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Comparing Coro/Coro/State.xs (file contents):
Revision 1.299 by root, Wed Nov 19 00:06:55 2008 UTC vs.
Revision 1.447 by root, Tue Oct 14 21:53:32 2014 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SVs_PADSTALE
28# define SVs_PADSTALE 0
29#endif
30
31#ifdef PadARRAY
32# define NEWPADAPI 1
33# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
34#else
35typedef AV PADNAMELIST;
36# if !PERL_VERSION_ATLEAST(5,8,0)
37typedef AV PADLIST;
38typedef AV PAD;
39# endif
40# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
41# define PadlistMAX(pl) AvFILLp (pl)
42# define PadlistNAMES(pl) (*PadlistARRAY (pl))
43# define PadARRAY AvARRAY
44# define PadMAX AvFILLp
45# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
46#endif
47
48/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
49/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
50#if PERL_VERSION_ATLEAST(5,19,0)
51# define SVt_BIND SVt_IV
52#endif
53
54#if defined(_WIN32)
55# undef HAS_GETTIMEOFDAY
18# undef setjmp 56# undef setjmp
19# undef longjmp 57# undef longjmp
20# undef _exit 58# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 59# define setjmp _setjmp /* deep magic */
22#else 60#else
23# include <inttypes.h> /* most portable stdint.h */ 61# include <inttypes.h> /* most portable stdint.h */
24#endif 62#endif
25 63
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 64/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 65static int cctx_max_idle = 4;
55 66
56#define PERL_VERSION_ATLEAST(a,b,c) \ 67#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 68# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD
111#endif
112
113#ifndef CORO_STACKGUARD
114# define CORO_STACKGUARD 0
115#endif 69#endif
116 70
117/* prefer perl internal functions over our own? */ 71/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 72#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 73# define CORO_PREFER_PERL_FUNCTIONS 0
… …
127#else 81#else
128# define dSTACKLEVEL volatile void *stacklevel 82# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 83# define STACKLEVEL ((void *)&stacklevel)
130#endif 84#endif
131 85
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 86#define IN_DESTRUCT PL_dirty
133
134#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
138#else
139# define attribute(x)
140# define expect(expr,value) (expr)
141# define INLINE static
142#endif
143
144#define expect_false(expr) expect ((expr) != 0, 0)
145#define expect_true(expr) expect ((expr) != 0, 1)
146
147#define NOINLINE attribute ((noinline))
148 87
149#include "CoroAPI.h" 88#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */ 89#define GCoroAPI (&coroapi) /* very sneaky */
151 90
152#ifdef USE_ITHREADS 91#ifdef USE_ITHREADS
153# if CORO_PTHREAD 92# if CORO_PTHREAD
154static void *coro_thx; 93static void *coro_thx;
155# endif 94# endif
156#endif 95#endif
157 96
97#ifdef __linux
98# include <time.h> /* for timespec */
99# include <syscall.h> /* for SYS_* */
100# ifdef SYS_clock_gettime
101# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
102# define CORO_CLOCK_MONOTONIC 1
103# define CORO_CLOCK_THREAD_CPUTIME_ID 3
104# endif
105#endif
106
158static double (*nvtime)(); /* so why doesn't it take void? */ 107static double (*nvtime)(); /* so why doesn't it take void? */
108static void (*u2time)(pTHX_ UV ret[2]);
159 109
160/* we hijack an hopefully unused CV flag for our purposes */ 110/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 111#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 112static OP *pp_slf (pTHX);
113static void slf_destroy (pTHX_ struct coro *coro);
163 114
164static U32 cctx_gen; 115static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 116static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 117static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 118static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 119static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 120static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 121static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 122
123static AV *av_destroy; /* destruction queue */
124static SV *sv_manager; /* the manager coro */
125static SV *sv_idle; /* $Coro::idle */
126
172static GV *irsgv; /* $/ */ 127static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 128static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 129static SV *rv_diehook;
175static SV *rv_warnhook; 130static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 131static HV *hv_sig; /* %SIG */
177 132
178/* async_pool helper stuff */ 133/* async_pool helper stuff */
179static SV *sv_pool_rss; 134static SV *sv_pool_rss;
180static SV *sv_pool_size; 135static SV *sv_pool_size;
136static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 137static AV *av_async_pool; /* idle pool */
138static SV *sv_Coro; /* class string */
139static CV *cv_pool_handler;
182 140
183/* Coro::AnyEvent */ 141/* Coro::AnyEvent */
184static SV *sv_activity; 142static SV *sv_activity;
185 143
144/* enable processtime/realtime profiling */
145static char enable_times;
146typedef U32 coro_ts[2];
147static coro_ts time_real, time_cpu;
148static char times_valid;
149
186static struct coro_cctx *cctx_first; 150static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 151static int cctx_count, cctx_idle;
188 152
189enum { 153enum
154{
190 CC_MAPPED = 0x01, 155 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 156 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 157 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 158 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 159 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
199typedef struct coro_cctx 164typedef struct coro_cctx
200{ 165{
201 struct coro_cctx *next; 166 struct coro_cctx *next;
202 167
203 /* the stack */ 168 /* the stack */
204 void *sptr; 169 struct coro_stack stack;
205 size_t ssize;
206 170
207 /* cpu state */ 171 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 172 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
173#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 174 JMPENV *idle_te; /* same as idle_sp, but for top_env */
175#endif
210 JMPENV *top_env; 176 JMPENV *top_env;
211 coro_context cctx; 177 coro_context cctx;
212 178
213 U32 gen; 179 U32 gen;
214#if CORO_USE_VALGRIND 180#if CORO_USE_VALGRIND
215 int valgrind_id; 181 int valgrind_id;
216#endif 182#endif
217 unsigned char flags; 183 unsigned char flags;
218} coro_cctx; 184} coro_cctx;
219 185
186static coro_cctx *cctx_current; /* the currently running cctx */
187
188/*****************************************************************************/
189
190static MGVTBL coro_state_vtbl;
191
220enum { 192enum
193{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 194 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 195 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 196 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 197 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
198 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
199 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 200};
226 201
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 202/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 203typedef struct
229{ 204{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 205 #define VARx(name,expr,type) type name;
235# include "state.h" 206 #include "state.h"
236#undef VAR
237} perl_slots; 207} perl_slots;
238 208
209/* how many context stack entries do we need for perl_slots */
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 210#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 211
241/* this is a structure representing a perl-level coroutine */ 212/* this is a structure representing a perl-level coroutine */
242struct coro { 213struct coro
214{
243 /* the C coroutine allocated to this perl coroutine, if any */ 215 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 216 coro_cctx *cctx;
217
218 /* ready queue */
219 struct coro *next_ready;
245 220
246 /* state data */ 221 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 222 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 223 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 224 perl_slots *slot; /* basically the saved sp */
250 225
226 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 227 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 228 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 229 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 230
257 /* statistics */ 231 /* statistics */
258 int usecount; /* number of transfers to this coro */ 232 int usecount; /* number of transfers to this coro */
259 233
260 /* coro process data */ 234 /* coro process data */
261 int prio; 235 int prio;
262 SV *except; /* exception to be thrown */ 236 SV *except; /* exception to be thrown */
237 SV *rouse_cb; /* last rouse callback */
238 AV *on_destroy; /* callbacks or coros to notify on destroy */
239 AV *status; /* the exit status list */
263 240
264 /* async_pool */ 241 /* async_pool */
265 SV *saved_deffh; 242 SV *saved_deffh;
243 SV *invoke_cb;
244 AV *invoke_av;
245
246 /* on_enter/on_leave */
247 AV *on_enter;
248 AV *on_leave;
249
250 /* swap_sv */
251 AV *swap_sv;
252
253 /* times */
254 coro_ts t_cpu, t_real;
266 255
267 /* linked list */ 256 /* linked list */
268 struct coro *next, *prev; 257 struct coro *next, *prev;
269}; 258};
270 259
271typedef struct coro *Coro__State; 260typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 261typedef struct coro *Coro__State_or_hashref;
273 262
274/* the following variables are effectively part of the perl context */ 263/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */ 264/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */ 265/* the main reason we don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */ 266static struct CoroSLF slf_frame; /* the current slf frame */
278 267
279/** Coro ********************************************************************/ 268/** Coro ********************************************************************/
280 269
281#define PRIO_MAX 3 270#define CORO_PRIO_MAX 3
282#define PRIO_HIGH 1 271#define CORO_PRIO_HIGH 1
283#define PRIO_NORMAL 0 272#define CORO_PRIO_NORMAL 0
284#define PRIO_LOW -1 273#define CORO_PRIO_LOW -1
285#define PRIO_IDLE -3 274#define CORO_PRIO_IDLE -3
286#define PRIO_MIN -4 275#define CORO_PRIO_MIN -4
287 276
288/* for Coro.pm */ 277/* for Coro.pm */
289static SV *coro_current; 278static SV *coro_current;
290static SV *coro_readyhook; 279static SV *coro_readyhook;
291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 280static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
281static CV *cv_coro_run;
292static struct coro *coro_first; 282static struct coro *coro_first;
293#define coro_nready coroapi.nready 283#define coro_nready coroapi.nready
294 284
285/** JIT *********************************************************************/
286
287#if CORO_JIT
288 /* APPLE doesn't have mmap though */
289 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
290 #ifndef CORO_JIT_TYPE
291 #if ECB_AMD64 && CORO_JIT_UNIXY
292 #define CORO_JIT_TYPE "amd64-unix"
293 #elif __i386 && CORO_JIT_UNIXY
294 #define CORO_JIT_TYPE "x86-unix"
295 #endif
296 #endif
297#endif
298
299#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
300 #undef CORO_JIT
301#endif
302
303#if CORO_JIT
304 typedef void (*load_save_perl_slots_type)(perl_slots *);
305 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
306#endif
307
308/** Coro::Select ************************************************************/
309
310static OP *(*coro_old_pp_sselect) (pTHX);
311static SV *coro_select_select;
312
313/* horrible hack, but if it works... */
314static OP *
315coro_pp_sselect (pTHX)
316{
317 dSP;
318 PUSHMARK (SP - 4); /* fake argument list */
319 XPUSHs (coro_select_select);
320 PUTBACK;
321
322 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
323 PL_op->op_flags |= OPf_STACKED;
324 PL_op->op_private = 0;
325 return PL_ppaddr [OP_ENTERSUB](aTHX);
326}
327
328/** time stuff **************************************************************/
329
330#ifdef HAS_GETTIMEOFDAY
331
332ecb_inline void
333coro_u2time (pTHX_ UV ret[2])
334{
335 struct timeval tv;
336 gettimeofday (&tv, 0);
337
338 ret [0] = tv.tv_sec;
339 ret [1] = tv.tv_usec;
340}
341
342ecb_inline double
343coro_nvtime (void)
344{
345 struct timeval tv;
346 gettimeofday (&tv, 0);
347
348 return tv.tv_sec + tv.tv_usec * 1e-6;
349}
350
351ecb_inline void
352time_init (pTHX)
353{
354 nvtime = coro_nvtime;
355 u2time = coro_u2time;
356}
357
358#else
359
360ecb_inline void
361time_init (pTHX)
362{
363 SV **svp;
364
365 require_pv ("Time/HiRes.pm");
366
367 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
368
369 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
370 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
371
372 nvtime = INT2PTR (double (*)(), SvIV (*svp));
373
374 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
375 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
376}
377
378#endif
379
295/** lowlevel stuff **********************************************************/ 380/** lowlevel stuff **********************************************************/
296 381
297static SV * 382static SV * ecb_noinline
298coro_get_sv (pTHX_ const char *name, int create) 383coro_get_sv (pTHX_ const char *name, int create)
299{ 384{
300#if PERL_VERSION_ATLEAST (5,10,0) 385#if PERL_VERSION_ATLEAST (5,10,0)
301 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 386 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
302 get_sv (name, create); 387 get_sv (name, create);
303#endif 388#endif
304 return get_sv (name, create); 389 return get_sv (name, create);
305} 390}
306 391
307static AV * 392static AV * ecb_noinline
308coro_get_av (pTHX_ const char *name, int create) 393coro_get_av (pTHX_ const char *name, int create)
309{ 394{
310#if PERL_VERSION_ATLEAST (5,10,0) 395#if PERL_VERSION_ATLEAST (5,10,0)
311 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 396 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
312 get_av (name, create); 397 get_av (name, create);
313#endif 398#endif
314 return get_av (name, create); 399 return get_av (name, create);
315} 400}
316 401
317static HV * 402static HV * ecb_noinline
318coro_get_hv (pTHX_ const char *name, int create) 403coro_get_hv (pTHX_ const char *name, int create)
319{ 404{
320#if PERL_VERSION_ATLEAST (5,10,0) 405#if PERL_VERSION_ATLEAST (5,10,0)
321 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 406 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
322 get_hv (name, create); 407 get_hv (name, create);
323#endif 408#endif
324 return get_hv (name, create); 409 return get_hv (name, create);
325} 410}
326 411
327static AV * 412ecb_inline void
413coro_times_update (void)
414{
415#ifdef coro_clock_gettime
416 struct timespec ts;
417
418 ts.tv_sec = ts.tv_nsec = 0;
419 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
420 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
421
422 ts.tv_sec = ts.tv_nsec = 0;
423 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
424 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
425#else
426 dTHX;
427 UV tv[2];
428
429 u2time (aTHX_ tv);
430 time_real [0] = tv [0];
431 time_real [1] = tv [1] * 1000;
432#endif
433}
434
435ecb_inline void
436coro_times_add (struct coro *c)
437{
438 c->t_real [1] += time_real [1];
439 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
440 c->t_real [0] += time_real [0];
441
442 c->t_cpu [1] += time_cpu [1];
443 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
444 c->t_cpu [0] += time_cpu [0];
445}
446
447ecb_inline void
448coro_times_sub (struct coro *c)
449{
450 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
451 c->t_real [1] -= time_real [1];
452 c->t_real [0] -= time_real [0];
453
454 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
455 c->t_cpu [1] -= time_cpu [1];
456 c->t_cpu [0] -= time_cpu [0];
457}
458
459/*****************************************************************************/
460/* magic glue */
461
462#define CORO_MAGIC_type_cv 26
463#define CORO_MAGIC_type_state PERL_MAGIC_ext
464
465#define CORO_MAGIC_NN(sv, type) \
466 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
467 ? SvMAGIC (sv) \
468 : mg_find (sv, type))
469
470#define CORO_MAGIC(sv, type) \
471 (ecb_expect_true (SvMAGIC (sv)) \
472 ? CORO_MAGIC_NN (sv, type) \
473 : 0)
474
475#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
476#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
477
478ecb_inline MAGIC *
479SvSTATEhv_p (pTHX_ SV *coro)
480{
481 MAGIC *mg;
482
483 if (ecb_expect_true (
484 SvTYPE (coro) == SVt_PVHV
485 && (mg = CORO_MAGIC_state (coro))
486 && mg->mg_virtual == &coro_state_vtbl
487 ))
488 return mg;
489
490 return 0;
491}
492
493ecb_inline struct coro *
494SvSTATE_ (pTHX_ SV *coro)
495{
496 MAGIC *mg;
497
498 if (SvROK (coro))
499 coro = SvRV (coro);
500
501 mg = SvSTATEhv_p (aTHX_ coro);
502 if (!mg)
503 croak ("Coro::State object required");
504
505 return (struct coro *)mg->mg_ptr;
506}
507
508#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
509
510/* faster than SvSTATE, but expects a coroutine hv */
511#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
512#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
513
514/*****************************************************************************/
515/* padlist management and caching */
516
517ecb_inline PADLIST *
