1 |
root |
1.63 |
#include "libcoro/coro.c" |
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root |
1.146 |
#define PERL_NO_GET_CONTEXT |
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5 |
root |
1.1 |
#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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pcg |
1.46 |
#include "patchlevel.h" |
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root |
1.127 |
#include <stdio.h> |
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#include <errno.h> |
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#include <assert.h> |
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#ifdef HAVE_MMAP |
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# include <unistd.h> |
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# include <sys/mman.h> |
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# ifndef MAP_ANONYMOUS |
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# ifdef MAP_ANON |
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# define MAP_ANONYMOUS MAP_ANON |
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# else |
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# undef HAVE_MMAP |
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# endif |
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# endif |
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# include <limits.h> |
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# ifndef PAGESIZE |
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# define PAGESIZE pagesize |
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# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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static long pagesize; |
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# else |
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# define BOOT_PAGESIZE (void)0 |
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# endif |
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#else |
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# define PAGESIZE 0 |
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# define BOOT_PAGESIZE (void)0 |
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#endif |
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38 |
root |
1.143 |
#if CORO_USE_VALGRIND |
39 |
root |
1.104 |
# include <valgrind/valgrind.h> |
40 |
root |
1.141 |
# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end)) |
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#else |
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# define REGISTER_STACK(cctx,start,end) |
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root |
1.104 |
#endif |
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45 |
root |
1.115 |
/* the maximum number of idle cctx that will be pooled */ |
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#define MAX_IDLE_CCTX 8 |
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48 |
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1.100 |
#define PERL_VERSION_ATLEAST(a,b,c) \ |
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(PERL_REVISION > (a) \ |
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|| (PERL_REVISION == (a) \ |
51 |
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&& (PERL_VERSION > (b) \ |
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|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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54 |
root |
1.102 |
#if !PERL_VERSION_ATLEAST (5,6,0) |
55 |
pcg |
1.46 |
# ifndef PL_ppaddr |
56 |
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# define PL_ppaddr ppaddr |
57 |
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# endif |
58 |
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# ifndef call_sv |
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# define call_sv perl_call_sv |
60 |
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# endif |
61 |
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# ifndef get_sv |
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# define get_sv perl_get_sv |
63 |
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# endif |
64 |
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# ifndef get_cv |
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# define get_cv perl_get_cv |
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# endif |
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# ifndef IS_PADGV |
68 |
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# define IS_PADGV(v) 0 |
69 |
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# endif |
70 |
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# ifndef IS_PADCONST |
71 |
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# define IS_PADCONST(v) 0 |
72 |
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# endif |
73 |
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#endif |
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75 |
root |
1.125 |
/* 5.8.7 */ |
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#ifndef SvRV_set |
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# define SvRV_set(s,v) SvRV(s) = (v) |
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#endif |
79 |
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80 |
root |
1.78 |
#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
81 |
root |
1.143 |
# undef CORO_STACKGUARD |
82 |
root |
1.78 |
#endif |
83 |
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84 |
root |
1.143 |
#ifndef CORO_STACKGUARD |
85 |
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# define CORO_STACKGUARD 0 |
86 |
root |
1.78 |
#endif |
87 |
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88 |
root |
1.127 |
/* prefer perl internal functions over our own? */ |
89 |
root |
1.143 |
#ifndef CORO_PREFER_PERL_FUNCTIONS |
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# define CORO_PREFER_PERL_FUNCTIONS 0 |
91 |
root |
1.3 |
#endif |
92 |
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93 |
root |
1.28 |
/* The next macro should declare a variable stacklevel that contains and approximation |
94 |
root |
1.23 |
* to the current C stack pointer. Its property is that it changes with each call |
95 |
root |
1.15 |
* and should be unique. */ |
96 |
root |
1.92 |
#define dSTACKLEVEL int stacklevel |
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#define STACKLEVEL ((void *)&stacklevel) |
98 |
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1.15 |
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99 |
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1.34 |
#define IN_DESTRUCT (PL_main_cv == Nullcv) |
100 |
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101 |
root |
1.100 |
#if __GNUC__ >= 3 |
102 |
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# define attribute(x) __attribute__(x) |
103 |
root |
1.131 |
# define BARRIER __asm__ __volatile__ ("" : : : "memory") |
104 |
root |
1.100 |
#else |
105 |
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# define attribute(x) |
106 |
root |
1.131 |
# define BARRIER |
107 |
root |
1.100 |
#endif |
108 |
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109 |
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#define NOINLINE attribute ((noinline)) |
110 |
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111 |
root |
1.23 |
#include "CoroAPI.h" |
112 |
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113 |
