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Comparing Coro/Coro/State.xs (file contents):
Revision 1.333 by root, Thu Nov 27 12:39:00 2008 UTC vs.
Revision 1.470 by root, Fri Jul 14 13:14:32 2017 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 SvREFCNT_dec_NN
28 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
29#endif
30
31#ifndef SvREFCNT_inc_NN
32 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
33#endif
34
35#ifndef SVs_PADSTALE
36# define SVs_PADSTALE 0
37#endif
38
39#ifdef PadARRAY
40# define NEWPADAPI 1
41# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
42#else
43typedef AV PADNAMELIST;
44# if !PERL_VERSION_ATLEAST(5,8,0)
45typedef AV PADLIST;
46typedef AV PAD;
47# endif
48# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
49# define PadlistMAX(pl) AvFILLp (pl)
50# define PadlistNAMES(pl) (*PadlistARRAY (pl))
51# define PadARRAY AvARRAY
52# define PadMAX AvFILLp
53# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
54#endif
55#ifndef PadnamelistREFCNT
56# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
57#endif
58#ifndef PadnamelistREFCNT_dec
59# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
60#endif
61
62/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
63/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
64#if PERL_VERSION_ATLEAST(5,19,0)
65# define SVt_BIND SVt_IV
66#endif
67
68#if defined(_WIN32)
69# undef HAS_GETTIMEOFDAY
18# undef setjmp 70# undef setjmp
19# undef longjmp 71# undef longjmp
20# undef _exit 72# undef _exit
21# define setjmp _setjmp /* deep magic */ 73# define setjmp _setjmp /* deep magic */
22#else 74#else
23# include <inttypes.h> /* most portable stdint.h */ 75# include <inttypes.h> /* most portable stdint.h */
24#endif 76#endif
25 77
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 */ 78/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 79static int cctx_max_idle = 4;
55 80
56#define PERL_VERSION_ATLEAST(a,b,c) \ 81#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 82# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (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#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
110/* 5.8.7 */
111#ifndef SvRV_set
112# define SvRV_set(s,v) SvRV(s) = (v)
113#endif
114
115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
116# undef CORO_STACKGUARD
117#endif
118
119#ifndef CORO_STACKGUARD
120# define CORO_STACKGUARD 0
121#endif 83#endif
122 84
123/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
124#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
125# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
… …
135# define STACKLEVEL ((void *)&stacklevel) 97# define STACKLEVEL ((void *)&stacklevel)
136#endif 98#endif
137 99
138#define IN_DESTRUCT PL_dirty 100#define IN_DESTRUCT PL_dirty
139 101
140#if __GNUC__ >= 3
141# define attribute(x) __attribute__(x)
142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
144#else
145# define attribute(x)
146# define expect(expr,value) (expr)
147# define INLINE static
148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
152
153#define NOINLINE attribute ((noinline))
154
155#include "CoroAPI.h" 102#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */ 103#define GCoroAPI (&coroapi) /* very sneaky */
157 104
158#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
159# if CORO_PTHREAD 106# if CORO_PTHREAD
160static void *coro_thx; 107static void *coro_thx;
161# endif 108# endif
162#endif 109#endif
163 110
111#ifdef __linux
112# include <time.h> /* for timespec */
113# include <syscall.h> /* for SYS_* */
114# ifdef SYS_clock_gettime
115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
116# define CORO_CLOCK_MONOTONIC 1
117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
118# endif
119#endif
120
121#if PERL_VERSION_ATLEAST(5,24,0)
122# define SUB_ARGARRAY PL_curpad[0]
123#else
124# define SUB_ARGARRAY (SV *)cx->blk_sub.argarray
125#endif
126
127/* perl usually suppresses asserts. for debugging, we sometimes force it to be on */
128#if 0
129# undef NDEBUG
130# include <assert.h>
131#endif
132
164static double (*nvtime)(); /* so why doesn't it take void? */ 133static double (*nvtime)(); /* so why doesn't it take void? */
134static void (*u2time)(pTHX_ UV ret[2]);
165 135
166/* we hijack an hopefully unused CV flag for our purposes */ 136/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000 137#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX); 138static OP *pp_slf (pTHX);
139static void slf_destroy (pTHX_ struct coro *coro);
169 140
170static U32 cctx_gen; 141static U32 cctx_gen;
171static size_t cctx_stacksize = CORO_STACKSIZE; 142static size_t cctx_stacksize = CORO_STACKSIZE;
172static struct CoroAPI coroapi; 143static struct CoroAPI coroapi;
173static AV *main_mainstack; /* used to differentiate between $main and others */ 144static AV *main_mainstack; /* used to differentiate between $main and others */
… …
181 152
182static GV *irsgv; /* $/ */ 153static GV *irsgv; /* $/ */
183static GV *stdoutgv; /* *STDOUT */ 154static GV *stdoutgv; /* *STDOUT */
184static SV *rv_diehook; 155static SV *rv_diehook;
185static SV *rv_warnhook; 156static SV *rv_warnhook;
186static HV *hv_sig; /* %SIG */
187 157
188/* async_pool helper stuff */ 158/* async_pool helper stuff */
189static SV *sv_pool_rss; 159static SV *sv_pool_rss;
190static SV *sv_pool_size; 160static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */ 161static SV *sv_async_pool_idle; /* description string */
192static AV *av_async_pool; /* idle pool */ 162static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */ 163static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler; 164static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
196 165
197/* Coro::AnyEvent */ 166/* Coro::AnyEvent */
198static SV *sv_activity; 167static SV *sv_activity;
199 168
169/* enable processtime/realtime profiling */
170static char enable_times;
171typedef U32 coro_ts[2];
172static coro_ts time_real, time_cpu;
173static char times_valid;
174
200static struct coro_cctx *cctx_first; 175static struct coro_cctx *cctx_first;
201static int cctx_count, cctx_idle; 176static int cctx_count, cctx_idle;
202 177
203enum { 178enum
179{
204 CC_MAPPED = 0x01, 180 CC_MAPPED = 0x01,
205 CC_NOREUSE = 0x02, /* throw this away after tracing */ 181 CC_NOREUSE = 0x02, /* throw this away after tracing */
206 CC_TRACE = 0x04, 182 CC_TRACE = 0x04,
207 CC_TRACE_SUB = 0x08, /* trace sub calls */ 183 CC_TRACE_SUB = 0x08, /* trace sub calls */
208 CC_TRACE_LINE = 0x10, /* trace each statement */ 184 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
213typedef struct coro_cctx 189typedef struct coro_cctx
214{ 190{
215 struct coro_cctx *next; 191 struct coro_cctx *next;
216 192
217 /* the stack */ 193 /* the stack */
218 void *sptr; 194 struct coro_stack stack;
219 size_t ssize;
220 195
221 /* cpu state */ 196 /* cpu state */
222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 197 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
198#ifndef NDEBUG
223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 199 JMPENV *idle_te; /* same as idle_sp, but for top_env */
200#endif
224 JMPENV *top_env; 201 JMPENV *top_env;
225 coro_context cctx; 202 coro_context cctx;
226 203
227 U32 gen; 204 U32 gen;
228#if CORO_USE_VALGRIND 205#if CORO_USE_VALGRIND
229 int valgrind_id; 206 int valgrind_id;
230#endif 207#endif
231 unsigned char flags; 208 unsigned char flags;
232} coro_cctx; 209} coro_cctx;
233 210
234coro_cctx *cctx_current; /* the currently running cctx */ 211static coro_cctx *cctx_current; /* the currently running cctx */
235 212
236/*****************************************************************************/ 213/*****************************************************************************/
237 214
215static MGVTBL coro_state_vtbl;
216
238enum { 217enum
218{
239 CF_RUNNING = 0x0001, /* coroutine is running */ 219 CF_RUNNING = 0x0001, /* coroutine is running */
240 CF_READY = 0x0002, /* coroutine is ready */ 220 CF_READY = 0x0002, /* coroutine is ready */
241 CF_NEW = 0x0004, /* has never been switched to */ 221 CF_NEW = 0x0004, /* has never been switched to */
242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 222 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
223 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
224 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
243}; 225};
244 226
245/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
246typedef struct 228typedef struct
247{ 229{
248 SV *defsv;
249 AV *defav;
250 SV *errsv;
251 SV *irsgv;
252 HV *hinthv;
253#define VAR(name,type) type name; 230 #define VARx(name,expr,type) type name;
254# include "state.h" 231 #include "state.h"
255#undef VAR
256} perl_slots; 232} perl_slots;
257 233
234/* how many context stack entries do we need for perl_slots */
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 235#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 236
260/* this is a structure representing a perl-level coroutine */ 237/* this is a structure representing a perl-level coroutine */
261struct coro { 238struct coro
239{
262 /* the C coroutine allocated to this perl coroutine, if any */ 240 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 241 coro_cctx *cctx;
242
243 /* ready queue */
244 struct coro *next_ready;
264 245
265 /* state data */ 246 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */ 247 struct CoroSLF slf_frame; /* saved slf frame */
267 AV *mainstack; 248 AV *mainstack;
268 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
269 250
270 CV *startcv; /* the CV to execute */ 251 CV *startcv; /* the CV to execute */
271 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
272 int refcnt; /* coroutines are refcounted, yes */
273 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
274 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
276 255
277 /* statistics */ 256 /* statistics */
278 int usecount; /* number of transfers to this coro */ 257 int usecount; /* number of transfers to this coro */
279 258
280 /* coro process data */ 259 /* coro process data */
281 int prio; 260 int prio;
282 SV *except; /* exception to be thrown */ 261 SV *except; /* exception to be thrown */
283 SV *rouse_cb; 262 SV *rouse_cb; /* last rouse callback */
263 AV *on_destroy; /* callbacks or coros to notify on destroy */
264 AV *status; /* the exit status list */
284 265
285 /* async_pool */ 266 /* async_pool */
286 SV *saved_deffh; 267 SV *saved_deffh;
287 SV *invoke_cb; 268 SV *invoke_cb;
288 AV *invoke_av; 269 AV *invoke_av;
289 270
271 /* on_enter/on_leave */
272 AV *on_enter; AV *on_enter_xs;
273 AV *on_leave; AV *on_leave_xs;
274
275 /* swap_sv */
276 AV *swap_sv;
277
278 /* times */
279 coro_ts t_cpu, t_real;
280
290 /* linked list */ 281 /* linked list */
291 struct coro *next, *prev; 282 struct coro *next, *prev;
292}; 283};
293 284
294typedef struct coro *Coro__State; 285typedef struct coro *Coro__State;
295typedef struct coro *Coro__State_or_hashref; 286typedef struct coro *Coro__State_or_hashref;
296 287
297/* the following variables are effectively part of the perl context */ 288/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */ 289/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */ 290/* the main reason we don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */ 291static struct CoroSLF slf_frame; /* the current slf frame */
301 292
302/** Coro ********************************************************************/ 293/** Coro ********************************************************************/
303 294
304#define PRIO_MAX 3 295#define CORO_PRIO_MAX 3
305#define PRIO_HIGH 1 296#define CORO_PRIO_HIGH 1
306#define PRIO_NORMAL 0 297#define CORO_PRIO_NORMAL 0
307#define PRIO_LOW -1 298#define CORO_PRIO_LOW -1
308#define PRIO_IDLE -3 299#define CORO_PRIO_IDLE -3
309#define PRIO_MIN -4 300#define CORO_PRIO_MIN -4
310 301
311/* for Coro.pm */ 302/* for Coro.pm */
312static SV *coro_current; 303static SV *coro_current;
313static SV *coro_readyhook; 304static SV *coro_readyhook;
314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 305static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
315static CV *cv_coro_run, *cv_coro_terminate; 306static CV *cv_coro_run;
316static struct coro *coro_first; 307static struct coro *coro_first;
317#define coro_nready coroapi.nready 308#define coro_nready coroapi.nready
318 309
310/** JIT *********************************************************************/
311
312#if CORO_JIT
313 /* APPLE doesn't have mmap though */
314 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
315 #ifndef CORO_JIT_TYPE
316 #if ECB_AMD64 && CORO_JIT_UNIXY
317 #define CORO_JIT_TYPE "amd64-unix"
318 #elif __i386 && CORO_JIT_UNIXY
319 #define CORO_JIT_TYPE "x86-unix"
320 #endif
321 #endif
322#endif
323
324#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
325 #undef CORO_JIT
326#endif
327
328#if CORO_JIT
329 typedef void (*load_save_perl_slots_type)(perl_slots *);
330 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
331#endif
332
333/** Coro::Select ************************************************************/
334
335static OP *(*coro_old_pp_sselect) (pTHX);
336static SV *coro_select_select;
337
338/* horrible hack, but if it works... */
339static OP *
340coro_pp_sselect (pTHX)
341{
342 dSP;
343 PUSHMARK (SP - 4); /* fake argument list */
344 XPUSHs (coro_select_select);
345 PUTBACK;
346
347 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
348 PL_op->op_flags |= OPf_STACKED;
349 PL_op->op_private = 0;
350 return PL_ppaddr [OP_ENTERSUB](aTHX);
351}
352
353/** time stuff **************************************************************/
354
355#ifdef HAS_GETTIMEOFDAY
356
357ecb_inline void
358coro_u2time (pTHX_ UV ret[2])
359{
360 struct timeval tv;
361 gettimeofday (&tv, 0);
362
363 ret [0] = tv.tv_sec;
364 ret [1] = tv.tv_usec;
365}
366
367ecb_inline double
368coro_nvtime (void)
369{
370 struct timeval tv;
371 gettimeofday (&tv, 0);
372
373 return tv.tv_sec + tv.tv_usec * 1e-6;
374}
375
376ecb_inline void
377time_init (pTHX)
378{
379 nvtime = coro_nvtime;
380 u2time = coro_u2time;
381}
382
383#else
384
385ecb_inline void
386time_init (pTHX)
387{
388 SV **svp;
389
390 require_pv ("Time/HiRes.pm");
391
392 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
393
394 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
395 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
396
397 nvtime = INT2PTR (double (*)(), SvIV (*svp));
398
399 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
400 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
401}
402
403#endif
404
319/** lowlevel stuff **********************************************************/ 405/** lowlevel stuff **********************************************************/
320 406
321static SV * 407static SV * ecb_noinline
322coro_get_sv (pTHX_ const char *name, int create) 408coro_get_sv (pTHX_ const char *name, int create)
323{ 409{
324#if PERL_VERSION_ATLEAST (5,10,0) 410#if PERL_VERSION_ATLEAST (5,10,0)
325 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 411 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
326 get_sv (name, create); 412 get_sv (name, create);
327#endif 413#endif
328 return get_sv (name, create); 414 return get_sv (name, create);
329} 415}
330 416
331static AV * 417static AV * ecb_noinline
332coro_get_av (pTHX_ const char *name, int create) 418coro_get_av (pTHX_ const char *name, int create)
333{ 419{
334#if PERL_VERSION_ATLEAST (5,10,0) 420#if PERL_VERSION_ATLEAST (5,10,0)
335 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 421 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
336 get_av (name, create); 422 get_av (name, create);
337#endif 423#endif
338 return get_av (name, create); 424 return get_av (name, create);
339} 425}
340 426
341static HV * 427static HV * ecb_noinline
342coro_get_hv (pTHX_ const char *name, int create) 428coro_get_hv (pTHX_ const char *name, int create)
343{ 429{
344#if PERL_VERSION_ATLEAST (5,10,0) 430#if PERL_VERSION_ATLEAST (5,10,0)
345 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 431 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
346 get_hv (name, create); 432 get_hv (name, create);
347#endif 433#endif
348 return get_hv (name, create); 434 return get_hv (name, create);
349} 435}
350 436
351/* may croak */ 437ecb_inline void
352INLINE CV * 438coro_times_update (void)
353coro_sv_2cv (pTHX_ SV *sv)
354{ 439{
355 HV *st; 440#ifdef coro_clock_gettime
356 GV *gvp; 441 struct timespec ts;
357 return sv_2cv (sv, &st, &gvp, 0); 442
443 ts.tv_sec = ts.tv_nsec = 0;
444 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
445 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
446
447 ts.tv_sec = ts.tv_nsec = 0;
448 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
449 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
450#else
451 dTHX;
452 UV tv[2];
453
454 u2time (aTHX_ tv);
455 time_real [0] = tv [0];
456 time_real [1] = tv [1] * 1000;
457#endif
458}
459
460ecb_inline void
461coro_times_add (struct coro *c)
462{
463 c->t_real [1] += time_real [1];
464 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
465 c->t_real [0] += time_real [0];
466
467 c->t_cpu [1] += time_cpu [1];
468 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
469 c->t_cpu [0] += time_cpu [0];
470}
471
472ecb_inline void
473coro_times_sub (struct coro *c)
474{
475 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
476 c->t_real [1] -= time_real [1];
477 c->t_real [0] -= time_real [0];
478
479 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
480 c->t_cpu [1] -= time_cpu [1];
481 c->t_cpu [0] -= time_cpu [0];
358} 482}
359 483
360/*****************************************************************************/ 484/*****************************************************************************/
361/* magic glue */ 485/* magic glue */
362 486
363#define CORO_MAGIC_type_cv 26 487#define CORO_MAGIC_type_cv 26
364#define CORO_MAGIC_type_state PERL_MAGIC_ext 488#define CORO_MAGIC_type_state PERL_MAGIC_ext
365 489
366#define CORO_MAGIC_NN(sv, type) \ 490#define CORO_MAGIC_NN(sv, type) \
367 (expect_true (SvMAGIC (sv)->mg_type == type) \ 491 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
368 ? SvMAGIC (sv) \ 492 ? SvMAGIC (sv) \
369 : mg_find (sv, type)) 493 : mg_find (sv, type))
370 494
371#define CORO_MAGIC(sv, type) \ 495#define CORO_MAGIC(sv, type) \
372 (expect_true (SvMAGIC (sv)) \ 496 (ecb_expect_true (SvMAGIC (sv)) \
373 ? CORO_MAGIC_NN (sv, type) \ 497 ? CORO_MAGIC_NN (sv, type) \
374 : 0) 498 : 0)
375 499
376#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 500#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
377#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) 501#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
378 502
379INLINE struct coro * 503ecb_inline MAGIC *
380SvSTATE_ (pTHX_ SV *coro) 504SvSTATEhv_p (pTHX_ SV *coro)
381{ 505{
382 HV *stash;
383 MAGIC *mg; 506 MAGIC *mg;
384 507
508 if (ecb_expect_true (
509 SvTYPE (coro) == SVt_PVHV
510 && (mg = CORO_MAGIC_state (coro))
