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Comparing Coro/Coro/State.xs (file contents):
Revision 1.284 by root, Mon Nov 17 01:05:47 2008 UTC vs.
Revision 1.473 by root, Sun Sep 3 23:36:01 2017 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SvREFCNT_dec_NN
28 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
29#endif
30
31#ifndef SvREFCNT_inc_NN
32 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
33#endif
34
35#ifndef SVs_PADSTALE
36# define SVs_PADSTALE 0
37#endif
38
39#ifdef PadARRAY
40# define NEWPADAPI 1
41# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
42#else
43typedef AV PADNAMELIST;
44# if !PERL_VERSION_ATLEAST(5,8,0)
45typedef AV PADLIST;
46typedef AV PAD;
47# endif
48# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
49# define PadlistMAX(pl) AvFILLp (pl)
50# define PadlistNAMES(pl) (*PadlistARRAY (pl))
51# define PadARRAY AvARRAY
52# define PadMAX AvFILLp
53# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
54#endif
55#ifndef PadnamelistREFCNT
56# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
57#endif
58#ifndef PadnamelistREFCNT_dec
59# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
60#endif
61
62/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
63/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
64#if PERL_VERSION_ATLEAST(5,19,0)
65# define SVt_BIND SVt_IV
66#endif
67
68#if defined(_WIN32)
69# undef HAS_GETTIMEOFDAY
18# undef setjmp 70# undef setjmp
19# undef longjmp 71# undef longjmp
20# undef _exit 72# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 73# define setjmp _setjmp /* deep magic */
22#else 74#else
23# include <inttypes.h> /* most portable stdint.h */ 75# include <inttypes.h> /* most portable stdint.h */
24#endif 76#endif
25 77
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 78/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 79static int cctx_max_idle = 4;
55 80
56#define PERL_VERSION_ATLEAST(a,b,c) \ 81#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 82# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD
108#endif
109
110#ifndef CORO_STACKGUARD
111# define CORO_STACKGUARD 0
112#endif 83#endif
113 84
114/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 88#endif
118 89
119/* The next macros try to return the current stack pointer, in an as 90/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 91 * portable way as possible. */
121#if __GNUC__ >= 4 92#if __GNUC__ >= 4
93# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 94# define STACKLEVEL __builtin_frame_address (0)
123#else 95#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 96# define dSTACKLEVEL volatile void *stacklevel
97# define STACKLEVEL ((void *)&stacklevel)
125#endif 98#endif
126 99
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 100#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 101
144#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
145 104
146#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
147# if CORO_PTHREAD 106# if CORO_PTHREAD
148static void *coro_thx; 107static void *coro_thx;
149# endif 108# endif
150#endif 109#endif
151 110
152/* helper storage struct for Coro::AIO */ 111#ifdef __linux
153struct io_state 112# include <time.h> /* for timespec */
154{ 113# include <syscall.h> /* for SYS_* */
155 AV *res; 114# ifdef SYS_clock_gettime
156 int errorno; 115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 116# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 118# endif
160}; 119#endif
120
121/* one off bugfix for perl 5.22 */
122#if PERL_VERSION_ATLEAST(5,22,0) && !PERL_VERSION_ATLEAST(5,24,0)
123# undef PadlistNAMES
124# define PadlistNAMES(pl) *((PADNAMELIST **)PadlistARRAY (pl))
125#endif
126
127#if PERL_VERSION_ATLEAST(5,24,0)
128# define SUB_ARGARRAY PL_curpad[0]
129#else
130# define SUB_ARGARRAY (SV *)cx->blk_sub.argarray
131#endif
132
133/* perl usually suppresses asserts. for debugging, we sometimes force it to be on */
134#if 0
135# undef NDEBUG
136# include <assert.h>
137#endif
161 138
162static double (*nvtime)(); /* so why doesn't it take void? */ 139static double (*nvtime)(); /* so why doesn't it take void? */
140static void (*u2time)(pTHX_ UV ret[2]);
141
142/* we hijack an hopefully unused CV flag for our purposes */
143#define CVf_SLF 0x4000
144static OP *pp_slf (pTHX);
145static void slf_destroy (pTHX_ struct coro *coro);
163 146
164static U32 cctx_gen; 147static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 148static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 149static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 150static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 151static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 152static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 153static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 154
155static AV *av_destroy; /* destruction queue */
156static SV *sv_manager; /* the manager coro */
157static SV *sv_idle; /* $Coro::idle */
158
172static GV *irsgv; /* $/ */ 159static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 160static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 161static SV *rv_diehook;
175static SV *rv_warnhook; 162static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
177 163
178/* async_pool helper stuff */ 164/* async_pool helper stuff */
179static SV *sv_pool_rss; 165static SV *sv_pool_rss;
180static SV *sv_pool_size; 166static SV *sv_pool_size;
167static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 168static AV *av_async_pool; /* idle pool */
169static SV *sv_Coro; /* class string */
170static CV *cv_pool_handler;
182 171
183/* Coro::AnyEvent */ 172/* Coro::AnyEvent */
184static SV *sv_activity; 173static SV *sv_activity;
185 174
175/* enable processtime/realtime profiling */
176static char enable_times;
177typedef U32 coro_ts[2];
178static coro_ts time_real, time_cpu;
179static char times_valid;
180
186static struct coro_cctx *cctx_first; 181static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 182static int cctx_count, cctx_idle;
188 183
189enum { 184enum
185{
190 CC_MAPPED = 0x01, 186 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 187 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 188 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 189 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 190 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
199typedef struct coro_cctx 195typedef struct coro_cctx
200{ 196{
201 struct coro_cctx *next; 197 struct coro_cctx *next;
202 198
203 /* the stack */ 199 /* the stack */
204 void *sptr; 200 struct coro_stack stack;
205 size_t ssize;
206 201
207 /* cpu state */ 202 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 203 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
204#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 205 JMPENV *idle_te; /* same as idle_sp, but for top_env */
206#endif
210 JMPENV *top_env; 207 JMPENV *top_env;
211 coro_context cctx; 208 coro_context cctx;
212 209
213 U32 gen; 210 U32 gen;
214#if CORO_USE_VALGRIND 211#if CORO_USE_VALGRIND
215 int valgrind_id; 212 int valgrind_id;
216#endif 213#endif
217 unsigned char flags; 214 unsigned char flags;
218} coro_cctx; 215} coro_cctx;
219 216
217static coro_cctx *cctx_current; /* the currently running cctx */
218
219/*****************************************************************************/
220
221static MGVTBL coro_state_vtbl;
222
220enum { 223enum
224{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 225 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 226 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 227 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 228 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
229 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
230 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 231};
226 232
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 233/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 234typedef struct
229{ 235{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 236 #define VARx(name,expr,type) type name;
235# include "state.h" 237 #include "state.h"
236#undef VAR
237} perl_slots; 238} perl_slots;
238 239
240/* how many context stack entries do we need for perl_slots */
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 241#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 242
241/* this is a structure representing a perl-level coroutine */ 243/* this is a structure representing a perl-level coroutine */
242struct coro { 244struct coro
245{
243 /* the C coroutine allocated to this perl coroutine, if any */ 246 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 247 coro_cctx *cctx;
245 248
246 /* process data */ 249 /* ready queue */
250 struct coro *next_ready;
251
252 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 253 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 254 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 255 perl_slots *slot; /* basically the saved sp */
250 256
257 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 258 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 259 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 260 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 261
257 /* statistics */ 262 /* statistics */
258 int usecount; /* number of transfers to this coro */ 263 int usecount; /* number of transfers to this coro */
259 264
260 /* coro process data */ 265 /* coro process data */
261 int prio; 266 int prio;
262 SV *throw; /* exception to be thrown */ 267 SV *except; /* exception to be thrown */
268 SV *rouse_cb; /* last rouse callback */
269 AV *on_destroy; /* callbacks or coros to notify on destroy */
270 AV *status; /* the exit status list */
263 271
264 /* async_pool */ 272 /* async_pool */
265 SV *saved_deffh; 273 SV *saved_deffh;
274 SV *invoke_cb;
275 AV *invoke_av;
276
277 /* on_enter/on_leave */
278 AV *on_enter; AV *on_enter_xs;
279 AV *on_leave; AV *on_leave_xs;
280
281 /* swap_sv */
282 AV *swap_sv;
283
284 /* times */
285 coro_ts t_cpu, t_real;
266 286
267 /* linked list */ 287 /* linked list */
268 struct coro *next, *prev; 288 struct coro *next, *prev;
269}; 289};
270 290
271typedef struct coro *Coro__State; 291typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 292typedef struct coro *Coro__State_or_hashref;
273 293
294/* the following variables are effectively part of the perl context */
295/* and get copied between struct coro and these variables */
296/* the main reason we don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 297static struct CoroSLF slf_frame; /* the current slf frame */
275 298
276/** Coro ********************************************************************/ 299/** Coro ********************************************************************/
277 300
278#define PRIO_MAX 3 301#define CORO_PRIO_MAX 3
279#define PRIO_HIGH 1 302#define CORO_PRIO_HIGH 1
280#define PRIO_NORMAL 0 303#define CORO_PRIO_NORMAL 0
281#define PRIO_LOW -1 304#define CORO_PRIO_LOW -1
282#define PRIO_IDLE -3 305#define CORO_PRIO_IDLE -3
283#define PRIO_MIN -4 306#define CORO_PRIO_MIN -4
284 307
285/* for Coro.pm */ 308/* for Coro.pm */
286static SV *coro_current; 309static SV *coro_current;
287static SV *coro_readyhook; 310static SV *coro_readyhook;
288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 311static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
312static CV *cv_coro_run;
289static struct coro *coro_first; 313static struct coro *coro_first;
290#define coro_nready coroapi.nready 314#define coro_nready coroapi.nready
291 315
316/** JIT *********************************************************************/
317
318#if CORO_JIT
319 /* APPLE doesn't have mmap though */
320 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
321 #ifndef CORO_JIT_TYPE
322 #if ECB_AMD64 && CORO_JIT_UNIXY
323 #define CORO_JIT_TYPE "amd64-unix"
324 #elif __i386 && CORO_JIT_UNIXY
325 #define CORO_JIT_TYPE "x86-unix"
326 #endif
327 #endif
328#endif
329
330#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
331 #undef CORO_JIT
332#endif
333
334#if CORO_JIT
335 typedef void (*load_save_perl_slots_type)(perl_slots *);
336 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
337#endif
338
339/** Coro::Select ************************************************************/
340
341static OP *(*coro_old_pp_sselect) (pTHX);
342static SV *coro_select_select;
343
344/* horrible hack, but if it works... */
345static OP *
346coro_pp_sselect (pTHX)
347{
348 dSP;
349 PUSHMARK (SP - 4); /* fake argument list */
350 XPUSHs (coro_select_select);
351 PUTBACK;
352
353 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
354 PL_op->op_flags |= OPf_STACKED;
355 PL_op->op_private = 0;
356 return PL_ppaddr [OP_ENTERSUB](aTHX);
357}
358
359/** time stuff **************************************************************/
360
361#ifdef HAS_GETTIMEOFDAY
362
363ecb_inline void
364coro_u2time (pTHX_ UV ret[2])
365{
366 struct timeval tv;
367 gettimeofday (&tv, 0);
368
369 ret [0] = tv.tv_sec;
370 ret [1] = tv.tv_usec;
371}
372
373ecb_inline double
374coro_nvtime (void)
375{
376 struct timeval tv;
377 gettimeofday (&tv, 0);
378
379 return tv.tv_sec + tv.tv_usec * 1e-6;
380}
381
382ecb_inline void
383time_init (pTHX)
384{
385 nvtime = coro_nvtime;
386 u2time = coro_u2time;
387}
388
389#else
390
391ecb_inline void
392time_init (pTHX)
393{
394 SV **svp;
395
396 require_pv ("Time/HiRes.pm");
397
398 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
399
400 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
401 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
402
403 nvtime = INT2PTR (double (*)(), SvIV (*svp));
404
405 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
406 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
407}
408
409#endif
410
292/** lowlevel stuff **********************************************************/ 411/** lowlevel stuff **********************************************************/
293 412
294static SV * 413static SV * ecb_noinline
295coro_get_sv (pTHX_ const char *name, int create) 414coro_get_sv (pTHX_ const char *name, int create)
296{ 415{
297#if PERL_VERSION_ATLEAST (5,10,0) 416#if PERL_VERSION_ATLEAST (5,10,0)
298 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 417 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
299 get_sv (name, create); 418 get_sv (name, create);
300#endif 419#endif
301 return get_sv (name, create); 420 return get_sv (name, create);
302} 421}
303 422
304static AV * 423static AV * ecb_noinline
305coro_get_av (pTHX_ const char *name, int create) 424coro_get_av (pTHX_ const char *name, int create)
306{ 425{
307#if PERL_VERSION_ATLEAST (5,10,0) 426#if PERL_VERSION_ATLEAST (5,10,0)
308 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 427 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
309 get_av (name, create); 428 get_av (name, create);
310#endif 429#endif
311 return get_av (name, create); 430 return get_av (name, create);
312} 431}
313 432
314static HV * 433static HV * ecb_noinline
315coro_get_hv (pTHX_ const char *name, int create) 434coro_get_hv (pTHX_ const char *name, int create)
316{ 435{
317#if PERL_VERSION_ATLEAST (5,10,0) 436#if PERL_VERSION_ATLEAST (5,10,0)
318 /* 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 */
319 get_hv (name, create); 438 get_hv (name, create);
320#endif 439#endif
321 return get_hv (name, create); 440 return get_hv (name, create);
322} 441}
323 442
324static AV * 443ecb_inline void
444coro_times_update (void)
445{
446#ifdef coro_clock_gettime
447 struct timespec ts;
448
449 ts.tv_sec = ts.tv_nsec = 0;
450 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
451 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
452
453 ts.tv_sec = ts.tv_nsec = 0;
454 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
455 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
456#else
457 dTHX;
458 UV tv[2];
459
460 u2time (aTHX_ tv);
461 time_real [0] = tv [0];
462 time_real [1] = tv [1] * 1000;
463#endif
464}
465
466ecb_inline void
467coro_times_add (struct coro *c)
468{
469 c->t_real [1] += time_real [1];
470 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
471 c->t_real [0] += time_real [0];
472
473 c->t_cpu [1] += time_cpu [1];
474 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
475 c->t_cpu [0] += time_cpu [0];
476}
477
478ecb_inline void
479coro_times_sub (struct coro *c)
480{
481 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
482 c->t_real [1] -= time_real [1];
483 c->t_real [0] -= time_real [0];
484
485 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
486 c->t_cpu [1] -= time_cpu [1];
487 c->t_cpu [0] -= time_cpu [0];
488}
489
490/*****************************************************************************/
491/* magic glue */
492
493#define CORO_MAGIC_type_cv 26
494#define CORO_MAGIC_type_state PERL_MAGIC_ext
495
496#define CORO_MAGIC_NN(sv, type) \
497 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
498 ? SvMAGIC (sv) \
499 : mg_find (sv, type))
500
501#define CORO_MAGIC(sv, type) \
502 (ecb_expect_true (SvMAGIC (sv)) \
503 ? CORO_MAGIC_NN (sv, type) \
504 : 0)
505
506#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
507#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
508
509ecb_inline MAGIC *
510SvSTATEhv_p (pTHX_ SV *coro)
511{
512 MAGIC *mg;
513
514 if (ecb_expect_true (
515 SvTYPE (coro) == SVt_PVHV
516 && (mg = CORO_MAGIC_state (coro))
517 && mg->mg_virtual == &coro_state_vtbl
518 ))
519 return mg;
520
521 return 0;
522}
523
524ecb_inline struct coro *
525SvSTATE_ (pTHX_ SV *coro_sv)
526{
527 MAGIC *mg;
528
529 if (SvROK (coro_sv))
530 coro_sv = SvRV (coro_sv);
531
532 mg = SvSTATEhv_p (aTHX_ coro_sv);
533 if (!mg)
534 croak ("Coro::State object required");
535
536 return (struct coro *)mg->mg_ptr;
537}
538
539#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
540
541/* faster than SvSTATE, but expects a coroutine hv */
542#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
543#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
544
545/*****************************************************************************/
546/* padlist management and caching */
547
548ecb_inline PADLIST *
325coro_clone_padlist (pTHX_ CV *cv) 549coro_derive_padlist (pTHX_ CV *cv)
326{ 550{
327 AV *padlist = CvPADLIST (cv); 551 PADLIST *padlist = CvPADLIST (cv);
328 AV *newpadlist, *newpad; 552 PADLIST *newpadlist;
553 PADNAMELIST *padnames;
554 PAD *newpad;
555 PADOFFSET off = PadlistMAX (padlist) + 1;
329 556
330 newpadlist = newAV (); 557#if NEWPADAPI
558
559 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
560 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
561 while (!PadlistARRAY (padlist)[off - 1])
562 --off;
563
564 Perl_pad_push (aTHX_ padlist, off);
565
566 newpad = PadlistARRAY (padlist)[off];
567 PadlistARRAY (padlist)[off] = 0;
568
569#else
570
571#if PERL_VERSION_ATLEAST (5,10,0)
572 Perl_pad_push (aTHX_ padlist, off);
573#else
574 Perl_pad_push (aTHX_ padlist, off, 1);
575#endif
576
577 newpad = PadlistARRAY (padlist)[off];
578 PadlistMAX (padlist) = off - 1;
579
580#endif
581
582 newPADLIST (newpadlist);
583#if !PERL_VERSION_ATLEAST(5,15,3)
584 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
331 AvREAL_off (newpadlist); 585 AvREAL_off (newpadlist);
332#if PERL_VERSION_ATLEAST (5,10,0)
333 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
334#else
335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
336#endif 586#endif
337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
338 --AvFILLp (padlist);
339 587
340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 588 /* Already extended to 2 elements by newPADLIST. */
341 av_store (newpadlist, 1, (SV *)newpad); 589 PadlistMAX (newpadlist) = 1;
590
591 padnames = PadlistNAMES (padlist);
592 ++PadnamelistREFCNT (padnames);
593 PadlistNAMES (newpadlist) = padnames;
594
595 PadlistARRAY (newpadlist)[1] = newpad;
342 596
343 return newpadlist; 597 return newpadlist;
344} 598}
345 599
346static void 600ecb_inline void
347free_padlist (pTHX_ AV *padlist) 601free_padlist (pTHX_ PADLIST *padlist)
348{ 602{
349 /* may be during global destruction */ 603 /* may be during global destruction */
350 if (SvREFCNT (padlist)) 604 if (!IN_DESTRUCT)
351 { 605 {
352 I32 i = AvFILLp (padlist); 606 I32 i = PadlistMAX (padlist);
353 while (i >= 0) 607
608 while (i > 0) /* special-case index 0 */
354 { 609 {
355 SV **svp = av_fetch (padlist, i--, FALSE); 610 /* we try to be extra-careful here */
611 PAD *pad = PadlistARRAY (padlist)[i--];
612
356 if (svp) 613 if (pad)
357 { 614 {
358 SV *sv; 615 I32 j = PadMAX (pad);
359 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 616
617 while (j >= 0)
360 SvREFCNT_dec (sv); 618 SvREFCNT_dec (PadARRAY (pad)[j--]);
361 619
620 PadMAX (pad) = -1;
362 SvREFCNT_dec (*svp); 621 SvREFCNT_dec (pad);
363 } 622 }
364 } 623 }
365 624
625 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
626
627#if NEWPADAPI
628 Safefree (PadlistARRAY (padlist));
629 Safefree (padlist);
630#else
631 AvFILLp (padlist) = -1;
632 AvREAL_off (padlist);
366 SvREFCNT_dec ((SV*)padlist); 633 SvREFCNT_dec ((SV*)padlist);
634#endif
367 } 635 }
368} 636}
369 637
370static int 638static int
371coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 639coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
372{ 640{
373 AV *padlist; 641 PADLIST *padlist;
374 AV *av = (AV *)mg->mg_obj; 642 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
643 size_t len = *(size_t *)mg->mg_ptr;
375 644
376 /* casting is fun. */ 645 /* perl manages to free our internal AV and _then_ call us */
377 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 646 if (IN_DESTRUCT)
647 return 0;
648
649 while (len--)
378 free_padlist (aTHX_ padlist); 650 free_padlist (aTHX_ padlists[len]);
379
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381 651
382 return 0; 652 return 0;
383} 653}
384
385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
386#define CORO_MAGIC_type_state PERL_MAGIC_ext
387 654
388static MGVTBL coro_cv_vtbl = { 655static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0, 656 0, 0, 0, 0,
390 coro_cv_free 657 coro_cv_free
391}; 658};
392 659
393#define CORO_MAGIC(sv, type) \
394 expect_true (SvMAGIC (sv)) \
395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (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 (((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/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441
442/* the next two functions merely cache the padlists */ 660/* the next two functions merely cache the padlists */
443static void 661ecb_inline void
444get_padlist (pTHX_ CV *cv) 662get_padlist (pTHX_ CV *cv)
445{ 663{
446 MAGIC *mg = CORO_MAGIC_cv (cv); 664 MAGIC *mg = CORO_MAGIC_cv (cv);
447 AV *av; 665 size_t *lenp;
448 666
449 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 667 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
450 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 668 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
451 else 669 else
452 { 670 {
453#if CORO_PREFER_PERL_FUNCTIONS 671#if CORO_PREFER_PERL_FUNCTIONS
454 /* this is probably cleaner? but also slower! */ 672 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */ 673 /* in practise, it seems to be less stable */
456 CV *cp = Perl_cv_clone (cv); 674 CV *cp = Perl_cv_clone (aTHX_ cv);
457 CvPADLIST (cv) = CvPADLIST (cp); 675 CvPADLIST (cv) = CvPADLIST (cp);
458 CvPADLIST (cp) = 0; 676 CvPADLIST (cp) = 0;
459 SvREFCNT_dec (cp); 677 SvREFCNT_dec (cp);
460#else 678#else
461 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 679 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
462#endif 680#endif
463 } 681 }
464} 682}
465 683
466static void 684ecb_inline void
467put_padlist (pTHX_ CV *cv) 685put_padlist (pTHX_ CV *cv)
468{ 686{
469 MAGIC *mg = CORO_MAGIC_cv (cv); 687 MAGIC *mg = CORO_MAGIC_cv (cv);
470 AV *av;
471 688
472 if (expect_false (!mg)) 689 if (ecb_expect_false (!mg))
690 {
473 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 691 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
692 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
693 mg->mg_len = 1; /* so mg_free frees mg_ptr */
694 }
695 else
696 Renew (mg->mg_ptr,
697 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
698 char);
474 699
475 av = (AV *)mg->mg_obj; 700 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
476
477 if (expect_false (AvFILLp (av) >= AvMAX (av)))
478 av_extend (av, AvMAX (av) + 1);
479
480 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
481} 701}
482 702
483/** load & save, init *******************************************************/ 703/** load & save, init *******************************************************/
704
705ecb_inline void
706swap_sv (SV *a, SV *b)
707{
708 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
709 SV tmp;
710
711 /* swap sv_any */
712 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
713
714 /* swap sv_flags */
715 SvFLAGS (&tmp) = SvFLAGS (a);
716 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
717 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
718
719#if PERL_VERSION_ATLEAST (5,10,0)
720 /* perl 5.10 and later complicates this _quite_ a bit, but it also
721 * is much faster, so no quarrels here. alternatively, we could
722 * sv_upgrade to avoid this.
