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Comparing Coro/Coro/State.xs (file contents):
Revision 1.296 by root, Tue Nov 18 10:39:52 2008 UTC vs.
Revision 1.441 by root, Tue Mar 4 05:07:44 2014 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SVs_PADSTALE
28# define SVs_PADSTALE 0
29#endif
30
31#ifdef PadARRAY
32# define NEWPADAPI 1
33# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
34#else
35typedef AV PADNAMELIST;
36# if !PERL_VERSION_ATLEAST(5,8,0)
37typedef AV PADLIST;
38typedef AV PAD;
39# endif
40# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
41# define PadlistMAX(pl) AvFILLp (pl)
42# define PadlistNAMES(pl) (*PadlistARRAY (pl))
43# define PadARRAY AvARRAY
44# define PadMAX AvFILLp
45# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
46#endif
47
48/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
49/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
50#if PERL_VERSION_ATLEAST(5,19,0)
51# define SVt_BIND SVt_IV
52#endif
53
54#if defined(_WIN32)
55# undef HAS_GETTIMEOFDAY
18# undef setjmp 56# undef setjmp
19# undef longjmp 57# undef longjmp
20# undef _exit 58# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 59# define setjmp _setjmp /* deep magic */
22#else 60#else
23# include <inttypes.h> /* most portable stdint.h */ 61# include <inttypes.h> /* most portable stdint.h */
24#endif 62#endif
25 63
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 64/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 65static int cctx_max_idle = 4;
55 66
56#define PERL_VERSION_ATLEAST(a,b,c) \ 67#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 68# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD
111#endif
112
113#ifndef CORO_STACKGUARD
114# define CORO_STACKGUARD 0
115#endif 69#endif
116 70
117/* prefer perl internal functions over our own? */ 71/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 72#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 73# define CORO_PREFER_PERL_FUNCTIONS 0
… …
127#else 81#else
128# define dSTACKLEVEL volatile void *stacklevel 82# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 83# define STACKLEVEL ((void *)&stacklevel)
130#endif 84#endif
131 85
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 86#define IN_DESTRUCT PL_dirty
133
134#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
138#else
139# define attribute(x)
140# define expect(expr,value) (expr)
141# define INLINE static
142#endif
143
144#define expect_false(expr) expect ((expr) != 0, 0)
145#define expect_true(expr) expect ((expr) != 0, 1)
146
147#define NOINLINE attribute ((noinline))
148 87
149#include "CoroAPI.h" 88#include "CoroAPI.h"
89#define GCoroAPI (&coroapi) /* very sneaky */
150 90
151#ifdef USE_ITHREADS 91#ifdef USE_ITHREADS
152# if CORO_PTHREAD 92# if CORO_PTHREAD
153static void *coro_thx; 93static void *coro_thx;
154# endif 94# endif
155#endif 95#endif
156 96
97#ifdef __linux
98# include <time.h> /* for timespec */
99# include <syscall.h> /* for SYS_* */
100# ifdef SYS_clock_gettime
101# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
102# define CORO_CLOCK_MONOTONIC 1
103# define CORO_CLOCK_THREAD_CPUTIME_ID 3
104# endif
105#endif
106
157static double (*nvtime)(); /* so why doesn't it take void? */ 107static double (*nvtime)(); /* so why doesn't it take void? */
108static void (*u2time)(pTHX_ UV ret[2]);
158 109
159/* we hijack an hopefully unused CV flag for our purposes */ 110/* we hijack an hopefully unused CV flag for our purposes */
160#define CVf_SLF 0x4000 111#define CVf_SLF 0x4000
161static OP *pp_slf (pTHX); 112static OP *pp_slf (pTHX);
113static void slf_destroy (pTHX_ struct coro *coro);
162 114
163static U32 cctx_gen; 115static U32 cctx_gen;
164static size_t cctx_stacksize = CORO_STACKSIZE; 116static size_t cctx_stacksize = CORO_STACKSIZE;
165static struct CoroAPI coroapi; 117static struct CoroAPI coroapi;
166static AV *main_mainstack; /* used to differentiate between $main and others */ 118static AV *main_mainstack; /* used to differentiate between $main and others */
167static JMPENV *main_top_env; 119static JMPENV *main_top_env;
168static HV *coro_state_stash, *coro_stash; 120static HV *coro_state_stash, *coro_stash;
169static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 121static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
170 122
123static AV *av_destroy; /* destruction queue */
124static SV *sv_manager; /* the manager coro */
125static SV *sv_idle; /* $Coro::idle */
126
171static GV *irsgv; /* $/ */ 127static GV *irsgv; /* $/ */
172static GV *stdoutgv; /* *STDOUT */ 128static GV *stdoutgv; /* *STDOUT */
173static SV *rv_diehook; 129static SV *rv_diehook;
174static SV *rv_warnhook; 130static SV *rv_warnhook;
175static HV *hv_sig; /* %SIG */ 131static HV *hv_sig; /* %SIG */
176 132
177/* async_pool helper stuff */ 133/* async_pool helper stuff */
178static SV *sv_pool_rss; 134static SV *sv_pool_rss;
179static SV *sv_pool_size; 135static SV *sv_pool_size;
136static SV *sv_async_pool_idle; /* description string */
180static AV *av_async_pool; 137static AV *av_async_pool; /* idle pool */
138static SV *sv_Coro; /* class string */
139static CV *cv_pool_handler;
181 140
182/* Coro::AnyEvent */ 141/* Coro::AnyEvent */
183static SV *sv_activity; 142static SV *sv_activity;
184 143
144/* enable processtime/realtime profiling */
145static char enable_times;
146typedef U32 coro_ts[2];
147static coro_ts time_real, time_cpu;
148static char times_valid;
149
185static struct coro_cctx *cctx_first; 150static struct coro_cctx *cctx_first;
186static int cctx_count, cctx_idle; 151static int cctx_count, cctx_idle;
187 152
188enum { 153enum
154{
189 CC_MAPPED = 0x01, 155 CC_MAPPED = 0x01,
190 CC_NOREUSE = 0x02, /* throw this away after tracing */ 156 CC_NOREUSE = 0x02, /* throw this away after tracing */
191 CC_TRACE = 0x04, 157 CC_TRACE = 0x04,
192 CC_TRACE_SUB = 0x08, /* trace sub calls */ 158 CC_TRACE_SUB = 0x08, /* trace sub calls */
193 CC_TRACE_LINE = 0x10, /* trace each statement */ 159 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
198typedef struct coro_cctx 164typedef struct coro_cctx
199{ 165{
200 struct coro_cctx *next; 166 struct coro_cctx *next;
201 167
202 /* the stack */ 168 /* the stack */
203 void *sptr; 169 struct coro_stack stack;
204 size_t ssize;
205 170
206 /* cpu state */ 171 /* cpu state */
207 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 172 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
173#ifndef NDEBUG
208 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 174 JMPENV *idle_te; /* same as idle_sp, but for top_env */
175#endif
209 JMPENV *top_env; 176 JMPENV *top_env;
210 coro_context cctx; 177 coro_context cctx;
211 178
212 U32 gen; 179 U32 gen;
213#if CORO_USE_VALGRIND 180#if CORO_USE_VALGRIND
214 int valgrind_id; 181 int valgrind_id;
215#endif 182#endif
216 unsigned char flags; 183 unsigned char flags;
217} coro_cctx; 184} coro_cctx;
218 185
186static coro_cctx *cctx_current; /* the currently running cctx */
187
188/*****************************************************************************/
189
190static MGVTBL coro_state_vtbl;
191
219enum { 192enum
193{
220 CF_RUNNING = 0x0001, /* coroutine is running */ 194 CF_RUNNING = 0x0001, /* coroutine is running */
221 CF_READY = 0x0002, /* coroutine is ready */ 195 CF_READY = 0x0002, /* coroutine is ready */
222 CF_NEW = 0x0004, /* has never been switched to */ 196 CF_NEW = 0x0004, /* has never been switched to */
223 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 197 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
198 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
199 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
224}; 200};
225 201
226/* the structure where most of the perl state is stored, overlaid on the cxstack */ 202/* the structure where most of the perl state is stored, overlaid on the cxstack */
227typedef struct 203typedef struct
228{ 204{
229 SV *defsv;
230 AV *defav;
231 SV *errsv;
232 SV *irsgv;
233#define VAR(name,type) type name; 205 #define VARx(name,expr,type) type name;
234# include "state.h" 206 #include "state.h"
235#undef VAR
236} perl_slots; 207} perl_slots;
237 208
209/* how many context stack entries do we need for perl_slots */
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 210#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239 211
240/* this is a structure representing a perl-level coroutine */ 212/* this is a structure representing a perl-level coroutine */
241struct coro { 213struct coro
214{
242 /* the C coroutine allocated to this perl coroutine, if any */ 215 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 216 coro_cctx *cctx;
217
218 /* ready queue */
219 struct coro *next_ready;
244 220
245 /* state data */ 221 /* state data */
246 struct CoroSLF slf_frame; /* saved slf frame */ 222 struct CoroSLF slf_frame; /* saved slf frame */
247 AV *mainstack; 223 AV *mainstack;
248 perl_slots *slot; /* basically the saved sp */ 224 perl_slots *slot; /* basically the saved sp */
249 225
226 CV *startcv; /* the CV to execute */
250 AV *args; /* data associated with this coroutine (initial args) */ 227 AV *args; /* data associated with this coroutine (initial args) */
251 int refcnt; /* coroutines are refcounted, yes */
252 int flags; /* CF_ flags */ 228 int flags; /* CF_ flags */
253 HV *hv; /* the perl hash associated with this coro, if any */ 229 HV *hv; /* the perl hash associated with this coro, if any */
254 void (*on_destroy)(pTHX_ struct coro *coro);
255 230
256 /* statistics */ 231 /* statistics */
257 int usecount; /* number of transfers to this coro */ 232 int usecount; /* number of transfers to this coro */
258 233
259 /* coro process data */ 234 /* coro process data */
260 int prio; 235 int prio;
261 SV *throw; /* exception to be thrown */ 236 SV *except; /* exception to be thrown */
237 SV *rouse_cb; /* last rouse callback */
238 AV *on_destroy; /* callbacks or coros to notify on destroy */
239 AV *status; /* the exit status list */
262 240
263 /* async_pool */ 241 /* async_pool */
264 SV *saved_deffh; 242 SV *saved_deffh;
243 SV *invoke_cb;
244 AV *invoke_av;
245
246 /* on_enter/on_leave */
247 AV *on_enter;
248 AV *on_leave;
249
250 /* swap_sv */
251 AV *swap_sv;
252
253 /* times */
254 coro_ts t_cpu, t_real;
265 255
266 /* linked list */ 256 /* linked list */
267 struct coro *next, *prev; 257 struct coro *next, *prev;
268}; 258};
269 259
270typedef struct coro *Coro__State; 260typedef struct coro *Coro__State;
271typedef struct coro *Coro__State_or_hashref; 261typedef struct coro *Coro__State_or_hashref;
272 262
273/* the following variables are effectively part of the perl context */ 263/* the following variables are effectively part of the perl context */
274/* and get copied between struct coro and these variables */ 264/* and get copied between struct coro and these variables */
275/* the mainr easonw e don't support windows process emulation */ 265/* the main reason we don't support windows process emulation */
276static struct CoroSLF slf_frame; /* the current slf frame */ 266static struct CoroSLF slf_frame; /* the current slf frame */
277static SV *coro_throw;
278 267
279/** Coro ********************************************************************/ 268/** Coro ********************************************************************/
280 269
281#define PRIO_MAX 3 270#define CORO_PRIO_MAX 3
282#define PRIO_HIGH 1 271#define CORO_PRIO_HIGH 1
283#define PRIO_NORMAL 0 272#define CORO_PRIO_NORMAL 0
284#define PRIO_LOW -1 273#define CORO_PRIO_LOW -1
285#define PRIO_IDLE -3 274#define CORO_PRIO_IDLE -3
286#define PRIO_MIN -4 275#define CORO_PRIO_MIN -4
287 276
288/* for Coro.pm */ 277/* for Coro.pm */
289static SV *coro_current; 278static SV *coro_current;
290static SV *coro_readyhook; 279static SV *coro_readyhook;
291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 280static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
281static CV *cv_coro_run;
292static struct coro *coro_first; 282static struct coro *coro_first;
293#define coro_nready coroapi.nready 283#define coro_nready coroapi.nready
294 284
285/** JIT *********************************************************************/
286
287#if CORO_JIT
288 /* APPLE doesn't have mmap though */
289 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
290 #ifndef CORO_JIT_TYPE
291 #if ECB_AMD64 && CORO_JIT_UNIXY
292 #define CORO_JIT_TYPE "amd64-unix"
293 #elif __i386 && CORO_JIT_UNIXY
294 #define CORO_JIT_TYPE "x86-unix"
295 #endif
296 #endif
297#endif
298
299#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
300 #undef CORO_JIT
301#endif
302
303#if CORO_JIT
304 typedef void (*load_save_perl_slots_type)(perl_slots *);
305 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
306#endif
307
308/** Coro::Select ************************************************************/
309
310static OP *(*coro_old_pp_sselect) (pTHX);
311static SV *coro_select_select;
312
313/* horrible hack, but if it works... */
314static OP *
315coro_pp_sselect (pTHX)
316{
317 dSP;
318 PUSHMARK (SP - 4); /* fake argument list */
319 XPUSHs (coro_select_select);
320 PUTBACK;
321
322 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
323 PL_op->op_flags |= OPf_STACKED;
324 PL_op->op_private = 0;
325 return PL_ppaddr [OP_ENTERSUB](aTHX);
326}
327
328/** time stuff **************************************************************/
329
330#ifdef HAS_GETTIMEOFDAY
331
332ecb_inline void
333coro_u2time (pTHX_ UV ret[2])
334{
335 struct timeval tv;
336 gettimeofday (&tv, 0);
337
338 ret [0] = tv.tv_sec;
339 ret [1] = tv.tv_usec;
340}
341
342ecb_inline double
343coro_nvtime (void)
344{
345 struct timeval tv;
346 gettimeofday (&tv, 0);
347
348 return tv.tv_sec + tv.tv_usec * 1e-6;
349}
350
351ecb_inline void
352time_init (pTHX)
353{
354 nvtime = coro_nvtime;
355 u2time = coro_u2time;
356}
357
358#else
359
360ecb_inline void
361time_init (pTHX)
362{
363 SV **svp;
364
365 require_pv ("Time/HiRes.pm");
366
367 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
368
369 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
370 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
371
372 nvtime = INT2PTR (double (*)(), SvIV (*svp));
373
374 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
375 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
376}
377
378#endif
379
295/** lowlevel stuff **********************************************************/ 380/** lowlevel stuff **********************************************************/
296 381
297static SV * 382static SV * ecb_noinline
298coro_get_sv (pTHX_ const char *name, int create) 383coro_get_sv (pTHX_ const char *name, int create)
299{ 384{
300#if PERL_VERSION_ATLEAST (5,10,0) 385#if PERL_VERSION_ATLEAST (5,10,0)
301 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 386 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
302 get_sv (name, create); 387 get_sv (name, create);
303#endif 388#endif
304 return get_sv (name, create); 389 return get_sv (name, create);
305} 390}
306 391
307static AV * 392static AV * ecb_noinline
308coro_get_av (pTHX_ const char *name, int create) 393coro_get_av (pTHX_ const char *name, int create)
309{ 394{
310#if PERL_VERSION_ATLEAST (5,10,0) 395#if PERL_VERSION_ATLEAST (5,10,0)
311 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 396 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
312 get_av (name, create); 397 get_av (name, create);
313#endif 398#endif
314 return get_av (name, create); 399 return get_av (name, create);
315} 400}
316 401
317static HV * 402static HV * ecb_noinline
318coro_get_hv (pTHX_ const char *name, int create) 403coro_get_hv (pTHX_ const char *name, int create)
319{ 404{
320#if PERL_VERSION_ATLEAST (5,10,0) 405#if PERL_VERSION_ATLEAST (5,10,0)
321 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 406 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
322 get_hv (name, create); 407 get_hv (name, create);
323#endif 408#endif
324 return get_hv (name, create); 409 return get_hv (name, create);
325} 410}
326 411
327static AV * 412ecb_inline void
413coro_times_update (void)
414{
415#ifdef coro_clock_gettime
416 struct timespec ts;
417
418 ts.tv_sec = ts.tv_nsec = 0;
419 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
420 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
421
422 ts.tv_sec = ts.tv_nsec = 0;
423 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
424 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