328coro_clone_padlist (pTHX_ CV *cv) 518coro_derive_padlist (pTHX_ CV *cv)
329{ 519{
330 AV *padlist = CvPADLIST (cv); 520 PADLIST *padlist = CvPADLIST (cv);
331 AV *newpadlist, *newpad; 521 PADLIST *newpadlist;
522 PAD *newpad;
523 PADOFFSET off = PadlistMAX (padlist) + 1;
332 524
333 newpadlist = newAV (); 525#if NEWPADAPI
526
527 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
528 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
529 while (!PadlistARRAY (padlist)[off - 1])
530 --off;
531
532 Perl_pad_push (aTHX_ padlist, off);
533
534 newpad = PadlistARRAY (padlist)[off];
535 PadlistARRAY (padlist)[off] = 0;
536
537#else
538
539#if PERL_VERSION_ATLEAST (5,10,0)
540 Perl_pad_push (aTHX_ padlist, off);
541#else
542 Perl_pad_push (aTHX_ padlist, off, 1);
543#endif
544
545 newpad = PadlistARRAY (padlist)[off];
546 PadlistMAX (padlist) = off - 1;
547
548#endif
549
550 newPADLIST (newpadlist);
551#if !PERL_VERSION_ATLEAST(5,15,3)
552 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
334 AvREAL_off (newpadlist); 553 AvREAL_off (newpadlist);
335#if PERL_VERSION_ATLEAST (5,10,0)
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
337#else
338 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
339#endif 554#endif
340 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
341 --AvFILLp (padlist);
342 555
343 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 556 /* Already extended to 2 elements by newPADLIST. */
344 av_store (newpadlist, 1, (SV *)newpad); 557 PadlistMAX (newpadlist) = 1;
558 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
559 PadlistARRAY (newpadlist)[1] = newpad;
345 560
346 return newpadlist; 561 return newpadlist;
347} 562}
348 563
349static void 564ecb_inline void
350free_padlist (pTHX_ AV *padlist) 565free_padlist (pTHX_ PADLIST *padlist)
351{ 566{
352 /* may be during global destruction */ 567 /* may be during global destruction */
353 if (SvREFCNT (padlist)) 568 if (!IN_DESTRUCT)
354 { 569 {
355 I32 i = AvFILLp (padlist); 570 I32 i = PadlistMAX (padlist);
356 while (i >= 0) 571
572 while (i > 0) /* special-case index 0 */
357 { 573 {
358 SV **svp = av_fetch (padlist, i--, FALSE); 574 /* we try to be extra-careful here */
575 PAD *pad = PadlistARRAY (padlist)[i--];
576
359 if (svp) 577 if (pad)
360 { 578 {
361 SV *sv; 579 I32 j = PadMAX (pad);
362 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 580
581 while (j >= 0)
363 SvREFCNT_dec (sv); 582 SvREFCNT_dec (PadARRAY (pad)[j--]);
364 583
584 PadMAX (pad) = -1;
365 SvREFCNT_dec (*svp); 585 SvREFCNT_dec (pad);
366 } 586 }
367 } 587 }
368 588
589 SvREFCNT_dec (PadlistNAMES (padlist));
590
591#if NEWPADAPI
592 Safefree (PadlistARRAY (padlist));
593 Safefree (padlist);
594#else
595 AvFILLp (padlist) = -1;
596 AvREAL_off (padlist);
369 SvREFCNT_dec ((SV*)padlist); 597 SvREFCNT_dec ((SV*)padlist);
598#endif
370 } 599 }
371} 600}
372 601
373static int 602static int
374coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 603coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
375{ 604{
376 AV *padlist; 605 PADLIST *padlist;
377 AV *av = (AV *)mg->mg_obj; 606 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
607 size_t len = *(size_t *)mg->mg_ptr;
378 608
379 /* casting is fun. */ 609 /* perl manages to free our internal AV and _then_ call us */
380 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 610 if (IN_DESTRUCT)
611 return 0;
612
613 while (len--)
381 free_padlist (aTHX_ padlist); 614 free_padlist (aTHX_ padlists[len]);
382
383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
384 615
385 return 0; 616 return 0;
386} 617}
387
388#define CORO_MAGIC_type_cv 26
389#define CORO_MAGIC_type_state PERL_MAGIC_ext
390 618
391static MGVTBL coro_cv_vtbl = { 619static MGVTBL coro_cv_vtbl = {
392 0, 0, 0, 0, 620 0, 0, 0, 0,
393 coro_cv_free 621 coro_cv_free
394}; 622};
395 623
396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
398 ? SvMAGIC (sv) \
399 : mg_find (sv, type))
400
401#define CORO_MAGIC(sv, type) \
402 (expect_true (SvMAGIC (sv)) \
403 ? CORO_MAGIC_NN (sv, type) \
404 : 0)
405
406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
408
409INLINE struct coro *
410SvSTATE_ (pTHX_ SV *coro)
411{
412 HV *stash;
413 MAGIC *mg;
414
415 if (SvROK (coro))
416 coro = SvRV (coro);
417
418 if (expect_false (SvTYPE (coro) != SVt_PVHV))
419 croak ("Coro::State object required");
420
421 stash = SvSTASH (coro);
422 if (expect_false (stash != coro_stash && stash != coro_state_stash))
423 {
424 /* very slow, but rare, check */
425 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
426 croak ("Coro::State object required");
427 }
428
429 mg = CORO_MAGIC_state (coro);
430 return (struct coro *)mg->mg_ptr;
431}
432
433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
438
439/* the next two functions merely cache the padlists */ 624/* the next two functions merely cache the padlists */
440static void 625ecb_inline void
441get_padlist (pTHX_ CV *cv) 626get_padlist (pTHX_ CV *cv)
442{ 627{
443 MAGIC *mg = CORO_MAGIC_cv (cv); 628 MAGIC *mg = CORO_MAGIC_cv (cv);
444 AV *av; 629 size_t *lenp;
445 630
446 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 631 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
447 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 632 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
448 else 633 else
449 { 634 {
450#if CORO_PREFER_PERL_FUNCTIONS 635#if CORO_PREFER_PERL_FUNCTIONS
451 /* this is probably cleaner? but also slower! */ 636 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */ 637 /* in practise, it seems to be less stable */
453 CV *cp = Perl_cv_clone (cv); 638 CV *cp = Perl_cv_clone (aTHX_ cv);
454 CvPADLIST (cv) = CvPADLIST (cp); 639 CvPADLIST (cv) = CvPADLIST (cp);
455 CvPADLIST (cp) = 0; 640 CvPADLIST (cp) = 0;
456 SvREFCNT_dec (cp); 641 SvREFCNT_dec (cp);
457#else 642#else
458 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 643 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
459#endif 644#endif
460 } 645 }
461} 646}
462 647
463static void 648ecb_inline void
464put_padlist (pTHX_ CV *cv) 649put_padlist (pTHX_ CV *cv)
465{ 650{
466 MAGIC *mg = CORO_MAGIC_cv (cv); 651 MAGIC *mg = CORO_MAGIC_cv (cv);
467 AV *av;
468 652
469 if (expect_false (!mg)) 653 if (ecb_expect_false (!mg))
654 {
470 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 655 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
656 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
657 mg->mg_len = 1; /* so mg_free frees mg_ptr */
658 }
659 else
660 Renew (mg->mg_ptr,
661 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
662 char);
471 663
472 av = (AV *)mg->mg_obj; 664 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
473
474 if (expect_false (AvFILLp (av) >= AvMAX (av)))
475 av_extend (av, AvMAX (av) + 1);
476
477 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
478} 665}
479 666
480/** load & save, init *******************************************************/ 667/** load & save, init *******************************************************/
668
669ecb_inline void
670swap_sv (SV *a, SV *b)
671{
672 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
673 SV tmp;
674
675 /* swap sv_any */
676 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
677
678 /* swap sv_flags */
679 SvFLAGS (&tmp) = SvFLAGS (a);
680 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
681 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
682
683#if PERL_VERSION_ATLEAST (5,10,0)
684 /* perl 5.10 and later complicates this _quite_ a bit, but it also
685 * is much faster, so no quarrels here. alternatively, we could
686 * sv_upgrade to avoid this.
687 */
688 {
689 /* swap sv_u */
690 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
691
692 /* if SvANY points to the head, we need to adjust the pointers,
693 * as the pointer for a still points to b, and maybe vice versa.
694 */
695 #define svany_in_head(type) \
696 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
697
698 if (svany_in_head (SvTYPE (a)))
699 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
700
701 if (svany_in_head (SvTYPE (b)))
702 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
703 }
704#endif
705}
706
707/* swap sv heads, at least logically */
708static void
709swap_svs (pTHX_ Coro__State c)
710{
711 int i;
712
713 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
714 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
715}
716
717#define SWAP_SVS(coro) \
718 if (ecb_expect_false ((coro)->swap_sv)) \
719 swap_svs (aTHX_ (coro))
720
721static void
722on_enterleave_call (pTHX_ SV *cb);
481 723
482static void 724static void
483load_perl (pTHX_ Coro__State c) 725load_perl (pTHX_ Coro__State c)
484{ 726{
485 perl_slots *slot = c->slot; 727 perl_slots *slot = c->slot;
486 c->slot = 0; 728 c->slot = 0;
487 729
488 PL_mainstack = c->mainstack; 730 PL_mainstack = c->mainstack;
489 731
490 GvSV (PL_defgv) = slot->defsv; 732#if CORO_JIT
491 GvAV (PL_defgv) = slot->defav; 733 load_perl_slots (slot);
492 GvSV (PL_errgv) = slot->errsv; 734#else
493 GvSV (irsgv) = slot->irsgv;
494
495 #define VAR(name,type) PL_ ## name = slot->name; 735 #define VARx(name,expr,type) expr = slot->name;
496 # include "state.h" 736 #include "state.h"
497 #undef VAR 737#endif
498 738
499 { 739 {
500 dSP; 740 dSP;
501 741
502 CV *cv; 742 CV *cv;
503 743
504 /* now do the ugly restore mess */ 744 /* now do the ugly restore mess */
505 while (expect_true (cv = (CV *)POPs)) 745 while (ecb_expect_true (cv = (CV *)POPs))
506 { 746 {
507 put_padlist (aTHX_ cv); /* mark this padlist as available */ 747 put_padlist (aTHX_ cv); /* mark this padlist as available */
508 CvDEPTH (cv) = PTR2IV (POPs); 748 CvDEPTH (cv) = PTR2IV (POPs);
509 CvPADLIST (cv) = (AV *)POPs; 749 CvPADLIST (cv) = (PADLIST *)POPs;
510 } 750 }
511 751
512 PUTBACK; 752 PUTBACK;
513 } 753 }
514 754
515 slf_frame = c->slf_frame; 755 slf_frame = c->slf_frame;
516 CORO_THROW = c->except; 756 CORO_THROW = c->except;
757
758 if (ecb_expect_false (enable_times))
759 {
760 if (ecb_expect_false (!times_valid))
761 coro_times_update ();
762
763 coro_times_sub (c);
764 }
765
766 if (ecb_expect_false (c->on_enter))
767 {
768 int i;
769
770 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
771 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
772 }
773
774 SWAP_SVS (c);
517} 775}
518 776
519static void 777static void
520save_perl (pTHX_ Coro__State c) 778save_perl (pTHX_ Coro__State c)
521{ 779{
780 SWAP_SVS (c);
781
782 if (ecb_expect_false (c->on_leave))
783 {
784 int i;
785
786 for (i = AvFILLp (c->on_leave); i >= 0; --i)
787 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
788 }
789
790 times_valid = 0;
791
792 if (ecb_expect_false (enable_times))
793 {
794 coro_times_update (); times_valid = 1;
795 coro_times_add (c);
796 }
797
522 c->except = CORO_THROW; 798 c->except = CORO_THROW;
523 c->slf_frame = slf_frame; 799 c->slf_frame = slf_frame;
524 800
525 { 801 {
526 dSP; 802 dSP;
… …
535 811
536 XPUSHs (Nullsv); 812 XPUSHs (Nullsv);
537 /* this loop was inspired by pp_caller */ 813 /* this loop was inspired by pp_caller */
538 for (;;) 814 for (;;)
539 { 815 {
540 while (expect_true (cxix >= 0)) 816 while (ecb_expect_true (cxix >= 0))
541 { 817 {
542 PERL_CONTEXT *cx = &ccstk[cxix--]; 818 PERL_CONTEXT *cx = &ccstk[cxix--];
543 819
544 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 820 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
545 { 821 {
546 CV *cv = cx->blk_sub.cv; 822 CV *cv = cx->blk_sub.cv;
547 823
548 if (expect_true (CvDEPTH (cv))) 824 if (ecb_expect_true (CvDEPTH (cv)))
549 { 825 {
550 EXTEND (SP, 3); 826 EXTEND (SP, 3);
551 PUSHs ((SV *)CvPADLIST (cv)); 827 PUSHs ((SV *)CvPADLIST (cv));
552 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 828 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
553 PUSHs ((SV *)cv); 829 PUSHs ((SV *)cv);
… …
556 get_padlist (aTHX_ cv); 832 get_padlist (aTHX_ cv);
557 } 833 }
558 } 834 }
559 } 835 }
560 836
561 if (expect_true (top_si->si_type == PERLSI_MAIN)) 837 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
562 break; 838 break;
563 839
564 top_si = top_si->si_prev; 840 top_si = top_si->si_prev;
565 ccstk = top_si->si_cxstack; 841 ccstk = top_si->si_cxstack;
566 cxix = top_si->si_cxix; 842 cxix = top_si->si_cxix;
… …
568 844
569 PUTBACK; 845 PUTBACK;
570 } 846 }
571 847
572 /* allocate some space on the context stack for our purposes */ 848 /* allocate some space on the context stack for our purposes */
573 /* we manually unroll here, as usually 2 slots is enough */ 849 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
574 if (SLOT_COUNT >= 1) CXINC;
575 if (SLOT_COUNT >= 2) CXINC;
576 if (SLOT_COUNT >= 3) CXINC;
577 { 850 {
578 int i; 851 unsigned int i;
852
579 for (i = 3; i < SLOT_COUNT; ++i) 853 for (i = 0; i < SLOT_COUNT; ++i)
580 CXINC; 854 CXINC;
581 } 855
582 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 856 cxstack_ix -= SLOT_COUNT; /* undo allocation */
857 }
583 858
584 c->mainstack = PL_mainstack; 859 c->mainstack = PL_mainstack;
585 860
586 { 861 {
587 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 862 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
588 863
589 slot->defav = GvAV (PL_defgv); 864#if CORO_JIT
590 slot->defsv = DEFSV; 865 save_perl_slots (slot);
591 slot->errsv = ERRSV; 866#else
592 slot->irsgv = GvSV (irsgv);
593
594 #define VAR(name,type) slot->name = PL_ ## name; 867 #define VARx(name,expr,type) slot->name = expr;
595 # include "state.h" 868 #include "state.h"
596 #undef VAR 869#endif
597 } 870 }
598} 871}
599 872
600/* 873/*
601 * allocate various perl stacks. This is almost an exact copy 874 * allocate various perl stacks. This is almost an exact copy
602 * of perl.c:init_stacks, except that it uses less memory 875 * of perl.c:init_stacks, except that it uses less memory
603 * on the (sometimes correct) assumption that coroutines do 876 * on the (sometimes correct) assumption that coroutines do
604 * not usually need a lot of stackspace. 877 * not usually need a lot of stackspace.
605 */ 878 */
606#if CORO_PREFER_PERL_FUNCTIONS 879#if CORO_PREFER_PERL_FUNCTIONS
607# define coro_init_stacks init_stacks 880# define coro_init_stacks(thx) init_stacks ()
608#else 881#else
609static void 882static void
610coro_init_stacks (pTHX) 883coro_init_stacks (pTHX)
611{ 884{
612 PL_curstackinfo = new_stackinfo(32, 8); 885 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
613 PL_curstackinfo->si_type = PERLSI_MAIN; 886 PL_curstackinfo->si_type = PERLSI_MAIN;
614 PL_curstack = PL_curstackinfo->si_stack; 887 PL_curstack = PL_curstackinfo->si_stack;
615 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 888 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
616 889
617 PL_stack_base = AvARRAY(PL_curstack); 890 PL_stack_base = AvARRAY(PL_curstack);
… …
632#endif 905#endif
633 906
634 New(54,PL_scopestack,8,I32); 907 New(54,PL_scopestack,8,I32);
635 PL_scopestack_ix = 0; 908 PL_scopestack_ix = 0;
636 PL_scopestack_max = 8; 909 PL_scopestack_max = 8;
910#if HAS_SCOPESTACK_NAME
911 New(54,PL_scopestack_name,8,const char*);
912#endif
637 913
638 New(54,PL_savestack,24,ANY); 914 New(54,PL_savestack,24,ANY);
639 PL_savestack_ix = 0; 915 PL_savestack_ix = 0;
640 PL_savestack_max = 24; 916 PL_savestack_max = 24;
641 917
… …
669 } 945 }
670 946
671 Safefree (PL_tmps_stack); 947 Safefree (PL_tmps_stack);
672 Safefree (PL_markstack); 948 Safefree (PL_markstack);
673 Safefree (PL_scopestack); 949 Safefree (PL_scopestack);
950#if HAS_SCOPESTACK_NAME
951 Safefree (PL_scopestack_name);
952#endif
674 Safefree (PL_savestack); 953 Safefree (PL_savestack);
675#if !PERL_VERSION_ATLEAST (5,10,0) 954#if !PERL_VERSION_ATLEAST (5,10,0)
676 Safefree (PL_retstack); 955 Safefree (PL_retstack);
677#endif 956#endif
678} 957}
679 958
959#define CORO_RSS \
960 rss += sizeof (SYM (curstackinfo)); \
961 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
962 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
963 rss += SYM (tmps_max) * sizeof (SV *); \
964 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
965 rss += SYM (scopestack_max) * sizeof (I32); \
966 rss += SYM (savestack_max) * sizeof (ANY);
967
680static size_t 968static size_t
681coro_rss (pTHX_ struct coro *coro) 969coro_rss (pTHX_ struct coro *coro)
682{ 970{
683 size_t rss = sizeof (*coro); 971 size_t rss = sizeof (*coro);
684 972
685 if (coro->mainstack) 973 if (coro->mainstack)
686 { 974 {
687 perl_slots tmp_slot;
688 perl_slots *slot;
689
690 if (coro->flags & CF_RUNNING) 975 if (coro->flags & CF_RUNNING)
691 { 976 {
692 slot = &tmp_slot; 977 #define SYM(sym) PL_ ## sym
693 978 CORO_RSS;
694 #define VAR(name,type) slot->name = PL_ ## name;
695 # include "state.h"
696 #undef VAR 979 #undef SYM
697 } 980 }
698 else 981 else
699 slot = coro->slot;
700
701 if (slot)
702 { 982 {
703 rss += sizeof (slot->curstackinfo); 983 #define SYM(sym) coro->slot->sym
704 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 984 CORO_RSS;
705 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 985 #undef SYM
706 rss += slot->tmps_max * sizeof (SV *);
707 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
708 rss += slot->scopestack_max * sizeof (I32);
709 rss += slot->savestack_max * sizeof (ANY);
710
711#if !PERL_VERSION_ATLEAST (5,10,0)
712 rss += slot->retstack_max * sizeof (OP *);
713#endif
714 } 986 }
715 } 987 }
716 988
717 return rss; 989 return rss;
718} 990}
… …
731#endif 1003#endif
732 1004
733/* 1005/*
734 * This overrides the default magic get method of %SIG elements. 1006 * This overrides the default magic get method of %SIG elements.
