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Comparing Coro/Coro/State.xs (file contents):
Revision 1.321 by root, Sat Nov 22 02:09:54 2008 UTC vs.
Revision 1.454 by root, Tue Jul 7 00:38:03 2015 UTC

1#define CORO_CLONE 1 //D 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 */
2 5
3#include "libcoro/coro.c" 6#include "libcoro/coro.c"
4 7
5#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
6#define PERL_EXT 9#define PERL_EXT
… …
8#include "EXTERN.h" 11#include "EXTERN.h"
9#include "perl.h" 12#include "perl.h"
10#include "XSUB.h" 13#include "XSUB.h"
11#include "perliol.h" 14#include "perliol.h"
12 15
13#include "patchlevel.h" 16#include "schmorp.h"
14 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
15#include <stdio.h> 23#include <stdio.h>
16#include <errno.h> 24#include <errno.h>
17#include <assert.h> 25#include <assert.h>
18 26
19#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
20# undef setjmp 70# undef setjmp
21# undef longjmp 71# undef longjmp
22# undef _exit 72# undef _exit
23# define setjmp _setjmp /* deep magic */ 73# define setjmp _setjmp /* deep magic */
24#else 74#else
25# include <inttypes.h> /* most portable stdint.h */ 75# include <inttypes.h> /* most portable stdint.h */
26#endif 76#endif
27 77
28#ifdef HAVE_MMAP
29# include <unistd.h>
30# include <sys/mman.h>
31# ifndef MAP_ANONYMOUS
32# ifdef MAP_ANON
33# define MAP_ANONYMOUS MAP_ANON
34# else
35# undef HAVE_MMAP
36# endif
37# endif
38# include <limits.h>
39# ifndef PAGESIZE
40# define PAGESIZE pagesize
41# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
42static long pagesize;
43# else
44# define BOOT_PAGESIZE (void)0
45# endif
46#else
47# define PAGESIZE 0
48# define BOOT_PAGESIZE (void)0
49#endif
50
51#if CORO_USE_VALGRIND
52# include <valgrind/valgrind.h>
53#endif
54
55/* the maximum number of idle cctx that will be pooled */ 78/* the maximum number of idle cctx that will be pooled */
56static int cctx_max_idle = 4; 79static int cctx_max_idle = 4;
57 80
58#define PERL_VERSION_ATLEAST(a,b,c) \ 81#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
59 (PERL_REVISION > (a) \ 82# define HAS_SCOPESTACK_NAME 1
60 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \
62 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
63
64#if !PERL_VERSION_ATLEAST (5,6,0)
65# ifndef PL_ppaddr
66# define PL_ppaddr ppaddr
67# endif
68# ifndef call_sv
69# define call_sv perl_call_sv
70# endif
71# ifndef get_sv
72# define get_sv perl_get_sv
73# endif
74# ifndef get_cv
75# define get_cv perl_get_cv
76# endif
77# ifndef IS_PADGV
78# define IS_PADGV(v) 0
79# endif
80# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0
82# endif
83#endif
84
85/* 5.11 */
86#ifndef CxHASARGS
87# define CxHASARGS(cx) (cx)->blk_sub.hasargs
88#endif
89
90/* 5.10.0 */
91#ifndef SvREFCNT_inc_NN
92# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
93#endif
94
95/* 5.8.8 */
96#ifndef GV_NOTQUAL
97# define GV_NOTQUAL 0
98#endif
99#ifndef newSV
100# define newSV(l) NEWSV(0,l)
101#endif
102#ifndef CvISXSUB_on
103# define CvISXSUB_on(cv) (void)cv
104#endif
105#ifndef CvISXSUB
106# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
107#endif
108#ifndef Newx
109# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
110#endif
111
112/* 5.8.7 */
113#ifndef SvRV_set
114# define SvRV_set(s,v) SvRV(s) = (v)
115#endif
116
117#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
118# undef CORO_STACKGUARD
119#endif
120
121#ifndef CORO_STACKGUARD
122# define CORO_STACKGUARD 0
123#endif 83#endif
124 84
125/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
126#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
127# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
… …
135#else 95#else
136# define dSTACKLEVEL volatile void *stacklevel 96# define dSTACKLEVEL volatile void *stacklevel
137# define STACKLEVEL ((void *)&stacklevel) 97# define STACKLEVEL ((void *)&stacklevel)
138#endif 98#endif
139 99
140#define IN_DESTRUCT (PL_main_cv == Nullcv) 100#define IN_DESTRUCT PL_dirty
141
142#if __GNUC__ >= 3
143# define attribute(x) __attribute__(x)
144# define expect(expr,value) __builtin_expect ((expr),(value))
145# define INLINE static inline
146#else
147# define attribute(x)
148# define expect(expr,value) (expr)
149# define INLINE static
150#endif
151
152#define expect_false(expr) expect ((expr) != 0, 0)
153#define expect_true(expr) expect ((expr) != 0, 1)
154
155#define NOINLINE attribute ((noinline))
156 101
157#include "CoroAPI.h" 102#include "CoroAPI.h"
158#define GCoroAPI (&coroapi) /* very sneaky */ 103#define GCoroAPI (&coroapi) /* very sneaky */
159 104
160#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
161# if CORO_PTHREAD 106# if CORO_PTHREAD
162static void *coro_thx; 107static void *coro_thx;
163# endif 108# endif
164#endif 109#endif
165 110
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
166static 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]);
167 123
168/* we hijack an hopefully unused CV flag for our purposes */ 124/* we hijack an hopefully unused CV flag for our purposes */
169#define CVf_SLF 0x4000 125#define CVf_SLF 0x4000
170static OP *pp_slf (pTHX); 126static OP *pp_slf (pTHX);
127static void slf_destroy (pTHX_ struct coro *coro);
171 128
172static U32 cctx_gen; 129static U32 cctx_gen;
173static size_t cctx_stacksize = CORO_STACKSIZE; 130static size_t cctx_stacksize = CORO_STACKSIZE;
174static struct CoroAPI coroapi; 131static struct CoroAPI coroapi;
175static AV *main_mainstack; /* used to differentiate between $main and others */ 132static AV *main_mainstack; /* used to differentiate between $main and others */
… …
177static HV *coro_state_stash, *coro_stash; 134static HV *coro_state_stash, *coro_stash;
178static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 135static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
179 136
180static AV *av_destroy; /* destruction queue */ 137static AV *av_destroy; /* destruction queue */
181static SV *sv_manager; /* the manager coro */ 138static SV *sv_manager; /* the manager coro */
139static SV *sv_idle; /* $Coro::idle */
182 140
183static GV *irsgv; /* $/ */ 141static GV *irsgv; /* $/ */
184static GV *stdoutgv; /* *STDOUT */ 142static GV *stdoutgv; /* *STDOUT */
185static SV *rv_diehook; 143static SV *rv_diehook;
186static SV *rv_warnhook; 144static SV *rv_warnhook;
… …
191static SV *sv_pool_size; 149static SV *sv_pool_size;
192static SV *sv_async_pool_idle; /* description string */ 150static SV *sv_async_pool_idle; /* description string */
193static AV *av_async_pool; /* idle pool */ 151static AV *av_async_pool; /* idle pool */
194static SV *sv_Coro; /* class string */ 152static SV *sv_Coro; /* class string */
195static CV *cv_pool_handler; 153static CV *cv_pool_handler;
196static CV *cv_coro_state_new;
197 154
198/* Coro::AnyEvent */ 155/* Coro::AnyEvent */
199static SV *sv_activity; 156static SV *sv_activity;
200 157
158/* enable processtime/realtime profiling */
159static char enable_times;
160typedef U32 coro_ts[2];
161static coro_ts time_real, time_cpu;
162static char times_valid;
163
201static struct coro_cctx *cctx_first; 164static struct coro_cctx *cctx_first;
202static int cctx_count, cctx_idle; 165static int cctx_count, cctx_idle;
203 166
204enum { 167enum
168{
205 CC_MAPPED = 0x01, 169 CC_MAPPED = 0x01,
206 CC_NOREUSE = 0x02, /* throw this away after tracing */ 170 CC_NOREUSE = 0x02, /* throw this away after tracing */
207 CC_TRACE = 0x04, 171 CC_TRACE = 0x04,
208 CC_TRACE_SUB = 0x08, /* trace sub calls */ 172 CC_TRACE_SUB = 0x08, /* trace sub calls */
209 CC_TRACE_LINE = 0x10, /* trace each statement */ 173 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
214typedef struct coro_cctx 178typedef struct coro_cctx
215{ 179{
216 struct coro_cctx *next; 180 struct coro_cctx *next;
217 181
218 /* the stack */ 182 /* the stack */
219 void *sptr; 183 struct coro_stack stack;
220 size_t ssize;
221 184
222 /* cpu state */ 185 /* cpu state */
223 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 186 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
187#ifndef NDEBUG
224 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 188 JMPENV *idle_te; /* same as idle_sp, but for top_env */
189#endif
225 JMPENV *top_env; 190 JMPENV *top_env;
226 coro_context cctx; 191 coro_context cctx;
227 192
228 U32 gen; 193 U32 gen;
229#if CORO_USE_VALGRIND 194#if CORO_USE_VALGRIND
230 int valgrind_id; 195 int valgrind_id;
231#endif 196#endif
232 unsigned char flags; 197 unsigned char flags;
233} coro_cctx; 198} coro_cctx;
234 199
200static coro_cctx *cctx_current; /* the currently running cctx */
201
202/*****************************************************************************/
203
204static MGVTBL coro_state_vtbl;
205
235enum { 206enum
207{
236 CF_RUNNING = 0x0001, /* coroutine is running */ 208 CF_RUNNING = 0x0001, /* coroutine is running */
237 CF_READY = 0x0002, /* coroutine is ready */ 209 CF_READY = 0x0002, /* coroutine is ready */
238 CF_NEW = 0x0004, /* has never been switched to */ 210 CF_NEW = 0x0004, /* has never been switched to */
239 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 211 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
212 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
213 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
240}; 214};
241 215
242/* the structure where most of the perl state is stored, overlaid on the cxstack */ 216/* the structure where most of the perl state is stored, overlaid on the cxstack */
243typedef struct 217typedef struct
244{ 218{
245 SV *defsv;
246 AV *defav;
247 SV *errsv;
248 SV *irsgv;
249#define VAR(name,type) type name; 219 #define VARx(name,expr,type) type name;
250# include "state.h" 220 #include "state.h"
251#undef VAR
252} perl_slots; 221} perl_slots;
253 222
223/* how many context stack entries do we need for perl_slots */
254#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 224#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
255 225
256/* this is a structure representing a perl-level coroutine */ 226/* this is a structure representing a perl-level coroutine */
257struct coro { 227struct coro
228{
258 /* the C coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
259 coro_cctx *cctx; 230 coro_cctx *cctx;
231
232 /* ready queue */
233 struct coro *next_ready;
260 234
261 /* state data */ 235 /* state data */
262 struct CoroSLF slf_frame; /* saved slf frame */ 236 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 237 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
265 239
266 CV *startcv; /* the CV to execute */ 240 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 242 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 243 HV *hv; /* the perl hash associated with this coro, if any */
271 void (*on_destroy)(pTHX_ struct coro *coro);
272 244
273 /* statistics */ 245 /* statistics */
274 int usecount; /* number of transfers to this coro */ 246 int usecount; /* number of transfers to this coro */
275 247
276 /* coro process data */ 248 /* coro process data */
277 int prio; 249 int prio;
278 SV *except; /* exception to be thrown */ 250 SV *except; /* exception to be thrown */
279 SV *rouse_cb; 251 SV *rouse_cb; /* last rouse callback */
252 AV *on_destroy; /* callbacks or coros to notify on destroy */
253 AV *status; /* the exit status list */
280 254
281 /* async_pool */ 255 /* async_pool */
282 SV *saved_deffh; 256 SV *saved_deffh;
283 SV *invoke_cb; 257 SV *invoke_cb;
284 AV *invoke_av; 258 AV *invoke_av;
285 259
260 /* on_enter/on_leave */
261 AV *on_enter; AV *on_enter_xs;
262 AV *on_leave; AV *on_leave_xs;
263
264 /* swap_sv */
265 AV *swap_sv;
266
267 /* times */
268 coro_ts t_cpu, t_real;
269
286 /* linked list */ 270 /* linked list */
287 struct coro *next, *prev; 271 struct coro *next, *prev;
288}; 272};
289 273
290typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
291typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
292 276
293/* the following variables are effectively part of the perl context */ 277/* the following variables are effectively part of the perl context */
294/* and get copied between struct coro and these variables */ 278/* and get copied between struct coro and these variables */
295/* the mainr easonw e don't support windows process emulation */ 279/* the main reason we don't support windows process emulation */
296static struct CoroSLF slf_frame; /* the current slf frame */ 280static struct CoroSLF slf_frame; /* the current slf frame */
297 281
298/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
299 283
300#define PRIO_MAX 3 284#define CORO_PRIO_MAX 3
301#define PRIO_HIGH 1 285#define CORO_PRIO_HIGH 1
302#define PRIO_NORMAL 0 286#define CORO_PRIO_NORMAL 0
303#define PRIO_LOW -1 287#define CORO_PRIO_LOW -1
304#define PRIO_IDLE -3 288#define CORO_PRIO_IDLE -3
305#define PRIO_MIN -4 289#define CORO_PRIO_MIN -4
306 290
307/* for Coro.pm */ 291/* for Coro.pm */
308static SV *coro_current; 292static SV *coro_current;
309static SV *coro_readyhook; 293static SV *coro_readyhook;
310static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 294static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
311static CV *cv_coro_run, *cv_coro_terminate; 295static CV *cv_coro_run;
312static struct coro *coro_first; 296static struct coro *coro_first;
313#define coro_nready coroapi.nready 297#define coro_nready coroapi.nready
314 298
299/** JIT *********************************************************************/
300
301#if CORO_JIT
302 /* APPLE doesn't have mmap though */
303 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
304 #ifndef CORO_JIT_TYPE
305 #if ECB_AMD64 && CORO_JIT_UNIXY
306 #define CORO_JIT_TYPE "amd64-unix"
307 #elif __i386 && CORO_JIT_UNIXY
308 #define CORO_JIT_TYPE "x86-unix"
309 #endif
310 #endif
311#endif
312
313#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
314 #undef CORO_JIT
315#endif
316
317#if CORO_JIT
318 typedef void (*load_save_perl_slots_type)(perl_slots *);
319 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
320#endif
321
322/** Coro::Select ************************************************************/
323
324static OP *(*coro_old_pp_sselect) (pTHX);
325static SV *coro_select_select;
326
327/* horrible hack, but if it works... */
328static OP *
329coro_pp_sselect (pTHX)
330{
331 dSP;
332 PUSHMARK (SP - 4); /* fake argument list */
333 XPUSHs (coro_select_select);
334 PUTBACK;
335
336 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
337 PL_op->op_flags |= OPf_STACKED;
338 PL_op->op_private = 0;
339 return PL_ppaddr [OP_ENTERSUB](aTHX);
340}
341
342/** time stuff **************************************************************/
343
344#ifdef HAS_GETTIMEOFDAY
345
346ecb_inline void
347coro_u2time (pTHX_ UV ret[2])
348{
349 struct timeval tv;
350 gettimeofday (&tv, 0);
351
352 ret [0] = tv.tv_sec;
353 ret [1] = tv.tv_usec;
354}
355
356ecb_inline double
357coro_nvtime (void)
358{
359 struct timeval tv;
360 gettimeofday (&tv, 0);
361
362 return tv.tv_sec + tv.tv_usec * 1e-6;
363}
364
365ecb_inline void
366time_init (pTHX)
367{
368 nvtime = coro_nvtime;
369 u2time = coro_u2time;
370}
371
372#else
373
374ecb_inline void
375time_init (pTHX)
376{
377 SV **svp;
378
379 require_pv ("Time/HiRes.pm");
380
381 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
382
383 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
384 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
385
386 nvtime = INT2PTR (double (*)(), SvIV (*svp));
387
388 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
389 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
390}
391
392#endif
393
315/** lowlevel stuff **********************************************************/ 394/** lowlevel stuff **********************************************************/
316 395
317static SV * 396static SV * ecb_noinline
318coro_get_sv (pTHX_ const char *name, int create) 397coro_get_sv (pTHX_ const char *name, int create)
319{ 398{
320#if PERL_VERSION_ATLEAST (5,10,0) 399#if PERL_VERSION_ATLEAST (5,10,0)
321 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 400 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
322 get_sv (name, create); 401 get_sv (name, create);
323#endif 402#endif
324 return get_sv (name, create); 403 return get_sv (name, create);
325} 404}
326 405
327static AV * 406static AV * ecb_noinline
328coro_get_av (pTHX_ const char *name, int create) 407coro_get_av (pTHX_ const char *name, int create)
329{ 408{
330#if PERL_VERSION_ATLEAST (5,10,0) 409#if PERL_VERSION_ATLEAST (5,10,0)
331 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 410 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
332 get_av (name, create); 411 get_av (name, create);
333#endif 412#endif
334 return get_av (name, create); 413 return get_av (name, create);
335} 414}
336 415
337static HV * 416static HV * ecb_noinline
338coro_get_hv (pTHX_ const char *name, int create) 417coro_get_hv (pTHX_ const char *name, int create)
339{ 418{
340#if PERL_VERSION_ATLEAST (5,10,0) 419#if PERL_VERSION_ATLEAST (5,10,0)
341 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 420 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
342 get_hv (name, create); 421 get_hv (name, create);
343#endif 422#endif
344 return get_hv (name, create); 423 return get_hv (name, create);
345} 424}
346 425
347/* may croak */ 426ecb_inline void
348INLINE CV * 427coro_times_update (void)
349coro_sv_2cv (pTHX_ SV *sv)
350{ 428{
351 HV *st; 429#ifdef coro_clock_gettime
352 GV *gvp; 430 struct timespec ts;
353 return sv_2cv (sv, &st, &gvp, 0);
354}
355 431
356static AV * 432 ts.tv_sec = ts.tv_nsec = 0;
433 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
434 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
435
436 ts.tv_sec = ts.tv_nsec = 0;
437 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
438 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
439#else
440 dTHX;
441 UV tv[2];
442
443 u2time (aTHX_ tv);
444 time_real [0] = tv [0];
445 time_real [1] = tv [1] * 1000;
446#endif
447}
448
449ecb_inline void
450coro_times_add (struct coro *c)
451{
452 c->t_real [1] += time_real [1];
453 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
454 c->t_real [0] += time_real [0];
455
456 c->t_cpu [1] += time_cpu [1];
