|
|
1 | #define NDEBUG 1 |
|
|
2 | |
|
|
3 | #include "libcoro/coro.c" |
|
|
4 | |
1 | #define PERL_NO_GET_CONTEXT |
5 | #define PERL_NO_GET_CONTEXT |
2 | |
6 | #define PERL_EXT |
3 | #include "libcoro/coro.c" |
|
|
4 | |
7 | |
5 | #include "EXTERN.h" |
8 | #include "EXTERN.h" |
6 | #include "perl.h" |
9 | #include "perl.h" |
7 | #include "XSUB.h" |
10 | #include "XSUB.h" |
|
|
11 | #include "perliol.h" |
8 | |
12 | |
9 | #include "patchlevel.h" |
13 | #include "schmorp.h" |
10 | |
14 | |
11 | #if PERL_VERSION < 6 |
15 | #include <stdio.h> |
12 | # ifndef PL_ppaddr |
16 | #include <errno.h> |
13 | # define PL_ppaddr ppaddr |
17 | #include <assert.h> |
14 | # endif |
18 | |
15 | # ifndef call_sv |
|
|
16 | # define call_sv perl_call_sv |
|
|
17 | # endif |
|
|
18 | # ifndef get_sv |
|
|
19 | # define get_sv perl_get_sv |
|
|
20 | # endif |
|
|
21 | # ifndef get_cv |
|
|
22 | # define get_cv perl_get_cv |
|
|
23 | # endif |
|
|
24 | # ifndef IS_PADGV |
|
|
25 | # define IS_PADGV(v) 0 |
|
|
26 | # endif |
|
|
27 | # ifndef IS_PADCONST |
19 | #ifndef SVs_PADSTALE |
28 | # define IS_PADCONST(v) 0 |
20 | # define SVs_PADSTALE 0 |
29 | # endif |
|
|
30 | #endif |
21 | #endif |
31 | |
22 | |
32 | #include <errno.h> |
23 | #ifdef WIN32 |
33 | |
24 | # undef setjmp |
34 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
25 | # undef longjmp |
35 | # undef STACKGUARD |
26 | # undef _exit |
36 | #endif |
27 | # define setjmp _setjmp /* deep magic */ |
37 | |
28 | #else |
38 | #ifndef STACKGUARD |
29 | # include <inttypes.h> /* most portable stdint.h */ |
39 | # define STACKGUARD 0 |
|
|
40 | #endif |
30 | #endif |
41 | |
31 | |
42 | #ifdef HAVE_MMAP |
32 | #ifdef HAVE_MMAP |
43 | # include <unistd.h> |
33 | # include <unistd.h> |
44 | # include <sys/mman.h> |
34 | # include <sys/mman.h> |
… | |
… | |
53 | # ifndef PAGESIZE |
43 | # ifndef PAGESIZE |
54 | # define PAGESIZE pagesize |
44 | # define PAGESIZE pagesize |
55 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
45 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
56 | static long pagesize; |
46 | static long pagesize; |
57 | # else |
47 | # else |
58 | # define BOOT_PAGESIZE |
48 | # define BOOT_PAGESIZE (void)0 |
|
|
49 | # endif |
|
|
50 | #else |
|
|
51 | # define PAGESIZE 0 |
|
|
52 | # define BOOT_PAGESIZE (void)0 |
|
|
53 | #endif |
|
|
54 | |
|
|
55 | #if CORO_USE_VALGRIND |
|
|
56 | # include <valgrind/valgrind.h> |
|
|
57 | #endif |
|
|
58 | |
|
|
59 | /* the maximum number of idle cctx that will be pooled */ |
|
|
60 | static int cctx_max_idle = 4; |
|
|
61 | |
|
|
62 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
|
|
63 | # undef CORO_STACKGUARD |
|
|
64 | #endif |
|
|
65 | |
|
|
66 | #ifndef CORO_STACKGUARD |
|
|
67 | # define CORO_STACKGUARD 0 |
|
|
68 | #endif |
|
|
69 | |
|
|
70 | /* prefer perl internal functions over our own? */ |
|
|
71 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
|
|
72 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
|
|
73 | #endif |
|
|
74 | |
|
|
75 | /* The next macros try to return the current stack pointer, in an as |
|
|
76 | * portable way as possible. */ |
|
|
77 | #if __GNUC__ >= 4 |
|
|
78 | # define dSTACKLEVEL int stacklevel_dummy |
|
|
79 | # define STACKLEVEL __builtin_frame_address (0) |
|
|
80 | #else |
|
|
81 | # define dSTACKLEVEL volatile void *stacklevel |
|
|
82 | # define STACKLEVEL ((void *)&stacklevel) |
|
|
83 | #endif |
|
|
84 | |
|
|
85 | #define IN_DESTRUCT PL_dirty |
|
|
86 | |
|
|
87 | #if __GNUC__ >= 3 |
|
|
88 | # define attribute(x) __attribute__(x) |
|
|
89 | # define expect(expr,value) __builtin_expect ((expr), (value)) |
|
|
90 | # define INLINE static inline |
|
|
91 | #else |
|
|
92 | # define attribute(x) |
|
|
93 | # define expect(expr,value) (expr) |
|
|
94 | # define INLINE static |
|
|
95 | #endif |
|
|
96 | |
|
|
97 | #define expect_false(expr) expect ((expr) != 0, 0) |
|
|
98 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
|
99 | |
|
|
100 | #define NOINLINE attribute ((noinline)) |
|
|
101 | |
|
|
102 | #include "CoroAPI.h" |
|
|
103 | #define GCoroAPI (&coroapi) /* very sneaky */ |
|
|
104 | |
|
|
105 | #ifdef USE_ITHREADS |
|
|
106 | # if CORO_PTHREAD |
|
|
107 | static void *coro_thx; |
59 | # endif |
108 | # endif |
60 | #endif |
109 | #endif |
61 | |
110 | |
62 | #define SUB_INIT "Coro::State::initialize" |
111 | #ifdef __linux |
63 | #define UCORO_STATE "_coro_state" |
112 | # include <time.h> /* for timespec */ |
64 | |
113 | # include <syscall.h> /* for SYS_* */ |
65 | /* The next macro should declare a variable stacklevel that contains and approximation |
114 | # ifdef SYS_clock_gettime |
66 | * to the current C stack pointer. Its property is that it changes with each call |
115 | # define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
67 | * and should be unique. */ |
116 | # define CORO_CLOCK_MONOTONIC 1 |
68 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
117 | # define CORO_CLOCK_THREAD_CPUTIME_ID 3 |
69 | |
118 | # endif |
70 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
|
|
71 | |
|
|
72 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
|
|
73 | |
|
|
74 | #include "CoroAPI.h" |
|
|
75 | |
|
|
76 | #ifdef USE_ITHREADS |
|
|
77 | static perl_mutex coro_mutex; |
|
|
78 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
|
|
79 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
|
|
80 | #else |
|
|
81 | # define LOCK (void)0 |
|
|
82 | # define UNLOCK (void)0 |
|
|
83 | #endif |
119 | #endif |
84 | |
120 | |
|
|
121 | static double (*nvtime)(); /* so why doesn't it take void? */ |
|
|
122 | static void (*u2time)(pTHX_ UV ret[2]); |
|
|
123 | |
|
|
124 | /* we hijack an hopefully unused CV flag for our purposes */ |
|
|
125 | #define CVf_SLF 0x4000 |
|
|
126 | static OP *pp_slf (pTHX); |
|
|
127 | |
|
|
128 | static U32 cctx_gen; |
|
|
129 | static size_t cctx_stacksize = CORO_STACKSIZE; |
85 | static struct CoroAPI coroapi; |
130 | static struct CoroAPI coroapi; |
86 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
131 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
|
|
132 | static JMPENV *main_top_env; |
87 | static HV *coro_state_stash; |
133 | static HV *coro_state_stash, *coro_stash; |
88 | static SV *ucoro_state_sv; |
|
|
89 | static U32 ucoro_state_hash; |
|
|
90 | static SV *coro_mortal; /* will be freed after next transfer */ |
134 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
91 | |
135 | |
92 | /* this is actually not only the c stack but also c registers etc... */ |
136 | static AV *av_destroy; /* destruction queue */ |
|
|
137 | static SV *sv_manager; /* the manager coro */ |
|
|
138 | static SV *sv_idle; /* $Coro::idle */ |
|
|
139 | |
|
|
140 | static GV *irsgv; /* $/ */ |
|
|
141 | static GV *stdoutgv; /* *STDOUT */ |
|
|
142 | static SV *rv_diehook; |
|
|
143 | static SV *rv_warnhook; |
|
|
144 | static HV *hv_sig; /* %SIG */ |
|
|
145 | |
|
|
146 | /* async_pool helper stuff */ |
|
|
147 | static SV *sv_pool_rss; |
|
|
148 | static SV *sv_pool_size; |
|
|
149 | static SV *sv_async_pool_idle; /* description string */ |
|
|
150 | static AV *av_async_pool; /* idle pool */ |
|
|
151 | static SV *sv_Coro; /* class string */ |
|
|
152 | static CV *cv_pool_handler; |
|
|
153 | |
|
|
154 | /* Coro::AnyEvent */ |
|
|
155 | static SV *sv_activity; |
|
|
156 | |
|
|
157 | /* enable processtime/realtime profiling */ |
|
|
158 | static char enable_times; |
|
|
159 | typedef U32 coro_ts[2]; |
|
|
160 | static coro_ts time_real, time_cpu; |
|
|
161 | static char times_valid; |
|
|
162 | |
|
|
163 | static struct coro_cctx *cctx_first; |
|
|
164 | static int cctx_count, cctx_idle; |
|
|
165 | |
|
|
166 | enum { |
|
|
167 | CC_MAPPED = 0x01, |
|
|
168 | CC_NOREUSE = 0x02, /* throw this away after tracing */ |
|
|
169 | CC_TRACE = 0x04, |
|
|
170 | CC_TRACE_SUB = 0x08, /* trace sub calls */ |
|
|
171 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
|
|
172 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
|
|
173 | }; |
|
|
174 | |
|
|
175 | /* this is a structure representing a c-level coroutine */ |
93 | typedef struct { |
176 | typedef struct coro_cctx |
94 | int refcnt; /* pointer reference counter */ |
177 | { |
95 | int usecnt; /* shared by how many coroutines */ |
178 | struct coro_cctx *next; |
96 | int gencnt; /* generation counter */ |
|
|
97 | |
179 | |
|
|
180 | /* the stack */ |
|
|
181 | void *sptr; |
|
|
182 | size_t ssize; |
|
|
183 | |
|
|
184 | /* cpu state */ |
|
|
185 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
|
|
186 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
|
|
187 | JMPENV *top_env; |
98 | coro_context cctx; |
188 | coro_context cctx; |
99 | |
189 | |
100 | void *sptr; |
190 | U32 gen; |
101 | long ssize; /* positive == mmap, otherwise malloc */ |
191 | #if CORO_USE_VALGRIND |
102 | } coro_stack; |
192 | int valgrind_id; |
|
|
193 | #endif |
|
|
194 | unsigned char flags; |
|
|
195 | } coro_cctx; |
103 | |
196 | |
|
|
197 | coro_cctx *cctx_current; /* the currently running cctx */ |
|
|
198 | |
|
|
199 | /*****************************************************************************/ |
|
|
200 | |
|
|
201 | enum { |
|
|
202 | CF_RUNNING = 0x0001, /* coroutine is running */ |
|
|
203 | CF_READY = 0x0002, /* coroutine is ready */ |
|
|
204 | CF_NEW = 0x0004, /* has never been switched to */ |
|
|
205 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
|
|
206 | CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */ |
|
|
207 | }; |
|
|
208 | |
|
|
209 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
|
|
210 | typedef struct |
|
|
211 | { |
|
|
212 | SV *defsv; |
|
|
213 | AV *defav; |
|
|
214 | SV *errsv; |
|
|
215 | SV *irsgv; |
|
|
216 | HV *hinthv; |
|
|
217 | #define VAR(name,type) type name; |
|
|
218 | # include "state.h" |
|
|
219 | #undef VAR |
|
|
220 | } perl_slots; |
|
|
221 | |
|
|
222 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
|
|
223 | |
|
|
224 | /* this is a structure representing a perl-level coroutine */ |
104 | struct coro { |
225 | struct coro { |
105 | /* the optional C context */ |
226 | /* the C coroutine allocated to this perl coroutine, if any */ |
106 | coro_stack *stack; |
227 | coro_cctx *cctx; |
107 | void *cursp; |
|
|
108 | int gencnt; |
|
|
109 | |
228 | |
110 | /* optionally saved, might be zero */ |
229 | /* ready queue */ |
111 | AV *defav; |
230 | struct coro *next_ready; |
112 | SV *defsv; |
|
|
113 | SV *errsv; |
|
|
114 | |
|
|
115 | /* saved global state not related to stacks */ |
|
|
116 | U8 dowarn; |
|
|
117 | I32 in_eval; |
|
|
118 | |
231 | |
119 | /* the stacks and related info (callchain etc..) */ |
232 | /* state data */ |
120 | PERL_SI *curstackinfo; |
233 | struct CoroSLF slf_frame; /* saved slf frame */ |
121 | AV *curstack; |
|
|
122 | AV *mainstack; |
234 | AV *mainstack; |
123 | SV **stack_sp; |
235 | perl_slots *slot; /* basically the saved sp */ |
124 | OP *op; |
236 | |
125 | SV **curpad; |
237 | CV *startcv; /* the CV to execute */ |
126 | AV *comppad; |
238 | AV *args; /* data associated with this coroutine (initial args) */ |
127 | CV *compcv; |
239 | int refcnt; /* coroutines are refcounted, yes */ |
128 | SV **stack_base; |
240 | int flags; /* CF_ flags */ |
129 | SV **stack_max; |
241 | HV *hv; /* the perl hash associated with this coro, if any */ |
130 | SV **tmps_stack; |
242 | void (*on_destroy)(pTHX_ struct coro *coro); |
131 | I32 tmps_floor; |
243 | |
132 | I32 tmps_ix; |
244 | /* statistics */ |
133 | I32 tmps_max; |
245 | int usecount; /* number of transfers to this coro */ |
134 | I32 *markstack; |
|
|
135 | I32 *markstack_ptr; |
|
|
136 | I32 *markstack_max; |
|
|
137 | I32 *scopestack; |
|
|
138 | I32 scopestack_ix; |
|
|
139 | I32 scopestack_max; |
|
|
140 | ANY *savestack; |
|
|
141 | I32 savestack_ix; |
|
|
142 | I32 savestack_max; |
|
|
143 | OP **retstack; |
|
|
144 | I32 retstack_ix; |
|
|
145 | I32 retstack_max; |
|
|
146 | PMOP *curpm; |
|
|
147 | COP *curcop; |
|
|
148 | JMPENV *top_env; |
|
|
149 | |
246 | |
150 | /* coro process data */ |
247 | /* coro process data */ |
151 | int prio; |
248 | int prio; |
|
|
249 | SV *except; /* exception to be thrown */ |
|
|
250 | SV *rouse_cb; |
152 | |
251 | |
153 | /* data associated with this coroutine (initial args) */ |
252 | /* async_pool */ |
154 | AV *args; |
253 | SV *saved_deffh; |
155 | int refcnt; |
254 | SV *invoke_cb; |
|
|
255 | AV *invoke_av; |
|
|
256 | |
|
|
257 | /* on_enter/on_leave */ |
|
|
258 | AV *on_enter; |
|
|
259 | AV *on_leave; |
|
|
260 | |
|
|
261 | /* swap_sv */ |
|
|
262 | AV *swap_sv; |
|
|
263 | |
|
|
264 | /* times */ |
|
|
265 | coro_ts t_cpu, t_real; |
|
|
266 | |
|
|
267 | /* linked list */ |
|
|
268 | struct coro *next, *prev; |
156 | }; |
269 | }; |
157 | |
270 | |
158 | typedef struct coro *Coro__State; |
271 | typedef struct coro *Coro__State; |
159 | typedef struct coro *Coro__State_or_hashref; |
272 | typedef struct coro *Coro__State_or_hashref; |
160 | |
273 | |
|
|
274 | /* the following variables are effectively part of the perl context */ |
|
|
275 | /* and get copied between struct coro and these variables */ |
|
|
276 | /* the mainr easonw e don't support windows process emulation */ |
|
|
277 | static struct CoroSLF slf_frame; /* the current slf frame */ |
|
|
278 | |
|
|
279 | /** Coro ********************************************************************/ |
|
|
280 | |
|
|
281 | #define CORO_PRIO_MAX 3 |
|
|
282 | #define CORO_PRIO_HIGH 1 |
|
|
283 | #define CORO_PRIO_NORMAL 0 |
|
|
284 | #define CORO_PRIO_LOW -1 |
|
|
285 | #define CORO_PRIO_IDLE -3 |
|
|
286 | #define CORO_PRIO_MIN -4 |
|
|
287 | |
|
|
288 | /* for Coro.pm */ |
|
|
289 | static SV *coro_current; |
|
|
290 | static SV *coro_readyhook; |
|
|
291 | static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */ |
|
|
292 | static CV *cv_coro_run, *cv_coro_terminate; |
|
|
293 | static struct coro *coro_first; |
|
|
294 | #define coro_nready coroapi.nready |
|
|
295 | |
|
|
296 | /** Coro::Select ************************************************************/ |
|
|
297 | |
|
|
298 | static OP *(*coro_old_pp_sselect) (pTHX); |
|
|
299 | static SV *coro_select_select; |
|
|
300 | |
|
|
301 | /* horrible hack, but if it works... */ |
|
|
302 | static OP * |
|
|
303 | coro_pp_sselect (pTHX) |
|
|
304 | { |
|
|
305 | dSP; |
|
|
306 | PUSHMARK (SP - 4); /* fake argument list */ |
|
|
307 | XPUSHs (coro_select_select); |
|
|
308 | PUTBACK; |
|
|
309 | |
|
|
310 | /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */ |
|
|
311 | PL_op->op_flags |= OPf_STACKED; |
|
|
312 | PL_op->op_private = 0; |
|
|
313 | return PL_ppaddr [OP_ENTERSUB](aTHX); |
|
|
314 | } |
|
|
315 | |
|
|
316 | /** lowlevel stuff **********************************************************/ |
|
|
317 | |
|
|
318 | static SV * |
|
|
319 | coro_get_sv (pTHX_ const char *name, int create) |
|
|
320 | { |
|
|
321 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
322 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
|
|
323 | get_sv (name, create); |
|
|
324 | #endif |
|
|
325 | return get_sv (name, create); |
|
|
326 | } |
|
|
327 | |
161 | static AV * |
328 | static AV * |
|
|
329 | coro_get_av (pTHX_ const char *name, int create) |
|
|
330 | { |
|
|
331 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
332 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
|
|
333 | get_av (name, create); |
|
|
334 | #endif |
|
|
335 | return get_av (name, create); |
|
|
336 | } |
|
|
337 | |
|
|
338 | static HV * |
|
|
339 | coro_get_hv (pTHX_ const char *name, int create) |
|
|
340 | { |
|
|
341 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
342 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
|
|
343 | get_hv (name, create); |
|
|
344 | #endif |
|
|
345 | return get_hv (name, create); |
|
|
346 | } |
|
|
347 | |
|
|
348 | INLINE void |
|
|
349 | coro_times_update () |
|
|
350 | { |
|
|
351 | #ifdef coro_clock_gettime |
|
|
352 | struct timespec ts; |
|
|
353 | |
|
|
354 | ts.tv_sec = ts.tv_nsec = 0; |
|
|
355 | coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts); |
|
|
356 | time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec; |
|
|
357 | |
|
|
358 | ts.tv_sec = ts.tv_nsec = 0; |
|
|
359 | coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts); |
|
|
360 | time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec; |
|
|
361 | #else |
|
|
362 | dTHX; |
|
|
363 | UV tv[2]; |
|
|
364 | |
|
|
365 | u2time (aTHX_ tv); |
|
|
366 | time_real [0] = tv [0]; |
|
|
367 | time_real [1] = tv [1] * 1000; |
|
|
368 | #endif |
|
|
369 | } |
|
|
370 | |
|
|
371 | INLINE void |
|
|
372 | coro_times_add (struct coro *c) |
|
|
373 | { |
|
|
374 | c->t_real [1] += time_real [1]; |
|
|
375 | if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; } |
|
|
376 | c->t_real [0] += time_real [0]; |
|
|
377 | |
|
|
378 | c->t_cpu [1] += time_cpu [1]; |
|
|
379 | if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; } |
|
|
380 | c->t_cpu [0] += time_cpu [0]; |
|
|
381 | } |
|
|
382 | |
|
|
383 | INLINE void |
|
|
384 | coro_times_sub (struct coro *c) |
|
|
385 | { |
|
|
386 | if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; } |
|
|
387 | c->t_real [1] -= time_real [1]; |
|
|
388 | c->t_real [0] -= time_real [0]; |
|
|
389 | |
|
|
390 | if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; } |
|
|
391 | c->t_cpu [1] -= time_cpu [1]; |
|
|
392 | c->t_cpu [0] -= time_cpu [0]; |
|
|
393 | } |
|
|
394 | |
|
|
395 | /*****************************************************************************/ |
|
|
396 | /* magic glue */ |
|
|
397 | |
|
|
398 | #define CORO_MAGIC_type_cv 26 |
|
|
399 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
|
|
400 | |
|
|
401 | #define CORO_MAGIC_NN(sv, type) \ |
|
|
402 | (expect_true (SvMAGIC (sv)->mg_type == type) \ |
|
|
403 | ? SvMAGIC (sv) \ |
|
|
404 | : mg_find (sv, type)) |
|
|
405 | |
|
|
406 | #define CORO_MAGIC(sv, type) \ |
|
|
407 | (expect_true (SvMAGIC (sv)) \ |
|
|
408 | ? CORO_MAGIC_NN (sv, type) \ |
|
|
409 | : 0) |
|
|
410 | |
|
|
411 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
|
|
412 | #define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) |
|
|
413 | |
|
|
414 | INLINE struct coro * |
|
|
415 | SvSTATE_ (pTHX_ SV *coro) |
|
|
416 | { |
|
|
417 | HV *stash; |
|
|
418 | MAGIC *mg; |
|
|
419 | |
|
|
420 | if (SvROK (coro)) |
|
|
421 | coro = SvRV (coro); |
|
|
422 | |
|
|
423 | if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
|
|
424 | croak ("Coro::State object required"); |
|
|
425 | |
|
|
426 | stash = SvSTASH (coro); |
|
|
427 | if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
|
|
428 | { |
|
|
429 | /* very slow, but rare, check */ |
|
|
430 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
431 | croak ("Coro::State object required"); |
|
|
432 | } |
|
|
433 | |
|
|
434 | mg = CORO_MAGIC_state (coro); |
|
|
435 | return (struct coro *)mg->mg_ptr; |
|
|
436 | } |
|
|
437 | |
|
|
438 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
|
|
439 | |
|
|
440 | /* faster than SvSTATE, but expects a coroutine hv */ |
|
|
441 | #define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr) |
|
|
442 | #define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
|
|
443 | |
|
|
444 | /*****************************************************************************/ |
|
|
445 | /* padlist management and caching */ |
|
|
446 | |
|
|
447 | static AV * |
162 | coro_clone_padlist (pTHX_ CV *cv) |
