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Comparing Coro/Coro/State.xs (file contents):
Revision 1.310 by root, Wed Nov 19 16:01:32 2008 UTC vs.
Revision 1.449 by root, Sun Jun 21 17:02:49 2015 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SVs_PADSTALE
28# define SVs_PADSTALE 0
29#endif
30
31#ifdef PadARRAY
32# define NEWPADAPI 1
33# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
34#else
35typedef AV PADNAMELIST;
36# if !PERL_VERSION_ATLEAST(5,8,0)
37typedef AV PADLIST;
38typedef AV PAD;
39# endif
40# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
41# define PadlistMAX(pl) AvFILLp (pl)
42# define PadlistNAMES(pl) (*PadlistARRAY (pl))
43# define PadARRAY AvARRAY
44# define PadMAX AvFILLp
45# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
46#endif
47#ifndef PadnamelistREFCNT
48# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
49#endif
50#ifndef PadnamelistREFCNT_dec
51# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
52#endif
53
54/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
55/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
56#if PERL_VERSION_ATLEAST(5,19,0)
57# define SVt_BIND SVt_IV
58#endif
59
60#if defined(_WIN32)
61# undef HAS_GETTIMEOFDAY
18# undef setjmp 62# undef setjmp
19# undef longjmp 63# undef longjmp
20# undef _exit 64# undef _exit
21# define setjmp _setjmp /* deep magic */ 65# define setjmp _setjmp /* deep magic */
22#else 66#else
23# include <inttypes.h> /* most portable stdint.h */ 67# include <inttypes.h> /* most portable stdint.h */
24#endif 68#endif
25 69
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 70/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 71static int cctx_max_idle = 4;
55 72
56#define PERL_VERSION_ATLEAST(a,b,c) \ 73#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 74# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD
111#endif
112
113#ifndef CORO_STACKGUARD
114# define CORO_STACKGUARD 0
115#endif 75#endif
116 76
117/* prefer perl internal functions over our own? */ 77/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 78#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 79# define CORO_PREFER_PERL_FUNCTIONS 0
… …
127#else 87#else
128# define dSTACKLEVEL volatile void *stacklevel 88# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 89# define STACKLEVEL ((void *)&stacklevel)
130#endif 90#endif
131 91
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 92#define IN_DESTRUCT PL_dirty
133
134#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
138#else
139# define attribute(x)
140# define expect(expr,value) (expr)
141# define INLINE static
142#endif
143
144#define expect_false(expr) expect ((expr) != 0, 0)
145#define expect_true(expr) expect ((expr) != 0, 1)
146
147#define NOINLINE attribute ((noinline))
148 93
149#include "CoroAPI.h" 94#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */ 95#define GCoroAPI (&coroapi) /* very sneaky */
151 96
152#ifdef USE_ITHREADS 97#ifdef USE_ITHREADS
153# if CORO_PTHREAD 98# if CORO_PTHREAD
154static void *coro_thx; 99static void *coro_thx;
155# endif 100# endif
156#endif 101#endif
157 102
103#ifdef __linux
104# include <time.h> /* for timespec */
105# include <syscall.h> /* for SYS_* */
106# ifdef SYS_clock_gettime
107# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
108# define CORO_CLOCK_MONOTONIC 1
109# define CORO_CLOCK_THREAD_CPUTIME_ID 3
110# endif
111#endif
112
158static double (*nvtime)(); /* so why doesn't it take void? */ 113static double (*nvtime)(); /* so why doesn't it take void? */
114static void (*u2time)(pTHX_ UV ret[2]);
159 115
160/* we hijack an hopefully unused CV flag for our purposes */ 116/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 117#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 118static OP *pp_slf (pTHX);
119static void slf_destroy (pTHX_ struct coro *coro);
163 120
164static U32 cctx_gen; 121static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 122static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 123static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 124static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 125static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 126static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 127static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 128
129static AV *av_destroy; /* destruction queue */
130static SV *sv_manager; /* the manager coro */
131static SV *sv_idle; /* $Coro::idle */
132
172static GV *irsgv; /* $/ */ 133static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 134static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 135static SV *rv_diehook;
175static SV *rv_warnhook; 136static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 137static HV *hv_sig; /* %SIG */
177 138
178/* async_pool helper stuff */ 139/* async_pool helper stuff */
179static SV *sv_pool_rss; 140static SV *sv_pool_rss;
180static SV *sv_pool_size; 141static SV *sv_pool_size;
142static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 143static AV *av_async_pool; /* idle pool */
144static SV *sv_Coro; /* class string */
145static CV *cv_pool_handler;
182 146
183/* Coro::AnyEvent */ 147/* Coro::AnyEvent */
184static SV *sv_activity; 148static SV *sv_activity;
185 149
150/* enable processtime/realtime profiling */
151static char enable_times;
152typedef U32 coro_ts[2];
153static coro_ts time_real, time_cpu;
154static char times_valid;
155
186static struct coro_cctx *cctx_first; 156static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 157static int cctx_count, cctx_idle;
188 158
189enum { 159enum
160{
190 CC_MAPPED = 0x01, 161 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 162 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 163 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 164 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 165 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
199typedef struct coro_cctx 170typedef struct coro_cctx
200{ 171{
201 struct coro_cctx *next; 172 struct coro_cctx *next;
202 173
203 /* the stack */ 174 /* the stack */
204 void *sptr; 175 struct coro_stack stack;
205 size_t ssize;
206 176
207 /* cpu state */ 177 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 178 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
179#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 180 JMPENV *idle_te; /* same as idle_sp, but for top_env */
181#endif
210 JMPENV *top_env; 182 JMPENV *top_env;
211 coro_context cctx; 183 coro_context cctx;
212 184
213 U32 gen; 185 U32 gen;
214#if CORO_USE_VALGRIND 186#if CORO_USE_VALGRIND
215 int valgrind_id; 187 int valgrind_id;
216#endif 188#endif
217 unsigned char flags; 189 unsigned char flags;
218} coro_cctx; 190} coro_cctx;
219 191
192static coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
196static MGVTBL coro_state_vtbl;
197
220enum { 198enum
199{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 200 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 201 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 202 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 203 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
204 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
205 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 206};
226 207
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 208/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 209typedef struct
229{ 210{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 211 #define VARx(name,expr,type) type name;
235# include "state.h" 212 #include "state.h"
236#undef VAR
237} perl_slots; 213} perl_slots;
238 214
215/* how many context stack entries do we need for perl_slots */
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 216#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 217
241/* this is a structure representing a perl-level coroutine */ 218/* this is a structure representing a perl-level coroutine */
242struct coro { 219struct coro
220{
243 /* the C coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 222 coro_cctx *cctx;
223
224 /* ready queue */
225 struct coro *next_ready;
245 226
246 /* state data */ 227 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 228 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 229 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
250 231
251 CV *startcv; /* the CV to execute */ 232 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 234 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 235 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
257 236
258 /* statistics */ 237 /* statistics */
259 int usecount; /* number of transfers to this coro */ 238 int usecount; /* number of transfers to this coro */
260 239
261 /* coro process data */ 240 /* coro process data */
262 int prio; 241 int prio;
263 SV *except; /* exception to be thrown */ 242 SV *except; /* exception to be thrown */
264 SV *rouse_cb; 243 SV *rouse_cb; /* last rouse callback */
244 AV *on_destroy; /* callbacks or coros to notify on destroy */
245 AV *status; /* the exit status list */
265 246
266 /* async_pool */ 247 /* async_pool */
267 SV *saved_deffh; 248 SV *saved_deffh;
249 SV *invoke_cb;
250 AV *invoke_av;
251
252 /* on_enter/on_leave */
253 AV *on_enter;
254 AV *on_leave;
255
256 /* swap_sv */
257 AV *swap_sv;
258
259 /* times */
260 coro_ts t_cpu, t_real;
268 261
269 /* linked list */ 262 /* linked list */
270 struct coro *next, *prev; 263 struct coro *next, *prev;
271}; 264};
272 265
273typedef struct coro *Coro__State; 266typedef struct coro *Coro__State;
274typedef struct coro *Coro__State_or_hashref; 267typedef struct coro *Coro__State_or_hashref;
275 268
276/* the following variables are effectively part of the perl context */ 269/* the following variables are effectively part of the perl context */
277/* and get copied between struct coro and these variables */ 270/* and get copied between struct coro and these variables */
278/* the mainr easonw e don't support windows process emulation */ 271/* the main reason we don't support windows process emulation */
279static struct CoroSLF slf_frame; /* the current slf frame */ 272static struct CoroSLF slf_frame; /* the current slf frame */
280 273
281/** Coro ********************************************************************/ 274/** Coro ********************************************************************/
282 275
283#define PRIO_MAX 3 276#define CORO_PRIO_MAX 3
284#define PRIO_HIGH 1 277#define CORO_PRIO_HIGH 1
285#define PRIO_NORMAL 0 278#define CORO_PRIO_NORMAL 0
286#define PRIO_LOW -1 279#define CORO_PRIO_LOW -1
287#define PRIO_IDLE -3 280#define CORO_PRIO_IDLE -3
288#define PRIO_MIN -4 281#define CORO_PRIO_MIN -4
289 282
290/* for Coro.pm */ 283/* for Coro.pm */
291static SV *coro_current; 284static SV *coro_current;
292static SV *coro_readyhook; 285static SV *coro_readyhook;
293static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 286static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
294static CV *cv_coro_run; 287static CV *cv_coro_run;
295static struct coro *coro_first; 288static struct coro *coro_first;
296#define coro_nready coroapi.nready 289#define coro_nready coroapi.nready
297 290
291/** JIT *********************************************************************/
292
293#if CORO_JIT
294 /* APPLE doesn't have mmap though */
295 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
296 #ifndef CORO_JIT_TYPE
297 #if ECB_AMD64 && CORO_JIT_UNIXY
298 #define CORO_JIT_TYPE "amd64-unix"
299 #elif __i386 && CORO_JIT_UNIXY
300 #define CORO_JIT_TYPE "x86-unix"
301 #endif
302 #endif
303#endif
304
305#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
306 #undef CORO_JIT
307#endif
308
309#if CORO_JIT
310 typedef void (*load_save_perl_slots_type)(perl_slots *);
311 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
312#endif
313
314/** Coro::Select ************************************************************/
315
316static OP *(*coro_old_pp_sselect) (pTHX);
317static SV *coro_select_select;
318
319/* horrible hack, but if it works... */
320static OP *
321coro_pp_sselect (pTHX)
322{
323 dSP;
324 PUSHMARK (SP - 4); /* fake argument list */
325 XPUSHs (coro_select_select);
326 PUTBACK;
327
328 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
329 PL_op->op_flags |= OPf_STACKED;
330 PL_op->op_private = 0;
331 return PL_ppaddr [OP_ENTERSUB](aTHX);
332}
333
334/** time stuff **************************************************************/
335
336#ifdef HAS_GETTIMEOFDAY
337
338ecb_inline void
339coro_u2time (pTHX_ UV ret[2])
340{
341 struct timeval tv;
342 gettimeofday (&tv, 0);
343
344 ret [0] = tv.tv_sec;
345 ret [1] = tv.tv_usec;
346}
347
348ecb_inline double
349coro_nvtime (void)
350{
351 struct timeval tv;
352 gettimeofday (&tv, 0);
353
354 return tv.tv_sec + tv.tv_usec * 1e-6;
355}
356
357ecb_inline void
358time_init (pTHX)
359{
360 nvtime = coro_nvtime;
361 u2time = coro_u2time;
362}
363
364#else
365
366ecb_inline void
367time_init (pTHX)
368{
369 SV **svp;
370
371 require_pv ("Time/HiRes.pm");
372
373 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
374
375 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
376 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
377
378 nvtime = INT2PTR (double (*)(), SvIV (*svp));
379
380 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
381 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
382}
383
384#endif
385
298/** lowlevel stuff **********************************************************/ 386/** lowlevel stuff **********************************************************/
299 387
300static SV * 388static SV * ecb_noinline
301coro_get_sv (pTHX_ const char *name, int create) 389coro_get_sv (pTHX_ const char *name, int create)
302{ 390{
303#if PERL_VERSION_ATLEAST (5,10,0) 391#if PERL_VERSION_ATLEAST (5,10,0)
304 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 392 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
305 get_sv (name, create); 393 get_sv (name, create);
306#endif 394#endif
307 return get_sv (name, create); 395 return get_sv (name, create);
308} 396}
309 397
310static AV * 398static AV * ecb_noinline
311coro_get_av (pTHX_ const char *name, int create) 399coro_get_av (pTHX_ const char *name, int create)
312{ 400{
313#if PERL_VERSION_ATLEAST (5,10,0) 401#if PERL_VERSION_ATLEAST (5,10,0)
314 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 402 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
315 get_av (name, create); 403 get_av (name, create);
316#endif 404#endif
317 return get_av (name, create); 405 return get_av (name, create);
318} 406}
319 407
320static HV * 408static HV * ecb_noinline
321coro_get_hv (pTHX_ const char *name, int create) 409coro_get_hv (pTHX_ const char *name, int create)
322{ 410{
323#if PERL_VERSION_ATLEAST (5,10,0) 411#if PERL_VERSION_ATLEAST (5,10,0)
324 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 412 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
325 get_hv (name, create); 413 get_hv (name, create);
326#endif 414#endif
327 return get_hv (name, create); 415 return get_hv (name, create);
328} 416}
329 417
330/* may croak */ 418ecb_inline void
331INLINE CV * 419coro_times_update (void)
332coro_sv_2cv (SV *sv)
333{ 420{
334 HV *st; 421#ifdef coro_clock_gettime
335 GV *gvp; 422 struct timespec ts;
336 return sv_2cv (sv, &st, &gvp, 0);
337}
338 423
339static AV * 424 ts.tv_sec = ts.tv_nsec = 0;
425 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
426 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
427
428 ts.tv_sec = ts.tv_nsec = 0;
429 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
430 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
431#else
432 dTHX;
433 UV tv[2];
434
435 u2time (aTHX_ tv);
436 time_real [0] = tv [0];
437 time_real [1] = tv [1] * 1000;
438#endif
439}
440
441ecb_inline void
442coro_times_add (struct coro *c)
443{
444 c->t_real [1] += time_real [1];
445 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
446 c->t_real [0] += time_real [0];
447
448 c->t_cpu [1] += time_cpu [1];
449 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
450 c->t_cpu [0] += time_cpu [0];
451}
452
453ecb_inline void
454coro_times_sub (struct coro *c)
455{
456 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
457 c->t_real [1] -= time_real [1];
458 c->t_real [0] -= time_real [0];
459
460 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
461 c->t_cpu [1] -= time_cpu [1];
462 c->t_cpu [0] -= time_cpu [0];
463}
464
465/*****************************************************************************/
466/* magic glue */
467
468#define CORO_MAGIC_type_cv 26
469#define CORO_MAGIC_type_state PERL_MAGIC_ext
470
471#define CORO_MAGIC_NN(sv, type) \
472 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
473 ? SvMAGIC (sv) \
474 : mg_find (sv, type))
475
476#define CORO_MAGIC(sv, type) \
477 (ecb_expect_true (SvMAGIC (sv)) \
478 ? CORO_MAGIC_NN (sv, type) \
479 : 0)
480
481#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
482#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
483
484ecb_inline MAGIC *
485SvSTATEhv_p (pTHX_ SV *coro)
486{
487 MAGIC *mg;
488
489 if (ecb_expect_true (
490 SvTYPE (coro) == SVt_PVHV
491 && (mg = CORO_MAGIC_state (coro))
492 && mg->mg_virtual == &coro_state_vtbl
493 ))
494 return mg;
495
496 return 0;
497}
498
499ecb_inline struct coro *
500SvSTATE_ (pTHX_ SV *coro)
501{
502 MAGIC *mg;
503
504 if (SvROK (coro))
505 coro = SvRV (coro);
506
507 mg = SvSTATEhv_p (aTHX_ coro);
508 if (!mg)
509 croak ("Coro::State object required");
510
511 return (struct coro *)mg->mg_ptr;
512}
513
514#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
515
516/* faster than SvSTATE, but expects a coroutine hv */
517#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
