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Comparing Coro/Coro/State.xs (file contents):
Revision 1.266 by root, Fri Nov 14 03:26:22 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#define dSTACKLEVEL volatile char stacklevel
122#define STACKLEVEL ((void *)&stacklevel)
123
124#define IN_DESTRUCT (PL_main_cv == Nullcv)
125
126#if __GNUC__ >= 3 92#if __GNUC__ >= 4
127# define attribute(x) __attribute__(x) 93# define dSTACKLEVEL int stacklevel_dummy
128# define expect(expr,value) __builtin_expect ((expr),(value)) 94# define STACKLEVEL __builtin_frame_address (0)
129# define INLINE static inline
130#else 95#else
131# define attribute(x) 96# define dSTACKLEVEL volatile void *stacklevel
132# define expect(expr,value) (expr) 97# define STACKLEVEL ((void *)&stacklevel)
133# define INLINE static
134#endif 98#endif
135 99
136#define expect_false(expr) expect ((expr) != 0, 0) 100#define IN_DESTRUCT PL_dirty
137#define expect_true(expr) expect ((expr) != 0, 1)
138
139#define NOINLINE attribute ((noinline))
140 101
141#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
142 104
143#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 106# if CORO_PTHREAD
149static void *coro_thx; 107static void *coro_thx;
150# endif 108# endif
109#endif
151 110
111#ifdef __linux
112# include <time.h> /* for timespec */
113# include <syscall.h> /* for SYS_* */
114# ifdef SYS_clock_gettime
115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
116# define CORO_CLOCK_MONOTONIC 1
117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
118# endif
119#endif
120
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]
152#else 129#else
153 130# define SUB_ARGARRAY (SV *)cx->blk_sub.argarray
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 131#endif
158 132
159# undef LOCK 133/* perl usually suppresses asserts. for debugging, we sometimes force it to be on */
160# define LOCK (void)0 134#if 0
161# undef UNLOCK 135# undef NDEBUG
162# define UNLOCK (void)0 136# include <assert.h>
163 137#endif
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 138
174static 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);
175 146
176static U32 cctx_gen; 147static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 148static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 149static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 150static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 151static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 152static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 153static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184 154
185struct transfer_args 155static AV *av_destroy; /* destruction queue */
186{ 156static SV *sv_manager; /* the manager coro */
187 struct coro *prev, *next; 157static SV *sv_idle; /* $Coro::idle */
188};
189 158
190static GV *irsgv; /* $/ */ 159static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 160static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 161static SV *rv_diehook;
193static SV *rv_warnhook; 162static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */
195 163
196/* async_pool helper stuff */ 164/* async_pool helper stuff */
197static SV *sv_pool_rss; 165static SV *sv_pool_rss;
198static SV *sv_pool_size; 166static SV *sv_pool_size;
167static SV *sv_async_pool_idle; /* description string */
199static AV *av_async_pool; 168static AV *av_async_pool; /* idle pool */
169static SV *sv_Coro; /* class string */
170static CV *cv_pool_handler;
200 171
201/* Coro::AnyEvent */ 172/* Coro::AnyEvent */
202static SV *sv_activity; 173static SV *sv_activity;
203 174
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
204static struct coro_cctx *cctx_first; 181static struct coro_cctx *cctx_first;
205static int cctx_count, cctx_idle; 182static int cctx_count, cctx_idle;
206 183
207enum { 184enum
185{
208 CC_MAPPED = 0x01, 186 CC_MAPPED = 0x01,
209 CC_NOREUSE = 0x02, /* throw this away after tracing */ 187 CC_NOREUSE = 0x02, /* throw this away after tracing */
210 CC_TRACE = 0x04, 188 CC_TRACE = 0x04,
211 CC_TRACE_SUB = 0x08, /* trace sub calls */ 189 CC_TRACE_SUB = 0x08, /* trace sub calls */
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 190 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 191 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 192};
215 193
216/* this is a structure representing a c-level coroutine */ 194/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 195typedef struct coro_cctx
196{
218 struct coro_cctx *next; 197 struct coro_cctx *next;
219 198
220 /* the stack */ 199 /* the stack */
221 void *sptr; 200 struct coro_stack stack;
222 size_t ssize;
223 201
224 /* cpu state */ 202 /* cpu state */
225 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
226 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
227 JMPENV *top_env; 207 JMPENV *top_env;
228 coro_context cctx; 208 coro_context cctx;
229 209
230 U32 gen; 210 U32 gen;
231#if CORO_USE_VALGRIND 211#if CORO_USE_VALGRIND
232 int valgrind_id; 212 int valgrind_id;
233#endif 213#endif
234 unsigned char flags; 214 unsigned char flags;
235} coro_cctx; 215} coro_cctx;
236 216
217static coro_cctx *cctx_current; /* the currently running cctx */
218
219/*****************************************************************************/
220
221static MGVTBL coro_state_vtbl;
222
237enum { 223enum
224{
238 CF_RUNNING = 0x0001, /* coroutine is running */ 225 CF_RUNNING = 0x0001, /* coroutine is running */
239 CF_READY = 0x0002, /* coroutine is ready */ 226 CF_READY = 0x0002, /* coroutine is ready */
240 CF_NEW = 0x0004, /* has never been switched to */ 227 CF_NEW = 0x0004, /* has never been switched to */
241 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) */
242}; 231};
243 232
244/* 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 */
245typedef struct { 234typedef struct
246 SV *defsv; 235{
247 AV *defav;
248 SV *errsv;
249 SV *irsgv;
250#define VAR(name,type) type name; 236 #define VARx(name,expr,type) type name;
251# include "state.h" 237 #include "state.h"
252#undef VAR
253} perl_slots; 238} perl_slots;
254 239
240/* how many context stack entries do we need for perl_slots */
255#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))
256 242
257/* this is a structure representing a perl-level coroutine */ 243/* this is a structure representing a perl-level coroutine */
258struct coro { 244struct coro
245{
259 /* the c coroutine allocated to this perl coroutine, if any */ 246 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 247 coro_cctx *cctx;
261 248
262 /* process data */ 249 /* ready queue */
250 struct coro *next_ready;
251
252 /* state data */
253 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 254 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 255 perl_slots *slot; /* basically the saved sp */
265 256
257 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 258 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 259 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 260 HV *hv; /* the perl hash associated with this coro, if any */
270 261
271 /* statistics */ 262 /* statistics */
272 int usecount; /* number of transfers to this coro */ 263 int usecount; /* number of transfers to this coro */
273 264
274 /* coro process data */ 265 /* coro process data */
275 int prio; 266 int prio;
276 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 */
277 271
278 /* async_pool */ 272 /* async_pool */
279 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;
280 286
281 /* linked list */ 287 /* linked list */
282 struct coro *next, *prev; 288 struct coro *next, *prev;
283}; 289};
284 290
285typedef struct coro *Coro__State; 291typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 292typedef struct coro *Coro__State_or_hashref;
287 293
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 */
297static struct CoroSLF slf_frame; /* the current slf frame */
298
288/** Coro ********************************************************************/ 299/** Coro ********************************************************************/
289 300
290#define PRIO_MAX 3 301#define CORO_PRIO_MAX 3
291#define PRIO_HIGH 1 302#define CORO_PRIO_HIGH 1
292#define PRIO_NORMAL 0 303#define CORO_PRIO_NORMAL 0
293#define PRIO_LOW -1 304#define CORO_PRIO_LOW -1
294#define PRIO_IDLE -3 305#define CORO_PRIO_IDLE -3
295#define PRIO_MIN -4 306#define CORO_PRIO_MIN -4
296 307
297/* for Coro.pm */ 308/* for Coro.pm */
298static SV *coro_current; 309static SV *coro_current;
299static SV *coro_readyhook; 310static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 311static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
301static int coro_nready; 312static CV *cv_coro_run;
302static struct coro *coro_first; 313static struct coro *coro_first;
314#define coro_nready coroapi.nready
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
303 410
304/** lowlevel stuff **********************************************************/ 411/** lowlevel stuff **********************************************************/
305 412
306static SV * 413static SV * ecb_noinline
307coro_get_sv (pTHX_ const char *name, int create) 414coro_get_sv (pTHX_ const char *name, int create)
308{ 415{
309#if PERL_VERSION_ATLEAST (5,10,0) 416#if PERL_VERSION_ATLEAST (5,10,0)
310 /* 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 */
311 get_sv (name, create); 418 get_sv (name, create);
312#endif 419#endif
313 return get_sv (name, create); 420 return get_sv (name, create);
314} 421}
315 422
316static AV * 423static AV * ecb_noinline
317coro_get_av (pTHX_ const char *name, int create) 424coro_get_av (pTHX_ const char *name, int create)
318{ 425{
319#if PERL_VERSION_ATLEAST (5,10,0) 426#if PERL_VERSION_ATLEAST (5,10,0)
320 /* 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 */
321 get_av (name, create); 428 get_av (name, create);
322#endif 429#endif
323 return get_av (name, create); 430 return get_av (name, create);
324} 431}
325 432
326static HV * 433static HV * ecb_noinline
327coro_get_hv (pTHX_ const char *name, int create) 434coro_get_hv (pTHX_ const char *name, int create)
328{ 435{
329#if PERL_VERSION_ATLEAST (5,10,0) 436#if PERL_VERSION_ATLEAST (5,10,0)
330 /* 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 */
331 get_hv (name, create); 438 get_hv (name, create);
332#endif 439#endif