448 | coro_derive_padlist (pTHX_ CV *cv) |
163 | { |
449 | { |
164 | AV *padlist = CvPADLIST (cv); |
450 | AV *padlist = CvPADLIST (cv); |
165 | AV *newpadlist, *newpad; |
451 | AV *newpadlist, *newpad; |
166 | |
452 | |
167 | newpadlist = newAV (); |
453 | newpadlist = newAV (); |
168 | AvREAL_off (newpadlist); |
454 | AvREAL_off (newpadlist); |
169 | #if PERL_VERSION < 9 |
455 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
456 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
|
|
457 | #else |
170 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
458 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
171 | #else |
|
|
172 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
|
|
173 | #endif |
459 | #endif |
174 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
460 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
175 | --AvFILLp (padlist); |
461 | --AvFILLp (padlist); |
176 | |
462 | |
177 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
463 | av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0])); |
178 | av_store (newpadlist, 1, (SV *)newpad); |
464 | av_store (newpadlist, 1, (SV *)newpad); |
179 | |
465 | |
180 | return newpadlist; |
466 | return newpadlist; |
181 | } |
467 | } |
182 | |
468 | |
183 | static void |
469 | static void |
184 | free_padlist (pTHX_ AV *padlist) |
470 | free_padlist (pTHX_ AV *padlist) |
185 | { |
471 | { |
186 | /* may be during global destruction */ |
472 | /* may be during global destruction */ |
187 | if (SvREFCNT (padlist)) |
473 | if (!IN_DESTRUCT) |
188 | { |
474 | { |
189 | I32 i = AvFILLp (padlist); |
475 | I32 i = AvFILLp (padlist); |
190 | while (i >= 0) |
476 | |
|
|
477 | while (i > 0) /* special-case index 0 */ |
191 | { |
478 | { |
192 | SV **svp = av_fetch (padlist, i--, FALSE); |
479 | /* we try to be extra-careful here */ |
193 | if (svp) |
480 | AV *av = (AV *)AvARRAY (padlist)[i--]; |
194 | { |
481 | I32 j = AvFILLp (av); |
195 | SV *sv; |
482 | |
196 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
483 | while (j >= 0) |
|
|
484 | SvREFCNT_dec (AvARRAY (av)[j--]); |
|
|
485 | |
|
|
486 | AvFILLp (av) = -1; |
197 | SvREFCNT_dec (sv); |
487 | SvREFCNT_dec (av); |
198 | |
|
|
199 | SvREFCNT_dec (*svp); |
|
|
200 | } |
|
|
201 | } |
488 | } |
202 | |
489 | |
|
|
490 | SvREFCNT_dec (AvARRAY (padlist)[0]); |
|
|
491 | |
|
|
492 | AvFILLp (padlist) = -1; |
203 | SvREFCNT_dec ((SV*)padlist); |
493 | SvREFCNT_dec ((SV*)padlist); |
204 | } |
494 | } |
205 | } |
495 | } |
206 | |
496 | |
207 | static int |
497 | static int |
208 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
498 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
209 | { |
499 | { |
210 | AV *padlist; |
500 | AV *padlist; |
211 | AV *av = (AV *)mg->mg_obj; |
501 | AV *av = (AV *)mg->mg_obj; |
|
|
502 | |
|
|
503 | /* perl manages to free our internal AV and _then_ call us */ |
|
|
504 | if (IN_DESTRUCT) |
|
|
505 | return 0; |
212 | |
506 | |
213 | /* casting is fun. */ |
507 | /* casting is fun. */ |
214 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
508 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
215 | free_padlist (aTHX_ padlist); |
509 | free_padlist (aTHX_ padlist); |
216 | |
510 | |
217 | SvREFCNT_dec (av); |
511 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
218 | |
512 | |
219 | return 0; |
513 | return 0; |
220 | } |
514 | } |
221 | |
515 | |
222 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
516 | static MGVTBL coro_cv_vtbl = { |
223 | |
517 | 0, 0, 0, 0, |
224 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
518 | coro_cv_free |
|
|
519 | }; |
225 | |
520 | |
226 | /* the next two functions merely cache the padlists */ |
521 | /* the next two functions merely cache the padlists */ |
227 | static void |
522 | static void |
228 | get_padlist (pTHX_ CV *cv) |
523 | get_padlist (pTHX_ CV *cv) |
229 | { |
524 | { |
230 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
525 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
526 | AV *av; |
231 | |
527 | |
232 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
528 | if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
233 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
529 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
234 | else |
530 | else |
235 | { |
531 | { |
236 | #if 0 |
532 | #if CORO_PREFER_PERL_FUNCTIONS |
237 | /* this should work - but it doesn't :( */ |
533 | /* this is probably cleaner? but also slower! */ |
|
|
534 | /* in practise, it seems to be less stable */ |
238 | CV *cp = Perl_cv_clone (aTHX_ cv); |
535 | CV *cp = Perl_cv_clone (aTHX_ cv); |
239 | CvPADLIST (cv) = CvPADLIST (cp); |
536 | CvPADLIST (cv) = CvPADLIST (cp); |
240 | CvPADLIST (cp) = 0; |
537 | CvPADLIST (cp) = 0; |
241 | SvREFCNT_dec (cp); |
538 | SvREFCNT_dec (cp); |
242 | #else |
539 | #else |
243 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
540 | CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); |
244 | #endif |
541 | #endif |
245 | } |
542 | } |
246 | } |
543 | } |
247 | |
544 | |
248 | static void |
545 | static void |
249 | put_padlist (pTHX_ CV *cv) |
546 | put_padlist (pTHX_ CV *cv) |
250 | { |
547 | { |
251 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
548 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
549 | AV *av; |
252 | |
550 | |
253 | if (!mg) |
551 | if (expect_false (!mg)) |
|
|
552 | mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
|
|
553 | |
|
|
554 | av = (AV *)mg->mg_obj; |
|
|
555 | |
|
|
556 | if (expect_false (AvFILLp (av) >= AvMAX (av))) |
|
|
557 | av_extend (av, AvFILLp (av) + 1); |
|
|
558 | |
|
|
559 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
|
|
560 | } |
|
|
561 | |
|
|
562 | /** load & save, init *******************************************************/ |
|
|
563 | |
|
|
564 | /* swap sv heads, at least logically */ |
|
|
565 | static void |
|
|
566 | swap_svs (pTHX_ Coro__State c) |
|
|
567 | { |
|
|
568 | int i; |
|
|
569 | |
|
|
570 | for (i = 0; i <= AvFILLp (c->swap_sv); ) |
|
|
571 | { |
|
|
572 | SV *a = AvARRAY (c->swap_sv)[i++]; |
|
|
573 | SV *b = AvARRAY (c->swap_sv)[i++]; |
|
|
574 | |
|
|
575 | const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */ |
|
|
576 | SV tmp; |
|
|
577 | |
|
|
578 | /* swap sv_any */ |
|
|
579 | SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp); |
|
|
580 | |
|
|
581 | /* swap sv_flags */ |
|
|
582 | SvFLAGS (&tmp) = SvFLAGS (a); |
|
|
583 | SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep); |
|
|
584 | SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep); |
|
|
585 | |
|
|
586 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
587 | /* perl 5.10 complicates this _quite_ a bit, but it also is |
|
|
588 | * is much faster, so no quarrels here. alternatively, we could |
|
|
589 | * sv_upgrade to avoid this. |
|
|
590 | */ |
254 | { |
591 | { |
255 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
592 | /* swap sv_u */ |
256 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
593 | tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u; |
257 | mg->mg_virtual = &vtbl_coro; |
594 | |
258 | mg->mg_obj = (SV *)newAV (); |
595 | /* if SvANY points to the head, we need to adjust the pointers, |
|
|
596 | * as the pointer for a still points to b, and maybe vice versa. |
|
|
597 | */ |
|
|
598 | #define svany_in_head(type) \ |
|
|
599 | (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type))) |
|
|
600 | |
|
|
601 | if (svany_in_head (SvTYPE (a))) |
|
|
602 | SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a); |
|
|
603 | |
|
|
604 | if (svany_in_head (SvTYPE (b))) |
|
|
605 | SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b); |
259 | } |
606 | } |
260 | |
607 | #endif |
261 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
608 | } |
262 | } |
609 | } |
263 | |
610 | |
264 | #define SB do { |
611 | #define SWAP_SVS(coro) \ |
265 | #define SE } while (0) |
612 | if (expect_false ((coro)->swap_sv)) \ |
|
|
613 | swap_svs (aTHX_ (coro)) |
266 | |
614 | |
267 | #define LOAD(state) load_state(aTHX_ (state)); |
|
|
268 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
|
|
269 | |
|
|
270 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
|
|
271 | |
|
|
272 | static void |
615 | static void |
|
|
616 | on_enterleave_call (pTHX_ SV *cb); |
|
|
617 | |
|
|
618 | static void |
273 | load_state(pTHX_ Coro__State c) |
619 | load_perl (pTHX_ Coro__State c) |
274 | { |
620 | { |
275 | PL_dowarn = c->dowarn; |
621 | perl_slots *slot = c->slot; |
276 | PL_in_eval = c->in_eval; |
622 | c->slot = 0; |
277 | |
623 | |
278 | PL_curstackinfo = c->curstackinfo; |
|
|
279 | PL_curstack = c->curstack; |
|
|
280 | PL_mainstack = c->mainstack; |
624 | PL_mainstack = c->mainstack; |
281 | PL_stack_sp = c->stack_sp; |
|
|
282 | PL_op = c->op; |
|
|
283 | PL_curpad = c->curpad; |
|
|
284 | PL_comppad = c->comppad; |
|
|
285 | PL_compcv = c->compcv; |
|
|
286 | PL_stack_base = c->stack_base; |
|
|
287 | PL_stack_max = c->stack_max; |
|
|
288 | PL_tmps_stack = c->tmps_stack; |
|
|
289 | PL_tmps_floor = c->tmps_floor; |
|
|
290 | PL_tmps_ix = c->tmps_ix; |
|
|
291 | PL_tmps_max = c->tmps_max; |
|
|
292 | PL_markstack = c->markstack; |
|
|
293 | PL_markstack_ptr = c->markstack_ptr; |
|
|
294 | PL_markstack_max = c->markstack_max; |
|
|
295 | PL_scopestack = c->scopestack; |
|
|
296 | PL_scopestack_ix = c->scopestack_ix; |
|
|
297 | PL_scopestack_max = c->scopestack_max; |
|
|
298 | PL_savestack = c->savestack; |
|
|
299 | PL_savestack_ix = c->savestack_ix; |
|
|
300 | PL_savestack_max = c->savestack_max; |
|
|
301 | #if PERL_VERSION < 9 |
|
|
302 | PL_retstack = c->retstack; |
|
|
303 | PL_retstack_ix = c->retstack_ix; |
|
|
304 | PL_retstack_max = c->retstack_max; |
|
|
305 | #endif |
|
|
306 | PL_curpm = c->curpm; |
|
|
307 | PL_curcop = c->curcop; |
|
|
308 | PL_top_env = c->top_env; |
|
|
309 | |
625 | |
310 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
626 | GvSV (PL_defgv) = slot->defsv; |
311 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
627 | GvAV (PL_defgv) = slot->defav; |
312 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
628 | GvSV (PL_errgv) = slot->errsv; |
|
|
629 | GvSV (irsgv) = slot->irsgv; |
|
|
630 | GvHV (PL_hintgv) = slot->hinthv; |
|
|
631 | |
|
|
632 | #define VAR(name,type) PL_ ## name = slot->name; |
|
|
633 | # include "state.h" |
|
|
634 | #undef VAR |
313 | |
635 | |
314 | { |
636 | { |
315 | dSP; |
637 | dSP; |
|
|
638 | |
316 | CV *cv; |
639 | CV *cv; |
317 | |
640 | |
318 | /* now do the ugly restore mess */ |
641 | /* now do the ugly restore mess */ |
319 | while ((cv = (CV *)POPs)) |
642 | while (expect_true (cv = (CV *)POPs)) |
320 | { |
643 | { |
321 | AV *padlist = (AV *)POPs; |
|
|
322 | |
|
|
323 | if (padlist) |
|
|
324 | { |
|
|
325 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
644 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
326 | CvPADLIST(cv) = padlist; |
645 | CvDEPTH (cv) = PTR2IV (POPs); |
327 | } |
646 | CvPADLIST (cv) = (AV *)POPs; |
328 | |
|
|
329 | ++CvDEPTH(cv); |
|
|
330 | } |
647 | } |
331 | |
648 | |
332 | PUTBACK; |
649 | PUTBACK; |
333 | } |
650 | } |
334 | } |
|
|
335 | |
651 | |
|
|
652 | slf_frame = c->slf_frame; |
|
|
653 | CORO_THROW = c->except; |
|
|
654 | |
|
|
655 | if (expect_false (enable_times)) |
|
|
656 | { |
|
|
657 | if (expect_false (!times_valid)) |
|
|
658 | coro_times_update (); |
|
|
659 | |
|
|
660 | coro_times_sub (c); |
|
|
661 | } |
|
|
662 | |
|
|
663 | if (expect_false (c->on_enter)) |
|
|
664 | { |
|
|
665 | int i; |
|
|
666 | |
|
|
667 | for (i = 0; i <= AvFILLp (c->on_enter); ++i) |
|
|
668 | on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]); |
|
|
669 | } |
|
|
670 | |
|
|
671 | SWAP_SVS (c); |
|
|
672 | } |
|
|
673 | |
336 | static void |
674 | static void |
337 | save_state(pTHX_ Coro__State c, int flags) |
675 | save_perl (pTHX_ Coro__State c) |
338 | { |
676 | { |
|
|
677 | SWAP_SVS (c); |
|
|
678 | |
|
|
679 | if (expect_false (c->on_leave)) |
|
|
680 | { |
|
|
681 | int i; |
|
|
682 | |
|
|
683 | for (i = AvFILLp (c->on_leave); i >= 0; --i) |
|
|
684 | on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]); |
|
|
685 | } |
|
|
686 | |
|
|
687 | times_valid = 0; |
|
|
688 | |
|
|
689 | if (expect_false (enable_times)) |
|
|
690 | { |
|
|
691 | coro_times_update (); times_valid = 1; |
|
|
692 | coro_times_add (c); |
|
|
693 | } |
|
|
694 | |
|
|
695 | c->except = CORO_THROW; |
|
|
696 | c->slf_frame = slf_frame; |
|
|
697 | |
339 | { |
698 | { |
340 | dSP; |
699 | dSP; |
341 | I32 cxix = cxstack_ix; |
700 | I32 cxix = cxstack_ix; |
342 | PERL_CONTEXT *ccstk = cxstack; |
701 | PERL_CONTEXT *ccstk = cxstack; |
343 | PERL_SI *top_si = PL_curstackinfo; |
702 | PERL_SI *top_si = PL_curstackinfo; |
… | |
… | |
345 | /* |
704 | /* |
346 | * the worst thing you can imagine happens first - we have to save |
705 | * the worst thing you can imagine happens first - we have to save |
347 | * (and reinitialize) all cv's in the whole callchain :( |
706 | * (and reinitialize) all cv's in the whole callchain :( |
348 | */ |
707 | */ |
349 | |
708 | |
350 | PUSHs (Nullsv); |
709 | XPUSHs (Nullsv); |
351 | /* this loop was inspired by pp_caller */ |
710 | /* this loop was inspired by pp_caller */ |
352 | for (;;) |
711 | for (;;) |
353 | { |
712 | { |
354 | while (cxix >= 0) |
713 | while (expect_true (cxix >= 0)) |
355 | { |
714 | { |
356 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
715 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
357 | |
716 | |
358 | if (CxTYPE(cx) == CXt_SUB) |
717 | if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT)) |
359 | { |
718 | { |
360 | CV *cv = cx->blk_sub.cv; |
719 | CV *cv = cx->blk_sub.cv; |
|
|
720 | |
361 | if (CvDEPTH(cv)) |
721 | if (expect_true (CvDEPTH (cv))) |
362 | { |
722 | { |
363 | EXTEND (SP, CvDEPTH(cv)*2); |
723 | EXTEND (SP, 3); |
364 | |
|
|
365 | while (--CvDEPTH(cv)) |
|
|
366 | { |
|
|
367 | /* this tells the restore code to increment CvDEPTH */ |
|
|
368 | PUSHs (Nullsv); |
|
|
369 | PUSHs ((SV *)cv); |
|
|
370 | } |
|
|
371 | |
|
|
372 | PUSHs ((SV *)CvPADLIST(cv)); |
724 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
725 | PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
373 | PUSHs ((SV *)cv); |
726 | PUSHs ((SV *)cv); |
374 | |
727 | |
|
|
728 | CvDEPTH (cv) = 0; |
375 | get_padlist (aTHX_ cv); |
729 | get_padlist (aTHX_ cv); |
376 | } |
730 | } |
377 | } |
731 | } |
378 | #ifdef CXt_FORMAT |
|
|
379 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
380 | { |
|
|
381 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
382 | /* my bold guess is as a simple, plain sub... */ |
|
|
383 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
384 | } |
|
|
385 | #endif |
|
|
386 | } |
732 | } |
387 | |
733 | |
388 | if (top_si->si_type == PERLSI_MAIN) |
734 | if (expect_true (top_si->si_type == PERLSI_MAIN)) |
389 | break; |
735 | break; |
390 | |
736 | |
391 | top_si = top_si->si_prev; |
737 | top_si = top_si->si_prev; |
392 | ccstk = top_si->si_cxstack; |
738 | ccstk = top_si->si_cxstack; |
393 | cxix = top_si->si_cxix; |
739 | cxix = top_si->si_cxix; |
394 | } |
740 | } |
395 | |
741 | |
396 | PUTBACK; |
742 | PUTBACK; |
397 | } |
743 | } |
398 | |
744 | |
399 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
745 | /* allocate some space on the context stack for our purposes */ |
400 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
746 | /* we manually unroll here, as usually 2 slots is enough */ |
401 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
747 | if (SLOT_COUNT >= 1) CXINC; |
|
|
748 | if (SLOT_COUNT >= 2) CXINC; |
|
|
749 | if (SLOT_COUNT >= 3) CXINC; |
|
|
750 | { |
|
|
751 | unsigned int i; |
|
|
752 | for (i = 3; i < SLOT_COUNT; ++i) |
|
|
753 | CXINC; |
|
|
754 | } |
|
|
755 | cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
402 | |
756 | |
403 | c->dowarn = PL_dowarn; |
|
|
404 | c->in_eval = PL_in_eval; |
|
|
405 | |
|
|
406 | c->curstackinfo = PL_curstackinfo; |
|
|
407 | c->curstack = PL_curstack; |
|
|
408 | c->mainstack = PL_mainstack; |
757 | c->mainstack = PL_mainstack; |
409 | c->stack_sp = PL_stack_sp; |
758 | |
410 | c->op = PL_op; |
759 | { |
411 | c->curpad = PL_curpad; |
760 | perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
412 | c->comppad = PL_comppad; |
761 | |
413 | c->compcv = PL_compcv; |
762 | slot->defav = GvAV (PL_defgv); |
414 | c->stack_base = PL_stack_base; |
763 | slot->defsv = DEFSV; |
415 | c->stack_max = PL_stack_max; |
764 | slot->errsv = ERRSV; |
416 | c->tmps_stack = PL_tmps_stack; |
765 | slot->irsgv = GvSV (irsgv); |
417 | c->tmps_floor = PL_tmps_floor; |
766 | slot->hinthv = GvHV (PL_hintgv); |
418 | c->tmps_ix = PL_tmps_ix; |
767 | |
419 | c->tmps_max = PL_tmps_max; |
768 | #define VAR(name,type) slot->name = PL_ ## name; |
420 | c->markstack = PL_markstack; |
769 | # include "state.h" |
421 | c->markstack_ptr = PL_markstack_ptr; |
770 | #undef VAR |
422 | c->markstack_max = PL_markstack_max; |
771 | } |
423 | c->scopestack = PL_scopestack; |
|
|
424 | c->scopestack_ix = PL_scopestack_ix; |
|
|
425 | c->scopestack_max = PL_scopestack_max; |
|
|
426 | c->savestack = PL_savestack; |
|
|
427 | c->savestack_ix = PL_savestack_ix; |
|
|
428 | c->savestack_max = PL_savestack_max; |
|
|
429 | #if PERL_VERSION < 9 |
|
|
430 | c->retstack = PL_retstack; |
|
|
431 | c->retstack_ix = PL_retstack_ix; |
|
|
432 | c->retstack_max = PL_retstack_max; |
|
|
433 | #endif |
|
|
434 | c->curpm = PL_curpm; |
|
|
435 | c->curcop = PL_curcop; |
|
|
436 | c->top_env = PL_top_env; |
|
|
437 | } |
772 | } |
438 | |
773 | |
439 | /* |
774 | /* |
440 | * allocate various perl stacks. This is an exact copy |
775 | * allocate various perl stacks. This is almost an exact copy |
441 | * of perl.c:init_stacks, except that it uses less memory |
776 | * of perl.c:init_stacks, except that it uses less memory |
442 | * on the (sometimes correct) assumption that coroutines do |
777 | * on the (sometimes correct) assumption that coroutines do |
443 | * not usually need a lot of stackspace. |
778 | * not usually need a lot of stackspace. |
444 | */ |
779 | */ |
|
|
780 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
781 | # define coro_init_stacks(thx) init_stacks () |
|
|
782 | #else |
445 | static void |
783 | static void |
446 | coro_init_stacks (pTHX) |
784 | coro_init_stacks (pTHX) |
447 | { |
785 | { |
448 | LOCK; |
786 | PL_curstackinfo = new_stackinfo(32, 8); |
449 | |
|
|
450 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
|
|
451 | PL_curstackinfo->si_type = PERLSI_MAIN; |
787 | PL_curstackinfo->si_type = PERLSI_MAIN; |
452 | PL_curstack = PL_curstackinfo->si_stack; |
788 | PL_curstack = PL_curstackinfo->si_stack; |
453 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
789 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
454 | |
790 | |
455 | PL_stack_base = AvARRAY(PL_curstack); |
791 | PL_stack_base = AvARRAY(PL_curstack); |
456 | PL_stack_sp = PL_stack_base; |
792 | PL_stack_sp = PL_stack_base; |
457 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
793 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
458 | |
794 | |
459 | New(50,PL_tmps_stack,96,SV*); |
795 | New(50,PL_tmps_stack,32,SV*); |
460 | PL_tmps_floor = -1; |
796 | PL_tmps_floor = -1; |
461 | PL_tmps_ix = -1; |
797 | PL_tmps_ix = -1; |
462 | PL_tmps_max = 96; |
798 | PL_tmps_max = 32; |
463 | |
799 | |