723 */
724 {
725 /* swap sv_u */
726 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
727
728 /* if SvANY points to the head, we need to adjust the pointers,
729 * as the pointer for a still points to b, and maybe vice versa.
730 */
731 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
732 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
733 svany_in_head_set |= 1 << SVt_NV;
734 #endif
735
736 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
737
738 if (svany_in_head (SvTYPE (a)))
739 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
740
741 if (svany_in_head (SvTYPE (b)))
742 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
743 }
744#endif
745}
746
747/* swap sv heads, at least logically */
748static void
749swap_svs_enter (pTHX_ Coro__State c)
750{
751 int i;
752
753 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
754 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
755}
756
757static void
758swap_svs_leave (pTHX_ Coro__State c)
759{
760 int i;
761
762 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
763 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
764}
765
766#define SWAP_SVS_ENTER(coro) \
767 if (ecb_expect_false ((coro)->swap_sv)) \
768 swap_svs_enter (aTHX_ (coro))
769
770#define SWAP_SVS_LEAVE(coro) \
771 if (ecb_expect_false ((coro)->swap_sv)) \
772 swap_svs_leave (aTHX_ (coro))
773
774static void
775on_enterleave_call (pTHX_ SV *cb);
484 776
485static void 777static void
486load_perl (pTHX_ Coro__State c) 778load_perl (pTHX_ Coro__State c)
487{ 779{
488 perl_slots *slot = c->slot; 780 perl_slots *slot = c->slot;
489 c->slot = 0; 781 c->slot = 0;
490 782
491 PL_mainstack = c->mainstack; 783 PL_mainstack = c->mainstack;
492 784
493 GvSV (PL_defgv) = slot->defsv; 785#if CORO_JIT
494 GvAV (PL_defgv) = slot->defav; 786 load_perl_slots (slot);
495 GvSV (PL_errgv) = slot->errsv; 787#else
496 GvSV (irsgv) = slot->irsgv;
497
498 #define VAR(name,type) PL_ ## name = slot->name; 788 #define VARx(name,expr,type) expr = slot->name;
499 # include "state.h" 789 #include "state.h"
500 #undef VAR 790#endif
501 791
502 { 792 {
503 dSP; 793 dSP;
504 794
505 CV *cv; 795 CV *cv;
506 796
507 /* now do the ugly restore mess */ 797 /* now do the ugly restore mess */
508 while (expect_true (cv = (CV *)POPs)) 798 while (ecb_expect_true (cv = (CV *)POPs))
509 { 799 {
510 put_padlist (aTHX_ cv); /* mark this padlist as available */ 800 put_padlist (aTHX_ cv); /* mark this padlist as available */
511 CvDEPTH (cv) = PTR2IV (POPs); 801 CvDEPTH (cv) = PTR2IV (POPs);
512 CvPADLIST (cv) = (AV *)POPs; 802 CvPADLIST (cv) = (PADLIST *)POPs;
513 } 803 }
514 804
515 PUTBACK; 805 PUTBACK;
516 } 806 }
517 807
518 slf_frame = c->slf_frame; 808 slf_frame = c->slf_frame;
809 CORO_THROW = c->except;
810
811 if (ecb_expect_false (enable_times))
812 {
813 if (ecb_expect_false (!times_valid))
814 coro_times_update ();
815
816 coro_times_sub (c);
817 }
818
819 if (ecb_expect_false (c->on_enter))
820 {
821 int i;
822
823 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
824 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
825 }
826
827 if (ecb_expect_false (c->on_enter_xs))
828 {
829 int i;
830
831 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
832 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
833 }
834
835 SWAP_SVS_ENTER (c);
519} 836}
520 837
521static void 838static void
522save_perl (pTHX_ Coro__State c) 839save_perl (pTHX_ Coro__State c)
523{ 840{
841 SWAP_SVS_LEAVE (c);
842
843 if (ecb_expect_false (c->on_leave_xs))
844 {
845 int i;
846
847 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
848 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
849 }
850
851 if (ecb_expect_false (c->on_leave))
852 {
853 int i;
854
855 for (i = AvFILLp (c->on_leave); i >= 0; --i)
856 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
857 }
858
859 times_valid = 0;
860
861 if (ecb_expect_false (enable_times))
862 {
863 coro_times_update (); times_valid = 1;
864 coro_times_add (c);
865 }
866
867 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 868 c->slf_frame = slf_frame;
525 869
526 { 870 {
527 dSP; 871 dSP;
528 I32 cxix = cxstack_ix; 872 I32 cxix = cxstack_ix;
… …
536 880
537 XPUSHs (Nullsv); 881 XPUSHs (Nullsv);
538 /* this loop was inspired by pp_caller */ 882 /* this loop was inspired by pp_caller */
539 for (;;) 883 for (;;)
540 { 884 {
541 while (expect_true (cxix >= 0)) 885 while (ecb_expect_true (cxix >= 0))
542 { 886 {
543 PERL_CONTEXT *cx = &ccstk[cxix--]; 887 PERL_CONTEXT *cx = &ccstk[cxix--];
544 888
545 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 889 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
546 { 890 {
547 CV *cv = cx->blk_sub.cv; 891 CV *cv = cx->blk_sub.cv;
548 892
549 if (expect_true (CvDEPTH (cv))) 893 if (ecb_expect_true (CvDEPTH (cv)))
550 { 894 {
551 EXTEND (SP, 3); 895 EXTEND (SP, 3);
552 PUSHs ((SV *)CvPADLIST (cv)); 896 PUSHs ((SV *)CvPADLIST (cv));
553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 897 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
554 PUSHs ((SV *)cv); 898 PUSHs ((SV *)cv);
… …
557 get_padlist (aTHX_ cv); 901 get_padlist (aTHX_ cv);
558 } 902 }
559 } 903 }
560 } 904 }
561 905
562 if (expect_true (top_si->si_type == PERLSI_MAIN)) 906 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
563 break; 907 break;
564 908
565 top_si = top_si->si_prev; 909 top_si = top_si->si_prev;
566 ccstk = top_si->si_cxstack; 910 ccstk = top_si->si_cxstack;
567 cxix = top_si->si_cxix; 911 cxix = top_si->si_cxix;
… …
569 913
570 PUTBACK; 914 PUTBACK;
571 } 915 }
572 916
573 /* allocate some space on the context stack for our purposes */ 917 /* allocate some space on the context stack for our purposes */
574 /* we manually unroll here, as usually 2 slots is enough */ 918 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
575 if (SLOT_COUNT >= 1) CXINC;
576 if (SLOT_COUNT >= 2) CXINC;
577 if (SLOT_COUNT >= 3) CXINC;
578 { 919 {
579 int i; 920 unsigned int i;
921
580 for (i = 3; i < SLOT_COUNT; ++i) 922 for (i = 0; i < SLOT_COUNT; ++i)
581 CXINC; 923 CXINC;
582 } 924
583 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 925 cxstack_ix -= SLOT_COUNT; /* undo allocation */
926 }
584 927
585 c->mainstack = PL_mainstack; 928 c->mainstack = PL_mainstack;
586 929
587 { 930 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 931 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589 932
590 slot->defav = GvAV (PL_defgv); 933#if CORO_JIT
591 slot->defsv = DEFSV; 934 save_perl_slots (slot);
592 slot->errsv = ERRSV; 935#else
593 slot->irsgv = GvSV (irsgv);
594
595 #define VAR(name,type) slot->name = PL_ ## name; 936 #define VARx(name,expr,type) slot->name = expr;
596 # include "state.h" 937 #include "state.h"
597 #undef VAR 938#endif
598 } 939 }
599} 940}
600 941
601/* 942/*
602 * allocate various perl stacks. This is almost an exact copy 943 * allocate various perl stacks. This is almost an exact copy
603 * of perl.c:init_stacks, except that it uses less memory 944 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 945 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 946 * not usually need a lot of stackspace.
606 */ 947 */
607#if CORO_PREFER_PERL_FUNCTIONS 948#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 949# define coro_init_stacks(thx) init_stacks ()
609#else 950#else
610static void 951static void
611coro_init_stacks (pTHX) 952coro_init_stacks (pTHX)
612{ 953{
613 PL_curstackinfo = new_stackinfo(32, 8); 954 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
614 PL_curstackinfo->si_type = PERLSI_MAIN; 955 PL_curstackinfo->si_type = PERLSI_MAIN;
615 PL_curstack = PL_curstackinfo->si_stack; 956 PL_curstack = PL_curstackinfo->si_stack;
616 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 957 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
617 958
618 PL_stack_base = AvARRAY(PL_curstack); 959 PL_stack_base = AvARRAY(PL_curstack);
… …
633#endif 974#endif
634 975
635 New(54,PL_scopestack,8,I32); 976 New(54,PL_scopestack,8,I32);
636 PL_scopestack_ix = 0; 977 PL_scopestack_ix = 0;
637 PL_scopestack_max = 8; 978 PL_scopestack_max = 8;
979#if HAS_SCOPESTACK_NAME
980 New(54,PL_scopestack_name,8,const char*);
981#endif
638 982
639 New(54,PL_savestack,24,ANY); 983 New(54,PL_savestack,24,ANY);
640 PL_savestack_ix = 0; 984 PL_savestack_ix = 0;
641 PL_savestack_max = 24; 985 PL_savestack_max = 24;
986#if PERL_VERSION_ATLEAST (5,24,0)
987 /* perl 5.24 moves SS_MAXPUSH optimisation from */
988 /* the header macros to PL_savestack_max */
989 PL_savestack_max -= SS_MAXPUSH;
990#endif
642 991
643#if !PERL_VERSION_ATLEAST (5,10,0) 992#if !PERL_VERSION_ATLEAST (5,10,0)
644 New(54,PL_retstack,4,OP*); 993 New(54,PL_retstack,4,OP*);
645 PL_retstack_ix = 0; 994 PL_retstack_ix = 0;
646 PL_retstack_max = 4; 995 PL_retstack_max = 4;
… …
670 } 1019 }
671 1020
672 Safefree (PL_tmps_stack); 1021 Safefree (PL_tmps_stack);
673 Safefree (PL_markstack); 1022 Safefree (PL_markstack);
674 Safefree (PL_scopestack); 1023 Safefree (PL_scopestack);
1024#if HAS_SCOPESTACK_NAME
1025 Safefree (PL_scopestack_name);
1026#endif
675 Safefree (PL_savestack); 1027 Safefree (PL_savestack);
676#if !PERL_VERSION_ATLEAST (5,10,0) 1028#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 1029 Safefree (PL_retstack);
678#endif 1030#endif
679} 1031}
680 1032
1033#define CORO_RSS \
1034 rss += sizeof (SYM (curstackinfo)); \
1035 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
1036 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
1037 rss += SYM (tmps_max) * sizeof (SV *); \
1038 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
1039 rss += SYM (scopestack_max) * sizeof (I32); \
1040 rss += SYM (savestack_max) * sizeof (ANY);
1041
681static size_t 1042static size_t
682coro_rss (pTHX_ struct coro *coro) 1043coro_rss (pTHX_ struct coro *coro)
683{ 1044{
684 size_t rss = sizeof (*coro); 1045 size_t rss = sizeof (*coro);
685 1046
686 if (coro->mainstack) 1047 if (coro->mainstack)
687 { 1048 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 1049 if (coro->flags & CF_RUNNING)
692 { 1050 {
693 slot = &tmp_slot; 1051 #define SYM(sym) PL_ ## sym
694 1052 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 1053 #undef SYM
698 } 1054 }
699 else 1055 else
700 slot = coro->slot;
701
702 if (slot)
703 { 1056 {
704 rss += sizeof (slot->curstackinfo); 1057 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1058 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1059 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 1060 }
716 } 1061 }
717 1062
718 return rss; 1063 return rss;
719} 1064}
720 1065
721/** coroutine stack handling ************************************************/ 1066/** provide custom get/set/clear methods for %SIG elements ******************/
722
723static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
724static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
726 1067
727/* apparently < 5.8.8 */ 1068/* apparently < 5.8.8 */
728#ifndef MgPV_nolen_const 1069#ifndef MgPV_nolen_const
729#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1070#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
730 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1071 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
731 (const char*)(mg)->mg_ptr) 1072 (const char*)(mg)->mg_ptr)
732#endif 1073#endif
733 1074
1075/* this will be a patched copy of PL_vtbl_sigelem */
1076static MGVTBL coro_sigelem_vtbl;
1077
1078static int ecb_cold
1079coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
1080{
1081 char *key = SvPV_nolen ((SV *)name);
1082
1083 /* do what mg_copy normally does */
1084 sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
1085 assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
1086
1087 /* patch sigelem vtbl, but only for __WARN__ and __DIE__ */
1088 if (*key == '_'
1089 && (strEQ (key, "__DIE__")
1090 || strEQ (key, "__WARN__")))
1091 mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
1092
1093 return 1;
1094}
1095
1096/* perl does not have a %SIG vtbl, we provide one so we can override */
1097/* the magic vtbl for the __DIE__ and __WARN__ members */
1098static const MGVTBL coro_sig_vtbl = {
1099 0, 0, 0, 0, 0,
1100 coro_sig_copy
1101};
1102
734/* 1103/*
735 * This overrides the default magic get method of %SIG elements. 1104 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1105 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 1106 * and instead of trying to save and restore the hash elements (extremely slow),
738 * readback here. 1107 * we just provide our own readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */ 1108 */
743static int 1109static int ecb_cold
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1110coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{ 1111{
746 const char *s = MgPV_nolen_const (mg); 1112 const char *s = MgPV_nolen_const (mg);
1113 /* the key must be either __DIE__ or __WARN__ here */
1114 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
747 1115
748 if (*s == '_') 1116 SV *ssv;
749 {
750 SV **svp = 0;
751 1117
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754
755 if (svp) 1118 if (!*svp)
756 { 1119 ssv = &PL_sv_undef;
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1120 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
758 return 0; 1121 ssv = sv_2mortal (newRV_inc (*svp));
759 } 1122 else
760 } 1123 ssv = *svp;
761 1124
762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1125 sv_setsv (sv, ssv);
1126 return 0;
763} 1127}
764 1128
765static int 1129static int ecb_cold
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1130coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{ 1131{
768 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;
769 1135
770 if (*s == '_')
771 {
772 SV **svp = 0;
773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 SV *old = *svp; 1136 SV *old = *svp;
780 *svp = 0; 1137 *svp = 0;
781 SvREFCNT_dec (old); 1138 SvREFCNT_dec (old);
782 return 0; 1139 return 0;
783 }
784 }
785
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
787} 1140}
788 1141
789static int 1142static int ecb_cold
790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1143coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
791{ 1144{
792 const char *s = MgPV_nolen_const (mg); 1145 const char *s = MgPV_nolen_const (mg);
1146 /* the key must be either __DIE__ or __WARN__ here */
1147 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
793 1148
794 if (*s == '_')
795 {
796 SV **svp = 0;
797
798 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800
801 if (svp)
802 {
803 SV *old = *svp; 1149 SV *old = *svp;
804 *svp = newSVsv (sv); 1150 *svp = SvOK (sv) ? newSVsv (sv) : 0;
805 SvREFCNT_dec (old); 1151 SvREFCNT_dec (old);
806 return 0; 1152 return 0;
807 }
808 }
809
810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
811} 1153}
812 1154
813static void 1155static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta) 1156prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{ 1157{
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 1163slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 1164{
823 return 0; 1165 return 0;
824} 1166}
825 1167
826static void 1168static int
1169slf_check_repeat (pTHX_ struct CoroSLF *frame)
1170{
1171 return 1;
1172}
1173
1174/** coroutine stack handling ************************************************/
1175
1176static UNOP init_perl_op;
1177
1178ecb_noinline static void /* noinline to keep it out of the transfer fast path */
827coro_setup (pTHX_ struct coro *coro) 1179init_perl (pTHX_ struct coro *coro)
828{ 1180{
829 /* 1181 /*
830 * emulate part of the perl startup here. 1182 * emulate part of the perl startup here.
