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Comparing Coro/Coro/State.xs (file contents):
Revision 1.289 by root, Mon Nov 17 08:25:06 2008 UTC vs.
Revision 1.477 by root, Sat Feb 29 21:40:22 2020 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"
7
8#if CORO_UCONTEXT
9 #define CORO_BACKEND "ucontext"
10#elif CORO_SJLJ
11 #define CORO_BACKEND "sjlj"
12#elif CORO_LINUX
13 #define CORO_BACKEND "linux"
14#elif CORO_LOSER
15 #define CORO_BACKEND "loser"
16#elif CORO_FIBER
17 #define CORO_BACKEND "fiber"
18#elif CORO_IRIX
19 #define CORO_BACKEND "irix"
20#elif CORO_ASM
21 #define CORO_BACKEND "asm"
22#elif CORO_PTHREAD
23 #define CORO_BACKEND "pthread"
24#else
25 #define CORO_BACKEND "unknown"
26#endif
2 27
3#define PERL_NO_GET_CONTEXT 28#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 29#define PERL_EXT
5 30
6#include "EXTERN.h" 31#include "EXTERN.h"
7#include "perl.h" 32#include "perl.h"
8#include "XSUB.h" 33#include "XSUB.h"
9#include "perliol.h" 34#include "perliol.h"
10 35
11#include "patchlevel.h" 36#include "schmorp.h"
12 37
38#define ECB_NO_THREADS 1
39#define ECB_NO_LIBM 1
40#include "ecb.h"
41
42#include <stddef.h>
13#include <stdio.h> 43#include <stdio.h>
14#include <errno.h> 44#include <errno.h>
15#include <assert.h> 45#include <assert.h>
16 46
17#ifdef WIN32 47#ifndef SvREFCNT_dec_NN
48 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
49#endif
50
51#ifndef SvREFCNT_inc_NN
52 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
53#endif
54
55#ifndef SVs_PADSTALE
56# define SVs_PADSTALE 0
57#endif
58
59#ifdef PadARRAY
60# define NEWPADAPI 1
61# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
62#else
63typedef AV PADNAMELIST;
64# if !PERL_VERSION_ATLEAST(5,8,0)
65typedef AV PADLIST;
66typedef AV PAD;
67# endif
68# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
69# define PadlistMAX(pl) AvFILLp (pl)
70# define PadlistNAMES(pl) (*PadlistARRAY (pl))
71# define PadARRAY AvARRAY
72# define PadMAX AvFILLp
73# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
74#endif
75#ifndef PadnamelistREFCNT
76# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
77#endif
78#ifndef PadnamelistREFCNT_dec
79# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
80#endif
81
82/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
83/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
84#if PERL_VERSION_ATLEAST(5,19,0)
85# define SVt_BIND SVt_IV
86#endif
87
88#if defined(_WIN32)
89# undef HAS_GETTIMEOFDAY
18# undef setjmp 90# undef setjmp
19# undef longjmp 91# undef longjmp
20# undef _exit 92# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 93# define setjmp _setjmp /* deep magic */
22#else 94#else
23# include <inttypes.h> /* most portable stdint.h */ 95# include <inttypes.h> /* most portable stdint.h */
24#endif 96#endif
25 97
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 */ 98/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 99static int cctx_max_idle = 4;
55 100
56#define PERL_VERSION_ATLEAST(a,b,c) \ 101#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 102# 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 103#endif
116 104
117/* prefer perl internal functions over our own? */ 105/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 106#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 107# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 108#endif
121 109
122/* The next macros try to return the current stack pointer, in an as 110/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 111 * portable way as possible. */
124#if __GNUC__ >= 4 112#if __GNUC__ >= 4
113# define dSTACKLEVEL int stacklevel_dummy
125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 114# define STACKLEVEL __builtin_frame_address (0)
126#else 115#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 116# define dSTACKLEVEL volatile void *stacklevel
117# define STACKLEVEL ((void *)&stacklevel)
128#endif 118#endif
129 119
130#define IN_DESTRUCT (PL_main_cv == Nullcv) 120#define IN_DESTRUCT PL_dirty
131
132#if __GNUC__ >= 3
133# define attribute(x) __attribute__(x)
134# define expect(expr,value) __builtin_expect ((expr),(value))
135# define INLINE static inline
136#else
137# define attribute(x)
138# define expect(expr,value) (expr)
139# define INLINE static
140#endif
141
142#define expect_false(expr) expect ((expr) != 0, 0)
143#define expect_true(expr) expect ((expr) != 0, 1)
144
145#define NOINLINE attribute ((noinline))
146 121
147#include "CoroAPI.h" 122#include "CoroAPI.h"
123#define GCoroAPI (&coroapi) /* very sneaky */
148 124
149#ifdef USE_ITHREADS 125#ifdef USE_ITHREADS
150# if CORO_PTHREAD 126# if CORO_PTHREAD
151static void *coro_thx; 127static void *coro_thx;
152# endif 128# endif
153#endif 129#endif
154 130
131#ifdef __linux
132# include <time.h> /* for timespec */
133# include <syscall.h> /* for SYS_* */
134# ifdef SYS_clock_gettime
135# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
136# define CORO_CLOCK_MONOTONIC 1
137# define CORO_CLOCK_THREAD_CPUTIME_ID 3
138# endif
139#endif
140
141/* one off bugfix for perl 5.22 */
142#if PERL_VERSION_ATLEAST(5,22,0) && !PERL_VERSION_ATLEAST(5,24,0)
143# undef PadlistNAMES
144# define PadlistNAMES(pl) *((PADNAMELIST **)PadlistARRAY (pl))
145#endif
146
147#if PERL_VERSION_ATLEAST(5,24,0)
148# define SUB_ARGARRAY PL_curpad[0]
149#else
150# define SUB_ARGARRAY (SV *)cx->blk_sub.argarray
151#endif
152
153/* perl usually suppresses asserts. for debugging, we sometimes force it to be on */
154#if 0
155# undef NDEBUG
156# include <assert.h>
157#endif
158
155static double (*nvtime)(); /* so why doesn't it take void? */ 159static double (*nvtime)(); /* so why doesn't it take void? */
160static void (*u2time)(pTHX_ UV ret[2]);
161
162/* we hijack an hopefully unused CV flag for our purposes */
163#define CVf_SLF 0x4000
164static OP *pp_slf (pTHX);
165static void slf_destroy (pTHX_ struct coro *coro);
156 166
157static U32 cctx_gen; 167static U32 cctx_gen;
158static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 171static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
164 174
175static AV *av_destroy; /* destruction queue */
176static SV *sv_manager; /* the manager coro */
177static SV *sv_idle; /* $Coro::idle */
178
165static GV *irsgv; /* $/ */ 179static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 180static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 181static SV *rv_diehook;
168static SV *rv_warnhook; 182static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */
170 183
171/* async_pool helper stuff */ 184/* async_pool helper stuff */
172static SV *sv_pool_rss; 185static SV *sv_pool_rss;
173static SV *sv_pool_size; 186static SV *sv_pool_size;
187static SV *sv_async_pool_idle; /* description string */
174static AV *av_async_pool; 188static AV *av_async_pool; /* idle pool */
189static SV *sv_Coro; /* class string */
190static CV *cv_pool_handler;
175 191
176/* Coro::AnyEvent */ 192/* Coro::AnyEvent */
177static SV *sv_activity; 193static SV *sv_activity;
178 194
195/* enable processtime/realtime profiling */
196static char enable_times;
197typedef U32 coro_ts[2];
198static coro_ts time_real, time_cpu;
199static char times_valid;
200
179static struct coro_cctx *cctx_first; 201static struct coro_cctx *cctx_first;
180static int cctx_count, cctx_idle; 202static int cctx_count, cctx_idle;
181 203
182enum { 204enum
205{
183 CC_MAPPED = 0x01, 206 CC_MAPPED = 0x01,
184 CC_NOREUSE = 0x02, /* throw this away after tracing */ 207 CC_NOREUSE = 0x02, /* throw this away after tracing */
185 CC_TRACE = 0x04, 208 CC_TRACE = 0x04,
186 CC_TRACE_SUB = 0x08, /* trace sub calls */ 209 CC_TRACE_SUB = 0x08, /* trace sub calls */
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 210 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
192typedef struct coro_cctx 215typedef struct coro_cctx
193{ 216{
194 struct coro_cctx *next; 217 struct coro_cctx *next;
195 218
196 /* the stack */ 219 /* the stack */
197 void *sptr; 220 struct coro_stack stack;
198 size_t ssize;
199 221
200 /* cpu state */ 222 /* cpu state */
201 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 223 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
224#ifndef NDEBUG
202 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 225 JMPENV *idle_te; /* same as idle_sp, but for top_env */
226#endif
203 JMPENV *top_env; 227 JMPENV *top_env;
204 coro_context cctx; 228 coro_context cctx;
205 229
206 U32 gen; 230 U32 gen;
207#if CORO_USE_VALGRIND 231#if CORO_USE_VALGRIND
208 int valgrind_id; 232 int valgrind_id;
209#endif 233#endif
210 unsigned char flags; 234 unsigned char flags;
211} coro_cctx; 235} coro_cctx;
212 236
237static coro_cctx *cctx_current; /* the currently running cctx */
238
239/*****************************************************************************/
240
241static MGVTBL coro_state_vtbl;
242
213enum { 243enum
244{
214 CF_RUNNING = 0x0001, /* coroutine is running */ 245 CF_RUNNING = 0x0001, /* coroutine is running */
215 CF_READY = 0x0002, /* coroutine is ready */ 246 CF_READY = 0x0002, /* coroutine is ready */
216 CF_NEW = 0x0004, /* has never been switched to */ 247 CF_NEW = 0x0004, /* has never been switched to */
217 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 248 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
249 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
250 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
218}; 251};
219 252
220/* the structure where most of the perl state is stored, overlaid on the cxstack */ 253/* the structure where most of the perl state is stored, overlaid on the cxstack */
221typedef struct 254typedef struct
222{ 255{
223 SV *defsv;
224 AV *defav;
225 SV *errsv;
226 SV *irsgv;
227#define VAR(name,type) type name; 256 #define VARx(name,expr,type) type name;
228# include "state.h" 257 #include "state.h"
229#undef VAR
230} perl_slots; 258} perl_slots;
231 259
260/* how many context stack entries do we need for perl_slots */
232#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 261#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
233 262
234/* this is a structure representing a perl-level coroutine */ 263/* this is a structure representing a perl-level coroutine */
235struct coro { 264struct coro
265{
236 /* the C coroutine allocated to this perl coroutine, if any */ 266 /* the C coroutine allocated to this perl coroutine, if any */
237 coro_cctx *cctx; 267 coro_cctx *cctx;
268
269 /* ready queue */
270 struct coro *next_ready;
238 271
239 /* state data */ 272 /* state data */
240 struct CoroSLF slf_frame; /* saved slf frame */ 273 struct CoroSLF slf_frame; /* saved slf frame */
241 AV *mainstack; 274 AV *mainstack;
242 perl_slots *slot; /* basically the saved sp */ 275 perl_slots *slot; /* basically the saved sp */
243 276
277 CV *startcv; /* the CV to execute */
244 AV *args; /* data associated with this coroutine (initial args) */ 278 AV *args; /* data associated with this coroutine (initial args) */
245 int refcnt; /* coroutines are refcounted, yes */
246 int flags; /* CF_ flags */ 279 int flags; /* CF_ flags */
247 HV *hv; /* the perl hash associated with this coro, if any */ 280 HV *hv; /* the perl hash associated with this coro, if any */
248 void (*on_destroy)(pTHX_ struct coro *coro);
249 281
250 /* statistics */ 282 /* statistics */
251 int usecount; /* number of transfers to this coro */ 283 int usecount; /* number of transfers to this coro */
252 284
253 /* coro process data */ 285 /* coro process data */
254 int prio; 286 int prio;
255 SV *throw; /* exception to be thrown */ 287 SV *except; /* exception to be thrown */
288 SV *rouse_cb; /* last rouse callback */
289 AV *on_destroy; /* callbacks or coros to notify on destroy */
290 AV *status; /* the exit status list */
256 291
257 /* async_pool */ 292 /* async_pool */
258 SV *saved_deffh; 293 SV *saved_deffh;
294 SV *invoke_cb;
295 AV *invoke_av;
296
297 /* on_enter/on_leave */
298 AV *on_enter; AV *on_enter_xs;
299 AV *on_leave; AV *on_leave_xs;
300
301 /* swap_sv */
302 AV *swap_sv;
303
304 /* times */
305 coro_ts t_cpu, t_real;
259 306
260 /* linked list */ 307 /* linked list */
261 struct coro *next, *prev; 308 struct coro *next, *prev;
262}; 309};
263 310
264typedef struct coro *Coro__State; 311typedef struct coro *Coro__State;
265typedef struct coro *Coro__State_or_hashref; 312typedef struct coro *Coro__State_or_hashref;
266 313
267/* the following variables are effectively part of the perl context */ 314/* the following variables are effectively part of the perl context */
268/* and get copied between struct coro and these variables */ 315/* and get copied between struct coro and these variables */
269/* the mainr easonw e don't support windows process emulation */ 316/* the main reason we don't support windows process emulation */
270static struct CoroSLF slf_frame; /* the current slf frame */ 317static struct CoroSLF slf_frame; /* the current slf frame */
271static SV *coro_throw;
272 318
273/** Coro ********************************************************************/ 319/** Coro ********************************************************************/
274 320
275#define PRIO_MAX 3 321#define CORO_PRIO_MAX 3
276#define PRIO_HIGH 1 322#define CORO_PRIO_HIGH 1
277#define PRIO_NORMAL 0 323#define CORO_PRIO_NORMAL 0
278#define PRIO_LOW -1 324#define CORO_PRIO_LOW -1
279#define PRIO_IDLE -3 325#define CORO_PRIO_IDLE -3
280#define PRIO_MIN -4 326#define CORO_PRIO_MIN -4
281 327
282/* for Coro.pm */ 328/* for Coro.pm */
283static SV *coro_current; 329static SV *coro_current;
284static SV *coro_readyhook; 330static SV *coro_readyhook;
285static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 331static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
332static CV *cv_coro_run;
286static struct coro *coro_first; 333static struct coro *coro_first;
287#define coro_nready coroapi.nready 334#define coro_nready coroapi.nready
288 335
336/** JIT *********************************************************************/
337
338#if CORO_JIT
339 /* APPLE doesn't have mmap though */
340 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
341 #ifndef CORO_JIT_TYPE
342 #if ECB_AMD64 && CORO_JIT_UNIXY
343 #define CORO_JIT_TYPE "amd64-unix"
344 #elif __i386 && CORO_JIT_UNIXY
345 #define CORO_JIT_TYPE "x86-unix"
346 #endif
347 #endif
348#endif
349
350#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
351 #undef CORO_JIT
352#endif
353
354#if CORO_JIT
355 typedef void (*load_save_perl_slots_type)(perl_slots *);
356 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
357#endif
358
359/** Coro::Select ************************************************************/
360
361static OP *(*coro_old_pp_sselect) (pTHX);
362static SV *coro_select_select;
363
364/* horrible hack, but if it works... */
365static OP *
366coro_pp_sselect (pTHX)
367{
368 dSP;
369 PUSHMARK (SP - 4); /* fake argument list */
370 XPUSHs (coro_select_select);
371 PUTBACK;
372
373 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
374 PL_op->op_flags |= OPf_STACKED;
375 PL_op->op_private = 0;
376 return PL_ppaddr [OP_ENTERSUB](aTHX);
377}
378
379/** time stuff **************************************************************/
380
381#ifdef HAS_GETTIMEOFDAY
382
383ecb_inline void
384coro_u2time (pTHX_ UV ret[2])
385{
386 struct timeval tv;
387 gettimeofday (&tv, 0);
388
389 ret [0] = tv.tv_sec;
390 ret [1] = tv.tv_usec;
391}
392
393ecb_inline double
394coro_nvtime (void)
395{
396 struct timeval tv;
397 gettimeofday (&tv, 0);
398
399 return tv.tv_sec + tv.tv_usec * 1e-6;
400}
401
402ecb_inline void
403time_init (pTHX)
404{
405 nvtime = coro_nvtime;
406 u2time = coro_u2time;
407}
408
409#else
410
411ecb_inline void
412time_init (pTHX)
413{
414 SV **svp;
415
416 require_pv ("Time/HiRes.pm");
417
418 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
419
420 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
421 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
422
423 nvtime = INT2PTR (double (*)(), SvIV (*svp));
424
425 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
426 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
427}
428
429#endif
430
289/** lowlevel stuff **********************************************************/ 431/** lowlevel stuff **********************************************************/
290 432
291static SV * 433static SV * ecb_noinline
292coro_get_sv (pTHX_ const char *name, int create) 434coro_get_sv (pTHX_ const char *name, int create)
293{ 435{
294#if PERL_VERSION_ATLEAST (5,10,0) 436#if PERL_VERSION_ATLEAST (5,10,0)
295 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 437 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
296 get_sv (name, create); 438 get_sv (name, create);
297#endif 439#endif
298 return get_sv (name, create); 440 return get_sv (name, create);
299} 441}
300 442
301static AV * 443static AV * ecb_noinline
302coro_get_av (pTHX_ const char *name, int create) 444coro_get_av (pTHX_ const char *name, int create)
303{ 445{
304#if PERL_VERSION_ATLEAST (5,10,0) 446#if PERL_VERSION_ATLEAST (5,10,0)
305 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 447 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
306 get_av (name, create); 448 get_av (name, create);
307#endif 449#endif
308 return get_av (name, create); 450 return get_av (name, create);
309} 451}
310 452
311static HV * 453static HV * ecb_noinline
312coro_get_hv (pTHX_ const char *name, int create) 454coro_get_hv (pTHX_ const char *name, int create)
313{ 455{
314#if PERL_VERSION_ATLEAST (5,10,0) 456#if PERL_VERSION_ATLEAST (5,10,0)
