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Comparing Coro/Coro/State.xs (file contents):
Revision 1.283 by root, Sun Nov 16 11:12:57 2008 UTC vs.
Revision 1.466 by root, Sat Jun 25 19:22:33 2016 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SvREFCNT_dec_NN
28 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
29#endif
30
31#ifndef SvREFCNT_inc_NN
32 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
33#endif
34
35#ifndef SVs_PADSTALE
36# define SVs_PADSTALE 0
37#endif
38
39#ifdef PadARRAY
40# define NEWPADAPI 1
41# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
42#else
43typedef AV PADNAMELIST;
44# if !PERL_VERSION_ATLEAST(5,8,0)
45typedef AV PADLIST;
46typedef AV PAD;
47# endif
48# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
49# define PadlistMAX(pl) AvFILLp (pl)
50# define PadlistNAMES(pl) (*PadlistARRAY (pl))
51# define PadARRAY AvARRAY
52# define PadMAX AvFILLp
53# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
54#endif
55#ifndef PadnamelistREFCNT
56# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
57#endif
58#ifndef PadnamelistREFCNT_dec
59# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
60#endif
61
62/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
63/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
64#if PERL_VERSION_ATLEAST(5,19,0)
65# define SVt_BIND SVt_IV
66#endif
67
68#if defined(_WIN32)
69# undef HAS_GETTIMEOFDAY
18# undef setjmp 70# undef setjmp
19# undef longjmp 71# undef longjmp
20# undef _exit 72# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 73# define setjmp _setjmp /* deep magic */
22#else 74#else
23# include <inttypes.h> /* most portable stdint.h */ 75# include <inttypes.h> /* most portable stdint.h */
24#endif 76#endif
25 77
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 78/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 79static int cctx_max_idle = 4;
55 80
56#define PERL_VERSION_ATLEAST(a,b,c) \ 81#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 82# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && 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
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD
108#endif
109
110#ifndef CORO_STACKGUARD
111# define CORO_STACKGUARD 0
112#endif 83#endif
113 84
114/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 88#endif
118 89
119/* The next macros try to return the current stack pointer, in an as 90/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 91 * portable way as possible. */
121#if __GNUC__ >= 4 92#if __GNUC__ >= 4
93# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 94# define STACKLEVEL __builtin_frame_address (0)
123#else 95#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 96# define dSTACKLEVEL volatile void *stacklevel
97# define STACKLEVEL ((void *)&stacklevel)
125#endif 98#endif
126 99
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 100#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 101
144#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
145 104
146#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
147# if CORO_PTHREAD 106# if CORO_PTHREAD
148static void *coro_thx; 107static void *coro_thx;
149# endif 108# endif
150#endif 109#endif
151 110
152/* helper storage struct for Coro::AIO */ 111#ifdef __linux
153struct io_state 112# include <time.h> /* for timespec */
154{ 113# include <syscall.h> /* for SYS_* */
155 AV *res; 114# ifdef SYS_clock_gettime
156 int errorno; 115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 116# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 118# endif
160}; 119#endif
120
121/* perl usually suppressed asserts. for debugging, we sometimes force it to be on */
122#if 0
123# undef NDEBUG
124# include <assert.h>
125#endif
161 126
162static double (*nvtime)(); /* so why doesn't it take void? */ 127static double (*nvtime)(); /* so why doesn't it take void? */
128static void (*u2time)(pTHX_ UV ret[2]);
129
130/* we hijack an hopefully unused CV flag for our purposes */
131#define CVf_SLF 0x4000
132static OP *pp_slf (pTHX);
133static void slf_destroy (pTHX_ struct coro *coro);
163 134
164static U32 cctx_gen; 135static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 136static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 137static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 138static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 139static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 140static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 141static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 142
143static AV *av_destroy; /* destruction queue */
144static SV *sv_manager; /* the manager coro */
145static SV *sv_idle; /* $Coro::idle */
146
172static GV *irsgv; /* $/ */ 147static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 148static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 149static SV *rv_diehook;
175static SV *rv_warnhook; 150static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
177 151
178/* async_pool helper stuff */ 152/* async_pool helper stuff */
179static SV *sv_pool_rss; 153static SV *sv_pool_rss;
180static SV *sv_pool_size; 154static SV *sv_pool_size;
155static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 156static AV *av_async_pool; /* idle pool */
157static SV *sv_Coro; /* class string */
158static CV *cv_pool_handler;
182 159
183/* Coro::AnyEvent */ 160/* Coro::AnyEvent */
184static SV *sv_activity; 161static SV *sv_activity;
185 162
163/* enable processtime/realtime profiling */
164static char enable_times;
165typedef U32 coro_ts[2];
166static coro_ts time_real, time_cpu;
167static char times_valid;
168
186static struct coro_cctx *cctx_first; 169static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 170static int cctx_count, cctx_idle;
188 171
189enum { 172enum
173{
190 CC_MAPPED = 0x01, 174 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 175 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 176 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 177 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 178 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
199typedef struct coro_cctx 183typedef struct coro_cctx
200{ 184{
201 struct coro_cctx *next; 185 struct coro_cctx *next;
202 186
203 /* the stack */ 187 /* the stack */
204 void *sptr; 188 struct coro_stack stack;
205 size_t ssize;
206 189
207 /* cpu state */ 190 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 191 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
192#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 193 JMPENV *idle_te; /* same as idle_sp, but for top_env */
194#endif
210 JMPENV *top_env; 195 JMPENV *top_env;
211 coro_context cctx; 196 coro_context cctx;
212 197
213 U32 gen; 198 U32 gen;
214#if CORO_USE_VALGRIND 199#if CORO_USE_VALGRIND
215 int valgrind_id; 200 int valgrind_id;
216#endif 201#endif
217 unsigned char flags; 202 unsigned char flags;
218} coro_cctx; 203} coro_cctx;
219 204
205static coro_cctx *cctx_current; /* the currently running cctx */
206
207/*****************************************************************************/
208
209static MGVTBL coro_state_vtbl;
210
220enum { 211enum
212{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 213 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 214 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 215 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 216 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
217 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
218 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 219};
226 220
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 221/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 222typedef struct
229{ 223{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 224 #define VARx(name,expr,type) type name;
235# include "state.h" 225 #include "state.h"
236#undef VAR
237} perl_slots; 226} perl_slots;
238 227
228/* 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)) 229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 230
241/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
242struct coro { 232struct coro
233{
243 /* the C coroutine allocated to this perl coroutine, if any */ 234 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 235 coro_cctx *cctx;
245 236
246 /* process data */ 237 /* ready queue */
238 struct coro *next_ready;
239
240 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 241 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 242 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 243 perl_slots *slot; /* basically the saved sp */
250 244
245 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 246 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 247 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 248 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 249
257 /* statistics */ 250 /* statistics */
258 int usecount; /* number of transfers to this coro */ 251 int usecount; /* number of transfers to this coro */
259 252
260 /* coro process data */ 253 /* coro process data */
261 int prio; 254 int prio;
262 SV *throw; /* exception to be thrown */ 255 SV *except; /* exception to be thrown */
256 SV *rouse_cb; /* last rouse callback */
257 AV *on_destroy; /* callbacks or coros to notify on destroy */
258 AV *status; /* the exit status list */
263 259
264 /* async_pool */ 260 /* async_pool */
265 SV *saved_deffh; 261 SV *saved_deffh;
262 SV *invoke_cb;
263 AV *invoke_av;
264
265 /* on_enter/on_leave */
266 AV *on_enter; AV *on_enter_xs;
267 AV *on_leave; AV *on_leave_xs;
268
269 /* swap_sv */
270 AV *swap_sv;
271
272 /* times */
273 coro_ts t_cpu, t_real;
266 274
267 /* linked list */ 275 /* linked list */
268 struct coro *next, *prev; 276 struct coro *next, *prev;
269}; 277};
270 278
271typedef struct coro *Coro__State; 279typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 280typedef struct coro *Coro__State_or_hashref;
273 281
282/* the following variables are effectively part of the perl context */
283/* and get copied between struct coro and these variables */
284/* the main reason we don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 285static struct CoroSLF slf_frame; /* the current slf frame */
275 286
276/** Coro ********************************************************************/ 287/** Coro ********************************************************************/
277 288
278#define PRIO_MAX 3 289#define CORO_PRIO_MAX 3
279#define PRIO_HIGH 1 290#define CORO_PRIO_HIGH 1
280#define PRIO_NORMAL 0 291#define CORO_PRIO_NORMAL 0
281#define PRIO_LOW -1 292#define CORO_PRIO_LOW -1
282#define PRIO_IDLE -3 293#define CORO_PRIO_IDLE -3
283#define PRIO_MIN -4 294#define CORO_PRIO_MIN -4
284 295
285/* for Coro.pm */ 296/* for Coro.pm */
286static SV *coro_current; 297static SV *coro_current;
287static SV *coro_readyhook; 298static SV *coro_readyhook;
288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 299static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
300static CV *cv_coro_run;
289static struct coro *coro_first; 301static struct coro *coro_first;
290#define coro_nready coroapi.nready 302#define coro_nready coroapi.nready
291 303
304/** JIT *********************************************************************/
305
306#if CORO_JIT
307 /* APPLE doesn't have mmap though */
308 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
309 #ifndef CORO_JIT_TYPE
310 #if ECB_AMD64 && CORO_JIT_UNIXY
311 #define CORO_JIT_TYPE "amd64-unix"
312 #elif __i386 && CORO_JIT_UNIXY
313 #define CORO_JIT_TYPE "x86-unix"
314 #endif
315 #endif
316#endif
317
318#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
319 #undef CORO_JIT
320#endif
321
322#if CORO_JIT
323 typedef void (*load_save_perl_slots_type)(perl_slots *);
324 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
325#endif
326
327/** Coro::Select ************************************************************/
328
329static OP *(*coro_old_pp_sselect) (pTHX);
330static SV *coro_select_select;
331
332/* horrible hack, but if it works... */
333static OP *
334coro_pp_sselect (pTHX)
335{
336 dSP;
337 PUSHMARK (SP - 4); /* fake argument list */
338 XPUSHs (coro_select_select);
339 PUTBACK;
340
341 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
342 PL_op->op_flags |= OPf_STACKED;
343 PL_op->op_private = 0;
344 return PL_ppaddr [OP_ENTERSUB](aTHX);
345}
346
347/** time stuff **************************************************************/
348
349#ifdef HAS_GETTIMEOFDAY
350
351ecb_inline void
352coro_u2time (pTHX_ UV ret[2])
353{
354 struct timeval tv;
355 gettimeofday (&tv, 0);
356
357 ret [0] = tv.tv_sec;
358 ret [1] = tv.tv_usec;
359}
360
361ecb_inline double
362coro_nvtime (void)
363{
364 struct timeval tv;
365 gettimeofday (&tv, 0);
366
367 return tv.tv_sec + tv.tv_usec * 1e-6;
368}
369
370ecb_inline void
371time_init (pTHX)
372{
373 nvtime = coro_nvtime;
374 u2time = coro_u2time;
375}
376
377#else
378
379ecb_inline void
380time_init (pTHX)
381{
382 SV **svp;
383
384 require_pv ("Time/HiRes.pm");
385
386 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
387
388 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
389 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
390
391 nvtime = INT2PTR (double (*)(), SvIV (*svp));
392
393 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
394 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
395}
396
397#endif
398
292/** lowlevel stuff **********************************************************/ 399/** lowlevel stuff **********************************************************/
293 400
294static SV * 401static SV * ecb_noinline
295coro_get_sv (pTHX_ const char *name, int create) 402coro_get_sv (pTHX_ const char *name, int create)
296{ 403{
297#if PERL_VERSION_ATLEAST (5,10,0) 404#if PERL_VERSION_ATLEAST (5,10,0)
298 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 405 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
299 get_sv (name, create); 406 get_sv (name, create);
300#endif 407#endif
301 return get_sv (name, create); 408 return get_sv (name, create);
302} 409}
303 410
304static AV * 411static AV * ecb_noinline
305coro_get_av (pTHX_ const char *name, int create) 412coro_get_av (pTHX_ const char *name, int create)
306{ 413{
307#if PERL_VERSION_ATLEAST (5,10,0) 414#if PERL_VERSION_ATLEAST (5,10,0)
308 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 415 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
309 get_av (name, create); 416 get_av (name, create);
310#endif 417#endif
311 return get_av (name, create); 418 return get_av (name, create);
312} 419}
313 420
314static HV * 421static HV * ecb_noinline
315coro_get_hv (pTHX_ const char *name, int create) 422coro_get_hv (pTHX_ const char *name, int create)
316{ 423{
317#if PERL_VERSION_ATLEAST (5,10,0) 424#if PERL_VERSION_ATLEAST (5,10,0)
318 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 425 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
319 get_hv (name, create); 426 get_hv (name, create);
320#endif 427#endif
321 return get_hv (name, create); 428 return get_hv (name, create);
322} 429}
323 430
324static AV * 431ecb_inline void
432coro_times_update (void)
433{
434#ifdef coro_clock_gettime
435 struct timespec ts;
436
437 ts.tv_sec = ts.tv_nsec = 0;
438 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
439 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
440
441 ts.tv_sec = ts.tv_nsec = 0;
442 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
443 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
444#else
445 dTHX;
446 UV tv[2];
447
448 u2time (aTHX_ tv);
449 time_real [0] = tv [0];
450 time_real [1] = tv [1] * 1000;
451#endif
452}
453
454ecb_inline void
455coro_times_add (struct coro *c)
456{
457 c->t_real [1] += time_real [1];
458 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
459 c->t_real [0] += time_real [0];
460
461 c->t_cpu [1] += time_cpu [1];
462 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
463 c->t_cpu [0] += time_cpu [0];
464}
465
466ecb_inline void
467coro_times_sub (struct coro *c)
468{
469 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
470 c->t_real [1] -= time_real [1];
471 c->t_real [0] -= time_real [0];
472
473 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
474 c->t_cpu [1] -= time_cpu [1];
475 c->t_cpu [0] -= time_cpu [0];
476}
477
478/*****************************************************************************/
479/* magic glue */
480
481#define CORO_MAGIC_type_cv 26
482#define CORO_MAGIC_type_state PERL_MAGIC_ext
483
484#define CORO_MAGIC_NN(sv, type) \
485 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
486 ? SvMAGIC (sv) \
487 : mg_find (sv, type))
488
489#define CORO_MAGIC(sv, type) \
490 (ecb_expect_true (SvMAGIC (sv)) \
491 ? CORO_MAGIC_NN (sv, type) \
492 : 0)
493
494#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
495#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
496
497ecb_inline MAGIC *
498SvSTATEhv_p (pTHX_ SV *coro)
499{
500 MAGIC *mg;
501
502 if (ecb_expect_true (
503 SvTYPE (coro) == SVt_PVHV
504 && (mg = CORO_MAGIC_state (coro))
505 && mg->mg_virtual == &coro_state_vtbl
506 ))
507 return mg;
508
509 return 0;
510}
511
512ecb_inline struct coro *
513SvSTATE_ (pTHX_ SV *coro_sv)
514{
515 MAGIC *mg;
516
517 if (SvROK (coro_sv))
518 coro_sv = SvRV (coro_sv);
519
520 mg = SvSTATEhv_p (aTHX_ coro_sv);
521 if (!mg)
522 croak ("Coro::State object required");
523
524 return (struct coro *)mg->mg_ptr;
525}
526
527#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
528
529/* faster than SvSTATE, but expects a coroutine hv */
530#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
531#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
532
533/*****************************************************************************/
534/* padlist management and caching */
535
536ecb_inline PADLIST *
325coro_clone_padlist (pTHX_ CV *cv) 537coro_derive_padlist (pTHX_ CV *cv)
326{ 538{
327 AV *padlist = CvPADLIST (cv); 539 PADLIST *padlist = CvPADLIST (cv);
328 AV *newpadlist, *newpad; 540 PADLIST *newpadlist;
541 PADNAMELIST *padnames;
542 PAD *newpad;
543 PADOFFSET off = PadlistMAX (padlist) + 1;
329 544
330 newpadlist = newAV (); 545#if NEWPADAPI
546
547 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
548 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
549 while (!PadlistARRAY (padlist)[off - 1])
550 --off;
551
552 Perl_pad_push (aTHX_ padlist, off);
553
554 newpad = PadlistARRAY (padlist)[off];
555 PadlistARRAY (padlist)[off] = 0;
556
557#else
558
559#if PERL_VERSION_ATLEAST (5,10,0)
560 Perl_pad_push (aTHX_ padlist, off);
561#else
562 Perl_pad_push (aTHX_ padlist, off, 1);
563#endif
564
565 newpad = PadlistARRAY (padlist)[off];
566 PadlistMAX (padlist) = off - 1;
567
568#endif
569
570 newPADLIST (newpadlist);
571#if !PERL_VERSION_ATLEAST(5,15,3)
572 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
331 AvREAL_off (newpadlist); 573 AvREAL_off (newpadlist);
332#if PERL_VERSION_ATLEAST (5,10,0)
333 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
334#else
335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
336#endif 574#endif
337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
338 --AvFILLp (padlist);
339 575
340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 576 /* Already extended to 2 elements by newPADLIST. */
341 av_store (newpadlist, 1, (SV *)newpad); 577 PadlistMAX (newpadlist) = 1;
578
579 padnames = PadlistNAMES (padlist);
580 ++PadnamelistREFCNT (padnames);
581 PadlistNAMES (newpadlist) = padnames;
582
583 PadlistARRAY (newpadlist)[1] = newpad;
342 584
343 return newpadlist; 585 return newpadlist;
344} 586}
345 587
346static void 588ecb_inline void
347free_padlist (pTHX_ AV *padlist) 589free_padlist (pTHX_ PADLIST *padlist)
348{ 590{
349 /* may be during global destruction */ 591 /* may be during global destruction */
350 if (SvREFCNT (padlist)) 592 if (!IN_DESTRUCT)
351 { 593 {
352 I32 i = AvFILLp (padlist); 594 I32 i = PadlistMAX (padlist);
353 while (i >= 0) 595
596 while (i > 0) /* special-case index 0 */
354 { 597 {
355 SV **svp = av_fetch (padlist, i--, FALSE); 598 /* we try to be extra-careful here */
599 PAD *pad = PadlistARRAY (padlist)[i--];
600
356 if (svp) 601 if (pad)
357 { 602 {
358 SV *sv; 603 I32 j = PadMAX (pad);
359 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 604
605 while (j >= 0)
360 SvREFCNT_dec (sv); 606 SvREFCNT_dec (PadARRAY (pad)[j--]);
361 607
608 PadMAX (pad) = -1;
362 SvREFCNT_dec (*svp); 609 SvREFCNT_dec (pad);
363 } 610 }
364 } 611 }
365 612
613 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
614
615#if NEWPADAPI
616 Safefree (PadlistARRAY (padlist));
617 Safefree (padlist);
618#else
619 AvFILLp (padlist) = -1;
620 AvREAL_off (padlist);
366 SvREFCNT_dec ((SV*)padlist); 621 SvREFCNT_dec ((SV*)padlist);
622#endif
367 } 623 }
368} 624}
369 625
370static int 626static int
371coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 627coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
372{ 628{
373 AV *padlist; 629 PADLIST *padlist;
374 AV *av = (AV *)mg->mg_obj; 630 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
631 size_t len = *(size_t *)mg->mg_ptr;
375 632
376 /* casting is fun. */ 633 /* perl manages to free our internal AV and _then_ call us */
377 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 634 if (IN_DESTRUCT)
635 return 0;
636
637 while (len--)
378 free_padlist (aTHX_ padlist); 638 free_padlist (aTHX_ padlists[len]);
379
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381 639
382 return 0; 640 return 0;
383} 641}
384
385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
386#define CORO_MAGIC_type_state PERL_MAGIC_ext
387 642
388static MGVTBL coro_cv_vtbl = { 643static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0, 644 0, 0, 0, 0,
390 coro_cv_free 645 coro_cv_free
391}; 646};
392 647
393#define CORO_MAGIC(sv, type) \
394 expect_true (SvMAGIC (sv)) \
395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type) \
398 : 0
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441
442/* the next two functions merely cache the padlists */ 648/* the next two functions merely cache the padlists */
443static void 649ecb_inline void
444get_padlist (pTHX_ CV *cv) 650get_padlist (pTHX_ CV *cv)
445{ 651{
446 MAGIC *mg = CORO_MAGIC_cv (cv); 652 MAGIC *mg = CORO_MAGIC_cv (cv);
447 AV *av; 653 size_t *lenp;
448 654
449 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 655 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
450 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 656 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
451 else 657 else
452 { 658 {
453#if CORO_PREFER_PERL_FUNCTIONS 659#if CORO_PREFER_PERL_FUNCTIONS
454 /* this is probably cleaner? but also slower! */ 660 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */ 661 /* in practise, it seems to be less stable */
456 CV *cp = Perl_cv_clone (cv); 662 CV *cp = Perl_cv_clone (aTHX_ cv);
457 CvPADLIST (cv) = CvPADLIST (cp); 663 CvPADLIST (cv) = CvPADLIST (cp);
458 CvPADLIST (cp) = 0; 664 CvPADLIST (cp) = 0;
459 SvREFCNT_dec (cp); 665 SvREFCNT_dec (cp);
460#else 666#else
461 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 667 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
462#endif 668#endif
463 } 669 }
464} 670}
465 671
466static void 672ecb_inline void
467put_padlist (pTHX_ CV *cv) 673put_padlist (pTHX_ CV *cv)
468{ 674{
469 MAGIC *mg = CORO_MAGIC_cv (cv); 675 MAGIC *mg = CORO_MAGIC_cv (cv);
470 AV *av;
471 676
472 if (expect_false (!mg)) 677 if (ecb_expect_false (!mg))
678 {
473 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 679 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
680 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
681 mg->mg_len = 1; /* so mg_free frees mg_ptr */
682 }
683 else
684 Renew (mg->mg_ptr,
685 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
686 char);
474 687
475 av = (AV *)mg->mg_obj; 688 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
476
477 if (expect_false (AvFILLp (av) >= AvMAX (av)))
478 av_extend (av, AvMAX (av) + 1);
479
480 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
481} 689}
482 690
483/** load & save, init *******************************************************/ 691/** load & save, init *******************************************************/
692
693ecb_inline void
694swap_sv (SV *a, SV *b)
695{
696 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
697 SV tmp;
698
699 /* swap sv_any */
700 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
701
702 /* swap sv_flags */
703 SvFLAGS (&tmp) = SvFLAGS (a);
704 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
705 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
706
707#if PERL_VERSION_ATLEAST (5,10,0)
708 /* perl 5.10 and later complicates this _quite_ a bit, but it also
709 * is much faster, so no quarrels here. alternatively, we could
710 * sv_upgrade to avoid this.