pcg |
1.55 |
#ifdef USE_ITHREADS |
114 |
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static perl_mutex coro_mutex; |
115 |
root |
1.69 |
# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
116 |
pcg |
1.55 |
# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
117 |
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#else |
118 |
root |
1.69 |
# define LOCK (void)0 |
119 |
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# define UNLOCK (void)0 |
120 |
pcg |
1.55 |
#endif |
121 |
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122 |
root |
1.136 |
/* helper storage struct for Coro::AIO */ |
123 |
root |
1.120 |
struct io_state |
124 |
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{ |
125 |
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int errorno; |
126 |
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I32 laststype; |
127 |
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int laststatval; |
128 |
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Stat_t statcache; |
129 |
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}; |
130 |
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131 |
root |
1.145 |
static size_t coro_stacksize = CORO_STACKSIZE; |
132 |
root |
1.23 |
static struct CoroAPI coroapi; |
133 |
pcg |
1.56 |
static AV *main_mainstack; /* used to differentiate between $main and others */ |
134 |
root |
1.88 |
static HV *coro_state_stash, *coro_stash; |
135 |
pcg |
1.58 |
static SV *coro_mortal; /* will be freed after next transfer */ |
136 |
root |
1.23 |
|
137 |
root |
1.107 |
static struct coro_cctx *cctx_first; |
138 |
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static int cctx_count, cctx_idle; |
139 |
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140 |
root |
1.92 |
/* this is a structure representing a c-level coroutine */ |
141 |
root |
1.106 |
typedef struct coro_cctx { |
142 |
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struct coro_cctx *next; |
143 |
root |
1.15 |
|
144 |
root |
1.93 |
/* the stack */ |
145 |
root |
1.15 |
void *sptr; |
146 |
root |
1.145 |
size_t ssize; |
147 |
root |
1.89 |
|
148 |
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/* cpu state */ |
149 |
root |
1.132 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
150 |
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JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
151 |
root |
1.93 |
JMPENV *top_env; |
152 |
root |
1.89 |
coro_context cctx; |
153 |
root |
1.104 |
|
154 |
root |
1.143 |
#if CORO_USE_VALGRIND |
155 |
root |
1.104 |
int valgrind_id; |
156 |
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#endif |
157 |
root |
1.145 |
char inuse, mapped; |
158 |
root |
1.106 |
} coro_cctx; |
159 |
root |
1.15 |
|
160 |
root |
1.111 |
enum { |
161 |
root |
1.133 |
CF_RUNNING = 0x0001, /* coroutine is running */ |
162 |
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CF_READY = 0x0002, /* coroutine is ready */ |
163 |
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CF_NEW = 0x0004, /* has never been switched to */ |
164 |
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CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
165 |
root |
1.111 |
}; |
166 |
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167 |
root |
1.92 |
/* this is a structure representing a perl-level coroutine */ |
168 |
root |
1.1 |
struct coro { |
169 |
root |
1.92 |
/* the c coroutine allocated to this perl coroutine, if any */ |
170 |
root |
1.106 |
coro_cctx *cctx; |
171 |
root |
1.92 |
|
172 |
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/* data associated with this coroutine (initial args) */ |
173 |
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AV *args; |
174 |
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int refcnt; |
175 |
root |
1.122 |
int save; /* CORO_SAVE flags */ |
176 |
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int flags; /* CF_ flags */ |
177 |
root |
1.92 |
|
178 |
root |
1.7 |
/* optionally saved, might be zero */ |
179 |
root |
1.122 |
AV *defav; /* @_ */ |
180 |
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SV *defsv; /* $_ */ |
181 |
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SV *errsv; /* $@ */ |
182 |
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SV *irssv; /* $/ */ |
183 |
root |
1.123 |
SV *irssv_sv; /* real $/ cache */ |
184 |
root |
1.1 |
|
185 |
root |
1.108 |
#define VAR(name,type) type name; |
186 |
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# include "state.h" |
187 |
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#undef VAR |
188 |
root |
1.1 |
|
189 |
root |
1.87 |
/* coro process data */ |
190 |
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int prio; |
191 |
root |
1.1 |
}; |
192 |
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193 |
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typedef struct coro *Coro__State; |
194 |
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typedef struct coro *Coro__State_or_hashref; |
195 |
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196 |
root |
1.137 |
/** Coro ********************************************************************/ |
197 |
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198 |
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#define PRIO_MAX 3 |
199 |
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#define PRIO_HIGH 1 |
200 |
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#define PRIO_NORMAL 0 |
201 |
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#define PRIO_LOW -1 |
202 |
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#define PRIO_IDLE -3 |
203 |
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#define PRIO_MIN -4 |
204 |
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205 |
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/* for Coro.pm */ |
206 |
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static SV *coro_current; |
207 |
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static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
208 |
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static int coro_nready; |
209 |
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210 |
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/** lowlevel stuff **********************************************************/ |
211 |
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212 |
root |
1.77 |
static AV * |
213 |
root |
1.146 |
coro_clone_padlist (pTHX_ CV *cv) |
214 |
root |
1.77 |
{ |
215 |
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AV *padlist = CvPADLIST (cv); |
216 |
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AV *newpadlist, *newpad; |
217 |
root |
1.3 |
|
218 |
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newpadlist = newAV (); |
219 |
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AvREAL_off (newpadlist); |
220 |
root |
1.100 |
#if PERL_VERSION_ATLEAST (5,9,0) |
221 |
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Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
222 |
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#else |
223 |
root |
1.77 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
224 |
root |
1.79 |
#endif |
225 |
root |
1.77 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
226 |
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--AvFILLp (padlist); |
227 |
root |
1.3 |
|
228 |
root |
1.77 |
av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
