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Comparing Coro/Coro/State.xs (file contents):
Revision 1.287 by root, Mon Nov 17 07:03:12 2008 UTC vs.
Revision 1.468 by root, Sat Oct 29 19:12:46 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
111#ifdef __linux
112# include <time.h> /* for timespec */
113# include <syscall.h> /* for SYS_* */
114# ifdef SYS_clock_gettime
115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
116# define CORO_CLOCK_MONOTONIC 1
117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
118# endif
119#endif
120
121/* 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
126
152static 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);
153 134
154static U32 cctx_gen; 135static U32 cctx_gen;
155static size_t cctx_stacksize = CORO_STACKSIZE; 136static size_t cctx_stacksize = CORO_STACKSIZE;
156static struct CoroAPI coroapi; 137static struct CoroAPI coroapi;
157static AV *main_mainstack; /* used to differentiate between $main and others */ 138static AV *main_mainstack; /* used to differentiate between $main and others */
158static JMPENV *main_top_env; 139static JMPENV *main_top_env;
159static HV *coro_state_stash, *coro_stash; 140static HV *coro_state_stash, *coro_stash;
160static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 141static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
161 142
143static AV *av_destroy; /* destruction queue */
144static SV *sv_manager; /* the manager coro */
145static SV *sv_idle; /* $Coro::idle */
146
162static GV *irsgv; /* $/ */ 147static GV *irsgv; /* $/ */
163static GV *stdoutgv; /* *STDOUT */ 148static GV *stdoutgv; /* *STDOUT */
164static SV *rv_diehook; 149static SV *rv_diehook;
165static SV *rv_warnhook; 150static SV *rv_warnhook;
166static HV *hv_sig; /* %SIG */
167 151
168/* async_pool helper stuff */ 152/* async_pool helper stuff */
169static SV *sv_pool_rss; 153static SV *sv_pool_rss;
170static SV *sv_pool_size; 154static SV *sv_pool_size;
155static SV *sv_async_pool_idle; /* description string */
171static AV *av_async_pool; 156static AV *av_async_pool; /* idle pool */
157static SV *sv_Coro; /* class string */
158static CV *cv_pool_handler;
172 159
173/* Coro::AnyEvent */ 160/* Coro::AnyEvent */
174static SV *sv_activity; 161static SV *sv_activity;
175 162
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
176static struct coro_cctx *cctx_first; 169static struct coro_cctx *cctx_first;
177static int cctx_count, cctx_idle; 170static int cctx_count, cctx_idle;
178 171
179enum { 172enum
173{
180 CC_MAPPED = 0x01, 174 CC_MAPPED = 0x01,
181 CC_NOREUSE = 0x02, /* throw this away after tracing */ 175 CC_NOREUSE = 0x02, /* throw this away after tracing */
182 CC_TRACE = 0x04, 176 CC_TRACE = 0x04,
183 CC_TRACE_SUB = 0x08, /* trace sub calls */ 177 CC_TRACE_SUB = 0x08, /* trace sub calls */
184 CC_TRACE_LINE = 0x10, /* trace each statement */ 178 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
189typedef struct coro_cctx 183typedef struct coro_cctx
190{ 184{
191 struct coro_cctx *next; 185 struct coro_cctx *next;
192 186
193 /* the stack */ 187 /* the stack */
194 void *sptr; 188 struct coro_stack stack;
195 size_t ssize;
196 189
197 /* cpu state */ 190 /* cpu state */
198 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
199 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
200 JMPENV *top_env; 195 JMPENV *top_env;
201 coro_context cctx; 196 coro_context cctx;
202 197
203 U32 gen; 198 U32 gen;
204#if CORO_USE_VALGRIND 199#if CORO_USE_VALGRIND
205 int valgrind_id; 200 int valgrind_id;
206#endif 201#endif
207 unsigned char flags; 202 unsigned char flags;
208} coro_cctx; 203} coro_cctx;
209 204
205static coro_cctx *cctx_current; /* the currently running cctx */
206
207/*****************************************************************************/
208
209static MGVTBL coro_state_vtbl;
210
210enum { 211enum
212{
211 CF_RUNNING = 0x0001, /* coroutine is running */ 213 CF_RUNNING = 0x0001, /* coroutine is running */
212 CF_READY = 0x0002, /* coroutine is ready */ 214 CF_READY = 0x0002, /* coroutine is ready */
213 CF_NEW = 0x0004, /* has never been switched to */ 215 CF_NEW = 0x0004, /* has never been switched to */
214 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) */
215}; 219};
216 220
217/* 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 */
218typedef struct 222typedef struct
219{ 223{
220 SV *defsv;
221 AV *defav;
222 SV *errsv;
223 SV *irsgv;
224#define VAR(name,type) type name; 224 #define VARx(name,expr,type) type name;
225# include "state.h" 225 #include "state.h"
226#undef VAR
227} perl_slots; 226} perl_slots;
228 227
228/* how many context stack entries do we need for perl_slots */
229#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))
230 230
231/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
232struct coro { 232struct coro
233{
233 /* the C coroutine allocated to this perl coroutine, if any */ 234 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 235 coro_cctx *cctx;
236
237 /* ready queue */
238 struct coro *next_ready;
235 239
236 /* state data */ 240 /* state data */
237 struct CoroSLF slf_frame; /* saved slf frame */ 241 struct CoroSLF slf_frame; /* saved slf frame */
238 AV *mainstack; 242 AV *mainstack;
239 perl_slots *slot; /* basically the saved sp */ 243 perl_slots *slot; /* basically the saved sp */
240 244
245 CV *startcv; /* the CV to execute */
241 AV *args; /* data associated with this coroutine (initial args) */ 246 AV *args; /* data associated with this coroutine (initial args) */
242 int refcnt; /* coroutines are refcounted, yes */
243 int flags; /* CF_ flags */ 247 int flags; /* CF_ flags */
244 HV *hv; /* the perl hash associated with this coro, if any */ 248 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro);
246 249
247 /* statistics */ 250 /* statistics */
248 int usecount; /* number of transfers to this coro */ 251 int usecount; /* number of transfers to this coro */
249 252
250 /* coro process data */ 253 /* coro process data */
251 int prio; 254 int prio;
252 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 */
253 259
254 /* async_pool */ 260 /* async_pool */
255 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;
256 274
257 /* linked list */ 275 /* linked list */
258 struct coro *next, *prev; 276 struct coro *next, *prev;
259}; 277};
260 278
261typedef struct coro *Coro__State; 279typedef struct coro *Coro__State;
262typedef struct coro *Coro__State_or_hashref; 280typedef struct coro *Coro__State_or_hashref;
263 281
264/* the following variables are effectively part of the perl context */ 282/* the following variables are effectively part of the perl context */
265/* and get copied between struct coro and these variables */ 283/* and get copied between struct coro and these variables */
266/* the mainr easonw e don't support windows process emulation */ 284/* the main reason we don't support windows process emulation */
267static struct CoroSLF slf_frame; /* the current slf frame */ 285static struct CoroSLF slf_frame; /* the current slf frame */
268static SV *coro_throw;
269 286
270/** Coro ********************************************************************/ 287/** Coro ********************************************************************/
271 288
272#define PRIO_MAX 3 289#define CORO_PRIO_MAX 3
273#define PRIO_HIGH 1 290#define CORO_PRIO_HIGH 1
274#define PRIO_NORMAL 0 291#define CORO_PRIO_NORMAL 0
275#define PRIO_LOW -1 292#define CORO_PRIO_LOW -1
276#define PRIO_IDLE -3 293#define CORO_PRIO_IDLE -3
277#define PRIO_MIN -4 294#define CORO_PRIO_MIN -4
278 295
279/* for Coro.pm */ 296/* for Coro.pm */
280static SV *coro_current; 297static SV *coro_current;
281static SV *coro_readyhook; 298static SV *coro_readyhook;
282static 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;
283static struct coro *coro_first; 301static struct coro *coro_first;
284#define coro_nready coroapi.nready 302#define coro_nready coroapi.nready
285 303
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
286/** lowlevel stuff **********************************************************/ 399/** lowlevel stuff **********************************************************/
287 400
288static SV * 401static SV * ecb_noinline
289coro_get_sv (pTHX_ const char *name, int create) 402coro_get_sv (pTHX_ const char *name, int create)
290{ 403{
291#if PERL_VERSION_ATLEAST (5,10,0) 404#if PERL_VERSION_ATLEAST (5,10,0)
292 /* 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 */
293 get_sv (name, create); 406 get_sv (name, create);
294#endif 407#endif
295 return get_sv (name, create); 408 return get_sv (name, create);
296} 409}
297 410
298static AV * 411static AV * ecb_noinline
299coro_get_av (pTHX_ const char *name, int create) 412coro_get_av (pTHX_ const char *name, int create)
300{ 413{
301#if PERL_VERSION_ATLEAST (5,10,0) 414#if PERL_VERSION_ATLEAST (5,10,0)
302 /* 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 */
303 get_av (name, create); 416 get_av (name, create);
304#endif 417#endif
305 return get_av (name, create); 418 return get_av (name, create);
306} 419}
307 420
308static HV * 421static HV * ecb_noinline
309coro_get_hv (pTHX_ const char *name, int create) 422coro_get_hv (pTHX_ const char *name, int create)
310{ 423{
311#if PERL_VERSION_ATLEAST (5,10,0) 424#if PERL_VERSION_ATLEAST (5,10,0)
312 /* 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 */
313 get_hv (name, create); 426 get_hv (name, create);
314#endif 427#endif
315 return get_hv (name, create); 428 return get_hv (name, create);
316} 429}
317 430
318static 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 *
319coro_clone_padlist (pTHX_ CV *cv) 537coro_derive_padlist (pTHX_ CV *cv)
320{ 538{
321 AV *padlist = CvPADLIST (cv); 539 PADLIST *padlist = CvPADLIST (cv);
322 AV *newpadlist, *newpad; 540 PADLIST *newpadlist;
541 PADNAMELIST *padnames;
542 PAD *newpad;
543 PADOFFSET off = PadlistMAX (padlist) + 1;
323 544
324 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. */
325 AvREAL_off (newpadlist); 573 AvREAL_off (newpadlist);
326#if PERL_VERSION_ATLEAST (5,10,0)
327 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
328#else
329 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
330#endif 574#endif
331 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
332 --AvFILLp (padlist);
333 575
334 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 576 /* Already extended to 2 elements by newPADLIST. */
335 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;
336 584
337 return newpadlist; 585 return newpadlist;
338} 586}
339 587
340static void 588ecb_inline void
341free_padlist (pTHX_ AV *padlist) 589free_padlist (pTHX_ PADLIST *padlist)
342{ 590{
343 /* may be during global destruction */ 591 /* may be during global destruction */
344 if (SvREFCNT (padlist)) 592 if (!IN_DESTRUCT)
345 { 593 {
346 I32 i = AvFILLp (padlist); 594 I32 i = PadlistMAX (padlist);
347 while (i >= 0) 595
596 while (i > 0) /* special-case index 0 */
348 { 597 {
349 SV **svp = av_fetch (padlist, i--, FALSE); 598 /* we try to be extra-careful here */
599 PAD *pad = PadlistARRAY (padlist)[i--];
600
350 if (svp) 601 if (pad)
351 { 602 {
352 SV *sv; 603 I32 j = PadMAX (pad);
353 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 604
605 while (j >= 0)
354 SvREFCNT_dec (sv); 606 SvREFCNT_dec (PadARRAY (pad)[j--]);
355 607
608 PadMAX (pad) = -1;
356 SvREFCNT_dec (*svp); 609 SvREFCNT_dec (pad);
357 } 610 }
358 } 611 }
359 612
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);
360 SvREFCNT_dec ((SV*)padlist); 621 SvREFCNT_dec ((SV*)padlist);
622#endif
361 } 623 }
362} 624}
363 625
364static int 626static int
365coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 627coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
366{ 628{
367 AV *padlist; 629 PADLIST *padlist;
368 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;
369 632
370 /* casting is fun. */ 633 /* perl manages to free our internal AV and _then_ call us */
371 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 634 if (IN_DESTRUCT)
635 return 0;
636
637 while (len--)
372 free_padlist (aTHX_ padlist); 638 free_padlist (aTHX_ padlists[len]);
373
374 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
375 639
376 return 0; 640 return 0;
377} 641}
378
379#define CORO_MAGIC_type_cv 26
380#define CORO_MAGIC_type_state PERL_MAGIC_ext
381 642
382static MGVTBL coro_cv_vtbl = { 643static MGVTBL coro_cv_vtbl = {
383 0, 0, 0, 0, 644 0, 0, 0, 0,
384 coro_cv_free 645 coro_cv_free
385}; 646};
386 647
387#define CORO_MAGIC_NN(sv, type) \
388 (expect_true (SvMAGIC (sv)->mg_type == type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type))
391
392#define CORO_MAGIC(sv, type) \
393 (expect_true (SvMAGIC (sv)) \
394 ? CORO_MAGIC_NN (sv, type) \
395 : 0)
396
397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
398#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
399
400INLINE struct coro *
401SvSTATE_ (pTHX_ SV *coro)
402{
403 HV *stash;
404 MAGIC *mg;
405
406 if (SvROK (coro))
407 coro = SvRV (coro);
408
409 if (expect_false (SvTYPE (coro) != SVt_PVHV))
410 croak ("Coro::State object required");
411
412 stash = SvSTASH (coro);
413 if (expect_false (stash != coro_stash && stash != coro_state_stash))
414 {
415 /* very slow, but rare, check */
416 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
417 croak ("Coro::State object required");
418 }
419
420 mg = CORO_MAGIC_state (coro);
421 return (struct coro *)mg->mg_ptr;
422}
423
424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425
426/* faster than SvSTATE, but expects a coroutine hv */
427#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
428#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
429
430/* the next two functions merely cache the padlists */ 648/* the next two functions merely cache the padlists */
431static void 649ecb_inline void
432get_padlist (pTHX_ CV *cv) 650get_padlist (pTHX_ CV *cv)