735 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1007 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
736 * and instead of tryign to save and restore the hash elements, we just provide 1008 * and instead of trying to save and restore the hash elements (extremely slow),
737 * readback here. 1009 * we just provide our own readback here.
738 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
739 * not expecting this to actually change the hook. This is a potential problem
740 * when a schedule happens then, but we ignore this.
741 */ 1010 */
742static int 1011static int ecb_cold
743coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1012coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
744{ 1013{
745 const char *s = MgPV_nolen_const (mg); 1014 const char *s = MgPV_nolen_const (mg);
746 1015
747 if (*s == '_') 1016 if (*s == '_')
748 { 1017 {
749 SV **svp = 0; 1018 SV **svp = 0;
750 1019
751 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1020 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
752 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1021 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
753 1022
754 if (svp) 1023 if (svp)
755 { 1024 {
756 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1025 SV *ssv;
1026
1027 if (!*svp)
1028 ssv = &PL_sv_undef;
1029 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1030 ssv = sv_2mortal (newRV_inc (*svp));
1031 else
1032 ssv = *svp;
1033
1034 sv_setsv (sv, ssv);
757 return 0; 1035 return 0;
758 } 1036 }
759 } 1037 }
760 1038
761 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1039 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
762} 1040}
763 1041
764static int 1042static int ecb_cold
765coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1043coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
766{ 1044{
767 const char *s = MgPV_nolen_const (mg); 1045 const char *s = MgPV_nolen_const (mg);
768 1046
769 if (*s == '_') 1047 if (*s == '_')
… …
783 } 1061 }
784 1062
785 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1063 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
786} 1064}
787 1065
788static int 1066static int ecb_cold
789coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1067coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
790{ 1068{
791 const char *s = MgPV_nolen_const (mg); 1069 const char *s = MgPV_nolen_const (mg);
792 1070
793 if (*s == '_') 1071 if (*s == '_')
… …
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1076 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799 1077
800 if (svp) 1078 if (svp)
801 { 1079 {
802 SV *old = *svp; 1080 SV *old = *svp;
803 *svp = newSVsv (sv); 1081 *svp = SvOK (sv) ? newSVsv (sv) : 0;
804 SvREFCNT_dec (old); 1082 SvREFCNT_dec (old);
805 return 0; 1083 return 0;
806 } 1084 }
807 } 1085 }
808 1086
… …
820slf_check_nop (pTHX_ struct CoroSLF *frame) 1098slf_check_nop (pTHX_ struct CoroSLF *frame)
821{ 1099{
822 return 0; 1100 return 0;
823} 1101}
824 1102
825static UNOP coro_setup_op; 1103static int
1104slf_check_repeat (pTHX_ struct CoroSLF *frame)
1105{
1106 return 1;
1107}
826 1108
827static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1109static UNOP init_perl_op;
1110
1111ecb_noinline static void /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 1112init_perl (pTHX_ struct coro *coro)
829{ 1113{
830 /* 1114 /*
831 * emulate part of the perl startup here. 1115 * emulate part of the perl startup here.
832 */ 1116 */
833 coro_init_stacks (aTHX); 1117 coro_init_stacks (aTHX);
834 1118
835 PL_runops = RUNOPS_DEFAULT; 1119 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 1120 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 1121 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 1122 PL_comppad = 0;
1123 PL_comppad_name = 0;
1124 PL_comppad_name_fill = 0;
1125 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 1126 PL_curpm = 0;
840 PL_curpad = 0; 1127 PL_curpad = 0;
841 PL_localizing = 0; 1128 PL_localizing = 0;
842 PL_dirty = 0;
843 PL_restartop = 0; 1129 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 1130#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 1131 PL_parser = 0;
846#endif 1132#endif
1133 PL_hints = 0;
847 1134
848 /* recreate the die/warn hooks */ 1135 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1136 PL_diehook = SvREFCNT_inc (rv_diehook);
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1137 PL_warnhook = SvREFCNT_inc (rv_warnhook);
851 1138
852 GvSV (PL_defgv) = newSV (0); 1139 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 1140 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 1141 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1142 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1143 GvHV (PL_hintgv) = newHV ();
1144#if PERL_VERSION_ATLEAST (5,10,0)
1145 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1146#endif
856 PL_rs = newSVsv (GvSV (irsgv)); 1147 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1148 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 1149
859 { 1150 {
860 dSP; 1151 dSP;
861 UNOP myop; 1152 UNOP myop;
862 1153
863 Zero (&myop, 1, UNOP); 1154 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 1155 myop.op_next = Nullop;
1156 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 1157 myop.op_flags = OPf_WANT_VOID;
866 1158
867 PUSHMARK (SP); 1159 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1160 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 1161 PUTBACK;
870 PL_op = (OP *)&myop; 1162 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1163 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 1164 }
874 1165
875 /* this newly created coroutine might be run on an existing cctx which most 1166 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1167 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 1168 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1169 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1170 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1171 slf_frame.destroy = 0;
880 1172
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1173 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op; 1174 init_perl_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM; 1175 init_perl_op.op_type = OP_ENTERSUB;
884 coro_setup_op.op_ppaddr = pp_slf; 1176 init_perl_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */ 1177 /* no flags etc. required, as an init function won't be called */
886 1178
887 PL_op = (OP *)&coro_setup_op; 1179 PL_op = (OP *)&init_perl_op;
888 1180
889 /* copy throw, in case it was set before coro_setup */ 1181 /* copy throw, in case it was set before init_perl */
890 CORO_THROW = coro->except; 1182 CORO_THROW = coro->except;
891}
892 1183
1184 SWAP_SVS (coro);
1185
1186 if (ecb_expect_false (enable_times))
1187 {
1188 coro_times_update ();
1189 coro_times_sub (coro);
1190 }
1191}
1192
893static void 1193static void
894coro_destruct (pTHX_ struct coro *coro) 1194coro_unwind_stacks (pTHX)
895{ 1195{
896 if (!IN_DESTRUCT) 1196 if (!IN_DESTRUCT)
897 { 1197 {
898 /* restore all saved variables and stuff */ 1198 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1199 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1207 POPSTACK_TO (PL_mainstack);
908 1208
909 /* unwind main stack */ 1209 /* unwind main stack */
910 dounwind (-1); 1210 dounwind (-1);
911 } 1211 }
1212}
912 1213
913 SvREFCNT_dec (GvSV (PL_defgv)); 1214static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1215destroy_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1216{
916 SvREFCNT_dec (PL_defoutgv); 1217 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1218
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 1219 {
1220 SV *old_current = SvRV (coro_current);
1221 struct coro *current = SvSTATE (old_current);
1222
1223 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1224
1225 save_perl (aTHX_ current);
1226
1227 /* this will cause transfer_check to croak on block*/
1228 SvRV_set (coro_current, (SV *)coro->hv);
1229
1230 load_perl (aTHX_ coro);
1231
1232 coro_unwind_stacks (aTHX);
1233
1234 /* restore swapped sv's */
1235 SWAP_SVS (coro);
1236
1237 coro_destruct_stacks (aTHX);
1238
1239 /* now save some sv's to be free'd later */
1240 svf [0] = GvSV (PL_defgv);
1241 svf [1] = (SV *)GvAV (PL_defgv);
1242 svf [2] = GvSV (PL_errgv);
1243 svf [3] = (SV *)PL_defoutgv;
1244 svf [4] = PL_rs;
1245 svf [5] = GvSV (irsgv);
1246 svf [6] = (SV *)GvHV (PL_hintgv);
1247 svf [7] = PL_diehook;
1248 svf [8] = PL_warnhook;
1249 assert (9 == sizeof (svf) / sizeof (*svf));
1250
1251 SvRV_set (coro_current, old_current);
1252
1253 load_perl (aTHX_ current);
1254 }
1255
1256 {
1257 unsigned int i;
1258
1259 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1260 SvREFCNT_dec (svf [i]);
1261
923 SvREFCNT_dec (coro->saved_deffh); 1262 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (CORO_THROW); 1263 SvREFCNT_dec (coro->rouse_cb);
925 1264 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1265 SvREFCNT_dec (coro->invoke_av);
1266 }
927} 1267}
928 1268
929INLINE void 1269ecb_inline void
930free_coro_mortal (pTHX) 1270free_coro_mortal (pTHX)
931{ 1271{
932 if (expect_true (coro_mortal)) 1272 if (ecb_expect_true (coro_mortal))
933 { 1273 {
934 SvREFCNT_dec (coro_mortal); 1274 SvREFCNT_dec ((SV *)coro_mortal);
935 coro_mortal = 0; 1275 coro_mortal = 0;
936 } 1276 }
937} 1277}
938 1278
939static int 1279static int
940runops_trace (pTHX) 1280runops_trace (pTHX)
941{ 1281{
942 COP *oldcop = 0; 1282 COP *oldcop = 0;
943 int oldcxix = -2; 1283 int oldcxix = -2;
944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1284
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1285 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1286 {
949 PERL_ASYNC_CHECK (); 1287 PERL_ASYNC_CHECK ();
950 1288
951 if (cctx->flags & CC_TRACE_ALL) 1289 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1290 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1291 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1292 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1293 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1294 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1295 AV *av = newAV (); /* return values */
958 SV **cb; 1296 SV **cb;
… …
995 1333
996 if (PL_curcop != &PL_compiling) 1334 if (PL_curcop != &PL_compiling)
997 { 1335 {
998 SV **cb; 1336 SV **cb;
999 1337
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1338 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1339 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1340 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1341
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1342 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1343 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1344 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1345 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1346 SV *fullname = sv_2mortal (newSV (0));
1010 1347
1011 if (isGV (gv)) 1348 if (isGV (gv))
… …
1016 SAVETMPS; 1353 SAVETMPS;
1017 EXTEND (SP, 3); 1354 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1355 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1356 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1357 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1358 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1359 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1360 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1361 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1362 SPAGAIN;
1026 FREETMPS; 1363 FREETMPS;
… …
1029 } 1366 }
1030 1367
1031 oldcxix = cxstack_ix; 1368 oldcxix = cxstack_ix;
1032 } 1369 }
1033 1370
1034 if (cctx->flags & CC_TRACE_LINE) 1371 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1372 {
1036 dSP; 1373 dSP;
1037 1374
1038 PL_runops = RUNOPS_DEFAULT; 1375 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1376 ENTER;
… …
1058 1395
1059 TAINT_NOT; 1396 TAINT_NOT;
1060 return 0; 1397 return 0;
1061} 1398}
1062 1399
1063static struct coro_cctx *cctx_ssl_cctx;
1064static struct CoroSLF cctx_ssl_frame; 1400static struct CoroSLF cctx_ssl_frame;
1065 1401
1066static void 1402static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1403slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{ 1404{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0; 1405 ta->prev = 0;
1071} 1406}
1072 1407
1073static int 1408static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1409slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{ 1410{
… …
1077 1412
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1413 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079} 1414}
1080 1415
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1416/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1082static void NOINLINE 1417static void ecb_noinline
1083cctx_prepare (pTHX_ coro_cctx *cctx) 1418cctx_prepare (pTHX)
1084{ 1419{
1085 PL_top_env = &PL_start_env; 1420 PL_top_env = &PL_start_env;
1086 1421
1087 if (cctx->flags & CC_TRACE) 1422 if (cctx_current->flags & CC_TRACE)
1088 PL_runops = runops_trace; 1423 PL_runops = runops_trace;
1089 1424
1090 /* we already must be executing an SLF op, there is no other valid way 1425 /* we already must be executing an SLF op, there is no other valid way
1091 * that can lead to creation of a new cctx */ 1426 * that can lead to creation of a new cctx */
1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1427 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1428 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1094 1429
1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1430 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1096 cctx_ssl_cctx = cctx;
1097 cctx_ssl_frame = slf_frame; 1431 cctx_ssl_frame = slf_frame;
1098 1432
1099 slf_frame.prepare = slf_prepare_set_stacklevel; 1433 slf_frame.prepare = slf_prepare_set_stacklevel;
1100 slf_frame.check = slf_check_set_stacklevel; 1434 slf_frame.check = slf_check_set_stacklevel;
1101} 1435}
1102 1436
1103/* the tail of transfer: execute stuff we can only do after a transfer */ 1437/* the tail of transfer: execute stuff we can only do after a transfer */
1104INLINE void 1438ecb_inline void
1105transfer_tail (pTHX) 1439transfer_tail (pTHX)
1106{ 1440{
1107 free_coro_mortal (aTHX); 1441 free_coro_mortal (aTHX);
1442}
1443
1444/* try to exit the same way perl's main function would do */
1445/* we do not bother resetting the environment or other things *7
1446/* that are not, uhm, essential */
1447/* this obviously also doesn't work when perl is embedded */
1448static void ecb_noinline ecb_cold
1449perlish_exit (pTHX)
1450{
1451 int exitstatus = perl_destruct (PL_curinterp);
1452 perl_free (PL_curinterp);
1453 exit (exitstatus);
1108} 1454}
1109 1455
1110/* 1456/*
1111 * this is a _very_ stripped down perl interpreter ;) 1457 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1458 */
… …
1124 /* normally we would need to skip the entersub here */ 1470 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1471 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1472 /* PL_nop = PL_nop->op_next */
1127 1473
1128 /* inject a fake subroutine call to cctx_init */ 1474 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1475 cctx_prepare (aTHX);
1130 1476
1131 /* cctx_run is the alternative tail of transfer() */ 1477 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX); 1478 transfer_tail (aTHX);
1133 1479
1134 /* somebody or something will hit me for both perl_run and PL_restartop */ 1480 /* somebody or something will hit me for both perl_run and PL_restartop */
1135 PL_restartop = PL_op; 1481 PL_restartop = PL_op;
1136 perl_run (PL_curinterp); 1482 perl_run (PL_curinterp);
1483 /*
1484 * Unfortunately, there is no way to get at the return values of the
1485 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1486 * runtime errors here, as this is just a random interpreter, not a thread.
1487 */
1137 1488
1138 /* 1489 /*
1139 * If perl-run returns we assume exit() was being called or the coro 1490 * If perl-run returns we assume exit() was being called or the coro
1140 * fell off the end, which seems to be the only valid (non-bug) 1491 * fell off the end, which seems to be the only valid (non-bug)
1141 * reason for perl_run to return. We try to exit by jumping to the 1492 * reason for perl_run to return. We try to mimic whatever perl is normally
1142 * bootstrap-time "top" top_env, as we cannot restore the "main" 1493 * doing in that case. YMMV.