315 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 457 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
316 get_hv (name, create); 458 get_hv (name, create);
317#endif 459#endif
318 return get_hv (name, create); 460 return get_hv (name, create);
319} 461}
320 462
321static AV * 463ecb_inline void
464coro_times_update (void)
465{
466#ifdef coro_clock_gettime
467 struct timespec ts;
468
469 ts.tv_sec = ts.tv_nsec = 0;
470 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
471 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
472
473 ts.tv_sec = ts.tv_nsec = 0;
474 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
475 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
476#else
477 dTHX;
478 UV tv[2];
479
480 u2time (aTHX_ tv);
481 time_real [0] = tv [0];
482 time_real [1] = tv [1] * 1000;
483#endif
484}
485
486ecb_inline void
487coro_times_add (struct coro *c)
488{
489 c->t_real [1] += time_real [1];
490 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
491 c->t_real [0] += time_real [0];
492
493 c->t_cpu [1] += time_cpu [1];
494 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
495 c->t_cpu [0] += time_cpu [0];
496}
497
498ecb_inline void
499coro_times_sub (struct coro *c)
500{
501 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
502 c->t_real [1] -= time_real [1];
503 c->t_real [0] -= time_real [0];
504
505 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
506 c->t_cpu [1] -= time_cpu [1];
507 c->t_cpu [0] -= time_cpu [0];
508}
509
510/*****************************************************************************/
511/* magic glue */
512
513#define CORO_MAGIC_type_cv 26
514#define CORO_MAGIC_type_state PERL_MAGIC_ext
515
516#define CORO_MAGIC_NN(sv, type) \
517 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
518 ? SvMAGIC (sv) \
519 : mg_find (sv, type))
520
521#define CORO_MAGIC(sv, type) \
522 (ecb_expect_true (SvMAGIC (sv)) \
523 ? CORO_MAGIC_NN (sv, type) \
524 : 0)
525
526#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
527#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
528
529ecb_inline MAGIC *
530SvSTATEhv_p (pTHX_ SV *coro)
531{
532 MAGIC *mg;
533
534 if (ecb_expect_true (
535 SvTYPE (coro) == SVt_PVHV
536 && (mg = CORO_MAGIC_state (coro))
537 && mg->mg_virtual == &coro_state_vtbl
538 ))
539 return mg;
540
541 return 0;
542}
543
544ecb_inline struct coro *
545SvSTATE_ (pTHX_ SV *coro_sv)
546{
547 MAGIC *mg;
548
549 if (SvROK (coro_sv))
550 coro_sv = SvRV (coro_sv);
551
552 mg = SvSTATEhv_p (aTHX_ coro_sv);
553 if (!mg)
554 croak ("Coro::State object required");
555
556 return (struct coro *)mg->mg_ptr;
557}
558
559#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
560
561/* faster than SvSTATE, but expects a coroutine hv */
562#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
563#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
564
565/*****************************************************************************/
566/* padlist management and caching */
567
568ecb_inline PADLIST *
322coro_clone_padlist (pTHX_ CV *cv) 569coro_derive_padlist (pTHX_ CV *cv)
323{ 570{
324 AV *padlist = CvPADLIST (cv); 571 PADLIST *padlist = CvPADLIST (cv);
325 AV *newpadlist, *newpad; 572 PADLIST *newpadlist;
573 PADNAMELIST *padnames;
574 PAD *newpad;
575 PADOFFSET off = PadlistMAX (padlist) + 1;
326 576
327 newpadlist = newAV (); 577#if NEWPADAPI
578
579 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
580 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
581 while (!PadlistARRAY (padlist)[off - 1])
582 --off;
583
584 Perl_pad_push (aTHX_ padlist, off);
585
586 newpad = PadlistARRAY (padlist)[off];
587 PadlistARRAY (padlist)[off] = 0;
588
589#else
590
591#if PERL_VERSION_ATLEAST (5,10,0)
592 Perl_pad_push (aTHX_ padlist, off);
593#else
594 Perl_pad_push (aTHX_ padlist, off, 1);
595#endif
596
597 newpad = PadlistARRAY (padlist)[off];
598 PadlistMAX (padlist) = off - 1;
599
600#endif
601
602 newPADLIST (newpadlist);
603#if !PERL_VERSION_ATLEAST(5,15,3)
604 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
328 AvREAL_off (newpadlist); 605 AvREAL_off (newpadlist);
329#if PERL_VERSION_ATLEAST (5,10,0)
330 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
331#else
332 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
333#endif 606#endif
334 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
335 --AvFILLp (padlist);
336 607
337 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 608 /* Already extended to 2 elements by newPADLIST. */
338 av_store (newpadlist, 1, (SV *)newpad); 609 PadlistMAX (newpadlist) = 1;
610
611 padnames = PadlistNAMES (padlist);
612 ++PadnamelistREFCNT (padnames);
613 PadlistNAMES (newpadlist) = padnames;
614
615 PadlistARRAY (newpadlist)[1] = newpad;
339 616
340 return newpadlist; 617 return newpadlist;
341} 618}
342 619
343static void 620ecb_inline void
344free_padlist (pTHX_ AV *padlist) 621free_padlist (pTHX_ PADLIST *padlist)
345{ 622{
346 /* may be during global destruction */ 623 /* may be during global destruction */
347 if (SvREFCNT (padlist)) 624 if (!IN_DESTRUCT)
348 { 625 {
349 I32 i = AvFILLp (padlist); 626 I32 i = PadlistMAX (padlist);
350 while (i >= 0) 627
628 while (i > 0) /* special-case index 0 */
351 { 629 {
352 SV **svp = av_fetch (padlist, i--, FALSE); 630 /* we try to be extra-careful here */
631 PAD *pad = PadlistARRAY (padlist)[i--];
632
353 if (svp) 633 if (pad)
354 { 634 {
355 SV *sv; 635 I32 j = PadMAX (pad);
356 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 636
637 while (j >= 0)
357 SvREFCNT_dec (sv); 638 SvREFCNT_dec (PadARRAY (pad)[j--]);
358 639
640 PadMAX (pad) = -1;
359 SvREFCNT_dec (*svp); 641 SvREFCNT_dec (pad);
360 } 642 }
361 } 643 }
362 644
645 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
646
647#if NEWPADAPI
648 Safefree (PadlistARRAY (padlist));
649 Safefree (padlist);
650#else
651 AvFILLp (padlist) = -1;
652 AvREAL_off (padlist);
363 SvREFCNT_dec ((SV*)padlist); 653 SvREFCNT_dec ((SV*)padlist);
654#endif
364 } 655 }
365} 656}
366 657
367static int 658static int
368coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 659coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
369{ 660{
370 AV *padlist; 661 PADLIST *padlist;
371 AV *av = (AV *)mg->mg_obj; 662 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
663 size_t len = *(size_t *)mg->mg_ptr;
372 664
373 /* casting is fun. */ 665 /* perl manages to free our internal AV and _then_ call us */
374 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 666 if (IN_DESTRUCT)
667 return 0;
668
669 while (len--)
375 free_padlist (aTHX_ padlist); 670 free_padlist (aTHX_ padlists[len]);
376
377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
378 671
379 return 0; 672 return 0;
380} 673}
381
382#define CORO_MAGIC_type_cv 26
383#define CORO_MAGIC_type_state PERL_MAGIC_ext
384 674
385static MGVTBL coro_cv_vtbl = { 675static MGVTBL coro_cv_vtbl = {
386 0, 0, 0, 0, 676 0, 0, 0, 0,
387 coro_cv_free 677 coro_cv_free
388}; 678};
389 679
390#define CORO_MAGIC_NN(sv, type) \
391 (expect_true (SvMAGIC (sv)->mg_type == type) \
392 ? SvMAGIC (sv) \
393 : mg_find (sv, type))
394
395#define CORO_MAGIC(sv, type) \
396 (expect_true (SvMAGIC (sv)) \
397 ? CORO_MAGIC_NN (sv, type) \
398 : 0)
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* faster than SvSTATE, but expects a coroutine hv */
430#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
432
433/* the next two functions merely cache the padlists */ 680/* the next two functions merely cache the padlists */
434static void 681ecb_inline void
435get_padlist (pTHX_ CV *cv) 682get_padlist (pTHX_ CV *cv)
436{ 683{
437 MAGIC *mg = CORO_MAGIC_cv (cv); 684 MAGIC *mg = CORO_MAGIC_cv (cv);
438 AV *av; 685 size_t *lenp;
439 686
440 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 687 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
441 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 688 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
442 else 689 else
443 { 690 {
444#if CORO_PREFER_PERL_FUNCTIONS 691#if CORO_PREFER_PERL_FUNCTIONS
445 /* this is probably cleaner? but also slower! */ 692 /* this is probably cleaner? but also slower! */
446 /* in practise, it seems to be less stable */ 693 /* in practise, it seems to be less stable */
447 CV *cp = Perl_cv_clone (cv); 694 CV *cp = Perl_cv_clone (aTHX_ cv);
448 CvPADLIST (cv) = CvPADLIST (cp); 695 CvPADLIST (cv) = CvPADLIST (cp);
449 CvPADLIST (cp) = 0; 696 CvPADLIST (cp) = 0;
450 SvREFCNT_dec (cp); 697 SvREFCNT_dec (cp);
451#else 698#else
452 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 699 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
453#endif 700#endif
454 } 701 }
455} 702}
456 703
457static void 704ecb_inline void
458put_padlist (pTHX_ CV *cv) 705put_padlist (pTHX_ CV *cv)
459{ 706{
460 MAGIC *mg = CORO_MAGIC_cv (cv); 707 MAGIC *mg = CORO_MAGIC_cv (cv);
461 AV *av;
462 708
463 if (expect_false (!mg)) 709 if (ecb_expect_false (!mg))
710 {
464 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 711 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
712 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
713 mg->mg_len = 1; /* so mg_free frees mg_ptr */
714 }
715 else
716 Renew (mg->mg_ptr,
717 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
718 char);
465 719
466 av = (AV *)mg->mg_obj; 720 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
467
468 if (expect_false (AvFILLp (av) >= AvMAX (av)))
469 av_extend (av, AvMAX (av) + 1);
470
471 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
472} 721}
473 722
474/** load & save, init *******************************************************/ 723/** load & save, init *******************************************************/
724
725ecb_inline void
726swap_sv (SV *a, SV *b)
727{
728 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
729 SV tmp;
730
731 /* swap sv_any */
732 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
733
734 /* swap sv_flags */
735 SvFLAGS (&tmp) = SvFLAGS (a);
736 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
737 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
738
739#if PERL_VERSION_ATLEAST (5,10,0)
740 /* perl 5.10 and later complicates this _quite_ a bit, but it also
741 * is much faster, so no quarrels here. alternatively, we could
742 * sv_upgrade to avoid this.
743 */
744 {
745 /* swap sv_u */
746 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
747
748 /* if SvANY points to the head, we need to adjust the pointers,
749 * as the pointer for a still points to b, and maybe vice versa.
750 */
751 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
752 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
753 svany_in_head_set |= 1 << SVt_NV;
754 #endif
755
756 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
757
758 if (svany_in_head (SvTYPE (a)))
759 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
760
761 if (svany_in_head (SvTYPE (b)))
762 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
763 }
764#endif
765}
766
767/* swap sv heads, at least logically */
768static void
769swap_svs_enter (pTHX_ Coro__State c)
770{
771 int i;
772
773 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
774 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
775}
776
777static void
778swap_svs_leave (pTHX_ Coro__State c)
779{
780 int i;
781
782 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
783 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
784}
785
786#define SWAP_SVS_ENTER(coro) \
787 if (ecb_expect_false ((coro)->swap_sv)) \
788 swap_svs_enter (aTHX_ (coro))
789
790#define SWAP_SVS_LEAVE(coro) \
791 if (ecb_expect_false ((coro)->swap_sv)) \
792 swap_svs_leave (aTHX_ (coro))
793
794static void
795on_enterleave_call (pTHX_ SV *cb);
475 796
476static void 797static void
477load_perl (pTHX_ Coro__State c) 798load_perl (pTHX_ Coro__State c)
478{ 799{
479 perl_slots *slot = c->slot; 800 perl_slots *slot = c->slot;
480 c->slot = 0; 801 c->slot = 0;
481 802
482 PL_mainstack = c->mainstack; 803 PL_mainstack = c->mainstack;
483 804
484 GvSV (PL_defgv) = slot->defsv; 805#if CORO_JIT
485 GvAV (PL_defgv) = slot->defav; 806 load_perl_slots (slot);
486 GvSV (PL_errgv) = slot->errsv; 807#else
487 GvSV (irsgv) = slot->irsgv;
488
489 #define VAR(name,type) PL_ ## name = slot->name; 808 #define VARx(name,expr,type) expr = slot->name;
490 # include "state.h" 809 #include "state.h"
491 #undef VAR 810#endif
492 811
493 { 812 {
494 dSP; 813 dSP;
495 814
496 CV *cv; 815 CV *cv;
497 816
498 /* now do the ugly restore mess */ 817 /* now do the ugly restore mess */
499 while (expect_true (cv = (CV *)POPs)) 818 while (ecb_expect_true (cv = (CV *)POPs))
500 { 819 {
501 put_padlist (aTHX_ cv); /* mark this padlist as available */ 820 put_padlist (aTHX_ cv); /* mark this padlist as available */
502 CvDEPTH (cv) = PTR2IV (POPs); 821 CvDEPTH (cv) = PTR2IV (POPs);
503 CvPADLIST (cv) = (AV *)POPs; 822 CvPADLIST (cv) = (PADLIST *)POPs;
504 } 823 }
505 824
506 PUTBACK; 825 PUTBACK;
507 } 826 }
508 827
509 slf_frame = c->slf_frame; 828 slf_frame = c->slf_frame;
510 coro_throw = c->throw; 829 CORO_THROW = c->except;
830
831 if (ecb_expect_false (enable_times))
832 {
833 if (ecb_expect_false (!times_valid))
834 coro_times_update ();
835
836 coro_times_sub (c);
837 }
838
839 if (ecb_expect_false (c->on_enter))
840 {
841 int i;
842
843 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
844 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
845 }
846
847 if (ecb_expect_false (c->on_enter_xs))
848 {
849 int i;
850
851 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
852 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
853 }
854
855 SWAP_SVS_ENTER (c);
511} 856}
512 857
513static void 858static void
514save_perl (pTHX_ Coro__State c) 859save_perl (pTHX_ Coro__State c)
515{ 860{
516 c->throw = coro_throw; 861 SWAP_SVS_LEAVE (c);
862
863 if (ecb_expect_false (c->on_leave_xs))
864 {
865 int i;
866
867 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
868 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
869 }
870
871 if (ecb_expect_false (c->on_leave))
872 {
873 int i;
874
875 for (i = AvFILLp (c->on_leave); i >= 0; --i)
876 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
877 }
878
879 times_valid = 0;
880
881 if (ecb_expect_false (enable_times))
882 {
883 coro_times_update (); times_valid = 1;
884 coro_times_add (c);
885 }
886
887 c->except = CORO_THROW;
517 c->slf_frame = slf_frame; 888 c->slf_frame = slf_frame;
518 889
519 { 890 {
520 dSP; 891 dSP;
521 I32 cxix = cxstack_ix; 892 I32 cxix = cxstack_ix;
… …
529 900
530 XPUSHs (Nullsv); 901 XPUSHs (Nullsv);
531 /* this loop was inspired by pp_caller */ 902 /* this loop was inspired by pp_caller */
532 for (;;) 903 for (;;)
533 { 904 {
534 while (expect_true (cxix >= 0)) 905 while (ecb_expect_true (cxix >= 0))
535 { 906 {
536 PERL_CONTEXT *cx = &ccstk[cxix--]; 907 PERL_CONTEXT *cx = &ccstk[cxix--];
537 908
538 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 909 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
539 { 910 {
540 CV *cv = cx->blk_sub.cv; 911 CV *cv = cx->blk_sub.cv;
541 912
542 if (expect_true (CvDEPTH (cv))) 913 if (ecb_expect_true (CvDEPTH (cv)))
543 { 914 {
544 EXTEND (SP, 3); 915 EXTEND (SP, 3);
545 PUSHs ((SV *)CvPADLIST (cv)); 916 PUSHs ((SV *)CvPADLIST (cv));
546 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 917 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
547 PUSHs ((SV *)cv); 918 PUSHs ((SV *)cv);
… …
550 get_padlist (aTHX_ cv); 921 get_padlist (aTHX_ cv);
551 } 922 }
552 } 923 }
553 } 924 }
554 925
555 if (expect_true (top_si->si_type == PERLSI_MAIN)) 926 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
556 break; 927 break;
557 928
558 top_si = top_si->si_prev; 929 top_si = top_si->si_prev;
559 ccstk = top_si->si_cxstack; 930 ccstk = top_si->si_cxstack;
560 cxix = top_si->si_cxix; 931 cxix = top_si->si_cxix;
… …
562 933
563 PUTBACK; 934 PUTBACK;
564 } 935 }
565 936
566 /* allocate some space on the context stack for our purposes */ 937 /* allocate some space on the context stack for our purposes */
567 /* we manually unroll here, as usually 2 slots is enough */ 938 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
568 if (SLOT_COUNT >= 1) CXINC;
569 if (SLOT_COUNT >= 2) CXINC;
570 if (SLOT_COUNT >= 3) CXINC;
571 { 939 {
572 int i; 940 unsigned int i;
941
573 for (i = 3; i < SLOT_COUNT; ++i) 942 for (i = 0; i < SLOT_COUNT; ++i)
574 CXINC; 943 CXINC;
575 } 944
576 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 945 cxstack_ix -= SLOT_COUNT; /* undo allocation */
946 }
577 947
578 c->mainstack = PL_mainstack; 948 c->mainstack = PL_mainstack;
579 949
580 { 950 {
581 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 951 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
582 952
583 slot->defav = GvAV (PL_defgv); 953#if CORO_JIT
584 slot->defsv = DEFSV; 954 save_perl_slots (slot);
585 slot->errsv = ERRSV; 955#else
586 slot->irsgv = GvSV (irsgv);
587
588 #define VAR(name,type) slot->name = PL_ ## name; 956 #define VARx(name,expr,type) slot->name = expr;
589 # include "state.h" 957 #include "state.h"
590 #undef VAR 958#endif
591 } 959 }
592} 960}
593 961
594/* 962/*
595 * allocate various perl stacks. This is almost an exact copy 963 * allocate various perl stacks. This is almost an exact copy
596 * of perl.c:init_stacks, except that it uses less memory 964 * of perl.c:init_stacks, except that it uses less memory
597 * on the (sometimes correct) assumption that coroutines do 965 * on the (sometimes correct) assumption that coroutines do
598 * not usually need a lot of stackspace. 966 * not usually need a lot of stackspace.