425#else
426 dTHX;
427 UV tv[2];
428
429 u2time (aTHX_ tv);
430 time_real [0] = tv [0];
431 time_real [1] = tv [1] * 1000;
432#endif
433}
434
435ecb_inline void
436coro_times_add (struct coro *c)
437{
438 c->t_real [1] += time_real [1];
439 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
440 c->t_real [0] += time_real [0];
441
442 c->t_cpu [1] += time_cpu [1];
443 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
444 c->t_cpu [0] += time_cpu [0];
445}
446
447ecb_inline void
448coro_times_sub (struct coro *c)
449{
450 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
451 c->t_real [1] -= time_real [1];
452 c->t_real [0] -= time_real [0];
453
454 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
455 c->t_cpu [1] -= time_cpu [1];
456 c->t_cpu [0] -= time_cpu [0];
457}
458
459/*****************************************************************************/
460/* magic glue */
461
462#define CORO_MAGIC_type_cv 26
463#define CORO_MAGIC_type_state PERL_MAGIC_ext
464
465#define CORO_MAGIC_NN(sv, type) \
466 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
467 ? SvMAGIC (sv) \
468 : mg_find (sv, type))
469
470#define CORO_MAGIC(sv, type) \
471 (ecb_expect_true (SvMAGIC (sv)) \
472 ? CORO_MAGIC_NN (sv, type) \
473 : 0)
474
475#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
476#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
477
478ecb_inline MAGIC *
479SvSTATEhv_p (pTHX_ SV *coro)
480{
481 MAGIC *mg;
482
483 if (ecb_expect_true (
484 SvTYPE (coro) == SVt_PVHV
485 && (mg = CORO_MAGIC_state (coro))
486 && mg->mg_virtual == &coro_state_vtbl
487 ))
488 return mg;
489
490 return 0;
491}
492
493ecb_inline struct coro *
494SvSTATE_ (pTHX_ SV *coro)
495{
496 MAGIC *mg;
497
498 if (SvROK (coro))
499 coro = SvRV (coro);
500
501 mg = SvSTATEhv_p (aTHX_ coro);
502 if (!mg)
503 croak ("Coro::State object required");
504
505 return (struct coro *)mg->mg_ptr;
506}
507
508#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
509
510/* faster than SvSTATE, but expects a coroutine hv */
511#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
512#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
513
514/*****************************************************************************/
515/* padlist management and caching */
516
517ecb_inline PADLIST *
328coro_clone_padlist (pTHX_ CV *cv) 518coro_derive_padlist (pTHX_ CV *cv)
329{ 519{
330 AV *padlist = CvPADLIST (cv); 520 PADLIST *padlist = CvPADLIST (cv);
331 AV *newpadlist, *newpad; 521 PADLIST *newpadlist;
522 PAD *newpad;
523 PADOFFSET off = PadlistMAX (padlist) + 1;
332 524
333 newpadlist = newAV (); 525#if NEWPADAPI
526
527 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
528 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
529 while (!PadlistARRAY (padlist)[off - 1])
530 --off;
531
532 Perl_pad_push (aTHX_ padlist, off);
533
534 newpad = PadlistARRAY (padlist)[off];
535 PadlistARRAY (padlist)[off] = 0;
536
537#else
538
539#if PERL_VERSION_ATLEAST (5,10,0)
540 Perl_pad_push (aTHX_ padlist, off);
541#else
542 Perl_pad_push (aTHX_ padlist, off, 1);
543#endif
544
545 newpad = PadlistARRAY (padlist)[off];
546 PadlistMAX (padlist) = off - 1;
547
548#endif
549
550 newPADLIST (newpadlist);
551#if !PERL_VERSION_ATLEAST(5,15,3)
552 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
334 AvREAL_off (newpadlist); 553 AvREAL_off (newpadlist);
335#if PERL_VERSION_ATLEAST (5,10,0)
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
337#else
338 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
339#endif 554#endif
340 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
341 --AvFILLp (padlist);
342 555
343 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 556 /* Already extended to 2 elements by newPADLIST. */
344 av_store (newpadlist, 1, (SV *)newpad); 557 PadlistMAX (newpadlist) = 1;
558 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
559 PadlistARRAY (newpadlist)[1] = newpad;
345 560
346 return newpadlist; 561 return newpadlist;
347} 562}
348 563
349static void 564ecb_inline void
350free_padlist (pTHX_ AV *padlist) 565free_padlist (pTHX_ PADLIST *padlist)
351{ 566{
352 /* may be during global destruction */ 567 /* may be during global destruction */
353 if (SvREFCNT (padlist)) 568 if (!IN_DESTRUCT)
354 { 569 {
355 I32 i = AvFILLp (padlist); 570 I32 i = PadlistMAX (padlist);
356 while (i >= 0) 571
572 while (i > 0) /* special-case index 0 */
357 { 573 {
358 SV **svp = av_fetch (padlist, i--, FALSE); 574 /* we try to be extra-careful here */
575 PAD *pad = PadlistARRAY (padlist)[i--];
576
359 if (svp) 577 if (pad)
360 { 578 {
361 SV *sv; 579 I32 j = PadMAX (pad);
362 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 580
581 while (j >= 0)
363 SvREFCNT_dec (sv); 582 SvREFCNT_dec (PadARRAY (pad)[j--]);
364 583
584 PadMAX (pad) = -1;
365 SvREFCNT_dec (*svp); 585 SvREFCNT_dec (pad);
366 } 586 }
367 } 587 }
368 588
589 SvREFCNT_dec (PadlistNAMES (padlist));
590
591#if NEWPADAPI
592 Safefree (PadlistARRAY (padlist));
593 Safefree (padlist);
594#else
595 AvFILLp (padlist) = -1;
596 AvREAL_off (padlist);
369 SvREFCNT_dec ((SV*)padlist); 597 SvREFCNT_dec ((SV*)padlist);
598#endif
370 } 599 }
371} 600}
372 601
373static int 602static int
374coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 603coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
375{ 604{
376 AV *padlist; 605 PADLIST *padlist;
377 AV *av = (AV *)mg->mg_obj; 606 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
607 size_t len = *(size_t *)mg->mg_ptr;
378 608
379 /* casting is fun. */ 609 /* perl manages to free our internal AV and _then_ call us */
380 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 610 if (IN_DESTRUCT)
611 return 0;
612
613 while (len--)
381 free_padlist (aTHX_ padlist); 614 free_padlist (aTHX_ padlists[len]);
382
383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
384 615
385 return 0; 616 return 0;
386} 617}
387
388#define CORO_MAGIC_type_cv 26
389#define CORO_MAGIC_type_state PERL_MAGIC_ext
390 618
391static MGVTBL coro_cv_vtbl = { 619static MGVTBL coro_cv_vtbl = {
392 0, 0, 0, 0, 620 0, 0, 0, 0,
393 coro_cv_free 621 coro_cv_free
394}; 622};
395 623
396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
398 ? SvMAGIC (sv) \
399 : mg_find (sv, type))
400
401#define CORO_MAGIC(sv, type) \
402 (expect_true (SvMAGIC (sv)) \
403 ? CORO_MAGIC_NN (sv, type) \
404 : 0)
405
406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
408
409INLINE struct coro *
410SvSTATE_ (pTHX_ SV *coro)
411{
412 HV *stash;
413 MAGIC *mg;
414
415 if (SvROK (coro))
416 coro = SvRV (coro);
417
418 if (expect_false (SvTYPE (coro) != SVt_PVHV))
419 croak ("Coro::State object required");
420
421 stash = SvSTASH (coro);
422 if (expect_false (stash != coro_stash && stash != coro_state_stash))
423 {
424 /* very slow, but rare, check */
425 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
426 croak ("Coro::State object required");
427 }
428
429 mg = CORO_MAGIC_state (coro);
430 return (struct coro *)mg->mg_ptr;
431}
432
433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
438
439/* the next two functions merely cache the padlists */ 624/* the next two functions merely cache the padlists */
440static void 625ecb_inline void
441get_padlist (pTHX_ CV *cv) 626get_padlist (pTHX_ CV *cv)
442{ 627{
443 MAGIC *mg = CORO_MAGIC_cv (cv); 628 MAGIC *mg = CORO_MAGIC_cv (cv);
444 AV *av; 629 size_t *lenp;
445 630
446 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 631 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
447 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 632 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
448 else 633 else
449 { 634 {
450#if CORO_PREFER_PERL_FUNCTIONS 635#if CORO_PREFER_PERL_FUNCTIONS
451 /* this is probably cleaner? but also slower! */ 636 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */ 637 /* in practise, it seems to be less stable */
453 CV *cp = Perl_cv_clone (cv); 638 CV *cp = Perl_cv_clone (aTHX_ cv);
454 CvPADLIST (cv) = CvPADLIST (cp); 639 CvPADLIST (cv) = CvPADLIST (cp);
455 CvPADLIST (cp) = 0; 640 CvPADLIST (cp) = 0;
456 SvREFCNT_dec (cp); 641 SvREFCNT_dec (cp);
457#else 642#else
458 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 643 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
459#endif 644#endif
460 } 645 }
461} 646}
462 647
463static void 648ecb_inline void
464put_padlist (pTHX_ CV *cv) 649put_padlist (pTHX_ CV *cv)
465{ 650{
466 MAGIC *mg = CORO_MAGIC_cv (cv); 651 MAGIC *mg = CORO_MAGIC_cv (cv);
467 AV *av;
468 652
469 if (expect_false (!mg)) 653 if (ecb_expect_false (!mg))
654 {
470 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 655 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
656 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
657 mg->mg_len = 1; /* so mg_free frees mg_ptr */
658 }
659 else
660 Renew (mg->mg_ptr,
661 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
662 char);
471 663
472 av = (AV *)mg->mg_obj; 664 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
473
474 if (expect_false (AvFILLp (av) >= AvMAX (av)))
475 av_extend (av, AvMAX (av) + 1);
476
477 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
478} 665}
479 666
480/** load & save, init *******************************************************/ 667/** load & save, init *******************************************************/
668
669ecb_inline void
670swap_sv (SV *a, SV *b)
671{
672 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
673 SV tmp;
674
675 /* swap sv_any */
676 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
677
678 /* swap sv_flags */
679 SvFLAGS (&tmp) = SvFLAGS (a);
680 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
681 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
682
683#if PERL_VERSION_ATLEAST (5,10,0)
684 /* perl 5.10 and later complicates this _quite_ a bit, but it also
685 * is much faster, so no quarrels here. alternatively, we could
686 * sv_upgrade to avoid this.
687 */
688 {
689 /* swap sv_u */
690 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
691
692 /* if SvANY points to the head, we need to adjust the pointers,
693 * as the pointer for a still points to b, and maybe vice versa.
694 */
695 #define svany_in_head(type) \
696 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
697
698 if (svany_in_head (SvTYPE (a)))
699 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
700
701 if (svany_in_head (SvTYPE (b)))
702 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
703 }
704#endif
705}
706
707/* swap sv heads, at least logically */
708static void
709swap_svs (pTHX_ Coro__State c)
710{
711 int i;
712
713 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
714 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
715}
716
717#define SWAP_SVS(coro) \
718 if (ecb_expect_false ((coro)->swap_sv)) \
719 swap_svs (aTHX_ (coro))
720
721static void
722on_enterleave_call (pTHX_ SV *cb);
481 723
482static void 724static void
483load_perl (pTHX_ Coro__State c) 725load_perl (pTHX_ Coro__State c)
484{ 726{
485 perl_slots *slot = c->slot; 727 perl_slots *slot = c->slot;
486 c->slot = 0; 728 c->slot = 0;
487 729
488 PL_mainstack = c->mainstack; 730 PL_mainstack = c->mainstack;
489 731
490 GvSV (PL_defgv) = slot->defsv; 732#if CORO_JIT
491 GvAV (PL_defgv) = slot->defav; 733 load_perl_slots (slot);
492 GvSV (PL_errgv) = slot->errsv; 734#else
493 GvSV (irsgv) = slot->irsgv;
494
495 #define VAR(name,type) PL_ ## name = slot->name; 735 #define VARx(name,expr,type) expr = slot->name;
496 # include "state.h" 736 #include "state.h"
497 #undef VAR 737#endif
498 738
499 { 739 {
500 dSP; 740 dSP;
501 741
502 CV *cv; 742 CV *cv;
503 743
504 /* now do the ugly restore mess */ 744 /* now do the ugly restore mess */
505 while (expect_true (cv = (CV *)POPs)) 745 while (ecb_expect_true (cv = (CV *)POPs))
506 { 746 {
507 put_padlist (aTHX_ cv); /* mark this padlist as available */ 747 put_padlist (aTHX_ cv); /* mark this padlist as available */
508 CvDEPTH (cv) = PTR2IV (POPs); 748 CvDEPTH (cv) = PTR2IV (POPs);
509 CvPADLIST (cv) = (AV *)POPs; 749 CvPADLIST (cv) = (PADLIST *)POPs;
510 } 750 }
511 751
512 PUTBACK; 752 PUTBACK;
513 } 753 }
514 754
515 slf_frame = c->slf_frame; 755 slf_frame = c->slf_frame;
516 coro_throw = c->throw; 756 CORO_THROW = c->except;
757
758 if (ecb_expect_false (enable_times))
759 {
760 if (ecb_expect_false (!times_valid))
761 coro_times_update ();
762
763 coro_times_sub (c);
764 }
765
766 if (ecb_expect_false (c->on_enter))
767 {
768 int i;
769
770 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
771 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
772 }
773
774 SWAP_SVS (c);
517} 775}
518 776
519static void 777static void
520save_perl (pTHX_ Coro__State c) 778save_perl (pTHX_ Coro__State c)
521{ 779{
522 c->throw = coro_throw; 780 SWAP_SVS (c);
781
782 if (ecb_expect_false (c->on_leave))
783 {
784 int i;
785
786 for (i = AvFILLp (c->on_leave); i >= 0; --i)
787 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
788 }
789
790 times_valid = 0;
791
792 if (ecb_expect_false (enable_times))
793 {
794 coro_times_update (); times_valid = 1;
795 coro_times_add (c);
796 }
797
798 c->except = CORO_THROW;
523 c->slf_frame = slf_frame; 799 c->slf_frame = slf_frame;
524 800
525 { 801 {
526 dSP; 802 dSP;
527 I32 cxix = cxstack_ix; 803 I32 cxix = cxstack_ix;
… …
535 811
536 XPUSHs (Nullsv); 812 XPUSHs (Nullsv);
537 /* this loop was inspired by pp_caller */ 813 /* this loop was inspired by pp_caller */
538 for (;;) 814 for (;;)
539 { 815 {
540 while (expect_true (cxix >= 0)) 816 while (ecb_expect_true (cxix >= 0))
541 { 817 {
542 PERL_CONTEXT *cx = &ccstk[cxix--]; 818 PERL_CONTEXT *cx = &ccstk[cxix--];
543 819
544 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 820 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
545 { 821 {
546 CV *cv = cx->blk_sub.cv; 822 CV *cv = cx->blk_sub.cv;
547 823
548 if (expect_true (CvDEPTH (cv))) 824 if (ecb_expect_true (CvDEPTH (cv)))
549 { 825 {
550 EXTEND (SP, 3); 826 EXTEND (SP, 3);
551 PUSHs ((SV *)CvPADLIST (cv)); 827 PUSHs ((SV *)CvPADLIST (cv));
552 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 828 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
553 PUSHs ((SV *)cv); 829 PUSHs ((SV *)cv);
… …
556 get_padlist (aTHX_ cv); 832 get_padlist (aTHX_ cv);
557 } 833 }
558 } 834 }
559 } 835 }
560 836
561 if (expect_true (top_si->si_type == PERLSI_MAIN)) 837 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
562 break; 838 break;
563 839
564 top_si = top_si->si_prev; 840 top_si = top_si->si_prev;
565 ccstk = top_si->si_cxstack; 841 ccstk = top_si->si_cxstack;
566 cxix = top_si->si_cxix; 842 cxix = top_si->si_cxix;
… …
568 844
569 PUTBACK; 845 PUTBACK;
570 } 846 }
571 847
572 /* allocate some space on the context stack for our purposes */ 848 /* allocate some space on the context stack for our purposes */
573 /* we manually unroll here, as usually 2 slots is enough */ 849 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
574 if (SLOT_COUNT >= 1) CXINC;
575 if (SLOT_COUNT >= 2) CXINC;
576 if (SLOT_COUNT >= 3) CXINC;
577 { 850 {
578 int i; 851 unsigned int i;
852
579 for (i = 3; i < SLOT_COUNT; ++i) 853 for (i = 0; i < SLOT_COUNT; ++i)
580 CXINC; 854 CXINC;
581 } 855
582 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 856 cxstack_ix -= SLOT_COUNT; /* undo allocation */
857 }
583 858
584 c->mainstack = PL_mainstack; 859 c->mainstack = PL_mainstack;
585 860
586 { 861 {
587 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 862 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
588 863
589 slot->defav = GvAV (PL_defgv); 864#if CORO_JIT
590 slot->defsv = DEFSV; 865 save_perl_slots (slot);
591 slot->errsv = ERRSV; 866#else
592 slot->irsgv = GvSV (irsgv);
593
594 #define VAR(name,type) slot->name = PL_ ## name; 867 #define VARx(name,expr,type) slot->name = expr;
595 # include "state.h" 868 #include "state.h"
596 #undef VAR 869#endif
597 } 870 }
598} 871}
599 872
600/* 873/*
601 * allocate various perl stacks. This is almost an exact copy 874 * allocate various perl stacks. This is almost an exact copy
602 * of perl.c:init_stacks, except that it uses less memory 875 * of perl.c:init_stacks, except that it uses less memory
603 * on the (sometimes correct) assumption that coroutines do 876 * on the (sometimes correct) assumption that coroutines do
604 * not usually need a lot of stackspace. 877 * not usually need a lot of stackspace.