511 && mg->mg_virtual == &coro_state_vtbl
512 ))
513 return mg;
514
515 return 0;
516}
517
518ecb_inline struct coro *
519SvSTATE_ (pTHX_ SV *coro_sv)
520{
521 MAGIC *mg;
522
385 if (SvROK (coro)) 523 if (SvROK (coro_sv))
386 coro = SvRV (coro); 524 coro_sv = SvRV (coro_sv);
387 525
388 if (expect_false (SvTYPE (coro) != SVt_PVHV)) 526 mg = SvSTATEhv_p (aTHX_ coro_sv);
527 if (!mg)
389 croak ("Coro::State object required"); 528 croak ("Coro::State object required");
390 529
391 stash = SvSTASH (coro);
392 if (expect_false (stash != coro_stash && stash != coro_state_stash))
393 {
394 /* very slow, but rare, check */
395 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
396 croak ("Coro::State object required");
397 }
398
399 mg = CORO_MAGIC_state (coro);
400 return (struct coro *)mg->mg_ptr; 530 return (struct coro *)mg->mg_ptr;
401} 531}
402 532
403#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 533#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
404 534
… …
407#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 537#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
408 538
409/*****************************************************************************/ 539/*****************************************************************************/
410/* padlist management and caching */ 540/* padlist management and caching */
411 541
412static AV * 542ecb_inline PADLIST *
413coro_derive_padlist (pTHX_ CV *cv) 543coro_derive_padlist (pTHX_ CV *cv)
414{ 544{
415 AV *padlist = CvPADLIST (cv); 545 PADLIST *padlist = CvPADLIST (cv);
416 AV *newpadlist, *newpad; 546 PADLIST *newpadlist;
547 PADNAMELIST *padnames;
548 PAD *newpad;
549 PADOFFSET off = PadlistMAX (padlist) + 1;
417 550
418 newpadlist = newAV (); 551#if NEWPADAPI
552
553 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
554 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
555 while (!PadlistARRAY (padlist)[off - 1])
556 --off;
557
558 Perl_pad_push (aTHX_ padlist, off);
559
560 newpad = PadlistARRAY (padlist)[off];
561 PadlistARRAY (padlist)[off] = 0;
562
563#else
564
565#if PERL_VERSION_ATLEAST (5,10,0)
566 Perl_pad_push (aTHX_ padlist, off);
567#else
568 Perl_pad_push (aTHX_ padlist, off, 1);
569#endif
570
571 newpad = PadlistARRAY (padlist)[off];
572 PadlistMAX (padlist) = off - 1;
573
574#endif
575
576 newPADLIST (newpadlist);
577#if !PERL_VERSION_ATLEAST(5,15,3)
578 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
419 AvREAL_off (newpadlist); 579 AvREAL_off (newpadlist);
420#if PERL_VERSION_ATLEAST (5,10,0)
421 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
422#else
423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
424#endif 580#endif
425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
426 --AvFILLp (padlist);
427 581
428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0])); 582 /* Already extended to 2 elements by newPADLIST. */
429 av_store (newpadlist, 1, (SV *)newpad); 583 PadlistMAX (newpadlist) = 1;
584
585 padnames = PadlistNAMES (padlist);
586 ++PadnamelistREFCNT (padnames);
587 PadlistNAMES (newpadlist) = padnames;
588
589 PadlistARRAY (newpadlist)[1] = newpad;
430 590
431 return newpadlist; 591 return newpadlist;
432} 592}
433 593
434static void 594ecb_inline void
435free_padlist (pTHX_ AV *padlist) 595free_padlist (pTHX_ PADLIST *padlist)
436{ 596{
437 /* may be during global destruction */ 597 /* may be during global destruction */
438 if (!IN_DESTRUCT) 598 if (!IN_DESTRUCT)
439 { 599 {
440 I32 i = AvFILLp (padlist); 600 I32 i = PadlistMAX (padlist);
441 601
442 while (i > 0) /* special-case index 0 */ 602 while (i > 0) /* special-case index 0 */
443 { 603 {
444 /* we try to be extra-careful here */ 604 /* we try to be extra-careful here */
445 AV *av = (AV *)AvARRAY (padlist)[i--]; 605 PAD *pad = PadlistARRAY (padlist)[i--];
446 I32 j = AvFILLp (av);
447 606
607 if (pad)
608 {
609 I32 j = PadMAX (pad);
610
448 while (j >= 0) 611 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]); 612 SvREFCNT_dec (PadARRAY (pad)[j--]);
450 613
451 AvFILLp (av) = -1; 614 PadMAX (pad) = -1;
452 SvREFCNT_dec (av); 615 SvREFCNT_dec (pad);
616 }
453 } 617 }
454 618
455 SvREFCNT_dec (AvARRAY (padlist)[0]); 619 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
456 620
621#if NEWPADAPI
622 Safefree (PadlistARRAY (padlist));
623 Safefree (padlist);
624#else
457 AvFILLp (padlist) = -1; 625 AvFILLp (padlist) = -1;
626 AvREAL_off (padlist);
458 SvREFCNT_dec ((SV*)padlist); 627 SvREFCNT_dec ((SV*)padlist);
628#endif
459 } 629 }
460} 630}
461 631
462static int 632static int
463coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 633coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
464{ 634{
465 AV *padlist; 635 PADLIST *padlist;
466 AV *av = (AV *)mg->mg_obj; 636 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
637 size_t len = *(size_t *)mg->mg_ptr;
467 638
468 /* casting is fun. */ 639 /* perl manages to free our internal AV and _then_ call us */
469 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 640 if (IN_DESTRUCT)
641 return 0;
642
643 while (len--)
470 free_padlist (aTHX_ padlist); 644 free_padlist (aTHX_ padlists[len]);
471
472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
473 645
474 return 0; 646 return 0;
475} 647}
476 648
477static MGVTBL coro_cv_vtbl = { 649static MGVTBL coro_cv_vtbl = {
478 0, 0, 0, 0, 650 0, 0, 0, 0,
479 coro_cv_free 651 coro_cv_free
480}; 652};
481 653
482/* the next two functions merely cache the padlists */ 654/* the next two functions merely cache the padlists */
483static void 655ecb_inline void
484get_padlist (pTHX_ CV *cv) 656get_padlist (pTHX_ CV *cv)
485{ 657{
486 MAGIC *mg = CORO_MAGIC_cv (cv); 658 MAGIC *mg = CORO_MAGIC_cv (cv);
487 AV *av; 659 size_t *lenp;
488 660
489 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 661 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
490 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 662 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
491 else 663 else
492 { 664 {
493#if CORO_PREFER_PERL_FUNCTIONS 665#if CORO_PREFER_PERL_FUNCTIONS
494 /* this is probably cleaner? but also slower! */ 666 /* this is probably cleaner? but also slower! */
495 /* in practise, it seems to be less stable */ 667 /* in practise, it seems to be less stable */
… …
501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); 673 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
502#endif 674#endif
503 } 675 }
504} 676}
505 677
506static void 678ecb_inline void
507put_padlist (pTHX_ CV *cv) 679put_padlist (pTHX_ CV *cv)
508{ 680{
509 MAGIC *mg = CORO_MAGIC_cv (cv); 681 MAGIC *mg = CORO_MAGIC_cv (cv);
510 AV *av;
511 682
512 if (expect_false (!mg)) 683 if (ecb_expect_false (!mg))
684 {
513 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 685 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
686 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
687 mg->mg_len = 1; /* so mg_free frees mg_ptr */
688 }
689 else
690 Renew (mg->mg_ptr,
691 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
692 char);
514 693
515 av = (AV *)mg->mg_obj; 694 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
516
517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
518 av_extend (av, AvFILLp (av) + 1);
519
520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
521} 695}
522 696
523/** load & save, init *******************************************************/ 697/** load & save, init *******************************************************/
698
699ecb_inline void
700swap_sv (SV *a, SV *b)
701{
702 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
703 SV tmp;
704
705 /* swap sv_any */
706 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
707
708 /* swap sv_flags */
709 SvFLAGS (&tmp) = SvFLAGS (a);
710 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
711 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
712
713#if PERL_VERSION_ATLEAST (5,10,0)
714 /* perl 5.10 and later complicates this _quite_ a bit, but it also
715 * is much faster, so no quarrels here. alternatively, we could
716 * sv_upgrade to avoid this.
717 */
718 {
719 /* swap sv_u */
720 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
721
722 /* if SvANY points to the head, we need to adjust the pointers,
723 * as the pointer for a still points to b, and maybe vice versa.
724 */
725 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
726 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
727 svany_in_head_set |= 1 << SVt_NV;
728 #endif
729
730 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
731
732 if (svany_in_head (SvTYPE (a)))
733 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
734
735 if (svany_in_head (SvTYPE (b)))
736 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
737 }
738#endif
739}
740
741/* swap sv heads, at least logically */
742static void
743swap_svs_enter (pTHX_ Coro__State c)
744{
745 int i;
746
747 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
748 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
749}
750
751static void
752swap_svs_leave (pTHX_ Coro__State c)
753{
754 int i;
755
756 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
757 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
758}
759
760#define SWAP_SVS_ENTER(coro) \
761 if (ecb_expect_false ((coro)->swap_sv)) \
762 swap_svs_enter (aTHX_ (coro))
763
764#define SWAP_SVS_LEAVE(coro) \
765 if (ecb_expect_false ((coro)->swap_sv)) \
766 swap_svs_leave (aTHX_ (coro))
767
768static void
769on_enterleave_call (pTHX_ SV *cb);
524 770
525static void 771static void
526load_perl (pTHX_ Coro__State c) 772load_perl (pTHX_ Coro__State c)
527{ 773{
528 perl_slots *slot = c->slot; 774 perl_slots *slot = c->slot;
529 c->slot = 0; 775 c->slot = 0;
530 776
531 PL_mainstack = c->mainstack; 777 PL_mainstack = c->mainstack;
532 778
533 GvSV (PL_defgv) = slot->defsv; 779#if CORO_JIT
534 GvAV (PL_defgv) = slot->defav; 780 load_perl_slots (slot);
535 GvSV (PL_errgv) = slot->errsv; 781#else
536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
538
539 #define VAR(name,type) PL_ ## name = slot->name; 782 #define VARx(name,expr,type) expr = slot->name;
540 # include "state.h" 783 #include "state.h"
541 #undef VAR 784#endif
542 785
543 { 786 {
544 dSP; 787 dSP;
545 788
546 CV *cv; 789 CV *cv;
547 790
548 /* now do the ugly restore mess */ 791 /* now do the ugly restore mess */
549 while (expect_true (cv = (CV *)POPs)) 792 while (ecb_expect_true (cv = (CV *)POPs))
550 { 793 {
551 put_padlist (aTHX_ cv); /* mark this padlist as available */ 794 put_padlist (aTHX_ cv); /* mark this padlist as available */
552 CvDEPTH (cv) = PTR2IV (POPs); 795 CvDEPTH (cv) = PTR2IV (POPs);
553 CvPADLIST (cv) = (AV *)POPs; 796 CvPADLIST (cv) = (PADLIST *)POPs;
554 } 797 }
555 798
556 PUTBACK; 799 PUTBACK;
557 } 800 }
558 801
559 slf_frame = c->slf_frame; 802 slf_frame = c->slf_frame;
560 CORO_THROW = c->except; 803 CORO_THROW = c->except;
804
805 if (ecb_expect_false (enable_times))
806 {
807 if (ecb_expect_false (!times_valid))
808 coro_times_update ();
809
810 coro_times_sub (c);
811 }
812
813 if (ecb_expect_false (c->on_enter))
814 {
815 int i;
816
817 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
818 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
819 }
820
821 if (ecb_expect_false (c->on_enter_xs))
822 {
823 int i;
824
825 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
826 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
827 }
828
829 SWAP_SVS_ENTER (c);
561} 830}
562 831
563static void 832static void
564save_perl (pTHX_ Coro__State c) 833save_perl (pTHX_ Coro__State c)
565{ 834{
835 SWAP_SVS_LEAVE (c);
836
837 if (ecb_expect_false (c->on_leave_xs))
838 {
839 int i;
840
841 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
842 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
843 }
844
845 if (ecb_expect_false (c->on_leave))
846 {
847 int i;
848
849 for (i = AvFILLp (c->on_leave); i >= 0; --i)
850 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
851 }
852
853 times_valid = 0;
854
855 if (ecb_expect_false (enable_times))
856 {
857 coro_times_update (); times_valid = 1;
858 coro_times_add (c);
859 }
860
566 c->except = CORO_THROW; 861 c->except = CORO_THROW;
567 c->slf_frame = slf_frame; 862 c->slf_frame = slf_frame;
568 863
569 { 864 {
570 dSP; 865 dSP;
… …
579 874
580 XPUSHs (Nullsv); 875 XPUSHs (Nullsv);
581 /* this loop was inspired by pp_caller */ 876 /* this loop was inspired by pp_caller */
582 for (;;) 877 for (;;)
583 { 878 {
584 while (expect_true (cxix >= 0)) 879 while (ecb_expect_true (cxix >= 0))
585 { 880 {
586 PERL_CONTEXT *cx = &ccstk[cxix--]; 881 PERL_CONTEXT *cx = &ccstk[cxix--];
587 882
588 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 883 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
589 { 884 {
590 CV *cv = cx->blk_sub.cv; 885 CV *cv = cx->blk_sub.cv;
591 886
592 if (expect_true (CvDEPTH (cv))) 887 if (ecb_expect_true (CvDEPTH (cv)))
593 { 888 {
594 EXTEND (SP, 3); 889 EXTEND (SP, 3);
595 PUSHs ((SV *)CvPADLIST (cv)); 890 PUSHs ((SV *)CvPADLIST (cv));
596 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 891 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
597 PUSHs ((SV *)cv); 892 PUSHs ((SV *)cv);
… …
600 get_padlist (aTHX_ cv); 895 get_padlist (aTHX_ cv);
601 } 896 }
602 } 897 }
603 } 898 }
604 899
605 if (expect_true (top_si->si_type == PERLSI_MAIN)) 900 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
606 break; 901 break;
607 902
608 top_si = top_si->si_prev; 903 top_si = top_si->si_prev;
609 ccstk = top_si->si_cxstack; 904 ccstk = top_si->si_cxstack;
610 cxix = top_si->si_cxix; 905 cxix = top_si->si_cxix;
… …
612 907
613 PUTBACK; 908 PUTBACK;
614 } 909 }
615 910
616 /* allocate some space on the context stack for our purposes */ 911 /* allocate some space on the context stack for our purposes */
617 /* we manually unroll here, as usually 2 slots is enough */ 912 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
618 if (SLOT_COUNT >= 1) CXINC;
619 if (SLOT_COUNT >= 2) CXINC;
620 if (SLOT_COUNT >= 3) CXINC;
621 { 913 {
622 int i; 914 unsigned int i;
915
623 for (i = 3; i < SLOT_COUNT; ++i) 916 for (i = 0; i < SLOT_COUNT; ++i)
624 CXINC; 917 CXINC;
625 } 918
626 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 919 cxstack_ix -= SLOT_COUNT; /* undo allocation */
920 }
627 921
628 c->mainstack = PL_mainstack; 922 c->mainstack = PL_mainstack;
629 923
630 { 924 {
631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 925 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
632 926
633 slot->defav = GvAV (PL_defgv); 927#if CORO_JIT
634 slot->defsv = DEFSV; 928 save_perl_slots (slot);
635 slot->errsv = ERRSV; 929#else
636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
638
639 #define VAR(name,type) slot->name = PL_ ## name; 930 #define VARx(name,expr,type) slot->name = expr;
640 # include "state.h" 931 #include "state.h"
641 #undef VAR 932#endif
642 } 933 }
643} 934}
644 935
645/* 936/*
646 * allocate various perl stacks. This is almost an exact copy 937 * allocate various perl stacks. This is almost an exact copy
… …
652# define coro_init_stacks(thx) init_stacks () 943# define coro_init_stacks(thx) init_stacks ()
653#else 944#else
654static void 945static void
655coro_init_stacks (pTHX) 946coro_init_stacks (pTHX)
656{ 947{
657 PL_curstackinfo = new_stackinfo(32, 8); 948 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
658 PL_curstackinfo->si_type = PERLSI_MAIN; 949 PL_curstackinfo->si_type = PERLSI_MAIN;
659 PL_curstack = PL_curstackinfo->si_stack; 950 PL_curstack = PL_curstackinfo->si_stack;
660 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 951 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
661 952
662 PL_stack_base = AvARRAY(PL_curstack); 953 PL_stack_base = AvARRAY(PL_curstack);
… …
677#endif 968#endif
678 969
679 New(54,PL_scopestack,8,I32); 970 New(54,PL_scopestack,8,I32);
680 PL_scopestack_ix = 0; 971 PL_scopestack_ix = 0;
681 PL_scopestack_max = 8; 972 PL_scopestack_max = 8;
973#if HAS_SCOPESTACK_NAME
974 New(54,PL_scopestack_name,8,const char*);
975#endif
682 976
683 New(54,PL_savestack,24,ANY); 977 New(54,PL_savestack,24,ANY);
684 PL_savestack_ix = 0; 978 PL_savestack_ix = 0;
685 PL_savestack_max = 24; 979 PL_savestack_max = 24;
980#if PERL_VERSION_ATLEAST (5,24,0)
981 /* perl 5.24 moves SS_MAXPUSH optimisation from */
982 /* the header macros to PL_savestack_max */
983 PL_savestack_max -= SS_MAXPUSH;
984#endif
686 985
687#if !PERL_VERSION_ATLEAST (5,10,0) 986#if !PERL_VERSION_ATLEAST (5,10,0)
688 New(54,PL_retstack,4,OP*); 987 New(54,PL_retstack,4,OP*);
689 PL_retstack_ix = 0; 988 PL_retstack_ix = 0;
690 PL_retstack_max = 4; 989 PL_retstack_max = 4;
… …
714 } 1013 }
715 1014
716 Safefree (PL_tmps_stack); 1015 Safefree (PL_tmps_stack);
717 Safefree (PL_markstack); 1016 Safefree (PL_markstack);
718 Safefree (PL_scopestack); 1017 Safefree (PL_scopestack);
1018#if HAS_SCOPESTACK_NAME
1019 Safefree (PL_scopestack_name);
1020#endif
719 Safefree (PL_savestack); 1021 Safefree (PL_savestack);
720#if !PERL_VERSION_ATLEAST (5,10,0) 1022#if !PERL_VERSION_ATLEAST (5,10,0)
721 Safefree (PL_retstack); 1023 Safefree (PL_retstack);
722#endif 1024#endif
723} 1025}
… …
753 } 1055 }
754 1056
755 return rss; 1057 return rss;
756} 1058}
757 1059
758/** coroutine stack handling ************************************************/ 1060/** provide custom get/set/clear methods for %SIG elements ******************/
759
760static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
761static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
762static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
763 1061
764/* apparently < 5.8.8 */ 1062/* apparently < 5.8.8 */
765#ifndef MgPV_nolen_const 1063#ifndef MgPV_nolen_const
766#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1064#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
767 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1065 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
768 (const char*)(mg)->mg_ptr) 1066 (const char*)(mg)->mg_ptr)
769#endif 1067#endif
770 1068
1069/* this will be a patched copy of PL_vtbl_sigelem */
1070static MGVTBL coro_sigelem_vtbl;
1071
1072static int ecb_cold
1073coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
1074{
1075 char *key = SvPV_nolen ((SV *)name);
1076
1077 /* do what mg_copy normally does */
1078 sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
1079 assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
1080
1081 /* patch sigelem vtbl, but only for __WARN__ and __DIE__ */
1082 if (*key == '_'
1083 && (strEQ (key, "__DIE__")
1084 || strEQ (key, "__WARN__")))
1085 mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
1086
1087 return 1;
1088}
1089
1090/* perl does not have a %SIG vtbl, we provide one so we can override */
1091/* the magic vtbl for the __DIE__ and __WARN__ members */
1092static const MGVTBL coro_sig_vtbl = {
1093 0, 0, 0, 0, 0,
1094 coro_sig_copy
1095};
1096
771/* 1097/*
772 * This overrides the default magic get method of %SIG elements. 1098 * This overrides the default magic get method of %SIG elements.