831 */ 1183 */
832 coro_init_stacks (aTHX); 1184 coro_init_stacks (aTHX);
833 1185
834 PL_runops = RUNOPS_DEFAULT; 1186 PL_runops = RUNOPS_DEFAULT;
835 PL_curcop = &PL_compiling; 1187 PL_curcop = &PL_compiling;
836 PL_in_eval = EVAL_NULL; 1188 PL_in_eval = EVAL_NULL;
837 PL_comppad = 0; 1189 PL_comppad = 0;
1190 PL_comppad_name = 0;
1191 PL_comppad_name_fill = 0;
1192 PL_comppad_name_floor = 0;
838 PL_curpm = 0; 1193 PL_curpm = 0;
839 PL_curpad = 0; 1194 PL_curpad = 0;
840 PL_localizing = 0; 1195 PL_localizing = 0;
841 PL_dirty = 0;
842 PL_restartop = 0; 1196 PL_restartop = 0;
843#if PERL_VERSION_ATLEAST (5,10,0) 1197#if PERL_VERSION_ATLEAST (5,10,0)
844 PL_parser = 0; 1198 PL_parser = 0;
845#endif 1199#endif
1200 PL_hints = 0;
846 1201
847 /* recreate the die/warn hooks */ 1202 /* recreate the die/warn hooks */
848 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1203 PL_diehook = SvREFCNT_inc (rv_diehook);
849 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1204 PL_warnhook = SvREFCNT_inc (rv_warnhook);
850 1205
851 GvSV (PL_defgv) = newSV (0); 1206 GvSV (PL_defgv) = newSV (0);
852 GvAV (PL_defgv) = coro->args; coro->args = 0; 1207 GvAV (PL_defgv) = coro->args; coro->args = 0;
853 GvSV (PL_errgv) = newSV (0); 1208 GvSV (PL_errgv) = newSV (0);
854 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1209 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1210 GvHV (PL_hintgv) = newHV ();
1211#if PERL_VERSION_ATLEAST (5,10,0)
1212 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1213#endif
855 PL_rs = newSVsv (GvSV (irsgv)); 1214 PL_rs = newSVsv (GvSV (irsgv));
856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1215 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
857 1216
858 { 1217 {
859 dSP; 1218 dSP;
860 UNOP myop; 1219 UNOP myop;
861 1220
862 Zero (&myop, 1, UNOP); 1221 Zero (&myop, 1, UNOP);
863 myop.op_next = Nullop; 1222 myop.op_next = Nullop;
1223 myop.op_type = OP_ENTERSUB;
864 myop.op_flags = OPf_WANT_VOID; 1224 myop.op_flags = OPf_WANT_VOID;
865 1225
866 PUSHMARK (SP); 1226 PUSHMARK (SP);
867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1227 XPUSHs ((SV *)coro->startcv);
868 PUTBACK; 1228 PUTBACK;
869 PL_op = (OP *)&myop; 1229 PL_op = (OP *)&myop;
870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1230 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871 SPAGAIN;
872 } 1231 }
873 1232
874 /* this newly created coroutine might be run on an existing cctx which most 1233 /* this newly created coroutine might be run on an existing cctx which most
875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1234 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876 */ 1235 */
877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1236 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1237 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
879} 1238 slf_frame.destroy = 0;
880 1239
1240 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1241 init_perl_op.op_next = PL_op;
1242 init_perl_op.op_type = OP_ENTERSUB;
1243 init_perl_op.op_ppaddr = pp_slf;
1244 /* no flags etc. required, as an init function won't be called */
1245
1246 PL_op = (OP *)&init_perl_op;
1247
1248 /* copy throw, in case it was set before init_perl */
1249 CORO_THROW = coro->except;
1250
1251 SWAP_SVS_ENTER (coro);
1252
1253 if (ecb_expect_false (enable_times))
1254 {
1255 coro_times_update ();
1256 coro_times_sub (coro);
1257 }
1258}
1259
881static void 1260static void
882coro_destruct (pTHX_ struct coro *coro) 1261coro_unwind_stacks (pTHX)
883{ 1262{
884 if (!IN_DESTRUCT) 1263 if (!IN_DESTRUCT)
885 { 1264 {
886 /* restore all saved variables and stuff */ 1265 /* restore all saved variables and stuff */
887 LEAVE_SCOPE (0); 1266 LEAVE_SCOPE (0);
… …
895 POPSTACK_TO (PL_mainstack); 1274 POPSTACK_TO (PL_mainstack);
896 1275
897 /* unwind main stack */ 1276 /* unwind main stack */
898 dounwind (-1); 1277 dounwind (-1);
899 } 1278 }
1279}
900 1280
901 SvREFCNT_dec (GvSV (PL_defgv)); 1281static void
902 SvREFCNT_dec (GvAV (PL_defgv)); 1282destroy_perl (pTHX_ struct coro *coro)
903 SvREFCNT_dec (GvSV (PL_errgv)); 1283{
904 SvREFCNT_dec (PL_defoutgv); 1284 SV *svf [9];
905 SvREFCNT_dec (PL_rs);
906 SvREFCNT_dec (GvSV (irsgv));
907 1285
908 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook);
910 1286 {
1287 SV *old_current = SvRV (coro_current);
1288 struct coro *current = SvSTATE (old_current);
1289
1290 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1291
1292 save_perl (aTHX_ current);
1293
1294 /* this will cause transfer_check to croak on block*/
1295 SvRV_set (coro_current, (SV *)coro->hv);
1296
1297 load_perl (aTHX_ coro);
1298
1299 /* restore swapped sv's */
1300 SWAP_SVS_LEAVE (coro);
1301
1302 coro_unwind_stacks (aTHX);
1303
1304 coro_destruct_stacks (aTHX);
1305
1306 /* now save some sv's to be free'd later */
1307 svf [0] = GvSV (PL_defgv);
1308 svf [1] = (SV *)GvAV (PL_defgv);
1309 svf [2] = GvSV (PL_errgv);
1310 svf [3] = (SV *)PL_defoutgv;
1311 svf [4] = PL_rs;
1312 svf [5] = GvSV (irsgv);
1313 svf [6] = (SV *)GvHV (PL_hintgv);
1314 svf [7] = PL_diehook;
1315 svf [8] = PL_warnhook;
1316 assert (9 == sizeof (svf) / sizeof (*svf));
1317
1318 SvRV_set (coro_current, old_current);
1319
1320 load_perl (aTHX_ current);
1321 }
1322
1323 {
1324 unsigned int i;
1325
1326 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1327 SvREFCNT_dec (svf [i]);
1328
911 SvREFCNT_dec (coro->saved_deffh); 1329 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw); 1330 SvREFCNT_dec (coro->rouse_cb);
913 1331 SvREFCNT_dec (coro->invoke_cb);
914 coro_destruct_stacks (aTHX); 1332 SvREFCNT_dec (coro->invoke_av);
1333 SvREFCNT_dec (coro->on_enter_xs);
1334 SvREFCNT_dec (coro->on_leave_xs);
1335 }
915} 1336}
916 1337
917INLINE void 1338ecb_inline void
918free_coro_mortal (pTHX) 1339free_coro_mortal (pTHX)
919{ 1340{
920 if (expect_true (coro_mortal)) 1341 if (ecb_expect_true (coro_mortal))
921 { 1342 {
922 SvREFCNT_dec (coro_mortal); 1343 SvREFCNT_dec ((SV *)coro_mortal);
923 coro_mortal = 0; 1344 coro_mortal = 0;
924 } 1345 }
925} 1346}
926 1347
927static int 1348static int
928runops_trace (pTHX) 1349runops_trace (pTHX)
929{ 1350{
930 COP *oldcop = 0; 1351 COP *oldcop = 0;
931 int oldcxix = -2; 1352 int oldcxix = -2;
932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
933 coro_cctx *cctx = coro->cctx;
934 1353
935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1354 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
936 { 1355 {
937 PERL_ASYNC_CHECK (); 1356 PERL_ASYNC_CHECK ();
938 1357
939 if (cctx->flags & CC_TRACE_ALL) 1358 if (cctx_current->flags & CC_TRACE_ALL)
940 { 1359 {
941 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1360 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
942 { 1361 {
943 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1362 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
944 SV **bot, **top; 1363 SV **bot, **top;
945 AV *av = newAV (); /* return values */ 1364 AV *av = newAV (); /* return values */
946 SV **cb; 1365 SV **cb;
… …
961 av_push (av, SvREFCNT_inc_NN (*bot++)); 1380 av_push (av, SvREFCNT_inc_NN (*bot++));
962 1381
963 PL_runops = RUNOPS_DEFAULT; 1382 PL_runops = RUNOPS_DEFAULT;
964 ENTER; 1383 ENTER;
965 SAVETMPS; 1384 SAVETMPS;
1385 PUSHMARK (SP);
966 EXTEND (SP, 3); 1386 EXTEND (SP, 3);
967 PUSHMARK (SP);
968 PUSHs (&PL_sv_no); 1387 PUSHs (&PL_sv_no);
969 PUSHs (fullname); 1388 PUSHs (fullname);
970 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 1389 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
971 PUTBACK; 1390 PUTBACK;
972 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1391 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
… …
983 1402
984 if (PL_curcop != &PL_compiling) 1403 if (PL_curcop != &PL_compiling)
985 { 1404 {
986 SV **cb; 1405 SV **cb;
987 1406
988 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1407 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
989 { 1408 {
990 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1409 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
991 1410
992 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1411 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
993 { 1412 {
994 runops_proc_t old_runops = PL_runops;
995 dSP; 1413 dSP;
996 GV *gv = CvGV (cx->blk_sub.cv); 1414 GV *gv = CvGV (cx->blk_sub.cv);
997 SV *fullname = sv_2mortal (newSV (0)); 1415 SV *fullname = sv_2mortal (newSV (0));
998 1416
999 if (isGV (gv)) 1417 if (isGV (gv))
1000 gv_efullname3 (fullname, gv, 0); 1418 gv_efullname3 (fullname, gv, 0);
1001 1419
1002 PL_runops = RUNOPS_DEFAULT; 1420 PL_runops = RUNOPS_DEFAULT;
1003 ENTER; 1421 ENTER;
1004 SAVETMPS; 1422 SAVETMPS;
1423 PUSHMARK (SP);
1005 EXTEND (SP, 3); 1424 EXTEND (SP, 3);
1006 PUSHMARK (SP);
1007 PUSHs (&PL_sv_yes); 1425 PUSHs (&PL_sv_yes);
1008 PUSHs (fullname); 1426 PUSHs (fullname);
1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1427 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc (SUB_ARGARRAY)) : &PL_sv_undef);
1010 PUTBACK; 1428 PUTBACK;
1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1429 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1430 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013 SPAGAIN; 1431 SPAGAIN;
1014 FREETMPS; 1432 FREETMPS;
… …
1017 } 1435 }
1018 1436
1019 oldcxix = cxstack_ix; 1437 oldcxix = cxstack_ix;
1020 } 1438 }
1021 1439
1022 if (cctx->flags & CC_TRACE_LINE) 1440 if (cctx_current->flags & CC_TRACE_LINE)
1023 { 1441 {
1024 dSP; 1442 dSP;
1025 1443
1026 PL_runops = RUNOPS_DEFAULT; 1444 PL_runops = RUNOPS_DEFAULT;
1027 ENTER; 1445 ENTER;
1028 SAVETMPS; 1446 SAVETMPS;
1029 EXTEND (SP, 3);
1030 PL_runops = RUNOPS_DEFAULT;
1031 PUSHMARK (SP); 1447 PUSHMARK (SP);
1448 EXTEND (SP, 2);
1032 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1449 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1033 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1450 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1034 PUTBACK; 1451 PUTBACK;
1035 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); 1452 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1036 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1453 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
… …
1046 1463
1047 TAINT_NOT; 1464 TAINT_NOT;
1048 return 0; 1465 return 0;
1049} 1466}
1050 1467
1468static struct CoroSLF cctx_ssl_frame;
1469
1051static void 1470static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1471slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053{ 1472{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0; 1473 ta->prev = 0;
1056} 1474}
1057 1475
1058/* inject a fake call to Coro::State::_cctx_init into the execution */ 1476static int
1059/* _cctx_init should be careful, as it could be called at almost any time */ 1477slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060/* during execution of a perl program */
1061/* also initialises PL_top_env */
1062static void NOINLINE
1063cctx_prepare (pTHX_ coro_cctx *cctx)
1064{ 1478{
1065 dSP; 1479 *frame = cctx_ssl_frame;
1066 UNOP myop;
1067 1480
1481 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1482}
1483
1484/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1485static void ecb_noinline
1486cctx_prepare (pTHX)
1487{
1068 PL_top_env = &PL_start_env; 1488 PL_top_env = &PL_start_env;
1069 1489
1070 if (cctx->flags & CC_TRACE) 1490 if (cctx_current->flags & CC_TRACE)
1071 PL_runops = runops_trace; 1491 PL_runops = runops_trace;
1072 1492
1073 Zero (&myop, 1, UNOP); 1493 /* we already must be executing an SLF op, there is no other valid way
1074 myop.op_next = PL_op; 1494 * that can lead to creation of a new cctx */
1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1495 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1496 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076 1497
1077 PUSHMARK (SP); 1498 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078 EXTEND (SP, 2); 1499 cctx_ssl_frame = slf_frame;
1079 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1500
1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1501 slf_frame.prepare = slf_prepare_set_stacklevel;
1081 PUTBACK; 1502 slf_frame.check = slf_check_set_stacklevel;
1082 PL_op = (OP *)&myop;
1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084 SPAGAIN;
1085} 1503}
1086 1504
1087/* the tail of transfer: execute stuff we can only do after a transfer */ 1505/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void 1506ecb_inline void
1089transfer_tail (pTHX) 1507transfer_tail (pTHX)
1090{ 1508{
1091 free_coro_mortal (aTHX); 1509 free_coro_mortal (aTHX);
1510}
1511
1512/* try to exit the same way perl's main function would do */
1513/* we do not bother resetting the environment or other things *7
1514/* that are not, uhm, essential */
1515/* this obviously also doesn't work when perl is embedded */
1516static void ecb_noinline ecb_cold
1517perlish_exit (pTHX)
1518{
1519 int exitstatus = perl_destruct (PL_curinterp);
1520 perl_free (PL_curinterp);
1521 exit (exitstatus);
1092} 1522}
1093 1523
1094/* 1524/*
1095 * this is a _very_ stripped down perl interpreter ;) 1525 * this is a _very_ stripped down perl interpreter ;)
1096 */ 1526 */
… …
1108 /* normally we would need to skip the entersub here */ 1538 /* normally we would need to skip the entersub here */
1109 /* not doing so will re-execute it, which is exactly what we want */ 1539 /* not doing so will re-execute it, which is exactly what we want */
1110 /* PL_nop = PL_nop->op_next */ 1540 /* PL_nop = PL_nop->op_next */
1111 1541
1112 /* inject a fake subroutine call to cctx_init */ 1542 /* inject a fake subroutine call to cctx_init */
1113 cctx_prepare (aTHX_ (coro_cctx *)arg); 1543 cctx_prepare (aTHX);
1114 1544
1115 /* cctx_run is the alternative tail of transfer() */ 1545 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX); 1546 transfer_tail (aTHX);
1117 1547
1118 /* somebody or something will hit me for both perl_run and PL_restartop */ 1548 /* somebody or something will hit me for both perl_run and PL_restartop */
1119 PL_restartop = PL_op; 1549 PL_restartop = PL_op;
1120 perl_run (PL_curinterp); 1550 perl_run (PL_curinterp);
1551 /*
1552 * Unfortunately, there is no way to get at the return values of the
1553 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1554 * runtime errors here, as this is just a random interpreter, not a thread.
1555 */
1556
1557 /*
1558 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1559 * requires PL_scopestack_ix, so do it here if required.
1560 */
1561 if (!PL_scopestack_ix)
1562 ENTER;
1121 1563
1122 /* 1564 /*
1123 * If perl-run returns we assume exit() was being called or the coro 1565 * If perl-run returns we assume exit() was being called or the coro
1124 * fell off the end, which seems to be the only valid (non-bug) 1566 * fell off the end, which seems to be the only valid (non-bug)
1125 * reason for perl_run to return. We try to exit by jumping to the 1567 * reason for perl_run to return. We try to mimic whatever perl is normally
1126 * bootstrap-time "top" top_env, as we cannot restore the "main" 1568 * doing in that case. YMMV.