229 |
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av_store (newpadlist, 1, (SV *)newpad); |
230 |
root |
1.3 |
|
231 |
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return newpadlist; |
232 |
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} |
233 |
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234 |
root |
1.77 |
static void |
235 |
root |
1.146 |
free_padlist (pTHX_ AV *padlist) |
236 |
root |
1.3 |
{ |
237 |
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/* may be during global destruction */ |
238 |
pcg |
1.50 |
if (SvREFCNT (padlist)) |
239 |
root |
1.3 |
{ |
240 |
pcg |
1.50 |
I32 i = AvFILLp (padlist); |
241 |
root |
1.3 |
while (i >= 0) |
242 |
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{ |
243 |
pcg |
1.50 |
SV **svp = av_fetch (padlist, i--, FALSE); |
244 |
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if (svp) |
245 |
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{ |
246 |
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SV *sv; |
247 |
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while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
248 |
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SvREFCNT_dec (sv); |
249 |
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250 |
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SvREFCNT_dec (*svp); |
251 |
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} |
252 |
root |
1.3 |
} |
253 |
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254 |
pcg |
1.50 |
SvREFCNT_dec ((SV*)padlist); |
255 |
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} |
256 |
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} |
257 |
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258 |
root |
1.77 |
static int |
259 |
pcg |
1.54 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
260 |
pcg |
1.50 |
{ |
261 |
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AV *padlist; |
262 |
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AV *av = (AV *)mg->mg_obj; |
263 |
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264 |
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/* casting is fun. */ |
265 |
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while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
266 |
root |
1.146 |
free_padlist (aTHX_ padlist); |
267 |
root |
1.61 |
|
268 |
|
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SvREFCNT_dec (av); |
269 |
root |
1.76 |
|
270 |
|
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return 0; |
271 |
root |
1.3 |
} |
272 |
pcg |
1.50 |
|
273 |
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#define PERL_MAGIC_coro PERL_MAGIC_ext |
274 |
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275 |
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static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
276 |
root |
1.3 |
|
277 |
root |
1.109 |
#define CORO_MAGIC(cv) \ |
278 |
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SvMAGIC (cv) \ |
279 |
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? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
280 |
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? SvMAGIC (cv) \ |
281 |
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: mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
282 |
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: 0 |
283 |
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|
284 |
root |
1.7 |
/* the next two functions merely cache the padlists */ |
285 |
root |
1.77 |
static void |
286 |
root |
1.146 |
get_padlist (pTHX_ CV *cv) |
287 |
root |
1.3 |
{ |
288 |
root |
1.109 |
MAGIC *mg = CORO_MAGIC (cv); |
289 |
|
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AV *av; |
290 |
root |
1.4 |
|
291 |
root |
1.109 |
if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
292 |
|
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CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
293 |
root |
1.4 |
else |
294 |
root |
1.77 |
{ |
295 |
root |
1.143 |
#if CORO_PREFER_PERL_FUNCTIONS |
296 |
root |
1.96 |
/* this is probably cleaner, but also slower? */ |
297 |
root |
1.98 |
CV *cp = Perl_cv_clone (cv); |
298 |
root |
1.77 |
CvPADLIST (cv) = CvPADLIST (cp); |
299 |
|
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CvPADLIST (cp) = 0; |
300 |
|
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SvREFCNT_dec (cp); |
301 |
|
|
#else |
302 |
root |
1.146 |
CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
303 |
root |
1.77 |
#endif |
304 |
|
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} |
305 |
root |
1.4 |
} |
306 |
|
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|
307 |
root |
1.77 |
static void |
308 |
root |
1.146 |
put_padlist (pTHX_ CV *cv) |
309 |
root |
1.4 |
{ |
310 |
root |
1.109 |
MAGIC *mg = CORO_MAGIC (cv); |
311 |
|
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AV *av; |
312 |
root |
1.7 |
|
313 |
pcg |
1.50 |
if (!mg) |
314 |
root |
1.7 |
{ |
315 |
pcg |
1.50 |
sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
316 |
|
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mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
317 |
|
|
mg->mg_virtual = &vtbl_coro; |
318 |
|
|
mg->mg_obj = (SV *)newAV (); |
319 |
root |
1.7 |
} |
320 |
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|
321 |
root |
1.109 |
av = (AV *)mg->mg_obj; |
322 |
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|
323 |
|
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if (AvFILLp (av) >= AvMAX (av)) |
324 |
|
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av_extend (av, AvMAX (av) + 1); |
325 |
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|
326 |
|
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AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
327 |
root |
1.7 |
} |
328 |
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|
329 |
root |
1.137 |
/** load & save, init *******************************************************/ |
330 |
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|
331 |
root |
1.7 |
#define SB do { |
332 |
|
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#define SE } while (0) |
333 |
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|
334 |
root |
1.117 |
#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
335 |
root |
1.7 |
|
336 |
|
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static void |
337 |
root |
1.146 |
load_perl (pTHX_ Coro__State c) |
338 |
root |
1.7 |
{ |
339 |
root |
1.108 |
#define VAR(name,type) PL_ ## name = c->name; |
340 |
|
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# include "state.h" |
341 |
|
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#undef VAR |
342 |
root |
1.7 |
|
343 |
|
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if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
344 |
|
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if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
345 |
|
|
if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
346 |
root |
1.123 |
if (c->irssv) |
347 |
|
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{ |
348 |
|
|
if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
349 |
|
|
SvREFCNT_dec (c->irssv); |
350 |
|
|
else |
351 |
|
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{ |
352 |
|
|
REPLACE_SV (PL_rs, c->irssv); |
353 |
|
|
if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