605 */ 878 */
606#if CORO_PREFER_PERL_FUNCTIONS 879#if CORO_PREFER_PERL_FUNCTIONS
607# define coro_init_stacks init_stacks 880# define coro_init_stacks(thx) init_stacks ()
608#else 881#else
609static void 882static void
610coro_init_stacks (pTHX) 883coro_init_stacks (pTHX)
611{ 884{
612 PL_curstackinfo = new_stackinfo(32, 8); 885 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
613 PL_curstackinfo->si_type = PERLSI_MAIN; 886 PL_curstackinfo->si_type = PERLSI_MAIN;
614 PL_curstack = PL_curstackinfo->si_stack; 887 PL_curstack = PL_curstackinfo->si_stack;
615 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 888 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
616 889
617 PL_stack_base = AvARRAY(PL_curstack); 890 PL_stack_base = AvARRAY(PL_curstack);
… …
632#endif 905#endif
633 906
634 New(54,PL_scopestack,8,I32); 907 New(54,PL_scopestack,8,I32);
635 PL_scopestack_ix = 0; 908 PL_scopestack_ix = 0;
636 PL_scopestack_max = 8; 909 PL_scopestack_max = 8;
910#if HAS_SCOPESTACK_NAME
911 New(54,PL_scopestack_name,8,const char*);
912#endif
637 913
638 New(54,PL_savestack,24,ANY); 914 New(54,PL_savestack,24,ANY);
639 PL_savestack_ix = 0; 915 PL_savestack_ix = 0;
640 PL_savestack_max = 24; 916 PL_savestack_max = 24;
641 917
… …
669 } 945 }
670 946
671 Safefree (PL_tmps_stack); 947 Safefree (PL_tmps_stack);
672 Safefree (PL_markstack); 948 Safefree (PL_markstack);
673 Safefree (PL_scopestack); 949 Safefree (PL_scopestack);
950#if HAS_SCOPESTACK_NAME
951 Safefree (PL_scopestack_name);
952#endif
674 Safefree (PL_savestack); 953 Safefree (PL_savestack);
675#if !PERL_VERSION_ATLEAST (5,10,0) 954#if !PERL_VERSION_ATLEAST (5,10,0)
676 Safefree (PL_retstack); 955 Safefree (PL_retstack);
677#endif 956#endif
678} 957}
679 958
959#define CORO_RSS \
960 rss += sizeof (SYM (curstackinfo)); \
961 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
962 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
963 rss += SYM (tmps_max) * sizeof (SV *); \
964 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
965 rss += SYM (scopestack_max) * sizeof (I32); \
966 rss += SYM (savestack_max) * sizeof (ANY);
967
680static size_t 968static size_t
681coro_rss (pTHX_ struct coro *coro) 969coro_rss (pTHX_ struct coro *coro)
682{ 970{
683 size_t rss = sizeof (*coro); 971 size_t rss = sizeof (*coro);
684 972
685 if (coro->mainstack) 973 if (coro->mainstack)
686 { 974 {
687 perl_slots tmp_slot;
688 perl_slots *slot;
689
690 if (coro->flags & CF_RUNNING) 975 if (coro->flags & CF_RUNNING)
691 { 976 {
692 slot = &tmp_slot; 977 #define SYM(sym) PL_ ## sym
693 978 CORO_RSS;
694 #define VAR(name,type) slot->name = PL_ ## name;
695 # include "state.h"
696 #undef VAR 979 #undef SYM
697 } 980 }
698 else 981 else
699 slot = coro->slot;
700
701 if (slot)
702 { 982 {
703 rss += sizeof (slot->curstackinfo); 983 #define SYM(sym) coro->slot->sym
704 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 984 CORO_RSS;
705 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 985 #undef SYM
706 rss += slot->tmps_max * sizeof (SV *);
707 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
708 rss += slot->scopestack_max * sizeof (I32);
709 rss += slot->savestack_max * sizeof (ANY);
710
711#if !PERL_VERSION_ATLEAST (5,10,0)
712 rss += slot->retstack_max * sizeof (OP *);
713#endif
714 } 986 }
715 } 987 }
716 988
717 return rss; 989 return rss;
718} 990}
… …
731#endif 1003#endif
732 1004
733/* 1005/*
734 * This overrides the default magic get method of %SIG elements. 1006 * This overrides the default magic get method of %SIG elements.
735 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1007 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
736 * and instead of tryign to save and restore the hash elements, we just provide 1008 * and instead of trying to save and restore the hash elements (extremely slow),
737 * readback here. 1009 * we just provide our own readback here.
738 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
739 * not expecting this to actually change the hook. This is a potential problem
740 * when a schedule happens then, but we ignore this.
741 */ 1010 */
742static int 1011static int ecb_cold
743coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1012coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
744{ 1013{
745 const char *s = MgPV_nolen_const (mg); 1014 const char *s = MgPV_nolen_const (mg);
746 1015
747 if (*s == '_') 1016 if (*s == '_')
748 { 1017 {
749 SV **svp = 0; 1018 SV **svp = 0;
750 1019
751 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1020 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
752 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1021 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
753 1022
754 if (svp) 1023 if (svp)
755 { 1024 {
756 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1025 SV *ssv;
1026
1027 if (!*svp)
1028 ssv = &PL_sv_undef;
1029 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1030 ssv = sv_2mortal (newRV_inc (*svp));
1031 else
1032 ssv = *svp;
1033
1034 sv_setsv (sv, ssv);
757 return 0; 1035 return 0;
758 } 1036 }
759 } 1037 }
760 1038
761 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1039 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
762} 1040}
763 1041
764static int 1042static int ecb_cold
765coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1043coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
766{ 1044{
767 const char *s = MgPV_nolen_const (mg); 1045 const char *s = MgPV_nolen_const (mg);
768 1046
769 if (*s == '_') 1047 if (*s == '_')
… …
783 } 1061 }
784 1062
785 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1063 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
786} 1064}
787 1065
788static int 1066static int ecb_cold
789coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1067coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
790{ 1068{
791 const char *s = MgPV_nolen_const (mg); 1069 const char *s = MgPV_nolen_const (mg);
792 1070
793 if (*s == '_') 1071 if (*s == '_')
… …
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1076 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799 1077
800 if (svp) 1078 if (svp)
801 { 1079 {
802 SV *old = *svp; 1080 SV *old = *svp;
803 *svp = newSVsv (sv); 1081 *svp = SvOK (sv) ? newSVsv (sv) : 0;
804 SvREFCNT_dec (old); 1082 SvREFCNT_dec (old);
805 return 0; 1083 return 0;
806 } 1084 }
807 } 1085 }
808 1086
… …
820slf_check_nop (pTHX_ struct CoroSLF *frame) 1098slf_check_nop (pTHX_ struct CoroSLF *frame)
821{ 1099{
822 return 0; 1100 return 0;
823} 1101}
824 1102
825static UNOP coro_setup_op; 1103static int
1104slf_check_repeat (pTHX_ struct CoroSLF *frame)
1105{
1106 return 1;
1107}
826 1108
827static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1109static UNOP init_perl_op;
1110
1111ecb_noinline static void /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 1112init_perl (pTHX_ struct coro *coro)
829{ 1113{
830 /* 1114 /*
831 * emulate part of the perl startup here. 1115 * emulate part of the perl startup here.
832 */ 1116 */
833 coro_init_stacks (aTHX); 1117 coro_init_stacks (aTHX);
834 1118
835 PL_runops = RUNOPS_DEFAULT; 1119 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 1120 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 1121 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 1122 PL_comppad = 0;
1123 PL_comppad_name = 0;
1124 PL_comppad_name_fill = 0;
1125 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 1126 PL_curpm = 0;
840 PL_curpad = 0; 1127 PL_curpad = 0;
841 PL_localizing = 0; 1128 PL_localizing = 0;
842 PL_dirty = 0;
843 PL_restartop = 0; 1129 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 1130#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 1131 PL_parser = 0;
846#endif 1132#endif
1133 PL_hints = 0;
847 1134
848 /* recreate the die/warn hooks */ 1135 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1136 PL_diehook = SvREFCNT_inc (rv_diehook);
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1137 PL_warnhook = SvREFCNT_inc (rv_warnhook);
851 1138
852 GvSV (PL_defgv) = newSV (0); 1139 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 1140 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 1141 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1142 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1143 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 1144 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1145 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 1146
859 { 1147 {
860 dSP; 1148 dSP;
861 UNOP myop; 1149 UNOP myop;
862 1150
863 Zero (&myop, 1, UNOP); 1151 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 1152 myop.op_next = Nullop;
1153 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 1154 myop.op_flags = OPf_WANT_VOID;
866 1155
867 PUSHMARK (SP); 1156 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1157 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 1158 PUTBACK;
870 PL_op = (OP *)&myop; 1159 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1160 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 1161 }
874 1162
875 /* this newly created coroutine might be run on an existing cctx which most 1163 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1164 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 1165 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1166 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1167 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1168 slf_frame.destroy = 0;
880 1169
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1170 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op; 1171 init_perl_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM; 1172 init_perl_op.op_type = OP_ENTERSUB;
884 coro_setup_op.op_ppaddr = pp_slf; 1173 init_perl_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */ 1174 /* no flags etc. required, as an init function won't be called */
886 1175
887 PL_op = (OP *)&coro_setup_op; 1176 PL_op = (OP *)&init_perl_op;
888 1177
889 /* copy throw, in case it was set before coro_setup */ 1178 /* copy throw, in case it was set before init_perl */
890 coro_throw = coro->throw; 1179 CORO_THROW = coro->except;
891}
892 1180
1181 SWAP_SVS (coro);
1182
1183 if (ecb_expect_false (enable_times))
1184 {
1185 coro_times_update ();
1186 coro_times_sub (coro);
1187 }
1188}
1189
893static void 1190static void
894coro_destruct (pTHX_ struct coro *coro) 1191coro_unwind_stacks (pTHX)
895{ 1192{
896 if (!IN_DESTRUCT) 1193 if (!IN_DESTRUCT)
897 { 1194 {
898 /* restore all saved variables and stuff */ 1195 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1196 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1204 POPSTACK_TO (PL_mainstack);
908 1205
909 /* unwind main stack */ 1206 /* unwind main stack */
910 dounwind (-1); 1207 dounwind (-1);
911 } 1208 }
1209}
912 1210
913 SvREFCNT_dec (GvSV (PL_defgv)); 1211static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1212destroy_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1213{
916 SvREFCNT_dec (PL_defoutgv); 1214 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1215
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 1216 {
1217 SV *old_current = SvRV (coro_current);
1218 struct coro *current = SvSTATE (old_current);
1219
1220 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1221
1222 save_perl (aTHX_ current);
1223
1224 /* this will cause transfer_check to croak on block*/
1225 SvRV_set (coro_current, (SV *)coro->hv);
1226
1227 load_perl (aTHX_ coro);
1228
1229 coro_unwind_stacks (aTHX);
1230
1231 /* restore swapped sv's */
1232 SWAP_SVS (coro);
1233
1234 coro_destruct_stacks (aTHX);
1235
1236 /* now save some sv's to be free'd later */
1237 svf [0] = GvSV (PL_defgv);
1238 svf [1] = (SV *)GvAV (PL_defgv);
1239 svf [2] = GvSV (PL_errgv);
1240 svf [3] = (SV *)PL_defoutgv;
1241 svf [4] = PL_rs;
1242 svf [5] = GvSV (irsgv);
1243 svf [6] = (SV *)GvHV (PL_hintgv);
1244 svf [7] = PL_diehook;
1245 svf [8] = PL_warnhook;
1246 assert (9 == sizeof (svf) / sizeof (*svf));
1247
1248 SvRV_set (coro_current, old_current);
1249
1250 load_perl (aTHX_ current);
1251 }
1252
1253 {
1254 unsigned int i;
1255
1256 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1257 SvREFCNT_dec (svf [i]);
1258
923 SvREFCNT_dec (coro->saved_deffh); 1259 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro_throw); 1260 SvREFCNT_dec (coro->rouse_cb);
925 1261 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1262 SvREFCNT_dec (coro->invoke_av);
1263 }
927} 1264}
928 1265
929INLINE void 1266ecb_inline void
930free_coro_mortal (pTHX) 1267free_coro_mortal (pTHX)
931{ 1268{
932 if (expect_true (coro_mortal)) 1269 if (ecb_expect_true (coro_mortal))
933 { 1270 {
934 SvREFCNT_dec (coro_mortal); 1271 SvREFCNT_dec ((SV *)coro_mortal);
935 coro_mortal = 0; 1272 coro_mortal = 0;
936 } 1273 }
937} 1274}
938 1275
939static int 1276static int
940runops_trace (pTHX) 1277runops_trace (pTHX)
941{ 1278{
942 COP *oldcop = 0; 1279 COP *oldcop = 0;
943 int oldcxix = -2; 1280 int oldcxix = -2;
944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1281
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1282 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1283 {
949 PERL_ASYNC_CHECK (); 1284 PERL_ASYNC_CHECK ();
950 1285
951 if (cctx->flags & CC_TRACE_ALL) 1286 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1287 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1288 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1289 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1290 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1291 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1292 AV *av = newAV (); /* return values */
958 SV **cb; 1293 SV **cb;
… …
995 1330
996 if (PL_curcop != &PL_compiling) 1331 if (PL_curcop != &PL_compiling)
997 { 1332 {
998 SV **cb; 1333 SV **cb;
999 1334
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1335 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1336 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1337 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1338
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1339 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1340 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1341 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1342 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1343 SV *fullname = sv_2mortal (newSV (0));
1010 1344
1011 if (isGV (gv)) 1345 if (isGV (gv))
… …
1016 SAVETMPS; 1350 SAVETMPS;
1017 EXTEND (SP, 3); 1351 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1352 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1353 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1354 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1355 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1356 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1357 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1358 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1359 SPAGAIN;
1026 FREETMPS; 1360 FREETMPS;
… …
1029 } 1363 }
1030 1364
1031 oldcxix = cxstack_ix; 1365 oldcxix = cxstack_ix;
1032 } 1366 }
1033 1367
1034 if (cctx->flags & CC_TRACE_LINE) 1368 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1369 {
1036 dSP; 1370 dSP;
1037 1371
1038 PL_runops = RUNOPS_DEFAULT; 1372 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1373 ENTER;
… …
1058 1392
1059 TAINT_NOT; 1393 TAINT_NOT;
1060 return 0; 1394 return 0;
1061} 1395}
1062 1396
1063static struct coro_cctx *cctx_ssl_cctx;
1064static struct CoroSLF cctx_ssl_frame; 1397static struct CoroSLF cctx_ssl_frame;
1065 1398
1066static void 1399static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1400slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{ 1401{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0; 1402 ta->prev = 0;
1071} 1403}
1072 1404
1073static int 1405static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1406slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{ 1407{
… …
1077 1409
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1410 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079} 1411}
1080 1412
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1413/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1082static void NOINLINE 1414static void ecb_noinline
1083cctx_prepare (pTHX_ coro_cctx *cctx) 1415cctx_prepare (pTHX)
1084{ 1416{
1085 PL_top_env = &PL_start_env; 1417 PL_top_env = &PL_start_env;
1086 1418
1087 if (cctx->flags & CC_TRACE) 1419 if (cctx_current->flags & CC_TRACE)
1088 PL_runops = runops_trace; 1420 PL_runops = runops_trace;
1089 1421
1090 /* we already must be executing an SLF op, there is no other valid way 1422 /* we already must be executing an SLF op, there is no other valid way
1091 * that can lead to creation of a new cctx */ 1423 * that can lead to creation of a new cctx */
1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1424 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1425 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1094 1426
1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1427 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1096 cctx_ssl_cctx = cctx;
1097 cctx_ssl_frame = slf_frame; 1428 cctx_ssl_frame = slf_frame;
1098 1429
1099 slf_frame.prepare = slf_prepare_set_stacklevel; 1430 slf_frame.prepare = slf_prepare_set_stacklevel;
1100 slf_frame.check = slf_check_set_stacklevel; 1431 slf_frame.check = slf_check_set_stacklevel;
1101} 1432}
1102 1433
1103/* the tail of transfer: execute stuff we can only do after a transfer */ 1434/* the tail of transfer: execute stuff we can only do after a transfer */
1104INLINE void 1435ecb_inline void
1105transfer_tail (pTHX) 1436transfer_tail (pTHX)
1106{ 1437{
1107 free_coro_mortal (aTHX); 1438 free_coro_mortal (aTHX);
1439}
1440
1441/* try to exit the same way perl's main function would do */
1442/* we do not bother resetting the environment or other things *7
1443/* that are not, uhm, essential */
1444/* this obviously also doesn't work when perl is embedded */
1445static void ecb_noinline ecb_cold
1446perlish_exit (pTHX)
1447{
1448 int exitstatus = perl_destruct (PL_curinterp);
1449 perl_free (PL_curinterp);
1450 exit (exitstatus);
1108} 1451}
1109 1452
1110/* 1453/*
1111 * this is a _very_ stripped down perl interpreter ;) 1454 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1455 */
… …
1124 /* normally we would need to skip the entersub here */ 1467 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1468 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1469 /* PL_nop = PL_nop->op_next */
1127 1470
1128 /* inject a fake subroutine call to cctx_init */ 1471 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1472 cctx_prepare (aTHX);
1130 1473
1131 /* cctx_run is the alternative tail of transfer() */ 1474 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX); 1475 transfer_tail (aTHX);
1133 1476
1134 /* somebody or something will hit me for both perl_run and PL_restartop */ 1477 /* somebody or something will hit me for both perl_run and PL_restartop */
1135 PL_restartop = PL_op; 1478 PL_restartop = PL_op;
1136 perl_run (PL_curinterp); 1479 perl_run (PL_curinterp);
1480 /*
1481 * Unfortunately, there is no way to get at the return values of the
1482 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1483 * runtime errors here, as this is just a random interpreter, not a thread.