711 */
712 {
713 /* swap sv_u */
714 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
715
716 /* if SvANY points to the head, we need to adjust the pointers,
717 * as the pointer for a still points to b, and maybe vice versa.
718 */
719 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
720 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
721 svany_in_head_set |= 1 << SVt_NV;
722 #endif
723
724 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
725
726 if (svany_in_head (SvTYPE (a)))
727 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
728
729 if (svany_in_head (SvTYPE (b)))
730 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
731 }
732#endif
733}
734
735/* swap sv heads, at least logically */
736static void
737swap_svs_enter (pTHX_ Coro__State c)
738{
739 int i;
740
741 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
742 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
743}
744
745static void
746swap_svs_leave (pTHX_ Coro__State c)
747{
748 int i;
749
750 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
751 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
752}
753
754#define SWAP_SVS_ENTER(coro) \
755 if (ecb_expect_false ((coro)->swap_sv)) \
756 swap_svs_enter (aTHX_ (coro))
757
758#define SWAP_SVS_LEAVE(coro) \
759 if (ecb_expect_false ((coro)->swap_sv)) \
760 swap_svs_leave (aTHX_ (coro))
761
762static void
763on_enterleave_call (pTHX_ SV *cb);
484 764
485static void 765static void
486load_perl (pTHX_ Coro__State c) 766load_perl (pTHX_ Coro__State c)
487{ 767{
488 perl_slots *slot = c->slot; 768 perl_slots *slot = c->slot;
489 c->slot = 0; 769 c->slot = 0;
490 770
491 PL_mainstack = c->mainstack; 771 PL_mainstack = c->mainstack;
492 772
493 GvSV (PL_defgv) = slot->defsv; 773#if CORO_JIT
494 GvAV (PL_defgv) = slot->defav; 774 load_perl_slots (slot);
495 GvSV (PL_errgv) = slot->errsv; 775#else
496 GvSV (irsgv) = slot->irsgv;
497
498 #define VAR(name,type) PL_ ## name = slot->name; 776 #define VARx(name,expr,type) expr = slot->name;
499 # include "state.h" 777 #include "state.h"
500 #undef VAR 778#endif
501 779
502 { 780 {
503 dSP; 781 dSP;
504 782
505 CV *cv; 783 CV *cv;
506 784
507 /* now do the ugly restore mess */ 785 /* now do the ugly restore mess */
508 while (expect_true (cv = (CV *)POPs)) 786 while (ecb_expect_true (cv = (CV *)POPs))
509 { 787 {
510 put_padlist (aTHX_ cv); /* mark this padlist as available */ 788 put_padlist (aTHX_ cv); /* mark this padlist as available */
511 CvDEPTH (cv) = PTR2IV (POPs); 789 CvDEPTH (cv) = PTR2IV (POPs);
512 CvPADLIST (cv) = (AV *)POPs; 790 CvPADLIST (cv) = (PADLIST *)POPs;
513 } 791 }
514 792
515 PUTBACK; 793 PUTBACK;
516 } 794 }
517 795
518 slf_frame = c->slf_frame; 796 slf_frame = c->slf_frame;
797 CORO_THROW = c->except;
798
799 if (ecb_expect_false (enable_times))
800 {
801 if (ecb_expect_false (!times_valid))
802 coro_times_update ();
803
804 coro_times_sub (c);
805 }
806
807 if (ecb_expect_false (c->on_enter))
808 {
809 int i;
810
811 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
812 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
813 }
814
815 if (ecb_expect_false (c->on_enter_xs))
816 {
817 int i;
818
819 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
820 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
821 }
822
823 SWAP_SVS_ENTER (c);
519} 824}
520 825
521static void 826static void
522save_perl (pTHX_ Coro__State c) 827save_perl (pTHX_ Coro__State c)
523{ 828{
829 SWAP_SVS_LEAVE (c);
830
831 if (ecb_expect_false (c->on_leave_xs))
832 {
833 int i;
834
835 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
836 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
837 }
838
839 if (ecb_expect_false (c->on_leave))
840 {
841 int i;
842
843 for (i = AvFILLp (c->on_leave); i >= 0; --i)
844 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
845 }
846
847 times_valid = 0;
848
849 if (ecb_expect_false (enable_times))
850 {
851 coro_times_update (); times_valid = 1;
852 coro_times_add (c);
853 }
854
855 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 856 c->slf_frame = slf_frame;
525 857
526 { 858 {
527 dSP; 859 dSP;
528 I32 cxix = cxstack_ix; 860 I32 cxix = cxstack_ix;
… …
536 868
537 XPUSHs (Nullsv); 869 XPUSHs (Nullsv);
538 /* this loop was inspired by pp_caller */ 870 /* this loop was inspired by pp_caller */
539 for (;;) 871 for (;;)
540 { 872 {
541 while (expect_true (cxix >= 0)) 873 while (ecb_expect_true (cxix >= 0))
542 { 874 {
543 PERL_CONTEXT *cx = &ccstk[cxix--]; 875 PERL_CONTEXT *cx = &ccstk[cxix--];
544 876
545 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 877 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
546 { 878 {
547 CV *cv = cx->blk_sub.cv; 879 CV *cv = cx->blk_sub.cv;
548 880
549 if (expect_true (CvDEPTH (cv))) 881 if (ecb_expect_true (CvDEPTH (cv)))
550 { 882 {
551 EXTEND (SP, 3); 883 EXTEND (SP, 3);
552 PUSHs ((SV *)CvPADLIST (cv)); 884 PUSHs ((SV *)CvPADLIST (cv));
553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 885 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
554 PUSHs ((SV *)cv); 886 PUSHs ((SV *)cv);
… …
557 get_padlist (aTHX_ cv); 889 get_padlist (aTHX_ cv);
558 } 890 }
559 } 891 }
560 } 892 }
561 893
562 if (expect_true (top_si->si_type == PERLSI_MAIN)) 894 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
563 break; 895 break;
564 896
565 top_si = top_si->si_prev; 897 top_si = top_si->si_prev;
566 ccstk = top_si->si_cxstack; 898 ccstk = top_si->si_cxstack;
567 cxix = top_si->si_cxix; 899 cxix = top_si->si_cxix;
… …
569 901
570 PUTBACK; 902 PUTBACK;
571 } 903 }
572 904
573 /* allocate some space on the context stack for our purposes */ 905 /* allocate some space on the context stack for our purposes */
574 /* we manually unroll here, as usually 2 slots is enough */ 906 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
575 if (SLOT_COUNT >= 1) CXINC;
576 if (SLOT_COUNT >= 2) CXINC;
577 if (SLOT_COUNT >= 3) CXINC;
578 { 907 {
579 int i; 908 unsigned int i;
909
580 for (i = 3; i < SLOT_COUNT; ++i) 910 for (i = 0; i < SLOT_COUNT; ++i)
581 CXINC; 911 CXINC;
582 } 912
583 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 913 cxstack_ix -= SLOT_COUNT; /* undo allocation */
914 }
584 915
585 c->mainstack = PL_mainstack; 916 c->mainstack = PL_mainstack;
586 917
587 { 918 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 919 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589 920
590 slot->defav = GvAV (PL_defgv); 921#if CORO_JIT
591 slot->defsv = DEFSV; 922 save_perl_slots (slot);
592 slot->errsv = ERRSV; 923#else
593 slot->irsgv = GvSV (irsgv);
594
595 #define VAR(name,type) slot->name = PL_ ## name; 924 #define VARx(name,expr,type) slot->name = expr;
596 # include "state.h" 925 #include "state.h"
597 #undef VAR 926#endif
598 } 927 }
599} 928}
600 929
601/* 930/*
602 * allocate various perl stacks. This is almost an exact copy 931 * allocate various perl stacks. This is almost an exact copy
603 * of perl.c:init_stacks, except that it uses less memory 932 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 933 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 934 * not usually need a lot of stackspace.
606 */ 935 */
607#if CORO_PREFER_PERL_FUNCTIONS 936#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 937# define coro_init_stacks(thx) init_stacks ()
609#else 938#else
610static void 939static void
611coro_init_stacks (pTHX) 940coro_init_stacks (pTHX)
612{ 941{
613 PL_curstackinfo = new_stackinfo(32, 8); 942 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
614 PL_curstackinfo->si_type = PERLSI_MAIN; 943 PL_curstackinfo->si_type = PERLSI_MAIN;
615 PL_curstack = PL_curstackinfo->si_stack; 944 PL_curstack = PL_curstackinfo->si_stack;
616 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 945 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
617 946
618 PL_stack_base = AvARRAY(PL_curstack); 947 PL_stack_base = AvARRAY(PL_curstack);
… …
633#endif 962#endif
634 963
635 New(54,PL_scopestack,8,I32); 964 New(54,PL_scopestack,8,I32);
636 PL_scopestack_ix = 0; 965 PL_scopestack_ix = 0;
637 PL_scopestack_max = 8; 966 PL_scopestack_max = 8;
967#if HAS_SCOPESTACK_NAME
968 New(54,PL_scopestack_name,8,const char*);
969#endif
638 970
639 New(54,PL_savestack,24,ANY); 971 New(54,PL_savestack,24,ANY);
640 PL_savestack_ix = 0; 972 PL_savestack_ix = 0;
641 PL_savestack_max = 24; 973 PL_savestack_max = 24;
974#if PERL_VERSION_ATLEAST (5,24,0)
975 /* perl 5.24 moves SS_MAXPUSH optimisation from */
976 /* the header macros to PL_savestack_max */
977 PL_savestack_max -= SS_MAXPUSH;
978#endif
642 979
643#if !PERL_VERSION_ATLEAST (5,10,0) 980#if !PERL_VERSION_ATLEAST (5,10,0)
644 New(54,PL_retstack,4,OP*); 981 New(54,PL_retstack,4,OP*);
645 PL_retstack_ix = 0; 982 PL_retstack_ix = 0;
646 PL_retstack_max = 4; 983 PL_retstack_max = 4;
… …
670 } 1007 }
671 1008
672 Safefree (PL_tmps_stack); 1009 Safefree (PL_tmps_stack);
673 Safefree (PL_markstack); 1010 Safefree (PL_markstack);
674 Safefree (PL_scopestack); 1011 Safefree (PL_scopestack);
1012#if HAS_SCOPESTACK_NAME
1013 Safefree (PL_scopestack_name);
1014#endif
675 Safefree (PL_savestack); 1015 Safefree (PL_savestack);
676#if !PERL_VERSION_ATLEAST (5,10,0) 1016#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 1017 Safefree (PL_retstack);
678#endif 1018#endif
679} 1019}
680 1020
1021#define CORO_RSS \
1022 rss += sizeof (SYM (curstackinfo)); \
1023 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
1024 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
1025 rss += SYM (tmps_max) * sizeof (SV *); \
1026 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
1027 rss += SYM (scopestack_max) * sizeof (I32); \
1028 rss += SYM (savestack_max) * sizeof (ANY);
1029
681static size_t 1030static size_t
682coro_rss (pTHX_ struct coro *coro) 1031coro_rss (pTHX_ struct coro *coro)
683{ 1032{
684 size_t rss = sizeof (*coro); 1033 size_t rss = sizeof (*coro);
685 1034
686 if (coro->mainstack) 1035 if (coro->mainstack)
687 { 1036 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 1037 if (coro->flags & CF_RUNNING)
692 { 1038 {
693 slot = &tmp_slot; 1039 #define SYM(sym) PL_ ## sym
694 1040 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 1041 #undef SYM
698 } 1042 }
699 else 1043 else
700 slot = coro->slot;
701
702 if (slot)
703 { 1044 {
704 rss += sizeof (slot->curstackinfo); 1045 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1046 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1047 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 1048 }
716 } 1049 }
717 1050
718 return rss; 1051 return rss;
719} 1052}
720 1053
721/** coroutine stack handling ************************************************/ 1054/** provide custom get/set/clear methods for %SIG elements ******************/
722
723static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
724static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
726 1055
727/* apparently < 5.8.8 */ 1056/* apparently < 5.8.8 */
728#ifndef MgPV_nolen_const 1057#ifndef MgPV_nolen_const
729#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1058#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
730 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1059 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
731 (const char*)(mg)->mg_ptr) 1060 (const char*)(mg)->mg_ptr)
732#endif 1061#endif
733 1062
1063/* this will be a patched copy of PL_vtbl_sigelem */
1064static MGVTBL coro_sigelem_vtbl;
1065
1066static int ecb_cold
1067coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
1068{
1069 char *key = SvPV_nolen ((SV *)name);
1070
1071 /* do what mg_copy normally does */
1072 sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
1073 assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
1074
1075 /* patch sigelem vtbl, but only for __WARN__ and __DIE__ */
1076 if (*key == '_'
1077 && (strEQ (key, "__DIE__")
1078 || strEQ (key, "__WARN__")))
1079 mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
1080
1081 return 1;
1082}
1083
1084/* perl does not have a %SIG vtbl, we provide one so we can override */
1085/* the magic vtbl for the __DIE__ and __WARN__ members */
1086static const MGVTBL coro_sig_vtbl = {
1087 0, 0, 0, 0, 0,
1088 coro_sig_copy
1089};
1090
734/* 1091/*
735 * This overrides the default magic get method of %SIG elements. 1092 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1093 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 1094 * and instead of trying to save and restore the hash elements (extremely slow),
738 * readback here. 1095 * we just provide our own readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */ 1096 */
743static int 1097static int ecb_cold
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1098coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{ 1099{
746 const char *s = MgPV_nolen_const (mg); 1100 const char *s = MgPV_nolen_const (mg);
1101 /* the key must be either __DIE__ or __WARN__ here */
1102 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
747 1103
748 if (*s == '_') 1104 SV *ssv;
749 {
750 SV **svp = 0;
751 1105
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754
755 if (svp) 1106 if (!*svp)
756 { 1107 ssv = &PL_sv_undef;
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1108 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
758 return 0; 1109 ssv = sv_2mortal (newRV_inc (*svp));
759 } 1110 else
760 } 1111 ssv = *svp;
761 1112
762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1113 sv_setsv (sv, ssv);
1114 return 0;
763} 1115}
764 1116
765static int 1117static int ecb_cold
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1118coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{ 1119{
768 const char *s = MgPV_nolen_const (mg); 1120 const char *s = MgPV_nolen_const (mg);
1121 /* the key must be either __DIE__ or __WARN__ here */
1122 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
769 1123
770 if (*s == '_')
771 {
772 SV **svp = 0;
773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 SV *old = *svp; 1124 SV *old = *svp;
780 *svp = 0; 1125 *svp = 0;
781 SvREFCNT_dec (old); 1126 SvREFCNT_dec (old);
782 return 0; 1127 return 0;
783 }
784 }
785
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
787} 1128}
788 1129
789static int 1130static int ecb_cold
790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1131coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
791{ 1132{
792 const char *s = MgPV_nolen_const (mg); 1133 const char *s = MgPV_nolen_const (mg);
1134 /* the key must be either __DIE__ or __WARN__ here */
1135 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
793 1136
794 if (*s == '_')
795 {
796 SV **svp = 0;
797
798 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800
801 if (svp)
802 {
803 SV *old = *svp; 1137 SV *old = *svp;
804 *svp = newSVsv (sv); 1138 *svp = SvOK (sv) ? newSVsv (sv) : 0;
805 SvREFCNT_dec (old); 1139 SvREFCNT_dec (old);
806 return 0; 1140 return 0;
807 }
808 }
809
810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
811} 1141}
812 1142
813static void 1143static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta) 1144prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{ 1145{
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 1151slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 1152{
823 return 0; 1153 return 0;
824} 1154}
825 1155
826static void 1156static int
1157slf_check_repeat (pTHX_ struct CoroSLF *frame)
1158{
1159 return 1;
1160}
1161
1162/** coroutine stack handling ************************************************/
1163
1164static UNOP init_perl_op;
1165
1166ecb_noinline static void /* noinline to keep it out of the transfer fast path */
827coro_setup (pTHX_ struct coro *coro) 1167init_perl (pTHX_ struct coro *coro)
828{ 1168{
829 /* 1169 /*
830 * emulate part of the perl startup here. 1170 * emulate part of the perl startup here.