1143 * coroutine as Coro has no such concept
1144 */ 1494 */
1145 PL_top_env = main_top_env; 1495 perlish_exit (aTHX);
1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 } 1496 }
1148} 1497}
1149 1498
1150static coro_cctx * 1499static coro_cctx *
1151cctx_new () 1500cctx_new (void)
1152{ 1501{
1153 coro_cctx *cctx; 1502 coro_cctx *cctx;
1154 1503
1155 ++cctx_count; 1504 ++cctx_count;
1156 New (0, cctx, 1, coro_cctx); 1505 New (0, cctx, 1, coro_cctx);
… …
1162 return cctx; 1511 return cctx;
1163} 1512}
1164 1513
1165/* create a new cctx only suitable as source */ 1514/* create a new cctx only suitable as source */
1166static coro_cctx * 1515static coro_cctx *
1167cctx_new_empty () 1516cctx_new_empty (void)
1168{ 1517{
1169 coro_cctx *cctx = cctx_new (); 1518 coro_cctx *cctx = cctx_new ();
1170 1519
1171 cctx->sptr = 0; 1520 cctx->stack.sptr = 0;
1172 coro_create (&cctx->cctx, 0, 0, 0, 0); 1521 coro_create (&cctx->cctx, 0, 0, 0, 0);
1173 1522
1174 return cctx; 1523 return cctx;
1175} 1524}
1176 1525
1177/* create a new cctx suitable as destination/running a perl interpreter */ 1526/* create a new cctx suitable as destination/running a perl interpreter */
1178static coro_cctx * 1527static coro_cctx *
1179cctx_new_run () 1528cctx_new_run (void)
1180{ 1529{
1181 coro_cctx *cctx = cctx_new (); 1530 coro_cctx *cctx = cctx_new ();
1182 void *stack_start;
1183 size_t stack_size;
1184 1531
1185#if HAVE_MMAP 1532 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1186 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1187 /* mmap supposedly does allocate-on-write for us */
1188 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1189
1190 if (cctx->sptr != (void *)-1)
1191 {
1192 #if CORO_STACKGUARD
1193 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1194 #endif
1195 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1196 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1197 cctx->flags |= CC_MAPPED;
1198 } 1533 {
1199 else
1200#endif
1201 {
1202 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1203 New (0, cctx->sptr, cctx_stacksize, long);
1204
1205 if (!cctx->sptr)
1206 {
1207 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1534 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1208 _exit (EXIT_FAILURE); 1535 _exit (EXIT_FAILURE);
1209 }
1210
1211 stack_start = cctx->sptr;
1212 stack_size = cctx->ssize;
1213 } 1536 }
1214 1537
1215 #if CORO_USE_VALGRIND
1216 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1217 #endif
1218
1219 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1538 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1220 1539
1221 return cctx; 1540 return cctx;
1222} 1541}
1223 1542
1224static void 1543static void
1225cctx_destroy (coro_cctx *cctx) 1544cctx_destroy (coro_cctx *cctx)
1226{ 1545{
1227 if (!cctx) 1546 if (!cctx)
1228 return; 1547 return;
1229 1548
1549 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1550
1230 --cctx_count; 1551 --cctx_count;
1231 coro_destroy (&cctx->cctx); 1552 coro_destroy (&cctx->cctx);
1232 1553
1233 /* coro_transfer creates new, empty cctx's */ 1554 coro_stack_free (&cctx->stack);
1234 if (cctx->sptr)
1235 {
1236 #if CORO_USE_VALGRIND
1237 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1238 #endif
1239
1240#if HAVE_MMAP
1241 if (cctx->flags & CC_MAPPED)
1242 munmap (cctx->sptr, cctx->ssize);
1243 else
1244#endif
1245 Safefree (cctx->sptr);
1246 }
1247 1555
1248 Safefree (cctx); 1556 Safefree (cctx);
1249} 1557}
1250 1558
1251/* wether this cctx should be destructed */ 1559/* wether this cctx should be destructed */
1252#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1560#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1253 1561
1254static coro_cctx * 1562static coro_cctx *
1255cctx_get (pTHX) 1563cctx_get (pTHX)
1256{ 1564{
1257 while (expect_true (cctx_first)) 1565 while (ecb_expect_true (cctx_first))
1258 { 1566 {
1259 coro_cctx *cctx = cctx_first; 1567 coro_cctx *cctx = cctx_first;
1260 cctx_first = cctx->next; 1568 cctx_first = cctx->next;
1261 --cctx_idle; 1569 --cctx_idle;
1262 1570
1263 if (expect_true (!CCTX_EXPIRED (cctx))) 1571 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1264 return cctx; 1572 return cctx;
1265 1573
1266 cctx_destroy (cctx); 1574 cctx_destroy (cctx);
1267 } 1575 }
1268 1576
… …
1270} 1578}
1271 1579
1272static void 1580static void
1273cctx_put (coro_cctx *cctx) 1581cctx_put (coro_cctx *cctx)
1274{ 1582{
1275 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1583 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1276 1584
1277 /* free another cctx if overlimit */ 1585 /* free another cctx if overlimit */
1278 if (expect_false (cctx_idle >= cctx_max_idle)) 1586 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1279 { 1587 {
1280 coro_cctx *first = cctx_first; 1588 coro_cctx *first = cctx_first;
1281 cctx_first = first->next; 1589 cctx_first = first->next;
1282 --cctx_idle; 1590 --cctx_idle;
1283 1591
… …
1294static void 1602static void
1295transfer_check (pTHX_ struct coro *prev, struct coro *next) 1603transfer_check (pTHX_ struct coro *prev, struct coro *next)
1296{ 1604{
1297 /* TODO: throwing up here is considered harmful */ 1605 /* TODO: throwing up here is considered harmful */
1298 1606
1299 if (expect_true (prev != next)) 1607 if (ecb_expect_true (prev != next))
1300 { 1608 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1609 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1610 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1303 1611
1304 if (expect_false (next->flags & CF_RUNNING)) 1612 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1306
1307 if (expect_false (next->flags & CF_DESTROYED))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1613 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1309 1614
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1615#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1616 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1617 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1618#endif
1314 } 1619 }
1315} 1620}
1316 1621
1317/* always use the TRANSFER macro */ 1622/* always use the TRANSFER macro */
1318static void NOINLINE /* noinline so we have a fixed stackframe */ 1623static void ecb_noinline /* noinline so we have a fixed stackframe */
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1624transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1625{
1321 dSTACKLEVEL; 1626 dSTACKLEVEL;
1322 1627
1323 /* sometimes transfer is only called to set idle_sp */ 1628 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1629 if (ecb_expect_false (!prev))
1325 { 1630 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1631 cctx_current->idle_sp = STACKLEVEL;
1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1632 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1328 } 1633 }
1329 else if (expect_true (prev != next)) 1634 else if (ecb_expect_true (prev != next))
1330 { 1635 {
1331 coro_cctx *prev__cctx; 1636 coro_cctx *cctx_prev;
1332 1637
1333 if (expect_false (prev->flags & CF_NEW)) 1638 if (ecb_expect_false (prev->flags & CF_NEW))
1334 { 1639 {
1335 /* create a new empty/source context */ 1640 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1641 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1642 prev->flags |= CF_RUNNING;
1339 } 1643 }
1340 1644
1341 prev->flags &= ~CF_RUNNING; 1645 prev->flags &= ~CF_RUNNING;
1342 next->flags |= CF_RUNNING; 1646 next->flags |= CF_RUNNING;
1343 1647
1344 /* first get rid of the old state */ 1648 /* first get rid of the old state */
1345 save_perl (aTHX_ prev); 1649 save_perl (aTHX_ prev);
1346 1650
1347 if (expect_false (next->flags & CF_NEW)) 1651 if (ecb_expect_false (next->flags & CF_NEW))
1348 { 1652 {
1349 /* need to start coroutine */ 1653 /* need to start coroutine */
1350 next->flags &= ~CF_NEW; 1654 next->flags &= ~CF_NEW;
1351 /* setup coroutine call */ 1655 /* setup coroutine call */
1352 coro_setup (aTHX_ next); 1656 init_perl (aTHX_ next);
1353 } 1657 }
1354 else 1658 else
1355 load_perl (aTHX_ next); 1659 load_perl (aTHX_ next);
1356 1660
1357 prev__cctx = prev->cctx;
1358
1359 /* possibly untie and reuse the cctx */ 1661 /* possibly untie and reuse the cctx */
1360 if (expect_true ( 1662 if (ecb_expect_true (
1361 prev__cctx->idle_sp == STACKLEVEL 1663 cctx_current->idle_sp == STACKLEVEL
1362 && !(prev__cctx->flags & CC_TRACE) 1664 && !(cctx_current->flags & CC_TRACE)
1363 && !force_cctx 1665 && !force_cctx
1364 )) 1666 ))
1365 { 1667 {
1366 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1668 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1669 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1368 1670
1369 prev->cctx = 0;
1370
1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1671 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1672 /* without this the next cctx_get might destroy the running cctx while still in use */
1373 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1673 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1374 if (!next->cctx) 1674 if (ecb_expect_true (!next->cctx))
1375 next->cctx = cctx_get (aTHX); 1675 next->cctx = cctx_get (aTHX);
1376 1676
1377 cctx_put (prev__cctx); 1677 cctx_put (cctx_current);
1378 } 1678 }
1679 else
1680 prev->cctx = cctx_current;
1379 1681
1380 ++next->usecount; 1682 ++next->usecount;
1381 1683
1382 if (expect_true (!next->cctx)) 1684 cctx_prev = cctx_current;
1383 next->cctx = cctx_get (aTHX); 1685 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1384 1686
1385 if (expect_false (prev__cctx != next->cctx)) 1687 next->cctx = 0;
1688
1689 if (ecb_expect_false (cctx_prev != cctx_current))
1386 { 1690 {
1387 prev__cctx->top_env = PL_top_env; 1691 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1692 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1693 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1694 }
1391 1695
1392 transfer_tail (aTHX); 1696 transfer_tail (aTHX);
1393 } 1697 }
1394} 1698}
… …
1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1700#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1701#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1398 1702
1399/** high level stuff ********************************************************/ 1703/** high level stuff ********************************************************/
1400 1704
1705/* this function is actually Coro, not Coro::State, but we call it from here */
1706/* because it is convenient - but it hasn't been declared yet for that reason */
1401static int 1707static void
1708coro_call_on_destroy (pTHX_ struct coro *coro);
1709
1710static void
1402coro_state_destroy (pTHX_ struct coro *coro) 1711coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1712{
1404 if (coro->flags & CF_DESTROYED) 1713 if (coro->flags & CF_ZOMBIE)
1405 return 0; 1714 return;
1406 1715
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro); 1716 slf_destroy (aTHX_ coro);
1409 1717
1410 coro->flags |= CF_DESTROYED; 1718 coro->flags |= CF_ZOMBIE;
1411 1719
1412 if (coro->flags & CF_READY) 1720 if (coro->flags & CF_READY)
1413 { 1721 {
1414 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1722 /* reduce nready, as destroying a ready coro effectively unreadies it */
1415 /* alternative: look through all ready queues and remove the coro */ 1723 /* alternative: look through all ready queues and remove the coro */
1416 --coro_nready; 1724 --coro_nready;
1417 } 1725 }
1418 else 1726 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1727 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1728
1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1422 {
1423 struct coro temp;
1424
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1426
1427 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro);
1429
1430 coro_destruct (aTHX_ coro);
1431
1432 load_perl (aTHX_ &temp);
1433
1434 coro->slot = 0;
1435 }
1436
1437 cctx_destroy (coro->cctx);
1438 SvREFCNT_dec (coro->args);
1439
1440 if (coro->next) coro->next->prev = coro->prev; 1729 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1730 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1731 if (coro == coro_first) coro_first = coro->next;
1443 1732
1444 return 1; 1733 if (coro->mainstack
1734 && coro->mainstack != main_mainstack
1735 && coro->slot
1736 && !PL_dirty)
1737 destroy_perl (aTHX_ coro);
1738
1739 cctx_destroy (coro->cctx);
1740 SvREFCNT_dec (coro->startcv);
1741 SvREFCNT_dec (coro->args);
1742 SvREFCNT_dec (coro->swap_sv);
1743 SvREFCNT_dec (CORO_THROW);
1744
1745 coro_call_on_destroy (aTHX_ coro);
1746
1747 /* more destruction mayhem in coro_state_free */
1445} 1748}
1446 1749
1447static int 1750static int
1448coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1751coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1449{ 1752{
1450 struct coro *coro = (struct coro *)mg->mg_ptr; 1753 struct coro *coro = (struct coro *)mg->mg_ptr;
1451 mg->mg_ptr = 0; 1754 mg->mg_ptr = 0;
1452 1755
1453 coro->hv = 0;
1454
1455 if (--coro->refcnt < 0)
1456 {
1457 coro_state_destroy (aTHX_ coro); 1756 coro_state_destroy (aTHX_ coro);
1757 SvREFCNT_dec (coro->on_destroy);
1758 SvREFCNT_dec (coro->status);
1759
1458 Safefree (coro); 1760 Safefree (coro);
1459 }
1460 1761
1461 return 0; 1762 return 0;
1462} 1763}
1463 1764
1464static int 1765static int ecb_cold
1465coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1766coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1466{ 1767{
1467 struct coro *coro = (struct coro *)mg->mg_ptr; 1768 /* called when perl clones the current process the slow way (windows process emulation) */
1468 1769 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1469 ++coro->refcnt; 1770 mg->mg_ptr = 0;
1771 mg->mg_virtual = 0;
1470 1772
1471 return 0; 1773 return 0;
1472} 1774}
1473 1775
1474static MGVTBL coro_state_vtbl = { 1776static MGVTBL coro_state_vtbl = {
… …
1499 TRANSFER (ta, 1); 1801 TRANSFER (ta, 1);
1500} 1802}
1501 1803
1502/** Coro ********************************************************************/ 1804/** Coro ********************************************************************/
1503 1805
1504INLINE void 1806ecb_inline void
1505coro_enq (pTHX_ struct coro *coro) 1807coro_enq (pTHX_ struct coro *coro)
1506{ 1808{
1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1809 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1508}
1509 1810
1510INLINE SV * 1811 SvREFCNT_inc_NN (coro->hv);
1812
1813 coro->next_ready = 0;
1814 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1815 ready [1] = coro;
1816}
1817
1818ecb_inline struct coro *
1511coro_deq (pTHX) 1819coro_deq (pTHX)
1512{ 1820{
1513 int prio; 1821 int prio;
1514 1822
1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1823 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1516 if (AvFILLp (coro_ready [prio]) >= 0) 1824 {
1517 return av_shift (coro_ready [prio]); 1825 struct coro **ready = coro_ready [prio];
1826
1827 if (ready [0])
1828 {
1829 struct coro *coro = ready [0];
1830 ready [0] = coro->next_ready;
1831 return coro;
1832 }
1833 }
1518 1834
1519 return 0; 1835 return 0;
1836}
1837
1838static void
1839invoke_sv_ready_hook_helper (void)
1840{
1841 dTHX;
1842 dSP;
1843
1844 ENTER;
1845 SAVETMPS;
1846
1847 PUSHMARK (SP);
1848 PUTBACK;
1849 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1850
1851 FREETMPS;
1852 LEAVE;
1520} 1853}
1521 1854
1522static int 1855static int
1523api_ready (pTHX_ SV *coro_sv) 1856api_ready (pTHX_ SV *coro_sv)
1524{ 1857{
1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1528
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1858 struct coro *coro = SvSTATE (coro_sv);
1533 1859
1534 if (coro->flags & CF_READY) 1860 if (coro->flags & CF_READY)
1535 return 0; 1861 return 0;
1536 1862
1537 coro->flags |= CF_READY; 1863 coro->flags |= CF_READY;
1538 1864
1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro); 1865 coro_enq (aTHX_ coro);
1543 ++coro_nready;
1544 1866
1545 if (sv_hook) 1867 if (!coro_nready++)
1546 { 1868 if (coroapi.readyhook)
1547 dSP; 1869 coroapi.readyhook ();
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1555
1556 FREETMPS;
1557 LEAVE;
1558 }
1559
1560 if (xs_hook)
1561 xs_hook ();
1562 1870
1563 return 1; 1871 return 1;
1564} 1872}
1565 1873
1566static int 1874static int
1567api_is_ready (pTHX_ SV *coro_sv) 1875api_is_ready (pTHX_ SV *coro_sv)
1568{ 1876{
1569 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1877 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1570} 1878}
1571 1879
1572INLINE void 1880/* expects to own a reference to next->hv */
1881ecb_inline void
1573prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1882prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1574{ 1883{
1575 SV *prev_sv, *next_sv;
1576
1577 for (;;)
1578 {
1579 next_sv = coro_deq (aTHX);
1580
1581 /* nothing to schedule: call the idle handler */
1582 if (expect_false (!next_sv))
1583 {
1584 dSP;
1585
1586 ENTER;
1587 SAVETMPS;
1588
1589 PUSHMARK (SP);
1590 PUTBACK;
1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1592
1593 FREETMPS;
1594 LEAVE;
1595 continue;
1596 }
1597
1598 ta->next = SvSTATE_hv (next_sv);
1599
1600 /* cannot transfer to destroyed coros, skip and look for next */
1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1602 {
1603 SvREFCNT_dec (next_sv);
1604 /* coro_nready has already been taken care of by destroy */
1605 continue;
1606 }
1607
1608 --coro_nready;
1609 break;
1610 }
1611