354 |
|
|
sv_setsv (c->irssv_sv, PL_rs); |
355 |
|
|
} |
356 |
|
|
} |
357 |
root |
1.7 |
|
358 |
|
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{ |
359 |
|
|
dSP; |
360 |
|
|
CV *cv; |
361 |
|
|
|
362 |
|
|
/* now do the ugly restore mess */ |
363 |
|
|
while ((cv = (CV *)POPs)) |
364 |
|
|
{ |
365 |
root |
1.146 |
put_padlist (aTHX_ cv); /* mark this padlist as available */ |
366 |
root |
1.109 |
CvDEPTH (cv) = PTR2IV (POPs); |
367 |
|
|
CvPADLIST (cv) = (AV *)POPs; |
368 |
root |
1.7 |
} |
369 |
|
|
|
370 |
|
|
PUTBACK; |
371 |
|
|
} |
372 |
root |
1.142 |
assert (!PL_comppad || AvARRAY (PL_comppad));//D |
373 |
root |
1.7 |
} |
374 |
|
|
|
375 |
root |
1.3 |
static void |
376 |
root |
1.146 |
save_perl (pTHX_ Coro__State c) |
377 |
root |
1.3 |
{ |
378 |
root |
1.142 |
assert (!PL_comppad || AvARRAY (PL_comppad));//D |
379 |
root |
1.3 |
{ |
380 |
|
|
dSP; |
381 |
|
|
I32 cxix = cxstack_ix; |
382 |
root |
1.11 |
PERL_CONTEXT *ccstk = cxstack; |
383 |
root |
1.3 |
PERL_SI *top_si = PL_curstackinfo; |
384 |
|
|
|
385 |
|
|
/* |
386 |
|
|
* the worst thing you can imagine happens first - we have to save |
387 |
|
|
* (and reinitialize) all cv's in the whole callchain :( |
388 |
|
|
*/ |
389 |
|
|
|
390 |
root |
1.126 |
EXTEND (SP, 3 + 1); |
391 |
root |
1.3 |
PUSHs (Nullsv); |
392 |
|
|
/* this loop was inspired by pp_caller */ |
393 |
|
|
for (;;) |
394 |
|
|
{ |
395 |
root |
1.30 |
while (cxix >= 0) |
396 |
root |
1.3 |
{ |
397 |
root |
1.4 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
398 |
root |
1.3 |
|
399 |
root |
1.117 |
if (CxTYPE (cx) == CXt_SUB) |
400 |
root |
1.3 |
{ |
401 |
|
|
CV *cv = cx->blk_sub.cv; |
402 |
root |
1.109 |
|
403 |
|
|
if (CvDEPTH (cv)) |
404 |
root |
1.3 |
{ |
405 |
root |
1.109 |
EXTEND (SP, 3); |
406 |
root |
1.117 |
PUSHs ((SV *)CvPADLIST (cv)); |
407 |
root |
1.109 |
PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
408 |
root |
1.3 |
PUSHs ((SV *)cv); |
409 |
|
|
|
410 |
root |
1.109 |
CvDEPTH (cv) = 0; |
411 |
root |
1.146 |
get_padlist (aTHX_ cv); |
412 |
root |
1.3 |
} |
413 |
|
|
} |
414 |
|
|
} |
415 |
|
|
|
416 |
|
|
if (top_si->si_type == PERLSI_MAIN) |
417 |
|
|
break; |
418 |
|
|
|
419 |
|
|
top_si = top_si->si_prev; |
420 |
|
|
ccstk = top_si->si_cxstack; |
421 |
|
|
cxix = top_si->si_cxix; |
422 |
|
|
} |
423 |
|
|
|
424 |
|
|
PUTBACK; |
425 |
|
|
} |
426 |
|
|
|
427 |
root |
1.122 |
c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
428 |
|
|
c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
429 |
|
|
c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
430 |
|
|
c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
431 |
root |
1.7 |
|
432 |
root |
1.108 |
#define VAR(name,type)c->name = PL_ ## name; |
433 |
|
|
# include "state.h" |
434 |
|
|
#undef VAR |
435 |
root |
1.13 |
} |
436 |
|
|
|
437 |
|
|
/* |
438 |
|
|
* allocate various perl stacks. This is an exact copy |
439 |
|
|
* of perl.c:init_stacks, except that it uses less memory |
440 |
pcg |
1.52 |
* on the (sometimes correct) assumption that coroutines do |
441 |
|
|
* not usually need a lot of stackspace. |
442 |
root |
1.13 |
*/ |
443 |
root |
1.143 |
#if CORO_PREFER_PERL_FUNCTIONS |
444 |
root |
1.126 |
# define coro_init_stacks init_stacks |
445 |
|
|
#else |
446 |
root |
1.77 |
static void |
447 |
root |
1.146 |
coro_init_stacks (pTHX) |
448 |
root |
1.13 |
{ |
449 |
root |
1.116 |
PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
450 |
root |
1.13 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
451 |
|
|
PL_curstack = PL_curstackinfo->si_stack; |
452 |
|
|
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
453 |
|
|
|
454 |
|
|
PL_stack_base = AvARRAY(PL_curstack); |
455 |
|
|
PL_stack_sp = PL_stack_base; |
456 |
|
|
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
457 |
|
|
|
458 |
root |
1.116 |
New(50,PL_tmps_stack,128,SV*); |
459 |
root |
1.13 |
PL_tmps_floor = -1; |
460 |
|
|
PL_tmps_ix = -1; |
461 |
root |
1.116 |
PL_tmps_max = 128; |
462 |
root |
1.13 |
|
463 |
root |
1.116 |
New(54,PL_markstack,32,I32); |
464 |
root |
1.13 |
PL_markstack_ptr = PL_markstack; |
465 |
root |
1.116 |
PL_markstack_max = PL_markstack + 32; |
466 |
root |
1.13 |
|
467 |
pcg |
1.46 |
#ifdef SET_MARK_OFFSET |
468 |
root |
1.13 |
SET_MARK_OFFSET; |
469 |
pcg |
1.46 |
#endif |
470 |
root |
1.13 |
|
471 |
root |
1.116 |
New(54,PL_scopestack,32,I32); |
472 |
root |
1.13 |
PL_scopestack_ix = 0; |
473 |
root |
1.116 |
PL_scopestack_max = 32; |
474 |
root |
1.13 |
|
475 |
root |
1.116 |
New(54,PL_savestack,64,ANY); |
476 |
root |
1.13 |
PL_savestack_ix = 0; |
477 |
root |
1.116 |
PL_savestack_max = 64; |
478 |
root |
1.13 |
|
479 |
root |
1.100 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
480 |
root |
1.116 |
New(54,PL_retstack,16,OP*); |
481 |
root |
1.13 |
PL_retstack_ix = 0; |
482 |
root |
1.116 |
PL_retstack_max = 16; |
483 |
root |
1.71 |
#endif |
484 |
root |
1.3 |
} |
485 |
root |
1.127 |
#endif |
486 |
root |
1.1 |
|
487 |
root |
1.7 |
/* |
488 |
|
|
* destroy the stacks, the callchain etc... |
489 |
|
|
*/ |
490 |
root |
1.77 |
static void |
491 |
root |
1.146 |
coro_destroy_stacks (pTHX) |
492 |
root |
1.1 |
{ |
493 |
root |
1.34 |
if (!IN_DESTRUCT) |
494 |
root |
1.31 |
{ |
495 |
root |
1.126 |
/* restore all saved variables and stuff */ |
496 |
pcg |
1.52 |
LEAVE_SCOPE (0); |
497 |
root |
1.126 |
assert (PL_tmps_floor == -1); |
498 |
root |
1.31 |
|
499 |
root |
1.126 |
/* free all temporaries */ |
500 |
pcg |
1.52 |
FREETMPS; |
501 |
root |
1.126 |
assert (PL_tmps_ix == -1); |
502 |
pcg |
1.57 |
|
503 |
root |
1.134 |
/* unwind all extra stacks */ |
504 |
root |
1.126 |
POPSTACK_TO (PL_mainstack); |
505 |
root |
1.134 |
|
506 |
|
|
/* unwind main stack */ |
507 |
|
|
dounwind (-1); |
508 |
root |
1.31 |
} |
509 |
root |
1.7 |
|
510 |
root |
1.4 |
while (PL_curstackinfo->si_next) |
511 |
|
|
PL_curstackinfo = PL_curstackinfo->si_next; |
512 |
|
|
|
513 |
|
|
while (PL_curstackinfo) |
514 |
|
|
{ |
515 |
|
|
PERL_SI *p = PL_curstackinfo->si_prev; |
516 |
|
|
|
517 |
root |
1.34 |
if (!IN_DESTRUCT) |
518 |
root |
1.126 |
SvREFCNT_dec (PL_curstackinfo->si_stack); |
519 |
root |
1.7 |
|
520 |
pcg |
1.57 |
Safefree (PL_curstackinfo->si_cxstack); |
521 |
|
|
Safefree (PL_curstackinfo); |
522 |
root |
1.4 |
PL_curstackinfo = p; |
523 |
|
|
} |
524 |
|
|
|
525 |
pcg |
1.57 |
Safefree (PL_tmps_stack); |
526 |
|
|
Safefree (PL_markstack); |
527 |
|
|
Safefree (PL_scopestack); |
528 |
|
|
Safefree (PL_savestack); |
529 |
root |
1.100 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
530 |
pcg |
1.57 |
Safefree (PL_retstack); |
531 |
root |
1.71 |
#endif |
532 |
root |
1.1 |
} |
533 |
|
|
|
534 |
root |
1.137 |
/** coroutine stack handling ************************************************/ |
535 |
|
|
|
536 |
root |
1.13 |
static void |
537 |
root |
1.146 |
setup_coro (pTHX_ struct coro *coro) |
538 |
root |
1.13 |
{ |
539 |
root |
1.89 |
/* |
540 |
|
|
* emulate part of the perl startup here. |
541 |
|
|
*/ |
542 |
root |
1.146 |
coro_init_stacks (aTHX); |
543 |
root |
1.15 |
|
544 |
root |
1.117 |
PL_curcop = &PL_compiling; |
545 |
|
|
PL_in_eval = EVAL_NULL; |
546 |
root |
1.142 |
PL_comppad = 0; |
547 |
root |
1.117 |
PL_curpm = 0; |
548 |
|
|
PL_localizing = 0; |
549 |
|
|
PL_dirty = 0; |
550 |
|
|
PL_restartop = 0; |
551 |
root |
1.103 |
|
552 |
root |
1.102 |
{ |
553 |
|
|
dSP; |
554 |
|
|
LOGOP myop; |
555 |
|
|
|
556 |
|
|
SvREFCNT_dec (GvAV (PL_defgv)); |