1484 */
1137 1485
1138 /* 1486 /*
1139 * If perl-run returns we assume exit() was being called or the coro 1487 * If perl-run returns we assume exit() was being called or the coro
1140 * fell off the end, which seems to be the only valid (non-bug) 1488 * fell off the end, which seems to be the only valid (non-bug)
1141 * reason for perl_run to return. We try to exit by jumping to the 1489 * reason for perl_run to return. We try to mimic whatever perl is normally
1142 * bootstrap-time "top" top_env, as we cannot restore the "main" 1490 * doing in that case. YMMV.
1143 * coroutine as Coro has no such concept
1144 */ 1491 */
1145 PL_top_env = main_top_env; 1492 perlish_exit (aTHX);
1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 } 1493 }
1148} 1494}
1149 1495
1150static coro_cctx * 1496static coro_cctx *
1151cctx_new () 1497cctx_new (void)
1152{ 1498{
1153 coro_cctx *cctx; 1499 coro_cctx *cctx;
1154 1500
1155 ++cctx_count; 1501 ++cctx_count;
1156 New (0, cctx, 1, coro_cctx); 1502 New (0, cctx, 1, coro_cctx);
… …
1162 return cctx; 1508 return cctx;
1163} 1509}
1164 1510
1165/* create a new cctx only suitable as source */ 1511/* create a new cctx only suitable as source */
1166static coro_cctx * 1512static coro_cctx *
1167cctx_new_empty () 1513cctx_new_empty (void)
1168{ 1514{
1169 coro_cctx *cctx = cctx_new (); 1515 coro_cctx *cctx = cctx_new ();
1170 1516
1171 cctx->sptr = 0; 1517 cctx->stack.sptr = 0;
1172 coro_create (&cctx->cctx, 0, 0, 0, 0); 1518 coro_create (&cctx->cctx, 0, 0, 0, 0);
1173 1519
1174 return cctx; 1520 return cctx;
1175} 1521}
1176 1522
1177/* create a new cctx suitable as destination/running a perl interpreter */ 1523/* create a new cctx suitable as destination/running a perl interpreter */
1178static coro_cctx * 1524static coro_cctx *
1179cctx_new_run () 1525cctx_new_run (void)
1180{ 1526{
1181 coro_cctx *cctx = cctx_new (); 1527 coro_cctx *cctx = cctx_new ();
1182 void *stack_start;
1183 size_t stack_size;
1184 1528
1185#if HAVE_MMAP 1529 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1186 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1187 /* mmap supposedly does allocate-on-write for us */
1188 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1189
1190 if (cctx->sptr != (void *)-1)
1191 {
1192 #if CORO_STACKGUARD
1193 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1194 #endif
1195 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1196 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1197 cctx->flags |= CC_MAPPED;
1198 } 1530 {
1199 else
1200#endif
1201 {
1202 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1203 New (0, cctx->sptr, cctx_stacksize, long);
1204
1205 if (!cctx->sptr)
1206 {
1207 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1531 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1208 _exit (EXIT_FAILURE); 1532 _exit (EXIT_FAILURE);
1209 }
1210
1211 stack_start = cctx->sptr;
1212 stack_size = cctx->ssize;
1213 } 1533 }
1214 1534
1215 #if CORO_USE_VALGRIND
1216 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1217 #endif
1218
1219 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1535 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1220 1536
1221 return cctx; 1537 return cctx;
1222} 1538}
1223 1539
1224static void 1540static void
1225cctx_destroy (coro_cctx *cctx) 1541cctx_destroy (coro_cctx *cctx)
1226{ 1542{
1227 if (!cctx) 1543 if (!cctx)
1228 return; 1544 return;
1229 1545
1546 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1547
1230 --cctx_count; 1548 --cctx_count;
1231 coro_destroy (&cctx->cctx); 1549 coro_destroy (&cctx->cctx);
1232 1550
1233 /* coro_transfer creates new, empty cctx's */ 1551 coro_stack_free (&cctx->stack);
1234 if (cctx->sptr)
1235 {
1236 #if CORO_USE_VALGRIND
1237 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1238 #endif
1239
1240#if HAVE_MMAP
1241 if (cctx->flags & CC_MAPPED)
1242 munmap (cctx->sptr, cctx->ssize);
1243 else
1244#endif
1245 Safefree (cctx->sptr);
1246 }
1247 1552
1248 Safefree (cctx); 1553 Safefree (cctx);
1249} 1554}
1250 1555
1251/* wether this cctx should be destructed */ 1556/* wether this cctx should be destructed */
1252#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1557#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1253 1558
1254static coro_cctx * 1559static coro_cctx *
1255cctx_get (pTHX) 1560cctx_get (pTHX)
1256{ 1561{
1257 while (expect_true (cctx_first)) 1562 while (ecb_expect_true (cctx_first))
1258 { 1563 {
1259 coro_cctx *cctx = cctx_first; 1564 coro_cctx *cctx = cctx_first;
1260 cctx_first = cctx->next; 1565 cctx_first = cctx->next;
1261 --cctx_idle; 1566 --cctx_idle;
1262 1567
1263 if (expect_true (!CCTX_EXPIRED (cctx))) 1568 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1264 return cctx; 1569 return cctx;
1265 1570
1266 cctx_destroy (cctx); 1571 cctx_destroy (cctx);
1267 } 1572 }
1268 1573
… …
1270} 1575}
1271 1576
1272static void 1577static void
1273cctx_put (coro_cctx *cctx) 1578cctx_put (coro_cctx *cctx)
1274{ 1579{
1275 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1580 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1276 1581
1277 /* free another cctx if overlimit */ 1582 /* free another cctx if overlimit */
1278 if (expect_false (cctx_idle >= cctx_max_idle)) 1583 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1279 { 1584 {
1280 coro_cctx *first = cctx_first; 1585 coro_cctx *first = cctx_first;
1281 cctx_first = first->next; 1586 cctx_first = first->next;
1282 --cctx_idle; 1587 --cctx_idle;
1283 1588
… …
1294static void 1599static void
1295transfer_check (pTHX_ struct coro *prev, struct coro *next) 1600transfer_check (pTHX_ struct coro *prev, struct coro *next)
1296{ 1601{
1297 /* TODO: throwing up here is considered harmful */ 1602 /* TODO: throwing up here is considered harmful */
1298 1603
1299 if (expect_true (prev != next)) 1604 if (ecb_expect_true (prev != next))
1300 { 1605 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1606 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1607 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1303 1608
1304 if (expect_false (next->flags & CF_RUNNING)) 1609 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1306
1307 if (expect_false (next->flags & CF_DESTROYED))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1610 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1309 1611
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1612#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1613 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1614 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1615#endif
1314 } 1616 }
1315} 1617}
1316 1618
1317/* always use the TRANSFER macro */ 1619/* always use the TRANSFER macro */
1318static void NOINLINE /* noinline so we have a fixed stackframe */ 1620static void ecb_noinline /* noinline so we have a fixed stackframe */
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1621transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1622{
1321 dSTACKLEVEL; 1623 dSTACKLEVEL;
1322 1624
1323 /* sometimes transfer is only called to set idle_sp */ 1625 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1626 if (ecb_expect_false (!prev))
1325 { 1627 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1628 cctx_current->idle_sp = STACKLEVEL;
1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1629 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1328 } 1630 }
1329 else if (expect_true (prev != next)) 1631 else if (ecb_expect_true (prev != next))
1330 { 1632 {
1331 coro_cctx *prev__cctx; 1633 coro_cctx *cctx_prev;
1332 1634
1333 if (expect_false (prev->flags & CF_NEW)) 1635 if (ecb_expect_false (prev->flags & CF_NEW))
1334 { 1636 {
1335 /* create a new empty/source context */ 1637 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1638 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1639 prev->flags |= CF_RUNNING;
1339 } 1640 }
1340 1641
1341 prev->flags &= ~CF_RUNNING; 1642 prev->flags &= ~CF_RUNNING;
1342 next->flags |= CF_RUNNING; 1643 next->flags |= CF_RUNNING;
1343 1644
1344 /* first get rid of the old state */ 1645 /* first get rid of the old state */
1345 save_perl (aTHX_ prev); 1646 save_perl (aTHX_ prev);
1346 1647
1347 if (expect_false (next->flags & CF_NEW)) 1648 if (ecb_expect_false (next->flags & CF_NEW))
1348 { 1649 {
1349 /* need to start coroutine */ 1650 /* need to start coroutine */
1350 next->flags &= ~CF_NEW; 1651 next->flags &= ~CF_NEW;
1351 /* setup coroutine call */ 1652 /* setup coroutine call */
1352 coro_setup (aTHX_ next); 1653 init_perl (aTHX_ next);
1353 } 1654 }
1354 else 1655 else
1355 load_perl (aTHX_ next); 1656 load_perl (aTHX_ next);
1356 1657
1357 prev__cctx = prev->cctx;
1358
1359 /* possibly untie and reuse the cctx */ 1658 /* possibly untie and reuse the cctx */
1360 if (expect_true ( 1659 if (ecb_expect_true (
1361 prev__cctx->idle_sp == STACKLEVEL 1660 cctx_current->idle_sp == STACKLEVEL
1362 && !(prev__cctx->flags & CC_TRACE) 1661 && !(cctx_current->flags & CC_TRACE)
1363 && !force_cctx 1662 && !force_cctx
1364 )) 1663 ))
1365 { 1664 {
1366 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1665 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1666 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1368 1667
1369 prev->cctx = 0;
1370
1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1668 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1669 /* without this the next cctx_get might destroy the running cctx while still in use */
1373 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1670 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1374 if (!next->cctx) 1671 if (ecb_expect_true (!next->cctx))
1375 next->cctx = cctx_get (aTHX); 1672 next->cctx = cctx_get (aTHX);
1376 1673
1377 cctx_put (prev__cctx); 1674 cctx_put (cctx_current);
1378 } 1675 }
1676 else
1677 prev->cctx = cctx_current;
1379 1678
1380 ++next->usecount; 1679 ++next->usecount;
1381 1680
1382 if (expect_true (!next->cctx)) 1681 cctx_prev = cctx_current;
1383 next->cctx = cctx_get (aTHX); 1682 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1384 1683
1385 if (expect_false (prev__cctx != next->cctx)) 1684 next->cctx = 0;
1685
1686 if (ecb_expect_false (cctx_prev != cctx_current))
1386 { 1687 {
1387 prev__cctx->top_env = PL_top_env; 1688 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1689 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1690 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1691 }
1391 1692
1392 transfer_tail (aTHX); 1693 transfer_tail (aTHX);
1393 } 1694 }
1394} 1695}
… …
1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1697#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1698#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1398 1699
1399/** high level stuff ********************************************************/ 1700/** high level stuff ********************************************************/
1400 1701
1702/* this function is actually Coro, not Coro::State, but we call it from here */
1703/* because it is convenient - but it hasn't been declared yet for that reason */
1401static int 1704static void
1705coro_call_on_destroy (pTHX_ struct coro *coro);
1706
1707static void
1402coro_state_destroy (pTHX_ struct coro *coro) 1708coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1709{
1404 if (coro->flags & CF_DESTROYED) 1710 if (coro->flags & CF_ZOMBIE)
1405 return 0; 1711 return;
1406 1712
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro); 1713 slf_destroy (aTHX_ coro);
1409 1714
1410 coro->flags |= CF_DESTROYED; 1715 coro->flags |= CF_ZOMBIE;
1411 1716
1412 if (coro->flags & CF_READY) 1717 if (coro->flags & CF_READY)
1413 { 1718 {
1414 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1719 /* reduce nready, as destroying a ready coro effectively unreadies it */
1415 /* alternative: look through all ready queues and remove the coro */ 1720 /* alternative: look through all ready queues and remove the coro */
1416 --coro_nready; 1721 --coro_nready;
1417 } 1722 }
1418 else 1723 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1724 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1725
1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1422 {
1423 struct coro temp;
1424
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1426
1427 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro);
1429
1430 coro_destruct (aTHX_ coro);
1431
1432 load_perl (aTHX_ &temp);
1433
1434 coro->slot = 0;
1435 }
1436
1437 cctx_destroy (coro->cctx);
1438 SvREFCNT_dec (coro->args);
1439
1440 if (coro->next) coro->next->prev = coro->prev; 1726 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1727 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1728 if (coro == coro_first) coro_first = coro->next;
1443 1729
1444 return 1; 1730 if (coro->mainstack
1731 && coro->mainstack != main_mainstack
1732 && coro->slot
1733 && !PL_dirty)
1734 destroy_perl (aTHX_ coro);
1735
1736 cctx_destroy (coro->cctx);
1737 SvREFCNT_dec (coro->startcv);
1738 SvREFCNT_dec (coro->args);
1739 SvREFCNT_dec (coro->swap_sv);
1740 SvREFCNT_dec (CORO_THROW);
1741
1742 coro_call_on_destroy (aTHX_ coro);
1743
1744 /* more destruction mayhem in coro_state_free */
1445} 1745}
1446 1746
1447static int 1747static int
1448coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1748coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1449{ 1749{
1450 struct coro *coro = (struct coro *)mg->mg_ptr; 1750 struct coro *coro = (struct coro *)mg->mg_ptr;
1451 mg->mg_ptr = 0; 1751 mg->mg_ptr = 0;
1452 1752
1453 coro->hv = 0;
1454
1455 if (--coro->refcnt < 0)
1456 {
1457 coro_state_destroy (aTHX_ coro); 1753 coro_state_destroy (aTHX_ coro);
1754 SvREFCNT_dec (coro->on_destroy);
1755 SvREFCNT_dec (coro->status);
1756
1458 Safefree (coro); 1757 Safefree (coro);
1459 }
1460 1758
1461 return 0; 1759 return 0;
1462} 1760}
1463 1761
1464static int 1762static int ecb_cold
1465coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1763coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1466{ 1764{
1467 struct coro *coro = (struct coro *)mg->mg_ptr; 1765 /* called when perl clones the current process the slow way (windows process emulation) */
1468 1766 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1469 ++coro->refcnt; 1767 mg->mg_ptr = 0;
1768 mg->mg_virtual = 0;
1470 1769
1471 return 0; 1770 return 0;
1472} 1771}
1473 1772
1474static MGVTBL coro_state_vtbl = { 1773static MGVTBL coro_state_vtbl = {
… …
1499 TRANSFER (ta, 1); 1798 TRANSFER (ta, 1);
1500} 1799}
1501 1800
1502/** Coro ********************************************************************/ 1801/** Coro ********************************************************************/
1503 1802
1504INLINE void 1803ecb_inline void
1505coro_enq (pTHX_ struct coro *coro) 1804coro_enq (pTHX_ struct coro *coro)
1506{ 1805{
1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1806 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1508}
1509 1807
1510INLINE SV * 1808 SvREFCNT_inc_NN (coro->hv);
1809
1810 coro->next_ready = 0;
1811 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1812 ready [1] = coro;
1813}
1814
1815ecb_inline struct coro *
1511coro_deq (pTHX) 1816coro_deq (pTHX)
1512{ 1817{
1513 int prio; 1818 int prio;
1514 1819
1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1820 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1516 if (AvFILLp (coro_ready [prio]) >= 0) 1821 {
1517 return av_shift (coro_ready [prio]); 1822 struct coro **ready = coro_ready [prio];
1823
1824 if (ready [0])
1825 {
1826 struct coro *coro = ready [0];
1827 ready [0] = coro->next_ready;
1828 return coro;
1829 }
1830 }
1518 1831
1519 return 0; 1832 return 0;
1833}
1834
1835static void
1836invoke_sv_ready_hook_helper (void)
1837{
1838 dTHX;
1839 dSP;
1840
1841 ENTER;
1842 SAVETMPS;
1843
1844 PUSHMARK (SP);
1845 PUTBACK;
1846 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1847
1848 FREETMPS;
1849 LEAVE;
1520} 1850}
1521 1851
1522static int 1852static int
1523api_ready (pTHX_ SV *coro_sv) 1853api_ready (pTHX_ SV *coro_sv)
1524{ 1854{
1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1528
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1855 struct coro *coro = SvSTATE (coro_sv);
1533 1856
1534 if (coro->flags & CF_READY) 1857 if (coro->flags & CF_READY)
1535 return 0; 1858 return 0;
1536 1859
1537 coro->flags |= CF_READY; 1860 coro->flags |= CF_READY;
1538 1861
1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro); 1862 coro_enq (aTHX_ coro);
1543 ++coro_nready;
1544 1863
1545 if (sv_hook) 1864 if (!coro_nready++)
1546 { 1865 if (coroapi.readyhook)
1547 dSP; 1866 coroapi.readyhook ();
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1555
1556 FREETMPS;
1557 LEAVE;
1558 }
1559
1560 if (xs_hook)
1561 xs_hook ();
1562 1867
1563 return 1; 1868 return 1;
1564} 1869}
1565 1870
1566static int 1871static int
1567api_is_ready (pTHX_ SV *coro_sv) 1872api_is_ready (pTHX_ SV *coro_sv)
1568{ 1873{
1569 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1874 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1570} 1875}
1571 1876
1572INLINE void 1877/* expects to own a reference to next->hv */
1878ecb_inline void
1573prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1879prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1574{ 1880{
1575 SV *prev_sv, *next_sv;
1576
1577 for (;;)
1578 {
1579 next_sv = coro_deq (aTHX);
1580
1581 /* nothing to schedule: call the idle handler */
1582 if (expect_false (!next_sv))
1583 {
1584 dSP;
1585
1586 ENTER;
1587 SAVETMPS;
1588
1589 PUSHMARK (SP);
1590 PUTBACK;
1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1592
1593 FREETMPS;
1594 LEAVE;
1595 continue;
1596 }
1597
1598 ta->next = SvSTATE_hv (next_sv);
