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Comparing Coro/Coro/State.xs (file contents):
Revision 1.289 by root, Mon Nov 17 08:25:06 2008 UTC vs.
Revision 1.463 by root, Wed Jun 22 20:37:27 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#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD
111#endif
112
113#ifndef CORO_STACKGUARD
114# define CORO_STACKGUARD 0
115#endif 83#endif
116 84
117/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 88#endif
121 89
122/* 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
123 * portable way as possible. */ 91 * portable way as possible. */
124#if __GNUC__ >= 4 92#if __GNUC__ >= 4
93# define dSTACKLEVEL int stacklevel_dummy
125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 94# define STACKLEVEL __builtin_frame_address (0)
126#else 95#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 96# define dSTACKLEVEL volatile void *stacklevel
97# define STACKLEVEL ((void *)&stacklevel)
128#endif 98#endif
129 99
130#define IN_DESTRUCT (PL_main_cv == Nullcv) 100#define IN_DESTRUCT PL_dirty
131
132#if __GNUC__ >= 3
133# define attribute(x) __attribute__(x)
134# define expect(expr,value) __builtin_expect ((expr),(value))
135# define INLINE static inline
136#else
137# define attribute(x)
138# define expect(expr,value) (expr)
139# define INLINE static
140#endif
141
142#define expect_false(expr) expect ((expr) != 0, 0)
143#define expect_true(expr) expect ((expr) != 0, 1)
144
145#define NOINLINE attribute ((noinline))
146 101
147#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
148 104
149#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
150# if CORO_PTHREAD 106# if CORO_PTHREAD
151static void *coro_thx; 107static void *coro_thx;
152# endif 108# endif
153#endif 109#endif
154 110
111#ifdef __linux
112# include <time.h> /* for timespec */
113# include <syscall.h> /* for SYS_* */
114# ifdef SYS_clock_gettime
115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
116# define CORO_CLOCK_MONOTONIC 1
117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
118# endif
119#endif
120
155static 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);
156 128
157static U32 cctx_gen; 129static U32 cctx_gen;
158static size_t cctx_stacksize = CORO_STACKSIZE; 130static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 131static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 132static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 133static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 134static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 135static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
164 136
137static AV *av_destroy; /* destruction queue */
138static SV *sv_manager; /* the manager coro */
139static SV *sv_idle; /* $Coro::idle */
140
165static GV *irsgv; /* $/ */ 141static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 142static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 143static SV *rv_diehook;
168static SV *rv_warnhook; 144static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */
170 145
171/* async_pool helper stuff */ 146/* async_pool helper stuff */
172static SV *sv_pool_rss; 147static SV *sv_pool_rss;
173static SV *sv_pool_size; 148static SV *sv_pool_size;
149static SV *sv_async_pool_idle; /* description string */
174static AV *av_async_pool; 150static AV *av_async_pool; /* idle pool */
151static SV *sv_Coro; /* class string */
152static CV *cv_pool_handler;
175 153
176/* Coro::AnyEvent */ 154/* Coro::AnyEvent */
177static SV *sv_activity; 155static SV *sv_activity;
178 156
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
179static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
180static int cctx_count, cctx_idle; 164static int cctx_count, cctx_idle;
181 165
182enum { 166enum
167{
183 CC_MAPPED = 0x01, 168 CC_MAPPED = 0x01,
184 CC_NOREUSE = 0x02, /* throw this away after tracing */ 169 CC_NOREUSE = 0x02, /* throw this away after tracing */
185 CC_TRACE = 0x04, 170 CC_TRACE = 0x04,
186 CC_TRACE_SUB = 0x08, /* trace sub calls */ 171 CC_TRACE_SUB = 0x08, /* trace sub calls */
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 172 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
192typedef struct coro_cctx 177typedef struct coro_cctx
193{ 178{
194 struct coro_cctx *next; 179 struct coro_cctx *next;
195 180
196 /* the stack */ 181 /* the stack */
197 void *sptr; 182 struct coro_stack stack;
198 size_t ssize;
199 183
200 /* cpu state */ 184 /* cpu state */
201 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
202 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
203 JMPENV *top_env; 189 JMPENV *top_env;
204 coro_context cctx; 190 coro_context cctx;
205 191
206 U32 gen; 192 U32 gen;
207#if CORO_USE_VALGRIND 193#if CORO_USE_VALGRIND
208 int valgrind_id; 194 int valgrind_id;
209#endif 195#endif
210 unsigned char flags; 196 unsigned char flags;
211} coro_cctx; 197} coro_cctx;
212 198
199static coro_cctx *cctx_current; /* the currently running cctx */
200
201/*****************************************************************************/
202
203static MGVTBL coro_state_vtbl;
204
213enum { 205enum
206{
214 CF_RUNNING = 0x0001, /* coroutine is running */ 207 CF_RUNNING = 0x0001, /* coroutine is running */
215 CF_READY = 0x0002, /* coroutine is ready */ 208 CF_READY = 0x0002, /* coroutine is ready */
216 CF_NEW = 0x0004, /* has never been switched to */ 209 CF_NEW = 0x0004, /* has never been switched to */
217 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) */
218}; 213};
219 214
220/* 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 */
221typedef struct 216typedef struct
222{ 217{
223 SV *defsv;
224 AV *defav;
225 SV *errsv;
226 SV *irsgv;
227#define VAR(name,type) type name; 218 #define VARx(name,expr,type) type name;
228# include "state.h" 219 #include "state.h"
229#undef VAR
230} perl_slots; 220} perl_slots;
231 221
222/* how many context stack entries do we need for perl_slots */
232#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))
233 224
234/* this is a structure representing a perl-level coroutine */ 225/* this is a structure representing a perl-level coroutine */
235struct coro { 226struct coro
227{
236 /* the C coroutine allocated to this perl coroutine, if any */ 228 /* the C coroutine allocated to this perl coroutine, if any */
237 coro_cctx *cctx; 229 coro_cctx *cctx;
230
231 /* ready queue */
232 struct coro *next_ready;
238 233
239 /* state data */ 234 /* state data */
240 struct CoroSLF slf_frame; /* saved slf frame */ 235 struct CoroSLF slf_frame; /* saved slf frame */
241 AV *mainstack; 236 AV *mainstack;
242 perl_slots *slot; /* basically the saved sp */ 237 perl_slots *slot; /* basically the saved sp */
243 238
239 CV *startcv; /* the CV to execute */
244 AV *args; /* data associated with this coroutine (initial args) */ 240 AV *args; /* data associated with this coroutine (initial args) */
245 int refcnt; /* coroutines are refcounted, yes */
246 int flags; /* CF_ flags */ 241 int flags; /* CF_ flags */
247 HV *hv; /* the perl hash associated with this coro, if any */ 242 HV *hv; /* the perl hash associated with this coro, if any */
248 void (*on_destroy)(pTHX_ struct coro *coro);
249 243
250 /* statistics */ 244 /* statistics */
251 int usecount; /* number of transfers to this coro */ 245 int usecount; /* number of transfers to this coro */
252 246
253 /* coro process data */ 247 /* coro process data */
254 int prio; 248 int prio;
255 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 */
256 253
257 /* async_pool */ 254 /* async_pool */
258 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;
259 268
260 /* linked list */ 269 /* linked list */
261 struct coro *next, *prev; 270 struct coro *next, *prev;
262}; 271};
263 272
264typedef struct coro *Coro__State; 273typedef struct coro *Coro__State;
265typedef struct coro *Coro__State_or_hashref; 274typedef struct coro *Coro__State_or_hashref;
266 275
267/* the following variables are effectively part of the perl context */ 276/* the following variables are effectively part of the perl context */
268/* and get copied between struct coro and these variables */ 277/* and get copied between struct coro and these variables */
269/* the mainr easonw e don't support windows process emulation */ 278/* the main reason we don't support windows process emulation */
270static struct CoroSLF slf_frame; /* the current slf frame */ 279static struct CoroSLF slf_frame; /* the current slf frame */
271static SV *coro_throw;
272 280
273/** Coro ********************************************************************/ 281/** Coro ********************************************************************/
274 282
275#define PRIO_MAX 3 283#define CORO_PRIO_MAX 3
276#define PRIO_HIGH 1 284#define CORO_PRIO_HIGH 1
277#define PRIO_NORMAL 0 285#define CORO_PRIO_NORMAL 0
278#define PRIO_LOW -1 286#define CORO_PRIO_LOW -1
279#define PRIO_IDLE -3 287#define CORO_PRIO_IDLE -3
280#define PRIO_MIN -4 288#define CORO_PRIO_MIN -4
281 289
282/* for Coro.pm */ 290/* for Coro.pm */
283static SV *coro_current; 291static SV *coro_current;
284static SV *coro_readyhook; 292static SV *coro_readyhook;
285static 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;
286static struct coro *coro_first; 295static struct coro *coro_first;
287#define coro_nready coroapi.nready 296#define coro_nready coroapi.nready
288 297
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
289/** lowlevel stuff **********************************************************/ 393/** lowlevel stuff **********************************************************/
290 394
291static SV * 395static SV * ecb_noinline
292coro_get_sv (pTHX_ const char *name, int create) 396coro_get_sv (pTHX_ const char *name, int create)
293{ 397{
294#if PERL_VERSION_ATLEAST (5,10,0) 398#if PERL_VERSION_ATLEAST (5,10,0)
295 /* 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 */
296 get_sv (name, create); 400 get_sv (name, create);
297#endif 401#endif
298 return get_sv (name, create); 402 return get_sv (name, create);
299} 403}
300 404
301static AV * 405static AV * ecb_noinline
302coro_get_av (pTHX_ const char *name, int create) 406coro_get_av (pTHX_ const char *name, int create)
303{ 407{
304#if PERL_VERSION_ATLEAST (5,10,0) 408#if PERL_VERSION_ATLEAST (5,10,0)
305 /* 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 */
306 get_av (name, create); 410 get_av (name, create);
307#endif 411#endif
308 return get_av (name, create); 412 return get_av (name, create);
309} 413}
310 414
311static HV * 415static HV * ecb_noinline
312coro_get_hv (pTHX_ const char *name, int create) 416coro_get_hv (pTHX_ const char *name, int create)
313{ 417{
314#if PERL_VERSION_ATLEAST (5,10,0) 418#if PERL_VERSION_ATLEAST (5,10,0)
315 /* 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 */
316 get_hv (name, create); 420 get_hv (name, create);
317#endif 421#endif
318 return get_hv (name, create); 422 return get_hv (name, create);
319} 423}
320 424
321static 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 *
322coro_clone_padlist (pTHX_ CV *cv) 531coro_derive_padlist (pTHX_ CV *cv)
323{ 532{
324 AV *padlist = CvPADLIST (cv); 533 PADLIST *padlist = CvPADLIST (cv);
325 AV *newpadlist, *newpad; 534 PADLIST *newpadlist;
535 PADNAMELIST *padnames;
536 PAD *newpad;
537 PADOFFSET off = PadlistMAX (padlist) + 1;
326 538
327 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. */
328 AvREAL_off (newpadlist); 567 AvREAL_off (newpadlist);
329#if PERL_VERSION_ATLEAST (5,10,0)
330 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
331#else
332 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
333#endif 568#endif
334 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
335 --AvFILLp (padlist);
336 569
337 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 570 /* Already extended to 2 elements by newPADLIST. */
338 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;
339 578
340 return newpadlist; 579 return newpadlist;
341} 580}
342 581
343static void 582ecb_inline void
344free_padlist (pTHX_ AV *padlist) 583free_padlist (pTHX_ PADLIST *padlist)
345{ 584{
346 /* may be during global destruction */ 585 /* may be during global destruction */
347 if (SvREFCNT (padlist)) 586 if (!IN_DESTRUCT)
348 { 587 {
349 I32 i = AvFILLp (padlist); 588 I32 i = PadlistMAX (padlist);
350 while (i >= 0) 589
590 while (i > 0) /* special-case index 0 */
351 { 591 {
352 SV **svp = av_fetch (padlist, i--, FALSE); 592 /* we try to be extra-careful here */
593 PAD *pad = PadlistARRAY (padlist)[i--];
594
353 if (svp) 595 if (pad)
354 { 596 {
355 SV *sv; 597 I32 j = PadMAX (pad);
356 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 598
599 while (j >= 0)
357 SvREFCNT_dec (sv); 600 SvREFCNT_dec (PadARRAY (pad)[j--]);
358 601
602 PadMAX (pad) = -1;
359 SvREFCNT_dec (*svp); 603 SvREFCNT_dec (pad);
360 } 604 }
361 } 605 }
362 606
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);
363 SvREFCNT_dec ((SV*)padlist); 615 SvREFCNT_dec ((SV*)padlist);
616#endif
364 } 617 }
365} 618}
366 619
367static int 620static int
368coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 621coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
369{ 622{
370 AV *padlist; 623 PADLIST *padlist;
371 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;
372 626
373 /* casting is fun. */ 627 /* perl manages to free our internal AV and _then_ call us */
374 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 628 if (IN_DESTRUCT)
629 return 0;
630
631 while (len--)
375 free_padlist (aTHX_ padlist); 632 free_padlist (aTHX_ padlists[len]);
376
377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
378 633
379 return 0; 634 return 0;
380} 635}
381
382#define CORO_MAGIC_type_cv 26
383#define CORO_MAGIC_type_state PERL_MAGIC_ext
384 636
385static MGVTBL coro_cv_vtbl = { 637static MGVTBL coro_cv_vtbl = {
386 0, 0, 0, 0, 638 0, 0, 0, 0,
387 coro_cv_free 639 coro_cv_free
388}; 640};
389 641
390#define CORO_MAGIC_NN(sv, type) \
391 (expect_true (SvMAGIC (sv)->mg_type == type) \
392 ? SvMAGIC (sv) \
393 : mg_find (sv, type))
394
395#define CORO_MAGIC(sv, type) \
396 (expect_true (SvMAGIC (sv)) \
397 ? CORO_MAGIC_NN (sv, type) \
398 : 0)
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* faster than SvSTATE, but expects a coroutine hv */
430#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
432
433/* the next two functions merely cache the padlists */ 642/* the next two functions merely cache the padlists */
434static void 643ecb_inline void
435get_padlist (pTHX_ CV *cv) 644get_padlist (pTHX_ CV *cv)
436{ 645{
437 MAGIC *mg = CORO_MAGIC_cv (cv); 646 MAGIC *mg = CORO_MAGIC_cv (cv);
438 AV *av; 647 size_t *lenp;
439 648
440 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 649 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
441 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 650 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
442 else 651 else
443 { 652 {
444#if CORO_PREFER_PERL_FUNCTIONS 653#if CORO_PREFER_PERL_FUNCTIONS
445 /* this is probably cleaner? but also slower! */ 654 /* this is probably cleaner? but also slower! */
446 /* in practise, it seems to be less stable */ 655 /* in practise, it seems to be less stable */
447 CV *cp = Perl_cv_clone (cv); 656 CV *cp = Perl_cv_clone (aTHX_ cv);
448 CvPADLIST (cv) = CvPADLIST (cp); 657 CvPADLIST (cv) = CvPADLIST (cp);
449 CvPADLIST (cp) = 0; 658 CvPADLIST (cp) = 0;
450 SvREFCNT_dec (cp); 659 SvREFCNT_dec (cp);
451#else 660#else
452 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 661 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
453#endif 662#endif
454 } 663 }
455} 664}
456 665
457static void 666ecb_inline void
458put_padlist (pTHX_ CV *cv) 667put_padlist (pTHX_ CV *cv)
459{ 668{
460 MAGIC *mg = CORO_MAGIC_cv (cv); 669 MAGIC *mg = CORO_MAGIC_cv (cv);
461 AV *av;
462 670
463 if (expect_false (!mg)) 671 if (ecb_expect_false (!mg))
672 {
464 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);
465 681
466 av = (AV *)mg->mg_obj; 682 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
467
468 if (expect_false (AvFILLp (av) >= AvMAX (av)))
469 av_extend (av, AvMAX (av) + 1);
470
471 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
472} 683}
473 684
474/** 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);
475 758
476static void 759static void
477load_perl (pTHX_ Coro__State c) 760load_perl (pTHX_ Coro__State c)
478{ 761{
479 perl_slots *slot = c->slot; 762 perl_slots *slot = c->slot;
480 c->slot = 0; 763 c->slot = 0;
481 764
482 PL_mainstack = c->mainstack; 765 PL_mainstack = c->mainstack;
483 766
484 GvSV (PL_defgv) = slot->defsv; 767#if CORO_JIT
485 GvAV (PL_defgv) = slot->defav; 768 load_perl_slots (slot);
486 GvSV (PL_errgv) = slot->errsv; 769#else
487 GvSV (irsgv) = slot->irsgv;
488
489 #define VAR(name,type) PL_ ## name = slot->name; 770 #define VARx(name,expr,type) expr = slot->name;
490 # include "state.h" 771 #include "state.h"
491 #undef VAR 772#endif
492 773
493 { 774 {
494 dSP; 775 dSP;
495 776
496 CV *cv; 777 CV *cv;
497 778
498 /* now do the ugly restore mess */ 779 /* now do the ugly restore mess */
499 while (expect_true (cv = (CV *)POPs)) 780 while (ecb_expect_true (cv = (CV *)POPs))
500 { 781 {
501 put_padlist (aTHX_ cv); /* mark this padlist as available */ 782 put_padlist (aTHX_ cv); /* mark this padlist as available */
502 CvDEPTH (cv) = PTR2IV (POPs); 783 CvDEPTH (cv) = PTR2IV (POPs);
503 CvPADLIST (cv) = (AV *)POPs; 784 CvPADLIST (cv) = (PADLIST *)POPs;
504 } 785 }
505 786
506 PUTBACK; 787 PUTBACK;
507 } 788 }
508 789
509 slf_frame = c->slf_frame; 790 slf_frame = c->slf_frame;
510 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);
511} 818}
512 819
513static void 820static void
514save_perl (pTHX_ Coro__State c) 821save_perl (pTHX_ Coro__State c)
515{ 822{
516 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;
517 c->slf_frame = slf_frame; 850 c->slf_frame = slf_frame;
518 851
519 { 852 {
520 dSP; 853 dSP;
521 I32 cxix = cxstack_ix; 854 I32 cxix = cxstack_ix;
… …
529 862
530 XPUSHs (Nullsv); 863 XPUSHs (Nullsv);
531 /* this loop was inspired by pp_caller */ 864 /* this loop was inspired by pp_caller */
532 for (;;) 865 for (;;)
533 { 866 {
534 while (expect_true (cxix >= 0)) 867 while (ecb_expect_true (cxix >= 0))
535 { 868 {
536 PERL_CONTEXT *cx = &ccstk[cxix--]; 869 PERL_CONTEXT *cx = &ccstk[cxix--];
537 870
538 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))
539 { 872 {
540 CV *cv = cx->blk_sub.cv; 873 CV *cv = cx->blk_sub.cv;
541 874
542 if (expect_true (CvDEPTH (cv))) 875 if (ecb_expect_true (CvDEPTH (cv)))
543 { 876 {
544 EXTEND (SP, 3); 877 EXTEND (SP, 3);
545 PUSHs ((SV *)CvPADLIST (cv)); 878 PUSHs ((SV *)CvPADLIST (cv));
546 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 879 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
547 PUSHs ((SV *)cv); 880 PUSHs ((SV *)cv);
… …
550 get_padlist (aTHX_ cv); 883 get_padlist (aTHX_ cv);
551 } 884 }
552 } 885 }
553 } 886 }
554 887
555 if (expect_true (top_si->si_type == PERLSI_MAIN)) 888 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
556 break; 889 break;
557 890
558 top_si = top_si->si_prev; 891 top_si = top_si->si_prev;
559 ccstk = top_si->si_cxstack; 892 ccstk = top_si->si_cxstack;
560 cxix = top_si->si_cxix; 893 cxix = top_si->si_cxix;
… …
562 895
563 PUTBACK; 896 PUTBACK;
564 } 897 }
565 898
566 /* allocate some space on the context stack for our purposes */ 899 /* allocate some space on the context stack for our purposes */
567 /* we manually unroll here, as usually 2 slots is enough */ 900 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
568 if (SLOT_COUNT >= 1) CXINC;
569 if (SLOT_COUNT >= 2) CXINC;
570 if (SLOT_COUNT >= 3) CXINC;
571 { 901 {
572 int i; 902 unsigned int i;
903
573 for (i = 3; i < SLOT_COUNT; ++i) 904 for (i = 0; i < SLOT_COUNT; ++i)
574 CXINC; 905 CXINC;
575 } 906
576 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 907 cxstack_ix -= SLOT_COUNT; /* undo allocation */
908 }
577 909
578 c->mainstack = PL_mainstack; 910 c->mainstack = PL_mainstack;
579 911
580 { 912 {
581 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 913 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
582 914
583 slot->defav = GvAV (PL_defgv); 915#if CORO_JIT
584 slot->defsv = DEFSV; 916 save_perl_slots (slot);
585 slot->errsv = ERRSV; 917#else
586 slot->irsgv = GvSV (irsgv);
587
588 #define VAR(name,type) slot->name = PL_ ## name; 918 #define VARx(name,expr,type) slot->name = expr;
589 # include "state.h" 919 #include "state.h"
590 #undef VAR 920#endif
591 } 921 }
592} 922}
593 923
594/* 924/*
595 * allocate various perl stacks. This is almost an exact copy 925 * allocate various perl stacks. This is almost an exact copy
596 * of perl.c:init_stacks, except that it uses less memory 926 * of perl.c:init_stacks, except that it uses less memory
597 * on the (sometimes correct) assumption that coroutines do 927 * on the (sometimes correct) assumption that coroutines do
598 * not usually need a lot of stackspace. 928 * not usually need a lot of stackspace.
