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Comparing Coro/Coro/State.xs (file contents):
Revision 1.286 by root, Mon Nov 17 04:19:49 2008 UTC vs.
Revision 1.460 by root, Fri Jun 17 05:28:22 2016 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SvREFCNT_dec_NN
28 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
29#endif
30
31#ifndef SvREFCNT_inc_NN
32 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
33#endif
34
35#ifndef SVs_PADSTALE
36# define SVs_PADSTALE 0
37#endif
38
39#ifdef PadARRAY
40# define NEWPADAPI 1
41# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
42#else
43typedef AV PADNAMELIST;
44# if !PERL_VERSION_ATLEAST(5,8,0)
45typedef AV PADLIST;
46typedef AV PAD;
47# endif
48# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
49# define PadlistMAX(pl) AvFILLp (pl)
50# define PadlistNAMES(pl) (*PadlistARRAY (pl))
51# define PadARRAY AvARRAY
52# define PadMAX AvFILLp
53# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
54#endif
55#ifndef PadnamelistREFCNT
56# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
57#endif
58#ifndef PadnamelistREFCNT_dec
59# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
60#endif
61
62/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
63/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
64#if PERL_VERSION_ATLEAST(5,19,0)
65# define SVt_BIND SVt_IV
66#endif
67
68#if defined(_WIN32)
69# undef HAS_GETTIMEOFDAY
18# undef setjmp 70# undef setjmp
19# undef longjmp 71# undef longjmp
20# undef _exit 72# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 73# define setjmp _setjmp /* deep magic */
22#else 74#else
23# include <inttypes.h> /* most portable stdint.h */ 75# include <inttypes.h> /* most portable stdint.h */
24#endif 76#endif
25 77
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 78/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 79static int cctx_max_idle = 4;
55 80
56#define PERL_VERSION_ATLEAST(a,b,c) \ 81#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 82# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD
108#endif
109
110#ifndef CORO_STACKGUARD
111# define CORO_STACKGUARD 0
112#endif 83#endif
113 84
114/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 88#endif
118 89
119/* The next macros try to return the current stack pointer, in an as 90/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 91 * portable way as possible. */
121#if __GNUC__ >= 4 92#if __GNUC__ >= 4
93# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 94# define STACKLEVEL __builtin_frame_address (0)
123#else 95#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 96# define dSTACKLEVEL volatile void *stacklevel
97# define STACKLEVEL ((void *)&stacklevel)
125#endif 98#endif
126 99
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 100#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 101
144#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
145 104
146#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
147# if CORO_PTHREAD 106# if CORO_PTHREAD
148static void *coro_thx; 107static void *coro_thx;
149# endif 108# endif
150#endif 109#endif
151 110
152/* helper storage struct for Coro::AIO */ 111#ifdef __linux
153struct io_state 112# include <time.h> /* for timespec */
154{ 113# include <syscall.h> /* for SYS_* */
155 AV *res; 114# ifdef SYS_clock_gettime
156 int errorno; 115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 116# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 118# endif
160}; 119#endif
161 120
162static double (*nvtime)(); /* so why doesn't it take void? */ 121static double (*nvtime)(); /* so why doesn't it take void? */
122static void (*u2time)(pTHX_ UV ret[2]);
123
124/* we hijack an hopefully unused CV flag for our purposes */
125#define CVf_SLF 0x4000
126static OP *pp_slf (pTHX);
127static void slf_destroy (pTHX_ struct coro *coro);
163 128
164static U32 cctx_gen; 129static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 130static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 131static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 132static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 133static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 134static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 135static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 136
137static AV *av_destroy; /* destruction queue */
138static SV *sv_manager; /* the manager coro */
139static SV *sv_idle; /* $Coro::idle */
140
172static GV *irsgv; /* $/ */ 141static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 142static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 143static SV *rv_diehook;
175static SV *rv_warnhook; 144static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
177 145
178/* async_pool helper stuff */ 146/* async_pool helper stuff */
179static SV *sv_pool_rss; 147static SV *sv_pool_rss;
180static SV *sv_pool_size; 148static SV *sv_pool_size;
149static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 150static AV *av_async_pool; /* idle pool */
151static SV *sv_Coro; /* class string */
152static CV *cv_pool_handler;
182 153
183/* Coro::AnyEvent */ 154/* Coro::AnyEvent */
184static SV *sv_activity; 155static SV *sv_activity;
185 156
157/* enable processtime/realtime profiling */
158static char enable_times;
159typedef U32 coro_ts[2];
160static coro_ts time_real, time_cpu;
161static char times_valid;
162
186static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 164static int cctx_count, cctx_idle;
188 165
189enum { 166enum
167{
190 CC_MAPPED = 0x01, 168 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 169 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 170 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 171 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 172 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
199typedef struct coro_cctx 177typedef struct coro_cctx
200{ 178{
201 struct coro_cctx *next; 179 struct coro_cctx *next;
202 180
203 /* the stack */ 181 /* the stack */
204 void *sptr; 182 struct coro_stack stack;
205 size_t ssize;
206 183
207 /* cpu state */ 184 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 185 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
186#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 187 JMPENV *idle_te; /* same as idle_sp, but for top_env */
188#endif
210 JMPENV *top_env; 189 JMPENV *top_env;
211 coro_context cctx; 190 coro_context cctx;
212 191
213 U32 gen; 192 U32 gen;
214#if CORO_USE_VALGRIND 193#if CORO_USE_VALGRIND
215 int valgrind_id; 194 int valgrind_id;
216#endif 195#endif
217 unsigned char flags; 196 unsigned char flags;
218} coro_cctx; 197} coro_cctx;
219 198
199static coro_cctx *cctx_current; /* the currently running cctx */
200
201/*****************************************************************************/
202
203static MGVTBL coro_state_vtbl;
204
220enum { 205enum
206{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 207 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 208 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 209 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 210 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
211 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
212 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 213};
226 214
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 215/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 216typedef struct
229{ 217{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 218 #define VARx(name,expr,type) type name;
235# include "state.h" 219 #include "state.h"
236#undef VAR
237} perl_slots; 220} perl_slots;
238 221
222/* how many context stack entries do we need for perl_slots */
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 223#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 224
241/* this is a structure representing a perl-level coroutine */ 225/* this is a structure representing a perl-level coroutine */
242struct coro { 226struct coro
227{
243 /* the C coroutine allocated to this perl coroutine, if any */ 228 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 229 coro_cctx *cctx;
230
231 /* ready queue */
232 struct coro *next_ready;
245 233
246 /* state data */ 234 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 235 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 236 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 237 perl_slots *slot; /* basically the saved sp */
250 238
239 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 240 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 241 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 242 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 243
257 /* statistics */ 244 /* statistics */
258 int usecount; /* number of transfers to this coro */ 245 int usecount; /* number of transfers to this coro */
259 246
260 /* coro process data */ 247 /* coro process data */
261 int prio; 248 int prio;
262 SV *throw; /* exception to be thrown */ 249 SV *except; /* exception to be thrown */
250 SV *rouse_cb; /* last rouse callback */
251 AV *on_destroy; /* callbacks or coros to notify on destroy */
252 AV *status; /* the exit status list */
263 253
264 /* async_pool */ 254 /* async_pool */
265 SV *saved_deffh; 255 SV *saved_deffh;
256 SV *invoke_cb;
257 AV *invoke_av;
258
259 /* on_enter/on_leave */
260 AV *on_enter; AV *on_enter_xs;
261 AV *on_leave; AV *on_leave_xs;
262
263 /* swap_sv */
264 AV *swap_sv;
265
266 /* times */
267 coro_ts t_cpu, t_real;
266 268
267 /* linked list */ 269 /* linked list */
268 struct coro *next, *prev; 270 struct coro *next, *prev;
269}; 271};
270 272
271typedef struct coro *Coro__State; 273typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 274typedef struct coro *Coro__State_or_hashref;
273 275
274/* the following variables are effectively part of the perl context */ 276/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */ 277/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */ 278/* the main reason we don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */ 279static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
279 280
280/** Coro ********************************************************************/ 281/** Coro ********************************************************************/
281 282
282#define PRIO_MAX 3 283#define CORO_PRIO_MAX 3
283#define PRIO_HIGH 1 284#define CORO_PRIO_HIGH 1
284#define PRIO_NORMAL 0 285#define CORO_PRIO_NORMAL 0
285#define PRIO_LOW -1 286#define CORO_PRIO_LOW -1
286#define PRIO_IDLE -3 287#define CORO_PRIO_IDLE -3
287#define PRIO_MIN -4 288#define CORO_PRIO_MIN -4
288 289
289/* for Coro.pm */ 290/* for Coro.pm */
290static SV *coro_current; 291static SV *coro_current;
291static SV *coro_readyhook; 292static SV *coro_readyhook;
292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 293static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
294static CV *cv_coro_run;
293static struct coro *coro_first; 295static struct coro *coro_first;
294#define coro_nready coroapi.nready 296#define coro_nready coroapi.nready
295 297
298/** JIT *********************************************************************/
299
300#if CORO_JIT
301 /* APPLE doesn't have mmap though */
302 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
303 #ifndef CORO_JIT_TYPE
304 #if ECB_AMD64 && CORO_JIT_UNIXY
305 #define CORO_JIT_TYPE "amd64-unix"
306 #elif __i386 && CORO_JIT_UNIXY
307 #define CORO_JIT_TYPE "x86-unix"
308 #endif
309 #endif
310#endif
311
312#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
313 #undef CORO_JIT
314#endif
315
316#if CORO_JIT
317 typedef void (*load_save_perl_slots_type)(perl_slots *);
318 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
319#endif
320
321/** Coro::Select ************************************************************/
322
323static OP *(*coro_old_pp_sselect) (pTHX);
324static SV *coro_select_select;
325
326/* horrible hack, but if it works... */
327static OP *
328coro_pp_sselect (pTHX)
329{
330 dSP;
331 PUSHMARK (SP - 4); /* fake argument list */
332 XPUSHs (coro_select_select);
333 PUTBACK;
334
335 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
336 PL_op->op_flags |= OPf_STACKED;
337 PL_op->op_private = 0;
338 return PL_ppaddr [OP_ENTERSUB](aTHX);
339}
340
341/** time stuff **************************************************************/
342
343#ifdef HAS_GETTIMEOFDAY
344
345ecb_inline void
346coro_u2time (pTHX_ UV ret[2])
347{
348 struct timeval tv;
349 gettimeofday (&tv, 0);
350
351 ret [0] = tv.tv_sec;
352 ret [1] = tv.tv_usec;
353}
354
355ecb_inline double
356coro_nvtime (void)
357{
358 struct timeval tv;
359 gettimeofday (&tv, 0);
360
361 return tv.tv_sec + tv.tv_usec * 1e-6;
362}
363
364ecb_inline void
365time_init (pTHX)
366{
367 nvtime = coro_nvtime;
368 u2time = coro_u2time;
369}
370
371#else
372
373ecb_inline void
374time_init (pTHX)
375{
376 SV **svp;
377
378 require_pv ("Time/HiRes.pm");
379
380 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
381
382 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
383 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
384
385 nvtime = INT2PTR (double (*)(), SvIV (*svp));
386
387 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
388 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
389}
390
391#endif
392
296/** lowlevel stuff **********************************************************/ 393/** lowlevel stuff **********************************************************/
297 394
298static SV * 395static SV * ecb_noinline
299coro_get_sv (pTHX_ const char *name, int create) 396coro_get_sv (pTHX_ const char *name, int create)
300{ 397{
301#if PERL_VERSION_ATLEAST (5,10,0) 398#if PERL_VERSION_ATLEAST (5,10,0)
302 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 399 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
303 get_sv (name, create); 400 get_sv (name, create);
304#endif 401#endif
305 return get_sv (name, create); 402 return get_sv (name, create);
306} 403}
307 404
308static AV * 405static AV * ecb_noinline
309coro_get_av (pTHX_ const char *name, int create) 406coro_get_av (pTHX_ const char *name, int create)
310{ 407{
311#if PERL_VERSION_ATLEAST (5,10,0) 408#if PERL_VERSION_ATLEAST (5,10,0)
312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 409 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
313 get_av (name, create); 410 get_av (name, create);
314#endif 411#endif
315 return get_av (name, create); 412 return get_av (name, create);
316} 413}
317 414
318static HV * 415static HV * ecb_noinline
319coro_get_hv (pTHX_ const char *name, int create) 416coro_get_hv (pTHX_ const char *name, int create)
320{ 417{
321#if PERL_VERSION_ATLEAST (5,10,0) 418#if PERL_VERSION_ATLEAST (5,10,0)
322 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 419 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
323 get_hv (name, create); 420 get_hv (name, create);
324#endif 421#endif
325 return get_hv (name, create); 422 return get_hv (name, create);
326} 423}
327 424
328static AV * 425ecb_inline void
426coro_times_update (void)
427{
428#ifdef coro_clock_gettime
429 struct timespec ts;
430
431 ts.tv_sec = ts.tv_nsec = 0;
432 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
433 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
434
435 ts.tv_sec = ts.tv_nsec = 0;
436 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
437 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
438#else
439 dTHX;
440 UV tv[2];
441
442 u2time (aTHX_ tv);
443 time_real [0] = tv [0];
444 time_real [1] = tv [1] * 1000;
445#endif
446}
447
448ecb_inline void
449coro_times_add (struct coro *c)
450{
451 c->t_real [1] += time_real [1];
452 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
453 c->t_real [0] += time_real [0];
454
455 c->t_cpu [1] += time_cpu [1];
456 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
457 c->t_cpu [0] += time_cpu [0];
458}
459
460ecb_inline void
461coro_times_sub (struct coro *c)
462{
463 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
464 c->t_real [1] -= time_real [1];
465 c->t_real [0] -= time_real [0];
466
467 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
468 c->t_cpu [1] -= time_cpu [1];
469 c->t_cpu [0] -= time_cpu [0];
470}
471
472/*****************************************************************************/
473/* magic glue */
474
475#define CORO_MAGIC_type_cv 26
476#define CORO_MAGIC_type_state PERL_MAGIC_ext
477
478#define CORO_MAGIC_NN(sv, type) \
479 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
480 ? SvMAGIC (sv) \
481 : mg_find (sv, type))
482
483#define CORO_MAGIC(sv, type) \
484 (ecb_expect_true (SvMAGIC (sv)) \
485 ? CORO_MAGIC_NN (sv, type) \
486 : 0)
487
488#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
489#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
490
491ecb_inline MAGIC *
492SvSTATEhv_p (pTHX_ SV *coro)
493{
494 MAGIC *mg;
495
496 if (ecb_expect_true (
497 SvTYPE (coro) == SVt_PVHV
498 && (mg = CORO_MAGIC_state (coro))
499 && mg->mg_virtual == &coro_state_vtbl
500 ))
501 return mg;
502
503 return 0;
504}
505
506ecb_inline struct coro *
507SvSTATE_ (pTHX_ SV *coro_sv)
508{
509 MAGIC *mg;
510
511 if (SvROK (coro_sv))
512 coro_sv = SvRV (coro_sv);
513
514 mg = SvSTATEhv_p (aTHX_ coro_sv);
515 if (!mg)
516 croak ("Coro::State object required");
517
518 return (struct coro *)mg->mg_ptr;
519}
520
521#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
522
523/* faster than SvSTATE, but expects a coroutine hv */
524#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
525#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
526
527/*****************************************************************************/
528/* padlist management and caching */
529
530ecb_inline PADLIST *
329coro_clone_padlist (pTHX_ CV *cv) 531coro_derive_padlist (pTHX_ CV *cv)
330{ 532{
331 AV *padlist = CvPADLIST (cv); 533 PADLIST *padlist = CvPADLIST (cv);
332 AV *newpadlist, *newpad; 534 PADLIST *newpadlist;
535 PADNAMELIST *padnames;
536 PAD *newpad;
537 PADOFFSET off = PadlistMAX (padlist) + 1;
333 538
334 newpadlist = newAV (); 539#if NEWPADAPI
540
541 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
542 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
543 while (!PadlistARRAY (padlist)[off - 1])
544 --off;
545
546 Perl_pad_push (aTHX_ padlist, off);
547
548 newpad = PadlistARRAY (padlist)[off];
549 PadlistARRAY (padlist)[off] = 0;
550
551#else
552
553#if PERL_VERSION_ATLEAST (5,10,0)
554 Perl_pad_push (aTHX_ padlist, off);
555#else
556 Perl_pad_push (aTHX_ padlist, off, 1);
557#endif
558
559 newpad = PadlistARRAY (padlist)[off];
560 PadlistMAX (padlist) = off - 1;
561
562#endif
563
564 newPADLIST (newpadlist);
565#if !PERL_VERSION_ATLEAST(5,15,3)
566 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
335 AvREAL_off (newpadlist); 567 AvREAL_off (newpadlist);
336#if PERL_VERSION_ATLEAST (5,10,0)
337 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
338#else
339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
340#endif 568#endif
341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
342 --AvFILLp (padlist);
343 569
344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 570 /* Already extended to 2 elements by newPADLIST. */
345 av_store (newpadlist, 1, (SV *)newpad); 571 PadlistMAX (newpadlist) = 1;
572
573 padnames = PadlistNAMES (padlist);
574 ++PadnamelistREFCNT (padnames);
575 PadlistNAMES (newpadlist) = padnames;
576
577 PadlistARRAY (newpadlist)[1] = newpad;
346 578
347 return newpadlist; 579 return newpadlist;
348} 580}
349 581
350static void 582ecb_inline void
351free_padlist (pTHX_ AV *padlist) 583free_padlist (pTHX_ PADLIST *padlist)
352{ 584{
353 /* may be during global destruction */ 585 /* may be during global destruction */
354 if (SvREFCNT (padlist)) 586 if (!IN_DESTRUCT)
355 { 587 {
356 I32 i = AvFILLp (padlist); 588 I32 i = PadlistMAX (padlist);
357 while (i >= 0) 589
590 while (i > 0) /* special-case index 0 */
358 { 591 {
359 SV **svp = av_fetch (padlist, i--, FALSE); 592 /* we try to be extra-careful here */
593 PAD *pad = PadlistARRAY (padlist)[i--];
594
360 if (svp) 595 if (pad)
361 { 596 {
362 SV *sv; 597 I32 j = PadMAX (pad);
363 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 598
599 while (j >= 0)
364 SvREFCNT_dec (sv); 600 SvREFCNT_dec (PadARRAY (pad)[j--]);
365 601
602 PadMAX (pad) = -1;
366 SvREFCNT_dec (*svp); 603 SvREFCNT_dec (pad);
367 } 604 }
368 } 605 }
369 606
607 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
608
609#if NEWPADAPI
610 Safefree (PadlistARRAY (padlist));
611 Safefree (padlist);
612#else
613 AvFILLp (padlist) = -1;
614 AvREAL_off (padlist);
370 SvREFCNT_dec ((SV*)padlist); 615 SvREFCNT_dec ((SV*)padlist);
616#endif
371 } 617 }
372} 618}
373 619
374static int 620static int
375coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 621coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
376{ 622{
377 AV *padlist; 623 PADLIST *padlist;
378 AV *av = (AV *)mg->mg_obj; 624 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
625 size_t len = *(size_t *)mg->mg_ptr;
379 626
380 /* casting is fun. */ 627 /* perl manages to free our internal AV and _then_ call us */
381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 628 if (IN_DESTRUCT)
629 return 0;
630
631 while (len--)
382 free_padlist (aTHX_ padlist); 632 free_padlist (aTHX_ padlists[len]);
383
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385 633
386 return 0; 634 return 0;
387} 635}
388
389#define CORO_MAGIC_type_cv PERL_MAGIC_ext
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 636
392static MGVTBL coro_cv_vtbl = { 637static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0, 638 0, 0, 0, 0,
394 coro_cv_free 639 coro_cv_free
395}; 640};
396 641
397#define CORO_MAGIC(sv, type) \
398 expect_true (SvMAGIC (sv)) \
399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
400 ? SvMAGIC (sv) \
401 : mg_find (sv, type) \
402 : 0
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
445
446/* the next two functions merely cache the padlists */ 642/* the next two functions merely cache the padlists */
447static void 643ecb_inline void
448get_padlist (pTHX_ CV *cv) 644get_padlist (pTHX_ CV *cv)
449{ 645{
450 MAGIC *mg = CORO_MAGIC_cv (cv); 646 MAGIC *mg = CORO_MAGIC_cv (cv);
451 AV *av; 647 size_t *lenp;
452 648
453 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 649 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
454 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 650 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
455 else 651 else
456 { 652 {
457#if CORO_PREFER_PERL_FUNCTIONS 653#if CORO_PREFER_PERL_FUNCTIONS
458 /* this is probably cleaner? but also slower! */ 654 /* this is probably cleaner? but also slower! */
459 /* in practise, it seems to be less stable */ 655 /* in practise, it seems to be less stable */
460 CV *cp = Perl_cv_clone (cv); 656 CV *cp = Perl_cv_clone (aTHX_ cv);
461 CvPADLIST (cv) = CvPADLIST (cp); 657 CvPADLIST (cv) = CvPADLIST (cp);
462 CvPADLIST (cp) = 0; 658 CvPADLIST (cp) = 0;
463 SvREFCNT_dec (cp); 659 SvREFCNT_dec (cp);
464#else 660#else
465 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 661 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
466#endif 662#endif
467 } 663 }
468} 664}
469 665
470static void 666ecb_inline void
471put_padlist (pTHX_ CV *cv) 667put_padlist (pTHX_ CV *cv)
472{ 668{
473 MAGIC *mg = CORO_MAGIC_cv (cv); 669 MAGIC *mg = CORO_MAGIC_cv (cv);
474 AV *av;
475 670
476 if (expect_false (!mg)) 671 if (ecb_expect_false (!mg))
672 {
477 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 673 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
674 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
675 mg->mg_len = 1; /* so mg_free frees mg_ptr */
676 }
677 else
678 Renew (mg->mg_ptr,
679 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
680 char);
478 681
479 av = (AV *)mg->mg_obj; 682 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
480
481 if (expect_false (AvFILLp (av) >= AvMAX (av)))
482 av_extend (av, AvMAX (av) + 1);
483
484 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
485} 683}
486 684
487/** load & save, init *******************************************************/ 685/** load & save, init *******************************************************/
686
687ecb_inline void
688swap_sv (SV *a, SV *b)
689{
690 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
691 SV tmp;
692
693 /* swap sv_any */
694 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
695
696 /* swap sv_flags */
697 SvFLAGS (&tmp) = SvFLAGS (a);
698 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
699 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
700
701#if PERL_VERSION_ATLEAST (5,10,0)
702 /* perl 5.10 and later complicates this _quite_ a bit, but it also
703 * is much faster, so no quarrels here. alternatively, we could
704 * sv_upgrade to avoid this.