518#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
519
520/*****************************************************************************/
521/* padlist management and caching */
522
523ecb_inline PADLIST *
340coro_clone_padlist (pTHX_ CV *cv) 524coro_derive_padlist (pTHX_ CV *cv)
341{ 525{
342 AV *padlist = CvPADLIST (cv); 526 PADLIST *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 527 PADLIST *newpadlist;
528 PADNAMELIST *padnames;
529 PAD *newpad;
530 PADOFFSET off = PadlistMAX (padlist) + 1;
344 531
345 newpadlist = newAV (); 532#if NEWPADAPI
533
534 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
535 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
536 while (!PadlistARRAY (padlist)[off - 1])
537 --off;
538
539 Perl_pad_push (aTHX_ padlist, off);
540
541 newpad = PadlistARRAY (padlist)[off];
542 PadlistARRAY (padlist)[off] = 0;
543
544#else
545
546#if PERL_VERSION_ATLEAST (5,10,0)
547 Perl_pad_push (aTHX_ padlist, off);
548#else
549 Perl_pad_push (aTHX_ padlist, off, 1);
550#endif
551
552 newpad = PadlistARRAY (padlist)[off];
553 PadlistMAX (padlist) = off - 1;
554
555#endif
556
557 newPADLIST (newpadlist);
558#if !PERL_VERSION_ATLEAST(5,15,3)
559 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
346 AvREAL_off (newpadlist); 560 AvREAL_off (newpadlist);
347#if PERL_VERSION_ATLEAST (5,10,0)
348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
349#else
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 561#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist);
354 562
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 563 /* Already extended to 2 elements by newPADLIST. */
356 av_store (newpadlist, 1, (SV *)newpad); 564 PadlistMAX (newpadlist) = 1;
565
566 padnames = PadlistNAMES (padlist);
567 ++PadnamelistREFCNT (padnames);
568 PadlistNAMES (newpadlist) = padnames;
569
570 PadlistARRAY (newpadlist)[1] = newpad;
357 571
358 return newpadlist; 572 return newpadlist;
359} 573}
360 574
361static void 575ecb_inline void
362free_padlist (pTHX_ AV *padlist) 576free_padlist (pTHX_ PADLIST *padlist)
363{ 577{
364 /* may be during global destruction */ 578 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 579 if (!IN_DESTRUCT)
366 { 580 {
367 I32 i = AvFILLp (padlist); 581 I32 i = PadlistMAX (padlist);
368 while (i >= 0) 582
583 while (i > 0) /* special-case index 0 */
369 { 584 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 585 /* we try to be extra-careful here */
586 PAD *pad = PadlistARRAY (padlist)[i--];
587
371 if (svp) 588 if (pad)
372 { 589 {
373 SV *sv; 590 I32 j = PadMAX (pad);
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 591
592 while (j >= 0)
375 SvREFCNT_dec (sv); 593 SvREFCNT_dec (PadARRAY (pad)[j--]);
376 594
595 PadMAX (pad) = -1;
377 SvREFCNT_dec (*svp); 596 SvREFCNT_dec (pad);
378 } 597 }
379 } 598 }
380 599
600 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
601
602#if NEWPADAPI
603 Safefree (PadlistARRAY (padlist));
604 Safefree (padlist);
605#else
606 AvFILLp (padlist) = -1;
607 AvREAL_off (padlist);
381 SvREFCNT_dec ((SV*)padlist); 608 SvREFCNT_dec ((SV*)padlist);
609#endif
382 } 610 }
383} 611}
384 612
385static int 613static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 614coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 615{
388 AV *padlist; 616 PADLIST *padlist;
389 AV *av = (AV *)mg->mg_obj; 617 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
618 size_t len = *(size_t *)mg->mg_ptr;
390 619
391 /* casting is fun. */ 620 /* perl manages to free our internal AV and _then_ call us */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 621 if (IN_DESTRUCT)
622 return 0;
623
624 while (len--)
393 free_padlist (aTHX_ padlist); 625 free_padlist (aTHX_ padlists[len]);
394
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 626
397 return 0; 627 return 0;
398} 628}
399
400#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 629
403static MGVTBL coro_cv_vtbl = { 630static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 631 0, 0, 0, 0,
405 coro_cv_free 632 coro_cv_free
406}; 633};
407 634
408#define CORO_MAGIC_NN(sv, type) \
409 (expect_true (SvMAGIC (sv)->mg_type == type) \
410 ? SvMAGIC (sv) \
411 : mg_find (sv, type))
412
413#define CORO_MAGIC(sv, type) \
414 (expect_true (SvMAGIC (sv)) \
415 ? CORO_MAGIC_NN (sv, type) \
416 : 0)
417
418#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
419#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
420
421INLINE struct coro *
422SvSTATE_ (pTHX_ SV *coro)
423{
424 HV *stash;
425 MAGIC *mg;
426
427 if (SvROK (coro))
428 coro = SvRV (coro);
429
430 if (expect_false (SvTYPE (coro) != SVt_PVHV))
431 croak ("Coro::State object required");
432
433 stash = SvSTASH (coro);
434 if (expect_false (stash != coro_stash && stash != coro_state_stash))
435 {
436 /* very slow, but rare, check */
437 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
438 croak ("Coro::State object required");
439 }
440
441 mg = CORO_MAGIC_state (coro);
442 return (struct coro *)mg->mg_ptr;
443}
444
445#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
446
447/* faster than SvSTATE, but expects a coroutine hv */
448#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
449#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
450
451/* the next two functions merely cache the padlists */ 635/* the next two functions merely cache the padlists */
452static void 636ecb_inline void
453get_padlist (pTHX_ CV *cv) 637get_padlist (pTHX_ CV *cv)
454{ 638{
455 MAGIC *mg = CORO_MAGIC_cv (cv); 639 MAGIC *mg = CORO_MAGIC_cv (cv);
456 AV *av; 640 size_t *lenp;
457 641
458 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 642 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
459 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 643 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
460 else 644 else
461 { 645 {
462#if CORO_PREFER_PERL_FUNCTIONS 646#if CORO_PREFER_PERL_FUNCTIONS
463 /* this is probably cleaner? but also slower! */ 647 /* this is probably cleaner? but also slower! */
464 /* in practise, it seems to be less stable */ 648 /* in practise, it seems to be less stable */
465 CV *cp = Perl_cv_clone (aTHX_ cv); 649 CV *cp = Perl_cv_clone (aTHX_ cv);
466 CvPADLIST (cv) = CvPADLIST (cp); 650 CvPADLIST (cv) = CvPADLIST (cp);
467 CvPADLIST (cp) = 0; 651 CvPADLIST (cp) = 0;
468 SvREFCNT_dec (cp); 652 SvREFCNT_dec (cp);
469#else 653#else
470 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 654 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
471#endif 655#endif
472 } 656 }
473} 657}
474 658
475static void 659ecb_inline void
476put_padlist (pTHX_ CV *cv) 660put_padlist (pTHX_ CV *cv)
477{ 661{
478 MAGIC *mg = CORO_MAGIC_cv (cv); 662 MAGIC *mg = CORO_MAGIC_cv (cv);
479 AV *av;
480 663
481 if (expect_false (!mg)) 664 if (ecb_expect_false (!mg))
665 {
482 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 666 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
667 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
668 mg->mg_len = 1; /* so mg_free frees mg_ptr */
669 }
670 else
671 Renew (mg->mg_ptr,
672 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
673 char);
483 674
484 av = (AV *)mg->mg_obj; 675 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
485
486 if (expect_false (AvFILLp (av) >= AvMAX (av)))
487 av_extend (av, AvMAX (av) + 1);
488
489 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
490} 676}
491 677
492/** load & save, init *******************************************************/ 678/** load & save, init *******************************************************/
679
680ecb_inline void
681swap_sv (SV *a, SV *b)
682{
683 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
684 SV tmp;
685
686 /* swap sv_any */
687 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
688
689 /* swap sv_flags */
690 SvFLAGS (&tmp) = SvFLAGS (a);
691 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
692 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
693
694#if PERL_VERSION_ATLEAST (5,10,0)
695 /* perl 5.10 and later complicates this _quite_ a bit, but it also
696 * is much faster, so no quarrels here. alternatively, we could
697 * sv_upgrade to avoid this.
698 */
699 {
700 /* swap sv_u */
701 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
702
703 /* if SvANY points to the head, we need to adjust the pointers,
704 * as the pointer for a still points to b, and maybe vice versa.
705 */
706 #define svany_in_head(type) \
707 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
708
709 if (svany_in_head (SvTYPE (a)))
710 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
711
712 if (svany_in_head (SvTYPE (b)))
713 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
714 }
715#endif
716}
717
718/* swap sv heads, at least logically */
719static void
720swap_svs (pTHX_ Coro__State c)
721{
722 int i;
723
724 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
725 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
726}
727
728#define SWAP_SVS(coro) \
729 if (ecb_expect_false ((coro)->swap_sv)) \
730 swap_svs (aTHX_ (coro))
731
732static void
733on_enterleave_call (pTHX_ SV *cb);
493 734
494static void 735static void
495load_perl (pTHX_ Coro__State c) 736load_perl (pTHX_ Coro__State c)
496{ 737{
497 perl_slots *slot = c->slot; 738 perl_slots *slot = c->slot;
498 c->slot = 0; 739 c->slot = 0;
499 740
500 PL_mainstack = c->mainstack; 741 PL_mainstack = c->mainstack;
501 742
502 GvSV (PL_defgv) = slot->defsv; 743#if CORO_JIT
503 GvAV (PL_defgv) = slot->defav; 744 load_perl_slots (slot);
504 GvSV (PL_errgv) = slot->errsv; 745#else
505 GvSV (irsgv) = slot->irsgv;
506
507 #define VAR(name,type) PL_ ## name = slot->name; 746 #define VARx(name,expr,type) expr = slot->name;
508 # include "state.h" 747 #include "state.h"
509 #undef VAR 748#endif
510 749
511 { 750 {
512 dSP; 751 dSP;
513 752
514 CV *cv; 753 CV *cv;
515 754
516 /* now do the ugly restore mess */ 755 /* now do the ugly restore mess */
517 while (expect_true (cv = (CV *)POPs)) 756 while (ecb_expect_true (cv = (CV *)POPs))
518 { 757 {
519 put_padlist (aTHX_ cv); /* mark this padlist as available */ 758 put_padlist (aTHX_ cv); /* mark this padlist as available */
520 CvDEPTH (cv) = PTR2IV (POPs); 759 CvDEPTH (cv) = PTR2IV (POPs);
521 CvPADLIST (cv) = (AV *)POPs; 760 CvPADLIST (cv) = (PADLIST *)POPs;
522 } 761 }
523 762
524 PUTBACK; 763 PUTBACK;
525 } 764 }
526 765
527 slf_frame = c->slf_frame; 766 slf_frame = c->slf_frame;
528 CORO_THROW = c->except; 767 CORO_THROW = c->except;
768
769 if (ecb_expect_false (enable_times))
770 {
771 if (ecb_expect_false (!times_valid))
772 coro_times_update ();
773
774 coro_times_sub (c);
775 }
776
777 if (ecb_expect_false (c->on_enter))
778 {
779 int i;
780
781 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
782 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
783 }
784
785 SWAP_SVS (c);
529} 786}
530 787
531static void 788static void
532save_perl (pTHX_ Coro__State c) 789save_perl (pTHX_ Coro__State c)
533{ 790{
791 SWAP_SVS (c);
792
793 if (ecb_expect_false (c->on_leave))
794 {
795 int i;
796
797 for (i = AvFILLp (c->on_leave); i >= 0; --i)
798 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
799 }
800
801 times_valid = 0;
802
803 if (ecb_expect_false (enable_times))
804 {
805 coro_times_update (); times_valid = 1;
806 coro_times_add (c);
807 }
808
534 c->except = CORO_THROW; 809 c->except = CORO_THROW;
535 c->slf_frame = slf_frame; 810 c->slf_frame = slf_frame;
536 811
537 { 812 {
538 dSP; 813 dSP;
… …
547 822
548 XPUSHs (Nullsv); 823 XPUSHs (Nullsv);
549 /* this loop was inspired by pp_caller */ 824 /* this loop was inspired by pp_caller */
550 for (;;) 825 for (;;)
551 { 826 {
552 while (expect_true (cxix >= 0)) 827 while (ecb_expect_true (cxix >= 0))
553 { 828 {
554 PERL_CONTEXT *cx = &ccstk[cxix--]; 829 PERL_CONTEXT *cx = &ccstk[cxix--];
555 830
556 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 831 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
557 { 832 {
558 CV *cv = cx->blk_sub.cv; 833 CV *cv = cx->blk_sub.cv;
559 834
560 if (expect_true (CvDEPTH (cv))) 835 if (ecb_expect_true (CvDEPTH (cv)))
561 { 836 {
562 EXTEND (SP, 3); 837 EXTEND (SP, 3);
563 PUSHs ((SV *)CvPADLIST (cv)); 838 PUSHs ((SV *)CvPADLIST (cv));
564 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 839 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
565 PUSHs ((SV *)cv); 840 PUSHs ((SV *)cv);
… …
568 get_padlist (aTHX_ cv); 843 get_padlist (aTHX_ cv);
569 } 844 }
570 } 845 }
571 } 846 }
572 847
573 if (expect_true (top_si->si_type == PERLSI_MAIN)) 848 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
574 break; 849 break;
575 850
576 top_si = top_si->si_prev; 851 top_si = top_si->si_prev;
577 ccstk = top_si->si_cxstack; 852 ccstk = top_si->si_cxstack;
578 cxix = top_si->si_cxix; 853 cxix = top_si->si_cxix;
… …
580 855
581 PUTBACK; 856 PUTBACK;
582 } 857 }
583 858
584 /* allocate some space on the context stack for our purposes */ 859 /* allocate some space on the context stack for our purposes */
585 /* we manually unroll here, as usually 2 slots is enough */ 860 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
586 if (SLOT_COUNT >= 1) CXINC;
587 if (SLOT_COUNT >= 2) CXINC;
588 if (SLOT_COUNT >= 3) CXINC;
589 { 861 {
590 int i; 862 unsigned int i;
863
591 for (i = 3; i < SLOT_COUNT; ++i) 864 for (i = 0; i < SLOT_COUNT; ++i)
592 CXINC; 865 CXINC;
593 } 866
594 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 867 cxstack_ix -= SLOT_COUNT; /* undo allocation */
868 }
595 869
596 c->mainstack = PL_mainstack; 870 c->mainstack = PL_mainstack;
597 871
598 { 872 {
599 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 873 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
600 874
601 slot->defav = GvAV (PL_defgv); 875#if CORO_JIT
602 slot->defsv = DEFSV; 876 save_perl_slots (slot);
603 slot->errsv = ERRSV; 877#else
604 slot->irsgv = GvSV (irsgv);
605
606 #define VAR(name,type) slot->name = PL_ ## name; 878 #define VARx(name,expr,type) slot->name = expr;
607 # include "state.h" 879 #include "state.h"
608 #undef VAR 880#endif
609 } 881 }
610} 882}
611 883
612/* 884/*
613 * allocate various perl stacks. This is almost an exact copy 885 * allocate various perl stacks. This is almost an exact copy
… …
619# define coro_init_stacks(thx) init_stacks () 891# define coro_init_stacks(thx) init_stacks ()
620#else 892#else
621static void 893static void
622coro_init_stacks (pTHX) 894coro_init_stacks (pTHX)
623{ 895{
624 PL_curstackinfo = new_stackinfo(32, 8); 896 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
625 PL_curstackinfo->si_type = PERLSI_MAIN; 897 PL_curstackinfo->si_type = PERLSI_MAIN;
626 PL_curstack = PL_curstackinfo->si_stack; 898 PL_curstack = PL_curstackinfo->si_stack;
627 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 899 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
628 900
629 PL_stack_base = AvARRAY(PL_curstack); 901 PL_stack_base = AvARRAY(PL_curstack);
… …
644#endif 916#endif
645 917
646 New(54,PL_scopestack,8,I32); 918 New(54,PL_scopestack,8,I32);
647 PL_scopestack_ix = 0; 919 PL_scopestack_ix = 0;
648 PL_scopestack_max = 8; 920 PL_scopestack_max = 8;
921#if HAS_SCOPESTACK_NAME
922 New(54,PL_scopestack_name,8,const char*);
923#endif
649 924
650 New(54,PL_savestack,24,ANY); 925 New(54,PL_savestack,24,ANY);
651 PL_savestack_ix = 0; 926 PL_savestack_ix = 0;
652 PL_savestack_max = 24; 927 PL_savestack_max = 24;
653 928
… …
681 } 956 }
682 957
683 Safefree (PL_tmps_stack); 958 Safefree (PL_tmps_stack);
684 Safefree (PL_markstack); 959 Safefree (PL_markstack);
685 Safefree (PL_scopestack); 960 Safefree (PL_scopestack);
961#if HAS_SCOPESTACK_NAME
962 Safefree (PL_scopestack_name);
963#endif
686 Safefree (PL_savestack); 964 Safefree (PL_savestack);
687#if !PERL_VERSION_ATLEAST (5,10,0) 965#if !PERL_VERSION_ATLEAST (5,10,0)
688 Safefree (PL_retstack); 966 Safefree (PL_retstack);
689#endif 967#endif
690} 968}
691 969
970#define CORO_RSS \
971 rss += sizeof (SYM (curstackinfo)); \
972 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
973 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
974 rss += SYM (tmps_max) * sizeof (SV *); \
975 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
976 rss += SYM (scopestack_max) * sizeof (I32); \
977 rss += SYM (savestack_max) * sizeof (ANY);
978
692static size_t 979static size_t
693coro_rss (pTHX_ struct coro *coro) 980coro_rss (pTHX_ struct coro *coro)
694{ 981{
695 size_t rss = sizeof (*coro); 982 size_t rss = sizeof (*coro);
696 983
697 if (coro->mainstack) 984 if (coro->mainstack)
698 { 985 {
699 perl_slots tmp_slot;
700 perl_slots *slot;
701
702 if (coro->flags & CF_RUNNING) 986 if (coro->flags & CF_RUNNING)
703 { 987 {
704 slot = &tmp_slot; 988 #define SYM(sym) PL_ ## sym
705 989 CORO_RSS;
706 #define VAR(name,type) slot->name = PL_ ## name;
707 # include "state.h"
708 #undef VAR 990 #undef SYM
709 } 991 }
710 else 992 else
711 slot = coro->slot;
712
713 if (slot)
714 { 993 {
715 rss += sizeof (slot->curstackinfo); 994 #define SYM(sym) coro->slot->sym
716 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 995 CORO_RSS;
717 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 996 #undef SYM
718 rss += slot->tmps_max * sizeof (SV *);
719 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
720 rss += slot->scopestack_max * sizeof (I32);
721 rss += slot->savestack_max * sizeof (ANY);
722
723#if !PERL_VERSION_ATLEAST (5,10,0)
724 rss += slot->retstack_max * sizeof (OP *);
725#endif
726 } 997 }
727 } 998 }
728 999
729 return rss; 1000 return rss;
730} 1001}
… …
743#endif 1014#endif
744 1015
745/* 1016/*
746 * This overrides the default magic get method of %SIG elements. 1017 * This overrides the default magic get method of %SIG elements.