1612 /* free this only after the transfer */
1613 prev_sv = SvRV (coro_current); 1884 SV *prev_sv = SvRV (coro_current);
1885
1614 ta->prev = SvSTATE_hv (prev_sv); 1886 ta->prev = SvSTATE_hv (prev_sv);
1887 ta->next = next;
1888
1615 TRANSFER_CHECK (*ta); 1889 TRANSFER_CHECK (*ta);
1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1890
1617 ta->next->flags &= ~CF_READY;
1618 SvRV_set (coro_current, next_sv); 1891 SvRV_set (coro_current, (SV *)next->hv);
1619 1892
1620 free_coro_mortal (aTHX); 1893 free_coro_mortal (aTHX);
1621 coro_mortal = prev_sv; 1894 coro_mortal = prev_sv;
1622} 1895}
1623 1896
1624INLINE void 1897static void
1898prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1899{
1900 for (;;)
1901 {
1902 struct coro *next = coro_deq (aTHX);
1903
1904 if (ecb_expect_true (next))
1905 {
1906 /* cannot transfer to destroyed coros, skip and look for next */
1907 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1908 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1909 else
1910 {
1911 next->flags &= ~CF_READY;
1912 --coro_nready;
1913
1914 prepare_schedule_to (aTHX_ ta, next);
1915 break;
1916 }
1917 }
1918 else
1919 {
1920 /* nothing to schedule: call the idle handler */
1921 if (SvROK (sv_idle)
1922 && SvOBJECT (SvRV (sv_idle)))
1923 {
1924 if (SvRV (sv_idle) == SvRV (coro_current))
1925 {
1926 require_pv ("Carp");
1927
1928 {
1929 dSP;
1930
1931 ENTER;
1932 SAVETMPS;
1933
1934 PUSHMARK (SP);
1935 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
1936 PUTBACK;
1937 call_pv ("Carp::confess", G_VOID | G_DISCARD);
1938
1939 FREETMPS;
1940 LEAVE;
1941 }
1942 }
1943
1944 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1945 api_ready (aTHX_ SvRV (sv_idle));
1946 --coro_nready;
1947 }
1948 else
1949 {
1950 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1951 dSP;
1952
1953 ENTER;
1954 SAVETMPS;
1955
1956 PUSHMARK (SP);
1957 PUTBACK;
1958 call_sv (sv_idle, G_VOID | G_DISCARD);
1959
1960 FREETMPS;
1961 LEAVE;
1962 }
1963 }
1964 }
1965}
1966
1967ecb_inline void
1625prepare_cede (pTHX_ struct coro_transfer_args *ta) 1968prepare_cede (pTHX_ struct coro_transfer_args *ta)
1626{ 1969{
1627 api_ready (aTHX_ coro_current); 1970 api_ready (aTHX_ coro_current);
1628 prepare_schedule (aTHX_ ta); 1971 prepare_schedule (aTHX_ ta);
1629} 1972}
1630 1973
1631INLINE void 1974ecb_inline void
1632prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1975prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1633{ 1976{
1634 SV *prev = SvRV (coro_current); 1977 SV *prev = SvRV (coro_current);
1635 1978
1636 if (coro_nready) 1979 if (coro_nready)
… …
1649 1992
1650 prepare_schedule (aTHX_ &ta); 1993 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1); 1994 TRANSFER (ta, 1);
1652} 1995}
1653 1996
1997static void
1998api_schedule_to (pTHX_ SV *coro_sv)
1999{
2000 struct coro_transfer_args ta;
2001 struct coro *next = SvSTATE (coro_sv);
2002
2003 SvREFCNT_inc_NN (coro_sv);
2004 prepare_schedule_to (aTHX_ &ta, next);
2005}
2006
1654static int 2007static int
1655api_cede (pTHX) 2008api_cede (pTHX)
1656{ 2009{
1657 struct coro_transfer_args ta; 2010 struct coro_transfer_args ta;
1658 2011
1659 prepare_cede (aTHX_ &ta); 2012 prepare_cede (aTHX_ &ta);
1660 2013
1661 if (expect_true (ta.prev != ta.next)) 2014 if (ecb_expect_true (ta.prev != ta.next))
1662 { 2015 {
1663 TRANSFER (ta, 1); 2016 TRANSFER (ta, 1);
1664 return 1; 2017 return 1;
1665 } 2018 }
1666 else 2019 else
… …
1685static void 2038static void
1686api_trace (pTHX_ SV *coro_sv, int flags) 2039api_trace (pTHX_ SV *coro_sv, int flags)
1687{ 2040{
1688 struct coro *coro = SvSTATE (coro_sv); 2041 struct coro *coro = SvSTATE (coro_sv);
1689 2042
2043 if (coro->flags & CF_RUNNING)
2044 croak ("cannot enable tracing on a running coroutine, caught");
2045
1690 if (flags & CC_TRACE) 2046 if (flags & CC_TRACE)
1691 { 2047 {
1692 if (!coro->cctx) 2048 if (!coro->cctx)
1693 coro->cctx = cctx_new_run (); 2049 coro->cctx = cctx_new_run ();
1694 else if (!(coro->cctx->flags & CC_TRACE)) 2050 else if (!(coro->cctx->flags & CC_TRACE))
1695 croak ("cannot enable tracing on coroutine with custom stack,"); 2051 croak ("cannot enable tracing on coroutine with custom stack, caught");
1696 2052
1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2053 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1698 } 2054 }
1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2055 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1700 { 2056 {
… …
1703 if (coro->flags & CF_RUNNING) 2059 if (coro->flags & CF_RUNNING)
1704 PL_runops = RUNOPS_DEFAULT; 2060 PL_runops = RUNOPS_DEFAULT;
1705 else 2061 else
1706 coro->slot->runops = RUNOPS_DEFAULT; 2062 coro->slot->runops = RUNOPS_DEFAULT;
1707 } 2063 }
2064}
2065
2066static void
2067coro_push_av (pTHX_ AV *av, I32 gimme_v)
2068{
2069 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2070 {
2071 dSP;
2072
2073 if (gimme_v == G_SCALAR)
2074 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2075 else
2076 {
2077 int i;
2078 EXTEND (SP, AvFILLp (av) + 1);
2079
2080 for (i = 0; i <= AvFILLp (av); ++i)
2081 PUSHs (AvARRAY (av)[i]);
2082 }
2083
2084 PUTBACK;
2085 }
2086}
2087
2088static void
2089coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2090{
2091 if (!coro->on_destroy)
2092 coro->on_destroy = newAV ();
2093
2094 av_push (coro->on_destroy, cb);
2095}
2096
2097static void
2098slf_destroy_join (pTHX_ struct CoroSLF *frame)
2099{
2100 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2101}
2102
2103static int
2104slf_check_join (pTHX_ struct CoroSLF *frame)
2105{
2106 struct coro *coro = (struct coro *)frame->data;
2107
2108 if (!coro->status)
2109 return 1;
2110
2111 frame->destroy = 0;
2112
2113 coro_push_av (aTHX_ coro->status, GIMME_V);
2114
2115 SvREFCNT_dec ((SV *)coro->hv);
2116
2117 return 0;
2118}
2119
2120static void
2121slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2122{
2123 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2124
2125 if (items > 1)
2126 croak ("join called with too many arguments");
2127
2128 if (coro->status)
2129 frame->prepare = prepare_nop;
2130 else
2131 {
2132 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2133 frame->prepare = prepare_schedule;
2134 }
2135
2136 frame->check = slf_check_join;
2137 frame->destroy = slf_destroy_join;
2138 frame->data = (void *)coro;
2139 SvREFCNT_inc (coro->hv);
2140}
2141
2142static void
2143coro_call_on_destroy (pTHX_ struct coro *coro)
2144{
2145 AV *od = coro->on_destroy;
2146
2147 if (!od)
2148 return;
2149
2150 coro->on_destroy = 0;
2151 sv_2mortal ((SV *)od);
2152
2153 while (AvFILLp (od) >= 0)
2154 {
2155 SV *cb = sv_2mortal (av_pop (od));
2156
2157 /* coro hv's (and only hv's at the moment) are supported as well */
2158 if (SvSTATEhv_p (aTHX_ cb))
2159 api_ready (aTHX_ cb);
2160 else
2161 {
2162 dSP; /* don't disturb outer sp */
2163 PUSHMARK (SP);
2164
2165 if (coro->status)
2166 {
2167 PUTBACK;
2168 coro_push_av (aTHX_ coro->status, G_ARRAY);
2169 SPAGAIN;
2170 }
2171
2172 PUTBACK;
2173 call_sv (cb, G_VOID | G_DISCARD);
2174 }
2175 }
2176}
2177
2178static void
2179coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2180{
2181 AV *av;
2182
2183 if (coro->status)
2184 {
2185 av = coro->status;
2186 av_clear (av);
2187 }
2188 else
2189 av = coro->status = newAV ();
2190
2191 /* items are actually not so common, so optimise for this case */
2192 if (items)
2193 {
2194 int i;
2195
2196 av_extend (av, items - 1);
2197
2198 for (i = 0; i < items; ++i)
2199 av_push (av, SvREFCNT_inc_NN (arg [i]));
2200 }
2201}
2202
2203static void
2204slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2205{
2206 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2207 api_ready (aTHX_ sv_manager);
2208
2209 frame->prepare = prepare_schedule;
2210 frame->check = slf_check_repeat;
2211
2212 /* as a minor optimisation, we could unwind all stacks here */
2213 /* but that puts extra pressure on pp_slf, and is not worth much */
2214 /*coro_unwind_stacks (aTHX);*/
2215}
2216
2217static void
2218slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2219{
2220 HV *coro_hv = (HV *)SvRV (coro_current);
2221
2222 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2223 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2224}
2225
2226static void
2227slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2228{
2229 HV *coro_hv;
2230 struct coro *coro;
2231
2232 if (items <= 0)
2233 croak ("Coro::cancel called without coro object,");
2234
2235 coro = SvSTATE (arg [0]);
2236 coro_hv = coro->hv;
2237
2238 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2239
2240 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2241 {
2242 /* coro currently busy cancelling something, so just notify it */
2243 coro->slf_frame.data = (void *)coro;
2244
2245 frame->prepare = prepare_nop;
2246 frame->check = slf_check_nop;
2247 }
2248 else if (coro_hv == (HV *)SvRV (coro_current))
2249 {
2250 /* cancelling the current coro is allowed, and equals terminate */
2251 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2252 }
2253 else
2254 {
2255 struct coro *self = SvSTATE_current;
2256
2257 if (!self)
2258 croak ("Coro::cancel called outside of thread content,");
2259
2260 /* otherwise we cancel directly, purely for speed reasons
2261 * unfortunately, this requires some magic trickery, as
2262 * somebody else could cancel us, so we have to fight the cancellation.
2263 * this is ugly, and hopefully fully worth the extra speed.
2264 * besides, I can't get the slow-but-safe version working...
2265 */
2266 slf_frame.data = 0;
2267 self->flags |= CF_NOCANCEL;
2268 coro_state_destroy (aTHX_ coro);
2269 self->flags &= ~CF_NOCANCEL;
2270
2271 if (slf_frame.data)
2272 {
2273 /* while we were busy we have been cancelled, so terminate */
2274 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2275 }
2276 else
2277 {
2278 frame->prepare = prepare_nop;
2279 frame->check = slf_check_nop;
2280 }
2281 }
2282}
2283
2284static int
2285slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2286{
2287 frame->prepare = 0;
2288 coro_unwind_stacks (aTHX);
2289
2290 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2291
2292 return 1;
2293}
2294
2295static int
2296safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2297{
2298 if (coro->cctx)
2299 croak ("coro inside C callback, unable to cancel at this time, caught");
2300
2301 if (coro->flags & CF_NEW)
2302 {
2303 coro_set_status (aTHX_ coro, arg, items);
2304 coro_state_destroy (aTHX_ coro);
2305 }
2306 else
2307 {
2308 if (!coro->slf_frame.prepare)
2309 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2310
2311 slf_destroy (aTHX_ coro);
2312
2313 coro_set_status (aTHX_ coro, arg, items);
2314 coro->slf_frame.prepare = prepare_nop;
2315 coro->slf_frame.check = slf_check_safe_cancel;
2316
2317 api_ready (aTHX_ (SV *)coro->hv);
2318 }
2319
2320 return 1;
2321}
2322
2323/*****************************************************************************/
2324/* async pool handler */
2325
2326static int
2327slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2328{
2329 HV *hv = (HV *)SvRV (coro_current);
2330 struct coro *coro = (struct coro *)frame->data;
2331
2332 if (!coro->invoke_cb)
2333 return 1; /* loop till we have invoke */
2334 else
2335 {
2336 hv_store (hv, "desc", sizeof ("desc") - 1,
2337 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2338
2339 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2340
2341 {
2342 dSP;
2343 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2344 PUTBACK;
2345 }
2346
2347 SvREFCNT_dec (GvAV (PL_defgv));
2348 GvAV (PL_defgv) = coro->invoke_av;
2349 coro->invoke_av = 0;
2350
2351 return 0;
2352 }
2353}
2354
2355static void
2356slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2357{
2358 HV *hv = (HV *)SvRV (coro_current);
2359 struct coro *coro = SvSTATE_hv ((SV *)hv);
2360
2361 if (ecb_expect_true (coro->saved_deffh))
2362 {
2363 /* subsequent iteration */
2364 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2365 coro->saved_deffh = 0;
2366
2367 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2368 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2369 {
2370 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2371 return;
2372 }
2373 else
2374 {
2375 av_clear (GvAV (PL_defgv));
2376 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2377
2378 coro->prio = 0;
2379
2380 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2381 api_trace (aTHX_ coro_current, 0);
2382
2383 frame->prepare = prepare_schedule;
2384 av_push (av_async_pool, SvREFCNT_inc (hv));
2385 }
2386 }
2387 else
2388 {
2389 /* first iteration, simply fall through */
2390 frame->prepare = prepare_nop;
2391 }
2392
2393 frame->check = slf_check_pool_handler;
2394 frame->data = (void *)coro;
2395}
2396
2397/*****************************************************************************/
2398/* rouse callback */
2399
2400#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2401
2402static void
2403coro_rouse_callback (pTHX_ CV *cv)
2404{
2405 dXSARGS;
2406 SV *data = (SV *)S_GENSUB_ARG;
2407
2408 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2409 {
2410 /* first call, set args */
2411 SV *coro = SvRV (data);
2412 AV *av = newAV ();
2413
2414 SvRV_set (data, (SV *)av);
2415
2416 /* better take a full copy of the arguments */
2417 while (items--)
2418 av_store (av, items, newSVsv (ST (items)));
2419
2420 api_ready (aTHX_ coro);
2421 SvREFCNT_dec (coro);
2422 }
2423
2424 XSRETURN_EMPTY;
2425}
2426
2427static int
2428slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2429{
2430 SV *data = (SV *)frame->data;
2431
2432 if (CORO_THROW)
2433 return 0;
2434
2435 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2436 return 1;
2437
2438 /* now push all results on the stack */
2439 {
2440 dSP;
2441 AV *av = (AV *)SvRV (data);
2442 int i;
2443
2444 EXTEND (SP, AvFILLp (av) + 1);
2445 for (i = 0; i <= AvFILLp (av); ++i)
2446 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2447
2448 /* we have stolen the elements, so set length to zero and free */
2449 AvFILLp (av) = -1;
2450 av_undef (av);
2451
2452 PUTBACK;
2453 }
2454
2455 return 0;
2456}
2457
2458static void
2459slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2460{
2461 SV *cb;
2462
2463 if (items)
2464 cb = arg [0];
2465 else
2466 {
2467 struct coro *coro = SvSTATE_current;
2468
2469 if (!coro->rouse_cb)
2470 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2471
2472 cb = sv_2mortal (coro->rouse_cb);
2473 coro->rouse_cb = 0;
2474 }
2475
2476 if (!SvROK (cb)
2477 || SvTYPE (SvRV (cb)) != SVt_PVCV
2478 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2479 croak ("Coro::rouse_wait called with illegal callback argument,");
2480
2481 {
2482 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2483 SV *data = (SV *)S_GENSUB_ARG;
2484
2485 frame->data = (void *)data;
2486 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2487 frame->check = slf_check_rouse_wait;
2488 }
2489}
2490
2491static SV *
2492coro_new_rouse_cb (pTHX)
2493{
2494 HV *hv = (HV *)SvRV (coro_current);
2495 struct coro *coro = SvSTATE_hv (hv);
2496 SV *data = newRV_inc ((SV *)hv);
2497 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2498
2499 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2500 SvREFCNT_dec (data); /* magicext increases the refcount */
2501
2502 SvREFCNT_dec (coro->rouse_cb);
2503 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2504
2505 return cb;
1708} 2506}
1709 2507
1710/*****************************************************************************/ 2508/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */ 2509/* schedule-like-function opcode (SLF) */
1712 2510
… …
1762 frame->prepare = prepare_schedule; 2560 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop; 2561 frame->check = slf_check_nop;
1764} 2562}
1765 2563
1766static void 2564static void
2565slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2566{
2567 struct coro *next = (struct coro *)slf_frame.data;
2568
2569 SvREFCNT_inc_NN (next->hv);
2570 prepare_schedule_to (aTHX_ ta, next);
2571}
2572
2573static void
2574slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2575{
2576 if (!items)
2577 croak ("Coro::schedule_to expects a coroutine argument, caught");
2578
2579 frame->data = (void *)SvSTATE (arg [0]);
2580 frame->prepare = slf_prepare_schedule_to;
2581 frame->check = slf_check_nop;
2582}
2583
2584static void
2585slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2586{
2587 api_ready (aTHX_ SvRV (coro_current));
2588
2589 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2590}
2591
2592static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2593slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{ 2594{
1769 frame->prepare = prepare_cede; 2595 frame->prepare = prepare_cede;
1770 frame->check = slf_check_nop; 2596 frame->check = slf_check_nop;
1771} 2597}
… …
1773static void 2599static void
1774slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2600slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1775{ 2601{
1776 frame->prepare = prepare_cede_notself; 2602 frame->prepare = prepare_cede_notself;
1777 frame->check = slf_check_nop; 2603 frame->check = slf_check_nop;
2604}
2605
2606/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2607static void
2608slf_destroy (pTHX_ struct coro *coro)
2609{
2610 struct CoroSLF frame = coro->slf_frame;
2611
2612 /*
2613 * The on_destroy below most likely is from an SLF call.