705 */
706 {
707 /* swap sv_u */
708 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
709
710 /* if SvANY points to the head, we need to adjust the pointers,
711 * as the pointer for a still points to b, and maybe vice versa.
712 */
713 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
714 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
715 svany_in_head_set |= 1 << SVt_NV;
716 #endif
717
718 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
719
720 if (svany_in_head (SvTYPE (a)))
721 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
722
723 if (svany_in_head (SvTYPE (b)))
724 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
725 }
726#endif
727}
728
729/* swap sv heads, at least logically */
730static void
731swap_svs_enter (pTHX_ Coro__State c)
732{
733 int i;
734
735 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
736 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
737}
738
739static void
740swap_svs_leave (pTHX_ Coro__State c)
741{
742 int i;
743
744 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
745 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
746}
747
748#define SWAP_SVS_ENTER(coro) \
749 if (ecb_expect_false ((coro)->swap_sv)) \
750 swap_svs_enter (aTHX_ (coro))
751
752#define SWAP_SVS_LEAVE(coro) \
753 if (ecb_expect_false ((coro)->swap_sv)) \
754 swap_svs_leave (aTHX_ (coro))
755
756static void
757on_enterleave_call (pTHX_ SV *cb);
488 758
489static void 759static void
490load_perl (pTHX_ Coro__State c) 760load_perl (pTHX_ Coro__State c)
491{ 761{
492 perl_slots *slot = c->slot; 762 perl_slots *slot = c->slot;
493 c->slot = 0; 763 c->slot = 0;
494 764
495 PL_mainstack = c->mainstack; 765 PL_mainstack = c->mainstack;
496 766
497 GvSV (PL_defgv) = slot->defsv; 767#if CORO_JIT
498 GvAV (PL_defgv) = slot->defav; 768 load_perl_slots (slot);
499 GvSV (PL_errgv) = slot->errsv; 769#else
500 GvSV (irsgv) = slot->irsgv;
501
502 #define VAR(name,type) PL_ ## name = slot->name; 770 #define VARx(name,expr,type) expr = slot->name;
503 # include "state.h" 771 #include "state.h"
504 #undef VAR 772#endif
505 773
506 { 774 {
507 dSP; 775 dSP;
508 776
509 CV *cv; 777 CV *cv;
510 778
511 /* now do the ugly restore mess */ 779 /* now do the ugly restore mess */
512 while (expect_true (cv = (CV *)POPs)) 780 while (ecb_expect_true (cv = (CV *)POPs))
513 { 781 {
514 put_padlist (aTHX_ cv); /* mark this padlist as available */ 782 put_padlist (aTHX_ cv); /* mark this padlist as available */
515 CvDEPTH (cv) = PTR2IV (POPs); 783 CvDEPTH (cv) = PTR2IV (POPs);
516 CvPADLIST (cv) = (AV *)POPs; 784 CvPADLIST (cv) = (PADLIST *)POPs;
517 } 785 }
518 786
519 PUTBACK; 787 PUTBACK;
520 } 788 }
521 789
522 slf_frame = c->slf_frame; 790 slf_frame = c->slf_frame;
523 coro_throw = c->throw; 791 CORO_THROW = c->except;
792
793 if (ecb_expect_false (enable_times))
794 {
795 if (ecb_expect_false (!times_valid))
796 coro_times_update ();
797
798 coro_times_sub (c);
799 }
800
801 if (ecb_expect_false (c->on_enter))
802 {
803 int i;
804
805 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
806 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
807 }
808
809 if (ecb_expect_false (c->on_enter_xs))
810 {
811 int i;
812
813 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
814 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
815 }
816
817 SWAP_SVS_ENTER (c);
524} 818}
525 819
526static void 820static void
527save_perl (pTHX_ Coro__State c) 821save_perl (pTHX_ Coro__State c)
528{ 822{
529 c->throw = coro_throw; 823 SWAP_SVS_LEAVE (c);
824
825 if (ecb_expect_false (c->on_leave_xs))
826 {
827 int i;
828
829 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
830 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
831 }
832
833 if (ecb_expect_false (c->on_leave))
834 {
835 int i;
836
837 for (i = AvFILLp (c->on_leave); i >= 0; --i)
838 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
839 }
840
841 times_valid = 0;
842
843 if (ecb_expect_false (enable_times))
844 {
845 coro_times_update (); times_valid = 1;
846 coro_times_add (c);
847 }
848
849 c->except = CORO_THROW;
530 c->slf_frame = slf_frame; 850 c->slf_frame = slf_frame;
531 851
532 { 852 {
533 dSP; 853 dSP;
534 I32 cxix = cxstack_ix; 854 I32 cxix = cxstack_ix;
… …
542 862
543 XPUSHs (Nullsv); 863 XPUSHs (Nullsv);
544 /* this loop was inspired by pp_caller */ 864 /* this loop was inspired by pp_caller */
545 for (;;) 865 for (;;)
546 { 866 {
547 while (expect_true (cxix >= 0)) 867 while (ecb_expect_true (cxix >= 0))
548 { 868 {
549 PERL_CONTEXT *cx = &ccstk[cxix--]; 869 PERL_CONTEXT *cx = &ccstk[cxix--];
550 870
551 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 871 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
552 { 872 {
553 CV *cv = cx->blk_sub.cv; 873 CV *cv = cx->blk_sub.cv;
554 874
555 if (expect_true (CvDEPTH (cv))) 875 if (ecb_expect_true (CvDEPTH (cv)))
556 { 876 {
557 EXTEND (SP, 3); 877 EXTEND (SP, 3);
558 PUSHs ((SV *)CvPADLIST (cv)); 878 PUSHs ((SV *)CvPADLIST (cv));
559 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 879 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
560 PUSHs ((SV *)cv); 880 PUSHs ((SV *)cv);
… …
563 get_padlist (aTHX_ cv); 883 get_padlist (aTHX_ cv);
564 } 884 }
565 } 885 }
566 } 886 }
567 887
568 if (expect_true (top_si->si_type == PERLSI_MAIN)) 888 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
569 break; 889 break;
570 890
571 top_si = top_si->si_prev; 891 top_si = top_si->si_prev;
572 ccstk = top_si->si_cxstack; 892 ccstk = top_si->si_cxstack;
573 cxix = top_si->si_cxix; 893 cxix = top_si->si_cxix;
… …
575 895
576 PUTBACK; 896 PUTBACK;
577 } 897 }
578 898
579 /* allocate some space on the context stack for our purposes */ 899 /* allocate some space on the context stack for our purposes */
580 /* we manually unroll here, as usually 2 slots is enough */ 900 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
581 if (SLOT_COUNT >= 1) CXINC;
582 if (SLOT_COUNT >= 2) CXINC;
583 if (SLOT_COUNT >= 3) CXINC;
584 { 901 {
585 int i; 902 unsigned int i;
903
586 for (i = 3; i < SLOT_COUNT; ++i) 904 for (i = 0; i < SLOT_COUNT; ++i)
587 CXINC; 905 CXINC;
588 } 906
589 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 907 cxstack_ix -= SLOT_COUNT; /* undo allocation */
908 }
590 909
591 c->mainstack = PL_mainstack; 910 c->mainstack = PL_mainstack;
592 911
593 { 912 {
594 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 913 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
595 914
596 slot->defav = GvAV (PL_defgv); 915#if CORO_JIT
597 slot->defsv = DEFSV; 916 save_perl_slots (slot);
598 slot->errsv = ERRSV; 917#else
599 slot->irsgv = GvSV (irsgv);
600
601 #define VAR(name,type) slot->name = PL_ ## name; 918 #define VARx(name,expr,type) slot->name = expr;
602 # include "state.h" 919 #include "state.h"
603 #undef VAR 920#endif
604 } 921 }
605} 922}
606 923
607/* 924/*
608 * allocate various perl stacks. This is almost an exact copy 925 * allocate various perl stacks. This is almost an exact copy
609 * of perl.c:init_stacks, except that it uses less memory 926 * of perl.c:init_stacks, except that it uses less memory
610 * on the (sometimes correct) assumption that coroutines do 927 * on the (sometimes correct) assumption that coroutines do
611 * not usually need a lot of stackspace. 928 * not usually need a lot of stackspace.
612 */ 929 */
613#if CORO_PREFER_PERL_FUNCTIONS 930#if CORO_PREFER_PERL_FUNCTIONS
614# define coro_init_stacks init_stacks 931# define coro_init_stacks(thx) init_stacks ()
615#else 932#else
616static void 933static void
617coro_init_stacks (pTHX) 934coro_init_stacks (pTHX)
618{ 935{
619 PL_curstackinfo = new_stackinfo(32, 8); 936 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
620 PL_curstackinfo->si_type = PERLSI_MAIN; 937 PL_curstackinfo->si_type = PERLSI_MAIN;
621 PL_curstack = PL_curstackinfo->si_stack; 938 PL_curstack = PL_curstackinfo->si_stack;
622 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 939 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
623 940
624 PL_stack_base = AvARRAY(PL_curstack); 941 PL_stack_base = AvARRAY(PL_curstack);
… …
639#endif 956#endif
640 957
641 New(54,PL_scopestack,8,I32); 958 New(54,PL_scopestack,8,I32);
642 PL_scopestack_ix = 0; 959 PL_scopestack_ix = 0;
643 PL_scopestack_max = 8; 960 PL_scopestack_max = 8;
961#if HAS_SCOPESTACK_NAME
962 New(54,PL_scopestack_name,8,const char*);
963#endif
644 964
645 New(54,PL_savestack,24,ANY); 965 New(54,PL_savestack,24,ANY);
646 PL_savestack_ix = 0; 966 PL_savestack_ix = 0;
647 PL_savestack_max = 24; 967 PL_savestack_max = 24;
648 968
… …
676 } 996 }
677 997
678 Safefree (PL_tmps_stack); 998 Safefree (PL_tmps_stack);
679 Safefree (PL_markstack); 999 Safefree (PL_markstack);
680 Safefree (PL_scopestack); 1000 Safefree (PL_scopestack);
1001#if HAS_SCOPESTACK_NAME
1002 Safefree (PL_scopestack_name);
1003#endif
681 Safefree (PL_savestack); 1004 Safefree (PL_savestack);
682#if !PERL_VERSION_ATLEAST (5,10,0) 1005#if !PERL_VERSION_ATLEAST (5,10,0)
683 Safefree (PL_retstack); 1006 Safefree (PL_retstack);
684#endif 1007#endif
685} 1008}
686 1009
1010#define CORO_RSS \
1011 rss += sizeof (SYM (curstackinfo)); \
1012 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
1013 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
1014 rss += SYM (tmps_max) * sizeof (SV *); \
1015 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
1016 rss += SYM (scopestack_max) * sizeof (I32); \
1017 rss += SYM (savestack_max) * sizeof (ANY);
1018
687static size_t 1019static size_t
688coro_rss (pTHX_ struct coro *coro) 1020coro_rss (pTHX_ struct coro *coro)
689{ 1021{
690 size_t rss = sizeof (*coro); 1022 size_t rss = sizeof (*coro);
691 1023
692 if (coro->mainstack) 1024 if (coro->mainstack)
693 { 1025 {
694 perl_slots tmp_slot;
695 perl_slots *slot;
696
697 if (coro->flags & CF_RUNNING) 1026 if (coro->flags & CF_RUNNING)
698 { 1027 {
699 slot = &tmp_slot; 1028 #define SYM(sym) PL_ ## sym
700 1029 CORO_RSS;
701 #define VAR(name,type) slot->name = PL_ ## name;
702 # include "state.h"
703 #undef VAR 1030 #undef SYM
704 } 1031 }
705 else 1032 else
706 slot = coro->slot;
707
708 if (slot)
709 { 1033 {
710 rss += sizeof (slot->curstackinfo); 1034 #define SYM(sym) coro->slot->sym
711 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1035 CORO_RSS;
712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1036 #undef SYM
713 rss += slot->tmps_max * sizeof (SV *);
714 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
715 rss += slot->scopestack_max * sizeof (I32);
716 rss += slot->savestack_max * sizeof (ANY);
717
718#if !PERL_VERSION_ATLEAST (5,10,0)
719 rss += slot->retstack_max * sizeof (OP *);
720#endif
721 } 1037 }
722 } 1038 }
723 1039
724 return rss; 1040 return rss;
725} 1041}
… …
738#endif 1054#endif
739 1055
740/* 1056/*
741 * This overrides the default magic get method of %SIG elements. 1057 * This overrides the default magic get method of %SIG elements.
742 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1058 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
743 * and instead of tryign to save and restore the hash elements, we just provide 1059 * and instead of trying to save and restore the hash elements (extremely slow),
744 * readback here. 1060 * we just provide our own readback here.
745 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
746 * not expecting this to actually change the hook. This is a potential problem
747 * when a schedule happens then, but we ignore this.
748 */ 1061 */
749static int 1062static int ecb_cold
750coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1063coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
751{ 1064{
752 const char *s = MgPV_nolen_const (mg); 1065 const char *s = MgPV_nolen_const (mg);
753 1066
754 if (*s == '_') 1067 if (*s == '_')
755 { 1068 {
756 SV **svp = 0; 1069 SV **svp = 0;
757 1070
758 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1071 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
759 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1072 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
760 1073
761 if (svp) 1074 if (svp)
762 { 1075 {
763 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1076 SV *ssv;
1077
1078 if (!*svp)
1079 ssv = &PL_sv_undef;
1080 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1081 ssv = sv_2mortal (newRV_inc (*svp));
1082 else
1083 ssv = *svp;
1084
1085 sv_setsv (sv, ssv);
764 return 0; 1086 return 0;
765 } 1087 }
766 } 1088 }
767 1089
768 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1090 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
769} 1091}
770 1092
771static int 1093static int ecb_cold
772coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1094coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
773{ 1095{
774 const char *s = MgPV_nolen_const (mg); 1096 const char *s = MgPV_nolen_const (mg);
775 1097
776 if (*s == '_') 1098 if (*s == '_')
… …
790 } 1112 }
791 1113
792 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1114 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
793} 1115}
794 1116
795static int 1117static int ecb_cold
796coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1118coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
797{ 1119{
798 const char *s = MgPV_nolen_const (mg); 1120 const char *s = MgPV_nolen_const (mg);
799 1121
800 if (*s == '_') 1122 if (*s == '_')
… …
805 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1127 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
806 1128
807 if (svp) 1129 if (svp)
808 { 1130 {
809 SV *old = *svp; 1131 SV *old = *svp;
810 *svp = newSVsv (sv); 1132 *svp = SvOK (sv) ? newSVsv (sv) : 0;
811 SvREFCNT_dec (old); 1133 SvREFCNT_dec (old);
812 return 0; 1134 return 0;
813 } 1135 }
814 } 1136 }
815 1137
… …
827slf_check_nop (pTHX_ struct CoroSLF *frame) 1149slf_check_nop (pTHX_ struct CoroSLF *frame)
828{ 1150{
829 return 0; 1151 return 0;
830} 1152}
831 1153
832static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1154static int
1155slf_check_repeat (pTHX_ struct CoroSLF *frame)
1156{
1157 return 1;
1158}
1159
1160static UNOP init_perl_op;
1161
1162ecb_noinline static void /* noinline to keep it out of the transfer fast path */
833coro_setup (pTHX_ struct coro *coro) 1163init_perl (pTHX_ struct coro *coro)
834{ 1164{
835 /* 1165 /*
836 * emulate part of the perl startup here. 1166 * emulate part of the perl startup here.