464 | New(54,PL_markstack,16,I32); |
800 | New(54,PL_markstack,16,I32); |
465 | PL_markstack_ptr = PL_markstack; |
801 | PL_markstack_ptr = PL_markstack; |
466 | PL_markstack_max = PL_markstack + 16; |
802 | PL_markstack_max = PL_markstack + 16; |
467 | |
803 | |
468 | #ifdef SET_MARK_OFFSET |
804 | #ifdef SET_MARK_OFFSET |
469 | SET_MARK_OFFSET; |
805 | SET_MARK_OFFSET; |
470 | #endif |
806 | #endif |
471 | |
807 | |
472 | New(54,PL_scopestack,16,I32); |
808 | New(54,PL_scopestack,8,I32); |
473 | PL_scopestack_ix = 0; |
809 | PL_scopestack_ix = 0; |
474 | PL_scopestack_max = 16; |
810 | PL_scopestack_max = 8; |
475 | |
811 | |
476 | New(54,PL_savestack,96,ANY); |
812 | New(54,PL_savestack,24,ANY); |
477 | PL_savestack_ix = 0; |
813 | PL_savestack_ix = 0; |
478 | PL_savestack_max = 96; |
814 | PL_savestack_max = 24; |
479 | |
815 | |
480 | #if PERL_VERSION < 9 |
816 | #if !PERL_VERSION_ATLEAST (5,10,0) |
481 | New(54,PL_retstack,8,OP*); |
817 | New(54,PL_retstack,4,OP*); |
482 | PL_retstack_ix = 0; |
818 | PL_retstack_ix = 0; |
483 | PL_retstack_max = 8; |
819 | PL_retstack_max = 4; |
484 | #endif |
820 | #endif |
485 | |
|
|
486 | UNLOCK; |
|
|
487 | } |
821 | } |
|
|
822 | #endif |
488 | |
823 | |
489 | /* |
824 | /* |
490 | * destroy the stacks, the callchain etc... |
825 | * destroy the stacks, the callchain etc... |
491 | */ |
826 | */ |
492 | static void |
827 | static void |
493 | destroy_stacks(pTHX) |
828 | coro_destruct_stacks (pTHX) |
494 | { |
829 | { |
495 | if (!IN_DESTRUCT) |
|
|
496 | { |
|
|
497 | /* is this ugly, I ask? */ |
|
|
498 | LEAVE_SCOPE (0); |
|
|
499 | |
|
|
500 | /* sure it is, but more important: is it correct?? :/ */ |
|
|
501 | FREETMPS; |
|
|
502 | |
|
|
503 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
|
|
504 | } |
|
|
505 | |
|
|
506 | while (PL_curstackinfo->si_next) |
830 | while (PL_curstackinfo->si_next) |
507 | PL_curstackinfo = PL_curstackinfo->si_next; |
831 | PL_curstackinfo = PL_curstackinfo->si_next; |
508 | |
832 | |
509 | while (PL_curstackinfo) |
833 | while (PL_curstackinfo) |
510 | { |
834 | { |
511 | PERL_SI *p = PL_curstackinfo->si_prev; |
835 | PERL_SI *p = PL_curstackinfo->si_prev; |
512 | |
836 | |
513 | { /*D*//*remove*/ |
|
|
514 | dSP; |
|
|
515 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
516 | PUTBACK; /* possibly superfluous */ |
|
|
517 | } |
|
|
518 | |
|
|
519 | if (!IN_DESTRUCT) |
837 | if (!IN_DESTRUCT) |
520 | { |
|
|
521 | dounwind (-1);/*D*//*remove*/ |
|
|
522 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
838 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
523 | } |
|
|
524 | |
839 | |
525 | Safefree (PL_curstackinfo->si_cxstack); |
840 | Safefree (PL_curstackinfo->si_cxstack); |
526 | Safefree (PL_curstackinfo); |
841 | Safefree (PL_curstackinfo); |
527 | PL_curstackinfo = p; |
842 | PL_curstackinfo = p; |
528 | } |
843 | } |
529 | |
844 | |
530 | Safefree (PL_tmps_stack); |
845 | Safefree (PL_tmps_stack); |
531 | Safefree (PL_markstack); |
846 | Safefree (PL_markstack); |
532 | Safefree (PL_scopestack); |
847 | Safefree (PL_scopestack); |
533 | Safefree (PL_savestack); |
848 | Safefree (PL_savestack); |
534 | #if PERL_VERSION < 9 |
849 | #if !PERL_VERSION_ATLEAST (5,10,0) |
535 | Safefree (PL_retstack); |
850 | Safefree (PL_retstack); |
536 | #endif |
851 | #endif |
537 | } |
852 | } |
538 | |
853 | |
539 | static void |
854 | #define CORO_RSS \ |
540 | allocate_stack (Coro__State ctx, int alloc) |
855 | rss += sizeof (SYM (curstackinfo)); \ |
541 | { |
856 | rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \ |
542 | coro_stack *stack; |
857 | rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \ |
|
|
858 | rss += SYM (tmps_max) * sizeof (SV *); \ |
|
|
859 | rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \ |
|
|
860 | rss += SYM (scopestack_max) * sizeof (I32); \ |
|
|
861 | rss += SYM (savestack_max) * sizeof (ANY); |
543 | |
862 | |
544 | New (0, stack, 1, coro_stack); |
863 | static size_t |
|
|
864 | coro_rss (pTHX_ struct coro *coro) |
|
|
865 | { |
|
|
866 | size_t rss = sizeof (*coro); |
545 | |
867 | |
546 | stack->refcnt = 1; |
868 | if (coro->mainstack) |
547 | stack->usecnt = 1; |
|
|
548 | stack->gencnt = ctx->gencnt = 0; |
|
|
549 | |
|
|
550 | if (alloc) |
|
|
551 | { |
869 | { |
552 | #if HAVE_MMAP |
870 | if (coro->flags & CF_RUNNING) |
553 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */ |
|
|
554 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
555 | if (stack->sptr != (void *)-1) |
|
|
556 | { |
871 | { |
557 | # if STACKGUARD |
872 | #define SYM(sym) PL_ ## sym |
558 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
873 | CORO_RSS; |
559 | # endif |
874 | #undef SYM |
560 | } |
875 | } |
561 | else |
876 | else |
|
|
877 | { |
|
|
878 | #define SYM(sym) coro->slot->sym |
|
|
879 | CORO_RSS; |
|
|
880 | #undef SYM |
|
|
881 | } |
|
|
882 | } |
|
|
883 | |
|
|
884 | return rss; |
|
|
885 | } |
|
|
886 | |
|
|
887 | /** coroutine stack handling ************************************************/ |
|
|
888 | |
|
|
889 | static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
|
|
890 | static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
|
|
891 | static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
|
|
892 | |
|
|
893 | /* apparently < 5.8.8 */ |
|
|
894 | #ifndef MgPV_nolen_const |
|
|
895 | #define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
|
|
896 | SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
|
|
897 | (const char*)(mg)->mg_ptr) |
562 | #endif |
898 | #endif |
|
|
899 | |
|
|
900 | /* |
|
|
901 | * This overrides the default magic get method of %SIG elements. |
|
|
902 | * The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
|
|
903 | * and instead of trying to save and restore the hash elements, we just provide |
|
|
904 | * readback here. |
|
|
905 | */ |
|
|
906 | static int |
|
|
907 | coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
|
|
908 | { |
|
|
909 | const char *s = MgPV_nolen_const (mg); |
|
|
910 | |
|
|
911 | if (*s == '_') |
|
|
912 | { |
|
|
913 | SV **svp = 0; |
|
|
914 | |
|
|
915 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
916 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
917 | |
|
|
918 | if (svp) |
563 | { |
919 | { |
564 | stack->ssize = - (STACKSIZE * (long)sizeof (long)); |
920 | sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
565 | New (0, stack->sptr, STACKSIZE, long); |
921 | return 0; |
566 | } |
922 | } |
567 | } |
923 | } |
568 | else |
|
|
569 | stack->sptr = 0; |
|
|
570 | |
924 | |
571 | ctx->stack = stack; |
925 | return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
572 | } |
926 | } |
573 | |
927 | |
574 | static void |
928 | static int |
575 | deallocate_stack (Coro__State ctx) |
929 | coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
576 | { |
930 | { |
577 | coro_stack *stack = ctx->stack; |
931 | const char *s = MgPV_nolen_const (mg); |
578 | |
932 | |
579 | ctx->stack = 0; |
933 | if (*s == '_') |
580 | |
|
|
581 | if (stack) |
|
|
582 | { |
934 | { |
583 | if (!--stack->refcnt) |
935 | SV **svp = 0; |
|
|
936 | |
|
|
937 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
938 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
939 | |
|
|
940 | if (svp) |
584 | { |
941 | { |
585 | #ifdef HAVE_MMAP |
942 | SV *old = *svp; |
586 | if (stack->ssize > 0 && stack->sptr) |
943 | *svp = 0; |
587 | munmap (stack->sptr, stack->ssize); |
944 | SvREFCNT_dec (old); |
588 | else |
945 | return 0; |
589 | #endif |
|
|
590 | Safefree (stack->sptr); |
|
|
591 | |
|
|
592 | Safefree (stack); |
|
|
593 | } |
946 | } |
594 | else if (ctx->gencnt == stack->gencnt) |
947 | } |
595 | --stack->usecnt; |
948 | |
|
|
949 | return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
|
|
950 | } |
|
|
951 | |
|
|
952 | static int |
|
|
953 | coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
|
|
954 | { |
|
|
955 | const char *s = MgPV_nolen_const (mg); |
|
|
956 | |
|
|
957 | if (*s == '_') |
596 | } |
958 | { |
597 | } |
959 | SV **svp = 0; |
598 | |
960 | |
|
|
961 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
962 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
963 | |
|
|
964 | if (svp) |
|
|
965 | { |
|
|
966 | SV *old = *svp; |
|
|
967 | *svp = SvOK (sv) ? newSVsv (sv) : 0; |
|
|
968 | SvREFCNT_dec (old); |
|
|
969 | return 0; |
|
|
970 | } |
|
|
971 | } |
|
|
972 | |
|
|
973 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
|
|
974 | } |
|
|
975 | |
|
|
976 | static void |
|
|
977 | prepare_nop (pTHX_ struct coro_transfer_args *ta) |
|
|
978 | { |
|
|
979 | /* kind of mega-hacky, but works */ |
|
|
980 | ta->next = ta->prev = (struct coro *)ta; |
|
|
981 | } |
|
|
982 | |
599 | static void |
983 | static int |
600 | setup_coro (void *arg) |
984 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
|
|
985 | { |
|
|
986 | return 0; |
|
|
987 | } |
|
|
988 | |
|
|
989 | static int |
|
|
990 | slf_check_repeat (pTHX_ struct CoroSLF *frame) |
|
|
991 | { |
|
|
992 | return 1; |
|
|
993 | } |
|
|
994 | |
|
|
995 | static UNOP init_perl_op; |
|
|
996 | |
|
|
997 | static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
|
|
998 | init_perl (pTHX_ struct coro *coro) |
601 | { |
999 | { |
602 | /* |
1000 | /* |
603 | * emulate part of the perl startup here. |
1001 | * emulate part of the perl startup here. |
604 | */ |
1002 | */ |
|
|
1003 | coro_init_stacks (aTHX); |
|
|
1004 | |
|
|
1005 | PL_runops = RUNOPS_DEFAULT; |
|
|
1006 | PL_curcop = &PL_compiling; |
|
|
1007 | PL_in_eval = EVAL_NULL; |
|
|
1008 | PL_comppad = 0; |
|
|
1009 | PL_comppad_name = 0; |
|
|
1010 | PL_comppad_name_fill = 0; |
|
|
1011 | PL_comppad_name_floor = 0; |
|
|
1012 | PL_curpm = 0; |
|
|
1013 | PL_curpad = 0; |
|
|
1014 | PL_localizing = 0; |
|
|
1015 | PL_dirty = 0; |
|
|
1016 | PL_restartop = 0; |
|
|
1017 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
1018 | PL_parser = 0; |
|
|
1019 | #endif |
|
|
1020 | PL_hints = 0; |
|
|
1021 | |
|
|
1022 | /* recreate the die/warn hooks */ |
|
|
1023 | PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
|
|
1024 | PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
|
|
1025 | |
|
|
1026 | GvSV (PL_defgv) = newSV (0); |
|
|
1027 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
1028 | GvSV (PL_errgv) = newSV (0); |
|
|
1029 | GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
|
|
1030 | GvHV (PL_hintgv) = 0; |
|
|
1031 | PL_rs = newSVsv (GvSV (irsgv)); |
|
|
1032 | PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
|
|
1033 | |
|
|
1034 | { |
|
|
1035 | dSP; |
|
|
1036 | UNOP myop; |
|
|
1037 | |
|
|
1038 | Zero (&myop, 1, UNOP); |
|
|
1039 | myop.op_next = Nullop; |
|
|
1040 | myop.op_type = OP_ENTERSUB; |
|
|
1041 | myop.op_flags = OPf_WANT_VOID; |
|
|
1042 | |
|
|
1043 | PUSHMARK (SP); |
|
|
1044 | PUSHs ((SV *)coro->startcv); |
|
|
1045 | PUTBACK; |
|
|
1046 | PL_op = (OP *)&myop; |
|
|
1047 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1048 | } |
|
|
1049 | |
|
|
1050 | /* this newly created coroutine might be run on an existing cctx which most |
|
|
1051 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
|
|
1052 | */ |
|
|
1053 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
|
|
1054 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
|
|
1055 | |
|
|
1056 | /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ |
|
|
1057 | init_perl_op.op_next = PL_op; |
|
|
1058 | init_perl_op.op_type = OP_ENTERSUB; |
|
|
1059 | init_perl_op.op_ppaddr = pp_slf; |
|
|
1060 | /* no flags etc. required, as an init function won't be called */ |
|
|
1061 | |
|
|
1062 | PL_op = (OP *)&init_perl_op; |
|
|
1063 | |
|
|
1064 | /* copy throw, in case it was set before init_perl */ |
|
|
1065 | CORO_THROW = coro->except; |
|
|
1066 | |
|
|
1067 | SWAP_SVS (coro); |
|
|
1068 | |
|
|
1069 | if (expect_false (enable_times)) |
|
|
1070 | { |
|
|
1071 | coro_times_update (); |
|
|
1072 | coro_times_sub (coro); |
|
|
1073 | } |
|
|
1074 | } |
|
|
1075 | |
|
|
1076 | static void |
|
|
1077 | coro_unwind_stacks (pTHX) |
|
|
1078 | { |
|
|
1079 | if (!IN_DESTRUCT) |
|
|
1080 | { |
|
|
1081 | /* restore all saved variables and stuff */ |
|
|
1082 | LEAVE_SCOPE (0); |
|
|
1083 | assert (PL_tmps_floor == -1); |
|
|
1084 | |
|
|
1085 | /* free all temporaries */ |
|
|
1086 | FREETMPS; |
|
|
1087 | assert (PL_tmps_ix == -1); |
|
|
1088 | |
|
|
1089 | /* unwind all extra stacks */ |
|
|
1090 | POPSTACK_TO (PL_mainstack); |
|
|
1091 | |
|
|
1092 | /* unwind main stack */ |
|
|
1093 | dounwind (-1); |
|
|
1094 | } |
|
|
1095 | } |
|
|
1096 | |
|
|
1097 | static void |
|
|
1098 | destroy_perl (pTHX_ struct coro *coro) |
|
|
1099 | { |
|
|
1100 | SV *svf [9]; |
|
|
1101 | |
|
|
1102 | { |
|
|
1103 | struct coro *current = SvSTATE_current; |
|
|
1104 | |
|
|
1105 | assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack)); |
|
|
1106 | |
|
|
1107 | save_perl (aTHX_ current); |
|
|
1108 | load_perl (aTHX_ coro); |
|
|
1109 | |
|
|
1110 | coro_unwind_stacks (aTHX); |
|
|
1111 | coro_destruct_stacks (aTHX); |
|
|
1112 | |
|
|
1113 | /* restore swapped sv's */ |
|
|
1114 | SWAP_SVS (coro); |
|
|
1115 | |
|
|
1116 | // now save some sv's to be free'd later |
|
|
1117 | svf [0] = GvSV (PL_defgv); |
|
|
1118 | svf [1] = (SV *)GvAV (PL_defgv); |
|
|
1119 | svf [2] = GvSV (PL_errgv); |
|
|
1120 | svf [3] = (SV *)PL_defoutgv; |
|
|
1121 | svf [4] = PL_rs; |
|
|
1122 | svf [5] = GvSV (irsgv); |
|
|
1123 | svf [6] = (SV *)GvHV (PL_hintgv); |
|
|
1124 | svf [7] = PL_diehook; |
|
|
1125 | svf [8] = PL_warnhook; |
|
|
1126 | assert (9 == sizeof (svf) / sizeof (*svf)); |
|
|
1127 | |
|
|
1128 | load_perl (aTHX_ current); |
|
|
1129 | } |
|
|
1130 | |
|
|
1131 | { |
|
|
1132 | unsigned int i; |
|
|
1133 | |
|
|
1134 | for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i) |
|
|
1135 | SvREFCNT_dec (svf [i]); |
|
|
1136 | |
|
|
1137 | SvREFCNT_dec (coro->saved_deffh); |
|
|
1138 | SvREFCNT_dec (coro->rouse_cb); |
|
|
1139 | SvREFCNT_dec (coro->invoke_cb); |
|
|
1140 | SvREFCNT_dec (coro->invoke_av); |
|
|
1141 | } |
|
|
1142 | } |
|
|
1143 | |
|
|
1144 | INLINE void |
|
|
1145 | free_coro_mortal (pTHX) |
|
|
1146 | { |
|
|
1147 | if (expect_true (coro_mortal)) |
|
|
1148 | { |
|
|
1149 | SvREFCNT_dec (coro_mortal); |
|
|
1150 | coro_mortal = 0; |
|
|
1151 | } |
|
|
1152 | } |
|
|
1153 | |
|
|
1154 | static int |
|
|
1155 | runops_trace (pTHX) |
|
|
1156 | { |
|
|
1157 | COP *oldcop = 0; |
|
|
1158 | int oldcxix = -2; |
|
|
1159 | |
|
|
1160 | while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
|
|
1161 | { |
|
|
1162 | PERL_ASYNC_CHECK (); |
|
|
1163 | |
|
|
1164 | if (cctx_current->flags & CC_TRACE_ALL) |
|
|
1165 | { |
|
|
1166 | if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB) |
|
|
1167 | { |
|
|
1168 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
1169 | SV **bot, **top; |
|
|
1170 | AV *av = newAV (); /* return values */ |
|
|
1171 | SV **cb; |
|
|
1172 | dSP; |
|
|
1173 | |
|
|
1174 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1175 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1176 | if (isGV (gv)) |
|
|
1177 | gv_efullname3 (fullname, gv, 0); |
|
|
1178 | |
|
|
1179 | bot = PL_stack_base + cx->blk_oldsp + 1; |
|
|
1180 | top = cx->blk_gimme == G_ARRAY ? SP + 1 |
|
|
1181 | : cx->blk_gimme == G_SCALAR ? bot + 1 |
|
|
1182 | : bot; |
|
|
1183 | |
|
|
1184 | av_extend (av, top - bot); |
|
|
1185 | while (bot < top) |
|
|
1186 | av_push (av, SvREFCNT_inc_NN (*bot++)); |
|
|
1187 | |
|
|
1188 | PL_runops = RUNOPS_DEFAULT; |
|
|
1189 | ENTER; |
|
|
1190 | SAVETMPS; |
|
|
1191 | EXTEND (SP, 3); |
|
|
1192 | PUSHMARK (SP); |
|
|
1193 | PUSHs (&PL_sv_no); |
|
|
1194 | PUSHs (fullname); |
|
|
1195 | PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
1196 | PUTBACK; |
|
|
1197 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1198 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1199 | SPAGAIN; |
|
|
1200 | FREETMPS; |
|
|
1201 | LEAVE; |
|
|
1202 | PL_runops = runops_trace; |
|
|
1203 | } |
|
|
1204 | |
|
|
1205 | if (oldcop != PL_curcop) |
|
|
1206 | { |
|
|
1207 | oldcop = PL_curcop; |
|
|
1208 | |
|
|
1209 | if (PL_curcop != &PL_compiling) |
|
|
1210 | { |
|
|
1211 | SV **cb; |
|
|
1212 | |
|
|
1213 | if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB) |
|
|
1214 | { |
|
|
1215 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
1216 | |
|
|
1217 | if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
|
|
1218 | { |
|
|
1219 | dSP; |
|
|
1220 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1221 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1222 | |
|
|
1223 | if (isGV (gv)) |
|
|
1224 | gv_efullname3 (fullname, gv, 0); |
|
|
1225 | |
|
|
1226 | PL_runops = RUNOPS_DEFAULT; |
|
|
1227 | ENTER; |
|
|
1228 | SAVETMPS; |
|
|
1229 | EXTEND (SP, 3); |
|
|
1230 | PUSHMARK (SP); |
|
|
1231 | PUSHs (&PL_sv_yes); |
|
|
1232 | PUSHs (fullname); |
|
|
1233 | PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
|
|
1234 | PUTBACK; |
|
|
1235 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1236 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1237 | SPAGAIN; |
|
|
1238 | FREETMPS; |
|
|
1239 | LEAVE; |
|
|
1240 | PL_runops = runops_trace; |
|
|
1241 | } |
|
|
1242 | |
|
|
1243 | oldcxix = cxstack_ix; |
|
|
1244 | } |
|
|
1245 | |
|
|
1246 | if (cctx_current->flags & CC_TRACE_LINE) |
|
|
1247 | { |
|
|
1248 | dSP; |
|
|
1249 | |
|
|
1250 | PL_runops = RUNOPS_DEFAULT; |
|
|
1251 | ENTER; |
|
|
1252 | SAVETMPS; |
|
|
1253 | EXTEND (SP, 3); |
|
|
1254 | PL_runops = RUNOPS_DEFAULT; |
|
|
1255 | PUSHMARK (SP); |
|
|
1256 | PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
|
|
1257 | PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
|
|
1258 | PUTBACK; |
|
|
1259 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
|
|
1260 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1261 | SPAGAIN; |
|
|
1262 | FREETMPS; |
|
|
1263 | LEAVE; |
|
|
1264 | PL_runops = runops_trace; |
|
|
1265 | } |
|
|
1266 | } |
|
|
1267 | } |
|
|
1268 | } |
|
|
1269 | } |
|
|
1270 | |
|
|
1271 | TAINT_NOT; |
|
|
1272 | return 0; |
|
|
1273 | } |
|
|
1274 | |
|
|
1275 | static struct CoroSLF cctx_ssl_frame; |
|
|
1276 | |
|
|
1277 | static void |
|
|
1278 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
|
|
1279 | { |
|
|
1280 | ta->prev = 0; |
|
|
1281 | } |
|
|
1282 | |
|
|
1283 | static int |
|
|
1284 | slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) |
|
|
1285 | { |
|
|
1286 | *frame = cctx_ssl_frame; |
|
|
1287 | |
|
|
1288 | return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ |
|
|
1289 | } |
|
|
1290 | |
|
|
1291 | /* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ |
|
|
1292 | static void NOINLINE |
|
|
1293 | cctx_prepare (pTHX) |
|
|
1294 | { |
|
|
1295 | PL_top_env = &PL_start_env; |
|
|
1296 | |
|
|
1297 | if (cctx_current->flags & CC_TRACE) |
|
|
1298 | PL_runops = runops_trace; |
|
|
1299 | |
|
|
1300 | /* we already must be executing an SLF op, there is no other valid way |
|
|
1301 | * that can lead to creation of a new cctx */ |
|
|
1302 | assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", |
|
|
1303 | slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); |
|
|
1304 | |
|
|
1305 | /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ |
|
|
1306 | cctx_ssl_frame = slf_frame; |
|
|
1307 | |
|
|
1308 | slf_frame.prepare = slf_prepare_set_stacklevel; |
|
|
1309 | slf_frame.check = slf_check_set_stacklevel; |