457 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
458 c->t_cpu [0] += time_cpu [0];
459}
460
461ecb_inline void
462coro_times_sub (struct coro *c)
463{
464 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
465 c->t_real [1] -= time_real [1];
466 c->t_real [0] -= time_real [0];
467
468 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
469 c->t_cpu [1] -= time_cpu [1];
470 c->t_cpu [0] -= time_cpu [0];
471}
472
473/*****************************************************************************/
474/* magic glue */
475
476#define CORO_MAGIC_type_cv 26
477#define CORO_MAGIC_type_state PERL_MAGIC_ext
478
479#define CORO_MAGIC_NN(sv, type) \
480 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
481 ? SvMAGIC (sv) \
482 : mg_find (sv, type))
483
484#define CORO_MAGIC(sv, type) \
485 (ecb_expect_true (SvMAGIC (sv)) \
486 ? CORO_MAGIC_NN (sv, type) \
487 : 0)
488
489#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
490#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
491
492ecb_inline MAGIC *
493SvSTATEhv_p (pTHX_ SV *coro)
494{
495 MAGIC *mg;
496
497 if (ecb_expect_true (
498 SvTYPE (coro) == SVt_PVHV
499 && (mg = CORO_MAGIC_state (coro))
500 && mg->mg_virtual == &coro_state_vtbl
501 ))
502 return mg;
503
504 return 0;
505}
506
507ecb_inline struct coro *
508SvSTATE_ (pTHX_ SV *coro_sv)
509{
510 MAGIC *mg;
511
512 if (SvROK (coro_sv))
513 coro_sv = SvRV (coro_sv);
514
515 mg = SvSTATEhv_p (aTHX_ coro_sv);
516 if (!mg)
517 croak ("Coro::State object required");
518
519 return (struct coro *)mg->mg_ptr;
520}
521
522#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
523
524/* faster than SvSTATE, but expects a coroutine hv */
525#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
526#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
527
528/*****************************************************************************/
529/* padlist management and caching */
530
531ecb_inline PADLIST *
357coro_derive_padlist (pTHX_ CV *cv) 532coro_derive_padlist (pTHX_ CV *cv)
358{ 533{
359 AV *padlist = CvPADLIST (cv); 534 PADLIST *padlist = CvPADLIST (cv);
360 AV *newpadlist, *newpad; 535 PADLIST *newpadlist;
536 PADNAMELIST *padnames;
537 PAD *newpad;
538 PADOFFSET off = PadlistMAX (padlist) + 1;
361 539
362 newpadlist = newAV (); 540#if NEWPADAPI
541
542 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
543 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
544 while (!PadlistARRAY (padlist)[off - 1])
545 --off;
546
547 Perl_pad_push (aTHX_ padlist, off);
548
549 newpad = PadlistARRAY (padlist)[off];
550 PadlistARRAY (padlist)[off] = 0;
551
552#else
553
554#if PERL_VERSION_ATLEAST (5,10,0)
555 Perl_pad_push (aTHX_ padlist, off);
556#else
557 Perl_pad_push (aTHX_ padlist, off, 1);
558#endif
559
560 newpad = PadlistARRAY (padlist)[off];
561 PadlistMAX (padlist) = off - 1;
562
563#endif
564
565 newPADLIST (newpadlist);
566#if !PERL_VERSION_ATLEAST(5,15,3)
567 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
363 AvREAL_off (newpadlist); 568 AvREAL_off (newpadlist);
364#if PERL_VERSION_ATLEAST (5,10,0)
365 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
366#else
367 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
368#endif 569#endif
369 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
370 --AvFILLp (padlist);
371 570
372 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 571 /* Already extended to 2 elements by newPADLIST. */
373 av_store (newpadlist, 1, (SV *)newpad); 572 PadlistMAX (newpadlist) = 1;
573
574 padnames = PadlistNAMES (padlist);
575 ++PadnamelistREFCNT (padnames);
576 PadlistNAMES (newpadlist) = padnames;
577
578 PadlistARRAY (newpadlist)[1] = newpad;
374 579
375 return newpadlist; 580 return newpadlist;
376} 581}
377 582
378static void 583ecb_inline void
379free_padlist (pTHX_ AV *padlist) 584free_padlist (pTHX_ PADLIST *padlist)
380{ 585{
381 /* may be during global destruction */ 586 /* may be during global destruction */
382 if (SvREFCNT (padlist)) 587 if (!IN_DESTRUCT)
383 { 588 {
384 I32 i = AvFILLp (padlist); 589 I32 i = PadlistMAX (padlist);
385 while (i >= 0) 590
591 while (i > 0) /* special-case index 0 */
386 { 592 {
387 SV **svp = av_fetch (padlist, i--, FALSE); 593 /* we try to be extra-careful here */
594 PAD *pad = PadlistARRAY (padlist)[i--];
595
388 if (svp) 596 if (pad)
389 { 597 {
390 SV *sv; 598 I32 j = PadMAX (pad);
391 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 599
600 while (j >= 0)
392 SvREFCNT_dec (sv); 601 SvREFCNT_dec (PadARRAY (pad)[j--]);
393 602
603 PadMAX (pad) = -1;
394 SvREFCNT_dec (*svp); 604 SvREFCNT_dec (pad);
395 } 605 }
396 } 606 }
397 607
608 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
609
610#if NEWPADAPI
611 Safefree (PadlistARRAY (padlist));
612 Safefree (padlist);
613#else
614 AvFILLp (padlist) = -1;
615 AvREAL_off (padlist);
398 SvREFCNT_dec ((SV*)padlist); 616 SvREFCNT_dec ((SV*)padlist);
617#endif
399 } 618 }
400} 619}
401 620
402static int 621static int
403coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 622coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
404{ 623{
405 AV *padlist; 624 PADLIST *padlist;
406 AV *av = (AV *)mg->mg_obj; 625 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
626 size_t len = *(size_t *)mg->mg_ptr;
407 627
408 /* casting is fun. */ 628 /* perl manages to free our internal AV and _then_ call us */
409 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 629 if (IN_DESTRUCT)
630 return 0;
631
632 while (len--)
410 free_padlist (aTHX_ padlist); 633 free_padlist (aTHX_ padlists[len]);
411
412 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
413 634
414 return 0; 635 return 0;
415} 636}
416
417#define CORO_MAGIC_type_cv 26
418#define CORO_MAGIC_type_state PERL_MAGIC_ext
419 637
420static MGVTBL coro_cv_vtbl = { 638static MGVTBL coro_cv_vtbl = {
421 0, 0, 0, 0, 639 0, 0, 0, 0,
422 coro_cv_free 640 coro_cv_free
423}; 641};
424 642
425#define CORO_MAGIC_NN(sv, type) \
426 (expect_true (SvMAGIC (sv)->mg_type == type) \
427 ? SvMAGIC (sv) \
428 : mg_find (sv, type))
429
430#define CORO_MAGIC(sv, type) \
431 (expect_true (SvMAGIC (sv)) \
432 ? CORO_MAGIC_NN (sv, type) \
433 : 0)
434
435#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
436#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
437
438INLINE struct coro *
439SvSTATE_ (pTHX_ SV *coro)
440{
441 HV *stash;
442 MAGIC *mg;
443
444 if (SvROK (coro))
445 coro = SvRV (coro);
446
447 if (expect_false (SvTYPE (coro) != SVt_PVHV))
448 croak ("Coro::State object required");
449
450 stash = SvSTASH (coro);
451 if (expect_false (stash != coro_stash && stash != coro_state_stash))
452 {
453 /* very slow, but rare, check */
454 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
455 croak ("Coro::State object required");
456 }
457
458 mg = CORO_MAGIC_state (coro);
459 return (struct coro *)mg->mg_ptr;
460}
461
462#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
463
464/* faster than SvSTATE, but expects a coroutine hv */
465#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
466#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
467
468/* the next two functions merely cache the padlists */ 643/* the next two functions merely cache the padlists */
469static void 644ecb_inline void
470get_padlist (pTHX_ CV *cv) 645get_padlist (pTHX_ CV *cv)
471{ 646{
472 MAGIC *mg = CORO_MAGIC_cv (cv); 647 MAGIC *mg = CORO_MAGIC_cv (cv);
473 AV *av; 648 size_t *lenp;
474 649
475 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 650 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
476 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 651 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
477 else 652 else
478 { 653 {
479#if CORO_PREFER_PERL_FUNCTIONS 654#if CORO_PREFER_PERL_FUNCTIONS
480 /* this is probably cleaner? but also slower! */ 655 /* this is probably cleaner? but also slower! */
481 /* in practise, it seems to be less stable */ 656 /* in practise, it seems to be less stable */
… …
487 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); 662 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
488#endif 663#endif
489 } 664 }
490} 665}
491 666
492static void 667ecb_inline void
493put_padlist (pTHX_ CV *cv) 668put_padlist (pTHX_ CV *cv)
494{ 669{
495 MAGIC *mg = CORO_MAGIC_cv (cv); 670 MAGIC *mg = CORO_MAGIC_cv (cv);
496 AV *av;
497 671
498 if (expect_false (!mg)) 672 if (ecb_expect_false (!mg))
673 {
499 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 674 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
675 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
676 mg->mg_len = 1; /* so mg_free frees mg_ptr */
677 }
678 else
679 Renew (mg->mg_ptr,
680 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
681 char);
500 682
501 av = (AV *)mg->mg_obj; 683 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
502
503 if (expect_false (AvFILLp (av) >= AvMAX (av)))
504 av_extend (av, AvMAX (av) + 1);
505
506 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
507} 684}
508 685
509/** load & save, init *******************************************************/ 686/** load & save, init *******************************************************/
687
688ecb_inline void
689swap_sv (SV *a, SV *b)
690{
691 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
692 SV tmp;
693
694 /* swap sv_any */
695 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
696
697 /* swap sv_flags */
698 SvFLAGS (&tmp) = SvFLAGS (a);
699 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
700 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
701
702#if PERL_VERSION_ATLEAST (5,10,0)
703 /* perl 5.10 and later complicates this _quite_ a bit, but it also
704 * is much faster, so no quarrels here. alternatively, we could
705 * sv_upgrade to avoid this.
706 */
707 {
708 /* swap sv_u */
709 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
710
711 /* if SvANY points to the head, we need to adjust the pointers,
712 * as the pointer for a still points to b, and maybe vice versa.
713 */
714 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
715 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
716 svany_in_head_set |= 1 << SVt_NV;
717 #endif
718
719 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
720
721 if (svany_in_head (SvTYPE (a)))
722 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
723
724 if (svany_in_head (SvTYPE (b)))
725 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
726 }
727#endif
728}
729
730/* swap sv heads, at least logically */
731static void
732swap_svs (pTHX_ Coro__State c)
733{
734 int i;
735
736 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
737 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
738}
739
740#define SWAP_SVS(coro) \
741 if (ecb_expect_false ((coro)->swap_sv)) \
742 swap_svs (aTHX_ (coro))
743
744static void
745on_enterleave_call (pTHX_ SV *cb);
510 746
511static void 747static void
512load_perl (pTHX_ Coro__State c) 748load_perl (pTHX_ Coro__State c)
513{ 749{
514 perl_slots *slot = c->slot; 750 perl_slots *slot = c->slot;
515 c->slot = 0; 751 c->slot = 0;
516 752
517 PL_mainstack = c->mainstack; 753 PL_mainstack = c->mainstack;
518 754
519 GvSV (PL_defgv) = slot->defsv; 755#if CORO_JIT
520 GvAV (PL_defgv) = slot->defav; 756 load_perl_slots (slot);
521 GvSV (PL_errgv) = slot->errsv; 757#else
522 GvSV (irsgv) = slot->irsgv;
523
524 #define VAR(name,type) PL_ ## name = slot->name; 758 #define VARx(name,expr,type) expr = slot->name;
525 # include "state.h" 759 #include "state.h"
526 #undef VAR 760#endif
527 761
528 { 762 {
529 dSP; 763 dSP;
530 764
531 CV *cv; 765 CV *cv;
532 766
533 /* now do the ugly restore mess */ 767 /* now do the ugly restore mess */
534 while (expect_true (cv = (CV *)POPs)) 768 while (ecb_expect_true (cv = (CV *)POPs))
535 { 769 {
536 put_padlist (aTHX_ cv); /* mark this padlist as available */ 770 put_padlist (aTHX_ cv); /* mark this padlist as available */
537 CvDEPTH (cv) = PTR2IV (POPs); 771 CvDEPTH (cv) = PTR2IV (POPs);
538 CvPADLIST (cv) = (AV *)POPs; 772 CvPADLIST (cv) = (PADLIST *)POPs;
539 } 773 }
540 774
541 PUTBACK; 775 PUTBACK;
542 } 776 }
543 777
544 slf_frame = c->slf_frame; 778 slf_frame = c->slf_frame;
545 CORO_THROW = c->except; 779 CORO_THROW = c->except;
780
781 if (ecb_expect_false (enable_times))
782 {
783 if (ecb_expect_false (!times_valid))
784 coro_times_update ();
785
786 coro_times_sub (c);
787 }
788
789 if (ecb_expect_false (c->on_enter))
790 {
791 int i;
792
793 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
794 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
795 }
796
797 if (ecb_expect_false (c->on_enter_xs))
798 {
799 int i;
800
801 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
802 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
803 }
804
805 SWAP_SVS (c);
546} 806}
547 807
548static void 808static void
549save_perl (pTHX_ Coro__State c) 809save_perl (pTHX_ Coro__State c)
550{ 810{
811 SWAP_SVS (c);
812
813 if (ecb_expect_false (c->on_leave_xs))
814 {
815 int i;
816
817 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
818 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
819 }
820
821 if (ecb_expect_false (c->on_leave))
822 {
823 int i;
824
825 for (i = AvFILLp (c->on_leave); i >= 0; --i)
826 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
827 }
828
829 times_valid = 0;
830
831 if (ecb_expect_false (enable_times))
832 {
833 coro_times_update (); times_valid = 1;
834 coro_times_add (c);
835 }
836
551 c->except = CORO_THROW; 837 c->except = CORO_THROW;
552 c->slf_frame = slf_frame; 838 c->slf_frame = slf_frame;
553 839
554 { 840 {
555 dSP; 841 dSP;
… …
564 850
565 XPUSHs (Nullsv); 851 XPUSHs (Nullsv);
566 /* this loop was inspired by pp_caller */ 852 /* this loop was inspired by pp_caller */
567 for (;;) 853 for (;;)
568 { 854 {
569 while (expect_true (cxix >= 0)) 855 while (ecb_expect_true (cxix >= 0))
570 { 856 {
571 PERL_CONTEXT *cx = &ccstk[cxix--]; 857 PERL_CONTEXT *cx = &ccstk[cxix--];
572 858
573 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 859 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
574 { 860 {
575 CV *cv = cx->blk_sub.cv; 861 CV *cv = cx->blk_sub.cv;
576 862
577 if (expect_true (CvDEPTH (cv))) 863 if (ecb_expect_true (CvDEPTH (cv)))
578 { 864 {
579 EXTEND (SP, 3); 865 EXTEND (SP, 3);
580 PUSHs ((SV *)CvPADLIST (cv)); 866 PUSHs ((SV *)CvPADLIST (cv));
581 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 867 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
582 PUSHs ((SV *)cv); 868 PUSHs ((SV *)cv);
… …
585 get_padlist (aTHX_ cv); 871 get_padlist (aTHX_ cv);
586 } 872 }
587 } 873 }
588 } 874 }
589 875
590 if (expect_true (top_si->si_type == PERLSI_MAIN)) 876 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
591 break; 877 break;
592 878
593 top_si = top_si->si_prev; 879 top_si = top_si->si_prev;
594 ccstk = top_si->si_cxstack; 880 ccstk = top_si->si_cxstack;
595 cxix = top_si->si_cxix; 881 cxix = top_si->si_cxix;
… …
597 883
598 PUTBACK; 884 PUTBACK;
599 } 885 }
600 886
601 /* allocate some space on the context stack for our purposes */ 887 /* allocate some space on the context stack for our purposes */
602 /* we manually unroll here, as usually 2 slots is enough */ 888 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
603 if (SLOT_COUNT >= 1) CXINC;
604 if (SLOT_COUNT >= 2) CXINC;
605 if (SLOT_COUNT >= 3) CXINC;
606 { 889 {
607 int i; 890 unsigned int i;
891
608 for (i = 3; i < SLOT_COUNT; ++i) 892 for (i = 0; i < SLOT_COUNT; ++i)
609 CXINC; 893 CXINC;
610 } 894
611 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 895 cxstack_ix -= SLOT_COUNT; /* undo allocation */
896 }
612 897
613 c->mainstack = PL_mainstack; 898 c->mainstack = PL_mainstack;
614 899
615 { 900 {
616 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 901 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
617 902
618 slot->defav = GvAV (PL_defgv); 903#if CORO_JIT
619 slot->defsv = DEFSV; 904 save_perl_slots (slot);
620 slot->errsv = ERRSV; 905#else
621 slot->irsgv = GvSV (irsgv);
622
623 #define VAR(name,type) slot->name = PL_ ## name; 906 #define VARx(name,expr,type) slot->name = expr;
624 # include "state.h" 907 #include "state.h"
625 #undef VAR 908#endif
626 } 909 }
627} 910}
628 911
629/* 912/*
630 * allocate various perl stacks. This is almost an exact copy 913 * allocate various perl stacks. This is almost an exact copy
… …
636# define coro_init_stacks(thx) init_stacks () 919# define coro_init_stacks(thx) init_stacks ()
637#else 920#else
638static void 921static void
639coro_init_stacks (pTHX) 922coro_init_stacks (pTHX)
640{ 923{
641 PL_curstackinfo = new_stackinfo(32, 8); 924 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
642 PL_curstackinfo->si_type = PERLSI_MAIN; 925 PL_curstackinfo->si_type = PERLSI_MAIN;
643 PL_curstack = PL_curstackinfo->si_stack; 926 PL_curstack = PL_curstackinfo->si_stack;
644 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 927 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
645 928
646 PL_stack_base = AvARRAY(PL_curstack); 929 PL_stack_base = AvARRAY(PL_curstack);
… …
661#endif 944#endif
662 945
663 New(54,PL_scopestack,8,I32); 946 New(54,PL_scopestack,8,I32);
664 PL_scopestack_ix = 0; 947 PL_scopestack_ix = 0;
665 PL_scopestack_max = 8; 948 PL_scopestack_max = 8;
949#if HAS_SCOPESTACK_NAME
950 New(54,PL_scopestack_name,8,const char*);
951#endif
666 952
667 New(54,PL_savestack,24,ANY); 953 New(54,PL_savestack,24,ANY);
668 PL_savestack_ix = 0; 954 PL_savestack_ix = 0;
669 PL_savestack_max = 24; 955 PL_savestack_max = 24;
670 956
… …
698 } 984 }
699 985
700 Safefree (PL_tmps_stack); 986 Safefree (PL_tmps_stack);
701 Safefree (PL_markstack); 987 Safefree (PL_markstack);
702 Safefree (PL_scopestack); 988 Safefree (PL_scopestack);
989#if HAS_SCOPESTACK_NAME
990 Safefree (PL_scopestack_name);
991#endif
703 Safefree (PL_savestack); 992 Safefree (PL_savestack);
704#if !PERL_VERSION_ATLEAST (5,10,0) 993#if !PERL_VERSION_ATLEAST (5,10,0)
705 Safefree (PL_retstack); 994 Safefree (PL_retstack);
706#endif 995#endif
707} 996}
… …
753#endif 1042#endif
754 1043
755/* 1044/*
756 * This overrides the default magic get method of %SIG elements. 1045 * This overrides the default magic get method of %SIG elements.