557 |
|
|
GvAV (PL_defgv) = coro->args; coro->args = 0; |
558 |
|
|
|
559 |
|
|
Zero (&myop, 1, LOGOP); |
560 |
|
|
myop.op_next = Nullop; |
561 |
|
|
myop.op_flags = OPf_WANT_VOID; |
562 |
root |
1.89 |
|
563 |
root |
1.102 |
PUSHMARK (SP); |
564 |
root |
1.107 |
XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
565 |
root |
1.102 |
PUTBACK; |
566 |
root |
1.120 |
PL_op = (OP *)&myop; |
567 |
root |
1.102 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
568 |
|
|
SPAGAIN; |
569 |
root |
1.117 |
} |
570 |
root |
1.15 |
|
571 |
root |
1.117 |
ENTER; /* necessary e.g. for dounwind */ |
572 |
root |
1.13 |
} |
573 |
|
|
|
574 |
|
|
static void |
575 |
root |
1.146 |
free_coro_mortal (pTHX) |
576 |
root |
1.13 |
{ |
577 |
root |
1.89 |
if (coro_mortal) |
578 |
root |
1.15 |
{ |
579 |
root |
1.89 |
SvREFCNT_dec (coro_mortal); |
580 |
|
|
coro_mortal = 0; |
581 |
|
|
} |
582 |
root |
1.13 |
} |
583 |
|
|
|
584 |
root |
1.120 |
/* inject a fake call to Coro::State::_cctx_init into the execution */ |
585 |
root |
1.100 |
static void NOINLINE |
586 |
root |
1.146 |
prepare_cctx (pTHX_ coro_cctx *cctx) |
587 |
root |
1.99 |
{ |
588 |
|
|
dSP; |
589 |
root |
1.102 |
LOGOP myop; |
590 |
root |
1.99 |
|
591 |
root |
1.102 |
Zero (&myop, 1, LOGOP); |
592 |
root |
1.99 |
myop.op_next = PL_op; |
593 |
root |
1.120 |
myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
594 |
root |
1.102 |
|
595 |
|
|
PUSHMARK (SP); |
596 |
root |
1.120 |
EXTEND (SP, 2); |
597 |
|
|
PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
598 |
|
|
PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
599 |
root |
1.99 |
PUTBACK; |
600 |
root |
1.120 |
PL_op = (OP *)&myop; |
601 |
|
|
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
602 |
root |
1.99 |
SPAGAIN; |
603 |
|
|
} |
604 |
|
|
|
605 |
|
|
static void |
606 |
root |
1.89 |
coro_run (void *arg) |
607 |
root |
1.13 |
{ |
608 |
root |
1.146 |
dTHX; |
609 |
|
|
|
610 |
root |
1.120 |
/* coro_run is the alternative tail of transfer(), so unlock here. */ |
611 |
root |
1.102 |
UNLOCK; |
612 |
|
|
|
613 |
root |
1.13 |
/* |
614 |
root |
1.89 |
* this is a _very_ stripped down perl interpreter ;) |
615 |
root |
1.13 |
*/ |
616 |
root |
1.93 |
PL_top_env = &PL_start_env; |
617 |
root |
1.107 |
|
618 |
root |
1.102 |
/* inject call to cctx_init */ |
619 |
root |
1.146 |
prepare_cctx (aTHX_ (coro_cctx *)arg); |
620 |
root |
1.89 |
|
621 |
root |
1.94 |
/* somebody will hit me for both perl_run and PL_restartop */ |
622 |
root |
1.120 |
PL_restartop = PL_op; |
623 |
root |
1.102 |
perl_run (PL_curinterp); |
624 |
root |
1.89 |
|
625 |
root |
1.105 |
fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
626 |
root |
1.89 |
abort (); |
627 |
|
|
} |
628 |
|
|
|
629 |
root |
1.106 |
static coro_cctx * |
630 |
|
|
cctx_new () |
631 |
root |
1.89 |
{ |
632 |
root |
1.106 |
coro_cctx *cctx; |
633 |
root |
1.145 |
void *stack_start; |
634 |
|
|
size_t stack_size; |
635 |
root |
1.89 |
|
636 |
root |
1.107 |
++cctx_count; |
637 |
|
|
|
638 |
root |
1.124 |
Newz (0, cctx, 1, coro_cctx); |
639 |
root |
1.89 |
|
640 |
|
|
#if HAVE_MMAP |
641 |
root |
1.13 |
|
642 |
root |
1.145 |
cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
643 |
root |
1.120 |
/* mmap supposedly does allocate-on-write for us */ |
644 |
root |
1.106 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
645 |
root |
1.19 |
|
646 |
root |
1.141 |
if (cctx->sptr != (void *)-1) |
647 |
root |
1.13 |
{ |
648 |
root |
1.143 |
# if CORO_STACKGUARD |
649 |
|
|
mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
650 |
root |
1.94 |
# endif |
651 |
root |
1.145 |
stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
652 |
|
|
stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
653 |
|
|
cctx->mapped = 1; |
654 |
root |
1.141 |
} |
655 |
|
|
else |
656 |
|
|
#endif |
657 |
root |
1.89 |
{ |
658 |
root |
1.145 |
cctx->ssize = coro_stacksize * (long)sizeof (long); |
659 |
|
|
New (0, cctx->sptr, coro_stacksize, long); |
660 |
root |
1.13 |
|
661 |
root |
1.141 |
if (!cctx->sptr) |
662 |
|
|
{ |
663 |
|
|
perror ("FATAL: unable to allocate stack for coroutine"); |
664 |
|
|
_exit (EXIT_FAILURE); |
665 |
|
|
} |
666 |
root |
1.89 |
|
667 |
root |
1.145 |
stack_start = cctx->sptr; |
668 |
|
|
stack_size = cctx->ssize; |
669 |
|
|
} |
670 |
root |
1.104 |
|
671 |
root |
1.145 |
REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
672 |
|
|
coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); |
673 |
root |
1.13 |
|
674 |
root |
1.106 |
return cctx; |
675 |
root |
1.13 |
} |
676 |
|
|
|
677 |
root |
1.15 |
static void |
678 |
root |
1.115 |
cctx_destroy (coro_cctx *cctx) |
679 |
root |
1.15 |
{ |
680 |
root |
1.106 |
if (!cctx) |
681 |
root |
1.89 |
return; |
682 |
|
|
|
683 |
root |
1.107 |
--cctx_count; |
684 |
|
|
|
685 |
root |
1.143 |
#if CORO_USE_VALGRIND |
686 |
root |
1.106 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
687 |
root |
1.104 |
#endif |
688 |
|
|
|
689 |
root |
1.89 |
#if HAVE_MMAP |
690 |
root |
1.145 |
if (cctx->mapped) |
691 |
root |
1.141 |
munmap (cctx->sptr, cctx->ssize); |
692 |
|
|
else |
693 |
root |
1.89 |
#endif |
694 |
root |
1.141 |
Safefree (cctx->sptr); |
695 |
root |
1.89 |
|
696 |
root |
1.106 |
Safefree (cctx); |
697 |
root |
1.89 |
} |
698 |
root |
1.32 |
|
699 |
root |
1.106 |
static coro_cctx * |
700 |
root |
1.146 |
cctx_get (pTHX) |
701 |
root |
1.89 |
{ |
702 |
root |
1.145 |
while (cctx_first) |
703 |
root |
1.89 |
{ |
704 |
root |
1.145 |
coro_cctx *cctx = cctx_first; |
705 |
root |
1.106 |
cctx_first = cctx->next; |
706 |
root |
1.115 |
--cctx_idle; |
707 |
root |
1.145 |
|
708 |
|
|
if (cctx->ssize >= coro_stacksize) |
709 |
|
|
return cctx; |
710 |
|
|
|
711 |
|
|
cctx_destroy (cctx); |
712 |
root |
1.89 |
} |
713 |
root |
1.91 |
|
714 |
root |
1.145 |
PL_op = PL_op->op_next; |
715 |
|
|
return cctx_new (); |
716 |
root |
1.89 |
} |
717 |
root |
1.19 |
|
718 |
root |
1.89 |
static void |
719 |
root |
1.106 |
cctx_put (coro_cctx *cctx) |
720 |
root |
1.89 |
{ |
721 |
root |
1.115 |
/* free another cctx if overlimit */ |
722 |
|
|
if (cctx_idle >= MAX_IDLE_CCTX) |
723 |
|
|
{ |
724 |
|
|
coro_cctx *first = cctx_first; |
725 |
|
|
cctx_first = first->next; |
726 |
|
|
--cctx_idle; |
727 |
|
|
|
728 |
|
|
assert (!first->inuse); |
729 |
|
|
cctx_destroy (first); |
730 |
|
|
} |
731 |
|
|
|
732 |
root |
1.102 |
++cctx_idle; |
733 |
root |
1.106 |
cctx->next = cctx_first; |
734 |
|
|
cctx_first = cctx; |
735 |
root |
1.15 |
} |
736 |
|
|
|
737 |
root |
1.137 |
/** coroutine switching *****************************************************/ |
738 |
|
|
|
739 |
root |
1.84 |
/* never call directly, always through the coro_state_transfer global variable */ |
740 |
root |
1.100 |
static void NOINLINE |
741 |
root |
1.146 |
transfer (pTHX_ struct coro *prev, struct coro *next) |
742 |
root |
1.8 |
{ |
743 |
root |
1.15 |
dSTACKLEVEL; |
744 |
root |
1.8 |
|
745 |
root |
1.89 |
/* sometimes transfer is only called to set idle_sp */ |
746 |
root |
1.122 |
if (!next) |
747 |
root |
1.124 |
{ |
748 |
|
|
((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
749 |
root |
1.132 |
assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
750 |
root |
1.124 |
} |
751 |
root |
1.92 |
else if (prev != next) |
752 |
root |
1.8 |
{ |
753 |
root |
1.106 |
coro_cctx *prev__cctx; |
754 |
root |
1.89 |
|
755 |
root |
1.117 |
if (prev->flags & CF_NEW) |
756 |
root |
1.111 |
{ |
757 |