|
|
1310 | } |
|
|
1311 | |
|
|
1312 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
|
|
1313 | INLINE void |
|
|
1314 | transfer_tail (pTHX) |
|
|
1315 | { |
|
|
1316 | free_coro_mortal (aTHX); |
|
|
1317 | } |
|
|
1318 | |
|
|
1319 | /* |
|
|
1320 | * this is a _very_ stripped down perl interpreter ;) |
|
|
1321 | */ |
|
|
1322 | static void |
|
|
1323 | cctx_run (void *arg) |
|
|
1324 | { |
|
|
1325 | #ifdef USE_ITHREADS |
|
|
1326 | # if CORO_PTHREAD |
|
|
1327 | PERL_SET_CONTEXT (coro_thx); |
|
|
1328 | # endif |
|
|
1329 | #endif |
|
|
1330 | { |
|
|
1331 | dTHX; |
|
|
1332 | |
|
|
1333 | /* normally we would need to skip the entersub here */ |
|
|
1334 | /* not doing so will re-execute it, which is exactly what we want */ |
|
|
1335 | /* PL_nop = PL_nop->op_next */ |
|
|
1336 | |
|
|
1337 | /* inject a fake subroutine call to cctx_init */ |
|
|
1338 | cctx_prepare (aTHX); |
|
|
1339 | |
|
|
1340 | /* cctx_run is the alternative tail of transfer() */ |
|
|
1341 | transfer_tail (aTHX); |
|
|
1342 | |
|
|
1343 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
|
|
1344 | PL_restartop = PL_op; |
|
|
1345 | perl_run (PL_curinterp); |
|
|
1346 | /* |
|
|
1347 | * Unfortunately, there is no way to get at the return values of the |
|
|
1348 | * coro body here, as perl_run destroys these. Likewise, we cannot catch |
|
|
1349 | * runtime errors here, as this is just a random interpreter, not a thread. |
|
|
1350 | */ |
|
|
1351 | |
|
|
1352 | /* |
|
|
1353 | * If perl-run returns we assume exit() was being called or the coro |
|
|
1354 | * fell off the end, which seems to be the only valid (non-bug) |
|
|
1355 | * reason for perl_run to return. We try to exit by jumping to the |
|
|
1356 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
|
|
1357 | * coroutine as Coro has no such concept. |
|
|
1358 | * This actually isn't valid with the pthread backend, but OSes requiring |
|
|
1359 | * that backend are too broken to do it in a standards-compliant way. |
|
|
1360 | */ |
|
|
1361 | PL_top_env = main_top_env; |
|
|
1362 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
|
|
1363 | } |
|
|
1364 | } |
|
|
1365 | |
|
|
1366 | static coro_cctx * |
|
|
1367 | cctx_new () |
|
|
1368 | { |
|
|
1369 | coro_cctx *cctx; |
|
|
1370 | |
|
|
1371 | ++cctx_count; |
|
|
1372 | New (0, cctx, 1, coro_cctx); |
|
|
1373 | |
|
|
1374 | cctx->gen = cctx_gen; |
|
|
1375 | cctx->flags = 0; |
|
|
1376 | cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
|
|
1377 | |
|
|
1378 | return cctx; |
|
|
1379 | } |
|
|
1380 | |
|
|
1381 | /* create a new cctx only suitable as source */ |
|
|
1382 | static coro_cctx * |
|
|
1383 | cctx_new_empty () |
|
|
1384 | { |
|
|
1385 | coro_cctx *cctx = cctx_new (); |
|
|
1386 | |
|
|
1387 | cctx->sptr = 0; |
|
|
1388 | coro_create (&cctx->cctx, 0, 0, 0, 0); |
|
|
1389 | |
|
|
1390 | return cctx; |
|
|
1391 | } |
|
|
1392 | |
|
|
1393 | /* create a new cctx suitable as destination/running a perl interpreter */ |
|
|
1394 | static coro_cctx * |
|
|
1395 | cctx_new_run () |
|
|
1396 | { |
|
|
1397 | coro_cctx *cctx = cctx_new (); |
|
|
1398 | void *stack_start; |
|
|
1399 | size_t stack_size; |
|
|
1400 | |
|
|
1401 | #if HAVE_MMAP |
|
|
1402 | cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
|
|
1403 | /* mmap supposedly does allocate-on-write for us */ |
|
|
1404 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
1405 | |
|
|
1406 | if (cctx->sptr != (void *)-1) |
|
|
1407 | { |
|
|
1408 | #if CORO_STACKGUARD |
|
|
1409 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
1410 | #endif |
|
|
1411 | stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
|
|
1412 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
1413 | cctx->flags |= CC_MAPPED; |
|
|
1414 | } |
|
|
1415 | else |
|
|
1416 | #endif |
|
|
1417 | { |
|
|
1418 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
|
|
1419 | New (0, cctx->sptr, cctx_stacksize, long); |
|
|
1420 | |
|
|
1421 | if (!cctx->sptr) |
|
|
1422 | { |
|
|
1423 | perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
|
|
1424 | _exit (EXIT_FAILURE); |
|
|
1425 | } |
|
|
1426 | |
|
|
1427 | stack_start = cctx->sptr; |
|
|
1428 | stack_size = cctx->ssize; |
|
|
1429 | } |
|
|
1430 | |
|
|
1431 | #if CORO_USE_VALGRIND |
|
|
1432 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
|
|
1433 | #endif |
|
|
1434 | |
|
|
1435 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
|
|
1436 | |
|
|
1437 | return cctx; |
|
|
1438 | } |
|
|
1439 | |
|
|
1440 | static void |
|
|
1441 | cctx_destroy (coro_cctx *cctx) |
|
|
1442 | { |
|
|
1443 | if (!cctx) |
|
|
1444 | return; |
|
|
1445 | |
|
|
1446 | assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary? |
|
|
1447 | |
|
|
1448 | --cctx_count; |
|
|
1449 | coro_destroy (&cctx->cctx); |
|
|
1450 | |
|
|
1451 | /* coro_transfer creates new, empty cctx's */ |
|
|
1452 | if (cctx->sptr) |
|
|
1453 | { |
|
|
1454 | #if CORO_USE_VALGRIND |
|
|
1455 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
1456 | #endif |
|
|
1457 | |
|
|
1458 | #if HAVE_MMAP |
|
|
1459 | if (cctx->flags & CC_MAPPED) |
|
|
1460 | munmap (cctx->sptr, cctx->ssize); |
|
|
1461 | else |
|
|
1462 | #endif |
|
|
1463 | Safefree (cctx->sptr); |
|
|
1464 | } |
|
|
1465 | |
|
|
1466 | Safefree (cctx); |
|
|
1467 | } |
|
|
1468 | |
|
|
1469 | /* wether this cctx should be destructed */ |
|
|
1470 | #define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
|
|
1471 | |
|
|
1472 | static coro_cctx * |
|
|
1473 | cctx_get (pTHX) |
|
|
1474 | { |
|
|
1475 | while (expect_true (cctx_first)) |
|
|
1476 | { |
|
|
1477 | coro_cctx *cctx = cctx_first; |
|
|
1478 | cctx_first = cctx->next; |
|
|
1479 | --cctx_idle; |
|
|
1480 | |
|
|
1481 | if (expect_true (!CCTX_EXPIRED (cctx))) |
|
|
1482 | return cctx; |
|
|
1483 | |
|
|
1484 | cctx_destroy (cctx); |
|
|
1485 | } |
|
|
1486 | |
|
|
1487 | return cctx_new_run (); |
|
|
1488 | } |
|
|
1489 | |
|
|
1490 | static void |
|
|
1491 | cctx_put (coro_cctx *cctx) |
|
|
1492 | { |
|
|
1493 | assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
|
|
1494 | |
|
|
1495 | /* free another cctx if overlimit */ |
|
|
1496 | if (expect_false (cctx_idle >= cctx_max_idle)) |
|
|
1497 | { |
|
|
1498 | coro_cctx *first = cctx_first; |
|
|
1499 | cctx_first = first->next; |
|
|
1500 | --cctx_idle; |
|
|
1501 | |
|
|
1502 | cctx_destroy (first); |
|
|
1503 | } |
|
|
1504 | |
|
|
1505 | ++cctx_idle; |
|
|
1506 | cctx->next = cctx_first; |
|
|
1507 | cctx_first = cctx; |
|
|
1508 | } |
|
|
1509 | |
|
|
1510 | /** coroutine switching *****************************************************/ |
|
|
1511 | |
|
|
1512 | static void |
|
|
1513 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
|
|
1514 | { |
|
|
1515 | /* TODO: throwing up here is considered harmful */ |
|
|
1516 | |
|
|
1517 | if (expect_true (prev != next)) |
|
|
1518 | { |
|
|
1519 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
|
|
1520 | croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,"); |
|
|
1521 | |
|
|
1522 | if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED))) |
|
|
1523 | croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,"); |
|
|
1524 | |
|
|
1525 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
1526 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
|
|
1527 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
|
|
1528 | #endif |
|
|
1529 | } |
|
|
1530 | } |
|
|
1531 | |
|
|
1532 | /* always use the TRANSFER macro */ |
|
|
1533 | static void NOINLINE /* noinline so we have a fixed stackframe */ |
|
|
1534 | transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
|
|
1535 | { |
|
|
1536 | dSTACKLEVEL; |
|
|
1537 | |
|
|
1538 | /* sometimes transfer is only called to set idle_sp */ |
|
|
1539 | if (expect_false (!prev)) |
|
|
1540 | { |
|
|
1541 | cctx_current->idle_sp = STACKLEVEL; |
|
|
1542 | assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
1543 | } |
|
|
1544 | else if (expect_true (prev != next)) |
|
|
1545 | { |
|
|
1546 | coro_cctx *cctx_prev; |
|
|
1547 | |
|
|
1548 | if (expect_false (prev->flags & CF_NEW)) |
|
|
1549 | { |
|
|
1550 | /* create a new empty/source context */ |
|
|
1551 | prev->flags &= ~CF_NEW; |
|
|
1552 | prev->flags |= CF_RUNNING; |
|
|
1553 | } |
|
|
1554 | |
|
|
1555 | prev->flags &= ~CF_RUNNING; |
|
|
1556 | next->flags |= CF_RUNNING; |
|
|
1557 | |
|
|
1558 | /* first get rid of the old state */ |
|
|
1559 | save_perl (aTHX_ prev); |
|
|
1560 | |
|
|
1561 | if (expect_false (next->flags & CF_NEW)) |
|
|
1562 | { |
|
|
1563 | /* need to start coroutine */ |
|
|
1564 | next->flags &= ~CF_NEW; |
|
|
1565 | /* setup coroutine call */ |
|
|
1566 | init_perl (aTHX_ next); |
|
|
1567 | } |
|
|
1568 | else |
|
|
1569 | load_perl (aTHX_ next); |
|
|
1570 | |
|
|
1571 | /* possibly untie and reuse the cctx */ |
|
|
1572 | if (expect_true ( |
|
|
1573 | cctx_current->idle_sp == STACKLEVEL |
|
|
1574 | && !(cctx_current->flags & CC_TRACE) |
|
|
1575 | && !force_cctx |
|
|
1576 | )) |
|
|
1577 | { |
|
|
1578 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
|
|
1579 | assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); |
|
|
1580 | |
|
|
1581 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ |
|
|
1582 | /* without this the next cctx_get might destroy the running cctx while still in use */ |
|
|
1583 | if (expect_false (CCTX_EXPIRED (cctx_current))) |
|
|
1584 | if (expect_true (!next->cctx)) |
|
|
1585 | next->cctx = cctx_get (aTHX); |
|
|
1586 | |
|
|
1587 | cctx_put (cctx_current); |
|
|
1588 | } |
|
|
1589 | else |
|
|
1590 | prev->cctx = cctx_current; |
|
|
1591 | |
|
|
1592 | ++next->usecount; |
|
|
1593 | |
|
|
1594 | cctx_prev = cctx_current; |
|
|
1595 | cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); |
|
|
1596 | |
|
|
1597 | next->cctx = 0; |
|
|
1598 | |
|
|
1599 | if (expect_false (cctx_prev != cctx_current)) |
|
|
1600 | { |
|
|
1601 | cctx_prev->top_env = PL_top_env; |
|
|
1602 | PL_top_env = cctx_current->top_env; |
|
|
1603 | coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); |
|
|
1604 | } |
|
|
1605 | |
|
|
1606 | transfer_tail (aTHX); |
|
|
1607 | } |
|
|
1608 | } |
|
|
1609 | |
|
|
1610 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
|
|
1611 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
|
|
1612 | |
|
|
1613 | /** high level stuff ********************************************************/ |
|
|
1614 | |
|
|
1615 | static int |
|
|
1616 | coro_state_destroy (pTHX_ struct coro *coro) |
|
|
1617 | { |
|
|
1618 | if (coro->flags & CF_DESTROYED) |
|
|
1619 | return 0; |
|
|
1620 | |
|
|
1621 | if (coro->on_destroy && !PL_dirty) |
|
|
1622 | coro->on_destroy (aTHX_ coro); |
|
|
1623 | |
|
|
1624 | coro->flags |= CF_DESTROYED; |
|
|
1625 | |
|
|
1626 | if (coro->flags & CF_READY) |
|
|
1627 | { |
|
|
1628 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
1629 | /* alternative: look through all ready queues and remove the coro */ |
|
|
1630 | --coro_nready; |
|
|
1631 | } |
|
|
1632 | else |
|
|
1633 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
|
|
1634 | |
|
|
1635 | if (coro->mainstack |
|
|
1636 | && coro->mainstack != main_mainstack |
|
|
1637 | && coro->slot |
|
|
1638 | && !PL_dirty) |
|
|
1639 | destroy_perl (aTHX_ coro); |
|
|
1640 | |
|
|
1641 | if (coro->next) coro->next->prev = coro->prev; |
|
|
1642 | if (coro->prev) coro->prev->next = coro->next; |
|
|
1643 | if (coro == coro_first) coro_first = coro->next; |
|
|
1644 | |
|
|
1645 | cctx_destroy (coro->cctx); |
|
|
1646 | SvREFCNT_dec (coro->startcv); |
|
|
1647 | SvREFCNT_dec (coro->args); |
|
|
1648 | SvREFCNT_dec (coro->swap_sv); |
|
|
1649 | SvREFCNT_dec (CORO_THROW); |
|
|
1650 | |
|
|
1651 | return 1; |
|
|
1652 | } |
|
|
1653 | |
|
|
1654 | static int |
|
|
1655 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
1656 | { |
|
|
1657 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1658 | mg->mg_ptr = 0; |
|
|
1659 | |
|
|
1660 | coro->hv = 0; |
|
|
1661 | |
|
|
1662 | if (--coro->refcnt < 0) |
|
|
1663 | { |
|
|
1664 | coro_state_destroy (aTHX_ coro); |
|
|
1665 | Safefree (coro); |
|
|
1666 | } |
|
|
1667 | |
|
|
1668 | return 0; |
|
|
1669 | } |
|
|
1670 | |
|
|
1671 | static int |
|
|
1672 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
1673 | { |
|
|
1674 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1675 | |
|
|
1676 | ++coro->refcnt; |
|
|
1677 | |
|
|
1678 | return 0; |
|
|
1679 | } |
|
|
1680 | |
|
|
1681 | static MGVTBL coro_state_vtbl = { |
|
|
1682 | 0, 0, 0, 0, |
|
|
1683 | coro_state_free, |
|
|
1684 | 0, |
|
|
1685 | #ifdef MGf_DUP |
|
|
1686 | coro_state_dup, |
|
|
1687 | #else |
|
|
1688 | # define MGf_DUP 0 |
|
|
1689 | #endif |
|
|
1690 | }; |
|
|
1691 | |
|
|
1692 | static void |
|
|
1693 | prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
|
|
1694 | { |
|
|
1695 | ta->prev = SvSTATE (prev_sv); |
|
|
1696 | ta->next = SvSTATE (next_sv); |
|
|
1697 | TRANSFER_CHECK (*ta); |
|
|
1698 | } |
|
|
1699 | |
|
|
1700 | static void |
|
|
1701 | api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
|
|
1702 | { |
|
|
1703 | struct coro_transfer_args ta; |
|
|
1704 | |
|
|
1705 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
|
|
1706 | TRANSFER (ta, 1); |
|
|
1707 | } |
|
|
1708 | |
|
|
1709 | /** Coro ********************************************************************/ |
|
|
1710 | |
|
|
1711 | INLINE void |
|
|
1712 | coro_enq (pTHX_ struct coro *coro) |
|
|
1713 | { |
|
|
1714 | struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN]; |
|
|
1715 | |
|
|
1716 | SvREFCNT_inc_NN (coro->hv); |
|
|
1717 | |
|
|
1718 | coro->next_ready = 0; |
|
|
1719 | *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro; |
|
|
1720 | ready [1] = coro; |
|
|
1721 | } |
|
|
1722 | |
|
|
1723 | INLINE struct coro * |
|
|
1724 | coro_deq (pTHX) |
|
|
1725 | { |
|
|
1726 | int prio; |
|
|
1727 | |
|
|
1728 | for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; ) |
|
|
1729 | { |
|
|
1730 | struct coro **ready = coro_ready [prio]; |
|
|
1731 | |
|
|
1732 | if (ready [0]) |
|
|
1733 | { |
|
|
1734 | struct coro *coro = ready [0]; |
|
|
1735 | ready [0] = coro->next_ready; |
|
|
1736 | return coro; |
|
|
1737 | } |
|
|
1738 | } |
|
|
1739 | |
|
|
1740 | return 0; |
|
|
1741 | } |
|
|
1742 | |
|
|
1743 | static void |
|
|
1744 | invoke_sv_ready_hook_helper (void) |
|
|
1745 | { |
605 | dTHX; |
1746 | dTHX; |
606 | dSP; |
1747 | dSP; |
607 | Coro__State ctx = (Coro__State)arg; |
|
|
608 | SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); |
|
|
609 | |
1748 | |
610 | coro_init_stacks (aTHX); |
1749 | ENTER; |
611 | /*PL_curcop = 0;*/ |
1750 | SAVETMPS; |
612 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
|
|
613 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
614 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
|
|
615 | |
1751 | |
616 | SPAGAIN; |
|
|
617 | |
|
|
618 | if (ctx->stack) |
|
|
619 | { |
|
|
620 | ctx->cursp = 0; |
|
|
621 | |
|
|
622 | PUSHMARK(SP); |
1752 | PUSHMARK (SP); |
623 | PUTBACK; |
1753 | PUTBACK; |
624 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
1754 | call_sv (coro_readyhook, G_VOID | G_DISCARD); |
625 | |
1755 | |
626 | if (SvTRUE (ERRSV)) |
1756 | FREETMPS; |
627 | croak (NULL); |
1757 | LEAVE; |
628 | else |
1758 | } |
629 | croak ("FATAL: CCTXT coroutine returned!"); |
1759 | |
|
|
1760 | static int |
|
|
1761 | api_ready (pTHX_ SV *coro_sv) |
|
|
1762 | { |
|
|
1763 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1764 | |
|
|
1765 | if (coro->flags & CF_READY) |
|
|
1766 | return 0; |
|
|
1767 | |
|
|
1768 | coro->flags |= CF_READY; |
|
|
1769 | |
|
|
1770 | coro_enq (aTHX_ coro); |
|
|
1771 | |
|
|
1772 | if (!coro_nready++) |
|
|
1773 | if (coroapi.readyhook) |
|
|
1774 | coroapi.readyhook (); |
|
|
1775 | |
|
|
1776 | return 1; |
|
|
1777 | } |
|
|
1778 | |
|
|
1779 | static int |
|
|
1780 | api_is_ready (pTHX_ SV *coro_sv) |
|
|
1781 | { |
|
|
1782 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
1783 | } |
|
|
1784 | |
|
|
1785 | /* expects to own a reference to next->hv */ |
|
|
1786 | INLINE void |
|
|
1787 | prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) |
|
|
1788 | { |
|
|
1789 | SV *prev_sv = SvRV (coro_current); |
|
|
1790 | |
|
|
1791 | ta->prev = SvSTATE_hv (prev_sv); |
|
|
1792 | ta->next = next; |
|
|
1793 | |
|
|
1794 | TRANSFER_CHECK (*ta); |
|
|
1795 | |
|
|
1796 | SvRV_set (coro_current, (SV *)next->hv); |
|
|
1797 | |
|
|
1798 | free_coro_mortal (aTHX); |
|
|
1799 | coro_mortal = prev_sv; |
|
|
1800 | } |
|
|
1801 | |
|
|
1802 | static void |
|
|
1803 | prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
|
|
1804 | { |
|
|
1805 | for (;;) |
630 | } |
1806 | { |
631 | else |
1807 | struct coro *next = coro_deq (aTHX); |
632 | { |
|
|
633 | UNOP myop; |
|
|
634 | |
1808 | |
635 | Zero(&myop, 1, UNOP); |
1809 | if (expect_true (next)) |
636 | myop.op_next = Nullop; |
|
|
637 | myop.op_flags = OPf_WANT_VOID; |
|
|
638 | |
|
|
639 | PL_op = (OP *)&myop; |
|
|
640 | |
|
|
641 | PUSHMARK(SP); |
|
|
642 | XPUSHs (sub_init); |
|
|
643 | /* |
|
|
644 | * the next line is slightly wrong, as PL_op->op_next |
|
|
645 | * is actually being executed so we skip the first op. |
|
|
646 | * that doesn't matter, though, since it is only |
|
|
647 | * pp_nextstate and we never return... |
|
|
648 | * ah yes, and I don't care anyways ;) |
|
|
649 | */ |
|
|
650 | PUTBACK; |
|
|
651 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
652 | SPAGAIN; |
|
|
653 | |
|
|
654 | ENTER; /* necessary e.g. for dounwind */ |
|
|
655 | } |
|
|
656 | } |
|
|
657 | |
|
|
658 | static void |
|
|
659 | continue_coro (void *arg) |
|
|
660 | { |
|
|
661 | /* |
|
|
662 | * this is a _very_ stripped down perl interpreter ;) |
|
|
663 | */ |
|
|
664 | dTHX; |
|
|
665 | Coro__State ctx = (Coro__State)arg; |
|
|
666 | |
|
|
667 | PL_top_env = &PL_start_env; |
|
|
668 | |
|
|
669 | ctx->cursp = 0; |
|
|
670 | PL_op = PL_op->op_next; |
|
|
671 | CALLRUNOPS(aTHX); |
|
|
672 | |
|
|
673 | abort (); |
|
|
674 | } |
|
|
675 | |
|
|
676 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
677 | static void |
|
|
678 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
679 | { |
|
|
680 | dSTACKLEVEL; |
|
|
681 | |
|
|
682 | if (prev != next) |
|
|
683 | { |
|
|
684 | /* has this coro been created yet? */ |
|
|
685 | if (next->mainstack) |
|
|
686 | { |
1810 | { |
687 | LOCK; |
1811 | /* cannot transfer to destroyed coros, skip and look for next */ |
688 | SAVE (prev, flags); |
1812 | if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED))) |
689 | LOAD (next); |
1813 | SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */ |
690 | UNLOCK; |
1814 | else |
691 | |
|
|
692 | /* mark this state as in-use */ |
|
|
693 | next->mainstack = 0; |
|
|
694 | next->tmps_ix = -2; |
|
|
695 | |
|
|
696 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
697 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
698 | { |
1815 | { |
699 | if (!prev->stack) |
1816 | next->flags &= ~CF_READY; |
700 | allocate_stack (prev, 0); |
1817 | --coro_nready; |
701 | else if (prev->cursp != stacklevel |
1818 | |
702 | && prev->stack->usecnt > 1) |
1819 | prepare_schedule_to (aTHX_ ta, next); |
703 | { |
1820 | break; |
704 | prev->gencnt = ++prev->stack->gencnt; |
|
|
705 | prev->stack->usecnt = 1; |
|
|
706 | } |
|
|
707 | |
|
|
708 | /* has our stack been invalidated? */ |
|
|
