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Comparing Coro/Coro/State.xs (file contents):
Revision 1.308 by root, Wed Nov 19 15:09:57 2008 UTC vs.
Revision 1.442 by root, Tue Mar 4 06:13:24 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 */ 59# define setjmp _setjmp /* deep magic */
22#else 60#else
23# include <inttypes.h> /* most portable stdint.h */ 61# include <inttypes.h> /* most portable stdint.h */
24#endif 62#endif
25 63
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 64/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 65static int cctx_max_idle = 4;
55 66
56#define PERL_VERSION_ATLEAST(a,b,c) \ 67#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 68# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD
111#endif
112
113#ifndef CORO_STACKGUARD
114# define CORO_STACKGUARD 0
115#endif 69#endif
116 70
117/* prefer perl internal functions over our own? */ 71/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 72#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 73# define CORO_PREFER_PERL_FUNCTIONS 0
… …
127#else 81#else
128# define dSTACKLEVEL volatile void *stacklevel 82# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 83# define STACKLEVEL ((void *)&stacklevel)
130#endif 84#endif
131 85
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 86#define IN_DESTRUCT PL_dirty
133
134#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
138#else
139# define attribute(x)
140# define expect(expr,value) (expr)
141# define INLINE static
142#endif
143
144#define expect_false(expr) expect ((expr) != 0, 0)
145#define expect_true(expr) expect ((expr) != 0, 1)
146
147#define NOINLINE attribute ((noinline))
148 87
149#include "CoroAPI.h" 88#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */ 89#define GCoroAPI (&coroapi) /* very sneaky */
151 90
152#ifdef USE_ITHREADS 91#ifdef USE_ITHREADS
153# if CORO_PTHREAD 92# if CORO_PTHREAD
154static void *coro_thx; 93static void *coro_thx;
155# endif 94# endif
156#endif 95#endif
157 96
97#ifdef __linux
98# include <time.h> /* for timespec */
99# include <syscall.h> /* for SYS_* */
100# ifdef SYS_clock_gettime
101# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
102# define CORO_CLOCK_MONOTONIC 1
103# define CORO_CLOCK_THREAD_CPUTIME_ID 3
104# endif
105#endif
106
158static double (*nvtime)(); /* so why doesn't it take void? */ 107static double (*nvtime)(); /* so why doesn't it take void? */
108static void (*u2time)(pTHX_ UV ret[2]);
159 109
160/* we hijack an hopefully unused CV flag for our purposes */ 110/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 111#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 112static OP *pp_slf (pTHX);
113static void slf_destroy (pTHX_ struct coro *coro);
163 114
164static U32 cctx_gen; 115static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 116static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 117static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 118static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 119static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 120static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 121static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 122
123static AV *av_destroy; /* destruction queue */
124static SV *sv_manager; /* the manager coro */
125static SV *sv_idle; /* $Coro::idle */
126
172static GV *irsgv; /* $/ */ 127static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 128static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 129static SV *rv_diehook;
175static SV *rv_warnhook; 130static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 131static HV *hv_sig; /* %SIG */
177 132
178/* async_pool helper stuff */ 133/* async_pool helper stuff */
179static SV *sv_pool_rss; 134static SV *sv_pool_rss;
180static SV *sv_pool_size; 135static SV *sv_pool_size;
136static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 137static AV *av_async_pool; /* idle pool */
138static SV *sv_Coro; /* class string */
139static CV *cv_pool_handler;
182 140
183/* Coro::AnyEvent */ 141/* Coro::AnyEvent */
184static SV *sv_activity; 142static SV *sv_activity;
185 143
144/* enable processtime/realtime profiling */
145static char enable_times;
146typedef U32 coro_ts[2];
147static coro_ts time_real, time_cpu;
148static char times_valid;
149
186static struct coro_cctx *cctx_first; 150static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 151static int cctx_count, cctx_idle;
188 152
189enum { 153enum
154{
190 CC_MAPPED = 0x01, 155 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 156 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 157 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 158 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 159 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
199typedef struct coro_cctx 164typedef struct coro_cctx
200{ 165{
201 struct coro_cctx *next; 166 struct coro_cctx *next;
202 167
203 /* the stack */ 168 /* the stack */
204 void *sptr; 169 struct coro_stack stack;
205 size_t ssize;
206 170
207 /* cpu state */ 171 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 172 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
173#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 174 JMPENV *idle_te; /* same as idle_sp, but for top_env */
175#endif
210 JMPENV *top_env; 176 JMPENV *top_env;
211 coro_context cctx; 177 coro_context cctx;
212 178
213 U32 gen; 179 U32 gen;
214#if CORO_USE_VALGRIND 180#if CORO_USE_VALGRIND
215 int valgrind_id; 181 int valgrind_id;
216#endif 182#endif
217 unsigned char flags; 183 unsigned char flags;
218} coro_cctx; 184} coro_cctx;
219 185
186static coro_cctx *cctx_current; /* the currently running cctx */
187
188/*****************************************************************************/
189
190static MGVTBL coro_state_vtbl;
191
220enum { 192enum
193{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 194 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 195 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 196 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 197 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
198 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
199 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 200};
226 201
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 202/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 203typedef struct
229{ 204{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 205 #define VARx(name,expr,type) type name;
235# include "state.h" 206 #include "state.h"
236#undef VAR
237} perl_slots; 207} perl_slots;
238 208
209/* how many context stack entries do we need for perl_slots */
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 210#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 211
241/* this is a structure representing a perl-level coroutine */ 212/* this is a structure representing a perl-level coroutine */
242struct coro { 213struct coro
214{
243 /* the C coroutine allocated to this perl coroutine, if any */ 215 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 216 coro_cctx *cctx;
217
218 /* ready queue */
219 struct coro *next_ready;
245 220
246 /* state data */ 221 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 222 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 223 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 224 perl_slots *slot; /* basically the saved sp */
250 225
251 CV *startcv; /* the CV to execute */ 226 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 227 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 228 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 229 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
257 230
258 /* statistics */ 231 /* statistics */
259 int usecount; /* number of transfers to this coro */ 232 int usecount; /* number of transfers to this coro */
260 233
261 /* coro process data */ 234 /* coro process data */
262 int prio; 235 int prio;
263 SV *except; /* exception to be thrown */ 236 SV *except; /* exception to be thrown */
264 SV *rouse_cb; 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 */
265 240
266 /* async_pool */ 241 /* async_pool */
267 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;
268 255
269 /* linked list */ 256 /* linked list */
270 struct coro *next, *prev; 257 struct coro *next, *prev;
271}; 258};
272 259
273typedef struct coro *Coro__State; 260typedef struct coro *Coro__State;
274typedef struct coro *Coro__State_or_hashref; 261typedef struct coro *Coro__State_or_hashref;
275 262
276/* the following variables are effectively part of the perl context */ 263/* the following variables are effectively part of the perl context */
277/* and get copied between struct coro and these variables */ 264/* and get copied between struct coro and these variables */
278/* the mainr easonw e don't support windows process emulation */ 265/* the main reason we don't support windows process emulation */
279static struct CoroSLF slf_frame; /* the current slf frame */ 266static struct CoroSLF slf_frame; /* the current slf frame */
280 267
281/** Coro ********************************************************************/ 268/** Coro ********************************************************************/
282 269
283#define PRIO_MAX 3 270#define CORO_PRIO_MAX 3
284#define PRIO_HIGH 1 271#define CORO_PRIO_HIGH 1
285#define PRIO_NORMAL 0 272#define CORO_PRIO_NORMAL 0
286#define PRIO_LOW -1 273#define CORO_PRIO_LOW -1
287#define PRIO_IDLE -3 274#define CORO_PRIO_IDLE -3
288#define PRIO_MIN -4 275#define CORO_PRIO_MIN -4
289 276
290/* for Coro.pm */ 277/* for Coro.pm */
291static SV *coro_current; 278static SV *coro_current;
292static SV *coro_readyhook; 279static SV *coro_readyhook;
293static 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;
294static struct coro *coro_first; 282static struct coro *coro_first;
295#define coro_nready coroapi.nready 283#define coro_nready coroapi.nready
296 284
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
297/** lowlevel stuff **********************************************************/ 380/** lowlevel stuff **********************************************************/
298 381
299static SV * 382static SV * ecb_noinline
300coro_get_sv (pTHX_ const char *name, int create) 383coro_get_sv (pTHX_ const char *name, int create)
301{ 384{
302#if PERL_VERSION_ATLEAST (5,10,0) 385#if PERL_VERSION_ATLEAST (5,10,0)
303 /* 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 */
304 get_sv (name, create); 387 get_sv (name, create);
305#endif 388#endif
306 return get_sv (name, create); 389 return get_sv (name, create);
307} 390}
308 391
309static AV * 392static AV * ecb_noinline
310coro_get_av (pTHX_ const char *name, int create) 393coro_get_av (pTHX_ const char *name, int create)
311{ 394{
312#if PERL_VERSION_ATLEAST (5,10,0) 395#if PERL_VERSION_ATLEAST (5,10,0)
313 /* 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 */
314 get_av (name, create); 397 get_av (name, create);
315#endif 398#endif
316 return get_av (name, create); 399 return get_av (name, create);
317} 400}
318 401
319static HV * 402static HV * ecb_noinline
320coro_get_hv (pTHX_ const char *name, int create) 403coro_get_hv (pTHX_ const char *name, int create)
321{ 404{
322#if PERL_VERSION_ATLEAST (5,10,0) 405#if PERL_VERSION_ATLEAST (5,10,0)
323 /* 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 */
324 get_hv (name, create); 407 get_hv (name, create);
325#endif 408#endif
326 return get_hv (name, create); 409 return get_hv (name, create);
327} 410}
328 411
329/* may croak */ 412ecb_inline void
330INLINE CV * 413coro_times_update (void)
331coro_sv_2cv (SV *sv)
332{ 414{
333 HV *st; 415#ifdef coro_clock_gettime
334 GV *gvp; 416 struct timespec ts;
335 return sv_2cv (sv, &st, &gvp, 0);
336}
337 417
338static AV * 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 *
339coro_clone_padlist (pTHX_ CV *cv) 518coro_derive_padlist (pTHX_ CV *cv)
340{ 519{
341 AV *padlist = CvPADLIST (cv); 520 PADLIST *padlist = CvPADLIST (cv);
342 AV *newpadlist, *newpad; 521 PADLIST *newpadlist;
522 PAD *newpad;
523 PADOFFSET off = PadlistMAX (padlist) + 1;
343 524
344 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. */
345 AvREAL_off (newpadlist); 553 AvREAL_off (newpadlist);
346#if PERL_VERSION_ATLEAST (5,10,0)
347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
348#else
349 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
350#endif 554#endif
351 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
352 --AvFILLp (padlist);
353 555
354 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 556 /* Already extended to 2 elements by newPADLIST. */
355 av_store (newpadlist, 1, (SV *)newpad); 557 PadlistMAX (newpadlist) = 1;
558 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
559 PadlistARRAY (newpadlist)[1] = newpad;
356 560
357 return newpadlist; 561 return newpadlist;
358} 562}
359 563
360static void 564ecb_inline void
361free_padlist (pTHX_ AV *padlist) 565free_padlist (pTHX_ PADLIST *padlist)
362{ 566{
363 /* may be during global destruction */ 567 /* may be during global destruction */
364 if (SvREFCNT (padlist)) 568 if (!IN_DESTRUCT)
365 { 569 {
366 I32 i = AvFILLp (padlist); 570 I32 i = PadlistMAX (padlist);
367 while (i >= 0) 571
572 while (i > 0) /* special-case index 0 */
368 { 573 {
369 SV **svp = av_fetch (padlist, i--, FALSE); 574 /* we try to be extra-careful here */
575 PAD *pad = PadlistARRAY (padlist)[i--];
576
370 if (svp) 577 if (pad)
371 { 578 {
372 SV *sv; 579 I32 j = PadMAX (pad);
373 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 580
581 while (j >= 0)
374 SvREFCNT_dec (sv); 582 SvREFCNT_dec (PadARRAY (pad)[j--]);
375 583
584 PadMAX (pad) = -1;
376 SvREFCNT_dec (*svp); 585 SvREFCNT_dec (pad);
377 } 586 }
378 } 587 }
379 588
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);
380 SvREFCNT_dec ((SV*)padlist); 597 SvREFCNT_dec ((SV*)padlist);
598#endif
381 } 599 }
382} 600}
383 601
384static int 602static int
385coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 603coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
386{ 604{
387 AV *padlist; 605 PADLIST *padlist;
388 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;
389 608
390 /* casting is fun. */ 609 /* perl manages to free our internal AV and _then_ call us */
391 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 610 if (IN_DESTRUCT)
611 return 0;
612
613 while (len--)
392 free_padlist (aTHX_ padlist); 614 free_padlist (aTHX_ padlists[len]);
393
394 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