1127 * coroutine as Coro has no such concept
1128 */ 1569 */
1129 PL_top_env = main_top_env; 1570 perlish_exit (aTHX);
1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 } 1571 }
1132} 1572}
1133 1573
1134static coro_cctx * 1574static coro_cctx *
1135cctx_new () 1575cctx_new (void)
1136{ 1576{
1137 coro_cctx *cctx; 1577 coro_cctx *cctx;
1138 1578
1139 ++cctx_count; 1579 ++cctx_count;
1140 New (0, cctx, 1, coro_cctx); 1580 New (0, cctx, 1, coro_cctx);
… …
1146 return cctx; 1586 return cctx;
1147} 1587}
1148 1588
1149/* create a new cctx only suitable as source */ 1589/* create a new cctx only suitable as source */
1150static coro_cctx * 1590static coro_cctx *
1151cctx_new_empty () 1591cctx_new_empty (void)
1152{ 1592{
1153 coro_cctx *cctx = cctx_new (); 1593 coro_cctx *cctx = cctx_new ();
1154 1594
1155 cctx->sptr = 0; 1595 cctx->stack.sptr = 0;
1156 coro_create (&cctx->cctx, 0, 0, 0, 0); 1596 coro_create (&cctx->cctx, 0, 0, 0, 0);
1157 1597
1158 return cctx; 1598 return cctx;
1159} 1599}
1160 1600
1161/* create a new cctx suitable as destination/running a perl interpreter */ 1601/* create a new cctx suitable as destination/running a perl interpreter */
1162static coro_cctx * 1602static coro_cctx *
1163cctx_new_run () 1603cctx_new_run (void)
1164{ 1604{
1165 coro_cctx *cctx = cctx_new (); 1605 coro_cctx *cctx = cctx_new ();
1166 void *stack_start;
1167 size_t stack_size;
1168 1606
1169#if HAVE_MMAP 1607 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1170 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1171 /* mmap supposedly does allocate-on-write for us */
1172 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1173
1174 if (cctx->sptr != (void *)-1)
1175 {
1176 #if CORO_STACKGUARD
1177 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1178 #endif
1179 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1180 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1181 cctx->flags |= CC_MAPPED;
1182 } 1608 {
1183 else
1184#endif
1185 {
1186 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1187 New (0, cctx->sptr, cctx_stacksize, long);
1188
1189 if (!cctx->sptr)
1190 {
1191 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1609 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1192 _exit (EXIT_FAILURE); 1610 _exit (EXIT_FAILURE);
1193 }
1194
1195 stack_start = cctx->sptr;
1196 stack_size = cctx->ssize;
1197 } 1611 }
1198 1612
1199 #if CORO_USE_VALGRIND
1200 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1201 #endif
1202
1203 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1613 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1204 1614
1205 return cctx; 1615 return cctx;
1206} 1616}
1207 1617
1208static void 1618static void
1209cctx_destroy (coro_cctx *cctx) 1619cctx_destroy (coro_cctx *cctx)
1210{ 1620{
1211 if (!cctx) 1621 if (!cctx)
1212 return; 1622 return;
1213 1623
1624 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1625
1214 --cctx_count; 1626 --cctx_count;
1215 coro_destroy (&cctx->cctx); 1627 coro_destroy (&cctx->cctx);
1216 1628
1217 /* coro_transfer creates new, empty cctx's */ 1629 coro_stack_free (&cctx->stack);
1218 if (cctx->sptr)
1219 {
1220 #if CORO_USE_VALGRIND
1221 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1222 #endif
1223
1224#if HAVE_MMAP
1225 if (cctx->flags & CC_MAPPED)
1226 munmap (cctx->sptr, cctx->ssize);
1227 else
1228#endif
1229 Safefree (cctx->sptr);
1230 }
1231 1630
1232 Safefree (cctx); 1631 Safefree (cctx);
1233} 1632}
1234 1633
1235/* wether this cctx should be destructed */ 1634/* wether this cctx should be destructed */
1236#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1635#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1237 1636
1238static coro_cctx * 1637static coro_cctx *
1239cctx_get (pTHX) 1638cctx_get (pTHX)
1240{ 1639{
1241 while (expect_true (cctx_first)) 1640 while (ecb_expect_true (cctx_first))
1242 { 1641 {
1243 coro_cctx *cctx = cctx_first; 1642 coro_cctx *cctx = cctx_first;
1244 cctx_first = cctx->next; 1643 cctx_first = cctx->next;
1245 --cctx_idle; 1644 --cctx_idle;
1246 1645
1247 if (expect_true (!CCTX_EXPIRED (cctx))) 1646 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1248 return cctx; 1647 return cctx;
1249 1648
1250 cctx_destroy (cctx); 1649 cctx_destroy (cctx);
1251 } 1650 }
1252 1651
… …
1254} 1653}
1255 1654
1256static void 1655static void
1257cctx_put (coro_cctx *cctx) 1656cctx_put (coro_cctx *cctx)
1258{ 1657{
1259 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1658 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1260 1659
1261 /* free another cctx if overlimit */ 1660 /* free another cctx if overlimit */
1262 if (expect_false (cctx_idle >= cctx_max_idle)) 1661 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1263 { 1662 {
1264 coro_cctx *first = cctx_first; 1663 coro_cctx *first = cctx_first;
1265 cctx_first = first->next; 1664 cctx_first = first->next;
1266 --cctx_idle; 1665 --cctx_idle;
1267 1666
… …
1276/** coroutine switching *****************************************************/ 1675/** coroutine switching *****************************************************/
1277 1676
1278static void 1677static void
1279transfer_check (pTHX_ struct coro *prev, struct coro *next) 1678transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280{ 1679{
1680 /* TODO: throwing up here is considered harmful */
1681
1281 if (expect_true (prev != next)) 1682 if (ecb_expect_true (prev != next))
1282 { 1683 {
1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1684 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1685 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1285 1686
1286 if (expect_false (next->flags & CF_RUNNING)) 1687 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1288
1289 if (expect_false (next->flags & CF_DESTROYED))
1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1688 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1291 1689
1292#if !PERL_VERSION_ATLEAST (5,10,0) 1690#if !PERL_VERSION_ATLEAST (5,10,0)
1293 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1691 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1692 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1295#endif 1693#endif
1296 } 1694 }
1297} 1695}
1298 1696
1299/* always use the TRANSFER macro */ 1697/* always use the TRANSFER macro */
1300static void NOINLINE 1698static void ecb_noinline /* noinline so we have a fixed stackframe */
1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1699transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302{ 1700{
1303 dSTACKLEVEL; 1701 dSTACKLEVEL;
1304 1702
1305 /* sometimes transfer is only called to set idle_sp */ 1703 /* sometimes transfer is only called to set idle_sp */
1306 if (expect_false (!next)) 1704 if (ecb_expect_false (!prev))
1307 { 1705 {
1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1706 cctx_current->idle_sp = STACKLEVEL;
1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1707 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1310 } 1708 }
1311 else if (expect_true (prev != next)) 1709 else if (ecb_expect_true (prev != next))
1312 { 1710 {
1313 coro_cctx *prev__cctx; 1711 coro_cctx *cctx_prev;
1314 1712
1315 if (expect_false (prev->flags & CF_NEW)) 1713 if (ecb_expect_false (prev->flags & CF_NEW))
1316 { 1714 {
1317 /* create a new empty/source context */ 1715 /* create a new empty/source context */
1318 prev->cctx = cctx_new_empty ();
1319 prev->flags &= ~CF_NEW; 1716 prev->flags &= ~CF_NEW;
1320 prev->flags |= CF_RUNNING; 1717 prev->flags |= CF_RUNNING;
1321 } 1718 }
1322 1719
1323 prev->flags &= ~CF_RUNNING; 1720 prev->flags &= ~CF_RUNNING;
1324 next->flags |= CF_RUNNING; 1721 next->flags |= CF_RUNNING;
1325 1722
1326 /* first get rid of the old state */ 1723 /* first get rid of the old state */
1327 save_perl (aTHX_ prev); 1724 save_perl (aTHX_ prev);
1328 1725
1329 if (expect_false (next->flags & CF_NEW)) 1726 if (ecb_expect_false (next->flags & CF_NEW))
1330 { 1727 {
1331 /* need to start coroutine */ 1728 /* need to start coroutine */
1332 next->flags &= ~CF_NEW; 1729 next->flags &= ~CF_NEW;
1333 /* setup coroutine call */ 1730 /* setup coroutine call */
1334 coro_setup (aTHX_ next); 1731 init_perl (aTHX_ next);
1335 } 1732 }
1336 else 1733 else
1337 load_perl (aTHX_ next); 1734 load_perl (aTHX_ next);
1338 1735
1339 prev__cctx = prev->cctx;
1340
1341 /* possibly untie and reuse the cctx */ 1736 /* possibly untie and reuse the cctx */
1342 if (expect_true ( 1737 if (ecb_expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel 1738 cctx_current->idle_sp == STACKLEVEL
1344 && !(prev__cctx->flags & CC_TRACE) 1739 && !(cctx_current->flags & CC_TRACE)
1345 && !force_cctx 1740 && !force_cctx
1346 )) 1741 ))
1347 { 1742 {
1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1743 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1744 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1350 1745
1351 prev->cctx = 0;
1352
1353 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1746 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1747 /* without this the next cctx_get might destroy the running cctx while still in use */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1748 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1356 if (!next->cctx) 1749 if (ecb_expect_true (!next->cctx))
1357 next->cctx = cctx_get (aTHX); 1750 next->cctx = cctx_get (aTHX);
1358 1751
1359 cctx_put (prev__cctx); 1752 cctx_put (cctx_current);
1360 } 1753 }
1754 else
1755 prev->cctx = cctx_current;
1361 1756
1362 ++next->usecount; 1757 ++next->usecount;
1363 1758
1364 if (expect_true (!next->cctx)) 1759 cctx_prev = cctx_current;
1365 next->cctx = cctx_get (aTHX); 1760 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1366 1761
1367 if (expect_false (prev__cctx != next->cctx)) 1762 next->cctx = 0;
1763
1764 if (ecb_expect_false (cctx_prev != cctx_current))
1368 { 1765 {
1369 prev__cctx->top_env = PL_top_env; 1766 cctx_prev->top_env = PL_top_env;
1370 PL_top_env = next->cctx->top_env; 1767 PL_top_env = cctx_current->top_env;
1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1768 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1372 } 1769 }
1373 1770
1374 transfer_tail (aTHX); 1771 transfer_tail (aTHX);
1375 } 1772 }
1376} 1773}
… …
1378#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1775#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1379#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1776#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1380 1777
1381/** high level stuff ********************************************************/ 1778/** high level stuff ********************************************************/
1382 1779
1780/* this function is actually Coro, not Coro::State, but we call it from here */
1781/* because it is convenient - but it hasn't been declared yet for that reason */
1383static int 1782static void
1783coro_call_on_destroy (pTHX_ struct coro *coro);
1784
1785static void
1384coro_state_destroy (pTHX_ struct coro *coro) 1786coro_state_destroy (pTHX_ struct coro *coro)
1385{ 1787{
1386 if (coro->flags & CF_DESTROYED) 1788 if (coro->flags & CF_ZOMBIE)
1387 return 0; 1789 return;
1388 1790
1389 if (coro->on_destroy)
1390 coro->on_destroy (aTHX_ coro); 1791 slf_destroy (aTHX_ coro);
1391 1792
1392 coro->flags |= CF_DESTROYED; 1793 coro->flags |= CF_ZOMBIE;
1393 1794
1394 if (coro->flags & CF_READY) 1795 if (coro->flags & CF_READY)
1395 { 1796 {
1396 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1797 /* reduce nready, as destroying a ready coro effectively unreadies it */
1397 /* alternative: look through all ready queues and remove the coro */ 1798 /* alternative: look through all ready queues and remove the coro */
1398 --coro_nready; 1799 --coro_nready;
1399 } 1800 }
1400 else 1801 else
1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1802 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1402 1803
1403 if (coro->mainstack && coro->mainstack != main_mainstack)
1404 {
1405 struct coro temp;
1406
1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1408
1409 save_perl (aTHX_ &temp);
1410 load_perl (aTHX_ coro);
1411
1412 coro_destruct (aTHX_ coro);
1413
1414 load_perl (aTHX_ &temp);
1415
1416 coro->slot = 0;
1417 }
1418
1419 cctx_destroy (coro->cctx);
1420 SvREFCNT_dec (coro->args);
1421
1422 if (coro->next) coro->next->prev = coro->prev; 1804 if (coro->next) coro->next->prev = coro->prev;
1423 if (coro->prev) coro->prev->next = coro->next; 1805 if (coro->prev) coro->prev->next = coro->next;
1424 if (coro == coro_first) coro_first = coro->next; 1806 if (coro == coro_first) coro_first = coro->next;
1425 1807
1426 return 1; 1808 if (coro->mainstack
1809 && coro->mainstack != main_mainstack
1810 && coro->slot
1811 && !PL_dirty)
1812 destroy_perl (aTHX_ coro);
1813
1814 cctx_destroy (coro->cctx);
1815 SvREFCNT_dec (coro->startcv);
1816 SvREFCNT_dec (coro->args);
1817 SvREFCNT_dec (coro->swap_sv);
1818 SvREFCNT_dec (CORO_THROW);
1819
1820 coro_call_on_destroy (aTHX_ coro);
1821
1822 /* more destruction mayhem in coro_state_free */
1427} 1823}
1428 1824
1429static int 1825static int
1430coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1826coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1431{ 1827{
1432 struct coro *coro = (struct coro *)mg->mg_ptr; 1828 struct coro *coro = (struct coro *)mg->mg_ptr;
1433 mg->mg_ptr = 0; 1829 mg->mg_ptr = 0;
1434 1830
1435 coro->hv = 0;
1436
1437 if (--coro->refcnt < 0)
1438 {
1439 coro_state_destroy (aTHX_ coro); 1831 coro_state_destroy (aTHX_ coro);
1832 SvREFCNT_dec (coro->on_destroy);
1833 SvREFCNT_dec (coro->status);
1834
1440 Safefree (coro); 1835 Safefree (coro);
1441 }
1442 1836
1443 return 0; 1837 return 0;
1444} 1838}
1445 1839
1446static int 1840static int ecb_cold
1447coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1841coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1448{ 1842{
1449 struct coro *coro = (struct coro *)mg->mg_ptr; 1843 /* called when perl clones the current process the slow way (windows process emulation) */
1450 1844 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1451 ++coro->refcnt; 1845 mg->mg_ptr = 0;
1846 mg->mg_virtual = 0;
1452 1847
1453 return 0; 1848 return 0;
1454} 1849}
1455 1850
1456static MGVTBL coro_state_vtbl = { 1851static MGVTBL coro_state_vtbl = {
… …
1481 TRANSFER (ta, 1); 1876 TRANSFER (ta, 1);
1482} 1877}
1483 1878
1484/** Coro ********************************************************************/ 1879/** Coro ********************************************************************/
1485 1880
1486INLINE void 1881ecb_inline void
1487coro_enq (pTHX_ struct coro *coro) 1882coro_enq (pTHX_ struct coro *coro)
1488{ 1883{
1489 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1884 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1490}
1491 1885
1492INLINE SV * 1886 SvREFCNT_inc_NN (coro->hv);
1887
1888 coro->next_ready = 0;
1889 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1890 ready [1] = coro;
1891}
1892
1893ecb_inline struct coro *
1493coro_deq (pTHX) 1894coro_deq (pTHX)
1494{ 1895{
1495 int prio; 1896 int prio;
1496 1897
1497 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1898 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1498 if (AvFILLp (coro_ready [prio]) >= 0) 1899 {
1499 return av_shift (coro_ready [prio]); 1900 struct coro **ready = coro_ready [prio];
1901
1902 if (ready [0])
1903 {
1904 struct coro *coro = ready [0];
1905 ready [0] = coro->next_ready;
1906 return coro;
1907 }
1908 }
1500 1909
1501 return 0; 1910 return 0;
1911}
1912
1913static void
1914invoke_sv_ready_hook_helper (void)
1915{
1916 dTHX;
1917 dSP;
1918
1919 ENTER;
1920 SAVETMPS;
1921
1922 PUSHMARK (SP);
1923 PUTBACK;
1924 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1925
1926 FREETMPS;
1927 LEAVE;
1502} 1928}
1503 1929
1504static int 1930static int
1505api_ready (pTHX_ SV *coro_sv) 1931api_ready (pTHX_ SV *coro_sv)
1506{ 1932{
1507 struct coro *coro;
1508 SV *sv_hook;
1509 void (*xs_hook)(void);
1510
1511 if (SvROK (coro_sv))
1512 coro_sv = SvRV (coro_sv);
1513
1514 coro = SvSTATE (coro_sv); 1933 struct coro *coro = SvSTATE (coro_sv);
1515 1934
1516 if (coro->flags & CF_READY) 1935 if (coro->flags & CF_READY)
1517 return 0; 1936 return 0;
1518 1937
1519 coro->flags |= CF_READY; 1938 coro->flags |= CF_READY;
1520 1939
1521 sv_hook = coro_nready ? 0 : coro_readyhook;
1522 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1523
1524 coro_enq (aTHX_ coro); 1940 coro_enq (aTHX_ coro);
1525 ++coro_nready;
1526 1941
1527 if (sv_hook) 1942 if (!coro_nready++)
1528 { 1943 if (coroapi.readyhook)
1529 dSP; 1944 coroapi.readyhook ();
1530
1531 ENTER;
1532 SAVETMPS;
1533
1534 PUSHMARK (SP);
1535 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD);
1537 SPAGAIN;
1538
1539 FREETMPS;
1540 LEAVE;
1541 }
1542
1543 if (xs_hook)
1544 xs_hook ();
1545 1945
1546 return 1; 1946 return 1;
1547} 1947}
1548 1948
1549static int 1949static int
1550api_is_ready (pTHX_ SV *coro_sv) 1950api_is_ready (pTHX_ SV *coro_sv)
1551{ 1951{
1552 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1952 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553} 1953}
1554 1954
1555INLINE void 1955/* expects to own a reference to next->hv */
1956ecb_inline void
1556prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1957prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1557{ 1958{
1558 SV *prev_sv, *next_sv;
1559
1560 for (;;)
1561 {
1562 next_sv = coro_deq (aTHX);
1563
1564 /* nothing to schedule: call the idle handler */
1565 if (expect_false (!next_sv))
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 continue;
1580 }
1581
1582 ta->next = SvSTATE_hv (next_sv);
1583
1584 /* cannot transfer to destroyed coros, skip and look for next */
1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1586 {
1587 SvREFCNT_dec (next_sv);
1588 /* coro_nready has already been taken care of by destroy */
1589 continue;
1590 }
1591
1592 --coro_nready;
1593 break;
1594 }
1595
1596 /* free this only after the transfer */
1597 prev_sv = SvRV (coro_current); 1959 SV *prev_sv = SvRV (coro_current);
1960
1598 ta->prev = SvSTATE_hv (prev_sv); 1961 ta->prev = SvSTATE_hv (prev_sv);
1962 ta->next = next;
1963
1599 TRANSFER_CHECK (*ta); 1964 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1965
1601 ta->next->flags &= ~CF_READY;
1602 SvRV_set (coro_current, next_sv); 1966 SvRV_set (coro_current, (SV *)next->hv);
1603 1967
1604 free_coro_mortal (aTHX); 1968 free_coro_mortal (aTHX);