709 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
710 | { |
|
|
711 | deallocate_stack (next); |
|
|
712 | allocate_stack (next, 1); |
|
|
713 | coro_create (&(next->stack->cctx), |
|
|
714 | continue_coro, (void *)next, |
|
|
715 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
716 | } |
|
|
717 | |
|
|
718 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
719 | prev->cursp = stacklevel; |
|
|
720 | /* don't add any code here */ |
|
|
721 | } |
1821 | } |
722 | else |
|
|
723 | next->cursp = stacklevel; |
|
|
724 | } |
1822 | } |
725 | else if (next->tmps_ix == -2) |
|
|
726 | croak ("tried to transfer to running coroutine"); |
|
|
727 | else |
1823 | else |
728 | { |
1824 | { |
729 | LOCK; |
1825 | /* nothing to schedule: call the idle handler */ |
730 | SAVE (prev, -1); /* first get rid of the old state */ |
1826 | if (SvROK (sv_idle) |
731 | UNLOCK; |
1827 | && SvOBJECT (SvRV (sv_idle))) |
732 | |
|
|
733 | /* create the coroutine for the first time */ |
|
|
734 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
735 | { |
1828 | { |
736 | if (!prev->stack) |
1829 | ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ |
737 | allocate_stack (prev, 0); |
1830 | api_ready (aTHX_ SvRV (sv_idle)); |
738 | |
1831 | --coro_nready; |
739 | /* the new coroutine starts with start_env again */ |
|
|
740 | PL_top_env = &PL_start_env; |
|
|
741 | |
|
|
742 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
743 | { |
|
|
744 | setup_coro (next); |
|
|
745 | next->cursp = stacklevel; |
|
|
746 | |
|
|
747 | prev->stack->refcnt++; |
|
|
748 | prev->stack->usecnt++; |
|
|
749 | next->stack = prev->stack; |
|
|
750 | next->gencnt = prev->gencnt; |
|
|
751 | } |
|
|
752 | else |
|
|
753 | { |
|
|
754 | assert (!next->stack); |
|
|
755 | allocate_stack (next, 1); |
|
|
756 | coro_create (&(next->stack->cctx), |
|
|
757 | setup_coro, (void *)next, |
|
|
758 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
759 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
760 | prev->cursp = stacklevel; |
|
|
761 | /* don't add any code here */ |
|
|
762 | } |
|
|
763 | } |
1832 | } |
764 | else |
1833 | else |
765 | { |
1834 | { |
766 | setup_coro (next); |
1835 | /* TODO: deprecated, remove, cannot work reliably *//*D*/ |
767 | next->cursp = stacklevel; |
1836 | dSP; |
|
|
1837 | |
|
|
1838 | ENTER; |
|
|
1839 | SAVETMPS; |
|
|
1840 | |
|
|
1841 | PUSHMARK (SP); |
|
|
1842 | PUTBACK; |
|
|
1843 | call_sv (sv_idle, G_VOID | G_DISCARD); |
|
|
1844 | |
|
|
1845 | FREETMPS; |
|
|
1846 | LEAVE; |
768 | } |
1847 | } |
769 | } |
1848 | } |
770 | } |
1849 | } |
|
|
1850 | } |
771 | |
1851 | |
772 | LOCK; |
1852 | INLINE void |
|
|
1853 | prepare_cede (pTHX_ struct coro_transfer_args *ta) |
|
|
1854 | { |
|
|
1855 | api_ready (aTHX_ coro_current); |
|
|
1856 | prepare_schedule (aTHX_ ta); |
|
|
1857 | } |
|
|
1858 | |
|
|
1859 | INLINE void |
|
|
1860 | prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
|
|
1861 | { |
|
|
1862 | SV *prev = SvRV (coro_current); |
|
|
1863 | |
773 | if (coro_mortal) |
1864 | if (coro_nready) |
774 | { |
|
|
775 | SvREFCNT_dec (coro_mortal); |
|
|
776 | coro_mortal = 0; |
|
|
777 | } |
1865 | { |
778 | UNLOCK; |
1866 | prepare_schedule (aTHX_ ta); |
779 | } |
1867 | api_ready (aTHX_ prev); |
780 | |
|
|
781 | /* use this function pointer to call the above function */ |
|
|
782 | /* this is done to increase chances of the compiler not inlining the call */ |
|
|
783 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
|
|
784 | |
|
|
785 | #define SV_CORO(sv,func) \ |
|
|
786 | do { \ |
|
|
787 | if (SvROK (sv)) \ |
|
|
788 | sv = SvRV (sv); \ |
|
|
789 | \ |
|
|
790 | if (SvTYPE (sv) == SVt_PVHV && SvSTASH (sv) != coro_state_stash) \ |
|
|
791 | { \ |
|
|
792 | HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
793 | \ |
|
|
794 | if (!he) \ |
|
|
795 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
796 | \ |
|
|
797 | (sv) = SvRV (HeVAL(he)); \ |
|
|
798 | } \ |
|
|
799 | \ |
|
|
800 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
801 | if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ |
|
|
802 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
803 | \ |
|
|
804 | } while(0) |
|
|
805 | |
|
|
806 | static void |
|
|
807 | coro_state_destroy (struct coro *coro) |
|
|
808 | { |
|
|
809 | if (coro->refcnt--) |
|
|
810 | return; |
|
|
811 | |
|
|
812 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
813 | { |
1868 | } |
814 | struct coro temp; |
1869 | else |
|
|
1870 | prepare_nop (aTHX_ ta); |
|
|
1871 | } |
815 | |
1872 | |
816 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
1873 | static void |
817 | LOAD (aTHX_ coro); |
1874 | api_schedule (pTHX) |
|
|
1875 | { |
|
|
1876 | struct coro_transfer_args ta; |
818 | |
1877 | |
819 | destroy_stacks (aTHX); |
1878 | prepare_schedule (aTHX_ &ta); |
|
|
1879 | TRANSFER (ta, 1); |
|
|
1880 | } |
820 | |
1881 | |
821 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
1882 | static void |
|
|
1883 | api_schedule_to (pTHX_ SV *coro_sv) |
|
|
1884 | { |
|
|
1885 | struct coro_transfer_args ta; |
|
|
1886 | struct coro *next = SvSTATE (coro_sv); |
822 | |
1887 | |
823 | coro->mainstack = 0; |
|
|
824 | } |
|
|
825 | |
|
|
826 | deallocate_stack (coro); |
|
|
827 | SvREFCNT_dec (coro->args); |
1888 | SvREFCNT_inc_NN (coro_sv); |
828 | Safefree (coro); |
1889 | prepare_schedule_to (aTHX_ &ta, next); |
829 | } |
1890 | } |
830 | |
1891 | |
831 | static int |
1892 | static int |
832 | coro_state_clear (SV *sv, MAGIC *mg) |
1893 | api_cede (pTHX) |
833 | { |
1894 | { |
|
|
1895 | struct coro_transfer_args ta; |
|
|
1896 | |
|
|
1897 | prepare_cede (aTHX_ &ta); |
|
|
1898 | |
|
|
1899 | if (expect_true (ta.prev != ta.next)) |
|
|
1900 | { |
|
|
1901 | TRANSFER (ta, 1); |
|
|
1902 | return 1; |
|
|
1903 | } |
|
|
1904 | else |
|
|
1905 | return 0; |
|
|
1906 | } |
|
|
1907 | |
|
|
1908 | static int |
|
|
1909 | api_cede_notself (pTHX) |
|
|
1910 | { |
|
|
1911 | if (coro_nready) |
|
|
1912 | { |
|
|
1913 | struct coro_transfer_args ta; |
|
|
1914 | |
|
|
1915 | prepare_cede_notself (aTHX_ &ta); |
|
|
1916 | TRANSFER (ta, 1); |
|
|
1917 | return 1; |
|
|
1918 | } |
|
|
1919 | else |
|
|
1920 | return 0; |
|
|
1921 | } |
|
|
1922 | |
|
|
1923 | static void |
|
|
1924 | api_trace (pTHX_ SV *coro_sv, int flags) |
|
|
1925 | { |
|
|
1926 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1927 | |
|
|
1928 | if (coro->flags & CF_RUNNING) |
|
|
1929 | croak ("cannot enable tracing on a running coroutine, caught"); |
|
|
1930 | |
|
|
1931 | if (flags & CC_TRACE) |
|
|
1932 | { |
|
|
1933 | if (!coro->cctx) |
|
|
1934 | coro->cctx = cctx_new_run (); |
|
|
1935 | else if (!(coro->cctx->flags & CC_TRACE)) |
|
|
1936 | croak ("cannot enable tracing on coroutine with custom stack, caught"); |
|
|
1937 | |
|
|
1938 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
|
|
1939 | } |
|
|
1940 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
|
|
1941 | { |
|
|
1942 | coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
|
|
1943 | |
|
|
1944 | if (coro->flags & CF_RUNNING) |
|
|
1945 | PL_runops = RUNOPS_DEFAULT; |
|
|
1946 | else |
|
|
1947 | coro->slot->runops = RUNOPS_DEFAULT; |
|
|
1948 | } |
|
|
1949 | } |
|
|
1950 | |
|
|
1951 | static void |
|
|
1952 | coro_call_on_destroy (pTHX_ struct coro *coro) |
|
|
1953 | { |
|
|
1954 | SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); |
|
|
1955 | SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0); |
|
|
1956 | |
|
|
1957 | if (on_destroyp) |
|
|
1958 | { |
|
|
1959 | AV *on_destroy = (AV *)SvRV (*on_destroyp); |
|
|
1960 | |
|
|
1961 | while (AvFILLp (on_destroy) >= 0) |
|
|
1962 | { |
|
|
1963 | dSP; /* don't disturb outer sp */ |
|
|
1964 | SV *cb = av_pop (on_destroy); |
|
|
1965 | |
|
|
1966 | PUSHMARK (SP); |
|
|
1967 | |
|
|
1968 | if (statusp) |
|
|
1969 | { |
|
|
1970 | int i; |
|
|
1971 | AV *status = (AV *)SvRV (*statusp); |
|
|
1972 | EXTEND (SP, AvFILLp (status) + 1); |
|
|
1973 | |
|
|
1974 | for (i = 0; i <= AvFILLp (status); ++i) |
|
|
1975 | PUSHs (AvARRAY (status)[i]); |
|
|
1976 | } |
|
|
1977 | |
|
|
1978 | PUTBACK; |
|
|
1979 | call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); |
|
|
1980 | } |
|
|
1981 | } |
|
|
1982 | } |
|
|
1983 | |
|
|
1984 | static void |
|
|
1985 | slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1986 | { |
|
|
1987 | int i; |
|
|
1988 | HV *hv = (HV *)SvRV (coro_current); |
|
|
1989 | AV *av = newAV (); |
|
|
1990 | |
|
|
1991 | /* items are actually not so common, so optimise for this case */ |
|
|
1992 | if (items) |
|
|
1993 | { |
|
|
1994 | av_extend (av, items - 1); |
|
|
1995 | |
|
|
1996 | for (i = 0; i < items; ++i) |
|
|
1997 | av_push (av, SvREFCNT_inc_NN (arg [i])); |
|
|
1998 | } |
|
|
1999 | |
|
|
2000 | hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); |
|
|
2001 | |
|
|
2002 | av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ |
|
|
2003 | api_ready (aTHX_ sv_manager); |
|
|
2004 | |
|
|
2005 | frame->prepare = prepare_schedule; |
|
|
2006 | frame->check = slf_check_repeat; |
|
|
2007 | |
|
|
2008 | /* as a minor optimisation, we could unwind all stacks here */ |
|
|
2009 | /* but that puts extra pressure on pp_slf, and is not worth much */ |
|
|
2010 | /*coro_unwind_stacks (aTHX);*/ |
|
|
2011 | } |
|
|
2012 | |
|
|
2013 | /*****************************************************************************/ |
|
|
2014 | /* async pool handler */ |
|
|
2015 | |
|
|
2016 | static int |
|
|
2017 | slf_check_pool_handler (pTHX_ struct CoroSLF *frame) |
|
|
2018 | { |
|
|
2019 | HV *hv = (HV *)SvRV (coro_current); |
834 | struct coro *coro = (struct coro *)mg->mg_ptr; |
2020 | struct coro *coro = (struct coro *)frame->data; |
835 | mg->mg_ptr = 0; |
|
|
836 | |
2021 | |
837 | coro_state_destroy (coro); |
2022 | if (!coro->invoke_cb) |
|
|
2023 | return 1; /* loop till we have invoke */ |
|
|
2024 | else |
|
|
2025 | { |
|
|
2026 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
2027 | newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
|
|
2028 | |
|
|
2029 | coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
|
|
2030 | |
|
|
2031 | { |
|
|
2032 | dSP; |
|
|
2033 | XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0; |
|
|
2034 | PUTBACK; |
|
|
2035 | } |
|
|
2036 | |
|
|
2037 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
2038 | GvAV (PL_defgv) = coro->invoke_av; |
|
|
2039 | coro->invoke_av = 0; |
|
|
2040 | |
|
|
2041 | return 0; |
|
|
2042 | } |
|
|
2043 | } |
|
|
2044 | |
|
|
2045 | static void |
|
|
2046 | slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2047 | { |
|
|
2048 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2049 | struct coro *coro = SvSTATE_hv ((SV *)hv); |
|
|
2050 | |
|
|
2051 | if (expect_true (coro->saved_deffh)) |
|
|
2052 | { |
|
|
2053 | /* subsequent iteration */ |
|
|
2054 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
|
|
2055 | coro->saved_deffh = 0; |
|
|
2056 | |
|
|
2057 | if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
|
|
2058 | || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
|
|
2059 | { |
|
|
2060 | coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); |
|
|
2061 | coro->invoke_av = newAV (); |
|
|
2062 | |
|
|
2063 | frame->prepare = prepare_nop; |
|
|
2064 | } |
|
|
2065 | else |
|
|
2066 | { |
|
|
2067 | av_clear (GvAV (PL_defgv)); |
|
|
2068 | hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); |
|
|
2069 | |
|
|
2070 | coro->prio = 0; |
|
|
2071 | |
|
|
2072 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
|
|
2073 | api_trace (aTHX_ coro_current, 0); |
|
|
2074 | |
|
|
2075 | frame->prepare = prepare_schedule; |
|
|
2076 | av_push (av_async_pool, SvREFCNT_inc (hv)); |
|
|
2077 | } |
|
|
2078 | } |
|
|
2079 | else |
|
|
2080 | { |
|
|
2081 | /* first iteration, simply fall through */ |
|
|
2082 | frame->prepare = prepare_nop; |
|
|
2083 | } |
|
|
2084 | |
|
|
2085 | frame->check = slf_check_pool_handler; |
|
|
2086 | frame->data = (void *)coro; |
|
|
2087 | } |
|
|
2088 | |
|
|
2089 | /*****************************************************************************/ |
|
|
2090 | /* rouse callback */ |
|
|
2091 | |
|
|
2092 | #define CORO_MAGIC_type_rouse PERL_MAGIC_ext |
|
|
2093 | |
|
|
2094 | static void |
|
|
2095 | coro_rouse_callback (pTHX_ CV *cv) |
|
|
2096 | { |
|
|
2097 | dXSARGS; |
|
|
2098 | SV *data = (SV *)S_GENSUB_ARG; |
|
|
2099 | |
|
|
2100 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
2101 | { |
|
|
2102 | /* first call, set args */ |
|
|
2103 | SV *coro = SvRV (data); |
|
|
2104 | AV *av = newAV (); |
|
|
2105 | |
|
|
2106 | SvRV_set (data, (SV *)av); |
|
|
2107 | |
|
|
2108 | /* better take a full copy of the arguments */ |
|
|
2109 | while (items--) |
|
|
2110 | av_store (av, items, newSVsv (ST (items))); |
|
|
2111 | |
|
|
2112 | api_ready (aTHX_ coro); |
|
|
2113 | SvREFCNT_dec (coro); |
|
|
2114 | } |
|
|
2115 | |
|
|
2116 | XSRETURN_EMPTY; |
|
|
2117 | } |
|
|
2118 | |
|
|
2119 | static int |
|
|
2120 | slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) |
|
|
2121 | { |
|
|
2122 | SV *data = (SV *)frame->data; |
|
|
2123 | |
|
|
2124 | if (CORO_THROW) |
|
|
2125 | return 0; |
|
|
2126 | |
|
|
2127 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
2128 | return 1; |
|
|
2129 | |
|
|
2130 | /* now push all results on the stack */ |
|
|
2131 | { |
|
|
2132 | dSP; |
|
|
2133 | AV *av = (AV *)SvRV (data); |
|
|
2134 | int i; |
|
|
2135 | |
|
|
2136 | EXTEND (SP, AvFILLp (av) + 1); |
|
|
2137 | for (i = 0; i <= AvFILLp (av); ++i) |
|
|
2138 | PUSHs (sv_2mortal (AvARRAY (av)[i])); |
|
|
2139 | |
|
|
2140 | /* we have stolen the elements, so set length to zero and free */ |
|
|
2141 | AvFILLp (av) = -1; |
|
|
2142 | av_undef (av); |
|
|
2143 | |
|
|
2144 | PUTBACK; |
|
|
2145 | } |
838 | |
2146 | |
839 | return 0; |
2147 | return 0; |
840 | } |
2148 | } |
841 | |
2149 | |
|
|
2150 | static void |
|
|
2151 | slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2152 | { |
|
|
2153 | SV *cb; |
|
|
2154 | |
|
|
2155 | if (items) |
|
|
2156 | cb = arg [0]; |
|
|
2157 | else |
|
|
2158 | { |
|
|
2159 | struct coro *coro = SvSTATE_current; |
|
|
2160 | |
|
|
2161 | if (!coro->rouse_cb) |
|
|
2162 | croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,"); |
|
|
2163 | |
|
|
2164 | cb = sv_2mortal (coro->rouse_cb); |
|
|
2165 | coro->rouse_cb = 0; |
|
|
2166 | } |
|
|
2167 | |
|
|
2168 | if (!SvROK (cb) |
|
|
2169 | || SvTYPE (SvRV (cb)) != SVt_PVCV |
|
|
2170 | || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) |
|
|
2171 | croak ("Coro::rouse_wait called with illegal callback argument,"); |
|
|
2172 | |
|
|
2173 | { |
|
|
2174 | CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */ |
|
|
2175 | SV *data = (SV *)S_GENSUB_ARG; |
|
|
2176 | |
|
|
2177 | frame->data = (void *)data; |
|
|
2178 | frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; |
|
|
2179 | frame->check = slf_check_rouse_wait; |
|
|
2180 | } |
|
|
2181 | } |
|
|
2182 | |
|
|
2183 | static SV * |
|
|
2184 | coro_new_rouse_cb (pTHX) |
|
|
2185 | { |
|
|
2186 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2187 | struct coro *coro = SvSTATE_hv (hv); |
|
|
2188 | SV *data = newRV_inc ((SV *)hv); |
|
|
2189 | SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data); |
|
|
2190 | |
|
|
2191 | sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); |
|
|
2192 | SvREFCNT_dec (data); /* magicext increases the refcount */ |
|
|
2193 | |
|
|
2194 | SvREFCNT_dec (coro->rouse_cb); |
|
|
2195 | coro->rouse_cb = SvREFCNT_inc_NN (cb); |
|
|
2196 | |
|
|
2197 | return cb; |
|
|
2198 | } |
|
|
2199 | |
|
|
2200 | /*****************************************************************************/ |
|
|
2201 | /* schedule-like-function opcode (SLF) */ |
|
|
2202 | |
|
|
2203 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
2204 | static const CV *slf_cv; |
|
|
2205 | static SV **slf_argv; |
|
|
2206 | static int slf_argc, slf_arga; /* count, allocated */ |
|
|
2207 | static I32 slf_ax; /* top of stack, for restore */ |
|
|
2208 | |
|
|
2209 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
2210 | /* recreate the stack frame as perl will on following calls */ |
|
|
2211 | /* since entersub cleared the stack */ |
|
|
2212 | static OP * |
|
|
2213 | pp_restore (pTHX) |
|
|
2214 | { |
|
|
2215 | int i; |
|
|
2216 | SV **SP = PL_stack_base + slf_ax; |
|
|
2217 | |
|
|
2218 | PUSHMARK (SP); |
|
|
2219 | |
|
|
2220 | EXTEND (SP, slf_argc + 1); |
|
|
2221 | |
|
|
2222 | for (i = 0; i < slf_argc; ++i) |
|
|
2223 | PUSHs (sv_2mortal (slf_argv [i])); |
|
|
2224 | |
|
|
2225 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
2226 | |
|
|
2227 | RETURNOP (slf_restore.op_first); |
|
|
2228 | } |
|
|
2229 | |
|
|
2230 | static void |
|
|
2231 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
2232 | { |
|
|
2233 | SV **arg = (SV **)slf_frame.data; |
|
|
2234 | |
|
|
2235 | prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
|
|
2236 | } |
|
|
2237 | |
|
|
2238 | static void |
|
|
2239 | slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2240 | { |
|
|
2241 | if (items != 2) |
|
|
2242 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
|
|
2243 | |
|
|
2244 | frame->prepare = slf_prepare_transfer; |
|
|
2245 | frame->check = slf_check_nop; |
|
|
2246 | frame->data = (void *)arg; /* let's hope it will stay valid */ |
|
|
2247 | } |
|
|
2248 | |
|
|
2249 | static void |
|
|
2250 | slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2251 | { |
|
|
2252 | frame->prepare = prepare_schedule; |
|
|
2253 | frame->check = slf_check_nop; |
|
|
2254 | } |
|
|
2255 | |
|
|
2256 | static void |
|
|
2257 | slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta) |
|
|
2258 | { |
|
|
2259 | struct coro *next = (struct coro *)slf_frame.data; |
|
|
2260 | |
|
|
2261 | SvREFCNT_inc_NN (next->hv); |
|
|
2262 | prepare_schedule_to (aTHX_ ta, next); |
|
|
2263 | } |
|
|
2264 | |
|
|
2265 | static void |
|
|
2266 | slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2267 | { |
|
|
2268 | if (!items) |
|
|
2269 | croak ("Coro::schedule_to expects a coroutine argument, caught"); |
|
|
2270 | |
|
|
2271 | frame->data = (void *)SvSTATE (arg [0]); |
|
|
2272 | frame->prepare = slf_prepare_schedule_to; |
|
|
2273 | frame->check = slf_check_nop; |
|
|
2274 | } |
|
|
2275 | |
|
|
2276 | static void |
|
|
2277 | slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2278 | { |
|
|
2279 | api_ready (aTHX_ SvRV (coro_current)); |
|
|
2280 | |
|
|
2281 | slf_init_schedule_to (aTHX_ frame, cv, arg, items); |
|
|
2282 | } |
|
|
2283 | |
|
|
2284 | static void |
|
|
2285 | slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2286 | { |
|
|
2287 | frame->prepare = prepare_cede; |
|
|
2288 | frame->check = slf_check_nop; |
|
|
2289 | } |
|
|
2290 | |
|
|
2291 | static void |
|
|
2292 | slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2293 | { |
|
|
2294 | frame->prepare = prepare_cede_notself; |
|
|
2295 | frame->check = slf_check_nop; |
|
|
2296 | } |
|
|
2297 | |
|
|
2298 | /* |
|
|
2299 | * these not obviously related functions are all rolled into one |
|
|
2300 | * function to increase chances that they all will call transfer with the same |
|
|
2301 | * stack offset |
|
|
2302 | * SLF stands for "schedule-like-function". |
|
|
2303 | */ |
|
|
2304 | static OP * |
|
|
2305 | pp_slf (pTHX) |
|
|
2306 | { |
|
|
2307 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
2308 | |