333 return get_hv (name, create); 440 return get_hv (name, create);
334} 441}
335 442
336static 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 *
337coro_clone_padlist (pTHX_ CV *cv) 549coro_derive_padlist (pTHX_ CV *cv)
338{ 550{
339 AV *padlist = CvPADLIST (cv); 551 PADLIST *padlist = CvPADLIST (cv);
340 AV *newpadlist, *newpad; 552 PADLIST *newpadlist;
553 PADNAMELIST *padnames;
554 PAD *newpad;
555 PADOFFSET off = PadlistMAX (padlist) + 1;
341 556
342 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. */
343 AvREAL_off (newpadlist); 585 AvREAL_off (newpadlist);
344#if PERL_VERSION_ATLEAST (5,10,0)
345 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
346#else
347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
348#endif 586#endif
349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
350 --AvFILLp (padlist);
351 587
352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 588 /* Already extended to 2 elements by newPADLIST. */
353 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;
354 596
355 return newpadlist; 597 return newpadlist;
356} 598}
357 599
358static void 600ecb_inline void
359free_padlist (pTHX_ AV *padlist) 601free_padlist (pTHX_ PADLIST *padlist)
360{ 602{
361 /* may be during global destruction */ 603 /* may be during global destruction */
362 if (SvREFCNT (padlist)) 604 if (!IN_DESTRUCT)
363 { 605 {
364 I32 i = AvFILLp (padlist); 606 I32 i = PadlistMAX (padlist);
365 while (i >= 0) 607
608 while (i > 0) /* special-case index 0 */
366 { 609 {
367 SV **svp = av_fetch (padlist, i--, FALSE); 610 /* we try to be extra-careful here */
611 PAD *pad = PadlistARRAY (padlist)[i--];
612
368 if (svp) 613 if (pad)
369 { 614 {
370 SV *sv; 615 I32 j = PadMAX (pad);
371 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 616
617 while (j >= 0)
372 SvREFCNT_dec (sv); 618 SvREFCNT_dec (PadARRAY (pad)[j--]);
373 619
620 PadMAX (pad) = -1;
374 SvREFCNT_dec (*svp); 621 SvREFCNT_dec (pad);
375 } 622 }
376 } 623 }
377 624
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);
378 SvREFCNT_dec ((SV*)padlist); 633 SvREFCNT_dec ((SV*)padlist);
634#endif
379 } 635 }
380} 636}
381 637
382static int 638static int
383coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 639coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
384{ 640{
385 AV *padlist; 641 PADLIST *padlist;
386 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;
387 644
388 /* casting is fun. */ 645 /* perl manages to free our internal AV and _then_ call us */
389 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 646 if (IN_DESTRUCT)
647 return 0;
648
649 while (len--)
390 free_padlist (aTHX_ padlist); 650 free_padlist (aTHX_ padlists[len]);
391
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 651
394 return 0; 652 return 0;
395} 653}
396
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext
398#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 654
400static MGVTBL coro_cv_vtbl = { 655static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 656 0, 0, 0, 0,
402 coro_cv_free 657 coro_cv_free
403}; 658};
404 659
405#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \
407 ? SvMAGIC (sv)->mg_type == type \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0
411
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
414
415INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro)
417{
418 HV *stash;
419 MAGIC *mg;
420
421 if (SvROK (coro))
422 coro = SvRV (coro);
423
424 if (expect_false (SvTYPE (coro) != SVt_PVHV))
425 croak ("Coro::State object required");
426
427 stash = SvSTASH (coro);
428 if (expect_false (stash != coro_stash && stash != coro_state_stash))
429 {
430 /* very slow, but rare, check */
431 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
432 croak ("Coro::State object required");
433 }
434
435 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr;
437}
438
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
440
441/* the next two functions merely cache the padlists */ 660/* the next two functions merely cache the padlists */
442static void 661ecb_inline void
443get_padlist (pTHX_ CV *cv) 662get_padlist (pTHX_ CV *cv)
444{ 663{
445 MAGIC *mg = CORO_MAGIC_cv (cv); 664 MAGIC *mg = CORO_MAGIC_cv (cv);
446 AV *av; 665 size_t *lenp;
447 666
448 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 667 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
449 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 668 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
450 else 669 else
451 { 670 {
452#if CORO_PREFER_PERL_FUNCTIONS 671#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 672 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 673 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 674 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 675 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 676 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 677 SvREFCNT_dec (cp);
459#else 678#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 679 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
461#endif 680#endif
462 } 681 }
463} 682}
464 683
465static void 684ecb_inline void
466put_padlist (pTHX_ CV *cv) 685put_padlist (pTHX_ CV *cv)
467{ 686{
468 MAGIC *mg = CORO_MAGIC_cv (cv); 687 MAGIC *mg = CORO_MAGIC_cv (cv);
469 AV *av;
470 688
471 if (expect_false (!mg)) 689 if (ecb_expect_false (!mg))
690 {
472 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);
473 699
474 av = (AV *)mg->mg_obj; 700 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
475
476 if (expect_false (AvFILLp (av) >= AvMAX (av)))
477 av_extend (av, AvMAX (av) + 1);
478
479 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
480} 701}
481 702
482/** 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);
483 776
484static void 777static void
485load_perl (pTHX_ Coro__State c) 778load_perl (pTHX_ Coro__State c)
486{ 779{
487 perl_slots *slot = c->slot; 780 perl_slots *slot = c->slot;
488 c->slot = 0; 781 c->slot = 0;
489 782
490 PL_mainstack = c->mainstack; 783 PL_mainstack = c->mainstack;
491 784
492 GvSV (PL_defgv) = slot->defsv; 785#if CORO_JIT
493 GvAV (PL_defgv) = slot->defav; 786 load_perl_slots (slot);
494 GvSV (PL_errgv) = slot->errsv; 787#else
495 GvSV (irsgv) = slot->irsgv;
496
497 #define VAR(name,type) PL_ ## name = slot->name; 788 #define VARx(name,expr,type) expr = slot->name;
498 # include "state.h" 789 #include "state.h"
499 #undef VAR 790#endif
500 791
501 { 792 {
502 dSP; 793 dSP;
503 794
504 CV *cv; 795 CV *cv;
505 796
506 /* now do the ugly restore mess */ 797 /* now do the ugly restore mess */
507 while (expect_true (cv = (CV *)POPs)) 798 while (ecb_expect_true (cv = (CV *)POPs))
508 { 799 {
509 put_padlist (aTHX_ cv); /* mark this padlist as available */ 800 put_padlist (aTHX_ cv); /* mark this padlist as available */
510 CvDEPTH (cv) = PTR2IV (POPs); 801 CvDEPTH (cv) = PTR2IV (POPs);
511 CvPADLIST (cv) = (AV *)POPs; 802 CvPADLIST (cv) = (PADLIST *)POPs;
512 } 803 }
513 804
514 PUTBACK; 805 PUTBACK;
515 } 806 }
807
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);
516} 836}
517 837
518static void 838static void
519save_perl (pTHX_ Coro__State c) 839save_perl (pTHX_ Coro__State c)
520{ 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;
868 c->slf_frame = slf_frame;
869
521 { 870 {
522 dSP; 871 dSP;
523 I32 cxix = cxstack_ix; 872 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 873 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 874 PERL_SI *top_si = PL_curstackinfo;
… …
531 880
532 XPUSHs (Nullsv); 881 XPUSHs (Nullsv);
533 /* this loop was inspired by pp_caller */ 882 /* this loop was inspired by pp_caller */
534 for (;;) 883 for (;;)
535 { 884 {
536 while (expect_true (cxix >= 0)) 885 while (ecb_expect_true (cxix >= 0))
537 { 886 {
538 PERL_CONTEXT *cx = &ccstk[cxix--]; 887 PERL_CONTEXT *cx = &ccstk[cxix--];
539 888
540 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))
541 { 890 {
542 CV *cv = cx->blk_sub.cv; 891 CV *cv = cx->blk_sub.cv;
543 892
544 if (expect_true (CvDEPTH (cv))) 893 if (ecb_expect_true (CvDEPTH (cv)))
545 { 894 {
546 EXTEND (SP, 3); 895 EXTEND (SP, 3);
547 PUSHs ((SV *)CvPADLIST (cv)); 896 PUSHs ((SV *)CvPADLIST (cv));
548 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 897 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
549 PUSHs ((SV *)cv); 898 PUSHs ((SV *)cv);
… …
552 get_padlist (aTHX_ cv); 901 get_padlist (aTHX_ cv);
553 } 902 }
554 } 903 }
555 } 904 }
556 905
557 if (expect_true (top_si->si_type == PERLSI_MAIN)) 906 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
558 break; 907 break;
559 908
560 top_si = top_si->si_prev; 909 top_si = top_si->si_prev;
561 ccstk = top_si->si_cxstack; 910 ccstk = top_si->si_cxstack;
562 cxix = top_si->si_cxix; 911 cxix = top_si->si_cxix;
… …
564 913
565 PUTBACK; 914 PUTBACK;
566 } 915 }
567 916
568 /* allocate some space on the context stack for our purposes */ 917 /* allocate some space on the context stack for our purposes */
569 /* we manually unroll here, as usually 2 slots is enough */ 918 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
570 if (SLOT_COUNT >= 1) CXINC;
571 if (SLOT_COUNT >= 2) CXINC;
572 if (SLOT_COUNT >= 3) CXINC;
573 { 919 {
574 int i; 920 unsigned int i;
921
575 for (i = 3; i < SLOT_COUNT; ++i) 922 for (i = 0; i < SLOT_COUNT; ++i)
576 CXINC; 923 CXINC;
577 } 924
578 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 925 cxstack_ix -= SLOT_COUNT; /* undo allocation */
926 }
579 927
580 c->mainstack = PL_mainstack; 928 c->mainstack = PL_mainstack;
581 929
582 { 930 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 931 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584 932
585 slot->defav = GvAV (PL_defgv); 933#if CORO_JIT
586 slot->defsv = DEFSV; 934 save_perl_slots (slot);
587 slot->errsv = ERRSV; 935#else
588 slot->irsgv = GvSV (irsgv);
589
590 #define VAR(name,type) slot->name = PL_ ## name; 936 #define VARx(name,expr,type) slot->name = expr;
591 # include "state.h" 937 #include "state.h"
592 #undef VAR 938#endif
593 } 939 }
594} 940}
595 941
596/* 942/*
597 * allocate various perl stacks. This is an exact copy 943 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 944 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 945 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 946 * not usually need a lot of stackspace.