395 615
396 return 0; 616 return 0;
397} 617}
398
399#define CORO_MAGIC_type_cv 26
400#define CORO_MAGIC_type_state PERL_MAGIC_ext
401 618
402static MGVTBL coro_cv_vtbl = { 619static MGVTBL coro_cv_vtbl = {
403 0, 0, 0, 0, 620 0, 0, 0, 0,
404 coro_cv_free 621 coro_cv_free
405}; 622};
406 623
407#define CORO_MAGIC_NN(sv, type) \
408 (expect_true (SvMAGIC (sv)->mg_type == type) \
409 ? SvMAGIC (sv) \
410 : mg_find (sv, type))
411
412#define CORO_MAGIC(sv, type) \
413 (expect_true (SvMAGIC (sv)) \
414 ? CORO_MAGIC_NN (sv, type) \
415 : 0)
416
417#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
418#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
419
420INLINE struct coro *
421SvSTATE_ (pTHX_ SV *coro)
422{
423 HV *stash;
424 MAGIC *mg;
425
426 if (SvROK (coro))
427 coro = SvRV (coro);
428
429 if (expect_false (SvTYPE (coro) != SVt_PVHV))
430 croak ("Coro::State object required");
431
432 stash = SvSTASH (coro);
433 if (expect_false (stash != coro_stash && stash != coro_state_stash))
434 {
435 /* very slow, but rare, check */
436 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
437 croak ("Coro::State object required");
438 }
439
440 mg = CORO_MAGIC_state (coro);
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
445
446/* faster than SvSTATE, but expects a coroutine hv */
447#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
448#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
449
450/* the next two functions merely cache the padlists */ 624/* the next two functions merely cache the padlists */
451static void 625ecb_inline void
452get_padlist (pTHX_ CV *cv) 626get_padlist (pTHX_ CV *cv)
453{ 627{
454 MAGIC *mg = CORO_MAGIC_cv (cv); 628 MAGIC *mg = CORO_MAGIC_cv (cv);
455 AV *av; 629 size_t *lenp;
456 630
457 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 631 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
458 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 632 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
459 else 633 else
460 { 634 {
461#if CORO_PREFER_PERL_FUNCTIONS 635#if CORO_PREFER_PERL_FUNCTIONS
462 /* this is probably cleaner? but also slower! */ 636 /* this is probably cleaner? but also slower! */
463 /* in practise, it seems to be less stable */ 637 /* in practise, it seems to be less stable */
464 CV *cp = Perl_cv_clone (aTHX_ cv); 638 CV *cp = Perl_cv_clone (aTHX_ cv);
465 CvPADLIST (cv) = CvPADLIST (cp); 639 CvPADLIST (cv) = CvPADLIST (cp);
466 CvPADLIST (cp) = 0; 640 CvPADLIST (cp) = 0;
467 SvREFCNT_dec (cp); 641 SvREFCNT_dec (cp);
468#else 642#else
469 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 643 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
470#endif 644#endif
471 } 645 }
472} 646}
473 647
474static void 648ecb_inline void
475put_padlist (pTHX_ CV *cv) 649put_padlist (pTHX_ CV *cv)
476{ 650{
477 MAGIC *mg = CORO_MAGIC_cv (cv); 651 MAGIC *mg = CORO_MAGIC_cv (cv);
478 AV *av;
479 652
480 if (expect_false (!mg)) 653 if (ecb_expect_false (!mg))
654 {
481 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);
482 663
483 av = (AV *)mg->mg_obj; 664 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
484
485 if (expect_false (AvFILLp (av) >= AvMAX (av)))
486 av_extend (av, AvMAX (av) + 1);
487
488 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
489} 665}
490 666
491/** 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);
492 723
493static void 724static void
494load_perl (pTHX_ Coro__State c) 725load_perl (pTHX_ Coro__State c)
495{ 726{
496 perl_slots *slot = c->slot; 727 perl_slots *slot = c->slot;
497 c->slot = 0; 728 c->slot = 0;
498 729
499 PL_mainstack = c->mainstack; 730 PL_mainstack = c->mainstack;
500 731
501 GvSV (PL_defgv) = slot->defsv; 732#if CORO_JIT
502 GvAV (PL_defgv) = slot->defav; 733 load_perl_slots (slot);
503 GvSV (PL_errgv) = slot->errsv; 734#else
504 GvSV (irsgv) = slot->irsgv;
505
506 #define VAR(name,type) PL_ ## name = slot->name; 735 #define VARx(name,expr,type) expr = slot->name;
507 # include "state.h" 736 #include "state.h"
508 #undef VAR 737#endif
509 738
510 { 739 {
511 dSP; 740 dSP;
512 741
513 CV *cv; 742 CV *cv;
514 743
515 /* now do the ugly restore mess */ 744 /* now do the ugly restore mess */
516 while (expect_true (cv = (CV *)POPs)) 745 while (ecb_expect_true (cv = (CV *)POPs))
517 { 746 {
518 put_padlist (aTHX_ cv); /* mark this padlist as available */ 747 put_padlist (aTHX_ cv); /* mark this padlist as available */
519 CvDEPTH (cv) = PTR2IV (POPs); 748 CvDEPTH (cv) = PTR2IV (POPs);
520 CvPADLIST (cv) = (AV *)POPs; 749 CvPADLIST (cv) = (PADLIST *)POPs;
521 } 750 }
522 751
523 PUTBACK; 752 PUTBACK;
524 } 753 }
525 754
526 slf_frame = c->slf_frame; 755 slf_frame = c->slf_frame;
527 CORO_THROW = c->except; 756 CORO_THROW = c->except;
757
758 if (ecb_expect_false (enable_times))
759 {
760 if (ecb_expect_false (!times_valid))
761 coro_times_update ();
762
763 coro_times_sub (c);
764 }
765
766 if (ecb_expect_false (c->on_enter))
767 {
768 int i;
769
770 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
771 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
772 }
773
774 SWAP_SVS (c);
528} 775}
529 776
530static void 777static void
531save_perl (pTHX_ Coro__State c) 778save_perl (pTHX_ Coro__State c)
532{ 779{
780 SWAP_SVS (c);
781
782 if (ecb_expect_false (c->on_leave))
783 {
784 int i;
785
786 for (i = AvFILLp (c->on_leave); i >= 0; --i)
787 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
788 }
789
790 times_valid = 0;
791
792 if (ecb_expect_false (enable_times))
793 {
794 coro_times_update (); times_valid = 1;
795 coro_times_add (c);
796 }
797
533 c->except = CORO_THROW; 798 c->except = CORO_THROW;
534 c->slf_frame = slf_frame; 799 c->slf_frame = slf_frame;
535 800
536 { 801 {
537 dSP; 802 dSP;
… …
546 811
547 XPUSHs (Nullsv); 812 XPUSHs (Nullsv);
548 /* this loop was inspired by pp_caller */ 813 /* this loop was inspired by pp_caller */
549 for (;;) 814 for (;;)
550 { 815 {
551 while (expect_true (cxix >= 0)) 816 while (ecb_expect_true (cxix >= 0))
552 { 817 {
553 PERL_CONTEXT *cx = &ccstk[cxix--]; 818 PERL_CONTEXT *cx = &ccstk[cxix--];
554 819
555 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))
556 { 821 {
557 CV *cv = cx->blk_sub.cv; 822 CV *cv = cx->blk_sub.cv;
558 823
559 if (expect_true (CvDEPTH (cv))) 824 if (ecb_expect_true (CvDEPTH (cv)))
560 { 825 {
561 EXTEND (SP, 3); 826 EXTEND (SP, 3);
562 PUSHs ((SV *)CvPADLIST (cv)); 827 PUSHs ((SV *)CvPADLIST (cv));
563 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 828 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
564 PUSHs ((SV *)cv); 829 PUSHs ((SV *)cv);
… …
567 get_padlist (aTHX_ cv); 832 get_padlist (aTHX_ cv);
568 } 833 }
569 } 834 }
570 } 835 }
571 836
572 if (expect_true (top_si->si_type == PERLSI_MAIN)) 837 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
573 break; 838 break;
574 839
575 top_si = top_si->si_prev; 840 top_si = top_si->si_prev;
576 ccstk = top_si->si_cxstack; 841 ccstk = top_si->si_cxstack;
577 cxix = top_si->si_cxix; 842 cxix = top_si->si_cxix;
… …
579 844
580 PUTBACK; 845 PUTBACK;
581 } 846 }
582 847
583 /* allocate some space on the context stack for our purposes */ 848 /* allocate some space on the context stack for our purposes */
584 /* we manually unroll here, as usually 2 slots is enough */ 849 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
585 if (SLOT_COUNT >= 1) CXINC;
586 if (SLOT_COUNT >= 2) CXINC;
587 if (SLOT_COUNT >= 3) CXINC;
588 { 850 {
589 int i; 851 unsigned int i;
852
590 for (i = 3; i < SLOT_COUNT; ++i) 853 for (i = 0; i < SLOT_COUNT; ++i)
591 CXINC; 854 CXINC;
592 } 855
593 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 856 cxstack_ix -= SLOT_COUNT; /* undo allocation */
857 }
594 858
595 c->mainstack = PL_mainstack; 859 c->mainstack = PL_mainstack;
596 860
597 { 861 {
598 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 862 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
599 863
600 slot->defav = GvAV (PL_defgv); 864#if CORO_JIT
601 slot->defsv = DEFSV; 865 save_perl_slots (slot);
602 slot->errsv = ERRSV; 866#else
603 slot->irsgv = GvSV (irsgv);
604
605 #define VAR(name,type) slot->name = PL_ ## name; 867 #define VARx(name,expr,type) slot->name = expr;
606 # include "state.h" 868 #include "state.h"
607 #undef VAR 869#endif
608 } 870 }
609} 871}
610 872
611/* 873/*
612 * allocate various perl stacks. This is almost an exact copy 874 * allocate various perl stacks. This is almost an exact copy
… …
618# define coro_init_stacks(thx) init_stacks () 880# define coro_init_stacks(thx) init_stacks ()
619#else 881#else
620static void 882static void
621coro_init_stacks (pTHX) 883coro_init_stacks (pTHX)
622{ 884{
623 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() */
624 PL_curstackinfo->si_type = PERLSI_MAIN; 886 PL_curstackinfo->si_type = PERLSI_MAIN;
625 PL_curstack = PL_curstackinfo->si_stack; 887 PL_curstack = PL_curstackinfo->si_stack;
626 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 888 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
627 889
628 PL_stack_base = AvARRAY(PL_curstack); 890 PL_stack_base = AvARRAY(PL_curstack);
… …
643#endif 905#endif
644 906
645 New(54,PL_scopestack,8,I32); 907 New(54,PL_scopestack,8,I32);
646 PL_scopestack_ix = 0; 908 PL_scopestack_ix = 0;
647 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
648 913
649 New(54,PL_savestack,24,ANY); 914 New(54,PL_savestack,24,ANY);
650 PL_savestack_ix = 0; 915 PL_savestack_ix = 0;
651 PL_savestack_max = 24; 916 PL_savestack_max = 24;
652 917
… …
680 } 945 }
681 946
682 Safefree (PL_tmps_stack); 947 Safefree (PL_tmps_stack);
683 Safefree (PL_markstack); 948 Safefree (PL_markstack);
684 Safefree (PL_scopestack); 949 Safefree (PL_scopestack);
950#if HAS_SCOPESTACK_NAME
951 Safefree (PL_scopestack_name);
952#endif
685 Safefree (PL_savestack); 953 Safefree (PL_savestack);
686#if !PERL_VERSION_ATLEAST (5,10,0) 954#if !PERL_VERSION_ATLEAST (5,10,0)
687 Safefree (PL_retstack); 955 Safefree (PL_retstack);
688#endif 956#endif
689} 957}
690 958
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
691static size_t 968static size_t
692coro_rss (pTHX_ struct coro *coro) 969coro_rss (pTHX_ struct coro *coro)
693{ 970{
694 size_t rss = sizeof (*coro); 971 size_t rss = sizeof (*coro);
695 972
696 if (coro->mainstack) 973 if (coro->mainstack)
697 { 974 {
698 perl_slots tmp_slot;
699 perl_slots *slot;
700
701 if (coro->flags & CF_RUNNING) 975 if (coro->flags & CF_RUNNING)
702 { 976 {
703 slot = &tmp_slot; 977 #define SYM(sym) PL_ ## sym
704 978 CORO_RSS;
705 #define VAR(name,type) slot->name = PL_ ## name;
706 # include "state.h"
707 #undef VAR 979 #undef SYM
708 } 980 }
709 else 981 else
710 slot = coro->slot;
711
712 if (slot)
713 { 982 {
714 rss += sizeof (slot->curstackinfo); 983 #define SYM(sym) coro->slot->sym
715 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 984 CORO_RSS;
716 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 985 #undef SYM
717 rss += slot->tmps_max * sizeof (SV *);
718 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
719 rss += slot->scopestack_max * sizeof (I32);
720 rss += slot->savestack_max * sizeof (ANY);
721
722#if !PERL_VERSION_ATLEAST (5,10,0)
723 rss += slot->retstack_max * sizeof (OP *);
724#endif
725 } 986 }
726 } 987 }
727 988
728 return rss; 989 return rss;
729} 990}
… …
742#endif 1003#endif
743 1004
744/* 1005/*
745 * This overrides the default magic get method of %SIG elements. 1006 * This overrides the default magic get method of %SIG elements.
746 * 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
747 * 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),
748 * readback here. 1009 * we just provide our own readback here.
749 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
750 * not expecting this to actually change the hook. This is a potential problem
751 * when a schedule happens then, but we ignore this.
752 */ 1010 */
753static int 1011static int ecb_cold
754coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1012coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
755{ 1013{
756 const char *s = MgPV_nolen_const (mg); 1014 const char *s = MgPV_nolen_const (mg);
757 1015
758 if (*s == '_') 1016 if (*s == '_')
759 { 1017 {
760 SV **svp = 0; 1018 SV **svp = 0;
761 1019
762 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1020 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
763 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1021 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
764 1022
765 if (svp) 1023 if (svp)
766 { 1024 {
767 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);
768 return 0; 1035 return 0;
769 } 1036 }
770 } 1037 }
771 1038
772 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1039 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
773} 1040}
774 1041
775static int 1042static int ecb_cold
776coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1043coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
777{ 1044{
778 const char *s = MgPV_nolen_const (mg); 1045 const char *s = MgPV_nolen_const (mg);
779 1046
780 if (*s == '_') 1047 if (*s == '_')
… …
794 } 1061 }
795 1062
796 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1063 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
797} 1064}
798 1065
799static int 1066static int ecb_cold
800coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1067coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
801{ 1068{
802 const char *s = MgPV_nolen_const (mg); 1069 const char *s = MgPV_nolen_const (mg);
803 1070
804 if (*s == '_') 1071 if (*s == '_')
… …
809 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1076 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
810 1077
811 if (svp) 1078 if (svp)
812 { 1079 {
813 SV *old = *svp; 1080 SV *old = *svp;
814 *svp = newSVsv (sv); 1081 *svp = SvOK (sv) ? newSVsv (sv) : 0;
815 SvREFCNT_dec (old); 1082 SvREFCNT_dec (old);
816 return 0; 1083 return 0;
817 } 1084 }
818 } 1085 }
819 1086
… …
831slf_check_nop (pTHX_ struct CoroSLF *frame) 1098slf_check_nop (pTHX_ struct CoroSLF *frame)
832{ 1099{
833 return 0; 1100 return 0;
834} 1101}
835 1102
836static UNOP coro_setup_op; 1103static int
1104slf_check_repeat (pTHX_ struct CoroSLF *frame)
1105{
1106 return 1;
1107}
837 1108
838static 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 */
839coro_setup (pTHX_ struct coro *coro) 1112init_perl (pTHX_ struct coro *coro)
840{ 1113{
841 /* 1114 /*
842 * emulate part of the perl startup here. 1115 * emulate part of the perl startup here.