599 */ 929 */
600#if CORO_PREFER_PERL_FUNCTIONS 930#if CORO_PREFER_PERL_FUNCTIONS
601# define coro_init_stacks init_stacks 931# define coro_init_stacks(thx) init_stacks ()
602#else 932#else
603static void 933static void
604coro_init_stacks (pTHX) 934coro_init_stacks (pTHX)
605{ 935{
606 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() */
607 PL_curstackinfo->si_type = PERLSI_MAIN; 937 PL_curstackinfo->si_type = PERLSI_MAIN;
608 PL_curstack = PL_curstackinfo->si_stack; 938 PL_curstack = PL_curstackinfo->si_stack;
609 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 939 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
610 940
611 PL_stack_base = AvARRAY(PL_curstack); 941 PL_stack_base = AvARRAY(PL_curstack);
… …
626#endif 956#endif
627 957
628 New(54,PL_scopestack,8,I32); 958 New(54,PL_scopestack,8,I32);
629 PL_scopestack_ix = 0; 959 PL_scopestack_ix = 0;
630 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
631 964
632 New(54,PL_savestack,24,ANY); 965 New(54,PL_savestack,24,ANY);
633 PL_savestack_ix = 0; 966 PL_savestack_ix = 0;
634 PL_savestack_max = 24; 967 PL_savestack_max = 24;
968#if !PERL_VERSION_ATLEAST (5,24,0)
969 /* perl 5.24 moves SS_MAXPUSH optimisation from */
970 /* the header macros to PL_savestack_max */
971 PL_savestack_max -= SS_MAXPUSH;
972#endif
635 973
636#if !PERL_VERSION_ATLEAST (5,10,0) 974#if !PERL_VERSION_ATLEAST (5,10,0)
637 New(54,PL_retstack,4,OP*); 975 New(54,PL_retstack,4,OP*);
638 PL_retstack_ix = 0; 976 PL_retstack_ix = 0;
639 PL_retstack_max = 4; 977 PL_retstack_max = 4;
… …
663 } 1001 }
664 1002
665 Safefree (PL_tmps_stack); 1003 Safefree (PL_tmps_stack);
666 Safefree (PL_markstack); 1004 Safefree (PL_markstack);
667 Safefree (PL_scopestack); 1005 Safefree (PL_scopestack);
1006#if HAS_SCOPESTACK_NAME
1007 Safefree (PL_scopestack_name);
1008#endif
668 Safefree (PL_savestack); 1009 Safefree (PL_savestack);
669#if !PERL_VERSION_ATLEAST (5,10,0) 1010#if !PERL_VERSION_ATLEAST (5,10,0)
670 Safefree (PL_retstack); 1011 Safefree (PL_retstack);
671#endif 1012#endif
672} 1013}
673 1014
1015#define CORO_RSS \
1016 rss += sizeof (SYM (curstackinfo)); \
1017 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
1018 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
1019 rss += SYM (tmps_max) * sizeof (SV *); \
1020 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
1021 rss += SYM (scopestack_max) * sizeof (I32); \
1022 rss += SYM (savestack_max) * sizeof (ANY);
1023
674static size_t 1024static size_t
675coro_rss (pTHX_ struct coro *coro) 1025coro_rss (pTHX_ struct coro *coro)
676{ 1026{
677 size_t rss = sizeof (*coro); 1027 size_t rss = sizeof (*coro);
678 1028
679 if (coro->mainstack) 1029 if (coro->mainstack)
680 { 1030 {
681 perl_slots tmp_slot;
682 perl_slots *slot;
683
684 if (coro->flags & CF_RUNNING) 1031 if (coro->flags & CF_RUNNING)
685 { 1032 {
686 slot = &tmp_slot; 1033 #define SYM(sym) PL_ ## sym
687 1034 CORO_RSS;
688 #define VAR(name,type) slot->name = PL_ ## name;
689 # include "state.h"
690 #undef VAR 1035 #undef SYM
691 } 1036 }
692 else 1037 else
693 slot = coro->slot;
694
695 if (slot)
696 { 1038 {
697 rss += sizeof (slot->curstackinfo); 1039 #define SYM(sym) coro->slot->sym
698 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1040 CORO_RSS;
699 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1041 #undef SYM
700 rss += slot->tmps_max * sizeof (SV *);
701 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
702 rss += slot->scopestack_max * sizeof (I32);
703 rss += slot->savestack_max * sizeof (ANY);
704
705#if !PERL_VERSION_ATLEAST (5,10,0)
706 rss += slot->retstack_max * sizeof (OP *);
707#endif
708 } 1042 }
709 } 1043 }
710 1044
711 return rss; 1045 return rss;
712} 1046}
… …
725#endif 1059#endif
726 1060
727/* 1061/*
728 * This overrides the default magic get method of %SIG elements. 1062 * This overrides the default magic get method of %SIG elements.
729 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1063 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
730 * and instead of tryign to save and restore the hash elements, we just provide 1064 * and instead of trying to save and restore the hash elements (extremely slow),
731 * readback here. 1065 * we just provide our own readback here.
732 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
733 * not expecting this to actually change the hook. This is a potential problem
734 * when a schedule happens then, but we ignore this.
735 */ 1066 */
736static int 1067static int ecb_cold
737coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1068coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
738{ 1069{
739 const char *s = MgPV_nolen_const (mg); 1070 const char *s = MgPV_nolen_const (mg);
740 1071
741 if (*s == '_') 1072 if (*s == '_')
742 { 1073 {
743 SV **svp = 0; 1074 SV **svp = 0;
744 1075
745 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1076 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
746 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1077 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
747 1078
748 if (svp) 1079 if (svp)
749 { 1080 {
750 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1081 SV *ssv;
1082
1083 if (!*svp)
1084 ssv = &PL_sv_undef;
1085 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1086 ssv = sv_2mortal (newRV_inc (*svp));
1087 else
1088 ssv = *svp;
1089
1090 sv_setsv (sv, ssv);
751 return 0; 1091 return 0;
752 } 1092 }
753 } 1093 }
754 1094
755 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1095 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
756} 1096}
757 1097
758static int 1098static int ecb_cold
759coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1099coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
760{ 1100{
761 const char *s = MgPV_nolen_const (mg); 1101 const char *s = MgPV_nolen_const (mg);
762 1102
763 if (*s == '_') 1103 if (*s == '_')
… …
777 } 1117 }
778 1118
779 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1119 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
780} 1120}
781 1121
782static int 1122static int ecb_cold
783coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1123coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
784{ 1124{
785 const char *s = MgPV_nolen_const (mg); 1125 const char *s = MgPV_nolen_const (mg);
786 1126
787 if (*s == '_') 1127 if (*s == '_')
… …
792 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1132 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
793 1133
794 if (svp) 1134 if (svp)
795 { 1135 {
796 SV *old = *svp; 1136 SV *old = *svp;
797 *svp = newSVsv (sv); 1137 *svp = SvOK (sv) ? newSVsv (sv) : 0;
798 SvREFCNT_dec (old); 1138 SvREFCNT_dec (old);
799 return 0; 1139 return 0;
800 } 1140 }
801 } 1141 }
802 1142
… …
814slf_check_nop (pTHX_ struct CoroSLF *frame) 1154slf_check_nop (pTHX_ struct CoroSLF *frame)
815{ 1155{
816 return 0; 1156 return 0;
817} 1157}
818 1158
819static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1159static int
1160slf_check_repeat (pTHX_ struct CoroSLF *frame)
1161{
1162 return 1;
1163}
1164
1165static UNOP init_perl_op;
1166
1167ecb_noinline static void /* noinline to keep it out of the transfer fast path */
820coro_setup (pTHX_ struct coro *coro) 1168init_perl (pTHX_ struct coro *coro)
821{ 1169{
822 /* 1170 /*
823 * emulate part of the perl startup here. 1171 * emulate part of the perl startup here.
824 */ 1172 */
825 coro_init_stacks (aTHX); 1173 coro_init_stacks (aTHX);
826 1174
827 PL_runops = RUNOPS_DEFAULT; 1175 PL_runops = RUNOPS_DEFAULT;
828 PL_curcop = &PL_compiling; 1176 PL_curcop = &PL_compiling;
829 PL_in_eval = EVAL_NULL; 1177 PL_in_eval = EVAL_NULL;
830 PL_comppad = 0; 1178 PL_comppad = 0;
1179 PL_comppad_name = 0;
1180 PL_comppad_name_fill = 0;
1181 PL_comppad_name_floor = 0;
831 PL_curpm = 0; 1182 PL_curpm = 0;
832 PL_curpad = 0; 1183 PL_curpad = 0;
833 PL_localizing = 0; 1184 PL_localizing = 0;
834 PL_dirty = 0;
835 PL_restartop = 0; 1185 PL_restartop = 0;
836#if PERL_VERSION_ATLEAST (5,10,0) 1186#if PERL_VERSION_ATLEAST (5,10,0)
837 PL_parser = 0; 1187 PL_parser = 0;
838#endif 1188#endif
1189 PL_hints = 0;
839 1190
840 /* recreate the die/warn hooks */ 1191 /* recreate the die/warn hooks */
841 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1192 PL_diehook = SvREFCNT_inc (rv_diehook);
842 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1193 PL_warnhook = SvREFCNT_inc (rv_warnhook);
843 1194
844 GvSV (PL_defgv) = newSV (0); 1195 GvSV (PL_defgv) = newSV (0);
845 GvAV (PL_defgv) = coro->args; coro->args = 0; 1196 GvAV (PL_defgv) = coro->args; coro->args = 0;
846 GvSV (PL_errgv) = newSV (0); 1197 GvSV (PL_errgv) = newSV (0);
847 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1198 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1199 GvHV (PL_hintgv) = newHV ();
1200#if PERL_VERSION_ATLEAST (5,10,0)
1201 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1202#endif
848 PL_rs = newSVsv (GvSV (irsgv)); 1203 PL_rs = newSVsv (GvSV (irsgv));
849 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1204 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
850 1205
851 { 1206 {
852 dSP; 1207 dSP;
853 UNOP myop; 1208 UNOP myop;
854 1209
855 Zero (&myop, 1, UNOP); 1210 Zero (&myop, 1, UNOP);
856 myop.op_next = Nullop; 1211 myop.op_next = Nullop;
1212 myop.op_type = OP_ENTERSUB;
857 myop.op_flags = OPf_WANT_VOID; 1213 myop.op_flags = OPf_WANT_VOID;
858 1214
859 PUSHMARK (SP); 1215 PUSHMARK (SP);
860 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1216 PUSHs ((SV *)coro->startcv);
861 PUTBACK; 1217 PUTBACK;
862 PL_op = (OP *)&myop; 1218 PL_op = (OP *)&myop;
863 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1219 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
864 SPAGAIN;
865 } 1220 }
866 1221
867 /* this newly created coroutine might be run on an existing cctx which most 1222 /* this newly created coroutine might be run on an existing cctx which most
868 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1223 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
869 */ 1224 */
870 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1225 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
871 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1226 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1227 slf_frame.destroy = 0;
872 1228
873 coro_throw = coro->throw; 1229 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
874} 1230 init_perl_op.op_next = PL_op;
1231 init_perl_op.op_type = OP_ENTERSUB;
1232 init_perl_op.op_ppaddr = pp_slf;
1233 /* no flags etc. required, as an init function won't be called */
875 1234
1235 PL_op = (OP *)&init_perl_op;
1236
1237 /* copy throw, in case it was set before init_perl */
1238 CORO_THROW = coro->except;
1239
1240 SWAP_SVS_ENTER (coro);
1241
1242 if (ecb_expect_false (enable_times))
1243 {
1244 coro_times_update ();
1245 coro_times_sub (coro);
1246 }
1247}
1248
876static void 1249static void
877coro_destruct (pTHX_ struct coro *coro) 1250coro_unwind_stacks (pTHX)
878{ 1251{
879 if (!IN_DESTRUCT) 1252 if (!IN_DESTRUCT)
880 { 1253 {
881 /* restore all saved variables and stuff */ 1254 /* restore all saved variables and stuff */
882 LEAVE_SCOPE (0); 1255 LEAVE_SCOPE (0);
… …
890 POPSTACK_TO (PL_mainstack); 1263 POPSTACK_TO (PL_mainstack);
891 1264
892 /* unwind main stack */ 1265 /* unwind main stack */
893 dounwind (-1); 1266 dounwind (-1);
894 } 1267 }
1268}
895 1269
896 SvREFCNT_dec (GvSV (PL_defgv)); 1270static void
897 SvREFCNT_dec (GvAV (PL_defgv)); 1271destroy_perl (pTHX_ struct coro *coro)
898 SvREFCNT_dec (GvSV (PL_errgv)); 1272{
899 SvREFCNT_dec (PL_defoutgv); 1273 SV *svf [9];
900 SvREFCNT_dec (PL_rs);
901 SvREFCNT_dec (GvSV (irsgv));
902 1274
903 SvREFCNT_dec (PL_diehook);
904 SvREFCNT_dec (PL_warnhook);
905 1275 {
1276 SV *old_current = SvRV (coro_current);
1277 struct coro *current = SvSTATE (old_current);
1278
1279 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1280
1281 save_perl (aTHX_ current);
1282
1283 /* this will cause transfer_check to croak on block*/
1284 SvRV_set (coro_current, (SV *)coro->hv);
1285
1286 load_perl (aTHX_ coro);
1287
1288 /* restore swapped sv's */
1289 SWAP_SVS_LEAVE (coro);
1290
1291 coro_unwind_stacks (aTHX);
1292
1293 coro_destruct_stacks (aTHX);
1294
1295 /* now save some sv's to be free'd later */
1296 svf [0] = GvSV (PL_defgv);
1297 svf [1] = (SV *)GvAV (PL_defgv);
1298 svf [2] = GvSV (PL_errgv);
1299 svf [3] = (SV *)PL_defoutgv;
1300 svf [4] = PL_rs;
1301 svf [5] = GvSV (irsgv);
1302 svf [6] = (SV *)GvHV (PL_hintgv);
1303 svf [7] = PL_diehook;
1304 svf [8] = PL_warnhook;
1305 assert (9 == sizeof (svf) / sizeof (*svf));
1306
1307 SvRV_set (coro_current, old_current);
1308
1309 load_perl (aTHX_ current);
1310 }
1311
1312 {
1313 unsigned int i;
1314
1315 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1316 SvREFCNT_dec (svf [i]);
1317
906 SvREFCNT_dec (coro->saved_deffh); 1318 SvREFCNT_dec (coro->saved_deffh);
907 SvREFCNT_dec (coro_throw); 1319 SvREFCNT_dec (coro->rouse_cb);
908 1320 SvREFCNT_dec (coro->invoke_cb);
909 coro_destruct_stacks (aTHX); 1321 SvREFCNT_dec (coro->invoke_av);
1322 SvREFCNT_dec (coro->on_enter_xs);
1323 SvREFCNT_dec (coro->on_leave_xs);
1324 }
910} 1325}
911 1326
912INLINE void 1327ecb_inline void
913free_coro_mortal (pTHX) 1328free_coro_mortal (pTHX)
914{ 1329{
915 if (expect_true (coro_mortal)) 1330 if (ecb_expect_true (coro_mortal))
916 { 1331 {
917 SvREFCNT_dec (coro_mortal); 1332 SvREFCNT_dec ((SV *)coro_mortal);
918 coro_mortal = 0; 1333 coro_mortal = 0;
919 } 1334 }
920} 1335}
921 1336
922static int 1337static int
923runops_trace (pTHX) 1338runops_trace (pTHX)
924{ 1339{
925 COP *oldcop = 0; 1340 COP *oldcop = 0;
926 int oldcxix = -2; 1341 int oldcxix = -2;
927 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
928 coro_cctx *cctx = coro->cctx;
929 1342
930 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1343 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
931 { 1344 {
932 PERL_ASYNC_CHECK (); 1345 PERL_ASYNC_CHECK ();
933 1346
934 if (cctx->flags & CC_TRACE_ALL) 1347 if (cctx_current->flags & CC_TRACE_ALL)
935 { 1348 {
936 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1349 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
937 { 1350 {
938 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1351 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
939 SV **bot, **top; 1352 SV **bot, **top;
940 AV *av = newAV (); /* return values */ 1353 AV *av = newAV (); /* return values */
941 SV **cb; 1354 SV **cb;
… …
978 1391
979 if (PL_curcop != &PL_compiling) 1392 if (PL_curcop != &PL_compiling)