599 */ 967 */
600#if CORO_PREFER_PERL_FUNCTIONS 968#if CORO_PREFER_PERL_FUNCTIONS
601# define coro_init_stacks init_stacks 969# define coro_init_stacks(thx) init_stacks ()
602#else 970#else
603static void 971static void
604coro_init_stacks (pTHX) 972coro_init_stacks (pTHX)
605{ 973{
606 PL_curstackinfo = new_stackinfo(32, 8); 974 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
607 PL_curstackinfo->si_type = PERLSI_MAIN; 975 PL_curstackinfo->si_type = PERLSI_MAIN;
608 PL_curstack = PL_curstackinfo->si_stack; 976 PL_curstack = PL_curstackinfo->si_stack;
609 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 977 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
610 978
611 PL_stack_base = AvARRAY(PL_curstack); 979 PL_stack_base = AvARRAY(PL_curstack);
… …
626#endif 994#endif
627 995
628 New(54,PL_scopestack,8,I32); 996 New(54,PL_scopestack,8,I32);
629 PL_scopestack_ix = 0; 997 PL_scopestack_ix = 0;
630 PL_scopestack_max = 8; 998 PL_scopestack_max = 8;
999#if HAS_SCOPESTACK_NAME
1000 New(54,PL_scopestack_name,8,const char*);
1001#endif
631 1002
632 New(54,PL_savestack,24,ANY); 1003 New(54,PL_savestack,24,ANY);
633 PL_savestack_ix = 0; 1004 PL_savestack_ix = 0;
634 PL_savestack_max = 24; 1005 PL_savestack_max = 24;
1006#if PERL_VERSION_ATLEAST (5,24,0)
1007 /* perl 5.24 moves SS_MAXPUSH optimisation from */
1008 /* the header macros to PL_savestack_max */
1009 PL_savestack_max -= SS_MAXPUSH;
1010#endif
635 1011
636#if !PERL_VERSION_ATLEAST (5,10,0) 1012#if !PERL_VERSION_ATLEAST (5,10,0)
637 New(54,PL_retstack,4,OP*); 1013 New(54,PL_retstack,4,OP*);
638 PL_retstack_ix = 0; 1014 PL_retstack_ix = 0;
639 PL_retstack_max = 4; 1015 PL_retstack_max = 4;
… …
663 } 1039 }
664 1040
665 Safefree (PL_tmps_stack); 1041 Safefree (PL_tmps_stack);
666 Safefree (PL_markstack); 1042 Safefree (PL_markstack);
667 Safefree (PL_scopestack); 1043 Safefree (PL_scopestack);
1044#if HAS_SCOPESTACK_NAME
1045 Safefree (PL_scopestack_name);
1046#endif
668 Safefree (PL_savestack); 1047 Safefree (PL_savestack);
669#if !PERL_VERSION_ATLEAST (5,10,0) 1048#if !PERL_VERSION_ATLEAST (5,10,0)
670 Safefree (PL_retstack); 1049 Safefree (PL_retstack);
671#endif 1050#endif
672} 1051}
673 1052
1053#define CORO_RSS \
1054 rss += sizeof (SYM (curstackinfo)); \
1055 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
1056 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
1057 rss += SYM (tmps_max) * sizeof (SV *); \
1058 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
1059 rss += SYM (scopestack_max) * sizeof (I32); \
1060 rss += SYM (savestack_max) * sizeof (ANY);
1061
674static size_t 1062static size_t
675coro_rss (pTHX_ struct coro *coro) 1063coro_rss (pTHX_ struct coro *coro)
676{ 1064{
677 size_t rss = sizeof (*coro); 1065 size_t rss = sizeof (*coro);
678 1066
679 if (coro->mainstack) 1067 if (coro->mainstack)
680 { 1068 {
681 perl_slots tmp_slot;
682 perl_slots *slot;
683
684 if (coro->flags & CF_RUNNING) 1069 if (coro->flags & CF_RUNNING)
685 { 1070 {
686 slot = &tmp_slot; 1071 #define SYM(sym) PL_ ## sym
687 1072 CORO_RSS;
688 #define VAR(name,type) slot->name = PL_ ## name;
689 # include "state.h"
690 #undef VAR 1073 #undef SYM
691 } 1074 }
692 else 1075 else
693 slot = coro->slot;
694
695 if (slot)
696 { 1076 {
697 rss += sizeof (slot->curstackinfo); 1077 #define SYM(sym) coro->slot->sym
698 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1078 CORO_RSS;
699 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1079 #undef SYM
700 rss += slot->tmps_max * sizeof (SV *);
701 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
702 rss += slot->scopestack_max * sizeof (I32);
703 rss += slot->savestack_max * sizeof (ANY);
704
705#if !PERL_VERSION_ATLEAST (5,10,0)
706 rss += slot->retstack_max * sizeof (OP *);
707#endif
708 } 1080 }
709 } 1081 }
710 1082
711 return rss; 1083 return rss;
712} 1084}
713 1085
714/** coroutine stack handling ************************************************/ 1086/** provide custom get/set/clear methods for %SIG elements ******************/
715
716static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
717static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
718static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
719 1087
720/* apparently < 5.8.8 */ 1088/* apparently < 5.8.8 */
721#ifndef MgPV_nolen_const 1089#ifndef MgPV_nolen_const
722#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1090#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
723 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1091 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
724 (const char*)(mg)->mg_ptr) 1092 (const char*)(mg)->mg_ptr)
725#endif 1093#endif
726 1094
1095/* this will be a patched copy of PL_vtbl_sigelem */
1096static MGVTBL coro_sigelem_vtbl;
1097
1098static int ecb_cold
1099coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
1100{
1101 char *key = SvPV_nolen ((SV *)name);
1102
1103 /* do what mg_copy normally does */
1104 sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
1105 assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
1106
1107 /* patch sigelem vtbl, but only for __WARN__ and __DIE__ */
1108 if (*key == '_'
1109 && (strEQ (key, "__DIE__")
1110 || strEQ (key, "__WARN__")))
1111 mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
1112
1113 return 1;
1114}
1115
1116/* perl does not have a %SIG vtbl, we provide one so we can override */
1117/* the magic vtbl for the __DIE__ and __WARN__ members */
1118static const MGVTBL coro_sig_vtbl = {
1119 0, 0, 0, 0, 0,
1120 coro_sig_copy
1121};
1122
727/* 1123/*
728 * This overrides the default magic get method of %SIG elements. 1124 * This overrides the default magic get method of %SIG elements.
729 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1125 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
730 * and instead of tryign to save and restore the hash elements, we just provide 1126 * and instead of trying to save and restore the hash elements (extremely slow),
731 * readback here. 1127 * we just provide our own readback here.
732 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
733 * not expecting this to actually change the hook. This is a potential problem
734 * when a schedule happens then, but we ignore this.
735 */ 1128 */
736static int 1129static int ecb_cold
737coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1130coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
738{ 1131{
739 const char *s = MgPV_nolen_const (mg); 1132 const char *s = MgPV_nolen_const (mg);
1133 /* the key must be either __DIE__ or __WARN__ here */
1134 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
740 1135
741 if (*s == '_') 1136 SV *ssv;
742 {
743 SV **svp = 0;
744 1137
745 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
746 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
747
748 if (svp) 1138 if (!*svp)
749 { 1139 ssv = &PL_sv_undef;
750 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1140 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
751 return 0; 1141 ssv = sv_2mortal (newRV_inc (*svp));
752 } 1142 else
753 } 1143 ssv = *svp;
754 1144
755 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1145 sv_setsv (sv, ssv);
1146 return 0;
756} 1147}
757 1148
758static int 1149static int ecb_cold
759coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1150coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
760{ 1151{
761 const char *s = MgPV_nolen_const (mg); 1152 const char *s = MgPV_nolen_const (mg);
1153 /* the key must be either __DIE__ or __WARN__ here */
1154 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
762 1155
763 if (*s == '_')
764 {
765 SV **svp = 0;
766
767 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
768 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
769
770 if (svp)
771 {
772 SV *old = *svp; 1156 SV *old = *svp;
773 *svp = 0; 1157 *svp = 0;
774 SvREFCNT_dec (old); 1158 SvREFCNT_dec (old);
775 return 0; 1159 return 0;
776 }
777 }
778
779 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
780} 1160}
781 1161
782static int 1162static int ecb_cold
783coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1163coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
784{ 1164{
785 const char *s = MgPV_nolen_const (mg); 1165 const char *s = MgPV_nolen_const (mg);
1166 /* the key must be either __DIE__ or __WARN__ here */
1167 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
786 1168
787 if (*s == '_')
788 {
789 SV **svp = 0;
790
791 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
792 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
793
794 if (svp)
795 {
796 SV *old = *svp; 1169 SV *old = *svp;
797 *svp = newSVsv (sv); 1170 *svp = SvOK (sv) ? newSVsv (sv) : 0;
798 SvREFCNT_dec (old); 1171 SvREFCNT_dec (old);
799 return 0; 1172 return 0;
800 }
801 }
802
803 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
804} 1173}
805 1174
806static void 1175static void
807prepare_nop (pTHX_ struct coro_transfer_args *ta) 1176prepare_nop (pTHX_ struct coro_transfer_args *ta)
808{ 1177{
… …
814slf_check_nop (pTHX_ struct CoroSLF *frame) 1183slf_check_nop (pTHX_ struct CoroSLF *frame)
815{ 1184{
816 return 0; 1185 return 0;
817} 1186}
818 1187
819static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1188static int
1189slf_check_repeat (pTHX_ struct CoroSLF *frame)
1190{
1191 return 1;
1192}
1193
1194/** coroutine stack handling ************************************************/
1195
1196static UNOP init_perl_op;
1197
1198ecb_noinline static void /* noinline to keep it out of the transfer fast path */
820coro_setup (pTHX_ struct coro *coro) 1199init_perl (pTHX_ struct coro *coro)
821{ 1200{
822 /* 1201 /*
823 * emulate part of the perl startup here. 1202 * emulate part of the perl startup here.
824 */ 1203 */
825 coro_init_stacks (aTHX); 1204 coro_init_stacks (aTHX);
826 1205
827 PL_runops = RUNOPS_DEFAULT; 1206 PL_runops = RUNOPS_DEFAULT;
828 PL_curcop = &PL_compiling; 1207 PL_curcop = &PL_compiling;
829 PL_in_eval = EVAL_NULL; 1208 PL_in_eval = EVAL_NULL;
830 PL_comppad = 0; 1209 PL_comppad = 0;
1210 PL_comppad_name = 0;
1211 PL_comppad_name_fill = 0;
1212 PL_comppad_name_floor = 0;
831 PL_curpm = 0; 1213 PL_curpm = 0;
832 PL_curpad = 0; 1214 PL_curpad = 0;
833 PL_localizing = 0; 1215 PL_localizing = 0;
834 PL_dirty = 0;
835 PL_restartop = 0; 1216 PL_restartop = 0;
836#if PERL_VERSION_ATLEAST (5,10,0) 1217#if PERL_VERSION_ATLEAST (5,10,0)
837 PL_parser = 0; 1218 PL_parser = 0;
838#endif 1219#endif
1220 PL_hints = 0;
839 1221
840 /* recreate the die/warn hooks */ 1222 /* recreate the die/warn hooks */
841 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1223 PL_diehook = SvREFCNT_inc (rv_diehook);
842 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1224 PL_warnhook = SvREFCNT_inc (rv_warnhook);
843 1225
844 GvSV (PL_defgv) = newSV (0); 1226 GvSV (PL_defgv) = newSV (0);
845 GvAV (PL_defgv) = coro->args; coro->args = 0; 1227 GvAV (PL_defgv) = coro->args; coro->args = 0;
846 GvSV (PL_errgv) = newSV (0); 1228 GvSV (PL_errgv) = newSV (0);
847 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1229 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1230 GvHV (PL_hintgv) = newHV ();
1231#if PERL_VERSION_ATLEAST (5,10,0)
1232 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1233#endif
848 PL_rs = newSVsv (GvSV (irsgv)); 1234 PL_rs = newSVsv (GvSV (irsgv));
849 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1235 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
850 1236
851 { 1237 {
852 dSP; 1238 dSP;
853 UNOP myop; 1239 UNOP myop;
854 1240
855 Zero (&myop, 1, UNOP); 1241 Zero (&myop, 1, UNOP);
856 myop.op_next = Nullop; 1242 myop.op_next = Nullop;
1243 myop.op_type = OP_ENTERSUB;
857 myop.op_flags = OPf_WANT_VOID; 1244 myop.op_flags = OPf_WANT_VOID;
858 1245
859 PUSHMARK (SP); 1246 PUSHMARK (SP);
860 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1247 XPUSHs ((SV *)coro->startcv);
861 PUTBACK; 1248 PUTBACK;
862 PL_op = (OP *)&myop; 1249 PL_op = (OP *)&myop;
863 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1250 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
864 SPAGAIN;
865 } 1251 }
866 1252
867 /* this newly created coroutine might be run on an existing cctx which most 1253 /* this newly created coroutine might be run on an existing cctx which most
868 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1254 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
869 */ 1255 */
870 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1256 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
871 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1257 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1258 slf_frame.destroy = 0;
872 1259
873 coro_throw = coro->throw; 1260 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
874} 1261 init_perl_op.op_next = PL_op;
1262 init_perl_op.op_type = OP_ENTERSUB;
1263 init_perl_op.op_ppaddr = pp_slf;
1264 /* no flags etc. required, as an init function won't be called */
875 1265
1266 PL_op = (OP *)&init_perl_op;
1267
1268 /* copy throw, in case it was set before init_perl */
1269 CORO_THROW = coro->except;
1270
1271 SWAP_SVS_ENTER (coro);
1272
1273 if (ecb_expect_false (enable_times))
1274 {
1275 coro_times_update ();
1276 coro_times_sub (coro);
1277 }
1278}
1279
876static void 1280static void
877coro_destruct (pTHX_ struct coro *coro) 1281coro_unwind_stacks (pTHX)
878{ 1282{
879 if (!IN_DESTRUCT) 1283 if (!IN_DESTRUCT)
880 { 1284 {
881 /* restore all saved variables and stuff */ 1285 /* restore all saved variables and stuff */
882 LEAVE_SCOPE (0); 1286 LEAVE_SCOPE (0);
… …
890 POPSTACK_TO (PL_mainstack); 1294 POPSTACK_TO (PL_mainstack);
891 1295
892 /* unwind main stack */ 1296 /* unwind main stack */
893 dounwind (-1); 1297 dounwind (-1);
894 } 1298 }
1299}
895 1300
896 SvREFCNT_dec (GvSV (PL_defgv)); 1301static void
897 SvREFCNT_dec (GvAV (PL_defgv)); 1302destroy_perl (pTHX_ struct coro *coro)
898 SvREFCNT_dec (GvSV (PL_errgv)); 1303{
899 SvREFCNT_dec (PL_defoutgv); 1304 SV *svf [9];
900 SvREFCNT_dec (PL_rs);
901 SvREFCNT_dec (GvSV (irsgv));
902 1305
903 SvREFCNT_dec (PL_diehook);
904 SvREFCNT_dec (PL_warnhook);
905 1306 {
1307 SV *old_current = SvRV (coro_current);
1308 struct coro *current = SvSTATE (old_current);
1309
1310 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1311
1312 save_perl (aTHX_ current);
1313
1314 /* this will cause transfer_check to croak on block*/
1315 SvRV_set (coro_current, (SV *)coro->hv);
1316
1317 load_perl (aTHX_ coro);
1318
1319 /* restore swapped sv's */
1320 SWAP_SVS_LEAVE (coro);
1321
1322 coro_unwind_stacks (aTHX);
1323
1324 coro_destruct_stacks (aTHX);
1325
1326 /* now save some sv's to be free'd later */
1327 svf [0] = GvSV (PL_defgv);
1328 svf [1] = (SV *)GvAV (PL_defgv);
1329 svf [2] = GvSV (PL_errgv);
1330 svf [3] = (SV *)PL_defoutgv;
1331 svf [4] = PL_rs;
1332 svf [5] = GvSV (irsgv);
1333 svf [6] = (SV *)GvHV (PL_hintgv);
1334 svf [7] = PL_diehook;
1335 svf [8] = PL_warnhook;
1336 assert (9 == sizeof (svf) / sizeof (*svf));
1337
1338 SvRV_set (coro_current, old_current);
1339
1340 load_perl (aTHX_ current);
1341 }
1342
1343 {
1344 unsigned int i;
1345
1346 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1347 SvREFCNT_dec (svf [i]);
1348
906 SvREFCNT_dec (coro->saved_deffh); 1349 SvREFCNT_dec (coro->saved_deffh);
907 SvREFCNT_dec (coro_throw); 1350 SvREFCNT_dec (coro->rouse_cb);
908 1351 SvREFCNT_dec (coro->invoke_cb);
909 coro_destruct_stacks (aTHX); 1352 SvREFCNT_dec (coro->invoke_av);
1353 SvREFCNT_dec (coro->on_enter_xs);
1354 SvREFCNT_dec (coro->on_leave_xs);
1355 }
910} 1356}
911 1357
912INLINE void 1358ecb_inline void
913free_coro_mortal (pTHX) 1359free_coro_mortal (pTHX)
914{ 1360{
915 if (expect_true (coro_mortal)) 1361 if (ecb_expect_true (coro_mortal))
916 { 1362 {
917 SvREFCNT_dec (coro_mortal); 1363 SvREFCNT_dec ((SV *)coro_mortal);
918 coro_mortal = 0; 1364 coro_mortal = 0;
919 } 1365 }
920} 1366}
921 1367
922static int 1368static int
923runops_trace (pTHX) 1369runops_trace (pTHX)
924{ 1370{
925 COP *oldcop = 0; 1371 COP *oldcop = 0;
926 int oldcxix = -2; 1372 int oldcxix = -2;
927 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
928 coro_cctx *cctx = coro->cctx;
929 1373
930 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1374 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
931 { 1375 {
932 PERL_ASYNC_CHECK (); 1376 PERL_ASYNC_CHECK ();
933 1377
934 if (cctx->flags & CC_TRACE_ALL) 1378 if (cctx_current->flags & CC_TRACE_ALL)
935 { 1379 {
936 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1380 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
937 { 1381 {
938 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1382 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
939 SV **bot, **top; 1383 SV **bot, **top;
940 AV *av = newAV (); /* return values */ 1384 AV *av = newAV (); /* return values */
941 SV **cb; 1385 SV **cb;
… …
956 av_push (av, SvREFCNT_inc_NN (*bot++)); 1400 av_push (av, SvREFCNT_inc_NN (*bot++));
957 1401
958 PL_runops = RUNOPS_DEFAULT; 1402 PL_runops = RUNOPS_DEFAULT;
959 ENTER; 1403 ENTER;
960 SAVETMPS; 1404 SAVETMPS;
1405 PUSHMARK (SP);
961 EXTEND (SP, 3); 1406 EXTEND (SP, 3);
962 PUSHMARK (SP);
963 PUSHs (&PL_sv_no); 1407 PUSHs (&PL_sv_no);
964 PUSHs (fullname); 1408 PUSHs (fullname);
965 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 1409 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
966 PUTBACK; 1410 PUTBACK;
967 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1411 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
… …
978 1422
979 if (PL_curcop != &PL_compiling) 1423 if (PL_curcop != &PL_compiling)
980 { 1424 {
981 SV **cb; 1425 SV **cb;
982 1426
983 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1427 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
984 { 1428 {
985 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1429 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
986 1430
987 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1431 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
988 { 1432 {
989 runops_proc_t old_runops = PL_runops;
990 dSP; 1433 dSP;
991 GV *gv = CvGV (cx->blk_sub.cv); 1434 GV *gv = CvGV (cx->blk_sub.cv);
992 SV *fullname = sv_2mortal (newSV (0)); 1435 SV *fullname = sv_2mortal (newSV (0));
993 1436
994 if (isGV (gv)) 1437 if (isGV (gv))
995 gv_efullname3 (fullname, gv, 0); 1438 gv_efullname3 (fullname, gv, 0);
996 1439
997 PL_runops = RUNOPS_DEFAULT; 1440 PL_runops = RUNOPS_DEFAULT;
998 ENTER; 1441 ENTER;
999 SAVETMPS; 1442 SAVETMPS;
1443 PUSHMARK (SP);
1000 EXTEND (SP, 3); 1444 EXTEND (SP, 3);
1001 PUSHMARK (SP);
1002 PUSHs (&PL_sv_yes); 1445 PUSHs (&PL_sv_yes);
1003 PUSHs (fullname); 1446 PUSHs (fullname);
1004 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1447 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc (SUB_ARGARRAY)) : &PL_sv_undef);
1005 PUTBACK; 1448 PUTBACK;
1006 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1449 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1007 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1450 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1008 SPAGAIN; 1451 SPAGAIN;
1009 FREETMPS; 1452 FREETMPS;
… …
1012 } 1455 }
1013 1456
1014 oldcxix = cxstack_ix; 1457 oldcxix = cxstack_ix;
1015 } 1458 }
1016 1459
1017 if (cctx->flags & CC_TRACE_LINE) 1460 if (cctx_current->flags & CC_TRACE_LINE)
1018 { 1461 {
1019 dSP; 1462 dSP;
1020 1463
1021 PL_runops = RUNOPS_DEFAULT; 1464 PL_runops = RUNOPS_DEFAULT;
1022 ENTER; 1465 ENTER;
1023 SAVETMPS; 1466 SAVETMPS;
1024 EXTEND (SP, 3);
1025 PL_runops = RUNOPS_DEFAULT;
1026 PUSHMARK (SP); 1467 PUSHMARK (SP);
1468 EXTEND (SP, 2);
1027 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1469 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1028 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1470 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1029 PUTBACK; 1471 PUTBACK;
1030 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); 1472 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1031 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1473 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
… …
1041 1483
1042 TAINT_NOT; 1484 TAINT_NOT;
1043 return 0; 1485 return 0;
1044} 1486}
1045 1487
1488static struct CoroSLF cctx_ssl_frame;
1489
1046static void 1490static void
1047prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1491slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1048{ 1492{
1049 ta->prev = (struct coro *)cctx;
1050 ta->next = 0; 1493 ta->prev = 0;
1051} 1494}
1052 1495
1053/* inject a fake call to Coro::State::_cctx_init into the execution */ 1496static int
1054/* _cctx_init should be careful, as it could be called at almost any time */ 1497slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1055/* during execution of a perl program */
1056/* also initialises PL_top_env */
1057static void NOINLINE
1058cctx_prepare (pTHX_ coro_cctx *cctx)
1059{ 1498{
1060 dSP; 1499 *frame = cctx_ssl_frame;
1061 UNOP myop;
1062 1500
1501 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1502}
1503
1504/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1505static void ecb_noinline
1506cctx_prepare (pTHX)
1507{
1063 PL_top_env = &PL_start_env; 1508 PL_top_env = &PL_start_env;
1064 1509
1065 if (cctx->flags & CC_TRACE) 1510 if (cctx_current->flags & CC_TRACE)
1066 PL_runops = runops_trace; 1511 PL_runops = runops_trace;
1067 1512
1068 Zero (&myop, 1, UNOP); 1513 /* we already must be executing an SLF op, there is no other valid way
1069 myop.op_next = PL_op; 1514 * that can lead to creation of a new cctx */
1070 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1515 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1516 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1071 1517
1072 PUSHMARK (SP); 1518 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1073 EXTEND (SP, 2); 1519 cctx_ssl_frame = slf_frame;
1074 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1520
1075 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1521 slf_frame.prepare = slf_prepare_set_stacklevel;
1076 PUTBACK; 1522 slf_frame.check = slf_check_set_stacklevel;
1077 PL_op = (OP *)&myop;
1078 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1079 SPAGAIN;
1080} 1523}
1081 1524
1082/* the tail of transfer: execute stuff we can only do after a transfer */ 1525/* the tail of transfer: execute stuff we can only do after a transfer */
1083INLINE void 1526ecb_inline void
1084transfer_tail (pTHX) 1527transfer_tail (pTHX)
1085{ 1528{
1086 free_coro_mortal (aTHX); 1529 free_coro_mortal (aTHX);
1530}
1531
1532/* try to exit the same way perl's main function would do */
1533/* we do not bother resetting the environment or other things *7
1534/* that are not, uhm, essential */
1535/* this obviously also doesn't work when perl is embedded */
1536static void ecb_noinline ecb_cold
1537perlish_exit (pTHX)
1538{
1539 int exitstatus = perl_destruct (PL_curinterp);
1540 perl_free (PL_curinterp);
1541 exit (exitstatus);
1087} 1542}
1088 1543
1089/* 1544/*
1090 * this is a _very_ stripped down perl interpreter ;) 1545 * this is a _very_ stripped down perl interpreter ;)
1091 */ 1546 */
… …
1103 /* normally we would need to skip the entersub here */ 1558 /* normally we would need to skip the entersub here */
1104 /* not doing so will re-execute it, which is exactly what we want */ 1559 /* not doing so will re-execute it, which is exactly what we want */
1105 /* PL_nop = PL_nop->op_next */ 1560 /* PL_nop = PL_nop->op_next */
1106 1561
1107 /* inject a fake subroutine call to cctx_init */ 1562 /* inject a fake subroutine call to cctx_init */
1108 cctx_prepare (aTHX_ (coro_cctx *)arg); 1563 cctx_prepare (aTHX);
1109 1564
1110 /* cctx_run is the alternative tail of transfer() */ 1565 /* cctx_run is the alternative tail of transfer() */
1111 transfer_tail (aTHX); 1566 transfer_tail (aTHX);
1112 1567
1113 /* somebody or something will hit me for both perl_run and PL_restartop */ 1568 /* somebody or something will hit me for both perl_run and PL_restartop */
1114 PL_restartop = PL_op; 1569 PL_restartop = PL_op;
1115 perl_run (PL_curinterp); 1570 perl_run (PL_curinterp);
1571 /*
1572 * Unfortunately, there is no way to get at the return values of the
1573 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1574 * runtime errors here, as this is just a random interpreter, not a thread.