757 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1046 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
758 * and instead of tryign to save and restore the hash elements, we just provide 1047 * and instead of trying to save and restore the hash elements (extremely slow),
759 * readback here. 1048 * we just provide our own readback here.
760 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
761 * not expecting this to actually change the hook. This is a potential problem
762 * when a schedule happens then, but we ignore this.
763 */ 1049 */
764static int 1050static int ecb_cold
765coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1051coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
766{ 1052{
767 const char *s = MgPV_nolen_const (mg); 1053 const char *s = MgPV_nolen_const (mg);
768 1054
769 if (*s == '_') 1055 if (*s == '_')
770 { 1056 {
771 SV **svp = 0; 1057 SV **svp = 0;
772 1058
773 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1059 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
774 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1060 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
775 1061
776 if (svp) 1062 if (svp)
777 { 1063 {
778 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1064 SV *ssv;
1065
1066 if (!*svp)
1067 ssv = &PL_sv_undef;
1068 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1069 ssv = sv_2mortal (newRV_inc (*svp));
1070 else
1071 ssv = *svp;
1072
1073 sv_setsv (sv, ssv);
779 return 0; 1074 return 0;
780 } 1075 }
781 } 1076 }
782 1077
783 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1078 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
784} 1079}
785 1080
786static int 1081static int ecb_cold
787coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1082coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
788{ 1083{
789 const char *s = MgPV_nolen_const (mg); 1084 const char *s = MgPV_nolen_const (mg);
790 1085
791 if (*s == '_') 1086 if (*s == '_')
… …
805 } 1100 }
806 1101
807 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1102 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
808} 1103}
809 1104
810static int 1105static int ecb_cold
811coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1106coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
812{ 1107{
813 const char *s = MgPV_nolen_const (mg); 1108 const char *s = MgPV_nolen_const (mg);
814 1109
815 if (*s == '_') 1110 if (*s == '_')
… …
820 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1115 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
821 1116
822 if (svp) 1117 if (svp)
823 { 1118 {
824 SV *old = *svp; 1119 SV *old = *svp;
825 *svp = newSVsv (sv); 1120 *svp = SvOK (sv) ? newSVsv (sv) : 0;
826 SvREFCNT_dec (old); 1121 SvREFCNT_dec (old);
827 return 0; 1122 return 0;
828 } 1123 }
829 } 1124 }
830 1125
… …
848slf_check_repeat (pTHX_ struct CoroSLF *frame) 1143slf_check_repeat (pTHX_ struct CoroSLF *frame)
849{ 1144{
850 return 1; 1145 return 1;
851} 1146}
852 1147
853static UNOP coro_setup_op; 1148static UNOP init_perl_op;
854 1149
855static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1150ecb_noinline static void /* noinline to keep it out of the transfer fast path */
856coro_setup (pTHX_ struct coro *coro) 1151init_perl (pTHX_ struct coro *coro)
857{ 1152{
858 /* 1153 /*
859 * emulate part of the perl startup here. 1154 * emulate part of the perl startup here.
860 */ 1155 */
861 coro_init_stacks (aTHX); 1156 coro_init_stacks (aTHX);
862 1157
863 PL_runops = RUNOPS_DEFAULT; 1158 PL_runops = RUNOPS_DEFAULT;
864 PL_curcop = &PL_compiling; 1159 PL_curcop = &PL_compiling;
865 PL_in_eval = EVAL_NULL; 1160 PL_in_eval = EVAL_NULL;
866 PL_comppad = 0; 1161 PL_comppad = 0;
1162 PL_comppad_name = 0;
1163 PL_comppad_name_fill = 0;
1164 PL_comppad_name_floor = 0;
867 PL_curpm = 0; 1165 PL_curpm = 0;
868 PL_curpad = 0; 1166 PL_curpad = 0;
869 PL_localizing = 0; 1167 PL_localizing = 0;
870 PL_dirty = 0;
871 PL_restartop = 0; 1168 PL_restartop = 0;
872#if PERL_VERSION_ATLEAST (5,10,0) 1169#if PERL_VERSION_ATLEAST (5,10,0)
873 PL_parser = 0; 1170 PL_parser = 0;
874#endif 1171#endif
1172 PL_hints = 0;
875 1173
876 /* recreate the die/warn hooks */ 1174 /* recreate the die/warn hooks */
877 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1175 PL_diehook = SvREFCNT_inc (rv_diehook);
878 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1176 PL_warnhook = SvREFCNT_inc (rv_warnhook);
879 1177
880 GvSV (PL_defgv) = newSV (0); 1178 GvSV (PL_defgv) = newSV (0);
881 GvAV (PL_defgv) = coro->args; coro->args = 0; 1179 GvAV (PL_defgv) = coro->args; coro->args = 0;
882 GvSV (PL_errgv) = newSV (0); 1180 GvSV (PL_errgv) = newSV (0);
883 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1181 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1182 GvHV (PL_hintgv) = newHV ();
1183#if PERL_VERSION_ATLEAST (5,10,0)
1184 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1185#endif
884 PL_rs = newSVsv (GvSV (irsgv)); 1186 PL_rs = newSVsv (GvSV (irsgv));
885 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1187 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
886 1188
887 { 1189 {
888 dSP; 1190 dSP;
… …
903 /* this newly created coroutine might be run on an existing cctx which most 1205 /* this newly created coroutine might be run on an existing cctx which most
904 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1206 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
905 */ 1207 */
906 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1208 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
907 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1209 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1210 slf_frame.destroy = 0;
908 1211
909 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1212 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
910 coro_setup_op.op_next = PL_op; 1213 init_perl_op.op_next = PL_op;
911 coro_setup_op.op_type = OP_ENTERSUB; 1214 init_perl_op.op_type = OP_ENTERSUB;
912 coro_setup_op.op_ppaddr = pp_slf; 1215 init_perl_op.op_ppaddr = pp_slf;
913 /* no flags etc. required, as an init function won't be called */ 1216 /* no flags etc. required, as an init function won't be called */
914 1217
915 PL_op = (OP *)&coro_setup_op; 1218 PL_op = (OP *)&init_perl_op;
916 1219
917 /* copy throw, in case it was set before coro_setup */ 1220 /* copy throw, in case it was set before init_perl */
918 CORO_THROW = coro->except; 1221 CORO_THROW = coro->except;
919}
920 1222
1223 SWAP_SVS (coro);
1224
1225 if (ecb_expect_false (enable_times))
1226 {
1227 coro_times_update ();
1228 coro_times_sub (coro);
1229 }
1230}
1231
921static void 1232static void
922coro_destruct (pTHX_ struct coro *coro) 1233coro_unwind_stacks (pTHX)
923{ 1234{
924 if (!IN_DESTRUCT) 1235 if (!IN_DESTRUCT)
925 { 1236 {
926 /* restore all saved variables and stuff */ 1237 /* restore all saved variables and stuff */
927 LEAVE_SCOPE (0); 1238 LEAVE_SCOPE (0);
… …
935 POPSTACK_TO (PL_mainstack); 1246 POPSTACK_TO (PL_mainstack);
936 1247
937 /* unwind main stack */ 1248 /* unwind main stack */
938 dounwind (-1); 1249 dounwind (-1);
939 } 1250 }
1251}
940 1252
941 SvREFCNT_dec (GvSV (PL_defgv)); 1253static void
942 SvREFCNT_dec (GvAV (PL_defgv)); 1254destroy_perl (pTHX_ struct coro *coro)
943 SvREFCNT_dec (GvSV (PL_errgv)); 1255{
944 SvREFCNT_dec (PL_defoutgv); 1256 SV *svf [9];
945 SvREFCNT_dec (PL_rs);
946 SvREFCNT_dec (GvSV (irsgv));
947 1257
948 SvREFCNT_dec (PL_diehook);
949 SvREFCNT_dec (PL_warnhook);
950 1258 {
1259 SV *old_current = SvRV (coro_current);
1260 struct coro *current = SvSTATE (old_current);
1261
1262 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1263
1264 save_perl (aTHX_ current);
1265
1266 /* this will cause transfer_check to croak on block*/
1267 SvRV_set (coro_current, (SV *)coro->hv);
1268
1269 load_perl (aTHX_ coro);
1270
1271 coro_unwind_stacks (aTHX);
1272
1273 /* restore swapped sv's */
1274 SWAP_SVS (coro);
1275
1276 coro_destruct_stacks (aTHX);
1277
1278 /* now save some sv's to be free'd later */
1279 svf [0] = GvSV (PL_defgv);
1280 svf [1] = (SV *)GvAV (PL_defgv);
1281 svf [2] = GvSV (PL_errgv);
1282 svf [3] = (SV *)PL_defoutgv;
1283 svf [4] = PL_rs;
1284 svf [5] = GvSV (irsgv);
1285 svf [6] = (SV *)GvHV (PL_hintgv);
1286 svf [7] = PL_diehook;
1287 svf [8] = PL_warnhook;
1288 assert (9 == sizeof (svf) / sizeof (*svf));
1289
1290 SvRV_set (coro_current, old_current);
1291
1292 load_perl (aTHX_ current);
1293 }
1294
1295 {
1296 unsigned int i;
1297
1298 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1299 SvREFCNT_dec (svf [i]);
1300
951 SvREFCNT_dec (coro->saved_deffh); 1301 SvREFCNT_dec (coro->saved_deffh);
952 SvREFCNT_dec (coro->rouse_cb); 1302 SvREFCNT_dec (coro->rouse_cb);
953 SvREFCNT_dec (coro->invoke_cb); 1303 SvREFCNT_dec (coro->invoke_cb);
954 SvREFCNT_dec (coro->invoke_av); 1304 SvREFCNT_dec (coro->invoke_av);
955 1305 SvREFCNT_dec (coro->on_enter_xs);
956 coro_destruct_stacks (aTHX); 1306 SvREFCNT_dec (coro->on_leave_xs);
1307 }
957} 1308}
958 1309
959INLINE void 1310ecb_inline void
960free_coro_mortal (pTHX) 1311free_coro_mortal (pTHX)
961{ 1312{
962 if (expect_true (coro_mortal)) 1313 if (ecb_expect_true (coro_mortal))
963 { 1314 {
964 SvREFCNT_dec (coro_mortal); 1315 SvREFCNT_dec ((SV *)coro_mortal);
965 coro_mortal = 0; 1316 coro_mortal = 0;
966 } 1317 }
967} 1318}
968 1319
969static int 1320static int
970runops_trace (pTHX) 1321runops_trace (pTHX)
971{ 1322{
972 COP *oldcop = 0; 1323 COP *oldcop = 0;
973 int oldcxix = -2; 1324 int oldcxix = -2;
974 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
975 coro_cctx *cctx = coro->cctx;
976 1325
977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1326 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
978 { 1327 {
979 PERL_ASYNC_CHECK (); 1328 PERL_ASYNC_CHECK ();
980 1329
981 if (cctx->flags & CC_TRACE_ALL) 1330 if (cctx_current->flags & CC_TRACE_ALL)
982 { 1331 {
983 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1332 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
984 { 1333 {
985 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1334 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
986 SV **bot, **top; 1335 SV **bot, **top;
987 AV *av = newAV (); /* return values */ 1336 AV *av = newAV (); /* return values */
988 SV **cb; 1337 SV **cb;
… …
1025 1374
1026 if (PL_curcop != &PL_compiling) 1375 if (PL_curcop != &PL_compiling)
1027 { 1376 {
1028 SV **cb; 1377 SV **cb;
1029 1378
1030 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1379 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
1031 { 1380 {
1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1381 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1033 1382
1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1383 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1035 { 1384 {
… …
1058 } 1407 }
1059 1408
1060 oldcxix = cxstack_ix; 1409 oldcxix = cxstack_ix;
1061 } 1410 }
1062 1411
1063 if (cctx->flags & CC_TRACE_LINE) 1412 if (cctx_current->flags & CC_TRACE_LINE)
1064 { 1413 {
1065 dSP; 1414 dSP;
1066 1415
1067 PL_runops = RUNOPS_DEFAULT; 1416 PL_runops = RUNOPS_DEFAULT;
1068 ENTER; 1417 ENTER;
… …
1087 1436
1088 TAINT_NOT; 1437 TAINT_NOT;
1089 return 0; 1438 return 0;
1090} 1439}
1091 1440
1092static struct coro_cctx *cctx_ssl_cctx;
1093static struct CoroSLF cctx_ssl_frame; 1441static struct CoroSLF cctx_ssl_frame;
1094 1442
1095static void 1443static void
1096slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1444slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1097{ 1445{
1098 ta->prev = (struct coro *)cctx_ssl_cctx;
1099 ta->next = 0; 1446 ta->prev = 0;
1100} 1447}
1101 1448
1102static int 1449static int
1103slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1450slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1104{ 1451{
… …
1106 1453
1107 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1454 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1108} 1455}
1109 1456
1110/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1457/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1111static void NOINLINE 1458static void ecb_noinline
1112cctx_prepare (pTHX_ coro_cctx *cctx) 1459cctx_prepare (pTHX)
1113{ 1460{
1114 PL_top_env = &PL_start_env; 1461 PL_top_env = &PL_start_env;
1115 1462
1116 if (cctx->flags & CC_TRACE) 1463 if (cctx_current->flags & CC_TRACE)
1117 PL_runops = runops_trace; 1464 PL_runops = runops_trace;
1118 1465
1119 /* we already must be executing an SLF op, there is no other valid way 1466 /* we already must be executing an SLF op, there is no other valid way
1120 * that can lead to creation of a new cctx */ 1467 * that can lead to creation of a new cctx */
1121 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1468 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1122 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1469 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1123 1470
1124 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1471 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1125 cctx_ssl_cctx = cctx;
1126 cctx_ssl_frame = slf_frame; 1472 cctx_ssl_frame = slf_frame;
1127 1473
1128 slf_frame.prepare = slf_prepare_set_stacklevel; 1474 slf_frame.prepare = slf_prepare_set_stacklevel;
1129 slf_frame.check = slf_check_set_stacklevel; 1475 slf_frame.check = slf_check_set_stacklevel;
1130} 1476}
1131 1477
1132/* the tail of transfer: execute stuff we can only do after a transfer */ 1478/* the tail of transfer: execute stuff we can only do after a transfer */
1133INLINE void 1479ecb_inline void
1134transfer_tail (pTHX) 1480transfer_tail (pTHX)
1135{ 1481{
1136 free_coro_mortal (aTHX); 1482 free_coro_mortal (aTHX);
1483}
1484
1485/* try to exit the same way perl's main function would do */
1486/* we do not bother resetting the environment or other things *7
1487/* that are not, uhm, essential */
1488/* this obviously also doesn't work when perl is embedded */
1489static void ecb_noinline ecb_cold
1490perlish_exit (pTHX)
1491{
1492 int exitstatus = perl_destruct (PL_curinterp);
1493 perl_free (PL_curinterp);
1494 exit (exitstatus);
1137} 1495}
1138 1496
1139/* 1497/*
1140 * this is a _very_ stripped down perl interpreter ;) 1498 * this is a _very_ stripped down perl interpreter ;)
1141 */ 1499 */
… …
1153 /* normally we would need to skip the entersub here */ 1511 /* normally we would need to skip the entersub here */
1154 /* not doing so will re-execute it, which is exactly what we want */ 1512 /* not doing so will re-execute it, which is exactly what we want */
1155 /* PL_nop = PL_nop->op_next */ 1513 /* PL_nop = PL_nop->op_next */
1156 1514
1157 /* inject a fake subroutine call to cctx_init */ 1515 /* inject a fake subroutine call to cctx_init */
1158 cctx_prepare (aTHX_ (coro_cctx *)arg); 1516 cctx_prepare (aTHX);
1159 1517
1160 /* cctx_run is the alternative tail of transfer() */ 1518 /* cctx_run is the alternative tail of transfer() */
1161 transfer_tail (aTHX); 1519 transfer_tail (aTHX);
1162 1520
1163 /* somebody or something will hit me for both perl_run and PL_restartop */ 1521 /* somebody or something will hit me for both perl_run and PL_restartop */
1164 PL_restartop = PL_op; 1522 PL_restartop = PL_op;
1165 perl_run (PL_curinterp); 1523 perl_run (PL_curinterp);
1166 /* 1524 /*
1167 * Unfortunately, there is no way to get at the return values of the 1525 * Unfortunately, there is no way to get at the return values of the
1168 * coro body here, as perl_run destroys these 1526 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1527 * runtime errors here, as this is just a random interpreter, not a thread.