837 */ 1167 */
838 coro_init_stacks (aTHX); 1168 coro_init_stacks (aTHX);
839 1169
840 PL_runops = RUNOPS_DEFAULT; 1170 PL_runops = RUNOPS_DEFAULT;
841 PL_curcop = &PL_compiling; 1171 PL_curcop = &PL_compiling;
842 PL_in_eval = EVAL_NULL; 1172 PL_in_eval = EVAL_NULL;
843 PL_comppad = 0; 1173 PL_comppad = 0;
1174 PL_comppad_name = 0;
1175 PL_comppad_name_fill = 0;
1176 PL_comppad_name_floor = 0;
844 PL_curpm = 0; 1177 PL_curpm = 0;
845 PL_curpad = 0; 1178 PL_curpad = 0;
846 PL_localizing = 0; 1179 PL_localizing = 0;
847 PL_dirty = 0;
848 PL_restartop = 0; 1180 PL_restartop = 0;
849#if PERL_VERSION_ATLEAST (5,10,0) 1181#if PERL_VERSION_ATLEAST (5,10,0)
850 PL_parser = 0; 1182 PL_parser = 0;
851#endif 1183#endif
1184 PL_hints = 0;
852 1185
853 /* recreate the die/warn hooks */ 1186 /* recreate the die/warn hooks */
854 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1187 PL_diehook = SvREFCNT_inc (rv_diehook);
855 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1188 PL_warnhook = SvREFCNT_inc (rv_warnhook);
856 1189
857 GvSV (PL_defgv) = newSV (0); 1190 GvSV (PL_defgv) = newSV (0);
858 GvAV (PL_defgv) = coro->args; coro->args = 0; 1191 GvAV (PL_defgv) = coro->args; coro->args = 0;
859 GvSV (PL_errgv) = newSV (0); 1192 GvSV (PL_errgv) = newSV (0);
860 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1193 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1194 GvHV (PL_hintgv) = newHV ();
1195#if PERL_VERSION_ATLEAST (5,10,0)
1196 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1197#endif
861 PL_rs = newSVsv (GvSV (irsgv)); 1198 PL_rs = newSVsv (GvSV (irsgv));
862 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1199 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
863 1200
864 { 1201 {
865 dSP; 1202 dSP;
866 UNOP myop; 1203 UNOP myop;
867 1204
868 Zero (&myop, 1, UNOP); 1205 Zero (&myop, 1, UNOP);
869 myop.op_next = Nullop; 1206 myop.op_next = Nullop;
1207 myop.op_type = OP_ENTERSUB;
870 myop.op_flags = OPf_WANT_VOID; 1208 myop.op_flags = OPf_WANT_VOID;
871 1209
872 PUSHMARK (SP); 1210 PUSHMARK (SP);
873 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1211 PUSHs ((SV *)coro->startcv);
874 PUTBACK; 1212 PUTBACK;
875 PL_op = (OP *)&myop; 1213 PL_op = (OP *)&myop;
876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1214 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
877 SPAGAIN;
878 } 1215 }
879 1216
880 /* this newly created coroutine might be run on an existing cctx which most 1217 /* this newly created coroutine might be run on an existing cctx which most
881 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1218 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
882 */ 1219 */
883 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1220 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
884 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1221 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1222 slf_frame.destroy = 0;
885 1223
886 coro_throw = coro->throw; 1224 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
887} 1225 init_perl_op.op_next = PL_op;
1226 init_perl_op.op_type = OP_ENTERSUB;
1227 init_perl_op.op_ppaddr = pp_slf;
1228 /* no flags etc. required, as an init function won't be called */
888 1229
1230 PL_op = (OP *)&init_perl_op;
1231
1232 /* copy throw, in case it was set before init_perl */
1233 CORO_THROW = coro->except;
1234
1235 SWAP_SVS_ENTER (coro);
1236
1237 if (ecb_expect_false (enable_times))
1238 {
1239 coro_times_update ();
1240 coro_times_sub (coro);
1241 }
1242}
1243
889static void 1244static void
890coro_destruct (pTHX_ struct coro *coro) 1245coro_unwind_stacks (pTHX)
891{ 1246{
892 if (!IN_DESTRUCT) 1247 if (!IN_DESTRUCT)
893 { 1248 {
894 /* restore all saved variables and stuff */ 1249 /* restore all saved variables and stuff */
895 LEAVE_SCOPE (0); 1250 LEAVE_SCOPE (0);
… …
903 POPSTACK_TO (PL_mainstack); 1258 POPSTACK_TO (PL_mainstack);
904 1259
905 /* unwind main stack */ 1260 /* unwind main stack */
906 dounwind (-1); 1261 dounwind (-1);
907 } 1262 }
1263}
908 1264
909 SvREFCNT_dec (GvSV (PL_defgv)); 1265static void
910 SvREFCNT_dec (GvAV (PL_defgv)); 1266destroy_perl (pTHX_ struct coro *coro)
911 SvREFCNT_dec (GvSV (PL_errgv)); 1267{
912 SvREFCNT_dec (PL_defoutgv); 1268 SV *svf [9];
913 SvREFCNT_dec (PL_rs);
914 SvREFCNT_dec (GvSV (irsgv));
915 1269
916 SvREFCNT_dec (PL_diehook);
917 SvREFCNT_dec (PL_warnhook);
918 1270 {
1271 SV *old_current = SvRV (coro_current);
1272 struct coro *current = SvSTATE (old_current);
1273
1274 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1275
1276 save_perl (aTHX_ current);
1277
1278 /* this will cause transfer_check to croak on block*/
1279 SvRV_set (coro_current, (SV *)coro->hv);
1280
1281 load_perl (aTHX_ coro);
1282
1283 /* restore swapped sv's */
1284 SWAP_SVS_LEAVE (coro);
1285
1286 coro_unwind_stacks (aTHX);
1287
1288 coro_destruct_stacks (aTHX);
1289
1290 /* now save some sv's to be free'd later */
1291 svf [0] = GvSV (PL_defgv);
1292 svf [1] = (SV *)GvAV (PL_defgv);
1293 svf [2] = GvSV (PL_errgv);
1294 svf [3] = (SV *)PL_defoutgv;
1295 svf [4] = PL_rs;
1296 svf [5] = GvSV (irsgv);
1297 svf [6] = (SV *)GvHV (PL_hintgv);
1298 svf [7] = PL_diehook;
1299 svf [8] = PL_warnhook;
1300 assert (9 == sizeof (svf) / sizeof (*svf));
1301
1302 SvRV_set (coro_current, old_current);
1303
1304 load_perl (aTHX_ current);
1305 }
1306
1307 {
1308 unsigned int i;
1309
1310 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1311 SvREFCNT_dec (svf [i]);
1312
919 SvREFCNT_dec (coro->saved_deffh); 1313 SvREFCNT_dec (coro->saved_deffh);
920 SvREFCNT_dec (coro_throw); 1314 SvREFCNT_dec (coro->rouse_cb);
921 1315 SvREFCNT_dec (coro->invoke_cb);
922 coro_destruct_stacks (aTHX); 1316 SvREFCNT_dec (coro->invoke_av);
1317 SvREFCNT_dec (coro->on_enter_xs);
1318 SvREFCNT_dec (coro->on_leave_xs);
1319 }
923} 1320}
924 1321
925INLINE void 1322ecb_inline void
926free_coro_mortal (pTHX) 1323free_coro_mortal (pTHX)
927{ 1324{
928 if (expect_true (coro_mortal)) 1325 if (ecb_expect_true (coro_mortal))
929 { 1326 {
930 SvREFCNT_dec (coro_mortal); 1327 SvREFCNT_dec ((SV *)coro_mortal);
931 coro_mortal = 0; 1328 coro_mortal = 0;
932 } 1329 }
933} 1330}
934 1331
935static int 1332static int
936runops_trace (pTHX) 1333runops_trace (pTHX)
937{ 1334{
938 COP *oldcop = 0; 1335 COP *oldcop = 0;
939 int oldcxix = -2; 1336 int oldcxix = -2;
940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
941 coro_cctx *cctx = coro->cctx;
942 1337
943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1338 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
944 { 1339 {
945 PERL_ASYNC_CHECK (); 1340 PERL_ASYNC_CHECK ();
946 1341
947 if (cctx->flags & CC_TRACE_ALL) 1342 if (cctx_current->flags & CC_TRACE_ALL)
948 { 1343 {
949 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1344 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
950 { 1345 {
951 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1346 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
952 SV **bot, **top; 1347 SV **bot, **top;
953 AV *av = newAV (); /* return values */ 1348 AV *av = newAV (); /* return values */
954 SV **cb; 1349 SV **cb;
… …
991 1386
992 if (PL_curcop != &PL_compiling) 1387 if (PL_curcop != &PL_compiling)
993 { 1388 {
994 SV **cb; 1389 SV **cb;
995 1390
996 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1391 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
997 { 1392 {
998 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1393 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
999 1394
1000 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1395 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1001 { 1396 {
1002 runops_proc_t old_runops = PL_runops;
1003 dSP; 1397 dSP;
1004 GV *gv = CvGV (cx->blk_sub.cv); 1398 GV *gv = CvGV (cx->blk_sub.cv);
1005 SV *fullname = sv_2mortal (newSV (0)); 1399 SV *fullname = sv_2mortal (newSV (0));
1006 1400
1007 if (isGV (gv)) 1401 if (isGV (gv))
… …
1012 SAVETMPS; 1406 SAVETMPS;
1013 EXTEND (SP, 3); 1407 EXTEND (SP, 3);
1014 PUSHMARK (SP); 1408 PUSHMARK (SP);
1015 PUSHs (&PL_sv_yes); 1409 PUSHs (&PL_sv_yes);
1016 PUSHs (fullname); 1410 PUSHs (fullname);
1017 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1411 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1018 PUTBACK; 1412 PUTBACK;
1019 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1413 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1020 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1414 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1021 SPAGAIN; 1415 SPAGAIN;
1022 FREETMPS; 1416 FREETMPS;
… …
1025 } 1419 }
1026 1420
1027 oldcxix = cxstack_ix; 1421 oldcxix = cxstack_ix;
1028 } 1422 }
1029 1423
1030 if (cctx->flags & CC_TRACE_LINE) 1424 if (cctx_current->flags & CC_TRACE_LINE)
1031 { 1425 {
1032 dSP; 1426 dSP;
1033 1427
1034 PL_runops = RUNOPS_DEFAULT; 1428 PL_runops = RUNOPS_DEFAULT;
1035 ENTER; 1429 ENTER;
… …
1054 1448
1055 TAINT_NOT; 1449 TAINT_NOT;
1056 return 0; 1450 return 0;
1057} 1451}
1058 1452
1453static struct CoroSLF cctx_ssl_frame;
1454
1059static void 1455static void
1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1456slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1061{ 1457{
1062 ta->prev = (struct coro *)cctx;
1063 ta->next = 0; 1458 ta->prev = 0;
1064} 1459}
1065 1460
1066/* inject a fake call to Coro::State::_cctx_init into the execution */ 1461static int
1067/* _cctx_init should be careful, as it could be called at almost any time */ 1462slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1068/* during execution of a perl program */
1069/* also initialises PL_top_env */
1070static void NOINLINE
1071cctx_prepare (pTHX_ coro_cctx *cctx)
1072{ 1463{
1073 dSP; 1464 *frame = cctx_ssl_frame;
1074 UNOP myop;
1075 1465
1466 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1467}
1468
1469/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1470static void ecb_noinline
1471cctx_prepare (pTHX)
1472{
1076 PL_top_env = &PL_start_env; 1473 PL_top_env = &PL_start_env;
1077 1474
1078 if (cctx->flags & CC_TRACE) 1475 if (cctx_current->flags & CC_TRACE)
1079 PL_runops = runops_trace; 1476 PL_runops = runops_trace;
1080 1477
1081 Zero (&myop, 1, UNOP); 1478 /* we already must be executing an SLF op, there is no other valid way
1082 myop.op_next = PL_op; 1479 * that can lead to creation of a new cctx */
1083 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1480 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1481 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1084 1482
1085 PUSHMARK (SP); 1483 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1086 EXTEND (SP, 2); 1484 cctx_ssl_frame = slf_frame;
1087 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1485
1088 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1486 slf_frame.prepare = slf_prepare_set_stacklevel;
1089 PUTBACK; 1487 slf_frame.check = slf_check_set_stacklevel;
1090 PL_op = (OP *)&myop;
1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1092 SPAGAIN;
1093} 1488}
1094 1489
1095/* the tail of transfer: execute stuff we can only do after a transfer */ 1490/* the tail of transfer: execute stuff we can only do after a transfer */
1096INLINE void 1491ecb_inline void
1097transfer_tail (pTHX) 1492transfer_tail (pTHX)
1098{ 1493{
1099 free_coro_mortal (aTHX); 1494 free_coro_mortal (aTHX);
1495}
1496
1497/* try to exit the same way perl's main function would do */
1498/* we do not bother resetting the environment or other things *7
1499/* that are not, uhm, essential */
1500/* this obviously also doesn't work when perl is embedded */
1501static void ecb_noinline ecb_cold
1502perlish_exit (pTHX)
1503{
1504 int exitstatus = perl_destruct (PL_curinterp);
1505 perl_free (PL_curinterp);
1506 exit (exitstatus);
1100} 1507}
1101 1508
1102/* 1509/*
1103 * this is a _very_ stripped down perl interpreter ;) 1510 * this is a _very_ stripped down perl interpreter ;)
1104 */ 1511 */
… …
1116 /* normally we would need to skip the entersub here */ 1523 /* normally we would need to skip the entersub here */
1117 /* not doing so will re-execute it, which is exactly what we want */ 1524 /* not doing so will re-execute it, which is exactly what we want */
1118 /* PL_nop = PL_nop->op_next */ 1525 /* PL_nop = PL_nop->op_next */
1119 1526
1120 /* inject a fake subroutine call to cctx_init */ 1527 /* inject a fake subroutine call to cctx_init */
1121 cctx_prepare (aTHX_ (coro_cctx *)arg); 1528 cctx_prepare (aTHX);
1122 1529
1123 /* cctx_run is the alternative tail of transfer() */ 1530 /* cctx_run is the alternative tail of transfer() */
1124 transfer_tail (aTHX); 1531 transfer_tail (aTHX);
1125 1532
1126 /* somebody or something will hit me for both perl_run and PL_restartop */ 1533 /* somebody or something will hit me for both perl_run and PL_restartop */
1127 PL_restartop = PL_op; 1534 PL_restartop = PL_op;
1128 perl_run (PL_curinterp); 1535 perl_run (PL_curinterp);
1536 /*
1537 * Unfortunately, there is no way to get at the return values of the
1538 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1539 * runtime errors here, as this is just a random interpreter, not a thread.
1540 */
1129 1541
1130 /* 1542 /*
1131 * If perl-run returns we assume exit() was being called or the coro 1543 * If perl-run returns we assume exit() was being called or the coro
1132 * fell off the end, which seems to be the only valid (non-bug) 1544 * fell off the end, which seems to be the only valid (non-bug)
1133 * reason for perl_run to return. We try to exit by jumping to the 1545 * reason for perl_run to return. We try to mimic whatever perl is normally
1134 * bootstrap-time "top" top_env, as we cannot restore the "main" 1546 * doing in that case. YMMV.