843 */ 1116 */
844 coro_init_stacks (aTHX); 1117 coro_init_stacks (aTHX);
845 1118
846 PL_runops = RUNOPS_DEFAULT; 1119 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 1120 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 1121 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 1122 PL_comppad = 0;
1123 PL_comppad_name = 0;
1124 PL_comppad_name_fill = 0;
1125 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 1126 PL_curpm = 0;
851 PL_curpad = 0; 1127 PL_curpad = 0;
852 PL_localizing = 0; 1128 PL_localizing = 0;
853 PL_dirty = 0;
854 PL_restartop = 0; 1129 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 1130#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 1131 PL_parser = 0;
857#endif 1132#endif
1133 PL_hints = 0;
858 1134
859 /* recreate the die/warn hooks */ 1135 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1136 PL_diehook = SvREFCNT_inc (rv_diehook);
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1137 PL_warnhook = SvREFCNT_inc (rv_warnhook);
862 1138
863 GvSV (PL_defgv) = newSV (0); 1139 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 1140 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 1141 GvSV (PL_errgv) = newSV (0);
866 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;
867 PL_rs = newSVsv (GvSV (irsgv)); 1144 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1145 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 1146
870 { 1147 {
871 dSP; 1148 dSP;
… …
886 /* 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
887 * 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.
888 */ 1165 */
889 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 */
890 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;
891 1169
892 /* 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 */
893 coro_setup_op.op_next = PL_op; 1171 init_perl_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM; 1172 init_perl_op.op_type = OP_ENTERSUB;
895 coro_setup_op.op_ppaddr = pp_slf; 1173 init_perl_op.op_ppaddr = pp_slf;
896 /* no flags etc. required, as an init function won't be called */ 1174 /* no flags etc. required, as an init function won't be called */
897 1175
898 PL_op = (OP *)&coro_setup_op; 1176 PL_op = (OP *)&init_perl_op;
899 1177
900 /* copy throw, in case it was set before coro_setup */ 1178 /* copy throw, in case it was set before init_perl */
901 CORO_THROW = coro->except; 1179 CORO_THROW = coro->except;
902}
903 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
904static void 1190static void
905coro_destruct (pTHX_ struct coro *coro) 1191coro_unwind_stacks (pTHX)
906{ 1192{
907 if (!IN_DESTRUCT) 1193 if (!IN_DESTRUCT)
908 { 1194 {
909 /* restore all saved variables and stuff */ 1195 /* restore all saved variables and stuff */
910 LEAVE_SCOPE (0); 1196 LEAVE_SCOPE (0);
… …
918 POPSTACK_TO (PL_mainstack); 1204 POPSTACK_TO (PL_mainstack);
919 1205
920 /* unwind main stack */ 1206 /* unwind main stack */
921 dounwind (-1); 1207 dounwind (-1);
922 } 1208 }
1209}
923 1210
924 SvREFCNT_dec (GvSV (PL_defgv)); 1211static void
925 SvREFCNT_dec (GvAV (PL_defgv)); 1212destroy_perl (pTHX_ struct coro *coro)
926 SvREFCNT_dec (GvSV (PL_errgv)); 1213{
927 SvREFCNT_dec (PL_defoutgv); 1214 SV *svf [9];
928 SvREFCNT_dec (PL_rs);
929 SvREFCNT_dec (GvSV (irsgv));
930 1215
931 SvREFCNT_dec (PL_diehook);
932 SvREFCNT_dec (PL_warnhook);
933 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
934 SvREFCNT_dec (coro->saved_deffh); 1259 SvREFCNT_dec (coro->saved_deffh);
935 SvREFCNT_dec (coro->rouse_cb); 1260 SvREFCNT_dec (coro->rouse_cb);
936 1261 SvREFCNT_dec (coro->invoke_cb);
937 coro_destruct_stacks (aTHX); 1262 SvREFCNT_dec (coro->invoke_av);
1263 }
938} 1264}
939 1265
940INLINE void 1266ecb_inline void
941free_coro_mortal (pTHX) 1267free_coro_mortal (pTHX)
942{ 1268{
943 if (expect_true (coro_mortal)) 1269 if (ecb_expect_true (coro_mortal))
944 { 1270 {
945 SvREFCNT_dec (coro_mortal); 1271 SvREFCNT_dec ((SV *)coro_mortal);
946 coro_mortal = 0; 1272 coro_mortal = 0;
947 } 1273 }
948} 1274}
949 1275
950static int 1276static int
951runops_trace (pTHX) 1277runops_trace (pTHX)
952{ 1278{
953 COP *oldcop = 0; 1279 COP *oldcop = 0;
954 int oldcxix = -2; 1280 int oldcxix = -2;
955 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
956 coro_cctx *cctx = coro->cctx;
957 1281
958 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1282 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
959 { 1283 {
960 PERL_ASYNC_CHECK (); 1284 PERL_ASYNC_CHECK ();
961 1285
962 if (cctx->flags & CC_TRACE_ALL) 1286 if (cctx_current->flags & CC_TRACE_ALL)
963 { 1287 {
964 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)
965 { 1289 {
966 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1290 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
967 SV **bot, **top; 1291 SV **bot, **top;
968 AV *av = newAV (); /* return values */ 1292 AV *av = newAV (); /* return values */
969 SV **cb; 1293 SV **cb;
… …
1006 1330
1007 if (PL_curcop != &PL_compiling) 1331 if (PL_curcop != &PL_compiling)
1008 { 1332 {
1009 SV **cb; 1333 SV **cb;
1010 1334
1011 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1335 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1012 { 1336 {
1013 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1337 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1014 1338
1015 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1339 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1016 { 1340 {
1017 runops_proc_t old_runops = PL_runops;
1018 dSP; 1341 dSP;
1019 GV *gv = CvGV (cx->blk_sub.cv); 1342 GV *gv = CvGV (cx->blk_sub.cv);
1020 SV *fullname = sv_2mortal (newSV (0)); 1343 SV *fullname = sv_2mortal (newSV (0));
1021 1344
1022 if (isGV (gv)) 1345 if (isGV (gv))
… …
1040 } 1363 }
1041 1364
1042 oldcxix = cxstack_ix; 1365 oldcxix = cxstack_ix;
1043 } 1366 }
1044 1367
1045 if (cctx->flags & CC_TRACE_LINE) 1368 if (cctx_current->flags & CC_TRACE_LINE)
1046 { 1369 {
1047 dSP; 1370 dSP;
1048 1371
1049 PL_runops = RUNOPS_DEFAULT; 1372 PL_runops = RUNOPS_DEFAULT;
1050 ENTER; 1373 ENTER;
… …
1069 1392
1070 TAINT_NOT; 1393 TAINT_NOT;
1071 return 0; 1394 return 0;
1072} 1395}
1073 1396
1074static struct coro_cctx *cctx_ssl_cctx;
1075static struct CoroSLF cctx_ssl_frame; 1397static struct CoroSLF cctx_ssl_frame;
1076 1398
1077static void 1399static void
1078slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1400slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1079{ 1401{
1080 ta->prev = (struct coro *)cctx_ssl_cctx;
1081 ta->next = 0; 1402 ta->prev = 0;
1082} 1403}
1083 1404
1084static int 1405static int
1085slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1406slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1086{ 1407{
… …
1088 1409
1089 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 */
1090} 1411}
1091 1412
1092/* 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 */
1093static void NOINLINE 1414static void ecb_noinline
1094cctx_prepare (pTHX_ coro_cctx *cctx) 1415cctx_prepare (pTHX)
1095{ 1416{
1096 PL_top_env = &PL_start_env; 1417 PL_top_env = &PL_start_env;
1097 1418
1098 if (cctx->flags & CC_TRACE) 1419 if (cctx_current->flags & CC_TRACE)
1099 PL_runops = runops_trace; 1420 PL_runops = runops_trace;
1100 1421
1101 /* 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
1102 * that can lead to creation of a new cctx */ 1423 * that can lead to creation of a new cctx */
1103 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)",
1104 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1425 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1105 1426
1106 /* 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 */
1107 cctx_ssl_cctx = cctx;
1108 cctx_ssl_frame = slf_frame; 1428 cctx_ssl_frame = slf_frame;
1109 1429
1110 slf_frame.prepare = slf_prepare_set_stacklevel; 1430 slf_frame.prepare = slf_prepare_set_stacklevel;
1111 slf_frame.check = slf_check_set_stacklevel; 1431 slf_frame.check = slf_check_set_stacklevel;
1112} 1432}
1113 1433
1114/* 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 */
1115INLINE void 1435ecb_inline void
1116transfer_tail (pTHX) 1436transfer_tail (pTHX)
1117{ 1437{
1118 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);
1119} 1451}
1120 1452
1121/* 1453/*
1122 * this is a _very_ stripped down perl interpreter ;) 1454 * this is a _very_ stripped down perl interpreter ;)
1123 */ 1455 */
… …
1135 /* normally we would need to skip the entersub here */ 1467 /* normally we would need to skip the entersub here */
1136 /* 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 */
1137 /* PL_nop = PL_nop->op_next */ 1469 /* PL_nop = PL_nop->op_next */
1138 1470
1139 /* inject a fake subroutine call to cctx_init */ 1471 /* inject a fake subroutine call to cctx_init */
1140 cctx_prepare (aTHX_ (coro_cctx *)arg); 1472 cctx_prepare (aTHX);
1141 1473
1142 /* cctx_run is the alternative tail of transfer() */ 1474 /* cctx_run is the alternative tail of transfer() */
1143 transfer_tail (aTHX); 1475 transfer_tail (aTHX);
1144 1476
1145 /* 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 */
1146 PL_restartop = PL_op; 1478 PL_restartop = PL_op;
1147 perl_run (PL_curinterp); 1479 perl_run (PL_curinterp);
1148 /* 1480 /*
1149 * Unfortunately, there is no way to get at the return values of the 1481 * Unfortunately, there is no way to get at the return values of the
1150 * coro body here, as perl_run destroys these 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.
1151 */ 1484 */
1152 1485
1153 /* 1486 /*
1154 * 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
1155 * 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)
1156 * 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
1157 * bootstrap-time "top" top_env, as we cannot restore the "main" 1490 * doing in that case. YMMV.