1575 */
1576
1577 /*
1578 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1579 * requires PL_scopestack_ix, so do it here if required.
1580 */
1581 if (!PL_scopestack_ix)
1582 ENTER;
1116 1583
1117 /* 1584 /*
1118 * If perl-run returns we assume exit() was being called or the coro 1585 * If perl-run returns we assume exit() was being called or the coro
1119 * fell off the end, which seems to be the only valid (non-bug) 1586 * fell off the end, which seems to be the only valid (non-bug)
1120 * reason for perl_run to return. We try to exit by jumping to the 1587 * reason for perl_run to return. We try to mimic whatever perl is normally
1121 * bootstrap-time "top" top_env, as we cannot restore the "main" 1588 * doing in that case. YMMV.
1122 * coroutine as Coro has no such concept
1123 */ 1589 */
1124 PL_top_env = main_top_env; 1590 perlish_exit (aTHX);
1125 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1126 } 1591 }
1127} 1592}
1128 1593
1129static coro_cctx * 1594static coro_cctx *
1130cctx_new () 1595cctx_new (void)
1131{ 1596{
1132 coro_cctx *cctx; 1597 coro_cctx *cctx;
1133 1598
1134 ++cctx_count; 1599 ++cctx_count;
1135 New (0, cctx, 1, coro_cctx); 1600 New (0, cctx, 1, coro_cctx);
… …
1141 return cctx; 1606 return cctx;
1142} 1607}
1143 1608
1144/* create a new cctx only suitable as source */ 1609/* create a new cctx only suitable as source */
1145static coro_cctx * 1610static coro_cctx *
1146cctx_new_empty () 1611cctx_new_empty (void)
1147{ 1612{
1148 coro_cctx *cctx = cctx_new (); 1613 coro_cctx *cctx = cctx_new ();
1149 1614
1150 cctx->sptr = 0; 1615 cctx->stack.sptr = 0;
1151 coro_create (&cctx->cctx, 0, 0, 0, 0); 1616 coro_create (&cctx->cctx, 0, 0, 0, 0);
1152 1617
1153 return cctx; 1618 return cctx;
1154} 1619}
1155 1620
1156/* create a new cctx suitable as destination/running a perl interpreter */ 1621/* create a new cctx suitable as destination/running a perl interpreter */
1157static coro_cctx * 1622static coro_cctx *
1158cctx_new_run () 1623cctx_new_run (void)
1159{ 1624{
1160 coro_cctx *cctx = cctx_new (); 1625 coro_cctx *cctx = cctx_new ();
1161 void *stack_start;
1162 size_t stack_size;
1163 1626
1164#if HAVE_MMAP 1627 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1165 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1166 /* mmap supposedly does allocate-on-write for us */
1167 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1168
1169 if (cctx->sptr != (void *)-1)
1170 {
1171 #if CORO_STACKGUARD
1172 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1173 #endif
1174 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1175 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1176 cctx->flags |= CC_MAPPED;
1177 } 1628 {
1178 else
1179#endif
1180 {
1181 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1182 New (0, cctx->sptr, cctx_stacksize, long);
1183
1184 if (!cctx->sptr)
1185 {
1186 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1629 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1187 _exit (EXIT_FAILURE); 1630 _exit (EXIT_FAILURE);
1188 }
1189
1190 stack_start = cctx->sptr;
1191 stack_size = cctx->ssize;
1192 } 1631 }
1193 1632
1194 #if CORO_USE_VALGRIND
1195 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1196 #endif
1197
1198 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1633 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1199 1634
1200 return cctx; 1635 return cctx;
1201} 1636}
1202 1637
1203static void 1638static void
1204cctx_destroy (coro_cctx *cctx) 1639cctx_destroy (coro_cctx *cctx)
1205{ 1640{
1206 if (!cctx) 1641 if (!cctx)
1207 return; 1642 return;
1208 1643
1644 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1645
1209 --cctx_count; 1646 --cctx_count;
1210 coro_destroy (&cctx->cctx); 1647 coro_destroy (&cctx->cctx);
1211 1648
1212 /* coro_transfer creates new, empty cctx's */ 1649 coro_stack_free (&cctx->stack);
1213 if (cctx->sptr)
1214 {
1215 #if CORO_USE_VALGRIND
1216 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1217 #endif
1218
1219#if HAVE_MMAP
1220 if (cctx->flags & CC_MAPPED)
1221 munmap (cctx->sptr, cctx->ssize);
1222 else
1223#endif
1224 Safefree (cctx->sptr);
1225 }
1226 1650
1227 Safefree (cctx); 1651 Safefree (cctx);
1228} 1652}
1229 1653
1230/* wether this cctx should be destructed */ 1654/* wether this cctx should be destructed */
1231#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1655#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1232 1656
1233static coro_cctx * 1657static coro_cctx *
1234cctx_get (pTHX) 1658cctx_get (pTHX)
1235{ 1659{
1236 while (expect_true (cctx_first)) 1660 while (ecb_expect_true (cctx_first))
1237 { 1661 {
1238 coro_cctx *cctx = cctx_first; 1662 coro_cctx *cctx = cctx_first;
1239 cctx_first = cctx->next; 1663 cctx_first = cctx->next;
1240 --cctx_idle; 1664 --cctx_idle;
1241 1665
1242 if (expect_true (!CCTX_EXPIRED (cctx))) 1666 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1243 return cctx; 1667 return cctx;
1244 1668
1245 cctx_destroy (cctx); 1669 cctx_destroy (cctx);
1246 } 1670 }
1247 1671
… …
1249} 1673}
1250 1674
1251static void 1675static void
1252cctx_put (coro_cctx *cctx) 1676cctx_put (coro_cctx *cctx)
1253{ 1677{
1254 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1678 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1255 1679
1256 /* free another cctx if overlimit */ 1680 /* free another cctx if overlimit */
1257 if (expect_false (cctx_idle >= cctx_max_idle)) 1681 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1258 { 1682 {
1259 coro_cctx *first = cctx_first; 1683 coro_cctx *first = cctx_first;
1260 cctx_first = first->next; 1684 cctx_first = first->next;
1261 --cctx_idle; 1685 --cctx_idle;
1262 1686
… …
1273static void 1697static void
1274transfer_check (pTHX_ struct coro *prev, struct coro *next) 1698transfer_check (pTHX_ struct coro *prev, struct coro *next)
1275{ 1699{
1276 /* TODO: throwing up here is considered harmful */ 1700 /* TODO: throwing up here is considered harmful */
1277 1701
1278 if (expect_true (prev != next)) 1702 if (ecb_expect_true (prev != next))
1279 { 1703 {
1280 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1704 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1281 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1705 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1282 1706
1283 if (expect_false (next->flags & CF_RUNNING)) 1707 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1284 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1285
1286 if (expect_false (next->flags & CF_DESTROYED))
1287 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1708 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1288 1709
1289#if !PERL_VERSION_ATLEAST (5,10,0) 1710#if !PERL_VERSION_ATLEAST (5,10,0)
1290 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1711 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1291 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1712 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1292#endif 1713#endif
1293 } 1714 }
1294} 1715}
1295 1716
1296/* always use the TRANSFER macro */ 1717/* always use the TRANSFER macro */
1297static void NOINLINE /* noinline so we have a fixed stackframe */ 1718static void ecb_noinline /* noinline so we have a fixed stackframe */
1298transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1719transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1299{ 1720{
1300 dSTACKLEVEL; 1721 dSTACKLEVEL;
1301 1722
1302 /* sometimes transfer is only called to set idle_sp */ 1723 /* sometimes transfer is only called to set idle_sp */
1303 if (expect_false (!next)) 1724 if (ecb_expect_false (!prev))
1304 { 1725 {
1305 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1726 cctx_current->idle_sp = STACKLEVEL;
1306 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1727 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1307 } 1728 }
1308 else if (expect_true (prev != next)) 1729 else if (ecb_expect_true (prev != next))
1309 { 1730 {
1310 coro_cctx *prev__cctx; 1731 coro_cctx *cctx_prev;
1311 1732
1312 if (expect_false (prev->flags & CF_NEW)) 1733 if (ecb_expect_false (prev->flags & CF_NEW))
1313 { 1734 {
1314 /* create a new empty/source context */ 1735 /* create a new empty/source context */
1315 prev->cctx = cctx_new_empty ();
1316 prev->flags &= ~CF_NEW; 1736 prev->flags &= ~CF_NEW;
1317 prev->flags |= CF_RUNNING; 1737 prev->flags |= CF_RUNNING;
1318 } 1738 }
1319 1739
1320 prev->flags &= ~CF_RUNNING; 1740 prev->flags &= ~CF_RUNNING;
1321 next->flags |= CF_RUNNING; 1741 next->flags |= CF_RUNNING;
1322 1742
1323 /* first get rid of the old state */ 1743 /* first get rid of the old state */
1324 save_perl (aTHX_ prev); 1744 save_perl (aTHX_ prev);
1325 1745
1326 if (expect_false (next->flags & CF_NEW)) 1746 if (ecb_expect_false (next->flags & CF_NEW))
1327 { 1747 {
1328 /* need to start coroutine */ 1748 /* need to start coroutine */
1329 next->flags &= ~CF_NEW; 1749 next->flags &= ~CF_NEW;
1330 /* setup coroutine call */ 1750 /* setup coroutine call */
1331 coro_setup (aTHX_ next); 1751 init_perl (aTHX_ next);
1332 } 1752 }
1333 else 1753 else
1334 load_perl (aTHX_ next); 1754 load_perl (aTHX_ next);
1335 1755
1336 prev__cctx = prev->cctx;
1337
1338 /* possibly untie and reuse the cctx */ 1756 /* possibly untie and reuse the cctx */
1339 if (expect_true ( 1757 if (ecb_expect_true (
1340 prev__cctx->idle_sp == (void *)stacklevel 1758 cctx_current->idle_sp == STACKLEVEL
1341 && !(prev__cctx->flags & CC_TRACE) 1759 && !(cctx_current->flags & CC_TRACE)
1342 && !force_cctx 1760 && !force_cctx
1343 )) 1761 ))
1344 { 1762 {
1345 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1763 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1346 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1764 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1347 1765
1348 prev->cctx = 0;
1349
1350 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1766 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1351 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1767 /* without this the next cctx_get might destroy the running cctx while still in use */
1352 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1768 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1353 if (!next->cctx) 1769 if (ecb_expect_true (!next->cctx))
1354 next->cctx = cctx_get (aTHX); 1770 next->cctx = cctx_get (aTHX);
1355 1771
1356 cctx_put (prev__cctx); 1772 cctx_put (cctx_current);
1357 } 1773 }
1774 else
1775 prev->cctx = cctx_current;
1358 1776
1359 ++next->usecount; 1777 ++next->usecount;
1360 1778
1361 if (expect_true (!next->cctx)) 1779 cctx_prev = cctx_current;
1362 next->cctx = cctx_get (aTHX); 1780 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1363 1781
1364 if (expect_false (prev__cctx != next->cctx)) 1782 next->cctx = 0;
1783
1784 if (ecb_expect_false (cctx_prev != cctx_current))
1365 { 1785 {
1366 prev__cctx->top_env = PL_top_env; 1786 cctx_prev->top_env = PL_top_env;
1367 PL_top_env = next->cctx->top_env; 1787 PL_top_env = cctx_current->top_env;
1368 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1788 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1369 } 1789 }
1370 1790
1371 transfer_tail (aTHX); 1791 transfer_tail (aTHX);
1372 } 1792 }
1373} 1793}
… …
1375#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1795#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1376#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1796#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1377 1797
1378/** high level stuff ********************************************************/ 1798/** high level stuff ********************************************************/
1379 1799
1800/* this function is actually Coro, not Coro::State, but we call it from here */
1801/* because it is convenient - but it hasn't been declared yet for that reason */
1380static int 1802static void
1803coro_call_on_destroy (pTHX_ struct coro *coro);
1804
1805static void
1381coro_state_destroy (pTHX_ struct coro *coro) 1806coro_state_destroy (pTHX_ struct coro *coro)
1382{ 1807{
1383 if (coro->flags & CF_DESTROYED) 1808 if (coro->flags & CF_ZOMBIE)
1384 return 0; 1809 return;
1385 1810
1386 if (coro->on_destroy)
1387 coro->on_destroy (aTHX_ coro); 1811 slf_destroy (aTHX_ coro);
1388 1812
1389 coro->flags |= CF_DESTROYED; 1813 coro->flags |= CF_ZOMBIE;
1390 1814
1391 if (coro->flags & CF_READY) 1815 if (coro->flags & CF_READY)
1392 { 1816 {
1393 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1817 /* reduce nready, as destroying a ready coro effectively unreadies it */
1394 /* alternative: look through all ready queues and remove the coro */ 1818 /* alternative: look through all ready queues and remove the coro */
1395 --coro_nready; 1819 --coro_nready;
1396 } 1820 }
1397 else 1821 else
1398 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1822 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1399 1823
1400 if (coro->mainstack && coro->mainstack != main_mainstack)
1401 {
1402 struct coro temp;
1403
1404 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1405
1406 save_perl (aTHX_ &temp);
1407 load_perl (aTHX_ coro);
1408
1409 coro_destruct (aTHX_ coro);
1410
1411 load_perl (aTHX_ &temp);
1412
1413 coro->slot = 0;
1414 }
1415
1416 cctx_destroy (coro->cctx);
1417 SvREFCNT_dec (coro->args);
1418
1419 if (coro->next) coro->next->prev = coro->prev; 1824 if (coro->next) coro->next->prev = coro->prev;
1420 if (coro->prev) coro->prev->next = coro->next; 1825 if (coro->prev) coro->prev->next = coro->next;
1421 if (coro == coro_first) coro_first = coro->next; 1826 if (coro == coro_first) coro_first = coro->next;
1422 1827
1423 return 1; 1828 if (coro->mainstack
1829 && coro->mainstack != main_mainstack
1830 && coro->slot
1831 && !PL_dirty)
1832 destroy_perl (aTHX_ coro);
1833
1834 cctx_destroy (coro->cctx);
1835 SvREFCNT_dec (coro->startcv);
1836 SvREFCNT_dec (coro->args);
1837 SvREFCNT_dec (coro->swap_sv);
1838 SvREFCNT_dec (CORO_THROW);
1839
1840 coro_call_on_destroy (aTHX_ coro);
1841
1842 /* more destruction mayhem in coro_state_free */
1424} 1843}
1425 1844
1426static int 1845static int
1427coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1846coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1428{ 1847{
1429 struct coro *coro = (struct coro *)mg->mg_ptr; 1848 struct coro *coro = (struct coro *)mg->mg_ptr;
1430 mg->mg_ptr = 0; 1849 mg->mg_ptr = 0;
1431 1850
1432 coro->hv = 0;
1433
1434 if (--coro->refcnt < 0)
1435 {
1436 coro_state_destroy (aTHX_ coro); 1851 coro_state_destroy (aTHX_ coro);
1852 SvREFCNT_dec (coro->on_destroy);
1853 SvREFCNT_dec (coro->status);
1854
1437 Safefree (coro); 1855 Safefree (coro);
1438 }
1439 1856
1440 return 0; 1857 return 0;
1441} 1858}
1442 1859
1443static int 1860static int ecb_cold
1444coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1861coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1445{ 1862{
1446 struct coro *coro = (struct coro *)mg->mg_ptr; 1863 /* called when perl clones the current process the slow way (windows process emulation) */
1447 1864 /* we simply nuke the pointers in the copy, causing perl to croak */
1448 ++coro->refcnt; 1865 mg->mg_ptr = 0;
1866 mg->mg_virtual = 0;
1449 1867
1450 return 0; 1868 return 0;
1451} 1869}
1452 1870
1453static MGVTBL coro_state_vtbl = { 1871static MGVTBL coro_state_vtbl = {
… …
1478 TRANSFER (ta, 1); 1896 TRANSFER (ta, 1);
1479} 1897}
1480 1898
1481/** Coro ********************************************************************/ 1899/** Coro ********************************************************************/
1482 1900
1483INLINE void 1901ecb_inline void
1484coro_enq (pTHX_ struct coro *coro) 1902coro_enq (pTHX_ struct coro *coro)
1485{ 1903{
1486 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1904 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1487}
1488 1905
1489INLINE SV * 1906 SvREFCNT_inc_NN (coro->hv);
1907
1908 coro->next_ready = 0;
1909 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1910 ready [1] = coro;
1911}
1912
1913ecb_inline struct coro *
1490coro_deq (pTHX) 1914coro_deq (pTHX)
1491{ 1915{
1492 int prio; 1916 int prio;
1493 1917
1494 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1918 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1495 if (AvFILLp (coro_ready [prio]) >= 0) 1919 {
1496 return av_shift (coro_ready [prio]); 1920 struct coro **ready = coro_ready [prio];
1921
1922 if (ready [0])
1923 {
1924 struct coro *coro = ready [0];
1925 ready [0] = coro->next_ready;
1926 return coro;
1927 }
1928 }
1497 1929
1498 return 0; 1930 return 0;
1931}
1932
1933static void
1934invoke_sv_ready_hook_helper (void)
1935{
1936 dTHX;
1937 dSP;
1938
1939 ENTER;
1940 SAVETMPS;
1941
1942 PUSHMARK (SP);
1943 PUTBACK;
1944 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1945
1946 FREETMPS;
1947 LEAVE;
1499} 1948}
1500 1949
1501static int 1950static int
1502api_ready (pTHX_ SV *coro_sv) 1951api_ready (pTHX_ SV *coro_sv)
1503{ 1952{
1504 struct coro *coro;
1505 SV *sv_hook;
1506 void (*xs_hook)(void);
1507
1508 if (SvROK (coro_sv))
1509 coro_sv = SvRV (coro_sv);
1510
1511 coro = SvSTATE (coro_sv); 1953 struct coro *coro = SvSTATE (coro_sv);
1512 1954
1513 if (coro->flags & CF_READY) 1955 if (coro->flags & CF_READY)
1514 return 0; 1956 return 0;
1515 1957
1516 coro->flags |= CF_READY; 1958 coro->flags |= CF_READY;
1517 1959
1518 sv_hook = coro_nready ? 0 : coro_readyhook;
1519 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1520
1521 coro_enq (aTHX_ coro); 1960 coro_enq (aTHX_ coro);
1522 ++coro_nready;
1523 1961
1524 if (sv_hook) 1962 if (!coro_nready++)
1525 { 1963 if (coroapi.readyhook)
1526 dSP; 1964 coroapi.readyhook ();
1527
1528 ENTER;
1529 SAVETMPS;
1530
1531 PUSHMARK (SP);
1532 PUTBACK;
1533 call_sv (sv_hook, G_DISCARD);
1534 SPAGAIN;
1535
1536 FREETMPS;
1537 LEAVE;
1538 }
1539
1540 if (xs_hook)
1541 xs_hook ();
1542 1965
1543 return 1; 1966 return 1;
1544} 1967}
1545 1968
1546static int 1969static int
1547api_is_ready (pTHX_ SV *coro_sv) 1970api_is_ready (pTHX_ SV *coro_sv)
1548{ 1971{
1549 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1972 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1550} 1973}
1551 1974
1552INLINE void 1975/* expects to own a reference to next->hv */
1976ecb_inline void
1553prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1977prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1554{ 1978{
1555 SV *prev_sv, *next_sv;
1556
1557 for (;;)
1558 {
1559 next_sv = coro_deq (aTHX);
1560
1561 /* nothing to schedule: call the idle handler */
1562 if (expect_false (!next_sv))
1563 {
1564 dSP;
1565
1566 ENTER;
1567 SAVETMPS;
1568
1569 PUSHMARK (SP);
1570 PUTBACK;
1571 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1572 SPAGAIN;
1573
1574 FREETMPS;
1575 LEAVE;
1576 continue;
1577 }
1578
1579 ta->next = SvSTATE_hv (next_sv);
1580
1581 /* cannot transfer to destroyed coros, skip and look for next */