831 */ 1171 */
832 coro_init_stacks (aTHX); 1172 coro_init_stacks (aTHX);
833 1173
834 PL_runops = RUNOPS_DEFAULT; 1174 PL_runops = RUNOPS_DEFAULT;
835 PL_curcop = &PL_compiling; 1175 PL_curcop = &PL_compiling;
836 PL_in_eval = EVAL_NULL; 1176 PL_in_eval = EVAL_NULL;
837 PL_comppad = 0; 1177 PL_comppad = 0;
1178 PL_comppad_name = 0;
1179 PL_comppad_name_fill = 0;
1180 PL_comppad_name_floor = 0;
838 PL_curpm = 0; 1181 PL_curpm = 0;
839 PL_curpad = 0; 1182 PL_curpad = 0;
840 PL_localizing = 0; 1183 PL_localizing = 0;
841 PL_dirty = 0;
842 PL_restartop = 0; 1184 PL_restartop = 0;
843#if PERL_VERSION_ATLEAST (5,10,0) 1185#if PERL_VERSION_ATLEAST (5,10,0)
844 PL_parser = 0; 1186 PL_parser = 0;
845#endif 1187#endif
1188 PL_hints = 0;
846 1189
847 /* recreate the die/warn hooks */ 1190 /* recreate the die/warn hooks */
848 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1191 PL_diehook = SvREFCNT_inc (rv_diehook);
849 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1192 PL_warnhook = SvREFCNT_inc (rv_warnhook);
850 1193
851 GvSV (PL_defgv) = newSV (0); 1194 GvSV (PL_defgv) = newSV (0);
852 GvAV (PL_defgv) = coro->args; coro->args = 0; 1195 GvAV (PL_defgv) = coro->args; coro->args = 0;
853 GvSV (PL_errgv) = newSV (0); 1196 GvSV (PL_errgv) = newSV (0);
854 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1197 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1198 GvHV (PL_hintgv) = newHV ();
1199#if PERL_VERSION_ATLEAST (5,10,0)
1200 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1201#endif
855 PL_rs = newSVsv (GvSV (irsgv)); 1202 PL_rs = newSVsv (GvSV (irsgv));
856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1203 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
857 1204
858 { 1205 {
859 dSP; 1206 dSP;
860 UNOP myop; 1207 UNOP myop;
861 1208
862 Zero (&myop, 1, UNOP); 1209 Zero (&myop, 1, UNOP);
863 myop.op_next = Nullop; 1210 myop.op_next = Nullop;
1211 myop.op_type = OP_ENTERSUB;
864 myop.op_flags = OPf_WANT_VOID; 1212 myop.op_flags = OPf_WANT_VOID;
865 1213
866 PUSHMARK (SP); 1214 PUSHMARK (SP);
867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1215 PUSHs ((SV *)coro->startcv);
868 PUTBACK; 1216 PUTBACK;
869 PL_op = (OP *)&myop; 1217 PL_op = (OP *)&myop;
870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1218 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871 SPAGAIN;
872 } 1219 }
873 1220
874 /* this newly created coroutine might be run on an existing cctx which most 1221 /* this newly created coroutine might be run on an existing cctx which most
875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1222 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876 */ 1223 */
877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1224 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1225 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
879} 1226 slf_frame.destroy = 0;
880 1227
1228 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1229 init_perl_op.op_next = PL_op;
1230 init_perl_op.op_type = OP_ENTERSUB;
1231 init_perl_op.op_ppaddr = pp_slf;
1232 /* no flags etc. required, as an init function won't be called */
1233
1234 PL_op = (OP *)&init_perl_op;
1235
1236 /* copy throw, in case it was set before init_perl */
1237 CORO_THROW = coro->except;
1238
1239 SWAP_SVS_ENTER (coro);
1240
1241 if (ecb_expect_false (enable_times))
1242 {
1243 coro_times_update ();
1244 coro_times_sub (coro);
1245 }
1246}
1247
881static void 1248static void
882coro_destruct (pTHX_ struct coro *coro) 1249coro_unwind_stacks (pTHX)
883{ 1250{
884 if (!IN_DESTRUCT) 1251 if (!IN_DESTRUCT)
885 { 1252 {
886 /* restore all saved variables and stuff */ 1253 /* restore all saved variables and stuff */
887 LEAVE_SCOPE (0); 1254 LEAVE_SCOPE (0);
… …
895 POPSTACK_TO (PL_mainstack); 1262 POPSTACK_TO (PL_mainstack);
896 1263
897 /* unwind main stack */ 1264 /* unwind main stack */
898 dounwind (-1); 1265 dounwind (-1);
899 } 1266 }
1267}
900 1268
901 SvREFCNT_dec (GvSV (PL_defgv)); 1269static void
902 SvREFCNT_dec (GvAV (PL_defgv)); 1270destroy_perl (pTHX_ struct coro *coro)
903 SvREFCNT_dec (GvSV (PL_errgv)); 1271{
904 SvREFCNT_dec (PL_defoutgv); 1272 SV *svf [9];
905 SvREFCNT_dec (PL_rs);
906 SvREFCNT_dec (GvSV (irsgv));
907 1273
908 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook);
910 1274 {
1275 SV *old_current = SvRV (coro_current);
1276 struct coro *current = SvSTATE (old_current);
1277
1278 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1279
1280 save_perl (aTHX_ current);
1281
1282 /* this will cause transfer_check to croak on block*/
1283 SvRV_set (coro_current, (SV *)coro->hv);
1284
1285 load_perl (aTHX_ coro);
1286
1287 /* restore swapped sv's */
1288 SWAP_SVS_LEAVE (coro);
1289
1290 coro_unwind_stacks (aTHX);
1291
1292 coro_destruct_stacks (aTHX);
1293
1294 /* now save some sv's to be free'd later */
1295 svf [0] = GvSV (PL_defgv);
1296 svf [1] = (SV *)GvAV (PL_defgv);
1297 svf [2] = GvSV (PL_errgv);
1298 svf [3] = (SV *)PL_defoutgv;
1299 svf [4] = PL_rs;
1300 svf [5] = GvSV (irsgv);
1301 svf [6] = (SV *)GvHV (PL_hintgv);
1302 svf [7] = PL_diehook;
1303 svf [8] = PL_warnhook;
1304 assert (9 == sizeof (svf) / sizeof (*svf));
1305
1306 SvRV_set (coro_current, old_current);
1307
1308 load_perl (aTHX_ current);
1309 }
1310
1311 {
1312 unsigned int i;
1313
1314 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1315 SvREFCNT_dec (svf [i]);
1316
911 SvREFCNT_dec (coro->saved_deffh); 1317 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw); 1318 SvREFCNT_dec (coro->rouse_cb);
913 1319 SvREFCNT_dec (coro->invoke_cb);
914 coro_destruct_stacks (aTHX); 1320 SvREFCNT_dec (coro->invoke_av);
1321 SvREFCNT_dec (coro->on_enter_xs);
1322 SvREFCNT_dec (coro->on_leave_xs);
1323 }
915} 1324}
916 1325
917INLINE void 1326ecb_inline void
918free_coro_mortal (pTHX) 1327free_coro_mortal (pTHX)
919{ 1328{
920 if (expect_true (coro_mortal)) 1329 if (ecb_expect_true (coro_mortal))
921 { 1330 {
922 SvREFCNT_dec (coro_mortal); 1331 SvREFCNT_dec ((SV *)coro_mortal);
923 coro_mortal = 0; 1332 coro_mortal = 0;
924 } 1333 }
925} 1334}
926 1335
927static int 1336static int
928runops_trace (pTHX) 1337runops_trace (pTHX)
929{ 1338{
930 COP *oldcop = 0; 1339 COP *oldcop = 0;
931 int oldcxix = -2; 1340 int oldcxix = -2;
932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
933 coro_cctx *cctx = coro->cctx;
934 1341
935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1342 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
936 { 1343 {
937 PERL_ASYNC_CHECK (); 1344 PERL_ASYNC_CHECK ();
938 1345
939 if (cctx->flags & CC_TRACE_ALL) 1346 if (cctx_current->flags & CC_TRACE_ALL)
940 { 1347 {
941 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1348 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
942 { 1349 {
943 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1350 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
944 SV **bot, **top; 1351 SV **bot, **top;
945 AV *av = newAV (); /* return values */ 1352 AV *av = newAV (); /* return values */
946 SV **cb; 1353 SV **cb;
… …
983 1390
984 if (PL_curcop != &PL_compiling) 1391 if (PL_curcop != &PL_compiling)
985 { 1392 {
986 SV **cb; 1393 SV **cb;
987 1394
988 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1395 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
989 { 1396 {
990 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1397 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
991 1398
992 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1399 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
993 { 1400 {
994 runops_proc_t old_runops = PL_runops;
995 dSP; 1401 dSP;
996 GV *gv = CvGV (cx->blk_sub.cv); 1402 GV *gv = CvGV (cx->blk_sub.cv);
997 SV *fullname = sv_2mortal (newSV (0)); 1403 SV *fullname = sv_2mortal (newSV (0));
998 1404
999 if (isGV (gv)) 1405 if (isGV (gv))
… …
1004 SAVETMPS; 1410 SAVETMPS;
1005 EXTEND (SP, 3); 1411 EXTEND (SP, 3);
1006 PUSHMARK (SP); 1412 PUSHMARK (SP);
1007 PUSHs (&PL_sv_yes); 1413 PUSHs (&PL_sv_yes);
1008 PUSHs (fullname); 1414 PUSHs (fullname);
1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1415 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1010 PUTBACK; 1416 PUTBACK;
1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1417 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1418 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013 SPAGAIN; 1419 SPAGAIN;
1014 FREETMPS; 1420 FREETMPS;
… …
1017 } 1423 }
1018 1424
1019 oldcxix = cxstack_ix; 1425 oldcxix = cxstack_ix;
1020 } 1426 }
1021 1427
1022 if (cctx->flags & CC_TRACE_LINE) 1428 if (cctx_current->flags & CC_TRACE_LINE)
1023 { 1429 {
1024 dSP; 1430 dSP;
1025 1431
1026 PL_runops = RUNOPS_DEFAULT; 1432 PL_runops = RUNOPS_DEFAULT;
1027 ENTER; 1433 ENTER;
… …
1046 1452
1047 TAINT_NOT; 1453 TAINT_NOT;
1048 return 0; 1454 return 0;
1049} 1455}
1050 1456
1457static struct CoroSLF cctx_ssl_frame;
1458
1051static void 1459static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1460slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053{ 1461{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0; 1462 ta->prev = 0;
1056} 1463}
1057 1464
1058/* inject a fake call to Coro::State::_cctx_init into the execution */ 1465static int
1059/* _cctx_init should be careful, as it could be called at almost any time */ 1466slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060/* during execution of a perl program */
1061/* also initialises PL_top_env */
1062static void NOINLINE
1063cctx_prepare (pTHX_ coro_cctx *cctx)
1064{ 1467{
1065 dSP; 1468 *frame = cctx_ssl_frame;
1066 UNOP myop;
1067 1469
1470 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1471}
1472
1473/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1474static void ecb_noinline
1475cctx_prepare (pTHX)
1476{
1068 PL_top_env = &PL_start_env; 1477 PL_top_env = &PL_start_env;
1069 1478
1070 if (cctx->flags & CC_TRACE) 1479 if (cctx_current->flags & CC_TRACE)
1071 PL_runops = runops_trace; 1480 PL_runops = runops_trace;
1072 1481
1073 Zero (&myop, 1, UNOP); 1482 /* we already must be executing an SLF op, there is no other valid way
1074 myop.op_next = PL_op; 1483 * that can lead to creation of a new cctx */
1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1484 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1485 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076 1486
1077 PUSHMARK (SP); 1487 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078 EXTEND (SP, 2); 1488 cctx_ssl_frame = slf_frame;
1079 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1489
1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1490 slf_frame.prepare = slf_prepare_set_stacklevel;
1081 PUTBACK; 1491 slf_frame.check = slf_check_set_stacklevel;
1082 PL_op = (OP *)&myop;
1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084 SPAGAIN;
1085} 1492}
1086 1493
1087/* the tail of transfer: execute stuff we can only do after a transfer */ 1494/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void 1495ecb_inline void
1089transfer_tail (pTHX) 1496transfer_tail (pTHX)
1090{ 1497{
1091 free_coro_mortal (aTHX); 1498 free_coro_mortal (aTHX);
1499}
1500
1501/* try to exit the same way perl's main function would do */
1502/* we do not bother resetting the environment or other things *7
1503/* that are not, uhm, essential */
1504/* this obviously also doesn't work when perl is embedded */
1505static void ecb_noinline ecb_cold
1506perlish_exit (pTHX)
1507{
1508 int exitstatus = perl_destruct (PL_curinterp);
1509 perl_free (PL_curinterp);
1510 exit (exitstatus);
1092} 1511}
1093 1512
1094/* 1513/*
1095 * this is a _very_ stripped down perl interpreter ;) 1514 * this is a _very_ stripped down perl interpreter ;)
1096 */ 1515 */
… …
1108 /* normally we would need to skip the entersub here */ 1527 /* normally we would need to skip the entersub here */
1109 /* not doing so will re-execute it, which is exactly what we want */ 1528 /* not doing so will re-execute it, which is exactly what we want */
1110 /* PL_nop = PL_nop->op_next */ 1529 /* PL_nop = PL_nop->op_next */
1111 1530
1112 /* inject a fake subroutine call to cctx_init */ 1531 /* inject a fake subroutine call to cctx_init */
1113 cctx_prepare (aTHX_ (coro_cctx *)arg); 1532 cctx_prepare (aTHX);
1114 1533
1115 /* cctx_run is the alternative tail of transfer() */ 1534 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX); 1535 transfer_tail (aTHX);
1117 1536
1118 /* somebody or something will hit me for both perl_run and PL_restartop */ 1537 /* somebody or something will hit me for both perl_run and PL_restartop */
1119 PL_restartop = PL_op; 1538 PL_restartop = PL_op;
1120 perl_run (PL_curinterp); 1539 perl_run (PL_curinterp);
1540 /*
1541 * Unfortunately, there is no way to get at the return values of the
1542 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1543 * runtime errors here, as this is just a random interpreter, not a thread.
1544 */
1545
1546 /*
1547 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1548 * requires PL_scopestack_ix, so do it here if required.
1549 */
1550 if (!PL_scopestack_ix)
1551 ENTER;
1121 1552
1122 /* 1553 /*
1123 * If perl-run returns we assume exit() was being called or the coro 1554 * If perl-run returns we assume exit() was being called or the coro
1124 * fell off the end, which seems to be the only valid (non-bug) 1555 * fell off the end, which seems to be the only valid (non-bug)
1125 * reason for perl_run to return. We try to exit by jumping to the 1556 * reason for perl_run to return. We try to mimic whatever perl is normally
1126 * bootstrap-time "top" top_env, as we cannot restore the "main" 1557 * doing in that case. YMMV.