773 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1099 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
774 * and instead of tryign to save and restore the hash elements, we just provide 1100 * and instead of trying to save and restore the hash elements (extremely slow),
775 * readback here. 1101 * we just provide our own readback here.
776 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
777 * not expecting this to actually change the hook. This is a potential problem
778 * when a schedule happens then, but we ignore this.
779 */ 1102 */
780static int 1103static int ecb_cold
781coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1104coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
782{ 1105{
783 const char *s = MgPV_nolen_const (mg); 1106 const char *s = MgPV_nolen_const (mg);
1107 /* the key must be either __DIE__ or __WARN__ here */
1108 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
784 1109
785 if (*s == '_') 1110 SV *ssv;
786 {
787 SV **svp = 0;
788 1111
789 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
790 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
791
792 if (svp) 1112 if (!*svp)
793 { 1113 ssv = &PL_sv_undef;
794 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1114 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
795 return 0; 1115 ssv = sv_2mortal (newRV_inc (*svp));
796 } 1116 else
797 } 1117 ssv = *svp;
798 1118
799 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1119 sv_setsv (sv, ssv);
1120 return 0;
800} 1121}
801 1122
802static int 1123static int ecb_cold
803coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1124coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
804{ 1125{
805 const char *s = MgPV_nolen_const (mg); 1126 const char *s = MgPV_nolen_const (mg);
1127 /* the key must be either __DIE__ or __WARN__ here */
1128 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
806 1129
807 if (*s == '_')
808 {
809 SV **svp = 0;
810
811 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
812 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
813
814 if (svp)
815 {
816 SV *old = *svp; 1130 SV *old = *svp;
817 *svp = 0; 1131 *svp = 0;
818 SvREFCNT_dec (old); 1132 SvREFCNT_dec (old);
819 return 0; 1133 return 0;
820 }
821 }
822
823 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
824} 1134}
825 1135
826static int 1136static int ecb_cold
827coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1137coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
828{ 1138{
829 const char *s = MgPV_nolen_const (mg); 1139 const char *s = MgPV_nolen_const (mg);
1140 /* the key must be either __DIE__ or __WARN__ here */
1141 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
830 1142
831 if (*s == '_')
832 {
833 SV **svp = 0;
834
835 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
836 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
837
838 if (svp)
839 {
840 SV *old = *svp; 1143 SV *old = *svp;
841 *svp = newSVsv (sv); 1144 *svp = SvOK (sv) ? newSVsv (sv) : 0;
842 SvREFCNT_dec (old); 1145 SvREFCNT_dec (old);
843 return 0; 1146 return 0;
844 }
845 }
846
847 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
848} 1147}
849 1148
850static void 1149static void
851prepare_nop (pTHX_ struct coro_transfer_args *ta) 1150prepare_nop (pTHX_ struct coro_transfer_args *ta)
852{ 1151{
… …
864slf_check_repeat (pTHX_ struct CoroSLF *frame) 1163slf_check_repeat (pTHX_ struct CoroSLF *frame)
865{ 1164{
866 return 1; 1165 return 1;
867} 1166}
868 1167
869static UNOP coro_setup_op; 1168/** coroutine stack handling ************************************************/
870 1169
871static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1170static UNOP init_perl_op;
1171
1172ecb_noinline static void /* noinline to keep it out of the transfer fast path */
872coro_setup (pTHX_ struct coro *coro) 1173init_perl (pTHX_ struct coro *coro)
873{ 1174{
874 /* 1175 /*
875 * emulate part of the perl startup here. 1176 * emulate part of the perl startup here.
876 */ 1177 */
877 coro_init_stacks (aTHX); 1178 coro_init_stacks (aTHX);
… …
884 PL_comppad_name_fill = 0; 1185 PL_comppad_name_fill = 0;
885 PL_comppad_name_floor = 0; 1186 PL_comppad_name_floor = 0;
886 PL_curpm = 0; 1187 PL_curpm = 0;
887 PL_curpad = 0; 1188 PL_curpad = 0;
888 PL_localizing = 0; 1189 PL_localizing = 0;
889 PL_dirty = 0;
890 PL_restartop = 0; 1190 PL_restartop = 0;
891#if PERL_VERSION_ATLEAST (5,10,0) 1191#if PERL_VERSION_ATLEAST (5,10,0)
892 PL_parser = 0; 1192 PL_parser = 0;
893#endif 1193#endif
894 PL_hints = 0; 1194 PL_hints = 0;
895 1195
896 /* recreate the die/warn hooks */ 1196 /* recreate the die/warn hooks */
897 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1197 PL_diehook = SvREFCNT_inc (rv_diehook);
898 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1198 PL_warnhook = SvREFCNT_inc (rv_warnhook);
899 1199
900 GvSV (PL_defgv) = newSV (0); 1200 GvSV (PL_defgv) = newSV (0);
901 GvAV (PL_defgv) = coro->args; coro->args = 0; 1201 GvAV (PL_defgv) = coro->args; coro->args = 0;
902 GvSV (PL_errgv) = newSV (0); 1202 GvSV (PL_errgv) = newSV (0);
903 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1203 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
904 GvHV (PL_hintgv) = 0; 1204 GvHV (PL_hintgv) = newHV ();
1205#if PERL_VERSION_ATLEAST (5,10,0)
1206 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1207#endif
905 PL_rs = newSVsv (GvSV (irsgv)); 1208 PL_rs = newSVsv (GvSV (irsgv));
906 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1209 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
907 1210
908 { 1211 {
909 dSP; 1212 dSP;
… …
924 /* this newly created coroutine might be run on an existing cctx which most 1227 /* this newly created coroutine might be run on an existing cctx which most
925 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1228 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
926 */ 1229 */
927 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1230 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
928 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1231 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1232 slf_frame.destroy = 0;
929 1233
930 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1234 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
931 coro_setup_op.op_next = PL_op; 1235 init_perl_op.op_next = PL_op;
932 coro_setup_op.op_type = OP_ENTERSUB; 1236 init_perl_op.op_type = OP_ENTERSUB;
933 coro_setup_op.op_ppaddr = pp_slf; 1237 init_perl_op.op_ppaddr = pp_slf;
934 /* no flags etc. required, as an init function won't be called */ 1238 /* no flags etc. required, as an init function won't be called */
935 1239
936 PL_op = (OP *)&coro_setup_op; 1240 PL_op = (OP *)&init_perl_op;
937 1241
938 /* copy throw, in case it was set before coro_setup */ 1242 /* copy throw, in case it was set before init_perl */
939 CORO_THROW = coro->except; 1243 CORO_THROW = coro->except;
940}
941 1244
1245 SWAP_SVS_ENTER (coro);
1246
1247 if (ecb_expect_false (enable_times))
1248 {
1249 coro_times_update ();
1250 coro_times_sub (coro);
1251 }
1252}
1253
942static void 1254static void
943coro_destruct (pTHX_ struct coro *coro) 1255coro_unwind_stacks (pTHX)
944{ 1256{
945 if (!IN_DESTRUCT) 1257 if (!IN_DESTRUCT)
946 { 1258 {
947 /* restore all saved variables and stuff */ 1259 /* restore all saved variables and stuff */
948 LEAVE_SCOPE (0); 1260 LEAVE_SCOPE (0);
… …
956 POPSTACK_TO (PL_mainstack); 1268 POPSTACK_TO (PL_mainstack);
957 1269
958 /* unwind main stack */ 1270 /* unwind main stack */
959 dounwind (-1); 1271 dounwind (-1);
960 } 1272 }
1273}
961 1274
962 SvREFCNT_dec (GvSV (PL_defgv)); 1275static void
963 SvREFCNT_dec (GvAV (PL_defgv)); 1276destroy_perl (pTHX_ struct coro *coro)
964 SvREFCNT_dec (GvSV (PL_errgv)); 1277{
965 SvREFCNT_dec (PL_defoutgv); 1278 SV *svf [9];
966 SvREFCNT_dec (PL_rs);
967 SvREFCNT_dec (GvSV (irsgv));
968 SvREFCNT_dec (GvHV (PL_hintgv));
969 1279
970 SvREFCNT_dec (PL_diehook);
971 SvREFCNT_dec (PL_warnhook);
972 1280 {
1281 SV *old_current = SvRV (coro_current);
1282 struct coro *current = SvSTATE (old_current);
1283
1284 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1285
1286 save_perl (aTHX_ current);
1287
1288 /* this will cause transfer_check to croak on block*/
1289 SvRV_set (coro_current, (SV *)coro->hv);
1290
1291 load_perl (aTHX_ coro);
1292
1293 /* restore swapped sv's */
1294 SWAP_SVS_LEAVE (coro);
1295
1296 coro_unwind_stacks (aTHX);
1297
1298 coro_destruct_stacks (aTHX);
1299
1300 /* now save some sv's to be free'd later */
1301 svf [0] = GvSV (PL_defgv);
1302 svf [1] = (SV *)GvAV (PL_defgv);
1303 svf [2] = GvSV (PL_errgv);
1304 svf [3] = (SV *)PL_defoutgv;
1305 svf [4] = PL_rs;
1306 svf [5] = GvSV (irsgv);
1307 svf [6] = (SV *)GvHV (PL_hintgv);
1308 svf [7] = PL_diehook;
1309 svf [8] = PL_warnhook;
1310 assert (9 == sizeof (svf) / sizeof (*svf));
1311
1312 SvRV_set (coro_current, old_current);
1313
1314 load_perl (aTHX_ current);
1315 }
1316
1317 {
1318 unsigned int i;
1319
1320 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1321 SvREFCNT_dec (svf [i]);
1322
973 SvREFCNT_dec (coro->saved_deffh); 1323 SvREFCNT_dec (coro->saved_deffh);
974 SvREFCNT_dec (coro->rouse_cb); 1324 SvREFCNT_dec (coro->rouse_cb);
975 SvREFCNT_dec (coro->invoke_cb); 1325 SvREFCNT_dec (coro->invoke_cb);
976 SvREFCNT_dec (coro->invoke_av); 1326 SvREFCNT_dec (coro->invoke_av);
977 1327 SvREFCNT_dec (coro->on_enter_xs);
978 coro_destruct_stacks (aTHX); 1328 SvREFCNT_dec (coro->on_leave_xs);
1329 }
979} 1330}
980 1331
981INLINE void 1332ecb_inline void
982free_coro_mortal (pTHX) 1333free_coro_mortal (pTHX)
983{ 1334{
984 if (expect_true (coro_mortal)) 1335 if (ecb_expect_true (coro_mortal))
985 { 1336 {
986 SvREFCNT_dec (coro_mortal); 1337 SvREFCNT_dec ((SV *)coro_mortal);
987 coro_mortal = 0; 1338 coro_mortal = 0;
988 } 1339 }
989} 1340}
990 1341
991static int 1342static int
… …
1045 1396
1046 if (PL_curcop != &PL_compiling) 1397 if (PL_curcop != &PL_compiling)
1047 { 1398 {
1048 SV **cb; 1399 SV **cb;
1049 1400
1050 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB) 1401 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
1051 { 1402 {
1052 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1403 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1053 1404
1054 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1405 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1055 { 1406 {
… …
1065 SAVETMPS; 1416 SAVETMPS;
1066 EXTEND (SP, 3); 1417 EXTEND (SP, 3);
1067 PUSHMARK (SP); 1418 PUSHMARK (SP);
1068 PUSHs (&PL_sv_yes); 1419 PUSHs (&PL_sv_yes);
1069 PUSHs (fullname); 1420 PUSHs (fullname);
1070 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1421 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc (SUB_ARGARRAY)) : &PL_sv_undef);
1071 PUTBACK; 1422 PUTBACK;
1072 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1423 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1073 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1424 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1074 SPAGAIN; 1425 SPAGAIN;
1075 FREETMPS; 1426 FREETMPS;
… …
1124 1475
1125 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1476 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1126} 1477}
1127 1478
1128/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1479/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1129static void NOINLINE 1480static void ecb_noinline
1130cctx_prepare (pTHX) 1481cctx_prepare (pTHX)
1131{ 1482{
1132 PL_top_env = &PL_start_env; 1483 PL_top_env = &PL_start_env;
1133 1484
1134 if (cctx_current->flags & CC_TRACE) 1485 if (cctx_current->flags & CC_TRACE)
… …
1145 slf_frame.prepare = slf_prepare_set_stacklevel; 1496 slf_frame.prepare = slf_prepare_set_stacklevel;
1146 slf_frame.check = slf_check_set_stacklevel; 1497 slf_frame.check = slf_check_set_stacklevel;
1147} 1498}
1148 1499
1149/* the tail of transfer: execute stuff we can only do after a transfer */ 1500/* the tail of transfer: execute stuff we can only do after a transfer */
1150INLINE void 1501ecb_inline void
1151transfer_tail (pTHX) 1502transfer_tail (pTHX)
1152{ 1503{
1153 free_coro_mortal (aTHX); 1504 free_coro_mortal (aTHX);
1505}
1506
1507/* try to exit the same way perl's main function would do */
1508/* we do not bother resetting the environment or other things *7
1509/* that are not, uhm, essential */
1510/* this obviously also doesn't work when perl is embedded */
1511static void ecb_noinline ecb_cold
1512perlish_exit (pTHX)
1513{
1514 int exitstatus = perl_destruct (PL_curinterp);
1515 perl_free (PL_curinterp);
1516 exit (exitstatus);
1154} 1517}
1155 1518
1156/* 1519/*
1157 * this is a _very_ stripped down perl interpreter ;) 1520 * this is a _very_ stripped down perl interpreter ;)
1158 */ 1521 */
… …
1180 /* somebody or something will hit me for both perl_run and PL_restartop */ 1543 /* somebody or something will hit me for both perl_run and PL_restartop */
1181 PL_restartop = PL_op; 1544 PL_restartop = PL_op;
1182 perl_run (PL_curinterp); 1545 perl_run (PL_curinterp);
1183 /* 1546 /*
1184 * Unfortunately, there is no way to get at the return values of the 1547 * Unfortunately, there is no way to get at the return values of the
1185 * coro body here, as perl_run destroys these 1548 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1549 * runtime errors here, as this is just a random interpreter, not a thread.