1582 if (expect_false (ta->next->flags & CF_DESTROYED))
1583 {
1584 SvREFCNT_dec (next_sv);
1585 /* coro_nready has already been taken care of by destroy */
1586 continue;
1587 }
1588
1589 --coro_nready;
1590 break;
1591 }
1592
1593 /* free this only after the transfer */
1594 prev_sv = SvRV (coro_current); 1979 SV *prev_sv = SvRV (coro_current);
1980
1595 ta->prev = SvSTATE_hv (prev_sv); 1981 ta->prev = SvSTATE_hv (prev_sv);
1982 ta->next = next;
1983
1596 TRANSFER_CHECK (*ta); 1984 TRANSFER_CHECK (*ta);
1597 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1985
1598 ta->next->flags &= ~CF_READY;
1599 SvRV_set (coro_current, next_sv); 1986 SvRV_set (coro_current, (SV *)next->hv);
1600 1987
1601 free_coro_mortal (aTHX); 1988 free_coro_mortal (aTHX);
1602 coro_mortal = prev_sv; 1989 coro_mortal = prev_sv;
1603} 1990}
1604 1991
1605INLINE void 1992static void
1993prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1994{
1995 for (;;)
1996 {
1997 struct coro *next = coro_deq (aTHX);
1998
1999 if (ecb_expect_true (next))
2000 {
2001 /* cannot transfer to destroyed coros, skip and look for next */
2002 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
2003 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
2004 else
2005 {
2006 next->flags &= ~CF_READY;
2007 --coro_nready;
2008
2009 prepare_schedule_to (aTHX_ ta, next);
2010 break;
2011 }
2012 }
2013 else
2014 {
2015 /* nothing to schedule: call the idle handler */
2016 if (SvROK (sv_idle)
2017 && SvOBJECT (SvRV (sv_idle)))
2018 {
2019 if (SvRV (sv_idle) == SvRV (coro_current))
2020 {
2021 require_pv ("Carp");
2022
2023 {
2024 dSP;
2025
2026 ENTER;
2027 SAVETMPS;
2028
2029 PUSHMARK (SP);
2030 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2031 PUTBACK;
2032 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2033
2034 FREETMPS;
2035 LEAVE;
2036 }
2037 }
2038
2039 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
2040 api_ready (aTHX_ SvRV (sv_idle));
2041 --coro_nready;
2042 }
2043 else
2044 {
2045 /* TODO: deprecated, remove, cannot work reliably *//*D*/
2046 dSP;
2047
2048 ENTER;
2049 SAVETMPS;
2050
2051 PUSHMARK (SP);
2052 PUTBACK;
2053 call_sv (sv_idle, G_VOID | G_DISCARD);
2054
2055 FREETMPS;
2056 LEAVE;
2057 }
2058 }
2059 }
2060}
2061
2062ecb_inline void
1606prepare_cede (pTHX_ struct coro_transfer_args *ta) 2063prepare_cede (pTHX_ struct coro_transfer_args *ta)
1607{ 2064{
1608 api_ready (aTHX_ coro_current); 2065 api_ready (aTHX_ coro_current);
1609 prepare_schedule (aTHX_ ta); 2066 prepare_schedule (aTHX_ ta);
1610} 2067}
1611 2068
1612INLINE void 2069ecb_inline void
1613prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2070prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1614{ 2071{
1615 SV *prev = SvRV (coro_current); 2072 SV *prev = SvRV (coro_current);
1616 2073
1617 if (coro_nready) 2074 if (coro_nready)
… …
1630 2087
1631 prepare_schedule (aTHX_ &ta); 2088 prepare_schedule (aTHX_ &ta);
1632 TRANSFER (ta, 1); 2089 TRANSFER (ta, 1);
1633} 2090}
1634 2091
2092static void
2093api_schedule_to (pTHX_ SV *coro_sv)
2094{
2095 struct coro_transfer_args ta;
2096 struct coro *next = SvSTATE (coro_sv);
2097
2098 SvREFCNT_inc_NN (coro_sv);
2099 prepare_schedule_to (aTHX_ &ta, next);
2100}
2101
1635static int 2102static int
1636api_cede (pTHX) 2103api_cede (pTHX)
1637{ 2104{
1638 struct coro_transfer_args ta; 2105 struct coro_transfer_args ta;
1639 2106
1640 prepare_cede (aTHX_ &ta); 2107 prepare_cede (aTHX_ &ta);
1641 2108
1642 if (expect_true (ta.prev != ta.next)) 2109 if (ecb_expect_true (ta.prev != ta.next))
1643 { 2110 {
1644 TRANSFER (ta, 1); 2111 TRANSFER (ta, 1);
1645 return 1; 2112 return 1;
1646 } 2113 }
1647 else 2114 else
… …
1666static void 2133static void
1667api_trace (pTHX_ SV *coro_sv, int flags) 2134api_trace (pTHX_ SV *coro_sv, int flags)
1668{ 2135{
1669 struct coro *coro = SvSTATE (coro_sv); 2136 struct coro *coro = SvSTATE (coro_sv);
1670 2137
2138 if (coro->flags & CF_RUNNING)
2139 croak ("cannot enable tracing on a running coroutine, caught");
2140
1671 if (flags & CC_TRACE) 2141 if (flags & CC_TRACE)
1672 { 2142 {
1673 if (!coro->cctx) 2143 if (!coro->cctx)
1674 coro->cctx = cctx_new_run (); 2144 coro->cctx = cctx_new_run ();
1675 else if (!(coro->cctx->flags & CC_TRACE)) 2145 else if (!(coro->cctx->flags & CC_TRACE))
1676 croak ("cannot enable tracing on coroutine with custom stack,"); 2146 croak ("cannot enable tracing on coroutine with custom stack, caught");
1677 2147
1678 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2148 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1679 } 2149 }
1680 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2150 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1681 { 2151 {
… …
1684 if (coro->flags & CF_RUNNING) 2154 if (coro->flags & CF_RUNNING)
1685 PL_runops = RUNOPS_DEFAULT; 2155 PL_runops = RUNOPS_DEFAULT;
1686 else 2156 else
1687 coro->slot->runops = RUNOPS_DEFAULT; 2157 coro->slot->runops = RUNOPS_DEFAULT;
1688 } 2158 }
2159}
2160
2161static void
2162coro_push_av (pTHX_ AV *av, I32 gimme_v)
2163{
2164 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2165 {
2166 dSP;
2167
2168 if (gimme_v == G_SCALAR)
2169 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2170 else
2171 {
2172 int i;
2173 EXTEND (SP, AvFILLp (av) + 1);
2174
2175 for (i = 0; i <= AvFILLp (av); ++i)
2176 PUSHs (AvARRAY (av)[i]);
2177 }
2178
2179 PUTBACK;
2180 }
2181}
2182
2183static void
2184coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2185{
2186 if (!coro->on_destroy)
2187 coro->on_destroy = newAV ();
2188
2189 av_push (coro->on_destroy, cb);
2190}
2191
2192static void
2193slf_destroy_join (pTHX_ struct CoroSLF *frame)
2194{
2195 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2196}
2197
2198static int
2199slf_check_join (pTHX_ struct CoroSLF *frame)
2200{
2201 struct coro *coro = (struct coro *)frame->data;
2202
2203 if (!coro->status)
2204 return 1;
2205
2206 frame->destroy = 0;
2207
2208 coro_push_av (aTHX_ coro->status, GIMME_V);
2209
2210 SvREFCNT_dec ((SV *)coro->hv);
2211
2212 return 0;
2213}
2214
2215static void
2216slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2217{
2218 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2219
2220 if (items > 1)
2221 croak ("join called with too many arguments");
2222
2223 if (coro->status)
2224 frame->prepare = prepare_nop;
2225 else
2226 {
2227 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2228 frame->prepare = prepare_schedule;
2229 }
2230
2231 frame->check = slf_check_join;
2232 frame->destroy = slf_destroy_join;
2233 frame->data = (void *)coro;
2234 SvREFCNT_inc (coro->hv);
2235}
2236
2237static void
2238coro_call_on_destroy (pTHX_ struct coro *coro)
2239{
2240 AV *od = coro->on_destroy;
2241
2242 if (!od)
2243 return;
2244
2245 coro->on_destroy = 0;
2246 sv_2mortal ((SV *)od);
2247
2248 while (AvFILLp (od) >= 0)
2249 {
2250 SV *cb = sv_2mortal (av_pop (od));
2251
2252 /* coro hv's (and only hv's at the moment) are supported as well */
2253 if (SvSTATEhv_p (aTHX_ cb))
2254 api_ready (aTHX_ cb);
2255 else
2256 {
2257 dSP; /* don't disturb outer sp */
2258 PUSHMARK (SP);
2259
2260 if (coro->status)
2261 {
2262 PUTBACK;
2263 coro_push_av (aTHX_ coro->status, G_ARRAY);
2264 SPAGAIN;
2265 }
2266
2267 PUTBACK;
2268 call_sv (cb, G_VOID | G_DISCARD);
2269 }
2270 }
2271}
2272
2273static void
2274coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2275{
2276 AV *av;
2277
2278 if (coro->status)
2279 {
2280 av = coro->status;
2281 av_clear (av);
2282 }
2283 else
2284 av = coro->status = newAV ();
2285
2286 /* items are actually not so common, so optimise for this case */
2287 if (items)
2288 {
2289 int i;
2290
2291 av_extend (av, items - 1);
2292
2293 for (i = 0; i < items; ++i)
2294 av_push (av, SvREFCNT_inc_NN (arg [i]));
2295 }
2296}
2297
2298static void
2299slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2300{
2301 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2302 api_ready (aTHX_ sv_manager);
2303
2304 frame->prepare = prepare_schedule;
2305 frame->check = slf_check_repeat;
2306
2307 /* as a minor optimisation, we could unwind all stacks here */
2308 /* but that puts extra pressure on pp_slf, and is not worth much */
2309 /*coro_unwind_stacks (aTHX);*/
2310}
2311
2312static void
2313slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2314{
2315 HV *coro_hv = (HV *)SvRV (coro_current);
2316
2317 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2318 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2319}
2320
2321static void
2322slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2323{
2324 HV *coro_hv;
2325 struct coro *coro;
2326
2327 if (items <= 0)
2328 croak ("Coro::cancel called without coro object,");
2329
2330 coro = SvSTATE (arg [0]);
2331 coro_hv = coro->hv;
2332
2333 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2334
2335 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2336 {
2337 /* coro currently busy cancelling something, so just notify it */
2338 coro->slf_frame.data = (void *)coro;
2339
2340 frame->prepare = prepare_nop;
2341 frame->check = slf_check_nop;
2342 }
2343 else if (coro_hv == (HV *)SvRV (coro_current))
2344 {
2345 /* cancelling the current coro is allowed, and equals terminate */
2346 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2347 }
2348 else
2349 {
2350 struct coro *self = SvSTATE_current;
2351
2352 if (!self)
2353 croak ("Coro::cancel called outside of thread content,");
2354
2355 /* otherwise we cancel directly, purely for speed reasons
2356 * unfortunately, this requires some magic trickery, as
2357 * somebody else could cancel us, so we have to fight the cancellation.
2358 * this is ugly, and hopefully fully worth the extra speed.
2359 * besides, I can't get the slow-but-safe version working...
2360 */
2361 slf_frame.data = 0;
2362 self->flags |= CF_NOCANCEL;
2363 coro_state_destroy (aTHX_ coro);
2364 self->flags &= ~CF_NOCANCEL;
2365
2366 if (slf_frame.data)
2367 {
2368 /* while we were busy we have been cancelled, so terminate */
2369 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2370 }
2371 else
2372 {
2373 frame->prepare = prepare_nop;
2374 frame->check = slf_check_nop;
2375 }
2376 }
2377}
2378
2379static int
2380slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2381{
2382 frame->prepare = 0;
2383 coro_unwind_stacks (aTHX);
2384
2385 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2386
2387 return 1;
2388}
2389
2390static int
2391safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2392{
2393 if (coro->cctx)
2394 croak ("coro inside C callback, unable to cancel at this time, caught");
2395
2396 if (coro->flags & (CF_NEW | CF_ZOMBIE))
2397 {
2398 coro_set_status (aTHX_ coro, arg, items);
2399 coro_state_destroy (aTHX_ coro);
2400 }
2401 else
2402 {
2403 if (!coro->slf_frame.prepare)
2404 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2405
2406 slf_destroy (aTHX_ coro);
2407
2408 coro_set_status (aTHX_ coro, arg, items);
2409 coro->slf_frame.prepare = prepare_nop;
2410 coro->slf_frame.check = slf_check_safe_cancel;
2411
2412 api_ready (aTHX_ (SV *)coro->hv);
2413 }
2414
2415 return 1;
2416}
2417
2418/*****************************************************************************/
2419/* async pool handler */
2420
2421static int
2422slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2423{
2424 HV *hv = (HV *)SvRV (coro_current);
2425 struct coro *coro = (struct coro *)frame->data;
2426
2427 if (!coro->invoke_cb)
2428 return 1; /* loop till we have invoke */
2429 else
2430 {
2431 hv_store (hv, "desc", sizeof ("desc") - 1,
2432 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2433
2434 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2435
2436 {
2437 dSP;
2438 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2439 PUTBACK;
2440 }
2441
2442 SvREFCNT_dec (GvAV (PL_defgv));
2443 GvAV (PL_defgv) = coro->invoke_av;
2444 coro->invoke_av = 0;
2445
2446 return 0;
2447 }
2448}
2449
2450static void
2451slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2452{
2453 HV *hv = (HV *)SvRV (coro_current);
2454 struct coro *coro = SvSTATE_hv ((SV *)hv);
2455
2456 if (ecb_expect_true (coro->saved_deffh))
2457 {
2458 /* subsequent iteration */
2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460 coro->saved_deffh = 0;
2461
2462 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2463 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2464 {
2465 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2466 return;
2467 }
2468 else
2469 {
2470 av_clear (GvAV (PL_defgv));
2471 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2472
2473 if (ecb_expect_false (coro->swap_sv))
2474 {
2475 SWAP_SVS_LEAVE (coro);
2476 SvREFCNT_dec_NN (coro->swap_sv);
2477 coro->swap_sv = 0;
2478 }
2479
2480 coro->prio = 0;
2481
2482 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2483 api_trace (aTHX_ coro_current, 0);
2484
2485 frame->prepare = prepare_schedule;
2486 av_push (av_async_pool, SvREFCNT_inc_NN (hv));
2487 }
2488 }
2489 else
2490 {
2491 /* first iteration, simply fall through */
2492 frame->prepare = prepare_nop;
2493 }
2494
2495 frame->check = slf_check_pool_handler;
2496 frame->data = (void *)coro;
2497}
2498
2499/*****************************************************************************/
2500/* rouse callback */
2501
2502#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2503
2504static void
2505coro_rouse_callback (pTHX_ CV *cv)
2506{
2507 dXSARGS;
2508 SV *data = (SV *)S_GENSUB_ARG;
2509
2510 /* data starts being the coro, and is replaced by the results when done */
2511 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2512 {
2513 /* first call, set args */
2514 SV *coro = SvRV (data);
2515 AV *av = newAV ();
2516
2517 SvRV_set (data, (SV *)av);
2518
2519 /* better take a full copy of the arguments */
2520 while (items--)
2521 av_store (av, items, newSVsv (ST (items)));
2522
2523 api_ready (aTHX_ coro);
2524 SvREFCNT_dec_NN (coro);
2525 }
2526
2527 XSRETURN_EMPTY;
2528}
2529
2530static int
2531slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2532{
2533 SV *data = (SV *)frame->data;
2534
2535 if (CORO_THROW)
2536 return 0;
2537
2538 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2539 return 1;
2540
2541 /* now push all results on the stack */
2542 {
2543 dSP;
2544 AV *av = (AV *)SvRV (data);
2545 int i;
2546
2547 EXTEND (SP, AvFILLp (av) + 1);
2548 for (i = 0; i <= AvFILLp (av); ++i)
2549 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2550
2551 /* we have stolen the elements, so set length to zero and free */
2552 AvFILLp (av) = -1;
2553 av_undef (av);
2554
2555 PUTBACK;
2556 }
2557
2558 return 0;
2559}
2560
2561static void
2562slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2563{
2564 SV *cb;
2565
2566 if (items)
2567 cb = arg [0];
2568 else
2569 {
2570 struct coro *coro = SvSTATE_current;
2571
2572 if (!coro->rouse_cb)
2573 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2574
2575 cb = sv_2mortal (coro->rouse_cb);
2576 coro->rouse_cb = 0;
2577 }
2578
2579 if (!SvROK (cb)
2580 || SvTYPE (SvRV (cb)) != SVt_PVCV
2581 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2582 croak ("Coro::rouse_wait called with illegal callback argument,");
2583
2584 {
2585 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2586 SV *data = (SV *)S_GENSUB_ARG;
2587
2588 frame->data = (void *)data;
2589 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2590 frame->check = slf_check_rouse_wait;
2591 }
2592}
2593
2594static SV *
2595coro_new_rouse_cb (pTHX)
2596{
2597 HV *hv = (HV *)SvRV (coro_current);
2598 struct coro *coro = SvSTATE_hv (hv);
2599 SV *data = newRV_inc ((SV *)hv);
2600 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2601
2602 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2603 SvREFCNT_dec_NN (data); /* magicext increases the refcount */
2604
2605 SvREFCNT_dec (coro->rouse_cb);
2606 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2607
2608 return cb;
1689} 2609}
1690 2610
1691/*****************************************************************************/ 2611/*****************************************************************************/
1692/* schedule-like-function opcode (SLF) */ 2612/* schedule-like-function opcode (SLF) */
1693 2613
… …
1717 2637
1718 RETURNOP (slf_restore.op_first); 2638 RETURNOP (slf_restore.op_first);
1719} 2639}
1720 2640
1721static void 2641static void
1722slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1723{
1724 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1725}
1726
1727static void
1728slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1729{
1730 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1731
1732 frame->prepare = slf_prepare_set_stacklevel;
1733 frame->check = slf_check_nop;
1734 frame->data = (void *)SvIV (arg [0]);
1735}
1736
1737static void
1738slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2642slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1739{ 2643{
1740 SV **arg = (SV **)slf_frame.data; 2644 SV **arg = (SV **)slf_frame.data;
1741 2645
1742 prepare_transfer (aTHX_ ta, arg [0], arg [1]); 2646 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
… …
1759 frame->prepare = prepare_schedule; 2663 frame->prepare = prepare_schedule;
1760 frame->check = slf_check_nop; 2664 frame->check = slf_check_nop;
1761} 2665}
1762 2666
1763static void 2667static void
2668slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2669{
2670 struct coro *next = (struct coro *)slf_frame.data;
2671
2672 SvREFCNT_inc_NN (next->hv);
2673 prepare_schedule_to (aTHX_ ta, next);
2674}
2675
2676static void
2677slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2678{
2679 if (!items)
2680 croak ("Coro::schedule_to expects a coroutine argument, caught");
2681
2682 frame->data = (void *)SvSTATE (arg [0]);
2683 frame->prepare = slf_prepare_schedule_to;
2684 frame->check = slf_check_nop;
2685}
2686
2687static void
2688slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2689{
2690 api_ready (aTHX_ SvRV (coro_current));
2691
2692 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2693}
2694
2695static void
1764slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2696slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1765{ 2697{
1766 frame->prepare = prepare_cede; 2698 frame->prepare = prepare_cede;
1767 frame->check = slf_check_nop; 2699 frame->check = slf_check_nop;
1768} 2700}
… …
1772{ 2704{
1773 frame->prepare = prepare_cede_notself; 2705 frame->prepare = prepare_cede_notself;
1774 frame->check = slf_check_nop; 2706 frame->check = slf_check_nop;
1775} 2707}
1776 2708
1777/* we hijack an hopefully unused CV flag for our purposes */ 2709/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
1778#define CVf_SLF 0x4000 2710static void
2711slf_destroy (pTHX_ struct coro *coro)
2712{
2713 struct CoroSLF frame = coro->slf_frame;
2714
2715 /*
2716 * The on_destroy below most likely is from an SLF call.