1605 coro_mortal = prev_sv; 1969 coro_mortal = prev_sv;
1606} 1970}
1607 1971
1608INLINE void 1972static void
1973prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1974{
1975 for (;;)
1976 {
1977 struct coro *next = coro_deq (aTHX);
1978
1979 if (ecb_expect_true (next))
1980 {
1981 /* cannot transfer to destroyed coros, skip and look for next */
1982 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1983 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1984 else
1985 {
1986 next->flags &= ~CF_READY;
1987 --coro_nready;
1988
1989 prepare_schedule_to (aTHX_ ta, next);
1990 break;
1991 }
1992 }
1993 else
1994 {
1995 /* nothing to schedule: call the idle handler */
1996 if (SvROK (sv_idle)
1997 && SvOBJECT (SvRV (sv_idle)))
1998 {
1999 if (SvRV (sv_idle) == SvRV (coro_current))
2000 {
2001 require_pv ("Carp");
2002
2003 {
2004 dSP;
2005
2006 ENTER;
2007 SAVETMPS;
2008
2009 PUSHMARK (SP);
2010 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2011 PUTBACK;
2012 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2013
2014 FREETMPS;
2015 LEAVE;
2016 }
2017 }
2018
2019 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
2020 api_ready (aTHX_ SvRV (sv_idle));
2021 --coro_nready;
2022 }
2023 else
2024 {
2025 /* TODO: deprecated, remove, cannot work reliably *//*D*/
2026 dSP;
2027
2028 ENTER;
2029 SAVETMPS;
2030
2031 PUSHMARK (SP);
2032 PUTBACK;
2033 call_sv (sv_idle, G_VOID | G_DISCARD);
2034
2035 FREETMPS;
2036 LEAVE;
2037 }
2038 }
2039 }
2040}
2041
2042ecb_inline void
1609prepare_cede (pTHX_ struct coro_transfer_args *ta) 2043prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610{ 2044{
1611 api_ready (aTHX_ coro_current); 2045 api_ready (aTHX_ coro_current);
1612 prepare_schedule (aTHX_ ta); 2046 prepare_schedule (aTHX_ ta);
1613} 2047}
1614 2048
1615INLINE void 2049ecb_inline void
1616prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2050prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1617{ 2051{
1618 SV *prev = SvRV (coro_current); 2052 SV *prev = SvRV (coro_current);
1619 2053
1620 if (coro_nready) 2054 if (coro_nready)
… …
1633 2067
1634 prepare_schedule (aTHX_ &ta); 2068 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1); 2069 TRANSFER (ta, 1);
1636} 2070}
1637 2071
2072static void
2073api_schedule_to (pTHX_ SV *coro_sv)
2074{
2075 struct coro_transfer_args ta;
2076 struct coro *next = SvSTATE (coro_sv);
2077
2078 SvREFCNT_inc_NN (coro_sv);
2079 prepare_schedule_to (aTHX_ &ta, next);
2080}
2081
1638static int 2082static int
1639api_cede (pTHX) 2083api_cede (pTHX)
1640{ 2084{
1641 struct coro_transfer_args ta; 2085 struct coro_transfer_args ta;
1642 2086
1643 prepare_cede (aTHX_ &ta); 2087 prepare_cede (aTHX_ &ta);
1644 2088
1645 if (expect_true (ta.prev != ta.next)) 2089 if (ecb_expect_true (ta.prev != ta.next))
1646 { 2090 {
1647 TRANSFER (ta, 1); 2091 TRANSFER (ta, 1);
1648 return 1; 2092 return 1;
1649 } 2093 }
1650 else 2094 else
… …
1669static void 2113static void
1670api_trace (pTHX_ SV *coro_sv, int flags) 2114api_trace (pTHX_ SV *coro_sv, int flags)
1671{ 2115{
1672 struct coro *coro = SvSTATE (coro_sv); 2116 struct coro *coro = SvSTATE (coro_sv);
1673 2117
2118 if (coro->flags & CF_RUNNING)
2119 croak ("cannot enable tracing on a running coroutine, caught");
2120
1674 if (flags & CC_TRACE) 2121 if (flags & CC_TRACE)
1675 { 2122 {
1676 if (!coro->cctx) 2123 if (!coro->cctx)
1677 coro->cctx = cctx_new_run (); 2124 coro->cctx = cctx_new_run ();
1678 else if (!(coro->cctx->flags & CC_TRACE)) 2125 else if (!(coro->cctx->flags & CC_TRACE))
1679 croak ("cannot enable tracing on coroutine with custom stack,"); 2126 croak ("cannot enable tracing on coroutine with custom stack, caught");
1680 2127
1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2128 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1682 } 2129 }
1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2130 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1684 { 2131 {
… …
1689 else 2136 else
1690 coro->slot->runops = RUNOPS_DEFAULT; 2137 coro->slot->runops = RUNOPS_DEFAULT;
1691 } 2138 }
1692} 2139}
1693 2140
2141static void
2142coro_push_av (pTHX_ AV *av, I32 gimme_v)
2143{
2144 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2145 {
2146 dSP;
2147
2148 if (gimme_v == G_SCALAR)
2149 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2150 else
2151 {
2152 int i;
2153 EXTEND (SP, AvFILLp (av) + 1);
2154
2155 for (i = 0; i <= AvFILLp (av); ++i)
2156 PUSHs (AvARRAY (av)[i]);
2157 }
2158
2159 PUTBACK;
2160 }
2161}
2162
2163static void
2164coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2165{
2166 if (!coro->on_destroy)
2167 coro->on_destroy = newAV ();
2168
2169 av_push (coro->on_destroy, cb);
2170}
2171
2172static void
2173slf_destroy_join (pTHX_ struct CoroSLF *frame)
2174{
2175 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2176}
2177
2178static int
2179slf_check_join (pTHX_ struct CoroSLF *frame)
2180{
2181 struct coro *coro = (struct coro *)frame->data;
2182
2183 if (!coro->status)
2184 return 1;
2185
2186 frame->destroy = 0;
2187
2188 coro_push_av (aTHX_ coro->status, GIMME_V);
2189
2190 SvREFCNT_dec ((SV *)coro->hv);
2191
2192 return 0;
2193}
2194
2195static void
2196slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2197{
2198 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2199
2200 if (items > 1)
2201 croak ("join called with too many arguments");
2202
2203 if (coro->status)
2204 frame->prepare = prepare_nop;
2205 else
2206 {
2207 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2208 frame->prepare = prepare_schedule;
2209 }
2210
2211 frame->check = slf_check_join;
2212 frame->destroy = slf_destroy_join;
2213 frame->data = (void *)coro;
2214 SvREFCNT_inc (coro->hv);
2215}
2216
2217static void
2218coro_call_on_destroy (pTHX_ struct coro *coro)
2219{
2220 AV *od = coro->on_destroy;
2221
2222 if (!od)
2223 return;
2224
2225 coro->on_destroy = 0;
2226 sv_2mortal ((SV *)od);
2227
2228 while (AvFILLp (od) >= 0)
2229 {
2230 SV *cb = sv_2mortal (av_pop (od));
2231
2232 /* coro hv's (and only hv's at the moment) are supported as well */
2233 if (SvSTATEhv_p (aTHX_ cb))
2234 api_ready (aTHX_ cb);
2235 else
2236 {
2237 dSP; /* don't disturb outer sp */
2238 PUSHMARK (SP);
2239
2240 if (coro->status)
2241 {
2242 PUTBACK;
2243 coro_push_av (aTHX_ coro->status, G_ARRAY);
2244 SPAGAIN;
2245 }
2246
2247 PUTBACK;
2248 call_sv (cb, G_VOID | G_DISCARD);
2249 }
2250 }
2251}
2252
2253static void
2254coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2255{
2256 AV *av;
2257
2258 if (coro->status)
2259 {
2260 av = coro->status;
2261 av_clear (av);
2262 }
2263 else
2264 av = coro->status = newAV ();
2265
2266 /* items are actually not so common, so optimise for this case */
2267 if (items)
2268 {
2269 int i;
2270
2271 av_extend (av, items - 1);
2272
2273 for (i = 0; i < items; ++i)
2274 av_push (av, SvREFCNT_inc_NN (arg [i]));
2275 }
2276}
2277
2278static void
2279slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2280{
2281 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2282 api_ready (aTHX_ sv_manager);
2283
2284 frame->prepare = prepare_schedule;
2285 frame->check = slf_check_repeat;
2286
2287 /* as a minor optimisation, we could unwind all stacks here */
2288 /* but that puts extra pressure on pp_slf, and is not worth much */
2289 /*coro_unwind_stacks (aTHX);*/
2290}
2291
2292static void
2293slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2294{
2295 HV *coro_hv = (HV *)SvRV (coro_current);
2296
2297 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2298 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2299}
2300
2301static void
2302slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2303{
2304 HV *coro_hv;
2305 struct coro *coro;
2306
2307 if (items <= 0)
2308 croak ("Coro::cancel called without coro object,");
2309
2310 coro = SvSTATE (arg [0]);
2311 coro_hv = coro->hv;
2312
2313 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2314
2315 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2316 {
2317 /* coro currently busy cancelling something, so just notify it */
2318 coro->slf_frame.data = (void *)coro;
2319
2320 frame->prepare = prepare_nop;
2321 frame->check = slf_check_nop;
2322 }
2323 else if (coro_hv == (HV *)SvRV (coro_current))
2324 {
2325 /* cancelling the current coro is allowed, and equals terminate */
2326 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2327 }
2328 else
2329 {
2330 struct coro *self = SvSTATE_current;
2331
2332 if (!self)
2333 croak ("Coro::cancel called outside of thread content,");
2334
2335 /* otherwise we cancel directly, purely for speed reasons
2336 * unfortunately, this requires some magic trickery, as
2337 * somebody else could cancel us, so we have to fight the cancellation.
2338 * this is ugly, and hopefully fully worth the extra speed.
2339 * besides, I can't get the slow-but-safe version working...
2340 */
2341 slf_frame.data = 0;
2342 self->flags |= CF_NOCANCEL;
2343 coro_state_destroy (aTHX_ coro);
2344 self->flags &= ~CF_NOCANCEL;
2345
2346 if (slf_frame.data)
2347 {
2348 /* while we were busy we have been cancelled, so terminate */
2349 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2350 }
2351 else
2352 {
2353 frame->prepare = prepare_nop;
2354 frame->check = slf_check_nop;
2355 }
2356 }
2357}
2358
2359static int
2360slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2361{
2362 frame->prepare = 0;
2363 coro_unwind_stacks (aTHX);
2364
2365 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2366
2367 return 1;
2368}
2369
2370static int
2371safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2372{
2373 if (coro->cctx)
2374 croak ("coro inside C callback, unable to cancel at this time, caught");
2375
2376 if (coro->flags & (CF_NEW | CF_ZOMBIE))
2377 {
2378 coro_set_status (aTHX_ coro, arg, items);
2379 coro_state_destroy (aTHX_ coro);
2380 }
2381 else
2382 {
2383 if (!coro->slf_frame.prepare)
2384 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2385
2386 slf_destroy (aTHX_ coro);
2387
2388 coro_set_status (aTHX_ coro, arg, items);
2389 coro->slf_frame.prepare = prepare_nop;
2390 coro->slf_frame.check = slf_check_safe_cancel;
2391
2392 api_ready (aTHX_ (SV *)coro->hv);
2393 }
2394
2395 return 1;
2396}
2397
2398/*****************************************************************************/
2399/* async pool handler */
2400
2401static int
2402slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2403{
2404 HV *hv = (HV *)SvRV (coro_current);
2405 struct coro *coro = (struct coro *)frame->data;
2406
2407 if (!coro->invoke_cb)
2408 return 1; /* loop till we have invoke */
2409 else
2410 {
2411 hv_store (hv, "desc", sizeof ("desc") - 1,
2412 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2413
2414 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2415
2416 {
2417 dSP;
2418 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2419 PUTBACK;
2420 }
2421
2422 SvREFCNT_dec (GvAV (PL_defgv));
2423 GvAV (PL_defgv) = coro->invoke_av;
2424 coro->invoke_av = 0;
2425
2426 return 0;
2427 }
2428}
2429
2430static void
2431slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2432{
2433 HV *hv = (HV *)SvRV (coro_current);
2434 struct coro *coro = SvSTATE_hv ((SV *)hv);
2435
2436 if (ecb_expect_true (coro->saved_deffh))
2437 {
2438 /* subsequent iteration */
2439 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2440 coro->saved_deffh = 0;
2441
2442 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2443 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2444 {
2445 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2446 return;
2447 }
2448 else
2449 {
2450 av_clear (GvAV (PL_defgv));
2451 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2452
2453 if (ecb_expect_false (coro->swap_sv))
2454 {
2455 SWAP_SVS_LEAVE (coro);
2456 SvREFCNT_dec_NN (coro->swap_sv);
2457 coro->swap_sv = 0;
2458 }
2459
2460 coro->prio = 0;
2461
2462 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2463 api_trace (aTHX_ coro_current, 0);
2464
2465 frame->prepare = prepare_schedule;
2466 av_push (av_async_pool, SvREFCNT_inc (hv));
2467 }
2468 }
2469 else
2470 {
2471 /* first iteration, simply fall through */
2472 frame->prepare = prepare_nop;
2473 }
2474
2475 frame->check = slf_check_pool_handler;
2476 frame->data = (void *)coro;
2477}
2478
2479/*****************************************************************************/
2480/* rouse callback */
2481
2482#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2483
2484static void
2485coro_rouse_callback (pTHX_ CV *cv)
2486{
2487 dXSARGS;
2488 SV *data = (SV *)S_GENSUB_ARG;
2489
2490 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2491 {
2492 /* first call, set args */
2493 SV *coro = SvRV (data);
2494 AV *av = newAV ();
2495
2496 SvRV_set (data, (SV *)av);
2497
2498 /* better take a full copy of the arguments */
2499 while (items--)
2500 av_store (av, items, newSVsv (ST (items)));
2501
2502 api_ready (aTHX_ coro);
2503 SvREFCNT_dec (coro);
2504 }
2505
2506 XSRETURN_EMPTY;
2507}
2508
2509static int
2510slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2511{
2512 SV *data = (SV *)frame->data;
2513
2514 if (CORO_THROW)
2515 return 0;
2516
2517 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2518 return 1;
2519
2520 /* now push all results on the stack */
2521 {
2522 dSP;
2523 AV *av = (AV *)SvRV (data);
2524 int i;
2525
2526 EXTEND (SP, AvFILLp (av) + 1);
2527 for (i = 0; i <= AvFILLp (av); ++i)
2528 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2529
2530 /* we have stolen the elements, so set length to zero and free */
2531 AvFILLp (av) = -1;
2532 av_undef (av);
2533
2534 PUTBACK;
2535 }
2536
2537 return 0;
2538}
2539
2540static void
2541slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2542{
2543 SV *cb;
2544
2545 if (items)
2546 cb = arg [0];
2547 else
2548 {
2549 struct coro *coro = SvSTATE_current;
2550
2551 if (!coro->rouse_cb)
2552 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2553
2554 cb = sv_2mortal (coro->rouse_cb);
2555 coro->rouse_cb = 0;
2556 }
2557
2558 if (!SvROK (cb)
2559 || SvTYPE (SvRV (cb)) != SVt_PVCV
2560 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2561 croak ("Coro::rouse_wait called with illegal callback argument,");
2562
2563 {
2564 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2565 SV *data = (SV *)S_GENSUB_ARG;
2566
2567 frame->data = (void *)data;
2568 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2569 frame->check = slf_check_rouse_wait;
2570 }
2571}
2572
2573static SV *
2574coro_new_rouse_cb (pTHX)
2575{
2576 HV *hv = (HV *)SvRV (coro_current);
2577 struct coro *coro = SvSTATE_hv (hv);
2578 SV *data = newRV_inc ((SV *)hv);
2579 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2580
2581 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2582 SvREFCNT_dec (data); /* magicext increases the refcount */
2583
2584 SvREFCNT_dec (coro->rouse_cb);
2585 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2586
2587 return cb;
2588}
2589
2590/*****************************************************************************/
2591/* schedule-like-function opcode (SLF) */
2592
2593static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2594static const CV *slf_cv;
2595static SV **slf_argv;
2596static int slf_argc, slf_arga; /* count, allocated */
2597static I32 slf_ax; /* top of stack, for restore */
2598
2599/* this restores the stack in the case we patched the entersub, to */
2600/* recreate the stack frame as perl will on following calls */
2601/* since entersub cleared the stack */
2602static OP *
2603pp_restore (pTHX)
2604{
2605 int i;
2606 SV **SP = PL_stack_base + slf_ax;
2607
2608 PUSHMARK (SP);
2609
2610 EXTEND (SP, slf_argc + 1);
2611
2612 for (i = 0; i < slf_argc; ++i)
2613 PUSHs (sv_2mortal (slf_argv [i]));
2614
2615 PUSHs ((SV *)CvGV (slf_cv));
2616
2617 RETURNOP (slf_restore.op_first);
2618}
2619
2620static void
2621slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2622{
2623 SV **arg = (SV **)slf_frame.data;
2624
2625 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2626}
2627
2628static void
2629slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2630{
2631 if (items != 2)
2632 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2633
2634 frame->prepare = slf_prepare_transfer;
2635 frame->check = slf_check_nop;
2636 frame->data = (void *)arg; /* let's hope it will stay valid */
2637}
2638
2639static void
2640slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2641{
2642 frame->prepare = prepare_schedule;
2643 frame->check = slf_check_nop;
2644}
2645
2646static void
2647slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2648{
2649 struct coro *next = (struct coro *)slf_frame.data;
2650
2651 SvREFCNT_inc_NN (next->hv);
2652 prepare_schedule_to (aTHX_ ta, next);
2653}
2654
2655static void
2656slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2657{
2658 if (!items)
2659 croak ("Coro::schedule_to expects a coroutine argument, caught");
2660
2661 frame->data = (void *)SvSTATE (arg [0]);
2662 frame->prepare = slf_prepare_schedule_to;
2663 frame->check = slf_check_nop;
2664}
2665
2666static void
2667slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2668{
2669 api_ready (aTHX_ SvRV (coro_current));
2670
2671 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2672}
2673
2674static void
2675slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2676{
2677 frame->prepare = prepare_cede;
2678 frame->check = slf_check_nop;
2679}
2680
2681static void
2682slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2683{
2684 frame->prepare = prepare_cede_notself;
2685 frame->check = slf_check_nop;
2686}
2687
2688/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2689static void
2690slf_destroy (pTHX_ struct coro *coro)
2691{
2692 struct CoroSLF frame = coro->slf_frame;
2693
2694 /*
2695 * The on_destroy below most likely is from an SLF call.
2696 * Since by definition the SLF call will not finish when we destroy
2697 * the coro, we will have to force-finish it here, otherwise
2698 * cleanup functions cannot call SLF functions.
2699 */
2700 coro->slf_frame.prepare = 0;
2701
2702 /* this callback is reserved for slf functions needing to do cleanup */
2703 if (frame.destroy && frame.prepare && !PL_dirty)
2704 frame.destroy (aTHX_ &frame);
2705}
2706
2707/*
2708 * these not obviously related functions are all rolled into one
2709 * function to increase chances that they all will call transfer with the same
2710 * stack offset
2711 * SLF stands for "schedule-like-function".