1135 * coroutine as Coro has no such concept
1136 */ 1547 */
1137 PL_top_env = main_top_env; 1548 perlish_exit (aTHX);
1138 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1139 } 1549 }
1140} 1550}
1141 1551
1142static coro_cctx * 1552static coro_cctx *
1143cctx_new () 1553cctx_new (void)
1144{ 1554{
1145 coro_cctx *cctx; 1555 coro_cctx *cctx;
1146 1556
1147 ++cctx_count; 1557 ++cctx_count;
1148 New (0, cctx, 1, coro_cctx); 1558 New (0, cctx, 1, coro_cctx);
… …
1154 return cctx; 1564 return cctx;
1155} 1565}
1156 1566
1157/* create a new cctx only suitable as source */ 1567/* create a new cctx only suitable as source */
1158static coro_cctx * 1568static coro_cctx *
1159cctx_new_empty () 1569cctx_new_empty (void)
1160{ 1570{
1161 coro_cctx *cctx = cctx_new (); 1571 coro_cctx *cctx = cctx_new ();
1162 1572
1163 cctx->sptr = 0; 1573 cctx->stack.sptr = 0;
1164 coro_create (&cctx->cctx, 0, 0, 0, 0); 1574 coro_create (&cctx->cctx, 0, 0, 0, 0);
1165 1575
1166 return cctx; 1576 return cctx;
1167} 1577}
1168 1578
1169/* create a new cctx suitable as destination/running a perl interpreter */ 1579/* create a new cctx suitable as destination/running a perl interpreter */
1170static coro_cctx * 1580static coro_cctx *
1171cctx_new_run () 1581cctx_new_run (void)
1172{ 1582{
1173 coro_cctx *cctx = cctx_new (); 1583 coro_cctx *cctx = cctx_new ();
1174 void *stack_start;
1175 size_t stack_size;
1176 1584
1177#if HAVE_MMAP 1585 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1178 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1179 /* mmap supposedly does allocate-on-write for us */
1180 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1181
1182 if (cctx->sptr != (void *)-1)
1183 {
1184 #if CORO_STACKGUARD
1185 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1186 #endif
1187 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1188 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1189 cctx->flags |= CC_MAPPED;
1190 } 1586 {
1191 else
1192#endif
1193 {
1194 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1195 New (0, cctx->sptr, cctx_stacksize, long);
1196
1197 if (!cctx->sptr)
1198 {
1199 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1587 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1200 _exit (EXIT_FAILURE); 1588 _exit (EXIT_FAILURE);
1201 }
1202
1203 stack_start = cctx->sptr;
1204 stack_size = cctx->ssize;
1205 } 1589 }
1206 1590
1207 #if CORO_USE_VALGRIND
1208 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1209 #endif
1210
1211 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1591 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1212 1592
1213 return cctx; 1593 return cctx;
1214} 1594}
1215 1595
1216static void 1596static void
1217cctx_destroy (coro_cctx *cctx) 1597cctx_destroy (coro_cctx *cctx)
1218{ 1598{
1219 if (!cctx) 1599 if (!cctx)
1220 return; 1600 return;
1221 1601
1602 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1603
1222 --cctx_count; 1604 --cctx_count;
1223 coro_destroy (&cctx->cctx); 1605 coro_destroy (&cctx->cctx);
1224 1606
1225 /* coro_transfer creates new, empty cctx's */ 1607 coro_stack_free (&cctx->stack);
1226 if (cctx->sptr)
1227 {
1228 #if CORO_USE_VALGRIND
1229 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1230 #endif
1231
1232#if HAVE_MMAP
1233 if (cctx->flags & CC_MAPPED)
1234 munmap (cctx->sptr, cctx->ssize);
1235 else
1236#endif
1237 Safefree (cctx->sptr);
1238 }
1239 1608
1240 Safefree (cctx); 1609 Safefree (cctx);
1241} 1610}
1242 1611
1243/* wether this cctx should be destructed */ 1612/* wether this cctx should be destructed */
1244#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1613#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1245 1614
1246static coro_cctx * 1615static coro_cctx *
1247cctx_get (pTHX) 1616cctx_get (pTHX)
1248{ 1617{
1249 while (expect_true (cctx_first)) 1618 while (ecb_expect_true (cctx_first))
1250 { 1619 {
1251 coro_cctx *cctx = cctx_first; 1620 coro_cctx *cctx = cctx_first;
1252 cctx_first = cctx->next; 1621 cctx_first = cctx->next;
1253 --cctx_idle; 1622 --cctx_idle;
1254 1623
1255 if (expect_true (!CCTX_EXPIRED (cctx))) 1624 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1256 return cctx; 1625 return cctx;
1257 1626
1258 cctx_destroy (cctx); 1627 cctx_destroy (cctx);
1259 } 1628 }
1260 1629
… …
1262} 1631}
1263 1632
1264static void 1633static void
1265cctx_put (coro_cctx *cctx) 1634cctx_put (coro_cctx *cctx)
1266{ 1635{
1267 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1636 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1268 1637
1269 /* free another cctx if overlimit */ 1638 /* free another cctx if overlimit */
1270 if (expect_false (cctx_idle >= cctx_max_idle)) 1639 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1271 { 1640 {
1272 coro_cctx *first = cctx_first; 1641 coro_cctx *first = cctx_first;
1273 cctx_first = first->next; 1642 cctx_first = first->next;
1274 --cctx_idle; 1643 --cctx_idle;
1275 1644
… …
1286static void 1655static void
1287transfer_check (pTHX_ struct coro *prev, struct coro *next) 1656transfer_check (pTHX_ struct coro *prev, struct coro *next)
1288{ 1657{
1289 /* TODO: throwing up here is considered harmful */ 1658 /* TODO: throwing up here is considered harmful */
1290 1659
1291 if (expect_true (prev != next)) 1660 if (ecb_expect_true (prev != next))
1292 { 1661 {
1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1662 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1294 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1663 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1295 1664
1296 if (expect_false (next->flags & CF_RUNNING)) 1665 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1298
1299 if (expect_false (next->flags & CF_DESTROYED))
1300 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1666 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1301 1667
1302#if !PERL_VERSION_ATLEAST (5,10,0) 1668#if !PERL_VERSION_ATLEAST (5,10,0)
1303 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1669 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1304 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1670 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1305#endif 1671#endif
1306 } 1672 }
1307} 1673}
1308 1674
1309/* always use the TRANSFER macro */ 1675/* always use the TRANSFER macro */
1310static void NOINLINE /* noinline so we have a fixed stackframe */ 1676static void ecb_noinline /* noinline so we have a fixed stackframe */
1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1677transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1312{ 1678{
1313 dSTACKLEVEL; 1679 dSTACKLEVEL;
1314 1680
1315 /* sometimes transfer is only called to set idle_sp */ 1681 /* sometimes transfer is only called to set idle_sp */
1316 if (expect_false (!next)) 1682 if (ecb_expect_false (!prev))
1317 { 1683 {
1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1684 cctx_current->idle_sp = STACKLEVEL;
1319 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1685 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1320 } 1686 }
1321 else if (expect_true (prev != next)) 1687 else if (ecb_expect_true (prev != next))
1322 { 1688 {
1323 coro_cctx *prev__cctx; 1689 coro_cctx *cctx_prev;
1324 1690
1325 if (expect_false (prev->flags & CF_NEW)) 1691 if (ecb_expect_false (prev->flags & CF_NEW))
1326 { 1692 {
1327 /* create a new empty/source context */ 1693 /* create a new empty/source context */
1328 prev->cctx = cctx_new_empty ();
1329 prev->flags &= ~CF_NEW; 1694 prev->flags &= ~CF_NEW;
1330 prev->flags |= CF_RUNNING; 1695 prev->flags |= CF_RUNNING;
1331 } 1696 }
1332 1697
1333 prev->flags &= ~CF_RUNNING; 1698 prev->flags &= ~CF_RUNNING;
1334 next->flags |= CF_RUNNING; 1699 next->flags |= CF_RUNNING;
1335 1700
1336 /* first get rid of the old state */ 1701 /* first get rid of the old state */
1337 save_perl (aTHX_ prev); 1702 save_perl (aTHX_ prev);
1338 1703
1339 if (expect_false (next->flags & CF_NEW)) 1704 if (ecb_expect_false (next->flags & CF_NEW))
1340 { 1705 {
1341 /* need to start coroutine */ 1706 /* need to start coroutine */
1342 next->flags &= ~CF_NEW; 1707 next->flags &= ~CF_NEW;
1343 /* setup coroutine call */ 1708 /* setup coroutine call */
1344 coro_setup (aTHX_ next); 1709 init_perl (aTHX_ next);
1345 } 1710 }
1346 else 1711 else
1347 load_perl (aTHX_ next); 1712 load_perl (aTHX_ next);
1348 1713
1349 prev__cctx = prev->cctx;
1350
1351 /* possibly untie and reuse the cctx */ 1714 /* possibly untie and reuse the cctx */
1352 if (expect_true ( 1715 if (ecb_expect_true (
1353 prev__cctx->idle_sp == (void *)stacklevel 1716 cctx_current->idle_sp == STACKLEVEL
1354 && !(prev__cctx->flags & CC_TRACE) 1717 && !(cctx_current->flags & CC_TRACE)
1355 && !force_cctx 1718 && !force_cctx
1356 )) 1719 ))
1357 { 1720 {
1358 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1721 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1359 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1722 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1360 1723
1361 prev->cctx = 0;
1362
1363 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1724 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1364 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1725 /* without this the next cctx_get might destroy the running cctx while still in use */
1365 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1726 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1366 if (!next->cctx) 1727 if (ecb_expect_true (!next->cctx))
1367 next->cctx = cctx_get (aTHX); 1728 next->cctx = cctx_get (aTHX);
1368 1729
1369 cctx_put (prev__cctx); 1730 cctx_put (cctx_current);
1370 } 1731 }
1732 else
1733 prev->cctx = cctx_current;
1371 1734
1372 ++next->usecount; 1735 ++next->usecount;
1373 1736
1374 if (expect_true (!next->cctx)) 1737 cctx_prev = cctx_current;
1375 next->cctx = cctx_get (aTHX); 1738 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1376 1739
1377 if (expect_false (prev__cctx != next->cctx)) 1740 next->cctx = 0;
1741
1742 if (ecb_expect_false (cctx_prev != cctx_current))
1378 { 1743 {
1379 prev__cctx->top_env = PL_top_env; 1744 cctx_prev->top_env = PL_top_env;
1380 PL_top_env = next->cctx->top_env; 1745 PL_top_env = cctx_current->top_env;
1381 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1746 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1382 } 1747 }
1383 1748
1384 transfer_tail (aTHX); 1749 transfer_tail (aTHX);
1385 } 1750 }
1386} 1751}
… …
1388#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1753#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1389#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1754#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1390 1755
1391/** high level stuff ********************************************************/ 1756/** high level stuff ********************************************************/
1392 1757
1758/* this function is actually Coro, not Coro::State, but we call it from here */
1759/* because it is convenient - but it hasn't been declared yet for that reason */
1393static int 1760static void
1761coro_call_on_destroy (pTHX_ struct coro *coro);
1762
1763static void
1394coro_state_destroy (pTHX_ struct coro *coro) 1764coro_state_destroy (pTHX_ struct coro *coro)
1395{ 1765{
1396 if (coro->flags & CF_DESTROYED) 1766 if (coro->flags & CF_ZOMBIE)
1397 return 0; 1767 return;
1398 1768
1399 if (coro->on_destroy)
1400 coro->on_destroy (aTHX_ coro); 1769 slf_destroy (aTHX_ coro);
1401 1770
1402 coro->flags |= CF_DESTROYED; 1771 coro->flags |= CF_ZOMBIE;
1403 1772
1404 if (coro->flags & CF_READY) 1773 if (coro->flags & CF_READY)
1405 { 1774 {
1406 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1775 /* reduce nready, as destroying a ready coro effectively unreadies it */
1407 /* alternative: look through all ready queues and remove the coro */ 1776 /* alternative: look through all ready queues and remove the coro */
1408 --coro_nready; 1777 --coro_nready;
1409 } 1778 }
1410 else 1779 else
1411 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1780 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1412 1781
1413 if (coro->mainstack && coro->mainstack != main_mainstack)
1414 {
1415 struct coro temp;
1416
1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1418
1419 save_perl (aTHX_ &temp);
1420 load_perl (aTHX_ coro);
1421
1422 coro_destruct (aTHX_ coro);
1423
1424 load_perl (aTHX_ &temp);
1425
1426 coro->slot = 0;
1427 }
1428
1429 cctx_destroy (coro->cctx);
1430 SvREFCNT_dec (coro->args);
1431
1432 if (coro->next) coro->next->prev = coro->prev; 1782 if (coro->next) coro->next->prev = coro->prev;
1433 if (coro->prev) coro->prev->next = coro->next; 1783 if (coro->prev) coro->prev->next = coro->next;
1434 if (coro == coro_first) coro_first = coro->next; 1784 if (coro == coro_first) coro_first = coro->next;
1435 1785
1436 return 1; 1786 if (coro->mainstack
1787 && coro->mainstack != main_mainstack
1788 && coro->slot
1789 && !PL_dirty)
1790 destroy_perl (aTHX_ coro);
1791
1792 cctx_destroy (coro->cctx);
1793 SvREFCNT_dec (coro->startcv);
1794 SvREFCNT_dec (coro->args);
1795 SvREFCNT_dec (coro->swap_sv);
1796 SvREFCNT_dec (CORO_THROW);
1797
1798 coro_call_on_destroy (aTHX_ coro);
1799
1800 /* more destruction mayhem in coro_state_free */
1437} 1801}
1438 1802
1439static int 1803static int
1440coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1804coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1441{ 1805{
1442 struct coro *coro = (struct coro *)mg->mg_ptr; 1806 struct coro *coro = (struct coro *)mg->mg_ptr;
1443 mg->mg_ptr = 0; 1807 mg->mg_ptr = 0;
1444 1808
1445 coro->hv = 0;
1446
1447 if (--coro->refcnt < 0)
1448 {
1449 coro_state_destroy (aTHX_ coro); 1809 coro_state_destroy (aTHX_ coro);
1810 SvREFCNT_dec (coro->on_destroy);
1811 SvREFCNT_dec (coro->status);
1812
1450 Safefree (coro); 1813 Safefree (coro);
1451 }
1452 1814
1453 return 0; 1815 return 0;
1454} 1816}
1455 1817
1456static int 1818static int ecb_cold
1457coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1819coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1458{ 1820{
1459 struct coro *coro = (struct coro *)mg->mg_ptr; 1821 /* called when perl clones the current process the slow way (windows process emulation) */
1460 1822 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1461 ++coro->refcnt; 1823 mg->mg_ptr = 0;
1824 mg->mg_virtual = 0;
1462 1825
1463 return 0; 1826 return 0;
1464} 1827}
1465 1828
1466static MGVTBL coro_state_vtbl = { 1829static MGVTBL coro_state_vtbl = {
… …
1491 TRANSFER (ta, 1); 1854 TRANSFER (ta, 1);
1492} 1855}
1493 1856
1494/** Coro ********************************************************************/ 1857/** Coro ********************************************************************/
1495 1858
1496INLINE void 1859ecb_inline void
1497coro_enq (pTHX_ struct coro *coro) 1860coro_enq (pTHX_ struct coro *coro)
1498{ 1861{
1499 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1862 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1500}
1501 1863
1502INLINE SV * 1864 SvREFCNT_inc_NN (coro->hv);
1865
1866 coro->next_ready = 0;
1867 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1868 ready [1] = coro;
1869}
1870
1871ecb_inline struct coro *
1503coro_deq (pTHX) 1872coro_deq (pTHX)
1504{ 1873{
1505 int prio; 1874 int prio;
1506 1875
1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1876 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1508 if (AvFILLp (coro_ready [prio]) >= 0) 1877 {
1509 return av_shift (coro_ready [prio]); 1878 struct coro **ready = coro_ready [prio];
1879
1880 if (ready [0])
1881 {
1882 struct coro *coro = ready [0];
1883 ready [0] = coro->next_ready;
1884 return coro;
1885 }
1886 }
1510 1887
1511 return 0; 1888 return 0;
1889}
1890
1891static void
1892invoke_sv_ready_hook_helper (void)
1893{
1894 dTHX;
1895 dSP;
1896
1897 ENTER;
1898 SAVETMPS;
1899
1900 PUSHMARK (SP);
1901 PUTBACK;
1902 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1903
1904 FREETMPS;
1905 LEAVE;
1512} 1906}
1513 1907
1514static int 1908static int
1515api_ready (pTHX_ SV *coro_sv) 1909api_ready (pTHX_ SV *coro_sv)
1516{ 1910{
1517 struct coro *coro;
1518 SV *sv_hook;
1519 void (*xs_hook)(void);
1520
1521 if (SvROK (coro_sv))
1522 coro_sv = SvRV (coro_sv);
1523
1524 coro = SvSTATE (coro_sv); 1911 struct coro *coro = SvSTATE (coro_sv);
1525 1912
1526 if (coro->flags & CF_READY) 1913 if (coro->flags & CF_READY)
1527 return 0; 1914 return 0;
1528 1915
1529 coro->flags |= CF_READY; 1916 coro->flags |= CF_READY;
1530 1917
1531 sv_hook = coro_nready ? 0 : coro_readyhook;
1532 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1533
1534 coro_enq (aTHX_ coro); 1918 coro_enq (aTHX_ coro);
1535 ++coro_nready;
1536 1919
1537 if (sv_hook) 1920 if (!coro_nready++)
1538 { 1921 if (coroapi.readyhook)
1539 dSP; 1922 coroapi.readyhook ();
1540
1541 ENTER;
1542 SAVETMPS;
1543
1544 PUSHMARK (SP);
1545 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD);
1547 SPAGAIN;
1548
1549 FREETMPS;
1550 LEAVE;
1551 }
1552
1553 if (xs_hook)
1554 xs_hook ();
1555 1923
1556 return 1; 1924 return 1;
1557} 1925}
1558 1926
1559static int 1927static int
1560api_is_ready (pTHX_ SV *coro_sv) 1928api_is_ready (pTHX_ SV *coro_sv)
1561{ 1929{
1562 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1930 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1563} 1931}
1564 1932
1565INLINE void 1933/* expects to own a reference to next->hv */
1934ecb_inline void
1566prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1935prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1567{ 1936{
1568 SV *prev_sv, *next_sv;
1569
1570 for (;;)
1571 {
1572 next_sv = coro_deq (aTHX);
1573
1574 /* nothing to schedule: call the idle handler */
1575 if (expect_false (!next_sv))
1576 {
1577 dSP;
1578
1579 ENTER;
1580 SAVETMPS;
1581
1582 PUSHMARK (SP);
1583 PUTBACK;
1584 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1585 SPAGAIN;
1586
1587 FREETMPS;
1588 LEAVE;
1589 continue;
1590 }
1591
1592 ta->next = SvSTATE_hv (next_sv);
1593
1594 /* cannot transfer to destroyed coros, skip and look for next */
1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1596 {
1597 SvREFCNT_dec (next_sv);
1598 /* coro_nready has already been taken care of by destroy */
1599 continue;
1600 }
1601
1602 --coro_nready;
1603 break;
1604 }
1605
1606 /* free this only after the transfer */
1607 prev_sv = SvRV (coro_current); 1937 SV *prev_sv = SvRV (coro_current);
1938
1608 ta->prev = SvSTATE_hv (prev_sv); 1939 ta->prev = SvSTATE_hv (prev_sv);
1940 ta->next = next;
1941
1609 TRANSFER_CHECK (*ta); 1942 TRANSFER_CHECK (*ta);
1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1943