1127 * coroutine as Coro has no such concept
1128 */ 1558 */
1129 PL_top_env = main_top_env; 1559 perlish_exit (aTHX);
1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 } 1560 }
1132} 1561}
1133 1562
1134static coro_cctx * 1563static coro_cctx *
1135cctx_new () 1564cctx_new (void)
1136{ 1565{
1137 coro_cctx *cctx; 1566 coro_cctx *cctx;
1138 1567
1139 ++cctx_count; 1568 ++cctx_count;
1140 New (0, cctx, 1, coro_cctx); 1569 New (0, cctx, 1, coro_cctx);
… …
1146 return cctx; 1575 return cctx;
1147} 1576}
1148 1577
1149/* create a new cctx only suitable as source */ 1578/* create a new cctx only suitable as source */
1150static coro_cctx * 1579static coro_cctx *
1151cctx_new_empty () 1580cctx_new_empty (void)
1152{ 1581{
1153 coro_cctx *cctx = cctx_new (); 1582 coro_cctx *cctx = cctx_new ();
1154 1583
1155 cctx->sptr = 0; 1584 cctx->stack.sptr = 0;
1156 coro_create (&cctx->cctx, 0, 0, 0, 0); 1585 coro_create (&cctx->cctx, 0, 0, 0, 0);
1157 1586
1158 return cctx; 1587 return cctx;
1159} 1588}
1160 1589
1161/* create a new cctx suitable as destination/running a perl interpreter */ 1590/* create a new cctx suitable as destination/running a perl interpreter */
1162static coro_cctx * 1591static coro_cctx *
1163cctx_new_run () 1592cctx_new_run (void)
1164{ 1593{
1165 coro_cctx *cctx = cctx_new (); 1594 coro_cctx *cctx = cctx_new ();
1166 void *stack_start;
1167 size_t stack_size;
1168 1595
1169#if HAVE_MMAP 1596 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1170 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1171 /* mmap supposedly does allocate-on-write for us */
1172 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1173
1174 if (cctx->sptr != (void *)-1)
1175 {
1176 #if CORO_STACKGUARD
1177 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1178 #endif
1179 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1180 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1181 cctx->flags |= CC_MAPPED;
1182 } 1597 {
1183 else
1184#endif
1185 {
1186 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1187 New (0, cctx->sptr, cctx_stacksize, long);
1188
1189 if (!cctx->sptr)
1190 {
1191 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1598 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1192 _exit (EXIT_FAILURE); 1599 _exit (EXIT_FAILURE);
1193 }
1194
1195 stack_start = cctx->sptr;
1196 stack_size = cctx->ssize;
1197 } 1600 }
1198 1601
1199 #if CORO_USE_VALGRIND
1200 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1201 #endif
1202
1203 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1602 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1204 1603
1205 return cctx; 1604 return cctx;
1206} 1605}
1207 1606
1208static void 1607static void
1209cctx_destroy (coro_cctx *cctx) 1608cctx_destroy (coro_cctx *cctx)
1210{ 1609{
1211 if (!cctx) 1610 if (!cctx)
1212 return; 1611 return;
1213 1612
1613 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1614
1214 --cctx_count; 1615 --cctx_count;
1215 coro_destroy (&cctx->cctx); 1616 coro_destroy (&cctx->cctx);
1216 1617
1217 /* coro_transfer creates new, empty cctx's */ 1618 coro_stack_free (&cctx->stack);
1218 if (cctx->sptr)
1219 {
1220 #if CORO_USE_VALGRIND
1221 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1222 #endif
1223
1224#if HAVE_MMAP
1225 if (cctx->flags & CC_MAPPED)
1226 munmap (cctx->sptr, cctx->ssize);
1227 else
1228#endif
1229 Safefree (cctx->sptr);
1230 }
1231 1619
1232 Safefree (cctx); 1620 Safefree (cctx);
1233} 1621}
1234 1622
1235/* wether this cctx should be destructed */ 1623/* wether this cctx should be destructed */
1236#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1624#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1237 1625
1238static coro_cctx * 1626static coro_cctx *
1239cctx_get (pTHX) 1627cctx_get (pTHX)
1240{ 1628{
1241 while (expect_true (cctx_first)) 1629 while (ecb_expect_true (cctx_first))
1242 { 1630 {
1243 coro_cctx *cctx = cctx_first; 1631 coro_cctx *cctx = cctx_first;
1244 cctx_first = cctx->next; 1632 cctx_first = cctx->next;
1245 --cctx_idle; 1633 --cctx_idle;
1246 1634
1247 if (expect_true (!CCTX_EXPIRED (cctx))) 1635 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1248 return cctx; 1636 return cctx;
1249 1637
1250 cctx_destroy (cctx); 1638 cctx_destroy (cctx);
1251 } 1639 }
1252 1640
… …
1254} 1642}
1255 1643
1256static void 1644static void
1257cctx_put (coro_cctx *cctx) 1645cctx_put (coro_cctx *cctx)
1258{ 1646{
1259 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1647 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1260 1648
1261 /* free another cctx if overlimit */ 1649 /* free another cctx if overlimit */
1262 if (expect_false (cctx_idle >= cctx_max_idle)) 1650 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1263 { 1651 {
1264 coro_cctx *first = cctx_first; 1652 coro_cctx *first = cctx_first;
1265 cctx_first = first->next; 1653 cctx_first = first->next;
1266 --cctx_idle; 1654 --cctx_idle;
1267 1655
… …
1276/** coroutine switching *****************************************************/ 1664/** coroutine switching *****************************************************/
1277 1665
1278static void 1666static void
1279transfer_check (pTHX_ struct coro *prev, struct coro *next) 1667transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280{ 1668{
1669 /* TODO: throwing up here is considered harmful */
1670
1281 if (expect_true (prev != next)) 1671 if (ecb_expect_true (prev != next))
1282 { 1672 {
1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1673 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1674 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1285 1675
1286 if (expect_false (next->flags & CF_RUNNING)) 1676 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1288
1289 if (expect_false (next->flags & CF_DESTROYED))
1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1677 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1291 1678
1292#if !PERL_VERSION_ATLEAST (5,10,0) 1679#if !PERL_VERSION_ATLEAST (5,10,0)
1293 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1680 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1681 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1295#endif 1682#endif
1296 } 1683 }
1297} 1684}
1298 1685
1299/* always use the TRANSFER macro */ 1686/* always use the TRANSFER macro */
1300static void NOINLINE 1687static void ecb_noinline /* noinline so we have a fixed stackframe */
1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1688transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302{ 1689{
1303 dSTACKLEVEL; 1690 dSTACKLEVEL;
1304 1691
1305 /* sometimes transfer is only called to set idle_sp */ 1692 /* sometimes transfer is only called to set idle_sp */
1306 if (expect_false (!next)) 1693 if (ecb_expect_false (!prev))
1307 { 1694 {
1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1695 cctx_current->idle_sp = STACKLEVEL;
1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1696 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1310 } 1697 }
1311 else if (expect_true (prev != next)) 1698 else if (ecb_expect_true (prev != next))
1312 { 1699 {
1313 coro_cctx *prev__cctx; 1700 coro_cctx *cctx_prev;
1314 1701
1315 if (expect_false (prev->flags & CF_NEW)) 1702 if (ecb_expect_false (prev->flags & CF_NEW))
1316 { 1703 {
1317 /* create a new empty/source context */ 1704 /* create a new empty/source context */
1318 prev->cctx = cctx_new_empty ();
1319 prev->flags &= ~CF_NEW; 1705 prev->flags &= ~CF_NEW;
1320 prev->flags |= CF_RUNNING; 1706 prev->flags |= CF_RUNNING;
1321 } 1707 }
1322 1708
1323 prev->flags &= ~CF_RUNNING; 1709 prev->flags &= ~CF_RUNNING;
1324 next->flags |= CF_RUNNING; 1710 next->flags |= CF_RUNNING;
1325 1711
1326 /* first get rid of the old state */ 1712 /* first get rid of the old state */
1327 save_perl (aTHX_ prev); 1713 save_perl (aTHX_ prev);
1328 1714
1329 if (expect_false (next->flags & CF_NEW)) 1715 if (ecb_expect_false (next->flags & CF_NEW))
1330 { 1716 {
1331 /* need to start coroutine */ 1717 /* need to start coroutine */
1332 next->flags &= ~CF_NEW; 1718 next->flags &= ~CF_NEW;
1333 /* setup coroutine call */ 1719 /* setup coroutine call */
1334 coro_setup (aTHX_ next); 1720 init_perl (aTHX_ next);
1335 } 1721 }
1336 else 1722 else
1337 load_perl (aTHX_ next); 1723 load_perl (aTHX_ next);
1338 1724
1339 prev__cctx = prev->cctx;
1340
1341 /* possibly untie and reuse the cctx */ 1725 /* possibly untie and reuse the cctx */
1342 if (expect_true ( 1726 if (ecb_expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel 1727 cctx_current->idle_sp == STACKLEVEL
1344 && !(prev__cctx->flags & CC_TRACE) 1728 && !(cctx_current->flags & CC_TRACE)
1345 && !force_cctx 1729 && !force_cctx
1346 )) 1730 ))
1347 { 1731 {
1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1732 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1733 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1350 1734
1351 prev->cctx = 0;
1352
1353 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1735 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1736 /* without this the next cctx_get might destroy the running cctx while still in use */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1737 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1356 if (!next->cctx) 1738 if (ecb_expect_true (!next->cctx))
1357 next->cctx = cctx_get (aTHX); 1739 next->cctx = cctx_get (aTHX);
1358 1740
1359 cctx_put (prev__cctx); 1741 cctx_put (cctx_current);
1360 } 1742 }
1743 else
1744 prev->cctx = cctx_current;
1361 1745
1362 ++next->usecount; 1746 ++next->usecount;
1363 1747
1364 if (expect_true (!next->cctx)) 1748 cctx_prev = cctx_current;
1365 next->cctx = cctx_get (aTHX); 1749 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1366 1750
1367 if (expect_false (prev__cctx != next->cctx)) 1751 next->cctx = 0;
1752
1753 if (ecb_expect_false (cctx_prev != cctx_current))
1368 { 1754 {
1369 prev__cctx->top_env = PL_top_env; 1755 cctx_prev->top_env = PL_top_env;
1370 PL_top_env = next->cctx->top_env; 1756 PL_top_env = cctx_current->top_env;
1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1757 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1372 } 1758 }
1373 1759
1374 transfer_tail (aTHX); 1760 transfer_tail (aTHX);
1375 } 1761 }
1376} 1762}
… …
1378#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1764#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1379#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1765#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1380 1766
1381/** high level stuff ********************************************************/ 1767/** high level stuff ********************************************************/
1382 1768
1769/* this function is actually Coro, not Coro::State, but we call it from here */
1770/* because it is convenient - but it hasn't been declared yet for that reason */
1383static int 1771static void
1772coro_call_on_destroy (pTHX_ struct coro *coro);
1773
1774static void
1384coro_state_destroy (pTHX_ struct coro *coro) 1775coro_state_destroy (pTHX_ struct coro *coro)
1385{ 1776{
1386 if (coro->flags & CF_DESTROYED) 1777 if (coro->flags & CF_ZOMBIE)
1387 return 0; 1778 return;
1388 1779
1389 if (coro->on_destroy)
1390 coro->on_destroy (aTHX_ coro); 1780 slf_destroy (aTHX_ coro);
1391 1781
1392 coro->flags |= CF_DESTROYED; 1782 coro->flags |= CF_ZOMBIE;
1393 1783
1394 if (coro->flags & CF_READY) 1784 if (coro->flags & CF_READY)
1395 { 1785 {
1396 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1786 /* reduce nready, as destroying a ready coro effectively unreadies it */
1397 /* alternative: look through all ready queues and remove the coro */ 1787 /* alternative: look through all ready queues and remove the coro */
1398 --coro_nready; 1788 --coro_nready;
1399 } 1789 }
1400 else 1790 else
1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1791 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1402 1792
1403 if (coro->mainstack && coro->mainstack != main_mainstack)
1404 {
1405 struct coro temp;
1406
1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1408
1409 save_perl (aTHX_ &temp);
1410 load_perl (aTHX_ coro);
1411
1412 coro_destruct (aTHX_ coro);
1413
1414 load_perl (aTHX_ &temp);
1415
1416 coro->slot = 0;
1417 }
1418
1419 cctx_destroy (coro->cctx);
1420 SvREFCNT_dec (coro->args);
1421
1422 if (coro->next) coro->next->prev = coro->prev; 1793 if (coro->next) coro->next->prev = coro->prev;
1423 if (coro->prev) coro->prev->next = coro->next; 1794 if (coro->prev) coro->prev->next = coro->next;
1424 if (coro == coro_first) coro_first = coro->next; 1795 if (coro == coro_first) coro_first = coro->next;
1425 1796
1426 return 1; 1797 if (coro->mainstack
1798 && coro->mainstack != main_mainstack
1799 && coro->slot
1800 && !PL_dirty)
1801 destroy_perl (aTHX_ coro);
1802
1803 cctx_destroy (coro->cctx);
1804 SvREFCNT_dec (coro->startcv);
1805 SvREFCNT_dec (coro->args);
1806 SvREFCNT_dec (coro->swap_sv);
1807 SvREFCNT_dec (CORO_THROW);
1808
1809 coro_call_on_destroy (aTHX_ coro);
1810
1811 /* more destruction mayhem in coro_state_free */
1427} 1812}
1428 1813
1429static int 1814static int
1430coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1815coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1431{ 1816{
1432 struct coro *coro = (struct coro *)mg->mg_ptr; 1817 struct coro *coro = (struct coro *)mg->mg_ptr;
1433 mg->mg_ptr = 0; 1818 mg->mg_ptr = 0;
1434 1819
1435 coro->hv = 0;
1436
1437 if (--coro->refcnt < 0)
1438 {
1439 coro_state_destroy (aTHX_ coro); 1820 coro_state_destroy (aTHX_ coro);
1821 SvREFCNT_dec (coro->on_destroy);
1822 SvREFCNT_dec (coro->status);
1823
1440 Safefree (coro); 1824 Safefree (coro);
1441 }
1442 1825
1443 return 0; 1826 return 0;
1444} 1827}
1445 1828
1446static int 1829static int ecb_cold
1447coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1830coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1448{ 1831{
1449 struct coro *coro = (struct coro *)mg->mg_ptr; 1832 /* called when perl clones the current process the slow way (windows process emulation) */
1450 1833 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1451 ++coro->refcnt; 1834 mg->mg_ptr = 0;
1835 mg->mg_virtual = 0;
1452 1836
1453 return 0; 1837 return 0;
1454} 1838}
1455 1839
1456static MGVTBL coro_state_vtbl = { 1840static MGVTBL coro_state_vtbl = {
… …
1481 TRANSFER (ta, 1); 1865 TRANSFER (ta, 1);
1482} 1866}
1483 1867
1484/** Coro ********************************************************************/ 1868/** Coro ********************************************************************/
1485 1869
1486INLINE void 1870ecb_inline void
1487coro_enq (pTHX_ struct coro *coro) 1871coro_enq (pTHX_ struct coro *coro)
1488{ 1872{
1489 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1873 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1490}
1491 1874
1492INLINE SV * 1875 SvREFCNT_inc_NN (coro->hv);
1876
1877 coro->next_ready = 0;
1878 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1879 ready [1] = coro;
1880}
1881
1882ecb_inline struct coro *
1493coro_deq (pTHX) 1883coro_deq (pTHX)
1494{ 1884{
1495 int prio; 1885 int prio;
1496 1886
1497 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1887 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1498 if (AvFILLp (coro_ready [prio]) >= 0) 1888 {
1499 return av_shift (coro_ready [prio]); 1889 struct coro **ready = coro_ready [prio];
1890
1891 if (ready [0])
1892 {
1893 struct coro *coro = ready [0];
1894 ready [0] = coro->next_ready;
1895 return coro;
1896 }
1897 }
1500 1898
1501 return 0; 1899 return 0;
1900}
1901
1902static void
1903invoke_sv_ready_hook_helper (void)
1904{
1905 dTHX;
1906 dSP;
1907
1908 ENTER;
1909 SAVETMPS;
1910
1911 PUSHMARK (SP);
1912 PUTBACK;
1913 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1914
1915 FREETMPS;
1916 LEAVE;
1502} 1917}
1503 1918
1504static int 1919static int
1505api_ready (pTHX_ SV *coro_sv) 1920api_ready (pTHX_ SV *coro_sv)
1506{ 1921{
1507 struct coro *coro;
1508 SV *sv_hook;
1509 void (*xs_hook)(void);
1510
1511 if (SvROK (coro_sv))
1512 coro_sv = SvRV (coro_sv);
1513
1514 coro = SvSTATE (coro_sv); 1922 struct coro *coro = SvSTATE (coro_sv);
1515 1923
1516 if (coro->flags & CF_READY) 1924 if (coro->flags & CF_READY)
1517 return 0; 1925 return 0;
1518 1926
1519 coro->flags |= CF_READY; 1927 coro->flags |= CF_READY;
1520 1928
1521 sv_hook = coro_nready ? 0 : coro_readyhook;
1522 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1523
1524 coro_enq (aTHX_ coro); 1929 coro_enq (aTHX_ coro);
1525 ++coro_nready;
1526 1930
1527 if (sv_hook) 1931 if (!coro_nready++)
1528 { 1932 if (coroapi.readyhook)
1529 dSP; 1933 coroapi.readyhook ();
1530
1531 ENTER;
1532 SAVETMPS;
1533
1534 PUSHMARK (SP);
1535 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD);
1537 SPAGAIN;
1538
1539 FREETMPS;
1540 LEAVE;
1541 }
1542
1543 if (xs_hook)
1544 xs_hook ();
1545 1934
1546 return 1; 1935 return 1;
1547} 1936}
1548 1937
1549static int 1938static int
1550api_is_ready (pTHX_ SV *coro_sv) 1939api_is_ready (pTHX_ SV *coro_sv)
1551{ 1940{
1552 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1941 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553} 1942}
1554 1943
1555INLINE void 1944/* expects to own a reference to next->hv */
1945ecb_inline void
1556prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1946prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1557{ 1947{
1558 SV *prev_sv, *next_sv;
1559
1560 for (;;)
1561 {
1562 next_sv = coro_deq (aTHX);
1563
1564 /* nothing to schedule: call the idle handler */
1565 if (expect_false (!next_sv))
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 continue;
1580 }
1581
1582 ta->next = SvSTATE_hv (next_sv);
1583
1584 /* cannot transfer to destroyed coros, skip and look for next */
1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1586 {
1587 SvREFCNT_dec (next_sv);
1588 /* coro_nready has already been taken care of by destroy */
1589 continue;
1590 }
1591
1592 --coro_nready;
1593 break;
1594 }
1595
1596 /* free this only after the transfer */
1597 prev_sv = SvRV (coro_current); 1948 SV *prev_sv = SvRV (coro_current);
1949
1598 ta->prev = SvSTATE_hv (prev_sv); 1950 ta->prev = SvSTATE_hv (prev_sv);
1951 ta->next = next;
1952
1599 TRANSFER_CHECK (*ta); 1953 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1954
1601 ta->next->flags &= ~CF_READY;
1602 SvRV_set (coro_current, next_sv); 1955 SvRV_set (coro_current, (SV *)next->hv);
1603 1956
1604 free_coro_mortal (aTHX); 1957 free_coro_mortal (aTHX);