601 */ 947 */
602#if CORO_PREFER_PERL_FUNCTIONS 948#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 949# define coro_init_stacks(thx) init_stacks ()
604#else 950#else
605static void 951static void
606coro_init_stacks (pTHX) 952coro_init_stacks (pTHX)
607{ 953{
608 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() */
609 PL_curstackinfo->si_type = PERLSI_MAIN; 955 PL_curstackinfo->si_type = PERLSI_MAIN;
610 PL_curstack = PL_curstackinfo->si_stack; 956 PL_curstack = PL_curstackinfo->si_stack;
611 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 957 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
612 958
613 PL_stack_base = AvARRAY(PL_curstack); 959 PL_stack_base = AvARRAY(PL_curstack);
… …
628#endif 974#endif
629 975
630 New(54,PL_scopestack,8,I32); 976 New(54,PL_scopestack,8,I32);
631 PL_scopestack_ix = 0; 977 PL_scopestack_ix = 0;
632 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
633 982
634 New(54,PL_savestack,24,ANY); 983 New(54,PL_savestack,24,ANY);
635 PL_savestack_ix = 0; 984 PL_savestack_ix = 0;
636 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
637 991
638#if !PERL_VERSION_ATLEAST (5,10,0) 992#if !PERL_VERSION_ATLEAST (5,10,0)
639 New(54,PL_retstack,4,OP*); 993 New(54,PL_retstack,4,OP*);
640 PL_retstack_ix = 0; 994 PL_retstack_ix = 0;
641 PL_retstack_max = 4; 995 PL_retstack_max = 4;
… …
665 } 1019 }
666 1020
667 Safefree (PL_tmps_stack); 1021 Safefree (PL_tmps_stack);
668 Safefree (PL_markstack); 1022 Safefree (PL_markstack);
669 Safefree (PL_scopestack); 1023 Safefree (PL_scopestack);
1024#if HAS_SCOPESTACK_NAME
1025 Safefree (PL_scopestack_name);
1026#endif
670 Safefree (PL_savestack); 1027 Safefree (PL_savestack);
671#if !PERL_VERSION_ATLEAST (5,10,0) 1028#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 1029 Safefree (PL_retstack);
673#endif 1030#endif
674} 1031}
675 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
676static size_t 1042static size_t
677coro_rss (pTHX_ struct coro *coro) 1043coro_rss (pTHX_ struct coro *coro)
678{ 1044{
679 size_t rss = sizeof (*coro); 1045 size_t rss = sizeof (*coro);
680 1046
681 if (coro->mainstack) 1047 if (coro->mainstack)
682 { 1048 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 1049 if (coro->flags & CF_RUNNING)
687 { 1050 {
688 slot = &tmp_slot; 1051 #define SYM(sym) PL_ ## sym
689 1052 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 1053 #undef SYM
693 } 1054 }
694 else 1055 else
695 slot = coro->slot;
696
697 if (slot)
698 { 1056 {
699 rss += sizeof (slot->curstackinfo); 1057 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1058 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1059 #undef SYM
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 } 1060 }
711 } 1061 }
712 1062
713 return rss; 1063 return rss;
714} 1064}
715 1065
716/** set stacklevel support **************************************************/ 1066/** provide custom get/set/clear methods for %SIG elements ******************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 SV **bot = SP;
728
729 int gimme = GIMME_V;
730
731 /* make sure we put something on the stack in scalar context */
732 if (gimme == G_SCALAR)
733 {
734 if (sp == bot)
735 XPUSHs (&PL_sv_undef);
736
737 SP = bot + 1;
738 }
739
740 PUTBACK;
741}
742
743/** coroutine stack handling ************************************************/
744
745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
746static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
747static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
748 1067
749/* apparently < 5.8.8 */ 1068/* apparently < 5.8.8 */
750#ifndef MgPV_nolen_const 1069#ifndef MgPV_nolen_const
751#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1070#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
752 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1071 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
753 (const char*)(mg)->mg_ptr) 1072 (const char*)(mg)->mg_ptr)
754#endif 1073#endif
755 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
756/* 1103/*
757 * This overrides the default magic get method of %SIG elements. 1104 * This overrides the default magic get method of %SIG elements.
758 * 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
759 * 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),
760 * readback here. 1107 * we just provide our own readback here.
761 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
762 * not expecting this to actually change the hook. This is a potential problem
763 * when a schedule happens then, but we ignore this.
764 */ 1108 */
1109static int ecb_cold
1110coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
1111{
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;
1115
1116 SV *ssv;
1117
1118 if (!*svp)
1119 ssv = &PL_sv_undef;
1120 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1121 ssv = sv_2mortal (newRV_inc (*svp));
1122 else
1123 ssv = *svp;
1124
1125 sv_setsv (sv, ssv);
1126 return 0;
1127}
1128
1129static int ecb_cold
1130coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
1131{
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;
1135
1136 SV *old = *svp;
1137 *svp = 0;
1138 SvREFCNT_dec (old);
1139 return 0;
1140}
1141
1142static int ecb_cold
1143coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
1144{
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;
1148
1149 SV *old = *svp;
1150 *svp = SvOK (sv) ? newSVsv (sv) : 0;
1151 SvREFCNT_dec (old);
1152 return 0;
1153}
1154
1155static void
1156prepare_nop (pTHX_ struct coro_transfer_args *ta)
1157{
1158 /* kind of mega-hacky, but works */
1159 ta->next = ta->prev = (struct coro *)ta;
1160}
1161
765static int 1162static int
766coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1163slf_check_nop (pTHX_ struct CoroSLF *frame)
767{ 1164{
768 const char *s = MgPV_nolen_const (mg); 1165 return 0;
769
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_setsv (sv, *svp ? *svp : &PL_sv_undef);
780 return 0;
781 }
782 }
783
784 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
785} 1166}
786 1167
787static int 1168static int
788coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1169slf_check_repeat (pTHX_ struct CoroSLF *frame)
789{ 1170{
790 const char *s = MgPV_nolen_const (mg); 1171 return 1;
791
792 if (*s == '_')
793 {
794 SV **svp = 0;
795
796 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
797 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
798
799 if (svp)
800 {
801 SV *old = *svp;
802 *svp = 0;
803 SvREFCNT_dec (old);
804 return 0;
805 }
806 }
807
808 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
809} 1172}
810 1173
811static int 1174/** coroutine stack handling ************************************************/
812coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
813{
814 const char *s = MgPV_nolen_const (mg);
815 1175
816 if (*s == '_') 1176static UNOP init_perl_op;
817 {
818 SV **svp = 0;
819 1177
820 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1178ecb_noinline static void /* noinline to keep it out of the transfer fast path */
821 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
822
823 if (svp)
824 {
825 SV *old = *svp;
826 *svp = newSVsv (sv);
827 SvREFCNT_dec (old);
828 return 0;
829 }
830 }
831
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833}
834
835static void
836coro_setup (pTHX_ struct coro *coro) 1179init_perl (pTHX_ struct coro *coro)
837{ 1180{
838 /* 1181 /*
839 * emulate part of the perl startup here. 1182 * emulate part of the perl startup here.
840 */ 1183 */
841 coro_init_stacks (aTHX); 1184 coro_init_stacks (aTHX);
842 1185
843 PL_runops = RUNOPS_DEFAULT; 1186 PL_runops = RUNOPS_DEFAULT;
844 PL_curcop = &PL_compiling; 1187 PL_curcop = &PL_compiling;
845 PL_in_eval = EVAL_NULL; 1188 PL_in_eval = EVAL_NULL;
846 PL_comppad = 0; 1189 PL_comppad = 0;
1190 PL_comppad_name = 0;
1191 PL_comppad_name_fill = 0;
1192 PL_comppad_name_floor = 0;
847 PL_curpm = 0; 1193 PL_curpm = 0;
848 PL_curpad = 0; 1194 PL_curpad = 0;
849 PL_localizing = 0; 1195 PL_localizing = 0;
850 PL_dirty = 0;
851 PL_restartop = 0; 1196 PL_restartop = 0;
852#if PERL_VERSION_ATLEAST (5,10,0) 1197#if PERL_VERSION_ATLEAST (5,10,0)
853 PL_parser = 0; 1198 PL_parser = 0;
854#endif 1199#endif
1200 PL_hints = 0;
855 1201
856 /* recreate the die/warn hooks */ 1202 /* recreate the die/warn hooks */
857 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1203 PL_diehook = SvREFCNT_inc (rv_diehook);
858 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1204 PL_warnhook = SvREFCNT_inc (rv_warnhook);
859 1205
860 GvSV (PL_defgv) = newSV (0); 1206 GvSV (PL_defgv) = newSV (0);
861 GvAV (PL_defgv) = coro->args; coro->args = 0; 1207 GvAV (PL_defgv) = coro->args; coro->args = 0;
862 GvSV (PL_errgv) = newSV (0); 1208 GvSV (PL_errgv) = newSV (0);
863 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
864 PL_rs = newSVsv (GvSV (irsgv)); 1214 PL_rs = newSVsv (GvSV (irsgv));
865 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1215 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
866 1216
867 { 1217 {
868 dSP; 1218 dSP;
869 UNOP myop; 1219 UNOP myop;
870 1220
871 Zero (&myop, 1, UNOP); 1221 Zero (&myop, 1, UNOP);
872 myop.op_next = Nullop; 1222 myop.op_next = Nullop;
1223 myop.op_type = OP_ENTERSUB;
873 myop.op_flags = OPf_WANT_VOID; 1224 myop.op_flags = OPf_WANT_VOID;
874 1225
875 PUSHMARK (SP); 1226 PUSHMARK (SP);
876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1227 XPUSHs ((SV *)coro->startcv);
877 PUTBACK; 1228 PUTBACK;
878 PL_op = (OP *)&myop; 1229 PL_op = (OP *)&myop;
879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1230 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
880 SPAGAIN;
881 } 1231 }
882 1232
883 /* 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
884 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 1234 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
885 * so we have to emulate entering pp_set_stacklevel here.