1599
1600 /* cannot transfer to destroyed coros, skip and look for next */
1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1602 {
1603 SvREFCNT_dec (next_sv);
1604 /* coro_nready has already been taken care of by destroy */
1605 continue;
1606 }
1607
1608 --coro_nready;
1609 break;
1610 }
1611
1612 /* free this only after the transfer */
1613 prev_sv = SvRV (coro_current); 1881 SV *prev_sv = SvRV (coro_current);
1882
1614 ta->prev = SvSTATE_hv (prev_sv); 1883 ta->prev = SvSTATE_hv (prev_sv);
1884 ta->next = next;
1885
1615 TRANSFER_CHECK (*ta); 1886 TRANSFER_CHECK (*ta);
1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1887
1617 ta->next->flags &= ~CF_READY;
1618 SvRV_set (coro_current, next_sv); 1888 SvRV_set (coro_current, (SV *)next->hv);
1619 1889
1620 free_coro_mortal (aTHX); 1890 free_coro_mortal (aTHX);
1621 coro_mortal = prev_sv; 1891 coro_mortal = prev_sv;
1622} 1892}
1623 1893
1624INLINE void 1894static void
1895prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1896{
1897 for (;;)
1898 {
1899 struct coro *next = coro_deq (aTHX);
1900
1901 if (ecb_expect_true (next))
1902 {
1903 /* cannot transfer to destroyed coros, skip and look for next */
1904 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1905 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1906 else
1907 {
1908 next->flags &= ~CF_READY;
1909 --coro_nready;
1910
1911 prepare_schedule_to (aTHX_ ta, next);
1912 break;
1913 }
1914 }
1915 else
1916 {
1917 /* nothing to schedule: call the idle handler */
1918 if (SvROK (sv_idle)
1919 && SvOBJECT (SvRV (sv_idle)))
1920 {
1921 if (SvRV (sv_idle) == SvRV (coro_current))
1922 {
1923 require_pv ("Carp");
1924
1925 {
1926 dSP;
1927
1928 ENTER;
1929 SAVETMPS;
1930
1931 PUSHMARK (SP);
1932 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught", 0)));
1933 PUTBACK;
1934 call_pv ("Carp::confess", G_VOID | G_DISCARD);
1935
1936 FREETMPS;
1937 LEAVE;
1938 }
1939 }
1940
1941 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1942 api_ready (aTHX_ SvRV (sv_idle));
1943 --coro_nready;
1944 }
1945 else
1946 {
1947 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1948 dSP;
1949
1950 ENTER;
1951 SAVETMPS;
1952
1953 PUSHMARK (SP);
1954 PUTBACK;
1955 call_sv (sv_idle, G_VOID | G_DISCARD);
1956
1957 FREETMPS;
1958 LEAVE;
1959 }
1960 }
1961 }
1962}
1963
1964ecb_inline void
1625prepare_cede (pTHX_ struct coro_transfer_args *ta) 1965prepare_cede (pTHX_ struct coro_transfer_args *ta)
1626{ 1966{
1627 api_ready (aTHX_ coro_current); 1967 api_ready (aTHX_ coro_current);
1628 prepare_schedule (aTHX_ ta); 1968 prepare_schedule (aTHX_ ta);
1629} 1969}
1630 1970
1631INLINE void 1971ecb_inline void
1632prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1972prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1633{ 1973{
1634 SV *prev = SvRV (coro_current); 1974 SV *prev = SvRV (coro_current);
1635 1975
1636 if (coro_nready) 1976 if (coro_nready)
… …
1649 1989
1650 prepare_schedule (aTHX_ &ta); 1990 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1); 1991 TRANSFER (ta, 1);
1652} 1992}
1653 1993
1994static void
1995api_schedule_to (pTHX_ SV *coro_sv)
1996{
1997 struct coro_transfer_args ta;
1998 struct coro *next = SvSTATE (coro_sv);
1999
2000 SvREFCNT_inc_NN (coro_sv);
2001 prepare_schedule_to (aTHX_ &ta, next);
2002}
2003
1654static int 2004static int
1655api_cede (pTHX) 2005api_cede (pTHX)
1656{ 2006{
1657 struct coro_transfer_args ta; 2007 struct coro_transfer_args ta;
1658 2008
1659 prepare_cede (aTHX_ &ta); 2009 prepare_cede (aTHX_ &ta);
1660 2010
1661 if (expect_true (ta.prev != ta.next)) 2011 if (ecb_expect_true (ta.prev != ta.next))
1662 { 2012 {
1663 TRANSFER (ta, 1); 2013 TRANSFER (ta, 1);
1664 return 1; 2014 return 1;
1665 } 2015 }
1666 else 2016 else
… …
1685static void 2035static void
1686api_trace (pTHX_ SV *coro_sv, int flags) 2036api_trace (pTHX_ SV *coro_sv, int flags)
1687{ 2037{
1688 struct coro *coro = SvSTATE (coro_sv); 2038 struct coro *coro = SvSTATE (coro_sv);
1689 2039
2040 if (coro->flags & CF_RUNNING)
2041 croak ("cannot enable tracing on a running coroutine, caught");
2042
1690 if (flags & CC_TRACE) 2043 if (flags & CC_TRACE)
1691 { 2044 {
1692 if (!coro->cctx) 2045 if (!coro->cctx)
1693 coro->cctx = cctx_new_run (); 2046 coro->cctx = cctx_new_run ();
1694 else if (!(coro->cctx->flags & CC_TRACE)) 2047 else if (!(coro->cctx->flags & CC_TRACE))
1695 croak ("cannot enable tracing on coroutine with custom stack,"); 2048 croak ("cannot enable tracing on coroutine with custom stack, caught");
1696 2049
1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2050 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1698 } 2051 }
1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2052 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1700 { 2053 {
… …
1703 if (coro->flags & CF_RUNNING) 2056 if (coro->flags & CF_RUNNING)
1704 PL_runops = RUNOPS_DEFAULT; 2057 PL_runops = RUNOPS_DEFAULT;
1705 else 2058 else
1706 coro->slot->runops = RUNOPS_DEFAULT; 2059 coro->slot->runops = RUNOPS_DEFAULT;
1707 } 2060 }
2061}
2062
2063static void
2064coro_push_av (pTHX_ AV *av, I32 gimme_v)
2065{
2066 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2067 {
2068 dSP;
2069
2070 if (gimme_v == G_SCALAR)
2071 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2072 else
2073 {
2074 int i;
2075 EXTEND (SP, AvFILLp (av) + 1);
2076
2077 for (i = 0; i <= AvFILLp (av); ++i)
2078 PUSHs (AvARRAY (av)[i]);
2079 }
2080
2081 PUTBACK;
2082 }
2083}
2084
2085static void
2086coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2087{
2088 if (!coro->on_destroy)
2089 coro->on_destroy = newAV ();
2090
2091 av_push (coro->on_destroy, cb);
2092}
2093
2094static void
2095slf_destroy_join (pTHX_ struct CoroSLF *frame)
2096{
2097 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2098}
2099
2100static int
2101slf_check_join (pTHX_ struct CoroSLF *frame)
2102{
2103 struct coro *coro = (struct coro *)frame->data;
2104
2105 if (!coro->status)
2106 return 1;
2107
2108 frame->destroy = 0;
2109
2110 coro_push_av (aTHX_ coro->status, GIMME_V);
2111
2112 SvREFCNT_dec ((SV *)coro->hv);
2113
2114 return 0;
2115}
2116
2117static void
2118slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2119{
2120 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2121
2122 if (items > 1)
2123 croak ("join called with too many arguments");
2124
2125 if (coro->status)
2126 frame->prepare = prepare_nop;
2127 else
2128 {
2129 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2130 frame->prepare = prepare_schedule;
2131 }
2132
2133 frame->check = slf_check_join;
2134 frame->destroy = slf_destroy_join;
2135 frame->data = (void *)coro;
2136 SvREFCNT_inc (coro->hv);
2137}
2138
2139static void
2140coro_call_on_destroy (pTHX_ struct coro *coro)
2141{
2142 AV *od = coro->on_destroy;
2143
2144 if (!od)
2145 return;
2146
2147 coro->on_destroy = 0;
2148 sv_2mortal ((SV *)od);
2149
2150 while (AvFILLp (od) >= 0)
2151 {
2152 SV *cb = sv_2mortal (av_pop (od));
2153
2154 /* coro hv's (and only hv's at the moment) are supported as well */
2155 if (SvSTATEhv_p (aTHX_ cb))
2156 api_ready (aTHX_ cb);
2157 else
2158 {
2159 dSP; /* don't disturb outer sp */
2160 PUSHMARK (SP);
2161
2162 if (coro->status)
2163 {
2164 PUTBACK;
2165 coro_push_av (aTHX_ coro->status, G_ARRAY);
2166 SPAGAIN;
2167 }
2168
2169 PUTBACK;
2170 call_sv (cb, G_VOID | G_DISCARD);
2171 }
2172 }
2173}
2174
2175static void
2176coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2177{
2178 AV *av;
2179
2180 if (coro->status)
2181 {
2182 av = coro->status;
2183 av_clear (av);
2184 }
2185 else
2186 av = coro->status = newAV ();
2187
2188 /* items are actually not so common, so optimise for this case */
2189 if (items)
2190 {
2191 int i;
2192
2193 av_extend (av, items - 1);
2194
2195 for (i = 0; i < items; ++i)
2196 av_push (av, SvREFCNT_inc_NN (arg [i]));
2197 }
2198}
2199
2200static void
2201slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2202{
2203 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2204 api_ready (aTHX_ sv_manager);
2205
2206 frame->prepare = prepare_schedule;
2207 frame->check = slf_check_repeat;
2208
2209 /* as a minor optimisation, we could unwind all stacks here */
2210 /* but that puts extra pressure on pp_slf, and is not worth much */
2211 /*coro_unwind_stacks (aTHX);*/
2212}
2213
2214static void
2215slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2216{
2217 HV *coro_hv = (HV *)SvRV (coro_current);
2218
2219 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2220 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2221}
2222
2223static void
2224slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2225{
2226 HV *coro_hv;
2227 struct coro *coro;
2228
2229 if (items <= 0)
2230 croak ("Coro::cancel called without coro object,");
2231
2232 coro = SvSTATE (arg [0]);
2233 coro_hv = coro->hv;
2234
2235 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2236
2237 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2238 {
2239 /* coro currently busy cancelling something, so just notify it */
2240 coro->slf_frame.data = (void *)coro;
2241
2242 frame->prepare = prepare_nop;
2243 frame->check = slf_check_nop;
2244 }
2245 else if (coro_hv == (HV *)SvRV (coro_current))
2246 {
2247 /* cancelling the current coro is allowed, and equals terminate */
2248 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2249 }
2250 else
2251 {
2252 struct coro *self = SvSTATE_current;
2253
2254 /* otherwise we cancel directly, purely for speed reasons
2255 * unfortunately, this requires some magic trickery, as
2256 * somebody else could cancel us, so we have to fight the cancellation.
2257 * this is ugly, and hopefully fully worth the extra speed.
2258 * besides, I can't get the slow-but-safe version working...
2259 */
2260 slf_frame.data = 0;
2261 self->flags |= CF_NOCANCEL;
2262 coro_state_destroy (aTHX_ coro);
2263 self->flags &= ~CF_NOCANCEL;
2264
2265 if (slf_frame.data)
2266 {
2267 /* while we were busy we have been cancelled, so terminate */
2268 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2269 }
2270 else
2271 {
2272 frame->prepare = prepare_nop;
2273 frame->check = slf_check_nop;
2274 }
2275 }
2276}
2277
2278static int
2279slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2280{
2281 frame->prepare = 0;
2282 coro_unwind_stacks (aTHX);
2283
2284 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2285
2286 return 1;
2287}
2288
2289static int
2290safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2291{
2292 if (coro->cctx)
2293 croak ("coro inside C callback, unable to cancel at this time, caught");
2294
2295 if (coro->flags & CF_NEW)
2296 {
2297 coro_set_status (aTHX_ coro, arg, items);
2298 coro_state_destroy (aTHX_ coro);
2299 }
2300 else
2301 {
2302 if (!coro->slf_frame.prepare)
2303 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2304
2305 slf_destroy (aTHX_ coro);
2306
2307 coro_set_status (aTHX_ coro, arg, items);
2308 coro->slf_frame.prepare = prepare_nop;
2309 coro->slf_frame.check = slf_check_safe_cancel;
2310
2311 api_ready (aTHX_ (SV *)coro->hv);
2312 }
2313
2314 return 1;
2315}
2316
2317/*****************************************************************************/
2318/* async pool handler */
2319
2320static int
2321slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2322{
2323 HV *hv = (HV *)SvRV (coro_current);
2324 struct coro *coro = (struct coro *)frame->data;
2325
2326 if (!coro->invoke_cb)
2327 return 1; /* loop till we have invoke */
2328 else
2329 {
2330 hv_store (hv, "desc", sizeof ("desc") - 1,
2331 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2332
2333 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2334
2335 {
2336 dSP;
2337 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2338 PUTBACK;
2339 }
2340
2341 SvREFCNT_dec (GvAV (PL_defgv));
2342 GvAV (PL_defgv) = coro->invoke_av;
2343 coro->invoke_av = 0;
2344
2345 return 0;
2346 }
2347}
2348
2349static void
2350slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2351{
2352 HV *hv = (HV *)SvRV (coro_current);
2353 struct coro *coro = SvSTATE_hv ((SV *)hv);
2354
2355 if (ecb_expect_true (coro->saved_deffh))
2356 {
2357 /* subsequent iteration */
2358 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2359 coro->saved_deffh = 0;
2360
2361 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2362 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2363 {
2364 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2365 return;
2366 }
2367 else
2368 {
2369 av_clear (GvAV (PL_defgv));
2370 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2371
2372 coro->prio = 0;
2373
2374 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2375 api_trace (aTHX_ coro_current, 0);
2376
2377 frame->prepare = prepare_schedule;
2378 av_push (av_async_pool, SvREFCNT_inc (hv));
2379 }
2380 }
2381 else
2382 {
2383 /* first iteration, simply fall through */
2384 frame->prepare = prepare_nop;
2385 }
2386
2387 frame->check = slf_check_pool_handler;
2388 frame->data = (void *)coro;
2389}
2390
2391/*****************************************************************************/
2392/* rouse callback */
2393
2394#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2395
2396static void
2397coro_rouse_callback (pTHX_ CV *cv)
2398{
2399 dXSARGS;
2400 SV *data = (SV *)S_GENSUB_ARG;
2401
2402 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2403 {
2404 /* first call, set args */
2405 SV *coro = SvRV (data);
2406 AV *av = newAV ();
2407
2408 SvRV_set (data, (SV *)av);
2409
2410 /* better take a full copy of the arguments */
2411 while (items--)
2412 av_store (av, items, newSVsv (ST (items)));
2413
2414 api_ready (aTHX_ coro);
2415 SvREFCNT_dec (coro);
2416 }
2417
2418 XSRETURN_EMPTY;
2419}
2420
2421static int
2422slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2423{
2424 SV *data = (SV *)frame->data;
2425
2426 if (CORO_THROW)
2427 return 0;
2428
2429 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2430 return 1;
2431
2432 /* now push all results on the stack */
2433 {
2434 dSP;
2435 AV *av = (AV *)SvRV (data);
2436 int i;
2437
2438 EXTEND (SP, AvFILLp (av) + 1);
2439 for (i = 0; i <= AvFILLp (av); ++i)
2440 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2441
2442 /* we have stolen the elements, so set length to zero and free */
2443 AvFILLp (av) = -1;
2444 av_undef (av);
2445
2446 PUTBACK;
2447 }
2448
2449 return 0;
2450}
2451
2452static void
2453slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2454{
2455 SV *cb;
2456
2457 if (items)
2458 cb = arg [0];
2459 else
2460 {
2461 struct coro *coro = SvSTATE_current;
2462
2463 if (!coro->rouse_cb)
2464 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2465
2466 cb = sv_2mortal (coro->rouse_cb);
2467 coro->rouse_cb = 0;
2468 }
2469
2470 if (!SvROK (cb)
2471 || SvTYPE (SvRV (cb)) != SVt_PVCV
2472 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2473 croak ("Coro::rouse_wait called with illegal callback argument,");
2474
2475 {
2476 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2477 SV *data = (SV *)S_GENSUB_ARG;
2478
2479 frame->data = (void *)data;
2480 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2481 frame->check = slf_check_rouse_wait;
2482 }
2483}
2484
2485static SV *
2486coro_new_rouse_cb (pTHX)
2487{
2488 HV *hv = (HV *)SvRV (coro_current);
2489 struct coro *coro = SvSTATE_hv (hv);
2490 SV *data = newRV_inc ((SV *)hv);
2491 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2492
2493 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2494 SvREFCNT_dec (data); /* magicext increases the refcount */
2495
2496 SvREFCNT_dec (coro->rouse_cb);
2497 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2498
2499 return cb;
1708} 2500}
1709 2501
1710/*****************************************************************************/ 2502/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */ 2503/* schedule-like-function opcode (SLF) */
1712 2504
… …
1762 frame->prepare = prepare_schedule; 2554 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop; 2555 frame->check = slf_check_nop;
1764} 2556}
1765 2557
1766static void 2558static void
2559slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2560{
2561 struct coro *next = (struct coro *)slf_frame.data;
2562
2563 SvREFCNT_inc_NN (next->hv);
2564 prepare_schedule_to (aTHX_ ta, next);
2565}
2566
2567static void
2568slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2569{
2570 if (!items)
2571 croak ("Coro::schedule_to expects a coroutine argument, caught");
2572
2573 frame->data = (void *)SvSTATE (arg [0]);
2574 frame->prepare = slf_prepare_schedule_to;
2575 frame->check = slf_check_nop;
2576}
2577
2578static void
2579slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2580{
2581 api_ready (aTHX_ SvRV (coro_current));
2582
2583 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2584}
2585
2586static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2587slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{ 2588{
1769 frame->prepare = prepare_cede; 2589 frame->prepare = prepare_cede;
1770 frame->check = slf_check_nop; 2590 frame->check = slf_check_nop;
1771} 2591}
… …
1773static void 2593static void
1774slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2594slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1775{ 2595{
1776 frame->prepare = prepare_cede_notself; 2596 frame->prepare = prepare_cede_notself;
1777 frame->check = slf_check_nop; 2597 frame->check = slf_check_nop;
2598}
2599
2600/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2601static void
2602slf_destroy (pTHX_ struct coro *coro)
2603{
2604 struct CoroSLF frame = coro->slf_frame;
2605
2606 /*
2607 * The on_destroy below most likely is from an SLF call.