433{ 651{
434 MAGIC *mg = CORO_MAGIC_cv (cv); 652 MAGIC *mg = CORO_MAGIC_cv (cv);
435 AV *av; 653 size_t *lenp;
436 654
437 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 655 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
438 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 656 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
439 else 657 else
440 { 658 {
441#if CORO_PREFER_PERL_FUNCTIONS 659#if CORO_PREFER_PERL_FUNCTIONS
442 /* this is probably cleaner? but also slower! */ 660 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */ 661 /* in practise, it seems to be less stable */
444 CV *cp = Perl_cv_clone (cv); 662 CV *cp = Perl_cv_clone (aTHX_ cv);
445 CvPADLIST (cv) = CvPADLIST (cp); 663 CvPADLIST (cv) = CvPADLIST (cp);
446 CvPADLIST (cp) = 0; 664 CvPADLIST (cp) = 0;
447 SvREFCNT_dec (cp); 665 SvREFCNT_dec (cp);
448#else 666#else
449 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 667 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
450#endif 668#endif
451 } 669 }
452} 670}
453 671
454static void 672ecb_inline void
455put_padlist (pTHX_ CV *cv) 673put_padlist (pTHX_ CV *cv)
456{ 674{
457 MAGIC *mg = CORO_MAGIC_cv (cv); 675 MAGIC *mg = CORO_MAGIC_cv (cv);
458 AV *av;
459 676
460 if (expect_false (!mg)) 677 if (ecb_expect_false (!mg))
678 {
461 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);
462 687
463 av = (AV *)mg->mg_obj; 688 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
464
465 if (expect_false (AvFILLp (av) >= AvMAX (av)))
466 av_extend (av, AvMAX (av) + 1);
467
468 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
469} 689}
470 690
471/** 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);
472 764
473static void 765static void
474load_perl (pTHX_ Coro__State c) 766load_perl (pTHX_ Coro__State c)
475{ 767{
476 perl_slots *slot = c->slot; 768 perl_slots *slot = c->slot;
477 c->slot = 0; 769 c->slot = 0;
478 770
479 PL_mainstack = c->mainstack; 771 PL_mainstack = c->mainstack;
480 772
481 GvSV (PL_defgv) = slot->defsv; 773#if CORO_JIT
482 GvAV (PL_defgv) = slot->defav; 774 load_perl_slots (slot);
483 GvSV (PL_errgv) = slot->errsv; 775#else
484 GvSV (irsgv) = slot->irsgv;
485
486 #define VAR(name,type) PL_ ## name = slot->name; 776 #define VARx(name,expr,type) expr = slot->name;
487 # include "state.h" 777 #include "state.h"
488 #undef VAR 778#endif
489 779
490 { 780 {
491 dSP; 781 dSP;
492 782
493 CV *cv; 783 CV *cv;
494 784
495 /* now do the ugly restore mess */ 785 /* now do the ugly restore mess */
496 while (expect_true (cv = (CV *)POPs)) 786 while (ecb_expect_true (cv = (CV *)POPs))
497 { 787 {
498 put_padlist (aTHX_ cv); /* mark this padlist as available */ 788 put_padlist (aTHX_ cv); /* mark this padlist as available */
499 CvDEPTH (cv) = PTR2IV (POPs); 789 CvDEPTH (cv) = PTR2IV (POPs);
500 CvPADLIST (cv) = (AV *)POPs; 790 CvPADLIST (cv) = (PADLIST *)POPs;
501 } 791 }
502 792
503 PUTBACK; 793 PUTBACK;
504 } 794 }
505 795
506 slf_frame = c->slf_frame; 796 slf_frame = c->slf_frame;
507 coro_throw = c->throw; 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);
508} 824}
509 825
510static void 826static void
511save_perl (pTHX_ Coro__State c) 827save_perl (pTHX_ Coro__State c)
512{ 828{
513 c->throw = coro_throw; 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;
514 c->slf_frame = slf_frame; 856 c->slf_frame = slf_frame;
515 857
516 { 858 {
517 dSP; 859 dSP;
518 I32 cxix = cxstack_ix; 860 I32 cxix = cxstack_ix;
… …
526 868
527 XPUSHs (Nullsv); 869 XPUSHs (Nullsv);
528 /* this loop was inspired by pp_caller */ 870 /* this loop was inspired by pp_caller */
529 for (;;) 871 for (;;)
530 { 872 {
531 while (expect_true (cxix >= 0)) 873 while (ecb_expect_true (cxix >= 0))
532 { 874 {
533 PERL_CONTEXT *cx = &ccstk[cxix--]; 875 PERL_CONTEXT *cx = &ccstk[cxix--];
534 876
535 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))
536 { 878 {
537 CV *cv = cx->blk_sub.cv; 879 CV *cv = cx->blk_sub.cv;
538 880
539 if (expect_true (CvDEPTH (cv))) 881 if (ecb_expect_true (CvDEPTH (cv)))
540 { 882 {
541 EXTEND (SP, 3); 883 EXTEND (SP, 3);
542 PUSHs ((SV *)CvPADLIST (cv)); 884 PUSHs ((SV *)CvPADLIST (cv));
543 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 885 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
544 PUSHs ((SV *)cv); 886 PUSHs ((SV *)cv);
… …
547 get_padlist (aTHX_ cv); 889 get_padlist (aTHX_ cv);
548 } 890 }
549 } 891 }
550 } 892 }
551 893
552 if (expect_true (top_si->si_type == PERLSI_MAIN)) 894 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
553 break; 895 break;
554 896
555 top_si = top_si->si_prev; 897 top_si = top_si->si_prev;
556 ccstk = top_si->si_cxstack; 898 ccstk = top_si->si_cxstack;
557 cxix = top_si->si_cxix; 899 cxix = top_si->si_cxix;
… …
559 901
560 PUTBACK; 902 PUTBACK;
561 } 903 }
562 904
563 /* allocate some space on the context stack for our purposes */ 905 /* allocate some space on the context stack for our purposes */
564 /* we manually unroll here, as usually 2 slots is enough */ 906 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
565 if (SLOT_COUNT >= 1) CXINC;
566 if (SLOT_COUNT >= 2) CXINC;
567 if (SLOT_COUNT >= 3) CXINC;
568 { 907 {
569 int i; 908 unsigned int i;
909
570 for (i = 3; i < SLOT_COUNT; ++i) 910 for (i = 0; i < SLOT_COUNT; ++i)
571 CXINC; 911 CXINC;
572 } 912
573 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 913 cxstack_ix -= SLOT_COUNT; /* undo allocation */
914 }
574 915
575 c->mainstack = PL_mainstack; 916 c->mainstack = PL_mainstack;
576 917
577 { 918 {
578 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 919 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
579 920
580 slot->defav = GvAV (PL_defgv); 921#if CORO_JIT
581 slot->defsv = DEFSV; 922 save_perl_slots (slot);
582 slot->errsv = ERRSV; 923#else
583 slot->irsgv = GvSV (irsgv);
584
585 #define VAR(name,type) slot->name = PL_ ## name; 924 #define VARx(name,expr,type) slot->name = expr;
586 # include "state.h" 925 #include "state.h"
587 #undef VAR 926#endif
588 } 927 }
589} 928}
590 929
591/* 930/*
592 * allocate various perl stacks. This is almost an exact copy 931 * allocate various perl stacks. This is almost an exact copy
593 * of perl.c:init_stacks, except that it uses less memory 932 * of perl.c:init_stacks, except that it uses less memory
594 * on the (sometimes correct) assumption that coroutines do 933 * on the (sometimes correct) assumption that coroutines do
595 * not usually need a lot of stackspace. 934 * not usually need a lot of stackspace.
596 */ 935 */
597#if CORO_PREFER_PERL_FUNCTIONS 936#if CORO_PREFER_PERL_FUNCTIONS
598# define coro_init_stacks init_stacks 937# define coro_init_stacks(thx) init_stacks ()
599#else 938#else
600static void 939static void
601coro_init_stacks (pTHX) 940coro_init_stacks (pTHX)
602{ 941{
603 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() */
604 PL_curstackinfo->si_type = PERLSI_MAIN; 943 PL_curstackinfo->si_type = PERLSI_MAIN;
605 PL_curstack = PL_curstackinfo->si_stack; 944 PL_curstack = PL_curstackinfo->si_stack;
606 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 945 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
607 946
608 PL_stack_base = AvARRAY(PL_curstack); 947 PL_stack_base = AvARRAY(PL_curstack);
… …
623#endif 962#endif
624 963
625 New(54,PL_scopestack,8,I32); 964 New(54,PL_scopestack,8,I32);
626 PL_scopestack_ix = 0; 965 PL_scopestack_ix = 0;
627 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
628 970
629 New(54,PL_savestack,24,ANY); 971 New(54,PL_savestack,24,ANY);
630 PL_savestack_ix = 0; 972 PL_savestack_ix = 0;
631 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
632 979
633#if !PERL_VERSION_ATLEAST (5,10,0) 980#if !PERL_VERSION_ATLEAST (5,10,0)
634 New(54,PL_retstack,4,OP*); 981 New(54,PL_retstack,4,OP*);
635 PL_retstack_ix = 0; 982 PL_retstack_ix = 0;
636 PL_retstack_max = 4; 983 PL_retstack_max = 4;
… …
660 } 1007 }
661 1008
662 Safefree (PL_tmps_stack); 1009 Safefree (PL_tmps_stack);
663 Safefree (PL_markstack); 1010 Safefree (PL_markstack);
664 Safefree (PL_scopestack); 1011 Safefree (PL_scopestack);
1012#if HAS_SCOPESTACK_NAME
1013 Safefree (PL_scopestack_name);
1014#endif
665 Safefree (PL_savestack); 1015 Safefree (PL_savestack);
666#if !PERL_VERSION_ATLEAST (5,10,0) 1016#if !PERL_VERSION_ATLEAST (5,10,0)
667 Safefree (PL_retstack); 1017 Safefree (PL_retstack);
668#endif 1018#endif
669} 1019}
670 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
671static size_t 1030static size_t
672coro_rss (pTHX_ struct coro *coro) 1031coro_rss (pTHX_ struct coro *coro)
673{ 1032{
674 size_t rss = sizeof (*coro); 1033 size_t rss = sizeof (*coro);
675 1034
676 if (coro->mainstack) 1035 if (coro->mainstack)
677 { 1036 {
678 perl_slots tmp_slot;
679 perl_slots *slot;
680
681 if (coro->flags & CF_RUNNING) 1037 if (coro->flags & CF_RUNNING)
682 { 1038 {
683 slot = &tmp_slot; 1039 #define SYM(sym) PL_ ## sym
684 1040 CORO_RSS;
685 #define VAR(name,type) slot->name = PL_ ## name;
686 # include "state.h"
687 #undef VAR 1041 #undef SYM
688 } 1042 }
689 else 1043 else
690 slot = coro->slot;
691
692 if (slot)
693 { 1044 {
694 rss += sizeof (slot->curstackinfo); 1045 #define SYM(sym) coro->slot->sym
695 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1046 CORO_RSS;
696 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1047 #undef SYM
697 rss += slot->tmps_max * sizeof (SV *);
698 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
699 rss += slot->scopestack_max * sizeof (I32);
700 rss += slot->savestack_max * sizeof (ANY);
701
702#if !PERL_VERSION_ATLEAST (5,10,0)
703 rss += slot->retstack_max * sizeof (OP *);
704#endif
705 } 1048 }
706 } 1049 }
707 1050
708 return rss; 1051 return rss;
709} 1052}
710 1053
711/** coroutine stack handling ************************************************/ 1054/** provide custom get/set/clear methods for %SIG elements ******************/
712
713static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
714static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
715static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
716 1055
717/* apparently < 5.8.8 */ 1056/* apparently < 5.8.8 */
718#ifndef MgPV_nolen_const 1057#ifndef MgPV_nolen_const
719#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1058#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
720 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1059 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
721 (const char*)(mg)->mg_ptr) 1060 (const char*)(mg)->mg_ptr)
722#endif 1061#endif
723 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
724/* 1091/*
725 * This overrides the default magic get method of %SIG elements. 1092 * This overrides the default magic get method of %SIG elements.
726 * 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
727 * 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),
728 * readback here. 1095 * we just provide our own readback here.
729 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
730 * not expecting this to actually change the hook. This is a potential problem
731 * when a schedule happens then, but we ignore this.
732 */ 1096 */
733static int 1097static int ecb_cold
734coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1098coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
735{ 1099{
736 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;
737 1103
738 if (*s == '_') 1104 SV *ssv;
739 {
740 SV **svp = 0;
741 1105
742 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
743 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
744
745 if (svp) 1106 if (!*svp)
746 { 1107 ssv = &PL_sv_undef;
747 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1108 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
748 return 0; 1109 ssv = sv_2mortal (newRV_inc (*svp));
749 } 1110 else
750 } 1111 ssv = *svp;
751 1112
752 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1113 sv_setsv (sv, ssv);
1114 return 0;
753} 1115}
754 1116
755static int 1117static int ecb_cold
756coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1118coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
757{ 1119{
758 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;
759 1123
760 if (*s == '_')
761 {
762 SV **svp = 0;
763
764 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
765 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
766
767 if (svp)
768 {
769 SV *old = *svp; 1124 SV *old = *svp;
770 *svp = 0; 1125 *svp = 0;
771 SvREFCNT_dec (old); 1126 SvREFCNT_dec (old);
772 return 0; 1127 return 0;
773 }
774 }
775
776 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
777} 1128}
778 1129
779static int 1130static int ecb_cold
780coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1131coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
781{ 1132{
782 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;
783 1136
784 if (*s == '_')
785 {
786 SV **svp = 0;
787
788 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
789 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
790
791 if (svp)
792 {
793 SV *old = *svp; 1137 SV *old = *svp;
794 *svp = newSVsv (sv); 1138 *svp = SvOK (sv) ? newSVsv (sv) : 0;
795 SvREFCNT_dec (old); 1139 SvREFCNT_dec (old);
796 return 0; 1140 return 0;
797 }
798 }
799
800 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
801} 1141}
802 1142
803static void 1143static void
804prepare_nop (pTHX_ struct coro_transfer_args *ta) 1144prepare_nop (pTHX_ struct coro_transfer_args *ta)
805{ 1145{
… …
811slf_check_nop (pTHX_ struct CoroSLF *frame) 1151slf_check_nop (pTHX_ struct CoroSLF *frame)
812{ 1152{
813 return 0; 1153 return 0;
814} 1154}
815 1155
816static void NOINLINE /* noinline to keep it out of the transfer fast path */ 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 */
817coro_setup (pTHX_ struct coro *coro) 1167init_perl (pTHX_ struct coro *coro)
818{ 1168{
819 /* 1169 /*
820 * emulate part of the perl startup here. 1170 * emulate part of the perl startup here.