980 { 1393 {
981 SV **cb; 1394 SV **cb;
982 1395
983 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1396 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
984 { 1397 {
985 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1398 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
986 1399
987 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1400 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
988 { 1401 {
989 runops_proc_t old_runops = PL_runops;
990 dSP; 1402 dSP;
991 GV *gv = CvGV (cx->blk_sub.cv); 1403 GV *gv = CvGV (cx->blk_sub.cv);
992 SV *fullname = sv_2mortal (newSV (0)); 1404 SV *fullname = sv_2mortal (newSV (0));
993 1405
994 if (isGV (gv)) 1406 if (isGV (gv))
… …
999 SAVETMPS; 1411 SAVETMPS;
1000 EXTEND (SP, 3); 1412 EXTEND (SP, 3);
1001 PUSHMARK (SP); 1413 PUSHMARK (SP);
1002 PUSHs (&PL_sv_yes); 1414 PUSHs (&PL_sv_yes);
1003 PUSHs (fullname); 1415 PUSHs (fullname);
1004 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1416 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1005 PUTBACK; 1417 PUTBACK;
1006 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1418 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1007 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1419 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1008 SPAGAIN; 1420 SPAGAIN;
1009 FREETMPS; 1421 FREETMPS;
… …
1012 } 1424 }
1013 1425
1014 oldcxix = cxstack_ix; 1426 oldcxix = cxstack_ix;
1015 } 1427 }
1016 1428
1017 if (cctx->flags & CC_TRACE_LINE) 1429 if (cctx_current->flags & CC_TRACE_LINE)
1018 { 1430 {
1019 dSP; 1431 dSP;
1020 1432
1021 PL_runops = RUNOPS_DEFAULT; 1433 PL_runops = RUNOPS_DEFAULT;
1022 ENTER; 1434 ENTER;
… …
1041 1453
1042 TAINT_NOT; 1454 TAINT_NOT;
1043 return 0; 1455 return 0;
1044} 1456}
1045 1457
1458static struct CoroSLF cctx_ssl_frame;
1459
1046static void 1460static void
1047prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1461slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1048{ 1462{
1049 ta->prev = (struct coro *)cctx;
1050 ta->next = 0; 1463 ta->prev = 0;
1051} 1464}
1052 1465
1053/* inject a fake call to Coro::State::_cctx_init into the execution */ 1466static int
1054/* _cctx_init should be careful, as it could be called at almost any time */ 1467slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1055/* during execution of a perl program */
1056/* also initialises PL_top_env */
1057static void NOINLINE
1058cctx_prepare (pTHX_ coro_cctx *cctx)
1059{ 1468{
1060 dSP; 1469 *frame = cctx_ssl_frame;
1061 UNOP myop;
1062 1470
1471 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1472}
1473
1474/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1475static void ecb_noinline
1476cctx_prepare (pTHX)
1477{
1063 PL_top_env = &PL_start_env; 1478 PL_top_env = &PL_start_env;
1064 1479
1065 if (cctx->flags & CC_TRACE) 1480 if (cctx_current->flags & CC_TRACE)
1066 PL_runops = runops_trace; 1481 PL_runops = runops_trace;
1067 1482
1068 Zero (&myop, 1, UNOP); 1483 /* we already must be executing an SLF op, there is no other valid way
1069 myop.op_next = PL_op; 1484 * that can lead to creation of a new cctx */
1070 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1485 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1486 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1071 1487
1072 PUSHMARK (SP); 1488 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1073 EXTEND (SP, 2); 1489 cctx_ssl_frame = slf_frame;
1074 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1490
1075 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1491 slf_frame.prepare = slf_prepare_set_stacklevel;
1076 PUTBACK; 1492 slf_frame.check = slf_check_set_stacklevel;
1077 PL_op = (OP *)&myop;
1078 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1079 SPAGAIN;
1080} 1493}
1081 1494
1082/* the tail of transfer: execute stuff we can only do after a transfer */ 1495/* the tail of transfer: execute stuff we can only do after a transfer */
1083INLINE void 1496ecb_inline void
1084transfer_tail (pTHX) 1497transfer_tail (pTHX)
1085{ 1498{
1086 free_coro_mortal (aTHX); 1499 free_coro_mortal (aTHX);
1500}
1501
1502/* try to exit the same way perl's main function would do */
1503/* we do not bother resetting the environment or other things *7
1504/* that are not, uhm, essential */
1505/* this obviously also doesn't work when perl is embedded */
1506static void ecb_noinline ecb_cold
1507perlish_exit (pTHX)
1508{
1509 int exitstatus = perl_destruct (PL_curinterp);
1510 perl_free (PL_curinterp);
1511 exit (exitstatus);
1087} 1512}
1088 1513
1089/* 1514/*
1090 * this is a _very_ stripped down perl interpreter ;) 1515 * this is a _very_ stripped down perl interpreter ;)
1091 */ 1516 */
… …
1103 /* normally we would need to skip the entersub here */ 1528 /* normally we would need to skip the entersub here */
1104 /* not doing so will re-execute it, which is exactly what we want */ 1529 /* not doing so will re-execute it, which is exactly what we want */
1105 /* PL_nop = PL_nop->op_next */ 1530 /* PL_nop = PL_nop->op_next */
1106 1531
1107 /* inject a fake subroutine call to cctx_init */ 1532 /* inject a fake subroutine call to cctx_init */
1108 cctx_prepare (aTHX_ (coro_cctx *)arg); 1533 cctx_prepare (aTHX);
1109 1534
1110 /* cctx_run is the alternative tail of transfer() */ 1535 /* cctx_run is the alternative tail of transfer() */
1111 transfer_tail (aTHX); 1536 transfer_tail (aTHX);
1112 1537
1113 /* somebody or something will hit me for both perl_run and PL_restartop */ 1538 /* somebody or something will hit me for both perl_run and PL_restartop */
1114 PL_restartop = PL_op; 1539 PL_restartop = PL_op;
1115 perl_run (PL_curinterp); 1540 perl_run (PL_curinterp);
1541 /*
1542 * Unfortunately, there is no way to get at the return values of the
1543 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1544 * runtime errors here, as this is just a random interpreter, not a thread.
1545 */
1546
1547 /*
1548 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1549 * requires PL_scopestack_ix, so do it here if required.
1550 */
1551 if (!PL_scopestack_ix)
1552 ENTER;
1116 1553
1117 /* 1554 /*
1118 * If perl-run returns we assume exit() was being called or the coro 1555 * If perl-run returns we assume exit() was being called or the coro
1119 * fell off the end, which seems to be the only valid (non-bug) 1556 * fell off the end, which seems to be the only valid (non-bug)
1120 * reason for perl_run to return. We try to exit by jumping to the 1557 * reason for perl_run to return. We try to mimic whatever perl is normally
1121 * bootstrap-time "top" top_env, as we cannot restore the "main" 1558 * doing in that case. YMMV.
1122 * coroutine as Coro has no such concept
1123 */ 1559 */
1124 PL_top_env = main_top_env; 1560 perlish_exit (aTHX);
1125 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1126 } 1561 }
1127} 1562}
1128 1563
1129static coro_cctx * 1564static coro_cctx *
1130cctx_new () 1565cctx_new (void)
1131{ 1566{
1132 coro_cctx *cctx; 1567 coro_cctx *cctx;
1133 1568
1134 ++cctx_count; 1569 ++cctx_count;
1135 New (0, cctx, 1, coro_cctx); 1570 New (0, cctx, 1, coro_cctx);
… …
1141 return cctx; 1576 return cctx;
1142} 1577}
1143 1578
1144/* create a new cctx only suitable as source */ 1579/* create a new cctx only suitable as source */
1145static coro_cctx * 1580static coro_cctx *
1146cctx_new_empty () 1581cctx_new_empty (void)
1147{ 1582{
1148 coro_cctx *cctx = cctx_new (); 1583 coro_cctx *cctx = cctx_new ();
1149 1584
1150 cctx->sptr = 0; 1585 cctx->stack.sptr = 0;
1151 coro_create (&cctx->cctx, 0, 0, 0, 0); 1586 coro_create (&cctx->cctx, 0, 0, 0, 0);
1152 1587
1153 return cctx; 1588 return cctx;
1154} 1589}
1155 1590
1156/* create a new cctx suitable as destination/running a perl interpreter */ 1591/* create a new cctx suitable as destination/running a perl interpreter */
1157static coro_cctx * 1592static coro_cctx *
1158cctx_new_run () 1593cctx_new_run (void)
1159{ 1594{
1160 coro_cctx *cctx = cctx_new (); 1595 coro_cctx *cctx = cctx_new ();
1161 void *stack_start;
1162 size_t stack_size;
1163 1596
1164#if HAVE_MMAP 1597 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1165 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1166 /* mmap supposedly does allocate-on-write for us */
1167 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1168
1169 if (cctx->sptr != (void *)-1)
1170 {
1171 #if CORO_STACKGUARD
1172 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1173 #endif
1174 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1175 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1176 cctx->flags |= CC_MAPPED;
1177 } 1598 {
1178 else
1179#endif
1180 {
1181 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1182 New (0, cctx->sptr, cctx_stacksize, long);
1183
1184 if (!cctx->sptr)
1185 {
1186 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1599 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1187 _exit (EXIT_FAILURE); 1600 _exit (EXIT_FAILURE);
1188 }
1189
1190 stack_start = cctx->sptr;
1191 stack_size = cctx->ssize;
1192 } 1601 }
1193 1602
1194 #if CORO_USE_VALGRIND
1195 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1196 #endif
1197
1198 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1603 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1199 1604
1200 return cctx; 1605 return cctx;
1201} 1606}
1202 1607
1203static void 1608static void
1204cctx_destroy (coro_cctx *cctx) 1609cctx_destroy (coro_cctx *cctx)
1205{ 1610{
1206 if (!cctx) 1611 if (!cctx)
1207 return; 1612 return;
1208 1613
1614 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1615
1209 --cctx_count; 1616 --cctx_count;
1210 coro_destroy (&cctx->cctx); 1617 coro_destroy (&cctx->cctx);
1211 1618
1212 /* coro_transfer creates new, empty cctx's */ 1619 coro_stack_free (&cctx->stack);
1213 if (cctx->sptr)
1214 {
1215 #if CORO_USE_VALGRIND
1216 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1217 #endif
1218
1219#if HAVE_MMAP
1220 if (cctx->flags & CC_MAPPED)
1221 munmap (cctx->sptr, cctx->ssize);
1222 else
1223#endif
1224 Safefree (cctx->sptr);
1225 }
1226 1620
1227 Safefree (cctx); 1621 Safefree (cctx);
1228} 1622}
1229 1623
1230/* wether this cctx should be destructed */ 1624/* wether this cctx should be destructed */
1231#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1625#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1232 1626
1233static coro_cctx * 1627static coro_cctx *
1234cctx_get (pTHX) 1628cctx_get (pTHX)
1235{ 1629{
1236 while (expect_true (cctx_first)) 1630 while (ecb_expect_true (cctx_first))
1237 { 1631 {
1238 coro_cctx *cctx = cctx_first; 1632 coro_cctx *cctx = cctx_first;
1239 cctx_first = cctx->next; 1633 cctx_first = cctx->next;
1240 --cctx_idle; 1634 --cctx_idle;
1241 1635
1242 if (expect_true (!CCTX_EXPIRED (cctx))) 1636 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1243 return cctx; 1637 return cctx;
1244 1638
1245 cctx_destroy (cctx); 1639 cctx_destroy (cctx);
1246 } 1640 }
1247 1641
… …
1249} 1643}
1250 1644
1251static void 1645static void
1252cctx_put (coro_cctx *cctx) 1646cctx_put (coro_cctx *cctx)
1253{ 1647{
1254 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1648 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1255 1649
1256 /* free another cctx if overlimit */ 1650 /* free another cctx if overlimit */
1257 if (expect_false (cctx_idle >= cctx_max_idle)) 1651 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1258 { 1652 {
1259 coro_cctx *first = cctx_first; 1653 coro_cctx *first = cctx_first;
1260 cctx_first = first->next; 1654 cctx_first = first->next;
1261 --cctx_idle; 1655 --cctx_idle;
1262 1656
… …
1273static void 1667static void
1274transfer_check (pTHX_ struct coro *prev, struct coro *next) 1668transfer_check (pTHX_ struct coro *prev, struct coro *next)
1275{ 1669{
1276 /* TODO: throwing up here is considered harmful */ 1670 /* TODO: throwing up here is considered harmful */
1277 1671
1278 if (expect_true (prev != next)) 1672 if (ecb_expect_true (prev != next))
1279 { 1673 {
1280 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1674 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1281 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1675 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1282 1676
1283 if (expect_false (next->flags & CF_RUNNING)) 1677 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1284 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1285
1286 if (expect_false (next->flags & CF_DESTROYED))
1287 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1678 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1288 1679
1289#if !PERL_VERSION_ATLEAST (5,10,0) 1680#if !PERL_VERSION_ATLEAST (5,10,0)
1290 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1681 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1291 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1682 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1292#endif 1683#endif
1293 } 1684 }
1294} 1685}
1295 1686
1296/* always use the TRANSFER macro */ 1687/* always use the TRANSFER macro */
1297static void NOINLINE /* noinline so we have a fixed stackframe */ 1688static void ecb_noinline /* noinline so we have a fixed stackframe */
1298transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1689transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1299{ 1690{
1300 dSTACKLEVEL; 1691 dSTACKLEVEL;
1301 1692
1302 /* sometimes transfer is only called to set idle_sp */ 1693 /* sometimes transfer is only called to set idle_sp */
1303 if (expect_false (!next)) 1694 if (ecb_expect_false (!prev))
1304 { 1695 {
1305 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1696 cctx_current->idle_sp = STACKLEVEL;
1306 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1697 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1307 } 1698 }
1308 else if (expect_true (prev != next)) 1699 else if (ecb_expect_true (prev != next))
1309 { 1700 {
1310 coro_cctx *prev__cctx; 1701 coro_cctx *cctx_prev;
1311 1702
1312 if (expect_false (prev->flags & CF_NEW)) 1703 if (ecb_expect_false (prev->flags & CF_NEW))
1313 { 1704 {
1314 /* create a new empty/source context */ 1705 /* create a new empty/source context */
1315 prev->cctx = cctx_new_empty ();
1316 prev->flags &= ~CF_NEW; 1706 prev->flags &= ~CF_NEW;
1317 prev->flags |= CF_RUNNING; 1707 prev->flags |= CF_RUNNING;
1318 } 1708 }
1319 1709
1320 prev->flags &= ~CF_RUNNING; 1710 prev->flags &= ~CF_RUNNING;
1321 next->flags |= CF_RUNNING; 1711 next->flags |= CF_RUNNING;
1322 1712
1323 /* first get rid of the old state */ 1713 /* first get rid of the old state */