2717 * Since by definition the SLF call will not finish when we destroy
2718 * the coro, we will have to force-finish it here, otherwise
2719 * cleanup functions cannot call SLF functions.
2720 */
2721 coro->slf_frame.prepare = 0;
2722
2723 /* this callback is reserved for slf functions needing to do cleanup */
2724 if (frame.destroy && frame.prepare && !PL_dirty)
2725 frame.destroy (aTHX_ &frame);
2726}
1779 2727
1780/* 2728/*
1781 * these not obviously related functions are all rolled into one 2729 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same 2730 * function to increase chances that they all will call transfer with the same
1783 * stack offset 2731 * stack offset
… …
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2737 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790 2738
1791 /* set up the slf frame, unless it has already been set-up */ 2739 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */ 2740 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */ 2741 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare)) 2742 if (ecb_expect_true (!slf_frame.prepare))
1795 { 2743 {
1796 /* first iteration */ 2744 /* first iteration */
1797 dSP; 2745 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1; 2746 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */ 2747 int items = SP - arg; /* args without function object */
… …
1839 } 2787 }
1840 while (slf_frame.check (aTHX_ &slf_frame)); 2788 while (slf_frame.check (aTHX_ &slf_frame));
1841 2789
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2790 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843 2791
1844 /* return value handling - mostly like entersub */
1845 {
1846 dSP;
1847 SV **bot = PL_stack_base + checkmark;
1848 int gimme = GIMME_V;
1849
1850 /* make sure we put something on the stack in scalar context */
1851 if (gimme == G_SCALAR)
1852 {
1853 if (sp == bot)
1854 XPUSHs (&PL_sv_undef);
1855
1856 SP = bot + 1;
1857 }
1858
1859 PUTBACK;
1860 }
1861
1862 /* exception handling */ 2792 /* exception handling */
1863 if (expect_false (coro_throw)) 2793 if (ecb_expect_false (CORO_THROW))
1864 { 2794 {
1865 SV *exception = sv_2mortal (coro_throw); 2795 SV *exception = sv_2mortal (CORO_THROW);
1866 2796
1867 coro_throw = 0; 2797 CORO_THROW = 0;
1868 sv_setsv (ERRSV, exception); 2798 sv_setsv (ERRSV, exception);
1869 croak (0); 2799 croak (0);
2800 }
2801
2802 /* return value handling - mostly like entersub */
2803 /* make sure we put something on the stack in scalar context */
2804 if (GIMME_V == G_SCALAR
2805 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2806 {
2807 dSP;
2808 SV **bot = PL_stack_base + checkmark;
2809
2810 if (sp == bot) /* too few, push undef */
2811 bot [1] = &PL_sv_undef;
2812 else /* too many, take last one */
2813 bot [1] = *sp;
2814
2815 SP = bot + 1;
2816
2817 PUTBACK;
1870 } 2818 }
1871 2819
1872 return NORMAL; 2820 return NORMAL;
1873} 2821}
1874 2822
… …
1902 if (PL_op->op_flags & OPf_STACKED) 2850 if (PL_op->op_flags & OPf_STACKED)
1903 { 2851 {
1904 if (items > slf_arga) 2852 if (items > slf_arga)
1905 { 2853 {
1906 slf_arga = items; 2854 slf_arga = items;
1907 free (slf_argv); 2855 Safefree (slf_argv);
1908 slf_argv = malloc (slf_arga * sizeof (SV *)); 2856 New (0, slf_argv, slf_arga, SV *);
1909 } 2857 }
1910 2858
1911 slf_argc = items; 2859 slf_argc = items;
1912 2860
1913 for (i = 0; i < items; ++i) 2861 for (i = 0; i < items; ++i)
… …
1915 } 2863 }
1916 else 2864 else
1917 slf_argc = 0; 2865 slf_argc = 0;
1918 2866
1919 PL_op->op_ppaddr = pp_slf; 2867 PL_op->op_ppaddr = pp_slf;
1920 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2868 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1921 2869
1922 PL_op = (OP *)&slf_restore; 2870 PL_op = (OP *)&slf_restore;
2871}
2872
2873/*****************************************************************************/
2874/* dynamic wind */
2875
2876static void
2877on_enterleave_call (pTHX_ SV *cb)
2878{
2879 dSP;
2880
2881 PUSHSTACK;
2882
2883 PUSHMARK (SP);
2884 PUTBACK;
2885 call_sv (cb, G_VOID | G_DISCARD);
2886 SPAGAIN;
2887
2888 POPSTACK;
2889}
2890
2891static SV *
2892coro_avp_pop_and_free (pTHX_ AV **avp)
2893{
2894 AV *av = *avp;
2895 SV *res = av_pop (av);
2896
2897 if (AvFILLp (av) < 0)
2898 {
2899 *avp = 0;
2900 SvREFCNT_dec (av);
2901 }
2902
2903 return res;
2904}
2905
2906static void
2907coro_pop_on_enter (pTHX_ void *coro)
2908{
2909 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2910 SvREFCNT_dec (cb);
2911}
2912
2913static void
2914coro_pop_on_leave (pTHX_ void *coro)
2915{
2916 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2917 on_enterleave_call (aTHX_ sv_2mortal (cb));
2918}
2919
2920static void
2921enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2922{
2923 if (!hook)
2924 return;
2925
2926 if (!*avp)
2927 {
2928 *avp = newAV ();
2929 AvREAL_off (*avp);
2930 }
2931
2932 av_push (*avp, (SV *)hook);
2933 av_push (*avp, (SV *)arg);
2934}
2935
2936static void
2937enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2938{
2939 AV *av = *avp;
2940 int i;
2941
2942 if (!av)
2943 return;
2944
2945 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2946 if (AvARRAY (av)[i] == (SV *)hook)
2947 {
2948 if (execute)
2949 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2950
2951 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2952 av_pop (av);
2953 av_pop (av);
2954 break;
2955 }
2956
2957 if (AvFILLp (av) >= 0)
2958 {
2959 *avp = 0;
2960 SvREFCNT_dec_NN (av);
2961 }
2962}
2963
2964static void
2965api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2966{
2967 struct coro *coro = SvSTATE (coro_sv);
2968
2969 if (SvSTATE_current == coro)
2970 if (enter)
2971 enter (aTHX_ enter_arg);
2972
2973 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2974 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2975}
2976
2977static void
2978api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2979{
2980 struct coro *coro = SvSTATE (coro_sv);
2981
2982 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2983 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2984}
2985
2986static void
2987savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2988{
2989 struct coro *coro = SvSTATE_current;
2990
2991 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2992}
2993
2994static void
2995savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2996{
2997 struct coro *coro = SvSTATE_current;
2998
2999 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
3000}
3001
3002static void
3003api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
3004{
3005 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
3006
3007 /* this ought to be much cheaper than malloc + a single destructor call */
3008 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
3009 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
1923} 3010}
1924 3011
1925/*****************************************************************************/ 3012/*****************************************************************************/
1926/* PerlIO::cede */ 3013/* PerlIO::cede */
1927 3014
… …
1929{ 3016{
1930 PerlIOBuf base; 3017 PerlIOBuf base;
1931 NV next, every; 3018 NV next, every;
1932} PerlIOCede; 3019} PerlIOCede;
1933 3020
1934static IV 3021static IV ecb_cold
1935PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 3022PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1936{ 3023{
1937 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3024 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1938 3025
1939 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3026 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1940 self->next = nvtime () + self->every; 3027 self->next = nvtime () + self->every;
1941 3028
1942 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3029 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1943} 3030}
1944 3031
1945static SV * 3032static SV * ecb_cold
1946PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3033PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1947{ 3034{
1948 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3035 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1949 3036
1950 return newSVnv (self->every); 3037 return newSVnv (self->every);
… …
1996 PerlIOBuf_get_cnt, 3083 PerlIOBuf_get_cnt,
1997 PerlIOBuf_set_ptrcnt, 3084 PerlIOBuf_set_ptrcnt,
1998}; 3085};
1999 3086
2000/*****************************************************************************/ 3087/*****************************************************************************/
3088/* Coro::Semaphore & Coro::Signal */
3089
3090static SV *
3091coro_waitarray_new (pTHX_ int count)
3092{
3093 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3094 AV *av = newAV ();
3095 SV **ary;
3096
3097 /* unfortunately, building manually saves memory */
3098 Newx (ary, 2, SV *);
3099 AvALLOC (av) = ary;
3100#if PERL_VERSION_ATLEAST (5,10,0)
3101 AvARRAY (av) = ary;
3102#else
3103 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3104 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3105 SvPVX ((SV *)av) = (char *)ary;
3106#endif
3107 AvMAX (av) = 1;
3108 AvFILLp (av) = 0;
3109 ary [0] = newSViv (count);
3110
3111 return newRV_noinc ((SV *)av);
3112}
3113
2001/* Coro::Semaphore */ 3114/* semaphore */
2002 3115
2003static void 3116static void
2004coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 3117coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2005{ 3118{
2006 SV *count_sv = AvARRAY (av)[0]; 3119 SV *count_sv = AvARRAY (av)[0];
… …
2018 AvARRAY (av)[0] = AvARRAY (av)[1]; 3131 AvARRAY (av)[0] = AvARRAY (av)[1];
2019 AvARRAY (av)[1] = count_sv; 3132 AvARRAY (av)[1] = count_sv;
2020 cb = av_shift (av); 3133 cb = av_shift (av);
2021 3134
2022 if (SvOBJECT (cb)) 3135 if (SvOBJECT (cb))
3136 {
2023 api_ready (aTHX_ cb); 3137 api_ready (aTHX_ cb);
2024 else 3138 --count;
2025 croak ("callbacks not yet supported"); 3139 }
3140 else if (SvTYPE (cb) == SVt_PVCV)
3141 {
3142 dSP;
3143 PUSHMARK (SP);
3144 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3145 PUTBACK;
3146 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3147 }
2026 3148
2027 SvREFCNT_dec (cb); 3149 SvREFCNT_dec_NN (cb);
2028
2029 --count;
2030 } 3150 }
2031} 3151}
2032 3152
2033static void 3153static void
2034coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3154coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2035{ 3155{
2036 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3156 /* call $sem->adjust (0) to possibly wake up some other waiters */
2037 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3157 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2038} 3158}
2039 3159
2040static int 3160static int
2041slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3161slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2042{ 3162{
2043 AV *av = (AV *)frame->data; 3163 AV *av = (AV *)frame->data;
2044 SV *count_sv = AvARRAY (av)[0]; 3164 SV *count_sv = AvARRAY (av)[0];
3165 SV *coro_hv = SvRV (coro_current);
2045 3166
3167 frame->destroy = 0;
3168
3169 /* if we are about to throw, don't actually acquire the lock, just throw */
3170 if (ecb_expect_false (CORO_THROW))
3171 {
3172 /* we still might be responsible for the semaphore, so wake up others */
3173 coro_semaphore_adjust (aTHX_ av, 0);
3174
3175 return 0;
3176 }
2046 if (SvIVX (count_sv) > 0) 3177 else if (SvIVX (count_sv) > 0)
2047 { 3178 {
2048 SvSTATE_current->on_destroy = 0; 3179 if (acquire)
2049 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3180 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3181 else
3182 coro_semaphore_adjust (aTHX_ av, 0);
3183
2050 return 0; 3184 return 0;
2051 } 3185 }
2052 else 3186 else
2053 { 3187 {
2054 int i; 3188 int i;
2055 /* if we were woken up but can't down, we look through the whole */ 3189 /* if we were woken up but can't down, we look through the whole */
2056 /* waiters list and only add us if we aren't in there already */ 3190 /* waiters list and only add us if we aren't in there already */
2057 /* this avoids some degenerate memory usage cases */ 3191 /* this avoids some degenerate memory usage cases */
2058 3192 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2059 for (i = 1; i <= AvFILLp (av); ++i)
2060 if (AvARRAY (av)[i] == SvRV (coro_current)) 3193 if (AvARRAY (av)[i] == coro_hv)
2061 return 1; 3194 return 1;
2062 3195
2063 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3196 av_push (av, SvREFCNT_inc (coro_hv));
2064 return 1; 3197 return 1;
2065 } 3198 }
2066} 3199}
2067 3200
2068static void 3201static int
3202slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3203{
3204 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3205}
3206
3207static int
3208slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3209{
3210 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3211}
3212
3213static void
2069slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3214slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2070{ 3215{
2071 AV *av = (AV *)SvRV (arg [0]); 3216 AV *av = (AV *)SvRV (arg [0]);
2072 3217
2073 if (SvIVX (AvARRAY (av)[0]) > 0) 3218 if (SvIVX (AvARRAY (av)[0]) > 0)
2074 { 3219 {
2075 frame->data = (void *)av; 3220 frame->data = (void *)av;
2076 frame->prepare = prepare_nop; 3221 frame->prepare = prepare_nop;
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 } 3222 }
2079 else 3223 else
2080 { 3224 {
2081 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3225 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2082 3226
2083 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3227 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2084 frame->prepare = prepare_schedule; 3228 frame->prepare = prepare_schedule;
2085
2086 /* to avoid race conditions when a woken-up coro gets terminated */ 3229 /* to avoid race conditions when a woken-up coro gets terminated */
2087 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3230 /* we arrange for a temporary on_destroy that calls adjust (0) */
2088 assert (!SvSTATE_current->on_destroy);//D
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3231 frame->destroy = coro_semaphore_destroy;
2090 } 3232 }
3233}
2091 3234
3235static void
3236slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3237{
3238 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2092 frame->check = slf_check_semaphore_down; 3239 frame->check = slf_check_semaphore_down;
2093
2094} 3240}
2095 3241
2096/*****************************************************************************/ 3242static void
2097/* gensub: simple closure generation utility */ 3243slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 3244{
2107 CV *cv = (CV *)newSV (0); 3245 if (items >= 2)
3246 {
3247 /* callback form */
3248 AV *av = (AV *)SvRV (arg [0]);
3249 SV *cb_cv = s_get_cv_croak (arg [1]);
2108 3250
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 3251 av_push (av, SvREFCNT_inc_NN (cb_cv));
2110 3252
2111 CvANON_on (cv); 3253 if (SvIVX (AvARRAY (av)[0]) > 0)
2112 CvISXSUB_on (cv); 3254 coro_semaphore_adjust (aTHX_ av, 0);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 3255
2116 return newRV_noinc ((SV *)cv); 3256 frame->prepare = prepare_nop;
3257 frame->check = slf_check_nop;
3258 }
3259 else
3260 {
3261 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3262 frame->check = slf_check_semaphore_wait;
3263 }
3264}
3265
3266/* signal */
3267
3268static void
3269coro_signal_wake (pTHX_ AV *av, int count)
3270{
3271 SvIVX (AvARRAY (av)[0]) = 0;
3272
3273 /* now signal count waiters */
3274 while (count > 0 && AvFILLp (av) > 0)
3275 {
3276 SV *cb;
3277
3278 /* swap first two elements so we can shift a waiter */
3279 cb = AvARRAY (av)[0];
3280 AvARRAY (av)[0] = AvARRAY (av)[1];
3281 AvARRAY (av)[1] = cb;
3282
3283 cb = av_shift (av);
3284
3285 if (SvTYPE (cb) == SVt_PVCV)
3286 {
3287 dSP;
3288 PUSHMARK (SP);
3289 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3290 PUTBACK;
3291 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3292 }
3293 else
3294 {
3295 api_ready (aTHX_ cb);
3296 sv_setiv (cb, 0); /* signal waiter */
3297 }
3298
3299 SvREFCNT_dec_NN (cb);
3300
3301 --count;
3302 }
3303}
3304
3305static int
3306slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3307{
3308 /* if we are about to throw, also stop waiting */
3309 return SvROK ((SV *)frame->data) && !CORO_THROW;
3310}
3311
3312static void
3313slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3314{
3315 AV *av = (AV *)SvRV (arg [0]);
3316
3317 if (items >= 2)
3318 {
3319 SV *cb_cv = s_get_cv_croak (arg [1]);
3320 av_push (av, SvREFCNT_inc_NN (cb_cv));
3321
3322 if (SvIVX (AvARRAY (av)[0]))
3323 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3324
3325 frame->prepare = prepare_nop;
3326 frame->check = slf_check_nop;
3327 }
3328 else if (SvIVX (AvARRAY (av)[0]))
3329 {
3330 SvIVX (AvARRAY (av)[0]) = 0;
3331 frame->prepare = prepare_nop;
3332 frame->check = slf_check_nop;
3333 }
3334 else
3335 {
3336 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3337
3338 av_push (av, waiter);
3339
3340 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3341 frame->prepare = prepare_schedule;
3342 frame->check = slf_check_signal_wait;
3343 }
2117} 3344}
2118 3345
2119/*****************************************************************************/ 3346/*****************************************************************************/
2120/* Coro::AIO */ 3347/* Coro::AIO */
2121 3348
… …
2132 3359
2133static void 3360static void
2134coro_aio_callback (pTHX_ CV *cv) 3361coro_aio_callback (pTHX_ CV *cv)
2135{ 3362{
2136 dXSARGS; 3363 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG; 3364 AV *state = (AV *)S_GENSUB_ARG;
2138 SV *coro = av_pop (state); 3365 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state)); 3366 SV *data_sv = newSV (sizeof (struct io_state));
2140 3367
2141 av_extend (state, items); 3368 av_extend (state, items - 1);
2142 3369
2143 sv_upgrade (data_sv, SVt_PV); 3370 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state)); 3371 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv); 3372 SvPOK_only (data_sv);
2146 3373
… …
2162 } 3389 }
2163 3390
2164 av_push (state, data_sv); 3391 av_push (state, data_sv);
2165 3392
2166 api_ready (aTHX_ coro); 3393 api_ready (aTHX_ coro);
2167 SvREFCNT_dec (coro); 3394 SvREFCNT_dec_NN (coro);
2168 SvREFCNT_dec ((AV *)state); 3395 SvREFCNT_dec_NN ((AV *)state);
2169} 3396}
2170 3397
2171static int 3398static int
2172slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3399slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173{ 3400{
2174 AV *state = (AV *)frame->data; 3401 AV *state = (AV *)frame->data;
2175 3402
3403 /* if we are about to throw, return early */
3404 /* this does not cancel the aio request, but at least */
3405 /* it quickly returns */
3406 if (CORO_THROW)
3407 return 0;
3408
2176 /* one element that is an RV? repeat! */ 3409 /* one element that is an RV? repeat! */
2177 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3410 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2178 return 1; 3411 return 1;
2179 3412
2180 /* restore status */ 3413 /* restore status */
2181 { 3414 {
2182 SV *data_sv = av_pop (state); 3415 SV *data_sv = av_pop (state);
… …
2185 errno = data->errorno; 3418 errno = data->errorno;
2186 PL_laststype = data->laststype; 3419 PL_laststype = data->laststype;
2187 PL_laststatval = data->laststatval; 3420 PL_laststatval = data->laststatval;
2188 PL_statcache = data->statcache; 3421 PL_statcache = data->statcache;
2189 3422
2190 SvREFCNT_dec (data_sv); 3423 SvREFCNT_dec_NN (data_sv);
2191 } 3424 }
2192 3425
2193 /* push result values */ 3426 /* push result values */
2194 { 3427 {
2195 dSP; 3428 dSP;
… …
2221 dSP; 3454 dSP;
2222 3455
2223 static SV *prio_cv; 3456 static SV *prio_cv;
2224 static SV *prio_sv; 3457 static SV *prio_sv;
2225 3458
2226 if (expect_false (!prio_cv)) 3459 if (ecb_expect_false (!prio_cv))
2227 { 3460 {
2228 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3461 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2229 prio_sv = newSViv (0); 3462 prio_sv = newSViv (0);
2230 } 3463 }
2231 3464
… …
2250 3483
2251 for (i = 0; i < items; ++i) 3484 for (i = 0; i < items; ++i)
2252 PUSHs (arg [i]); 3485 PUSHs (arg [i]);
2253 3486
2254 /* now push the callback closure */ 3487 /* now push the callback closure */
2255 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3488 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2256 3489
2257 /* now call the AIO function - we assume our request is uncancelable */ 3490 /* now call the AIO function - we assume our request is uncancelable */
2258 PUTBACK; 3491 PUTBACK;
2259 call_sv ((SV *)req, G_VOID | G_DISCARD); 3492 call_sv ((SV *)req, G_VOID | G_DISCARD);
2260 } 3493 }
2261 3494