1158 * coroutine as Coro has no such concept
1159 */ 1491 */
1160 PL_top_env = main_top_env; 1492 perlish_exit (aTHX);
1161 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1162 } 1493 }
1163} 1494}
1164 1495
1165static coro_cctx * 1496static coro_cctx *
1166cctx_new () 1497cctx_new (void)
1167{ 1498{
1168 coro_cctx *cctx; 1499 coro_cctx *cctx;
1169 1500
1170 ++cctx_count; 1501 ++cctx_count;
1171 New (0, cctx, 1, coro_cctx); 1502 New (0, cctx, 1, coro_cctx);
… …
1177 return cctx; 1508 return cctx;
1178} 1509}
1179 1510
1180/* create a new cctx only suitable as source */ 1511/* create a new cctx only suitable as source */
1181static coro_cctx * 1512static coro_cctx *
1182cctx_new_empty () 1513cctx_new_empty (void)
1183{ 1514{
1184 coro_cctx *cctx = cctx_new (); 1515 coro_cctx *cctx = cctx_new ();
1185 1516
1186 cctx->sptr = 0; 1517 cctx->stack.sptr = 0;
1187 coro_create (&cctx->cctx, 0, 0, 0, 0); 1518 coro_create (&cctx->cctx, 0, 0, 0, 0);
1188 1519
1189 return cctx; 1520 return cctx;
1190} 1521}
1191 1522
1192/* create a new cctx suitable as destination/running a perl interpreter */ 1523/* create a new cctx suitable as destination/running a perl interpreter */
1193static coro_cctx * 1524static coro_cctx *
1194cctx_new_run () 1525cctx_new_run (void)
1195{ 1526{
1196 coro_cctx *cctx = cctx_new (); 1527 coro_cctx *cctx = cctx_new ();
1197 void *stack_start;
1198 size_t stack_size;
1199 1528
1200#if HAVE_MMAP 1529 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1201 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1202 /* mmap supposedly does allocate-on-write for us */
1203 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1204
1205 if (cctx->sptr != (void *)-1)
1206 {
1207 #if CORO_STACKGUARD
1208 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1209 #endif
1210 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1211 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1212 cctx->flags |= CC_MAPPED;
1213 } 1530 {
1214 else
1215#endif
1216 {
1217 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1218 New (0, cctx->sptr, cctx_stacksize, long);
1219
1220 if (!cctx->sptr)
1221 {
1222 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1531 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1223 _exit (EXIT_FAILURE); 1532 _exit (EXIT_FAILURE);
1224 }
1225
1226 stack_start = cctx->sptr;
1227 stack_size = cctx->ssize;
1228 } 1533 }
1229 1534
1230 #if CORO_USE_VALGRIND
1231 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1232 #endif
1233
1234 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);
1235 1536
1236 return cctx; 1537 return cctx;
1237} 1538}
1238 1539
1239static void 1540static void
1240cctx_destroy (coro_cctx *cctx) 1541cctx_destroy (coro_cctx *cctx)
1241{ 1542{
1242 if (!cctx) 1543 if (!cctx)
1243 return; 1544 return;
1244 1545
1546 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1547
1245 --cctx_count; 1548 --cctx_count;
1246 coro_destroy (&cctx->cctx); 1549 coro_destroy (&cctx->cctx);
1247 1550
1248 /* coro_transfer creates new, empty cctx's */ 1551 coro_stack_free (&cctx->stack);
1249 if (cctx->sptr)
1250 {
1251 #if CORO_USE_VALGRIND
1252 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1253 #endif
1254
1255#if HAVE_MMAP
1256 if (cctx->flags & CC_MAPPED)
1257 munmap (cctx->sptr, cctx->ssize);
1258 else
1259#endif
1260 Safefree (cctx->sptr);
1261 }
1262 1552
1263 Safefree (cctx); 1553 Safefree (cctx);
1264} 1554}
1265 1555
1266/* wether this cctx should be destructed */ 1556/* wether this cctx should be destructed */
1267#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))
1268 1558
1269static coro_cctx * 1559static coro_cctx *
1270cctx_get (pTHX) 1560cctx_get (pTHX)
1271{ 1561{
1272 while (expect_true (cctx_first)) 1562 while (ecb_expect_true (cctx_first))
1273 { 1563 {
1274 coro_cctx *cctx = cctx_first; 1564 coro_cctx *cctx = cctx_first;
1275 cctx_first = cctx->next; 1565 cctx_first = cctx->next;
1276 --cctx_idle; 1566 --cctx_idle;
1277 1567
1278 if (expect_true (!CCTX_EXPIRED (cctx))) 1568 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1279 return cctx; 1569 return cctx;
1280 1570
1281 cctx_destroy (cctx); 1571 cctx_destroy (cctx);
1282 } 1572 }
1283 1573
… …
1285} 1575}
1286 1576
1287static void 1577static void
1288cctx_put (coro_cctx *cctx) 1578cctx_put (coro_cctx *cctx)
1289{ 1579{
1290 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));
1291 1581
1292 /* free another cctx if overlimit */ 1582 /* free another cctx if overlimit */
1293 if (expect_false (cctx_idle >= cctx_max_idle)) 1583 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1294 { 1584 {
1295 coro_cctx *first = cctx_first; 1585 coro_cctx *first = cctx_first;
1296 cctx_first = first->next; 1586 cctx_first = first->next;
1297 --cctx_idle; 1587 --cctx_idle;
1298 1588
… …
1309static void 1599static void
1310transfer_check (pTHX_ struct coro *prev, struct coro *next) 1600transfer_check (pTHX_ struct coro *prev, struct coro *next)
1311{ 1601{
1312 /* TODO: throwing up here is considered harmful */ 1602 /* TODO: throwing up here is considered harmful */
1313 1603
1314 if (expect_true (prev != next)) 1604 if (ecb_expect_true (prev != next))
1315 { 1605 {
1316 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1606 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1317 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,");
1318 1608
1319 if (expect_false (next->flags & CF_RUNNING)) 1609 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1320 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1321
1322 if (expect_false (next->flags & CF_DESTROYED))
1323 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,");
1324 1611
1325#if !PERL_VERSION_ATLEAST (5,10,0) 1612#if !PERL_VERSION_ATLEAST (5,10,0)
1326 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1613 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1327 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,");
1328#endif 1615#endif
1329 } 1616 }
1330} 1617}
1331 1618
1332/* always use the TRANSFER macro */ 1619/* always use the TRANSFER macro */
1333static void NOINLINE /* noinline so we have a fixed stackframe */ 1620static void ecb_noinline /* noinline so we have a fixed stackframe */
1334transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1621transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1335{ 1622{
1336 dSTACKLEVEL; 1623 dSTACKLEVEL;
1337 1624
1338 /* sometimes transfer is only called to set idle_sp */ 1625 /* sometimes transfer is only called to set idle_sp */
1339 if (expect_false (!next)) 1626 if (ecb_expect_false (!prev))
1340 { 1627 {
1341 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1628 cctx_current->idle_sp = STACKLEVEL;
1342 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 */
1343 } 1630 }
1344 else if (expect_true (prev != next)) 1631 else if (ecb_expect_true (prev != next))
1345 { 1632 {
1346 coro_cctx *prev__cctx; 1633 coro_cctx *cctx_prev;
1347 1634
1348 if (expect_false (prev->flags & CF_NEW)) 1635 if (ecb_expect_false (prev->flags & CF_NEW))
1349 { 1636 {
1350 /* create a new empty/source context */ 1637 /* create a new empty/source context */
1351 prev->cctx = cctx_new_empty ();
1352 prev->flags &= ~CF_NEW; 1638 prev->flags &= ~CF_NEW;
1353 prev->flags |= CF_RUNNING; 1639 prev->flags |= CF_RUNNING;
1354 } 1640 }
1355 1641
1356 prev->flags &= ~CF_RUNNING; 1642 prev->flags &= ~CF_RUNNING;
1357 next->flags |= CF_RUNNING; 1643 next->flags |= CF_RUNNING;
1358 1644
1359 /* first get rid of the old state */ 1645 /* first get rid of the old state */
1360 save_perl (aTHX_ prev); 1646 save_perl (aTHX_ prev);
1361 1647
1362 if (expect_false (next->flags & CF_NEW)) 1648 if (ecb_expect_false (next->flags & CF_NEW))
1363 { 1649 {
1364 /* need to start coroutine */ 1650 /* need to start coroutine */
1365 next->flags &= ~CF_NEW; 1651 next->flags &= ~CF_NEW;
1366 /* setup coroutine call */ 1652 /* setup coroutine call */
1367 coro_setup (aTHX_ next); 1653 init_perl (aTHX_ next);
1368 } 1654 }
1369 else 1655 else
1370 load_perl (aTHX_ next); 1656 load_perl (aTHX_ next);
1371 1657
1372 prev__cctx = prev->cctx;
1373
1374 /* possibly untie and reuse the cctx */ 1658 /* possibly untie and reuse the cctx */
1375 if (expect_true ( 1659 if (ecb_expect_true (
1376 prev__cctx->idle_sp == STACKLEVEL 1660 cctx_current->idle_sp == STACKLEVEL
1377 && !(prev__cctx->flags & CC_TRACE) 1661 && !(cctx_current->flags & CC_TRACE)
1378 && !force_cctx 1662 && !force_cctx
1379 )) 1663 ))
1380 { 1664 {
1381 /* 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 */
1382 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));
1383 1667
1384 prev->cctx = 0;
1385
1386 /* 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. */
1387 /* 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 */
1388 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1670 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1389 if (!next->cctx) 1671 if (ecb_expect_true (!next->cctx))
1390 next->cctx = cctx_get (aTHX); 1672 next->cctx = cctx_get (aTHX);
1391 1673
1392 cctx_put (prev__cctx); 1674 cctx_put (cctx_current);
1393 } 1675 }
1676 else
1677 prev->cctx = cctx_current;
1394 1678
1395 ++next->usecount; 1679 ++next->usecount;
1396 1680
1397 if (expect_true (!next->cctx)) 1681 cctx_prev = cctx_current;
1398 next->cctx = cctx_get (aTHX); 1682 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1399 1683
1400 if (expect_false (prev__cctx != next->cctx)) 1684 next->cctx = 0;
1685
1686 if (ecb_expect_false (cctx_prev != cctx_current))
1401 { 1687 {
1402 prev__cctx->top_env = PL_top_env; 1688 cctx_prev->top_env = PL_top_env;
1403 PL_top_env = next->cctx->top_env; 1689 PL_top_env = cctx_current->top_env;
1404 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1690 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1405 } 1691 }
1406 1692
1407 transfer_tail (aTHX); 1693 transfer_tail (aTHX);
1408 } 1694 }
1409} 1695}
… …
1411#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))
1412#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1698#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1413 1699
1414/** high level stuff ********************************************************/ 1700/** high level stuff ********************************************************/
1415 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 */
1416static int 1704static void
1705coro_call_on_destroy (pTHX_ struct coro *coro);
1706
1707static void
1417coro_state_destroy (pTHX_ struct coro *coro) 1708coro_state_destroy (pTHX_ struct coro *coro)
1418{ 1709{
1419 if (coro->flags & CF_DESTROYED) 1710 if (coro->flags & CF_ZOMBIE)
1420 return 0; 1711 return;
1421 1712
1422 if (coro->on_destroy)
1423 coro->on_destroy (aTHX_ coro); 1713 slf_destroy (aTHX_ coro);
1424 1714
1425 coro->flags |= CF_DESTROYED; 1715 coro->flags |= CF_ZOMBIE;
1426 1716
1427 if (coro->flags & CF_READY) 1717 if (coro->flags & CF_READY)
1428 { 1718 {
1429 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1719 /* reduce nready, as destroying a ready coro effectively unreadies it */
1430 /* alternative: look through all ready queues and remove the coro */ 1720 /* alternative: look through all ready queues and remove the coro */
1431 --coro_nready; 1721 --coro_nready;
1432 } 1722 }
1433 else 1723 else
1434 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 */
1435 1725
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1726 if (coro->next) coro->next->prev = coro->prev;
1437 { 1727 if (coro->prev) coro->prev->next = coro->next;
1438 struct coro temp; 1728 if (coro == coro_first) coro_first = coro->next;
1439 1729
1440 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1730 if (coro->mainstack
1441 1731 && coro->mainstack != main_mainstack
1442 save_perl (aTHX_ &temp); 1732 && coro->slot
1733 && !PL_dirty)
1443 load_perl (aTHX_ coro); 1734 destroy_perl (aTHX_ coro);
1444
1445 coro_destruct (aTHX_ coro);
1446
1447 load_perl (aTHX_ &temp);
1448
1449 coro->slot = 0;
1450 }
1451 1735
1452 cctx_destroy (coro->cctx); 1736 cctx_destroy (coro->cctx);
1453 SvREFCNT_dec (coro->startcv); 1737 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1738 SvREFCNT_dec (coro->args);
1739 SvREFCNT_dec (coro->swap_sv);
1455 SvREFCNT_dec (CORO_THROW); 1740 SvREFCNT_dec (CORO_THROW);
1456 1741
1457 if (coro->next) coro->next->prev = coro->prev; 1742 coro_call_on_destroy (aTHX_ coro);
1458 if (coro->prev) coro->prev->next = coro->next;
1459 if (coro == coro_first) coro_first = coro->next;
1460 1743
1461 return 1; 1744 /* more destruction mayhem in coro_state_free */
1462} 1745}
1463 1746
1464static int 1747static int
1465coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1748coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1466{ 1749{
1467 struct coro *coro = (struct coro *)mg->mg_ptr; 1750 struct coro *coro = (struct coro *)mg->mg_ptr;
1468 mg->mg_ptr = 0; 1751 mg->mg_ptr = 0;
1469 1752
1470 coro->hv = 0;
1471
1472 if (--coro->refcnt < 0)
1473 {
1474 coro_state_destroy (aTHX_ coro); 1753 coro_state_destroy (aTHX_ coro);
1754 SvREFCNT_dec (coro->on_destroy);
1755 SvREFCNT_dec (coro->status);
1756
1475 Safefree (coro); 1757 Safefree (coro);
1476 }
1477 1758
1478 return 0; 1759 return 0;
1479} 1760}
1480 1761
1481static int 1762static int ecb_cold
1482coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1763coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1483{ 1764{
1484 struct coro *coro = (struct coro *)mg->mg_ptr; 1765 /* called when perl clones the current process the slow way (windows process emulation) */
1485 1766 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1486 ++coro->refcnt; 1767 mg->mg_ptr = 0;
1768 mg->mg_virtual = 0;
1487 1769
1488 return 0; 1770 return 0;
1489} 1771}
1490 1772
1491static MGVTBL coro_state_vtbl = { 1773static MGVTBL coro_state_vtbl = {
… …
1514 1796
1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1797 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1516 TRANSFER (ta, 1); 1798 TRANSFER (ta, 1);
1517} 1799}
1518 1800
1519/*****************************************************************************/
1520/* gensub: simple closure generation utility */
1521
1522#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1523
1524/* create a closure from XS, returns a code reference */
1525/* the arg can be accessed via GENSUB_ARG from the callback */
1526/* the callback must use dXSARGS/XSRETURN */
1527static SV *
1528gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1529{
1530 CV *cv = (CV *)newSV (0);
1531
1532 sv_upgrade ((SV *)cv, SVt_PVCV);
1533
1534 CvANON_on (cv);
1535 CvISXSUB_on (cv);
1536 CvXSUB (cv) = xsub;
1537 GENSUB_ARG = arg;
1538
1539 return newRV_noinc ((SV *)cv);
1540}
1541
1542/** Coro ********************************************************************/ 1801/** Coro ********************************************************************/
1543 1802
1544INLINE void 1803ecb_inline void
1545coro_enq (pTHX_ struct coro *coro) 1804coro_enq (pTHX_ struct coro *coro)
1546{ 1805{
1547 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1806 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1548}
1549 1807
1550INLINE 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 *
1551coro_deq (pTHX) 1816coro_deq (pTHX)
1552{ 1817{
1553 int prio; 1818 int prio;
1554 1819
1555 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1820 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1556 if (AvFILLp (coro_ready [prio]) >= 0) 1821 {
1557 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 }
1558 1831
1559 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;
1560} 1850}
1561 1851
1562static int 1852static int
1563api_ready (pTHX_ SV *coro_sv) 1853api_ready (pTHX_ SV *coro_sv)
1564{ 1854{
1565 struct coro *coro;
1566 SV *sv_hook;
1567 void (*xs_hook)(void);
1568
1569 if (SvROK (coro_sv))
1570 coro_sv = SvRV (coro_sv);
1571
1572 coro = SvSTATE (coro_sv); 1855 struct coro *coro = SvSTATE (coro_sv);
1573 1856
1574 if (coro->flags & CF_READY) 1857 if (coro->flags & CF_READY)
1575 return 0; 1858 return 0;
1576 1859
1577 coro->flags |= CF_READY; 1860 coro->flags |= CF_READY;
1578 1861
1579 sv_hook = coro_nready ? 0 : coro_readyhook;