1324 save_perl (aTHX_ prev); 1714 save_perl (aTHX_ prev);
1325 1715
1326 if (expect_false (next->flags & CF_NEW)) 1716 if (ecb_expect_false (next->flags & CF_NEW))
1327 { 1717 {
1328 /* need to start coroutine */ 1718 /* need to start coroutine */
1329 next->flags &= ~CF_NEW; 1719 next->flags &= ~CF_NEW;
1330 /* setup coroutine call */ 1720 /* setup coroutine call */
1331 coro_setup (aTHX_ next); 1721 init_perl (aTHX_ next);
1332 } 1722 }
1333 else 1723 else
1334 load_perl (aTHX_ next); 1724 load_perl (aTHX_ next);
1335 1725
1336 prev__cctx = prev->cctx;
1337
1338 /* possibly untie and reuse the cctx */ 1726 /* possibly untie and reuse the cctx */
1339 if (expect_true ( 1727 if (ecb_expect_true (
1340 prev__cctx->idle_sp == (void *)stacklevel 1728 cctx_current->idle_sp == STACKLEVEL
1341 && !(prev__cctx->flags & CC_TRACE) 1729 && !(cctx_current->flags & CC_TRACE)
1342 && !force_cctx 1730 && !force_cctx
1343 )) 1731 ))
1344 { 1732 {
1345 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1733 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1346 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1734 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1347 1735
1348 prev->cctx = 0;
1349
1350 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1736 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1351 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1737 /* without this the next cctx_get might destroy the running cctx while still in use */
1352 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1738 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1353 if (!next->cctx) 1739 if (ecb_expect_true (!next->cctx))
1354 next->cctx = cctx_get (aTHX); 1740 next->cctx = cctx_get (aTHX);
1355 1741
1356 cctx_put (prev__cctx); 1742 cctx_put (cctx_current);
1357 } 1743 }
1744 else
1745 prev->cctx = cctx_current;
1358 1746
1359 ++next->usecount; 1747 ++next->usecount;
1360 1748
1361 if (expect_true (!next->cctx)) 1749 cctx_prev = cctx_current;
1362 next->cctx = cctx_get (aTHX); 1750 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1363 1751
1364 if (expect_false (prev__cctx != next->cctx)) 1752 next->cctx = 0;
1753
1754 if (ecb_expect_false (cctx_prev != cctx_current))
1365 { 1755 {
1366 prev__cctx->top_env = PL_top_env; 1756 cctx_prev->top_env = PL_top_env;
1367 PL_top_env = next->cctx->top_env; 1757 PL_top_env = cctx_current->top_env;
1368 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1758 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1369 } 1759 }
1370 1760
1371 transfer_tail (aTHX); 1761 transfer_tail (aTHX);
1372 } 1762 }
1373} 1763}
… …
1375#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1765#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1376#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1766#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1377 1767
1378/** high level stuff ********************************************************/ 1768/** high level stuff ********************************************************/
1379 1769
1770/* this function is actually Coro, not Coro::State, but we call it from here */
1771/* because it is convenient - but it hasn't been declared yet for that reason */
1380static int 1772static void
1773coro_call_on_destroy (pTHX_ struct coro *coro);
1774
1775static void
1381coro_state_destroy (pTHX_ struct coro *coro) 1776coro_state_destroy (pTHX_ struct coro *coro)
1382{ 1777{
1383 if (coro->flags & CF_DESTROYED) 1778 if (coro->flags & CF_ZOMBIE)
1384 return 0; 1779 return;
1385 1780
1386 if (coro->on_destroy)
1387 coro->on_destroy (aTHX_ coro); 1781 slf_destroy (aTHX_ coro);
1388 1782
1389 coro->flags |= CF_DESTROYED; 1783 coro->flags |= CF_ZOMBIE;
1390 1784
1391 if (coro->flags & CF_READY) 1785 if (coro->flags & CF_READY)
1392 { 1786 {
1393 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1787 /* reduce nready, as destroying a ready coro effectively unreadies it */
1394 /* alternative: look through all ready queues and remove the coro */ 1788 /* alternative: look through all ready queues and remove the coro */
1395 --coro_nready; 1789 --coro_nready;
1396 } 1790 }
1397 else 1791 else
1398 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1792 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1399 1793
1400 if (coro->mainstack && coro->mainstack != main_mainstack)
1401 {
1402 struct coro temp;
1403
1404 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1405
1406 save_perl (aTHX_ &temp);
1407 load_perl (aTHX_ coro);
1408
1409 coro_destruct (aTHX_ coro);
1410
1411 load_perl (aTHX_ &temp);
1412
1413 coro->slot = 0;
1414 }
1415
1416 cctx_destroy (coro->cctx);
1417 SvREFCNT_dec (coro->args);
1418
1419 if (coro->next) coro->next->prev = coro->prev; 1794 if (coro->next) coro->next->prev = coro->prev;
1420 if (coro->prev) coro->prev->next = coro->next; 1795 if (coro->prev) coro->prev->next = coro->next;
1421 if (coro == coro_first) coro_first = coro->next; 1796 if (coro == coro_first) coro_first = coro->next;
1422 1797
1423 return 1; 1798 if (coro->mainstack
1799 && coro->mainstack != main_mainstack
1800 && coro->slot
1801 && !PL_dirty)
1802 destroy_perl (aTHX_ coro);
1803
1804 cctx_destroy (coro->cctx);
1805 SvREFCNT_dec (coro->startcv);
1806 SvREFCNT_dec (coro->args);
1807 SvREFCNT_dec (coro->swap_sv);
1808 SvREFCNT_dec (CORO_THROW);
1809
1810 coro_call_on_destroy (aTHX_ coro);
1811
1812 /* more destruction mayhem in coro_state_free */
1424} 1813}
1425 1814
1426static int 1815static int
1427coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1816coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1428{ 1817{
1429 struct coro *coro = (struct coro *)mg->mg_ptr; 1818 struct coro *coro = (struct coro *)mg->mg_ptr;
1430 mg->mg_ptr = 0; 1819 mg->mg_ptr = 0;
1431 1820
1432 coro->hv = 0;
1433
1434 if (--coro->refcnt < 0)
1435 {
1436 coro_state_destroy (aTHX_ coro); 1821 coro_state_destroy (aTHX_ coro);
1822 SvREFCNT_dec (coro->on_destroy);
1823 SvREFCNT_dec (coro->status);
1824
1437 Safefree (coro); 1825 Safefree (coro);
1438 }
1439 1826
1440 return 0; 1827 return 0;
1441} 1828}
1442 1829
1443static int 1830static int ecb_cold
1444coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1831coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1445{ 1832{
1446 struct coro *coro = (struct coro *)mg->mg_ptr; 1833 /* called when perl clones the current process the slow way (windows process emulation) */
1447 1834 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1448 ++coro->refcnt; 1835 mg->mg_ptr = 0;
1836 mg->mg_virtual = 0;
1449 1837
1450 return 0; 1838 return 0;
1451} 1839}
1452 1840
1453static MGVTBL coro_state_vtbl = { 1841static MGVTBL coro_state_vtbl = {
… …
1478 TRANSFER (ta, 1); 1866 TRANSFER (ta, 1);
1479} 1867}
1480 1868
1481/** Coro ********************************************************************/ 1869/** Coro ********************************************************************/
1482 1870
1483INLINE void 1871ecb_inline void
1484coro_enq (pTHX_ struct coro *coro) 1872coro_enq (pTHX_ struct coro *coro)
1485{ 1873{
1486 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1874 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1487}
1488 1875
1489INLINE SV * 1876 SvREFCNT_inc_NN (coro->hv);
1877
1878 coro->next_ready = 0;
1879 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1880 ready [1] = coro;
1881}
1882
1883ecb_inline struct coro *
1490coro_deq (pTHX) 1884coro_deq (pTHX)
1491{ 1885{
1492 int prio; 1886 int prio;
1493 1887
1494 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1888 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1495 if (AvFILLp (coro_ready [prio]) >= 0) 1889 {
1496 return av_shift (coro_ready [prio]); 1890 struct coro **ready = coro_ready [prio];
1891
1892 if (ready [0])
1893 {
1894 struct coro *coro = ready [0];
1895 ready [0] = coro->next_ready;
1896 return coro;
1897 }
1898 }
1497 1899
1498 return 0; 1900 return 0;
1901}
1902
1903static void
1904invoke_sv_ready_hook_helper (void)
1905{
1906 dTHX;
1907 dSP;
1908
1909 ENTER;
1910 SAVETMPS;
1911
1912 PUSHMARK (SP);
1913 PUTBACK;
1914 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1915
1916 FREETMPS;
1917 LEAVE;
1499} 1918}
1500 1919
1501static int 1920static int
1502api_ready (pTHX_ SV *coro_sv) 1921api_ready (pTHX_ SV *coro_sv)
1503{ 1922{
1504 struct coro *coro;
1505 SV *sv_hook;
1506 void (*xs_hook)(void);
1507
1508 if (SvROK (coro_sv))
1509 coro_sv = SvRV (coro_sv);
1510
1511 coro = SvSTATE (coro_sv); 1923 struct coro *coro = SvSTATE (coro_sv);
1512 1924
1513 if (coro->flags & CF_READY) 1925 if (coro->flags & CF_READY)
1514 return 0; 1926 return 0;
1515 1927
1516 coro->flags |= CF_READY; 1928 coro->flags |= CF_READY;
1517 1929
1518 sv_hook = coro_nready ? 0 : coro_readyhook;
1519 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1520
1521 coro_enq (aTHX_ coro); 1930 coro_enq (aTHX_ coro);
1522 ++coro_nready;
1523 1931
1524 if (sv_hook) 1932 if (!coro_nready++)
1525 { 1933 if (coroapi.readyhook)
1526 dSP; 1934 coroapi.readyhook ();
1527
1528 ENTER;
1529 SAVETMPS;
1530
1531 PUSHMARK (SP);
1532 PUTBACK;
1533 call_sv (sv_hook, G_DISCARD);
1534 SPAGAIN;
1535
1536 FREETMPS;
1537 LEAVE;
1538 }
1539
1540 if (xs_hook)
1541 xs_hook ();
1542 1935
1543 return 1; 1936 return 1;
1544} 1937}
1545 1938
1546static int 1939static int
1547api_is_ready (pTHX_ SV *coro_sv) 1940api_is_ready (pTHX_ SV *coro_sv)
1548{ 1941{
1549 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1942 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1550} 1943}
1551 1944
1552INLINE void 1945/* expects to own a reference to next->hv */
1946ecb_inline void
1553prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1947prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1554{ 1948{
1555 SV *prev_sv, *next_sv;
1556
1557 for (;;)
1558 {
1559 next_sv = coro_deq (aTHX);
1560
1561 /* nothing to schedule: call the idle handler */
1562 if (expect_false (!next_sv))
1563 {
1564 dSP;
1565
1566 ENTER;
1567 SAVETMPS;
1568
1569 PUSHMARK (SP);
1570 PUTBACK;
1571 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1572 SPAGAIN;
1573
1574 FREETMPS;
1575 LEAVE;
1576 continue;
1577 }
1578
1579 ta->next = SvSTATE_hv (next_sv);
1580
1581 /* cannot transfer to destroyed coros, skip and look for next */
1582 if (expect_false (ta->next->flags & CF_DESTROYED))
1583 {
1584 SvREFCNT_dec (next_sv);
1585 /* coro_nready has already been taken care of by destroy */
1586 continue;
1587 }
1588
1589 --coro_nready;
1590 break;
1591 }
1592
1593 /* free this only after the transfer */
1594 prev_sv = SvRV (coro_current); 1949 SV *prev_sv = SvRV (coro_current);
1950
1595 ta->prev = SvSTATE_hv (prev_sv); 1951 ta->prev = SvSTATE_hv (prev_sv);
1952 ta->next = next;
1953
1596 TRANSFER_CHECK (*ta); 1954 TRANSFER_CHECK (*ta);
1597 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1955
1598 ta->next->flags &= ~CF_READY;
1599 SvRV_set (coro_current, next_sv); 1956 SvRV_set (coro_current, (SV *)next->hv);
1600 1957
1601 free_coro_mortal (aTHX); 1958 free_coro_mortal (aTHX);
1602 coro_mortal = prev_sv; 1959 coro_mortal = prev_sv;
1603} 1960}
1604 1961
1605INLINE void 1962static void
1963prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1964{
1965 for (;;)
1966 {
1967 struct coro *next = coro_deq (aTHX);
1968
1969 if (ecb_expect_true (next))
1970 {
1971 /* cannot transfer to destroyed coros, skip and look for next */
1972 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1973 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1974 else
1975 {
1976 next->flags &= ~CF_READY;
1977 --coro_nready;
1978
1979 prepare_schedule_to (aTHX_ ta, next);
1980 break;
1981 }
1982 }
1983 else
1984 {
1985 /* nothing to schedule: call the idle handler */
1986 if (SvROK (sv_idle)
1987 && SvOBJECT (SvRV (sv_idle)))
1988 {
1989 if (SvRV (sv_idle) == SvRV (coro_current))
1990 {
1991 require_pv ("Carp");
1992
1993 {
1994 dSP;
1995
1996 ENTER;
1997 SAVETMPS;
1998
1999 PUSHMARK (SP);
2000 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2001 PUTBACK;
2002 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2003
2004 FREETMPS;
2005 LEAVE;
2006 }
2007 }
2008
2009 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
2010 api_ready (aTHX_ SvRV (sv_idle));
2011 --coro_nready;
2012 }
2013 else
2014 {
2015 /* TODO: deprecated, remove, cannot work reliably *//*D*/
2016 dSP;
2017
2018 ENTER;
2019 SAVETMPS;
2020
2021 PUSHMARK (SP);
2022 PUTBACK;
2023 call_sv (sv_idle, G_VOID | G_DISCARD);
2024
2025 FREETMPS;
2026 LEAVE;
2027 }
2028 }
2029 }
2030}
2031
2032ecb_inline void
1606prepare_cede (pTHX_ struct coro_transfer_args *ta) 2033prepare_cede (pTHX_ struct coro_transfer_args *ta)
1607{ 2034{
1608 api_ready (aTHX_ coro_current); 2035 api_ready (aTHX_ coro_current);
1609 prepare_schedule (aTHX_ ta); 2036 prepare_schedule (aTHX_ ta);
1610} 2037}
1611 2038
1612INLINE void 2039ecb_inline void
1613prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2040prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1614{ 2041{
1615 SV *prev = SvRV (coro_current); 2042 SV *prev = SvRV (coro_current);
1616 2043
1617 if (coro_nready) 2044 if (coro_nready)
… …
1630 2057
1631 prepare_schedule (aTHX_ &ta); 2058 prepare_schedule (aTHX_ &ta);
1632 TRANSFER (ta, 1); 2059 TRANSFER (ta, 1);
1633} 2060}
1634 2061
2062static void
2063api_schedule_to (pTHX_ SV *coro_sv)
2064{
2065 struct coro_transfer_args ta;
2066 struct coro *next = SvSTATE (coro_sv);
2067
2068 SvREFCNT_inc_NN (coro_sv);
2069 prepare_schedule_to (aTHX_ &ta, next);
2070}
2071
1635static int 2072static int
1636api_cede (pTHX) 2073api_cede (pTHX)
1637{ 2074{
1638 struct coro_transfer_args ta; 2075 struct coro_transfer_args ta;
1639 2076
1640 prepare_cede (aTHX_ &ta); 2077 prepare_cede (aTHX_ &ta);
1641 2078
1642 if (expect_true (ta.prev != ta.next)) 2079 if (ecb_expect_true (ta.prev != ta.next))
1643 { 2080 {
1644 TRANSFER (ta, 1); 2081 TRANSFER (ta, 1);
1645 return 1; 2082 return 1;
1646 } 2083 }
1647 else 2084 else
… …
1666static void 2103static void
1667api_trace (pTHX_ SV *coro_sv, int flags) 2104api_trace (pTHX_ SV *coro_sv, int flags)
1668{ 2105{
1669 struct coro *coro = SvSTATE (coro_sv); 2106 struct coro *coro = SvSTATE (coro_sv);
1670 2107
2108 if (coro->flags & CF_RUNNING)
2109 croak ("cannot enable tracing on a running coroutine, caught");
2110
1671 if (flags & CC_TRACE) 2111 if (flags & CC_TRACE)
1672 { 2112 {
1673 if (!coro->cctx) 2113 if (!coro->cctx)
1674 coro->cctx = cctx_new_run (); 2114 coro->cctx = cctx_new_run ();
1675 else if (!(coro->cctx->flags & CC_TRACE)) 2115 else if (!(coro->cctx->flags & CC_TRACE))
1676 croak ("cannot enable tracing on coroutine with custom stack,"); 2116 croak ("cannot enable tracing on coroutine with custom stack, caught");