2262 /* now that the requets is going, we loop toll we have a result */ 3495 /* now that the request is going, we loop till we have a result */
2263 frame->data = (void *)state; 3496 frame->data = (void *)state;
2264 frame->prepare = prepare_schedule; 3497 frame->prepare = prepare_schedule;
2265 frame->check = slf_check_aio_req; 3498 frame->check = slf_check_aio_req;
2266} 3499}
2267 3500
… …
2275 XSRETURN_EMPTY; 3508 XSRETURN_EMPTY;
2276} 3509}
2277 3510
2278/*****************************************************************************/ 3511/*****************************************************************************/
2279 3512
3513#if CORO_CLONE
3514# include "clone.c"
3515#endif
3516
3517/*****************************************************************************/
3518
3519static SV *
3520coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3521{
3522 SV *coro_sv;
3523 struct coro *coro;
3524 MAGIC *mg;
3525 HV *hv;
3526 SV *cb;
3527 int i;
3528
3529 if (argc > 0)
3530 {
3531 cb = s_get_cv_croak (argv [0]);
3532
3533 if (!is_coro)
3534 {
3535 if (CvISXSUB (cb))
3536 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3537
3538 if (!CvROOT (cb))
3539 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3540 }
3541 }
3542
3543 Newz (0, coro, 1, struct coro);
3544 coro->args = newAV ();
3545 coro->flags = CF_NEW;
3546
3547 if (coro_first) coro_first->prev = coro;
3548 coro->next = coro_first;
3549 coro_first = coro;
3550
3551 coro->hv = hv = newHV ();
3552 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3553 mg->mg_flags |= MGf_DUP;
3554 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3555
3556 if (argc > 0)
3557 {
3558 av_extend (coro->args, argc + is_coro - 1);
3559
3560 if (is_coro)
3561 {
3562 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3563 cb = (SV *)cv_coro_run;
3564 }
3565
3566 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3567
3568 for (i = 1; i < argc; i++)
3569 av_push (coro->args, newSVsv (argv [i]));
3570 }
3571
3572 return coro_sv;
3573}
3574
3575#ifndef __cplusplus
3576ecb_cold XS(boot_Coro__State);
3577#endif
3578
3579#if CORO_JIT
3580
3581static void ecb_noinline ecb_cold
3582pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3583{
3584 dSP;
3585 AV *av = newAV ();
3586
3587 av_store (av, 3, newSVuv (d));
3588 av_store (av, 2, newSVuv (c));
3589 av_store (av, 1, newSVuv (b));
3590 av_store (av, 0, newSVuv (a));
3591
3592 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3593
3594 PUTBACK;
3595}
3596
3597static void ecb_noinline ecb_cold
3598jit_init (pTHX)
3599{
3600 dSP;
3601 SV *load, *save;
3602 char *map_base;
3603 char *load_ptr, *save_ptr;
3604 STRLEN load_len, save_len, map_len;
3605 int count;
3606
3607 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3608
3609 PUSHMARK (SP);
3610 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3611 #include "state.h"
3612 count = call_pv ("Coro::State::_jit", G_ARRAY);
3613 SPAGAIN;
3614
3615 save = POPs; save_ptr = SvPVbyte (save, save_len);
3616 load = POPs; load_ptr = SvPVbyte (load, load_len);
3617
3618 map_len = load_len + save_len + 16;
3619
3620 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3621
3622 if (map_base == (char *)MAP_FAILED)
3623 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3624
3625 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3626
3627 load_perl_slots = (load_save_perl_slots_type)map_base;
3628 memcpy (map_base, load_ptr, load_len);
3629
3630 map_base += (load_len + 15) & ~15;
3631
3632 save_perl_slots = (load_save_perl_slots_type)map_base;
3633 memcpy (map_base, save_ptr, save_len);
3634
3635 /* we are good citizens and try to make the page read-only, so the evil evil */
3636 /* hackers might have it a bit more difficult */
3637 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3638
3639 PUTBACK;
3640 eval_pv ("undef &Coro::State::_jit", 1);
3641}
3642
3643#endif
3644
2280MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3645MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2281 3646
2282PROTOTYPES: DISABLE 3647PROTOTYPES: DISABLE
2283 3648
2284BOOT: 3649BOOT:
2285{ 3650{
3651#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3652#include "state.h"
2286#ifdef USE_ITHREADS 3653#ifdef USE_ITHREADS
2287# if CORO_PTHREAD 3654# if CORO_PTHREAD
2288 coro_thx = PERL_GET_CONTEXT; 3655 coro_thx = PERL_GET_CONTEXT;
2289# endif 3656# endif
2290#endif 3657#endif
2291 BOOT_PAGESIZE; 3658 /* perl defines these to check for existance first, but why it doesn't */
3659 /* just create them one at init time is not clear to me, except for */
3660 /* programs trying to delete them, but... */
3661 /* anyway, we declare this as invalid and make sure they are initialised here */
3662 DEFSV;
3663 ERRSV;
3664
3665 cctx_current = cctx_new_empty ();
2292 3666
2293 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3667 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2294 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3668 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2295 3669
2296 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3670 {
2297 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3671 /*
2298 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3672 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3673 * by coro_sig_vtbl in hash values.
3674 */
3675 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3676
3677 /* this only works if perl doesn't have a vtbl for %SIG */
3678 assert (!mg->mg_virtual);
3679
3680 /*
3681 * The irony is that the perl API itself asserts that mg_virtual
3682 * must be non-const, yet perl5porters insisted on marking their
3683 * vtbls as read-only, just to thwart perl modules from patching
3684 * them.
3685 */
3686 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3687 mg->mg_flags |= MGf_COPY;
3688
3689 coro_sigelem_vtbl = PL_vtbl_sigelem;
3690 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3691 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3692 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3693 }
2299 3694
2300 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2301 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3695 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2302 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3696 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2303 3697
2304 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3698 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
3699
3700 newCONSTSUB (coro_state_stash, "BACKEND", newSVpv (CORO_BACKEND, 0)); /* undocumented */
2305 3701
2306 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 3702 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
2307 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 3703 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
2308 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); 3704 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
2309 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); 3705 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
… …
2316 3712
2317 { 3713 {
2318 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3714 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319 3715
2320 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3716 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321 hv_store_ent (PL_custom_op_names, slf, 3717 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2322 newSVpv ("coro_slf", 0), 0);
2323 3718
2324 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3719 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325 hv_store_ent (PL_custom_op_descs, slf, 3720 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2326 newSVpv ("coro schedule like function", 0), 0);
2327 } 3721 }
2328 3722
2329 coroapi.ver = CORO_API_VERSION; 3723 coroapi.ver = CORO_API_VERSION;
2330 coroapi.rev = CORO_API_REVISION; 3724 coroapi.rev = CORO_API_REVISION;
2331 3725
… …
2336 coroapi.prepare_nop = prepare_nop; 3730 coroapi.prepare_nop = prepare_nop;
2337 coroapi.prepare_schedule = prepare_schedule; 3731 coroapi.prepare_schedule = prepare_schedule;
2338 coroapi.prepare_cede = prepare_cede; 3732 coroapi.prepare_cede = prepare_cede;
2339 coroapi.prepare_cede_notself = prepare_cede_notself; 3733 coroapi.prepare_cede_notself = prepare_cede_notself;
2340 3734
2341 { 3735 time_init (aTHX);
2342 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2343 3736
2344 if (!svp) croak ("Time::HiRes is required");
2345 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2346
2347 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2348 }
2349
2350 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3737 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3738#if CORO_JIT
3739 PUTBACK;
3740 jit_init (aTHX);
3741 SPAGAIN;
3742#endif
2351} 3743}
2352 3744
2353SV * 3745SV *
2354new (char *klass, ...) 3746new (SV *klass, ...)
3747 ALIAS:
3748 Coro::new = 1
2355 CODE: 3749 CODE:
2356{ 3750 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2357 struct coro *coro; 3751 OUTPUT:
2358 MAGIC *mg;
2359 HV *hv;
2360 int i;
2361
2362 Newz (0, coro, 1, struct coro);
2363 coro->args = newAV ();
2364 coro->flags = CF_NEW;
2365
2366 if (coro_first) coro_first->prev = coro;
2367 coro->next = coro_first;
2368 coro_first = coro;
2369
2370 coro->hv = hv = newHV ();
2371 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2372 mg->mg_flags |= MGf_DUP;
2373 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2374
2375 av_extend (coro->args, items - 1);
2376 for (i = 1; i < items; i++)
2377 av_push (coro->args, newSVsv (ST (i)));
2378}
2379 OUTPUT:
2380 RETVAL 3752 RETVAL
2381
2382void
2383_set_stacklevel (...)
2384 CODE:
2385 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2386 3753
2387void 3754void
2388transfer (...) 3755transfer (...)
2389 PROTOTYPE: $$ 3756 PROTOTYPE: $$
2390 CODE: 3757 CODE:
2391 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3758 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2392 3759
2393bool 3760SV *
2394_destroy (SV *coro_sv) 3761clone (Coro::State coro)
2395 CODE: 3762 CODE:
2396 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3763{
3764#if CORO_CLONE
3765 struct coro *ncoro = coro_clone (aTHX_ coro);
3766 MAGIC *mg;
3767 /* TODO: too much duplication */
3768 ncoro->hv = newHV ();
3769 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3770 mg->mg_flags |= MGf_DUP;
3771 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3772#else
3773 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3774#endif
3775}
2397 OUTPUT: 3776 OUTPUT:
2398 RETVAL 3777 RETVAL
2399
2400void
2401_exit (int code)
2402 PROTOTYPE: $
2403 CODE:
2404 _exit (code);
2405 3778
2406int 3779int
2407cctx_stacksize (int new_stacksize = 0) 3780cctx_stacksize (int new_stacksize = 0)
2408 PROTOTYPE: ;$ 3781 PROTOTYPE: ;$
2409 CODE: 3782 CODE:
… …
2445void 3818void
2446list () 3819list ()
2447 PROTOTYPE: 3820 PROTOTYPE:
2448 PPCODE: 3821 PPCODE:
2449{ 3822{
2450 struct coro *coro; 3823 struct coro *coro;
2451 for (coro = coro_first; coro; coro = coro->next) 3824 for (coro = coro_first; coro; coro = coro->next)
2452 if (coro->hv) 3825 if (coro->hv)
2453 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3826 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2454} 3827}
2455 3828
… …
2457call (Coro::State coro, SV *coderef) 3830call (Coro::State coro, SV *coderef)
2458 ALIAS: 3831 ALIAS:
2459 eval = 1 3832 eval = 1
2460 CODE: 3833 CODE:
2461{ 3834{
3835 struct coro *current = SvSTATE_current;
3836
2462 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3837 if ((coro == current) || (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)))
2463 { 3838 {
2464 struct coro temp; 3839 struct CoroSLF slf_save;
2465 3840
2466 if (!(coro->flags & CF_RUNNING)) 3841 if (current != coro)
2467 { 3842 {
2468 PUTBACK; 3843 PUTBACK;
2469 save_perl (aTHX_ &temp); 3844 save_perl (aTHX_ current);
2470 load_perl (aTHX_ coro); 3845 load_perl (aTHX_ coro);
3846 /* the coro is most likely in an active SLF call.
3847 * while not strictly required (the code we execute is
3848 * not allowed to call any SLF functions), it's cleaner
3849 * to reinitialise the slf_frame and restore it later.
3850 * This might one day allow us to actually do SLF calls
3851 * from code executed here.
3852 */
3853 slf_save = slf_frame;
3854 slf_frame.prepare = 0;
3855 SPAGAIN;
2471 } 3856 }
2472 3857
2473 {
2474 dSP;
2475 ENTER;
2476 SAVETMPS;
2477 PUTBACK;
2478 PUSHSTACK; 3858 PUSHSTACK;
3859
2479 PUSHMARK (SP); 3860 PUSHMARK (SP);
3861 PUTBACK;
2480 3862
2481 if (ix) 3863 if (ix)
2482 eval_sv (coderef, 0); 3864 eval_sv (coderef, 0);
2483 else 3865 else
2484 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3866 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2485 3867
2486 POPSTACK; 3868 POPSTACK;
2487 SPAGAIN; 3869 SPAGAIN;
2488 FREETMPS;
2489 LEAVE;
2490 PUTBACK;
2491 }
2492 3870
2493 if (!(coro->flags & CF_RUNNING)) 3871 if (current != coro)
2494 { 3872 {
3873 PUTBACK;
3874 slf_frame = slf_save;
2495 save_perl (aTHX_ coro); 3875 save_perl (aTHX_ coro);
2496 load_perl (aTHX_ &temp); 3876 load_perl (aTHX_ current);
2497 SPAGAIN; 3877 SPAGAIN;
2498 } 3878 }
2499 } 3879 }
2500} 3880}
2501 3881
… …
2504 PROTOTYPE: $ 3884 PROTOTYPE: $
2505 ALIAS: 3885 ALIAS:
2506 is_ready = CF_READY 3886 is_ready = CF_READY
2507 is_running = CF_RUNNING 3887 is_running = CF_RUNNING
2508 is_new = CF_NEW 3888 is_new = CF_NEW
2509 is_destroyed = CF_DESTROYED 3889 is_destroyed = CF_ZOMBIE
3890 is_zombie = CF_ZOMBIE
3891 is_suspended = CF_SUSPENDED
2510 CODE: 3892 CODE:
2511 RETVAL = boolSV (coro->flags & ix); 3893 RETVAL = boolSV (coro->flags & ix);
2512 OUTPUT: 3894 OUTPUT:
2513 RETVAL 3895 RETVAL
2514 3896
2515void 3897void
2516throw (Coro::State self, SV *throw = &PL_sv_undef) 3898throw (SV *self, SV *exception = &PL_sv_undef)
2517 PROTOTYPE: $;$ 3899 PROTOTYPE: $;$
2518 CODE: 3900 CODE:
2519{ 3901{
3902 struct coro *coro = SvSTATE (self);
2520 struct coro *current = SvSTATE_current; 3903 struct coro *current = SvSTATE_current;
2521 SV **throwp = self == current ? &coro_throw : &self->throw; 3904 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2522 SvREFCNT_dec (*throwp); 3905 SvREFCNT_dec (*exceptionp);
2523 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3906 SvGETMAGIC (exception);
3907 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3908
3909 api_ready (aTHX_ self);
2524} 3910}
2525 3911
2526void 3912void
2527api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3913api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2528 PROTOTYPE: $;$ 3914 PROTOTYPE: $;$
… …
2530 3916
2531SV * 3917SV *
2532has_cctx (Coro::State coro) 3918has_cctx (Coro::State coro)
2533 PROTOTYPE: $ 3919 PROTOTYPE: $
2534 CODE: 3920 CODE:
2535 RETVAL = boolSV (!!coro->cctx); 3921 /* maybe manage the running flag differently */
3922 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2536 OUTPUT: 3923 OUTPUT:
2537 RETVAL 3924 RETVAL
2538 3925
2539int 3926int
2540is_traced (Coro::State coro) 3927is_traced (Coro::State coro)
… …
2560 3947
2561void 3948void
2562force_cctx () 3949force_cctx ()
2563 PROTOTYPE: 3950 PROTOTYPE:
2564 CODE: 3951 CODE:
2565 SvSTATE_current->cctx->idle_sp = 0; 3952 cctx_current->idle_sp = 0;
2566 3953
2567void 3954void
2568swap_defsv (Coro::State self) 3955swap_defsv (Coro::State self)
2569 PROTOTYPE: $ 3956 PROTOTYPE: $
2570 ALIAS: 3957 ALIAS:
… …
2578 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3965 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2579 3966
2580 SV *tmp = *src; *src = *dst; *dst = tmp; 3967 SV *tmp = *src; *src = *dst; *dst = tmp;
2581 } 3968 }
2582 3969
3970void
3971cancel (Coro::State self)
3972 CODE:
3973 coro_state_destroy (aTHX_ self);
3974
3975SV *
3976enable_times (int enabled = enable_times)
3977 CODE:
3978{
3979 RETVAL = boolSV (enable_times);
3980
3981 if (enabled != enable_times)
3982 {
3983 enable_times = enabled;
3984
3985 coro_times_update ();
3986 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3987 }
3988}
3989 OUTPUT:
3990 RETVAL
3991
3992void
3993times (Coro::State self)
3994 PPCODE:
3995{
3996 struct coro *current = SvSTATE (coro_current);
3997
3998 if (ecb_expect_false (current == self))
3999 {
4000 coro_times_update ();
4001 coro_times_add (SvSTATE (coro_current));
4002 }
4003
4004 EXTEND (SP, 2);
4005 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
4006 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
4007
4008 if (ecb_expect_false (current == self))
4009 coro_times_sub (SvSTATE (coro_current));
4010}
4011
4012void
4013swap_sv (Coro::State coro, SV *sva, SV *svb)
4014 CODE:
4015{
4016 struct coro *current = SvSTATE_current;
4017 AV *swap_sv;
4018 int i;
4019
4020 sva = SvRV (sva);
4021 svb = SvRV (svb);
4022
4023 if (current == coro)
4024 SWAP_SVS_LEAVE (current);
4025
4026 if (!coro->swap_sv)
4027 coro->swap_sv = newAV ();
4028
4029 swap_sv = coro->swap_sv;
4030
4031 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
4032 {
4033 SV *a = AvARRAY (swap_sv)[i ];
4034 SV *b = AvARRAY (swap_sv)[i + 1];
4035
4036 if (a == sva && b == svb)
4037 {
4038 SvREFCNT_dec_NN (a);
4039 SvREFCNT_dec_NN (b);
4040
4041 for (; i <= AvFILLp (swap_sv) - 2; i++)
4042 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4043
4044 AvFILLp (swap_sv) -= 2;
4045
4046 goto removed;
4047 }
4048 }
4049
4050 av_push (swap_sv, SvREFCNT_inc_NN (sva));
4051 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4052
4053 removed:
4054
4055 if (current == coro)
4056 SWAP_SVS_ENTER (current);
4057}
4058
2583 4059
2584MODULE = Coro::State PACKAGE = Coro 4060MODULE = Coro::State PACKAGE = Coro
2585 4061
2586BOOT: 4062BOOT:
2587{ 4063{
2588 int i; 4064 if (SVt_LAST > 32)
4065 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2589 4066
2590 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2591 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4067 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2592 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4068 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2593 4069 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2594 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 4070 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2595 SvREADONLY_on (coro_current); 4071 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
4072 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
4073 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
4074 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
4075
4076 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
4077 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
4078 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
4079 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2596 4080
2597 coro_stash = gv_stashpv ("Coro", TRUE); 4081 coro_stash = gv_stashpv ("Coro", TRUE);
2598 4082
2599 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4083 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2600 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4084 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2601 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4085 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2602 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4086 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2603 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4087 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2604 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4088 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2605
2606 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2607 coro_ready[i] = newAV ();
2608 4089
2609 { 4090 {
2610 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4091 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2611 4092
2612 coroapi.schedule = api_schedule; 4093 coroapi.schedule = api_schedule;
4094 coroapi.schedule_to = api_schedule_to;
2613 coroapi.cede = api_cede; 4095 coroapi.cede = api_cede;
2614 coroapi.cede_notself = api_cede_notself; 4096 coroapi.cede_notself = api_cede_notself;
2615 coroapi.ready = api_ready; 4097 coroapi.ready = api_ready;
2616 coroapi.is_ready = api_is_ready; 4098 coroapi.is_ready = api_is_ready;
2617 coroapi.nready = coro_nready; 4099 coroapi.nready = coro_nready;
2618 coroapi.current = coro_current; 4100 coroapi.current = coro_current;
2619 4101
4102 coroapi.enterleave_hook = api_enterleave_hook;
4103 coroapi.enterleave_unhook = api_enterleave_unhook;
4104 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4105
2620 GCoroAPI = &coroapi; 4106 /*GCoroAPI = &coroapi;*/
2621 sv_setiv (sv, (IV)&coroapi); 4107 sv_setiv (sv, PTR2IV (&coroapi));
2622 SvREADONLY_on (sv); 4108 SvREADONLY_on (sv);
2623 } 4109 }
2624} 4110}
4111
4112SV *
4113async (...)