1605 coro_mortal = prev_sv; 1958 coro_mortal = prev_sv;
1606} 1959}
1607 1960
1608INLINE void 1961static void
1962prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1963{
1964 for (;;)
1965 {
1966 struct coro *next = coro_deq (aTHX);
1967
1968 if (ecb_expect_true (next))
1969 {
1970 /* cannot transfer to destroyed coros, skip and look for next */
1971 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1972 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1973 else
1974 {
1975 next->flags &= ~CF_READY;
1976 --coro_nready;
1977
1978 prepare_schedule_to (aTHX_ ta, next);
1979 break;
1980 }
1981 }
1982 else
1983 {
1984 /* nothing to schedule: call the idle handler */
1985 if (SvROK (sv_idle)
1986 && SvOBJECT (SvRV (sv_idle)))
1987 {
1988 if (SvRV (sv_idle) == SvRV (coro_current))
1989 {
1990 require_pv ("Carp");
1991
1992 {
1993 dSP;
1994
1995 ENTER;
1996 SAVETMPS;
1997
1998 PUSHMARK (SP);
1999 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2000 PUTBACK;
2001 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2002
2003 FREETMPS;
2004 LEAVE;
2005 }
2006 }
2007
2008 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
2009 api_ready (aTHX_ SvRV (sv_idle));
2010 --coro_nready;
2011 }
2012 else
2013 {
2014 /* TODO: deprecated, remove, cannot work reliably *//*D*/
2015 dSP;
2016
2017 ENTER;
2018 SAVETMPS;
2019
2020 PUSHMARK (SP);
2021 PUTBACK;
2022 call_sv (sv_idle, G_VOID | G_DISCARD);
2023
2024 FREETMPS;
2025 LEAVE;
2026 }
2027 }
2028 }
2029}
2030
2031ecb_inline void
1609prepare_cede (pTHX_ struct coro_transfer_args *ta) 2032prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610{ 2033{
1611 api_ready (aTHX_ coro_current); 2034 api_ready (aTHX_ coro_current);
1612 prepare_schedule (aTHX_ ta); 2035 prepare_schedule (aTHX_ ta);
1613} 2036}
1614 2037
1615INLINE void 2038ecb_inline void
1616prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2039prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1617{ 2040{
1618 SV *prev = SvRV (coro_current); 2041 SV *prev = SvRV (coro_current);
1619 2042
1620 if (coro_nready) 2043 if (coro_nready)
… …
1633 2056
1634 prepare_schedule (aTHX_ &ta); 2057 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1); 2058 TRANSFER (ta, 1);
1636} 2059}
1637 2060
2061static void
2062api_schedule_to (pTHX_ SV *coro_sv)
2063{
2064 struct coro_transfer_args ta;
2065 struct coro *next = SvSTATE (coro_sv);
2066
2067 SvREFCNT_inc_NN (coro_sv);
2068 prepare_schedule_to (aTHX_ &ta, next);
2069}
2070
1638static int 2071static int
1639api_cede (pTHX) 2072api_cede (pTHX)
1640{ 2073{
1641 struct coro_transfer_args ta; 2074 struct coro_transfer_args ta;
1642 2075
1643 prepare_cede (aTHX_ &ta); 2076 prepare_cede (aTHX_ &ta);
1644 2077
1645 if (expect_true (ta.prev != ta.next)) 2078 if (ecb_expect_true (ta.prev != ta.next))
1646 { 2079 {
1647 TRANSFER (ta, 1); 2080 TRANSFER (ta, 1);
1648 return 1; 2081 return 1;
1649 } 2082 }
1650 else 2083 else
… …
1669static void 2102static void
1670api_trace (pTHX_ SV *coro_sv, int flags) 2103api_trace (pTHX_ SV *coro_sv, int flags)
1671{ 2104{
1672 struct coro *coro = SvSTATE (coro_sv); 2105 struct coro *coro = SvSTATE (coro_sv);
1673 2106
2107 if (coro->flags & CF_RUNNING)
2108 croak ("cannot enable tracing on a running coroutine, caught");
2109
1674 if (flags & CC_TRACE) 2110 if (flags & CC_TRACE)
1675 { 2111 {
1676 if (!coro->cctx) 2112 if (!coro->cctx)
1677 coro->cctx = cctx_new_run (); 2113 coro->cctx = cctx_new_run ();
1678 else if (!(coro->cctx->flags & CC_TRACE)) 2114 else if (!(coro->cctx->flags & CC_TRACE))
1679 croak ("cannot enable tracing on coroutine with custom stack,"); 2115 croak ("cannot enable tracing on coroutine with custom stack, caught");
1680 2116
1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2117 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1682 } 2118 }
1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2119 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1684 { 2120 {
… …
1689 else 2125 else
1690 coro->slot->runops = RUNOPS_DEFAULT; 2126 coro->slot->runops = RUNOPS_DEFAULT;
1691 } 2127 }
1692} 2128}
1693 2129
2130static void
2131coro_push_av (pTHX_ AV *av, I32 gimme_v)
2132{
2133 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2134 {
2135 dSP;
2136
2137 if (gimme_v == G_SCALAR)
2138 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2139 else
2140 {
2141 int i;
2142 EXTEND (SP, AvFILLp (av) + 1);
2143
2144 for (i = 0; i <= AvFILLp (av); ++i)
2145 PUSHs (AvARRAY (av)[i]);
2146 }
2147
2148 PUTBACK;
2149 }
2150}
2151
2152static void
2153coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2154{
2155 if (!coro->on_destroy)
2156 coro->on_destroy = newAV ();
2157
2158 av_push (coro->on_destroy, cb);
2159}
2160
2161static void
2162slf_destroy_join (pTHX_ struct CoroSLF *frame)
2163{
2164 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2165}
2166
2167static int
2168slf_check_join (pTHX_ struct CoroSLF *frame)
2169{
2170 struct coro *coro = (struct coro *)frame->data;
2171
2172 if (!coro->status)
2173 return 1;
2174
2175 frame->destroy = 0;
2176
2177 coro_push_av (aTHX_ coro->status, GIMME_V);
2178
2179 SvREFCNT_dec ((SV *)coro->hv);
2180
2181 return 0;
2182}
2183
2184static void
2185slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2186{
2187 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2188
2189 if (items > 1)
2190 croak ("join called with too many arguments");
2191
2192 if (coro->status)
2193 frame->prepare = prepare_nop;
2194 else
2195 {
2196 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2197 frame->prepare = prepare_schedule;
2198 }
2199
2200 frame->check = slf_check_join;
2201 frame->destroy = slf_destroy_join;
2202 frame->data = (void *)coro;
2203 SvREFCNT_inc (coro->hv);
2204}
2205
2206static void
2207coro_call_on_destroy (pTHX_ struct coro *coro)
2208{
2209 AV *od = coro->on_destroy;
2210
2211 if (!od)
2212 return;
2213
2214 coro->on_destroy = 0;
2215 sv_2mortal ((SV *)od);
2216
2217 while (AvFILLp (od) >= 0)
2218 {
2219 SV *cb = sv_2mortal (av_pop (od));
2220
2221 /* coro hv's (and only hv's at the moment) are supported as well */
2222 if (SvSTATEhv_p (aTHX_ cb))
2223 api_ready (aTHX_ cb);
2224 else
2225 {
2226 dSP; /* don't disturb outer sp */
2227 PUSHMARK (SP);
2228
2229 if (coro->status)
2230 {
2231 PUTBACK;
2232 coro_push_av (aTHX_ coro->status, G_ARRAY);
2233 SPAGAIN;
2234 }
2235
2236 PUTBACK;
2237 call_sv (cb, G_VOID | G_DISCARD);
2238 }
2239 }
2240}
2241
2242static void
2243coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2244{
2245 AV *av;
2246
2247 if (coro->status)
2248 {
2249 av = coro->status;
2250 av_clear (av);
2251 }
2252 else
2253 av = coro->status = newAV ();
2254
2255 /* items are actually not so common, so optimise for this case */
2256 if (items)
2257 {
2258 int i;
2259
2260 av_extend (av, items - 1);
2261
2262 for (i = 0; i < items; ++i)
2263 av_push (av, SvREFCNT_inc_NN (arg [i]));
2264 }
2265}
2266
2267static void
2268slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2269{
2270 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2271 api_ready (aTHX_ sv_manager);
2272
2273 frame->prepare = prepare_schedule;
2274 frame->check = slf_check_repeat;
2275
2276 /* as a minor optimisation, we could unwind all stacks here */
2277 /* but that puts extra pressure on pp_slf, and is not worth much */
2278 /*coro_unwind_stacks (aTHX);*/
2279}
2280
2281static void
2282slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2283{
2284 HV *coro_hv = (HV *)SvRV (coro_current);
2285
2286 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2287 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2288}
2289
2290static void
2291slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2292{
2293 HV *coro_hv;
2294 struct coro *coro;
2295
2296 if (items <= 0)
2297 croak ("Coro::cancel called without coro object,");
2298
2299 coro = SvSTATE (arg [0]);
2300 coro_hv = coro->hv;
2301
2302 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2303
2304 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2305 {
2306 /* coro currently busy cancelling something, so just notify it */
2307 coro->slf_frame.data = (void *)coro;
2308
2309 frame->prepare = prepare_nop;
2310 frame->check = slf_check_nop;
2311 }
2312 else if (coro_hv == (HV *)SvRV (coro_current))
2313 {
2314 /* cancelling the current coro is allowed, and equals terminate */
2315 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2316 }
2317 else
2318 {
2319 struct coro *self = SvSTATE_current;
2320
2321 if (!self)
2322 croak ("Coro::cancel called outside of thread content,");
2323
2324 /* otherwise we cancel directly, purely for speed reasons
2325 * unfortunately, this requires some magic trickery, as
2326 * somebody else could cancel us, so we have to fight the cancellation.
2327 * this is ugly, and hopefully fully worth the extra speed.
2328 * besides, I can't get the slow-but-safe version working...
2329 */
2330 slf_frame.data = 0;
2331 self->flags |= CF_NOCANCEL;
2332 coro_state_destroy (aTHX_ coro);
2333 self->flags &= ~CF_NOCANCEL;
2334
2335 if (slf_frame.data)
2336 {
2337 /* while we were busy we have been cancelled, so terminate */
2338 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2339 }
2340 else
2341 {
2342 frame->prepare = prepare_nop;
2343 frame->check = slf_check_nop;
2344 }
2345 }
2346}
2347
2348static int
2349slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2350{
2351 frame->prepare = 0;
2352 coro_unwind_stacks (aTHX);
2353
2354 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2355
2356 return 1;
2357}
2358
2359static int
2360safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2361{
2362 if (coro->cctx)
2363 croak ("coro inside C callback, unable to cancel at this time, caught");
2364
2365 if (coro->flags & CF_NEW)
2366 {
2367 coro_set_status (aTHX_ coro, arg, items);
2368 coro_state_destroy (aTHX_ coro);
2369 }
2370 else
2371 {
2372 if (!coro->slf_frame.prepare)
2373 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2374
2375 slf_destroy (aTHX_ coro);
2376
2377 coro_set_status (aTHX_ coro, arg, items);
2378 coro->slf_frame.prepare = prepare_nop;
2379 coro->slf_frame.check = slf_check_safe_cancel;
2380
2381 api_ready (aTHX_ (SV *)coro->hv);
2382 }
2383
2384 return 1;
2385}
2386
2387/*****************************************************************************/
2388/* async pool handler */
2389
2390static int
2391slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2392{
2393 HV *hv = (HV *)SvRV (coro_current);
2394 struct coro *coro = (struct coro *)frame->data;
2395
2396 if (!coro->invoke_cb)
2397 return 1; /* loop till we have invoke */
2398 else
2399 {
2400 hv_store (hv, "desc", sizeof ("desc") - 1,
2401 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2402
2403 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2404
2405 {
2406 dSP;
2407 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2408 PUTBACK;
2409 }
2410
2411 SvREFCNT_dec (GvAV (PL_defgv));
2412 GvAV (PL_defgv) = coro->invoke_av;
2413 coro->invoke_av = 0;
2414
2415 return 0;
2416 }
2417}
2418
2419static void
2420slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2421{
2422 HV *hv = (HV *)SvRV (coro_current);
2423 struct coro *coro = SvSTATE_hv ((SV *)hv);
2424
2425 if (ecb_expect_true (coro->saved_deffh))
2426 {
2427 /* subsequent iteration */
2428 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2429 coro->saved_deffh = 0;
2430
2431 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2432 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2433 {
2434 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2435 return;
2436 }
2437 else
2438 {
2439 av_clear (GvAV (PL_defgv));
2440 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2441
2442 if (ecb_expect_false (coro->swap_sv))
2443 {
2444 swap_svs_leave (coro);
2445 SvREFCNT_dec_NN (coro->swap_sv);
2446 coro->swap_sv = 0;
2447 }
2448
2449 coro->prio = 0;
2450
2451 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2452 api_trace (aTHX_ coro_current, 0);
2453
2454 frame->prepare = prepare_schedule;
2455 av_push (av_async_pool, SvREFCNT_inc (hv));
2456 }
2457 }
2458 else
2459 {
2460 /* first iteration, simply fall through */
2461 frame->prepare = prepare_nop;
2462 }
2463
2464 frame->check = slf_check_pool_handler;
2465 frame->data = (void *)coro;
2466}
2467
2468/*****************************************************************************/
2469/* rouse callback */
2470
2471#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2472
2473static void
2474coro_rouse_callback (pTHX_ CV *cv)
2475{
2476 dXSARGS;
2477 SV *data = (SV *)S_GENSUB_ARG;
2478
2479 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2480 {
2481 /* first call, set args */
2482 SV *coro = SvRV (data);
2483 AV *av = newAV ();
2484
2485 SvRV_set (data, (SV *)av);
2486
2487 /* better take a full copy of the arguments */
2488 while (items--)
2489 av_store (av, items, newSVsv (ST (items)));
2490
2491 api_ready (aTHX_ coro);
2492 SvREFCNT_dec (coro);
2493 }
2494
2495 XSRETURN_EMPTY;
2496}
2497
2498static int
2499slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2500{
2501 SV *data = (SV *)frame->data;
2502
2503 if (CORO_THROW)
2504 return 0;
2505
2506 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2507 return 1;
2508
2509 /* now push all results on the stack */
2510 {
2511 dSP;
2512 AV *av = (AV *)SvRV (data);
2513 int i;
2514
2515 EXTEND (SP, AvFILLp (av) + 1);
2516 for (i = 0; i <= AvFILLp (av); ++i)
2517 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2518
2519 /* we have stolen the elements, so set length to zero and free */
2520 AvFILLp (av) = -1;
2521 av_undef (av);
2522
2523 PUTBACK;
2524 }
2525
2526 return 0;
2527}
2528
2529static void
2530slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2531{
2532 SV *cb;
2533
2534 if (items)
2535 cb = arg [0];
2536 else
2537 {
2538 struct coro *coro = SvSTATE_current;
2539
2540 if (!coro->rouse_cb)
2541 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2542
2543 cb = sv_2mortal (coro->rouse_cb);
2544 coro->rouse_cb = 0;
2545 }
2546
2547 if (!SvROK (cb)
2548 || SvTYPE (SvRV (cb)) != SVt_PVCV
2549 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2550 croak ("Coro::rouse_wait called with illegal callback argument,");
2551
2552 {
2553 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2554 SV *data = (SV *)S_GENSUB_ARG;
2555
2556 frame->data = (void *)data;
2557 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2558 frame->check = slf_check_rouse_wait;
2559 }
2560}
2561
2562static SV *
2563coro_new_rouse_cb (pTHX)
2564{
2565 HV *hv = (HV *)SvRV (coro_current);
2566 struct coro *coro = SvSTATE_hv (hv);
2567 SV *data = newRV_inc ((SV *)hv);
2568 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2569
2570 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2571 SvREFCNT_dec (data); /* magicext increases the refcount */
2572
2573 SvREFCNT_dec (coro->rouse_cb);
2574 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2575
2576 return cb;
2577}
2578
2579/*****************************************************************************/
2580/* schedule-like-function opcode (SLF) */
2581
2582static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2583static const CV *slf_cv;
2584static SV **slf_argv;
2585static int slf_argc, slf_arga; /* count, allocated */
2586static I32 slf_ax; /* top of stack, for restore */
2587
2588/* this restores the stack in the case we patched the entersub, to */
2589/* recreate the stack frame as perl will on following calls */
2590/* since entersub cleared the stack */
2591static OP *
2592pp_restore (pTHX)
2593{
2594 int i;
2595 SV **SP = PL_stack_base + slf_ax;
2596
2597 PUSHMARK (SP);
2598
2599 EXTEND (SP, slf_argc + 1);
2600
2601 for (i = 0; i < slf_argc; ++i)
2602 PUSHs (sv_2mortal (slf_argv [i]));
2603
2604 PUSHs ((SV *)CvGV (slf_cv));
2605
2606 RETURNOP (slf_restore.op_first);
2607}
2608
2609static void
2610slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2611{
2612 SV **arg = (SV **)slf_frame.data;
2613
2614 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2615}
2616
2617static void
2618slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2619{
2620 if (items != 2)
2621 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2622
2623 frame->prepare = slf_prepare_transfer;
2624 frame->check = slf_check_nop;
2625 frame->data = (void *)arg; /* let's hope it will stay valid */
2626}
2627
2628static void
2629slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2630{
2631 frame->prepare = prepare_schedule;
2632 frame->check = slf_check_nop;
2633}
2634
2635static void
2636slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2637{
2638 struct coro *next = (struct coro *)slf_frame.data;
2639
2640 SvREFCNT_inc_NN (next->hv);
2641 prepare_schedule_to (aTHX_ ta, next);
2642}
2643
2644static void
2645slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2646{
2647 if (!items)
2648 croak ("Coro::schedule_to expects a coroutine argument, caught");
2649
2650 frame->data = (void *)SvSTATE (arg [0]);
2651 frame->prepare = slf_prepare_schedule_to;
2652 frame->check = slf_check_nop;
2653}
2654
2655static void
2656slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2657{
2658 api_ready (aTHX_ SvRV (coro_current));
2659
2660 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2661}
2662
2663static void
2664slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2665{
2666 frame->prepare = prepare_cede;
2667 frame->check = slf_check_nop;
2668}
2669
2670static void
2671slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2672{
2673 frame->prepare = prepare_cede_notself;
2674 frame->check = slf_check_nop;
2675}
2676
2677/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2678static void
2679slf_destroy (pTHX_ struct coro *coro)
2680{
2681 struct CoroSLF frame = coro->slf_frame;
2682
2683 /*
2684 * The on_destroy below most likely is from an SLF call.
2685 * Since by definition the SLF call will not finish when we destroy
2686 * the coro, we will have to force-finish it here, otherwise
2687 * cleanup functions cannot call SLF functions.
2688 */
2689 coro->slf_frame.prepare = 0;
2690
2691 /* this callback is reserved for slf functions needing to do cleanup */
2692 if (frame.destroy && frame.prepare && !PL_dirty)
2693 frame.destroy (aTHX_ &frame);
2694}
2695
2696/*
2697 * these not obviously related functions are all rolled into one
2698 * function to increase chances that they all will call transfer with the same
2699 * stack offset
2700 * SLF stands for "schedule-like-function".