|
|
/* create a new empty context */ |
758 |
|
|
Newz (0, prev->cctx, 1, coro_cctx); |
759 |
|
|
prev->cctx->inuse = 1; |
760 |
root |
1.117 |
prev->flags &= ~CF_NEW; |
761 |
|
|
prev->flags |= CF_RUNNING; |
762 |
root |
1.111 |
} |
763 |
|
|
|
764 |
root |
1.117 |
/*TODO: must not croak here */ |
765 |
root |
1.112 |
if (!prev->flags & CF_RUNNING) |
766 |
|
|
croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
767 |
|
|
|
768 |
|
|
if (next->flags & CF_RUNNING) |
769 |
|
|
croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
770 |
root |
1.111 |
|
771 |
root |
1.133 |
if (next->flags & CF_DESTROYED) |
772 |
|
|
croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
773 |
|
|
|
774 |
root |
1.111 |
prev->flags &= ~CF_RUNNING; |
775 |
|
|
next->flags |= CF_RUNNING; |
776 |
|
|
|
777 |
root |
1.92 |
LOCK; |
778 |
root |
1.13 |
|
779 |
root |
1.118 |
if (next->flags & CF_NEW) |
780 |
root |
1.90 |
{ |
781 |
|
|
/* need to start coroutine */ |
782 |
root |
1.117 |
next->flags &= ~CF_NEW; |
783 |
root |
1.89 |
/* first get rid of the old state */ |
784 |
root |
1.146 |
save_perl (aTHX_ prev); |
785 |
root |
1.89 |
/* setup coroutine call */ |
786 |
root |
1.146 |
setup_coro (aTHX_ next); |
787 |
root |
1.112 |
/* need a new stack */ |
788 |
root |
1.124 |
assert (!next->cctx); |
789 |
root |
1.8 |
} |
790 |
root |
1.118 |
else |
791 |
|
|
{ |
792 |
|
|
/* coroutine already started */ |
793 |
root |
1.146 |
save_perl (aTHX_ prev); |
794 |
|
|
load_perl (aTHX_ next); |
795 |
root |
1.118 |
} |
796 |
root |
1.15 |
|
797 |
root |
1.106 |
prev__cctx = prev->cctx; |
798 |
root |
1.92 |
|
799 |
root |
1.106 |
/* possibly "free" the cctx */ |
800 |
root |
1.119 |
if (prev__cctx->idle_sp == STACKLEVEL) |
801 |
root |
1.92 |
{ |
802 |
root |
1.114 |
/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
803 |
root |
1.132 |
assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
804 |
root |
1.112 |
|
805 |
root |
1.117 |
prev->cctx = 0; |
806 |
|
|
|
807 |
root |
1.106 |
cctx_put (prev__cctx); |
808 |
root |
1.117 |
prev__cctx->inuse = 0; |
809 |
root |
1.92 |
} |
810 |
|
|
|
811 |
root |
1.106 |
if (!next->cctx) |
812 |
root |
1.92 |
{ |
813 |
root |
1.146 |
next->cctx = cctx_get (aTHX); |
814 |
root |
1.111 |
assert (!next->cctx->inuse); |
815 |
|
|
next->cctx->inuse = 1; |
816 |
root |
1.117 |
} |
817 |
root |
1.111 |
|
818 |
root |
1.117 |
if (prev__cctx != next->cctx) |
819 |
|
|
{ |
820 |
root |
1.106 |
prev__cctx->top_env = PL_top_env; |
821 |
|
|
PL_top_env = next->cctx->top_env; |
822 |
|
|
coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
823 |
root |
1.92 |
} |
824 |
|
|
|
825 |
root |
1.146 |
free_coro_mortal (aTHX); |
826 |
root |
1.92 |
UNLOCK; |
827 |
root |
1.8 |
} |
828 |
root |
1.39 |
} |
829 |
root |
1.23 |
|
830 |
root |
1.92 |
struct transfer_args |
831 |
|
|
{ |
832 |
|
|
struct coro *prev, *next; |
833 |
|
|
}; |
834 |
|
|
|
835 |
root |
1.146 |
#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) |
836 |
root |
1.92 |
|
837 |
root |
1.137 |
/** high level stuff ********************************************************/ |
838 |
|
|
|
839 |
root |
1.133 |
static int |
840 |
root |
1.146 |
coro_state_destroy (pTHX_ struct coro *coro) |
841 |
root |
1.87 |
{ |
842 |
root |
1.133 |
if (coro->flags & CF_DESTROYED) |
843 |
|
|
return 0; |
844 |
|
|
|
845 |
|
|
coro->flags |= CF_DESTROYED; |
846 |
root |
1.137 |
|
847 |
|
|
if (coro->flags & CF_READY) |
848 |
|
|
{ |
849 |
|
|
/* reduce nready, as destroying a ready coro effectively unreadies it */ |
850 |
root |
1.139 |
/* alternative: look through all ready queues and remove the coro */ |
851 |
root |
1.137 |
LOCK; |
852 |
|
|
--coro_nready; |
853 |
|
|
UNLOCK; |
854 |
|
|
} |
855 |
|
|
else |
856 |
|
|
coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
857 |
root |
1.87 |
|
858 |
|
|
if (coro->mainstack && coro->mainstack != main_mainstack) |
859 |
|
|
{ |
860 |
root |
1.140 |
struct coro temp; |
861 |
|
|
|
862 |
root |
1.133 |
assert (!(coro->flags & CF_RUNNING)); |
863 |
|
|
|
864 |
root |
1.122 |
Zero (&temp, 1, struct coro); |
865 |
|
|
temp.save = CORO_SAVE_ALL; |
866 |
root |
1.87 |
|
867 |
root |
1.117 |
if (coro->flags & CF_RUNNING) |
868 |
|
|
croak ("FATAL: tried to destroy currently running coroutine"); |
869 |
|
|
|
870 |
root |
1.146 |
save_perl (aTHX_ &temp); |
871 |
|
|
load_perl (aTHX_ coro); |
872 |
root |
1.87 |
|
873 |
root |
1.146 |
coro_destroy_stacks (aTHX); |
874 |
root |
1.87 |
|
875 |
root |
1.146 |
load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ |
876 |
root |
1.87 |
|
877 |
|
|
coro->mainstack = 0; |
878 |
|
|
} |
879 |
|
|
|
880 |
root |
1.115 |
cctx_destroy (coro->cctx); |
881 |
root |
1.87 |
SvREFCNT_dec (coro->args); |
882 |
root |
1.133 |
|
883 |
|
|
return 1; |
884 |
root |
1.87 |
} |
885 |
|
|
|
886 |
|
|
static int |
887 |
root |
1.134 |
coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
888 |
root |
1.87 |
{ |
889 |
|
|
struct coro *coro = (struct coro *)mg->mg_ptr; |
890 |
|
|
mg->mg_ptr = 0; |
891 |
|
|
|
892 |
root |
1.134 |
if (--coro->refcnt < 0) |
893 |
|
|
{ |
894 |
root |
1.146 |
coro_state_destroy (aTHX_ coro); |
895 |
root |
1.134 |
Safefree (coro); |
896 |
|
|
} |
897 |
root |
1.133 |
|
898 |
root |
1.87 |
return 0; |
899 |
|
|
} |
900 |
|
|
|
901 |
|
|
static int |
902 |
root |
1.98 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
903 |
root |
1.87 |
{ |
904 |
|
|
struct coro *coro = (struct coro *)mg->mg_ptr; |
905 |
|
|
|
906 |
|
|
++coro->refcnt; |
907 |
|
|
|
908 |
|
|
return 0; |
909 |
|
|
} |
910 |
|
|
|
911 |
root |
1.100 |
static MGVTBL coro_state_vtbl = { |
912 |
|
|
0, 0, 0, 0, |
913 |
root |
1.134 |
coro_state_free, |
914 |
root |
1.100 |
0, |
915 |
|
|
#ifdef MGf_DUP |
916 |
|
|
coro_state_dup, |
917 |
root |
1.102 |
#else |
918 |
|
|
# define MGf_DUP 0 |
919 |
root |
1.100 |
#endif |
920 |
|
|
}; |
921 |
root |
1.87 |
|
922 |
|
|
static struct coro * |
923 |
root |
1.146 |
SvSTATE_ (pTHX_ SV *coro) |
924 |
root |
1.87 |
{ |
925 |
root |
1.88 |
HV *stash; |
926 |
|
|
MAGIC *mg; |
927 |
|
|
|
928 |
|
|
if (SvROK (coro)) |
929 |
|
|
coro = SvRV (coro); |
930 |
|
|
|
931 |
|
|
stash = SvSTASH (coro); |
932 |
|
|
if (stash != coro_stash && stash != coro_state_stash) |
933 |
|
|
{ |
934 |
|
|
/* very slow, but rare, check */ |
935 |
|
|
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
936 |
|
|
croak ("Coro::State object required"); |
937 |
|
|
} |
938 |
|
|
|
939 |
root |
1.144 |
mg = CORO_MAGIC (coro); |
940 |
root |
1.87 |
return (struct coro *)mg->mg_ptr; |
941 |
|
|
} |
942 |
root |
1.23 |
|
943 |
root |
1.146 |
#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
944 |
|
|
|
945 |
root |
1.23 |
static void |
946 |
root |
1.146 |
prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
947 |
root |
1.23 |
{ |
948 |
root |
1.122 |
ta->prev = SvSTATE (prev_sv); |
949 |
|
|
ta->next = SvSTATE (next_sv); |
950 |
root |
1.92 |
} |
951 |
|
|
|
952 |
|
|
static void |
953 |
root |
1.122 |
api_transfer (SV *prev_sv, SV *next_sv) |
954 |
root |
1.92 |
{ |
955 |
root |
1.146 |
dTHX; |
956 |
root |
1.92 |
struct transfer_args ta; |
957 |
|
|
|
958 |
root |
1.146 |
prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
959 |
root |
1.92 |
TRANSFER (ta); |
960 |
root |
1.21 |
} |
961 |
|
|
|
962 |
root |
1.122 |
static int |
963 |
|
|
api_save (SV *coro_sv, int new_save) |
964 |
|
|
{ |
965 |
root |
1.146 |
dTHX; |
966 |
root |
1.122 |
struct coro *coro = SvSTATE (coro_sv); |