|
|
2309 | /* set up the slf frame, unless it has already been set-up */ |
|
|
2310 | /* the latter happens when a new coro has been started */ |
|
|
2311 | /* or when a new cctx was attached to an existing coroutine */ |
|
|
2312 | if (expect_true (!slf_frame.prepare)) |
|
|
2313 | { |
|
|
2314 | /* first iteration */ |
|
|
2315 | dSP; |
|
|
2316 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
2317 | int items = SP - arg; /* args without function object */ |
|
|
2318 | SV *gv = *sp; |
|
|
2319 | |
|
|
2320 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
2321 | /* for us, divert to the real entersub */ |
|
|
2322 | if (SvTYPE (gv) != SVt_PVGV |
|
|
2323 | || !GvCV (gv) |
|
|
2324 | || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
2325 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
2326 | |
|
|
2327 | if (!(PL_op->op_flags & OPf_STACKED)) |
|
|
2328 | { |
|
|
2329 | /* ampersand-form of call, use @_ instead of stack */ |
|
|
2330 | AV *av = GvAV (PL_defgv); |
|
|
2331 | arg = AvARRAY (av); |
|
|
2332 | items = AvFILLp (av) + 1; |
|
|
2333 | } |
|
|
2334 | |
|
|
2335 | /* now call the init function, which needs to set up slf_frame */ |
|
|
2336 | ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
|
|
2337 | (aTHX_ &slf_frame, GvCV (gv), arg, items); |
|
|
2338 | |
|
|
2339 | /* pop args */ |
|
|
2340 | SP = PL_stack_base + POPMARK; |
|
|
2341 | |
|
|
2342 | PUTBACK; |
|
|
2343 | } |
|
|
2344 | |
|
|
2345 | /* now that we have a slf_frame, interpret it! */ |
|
|
2346 | /* we use a callback system not to make the code needlessly */ |
|
|
2347 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
2348 | |
|
|
2349 | do |
|
|
2350 | { |
|
|
2351 | struct coro_transfer_args ta; |
|
|
2352 | |
|
|
2353 | slf_frame.prepare (aTHX_ &ta); |
|
|
2354 | TRANSFER (ta, 0); |
|
|
2355 | |
|
|
2356 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
2357 | } |
|
|
2358 | while (slf_frame.check (aTHX_ &slf_frame)); |
|
|
2359 | |
|
|
2360 | slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
|
|
2361 | |
|
|
2362 | /* exception handling */ |
|
|
2363 | if (expect_false (CORO_THROW)) |
|
|
2364 | { |
|
|
2365 | SV *exception = sv_2mortal (CORO_THROW); |
|
|
2366 | |
|
|
2367 | CORO_THROW = 0; |
|
|
2368 | sv_setsv (ERRSV, exception); |
|
|
2369 | croak (0); |
|
|
2370 | } |
|
|
2371 | |
|
|
2372 | /* return value handling - mostly like entersub */ |
|
|
2373 | /* make sure we put something on the stack in scalar context */ |
|
|
2374 | if (GIMME_V == G_SCALAR) |
|
|
2375 | { |
|
|
2376 | dSP; |
|
|
2377 | SV **bot = PL_stack_base + checkmark; |
|
|
2378 | |
|
|
2379 | if (sp == bot) /* too few, push undef */ |
|
|
2380 | bot [1] = &PL_sv_undef; |
|
|
2381 | else if (sp != bot + 1) /* too many, take last one */ |
|
|
2382 | bot [1] = *sp; |
|
|
2383 | |
|
|
2384 | SP = bot + 1; |
|
|
2385 | |
|
|
2386 | PUTBACK; |
|
|
2387 | } |
|
|
2388 | |
|
|
2389 | return NORMAL; |
|
|
2390 | } |
|
|
2391 | |
|
|
2392 | static void |
|
|
2393 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
|
|
2394 | { |
|
|
2395 | int i; |
|
|
2396 | SV **arg = PL_stack_base + ax; |
|
|
2397 | int items = PL_stack_sp - arg + 1; |
|
|
2398 | |
|
|
2399 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
2400 | |
|
|
2401 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
2402 | && PL_op->op_ppaddr != pp_slf) |
|
|
2403 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
|
|
2404 | |
|
|
2405 | CvFLAGS (cv) |= CVf_SLF; |
|
|
2406 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
2407 | slf_cv = cv; |
|
|
2408 | |
|
|
2409 | /* we patch the op, and then re-run the whole call */ |
|
|
2410 | /* we have to put the same argument on the stack for this to work */ |
|
|
2411 | /* and this will be done by pp_restore */ |
|
|
2412 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
2413 | slf_restore.op_type = OP_CUSTOM; |
|
|
2414 | slf_restore.op_ppaddr = pp_restore; |
|
|
2415 | slf_restore.op_first = PL_op; |
|
|
2416 | |
|
|
2417 | slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
|
|
2418 | |
|
|
2419 | if (PL_op->op_flags & OPf_STACKED) |
|
|
2420 | { |
|
|
2421 | if (items > slf_arga) |
|
|
2422 | { |
|
|
2423 | slf_arga = items; |
|
|
2424 | free (slf_argv); |
|
|
2425 | slf_argv = malloc (slf_arga * sizeof (SV *)); |
|
|
2426 | } |
|
|
2427 | |
|
|
2428 | slf_argc = items; |
|
|
2429 | |
|
|
2430 | for (i = 0; i < items; ++i) |
|
|
2431 | slf_argv [i] = SvREFCNT_inc (arg [i]); |
|
|
2432 | } |
|
|
2433 | else |
|
|
2434 | slf_argc = 0; |
|
|
2435 | |
|
|
2436 | PL_op->op_ppaddr = pp_slf; |
|
|
2437 | /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */ |
|
|
2438 | |
|
|
2439 | PL_op = (OP *)&slf_restore; |
|
|
2440 | } |
|
|
2441 | |
|
|
2442 | /*****************************************************************************/ |
|
|
2443 | /* dynamic wind */ |
|
|
2444 | |
|
|
2445 | static void |
|
|
2446 | on_enterleave_call (pTHX_ SV *cb) |
|
|
2447 | { |
|
|
2448 | dSP; |
|
|
2449 | |
|
|
2450 | PUSHSTACK; |
|
|
2451 | |
|
|
2452 | PUSHMARK (SP); |
|
|
2453 | PUTBACK; |
|
|
2454 | call_sv (cb, G_VOID | G_DISCARD); |
|
|
2455 | SPAGAIN; |
|
|
2456 | |
|
|
2457 | POPSTACK; |
|
|
2458 | } |
|
|
2459 | |
|
|
2460 | static SV * |
|
|
2461 | coro_avp_pop_and_free (pTHX_ AV **avp) |
|
|
2462 | { |
|
|
2463 | AV *av = *avp; |
|
|
2464 | SV *res = av_pop (av); |
|
|
2465 | |
|
|
2466 | if (AvFILLp (av) < 0) |
|
|
2467 | { |
|
|
2468 | *avp = 0; |
|
|
2469 | SvREFCNT_dec (av); |
|
|
2470 | } |
|
|
2471 | |
|
|
2472 | return res; |
|
|
2473 | } |
|
|
2474 | |
|
|
2475 | static void |
|
|
2476 | coro_pop_on_enter (pTHX_ void *coro) |
|
|
2477 | { |
|
|
2478 | SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter); |
|
|
2479 | SvREFCNT_dec (cb); |
|
|
2480 | } |
|
|
2481 | |
|
|
2482 | static void |
|
|
2483 | coro_pop_on_leave (pTHX_ void *coro) |
|
|
2484 | { |
|
|
2485 | SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave); |
|
|
2486 | on_enterleave_call (aTHX_ sv_2mortal (cb)); |
|
|
2487 | } |
|
|
2488 | |
|
|
2489 | /*****************************************************************************/ |
|
|
2490 | /* PerlIO::cede */ |
|
|
2491 | |
|
|
2492 | typedef struct |
|
|
2493 | { |
|
|
2494 | PerlIOBuf base; |
|
|
2495 | NV next, every; |
|
|
2496 | } PerlIOCede; |
|
|
2497 | |
|
|
2498 | static IV |
|
|
2499 | PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
|
|
2500 | { |
|
|
2501 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2502 | |
|
|
2503 | self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
|
|
2504 | self->next = nvtime () + self->every; |
|
|
2505 | |
|
|
2506 | return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
|
|
2507 | } |
|
|
2508 | |
|
|
2509 | static SV * |
|
|
2510 | PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
|
|
2511 | { |
|
|
2512 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2513 | |
|
|
2514 | return newSVnv (self->every); |
|
|
2515 | } |
|
|
2516 | |
|
|
2517 | static IV |
|
|
2518 | PerlIOCede_flush (pTHX_ PerlIO *f) |
|
|
2519 | { |
|
|
2520 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2521 | double now = nvtime (); |
|
|
2522 | |
|
|
2523 | if (now >= self->next) |
|
|
2524 | { |
|
|
2525 | api_cede (aTHX); |
|
|
2526 | self->next = now + self->every; |
|
|
2527 | } |
|
|
2528 | |
|
|
2529 | return PerlIOBuf_flush (aTHX_ f); |
|
|
2530 | } |
|
|
2531 | |
|
|
2532 | static PerlIO_funcs PerlIO_cede = |
|
|
2533 | { |
|
|
2534 | sizeof(PerlIO_funcs), |
|
|
2535 | "cede", |
|
|
2536 | sizeof(PerlIOCede), |
|
|
2537 | PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
|
|
2538 | PerlIOCede_pushed, |
|
|
2539 | PerlIOBuf_popped, |
|
|
2540 | PerlIOBuf_open, |
|
|
2541 | PerlIOBase_binmode, |
|
|
2542 | PerlIOCede_getarg, |
|
|
2543 | PerlIOBase_fileno, |
|
|
2544 | PerlIOBuf_dup, |
|
|
2545 | PerlIOBuf_read, |
|
|
2546 | PerlIOBuf_unread, |
|
|
2547 | PerlIOBuf_write, |
|
|
2548 | PerlIOBuf_seek, |
|
|
2549 | PerlIOBuf_tell, |
|
|
2550 | PerlIOBuf_close, |
|
|
2551 | PerlIOCede_flush, |
|
|
2552 | PerlIOBuf_fill, |
|
|
2553 | PerlIOBase_eof, |
|
|
2554 | PerlIOBase_error, |
|
|
2555 | PerlIOBase_clearerr, |
|
|
2556 | PerlIOBase_setlinebuf, |
|
|
2557 | PerlIOBuf_get_base, |
|
|
2558 | PerlIOBuf_bufsiz, |
|
|
2559 | PerlIOBuf_get_ptr, |
|
|
2560 | PerlIOBuf_get_cnt, |
|
|
2561 | PerlIOBuf_set_ptrcnt, |
|
|
2562 | }; |
|
|
2563 | |
|
|
2564 | /*****************************************************************************/ |
|
|
2565 | /* Coro::Semaphore & Coro::Signal */ |
|
|
2566 | |
|
|
2567 | static SV * |
|
|
2568 | coro_waitarray_new (pTHX_ int count) |
|
|
2569 | { |
|
|
2570 | /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
|
|
2571 | AV *av = newAV (); |
|
|
2572 | SV **ary; |
|
|
2573 | |
|
|
2574 | /* unfortunately, building manually saves memory */ |
|
|
2575 | Newx (ary, 2, SV *); |
|
|
2576 | AvALLOC (av) = ary; |
|
|
2577 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
2578 | AvARRAY (av) = ary; |
|
|
2579 | #else |
|
|
2580 | /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */ |
|
|
2581 | /* -DDEBUGGING flags this as a bug, despite it perfectly working */ |
|
|
2582 | SvPVX ((SV *)av) = (char *)ary; |
|
|
2583 | #endif |
|
|
2584 | AvMAX (av) = 1; |
|
|
2585 | AvFILLp (av) = 0; |
|
|
2586 | ary [0] = newSViv (count); |
|
|
2587 | |
|
|
2588 | return newRV_noinc ((SV *)av); |
|
|
2589 | } |
|
|
2590 | |
|
|
2591 | /* semaphore */ |
|
|
2592 | |
|
|
2593 | static void |
|
|
2594 | coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
|
|
2595 | { |
|
|
2596 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2597 | IV count = SvIVX (count_sv); |
|
|
2598 | |
|
|
2599 | count += adjust; |
|
|
2600 | SvIVX (count_sv) = count; |
|
|
2601 | |
|
|
2602 | /* now wake up as many waiters as are expected to lock */ |
|
|
2603 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2604 | { |
|
|
2605 | SV *cb; |
|
|
2606 | |
|
|
2607 | /* swap first two elements so we can shift a waiter */ |
|
|
2608 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2609 | AvARRAY (av)[1] = count_sv; |
|
|
2610 | cb = av_shift (av); |
|
|
2611 | |
|
|
2612 | if (SvOBJECT (cb)) |
|
|
2613 | { |
|
|
2614 | api_ready (aTHX_ cb); |
|
|
2615 | --count; |
|
|
2616 | } |
|
|
2617 | else if (SvTYPE (cb) == SVt_PVCV) |
|
|
2618 | { |
|
|
2619 | dSP; |
|
|
2620 | PUSHMARK (SP); |
|
|
2621 | XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
|
|
2622 | PUTBACK; |
|
|
2623 | call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
|
|
2624 | } |
|
|
2625 | |
|
|
2626 | SvREFCNT_dec (cb); |
|
|
2627 | } |
|
|
2628 | } |
|
|
2629 | |
|
|
2630 | static void |
|
|
2631 | coro_semaphore_on_destroy (pTHX_ struct coro *coro) |
|
|
2632 | { |
|
|
2633 | /* call $sem->adjust (0) to possibly wake up some other waiters */ |
|
|
2634 | coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
|
|
2635 | } |
|
|
2636 | |
842 | static int |
2637 | static int |
843 | coro_state_dup (MAGIC *mg, CLONE_PARAMS *params) |
2638 | slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) |
844 | { |
2639 | { |
845 | struct coro *coro = (struct coro *)mg->mg_ptr; |
2640 | AV *av = (AV *)frame->data; |
|
|
2641 | SV *count_sv = AvARRAY (av)[0]; |
846 | |
2642 | |
847 | ++coro->refcnt; |
2643 | /* if we are about to throw, don't actually acquire the lock, just throw */ |
|
|
2644 | if (CORO_THROW) |
|
|
2645 | return 0; |
|
|
2646 | else if (SvIVX (count_sv) > 0) |
|
|
2647 | { |
|
|
2648 | SvSTATE_current->on_destroy = 0; |
|
|
2649 | |
|
|
2650 | if (acquire) |
|
|
2651 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
|
|
2652 | else |
|
|
2653 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2654 | |
|
|
2655 | return 0; |
|
|
2656 | } |
|
|
2657 | else |
|
|
2658 | { |
|
|
2659 | int i; |
|
|
2660 | /* if we were woken up but can't down, we look through the whole */ |
|
|
2661 | /* waiters list and only add us if we aren't in there already */ |
|
|
2662 | /* this avoids some degenerate memory usage cases */ |
|
|
2663 | |
|
|
2664 | for (i = 1; i <= AvFILLp (av); ++i) |
|
|
2665 | if (AvARRAY (av)[i] == SvRV (coro_current)) |
|
|
2666 | return 1; |
|
|
2667 | |
|
|
2668 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2669 | return 1; |
|
|
2670 | } |
|
|
2671 | } |
|
|
2672 | |
|
|
2673 | static int |
|
|
2674 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
|
|
2675 | { |
|
|
2676 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 1); |
|
|
2677 | } |
|
|
2678 | |
|
|
2679 | static int |
|
|
2680 | slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame) |
|
|
2681 | { |
|
|
2682 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 0); |
|
|
2683 | } |
|
|
2684 | |
|
|
2685 | static void |
|
|
2686 | slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2687 | { |
|
|
2688 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2689 | |
|
|
2690 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2691 | { |
|
|
2692 | frame->data = (void *)av; |
|
|
2693 | frame->prepare = prepare_nop; |
|
|
2694 | } |
|
|
2695 | else |
|
|
2696 | { |
|
|
2697 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2698 | |
|
|
2699 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
|
|
2700 | frame->prepare = prepare_schedule; |
|
|
2701 | |
|
|
2702 | /* to avoid race conditions when a woken-up coro gets terminated */ |
|
|
2703 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
|
|
2704 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
|
|
2705 | } |
|
|
2706 | } |
|
|
2707 | |
|
|
2708 | static void |
|
|
2709 | slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2710 | { |
|
|
2711 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
2712 | frame->check = slf_check_semaphore_down; |
|
|
2713 | } |
|
|
2714 | |
|
|
2715 | static void |
|
|
2716 | slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2717 | { |
|
|
2718 | if (items >= 2) |
|
|
2719 | { |
|
|
2720 | /* callback form */ |
|
|
2721 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2722 | SV *cb_cv = s_get_cv_croak (arg [1]); |
|
|
2723 | |
|
|
2724 | av_push (av, SvREFCNT_inc_NN (cb_cv)); |
|
|
2725 | |
|
|
2726 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2727 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2728 | |
|
|
2729 | frame->prepare = prepare_nop; |
|
|
2730 | frame->check = slf_check_nop; |
|
|
2731 | } |
|
|
2732 | else |
|
|
2733 | { |
|
|
2734 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
2735 | frame->check = slf_check_semaphore_wait; |
|
|
2736 | } |
|
|
2737 | } |
|
|
2738 | |
|
|
2739 | /* signal */ |
|
|
2740 | |
|
|
2741 | static void |
|
|
2742 | coro_signal_wake (pTHX_ AV *av, int count) |
|
|
2743 | { |
|
|
2744 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2745 | |
|
|
2746 | /* now signal count waiters */ |
|
|
2747 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2748 | { |
|
|
2749 | SV *cb; |
|
|
2750 | |
|
|
2751 | /* swap first two elements so we can shift a waiter */ |
|
|
2752 | cb = AvARRAY (av)[0]; |
|
|
2753 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2754 | AvARRAY (av)[1] = cb; |
|
|
2755 | |
|
|
2756 | cb = av_shift (av); |
|
|
2757 | |
|
|
2758 | if (SvTYPE (cb) == SVt_PVCV) |
|
|
2759 | { |
|
|
2760 | dSP; |
|
|
2761 | PUSHMARK (SP); |
|
|
2762 | XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
|
|
2763 | PUTBACK; |
|
|
2764 | call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
|
|
2765 | } |
|
|
2766 | else |
|
|
2767 | { |
|
|
2768 | api_ready (aTHX_ cb); |
|
|
2769 | sv_setiv (cb, 0); /* signal waiter */ |
|
|
2770 | } |
|
|
2771 | |
|
|
2772 | SvREFCNT_dec (cb); |
|
|
2773 | |
|
|
2774 | --count; |
|
|
2775 | } |
|
|
2776 | } |
|
|
2777 | |
|
|
2778 | static int |
|
|
2779 | slf_check_signal_wait (pTHX_ struct CoroSLF *frame) |
|
|
2780 | { |
|
|
2781 | /* if we are about to throw, also stop waiting */ |
|
|
2782 | return SvROK ((SV *)frame->data) && !CORO_THROW; |
|
|
2783 | } |
|
|
2784 | |
|
|
2785 | static void |
|
|
2786 | slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2787 | { |
|
|
2788 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2789 | |
|
|
2790 | if (items >= 2) |
|
|
2791 | { |
|
|
2792 | SV *cb_cv = s_get_cv_croak (arg [1]); |
|
|
2793 | av_push (av, SvREFCNT_inc_NN (cb_cv)); |
|
|
2794 | |
|
|
2795 | if (SvIVX (AvARRAY (av)[0])) |
|
|
2796 | coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */ |
|
|
2797 | |
|
|
2798 | frame->prepare = prepare_nop; |
|
|
2799 | frame->check = slf_check_nop; |
|
|
2800 | } |
|
|
2801 | else if (SvIVX (AvARRAY (av)[0])) |
|
|
2802 | { |
|
|
2803 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2804 | frame->prepare = prepare_nop; |
|
|
2805 | frame->check = slf_check_nop; |
|
|
2806 | } |
|
|
2807 | else |
|
|
2808 | { |
|
|
2809 | SV *waiter = newSVsv (coro_current); /* owned by signal av */ |
|
|
2810 | |
|
|
2811 | av_push (av, waiter); |
|
|
2812 | |
|
|
2813 | frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ |
|
|
2814 | frame->prepare = prepare_schedule; |
|
|
2815 | frame->check = slf_check_signal_wait; |
|
|
2816 | } |
|
|
2817 | } |
|
|
2818 | |
|
|
2819 | /*****************************************************************************/ |
|
|
2820 | /* Coro::AIO */ |
|
|
2821 | |
|
|
2822 | #define CORO_MAGIC_type_aio PERL_MAGIC_ext |
|
|
2823 | |
|
|
2824 | /* helper storage struct */ |
|
|
2825 | struct io_state |
|
|
2826 | { |
|
|
2827 | int errorno; |
|
|
2828 | I32 laststype; /* U16 in 5.10.0 */ |
|
|
2829 | int laststatval; |
|
|
2830 | Stat_t statcache; |
|
|
2831 | }; |
|
|
2832 | |
|
|
2833 | static void |
|
|
2834 | coro_aio_callback (pTHX_ CV *cv) |
|
|
2835 | { |
|
|
2836 | dXSARGS; |
|
|
2837 | AV *state = (AV *)S_GENSUB_ARG; |
|
|
2838 | SV *coro = av_pop (state); |
|
|
2839 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
2840 | |
|
|
2841 | av_extend (state, items - 1); |
|
|
2842 | |
|
|
2843 | sv_upgrade (data_sv, SVt_PV); |
|
|
2844 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
2845 | SvPOK_only (data_sv); |
|
|
2846 | |
|
|
2847 | { |
|
|
2848 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2849 | |
|
|
2850 | data->errorno = errno; |
|
|
2851 | data->laststype = PL_laststype; |
|
|
2852 | data->laststatval = PL_laststatval; |
|
|
2853 | data->statcache = PL_statcache; |
|
|
2854 | } |
|
|
2855 | |
|
|
2856 | /* now build the result vector out of all the parameters and the data_sv */ |
|
|
2857 | { |
|
|
2858 | int i; |
|
|
2859 | |
|
|
2860 | for (i = 0; i < items; ++i) |
|
|
2861 | av_push (state, SvREFCNT_inc_NN (ST (i))); |
|
|
2862 | } |
|
|
2863 | |
|
|
2864 | av_push (state, data_sv); |
|
|
2865 | |
|
|
2866 | api_ready (aTHX_ coro); |
|
|
2867 | SvREFCNT_dec (coro); |
|
|
2868 | SvREFCNT_dec ((AV *)state); |
|
|
2869 | } |
|
|
2870 | |
|
|
2871 | static int |
|
|
2872 | slf_check_aio_req (pTHX_ struct CoroSLF *frame) |
|
|
2873 | { |
|
|
2874 | AV *state = (AV *)frame->data; |
|
|
2875 | |
|
|
2876 | /* if we are about to throw, return early */ |
|
|
2877 | /* this does not cancel the aio request, but at least */ |
|
|
2878 | /* it quickly returns */ |
|
|
2879 | if (CORO_THROW) |
|
|
2880 | return 0; |
|
|
2881 | |
|
|
2882 | /* one element that is an RV? repeat! */ |
|
|
2883 | if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) |
|
|
2884 | return 1; |
|
|
2885 | |
|
|
2886 | /* restore status */ |
|
|
2887 | { |
|
|
2888 | SV *data_sv = av_pop (state); |
|
|