2614 * Since by definition the SLF call will not finish when we destroy
2615 * the coro, we will have to force-finish it here, otherwise
2616 * cleanup functions cannot call SLF functions.
2617 */
2618 coro->slf_frame.prepare = 0;
2619
2620 /* this callback is reserved for slf functions needing to do cleanup */
2621 if (frame.destroy && frame.prepare && !PL_dirty)
2622 frame.destroy (aTHX_ &frame);
1778} 2623}
1779 2624
1780/* 2625/*
1781 * these not obviously related functions are all rolled into one 2626 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same 2627 * function to increase chances that they all will call transfer with the same
… …
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2634 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790 2635
1791 /* set up the slf frame, unless it has already been set-up */ 2636 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */ 2637 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */ 2638 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare)) 2639 if (ecb_expect_true (!slf_frame.prepare))
1795 { 2640 {
1796 /* first iteration */ 2641 /* first iteration */
1797 dSP; 2642 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1; 2643 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */ 2644 int items = SP - arg; /* args without function object */
… …
1840 while (slf_frame.check (aTHX_ &slf_frame)); 2685 while (slf_frame.check (aTHX_ &slf_frame));
1841 2686
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2687 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843 2688
1844 /* exception handling */ 2689 /* exception handling */
1845 if (expect_false (CORO_THROW)) 2690 if (ecb_expect_false (CORO_THROW))
1846 { 2691 {
1847 SV *exception = sv_2mortal (CORO_THROW); 2692 SV *exception = sv_2mortal (CORO_THROW);
1848 2693
1849 CORO_THROW = 0; 2694 CORO_THROW = 0;
1850 sv_setsv (ERRSV, exception); 2695 sv_setsv (ERRSV, exception);
1851 croak (0); 2696 croak (0);
1852 } 2697 }
1853 2698
1854 /* return value handling - mostly like entersub */ 2699 /* return value handling - mostly like entersub */
1855 /* make sure we put something on the stack in scalar context */ 2700 /* make sure we put something on the stack in scalar context */
1856 if (GIMME_V == G_SCALAR) 2701 if (GIMME_V == G_SCALAR
2702 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
1857 { 2703 {
1858 dSP; 2704 dSP;
1859 SV **bot = PL_stack_base + checkmark; 2705 SV **bot = PL_stack_base + checkmark;
1860 2706
1861 if (sp == bot) /* too few, push undef */ 2707 if (sp == bot) /* too few, push undef */
1862 bot [1] = &PL_sv_undef; 2708 bot [1] = &PL_sv_undef;
1863 else if (sp != bot + 1) /* too many, take last one */ 2709 else /* too many, take last one */
1864 bot [1] = *sp; 2710 bot [1] = *sp;
1865 2711
1866 SP = bot + 1; 2712 SP = bot + 1;
1867 2713
1868 PUTBACK; 2714 PUTBACK;
… …
1901 if (PL_op->op_flags & OPf_STACKED) 2747 if (PL_op->op_flags & OPf_STACKED)
1902 { 2748 {
1903 if (items > slf_arga) 2749 if (items > slf_arga)
1904 { 2750 {
1905 slf_arga = items; 2751 slf_arga = items;
1906 free (slf_argv); 2752 Safefree (slf_argv);
1907 slf_argv = malloc (slf_arga * sizeof (SV *)); 2753 New (0, slf_argv, slf_arga, SV *);
1908 } 2754 }
1909 2755
1910 slf_argc = items; 2756 slf_argc = items;
1911 2757
1912 for (i = 0; i < items; ++i) 2758 for (i = 0; i < items; ++i)
… …
1914 } 2760 }
1915 else 2761 else
1916 slf_argc = 0; 2762 slf_argc = 0;
1917 2763
1918 PL_op->op_ppaddr = pp_slf; 2764 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2765 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1920 2766
1921 PL_op = (OP *)&slf_restore; 2767 PL_op = (OP *)&slf_restore;
2768}
2769
2770/*****************************************************************************/
2771/* dynamic wind */
2772
2773static void
2774on_enterleave_call (pTHX_ SV *cb)
2775{
2776 dSP;
2777
2778 PUSHSTACK;
2779
2780 PUSHMARK (SP);
2781 PUTBACK;
2782 call_sv (cb, G_VOID | G_DISCARD);
2783 SPAGAIN;
2784
2785 POPSTACK;
2786}
2787
2788static SV *
2789coro_avp_pop_and_free (pTHX_ AV **avp)
2790{
2791 AV *av = *avp;
2792 SV *res = av_pop (av);
2793
2794 if (AvFILLp (av) < 0)
2795 {
2796 *avp = 0;
2797 SvREFCNT_dec (av);
2798 }
2799
2800 return res;
2801}
2802
2803static void
2804coro_pop_on_enter (pTHX_ void *coro)
2805{
2806 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2807 SvREFCNT_dec (cb);
2808}
2809
2810static void
2811coro_pop_on_leave (pTHX_ void *coro)
2812{
2813 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2814 on_enterleave_call (aTHX_ sv_2mortal (cb));
1922} 2815}
1923 2816
1924/*****************************************************************************/ 2817/*****************************************************************************/
1925/* PerlIO::cede */ 2818/* PerlIO::cede */
1926 2819
… …
1928{ 2821{
1929 PerlIOBuf base; 2822 PerlIOBuf base;
1930 NV next, every; 2823 NV next, every;
1931} PerlIOCede; 2824} PerlIOCede;
1932 2825
1933static IV 2826static IV ecb_cold
1934PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2827PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1935{ 2828{
1936 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2829 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1937 2830
1938 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2831 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1939 self->next = nvtime () + self->every; 2832 self->next = nvtime () + self->every;
1940 2833
1941 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2834 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1942} 2835}
1943 2836
1944static SV * 2837static SV * ecb_cold
1945PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2838PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1946{ 2839{
1947 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2840 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1948 2841
1949 return newSVnv (self->every); 2842 return newSVnv (self->every);
… …
1995 PerlIOBuf_get_cnt, 2888 PerlIOBuf_get_cnt,
1996 PerlIOBuf_set_ptrcnt, 2889 PerlIOBuf_set_ptrcnt,
1997}; 2890};
1998 2891
1999/*****************************************************************************/ 2892/*****************************************************************************/
2000/* Coro::Semaphore */ 2893/* Coro::Semaphore & Coro::Signal */
2001 2894
2002static SV * 2895static SV *
2003coro_semaphore_new (int count) 2896coro_waitarray_new (pTHX_ int count)
2004{ 2897{
2005 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2898 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2006 AV *av = newAV (); 2899 AV *av = newAV ();
2007 SV **ary; 2900 SV **ary;
2008 2901
2009 /* unfortunately, building manually saves memory */ 2902 /* unfortunately, building manually saves memory */
2010 Newx (ary, 2, SV *); 2903 Newx (ary, 2, SV *);
2011 AvALLOC (av) = ary; 2904 AvALLOC (av) = ary;
2905#if PERL_VERSION_ATLEAST (5,10,0)
2012 AvARRAY (av) = ary; 2906 AvARRAY (av) = ary;
2907#else
2908 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2909 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2910 SvPVX ((SV *)av) = (char *)ary;
2911#endif
2013 AvMAX (av) = 1; 2912 AvMAX (av) = 1;
2014 AvFILLp (av) = 0; 2913 AvFILLp (av) = 0;
2015 ary [0] = newSViv (count); 2914 ary [0] = newSViv (count);
2016 2915
2017 return newRV_noinc ((SV *)av); 2916 return newRV_noinc ((SV *)av);
2018} 2917}
2918
2919/* semaphore */
2019 2920
2020static void 2921static void
2021coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2922coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2022{ 2923{
2023 SV *count_sv = AvARRAY (av)[0]; 2924 SV *count_sv = AvARRAY (av)[0];
… …
2035 AvARRAY (av)[0] = AvARRAY (av)[1]; 2936 AvARRAY (av)[0] = AvARRAY (av)[1];
2036 AvARRAY (av)[1] = count_sv; 2937 AvARRAY (av)[1] = count_sv;
2037 cb = av_shift (av); 2938 cb = av_shift (av);
2038 2939
2039 if (SvOBJECT (cb)) 2940 if (SvOBJECT (cb))
2941 {
2040 api_ready (aTHX_ cb); 2942 api_ready (aTHX_ cb);
2041 else 2943 --count;
2042 croak ("callbacks not yet supported"); 2944 }
2945 else if (SvTYPE (cb) == SVt_PVCV)
2946 {
2947 dSP;
2948 PUSHMARK (SP);
2949 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2950 PUTBACK;
2951 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2952 }
2043 2953
2044 SvREFCNT_dec (cb); 2954 SvREFCNT_dec (cb);
2045
2046 --count;
2047 } 2955 }
2048} 2956}
2049 2957
2050static void 2958static void
2051coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2959coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2052{ 2960{
2053 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2961 /* call $sem->adjust (0) to possibly wake up some other waiters */
2054 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2962 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2055} 2963}
2056 2964
2057static int 2965static int
2058slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2966slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2059{ 2967{
2060 AV *av = (AV *)frame->data; 2968 AV *av = (AV *)frame->data;
2061 SV *count_sv = AvARRAY (av)[0]; 2969 SV *count_sv = AvARRAY (av)[0];
2970 SV *coro_hv = SvRV (coro_current);
2971
2972 frame->destroy = 0;
2062 2973
2063 /* if we are about to throw, don't actually acquire the lock, just throw */ 2974 /* if we are about to throw, don't actually acquire the lock, just throw */
2064 if (CORO_THROW) 2975 if (ecb_expect_false (CORO_THROW))
2976 {
2977 /* we still might be responsible for the semaphore, so wake up others */
2978 coro_semaphore_adjust (aTHX_ av, 0);
2979
2065 return 0; 2980 return 0;
2981 }
2066 else if (SvIVX (count_sv) > 0) 2982 else if (SvIVX (count_sv) > 0)
2067 { 2983 {
2068 SvSTATE_current->on_destroy = 0;
2069
2070 if (acquire) 2984 if (acquire)
2071 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2985 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2072 else 2986 else
2073 coro_semaphore_adjust (aTHX_ av, 0); 2987 coro_semaphore_adjust (aTHX_ av, 0);
2074 2988
… …
2078 { 2992 {
2079 int i; 2993 int i;
2080 /* if we were woken up but can't down, we look through the whole */ 2994 /* if we were woken up but can't down, we look through the whole */
2081 /* waiters list and only add us if we aren't in there already */ 2995 /* waiters list and only add us if we aren't in there already */
2082 /* this avoids some degenerate memory usage cases */ 2996 /* this avoids some degenerate memory usage cases */
2083 2997 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2084 for (i = 1; i <= AvFILLp (av); ++i)
2085 if (AvARRAY (av)[i] == SvRV (coro_current)) 2998 if (AvARRAY (av)[i] == coro_hv)
2086 return 1; 2999 return 1;
2087 3000
2088 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3001 av_push (av, SvREFCNT_inc (coro_hv));
2089 return 1; 3002 return 1;
2090 } 3003 }
2091} 3004}
2092 3005
2093static int 3006static int
… …
2116 { 3029 {
2117 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3030 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2118 3031
2119 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3032 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2120 frame->prepare = prepare_schedule; 3033 frame->prepare = prepare_schedule;
2121
2122 /* to avoid race conditions when a woken-up coro gets terminated */ 3034 /* to avoid race conditions when a woken-up coro gets terminated */
2123 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3035 /* we arrange for a temporary on_destroy that calls adjust (0) */
2124 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3036 frame->destroy = coro_semaphore_destroy;
2125 } 3037 }
2126} 3038}
2127 3039
2128static void 3040static void
2129slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3041slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2133} 3045}
2134 3046
2135static void 3047static void
2136slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3048slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2137{ 3049{
3050 if (items >= 2)
3051 {
3052 /* callback form */
3053 AV *av = (AV *)SvRV (arg [0]);
3054 SV *cb_cv = s_get_cv_croak (arg [1]);
3055
3056 av_push (av, SvREFCNT_inc_NN (cb_cv));
3057
3058 if (SvIVX (AvARRAY (av)[0]) > 0)
3059 coro_semaphore_adjust (aTHX_ av, 0);
3060
3061 frame->prepare = prepare_nop;
3062 frame->check = slf_check_nop;
3063 }
3064 else
3065 {
2138 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); 3066 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2139 frame->check = slf_check_semaphore_wait; 3067 frame->check = slf_check_semaphore_wait;
3068 }
2140} 3069}
2141 3070
2142/*****************************************************************************/ 3071/* signal */
2143/* gensub: simple closure generation utility */
2144 3072
2145#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3073static void
2146 3074coro_signal_wake (pTHX_ AV *av, int count)
2147/* create a closure from XS, returns a code reference */
2148/* the arg can be accessed via GENSUB_ARG from the callback */
2149/* the callback must use dXSARGS/XSRETURN */
2150static SV *
2151gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2152{ 3075{
2153 CV *cv = (CV *)newSV (0); 3076 SvIVX (AvARRAY (av)[0]) = 0;
2154 3077
2155 sv_upgrade ((SV *)cv, SVt_PVCV); 3078 /* now signal count waiters */
3079 while (count > 0 && AvFILLp (av) > 0)
3080 {
3081 SV *cb;
2156 3082
2157 CvANON_on (cv); 3083 /* swap first two elements so we can shift a waiter */
2158 CvISXSUB_on (cv); 3084 cb = AvARRAY (av)[0];
2159 CvXSUB (cv) = xsub; 3085 AvARRAY (av)[0] = AvARRAY (av)[1];
2160 GENSUB_ARG = arg; 3086 AvARRAY (av)[1] = cb;
2161 3087
2162 return newRV_noinc ((SV *)cv); 3088 cb = av_shift (av);
3089
3090 if (SvTYPE (cb) == SVt_PVCV)
3091 {
3092 dSP;
3093 PUSHMARK (SP);
3094 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3095 PUTBACK;
3096 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3097 }
3098 else
3099 {
3100 api_ready (aTHX_ cb);
3101 sv_setiv (cb, 0); /* signal waiter */
3102 }
3103
3104 SvREFCNT_dec (cb);
3105
3106 --count;
3107 }
3108}
3109
3110static int
3111slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3112{
3113 /* if we are about to throw, also stop waiting */
3114 return SvROK ((SV *)frame->data) && !CORO_THROW;
3115}
3116
3117static void
3118slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3119{
3120 AV *av = (AV *)SvRV (arg [0]);
3121
3122 if (items >= 2)
3123 {
3124 SV *cb_cv = s_get_cv_croak (arg [1]);
3125 av_push (av, SvREFCNT_inc_NN (cb_cv));
3126
3127 if (SvIVX (AvARRAY (av)[0]))
3128 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3129
3130 frame->prepare = prepare_nop;
3131 frame->check = slf_check_nop;
3132 }
3133 else if (SvIVX (AvARRAY (av)[0]))
3134 {
3135 SvIVX (AvARRAY (av)[0]) = 0;
3136 frame->prepare = prepare_nop;
3137 frame->check = slf_check_nop;
3138 }
3139 else
3140 {
3141 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3142
3143 av_push (av, waiter);
3144
3145 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3146 frame->prepare = prepare_schedule;
3147 frame->check = slf_check_signal_wait;
3148 }
2163} 3149}
2164 3150
2165/*****************************************************************************/ 3151/*****************************************************************************/
2166/* Coro::AIO */ 3152/* Coro::AIO */
2167 3153
… …
2178 3164
2179static void 3165static void
2180coro_aio_callback (pTHX_ CV *cv) 3166coro_aio_callback (pTHX_ CV *cv)
2181{ 3167{
2182 dXSARGS; 3168 dXSARGS;
2183 AV *state = (AV *)GENSUB_ARG; 3169 AV *state = (AV *)S_GENSUB_ARG;
2184 SV *coro = av_pop (state); 3170 SV *coro = av_pop (state);
2185 SV *data_sv = newSV (sizeof (struct io_state)); 3171 SV *data_sv = newSV (sizeof (struct io_state));
2186 3172
2187 av_extend (state, items); 3173 av_extend (state, items - 1);
2188 3174
2189 sv_upgrade (data_sv, SVt_PV); 3175 sv_upgrade (data_sv, SVt_PV);
2190 SvCUR_set (data_sv, sizeof (struct io_state)); 3176 SvCUR_set (data_sv, sizeof (struct io_state));
2191 SvPOK_only (data_sv); 3177 SvPOK_only (data_sv);
2192 3178
… …
2224 /* it quickly returns */ 3210 /* it quickly returns */
2225 if (CORO_THROW) 3211 if (CORO_THROW)
2226 return 0; 3212 return 0;
2227 3213
2228 /* one element that is an RV? repeat! */ 3214 /* one element that is an RV? repeat! */
2229 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3215 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2230 return 1; 3216 return 1;
2231 3217
2232 /* restore status */ 3218 /* restore status */
2233 { 3219 {
2234 SV *data_sv = av_pop (state); 3220 SV *data_sv = av_pop (state);
… …
2273 dSP; 3259 dSP;
2274 3260
2275 static SV *prio_cv; 3261 static SV *prio_cv;
2276 static SV *prio_sv; 3262 static SV *prio_sv;
2277 3263
2278 if (expect_false (!prio_cv)) 3264 if (ecb_expect_false (!prio_cv))
2279 { 3265 {
2280 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3266 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2281 prio_sv = newSViv (0); 3267 prio_sv = newSViv (0);
2282 } 3268 }
2283 3269
… …
2302 3288
2303 for (i = 0; i < items; ++i) 3289 for (i = 0; i < items; ++i)
2304 PUSHs (arg [i]); 3290 PUSHs (arg [i]);
2305 3291
2306 /* now push the callback closure */ 3292 /* now push the callback closure */
2307 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3293 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2308 3294
2309 /* now call the AIO function - we assume our request is uncancelable */ 3295 /* now call the AIO function - we assume our request is uncancelable */
2310 PUTBACK; 3296 PUTBACK;
2311 call_sv ((SV *)req, G_VOID | G_DISCARD); 3297 call_sv ((SV *)req, G_VOID | G_DISCARD);