821 */ 1171 */
822 coro_init_stacks (aTHX); 1172 coro_init_stacks (aTHX);
823 1173
824 PL_runops = RUNOPS_DEFAULT; 1174 PL_runops = RUNOPS_DEFAULT;
825 PL_curcop = &PL_compiling; 1175 PL_curcop = &PL_compiling;
826 PL_in_eval = EVAL_NULL; 1176 PL_in_eval = EVAL_NULL;
827 PL_comppad = 0; 1177 PL_comppad = 0;
1178 PL_comppad_name = 0;
1179 PL_comppad_name_fill = 0;
1180 PL_comppad_name_floor = 0;
828 PL_curpm = 0; 1181 PL_curpm = 0;
829 PL_curpad = 0; 1182 PL_curpad = 0;
830 PL_localizing = 0; 1183 PL_localizing = 0;
831 PL_dirty = 0;
832 PL_restartop = 0; 1184 PL_restartop = 0;
833#if PERL_VERSION_ATLEAST (5,10,0) 1185#if PERL_VERSION_ATLEAST (5,10,0)
834 PL_parser = 0; 1186 PL_parser = 0;
835#endif 1187#endif
1188 PL_hints = 0;
836 1189
837 /* recreate the die/warn hooks */ 1190 /* recreate the die/warn hooks */
838 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1191 PL_diehook = SvREFCNT_inc (rv_diehook);
839 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1192 PL_warnhook = SvREFCNT_inc (rv_warnhook);
840 1193
841 GvSV (PL_defgv) = newSV (0); 1194 GvSV (PL_defgv) = newSV (0);
842 GvAV (PL_defgv) = coro->args; coro->args = 0; 1195 GvAV (PL_defgv) = coro->args; coro->args = 0;
843 GvSV (PL_errgv) = newSV (0); 1196 GvSV (PL_errgv) = newSV (0);
844 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
845 PL_rs = newSVsv (GvSV (irsgv)); 1202 PL_rs = newSVsv (GvSV (irsgv));
846 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1203 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
847 1204
848 { 1205 {
849 dSP; 1206 dSP;
850 UNOP myop; 1207 UNOP myop;
851 1208
852 Zero (&myop, 1, UNOP); 1209 Zero (&myop, 1, UNOP);
853 myop.op_next = Nullop; 1210 myop.op_next = Nullop;
1211 myop.op_type = OP_ENTERSUB;
854 myop.op_flags = OPf_WANT_VOID; 1212 myop.op_flags = OPf_WANT_VOID;
855 1213
856 PUSHMARK (SP); 1214 PUSHMARK (SP);
857 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1215 PUSHs ((SV *)coro->startcv);
858 PUTBACK; 1216 PUTBACK;
859 PL_op = (OP *)&myop; 1217 PL_op = (OP *)&myop;
860 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1218 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
861 SPAGAIN;
862 } 1219 }
863 1220
864 /* 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
865 * 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.
866 */ 1223 */
867 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 */
868 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 */
1226 slf_frame.destroy = 0;
869 1227
870 coro_throw = coro->throw; 1228 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
871} 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 */
872 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
873static void 1248static void
874coro_destruct (pTHX_ struct coro *coro) 1249coro_unwind_stacks (pTHX)
875{ 1250{
876 if (!IN_DESTRUCT) 1251 if (!IN_DESTRUCT)
877 { 1252 {
878 /* restore all saved variables and stuff */ 1253 /* restore all saved variables and stuff */
879 LEAVE_SCOPE (0); 1254 LEAVE_SCOPE (0);
… …
887 POPSTACK_TO (PL_mainstack); 1262 POPSTACK_TO (PL_mainstack);
888 1263
889 /* unwind main stack */ 1264 /* unwind main stack */
890 dounwind (-1); 1265 dounwind (-1);
891 } 1266 }
1267}
892 1268
893 SvREFCNT_dec (GvSV (PL_defgv)); 1269static void
894 SvREFCNT_dec (GvAV (PL_defgv)); 1270destroy_perl (pTHX_ struct coro *coro)
895 SvREFCNT_dec (GvSV (PL_errgv)); 1271{
896 SvREFCNT_dec (PL_defoutgv); 1272 SV *svf [9];
897 SvREFCNT_dec (PL_rs);
898 SvREFCNT_dec (GvSV (irsgv));
899 1273
900 SvREFCNT_dec (PL_diehook);
901 SvREFCNT_dec (PL_warnhook);
902 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
903 SvREFCNT_dec (coro->saved_deffh); 1317 SvREFCNT_dec (coro->saved_deffh);
904 SvREFCNT_dec (coro_throw); 1318 SvREFCNT_dec (coro->rouse_cb);
905 1319 SvREFCNT_dec (coro->invoke_cb);
906 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 }
907} 1324}
908 1325
909INLINE void 1326ecb_inline void
910free_coro_mortal (pTHX) 1327free_coro_mortal (pTHX)
911{ 1328{
912 if (expect_true (coro_mortal)) 1329 if (ecb_expect_true (coro_mortal))
913 { 1330 {
914 SvREFCNT_dec (coro_mortal); 1331 SvREFCNT_dec ((SV *)coro_mortal);
915 coro_mortal = 0; 1332 coro_mortal = 0;
916 } 1333 }
917} 1334}
918 1335
919static int 1336static int
920runops_trace (pTHX) 1337runops_trace (pTHX)
921{ 1338{
922 COP *oldcop = 0; 1339 COP *oldcop = 0;
923 int oldcxix = -2; 1340 int oldcxix = -2;
924 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
925 coro_cctx *cctx = coro->cctx;
926 1341
927 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1342 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
928 { 1343 {
929 PERL_ASYNC_CHECK (); 1344 PERL_ASYNC_CHECK ();
930 1345
931 if (cctx->flags & CC_TRACE_ALL) 1346 if (cctx_current->flags & CC_TRACE_ALL)
932 { 1347 {
933 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)
934 { 1349 {
935 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1350 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
936 SV **bot, **top; 1351 SV **bot, **top;
937 AV *av = newAV (); /* return values */ 1352 AV *av = newAV (); /* return values */
938 SV **cb; 1353 SV **cb;
… …
975 1390
976 if (PL_curcop != &PL_compiling) 1391 if (PL_curcop != &PL_compiling)
977 { 1392 {
978 SV **cb; 1393 SV **cb;
979 1394
980 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1395 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
981 { 1396 {
982 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1397 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
983 1398
984 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1399 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
985 { 1400 {
986 runops_proc_t old_runops = PL_runops;
987 dSP; 1401 dSP;
988 GV *gv = CvGV (cx->blk_sub.cv); 1402 GV *gv = CvGV (cx->blk_sub.cv);
989 SV *fullname = sv_2mortal (newSV (0)); 1403 SV *fullname = sv_2mortal (newSV (0));
990 1404
991 if (isGV (gv)) 1405 if (isGV (gv))
… …
996 SAVETMPS; 1410 SAVETMPS;
997 EXTEND (SP, 3); 1411 EXTEND (SP, 3);
998 PUSHMARK (SP); 1412 PUSHMARK (SP);
999 PUSHs (&PL_sv_yes); 1413 PUSHs (&PL_sv_yes);
1000 PUSHs (fullname); 1414 PUSHs (fullname);
1001 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);
1002 PUTBACK; 1416 PUTBACK;
1003 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);
1004 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);
1005 SPAGAIN; 1419 SPAGAIN;
1006 FREETMPS; 1420 FREETMPS;
… …
1009 } 1423 }
1010 1424
1011 oldcxix = cxstack_ix; 1425 oldcxix = cxstack_ix;
1012 } 1426 }
1013 1427
1014 if (cctx->flags & CC_TRACE_LINE) 1428 if (cctx_current->flags & CC_TRACE_LINE)
1015 { 1429 {
1016 dSP; 1430 dSP;
1017 1431
1018 PL_runops = RUNOPS_DEFAULT; 1432 PL_runops = RUNOPS_DEFAULT;
1019 ENTER; 1433 ENTER;
… …
1038 1452
1039 TAINT_NOT; 1453 TAINT_NOT;
1040 return 0; 1454 return 0;
1041} 1455}
1042 1456
1457static struct CoroSLF cctx_ssl_frame;
1458
1043static void 1459static void
1044prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1460slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1045{ 1461{
1046 ta->prev = (struct coro *)cctx;
1047 ta->next = 0; 1462 ta->prev = 0;
1048} 1463}
1049 1464
1050/* inject a fake call to Coro::State::_cctx_init into the execution */ 1465static int
1051/* _cctx_init should be careful, as it could be called at almost any time */ 1466slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1052/* during execution of a perl program */
1053/* also initialises PL_top_env */
1054static void NOINLINE
1055cctx_prepare (pTHX_ coro_cctx *cctx)
1056{ 1467{
1057 dSP; 1468 *frame = cctx_ssl_frame;
1058 UNOP myop;
1059 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{
1060 PL_top_env = &PL_start_env; 1477 PL_top_env = &PL_start_env;
1061 1478
1062 if (cctx->flags & CC_TRACE) 1479 if (cctx_current->flags & CC_TRACE)
1063 PL_runops = runops_trace; 1480 PL_runops = runops_trace;
1064 1481
1065 Zero (&myop, 1, UNOP); 1482 /* we already must be executing an SLF op, there is no other valid way
1066 myop.op_next = PL_op; 1483 * that can lead to creation of a new cctx */
1067 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));
1068 1486
1069 PUSHMARK (SP); 1487 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1070 EXTEND (SP, 2); 1488 cctx_ssl_frame = slf_frame;
1071 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1489
1072 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1490 slf_frame.prepare = slf_prepare_set_stacklevel;
1073 PUTBACK; 1491 slf_frame.check = slf_check_set_stacklevel;
1074 PL_op = (OP *)&myop;
1075 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1076 SPAGAIN;
1077} 1492}
1078 1493
1079/* 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 */
1080INLINE void 1495ecb_inline void
1081transfer_tail (pTHX) 1496transfer_tail (pTHX)
1082{ 1497{
1083 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);
1084} 1511}
1085 1512
1086/* 1513/*
1087 * this is a _very_ stripped down perl interpreter ;) 1514 * this is a _very_ stripped down perl interpreter ;)
1088 */ 1515 */
… …
1100 /* normally we would need to skip the entersub here */ 1527 /* normally we would need to skip the entersub here */
1101 /* 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 */
1102 /* PL_nop = PL_nop->op_next */ 1529 /* PL_nop = PL_nop->op_next */
1103 1530
1104 /* inject a fake subroutine call to cctx_init */ 1531 /* inject a fake subroutine call to cctx_init */
1105 cctx_prepare (aTHX_ (coro_cctx *)arg); 1532 cctx_prepare (aTHX);
1106 1533
1107 /* cctx_run is the alternative tail of transfer() */ 1534 /* cctx_run is the alternative tail of transfer() */
1108 transfer_tail (aTHX); 1535 transfer_tail (aTHX);
1109 1536
1110 /* 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 */
1111 PL_restartop = PL_op; 1538 PL_restartop = PL_op;
1112 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;
1113 1552
1114 /* 1553 /*
1115 * 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
1116 * 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)
1117 * 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
1118 * bootstrap-time "top" top_env, as we cannot restore the "main" 1557 * doing in that case. YMMV.