1611 ta->next->flags &= ~CF_READY;
1612 SvRV_set (coro_current, next_sv); 1944 SvRV_set (coro_current, (SV *)next->hv);
1613 1945
1614 free_coro_mortal (aTHX); 1946 free_coro_mortal (aTHX);
1615 coro_mortal = prev_sv; 1947 coro_mortal = prev_sv;
1616} 1948}
1617 1949
1618INLINE void 1950static void
1951prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1952{
1953 for (;;)
1954 {
1955 struct coro *next = coro_deq (aTHX);
1956
1957 if (ecb_expect_true (next))
1958 {
1959 /* cannot transfer to destroyed coros, skip and look for next */
1960 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1961 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1962 else
1963 {
1964 next->flags &= ~CF_READY;
1965 --coro_nready;
1966
1967 prepare_schedule_to (aTHX_ ta, next);
1968 break;
1969 }
1970 }
1971 else
1972 {
1973 /* nothing to schedule: call the idle handler */
1974 if (SvROK (sv_idle)
1975 && SvOBJECT (SvRV (sv_idle)))
1976 {
1977 if (SvRV (sv_idle) == SvRV (coro_current))
1978 {
1979 require_pv ("Carp");
1980
1981 {
1982 dSP;
1983
1984 ENTER;
1985 SAVETMPS;
1986
1987 PUSHMARK (SP);
1988 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
1989 PUTBACK;
1990 call_pv ("Carp::confess", G_VOID | G_DISCARD);
1991
1992 FREETMPS;
1993 LEAVE;
1994 }
1995 }
1996
1997 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1998 api_ready (aTHX_ SvRV (sv_idle));
1999 --coro_nready;
2000 }
2001 else
2002 {
2003 /* TODO: deprecated, remove, cannot work reliably *//*D*/
2004 dSP;
2005
2006 ENTER;
2007 SAVETMPS;
2008
2009 PUSHMARK (SP);
2010 PUTBACK;
2011 call_sv (sv_idle, G_VOID | G_DISCARD);
2012
2013 FREETMPS;
2014 LEAVE;
2015 }
2016 }
2017 }
2018}
2019
2020ecb_inline void
1619prepare_cede (pTHX_ struct coro_transfer_args *ta) 2021prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620{ 2022{
1621 api_ready (aTHX_ coro_current); 2023 api_ready (aTHX_ coro_current);
1622 prepare_schedule (aTHX_ ta); 2024 prepare_schedule (aTHX_ ta);
1623} 2025}
1624 2026
1625INLINE void 2027ecb_inline void
1626prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2028prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1627{ 2029{
1628 SV *prev = SvRV (coro_current); 2030 SV *prev = SvRV (coro_current);
1629 2031
1630 if (coro_nready) 2032 if (coro_nready)
… …
1643 2045
1644 prepare_schedule (aTHX_ &ta); 2046 prepare_schedule (aTHX_ &ta);
1645 TRANSFER (ta, 1); 2047 TRANSFER (ta, 1);
1646} 2048}
1647 2049
2050static void
2051api_schedule_to (pTHX_ SV *coro_sv)
2052{
2053 struct coro_transfer_args ta;
2054 struct coro *next = SvSTATE (coro_sv);
2055
2056 SvREFCNT_inc_NN (coro_sv);
2057 prepare_schedule_to (aTHX_ &ta, next);
2058}
2059
1648static int 2060static int
1649api_cede (pTHX) 2061api_cede (pTHX)
1650{ 2062{
1651 struct coro_transfer_args ta; 2063 struct coro_transfer_args ta;
1652 2064
1653 prepare_cede (aTHX_ &ta); 2065 prepare_cede (aTHX_ &ta);
1654 2066
1655 if (expect_true (ta.prev != ta.next)) 2067 if (ecb_expect_true (ta.prev != ta.next))
1656 { 2068 {
1657 TRANSFER (ta, 1); 2069 TRANSFER (ta, 1);
1658 return 1; 2070 return 1;
1659 } 2071 }
1660 else 2072 else
… …
1679static void 2091static void
1680api_trace (pTHX_ SV *coro_sv, int flags) 2092api_trace (pTHX_ SV *coro_sv, int flags)
1681{ 2093{
1682 struct coro *coro = SvSTATE (coro_sv); 2094 struct coro *coro = SvSTATE (coro_sv);
1683 2095
2096 if (coro->flags & CF_RUNNING)
2097 croak ("cannot enable tracing on a running coroutine, caught");
2098
1684 if (flags & CC_TRACE) 2099 if (flags & CC_TRACE)
1685 { 2100 {
1686 if (!coro->cctx) 2101 if (!coro->cctx)
1687 coro->cctx = cctx_new_run (); 2102 coro->cctx = cctx_new_run ();
1688 else if (!(coro->cctx->flags & CC_TRACE)) 2103 else if (!(coro->cctx->flags & CC_TRACE))
1689 croak ("cannot enable tracing on coroutine with custom stack,"); 2104 croak ("cannot enable tracing on coroutine with custom stack, caught");
1690 2105
1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2106 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1692 } 2107 }
1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2108 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1694 { 2109 {
… …
1699 else 2114 else
1700 coro->slot->runops = RUNOPS_DEFAULT; 2115 coro->slot->runops = RUNOPS_DEFAULT;
1701 } 2116 }
1702} 2117}
1703 2118
2119static void
2120coro_push_av (pTHX_ AV *av, I32 gimme_v)
2121{
2122 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2123 {
2124 dSP;
2125
2126 if (gimme_v == G_SCALAR)
2127 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2128 else
2129 {
2130 int i;
2131 EXTEND (SP, AvFILLp (av) + 1);
2132
2133 for (i = 0; i <= AvFILLp (av); ++i)
2134 PUSHs (AvARRAY (av)[i]);
2135 }
2136
2137 PUTBACK;
2138 }
2139}
2140
2141static void
2142coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2143{
2144 if (!coro->on_destroy)
2145 coro->on_destroy = newAV ();
2146
2147 av_push (coro->on_destroy, cb);
2148}
2149
2150static void
2151slf_destroy_join (pTHX_ struct CoroSLF *frame)
2152{
2153 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2154}
2155
2156static int
2157slf_check_join (pTHX_ struct CoroSLF *frame)
2158{
2159 struct coro *coro = (struct coro *)frame->data;
2160
2161 if (!coro->status)
2162 return 1;
2163
2164 frame->destroy = 0;
2165
2166 coro_push_av (aTHX_ coro->status, GIMME_V);
2167
2168 SvREFCNT_dec ((SV *)coro->hv);
2169
2170 return 0;
2171}
2172
2173static void
2174slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2175{
2176 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2177
2178 if (items > 1)
2179 croak ("join called with too many arguments");
2180
2181 if (coro->status)
2182 frame->prepare = prepare_nop;
2183 else
2184 {
2185 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2186 frame->prepare = prepare_schedule;
2187 }
2188
2189 frame->check = slf_check_join;
2190 frame->destroy = slf_destroy_join;
2191 frame->data = (void *)coro;
2192 SvREFCNT_inc (coro->hv);
2193}
2194
2195static void
2196coro_call_on_destroy (pTHX_ struct coro *coro)
2197{
2198 AV *od = coro->on_destroy;
2199
2200 if (!od)
2201 return;
2202
2203 coro->on_destroy = 0;
2204 sv_2mortal ((SV *)od);
2205
2206 while (AvFILLp (od) >= 0)
2207 {
2208 SV *cb = sv_2mortal (av_pop (od));
2209
2210 /* coro hv's (and only hv's at the moment) are supported as well */
2211 if (SvSTATEhv_p (aTHX_ cb))
2212 api_ready (aTHX_ cb);
2213 else
2214 {
2215 dSP; /* don't disturb outer sp */
2216 PUSHMARK (SP);
2217
2218 if (coro->status)
2219 {
2220 PUTBACK;
2221 coro_push_av (aTHX_ coro->status, G_ARRAY);
2222 SPAGAIN;
2223 }
2224
2225 PUTBACK;
2226 call_sv (cb, G_VOID | G_DISCARD);
2227 }
2228 }
2229}
2230
2231static void
2232coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2233{
2234 AV *av;
2235
2236 if (coro->status)
2237 {
2238 av = coro->status;
2239 av_clear (av);
2240 }
2241 else
2242 av = coro->status = newAV ();
2243
2244 /* items are actually not so common, so optimise for this case */
2245 if (items)
2246 {
2247 int i;
2248
2249 av_extend (av, items - 1);
2250
2251 for (i = 0; i < items; ++i)
2252 av_push (av, SvREFCNT_inc_NN (arg [i]));
2253 }
2254}
2255
2256static void
2257slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2258{
2259 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2260 api_ready (aTHX_ sv_manager);
2261
2262 frame->prepare = prepare_schedule;
2263 frame->check = slf_check_repeat;
2264
2265 /* as a minor optimisation, we could unwind all stacks here */
2266 /* but that puts extra pressure on pp_slf, and is not worth much */
2267 /*coro_unwind_stacks (aTHX);*/
2268}
2269
2270static void
2271slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2272{
2273 HV *coro_hv = (HV *)SvRV (coro_current);
2274
2275 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2276 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2277}
2278
2279static void
2280slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2281{
2282 HV *coro_hv;
2283 struct coro *coro;
2284
2285 if (items <= 0)
2286 croak ("Coro::cancel called without coro object,");
2287
2288 coro = SvSTATE (arg [0]);
2289 coro_hv = coro->hv;
2290
2291 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2292
2293 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2294 {
2295 /* coro currently busy cancelling something, so just notify it */
2296 coro->slf_frame.data = (void *)coro;
2297
2298 frame->prepare = prepare_nop;
2299 frame->check = slf_check_nop;
2300 }
2301 else if (coro_hv == (HV *)SvRV (coro_current))
2302 {
2303 /* cancelling the current coro is allowed, and equals terminate */
2304 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2305 }
2306 else
2307 {
2308 struct coro *self = SvSTATE_current;
2309
2310 if (!self)
2311 croak ("Coro::cancel called outside of thread content,");
2312
2313 /* otherwise we cancel directly, purely for speed reasons
2314 * unfortunately, this requires some magic trickery, as
2315 * somebody else could cancel us, so we have to fight the cancellation.
2316 * this is ugly, and hopefully fully worth the extra speed.
2317 * besides, I can't get the slow-but-safe version working...
2318 */
2319 slf_frame.data = 0;
2320 self->flags |= CF_NOCANCEL;
2321 coro_state_destroy (aTHX_ coro);
2322 self->flags &= ~CF_NOCANCEL;
2323
2324 if (slf_frame.data)
2325 {
2326 /* while we were busy we have been cancelled, so terminate */
2327 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2328 }
2329 else
2330 {
2331 frame->prepare = prepare_nop;
2332 frame->check = slf_check_nop;
2333 }
2334 }
2335}
2336
2337static int
2338slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2339{
2340 frame->prepare = 0;
2341 coro_unwind_stacks (aTHX);
2342
2343 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2344
2345 return 1;
2346}
2347
2348static int
2349safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2350{
2351 if (coro->cctx)
2352 croak ("coro inside C callback, unable to cancel at this time, caught");
2353
2354 if (coro->flags & CF_NEW)
2355 {
2356 coro_set_status (aTHX_ coro, arg, items);
2357 coro_state_destroy (aTHX_ coro);
2358 }
2359 else
2360 {
2361 if (!coro->slf_frame.prepare)
2362 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2363
2364 slf_destroy (aTHX_ coro);
2365
2366 coro_set_status (aTHX_ coro, arg, items);
2367 coro->slf_frame.prepare = prepare_nop;
2368 coro->slf_frame.check = slf_check_safe_cancel;
2369
2370 api_ready (aTHX_ (SV *)coro->hv);
2371 }
2372
2373 return 1;
2374}
2375
2376/*****************************************************************************/
2377/* async pool handler */
2378
2379static int
2380slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2381{
2382 HV *hv = (HV *)SvRV (coro_current);
2383 struct coro *coro = (struct coro *)frame->data;
2384
2385 if (!coro->invoke_cb)
2386 return 1; /* loop till we have invoke */
2387 else
2388 {
2389 hv_store (hv, "desc", sizeof ("desc") - 1,
2390 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2391
2392 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2393
2394 {
2395 dSP;
2396 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2397 PUTBACK;
2398 }
2399
2400 SvREFCNT_dec (GvAV (PL_defgv));
2401 GvAV (PL_defgv) = coro->invoke_av;
2402 coro->invoke_av = 0;
2403
2404 return 0;
2405 }
2406}
2407
2408static void
2409slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2410{
2411 HV *hv = (HV *)SvRV (coro_current);
2412 struct coro *coro = SvSTATE_hv ((SV *)hv);
2413
2414 if (ecb_expect_true (coro->saved_deffh))
2415 {
2416 /* subsequent iteration */
2417 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2418 coro->saved_deffh = 0;
2419
2420 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2421 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2422 {
2423 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2424 return;
2425 }
2426 else
2427 {
2428 av_clear (GvAV (PL_defgv));
2429 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2430
2431 if (ecb_expect_false (coro->swap_sv))
2432 {
2433 swap_svs_leave (coro);
2434 SvREFCNT_dec_NN (coro->swap_sv);
2435 coro->swap_sv = 0;
2436 }
2437
2438 coro->prio = 0;
2439
2440 if (coro->cctx && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2441 api_trace (aTHX_ coro_current, 0);
2442
2443 frame->prepare = prepare_schedule;
2444 av_push (av_async_pool, SvREFCNT_inc (hv));
2445 }
2446 }
2447 else
2448 {
2449 /* first iteration, simply fall through */
2450 frame->prepare = prepare_nop;
2451 }
2452
2453 frame->check = slf_check_pool_handler;
2454 frame->data = (void *)coro;
2455}
2456
2457/*****************************************************************************/
2458/* rouse callback */
2459
2460#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2461
2462static void
2463coro_rouse_callback (pTHX_ CV *cv)
2464{
2465 dXSARGS;
2466 SV *data = (SV *)S_GENSUB_ARG;
2467
2468 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2469 {
2470 /* first call, set args */
2471 SV *coro = SvRV (data);
2472 AV *av = newAV ();
2473
2474 SvRV_set (data, (SV *)av);
2475
2476 /* better take a full copy of the arguments */
2477 while (items--)
2478 av_store (av, items, newSVsv (ST (items)));
2479
2480 api_ready (aTHX_ coro);
2481 SvREFCNT_dec (coro);
2482 }
2483
2484 XSRETURN_EMPTY;
2485}
2486
2487static int
2488slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2489{
2490 SV *data = (SV *)frame->data;
2491
2492 if (CORO_THROW)
2493 return 0;
2494
2495 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2496 return 1;
2497
2498 /* now push all results on the stack */
2499 {
2500 dSP;
2501 AV *av = (AV *)SvRV (data);
2502 int i;
2503
2504 EXTEND (SP, AvFILLp (av) + 1);
2505 for (i = 0; i <= AvFILLp (av); ++i)
2506 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2507
2508 /* we have stolen the elements, so set length to zero and free */
2509 AvFILLp (av) = -1;
2510 av_undef (av);
2511
2512 PUTBACK;
2513 }
2514
2515 return 0;
2516}
2517
2518static void
2519slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2520{
2521 SV *cb;
2522
2523 if (items)
2524 cb = arg [0];
2525 else
2526 {
2527 struct coro *coro = SvSTATE_current;
2528
2529 if (!coro->rouse_cb)
2530 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2531
2532 cb = sv_2mortal (coro->rouse_cb);
2533 coro->rouse_cb = 0;
2534 }
2535
2536 if (!SvROK (cb)
2537 || SvTYPE (SvRV (cb)) != SVt_PVCV
2538 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2539 croak ("Coro::rouse_wait called with illegal callback argument,");
2540
2541 {
2542 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2543 SV *data = (SV *)S_GENSUB_ARG;
2544
2545 frame->data = (void *)data;
2546 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2547 frame->check = slf_check_rouse_wait;
2548 }
2549}
2550
2551static SV *
2552coro_new_rouse_cb (pTHX)
2553{
2554 HV *hv = (HV *)SvRV (coro_current);
2555 struct coro *coro = SvSTATE_hv (hv);
2556 SV *data = newRV_inc ((SV *)hv);
2557 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2558
2559 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2560 SvREFCNT_dec (data); /* magicext increases the refcount */
2561
2562 SvREFCNT_dec (coro->rouse_cb);
2563 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2564
2565 return cb;
2566}
2567
2568/*****************************************************************************/
2569/* schedule-like-function opcode (SLF) */
2570
2571static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2572static const CV *slf_cv;
2573static SV **slf_argv;
2574static int slf_argc, slf_arga; /* count, allocated */
2575static I32 slf_ax; /* top of stack, for restore */
2576
2577/* this restores the stack in the case we patched the entersub, to */
2578/* recreate the stack frame as perl will on following calls */
2579/* since entersub cleared the stack */
2580static OP *
2581pp_restore (pTHX)
2582{
2583 int i;
2584 SV **SP = PL_stack_base + slf_ax;
2585
2586 PUSHMARK (SP);
2587
2588 EXTEND (SP, slf_argc + 1);
2589
2590 for (i = 0; i < slf_argc; ++i)
2591 PUSHs (sv_2mortal (slf_argv [i]));
2592
2593 PUSHs ((SV *)CvGV (slf_cv));
2594
2595 RETURNOP (slf_restore.op_first);
2596}
2597
2598static void
2599slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2600{
2601 SV **arg = (SV **)slf_frame.data;
2602
2603 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2604}
2605
2606static void
2607slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2608{
2609 if (items != 2)
2610 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2611
2612 frame->prepare = slf_prepare_transfer;
2613 frame->check = slf_check_nop;
2614 frame->data = (void *)arg; /* let's hope it will stay valid */
2615}
2616
2617static void
2618slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2619{
2620 frame->prepare = prepare_schedule;
2621 frame->check = slf_check_nop;
2622}
2623
2624static void
2625slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2626{
2627 struct coro *next = (struct coro *)slf_frame.data;
2628
2629 SvREFCNT_inc_NN (next->hv);
2630 prepare_schedule_to (aTHX_ ta, next);
2631}
2632
2633static void
2634slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2635{
2636 if (!items)
2637 croak ("Coro::schedule_to expects a coroutine argument, caught");
2638
2639 frame->data = (void *)SvSTATE (arg [0]);
2640 frame->prepare = slf_prepare_schedule_to;
2641 frame->check = slf_check_nop;
2642}
2643
2644static void
2645slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2646{
2647 api_ready (aTHX_ SvRV (coro_current));
2648
2649 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2650}
2651
2652static void
2653slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2654{
2655 frame->prepare = prepare_cede;
2656 frame->check = slf_check_nop;
2657}
2658
2659static void
2660slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2661{
2662 frame->prepare = prepare_cede_notself;
2663 frame->check = slf_check_nop;
2664}
2665
2666/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2667static void
2668slf_destroy (pTHX_ struct coro *coro)
2669{
2670 struct CoroSLF frame = coro->slf_frame;
2671
2672 /*
2673 * The on_destroy below most likely is from an SLF call.
2674 * Since by definition the SLF call will not finish when we destroy
2675 * the coro, we will have to force-finish it here, otherwise
2676 * cleanup functions cannot call SLF functions.
2677 */
2678 coro->slf_frame.prepare = 0;
2679
2680 /* this callback is reserved for slf functions needing to do cleanup */
2681 if (frame.destroy && frame.prepare && !PL_dirty)
2682 frame.destroy (aTHX_ &frame);
2683}
2684
2685/*
2686 * these not obviously related functions are all rolled into one
2687 * function to increase chances that they all will call transfer with the same
2688 * stack offset
2689 * SLF stands for "schedule-like-function".