1580 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1581
1582 coro_enq (aTHX_ coro); 1862 coro_enq (aTHX_ coro);
1583 ++coro_nready;
1584 1863
1585 if (sv_hook) 1864 if (!coro_nready++)
1586 { 1865 if (coroapi.readyhook)
1587 dSP; 1866 coroapi.readyhook ();
1588
1589 ENTER;
1590 SAVETMPS;
1591
1592 PUSHMARK (SP);
1593 PUTBACK;
1594 call_sv (sv_hook, G_VOID | G_DISCARD);
1595
1596 FREETMPS;
1597 LEAVE;
1598 }
1599
1600 if (xs_hook)
1601 xs_hook ();
1602 1867
1603 return 1; 1868 return 1;
1604} 1869}
1605 1870
1606static int 1871static int
1607api_is_ready (pTHX_ SV *coro_sv) 1872api_is_ready (pTHX_ SV *coro_sv)
1608{ 1873{
1609 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1874 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1610} 1875}
1611 1876
1612INLINE void 1877/* expects to own a reference to next->hv */
1878ecb_inline void
1613prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1879prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1614{ 1880{
1615 SV *prev_sv, *next_sv;
1616
1617 for (;;)
1618 {
1619 next_sv = coro_deq (aTHX);
1620
1621 /* nothing to schedule: call the idle handler */
1622 if (expect_false (!next_sv))
1623 {
1624 dSP;
1625
1626 ENTER;
1627 SAVETMPS;
1628
1629 PUSHMARK (SP);
1630 PUTBACK;
1631 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1632
1633 FREETMPS;
1634 LEAVE;
1635 continue;
1636 }
1637
1638 ta->next = SvSTATE_hv (next_sv);
1639
1640 /* cannot transfer to destroyed coros, skip and look for next */
1641 if (expect_false (ta->next->flags & CF_DESTROYED))
1642 {
1643 SvREFCNT_dec (next_sv);
1644 /* coro_nready has already been taken care of by destroy */
1645 continue;
1646 }
1647
1648 --coro_nready;
1649 break;
1650 }
1651
1652 /* free this only after the transfer */
1653 prev_sv = SvRV (coro_current); 1881 SV *prev_sv = SvRV (coro_current);
1882
1654 ta->prev = SvSTATE_hv (prev_sv); 1883 ta->prev = SvSTATE_hv (prev_sv);
1884 ta->next = next;
1885
1655 TRANSFER_CHECK (*ta); 1886 TRANSFER_CHECK (*ta);
1656 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1887
1657 ta->next->flags &= ~CF_READY;
1658 SvRV_set (coro_current, next_sv); 1888 SvRV_set (coro_current, (SV *)next->hv);
1659 1889
1660 free_coro_mortal (aTHX); 1890 free_coro_mortal (aTHX);
1661 coro_mortal = prev_sv; 1891 coro_mortal = prev_sv;
1662} 1892}
1663 1893
1664INLINE 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
1665prepare_cede (pTHX_ struct coro_transfer_args *ta) 1965prepare_cede (pTHX_ struct coro_transfer_args *ta)
1666{ 1966{
1667 api_ready (aTHX_ coro_current); 1967 api_ready (aTHX_ coro_current);
1668 prepare_schedule (aTHX_ ta); 1968 prepare_schedule (aTHX_ ta);
1669} 1969}
1670 1970
1671INLINE void 1971ecb_inline void
1672prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1972prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1673{ 1973{
1674 SV *prev = SvRV (coro_current); 1974 SV *prev = SvRV (coro_current);
1675 1975
1676 if (coro_nready) 1976 if (coro_nready)
… …
1689 1989
1690 prepare_schedule (aTHX_ &ta); 1990 prepare_schedule (aTHX_ &ta);
1691 TRANSFER (ta, 1); 1991 TRANSFER (ta, 1);
1692} 1992}
1693 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
1694static int 2004static int
1695api_cede (pTHX) 2005api_cede (pTHX)
1696{ 2006{
1697 struct coro_transfer_args ta; 2007 struct coro_transfer_args ta;
1698 2008
1699 prepare_cede (aTHX_ &ta); 2009 prepare_cede (aTHX_ &ta);
1700 2010
1701 if (expect_true (ta.prev != ta.next)) 2011 if (ecb_expect_true (ta.prev != ta.next))
1702 { 2012 {
1703 TRANSFER (ta, 1); 2013 TRANSFER (ta, 1);
1704 return 1; 2014 return 1;
1705 } 2015 }
1706 else 2016 else
… …
1725static void 2035static void
1726api_trace (pTHX_ SV *coro_sv, int flags) 2036api_trace (pTHX_ SV *coro_sv, int flags)
1727{ 2037{
1728 struct coro *coro = SvSTATE (coro_sv); 2038 struct coro *coro = SvSTATE (coro_sv);
1729 2039
2040 if (coro->flags & CF_RUNNING)
2041 croak ("cannot enable tracing on a running coroutine, caught");
2042
1730 if (flags & CC_TRACE) 2043 if (flags & CC_TRACE)
1731 { 2044 {
1732 if (!coro->cctx) 2045 if (!coro->cctx)
1733 coro->cctx = cctx_new_run (); 2046 coro->cctx = cctx_new_run ();
1734 else if (!(coro->cctx->flags & CC_TRACE)) 2047 else if (!(coro->cctx->flags & CC_TRACE))
1735 croak ("cannot enable tracing on coroutine with custom stack,"); 2048 croak ("cannot enable tracing on coroutine with custom stack, caught");
1736 2049
1737 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2050 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1738 } 2051 }
1739 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2052 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1740 { 2053 {
… …
1745 else 2058 else
1746 coro->slot->runops = RUNOPS_DEFAULT; 2059 coro->slot->runops = RUNOPS_DEFAULT;
1747 } 2060 }
1748} 2061}
1749 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
1750/*****************************************************************************/ 2391/*****************************************************************************/
1751/* rouse callback */ 2392/* rouse callback */
1752 2393
1753#define CORO_MAGIC_type_rouse PERL_MAGIC_ext 2394#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1754 2395
1755static void 2396static void
1756coro_rouse_callback (pTHX_ CV *cv) 2397coro_rouse_callback (pTHX_ CV *cv)
1757{ 2398{
1758 dXSARGS; 2399 dXSARGS;
1759 SV *data = (SV *)GENSUB_ARG; 2400 SV *data = (SV *)S_GENSUB_ARG;
1760 2401
1761 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2402 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1762 { 2403 {
1763 /* first call, set args */ 2404 /* first call, set args */
1764 int i; 2405 SV *coro = SvRV (data);
1765 AV *av = newAV (); 2406 AV *av = newAV ();
1766 SV *coro = SvRV (data);
1767 2407
1768 SvRV_set (data, (SV *)av); 2408 SvRV_set (data, (SV *)av);
1769 api_ready (aTHX_ coro);
1770 SvREFCNT_dec (coro);
1771 2409
1772 /* better take a full copy of the arguments */ 2410 /* better take a full copy of the arguments */
1773 while (items--) 2411 while (items--)
1774 av_store (av, items, newSVsv (ST (items))); 2412 av_store (av, items, newSVsv (ST (items)));
2413
2414 api_ready (aTHX_ coro);
2415 SvREFCNT_dec (coro);
1775 } 2416 }
1776 2417
1777 XSRETURN_EMPTY; 2418 XSRETURN_EMPTY;
1778} 2419}
1779 2420
1780static int 2421static int
1781slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2422slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1782{ 2423{
1783 SV *data = (SV *)frame->data; 2424 SV *data = (SV *)frame->data;
1784 2425
1785 if (CORO_THROW) 2426 if (CORO_THROW)
1786 return 0; 2427 return 0;
1787 2428
1788 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2429 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1789 return 1; 2430 return 1;
… …
1796 2437
1797 EXTEND (SP, AvFILLp (av) + 1); 2438 EXTEND (SP, AvFILLp (av) + 1);
1798 for (i = 0; i <= AvFILLp (av); ++i) 2439 for (i = 0; i <= AvFILLp (av); ++i)
1799 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2440 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1800 2441
1801 /* we have stolen the elements, so ste length to zero and free */ 2442 /* we have stolen the elements, so set length to zero and free */
1802 AvFILLp (av) = -1; 2443 AvFILLp (av) = -1;
1803 av_undef (av); 2444 av_undef (av);
1804 2445
1805 PUTBACK; 2446 PUTBACK;
1806 } 2447 }
… …
1825 cb = sv_2mortal (coro->rouse_cb); 2466 cb = sv_2mortal (coro->rouse_cb);
1826 coro->rouse_cb = 0; 2467 coro->rouse_cb = 0;
1827 } 2468 }
1828 2469
1829 if (!SvROK (cb) 2470 if (!SvROK (cb)
1830 || SvTYPE (SvRV (cb)) != SVt_PVCV 2471 || SvTYPE (SvRV (cb)) != SVt_PVCV
1831 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2472 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1832 croak ("Coro::rouse_wait called with illegal callback argument,"); 2473 croak ("Coro::rouse_wait called with illegal callback argument,");
1833 2474
1834 { 2475 {
1835 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2476 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1836 SV *data = (SV *)GENSUB_ARG; 2477 SV *data = (SV *)S_GENSUB_ARG;
1837 2478
1838 frame->data = (void *)data; 2479 frame->data = (void *)data;
1839 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2480 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1840 frame->check = slf_check_rouse_wait; 2481 frame->check = slf_check_rouse_wait;
1841 } 2482 }
… …
1845coro_new_rouse_cb (pTHX) 2486coro_new_rouse_cb (pTHX)
1846{ 2487{
1847 HV *hv = (HV *)SvRV (coro_current); 2488 HV *hv = (HV *)SvRV (coro_current);
1848 struct coro *coro = SvSTATE_hv (hv); 2489 struct coro *coro = SvSTATE_hv (hv);
1849 SV *data = newRV_inc ((SV *)hv); 2490 SV *data = newRV_inc ((SV *)hv);
1850 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2491 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
1851 2492
1852 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2493 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1853 SvREFCNT_dec (data); /* magicext increases the refcount */ 2494 SvREFCNT_dec (data); /* magicext increases the refcount */
1854 2495
1855 SvREFCNT_dec (coro->rouse_cb); 2496 SvREFCNT_dec (coro->rouse_cb);
… …
1913 frame->prepare = prepare_schedule; 2554 frame->prepare = prepare_schedule;
1914 frame->check = slf_check_nop; 2555 frame->check = slf_check_nop;
1915} 2556}
1916 2557
1917static 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
1918slf_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)
1919{ 2588{
1920 frame->prepare = prepare_cede; 2589 frame->prepare = prepare_cede;
1921 frame->check = slf_check_nop; 2590 frame->check = slf_check_nop;
1922} 2591}
… …
1924static void 2593static void
1925slf_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)
1926{ 2595{
1927 frame->prepare = prepare_cede_notself; 2596 frame->prepare = prepare_cede_notself;
1928 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
2614 /* this callback is reserved for slf functions needing to do cleanup */
2615 if (frame.destroy && frame.prepare && !PL_dirty)
2616 frame.destroy (aTHX_ &frame);
1929} 2617}
1930 2618
1931/* 2619/*
1932 * these not obviously related functions are all rolled into one 2620 * these not obviously related functions are all rolled into one
1933 * function to increase chances that they all will call transfer with the same 2621 * function to increase chances that they all will call transfer with the same
… …
1940 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2628 I32 checkmark; /* mark SP to see how many elements check has pushed */
1941 2629
1942 /* set up the slf frame, unless it has already been set-up */ 2630 /* set up the slf frame, unless it has already been set-up */
1943 /* the latter happens when a new coro has been started */ 2631 /* the latter happens when a new coro has been started */
1944 /* or when a new cctx was attached to an existing coroutine */ 2632 /* or when a new cctx was attached to an existing coroutine */
1945 if (expect_true (!slf_frame.prepare)) 2633 if (ecb_expect_true (!slf_frame.prepare))
1946 { 2634 {
1947 /* first iteration */ 2635 /* first iteration */
1948 dSP; 2636 dSP;
1949 SV **arg = PL_stack_base + TOPMARK + 1; 2637 SV **arg = PL_stack_base + TOPMARK + 1;
1950 int items = SP - arg; /* args without function object */ 2638 int items = SP - arg; /* args without function object */
… …
1991 while (slf_frame.check (aTHX_ &slf_frame)); 2679 while (slf_frame.check (aTHX_ &slf_frame));
1992 2680
1993 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2681 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1994 2682
1995 /* exception handling */ 2683 /* exception handling */
1996 if (expect_false (CORO_THROW)) 2684 if (ecb_expect_false (CORO_THROW))
1997 { 2685 {
1998 SV *exception = sv_2mortal (CORO_THROW); 2686 SV *exception = sv_2mortal (CORO_THROW);
1999 2687
2000 CORO_THROW = 0; 2688 CORO_THROW = 0;
2001 sv_setsv (ERRSV, exception); 2689 sv_setsv (ERRSV, exception);
2002 croak (0); 2690 croak (0);
2003 } 2691 }
2004 2692
2005 /* return value handling - mostly like entersub */ 2693 /* return value handling - mostly like entersub */
2006 /* make sure we put something on the stack in scalar context */ 2694 /* make sure we put something on the stack in scalar context */
2007 if (GIMME_V == G_SCALAR) 2695 if (GIMME_V == G_SCALAR
2696 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2008 { 2697 {
2009 dSP; 2698 dSP;
2010 SV **bot = PL_stack_base + checkmark; 2699 SV **bot = PL_stack_base + checkmark;
2011 2700
2012 if (sp == bot) /* too few, push undef */ 2701 if (sp == bot) /* too few, push undef */
2013 bot [1] = &PL_sv_undef; 2702 bot [1] = &PL_sv_undef;
2014 else if (sp != bot + 1) /* too many, take last one */ 2703 else /* too many, take last one */
2015 bot [1] = *sp; 2704 bot [1] = *sp;
2016 2705
2017 SP = bot + 1; 2706 SP = bot + 1;
2018 2707
2019 PUTBACK; 2708 PUTBACK;
… …
2052 if (PL_op->op_flags & OPf_STACKED) 2741 if (PL_op->op_flags & OPf_STACKED)
2053 { 2742 {
2054 if (items > slf_arga) 2743 if (items > slf_arga)
2055 { 2744 {
2056 slf_arga = items; 2745 slf_arga = items;
2057 free (slf_argv); 2746 Safefree (slf_argv);
2058 slf_argv = malloc (slf_arga * sizeof (SV *)); 2747 New (0, slf_argv, slf_arga, SV *);
2059 } 2748 }
2060 2749
2061 slf_argc = items; 2750 slf_argc = items;
2062 2751
2063 for (i = 0; i < items; ++i) 2752 for (i = 0; i < items; ++i)
… …
2065 } 2754 }
2066 else 2755 else
2067 slf_argc = 0; 2756 slf_argc = 0;
2068 2757
2069 PL_op->op_ppaddr = pp_slf; 2758 PL_op->op_ppaddr = pp_slf;
2070 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2759 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2071 2760
2072 PL_op = (OP *)&slf_restore; 2761 PL_op = (OP *)&slf_restore;
2762}
2763
2764/*****************************************************************************/
2765/* dynamic wind */
2766
2767static void
2768on_enterleave_call (pTHX_ SV *cb)
2769{
2770 dSP;
2771
2772 PUSHSTACK;
2773
2774 PUSHMARK (SP);
2775 PUTBACK;
2776 call_sv (cb, G_VOID | G_DISCARD);
2777 SPAGAIN;
2778
2779 POPSTACK;
2780}
2781
2782static SV *
2783coro_avp_pop_and_free (pTHX_ AV **avp)
2784{
2785 AV *av = *avp;
2786 SV *res = av_pop (av);
2787
2788 if (AvFILLp (av) < 0)
2789 {
2790 *avp = 0;
2791 SvREFCNT_dec (av);
2792 }
2793
2794 return res;
2795}
2796
2797static void
2798coro_pop_on_enter (pTHX_ void *coro)
2799{
2800 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2801 SvREFCNT_dec (cb);
2802}
2803
2804static void
2805coro_pop_on_leave (pTHX_ void *coro)
2806{
2807 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2808 on_enterleave_call (aTHX_ sv_2mortal (cb));
2073} 2809}
2074 2810
2075/*****************************************************************************/ 2811/*****************************************************************************/
2076/* PerlIO::cede */ 2812/* PerlIO::cede */
2077 2813
… …
2079{ 2815{
2080 PerlIOBuf base; 2816 PerlIOBuf base;
2081 NV next, every; 2817 NV next, every;
2082} PerlIOCede; 2818} PerlIOCede;
2083 2819
2084static IV 2820static IV ecb_cold
2085PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2821PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2086{ 2822{
2087 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2823 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2088 2824
2089 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2825 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2090 self->next = nvtime () + self->every; 2826 self->next = nvtime () + self->every;
2091 2827
2092 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2828 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2093} 2829}
2094 2830
2095static SV * 2831static SV * ecb_cold
2096PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2832PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2097{ 2833{
2098 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2834 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2099 2835
2100 return newSVnv (self->every); 2836 return newSVnv (self->every);
… …
2151/* Coro::Semaphore & Coro::Signal */ 2887/* Coro::Semaphore & Coro::Signal */
2152 2888
2153static SV * 2889static SV *
2154coro_waitarray_new (pTHX_ int count) 2890coro_waitarray_new (pTHX_ int count)
2155{ 2891{