1169 */ 1528 */
1170 1529
1171 /* 1530 /*
1172 * If perl-run returns we assume exit() was being called or the coro 1531 * If perl-run returns we assume exit() was being called or the coro
1173 * fell off the end, which seems to be the only valid (non-bug) 1532 * fell off the end, which seems to be the only valid (non-bug)
1174 * reason for perl_run to return. We try to exit by jumping to the 1533 * reason for perl_run to return. We try to mimic whatever perl is normally
1175 * bootstrap-time "top" top_env, as we cannot restore the "main" 1534 * doing in that case. YMMV.
1176 * coroutine as Coro has no such concept
1177 */ 1535 */
1178 PL_top_env = main_top_env; 1536 perlish_exit (aTHX);
1179 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1180 } 1537 }
1181} 1538}
1182 1539
1183static coro_cctx * 1540static coro_cctx *
1184cctx_new () 1541cctx_new (void)
1185{ 1542{
1186 coro_cctx *cctx; 1543 coro_cctx *cctx;
1187 1544
1188 ++cctx_count; 1545 ++cctx_count;
1189 New (0, cctx, 1, coro_cctx); 1546 New (0, cctx, 1, coro_cctx);
… …
1195 return cctx; 1552 return cctx;
1196} 1553}
1197 1554
1198/* create a new cctx only suitable as source */ 1555/* create a new cctx only suitable as source */
1199static coro_cctx * 1556static coro_cctx *
1200cctx_new_empty () 1557cctx_new_empty (void)
1201{ 1558{
1202 coro_cctx *cctx = cctx_new (); 1559 coro_cctx *cctx = cctx_new ();
1203 1560
1204 cctx->sptr = 0; 1561 cctx->stack.sptr = 0;
1205 coro_create (&cctx->cctx, 0, 0, 0, 0); 1562 coro_create (&cctx->cctx, 0, 0, 0, 0);
1206 1563
1207 return cctx; 1564 return cctx;
1208} 1565}
1209 1566
1210/* create a new cctx suitable as destination/running a perl interpreter */ 1567/* create a new cctx suitable as destination/running a perl interpreter */
1211static coro_cctx * 1568static coro_cctx *
1212cctx_new_run () 1569cctx_new_run (void)
1213{ 1570{
1214 coro_cctx *cctx = cctx_new (); 1571 coro_cctx *cctx = cctx_new ();
1215 void *stack_start;
1216 size_t stack_size;
1217 1572
1218#if HAVE_MMAP 1573 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1219 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1220 /* mmap supposedly does allocate-on-write for us */
1221 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1222
1223 if (cctx->sptr != (void *)-1)
1224 {
1225 #if CORO_STACKGUARD
1226 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1227 #endif
1228 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1229 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1230 cctx->flags |= CC_MAPPED;
1231 } 1574 {
1232 else
1233#endif
1234 {
1235 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1236 New (0, cctx->sptr, cctx_stacksize, long);
1237
1238 if (!cctx->sptr)
1239 {
1240 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1575 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1241 _exit (EXIT_FAILURE); 1576 _exit (EXIT_FAILURE);
1242 }
1243
1244 stack_start = cctx->sptr;
1245 stack_size = cctx->ssize;
1246 } 1577 }
1247 1578
1248 #if CORO_USE_VALGRIND
1249 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1250 #endif
1251
1252 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1579 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1253 1580
1254 return cctx; 1581 return cctx;
1255} 1582}
1256 1583
1257static void 1584static void
1258cctx_destroy (coro_cctx *cctx) 1585cctx_destroy (coro_cctx *cctx)
1259{ 1586{
1260 if (!cctx) 1587 if (!cctx)
1261 return; 1588 return;
1262 1589
1590 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1591
1263 --cctx_count; 1592 --cctx_count;
1264 coro_destroy (&cctx->cctx); 1593 coro_destroy (&cctx->cctx);
1265 1594
1266 /* coro_transfer creates new, empty cctx's */ 1595 coro_stack_free (&cctx->stack);
1267 if (cctx->sptr)
1268 {
1269 #if CORO_USE_VALGRIND
1270 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1271 #endif
1272
1273#if HAVE_MMAP
1274 if (cctx->flags & CC_MAPPED)
1275 munmap (cctx->sptr, cctx->ssize);
1276 else
1277#endif
1278 Safefree (cctx->sptr);
1279 }
1280 1596
1281 Safefree (cctx); 1597 Safefree (cctx);
1282} 1598}
1283 1599
1284/* wether this cctx should be destructed */ 1600/* wether this cctx should be destructed */
1285#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1601#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1286 1602
1287static coro_cctx * 1603static coro_cctx *
1288cctx_get (pTHX) 1604cctx_get (pTHX)
1289{ 1605{
1290 while (expect_true (cctx_first)) 1606 while (ecb_expect_true (cctx_first))
1291 { 1607 {
1292 coro_cctx *cctx = cctx_first; 1608 coro_cctx *cctx = cctx_first;
1293 cctx_first = cctx->next; 1609 cctx_first = cctx->next;
1294 --cctx_idle; 1610 --cctx_idle;
1295 1611
1296 if (expect_true (!CCTX_EXPIRED (cctx))) 1612 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1297 return cctx; 1613 return cctx;
1298 1614
1299 cctx_destroy (cctx); 1615 cctx_destroy (cctx);
1300 } 1616 }
1301 1617
… …
1303} 1619}
1304 1620
1305static void 1621static void
1306cctx_put (coro_cctx *cctx) 1622cctx_put (coro_cctx *cctx)
1307{ 1623{
1308 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1624 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1309 1625
1310 /* free another cctx if overlimit */ 1626 /* free another cctx if overlimit */
1311 if (expect_false (cctx_idle >= cctx_max_idle)) 1627 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1312 { 1628 {
1313 coro_cctx *first = cctx_first; 1629 coro_cctx *first = cctx_first;
1314 cctx_first = first->next; 1630 cctx_first = first->next;
1315 --cctx_idle; 1631 --cctx_idle;
1316 1632
… …
1327static void 1643static void
1328transfer_check (pTHX_ struct coro *prev, struct coro *next) 1644transfer_check (pTHX_ struct coro *prev, struct coro *next)
1329{ 1645{
1330 /* TODO: throwing up here is considered harmful */ 1646 /* TODO: throwing up here is considered harmful */
1331 1647
1332 if (expect_true (prev != next)) 1648 if (ecb_expect_true (prev != next))
1333 { 1649 {
1334 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1650 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1335 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1651 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1336 1652
1337 if (expect_false (next->flags & CF_RUNNING)) 1653 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1338 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1339
1340 if (expect_false (next->flags & CF_DESTROYED))
1341 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1654 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1342 1655
1343#if !PERL_VERSION_ATLEAST (5,10,0) 1656#if !PERL_VERSION_ATLEAST (5,10,0)
1344 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1657 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1345 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1658 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1346#endif 1659#endif
1347 } 1660 }
1348} 1661}
1349 1662
1350/* always use the TRANSFER macro */ 1663/* always use the TRANSFER macro */
1351static void NOINLINE /* noinline so we have a fixed stackframe */ 1664static void ecb_noinline /* noinline so we have a fixed stackframe */
1352transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1665transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1353{ 1666{
1354 dSTACKLEVEL; 1667 dSTACKLEVEL;
1355 1668
1356 /* sometimes transfer is only called to set idle_sp */ 1669 /* sometimes transfer is only called to set idle_sp */
1357 if (expect_false (!next)) 1670 if (ecb_expect_false (!prev))
1358 { 1671 {
1359 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1672 cctx_current->idle_sp = STACKLEVEL;
1360 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1673 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1361 } 1674 }
1362 else if (expect_true (prev != next)) 1675 else if (ecb_expect_true (prev != next))
1363 { 1676 {
1364 coro_cctx *prev__cctx; 1677 coro_cctx *cctx_prev;
1365 1678
1366 if (expect_false (prev->flags & CF_NEW)) 1679 if (ecb_expect_false (prev->flags & CF_NEW))
1367 { 1680 {
1368 /* create a new empty/source context */ 1681 /* create a new empty/source context */
1369 prev->cctx = cctx_new_empty ();
1370 prev->flags &= ~CF_NEW; 1682 prev->flags &= ~CF_NEW;
1371 prev->flags |= CF_RUNNING; 1683 prev->flags |= CF_RUNNING;
1372 } 1684 }
1373 1685
1374 prev->flags &= ~CF_RUNNING; 1686 prev->flags &= ~CF_RUNNING;
1375 next->flags |= CF_RUNNING; 1687 next->flags |= CF_RUNNING;
1376 1688
1377 /* first get rid of the old state */ 1689 /* first get rid of the old state */
1378 save_perl (aTHX_ prev); 1690 save_perl (aTHX_ prev);
1379 1691
1380 if (expect_false (next->flags & CF_NEW)) 1692 if (ecb_expect_false (next->flags & CF_NEW))
1381 { 1693 {
1382 /* need to start coroutine */ 1694 /* need to start coroutine */
1383 next->flags &= ~CF_NEW; 1695 next->flags &= ~CF_NEW;
1384 /* setup coroutine call */ 1696 /* setup coroutine call */
1385 coro_setup (aTHX_ next); 1697 init_perl (aTHX_ next);
1386 } 1698 }
1387 else 1699 else
1388 load_perl (aTHX_ next); 1700 load_perl (aTHX_ next);
1389 1701
1390 prev__cctx = prev->cctx;
1391
1392 /* possibly untie and reuse the cctx */ 1702 /* possibly untie and reuse the cctx */
1393 if (expect_true ( 1703 if (ecb_expect_true (
1394 prev__cctx->idle_sp == STACKLEVEL 1704 cctx_current->idle_sp == STACKLEVEL
1395 && !(prev__cctx->flags & CC_TRACE) 1705 && !(cctx_current->flags & CC_TRACE)
1396 && !force_cctx 1706 && !force_cctx
1397 )) 1707 ))
1398 { 1708 {
1399 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1709 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1400 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1710 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1401 1711
1402 prev->cctx = 0;
1403
1404 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1712 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1405 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1713 /* without this the next cctx_get might destroy the running cctx while still in use */
1406 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1714 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1407 if (!next->cctx) 1715 if (ecb_expect_true (!next->cctx))
1408 next->cctx = cctx_get (aTHX); 1716 next->cctx = cctx_get (aTHX);
1409 1717
1410 cctx_put (prev__cctx); 1718 cctx_put (cctx_current);
1411 } 1719 }
1720 else
1721 prev->cctx = cctx_current;
1412 1722
1413 ++next->usecount; 1723 ++next->usecount;
1414 1724
1415 if (expect_true (!next->cctx)) 1725 cctx_prev = cctx_current;
1416 next->cctx = cctx_get (aTHX); 1726 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1417 1727
1418 if (expect_false (prev__cctx != next->cctx)) 1728 next->cctx = 0;
1729
1730 if (ecb_expect_false (cctx_prev != cctx_current))
1419 { 1731 {
1420 prev__cctx->top_env = PL_top_env; 1732 cctx_prev->top_env = PL_top_env;
1421 PL_top_env = next->cctx->top_env; 1733 PL_top_env = cctx_current->top_env;
1422 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1734 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1423 } 1735 }
1424 1736
1425 transfer_tail (aTHX); 1737 transfer_tail (aTHX);
1426 } 1738 }
1427} 1739}
… …
1429#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1741#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1430#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1742#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1431 1743
1432/** high level stuff ********************************************************/ 1744/** high level stuff ********************************************************/
1433 1745
1746/* this function is actually Coro, not Coro::State, but we call it from here */
1747/* because it is convenient - but it hasn't been declared yet for that reason */
1434static int 1748static void
1749coro_call_on_destroy (pTHX_ struct coro *coro);
1750
1751static void
1435coro_state_destroy (pTHX_ struct coro *coro) 1752coro_state_destroy (pTHX_ struct coro *coro)
1436{ 1753{
1437 if (coro->flags & CF_DESTROYED) 1754 if (coro->flags & CF_ZOMBIE)
1438 return 0; 1755 return;
1439 1756
1440 if (coro->on_destroy)
1441 coro->on_destroy (aTHX_ coro); 1757 slf_destroy (aTHX_ coro);
1442 1758
1443 coro->flags |= CF_DESTROYED; 1759 coro->flags |= CF_ZOMBIE;
1444 1760
1445 if (coro->flags & CF_READY) 1761 if (coro->flags & CF_READY)
1446 { 1762 {
1447 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1763 /* reduce nready, as destroying a ready coro effectively unreadies it */
1448 /* alternative: look through all ready queues and remove the coro */ 1764 /* alternative: look through all ready queues and remove the coro */
1449 --coro_nready; 1765 --coro_nready;
1450 } 1766 }
1451 else 1767 else
1452 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1768 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1453 1769
1454 if (coro->mainstack && coro->mainstack != main_mainstack) 1770 if (coro->next) coro->next->prev = coro->prev;
1455 { 1771 if (coro->prev) coro->prev->next = coro->next;
1456 struct coro temp; 1772 if (coro == coro_first) coro_first = coro->next;
1457 1773
1458 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1774 if (coro->mainstack
1459 1775 && coro->mainstack != main_mainstack
1460 save_perl (aTHX_ &temp); 1776 && coro->slot
1777 && !PL_dirty)
1461 load_perl (aTHX_ coro); 1778 destroy_perl (aTHX_ coro);
1462
1463 coro_destruct (aTHX_ coro);
1464
1465 load_perl (aTHX_ &temp);
1466
1467 coro->slot = 0;
1468 }
1469 1779
1470 cctx_destroy (coro->cctx); 1780 cctx_destroy (coro->cctx);
1471 SvREFCNT_dec (coro->startcv); 1781 SvREFCNT_dec (coro->startcv);
1472 SvREFCNT_dec (coro->args); 1782 SvREFCNT_dec (coro->args);
1783 SvREFCNT_dec (coro->swap_sv);
1473 SvREFCNT_dec (CORO_THROW); 1784 SvREFCNT_dec (CORO_THROW);
1474 1785
1475 if (coro->next) coro->next->prev = coro->prev; 1786 coro_call_on_destroy (aTHX_ coro);
1476 if (coro->prev) coro->prev->next = coro->next;
1477 if (coro == coro_first) coro_first = coro->next;
1478 1787
1479 return 1; 1788 /* more destruction mayhem in coro_state_free */
1480} 1789}
1481 1790
1482static int 1791static int
1483coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1792coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1484{ 1793{
1485 struct coro *coro = (struct coro *)mg->mg_ptr; 1794 struct coro *coro = (struct coro *)mg->mg_ptr;
1486 mg->mg_ptr = 0; 1795 mg->mg_ptr = 0;
1487 1796
1488 coro->hv = 0;
1489
1490 if (--coro->refcnt < 0)
1491 {
1492 coro_state_destroy (aTHX_ coro); 1797 coro_state_destroy (aTHX_ coro);
1798 SvREFCNT_dec (coro->on_destroy);
1799 SvREFCNT_dec (coro->status);
1800
1493 Safefree (coro); 1801 Safefree (coro);
1494 }
1495 1802
1496 return 0; 1803 return 0;
1497} 1804}
1498 1805
1499static int 1806static int ecb_cold
1500coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1807coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1501{ 1808{