886 */ 1235 */
887 SSL_HEAD; 1236 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
888} 1237 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1238 slf_frame.destroy = 0;
889 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
890static void 1260static void
891coro_destruct (pTHX_ struct coro *coro) 1261coro_unwind_stacks (pTHX)
892{ 1262{
893 if (!IN_DESTRUCT) 1263 if (!IN_DESTRUCT)
894 { 1264 {
895 /* restore all saved variables and stuff */ 1265 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0); 1266 LEAVE_SCOPE (0);
… …
904 POPSTACK_TO (PL_mainstack); 1274 POPSTACK_TO (PL_mainstack);
905 1275
906 /* unwind main stack */ 1276 /* unwind main stack */
907 dounwind (-1); 1277 dounwind (-1);
908 } 1278 }
1279}
909 1280
910 SvREFCNT_dec (GvSV (PL_defgv)); 1281static void
911 SvREFCNT_dec (GvAV (PL_defgv)); 1282destroy_perl (pTHX_ struct coro *coro)
912 SvREFCNT_dec (GvSV (PL_errgv)); 1283{
913 SvREFCNT_dec (PL_defoutgv); 1284 SV *svf [9];
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916 1285
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919 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
920 SvREFCNT_dec (coro->saved_deffh); 1329 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw); 1330 SvREFCNT_dec (coro->rouse_cb);
922 1331 SvREFCNT_dec (coro->invoke_cb);
923 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 }
924} 1336}
925 1337
926INLINE void 1338ecb_inline void
927free_coro_mortal (pTHX) 1339free_coro_mortal (pTHX)
928{ 1340{
929 if (expect_true (coro_mortal)) 1341 if (ecb_expect_true (coro_mortal))
930 { 1342 {
931 SvREFCNT_dec (coro_mortal); 1343 SvREFCNT_dec ((SV *)coro_mortal);
932 coro_mortal = 0; 1344 coro_mortal = 0;
933 } 1345 }
934} 1346}
935 1347
936static int 1348static int
937runops_trace (pTHX) 1349runops_trace (pTHX)
938{ 1350{
939 COP *oldcop = 0; 1351 COP *oldcop = 0;
940 int oldcxix = -2; 1352 int oldcxix = -2;
941 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 1353
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1354 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 1355 {
946 PERL_ASYNC_CHECK (); 1356 PERL_ASYNC_CHECK ();
947 1357
948 if (cctx->flags & CC_TRACE_ALL) 1358 if (cctx_current->flags & CC_TRACE_ALL)
949 { 1359 {
950 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)
951 { 1361 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1362 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 1363 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 1364 AV *av = newAV (); /* return values */
955 SV **cb; 1365 SV **cb;
… …
970 av_push (av, SvREFCNT_inc_NN (*bot++)); 1380 av_push (av, SvREFCNT_inc_NN (*bot++));
971 1381
972 PL_runops = RUNOPS_DEFAULT; 1382 PL_runops = RUNOPS_DEFAULT;
973 ENTER; 1383 ENTER;
974 SAVETMPS; 1384 SAVETMPS;
1385 PUSHMARK (SP);
975 EXTEND (SP, 3); 1386 EXTEND (SP, 3);
976 PUSHMARK (SP);
977 PUSHs (&PL_sv_no); 1387 PUSHs (&PL_sv_no);
978 PUSHs (fullname); 1388 PUSHs (fullname);
979 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 1389 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
980 PUTBACK; 1390 PUTBACK;
981 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);
… …
992 1402
993 if (PL_curcop != &PL_compiling) 1403 if (PL_curcop != &PL_compiling)
994 { 1404 {
995 SV **cb; 1405 SV **cb;
996 1406
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1407 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
998 { 1408 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1409 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1410
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1411 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1412 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1413 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1414 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1415 SV *fullname = sv_2mortal (newSV (0));
1007 1416
1008 if (isGV (gv)) 1417 if (isGV (gv))
1009 gv_efullname3 (fullname, gv, 0); 1418 gv_efullname3 (fullname, gv, 0);
1010 1419
1011 PL_runops = RUNOPS_DEFAULT; 1420 PL_runops = RUNOPS_DEFAULT;
1012 ENTER; 1421 ENTER;
1013 SAVETMPS; 1422 SAVETMPS;
1423 PUSHMARK (SP);
1014 EXTEND (SP, 3); 1424 EXTEND (SP, 3);
1015 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1425 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1426 PUSHs (fullname);
1018 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);
1019 PUTBACK; 1428 PUTBACK;
1020 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);
1021 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);
1022 SPAGAIN; 1431 SPAGAIN;
1023 FREETMPS; 1432 FREETMPS;
… …
1026 } 1435 }
1027 1436
1028 oldcxix = cxstack_ix; 1437 oldcxix = cxstack_ix;
1029 } 1438 }
1030 1439
1031 if (cctx->flags & CC_TRACE_LINE) 1440 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1441 {
1033 dSP; 1442 dSP;
1034 1443
1035 PL_runops = RUNOPS_DEFAULT; 1444 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1445 ENTER;
1037 SAVETMPS; 1446 SAVETMPS;
1038 EXTEND (SP, 3);
1039 PL_runops = RUNOPS_DEFAULT;
1040 PUSHMARK (SP); 1447 PUSHMARK (SP);
1448 EXTEND (SP, 2);
1041 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1449 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1042 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1450 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1043 PUTBACK; 1451 PUTBACK;
1044 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);
1045 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);
… …
1055 1463
1056 TAINT_NOT; 1464 TAINT_NOT;
1057 return 0; 1465 return 0;
1058} 1466}
1059 1467
1468static struct CoroSLF cctx_ssl_frame;
1469
1060static void 1470static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1471slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1062{ 1472{
1063 ta->prev = (struct coro *)cctx;
1064 ta->next = 0; 1473 ta->prev = 0;
1065} 1474}
1066 1475
1067/* inject a fake call to Coro::State::_cctx_init into the execution */ 1476static int
1068/* _cctx_init should be careful, as it could be called at almost any time */ 1477slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1069/* during execution of a perl program */
1070/* also initialises PL_top_env */
1071static void NOINLINE
1072cctx_prepare (pTHX_ coro_cctx *cctx)
1073{ 1478{
1074 dSP; 1479 *frame = cctx_ssl_frame;
1075 UNOP myop;
1076 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{
1077 PL_top_env = &PL_start_env; 1488 PL_top_env = &PL_start_env;
1078 1489
1079 if (cctx->flags & CC_TRACE) 1490 if (cctx_current->flags & CC_TRACE)
1080 PL_runops = runops_trace; 1491 PL_runops = runops_trace;
1081 1492
1082 Zero (&myop, 1, UNOP); 1493 /* we already must be executing an SLF op, there is no other valid way
1083 myop.op_next = PL_op; 1494 * that can lead to creation of a new cctx */
1084 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));
1085 1497
1086 PUSHMARK (SP); 1498 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1087 EXTEND (SP, 2); 1499 cctx_ssl_frame = slf_frame;
1088 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1500
1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1501 slf_frame.prepare = slf_prepare_set_stacklevel;
1090 PUTBACK; 1502 slf_frame.check = slf_check_set_stacklevel;
1091 PL_op = (OP *)&myop;
1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1093 SPAGAIN;
1094} 1503}
1095 1504
1096/* 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 */
1097INLINE void 1506ecb_inline void
1098transfer_tail (pTHX) 1507transfer_tail (pTHX)
1099{ 1508{
1100 struct coro *next = (struct coro *)transfer_next;
1101 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1102 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1103
1104 free_coro_mortal (aTHX); 1509 free_coro_mortal (aTHX);
1105 UNLOCK; 1510}
1106 1511
1107 if (expect_false (next->throw)) 1512/* try to exit the same way perl's main function would do */
1108 { 1513/* we do not bother resetting the environment or other things *7
1109 SV *exception = sv_2mortal (next->throw); 1514/* that are not, uhm, essential */
1110 1515/* this obviously also doesn't work when perl is embedded */
1111 next->throw = 0; 1516static void ecb_noinline ecb_cold
1112 sv_setsv (ERRSV, exception); 1517perlish_exit (pTHX)
1113 croak (0); 1518{
1114 } 1519 int exitstatus = perl_destruct (PL_curinterp);
1520 perl_free (PL_curinterp);
1521 exit (exitstatus);
1115} 1522}
1116 1523
1117/* 1524/*
1118 * this is a _very_ stripped down perl interpreter ;) 1525 * this is a _very_ stripped down perl interpreter ;)
1119 */ 1526 */
… …
1126# endif 1533# endif
1127#endif 1534#endif
1128 { 1535 {
1129 dTHX; 1536 dTHX;
1130 1537
1131 /* we are the alternative tail to pp_set_stacklevel */ 1538 /* normally we would need to skip the entersub here */
1132 /* so do the same things here */ 1539 /* not doing so will re-execute it, which is exactly what we want */
1133 SSL_TAIL;
1134
1135 /* we now skip the op that did lead to transfer() */
1136 PL_op = PL_op->op_next; 1540 /* PL_nop = PL_nop->op_next */
1137 1541
1138 /* inject a fake subroutine call to cctx_init */ 1542 /* inject a fake subroutine call to cctx_init */
1139 cctx_prepare (aTHX_ (coro_cctx *)arg); 1543 cctx_prepare (aTHX);
1140 1544
1141 /* cctx_run is the alternative tail of transfer() */ 1545 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX); 1546 transfer_tail (aTHX);
1143 1547
1144 /* 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 */
1145 PL_restartop = PL_op; 1549 PL_restartop = PL_op;
1146 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;
1147 1563
1148 /* 1564 /*
1149 * 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
1150 * 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)
1151 * 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
1152 * bootstrap-time "top" top_env, as we cannot restore the "main" 1568 * doing in that case. YMMV.