2156 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2892 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2157 AV *av = newAV (); 2893 AV *av = newAV ();
2158 SV **ary; 2894 SV **ary;
2159 2895
2160 /* unfortunately, building manually saves memory */ 2896 /* unfortunately, building manually saves memory */
2161 Newx (ary, 2, SV *); 2897 Newx (ary, 2, SV *);
2162 AvALLOC (av) = ary; 2898 AvALLOC (av) = ary;
2899#if PERL_VERSION_ATLEAST (5,10,0)
2163 /*AvARRAY (av) = ary;*/ 2900 AvARRAY (av) = ary;
2901#else
2164 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ 2902 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2903 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2904 SvPVX ((SV *)av) = (char *)ary;
2905#endif
2165 AvMAX (av) = 1; 2906 AvMAX (av) = 1;
2166 AvFILLp (av) = 0; 2907 AvFILLp (av) = 0;
2167 ary [0] = newSViv (count); 2908 ary [0] = newSViv (count);
2168 2909
2169 return newRV_noinc ((SV *)av); 2910 return newRV_noinc ((SV *)av);
… …
2207 SvREFCNT_dec (cb); 2948 SvREFCNT_dec (cb);
2208 } 2949 }
2209} 2950}
2210 2951
2211static void 2952static void
2212coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2953coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2213{ 2954{
2214 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2955 /* call $sem->adjust (0) to possibly wake up some other waiters */
2215 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2956 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2216} 2957}
2217 2958
2218static int 2959static int
2219slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2960slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2220{ 2961{
2221 AV *av = (AV *)frame->data; 2962 AV *av = (AV *)frame->data;
2222 SV *count_sv = AvARRAY (av)[0]; 2963 SV *count_sv = AvARRAY (av)[0];
2964 SV *coro_hv = SvRV (coro_current);
2965
2966 frame->destroy = 0;
2223 2967
2224 /* if we are about to throw, don't actually acquire the lock, just throw */ 2968 /* if we are about to throw, don't actually acquire the lock, just throw */
2225 if (CORO_THROW) 2969 if (ecb_expect_false (CORO_THROW))
2970 {
2971 /* we still might be responsible for the semaphore, so wake up others */
2972 coro_semaphore_adjust (aTHX_ av, 0);
2973
2226 return 0; 2974 return 0;
2975 }
2227 else if (SvIVX (count_sv) > 0) 2976 else if (SvIVX (count_sv) > 0)
2228 { 2977 {
2229 SvSTATE_current->on_destroy = 0;
2230
2231 if (acquire) 2978 if (acquire)
2232 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2979 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2233 else 2980 else
2234 coro_semaphore_adjust (aTHX_ av, 0); 2981 coro_semaphore_adjust (aTHX_ av, 0);
2235 2982
… …
2239 { 2986 {
2240 int i; 2987 int i;
2241 /* if we were woken up but can't down, we look through the whole */ 2988 /* if we were woken up but can't down, we look through the whole */
2242 /* waiters list and only add us if we aren't in there already */ 2989 /* waiters list and only add us if we aren't in there already */
2243 /* this avoids some degenerate memory usage cases */ 2990 /* this avoids some degenerate memory usage cases */
2244 2991 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2245 for (i = 1; i <= AvFILLp (av); ++i)
2246 if (AvARRAY (av)[i] == SvRV (coro_current)) 2992 if (AvARRAY (av)[i] == coro_hv)
2247 return 1; 2993 return 1;
2248 2994
2249 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2995 av_push (av, SvREFCNT_inc (coro_hv));
2250 return 1; 2996 return 1;
2251 } 2997 }
2252} 2998}
2253 2999
2254static int 3000static int
… …
2277 { 3023 {
2278 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3024 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2279 3025
2280 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3026 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2281 frame->prepare = prepare_schedule; 3027 frame->prepare = prepare_schedule;
2282
2283 /* to avoid race conditions when a woken-up coro gets terminated */ 3028 /* to avoid race conditions when a woken-up coro gets terminated */
2284 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3029 /* we arrange for a temporary on_destroy that calls adjust (0) */
2285 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3030 frame->destroy = coro_semaphore_destroy;
2286 } 3031 }
2287} 3032}
2288 3033
2289static void 3034static void
2290slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3035slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2298{ 3043{
2299 if (items >= 2) 3044 if (items >= 2)
2300 { 3045 {
2301 /* callback form */ 3046 /* callback form */
2302 AV *av = (AV *)SvRV (arg [0]); 3047 AV *av = (AV *)SvRV (arg [0]);
2303 CV *cb_cv = coro_sv_2cv (arg [1]); 3048 SV *cb_cv = s_get_cv_croak (arg [1]);
2304 3049
2305 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); 3050 av_push (av, SvREFCNT_inc_NN (cb_cv));
2306 3051
2307 if (SvIVX (AvARRAY (av)[0]) > 0) 3052 if (SvIVX (AvARRAY (av)[0]) > 0)
2308 coro_semaphore_adjust (aTHX_ av, 0); 3053 coro_semaphore_adjust (aTHX_ av, 0);
2309 3054
2310 frame->prepare = prepare_nop; 3055 frame->prepare = prepare_nop;
… …
2334 AvARRAY (av)[0] = AvARRAY (av)[1]; 3079 AvARRAY (av)[0] = AvARRAY (av)[1];
2335 AvARRAY (av)[1] = cb; 3080 AvARRAY (av)[1] = cb;
2336 3081
2337 cb = av_shift (av); 3082 cb = av_shift (av);
2338 3083
3084 if (SvTYPE (cb) == SVt_PVCV)
3085 {
3086 dSP;
3087 PUSHMARK (SP);
3088 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3089 PUTBACK;
3090 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3091 }
3092 else
3093 {
2339 api_ready (aTHX_ cb); 3094 api_ready (aTHX_ cb);
2340 sv_setiv (cb, 0); /* signal waiter */ 3095 sv_setiv (cb, 0); /* signal waiter */
3096 }
3097
2341 SvREFCNT_dec (cb); 3098 SvREFCNT_dec (cb);
2342 3099
2343 --count; 3100 --count;
2344 } 3101 }
2345} 3102}
… …
2354static void 3111static void
2355slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3112slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2356{ 3113{
2357 AV *av = (AV *)SvRV (arg [0]); 3114 AV *av = (AV *)SvRV (arg [0]);
2358 3115
3116 if (items >= 2)
3117 {
3118 SV *cb_cv = s_get_cv_croak (arg [1]);
3119 av_push (av, SvREFCNT_inc_NN (cb_cv));
3120
2359 if (SvIVX (AvARRAY (av)[0])) 3121 if (SvIVX (AvARRAY (av)[0]))
3122 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3123
3124 frame->prepare = prepare_nop;
3125 frame->check = slf_check_nop;
3126 }
3127 else if (SvIVX (AvARRAY (av)[0]))
2360 { 3128 {
2361 SvIVX (AvARRAY (av)[0]) = 0; 3129 SvIVX (AvARRAY (av)[0]) = 0;
2362 frame->prepare = prepare_nop; 3130 frame->prepare = prepare_nop;
2363 frame->check = slf_check_nop; 3131 frame->check = slf_check_nop;
2364 } 3132 }
2365 else 3133 else
2366 { 3134 {
2367 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3135 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2368 3136
2369 av_push (av, waiter); 3137 av_push (av, waiter);
2370 3138
2371 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3139 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2372 frame->prepare = prepare_schedule; 3140 frame->prepare = prepare_schedule;
… …
2390 3158
2391static void 3159static void
2392coro_aio_callback (pTHX_ CV *cv) 3160coro_aio_callback (pTHX_ CV *cv)
2393{ 3161{
2394 dXSARGS; 3162 dXSARGS;
2395 AV *state = (AV *)GENSUB_ARG; 3163 AV *state = (AV *)S_GENSUB_ARG;
2396 SV *coro = av_pop (state); 3164 SV *coro = av_pop (state);
2397 SV *data_sv = newSV (sizeof (struct io_state)); 3165 SV *data_sv = newSV (sizeof (struct io_state));
2398 3166
2399 av_extend (state, items); 3167 av_extend (state, items - 1);
2400 3168
2401 sv_upgrade (data_sv, SVt_PV); 3169 sv_upgrade (data_sv, SVt_PV);
2402 SvCUR_set (data_sv, sizeof (struct io_state)); 3170 SvCUR_set (data_sv, sizeof (struct io_state));
2403 SvPOK_only (data_sv); 3171 SvPOK_only (data_sv);
2404 3172
… …
2436 /* it quickly returns */ 3204 /* it quickly returns */
2437 if (CORO_THROW) 3205 if (CORO_THROW)
2438 return 0; 3206 return 0;
2439 3207
2440 /* one element that is an RV? repeat! */ 3208 /* one element that is an RV? repeat! */
2441 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3209 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2442 return 1; 3210 return 1;
2443 3211
2444 /* restore status */ 3212 /* restore status */
2445 { 3213 {
2446 SV *data_sv = av_pop (state); 3214 SV *data_sv = av_pop (state);
… …
2485 dSP; 3253 dSP;
2486 3254
2487 static SV *prio_cv; 3255 static SV *prio_cv;
2488 static SV *prio_sv; 3256 static SV *prio_sv;
2489 3257
2490 if (expect_false (!prio_cv)) 3258 if (ecb_expect_false (!prio_cv))
2491 { 3259 {
2492 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3260 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2493 prio_sv = newSViv (0); 3261 prio_sv = newSViv (0);
2494 } 3262 }
2495 3263
… …
2514 3282
2515 for (i = 0; i < items; ++i) 3283 for (i = 0; i < items; ++i)
2516 PUSHs (arg [i]); 3284 PUSHs (arg [i]);
2517 3285
2518 /* now push the callback closure */ 3286 /* now push the callback closure */
2519 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3287 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2520 3288
2521 /* now call the AIO function - we assume our request is uncancelable */ 3289 /* now call the AIO function - we assume our request is uncancelable */
2522 PUTBACK; 3290 PUTBACK;
2523 call_sv ((SV *)req, G_VOID | G_DISCARD); 3291 call_sv ((SV *)req, G_VOID | G_DISCARD);
2524 } 3292 }
2525 3293
2526 /* now that the requets is going, we loop toll we have a result */ 3294 /* now that the request is going, we loop till we have a result */
2527 frame->data = (void *)state; 3295 frame->data = (void *)state;
2528 frame->prepare = prepare_schedule; 3296 frame->prepare = prepare_schedule;
2529 frame->check = slf_check_aio_req; 3297 frame->check = slf_check_aio_req;
2530} 3298}
2531 3299
… …
2538 3306
2539 XSRETURN_EMPTY; 3307 XSRETURN_EMPTY;
2540} 3308}
2541 3309
2542/*****************************************************************************/ 3310/*****************************************************************************/
3311
3312#if CORO_CLONE
3313# include "clone.c"
3314#endif
3315
3316/*****************************************************************************/
3317
3318static SV *
3319coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3320{
3321 SV *coro_sv;
3322 struct coro *coro;
3323 MAGIC *mg;
3324 HV *hv;
3325 SV *cb;
3326 int i;
3327
3328 if (argc > 0)
3329 {
3330 cb = s_get_cv_croak (argv [0]);
3331
3332 if (!is_coro)
3333 {
3334 if (CvISXSUB (cb))
3335 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3336
3337 if (!CvROOT (cb))
3338 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3339 }
3340 }
3341
3342 Newz (0, coro, 1, struct coro);
3343 coro->args = newAV ();
3344 coro->flags = CF_NEW;
3345
3346 if (coro_first) coro_first->prev = coro;
3347 coro->next = coro_first;
3348 coro_first = coro;
3349
3350 coro->hv = hv = newHV ();
3351 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3352 mg->mg_flags |= MGf_DUP;
3353 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3354
3355 if (argc > 0)
3356 {
3357 av_extend (coro->args, argc + is_coro - 1);
3358
3359 if (is_coro)
3360 {
3361 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3362 cb = (SV *)cv_coro_run;
3363 }
3364
3365 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3366
3367 for (i = 1; i < argc; i++)
3368 av_push (coro->args, newSVsv (argv [i]));
3369 }
3370
3371 return coro_sv;
3372}
3373
3374#ifndef __cplusplus
3375ecb_cold XS(boot_Coro__State);
3376#endif
3377
3378#if CORO_JIT
3379
3380static void ecb_noinline ecb_cold
3381pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3382{
3383 dSP;
3384 AV *av = newAV ();
3385
3386 av_store (av, 3, newSVuv (d));
3387 av_store (av, 2, newSVuv (c));
3388 av_store (av, 1, newSVuv (b));
3389 av_store (av, 0, newSVuv (a));
3390
3391 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3392
3393 PUTBACK;
3394}
3395
3396static void ecb_noinline ecb_cold
3397jit_init (pTHX)
3398{
3399 dSP;
3400 SV *load, *save;
3401 char *map_base;
3402 char *load_ptr, *save_ptr;
3403 STRLEN load_len, save_len, map_len;
3404 int count;
3405
3406 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3407
3408 PUSHMARK (SP);
3409 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3410 #include "state.h"
3411 count = call_pv ("Coro::State::_jit", G_ARRAY);
3412 SPAGAIN;
3413
3414 save = POPs; save_ptr = SvPVbyte (save, save_len);
3415 load = POPs; load_ptr = SvPVbyte (load, load_len);
3416
3417 map_len = load_len + save_len + 16;
3418
3419 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3420
3421 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3422
3423 load_perl_slots = (load_save_perl_slots_type)map_base;
3424 memcpy (map_base, load_ptr, load_len);
3425
3426 map_base += (load_len + 15) & ~15;
3427
3428 save_perl_slots = (load_save_perl_slots_type)map_base;
3429 memcpy (map_base, save_ptr, save_len);
3430
3431 /* we are good citizens and try to make the page read-only, so the evil evil */
3432 /* hackers might have it a bit more difficult */
3433 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3434
3435 PUTBACK;
3436 eval_pv ("undef &Coro::State::_jit", 1);
3437}
3438
3439#endif
2543 3440
2544MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3441MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2545 3442
2546PROTOTYPES: DISABLE 3443PROTOTYPES: DISABLE
2547 3444
… …
2550#ifdef USE_ITHREADS 3447#ifdef USE_ITHREADS
2551# if CORO_PTHREAD 3448# if CORO_PTHREAD
2552 coro_thx = PERL_GET_CONTEXT; 3449 coro_thx = PERL_GET_CONTEXT;
2553# endif 3450# endif
2554#endif 3451#endif
2555 BOOT_PAGESIZE; 3452 /* perl defines these to check for existance first, but why it doesn't */
3453 /* just create them one at init time is not clear to me, except for */
3454 /* programs trying to delete them, but... */
3455 /* anyway, we declare this as invalid and make sure they are initialised here */
3456 DEFSV;
3457 ERRSV;
3458
3459 cctx_current = cctx_new_empty ();
2556 3460
2557 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3461 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2558 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3462 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2559 3463
2560 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3464 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2580 3484
2581 { 3485 {
2582 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3486 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2583 3487
2584 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3488 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2585 hv_store_ent (PL_custom_op_names, slf, 3489 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2586 newSVpv ("coro_slf", 0), 0);
2587 3490
2588 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3491 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2589 hv_store_ent (PL_custom_op_descs, slf, 3492 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2590 newSVpv ("coro schedule like function", 0), 0);
2591 } 3493 }
2592 3494
2593 coroapi.ver = CORO_API_VERSION; 3495 coroapi.ver = CORO_API_VERSION;
2594 coroapi.rev = CORO_API_REVISION; 3496 coroapi.rev = CORO_API_REVISION;
2595 3497
… …
2600 coroapi.prepare_nop = prepare_nop; 3502 coroapi.prepare_nop = prepare_nop;
2601 coroapi.prepare_schedule = prepare_schedule; 3503 coroapi.prepare_schedule = prepare_schedule;
2602 coroapi.prepare_cede = prepare_cede; 3504 coroapi.prepare_cede = prepare_cede;
2603 coroapi.prepare_cede_notself = prepare_cede_notself; 3505 coroapi.prepare_cede_notself = prepare_cede_notself;
2604 3506
2605 { 3507 time_init (aTHX);
2606 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2607 3508
2608 if (!svp) croak ("Time::HiRes is required");
2609 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2610
2611 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2612 }
2613
2614 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3509 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3510#if CORO_JIT
3511 PUTBACK;
3512 jit_init (aTHX);
3513 SPAGAIN;
3514#endif
2615} 3515}
2616 3516
2617SV * 3517SV *
2618new (char *klass, ...) 3518new (SV *klass, ...)