1502 struct coro *coro = (struct coro *)mg->mg_ptr; 1809 /* called when perl clones the current process the slow way (windows process emulation) */
1503 1810 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1504 ++coro->refcnt; 1811 mg->mg_ptr = 0;
1812 mg->mg_virtual = 0;
1505 1813
1506 return 0; 1814 return 0;
1507} 1815}
1508 1816
1509static MGVTBL coro_state_vtbl = { 1817static MGVTBL coro_state_vtbl = {
… …
1532 1840
1533 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1841 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1534 TRANSFER (ta, 1); 1842 TRANSFER (ta, 1);
1535} 1843}
1536 1844
1537/*****************************************************************************/
1538/* gensub: simple closure generation utility */
1539
1540#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1541
1542/* create a closure from XS, returns a code reference */
1543/* the arg can be accessed via GENSUB_ARG from the callback */
1544/* the callback must use dXSARGS/XSRETURN */
1545static SV *
1546gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1547{
1548 CV *cv = (CV *)newSV (0);
1549
1550 sv_upgrade ((SV *)cv, SVt_PVCV);
1551
1552 CvANON_on (cv);
1553 CvISXSUB_on (cv);
1554 CvXSUB (cv) = xsub;
1555 GENSUB_ARG = arg;
1556
1557 return newRV_noinc ((SV *)cv);
1558}
1559
1560/** Coro ********************************************************************/ 1845/** Coro ********************************************************************/
1561 1846
1562INLINE void 1847ecb_inline void
1563coro_enq (pTHX_ struct coro *coro) 1848coro_enq (pTHX_ struct coro *coro)
1564{ 1849{
1565 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1850 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1566}
1567 1851
1568INLINE SV * 1852 SvREFCNT_inc_NN (coro->hv);
1853
1854 coro->next_ready = 0;
1855 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1856 ready [1] = coro;
1857}
1858
1859ecb_inline struct coro *
1569coro_deq (pTHX) 1860coro_deq (pTHX)
1570{ 1861{
1571 int prio; 1862 int prio;
1572 1863
1573 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1864 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1574 if (AvFILLp (coro_ready [prio]) >= 0) 1865 {
1575 return av_shift (coro_ready [prio]); 1866 struct coro **ready = coro_ready [prio];
1867
1868 if (ready [0])
1869 {
1870 struct coro *coro = ready [0];
1871 ready [0] = coro->next_ready;
1872 return coro;
1873 }
1874 }
1576 1875
1577 return 0; 1876 return 0;
1877}
1878
1879static void
1880invoke_sv_ready_hook_helper (void)
1881{
1882 dTHX;
1883 dSP;
1884
1885 ENTER;
1886 SAVETMPS;
1887
1888 PUSHMARK (SP);
1889 PUTBACK;
1890 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1891
1892 FREETMPS;
1893 LEAVE;
1578} 1894}
1579 1895
1580static int 1896static int
1581api_ready (pTHX_ SV *coro_sv) 1897api_ready (pTHX_ SV *coro_sv)
1582{ 1898{
1583 struct coro *coro;
1584 SV *sv_hook;
1585 void (*xs_hook)(void);
1586
1587 if (SvROK (coro_sv))
1588 coro_sv = SvRV (coro_sv);
1589
1590 coro = SvSTATE (coro_sv); 1899 struct coro *coro = SvSTATE (coro_sv);
1591 1900
1592 if (coro->flags & CF_READY) 1901 if (coro->flags & CF_READY)
1593 return 0; 1902 return 0;
1594 1903
1595 coro->flags |= CF_READY; 1904 coro->flags |= CF_READY;
1596 1905
1597 sv_hook = coro_nready ? 0 : coro_readyhook;
1598 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1599
1600 coro_enq (aTHX_ coro); 1906 coro_enq (aTHX_ coro);
1601 ++coro_nready;
1602 1907
1603 if (sv_hook) 1908 if (!coro_nready++)
1604 { 1909 if (coroapi.readyhook)
1605 dSP; 1910 coroapi.readyhook ();
1606
1607 ENTER;
1608 SAVETMPS;
1609
1610 PUSHMARK (SP);
1611 PUTBACK;
1612 call_sv (sv_hook, G_VOID | G_DISCARD);
1613
1614 FREETMPS;
1615 LEAVE;
1616 }
1617
1618 if (xs_hook)
1619 xs_hook ();
1620 1911
1621 return 1; 1912 return 1;
1622} 1913}
1623 1914
1624static int 1915static int
… …
1626{ 1917{
1627 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1918 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1628} 1919}
1629 1920
1630/* expects to own a reference to next->hv */ 1921/* expects to own a reference to next->hv */
1631INLINE void 1922ecb_inline void
1632prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) 1923prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1633{ 1924{
1634 SV *prev_sv = SvRV (coro_current); 1925 SV *prev_sv = SvRV (coro_current);
1635 1926
1636 ta->prev = SvSTATE_hv (prev_sv); 1927 ta->prev = SvSTATE_hv (prev_sv);
… …
1647static void 1938static void
1648prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1939prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1649{ 1940{
1650 for (;;) 1941 for (;;)
1651 { 1942 {
1652 SV *next_sv = coro_deq (aTHX); 1943 struct coro *next = coro_deq (aTHX);
1653 1944
1654 if (expect_true (next_sv)) 1945 if (ecb_expect_true (next))
1655 { 1946 {
1656 struct coro *next = SvSTATE_hv (next_sv);
1657
1658 /* cannot transfer to destroyed coros, skip and look for next */ 1947 /* cannot transfer to destroyed coros, skip and look for next */
1659 if (expect_false (next->flags & CF_DESTROYED)) 1948 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1660 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */ 1949 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1661 else 1950 else
1662 { 1951 {
1663 next->flags &= ~CF_READY; 1952 next->flags &= ~CF_READY;
1664 --coro_nready; 1953 --coro_nready;
1665 1954
… …
1668 } 1957 }
1669 } 1958 }
1670 else 1959 else
1671 { 1960 {
1672 /* nothing to schedule: call the idle handler */ 1961 /* nothing to schedule: call the idle handler */
1962 if (SvROK (sv_idle)
1963 && SvOBJECT (SvRV (sv_idle)))
1964 {
1965 if (SvRV (sv_idle) == SvRV (coro_current))
1966 {
1967 require_pv ("Carp");
1968
1969 {
1970 dSP;
1971
1972 ENTER;
1973 SAVETMPS;
1974
1975 PUSHMARK (SP);
1976 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
1977 PUTBACK;
1978 call_pv ("Carp::confess", G_VOID | G_DISCARD);
1979
1980 FREETMPS;
1981 LEAVE;
1982 }
1983 }
1984
1985 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1986 api_ready (aTHX_ SvRV (sv_idle));
1987 --coro_nready;
1988 }
1989 else
1990 {
1991 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1673 dSP; 1992 dSP;
1674 1993
1675 ENTER; 1994 ENTER;
1676 SAVETMPS; 1995 SAVETMPS;
1677 1996
1678 PUSHMARK (SP); 1997 PUSHMARK (SP);
1679 PUTBACK; 1998 PUTBACK;
1680 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD); 1999 call_sv (sv_idle, G_VOID | G_DISCARD);
1681 2000
1682 FREETMPS; 2001 FREETMPS;
1683 LEAVE; 2002 LEAVE;
2003 }
1684 } 2004 }
1685 } 2005 }
1686} 2006}
1687 2007
1688INLINE void 2008ecb_inline void
1689prepare_cede (pTHX_ struct coro_transfer_args *ta) 2009prepare_cede (pTHX_ struct coro_transfer_args *ta)
1690{ 2010{
1691 api_ready (aTHX_ coro_current); 2011 api_ready (aTHX_ coro_current);
1692 prepare_schedule (aTHX_ ta); 2012 prepare_schedule (aTHX_ ta);
1693} 2013}
1694 2014
1695INLINE void 2015ecb_inline void
1696prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2016prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1697{ 2017{
1698 SV *prev = SvRV (coro_current); 2018 SV *prev = SvRV (coro_current);
1699 2019
1700 if (coro_nready) 2020 if (coro_nready)
… …
1730{ 2050{
1731 struct coro_transfer_args ta; 2051 struct coro_transfer_args ta;
1732 2052
1733 prepare_cede (aTHX_ &ta); 2053 prepare_cede (aTHX_ &ta);
1734 2054
1735 if (expect_true (ta.prev != ta.next)) 2055 if (ecb_expect_true (ta.prev != ta.next))
1736 { 2056 {
1737 TRANSFER (ta, 1); 2057 TRANSFER (ta, 1);
1738 return 1; 2058 return 1;
1739 } 2059 }
1740 else 2060 else
… …
1759static void 2079static void
1760api_trace (pTHX_ SV *coro_sv, int flags) 2080api_trace (pTHX_ SV *coro_sv, int flags)
1761{ 2081{
1762 struct coro *coro = SvSTATE (coro_sv); 2082 struct coro *coro = SvSTATE (coro_sv);
1763 2083
2084 if (coro->flags & CF_RUNNING)
2085 croak ("cannot enable tracing on a running coroutine, caught");
2086
1764 if (flags & CC_TRACE) 2087 if (flags & CC_TRACE)
1765 { 2088 {
1766 if (!coro->cctx) 2089 if (!coro->cctx)
1767 coro->cctx = cctx_new_run (); 2090 coro->cctx = cctx_new_run ();
1768 else if (!(coro->cctx->flags & CC_TRACE)) 2091 else if (!(coro->cctx->flags & CC_TRACE))
1769 croak ("cannot enable tracing on coroutine with custom stack,"); 2092 croak ("cannot enable tracing on coroutine with custom stack, caught");
1770 2093
1771 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2094 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1772 } 2095 }
1773 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2096 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1774 { 2097 {
… …
1780 coro->slot->runops = RUNOPS_DEFAULT; 2103 coro->slot->runops = RUNOPS_DEFAULT;
1781 } 2104 }
1782} 2105}
1783 2106
1784static void 2107static void
2108coro_push_av (pTHX_ AV *av, I32 gimme_v)
2109{
2110 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2111 {
2112 dSP;
2113
2114 if (gimme_v == G_SCALAR)
2115 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2116 else
2117 {
2118 int i;
2119 EXTEND (SP, AvFILLp (av) + 1);
2120
2121 for (i = 0; i <= AvFILLp (av); ++i)
2122 PUSHs (AvARRAY (av)[i]);
2123 }
2124
2125 PUTBACK;
2126 }
2127}
2128
2129static void
2130coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2131{
2132 if (!coro->on_destroy)
2133 coro->on_destroy = newAV ();
2134
2135 av_push (coro->on_destroy, cb);
2136}
2137
2138static void
2139slf_destroy_join (pTHX_ struct CoroSLF *frame)
2140{
2141 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2142}
2143
2144static int
2145slf_check_join (pTHX_ struct CoroSLF *frame)
2146{
2147 struct coro *coro = (struct coro *)frame->data;
2148
2149 if (!coro->status)
2150 return 1;
2151
2152 frame->destroy = 0;
2153
2154 coro_push_av (aTHX_ coro->status, GIMME_V);
2155
2156 SvREFCNT_dec ((SV *)coro->hv);
2157
2158 return 0;
2159}
2160
2161static void
2162slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2163{
2164 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2165
2166 if (items > 1)
2167 croak ("join called with too many arguments");
2168
2169 if (coro->status)
2170 frame->prepare = prepare_nop;
2171 else
2172 {
2173 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2174 frame->prepare = prepare_schedule;
2175 }
2176
2177 frame->check = slf_check_join;
2178 frame->destroy = slf_destroy_join;
2179 frame->data = (void *)coro;
2180 SvREFCNT_inc (coro->hv);
2181}
2182
2183static void
1785coro_call_on_destroy (pTHX_ struct coro *coro) 2184coro_call_on_destroy (pTHX_ struct coro *coro)
1786{ 2185{
1787 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); 2186 AV *od = coro->on_destroy;
1788 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1789 2187
1790 if (on_destroyp) 2188 if (!od)
1791 { 2189 return;
1792 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1793 2190
2191 coro->on_destroy = 0;
2192 sv_2mortal ((SV *)od);
2193
1794 while (AvFILLp (on_destroy) >= 0) 2194 while (AvFILLp (od) >= 0)
2195 {
2196 SV *cb = sv_2mortal (av_pop (od));
2197
2198 /* coro hv's (and only hv's at the moment) are supported as well */
2199 if (SvSTATEhv_p (aTHX_ cb))
2200 api_ready (aTHX_ cb);
2201 else
1795 { 2202 {
1796 dSP; /* don't disturb outer sp */ 2203 dSP; /* don't disturb outer sp */
1797 SV *cb = av_pop (on_destroy);
1798
1799 PUSHMARK (SP); 2204 PUSHMARK (SP);
1800 2205
1801 if (statusp) 2206 if (coro->status)
1802 { 2207 {
1803 int i; 2208 PUTBACK;
1804 AV *status = (AV *)SvRV (*statusp); 2209 coro_push_av (aTHX_ coro->status, G_ARRAY);
1805 EXTEND (SP, AvFILLp (status) + 1); 2210 SPAGAIN;
1806
1807 for (i = 0; i <= AvFILLp (status); ++i)
1808 PUSHs (AvARRAY (status)[i]);
1809 } 2211 }
1810 2212
1811 PUTBACK; 2213 PUTBACK;
1812 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); 2214 call_sv (cb, G_VOID | G_DISCARD);
1813 } 2215 }
1814 } 2216 }
1815} 2217}
1816 2218
1817static void 2219static void
1818slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2220coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
1819{ 2221{
2222 AV *av;
2223
2224 if (coro->status)
2225 {
2226 av = coro->status;
2227 av_clear (av);
2228 }
2229 else
2230 av = coro->status = newAV ();
2231
2232 /* items are actually not so common, so optimise for this case */
2233 if (items)
2234 {
1820 int i; 2235 int i;
1821 HV *hv = (HV *)SvRV (coro_current);
1822 AV *av = newAV ();
1823 2236
1824 av_extend (av, items - 1); 2237 av_extend (av, items - 1);
2238
1825 for (i = 0; i < items; ++i) 2239 for (i = 0; i < items; ++i)
1826 av_push (av, SvREFCNT_inc_NN (arg [i])); 2240 av_push (av, SvREFCNT_inc_NN (arg [i]));
2241 }
2242}
1827 2243
1828 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); 2244static void
1829 2245slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2246{
1830 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ 2247 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1831 api_ready (aTHX_ sv_manager); 2248 api_ready (aTHX_ sv_manager);
1832 2249
1833 frame->prepare = prepare_schedule; 2250 frame->prepare = prepare_schedule;
1834 frame->check = slf_check_repeat; 2251 frame->check = slf_check_repeat;
2252
2253 /* as a minor optimisation, we could unwind all stacks here */
2254 /* but that puts extra pressure on pp_slf, and is not worth much */
2255 /*coro_unwind_stacks (aTHX);*/
2256}
2257
2258static void
2259slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2260{
2261 HV *coro_hv = (HV *)SvRV (coro_current);
2262
2263 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2264 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2265}
2266
2267static void
2268slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2269{
2270 HV *coro_hv;
2271 struct coro *coro;
2272
2273 if (items <= 0)
2274 croak ("Coro::cancel called without coro object,");
2275
2276 coro = SvSTATE (arg [0]);
2277 coro_hv = coro->hv;
2278
2279 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2280
2281 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2282 {
2283 /* coro currently busy cancelling something, so just notify it */
2284 coro->slf_frame.data = (void *)coro;
2285
2286 frame->prepare = prepare_nop;
2287 frame->check = slf_check_nop;
2288 }
2289 else if (coro_hv == (HV *)SvRV (coro_current))
2290 {
2291 /* cancelling the current coro is allowed, and equals terminate */
2292 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2293 }
2294 else
2295 {
2296 struct coro *self = SvSTATE_current;
2297
2298 if (!self)
2299 croak ("Coro::cancel called outside of thread content,");
2300
2301 /* otherwise we cancel directly, purely for speed reasons
2302 * unfortunately, this requires some magic trickery, as
2303 * somebody else could cancel us, so we have to fight the cancellation.
2304 * this is ugly, and hopefully fully worth the extra speed.
2305 * besides, I can't get the slow-but-safe version working...