1119 * coroutine as Coro has no such concept
1120 */ 1558 */
1121 PL_top_env = main_top_env; 1559 perlish_exit (aTHX);
1122 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1123 } 1560 }
1124} 1561}
1125 1562
1126static coro_cctx * 1563static coro_cctx *
1127cctx_new () 1564cctx_new (void)
1128{ 1565{
1129 coro_cctx *cctx; 1566 coro_cctx *cctx;
1130 1567
1131 ++cctx_count; 1568 ++cctx_count;
1132 New (0, cctx, 1, coro_cctx); 1569 New (0, cctx, 1, coro_cctx);
… …
1138 return cctx; 1575 return cctx;
1139} 1576}
1140 1577
1141/* create a new cctx only suitable as source */ 1578/* create a new cctx only suitable as source */
1142static coro_cctx * 1579static coro_cctx *
1143cctx_new_empty () 1580cctx_new_empty (void)
1144{ 1581{
1145 coro_cctx *cctx = cctx_new (); 1582 coro_cctx *cctx = cctx_new ();
1146 1583
1147 cctx->sptr = 0; 1584 cctx->stack.sptr = 0;
1148 coro_create (&cctx->cctx, 0, 0, 0, 0); 1585 coro_create (&cctx->cctx, 0, 0, 0, 0);
1149 1586
1150 return cctx; 1587 return cctx;
1151} 1588}
1152 1589
1153/* create a new cctx suitable as destination/running a perl interpreter */ 1590/* create a new cctx suitable as destination/running a perl interpreter */
1154static coro_cctx * 1591static coro_cctx *
1155cctx_new_run () 1592cctx_new_run (void)
1156{ 1593{
1157 coro_cctx *cctx = cctx_new (); 1594 coro_cctx *cctx = cctx_new ();
1158 void *stack_start;
1159 size_t stack_size;
1160 1595
1161#if HAVE_MMAP 1596 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1162 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1163 /* mmap supposedly does allocate-on-write for us */
1164 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1165
1166 if (cctx->sptr != (void *)-1)
1167 {
1168 #if CORO_STACKGUARD
1169 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1170 #endif
1171 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1172 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1173 cctx->flags |= CC_MAPPED;
1174 } 1597 {
1175 else
1176#endif
1177 {
1178 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1179 New (0, cctx->sptr, cctx_stacksize, long);
1180
1181 if (!cctx->sptr)
1182 {
1183 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1598 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1184 _exit (EXIT_FAILURE); 1599 _exit (EXIT_FAILURE);
1185 }
1186
1187 stack_start = cctx->sptr;
1188 stack_size = cctx->ssize;
1189 } 1600 }
1190 1601
1191 #if CORO_USE_VALGRIND
1192 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1193 #endif
1194
1195 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);
1196 1603
1197 return cctx; 1604 return cctx;
1198} 1605}
1199 1606
1200static void 1607static void
1201cctx_destroy (coro_cctx *cctx) 1608cctx_destroy (coro_cctx *cctx)
1202{ 1609{
1203 if (!cctx) 1610 if (!cctx)
1204 return; 1611 return;
1205 1612
1613 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1614
1206 --cctx_count; 1615 --cctx_count;
1207 coro_destroy (&cctx->cctx); 1616 coro_destroy (&cctx->cctx);
1208 1617
1209 /* coro_transfer creates new, empty cctx's */ 1618 coro_stack_free (&cctx->stack);
1210 if (cctx->sptr)
1211 {
1212 #if CORO_USE_VALGRIND
1213 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1214 #endif
1215
1216#if HAVE_MMAP
1217 if (cctx->flags & CC_MAPPED)
1218 munmap (cctx->sptr, cctx->ssize);
1219 else
1220#endif
1221 Safefree (cctx->sptr);
1222 }
1223 1619
1224 Safefree (cctx); 1620 Safefree (cctx);
1225} 1621}
1226 1622
1227/* wether this cctx should be destructed */ 1623/* wether this cctx should be destructed */
1228#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))
1229 1625
1230static coro_cctx * 1626static coro_cctx *
1231cctx_get (pTHX) 1627cctx_get (pTHX)
1232{ 1628{
1233 while (expect_true (cctx_first)) 1629 while (ecb_expect_true (cctx_first))
1234 { 1630 {
1235 coro_cctx *cctx = cctx_first; 1631 coro_cctx *cctx = cctx_first;
1236 cctx_first = cctx->next; 1632 cctx_first = cctx->next;
1237 --cctx_idle; 1633 --cctx_idle;
1238 1634
1239 if (expect_true (!CCTX_EXPIRED (cctx))) 1635 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1240 return cctx; 1636 return cctx;
1241 1637
1242 cctx_destroy (cctx); 1638 cctx_destroy (cctx);
1243 } 1639 }
1244 1640
… …
1246} 1642}
1247 1643
1248static void 1644static void
1249cctx_put (coro_cctx *cctx) 1645cctx_put (coro_cctx *cctx)
1250{ 1646{
1251 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));
1252 1648
1253 /* free another cctx if overlimit */ 1649 /* free another cctx if overlimit */
1254 if (expect_false (cctx_idle >= cctx_max_idle)) 1650 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1255 { 1651 {
1256 coro_cctx *first = cctx_first; 1652 coro_cctx *first = cctx_first;
1257 cctx_first = first->next; 1653 cctx_first = first->next;
1258 --cctx_idle; 1654 --cctx_idle;
1259 1655
… …
1270static void 1666static void
1271transfer_check (pTHX_ struct coro *prev, struct coro *next) 1667transfer_check (pTHX_ struct coro *prev, struct coro *next)
1272{ 1668{
1273 /* TODO: throwing up here is considered harmful */ 1669 /* TODO: throwing up here is considered harmful */
1274 1670
1275 if (expect_true (prev != next)) 1671 if (ecb_expect_true (prev != next))
1276 { 1672 {
1277 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1673 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1278 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,");
1279 1675
1280 if (expect_false (next->flags & CF_RUNNING)) 1676 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1281 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1282
1283 if (expect_false (next->flags & CF_DESTROYED))
1284 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,");
1285 1678
1286#if !PERL_VERSION_ATLEAST (5,10,0) 1679#if !PERL_VERSION_ATLEAST (5,10,0)
1287 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1680 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1288 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,");
1289#endif 1682#endif
1290 } 1683 }
1291} 1684}
1292 1685
1293/* always use the TRANSFER macro */ 1686/* always use the TRANSFER macro */
1294static void NOINLINE /* noinline so we have a fixed stackframe */ 1687static void ecb_noinline /* noinline so we have a fixed stackframe */
1295transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1688transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1296{ 1689{
1297 dSTACKLEVEL; 1690 dSTACKLEVEL;
1298 1691
1299 /* sometimes transfer is only called to set idle_sp */ 1692 /* sometimes transfer is only called to set idle_sp */
1300 if (expect_false (!next)) 1693 if (ecb_expect_false (!prev))
1301 { 1694 {
1302 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1695 cctx_current->idle_sp = STACKLEVEL;
1303 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 */
1304 } 1697 }
1305 else if (expect_true (prev != next)) 1698 else if (ecb_expect_true (prev != next))
1306 { 1699 {
1307 coro_cctx *prev__cctx; 1700 coro_cctx *cctx_prev;
1308 1701
1309 if (expect_false (prev->flags & CF_NEW)) 1702 if (ecb_expect_false (prev->flags & CF_NEW))
1310 { 1703 {
1311 /* create a new empty/source context */ 1704 /* create a new empty/source context */
1312 prev->cctx = cctx_new_empty ();
1313 prev->flags &= ~CF_NEW; 1705 prev->flags &= ~CF_NEW;
1314 prev->flags |= CF_RUNNING; 1706 prev->flags |= CF_RUNNING;
1315 } 1707 }
1316 1708
1317 prev->flags &= ~CF_RUNNING; 1709 prev->flags &= ~CF_RUNNING;
1318 next->flags |= CF_RUNNING; 1710 next->flags |= CF_RUNNING;
1319 1711
1320 /* first get rid of the old state */ 1712 /* first get rid of the old state */
1321 save_perl (aTHX_ prev); 1713 save_perl (aTHX_ prev);
1322 1714
1323 if (expect_false (next->flags & CF_NEW)) 1715 if (ecb_expect_false (next->flags & CF_NEW))
1324 { 1716 {
1325 /* need to start coroutine */ 1717 /* need to start coroutine */
1326 next->flags &= ~CF_NEW; 1718 next->flags &= ~CF_NEW;
1327 /* setup coroutine call */ 1719 /* setup coroutine call */
1328 coro_setup (aTHX_ next); 1720 init_perl (aTHX_ next);
1329 } 1721 }
1330 else 1722 else
1331 load_perl (aTHX_ next); 1723 load_perl (aTHX_ next);
1332 1724
1333 prev__cctx = prev->cctx;
1334
1335 /* possibly untie and reuse the cctx */ 1725 /* possibly untie and reuse the cctx */
1336 if (expect_true ( 1726 if (ecb_expect_true (
1337 prev__cctx->idle_sp == (void *)stacklevel 1727 cctx_current->idle_sp == STACKLEVEL
1338 && !(prev__cctx->flags & CC_TRACE) 1728 && !(cctx_current->flags & CC_TRACE)
1339 && !force_cctx 1729 && !force_cctx
1340 )) 1730 ))
1341 { 1731 {
1342 /* 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 */
1343 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));
1344 1734
1345 prev->cctx = 0;
1346
1347 /* 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. */
1348 /* 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 */
1349 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1737 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1350 if (!next->cctx) 1738 if (ecb_expect_true (!next->cctx))
1351 next->cctx = cctx_get (aTHX); 1739 next->cctx = cctx_get (aTHX);
1352 1740
1353 cctx_put (prev__cctx); 1741 cctx_put (cctx_current);
1354 } 1742 }
1743 else
1744 prev->cctx = cctx_current;
1355 1745
1356 ++next->usecount; 1746 ++next->usecount;
1357 1747
1358 if (expect_true (!next->cctx)) 1748 cctx_prev = cctx_current;
1359 next->cctx = cctx_get (aTHX); 1749 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1360 1750
1361 if (expect_false (prev__cctx != next->cctx)) 1751 next->cctx = 0;
1752
1753 if (ecb_expect_false (cctx_prev != cctx_current))
1362 { 1754 {
1363 prev__cctx->top_env = PL_top_env; 1755 cctx_prev->top_env = PL_top_env;
1364 PL_top_env = next->cctx->top_env; 1756 PL_top_env = cctx_current->top_env;
1365 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1757 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1366 } 1758 }
1367 1759
1368 transfer_tail (aTHX); 1760 transfer_tail (aTHX);
1369 } 1761 }
1370} 1762}
… …
1372#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))
1373#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1765#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1374 1766
1375/** high level stuff ********************************************************/ 1767/** high level stuff ********************************************************/
1376 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 */
1377static int 1771static void
1772coro_call_on_destroy (pTHX_ struct coro *coro);
1773
1774static void
1378coro_state_destroy (pTHX_ struct coro *coro) 1775coro_state_destroy (pTHX_ struct coro *coro)
1379{ 1776{
1380 if (coro->flags & CF_DESTROYED) 1777 if (coro->flags & CF_ZOMBIE)
1381 return 0; 1778 return;
1382 1779
1383 if (coro->on_destroy)
1384 coro->on_destroy (aTHX_ coro); 1780 slf_destroy (aTHX_ coro);
1385 1781
1386 coro->flags |= CF_DESTROYED; 1782 coro->flags |= CF_ZOMBIE;
1387 1783
1388 if (coro->flags & CF_READY) 1784 if (coro->flags & CF_READY)
1389 { 1785 {
1390 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1786 /* reduce nready, as destroying a ready coro effectively unreadies it */
1391 /* alternative: look through all ready queues and remove the coro */ 1787 /* alternative: look through all ready queues and remove the coro */
1392 --coro_nready; 1788 --coro_nready;
1393 } 1789 }
1394 else 1790 else
1395 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 */
1396 1792
1397 if (coro->mainstack && coro->mainstack != main_mainstack)
1398 {
1399 struct coro temp;
1400
1401 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1402
1403 save_perl (aTHX_ &temp);
1404 load_perl (aTHX_ coro);
1405
1406 coro_destruct (aTHX_ coro);
1407
1408 load_perl (aTHX_ &temp);
1409
1410 coro->slot = 0;
1411 }
1412
1413 cctx_destroy (coro->cctx);
1414 SvREFCNT_dec (coro->args);
1415
1416 if (coro->next) coro->next->prev = coro->prev; 1793 if (coro->next) coro->next->prev = coro->prev;
1417 if (coro->prev) coro->prev->next = coro->next; 1794 if (coro->prev) coro->prev->next = coro->next;
1418 if (coro == coro_first) coro_first = coro->next; 1795 if (coro == coro_first) coro_first = coro->next;
1419 1796
1420 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 */
1421} 1812}
1422 1813
1423static int 1814static int
1424coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1815coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1425{ 1816{
1426 struct coro *coro = (struct coro *)mg->mg_ptr; 1817 struct coro *coro = (struct coro *)mg->mg_ptr;
1427 mg->mg_ptr = 0; 1818 mg->mg_ptr = 0;
1428 1819
1429 coro->hv = 0;
1430
1431 if (--coro->refcnt < 0)
1432 {
1433 coro_state_destroy (aTHX_ coro); 1820 coro_state_destroy (aTHX_ coro);
1821 SvREFCNT_dec (coro->on_destroy);
1822 SvREFCNT_dec (coro->status);
1823
1434 Safefree (coro); 1824 Safefree (coro);
1435 }
1436 1825
1437 return 0; 1826 return 0;
1438} 1827}
1439 1828
1440static int 1829static int ecb_cold
1441coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1830coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1442{ 1831{
1443 struct coro *coro = (struct coro *)mg->mg_ptr; 1832 /* called when perl clones the current process the slow way (windows process emulation) */
1444 1833 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1445 ++coro->refcnt; 1834 mg->mg_ptr = 0;
1835 mg->mg_virtual = 0;
1446 1836
1447 return 0; 1837 return 0;
1448} 1838}
1449 1839
1450static MGVTBL coro_state_vtbl = { 1840static MGVTBL coro_state_vtbl = {
… …
1475 TRANSFER (ta, 1); 1865 TRANSFER (ta, 1);
1476} 1866}
1477 1867
1478/** Coro ********************************************************************/ 1868/** Coro ********************************************************************/
1479 1869
1480INLINE void 1870ecb_inline void
1481coro_enq (pTHX_ struct coro *coro) 1871coro_enq (pTHX_ struct coro *coro)
1482{ 1872{
1483 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1873 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1484}
1485 1874
1486INLINE 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 *
1487coro_deq (pTHX) 1883coro_deq (pTHX)
1488{ 1884{
1489 int prio; 1885 int prio;
1490 1886
1491 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1887 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1492 if (AvFILLp (coro_ready [prio]) >= 0) 1888 {