2712 */
2713static OP *
2714pp_slf (pTHX)
2715{
2716 I32 checkmark; /* mark SP to see how many elements check has pushed */
2717
2718 /* set up the slf frame, unless it has already been set-up */
2719 /* the latter happens when a new coro has been started */
2720 /* or when a new cctx was attached to an existing coroutine */
2721 if (ecb_expect_true (!slf_frame.prepare))
2722 {
2723 /* first iteration */
2724 dSP;
2725 SV **arg = PL_stack_base + TOPMARK + 1;
2726 int items = SP - arg; /* args without function object */
2727 SV *gv = *sp;
2728
2729 /* do a quick consistency check on the "function" object, and if it isn't */
2730 /* for us, divert to the real entersub */
2731 if (SvTYPE (gv) != SVt_PVGV
2732 || !GvCV (gv)
2733 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2734 return PL_ppaddr[OP_ENTERSUB](aTHX);
2735
2736 if (!(PL_op->op_flags & OPf_STACKED))
2737 {
2738 /* ampersand-form of call, use @_ instead of stack */
2739 AV *av = GvAV (PL_defgv);
2740 arg = AvARRAY (av);
2741 items = AvFILLp (av) + 1;
2742 }
2743
2744 /* now call the init function, which needs to set up slf_frame */
2745 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2746 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2747
2748 /* pop args */
2749 SP = PL_stack_base + POPMARK;
2750
2751 PUTBACK;
2752 }
2753
2754 /* now that we have a slf_frame, interpret it! */
2755 /* we use a callback system not to make the code needlessly */
2756 /* complicated, but so we can run multiple perl coros from one cctx */
2757
2758 do
2759 {
2760 struct coro_transfer_args ta;
2761
2762 slf_frame.prepare (aTHX_ &ta);
2763 TRANSFER (ta, 0);
2764
2765 checkmark = PL_stack_sp - PL_stack_base;
2766 }
2767 while (slf_frame.check (aTHX_ &slf_frame));
2768
2769 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2770
2771 /* exception handling */
2772 if (ecb_expect_false (CORO_THROW))
2773 {
2774 SV *exception = sv_2mortal (CORO_THROW);
2775
2776 CORO_THROW = 0;
2777 sv_setsv (ERRSV, exception);
2778 croak (0);
2779 }
2780
2781 /* return value handling - mostly like entersub */
2782 /* make sure we put something on the stack in scalar context */
2783 if (GIMME_V == G_SCALAR
2784 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2785 {
2786 dSP;
2787 SV **bot = PL_stack_base + checkmark;
2788
2789 if (sp == bot) /* too few, push undef */
2790 bot [1] = &PL_sv_undef;
2791 else /* too many, take last one */
2792 bot [1] = *sp;
2793
2794 SP = bot + 1;
2795
2796 PUTBACK;
2797 }
2798
2799 return NORMAL;
2800}
2801
2802static void
2803api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2804{
2805 int i;
2806 SV **arg = PL_stack_base + ax;
2807 int items = PL_stack_sp - arg + 1;
2808
2809 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2810
2811 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2812 && PL_op->op_ppaddr != pp_slf)
2813 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2814
2815 CvFLAGS (cv) |= CVf_SLF;
2816 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2817 slf_cv = cv;
2818
2819 /* we patch the op, and then re-run the whole call */
2820 /* we have to put the same argument on the stack for this to work */
2821 /* and this will be done by pp_restore */
2822 slf_restore.op_next = (OP *)&slf_restore;
2823 slf_restore.op_type = OP_CUSTOM;
2824 slf_restore.op_ppaddr = pp_restore;
2825 slf_restore.op_first = PL_op;
2826
2827 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2828
2829 if (PL_op->op_flags & OPf_STACKED)
2830 {
2831 if (items > slf_arga)
2832 {
2833 slf_arga = items;
2834 Safefree (slf_argv);
2835 New (0, slf_argv, slf_arga, SV *);
2836 }
2837
2838 slf_argc = items;
2839
2840 for (i = 0; i < items; ++i)
2841 slf_argv [i] = SvREFCNT_inc (arg [i]);
2842 }
2843 else
2844 slf_argc = 0;
2845
2846 PL_op->op_ppaddr = pp_slf;
2847 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2848
2849 PL_op = (OP *)&slf_restore;
2850}
2851
2852/*****************************************************************************/
2853/* dynamic wind */
2854
2855static void
2856on_enterleave_call (pTHX_ SV *cb)
2857{
2858 dSP;
2859
2860 PUSHSTACK;
2861
2862 PUSHMARK (SP);
2863 PUTBACK;
2864 call_sv (cb, G_VOID | G_DISCARD);
2865 SPAGAIN;
2866
2867 POPSTACK;
2868}
2869
2870static SV *
2871coro_avp_pop_and_free (pTHX_ AV **avp)
2872{
2873 AV *av = *avp;
2874 SV *res = av_pop (av);
2875
2876 if (AvFILLp (av) < 0)
2877 {
2878 *avp = 0;
2879 SvREFCNT_dec (av);
2880 }
2881
2882 return res;
2883}
2884
2885static void
2886coro_pop_on_enter (pTHX_ void *coro)
2887{
2888 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2889 SvREFCNT_dec (cb);
2890}
2891
2892static void
2893coro_pop_on_leave (pTHX_ void *coro)
2894{
2895 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2896 on_enterleave_call (aTHX_ sv_2mortal (cb));
2897}
2898
2899static void
2900enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2901{
2902 if (!hook)
2903 return;
2904
2905 if (!*avp)
2906 {
2907 *avp = newAV ();
2908 AvREAL_off (*avp);
2909 }
2910
2911 av_push (*avp, (SV *)hook);
2912 av_push (*avp, (SV *)arg);
2913}
2914
2915static void
2916enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2917{
2918 AV *av = *avp;
2919 int i;
2920
2921 if (!av)
2922 return;
2923
2924 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2925 if (AvARRAY (av)[i] == (SV *)hook)
2926 {
2927 if (execute)
2928 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2929
2930 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2931 av_pop (av);
2932 av_pop (av);
2933 break;
2934 }
2935
2936 if (AvFILLp (av) >= 0)
2937 {
2938 *avp = 0;
2939 SvREFCNT_dec_NN (av);
2940 }
2941}
2942
2943static void
2944api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2945{
2946 struct coro *coro = SvSTATE (coro_sv);
2947
2948 if (SvSTATE_current == coro)
2949 if (enter)
2950 enter (aTHX_ enter_arg);
2951
2952 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2953 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2954}
2955
2956static void
2957api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2958{
2959 struct coro *coro = SvSTATE (coro_sv);
2960
2961 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2962 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2963}
2964
2965static void
2966savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2967{
2968 struct coro *coro = SvSTATE_current;
2969
2970 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2971}
2972
2973static void
2974savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2975{
2976 struct coro *coro = SvSTATE_current;
2977
2978 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2979}
2980
2981static void
2982api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2983{
2984 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2985
2986 /* this ought to be much cheaper than malloc + a single destructor call */
2987 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2988 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2989}
2990
1694/*****************************************************************************/ 2991/*****************************************************************************/
1695/* PerlIO::cede */ 2992/* PerlIO::cede */
1696 2993
1697typedef struct 2994typedef struct
1698{ 2995{
1699 PerlIOBuf base; 2996 PerlIOBuf base;
1700 NV next, every; 2997 NV next, every;
1701} PerlIOCede; 2998} PerlIOCede;
1702 2999
1703static IV 3000static IV ecb_cold
1704PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 3001PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1705{ 3002{
1706 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3003 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1707 3004
1708 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3005 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1709 self->next = nvtime () + self->every; 3006 self->next = nvtime () + self->every;
1710 3007
1711 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3008 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1712} 3009}
1713 3010
1714static SV * 3011static SV * ecb_cold
1715PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3012PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1716{ 3013{
1717 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3014 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1718 3015
1719 return newSVnv (self->every); 3016 return newSVnv (self->every);
… …
1765 PerlIOBuf_get_cnt, 3062 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 3063 PerlIOBuf_set_ptrcnt,
1767}; 3064};
1768 3065
1769/*****************************************************************************/ 3066/*****************************************************************************/
3067/* Coro::Semaphore & Coro::Signal */
1770 3068
1771static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1772static const CV *slf_cv;
1773static SV *slf_arg0;
1774static SV *slf_arg1;
1775static SV *slf_arg2;
1776static I32 slf_ax; /* top of stack, for restore */
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP * 3069static SV *
1782pp_restore (pTHX) 3070coro_waitarray_new (pTHX_ int count)
1783{ 3071{
1784 SV **SP = PL_stack_base + slf_ax; 3072 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3073 AV *av = newAV ();
3074 SV **ary;
1785 3075
1786 PUSHMARK (SP); 3076 /* unfortunately, building manually saves memory */
1787 3077 Newx (ary, 2, SV *);
1788 EXTEND (SP, 3); 3078 AvALLOC (av) = ary;
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 3079#if PERL_VERSION_ATLEAST (5,10,0)
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); 3080 AvARRAY (av) = ary;
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2)); 3081#else
1792 PUSHs ((SV *)CvGV (slf_cv)); 3082 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
1793 3083 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
1794 RETURNOP (slf_restore.op_first); 3084 SvPVX ((SV *)av) = (char *)ary;
1795}
1796
1797static void
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 {
1928 dSP;
1929 SV **bot = PL_stack_base + checkmark;
1930 int gimme = GIMME_V;
1931
1932 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1933
1934 /* make sure we put something on the stack in scalar context */
1935 if (gimme == G_SCALAR)
1936 {
1937 if (sp == bot)
1938 XPUSHs (&PL_sv_undef);
1939
1940 SP = bot + 1;
1941 }
1942
1943 PUTBACK;
1944 }
1945
1946 {
1947 struct coro *coro = SvSTATE_current;
1948
1949 if (expect_false (coro->throw))
1950 {
1951 SV *exception = sv_2mortal (coro->throw);
1952
1953 coro->throw = 0;
1954 sv_setsv (ERRSV, exception);
1955 croak (0);
1956 }
1957 }
1958
1959 return NORMAL;
1960}
1961
1962static void
1963api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1964{
1965 SV **arg = PL_stack_base + ax;
1966 int items = PL_stack_sp - arg + 1;
1967
1968 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1969
1970 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1971 && PL_op->op_ppaddr != pp_slf)
1972 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1973
1974#if 0
1975 if (items > 3)
1976 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1977#endif 3085#endif
3086 AvMAX (av) = 1;
3087 AvFILLp (av) = 0;
3088 ary [0] = newSViv (count);
1978 3089
1979 CvFLAGS (cv) |= CVf_SLF; 3090 return newRV_noinc ((SV *)av);
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_CUSTOM;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1992 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1993 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1994 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1995
1996 PL_op->op_ppaddr = pp_slf;
1997 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1998
1999 PL_op = (OP *)&slf_restore;
2000} 3091}
2001 3092
2002/*****************************************************************************/ 3093/* semaphore */
2003 3094
2004static void 3095static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 3096coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{ 3097{
2007 SV *count_sv = AvARRAY (av)[0]; 3098 SV *count_sv = AvARRAY (av)[0];
… …
2019 AvARRAY (av)[0] = AvARRAY (av)[1]; 3110 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv; 3111 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av); 3112 cb = av_shift (av);
2022 3113
2023 if (SvOBJECT (cb)) 3114 if (SvOBJECT (cb))
3115 {
2024 api_ready (aTHX_ cb); 3116 api_ready (aTHX_ cb);
2025 else 3117 --count;
2026 croak ("callbacks not yet supported"); 3118 }
3119 else if (SvTYPE (cb) == SVt_PVCV)
3120 {
3121 dSP;
3122 PUSHMARK (SP);
3123 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3124 PUTBACK;
3125 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3126 }
2027 3127
2028 SvREFCNT_dec (cb); 3128 SvREFCNT_dec_NN (cb);
2029
2030 --count;
2031 } 3129 }
2032} 3130}
2033 3131
2034static void 3132static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3133coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2036{ 3134{
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3135 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3136 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2039} 3137}
2040 3138
2041static int 3139static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3140slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2043{ 3141{
2044 AV *av = (AV *)frame->data; 3142 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0]; 3143 SV *count_sv = AvARRAY (av)[0];
3144 SV *coro_hv = SvRV (coro_current);
2046 3145
3146 frame->destroy = 0;
3147
3148 /* if we are about to throw, don't actually acquire the lock, just throw */
3149 if (ecb_expect_false (CORO_THROW))
3150 {
3151 /* we still might be responsible for the semaphore, so wake up others */
3152 coro_semaphore_adjust (aTHX_ av, 0);
3153
3154 return 0;
3155 }
2047 if (SvIVX (count_sv) > 0) 3156 else if (SvIVX (count_sv) > 0)
2048 { 3157 {
2049 SvSTATE_current->on_destroy = 0; 3158 if (acquire)
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3159 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3160 else
3161 coro_semaphore_adjust (aTHX_ av, 0);
3162
2051 return 0; 3163 return 0;
2052 } 3164 }
2053 else 3165 else
2054 { 3166 {
2055 int i; 3167 int i;
2056 /* if we were woken up but can't down, we look through the whole */ 3168 /* if we were woken up but can't down, we look through the whole */
2057 /* waiters list and only add us if we aren't in there already */ 3169 /* waiters list and only add us if we aren't in there already */
2058 /* this avoids some degenerate memory usage cases */ 3170 /* this avoids some degenerate memory usage cases */
2059 3171 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2060 for (i = 1; i <= AvFILLp (av); ++i)
2061 if (AvARRAY (av)[i] == SvRV (coro_current)) 3172 if (AvARRAY (av)[i] == coro_hv)
2062 return 1; 3173 return 1;
2063 3174
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3175 av_push (av, SvREFCNT_inc (coro_hv));
2065 return 1; 3176 return 1;
2066 } 3177 }
2067} 3178}
2068 3179
2069static void 3180static int
3181slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3182{
3183 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3184}
3185
3186static int
3187slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3188{
3189 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3190}
3191
3192static void
2070slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3193slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2071{ 3194{
2072 AV *av = (AV *)SvRV (arg [0]); 3195 AV *av = (AV *)SvRV (arg [0]);
2073 3196
2074 if (SvIVX (AvARRAY (av)[0]) > 0) 3197 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 { 3198 {
2076 frame->data = (void *)av; 3199 frame->data = (void *)av;
2077 frame->prepare = prepare_nop; 3200 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2079 } 3201 }
2080 else 3202 else
2081 { 3203 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3204 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083 3205
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3206 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule; 3207 frame->prepare = prepare_schedule;
2086
2087 /* to avoid race conditions when a woken-up coro gets terminated */ 3208 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3209 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 assert (!SvSTATE_current->on_destroy);//D
2090 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3210 frame->destroy = coro_semaphore_destroy;
2091 } 3211 }
3212}
2092 3213
3214static void
3215slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3216{
3217 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2093 frame->check = slf_check_semaphore_down; 3218 frame->check = slf_check_semaphore_down;
3219}
2094 3220
3221static void
3222slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3223{
3224 if (items >= 2)
3225 {
3226 /* callback form */
3227 AV *av = (AV *)SvRV (arg [0]);
3228 SV *cb_cv = s_get_cv_croak (arg [1]);
3229
3230 av_push (av, SvREFCNT_inc_NN (cb_cv));
3231
3232 if (SvIVX (AvARRAY (av)[0]) > 0)
3233 coro_semaphore_adjust (aTHX_ av, 0);
3234
3235 frame->prepare = prepare_nop;
3236 frame->check = slf_check_nop;
3237 }
3238 else
3239 {
3240 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3241 frame->check = slf_check_semaphore_wait;
3242 }
3243}
3244
3245/* signal */
3246
3247static void
3248coro_signal_wake (pTHX_ AV *av, int count)
3249{
3250 SvIVX (AvARRAY (av)[0]) = 0;
3251
3252 /* now signal count waiters */
3253 while (count > 0 && AvFILLp (av) > 0)
3254 {
3255 SV *cb;
3256
3257 /* swap first two elements so we can shift a waiter */
3258 cb = AvARRAY (av)[0];
3259 AvARRAY (av)[0] = AvARRAY (av)[1];
3260 AvARRAY (av)[1] = cb;
3261
3262 cb = av_shift (av);
3263
3264 if (SvTYPE (cb) == SVt_PVCV)
3265 {
3266 dSP;
3267 PUSHMARK (SP);
3268 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3269 PUTBACK;
3270 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3271 }
3272 else
3273 {
3274 api_ready (aTHX_ cb);
3275 sv_setiv (cb, 0); /* signal waiter */
3276 }
3277
3278 SvREFCNT_dec_NN (cb);
3279
3280 --count;
3281 }
3282}
3283
3284static int
3285slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3286{
3287 /* if we are about to throw, also stop waiting */
3288 return SvROK ((SV *)frame->data) && !CORO_THROW;
3289}
3290
3291static void
3292slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3293{
3294 AV *av = (AV *)SvRV (arg [0]);
3295
3296 if (items >= 2)
3297 {
3298 SV *cb_cv = s_get_cv_croak (arg [1]);
3299 av_push (av, SvREFCNT_inc_NN (cb_cv));
3300
3301 if (SvIVX (AvARRAY (av)[0]))
3302 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3303
3304 frame->prepare = prepare_nop;
3305 frame->check = slf_check_nop;
3306 }
3307 else if (SvIVX (AvARRAY (av)[0]))
3308 {
3309 SvIVX (AvARRAY (av)[0]) = 0;
3310 frame->prepare = prepare_nop;
3311 frame->check = slf_check_nop;
3312 }
3313 else
3314 {
3315 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3316
3317 av_push (av, waiter);
3318
3319 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3320 frame->prepare = prepare_schedule;
3321 frame->check = slf_check_signal_wait;
3322 }
2095} 3323}
2096 3324
2097/*****************************************************************************/ 3325/*****************************************************************************/
3326/* Coro::AIO */
2098 3327
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3328#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2100 3329
2101/* create a closure from XS, returns a code reference */ 3330/* helper storage struct */
2102/* the arg can be accessed via GENSUB_ARG from the callback */ 3331struct io_state
2103/* the callback must use dXSARGS/XSRETURN */ 3332{
3333 int errorno;
3334 I32 laststype; /* U16 in 5.10.0 */
3335 int laststatval;
3336 Stat_t statcache;
3337};
3338
3339static void
3340coro_aio_callback (pTHX_ CV *cv)
3341{
3342 dXSARGS;
3343 AV *state = (AV *)S_GENSUB_ARG;
3344 SV *coro = av_pop (state);
3345 SV *data_sv = newSV (sizeof (struct io_state));
3346
3347 av_extend (state, items - 1);
3348
3349 sv_upgrade (data_sv, SVt_PV);
3350 SvCUR_set (data_sv, sizeof (struct io_state));
3351 SvPOK_only (data_sv);
3352
3353 {
3354 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3355
3356 data->errorno = errno;
3357 data->laststype = PL_laststype;
3358 data->laststatval = PL_laststatval;
3359 data->statcache = PL_statcache;
3360 }
3361
3362 /* now build the result vector out of all the parameters and the data_sv */
3363 {
3364 int i;
3365
3366 for (i = 0; i < items; ++i)
3367 av_push (state, SvREFCNT_inc_NN (ST (i)));
3368 }
3369
3370 av_push (state, data_sv);
3371
3372 api_ready (aTHX_ coro);
3373 SvREFCNT_dec_NN (coro);
3374 SvREFCNT_dec_NN ((AV *)state);
3375}
3376
3377static int
3378slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3379{
3380 AV *state = (AV *)frame->data;
3381
3382 /* if we are about to throw, return early */
3383 /* this does not cancel the aio request, but at least */
3384 /* it quickly returns */
3385 if (CORO_THROW)
3386 return 0;
3387
3388 /* one element that is an RV? repeat! */
3389 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3390 return 1;
3391
3392 /* restore status */
3393 {
3394 SV *data_sv = av_pop (state);
3395 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3396
3397 errno = data->errorno;
3398 PL_laststype = data->laststype;
3399 PL_laststatval = data->laststatval;
3400 PL_statcache = data->statcache;
3401
3402 SvREFCNT_dec_NN (data_sv);
3403 }
3404
3405 /* push result values */
3406 {
3407 dSP;
3408 int i;
3409
3410 EXTEND (SP, AvFILLp (state) + 1);
3411 for (i = 0; i <= AvFILLp (state); ++i)
3412 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3413