1677 2117
1678 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2118 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1679 } 2119 }
1680 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2120 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1681 { 2121 {
… …
1684 if (coro->flags & CF_RUNNING) 2124 if (coro->flags & CF_RUNNING)
1685 PL_runops = RUNOPS_DEFAULT; 2125 PL_runops = RUNOPS_DEFAULT;
1686 else 2126 else
1687 coro->slot->runops = RUNOPS_DEFAULT; 2127 coro->slot->runops = RUNOPS_DEFAULT;
1688 } 2128 }
2129}
2130
2131static void
2132coro_push_av (pTHX_ AV *av, I32 gimme_v)
2133{
2134 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2135 {
2136 dSP;
2137
2138 if (gimme_v == G_SCALAR)
2139 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2140 else
2141 {
2142 int i;
2143 EXTEND (SP, AvFILLp (av) + 1);
2144
2145 for (i = 0; i <= AvFILLp (av); ++i)
2146 PUSHs (AvARRAY (av)[i]);
2147 }
2148
2149 PUTBACK;
2150 }
2151}
2152
2153static void
2154coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2155{
2156 if (!coro->on_destroy)
2157 coro->on_destroy = newAV ();
2158
2159 av_push (coro->on_destroy, cb);
2160}
2161
2162static void
2163slf_destroy_join (pTHX_ struct CoroSLF *frame)
2164{
2165 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2166}
2167
2168static int
2169slf_check_join (pTHX_ struct CoroSLF *frame)
2170{
2171 struct coro *coro = (struct coro *)frame->data;
2172
2173 if (!coro->status)
2174 return 1;
2175
2176 frame->destroy = 0;
2177
2178 coro_push_av (aTHX_ coro->status, GIMME_V);
2179
2180 SvREFCNT_dec ((SV *)coro->hv);
2181
2182 return 0;
2183}
2184
2185static void
2186slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2187{
2188 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2189
2190 if (items > 1)
2191 croak ("join called with too many arguments");
2192
2193 if (coro->status)
2194 frame->prepare = prepare_nop;
2195 else
2196 {
2197 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2198 frame->prepare = prepare_schedule;
2199 }
2200
2201 frame->check = slf_check_join;
2202 frame->destroy = slf_destroy_join;
2203 frame->data = (void *)coro;
2204 SvREFCNT_inc (coro->hv);
2205}
2206
2207static void
2208coro_call_on_destroy (pTHX_ struct coro *coro)
2209{
2210 AV *od = coro->on_destroy;
2211
2212 if (!od)
2213 return;
2214
2215 coro->on_destroy = 0;
2216 sv_2mortal ((SV *)od);
2217
2218 while (AvFILLp (od) >= 0)
2219 {
2220 SV *cb = sv_2mortal (av_pop (od));
2221
2222 /* coro hv's (and only hv's at the moment) are supported as well */
2223 if (SvSTATEhv_p (aTHX_ cb))
2224 api_ready (aTHX_ cb);
2225 else
2226 {
2227 dSP; /* don't disturb outer sp */
2228 PUSHMARK (SP);
2229
2230 if (coro->status)
2231 {
2232 PUTBACK;
2233 coro_push_av (aTHX_ coro->status, G_ARRAY);
2234 SPAGAIN;
2235 }
2236
2237 PUTBACK;
2238 call_sv (cb, G_VOID | G_DISCARD);
2239 }
2240 }
2241}
2242
2243static void
2244coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2245{
2246 AV *av;
2247
2248 if (coro->status)
2249 {
2250 av = coro->status;
2251 av_clear (av);
2252 }
2253 else
2254 av = coro->status = newAV ();
2255
2256 /* items are actually not so common, so optimise for this case */
2257 if (items)
2258 {
2259 int i;
2260
2261 av_extend (av, items - 1);
2262
2263 for (i = 0; i < items; ++i)
2264 av_push (av, SvREFCNT_inc_NN (arg [i]));
2265 }
2266}
2267
2268static void
2269slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2270{
2271 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2272 api_ready (aTHX_ sv_manager);
2273
2274 frame->prepare = prepare_schedule;
2275 frame->check = slf_check_repeat;
2276
2277 /* as a minor optimisation, we could unwind all stacks here */
2278 /* but that puts extra pressure on pp_slf, and is not worth much */
2279 /*coro_unwind_stacks (aTHX);*/
2280}
2281
2282static void
2283slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2284{
2285 HV *coro_hv = (HV *)SvRV (coro_current);
2286
2287 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2288 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2289}
2290
2291static void
2292slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2293{
2294 HV *coro_hv;
2295 struct coro *coro;
2296
2297 if (items <= 0)
2298 croak ("Coro::cancel called without coro object,");
2299
2300 coro = SvSTATE (arg [0]);
2301 coro_hv = coro->hv;
2302
2303 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2304
2305 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2306 {
2307 /* coro currently busy cancelling something, so just notify it */
2308 coro->slf_frame.data = (void *)coro;
2309
2310 frame->prepare = prepare_nop;
2311 frame->check = slf_check_nop;
2312 }
2313 else if (coro_hv == (HV *)SvRV (coro_current))
2314 {
2315 /* cancelling the current coro is allowed, and equals terminate */
2316 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2317 }
2318 else
2319 {
2320 struct coro *self = SvSTATE_current;
2321
2322 if (!self)
2323 croak ("Coro::cancel called outside of thread content,");
2324
2325 /* otherwise we cancel directly, purely for speed reasons
2326 * unfortunately, this requires some magic trickery, as
2327 * somebody else could cancel us, so we have to fight the cancellation.
2328 * this is ugly, and hopefully fully worth the extra speed.
2329 * besides, I can't get the slow-but-safe version working...
2330 */
2331 slf_frame.data = 0;
2332 self->flags |= CF_NOCANCEL;
2333 coro_state_destroy (aTHX_ coro);
2334 self->flags &= ~CF_NOCANCEL;
2335
2336 if (slf_frame.data)
2337 {
2338 /* while we were busy we have been cancelled, so terminate */
2339 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2340 }
2341 else
2342 {
2343 frame->prepare = prepare_nop;
2344 frame->check = slf_check_nop;
2345 }
2346 }
2347}
2348
2349static int
2350slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2351{
2352 frame->prepare = 0;
2353 coro_unwind_stacks (aTHX);
2354
2355 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2356
2357 return 1;
2358}
2359
2360static int
2361safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2362{
2363 if (coro->cctx)
2364 croak ("coro inside C callback, unable to cancel at this time, caught");
2365
2366 if (coro->flags & CF_NEW)
2367 {
2368 coro_set_status (aTHX_ coro, arg, items);
2369 coro_state_destroy (aTHX_ coro);
2370 }
2371 else
2372 {
2373 if (!coro->slf_frame.prepare)
2374 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2375
2376 slf_destroy (aTHX_ coro);
2377
2378 coro_set_status (aTHX_ coro, arg, items);
2379 coro->slf_frame.prepare = prepare_nop;
2380 coro->slf_frame.check = slf_check_safe_cancel;
2381
2382 api_ready (aTHX_ (SV *)coro->hv);
2383 }
2384
2385 return 1;
2386}
2387
2388/*****************************************************************************/
2389/* async pool handler */
2390
2391static int
2392slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2393{
2394 HV *hv = (HV *)SvRV (coro_current);
2395 struct coro *coro = (struct coro *)frame->data;
2396
2397 if (!coro->invoke_cb)
2398 return 1; /* loop till we have invoke */
2399 else
2400 {
2401 hv_store (hv, "desc", sizeof ("desc") - 1,
2402 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2403
2404 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2405
2406 {
2407 dSP;
2408 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2409 PUTBACK;
2410 }
2411
2412 SvREFCNT_dec (GvAV (PL_defgv));
2413 GvAV (PL_defgv) = coro->invoke_av;
2414 coro->invoke_av = 0;
2415
2416 return 0;
2417 }
2418}
2419
2420static void
2421slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2422{
2423 HV *hv = (HV *)SvRV (coro_current);
2424 struct coro *coro = SvSTATE_hv ((SV *)hv);
2425
2426 if (ecb_expect_true (coro->saved_deffh))
2427 {
2428 /* subsequent iteration */
2429 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2430 coro->saved_deffh = 0;
2431
2432 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2433 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2434 {
2435 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2436 return;
2437 }
2438 else
2439 {
2440 av_clear (GvAV (PL_defgv));
2441 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2442
2443 if (ecb_expect_false (coro->swap_sv))
2444 {
2445 swap_svs_leave (coro);
2446 SvREFCNT_dec_NN (coro->swap_sv);
2447 coro->swap_sv = 0;
2448 }
2449
2450 coro->prio = 0;
2451
2452 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2453 api_trace (aTHX_ coro_current, 0);
2454
2455 frame->prepare = prepare_schedule;
2456 av_push (av_async_pool, SvREFCNT_inc (hv));
2457 }
2458 }
2459 else
2460 {
2461 /* first iteration, simply fall through */
2462 frame->prepare = prepare_nop;
2463 }
2464
2465 frame->check = slf_check_pool_handler;
2466 frame->data = (void *)coro;
2467}
2468
2469/*****************************************************************************/
2470/* rouse callback */
2471
2472#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2473
2474static void
2475coro_rouse_callback (pTHX_ CV *cv)
2476{
2477 dXSARGS;
2478 SV *data = (SV *)S_GENSUB_ARG;
2479
2480 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2481 {
2482 /* first call, set args */
2483 SV *coro = SvRV (data);
2484 AV *av = newAV ();
2485
2486 SvRV_set (data, (SV *)av);
2487
2488 /* better take a full copy of the arguments */
2489 while (items--)
2490 av_store (av, items, newSVsv (ST (items)));
2491
2492 api_ready (aTHX_ coro);
2493 SvREFCNT_dec (coro);
2494 }
2495
2496 XSRETURN_EMPTY;
2497}
2498
2499static int
2500slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2501{
2502 SV *data = (SV *)frame->data;
2503
2504 if (CORO_THROW)
2505 return 0;
2506
2507 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2508 return 1;
2509
2510 /* now push all results on the stack */
2511 {
2512 dSP;
2513 AV *av = (AV *)SvRV (data);
2514 int i;
2515
2516 EXTEND (SP, AvFILLp (av) + 1);
2517 for (i = 0; i <= AvFILLp (av); ++i)
2518 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2519
2520 /* we have stolen the elements, so set length to zero and free */
2521 AvFILLp (av) = -1;
2522 av_undef (av);
2523
2524 PUTBACK;
2525 }
2526
2527 return 0;
2528}
2529
2530static void
2531slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2532{
2533 SV *cb;
2534
2535 if (items)
2536 cb = arg [0];
2537 else
2538 {
2539 struct coro *coro = SvSTATE_current;
2540
2541 if (!coro->rouse_cb)
2542 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2543
2544 cb = sv_2mortal (coro->rouse_cb);
2545 coro->rouse_cb = 0;
2546 }
2547
2548 if (!SvROK (cb)
2549 || SvTYPE (SvRV (cb)) != SVt_PVCV
2550 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2551 croak ("Coro::rouse_wait called with illegal callback argument,");
2552
2553 {
2554 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2555 SV *data = (SV *)S_GENSUB_ARG;
2556
2557 frame->data = (void *)data;
2558 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2559 frame->check = slf_check_rouse_wait;
2560 }
2561}
2562
2563static SV *
2564coro_new_rouse_cb (pTHX)
2565{
2566 HV *hv = (HV *)SvRV (coro_current);
2567 struct coro *coro = SvSTATE_hv (hv);
2568 SV *data = newRV_inc ((SV *)hv);
2569 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2570
2571 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2572 SvREFCNT_dec (data); /* magicext increases the refcount */
2573
2574 SvREFCNT_dec (coro->rouse_cb);
2575 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2576
2577 return cb;
1689} 2578}
1690 2579
1691/*****************************************************************************/ 2580/*****************************************************************************/
1692/* schedule-like-function opcode (SLF) */ 2581/* schedule-like-function opcode (SLF) */
1693 2582
… …
1717 2606
1718 RETURNOP (slf_restore.op_first); 2607 RETURNOP (slf_restore.op_first);
1719} 2608}
1720 2609
1721static void 2610static void
1722slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1723{
1724 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1725}
1726
1727static void
1728slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1729{
1730 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1731
1732 frame->prepare = slf_prepare_set_stacklevel;
1733 frame->check = slf_check_nop;
1734 frame->data = (void *)SvIV (arg [0]);
1735}
1736
1737static void
1738slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2611slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1739{ 2612{
1740 SV **arg = (SV **)slf_frame.data; 2613 SV **arg = (SV **)slf_frame.data;
1741 2614
1742 prepare_transfer (aTHX_ ta, arg [0], arg [1]); 2615 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
… …
1759 frame->prepare = prepare_schedule; 2632 frame->prepare = prepare_schedule;
1760 frame->check = slf_check_nop; 2633 frame->check = slf_check_nop;
1761} 2634}
1762 2635
1763static void 2636static void
2637slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2638{
2639 struct coro *next = (struct coro *)slf_frame.data;
2640
2641 SvREFCNT_inc_NN (next->hv);
2642 prepare_schedule_to (aTHX_ ta, next);
2643}
2644
2645static void
2646slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2647{
2648 if (!items)
2649 croak ("Coro::schedule_to expects a coroutine argument, caught");
2650
2651 frame->data = (void *)SvSTATE (arg [0]);
2652 frame->prepare = slf_prepare_schedule_to;
2653 frame->check = slf_check_nop;
2654}
2655
2656static void
2657slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2658{
2659 api_ready (aTHX_ SvRV (coro_current));
2660
2661 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2662}
2663
2664static void
1764slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2665slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1765{ 2666{
1766 frame->prepare = prepare_cede; 2667 frame->prepare = prepare_cede;
1767 frame->check = slf_check_nop; 2668 frame->check = slf_check_nop;
1768} 2669}
… …
1772{ 2673{
1773 frame->prepare = prepare_cede_notself; 2674 frame->prepare = prepare_cede_notself;
1774 frame->check = slf_check_nop; 2675 frame->check = slf_check_nop;
1775} 2676}
1776 2677
1777/* we hijack an hopefully unused CV flag for our purposes */ 2678/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
1778#define CVf_SLF 0x4000 2679static void
2680slf_destroy (pTHX_ struct coro *coro)
2681{
2682 struct CoroSLF frame = coro->slf_frame;
2683
2684 /*
2685 * The on_destroy below most likely is from an SLF call.
2686 * Since by definition the SLF call will not finish when we destroy
2687 * the coro, we will have to force-finish it here, otherwise
2688 * cleanup functions cannot call SLF functions.