1493 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 }
1494 1898
1495 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;
1496} 1917}
1497 1918
1498static int 1919static int
1499api_ready (pTHX_ SV *coro_sv) 1920api_ready (pTHX_ SV *coro_sv)
1500{ 1921{
1501 struct coro *coro;
1502 SV *sv_hook;
1503 void (*xs_hook)(void);
1504
1505 if (SvROK (coro_sv))
1506 coro_sv = SvRV (coro_sv);
1507
1508 coro = SvSTATE (coro_sv); 1922 struct coro *coro = SvSTATE (coro_sv);
1509 1923
1510 if (coro->flags & CF_READY) 1924 if (coro->flags & CF_READY)
1511 return 0; 1925 return 0;
1512 1926
1513 coro->flags |= CF_READY; 1927 coro->flags |= CF_READY;
1514 1928
1515 sv_hook = coro_nready ? 0 : coro_readyhook;
1516 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1517
1518 coro_enq (aTHX_ coro); 1929 coro_enq (aTHX_ coro);
1519 ++coro_nready;
1520 1930
1521 if (sv_hook) 1931 if (!coro_nready++)
1522 { 1932 if (coroapi.readyhook)
1523 dSP; 1933 coroapi.readyhook ();
1524
1525 ENTER;
1526 SAVETMPS;
1527
1528 PUSHMARK (SP);
1529 PUTBACK;
1530 call_sv (sv_hook, G_DISCARD);
1531 SPAGAIN;
1532
1533 FREETMPS;
1534 LEAVE;
1535 }
1536
1537 if (xs_hook)
1538 xs_hook ();
1539 1934
1540 return 1; 1935 return 1;
1541} 1936}
1542 1937
1543static int 1938static int
1544api_is_ready (pTHX_ SV *coro_sv) 1939api_is_ready (pTHX_ SV *coro_sv)
1545{ 1940{
1546 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1941 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1547} 1942}
1548 1943
1549INLINE void 1944/* expects to own a reference to next->hv */
1945ecb_inline void
1550prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1946prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1551{ 1947{
1552 SV *prev_sv, *next_sv;
1553
1554 for (;;)
1555 {
1556 next_sv = coro_deq (aTHX);
1557
1558 /* nothing to schedule: call the idle handler */
1559 if (expect_false (!next_sv))
1560 {
1561 dSP;
1562
1563 ENTER;
1564 SAVETMPS;
1565
1566 PUSHMARK (SP);
1567 PUTBACK;
1568 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1569 SPAGAIN;
1570
1571 FREETMPS;
1572 LEAVE;
1573 continue;
1574 }
1575
1576 ta->next = SvSTATE_hv (next_sv);
1577
1578 /* cannot transfer to destroyed coros, skip and look for next */
1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1580 {
1581 SvREFCNT_dec (next_sv);
1582 /* coro_nready has already been taken care of by destroy */
1583 continue;
1584 }
1585
1586 --coro_nready;
1587 break;
1588 }
1589
1590 /* free this only after the transfer */
1591 prev_sv = SvRV (coro_current); 1948 SV *prev_sv = SvRV (coro_current);
1949
1592 ta->prev = SvSTATE_hv (prev_sv); 1950 ta->prev = SvSTATE_hv (prev_sv);
1951 ta->next = next;
1952
1593 TRANSFER_CHECK (*ta); 1953 TRANSFER_CHECK (*ta);
1594 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1954
1595 ta->next->flags &= ~CF_READY;
1596 SvRV_set (coro_current, next_sv); 1955 SvRV_set (coro_current, (SV *)next->hv);
1597 1956
1598 free_coro_mortal (aTHX); 1957 free_coro_mortal (aTHX);
1599 coro_mortal = prev_sv; 1958 coro_mortal = prev_sv;
1600} 1959}
1601 1960
1602INLINE 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
1603prepare_cede (pTHX_ struct coro_transfer_args *ta) 2032prepare_cede (pTHX_ struct coro_transfer_args *ta)
1604{ 2033{
1605 api_ready (aTHX_ coro_current); 2034 api_ready (aTHX_ coro_current);
1606 prepare_schedule (aTHX_ ta); 2035 prepare_schedule (aTHX_ ta);
1607} 2036}
1608 2037
1609INLINE void 2038ecb_inline void
1610prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2039prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1611{ 2040{
1612 SV *prev = SvRV (coro_current); 2041 SV *prev = SvRV (coro_current);
1613 2042
1614 if (coro_nready) 2043 if (coro_nready)
… …
1627 2056
1628 prepare_schedule (aTHX_ &ta); 2057 prepare_schedule (aTHX_ &ta);
1629 TRANSFER (ta, 1); 2058 TRANSFER (ta, 1);
1630} 2059}
1631 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
1632static int 2071static int
1633api_cede (pTHX) 2072api_cede (pTHX)
1634{ 2073{
1635 struct coro_transfer_args ta; 2074 struct coro_transfer_args ta;
1636 2075
1637 prepare_cede (aTHX_ &ta); 2076 prepare_cede (aTHX_ &ta);
1638 2077
1639 if (expect_true (ta.prev != ta.next)) 2078 if (ecb_expect_true (ta.prev != ta.next))
1640 { 2079 {
1641 TRANSFER (ta, 1); 2080 TRANSFER (ta, 1);
1642 return 1; 2081 return 1;
1643 } 2082 }
1644 else 2083 else
… …
1663static void 2102static void
1664api_trace (pTHX_ SV *coro_sv, int flags) 2103api_trace (pTHX_ SV *coro_sv, int flags)
1665{ 2104{
1666 struct coro *coro = SvSTATE (coro_sv); 2105 struct coro *coro = SvSTATE (coro_sv);
1667 2106
2107 if (coro->flags & CF_RUNNING)
2108 croak ("cannot enable tracing on a running coroutine, caught");
2109
1668 if (flags & CC_TRACE) 2110 if (flags & CC_TRACE)
1669 { 2111 {
1670 if (!coro->cctx) 2112 if (!coro->cctx)
1671 coro->cctx = cctx_new_run (); 2113 coro->cctx = cctx_new_run ();
1672 else if (!(coro->cctx->flags & CC_TRACE)) 2114 else if (!(coro->cctx->flags & CC_TRACE))
1673 croak ("cannot enable tracing on coroutine with custom stack,"); 2115 croak ("cannot enable tracing on coroutine with custom stack, caught");
1674 2116
1675 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2117 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1676 } 2118 }
1677 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2119 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1678 { 2120 {
… …
1681 if (coro->flags & CF_RUNNING) 2123 if (coro->flags & CF_RUNNING)
1682 PL_runops = RUNOPS_DEFAULT; 2124 PL_runops = RUNOPS_DEFAULT;
1683 else 2125 else
1684 coro->slot->runops = RUNOPS_DEFAULT; 2126 coro->slot->runops = RUNOPS_DEFAULT;
1685 } 2127 }
2128}
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;
1686} 2577}
1687 2578
1688/*****************************************************************************/ 2579/*****************************************************************************/
1689/* schedule-like-function opcode (SLF) */ 2580/* schedule-like-function opcode (SLF) */
1690 2581
… …
1714 2605
1715 RETURNOP (slf_restore.op_first); 2606 RETURNOP (slf_restore.op_first);
1716} 2607}
1717 2608
1718static void 2609static void
1719slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1720{
1721 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1722}
1723
1724static void
1725slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1726{
1727 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1728
1729 frame->prepare = slf_prepare_set_stacklevel;
1730 frame->check = slf_check_nop;
1731 frame->data = (void *)SvIV (arg [0]);
1732}
1733
1734static void
1735slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2610slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1736{ 2611{
1737 SV **arg = (SV **)slf_frame.data; 2612 SV **arg = (SV **)slf_frame.data;
1738 2613
1739 prepare_transfer (aTHX_ ta, arg [0], arg [1]); 2614 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
… …
1756 frame->prepare = prepare_schedule; 2631 frame->prepare = prepare_schedule;
1757 frame->check = slf_check_nop; 2632 frame->check = slf_check_nop;
1758} 2633}
1759 2634
1760static void 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
1761slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2664slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1762{ 2665{
1763 frame->prepare = prepare_cede; 2666 frame->prepare = prepare_cede;
1764 frame->check = slf_check_nop; 2667 frame->check = slf_check_nop;
1765} 2668}
… …
1769{ 2672{
1770 frame->prepare = prepare_cede_notself; 2673 frame->prepare = prepare_cede_notself;
1771 frame->check = slf_check_nop; 2674 frame->check = slf_check_nop;
1772} 2675}
1773 2676
1774/* we hijack an hopefully unused CV flag for our purposes */ 2677/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
1775#define CVf_SLF 0x4000 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}
1776 2695
1777/* 2696/*
1778 * these not obviously related functions are all rolled into one 2697 * these not obviously related functions are all rolled into one
1779 * function to increase chances that they all will call transfer with the same 2698 * function to increase chances that they all will call transfer with the same
1780 * stack offset 2699 * stack offset
… …
1786 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2705 I32 checkmark; /* mark SP to see how many elements check has pushed */
1787 2706
1788 /* set up the slf frame, unless it has already been set-up */ 2707 /* set up the slf frame, unless it has already been set-up */
1789 /* the latter happens when a new coro has been started */ 2708 /* the latter happens when a new coro has been started */
1790 /* or when a new cctx was attached to an existing coroutine */ 2709 /* or when a new cctx was attached to an existing coroutine */
1791 if (expect_true (!slf_frame.prepare)) 2710 if (ecb_expect_true (!slf_frame.prepare))
1792 { 2711 {
1793 /* first iteration */ 2712 /* first iteration */
1794 dSP; 2713 dSP;
1795 SV **arg = PL_stack_base + TOPMARK + 1; 2714 SV **arg = PL_stack_base + TOPMARK + 1;
1796 int items = SP - arg; /* args without function object */ 2715 int items = SP - arg; /* args without function object */
… …
1836 } 2755 }
1837 while (slf_frame.check (aTHX_ &slf_frame)); 2756 while (slf_frame.check (aTHX_ &slf_frame));
1838 2757
1839 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2758 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1840 2759
1841 /* return value handling - mostly like entersub */
1842 {
1843 dSP;
1844 SV **bot = PL_stack_base + checkmark;
1845 int gimme = GIMME_V;
1846
1847 /* make sure we put something on the stack in scalar context */
1848 if (gimme == G_SCALAR)
1849 {
1850 if (sp == bot)
1851 XPUSHs (&PL_sv_undef);
1852
1853 SP = bot + 1;
1854 }
1855
1856 PUTBACK;
1857 }
1858
1859 /* exception handling */ 2760 /* exception handling */
1860 if (expect_false (coro_throw)) 2761 if (ecb_expect_false (CORO_THROW))
1861 { 2762 {
1862 SV *exception = sv_2mortal (coro_throw); 2763 SV *exception = sv_2mortal (CORO_THROW);
1863 2764
1864 coro_throw = 0; 2765 CORO_THROW = 0;
1865 sv_setsv (ERRSV, exception); 2766 sv_setsv (ERRSV, exception);
1866 croak (0); 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;
1867 } 2786 }
1868 2787
1869 return NORMAL; 2788 return NORMAL;
1870} 2789}
1871 2790
… …
1899 if (PL_op->op_flags & OPf_STACKED) 2818 if (PL_op->op_flags & OPf_STACKED)
1900 { 2819 {
1901 if (items > slf_arga) 2820 if (items > slf_arga)
1902 { 2821 {
1903 slf_arga = items; 2822 slf_arga = items;
1904 free (slf_argv); 2823 Safefree (slf_argv);
1905 slf_argv = malloc (slf_arga * sizeof (SV *)); 2824 New (0, slf_argv, slf_arga, SV *);
1906 } 2825 }
1907 2826
1908 slf_argc = items; 2827 slf_argc = items;
1909 2828
1910 for (i = 0; i < items; ++i) 2829 for (i = 0; i < items; ++i)
… …
1912 } 2831 }
1913 else 2832 else
1914 slf_argc = 0; 2833 slf_argc = 0;
1915 2834
1916 PL_op->op_ppaddr = pp_slf; 2835 PL_op->op_ppaddr = pp_slf;
1917 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2836 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1918 2837
1919 PL_op = (OP *)&slf_restore; 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);
1920} 2978}
1921 2979
1922/*****************************************************************************/ 2980/*****************************************************************************/
1923/* PerlIO::cede */ 2981/* PerlIO::cede */
1924 2982
… …
1926{ 2984{
1927 PerlIOBuf base; 2985 PerlIOBuf base;
1928 NV next, every; 2986 NV next, every;
1929} PerlIOCede; 2987} PerlIOCede;
1930 2988
1931static IV 2989static IV ecb_cold
1932PerlIOCede_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)
1933{ 2991{
1934 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2992 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1935 2993
1936 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2994 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1937 self->next = nvtime () + self->every; 2995 self->next = nvtime () + self->every;
1938 2996
1939 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2997 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1940} 2998}
1941 2999
1942static SV * 3000static SV * ecb_cold
1943PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3001PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1944{ 3002{
1945 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3003 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1946 3004
1947 return newSVnv (self->every); 3005 return newSVnv (self->every);
… …
1993 PerlIOBuf_get_cnt, 3051 PerlIOBuf_get_cnt,
1994 PerlIOBuf_set_ptrcnt, 3052 PerlIOBuf_set_ptrcnt,
1995}; 3053};
1996 3054
1997/*****************************************************************************/ 3055/*****************************************************************************/
3056/* Coro::Semaphore & Coro::Signal */
3057
3058static SV *
3059coro_waitarray_new (pTHX_ int count)
3060{
3061 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3062 AV *av = newAV ();
3063 SV **ary;
3064
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);
3078
3079 return newRV_noinc ((SV *)av);
3080}
3081
1998/* Coro::Semaphore */ 3082/* semaphore */
1999 3083
2000static void 3084static void
2001coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 3085coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2002{ 3086{
2003 SV *count_sv = AvARRAY (av)[0]; 3087 SV *count_sv = AvARRAY (av)[0];
… …
2015 AvARRAY (av)[0] = AvARRAY (av)[1]; 3099 AvARRAY (av)[0] = AvARRAY (av)[1];
2016 AvARRAY (av)[1] = count_sv; 3100 AvARRAY (av)[1] = count_sv;
2017 cb = av_shift (av); 3101 cb = av_shift (av);
2018 3102
2019 if (SvOBJECT (cb)) 3103 if (SvOBJECT (cb))
3104 {
2020 api_ready (aTHX_ cb); 3105 api_ready (aTHX_ cb);
2021 else 3106 --count;
2022 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 }
2023 3116
2024 SvREFCNT_dec (cb); 3117 SvREFCNT_dec_NN (cb);
2025
2026 --count;
2027 } 3118 }
2028} 3119}
2029 3120
2030static void 3121static void
2031coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3122coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2032{ 3123{
2033 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3124 /* call $sem->adjust (0) to possibly wake up some other waiters */