2312 } 3298 }
2313 3299
2314 /* now that the requets is going, we loop toll we have a result */ 3300 /* now that the request is going, we loop till we have a result */
2315 frame->data = (void *)state; 3301 frame->data = (void *)state;
2316 frame->prepare = prepare_schedule; 3302 frame->prepare = prepare_schedule;
2317 frame->check = slf_check_aio_req; 3303 frame->check = slf_check_aio_req;
2318} 3304}
2319 3305
… …
2327 XSRETURN_EMPTY; 3313 XSRETURN_EMPTY;
2328} 3314}
2329 3315
2330/*****************************************************************************/ 3316/*****************************************************************************/
2331 3317
3318#if CORO_CLONE
3319# include "clone.c"
3320#endif
3321
3322/*****************************************************************************/
3323
3324static SV *
3325coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3326{
3327 SV *coro_sv;
3328 struct coro *coro;
3329 MAGIC *mg;
3330 HV *hv;
3331 SV *cb;
3332 int i;
3333
3334 if (argc > 0)
3335 {
3336 cb = s_get_cv_croak (argv [0]);
3337
3338 if (!is_coro)
3339 {
3340 if (CvISXSUB (cb))
3341 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3342
3343 if (!CvROOT (cb))
3344 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3345 }
3346 }
3347
3348 Newz (0, coro, 1, struct coro);
3349 coro->args = newAV ();
3350 coro->flags = CF_NEW;
3351
3352 if (coro_first) coro_first->prev = coro;
3353 coro->next = coro_first;
3354 coro_first = coro;
3355
3356 coro->hv = hv = newHV ();
3357 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3358 mg->mg_flags |= MGf_DUP;
3359 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3360
3361 if (argc > 0)
3362 {
3363 av_extend (coro->args, argc + is_coro - 1);
3364
3365 if (is_coro)
3366 {
3367 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3368 cb = (SV *)cv_coro_run;
3369 }
3370
3371 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3372
3373 for (i = 1; i < argc; i++)
3374 av_push (coro->args, newSVsv (argv [i]));
3375 }
3376
3377 return coro_sv;
3378}
3379
3380#ifndef __cplusplus
3381ecb_cold XS(boot_Coro__State);
3382#endif
3383
3384#if CORO_JIT
3385
3386static void ecb_noinline ecb_cold
3387pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3388{
3389 dSP;
3390 AV *av = newAV ();
3391
3392 av_store (av, 3, newSVuv (d));
3393 av_store (av, 2, newSVuv (c));
3394 av_store (av, 1, newSVuv (b));
3395 av_store (av, 0, newSVuv (a));
3396
3397 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3398
3399 PUTBACK;
3400}
3401
3402static void ecb_noinline ecb_cold
3403jit_init (pTHX)
3404{
3405 dSP;
3406 SV *load, *save;
3407 char *map_base;
3408 char *load_ptr, *save_ptr;
3409 STRLEN load_len, save_len, map_len;
3410 int count;
3411
3412 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3413
3414 PUSHMARK (SP);
3415 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3416 #include "state.h"
3417 count = call_pv ("Coro::State::_jit", G_ARRAY);
3418 SPAGAIN;
3419
3420 save = POPs; save_ptr = SvPVbyte (save, save_len);
3421 load = POPs; load_ptr = SvPVbyte (load, load_len);
3422
3423 map_len = load_len + save_len + 16;
3424
3425 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3426
3427 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3428
3429 load_perl_slots = (load_save_perl_slots_type)map_base;
3430 memcpy (map_base, load_ptr, load_len);
3431
3432 map_base += (load_len + 15) & ~15;
3433
3434 save_perl_slots = (load_save_perl_slots_type)map_base;
3435 memcpy (map_base, save_ptr, save_len);
3436
3437 /* we are good citizens and try to make the page read-only, so the evil evil */
3438 /* hackers might have it a bit more difficult */
3439 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3440
3441 PUTBACK;
3442 eval_pv ("undef &Coro::State::_jit", 1);
3443}
3444
3445#endif
3446
2332MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3447MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2333 3448
2334PROTOTYPES: DISABLE 3449PROTOTYPES: DISABLE
2335 3450
2336BOOT: 3451BOOT:
2337{ 3452{
3453#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3454#include "state.h"
2338#ifdef USE_ITHREADS 3455#ifdef USE_ITHREADS
2339# if CORO_PTHREAD 3456# if CORO_PTHREAD
2340 coro_thx = PERL_GET_CONTEXT; 3457 coro_thx = PERL_GET_CONTEXT;
2341# endif 3458# endif
2342#endif 3459#endif
2343 BOOT_PAGESIZE; 3460 /* perl defines these to check for existance first, but why it doesn't */
3461 /* just create them one at init time is not clear to me, except for */
3462 /* programs trying to delete them, but... */
3463 /* anyway, we declare this as invalid and make sure they are initialised here */
3464 DEFSV;
3465 ERRSV;
3466
3467 cctx_current = cctx_new_empty ();
2344 3468
2345 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3469 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2346 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3470 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2347 3471
2348 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3472 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2368 3492
2369 { 3493 {
2370 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3494 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2371 3495
2372 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3496 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2373 hv_store_ent (PL_custom_op_names, slf, 3497 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2374 newSVpv ("coro_slf", 0), 0);
2375 3498
2376 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3499 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2377 hv_store_ent (PL_custom_op_descs, slf, 3500 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2378 newSVpv ("coro schedule like function", 0), 0);
2379 } 3501 }
2380 3502
2381 coroapi.ver = CORO_API_VERSION; 3503 coroapi.ver = CORO_API_VERSION;
2382 coroapi.rev = CORO_API_REVISION; 3504 coroapi.rev = CORO_API_REVISION;
2383 3505
… …
2388 coroapi.prepare_nop = prepare_nop; 3510 coroapi.prepare_nop = prepare_nop;
2389 coroapi.prepare_schedule = prepare_schedule; 3511 coroapi.prepare_schedule = prepare_schedule;
2390 coroapi.prepare_cede = prepare_cede; 3512 coroapi.prepare_cede = prepare_cede;
2391 coroapi.prepare_cede_notself = prepare_cede_notself; 3513 coroapi.prepare_cede_notself = prepare_cede_notself;
2392 3514
2393 { 3515 time_init (aTHX);
2394 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2395 3516
2396 if (!svp) croak ("Time::HiRes is required");
2397 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2398
2399 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2400 }
2401
2402 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3517 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3518#if CORO_JIT
3519 PUTBACK;
3520 jit_init (aTHX);
3521 SPAGAIN;
3522#endif
2403} 3523}
2404 3524
2405SV * 3525SV *
2406new (char *klass, ...) 3526new (SV *klass, ...)
3527 ALIAS:
3528 Coro::new = 1
2407 CODE: 3529 CODE:
2408{ 3530 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2409 struct coro *coro; 3531 OUTPUT:
2410 MAGIC *mg;
2411 HV *hv;
2412 int i;
2413
2414 Newz (0, coro, 1, struct coro);
2415 coro->args = newAV ();
2416 coro->flags = CF_NEW;
2417
2418 if (coro_first) coro_first->prev = coro;
2419 coro->next = coro_first;
2420 coro_first = coro;
2421
2422 coro->hv = hv = newHV ();
2423 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2424 mg->mg_flags |= MGf_DUP;
2425 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2426
2427 av_extend (coro->args, items - 1);
2428 for (i = 1; i < items; i++)
2429 av_push (coro->args, newSVsv (ST (i)));
2430}
2431 OUTPUT:
2432 RETVAL 3532 RETVAL
2433 3533
2434void 3534void
2435transfer (...) 3535transfer (...)
2436 PROTOTYPE: $$ 3536 PROTOTYPE: $$
2437 CODE: 3537 CODE:
2438 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3538 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2439 3539
2440bool 3540SV *
2441_destroy (SV *coro_sv) 3541clone (Coro::State coro)
2442 CODE: 3542 CODE:
2443 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3543{
3544#if CORO_CLONE
3545 struct coro *ncoro = coro_clone (aTHX_ coro);
3546 MAGIC *mg;
3547 /* TODO: too much duplication */
3548 ncoro->hv = newHV ();
3549 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3550 mg->mg_flags |= MGf_DUP;
3551 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3552#else
3553 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3554#endif
3555}
2444 OUTPUT: 3556 OUTPUT:
2445 RETVAL 3557 RETVAL
2446
2447void
2448_exit (int code)
2449 PROTOTYPE: $
2450 CODE:
2451 _exit (code);
2452 3558
2453int 3559int
2454cctx_stacksize (int new_stacksize = 0) 3560cctx_stacksize (int new_stacksize = 0)
2455 PROTOTYPE: ;$ 3561 PROTOTYPE: ;$
2456 CODE: 3562 CODE:
… …
2492void 3598void
2493list () 3599list ()
2494 PROTOTYPE: 3600 PROTOTYPE:
2495 PPCODE: 3601 PPCODE:
2496{ 3602{
2497 struct coro *coro; 3603 struct coro *coro;
2498 for (coro = coro_first; coro; coro = coro->next) 3604 for (coro = coro_first; coro; coro = coro->next)
2499 if (coro->hv) 3605 if (coro->hv)
2500 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3606 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2501} 3607}
2502 3608
… …
2506 eval = 1 3612 eval = 1
2507 CODE: 3613 CODE:
2508{ 3614{
2509 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3615 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2510 { 3616 {
2511 struct coro temp; 3617 struct coro *current = SvSTATE_current;
3618 struct CoroSLF slf_save;
2512 3619
2513 if (!(coro->flags & CF_RUNNING)) 3620 if (current != coro)
2514 { 3621 {
2515 PUTBACK; 3622 PUTBACK;
2516 save_perl (aTHX_ &temp); 3623 save_perl (aTHX_ current);
2517 load_perl (aTHX_ coro); 3624 load_perl (aTHX_ coro);
3625 /* the coro is most likely in an active SLF call.
3626 * while not strictly required (the code we execute is
3627 * not allowed to call any SLF functions), it's cleaner
3628 * to reinitialise the slf_frame and restore it later.
3629 * This might one day allow us to actually do SLF calls
3630 * from code executed here.
3631 */
3632 slf_save = slf_frame;
3633 slf_frame.prepare = 0;
3634 SPAGAIN;
2518 } 3635 }
2519 3636
2520 {
2521 dSP;
2522 ENTER;
2523 SAVETMPS;
2524 PUTBACK;
2525 PUSHSTACK; 3637 PUSHSTACK;
3638
2526 PUSHMARK (SP); 3639 PUSHMARK (SP);
3640 PUTBACK;
2527 3641
2528 if (ix) 3642 if (ix)
2529 eval_sv (coderef, 0); 3643 eval_sv (coderef, 0);
2530 else 3644 else
2531 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3645 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2532 3646
2533 POPSTACK; 3647 POPSTACK;
2534 SPAGAIN; 3648 SPAGAIN;
2535 FREETMPS;
2536 LEAVE;
2537 PUTBACK;
2538 }
2539 3649
2540 if (!(coro->flags & CF_RUNNING)) 3650 if (current != coro)
2541 { 3651 {
3652 PUTBACK;
3653 slf_frame = slf_save;
2542 save_perl (aTHX_ coro); 3654 save_perl (aTHX_ coro);
2543 load_perl (aTHX_ &temp); 3655 load_perl (aTHX_ current);
2544 SPAGAIN; 3656 SPAGAIN;
2545 } 3657 }
2546 } 3658 }
2547} 3659}
2548 3660
… …
2551 PROTOTYPE: $ 3663 PROTOTYPE: $
2552 ALIAS: 3664 ALIAS:
2553 is_ready = CF_READY 3665 is_ready = CF_READY
2554 is_running = CF_RUNNING 3666 is_running = CF_RUNNING
2555 is_new = CF_NEW 3667 is_new = CF_NEW
2556 is_destroyed = CF_DESTROYED 3668 is_destroyed = CF_ZOMBIE
3669 is_zombie = CF_ZOMBIE
3670 is_suspended = CF_SUSPENDED
2557 CODE: 3671 CODE:
2558 RETVAL = boolSV (coro->flags & ix); 3672 RETVAL = boolSV (coro->flags & ix);
2559 OUTPUT: 3673 OUTPUT:
2560 RETVAL 3674 RETVAL
2561 3675
2562void 3676void
2563throw (Coro::State self, SV *throw = &PL_sv_undef) 3677throw (SV *self, SV *exception = &PL_sv_undef)
2564 PROTOTYPE: $;$ 3678 PROTOTYPE: $;$
2565 CODE: 3679 CODE:
2566{ 3680{
3681 struct coro *coro = SvSTATE (self);
2567 struct coro *current = SvSTATE_current; 3682 struct coro *current = SvSTATE_current;
2568 SV **throwp = self == current ? &CORO_THROW : &self->except; 3683 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2569 SvREFCNT_dec (*throwp); 3684 SvREFCNT_dec (*exceptionp);
2570 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3685 SvGETMAGIC (exception);
3686 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3687
3688 api_ready (aTHX_ self);
2571} 3689}
2572 3690
2573void 3691void
2574api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3692api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2575 PROTOTYPE: $;$ 3693 PROTOTYPE: $;$
… …
2577 3695
2578SV * 3696SV *
2579has_cctx (Coro::State coro) 3697has_cctx (Coro::State coro)
2580 PROTOTYPE: $ 3698 PROTOTYPE: $
2581 CODE: 3699 CODE:
2582 RETVAL = boolSV (!!coro->cctx); 3700 /* maybe manage the running flag differently */
3701 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2583 OUTPUT: 3702 OUTPUT:
2584 RETVAL 3703 RETVAL
2585 3704
2586int 3705int
2587is_traced (Coro::State coro) 3706is_traced (Coro::State coro)
… …
2607 3726
2608void 3727void
2609force_cctx () 3728force_cctx ()
2610 PROTOTYPE: 3729 PROTOTYPE:
2611 CODE: 3730 CODE:
2612 SvSTATE_current->cctx->idle_sp = 0; 3731 cctx_current->idle_sp = 0;
2613 3732
2614void 3733void
2615swap_defsv (Coro::State self) 3734swap_defsv (Coro::State self)
2616 PROTOTYPE: $ 3735 PROTOTYPE: $
2617 ALIAS: 3736 ALIAS:
… …
2625 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3744 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2626 3745
2627 SV *tmp = *src; *src = *dst; *dst = tmp; 3746 SV *tmp = *src; *src = *dst; *dst = tmp;
2628 } 3747 }
2629 3748
3749void
3750cancel (Coro::State self)
3751 CODE:
3752 coro_state_destroy (aTHX_ self);
3753
3754SV *
3755enable_times (int enabled = enable_times)
3756 CODE:
3757{
3758 RETVAL = boolSV (enable_times);
3759
3760 if (enabled != enable_times)
3761 {
3762 enable_times = enabled;
3763
3764 coro_times_update ();
3765 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3766 }
3767}
3768 OUTPUT:
3769 RETVAL
3770
3771void
3772times (Coro::State self)
3773 PPCODE:
3774{
3775 struct coro *current = SvSTATE (coro_current);
3776
3777 if (ecb_expect_false (current == self))
3778 {
3779 coro_times_update ();
3780 coro_times_add (SvSTATE (coro_current));
3781 }
3782
3783 EXTEND (SP, 2);
3784 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3785 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3786
3787 if (ecb_expect_false (current == self))
3788 coro_times_sub (SvSTATE (coro_current));
3789}
3790
3791void
3792swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3793 CODE:
3794{
3795 struct coro *current = SvSTATE_current;
3796
3797 if (current == coro)
3798 SWAP_SVS (current);
3799
3800 if (!coro->swap_sv)
3801 coro->swap_sv = newAV ();
3802
3803 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3804 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3805
3806 if (current == coro)
3807 SWAP_SVS (current);
3808}
3809
2630 3810
2631MODULE = Coro::State PACKAGE = Coro 3811MODULE = Coro::State PACKAGE = Coro
2632 3812
2633BOOT: 3813BOOT:
2634{ 3814{
2635 int i;
2636
2637 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2638 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3815 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2639 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3816 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2640 3817 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2641 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3818 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2642 SvREADONLY_on (coro_current); 3819 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3820 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3821 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3822 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3823
3824 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3825 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3826 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3827 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2643 3828
2644 coro_stash = gv_stashpv ("Coro", TRUE); 3829 coro_stash = gv_stashpv ("Coro", TRUE);
2645 3830
2646 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3831 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2647 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3832 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2648 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3833 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2649 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3834 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2650 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3835 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2651 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3836 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2652
2653 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2654 coro_ready[i] = newAV ();
2655 3837
2656 { 3838 {
2657 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3839 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2658 3840
2659 coroapi.schedule = api_schedule; 3841 coroapi.schedule = api_schedule;
3842 coroapi.schedule_to = api_schedule_to;
2660 coroapi.cede = api_cede; 3843 coroapi.cede = api_cede;
2661 coroapi.cede_notself = api_cede_notself; 3844 coroapi.cede_notself = api_cede_notself;
2662 coroapi.ready = api_ready; 3845 coroapi.ready = api_ready;
2663 coroapi.is_ready = api_is_ready; 3846 coroapi.is_ready = api_is_ready;
2664 coroapi.nready = coro_nready; 3847 coroapi.nready = coro_nready;
… …
2668 sv_setiv (sv, (IV)&coroapi); 3851 sv_setiv (sv, (IV)&coroapi);
2669 SvREADONLY_on (sv); 3852 SvREADONLY_on (sv);
2670 } 3853 }
2671} 3854}
2672 3855
3856SV *
3857async (...)