2306 */
2307 slf_frame.data = 0;
2308 self->flags |= CF_NOCANCEL;
2309 coro_state_destroy (aTHX_ coro);
2310 self->flags &= ~CF_NOCANCEL;
2311
2312 if (slf_frame.data)
2313 {
2314 /* while we were busy we have been cancelled, so terminate */
2315 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2316 }
2317 else
2318 {
2319 frame->prepare = prepare_nop;
2320 frame->check = slf_check_nop;
2321 }
2322 }
2323}
2324
2325static int
2326slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2327{
2328 frame->prepare = 0;
2329 coro_unwind_stacks (aTHX);
2330
2331 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2332
2333 return 1;
2334}
2335
2336static int
2337safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2338{
2339 if (coro->cctx)
2340 croak ("coro inside C callback, unable to cancel at this time, caught");
2341
2342 if (coro->flags & CF_NEW)
2343 {
2344 coro_set_status (aTHX_ coro, arg, items);
2345 coro_state_destroy (aTHX_ coro);
2346 }
2347 else
2348 {
2349 if (!coro->slf_frame.prepare)
2350 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2351
2352 slf_destroy (aTHX_ coro);
2353
2354 coro_set_status (aTHX_ coro, arg, items);
2355 coro->slf_frame.prepare = prepare_nop;
2356 coro->slf_frame.check = slf_check_safe_cancel;
2357
2358 api_ready (aTHX_ (SV *)coro->hv);
2359 }
2360
2361 return 1;
1835} 2362}
1836 2363
1837/*****************************************************************************/ 2364/*****************************************************************************/
1838/* async pool handler */ 2365/* async pool handler */
1839 2366
… …
1870slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2397slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1871{ 2398{
1872 HV *hv = (HV *)SvRV (coro_current); 2399 HV *hv = (HV *)SvRV (coro_current);
1873 struct coro *coro = SvSTATE_hv ((SV *)hv); 2400 struct coro *coro = SvSTATE_hv ((SV *)hv);
1874 2401
1875 if (expect_true (coro->saved_deffh)) 2402 if (ecb_expect_true (coro->saved_deffh))
1876 { 2403 {
1877 /* subsequent iteration */ 2404 /* subsequent iteration */
1878 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2405 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1879 coro->saved_deffh = 0; 2406 coro->saved_deffh = 0;
1880 2407
1881 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2408 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1882 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2409 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1883 { 2410 {
1884 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2411 slf_init_terminate_cancel_common (aTHX_ frame, hv);
1885 coro->invoke_av = newAV (); 2412 return;
1886
1887 frame->prepare = prepare_nop;
1888 } 2413 }
1889 else 2414 else
1890 { 2415 {
1891 av_clear (GvAV (PL_defgv)); 2416 av_clear (GvAV (PL_defgv));
1892 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2417 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
… …
1917 2442
1918static void 2443static void
1919coro_rouse_callback (pTHX_ CV *cv) 2444coro_rouse_callback (pTHX_ CV *cv)
1920{ 2445{
1921 dXSARGS; 2446 dXSARGS;
1922 SV *data = (SV *)GENSUB_ARG; 2447 SV *data = (SV *)S_GENSUB_ARG;
1923 2448
1924 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2449 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1925 { 2450 {
1926 /* first call, set args */ 2451 /* first call, set args */
2452 SV *coro = SvRV (data);
1927 AV *av = newAV (); 2453 AV *av = newAV ();
1928 SV *coro = SvRV (data);
1929 2454
1930 SvRV_set (data, (SV *)av); 2455 SvRV_set (data, (SV *)av);
1931 api_ready (aTHX_ coro);
1932 SvREFCNT_dec (coro);
1933 2456
1934 /* better take a full copy of the arguments */ 2457 /* better take a full copy of the arguments */
1935 while (items--) 2458 while (items--)
1936 av_store (av, items, newSVsv (ST (items))); 2459 av_store (av, items, newSVsv (ST (items)));
2460
2461 api_ready (aTHX_ coro);
2462 SvREFCNT_dec (coro);
1937 } 2463 }
1938 2464
1939 XSRETURN_EMPTY; 2465 XSRETURN_EMPTY;
1940} 2466}
1941 2467
1942static int 2468static int
1943slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2469slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1944{ 2470{
1945 SV *data = (SV *)frame->data; 2471 SV *data = (SV *)frame->data;
1946 2472
1947 if (CORO_THROW) 2473 if (CORO_THROW)
1948 return 0; 2474 return 0;
1949 2475
1950 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2476 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1951 return 1; 2477 return 1;
… …
1958 2484
1959 EXTEND (SP, AvFILLp (av) + 1); 2485 EXTEND (SP, AvFILLp (av) + 1);
1960 for (i = 0; i <= AvFILLp (av); ++i) 2486 for (i = 0; i <= AvFILLp (av); ++i)
1961 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2487 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1962 2488
1963 /* we have stolen the elements, so ste length to zero and free */ 2489 /* we have stolen the elements, so set length to zero and free */
1964 AvFILLp (av) = -1; 2490 AvFILLp (av) = -1;
1965 av_undef (av); 2491 av_undef (av);
1966 2492
1967 PUTBACK; 2493 PUTBACK;
1968 } 2494 }
… …
1987 cb = sv_2mortal (coro->rouse_cb); 2513 cb = sv_2mortal (coro->rouse_cb);
1988 coro->rouse_cb = 0; 2514 coro->rouse_cb = 0;
1989 } 2515 }
1990 2516
1991 if (!SvROK (cb) 2517 if (!SvROK (cb)
1992 || SvTYPE (SvRV (cb)) != SVt_PVCV 2518 || SvTYPE (SvRV (cb)) != SVt_PVCV
1993 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2519 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1994 croak ("Coro::rouse_wait called with illegal callback argument,"); 2520 croak ("Coro::rouse_wait called with illegal callback argument,");
1995 2521
1996 { 2522 {
1997 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2523 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1998 SV *data = (SV *)GENSUB_ARG; 2524 SV *data = (SV *)S_GENSUB_ARG;
1999 2525
2000 frame->data = (void *)data; 2526 frame->data = (void *)data;
2001 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2527 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2002 frame->check = slf_check_rouse_wait; 2528 frame->check = slf_check_rouse_wait;
2003 } 2529 }
… …
2007coro_new_rouse_cb (pTHX) 2533coro_new_rouse_cb (pTHX)
2008{ 2534{
2009 HV *hv = (HV *)SvRV (coro_current); 2535 HV *hv = (HV *)SvRV (coro_current);
2010 struct coro *coro = SvSTATE_hv (hv); 2536 struct coro *coro = SvSTATE_hv (hv);
2011 SV *data = newRV_inc ((SV *)hv); 2537 SV *data = newRV_inc ((SV *)hv);
2012 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2538 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2013 2539
2014 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2540 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2015 SvREFCNT_dec (data); /* magicext increases the refcount */ 2541 SvREFCNT_dec (data); /* magicext increases the refcount */
2016 2542
2017 SvREFCNT_dec (coro->rouse_cb); 2543 SvREFCNT_dec (coro->rouse_cb);
… …
2114static void 2640static void
2115slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2641slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2116{ 2642{
2117 frame->prepare = prepare_cede_notself; 2643 frame->prepare = prepare_cede_notself;
2118 frame->check = slf_check_nop; 2644 frame->check = slf_check_nop;
2645}
2646
2647/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2648static void
2649slf_destroy (pTHX_ struct coro *coro)
2650{
2651 struct CoroSLF frame = coro->slf_frame;
2652
2653 /*
2654 * The on_destroy below most likely is from an SLF call.
2655 * Since by definition the SLF call will not finish when we destroy
2656 * the coro, we will have to force-finish it here, otherwise
2657 * cleanup functions cannot call SLF functions.
2658 */
2659 coro->slf_frame.prepare = 0;
2660
2661 /* this callback is reserved for slf functions needing to do cleanup */
2662 if (frame.destroy && frame.prepare && !PL_dirty)
2663 frame.destroy (aTHX_ &frame);
2119} 2664}
2120 2665
2121/* 2666/*
2122 * these not obviously related functions are all rolled into one 2667 * these not obviously related functions are all rolled into one
2123 * function to increase chances that they all will call transfer with the same 2668 * function to increase chances that they all will call transfer with the same
… …
2130 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2675 I32 checkmark; /* mark SP to see how many elements check has pushed */
2131 2676
2132 /* set up the slf frame, unless it has already been set-up */ 2677 /* set up the slf frame, unless it has already been set-up */
2133 /* the latter happens when a new coro has been started */ 2678 /* the latter happens when a new coro has been started */
2134 /* or when a new cctx was attached to an existing coroutine */ 2679 /* or when a new cctx was attached to an existing coroutine */
2135 if (expect_true (!slf_frame.prepare)) 2680 if (ecb_expect_true (!slf_frame.prepare))
2136 { 2681 {
2137 /* first iteration */ 2682 /* first iteration */
2138 dSP; 2683 dSP;
2139 SV **arg = PL_stack_base + TOPMARK + 1; 2684 SV **arg = PL_stack_base + TOPMARK + 1;
2140 int items = SP - arg; /* args without function object */ 2685 int items = SP - arg; /* args without function object */
… …
2181 while (slf_frame.check (aTHX_ &slf_frame)); 2726 while (slf_frame.check (aTHX_ &slf_frame));
2182 2727
2183 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2728 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2184 2729
2185 /* exception handling */ 2730 /* exception handling */
2186 if (expect_false (CORO_THROW)) 2731 if (ecb_expect_false (CORO_THROW))
2187 { 2732 {
2188 SV *exception = sv_2mortal (CORO_THROW); 2733 SV *exception = sv_2mortal (CORO_THROW);
2189 2734
2190 CORO_THROW = 0; 2735 CORO_THROW = 0;
2191 sv_setsv (ERRSV, exception); 2736 sv_setsv (ERRSV, exception);
2192 croak (0); 2737 croak (0);
2193 } 2738 }
2194 2739
2195 /* return value handling - mostly like entersub */ 2740 /* return value handling - mostly like entersub */
2196 /* make sure we put something on the stack in scalar context */ 2741 /* make sure we put something on the stack in scalar context */
2197 if (GIMME_V == G_SCALAR) 2742 if (GIMME_V == G_SCALAR
2743 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2198 { 2744 {
2199 dSP; 2745 dSP;
2200 SV **bot = PL_stack_base + checkmark; 2746 SV **bot = PL_stack_base + checkmark;
2201 2747
2202 if (sp == bot) /* too few, push undef */ 2748 if (sp == bot) /* too few, push undef */
2203 bot [1] = &PL_sv_undef; 2749 bot [1] = &PL_sv_undef;
2204 else if (sp != bot + 1) /* too many, take last one */ 2750 else /* too many, take last one */
2205 bot [1] = *sp; 2751 bot [1] = *sp;
2206 2752
2207 SP = bot + 1; 2753 SP = bot + 1;
2208 2754
2209 PUTBACK; 2755 PUTBACK;
… …
2242 if (PL_op->op_flags & OPf_STACKED) 2788 if (PL_op->op_flags & OPf_STACKED)
2243 { 2789 {
2244 if (items > slf_arga) 2790 if (items > slf_arga)
2245 { 2791 {
2246 slf_arga = items; 2792 slf_arga = items;
2247 free (slf_argv); 2793 Safefree (slf_argv);
2248 slf_argv = malloc (slf_arga * sizeof (SV *)); 2794 New (0, slf_argv, slf_arga, SV *);
2249 } 2795 }
2250 2796
2251 slf_argc = items; 2797 slf_argc = items;
2252 2798
2253 for (i = 0; i < items; ++i) 2799 for (i = 0; i < items; ++i)
… …
2258 2804
2259 PL_op->op_ppaddr = pp_slf; 2805 PL_op->op_ppaddr = pp_slf;
2260 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */ 2806 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2261 2807
2262 PL_op = (OP *)&slf_restore; 2808 PL_op = (OP *)&slf_restore;
2809}
2810
2811/*****************************************************************************/
2812/* dynamic wind */
2813
2814static void
2815on_enterleave_call (pTHX_ SV *cb)
2816{
2817 dSP;
2818
2819 PUSHSTACK;
2820
2821 PUSHMARK (SP);
2822 PUTBACK;
2823 call_sv (cb, G_VOID | G_DISCARD);
2824 SPAGAIN;
2825
2826 POPSTACK;
2827}
2828
2829static SV *
2830coro_avp_pop_and_free (pTHX_ AV **avp)
2831{
2832 AV *av = *avp;
2833 SV *res = av_pop (av);
2834
2835 if (AvFILLp (av) < 0)
2836 {
2837 *avp = 0;
2838 SvREFCNT_dec (av);
2839 }
2840
2841 return res;
2842}
2843
2844static void
2845coro_pop_on_enter (pTHX_ void *coro)
2846{
2847 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2848 SvREFCNT_dec (cb);
2849}
2850
2851static void
2852coro_pop_on_leave (pTHX_ void *coro)
2853{
2854 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2855 on_enterleave_call (aTHX_ sv_2mortal (cb));
2856}
2857
2858static void
2859enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2860{
2861 if (!hook)
2862 return;
2863
2864 if (!*avp)
2865 {
2866 *avp = newAV ();
2867 AvREAL_off (*avp);
2868 }
2869
2870 av_push (*avp, (SV *)hook);
2871 av_push (*avp, (SV *)arg);
2872}
2873
2874static void
2875enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2876{
2877 AV *av = *avp;
2878 int i;
2879
2880 if (!av)
2881 return;
2882
2883 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2884 if (AvARRAY (av)[i] == (SV *)hook)
2885 {
2886 if (execute)
2887 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2888
2889 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2890 av_pop (av);
2891 av_pop (av);
2892 break;
2893 }
2894
2895 if (AvFILLp (av) >= 0)
2896 {
2897 *avp = 0;
2898 SvREFCNT_dec_NN (av);
2899 }
2900}
2901
2902static void
2903api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2904{
2905 struct coro *coro = SvSTATE (coro_sv);
2906
2907 if (SvSTATE_current == coro)
2908 if (enter)
2909 enter (aTHX_ enter_arg);
2910
2911 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2912 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2913}
2914
2915static void
2916api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2917{
2918 struct coro *coro = SvSTATE (coro_sv);
2919
2920 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2921 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2922}
2923
2924static void
2925savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2926{
2927 struct coro *coro = SvSTATE_current;
2928
2929 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2930}
2931
2932static void
2933savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2934{
2935 struct coro *coro = SvSTATE_current;
2936
2937 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2938}
2939
2940static void
2941api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2942{
2943 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2944
2945 /* this ought to be much cheaper than malloc + a single destructor call */
2946 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2947 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2263} 2948}
2264 2949
2265/*****************************************************************************/ 2950/*****************************************************************************/
2266/* PerlIO::cede */ 2951/* PerlIO::cede */
2267 2952
… …
2269{ 2954{
2270 PerlIOBuf base; 2955 PerlIOBuf base;
2271 NV next, every; 2956 NV next, every;
2272} PerlIOCede; 2957} PerlIOCede;
2273 2958
2274static IV 2959static IV ecb_cold
2275PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2960PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2276{ 2961{
2277 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2962 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2278 2963
2279 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2964 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2280 self->next = nvtime () + self->every; 2965 self->next = nvtime () + self->every;
2281 2966
2282 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2967 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2283} 2968}
2284 2969
2285static SV * 2970static SV * ecb_cold
2286PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2971PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2287{ 2972{
2288 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2973 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2289 2974
2290 return newSVnv (self->every); 2975 return newSVnv (self->every);
… …
2341/* Coro::Semaphore & Coro::Signal */ 3026/* Coro::Semaphore & Coro::Signal */
2342 3027
2343static SV * 3028static SV *
2344coro_waitarray_new (pTHX_ int count) 3029coro_waitarray_new (pTHX_ int count)
2345{ 3030{
2346 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3031 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2347 AV *av = newAV (); 3032 AV *av = newAV ();
2348 SV **ary; 3033 SV **ary;
2349 3034
2350 /* unfortunately, building manually saves memory */ 3035 /* unfortunately, building manually saves memory */
2351 Newx (ary, 2, SV *); 3036 Newx (ary, 2, SV *);
2352 AvALLOC (av) = ary; 3037 AvALLOC (av) = ary;
3038#if PERL_VERSION_ATLEAST (5,10,0)
2353 /*AvARRAY (av) = ary;*/ 3039 AvARRAY (av) = ary;
3040#else
2354 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ 3041 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3042 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3043 SvPVX ((SV *)av) = (char *)ary;
3044#endif
2355 AvMAX (av) = 1; 3045 AvMAX (av) = 1;
2356 AvFILLp (av) = 0; 3046 AvFILLp (av) = 0;
2357 ary [0] = newSViv (count); 3047 ary [0] = newSViv (count);
2358 3048
2359 return newRV_noinc ((SV *)av); 3049 return newRV_noinc ((SV *)av);
… …
2392 XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); 3082 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2393 PUTBACK; 3083 PUTBACK;
2394 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); 3084 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2395 } 3085 }
2396 3086
2397 SvREFCNT_dec (cb); 3087 SvREFCNT_dec_NN (cb);
2398 } 3088 }
2399} 3089}
2400 3090
2401static void 3091static void
2402coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3092coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2403{ 3093{
2404 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3094 /* call $sem->adjust (0) to possibly wake up some other waiters */
2405 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3095 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2406} 3096}
2407 3097
2408static int 3098static int
2409slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 3099slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2410{ 3100{
2411 AV *av = (AV *)frame->data; 3101 AV *av = (AV *)frame->data;
2412 SV *count_sv = AvARRAY (av)[0]; 3102 SV *count_sv = AvARRAY (av)[0];
3103 SV *coro_hv = SvRV (coro_current);