2034 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3125 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2035} 3126}
2036 3127
2037static int 3128static int
2038slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3129slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2039{ 3130{
2040 AV *av = (AV *)frame->data; 3131 AV *av = (AV *)frame->data;
2041 SV *count_sv = AvARRAY (av)[0]; 3132 SV *count_sv = AvARRAY (av)[0];
3133 SV *coro_hv = SvRV (coro_current);
2042 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 }
2043 if (SvIVX (count_sv) > 0) 3145 else if (SvIVX (count_sv) > 0)
2044 { 3146 {
2045 SvSTATE_current->on_destroy = 0; 3147 if (acquire)
2046 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
2047 return 0; 3152 return 0;
2048 } 3153 }
2049 else 3154 else
2050 { 3155 {
2051 int i; 3156 int i;
2052 /* 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 */
2053 /* 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 */
2054 /* this avoids some degenerate memory usage cases */ 3159 /* this avoids some degenerate memory usage cases */
2055 3160 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2056 for (i = 1; i <= AvFILLp (av); ++i)
2057 if (AvARRAY (av)[i] == SvRV (coro_current)) 3161 if (AvARRAY (av)[i] == coro_hv)
2058 return 1; 3162 return 1;
2059 3163
2060 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3164 av_push (av, SvREFCNT_inc (coro_hv));
2061 return 1; 3165 return 1;
2062 } 3166 }
2063} 3167}
2064 3168
2065static 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
2066slf_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)
2067{ 3183{
2068 AV *av = (AV *)SvRV (arg [0]); 3184 AV *av = (AV *)SvRV (arg [0]);
2069 3185
2070 if (SvIVX (AvARRAY (av)[0]) > 0) 3186 if (SvIVX (AvARRAY (av)[0]) > 0)
2071 { 3187 {
2072 frame->data = (void *)av; 3188 frame->data = (void *)av;
2073 frame->prepare = prepare_nop; 3189 frame->prepare = prepare_nop;
2074 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2075 } 3190 }
2076 else 3191 else
2077 { 3192 {
2078 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3193 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2079 3194
2080 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3195 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2081 frame->prepare = prepare_schedule; 3196 frame->prepare = prepare_schedule;
2082
2083 /* to avoid race conditions when a woken-up coro gets terminated */ 3197 /* to avoid race conditions when a woken-up coro gets terminated */
2084 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3198 /* we arrange for a temporary on_destroy that calls adjust (0) */
2085 assert (!SvSTATE_current->on_destroy);//D
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3199 frame->destroy = coro_semaphore_destroy;
2087 } 3200 }
3201}
2088 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);
2089 frame->check = slf_check_semaphore_down; 3207 frame->check = slf_check_semaphore_down;
2090
2091} 3208}
2092 3209
2093/*****************************************************************************/ 3210static void
2094/* gensub: simple closure generation utility */ 3211slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2095
2096#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2097
2098/* create a closure from XS, returns a code reference */
2099/* the arg can be accessed via GENSUB_ARG from the callback */
2100/* the callback must use dXSARGS/XSRETURN */
2101static SV *
2102gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2103{ 3212{
2104 CV *cv = (CV *)newSV (0); 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]);
2105 3218
2106 sv_upgrade ((SV *)cv, SVt_PVCV); 3219 av_push (av, SvREFCNT_inc_NN (cb_cv));
2107 3220
2108 CvANON_on (cv); 3221 if (SvIVX (AvARRAY (av)[0]) > 0)
2109 CvISXSUB_on (cv); 3222 coro_semaphore_adjust (aTHX_ av, 0);
2110 CvXSUB (cv) = xsub;
2111 GENSUB_ARG = arg;
2112 3223
2113 return newRV_noinc ((SV *)cv); 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 }
2114} 3312}
2115 3313
2116/*****************************************************************************/ 3314/*****************************************************************************/
2117/* Coro::AIO */ 3315/* Coro::AIO */
2118 3316
… …
2129 3327
2130static void 3328static void
2131coro_aio_callback (pTHX_ CV *cv) 3329coro_aio_callback (pTHX_ CV *cv)
2132{ 3330{
2133 dXSARGS; 3331 dXSARGS;
2134 AV *state = (AV *)GENSUB_ARG; 3332 AV *state = (AV *)S_GENSUB_ARG;
2135 SV *coro = av_pop (state); 3333 SV *coro = av_pop (state);
2136 SV *data_sv = newSV (sizeof (struct io_state)); 3334 SV *data_sv = newSV (sizeof (struct io_state));
2137 3335
2138 av_extend (state, items); 3336 av_extend (state, items - 1);
2139 3337
2140 sv_upgrade (data_sv, SVt_PV); 3338 sv_upgrade (data_sv, SVt_PV);
2141 SvCUR_set (data_sv, sizeof (struct io_state)); 3339 SvCUR_set (data_sv, sizeof (struct io_state));
2142 SvPOK_only (data_sv); 3340 SvPOK_only (data_sv);
2143 3341
… …
2159 } 3357 }
2160 3358
2161 av_push (state, data_sv); 3359 av_push (state, data_sv);
2162 3360
2163 api_ready (aTHX_ coro); 3361 api_ready (aTHX_ coro);
2164 SvREFCNT_dec (coro); 3362 SvREFCNT_dec_NN (coro);
2165 SvREFCNT_dec ((AV *)state); 3363 SvREFCNT_dec_NN ((AV *)state);
2166} 3364}
2167 3365
2168static int 3366static int
2169slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3367slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2170{ 3368{
2171 AV *state = (AV *)frame->data; 3369 AV *state = (AV *)frame->data;
2172 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
2173 /* one element that is an RV? repeat! */ 3377 /* one element that is an RV? repeat! */
2174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3378 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2175 return 1; 3379 return 1;
2176 3380
2177 /* restore status */ 3381 /* restore status */
2178 { 3382 {
2179 SV *data_sv = av_pop (state); 3383 SV *data_sv = av_pop (state);
… …
2182 errno = data->errorno; 3386 errno = data->errorno;
2183 PL_laststype = data->laststype; 3387 PL_laststype = data->laststype;
2184 PL_laststatval = data->laststatval; 3388 PL_laststatval = data->laststatval;
2185 PL_statcache = data->statcache; 3389 PL_statcache = data->statcache;
2186 3390
2187 SvREFCNT_dec (data_sv); 3391 SvREFCNT_dec_NN (data_sv);
2188 } 3392 }
2189 3393
2190 /* push result values */ 3394 /* push result values */
2191 { 3395 {
2192 dSP; 3396 dSP;
… …
2218 dSP; 3422 dSP;
2219 3423
2220 static SV *prio_cv; 3424 static SV *prio_cv;
2221 static SV *prio_sv; 3425 static SV *prio_sv;
2222 3426
2223 if (expect_false (!prio_cv)) 3427 if (ecb_expect_false (!prio_cv))
2224 { 3428 {
2225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3429 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2226 prio_sv = newSViv (0); 3430 prio_sv = newSViv (0);
2227 } 3431 }
2228 3432
… …
2247 3451
2248 for (i = 0; i < items; ++i) 3452 for (i = 0; i < items; ++i)
2249 PUSHs (arg [i]); 3453 PUSHs (arg [i]);
2250 3454
2251 /* now push the callback closure */ 3455 /* now push the callback closure */
2252 PUSHs (sv_2mortal (gensub (coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3456 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2253 3457
2254 /* now call the AIO function - we assume our request is uncancelable */ 3458 /* now call the AIO function - we assume our request is uncancelable */
2255 PUTBACK; 3459 PUTBACK;
2256 call_sv ((SV *)req, G_VOID | G_DISCARD); 3460 call_sv ((SV *)req, G_VOID | G_DISCARD);
2257 } 3461 }
2258 3462
2259 /* now that the requets is going, we loop toll we have a result */ 3463 /* now that the request is going, we loop till we have a result */
2260 frame->data = (void *)state; 3464 frame->data = (void *)state;
2261 frame->prepare = prepare_schedule; 3465 frame->prepare = prepare_schedule;
2262 frame->check = slf_check_aio_req; 3466 frame->check = slf_check_aio_req;
2263} 3467}
2264 3468
2265static void 3469static void
2266coro_aio_req_xs (pTHX_ CV *cv) 3470coro_aio_req_xs (pTHX_ CV *cv)
2267{ 3471{
2268 dVAR;
2269 dXSARGS; 3472 dXSARGS;
2270 3473
2271 CORO_EXECUTE_SLF_XS (slf_init_aio_req); 3474 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2272 3475
2273 XSRETURN_EMPTY; 3476 XSRETURN_EMPTY;
2274} 3477}
2275 3478
2276/*****************************************************************************/ 3479/*****************************************************************************/
2277 3480
3481#if CORO_CLONE
3482# include "clone.c"
3483#endif
3484
3485/*****************************************************************************/
3486
3487static SV *
3488coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3489{
3490 SV *coro_sv;
3491 struct coro *coro;
3492 MAGIC *mg;
3493 HV *hv;
3494 SV *cb;
3495 int i;
3496
3497 if (argc > 0)
3498 {
3499 cb = s_get_cv_croak (argv [0]);
3500
3501 if (!is_coro)
3502 {
3503 if (CvISXSUB (cb))
3504 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3505
3506 if (!CvROOT (cb))
3507 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3508 }
3509 }
3510
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 if (map_base == (char *)MAP_FAILED)
3591 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3592
3593 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3594
3595 load_perl_slots = (load_save_perl_slots_type)map_base;
3596 memcpy (map_base, load_ptr, load_len);
3597
3598 map_base += (load_len + 15) & ~15;
3599
3600 save_perl_slots = (load_save_perl_slots_type)map_base;
3601 memcpy (map_base, save_ptr, save_len);
3602
3603 /* we are good citizens and try to make the page read-only, so the evil evil */
3604 /* hackers might have it a bit more difficult */
3605 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3606
3607 PUTBACK;
3608 eval_pv ("undef &Coro::State::_jit", 1);
3609}
3610
3611#endif
3612
2278MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3613MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2279 3614
2280PROTOTYPES: DISABLE 3615PROTOTYPES: DISABLE
2281 3616
2282BOOT: 3617BOOT:
2283{ 3618{
3619#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3620#include "state.h"
2284#ifdef USE_ITHREADS 3621#ifdef USE_ITHREADS
2285# if CORO_PTHREAD 3622# if CORO_PTHREAD
2286 coro_thx = PERL_GET_CONTEXT; 3623 coro_thx = PERL_GET_CONTEXT;
2287# endif 3624# endif
2288#endif 3625#endif
2289 BOOT_PAGESIZE; 3626 /* perl defines these to check for existance first, but why it doesn't */
3627 /* just create them one at init time is not clear to me, except for */
3628 /* programs trying to delete them, but... */
3629 /* anyway, we declare this as invalid and make sure they are initialised here */
3630 DEFSV;
3631 ERRSV;
3632
3633 cctx_current = cctx_new_empty ();
2290 3634
2291 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3635 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2292 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3636 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2293 3637
2294 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3638 {
2295 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3639 /*
2296 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3640 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3641 * by coro_sig_vtbl in hash values.
3642 */
3643 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3644
3645 /* this only works if perl doesn't have a vtbl for %SIG */
3646 assert (!mg->mg_virtual);
3647
3648 /*
3649 * The irony is that the perl API itself asserts that mg_virtual
3650 * must be non-const, yet perl5porters insisted on marking their
3651 * vtbls as read-only, just to thwart perl modules from patching
3652 * them.
3653 */
3654 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3655 mg->mg_flags |= MGf_COPY;
3656
3657 coro_sigelem_vtbl = PL_vtbl_sigelem;
3658 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3659 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3660 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3661 }
2297 3662
2298 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2299 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3663 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2300 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3664 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2301 3665
2302 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3666 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
2303 3667
… …
2314 3678
2315 { 3679 {
2316 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3680 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2317 3681
2318 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3682 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2319 hv_store_ent (PL_custom_op_names, slf, 3683 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2320 newSVpv ("coro_slf", 0), 0);
2321 3684
2322 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3685 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2323 hv_store_ent (PL_custom_op_descs, slf, 3686 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2324 newSVpv ("coro schedule like function", 0), 0);
2325 } 3687 }
2326 3688
2327 coroapi.ver = CORO_API_VERSION; 3689 coroapi.ver = CORO_API_VERSION;
2328 coroapi.rev = CORO_API_REVISION; 3690 coroapi.rev = CORO_API_REVISION;
2329 3691
… …
2334 coroapi.prepare_nop = prepare_nop; 3696 coroapi.prepare_nop = prepare_nop;
2335 coroapi.prepare_schedule = prepare_schedule; 3697 coroapi.prepare_schedule = prepare_schedule;
2336 coroapi.prepare_cede = prepare_cede; 3698 coroapi.prepare_cede = prepare_cede;
2337 coroapi.prepare_cede_notself = prepare_cede_notself; 3699 coroapi.prepare_cede_notself = prepare_cede_notself;
2338 3700
2339 { 3701 time_init (aTHX);
2340 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2341 3702
2342 if (!svp) croak ("Time::HiRes is required");
2343 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2344
2345 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2346 }
2347
2348 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3703 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3704#if CORO_JIT
3705 PUTBACK;
3706 jit_init (aTHX);
3707 SPAGAIN;
3708#endif
2349} 3709}
2350 3710
2351SV * 3711SV *
2352new (char *klass, ...) 3712new (SV *klass, ...)