967 |
|
|
int old_save = coro->save; |
968 |
|
|
|
969 |
|
|
if (new_save >= 0) |
970 |
|
|
coro->save = new_save; |
971 |
|
|
|
972 |
|
|
return old_save; |
973 |
|
|
} |
974 |
|
|
|
975 |
root |
1.22 |
/** Coro ********************************************************************/ |
976 |
|
|
|
977 |
|
|
static void |
978 |
root |
1.146 |
coro_enq (pTHX_ SV *coro_sv) |
979 |
root |
1.22 |
{ |
980 |
root |
1.112 |
av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
981 |
root |
1.22 |
} |
982 |
|
|
|
983 |
|
|
static SV * |
984 |
root |
1.146 |
coro_deq (pTHX_ int min_prio) |
985 |
root |
1.22 |
{ |
986 |
|
|
int prio = PRIO_MAX - PRIO_MIN; |
987 |
|
|
|
988 |
|
|
min_prio -= PRIO_MIN; |
989 |
|
|
if (min_prio < 0) |
990 |
|
|
min_prio = 0; |
991 |
|
|
|
992 |
|
|
for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
993 |
root |
1.83 |
if (AvFILLp (coro_ready [prio]) >= 0) |
994 |
root |
1.137 |
return av_shift (coro_ready [prio]); |
995 |
root |
1.22 |
|
996 |
|
|
return 0; |
997 |
|
|
} |
998 |
|
|
|
999 |
root |
1.111 |
static int |
1000 |
|
|
api_ready (SV *coro_sv) |
1001 |
root |
1.23 |
{ |
1002 |
root |
1.146 |
dTHX; |
1003 |
root |
1.111 |
struct coro *coro; |
1004 |
|
|
|
1005 |
|
|
if (SvROK (coro_sv)) |
1006 |
|
|
coro_sv = SvRV (coro_sv); |
1007 |
|
|
|
1008 |
|
|
coro = SvSTATE (coro_sv); |
1009 |
root |
1.112 |
|
1010 |
root |
1.111 |
if (coro->flags & CF_READY) |
1011 |
|
|
return 0; |
1012 |
pcg |
1.56 |
|
1013 |
root |
1.111 |
coro->flags |= CF_READY; |
1014 |
root |
1.39 |
|
1015 |
pcg |
1.55 |
LOCK; |
1016 |
root |
1.146 |
coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); |
1017 |
root |
1.137 |
++coro_nready; |
1018 |
pcg |
1.55 |
UNLOCK; |
1019 |
root |
1.111 |
|
1020 |
|
|
return 1; |
1021 |
|
|
} |
1022 |
|
|
|
1023 |
|
|
static int |
1024 |
|
|
api_is_ready (SV *coro_sv) |
1025 |
|
|
{ |
1026 |
root |
1.146 |
dTHX; |
1027 |
root |
1.130 |
return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1028 |
root |
1.23 |
} |
1029 |
|
|
|
1030 |
|
|
static void |
1031 |
root |
1.146 |
prepare_schedule (pTHX_ struct transfer_args *ta) |
1032 |
root |
1.23 |
{ |
1033 |
root |
1.133 |
SV *prev_sv, *next_sv; |
1034 |
root |
1.88 |
|
1035 |
|
|
for (;;) |
1036 |
|
|
{ |
1037 |
|
|
LOCK; |
1038 |
root |
1.146 |
next_sv = coro_deq (aTHX_ PRIO_MIN); |
1039 |
root |
1.88 |
|
1040 |
root |
1.133 |
/* nothing to schedule: call the idle handler */ |
1041 |
|
|
if (!next_sv) |
1042 |
|
|
{ |
1043 |
root |
1.140 |
dSP; |
1044 |
root |
1.138 |
UNLOCK; |
1045 |
root |
1.133 |
|
1046 |
|
|
ENTER; |
1047 |
|
|
SAVETMPS; |
1048 |
root |
1.23 |
|
1049 |
root |
1.133 |
PUSHMARK (SP); |
1050 |
|
|
PUTBACK; |
1051 |
|
|
call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
1052 |
|
|
|
1053 |
|
|
FREETMPS; |
1054 |
|
|
LEAVE; |
1055 |
|
|
continue; |
1056 |
|
|
} |
1057 |
root |
1.88 |
|
1058 |
root |
1.133 |
ta->next = SvSTATE (next_sv); |
1059 |
pcg |
1.55 |
|
1060 |
root |
1.133 |
/* cannot transfer to destroyed coros, skip and look for next */ |
1061 |
|
|
if (ta->next->flags & CF_DESTROYED) |
1062 |
|
|
{ |
1063 |
root |
1.138 |
UNLOCK; |
1064 |
root |
1.133 |
SvREFCNT_dec (next_sv); |
1065 |
root |
1.137 |
/* coro_nready is already taken care of by destroy */ |
1066 |
root |
1.133 |
continue; |
1067 |
|
|
} |
1068 |
root |
1.23 |
|
1069 |
root |
1.137 |
--coro_nready; |
1070 |
|
|
UNLOCK; |
1071 |
root |
1.133 |
break; |
1072 |
root |
1.88 |
} |
1073 |
|
|
|
1074 |
root |
1.133 |
/* free this only after the transfer */ |
1075 |
|
|
prev_sv = SvRV (coro_current); |
1076 |
|
|
SvRV_set (coro_current, next_sv); |
1077 |
|
|
ta->prev = SvSTATE (prev_sv); |
1078 |
|
|
|
1079 |
|
|
assert (ta->next->flags & CF_READY); |
1080 |
|
|
ta->next->flags &= ~CF_READY; |
1081 |
root |
1.23 |
|
1082 |
root |
1.99 |
LOCK; |
1083 |
root |
1.146 |
free_coro_mortal (aTHX); |
1084 |
root |
1.133 |
coro_mortal = prev_sv; |
1085 |
root |
1.99 |
UNLOCK; |
1086 |
root |
1.92 |
} |
1087 |
|
|
|
1088 |
|
|
static void |
1089 |
root |
1.146 |
prepare_cede (pTHX_ struct transfer_args *ta) |
1090 |
root |
1.92 |
{ |
1091 |
root |
1.117 |
api_ready (coro_current); |
1092 |
root |
1.146 |
prepare_schedule (aTHX_ ta); |
1093 |
root |
1.131 |
} |
1094 |
pcg |
1.55 |
|
1095 |
root |
1.131 |
static int |
1096 |
root |
1.146 |
prepare_cede_notself (pTHX_ struct transfer_args *ta) |
1097 |
root |
1.131 |
{ |
1098 |
|
|
if (coro_nready) |
1099 |
|
|
{ |
1100 |
|
|
SV *prev = SvRV (coro_current); |
1101 |
root |
1.146 |
prepare_schedule (aTHX_ ta); |
1102 |
root |
1.131 |
api_ready (prev); |
1103 |
|
|
return 1; |
1104 |
|
|
} |
1105 |
|
|
else |
1106 |
|
|
return 0; |
1107 |
root |
1.39 |
} |
1108 |
|
|
|
1109 |
root |
1.92 |
static void |
1110 |
|
|
api_schedule (void) |
1111 |
|
|
{ |
1112 |
root |
1.146 |
dTHX; |
1113 |
root |
1.92 |
struct transfer_args ta; |
1114 |
|
|
|
1115 |
root |
1.146 |
prepare_schedule (aTHX_ &ta); |
1116 |
root |
1.92 |
TRANSFER (ta); |
1117 |
|
|
} |
1118 |
root |
1.89 |
|
1119 |
root |
1.131 |
static int |
1120 |
root |
1.39 |
api_cede (void) |
1121 |
|
|
{ |
1122 |
root |
1.146 |
dTHX; |
1123 |
root |
1.92 |
struct transfer_args ta; |
1124 |
root |
1.89 |
|
1125 |
root |
1.146 |
prepare_cede (aTHX_ &ta); |
1126 |
root |
1.131 |
|
1127 |
|
|
if (ta.prev != ta.next) |
1128 |
|
|
{ |
1129 |
|
|
TRANSFER (ta); |
1130 |
|
|
return 1; |
1131 |
|
|
} |
1132 |
|
|
else |
1133 |
|
|
return 0; |
1134 |
|
|
} |
1135 |
|
|
|
1136 |
|
|
static int |
1137 |
|
|
api_cede_notself (void) |
1138 |
|
|
{ |
1139 |
root |
1.146 |
dTHX; |
1140 |
root |
1.131 |
struct transfer_args ta; |
1141 |
|
|
|
1142 |
root |
1.146 |
if (prepare_cede_notself (aTHX_ &ta)) |
1143 |
root |
1.131 |
{ |
1144 |
|
|
TRANSFER (ta); |
1145 |
|
|
return 1; |
1146 |
|
|
} |
1147 |
|
|
else |
1148 |
|
|
return 0; |
1149 |
root |
1.23 |
} |
1150 |
|
|
|
1151 |
root |
1.3 |
MODULE = Coro::State PACKAGE = Coro::State |
1152 |
root |
1.1 |
|
1153 |
root |
1.87 |
PROTOTYPES: DISABLE |
1154 |
root |
1.1 |
|
1155 |
root |
1.3 |
BOOT: |
1156 |
root |
1.88 |
{ |
1157 |
pcg |
1.55 |
#ifdef USE_ITHREADS |
1158 |
|
|
MUTEX_INIT (&coro_mutex); |
1159 |
|
|
#endif |
1160 |
root |
1.78 |
BOOT_PAGESIZE; |
1161 |
pcg |
1.55 |
|
1162 |
root |
1.14 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1163 |
root |
1.7 |
|
1164 |
root |
1.122 |
newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
1165 |
|
|
newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
1166 |
|
|
newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
1167 |
|
|
newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
1168 |
|
|
newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
1169 |
root |
1.7 |
|
1170 |
root |
1.12 |
main_mainstack = PL_mainstack; |
1171 |
root |
1.23 |
|
1172 |
root |
1.26 |
coroapi.ver = CORO_API_VERSION; |
1173 |
|
|
coroapi.transfer = api_transfer; |
1174 |
root |
1.87 |
|
1175 |
|
|
assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1176 |
root |
1.9 |
} |
1177 |
root |
1.3 |
|
1178 |
root |
1.87 |
SV * |
1179 |
root |
1.86 |
new (char *klass, ...) |
1180 |
root |
1.1 |
CODE: |
1181 |
root |
1.86 |
{ |
1182 |
root |
1.87 |
struct coro *coro; |
1183 |
|
|
HV *hv; |
1184 |
root |
1.86 |
int i; |
1185 |
|
|
|
1186 |
pcg |
1.47 |
Newz (0, coro, 1, struct coro); |
1187 |
root |
1.86 |
coro->args = newAV (); |
1188 |
root |
1.122 |
coro->save = CORO_SAVE_ALL; |
1189 |
root |
1.117 |
coro->flags = CF_NEW; |
1190 |
root |
1.86 |
|
1191 |
root |