2690 */
2691static OP *
2692pp_slf (pTHX)
2693{
2694 I32 checkmark; /* mark SP to see how many elements check has pushed */
2695
2696 /* set up the slf frame, unless it has already been set-up */
2697 /* the latter happens when a new coro has been started */
2698 /* or when a new cctx was attached to an existing coroutine */
2699 if (ecb_expect_true (!slf_frame.prepare))
2700 {
2701 /* first iteration */
2702 dSP;
2703 SV **arg = PL_stack_base + TOPMARK + 1;
2704 int items = SP - arg; /* args without function object */
2705 SV *gv = *sp;
2706
2707 /* do a quick consistency check on the "function" object, and if it isn't */
2708 /* for us, divert to the real entersub */
2709 if (SvTYPE (gv) != SVt_PVGV
2710 || !GvCV (gv)
2711 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2712 return PL_ppaddr[OP_ENTERSUB](aTHX);
2713
2714 if (!(PL_op->op_flags & OPf_STACKED))
2715 {
2716 /* ampersand-form of call, use @_ instead of stack */
2717 AV *av = GvAV (PL_defgv);
2718 arg = AvARRAY (av);
2719 items = AvFILLp (av) + 1;
2720 }
2721
2722 /* now call the init function, which needs to set up slf_frame */
2723 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2724 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2725
2726 /* pop args */
2727 SP = PL_stack_base + POPMARK;
2728
2729 PUTBACK;
2730 }
2731
2732 /* now that we have a slf_frame, interpret it! */
2733 /* we use a callback system not to make the code needlessly */
2734 /* complicated, but so we can run multiple perl coros from one cctx */
2735
2736 do
2737 {
2738 struct coro_transfer_args ta;
2739
2740 slf_frame.prepare (aTHX_ &ta);
2741 TRANSFER (ta, 0);
2742
2743 checkmark = PL_stack_sp - PL_stack_base;
2744 }
2745 while (slf_frame.check (aTHX_ &slf_frame));
2746
2747 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2748
2749 /* exception handling */
2750 if (ecb_expect_false (CORO_THROW))
2751 {
2752 SV *exception = sv_2mortal (CORO_THROW);
2753
2754 CORO_THROW = 0;
2755 sv_setsv (ERRSV, exception);
2756 croak (0);
2757 }
2758
2759 /* return value handling - mostly like entersub */
2760 /* make sure we put something on the stack in scalar context */
2761 if (GIMME_V == G_SCALAR
2762 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2763 {
2764 dSP;
2765 SV **bot = PL_stack_base + checkmark;
2766
2767 if (sp == bot) /* too few, push undef */
2768 bot [1] = &PL_sv_undef;
2769 else /* too many, take last one */
2770 bot [1] = *sp;
2771
2772 SP = bot + 1;
2773
2774 PUTBACK;
2775 }
2776
2777 return NORMAL;
2778}
2779
2780static void
2781api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2782{
2783 int i;
2784 SV **arg = PL_stack_base + ax;
2785 int items = PL_stack_sp - arg + 1;
2786
2787 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2788
2789 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2790 && PL_op->op_ppaddr != pp_slf)
2791 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2792
2793 CvFLAGS (cv) |= CVf_SLF;
2794 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2795 slf_cv = cv;
2796
2797 /* we patch the op, and then re-run the whole call */
2798 /* we have to put the same argument on the stack for this to work */
2799 /* and this will be done by pp_restore */
2800 slf_restore.op_next = (OP *)&slf_restore;
2801 slf_restore.op_type = OP_CUSTOM;
2802 slf_restore.op_ppaddr = pp_restore;
2803 slf_restore.op_first = PL_op;
2804
2805 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2806
2807 if (PL_op->op_flags & OPf_STACKED)
2808 {
2809 if (items > slf_arga)
2810 {
2811 slf_arga = items;
2812 Safefree (slf_argv);
2813 New (0, slf_argv, slf_arga, SV *);
2814 }
2815
2816 slf_argc = items;
2817
2818 for (i = 0; i < items; ++i)
2819 slf_argv [i] = SvREFCNT_inc (arg [i]);
2820 }
2821 else
2822 slf_argc = 0;
2823
2824 PL_op->op_ppaddr = pp_slf;
2825 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2826
2827 PL_op = (OP *)&slf_restore;
2828}
2829
2830/*****************************************************************************/
2831/* dynamic wind */
2832
2833static void
2834on_enterleave_call (pTHX_ SV *cb)
2835{
2836 dSP;
2837
2838 PUSHSTACK;
2839
2840 PUSHMARK (SP);
2841 PUTBACK;
2842 call_sv (cb, G_VOID | G_DISCARD);
2843 SPAGAIN;
2844
2845 POPSTACK;
2846}
2847
2848static SV *
2849coro_avp_pop_and_free (pTHX_ AV **avp)
2850{
2851 AV *av = *avp;
2852 SV *res = av_pop (av);
2853
2854 if (AvFILLp (av) < 0)
2855 {
2856 *avp = 0;
2857 SvREFCNT_dec (av);
2858 }
2859
2860 return res;
2861}
2862
2863static void
2864coro_pop_on_enter (pTHX_ void *coro)
2865{
2866 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2867 SvREFCNT_dec (cb);
2868}
2869
2870static void
2871coro_pop_on_leave (pTHX_ void *coro)
2872{
2873 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2874 on_enterleave_call (aTHX_ sv_2mortal (cb));
2875}
2876
2877static void
2878enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2879{
2880 if (!hook)
2881 return;
2882
2883 if (!*avp)
2884 {
2885 *avp = newAV ();
2886 AvREAL_off (*avp);
2887 }
2888
2889 av_push (*avp, (SV *)hook);
2890 av_push (*avp, (SV *)arg);
2891}
2892
2893static void
2894enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2895{
2896 AV *av = *avp;
2897 int i;
2898
2899 if (!av)
2900 return;
2901
2902 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2903 if (AvARRAY (av)[i] == (SV *)hook)
2904 {
2905 if (execute)
2906 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2907
2908 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2909 av_pop (av);
2910 av_pop (av);
2911 break;
2912 }
2913
2914 if (AvFILLp (av) >= 0)
2915 {
2916 *avp = 0;
2917 SvREFCNT_dec_NN (av);
2918 }
2919}
2920
2921static void
2922api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2923{
2924 struct coro *coro = SvSTATE (coro_sv);
2925
2926 if (SvSTATE_current == coro)
2927 if (enter)
2928 enter (aTHX_ enter_arg);
2929
2930 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2931 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2932}
2933
2934static void
2935api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2936{
2937 struct coro *coro = SvSTATE (coro_sv);
2938
2939 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2940 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2941}
2942
2943static void
2944savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2945{
2946 struct coro *coro = SvSTATE_current;
2947
2948 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2949}
2950
2951static void
2952savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2953{
2954 struct coro *coro = SvSTATE_current;
2955
2956 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2957}
2958
2959static void
2960api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2961{
2962 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2963
2964 /* this ought to be much cheaper than malloc + a single destructor call */
2965 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2966 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2967}
2968
1704/*****************************************************************************/ 2969/*****************************************************************************/
1705/* PerlIO::cede */ 2970/* PerlIO::cede */
1706 2971
1707typedef struct 2972typedef struct
1708{ 2973{
1709 PerlIOBuf base; 2974 PerlIOBuf base;
1710 NV next, every; 2975 NV next, every;
1711} PerlIOCede; 2976} PerlIOCede;
1712 2977
1713static IV 2978static IV ecb_cold
1714PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2979PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1715{ 2980{
1716 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2981 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1717 2982
1718 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2983 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1719 self->next = nvtime () + self->every; 2984 self->next = nvtime () + self->every;
1720 2985
1721 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2986 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1722} 2987}
1723 2988
1724static SV * 2989static SV * ecb_cold
1725PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2990PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1726{ 2991{
1727 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2992 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1728 2993
1729 return newSVnv (self->every); 2994 return newSVnv (self->every);
… …
1775 PerlIOBuf_get_cnt, 3040 PerlIOBuf_get_cnt,
1776 PerlIOBuf_set_ptrcnt, 3041 PerlIOBuf_set_ptrcnt,
1777}; 3042};
1778 3043
1779/*****************************************************************************/ 3044/*****************************************************************************/
3045/* Coro::Semaphore & Coro::Signal */
1780 3046
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP * 3047static SV *
1791pp_restore (pTHX) 3048coro_waitarray_new (pTHX_ int count)
1792{ 3049{
1793 int i; 3050 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
1794 SV **SP = PL_stack_base + slf_ax; 3051 AV *av = newAV ();
3052 SV **ary;
1795 3053
1796 PUSHMARK (SP); 3054 /* unfortunately, building manually saves memory */
3055 Newx (ary, 2, SV *);
3056 AvALLOC (av) = ary;
3057#if PERL_VERSION_ATLEAST (5,10,0)
3058 AvARRAY (av) = ary;
3059#else
3060 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3061 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3062 SvPVX ((SV *)av) = (char *)ary;
3063#endif
3064 AvMAX (av) = 1;
3065 AvFILLp (av) = 0;
3066 ary [0] = newSViv (count);
1797 3067
1798 EXTEND (SP, slf_argc + 1); 3068 return newRV_noinc ((SV *)av);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806} 3069}
1807 3070
1808static void 3071/* semaphore */
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (PL_op->op_flags & OPf_STACKED)
1988 {
1989 if (items > slf_arga)
1990 {
1991 slf_arga = items;
1992 free (slf_argv);
1993 slf_argv = malloc (slf_arga * sizeof (SV *));
1994 }
1995
1996 slf_argc = items;
1997
1998 for (i = 0; i < items; ++i)
1999 slf_argv [i] = SvREFCNT_inc (arg [i]);
2000 }
2001 else
2002 slf_argc = 0;
2003
2004 PL_op->op_ppaddr = pp_slf;
2005 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2006
2007 PL_op = (OP *)&slf_restore;
2008}
2009
2010/*****************************************************************************/
2011 3072
2012static void 3073static void
2013coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 3074coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2014{ 3075{
2015 SV *count_sv = AvARRAY (av)[0]; 3076 SV *count_sv = AvARRAY (av)[0];
… …
2027 AvARRAY (av)[0] = AvARRAY (av)[1]; 3088 AvARRAY (av)[0] = AvARRAY (av)[1];
2028 AvARRAY (av)[1] = count_sv; 3089 AvARRAY (av)[1] = count_sv;
2029 cb = av_shift (av); 3090 cb = av_shift (av);
2030 3091
2031 if (SvOBJECT (cb)) 3092 if (SvOBJECT (cb))
3093 {
2032 api_ready (aTHX_ cb); 3094 api_ready (aTHX_ cb);
2033 else 3095 --count;
2034 croak ("callbacks not yet supported"); 3096 }
3097 else if (SvTYPE (cb) == SVt_PVCV)
3098 {
3099 dSP;
3100 PUSHMARK (SP);
3101 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3102 PUTBACK;
3103 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3104 }
2035 3105
2036 SvREFCNT_dec (cb); 3106 SvREFCNT_dec_NN (cb);
2037
2038 --count;
2039 } 3107 }
2040} 3108}
2041 3109
2042static void 3110static void
2043coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3111coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2044{ 3112{
2045 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3113 /* call $sem->adjust (0) to possibly wake up some other waiters */
2046 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3114 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2047} 3115}
2048 3116
2049static int 3117static int
2050slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3118slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2051{ 3119{
2052 AV *av = (AV *)frame->data; 3120 AV *av = (AV *)frame->data;
2053 SV *count_sv = AvARRAY (av)[0]; 3121 SV *count_sv = AvARRAY (av)[0];
3122 SV *coro_hv = SvRV (coro_current);
2054 3123
3124 frame->destroy = 0;
3125
3126 /* if we are about to throw, don't actually acquire the lock, just throw */
3127 if (ecb_expect_false (CORO_THROW))
3128 {
3129 /* we still might be responsible for the semaphore, so wake up others */
3130 coro_semaphore_adjust (aTHX_ av, 0);
3131
3132 return 0;
3133 }
2055 if (SvIVX (count_sv) > 0) 3134 else if (SvIVX (count_sv) > 0)
2056 { 3135 {
2057 SvSTATE_current->on_destroy = 0; 3136 if (acquire)
2058 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3137 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3138 else
3139 coro_semaphore_adjust (aTHX_ av, 0);
3140
2059 return 0; 3141 return 0;
2060 } 3142 }
2061 else 3143 else
2062 { 3144 {
2063 int i; 3145 int i;
2064 /* if we were woken up but can't down, we look through the whole */ 3146 /* if we were woken up but can't down, we look through the whole */
2065 /* waiters list and only add us if we aren't in there already */ 3147 /* waiters list and only add us if we aren't in there already */
2066 /* this avoids some degenerate memory usage cases */ 3148 /* this avoids some degenerate memory usage cases */
2067 3149 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2068 for (i = 1; i <= AvFILLp (av); ++i)
2069 if (AvARRAY (av)[i] == SvRV (coro_current)) 3150 if (AvARRAY (av)[i] == coro_hv)
2070 return 1; 3151 return 1;
2071 3152
2072 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3153 av_push (av, SvREFCNT_inc (coro_hv));
2073 return 1; 3154 return 1;
2074 } 3155 }
2075} 3156}
2076 3157
2077static void 3158static int
3159slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3160{
3161 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3162}
3163
3164static int
3165slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3166{
3167 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3168}
3169
3170static void
2078slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3171slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2079{ 3172{
2080 AV *av = (AV *)SvRV (arg [0]); 3173 AV *av = (AV *)SvRV (arg [0]);
2081 3174
2082 if (SvIVX (AvARRAY (av)[0]) > 0) 3175 if (SvIVX (AvARRAY (av)[0]) > 0)
2083 { 3176 {
2084 frame->data = (void *)av; 3177 frame->data = (void *)av;
2085 frame->prepare = prepare_nop; 3178 frame->prepare = prepare_nop;
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2087 } 3179 }
2088 else 3180 else
2089 { 3181 {
2090 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3182 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2091 3183
2092 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3184 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2093 frame->prepare = prepare_schedule; 3185 frame->prepare = prepare_schedule;
2094
2095 /* to avoid race conditions when a woken-up coro gets terminated */ 3186 /* to avoid race conditions when a woken-up coro gets terminated */
2096 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3187 /* we arrange for a temporary on_destroy that calls adjust (0) */
2097 assert (!SvSTATE_current->on_destroy);//D
2098 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3188 frame->destroy = coro_semaphore_destroy;
2099 } 3189 }
3190}
2100 3191
3192static void
3193slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3194{
3195 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2101 frame->check = slf_check_semaphore_down; 3196 frame->check = slf_check_semaphore_down;
3197}
2102 3198
3199static void
3200slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3201{
3202 if (items >= 2)
3203 {
3204 /* callback form */
3205 AV *av = (AV *)SvRV (arg [0]);
3206 SV *cb_cv = s_get_cv_croak (arg [1]);
3207
3208 av_push (av, SvREFCNT_inc_NN (cb_cv));
3209
3210 if (SvIVX (AvARRAY (av)[0]) > 0)
3211 coro_semaphore_adjust (aTHX_ av, 0);
3212
3213 frame->prepare = prepare_nop;
3214 frame->check = slf_check_nop;
3215 }
3216 else
3217 {
3218 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3219 frame->check = slf_check_semaphore_wait;
3220 }
3221}
3222
3223/* signal */
3224
3225static void
3226coro_signal_wake (pTHX_ AV *av, int count)
3227{
3228 SvIVX (AvARRAY (av)[0]) = 0;
3229
3230 /* now signal count waiters */
3231 while (count > 0 && AvFILLp (av) > 0)
3232 {
3233 SV *cb;
3234
3235 /* swap first two elements so we can shift a waiter */
3236 cb = AvARRAY (av)[0];
3237 AvARRAY (av)[0] = AvARRAY (av)[1];
3238 AvARRAY (av)[1] = cb;
3239
3240 cb = av_shift (av);
3241
3242 if (SvTYPE (cb) == SVt_PVCV)
3243 {
3244 dSP;
3245 PUSHMARK (SP);
3246 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3247 PUTBACK;
3248 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3249 }
3250 else
3251 {
3252 api_ready (aTHX_ cb);
3253 sv_setiv (cb, 0); /* signal waiter */
3254 }
3255
3256 SvREFCNT_dec_NN (cb);
3257
3258 --count;
3259 }
3260}
3261
3262static int
3263slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3264{
3265 /* if we are about to throw, also stop waiting */
3266 return SvROK ((SV *)frame->data) && !CORO_THROW;
3267}
3268
3269static void
3270slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3271{
3272 AV *av = (AV *)SvRV (arg [0]);
3273
3274 if (items >= 2)
3275 {
3276 SV *cb_cv = s_get_cv_croak (arg [1]);
3277 av_push (av, SvREFCNT_inc_NN (cb_cv));
3278
3279 if (SvIVX (AvARRAY (av)[0]))
3280 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3281
3282 frame->prepare = prepare_nop;
3283 frame->check = slf_check_nop;
3284 }
3285 else if (SvIVX (AvARRAY (av)[0]))
3286 {
3287 SvIVX (AvARRAY (av)[0]) = 0;
3288 frame->prepare = prepare_nop;
3289 frame->check = slf_check_nop;
3290 }
3291 else
3292 {
3293 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3294
3295 av_push (av, waiter);
3296
3297 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3298 frame->prepare = prepare_schedule;
3299 frame->check = slf_check_signal_wait;
3300 }
2103} 3301}
2104 3302
2105/*****************************************************************************/ 3303/*****************************************************************************/
3304/* Coro::AIO */
2106 3305
2107#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3306#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2108 3307
2109/* create a closure from XS, returns a code reference */ 3308/* helper storage struct */
2110/* the arg can be accessed via GENSUB_ARG from the callback */ 3309struct io_state
2111/* the callback must use dXSARGS/XSRETURN */ 3310{
3311 int errorno;
3312 I32 laststype; /* U16 in 5.10.0 */
3313 int laststatval;
3314 Stat_t statcache;
3315};
3316
3317static void
3318coro_aio_callback (pTHX_ CV *cv)
3319{
3320 dXSARGS;
3321 AV *state = (AV *)S_GENSUB_ARG;
3322 SV *coro = av_pop (state);
3323 SV *data_sv = newSV (sizeof (struct io_state));
3324
3325 av_extend (state, items - 1);
3326
3327 sv_upgrade (data_sv, SVt_PV);
3328 SvCUR_set (data_sv, sizeof (struct io_state));
3329 SvPOK_only (data_sv);
3330
3331 {
3332 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3333
3334 data->errorno = errno;
3335 data->laststype = PL_laststype;
3336 data->laststatval = PL_laststatval;
3337 data->statcache = PL_statcache;
3338 }
3339
3340 /* now build the result vector out of all the parameters and the data_sv */
3341 {
3342 int i;
3343
3344 for (i = 0; i < items; ++i)
3345 av_push (state, SvREFCNT_inc_NN (ST (i)));
3346 }
3347
3348 av_push (state, data_sv);
3349
3350 api_ready (aTHX_ coro);
3351 SvREFCNT_dec_NN (coro);
3352 SvREFCNT_dec_NN ((AV *)state);
3353}
3354
3355static int
3356slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3357{
3358 AV *state = (AV *)frame->data;
3359
3360 /* if we are about to throw, return early */
3361 /* this does not cancel the aio request, but at least */
3362 /* it quickly returns */
3363 if (CORO_THROW)
3364 return 0;
3365
3366 /* one element that is an RV? repeat! */
3367 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3368 return 1;
3369
3370 /* restore status */
3371 {
3372 SV *data_sv = av_pop (state);
3373 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3374
3375 errno = data->errorno;
3376 PL_laststype = data->laststype;
3377 PL_laststatval = data->laststatval;
3378 PL_statcache = data->statcache;
3379
3380 SvREFCNT_dec_NN (data_sv);
3381 }
3382
3383 /* push result values */
3384 {
3385 dSP;
3386 int i;
3387
3388 EXTEND (SP, AvFILLp (state) + 1);
3389 for (i = 0; i <= AvFILLp (state); ++i)
3390 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3391
3392 PUTBACK;
3393 }
3394
3395 return 0;
3396}
3397
3398static void
3399slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3400{
3401 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3402 SV *coro_hv = SvRV (coro_current);