3414 PUTBACK;
3415 }
3416
3417 return 0;
3418}
3419
3420static void
3421slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3422{
3423 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3424 SV *coro_hv = SvRV (coro_current);
3425 struct coro *coro = SvSTATE_hv (coro_hv);
3426
3427 /* put our coroutine id on the state arg */
3428 av_push (state, SvREFCNT_inc_NN (coro_hv));
3429
3430 /* first see whether we have a non-zero priority and set it as AIO prio */
3431 if (coro->prio)
3432 {
3433 dSP;
3434
3435 static SV *prio_cv;
3436 static SV *prio_sv;
3437
3438 if (ecb_expect_false (!prio_cv))
3439 {
3440 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3441 prio_sv = newSViv (0);
3442 }
3443
3444 PUSHMARK (SP);
3445 sv_setiv (prio_sv, coro->prio);
3446 XPUSHs (prio_sv);
3447
3448 PUTBACK;
3449 call_sv (prio_cv, G_VOID | G_DISCARD);
3450 }
3451
3452 /* now call the original request */
3453 {
3454 dSP;
3455 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3456 int i;
3457
3458 PUSHMARK (SP);
3459
3460 /* first push all args to the stack */
3461 EXTEND (SP, items + 1);
3462
3463 for (i = 0; i < items; ++i)
3464 PUSHs (arg [i]);
3465
3466 /* now push the callback closure */
3467 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3468
3469 /* now call the AIO function - we assume our request is uncancelable */
3470 PUTBACK;
3471 call_sv ((SV *)req, G_VOID | G_DISCARD);
3472 }
3473
3474 /* now that the request is going, we loop till we have a result */
3475 frame->data = (void *)state;
3476 frame->prepare = prepare_schedule;
3477 frame->check = slf_check_aio_req;
3478}
3479
3480static void
3481coro_aio_req_xs (pTHX_ CV *cv)
3482{
3483 dXSARGS;
3484
3485 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3486
3487 XSRETURN_EMPTY;
3488}
3489
3490/*****************************************************************************/
3491
3492#if CORO_CLONE
3493# include "clone.c"
3494#endif
3495
3496/*****************************************************************************/
3497
2104static SV * 3498static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3499coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2106{ 3500{
2107 CV *cv = (CV *)NEWSV (0, 0); 3501 SV *coro_sv;
3502 struct coro *coro;
3503 MAGIC *mg;
3504 HV *hv;
3505 SV *cb;
3506 int i;
2108 3507
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 3508 if (argc > 0)
3509 {
3510 cb = s_get_cv_croak (argv [0]);
2110 3511
2111 CvANON_on (cv); 3512 if (!is_coro)
2112 CvISXSUB_on (cv); 3513 {
2113 CvXSUB (cv) = xsub; 3514 if (CvISXSUB (cb))
2114 GENSUB_ARG = arg; 3515 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2115 3516
2116 return newRV_noinc ((SV *)cv); 3517 if (!CvROOT (cb))
2117} 3518 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3519 }
3520 }
2118 3521
2119/*****************************************************************************/ 3522 Newz (0, coro, 1, struct coro);
3523 coro->args = newAV ();
3524 coro->flags = CF_NEW;
3525
3526 if (coro_first) coro_first->prev = coro;
3527 coro->next = coro_first;
3528 coro_first = coro;
3529
3530 coro->hv = hv = newHV ();
3531 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3532 mg->mg_flags |= MGf_DUP;
3533 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3534
3535 if (argc > 0)
3536 {
3537 av_extend (coro->args, argc + is_coro - 1);
3538
3539 if (is_coro)
3540 {
3541 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3542 cb = (SV *)cv_coro_run;
3543 }
3544
3545 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3546
3547 for (i = 1; i < argc; i++)
3548 av_push (coro->args, newSVsv (argv [i]));
3549 }
3550
3551 return coro_sv;
3552}
3553
3554#ifndef __cplusplus
3555ecb_cold XS(boot_Coro__State);
3556#endif
3557
3558#if CORO_JIT
3559
3560static void ecb_noinline ecb_cold
3561pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3562{
3563 dSP;
3564 AV *av = newAV ();
3565
3566 av_store (av, 3, newSVuv (d));
3567 av_store (av, 2, newSVuv (c));
3568 av_store (av, 1, newSVuv (b));
3569 av_store (av, 0, newSVuv (a));
3570
3571 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3572
3573 PUTBACK;
3574}
3575
3576static void ecb_noinline ecb_cold
3577jit_init (pTHX)
3578{
3579 dSP;
3580 SV *load, *save;
3581 char *map_base;
3582 char *load_ptr, *save_ptr;
3583 STRLEN load_len, save_len, map_len;
3584 int count;
3585
3586 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3587
3588 PUSHMARK (SP);
3589 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3590 #include "state.h"
3591 count = call_pv ("Coro::State::_jit", G_ARRAY);
3592 SPAGAIN;
3593
3594 save = POPs; save_ptr = SvPVbyte (save, save_len);
3595 load = POPs; load_ptr = SvPVbyte (load, load_len);
3596
3597 map_len = load_len + save_len + 16;
3598
3599 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3600
3601 if (map_base == (char *)MAP_FAILED)
3602 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3603
3604 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3605
3606 load_perl_slots = (load_save_perl_slots_type)map_base;
3607 memcpy (map_base, load_ptr, load_len);
3608
3609 map_base += (load_len + 15) & ~15;
3610
3611 save_perl_slots = (load_save_perl_slots_type)map_base;
3612 memcpy (map_base, save_ptr, save_len);
3613
3614 /* we are good citizens and try to make the page read-only, so the evil evil */
3615 /* hackers might have it a bit more difficult */
3616 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3617
3618 PUTBACK;
3619 eval_pv ("undef &Coro::State::_jit", 1);
3620}
3621
3622#endif
2120 3623
2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3624MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2122 3625
2123PROTOTYPES: DISABLE 3626PROTOTYPES: DISABLE
2124 3627
2125BOOT: 3628BOOT:
2126{ 3629{
3630#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3631#include "state.h"
2127#ifdef USE_ITHREADS 3632#ifdef USE_ITHREADS
2128# if CORO_PTHREAD 3633# if CORO_PTHREAD
2129 coro_thx = PERL_GET_CONTEXT; 3634 coro_thx = PERL_GET_CONTEXT;
2130# endif 3635# endif
2131#endif 3636#endif
2132 BOOT_PAGESIZE; 3637 /* perl defines these to check for existance first, but why it doesn't */
3638 /* just create them one at init time is not clear to me, except for */
3639 /* programs trying to delete them, but... */
3640 /* anyway, we declare this as invalid and make sure they are initialised here */
3641 DEFSV;
3642 ERRSV;
3643
3644 cctx_current = cctx_new_empty ();
2133 3645
2134 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3646 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2135 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3647 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2136 3648
2137 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3649 {
2138 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3650 /*
2139 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3651 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3652 * by coro_sig_vtbl in hash values.
3653 */
3654 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3655
3656 /* this only works if perl doesn't have a vtbl for %SIG */
3657 assert (!mg->mg_virtual);
3658
3659 /*
3660 * The irony is that the perl API itself asserts that mg_virtual
3661 * must be non-const, yet perl5porters insisted on marking their
3662 * vtbls as read-only, just to thwart perl modules from patching
3663 * them.
3664 */
3665 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3666 mg->mg_flags |= MGf_COPY;
3667
3668 coro_sigelem_vtbl = PL_vtbl_sigelem;
3669 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3670 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3671 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3672 }
2140 3673
2141 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2142 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3674 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2143 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3675 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2144 3676
2145 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3677 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
2146 3678
… …
2157 3689
2158 { 3690 {
2159 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3691 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2160 3692
2161 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3693 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2162 hv_store_ent (PL_custom_op_names, slf, 3694 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2163 newSVpv ("coro_slf", 0), 0);
2164 3695
2165 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3696 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2166 hv_store_ent (PL_custom_op_descs, slf, 3697 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2167 newSVpv ("coro schedule like function", 0), 0);
2168 } 3698 }
2169 3699
2170 coroapi.ver = CORO_API_VERSION; 3700 coroapi.ver = CORO_API_VERSION;
2171 coroapi.rev = CORO_API_REVISION; 3701 coroapi.rev = CORO_API_REVISION;
2172 3702
… …
2177 coroapi.prepare_nop = prepare_nop; 3707 coroapi.prepare_nop = prepare_nop;
2178 coroapi.prepare_schedule = prepare_schedule; 3708 coroapi.prepare_schedule = prepare_schedule;
2179 coroapi.prepare_cede = prepare_cede; 3709 coroapi.prepare_cede = prepare_cede;
2180 coroapi.prepare_cede_notself = prepare_cede_notself; 3710 coroapi.prepare_cede_notself = prepare_cede_notself;
2181 3711
2182 { 3712 time_init (aTHX);
2183 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2184 3713
2185 if (!svp) croak ("Time::HiRes is required");
2186 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2187
2188 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2189 }
2190
2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3714 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3715#if CORO_JIT
3716 PUTBACK;
3717 jit_init (aTHX);
3718 SPAGAIN;
3719#endif
2192} 3720}
2193 3721
2194SV * 3722SV *
2195new (char *klass, ...) 3723new (SV *klass, ...)
3724 ALIAS:
3725 Coro::new = 1
2196 CODE: 3726 CODE:
2197{ 3727 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2198 struct coro *coro; 3728 OUTPUT:
2199 MAGIC *mg;
2200 HV *hv;
2201 int i;
2202
2203 Newz (0, coro, 1, struct coro);
2204 coro->args = newAV ();
2205 coro->flags = CF_NEW;
2206
2207 if (coro_first) coro_first->prev = coro;
2208 coro->next = coro_first;
2209 coro_first = coro;
2210
2211 coro->hv = hv = newHV ();
2212 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2213 mg->mg_flags |= MGf_DUP;
2214 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2215
2216 av_extend (coro->args, items - 1);
2217 for (i = 1; i < items; i++)
2218 av_push (coro->args, newSVsv (ST (i)));
2219}
2220 OUTPUT:
2221 RETVAL 3729 RETVAL
2222
2223void
2224_set_stacklevel (...)
2225 CODE:
2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2227 3730
2228void 3731void
2229transfer (...) 3732transfer (...)
2230 PROTOTYPE: $$ 3733 PROTOTYPE: $$
2231 CODE: 3734 CODE:
2232 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3735 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2233 3736
2234bool 3737SV *
2235_destroy (SV *coro_sv) 3738clone (Coro::State coro)
2236 CODE: 3739 CODE:
2237 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3740{
3741#if CORO_CLONE
3742 struct coro *ncoro = coro_clone (aTHX_ coro);
3743 MAGIC *mg;
3744 /* TODO: too much duplication */
3745 ncoro->hv = newHV ();
3746 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3747 mg->mg_flags |= MGf_DUP;
3748 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3749#else
3750 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3751#endif
3752}
2238 OUTPUT: 3753 OUTPUT:
2239 RETVAL 3754 RETVAL
2240
2241void
2242_exit (int code)
2243 PROTOTYPE: $
2244 CODE:
2245 _exit (code);
2246 3755
2247int 3756int
2248cctx_stacksize (int new_stacksize = 0) 3757cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$ 3758 PROTOTYPE: ;$
2250 CODE: 3759 CODE:
… …
2286void 3795void
2287list () 3796list ()
2288 PROTOTYPE: 3797 PROTOTYPE:
2289 PPCODE: 3798 PPCODE:
2290{ 3799{
2291 struct coro *coro; 3800 struct coro *coro;
2292 for (coro = coro_first; coro; coro = coro->next) 3801 for (coro = coro_first; coro; coro = coro->next)
2293 if (coro->hv) 3802 if (coro->hv)
2294 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3803 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2295} 3804}
2296 3805
… …
2300 eval = 1 3809 eval = 1
2301 CODE: 3810 CODE:
2302{ 3811{
2303 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3812 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2304 { 3813 {
2305 struct coro temp; 3814 struct coro *current = SvSTATE_current;
3815 struct CoroSLF slf_save;
2306 3816
2307 if (!(coro->flags & CF_RUNNING)) 3817 if (current != coro)
2308 { 3818 {
2309 PUTBACK; 3819 PUTBACK;
2310 save_perl (aTHX_ &temp); 3820 save_perl (aTHX_ current);
2311 load_perl (aTHX_ coro); 3821 load_perl (aTHX_ coro);
3822 /* the coro is most likely in an active SLF call.
3823 * while not strictly required (the code we execute is
3824 * not allowed to call any SLF functions), it's cleaner
3825 * to reinitialise the slf_frame and restore it later.
3826 * This might one day allow us to actually do SLF calls
3827 * from code executed here.
3828 */
3829 slf_save = slf_frame;
3830 slf_frame.prepare = 0;
3831 SPAGAIN;
2312 } 3832 }
2313 3833
2314 {
2315 dSP;
2316 ENTER;
2317 SAVETMPS;
2318 PUTBACK;
2319 PUSHSTACK; 3834 PUSHSTACK;
3835
2320 PUSHMARK (SP); 3836 PUSHMARK (SP);
3837 PUTBACK;
2321 3838
2322 if (ix) 3839 if (ix)
2323 eval_sv (coderef, 0); 3840 eval_sv (coderef, 0);
2324 else 3841 else
2325 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3842 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2326 3843
2327 POPSTACK; 3844 POPSTACK;
2328 SPAGAIN; 3845 SPAGAIN;
2329 FREETMPS;
2330 LEAVE;
2331 PUTBACK;
2332 }
2333 3846
2334 if (!(coro->flags & CF_RUNNING)) 3847 if (current != coro)
2335 { 3848 {
3849 PUTBACK;
3850 slf_frame = slf_save;
2336 save_perl (aTHX_ coro); 3851 save_perl (aTHX_ coro);
2337 load_perl (aTHX_ &temp); 3852 load_perl (aTHX_ current);
2338 SPAGAIN; 3853 SPAGAIN;
2339 } 3854 }
2340 } 3855 }
2341} 3856}
2342 3857
… …
2345 PROTOTYPE: $ 3860 PROTOTYPE: $
2346 ALIAS: 3861 ALIAS:
2347 is_ready = CF_READY 3862 is_ready = CF_READY
2348 is_running = CF_RUNNING 3863 is_running = CF_RUNNING
2349 is_new = CF_NEW 3864 is_new = CF_NEW
2350 is_destroyed = CF_DESTROYED 3865 is_destroyed = CF_ZOMBIE
3866 is_zombie = CF_ZOMBIE
3867 is_suspended = CF_SUSPENDED
2351 CODE: 3868 CODE:
2352 RETVAL = boolSV (coro->flags & ix); 3869 RETVAL = boolSV (coro->flags & ix);
2353 OUTPUT: 3870 OUTPUT:
2354 RETVAL 3871 RETVAL
2355 3872
2356void 3873void
2357throw (Coro::State self, SV *throw = &PL_sv_undef) 3874throw (SV *self, SV *exception = &PL_sv_undef)
2358 PROTOTYPE: $;$ 3875 PROTOTYPE: $;$
2359 CODE: 3876 CODE:
3877{
3878 struct coro *coro = SvSTATE (self);
3879 struct coro *current = SvSTATE_current;
3880 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2360 SvREFCNT_dec (self->throw); 3881 SvREFCNT_dec (*exceptionp);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3882 SvGETMAGIC (exception);
3883 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3884
3885 api_ready (aTHX_ self);
3886}
2362 3887
2363void 3888void
2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3889api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$ 3890 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags 3891 C_ARGS: aTHX_ coro, flags
2367 3892
2368SV * 3893SV *
2369has_cctx (Coro::State coro) 3894has_cctx (Coro::State coro)
2370 PROTOTYPE: $ 3895 PROTOTYPE: $
2371 CODE: 3896 CODE:
2372 RETVAL = boolSV (!!coro->cctx); 3897 /* maybe manage the running flag differently */
3898 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2373 OUTPUT: 3899 OUTPUT:
2374 RETVAL 3900 RETVAL
2375 3901
2376int 3902int
2377is_traced (Coro::State coro) 3903is_traced (Coro::State coro)
… …
2397 3923
2398void 3924void
2399force_cctx () 3925force_cctx ()
2400 PROTOTYPE: 3926 PROTOTYPE:
2401 CODE: 3927 CODE:
2402 SvSTATE_current->cctx->idle_sp = 0; 3928 cctx_current->idle_sp = 0;
2403 3929
2404void 3930void
2405swap_defsv (Coro::State self) 3931swap_defsv (Coro::State self)
2406 PROTOTYPE: $ 3932 PROTOTYPE: $
2407 ALIAS: 3933 ALIAS:
… …
2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3941 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2416 3942
2417 SV *tmp = *src; *src = *dst; *dst = tmp; 3943 SV *tmp = *src; *src = *dst; *dst = tmp;
2418 } 3944 }
2419 3945
3946void
3947cancel (Coro::State self)
3948 CODE:
3949 coro_state_destroy (aTHX_ self);
3950
3951SV *
3952enable_times (int enabled = enable_times)
3953 CODE:
3954{
3955 RETVAL = boolSV (enable_times);
3956
3957 if (enabled != enable_times)
3958 {
3959 enable_times = enabled;
3960
3961 coro_times_update ();
3962 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3963 }
3964}
3965 OUTPUT:
3966 RETVAL
3967
3968void
3969times (Coro::State self)
3970 PPCODE:
3971{
3972 struct coro *current = SvSTATE (coro_current);
3973
3974 if (ecb_expect_false (current == self))
3975 {
3976 coro_times_update ();
3977 coro_times_add (SvSTATE (coro_current));
3978 }
3979
3980 EXTEND (SP, 2);
3981 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3982 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3983
3984 if (ecb_expect_false (current == self))
3985 coro_times_sub (SvSTATE (coro_current));
3986}
3987
3988void
3989swap_sv (Coro::State coro, SV *sva, SV *svb)
3990 CODE:
3991{
3992 struct coro *current = SvSTATE_current;
3993 AV *swap_sv;
3994 int i;
3995
3996 sva = SvRV (sva);
3997 svb = SvRV (svb);
3998
3999 if (current == coro)
4000 SWAP_SVS_LEAVE (current);
4001
4002 if (!coro->swap_sv)
4003 coro->swap_sv = newAV ();
4004
4005 swap_sv = coro->swap_sv;
4006
4007 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
4008 {
4009 SV *a = AvARRAY (swap_sv)[i ];
4010 SV *b = AvARRAY (swap_sv)[i + 1];
4011
4012 if (a == sva && b == svb)
4013 {
4014 SvREFCNT_dec_NN (a);
4015 SvREFCNT_dec_NN (b);
4016
4017 for (; i <= AvFILLp (swap_sv) - 2; i++)
4018 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4019
4020 AvFILLp (swap_sv) -= 2;
4021
4022 goto removed;
4023 }
4024 }
4025
4026 av_push (swap_sv, SvREFCNT_inc_NN (sva));
4027 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4028
4029 removed:
4030
4031 if (current == coro)
4032 SWAP_SVS_ENTER (current);
4033}
4034
4035
2420MODULE = Coro::State PACKAGE = Coro 4036MODULE = Coro::State PACKAGE = Coro
2421 4037
2422BOOT: 4038BOOT:
2423{ 4039{
2424 int i; 4040 if (SVt_LAST > 32)
4041 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2425 4042
2426 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2427 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4043 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2428 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4044 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2429 4045 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2430 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 4046 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2431 SvREADONLY_on (coro_current); 4047 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
4048 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
4049 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
4050 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
4051
4052 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
4053 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
4054 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
4055 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2432 4056
2433 coro_stash = gv_stashpv ("Coro", TRUE); 4057 coro_stash = gv_stashpv ("Coro", TRUE);
2434 4058
2435 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4059 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2436 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4060 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2437 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4061 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2438 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4062 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2439 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4063 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2440 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4064 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2441
2442 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2443 coro_ready[i] = newAV ();
2444 4065
2445 { 4066 {
2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4067 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2447 4068
2448 coroapi.schedule = api_schedule; 4069 coroapi.schedule = api_schedule;
4070 coroapi.schedule_to = api_schedule_to;
2449 coroapi.cede = api_cede; 4071 coroapi.cede = api_cede;
2450 coroapi.cede_notself = api_cede_notself; 4072 coroapi.cede_notself = api_cede_notself;
2451 coroapi.ready = api_ready; 4073 coroapi.ready = api_ready;
2452 coroapi.is_ready = api_is_ready; 4074 coroapi.is_ready = api_is_ready;
2453 coroapi.nready = coro_nready; 4075 coroapi.nready = coro_nready;
2454 coroapi.current = coro_current; 4076 coroapi.current = coro_current;
2455 4077
4078 coroapi.enterleave_hook = api_enterleave_hook;
4079 coroapi.enterleave_unhook = api_enterleave_unhook;
4080 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4081
2456 GCoroAPI = &coroapi; 4082 /*GCoroAPI = &coroapi;*/
2457 sv_setiv (sv, (IV)&coroapi); 4083 sv_setiv (sv, PTR2IV (&coroapi));
2458 SvREADONLY_on (sv); 4084 SvREADONLY_on (sv);
2459 } 4085 }
2460} 4086}
4087
4088SV *
4089async (...)