3519 ALIAS:
3520 Coro::new = 1
2619 CODE: 3521 CODE:
2620{ 3522 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2621 struct coro *coro; 3523 OUTPUT:
2622 MAGIC *mg;
2623 HV *hv;
2624 CV *cb;
2625 int i;
2626
2627 if (items > 1)
2628 {
2629 cb = coro_sv_2cv (ST (1));
2630
2631 if (CvISXSUB (cb))
2632 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2633
2634 if (!CvROOT (cb))
2635 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2636 }
2637
2638 Newz (0, coro, 1, struct coro);
2639 coro->args = newAV ();
2640 coro->flags = CF_NEW;
2641
2642 if (coro_first) coro_first->prev = coro;
2643 coro->next = coro_first;
2644 coro_first = coro;
2645
2646 coro->hv = hv = newHV ();
2647 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2648 mg->mg_flags |= MGf_DUP;
2649 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2650
2651 if (items > 1)
2652 {
2653 coro->startcv = SvREFCNT_inc_NN (cb);
2654
2655 av_extend (coro->args, items - 1);
2656 for (i = 2; i < items; i++)
2657 av_push (coro->args, newSVsv (ST (i)));
2658 }
2659}
2660 OUTPUT:
2661 RETVAL 3524 RETVAL
2662 3525
2663void 3526void
2664transfer (...) 3527transfer (...)
2665 PROTOTYPE: $$ 3528 PROTOTYPE: $$
2666 CODE: 3529 CODE:
2667 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3530 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2668 3531
2669bool 3532SV *
2670_destroy (SV *coro_sv) 3533clone (Coro::State coro)
2671 CODE: 3534 CODE:
2672 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3535{
3536#if CORO_CLONE
3537 struct coro *ncoro = coro_clone (aTHX_ coro);
3538 MAGIC *mg;
3539 /* TODO: too much duplication */
3540 ncoro->hv = newHV ();
3541 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3542 mg->mg_flags |= MGf_DUP;
3543 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3544#else
3545 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3546#endif
3547}
2673 OUTPUT: 3548 OUTPUT:
2674 RETVAL 3549 RETVAL
2675
2676void
2677_exit (int code)
2678 PROTOTYPE: $
2679 CODE:
2680 _exit (code);
2681 3550
2682int 3551int
2683cctx_stacksize (int new_stacksize = 0) 3552cctx_stacksize (int new_stacksize = 0)
2684 PROTOTYPE: ;$ 3553 PROTOTYPE: ;$
2685 CODE: 3554 CODE:
… …
2721void 3590void
2722list () 3591list ()
2723 PROTOTYPE: 3592 PROTOTYPE:
2724 PPCODE: 3593 PPCODE:
2725{ 3594{
2726 struct coro *coro; 3595 struct coro *coro;
2727 for (coro = coro_first; coro; coro = coro->next) 3596 for (coro = coro_first; coro; coro = coro->next)
2728 if (coro->hv) 3597 if (coro->hv)
2729 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3598 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2730} 3599}
2731 3600
… …
2735 eval = 1 3604 eval = 1
2736 CODE: 3605 CODE:
2737{ 3606{
2738 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3607 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2739 { 3608 {
2740 struct coro temp; 3609 struct coro *current = SvSTATE_current;
3610 struct CoroSLF slf_save;
2741 3611
2742 if (!(coro->flags & CF_RUNNING)) 3612 if (current != coro)
2743 { 3613 {
2744 PUTBACK; 3614 PUTBACK;
2745 save_perl (aTHX_ &temp); 3615 save_perl (aTHX_ current);
2746 load_perl (aTHX_ coro); 3616 load_perl (aTHX_ coro);
3617 /* the coro is most likely in an active SLF call.
3618 * while not strictly required (the code we execute is
3619 * not allowed to call any SLF functions), it's cleaner
3620 * to reinitialise the slf_frame and restore it later.
3621 * This might one day allow us to actually do SLF calls
3622 * from code executed here.
3623 */
3624 slf_save = slf_frame;
3625 slf_frame.prepare = 0;
3626 SPAGAIN;
2747 } 3627 }
2748 3628
2749 {
2750 dSP;
2751 ENTER;
2752 SAVETMPS;
2753 PUTBACK;
2754 PUSHSTACK; 3629 PUSHSTACK;
3630
2755 PUSHMARK (SP); 3631 PUSHMARK (SP);
3632 PUTBACK;
2756 3633
2757 if (ix) 3634 if (ix)
2758 eval_sv (coderef, 0); 3635 eval_sv (coderef, 0);
2759 else 3636 else
2760 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3637 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2761 3638
2762 POPSTACK; 3639 POPSTACK;
2763 SPAGAIN; 3640 SPAGAIN;
2764 FREETMPS;
2765 LEAVE;
2766 PUTBACK;
2767 }
2768 3641
2769 if (!(coro->flags & CF_RUNNING)) 3642 if (current != coro)
2770 { 3643 {
3644 PUTBACK;
3645 slf_frame = slf_save;
2771 save_perl (aTHX_ coro); 3646 save_perl (aTHX_ coro);
2772 load_perl (aTHX_ &temp); 3647 load_perl (aTHX_ current);
2773 SPAGAIN; 3648 SPAGAIN;
2774 } 3649 }
2775 } 3650 }
2776} 3651}
2777 3652
… …
2780 PROTOTYPE: $ 3655 PROTOTYPE: $
2781 ALIAS: 3656 ALIAS:
2782 is_ready = CF_READY 3657 is_ready = CF_READY
2783 is_running = CF_RUNNING 3658 is_running = CF_RUNNING
2784 is_new = CF_NEW 3659 is_new = CF_NEW
2785 is_destroyed = CF_DESTROYED 3660 is_destroyed = CF_ZOMBIE
3661 is_zombie = CF_ZOMBIE
3662 is_suspended = CF_SUSPENDED
2786 CODE: 3663 CODE:
2787 RETVAL = boolSV (coro->flags & ix); 3664 RETVAL = boolSV (coro->flags & ix);
2788 OUTPUT: 3665 OUTPUT:
2789 RETVAL 3666 RETVAL
2790 3667
2791void 3668void
2792throw (Coro::State self, SV *throw = &PL_sv_undef) 3669throw (SV *self, SV *exception = &PL_sv_undef)
2793 PROTOTYPE: $;$ 3670 PROTOTYPE: $;$
2794 CODE: 3671 CODE:
2795{ 3672{
3673 struct coro *coro = SvSTATE (self);
2796 struct coro *current = SvSTATE_current; 3674 struct coro *current = SvSTATE_current;
2797 SV **throwp = self == current ? &CORO_THROW : &self->except; 3675 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2798 SvREFCNT_dec (*throwp); 3676 SvREFCNT_dec (*exceptionp);
2799 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3677 SvGETMAGIC (exception);
3678 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3679
3680 api_ready (aTHX_ self);
2800} 3681}
2801 3682
2802void 3683void
2803api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3684api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2804 PROTOTYPE: $;$ 3685 PROTOTYPE: $;$
… …
2806 3687
2807SV * 3688SV *
2808has_cctx (Coro::State coro) 3689has_cctx (Coro::State coro)
2809 PROTOTYPE: $ 3690 PROTOTYPE: $
2810 CODE: 3691 CODE:
2811 RETVAL = boolSV (!!coro->cctx); 3692 /* maybe manage the running flag differently */
3693 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2812 OUTPUT: 3694 OUTPUT:
2813 RETVAL 3695 RETVAL
2814 3696
2815int 3697int
2816is_traced (Coro::State coro) 3698is_traced (Coro::State coro)
… …
2836 3718
2837void 3719void
2838force_cctx () 3720force_cctx ()
2839 PROTOTYPE: 3721 PROTOTYPE:
2840 CODE: 3722 CODE:
2841 SvSTATE_current->cctx->idle_sp = 0; 3723 cctx_current->idle_sp = 0;
2842 3724
2843void 3725void
2844swap_defsv (Coro::State self) 3726swap_defsv (Coro::State self)
2845 PROTOTYPE: $ 3727 PROTOTYPE: $
2846 ALIAS: 3728 ALIAS:
… …
2854 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3736 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2855 3737
2856 SV *tmp = *src; *src = *dst; *dst = tmp; 3738 SV *tmp = *src; *src = *dst; *dst = tmp;
2857 } 3739 }
2858 3740
3741void
3742cancel (Coro::State self)
3743 CODE:
3744 coro_state_destroy (aTHX_ self);
3745
3746SV *
3747enable_times (int enabled = enable_times)
3748 CODE:
3749{
3750 RETVAL = boolSV (enable_times);
3751
3752 if (enabled != enable_times)
3753 {
3754 enable_times = enabled;
3755
3756 coro_times_update ();
3757 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3758 }
3759}
3760 OUTPUT:
3761 RETVAL
3762
3763void
3764times (Coro::State self)
3765 PPCODE:
3766{
3767 struct coro *current = SvSTATE (coro_current);
3768
3769 if (ecb_expect_false (current == self))
3770 {
3771 coro_times_update ();
3772 coro_times_add (SvSTATE (coro_current));
3773 }
3774
3775 EXTEND (SP, 2);
3776 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3777 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3778
3779 if (ecb_expect_false (current == self))
3780 coro_times_sub (SvSTATE (coro_current));
3781}
3782
3783void
3784swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3785 CODE:
3786{
3787 struct coro *current = SvSTATE_current;
3788
3789 if (current == coro)
3790 SWAP_SVS (current);
3791
3792 if (!coro->swap_sv)
3793 coro->swap_sv = newAV ();
3794
3795 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3796 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3797
3798 if (current == coro)
3799 SWAP_SVS (current);
3800}
3801
2859 3802
2860MODULE = Coro::State PACKAGE = Coro 3803MODULE = Coro::State PACKAGE = Coro
2861 3804
2862BOOT: 3805BOOT:
2863{ 3806{
2864 int i;
2865
2866 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2867 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3807 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2868 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3808 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2869 3809 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2870 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3810 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2871 SvREADONLY_on (coro_current); 3811 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3812 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3813 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3814 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3815
3816 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3817 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3818 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3819 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2872 3820
2873 coro_stash = gv_stashpv ("Coro", TRUE); 3821 coro_stash = gv_stashpv ("Coro", TRUE);
2874 3822
2875 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3823 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2876 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3824 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2877 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3825 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2878 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3826 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2879 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3827 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2880 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3828 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2881
2882 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2883 coro_ready[i] = newAV ();
2884 3829
2885 { 3830 {
2886 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3831 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2887 3832
2888 coroapi.schedule = api_schedule; 3833 coroapi.schedule = api_schedule;
3834 coroapi.schedule_to = api_schedule_to;
2889 coroapi.cede = api_cede; 3835 coroapi.cede = api_cede;
2890 coroapi.cede_notself = api_cede_notself; 3836 coroapi.cede_notself = api_cede_notself;
2891 coroapi.ready = api_ready; 3837 coroapi.ready = api_ready;
2892 coroapi.is_ready = api_is_ready; 3838 coroapi.is_ready = api_is_ready;
2893 coroapi.nready = coro_nready; 3839 coroapi.nready = coro_nready;
… …
2897 sv_setiv (sv, (IV)&coroapi); 3843 sv_setiv (sv, (IV)&coroapi);
2898 SvREADONLY_on (sv); 3844 SvREADONLY_on (sv);
2899 } 3845 }
2900} 3846}
2901 3847
3848SV *
3849async (...)