2701 */
2702static OP *
2703pp_slf (pTHX)
2704{
2705 I32 checkmark; /* mark SP to see how many elements check has pushed */
2706
2707 /* set up the slf frame, unless it has already been set-up */
2708 /* the latter happens when a new coro has been started */
2709 /* or when a new cctx was attached to an existing coroutine */
2710 if (ecb_expect_true (!slf_frame.prepare))
2711 {
2712 /* first iteration */
2713 dSP;
2714 SV **arg = PL_stack_base + TOPMARK + 1;
2715 int items = SP - arg; /* args without function object */
2716 SV *gv = *sp;
2717
2718 /* do a quick consistency check on the "function" object, and if it isn't */
2719 /* for us, divert to the real entersub */
2720 if (SvTYPE (gv) != SVt_PVGV
2721 || !GvCV (gv)
2722 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2723 return PL_ppaddr[OP_ENTERSUB](aTHX);
2724
2725 if (!(PL_op->op_flags & OPf_STACKED))
2726 {
2727 /* ampersand-form of call, use @_ instead of stack */
2728 AV *av = GvAV (PL_defgv);
2729 arg = AvARRAY (av);
2730 items = AvFILLp (av) + 1;
2731 }
2732
2733 /* now call the init function, which needs to set up slf_frame */
2734 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2735 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2736
2737 /* pop args */
2738 SP = PL_stack_base + POPMARK;
2739
2740 PUTBACK;
2741 }
2742
2743 /* now that we have a slf_frame, interpret it! */
2744 /* we use a callback system not to make the code needlessly */
2745 /* complicated, but so we can run multiple perl coros from one cctx */
2746
2747 do
2748 {
2749 struct coro_transfer_args ta;
2750
2751 slf_frame.prepare (aTHX_ &ta);
2752 TRANSFER (ta, 0);
2753
2754 checkmark = PL_stack_sp - PL_stack_base;
2755 }
2756 while (slf_frame.check (aTHX_ &slf_frame));
2757
2758 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2759
2760 /* exception handling */
2761 if (ecb_expect_false (CORO_THROW))
2762 {
2763 SV *exception = sv_2mortal (CORO_THROW);
2764
2765 CORO_THROW = 0;
2766 sv_setsv (ERRSV, exception);
2767 croak (0);
2768 }
2769
2770 /* return value handling - mostly like entersub */
2771 /* make sure we put something on the stack in scalar context */
2772 if (GIMME_V == G_SCALAR
2773 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2774 {
2775 dSP;
2776 SV **bot = PL_stack_base + checkmark;
2777
2778 if (sp == bot) /* too few, push undef */
2779 bot [1] = &PL_sv_undef;
2780 else /* too many, take last one */
2781 bot [1] = *sp;
2782
2783 SP = bot + 1;
2784
2785 PUTBACK;
2786 }
2787
2788 return NORMAL;
2789}
2790
2791static void
2792api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2793{
2794 int i;
2795 SV **arg = PL_stack_base + ax;
2796 int items = PL_stack_sp - arg + 1;
2797
2798 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2799
2800 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2801 && PL_op->op_ppaddr != pp_slf)
2802 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2803
2804 CvFLAGS (cv) |= CVf_SLF;
2805 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2806 slf_cv = cv;
2807
2808 /* we patch the op, and then re-run the whole call */
2809 /* we have to put the same argument on the stack for this to work */
2810 /* and this will be done by pp_restore */
2811 slf_restore.op_next = (OP *)&slf_restore;
2812 slf_restore.op_type = OP_CUSTOM;
2813 slf_restore.op_ppaddr = pp_restore;
2814 slf_restore.op_first = PL_op;
2815
2816 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2817
2818 if (PL_op->op_flags & OPf_STACKED)
2819 {
2820 if (items > slf_arga)
2821 {
2822 slf_arga = items;
2823 Safefree (slf_argv);
2824 New (0, slf_argv, slf_arga, SV *);
2825 }
2826
2827 slf_argc = items;
2828
2829 for (i = 0; i < items; ++i)
2830 slf_argv [i] = SvREFCNT_inc (arg [i]);
2831 }
2832 else
2833 slf_argc = 0;
2834
2835 PL_op->op_ppaddr = pp_slf;
2836 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2837
2838 PL_op = (OP *)&slf_restore;
2839}
2840
2841/*****************************************************************************/
2842/* dynamic wind */
2843
2844static void
2845on_enterleave_call (pTHX_ SV *cb)
2846{
2847 dSP;
2848
2849 PUSHSTACK;
2850
2851 PUSHMARK (SP);
2852 PUTBACK;
2853 call_sv (cb, G_VOID | G_DISCARD);
2854 SPAGAIN;
2855
2856 POPSTACK;
2857}
2858
2859static SV *
2860coro_avp_pop_and_free (pTHX_ AV **avp)
2861{
2862 AV *av = *avp;
2863 SV *res = av_pop (av);
2864
2865 if (AvFILLp (av) < 0)
2866 {
2867 *avp = 0;
2868 SvREFCNT_dec (av);
2869 }
2870
2871 return res;
2872}
2873
2874static void
2875coro_pop_on_enter (pTHX_ void *coro)
2876{
2877 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2878 SvREFCNT_dec (cb);
2879}
2880
2881static void
2882coro_pop_on_leave (pTHX_ void *coro)
2883{
2884 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2885 on_enterleave_call (aTHX_ sv_2mortal (cb));
2886}
2887
2888static void
2889enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2890{
2891 if (!hook)
2892 return;
2893
2894 if (!*avp)
2895 {
2896 *avp = newAV ();
2897 AvREAL_off (*avp);
2898 }
2899
2900 av_push (*avp, (SV *)hook);
2901 av_push (*avp, (SV *)arg);
2902}
2903
2904static void
2905enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2906{
2907 AV *av = *avp;
2908 int i;
2909
2910 if (!av)
2911 return;
2912
2913 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2914 if (AvARRAY (av)[i] == (SV *)hook)
2915 {
2916 if (execute)
2917 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2918
2919 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2920 av_pop (av);
2921 av_pop (av);
2922 break;
2923 }
2924
2925 if (AvFILLp (av) >= 0)
2926 {
2927 *avp = 0;
2928 SvREFCNT_dec_NN (av);
2929 }
2930}
2931
2932static void
2933api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2934{
2935 struct coro *coro = SvSTATE (coro_sv);
2936
2937 if (SvSTATE_current == coro)
2938 if (enter)
2939 enter (aTHX_ enter_arg);
2940
2941 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2942 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2943}
2944
2945static void
2946api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2947{
2948 struct coro *coro = SvSTATE (coro_sv);
2949
2950 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2951 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2952}
2953
2954static void
2955savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2956{
2957 struct coro *coro = SvSTATE_current;
2958
2959 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2960}
2961
2962static void
2963savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2964{
2965 struct coro *coro = SvSTATE_current;
2966
2967 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2968}
2969
2970static void
2971api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2972{
2973 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2974
2975 /* this ought to be much cheaper than malloc + a single destructor call */
2976 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2977 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2978}
2979
1694/*****************************************************************************/ 2980/*****************************************************************************/
1695/* PerlIO::cede */ 2981/* PerlIO::cede */
1696 2982
1697typedef struct 2983typedef struct
1698{ 2984{
1699 PerlIOBuf base; 2985 PerlIOBuf base;
1700 NV next, every; 2986 NV next, every;
1701} PerlIOCede; 2987} PerlIOCede;
1702 2988
1703static IV 2989static IV ecb_cold
1704PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2990PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1705{ 2991{
1706 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2992 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1707 2993
1708 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2994 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1709 self->next = nvtime () + self->every; 2995 self->next = nvtime () + self->every;
1710 2996
1711 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2997 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1712} 2998}
1713 2999
1714static SV * 3000static SV * ecb_cold
1715PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3001PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1716{ 3002{
1717 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3003 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1718 3004
1719 return newSVnv (self->every); 3005 return newSVnv (self->every);
… …
1765 PerlIOBuf_get_cnt, 3051 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 3052 PerlIOBuf_set_ptrcnt,
1767}; 3053};
1768 3054
1769/*****************************************************************************/ 3055/*****************************************************************************/
3056/* Coro::Semaphore & Coro::Signal */
1770 3057
1771static const CV *slf_cv; /* for quick consistency check */
1772
1773static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1774static SV *slf_arg0;
1775static SV *slf_arg1;
1776static SV *slf_arg2;
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP * 3058static SV *
1782pp_restore (pTHX) 3059coro_waitarray_new (pTHX_ int count)
1783{ 3060{
1784 dSP; 3061 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3062 AV *av = newAV ();
3063 SV **ary;
1785 3064
1786 PUSHMARK (SP); 3065 /* unfortunately, building manually saves memory */
3066 Newx (ary, 2, SV *);
3067 AvALLOC (av) = ary;
3068#if PERL_VERSION_ATLEAST (5,10,0)
3069 AvARRAY (av) = ary;
3070#else
3071 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3072 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3073 SvPVX ((SV *)av) = (char *)ary;
3074#endif
3075 AvMAX (av) = 1;
3076 AvFILLp (av) = 0;
3077 ary [0] = newSViv (count);
1787 3078
1788 EXTEND (SP, 3); 3079 return newRV_noinc ((SV *)av);
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792 PUSHs ((SV *)CvGV (slf_cv));
1793
1794 RETURNOP (slf_restore.op_first);
1795} 3080}
1796 3081
1797static void 3082/* semaphore */
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 PUTBACK;
1903
1904 /* now call the init function, which needs to set up slf_frame */
1905 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1906 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1907
1908 /* pop args */
1909 SP = PL_stack_base + POPMARK;
1910
1911 PUTBACK;
1912 }
1913
1914 /* now that we have a slf_frame, interpret it! */
1915 /* we use a callback system not to make the code needlessly */
1916 /* complicated, but so we can run multiple perl coros from one cctx */
1917
1918 do
1919 {
1920 struct coro_transfer_args ta;
1921
1922 slf_frame.prepare (aTHX_ &ta);
1923 TRANSFER (ta, 0);
1924
1925 checkmark = PL_stack_sp - PL_stack_base;
1926 }
1927 while (slf_frame.check (aTHX_ &slf_frame));
1928
1929 {
1930 dSP;
1931 SV **bot = PL_stack_base + checkmark;
1932 int gimme = GIMME_V;
1933
1934 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1935
1936 /* make sure we put something on the stack in scalar context */
1937 if (gimme == G_SCALAR)
1938 {
1939 if (sp == bot)
1940 XPUSHs (&PL_sv_undef);
1941
1942 SP = bot + 1;
1943 }
1944
1945 PUTBACK;
1946 }
1947
1948 {
1949 struct coro *coro = SvSTATE_current;
1950
1951 if (expect_false (coro->throw))
1952 {
1953 SV *exception = sv_2mortal (coro->throw);
1954
1955 coro->throw = 0;
1956 sv_setsv (ERRSV, exception);
1957 croak (0);
1958 }
1959 }
1960
1961 return NORMAL;
1962}
1963
1964static void
1965api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1966{
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 if (items > 3)
1974 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1975
1976 CvFLAGS (cv) |= CVf_SLF;
1977 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1978 slf_cv = cv;
1979
1980 /* we patch the op, and then re-run the whole call */
1981 /* we have to put the same argument on the stack for this to work */
1982 /* and this will be done by pp_restore */
1983 slf_restore.op_next = (OP *)&slf_restore;
1984 slf_restore.op_type = OP_CUSTOM;
1985 slf_restore.op_ppaddr = pp_restore;
1986 slf_restore.op_first = PL_op;
1987
1988 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1989 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1990 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1991
1992 PL_op->op_ppaddr = pp_slf;
1993
1994 PL_op = (OP *)&slf_restore;
1995}
1996
1997/*****************************************************************************/
1998 3083
1999static void 3084static void
2000coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 3085coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2001{ 3086{
2002 SV *count_sv = AvARRAY (av)[0]; 3087 SV *count_sv = AvARRAY (av)[0];
… …
2014 AvARRAY (av)[0] = AvARRAY (av)[1]; 3099 AvARRAY (av)[0] = AvARRAY (av)[1];
2015 AvARRAY (av)[1] = count_sv; 3100 AvARRAY (av)[1] = count_sv;
2016 cb = av_shift (av); 3101 cb = av_shift (av);
2017 3102
2018 if (SvOBJECT (cb)) 3103 if (SvOBJECT (cb))
3104 {
2019 api_ready (aTHX_ cb); 3105 api_ready (aTHX_ cb);
2020 else 3106 --count;
2021 croak ("callbacks not yet supported"); 3107 }
3108 else if (SvTYPE (cb) == SVt_PVCV)
3109 {
3110 dSP;
3111 PUSHMARK (SP);
3112 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3113 PUTBACK;
3114 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3115 }
2022 3116
2023 SvREFCNT_dec (cb); 3117 SvREFCNT_dec_NN (cb);
2024
2025 --count;
2026 } 3118 }
2027} 3119}
2028 3120
2029static void 3121static void
2030coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3122coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2031{ 3123{
2032 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3124 /* call $sem->adjust (0) to possibly wake up some other waiters */
2033 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3125 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2034} 3126}
2035 3127
2036static int 3128static int
2037slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3129slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2038{ 3130{
2039 AV *av = (AV *)frame->data; 3131 AV *av = (AV *)frame->data;
2040 SV *count_sv = AvARRAY (av)[0]; 3132 SV *count_sv = AvARRAY (av)[0];
3133 SV *coro_hv = SvRV (coro_current);
2041 3134
3135 frame->destroy = 0;
3136
3137 /* if we are about to throw, don't actually acquire the lock, just throw */
3138 if (ecb_expect_false (CORO_THROW))
3139 {
3140 /* we still might be responsible for the semaphore, so wake up others */
3141 coro_semaphore_adjust (aTHX_ av, 0);
3142
3143 return 0;
3144 }
2042 if (SvIVX (count_sv) > 0) 3145 else if (SvIVX (count_sv) > 0)
2043 { 3146 {
2044 SvSTATE_current->on_destroy = 0; 3147 if (acquire)
2045 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3148 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3149 else
3150 coro_semaphore_adjust (aTHX_ av, 0);
3151
2046 return 0; 3152 return 0;
2047 } 3153 }
2048 else 3154 else
2049 { 3155 {
2050 int i; 3156 int i;
2051 /* if we were woken up but can't down, we look through the whole */ 3157 /* if we were woken up but can't down, we look through the whole */
2052 /* waiters list and only add us if we aren't in there already */ 3158 /* waiters list and only add us if we aren't in there already */
2053 /* this avoids some degenerate memory usage cases */ 3159 /* this avoids some degenerate memory usage cases */
2054 3160 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2055 for (i = 1; i <= AvFILLp (av); ++i)
2056 if (AvARRAY (av)[i] == SvRV (coro_current)) 3161 if (AvARRAY (av)[i] == coro_hv)
2057 return 1; 3162 return 1;
2058 3163
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3164 av_push (av, SvREFCNT_inc (coro_hv));
2060 return 1; 3165 return 1;
2061 } 3166 }
2062} 3167}
2063 3168
2064static void 3169static int
3170slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3171{
3172 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3173}
3174
3175static int
3176slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3177{
3178 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3179}
3180
3181static void
2065slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3182slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2066{ 3183{
2067 AV *av = (AV *)SvRV (arg [0]); 3184 AV *av = (AV *)SvRV (arg [0]);
2068 3185
2069 if (SvIVX (AvARRAY (av)[0]) > 0) 3186 if (SvIVX (AvARRAY (av)[0]) > 0)
2070 { 3187 {
2071 frame->data = (void *)av; 3188 frame->data = (void *)av;
2072 frame->prepare = prepare_nop; 3189 frame->prepare = prepare_nop;
2073 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2074 } 3190 }
2075 else 3191 else
2076 { 3192 {
2077 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3193 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2078 3194
2079 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3195 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2080 frame->prepare = prepare_schedule; 3196 frame->prepare = prepare_schedule;
2081
2082 /* to avoid race conditions when a woken-up coro gets terminated */ 3197 /* to avoid race conditions when a woken-up coro gets terminated */
2083 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3198 /* we arrange for a temporary on_destroy that calls adjust (0) */
2084 assert (!SvSTATE_current->on_destroy);//D
2085 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3199 frame->destroy = coro_semaphore_destroy;
2086 } 3200 }
3201}
2087 3202
3203static void
3204slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3205{
3206 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2088 frame->check = slf_check_semaphore_down; 3207 frame->check = slf_check_semaphore_down;
3208}
2089 3209
3210static void
3211slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3212{
3213 if (items >= 2)
3214 {
3215 /* callback form */
3216 AV *av = (AV *)SvRV (arg [0]);
3217 SV *cb_cv = s_get_cv_croak (arg [1]);
3218
3219 av_push (av, SvREFCNT_inc_NN (cb_cv));
3220
3221 if (SvIVX (AvARRAY (av)[0]) > 0)
3222 coro_semaphore_adjust (aTHX_ av, 0);
3223
3224 frame->prepare = prepare_nop;
3225 frame->check = slf_check_nop;
3226 }
3227 else
3228 {
3229 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3230 frame->check = slf_check_semaphore_wait;
3231 }
3232}
3233
3234/* signal */
3235
3236static void
3237coro_signal_wake (pTHX_ AV *av, int count)
3238{
3239 SvIVX (AvARRAY (av)[0]) = 0;
3240
3241 /* now signal count waiters */
3242 while (count > 0 && AvFILLp (av) > 0)
3243 {
3244 SV *cb;
3245
3246 /* swap first two elements so we can shift a waiter */
3247 cb = AvARRAY (av)[0];
3248 AvARRAY (av)[0] = AvARRAY (av)[1];
3249 AvARRAY (av)[1] = cb;
3250
3251 cb = av_shift (av);
3252
3253 if (SvTYPE (cb) == SVt_PVCV)
3254 {
3255 dSP;
3256 PUSHMARK (SP);
3257 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3258 PUTBACK;
3259 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3260 }
3261 else
3262 {
3263 api_ready (aTHX_ cb);
3264 sv_setiv (cb, 0); /* signal waiter */
3265 }
3266
3267 SvREFCNT_dec_NN (cb);
3268
3269 --count;
3270 }
3271}
3272
3273static int
3274slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3275{
3276 /* if we are about to throw, also stop waiting */
3277 return SvROK ((SV *)frame->data) && !CORO_THROW;
3278}
3279
3280static void
3281slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3282{
3283 AV *av = (AV *)SvRV (arg [0]);
3284
3285 if (items >= 2)
3286 {
3287 SV *cb_cv = s_get_cv_croak (arg [1]);
3288 av_push (av, SvREFCNT_inc_NN (cb_cv));
3289
3290 if (SvIVX (AvARRAY (av)[0]))
3291 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3292
3293 frame->prepare = prepare_nop;
3294 frame->check = slf_check_nop;
3295 }
3296 else if (SvIVX (AvARRAY (av)[0]))
3297 {
3298 SvIVX (AvARRAY (av)[0]) = 0;
3299 frame->prepare = prepare_nop;
3300 frame->check = slf_check_nop;
3301 }
3302 else
3303 {
3304 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3305
3306 av_push (av, waiter);
3307
3308 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3309 frame->prepare = prepare_schedule;
3310 frame->check = slf_check_signal_wait;
3311 }
2090} 3312}
2091 3313
2092/*****************************************************************************/ 3314/*****************************************************************************/
3315/* Coro::AIO */
2093 3316
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3317#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2095 3318
2096/* create a closure from XS, returns a code reference */ 3319/* helper storage struct */
2097/* the arg can be accessed via GENSUB_ARG from the callback */ 3320struct io_state
2098/* the callback must use dXSARGS/XSRETURN */ 3321{
3322 int errorno;
3323 I32 laststype; /* U16 in 5.10.0 */
3324 int laststatval;
3325 Stat_t statcache;
3326};
3327
3328static void
3329coro_aio_callback (pTHX_ CV *cv)
3330{
3331 dXSARGS;
3332 AV *state = (AV *)S_GENSUB_ARG;
3333 SV *coro = av_pop (state);
3334 SV *data_sv = newSV (sizeof (struct io_state));
3335
3336 av_extend (state, items - 1);
3337
3338 sv_upgrade (data_sv, SVt_PV);
3339 SvCUR_set (data_sv, sizeof (struct io_state));
3340 SvPOK_only (data_sv);
3341
3342 {
3343 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3344
3345 data->errorno = errno;
3346 data->laststype = PL_laststype;
3347 data->laststatval = PL_laststatval;
3348 data->statcache = PL_statcache;
3349 }
3350
3351 /* now build the result vector out of all the parameters and the data_sv */
3352 {
3353 int i;
3354
3355 for (i = 0; i < items; ++i)
3356 av_push (state, SvREFCNT_inc_NN (ST (i)));
3357 }
3358
3359 av_push (state, data_sv);
3360
3361 api_ready (aTHX_ coro);
3362 SvREFCNT_dec_NN (coro);
3363 SvREFCNT_dec_NN ((AV *)state);
3364}
3365
3366static int
3367slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3368{
3369 AV *state = (AV *)frame->data;
3370
3371 /* if we are about to throw, return early */
3372 /* this does not cancel the aio request, but at least */
3373 /* it quickly returns */
3374 if (CORO_THROW)
3375 return 0;
3376
3377 /* one element that is an RV? repeat! */
3378 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3379 return 1;
3380
3381 /* restore status */
3382 {