4090 PROTOTYPE: &@
4091 CODE:
4092 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4093 api_ready (aTHX_ RETVAL);
4094 OUTPUT:
4095 RETVAL
4096
4097void
4098_destroy (Coro::State coro)
4099 CODE:
4100 /* used by the manager thread */
4101 coro_state_destroy (aTHX_ coro);
4102
4103void
4104on_destroy (Coro::State coro, SV *cb)
4105 CODE:
4106 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4107
4108void
4109join (...)
4110 CODE:
4111 CORO_EXECUTE_SLF_XS (slf_init_join);
4112
4113void
4114terminate (...)
4115 CODE:
4116 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4117
4118void
4119cancel (...)
4120 CODE:
4121 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4122
4123int
4124safe_cancel (Coro::State self, ...)
4125 C_ARGS: aTHX_ self, &ST (1), items - 1
2461 4126
2462void 4127void
2463schedule (...) 4128schedule (...)
2464 CODE: 4129 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4130 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2466 4131
2467void 4132void
4133schedule_to (...)
4134 CODE:
4135 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4136
4137void
4138cede_to (...)
4139 CODE:
4140 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
4141
4142void
2468cede (...) 4143cede (...)
2469 CODE: 4144 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede); 4145 CORO_EXECUTE_SLF_XS (slf_init_cede);
2471 4146
2472void 4147void
… …
2476 4151
2477void 4152void
2478_set_current (SV *current) 4153_set_current (SV *current)
2479 PROTOTYPE: $ 4154 PROTOTYPE: $
2480 CODE: 4155 CODE:
2481 SvREFCNT_dec (SvRV (coro_current)); 4156 SvREFCNT_dec_NN (SvRV (coro_current));
2482 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4157 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2483 4158
2484void 4159void
2485_set_readyhook (SV *hook) 4160_set_readyhook (SV *hook)
2486 PROTOTYPE: $ 4161 PROTOTYPE: $
2487 CODE: 4162 CODE:
2488 SvREFCNT_dec (coro_readyhook); 4163 SvREFCNT_dec (coro_readyhook);
4164 SvGETMAGIC (hook);
4165 if (SvOK (hook))
4166 {
2489 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4167 coro_readyhook = newSVsv (hook);
4168 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4169 }
4170 else
4171 {
4172 coro_readyhook = 0;
4173 CORO_READYHOOK = 0;
4174 }
2490 4175
2491int 4176int
2492prio (Coro::State coro, int newprio = 0) 4177prio (Coro::State coro, int newprio = 0)
2493 PROTOTYPE: $;$ 4178 PROTOTYPE: $;$
2494 ALIAS: 4179 ALIAS:
… …
2500 if (items > 1) 4185 if (items > 1)
2501 { 4186 {
2502 if (ix) 4187 if (ix)
2503 newprio = coro->prio - newprio; 4188 newprio = coro->prio - newprio;
2504 4189
2505 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4190 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2506 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4191 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2507 4192
2508 coro->prio = newprio; 4193 coro->prio = newprio;
2509 } 4194 }
2510} 4195}
2511 OUTPUT: 4196 OUTPUT:
… …
2525 CODE: 4210 CODE:
2526 RETVAL = coro_nready; 4211 RETVAL = coro_nready;
2527 OUTPUT: 4212 OUTPUT:
2528 RETVAL 4213 RETVAL
2529 4214
2530# for async_pool speedup
2531void 4215void
2532_pool_1 (SV *cb) 4216suspend (Coro::State self)
4217 PROTOTYPE: $
2533 CODE: 4218 CODE:
2534{ 4219 self->flags |= CF_SUSPENDED;
2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
2537 AV *defav = GvAV (PL_defgv);
2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2539 AV *invoke_av;
2540 int i, len;
2541 4220
2542 if (!invoke) 4221void
4222resume (Coro::State self)
4223 PROTOTYPE: $
4224 CODE:
4225 self->flags &= ~CF_SUSPENDED;
4226
4227void
4228_pool_handler (...)
4229 CODE:
4230 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4231
4232void
4233async_pool (SV *cv, ...)
4234 PROTOTYPE: &@
4235 PPCODE:
4236{
4237 HV *hv = (HV *)av_pop (av_async_pool);
4238 AV *av = newAV ();
4239 SV *cb = ST (0);
4240 int i;
4241
4242 av_extend (av, items - 2);
4243 for (i = 1; i < items; ++i)
4244 av_push (av, SvREFCNT_inc_NN (ST (i)));
4245
4246 if ((SV *)hv == &PL_sv_undef)
2543 { 4247 {
2544 SV *old = PL_diehook; 4248 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2545 PL_diehook = 0; 4249 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2546 SvREFCNT_dec (old); 4250 SvREFCNT_dec_NN (sv);
2547 croak ("\3async_pool terminate\2\n");
2548 } 4251 }
2549 4252
2550 SvREFCNT_dec (coro->saved_deffh);
2551 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2552
2553 hv_store (hv, "desc", sizeof ("desc") - 1,
2554 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2555
2556 invoke_av = (AV *)SvRV (invoke);
2557 len = av_len (invoke_av);
2558
2559 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2560
2561 if (len > 0)
2562 { 4253 {
2563 av_fill (defav, len - 1); 4254 struct coro *coro = SvSTATE_hv (hv);
2564 for (i = 0; i < len; ++i) 4255
2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4256 assert (!coro->invoke_cb);
4257 assert (!coro->invoke_av);
4258 coro->invoke_cb = SvREFCNT_inc (cb);
4259 coro->invoke_av = av;
2566 } 4260 }
4261
4262 api_ready (aTHX_ (SV *)hv);
4263
4264 if (GIMME_V != G_VOID)
4265 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4266 else
4267 SvREFCNT_dec_NN (hv);
2567} 4268}
4269
4270SV *
4271rouse_cb ()
4272 PROTOTYPE:
4273 CODE:
4274 RETVAL = coro_new_rouse_cb (aTHX);
4275 OUTPUT:
4276 RETVAL
2568 4277
2569void 4278void
2570_pool_2 (SV *cb) 4279rouse_wait (...)
4280 PROTOTYPE: ;$
4281 PPCODE:
4282 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4283
4284void
4285on_enter (SV *block)
4286 ALIAS:
4287 on_leave = 1
4288 PROTOTYPE: &
2571 CODE: 4289 CODE:
2572{ 4290{
2573 struct coro *coro = SvSTATE_current; 4291 struct coro *coro = SvSTATE_current;
4292 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2574 4293
2575 sv_setsv (cb, &PL_sv_undef); 4294 block = s_get_cv_croak (block);
2576 4295
2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4296 if (!*avp)
2578 coro->saved_deffh = 0;
2579
2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2582 {
2583 SV *old = PL_diehook;
2584 PL_diehook = 0;
2585 SvREFCNT_dec (old);
2586 croak ("\3async_pool terminate\2\n");
2587 }
2588
2589 av_clear (GvAV (PL_defgv));
2590 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2592
2593 coro->prio = 0;
2594
2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2596 api_trace (aTHX_ coro_current, 0);
2597
2598 av_push (av_async_pool, newSVsv (coro_current));
2599}
2600
2601
2602MODULE = Coro::State PACKAGE = Coro::AIO
2603
2604void
2605_get_state (SV *self)
2606 PROTOTYPE: $
2607 PPCODE:
2608{
2609 AV *defav = GvAV (PL_defgv);
2610 AV *av = newAV (); 4297 *avp = newAV ();
2611 int i;
2612 SV *data_sv = newSV (sizeof (struct io_state));
2613 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616 4298
2617 data->errorno = errno; 4299 av_push (*avp, SvREFCNT_inc (block));
2618 data->laststype = PL_laststype;
2619 data->laststatval = PL_laststatval;
2620 data->statcache = PL_statcache;
2621 4300
2622 av_extend (av, AvFILLp (defav) + 1 + 1); 4301 if (!ix)
4302 on_enterleave_call (aTHX_ block);
2623 4303
2624 for (i = 0; i <= AvFILLp (defav); ++i) 4304 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2625 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4305 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2626 4306 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2627 av_push (av, data_sv);
2628
2629 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2630
2631 api_ready (aTHX_ self);
2632}
2633
2634void
2635_set_state (SV *state)
2636 PROTOTYPE: $
2637 PPCODE:
2638{
2639 AV *av = (AV *)SvRV (state);
2640 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2641 int i;
2642
2643 errno = data->errorno;
2644 PL_laststype = data->laststype;
2645 PL_laststatval = data->laststatval;
2646 PL_statcache = data->statcache;
2647
2648 EXTEND (SP, AvFILLp (av));
2649 for (i = 0; i < AvFILLp (av); ++i)
2650 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2651}
2652
2653
2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2655
2656BOOT:
2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2658
2659void
2660_schedule (...)
2661 CODE:
2662{
2663 static int incede;
2664
2665 api_cede_notself (aTHX);
2666
2667 ++incede;
2668 while (coro_nready >= incede && api_cede (aTHX))
2669 ;
2670
2671 sv_setsv (sv_activity, &PL_sv_undef);
2672 if (coro_nready >= incede)
2673 {
2674 PUSHMARK (SP);
2675 PUTBACK;
2676 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2677 SPAGAIN;
2678 }
2679
2680 --incede;
2681} 4307}
2682 4308
2683 4309
2684MODULE = Coro::State PACKAGE = PerlIO::cede 4310MODULE = Coro::State PACKAGE = PerlIO::cede
2685 4311
2686BOOT: 4312BOOT:
2687 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4313 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688 4314
4315
2689MODULE = Coro::State PACKAGE = Coro::Semaphore 4316MODULE = Coro::State PACKAGE = Coro::Semaphore
2690 4317
2691SV * 4318SV *
2692new (SV *klass, SV *count_ = 0) 4319new (SV *klass, SV *count = 0)
2693 CODE: 4320 CODE:
2694{ 4321{
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4322 int semcnt = 1;
2696 AV *av = newAV (); 4323
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4324 if (count)
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4325 {
4326 SvGETMAGIC (count);
4327
4328 if (SvOK (count))
4329 semcnt = SvIV (count);
4330 }
4331
4332 RETVAL = sv_bless (
4333 coro_waitarray_new (aTHX_ semcnt),
4334 GvSTASH (CvGV (cv))
4335 );
2699} 4336}
4337 OUTPUT:
4338 RETVAL
4339
4340# helper for Coro::Channel and others
4341SV *
4342_alloc (int count)
4343 CODE:
4344 RETVAL = coro_waitarray_new (aTHX_ count);
2700 OUTPUT: 4345 OUTPUT:
2701 RETVAL 4346 RETVAL
2702 4347
2703SV * 4348SV *
2704count (SV *self) 4349count (SV *self)
… …
2706 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4351 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2707 OUTPUT: 4352 OUTPUT:
2708 RETVAL 4353 RETVAL
2709 4354
2710void 4355void
2711up (SV *self, int adjust = 1) 4356up (SV *self)
2712 ALIAS:
2713 adjust = 1
2714 CODE: 4357 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4358 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
2716 4359
2717void 4360void
2718down (SV *self) 4361adjust (SV *self, int adjust)
4362 CODE:
4363 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4364
4365void
4366down (...)
2719 CODE: 4367 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4368 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4369
4370void
4371wait (...)
4372 CODE:
4373 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2721 4374
2722void 4375void
2723try (SV *self) 4376try (SV *self)
2724 PPCODE: 4377 PPCODE:
2725{ 4378{
… …
2737 XSRETURN_NO; 4390 XSRETURN_NO;
2738} 4391}
2739 4392
2740void 4393void
2741waiters (SV *self) 4394waiters (SV *self)
2742 CODE: 4395 PPCODE:
2743{ 4396{
2744 AV *av = (AV *)SvRV (self); 4397 AV *av = (AV *)SvRV (self);
4398 int wcount = AvFILLp (av) + 1 - 1;
2745 4399
2746 if (GIMME_V == G_SCALAR) 4400 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4401 XPUSHs (sv_2mortal (newSViv (wcount)));
2748 else 4402 else
2749 { 4403 {
2750 int i; 4404 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1); 4405 EXTEND (SP, wcount);
2752 for (i = 1; i <= AvFILLp (av); ++i) 4406 for (i = 1; i <= wcount; ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i])); 4407 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2754 } 4408 }
2755} 4409}
2756 4410
4411MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4412
4413void
4414_may_delete (SV *sem, int count, unsigned int extra_refs)
4415 PPCODE:
4416{
4417 AV *av = (AV *)SvRV (sem);
4418
4419 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4420 && AvFILLp (av) == 0 /* no waiters, just count */
4421 && SvIV (AvARRAY (av)[0]) == count)
4422 XSRETURN_YES;
4423
4424 XSRETURN_NO;
4425}
4426
4427MODULE = Coro::State PACKAGE = Coro::Signal
4428
4429SV *
4430new (SV *klass)
4431 CODE:
4432 RETVAL = sv_bless (
4433 coro_waitarray_new (aTHX_ 0),
4434 GvSTASH (CvGV (cv))
4435 );
4436 OUTPUT:
4437 RETVAL
4438
4439void
4440wait (...)
4441 CODE:
4442 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4443
4444void
4445broadcast (SV *self)
4446 CODE:
4447{
4448 AV *av = (AV *)SvRV (self);
4449 coro_signal_wake (aTHX_ av, AvFILLp (av));
4450}
4451
4452void
4453send (SV *self)
4454 CODE:
4455{
4456 AV *av = (AV *)SvRV (self);
4457
4458 if (AvFILLp (av))
4459 coro_signal_wake (aTHX_ av, 1);
4460 else
4461 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4462}
4463
4464IV
4465awaited (SV *self)
4466 CODE:
4467 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4468 OUTPUT:
4469 RETVAL
4470
4471
4472MODULE = Coro::State PACKAGE = Coro::AnyEvent
4473
4474BOOT:
4475 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4476
4477void
4478_schedule (...)
4479 CODE:
4480{
4481 static int incede;
4482
4483 api_cede_notself (aTHX);
4484
4485 ++incede;
4486 while (coro_nready >= incede && api_cede (aTHX))
4487 ;
4488
4489 sv_setsv (sv_activity, &PL_sv_undef);
4490 if (coro_nready >= incede)
4491 {
4492 PUSHMARK (SP);
4493 PUTBACK;
4494 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4495 }
4496
4497 --incede;
4498}
4499
4500
4501MODULE = Coro::State PACKAGE = Coro::AIO
4502
4503void
4504_register (char *target, char *proto, SV *req)
4505 CODE:
4506{
4507 SV *req_cv = s_get_cv_croak (req);
4508 /* newXSproto doesn't return the CV on 5.8 */
4509 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4510 sv_setpv ((SV *)slf_cv, proto);
4511 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4512}
4513
4514MODULE = Coro::State PACKAGE = Coro::Select
4515
4516void
4517patch_pp_sselect ()
4518 CODE:
4519 if (!coro_old_pp_sselect)
4520 {
4521 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4522 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4523 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4524 }
4525
4526void
4527unpatch_pp_sselect ()
4528 CODE:
4529 if (coro_old_pp_sselect)
4530 {
4531 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4532 coro_old_pp_sselect = 0;
4533 }
4534
4535MODULE = Coro::State PACKAGE = Coro::Util
4536
4537void
4538_exit (int code)
4539 CODE:
4540 _exit (code);
4541
4542NV
4543time ()
4544 CODE:
4545 RETVAL = nvtime (aTHX);
4546 OUTPUT:
4547 RETVAL
4548
4549NV
4550gettimeofday ()
4551 PPCODE:
4552{
4553 UV tv [2];
4554 u2time (aTHX_ tv);
4555 EXTEND (SP, 2);
4556 PUSHs (sv_2mortal (newSVuv (tv [0])));
4557 PUSHs (sv_2mortal (newSVuv (tv [1])));
4558}
4559

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