2689 */
2690 coro->slf_frame.prepare = 0;
2691
2692 /* this callback is reserved for slf functions needing to do cleanup */
2693 if (frame.destroy && frame.prepare && !PL_dirty)
2694 frame.destroy (aTHX_ &frame);
2695}
1779 2696
1780/* 2697/*
1781 * these not obviously related functions are all rolled into one 2698 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same 2699 * function to increase chances that they all will call transfer with the same
1783 * stack offset 2700 * stack offset
… …
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2706 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790 2707
1791 /* set up the slf frame, unless it has already been set-up */ 2708 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */ 2709 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */ 2710 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare)) 2711 if (ecb_expect_true (!slf_frame.prepare))
1795 { 2712 {
1796 /* first iteration */ 2713 /* first iteration */
1797 dSP; 2714 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1; 2715 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */ 2716 int items = SP - arg; /* args without function object */
… …
1839 } 2756 }
1840 while (slf_frame.check (aTHX_ &slf_frame)); 2757 while (slf_frame.check (aTHX_ &slf_frame));
1841 2758
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2759 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843 2760
1844 /* return value handling - mostly like entersub */
1845 {
1846 dSP;
1847 SV **bot = PL_stack_base + checkmark;
1848 int gimme = GIMME_V;
1849
1850 /* make sure we put something on the stack in scalar context */
1851 if (gimme == G_SCALAR)
1852 {
1853 if (sp == bot)
1854 XPUSHs (&PL_sv_undef);
1855
1856 SP = bot + 1;
1857 }
1858
1859 PUTBACK;
1860 }
1861
1862 /* exception handling */ 2761 /* exception handling */
1863 if (expect_false (coro_throw)) 2762 if (ecb_expect_false (CORO_THROW))
1864 { 2763 {
1865 SV *exception = sv_2mortal (coro_throw); 2764 SV *exception = sv_2mortal (CORO_THROW);
1866 2765
1867 coro_throw = 0; 2766 CORO_THROW = 0;
1868 sv_setsv (ERRSV, exception); 2767 sv_setsv (ERRSV, exception);
1869 croak (0); 2768 croak (0);
2769 }
2770
2771 /* return value handling - mostly like entersub */
2772 /* make sure we put something on the stack in scalar context */
2773 if (GIMME_V == G_SCALAR
2774 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2775 {
2776 dSP;
2777 SV **bot = PL_stack_base + checkmark;
2778
2779 if (sp == bot) /* too few, push undef */
2780 bot [1] = &PL_sv_undef;
2781 else /* too many, take last one */
2782 bot [1] = *sp;
2783
2784 SP = bot + 1;
2785
2786 PUTBACK;
1870 } 2787 }
1871 2788
1872 return NORMAL; 2789 return NORMAL;
1873} 2790}
1874 2791
… …
1902 if (PL_op->op_flags & OPf_STACKED) 2819 if (PL_op->op_flags & OPf_STACKED)
1903 { 2820 {
1904 if (items > slf_arga) 2821 if (items > slf_arga)
1905 { 2822 {
1906 slf_arga = items; 2823 slf_arga = items;
1907 free (slf_argv); 2824 Safefree (slf_argv);
1908 slf_argv = malloc (slf_arga * sizeof (SV *)); 2825 New (0, slf_argv, slf_arga, SV *);
1909 } 2826 }
1910 2827
1911 slf_argc = items; 2828 slf_argc = items;
1912 2829
1913 for (i = 0; i < items; ++i) 2830 for (i = 0; i < items; ++i)
… …
1915 } 2832 }
1916 else 2833 else
1917 slf_argc = 0; 2834 slf_argc = 0;
1918 2835
1919 PL_op->op_ppaddr = pp_slf; 2836 PL_op->op_ppaddr = pp_slf;
1920 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2837 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1921 2838
1922 PL_op = (OP *)&slf_restore; 2839 PL_op = (OP *)&slf_restore;
2840}
2841
2842/*****************************************************************************/
2843/* dynamic wind */
2844
2845static void
2846on_enterleave_call (pTHX_ SV *cb)
2847{
2848 dSP;
2849
2850 PUSHSTACK;
2851
2852 PUSHMARK (SP);
2853 PUTBACK;
2854 call_sv (cb, G_VOID | G_DISCARD);
2855 SPAGAIN;
2856
2857 POPSTACK;
2858}
2859
2860static SV *
2861coro_avp_pop_and_free (pTHX_ AV **avp)
2862{
2863 AV *av = *avp;
2864 SV *res = av_pop (av);
2865
2866 if (AvFILLp (av) < 0)
2867 {
2868 *avp = 0;
2869 SvREFCNT_dec (av);
2870 }
2871
2872 return res;
2873}
2874
2875static void
2876coro_pop_on_enter (pTHX_ void *coro)
2877{
2878 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2879 SvREFCNT_dec (cb);
2880}
2881
2882static void
2883coro_pop_on_leave (pTHX_ void *coro)
2884{
2885 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2886 on_enterleave_call (aTHX_ sv_2mortal (cb));
2887}
2888
2889static void
2890enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2891{
2892 if (!hook)
2893 return;
2894
2895 if (!*avp)
2896 {
2897 *avp = newAV ();
2898 AvREAL_off (*avp);
2899 }
2900
2901 av_push (*avp, (SV *)hook);
2902 av_push (*avp, (SV *)arg);
2903}
2904
2905static void
2906enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2907{
2908 AV *av = *avp;
2909 int i;
2910
2911 if (!av)
2912 return;
2913
2914 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2915 if (AvARRAY (av)[i] == (SV *)hook)
2916 {
2917 if (execute)
2918 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2919
2920 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2921 av_pop (av);
2922 av_pop (av);
2923 break;
2924 }
2925
2926 if (AvFILLp (av) >= 0)
2927 {
2928 *avp = 0;
2929 SvREFCNT_dec_NN (av);
2930 }
2931}
2932
2933static void
2934api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2935{
2936 struct coro *coro = SvSTATE (coro_sv);
2937
2938 if (SvSTATE_current == coro)
2939 if (enter)
2940 enter (aTHX_ enter_arg);
2941
2942 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2943 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2944}
2945
2946static void
2947api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2948{
2949 struct coro *coro = SvSTATE (coro_sv);
2950
2951 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2952 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2953}
2954
2955static void
2956savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2957{
2958 struct coro *coro = SvSTATE_current;
2959
2960 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2961}
2962
2963static void
2964savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2965{
2966 struct coro *coro = SvSTATE_current;
2967
2968 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2969}
2970
2971static void
2972api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2973{
2974 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2975
2976 /* this ought to be much cheaper than malloc + a single destructor call */
2977 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2978 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
1923} 2979}
1924 2980
1925/*****************************************************************************/ 2981/*****************************************************************************/
1926/* PerlIO::cede */ 2982/* PerlIO::cede */
1927 2983
… …
1929{ 2985{
1930 PerlIOBuf base; 2986 PerlIOBuf base;
1931 NV next, every; 2987 NV next, every;
1932} PerlIOCede; 2988} PerlIOCede;
1933 2989
1934static IV 2990static IV ecb_cold
1935PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2991PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1936{ 2992{
1937 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2993 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1938 2994
1939 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2995 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1940 self->next = nvtime () + self->every; 2996 self->next = nvtime () + self->every;
1941 2997
1942 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2998 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1943} 2999}
1944 3000
1945static SV * 3001static SV * ecb_cold
1946PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3002PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1947{ 3003{
1948 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3004 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1949 3005
1950 return newSVnv (self->every); 3006 return newSVnv (self->every);
… …
1996 PerlIOBuf_get_cnt, 3052 PerlIOBuf_get_cnt,
1997 PerlIOBuf_set_ptrcnt, 3053 PerlIOBuf_set_ptrcnt,
1998}; 3054};
1999 3055
2000/*****************************************************************************/ 3056/*****************************************************************************/
3057/* Coro::Semaphore & Coro::Signal */
3058
3059static SV *
3060coro_waitarray_new (pTHX_ int count)
3061{
3062 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3063 AV *av = newAV ();
3064 SV **ary;
3065
3066 /* unfortunately, building manually saves memory */
3067 Newx (ary, 2, SV *);
3068 AvALLOC (av) = ary;
3069#if PERL_VERSION_ATLEAST (5,10,0)
3070 AvARRAY (av) = ary;
3071#else
3072 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3073 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3074 SvPVX ((SV *)av) = (char *)ary;
3075#endif
3076 AvMAX (av) = 1;
3077 AvFILLp (av) = 0;
3078 ary [0] = newSViv (count);
3079
3080 return newRV_noinc ((SV *)av);
3081}
3082
2001/* Coro::Semaphore */ 3083/* semaphore */
2002 3084
2003static void 3085static void
2004coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 3086coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2005{ 3087{
2006 SV *count_sv = AvARRAY (av)[0]; 3088 SV *count_sv = AvARRAY (av)[0];
… …
2018 AvARRAY (av)[0] = AvARRAY (av)[1]; 3100 AvARRAY (av)[0] = AvARRAY (av)[1];
2019 AvARRAY (av)[1] = count_sv; 3101 AvARRAY (av)[1] = count_sv;
2020 cb = av_shift (av); 3102 cb = av_shift (av);
2021 3103
2022 if (SvOBJECT (cb)) 3104 if (SvOBJECT (cb))
3105 {
2023 api_ready (aTHX_ cb); 3106 api_ready (aTHX_ cb);
2024 else 3107 --count;
2025 croak ("callbacks not yet supported"); 3108 }
3109 else if (SvTYPE (cb) == SVt_PVCV)
3110 {
3111 dSP;
3112 PUSHMARK (SP);
3113 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3114 PUTBACK;
3115 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3116 }
2026 3117
2027 SvREFCNT_dec (cb); 3118 SvREFCNT_dec_NN (cb);
2028
2029 --count;
2030 } 3119 }
2031} 3120}
2032 3121
2033static void 3122static void
2034coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3123coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2035{ 3124{
2036 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3125 /* call $sem->adjust (0) to possibly wake up some other waiters */
2037 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3126 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2038} 3127}
2039 3128
2040static int 3129static int
2041slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3130slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2042{ 3131{
2043 AV *av = (AV *)frame->data; 3132 AV *av = (AV *)frame->data;
2044 SV *count_sv = AvARRAY (av)[0]; 3133 SV *count_sv = AvARRAY (av)[0];
3134 SV *coro_hv = SvRV (coro_current);
2045 3135
3136 frame->destroy = 0;
3137
3138 /* if we are about to throw, don't actually acquire the lock, just throw */
3139 if (ecb_expect_false (CORO_THROW))
3140 {
3141 /* we still might be responsible for the semaphore, so wake up others */
3142 coro_semaphore_adjust (aTHX_ av, 0);
3143
3144 return 0;
3145 }
2046 if (SvIVX (count_sv) > 0) 3146 else if (SvIVX (count_sv) > 0)
2047 { 3147 {
2048 SvSTATE_current->on_destroy = 0; 3148 if (acquire)
2049 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3149 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3150 else
3151 coro_semaphore_adjust (aTHX_ av, 0);
3152
2050 return 0; 3153 return 0;
2051 } 3154 }
2052 else 3155 else
2053 { 3156 {
2054 int i; 3157 int i;
2055 /* if we were woken up but can't down, we look through the whole */ 3158 /* if we were woken up but can't down, we look through the whole */
2056 /* waiters list and only add us if we aren't in there already */ 3159 /* waiters list and only add us if we aren't in there already */
2057 /* this avoids some degenerate memory usage cases */ 3160 /* this avoids some degenerate memory usage cases */
2058 3161 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2059 for (i = 1; i <= AvFILLp (av); ++i)
2060 if (AvARRAY (av)[i] == SvRV (coro_current)) 3162 if (AvARRAY (av)[i] == coro_hv)
2061 return 1; 3163 return 1;
2062 3164
2063 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3165 av_push (av, SvREFCNT_inc (coro_hv));
2064 return 1; 3166 return 1;
2065 } 3167 }
2066} 3168}
2067 3169
2068static void 3170static int
3171slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3172{
3173 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3174}
3175
3176static int
3177slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3178{
3179 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3180}
3181
3182static void
2069slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3183slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2070{ 3184{
2071 AV *av = (AV *)SvRV (arg [0]); 3185 AV *av = (AV *)SvRV (arg [0]);
2072 3186
2073 if (SvIVX (AvARRAY (av)[0]) > 0) 3187 if (SvIVX (AvARRAY (av)[0]) > 0)
2074 { 3188 {
2075 frame->data = (void *)av; 3189 frame->data = (void *)av;
2076 frame->prepare = prepare_nop; 3190 frame->prepare = prepare_nop;
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 } 3191 }
2079 else 3192 else
2080 { 3193 {
2081 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3194 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2082 3195
2083 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3196 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2084 frame->prepare = prepare_schedule; 3197 frame->prepare = prepare_schedule;
2085
2086 /* to avoid race conditions when a woken-up coro gets terminated */ 3198 /* to avoid race conditions when a woken-up coro gets terminated */
2087 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3199 /* we arrange for a temporary on_destroy that calls adjust (0) */
2088 assert (!SvSTATE_current->on_destroy);//D
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3200 frame->destroy = coro_semaphore_destroy;
2090 } 3201 }
3202}
2091 3203
3204static void
3205slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3206{
3207 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2092 frame->check = slf_check_semaphore_down; 3208 frame->check = slf_check_semaphore_down;
2093
2094} 3209}
2095 3210
2096/*****************************************************************************/ 3211static void
2097/* gensub: simple closure generation utility */ 3212slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 3213{
2107 CV *cv = (CV *)newSV (0); 3214 if (items >= 2)
3215 {
3216 /* callback form */
3217 AV *av = (AV *)SvRV (arg [0]);
3218 SV *cb_cv = s_get_cv_croak (arg [1]);
2108 3219
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 3220 av_push (av, SvREFCNT_inc_NN (cb_cv));
2110 3221
2111 CvANON_on (cv); 3222 if (SvIVX (AvARRAY (av)[0]) > 0)
2112 CvISXSUB_on (cv); 3223 coro_semaphore_adjust (aTHX_ av, 0);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 3224
2116 return newRV_noinc ((SV *)cv); 3225 frame->prepare = prepare_nop;
3226 frame->check = slf_check_nop;
3227 }
3228 else
3229 {
3230 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3231 frame->check = slf_check_semaphore_wait;
3232 }
3233}
3234
3235/* signal */
3236
3237static void
3238coro_signal_wake (pTHX_ AV *av, int count)
3239{
3240 SvIVX (AvARRAY (av)[0]) = 0;
3241
3242 /* now signal count waiters */
3243 while (count > 0 && AvFILLp (av) > 0)
3244 {
3245 SV *cb;
3246
3247 /* swap first two elements so we can shift a waiter */
3248 cb = AvARRAY (av)[0];
3249 AvARRAY (av)[0] = AvARRAY (av)[1];
3250 AvARRAY (av)[1] = cb;
3251
3252 cb = av_shift (av);
3253
3254 if (SvTYPE (cb) == SVt_PVCV)
3255 {
3256 dSP;
3257 PUSHMARK (SP);
3258 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3259 PUTBACK;
3260 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3261 }
3262 else
3263 {
3264 api_ready (aTHX_ cb);
3265 sv_setiv (cb, 0); /* signal waiter */
3266 }
3267
3268 SvREFCNT_dec_NN (cb);
3269
3270 --count;
3271 }
3272}
3273
3274static int
3275slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3276{
3277 /* if we are about to throw, also stop waiting */
3278 return SvROK ((SV *)frame->data) && !CORO_THROW;
3279}
3280
3281static void
3282slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3283{
3284 AV *av = (AV *)SvRV (arg [0]);
3285
3286 if (items >= 2)
3287 {
3288 SV *cb_cv = s_get_cv_croak (arg [1]);
3289 av_push (av, SvREFCNT_inc_NN (cb_cv));
3290
3291 if (SvIVX (AvARRAY (av)[0]))
3292 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3293
3294 frame->prepare = prepare_nop;
3295 frame->check = slf_check_nop;
3296 }
3297 else if (SvIVX (AvARRAY (av)[0]))
3298 {
3299 SvIVX (AvARRAY (av)[0]) = 0;
3300 frame->prepare = prepare_nop;
3301 frame->check = slf_check_nop;
3302 }
3303 else
3304 {
3305 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3306
3307 av_push (av, waiter);
3308
3309 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3310 frame->prepare = prepare_schedule;
3311 frame->check = slf_check_signal_wait;
3312 }
2117} 3313}
2118 3314
2119/*****************************************************************************/ 3315/*****************************************************************************/
2120/* Coro::AIO */ 3316/* Coro::AIO */
2121 3317
… …
2132 3328
2133static void 3329static void
2134coro_aio_callback (pTHX_ CV *cv) 3330coro_aio_callback (pTHX_ CV *cv)
2135{ 3331{
2136 dXSARGS; 3332 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG; 3333 AV *state = (AV *)S_GENSUB_ARG;
2138 SV *coro = av_pop (state); 3334 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state)); 3335 SV *data_sv = newSV (sizeof (struct io_state));
2140 3336
2141 av_extend (state, items); 3337 av_extend (state, items - 1);
2142 3338
2143 sv_upgrade (data_sv, SVt_PV); 3339 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state)); 3340 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv); 3341 SvPOK_only (data_sv);
2146 3342
… …
2162 } 3358 }
2163 3359
2164 av_push (state, data_sv); 3360 av_push (state, data_sv);
2165 3361
2166 api_ready (aTHX_ coro); 3362 api_ready (aTHX_ coro);
2167 SvREFCNT_dec (coro); 3363 SvREFCNT_dec_NN (coro);
2168 SvREFCNT_dec ((AV *)state); 3364 SvREFCNT_dec_NN ((AV *)state);
2169} 3365}
2170 3366
2171static int 3367static int
2172slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3368slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173{ 3369{
2174 AV *state = (AV *)frame->data; 3370 AV *state = (AV *)frame->data;
2175 3371
3372 /* if we are about to throw, return early */
3373 /* this does not cancel the aio request, but at least */
3374 /* it quickly returns */
3375 if (CORO_THROW)
3376 return 0;
3377
2176 /* one element that is an RV? repeat! */ 3378 /* one element that is an RV? repeat! */
2177 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3379 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2178 return 1; 3380 return 1;
2179 3381
2180 /* restore status */ 3382 /* restore status */
2181 { 3383 {
2182 SV *data_sv = av_pop (state); 3384 SV *data_sv = av_pop (state);
… …
2185 errno = data->errorno; 3387 errno = data->errorno;
2186 PL_laststype = data->laststype; 3388 PL_laststype = data->laststype;
2187 PL_laststatval = data->laststatval; 3389 PL_laststatval = data->laststatval;
2188 PL_statcache = data->statcache; 3390 PL_statcache = data->statcache;
2189 3391
2190 SvREFCNT_dec (data_sv); 3392 SvREFCNT_dec_NN (data_sv);
2191 } 3393 }
2192 3394
2193 /* push result values */ 3395 /* push result values */
2194 { 3396 {
2195 dSP; 3397 dSP;
… …
2221 dSP; 3423 dSP;
2222 3424
2223 static SV *prio_cv; 3425 static SV *prio_cv;
2224 static SV *prio_sv; 3426 static SV *prio_sv;
2225 3427
2226 if (expect_false (!prio_cv)) 3428 if (ecb_expect_false (!prio_cv))
2227 { 3429 {
2228 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3430 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2229 prio_sv = newSViv (0); 3431 prio_sv = newSViv (0);