1186 */ 1550 */
1551
1552 /*
1553 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1554 * requires PL_scopestack_ix, so do it here if required.
1555 */
1556 if (!PL_scopestack_ix)
1557 ENTER;
1187 1558
1188 /* 1559 /*
1189 * If perl-run returns we assume exit() was being called or the coro 1560 * If perl-run returns we assume exit() was being called or the coro
1190 * fell off the end, which seems to be the only valid (non-bug) 1561 * fell off the end, which seems to be the only valid (non-bug)
1191 * reason for perl_run to return. We try to exit by jumping to the 1562 * reason for perl_run to return. We try to mimic whatever perl is normally
1192 * bootstrap-time "top" top_env, as we cannot restore the "main" 1563 * doing in that case. YMMV.
1193 * coroutine as Coro has no such concept.
1194 * This actually isn't valid with the pthread backend, but OSes requiring
1195 * that backend are too broken to do it in a standards-compliant way.
1196 */ 1564 */
1197 PL_top_env = main_top_env; 1565 perlish_exit (aTHX);
1198 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1199 } 1566 }
1200} 1567}
1201 1568
1202static coro_cctx * 1569static coro_cctx *
1203cctx_new () 1570cctx_new (void)
1204{ 1571{
1205 coro_cctx *cctx; 1572 coro_cctx *cctx;
1206 1573
1207 ++cctx_count; 1574 ++cctx_count;
1208 New (0, cctx, 1, coro_cctx); 1575 New (0, cctx, 1, coro_cctx);
… …
1214 return cctx; 1581 return cctx;
1215} 1582}
1216 1583
1217/* create a new cctx only suitable as source */ 1584/* create a new cctx only suitable as source */
1218static coro_cctx * 1585static coro_cctx *
1219cctx_new_empty () 1586cctx_new_empty (void)
1220{ 1587{
1221 coro_cctx *cctx = cctx_new (); 1588 coro_cctx *cctx = cctx_new ();
1222 1589
1223 cctx->sptr = 0; 1590 cctx->stack.sptr = 0;
1224 coro_create (&cctx->cctx, 0, 0, 0, 0); 1591 coro_create (&cctx->cctx, 0, 0, 0, 0);
1225 1592
1226 return cctx; 1593 return cctx;
1227} 1594}
1228 1595
1229/* create a new cctx suitable as destination/running a perl interpreter */ 1596/* create a new cctx suitable as destination/running a perl interpreter */
1230static coro_cctx * 1597static coro_cctx *
1231cctx_new_run () 1598cctx_new_run (void)
1232{ 1599{
1233 coro_cctx *cctx = cctx_new (); 1600 coro_cctx *cctx = cctx_new ();
1234 void *stack_start;
1235 size_t stack_size;
1236 1601
1237#if HAVE_MMAP 1602 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1238 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1239 /* mmap supposedly does allocate-on-write for us */
1240 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1241
1242 if (cctx->sptr != (void *)-1)
1243 {
1244 #if CORO_STACKGUARD
1245 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1246 #endif
1247 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1248 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1249 cctx->flags |= CC_MAPPED;
1250 } 1603 {
1251 else
1252#endif
1253 {
1254 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1255 New (0, cctx->sptr, cctx_stacksize, long);
1256
1257 if (!cctx->sptr)
1258 {
1259 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1604 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1260 _exit (EXIT_FAILURE); 1605 _exit (EXIT_FAILURE);
1261 }
1262
1263 stack_start = cctx->sptr;
1264 stack_size = cctx->ssize;
1265 } 1606 }
1266 1607
1267 #if CORO_USE_VALGRIND
1268 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1269 #endif
1270
1271 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1608 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1272 1609
1273 return cctx; 1610 return cctx;
1274} 1611}
1275 1612
1276static void 1613static void
1277cctx_destroy (coro_cctx *cctx) 1614cctx_destroy (coro_cctx *cctx)
1278{ 1615{
1279 if (!cctx) 1616 if (!cctx)
1280 return; 1617 return;
1281 1618
1282 assert (cctx != cctx_current);//D temporary 1619 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1283 1620
1284 --cctx_count; 1621 --cctx_count;
1285 coro_destroy (&cctx->cctx); 1622 coro_destroy (&cctx->cctx);
1286 1623
1287 /* coro_transfer creates new, empty cctx's */ 1624 coro_stack_free (&cctx->stack);
1288 if (cctx->sptr)
1289 {
1290 #if CORO_USE_VALGRIND
1291 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1292 #endif
1293
1294#if HAVE_MMAP
1295 if (cctx->flags & CC_MAPPED)
1296 munmap (cctx->sptr, cctx->ssize);
1297 else
1298#endif
1299 Safefree (cctx->sptr);
1300 }
1301 1625
1302 Safefree (cctx); 1626 Safefree (cctx);
1303} 1627}
1304 1628
1305/* wether this cctx should be destructed */ 1629/* wether this cctx should be destructed */
1306#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1630#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1307 1631
1308static coro_cctx * 1632static coro_cctx *
1309cctx_get (pTHX) 1633cctx_get (pTHX)
1310{ 1634{
1311 while (expect_true (cctx_first)) 1635 while (ecb_expect_true (cctx_first))
1312 { 1636 {
1313 coro_cctx *cctx = cctx_first; 1637 coro_cctx *cctx = cctx_first;
1314 cctx_first = cctx->next; 1638 cctx_first = cctx->next;
1315 --cctx_idle; 1639 --cctx_idle;
1316 1640
1317 if (expect_true (!CCTX_EXPIRED (cctx))) 1641 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1318 return cctx; 1642 return cctx;
1319 1643
1320 cctx_destroy (cctx); 1644 cctx_destroy (cctx);
1321 } 1645 }
1322 1646
… …
1324} 1648}
1325 1649
1326static void 1650static void
1327cctx_put (coro_cctx *cctx) 1651cctx_put (coro_cctx *cctx)
1328{ 1652{
1329 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1653 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1330 1654
1331 /* free another cctx if overlimit */ 1655 /* free another cctx if overlimit */
1332 if (expect_false (cctx_idle >= cctx_max_idle)) 1656 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1333 { 1657 {
1334 coro_cctx *first = cctx_first; 1658 coro_cctx *first = cctx_first;
1335 cctx_first = first->next; 1659 cctx_first = first->next;
1336 --cctx_idle; 1660 --cctx_idle;
1337 1661
… …
1348static void 1672static void
1349transfer_check (pTHX_ struct coro *prev, struct coro *next) 1673transfer_check (pTHX_ struct coro *prev, struct coro *next)
1350{ 1674{
1351 /* TODO: throwing up here is considered harmful */ 1675 /* TODO: throwing up here is considered harmful */
1352 1676
1353 if (expect_true (prev != next)) 1677 if (ecb_expect_true (prev != next))
1354 { 1678 {
1355 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1679 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1356 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,"); 1680 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1357 1681
1358 if (expect_false (next->flags & CF_RUNNING)) 1682 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1359 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1360
1361 if (expect_false (next->flags & CF_DESTROYED))
1362 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1683 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1363 1684
1364#if !PERL_VERSION_ATLEAST (5,10,0) 1685#if !PERL_VERSION_ATLEAST (5,10,0)
1365 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1686 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1366 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1687 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1367#endif 1688#endif
1368 } 1689 }
1369} 1690}
1370 1691
1371/* always use the TRANSFER macro */ 1692/* always use the TRANSFER macro */
1372static void NOINLINE /* noinline so we have a fixed stackframe */ 1693static void ecb_noinline /* noinline so we have a fixed stackframe */
1373transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1694transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1374{ 1695{
1375 dSTACKLEVEL; 1696 dSTACKLEVEL;
1376 1697
1377 /* sometimes transfer is only called to set idle_sp */ 1698 /* sometimes transfer is only called to set idle_sp */
1378 if (expect_false (!prev)) 1699 if (ecb_expect_false (!prev))
1379 { 1700 {
1380 cctx_current->idle_sp = STACKLEVEL; 1701 cctx_current->idle_sp = STACKLEVEL;
1381 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1702 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1382 } 1703 }
1383 else if (expect_true (prev != next)) 1704 else if (ecb_expect_true (prev != next))
1384 { 1705 {
1385 coro_cctx *cctx_prev; 1706 coro_cctx *cctx_prev;
1386 1707
1387 if (expect_false (prev->flags & CF_NEW)) 1708 if (ecb_expect_false (prev->flags & CF_NEW))
1388 { 1709 {
1389 /* create a new empty/source context */ 1710 /* create a new empty/source context */
1390 prev->flags &= ~CF_NEW; 1711 prev->flags &= ~CF_NEW;
1391 prev->flags |= CF_RUNNING; 1712 prev->flags |= CF_RUNNING;
1392 } 1713 }
… …
1395 next->flags |= CF_RUNNING; 1716 next->flags |= CF_RUNNING;
1396 1717
1397 /* first get rid of the old state */ 1718 /* first get rid of the old state */
1398 save_perl (aTHX_ prev); 1719 save_perl (aTHX_ prev);
1399 1720
1400 if (expect_false (next->flags & CF_NEW)) 1721 if (ecb_expect_false (next->flags & CF_NEW))
1401 { 1722 {
1402 /* need to start coroutine */ 1723 /* need to start coroutine */
1403 next->flags &= ~CF_NEW; 1724 next->flags &= ~CF_NEW;
1404 /* setup coroutine call */ 1725 /* setup coroutine call */
1405 coro_setup (aTHX_ next); 1726 init_perl (aTHX_ next);
1406 } 1727 }
1407 else 1728 else
1408 load_perl (aTHX_ next); 1729 load_perl (aTHX_ next);
1409 1730
1410 assert (!prev->cctx);//D temporary
1411
1412 /* possibly untie and reuse the cctx */ 1731 /* possibly untie and reuse the cctx */
1413 if (expect_true ( 1732 if (ecb_expect_true (
1414 cctx_current->idle_sp == STACKLEVEL 1733 cctx_current->idle_sp == STACKLEVEL
1415 && !(cctx_current->flags & CC_TRACE) 1734 && !(cctx_current->flags & CC_TRACE)
1416 && !force_cctx 1735 && !force_cctx
1417 )) 1736 ))
1418 { 1737 {
1419 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1738 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1420 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); 1739 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1421 1740
1422 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ 1741 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1423 /* without this the next cctx_get might destroy the running cctx while still in use */ 1742 /* without this the next cctx_get might destroy the running cctx while still in use */
1424 if (expect_false (CCTX_EXPIRED (cctx_current))) 1743 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1425 if (expect_true (!next->cctx)) 1744 if (ecb_expect_true (!next->cctx))
1426 next->cctx = cctx_get (aTHX); 1745 next->cctx = cctx_get (aTHX);
1427 1746
1428 cctx_put (cctx_current); 1747 cctx_put (cctx_current);
1429 } 1748 }
1430 else 1749 else
1431 prev->cctx = cctx_current; 1750 prev->cctx = cctx_current;
1432 1751
1433 ++next->usecount; 1752 ++next->usecount;
1434 1753
1435 cctx_prev = cctx_current; 1754 cctx_prev = cctx_current;
1436 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); 1755 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1437 1756
1438 next->cctx = 0; 1757 next->cctx = 0;
1439 1758
1440 if (expect_false (cctx_prev != cctx_current)) 1759 if (ecb_expect_false (cctx_prev != cctx_current))
1441 { 1760 {
1442 cctx_prev->top_env = PL_top_env; 1761 cctx_prev->top_env = PL_top_env;
1443 PL_top_env = cctx_current->top_env; 1762 PL_top_env = cctx_current->top_env;
1444 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); 1763 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1445 } 1764 }
… …
1451#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1770#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1452#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1771#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1453 1772
1454/** high level stuff ********************************************************/ 1773/** high level stuff ********************************************************/
1455 1774
1775/* this function is actually Coro, not Coro::State, but we call it from here */
1776/* because it is convenient - but it hasn't been declared yet for that reason */
1456static int 1777static void
1778coro_call_on_destroy (pTHX_ struct coro *coro);
1779
1780static void
1457coro_state_destroy (pTHX_ struct coro *coro) 1781coro_state_destroy (pTHX_ struct coro *coro)
1458{ 1782{
1459 if (coro->flags & CF_DESTROYED) 1783 if (coro->flags & CF_ZOMBIE)
1460 return 0; 1784 return;
1461 1785
1462 if (coro->on_destroy)
1463 coro->on_destroy (aTHX_ coro); 1786 slf_destroy (aTHX_ coro);
1464 1787
1465 coro->flags |= CF_DESTROYED; 1788 coro->flags |= CF_ZOMBIE;
1466 1789
1467 if (coro->flags & CF_READY) 1790 if (coro->flags & CF_READY)
1468 { 1791 {
1469 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1792 /* reduce nready, as destroying a ready coro effectively unreadies it */
1470 /* alternative: look through all ready queues and remove the coro */ 1793 /* alternative: look through all ready queues and remove the coro */
1471 --coro_nready; 1794 --coro_nready;
1472 } 1795 }
1473 else 1796 else
1474 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1797 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1475 1798
1476 if (coro->mainstack && coro->mainstack != main_mainstack) 1799 if (coro->next) coro->next->prev = coro->prev;
1477 { 1800 if (coro->prev) coro->prev->next = coro->next;
1478 struct coro temp; 1801 if (coro == coro_first) coro_first = coro->next;
1479 1802
1480 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1803 if (coro->mainstack
1481 1804 && coro->mainstack != main_mainstack
1482 save_perl (aTHX_ &temp); 1805 && coro->slot
1806 && !PL_dirty)
1483 load_perl (aTHX_ coro); 1807 destroy_perl (aTHX_ coro);
1484
1485 coro_destruct (aTHX_ coro);
1486
1487 load_perl (aTHX_ &temp);
1488
1489 coro->slot = 0;
1490 }
1491 1808
1492 cctx_destroy (coro->cctx); 1809 cctx_destroy (coro->cctx);
1493 SvREFCNT_dec (coro->startcv); 1810 SvREFCNT_dec (coro->startcv);
1494 SvREFCNT_dec (coro->args); 1811 SvREFCNT_dec (coro->args);
1812 SvREFCNT_dec (coro->swap_sv);
1495 SvREFCNT_dec (CORO_THROW); 1813 SvREFCNT_dec (CORO_THROW);
1496 1814
1497 if (coro->next) coro->next->prev = coro->prev; 1815 coro_call_on_destroy (aTHX_ coro);
1498 if (coro->prev) coro->prev->next = coro->next;
1499 if (coro == coro_first) coro_first = coro->next;
1500 1816
1501 return 1; 1817 /* more destruction mayhem in coro_state_free */
1502} 1818}
1503 1819
1504static int 1820static int
1505coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1821coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1506{ 1822{
1507 struct coro *coro = (struct coro *)mg->mg_ptr; 1823 struct coro *coro = (struct coro *)mg->mg_ptr;
1508 mg->mg_ptr = 0; 1824 mg->mg_ptr = 0;
1509 1825
1510 coro->hv = 0;
1511
1512 if (--coro->refcnt < 0)
1513 {
1514 coro_state_destroy (aTHX_ coro); 1826 coro_state_destroy (aTHX_ coro);
1827 SvREFCNT_dec (coro->on_destroy);
1828 SvREFCNT_dec (coro->status);
1829
1515 Safefree (coro); 1830 Safefree (coro);
1516 }
1517 1831
1518 return 0; 1832 return 0;
1519} 1833}
1520 1834
1521static int 1835static int ecb_cold
1522coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1836coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1523{ 1837{
1524 struct coro *coro = (struct coro *)mg->mg_ptr; 1838 /* called when perl clones the current process the slow way (windows process emulation) */
1525 1839 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1526 ++coro->refcnt; 1840 mg->mg_ptr = 0;
1841 mg->mg_virtual = 0;
1527 1842
1528 return 0; 1843 return 0;
1529} 1844}
1530 1845
1531static MGVTBL coro_state_vtbl = { 1846static MGVTBL coro_state_vtbl = {
… …
1554 1869
1555 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1870 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1556 TRANSFER (ta, 1); 1871 TRANSFER (ta, 1);
1557} 1872}
1558 1873
1559/*****************************************************************************/
1560/* gensub: simple closure generation utility */
1561
1562#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1563
1564/* create a closure from XS, returns a code reference */
1565/* the arg can be accessed via GENSUB_ARG from the callback */
1566/* the callback must use dXSARGS/XSRETURN */
1567static SV *
1568gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1569{
1570 CV *cv = (CV *)newSV (0);
1571
1572 sv_upgrade ((SV *)cv, SVt_PVCV);
1573
1574 CvANON_on (cv);
1575 CvISXSUB_on (cv);
1576 CvXSUB (cv) = xsub;
1577 GENSUB_ARG = arg;
1578
1579 return newRV_noinc ((SV *)cv);
1580}
1581
1582/** Coro ********************************************************************/ 1874/** Coro ********************************************************************/
1583 1875
1584INLINE void 1876ecb_inline void
1585coro_enq (pTHX_ struct coro *coro) 1877coro_enq (pTHX_ struct coro *coro)
1586{ 1878{
1587 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1879 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1588}
1589 1880
1590INLINE SV * 1881 SvREFCNT_inc_NN (coro->hv);
1882
1883 coro->next_ready = 0;
1884 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1885 ready [1] = coro;
1886}
1887
1888ecb_inline struct coro *
1591coro_deq (pTHX) 1889coro_deq (pTHX)
1592{ 1890{
1593 int prio; 1891 int prio;
1594 1892
1595 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1893 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1596 if (AvFILLp (coro_ready [prio]) >= 0) 1894 {
1597 return av_shift (coro_ready [prio]); 1895 struct coro **ready = coro_ready [prio];
1896
1897 if (ready [0])
1898 {
1899 struct coro *coro = ready [0];
1900 ready [0] = coro->next_ready;
1901 return coro;
1902 }
1903 }
1598 1904
1599 return 0; 1905 return 0;
1906}
1907
1908static void
1909invoke_sv_ready_hook_helper (void)
1910{
1911 dTHX;
1912 dSP;
1913
1914 ENTER;
1915 SAVETMPS;
1916
1917 PUSHMARK (SP);
1918 PUTBACK;
1919 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1920
1921 FREETMPS;
1922 LEAVE;
1600} 1923}
1601 1924
1602static int 1925static int
1603api_ready (pTHX_ SV *coro_sv) 1926api_ready (pTHX_ SV *coro_sv)
1604{ 1927{
1605 struct coro *coro;
1606 SV *sv_hook;
1607 void (*xs_hook)(void);
1608
1609 coro = SvSTATE (coro_sv); 1928 struct coro *coro = SvSTATE (coro_sv);
1610 1929
1611 if (coro->flags & CF_READY) 1930 if (coro->flags & CF_READY)
1612 return 0; 1931 return 0;
1613 1932
1614 coro->flags |= CF_READY; 1933 coro->flags |= CF_READY;
1615 1934
1616 sv_hook = coro_nready ? 0 : coro_readyhook;
1617 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1618