2608 * Since by definition the SLF call will not finish when we destroy
2609 * the coro, we will have to force-finish it here, otherwise
2610 * cleanup functions cannot call SLF functions.
2611 */
2612 coro->slf_frame.prepare = 0;
2613 coro->slf_frame.destroy = 0;
2614
2615 /* this callback is reserved for slf functions needing to do cleanup */
2616 if (frame.destroy && frame.prepare && !PL_dirty)
2617 frame.destroy (aTHX_ &frame);
1778} 2618}
1779 2619
1780/* 2620/*
1781 * these not obviously related functions are all rolled into one 2621 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same 2622 * function to increase chances that they all will call transfer with the same
… …
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2629 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790 2630
1791 /* set up the slf frame, unless it has already been set-up */ 2631 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */ 2632 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */ 2633 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare)) 2634 if (ecb_expect_true (!slf_frame.prepare))
1795 { 2635 {
1796 /* first iteration */ 2636 /* first iteration */
1797 dSP; 2637 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1; 2638 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */ 2639 int items = SP - arg; /* args without function object */
… …
1840 while (slf_frame.check (aTHX_ &slf_frame)); 2680 while (slf_frame.check (aTHX_ &slf_frame));
1841 2681
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2682 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843 2683
1844 /* exception handling */ 2684 /* exception handling */
1845 if (expect_false (coro_throw)) 2685 if (ecb_expect_false (CORO_THROW))
1846 { 2686 {
1847 SV *exception = sv_2mortal (coro_throw); 2687 SV *exception = sv_2mortal (CORO_THROW);
1848 2688
1849 coro_throw = 0; 2689 CORO_THROW = 0;
1850 sv_setsv (ERRSV, exception); 2690 sv_setsv (ERRSV, exception);
1851 croak (0); 2691 croak (0);
1852 } 2692 }
1853 2693
1854 /* return value handling - mostly like entersub */ 2694 /* return value handling - mostly like entersub */
1855 /* make sure we put something on the stack in scalar context */ 2695 /* make sure we put something on the stack in scalar context */
1856 if (GIMME_V == G_SCALAR) 2696 if (GIMME_V == G_SCALAR
2697 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
1857 { 2698 {
1858 dSP; 2699 dSP;
1859 SV **bot = PL_stack_base + checkmark; 2700 SV **bot = PL_stack_base + checkmark;
1860 2701
1861 if (sp == bot) /* too few, push undef */ 2702 if (sp == bot) /* too few, push undef */
1862 bot [1] = &PL_sv_undef; 2703 bot [1] = &PL_sv_undef;
1863 else if (sp != bot + 1) /* too many, take last one */ 2704 else /* too many, take last one */
1864 bot [1] = *sp; 2705 bot [1] = *sp;
1865 2706
1866 SP = bot + 1; 2707 SP = bot + 1;
1867 2708
1868 PUTBACK; 2709 PUTBACK;
… …
1901 if (PL_op->op_flags & OPf_STACKED) 2742 if (PL_op->op_flags & OPf_STACKED)
1902 { 2743 {
1903 if (items > slf_arga) 2744 if (items > slf_arga)
1904 { 2745 {
1905 slf_arga = items; 2746 slf_arga = items;
1906 free (slf_argv); 2747 Safefree (slf_argv);
1907 slf_argv = malloc (slf_arga * sizeof (SV *)); 2748 New (0, slf_argv, slf_arga, SV *);
1908 } 2749 }
1909 2750
1910 slf_argc = items; 2751 slf_argc = items;
1911 2752
1912 for (i = 0; i < items; ++i) 2753 for (i = 0; i < items; ++i)
… …
1914 } 2755 }
1915 else 2756 else
1916 slf_argc = 0; 2757 slf_argc = 0;
1917 2758
1918 PL_op->op_ppaddr = pp_slf; 2759 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2760 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1920 2761
1921 PL_op = (OP *)&slf_restore; 2762 PL_op = (OP *)&slf_restore;
2763}
2764
2765/*****************************************************************************/
2766/* dynamic wind */
2767
2768static void
2769on_enterleave_call (pTHX_ SV *cb)
2770{
2771 dSP;
2772
2773 PUSHSTACK;
2774
2775 PUSHMARK (SP);
2776 PUTBACK;
2777 call_sv (cb, G_VOID | G_DISCARD);
2778 SPAGAIN;
2779
2780 POPSTACK;
2781}
2782
2783static SV *
2784coro_avp_pop_and_free (pTHX_ AV **avp)
2785{
2786 AV *av = *avp;
2787 SV *res = av_pop (av);
2788
2789 if (AvFILLp (av) < 0)
2790 {
2791 *avp = 0;
2792 SvREFCNT_dec (av);
2793 }
2794
2795 return res;
2796}
2797
2798static void
2799coro_pop_on_enter (pTHX_ void *coro)
2800{
2801 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2802 SvREFCNT_dec (cb);
2803}
2804
2805static void
2806coro_pop_on_leave (pTHX_ void *coro)
2807{
2808 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2809 on_enterleave_call (aTHX_ sv_2mortal (cb));
1922} 2810}
1923 2811
1924/*****************************************************************************/ 2812/*****************************************************************************/
1925/* PerlIO::cede */ 2813/* PerlIO::cede */
1926 2814
… …
1928{ 2816{
1929 PerlIOBuf base; 2817 PerlIOBuf base;
1930 NV next, every; 2818 NV next, every;
1931} PerlIOCede; 2819} PerlIOCede;
1932 2820
1933static IV 2821static IV ecb_cold
1934PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2822PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1935{ 2823{
1936 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2824 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1937 2825
1938 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2826 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1939 self->next = nvtime () + self->every; 2827 self->next = nvtime () + self->every;
1940 2828
1941 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2829 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1942} 2830}
1943 2831
1944static SV * 2832static SV * ecb_cold
1945PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2833PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1946{ 2834{
1947 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2835 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1948 2836
1949 return newSVnv (self->every); 2837 return newSVnv (self->every);
… …
1995 PerlIOBuf_get_cnt, 2883 PerlIOBuf_get_cnt,
1996 PerlIOBuf_set_ptrcnt, 2884 PerlIOBuf_set_ptrcnt,
1997}; 2885};
1998 2886
1999/*****************************************************************************/ 2887/*****************************************************************************/
2888/* Coro::Semaphore & Coro::Signal */
2889
2890static SV *
2891coro_waitarray_new (pTHX_ int count)
2892{
2893 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2894 AV *av = newAV ();
2895 SV **ary;
2896
2897 /* unfortunately, building manually saves memory */
2898 Newx (ary, 2, SV *);
2899 AvALLOC (av) = ary;
2900#if PERL_VERSION_ATLEAST (5,10,0)
2901 AvARRAY (av) = ary;
2902#else
2903 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2904 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2905 SvPVX ((SV *)av) = (char *)ary;
2906#endif
2907 AvMAX (av) = 1;
2908 AvFILLp (av) = 0;
2909 ary [0] = newSViv (count);
2910
2911 return newRV_noinc ((SV *)av);
2912}
2913
2000/* Coro::Semaphore */ 2914/* semaphore */
2001 2915
2002static void 2916static void
2003coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2917coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2004{ 2918{
2005 SV *count_sv = AvARRAY (av)[0]; 2919 SV *count_sv = AvARRAY (av)[0];
… …
2017 AvARRAY (av)[0] = AvARRAY (av)[1]; 2931 AvARRAY (av)[0] = AvARRAY (av)[1];
2018 AvARRAY (av)[1] = count_sv; 2932 AvARRAY (av)[1] = count_sv;
2019 cb = av_shift (av); 2933 cb = av_shift (av);
2020 2934
2021 if (SvOBJECT (cb)) 2935 if (SvOBJECT (cb))
2936 {
2022 api_ready (aTHX_ cb); 2937 api_ready (aTHX_ cb);
2023 else 2938 --count;
2024 croak ("callbacks not yet supported"); 2939 }
2940 else if (SvTYPE (cb) == SVt_PVCV)
2941 {
2942 dSP;
2943 PUSHMARK (SP);
2944 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2945 PUTBACK;
2946 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2947 }
2025 2948
2026 SvREFCNT_dec (cb); 2949 SvREFCNT_dec (cb);
2027
2028 --count;
2029 } 2950 }
2030} 2951}
2031 2952
2032static void 2953static void
2033coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2954coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2034{ 2955{
2035 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2956 /* call $sem->adjust (0) to possibly wake up some other waiters */
2036 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2957 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2037} 2958}
2038 2959
2039static int 2960static int
2040slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2961slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2041{ 2962{
2042 AV *av = (AV *)frame->data; 2963 AV *av = (AV *)frame->data;
2043 SV *count_sv = AvARRAY (av)[0]; 2964 SV *count_sv = AvARRAY (av)[0];
2965 SV *coro_hv = SvRV (coro_current);
2044 2966
2045 /* if we are about to throw, don't actually acquire the lock, just throw */ 2967 /* if we are about to throw, don't actually acquire the lock, just throw */
2046 if (coro_throw) 2968 if (CORO_THROW)
2047 return 0; 2969 return 0;
2048 else if (SvIVX (count_sv) > 0) 2970 else if (SvIVX (count_sv) > 0)
2049 { 2971 {
2050 SvSTATE_current->on_destroy = 0; 2972 frame->destroy = 0;
2973
2974 if (acquire)
2051 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2975 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2976 else
2977 coro_semaphore_adjust (aTHX_ av, 0);
2978
2052 return 0; 2979 return 0;
2053 } 2980 }
2054 else 2981 else
2055 { 2982 {
2056 int i; 2983 int i;
2057 /* if we were woken up but can't down, we look through the whole */ 2984 /* if we were woken up but can't down, we look through the whole */
2058 /* waiters list and only add us if we aren't in there already */ 2985 /* waiters list and only add us if we aren't in there already */
2059 /* this avoids some degenerate memory usage cases */ 2986 /* this avoids some degenerate memory usage cases */
2060 2987 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2061 for (i = 1; i <= AvFILLp (av); ++i)
2062 if (AvARRAY (av)[i] == SvRV (coro_current)) 2988 if (AvARRAY (av)[i] == coro_hv)
2063 return 1; 2989 return 1;
2064 2990
2065 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2991 av_push (av, SvREFCNT_inc (coro_hv));
2066 return 1; 2992 return 1;
2067 } 2993 }
2068} 2994}
2069 2995
2070static void 2996static int
2997slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2998{
2999 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3000}
3001
3002static int
3003slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3004{
3005 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3006}
3007
3008static void
2071slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3009slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2072{ 3010{
2073 AV *av = (AV *)SvRV (arg [0]); 3011 AV *av = (AV *)SvRV (arg [0]);
2074 3012
2075 if (SvIVX (AvARRAY (av)[0]) > 0) 3013 if (SvIVX (AvARRAY (av)[0]) > 0)
2076 { 3014 {
… …
2081 { 3019 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3020 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083 3021
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3022 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule; 3023 frame->prepare = prepare_schedule;
2086
2087 /* to avoid race conditions when a woken-up coro gets terminated */ 3024 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3025 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3026 frame->destroy = coro_semaphore_destroy;
2090 } 3027 }
3028}
2091 3029
3030static void
3031slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3032{
3033 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2092 frame->check = slf_check_semaphore_down; 3034 frame->check = slf_check_semaphore_down;
2093
2094} 3035}
2095 3036
2096/*****************************************************************************/ 3037static void
2097/* gensub: simple closure generation utility */ 3038slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 3039{
2107 CV *cv = (CV *)newSV (0); 3040 if (items >= 2)
3041 {
3042 /* callback form */
3043 AV *av = (AV *)SvRV (arg [0]);
3044 SV *cb_cv = s_get_cv_croak (arg [1]);
2108 3045
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 3046 av_push (av, SvREFCNT_inc_NN (cb_cv));
2110 3047
2111 CvANON_on (cv); 3048 if (SvIVX (AvARRAY (av)[0]) > 0)
2112 CvISXSUB_on (cv); 3049 coro_semaphore_adjust (aTHX_ av, 0);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 3050
2116 return newRV_noinc ((SV *)cv); 3051 frame->prepare = prepare_nop;
3052 frame->check = slf_check_nop;
3053 }
3054 else
3055 {
3056 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3057 frame->check = slf_check_semaphore_wait;
3058 }
3059}
3060
3061/* signal */
3062
3063static void
3064coro_signal_wake (pTHX_ AV *av, int count)
3065{
3066 SvIVX (AvARRAY (av)[0]) = 0;
3067
3068 /* now signal count waiters */
3069 while (count > 0 && AvFILLp (av) > 0)
3070 {
3071 SV *cb;
3072
3073 /* swap first two elements so we can shift a waiter */
3074 cb = AvARRAY (av)[0];
3075 AvARRAY (av)[0] = AvARRAY (av)[1];
3076 AvARRAY (av)[1] = cb;
3077
3078 cb = av_shift (av);
3079
3080 if (SvTYPE (cb) == SVt_PVCV)
3081 {
3082 dSP;
3083 PUSHMARK (SP);
3084 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3085 PUTBACK;
3086 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3087 }
3088 else
3089 {
3090 api_ready (aTHX_ cb);
3091 sv_setiv (cb, 0); /* signal waiter */
3092 }
3093
3094 SvREFCNT_dec (cb);
3095
3096 --count;
3097 }
3098}
3099
3100static int
3101slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3102{
3103 /* if we are about to throw, also stop waiting */
3104 return SvROK ((SV *)frame->data) && !CORO_THROW;
3105}
3106
3107static void
3108slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3109{
3110 AV *av = (AV *)SvRV (arg [0]);
3111
3112 if (items >= 2)
3113 {
3114 SV *cb_cv = s_get_cv_croak (arg [1]);
3115 av_push (av, SvREFCNT_inc_NN (cb_cv));
3116
3117 if (SvIVX (AvARRAY (av)[0]))
3118 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3119
3120 frame->prepare = prepare_nop;
3121 frame->check = slf_check_nop;
3122 }
3123 else if (SvIVX (AvARRAY (av)[0]))
3124 {
3125 SvIVX (AvARRAY (av)[0]) = 0;
3126 frame->prepare = prepare_nop;
3127 frame->check = slf_check_nop;
3128 }
3129 else
3130 {
3131 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3132
3133 av_push (av, waiter);
3134
3135 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3136 frame->prepare = prepare_schedule;
3137 frame->check = slf_check_signal_wait;
3138 }
2117} 3139}
2118 3140
2119/*****************************************************************************/ 3141/*****************************************************************************/
2120/* Coro::AIO */ 3142/* Coro::AIO */
2121 3143
… …
2132 3154
2133static void 3155static void
2134coro_aio_callback (pTHX_ CV *cv) 3156coro_aio_callback (pTHX_ CV *cv)
2135{ 3157{
2136 dXSARGS; 3158 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG; 3159 AV *state = (AV *)S_GENSUB_ARG;
2138 SV *coro = av_pop (state); 3160 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state)); 3161 SV *data_sv = newSV (sizeof (struct io_state));
2140 3162
2141 av_extend (state, items); 3163 av_extend (state, items - 1);
2142 3164
2143 sv_upgrade (data_sv, SVt_PV); 3165 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state)); 3166 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv); 3167 SvPOK_only (data_sv);
2146 3168
… …
2174 AV *state = (AV *)frame->data; 3196 AV *state = (AV *)frame->data;
2175 3197
2176 /* if we are about to throw, return early */ 3198 /* if we are about to throw, return early */
2177 /* this does not cancel the aio request, but at least */ 3199 /* this does not cancel the aio request, but at least */
2178 /* it quickly returns */ 3200 /* it quickly returns */
2179 if (coro_throw) 3201 if (CORO_THROW)
2180 return 0; 3202 return 0;
2181 3203
2182 /* one element that is an RV? repeat! */ 3204 /* one element that is an RV? repeat! */
2183 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3205 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2184 return 1; 3206 return 1;
2185 3207
2186 /* restore status */ 3208 /* restore status */
2187 { 3209 {
2188 SV *data_sv = av_pop (state); 3210 SV *data_sv = av_pop (state);
… …
2227 dSP; 3249 dSP;
2228 3250
2229 static SV *prio_cv; 3251 static SV *prio_cv;
2230 static SV *prio_sv; 3252 static SV *prio_sv;
2231 3253
2232 if (expect_false (!prio_cv)) 3254 if (ecb_expect_false (!prio_cv))
2233 { 3255 {
2234 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3256 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2235 prio_sv = newSViv (0); 3257 prio_sv = newSViv (0);
2236 } 3258 }
2237 3259
… …
2256 3278
2257 for (i = 0; i < items; ++i) 3279 for (i = 0; i < items; ++i)
2258 PUSHs (arg [i]); 3280 PUSHs (arg [i]);
2259 3281
2260 /* now push the callback closure */ 3282 /* now push the callback closure */
2261 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3283 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2262 3284
2263 /* now call the AIO function - we assume our request is uncancelable */ 3285 /* now call the AIO function - we assume our request is uncancelable */
2264 PUTBACK; 3286 PUTBACK;
2265 call_sv ((SV *)req, G_VOID | G_DISCARD); 3287 call_sv ((SV *)req, G_VOID | G_DISCARD);
2266 } 3288 }
2267 3289
2268 /* now that the requets is going, we loop toll we have a result */ 3290 /* now that the request is going, we loop till we have a result */