1.89 |
hv = newHV (); |
1192 |
|
|
sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1193 |
|
|
RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1194 |
|
|
|
1195 |
root |
1.86 |
for (i = 1; i < items; i++) |
1196 |
|
|
av_push (coro->args, newSVsv (ST (i))); |
1197 |
|
|
} |
1198 |
root |
1.1 |
OUTPUT: |
1199 |
|
|
RETVAL |
1200 |
|
|
|
1201 |
root |
1.122 |
int |
1202 |
|
|
save (SV *coro, int new_save = -1) |
1203 |
|
|
CODE: |
1204 |
|
|
RETVAL = api_save (coro, new_save); |
1205 |
|
|
OUTPUT: |
1206 |
|
|
RETVAL |
1207 |
|
|
|
1208 |
root |
1.1 |
void |
1209 |
root |
1.94 |
_set_stacklevel (...) |
1210 |
root |
1.92 |
ALIAS: |
1211 |
root |
1.94 |
Coro::State::transfer = 1 |
1212 |
|
|
Coro::schedule = 2 |
1213 |
|
|
Coro::cede = 3 |
1214 |
root |
1.131 |
Coro::cede_notself = 4 |
1215 |
root |
1.1 |
CODE: |
1216 |
root |
1.87 |
{ |
1217 |
root |
1.92 |
struct transfer_args ta; |
1218 |
root |
1.1 |
|
1219 |
root |
1.92 |
switch (ix) |
1220 |
root |
1.1 |
{ |
1221 |
root |
1.92 |
case 0: |
1222 |
root |
1.106 |
ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1223 |
root |
1.94 |
ta.next = 0; |
1224 |
|
|
break; |
1225 |
|
|
|
1226 |
|
|
case 1: |
1227 |
root |
1.122 |
if (items != 2) |
1228 |
|
|
croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
1229 |
root |
1.92 |
|
1230 |
root |
1.146 |
prepare_transfer (aTHX_ &ta, ST (0), ST (1)); |
1231 |
root |
1.92 |
break; |
1232 |
|
|
|
1233 |
root |
1.94 |
case 2: |
1234 |
root |
1.146 |
prepare_schedule (aTHX_ &ta); |
1235 |
root |
1.92 |
break; |
1236 |
|
|
|
1237 |
root |
1.94 |
case 3: |
1238 |
root |
1.146 |
prepare_cede (aTHX_ &ta); |
1239 |
root |
1.92 |
break; |
1240 |
root |
1.131 |
|
1241 |
|
|
case 4: |
1242 |
root |
1.146 |
if (!prepare_cede_notself (aTHX_ &ta)) |
1243 |
root |
1.131 |
XSRETURN_EMPTY; |
1244 |
|
|
|
1245 |
|
|
break; |
1246 |
root |
1.92 |
} |
1247 |
root |
1.1 |
|
1248 |
root |
1.131 |
BARRIER; |
1249 |
root |
1.92 |
TRANSFER (ta); |
1250 |
root |
1.135 |
|
1251 |
|
|
if (GIMME_V != G_VOID && ta.next != ta.prev) |
1252 |
|
|
XSRETURN_YES; |
1253 |
root |
1.87 |
} |
1254 |
root |
1.1 |
|
1255 |
root |
1.133 |
bool |
1256 |
|
|
_destroy (SV *coro_sv) |
1257 |
root |
1.87 |
CODE: |
1258 |
root |
1.146 |
RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
1259 |
root |
1.133 |
OUTPUT: |
1260 |
|
|
RETVAL |
1261 |
root |
1.12 |
|
1262 |
root |
1.7 |
void |
1263 |
root |
1.87 |
_exit (code) |
1264 |
root |
1.20 |
int code |
1265 |
|
|
PROTOTYPE: $ |
1266 |
|
|
CODE: |
1267 |
|
|
_exit (code); |
1268 |
root |
1.1 |
|
1269 |
root |
1.106 |
int |
1270 |
root |
1.145 |
cctx_stacksize (int new_stacksize = 0) |
1271 |
|
|
CODE: |
1272 |
|
|
RETVAL = coro_stacksize; |
1273 |
|
|
if (new_stacksize) |
1274 |
|
|
coro_stacksize = new_stacksize; |
1275 |
|
|
OUTPUT: |
1276 |
|
|
RETVAL |
1277 |
|
|
|
1278 |
|
|
int |
1279 |
root |
1.106 |
cctx_count () |
1280 |
|
|
CODE: |
1281 |
|
|
RETVAL = cctx_count; |
1282 |
|
|
OUTPUT: |
1283 |
|
|
RETVAL |
1284 |
|
|
|
1285 |
|
|
int |
1286 |
|
|
cctx_idle () |
1287 |
|
|
CODE: |
1288 |
|
|
RETVAL = cctx_idle; |
1289 |
|
|
OUTPUT: |
1290 |
|
|
RETVAL |
1291 |
|
|
|
1292 |
root |
1.21 |
MODULE = Coro::State PACKAGE = Coro |
1293 |
|
|
|
1294 |
|
|
BOOT: |
1295 |
|
|
{ |
1296 |
root |
1.22 |
int i; |
1297 |
|
|
|
1298 |
root |
1.88 |
coro_stash = gv_stashpv ("Coro", TRUE); |
1299 |
|
|
|
1300 |
|
|
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1301 |
|
|
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1302 |
|
|
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1303 |
|
|
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1304 |
|
|
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1305 |
|
|
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1306 |
root |
1.22 |
|
1307 |
root |
1.117 |
coro_current = get_sv ("Coro::current", FALSE); |
1308 |
|
|
SvREADONLY_on (coro_current); |
1309 |
root |
1.22 |
|
1310 |
|
|
for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1311 |
|
|
coro_ready[i] = newAV (); |
1312 |
root |
1.26 |
|
1313 |
|
|
{ |
1314 |
|
|
SV *sv = perl_get_sv("Coro::API", 1); |
1315 |
|
|
|
1316 |
root |
1.131 |
coroapi.schedule = api_schedule; |
1317 |
|
|
coroapi.save = api_save; |
1318 |
|
|
coroapi.cede = api_cede; |
1319 |
|
|
coroapi.cede_notself = api_cede_notself; |
1320 |
|
|
coroapi.ready = api_ready; |
1321 |
|
|
coroapi.is_ready = api_is_ready; |
1322 |
|
|
coroapi.nready = &coro_nready; |
1323 |
|
|
coroapi.current = coro_current; |
1324 |
root |
1.26 |
|
1325 |
|
|
GCoroAPI = &coroapi; |
1326 |
root |
1.81 |
sv_setiv (sv, (IV)&coroapi); |
1327 |
|
|
SvREADONLY_on (sv); |
1328 |
root |
1.26 |
} |
1329 |
root |
1.21 |
} |
1330 |
|
|
|
1331 |
root |
1.122 |
void |
1332 |
|
|
_set_current (SV *current) |
1333 |
|
|
PROTOTYPE: $ |
1334 |
|
|
CODE: |
1335 |
|
|
SvREFCNT_dec (SvRV (coro_current)); |
1336 |
|
|
SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1337 |
|
|
|
1338 |
root |
1.92 |
int |
1339 |
|
|
prio (Coro::State coro, int newprio = 0) |
1340 |
|
|
ALIAS: |
1341 |
|
|
nice = 1 |
1342 |
|
|
CODE: |
1343 |
|
|
{ |
1344 |
|
|
RETVAL = coro->prio; |
1345 |
|
|
|
1346 |
|
|
if (items > 1) |
1347 |
|
|
{ |
1348 |
|
|
if (ix) |
1349 |
root |
1.129 |
newprio = coro->prio - newprio; |
1350 |
root |
1.92 |
|
1351 |
|
|
if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1352 |
|
|
if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1353 |
|
|
|
1354 |
|
|
coro->prio = newprio; |
1355 |
|
|
} |
1356 |
|
|
} |
1357 |
root |
1.130 |
OUTPUT: |
1358 |
|
|
RETVAL |
1359 |
root |
1.92 |
|
1360 |
root |
1.111 |
SV * |
1361 |
root |
1.89 |
ready (SV *self) |
1362 |
root |
1.35 |
PROTOTYPE: $ |
1363 |
root |
1.21 |
CODE: |
1364 |
root |
1.111 |
RETVAL = boolSV (api_ready (self)); |
1365 |
|
|
OUTPUT: |
1366 |
|
|
RETVAL |
1367 |
|
|
|
1368 |
|
|
SV * |
1369 |
|
|
is_ready (SV *self) |
1370 |
|
|
PROTOTYPE: $ |
1371 |
|
|
CODE: |
1372 |
|
|
RETVAL = boolSV (api_is_ready (self)); |
1373 |
|
|
OUTPUT: |
1374 |
|
|
RETVAL |
1375 |
pcg |
1.50 |
|
1376 |
root |
1.25 |
int |
1377 |
root |
1.87 |
nready (...) |
1378 |
root |
1.25 |
PROTOTYPE: |
1379 |
|
|
CODE: |
1380 |
|
|
RETVAL = coro_nready; |
1381 |
|
|
OUTPUT: |
1382 |
|
|
RETVAL |
1383 |
|
|
|
1384 |
root |
1.89 |
MODULE = Coro::State PACKAGE = Coro::AIO |
1385 |
|
|
|
1386 |
root |
1.70 |
SV * |
1387 |
root |
1.89 |
_get_state () |
1388 |
root |
1.70 |
CODE: |
1389 |
|
|
{ |
1390 |
root |
1.121 |
struct io_state *data; |
1391 |
|
|
|
1392 |
root |
1.120 |
RETVAL = newSV (sizeof (struct io_state)); |
1393 |
root |
1.121 |
data = (struct io_state *)SvPVX (RETVAL); |
1394 |
root |
1.120 |
SvCUR_set (RETVAL, sizeof (struct io_state)); |
1395 |
|
|
SvPOK_only (RETVAL); |
1396 |
|
|
|
1397 |
|
|
data->errorno = errno; |
1398 |
|
|
data->laststype = PL_laststype; |
1399 |
|
|
data->laststatval = PL_laststatval; |
1400 |
|
|
data->statcache = PL_statcache; |
1401 |
root |
1.70 |
} |
1402 |
|
|
OUTPUT: |
1403 |
|
|
RETVAL |
1404 |
|
|
|
1405 |
|
|
void |
1406 |
root |
1.89 |
_set_state (char *data_) |
1407 |
root |
1.70 |
PROTOTYPE: $ |
1408 |
|
|
CODE: |
1409 |
|
|
{ |
1410 |
root |
1.120 |
struct io_state *data = (void *)data_; |
1411 |
root |
1.70 |
|
1412 |
root |
1.120 |
errno = data->errorno; |
1413 |
|
|
PL_laststype = data->laststype; |
1414 |
root |
1.70 |
PL_laststatval = data->laststatval; |
1415 |
root |
1.120 |
PL_statcache = data->statcache; |
1416 |
root |
1.70 |
} |
1417 |
root |
1.120 |
|