1153 * coroutine as Coro has no such concept
1154 */ 1569 */
1155 PL_top_env = main_top_env; 1570 perlish_exit (aTHX);
1156 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1157 } 1571 }
1158} 1572}
1159 1573
1160static coro_cctx * 1574static coro_cctx *
1161cctx_new () 1575cctx_new (void)
1162{ 1576{
1163 coro_cctx *cctx; 1577 coro_cctx *cctx;
1164 1578
1165 ++cctx_count; 1579 ++cctx_count;
1166 New (0, cctx, 1, coro_cctx); 1580 New (0, cctx, 1, coro_cctx);
… …
1172 return cctx; 1586 return cctx;
1173} 1587}
1174 1588
1175/* create a new cctx only suitable as source */ 1589/* create a new cctx only suitable as source */
1176static coro_cctx * 1590static coro_cctx *
1177cctx_new_empty () 1591cctx_new_empty (void)
1178{ 1592{
1179 coro_cctx *cctx = cctx_new (); 1593 coro_cctx *cctx = cctx_new ();
1180 1594
1181 cctx->sptr = 0; 1595 cctx->stack.sptr = 0;
1182 coro_create (&cctx->cctx, 0, 0, 0, 0); 1596 coro_create (&cctx->cctx, 0, 0, 0, 0);
1183 1597
1184 return cctx; 1598 return cctx;
1185} 1599}
1186 1600
1187/* create a new cctx suitable as destination/running a perl interpreter */ 1601/* create a new cctx suitable as destination/running a perl interpreter */
1188static coro_cctx * 1602static coro_cctx *
1189cctx_new_run () 1603cctx_new_run (void)
1190{ 1604{
1191 coro_cctx *cctx = cctx_new (); 1605 coro_cctx *cctx = cctx_new ();
1192 void *stack_start;
1193 size_t stack_size;
1194 1606
1195#if HAVE_MMAP 1607 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1196 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1197 /* mmap supposedly does allocate-on-write for us */
1198 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1199
1200 if (cctx->sptr != (void *)-1)
1201 {
1202 #if CORO_STACKGUARD
1203 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1204 #endif
1205 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1206 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1207 cctx->flags |= CC_MAPPED;
1208 } 1608 {
1209 else
1210#endif
1211 {
1212 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1213 New (0, cctx->sptr, cctx_stacksize, long);
1214
1215 if (!cctx->sptr)
1216 {
1217 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1609 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1218 _exit (EXIT_FAILURE); 1610 _exit (EXIT_FAILURE);
1219 }
1220
1221 stack_start = cctx->sptr;
1222 stack_size = cctx->ssize;
1223 } 1611 }
1224 1612
1225 #if CORO_USE_VALGRIND
1226 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1227 #endif
1228
1229 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);
1230 1614
1231 return cctx; 1615 return cctx;
1232} 1616}
1233 1617
1234static void 1618static void
1235cctx_destroy (coro_cctx *cctx) 1619cctx_destroy (coro_cctx *cctx)
1236{ 1620{
1237 if (!cctx) 1621 if (!cctx)
1238 return; 1622 return;
1239 1623
1624 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1625
1240 --cctx_count; 1626 --cctx_count;
1241 coro_destroy (&cctx->cctx); 1627 coro_destroy (&cctx->cctx);
1242 1628
1243 /* coro_transfer creates new, empty cctx's */ 1629 coro_stack_free (&cctx->stack);
1244 if (cctx->sptr)
1245 {
1246 #if CORO_USE_VALGRIND
1247 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1248 #endif
1249
1250#if HAVE_MMAP
1251 if (cctx->flags & CC_MAPPED)
1252 munmap (cctx->sptr, cctx->ssize);
1253 else
1254#endif
1255 Safefree (cctx->sptr);
1256 }
1257 1630
1258 Safefree (cctx); 1631 Safefree (cctx);
1259} 1632}
1260 1633
1261/* wether this cctx should be destructed */ 1634/* wether this cctx should be destructed */
1262#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))
1263 1636
1264static coro_cctx * 1637static coro_cctx *
1265cctx_get (pTHX) 1638cctx_get (pTHX)
1266{ 1639{
1267 while (expect_true (cctx_first)) 1640 while (ecb_expect_true (cctx_first))
1268 { 1641 {
1269 coro_cctx *cctx = cctx_first; 1642 coro_cctx *cctx = cctx_first;
1270 cctx_first = cctx->next; 1643 cctx_first = cctx->next;
1271 --cctx_idle; 1644 --cctx_idle;
1272 1645
1273 if (expect_true (!CCTX_EXPIRED (cctx))) 1646 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1274 return cctx; 1647 return cctx;
1275 1648
1276 cctx_destroy (cctx); 1649 cctx_destroy (cctx);
1277 } 1650 }
1278 1651
… …
1280} 1653}
1281 1654
1282static void 1655static void
1283cctx_put (coro_cctx *cctx) 1656cctx_put (coro_cctx *cctx)
1284{ 1657{
1285 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));
1286 1659
1287 /* free another cctx if overlimit */ 1660 /* free another cctx if overlimit */
1288 if (expect_false (cctx_idle >= cctx_max_idle)) 1661 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1289 { 1662 {
1290 coro_cctx *first = cctx_first; 1663 coro_cctx *first = cctx_first;
1291 cctx_first = first->next; 1664 cctx_first = first->next;
1292 --cctx_idle; 1665 --cctx_idle;
1293 1666
… …
1302/** coroutine switching *****************************************************/ 1675/** coroutine switching *****************************************************/
1303 1676
1304static void 1677static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next) 1678transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{ 1679{
1680 /* TODO: throwing up here is considered harmful */
1681
1307 if (expect_true (prev != next)) 1682 if (ecb_expect_true (prev != next))
1308 { 1683 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1684 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1310 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,");
1311 1686
1312 if (expect_false (next->flags & CF_RUNNING)) 1687 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1313 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1314
1315 if (expect_false (next->flags & CF_DESTROYED))
1316 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,");
1317 1689
1318#if !PERL_VERSION_ATLEAST (5,10,0) 1690#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1691 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1320 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,");
1321#endif 1693#endif
1322 } 1694 }
1323} 1695}
1324 1696
1325/* always use the TRANSFER macro */ 1697/* always use the TRANSFER macro */
1326static void NOINLINE 1698static void ecb_noinline /* noinline so we have a fixed stackframe */
1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1699transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1328{ 1700{
1329 dSTACKLEVEL; 1701 dSTACKLEVEL;
1330 1702
1331 /* sometimes transfer is only called to set idle_sp */ 1703 /* sometimes transfer is only called to set idle_sp */
1332 if (expect_false (!next)) 1704 if (ecb_expect_false (!prev))
1333 { 1705 {
1334 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1706 cctx_current->idle_sp = STACKLEVEL;
1335 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 */
1336 } 1708 }
1337 else if (expect_true (prev != next)) 1709 else if (ecb_expect_true (prev != next))
1338 { 1710 {
1339 coro_cctx *prev__cctx; 1711 coro_cctx *cctx_prev;
1340 1712
1341 if (expect_false (prev->flags & CF_NEW)) 1713 if (ecb_expect_false (prev->flags & CF_NEW))
1342 { 1714 {
1343 /* create a new empty/source context */ 1715 /* create a new empty/source context */
1344 prev->cctx = cctx_new_empty ();
1345 prev->flags &= ~CF_NEW; 1716 prev->flags &= ~CF_NEW;
1346 prev->flags |= CF_RUNNING; 1717 prev->flags |= CF_RUNNING;
1347 } 1718 }
1348 1719
1349 prev->flags &= ~CF_RUNNING; 1720 prev->flags &= ~CF_RUNNING;
1350 next->flags |= CF_RUNNING; 1721 next->flags |= CF_RUNNING;
1351 1722
1352 LOCK;
1353
1354 /* first get rid of the old state */ 1723 /* first get rid of the old state */
1355 save_perl (aTHX_ prev); 1724 save_perl (aTHX_ prev);
1356 1725
1357 if (expect_false (next->flags & CF_NEW)) 1726 if (ecb_expect_false (next->flags & CF_NEW))
1358 { 1727 {
1359 /* need to start coroutine */ 1728 /* need to start coroutine */
1360 next->flags &= ~CF_NEW; 1729 next->flags &= ~CF_NEW;
1361 /* setup coroutine call */ 1730 /* setup coroutine call */
1362 coro_setup (aTHX_ next); 1731 init_perl (aTHX_ next);
1363 } 1732 }
1364 else 1733 else
1365 load_perl (aTHX_ next); 1734 load_perl (aTHX_ next);
1366 1735
1367 prev__cctx = prev->cctx;
1368
1369 /* possibly untie and reuse the cctx */ 1736 /* possibly untie and reuse the cctx */
1370 if (expect_true ( 1737 if (ecb_expect_true (
1371 prev__cctx->idle_sp == STACKLEVEL 1738 cctx_current->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE) 1739 && !(cctx_current->flags & CC_TRACE)
1373 && !force_cctx 1740 && !force_cctx
1374 )) 1741 ))
1375 { 1742 {
1376 /* 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 */
1377 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));
1378 1745
1379 prev->cctx = 0;
1380
1381 /* 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. */
1382 /* 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 */
1383 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1748 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1384 if (!next->cctx) 1749 if (ecb_expect_true (!next->cctx))
1385 next->cctx = cctx_get (aTHX); 1750 next->cctx = cctx_get (aTHX);
1386 1751
1387 cctx_put (prev__cctx); 1752 cctx_put (cctx_current);
1388 } 1753 }
1754 else
1755 prev->cctx = cctx_current;
1389 1756
1390 ++next->usecount; 1757 ++next->usecount;
1391 1758
1392 if (expect_true (!next->cctx)) 1759 cctx_prev = cctx_current;
1393 next->cctx = cctx_get (aTHX); 1760 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1394 1761
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1762 next->cctx = 0;
1396 transfer_next = next;
1397 1763
1398 if (expect_false (prev__cctx != next->cctx)) 1764 if (ecb_expect_false (cctx_prev != cctx_current))
1399 { 1765 {
1400 prev__cctx->top_env = PL_top_env; 1766 cctx_prev->top_env = PL_top_env;
1401 PL_top_env = next->cctx->top_env; 1767 PL_top_env = cctx_current->top_env;
1402 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1768 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1403 } 1769 }
1404 1770
1405 transfer_tail (aTHX); 1771 transfer_tail (aTHX);
1406 } 1772 }
1407} 1773}
… …
1409#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))
1410#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1776#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1411 1777
1412/** high level stuff ********************************************************/ 1778/** high level stuff ********************************************************/
1413 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 */
1414static int 1782static void
1783coro_call_on_destroy (pTHX_ struct coro *coro);
1784
1785static void
1415coro_state_destroy (pTHX_ struct coro *coro) 1786coro_state_destroy (pTHX_ struct coro *coro)
1416{ 1787{
1417 if (coro->flags & CF_DESTROYED) 1788 if (coro->flags & CF_ZOMBIE)
1418 return 0; 1789 return;
1419 1790
1791 slf_destroy (aTHX_ coro);