2269 frame->data = (void *)state; 3291 frame->data = (void *)state;
2270 frame->prepare = prepare_schedule; 3292 frame->prepare = prepare_schedule;
2271 frame->check = slf_check_aio_req; 3293 frame->check = slf_check_aio_req;
2272} 3294}
2273 3295
… …
2280 3302
2281 XSRETURN_EMPTY; 3303 XSRETURN_EMPTY;
2282} 3304}
2283 3305
2284/*****************************************************************************/ 3306/*****************************************************************************/
3307
3308#if CORO_CLONE
3309# include "clone.c"
3310#endif
3311
3312/*****************************************************************************/
3313
3314static SV *
3315coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3316{
3317 SV *coro_sv;
3318 struct coro *coro;
3319 MAGIC *mg;
3320 HV *hv;
3321 SV *cb;
3322 int i;
3323
3324 if (argc > 0)
3325 {
3326 cb = s_get_cv_croak (argv [0]);
3327
3328 if (!is_coro)
3329 {
3330 if (CvISXSUB (cb))
3331 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3332
3333 if (!CvROOT (cb))
3334 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3335 }
3336 }
3337
3338 Newz (0, coro, 1, struct coro);
3339 coro->args = newAV ();
3340 coro->flags = CF_NEW;
3341
3342 if (coro_first) coro_first->prev = coro;
3343 coro->next = coro_first;
3344 coro_first = coro;
3345
3346 coro->hv = hv = newHV ();
3347 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3348 mg->mg_flags |= MGf_DUP;
3349 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3350
3351 if (argc > 0)
3352 {
3353 av_extend (coro->args, argc + is_coro - 1);
3354
3355 if (is_coro)
3356 {
3357 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3358 cb = (SV *)cv_coro_run;
3359 }
3360
3361 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3362
3363 for (i = 1; i < argc; i++)
3364 av_push (coro->args, newSVsv (argv [i]));
3365 }
3366
3367 return coro_sv;
3368}
3369
3370#ifndef __cplusplus
3371ecb_cold XS(boot_Coro__State);
3372#endif
3373
3374#if CORO_JIT
3375
3376static void ecb_noinline ecb_cold
3377pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3378{
3379 dSP;
3380 AV *av = newAV ();
3381
3382 av_store (av, 3, newSVuv (d));
3383 av_store (av, 2, newSVuv (c));
3384 av_store (av, 1, newSVuv (b));
3385 av_store (av, 0, newSVuv (a));
3386
3387 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3388
3389 PUTBACK;
3390}
3391
3392static void ecb_noinline ecb_cold
3393jit_init (pTHX)
3394{
3395 dSP;
3396 SV *load, *save;
3397 char *map_base;
3398 char *load_ptr, *save_ptr;
3399 STRLEN load_len, save_len, map_len;
3400 int count;
3401
3402 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3403
3404 PUSHMARK (SP);
3405 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3406 #include "state.h"
3407 count = call_pv ("Coro::State::_jit", G_ARRAY);
3408 SPAGAIN;
3409
3410 save = POPs; save_ptr = SvPVbyte (save, save_len);
3411 load = POPs; load_ptr = SvPVbyte (load, load_len);
3412
3413 map_len = load_len + save_len + 16;
3414
3415 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3416
3417 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3418
3419 load_perl_slots = (load_save_perl_slots_type)map_base;
3420 memcpy (map_base, load_ptr, load_len);
3421
3422 map_base += (load_len + 15) & ~15;
3423
3424 save_perl_slots = (load_save_perl_slots_type)map_base;
3425 memcpy (map_base, save_ptr, save_len);
3426
3427 /* we are good citizens and try to make the page read-only, so the evil evil */
3428 /* hackers might have it a bit more difficult */
3429 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3430
3431 PUTBACK;
3432 eval_pv ("undef &Coro::State::_jit", 1);
3433}
3434
3435#endif
2285 3436
2286MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3437MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2287 3438
2288PROTOTYPES: DISABLE 3439PROTOTYPES: DISABLE
2289 3440
… …
2292#ifdef USE_ITHREADS 3443#ifdef USE_ITHREADS
2293# if CORO_PTHREAD 3444# if CORO_PTHREAD
2294 coro_thx = PERL_GET_CONTEXT; 3445 coro_thx = PERL_GET_CONTEXT;
2295# endif 3446# endif
2296#endif 3447#endif
2297 BOOT_PAGESIZE; 3448 /* perl defines these to check for existance first, but why it doesn't */
3449 /* just create them one at init time is not clear to me, except for */
3450 /* programs trying to delete them, but... */
3451 /* anyway, we declare this as invalid and make sure they are initialised here */
3452 DEFSV;
3453 ERRSV;
3454
3455 cctx_current = cctx_new_empty ();
2298 3456
2299 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3457 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2300 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3458 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2301 3459
2302 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3460 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2322 3480
2323 { 3481 {
2324 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3482 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2325 3483
2326 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3484 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2327 hv_store_ent (PL_custom_op_names, slf, 3485 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2328 newSVpv ("coro_slf", 0), 0);
2329 3486
2330 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3487 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2331 hv_store_ent (PL_custom_op_descs, slf, 3488 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2332 newSVpv ("coro schedule like function", 0), 0);
2333 } 3489 }
2334 3490
2335 coroapi.ver = CORO_API_VERSION; 3491 coroapi.ver = CORO_API_VERSION;
2336 coroapi.rev = CORO_API_REVISION; 3492 coroapi.rev = CORO_API_REVISION;
2337 3493
… …
2342 coroapi.prepare_nop = prepare_nop; 3498 coroapi.prepare_nop = prepare_nop;
2343 coroapi.prepare_schedule = prepare_schedule; 3499 coroapi.prepare_schedule = prepare_schedule;
2344 coroapi.prepare_cede = prepare_cede; 3500 coroapi.prepare_cede = prepare_cede;
2345 coroapi.prepare_cede_notself = prepare_cede_notself; 3501 coroapi.prepare_cede_notself = prepare_cede_notself;
2346 3502
2347 { 3503 time_init (aTHX);
2348 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2349 3504
2350 if (!svp) croak ("Time::HiRes is required");
2351 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2352
2353 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2354 }
2355
2356 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3505 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3506#if CORO_JIT
3507 PUTBACK;
3508 jit_init (aTHX);
3509 SPAGAIN;
3510#endif
2357} 3511}
2358 3512
2359SV * 3513SV *
2360new (char *klass, ...) 3514new (SV *klass, ...)
3515 ALIAS:
3516 Coro::new = 1
2361 CODE: 3517 CODE:
2362{ 3518 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2363 struct coro *coro; 3519 OUTPUT:
2364 MAGIC *mg;
2365 HV *hv;
2366 int i;
2367
2368 Newz (0, coro, 1, struct coro);
2369 coro->args = newAV ();
2370 coro->flags = CF_NEW;
2371
2372 if (coro_first) coro_first->prev = coro;
2373 coro->next = coro_first;
2374 coro_first = coro;
2375
2376 coro->hv = hv = newHV ();
2377 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2378 mg->mg_flags |= MGf_DUP;
2379 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2380
2381 av_extend (coro->args, items - 1);
2382 for (i = 1; i < items; i++)
2383 av_push (coro->args, newSVsv (ST (i)));
2384}
2385 OUTPUT:
2386 RETVAL 3520 RETVAL
2387 3521
2388void 3522void
2389transfer (...) 3523transfer (...)
2390 PROTOTYPE: $$ 3524 PROTOTYPE: $$
2391 CODE: 3525 CODE:
2392 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3526 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2393 3527
2394bool 3528SV *
2395_destroy (SV *coro_sv) 3529clone (Coro::State coro)
2396 CODE: 3530 CODE:
2397 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3531{
3532#if CORO_CLONE
3533 struct coro *ncoro = coro_clone (aTHX_ coro);
3534 MAGIC *mg;
3535 /* TODO: too much duplication */
3536 ncoro->hv = newHV ();
3537 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3538 mg->mg_flags |= MGf_DUP;
3539 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3540#else
3541 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3542#endif
3543}
2398 OUTPUT: 3544 OUTPUT:
2399 RETVAL 3545 RETVAL
2400
2401void
2402_exit (int code)
2403 PROTOTYPE: $
2404 CODE:
2405 _exit (code);
2406 3546
2407int 3547int
2408cctx_stacksize (int new_stacksize = 0) 3548cctx_stacksize (int new_stacksize = 0)
2409 PROTOTYPE: ;$ 3549 PROTOTYPE: ;$
2410 CODE: 3550 CODE:
… …
2446void 3586void
2447list () 3587list ()
2448 PROTOTYPE: 3588 PROTOTYPE:
2449 PPCODE: 3589 PPCODE:
2450{ 3590{
2451 struct coro *coro; 3591 struct coro *coro;
2452 for (coro = coro_first; coro; coro = coro->next) 3592 for (coro = coro_first; coro; coro = coro->next)
2453 if (coro->hv) 3593 if (coro->hv)
2454 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3594 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2455} 3595}
2456 3596
… …
2460 eval = 1 3600 eval = 1
2461 CODE: 3601 CODE:
2462{ 3602{
2463 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3603 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2464 { 3604 {
2465 struct coro temp; 3605 struct coro *current = SvSTATE_current;
3606 struct CoroSLF slf_save;
2466 3607
2467 if (!(coro->flags & CF_RUNNING)) 3608 if (current != coro)
2468 { 3609 {
2469 PUTBACK; 3610 PUTBACK;
2470 save_perl (aTHX_ &temp); 3611 save_perl (aTHX_ current);
2471 load_perl (aTHX_ coro); 3612 load_perl (aTHX_ coro);
3613 /* the coro is most likely in an active SLF call.
3614 * while not strictly required (the code we execute is
3615 * not allowed to call any SLF functions), it's cleaner
3616 * to reinitialise the slf_frame and restore it later.
3617 * This might one day allow us to actually do SLF calls
3618 * from code executed here.
3619 */
3620 slf_save = slf_frame;
3621 slf_frame.prepare = 0;
3622 SPAGAIN;
2472 } 3623 }
2473 3624
2474 {
2475 dSP;
2476 ENTER;
2477 SAVETMPS;
2478 PUTBACK;
2479 PUSHSTACK; 3625 PUSHSTACK;
3626
2480 PUSHMARK (SP); 3627 PUSHMARK (SP);
3628 PUTBACK;
2481 3629
2482 if (ix) 3630 if (ix)
2483 eval_sv (coderef, 0); 3631 eval_sv (coderef, 0);
2484 else 3632 else
2485 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3633 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2486 3634
2487 POPSTACK; 3635 POPSTACK;
2488 SPAGAIN; 3636 SPAGAIN;
2489 FREETMPS;
2490 LEAVE;
2491 PUTBACK;
2492 }
2493 3637
2494 if (!(coro->flags & CF_RUNNING)) 3638 if (current != coro)
2495 { 3639 {
3640 PUTBACK;
3641 slf_frame = slf_save;
2496 save_perl (aTHX_ coro); 3642 save_perl (aTHX_ coro);
2497 load_perl (aTHX_ &temp); 3643 load_perl (aTHX_ current);
2498 SPAGAIN; 3644 SPAGAIN;
2499 } 3645 }
2500 } 3646 }
2501} 3647}
2502 3648
… …
2505 PROTOTYPE: $ 3651 PROTOTYPE: $
2506 ALIAS: 3652 ALIAS:
2507 is_ready = CF_READY 3653 is_ready = CF_READY
2508 is_running = CF_RUNNING 3654 is_running = CF_RUNNING
2509 is_new = CF_NEW 3655 is_new = CF_NEW
2510 is_destroyed = CF_DESTROYED 3656 is_destroyed = CF_ZOMBIE
3657 is_zombie = CF_ZOMBIE
3658 is_suspended = CF_SUSPENDED
2511 CODE: 3659 CODE:
2512 RETVAL = boolSV (coro->flags & ix); 3660 RETVAL = boolSV (coro->flags & ix);
2513 OUTPUT: 3661 OUTPUT:
2514 RETVAL 3662 RETVAL
2515 3663
2516void 3664void
2517throw (Coro::State self, SV *throw = &PL_sv_undef) 3665throw (SV *self, SV *exception = &PL_sv_undef)
2518 PROTOTYPE: $;$ 3666 PROTOTYPE: $;$
2519 CODE: 3667 CODE:
2520{ 3668{
3669 struct coro *coro = SvSTATE (self);
2521 struct coro *current = SvSTATE_current; 3670 struct coro *current = SvSTATE_current;
2522 SV **throwp = self == current ? &coro_throw : &self->throw; 3671 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2523 SvREFCNT_dec (*throwp); 3672 SvREFCNT_dec (*exceptionp);
2524 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3673 SvGETMAGIC (exception);
3674 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3675
3676 api_ready (aTHX_ self);
2525} 3677}
2526 3678
2527void 3679void
2528api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3680api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2529 PROTOTYPE: $;$ 3681 PROTOTYPE: $;$
… …
2531 3683
2532SV * 3684SV *
2533has_cctx (Coro::State coro) 3685has_cctx (Coro::State coro)
2534 PROTOTYPE: $ 3686 PROTOTYPE: $
2535 CODE: 3687 CODE:
2536 RETVAL = boolSV (!!coro->cctx); 3688 /* maybe manage the running flag differently */
3689 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2537 OUTPUT: 3690 OUTPUT:
2538 RETVAL 3691 RETVAL
2539 3692
2540int 3693int
2541is_traced (Coro::State coro) 3694is_traced (Coro::State coro)
… …
2561 3714
2562void 3715void
2563force_cctx () 3716force_cctx ()
2564 PROTOTYPE: 3717 PROTOTYPE:
2565 CODE: 3718 CODE:
2566 SvSTATE_current->cctx->idle_sp = 0; 3719 cctx_current->idle_sp = 0;
2567 3720
2568void 3721void
2569swap_defsv (Coro::State self) 3722swap_defsv (Coro::State self)
2570 PROTOTYPE: $ 3723 PROTOTYPE: $
2571 ALIAS: 3724 ALIAS:
… …
2579 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3732 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2580 3733
2581 SV *tmp = *src; *src = *dst; *dst = tmp; 3734 SV *tmp = *src; *src = *dst; *dst = tmp;
2582 } 3735 }
2583 3736
3737void
3738cancel (Coro::State self)
3739 CODE:
3740 coro_state_destroy (aTHX_ self);
3741
3742SV *
3743enable_times (int enabled = enable_times)
3744 CODE:
3745{
3746 RETVAL = boolSV (enable_times);
3747
3748 if (enabled != enable_times)
3749 {
3750 enable_times = enabled;
3751
3752 coro_times_update ();
3753 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3754 }
3755}
3756 OUTPUT:
3757 RETVAL
3758
3759void
3760times (Coro::State self)
3761 PPCODE:
3762{
3763 struct coro *current = SvSTATE (coro_current);
3764
3765 if (ecb_expect_false (current == self))
3766 {
3767 coro_times_update ();
3768 coro_times_add (SvSTATE (coro_current));
3769 }
3770
3771 EXTEND (SP, 2);
3772 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3773 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3774
3775 if (ecb_expect_false (current == self))
3776 coro_times_sub (SvSTATE (coro_current));
3777}
3778
3779void
3780swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3781 CODE:
3782{
3783 struct coro *current = SvSTATE_current;
3784
3785 if (current == coro)
3786 SWAP_SVS (current);
3787
3788 if (!coro->swap_sv)
3789 coro->swap_sv = newAV ();
3790
3791 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3792 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3793
3794 if (current == coro)
3795 SWAP_SVS (current);
3796}
3797
2584 3798
2585MODULE = Coro::State PACKAGE = Coro 3799MODULE = Coro::State PACKAGE = Coro
2586 3800
2587BOOT: 3801BOOT:
2588{ 3802{
2589 int i;
2590
2591 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2592 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3803 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2593 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3804 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2594 3805 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2595 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3806 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2596 SvREADONLY_on (coro_current); 3807 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3808 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3809 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3810 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3811
3812 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3813 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3814 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3815 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2597 3816
2598 coro_stash = gv_stashpv ("Coro", TRUE); 3817 coro_stash = gv_stashpv ("Coro", TRUE);
2599 3818
2600 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3819 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2601 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3820 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2602 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3821 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2603 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3822 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2604 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3823 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2605 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3824 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2606
2607 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2608 coro_ready[i] = newAV ();
2609 3825
2610 { 3826 {
2611 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3827 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2612 3828
2613 coroapi.schedule = api_schedule; 3829 coroapi.schedule = api_schedule;
3830 coroapi.schedule_to = api_schedule_to;
2614 coroapi.cede = api_cede; 3831 coroapi.cede = api_cede;
2615 coroapi.cede_notself = api_cede_notself; 3832 coroapi.cede_notself = api_cede_notself;
2616 coroapi.ready = api_ready; 3833 coroapi.ready = api_ready;
2617 coroapi.is_ready = api_is_ready; 3834 coroapi.is_ready = api_is_ready;
2618 coroapi.nready = coro_nready; 3835 coroapi.nready = coro_nready;
2619 coroapi.current = coro_current; 3836 coroapi.current = coro_current;
2620 3837
2621 GCoroAPI = &coroapi; 3838 /*GCoroAPI = &coroapi;*/
2622 sv_setiv (sv, (IV)&coroapi); 3839 sv_setiv (sv, (IV)&coroapi);
2623 SvREADONLY_on (sv); 3840 SvREADONLY_on (sv);
2624 } 3841 }
2625} 3842}
3843
3844SV *
3845async (...)