2230 } 3432 }
2231 3433
… …
2250 3452
2251 for (i = 0; i < items; ++i) 3453 for (i = 0; i < items; ++i)
2252 PUSHs (arg [i]); 3454 PUSHs (arg [i]);
2253 3455
2254 /* now push the callback closure */ 3456 /* now push the callback closure */
2255 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3457 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2256 3458
2257 /* now call the AIO function - we assume our request is uncancelable */ 3459 /* now call the AIO function - we assume our request is uncancelable */
2258 PUTBACK; 3460 PUTBACK;
2259 call_sv ((SV *)req, G_VOID | G_DISCARD); 3461 call_sv ((SV *)req, G_VOID | G_DISCARD);
2260 } 3462 }
2261 3463
2262 /* now that the requets is going, we loop toll we have a result */ 3464 /* now that the request is going, we loop till we have a result */
2263 frame->data = (void *)state; 3465 frame->data = (void *)state;
2264 frame->prepare = prepare_schedule; 3466 frame->prepare = prepare_schedule;
2265 frame->check = slf_check_aio_req; 3467 frame->check = slf_check_aio_req;
2266} 3468}
2267 3469
… …
2275 XSRETURN_EMPTY; 3477 XSRETURN_EMPTY;
2276} 3478}
2277 3479
2278/*****************************************************************************/ 3480/*****************************************************************************/
2279 3481
3482#if CORO_CLONE
3483# include "clone.c"
3484#endif
3485
3486/*****************************************************************************/
3487
3488static SV *
3489coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3490{
3491 SV *coro_sv;
3492 struct coro *coro;
3493 MAGIC *mg;
3494 HV *hv;
3495 SV *cb;
3496 int i;
3497
3498 if (argc > 0)
3499 {
3500 cb = s_get_cv_croak (argv [0]);
3501
3502 if (!is_coro)
3503 {
3504 if (CvISXSUB (cb))
3505 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3506
3507 if (!CvROOT (cb))
3508 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3509 }
3510 }
3511
3512 Newz (0, coro, 1, struct coro);
3513 coro->args = newAV ();
3514 coro->flags = CF_NEW;
3515
3516 if (coro_first) coro_first->prev = coro;
3517 coro->next = coro_first;
3518 coro_first = coro;
3519
3520 coro->hv = hv = newHV ();
3521 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3522 mg->mg_flags |= MGf_DUP;
3523 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3524
3525 if (argc > 0)
3526 {
3527 av_extend (coro->args, argc + is_coro - 1);
3528
3529 if (is_coro)
3530 {
3531 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3532 cb = (SV *)cv_coro_run;
3533 }
3534
3535 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3536
3537 for (i = 1; i < argc; i++)
3538 av_push (coro->args, newSVsv (argv [i]));
3539 }
3540
3541 return coro_sv;
3542}
3543
3544#ifndef __cplusplus
3545ecb_cold XS(boot_Coro__State);
3546#endif
3547
3548#if CORO_JIT
3549
3550static void ecb_noinline ecb_cold
3551pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3552{
3553 dSP;
3554 AV *av = newAV ();
3555
3556 av_store (av, 3, newSVuv (d));
3557 av_store (av, 2, newSVuv (c));
3558 av_store (av, 1, newSVuv (b));
3559 av_store (av, 0, newSVuv (a));
3560
3561 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3562
3563 PUTBACK;
3564}
3565
3566static void ecb_noinline ecb_cold
3567jit_init (pTHX)
3568{
3569 dSP;
3570 SV *load, *save;
3571 char *map_base;
3572 char *load_ptr, *save_ptr;
3573 STRLEN load_len, save_len, map_len;
3574 int count;
3575
3576 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3577
3578 PUSHMARK (SP);
3579 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3580 #include "state.h"
3581 count = call_pv ("Coro::State::_jit", G_ARRAY);
3582 SPAGAIN;
3583
3584 save = POPs; save_ptr = SvPVbyte (save, save_len);
3585 load = POPs; load_ptr = SvPVbyte (load, load_len);
3586
3587 map_len = load_len + save_len + 16;
3588
3589 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3590
3591 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3592
3593 load_perl_slots = (load_save_perl_slots_type)map_base;
3594 memcpy (map_base, load_ptr, load_len);
3595
3596 map_base += (load_len + 15) & ~15;
3597
3598 save_perl_slots = (load_save_perl_slots_type)map_base;
3599 memcpy (map_base, save_ptr, save_len);
3600
3601 /* we are good citizens and try to make the page read-only, so the evil evil */
3602 /* hackers might have it a bit more difficult */
3603 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3604
3605 PUTBACK;
3606 eval_pv ("undef &Coro::State::_jit", 1);
3607}
3608
3609#endif
3610
2280MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3611MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2281 3612
2282PROTOTYPES: DISABLE 3613PROTOTYPES: DISABLE
2283 3614
2284BOOT: 3615BOOT:
2285{ 3616{
3617#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3618#include "state.h"
2286#ifdef USE_ITHREADS 3619#ifdef USE_ITHREADS
2287# if CORO_PTHREAD 3620# if CORO_PTHREAD
2288 coro_thx = PERL_GET_CONTEXT; 3621 coro_thx = PERL_GET_CONTEXT;
2289# endif 3622# endif
2290#endif 3623#endif
2291 BOOT_PAGESIZE; 3624 /* perl defines these to check for existance first, but why it doesn't */
3625 /* just create them one at init time is not clear to me, except for */
3626 /* programs trying to delete them, but... */
3627 /* anyway, we declare this as invalid and make sure they are initialised here */
3628 DEFSV;
3629 ERRSV;
3630
3631 cctx_current = cctx_new_empty ();
2292 3632
2293 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3633 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2294 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3634 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2295 3635
2296 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3636 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2297 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3637 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2298 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3638 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2299 3639
2300 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2301 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3640 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2302 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3641 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2303 3642
2304 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3643 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
2305 3644
… …
2316 3655
2317 { 3656 {
2318 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3657 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319 3658
2320 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3659 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321 hv_store_ent (PL_custom_op_names, slf, 3660 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2322 newSVpv ("coro_slf", 0), 0);
2323 3661
2324 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3662 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325 hv_store_ent (PL_custom_op_descs, slf, 3663 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2326 newSVpv ("coro schedule like function", 0), 0);
2327 } 3664 }
2328 3665
2329 coroapi.ver = CORO_API_VERSION; 3666 coroapi.ver = CORO_API_VERSION;
2330 coroapi.rev = CORO_API_REVISION; 3667 coroapi.rev = CORO_API_REVISION;
2331 3668
… …
2336 coroapi.prepare_nop = prepare_nop; 3673 coroapi.prepare_nop = prepare_nop;
2337 coroapi.prepare_schedule = prepare_schedule; 3674 coroapi.prepare_schedule = prepare_schedule;
2338 coroapi.prepare_cede = prepare_cede; 3675 coroapi.prepare_cede = prepare_cede;
2339 coroapi.prepare_cede_notself = prepare_cede_notself; 3676 coroapi.prepare_cede_notself = prepare_cede_notself;
2340 3677
2341 { 3678 time_init (aTHX);
2342 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2343 3679
2344 if (!svp) croak ("Time::HiRes is required");
2345 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2346
2347 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2348 }
2349
2350 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3680 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3681#if CORO_JIT
3682 PUTBACK;
3683 jit_init (aTHX);
3684 SPAGAIN;
3685#endif
2351} 3686}
2352 3687
2353SV * 3688SV *
2354new (char *klass, ...) 3689new (SV *klass, ...)
3690 ALIAS:
3691 Coro::new = 1
2355 CODE: 3692 CODE:
2356{ 3693 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2357 struct coro *coro; 3694 OUTPUT:
2358 MAGIC *mg;
2359 HV *hv;
2360 int i;
2361
2362 Newz (0, coro, 1, struct coro);
2363 coro->args = newAV ();
2364 coro->flags = CF_NEW;
2365
2366 if (coro_first) coro_first->prev = coro;
2367 coro->next = coro_first;
2368 coro_first = coro;
2369
2370 coro->hv = hv = newHV ();
2371 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2372 mg->mg_flags |= MGf_DUP;
2373 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2374
2375 av_extend (coro->args, items - 1);
2376 for (i = 1; i < items; i++)
2377 av_push (coro->args, newSVsv (ST (i)));
2378}
2379 OUTPUT:
2380 RETVAL 3695 RETVAL
2381
2382void
2383_set_stacklevel (...)
2384 CODE:
2385 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2386 3696
2387void 3697void
2388transfer (...) 3698transfer (...)
2389 PROTOTYPE: $$ 3699 PROTOTYPE: $$
2390 CODE: 3700 CODE:
2391 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3701 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2392 3702
2393bool 3703SV *
2394_destroy (SV *coro_sv) 3704clone (Coro::State coro)
2395 CODE: 3705 CODE:
2396 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3706{
3707#if CORO_CLONE
3708 struct coro *ncoro = coro_clone (aTHX_ coro);
3709 MAGIC *mg;
3710 /* TODO: too much duplication */
3711 ncoro->hv = newHV ();
3712 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3713 mg->mg_flags |= MGf_DUP;
3714 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3715#else
3716 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3717#endif
3718}
2397 OUTPUT: 3719 OUTPUT:
2398 RETVAL 3720 RETVAL
2399
2400void
2401_exit (int code)
2402 PROTOTYPE: $
2403 CODE:
2404 _exit (code);
2405 3721
2406int 3722int
2407cctx_stacksize (int new_stacksize = 0) 3723cctx_stacksize (int new_stacksize = 0)
2408 PROTOTYPE: ;$ 3724 PROTOTYPE: ;$
2409 CODE: 3725 CODE:
… …
2445void 3761void
2446list () 3762list ()
2447 PROTOTYPE: 3763 PROTOTYPE:
2448 PPCODE: 3764 PPCODE:
2449{ 3765{
2450 struct coro *coro; 3766 struct coro *coro;
2451 for (coro = coro_first; coro; coro = coro->next) 3767 for (coro = coro_first; coro; coro = coro->next)
2452 if (coro->hv) 3768 if (coro->hv)
2453 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3769 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2454} 3770}
2455 3771
… …
2459 eval = 1 3775 eval = 1
2460 CODE: 3776 CODE:
2461{ 3777{
2462 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3778 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2463 { 3779 {
2464 struct coro temp; 3780 struct coro *current = SvSTATE_current;
3781 struct CoroSLF slf_save;
2465 3782
2466 if (!(coro->flags & CF_RUNNING)) 3783 if (current != coro)
2467 { 3784 {
2468 PUTBACK; 3785 PUTBACK;
2469 save_perl (aTHX_ &temp); 3786 save_perl (aTHX_ current);
2470 load_perl (aTHX_ coro); 3787 load_perl (aTHX_ coro);
3788 /* the coro is most likely in an active SLF call.
3789 * while not strictly required (the code we execute is
3790 * not allowed to call any SLF functions), it's cleaner
3791 * to reinitialise the slf_frame and restore it later.
3792 * This might one day allow us to actually do SLF calls
3793 * from code executed here.
3794 */
3795 slf_save = slf_frame;
3796 slf_frame.prepare = 0;
3797 SPAGAIN;
2471 } 3798 }
2472 3799
2473 {
2474 dSP;
2475 ENTER;
2476 SAVETMPS;
2477 PUTBACK;
2478 PUSHSTACK; 3800 PUSHSTACK;
3801
2479 PUSHMARK (SP); 3802 PUSHMARK (SP);
3803 PUTBACK;
2480 3804
2481 if (ix) 3805 if (ix)
2482 eval_sv (coderef, 0); 3806 eval_sv (coderef, 0);
2483 else 3807 else
2484 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3808 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2485 3809
2486 POPSTACK; 3810 POPSTACK;
2487 SPAGAIN; 3811 SPAGAIN;
2488 FREETMPS;
2489 LEAVE;
2490 PUTBACK;
2491 }
2492 3812
2493 if (!(coro->flags & CF_RUNNING)) 3813 if (current != coro)
2494 { 3814 {
3815 PUTBACK;
3816 slf_frame = slf_save;
2495 save_perl (aTHX_ coro); 3817 save_perl (aTHX_ coro);
2496 load_perl (aTHX_ &temp); 3818 load_perl (aTHX_ current);
2497 SPAGAIN; 3819 SPAGAIN;
2498 } 3820 }
2499 } 3821 }
2500} 3822}
2501 3823
… …
2504 PROTOTYPE: $ 3826 PROTOTYPE: $
2505 ALIAS: 3827 ALIAS:
2506 is_ready = CF_READY 3828 is_ready = CF_READY
2507 is_running = CF_RUNNING 3829 is_running = CF_RUNNING
2508 is_new = CF_NEW 3830 is_new = CF_NEW
2509 is_destroyed = CF_DESTROYED 3831 is_destroyed = CF_ZOMBIE
3832 is_zombie = CF_ZOMBIE
3833 is_suspended = CF_SUSPENDED
2510 CODE: 3834 CODE:
2511 RETVAL = boolSV (coro->flags & ix); 3835 RETVAL = boolSV (coro->flags & ix);
2512 OUTPUT: 3836 OUTPUT:
2513 RETVAL 3837 RETVAL
2514 3838
2515void 3839void
2516throw (Coro::State self, SV *throw = &PL_sv_undef) 3840throw (SV *self, SV *exception = &PL_sv_undef)
2517 PROTOTYPE: $;$ 3841 PROTOTYPE: $;$
2518 CODE: 3842 CODE:
2519{ 3843{
3844 struct coro *coro = SvSTATE (self);
2520 struct coro *current = SvSTATE_current; 3845 struct coro *current = SvSTATE_current;
2521 SV **throwp = self == current ? &coro_throw : &self->throw; 3846 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2522 SvREFCNT_dec (*throwp); 3847 SvREFCNT_dec (*exceptionp);
2523 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3848 SvGETMAGIC (exception);
3849 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3850
3851 api_ready (aTHX_ self);
2524} 3852}
2525 3853
2526void 3854void
2527api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3855api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2528 PROTOTYPE: $;$ 3856 PROTOTYPE: $;$
… …
2530 3858
2531SV * 3859SV *
2532has_cctx (Coro::State coro) 3860has_cctx (Coro::State coro)
2533 PROTOTYPE: $ 3861 PROTOTYPE: $
2534 CODE: 3862 CODE:
2535 RETVAL = boolSV (!!coro->cctx); 3863 /* maybe manage the running flag differently */
3864 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2536 OUTPUT: 3865 OUTPUT:
2537 RETVAL 3866 RETVAL
2538 3867
2539int 3868int
2540is_traced (Coro::State coro) 3869is_traced (Coro::State coro)
… …
2560 3889
2561void 3890void
2562force_cctx () 3891force_cctx ()
2563 PROTOTYPE: 3892 PROTOTYPE:
2564 CODE: 3893 CODE:
2565 SvSTATE_current->cctx->idle_sp = 0; 3894 cctx_current->idle_sp = 0;
2566 3895
2567void 3896void
2568swap_defsv (Coro::State self) 3897swap_defsv (Coro::State self)
2569 PROTOTYPE: $ 3898 PROTOTYPE: $
2570 ALIAS: 3899 ALIAS:
… …
2578 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3907 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2579 3908
2580 SV *tmp = *src; *src = *dst; *dst = tmp; 3909 SV *tmp = *src; *src = *dst; *dst = tmp;
2581 } 3910 }
2582 3911
3912void
3913cancel (Coro::State self)
3914 CODE:
3915 coro_state_destroy (aTHX_ self);
3916
3917SV *
3918enable_times (int enabled = enable_times)
3919 CODE:
3920{
3921 RETVAL = boolSV (enable_times);
3922
3923 if (enabled != enable_times)
3924 {
3925 enable_times = enabled;
3926
3927 coro_times_update ();
3928 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3929 }
3930}
3931 OUTPUT:
3932 RETVAL
3933
3934void
3935times (Coro::State self)
3936 PPCODE:
3937{
3938 struct coro *current = SvSTATE (coro_current);
3939
3940 if (ecb_expect_false (current == self))
3941 {
3942 coro_times_update ();
3943 coro_times_add (SvSTATE (coro_current));
3944 }
3945
3946 EXTEND (SP, 2);
3947 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3948 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3949
3950 if (ecb_expect_false (current == self))
3951 coro_times_sub (SvSTATE (coro_current));
3952}
3953
3954void
3955swap_sv (Coro::State coro, SV *sva, SV *svb)
3956 CODE:
3957{
3958 struct coro *current = SvSTATE_current;
3959 AV *swap_sv;
3960 int i;
3961
3962 sva = SvRV (sva);
3963 svb = SvRV (svb);
3964
3965 if (current == coro)
3966 SWAP_SVS_LEAVE (current);
3967
3968 if (!coro->swap_sv)
3969 coro->swap_sv = newAV ();
3970
3971 swap_sv = coro->swap_sv;
3972
3973 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
3974 {
3975 SV *a = AvARRAY (swap_sv)[i ];
3976 SV *b = AvARRAY (swap_sv)[i + 1];
3977
3978 if (a == sva && b == svb)
3979 {
3980 SvREFCNT_dec_NN (a);
3981 SvREFCNT_dec_NN (b);
3982
3983 for (; i <= AvFILLp (swap_sv) - 2; i++)
3984 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
3985
3986 AvFILLp (swap_sv) -= 2;
3987
3988 goto removed;
3989 }
3990 }
3991
3992 av_push (swap_sv, SvREFCNT_inc_NN (sva));
3993 av_push (swap_sv, SvREFCNT_inc_NN (svb));
3994
3995 removed:
3996
3997 if (current == coro)
3998 SWAP_SVS_ENTER (current);
3999}
4000
2583 4001
2584MODULE = Coro::State PACKAGE = Coro 4002MODULE = Coro::State PACKAGE = Coro
2585 4003
2586BOOT: 4004BOOT:
2587{ 4005{
2588 int i; 4006 if (SVt_LAST > 32)
4007 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2589 4008
2590 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2591 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4009 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2592 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4010 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2593 4011 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2594 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 4012 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2595 SvREADONLY_on (coro_current); 4013 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
4014 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
4015 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
4016 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
4017
4018 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
4019 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
4020 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
4021 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2596 4022
2597 coro_stash = gv_stashpv ("Coro", TRUE); 4023 coro_stash = gv_stashpv ("Coro", TRUE);
2598 4024
2599 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4025 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2600 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4026 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2601 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4027 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2602 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4028 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2603 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4029 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2604 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4030 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2605
2606 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2607 coro_ready[i] = newAV ();
2608 4031
2609 { 4032 {
2610 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4033 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2611 4034
2612 coroapi.schedule = api_schedule; 4035 coroapi.schedule = api_schedule;
4036 coroapi.schedule_to = api_schedule_to;
2613 coroapi.cede = api_cede; 4037 coroapi.cede = api_cede;
2614 coroapi.cede_notself = api_cede_notself; 4038 coroapi.cede_notself = api_cede_notself;
2615 coroapi.ready = api_ready; 4039 coroapi.ready = api_ready;
2616 coroapi.is_ready = api_is_ready; 4040 coroapi.is_ready = api_is_ready;
2617 coroapi.nready = coro_nready; 4041 coroapi.nready = coro_nready;
2618 coroapi.current = coro_current; 4042 coroapi.current = coro_current;
2619 4043
4044 coroapi.enterleave_hook = api_enterleave_hook;
4045 coroapi.enterleave_unhook = api_enterleave_unhook;
4046 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4047
2620 GCoroAPI = &coroapi; 4048 /*GCoroAPI = &coroapi;*/
2621 sv_setiv (sv, (IV)&coroapi); 4049 sv_setiv (sv, (IV)&coroapi);
2622 SvREADONLY_on (sv); 4050 SvREADONLY_on (sv);
2623 } 4051 }
2624} 4052}
4053
4054SV *
4055async (...)