1792
1420 coro->flags |= CF_DESTROYED; 1793 coro->flags |= CF_ZOMBIE;
1421 1794
1422 if (coro->flags & CF_READY) 1795 if (coro->flags & CF_READY)
1423 { 1796 {
1424 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1797 /* reduce nready, as destroying a ready coro effectively unreadies it */
1425 /* alternative: look through all ready queues and remove the coro */ 1798 /* alternative: look through all ready queues and remove the coro */
1426 LOCK;
1427 --coro_nready; 1799 --coro_nready;
1428 UNLOCK;
1429 } 1800 }
1430 else 1801 else
1431 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 */
1432
1433 if (coro->mainstack && coro->mainstack != main_mainstack)
1434 {
1435 struct coro temp;
1436
1437 if (coro->flags & CF_RUNNING)
1438 croak ("FATAL: tried to destroy currently running coroutine");
1439
1440 save_perl (aTHX_ &temp);
1441 load_perl (aTHX_ coro);
1442
1443 coro_destruct (aTHX_ coro);
1444
1445 load_perl (aTHX_ &temp);
1446
1447 coro->slot = 0;
1448 }
1449
1450 cctx_destroy (coro->cctx);
1451 SvREFCNT_dec (coro->args);
1452 1803
1453 if (coro->next) coro->next->prev = coro->prev; 1804 if (coro->next) coro->next->prev = coro->prev;
1454 if (coro->prev) coro->prev->next = coro->next; 1805 if (coro->prev) coro->prev->next = coro->next;
1455 if (coro == coro_first) coro_first = coro->next; 1806 if (coro == coro_first) coro_first = coro->next;
1456 1807
1457 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 */
1458} 1823}
1459 1824
1460static int 1825static int
1461coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1826coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1462{ 1827{
1463 struct coro *coro = (struct coro *)mg->mg_ptr; 1828 struct coro *coro = (struct coro *)mg->mg_ptr;
1464 mg->mg_ptr = 0; 1829 mg->mg_ptr = 0;
1465 1830
1466 coro->hv = 0;
1467
1468 if (--coro->refcnt < 0)
1469 {
1470 coro_state_destroy (aTHX_ coro); 1831 coro_state_destroy (aTHX_ coro);
1832 SvREFCNT_dec (coro->on_destroy);
1833 SvREFCNT_dec (coro->status);
1834
1471 Safefree (coro); 1835 Safefree (coro);
1472 }
1473 1836
1474 return 0; 1837 return 0;
1475} 1838}
1476 1839
1477static int 1840static int ecb_cold
1478coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1841coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1479{ 1842{
1480 struct coro *coro = (struct coro *)mg->mg_ptr; 1843 /* called when perl clones the current process the slow way (windows process emulation) */
1481 1844 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1482 ++coro->refcnt; 1845 mg->mg_ptr = 0;
1846 mg->mg_virtual = 0;
1483 1847
1484 return 0; 1848 return 0;
1485} 1849}
1486 1850
1487static MGVTBL coro_state_vtbl = { 1851static MGVTBL coro_state_vtbl = {
… …
1494# define MGf_DUP 0 1858# define MGf_DUP 0
1495#endif 1859#endif
1496}; 1860};
1497 1861
1498static void 1862static void
1499prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1863prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1500{ 1864{
1501 ta->prev = SvSTATE (prev_sv); 1865 ta->prev = SvSTATE (prev_sv);
1502 ta->next = SvSTATE (next_sv); 1866 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta); 1867 TRANSFER_CHECK (*ta);
1504} 1868}
1505 1869
1506static void 1870static void
1507api_transfer (SV *prev_sv, SV *next_sv) 1871api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1508{ 1872{
1509 dTHX;
1510 struct transfer_args ta; 1873 struct coro_transfer_args ta;
1511 1874
1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1875 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1513 TRANSFER (ta, 1); 1876 TRANSFER (ta, 1);
1514} 1877}
1515 1878
1516/** Coro ********************************************************************/ 1879/** Coro ********************************************************************/
1517 1880
1518static void 1881ecb_inline void
1519coro_enq (pTHX_ SV *coro_sv) 1882coro_enq (pTHX_ struct coro *coro)
1520{ 1883{
1521 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1884 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1522}
1523 1885
1524static 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 *
1525coro_deq (pTHX) 1894coro_deq (pTHX)
1526{ 1895{
1527 int prio; 1896 int prio;
1528 1897
1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1898 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1530 if (AvFILLp (coro_ready [prio]) >= 0) 1899 {
1531 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 }
1532 1909
1533 return 0; 1910 return 0;
1534} 1911}
1535 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;
1928}
1929
1536static int 1930static int
1537api_ready (SV *coro_sv) 1931api_ready (pTHX_ SV *coro_sv)
1538{ 1932{
1539 dTHX;
1540 struct coro *coro;
1541 SV *sv_hook;
1542 void (*xs_hook)(void);
1543
1544 if (SvROK (coro_sv))
1545 coro_sv = SvRV (coro_sv);
1546
1547 coro = SvSTATE (coro_sv); 1933 struct coro *coro = SvSTATE (coro_sv);
1548 1934
1549 if (coro->flags & CF_READY) 1935 if (coro->flags & CF_READY)
1550 return 0; 1936 return 0;
1551 1937
1552 coro->flags |= CF_READY; 1938 coro->flags |= CF_READY;
1553 1939
1554 LOCK; 1940 coro_enq (aTHX_ coro);
1555 1941
1556 sv_hook = coro_nready ? 0 : coro_readyhook; 1942 if (!coro_nready++)
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1943 if (coroapi.readyhook)
1558 1944 coroapi.readyhook ();
1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1560 ++coro_nready;
1561
1562 UNLOCK;
1563
1564 if (sv_hook)
1565 {
1566 dSP;
1567
1568 ENTER;
1569 SAVETMPS;
1570
1571 PUSHMARK (SP);
1572 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD);
1574 SPAGAIN;
1575
1576 FREETMPS;
1577 LEAVE;
1578 }
1579
1580 if (xs_hook)
1581 xs_hook ();
1582 1945
1583 return 1; 1946 return 1;
1584} 1947}
1585 1948
1586static int 1949static int
1587api_is_ready (SV *coro_sv) 1950api_is_ready (pTHX_ SV *coro_sv)
1588{ 1951{
1589 dTHX;
1590
1591 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1952 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1592} 1953}
1593 1954
1594INLINE void 1955/* expects to own a reference to next->hv */
1956ecb_inline void
1595prepare_schedule (pTHX_ struct transfer_args *ta) 1957prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1596{ 1958{
1597 SV *prev_sv, *next_sv;
1598
1599 for (;;)
1600 {
1601 LOCK;
1602 next_sv = coro_deq (aTHX);
1603
1604 /* nothing to schedule: call the idle handler */
1605 if (expect_false (!next_sv))
1606 {
1607 dSP;
1608 UNLOCK;
1609
1610 ENTER;
1611 SAVETMPS;
1612
1613 PUSHMARK (SP);
1614 PUTBACK;
1615 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1616 SPAGAIN;
1617
1618 FREETMPS;
1619 LEAVE;
1620 continue;
1621 }
1622
1623 ta->next = SvSTATE (next_sv);
1624
1625 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 {
1628 UNLOCK;
1629 SvREFCNT_dec (next_sv);
1630 /* coro_nready has already been taken care of by destroy */
1631 continue;
1632 }
1633
1634 --coro_nready;
1635 UNLOCK;
1636 break;
1637 }
1638
1639 /* free this only after the transfer */
1640 prev_sv = SvRV (coro_current); 1959 SV *prev_sv = SvRV (coro_current);
1960
1641 ta->prev = SvSTATE (prev_sv); 1961 ta->prev = SvSTATE_hv (prev_sv);
1962 ta->next = next;
1963
1642 TRANSFER_CHECK (*ta); 1964 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1965
1644 ta->next->flags &= ~CF_READY;
1645 SvRV_set (coro_current, next_sv); 1966 SvRV_set (coro_current, (SV *)next->hv);
1646 1967
1647 LOCK;
1648 free_coro_mortal (aTHX); 1968 free_coro_mortal (aTHX);
1649 coro_mortal = prev_sv; 1969 coro_mortal = prev_sv;
1650 UNLOCK;
1651} 1970}
1652 1971
1653INLINE 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
1654prepare_cede (pTHX_ struct transfer_args *ta) 2043prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655{ 2044{
1656 api_ready (coro_current); 2045 api_ready (aTHX_ coro_current);
1657 prepare_schedule (aTHX_ ta); 2046 prepare_schedule (aTHX_ ta);
1658} 2047}
1659 2048
2049ecb_inline void
2050prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
2051{
2052 SV *prev = SvRV (coro_current);
2053
2054 if (coro_nready)
2055 {
2056 prepare_schedule (aTHX_ ta);
2057 api_ready (aTHX_ prev);
2058 }
2059 else
2060 prepare_nop (aTHX_ ta);
2061}
2062
2063static void
2064api_schedule (pTHX)
2065{
2066 struct coro_transfer_args ta;
2067
2068 prepare_schedule (aTHX_ &ta);
2069 TRANSFER (ta, 1);
2070}
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
1660static int 2082static int
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 2083api_cede (pTHX)
1662{ 2084{
1663 if (coro_nready) 2085 struct coro_transfer_args ta;
1664 { 2086
1665 SV *prev = SvRV (coro_current);
1666 prepare_schedule (aTHX_ ta); 2087 prepare_cede (aTHX_ &ta);
1667 api_ready (prev); 2088
2089 if (ecb_expect_true (ta.prev != ta.next))
2090 {
2091 TRANSFER (ta, 1);
1668 return 1; 2092 return 1;
1669 } 2093 }
1670 else 2094 else
1671 return 0; 2095 return 0;
1672} 2096}
1673 2097
1674static void
1675api_schedule (void)
1676{
1677 dTHX;
1678 struct transfer_args ta;
1679
1680 prepare_schedule (aTHX_ &ta);
1681 TRANSFER (ta, 1);
1682}
1683
1684static int 2098static int
1685api_cede (void) 2099api_cede_notself (pTHX)
1686{ 2100{
1687 dTHX; 2101 if (coro_nready)
2102 {
1688 struct transfer_args ta; 2103 struct coro_transfer_args ta;
1689 2104
1690 prepare_cede (aTHX_ &ta); 2105 prepare_cede_notself (aTHX_ &ta);
1691
1692 if (expect_true (ta.prev != ta.next))
1693 {
1694 TRANSFER (ta, 1); 2106 TRANSFER (ta, 1);
1695 return 1; 2107 return 1;
1696 } 2108 }
1697 else 2109 else
1698 return 0; 2110 return 0;
1699} 2111}
1700 2112
1701static int 2113static void
1702api_cede_notself (void)
1703{
1704 dTHX;
1705 struct transfer_args ta;
1706
1707 if (prepare_cede_notself (aTHX_ &ta))
1708 {
1709 TRANSFER (ta, 1);
1710 return 1;
1711 }
1712 else
1713 return 0;
1714}
1715
1716static void
1717api_trace (SV *coro_sv, int flags) 2114api_trace (pTHX_ SV *coro_sv, int flags)
1718{ 2115{
1719 dTHX;
1720 struct coro *coro = SvSTATE (coro_sv); 2116 struct coro *coro = SvSTATE (coro_sv);
2117
2118 if (coro->flags & CF_RUNNING)
2119 croak ("cannot enable tracing on a running coroutine, caught");
1721 2120
1722 if (flags & CC_TRACE) 2121 if (flags & CC_TRACE)
1723 { 2122 {
1724 if (!coro->cctx) 2123 if (!coro->cctx)
1725 coro->cctx = cctx_new_run (); 2124 coro->cctx = cctx_new_run ();
1726 else if (!(coro->cctx->flags & CC_TRACE)) 2125 else if (!(coro->cctx->flags & CC_TRACE))
1727 croak ("cannot enable tracing on coroutine with custom stack"); 2126 croak ("cannot enable tracing on coroutine with custom stack, caught");
1728 2127
1729 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2128 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1730 } 2129 }
1731 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2130 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1732 { 2131 {
… …
1737 else 2136 else