747 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1018 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
748 * and instead of tryign to save and restore the hash elements, we just provide 1019 * and instead of trying to save and restore the hash elements (extremely slow),
749 * readback here. 1020 * we just provide our own readback here.
750 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
751 * not expecting this to actually change the hook. This is a potential problem
752 * when a schedule happens then, but we ignore this.
753 */ 1021 */
754static int 1022static int ecb_cold
755coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1023coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
756{ 1024{
757 const char *s = MgPV_nolen_const (mg); 1025 const char *s = MgPV_nolen_const (mg);
758 1026
759 if (*s == '_') 1027 if (*s == '_')
760 { 1028 {
761 SV **svp = 0; 1029 SV **svp = 0;
762 1030
763 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1031 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
764 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1032 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
765 1033
766 if (svp) 1034 if (svp)
767 { 1035 {
768 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1036 SV *ssv;
1037
1038 if (!*svp)
1039 ssv = &PL_sv_undef;
1040 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1041 ssv = sv_2mortal (newRV_inc (*svp));
1042 else
1043 ssv = *svp;
1044
1045 sv_setsv (sv, ssv);
769 return 0; 1046 return 0;
770 } 1047 }
771 } 1048 }
772 1049
773 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1050 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
774} 1051}
775 1052
776static int 1053static int ecb_cold
777coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1054coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
778{ 1055{
779 const char *s = MgPV_nolen_const (mg); 1056 const char *s = MgPV_nolen_const (mg);
780 1057
781 if (*s == '_') 1058 if (*s == '_')
… …
795 } 1072 }
796 1073
797 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1074 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
798} 1075}
799 1076
800static int 1077static int ecb_cold
801coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1078coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
802{ 1079{
803 const char *s = MgPV_nolen_const (mg); 1080 const char *s = MgPV_nolen_const (mg);
804 1081
805 if (*s == '_') 1082 if (*s == '_')
… …
810 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1087 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
811 1088
812 if (svp) 1089 if (svp)
813 { 1090 {
814 SV *old = *svp; 1091 SV *old = *svp;
815 *svp = newSVsv (sv); 1092 *svp = SvOK (sv) ? newSVsv (sv) : 0;
816 SvREFCNT_dec (old); 1093 SvREFCNT_dec (old);
817 return 0; 1094 return 0;
818 } 1095 }
819 } 1096 }
820 1097
… …
832slf_check_nop (pTHX_ struct CoroSLF *frame) 1109slf_check_nop (pTHX_ struct CoroSLF *frame)
833{ 1110{
834 return 0; 1111 return 0;
835} 1112}
836 1113
837static UNOP coro_setup_op; 1114static int
1115slf_check_repeat (pTHX_ struct CoroSLF *frame)
1116{
1117 return 1;
1118}
838 1119
839static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1120static UNOP init_perl_op;
1121
1122ecb_noinline static void /* noinline to keep it out of the transfer fast path */
840coro_setup (pTHX_ struct coro *coro) 1123init_perl (pTHX_ struct coro *coro)
841{ 1124{
842 /* 1125 /*
843 * emulate part of the perl startup here. 1126 * emulate part of the perl startup here.
844 */ 1127 */
845 coro_init_stacks (aTHX); 1128 coro_init_stacks (aTHX);
846 1129
847 PL_runops = RUNOPS_DEFAULT; 1130 PL_runops = RUNOPS_DEFAULT;
848 PL_curcop = &PL_compiling; 1131 PL_curcop = &PL_compiling;
849 PL_in_eval = EVAL_NULL; 1132 PL_in_eval = EVAL_NULL;
850 PL_comppad = 0; 1133 PL_comppad = 0;
1134 PL_comppad_name = 0;
1135 PL_comppad_name_fill = 0;
1136 PL_comppad_name_floor = 0;
851 PL_curpm = 0; 1137 PL_curpm = 0;
852 PL_curpad = 0; 1138 PL_curpad = 0;
853 PL_localizing = 0; 1139 PL_localizing = 0;
854 PL_dirty = 0;
855 PL_restartop = 0; 1140 PL_restartop = 0;
856#if PERL_VERSION_ATLEAST (5,10,0) 1141#if PERL_VERSION_ATLEAST (5,10,0)
857 PL_parser = 0; 1142 PL_parser = 0;
858#endif 1143#endif
1144 PL_hints = 0;
859 1145
860 /* recreate the die/warn hooks */ 1146 /* recreate the die/warn hooks */
861 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1147 PL_diehook = SvREFCNT_inc (rv_diehook);
862 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1148 PL_warnhook = SvREFCNT_inc (rv_warnhook);
863 1149
864 GvSV (PL_defgv) = newSV (0); 1150 GvSV (PL_defgv) = newSV (0);
865 GvAV (PL_defgv) = coro->args; coro->args = 0; 1151 GvAV (PL_defgv) = coro->args; coro->args = 0;
866 GvSV (PL_errgv) = newSV (0); 1152 GvSV (PL_errgv) = newSV (0);
867 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1153 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1154 GvHV (PL_hintgv) = newHV ();
1155#if PERL_VERSION_ATLEAST (5,10,0)
1156 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1157#endif
868 PL_rs = newSVsv (GvSV (irsgv)); 1158 PL_rs = newSVsv (GvSV (irsgv));
869 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1159 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
870 1160
871 { 1161 {
872 dSP; 1162 dSP;
… …
887 /* this newly created coroutine might be run on an existing cctx which most 1177 /* this newly created coroutine might be run on an existing cctx which most
888 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1178 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
889 */ 1179 */
890 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1180 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
891 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1181 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1182 slf_frame.destroy = 0;
892 1183
893 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1184 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
894 coro_setup_op.op_next = PL_op; 1185 init_perl_op.op_next = PL_op;
895 coro_setup_op.op_type = OP_CUSTOM; 1186 init_perl_op.op_type = OP_ENTERSUB;
896 coro_setup_op.op_ppaddr = pp_slf; 1187 init_perl_op.op_ppaddr = pp_slf;
897 /* no flags etc. required, as an init function won't be called */ 1188 /* no flags etc. required, as an init function won't be called */
898 1189
899 PL_op = (OP *)&coro_setup_op; 1190 PL_op = (OP *)&init_perl_op;
900 1191
901 /* copy throw, in case it was set before coro_setup */ 1192 /* copy throw, in case it was set before init_perl */
902 CORO_THROW = coro->except; 1193 CORO_THROW = coro->except;
903}
904 1194
1195 SWAP_SVS (coro);
1196
1197 if (ecb_expect_false (enable_times))
1198 {
1199 coro_times_update ();
1200 coro_times_sub (coro);
1201 }
1202}
1203
905static void 1204static void
906coro_destruct (pTHX_ struct coro *coro) 1205coro_unwind_stacks (pTHX)
907{ 1206{
908 if (!IN_DESTRUCT) 1207 if (!IN_DESTRUCT)
909 { 1208 {
910 /* restore all saved variables and stuff */ 1209 /* restore all saved variables and stuff */
911 LEAVE_SCOPE (0); 1210 LEAVE_SCOPE (0);
… …
919 POPSTACK_TO (PL_mainstack); 1218 POPSTACK_TO (PL_mainstack);
920 1219
921 /* unwind main stack */ 1220 /* unwind main stack */
922 dounwind (-1); 1221 dounwind (-1);
923 } 1222 }
1223}
924 1224
925 SvREFCNT_dec (GvSV (PL_defgv)); 1225static void
926 SvREFCNT_dec (GvAV (PL_defgv)); 1226destroy_perl (pTHX_ struct coro *coro)
927 SvREFCNT_dec (GvSV (PL_errgv)); 1227{
928 SvREFCNT_dec (PL_defoutgv); 1228 SV *svf [9];
929 SvREFCNT_dec (PL_rs);
930 SvREFCNT_dec (GvSV (irsgv));
931 1229
932 SvREFCNT_dec (PL_diehook);
933 SvREFCNT_dec (PL_warnhook);
934 1230 {
1231 SV *old_current = SvRV (coro_current);
1232 struct coro *current = SvSTATE (old_current);
1233
1234 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1235
1236 save_perl (aTHX_ current);
1237
1238 /* this will cause transfer_check to croak on block*/
1239 SvRV_set (coro_current, (SV *)coro->hv);
1240
1241 load_perl (aTHX_ coro);
1242
1243 coro_unwind_stacks (aTHX);
1244
1245 /* restore swapped sv's */
1246 SWAP_SVS (coro);
1247
1248 coro_destruct_stacks (aTHX);
1249
1250 /* now save some sv's to be free'd later */
1251 svf [0] = GvSV (PL_defgv);
1252 svf [1] = (SV *)GvAV (PL_defgv);
1253 svf [2] = GvSV (PL_errgv);
1254 svf [3] = (SV *)PL_defoutgv;
1255 svf [4] = PL_rs;
1256 svf [5] = GvSV (irsgv);
1257 svf [6] = (SV *)GvHV (PL_hintgv);
1258 svf [7] = PL_diehook;
1259 svf [8] = PL_warnhook;
1260 assert (9 == sizeof (svf) / sizeof (*svf));
1261
1262 SvRV_set (coro_current, old_current);
1263
1264 load_perl (aTHX_ current);
1265 }
1266
1267 {
1268 unsigned int i;
1269
1270 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1271 SvREFCNT_dec (svf [i]);
1272
935 SvREFCNT_dec (coro->saved_deffh); 1273 SvREFCNT_dec (coro->saved_deffh);
936 SvREFCNT_dec (coro->rouse_cb); 1274 SvREFCNT_dec (coro->rouse_cb);
937 1275 SvREFCNT_dec (coro->invoke_cb);
938 coro_destruct_stacks (aTHX); 1276 SvREFCNT_dec (coro->invoke_av);
1277 }
939} 1278}
940 1279
941INLINE void 1280ecb_inline void
942free_coro_mortal (pTHX) 1281free_coro_mortal (pTHX)
943{ 1282{
944 if (expect_true (coro_mortal)) 1283 if (ecb_expect_true (coro_mortal))
945 { 1284 {
946 SvREFCNT_dec (coro_mortal); 1285 SvREFCNT_dec ((SV *)coro_mortal);
947 coro_mortal = 0; 1286 coro_mortal = 0;
948 } 1287 }
949} 1288}
950 1289
951static int 1290static int
952runops_trace (pTHX) 1291runops_trace (pTHX)
953{ 1292{
954 COP *oldcop = 0; 1293 COP *oldcop = 0;
955 int oldcxix = -2; 1294 int oldcxix = -2;
956 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
957 coro_cctx *cctx = coro->cctx;
958 1295
959 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1296 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
960 { 1297 {
961 PERL_ASYNC_CHECK (); 1298 PERL_ASYNC_CHECK ();
962 1299
963 if (cctx->flags & CC_TRACE_ALL) 1300 if (cctx_current->flags & CC_TRACE_ALL)
964 { 1301 {
965 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1302 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
966 { 1303 {
967 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1304 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
968 SV **bot, **top; 1305 SV **bot, **top;
969 AV *av = newAV (); /* return values */ 1306 AV *av = newAV (); /* return values */
970 SV **cb; 1307 SV **cb;
… …
1007 1344
1008 if (PL_curcop != &PL_compiling) 1345 if (PL_curcop != &PL_compiling)
1009 { 1346 {
1010 SV **cb; 1347 SV **cb;
1011 1348
1012 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1349 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
1013 { 1350 {
1014 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1351 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1015 1352
1016 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1353 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1017 { 1354 {
1018 runops_proc_t old_runops = PL_runops;
1019 dSP; 1355 dSP;
1020 GV *gv = CvGV (cx->blk_sub.cv); 1356 GV *gv = CvGV (cx->blk_sub.cv);
1021 SV *fullname = sv_2mortal (newSV (0)); 1357 SV *fullname = sv_2mortal (newSV (0));
1022 1358
1023 if (isGV (gv)) 1359 if (isGV (gv))
… …
1041 } 1377 }
1042 1378
1043 oldcxix = cxstack_ix; 1379 oldcxix = cxstack_ix;
1044 } 1380 }
1045 1381
1046 if (cctx->flags & CC_TRACE_LINE) 1382 if (cctx_current->flags & CC_TRACE_LINE)
1047 { 1383 {
1048 dSP; 1384 dSP;
1049 1385
1050 PL_runops = RUNOPS_DEFAULT; 1386 PL_runops = RUNOPS_DEFAULT;
1051 ENTER; 1387 ENTER;
… …
1070 1406
1071 TAINT_NOT; 1407 TAINT_NOT;
1072 return 0; 1408 return 0;
1073} 1409}
1074 1410
1075static struct coro_cctx *cctx_ssl_cctx;
1076static struct CoroSLF cctx_ssl_frame; 1411static struct CoroSLF cctx_ssl_frame;
1077 1412
1078static void 1413static void
1079slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1414slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1080{ 1415{
1081 ta->prev = (struct coro *)cctx_ssl_cctx;
1082 ta->next = 0; 1416 ta->prev = 0;
1083} 1417}
1084 1418
1085static int 1419static int
1086slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1420slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1087{ 1421{
… …
1089 1423
1090 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1424 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1091} 1425}
1092 1426
1093/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1427/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1094static void NOINLINE 1428static void ecb_noinline
1095cctx_prepare (pTHX_ coro_cctx *cctx) 1429cctx_prepare (pTHX)
1096{ 1430{
1097 PL_top_env = &PL_start_env; 1431 PL_top_env = &PL_start_env;
1098 1432
1099 if (cctx->flags & CC_TRACE) 1433 if (cctx_current->flags & CC_TRACE)
1100 PL_runops = runops_trace; 1434 PL_runops = runops_trace;
1101 1435
1102 /* we already must be executing an SLF op, there is no other valid way 1436 /* we already must be executing an SLF op, there is no other valid way
1103 * that can lead to creation of a new cctx */ 1437 * that can lead to creation of a new cctx */
1104 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1438 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1105 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1439 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1106 1440
1107 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1441 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1108 cctx_ssl_cctx = cctx;
1109 cctx_ssl_frame = slf_frame; 1442 cctx_ssl_frame = slf_frame;
1110 1443
1111 slf_frame.prepare = slf_prepare_set_stacklevel; 1444 slf_frame.prepare = slf_prepare_set_stacklevel;
1112 slf_frame.check = slf_check_set_stacklevel; 1445 slf_frame.check = slf_check_set_stacklevel;
1113} 1446}
1114 1447
1115/* the tail of transfer: execute stuff we can only do after a transfer */ 1448/* the tail of transfer: execute stuff we can only do after a transfer */
1116INLINE void 1449ecb_inline void
1117transfer_tail (pTHX) 1450transfer_tail (pTHX)
1118{ 1451{
1119 free_coro_mortal (aTHX); 1452 free_coro_mortal (aTHX);
1453}
1454
1455/* try to exit the same way perl's main function would do */
1456/* we do not bother resetting the environment or other things *7
1457/* that are not, uhm, essential */
1458/* this obviously also doesn't work when perl is embedded */
1459static void ecb_noinline ecb_cold
1460perlish_exit (pTHX)
1461{
1462 int exitstatus = perl_destruct (PL_curinterp);
1463 perl_free (PL_curinterp);
1464 exit (exitstatus);
1120} 1465}
1121 1466
1122/* 1467/*
1123 * this is a _very_ stripped down perl interpreter ;) 1468 * this is a _very_ stripped down perl interpreter ;)
1124 */ 1469 */
… …
1136 /* normally we would need to skip the entersub here */ 1481 /* normally we would need to skip the entersub here */
1137 /* not doing so will re-execute it, which is exactly what we want */ 1482 /* not doing so will re-execute it, which is exactly what we want */
1138 /* PL_nop = PL_nop->op_next */ 1483 /* PL_nop = PL_nop->op_next */
1139 1484
1140 /* inject a fake subroutine call to cctx_init */ 1485 /* inject a fake subroutine call to cctx_init */
1141 cctx_prepare (aTHX_ (coro_cctx *)arg); 1486 cctx_prepare (aTHX);
1142 1487
1143 /* cctx_run is the alternative tail of transfer() */ 1488 /* cctx_run is the alternative tail of transfer() */
1144 transfer_tail (aTHX); 1489 transfer_tail (aTHX);
1145 1490
1146 /* somebody or something will hit me for both perl_run and PL_restartop */ 1491 /* somebody or something will hit me for both perl_run and PL_restartop */
1147 PL_restartop = PL_op; 1492 PL_restartop = PL_op;
1148 perl_run (PL_curinterp); 1493 perl_run (PL_curinterp);
1149 /* 1494 /*
1150 * Unfortunately, there is no way to get at the return values of the 1495 * Unfortunately, there is no way to get at the return values of the
1151 * coro body here, as perl_run destroys these 1496 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1497 * runtime errors here, as this is just a random interpreter, not a thread.
1152 */ 1498 */
1153 1499
1154 /* 1500 /*
1155 * If perl-run returns we assume exit() was being called or the coro 1501 * If perl-run returns we assume exit() was being called or the coro
1156 * fell off the end, which seems to be the only valid (non-bug) 1502 * fell off the end, which seems to be the only valid (non-bug)
1157 * reason for perl_run to return. We try to exit by jumping to the 1503 * reason for perl_run to return. We try to mimic whatever perl is normally
1158 * bootstrap-time "top" top_env, as we cannot restore the "main" 1504 * doing in that case. YMMV.