4056 PROTOTYPE: &@
4057 CODE:
4058 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4059 api_ready (aTHX_ RETVAL);
4060 OUTPUT:
4061 RETVAL
4062
4063void
4064_destroy (Coro::State coro)
4065 CODE:
4066 /* used by the manager thread */
4067 coro_state_destroy (aTHX_ coro);
4068
4069void
4070on_destroy (Coro::State coro, SV *cb)
4071 CODE:
4072 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4073
4074void
4075join (...)
4076 CODE:
4077 CORO_EXECUTE_SLF_XS (slf_init_join);
4078
4079void
4080terminate (...)
4081 CODE:
4082 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4083
4084void
4085cancel (...)
4086 CODE:
4087 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4088
4089int
4090safe_cancel (Coro::State self, ...)
4091 C_ARGS: aTHX_ self, &ST (1), items - 1
2625 4092
2626void 4093void
2627schedule (...) 4094schedule (...)
2628 CODE: 4095 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4096 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2630 4097
2631void 4098void
4099schedule_to (...)
4100 CODE:
4101 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4102
4103void
4104cede_to (...)
4105 CODE:
4106 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
4107
4108void
2632cede (...) 4109cede (...)
2633 CODE: 4110 CODE:
2634 CORO_EXECUTE_SLF_XS (slf_init_cede); 4111 CORO_EXECUTE_SLF_XS (slf_init_cede);
2635 4112
2636void 4113void
… …
2640 4117
2641void 4118void
2642_set_current (SV *current) 4119_set_current (SV *current)
2643 PROTOTYPE: $ 4120 PROTOTYPE: $
2644 CODE: 4121 CODE:
2645 SvREFCNT_dec (SvRV (coro_current)); 4122 SvREFCNT_dec_NN (SvRV (coro_current));
2646 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4123 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2647 4124
2648void 4125void
2649_set_readyhook (SV *hook) 4126_set_readyhook (SV *hook)
2650 PROTOTYPE: $ 4127 PROTOTYPE: $
2651 CODE: 4128 CODE:
2652 SvREFCNT_dec (coro_readyhook); 4129 SvREFCNT_dec (coro_readyhook);
4130 SvGETMAGIC (hook);
4131 if (SvOK (hook))
4132 {
2653 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4133 coro_readyhook = newSVsv (hook);
4134 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4135 }
4136 else
4137 {
4138 coro_readyhook = 0;
4139 CORO_READYHOOK = 0;
4140 }
2654 4141
2655int 4142int
2656prio (Coro::State coro, int newprio = 0) 4143prio (Coro::State coro, int newprio = 0)
2657 PROTOTYPE: $;$ 4144 PROTOTYPE: $;$
2658 ALIAS: 4145 ALIAS:
… …
2664 if (items > 1) 4151 if (items > 1)
2665 { 4152 {
2666 if (ix) 4153 if (ix)
2667 newprio = coro->prio - newprio; 4154 newprio = coro->prio - newprio;
2668 4155
2669 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4156 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2670 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4157 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2671 4158
2672 coro->prio = newprio; 4159 coro->prio = newprio;
2673 } 4160 }
2674} 4161}
2675 OUTPUT: 4162 OUTPUT:
… …
2689 CODE: 4176 CODE:
2690 RETVAL = coro_nready; 4177 RETVAL = coro_nready;
2691 OUTPUT: 4178 OUTPUT:
2692 RETVAL 4179 RETVAL
2693 4180
2694# for async_pool speedup
2695void 4181void
2696_pool_1 (SV *cb) 4182suspend (Coro::State self)
4183 PROTOTYPE: $
2697 CODE: 4184 CODE:
2698{ 4185 self->flags |= CF_SUSPENDED;
2699 HV *hv = (HV *)SvRV (coro_current);
2700 struct coro *coro = SvSTATE_hv ((SV *)hv);
2701 AV *defav = GvAV (PL_defgv);
2702 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2703 AV *invoke_av;
2704 int i, len;
2705 4186
2706 if (!invoke) 4187void
4188resume (Coro::State self)
4189 PROTOTYPE: $
4190 CODE:
4191 self->flags &= ~CF_SUSPENDED;
4192
4193void
4194_pool_handler (...)
4195 CODE:
4196 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4197
4198void
4199async_pool (SV *cv, ...)
4200 PROTOTYPE: &@
4201 PPCODE:
4202{
4203 HV *hv = (HV *)av_pop (av_async_pool);
4204 AV *av = newAV ();
4205 SV *cb = ST (0);
4206 int i;
4207
4208 av_extend (av, items - 2);
4209 for (i = 1; i < items; ++i)
4210 av_push (av, SvREFCNT_inc_NN (ST (i)));
4211
4212 if ((SV *)hv == &PL_sv_undef)
2707 { 4213 {
2708 SV *old = PL_diehook; 4214 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2709 PL_diehook = 0; 4215 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2710 SvREFCNT_dec (old); 4216 SvREFCNT_dec_NN (sv);
2711 croak ("\3async_pool terminate\2\n");
2712 } 4217 }
2713 4218
2714 SvREFCNT_dec (coro->saved_deffh);
2715 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2716
2717 hv_store (hv, "desc", sizeof ("desc") - 1,
2718 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2719
2720 invoke_av = (AV *)SvRV (invoke);
2721 len = av_len (invoke_av);
2722
2723 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2724
2725 if (len > 0)
2726 { 4219 {
2727 av_fill (defav, len - 1); 4220 struct coro *coro = SvSTATE_hv (hv);
2728 for (i = 0; i < len; ++i) 4221
2729 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4222 assert (!coro->invoke_cb);
4223 assert (!coro->invoke_av);
4224 coro->invoke_cb = SvREFCNT_inc (cb);
4225 coro->invoke_av = av;
2730 } 4226 }
4227
4228 api_ready (aTHX_ (SV *)hv);
4229
4230 if (GIMME_V != G_VOID)
4231 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4232 else
4233 SvREFCNT_dec_NN (hv);
2731} 4234}
4235
4236SV *
4237rouse_cb ()
4238 PROTOTYPE:
4239 CODE:
4240 RETVAL = coro_new_rouse_cb (aTHX);
4241 OUTPUT:
4242 RETVAL
2732 4243
2733void 4244void
2734_pool_2 (SV *cb) 4245rouse_wait (...)
4246 PROTOTYPE: ;$
4247 PPCODE:
4248 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4249
4250void
4251on_enter (SV *block)
4252 ALIAS:
4253 on_leave = 1
4254 PROTOTYPE: &
2735 CODE: 4255 CODE:
2736{ 4256{
2737 HV *hv = (HV *)SvRV (coro_current);
2738 struct coro *coro = SvSTATE_hv ((SV *)hv); 4257 struct coro *coro = SvSTATE_current;
4258 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2739 4259
2740 sv_setsv (cb, &PL_sv_undef); 4260 block = s_get_cv_croak (block);
2741 4261
2742 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4262 if (!*avp)
2743 coro->saved_deffh = 0; 4263 *avp = newAV ();
2744 4264
2745 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4265 av_push (*avp, SvREFCNT_inc (block));
2746 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2747 {
2748 SV *old = PL_diehook;
2749 PL_diehook = 0;
2750 SvREFCNT_dec (old);
2751 croak ("\3async_pool terminate\2\n");
2752 }
2753 4266
2754 av_clear (GvAV (PL_defgv)); 4267 if (!ix)
2755 hv_store (hv, "desc", sizeof ("desc") - 1, 4268 on_enterleave_call (aTHX_ block);
2756 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2757 4269
2758 coro->prio = 0; 4270 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2759 4271 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2760 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4272 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2761 api_trace (aTHX_ coro_current, 0);
2762
2763 av_push (av_async_pool, newSVsv (coro_current));
2764} 4273}
2765 4274
2766 4275
2767MODULE = Coro::State PACKAGE = PerlIO::cede 4276MODULE = Coro::State PACKAGE = PerlIO::cede
2768 4277
… …
2771 4280
2772 4281
2773MODULE = Coro::State PACKAGE = Coro::Semaphore 4282MODULE = Coro::State PACKAGE = Coro::Semaphore
2774 4283
2775SV * 4284SV *
2776new (SV *klass, SV *count_ = 0) 4285new (SV *klass, SV *count = 0)
2777 CODE: 4286 CODE:
2778{ 4287{
2779 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4288 int semcnt = 1;
2780 AV *av = newAV ();
2781 SV **ary;
2782 4289
2783 /* unfortunately, building manually saves memory */ 4290 if (count)
2784 Newx (ary, 2, SV *); 4291 {
2785 AvALLOC (av) = ary; 4292 SvGETMAGIC (count);
2786 AvARRAY (av) = ary;
2787 AvMAX (av) = 1;
2788 AvFILLp (av) = 0;
2789 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2790 4293
2791 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4294 if (SvOK (count))
4295 semcnt = SvIV (count);
4296 }
4297
4298 RETVAL = sv_bless (
4299 coro_waitarray_new (aTHX_ semcnt),
4300 GvSTASH (CvGV (cv))
4301 );
2792} 4302}
4303 OUTPUT:
4304 RETVAL
4305
4306# helper for Coro::Channel and others
4307SV *
4308_alloc (int count)
4309 CODE:
4310 RETVAL = coro_waitarray_new (aTHX_ count);
2793 OUTPUT: 4311 OUTPUT:
2794 RETVAL 4312 RETVAL
2795 4313
2796SV * 4314SV *
2797count (SV *self) 4315count (SV *self)
… …
2799 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4317 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2800 OUTPUT: 4318 OUTPUT:
2801 RETVAL 4319 RETVAL
2802 4320
2803void 4321void
2804up (SV *self, int adjust = 1) 4322up (SV *self)
2805 ALIAS:
2806 adjust = 1
2807 CODE: 4323 CODE:
2808 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4324 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
2809 4325
2810void 4326void
2811down (SV *self) 4327adjust (SV *self, int adjust)
4328 CODE:
4329 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4330
4331void
4332down (...)
2812 CODE: 4333 CODE:
2813 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4334 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4335
4336void
4337wait (...)
4338 CODE:
4339 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2814 4340
2815void 4341void
2816try (SV *self) 4342try (SV *self)
2817 PPCODE: 4343 PPCODE:
2818{ 4344{
… …
2830 XSRETURN_NO; 4356 XSRETURN_NO;
2831} 4357}
2832 4358
2833void 4359void
2834waiters (SV *self) 4360waiters (SV *self)
2835 CODE: 4361 PPCODE:
2836{ 4362{
2837 AV *av = (AV *)SvRV (self); 4363 AV *av = (AV *)SvRV (self);
4364 int wcount = AvFILLp (av) + 1 - 1;
2838 4365
2839 if (GIMME_V == G_SCALAR) 4366 if (GIMME_V == G_SCALAR)
2840 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4367 XPUSHs (sv_2mortal (newSViv (wcount)));
2841 else 4368 else
2842 { 4369 {
2843 int i; 4370 int i;
2844 EXTEND (SP, AvFILLp (av) + 1 - 1); 4371 EXTEND (SP, wcount);
2845 for (i = 1; i <= AvFILLp (av); ++i) 4372 for (i = 1; i <= wcount; ++i)
2846 PUSHs (newSVsv (AvARRAY (av)[i])); 4373 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2847 } 4374 }
2848} 4375}
4376
4377MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4378
4379void
4380_may_delete (SV *sem, int count, unsigned int extra_refs)
4381 PPCODE:
4382{
4383 AV *av = (AV *)SvRV (sem);
4384
4385 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4386 && AvFILLp (av) == 0 /* no waiters, just count */
4387 && SvIV (AvARRAY (av)[0]) == count)
4388 XSRETURN_YES;
4389
4390 XSRETURN_NO;
4391}
4392
4393MODULE = Coro::State PACKAGE = Coro::Signal
4394
4395SV *
4396new (SV *klass)
4397 CODE:
4398 RETVAL = sv_bless (
4399 coro_waitarray_new (aTHX_ 0),
4400 GvSTASH (CvGV (cv))
4401 );
4402 OUTPUT:
4403 RETVAL
4404
4405void
4406wait (...)
4407 CODE:
4408 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4409
4410void
4411broadcast (SV *self)
4412 CODE:
4413{
4414 AV *av = (AV *)SvRV (self);
4415 coro_signal_wake (aTHX_ av, AvFILLp (av));
4416}
4417
4418void
4419send (SV *self)
4420 CODE:
4421{
4422 AV *av = (AV *)SvRV (self);
4423
4424 if (AvFILLp (av))
4425 coro_signal_wake (aTHX_ av, 1);
4426 else
4427 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4428}
4429
4430IV
4431awaited (SV *self)
4432 CODE:
4433 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4434 OUTPUT:
4435 RETVAL
2849 4436
2850 4437
2851MODULE = Coro::State PACKAGE = Coro::AnyEvent 4438MODULE = Coro::State PACKAGE = Coro::AnyEvent
2852 4439
2853BOOT: 4440BOOT:
… …
2855 4442
2856void 4443void
2857_schedule (...) 4444_schedule (...)
2858 CODE: 4445 CODE:
2859{ 4446{
2860 static int incede; 4447 static int incede;
2861 4448
2862 api_cede_notself (aTHX); 4449 api_cede_notself (aTHX);
2863 4450
2864 ++incede; 4451 ++incede;
2865 while (coro_nready >= incede && api_cede (aTHX)) 4452 while (coro_nready >= incede && api_cede (aTHX))
… …
2868 sv_setsv (sv_activity, &PL_sv_undef); 4455 sv_setsv (sv_activity, &PL_sv_undef);
2869 if (coro_nready >= incede) 4456 if (coro_nready >= incede)
2870 { 4457 {
2871 PUSHMARK (SP); 4458 PUSHMARK (SP);
2872 PUTBACK; 4459 PUTBACK;
2873 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4460 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2874 SPAGAIN;
2875 } 4461 }
2876 4462
2877 --incede; 4463 --incede;
2878} 4464}
2879 4465
… …
2882 4468
2883void 4469void
2884_register (char *target, char *proto, SV *req) 4470_register (char *target, char *proto, SV *req)
2885 CODE: 4471 CODE:
2886{ 4472{
2887 HV *st; 4473 SV *req_cv = s_get_cv_croak (req);
2888 GV *gvp;
2889 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2890 /* newXSproto doesn't return the CV on 5.8 */ 4474 /* newXSproto doesn't return the CV on 5.8 */
2891 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4475 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2892 sv_setpv ((SV *)slf_cv, proto); 4476 sv_setpv ((SV *)slf_cv, proto);
2893 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4477 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2894} 4478}
2895 4479
4480MODULE = Coro::State PACKAGE = Coro::Select
4481
4482void
4483patch_pp_sselect ()
4484 CODE:
4485 if (!coro_old_pp_sselect)
4486 {
4487 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4488 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4489 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4490 }
4491
4492void
4493unpatch_pp_sselect ()
4494 CODE:
4495 if (coro_old_pp_sselect)
4496 {
4497 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4498 coro_old_pp_sselect = 0;
4499 }
4500
4501MODULE = Coro::State PACKAGE = Coro::Util
4502
4503void
4504_exit (int code)
4505 CODE:
4506 _exit (code);
4507
4508NV
4509time ()
4510 CODE:
4511 RETVAL = nvtime (aTHX);
4512 OUTPUT:
4513 RETVAL
4514
4515NV
4516gettimeofday ()
4517 PPCODE:
4518{
4519 UV tv [2];
4520 u2time (aTHX_ tv);
4521 EXTEND (SP, 2);
4522 PUSHs (sv_2mortal (newSVuv (tv [0])));
4523 PUSHs (sv_2mortal (newSVuv (tv [1])));
4524}
4525

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