3713 ALIAS:
3714 Coro::new = 1
2353 CODE: 3715 CODE:
2354{ 3716 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2355 struct coro *coro; 3717 OUTPUT:
2356 MAGIC *mg;
2357 HV *hv;
2358 int i;
2359
2360 Newz (0, coro, 1, struct coro);
2361 coro->args = newAV ();
2362 coro->flags = CF_NEW;
2363
2364 if (coro_first) coro_first->prev = coro;
2365 coro->next = coro_first;
2366 coro_first = coro;
2367
2368 coro->hv = hv = newHV ();
2369 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2370 mg->mg_flags |= MGf_DUP;
2371 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2372
2373 av_extend (coro->args, items - 1);
2374 for (i = 1; i < items; i++)
2375 av_push (coro->args, newSVsv (ST (i)));
2376}
2377 OUTPUT:
2378 RETVAL 3718 RETVAL
2379
2380void
2381_set_stacklevel (...)
2382 CODE:
2383 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2384 3719
2385void 3720void
2386transfer (...) 3721transfer (...)
2387 PROTOTYPE: $$ 3722 PROTOTYPE: $$
2388 CODE: 3723 CODE:
2389 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3724 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2390 3725
2391bool 3726SV *
2392_destroy (SV *coro_sv) 3727clone (Coro::State coro)
2393 CODE: 3728 CODE:
2394 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3729{
3730#if CORO_CLONE
3731 struct coro *ncoro = coro_clone (aTHX_ coro);
3732 MAGIC *mg;
3733 /* TODO: too much duplication */
3734 ncoro->hv = newHV ();
3735 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3736 mg->mg_flags |= MGf_DUP;
3737 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3738#else
3739 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3740#endif
3741}
2395 OUTPUT: 3742 OUTPUT:
2396 RETVAL 3743 RETVAL
2397
2398void
2399_exit (int code)
2400 PROTOTYPE: $
2401 CODE:
2402 _exit (code);
2403 3744
2404int 3745int
2405cctx_stacksize (int new_stacksize = 0) 3746cctx_stacksize (int new_stacksize = 0)
2406 PROTOTYPE: ;$ 3747 PROTOTYPE: ;$
2407 CODE: 3748 CODE:
… …
2443void 3784void
2444list () 3785list ()
2445 PROTOTYPE: 3786 PROTOTYPE:
2446 PPCODE: 3787 PPCODE:
2447{ 3788{
2448 struct coro *coro; 3789 struct coro *coro;
2449 for (coro = coro_first; coro; coro = coro->next) 3790 for (coro = coro_first; coro; coro = coro->next)
2450 if (coro->hv) 3791 if (coro->hv)
2451 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3792 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2452} 3793}
2453 3794
… …
2457 eval = 1 3798 eval = 1
2458 CODE: 3799 CODE:
2459{ 3800{
2460 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3801 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2461 { 3802 {
2462 struct coro temp; 3803 struct coro *current = SvSTATE_current;
3804 struct CoroSLF slf_save;
2463 3805
2464 if (!(coro->flags & CF_RUNNING)) 3806 if (current != coro)
2465 { 3807 {
2466 PUTBACK; 3808 PUTBACK;
2467 save_perl (aTHX_ &temp); 3809 save_perl (aTHX_ current);
2468 load_perl (aTHX_ coro); 3810 load_perl (aTHX_ coro);
3811 /* the coro is most likely in an active SLF call.
3812 * while not strictly required (the code we execute is
3813 * not allowed to call any SLF functions), it's cleaner
3814 * to reinitialise the slf_frame and restore it later.
3815 * This might one day allow us to actually do SLF calls
3816 * from code executed here.
3817 */
3818 slf_save = slf_frame;
3819 slf_frame.prepare = 0;
3820 SPAGAIN;
2469 } 3821 }
2470 3822
2471 {
2472 dSP;
2473 ENTER;
2474 SAVETMPS;
2475 PUTBACK;
2476 PUSHSTACK; 3823 PUSHSTACK;
3824
2477 PUSHMARK (SP); 3825 PUSHMARK (SP);
3826 PUTBACK;
2478 3827
2479 if (ix) 3828 if (ix)
2480 eval_sv (coderef, 0); 3829 eval_sv (coderef, 0);
2481 else 3830 else
2482 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3831 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2483 3832
2484 POPSTACK; 3833 POPSTACK;
2485 SPAGAIN; 3834 SPAGAIN;
2486 FREETMPS;
2487 LEAVE;
2488 PUTBACK;
2489 }
2490 3835
2491 if (!(coro->flags & CF_RUNNING)) 3836 if (current != coro)
2492 { 3837 {
3838 PUTBACK;
3839 slf_frame = slf_save;
2493 save_perl (aTHX_ coro); 3840 save_perl (aTHX_ coro);
2494 load_perl (aTHX_ &temp); 3841 load_perl (aTHX_ current);
2495 SPAGAIN; 3842 SPAGAIN;
2496 } 3843 }
2497 } 3844 }
2498} 3845}
2499 3846
… …
2502 PROTOTYPE: $ 3849 PROTOTYPE: $
2503 ALIAS: 3850 ALIAS:
2504 is_ready = CF_READY 3851 is_ready = CF_READY
2505 is_running = CF_RUNNING 3852 is_running = CF_RUNNING
2506 is_new = CF_NEW 3853 is_new = CF_NEW
2507 is_destroyed = CF_DESTROYED 3854 is_destroyed = CF_ZOMBIE
3855 is_zombie = CF_ZOMBIE
3856 is_suspended = CF_SUSPENDED
2508 CODE: 3857 CODE:
2509 RETVAL = boolSV (coro->flags & ix); 3858 RETVAL = boolSV (coro->flags & ix);
2510 OUTPUT: 3859 OUTPUT:
2511 RETVAL 3860 RETVAL
2512 3861
2513void 3862void
2514throw (Coro::State self, SV *throw = &PL_sv_undef) 3863throw (SV *self, SV *exception = &PL_sv_undef)
2515 PROTOTYPE: $;$ 3864 PROTOTYPE: $;$
2516 CODE: 3865 CODE:
2517{ 3866{
3867 struct coro *coro = SvSTATE (self);
2518 struct coro *current = SvSTATE_current; 3868 struct coro *current = SvSTATE_current;
2519 SV **throwp = self == current ? &coro_throw : &self->throw; 3869 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2520 SvREFCNT_dec (*throwp); 3870 SvREFCNT_dec (*exceptionp);
2521 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3871 SvGETMAGIC (exception);
3872 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3873
3874 api_ready (aTHX_ self);
2522} 3875}
2523 3876
2524void 3877void
2525api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3878api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2526 PROTOTYPE: $;$ 3879 PROTOTYPE: $;$
… …
2528 3881
2529SV * 3882SV *
2530has_cctx (Coro::State coro) 3883has_cctx (Coro::State coro)
2531 PROTOTYPE: $ 3884 PROTOTYPE: $
2532 CODE: 3885 CODE:
2533 RETVAL = boolSV (!!coro->cctx); 3886 /* maybe manage the running flag differently */
3887 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2534 OUTPUT: 3888 OUTPUT:
2535 RETVAL 3889 RETVAL
2536 3890
2537int 3891int
2538is_traced (Coro::State coro) 3892is_traced (Coro::State coro)
… …
2558 3912
2559void 3913void
2560force_cctx () 3914force_cctx ()
2561 PROTOTYPE: 3915 PROTOTYPE:
2562 CODE: 3916 CODE:
2563 SvSTATE_current->cctx->idle_sp = 0; 3917 cctx_current->idle_sp = 0;
2564 3918
2565void 3919void
2566swap_defsv (Coro::State self) 3920swap_defsv (Coro::State self)
2567 PROTOTYPE: $ 3921 PROTOTYPE: $
2568 ALIAS: 3922 ALIAS:
… …
2576 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3930 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2577 3931
2578 SV *tmp = *src; *src = *dst; *dst = tmp; 3932 SV *tmp = *src; *src = *dst; *dst = tmp;
2579 } 3933 }
2580 3934
3935void
3936cancel (Coro::State self)
3937 CODE:
3938 coro_state_destroy (aTHX_ self);
3939
3940SV *
3941enable_times (int enabled = enable_times)
3942 CODE:
3943{
3944 RETVAL = boolSV (enable_times);
3945
3946 if (enabled != enable_times)
3947 {
3948 enable_times = enabled;
3949
3950 coro_times_update ();
3951 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3952 }
3953}
3954 OUTPUT:
3955 RETVAL
3956
3957void
3958times (Coro::State self)
3959 PPCODE:
3960{
3961 struct coro *current = SvSTATE (coro_current);
3962
3963 if (ecb_expect_false (current == self))
3964 {
3965 coro_times_update ();
3966 coro_times_add (SvSTATE (coro_current));
3967 }
3968
3969 EXTEND (SP, 2);
3970 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3971 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3972
3973 if (ecb_expect_false (current == self))
3974 coro_times_sub (SvSTATE (coro_current));
3975}
3976
3977void
3978swap_sv (Coro::State coro, SV *sva, SV *svb)
3979 CODE:
3980{
3981 struct coro *current = SvSTATE_current;
3982 AV *swap_sv;
3983 int i;
3984
3985 sva = SvRV (sva);
3986 svb = SvRV (svb);
3987
3988 if (current == coro)
3989 SWAP_SVS_LEAVE (current);
3990
3991 if (!coro->swap_sv)
3992 coro->swap_sv = newAV ();
3993
3994 swap_sv = coro->swap_sv;
3995
3996 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
3997 {
3998 SV *a = AvARRAY (swap_sv)[i ];
3999 SV *b = AvARRAY (swap_sv)[i + 1];
4000
4001 if (a == sva && b == svb)
4002 {
4003 SvREFCNT_dec_NN (a);
4004 SvREFCNT_dec_NN (b);
4005
4006 for (; i <= AvFILLp (swap_sv) - 2; i++)
4007 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4008
4009 AvFILLp (swap_sv) -= 2;
4010
4011 goto removed;
4012 }
4013 }
4014
4015 av_push (swap_sv, SvREFCNT_inc_NN (sva));
4016 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4017
4018 removed:
4019
4020 if (current == coro)
4021 SWAP_SVS_ENTER (current);
4022}
4023
2581 4024
2582MODULE = Coro::State PACKAGE = Coro 4025MODULE = Coro::State PACKAGE = Coro
2583 4026
2584BOOT: 4027BOOT:
2585{ 4028{
2586 int i; 4029 if (SVt_LAST > 32)
4030 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2587 4031
2588 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2589 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4032 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2590 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4033 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2591 4034 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2592 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 4035 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2593 SvREADONLY_on (coro_current); 4036 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
4037 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
4038 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
4039 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
4040
4041 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
4042 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
4043 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
4044 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2594 4045
2595 coro_stash = gv_stashpv ("Coro", TRUE); 4046 coro_stash = gv_stashpv ("Coro", TRUE);
2596 4047
2597 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4048 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2598 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4049 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2599 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4050 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2600 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4051 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2601 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4052 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2602 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4053 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2603
2604 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2605 coro_ready[i] = newAV ();
2606 4054
2607 { 4055 {
2608 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4056 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2609 4057
2610 coroapi.schedule = api_schedule; 4058 coroapi.schedule = api_schedule;
4059 coroapi.schedule_to = api_schedule_to;
2611 coroapi.cede = api_cede; 4060 coroapi.cede = api_cede;
2612 coroapi.cede_notself = api_cede_notself; 4061 coroapi.cede_notself = api_cede_notself;
2613 coroapi.ready = api_ready; 4062 coroapi.ready = api_ready;
2614 coroapi.is_ready = api_is_ready; 4063 coroapi.is_ready = api_is_ready;
2615 coroapi.nready = coro_nready; 4064 coroapi.nready = coro_nready;
2616 coroapi.current = coro_current; 4065 coroapi.current = coro_current;
2617 4066
4067 coroapi.enterleave_hook = api_enterleave_hook;
4068 coroapi.enterleave_unhook = api_enterleave_unhook;
4069 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4070
2618 GCoroAPI = &coroapi; 4071 /*GCoroAPI = &coroapi;*/
2619 sv_setiv (sv, (IV)&coroapi); 4072 sv_setiv (sv, (IV)&coroapi);
2620 SvREADONLY_on (sv); 4073 SvREADONLY_on (sv);
2621 } 4074 }
2622} 4075}
4076
4077SV *
4078async (...)
4079 PROTOTYPE: &@
4080 CODE:
4081 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4082 api_ready (aTHX_ RETVAL);
4083 OUTPUT:
4084 RETVAL
4085
4086void
4087_destroy (Coro::State coro)
4088 CODE:
4089 /* used by the manager thread */
4090 coro_state_destroy (aTHX_ coro);
4091
4092void
4093on_destroy (Coro::State coro, SV *cb)
4094 CODE:
4095 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4096
4097void
4098join (...)
4099 CODE:
4100 CORO_EXECUTE_SLF_XS (slf_init_join);
4101
4102void
4103terminate (...)
4104 CODE:
4105 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4106
4107void
4108cancel (...)
4109 CODE:
4110 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4111
4112int
4113safe_cancel (Coro::State self, ...)
4114 C_ARGS: aTHX_ self, &ST (1), items - 1
2623 4115
2624void 4116void
2625schedule (...) 4117schedule (...)
2626 CODE: 4118 CODE:
2627 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4119 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2628 4120
2629void 4121void
4122schedule_to (...)
4123 CODE:
4124 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4125
4126void
4127cede_to (...)
4128 CODE:
4129 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
4130
4131void
2630cede (...) 4132cede (...)