3850 PROTOTYPE: &@
3851 CODE:
3852 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3853 api_ready (aTHX_ RETVAL);
3854 OUTPUT:
3855 RETVAL
3856
3857void
3858_destroy (Coro::State coro)
3859 CODE:
3860 /* used by the manager thread */
3861 coro_state_destroy (aTHX_ coro);
3862
3863void
3864on_destroy (Coro::State coro, SV *cb)
3865 CODE:
3866 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3867
3868void
3869join (...)
3870 CODE:
3871 CORO_EXECUTE_SLF_XS (slf_init_join);
3872
3873void
3874terminate (...)
3875 CODE:
3876 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3877
3878void
3879cancel (...)
3880 CODE:
3881 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3882
3883int
3884safe_cancel (Coro::State self, ...)
3885 C_ARGS: aTHX_ self, &ST (1), items - 1
3886
2902void 3887void
2903schedule (...) 3888schedule (...)
2904 CODE: 3889 CODE:
2905 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3890 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3891
3892void
3893schedule_to (...)
3894 CODE:
3895 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3896
3897void
3898cede_to (...)
3899 CODE:
3900 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2906 3901
2907void 3902void
2908cede (...) 3903cede (...)
2909 CODE: 3904 CODE:
2910 CORO_EXECUTE_SLF_XS (slf_init_cede); 3905 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2924void 3919void
2925_set_readyhook (SV *hook) 3920_set_readyhook (SV *hook)
2926 PROTOTYPE: $ 3921 PROTOTYPE: $
2927 CODE: 3922 CODE:
2928 SvREFCNT_dec (coro_readyhook); 3923 SvREFCNT_dec (coro_readyhook);
3924 SvGETMAGIC (hook);
3925 if (SvOK (hook))
3926 {
2929 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3927 coro_readyhook = newSVsv (hook);
3928 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3929 }
3930 else
3931 {
3932 coro_readyhook = 0;
3933 CORO_READYHOOK = 0;
3934 }
2930 3935
2931int 3936int
2932prio (Coro::State coro, int newprio = 0) 3937prio (Coro::State coro, int newprio = 0)
2933 PROTOTYPE: $;$ 3938 PROTOTYPE: $;$
2934 ALIAS: 3939 ALIAS:
… …
2940 if (items > 1) 3945 if (items > 1)
2941 { 3946 {
2942 if (ix) 3947 if (ix)
2943 newprio = coro->prio - newprio; 3948 newprio = coro->prio - newprio;
2944 3949
2945 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3950 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2946 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3951 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2947 3952
2948 coro->prio = newprio; 3953 coro->prio = newprio;
2949 } 3954 }
2950} 3955}
2951 OUTPUT: 3956 OUTPUT:
… …
2965 CODE: 3970 CODE:
2966 RETVAL = coro_nready; 3971 RETVAL = coro_nready;
2967 OUTPUT: 3972 OUTPUT:
2968 RETVAL 3973 RETVAL
2969 3974
2970# for async_pool speedup
2971void 3975void
2972_pool_1 (SV *cb) 3976suspend (Coro::State self)
3977 PROTOTYPE: $
2973 CODE: 3978 CODE:
2974{ 3979 self->flags |= CF_SUSPENDED;
2975 HV *hv = (HV *)SvRV (coro_current);
2976 struct coro *coro = SvSTATE_hv ((SV *)hv);
2977 AV *defav = GvAV (PL_defgv);
2978 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2979 AV *invoke_av;
2980 int i, len;
2981 3980
2982 if (!invoke) 3981void
3982resume (Coro::State self)
3983 PROTOTYPE: $
3984 CODE:
3985 self->flags &= ~CF_SUSPENDED;
3986
3987void
3988_pool_handler (...)
3989 CODE:
3990 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3991
3992void
3993async_pool (SV *cv, ...)
3994 PROTOTYPE: &@
3995 PPCODE:
3996{
3997 HV *hv = (HV *)av_pop (av_async_pool);
3998 AV *av = newAV ();
3999 SV *cb = ST (0);
4000 int i;
4001
4002 av_extend (av, items - 2);
4003 for (i = 1; i < items; ++i)
4004 av_push (av, SvREFCNT_inc_NN (ST (i)));
4005
4006 if ((SV *)hv == &PL_sv_undef)
2983 { 4007 {
2984 SV *old = PL_diehook; 4008 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2985 PL_diehook = 0; 4009 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2986 SvREFCNT_dec (old); 4010 SvREFCNT_dec (sv);
2987 croak ("\3async_pool terminate\2\n");
2988 } 4011 }
2989 4012
2990 SvREFCNT_dec (coro->saved_deffh);
2991 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2992
2993 hv_store (hv, "desc", sizeof ("desc") - 1,
2994 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2995
2996 invoke_av = (AV *)SvRV (invoke);
2997 len = av_len (invoke_av);
2998
2999 sv_setsv (cb, AvARRAY (invoke_av)[0]);
3000
3001 if (len > 0)
3002 { 4013 {
3003 av_fill (defav, len - 1); 4014 struct coro *coro = SvSTATE_hv (hv);
3004 for (i = 0; i < len; ++i) 4015
3005 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4016 assert (!coro->invoke_cb);
4017 assert (!coro->invoke_av);
4018 coro->invoke_cb = SvREFCNT_inc (cb);
4019 coro->invoke_av = av;
3006 } 4020 }
3007}
3008 4021
3009void 4022 api_ready (aTHX_ (SV *)hv);
3010_pool_2 (SV *cb)
3011 CODE:
3012{
3013 HV *hv = (HV *)SvRV (coro_current);
3014 struct coro *coro = SvSTATE_hv ((SV *)hv);
3015 4023
3016 sv_setsv (cb, &PL_sv_undef); 4024 if (GIMME_V != G_VOID)
3017 4025 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3018 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4026 else
3019 coro->saved_deffh = 0;
3020
3021 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
3022 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
3023 {
3024 SV *old = PL_diehook;
3025 PL_diehook = 0;
3026 SvREFCNT_dec (old); 4027 SvREFCNT_dec (hv);
3027 croak ("\3async_pool terminate\2\n");
3028 }
3029
3030 av_clear (GvAV (PL_defgv));
3031 hv_store (hv, "desc", sizeof ("desc") - 1,
3032 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
3033
3034 coro->prio = 0;
3035
3036 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
3037 api_trace (aTHX_ coro_current, 0);
3038
3039 av_push (av_async_pool, newSVsv (coro_current));
3040} 4028}
3041 4029
3042SV * 4030SV *
3043rouse_cb () 4031rouse_cb ()
3044 PROTOTYPE: 4032 PROTOTYPE:
… …
3051rouse_wait (...) 4039rouse_wait (...)
3052 PROTOTYPE: ;$ 4040 PROTOTYPE: ;$
3053 PPCODE: 4041 PPCODE:
3054 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4042 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3055 4043
4044void
4045on_enter (SV *block)
4046 ALIAS:
4047 on_leave = 1
4048 PROTOTYPE: &
4049 CODE:
4050{
4051 struct coro *coro = SvSTATE_current;
4052 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4053
4054 block = s_get_cv_croak (block);
4055
4056 if (!*avp)
4057 *avp = newAV ();
4058
4059 av_push (*avp, SvREFCNT_inc (block));
4060
4061 if (!ix)
4062 on_enterleave_call (aTHX_ block);
4063
4064 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4065 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4066 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4067}
4068
3056 4069
3057MODULE = Coro::State PACKAGE = PerlIO::cede 4070MODULE = Coro::State PACKAGE = PerlIO::cede
3058 4071
3059BOOT: 4072BOOT:
3060 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4073 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3063MODULE = Coro::State PACKAGE = Coro::Semaphore 4076MODULE = Coro::State PACKAGE = Coro::Semaphore
3064 4077
3065SV * 4078SV *
3066new (SV *klass, SV *count = 0) 4079new (SV *klass, SV *count = 0)
3067 CODE: 4080 CODE:
4081{
4082 int semcnt = 1;
4083
4084 if (count)
4085 {
4086 SvGETMAGIC (count);
4087
4088 if (SvOK (count))
4089 semcnt = SvIV (count);
4090 }
4091
3068 RETVAL = sv_bless ( 4092 RETVAL = sv_bless (
3069 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4093 coro_waitarray_new (aTHX_ semcnt),
3070 GvSTASH (CvGV (cv)) 4094 GvSTASH (CvGV (cv))
3071 ); 4095 );
4096}
3072 OUTPUT: 4097 OUTPUT:
3073 RETVAL 4098 RETVAL
3074 4099
3075# helper for Coro::Channel 4100# helper for Coro::Channel and others
3076SV * 4101SV *
3077_alloc (int count) 4102_alloc (int count)
3078 CODE: 4103 CODE:
3079 RETVAL = coro_waitarray_new (aTHX_ count); 4104 RETVAL = coro_waitarray_new (aTHX_ count);
3080 OUTPUT: 4105 OUTPUT:
… …
3122 XSRETURN_NO; 4147 XSRETURN_NO;
3123} 4148}
3124 4149
3125void 4150void
3126waiters (SV *self) 4151waiters (SV *self)
3127 PPCODE: 4152 PPCODE:
3128{ 4153{
3129 AV *av = (AV *)SvRV (self); 4154 AV *av = (AV *)SvRV (self);
3130 int wcount = AvFILLp (av) + 1 - 1; 4155 int wcount = AvFILLp (av) + 1 - 1;
3131 4156
3132 if (GIMME_V == G_SCALAR) 4157 if (GIMME_V == G_SCALAR)
… …
3138 for (i = 1; i <= wcount; ++i) 4163 for (i = 1; i <= wcount; ++i)
3139 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4164 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3140 } 4165 }
3141} 4166}
3142 4167
4168MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4169
4170void
4171_may_delete (SV *sem, int count, unsigned int extra_refs)
4172 PPCODE:
4173{
4174 AV *av = (AV *)SvRV (sem);
4175
4176 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4177 && AvFILLp (av) == 0 /* no waiters, just count */
4178 && SvIV (AvARRAY (av)[0]) == count)
4179 XSRETURN_YES;
4180
4181 XSRETURN_NO;
4182}
4183
3143MODULE = Coro::State PACKAGE = Coro::Signal 4184MODULE = Coro::State PACKAGE = Coro::Signal
3144 4185
3145SV * 4186SV *
3146new (SV *klass) 4187new (SV *klass)
3147 CODE: 4188 CODE:
… …
3159 4200
3160void 4201void
3161broadcast (SV *self) 4202broadcast (SV *self)
3162 CODE: 4203 CODE:
3163{ 4204{
3164 AV *av = (AV *)SvRV (self); 4205 AV *av = (AV *)SvRV (self);
3165 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4206 coro_signal_wake (aTHX_ av, AvFILLp (av));
3166} 4207}
3167 4208
3168void 4209void
3169send (SV *self) 4210send (SV *self)
… …
3177 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4218 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3178} 4219}
3179 4220
3180IV 4221IV
3181awaited (SV *self) 4222awaited (SV *self)
3182 CODE: 4223 CODE:
3183 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4224 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3184 OUTPUT: 4225 OUTPUT:
3185 RETVAL 4226 RETVAL
3186 4227
3187 4228
… …
3192 4233
3193void 4234void
3194_schedule (...) 4235_schedule (...)
3195 CODE: 4236 CODE:
3196{ 4237{
3197 static int incede; 4238 static int incede;
3198 4239
3199 api_cede_notself (aTHX); 4240 api_cede_notself (aTHX);
3200 4241
3201 ++incede; 4242 ++incede;
3202 while (coro_nready >= incede && api_cede (aTHX)) 4243 while (coro_nready >= incede && api_cede (aTHX))
… …
3218 4259
3219void 4260void
3220_register (char *target, char *proto, SV *req) 4261_register (char *target, char *proto, SV *req)
3221 CODE: 4262 CODE:
3222{ 4263{
3223 CV *req_cv = coro_sv_2cv (req); 4264 SV *req_cv = s_get_cv_croak (req);
3224 /* newXSproto doesn't return the CV on 5.8 */ 4265 /* newXSproto doesn't return the CV on 5.8 */
3225 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4266 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3226 sv_setpv ((SV *)slf_cv, proto); 4267 sv_setpv ((SV *)slf_cv, proto);
3227 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4268 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3228} 4269}
3229 4270
4271MODULE = Coro::State PACKAGE = Coro::Select
4272
4273void
4274patch_pp_sselect ()
4275 CODE:
4276 if (!coro_old_pp_sselect)
4277 {
4278 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4279 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4280 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4281 }
4282
4283void
4284unpatch_pp_sselect ()
4285 CODE:
4286 if (coro_old_pp_sselect)
4287 {
4288 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4289 coro_old_pp_sselect = 0;
4290 }
4291
4292MODULE = Coro::State PACKAGE = Coro::Util
4293
4294void
4295_exit (int code)
4296 CODE:
4297 _exit (code);
4298
4299NV
4300time ()
4301 CODE:
4302 RETVAL = nvtime (aTHX);
4303 OUTPUT:
4304 RETVAL
4305
4306NV
4307gettimeofday ()
4308 PPCODE:
4309{
4310 UV tv [2];
4311 u2time (aTHX_ tv);
4312 EXTEND (SP, 2);
4313 PUSHs (sv_2mortal (newSVuv (tv [0])));
4314 PUSHs (sv_2mortal (newSVuv (tv [1])));
4315}
4316

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