1619 coro_enq (aTHX_ coro); 1935 coro_enq (aTHX_ coro);
1620 ++coro_nready;
1621 1936
1622 if (sv_hook) 1937 if (!coro_nready++)
1623 { 1938 if (coroapi.readyhook)
1624 dSP; 1939 coroapi.readyhook ();
1625
1626 ENTER;
1627 SAVETMPS;
1628
1629 PUSHMARK (SP);
1630 PUTBACK;
1631 call_sv (sv_hook, G_VOID | G_DISCARD);
1632
1633 FREETMPS;
1634 LEAVE;
1635 }
1636
1637 if (xs_hook)
1638 xs_hook ();
1639 1940
1640 return 1; 1941 return 1;
1641} 1942}
1642 1943
1643static int 1944static int
… …
1645{ 1946{
1646 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1947 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1647} 1948}
1648 1949
1649/* expects to own a reference to next->hv */ 1950/* expects to own a reference to next->hv */
1650INLINE void 1951ecb_inline void
1651prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) 1952prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1652{ 1953{
1653 SV *prev_sv = SvRV (coro_current); 1954 SV *prev_sv = SvRV (coro_current);
1654 1955
1655 ta->prev = SvSTATE_hv (prev_sv); 1956 ta->prev = SvSTATE_hv (prev_sv);
… …
1666static void 1967static void
1667prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1968prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1668{ 1969{
1669 for (;;) 1970 for (;;)
1670 { 1971 {
1671 SV *next_sv = coro_deq (aTHX); 1972 struct coro *next = coro_deq (aTHX);
1672 1973
1673 if (expect_true (next_sv)) 1974 if (ecb_expect_true (next))
1674 { 1975 {
1675 struct coro *next = SvSTATE_hv (next_sv);
1676
1677 /* cannot transfer to destroyed coros, skip and look for next */ 1976 /* cannot transfer to destroyed coros, skip and look for next */
1678 if (expect_false (next->flags & CF_DESTROYED)) 1977 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1679 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */ 1978 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1680 else 1979 else
1681 { 1980 {
1682 next->flags &= ~CF_READY; 1981 next->flags &= ~CF_READY;
1683 --coro_nready; 1982 --coro_nready;
1684 1983
… …
1690 { 1989 {
1691 /* nothing to schedule: call the idle handler */ 1990 /* nothing to schedule: call the idle handler */
1692 if (SvROK (sv_idle) 1991 if (SvROK (sv_idle)
1693 && SvOBJECT (SvRV (sv_idle))) 1992 && SvOBJECT (SvRV (sv_idle)))
1694 { 1993 {
1994 if (SvRV (sv_idle) == SvRV (coro_current))
1995 {
1996 require_pv ("Carp");
1997
1998 {
1999 dSP;
2000
2001 ENTER;
2002 SAVETMPS;
2003
2004 PUSHMARK (SP);
2005 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2006 PUTBACK;
2007 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2008
2009 FREETMPS;
2010 LEAVE;
2011 }
2012 }
2013
1695 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ 2014 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1696 api_ready (aTHX_ SvRV (sv_idle)); 2015 api_ready (aTHX_ SvRV (sv_idle));
1697 --coro_nready; 2016 --coro_nready;
1698 } 2017 }
1699 else 2018 else
1700 { 2019 {
2020 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1701 dSP; 2021 dSP;
1702 2022
1703 ENTER; 2023 ENTER;
1704 SAVETMPS; 2024 SAVETMPS;
1705 2025
… …
1712 } 2032 }
1713 } 2033 }
1714 } 2034 }
1715} 2035}
1716 2036
1717INLINE void 2037ecb_inline void
1718prepare_cede (pTHX_ struct coro_transfer_args *ta) 2038prepare_cede (pTHX_ struct coro_transfer_args *ta)
1719{ 2039{
1720 api_ready (aTHX_ coro_current); 2040 api_ready (aTHX_ coro_current);
1721 prepare_schedule (aTHX_ ta); 2041 prepare_schedule (aTHX_ ta);
1722} 2042}
1723 2043
1724INLINE void 2044ecb_inline void
1725prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2045prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1726{ 2046{
1727 SV *prev = SvRV (coro_current); 2047 SV *prev = SvRV (coro_current);
1728 2048
1729 if (coro_nready) 2049 if (coro_nready)
… …
1759{ 2079{
1760 struct coro_transfer_args ta; 2080 struct coro_transfer_args ta;
1761 2081
1762 prepare_cede (aTHX_ &ta); 2082 prepare_cede (aTHX_ &ta);
1763 2083
1764 if (expect_true (ta.prev != ta.next)) 2084 if (ecb_expect_true (ta.prev != ta.next))
1765 { 2085 {
1766 TRANSFER (ta, 1); 2086 TRANSFER (ta, 1);
1767 return 1; 2087 return 1;
1768 } 2088 }
1769 else 2089 else
… …
1812 coro->slot->runops = RUNOPS_DEFAULT; 2132 coro->slot->runops = RUNOPS_DEFAULT;
1813 } 2133 }
1814} 2134}
1815 2135
1816static void 2136static void
2137coro_push_av (pTHX_ AV *av, I32 gimme_v)
2138{
2139 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2140 {
2141 dSP;
2142
2143 if (gimme_v == G_SCALAR)
2144 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2145 else
2146 {
2147 int i;
2148 EXTEND (SP, AvFILLp (av) + 1);
2149
2150 for (i = 0; i <= AvFILLp (av); ++i)
2151 PUSHs (AvARRAY (av)[i]);
2152 }
2153
2154 PUTBACK;
2155 }
2156}
2157
2158static void
2159coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2160{
2161 if (!coro->on_destroy)
2162 coro->on_destroy = newAV ();
2163
2164 av_push (coro->on_destroy, cb);
2165}
2166
2167static void
2168slf_destroy_join (pTHX_ struct CoroSLF *frame)
2169{
2170 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2171}
2172
2173static int
2174slf_check_join (pTHX_ struct CoroSLF *frame)
2175{
2176 struct coro *coro = (struct coro *)frame->data;
2177
2178 if (!coro->status)
2179 return 1;
2180
2181 frame->destroy = 0;
2182
2183 coro_push_av (aTHX_ coro->status, GIMME_V);
2184
2185 SvREFCNT_dec ((SV *)coro->hv);
2186
2187 return 0;
2188}
2189
2190static void
2191slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2192{
2193 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2194
2195 if (items > 1)
2196 croak ("join called with too many arguments");
2197
2198 if (coro->status)
2199 frame->prepare = prepare_nop;
2200 else
2201 {
2202 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2203 frame->prepare = prepare_schedule;
2204 }
2205
2206 frame->check = slf_check_join;
2207 frame->destroy = slf_destroy_join;
2208 frame->data = (void *)coro;
2209 SvREFCNT_inc (coro->hv);
2210}
2211
2212static void
1817coro_call_on_destroy (pTHX_ struct coro *coro) 2213coro_call_on_destroy (pTHX_ struct coro *coro)
1818{ 2214{
1819 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); 2215 AV *od = coro->on_destroy;
1820 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1821 2216
1822 if (on_destroyp) 2217 if (!od)
1823 { 2218 return;
1824 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1825 2219
2220 coro->on_destroy = 0;
2221 sv_2mortal ((SV *)od);
2222
1826 while (AvFILLp (on_destroy) >= 0) 2223 while (AvFILLp (od) >= 0)
2224 {
2225 SV *cb = sv_2mortal (av_pop (od));
2226
2227 /* coro hv's (and only hv's at the moment) are supported as well */
2228 if (SvSTATEhv_p (aTHX_ cb))
2229 api_ready (aTHX_ cb);
2230 else
1827 { 2231 {
1828 dSP; /* don't disturb outer sp */ 2232 dSP; /* don't disturb outer sp */
1829 SV *cb = av_pop (on_destroy);
1830
1831 PUSHMARK (SP); 2233 PUSHMARK (SP);
1832 2234
1833 if (statusp) 2235 if (coro->status)
1834 { 2236 {
1835 int i; 2237 PUTBACK;
1836 AV *status = (AV *)SvRV (*statusp); 2238 coro_push_av (aTHX_ coro->status, G_ARRAY);
1837 EXTEND (SP, AvFILLp (status) + 1); 2239 SPAGAIN;
1838
1839 for (i = 0; i <= AvFILLp (status); ++i)
1840 PUSHs (AvARRAY (status)[i]);
1841 } 2240 }
1842 2241
1843 PUTBACK; 2242 PUTBACK;
1844 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); 2243 call_sv (cb, G_VOID | G_DISCARD);
1845 } 2244 }
1846 } 2245 }
1847} 2246}
1848 2247
1849static void 2248static void
1850slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2249coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
1851{ 2250{
2251 AV *av;
2252
2253 if (coro->status)
2254 {
2255 av = coro->status;
2256 av_clear (av);
2257 }
2258 else
2259 av = coro->status = newAV ();
2260
2261 /* items are actually not so common, so optimise for this case */
2262 if (items)
2263 {
1852 int i; 2264 int i;
1853 HV *hv = (HV *)SvRV (coro_current);
1854 AV *av = newAV ();
1855 2265
1856 av_extend (av, items - 1); 2266 av_extend (av, items - 1);
2267
1857 for (i = 0; i < items; ++i) 2268 for (i = 0; i < items; ++i)
1858 av_push (av, SvREFCNT_inc_NN (arg [i])); 2269 av_push (av, SvREFCNT_inc_NN (arg [i]));
2270 }
2271}
1859 2272
1860 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); 2273static void
1861 2274slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2275{
1862 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ 2276 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1863 api_ready (aTHX_ sv_manager); 2277 api_ready (aTHX_ sv_manager);
1864 2278
1865 frame->prepare = prepare_schedule; 2279 frame->prepare = prepare_schedule;
1866 frame->check = slf_check_repeat; 2280 frame->check = slf_check_repeat;
2281
2282 /* as a minor optimisation, we could unwind all stacks here */
2283 /* but that puts extra pressure on pp_slf, and is not worth much */
2284 /*coro_unwind_stacks (aTHX);*/
2285}
2286
2287static void
2288slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2289{
2290 HV *coro_hv = (HV *)SvRV (coro_current);
2291
2292 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2293 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2294}
2295
2296static void
2297slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2298{
2299 HV *coro_hv;
2300 struct coro *coro;
2301
2302 if (items <= 0)
2303 croak ("Coro::cancel called without coro object,");
2304
2305 coro = SvSTATE (arg [0]);
2306 coro_hv = coro->hv;
2307
2308 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2309
2310 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2311 {
2312 /* coro currently busy cancelling something, so just notify it */
2313 coro->slf_frame.data = (void *)coro;
2314
2315 frame->prepare = prepare_nop;
2316 frame->check = slf_check_nop;
2317 }
2318 else if (coro_hv == (HV *)SvRV (coro_current))
2319 {
2320 /* cancelling the current coro is allowed, and equals terminate */
2321 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2322 }
2323 else
2324 {
2325 struct coro *self = SvSTATE_current;
2326
2327 if (!self)
2328 croak ("Coro::cancel called outside of thread content,");
2329
2330 /* otherwise we cancel directly, purely for speed reasons
2331 * unfortunately, this requires some magic trickery, as
2332 * somebody else could cancel us, so we have to fight the cancellation.
2333 * this is ugly, and hopefully fully worth the extra speed.
2334 * besides, I can't get the slow-but-safe version working...
2335 */
2336 slf_frame.data = 0;
2337 self->flags |= CF_NOCANCEL;
2338 coro_state_destroy (aTHX_ coro);
2339 self->flags &= ~CF_NOCANCEL;
2340
2341 if (slf_frame.data)
2342 {
2343 /* while we were busy we have been cancelled, so terminate */
2344 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2345 }
2346 else
2347 {
2348 frame->prepare = prepare_nop;
2349 frame->check = slf_check_nop;
2350 }
2351 }
2352}
2353
2354static int
2355slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2356{
2357 frame->prepare = 0;
2358 coro_unwind_stacks (aTHX);
2359
2360 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2361
2362 return 1;
2363}
2364
2365static int
2366safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2367{
2368 if (coro->cctx)
2369 croak ("coro inside C callback, unable to cancel at this time, caught");
2370
2371 if (coro->flags & CF_NEW)
2372 {
2373 coro_set_status (aTHX_ coro, arg, items);
2374 coro_state_destroy (aTHX_ coro);
2375 }
2376 else
2377 {
2378 if (!coro->slf_frame.prepare)
2379 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2380
2381 slf_destroy (aTHX_ coro);
2382
2383 coro_set_status (aTHX_ coro, arg, items);
2384 coro->slf_frame.prepare = prepare_nop;
2385 coro->slf_frame.check = slf_check_safe_cancel;
2386
2387 api_ready (aTHX_ (SV *)coro->hv);
2388 }
2389
2390 return 1;
1867} 2391}
1868 2392
1869/*****************************************************************************/ 2393/*****************************************************************************/
1870/* async pool handler */ 2394/* async pool handler */
1871 2395
… …
1902slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2426slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1903{ 2427{
1904 HV *hv = (HV *)SvRV (coro_current); 2428 HV *hv = (HV *)SvRV (coro_current);
1905 struct coro *coro = SvSTATE_hv ((SV *)hv); 2429 struct coro *coro = SvSTATE_hv ((SV *)hv);
1906 2430
1907 if (expect_true (coro->saved_deffh)) 2431 if (ecb_expect_true (coro->saved_deffh))
1908 { 2432 {
1909 /* subsequent iteration */ 2433 /* subsequent iteration */
1910 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2434 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1911 coro->saved_deffh = 0; 2435 coro->saved_deffh = 0;
1912 2436
1913 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2437 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1914 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2438 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1915 { 2439 {
1916 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2440 slf_init_terminate_cancel_common (aTHX_ frame, hv);
1917 coro->invoke_av = newAV (); 2441 return;
1918
1919 frame->prepare = prepare_nop;
1920 } 2442 }
1921 else 2443 else
1922 { 2444 {
1923 av_clear (GvAV (PL_defgv)); 2445 av_clear (GvAV (PL_defgv));
1924 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2446 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1925 2447
2448 if (ecb_expect_false (coro->swap_sv))
2449 {
2450 SWAP_SVS_LEAVE (coro);
2451 SvREFCNT_dec_NN (coro->swap_sv);
2452 coro->swap_sv = 0;
2453 }
2454
1926 coro->prio = 0; 2455 coro->prio = 0;
1927 2456
1928 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2457 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
1929 api_trace (aTHX_ coro_current, 0); 2458 api_trace (aTHX_ coro_current, 0);
1930 2459
1931 frame->prepare = prepare_schedule; 2460 frame->prepare = prepare_schedule;
1932 av_push (av_async_pool, SvREFCNT_inc (hv)); 2461 av_push (av_async_pool, SvREFCNT_inc (hv));
1933 } 2462 }
… …
1949 2478
1950static void 2479static void
1951coro_rouse_callback (pTHX_ CV *cv) 2480coro_rouse_callback (pTHX_ CV *cv)
1952{ 2481{
1953 dXSARGS; 2482 dXSARGS;
1954 SV *data = (SV *)GENSUB_ARG; 2483 SV *data = (SV *)S_GENSUB_ARG;
1955 2484
1956 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2485 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1957 { 2486 {
1958 /* first call, set args */ 2487 /* first call, set args */
2488 SV *coro = SvRV (data);
1959 AV *av = newAV (); 2489 AV *av = newAV ();
1960 SV *coro = SvRV (data);
1961 2490
1962 SvRV_set (data, (SV *)av); 2491 SvRV_set (data, (SV *)av);
1963 api_ready (aTHX_ coro);
1964 SvREFCNT_dec (coro);
1965 2492
1966 /* better take a full copy of the arguments */ 2493 /* better take a full copy of the arguments */
1967 while (items--) 2494 while (items--)
1968 av_store (av, items, newSVsv (ST (items))); 2495 av_store (av, items, newSVsv (ST (items)));
2496
2497 api_ready (aTHX_ coro);
2498 SvREFCNT_dec (coro);
1969 } 2499 }
1970 2500
1971 XSRETURN_EMPTY; 2501 XSRETURN_EMPTY;
1972} 2502}
1973 2503
1974static int 2504static int
1975slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2505slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1976{ 2506{
1977 SV *data = (SV *)frame->data; 2507 SV *data = (SV *)frame->data;
1978 2508
1979 if (CORO_THROW) 2509 if (CORO_THROW)
1980 return 0; 2510 return 0;
1981 2511
1982 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2512 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1983 return 1; 2513 return 1;
… …
1990 2520
1991 EXTEND (SP, AvFILLp (av) + 1); 2521 EXTEND (SP, AvFILLp (av) + 1);
1992 for (i = 0; i <= AvFILLp (av); ++i) 2522 for (i = 0; i <= AvFILLp (av); ++i)
1993 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2523 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1994 2524
1995 /* we have stolen the elements, so ste length to zero and free */ 2525 /* we have stolen the elements, so set length to zero and free */
1996 AvFILLp (av) = -1; 2526 AvFILLp (av) = -1;
1997 av_undef (av); 2527 av_undef (av);
1998 2528
1999 PUTBACK; 2529 PUTBACK;
2000 } 2530 }
… …
2019 cb = sv_2mortal (coro->rouse_cb); 2549 cb = sv_2mortal (coro->rouse_cb);
2020 coro->rouse_cb = 0; 2550 coro->rouse_cb = 0;
2021 } 2551 }
2022 2552
2023 if (!SvROK (cb) 2553 if (!SvROK (cb)
2024 || SvTYPE (SvRV (cb)) != SVt_PVCV 2554 || SvTYPE (SvRV (cb)) != SVt_PVCV
2025 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2555 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2026 croak ("Coro::rouse_wait called with illegal callback argument,"); 2556 croak ("Coro::rouse_wait called with illegal callback argument,");
2027 2557
2028 { 2558 {
2029 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2559 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2030 SV *data = (SV *)GENSUB_ARG; 2560 SV *data = (SV *)S_GENSUB_ARG;
2031 2561
2032 frame->data = (void *)data; 2562 frame->data = (void *)data;
2033 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2563 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2034 frame->check = slf_check_rouse_wait; 2564 frame->check = slf_check_rouse_wait;
2035 } 2565 }
… …
2039coro_new_rouse_cb (pTHX) 2569coro_new_rouse_cb (pTHX)
2040{ 2570{
2041 HV *hv = (HV *)SvRV (coro_current); 2571 HV *hv = (HV *)SvRV (coro_current);
2042 struct coro *coro = SvSTATE_hv (hv); 2572 struct coro *coro = SvSTATE_hv (hv);
2043 SV *data = newRV_inc ((SV *)hv); 2573 SV *data = newRV_inc ((SV *)hv);
2044 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2574 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2045 2575
2046 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2576 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2047 SvREFCNT_dec (data); /* magicext increases the refcount */ 2577 SvREFCNT_dec (data); /* magicext increases the refcount */
2048 2578
2049 SvREFCNT_dec (coro->rouse_cb); 2579 SvREFCNT_dec (coro->rouse_cb);
… …
2146static void 2676static void
2147slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2677slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2148{ 2678{
2149 frame->prepare = prepare_cede_notself; 2679 frame->prepare = prepare_cede_notself;
2150 frame->check = slf_check_nop; 2680 frame->check = slf_check_nop;
2681}
2682
2683/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2684static void
2685slf_destroy (pTHX_ struct coro *coro)
2686{
2687 struct CoroSLF frame = coro->slf_frame;
2688
2689 /*
2690 * The on_destroy below most likely is from an SLF call.