2631 CODE: 4133 CODE:
2632 CORO_EXECUTE_SLF_XS (slf_init_cede); 4134 CORO_EXECUTE_SLF_XS (slf_init_cede);
2633 4135
2634void 4136void
… …
2638 4140
2639void 4141void
2640_set_current (SV *current) 4142_set_current (SV *current)
2641 PROTOTYPE: $ 4143 PROTOTYPE: $
2642 CODE: 4144 CODE:
2643 SvREFCNT_dec (SvRV (coro_current)); 4145 SvREFCNT_dec_NN (SvRV (coro_current));
2644 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4146 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2645 4147
2646void 4148void
2647_set_readyhook (SV *hook) 4149_set_readyhook (SV *hook)
2648 PROTOTYPE: $ 4150 PROTOTYPE: $
2649 CODE: 4151 CODE:
2650 SvREFCNT_dec (coro_readyhook); 4152 SvREFCNT_dec (coro_readyhook);
4153 SvGETMAGIC (hook);
4154 if (SvOK (hook))
4155 {
2651 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4156 coro_readyhook = newSVsv (hook);
4157 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4158 }
4159 else
4160 {
4161 coro_readyhook = 0;
4162 CORO_READYHOOK = 0;
4163 }
2652 4164
2653int 4165int
2654prio (Coro::State coro, int newprio = 0) 4166prio (Coro::State coro, int newprio = 0)
2655 PROTOTYPE: $;$ 4167 PROTOTYPE: $;$
2656 ALIAS: 4168 ALIAS:
… …
2662 if (items > 1) 4174 if (items > 1)
2663 { 4175 {
2664 if (ix) 4176 if (ix)
2665 newprio = coro->prio - newprio; 4177 newprio = coro->prio - newprio;
2666 4178
2667 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4179 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2668 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4180 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2669 4181
2670 coro->prio = newprio; 4182 coro->prio = newprio;
2671 } 4183 }
2672} 4184}
2673 OUTPUT: 4185 OUTPUT:
… …
2687 CODE: 4199 CODE:
2688 RETVAL = coro_nready; 4200 RETVAL = coro_nready;
2689 OUTPUT: 4201 OUTPUT:
2690 RETVAL 4202 RETVAL
2691 4203
2692# for async_pool speedup
2693void 4204void
2694_pool_1 (SV *cb) 4205suspend (Coro::State self)
4206 PROTOTYPE: $
2695 CODE: 4207 CODE:
2696{ 4208 self->flags |= CF_SUSPENDED;
2697 HV *hv = (HV *)SvRV (coro_current);
2698 struct coro *coro = SvSTATE_hv ((SV *)hv);
2699 AV *defav = GvAV (PL_defgv);
2700 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2701 AV *invoke_av;
2702 int i, len;
2703 4209
2704 if (!invoke) 4210void
4211resume (Coro::State self)
4212 PROTOTYPE: $
4213 CODE:
4214 self->flags &= ~CF_SUSPENDED;
4215
4216void
4217_pool_handler (...)
4218 CODE:
4219 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4220
4221void
4222async_pool (SV *cv, ...)
4223 PROTOTYPE: &@
4224 PPCODE:
4225{
4226 HV *hv = (HV *)av_pop (av_async_pool);
4227 AV *av = newAV ();
4228 SV *cb = ST (0);
4229 int i;
4230
4231 av_extend (av, items - 2);
4232 for (i = 1; i < items; ++i)
4233 av_push (av, SvREFCNT_inc_NN (ST (i)));
4234
4235 if ((SV *)hv == &PL_sv_undef)
2705 { 4236 {
2706 SV *old = PL_diehook; 4237 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2707 PL_diehook = 0; 4238 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2708 SvREFCNT_dec (old); 4239 SvREFCNT_dec_NN (sv);
2709 croak ("\3async_pool terminate\2\n");
2710 } 4240 }
2711 4241
2712 SvREFCNT_dec (coro->saved_deffh);
2713 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2714
2715 hv_store (hv, "desc", sizeof ("desc") - 1,
2716 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2717
2718 invoke_av = (AV *)SvRV (invoke);
2719 len = av_len (invoke_av);
2720
2721 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2722
2723 if (len > 0)
2724 { 4242 {
2725 av_fill (defav, len - 1); 4243 struct coro *coro = SvSTATE_hv (hv);
2726 for (i = 0; i < len; ++i) 4244
2727 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4245 assert (!coro->invoke_cb);
4246 assert (!coro->invoke_av);
4247 coro->invoke_cb = SvREFCNT_inc (cb);
4248 coro->invoke_av = av;
2728 } 4249 }
4250
4251 api_ready (aTHX_ (SV *)hv);
4252
4253 if (GIMME_V != G_VOID)
4254 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4255 else
4256 SvREFCNT_dec_NN (hv);
2729} 4257}
4258
4259SV *
4260rouse_cb ()
4261 PROTOTYPE:
4262 CODE:
4263 RETVAL = coro_new_rouse_cb (aTHX);
4264 OUTPUT:
4265 RETVAL
2730 4266
2731void 4267void
2732_pool_2 (SV *cb) 4268rouse_wait (...)
4269 PROTOTYPE: ;$
4270 PPCODE:
4271 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4272
4273void
4274on_enter (SV *block)
4275 ALIAS:
4276 on_leave = 1
4277 PROTOTYPE: &
2733 CODE: 4278 CODE:
2734{ 4279{
2735 HV *hv = (HV *)SvRV (coro_current);
2736 struct coro *coro = SvSTATE_hv ((SV *)hv); 4280 struct coro *coro = SvSTATE_current;
4281 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2737 4282
2738 sv_setsv (cb, &PL_sv_undef); 4283 block = s_get_cv_croak (block);
2739 4284
2740 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4285 if (!*avp)
2741 coro->saved_deffh = 0; 4286 *avp = newAV ();
2742 4287
2743 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4288 av_push (*avp, SvREFCNT_inc (block));
2744 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2745 {
2746 SV *old = PL_diehook;
2747 PL_diehook = 0;
2748 SvREFCNT_dec (old);
2749 croak ("\3async_pool terminate\2\n");
2750 }
2751 4289
2752 av_clear (GvAV (PL_defgv)); 4290 if (!ix)
2753 hv_store (hv, "desc", sizeof ("desc") - 1, 4291 on_enterleave_call (aTHX_ block);
2754 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2755 4292
2756 coro->prio = 0; 4293 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2757 4294 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2758 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4295 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2759 api_trace (aTHX_ coro_current, 0);
2760
2761 av_push (av_async_pool, newSVsv (coro_current));
2762} 4296}
2763 4297
2764 4298
2765MODULE = Coro::State PACKAGE = PerlIO::cede 4299MODULE = Coro::State PACKAGE = PerlIO::cede
2766 4300
… …
2769 4303
2770 4304
2771MODULE = Coro::State PACKAGE = Coro::Semaphore 4305MODULE = Coro::State PACKAGE = Coro::Semaphore
2772 4306
2773SV * 4307SV *
2774new (SV *klass, SV *count_ = 0) 4308new (SV *klass, SV *count = 0)
2775 CODE: 4309 CODE:
2776{ 4310{
2777 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4311 int semcnt = 1;
2778 AV *av = newAV (); 4312
2779 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4313 if (count)
2780 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4314 {
4315 SvGETMAGIC (count);
4316
4317 if (SvOK (count))
4318 semcnt = SvIV (count);
4319 }
4320
4321 RETVAL = sv_bless (
4322 coro_waitarray_new (aTHX_ semcnt),
4323 GvSTASH (CvGV (cv))
4324 );
2781} 4325}
4326 OUTPUT:
4327 RETVAL
4328
4329# helper for Coro::Channel and others
4330SV *
4331_alloc (int count)
4332 CODE:
4333 RETVAL = coro_waitarray_new (aTHX_ count);
2782 OUTPUT: 4334 OUTPUT:
2783 RETVAL 4335 RETVAL
2784 4336
2785SV * 4337SV *
2786count (SV *self) 4338count (SV *self)
… …
2788 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4340 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2789 OUTPUT: 4341 OUTPUT:
2790 RETVAL 4342 RETVAL
2791 4343
2792void 4344void
2793up (SV *self, int adjust = 1) 4345up (SV *self)
2794 ALIAS:
2795 adjust = 1
2796 CODE: 4346 CODE:
2797 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4347 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
2798 4348
2799void 4349void
2800down (SV *self) 4350adjust (SV *self, int adjust)
4351 CODE:
4352 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4353
4354void
4355down (...)
2801 CODE: 4356 CODE:
2802 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4357 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4358
4359void
4360wait (...)
4361 CODE:
4362 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2803 4363
2804void 4364void
2805try (SV *self) 4365try (SV *self)
2806 PPCODE: 4366 PPCODE:
2807{ 4367{
… …
2819 XSRETURN_NO; 4379 XSRETURN_NO;
2820} 4380}
2821 4381
2822void 4382void
2823waiters (SV *self) 4383waiters (SV *self)
2824 CODE: 4384 PPCODE:
2825{ 4385{
2826 AV *av = (AV *)SvRV (self); 4386 AV *av = (AV *)SvRV (self);
4387 int wcount = AvFILLp (av) + 1 - 1;
2827 4388
2828 if (GIMME_V == G_SCALAR) 4389 if (GIMME_V == G_SCALAR)
2829 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4390 XPUSHs (sv_2mortal (newSViv (wcount)));
2830 else 4391 else
2831 { 4392 {
2832 int i; 4393 int i;
2833 EXTEND (SP, AvFILLp (av) + 1 - 1); 4394 EXTEND (SP, wcount);
2834 for (i = 1; i <= AvFILLp (av); ++i) 4395 for (i = 1; i <= wcount; ++i)
2835 PUSHs (newSVsv (AvARRAY (av)[i])); 4396 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2836 } 4397 }
2837} 4398}
4399
4400MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4401
4402void
4403_may_delete (SV *sem, int count, unsigned int extra_refs)
4404 PPCODE:
4405{
4406 AV *av = (AV *)SvRV (sem);
4407
4408 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4409 && AvFILLp (av) == 0 /* no waiters, just count */
4410 && SvIV (AvARRAY (av)[0]) == count)
4411 XSRETURN_YES;
4412
4413 XSRETURN_NO;
4414}
4415
4416MODULE = Coro::State PACKAGE = Coro::Signal
4417
4418SV *
4419new (SV *klass)
4420 CODE:
4421 RETVAL = sv_bless (
4422 coro_waitarray_new (aTHX_ 0),
4423 GvSTASH (CvGV (cv))
4424 );
4425 OUTPUT:
4426 RETVAL
4427
4428void
4429wait (...)
4430 CODE:
4431 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4432
4433void
4434broadcast (SV *self)
4435 CODE:
4436{
4437 AV *av = (AV *)SvRV (self);
4438 coro_signal_wake (aTHX_ av, AvFILLp (av));
4439}
4440
4441void
4442send (SV *self)
4443 CODE:
4444{
4445 AV *av = (AV *)SvRV (self);
4446
4447 if (AvFILLp (av))
4448 coro_signal_wake (aTHX_ av, 1);
4449 else
4450 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4451}
4452
4453IV
4454awaited (SV *self)
4455 CODE:
4456 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4457 OUTPUT:
4458 RETVAL
2838 4459
2839 4460
2840MODULE = Coro::State PACKAGE = Coro::AnyEvent 4461MODULE = Coro::State PACKAGE = Coro::AnyEvent
2841 4462
2842BOOT: 4463BOOT:
… …
2844 4465
2845void 4466void
2846_schedule (...) 4467_schedule (...)
2847 CODE: 4468 CODE:
2848{ 4469{
2849 static int incede; 4470 static int incede;
2850 4471
2851 api_cede_notself (aTHX); 4472 api_cede_notself (aTHX);
2852 4473
2853 ++incede; 4474 ++incede;
2854 while (coro_nready >= incede && api_cede (aTHX)) 4475 while (coro_nready >= incede && api_cede (aTHX))
… …
2857 sv_setsv (sv_activity, &PL_sv_undef); 4478 sv_setsv (sv_activity, &PL_sv_undef);
2858 if (coro_nready >= incede) 4479 if (coro_nready >= incede)
2859 { 4480 {
2860 PUSHMARK (SP); 4481 PUSHMARK (SP);
2861 PUTBACK; 4482 PUTBACK;
2862 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4483 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2863 SPAGAIN;
2864 } 4484 }
2865 4485
2866 --incede; 4486 --incede;
2867} 4487}
2868 4488
… …
2871 4491
2872void 4492void
2873_register (char *target, char *proto, SV *req) 4493_register (char *target, char *proto, SV *req)
2874 CODE: 4494 CODE:
2875{ 4495{
2876 HV *st; 4496 SV *req_cv = s_get_cv_croak (req);
2877 GV *gvp; 4497 /* newXSproto doesn't return the CV on 5.8 */
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 CV *slf_cv = newXSproto (target, coro_aio_req_xs, __FILE__, proto); 4498 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4499 sv_setpv ((SV *)slf_cv, proto);
2880 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4500 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2881} 4501}
2882 4502
4503MODULE = Coro::State PACKAGE = Coro::Select
4504
4505void
4506patch_pp_sselect ()
4507 CODE:
4508 if (!coro_old_pp_sselect)
4509 {
4510 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4511 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4512 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4513 }
4514
4515void
4516unpatch_pp_sselect ()
4517 CODE:
4518 if (coro_old_pp_sselect)
4519 {
4520 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4521 coro_old_pp_sselect = 0;
4522 }
4523
4524MODULE = Coro::State PACKAGE = Coro::Util
4525
4526void
4527_exit (int code)
4528 CODE:
4529 _exit (code);
4530
4531NV
4532time ()
4533 CODE:
4534 RETVAL = nvtime (aTHX);
4535 OUTPUT:
4536 RETVAL
4537
4538NV
4539gettimeofday ()
4540 PPCODE:
4541{
4542 UV tv [2];
4543 u2time (aTHX_ tv);
4544 EXTEND (SP, 2);
4545 PUSHs (sv_2mortal (newSVuv (tv [0])));
4546 PUSHs (sv_2mortal (newSVuv (tv [1])));
4547}
4548

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