2889 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2890 | |
|
|
2891 | errno = data->errorno; |
|
|
2892 | PL_laststype = data->laststype; |
|
|
2893 | PL_laststatval = data->laststatval; |
|
|
2894 | PL_statcache = data->statcache; |
|
|
2895 | |
|
|
2896 | SvREFCNT_dec (data_sv); |
|
|
2897 | } |
|
|
2898 | |
|
|
2899 | /* push result values */ |
|
|
2900 | { |
|
|
2901 | dSP; |
|
|
2902 | int i; |
|
|
2903 | |
|
|
2904 | EXTEND (SP, AvFILLp (state) + 1); |
|
|
2905 | for (i = 0; i <= AvFILLp (state); ++i) |
|
|
2906 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i]))); |
|
|
2907 | |
|
|
2908 | PUTBACK; |
|
|
2909 | } |
848 | |
2910 | |
849 | return 0; |
2911 | return 0; |
850 | } |
2912 | } |
851 | |
2913 | |
852 | static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 }; |
|
|
853 | |
|
|
854 | static struct coro * |
|
|
855 | SvSTATE (SV *coro) |
|
|
856 | { |
|
|
857 | MAGIC *mg = SvMAGIC (SvROK (coro) ? SvRV (coro) : coro); |
|
|
858 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
859 | return (struct coro *)mg->mg_ptr; |
|
|
860 | } |
|
|
861 | |
|
|
862 | static void |
2914 | static void |
863 | api_transfer (pTHX_ SV *prev, SV *next, int flags) |
2915 | slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
864 | { |
2916 | { |
865 | SV_CORO (prev, "Coro::transfer"); |
2917 | AV *state = (AV *)sv_2mortal ((SV *)newAV ()); |
866 | SV_CORO (next, "Coro::transfer"); |
2918 | SV *coro_hv = SvRV (coro_current); |
|
|
2919 | struct coro *coro = SvSTATE_hv (coro_hv); |
867 | |
2920 | |
868 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
2921 | /* put our coroutine id on the state arg */ |
869 | } |
2922 | av_push (state, SvREFCNT_inc_NN (coro_hv)); |
870 | |
2923 | |
871 | /** Coro ********************************************************************/ |
2924 | /* first see whether we have a non-zero priority and set it as AIO prio */ |
|
|
2925 | if (coro->prio) |
|
|
2926 | { |
|
|
2927 | dSP; |
872 | |
2928 | |
873 | #define PRIO_MAX 3 |
2929 | static SV *prio_cv; |
874 | #define PRIO_HIGH 1 |
2930 | static SV *prio_sv; |
875 | #define PRIO_NORMAL 0 |
|
|
876 | #define PRIO_LOW -1 |
|
|
877 | #define PRIO_IDLE -3 |
|
|
878 | #define PRIO_MIN -4 |
|
|
879 | |
2931 | |
880 | /* for Coro.pm */ |
2932 | if (expect_false (!prio_cv)) |
881 | static GV *coro_current, *coro_idle; |
2933 | { |
882 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
2934 | prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); |
883 | static int coro_nready; |
2935 | prio_sv = newSViv (0); |
|
|
2936 | } |
884 | |
2937 | |
885 | static void |
2938 | PUSHMARK (SP); |
886 | coro_enq (pTHX_ SV *sv) |
2939 | sv_setiv (prio_sv, coro->prio); |
887 | { |
2940 | XPUSHs (prio_sv); |
888 | int prio; |
|
|
889 | |
2941 | |
890 | if (SvTYPE (sv) != SVt_PVHV) |
2942 | PUTBACK; |
891 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
2943 | call_sv (prio_cv, G_VOID | G_DISCARD); |
|
|
2944 | } |
892 | |
2945 | |
|
|
2946 | /* now call the original request */ |
893 | { |
2947 | { |
894 | SV *coro = sv; |
2948 | dSP; |
895 | SV_CORO (coro, "omg"); |
2949 | CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj; |
896 | prio = SvSTATE (coro)->prio; |
2950 | int i; |
|
|
2951 | |
|
|
2952 | PUSHMARK (SP); |
|
|
2953 | |
|
|
2954 | /* first push all args to the stack */ |
|
|
2955 | EXTEND (SP, items + 1); |
|
|
2956 | |
|
|
2957 | for (i = 0; i < items; ++i) |
|
|
2958 | PUSHs (arg [i]); |
|
|
2959 | |
|
|
2960 | /* now push the callback closure */ |
|
|
2961 | PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); |
|
|
2962 | |
|
|
2963 | /* now call the AIO function - we assume our request is uncancelable */ |
|
|
2964 | PUTBACK; |
|
|
2965 | call_sv ((SV *)req, G_VOID | G_DISCARD); |
897 | } |
2966 | } |
898 | |
2967 | |
899 | av_push (coro_ready [prio - PRIO_MIN], sv); |
2968 | /* now that the requets is going, we loop toll we have a result */ |
900 | coro_nready++; |
2969 | frame->data = (void *)state; |
|
|
2970 | frame->prepare = prepare_schedule; |
|
|
2971 | frame->check = slf_check_aio_req; |
901 | } |
2972 | } |
|
|
2973 | |
|
|
2974 | static void |
|
|
2975 | coro_aio_req_xs (pTHX_ CV *cv) |
|
|
2976 | { |
|
|
2977 | dXSARGS; |
|
|
2978 | |
|
|
2979 | CORO_EXECUTE_SLF_XS (slf_init_aio_req); |
|
|
2980 | |
|
|
2981 | XSRETURN_EMPTY; |
|
|
2982 | } |
|
|
2983 | |
|
|
2984 | /*****************************************************************************/ |
|
|
2985 | |
|
|
2986 | #if CORO_CLONE |
|
|
2987 | # include "clone.c" |
|
|
2988 | #endif |
|
|
2989 | |
|
|
2990 | /*****************************************************************************/ |
902 | |
2991 | |
903 | static SV * |
2992 | static SV * |
904 | coro_deq (pTHX_ int min_prio) |
2993 | coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro) |
905 | { |
2994 | { |
906 | int prio = PRIO_MAX - PRIO_MIN; |
2995 | SV *coro_sv; |
|
|
2996 | struct coro *coro; |
|
|
2997 | MAGIC *mg; |
|
|
2998 | HV *hv; |
|
|
2999 | SV *cb; |
|
|
3000 | int i; |
907 | |
3001 | |
908 | min_prio -= PRIO_MIN; |
3002 | if (argc > 0) |
909 | if (min_prio < 0) |
3003 | { |
910 | min_prio = 0; |
3004 | cb = s_get_cv_croak (argv [0]); |
911 | |
3005 | |
912 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
3006 | if (!is_coro) |
913 | if (AvFILLp (coro_ready [prio]) >= 0) |
|
|
914 | { |
3007 | { |
915 | coro_nready--; |
3008 | if (CvISXSUB (cb)) |
916 | return av_shift (coro_ready [prio]); |
3009 | croak ("Coro::State doesn't support XS functions as coroutine start, caught"); |
|
|
3010 | |
|
|
3011 | if (!CvROOT (cb)) |
|
|
3012 | croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught"); |
917 | } |
3013 | } |
|
|
3014 | } |
918 | |
3015 | |
919 | return 0; |
3016 | Newz (0, coro, 1, struct coro); |
920 | } |
3017 | coro->args = newAV (); |
|
|
3018 | coro->flags = CF_NEW; |
921 | |
3019 | |
922 | static void |
3020 | if (coro_first) coro_first->prev = coro; |
923 | api_ready (SV *coro) |
3021 | coro->next = coro_first; |
924 | { |
3022 | coro_first = coro; |
925 | dTHX; |
|
|
926 | |
3023 | |
927 | if (SvROK (coro)) |
3024 | coro->hv = hv = newHV (); |
928 | coro = SvRV (coro); |
3025 | mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
|
|
3026 | mg->mg_flags |= MGf_DUP; |
|
|
3027 | coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash); |
929 | |
3028 | |
930 | LOCK; |
3029 | if (argc > 0) |
931 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
3030 | { |
932 | UNLOCK; |
3031 | av_extend (coro->args, argc + is_coro - 1); |
933 | } |
|
|
934 | |
3032 | |
935 | static void |
3033 | if (is_coro) |
936 | api_schedule (void) |
3034 | { |
937 | { |
3035 | av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb)); |
938 | dTHX; |
3036 | cb = (SV *)cv_coro_run; |
|
|
3037 | } |
939 | |
3038 | |
940 | SV *prev, *next; |
3039 | coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb); |
941 | |
3040 | |
942 | LOCK; |
3041 | for (i = 1; i < argc; i++) |
|
|
3042 | av_push (coro->args, newSVsv (argv [i])); |
|
|
3043 | } |
943 | |
3044 | |
944 | prev = SvRV (GvSV (coro_current)); |
3045 | return coro_sv; |
945 | next = coro_deq (aTHX_ PRIO_MIN); |
|
|
946 | |
|
|
947 | if (!next) |
|
|
948 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
|
|
949 | |
|
|
950 | /* free this only after the transfer */ |
|
|
951 | coro_mortal = prev; |
|
|
952 | SV_CORO (prev, "Coro::schedule"); |
|
|
953 | |
|
|
954 | SvRV (GvSV (coro_current)) = next; |
|
|
955 | |
|
|
956 | SV_CORO (next, "Coro::schedule"); |
|
|
957 | |
|
|
958 | UNLOCK; |
|
|
959 | |
|
|
960 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
|
|
961 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
962 | } |
3046 | } |
963 | |
3047 | |
964 | static void |
|
|
965 | api_cede (void) |
|
|
966 | { |
|
|
967 | dTHX; |
|
|
968 | |
|
|
969 | LOCK; |
|
|
970 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
971 | UNLOCK; |
|
|
972 | |
|
|
973 | api_schedule (); |
|
|
974 | } |
|
|
975 | |
|
|
976 | MODULE = Coro::State PACKAGE = Coro::State |
3048 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
977 | |
3049 | |
978 | PROTOTYPES: DISABLE |
3050 | PROTOTYPES: DISABLE |
979 | |
3051 | |
980 | BOOT: |
3052 | BOOT: |
981 | { /* {} necessary for stoopid perl-5.6.x */ |
3053 | { |
982 | #ifdef USE_ITHREADS |
3054 | #ifdef USE_ITHREADS |
983 | MUTEX_INIT (&coro_mutex); |
3055 | # if CORO_PTHREAD |
|
|
3056 | coro_thx = PERL_GET_CONTEXT; |
|
|
3057 | # endif |
984 | #endif |
3058 | #endif |
985 | BOOT_PAGESIZE; |
3059 | BOOT_PAGESIZE; |
986 | |
3060 | |
987 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
3061 | cctx_current = cctx_new_empty (); |
988 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
3062 | |
|
|
3063 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
|
|
3064 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
|
|
3065 | |
|
|
3066 | orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
|
|
3067 | orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
|
|
3068 | orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
|
|
3069 | |
|
|
3070 | hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
|
|
3071 | rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
|
|
3072 | rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
|
|
3073 | |
989 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
3074 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
990 | |
3075 | |
991 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
3076 | newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
992 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
3077 | newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
993 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
3078 | newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
994 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
3079 | newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
995 | |
3080 | |
996 | main_mainstack = PL_mainstack; |
3081 | main_mainstack = PL_mainstack; |
|
|
3082 | main_top_env = PL_top_env; |
997 | |
3083 | |
|
|
3084 | while (main_top_env->je_prev) |
|
|
3085 | main_top_env = main_top_env->je_prev; |
|
|
3086 | |
|
|
3087 | { |
|
|
3088 | SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
|
|
3089 | |
|
|
3090 | if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
|
|
3091 | hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0); |
|
|
3092 | |
|
|
3093 | if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
|
|
3094 | hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0); |
|
|
3095 | } |
|
|
3096 | |
998 | coroapi.ver = CORO_API_VERSION; |
3097 | coroapi.ver = CORO_API_VERSION; |
|
|
3098 | coroapi.rev = CORO_API_REVISION; |
|
|
3099 | |
999 | coroapi.transfer = api_transfer; |
3100 | coroapi.transfer = api_transfer; |
1000 | |
3101 | |
|
|
3102 | coroapi.sv_state = SvSTATE_; |
|
|
3103 | coroapi.execute_slf = api_execute_slf; |
|
|
3104 | coroapi.prepare_nop = prepare_nop; |
|
|
3105 | coroapi.prepare_schedule = prepare_schedule; |
|
|
3106 | coroapi.prepare_cede = prepare_cede; |
|
|
3107 | coroapi.prepare_cede_notself = prepare_cede_notself; |
|
|
3108 | |
|
|
3109 | { |
|
|
3110 | SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
|
|
3111 | |
|
|
3112 | if (!svp) croak ("Time::HiRes is required"); |
|
|
3113 | if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
|
|
3114 | |
|
|
3115 | nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
|
|
3116 | |
|
|
3117 | svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0); |
|
|
3118 | u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp)); |
|
|
3119 | } |
|
|
3120 | |
1001 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
3121 | assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL)); |
1002 | } |
3122 | } |
1003 | |
3123 | |
1004 | SV * |
3124 | SV * |
1005 | new (char *klass, ...) |
3125 | new (SV *klass, ...) |
|
|
3126 | ALIAS: |
|
|
3127 | Coro::new = 1 |
1006 | CODE: |
3128 | CODE: |
1007 | { |
3129 | RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix); |
1008 | struct coro *coro; |
3130 | OUTPUT: |
1009 | HV *hv; |
3131 | RETVAL |
1010 | int i; |
|
|
1011 | |
3132 | |
1012 | Newz (0, coro, 1, struct coro); |
3133 | void |
1013 | coro->args = newAV (); |
3134 | transfer (...) |
|
|
3135 | PROTOTYPE: $$ |
|
|
3136 | CODE: |
|
|
3137 | CORO_EXECUTE_SLF_XS (slf_init_transfer); |
1014 | |
3138 | |
1015 | for (i = 1; i < items; i++) |
3139 | bool |
1016 | av_push (coro->args, newSVsv (ST (i))); |
3140 | _destroy (SV *coro_sv) |
|
|
3141 | CODE: |
|
|
3142 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
|
|
3143 | OUTPUT: |
|
|
3144 | RETVAL |
1017 | |
3145 | |
1018 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
3146 | void |
1019 | /*coro->stack = 0;*/ |
3147 | _exit (int code) |
|
|
3148 | PROTOTYPE: $ |
|
|
3149 | CODE: |
|
|
3150 | _exit (code); |
1020 | |
3151 | |
|
|
3152 | SV * |
|
|
3153 | clone (Coro::State coro) |
|
|
3154 | CODE: |
|
|
3155 | { |
|
|
3156 | #if CORO_CLONE |
|
|
3157 | struct coro *ncoro = coro_clone (aTHX_ coro); |
|
|
3158 | MAGIC *mg; |
|
|
3159 | /* TODO: too much duplication */ |
1021 | hv = newHV (); |
3160 | ncoro->hv = newHV (); |
1022 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
3161 | mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0); |
|
|
3162 | mg->mg_flags |= MGf_DUP; |
1023 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
3163 | RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv)); |
|
|
3164 | #else |
|
|
3165 | croak ("Coro::State->clone has not been configured into this installation of Coro, realised"); |
|
|
3166 | #endif |
|
|
3167 | } |
|
|
3168 | OUTPUT: |
|
|
3169 | RETVAL |
|
|
3170 | |
|
|
3171 | int |
|
|
3172 | cctx_stacksize (int new_stacksize = 0) |
|
|
3173 | PROTOTYPE: ;$ |
|
|
3174 | CODE: |
|
|
3175 | RETVAL = cctx_stacksize; |
|
|
3176 | if (new_stacksize) |
|
|
3177 | { |
|
|
3178 | cctx_stacksize = new_stacksize; |
|
|
3179 | ++cctx_gen; |
|
|
3180 | } |
|
|
3181 | OUTPUT: |
|
|
3182 | RETVAL |
|
|
3183 | |
|
|
3184 | int |
|
|
3185 | cctx_max_idle (int max_idle = 0) |
|
|
3186 | PROTOTYPE: ;$ |
|
|
3187 | CODE: |
|
|
3188 | RETVAL = cctx_max_idle; |
|
|
3189 | if (max_idle > 1) |
|
|
3190 | cctx_max_idle = max_idle; |
|
|
3191 | OUTPUT: |
|
|
3192 | RETVAL |
|
|
3193 | |
|
|
3194 | int |
|
|
3195 | cctx_count () |
|
|
3196 | PROTOTYPE: |
|
|
3197 | CODE: |
|
|
3198 | RETVAL = cctx_count; |
|
|
3199 | OUTPUT: |
|
|
3200 | RETVAL |
|
|
3201 | |
|
|
3202 | int |
|
|
3203 | cctx_idle () |
|
|
3204 | PROTOTYPE: |
|
|
3205 | CODE: |
|
|
3206 | RETVAL = cctx_idle; |
|
|
3207 | OUTPUT: |
|
|
3208 | RETVAL |
|
|
3209 | |
|
|
3210 | void |
|
|
3211 | list () |
|
|
3212 | PROTOTYPE: |
|
|
3213 | PPCODE: |
|
|
3214 | { |
|
|
3215 | struct coro *coro; |
|
|
3216 | for (coro = coro_first; coro; coro = coro->next) |
|
|
3217 | if (coro->hv) |
|
|
3218 | XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
|
|
3219 | } |
|
|
3220 | |
|
|
3221 | void |
|
|
3222 | call (Coro::State coro, SV *coderef) |
|
|
3223 | ALIAS: |
|
|
3224 | eval = 1 |
|
|
3225 | CODE: |
|
|
3226 | { |
|
|
3227 | if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
|
|
3228 | { |
|
|
3229 | struct coro *current = SvSTATE_current; |
|
|
3230 | |
|
|
3231 | if (current != coro) |
|
|
3232 | { |
|
|
3233 | PUTBACK; |
|
|
3234 | save_perl (aTHX_ current); |
|
|
3235 | load_perl (aTHX_ coro); |
|
|
3236 | SPAGAIN; |
|
|
3237 | } |
|
|
3238 | |
|
|
3239 | PUSHSTACK; |
|
|
3240 | |
|
|
3241 | PUSHMARK (SP); |
|
|
3242 | PUTBACK; |
|
|
3243 | |
|
|
3244 | if (ix) |
|
|
3245 | eval_sv (coderef, 0); |
|
|
3246 | else |
|
|
3247 | call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
3248 | |
|
|
3249 | POPSTACK; |
|
|
3250 | SPAGAIN; |
|
|
3251 | |
|
|
3252 | if (current != coro) |
|
|
3253 | { |
|
|
3254 | PUTBACK; |
|
|
3255 | save_perl (aTHX_ coro); |
|
|
3256 | load_perl (aTHX_ current); |
|
|
3257 | SPAGAIN; |
|
|
3258 | } |
|
|
3259 | } |
|
|
3260 | } |
|
|
3261 | |
|
|
3262 | SV * |
|
|
3263 | is_ready (Coro::State coro) |
|
|
3264 | PROTOTYPE: $ |
|
|
3265 | ALIAS: |
|
|
3266 | is_ready = CF_READY |
|
|
3267 | is_running = CF_RUNNING |
|
|
3268 | is_new = CF_NEW |
|
|
3269 | is_destroyed = CF_DESTROYED |
|
|
3270 | is_suspended = CF_SUSPENDED |
|
|
3271 | CODE: |
|
|
3272 | RETVAL = boolSV (coro->flags & ix); |
|
|
3273 | OUTPUT: |
|
|
3274 | RETVAL |
|
|
3275 | |
|
|
3276 | void |
|
|
3277 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
|
|
3278 | PROTOTYPE: $;$ |
|
|
3279 | CODE: |
|
|
3280 | { |
|
|
3281 | struct coro *current = SvSTATE_current; |
|
|
3282 | SV **throwp = self == current ? &CORO_THROW : &self->except; |
|
|
3283 | SvREFCNT_dec (*throwp); |
|
|
3284 | SvGETMAGIC (throw); |
|
|
3285 | *throwp = SvOK (throw) ? newSVsv (throw) : 0; |
|
|
3286 | } |
|
|
3287 | |
|
|
3288 | void |
|
|
3289 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
|
|
3290 | PROTOTYPE: $;$ |
|
|
3291 | C_ARGS: aTHX_ coro, flags |
|
|
3292 | |
|
|
3293 | SV * |
|
|
3294 | has_cctx (Coro::State coro) |
|
|
3295 | PROTOTYPE: $ |
|
|
3296 | CODE: |
|
|
3297 | /* maybe manage the running flag differently */ |
|
|
3298 | RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING)); |
|
|
3299 | OUTPUT: |
|
|
3300 | RETVAL |
|
|
3301 | |
|
|
3302 | int |
|
|
3303 | is_traced (Coro::State coro) |
|
|
3304 | PROTOTYPE: $ |
|
|
3305 | CODE: |
|
|
3306 | RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
|
|
3307 | OUTPUT: |
|
|
3308 | RETVAL |
|
|
3309 | |
|
|
3310 | UV |
|
|
3311 | rss (Coro::State coro) |
|
|
3312 | PROTOTYPE: $ |
|
|
3313 | ALIAS: |
|
|
3314 | usecount = 1 |
|
|
3315 | CODE: |
|
|
3316 | switch (ix) |
|
|
3317 | { |
|
|
3318 | case 0: RETVAL = coro_rss (aTHX_ coro); break; |
|
|
3319 | case 1: RETVAL = coro->usecount; break; |
|
|
3320 | } |
|
|
3321 | OUTPUT: |
|
|
3322 | RETVAL |
|
|
3323 | |
|
|
3324 | void |
|
|
3325 | force_cctx () |
|
|
3326 | PROTOTYPE: |
|
|
3327 | CODE: |
|
|
3328 | cctx_current->idle_sp = 0; |
|
|
3329 | |
|
|
3330 | void |
|
|
3331 | swap_defsv (Coro::State self) |
|
|
3332 | PROTOTYPE: $ |
|
|
3333 | ALIAS: |
|
|
3334 | swap_defav = 1 |
|
|
3335 | CODE: |
|
|
3336 | if (!self->slot) |
|
|
3337 | croak ("cannot swap state with coroutine that has no saved state,"); |
|
|
3338 | else |
|
|
3339 | { |
|
|
3340 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
|
|
3341 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
|
|
3342 | |
|
|
3343 | SV *tmp = *src; *src = *dst; *dst = tmp; |
|
|
3344 | } |
|
|
3345 | |
|
|
3346 | void |
|
|
3347 | cancel (Coro::State self) |
|
|
3348 | CODE: |
|
|
3349 | coro_state_destroy (aTHX_ self); |
|
|
3350 | coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */ |
|
|
3351 | |
|
|
3352 | |
|
|
3353 | SV * |
|
|
3354 | enable_times (int enabled = enable_times) |
|
|
3355 | CODE: |
|
|
3356 | { |
|
|
3357 | RETVAL = boolSV (enable_times); |
|
|
3358 | |
|
|
3359 | if (enabled != enable_times) |
|
|
3360 | { |
|
|
3361 | enable_times = enabled; |
|
|
3362 | |
|
|
3363 | coro_times_update (); |
|
|
3364 | (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current)); |
|
|
3365 | } |
1024 | } |
3366 | } |
1025 | OUTPUT: |
3367 | OUTPUT: |
1026 | RETVAL |
3368 | RETVAL |
1027 | |
3369 | |
1028 | void |
3370 | void |
1029 | transfer(prev, next, flags) |
3371 | times (Coro::State self) |
1030 | SV *prev |
3372 | PPCODE: |
1031 | SV *next |
3373 | { |
1032 | int flags |
3374 | struct coro *current = SvSTATE (coro_current); |