3104
3105 frame->destroy = 0;
2413 3106
2414 /* if we are about to throw, don't actually acquire the lock, just throw */ 3107 /* if we are about to throw, don't actually acquire the lock, just throw */
2415 if (CORO_THROW) 3108 if (ecb_expect_false (CORO_THROW))
3109 {
3110 /* we still might be responsible for the semaphore, so wake up others */
3111 coro_semaphore_adjust (aTHX_ av, 0);
3112
2416 return 0; 3113 return 0;
3114 }
2417 else if (SvIVX (count_sv) > 0) 3115 else if (SvIVX (count_sv) > 0)
2418 { 3116 {
2419 SvSTATE_current->on_destroy = 0;
2420
2421 if (acquire) 3117 if (acquire)
2422 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3118 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2423 else 3119 else
2424 coro_semaphore_adjust (aTHX_ av, 0); 3120 coro_semaphore_adjust (aTHX_ av, 0);
2425 3121
… …
2429 { 3125 {
2430 int i; 3126 int i;
2431 /* if we were woken up but can't down, we look through the whole */ 3127 /* if we were woken up but can't down, we look through the whole */
2432 /* waiters list and only add us if we aren't in there already */ 3128 /* waiters list and only add us if we aren't in there already */
2433 /* this avoids some degenerate memory usage cases */ 3129 /* this avoids some degenerate memory usage cases */
2434 3130 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2435 for (i = 1; i <= AvFILLp (av); ++i)
2436 if (AvARRAY (av)[i] == SvRV (coro_current)) 3131 if (AvARRAY (av)[i] == coro_hv)
2437 return 1; 3132 return 1;
2438 3133
2439 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3134 av_push (av, SvREFCNT_inc (coro_hv));
2440 return 1; 3135 return 1;
2441 } 3136 }
2442} 3137}
2443 3138
2444static int 3139static int
… …
2467 { 3162 {
2468 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3163 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2469 3164
2470 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3165 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2471 frame->prepare = prepare_schedule; 3166 frame->prepare = prepare_schedule;
2472
2473 /* to avoid race conditions when a woken-up coro gets terminated */ 3167 /* to avoid race conditions when a woken-up coro gets terminated */
2474 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3168 /* we arrange for a temporary on_destroy that calls adjust (0) */
2475 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3169 frame->destroy = coro_semaphore_destroy;
2476 } 3170 }
2477} 3171}
2478 3172
2479static void 3173static void
2480slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3174slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2488{ 3182{
2489 if (items >= 2) 3183 if (items >= 2)
2490 { 3184 {
2491 /* callback form */ 3185 /* callback form */
2492 AV *av = (AV *)SvRV (arg [0]); 3186 AV *av = (AV *)SvRV (arg [0]);
2493 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); 3187 SV *cb_cv = s_get_cv_croak (arg [1]);
2494 3188
2495 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); 3189 av_push (av, SvREFCNT_inc_NN (cb_cv));
2496 3190
2497 if (SvIVX (AvARRAY (av)[0]) > 0) 3191 if (SvIVX (AvARRAY (av)[0]) > 0)
2498 coro_semaphore_adjust (aTHX_ av, 0); 3192 coro_semaphore_adjust (aTHX_ av, 0);
2499 3193
2500 frame->prepare = prepare_nop; 3194 frame->prepare = prepare_nop;
… …
2524 AvARRAY (av)[0] = AvARRAY (av)[1]; 3218 AvARRAY (av)[0] = AvARRAY (av)[1];
2525 AvARRAY (av)[1] = cb; 3219 AvARRAY (av)[1] = cb;
2526 3220
2527 cb = av_shift (av); 3221 cb = av_shift (av);
2528 3222
3223 if (SvTYPE (cb) == SVt_PVCV)
3224 {
3225 dSP;
3226 PUSHMARK (SP);
3227 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3228 PUTBACK;
3229 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3230 }
3231 else
3232 {
2529 api_ready (aTHX_ cb); 3233 api_ready (aTHX_ cb);
2530 sv_setiv (cb, 0); /* signal waiter */ 3234 sv_setiv (cb, 0); /* signal waiter */
3235 }
3236
2531 SvREFCNT_dec (cb); 3237 SvREFCNT_dec_NN (cb);
2532 3238
2533 --count; 3239 --count;
2534 } 3240 }
2535} 3241}
2536 3242
… …
2544static void 3250static void
2545slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3251slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2546{ 3252{
2547 AV *av = (AV *)SvRV (arg [0]); 3253 AV *av = (AV *)SvRV (arg [0]);
2548 3254
3255 if (items >= 2)
3256 {
3257 SV *cb_cv = s_get_cv_croak (arg [1]);
3258 av_push (av, SvREFCNT_inc_NN (cb_cv));
3259
2549 if (SvIVX (AvARRAY (av)[0])) 3260 if (SvIVX (AvARRAY (av)[0]))
3261 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3262
3263 frame->prepare = prepare_nop;
3264 frame->check = slf_check_nop;
3265 }
3266 else if (SvIVX (AvARRAY (av)[0]))
2550 { 3267 {
2551 SvIVX (AvARRAY (av)[0]) = 0; 3268 SvIVX (AvARRAY (av)[0]) = 0;
2552 frame->prepare = prepare_nop; 3269 frame->prepare = prepare_nop;
2553 frame->check = slf_check_nop; 3270 frame->check = slf_check_nop;
2554 } 3271 }
2555 else 3272 else
2556 { 3273 {
2557 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3274 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2558 3275
2559 av_push (av, waiter); 3276 av_push (av, waiter);
2560 3277
2561 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3278 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2562 frame->prepare = prepare_schedule; 3279 frame->prepare = prepare_schedule;
… …
2580 3297
2581static void 3298static void
2582coro_aio_callback (pTHX_ CV *cv) 3299coro_aio_callback (pTHX_ CV *cv)
2583{ 3300{
2584 dXSARGS; 3301 dXSARGS;
2585 AV *state = (AV *)GENSUB_ARG; 3302 AV *state = (AV *)S_GENSUB_ARG;
2586 SV *coro = av_pop (state); 3303 SV *coro = av_pop (state);
2587 SV *data_sv = newSV (sizeof (struct io_state)); 3304 SV *data_sv = newSV (sizeof (struct io_state));
2588 3305
2589 av_extend (state, items - 1); 3306 av_extend (state, items - 1);
2590 3307
… …
2610 } 3327 }
2611 3328
2612 av_push (state, data_sv); 3329 av_push (state, data_sv);
2613 3330
2614 api_ready (aTHX_ coro); 3331 api_ready (aTHX_ coro);
2615 SvREFCNT_dec (coro); 3332 SvREFCNT_dec_NN (coro);
2616 SvREFCNT_dec ((AV *)state); 3333 SvREFCNT_dec_NN ((AV *)state);
2617} 3334}
2618 3335
2619static int 3336static int
2620slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3337slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2621{ 3338{
… …
2626 /* it quickly returns */ 3343 /* it quickly returns */
2627 if (CORO_THROW) 3344 if (CORO_THROW)
2628 return 0; 3345 return 0;
2629 3346
2630 /* one element that is an RV? repeat! */ 3347 /* one element that is an RV? repeat! */
2631 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3348 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2632 return 1; 3349 return 1;
2633 3350
2634 /* restore status */ 3351 /* restore status */
2635 { 3352 {
2636 SV *data_sv = av_pop (state); 3353 SV *data_sv = av_pop (state);
… …
2639 errno = data->errorno; 3356 errno = data->errorno;
2640 PL_laststype = data->laststype; 3357 PL_laststype = data->laststype;
2641 PL_laststatval = data->laststatval; 3358 PL_laststatval = data->laststatval;
2642 PL_statcache = data->statcache; 3359 PL_statcache = data->statcache;
2643 3360
2644 SvREFCNT_dec (data_sv); 3361 SvREFCNT_dec_NN (data_sv);
2645 } 3362 }
2646 3363
2647 /* push result values */ 3364 /* push result values */
2648 { 3365 {
2649 dSP; 3366 dSP;
… …
2675 dSP; 3392 dSP;
2676 3393
2677 static SV *prio_cv; 3394 static SV *prio_cv;
2678 static SV *prio_sv; 3395 static SV *prio_sv;
2679 3396
2680 if (expect_false (!prio_cv)) 3397 if (ecb_expect_false (!prio_cv))
2681 { 3398 {
2682 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3399 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2683 prio_sv = newSViv (0); 3400 prio_sv = newSViv (0);
2684 } 3401 }
2685 3402
… …
2704 3421
2705 for (i = 0; i < items; ++i) 3422 for (i = 0; i < items; ++i)
2706 PUSHs (arg [i]); 3423 PUSHs (arg [i]);
2707 3424
2708 /* now push the callback closure */ 3425 /* now push the callback closure */
2709 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3426 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2710 3427
2711 /* now call the AIO function - we assume our request is uncancelable */ 3428 /* now call the AIO function - we assume our request is uncancelable */
2712 PUTBACK; 3429 PUTBACK;
2713 call_sv ((SV *)req, G_VOID | G_DISCARD); 3430 call_sv ((SV *)req, G_VOID | G_DISCARD);
2714 } 3431 }
2715 3432
2716 /* now that the requets is going, we loop toll we have a result */ 3433 /* now that the request is going, we loop till we have a result */
2717 frame->data = (void *)state; 3434 frame->data = (void *)state;
2718 frame->prepare = prepare_schedule; 3435 frame->prepare = prepare_schedule;
2719 frame->check = slf_check_aio_req; 3436 frame->check = slf_check_aio_req;
2720} 3437}
2721 3438
… …
2733 3450
2734#if CORO_CLONE 3451#if CORO_CLONE
2735# include "clone.c" 3452# include "clone.c"
2736#endif 3453#endif
2737 3454
3455/*****************************************************************************/
3456
3457static SV *
3458coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3459{
3460 SV *coro_sv;
3461 struct coro *coro;
3462 MAGIC *mg;
3463 HV *hv;
3464 SV *cb;
3465 int i;
3466
3467 if (argc > 0)
3468 {
3469 cb = s_get_cv_croak (argv [0]);
3470
3471 if (!is_coro)
3472 {
3473 if (CvISXSUB (cb))
3474 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3475
3476 if (!CvROOT (cb))
3477 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3478 }
3479 }
3480
3481 Newz (0, coro, 1, struct coro);
3482 coro->args = newAV ();
3483 coro->flags = CF_NEW;
3484
3485 if (coro_first) coro_first->prev = coro;
3486 coro->next = coro_first;
3487 coro_first = coro;
3488
3489 coro->hv = hv = newHV ();
3490 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3491 mg->mg_flags |= MGf_DUP;
3492 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3493
3494 if (argc > 0)
3495 {
3496 av_extend (coro->args, argc + is_coro - 1);
3497
3498 if (is_coro)
3499 {
3500 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3501 cb = (SV *)cv_coro_run;
3502 }
3503
3504 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3505
3506 for (i = 1; i < argc; i++)
3507 av_push (coro->args, newSVsv (argv [i]));
3508 }
3509
3510 return coro_sv;
3511}
3512
3513#ifndef __cplusplus
3514ecb_cold XS(boot_Coro__State);
3515#endif
3516
3517#if CORO_JIT
3518
3519static void ecb_noinline ecb_cold
3520pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3521{
3522 dSP;
3523 AV *av = newAV ();
3524
3525 av_store (av, 3, newSVuv (d));
3526 av_store (av, 2, newSVuv (c));
3527 av_store (av, 1, newSVuv (b));
3528 av_store (av, 0, newSVuv (a));
3529
3530 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3531
3532 PUTBACK;
3533}
3534
3535static void ecb_noinline ecb_cold
3536jit_init (pTHX)
3537{
3538 dSP;
3539 SV *load, *save;
3540 char *map_base;
3541 char *load_ptr, *save_ptr;
3542 STRLEN load_len, save_len, map_len;
3543 int count;
3544
3545 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3546
3547 PUSHMARK (SP);
3548 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3549 #include "state.h"
3550 count = call_pv ("Coro::State::_jit", G_ARRAY);
3551 SPAGAIN;
3552
3553 save = POPs; save_ptr = SvPVbyte (save, save_len);
3554 load = POPs; load_ptr = SvPVbyte (load, load_len);
3555
3556 map_len = load_len + save_len + 16;
3557
3558 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3559
3560 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3561
3562 load_perl_slots = (load_save_perl_slots_type)map_base;
3563 memcpy (map_base, load_ptr, load_len);
3564
3565 map_base += (load_len + 15) & ~15;
3566
3567 save_perl_slots = (load_save_perl_slots_type)map_base;
3568 memcpy (map_base, save_ptr, save_len);
3569
3570 /* we are good citizens and try to make the page read-only, so the evil evil */
3571 /* hackers might have it a bit more difficult */
3572 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3573
3574 PUTBACK;
3575 eval_pv ("undef &Coro::State::_jit", 1);
3576}
3577
3578#endif
3579
2738MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3580MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2739 3581
2740PROTOTYPES: DISABLE 3582PROTOTYPES: DISABLE
2741 3583
2742BOOT: 3584BOOT:
2743{ 3585{
3586#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3587#include "state.h"
2744#ifdef USE_ITHREADS 3588#ifdef USE_ITHREADS
2745# if CORO_PTHREAD 3589# if CORO_PTHREAD
2746 coro_thx = PERL_GET_CONTEXT; 3590 coro_thx = PERL_GET_CONTEXT;
2747# endif 3591# endif
2748#endif 3592#endif
2749 BOOT_PAGESIZE; 3593 /* perl defines these to check for existance first, but why it doesn't */
3594 /* just create them one at init time is not clear to me, except for */
3595 /* programs trying to delete them, but... */
3596 /* anyway, we declare this as invalid and make sure they are initialised here */
3597 DEFSV;
3598 ERRSV;
3599
3600 cctx_current = cctx_new_empty ();
2750 3601
2751 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3602 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2752 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3603 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2753 3604
2754 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3605 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2792 coroapi.prepare_nop = prepare_nop; 3643 coroapi.prepare_nop = prepare_nop;
2793 coroapi.prepare_schedule = prepare_schedule; 3644 coroapi.prepare_schedule = prepare_schedule;
2794 coroapi.prepare_cede = prepare_cede; 3645 coroapi.prepare_cede = prepare_cede;
2795 coroapi.prepare_cede_notself = prepare_cede_notself; 3646 coroapi.prepare_cede_notself = prepare_cede_notself;
2796 3647
2797 { 3648 time_init (aTHX);
2798 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2799 3649
2800 if (!svp) croak ("Time::HiRes is required");
2801 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2802
2803 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2804 }
2805
2806 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3650 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3651#if CORO_JIT
3652 PUTBACK;
3653 jit_init (aTHX);
3654 SPAGAIN;
3655#endif
2807} 3656}
2808 3657
2809SV * 3658SV *
2810new (char *klass, ...) 3659new (SV *klass, ...)
2811 ALIAS: 3660 ALIAS:
2812 Coro::new = 1 3661 Coro::new = 1
2813 CODE: 3662 CODE:
2814{ 3663 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2815 struct coro *coro; 3664 OUTPUT:
2816 MAGIC *mg;
2817 HV *hv;
2818 CV *cb;
2819 int i;
2820
2821 if (items > 1)
2822 {
2823 cb = coro_sv_2cv (aTHX_ ST (1));
2824
2825 if (!ix)
2826 {
2827 if (CvISXSUB (cb))
2828 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2829
2830 if (!CvROOT (cb))
2831 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2832 }
2833 }
2834
2835 Newz (0, coro, 1, struct coro);
2836 coro->args = newAV ();
2837 coro->flags = CF_NEW;
2838
2839 if (coro_first) coro_first->prev = coro;
2840 coro->next = coro_first;
2841 coro_first = coro;
2842
2843 coro->hv = hv = newHV ();
2844 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2845 mg->mg_flags |= MGf_DUP;
2846 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2847
2848 if (items > 1)
2849 {
2850 av_extend (coro->args, items - 1 + ix - 1);
2851
2852 if (ix)
2853 {
2854 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2855 cb = cv_coro_run;
2856 }
2857
2858 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2859
2860 for (i = 2; i < items; i++)
2861 av_push (coro->args, newSVsv (ST (i)));
2862 }
2863}
2864 OUTPUT:
2865 RETVAL 3665 RETVAL
2866 3666
2867void 3667void
2868transfer (...) 3668transfer (...)
2869 PROTOTYPE: $$ 3669 PROTOTYPE: $$
2870 CODE: 3670 CODE:
2871 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3671 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2872 3672
2873bool
2874_destroy (SV *coro_sv)
2875 CODE:
2876 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2877 OUTPUT:
2878 RETVAL
2879
2880void
2881_exit (int code)
2882 PROTOTYPE: $
2883 CODE:
2884 _exit (code);
2885
2886#if CORO_CLONE
2887
2888SV * 3673SV *
2889clone (Coro::State coro) 3674clone (Coro::State coro)
2890 CODE: 3675 CODE:
2891{ 3676{
3677#if CORO_CLONE
2892 struct coro *ncoro = coro_clone (coro); 3678 struct coro *ncoro = coro_clone (aTHX_ coro);
2893 MAGIC *mg; 3679 MAGIC *mg;
2894 /* TODO: too much duplication */ 3680 /* TODO: too much duplication */
2895 ncoro->hv = newHV (); 3681 ncoro->hv = newHV ();
2896 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0); 3682 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2897 mg->mg_flags |= MGf_DUP; 3683 mg->mg_flags |= MGf_DUP;
2898 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv)); 3684 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3685#else
3686 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3687#endif
2899} 3688}
2900 OUTPUT: 3689 OUTPUT:
2901 RETVAL 3690 RETVAL
2902
2903#endif
2904 3691
2905int 3692int
2906cctx_stacksize (int new_stacksize = 0) 3693cctx_stacksize (int new_stacksize = 0)
2907 PROTOTYPE: ;$ 3694 PROTOTYPE: ;$
2908 CODE: 3695 CODE:
… …
2944void 3731void
2945list () 3732list ()
2946 PROTOTYPE: 3733 PROTOTYPE:
2947 PPCODE: 3734 PPCODE:
2948{ 3735{
2949 struct coro *coro; 3736 struct coro *coro;
2950 for (coro = coro_first; coro; coro = coro->next) 3737 for (coro = coro_first; coro; coro = coro->next)
2951 if (coro->hv) 3738 if (coro->hv)
2952 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3739 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2953} 3740}
2954 3741
… …
2958 eval = 1 3745 eval = 1
2959 CODE: 3746 CODE:
2960{ 3747{
2961 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3748 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2962 { 3749 {
2963 struct coro temp; 3750 struct coro *current = SvSTATE_current;
3751 struct CoroSLF slf_save;
2964 3752
2965 if (!(coro->flags & CF_RUNNING)) 3753 if (current != coro)
2966 { 3754 {
2967 PUTBACK; 3755 PUTBACK;
2968 save_perl (aTHX_ &temp); 3756 save_perl (aTHX_ current);
2969 load_perl (aTHX_ coro); 3757 load_perl (aTHX_ coro);
3758 /* the coro is most likely in an active SLF call.
3759 * while not strictly required (the code we execute is
3760 * not allowed to call any SLF functions), it's cleaner
3761 * to reinitialise the slf_frame and restore it later.
3762 * This might one day allow us to actually do SLF calls
3763 * from code executed here.