1159 * coroutine as Coro has no such concept
1160 */ 1505 */
1161 PL_top_env = main_top_env; 1506 perlish_exit (aTHX);
1162 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1163 } 1507 }
1164} 1508}
1165 1509
1166static coro_cctx * 1510static coro_cctx *
1167cctx_new () 1511cctx_new (void)
1168{ 1512{
1169 coro_cctx *cctx; 1513 coro_cctx *cctx;
1170 1514
1171 ++cctx_count; 1515 ++cctx_count;
1172 New (0, cctx, 1, coro_cctx); 1516 New (0, cctx, 1, coro_cctx);
… …
1178 return cctx; 1522 return cctx;
1179} 1523}
1180 1524
1181/* create a new cctx only suitable as source */ 1525/* create a new cctx only suitable as source */
1182static coro_cctx * 1526static coro_cctx *
1183cctx_new_empty () 1527cctx_new_empty (void)
1184{ 1528{
1185 coro_cctx *cctx = cctx_new (); 1529 coro_cctx *cctx = cctx_new ();
1186 1530
1187 cctx->sptr = 0; 1531 cctx->stack.sptr = 0;
1188 coro_create (&cctx->cctx, 0, 0, 0, 0); 1532 coro_create (&cctx->cctx, 0, 0, 0, 0);
1189 1533
1190 return cctx; 1534 return cctx;
1191} 1535}
1192 1536
1193/* create a new cctx suitable as destination/running a perl interpreter */ 1537/* create a new cctx suitable as destination/running a perl interpreter */
1194static coro_cctx * 1538static coro_cctx *
1195cctx_new_run () 1539cctx_new_run (void)
1196{ 1540{
1197 coro_cctx *cctx = cctx_new (); 1541 coro_cctx *cctx = cctx_new ();
1198 void *stack_start;
1199 size_t stack_size;
1200 1542
1201#if HAVE_MMAP 1543 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1202 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1203 /* mmap supposedly does allocate-on-write for us */
1204 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1205
1206 if (cctx->sptr != (void *)-1)
1207 {
1208 #if CORO_STACKGUARD
1209 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1210 #endif
1211 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1212 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1213 cctx->flags |= CC_MAPPED;
1214 } 1544 {
1215 else
1216#endif
1217 {
1218 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1219 New (0, cctx->sptr, cctx_stacksize, long);
1220
1221 if (!cctx->sptr)
1222 {
1223 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1545 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1224 _exit (EXIT_FAILURE); 1546 _exit (EXIT_FAILURE);
1225 }
1226
1227 stack_start = cctx->sptr;
1228 stack_size = cctx->ssize;
1229 } 1547 }
1230 1548
1231 #if CORO_USE_VALGRIND
1232 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1233 #endif
1234
1235 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1549 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1236 1550
1237 return cctx; 1551 return cctx;
1238} 1552}
1239 1553
1240static void 1554static void
1241cctx_destroy (coro_cctx *cctx) 1555cctx_destroy (coro_cctx *cctx)
1242{ 1556{
1243 if (!cctx) 1557 if (!cctx)
1244 return; 1558 return;
1245 1559
1560 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1561
1246 --cctx_count; 1562 --cctx_count;
1247 coro_destroy (&cctx->cctx); 1563 coro_destroy (&cctx->cctx);
1248 1564
1249 /* coro_transfer creates new, empty cctx's */ 1565 coro_stack_free (&cctx->stack);
1250 if (cctx->sptr)
1251 {
1252 #if CORO_USE_VALGRIND
1253 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1254 #endif
1255
1256#if HAVE_MMAP
1257 if (cctx->flags & CC_MAPPED)
1258 munmap (cctx->sptr, cctx->ssize);
1259 else
1260#endif
1261 Safefree (cctx->sptr);
1262 }
1263 1566
1264 Safefree (cctx); 1567 Safefree (cctx);
1265} 1568}
1266 1569
1267/* wether this cctx should be destructed */ 1570/* wether this cctx should be destructed */
1268#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1571#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1269 1572
1270static coro_cctx * 1573static coro_cctx *
1271cctx_get (pTHX) 1574cctx_get (pTHX)
1272{ 1575{
1273 while (expect_true (cctx_first)) 1576 while (ecb_expect_true (cctx_first))
1274 { 1577 {
1275 coro_cctx *cctx = cctx_first; 1578 coro_cctx *cctx = cctx_first;
1276 cctx_first = cctx->next; 1579 cctx_first = cctx->next;
1277 --cctx_idle; 1580 --cctx_idle;
1278 1581
1279 if (expect_true (!CCTX_EXPIRED (cctx))) 1582 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1280 return cctx; 1583 return cctx;
1281 1584
1282 cctx_destroy (cctx); 1585 cctx_destroy (cctx);
1283 } 1586 }
1284 1587
… …
1286} 1589}
1287 1590
1288static void 1591static void
1289cctx_put (coro_cctx *cctx) 1592cctx_put (coro_cctx *cctx)
1290{ 1593{
1291 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1594 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1292 1595
1293 /* free another cctx if overlimit */ 1596 /* free another cctx if overlimit */
1294 if (expect_false (cctx_idle >= cctx_max_idle)) 1597 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1295 { 1598 {
1296 coro_cctx *first = cctx_first; 1599 coro_cctx *first = cctx_first;
1297 cctx_first = first->next; 1600 cctx_first = first->next;
1298 --cctx_idle; 1601 --cctx_idle;
1299 1602
… …
1310static void 1613static void
1311transfer_check (pTHX_ struct coro *prev, struct coro *next) 1614transfer_check (pTHX_ struct coro *prev, struct coro *next)
1312{ 1615{
1313 /* TODO: throwing up here is considered harmful */ 1616 /* TODO: throwing up here is considered harmful */
1314 1617
1315 if (expect_true (prev != next)) 1618 if (ecb_expect_true (prev != next))
1316 { 1619 {
1317 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1620 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1318 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1621 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1319 1622
1320 if (expect_false (next->flags & CF_RUNNING)) 1623 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1321 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1322
1323 if (expect_false (next->flags & CF_DESTROYED))
1324 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1624 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1325 1625
1326#if !PERL_VERSION_ATLEAST (5,10,0) 1626#if !PERL_VERSION_ATLEAST (5,10,0)
1327 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1627 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1328 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1628 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1329#endif 1629#endif
1330 } 1630 }
1331} 1631}
1332 1632
1333/* always use the TRANSFER macro */ 1633/* always use the TRANSFER macro */
1334static void NOINLINE /* noinline so we have a fixed stackframe */ 1634static void ecb_noinline /* noinline so we have a fixed stackframe */
1335transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1635transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1336{ 1636{
1337 dSTACKLEVEL; 1637 dSTACKLEVEL;
1338 1638
1339 /* sometimes transfer is only called to set idle_sp */ 1639 /* sometimes transfer is only called to set idle_sp */
1340 if (expect_false (!next)) 1640 if (ecb_expect_false (!prev))
1341 { 1641 {
1342 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1642 cctx_current->idle_sp = STACKLEVEL;
1343 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1643 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1344 } 1644 }
1345 else if (expect_true (prev != next)) 1645 else if (ecb_expect_true (prev != next))
1346 { 1646 {
1347 coro_cctx *prev__cctx; 1647 coro_cctx *cctx_prev;
1348 1648
1349 if (expect_false (prev->flags & CF_NEW)) 1649 if (ecb_expect_false (prev->flags & CF_NEW))
1350 { 1650 {
1351 /* create a new empty/source context */ 1651 /* create a new empty/source context */
1352 prev->cctx = cctx_new_empty ();
1353 prev->flags &= ~CF_NEW; 1652 prev->flags &= ~CF_NEW;
1354 prev->flags |= CF_RUNNING; 1653 prev->flags |= CF_RUNNING;
1355 } 1654 }
1356 1655
1357 prev->flags &= ~CF_RUNNING; 1656 prev->flags &= ~CF_RUNNING;
1358 next->flags |= CF_RUNNING; 1657 next->flags |= CF_RUNNING;
1359 1658
1360 /* first get rid of the old state */ 1659 /* first get rid of the old state */
1361 save_perl (aTHX_ prev); 1660 save_perl (aTHX_ prev);
1362 1661
1363 if (expect_false (next->flags & CF_NEW)) 1662 if (ecb_expect_false (next->flags & CF_NEW))
1364 { 1663 {
1365 /* need to start coroutine */ 1664 /* need to start coroutine */
1366 next->flags &= ~CF_NEW; 1665 next->flags &= ~CF_NEW;
1367 /* setup coroutine call */ 1666 /* setup coroutine call */
1368 coro_setup (aTHX_ next); 1667 init_perl (aTHX_ next);
1369 } 1668 }
1370 else 1669 else
1371 load_perl (aTHX_ next); 1670 load_perl (aTHX_ next);
1372 1671
1373 prev__cctx = prev->cctx;
1374
1375 /* possibly untie and reuse the cctx */ 1672 /* possibly untie and reuse the cctx */
1376 if (expect_true ( 1673 if (ecb_expect_true (
1377 prev__cctx->idle_sp == STACKLEVEL 1674 cctx_current->idle_sp == STACKLEVEL
1378 && !(prev__cctx->flags & CC_TRACE) 1675 && !(cctx_current->flags & CC_TRACE)
1379 && !force_cctx 1676 && !force_cctx
1380 )) 1677 ))
1381 { 1678 {
1382 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1679 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1383 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1680 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1384 1681
1385 prev->cctx = 0;
1386
1387 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1682 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1388 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1683 /* without this the next cctx_get might destroy the running cctx while still in use */
1389 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1684 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1390 if (!next->cctx) 1685 if (ecb_expect_true (!next->cctx))
1391 next->cctx = cctx_get (aTHX); 1686 next->cctx = cctx_get (aTHX);
1392 1687
1393 cctx_put (prev__cctx); 1688 cctx_put (cctx_current);
1394 } 1689 }
1690 else
1691 prev->cctx = cctx_current;
1395 1692
1396 ++next->usecount; 1693 ++next->usecount;
1397 1694
1398 if (expect_true (!next->cctx)) 1695 cctx_prev = cctx_current;
1399 next->cctx = cctx_get (aTHX); 1696 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1400 1697
1401 if (expect_false (prev__cctx != next->cctx)) 1698 next->cctx = 0;
1699
1700 if (ecb_expect_false (cctx_prev != cctx_current))
1402 { 1701 {
1403 prev__cctx->top_env = PL_top_env; 1702 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1703 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1704 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1705 }
1407 1706
1408 transfer_tail (aTHX); 1707 transfer_tail (aTHX);
1409 } 1708 }
1410} 1709}
… …
1412#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1711#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1413#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1712#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1414 1713
1415/** high level stuff ********************************************************/ 1714/** high level stuff ********************************************************/
1416 1715
1716/* this function is actually Coro, not Coro::State, but we call it from here */
1717/* because it is convenient - but it hasn't been declared yet for that reason */
1417static int 1718static void
1719coro_call_on_destroy (pTHX_ struct coro *coro);
1720
1721static void
1418coro_state_destroy (pTHX_ struct coro *coro) 1722coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1723{
1420 if (coro->flags & CF_DESTROYED) 1724 if (coro->flags & CF_ZOMBIE)
1421 return 0; 1725 return;
1422 1726
1423 if (coro->on_destroy)
1424 coro->on_destroy (aTHX_ coro); 1727 slf_destroy (aTHX_ coro);
1425 1728
1426 coro->flags |= CF_DESTROYED; 1729 coro->flags |= CF_ZOMBIE;
1427 1730
1428 if (coro->flags & CF_READY) 1731 if (coro->flags & CF_READY)
1429 { 1732 {
1430 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1733 /* reduce nready, as destroying a ready coro effectively unreadies it */
1431 /* alternative: look through all ready queues and remove the coro */ 1734 /* alternative: look through all ready queues and remove the coro */
1432 --coro_nready; 1735 --coro_nready;
1433 } 1736 }
1434 else 1737 else
1435 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1738 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1436 1739
1437 if (coro->mainstack && coro->mainstack != main_mainstack) 1740 if (coro->next) coro->next->prev = coro->prev;
1438 { 1741 if (coro->prev) coro->prev->next = coro->next;
1439 struct coro temp; 1742 if (coro == coro_first) coro_first = coro->next;
1440 1743
1441 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1744 if (coro->mainstack
1442 1745 && coro->mainstack != main_mainstack
1443 save_perl (aTHX_ &temp); 1746 && coro->slot
1747 && !PL_dirty)
1444 load_perl (aTHX_ coro); 1748 destroy_perl (aTHX_ coro);
1445
1446 coro_destruct (aTHX_ coro);
1447
1448 load_perl (aTHX_ &temp);
1449
1450 coro->slot = 0;
1451 }
1452 1749
1453 cctx_destroy (coro->cctx); 1750 cctx_destroy (coro->cctx);
1454 SvREFCNT_dec (coro->startcv); 1751 SvREFCNT_dec (coro->startcv);
1455 SvREFCNT_dec (coro->args); 1752 SvREFCNT_dec (coro->args);
1753 SvREFCNT_dec (coro->swap_sv);
1456 SvREFCNT_dec (CORO_THROW); 1754 SvREFCNT_dec (CORO_THROW);
1457 1755
1458 if (coro->next) coro->next->prev = coro->prev; 1756 coro_call_on_destroy (aTHX_ coro);
1459 if (coro->prev) coro->prev->next = coro->next;
1460 if (coro == coro_first) coro_first = coro->next;
1461 1757
1462 return 1; 1758 /* more destruction mayhem in coro_state_free */
1463} 1759}
1464 1760
1465static int 1761static int
1466coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1762coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1467{ 1763{
1468 struct coro *coro = (struct coro *)mg->mg_ptr; 1764 struct coro *coro = (struct coro *)mg->mg_ptr;
1469 mg->mg_ptr = 0; 1765 mg->mg_ptr = 0;
1470 1766
1471 coro->hv = 0;
1472
1473 if (--coro->refcnt < 0)
1474 {
1475 coro_state_destroy (aTHX_ coro); 1767 coro_state_destroy (aTHX_ coro);
1768 SvREFCNT_dec (coro->on_destroy);
1769 SvREFCNT_dec (coro->status);
1770
1476 Safefree (coro); 1771 Safefree (coro);
1477 }
1478 1772
1479 return 0; 1773 return 0;
1480} 1774}
1481 1775
1482static int 1776static int ecb_cold
1483coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1777coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1484{ 1778{
1485 struct coro *coro = (struct coro *)mg->mg_ptr; 1779 /* called when perl clones the current process the slow way (windows process emulation) */
1486 1780 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1487 ++coro->refcnt; 1781 mg->mg_ptr = 0;
1782 mg->mg_virtual = 0;
1488 1783
1489 return 0; 1784 return 0;
1490} 1785}
1491 1786
1492static MGVTBL coro_state_vtbl = { 1787static MGVTBL coro_state_vtbl = {
… …
1515 1810
1516 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1811 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1517 TRANSFER (ta, 1); 1812 TRANSFER (ta, 1);
1518} 1813}
1519 1814
1520/*****************************************************************************/
1521/* gensub: simple closure generation utility */
1522
1523#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1524
1525/* create a closure from XS, returns a code reference */
1526/* the arg can be accessed via GENSUB_ARG from the callback */
1527/* the callback must use dXSARGS/XSRETURN */
1528static SV *
1529gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1530{
1531 CV *cv = (CV *)newSV (0);
1532
1533 sv_upgrade ((SV *)cv, SVt_PVCV);
1534
1535 CvANON_on (cv);
1536 CvISXSUB_on (cv);
1537 CvXSUB (cv) = xsub;
1538 GENSUB_ARG = arg;
1539
1540 return newRV_noinc ((SV *)cv);
1541}
1542
1543/** Coro ********************************************************************/ 1815/** Coro ********************************************************************/
1544 1816
1545INLINE void 1817ecb_inline void
1546coro_enq (pTHX_ struct coro *coro) 1818coro_enq (pTHX_ struct coro *coro)
1547{ 1819{
1548 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1820 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1549}
1550 1821
1551INLINE SV * 1822 SvREFCNT_inc_NN (coro->hv);
1823
1824 coro->next_ready = 0;
1825 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1826 ready [1] = coro;
1827}
1828
1829ecb_inline struct coro *
1552coro_deq (pTHX) 1830coro_deq (pTHX)
1553{ 1831{
1554 int prio; 1832 int prio;
1555 1833
1556 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1834 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1557 if (AvFILLp (coro_ready [prio]) >= 0) 1835 {
1558 return av_shift (coro_ready [prio]); 1836 struct coro **ready = coro_ready [prio];
1837
1838 if (ready [0])
1839 {
1840 struct coro *coro = ready [0];
1841 ready [0] = coro->next_ready;
1842 return coro;
1843 }
1844 }
1559 1845
1560 return 0; 1846 return 0;
1847}
1848
1849static void
1850invoke_sv_ready_hook_helper (void)
1851{
1852 dTHX;
1853 dSP;
1854
1855 ENTER;
1856 SAVETMPS;
1857
1858 PUSHMARK (SP);
1859 PUTBACK;
1860 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1861
1862 FREETMPS;
1863 LEAVE;
1561} 1864}
1562 1865
1563static int 1866static int
1564api_ready (pTHX_ SV *coro_sv) 1867api_ready (pTHX_ SV *coro_sv)
1565{ 1868{
1566 struct coro *coro;
1567 SV *sv_hook;
1568 void (*xs_hook)(void);
1569
1570 if (SvROK (coro_sv))
1571 coro_sv = SvRV (coro_sv);
1572
1573 coro = SvSTATE (coro_sv); 1869 struct coro *coro = SvSTATE (coro_sv);
1574 1870
1575 if (coro->flags & CF_READY) 1871 if (coro->flags & CF_READY)
1576 return 0; 1872 return 0;
1577 1873
1578 coro->flags |= CF_READY; 1874 coro->flags |= CF_READY;
1579 1875
1580 sv_hook = coro_nready ? 0 : coro_readyhook;
1581 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1582
1583 coro_enq (aTHX_ coro); 1876 coro_enq (aTHX_ coro);
1584 ++coro_nready;
1585 1877
1586 if (sv_hook) 1878 if (!coro_nready++)
1587 { 1879 if (coroapi.readyhook)
1588 dSP; 1880 coroapi.readyhook ();
1589
1590 ENTER;
1591 SAVETMPS;
1592
1593 PUSHMARK (SP);
1594 PUTBACK;
1595 call_sv (sv_hook, G_VOID | G_DISCARD);
1596
1597 FREETMPS;
1598 LEAVE;
1599 }
1600
1601 if (xs_hook)
1602 xs_hook ();
1603 1881
1604 return 1; 1882 return 1;
1605} 1883}
1606 1884
1607static int 1885static int
1608api_is_ready (pTHX_ SV *coro_sv) 1886api_is_ready (pTHX_ SV *coro_sv)
1609{ 1887{
1610 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1888 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1611} 1889}
1612 1890
1613INLINE void 1891/* expects to own a reference to next->hv */
1892ecb_inline void
1614prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1893prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1615{ 1894{
1616 SV *prev_sv, *next_sv;
1617
1618 for (;;)
1619 {
1620 next_sv = coro_deq (aTHX);
1621
1622 /* nothing to schedule: call the idle handler */
1623 if (expect_false (!next_sv))
1624 {
1625 dSP;
1626
1627 ENTER;
1628 SAVETMPS;
1629
1630 PUSHMARK (SP);
1631 PUTBACK;
1632 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1633
1634 FREETMPS;
1635 LEAVE;
1636 continue;
1637 }
1638
1639 ta->next = SvSTATE_hv (next_sv);
1640
1641 /* cannot transfer to destroyed coros, skip and look for next */