1738 coro->slot->runops = RUNOPS_DEFAULT; 2137 coro->slot->runops = RUNOPS_DEFAULT;
1739 } 2138 }
1740} 2139}
1741 2140
1742#if 0 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
1743static int 2178static int
1744coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2179slf_check_join (pTHX_ struct CoroSLF *frame)
1745{ 2180{
1746 AV *padlist; 2181 struct coro *coro = (struct coro *)frame->data;
1747 AV *av = (AV *)mg->mg_obj;
1748 2182
1749 abort (); 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);
1750 2191
1751 return 0; 2192 return 0;
1752} 2193}
1753 2194
1754static MGVTBL coro_gensub_vtbl = { 2195static void
1755 0, 0, 0, 0, 2196slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1756 coro_gensub_free 2197{
1757}; 2198 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
1758#endif 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}
1759 2990
1760/*****************************************************************************/ 2991/*****************************************************************************/
1761/* PerlIO::cede */ 2992/* PerlIO::cede */
1762 2993
1763typedef struct 2994typedef struct
1764{ 2995{
1765 PerlIOBuf base; 2996 PerlIOBuf base;
1766 NV next, every; 2997 NV next, every;
1767} PerlIOCede; 2998} PerlIOCede;
1768 2999
1769static IV 3000static IV ecb_cold
1770PerlIOCede_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)
1771{ 3002{
1772 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3003 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1773 3004
1774 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3005 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1775 self->next = nvtime () + self->every; 3006 self->next = nvtime () + self->every;
1776 3007
1777 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3008 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1778} 3009}
1779 3010
1780static SV * 3011static SV * ecb_cold
1781PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3012PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1782{ 3013{
1783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3014 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1784 3015
1785 return newSVnv (self->every); 3016 return newSVnv (self->every);
… …
1791 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3022 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1792 double now = nvtime (); 3023 double now = nvtime ();
1793 3024
1794 if (now >= self->next) 3025 if (now >= self->next)
1795 { 3026 {
1796 api_cede (); 3027 api_cede (aTHX);
1797 self->next = now + self->every; 3028 self->next = now + self->every;
1798 } 3029 }
1799 3030
1800 return PerlIOBuf_flush (aTHX_ f); 3031 return PerlIOBuf_flush (aTHX_ f);
1801} 3032}
… …
1831 PerlIOBuf_get_cnt, 3062 PerlIOBuf_get_cnt,
1832 PerlIOBuf_set_ptrcnt, 3063 PerlIOBuf_set_ptrcnt,
1833}; 3064};
1834 3065
1835/*****************************************************************************/ 3066/*****************************************************************************/
3067/* Coro::Semaphore & Coro::Signal */
1836 3068
1837static const CV *ssl_cv; /* for quick consistency check */
1838
1839static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1840static SV *ssl_arg0;
1841static SV *ssl_arg1;
1842
1843/* this restores the stack in the case we patched the entersub, to */
1844/* recreate the stack frame as perl will on following calls */
1845/* since entersub cleared the stack */
1846static OP * 3069static SV *
1847pp_restore (pTHX) 3070coro_waitarray_new (pTHX_ int count)
3071{
3072 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3073 AV *av = newAV ();
3074 SV **ary;
3075
3076 /* unfortunately, building manually saves memory */
3077 Newx (ary, 2, SV *);
3078 AvALLOC (av) = ary;
3079#if PERL_VERSION_ATLEAST (5,10,0)
3080 AvARRAY (av) = ary;
3081#else
3082 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3083 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3084 SvPVX ((SV *)av) = (char *)ary;
3085#endif
3086 AvMAX (av) = 1;
3087 AvFILLp (av) = 0;
3088 ary [0] = newSViv (count);
3089
3090 return newRV_noinc ((SV *)av);
3091}
3092
3093/* semaphore */
3094
3095static void
3096coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
3097{
3098 SV *count_sv = AvARRAY (av)[0];
3099 IV count = SvIVX (count_sv);
3100
3101 count += adjust;
3102 SvIVX (count_sv) = count;
3103
3104 /* now wake up as many waiters as are expected to lock */
3105 while (count > 0 && AvFILLp (av) > 0)
3106 {
3107 SV *cb;
3108
3109 /* swap first two elements so we can shift a waiter */
3110 AvARRAY (av)[0] = AvARRAY (av)[1];
3111 AvARRAY (av)[1] = count_sv;
3112 cb = av_shift (av);
3113
3114 if (SvOBJECT (cb))
3115 {
3116 api_ready (aTHX_ cb);
3117 --count;
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 }
3127
3128 SvREFCNT_dec_NN (cb);
3129 }
3130}
3131
3132static void
3133coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
3134{
3135 /* call $sem->adjust (0) to possibly wake up some other waiters */
3136 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
3137}
3138
3139static int
3140slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
3141{
3142 AV *av = (AV *)frame->data;
3143 SV *count_sv = AvARRAY (av)[0];
3144 SV *coro_hv = SvRV (coro_current);
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 }
3156 else if (SvIVX (count_sv) > 0)
3157 {
3158 if (acquire)
3159 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3160 else
3161 coro_semaphore_adjust (aTHX_ av, 0);
3162
3163 return 0;
3164 }
3165 else
3166 {
3167 int i;
3168 /* if we were woken up but can't down, we look through the whole */
3169 /* waiters list and only add us if we aren't in there already */
3170 /* this avoids some degenerate memory usage cases */
3171 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
3172 if (AvARRAY (av)[i] == coro_hv)
3173 return 1;
3174
3175 av_push (av, SvREFCNT_inc (coro_hv));
3176 return 1;
3177 }
3178}
3179
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
3193slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3194{
3195 AV *av = (AV *)SvRV (arg [0]);
3196
3197 if (SvIVX (AvARRAY (av)[0]) > 0)
3198 {
3199 frame->data = (void *)av;
3200 frame->prepare = prepare_nop;
3201 }
3202 else
3203 {
3204 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
3205
3206 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
3207 frame->prepare = prepare_schedule;
3208 /* to avoid race conditions when a woken-up coro gets terminated */
3209 /* we arrange for a temporary on_destroy that calls adjust (0) */
3210 frame->destroy = coro_semaphore_destroy;
3211 }
3212}
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);
3218 frame->check = slf_check_semaphore_down;
3219}
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 }
3323}
3324
3325/*****************************************************************************/
3326/* Coro::AIO */
3327
3328#define CORO_MAGIC_type_aio PERL_MAGIC_ext
3329
3330/* helper storage struct */
3331struct io_state
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
3498static SV *
3499coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3500{
3501 SV *coro_sv;
3502 struct coro *coro;
3503 MAGIC *mg;
3504 HV *hv;
3505 SV *cb;
3506 int i;
3507
3508 if (argc > 0)
3509 {
3510 cb = s_get_cv_croak (argv [0]);
3511
3512 if (!is_coro)
3513 {
3514 if (CvISXSUB (cb))
3515 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3516
3517 if (!CvROOT (cb))
3518 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3519 }
3520 }
3521
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)
1848{ 3562{
1849 dSP; 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);
1850 3587
1851 PUSHMARK (SP); 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;
1852 3593
1853 EXTEND (SP, 3); 3594 save = POPs; save_ptr = SvPVbyte (save, save_len);
1854 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 3595 load = POPs; load_ptr = SvPVbyte (load, load_len);
1855 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1856 PUSHs ((SV *)CvGV (ssl_cv));
1857 3596
1858 RETURNOP (ssl_restore.op_first); 3597 map_len = load_len + save_len + 16;
1859}
1860 3598
1861/* declare prototype */ 3599 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1862XS(XS_Coro__State__set_stacklevel);
1863 3600
1864#define OPpENTERSUB_SSL 15 3601 if (map_base == (char *)MAP_FAILED)
3602 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1865 3603
1866static OP * 3604 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
1867pp_set_stacklevel (pTHX)
1868{
1869 dSP;
1870 struct transfer_args ta;
1871 SV **arg = PL_stack_base + TOPMARK + 1;
1872 int items = SP - arg; /* args without function object */
1873 3605
1874 /* do a quick consistency check on the "function" object, and if it isn't */ 3606 load_perl_slots = (load_save_perl_slots_type)map_base;
1875 /* for us, divert to the real entersub */ 3607 memcpy (map_base, load_ptr, load_len);
1876 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1877 return PL_ppaddr[OP_ENTERSUB](aTHX);
1878 3608
1879 /* pop args */ 3609 map_base += (load_len + 15) & ~15;
1880 SP = PL_stack_base + POPMARK;
1881 3610
1882 if (!(PL_op->op_flags & OPf_STACKED)) 3611 save_perl_slots = (load_save_perl_slots_type)map_base;
1883 { 3612 memcpy (map_base, save_ptr, save_len);
1884 /* ampersand-form of call, use @_ instead of stack */ 3613
1885 AV *av = GvAV (PL_defgv); 3614 /* we are good citizens and try to make the page read-only, so the evil evil */
1886 arg = AvARRAY (av); 3615 /* hackers might have it a bit more difficult */
1887 items = AvFILLp (av) + 1; 3616 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
1888 }
1889 3617
1890 PUTBACK; 3618 PUTBACK;
1891 switch (PL_op->op_private & OPpENTERSUB_SSL) 3619 eval_pv ("undef &Coro::State::_jit", 1);
1892 {
1893 case 0:
1894 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1895 break;
1896
1897 case 1:
1898 if (items != 2)
1899 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1900
1901 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1902 break;
1903
1904 case 2:
1905 prepare_schedule (aTHX_ &ta);
1906 break;
1907
1908 case 3:
1909 prepare_cede (aTHX_ &ta);
1910 break;
1911
1912 case 4:
1913 if (!prepare_cede_notself (aTHX_ &ta))
1914 goto skip;
1915
1916 break;
1917 }
1918
1919 TRANSFER (ta, 0);
1920 SPAGAIN;
1921
1922skip:
1923 PUTBACK;
1924 SSL_TAIL;
1925 SPAGAIN;
1926 RETURN;
1927} 3620}
3621
3622#endif
1928 3623
1929MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3624MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1930 3625
1931PROTOTYPES: DISABLE 3626PROTOTYPES: DISABLE
1932 3627
1933# these not obviously related functions are all rolled into the same xs
1934# function to increase chances that they all will call transfer with the same
1935# stack offset
1936void
1937_set_stacklevel (...)