4114 PROTOTYPE: &@
4115 CODE:
4116 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4117 api_ready (aTHX_ RETVAL);
4118 OUTPUT:
4119 RETVAL
4120
4121void
4122_destroy (Coro::State coro)
4123 CODE:
4124 /* used by the manager thread */
4125 coro_state_destroy (aTHX_ coro);
4126
4127void
4128on_destroy (Coro::State coro, SV *cb)
4129 CODE:
4130 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4131
4132void
4133join (...)
4134 CODE:
4135 CORO_EXECUTE_SLF_XS (slf_init_join);
4136
4137void
4138terminate (...)
4139 CODE:
4140 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4141
4142void
4143cancel (...)
4144 CODE:
4145 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4146
4147int
4148safe_cancel (Coro::State self, ...)
4149 C_ARGS: aTHX_ self, &ST (1), items - 1
2625 4150
2626void 4151void
2627schedule (...) 4152schedule (...)
2628 CODE: 4153 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4154 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2630 4155
2631void 4156void
4157schedule_to (...)
4158 CODE:
4159 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4160
4161void
4162cede_to (...)
4163 CODE:
4164 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
4165
4166void
2632cede (...) 4167cede (...)
2633 CODE: 4168 CODE:
2634 CORO_EXECUTE_SLF_XS (slf_init_cede); 4169 CORO_EXECUTE_SLF_XS (slf_init_cede);
2635 4170
2636void 4171void
… …
2640 4175
2641void 4176void
2642_set_current (SV *current) 4177_set_current (SV *current)
2643 PROTOTYPE: $ 4178 PROTOTYPE: $
2644 CODE: 4179 CODE:
2645 SvREFCNT_dec (SvRV (coro_current)); 4180 SvREFCNT_dec_NN (SvRV (coro_current));
2646 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4181 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2647 4182
2648void 4183void
2649_set_readyhook (SV *hook) 4184_set_readyhook (SV *hook)
2650 PROTOTYPE: $ 4185 PROTOTYPE: $
2651 CODE: 4186 CODE:
2652 SvREFCNT_dec (coro_readyhook); 4187 SvREFCNT_dec (coro_readyhook);
4188 SvGETMAGIC (hook);
4189 if (SvOK (hook))
4190 {
2653 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4191 coro_readyhook = newSVsv (hook);
4192 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4193 }
4194 else
4195 {
4196 coro_readyhook = 0;
4197 CORO_READYHOOK = 0;
4198 }
2654 4199
2655int 4200int
2656prio (Coro::State coro, int newprio = 0) 4201prio (Coro::State coro, int newprio = 0)
2657 PROTOTYPE: $;$ 4202 PROTOTYPE: $;$
2658 ALIAS: 4203 ALIAS:
… …
2664 if (items > 1) 4209 if (items > 1)
2665 { 4210 {
2666 if (ix) 4211 if (ix)
2667 newprio = coro->prio - newprio; 4212 newprio = coro->prio - newprio;
2668 4213
2669 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4214 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2670 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4215 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2671 4216
2672 coro->prio = newprio; 4217 coro->prio = newprio;
2673 } 4218 }
2674} 4219}
2675 OUTPUT: 4220 OUTPUT:
… …
2689 CODE: 4234 CODE:
2690 RETVAL = coro_nready; 4235 RETVAL = coro_nready;
2691 OUTPUT: 4236 OUTPUT:
2692 RETVAL 4237 RETVAL
2693 4238
2694# for async_pool speedup
2695void 4239void
2696_pool_1 (SV *cb) 4240suspend (Coro::State self)
4241 PROTOTYPE: $
2697 CODE: 4242 CODE:
2698{ 4243 self->flags |= CF_SUSPENDED;
2699 HV *hv = (HV *)SvRV (coro_current);
2700 struct coro *coro = SvSTATE_hv ((SV *)hv);
2701 AV *defav = GvAV (PL_defgv);
2702 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2703 AV *invoke_av;
2704 int i, len;
2705 4244
2706 if (!invoke) 4245void
4246resume (Coro::State self)
4247 PROTOTYPE: $
4248 CODE:
4249 self->flags &= ~CF_SUSPENDED;
4250
4251void
4252_pool_handler (...)
4253 CODE:
4254 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4255
4256void
4257async_pool (SV *cv, ...)
4258 PROTOTYPE: &@
4259 PPCODE:
4260{
4261 HV *hv = (HV *)av_pop (av_async_pool);
4262 AV *av = newAV ();
4263 SV *cb = ST (0);
4264 int i;
4265
4266 av_extend (av, items - 2);
4267 for (i = 1; i < items; ++i)
4268 av_push (av, SvREFCNT_inc_NN (ST (i)));
4269
4270 if ((SV *)hv == &PL_sv_undef)
2707 { 4271 {
2708 SV *old = PL_diehook; 4272 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2709 PL_diehook = 0; 4273 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2710 SvREFCNT_dec (old); 4274 SvREFCNT_dec_NN (sv);
2711 croak ("\3async_pool terminate\2\n");
2712 } 4275 }
2713 4276
2714 SvREFCNT_dec (coro->saved_deffh);
2715 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2716
2717 hv_store (hv, "desc", sizeof ("desc") - 1,
2718 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2719
2720 invoke_av = (AV *)SvRV (invoke);
2721 len = av_len (invoke_av);
2722
2723 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2724
2725 if (len > 0)
2726 { 4277 {
2727 av_fill (defav, len - 1); 4278 struct coro *coro = SvSTATE_hv (hv);
2728 for (i = 0; i < len; ++i) 4279
2729 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4280 assert (!coro->invoke_cb);
4281 assert (!coro->invoke_av);
4282 coro->invoke_cb = SvREFCNT_inc (cb);
4283 coro->invoke_av = av;
2730 } 4284 }
4285
4286 api_ready (aTHX_ (SV *)hv);
4287
4288 if (GIMME_V != G_VOID)
4289 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4290 else
4291 SvREFCNT_dec_NN (hv);
2731} 4292}
4293
4294SV *
4295rouse_cb ()
4296 PROTOTYPE:
4297 CODE:
4298 RETVAL = coro_new_rouse_cb (aTHX);
4299 OUTPUT:
4300 RETVAL
2732 4301
2733void 4302void
2734_pool_2 (SV *cb) 4303rouse_wait (...)
4304 PROTOTYPE: ;$
4305 PPCODE:
4306 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4307
4308void
4309on_enter (SV *block)
4310 ALIAS:
4311 on_leave = 1
4312 PROTOTYPE: &
2735 CODE: 4313 CODE:
2736{ 4314{
2737 HV *hv = (HV *)SvRV (coro_current);
2738 struct coro *coro = SvSTATE_hv ((SV *)hv); 4315 struct coro *coro = SvSTATE_current;
4316 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2739 4317
2740 sv_setsv (cb, &PL_sv_undef); 4318 block = s_get_cv_croak (block);
2741 4319
2742 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4320 if (!*avp)
2743 coro->saved_deffh = 0; 4321 *avp = newAV ();
2744 4322
2745 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4323 av_push (*avp, SvREFCNT_inc (block));
2746 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2747 {
2748 SV *old = PL_diehook;
2749 PL_diehook = 0;
2750 SvREFCNT_dec (old);
2751 croak ("\3async_pool terminate\2\n");
2752 }
2753 4324
2754 av_clear (GvAV (PL_defgv)); 4325 if (!ix)
2755 hv_store (hv, "desc", sizeof ("desc") - 1, 4326 on_enterleave_call (aTHX_ block);
2756 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2757 4327
2758 coro->prio = 0; 4328 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2759 4329 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2760 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4330 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2761 api_trace (aTHX_ coro_current, 0);
2762
2763 av_push (av_async_pool, newSVsv (coro_current));
2764} 4331}
2765 4332
2766 4333
2767MODULE = Coro::State PACKAGE = PerlIO::cede 4334MODULE = Coro::State PACKAGE = PerlIO::cede
2768 4335
… …
2771 4338
2772 4339
2773MODULE = Coro::State PACKAGE = Coro::Semaphore 4340MODULE = Coro::State PACKAGE = Coro::Semaphore
2774 4341
2775SV * 4342SV *
2776new (SV *klass, SV *count_ = 0) 4343new (SV *klass, SV *count = 0)
2777 CODE: 4344 CODE:
2778{ 4345{
2779 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4346 int semcnt = 1;
2780 AV *av = newAV ();
2781 SV **ary;
2782 4347
2783 /* unfortunately, building manually saves memory */ 4348 if (count)
2784 Newx (ary, 2, SV *); 4349 {
2785 AvALLOC (av) = ary; 4350 SvGETMAGIC (count);
2786 AvARRAY (av) = ary;
2787 AvMAX (av) = 1;
2788 AvFILLp (av) = 0;
2789 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2790 4351
2791 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4352 if (SvOK (count))
4353 semcnt = SvIV (count);
4354 }
4355
4356 RETVAL = sv_bless (
4357 coro_waitarray_new (aTHX_ semcnt),
4358 GvSTASH (CvGV (cv))
4359 );
2792} 4360}
4361 OUTPUT:
4362 RETVAL
4363
4364# helper for Coro::Channel and others
4365SV *
4366_alloc (int count)
4367 CODE:
4368 RETVAL = coro_waitarray_new (aTHX_ count);
2793 OUTPUT: 4369 OUTPUT:
2794 RETVAL 4370 RETVAL
2795 4371
2796SV * 4372SV *
2797count (SV *self) 4373count (SV *self)
… …
2799 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4375 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2800 OUTPUT: 4376 OUTPUT:
2801 RETVAL 4377 RETVAL
2802 4378
2803void 4379void
2804up (SV *self, int adjust = 1) 4380up (SV *self)
2805 ALIAS:
2806 adjust = 1
2807 CODE: 4381 CODE:
2808 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4382 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
2809 4383
2810void 4384void
2811down (SV *self) 4385adjust (SV *self, int adjust)
4386 CODE:
4387 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4388
4389void
4390down (...)
2812 CODE: 4391 CODE:
2813 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4392 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4393
4394void
4395wait (...)
4396 CODE:
4397 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2814 4398
2815void 4399void
2816try (SV *self) 4400try (SV *self)
2817 PPCODE: 4401 PPCODE:
2818{ 4402{
… …
2830 XSRETURN_NO; 4414 XSRETURN_NO;
2831} 4415}
2832 4416
2833void 4417void
2834waiters (SV *self) 4418waiters (SV *self)
2835 CODE: 4419 PPCODE:
2836{ 4420{
2837 AV *av = (AV *)SvRV (self); 4421 AV *av = (AV *)SvRV (self);
4422 int wcount = AvFILLp (av) + 1 - 1;
2838 4423
2839 if (GIMME_V == G_SCALAR) 4424 if (GIMME_V == G_SCALAR)
2840 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4425 XPUSHs (sv_2mortal (newSViv (wcount)));
2841 else 4426 else
2842 { 4427 {
2843 int i; 4428 int i;
2844 EXTEND (SP, AvFILLp (av) + 1 - 1); 4429 EXTEND (SP, wcount);
2845 for (i = 1; i <= AvFILLp (av); ++i) 4430 for (i = 1; i <= wcount; ++i)
2846 PUSHs (newSVsv (AvARRAY (av)[i])); 4431 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2847 } 4432 }
2848} 4433}
4434
4435MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4436
4437void
4438_may_delete (SV *sem, int count, unsigned int extra_refs)
4439 PPCODE:
4440{
4441 AV *av = (AV *)SvRV (sem);
4442
4443 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4444 && AvFILLp (av) == 0 /* no waiters, just count */
4445 && SvIV (AvARRAY (av)[0]) == count)
4446 XSRETURN_YES;
4447
4448 XSRETURN_NO;
4449}
4450
4451MODULE = Coro::State PACKAGE = Coro::Signal
4452
4453SV *
4454new (SV *klass)
4455 CODE:
4456 RETVAL = sv_bless (
4457 coro_waitarray_new (aTHX_ 0),
4458 GvSTASH (CvGV (cv))
4459 );
4460 OUTPUT:
4461 RETVAL
4462
4463void
4464wait (...)
4465 CODE:
4466 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4467
4468void
4469broadcast (SV *self)
4470 CODE:
4471{
4472 AV *av = (AV *)SvRV (self);
4473 coro_signal_wake (aTHX_ av, AvFILLp (av));
4474}
4475
4476void
4477send (SV *self)
4478 CODE:
4479{
4480 AV *av = (AV *)SvRV (self);
4481
4482 if (AvFILLp (av))
4483 coro_signal_wake (aTHX_ av, 1);
4484 else
4485 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4486}
4487
4488IV
4489awaited (SV *self)
4490 CODE:
4491 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4492 OUTPUT:
4493 RETVAL
2849 4494
2850 4495
2851MODULE = Coro::State PACKAGE = Coro::AnyEvent 4496MODULE = Coro::State PACKAGE = Coro::AnyEvent
2852 4497
2853BOOT: 4498BOOT:
… …
2855 4500
2856void 4501void
2857_schedule (...) 4502_schedule (...)
2858 CODE: 4503 CODE:
2859{ 4504{
2860 static int incede; 4505 static int incede;
2861 4506
2862 api_cede_notself (aTHX); 4507 api_cede_notself (aTHX);
2863 4508
2864 ++incede; 4509 ++incede;
2865 while (coro_nready >= incede && api_cede (aTHX)) 4510 while (coro_nready >= incede && api_cede (aTHX))
… …
2868 sv_setsv (sv_activity, &PL_sv_undef); 4513 sv_setsv (sv_activity, &PL_sv_undef);
2869 if (coro_nready >= incede) 4514 if (coro_nready >= incede)
2870 { 4515 {
2871 PUSHMARK (SP); 4516 PUSHMARK (SP);
2872 PUTBACK; 4517 PUTBACK;
2873 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4518 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2874 SPAGAIN;
2875 } 4519 }
2876 4520
2877 --incede; 4521 --incede;
2878} 4522}
2879 4523
… …
2882 4526
2883void 4527void
2884_register (char *target, char *proto, SV *req) 4528_register (char *target, char *proto, SV *req)
2885 CODE: 4529 CODE:
2886{ 4530{
2887 HV *st; 4531 SV *req_cv = s_get_cv_croak (req);
2888 GV *gvp;
2889 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2890 /* newXSproto doesn't return the CV on 5.8 */ 4532 /* newXSproto doesn't return the CV on 5.8 */
2891 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4533 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2892 sv_setpv ((SV *)slf_cv, proto); 4534 sv_setpv ((SV *)slf_cv, proto);
2893 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4535 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2894} 4536}
2895 4537
4538MODULE = Coro::State PACKAGE = Coro::Select
4539
4540void
4541patch_pp_sselect ()
4542 CODE:
4543 if (!coro_old_pp_sselect)
4544 {
4545 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4546 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4547 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4548 }
4549
4550void
4551unpatch_pp_sselect ()
4552 CODE:
4553 if (coro_old_pp_sselect)
4554 {
4555 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4556 coro_old_pp_sselect = 0;
4557 }
4558
4559MODULE = Coro::State PACKAGE = Coro::Util
4560
4561void
4562_exit (int code)
4563 CODE:
4564 _exit (code);
4565
4566NV
4567time ()
4568 CODE:
4569 RETVAL = nvtime (aTHX);
4570 OUTPUT:
4571 RETVAL
4572
4573NV
4574gettimeofday ()
4575 PPCODE:
4576{
4577 UV tv [2];
4578 u2time (aTHX_ tv);
4579 EXTEND (SP, 2);
4580 PUSHs (sv_2mortal (newSVuv (tv [0])));
4581 PUSHs (sv_2mortal (newSVuv (tv [1])));
4582}
4583

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