1642 if (expect_false (ta->next->flags & CF_DESTROYED))
1643 {
1644 SvREFCNT_dec (next_sv);
1645 /* coro_nready has already been taken care of by destroy */
1646 continue;
1647 }
1648
1649 --coro_nready;
1650 break;
1651 }
1652
1653 /* free this only after the transfer */
1654 prev_sv = SvRV (coro_current); 1895 SV *prev_sv = SvRV (coro_current);
1896
1655 ta->prev = SvSTATE_hv (prev_sv); 1897 ta->prev = SvSTATE_hv (prev_sv);
1898 ta->next = next;
1899
1656 TRANSFER_CHECK (*ta); 1900 TRANSFER_CHECK (*ta);
1657 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1901
1658 ta->next->flags &= ~CF_READY;
1659 SvRV_set (coro_current, next_sv); 1902 SvRV_set (coro_current, (SV *)next->hv);
1660 1903
1661 free_coro_mortal (aTHX); 1904 free_coro_mortal (aTHX);
1662 coro_mortal = prev_sv; 1905 coro_mortal = prev_sv;
1663} 1906}
1664 1907
1665INLINE void 1908static void
1909prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1910{
1911 for (;;)
1912 {
1913 struct coro *next = coro_deq (aTHX);
1914
1915 if (ecb_expect_true (next))
1916 {
1917 /* cannot transfer to destroyed coros, skip and look for next */
1918 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1919 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1920 else
1921 {
1922 next->flags &= ~CF_READY;
1923 --coro_nready;
1924
1925 prepare_schedule_to (aTHX_ ta, next);
1926 break;
1927 }
1928 }
1929 else
1930 {
1931 /* nothing to schedule: call the idle handler */
1932 if (SvROK (sv_idle)
1933 && SvOBJECT (SvRV (sv_idle)))
1934 {
1935 if (SvRV (sv_idle) == SvRV (coro_current))
1936 {
1937 require_pv ("Carp");
1938
1939 {
1940 dSP;
1941
1942 ENTER;
1943 SAVETMPS;
1944
1945 PUSHMARK (SP);
1946 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
1947 PUTBACK;
1948 call_pv ("Carp::confess", G_VOID | G_DISCARD);
1949
1950 FREETMPS;
1951 LEAVE;
1952 }
1953 }
1954
1955 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1956 api_ready (aTHX_ SvRV (sv_idle));
1957 --coro_nready;
1958 }
1959 else
1960 {
1961 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1962 dSP;
1963
1964 ENTER;
1965 SAVETMPS;
1966
1967 PUSHMARK (SP);
1968 PUTBACK;
1969 call_sv (sv_idle, G_VOID | G_DISCARD);
1970
1971 FREETMPS;
1972 LEAVE;
1973 }
1974 }
1975 }
1976}
1977
1978ecb_inline void
1666prepare_cede (pTHX_ struct coro_transfer_args *ta) 1979prepare_cede (pTHX_ struct coro_transfer_args *ta)
1667{ 1980{
1668 api_ready (aTHX_ coro_current); 1981 api_ready (aTHX_ coro_current);
1669 prepare_schedule (aTHX_ ta); 1982 prepare_schedule (aTHX_ ta);
1670} 1983}
1671 1984
1672INLINE void 1985ecb_inline void
1673prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1986prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1674{ 1987{
1675 SV *prev = SvRV (coro_current); 1988 SV *prev = SvRV (coro_current);
1676 1989
1677 if (coro_nready) 1990 if (coro_nready)
… …
1690 2003
1691 prepare_schedule (aTHX_ &ta); 2004 prepare_schedule (aTHX_ &ta);
1692 TRANSFER (ta, 1); 2005 TRANSFER (ta, 1);
1693} 2006}
1694 2007
2008static void
2009api_schedule_to (pTHX_ SV *coro_sv)
2010{
2011 struct coro_transfer_args ta;
2012 struct coro *next = SvSTATE (coro_sv);
2013
2014 SvREFCNT_inc_NN (coro_sv);
2015 prepare_schedule_to (aTHX_ &ta, next);
2016}
2017
1695static int 2018static int
1696api_cede (pTHX) 2019api_cede (pTHX)
1697{ 2020{
1698 struct coro_transfer_args ta; 2021 struct coro_transfer_args ta;
1699 2022
1700 prepare_cede (aTHX_ &ta); 2023 prepare_cede (aTHX_ &ta);
1701 2024
1702 if (expect_true (ta.prev != ta.next)) 2025 if (ecb_expect_true (ta.prev != ta.next))
1703 { 2026 {
1704 TRANSFER (ta, 1); 2027 TRANSFER (ta, 1);
1705 return 1; 2028 return 1;
1706 } 2029 }
1707 else 2030 else
… …
1726static void 2049static void
1727api_trace (pTHX_ SV *coro_sv, int flags) 2050api_trace (pTHX_ SV *coro_sv, int flags)
1728{ 2051{
1729 struct coro *coro = SvSTATE (coro_sv); 2052 struct coro *coro = SvSTATE (coro_sv);
1730 2053
2054 if (coro->flags & CF_RUNNING)
2055 croak ("cannot enable tracing on a running coroutine, caught");
2056
1731 if (flags & CC_TRACE) 2057 if (flags & CC_TRACE)
1732 { 2058 {
1733 if (!coro->cctx) 2059 if (!coro->cctx)
1734 coro->cctx = cctx_new_run (); 2060 coro->cctx = cctx_new_run ();
1735 else if (!(coro->cctx->flags & CC_TRACE)) 2061 else if (!(coro->cctx->flags & CC_TRACE))
1736 croak ("cannot enable tracing on coroutine with custom stack,"); 2062 croak ("cannot enable tracing on coroutine with custom stack, caught");
1737 2063
1738 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2064 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1739 } 2065 }
1740 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2066 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1741 { 2067 {
… …
1746 else 2072 else
1747 coro->slot->runops = RUNOPS_DEFAULT; 2073 coro->slot->runops = RUNOPS_DEFAULT;
1748 } 2074 }
1749} 2075}
1750 2076
2077static void
2078coro_push_av (pTHX_ AV *av, I32 gimme_v)
2079{
2080 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2081 {
2082 dSP;
2083
2084 if (gimme_v == G_SCALAR)
2085 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2086 else
2087 {
2088 int i;
2089 EXTEND (SP, AvFILLp (av) + 1);
2090
2091 for (i = 0; i <= AvFILLp (av); ++i)
2092 PUSHs (AvARRAY (av)[i]);
2093 }
2094
2095 PUTBACK;
2096 }
2097}
2098
2099static void
2100coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2101{
2102 if (!coro->on_destroy)
2103 coro->on_destroy = newAV ();
2104
2105 av_push (coro->on_destroy, cb);
2106}
2107
2108static void
2109slf_destroy_join (pTHX_ struct CoroSLF *frame)
2110{
2111 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2112}
2113
2114static int
2115slf_check_join (pTHX_ struct CoroSLF *frame)
2116{
2117 struct coro *coro = (struct coro *)frame->data;
2118
2119 if (!coro->status)
2120 return 1;
2121
2122 frame->destroy = 0;
2123
2124 coro_push_av (aTHX_ coro->status, GIMME_V);
2125
2126 SvREFCNT_dec ((SV *)coro->hv);
2127
2128 return 0;
2129}
2130
2131static void
2132slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2133{
2134 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2135
2136 if (items > 1)
2137 croak ("join called with too many arguments");
2138
2139 if (coro->status)
2140 frame->prepare = prepare_nop;
2141 else
2142 {
2143 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2144 frame->prepare = prepare_schedule;
2145 }
2146
2147 frame->check = slf_check_join;
2148 frame->destroy = slf_destroy_join;
2149 frame->data = (void *)coro;
2150 SvREFCNT_inc (coro->hv);
2151}
2152
2153static void
2154coro_call_on_destroy (pTHX_ struct coro *coro)
2155{
2156 AV *od = coro->on_destroy;
2157
2158 if (!od)
2159 return;
2160
2161 coro->on_destroy = 0;
2162 sv_2mortal ((SV *)od);
2163
2164 while (AvFILLp (od) >= 0)
2165 {
2166 SV *cb = sv_2mortal (av_pop (od));
2167
2168 /* coro hv's (and only hv's at the moment) are supported as well */
2169 if (SvSTATEhv_p (aTHX_ cb))
2170 api_ready (aTHX_ cb);
2171 else
2172 {
2173 dSP; /* don't disturb outer sp */
2174 PUSHMARK (SP);
2175
2176 if (coro->status)
2177 {
2178 PUTBACK;
2179 coro_push_av (aTHX_ coro->status, G_ARRAY);
2180 SPAGAIN;
2181 }
2182
2183 PUTBACK;
2184 call_sv (cb, G_VOID | G_DISCARD);
2185 }
2186 }
2187}
2188
2189static void
2190coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2191{
2192 AV *av;
2193
2194 if (coro->status)
2195 {
2196 av = coro->status;
2197 av_clear (av);
2198 }
2199 else
2200 av = coro->status = newAV ();
2201
2202 /* items are actually not so common, so optimise for this case */
2203 if (items)
2204 {
2205 int i;
2206
2207 av_extend (av, items - 1);
2208
2209 for (i = 0; i < items; ++i)
2210 av_push (av, SvREFCNT_inc_NN (arg [i]));
2211 }
2212}
2213
2214static void
2215slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2216{
2217 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2218 api_ready (aTHX_ sv_manager);
2219
2220 frame->prepare = prepare_schedule;
2221 frame->check = slf_check_repeat;
2222
2223 /* as a minor optimisation, we could unwind all stacks here */
2224 /* but that puts extra pressure on pp_slf, and is not worth much */
2225 /*coro_unwind_stacks (aTHX);*/
2226}
2227
2228static void
2229slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2230{
2231 HV *coro_hv = (HV *)SvRV (coro_current);
2232
2233 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2234 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2235}
2236
2237static void
2238slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2239{
2240 HV *coro_hv;
2241 struct coro *coro;
2242
2243 if (items <= 0)
2244 croak ("Coro::cancel called without coro object,");
2245
2246 coro = SvSTATE (arg [0]);
2247 coro_hv = coro->hv;
2248
2249 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2250
2251 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2252 {
2253 /* coro currently busy cancelling something, so just notify it */
2254 coro->slf_frame.data = (void *)coro;
2255
2256 frame->prepare = prepare_nop;
2257 frame->check = slf_check_nop;
2258 }
2259 else if (coro_hv == (HV *)SvRV (coro_current))
2260 {
2261 /* cancelling the current coro is allowed, and equals terminate */
2262 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2263 }
2264 else
2265 {
2266 struct coro *self = SvSTATE_current;
2267
2268 if (!self)
2269 croak ("Coro::cancel called outside of thread content,");
2270
2271 /* otherwise we cancel directly, purely for speed reasons
2272 * unfortunately, this requires some magic trickery, as
2273 * somebody else could cancel us, so we have to fight the cancellation.
2274 * this is ugly, and hopefully fully worth the extra speed.
2275 * besides, I can't get the slow-but-safe version working...
2276 */
2277 slf_frame.data = 0;
2278 self->flags |= CF_NOCANCEL;
2279 coro_state_destroy (aTHX_ coro);
2280 self->flags &= ~CF_NOCANCEL;
2281
2282 if (slf_frame.data)
2283 {
2284 /* while we were busy we have been cancelled, so terminate */
2285 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2286 }
2287 else
2288 {
2289 frame->prepare = prepare_nop;
2290 frame->check = slf_check_nop;
2291 }
2292 }
2293}
2294
2295static int
2296slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2297{
2298 frame->prepare = 0;
2299 coro_unwind_stacks (aTHX);
2300
2301 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2302
2303 return 1;
2304}
2305
2306static int
2307safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2308{
2309 if (coro->cctx)
2310 croak ("coro inside C callback, unable to cancel at this time, caught");
2311
2312 if (coro->flags & CF_NEW)
2313 {
2314 coro_set_status (aTHX_ coro, arg, items);
2315 coro_state_destroy (aTHX_ coro);
2316 }
2317 else
2318 {
2319 if (!coro->slf_frame.prepare)
2320 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2321
2322 slf_destroy (aTHX_ coro);
2323
2324 coro_set_status (aTHX_ coro, arg, items);
2325 coro->slf_frame.prepare = prepare_nop;
2326 coro->slf_frame.check = slf_check_safe_cancel;
2327
2328 api_ready (aTHX_ (SV *)coro->hv);
2329 }
2330
2331 return 1;
2332}
2333
2334/*****************************************************************************/
2335/* async pool handler */
2336
2337static int
2338slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2339{
2340 HV *hv = (HV *)SvRV (coro_current);
2341 struct coro *coro = (struct coro *)frame->data;
2342
2343 if (!coro->invoke_cb)
2344 return 1; /* loop till we have invoke */
2345 else
2346 {
2347 hv_store (hv, "desc", sizeof ("desc") - 1,
2348 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2349
2350 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2351
2352 {
2353 dSP;
2354 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2355 PUTBACK;
2356 }
2357
2358 SvREFCNT_dec (GvAV (PL_defgv));
2359 GvAV (PL_defgv) = coro->invoke_av;
2360 coro->invoke_av = 0;
2361
2362 return 0;
2363 }
2364}
2365
2366static void
2367slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2368{
2369 HV *hv = (HV *)SvRV (coro_current);
2370 struct coro *coro = SvSTATE_hv ((SV *)hv);
2371
2372 if (ecb_expect_true (coro->saved_deffh))
2373 {
2374 /* subsequent iteration */
2375 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2376 coro->saved_deffh = 0;
2377
2378 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2379 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2380 {
2381 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2382 return;
2383 }
2384 else
2385 {
2386 av_clear (GvAV (PL_defgv));
2387 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2388
2389 coro->prio = 0;
2390
2391 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2392 api_trace (aTHX_ coro_current, 0);
2393
2394 frame->prepare = prepare_schedule;
2395 av_push (av_async_pool, SvREFCNT_inc (hv));
2396 }
2397 }
2398 else
2399 {
2400 /* first iteration, simply fall through */
2401 frame->prepare = prepare_nop;
2402 }
2403
2404 frame->check = slf_check_pool_handler;
2405 frame->data = (void *)coro;
2406}
2407
1751/*****************************************************************************/ 2408/*****************************************************************************/
1752/* rouse callback */ 2409/* rouse callback */
1753 2410
1754#define CORO_MAGIC_type_rouse PERL_MAGIC_ext 2411#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1755 2412
1756static void 2413static void
1757coro_rouse_callback (pTHX_ CV *cv) 2414coro_rouse_callback (pTHX_ CV *cv)
1758{ 2415{
1759 dXSARGS; 2416 dXSARGS;
1760 SV *data = (SV *)GENSUB_ARG; 2417 SV *data = (SV *)S_GENSUB_ARG;
1761 2418
1762 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2419 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1763 { 2420 {
1764 /* first call, set args */ 2421 /* first call, set args */
1765 int i; 2422 SV *coro = SvRV (data);
1766 AV *av = newAV (); 2423 AV *av = newAV ();
1767 SV *coro = SvRV (data);
1768 2424
1769 SvRV_set (data, (SV *)av); 2425 SvRV_set (data, (SV *)av);
1770 api_ready (aTHX_ coro);
1771 SvREFCNT_dec (coro);
1772 2426
1773 /* better take a full copy of the arguments */ 2427 /* better take a full copy of the arguments */
1774 while (items--) 2428 while (items--)
1775 av_store (av, items, newSVsv (ST (items))); 2429 av_store (av, items, newSVsv (ST (items)));
2430
2431 api_ready (aTHX_ coro);
2432 SvREFCNT_dec (coro);
1776 } 2433 }
1777 2434
1778 XSRETURN_EMPTY; 2435 XSRETURN_EMPTY;
1779} 2436}
1780 2437
1781static int 2438static int
1782slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2439slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1783{ 2440{
1784 SV *data = (SV *)frame->data; 2441 SV *data = (SV *)frame->data;
1785 2442
1786 if (CORO_THROW) 2443 if (CORO_THROW)
1787 return 0; 2444 return 0;
1788 2445
1789 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2446 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1790 return 1; 2447 return 1;
… …
1797 2454
1798 EXTEND (SP, AvFILLp (av) + 1); 2455 EXTEND (SP, AvFILLp (av) + 1);
1799 for (i = 0; i <= AvFILLp (av); ++i) 2456 for (i = 0; i <= AvFILLp (av); ++i)
1800 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2457 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1801 2458
1802 /* we have stolen the elements, so ste length to zero and free */ 2459 /* we have stolen the elements, so set length to zero and free */
1803 AvFILLp (av) = -1; 2460 AvFILLp (av) = -1;
1804 av_undef (av); 2461 av_undef (av);
1805 2462
1806 PUTBACK; 2463 PUTBACK;
1807 } 2464 }
… …
1826 cb = sv_2mortal (coro->rouse_cb); 2483 cb = sv_2mortal (coro->rouse_cb);
1827 coro->rouse_cb = 0; 2484 coro->rouse_cb = 0;
1828 } 2485 }
1829 2486
1830 if (!SvROK (cb) 2487 if (!SvROK (cb)
1831 || SvTYPE (SvRV (cb)) != SVt_PVCV 2488 || SvTYPE (SvRV (cb)) != SVt_PVCV
1832 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2489 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1833 croak ("Coro::rouse_wait called with illegal callback argument,"); 2490 croak ("Coro::rouse_wait called with illegal callback argument,");
1834 2491
1835 { 2492 {
1836 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2493 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1837 SV *data = (SV *)GENSUB_ARG; 2494 SV *data = (SV *)S_GENSUB_ARG;
1838 2495
1839 frame->data = (void *)data; 2496 frame->data = (void *)data;
1840 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2497 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1841 frame->check = slf_check_rouse_wait; 2498 frame->check = slf_check_rouse_wait;
1842 } 2499 }
… …
1846coro_new_rouse_cb (pTHX) 2503coro_new_rouse_cb (pTHX)
1847{ 2504{
1848 HV *hv = (HV *)SvRV (coro_current); 2505 HV *hv = (HV *)SvRV (coro_current);
1849 struct coro *coro = SvSTATE_hv (hv); 2506 struct coro *coro = SvSTATE_hv (hv);
1850 SV *data = newRV_inc ((SV *)hv); 2507 SV *data = newRV_inc ((SV *)hv);
1851 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2508 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
1852 2509
1853 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2510 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1854 SvREFCNT_dec (data); /* magicext increases the refcount */ 2511 SvREFCNT_dec (data); /* magicext increases the refcount */
1855 2512
1856 SvREFCNT_dec (coro->rouse_cb); 2513 SvREFCNT_dec (coro->rouse_cb);
… …
1914 frame->prepare = prepare_schedule; 2571 frame->prepare = prepare_schedule;
1915 frame->check = slf_check_nop; 2572 frame->check = slf_check_nop;
1916} 2573}
1917 2574
1918static void 2575static void
2576slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2577{
2578 struct coro *next = (struct coro *)slf_frame.data;
2579
2580 SvREFCNT_inc_NN (next->hv);
2581 prepare_schedule_to (aTHX_ ta, next);
2582}
2583
2584static void
2585slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2586{
2587 if (!items)
2588 croak ("Coro::schedule_to expects a coroutine argument, caught");
2589
2590 frame->data = (void *)SvSTATE (arg [0]);
2591 frame->prepare = slf_prepare_schedule_to;
2592 frame->check = slf_check_nop;
2593}
2594
2595static void
2596slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2597{
2598 api_ready (aTHX_ SvRV (coro_current));
2599
2600 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2601}
2602
2603static void
1919slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2604slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1920{ 2605{
1921 frame->prepare = prepare_cede; 2606 frame->prepare = prepare_cede;
1922 frame->check = slf_check_nop; 2607 frame->check = slf_check_nop;
1923} 2608}
… …
1925static void 2610static void
1926slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2611slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1927{ 2612{
1928 frame->prepare = prepare_cede_notself; 2613 frame->prepare = prepare_cede_notself;
1929 frame->check = slf_check_nop; 2614 frame->check = slf_check_nop;
2615}
2616
2617/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2618static void
2619slf_destroy (pTHX_ struct coro *coro)
2620{
2621 struct CoroSLF frame = coro->slf_frame;
2622
2623 /*
2624 * The on_destroy below most likely is from an SLF call.