3846 PROTOTYPE: &@
3847 CODE:
3848 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3849 api_ready (aTHX_ RETVAL);
3850 OUTPUT:
3851 RETVAL
3852
3853void
3854_destroy (Coro::State coro)
3855 CODE:
3856 /* used by the manager thread */
3857 coro_state_destroy (aTHX_ coro);
3858
3859void
3860on_destroy (Coro::State coro, SV *cb)
3861 CODE:
3862 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3863
3864void
3865join (...)
3866 CODE:
3867 CORO_EXECUTE_SLF_XS (slf_init_join);
3868
3869void
3870terminate (...)
3871 CODE:
3872 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3873
3874void
3875cancel (...)
3876 CODE:
3877 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3878
3879int
3880safe_cancel (Coro::State self, ...)
3881 C_ARGS: aTHX_ self, &ST (1), items - 1
2626 3882
2627void 3883void
2628schedule (...) 3884schedule (...)
2629 CODE: 3885 CODE:
2630 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3886 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3887
3888void
3889schedule_to (...)
3890 CODE:
3891 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3892
3893void
3894cede_to (...)
3895 CODE:
3896 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2631 3897
2632void 3898void
2633cede (...) 3899cede (...)
2634 CODE: 3900 CODE:
2635 CORO_EXECUTE_SLF_XS (slf_init_cede); 3901 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2649void 3915void
2650_set_readyhook (SV *hook) 3916_set_readyhook (SV *hook)
2651 PROTOTYPE: $ 3917 PROTOTYPE: $
2652 CODE: 3918 CODE:
2653 SvREFCNT_dec (coro_readyhook); 3919 SvREFCNT_dec (coro_readyhook);
3920 SvGETMAGIC (hook);
3921 if (SvOK (hook))
3922 {
2654 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3923 coro_readyhook = newSVsv (hook);
3924 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3925 }
3926 else
3927 {
3928 coro_readyhook = 0;
3929 CORO_READYHOOK = 0;
3930 }
2655 3931
2656int 3932int
2657prio (Coro::State coro, int newprio = 0) 3933prio (Coro::State coro, int newprio = 0)
2658 PROTOTYPE: $;$ 3934 PROTOTYPE: $;$
2659 ALIAS: 3935 ALIAS:
… …
2665 if (items > 1) 3941 if (items > 1)
2666 { 3942 {
2667 if (ix) 3943 if (ix)
2668 newprio = coro->prio - newprio; 3944 newprio = coro->prio - newprio;
2669 3945
2670 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3946 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2671 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3947 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2672 3948
2673 coro->prio = newprio; 3949 coro->prio = newprio;
2674 } 3950 }
2675} 3951}
2676 OUTPUT: 3952 OUTPUT:
… …
2690 CODE: 3966 CODE:
2691 RETVAL = coro_nready; 3967 RETVAL = coro_nready;
2692 OUTPUT: 3968 OUTPUT:
2693 RETVAL 3969 RETVAL
2694 3970
2695# for async_pool speedup
2696void 3971void
2697_pool_1 (SV *cb) 3972suspend (Coro::State self)
3973 PROTOTYPE: $
2698 CODE: 3974 CODE:
2699{ 3975 self->flags |= CF_SUSPENDED;
2700 HV *hv = (HV *)SvRV (coro_current);
2701 struct coro *coro = SvSTATE_hv ((SV *)hv);
2702 AV *defav = GvAV (PL_defgv);
2703 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2704 AV *invoke_av;
2705 int i, len;
2706 3976
2707 if (!invoke) 3977void
3978resume (Coro::State self)
3979 PROTOTYPE: $
3980 CODE:
3981 self->flags &= ~CF_SUSPENDED;
3982
3983void
3984_pool_handler (...)
3985 CODE:
3986 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3987
3988void
3989async_pool (SV *cv, ...)
3990 PROTOTYPE: &@
3991 PPCODE:
3992{
3993 HV *hv = (HV *)av_pop (av_async_pool);
3994 AV *av = newAV ();
3995 SV *cb = ST (0);
3996 int i;
3997
3998 av_extend (av, items - 2);
3999 for (i = 1; i < items; ++i)
4000 av_push (av, SvREFCNT_inc_NN (ST (i)));
4001
4002 if ((SV *)hv == &PL_sv_undef)
2708 { 4003 {
2709 SV *old = PL_diehook; 4004 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2710 PL_diehook = 0; 4005 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2711 SvREFCNT_dec (old); 4006 SvREFCNT_dec (sv);
2712 croak ("\3async_pool terminate\2\n");
2713 } 4007 }
2714 4008
2715 SvREFCNT_dec (coro->saved_deffh);
2716 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2717
2718 hv_store (hv, "desc", sizeof ("desc") - 1,
2719 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2720
2721 invoke_av = (AV *)SvRV (invoke);
2722 len = av_len (invoke_av);
2723
2724 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2725
2726 if (len > 0)
2727 { 4009 {
2728 av_fill (defav, len - 1); 4010 struct coro *coro = SvSTATE_hv (hv);
2729 for (i = 0; i < len; ++i) 4011
2730 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4012 assert (!coro->invoke_cb);
4013 assert (!coro->invoke_av);
4014 coro->invoke_cb = SvREFCNT_inc (cb);
4015 coro->invoke_av = av;
2731 } 4016 }
4017
4018 api_ready (aTHX_ (SV *)hv);
4019
4020 if (GIMME_V != G_VOID)
4021 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4022 else
4023 SvREFCNT_dec (hv);
2732} 4024}
4025
4026SV *
4027rouse_cb ()
4028 PROTOTYPE:
4029 CODE:
4030 RETVAL = coro_new_rouse_cb (aTHX);
4031 OUTPUT:
4032 RETVAL
2733 4033
2734void 4034void
2735_pool_2 (SV *cb) 4035rouse_wait (...)
4036 PROTOTYPE: ;$
4037 PPCODE:
4038 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4039
4040void
4041on_enter (SV *block)
4042 ALIAS:
4043 on_leave = 1
4044 PROTOTYPE: &
2736 CODE: 4045 CODE:
2737{ 4046{
2738 HV *hv = (HV *)SvRV (coro_current);
2739 struct coro *coro = SvSTATE_hv ((SV *)hv); 4047 struct coro *coro = SvSTATE_current;
4048 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2740 4049
2741 sv_setsv (cb, &PL_sv_undef); 4050 block = s_get_cv_croak (block);
2742 4051
2743 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4052 if (!*avp)
2744 coro->saved_deffh = 0; 4053 *avp = newAV ();
2745 4054
2746 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4055 av_push (*avp, SvREFCNT_inc (block));
2747 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2748 {
2749 SV *old = PL_diehook;
2750 PL_diehook = 0;
2751 SvREFCNT_dec (old);
2752 croak ("\3async_pool terminate\2\n");
2753 }
2754 4056
2755 av_clear (GvAV (PL_defgv)); 4057 if (!ix)
2756 hv_store (hv, "desc", sizeof ("desc") - 1, 4058 on_enterleave_call (aTHX_ block);
2757 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2758 4059
2759 coro->prio = 0; 4060 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2760 4061 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2761 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4062 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2762 api_trace (aTHX_ coro_current, 0);
2763
2764 av_push (av_async_pool, newSVsv (coro_current));
2765} 4063}
2766 4064
2767 4065
2768MODULE = Coro::State PACKAGE = PerlIO::cede 4066MODULE = Coro::State PACKAGE = PerlIO::cede
2769 4067
… …
2772 4070
2773 4071
2774MODULE = Coro::State PACKAGE = Coro::Semaphore 4072MODULE = Coro::State PACKAGE = Coro::Semaphore
2775 4073
2776SV * 4074SV *
2777new (SV *klass, SV *count_ = 0) 4075new (SV *klass, SV *count = 0)
2778 CODE: 4076 CODE:
2779{ 4077{
2780 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4078 int semcnt = 1;
2781 AV *av = newAV ();
2782 SV **ary;
2783 4079
2784 /* unfortunately, building manually saves memory */ 4080 if (count)
2785 Newx (ary, 2, SV *); 4081 {
2786 AvALLOC (av) = ary; 4082 SvGETMAGIC (count);
2787 AvARRAY (av) = ary;
2788 AvMAX (av) = 1;
2789 AvFILLp (av) = 0;
2790 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2791 4083
2792 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4084 if (SvOK (count))
4085 semcnt = SvIV (count);
4086 }
4087
4088 RETVAL = sv_bless (
4089 coro_waitarray_new (aTHX_ semcnt),
4090 GvSTASH (CvGV (cv))
4091 );
2793} 4092}
4093 OUTPUT:
4094 RETVAL
4095
4096# helper for Coro::Channel and others
4097SV *
4098_alloc (int count)
4099 CODE:
4100 RETVAL = coro_waitarray_new (aTHX_ count);
2794 OUTPUT: 4101 OUTPUT:
2795 RETVAL 4102 RETVAL
2796 4103
2797SV * 4104SV *
2798count (SV *self) 4105count (SV *self)
… …
2807 adjust = 1 4114 adjust = 1
2808 CODE: 4115 CODE:
2809 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4116 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2810 4117
2811void 4118void
2812down (SV *self) 4119down (...)
2813 CODE: 4120 CODE:
2814 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4121 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4122
4123void
4124wait (...)
4125 CODE:
4126 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2815 4127
2816void 4128void
2817try (SV *self) 4129try (SV *self)
2818 PPCODE: 4130 PPCODE:
2819{ 4131{
… …
2831 XSRETURN_NO; 4143 XSRETURN_NO;
2832} 4144}
2833 4145
2834void 4146void
2835waiters (SV *self) 4147waiters (SV *self)
2836 CODE: 4148 PPCODE:
2837{ 4149{
2838 AV *av = (AV *)SvRV (self); 4150 AV *av = (AV *)SvRV (self);
4151 int wcount = AvFILLp (av) + 1 - 1;
2839 4152
2840 if (GIMME_V == G_SCALAR) 4153 if (GIMME_V == G_SCALAR)
2841 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4154 XPUSHs (sv_2mortal (newSViv (wcount)));
2842 else 4155 else
2843 { 4156 {
2844 int i; 4157 int i;
2845 EXTEND (SP, AvFILLp (av) + 1 - 1); 4158 EXTEND (SP, wcount);
2846 for (i = 1; i <= AvFILLp (av); ++i) 4159 for (i = 1; i <= wcount; ++i)
2847 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4160 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2848 } 4161 }
2849} 4162}
4163
4164MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4165
4166void
4167_may_delete (SV *sem, int count, unsigned int extra_refs)
4168 PPCODE:
4169{
4170 AV *av = (AV *)SvRV (sem);
4171
4172 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4173 && AvFILLp (av) == 0 /* no waiters, just count */
4174 && SvIV (AvARRAY (av)[0]) == count)
4175 XSRETURN_YES;
4176
4177 XSRETURN_NO;
4178}
4179
4180MODULE = Coro::State PACKAGE = Coro::Signal
4181
4182SV *
4183new (SV *klass)
4184 CODE:
4185 RETVAL = sv_bless (
4186 coro_waitarray_new (aTHX_ 0),
4187 GvSTASH (CvGV (cv))
4188 );
4189 OUTPUT:
4190 RETVAL
4191
4192void
4193wait (...)
4194 CODE:
4195 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4196
4197void
4198broadcast (SV *self)
4199 CODE:
4200{
4201 AV *av = (AV *)SvRV (self);
4202 coro_signal_wake (aTHX_ av, AvFILLp (av));
4203}
4204
4205void
4206send (SV *self)
4207 CODE:
4208{
4209 AV *av = (AV *)SvRV (self);
4210
4211 if (AvFILLp (av))
4212 coro_signal_wake (aTHX_ av, 1);
4213 else
4214 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4215}
4216
4217IV
4218awaited (SV *self)
4219 CODE:
4220 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4221 OUTPUT:
4222 RETVAL
2850 4223
2851 4224
2852MODULE = Coro::State PACKAGE = Coro::AnyEvent 4225MODULE = Coro::State PACKAGE = Coro::AnyEvent
2853 4226
2854BOOT: 4227BOOT:
… …
2856 4229
2857void 4230void
2858_schedule (...) 4231_schedule (...)
2859 CODE: 4232 CODE:
2860{ 4233{
2861 static int incede; 4234 static int incede;
2862 4235
2863 api_cede_notself (aTHX); 4236 api_cede_notself (aTHX);
2864 4237
2865 ++incede; 4238 ++incede;
2866 while (coro_nready >= incede && api_cede (aTHX)) 4239 while (coro_nready >= incede && api_cede (aTHX))
… …
2882 4255
2883void 4256void
2884_register (char *target, char *proto, SV *req) 4257_register (char *target, char *proto, SV *req)
2885 CODE: 4258 CODE:
2886{ 4259{
2887 HV *st; 4260 SV *req_cv = s_get_cv_croak (req);
2888 GV *gvp;
2889 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2890 /* newXSproto doesn't return the CV on 5.8 */ 4261 /* newXSproto doesn't return the CV on 5.8 */
2891 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4262 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2892 sv_setpv ((SV *)slf_cv, proto); 4263 sv_setpv ((SV *)slf_cv, proto);
2893 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4264 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2894} 4265}
2895 4266
4267MODULE = Coro::State PACKAGE = Coro::Select
4268
4269void
4270patch_pp_sselect ()
4271 CODE:
4272 if (!coro_old_pp_sselect)
4273 {
4274 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4275 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4276 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4277 }
4278
4279void
4280unpatch_pp_sselect ()
4281 CODE:
4282 if (coro_old_pp_sselect)
4283 {
4284 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4285 coro_old_pp_sselect = 0;
4286 }
4287
4288MODULE = Coro::State PACKAGE = Coro::Util
4289
4290void
4291_exit (int code)
4292 CODE:
4293 _exit (code);
4294
4295NV
4296time ()
4297 CODE:
4298 RETVAL = nvtime (aTHX);
4299 OUTPUT:
4300 RETVAL
4301
4302NV
4303gettimeofday ()
4304 PPCODE:
4305{
4306 UV tv [2];
4307 u2time (aTHX_ tv);
4308 EXTEND (SP, 2);
4309 PUSHs (sv_2mortal (newSVuv (tv [0])));
4310 PUSHs (sv_2mortal (newSVuv (tv [1])));
4311}
4312

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