 | is_ready (SV *self) |
|
|
1215 | PROTOTYPE: $ |
|
|
1216 | CODE: |
|
|
1217 | RETVAL = boolSV (api_is_ready (self)); |
|
|
1218 | OUTPUT: |
|
|
1219 | RETVAL |
1049 | |
1220 | |
1050 | int |
1221 | int |
1051 | nready(...) |
1222 | nready (...) |
1052 | PROTOTYPE: |
1223 | PROTOTYPE: |
1053 | CODE: |
1224 | CODE: |
1054 | RETVAL = coro_nready; |
1225 | RETVAL = coro_nready; |
1055 | OUTPUT: |
1226 | OUTPUT: |
1056 | RETVAL |
1227 | RETVAL |
1057 | |
1228 | |
|
|
1229 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
1230 | |
|
|
1231 | SV * |
|
|
1232 | _get_state () |
|
|
1233 | CODE: |
|
|
1234 | { |
|
|
1235 | struct { |
|
|
1236 | int errorno; |
|
|
1237 | int laststype; |
|
|
1238 | int laststatval; |
|
|
1239 | Stat_t statcache; |
|
|
1240 | } data; |
|
|
1241 | |
|
|
1242 | data.errorno = errno; |
|
|
1243 | data.laststype = PL_laststype; |
|
|
1244 | data.laststatval = PL_laststatval; |
|
|
1245 | data.statcache = PL_statcache; |
|
|
1246 | |
|
|
1247 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1248 | } |
|
|
1249 | OUTPUT: |
|
|
1250 | RETVAL |
|
|
1251 | |
1058 | void |
1252 | void |
1059 | schedule(...) |
1253 | _set_state (char *data_) |
1060 | PROTOTYPE: |
1254 | PROTOTYPE: $ |
1061 | ALIAS: |
|
|
1062 | cede = 1 |
|
|
1063 | CODE: |
1255 | CODE: |
1064 | api_schedule (ix); |
1256 | { |
|
|
1257 | struct { |
|
|
1258 | int errorno; |
|
|
1259 | int laststype; |
|
|
1260 | int laststatval; |
|
|
1261 | Stat_t statcache; |
|
|
1262 | } *data = (void *)data_; |
1065 | |
1263 | |
|
|
1264 | errno = data->errorno; |
|
|
1265 | PL_laststype = data->laststype; |
|
|
1266 | PL_laststatval = data->laststatval; |
|
|
1267 | PL_statcache = data->statcache; |
|
|
1268 | } |