2625 * Since by definition the SLF call will not finish when we destroy
2626 * the coro, we will have to force-finish it here, otherwise
2627 * cleanup functions cannot call SLF functions.
2628 */
2629 coro->slf_frame.prepare = 0;
2630
2631 /* this callback is reserved for slf functions needing to do cleanup */
2632 if (frame.destroy && frame.prepare && !PL_dirty)
2633 frame.destroy (aTHX_ &frame);
1930} 2634}
1931 2635
1932/* 2636/*
1933 * these not obviously related functions are all rolled into one 2637 * these not obviously related functions are all rolled into one
1934 * function to increase chances that they all will call transfer with the same 2638 * function to increase chances that they all will call transfer with the same
… …
1941 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2645 I32 checkmark; /* mark SP to see how many elements check has pushed */
1942 2646
1943 /* set up the slf frame, unless it has already been set-up */ 2647 /* set up the slf frame, unless it has already been set-up */
1944 /* the latter happens when a new coro has been started */ 2648 /* the latter happens when a new coro has been started */
1945 /* or when a new cctx was attached to an existing coroutine */ 2649 /* or when a new cctx was attached to an existing coroutine */
1946 if (expect_true (!slf_frame.prepare)) 2650 if (ecb_expect_true (!slf_frame.prepare))
1947 { 2651 {
1948 /* first iteration */ 2652 /* first iteration */
1949 dSP; 2653 dSP;
1950 SV **arg = PL_stack_base + TOPMARK + 1; 2654 SV **arg = PL_stack_base + TOPMARK + 1;
1951 int items = SP - arg; /* args without function object */ 2655 int items = SP - arg; /* args without function object */
… …
1992 while (slf_frame.check (aTHX_ &slf_frame)); 2696 while (slf_frame.check (aTHX_ &slf_frame));
1993 2697
1994 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2698 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1995 2699
1996 /* exception handling */ 2700 /* exception handling */
1997 if (expect_false (CORO_THROW)) 2701 if (ecb_expect_false (CORO_THROW))
1998 { 2702 {
1999 SV *exception = sv_2mortal (CORO_THROW); 2703 SV *exception = sv_2mortal (CORO_THROW);
2000 2704
2001 CORO_THROW = 0; 2705 CORO_THROW = 0;
2002 sv_setsv (ERRSV, exception); 2706 sv_setsv (ERRSV, exception);
2003 croak (0); 2707 croak (0);
2004 } 2708 }
2005 2709
2006 /* return value handling - mostly like entersub */ 2710 /* return value handling - mostly like entersub */
2007 /* make sure we put something on the stack in scalar context */ 2711 /* make sure we put something on the stack in scalar context */
2008 if (GIMME_V == G_SCALAR) 2712 if (GIMME_V == G_SCALAR
2713 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2009 { 2714 {
2010 dSP; 2715 dSP;
2011 SV **bot = PL_stack_base + checkmark; 2716 SV **bot = PL_stack_base + checkmark;
2012 2717
2013 if (sp == bot) /* too few, push undef */ 2718 if (sp == bot) /* too few, push undef */
2014 bot [1] = &PL_sv_undef; 2719 bot [1] = &PL_sv_undef;
2015 else if (sp != bot + 1) /* too many, take last one */ 2720 else /* too many, take last one */
2016 bot [1] = *sp; 2721 bot [1] = *sp;
2017 2722
2018 SP = bot + 1; 2723 SP = bot + 1;
2019 2724
2020 PUTBACK; 2725 PUTBACK;
… …
2053 if (PL_op->op_flags & OPf_STACKED) 2758 if (PL_op->op_flags & OPf_STACKED)
2054 { 2759 {
2055 if (items > slf_arga) 2760 if (items > slf_arga)
2056 { 2761 {
2057 slf_arga = items; 2762 slf_arga = items;
2058 free (slf_argv); 2763 Safefree (slf_argv);
2059 slf_argv = malloc (slf_arga * sizeof (SV *)); 2764 New (0, slf_argv, slf_arga, SV *);
2060 } 2765 }
2061 2766
2062 slf_argc = items; 2767 slf_argc = items;
2063 2768
2064 for (i = 0; i < items; ++i) 2769 for (i = 0; i < items; ++i)
… …
2066 } 2771 }
2067 else 2772 else
2068 slf_argc = 0; 2773 slf_argc = 0;
2069 2774
2070 PL_op->op_ppaddr = pp_slf; 2775 PL_op->op_ppaddr = pp_slf;
2071 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2776 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2072 2777
2073 PL_op = (OP *)&slf_restore; 2778 PL_op = (OP *)&slf_restore;
2779}
2780
2781/*****************************************************************************/
2782/* dynamic wind */
2783
2784static void
2785on_enterleave_call (pTHX_ SV *cb)
2786{
2787 dSP;
2788
2789 PUSHSTACK;
2790
2791 PUSHMARK (SP);
2792 PUTBACK;
2793 call_sv (cb, G_VOID | G_DISCARD);
2794 SPAGAIN;
2795
2796 POPSTACK;
2797}
2798
2799static SV *
2800coro_avp_pop_and_free (pTHX_ AV **avp)
2801{
2802 AV *av = *avp;
2803 SV *res = av_pop (av);
2804
2805 if (AvFILLp (av) < 0)
2806 {
2807 *avp = 0;
2808 SvREFCNT_dec (av);
2809 }
2810
2811 return res;
2812}
2813
2814static void
2815coro_pop_on_enter (pTHX_ void *coro)
2816{
2817 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2818 SvREFCNT_dec (cb);
2819}
2820
2821static void
2822coro_pop_on_leave (pTHX_ void *coro)
2823{
2824 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2825 on_enterleave_call (aTHX_ sv_2mortal (cb));
2074} 2826}
2075 2827
2076/*****************************************************************************/ 2828/*****************************************************************************/
2077/* PerlIO::cede */ 2829/* PerlIO::cede */
2078 2830
… …
2080{ 2832{
2081 PerlIOBuf base; 2833 PerlIOBuf base;
2082 NV next, every; 2834 NV next, every;
2083} PerlIOCede; 2835} PerlIOCede;
2084 2836
2085static IV 2837static IV ecb_cold
2086PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2838PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2087{ 2839{
2088 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2840 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2089 2841
2090 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2842 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2091 self->next = nvtime () + self->every; 2843 self->next = nvtime () + self->every;
2092 2844
2093 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2845 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2094} 2846}
2095 2847
2096static SV * 2848static SV * ecb_cold
2097PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2849PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2098{ 2850{
2099 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2851 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2100 2852
2101 return newSVnv (self->every); 2853 return newSVnv (self->every);
… …
2152/* Coro::Semaphore & Coro::Signal */ 2904/* Coro::Semaphore & Coro::Signal */
2153 2905
2154static SV * 2906static SV *
2155coro_waitarray_new (pTHX_ int count) 2907coro_waitarray_new (pTHX_ int count)
2156{ 2908{
2157 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2909 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2158 AV *av = newAV (); 2910 AV *av = newAV ();
2159 SV **ary; 2911 SV **ary;
2160 2912
2161 /* unfortunately, building manually saves memory */ 2913 /* unfortunately, building manually saves memory */
2162 Newx (ary, 2, SV *); 2914 Newx (ary, 2, SV *);
2163 AvALLOC (av) = ary; 2915 AvALLOC (av) = ary;
2916#if PERL_VERSION_ATLEAST (5,10,0)
2164 /*AvARRAY (av) = ary;*/ 2917 AvARRAY (av) = ary;
2918#else
2165 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ 2919 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2920 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2921 SvPVX ((SV *)av) = (char *)ary;
2922#endif
2166 AvMAX (av) = 1; 2923 AvMAX (av) = 1;
2167 AvFILLp (av) = 0; 2924 AvFILLp (av) = 0;
2168 ary [0] = newSViv (count); 2925 ary [0] = newSViv (count);
2169 2926
2170 return newRV_noinc ((SV *)av); 2927 return newRV_noinc ((SV *)av);
… …
2208 SvREFCNT_dec (cb); 2965 SvREFCNT_dec (cb);
2209 } 2966 }
2210} 2967}
2211 2968
2212static void 2969static void
2213coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2970coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2214{ 2971{
2215 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2972 /* call $sem->adjust (0) to possibly wake up some other waiters */
2216 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2973 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2217} 2974}
2218 2975
2219static int 2976static int
2220slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2977slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2221{ 2978{
2222 AV *av = (AV *)frame->data; 2979 AV *av = (AV *)frame->data;
2223 SV *count_sv = AvARRAY (av)[0]; 2980 SV *count_sv = AvARRAY (av)[0];
2981 SV *coro_hv = SvRV (coro_current);
2982
2983 frame->destroy = 0;
2224 2984
2225 /* if we are about to throw, don't actually acquire the lock, just throw */ 2985 /* if we are about to throw, don't actually acquire the lock, just throw */
2226 if (CORO_THROW) 2986 if (ecb_expect_false (CORO_THROW))
2987 {
2988 /* we still might be responsible for the semaphore, so wake up others */
2989 coro_semaphore_adjust (aTHX_ av, 0);
2990
2227 return 0; 2991 return 0;
2992 }
2228 else if (SvIVX (count_sv) > 0) 2993 else if (SvIVX (count_sv) > 0)
2229 { 2994 {
2230 SvSTATE_current->on_destroy = 0;
2231
2232 if (acquire) 2995 if (acquire)
2233 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2996 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2234 else 2997 else
2235 coro_semaphore_adjust (aTHX_ av, 0); 2998 coro_semaphore_adjust (aTHX_ av, 0);
2236 2999
… …
2240 { 3003 {
2241 int i; 3004 int i;
2242 /* if we were woken up but can't down, we look through the whole */ 3005 /* if we were woken up but can't down, we look through the whole */
2243 /* waiters list and only add us if we aren't in there already */ 3006 /* waiters list and only add us if we aren't in there already */
2244 /* this avoids some degenerate memory usage cases */ 3007 /* this avoids some degenerate memory usage cases */
2245 3008 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2246 for (i = 1; i <= AvFILLp (av); ++i)
2247 if (AvARRAY (av)[i] == SvRV (coro_current)) 3009 if (AvARRAY (av)[i] == coro_hv)
2248 return 1; 3010 return 1;
2249 3011
2250 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3012 av_push (av, SvREFCNT_inc (coro_hv));
2251 return 1; 3013 return 1;
2252 } 3014 }
2253} 3015}
2254 3016
2255static int 3017static int
… …
2278 { 3040 {
2279 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3041 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2280 3042
2281 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3043 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2282 frame->prepare = prepare_schedule; 3044 frame->prepare = prepare_schedule;
2283
2284 /* to avoid race conditions when a woken-up coro gets terminated */ 3045 /* to avoid race conditions when a woken-up coro gets terminated */
2285 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3046 /* we arrange for a temporary on_destroy that calls adjust (0) */
2286 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3047 frame->destroy = coro_semaphore_destroy;
2287 } 3048 }
2288} 3049}
2289 3050
2290static void 3051static void
2291slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3052slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2299{ 3060{
2300 if (items >= 2) 3061 if (items >= 2)
2301 { 3062 {
2302 /* callback form */ 3063 /* callback form */
2303 AV *av = (AV *)SvRV (arg [0]); 3064 AV *av = (AV *)SvRV (arg [0]);
2304 CV *cb_cv = coro_sv_2cv (arg [1]); 3065 SV *cb_cv = s_get_cv_croak (arg [1]);
2305 3066
2306 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); 3067 av_push (av, SvREFCNT_inc_NN (cb_cv));
2307 3068
2308 if (SvIVX (AvARRAY (av)[0]) > 0) 3069 if (SvIVX (AvARRAY (av)[0]) > 0)
2309 coro_semaphore_adjust (aTHX_ av, 0); 3070 coro_semaphore_adjust (aTHX_ av, 0);
2310 3071
2311 frame->prepare = prepare_nop; 3072 frame->prepare = prepare_nop;
… …
2335 AvARRAY (av)[0] = AvARRAY (av)[1]; 3096 AvARRAY (av)[0] = AvARRAY (av)[1];
2336 AvARRAY (av)[1] = cb; 3097 AvARRAY (av)[1] = cb;
2337 3098
2338 cb = av_shift (av); 3099 cb = av_shift (av);
2339 3100
3101 if (SvTYPE (cb) == SVt_PVCV)
3102 {
3103 dSP;
3104 PUSHMARK (SP);
3105 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3106 PUTBACK;
3107 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3108 }
3109 else
3110 {
2340 api_ready (aTHX_ cb); 3111 api_ready (aTHX_ cb);
2341 sv_setiv (cb, 0); /* signal waiter */ 3112 sv_setiv (cb, 0); /* signal waiter */
3113 }
3114
2342 SvREFCNT_dec (cb); 3115 SvREFCNT_dec (cb);
2343 3116
2344 --count; 3117 --count;
2345 } 3118 }
2346} 3119}
… …
2355static void 3128static void
2356slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3129slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2357{ 3130{
2358 AV *av = (AV *)SvRV (arg [0]); 3131 AV *av = (AV *)SvRV (arg [0]);
2359 3132
3133 if (items >= 2)
3134 {
3135 SV *cb_cv = s_get_cv_croak (arg [1]);
3136 av_push (av, SvREFCNT_inc_NN (cb_cv));
3137
2360 if (SvIVX (AvARRAY (av)[0])) 3138 if (SvIVX (AvARRAY (av)[0]))
3139 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3140
3141 frame->prepare = prepare_nop;
3142 frame->check = slf_check_nop;
3143 }
3144 else if (SvIVX (AvARRAY (av)[0]))
2361 { 3145 {
2362 SvIVX (AvARRAY (av)[0]) = 0; 3146 SvIVX (AvARRAY (av)[0]) = 0;
2363 frame->prepare = prepare_nop; 3147 frame->prepare = prepare_nop;
2364 frame->check = slf_check_nop; 3148 frame->check = slf_check_nop;
2365 } 3149 }
2366 else 3150 else
2367 { 3151 {