2691 * Since by definition the SLF call will not finish when we destroy
2692 * the coro, we will have to force-finish it here, otherwise
2693 * cleanup functions cannot call SLF functions.
2694 */
2695 coro->slf_frame.prepare = 0;
2696
2697 /* this callback is reserved for slf functions needing to do cleanup */
2698 if (frame.destroy && frame.prepare && !PL_dirty)
2699 frame.destroy (aTHX_ &frame);
2151} 2700}
2152 2701
2153/* 2702/*
2154 * these not obviously related functions are all rolled into one 2703 * these not obviously related functions are all rolled into one
2155 * function to increase chances that they all will call transfer with the same 2704 * function to increase chances that they all will call transfer with the same
… …
2162 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2711 I32 checkmark; /* mark SP to see how many elements check has pushed */
2163 2712
2164 /* set up the slf frame, unless it has already been set-up */ 2713 /* set up the slf frame, unless it has already been set-up */
2165 /* the latter happens when a new coro has been started */ 2714 /* the latter happens when a new coro has been started */
2166 /* or when a new cctx was attached to an existing coroutine */ 2715 /* or when a new cctx was attached to an existing coroutine */
2167 if (expect_true (!slf_frame.prepare)) 2716 if (ecb_expect_true (!slf_frame.prepare))
2168 { 2717 {
2169 /* first iteration */ 2718 /* first iteration */
2170 dSP; 2719 dSP;
2171 SV **arg = PL_stack_base + TOPMARK + 1; 2720 SV **arg = PL_stack_base + TOPMARK + 1;
2172 int items = SP - arg; /* args without function object */ 2721 int items = SP - arg; /* args without function object */
… …
2213 while (slf_frame.check (aTHX_ &slf_frame)); 2762 while (slf_frame.check (aTHX_ &slf_frame));
2214 2763
2215 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2764 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2216 2765
2217 /* exception handling */ 2766 /* exception handling */
2218 if (expect_false (CORO_THROW)) 2767 if (ecb_expect_false (CORO_THROW))
2219 { 2768 {
2220 SV *exception = sv_2mortal (CORO_THROW); 2769 SV *exception = sv_2mortal (CORO_THROW);
2221 2770
2222 CORO_THROW = 0; 2771 CORO_THROW = 0;
2223 sv_setsv (ERRSV, exception); 2772 sv_setsv (ERRSV, exception);
2224 croak (0); 2773 croak (0);
2225 } 2774 }
2226 2775
2227 /* return value handling - mostly like entersub */ 2776 /* return value handling - mostly like entersub */
2228 /* make sure we put something on the stack in scalar context */ 2777 /* make sure we put something on the stack in scalar context */
2229 if (GIMME_V == G_SCALAR) 2778 if (GIMME_V == G_SCALAR
2779 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2230 { 2780 {
2231 dSP; 2781 dSP;
2232 SV **bot = PL_stack_base + checkmark; 2782 SV **bot = PL_stack_base + checkmark;
2233 2783
2234 if (sp == bot) /* too few, push undef */ 2784 if (sp == bot) /* too few, push undef */
2235 bot [1] = &PL_sv_undef; 2785 bot [1] = &PL_sv_undef;
2236 else if (sp != bot + 1) /* too many, take last one */ 2786 else /* too many, take last one */
2237 bot [1] = *sp; 2787 bot [1] = *sp;
2238 2788
2239 SP = bot + 1; 2789 SP = bot + 1;
2240 2790
2241 PUTBACK; 2791 PUTBACK;
… …
2274 if (PL_op->op_flags & OPf_STACKED) 2824 if (PL_op->op_flags & OPf_STACKED)
2275 { 2825 {
2276 if (items > slf_arga) 2826 if (items > slf_arga)
2277 { 2827 {
2278 slf_arga = items; 2828 slf_arga = items;
2279 free (slf_argv); 2829 Safefree (slf_argv);
2280 slf_argv = malloc (slf_arga * sizeof (SV *)); 2830 New (0, slf_argv, slf_arga, SV *);
2281 } 2831 }
2282 2832
2283 slf_argc = items; 2833 slf_argc = items;
2284 2834
2285 for (i = 0; i < items; ++i) 2835 for (i = 0; i < items; ++i)
… …
2290 2840
2291 PL_op->op_ppaddr = pp_slf; 2841 PL_op->op_ppaddr = pp_slf;
2292 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */ 2842 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2293 2843
2294 PL_op = (OP *)&slf_restore; 2844 PL_op = (OP *)&slf_restore;
2845}
2846
2847/*****************************************************************************/
2848/* dynamic wind */
2849
2850static void
2851on_enterleave_call (pTHX_ SV *cb)
2852{
2853 dSP;
2854
2855 PUSHSTACK;
2856
2857 PUSHMARK (SP);
2858 PUTBACK;
2859 call_sv (cb, G_VOID | G_DISCARD);
2860 SPAGAIN;
2861
2862 POPSTACK;
2863}
2864
2865static SV *
2866coro_avp_pop_and_free (pTHX_ AV **avp)
2867{
2868 AV *av = *avp;
2869 SV *res = av_pop (av);
2870
2871 if (AvFILLp (av) < 0)
2872 {
2873 *avp = 0;
2874 SvREFCNT_dec (av);
2875 }
2876
2877 return res;
2878}
2879
2880static void
2881coro_pop_on_enter (pTHX_ void *coro)
2882{
2883 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2884 SvREFCNT_dec (cb);
2885}
2886
2887static void
2888coro_pop_on_leave (pTHX_ void *coro)
2889{
2890 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2891 on_enterleave_call (aTHX_ sv_2mortal (cb));
2892}
2893
2894static void
2895enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2896{
2897 if (!hook)
2898 return;
2899
2900 if (!*avp)
2901 {
2902 *avp = newAV ();
2903 AvREAL_off (*avp);
2904 }
2905
2906 av_push (*avp, (SV *)hook);
2907 av_push (*avp, (SV *)arg);
2908}
2909
2910static void
2911enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2912{
2913 AV *av = *avp;
2914 int i;
2915
2916 if (!av)
2917 return;
2918
2919 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2920 if (AvARRAY (av)[i] == (SV *)hook)
2921 {
2922 if (execute)
2923 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2924
2925 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2926 av_pop (av);
2927 av_pop (av);
2928 break;
2929 }
2930
2931 if (AvFILLp (av) >= 0)
2932 {
2933 *avp = 0;
2934 SvREFCNT_dec_NN (av);
2935 }
2936}
2937
2938static void
2939api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2940{
2941 struct coro *coro = SvSTATE (coro_sv);
2942
2943 if (SvSTATE_current == coro)
2944 if (enter)
2945 enter (aTHX_ enter_arg);
2946
2947 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2948 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2949}
2950
2951static void
2952api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2953{
2954 struct coro *coro = SvSTATE (coro_sv);
2955
2956 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2957 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2958}
2959
2960static void
2961savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2962{
2963 struct coro *coro = SvSTATE_current;
2964
2965 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2966}
2967
2968static void
2969savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2970{
2971 struct coro *coro = SvSTATE_current;
2972
2973 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2974}
2975
2976static void
2977api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2978{
2979 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2980
2981 /* this ought to be much cheaper than malloc + a single destructor call */
2982 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2983 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2295} 2984}
2296 2985
2297/*****************************************************************************/ 2986/*****************************************************************************/
2298/* PerlIO::cede */ 2987/* PerlIO::cede */
2299 2988
… …
2301{ 2990{
2302 PerlIOBuf base; 2991 PerlIOBuf base;
2303 NV next, every; 2992 NV next, every;
2304} PerlIOCede; 2993} PerlIOCede;
2305 2994
2306static IV 2995static IV ecb_cold
2307PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2996PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2308{ 2997{
2309 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2998 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2310 2999
2311 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3000 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2312 self->next = nvtime () + self->every; 3001 self->next = nvtime () + self->every;
2313 3002
2314 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3003 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2315} 3004}
2316 3005
2317static SV * 3006static SV * ecb_cold
2318PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3007PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2319{ 3008{
2320 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3009 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2321 3010
2322 return newSVnv (self->every); 3011 return newSVnv (self->every);
… …
2373/* Coro::Semaphore & Coro::Signal */ 3062/* Coro::Semaphore & Coro::Signal */
2374 3063
2375static SV * 3064static SV *
2376coro_waitarray_new (pTHX_ int count) 3065coro_waitarray_new (pTHX_ int count)
2377{ 3066{
2378 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3067 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2379 AV *av = newAV (); 3068 AV *av = newAV ();
2380 SV **ary; 3069 SV **ary;
2381 3070
2382 /* unfortunately, building manually saves memory */ 3071 /* unfortunately, building manually saves memory */
2383 Newx (ary, 2, SV *); 3072 Newx (ary, 2, SV *);
… …
2429 XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); 3118 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2430 PUTBACK; 3119 PUTBACK;
2431 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); 3120 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2432 } 3121 }
2433 3122
2434 SvREFCNT_dec (cb); 3123 SvREFCNT_dec_NN (cb);
2435 } 3124 }
2436} 3125}
2437 3126
2438static void 3127static void
2439coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3128coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2440{ 3129{
2441 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3130 /* call $sem->adjust (0) to possibly wake up some other waiters */
2442 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3131 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2443} 3132}
2444 3133
2445static int 3134static int
2446slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 3135slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2447{ 3136{
2448 AV *av = (AV *)frame->data; 3137 AV *av = (AV *)frame->data;
2449 SV *count_sv = AvARRAY (av)[0]; 3138 SV *count_sv = AvARRAY (av)[0];
3139 SV *coro_hv = SvRV (coro_current);
3140
3141 frame->destroy = 0;
2450 3142
2451 /* if we are about to throw, don't actually acquire the lock, just throw */ 3143 /* if we are about to throw, don't actually acquire the lock, just throw */
2452 if (CORO_THROW) 3144 if (ecb_expect_false (CORO_THROW))
3145 {
3146 /* we still might be responsible for the semaphore, so wake up others */
3147 coro_semaphore_adjust (aTHX_ av, 0);
3148
2453 return 0; 3149 return 0;
3150 }
2454 else if (SvIVX (count_sv) > 0) 3151 else if (SvIVX (count_sv) > 0)
2455 { 3152 {
2456 SvSTATE_current->on_destroy = 0;
2457
2458 if (acquire) 3153 if (acquire)
2459 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3154 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2460 else 3155 else
2461 coro_semaphore_adjust (aTHX_ av, 0); 3156 coro_semaphore_adjust (aTHX_ av, 0);
2462 3157
… …
2466 { 3161 {
2467 int i; 3162 int i;
2468 /* if we were woken up but can't down, we look through the whole */ 3163 /* if we were woken up but can't down, we look through the whole */
2469 /* waiters list and only add us if we aren't in there already */ 3164 /* waiters list and only add us if we aren't in there already */
2470 /* this avoids some degenerate memory usage cases */ 3165 /* this avoids some degenerate memory usage cases */
2471 3166 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2472 for (i = 1; i <= AvFILLp (av); ++i)
2473 if (AvARRAY (av)[i] == SvRV (coro_current)) 3167 if (AvARRAY (av)[i] == coro_hv)
2474 return 1; 3168 return 1;
2475 3169
2476 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3170 av_push (av, SvREFCNT_inc (coro_hv));
2477 return 1; 3171 return 1;
2478 } 3172 }
2479} 3173}
2480 3174
2481static int 3175static int
… …
2504 { 3198 {
2505 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3199 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2506 3200
2507 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3201 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2508 frame->prepare = prepare_schedule; 3202 frame->prepare = prepare_schedule;
2509
2510 /* to avoid race conditions when a woken-up coro gets terminated */ 3203 /* to avoid race conditions when a woken-up coro gets terminated */
2511 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3204 /* we arrange for a temporary on_destroy that calls adjust (0) */
2512 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3205 frame->destroy = coro_semaphore_destroy;
2513 } 3206 }
2514} 3207}
2515 3208
2516static void 3209static void
2517slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3210slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2525{ 3218{
2526 if (items >= 2) 3219 if (items >= 2)
2527 { 3220 {
2528 /* callback form */ 3221 /* callback form */
2529 AV *av = (AV *)SvRV (arg [0]); 3222 AV *av = (AV *)SvRV (arg [0]);
2530 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); 3223 SV *cb_cv = s_get_cv_croak (arg [1]);
2531 3224
2532 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); 3225 av_push (av, SvREFCNT_inc_NN (cb_cv));
2533 3226
2534 if (SvIVX (AvARRAY (av)[0]) > 0) 3227 if (SvIVX (AvARRAY (av)[0]) > 0)
2535 coro_semaphore_adjust (aTHX_ av, 0); 3228 coro_semaphore_adjust (aTHX_ av, 0);
2536 3229
2537 frame->prepare = prepare_nop; 3230 frame->prepare = prepare_nop;
… …
2561 AvARRAY (av)[0] = AvARRAY (av)[1]; 3254 AvARRAY (av)[0] = AvARRAY (av)[1];
2562 AvARRAY (av)[1] = cb; 3255 AvARRAY (av)[1] = cb;
2563 3256
2564 cb = av_shift (av); 3257 cb = av_shift (av);
2565 3258
3259 if (SvTYPE (cb) == SVt_PVCV)
3260 {
3261 dSP;
3262 PUSHMARK (SP);
3263 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3264 PUTBACK;
3265 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3266 }
3267 else
3268 {
2566 api_ready (aTHX_ cb); 3269 api_ready (aTHX_ cb);
2567 sv_setiv (cb, 0); /* signal waiter */ 3270 sv_setiv (cb, 0); /* signal waiter */
3271 }
3272
2568 SvREFCNT_dec (cb); 3273 SvREFCNT_dec_NN (cb);
2569 3274
2570 --count; 3275 --count;
2571 } 3276 }
2572} 3277}
2573 3278
… …
2581static void 3286static void
2582slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3287slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2583{ 3288{
2584 AV *av = (AV *)SvRV (arg [0]); 3289 AV *av = (AV *)SvRV (arg [0]);
2585 3290
3291 if (items >= 2)
3292 {
3293 SV *cb_cv = s_get_cv_croak (arg [1]);