3764 */
3765 slf_save = slf_frame;
3766 slf_frame.prepare = 0;
3767 SPAGAIN;
2970 } 3768 }
2971 3769
2972 {
2973 dSP;
2974 ENTER;
2975 SAVETMPS;
2976 PUTBACK;
2977 PUSHSTACK; 3770 PUSHSTACK;
3771
2978 PUSHMARK (SP); 3772 PUSHMARK (SP);
3773 PUTBACK;
2979 3774
2980 if (ix) 3775 if (ix)
2981 eval_sv (coderef, 0); 3776 eval_sv (coderef, 0);
2982 else 3777 else
2983 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3778 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2984 3779
2985 POPSTACK; 3780 POPSTACK;
2986 SPAGAIN; 3781 SPAGAIN;
2987 FREETMPS;
2988 LEAVE;
2989 PUTBACK;
2990 }
2991 3782
2992 if (!(coro->flags & CF_RUNNING)) 3783 if (current != coro)
2993 { 3784 {
3785 PUTBACK;
3786 slf_frame = slf_save;
2994 save_perl (aTHX_ coro); 3787 save_perl (aTHX_ coro);
2995 load_perl (aTHX_ &temp); 3788 load_perl (aTHX_ current);
2996 SPAGAIN; 3789 SPAGAIN;
2997 } 3790 }
2998 } 3791 }
2999} 3792}
3000 3793
… …
3003 PROTOTYPE: $ 3796 PROTOTYPE: $
3004 ALIAS: 3797 ALIAS:
3005 is_ready = CF_READY 3798 is_ready = CF_READY
3006 is_running = CF_RUNNING 3799 is_running = CF_RUNNING
3007 is_new = CF_NEW 3800 is_new = CF_NEW
3008 is_destroyed = CF_DESTROYED 3801 is_destroyed = CF_ZOMBIE
3802 is_zombie = CF_ZOMBIE
3803 is_suspended = CF_SUSPENDED
3009 CODE: 3804 CODE:
3010 RETVAL = boolSV (coro->flags & ix); 3805 RETVAL = boolSV (coro->flags & ix);
3011 OUTPUT: 3806 OUTPUT:
3012 RETVAL 3807 RETVAL
3013 3808
3014void 3809void
3015throw (Coro::State self, SV *throw = &PL_sv_undef) 3810throw (SV *self, SV *exception = &PL_sv_undef)
3016 PROTOTYPE: $;$ 3811 PROTOTYPE: $;$
3017 CODE: 3812 CODE:
3018{ 3813{
3814 struct coro *coro = SvSTATE (self);
3019 struct coro *current = SvSTATE_current; 3815 struct coro *current = SvSTATE_current;
3020 SV **throwp = self == current ? &CORO_THROW : &self->except; 3816 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
3021 SvREFCNT_dec (*throwp); 3817 SvREFCNT_dec (*exceptionp);
3022 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3818 SvGETMAGIC (exception);
3819 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3820
3821 api_ready (aTHX_ self);
3023} 3822}
3024 3823
3025void 3824void
3026api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3825api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3027 PROTOTYPE: $;$ 3826 PROTOTYPE: $;$
… …
3029 3828
3030SV * 3829SV *
3031has_cctx (Coro::State coro) 3830has_cctx (Coro::State coro)
3032 PROTOTYPE: $ 3831 PROTOTYPE: $
3033 CODE: 3832 CODE:
3034 RETVAL = boolSV (!!coro->cctx); 3833 /* maybe manage the running flag differently */
3834 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
3035 OUTPUT: 3835 OUTPUT:
3036 RETVAL 3836 RETVAL
3037 3837
3038int 3838int
3039is_traced (Coro::State coro) 3839is_traced (Coro::State coro)
… …
3059 3859
3060void 3860void
3061force_cctx () 3861force_cctx ()
3062 PROTOTYPE: 3862 PROTOTYPE:
3063 CODE: 3863 CODE:
3064 SvSTATE_current->cctx->idle_sp = 0; 3864 cctx_current->idle_sp = 0;
3065 3865
3066void 3866void
3067swap_defsv (Coro::State self) 3867swap_defsv (Coro::State self)
3068 PROTOTYPE: $ 3868 PROTOTYPE: $
3069 ALIAS: 3869 ALIAS:
… …
3077 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3877 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3078 3878
3079 SV *tmp = *src; *src = *dst; *dst = tmp; 3879 SV *tmp = *src; *src = *dst; *dst = tmp;
3080 } 3880 }
3081 3881
3882void
3883cancel (Coro::State self)
3884 CODE:
3885 coro_state_destroy (aTHX_ self);
3886
3887SV *
3888enable_times (int enabled = enable_times)
3889 CODE:
3890{
3891 RETVAL = boolSV (enable_times);
3892
3893 if (enabled != enable_times)
3894 {
3895 enable_times = enabled;
3896
3897 coro_times_update ();
3898 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3899 }
3900}
3901 OUTPUT:
3902 RETVAL
3903
3904void
3905times (Coro::State self)
3906 PPCODE:
3907{
3908 struct coro *current = SvSTATE (coro_current);
3909
3910 if (ecb_expect_false (current == self))
3911 {
3912 coro_times_update ();
3913 coro_times_add (SvSTATE (coro_current));
3914 }
3915
3916 EXTEND (SP, 2);
3917 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3918 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3919
3920 if (ecb_expect_false (current == self))
3921 coro_times_sub (SvSTATE (coro_current));
3922}
3923
3924void
3925swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3926 CODE:
3927{
3928 struct coro *current = SvSTATE_current;
3929
3930 if (current == coro)
3931 SWAP_SVS (current);
3932
3933 if (!coro->swap_sv)
3934 coro->swap_sv = newAV ();
3935
3936 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3937 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3938
3939 if (current == coro)
3940 SWAP_SVS (current);
3941}
3942
3082 3943
3083MODULE = Coro::State PACKAGE = Coro 3944MODULE = Coro::State PACKAGE = Coro
3084 3945
3085BOOT: 3946BOOT:
3086{ 3947{
3087 int i; 3948 if (SVt_LAST > 32)
3949 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
3088 3950
3089 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3951 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3090 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3952 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3091 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD); 3953 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3092 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3093 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); 3954 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3094 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3955 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3095 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); 3956 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3096 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); 3957 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3958 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3097 3959
3098 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 3960 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3099 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 3961 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3100 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); 3962 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3101 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new); 3963 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3102 3964
3103 coro_stash = gv_stashpv ("Coro", TRUE); 3965 coro_stash = gv_stashpv ("Coro", TRUE);
3104 3966
3105 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3967 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3106 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3968 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3107 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3969 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
3108 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3970 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
3109 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3971 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
3110 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3972 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
3111
3112 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
3113 coro_ready[i] = newAV ();
3114 3973
3115 { 3974 {
3116 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3975 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
3117 3976
3118 coroapi.schedule = api_schedule; 3977 coroapi.schedule = api_schedule;
… …
3122 coroapi.ready = api_ready; 3981 coroapi.ready = api_ready;
3123 coroapi.is_ready = api_is_ready; 3982 coroapi.is_ready = api_is_ready;
3124 coroapi.nready = coro_nready; 3983 coroapi.nready = coro_nready;
3125 coroapi.current = coro_current; 3984 coroapi.current = coro_current;
3126 3985
3986 coroapi.enterleave_hook = api_enterleave_hook;
3987 coroapi.enterleave_unhook = api_enterleave_unhook;
3988 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
3989
3127 /*GCoroAPI = &coroapi;*/ 3990 /*GCoroAPI = &coroapi;*/
3128 sv_setiv (sv, (IV)&coroapi); 3991 sv_setiv (sv, (IV)&coroapi);
3129 SvREADONLY_on (sv); 3992 SvREADONLY_on (sv);
3130 } 3993 }
3131} 3994}
3132 3995
3996SV *
3997async (...)
3998 PROTOTYPE: &@
3999 CODE:
4000 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4001 api_ready (aTHX_ RETVAL);
4002 OUTPUT:
4003 RETVAL
4004
4005void
4006_destroy (Coro::State coro)
4007 CODE:
4008 /* used by the manager thread */
4009 coro_state_destroy (aTHX_ coro);
4010
4011void
4012on_destroy (Coro::State coro, SV *cb)
4013 CODE:
4014 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4015
4016void
4017join (...)
4018 CODE:
4019 CORO_EXECUTE_SLF_XS (slf_init_join);
4020
3133void 4021void
3134terminate (...) 4022terminate (...)
3135 CODE: 4023 CODE:
3136 CORO_EXECUTE_SLF_XS (slf_init_terminate); 4024 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3137 4025
3138void 4026void
4027cancel (...)
4028 CODE:
4029 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4030
4031int
4032safe_cancel (Coro::State self, ...)
4033 C_ARGS: aTHX_ self, &ST (1), items - 1
4034
4035void
3139schedule (...) 4036schedule (...)
3140 CODE: 4037 CODE:
3141 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4038 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3142 4039
3143void 4040void
… …
3159cede_notself (...) 4056cede_notself (...)
3160 CODE: 4057 CODE:
3161 CORO_EXECUTE_SLF_XS (slf_init_cede_notself); 4058 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3162 4059
3163void 4060void
3164_cancel (Coro::State self)
3165 CODE:
3166 coro_state_destroy (aTHX_ self);
3167 coro_call_on_destroy (aTHX_ self);
3168
3169void
3170_set_current (SV *current) 4061_set_current (SV *current)
3171 PROTOTYPE: $ 4062 PROTOTYPE: $
3172 CODE: 4063 CODE:
3173 SvREFCNT_dec (SvRV (coro_current)); 4064 SvREFCNT_dec_NN (SvRV (coro_current));
3174 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4065 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3175 4066
3176void 4067void
3177_set_readyhook (SV *hook) 4068_set_readyhook (SV *hook)
3178 PROTOTYPE: $ 4069 PROTOTYPE: $
3179 CODE: 4070 CODE:
3180 SvREFCNT_dec (coro_readyhook); 4071 SvREFCNT_dec (coro_readyhook);
4072 SvGETMAGIC (hook);
4073 if (SvOK (hook))
4074 {
3181 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4075 coro_readyhook = newSVsv (hook);
4076 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4077 }
4078 else
4079 {
4080 coro_readyhook = 0;
4081 CORO_READYHOOK = 0;
4082 }
3182 4083
3183int 4084int
3184prio (Coro::State coro, int newprio = 0) 4085prio (Coro::State coro, int newprio = 0)
3185 PROTOTYPE: $;$ 4086 PROTOTYPE: $;$
3186 ALIAS: 4087 ALIAS:
… …
3192 if (items > 1) 4093 if (items > 1)
3193 { 4094 {
3194 if (ix) 4095 if (ix)
3195 newprio = coro->prio - newprio; 4096 newprio = coro->prio - newprio;
3196 4097
3197 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4098 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3198 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4099 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3199 4100
3200 coro->prio = newprio; 4101 coro->prio = newprio;
3201 } 4102 }
3202} 4103}
3203 OUTPUT: 4104 OUTPUT:
… …
3218 RETVAL = coro_nready; 4119 RETVAL = coro_nready;
3219 OUTPUT: 4120 OUTPUT:
3220 RETVAL 4121 RETVAL
3221 4122
3222void 4123void
4124suspend (Coro::State self)
4125 PROTOTYPE: $
4126 CODE:
4127 self->flags |= CF_SUSPENDED;
4128
4129void
4130resume (Coro::State self)
4131 PROTOTYPE: $
4132 CODE:
4133 self->flags &= ~CF_SUSPENDED;
4134
4135void
3223_pool_handler (...) 4136_pool_handler (...)
3224 CODE: 4137 CODE:
3225 CORO_EXECUTE_SLF_XS (slf_init_pool_handler); 4138 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3226 4139
3227void 4140void
… …
3238 for (i = 1; i < items; ++i) 4151 for (i = 1; i < items; ++i)
3239 av_push (av, SvREFCNT_inc_NN (ST (i))); 4152 av_push (av, SvREFCNT_inc_NN (ST (i)));
3240 4153
3241 if ((SV *)hv == &PL_sv_undef) 4154 if ((SV *)hv == &PL_sv_undef)
3242 { 4155 {
3243 PUSHMARK (SP); 4156 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3244 EXTEND (SP, 2);
3245 PUSHs (sv_Coro);
3246 PUSHs ((SV *)cv_pool_handler);
3247 PUTBACK;
3248 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3249 SPAGAIN;
3250
3251 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); 4157 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
4158 SvREFCNT_dec_NN (sv);
3252 } 4159 }
3253 4160
3254 { 4161 {
3255 struct coro *coro = SvSTATE_hv (hv); 4162 struct coro *coro = SvSTATE_hv (hv);
3256 4163
… …
3263 api_ready (aTHX_ (SV *)hv); 4170 api_ready (aTHX_ (SV *)hv);
3264 4171
3265 if (GIMME_V != G_VOID) 4172 if (GIMME_V != G_VOID)
3266 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); 4173 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3267 else 4174 else
3268 SvREFCNT_dec (hv); 4175 SvREFCNT_dec_NN (hv);
3269} 4176}
3270 4177
3271SV * 4178SV *
3272rouse_cb () 4179rouse_cb ()
3273 PROTOTYPE: 4180 PROTOTYPE:
… …
3280rouse_wait (...) 4187rouse_wait (...)
3281 PROTOTYPE: ;$ 4188 PROTOTYPE: ;$
3282 PPCODE: 4189 PPCODE:
3283 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4190 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3284 4191
4192void
4193on_enter (SV *block)
4194 ALIAS:
4195 on_leave = 1
4196 PROTOTYPE: &
4197 CODE:
4198{
4199 struct coro *coro = SvSTATE_current;
4200 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4201
4202 block = s_get_cv_croak (block);
4203
4204 if (!*avp)
4205 *avp = newAV ();
4206
4207 av_push (*avp, SvREFCNT_inc (block));
4208
4209 if (!ix)
4210 on_enterleave_call (aTHX_ block);
4211
4212 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4213 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4214 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4215}
4216
3285 4217
3286MODULE = Coro::State PACKAGE = PerlIO::cede 4218MODULE = Coro::State PACKAGE = PerlIO::cede
3287 4219
3288BOOT: 4220BOOT:
3289 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4221 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3292MODULE = Coro::State PACKAGE = Coro::Semaphore 4224MODULE = Coro::State PACKAGE = Coro::Semaphore
3293 4225
3294SV * 4226SV *
3295new (SV *klass, SV *count = 0) 4227new (SV *klass, SV *count = 0)
3296 CODE: 4228 CODE:
4229{
4230 int semcnt = 1;
4231
4232 if (count)
4233 {
4234 SvGETMAGIC (count);
4235
4236 if (SvOK (count))
4237 semcnt = SvIV (count);
4238 }
4239
3297 RETVAL = sv_bless ( 4240 RETVAL = sv_bless (
3298 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4241 coro_waitarray_new (aTHX_ semcnt),
3299 GvSTASH (CvGV (cv)) 4242 GvSTASH (CvGV (cv))
3300 ); 4243 );
4244}
3301 OUTPUT: 4245 OUTPUT:
3302 RETVAL 4246 RETVAL
3303 4247
3304# helper for Coro::Channel 4248# helper for Coro::Channel and others
3305SV * 4249SV *
3306_alloc (int count) 4250_alloc (int count)
3307 CODE: 4251 CODE:
3308 RETVAL = coro_waitarray_new (aTHX_ count); 4252 RETVAL = coro_waitarray_new (aTHX_ count);
3309 OUTPUT: 4253 OUTPUT:
… …
3351 XSRETURN_NO; 4295 XSRETURN_NO;
3352} 4296}
3353 4297
3354void 4298void
3355waiters (SV *self) 4299waiters (SV *self)
3356 PPCODE: 4300 PPCODE:
3357{ 4301{
3358 AV *av = (AV *)SvRV (self); 4302 AV *av = (AV *)SvRV (self);
3359 int wcount = AvFILLp (av) + 1 - 1; 4303 int wcount = AvFILLp (av) + 1 - 1;
3360 4304
3361 if (GIMME_V == G_SCALAR) 4305 if (GIMME_V == G_SCALAR)
… …
3367 for (i = 1; i <= wcount; ++i) 4311 for (i = 1; i <= wcount; ++i)
3368 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4312 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3369 } 4313 }
3370} 4314}
3371 4315
4316MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4317
4318void
4319_may_delete (SV *sem, int count, unsigned int extra_refs)
4320 PPCODE:
4321{
4322 AV *av = (AV *)SvRV (sem);
4323
4324 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4325 && AvFILLp (av) == 0 /* no waiters, just count */
4326 && SvIV (AvARRAY (av)[0]) == count)
4327 XSRETURN_YES;
4328
4329 XSRETURN_NO;
4330}
4331
3372MODULE = Coro::State PACKAGE = Coro::Signal 4332MODULE = Coro::State PACKAGE = Coro::Signal
3373 4333
3374SV * 4334SV *
3375new (SV *klass) 4335new (SV *klass)
3376 CODE: 4336 CODE:
… …
3388 4348
3389void 4349void
3390broadcast (SV *self) 4350broadcast (SV *self)
3391 CODE: 4351 CODE:
3392{ 4352{
3393 AV *av = (AV *)SvRV (self); 4353 AV *av = (AV *)SvRV (self);
3394 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4354 coro_signal_wake (aTHX_ av, AvFILLp (av));
3395} 4355}
3396 4356
3397void 4357void
3398send (SV *self) 4358send (SV *self)
… …
3406 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4366 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3407} 4367}
3408 4368
3409IV 4369IV
3410awaited (SV *self) 4370awaited (SV *self)
3411 CODE: 4371 CODE:
3412 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4372 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3413 OUTPUT: 4373 OUTPUT:
3414 RETVAL 4374 RETVAL
3415 4375
3416 4376
… …
3421 4381
3422void 4382void
3423_schedule (...) 4383_schedule (...)
3424 CODE: 4384 CODE:
3425{ 4385{
3426 static int incede; 4386 static int incede;
3427 4387
3428 api_cede_notself (aTHX); 4388 api_cede_notself (aTHX);
3429 4389
3430 ++incede; 4390 ++incede;
3431 while (coro_nready >= incede && api_cede (aTHX)) 4391 while (coro_nready >= incede && api_cede (aTHX))
… …
3447 4407
3448void 4408void
3449_register (char *target, char *proto, SV *req) 4409_register (char *target, char *proto, SV *req)
3450 CODE: 4410 CODE:
3451{ 4411{
3452 CV *req_cv = coro_sv_2cv (aTHX_ req); 4412 SV *req_cv = s_get_cv_croak (req);
3453 /* newXSproto doesn't return the CV on 5.8 */ 4413 /* newXSproto doesn't return the CV on 5.8 */
3454 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4414 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3455 sv_setpv ((SV *)slf_cv, proto); 4415 sv_setpv ((SV *)slf_cv, proto);
3456 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4416 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3457} 4417}
3458 4418
4419MODULE = Coro::State PACKAGE = Coro::Select
4420
4421void
4422patch_pp_sselect ()
4423 CODE:
4424 if (!coro_old_pp_sselect)
4425 {
4426 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4427 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4428 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4429 }
4430
4431void
4432unpatch_pp_sselect ()
4433 CODE:
4434 if (coro_old_pp_sselect)
4435 {
4436 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4437 coro_old_pp_sselect = 0;
4438 }
4439
4440MODULE = Coro::State PACKAGE = Coro::Util
4441
4442void
4443_exit (int code)
4444 CODE:
4445 _exit (code);
4446
4447NV
4448time ()
4449 CODE:
4450 RETVAL = nvtime (aTHX);
4451 OUTPUT:
4452 RETVAL
4453
4454NV
4455gettimeofday ()
4456 PPCODE:
4457{
4458 UV tv [2];
4459 u2time (aTHX_ tv);
4460 EXTEND (SP, 2);
4461 PUSHs (sv_2mortal (newSVuv (tv [0])));
4462 PUSHs (sv_2mortal (newSVuv (tv [1])));
4463}
4464

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