2368 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3152 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2369 3153
2370 av_push (av, waiter); 3154 av_push (av, waiter);
2371 3155
2372 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3156 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2373 frame->prepare = prepare_schedule; 3157 frame->prepare = prepare_schedule;
… …
2391 3175
2392static void 3176static void
2393coro_aio_callback (pTHX_ CV *cv) 3177coro_aio_callback (pTHX_ CV *cv)
2394{ 3178{
2395 dXSARGS; 3179 dXSARGS;
2396 AV *state = (AV *)GENSUB_ARG; 3180 AV *state = (AV *)S_GENSUB_ARG;
2397 SV *coro = av_pop (state); 3181 SV *coro = av_pop (state);
2398 SV *data_sv = newSV (sizeof (struct io_state)); 3182 SV *data_sv = newSV (sizeof (struct io_state));
2399 3183
2400 av_extend (state, items); 3184 av_extend (state, items - 1);
2401 3185
2402 sv_upgrade (data_sv, SVt_PV); 3186 sv_upgrade (data_sv, SVt_PV);
2403 SvCUR_set (data_sv, sizeof (struct io_state)); 3187 SvCUR_set (data_sv, sizeof (struct io_state));
2404 SvPOK_only (data_sv); 3188 SvPOK_only (data_sv);
2405 3189
… …
2437 /* it quickly returns */ 3221 /* it quickly returns */
2438 if (CORO_THROW) 3222 if (CORO_THROW)
2439 return 0; 3223 return 0;
2440 3224
2441 /* one element that is an RV? repeat! */ 3225 /* one element that is an RV? repeat! */
2442 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3226 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2443 return 1; 3227 return 1;
2444 3228
2445 /* restore status */ 3229 /* restore status */
2446 { 3230 {
2447 SV *data_sv = av_pop (state); 3231 SV *data_sv = av_pop (state);
… …
2486 dSP; 3270 dSP;
2487 3271
2488 static SV *prio_cv; 3272 static SV *prio_cv;
2489 static SV *prio_sv; 3273 static SV *prio_sv;
2490 3274
2491 if (expect_false (!prio_cv)) 3275 if (ecb_expect_false (!prio_cv))
2492 { 3276 {
2493 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3277 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2494 prio_sv = newSViv (0); 3278 prio_sv = newSViv (0);
2495 } 3279 }
2496 3280
… …
2515 3299
2516 for (i = 0; i < items; ++i) 3300 for (i = 0; i < items; ++i)
2517 PUSHs (arg [i]); 3301 PUSHs (arg [i]);
2518 3302
2519 /* now push the callback closure */ 3303 /* now push the callback closure */
2520 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3304 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2521 3305
2522 /* now call the AIO function - we assume our request is uncancelable */ 3306 /* now call the AIO function - we assume our request is uncancelable */
2523 PUTBACK; 3307 PUTBACK;
2524 call_sv ((SV *)req, G_VOID | G_DISCARD); 3308 call_sv ((SV *)req, G_VOID | G_DISCARD);
2525 } 3309 }
2526 3310
2527 /* now that the requets is going, we loop toll we have a result */ 3311 /* now that the request is going, we loop till we have a result */
2528 frame->data = (void *)state; 3312 frame->data = (void *)state;
2529 frame->prepare = prepare_schedule; 3313 frame->prepare = prepare_schedule;
2530 frame->check = slf_check_aio_req; 3314 frame->check = slf_check_aio_req;
2531} 3315}
2532 3316
… …
2540 XSRETURN_EMPTY; 3324 XSRETURN_EMPTY;
2541} 3325}
2542 3326
2543/*****************************************************************************/ 3327/*****************************************************************************/
2544 3328
3329#if CORO_CLONE
3330# include "clone.c"
3331#endif
3332
3333/*****************************************************************************/
3334
3335static SV *
3336coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3337{
3338 SV *coro_sv;
3339 struct coro *coro;
3340 MAGIC *mg;
3341 HV *hv;
3342 SV *cb;
3343 int i;
3344
3345 if (argc > 0)
3346 {
3347 cb = s_get_cv_croak (argv [0]);
3348
3349 if (!is_coro)
3350 {
3351 if (CvISXSUB (cb))
3352 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3353
3354 if (!CvROOT (cb))
3355 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3356 }
3357 }
3358
3359 Newz (0, coro, 1, struct coro);
3360 coro->args = newAV ();
3361 coro->flags = CF_NEW;
3362
3363 if (coro_first) coro_first->prev = coro;
3364 coro->next = coro_first;
3365 coro_first = coro;
3366
3367 coro->hv = hv = newHV ();
3368 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3369 mg->mg_flags |= MGf_DUP;
3370 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3371
3372 if (argc > 0)
3373 {
3374 av_extend (coro->args, argc + is_coro - 1);
3375
3376 if (is_coro)
3377 {
3378 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3379 cb = (SV *)cv_coro_run;
3380 }
3381
3382 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3383
3384 for (i = 1; i < argc; i++)
3385 av_push (coro->args, newSVsv (argv [i]));
3386 }
3387
3388 return coro_sv;
3389}
3390
3391#ifndef __cplusplus
3392ecb_cold XS(boot_Coro__State);
3393#endif
3394
3395#if CORO_JIT
3396
3397static void ecb_noinline ecb_cold
3398pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3399{
3400 dSP;
3401 AV *av = newAV ();
3402
3403 av_store (av, 3, newSVuv (d));
3404 av_store (av, 2, newSVuv (c));
3405 av_store (av, 1, newSVuv (b));
3406 av_store (av, 0, newSVuv (a));
3407
3408 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3409
3410 PUTBACK;
3411}
3412
3413static void ecb_noinline ecb_cold
3414jit_init (pTHX)
3415{
3416 dSP;
3417 SV *load, *save;
3418 char *map_base;
3419 char *load_ptr, *save_ptr;
3420 STRLEN load_len, save_len, map_len;
3421 int count;
3422
3423 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3424
3425 PUSHMARK (SP);
3426 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3427 #include "state.h"
3428 count = call_pv ("Coro::State::_jit", G_ARRAY);
3429 SPAGAIN;
3430
3431 save = POPs; save_ptr = SvPVbyte (save, save_len);
3432 load = POPs; load_ptr = SvPVbyte (load, load_len);
3433
3434 map_len = load_len + save_len + 16;
3435
3436 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3437
3438 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3439
3440 load_perl_slots = (load_save_perl_slots_type)map_base;
3441 memcpy (map_base, load_ptr, load_len);
3442
3443 map_base += (load_len + 15) & ~15;
3444
3445 save_perl_slots = (load_save_perl_slots_type)map_base;
3446 memcpy (map_base, save_ptr, save_len);
3447
3448 /* we are good citizens and try to make the page read-only, so the evil evil */
3449 /* hackers might have it a bit more difficult */
3450 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3451
3452 PUTBACK;
3453 eval_pv ("undef &Coro::State::_jit", 1);
3454}
3455
3456#endif
3457
2545MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3458MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2546 3459
2547PROTOTYPES: DISABLE 3460PROTOTYPES: DISABLE
2548 3461
2549BOOT: 3462BOOT:
2550{ 3463{
3464#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3465#include "state.h"
2551#ifdef USE_ITHREADS 3466#ifdef USE_ITHREADS
2552# if CORO_PTHREAD 3467# if CORO_PTHREAD
2553 coro_thx = PERL_GET_CONTEXT; 3468 coro_thx = PERL_GET_CONTEXT;
2554# endif 3469# endif
2555#endif 3470#endif
2556 BOOT_PAGESIZE; 3471 /* perl defines these to check for existance first, but why it doesn't */
3472 /* just create them one at init time is not clear to me, except for */
3473 /* programs trying to delete them, but... */
3474 /* anyway, we declare this as invalid and make sure they are initialised here */
3475 DEFSV;
3476 ERRSV;
3477
3478 cctx_current = cctx_new_empty ();
2557 3479
2558 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3480 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2559 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3481 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2560 3482
2561 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3483 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2581 3503
2582 { 3504 {
2583 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3505 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2584 3506
2585 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3507 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2586 hv_store_ent (PL_custom_op_names, slf, 3508 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2587 newSVpv ("coro_slf", 0), 0);
2588 3509
2589 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3510 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2590 hv_store_ent (PL_custom_op_descs, slf, 3511 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2591 newSVpv ("coro schedule like function", 0), 0);
2592 } 3512 }
2593 3513
2594 coroapi.ver = CORO_API_VERSION; 3514 coroapi.ver = CORO_API_VERSION;
2595 coroapi.rev = CORO_API_REVISION; 3515 coroapi.rev = CORO_API_REVISION;
2596 3516
… …
2601 coroapi.prepare_nop = prepare_nop; 3521 coroapi.prepare_nop = prepare_nop;
2602 coroapi.prepare_schedule = prepare_schedule; 3522 coroapi.prepare_schedule = prepare_schedule;
2603 coroapi.prepare_cede = prepare_cede; 3523 coroapi.prepare_cede = prepare_cede;
2604 coroapi.prepare_cede_notself = prepare_cede_notself; 3524 coroapi.prepare_cede_notself = prepare_cede_notself;
2605 3525
2606 { 3526 time_init (aTHX);
2607 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2608 3527
2609 if (!svp) croak ("Time::HiRes is required");
2610 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2611
2612 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2613 }
2614
2615 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3528 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3529#if CORO_JIT
3530 PUTBACK;
3531 jit_init (aTHX);
3532 SPAGAIN;
3533#endif
2616} 3534}
2617 3535
2618SV * 3536SV *
2619new (char *klass, ...) 3537new (SV *klass, ...)
2620 ALIAS: 3538 ALIAS:
2621 Coro::new = 1 3539 Coro::new = 1
2622 CODE: 3540 CODE:
2623{ 3541 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2624 struct coro *coro; 3542 OUTPUT:
2625 MAGIC *mg;
2626 HV *hv;
2627 CV *cb;
2628 int i;
2629
2630 if (items > 1)
2631 {
2632 cb = coro_sv_2cv (ST (1));
2633
2634 if (!ix)
2635 {
2636 if (CvISXSUB (cb))
2637 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2638
2639 if (!CvROOT (cb))
2640 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2641 }
2642 }
2643
2644 Newz (0, coro, 1, struct coro);
2645 coro->args = newAV ();
2646 coro->flags = CF_NEW;
2647
2648 if (coro_first) coro_first->prev = coro;
2649 coro->next = coro_first;
2650 coro_first = coro;
2651
2652 coro->hv = hv = newHV ();
2653 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2654 mg->mg_flags |= MGf_DUP;
2655 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2656
2657 if (items > 1)
2658 {
2659 av_extend (coro->args, items - 1 + ix);
2660
2661 if (ix)
2662 {
2663 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2664 cb = cv_coro_run;
2665 }
2666
2667 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2668
2669 for (i = 2; i < items; i++)
2670 av_push (coro->args, newSVsv (ST (i)));
2671 }
2672}
2673 OUTPUT:
2674 RETVAL 3543 RETVAL
2675 3544
2676void 3545void
2677transfer (...) 3546transfer (...)
2678 PROTOTYPE: $$ 3547 PROTOTYPE: $$
2679 CODE: 3548 CODE:
2680 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3549 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2681 3550
2682bool 3551SV *
2683_destroy (SV *coro_sv) 3552clone (Coro::State coro)
2684 CODE: 3553 CODE:
2685 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3554{
3555#if CORO_CLONE
3556 struct coro *ncoro = coro_clone (aTHX_ coro);
3557 MAGIC *mg;
3558 /* TODO: too much duplication */
3559 ncoro->hv = newHV ();
3560 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3561 mg->mg_flags |= MGf_DUP;
3562 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3563#else
3564 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3565#endif
3566}
2686 OUTPUT: 3567 OUTPUT:
2687 RETVAL 3568 RETVAL
2688
2689void
2690_exit (int code)
2691 PROTOTYPE: $
2692 CODE:
2693 _exit (code);
2694 3569
2695int 3570int
2696cctx_stacksize (int new_stacksize = 0) 3571cctx_stacksize (int new_stacksize = 0)
2697 PROTOTYPE: ;$ 3572 PROTOTYPE: ;$
2698 CODE: 3573 CODE:
… …
2734void 3609void
2735list () 3610list ()
2736 PROTOTYPE: 3611 PROTOTYPE:
2737 PPCODE: 3612 PPCODE:
2738{ 3613{
2739 struct coro *coro; 3614 struct coro *coro;
2740 for (coro = coro_first; coro; coro = coro->next) 3615 for (coro = coro_first; coro; coro = coro->next)
2741 if (coro->hv) 3616 if (coro->hv)
2742 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3617 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2743} 3618}
2744 3619
… …
2748 eval = 1 3623 eval = 1
2749 CODE: 3624 CODE:
2750{ 3625{
2751 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3626 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2752 { 3627 {
2753 struct coro temp; 3628 struct coro *current = SvSTATE_current;
3629 struct CoroSLF slf_save;
2754 3630
2755 if (!(coro->flags & CF_RUNNING)) 3631 if (current != coro)
2756 { 3632 {
2757 PUTBACK; 3633 PUTBACK;
2758 save_perl (aTHX_ &temp); 3634 save_perl (aTHX_ current);
2759 load_perl (aTHX_ coro); 3635 load_perl (aTHX_ coro);
3636 /* the coro is most likely in an active SLF call.
3637 * while not strictly required (the code we execute is
3638 * not allowed to call any SLF functions), it's cleaner
3639 * to reinitialise the slf_frame and restore it later.
3640 * This might one day allow us to actually do SLF calls
3641 * from code executed here.