3403 struct coro *coro = SvSTATE_hv (coro_hv);
3404
3405 /* put our coroutine id on the state arg */
3406 av_push (state, SvREFCNT_inc_NN (coro_hv));
3407
3408 /* first see whether we have a non-zero priority and set it as AIO prio */
3409 if (coro->prio)
3410 {
3411 dSP;
3412
3413 static SV *prio_cv;
3414 static SV *prio_sv;
3415
3416 if (ecb_expect_false (!prio_cv))
3417 {
3418 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3419 prio_sv = newSViv (0);
3420 }
3421
3422 PUSHMARK (SP);
3423 sv_setiv (prio_sv, coro->prio);
3424 XPUSHs (prio_sv);
3425
3426 PUTBACK;
3427 call_sv (prio_cv, G_VOID | G_DISCARD);
3428 }
3429
3430 /* now call the original request */
3431 {
3432 dSP;
3433 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3434 int i;
3435
3436 PUSHMARK (SP);
3437
3438 /* first push all args to the stack */
3439 EXTEND (SP, items + 1);
3440
3441 for (i = 0; i < items; ++i)
3442 PUSHs (arg [i]);
3443
3444 /* now push the callback closure */
3445 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3446
3447 /* now call the AIO function - we assume our request is uncancelable */
3448 PUTBACK;
3449 call_sv ((SV *)req, G_VOID | G_DISCARD);
3450 }
3451
3452 /* now that the request is going, we loop till we have a result */
3453 frame->data = (void *)state;
3454 frame->prepare = prepare_schedule;
3455 frame->check = slf_check_aio_req;
3456}
3457
3458static void
3459coro_aio_req_xs (pTHX_ CV *cv)
3460{
3461 dXSARGS;
3462
3463 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3464
3465 XSRETURN_EMPTY;
3466}
3467
3468/*****************************************************************************/
3469
3470#if CORO_CLONE
3471# include "clone.c"
3472#endif
3473
3474/*****************************************************************************/
3475
2112static SV * 3476static SV *
2113gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3477coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2114{ 3478{
2115 CV *cv = (CV *)NEWSV (0, 0); 3479 SV *coro_sv;
3480 struct coro *coro;
3481 MAGIC *mg;
3482 HV *hv;
3483 SV *cb;
3484 int i;
2116 3485
2117 sv_upgrade ((SV *)cv, SVt_PVCV); 3486 if (argc > 0)
3487 {
3488 cb = s_get_cv_croak (argv [0]);
2118 3489
2119 CvANON_on (cv); 3490 if (!is_coro)
2120 CvISXSUB_on (cv); 3491 {
2121 CvXSUB (cv) = xsub; 3492 if (CvISXSUB (cb))
2122 GENSUB_ARG = arg; 3493 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2123 3494
2124 return newRV_noinc ((SV *)cv); 3495 if (!CvROOT (cb))
2125} 3496 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3497 }
3498 }
2126 3499
2127/*****************************************************************************/ 3500 Newz (0, coro, 1, struct coro);
3501 coro->args = newAV ();
3502 coro->flags = CF_NEW;
3503
3504 if (coro_first) coro_first->prev = coro;
3505 coro->next = coro_first;
3506 coro_first = coro;
3507
3508 coro->hv = hv = newHV ();
3509 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3510 mg->mg_flags |= MGf_DUP;
3511 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3512
3513 if (argc > 0)
3514 {
3515 av_extend (coro->args, argc + is_coro - 1);
3516
3517 if (is_coro)
3518 {
3519 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3520 cb = (SV *)cv_coro_run;
3521 }
3522
3523 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3524
3525 for (i = 1; i < argc; i++)
3526 av_push (coro->args, newSVsv (argv [i]));
3527 }
3528
3529 return coro_sv;
3530}
3531
3532#ifndef __cplusplus
3533ecb_cold XS(boot_Coro__State);
3534#endif
3535
3536#if CORO_JIT
3537
3538static void ecb_noinline ecb_cold
3539pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3540{
3541 dSP;
3542 AV *av = newAV ();
3543
3544 av_store (av, 3, newSVuv (d));
3545 av_store (av, 2, newSVuv (c));
3546 av_store (av, 1, newSVuv (b));
3547 av_store (av, 0, newSVuv (a));
3548
3549 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3550
3551 PUTBACK;
3552}
3553
3554static void ecb_noinline ecb_cold
3555jit_init (pTHX)
3556{
3557 dSP;
3558 SV *load, *save;
3559 char *map_base;
3560 char *load_ptr, *save_ptr;
3561 STRLEN load_len, save_len, map_len;
3562 int count;
3563
3564 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3565
3566 PUSHMARK (SP);
3567 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3568 #include "state.h"
3569 count = call_pv ("Coro::State::_jit", G_ARRAY);
3570 SPAGAIN;
3571
3572 save = POPs; save_ptr = SvPVbyte (save, save_len);
3573 load = POPs; load_ptr = SvPVbyte (load, load_len);
3574
3575 map_len = load_len + save_len + 16;
3576
3577 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3578
3579 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3580
3581 load_perl_slots = (load_save_perl_slots_type)map_base;
3582 memcpy (map_base, load_ptr, load_len);
3583
3584 map_base += (load_len + 15) & ~15;
3585
3586 save_perl_slots = (load_save_perl_slots_type)map_base;
3587 memcpy (map_base, save_ptr, save_len);
3588
3589 /* we are good citizens and try to make the page read-only, so the evil evil */
3590 /* hackers might have it a bit more difficult */
3591 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3592
3593 PUTBACK;
3594 eval_pv ("undef &Coro::State::_jit", 1);
3595}
3596
3597#endif
2128 3598
2129MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3599MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2130 3600
2131PROTOTYPES: DISABLE 3601PROTOTYPES: DISABLE
2132 3602
2133BOOT: 3603BOOT:
2134{ 3604{
3605#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3606#include "state.h"
2135#ifdef USE_ITHREADS 3607#ifdef USE_ITHREADS
2136# if CORO_PTHREAD 3608# if CORO_PTHREAD
2137 coro_thx = PERL_GET_CONTEXT; 3609 coro_thx = PERL_GET_CONTEXT;
2138# endif 3610# endif
2139#endif 3611#endif
2140 BOOT_PAGESIZE; 3612 /* perl defines these to check for existance first, but why it doesn't */
3613 /* just create them one at init time is not clear to me, except for */
3614 /* programs trying to delete them, but... */
3615 /* anyway, we declare this as invalid and make sure they are initialised here */
3616 DEFSV;
3617 ERRSV;
3618
3619 cctx_current = cctx_new_empty ();
2141 3620
2142 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3621 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2143 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3622 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2144 3623
2145 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3624 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2146 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3625 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2147 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3626 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2148 3627
2149 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2150 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3628 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2151 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3629 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2152 3630
2153 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3631 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
2154 3632
… …
2165 3643
2166 { 3644 {
2167 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3645 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2168 3646
2169 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3647 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2170 hv_store_ent (PL_custom_op_names, slf, 3648 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2171 newSVpv ("coro_slf", 0), 0);
2172 3649
2173 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3650 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2174 hv_store_ent (PL_custom_op_descs, slf, 3651 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2175 newSVpv ("coro schedule like function", 0), 0);
2176 } 3652 }
2177 3653
2178 coroapi.ver = CORO_API_VERSION; 3654 coroapi.ver = CORO_API_VERSION;
2179 coroapi.rev = CORO_API_REVISION; 3655 coroapi.rev = CORO_API_REVISION;
2180 3656
… …
2185 coroapi.prepare_nop = prepare_nop; 3661 coroapi.prepare_nop = prepare_nop;
2186 coroapi.prepare_schedule = prepare_schedule; 3662 coroapi.prepare_schedule = prepare_schedule;
2187 coroapi.prepare_cede = prepare_cede; 3663 coroapi.prepare_cede = prepare_cede;
2188 coroapi.prepare_cede_notself = prepare_cede_notself; 3664 coroapi.prepare_cede_notself = prepare_cede_notself;
2189 3665
2190 { 3666 time_init (aTHX);
2191 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2192 3667
2193 if (!svp) croak ("Time::HiRes is required");
2194 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2195
2196 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2197 }
2198
2199 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3668 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3669#if CORO_JIT
3670 PUTBACK;
3671 jit_init (aTHX);
3672 SPAGAIN;
3673#endif
2200} 3674}
2201 3675
2202SV * 3676SV *
2203new (char *klass, ...) 3677new (SV *klass, ...)
3678 ALIAS:
3679 Coro::new = 1
2204 CODE: 3680 CODE:
2205{ 3681 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2206 struct coro *coro; 3682 OUTPUT:
2207 MAGIC *mg;
2208 HV *hv;
2209 int i;
2210
2211 Newz (0, coro, 1, struct coro);
2212 coro->args = newAV ();
2213 coro->flags = CF_NEW;
2214
2215 if (coro_first) coro_first->prev = coro;
2216 coro->next = coro_first;
2217 coro_first = coro;
2218
2219 coro->hv = hv = newHV ();
2220 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2221 mg->mg_flags |= MGf_DUP;
2222 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2223
2224 av_extend (coro->args, items - 1);
2225 for (i = 1; i < items; i++)
2226 av_push (coro->args, newSVsv (ST (i)));
2227}
2228 OUTPUT:
2229 RETVAL 3683 RETVAL
2230
2231void
2232_set_stacklevel (...)
2233 CODE:
2234 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2235 3684
2236void 3685void
2237transfer (...) 3686transfer (...)
2238 PROTOTYPE: $$ 3687 PROTOTYPE: $$
2239 CODE: 3688 CODE:
2240 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3689 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2241 3690
2242bool 3691SV *
2243_destroy (SV *coro_sv) 3692clone (Coro::State coro)
2244 CODE: 3693 CODE:
2245 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3694{
3695#if CORO_CLONE
3696 struct coro *ncoro = coro_clone (aTHX_ coro);
3697 MAGIC *mg;
3698 /* TODO: too much duplication */
3699 ncoro->hv = newHV ();
3700 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3701 mg->mg_flags |= MGf_DUP;
3702 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3703#else
3704 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3705#endif
3706}
2246 OUTPUT: 3707 OUTPUT:
2247 RETVAL 3708 RETVAL
2248
2249void
2250_exit (int code)
2251 PROTOTYPE: $
2252 CODE:
2253 _exit (code);
2254 3709
2255int 3710int
2256cctx_stacksize (int new_stacksize = 0) 3711cctx_stacksize (int new_stacksize = 0)
2257 PROTOTYPE: ;$ 3712 PROTOTYPE: ;$
2258 CODE: 3713 CODE:
… …
2294void 3749void
2295list () 3750list ()
2296 PROTOTYPE: 3751 PROTOTYPE:
2297 PPCODE: 3752 PPCODE:
2298{ 3753{
2299 struct coro *coro; 3754 struct coro *coro;
2300 for (coro = coro_first; coro; coro = coro->next) 3755 for (coro = coro_first; coro; coro = coro->next)
2301 if (coro->hv) 3756 if (coro->hv)
2302 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3757 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2303} 3758}
2304 3759
… …
2308 eval = 1 3763 eval = 1
2309 CODE: 3764 CODE:
2310{ 3765{
2311 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3766 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2312 { 3767 {
2313 struct coro temp; 3768 struct coro *current = SvSTATE_current;
3769 struct CoroSLF slf_save;
2314 3770
2315 if (!(coro->flags & CF_RUNNING)) 3771 if (current != coro)
2316 { 3772 {
2317 PUTBACK; 3773 PUTBACK;
2318 save_perl (aTHX_ &temp); 3774 save_perl (aTHX_ current);
2319 load_perl (aTHX_ coro); 3775 load_perl (aTHX_ coro);
3776 /* the coro is most likely in an active SLF call.
3777 * while not strictly required (the code we execute is
3778 * not allowed to call any SLF functions), it's cleaner
3779 * to reinitialise the slf_frame and restore it later.
3780 * This might one day allow us to actually do SLF calls
3781 * from code executed here.
3782 */
3783 slf_save = slf_frame;
3784 slf_frame.prepare = 0;
3785 SPAGAIN;
2320 } 3786 }
2321 3787
2322 {
2323 dSP;
2324 ENTER;
2325 SAVETMPS;
2326 PUTBACK;
2327 PUSHSTACK; 3788 PUSHSTACK;
3789
2328 PUSHMARK (SP); 3790 PUSHMARK (SP);
3791 PUTBACK;
2329 3792
2330 if (ix) 3793 if (ix)
2331 eval_sv (coderef, 0); 3794 eval_sv (coderef, 0);
2332 else 3795 else
2333 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3796 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2334 3797
2335 POPSTACK; 3798 POPSTACK;
2336 SPAGAIN; 3799 SPAGAIN;
2337 FREETMPS;
2338 LEAVE;
2339 PUTBACK;
2340 }
2341 3800
2342 if (!(coro->flags & CF_RUNNING)) 3801 if (current != coro)
2343 { 3802 {
3803 PUTBACK;
3804 slf_frame = slf_save;
2344 save_perl (aTHX_ coro); 3805 save_perl (aTHX_ coro);
2345 load_perl (aTHX_ &temp); 3806 load_perl (aTHX_ current);
2346 SPAGAIN; 3807 SPAGAIN;
2347 } 3808 }
2348 } 3809 }
2349} 3810}
2350 3811
… …
2353 PROTOTYPE: $ 3814 PROTOTYPE: $
2354 ALIAS: 3815 ALIAS:
2355 is_ready = CF_READY 3816 is_ready = CF_READY
2356 is_running = CF_RUNNING 3817 is_running = CF_RUNNING
2357 is_new = CF_NEW 3818 is_new = CF_NEW
2358 is_destroyed = CF_DESTROYED 3819 is_destroyed = CF_ZOMBIE
3820 is_zombie = CF_ZOMBIE
3821 is_suspended = CF_SUSPENDED
2359 CODE: 3822 CODE:
2360 RETVAL = boolSV (coro->flags & ix); 3823 RETVAL = boolSV (coro->flags & ix);
2361 OUTPUT: 3824 OUTPUT:
2362 RETVAL 3825 RETVAL
2363 3826
2364void 3827void
2365throw (Coro::State self, SV *throw = &PL_sv_undef) 3828throw (SV *self, SV *exception = &PL_sv_undef)
2366 PROTOTYPE: $;$ 3829 PROTOTYPE: $;$
2367 CODE: 3830 CODE:
2368{ 3831{
3832 struct coro *coro = SvSTATE (self);
2369 struct coro *current = SvSTATE_current; 3833 struct coro *current = SvSTATE_current;
2370 SV **throwp = self == current ? &coro_throw : &self->throw; 3834 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2371 SvREFCNT_dec (*throwp); 3835 SvREFCNT_dec (*exceptionp);
2372 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3836 SvGETMAGIC (exception);
3837 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3838
3839 api_ready (aTHX_ self);
2373} 3840}
2374 3841
2375void 3842void
2376api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3843api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2377 PROTOTYPE: $;$ 3844 PROTOTYPE: $;$
… …
2379 3846
2380SV * 3847SV *
2381has_cctx (Coro::State coro) 3848has_cctx (Coro::State coro)
2382 PROTOTYPE: $ 3849 PROTOTYPE: $
2383 CODE: 3850 CODE:
2384 RETVAL = boolSV (!!coro->cctx); 3851 /* maybe manage the running flag differently */
3852 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2385 OUTPUT: 3853 OUTPUT:
2386 RETVAL 3854 RETVAL
2387 3855
2388int 3856int
2389is_traced (Coro::State coro) 3857is_traced (Coro::State coro)
… …
2409 3877
2410void 3878void
2411force_cctx () 3879force_cctx ()
2412 PROTOTYPE: 3880 PROTOTYPE:
2413 CODE: 3881 CODE:
2414 SvSTATE_current->cctx->idle_sp = 0; 3882 cctx_current->idle_sp = 0;
2415 3883
2416void 3884void
2417swap_defsv (Coro::State self) 3885swap_defsv (Coro::State self)
2418 PROTOTYPE: $ 3886 PROTOTYPE: $
2419 ALIAS: 3887 ALIAS:
… …
2427 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3895 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2428 3896
2429 SV *tmp = *src; *src = *dst; *dst = tmp; 3897 SV *tmp = *src; *src = *dst; *dst = tmp;
2430 } 3898 }
2431 3899
3900void
3901cancel (Coro::State self)
3902 CODE:
3903 coro_state_destroy (aTHX_ self);
3904
3905SV *
3906enable_times (int enabled = enable_times)
3907 CODE:
3908{
3909 RETVAL = boolSV (enable_times);
3910
3911 if (enabled != enable_times)
3912 {
3913 enable_times = enabled;
3914
3915 coro_times_update ();
3916 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3917 }
3918}
3919 OUTPUT:
3920 RETVAL
3921
3922void
3923times (Coro::State self)
3924 PPCODE:
3925{
3926 struct coro *current = SvSTATE (coro_current);
3927
3928 if (ecb_expect_false (current == self))
3929 {
3930 coro_times_update ();
3931 coro_times_add (SvSTATE (coro_current));
3932 }
3933
3934 EXTEND (SP, 2);
3935 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3936 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3937
3938 if (ecb_expect_false (current == self))
3939 coro_times_sub (SvSTATE (coro_current));
3940}
3941
3942void
3943swap_sv (Coro::State coro, SV *sva, SV *svb)
3944 CODE:
3945{
3946 struct coro *current = SvSTATE_current;
3947 AV *swap_sv;
3948 int i;
3949
3950 sva = SvRV (sva);
3951 svb = SvRV (svb);
3952
3953 if (current == coro)
3954 SWAP_SVS_LEAVE (current);
3955
3956 if (!coro->swap_sv)
3957 coro->swap_sv = newAV ();
3958
3959 swap_sv = coro->swap_sv;
3960
3961 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
3962 {
3963 SV *a = AvARRAY (swap_sv)[i ];
3964 SV *b = AvARRAY (swap_sv)[i + 1];
3965
3966 if (a == sva && b == svb)
3967 {
3968 SvREFCNT_dec_NN (a);
3969 SvREFCNT_dec_NN (b);
3970
3971 for (; i <= AvFILLp (swap_sv) - 2; i++)
3972 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
3973
3974 AvFILLp (swap_sv) -= 2;
3975
3976 goto removed;
3977 }
3978 }
3979
3980 av_push (swap_sv, SvREFCNT_inc_NN (sva));
3981 av_push (swap_sv, SvREFCNT_inc_NN (svb));
3982
3983 removed:
3984
3985 if (current == coro)
3986 SWAP_SVS_ENTER (current);
3987}
3988
3989
2432MODULE = Coro::State PACKAGE = Coro 3990MODULE = Coro::State PACKAGE = Coro
2433 3991
2434BOOT: 3992BOOT:
2435{ 3993{
2436 int i; 3994 if (SVt_LAST > 32)
3995 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2437 3996
2438 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2439 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3997 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2440 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3998 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2441 3999 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2442 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 4000 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2443 SvREADONLY_on (coro_current); 4001 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
4002 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
4003 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
4004 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
4005
4006 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
4007 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
4008 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
4009 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2444 4010
2445 coro_stash = gv_stashpv ("Coro", TRUE); 4011 coro_stash = gv_stashpv ("Coro", TRUE);
2446 4012
2447 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4013 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2448 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4014 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2449 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4015 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2450 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4016 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2451 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4017 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2452 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4018 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2453
2454 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2455 coro_ready[i] = newAV ();
2456 4019
2457 { 4020 {
2458 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4021 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2459 4022
2460 coroapi.schedule = api_schedule; 4023 coroapi.schedule = api_schedule;
4024 coroapi.schedule_to = api_schedule_to;
2461 coroapi.cede = api_cede; 4025 coroapi.cede = api_cede;
2462 coroapi.cede_notself = api_cede_notself; 4026 coroapi.cede_notself = api_cede_notself;
2463 coroapi.ready = api_ready; 4027 coroapi.ready = api_ready;
2464 coroapi.is_ready = api_is_ready; 4028 coroapi.is_ready = api_is_ready;
2465 coroapi.nready = coro_nready; 4029 coroapi.nready = coro_nready;
2466 coroapi.current = coro_current; 4030 coroapi.current = coro_current;
2467 4031
4032 coroapi.enterleave_hook = api_enterleave_hook;
4033 coroapi.enterleave_unhook = api_enterleave_unhook;
4034 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4035
2468 GCoroAPI = &coroapi; 4036 /*GCoroAPI = &coroapi;*/
2469 sv_setiv (sv, (IV)&coroapi); 4037 sv_setiv (sv, (IV)&coroapi);
2470 SvREADONLY_on (sv); 4038 SvREADONLY_on (sv);
2471 } 4039 }
2472} 4040}
4041
4042SV *
4043async (...)