3383 SV *data_sv = av_pop (state);
3384 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3385
3386 errno = data->errorno;
3387 PL_laststype = data->laststype;
3388 PL_laststatval = data->laststatval;
3389 PL_statcache = data->statcache;
3390
3391 SvREFCNT_dec_NN (data_sv);
3392 }
3393
3394 /* push result values */
3395 {
3396 dSP;
3397 int i;
3398
3399 EXTEND (SP, AvFILLp (state) + 1);
3400 for (i = 0; i <= AvFILLp (state); ++i)
3401 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3402
3403 PUTBACK;
3404 }
3405
3406 return 0;
3407}
3408
3409static void
3410slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3411{
3412 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3413 SV *coro_hv = SvRV (coro_current);
3414 struct coro *coro = SvSTATE_hv (coro_hv);
3415
3416 /* put our coroutine id on the state arg */
3417 av_push (state, SvREFCNT_inc_NN (coro_hv));
3418
3419 /* first see whether we have a non-zero priority and set it as AIO prio */
3420 if (coro->prio)
3421 {
3422 dSP;
3423
3424 static SV *prio_cv;
3425 static SV *prio_sv;
3426
3427 if (ecb_expect_false (!prio_cv))
3428 {
3429 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3430 prio_sv = newSViv (0);
3431 }
3432
3433 PUSHMARK (SP);
3434 sv_setiv (prio_sv, coro->prio);
3435 XPUSHs (prio_sv);
3436
3437 PUTBACK;
3438 call_sv (prio_cv, G_VOID | G_DISCARD);
3439 }
3440
3441 /* now call the original request */
3442 {
3443 dSP;
3444 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3445 int i;
3446
3447 PUSHMARK (SP);
3448
3449 /* first push all args to the stack */
3450 EXTEND (SP, items + 1);
3451
3452 for (i = 0; i < items; ++i)
3453 PUSHs (arg [i]);
3454
3455 /* now push the callback closure */
3456 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3457
3458 /* now call the AIO function - we assume our request is uncancelable */
3459 PUTBACK;
3460 call_sv ((SV *)req, G_VOID | G_DISCARD);
3461 }
3462
3463 /* now that the request is going, we loop till we have a result */
3464 frame->data = (void *)state;
3465 frame->prepare = prepare_schedule;
3466 frame->check = slf_check_aio_req;
3467}
3468
3469static void
3470coro_aio_req_xs (pTHX_ CV *cv)
3471{
3472 dXSARGS;
3473
3474 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3475
3476 XSRETURN_EMPTY;
3477}
3478
3479/*****************************************************************************/
3480
3481#if CORO_CLONE
3482# include "clone.c"
3483#endif
3484
3485/*****************************************************************************/
3486
2099static SV * 3487static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3488coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2101{ 3489{
2102 CV *cv = (CV *)NEWSV (0, 0); 3490 SV *coro_sv;
3491 struct coro *coro;
3492 MAGIC *mg;
3493 HV *hv;
3494 SV *cb;
3495 int i;
2103 3496
2104 sv_upgrade ((SV *)cv, SVt_PVCV); 3497 if (argc > 0)
3498 {
3499 cb = s_get_cv_croak (argv [0]);
2105 3500
2106 CvANON_on (cv); 3501 if (!is_coro)
2107 CvISXSUB_on (cv); 3502 {
2108 CvXSUB (cv) = xsub; 3503 if (CvISXSUB (cb))
2109 GENSUB_ARG = arg; 3504 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2110 3505
2111 return newRV_noinc ((SV *)cv); 3506 if (!CvROOT (cb))
2112} 3507 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3508 }
3509 }
2113 3510
2114/*****************************************************************************/ 3511 Newz (0, coro, 1, struct coro);
3512 coro->args = newAV ();
3513 coro->flags = CF_NEW;
3514
3515 if (coro_first) coro_first->prev = coro;
3516 coro->next = coro_first;
3517 coro_first = coro;
3518
3519 coro->hv = hv = newHV ();
3520 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3521 mg->mg_flags |= MGf_DUP;
3522 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3523
3524 if (argc > 0)
3525 {
3526 av_extend (coro->args, argc + is_coro - 1);
3527
3528 if (is_coro)
3529 {
3530 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3531 cb = (SV *)cv_coro_run;
3532 }
3533
3534 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3535
3536 for (i = 1; i < argc; i++)
3537 av_push (coro->args, newSVsv (argv [i]));
3538 }
3539
3540 return coro_sv;
3541}
3542
3543#ifndef __cplusplus
3544ecb_cold XS(boot_Coro__State);
3545#endif
3546
3547#if CORO_JIT
3548
3549static void ecb_noinline ecb_cold
3550pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3551{
3552 dSP;
3553 AV *av = newAV ();
3554
3555 av_store (av, 3, newSVuv (d));
3556 av_store (av, 2, newSVuv (c));
3557 av_store (av, 1, newSVuv (b));
3558 av_store (av, 0, newSVuv (a));
3559
3560 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3561
3562 PUTBACK;
3563}
3564
3565static void ecb_noinline ecb_cold
3566jit_init (pTHX)
3567{
3568 dSP;
3569 SV *load, *save;
3570 char *map_base;
3571 char *load_ptr, *save_ptr;
3572 STRLEN load_len, save_len, map_len;
3573 int count;
3574
3575 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3576
3577 PUSHMARK (SP);
3578 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3579 #include "state.h"
3580 count = call_pv ("Coro::State::_jit", G_ARRAY);
3581 SPAGAIN;
3582
3583 save = POPs; save_ptr = SvPVbyte (save, save_len);
3584 load = POPs; load_ptr = SvPVbyte (load, load_len);
3585
3586 map_len = load_len + save_len + 16;
3587
3588 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3589
3590 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3591
3592 load_perl_slots = (load_save_perl_slots_type)map_base;
3593 memcpy (map_base, load_ptr, load_len);
3594
3595 map_base += (load_len + 15) & ~15;
3596
3597 save_perl_slots = (load_save_perl_slots_type)map_base;
3598 memcpy (map_base, save_ptr, save_len);
3599
3600 /* we are good citizens and try to make the page read-only, so the evil evil */
3601 /* hackers might have it a bit more difficult */
3602 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3603
3604 PUTBACK;
3605 eval_pv ("undef &Coro::State::_jit", 1);
3606}
3607
3608#endif
2115 3609
2116MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3610MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2117 3611
2118PROTOTYPES: DISABLE 3612PROTOTYPES: DISABLE
2119 3613
2120BOOT: 3614BOOT:
2121{ 3615{
3616#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3617#include "state.h"
2122#ifdef USE_ITHREADS 3618#ifdef USE_ITHREADS
2123# if CORO_PTHREAD 3619# if CORO_PTHREAD
2124 coro_thx = PERL_GET_CONTEXT; 3620 coro_thx = PERL_GET_CONTEXT;
2125# endif 3621# endif
2126#endif 3622#endif
2127 BOOT_PAGESIZE; 3623 /* perl defines these to check for existance first, but why it doesn't */
3624 /* just create them one at init time is not clear to me, except for */
3625 /* programs trying to delete them, but... */
3626 /* anyway, we declare this as invalid and make sure they are initialised here */
3627 DEFSV;
3628 ERRSV;
3629
3630 cctx_current = cctx_new_empty ();
2128 3631
2129 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3632 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2130 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3633 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2131 3634
2132 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3635 {
2133 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3636 /*
2134 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3637 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3638 * by coro_sig_vtbl in hash values.
3639 */
3640 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3641
3642 /* this only works if perl doesn't have a vtbl for %SIG */
3643 assert (!mg->mg_virtual);
3644
3645 /*
3646 * The irony is that the perl API itself asserts that mg_virtual
3647 * must be non-const, yet perl5porters insisted on marking their
3648 * vtbls as read-only, just to thwart perl modules from patching
3649 * them.
3650 */
3651 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3652 mg->mg_flags |= MGf_COPY;
3653
3654 coro_sigelem_vtbl = PL_vtbl_sigelem;
3655 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3656 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3657 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3658 }
2135 3659
2136 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2137 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3660 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2138 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3661 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2139 3662
2140 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3663 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
2141 3664
… …
2152 3675
2153 { 3676 {
2154 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3677 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2155 3678
2156 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3679 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2157 hv_store_ent (PL_custom_op_names, slf, 3680 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2158 newSVpv ("coro_slf", 0), 0);
2159 3681
2160 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3682 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2161 hv_store_ent (PL_custom_op_descs, slf, 3683 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2162 newSVpv ("coro schedule like function", 0), 0);
2163 } 3684 }
2164 3685
2165 coroapi.ver = CORO_API_VERSION; 3686 coroapi.ver = CORO_API_VERSION;
2166 coroapi.rev = CORO_API_REVISION; 3687 coroapi.rev = CORO_API_REVISION;
2167 3688
… …
2172 coroapi.prepare_nop = prepare_nop; 3693 coroapi.prepare_nop = prepare_nop;
2173 coroapi.prepare_schedule = prepare_schedule; 3694 coroapi.prepare_schedule = prepare_schedule;
2174 coroapi.prepare_cede = prepare_cede; 3695 coroapi.prepare_cede = prepare_cede;
2175 coroapi.prepare_cede_notself = prepare_cede_notself; 3696 coroapi.prepare_cede_notself = prepare_cede_notself;
2176 3697
2177 { 3698 time_init (aTHX);
2178 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2179 3699
2180 if (!svp) croak ("Time::HiRes is required");
2181 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2182
2183 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2184 }
2185
2186 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3700 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3701#if CORO_JIT
3702 PUTBACK;
3703 jit_init (aTHX);
3704 SPAGAIN;
3705#endif
2187} 3706}
2188 3707
2189SV * 3708SV *
2190new (char *klass, ...) 3709new (SV *klass, ...)
3710 ALIAS:
3711 Coro::new = 1
2191 CODE: 3712 CODE:
2192{ 3713 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2193 struct coro *coro; 3714 OUTPUT:
2194 MAGIC *mg;
2195 HV *hv;
2196 int i;
2197
2198 Newz (0, coro, 1, struct coro);
2199 coro->args = newAV ();
2200 coro->flags = CF_NEW;
2201
2202 if (coro_first) coro_first->prev = coro;
2203 coro->next = coro_first;
2204 coro_first = coro;
2205
2206 coro->hv = hv = newHV ();
2207 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2208 mg->mg_flags |= MGf_DUP;
2209 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2210
2211 av_extend (coro->args, items - 1);
2212 for (i = 1; i < items; i++)
2213 av_push (coro->args, newSVsv (ST (i)));
2214}
2215 OUTPUT:
2216 RETVAL 3715 RETVAL
2217
2218void
2219_set_stacklevel (...)
2220 CODE:
2221 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2222 3716
2223void 3717void
2224transfer (...) 3718transfer (...)
2225 PROTOTYPE: $$ 3719 PROTOTYPE: $$
2226 CODE: 3720 CODE:
2227 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3721 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2228 3722
2229bool 3723SV *
2230_destroy (SV *coro_sv) 3724clone (Coro::State coro)
2231 CODE: 3725 CODE:
2232 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3726{
3727#if CORO_CLONE
3728 struct coro *ncoro = coro_clone (aTHX_ coro);
3729 MAGIC *mg;
3730 /* TODO: too much duplication */
3731 ncoro->hv = newHV ();
3732 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3733 mg->mg_flags |= MGf_DUP;
3734 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3735#else
3736 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3737#endif
3738}
2233 OUTPUT: 3739 OUTPUT:
2234 RETVAL 3740 RETVAL
2235
2236void
2237_exit (int code)
2238 PROTOTYPE: $
2239 CODE:
2240 _exit (code);
2241 3741
2242int 3742int
2243cctx_stacksize (int new_stacksize = 0) 3743cctx_stacksize (int new_stacksize = 0)
2244 PROTOTYPE: ;$ 3744 PROTOTYPE: ;$
2245 CODE: 3745 CODE:
… …
2281void 3781void
2282list () 3782list ()
2283 PROTOTYPE: 3783 PROTOTYPE:
2284 PPCODE: 3784 PPCODE:
2285{ 3785{
2286 struct coro *coro; 3786 struct coro *coro;
2287 for (coro = coro_first; coro; coro = coro->next) 3787 for (coro = coro_first; coro; coro = coro->next)
2288 if (coro->hv) 3788 if (coro->hv)
2289 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3789 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2290} 3790}
2291 3791
… …
2295 eval = 1 3795 eval = 1
2296 CODE: 3796 CODE:
2297{ 3797{
2298 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3798 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2299 { 3799 {
2300 struct coro temp; 3800 struct coro *current = SvSTATE_current;
3801 struct CoroSLF slf_save;
2301 3802
2302 if (!(coro->flags & CF_RUNNING)) 3803 if (current != coro)
2303 { 3804 {
2304 PUTBACK; 3805 PUTBACK;
2305 save_perl (aTHX_ &temp); 3806 save_perl (aTHX_ current);
2306 load_perl (aTHX_ coro); 3807 load_perl (aTHX_ coro);
3808 /* the coro is most likely in an active SLF call.
3809 * while not strictly required (the code we execute is
3810 * not allowed to call any SLF functions), it's cleaner
3811 * to reinitialise the slf_frame and restore it later.
3812 * This might one day allow us to actually do SLF calls
3813 * from code executed here.
3814 */
3815 slf_save = slf_frame;
3816 slf_frame.prepare = 0;
3817 SPAGAIN;
2307 } 3818 }
2308 3819
2309 {
2310 dSP;
2311 ENTER;
2312 SAVETMPS;
2313 PUTBACK;
2314 PUSHSTACK; 3820 PUSHSTACK;
3821
2315 PUSHMARK (SP); 3822 PUSHMARK (SP);
3823 PUTBACK;
2316 3824
2317 if (ix) 3825 if (ix)
2318 eval_sv (coderef, 0); 3826 eval_sv (coderef, 0);
2319 else 3827 else
2320 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3828 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2321 3829
2322 POPSTACK; 3830 POPSTACK;
2323 SPAGAIN; 3831 SPAGAIN;
2324 FREETMPS;
2325 LEAVE;
2326 PUTBACK;
2327 }
2328 3832
2329 if (!(coro->flags & CF_RUNNING)) 3833 if (current != coro)
2330 { 3834 {
3835 PUTBACK;
3836 slf_frame = slf_save;
2331 save_perl (aTHX_ coro); 3837 save_perl (aTHX_ coro);
2332 load_perl (aTHX_ &temp); 3838 load_perl (aTHX_ current);
2333 SPAGAIN; 3839 SPAGAIN;
2334 } 3840 }
2335 } 3841 }
2336} 3842}
2337 3843
… …
2340 PROTOTYPE: $ 3846 PROTOTYPE: $
2341 ALIAS: 3847 ALIAS:
2342 is_ready = CF_READY 3848 is_ready = CF_READY
2343 is_running = CF_RUNNING 3849 is_running = CF_RUNNING
2344 is_new = CF_NEW 3850 is_new = CF_NEW
2345 is_destroyed = CF_DESTROYED 3851 is_destroyed = CF_ZOMBIE
3852 is_zombie = CF_ZOMBIE
3853 is_suspended = CF_SUSPENDED
2346 CODE: 3854 CODE:
2347 RETVAL = boolSV (coro->flags & ix); 3855 RETVAL = boolSV (coro->flags & ix);
2348 OUTPUT: 3856 OUTPUT:
2349 RETVAL 3857 RETVAL
2350 3858
2351void 3859void
2352throw (Coro::State self, SV *throw = &PL_sv_undef) 3860throw (SV *self, SV *exception = &PL_sv_undef)
2353 PROTOTYPE: $;$ 3861 PROTOTYPE: $;$
2354 CODE: 3862 CODE:
3863{
3864 struct coro *coro = SvSTATE (self);
3865 struct coro *current = SvSTATE_current;
3866 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2355 SvREFCNT_dec (self->throw); 3867 SvREFCNT_dec (*exceptionp);
2356 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3868 SvGETMAGIC (exception);
3869 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3870
3871 api_ready (aTHX_ self);
3872}
2357 3873
2358void 3874void
2359api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3875api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2360 PROTOTYPE: $;$ 3876 PROTOTYPE: $;$
2361 C_ARGS: aTHX_ coro, flags 3877 C_ARGS: aTHX_ coro, flags
2362 3878
2363SV * 3879SV *
2364has_cctx (Coro::State coro) 3880has_cctx (Coro::State coro)
2365 PROTOTYPE: $ 3881 PROTOTYPE: $
2366 CODE: 3882 CODE:
2367 RETVAL = boolSV (!!coro->cctx); 3883 /* maybe manage the running flag differently */
3884 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2368 OUTPUT: 3885 OUTPUT:
2369 RETVAL 3886 RETVAL
2370 3887
2371int 3888int
2372is_traced (Coro::State coro) 3889is_traced (Coro::State coro)
… …
2392 3909
2393void 3910void
2394force_cctx () 3911force_cctx ()
2395 PROTOTYPE: 3912 PROTOTYPE:
2396 CODE: 3913 CODE:
2397 SvSTATE_current->cctx->idle_sp = 0; 3914 cctx_current->idle_sp = 0;
2398 3915
2399void 3916void
2400swap_defsv (Coro::State self) 3917swap_defsv (Coro::State self)
2401 PROTOTYPE: $ 3918 PROTOTYPE: $
2402 ALIAS: 3919 ALIAS:
… …
2410 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3927 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2411 3928
2412 SV *tmp = *src; *src = *dst; *dst = tmp; 3929 SV *tmp = *src; *src = *dst; *dst = tmp;
2413 } 3930 }
2414 3931
3932void
3933cancel (Coro::State self)
3934 CODE:
3935 coro_state_destroy (aTHX_ self);
3936
3937SV *
3938enable_times (int enabled = enable_times)
3939 CODE:
3940{
3941 RETVAL = boolSV (enable_times);
3942
3943 if (enabled != enable_times)
3944 {
3945 enable_times = enabled;
3946
3947 coro_times_update ();
3948 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3949 }
3950}
3951 OUTPUT:
3952 RETVAL
3953
3954void
3955times (Coro::State self)
3956 PPCODE:
3957{
3958 struct coro *current = SvSTATE (coro_current);
3959
3960 if (ecb_expect_false (current == self))
3961 {
3962 coro_times_update ();
3963 coro_times_add (SvSTATE (coro_current));
3964 }
3965
3966 EXTEND (SP, 2);
3967 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3968 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3969
3970 if (ecb_expect_false (current == self))
3971 coro_times_sub (SvSTATE (coro_current));
3972}
3973
3974void
3975swap_sv (Coro::State coro, SV *sva, SV *svb)
3976 CODE:
3977{
3978 struct coro *current = SvSTATE_current;
3979 AV *swap_sv;
3980 int i;
3981
3982 sva = SvRV (sva);
3983 svb = SvRV (svb);
3984
3985 if (current == coro)
3986 SWAP_SVS_LEAVE (current);
3987
3988 if (!coro->swap_sv)
3989 coro->swap_sv = newAV ();
3990
3991 swap_sv = coro->swap_sv;
3992
3993 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
3994 {
3995 SV *a = AvARRAY (swap_sv)[i ];
3996 SV *b = AvARRAY (swap_sv)[i + 1];
3997
3998 if (a == sva && b == svb)
3999 {
4000 SvREFCNT_dec_NN (a);
4001 SvREFCNT_dec_NN (b);
4002
4003 for (; i <= AvFILLp (swap_sv) - 2; i++)
4004 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4005
4006 AvFILLp (swap_sv) -= 2;
4007
4008 goto removed;
4009 }
4010 }
4011
4012 av_push (swap_sv, SvREFCNT_inc_NN (sva));
4013 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4014
4015 removed:
4016
4017 if (current == coro)
4018 SWAP_SVS_ENTER (current);
4019}
4020
4021
2415MODULE = Coro::State PACKAGE = Coro 4022MODULE = Coro::State PACKAGE = Coro
2416 4023
2417BOOT: 4024BOOT:
2418{ 4025{
2419 int i; 4026 if (SVt_LAST > 32)
4027 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2420 4028
2421 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2422 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4029 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2423 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4030 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2424 4031 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2425 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 4032 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2426 SvREADONLY_on (coro_current); 4033 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
4034 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
4035 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
4036 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
4037
4038 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
4039 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
4040 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
4041 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2427 4042
2428 coro_stash = gv_stashpv ("Coro", TRUE); 4043 coro_stash = gv_stashpv ("Coro", TRUE);
2429 4044
2430 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4045 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2431 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4046 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2432 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4047 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2433 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4048 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2434 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4049 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2435 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4050 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2436
2437 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2438 coro_ready[i] = newAV ();
2439 4051
2440 { 4052 {
2441 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4053 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2442 4054
2443 coroapi.schedule = api_schedule; 4055 coroapi.schedule = api_schedule;
4056 coroapi.schedule_to = api_schedule_to;
2444 coroapi.cede = api_cede; 4057 coroapi.cede = api_cede;
2445 coroapi.cede_notself = api_cede_notself; 4058 coroapi.cede_notself = api_cede_notself;
2446 coroapi.ready = api_ready; 4059 coroapi.ready = api_ready;
2447 coroapi.is_ready = api_is_ready; 4060 coroapi.is_ready = api_is_ready;
2448 coroapi.nready = coro_nready; 4061 coroapi.nready = coro_nready;
2449 coroapi.current = coro_current; 4062 coroapi.current = coro_current;
2450 4063
4064 coroapi.enterleave_hook = api_enterleave_hook;
4065 coroapi.enterleave_unhook = api_enterleave_unhook;
4066 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4067
2451 GCoroAPI = &coroapi; 4068 /*GCoroAPI = &coroapi;*/
2452 sv_setiv (sv, (IV)&coroapi); 4069 sv_setiv (sv, (IV)&coroapi);
2453 SvREADONLY_on (sv); 4070 SvREADONLY_on (sv);
2454 } 4071 }
2455} 4072}
2456 4073
4074SV *
4075async (...)