3858 PROTOTYPE: &@
3859 CODE:
3860 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3861 api_ready (aTHX_ RETVAL);
3862 OUTPUT:
3863 RETVAL
3864
3865void
3866_destroy (Coro::State coro)
3867 CODE:
3868 /* used by the manager thread */
3869 coro_state_destroy (aTHX_ coro);
3870
3871void
3872on_destroy (Coro::State coro, SV *cb)
3873 CODE:
3874 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3875
3876void
3877join (...)
3878 CODE:
3879 CORO_EXECUTE_SLF_XS (slf_init_join);
3880
3881void
3882terminate (...)
3883 CODE:
3884 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3885
3886void
3887cancel (...)
3888 CODE:
3889 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3890
3891int
3892safe_cancel (Coro::State self, ...)
3893 C_ARGS: aTHX_ self, &ST (1), items - 1
3894
2673void 3895void
2674schedule (...) 3896schedule (...)
2675 CODE: 3897 CODE:
2676 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3898 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3899
3900void
3901schedule_to (...)
3902 CODE:
3903 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3904
3905void
3906cede_to (...)
3907 CODE:
3908 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2677 3909
2678void 3910void
2679cede (...) 3911cede (...)
2680 CODE: 3912 CODE:
2681 CORO_EXECUTE_SLF_XS (slf_init_cede); 3913 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2695void 3927void
2696_set_readyhook (SV *hook) 3928_set_readyhook (SV *hook)
2697 PROTOTYPE: $ 3929 PROTOTYPE: $
2698 CODE: 3930 CODE:
2699 SvREFCNT_dec (coro_readyhook); 3931 SvREFCNT_dec (coro_readyhook);
3932 SvGETMAGIC (hook);
3933 if (SvOK (hook))
3934 {
2700 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3935 coro_readyhook = newSVsv (hook);
3936 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3937 }
3938 else
3939 {
3940 coro_readyhook = 0;
3941 CORO_READYHOOK = 0;
3942 }
2701 3943
2702int 3944int
2703prio (Coro::State coro, int newprio = 0) 3945prio (Coro::State coro, int newprio = 0)
2704 PROTOTYPE: $;$ 3946 PROTOTYPE: $;$
2705 ALIAS: 3947 ALIAS:
… …
2711 if (items > 1) 3953 if (items > 1)
2712 { 3954 {
2713 if (ix) 3955 if (ix)
2714 newprio = coro->prio - newprio; 3956 newprio = coro->prio - newprio;
2715 3957
2716 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3958 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2717 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3959 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2718 3960
2719 coro->prio = newprio; 3961 coro->prio = newprio;
2720 } 3962 }
2721} 3963}
2722 OUTPUT: 3964 OUTPUT:
… …
2736 CODE: 3978 CODE:
2737 RETVAL = coro_nready; 3979 RETVAL = coro_nready;
2738 OUTPUT: 3980 OUTPUT:
2739 RETVAL 3981 RETVAL
2740 3982
2741# for async_pool speedup
2742void 3983void
2743_pool_1 (SV *cb) 3984suspend (Coro::State self)
3985 PROTOTYPE: $
2744 CODE: 3986 CODE:
2745{ 3987 self->flags |= CF_SUSPENDED;
2746 HV *hv = (HV *)SvRV (coro_current);
2747 struct coro *coro = SvSTATE_hv ((SV *)hv);
2748 AV *defav = GvAV (PL_defgv);
2749 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2750 AV *invoke_av;
2751 int i, len;
2752 3988
2753 if (!invoke) 3989void
3990resume (Coro::State self)
3991 PROTOTYPE: $
3992 CODE:
3993 self->flags &= ~CF_SUSPENDED;
3994
3995void
3996_pool_handler (...)
3997 CODE:
3998 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3999
4000void
4001async_pool (SV *cv, ...)
4002 PROTOTYPE: &@
4003 PPCODE:
4004{
4005 HV *hv = (HV *)av_pop (av_async_pool);
4006 AV *av = newAV ();
4007 SV *cb = ST (0);
4008 int i;
4009
4010 av_extend (av, items - 2);
4011 for (i = 1; i < items; ++i)
4012 av_push (av, SvREFCNT_inc_NN (ST (i)));
4013
4014 if ((SV *)hv == &PL_sv_undef)
2754 { 4015 {
2755 SV *old = PL_diehook; 4016 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2756 PL_diehook = 0; 4017 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2757 SvREFCNT_dec (old); 4018 SvREFCNT_dec (sv);
2758 croak ("\3async_pool terminate\2\n");
2759 } 4019 }
2760 4020
2761 SvREFCNT_dec (coro->saved_deffh);
2762 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2763
2764 hv_store (hv, "desc", sizeof ("desc") - 1,
2765 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2766
2767 invoke_av = (AV *)SvRV (invoke);
2768 len = av_len (invoke_av);
2769
2770 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2771
2772 if (len > 0)
2773 { 4021 {
2774 av_fill (defav, len - 1); 4022 struct coro *coro = SvSTATE_hv (hv);
2775 for (i = 0; i < len; ++i) 4023
2776 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4024 assert (!coro->invoke_cb);
4025 assert (!coro->invoke_av);
4026 coro->invoke_cb = SvREFCNT_inc (cb);
4027 coro->invoke_av = av;
2777 } 4028 }
4029
4030 api_ready (aTHX_ (SV *)hv);
4031
4032 if (GIMME_V != G_VOID)
4033 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4034 else
4035 SvREFCNT_dec (hv);
2778} 4036}
4037
4038SV *
4039rouse_cb ()
4040 PROTOTYPE:
4041 CODE:
4042 RETVAL = coro_new_rouse_cb (aTHX);
4043 OUTPUT:
4044 RETVAL
2779 4045
2780void 4046void
2781_pool_2 (SV *cb) 4047rouse_wait (...)
4048 PROTOTYPE: ;$
4049 PPCODE:
4050 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4051
4052void
4053on_enter (SV *block)
4054 ALIAS:
4055 on_leave = 1
4056 PROTOTYPE: &
2782 CODE: 4057 CODE:
2783{ 4058{
2784 HV *hv = (HV *)SvRV (coro_current);
2785 struct coro *coro = SvSTATE_hv ((SV *)hv); 4059 struct coro *coro = SvSTATE_current;
4060 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2786 4061
2787 sv_setsv (cb, &PL_sv_undef); 4062 block = s_get_cv_croak (block);
2788 4063
2789 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4064 if (!*avp)
2790 coro->saved_deffh = 0; 4065 *avp = newAV ();
2791 4066
2792 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4067 av_push (*avp, SvREFCNT_inc (block));
2793 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2794 {
2795 SV *old = PL_diehook;
2796 PL_diehook = 0;
2797 SvREFCNT_dec (old);
2798 croak ("\3async_pool terminate\2\n");
2799 }
2800 4068
2801 av_clear (GvAV (PL_defgv)); 4069 if (!ix)
2802 hv_store (hv, "desc", sizeof ("desc") - 1, 4070 on_enterleave_call (aTHX_ block);
2803 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2804 4071
2805 coro->prio = 0; 4072 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2806 4073 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2807 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4074 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2808 api_trace (aTHX_ coro_current, 0);
2809
2810 av_push (av_async_pool, newSVsv (coro_current));
2811} 4075}
2812 4076
2813 4077
2814MODULE = Coro::State PACKAGE = PerlIO::cede 4078MODULE = Coro::State PACKAGE = PerlIO::cede
2815 4079
… …
2820MODULE = Coro::State PACKAGE = Coro::Semaphore 4084MODULE = Coro::State PACKAGE = Coro::Semaphore
2821 4085
2822SV * 4086SV *
2823new (SV *klass, SV *count = 0) 4087new (SV *klass, SV *count = 0)
2824 CODE: 4088 CODE:
4089{
4090 int semcnt = 1;
4091
4092 if (count)
4093 {
4094 SvGETMAGIC (count);
4095
4096 if (SvOK (count))
4097 semcnt = SvIV (count);
4098 }
4099
2825 RETVAL = sv_bless ( 4100 RETVAL = sv_bless (
2826 coro_semaphore_new (count && SvOK (count) ? SvIV (count) : 1), 4101 coro_waitarray_new (aTHX_ semcnt),
2827 GvSTASH (CvGV (cv)) 4102 GvSTASH (CvGV (cv))
2828 ); 4103 );
4104}
2829 OUTPUT: 4105 OUTPUT:
2830 RETVAL 4106 RETVAL
2831 4107
2832# helper for Coro::Channel 4108# helper for Coro::Channel and others
2833SV * 4109SV *
2834_alloc (int count) 4110_alloc (int count)
2835 CODE: 4111 CODE:
2836 RETVAL = coro_semaphore_new (count); 4112 RETVAL = coro_waitarray_new (aTHX_ count);
2837 OUTPUT: 4113 OUTPUT:
2838 RETVAL 4114 RETVAL
2839 4115
2840SV * 4116SV *
2841count (SV *self) 4117count (SV *self)
… …
2850 adjust = 1 4126 adjust = 1
2851 CODE: 4127 CODE:
2852 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4128 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2853 4129
2854void 4130void
2855down (SV *self) 4131down (...)
2856 ALIAS:
2857 Coro::Signal::wait = 0
2858 CODE: 4132 CODE:
2859 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4133 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2860 4134
2861void 4135void
2862wait (SV *self) 4136wait (...)
2863 CODE: 4137 CODE:
2864 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); 4138 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2865 4139
2866void 4140void
2867try (SV *self) 4141try (SV *self)
… …
2881 XSRETURN_NO; 4155 XSRETURN_NO;
2882} 4156}
2883 4157
2884void 4158void
2885waiters (SV *self) 4159waiters (SV *self)
2886 PPCODE: 4160 PPCODE:
2887{ 4161{
2888 AV *av = (AV *)SvRV (self); 4162 AV *av = (AV *)SvRV (self);
2889 int wcount = AvFILLp (av) + 1 - 1; 4163 int wcount = AvFILLp (av) + 1 - 1;
2890 4164
2891 if (GIMME_V == G_SCALAR) 4165 if (GIMME_V == G_SCALAR)
… …
2897 for (i = 1; i <= wcount; ++i) 4171 for (i = 1; i <= wcount; ++i)
2898 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4172 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2899 } 4173 }
2900} 4174}
2901 4175
4176MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4177
4178void
4179_may_delete (SV *sem, int count, unsigned int extra_refs)
4180 PPCODE:
4181{
4182 AV *av = (AV *)SvRV (sem);
4183
4184 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4185 && AvFILLp (av) == 0 /* no waiters, just count */
4186 && SvIV (AvARRAY (av)[0]) == count)
4187 XSRETURN_YES;
4188
4189 XSRETURN_NO;
4190}
4191
2902MODULE = Coro::State PACKAGE = Coro::Signal 4192MODULE = Coro::State PACKAGE = Coro::Signal
2903 4193
2904SV * 4194SV *
2905new (SV *klass) 4195new (SV *klass)
2906 CODE: 4196 CODE:
2907 RETVAL = sv_bless ( 4197 RETVAL = sv_bless (
2908 coro_semaphore_new (0), 4198 coro_waitarray_new (aTHX_ 0),
2909 GvSTASH (CvGV (cv)) 4199 GvSTASH (CvGV (cv))
2910 ); 4200 );
2911 OUTPUT: 4201 OUTPUT:
2912 RETVAL 4202 RETVAL
2913 4203
2914void 4204void
2915broadcast (SV *self, int adjust = 1) 4205wait (...)
2916 CODE: 4206 CODE:
4207 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4208
4209void
4210broadcast (SV *self)
4211 CODE:
2917{ 4212{
2918 AV *av = (AV *)SvRV (self); 4213 AV *av = (AV *)SvRV (self);
2919 SvIVX (AvARRAY (av)[0]) = 0; /* not necessary, but gives me fuzzy warm feelings */ 4214 coro_signal_wake (aTHX_ av, AvFILLp (av));
2920 coro_semaphore_adjust (aTHX_ av, AvFILLp (av) + 1 - 1); 4215}
4216
4217void
4218send (SV *self)
4219 CODE:
4220{
4221 AV *av = (AV *)SvRV (self);
4222
4223 if (AvFILLp (av))
4224 coro_signal_wake (aTHX_ av, 1);
4225 else
2921 SvIVX (AvARRAY (av)[0]) = 0; /* necessary */ 4226 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2922} 4227}
4228
4229IV
4230awaited (SV *self)
4231 CODE:
4232 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4233 OUTPUT:
4234 RETVAL
2923 4235
2924 4236
2925MODULE = Coro::State PACKAGE = Coro::AnyEvent 4237MODULE = Coro::State PACKAGE = Coro::AnyEvent
2926 4238
2927BOOT: 4239BOOT:
… …
2929 4241
2930void 4242void
2931_schedule (...) 4243_schedule (...)
2932 CODE: 4244 CODE:
2933{ 4245{
2934 static int incede; 4246 static int incede;
2935 4247
2936 api_cede_notself (aTHX); 4248 api_cede_notself (aTHX);
2937 4249
2938 ++incede; 4250 ++incede;
2939 while (coro_nready >= incede && api_cede (aTHX)) 4251 while (coro_nready >= incede && api_cede (aTHX))
… …
2955 4267
2956void 4268void
2957_register (char *target, char *proto, SV *req) 4269_register (char *target, char *proto, SV *req)
2958 CODE: 4270 CODE:
2959{ 4271{
2960 HV *st; 4272 SV *req_cv = s_get_cv_croak (req);
2961 GV *gvp;
2962 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2963 /* newXSproto doesn't return the CV on 5.8 */ 4273 /* newXSproto doesn't return the CV on 5.8 */
2964 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4274 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2965 sv_setpv ((SV *)slf_cv, proto); 4275 sv_setpv ((SV *)slf_cv, proto);
2966 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4276 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2967} 4277}
2968 4278
4279MODULE = Coro::State PACKAGE = Coro::Select
4280
4281void
4282patch_pp_sselect ()
4283 CODE:
4284 if (!coro_old_pp_sselect)
4285 {
4286 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4287 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4288 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4289 }
4290
4291void
4292unpatch_pp_sselect ()
4293 CODE:
4294 if (coro_old_pp_sselect)
4295 {
4296 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4297 coro_old_pp_sselect = 0;
4298 }
4299
4300MODULE = Coro::State PACKAGE = Coro::Util
4301
4302void
4303_exit (int code)
4304 CODE:
4305 _exit (code);
4306
4307NV
4308time ()
4309 CODE:
4310 RETVAL = nvtime (aTHX);
4311 OUTPUT:
4312 RETVAL
4313
4314NV
4315gettimeofday ()
4316 PPCODE:
4317{
4318 UV tv [2];
4319 u2time (aTHX_ tv);
4320 EXTEND (SP, 2);
4321 PUSHs (sv_2mortal (newSVuv (tv [0])));
4322 PUSHs (sv_2mortal (newSVuv (tv [1])));
4323}
4324

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