|
|
3375 | |
|
|
3376 | if (expect_false (current == self)) |
|
|
3377 | { |
|
|
3378 | coro_times_update (); |
|
|
3379 | coro_times_add (SvSTATE (coro_current)); |
|
|
3380 | } |
|
|
3381 | |
|
|
3382 | EXTEND (SP, 2); |
|
|
3383 | PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9))); |
|
|
3384 | PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9))); |
|
|
3385 | |
|
|
3386 | if (expect_false (current == self)) |
|
|
3387 | coro_times_sub (SvSTATE (coro_current)); |
|
|
3388 | } |
|
|
3389 | |
|
|
3390 | void |
|
|
3391 | swap_sv (Coro::State coro, SV *sv, SV *swapsv) |
|
|
3392 | CODE: |
|
|
3393 | { |
|
|
3394 | struct coro *current = SvSTATE_current; |
|
|
3395 | |
|
|
3396 | if (current == coro) |
|
|
3397 | SWAP_SVS (current); |
|
|
3398 | |
|
|
3399 | if (!coro->swap_sv) |
|
|
3400 | coro->swap_sv = newAV (); |
|
|
3401 | |
|
|
3402 | av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv ))); |
|
|
3403 | av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv))); |
|
|
3404 | |
|
|
3405 | if (current == coro) |
|
|
3406 | SWAP_SVS (current); |
|
|
3407 | } |
|
|
3408 | |
|
|
3409 | |
|
|
3410 | MODULE = Coro::State PACKAGE = Coro |
|
|
3411 | |
|
|
3412 | BOOT: |
|
|
3413 | { |
|
|
3414 | sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
|
|
3415 | sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
|
|
3416 | cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD); |
|
|
3417 | cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD); |
|
|
3418 | coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); |
|
|
3419 | av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
|
|
3420 | av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); |
|
|
3421 | sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); |
|
|
3422 | sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); |
|
|
3423 | |
|
|
3424 | sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); |
|
|
3425 | sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); |
|
|
3426 | cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); |
|
|
3427 | CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */ |
|
|
3428 | |
|
|
3429 | coro_stash = gv_stashpv ("Coro", TRUE); |
|
|
3430 | |
|
|
3431 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX)); |
|
|
3432 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH)); |
|
|
3433 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL)); |
|
|
3434 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW)); |
|
|
3435 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE)); |
|
|
3436 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN)); |
|
|
3437 | |
|
|
3438 | { |
|
|
3439 | SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
|
|
3440 | |
|
|
3441 | coroapi.schedule = api_schedule; |
|
|
3442 | coroapi.schedule_to = api_schedule_to; |
|
|
3443 | coroapi.cede = api_cede; |
|
|
3444 | coroapi.cede_notself = api_cede_notself; |
|
|
3445 | coroapi.ready = api_ready; |
|
|
3446 | coroapi.is_ready = api_is_ready; |
|
|
3447 | coroapi.nready = coro_nready; |
|
|
3448 | coroapi.current = coro_current; |
|
|
3449 | |
|
|
3450 | /*GCoroAPI = &coroapi;*/ |
|
|
3451 | sv_setiv (sv, (IV)&coroapi); |
|
|
3452 | SvREADONLY_on (sv); |
|
|
3453 | } |
|
|
3454 | } |
|
|
3455 | |
|
|
3456 | SV * |
|
|
3457 | async (...) |
|
|
3458 | PROTOTYPE: &@ |
1033 | CODE: |
3459 | CODE: |
1034 | PUTBACK; |
3460 | RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1); |
1035 | SV_CORO (next, "Coro::transfer"); |
3461 | api_ready (aTHX_ RETVAL); |
1036 | SV_CORO (prev, "Coro::transfer"); |
3462 | OUTPUT: |
1037 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
3463 | RETVAL |
1038 | SPAGAIN; |
3464 | |
|
|
3465 | void |
|
|
3466 | terminate (...) |
|
|
3467 | CODE: |
|
|
3468 | CORO_EXECUTE_SLF_XS (slf_init_terminate); |
|
|
3469 | |
|
|
3470 | void |
|
|
3471 | schedule (...) |
|
|
3472 | CODE: |
|
|
3473 | CORO_EXECUTE_SLF_XS (slf_init_schedule); |
|
|
3474 | |
|
|
3475 | void |
|
|
3476 | schedule_to (...) |
|
|
3477 | CODE: |
|
|
3478 | CORO_EXECUTE_SLF_XS (slf_init_schedule_to); |
|
|
3479 | |
|
|
3480 | void |
|
|
3481 | cede_to (...) |
|
|
3482 | CODE: |
|
|
3483 | CORO_EXECUTE_SLF_XS (slf_init_cede_to); |
|
|
3484 | |
|
|
3485 | void |
|
|
3486 | cede (...) |
|
|
3487 | CODE: |
|
|
3488 | CORO_EXECUTE_SLF_XS (slf_init_cede); |
|
|
3489 | |
|
|
3490 | void |
|
|
3491 | cede_notself (...) |
|
|
3492 | CODE: |
|
|
3493 | CORO_EXECUTE_SLF_XS (slf_init_cede_notself); |
|
|
3494 | |
|
|
3495 | void |
|
|
3496 | _set_current (SV *current) |
|
|
3497 | PROTOTYPE: $ |
|
|
3498 | CODE: |
|
|
3499 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
3500 | SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
|
|
3501 | |
|
|
3502 | void |
|
|
3503 | _set_readyhook (SV *hook) |
|
|
3504 | PROTOTYPE: $ |
|
|
3505 | CODE: |
|
|
3506 | SvREFCNT_dec (coro_readyhook); |
|
|
3507 | SvGETMAGIC (hook); |
|
|
3508 | if (SvOK (hook)) |
|
|
3509 | { |
|
|
3510 | coro_readyhook = newSVsv (hook); |
|
|
3511 | CORO_READYHOOK = invoke_sv_ready_hook_helper; |
|
|
3512 | } |
|
|
3513 | else |
|
|
3514 | { |
|
|
3515 | coro_readyhook = 0; |
|
|
3516 | CORO_READYHOOK = 0; |
|
|
3517 | } |
1039 | |
3518 | |
1040 | int |
3519 | int |
1041 | prio (Coro::State coro, int newprio = 0) |
3520 | prio (Coro::State coro, int newprio = 0) |
|
|
3521 | PROTOTYPE: $;$ |
1042 | ALIAS: |
3522 | ALIAS: |
1043 | nice = 1 |
3523 | nice = 1 |
1044 | CODE: |
3524 | CODE: |
1045 | { |
3525 | { |
1046 | RETVAL = coro->prio; |
3526 | RETVAL = coro->prio; |
1047 | |
3527 | |
1048 | if (items > 1) |
3528 | if (items > 1) |
1049 | { |
3529 | { |
1050 | if (ix) |
3530 | if (ix) |
1051 | newprio += coro->prio; |
3531 | newprio = coro->prio - newprio; |
1052 | |
3532 | |
1053 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
3533 | if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN; |
1054 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
3534 | if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX; |
1055 | |
3535 | |
1056 | coro->prio = newprio; |
3536 | coro->prio = newprio; |
1057 | } |
3537 | } |
1058 | } |
3538 | } |
|
|
3539 | OUTPUT: |
|
|
3540 | RETVAL |
1059 | |
3541 | |
1060 | void |
3542 | SV * |
1061 | _clone_state_from (SV *dst, SV *src) |
3543 | ready (SV *self) |
1062 | CODE: |
|
|
1063 | { |
|
|
1064 | struct coro *coro_src = SvSTATE (src); |
|
|
1065 | |
|
|
1066 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
|
|
1067 | |
|
|
1068 | ++coro_src->refcnt; |
|
|
1069 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
|
|
1070 | } |
|
|
1071 | |
|
|
1072 | void |
|
|
1073 | _exit (code) |
|
|
1074 | int code |
|
|
1075 | PROTOTYPE: $ |
3544 | PROTOTYPE: $ |
1076 | CODE: |
3545 | CODE: |
1077 | _exit (code); |
3546 | RETVAL = boolSV (api_ready (aTHX_ self)); |
1078 | |
3547 | OUTPUT: |
1079 | MODULE = Coro::State PACKAGE = Coro::Cont |
3548 | RETVAL |
1080 | |
|
|
1081 | void |
|
|
1082 | yield (...) |
|
|
1083 | PROTOTYPE: @ |
|
|
1084 | CODE: |
|
|
1085 | SV *yieldstack; |
|
|
1086 | SV *sv; |
|
|
1087 | AV *defav = GvAV (PL_defgv); |
|
|
1088 | struct coro *prev, *next; |
|
|
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 | prev = SvSTATE ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
1104 | next = SvSTATE ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
1105 | SvREFCNT_dec (sv); |
|
|
1106 | |
|
|
1107 | coro_state_transfer (aTHX_ prev, next, 0); |
|
|
1108 | |
|
|
1109 | MODULE = Coro::State PACKAGE = Coro |
|
|
1110 | |
|
|
1111 | BOOT: |
|
|
1112 | { |
|
|
1113 | int i; |
|
|
1114 | HV *stash = gv_stashpv ("Coro", TRUE); |
|
|
1115 | |
|
|
1116 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
|
|
1117 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
|
|
1118 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
|
|
1119 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
|
|
1120 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
|
|
1121 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
|
|
1122 | |
|
|
1123 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1124 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1125 | |
|
|
1126 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
|
|
1127 | coro_ready[i] = newAV (); |
|
|
1128 | |
|
|
1129 | { |
|
|
1130 | SV *sv = perl_get_sv("Coro::API", 1); |
|
|
1131 | |
|
|
1132 | coroapi.schedule = api_schedule; |
|
|
1133 | coroapi.cede = api_cede; |
|
|
1134 | coroapi.ready = api_ready; |
|
|
1135 | coroapi.nready = &coro_nready; |
|
|
1136 | coroapi.current = coro_current; |
|
|
1137 | |
|
|
1138 | GCoroAPI = &coroapi; |
|
|
1139 | sv_setiv (sv, (IV)&coroapi); |
|
|
1140 | SvREADONLY_on (sv); |
|
|
1141 | } |
|
|
1142 | } |
|
|
1143 | |
|
|
1144 | #if !PERL_MICRO |
|
|
1145 | |
|
|
1146 | void |
|
|
1147 | ready (self) |
|
|
1148 | SV * self |
|
|
1149 | PROTOTYPE: $ |
|
|
1150 | CODE: |
|
|
1151 | api_ready (self); |
|
|
1152 | |
|
|
1153 | #endif |
|
|
1154 | |
3549 | |
1155 | int |
3550 | int |
1156 | nready (...) |
3551 | nready (...) |
1157 | PROTOTYPE: |
3552 | PROTOTYPE: |
1158 | CODE: |
3553 | CODE: |
1159 | RETVAL = coro_nready; |
3554 | RETVAL = coro_nready; |
1160 | OUTPUT: |
3555 | OUTPUT: |
1161 | RETVAL |
3556 | RETVAL |
1162 | |
3557 | |
1163 | void |
3558 | void |
1164 | schedule (...) |
3559 | suspend (Coro::State self) |
1165 | PROTOTYPE: |
3560 | PROTOTYPE: $ |
1166 | CODE: |
3561 | CODE: |
1167 | api_schedule (); |
3562 | self->flags |= CF_SUSPENDED; |
1168 | |
3563 | |
1169 | void |
3564 | void |
1170 | cede (...) |
3565 | resume (Coro::State self) |
1171 | PROTOTYPE: |
3566 | PROTOTYPE: $ |
1172 | CODE: |
3567 | CODE: |
1173 | api_cede (); |
3568 | self->flags &= ~CF_SUSPENDED; |
1174 | |
3569 | |
1175 | # and these are hacks |
3570 | void |
|
|
3571 | _pool_handler (...) |
|
|
3572 | CODE: |
|
|
3573 | CORO_EXECUTE_SLF_XS (slf_init_pool_handler); |
|
|
3574 | |
|
|
3575 | void |
|
|
3576 | async_pool (SV *cv, ...) |
|
|
3577 | PROTOTYPE: &@ |
|
|
3578 | PPCODE: |
|
|
3579 | { |
|
|
3580 | HV *hv = (HV *)av_pop (av_async_pool); |
|
|
3581 | AV *av = newAV (); |
|
|
3582 | SV *cb = ST (0); |
|
|
3583 | int i; |
|
|
3584 | |
|
|
3585 | av_extend (av, items - 2); |
|
|
3586 | for (i = 1; i < items; ++i) |
|
|
3587 | av_push (av, SvREFCNT_inc_NN (ST (i))); |
|
|
3588 | |
|
|
3589 | if ((SV *)hv == &PL_sv_undef) |
|
|
3590 | { |
|
|
3591 | SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1); |
|
|
3592 | hv = (HV *)SvREFCNT_inc_NN (SvRV (sv)); |
|
|
3593 | SvREFCNT_dec (sv); |
|
|
3594 | } |
|
|
3595 | |
|
|
3596 | { |
|
|
3597 | struct coro *coro = SvSTATE_hv (hv); |
|
|
3598 | |
|
|
3599 | assert (!coro->invoke_cb); |
|
|
3600 | assert (!coro->invoke_av); |
|
|
3601 | coro->invoke_cb = SvREFCNT_inc (cb); |
|
|
3602 | coro->invoke_av = av; |
|
|
3603 | } |
|
|
3604 | |
|
|
3605 | api_ready (aTHX_ (SV *)hv); |
|
|
3606 | |
|
|
3607 | if (GIMME_V != G_VOID) |
|
|
3608 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); |
|
|
3609 | else |
|
|
3610 | SvREFCNT_dec (hv); |
|
|
3611 | } |
|
|
3612 | |
1176 | SV * |
3613 | SV * |
1177 | _aio_get_state () |
3614 | rouse_cb () |
|
|
3615 | PROTOTYPE: |
1178 | CODE: |
3616 | CODE: |
1179 | { |
3617 | RETVAL = coro_new_rouse_cb (aTHX); |
1180 | struct { |
|
|
1181 | int errorno; |
|
|
1182 | int laststype; |
|
|
1183 | int laststatval; |
|
|
1184 | Stat_t statcache; |
|
|
1185 | } data; |
|
|
1186 | |
|
|
1187 | data.errorno = errno; |
|
|
1188 | data.laststype = PL_laststype; |
|
|
1189 | data.laststatval = PL_laststatval; |
|
|
1190 | data.statcache = PL_statcache; |
|
|
1191 | |
|
|
1192 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1193 | } |
|
|
1194 | OUTPUT: |
3618 | OUTPUT: |
1195 | RETVAL |
3619 | RETVAL |
1196 | |
3620 | |
1197 | void |
3621 | void |
1198 | _aio_set_state (char *data_) |
3622 | rouse_wait (...) |
|
|
3623 | PROTOTYPE: ;$ |
|
|
3624 | PPCODE: |
|
|
3625 | CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); |
|
|
3626 | |
|
|
3627 | void |
|
|
3628 | on_enter (SV *block) |
|
|
3629 | ALIAS: |
|
|
3630 | on_leave = 1 |
1199 | PROTOTYPE: $ |
3631 | PROTOTYPE: & |
1200 | CODE: |
3632 | CODE: |
1201 | { |
3633 | { |
1202 | struct { |
3634 | struct coro *coro = SvSTATE_current; |
|
|
3635 | AV **avp = ix ? &coro->on_leave : &coro->on_enter; |
|
|
3636 | |
|
|
3637 | block = s_get_cv_croak (block); |
|
|
3638 | |
|
|
3639 | if (!*avp) |
|
|
3640 | *avp = newAV (); |
|
|
3641 | |
|
|
3642 | av_push (*avp, SvREFCNT_inc (block)); |
|
|
3643 | |
|
|
3644 | if (!ix) |
|
|
3645 | on_enterleave_call (aTHX_ block); |
|
|
3646 | |
|
|
3647 | LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */ |
|
|
3648 | SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro); |
|
|
3649 | ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */ |
|
|
3650 | } |
|
|
3651 | |
|
|
3652 | |
|
|
3653 | MODULE = Coro::State PACKAGE = PerlIO::cede |
|
|
3654 | |
|
|
3655 | BOOT: |
|
|
3656 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
|
|
3657 | |
|
|
3658 | |
|
|
3659 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
|
|
3660 | |
|
|
3661 | SV * |
|
|
3662 | new (SV *klass, SV *count = 0) |
|
|
3663 | CODE: |
|
|
3664 | { |
|
|
3665 | int semcnt = 1; |
|
|
3666 | |
|
|
3667 | if (count) |
|
|
3668 | { |
|
|
3669 | SvGETMAGIC (count); |
|
|
3670 | |
|
|
3671 | if (SvOK (count)) |
|
|
3672 | semcnt = SvIV (count); |
|
|
3673 | } |
|
|
3674 | |
|
|
3675 | RETVAL = sv_bless ( |
|
|
3676 | coro_waitarray_new (aTHX_ semcnt), |
|
|
3677 | GvSTASH (CvGV (cv)) |
|
|
3678 | ); |
|
|
3679 | } |
|
|
3680 | OUTPUT: |
|
|
3681 | RETVAL |
|
|
3682 | |
|
|
3683 | # helper for Coro::Channel and others |
|
|
3684 | SV * |
|
|
3685 | _alloc (int count) |
|
|
3686 | CODE: |
|
|
3687 | RETVAL = coro_waitarray_new (aTHX_ count); |
|
|
3688 | OUTPUT: |
|
|
3689 | RETVAL |
|
|
3690 | |
|
|
3691 | SV * |
|
|
3692 | count (SV *self) |
|
|
3693 | CODE: |
|
|
3694 | RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
|
|
3695 | OUTPUT: |
|
|
3696 | RETVAL |
|
|
3697 | |
|
|
3698 | void |
|
|
3699 | up (SV *self, int adjust = 1) |
|
|
3700 | ALIAS: |
|
|
3701 | adjust = 1 |
|
|
3702 | CODE: |
|
|
3703 | coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); |
|
|
3704 | |
|
|
3705 | void |
|
|
3706 | down (...) |
|
|
3707 | CODE: |
|
|
3708 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
|
|
3709 | |
|
|
3710 | void |
|
|
3711 | wait (...) |
|
|
3712 | CODE: |
|
|
3713 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); |
|
|
3714 | |
|
|
3715 | void |
|
|
3716 | try (SV *self) |
|
|
3717 | PPCODE: |
|
|
3718 | { |
|
|
3719 | AV *av = (AV *)SvRV (self); |
|
|
3720 | SV *count_sv = AvARRAY (av)[0]; |
|
|
3721 | IV count = SvIVX (count_sv); |
|
|
3722 | |
|
|
3723 | if (count > 0) |
|
|
3724 | { |
|
|
3725 | --count; |
|
|
3726 | SvIVX (count_sv) = count; |
|
|
3727 | XSRETURN_YES; |
|
|
3728 | } |
|
|
3729 | else |
|
|
3730 | XSRETURN_NO; |
|
|
3731 | } |
|
|
3732 | |
|
|
3733 | void |
|
|
3734 | waiters (SV *self) |
|
|
3735 | PPCODE: |
|
|
3736 | { |
|
|
3737 | AV *av = (AV *)SvRV (self); |
|
|
3738 | int wcount = AvFILLp (av) + 1 - 1; |
|
|
3739 | |
|
|
3740 | if (GIMME_V == G_SCALAR) |
|
|
3741 | XPUSHs (sv_2mortal (newSViv (wcount))); |
|
|
3742 | else |
|
|
3743 | { |
1203 | int errorno; |
3744 | int i; |
1204 | int laststype; |
3745 | EXTEND (SP, wcount); |
1205 | int laststatval; |
3746 | for (i = 1; i <= wcount; ++i) |
1206 | Stat_t statcache; |
3747 | PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); |
1207 | } *data = (void *)data_; |
3748 | } |
1208 | |
|
|
1209 | errno = data->errorno; |
|
|
1210 | PL_laststype = data->laststype; |
|
|
1211 | PL_laststatval = data->laststatval; |
|
|
1212 | PL_statcache = data->statcache; |
|
|
1213 | } |
3749 | } |
|
|
3750 | |
|
|
3751 | MODULE = Coro::State PACKAGE = Coro::SemaphoreSet |
|
|
3752 | |
|
|
3753 | void |
|
|
3754 | _may_delete (SV *sem, int count, int extra_refs) |
|
|
3755 | PPCODE: |
|
|
3756 | { |
|
|
3757 | AV *av = (AV *)SvRV (sem); |
|
|
3758 | |
|
|
3759 | if (SvREFCNT ((SV *)av) == 1 + extra_refs |
|
|
3760 | && AvFILLp (av) == 0 /* no waiters, just count */ |
|
|
3761 | && SvIV (AvARRAY (av)[0]) == count) |
|
|
3762 | XSRETURN_YES; |
|
|
3763 | |
|
|
3764 | XSRETURN_NO; |
|
|
3765 | } |
|
|
3766 | |
|
|
3767 | MODULE = Coro::State PACKAGE = Coro::Signal |
|
|
3768 | |
|
|
3769 | SV * |
|
|
3770 | new (SV *klass) |
|
|
3771 | CODE: |
|
|
3772 | RETVAL = sv_bless ( |
|
|
3773 | coro_waitarray_new (aTHX_ 0), |
|
|
3774 | GvSTASH (CvGV (cv)) |
|
|
3775 | ); |
|
|
3776 | OUTPUT: |
|
|
3777 | RETVAL |
|
|
3778 | |
|
|
3779 | void |
|
|
3780 | wait (...) |
|
|
3781 | CODE: |
|
|
3782 | CORO_EXECUTE_SLF_XS (slf_init_signal_wait); |
|
|
3783 | |
|
|
3784 | void |
|
|
3785 | broadcast (SV *self) |
|
|
3786 | CODE: |
|
|
3787 | { |
|
|
3788 | AV *av = (AV *)SvRV (self); |
|
|
3789 | coro_signal_wake (aTHX_ av, AvFILLp (av)); |
|
|
3790 | } |
|
|
3791 | |
|
|
3792 | void |
|
|
3793 | send (SV *self) |
|
|
3794 | CODE: |
|
|
3795 | { |
|
|
3796 | AV *av = (AV *)SvRV (self); |
|
|
3797 | |
|
|
3798 | if (AvFILLp (av)) |
|
|
3799 | coro_signal_wake (aTHX_ av, 1); |
|
|
3800 | else |
|
|
3801 | SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ |
|
|
3802 | } |
|
|
3803 | |
|
|
3804 | IV |
|
|
3805 | awaited (SV *self) |
|
|
3806 | CODE: |
|
|
3807 | RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; |
|
|
3808 | OUTPUT: |
|
|
3809 | RETVAL |
|
|
3810 | |
|
|
3811 | |
|
|
3812 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
3813 | |
|
|
3814 | BOOT: |
|
|
3815 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
3816 | |
|
|
3817 | void |
|
|
3818 | _schedule (...) |
|
|
3819 | CODE: |
|
|
3820 | { |
|
|
3821 | static int incede; |
|
|
3822 | |
|
|
3823 | api_cede_notself (aTHX); |
|
|
3824 | |
|
|
3825 | ++incede; |
|
|
3826 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
3827 | ; |
|
|
3828 | |
|
|
3829 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
3830 | if (coro_nready >= incede) |
|
|
3831 | { |
|
|
3832 | PUSHMARK (SP); |
|
|
3833 | PUTBACK; |
|
|
3834 | call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
3835 | } |
|
|
3836 | |
|
|
3837 | --incede; |
|
|
3838 | } |
|
|
3839 | |
|
|
3840 | |
|
|
3841 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
3842 | |
|
|
3843 | void |
|
|
3844 | _register (char *target, char *proto, SV *req) |
|
|
3845 | CODE: |
|
|
3846 | { |
|
|
3847 | SV *req_cv = s_get_cv_croak (req); |
|
|
3848 | /* newXSproto doesn't return the CV on 5.8 */ |
|
|
3849 | CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); |
|
|
3850 | sv_setpv ((SV *)slf_cv, proto); |
|
|
3851 | sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); |
|
|
3852 | } |
|
|
3853 | |
|
|
3854 | MODULE = Coro::State PACKAGE = Coro::Select |
|
|
3855 | |
|
|
3856 | void |
|
|
3857 | patch_pp_sselect () |
|
|
3858 | CODE: |
|
|
3859 | if (!coro_old_pp_sselect) |
|
|
3860 | { |
|
|
3861 | coro_select_select = (SV *)get_cv ("Coro::Select::select", 0); |
|
|
3862 | coro_old_pp_sselect = PL_ppaddr [OP_SSELECT]; |
|
|
3863 | PL_ppaddr [OP_SSELECT] = coro_pp_sselect; |
|
|
3864 | } |
|
|
3865 | |
|
|
3866 | void |
|
|
3867 | unpatch_pp_sselect () |
|
|
3868 | CODE: |
|
|
3869 | if (coro_old_pp_sselect) |
|
|
3870 | { |
|
|
3871 | PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect; |
|
|
3872 | coro_old_pp_sselect = 0; |
|
|
3873 | } |
|
|
3874 | |
|
|
3875 | |