3294 av_push (av, SvREFCNT_inc_NN (cb_cv));
3295
2586 if (SvIVX (AvARRAY (av)[0])) 3296 if (SvIVX (AvARRAY (av)[0]))
3297 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3298
3299 frame->prepare = prepare_nop;
3300 frame->check = slf_check_nop;
3301 }
3302 else if (SvIVX (AvARRAY (av)[0]))
2587 { 3303 {
2588 SvIVX (AvARRAY (av)[0]) = 0; 3304 SvIVX (AvARRAY (av)[0]) = 0;
2589 frame->prepare = prepare_nop; 3305 frame->prepare = prepare_nop;
2590 frame->check = slf_check_nop; 3306 frame->check = slf_check_nop;
2591 } 3307 }
2592 else 3308 else
2593 { 3309 {
2594 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3310 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2595 3311
2596 av_push (av, waiter); 3312 av_push (av, waiter);
2597 3313
2598 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3314 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2599 frame->prepare = prepare_schedule; 3315 frame->prepare = prepare_schedule;
… …
2617 3333
2618static void 3334static void
2619coro_aio_callback (pTHX_ CV *cv) 3335coro_aio_callback (pTHX_ CV *cv)
2620{ 3336{
2621 dXSARGS; 3337 dXSARGS;
2622 AV *state = (AV *)GENSUB_ARG; 3338 AV *state = (AV *)S_GENSUB_ARG;
2623 SV *coro = av_pop (state); 3339 SV *coro = av_pop (state);
2624 SV *data_sv = newSV (sizeof (struct io_state)); 3340 SV *data_sv = newSV (sizeof (struct io_state));
2625 3341
2626 av_extend (state, items - 1); 3342 av_extend (state, items - 1);
2627 3343
… …
2647 } 3363 }
2648 3364
2649 av_push (state, data_sv); 3365 av_push (state, data_sv);
2650 3366
2651 api_ready (aTHX_ coro); 3367 api_ready (aTHX_ coro);
2652 SvREFCNT_dec (coro); 3368 SvREFCNT_dec_NN (coro);
2653 SvREFCNT_dec ((AV *)state); 3369 SvREFCNT_dec_NN ((AV *)state);
2654} 3370}
2655 3371
2656static int 3372static int
2657slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3373slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2658{ 3374{
… …
2663 /* it quickly returns */ 3379 /* it quickly returns */
2664 if (CORO_THROW) 3380 if (CORO_THROW)
2665 return 0; 3381 return 0;
2666 3382
2667 /* one element that is an RV? repeat! */ 3383 /* one element that is an RV? repeat! */
2668 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3384 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2669 return 1; 3385 return 1;
2670 3386
2671 /* restore status */ 3387 /* restore status */
2672 { 3388 {
2673 SV *data_sv = av_pop (state); 3389 SV *data_sv = av_pop (state);
… …
2676 errno = data->errorno; 3392 errno = data->errorno;
2677 PL_laststype = data->laststype; 3393 PL_laststype = data->laststype;
2678 PL_laststatval = data->laststatval; 3394 PL_laststatval = data->laststatval;
2679 PL_statcache = data->statcache; 3395 PL_statcache = data->statcache;
2680 3396
2681 SvREFCNT_dec (data_sv); 3397 SvREFCNT_dec_NN (data_sv);
2682 } 3398 }
2683 3399
2684 /* push result values */ 3400 /* push result values */
2685 { 3401 {
2686 dSP; 3402 dSP;
… …
2712 dSP; 3428 dSP;
2713 3429
2714 static SV *prio_cv; 3430 static SV *prio_cv;
2715 static SV *prio_sv; 3431 static SV *prio_sv;
2716 3432
2717 if (expect_false (!prio_cv)) 3433 if (ecb_expect_false (!prio_cv))
2718 { 3434 {
2719 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3435 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2720 prio_sv = newSViv (0); 3436 prio_sv = newSViv (0);
2721 } 3437 }
2722 3438
… …
2741 3457
2742 for (i = 0; i < items; ++i) 3458 for (i = 0; i < items; ++i)
2743 PUSHs (arg [i]); 3459 PUSHs (arg [i]);
2744 3460
2745 /* now push the callback closure */ 3461 /* now push the callback closure */
2746 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3462 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2747 3463
2748 /* now call the AIO function - we assume our request is uncancelable */ 3464 /* now call the AIO function - we assume our request is uncancelable */
2749 PUTBACK; 3465 PUTBACK;
2750 call_sv ((SV *)req, G_VOID | G_DISCARD); 3466 call_sv ((SV *)req, G_VOID | G_DISCARD);
2751 } 3467 }
2752 3468
2753 /* now that the requets is going, we loop toll we have a result */ 3469 /* now that the request is going, we loop till we have a result */
2754 frame->data = (void *)state; 3470 frame->data = (void *)state;
2755 frame->prepare = prepare_schedule; 3471 frame->prepare = prepare_schedule;
2756 frame->check = slf_check_aio_req; 3472 frame->check = slf_check_aio_req;
2757} 3473}
2758 3474
… …
2770 3486
2771#if CORO_CLONE 3487#if CORO_CLONE
2772# include "clone.c" 3488# include "clone.c"
2773#endif 3489#endif
2774 3490
3491/*****************************************************************************/
3492
3493static SV *
3494coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3495{
3496 SV *coro_sv;
3497 struct coro *coro;
3498 MAGIC *mg;
3499 HV *hv;
3500 SV *cb;
3501 int i;
3502
3503 if (argc > 0)
3504 {
3505 cb = s_get_cv_croak (argv [0]);
3506
3507 if (!is_coro)
3508 {
3509 if (CvISXSUB (cb))
3510 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3511
3512 if (!CvROOT (cb))
3513 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3514 }
3515 }
3516
3517 Newz (0, coro, 1, struct coro);
3518 coro->args = newAV ();
3519 coro->flags = CF_NEW;
3520
3521 if (coro_first) coro_first->prev = coro;
3522 coro->next = coro_first;
3523 coro_first = coro;
3524
3525 coro->hv = hv = newHV ();
3526 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3527 mg->mg_flags |= MGf_DUP;
3528 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3529
3530 if (argc > 0)
3531 {
3532 av_extend (coro->args, argc + is_coro - 1);
3533
3534 if (is_coro)
3535 {
3536 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3537 cb = (SV *)cv_coro_run;
3538 }
3539
3540 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3541
3542 for (i = 1; i < argc; i++)
3543 av_push (coro->args, newSVsv (argv [i]));
3544 }
3545
3546 return coro_sv;
3547}
3548
3549#ifndef __cplusplus
3550ecb_cold XS(boot_Coro__State);
3551#endif
3552
3553#if CORO_JIT
3554
3555static void ecb_noinline ecb_cold
3556pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3557{
3558 dSP;
3559 AV *av = newAV ();
3560
3561 av_store (av, 3, newSVuv (d));
3562 av_store (av, 2, newSVuv (c));
3563 av_store (av, 1, newSVuv (b));
3564 av_store (av, 0, newSVuv (a));
3565
3566 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3567
3568 PUTBACK;
3569}
3570
3571static void ecb_noinline ecb_cold
3572jit_init (pTHX)
3573{
3574 dSP;
3575 SV *load, *save;
3576 char *map_base;
3577 char *load_ptr, *save_ptr;
3578 STRLEN load_len, save_len, map_len;
3579 int count;
3580
3581 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3582
3583 PUSHMARK (SP);
3584 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3585 #include "state.h"
3586 count = call_pv ("Coro::State::_jit", G_ARRAY);
3587 SPAGAIN;
3588
3589 save = POPs; save_ptr = SvPVbyte (save, save_len);
3590 load = POPs; load_ptr = SvPVbyte (load, load_len);
3591
3592 map_len = load_len + save_len + 16;
3593
3594 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3595
3596 if (map_base == (char *)MAP_FAILED)
3597 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3598
3599 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3600
3601 load_perl_slots = (load_save_perl_slots_type)map_base;
3602 memcpy (map_base, load_ptr, load_len);
3603
3604 map_base += (load_len + 15) & ~15;
3605
3606 save_perl_slots = (load_save_perl_slots_type)map_base;
3607 memcpy (map_base, save_ptr, save_len);
3608
3609 /* we are good citizens and try to make the page read-only, so the evil evil */
3610 /* hackers might have it a bit more difficult */
3611 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3612
3613 PUTBACK;
3614 eval_pv ("undef &Coro::State::_jit", 1);
3615}
3616
3617#endif
3618
2775MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3619MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2776 3620
2777PROTOTYPES: DISABLE 3621PROTOTYPES: DISABLE
2778 3622
2779BOOT: 3623BOOT:
2780{ 3624{
3625#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3626#include "state.h"
2781#ifdef USE_ITHREADS 3627#ifdef USE_ITHREADS
2782# if CORO_PTHREAD 3628# if CORO_PTHREAD
2783 coro_thx = PERL_GET_CONTEXT; 3629 coro_thx = PERL_GET_CONTEXT;
2784# endif 3630# endif
2785#endif 3631#endif
2786 BOOT_PAGESIZE; 3632 /* perl defines these to check for existance first, but why it doesn't */
3633 /* just create them one at init time is not clear to me, except for */
3634 /* programs trying to delete them, but... */
3635 /* anyway, we declare this as invalid and make sure they are initialised here */
3636 DEFSV;
3637 ERRSV;
2787 3638
2788 cctx_current = cctx_new_empty (); 3639 cctx_current = cctx_new_empty ();
2789 3640
2790 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3641 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2791 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3642 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2792 3643
2793 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3644 {
2794 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3645 /*
2795 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3646 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3647 * by coro_sig_vtbl in hash values.
3648 */
3649 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3650
3651 /* this only works if perl doesn't have a vtbl for %SIG */
3652 assert (!mg->mg_virtual);
3653
3654 /*
3655 * The irony is that the perl API itself asserts that mg_virtual
3656 * must be non-const, yet perl5porters insisted on marking their
3657 * vtbls as read-only, just to thwart perl modules from patching
3658 * them.
3659 */
3660 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3661 mg->mg_flags |= MGf_COPY;
3662
3663 coro_sigelem_vtbl = PL_vtbl_sigelem;
3664 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3665 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3666 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3667 }
2796 3668
2797 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2798 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3669 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2799 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3670 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2800 3671
2801 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3672 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
2802 3673
… …
2831 coroapi.prepare_nop = prepare_nop; 3702 coroapi.prepare_nop = prepare_nop;
2832 coroapi.prepare_schedule = prepare_schedule; 3703 coroapi.prepare_schedule = prepare_schedule;
2833 coroapi.prepare_cede = prepare_cede; 3704 coroapi.prepare_cede = prepare_cede;
2834 coroapi.prepare_cede_notself = prepare_cede_notself; 3705 coroapi.prepare_cede_notself = prepare_cede_notself;
2835 3706
2836 { 3707 time_init (aTHX);
2837 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2838 3708
2839 if (!svp) croak ("Time::HiRes is required");
2840 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2841
2842 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2843 }
2844
2845 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3709 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3710#if CORO_JIT
3711 PUTBACK;
3712 jit_init (aTHX);
3713 SPAGAIN;
3714#endif
2846} 3715}
2847 3716
2848SV * 3717SV *
2849new (char *klass, ...) 3718new (SV *klass, ...)
2850 ALIAS: 3719 ALIAS:
2851 Coro::new = 1 3720 Coro::new = 1
2852 CODE: 3721 CODE:
2853{ 3722 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2854 struct coro *coro; 3723 OUTPUT:
2855 MAGIC *mg;
2856 HV *hv;
2857 CV *cb;
2858 int i;
2859
2860 if (items > 1)
2861 {
2862 cb = coro_sv_2cv (aTHX_ ST (1));
2863
2864 if (!ix)
2865 {
2866 if (CvISXSUB (cb))
2867 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2868
2869 if (!CvROOT (cb))
2870 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2871 }
2872 }
2873
2874 Newz (0, coro, 1, struct coro);
2875 coro->args = newAV ();
2876 coro->flags = CF_NEW;
2877
2878 if (coro_first) coro_first->prev = coro;
2879 coro->next = coro_first;
2880 coro_first = coro;
2881
2882 coro->hv = hv = newHV ();
2883 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2884 mg->mg_flags |= MGf_DUP;
2885 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2886
2887 if (items > 1)
2888 {
2889 av_extend (coro->args, items - 1 + ix - 1);
2890
2891 if (ix)
2892 {
2893 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2894 cb = cv_coro_run;
2895 }
2896
2897 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2898
2899 for (i = 2; i < items; i++)
2900 av_push (coro->args, newSVsv (ST (i)));
2901 }
2902}
2903 OUTPUT:
2904 RETVAL 3724 RETVAL
2905 3725
2906void 3726void
2907transfer (...) 3727transfer (...)
2908 PROTOTYPE: $$ 3728 PROTOTYPE: $$
2909 CODE: 3729 CODE:
2910 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3730 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2911
2912bool
2913_destroy (SV *coro_sv)
2914 CODE:
2915 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2916 OUTPUT:
2917 RETVAL
2918
2919void
2920_exit (int code)
2921 PROTOTYPE: $
2922 CODE:
2923 _exit (code);
2924 3731
2925SV * 3732SV *
2926clone (Coro::State coro) 3733clone (Coro::State coro)
2927 CODE: 3734 CODE:
2928{ 3735{
… …
2983void 3790void
2984list () 3791list ()
2985 PROTOTYPE: 3792 PROTOTYPE:
2986 PPCODE: 3793 PPCODE:
2987{ 3794{
2988 struct coro *coro; 3795 struct coro *coro;
2989 for (coro = coro_first; coro; coro = coro->next) 3796 for (coro = coro_first; coro; coro = coro->next)
2990 if (coro->hv) 3797 if (coro->hv)
2991 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3798 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2992} 3799}
2993 3800
… …
2997 eval = 1 3804 eval = 1
2998 CODE: 3805 CODE:
2999{ 3806{
3000 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3807 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
3001 { 3808 {
3002 struct coro temp; 3809 struct coro *current = SvSTATE_current;
3810 struct CoroSLF slf_save;
3003 3811
3004 if (!(coro->flags & CF_RUNNING)) 3812 if (current != coro)
3005 { 3813 {
3006 PUTBACK; 3814 PUTBACK;
3007 save_perl (aTHX_ &temp); 3815 save_perl (aTHX_ current);
3008 load_perl (aTHX_ coro); 3816 load_perl (aTHX_ coro);
3817 /* the coro is most likely in an active SLF call.
3818 * while not strictly required (the code we execute is
3819 * not allowed to call any SLF functions), it's cleaner
3820 * to reinitialise the slf_frame and restore it later.
3821 * This might one day allow us to actually do SLF calls
3822 * from code executed here.