3642 */
3643 slf_save = slf_frame;
3644 slf_frame.prepare = 0;
3645 SPAGAIN;
2760 } 3646 }
2761 3647
2762 {
2763 dSP;
2764 ENTER;
2765 SAVETMPS;
2766 PUTBACK;
2767 PUSHSTACK; 3648 PUSHSTACK;
3649
2768 PUSHMARK (SP); 3650 PUSHMARK (SP);
3651 PUTBACK;
2769 3652
2770 if (ix) 3653 if (ix)
2771 eval_sv (coderef, 0); 3654 eval_sv (coderef, 0);
2772 else 3655 else
2773 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3656 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2774 3657
2775 POPSTACK; 3658 POPSTACK;
2776 SPAGAIN; 3659 SPAGAIN;
2777 FREETMPS;
2778 LEAVE;
2779 PUTBACK;
2780 }
2781 3660
2782 if (!(coro->flags & CF_RUNNING)) 3661 if (current != coro)
2783 { 3662 {
3663 PUTBACK;
3664 slf_frame = slf_save;
2784 save_perl (aTHX_ coro); 3665 save_perl (aTHX_ coro);
2785 load_perl (aTHX_ &temp); 3666 load_perl (aTHX_ current);
2786 SPAGAIN; 3667 SPAGAIN;
2787 } 3668 }
2788 } 3669 }
2789} 3670}
2790 3671
… …
2793 PROTOTYPE: $ 3674 PROTOTYPE: $
2794 ALIAS: 3675 ALIAS:
2795 is_ready = CF_READY 3676 is_ready = CF_READY
2796 is_running = CF_RUNNING 3677 is_running = CF_RUNNING
2797 is_new = CF_NEW 3678 is_new = CF_NEW
2798 is_destroyed = CF_DESTROYED 3679 is_destroyed = CF_ZOMBIE
3680 is_zombie = CF_ZOMBIE
3681 is_suspended = CF_SUSPENDED
2799 CODE: 3682 CODE:
2800 RETVAL = boolSV (coro->flags & ix); 3683 RETVAL = boolSV (coro->flags & ix);
2801 OUTPUT: 3684 OUTPUT:
2802 RETVAL 3685 RETVAL
2803 3686
2804void 3687void
2805throw (Coro::State self, SV *throw = &PL_sv_undef) 3688throw (SV *self, SV *exception = &PL_sv_undef)
2806 PROTOTYPE: $;$ 3689 PROTOTYPE: $;$
2807 CODE: 3690 CODE:
2808{ 3691{
3692 struct coro *coro = SvSTATE (self);
2809 struct coro *current = SvSTATE_current; 3693 struct coro *current = SvSTATE_current;
2810 SV **throwp = self == current ? &CORO_THROW : &self->except; 3694 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2811 SvREFCNT_dec (*throwp); 3695 SvREFCNT_dec (*exceptionp);
2812 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3696 SvGETMAGIC (exception);
3697 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3698
3699 api_ready (aTHX_ self);
2813} 3700}
2814 3701
2815void 3702void
2816api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3703api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2817 PROTOTYPE: $;$ 3704 PROTOTYPE: $;$
… …
2819 3706
2820SV * 3707SV *
2821has_cctx (Coro::State coro) 3708has_cctx (Coro::State coro)
2822 PROTOTYPE: $ 3709 PROTOTYPE: $
2823 CODE: 3710 CODE:
2824 RETVAL = boolSV (!!coro->cctx); 3711 /* maybe manage the running flag differently */
3712 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2825 OUTPUT: 3713 OUTPUT:
2826 RETVAL 3714 RETVAL
2827 3715
2828int 3716int
2829is_traced (Coro::State coro) 3717is_traced (Coro::State coro)
… …
2849 3737
2850void 3738void
2851force_cctx () 3739force_cctx ()
2852 PROTOTYPE: 3740 PROTOTYPE:
2853 CODE: 3741 CODE:
2854 SvSTATE_current->cctx->idle_sp = 0; 3742 cctx_current->idle_sp = 0;
2855 3743
2856void 3744void
2857swap_defsv (Coro::State self) 3745swap_defsv (Coro::State self)
2858 PROTOTYPE: $ 3746 PROTOTYPE: $
2859 ALIAS: 3747 ALIAS:
… …
2867 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3755 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2868 3756
2869 SV *tmp = *src; *src = *dst; *dst = tmp; 3757 SV *tmp = *src; *src = *dst; *dst = tmp;
2870 } 3758 }
2871 3759
3760void
3761cancel (Coro::State self)
3762 CODE:
3763 coro_state_destroy (aTHX_ self);
3764
3765SV *
3766enable_times (int enabled = enable_times)
3767 CODE:
3768{
3769 RETVAL = boolSV (enable_times);
3770
3771 if (enabled != enable_times)
3772 {
3773 enable_times = enabled;
3774
3775 coro_times_update ();
3776 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3777 }
3778}
3779 OUTPUT:
3780 RETVAL
3781
3782void
3783times (Coro::State self)
3784 PPCODE:
3785{
3786 struct coro *current = SvSTATE (coro_current);
3787
3788 if (ecb_expect_false (current == self))
3789 {
3790 coro_times_update ();
3791 coro_times_add (SvSTATE (coro_current));
3792 }
3793
3794 EXTEND (SP, 2);
3795 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3796 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3797
3798 if (ecb_expect_false (current == self))
3799 coro_times_sub (SvSTATE (coro_current));
3800}
3801
3802void
3803swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3804 CODE:
3805{
3806 struct coro *current = SvSTATE_current;
3807
3808 if (current == coro)
3809 SWAP_SVS (current);
3810
3811 if (!coro->swap_sv)
3812 coro->swap_sv = newAV ();
3813
3814 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3815 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3816
3817 if (current == coro)
3818 SWAP_SVS (current);
3819}
3820
2872 3821
2873MODULE = Coro::State PACKAGE = Coro 3822MODULE = Coro::State PACKAGE = Coro
2874 3823
2875BOOT: 3824BOOT:
2876{ 3825{
2877 int i;
2878
2879 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2880 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3826 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2881 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3827 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2882 cv_coro_run = get_cv (aTHX_ "Coro::_terminate", GV_ADD); 3828 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2883 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); 3829 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2884 SvREADONLY_on (coro_current); 3830 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3831 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3832 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3833 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3834
3835 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3836 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3837 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3838 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2885 3839
2886 coro_stash = gv_stashpv ("Coro", TRUE); 3840 coro_stash = gv_stashpv ("Coro", TRUE);
2887 3841
2888 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3842 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2889 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3843 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2890 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3844 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2891 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3845 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2892 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3846 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2893 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3847 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2894
2895 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2896 coro_ready[i] = newAV ();
2897 3848
2898 { 3849 {
2899 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3850 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2900 3851
2901 coroapi.schedule = api_schedule; 3852 coroapi.schedule = api_schedule;
3853 coroapi.schedule_to = api_schedule_to;
2902 coroapi.cede = api_cede; 3854 coroapi.cede = api_cede;
2903 coroapi.cede_notself = api_cede_notself; 3855 coroapi.cede_notself = api_cede_notself;
2904 coroapi.ready = api_ready; 3856 coroapi.ready = api_ready;
2905 coroapi.is_ready = api_is_ready; 3857 coroapi.is_ready = api_is_ready;
2906 coroapi.nready = coro_nready; 3858 coroapi.nready = coro_nready;
… …
2910 sv_setiv (sv, (IV)&coroapi); 3862 sv_setiv (sv, (IV)&coroapi);
2911 SvREADONLY_on (sv); 3863 SvREADONLY_on (sv);
2912 } 3864 }
2913} 3865}
2914 3866
3867SV *
3868async (...)
3869 PROTOTYPE: &@
3870 CODE:
3871 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3872 api_ready (aTHX_ RETVAL);
3873 OUTPUT:
3874 RETVAL
3875
3876void
3877_destroy (Coro::State coro)
3878 CODE:
3879 /* used by the manager thread */
3880 coro_state_destroy (aTHX_ coro);
3881
3882void
3883on_destroy (Coro::State coro, SV *cb)
3884 CODE:
3885 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3886
3887void
3888join (...)
3889 CODE:
3890 CORO_EXECUTE_SLF_XS (slf_init_join);
3891
3892void
3893terminate (...)
3894 CODE:
3895 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3896
3897void
3898cancel (...)
3899 CODE:
3900 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3901
3902int
3903safe_cancel (Coro::State self, ...)
3904 C_ARGS: aTHX_ self, &ST (1), items - 1
3905
2915void 3906void
2916schedule (...) 3907schedule (...)
2917 CODE: 3908 CODE:
2918 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3909 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3910
3911void
3912schedule_to (...)
3913 CODE:
3914 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3915
3916void
3917cede_to (...)
3918 CODE:
3919 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2919 3920
2920void 3921void
2921cede (...) 3922cede (...)
2922 CODE: 3923 CODE:
2923 CORO_EXECUTE_SLF_XS (slf_init_cede); 3924 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2937void 3938void
2938_set_readyhook (SV *hook) 3939_set_readyhook (SV *hook)
2939 PROTOTYPE: $ 3940 PROTOTYPE: $
2940 CODE: 3941 CODE:
2941 SvREFCNT_dec (coro_readyhook); 3942 SvREFCNT_dec (coro_readyhook);
3943 SvGETMAGIC (hook);
3944 if (SvOK (hook))
3945 {
2942 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3946 coro_readyhook = newSVsv (hook);
3947 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3948 }
3949 else
3950 {
3951 coro_readyhook = 0;
3952 CORO_READYHOOK = 0;
3953 }
2943 3954
2944int 3955int
2945prio (Coro::State coro, int newprio = 0) 3956prio (Coro::State coro, int newprio = 0)
2946 PROTOTYPE: $;$ 3957 PROTOTYPE: $;$
2947 ALIAS: 3958 ALIAS:
… …
2953 if (items > 1) 3964 if (items > 1)
2954 { 3965 {
2955 if (ix) 3966 if (ix)
2956 newprio = coro->prio - newprio; 3967 newprio = coro->prio - newprio;
2957 3968
2958 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3969 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2959 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3970 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2960 3971
2961 coro->prio = newprio; 3972 coro->prio = newprio;
2962 } 3973 }
2963} 3974}
2964 OUTPUT: 3975 OUTPUT:
… …
2978 CODE: 3989 CODE:
2979 RETVAL = coro_nready; 3990 RETVAL = coro_nready;
2980 OUTPUT: 3991 OUTPUT:
2981 RETVAL 3992 RETVAL
2982 3993
2983# for async_pool speedup
2984void 3994void
2985_pool_1 (SV *cb) 3995suspend (Coro::State self)
3996 PROTOTYPE: $
2986 CODE: 3997 CODE:
2987{ 3998 self->flags |= CF_SUSPENDED;
2988 HV *hv = (HV *)SvRV (coro_current);
2989 struct coro *coro = SvSTATE_hv ((SV *)hv);
2990 AV *defav = GvAV (PL_defgv);
2991 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2992 AV *invoke_av;
2993 int i, len;
2994 3999
2995 if (!invoke) 4000void
4001resume (Coro::State self)
4002 PROTOTYPE: $
4003 CODE:
4004 self->flags &= ~CF_SUSPENDED;
4005
4006void
4007_pool_handler (...)
4008 CODE:
4009 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4010
4011void
4012async_pool (SV *cv, ...)
4013 PROTOTYPE: &@
4014 PPCODE:
4015{
4016 HV *hv = (HV *)av_pop (av_async_pool);
4017 AV *av = newAV ();
4018 SV *cb = ST (0);
4019 int i;
4020
4021 av_extend (av, items - 2);
4022 for (i = 1; i < items; ++i)
4023 av_push (av, SvREFCNT_inc_NN (ST (i)));
4024
4025 if ((SV *)hv == &PL_sv_undef)
2996 { 4026 {
2997 SV *old = PL_diehook; 4027 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2998 PL_diehook = 0; 4028 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2999 SvREFCNT_dec (old); 4029 SvREFCNT_dec (sv);
3000 croak ("\3async_pool terminate\2\n");
3001 } 4030 }
3002 4031
3003 SvREFCNT_dec (coro->saved_deffh);
3004 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
3005
3006 hv_store (hv, "desc", sizeof ("desc") - 1,
3007 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
3008
3009 invoke_av = (AV *)SvRV (invoke);
3010 len = av_len (invoke_av);
3011
3012 sv_setsv (cb, AvARRAY (invoke_av)[0]);
3013
3014 if (len > 0)
3015 { 4032 {
3016 av_fill (defav, len - 1); 4033 struct coro *coro = SvSTATE_hv (hv);
3017 for (i = 0; i < len; ++i) 4034
3018 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4035 assert (!coro->invoke_cb);
4036 assert (!coro->invoke_av);
4037 coro->invoke_cb = SvREFCNT_inc (cb);
4038 coro->invoke_av = av;
3019 } 4039 }
3020}
3021 4040
3022void 4041 api_ready (aTHX_ (SV *)hv);
3023_pool_2 (SV *cb)
3024 CODE:
3025{
3026 HV *hv = (HV *)SvRV (coro_current);
3027 struct coro *coro = SvSTATE_hv ((SV *)hv);
3028 4042
3029 sv_setsv (cb, &PL_sv_undef); 4043 if (GIMME_V != G_VOID)
3030 4044 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3031 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4045 else
3032 coro->saved_deffh = 0;
3033
3034 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
3035 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
3036 {
3037 SV *old = PL_diehook;
3038 PL_diehook = 0;
3039 SvREFCNT_dec (old); 4046 SvREFCNT_dec (hv);
3040 croak ("\3async_pool terminate\2\n");
3041 }
3042
3043 av_clear (GvAV (PL_defgv));
3044 hv_store (hv, "desc", sizeof ("desc") - 1,
3045 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
3046
3047 coro->prio = 0;
3048
3049 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
3050 api_trace (aTHX_ coro_current, 0);
3051
3052 av_push (av_async_pool, newSVsv (coro_current));
3053} 4047}
3054 4048
3055SV * 4049SV *
3056rouse_cb () 4050rouse_cb ()
3057 PROTOTYPE: 4051 PROTOTYPE:
… …
3064rouse_wait (...) 4058rouse_wait (...)
3065 PROTOTYPE: ;$ 4059 PROTOTYPE: ;$
3066 PPCODE: 4060 PPCODE:
3067 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4061 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3068 4062
4063void
4064on_enter (SV *block)
4065 ALIAS:
4066 on_leave = 1
4067 PROTOTYPE: &
4068 CODE:
4069{
4070 struct coro *coro = SvSTATE_current;
4071 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4072
4073 block = s_get_cv_croak (block);
4074
4075 if (!*avp)
4076 *avp = newAV ();
4077
4078 av_push (*avp, SvREFCNT_inc (block));
4079
4080 if (!ix)
4081 on_enterleave_call (aTHX_ block);
4082
4083 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4084 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4085 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4086}
4087
3069 4088
3070MODULE = Coro::State PACKAGE = PerlIO::cede 4089MODULE = Coro::State PACKAGE = PerlIO::cede
3071 4090
3072BOOT: 4091BOOT:
3073 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4092 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3076MODULE = Coro::State PACKAGE = Coro::Semaphore 4095MODULE = Coro::State PACKAGE = Coro::Semaphore
3077 4096
3078SV * 4097SV *
3079new (SV *klass, SV *count = 0) 4098new (SV *klass, SV *count = 0)
3080 CODE: 4099 CODE:
4100{
4101 int semcnt = 1;
4102
4103 if (count)
4104 {
4105 SvGETMAGIC (count);
4106
4107 if (SvOK (count))
4108 semcnt = SvIV (count);
4109 }
4110
3081 RETVAL = sv_bless ( 4111 RETVAL = sv_bless (
3082 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4112 coro_waitarray_new (aTHX_ semcnt),
3083 GvSTASH (CvGV (cv)) 4113 GvSTASH (CvGV (cv))
3084 ); 4114 );
4115}
3085 OUTPUT: 4116 OUTPUT:
3086 RETVAL 4117 RETVAL
3087 4118
3088# helper for Coro::Channel 4119# helper for Coro::Channel and others
3089SV * 4120SV *
3090_alloc (int count) 4121_alloc (int count)
3091 CODE: 4122 CODE:
3092 RETVAL = coro_waitarray_new (aTHX_ count); 4123 RETVAL = coro_waitarray_new (aTHX_ count);
3093 OUTPUT: 4124 OUTPUT:
… …
3135 XSRETURN_NO; 4166 XSRETURN_NO;
3136} 4167}
3137 4168
3138void 4169void
3139waiters (SV *self) 4170waiters (SV *self)
3140 PPCODE: 4171 PPCODE:
3141{ 4172{
3142 AV *av = (AV *)SvRV (self); 4173 AV *av = (AV *)SvRV (self);
3143 int wcount = AvFILLp (av) + 1 - 1; 4174 int wcount = AvFILLp (av) + 1 - 1;
3144 4175
3145 if (GIMME_V == G_SCALAR) 4176 if (GIMME_V == G_SCALAR)
… …
3151 for (i = 1; i <= wcount; ++i) 4182 for (i = 1; i <= wcount; ++i)
3152 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4183 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3153 } 4184 }
3154} 4185}
3155 4186
4187MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4188
4189void
4190_may_delete (SV *sem, int count, unsigned int extra_refs)
4191 PPCODE:
4192{
4193 AV *av = (AV *)SvRV (sem);
4194
4195 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4196 && AvFILLp (av) == 0 /* no waiters, just count */
4197 && SvIV (AvARRAY (av)[0]) == count)
4198 XSRETURN_YES;
4199
4200 XSRETURN_NO;
4201}
4202
3156MODULE = Coro::State PACKAGE = Coro::Signal 4203MODULE = Coro::State PACKAGE = Coro::Signal
3157 4204
3158SV * 4205SV *
3159new (SV *klass) 4206new (SV *klass)
3160 CODE: 4207 CODE:
… …
3172 4219
3173void 4220void
3174broadcast (SV *self) 4221broadcast (SV *self)
3175 CODE: 4222 CODE:
3176{ 4223{
3177 AV *av = (AV *)SvRV (self); 4224 AV *av = (AV *)SvRV (self);
3178 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4225 coro_signal_wake (aTHX_ av, AvFILLp (av));
3179} 4226}
3180 4227
3181void 4228void
3182send (SV *self) 4229send (SV *self)
… …
3190 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4237 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3191} 4238}
3192 4239
3193IV 4240IV
3194awaited (SV *self) 4241awaited (SV *self)
3195 CODE: 4242 CODE:
3196 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4243 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3197 OUTPUT: 4244 OUTPUT:
3198 RETVAL 4245 RETVAL
3199 4246
3200 4247
… …
3205 4252
3206void 4253void
3207_schedule (...) 4254_schedule (...)
3208 CODE: 4255 CODE:
3209{ 4256{
3210 static int incede; 4257 static int incede;
3211 4258
3212 api_cede_notself (aTHX); 4259 api_cede_notself (aTHX);
3213 4260
3214 ++incede; 4261 ++incede;
3215 while (coro_nready >= incede && api_cede (aTHX)) 4262 while (coro_nready >= incede && api_cede (aTHX))
… …
3231 4278
3232void 4279void
3233_register (char *target, char *proto, SV *req) 4280_register (char *target, char *proto, SV *req)
3234 CODE: 4281 CODE:
3235{ 4282{
3236 CV *req_cv = coro_sv_2cv (req); 4283 SV *req_cv = s_get_cv_croak (req);
3237 /* newXSproto doesn't return the CV on 5.8 */ 4284 /* newXSproto doesn't return the CV on 5.8 */
3238 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4285 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3239 sv_setpv ((SV *)slf_cv, proto); 4286 sv_setpv ((SV *)slf_cv, proto);
3240 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4287 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3241} 4288}
3242 4289
4290MODULE = Coro::State PACKAGE = Coro::Select
4291
4292void
4293patch_pp_sselect ()
4294 CODE:
4295 if (!coro_old_pp_sselect)
4296 {
4297 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4298 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4299 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4300 }
4301
4302void
4303unpatch_pp_sselect ()
4304 CODE:
4305 if (coro_old_pp_sselect)
4306 {
4307 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4308 coro_old_pp_sselect = 0;
4309 }
4310
4311MODULE = Coro::State PACKAGE = Coro::Util
4312
4313void
4314_exit (int code)
4315 CODE:
4316 _exit (code);
4317
4318NV
4319time ()
4320 CODE:
4321 RETVAL = nvtime (aTHX);
4322 OUTPUT:
4323 RETVAL
4324
4325NV
4326gettimeofday ()
4327 PPCODE:
4328{
4329 UV tv [2];
4330 u2time (aTHX_ tv);
4331 EXTEND (SP, 2);
4332 PUSHs (sv_2mortal (newSVuv (tv [0])));
4333 PUSHs (sv_2mortal (newSVuv (tv [1])));
4334}
4335

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