4076 PROTOTYPE: &@
4077 CODE:
4078 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4079 api_ready (aTHX_ RETVAL);
4080 OUTPUT:
4081 RETVAL
4082
4083void
4084_destroy (Coro::State coro)
4085 CODE:
4086 /* used by the manager thread */
4087 coro_state_destroy (aTHX_ coro);
4088
4089void
4090on_destroy (Coro::State coro, SV *cb)
4091 CODE:
4092 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4093
4094void
4095join (...)
4096 CODE:
4097 CORO_EXECUTE_SLF_XS (slf_init_join);
4098
4099void
4100terminate (...)
4101 CODE:
4102 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4103
4104void
4105cancel (...)
4106 CODE:
4107 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4108
4109int
4110safe_cancel (Coro::State self, ...)
4111 C_ARGS: aTHX_ self, &ST (1), items - 1
4112
2457void 4113void
2458schedule (...) 4114schedule (...)
2459 CODE: 4115 CODE:
2460 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 4116 CORO_EXECUTE_SLF_XS (slf_init_schedule);
4117
4118void
4119schedule_to (...)
4120 CODE:
4121 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4122
4123void
4124cede_to (...)
4125 CODE:
4126 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2461 4127
2462void 4128void
2463cede (...) 4129cede (...)
2464 CODE: 4130 CODE:
2465 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 4131 CORO_EXECUTE_SLF_XS (slf_init_cede);
2466 4132
2467void 4133void
2468cede_notself (...) 4134cede_notself (...)
2469 CODE: 4135 CODE:
2470 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 4136 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2471 4137
2472void 4138void
2473_set_current (SV *current) 4139_set_current (SV *current)
2474 PROTOTYPE: $ 4140 PROTOTYPE: $
2475 CODE: 4141 CODE:
2476 SvREFCNT_dec (SvRV (coro_current)); 4142 SvREFCNT_dec_NN (SvRV (coro_current));
2477 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4143 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2478 4144
2479void 4145void
2480_set_readyhook (SV *hook) 4146_set_readyhook (SV *hook)
2481 PROTOTYPE: $ 4147 PROTOTYPE: $
2482 CODE: 4148 CODE:
2483 SvREFCNT_dec (coro_readyhook); 4149 SvREFCNT_dec (coro_readyhook);
4150 SvGETMAGIC (hook);
4151 if (SvOK (hook))
4152 {
2484 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4153 coro_readyhook = newSVsv (hook);
4154 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4155 }
4156 else
4157 {
4158 coro_readyhook = 0;
4159 CORO_READYHOOK = 0;
4160 }
2485 4161
2486int 4162int
2487prio (Coro::State coro, int newprio = 0) 4163prio (Coro::State coro, int newprio = 0)
2488 PROTOTYPE: $;$ 4164 PROTOTYPE: $;$
2489 ALIAS: 4165 ALIAS:
… …
2495 if (items > 1) 4171 if (items > 1)
2496 { 4172 {
2497 if (ix) 4173 if (ix)
2498 newprio = coro->prio - newprio; 4174 newprio = coro->prio - newprio;
2499 4175
2500 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4176 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2501 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4177 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2502 4178
2503 coro->prio = newprio; 4179 coro->prio = newprio;
2504 } 4180 }
2505} 4181}
2506 OUTPUT: 4182 OUTPUT:
… …
2520 CODE: 4196 CODE:
2521 RETVAL = coro_nready; 4197 RETVAL = coro_nready;
2522 OUTPUT: 4198 OUTPUT:
2523 RETVAL 4199 RETVAL
2524 4200
2525# for async_pool speedup
2526void 4201void
2527_pool_1 (SV *cb) 4202suspend (Coro::State self)
4203 PROTOTYPE: $
2528 CODE: 4204 CODE:
2529{ 4205 self->flags |= CF_SUSPENDED;
2530 HV *hv = (HV *)SvRV (coro_current);
2531 struct coro *coro = SvSTATE_hv ((SV *)hv);
2532 AV *defav = GvAV (PL_defgv);
2533 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2534 AV *invoke_av;
2535 int i, len;
2536 4206
2537 if (!invoke) 4207void
4208resume (Coro::State self)
4209 PROTOTYPE: $
4210 CODE:
4211 self->flags &= ~CF_SUSPENDED;
4212
4213void
4214_pool_handler (...)
4215 CODE:
4216 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4217
4218void
4219async_pool (SV *cv, ...)
4220 PROTOTYPE: &@
4221 PPCODE:
4222{
4223 HV *hv = (HV *)av_pop (av_async_pool);
4224 AV *av = newAV ();
4225 SV *cb = ST (0);
4226 int i;
4227
4228 av_extend (av, items - 2);
4229 for (i = 1; i < items; ++i)
4230 av_push (av, SvREFCNT_inc_NN (ST (i)));
4231
4232 if ((SV *)hv == &PL_sv_undef)
2538 { 4233 {
2539 SV *old = PL_diehook; 4234 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2540 PL_diehook = 0; 4235 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2541 SvREFCNT_dec (old); 4236 SvREFCNT_dec_NN (sv);
2542 croak ("\3async_pool terminate\2\n");
2543 } 4237 }
2544 4238
2545 SvREFCNT_dec (coro->saved_deffh);
2546 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2547
2548 hv_store (hv, "desc", sizeof ("desc") - 1,
2549 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2550
2551 invoke_av = (AV *)SvRV (invoke);
2552 len = av_len (invoke_av);
2553
2554 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2555
2556 if (len > 0)
2557 { 4239 {
2558 av_fill (defav, len - 1); 4240 struct coro *coro = SvSTATE_hv (hv);
2559 for (i = 0; i < len; ++i) 4241
2560 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4242 assert (!coro->invoke_cb);
4243 assert (!coro->invoke_av);
4244 coro->invoke_cb = SvREFCNT_inc (cb);
4245 coro->invoke_av = av;
2561 } 4246 }
4247
4248 api_ready (aTHX_ (SV *)hv);
4249
4250 if (GIMME_V != G_VOID)
4251 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4252 else
4253 SvREFCNT_dec_NN (hv);
2562} 4254}
4255
4256SV *
4257rouse_cb ()
4258 PROTOTYPE:
4259 CODE:
4260 RETVAL = coro_new_rouse_cb (aTHX);
4261 OUTPUT:
4262 RETVAL
2563 4263
2564void 4264void
2565_pool_2 (SV *cb) 4265rouse_wait (...)
4266 PROTOTYPE: ;$
4267 PPCODE:
4268 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4269
4270void
4271on_enter (SV *block)
4272 ALIAS:
4273 on_leave = 1
4274 PROTOTYPE: &
2566 CODE: 4275 CODE:
2567{ 4276{
2568 struct coro *coro = SvSTATE_current; 4277 struct coro *coro = SvSTATE_current;
4278 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2569 4279
2570 sv_setsv (cb, &PL_sv_undef); 4280 block = s_get_cv_croak (block);
2571 4281
2572 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4282 if (!*avp)
2573 coro->saved_deffh = 0;
2574
2575 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2576 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2577 {
2578 SV *old = PL_diehook;
2579 PL_diehook = 0;
2580 SvREFCNT_dec (old);
2581 croak ("\3async_pool terminate\2\n");
2582 }
2583
2584 av_clear (GvAV (PL_defgv));
2585 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2586 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2587
2588 coro->prio = 0;
2589
2590 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2591 api_trace (aTHX_ coro_current, 0);
2592
2593 av_push (av_async_pool, newSVsv (coro_current));
2594}
2595
2596
2597MODULE = Coro::State PACKAGE = Coro::AIO
2598
2599void
2600_get_state (SV *self)
2601 PROTOTYPE: $
2602 PPCODE:
2603{
2604 AV *defav = GvAV (PL_defgv);
2605 AV *av = newAV (); 4283 *avp = newAV ();
2606 int i;
2607 SV *data_sv = newSV (sizeof (struct io_state));
2608 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2609 SvCUR_set (data_sv, sizeof (struct io_state));
2610 SvPOK_only (data_sv);
2611 4284
2612 data->errorno = errno; 4285 av_push (*avp, SvREFCNT_inc (block));
2613 data->laststype = PL_laststype;
2614 data->laststatval = PL_laststatval;
2615 data->statcache = PL_statcache;
2616 4286
2617 av_extend (av, AvFILLp (defav) + 1 + 1); 4287 if (!ix)
4288 on_enterleave_call (aTHX_ block);
2618 4289
2619 for (i = 0; i <= AvFILLp (defav); ++i) 4290 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2620 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4291 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2621 4292 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2622 av_push (av, data_sv);
2623
2624 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2625
2626 api_ready (aTHX_ self);
2627}
2628
2629void
2630_set_state (SV *state)
2631 PROTOTYPE: $
2632 PPCODE:
2633{
2634 AV *av = (AV *)SvRV (state);
2635 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2636 int i;
2637
2638 errno = data->errorno;
2639 PL_laststype = data->laststype;
2640 PL_laststatval = data->laststatval;
2641 PL_statcache = data->statcache;
2642
2643 EXTEND (SP, AvFILLp (av));
2644 for (i = 0; i < AvFILLp (av); ++i)
2645 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2646}
2647
2648
2649MODULE = Coro::State PACKAGE = Coro::AnyEvent
2650
2651BOOT:
2652 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2653
2654void
2655_schedule (...)
2656 CODE:
2657{
2658 static int incede;
2659
2660 api_cede_notself (aTHX);
2661
2662 ++incede;
2663 while (coro_nready >= incede && api_cede (aTHX))
2664 ;
2665
2666 sv_setsv (sv_activity, &PL_sv_undef);
2667 if (coro_nready >= incede)
2668 {
2669 PUSHMARK (SP);
2670 PUTBACK;
2671 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2672 SPAGAIN;
2673 }
2674
2675 --incede;
2676} 4293}
2677 4294
2678 4295
2679MODULE = Coro::State PACKAGE = PerlIO::cede 4296MODULE = Coro::State PACKAGE = PerlIO::cede
2680 4297
2681BOOT: 4298BOOT:
2682 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4299 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2683 4300
4301
2684MODULE = Coro::State PACKAGE = Coro::Semaphore 4302MODULE = Coro::State PACKAGE = Coro::Semaphore
2685 4303
2686SV * 4304SV *
2687new (SV *klass, SV *count_ = 0) 4305new (SV *klass, SV *count = 0)
2688 CODE: 4306 CODE:
2689{ 4307{
2690 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4308 int semcnt = 1;
2691 AV *av = newAV (); 4309
2692 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4310 if (count)
2693 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4311 {
4312 SvGETMAGIC (count);
4313
4314 if (SvOK (count))
4315 semcnt = SvIV (count);
4316 }
4317
4318 RETVAL = sv_bless (
4319 coro_waitarray_new (aTHX_ semcnt),
4320 GvSTASH (CvGV (cv))
4321 );
2694} 4322}
4323 OUTPUT:
4324 RETVAL
4325
4326# helper for Coro::Channel and others
4327SV *
4328_alloc (int count)
4329 CODE:
4330 RETVAL = coro_waitarray_new (aTHX_ count);
2695 OUTPUT: 4331 OUTPUT:
2696 RETVAL 4332 RETVAL
2697 4333
2698SV * 4334SV *
2699count (SV *self) 4335count (SV *self)
… …
2701 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4337 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2702 OUTPUT: 4338 OUTPUT:
2703 RETVAL 4339 RETVAL
2704 4340
2705void 4341void
2706up (SV *self, int adjust = 1) 4342up (SV *self)
2707 ALIAS:
2708 adjust = 1
2709 CODE: 4343 CODE:
2710 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4344 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
2711 4345
2712void 4346void
2713down (SV *self) 4347adjust (SV *self, int adjust)
2714 CODE: 4348 CODE:
2715 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 4349 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4350
4351void
4352down (...)
4353 CODE:
4354 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4355
4356void
4357wait (...)
4358 CODE:
4359 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2716 4360
2717void 4361void
2718try (SV *self) 4362try (SV *self)
2719 PPCODE: 4363 PPCODE:
2720{ 4364{
… …
2732 XSRETURN_NO; 4376 XSRETURN_NO;
2733} 4377}
2734 4378
2735void 4379void
2736waiters (SV *self) 4380waiters (SV *self)
2737 CODE: 4381 PPCODE:
2738{ 4382{
2739 AV *av = (AV *)SvRV (self); 4383 AV *av = (AV *)SvRV (self);
4384 int wcount = AvFILLp (av) + 1 - 1;
2740 4385
2741 if (GIMME_V == G_SCALAR) 4386 if (GIMME_V == G_SCALAR)
2742 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4387 XPUSHs (sv_2mortal (newSViv (wcount)));
2743 else 4388 else
2744 { 4389 {
2745 int i; 4390 int i;
2746 EXTEND (SP, AvFILLp (av) + 1 - 1); 4391 EXTEND (SP, wcount);
2747 for (i = 1; i <= AvFILLp (av); ++i) 4392 for (i = 1; i <= wcount; ++i)
2748 PUSHs (newSVsv (AvARRAY (av)[i])); 4393 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2749 } 4394 }
2750} 4395}
2751 4396
4397MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4398
4399void
4400_may_delete (SV *sem, int count, unsigned int extra_refs)
4401 PPCODE:
4402{
4403 AV *av = (AV *)SvRV (sem);
4404
4405 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4406 && AvFILLp (av) == 0 /* no waiters, just count */
4407 && SvIV (AvARRAY (av)[0]) == count)
4408 XSRETURN_YES;
4409
4410 XSRETURN_NO;
4411}
4412
4413MODULE = Coro::State PACKAGE = Coro::Signal
4414
4415SV *
4416new (SV *klass)
4417 CODE:
4418 RETVAL = sv_bless (
4419 coro_waitarray_new (aTHX_ 0),
4420 GvSTASH (CvGV (cv))
4421 );
4422 OUTPUT:
4423 RETVAL
4424
4425void
4426wait (...)
4427 CODE:
4428 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4429
4430void
4431broadcast (SV *self)
4432 CODE:
4433{
4434 AV *av = (AV *)SvRV (self);
4435 coro_signal_wake (aTHX_ av, AvFILLp (av));
4436}
4437
4438void
4439send (SV *self)
4440 CODE:
4441{
4442 AV *av = (AV *)SvRV (self);
4443
4444 if (AvFILLp (av))
4445 coro_signal_wake (aTHX_ av, 1);
4446 else
4447 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4448}
4449
4450IV
4451awaited (SV *self)
4452 CODE:
4453 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4454 OUTPUT:
4455 RETVAL
4456
4457
4458MODULE = Coro::State PACKAGE = Coro::AnyEvent
4459
4460BOOT:
4461 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4462
4463void
4464_schedule (...)
4465 CODE:
4466{
4467 static int incede;
4468
4469 api_cede_notself (aTHX);
4470
4471 ++incede;
4472 while (coro_nready >= incede && api_cede (aTHX))
4473 ;
4474
4475 sv_setsv (sv_activity, &PL_sv_undef);
4476 if (coro_nready >= incede)
4477 {
4478 PUSHMARK (SP);
4479 PUTBACK;
4480 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4481 }
4482
4483 --incede;
4484}
4485
4486
4487MODULE = Coro::State PACKAGE = Coro::AIO
4488
4489void
4490_register (char *target, char *proto, SV *req)
4491 CODE:
4492{
4493 SV *req_cv = s_get_cv_croak (req);
4494 /* newXSproto doesn't return the CV on 5.8 */
4495 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4496 sv_setpv ((SV *)slf_cv, proto);
4497 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4498}
4499
4500MODULE = Coro::State PACKAGE = Coro::Select
4501
4502void
4503patch_pp_sselect ()
4504 CODE:
4505 if (!coro_old_pp_sselect)
4506 {
4507 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4508 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4509 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4510 }
4511
4512void
4513unpatch_pp_sselect ()
4514 CODE:
4515 if (coro_old_pp_sselect)
4516 {
4517 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4518 coro_old_pp_sselect = 0;
4519 }
4520
4521MODULE = Coro::State PACKAGE = Coro::Util
4522
4523void
4524_exit (int code)
4525 CODE:
4526 _exit (code);
4527
4528NV
4529time ()
4530 CODE:
4531 RETVAL = nvtime (aTHX);
4532 OUTPUT:
4533 RETVAL
4534
4535NV
4536gettimeofday ()
4537 PPCODE:
4538{
4539 UV tv [2];
4540 u2time (aTHX_ tv);
4541 EXTEND (SP, 2);
4542 PUSHs (sv_2mortal (newSVuv (tv [0])));
4543 PUSHs (sv_2mortal (newSVuv (tv [1])));
4544}
4545

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