3823 */
3824 slf_save = slf_frame;
3825 slf_frame.prepare = 0;
3826 SPAGAIN;
3009 } 3827 }
3010 3828
3011 {
3012 dSP;
3013 ENTER;
3014 SAVETMPS;
3015 PUTBACK;
3016 PUSHSTACK; 3829 PUSHSTACK;
3830
3017 PUSHMARK (SP); 3831 PUSHMARK (SP);
3832 PUTBACK;
3018 3833
3019 if (ix) 3834 if (ix)
3020 eval_sv (coderef, 0); 3835 eval_sv (coderef, 0);
3021 else 3836 else
3022 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3837 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3023 3838
3024 POPSTACK; 3839 POPSTACK;
3025 SPAGAIN; 3840 SPAGAIN;
3026 FREETMPS;
3027 LEAVE;
3028 PUTBACK;
3029 }
3030 3841
3031 if (!(coro->flags & CF_RUNNING)) 3842 if (current != coro)
3032 { 3843 {
3844 PUTBACK;
3845 slf_frame = slf_save;
3033 save_perl (aTHX_ coro); 3846 save_perl (aTHX_ coro);
3034 load_perl (aTHX_ &temp); 3847 load_perl (aTHX_ current);
3035 SPAGAIN; 3848 SPAGAIN;
3036 } 3849 }
3037 } 3850 }
3038} 3851}
3039 3852
… …
3042 PROTOTYPE: $ 3855 PROTOTYPE: $
3043 ALIAS: 3856 ALIAS:
3044 is_ready = CF_READY 3857 is_ready = CF_READY
3045 is_running = CF_RUNNING 3858 is_running = CF_RUNNING
3046 is_new = CF_NEW 3859 is_new = CF_NEW
3047 is_destroyed = CF_DESTROYED 3860 is_destroyed = CF_ZOMBIE
3861 is_zombie = CF_ZOMBIE
3862 is_suspended = CF_SUSPENDED
3048 CODE: 3863 CODE:
3049 RETVAL = boolSV (coro->flags & ix); 3864 RETVAL = boolSV (coro->flags & ix);
3050 OUTPUT: 3865 OUTPUT:
3051 RETVAL 3866 RETVAL
3052 3867
3053void 3868void
3054throw (Coro::State self, SV *throw = &PL_sv_undef) 3869throw (SV *self, SV *exception = &PL_sv_undef)
3055 PROTOTYPE: $;$ 3870 PROTOTYPE: $;$
3056 CODE: 3871 CODE:
3057{ 3872{
3873 struct coro *coro = SvSTATE (self);
3058 struct coro *current = SvSTATE_current; 3874 struct coro *current = SvSTATE_current;
3059 SV **throwp = self == current ? &CORO_THROW : &self->except; 3875 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
3060 SvREFCNT_dec (*throwp); 3876 SvREFCNT_dec (*exceptionp);
3061 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3877 SvGETMAGIC (exception);
3878 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3879
3880 api_ready (aTHX_ self);
3062} 3881}
3063 3882
3064void 3883void
3065api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3884api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3066 PROTOTYPE: $;$ 3885 PROTOTYPE: $;$
… …
3117 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3936 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3118 3937
3119 SV *tmp = *src; *src = *dst; *dst = tmp; 3938 SV *tmp = *src; *src = *dst; *dst = tmp;
3120 } 3939 }
3121 3940
3941void
3942cancel (Coro::State self)
3943 CODE:
3944 coro_state_destroy (aTHX_ self);
3945
3946SV *
3947enable_times (int enabled = enable_times)
3948 CODE:
3949{
3950 RETVAL = boolSV (enable_times);
3951
3952 if (enabled != enable_times)
3953 {
3954 enable_times = enabled;
3955
3956 coro_times_update ();
3957 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3958 }
3959}
3960 OUTPUT:
3961 RETVAL
3962
3963void
3964times (Coro::State self)
3965 PPCODE:
3966{
3967 struct coro *current = SvSTATE (coro_current);
3968
3969 if (ecb_expect_false (current == self))
3970 {
3971 coro_times_update ();
3972 coro_times_add (SvSTATE (coro_current));
3973 }
3974
3975 EXTEND (SP, 2);
3976 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3977 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3978
3979 if (ecb_expect_false (current == self))
3980 coro_times_sub (SvSTATE (coro_current));
3981}
3982
3983void
3984swap_sv (Coro::State coro, SV *sva, SV *svb)
3985 CODE:
3986{
3987 struct coro *current = SvSTATE_current;
3988 AV *swap_sv;
3989 int i;
3990
3991 sva = SvRV (sva);
3992 svb = SvRV (svb);
3993
3994 if (current == coro)
3995 SWAP_SVS_LEAVE (current);
3996
3997 if (!coro->swap_sv)
3998 coro->swap_sv = newAV ();
3999
4000 swap_sv = coro->swap_sv;
4001
4002 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
4003 {
4004 SV *a = AvARRAY (swap_sv)[i ];
4005 SV *b = AvARRAY (swap_sv)[i + 1];
4006
4007 if (a == sva && b == svb)
4008 {
4009 SvREFCNT_dec_NN (a);
4010 SvREFCNT_dec_NN (b);
4011
4012 for (; i <= AvFILLp (swap_sv) - 2; i++)
4013 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4014
4015 AvFILLp (swap_sv) -= 2;
4016
4017 goto removed;
4018 }
4019 }
4020
4021 av_push (swap_sv, SvREFCNT_inc_NN (sva));
4022 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4023
4024 removed:
4025
4026 if (current == coro)
4027 SWAP_SVS_ENTER (current);
4028}
4029
3122 4030
3123MODULE = Coro::State PACKAGE = Coro 4031MODULE = Coro::State PACKAGE = Coro
3124 4032
3125BOOT: 4033BOOT:
3126{ 4034{
3127 int i; 4035 if (SVt_LAST > 32)
4036 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
3128 4037
3129 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4038 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3130 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4039 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3131 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD); 4040 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3132 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3133 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); 4041 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3134 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 4042 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3135 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); 4043 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3136 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); 4044 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3137 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); 4045 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3138 4046
3139 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 4047 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3140 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 4048 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3141 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); 4049 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3142 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new); 4050 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3143 4051
3144 coro_stash = gv_stashpv ("Coro", TRUE); 4052 coro_stash = gv_stashpv ("Coro", TRUE);
3145 4053
3146 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4054 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3147 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4055 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3148 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4056 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
3149 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4057 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
3150 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4058 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
3151 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4059 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
3152
3153 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
3154 coro_ready[i] = newAV ();
3155 4060
3156 { 4061 {
3157 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4062 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
3158 4063
3159 coroapi.schedule = api_schedule; 4064 coroapi.schedule = api_schedule;
… …
3163 coroapi.ready = api_ready; 4068 coroapi.ready = api_ready;
3164 coroapi.is_ready = api_is_ready; 4069 coroapi.is_ready = api_is_ready;
3165 coroapi.nready = coro_nready; 4070 coroapi.nready = coro_nready;
3166 coroapi.current = coro_current; 4071 coroapi.current = coro_current;
3167 4072
4073 coroapi.enterleave_hook = api_enterleave_hook;
4074 coroapi.enterleave_unhook = api_enterleave_unhook;
4075 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4076
3168 /*GCoroAPI = &coroapi;*/ 4077 /*GCoroAPI = &coroapi;*/
3169 sv_setiv (sv, (IV)&coroapi); 4078 sv_setiv (sv, (IV)&coroapi);
3170 SvREADONLY_on (sv); 4079 SvREADONLY_on (sv);
3171 } 4080 }
3172} 4081}
3173 4082
4083SV *
4084async (...)
4085 PROTOTYPE: &@
4086 CODE:
4087 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4088 api_ready (aTHX_ RETVAL);
4089 OUTPUT:
4090 RETVAL
4091
4092void
4093_destroy (Coro::State coro)
4094 CODE:
4095 /* used by the manager thread */
4096 coro_state_destroy (aTHX_ coro);
4097
4098void
4099on_destroy (Coro::State coro, SV *cb)
4100 CODE:
4101 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4102
4103void
4104join (...)
4105 CODE:
4106 CORO_EXECUTE_SLF_XS (slf_init_join);
4107
3174void 4108void
3175terminate (...) 4109terminate (...)
3176 CODE: 4110 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_terminate); 4111 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3178 4112
3179void 4113void
4114cancel (...)
4115 CODE:
4116 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4117
4118int
4119safe_cancel (Coro::State self, ...)
4120 C_ARGS: aTHX_ self, &ST (1), items - 1
4121
4122void
3180schedule (...) 4123schedule (...)
3181 CODE: 4124 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4125 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3183 4126
3184void 4127void
… …
3200cede_notself (...) 4143cede_notself (...)
3201 CODE: 4144 CODE:
3202 CORO_EXECUTE_SLF_XS (slf_init_cede_notself); 4145 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3203 4146
3204void 4147void
3205_cancel (Coro::State self)
3206 CODE:
3207 coro_state_destroy (aTHX_ self);
3208 coro_call_on_destroy (aTHX_ self);
3209
3210void
3211_set_current (SV *current) 4148_set_current (SV *current)
3212 PROTOTYPE: $ 4149 PROTOTYPE: $
3213 CODE: 4150 CODE:
3214 SvREFCNT_dec (SvRV (coro_current)); 4151 SvREFCNT_dec_NN (SvRV (coro_current));
3215 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4152 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3216 4153
3217void 4154void
3218_set_readyhook (SV *hook) 4155_set_readyhook (SV *hook)
3219 PROTOTYPE: $ 4156 PROTOTYPE: $
3220 CODE: 4157 CODE:
3221 SvREFCNT_dec (coro_readyhook); 4158 SvREFCNT_dec (coro_readyhook);
4159 SvGETMAGIC (hook);
4160 if (SvOK (hook))
4161 {
3222 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4162 coro_readyhook = newSVsv (hook);
4163 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4164 }
4165 else
4166 {
4167 coro_readyhook = 0;
4168 CORO_READYHOOK = 0;
4169 }
3223 4170
3224int 4171int
3225prio (Coro::State coro, int newprio = 0) 4172prio (Coro::State coro, int newprio = 0)
3226 PROTOTYPE: $;$ 4173 PROTOTYPE: $;$
3227 ALIAS: 4174 ALIAS:
… …
3233 if (items > 1) 4180 if (items > 1)
3234 { 4181 {
3235 if (ix) 4182 if (ix)
3236 newprio = coro->prio - newprio; 4183 newprio = coro->prio - newprio;
3237 4184
3238 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4185 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3239 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4186 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3240 4187
3241 coro->prio = newprio; 4188 coro->prio = newprio;
3242 } 4189 }
3243} 4190}
3244 OUTPUT: 4191 OUTPUT:
… …
3259 RETVAL = coro_nready; 4206 RETVAL = coro_nready;
3260 OUTPUT: 4207 OUTPUT:
3261 RETVAL 4208 RETVAL
3262 4209
3263void 4210void
4211suspend (Coro::State self)
4212 PROTOTYPE: $
4213 CODE:
4214 self->flags |= CF_SUSPENDED;
4215
4216void
4217resume (Coro::State self)
4218 PROTOTYPE: $
4219 CODE:
4220 self->flags &= ~CF_SUSPENDED;
4221
4222void
3264_pool_handler (...) 4223_pool_handler (...)
3265 CODE: 4224 CODE:
3266 CORO_EXECUTE_SLF_XS (slf_init_pool_handler); 4225 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3267 4226
3268void 4227void
… …
3279 for (i = 1; i < items; ++i) 4238 for (i = 1; i < items; ++i)
3280 av_push (av, SvREFCNT_inc_NN (ST (i))); 4239 av_push (av, SvREFCNT_inc_NN (ST (i)));
3281 4240
3282 if ((SV *)hv == &PL_sv_undef) 4241 if ((SV *)hv == &PL_sv_undef)
3283 { 4242 {
3284 PUSHMARK (SP); 4243 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3285 EXTEND (SP, 2);
3286 PUSHs (sv_Coro);
3287 PUSHs ((SV *)cv_pool_handler);
3288 PUTBACK;
3289 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3290 SPAGAIN;
3291
3292 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); 4244 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
4245 SvREFCNT_dec_NN (sv);
3293 } 4246 }
3294 4247
3295 { 4248 {
3296 struct coro *coro = SvSTATE_hv (hv); 4249 struct coro *coro = SvSTATE_hv (hv);
3297 4250
… …
3304 api_ready (aTHX_ (SV *)hv); 4257 api_ready (aTHX_ (SV *)hv);
3305 4258
3306 if (GIMME_V != G_VOID) 4259 if (GIMME_V != G_VOID)
3307 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); 4260 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3308 else 4261 else
3309 SvREFCNT_dec (hv); 4262 SvREFCNT_dec_NN (hv);
3310} 4263}
3311 4264
3312SV * 4265SV *
3313rouse_cb () 4266rouse_cb ()
3314 PROTOTYPE: 4267 PROTOTYPE:
… …
3321rouse_wait (...) 4274rouse_wait (...)
3322 PROTOTYPE: ;$ 4275 PROTOTYPE: ;$
3323 PPCODE: 4276 PPCODE:
3324 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4277 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3325 4278
4279void
4280on_enter (SV *block)
4281 ALIAS:
4282 on_leave = 1
4283 PROTOTYPE: &
4284 CODE:
4285{
4286 struct coro *coro = SvSTATE_current;
4287 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4288
4289 block = s_get_cv_croak (block);
4290
4291 if (!*avp)
4292 *avp = newAV ();
4293
4294 av_push (*avp, SvREFCNT_inc (block));
4295
4296 if (!ix)
4297 on_enterleave_call (aTHX_ block);
4298
4299 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4300 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4301 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4302}
4303
3326 4304
3327MODULE = Coro::State PACKAGE = PerlIO::cede 4305MODULE = Coro::State PACKAGE = PerlIO::cede
3328 4306
3329BOOT: 4307BOOT:
3330 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4308 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3333MODULE = Coro::State PACKAGE = Coro::Semaphore 4311MODULE = Coro::State PACKAGE = Coro::Semaphore
3334 4312
3335SV * 4313SV *
3336new (SV *klass, SV *count = 0) 4314new (SV *klass, SV *count = 0)
3337 CODE: 4315 CODE:
4316{
4317 int semcnt = 1;
4318
4319 if (count)
4320 {
4321 SvGETMAGIC (count);
4322
4323 if (SvOK (count))
4324 semcnt = SvIV (count);
4325 }
4326
3338 RETVAL = sv_bless ( 4327 RETVAL = sv_bless (
3339 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4328 coro_waitarray_new (aTHX_ semcnt),
3340 GvSTASH (CvGV (cv)) 4329 GvSTASH (CvGV (cv))
3341 ); 4330 );
4331}
3342 OUTPUT: 4332 OUTPUT:
3343 RETVAL 4333 RETVAL
3344 4334
3345# helper for Coro::Channel 4335# helper for Coro::Channel and others
3346SV * 4336SV *
3347_alloc (int count) 4337_alloc (int count)
3348 CODE: 4338 CODE:
3349 RETVAL = coro_waitarray_new (aTHX_ count); 4339 RETVAL = coro_waitarray_new (aTHX_ count);
3350 OUTPUT: 4340 OUTPUT:
… …
3356 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4346 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3357 OUTPUT: 4347 OUTPUT:
3358 RETVAL 4348 RETVAL
3359 4349
3360void 4350void
3361up (SV *self, int adjust = 1) 4351up (SV *self)
3362 ALIAS:
3363 adjust = 1
3364 CODE: 4352 CODE:
4353 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
4354
4355void
4356adjust (SV *self, int adjust)
4357 CODE:
3365 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4358 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
3366 4359
3367void 4360void
3368down (...) 4361down (...)
3369 CODE: 4362 CODE:
3370 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4363 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
… …
3392 XSRETURN_NO; 4385 XSRETURN_NO;
3393} 4386}
3394 4387
3395void 4388void
3396waiters (SV *self) 4389waiters (SV *self)
3397 PPCODE: 4390 PPCODE:
3398{ 4391{
3399 AV *av = (AV *)SvRV (self); 4392 AV *av = (AV *)SvRV (self);
3400 int wcount = AvFILLp (av) + 1 - 1; 4393 int wcount = AvFILLp (av) + 1 - 1;
3401 4394
3402 if (GIMME_V == G_SCALAR) 4395 if (GIMME_V == G_SCALAR)
… …
3408 for (i = 1; i <= wcount; ++i) 4401 for (i = 1; i <= wcount; ++i)
3409 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4402 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3410 } 4403 }
3411} 4404}
3412 4405
4406MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4407
4408void
4409_may_delete (SV *sem, int count, unsigned int extra_refs)
4410 PPCODE:
4411{
4412 AV *av = (AV *)SvRV (sem);
4413
4414 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4415 && AvFILLp (av) == 0 /* no waiters, just count */
4416 && SvIV (AvARRAY (av)[0]) == count)
4417 XSRETURN_YES;
4418
4419 XSRETURN_NO;
4420}
4421
3413MODULE = Coro::State PACKAGE = Coro::Signal 4422MODULE = Coro::State PACKAGE = Coro::Signal
3414 4423
3415SV * 4424SV *
3416new (SV *klass) 4425new (SV *klass)
3417 CODE: 4426 CODE:
… …
3429 4438
3430void 4439void
3431broadcast (SV *self) 4440broadcast (SV *self)
3432 CODE: 4441 CODE:
3433{ 4442{
3434 AV *av = (AV *)SvRV (self); 4443 AV *av = (AV *)SvRV (self);
3435 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4444 coro_signal_wake (aTHX_ av, AvFILLp (av));
3436} 4445}
3437 4446
3438void 4447void
3439send (SV *self) 4448send (SV *self)
… …
3447 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4456 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3448} 4457}
3449 4458
3450IV 4459IV
3451awaited (SV *self) 4460awaited (SV *self)
3452 CODE: 4461 CODE:
3453 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4462 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3454 OUTPUT: 4463 OUTPUT:
3455 RETVAL 4464 RETVAL
3456 4465
3457 4466
… …
3462 4471
3463void 4472void
3464_schedule (...) 4473_schedule (...)
3465 CODE: 4474 CODE:
3466{ 4475{
3467 static int incede; 4476 static int incede;
3468 4477
3469 api_cede_notself (aTHX); 4478 api_cede_notself (aTHX);
3470 4479
3471 ++incede; 4480 ++incede;
3472 while (coro_nready >= incede && api_cede (aTHX)) 4481 while (coro_nready >= incede && api_cede (aTHX))
… …
3488 4497
3489void 4498void
3490_register (char *target, char *proto, SV *req) 4499_register (char *target, char *proto, SV *req)
3491 CODE: 4500 CODE:
3492{ 4501{
3493 CV *req_cv = coro_sv_2cv (aTHX_ req); 4502 SV *req_cv = s_get_cv_croak (req);
3494 /* newXSproto doesn't return the CV on 5.8 */ 4503 /* newXSproto doesn't return the CV on 5.8 */
3495 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4504 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3496 sv_setpv ((SV *)slf_cv, proto); 4505 sv_setpv ((SV *)slf_cv, proto);
3497 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4506 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3498} 4507}
3499 4508
4509MODULE = Coro::State PACKAGE = Coro::Select
4510
4511void
4512patch_pp_sselect ()
4513 CODE:
4514 if (!coro_old_pp_sselect)
4515 {
4516 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4517 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4518 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4519 }
4520
4521void
4522unpatch_pp_sselect ()
4523 CODE:
4524 if (coro_old_pp_sselect)
4525 {
4526 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4527 coro_old_pp_sselect = 0;
4528 }
4529
4530MODULE = Coro::State PACKAGE = Coro::Util
4531
4532void
4533_exit (int code)
4534 CODE:
4535 _exit (code);
4536
4537NV
4538time ()
4539 CODE:
4540 RETVAL = nvtime (aTHX);
4541 OUTPUT:
4542 RETVAL
4543
4544NV
4545gettimeofday ()
4546 PPCODE:
4547{
4548 UV tv [2];
4549 u2time (aTHX_ tv);
4550 EXTEND (SP, 2);
4551 PUSHs (sv_2mortal (newSVuv (tv [0])));
4552 PUSHs (sv_2mortal (newSVuv (tv [1])));
4553}
4554

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