4044 PROTOTYPE: &@
4045 CODE:
4046 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4047 api_ready (aTHX_ RETVAL);
4048 OUTPUT:
4049 RETVAL
4050
4051void
4052_destroy (Coro::State coro)
4053 CODE:
4054 /* used by the manager thread */
4055 coro_state_destroy (aTHX_ coro);
4056
4057void
4058on_destroy (Coro::State coro, SV *cb)
4059 CODE:
4060 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4061
4062void
4063join (...)
4064 CODE:
4065 CORO_EXECUTE_SLF_XS (slf_init_join);
4066
4067void
4068terminate (...)
4069 CODE:
4070 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4071
4072void
4073cancel (...)
4074 CODE:
4075 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4076
4077int
4078safe_cancel (Coro::State self, ...)
4079 C_ARGS: aTHX_ self, &ST (1), items - 1
2473 4080
2474void 4081void
2475schedule (...) 4082schedule (...)
2476 CODE: 4083 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4084 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2478 4085
2479void 4086void
4087schedule_to (...)
4088 CODE:
4089 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4090
4091void
4092cede_to (...)
4093 CODE:
4094 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
4095
4096void
2480cede (...) 4097cede (...)
2481 CODE: 4098 CODE:
2482 CORO_EXECUTE_SLF_XS (slf_init_cede); 4099 CORO_EXECUTE_SLF_XS (slf_init_cede);
2483 4100
2484void 4101void
… …
2488 4105
2489void 4106void
2490_set_current (SV *current) 4107_set_current (SV *current)
2491 PROTOTYPE: $ 4108 PROTOTYPE: $
2492 CODE: 4109 CODE:
2493 SvREFCNT_dec (SvRV (coro_current)); 4110 SvREFCNT_dec_NN (SvRV (coro_current));
2494 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4111 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2495 4112
2496void 4113void
2497_set_readyhook (SV *hook) 4114_set_readyhook (SV *hook)
2498 PROTOTYPE: $ 4115 PROTOTYPE: $
2499 CODE: 4116 CODE:
2500 SvREFCNT_dec (coro_readyhook); 4117 SvREFCNT_dec (coro_readyhook);
4118 SvGETMAGIC (hook);
4119 if (SvOK (hook))
4120 {
2501 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4121 coro_readyhook = newSVsv (hook);
4122 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4123 }
4124 else
4125 {
4126 coro_readyhook = 0;
4127 CORO_READYHOOK = 0;
4128 }
2502 4129
2503int 4130int
2504prio (Coro::State coro, int newprio = 0) 4131prio (Coro::State coro, int newprio = 0)
2505 PROTOTYPE: $;$ 4132 PROTOTYPE: $;$
2506 ALIAS: 4133 ALIAS:
… …
2512 if (items > 1) 4139 if (items > 1)
2513 { 4140 {
2514 if (ix) 4141 if (ix)
2515 newprio = coro->prio - newprio; 4142 newprio = coro->prio - newprio;
2516 4143
2517 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4144 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2518 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4145 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2519 4146
2520 coro->prio = newprio; 4147 coro->prio = newprio;
2521 } 4148 }
2522} 4149}
2523 OUTPUT: 4150 OUTPUT:
… …
2537 CODE: 4164 CODE:
2538 RETVAL = coro_nready; 4165 RETVAL = coro_nready;
2539 OUTPUT: 4166 OUTPUT:
2540 RETVAL 4167 RETVAL
2541 4168
2542# for async_pool speedup
2543void 4169void
2544_pool_1 (SV *cb) 4170suspend (Coro::State self)
4171 PROTOTYPE: $
2545 CODE: 4172 CODE:
2546{ 4173 self->flags |= CF_SUSPENDED;
2547 HV *hv = (HV *)SvRV (coro_current);
2548 struct coro *coro = SvSTATE_hv ((SV *)hv);
2549 AV *defav = GvAV (PL_defgv);
2550 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2551 AV *invoke_av;
2552 int i, len;
2553 4174
2554 if (!invoke) 4175void
4176resume (Coro::State self)
4177 PROTOTYPE: $
4178 CODE:
4179 self->flags &= ~CF_SUSPENDED;
4180
4181void
4182_pool_handler (...)
4183 CODE:
4184 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4185
4186void
4187async_pool (SV *cv, ...)
4188 PROTOTYPE: &@
4189 PPCODE:
4190{
4191 HV *hv = (HV *)av_pop (av_async_pool);
4192 AV *av = newAV ();
4193 SV *cb = ST (0);
4194 int i;
4195
4196 av_extend (av, items - 2);
4197 for (i = 1; i < items; ++i)
4198 av_push (av, SvREFCNT_inc_NN (ST (i)));
4199
4200 if ((SV *)hv == &PL_sv_undef)
2555 { 4201 {
2556 SV *old = PL_diehook; 4202 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2557 PL_diehook = 0; 4203 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2558 SvREFCNT_dec (old); 4204 SvREFCNT_dec_NN (sv);
2559 croak ("\3async_pool terminate\2\n");
2560 } 4205 }
2561 4206
2562 SvREFCNT_dec (coro->saved_deffh);
2563 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2564
2565 hv_store (hv, "desc", sizeof ("desc") - 1,
2566 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2567
2568 invoke_av = (AV *)SvRV (invoke);
2569 len = av_len (invoke_av);
2570
2571 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2572
2573 if (len > 0)
2574 { 4207 {
2575 av_fill (defav, len - 1); 4208 struct coro *coro = SvSTATE_hv (hv);
2576 for (i = 0; i < len; ++i) 4209
2577 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4210 assert (!coro->invoke_cb);
4211 assert (!coro->invoke_av);
4212 coro->invoke_cb = SvREFCNT_inc (cb);
4213 coro->invoke_av = av;
2578 } 4214 }
4215
4216 api_ready (aTHX_ (SV *)hv);
4217
4218 if (GIMME_V != G_VOID)
4219 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4220 else
4221 SvREFCNT_dec_NN (hv);
2579} 4222}
4223
4224SV *
4225rouse_cb ()
4226 PROTOTYPE:
4227 CODE:
4228 RETVAL = coro_new_rouse_cb (aTHX);
4229 OUTPUT:
4230 RETVAL
2580 4231
2581void 4232void
2582_pool_2 (SV *cb) 4233rouse_wait (...)
4234 PROTOTYPE: ;$
4235 PPCODE:
4236 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4237
4238void
4239on_enter (SV *block)
4240 ALIAS:
4241 on_leave = 1
4242 PROTOTYPE: &
2583 CODE: 4243 CODE:
2584{ 4244{
2585 HV *hv = (HV *)SvRV (coro_current);
2586 struct coro *coro = SvSTATE_hv ((SV *)hv); 4245 struct coro *coro = SvSTATE_current;
4246 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2587 4247
2588 sv_setsv (cb, &PL_sv_undef); 4248 block = s_get_cv_croak (block);
2589 4249
2590 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4250 if (!*avp)
2591 coro->saved_deffh = 0;
2592
2593 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2594 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2595 {
2596 SV *old = PL_diehook;
2597 PL_diehook = 0;
2598 SvREFCNT_dec (old);
2599 croak ("\3async_pool terminate\2\n");
2600 }
2601
2602 av_clear (GvAV (PL_defgv));
2603 hv_store (hv, "desc", sizeof ("desc") - 1,
2604 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2605
2606 coro->prio = 0;
2607
2608 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2609 api_trace (aTHX_ coro_current, 0);
2610
2611 av_push (av_async_pool, newSVsv (coro_current));
2612}
2613
2614
2615MODULE = Coro::State PACKAGE = Coro::AIO
2616
2617void
2618_get_state (SV *self)
2619 PROTOTYPE: $
2620 PPCODE:
2621{
2622 AV *defav = GvAV (PL_defgv);
2623 AV *av = newAV (); 4251 *avp = newAV ();
2624 int i;
2625 SV *data_sv = newSV (sizeof (struct io_state));
2626 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2627 SvCUR_set (data_sv, sizeof (struct io_state));
2628 SvPOK_only (data_sv);
2629 4252
2630 data->errorno = errno; 4253 av_push (*avp, SvREFCNT_inc (block));
2631 data->laststype = PL_laststype;
2632 data->laststatval = PL_laststatval;
2633 data->statcache = PL_statcache;
2634 4254
2635 av_extend (av, AvFILLp (defav) + 1 + 1); 4255 if (!ix)
4256 on_enterleave_call (aTHX_ block);
2636 4257
2637 for (i = 0; i <= AvFILLp (defav); ++i) 4258 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2638 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4259 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2639 4260 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2640 av_push (av, data_sv);
2641
2642 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2643
2644 api_ready (aTHX_ self);
2645}
2646
2647void
2648_set_state (SV *state)
2649 PROTOTYPE: $
2650 PPCODE:
2651{
2652 AV *av = (AV *)SvRV (state);
2653 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2654 int i;
2655
2656 errno = data->errorno;
2657 PL_laststype = data->laststype;
2658 PL_laststatval = data->laststatval;
2659 PL_statcache = data->statcache;
2660
2661 EXTEND (SP, AvFILLp (av));
2662 for (i = 0; i < AvFILLp (av); ++i)
2663 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2664}
2665
2666
2667MODULE = Coro::State PACKAGE = Coro::AnyEvent
2668
2669BOOT:
2670 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2671
2672void
2673_schedule (...)
2674 CODE:
2675{
2676 static int incede;
2677
2678 api_cede_notself (aTHX);
2679
2680 ++incede;
2681 while (coro_nready >= incede && api_cede (aTHX))
2682 ;
2683
2684 sv_setsv (sv_activity, &PL_sv_undef);
2685 if (coro_nready >= incede)
2686 {
2687 PUSHMARK (SP);
2688 PUTBACK;
2689 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2690 SPAGAIN;
2691 }
2692
2693 --incede;
2694} 4261}
2695 4262
2696 4263
2697MODULE = Coro::State PACKAGE = PerlIO::cede 4264MODULE = Coro::State PACKAGE = PerlIO::cede
2698 4265
2699BOOT: 4266BOOT:
2700 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4267 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2701 4268
4269
2702MODULE = Coro::State PACKAGE = Coro::Semaphore 4270MODULE = Coro::State PACKAGE = Coro::Semaphore
2703 4271
2704SV * 4272SV *
2705new (SV *klass, SV *count_ = 0) 4273new (SV *klass, SV *count = 0)
2706 CODE: 4274 CODE:
2707{ 4275{
2708 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4276 int semcnt = 1;
2709 AV *av = newAV (); 4277
2710 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4278 if (count)
2711 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4279 {
4280 SvGETMAGIC (count);
4281
4282 if (SvOK (count))
4283 semcnt = SvIV (count);
4284 }
4285
4286 RETVAL = sv_bless (
4287 coro_waitarray_new (aTHX_ semcnt),
4288 GvSTASH (CvGV (cv))
4289 );
2712} 4290}
4291 OUTPUT:
4292 RETVAL
4293
4294# helper for Coro::Channel and others
4295SV *
4296_alloc (int count)
4297 CODE:
4298 RETVAL = coro_waitarray_new (aTHX_ count);
2713 OUTPUT: 4299 OUTPUT:
2714 RETVAL 4300 RETVAL
2715 4301
2716SV * 4302SV *
2717count (SV *self) 4303count (SV *self)
… …
2719 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4305 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2720 OUTPUT: 4306 OUTPUT:
2721 RETVAL 4307 RETVAL
2722 4308
2723void 4309void
2724up (SV *self, int adjust = 1) 4310up (SV *self)
2725 ALIAS:
2726 adjust = 1
2727 CODE: 4311 CODE:
2728 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4312 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
2729 4313
2730void 4314void
2731down (SV *self) 4315adjust (SV *self, int adjust)
4316 CODE:
4317 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4318
4319void
4320down (...)
2732 CODE: 4321 CODE:
2733 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4322 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4323
4324void
4325wait (...)
4326 CODE:
4327 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2734 4328
2735void 4329void
2736try (SV *self) 4330try (SV *self)
2737 PPCODE: 4331 PPCODE:
2738{ 4332{
… …
2750 XSRETURN_NO; 4344 XSRETURN_NO;
2751} 4345}
2752 4346
2753void 4347void
2754waiters (SV *self) 4348waiters (SV *self)
2755 CODE: 4349 PPCODE:
2756{ 4350{
2757 AV *av = (AV *)SvRV (self); 4351 AV *av = (AV *)SvRV (self);
4352 int wcount = AvFILLp (av) + 1 - 1;
2758 4353
2759 if (GIMME_V == G_SCALAR) 4354 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4355 XPUSHs (sv_2mortal (newSViv (wcount)));
2761 else 4356 else
2762 { 4357 {
2763 int i; 4358 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1); 4359 EXTEND (SP, wcount);
2765 for (i = 1; i <= AvFILLp (av); ++i) 4360 for (i = 1; i <= wcount; ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i])); 4361 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2767 } 4362 }
2768} 4363}
2769 4364
4365MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4366
4367void
4368_may_delete (SV *sem, int count, unsigned int extra_refs)
4369 PPCODE:
4370{
4371 AV *av = (AV *)SvRV (sem);
4372
4373 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4374 && AvFILLp (av) == 0 /* no waiters, just count */
4375 && SvIV (AvARRAY (av)[0]) == count)
4376 XSRETURN_YES;
4377
4378 XSRETURN_NO;
4379}
4380
4381MODULE = Coro::State PACKAGE = Coro::Signal
4382
4383SV *
4384new (SV *klass)
4385 CODE:
4386 RETVAL = sv_bless (
4387 coro_waitarray_new (aTHX_ 0),
4388 GvSTASH (CvGV (cv))
4389 );
4390 OUTPUT:
4391 RETVAL
4392
4393void
4394wait (...)
4395 CODE:
4396 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4397
4398void
4399broadcast (SV *self)
4400 CODE:
4401{
4402 AV *av = (AV *)SvRV (self);
4403 coro_signal_wake (aTHX_ av, AvFILLp (av));
4404}
4405
4406void
4407send (SV *self)
4408 CODE:
4409{
4410 AV *av = (AV *)SvRV (self);
4411
4412 if (AvFILLp (av))
4413 coro_signal_wake (aTHX_ av, 1);
4414 else
4415 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4416}
4417
4418IV
4419awaited (SV *self)
4420 CODE:
4421 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4422 OUTPUT:
4423 RETVAL
4424
4425
4426MODULE = Coro::State PACKAGE = Coro::AnyEvent
4427
4428BOOT:
4429 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4430
4431void
4432_schedule (...)
4433 CODE:
4434{
4435 static int incede;
4436
4437 api_cede_notself (aTHX);
4438
4439 ++incede;
4440 while (coro_nready >= incede && api_cede (aTHX))
4441 ;
4442
4443 sv_setsv (sv_activity, &PL_sv_undef);
4444 if (coro_nready >= incede)
4445 {
4446 PUSHMARK (SP);
4447 PUTBACK;
4448 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4449 }
4450
4451 --incede;
4452}
4453
4454
4455MODULE = Coro::State PACKAGE = Coro::AIO
4456
4457void
4458_register (char *target, char *proto, SV *req)
4459 CODE:
4460{
4461 SV *req_cv = s_get_cv_croak (req);
4462 /* newXSproto doesn't return the CV on 5.8 */
4463 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4464 sv_setpv ((SV *)slf_cv, proto);
4465 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4466}
4467
4468MODULE = Coro::State PACKAGE = Coro::Select
4469
4470void
4471patch_pp_sselect ()
4472 CODE:
4473 if (!coro_old_pp_sselect)
4474 {
4475 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4476 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4477 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4478 }
4479
4480void
4481unpatch_pp_sselect ()
4482 CODE:
4483 if (coro_old_pp_sselect)
4484 {
4485 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4486 coro_old_pp_sselect = 0;
4487 }
4488
4489MODULE = Coro::State PACKAGE = Coro::Util
4490
4491void
4492_exit (int code)
4493 CODE:
4494 _exit (code);
4495
4496NV
4497time ()
4498 CODE:
4499 RETVAL = nvtime (aTHX);
4500 OUTPUT:
4501 RETVAL
4502
4503NV
4504gettimeofday ()
4505 PPCODE:
4506{
4507 UV tv [2];
4508 u2time (aTHX_ tv);
4509 EXTEND (SP, 2);
4510 PUSHs (sv_2mortal (newSVuv (tv [0])));
4511 PUSHs (sv_2mortal (newSVuv (tv [1])));
4512}
4513

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