1938 ALIAS:
1939 Coro::State::transfer = 1
1940 Coro::schedule = 2
1941 Coro::cede = 3
1942 Coro::cede_notself = 4
1943 CODE:
1944{
1945 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1946
1947 assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
1948 ssl_cv = cv;
1949
1950 /* we patch the op, and then re-run the whole call */
1951 /* we have to put some dummy argument on the stack for this to work */
1952 ssl_restore.op_next = (OP *)&ssl_restore;
1953 ssl_restore.op_type = OP_NULL;
1954 ssl_restore.op_ppaddr = pp_restore;
1955 ssl_restore.op_first = PL_op;
1956
1957 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1958 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1959
1960 PL_op->op_ppaddr = pp_set_stacklevel;
1961 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1962
1963 PL_op = (OP *)&ssl_restore;
1964}
1965
1966BOOT: 3628BOOT:
1967{ 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"
1968#ifdef USE_ITHREADS 3632#ifdef USE_ITHREADS
1969 MUTEX_INIT (&coro_lock);
1970# if CORO_PTHREAD 3633# if CORO_PTHREAD
1971 coro_thx = PERL_GET_CONTEXT; 3634 coro_thx = PERL_GET_CONTEXT;
1972# endif 3635# endif
1973#endif 3636#endif
1974 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 ();
1975 3645
1976 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3646 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1977 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3647 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1978 3648
1979 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3649 {
1980 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3650 /*
1981 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 }
1982 3673
1983 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1984 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));
1985 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));
1986 3676
1987 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3677 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1988 3678
… …
1995 main_top_env = PL_top_env; 3685 main_top_env = PL_top_env;
1996 3686
1997 while (main_top_env->je_prev) 3687 while (main_top_env->je_prev)
1998 main_top_env = main_top_env->je_prev; 3688 main_top_env = main_top_env->je_prev;
1999 3689
2000 coroapi.ver = CORO_API_VERSION;
2001 coroapi.rev = CORO_API_REVISION;
2002 coroapi.transfer = api_transfer;
2003
2004 { 3690 {
2005 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3691 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2006 3692
2007 if (!svp) croak ("Time::HiRes is required"); 3693 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2008 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3694 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2009 3695
2010 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3696 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3697 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2011 } 3698 }
2012 3699
3700 coroapi.ver = CORO_API_VERSION;
3701 coroapi.rev = CORO_API_REVISION;
3702
3703 coroapi.transfer = api_transfer;
3704
3705 coroapi.sv_state = SvSTATE_;
3706 coroapi.execute_slf = api_execute_slf;
3707 coroapi.prepare_nop = prepare_nop;
3708 coroapi.prepare_schedule = prepare_schedule;
3709 coroapi.prepare_cede = prepare_cede;
3710 coroapi.prepare_cede_notself = prepare_cede_notself;
3711
3712 time_init (aTHX);
3713
2013 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
2014} 3720}
2015 3721
2016SV * 3722SV *
2017new (char *klass, ...) 3723new (SV *klass, ...)
3724 ALIAS:
3725 Coro::new = 1
2018 CODE: 3726 CODE:
2019{ 3727 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2020 struct coro *coro;
2021 MAGIC *mg;
2022 HV *hv;
2023 int i;
2024
2025 Newz (0, coro, 1, struct coro);
2026 coro->args = newAV ();
2027 coro->flags = CF_NEW;
2028
2029 if (coro_first) coro_first->prev = coro;
2030 coro->next = coro_first;
2031 coro_first = coro;
2032
2033 coro->hv = hv = newHV ();
2034 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2035 mg->mg_flags |= MGf_DUP;
2036 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2037
2038 av_extend (coro->args, items - 1);
2039 for (i = 1; i < items; i++)
2040 av_push (coro->args, newSVsv (ST (i)));
2041}
2042 OUTPUT:
2043 RETVAL
2044
2045bool
2046_destroy (SV *coro_sv)
2047 CODE:
2048 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2049 OUTPUT: 3728 OUTPUT:
2050 RETVAL 3729 RETVAL
2051 3730
2052void 3731void
2053_exit (int code) 3732transfer (...)
2054 PROTOTYPE: $ 3733 PROTOTYPE: $$
2055 CODE: 3734 CODE:
2056 _exit (code); 3735 CORO_EXECUTE_SLF_XS (slf_init_transfer);
3736
3737SV *
3738clone (Coro::State coro)
3739 CODE:
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}
3753 OUTPUT:
3754 RETVAL
2057 3755
2058int 3756int
2059cctx_stacksize (int new_stacksize = 0) 3757cctx_stacksize (int new_stacksize = 0)
3758 PROTOTYPE: ;$
2060 CODE: 3759 CODE:
2061 RETVAL = cctx_stacksize; 3760 RETVAL = cctx_stacksize;
2062 if (new_stacksize) 3761 if (new_stacksize)
2063 { 3762 {
2064 cctx_stacksize = new_stacksize; 3763 cctx_stacksize = new_stacksize;
… …
2067 OUTPUT: 3766 OUTPUT:
2068 RETVAL 3767 RETVAL
2069 3768
2070int 3769int
2071cctx_max_idle (int max_idle = 0) 3770cctx_max_idle (int max_idle = 0)
3771 PROTOTYPE: ;$
2072 CODE: 3772 CODE:
2073 RETVAL = cctx_max_idle; 3773 RETVAL = cctx_max_idle;
2074 if (max_idle > 1) 3774 if (max_idle > 1)
2075 cctx_max_idle = max_idle; 3775 cctx_max_idle = max_idle;
2076 OUTPUT: 3776 OUTPUT:
2077 RETVAL 3777 RETVAL
2078 3778
2079int 3779int
2080cctx_count () 3780cctx_count ()
3781 PROTOTYPE:
2081 CODE: 3782 CODE:
2082 RETVAL = cctx_count; 3783 RETVAL = cctx_count;
2083 OUTPUT: 3784 OUTPUT:
2084 RETVAL 3785 RETVAL
2085 3786
2086int 3787int
2087cctx_idle () 3788cctx_idle ()
3789 PROTOTYPE:
2088 CODE: 3790 CODE:
2089 RETVAL = cctx_idle; 3791 RETVAL = cctx_idle;
2090 OUTPUT: 3792 OUTPUT:
2091 RETVAL 3793 RETVAL
2092 3794
2093void 3795void
2094list () 3796list ()
3797 PROTOTYPE:
2095 PPCODE: 3798 PPCODE:
2096{ 3799{
2097 struct coro *coro; 3800 struct coro *coro;
2098 for (coro = coro_first; coro; coro = coro->next) 3801 for (coro = coro_first; coro; coro = coro->next)
2099 if (coro->hv) 3802 if (coro->hv)
2100 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3803 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2101} 3804}
2102 3805
… …
2106 eval = 1 3809 eval = 1
2107 CODE: 3810 CODE:
2108{ 3811{
2109 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3812 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2110 { 3813 {
2111 struct coro temp; 3814 struct coro *current = SvSTATE_current;
3815 struct CoroSLF slf_save;
2112 3816
2113 if (!(coro->flags & CF_RUNNING)) 3817 if (current != coro)
2114 { 3818 {
2115 PUTBACK; 3819 PUTBACK;
2116 save_perl (aTHX_ &temp); 3820 save_perl (aTHX_ current);
2117 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;
2118 } 3832 }
2119 3833
2120 {
2121 dSP;
2122 ENTER;
2123 SAVETMPS;
2124 PUTBACK;
2125 PUSHSTACK; 3834 PUSHSTACK;
3835
2126 PUSHMARK (SP); 3836 PUSHMARK (SP);
3837 PUTBACK;
2127 3838
2128 if (ix) 3839 if (ix)
2129 eval_sv (coderef, 0); 3840 eval_sv (coderef, 0);
2130 else 3841 else
2131 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3842 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2132 3843
2133 POPSTACK; 3844 POPSTACK;
2134 SPAGAIN; 3845 SPAGAIN;
2135 FREETMPS;
2136 LEAVE;
2137 PUTBACK;
2138 }
2139 3846
2140 if (!(coro->flags & CF_RUNNING)) 3847 if (current != coro)
2141 { 3848 {
3849 PUTBACK;
3850 slf_frame = slf_save;
2142 save_perl (aTHX_ coro); 3851 save_perl (aTHX_ coro);
2143 load_perl (aTHX_ &temp); 3852 load_perl (aTHX_ current);
2144 SPAGAIN; 3853 SPAGAIN;
2145 } 3854 }
2146 } 3855 }
2147} 3856}
2148 3857
… …
2151 PROTOTYPE: $ 3860 PROTOTYPE: $
2152 ALIAS: 3861 ALIAS:
2153 is_ready = CF_READY 3862 is_ready = CF_READY
2154 is_running = CF_RUNNING 3863 is_running = CF_RUNNING
2155 is_new = CF_NEW 3864 is_new = CF_NEW
2156 is_destroyed = CF_DESTROYED 3865 is_destroyed = CF_ZOMBIE
3866 is_zombie = CF_ZOMBIE
3867 is_suspended = CF_SUSPENDED
2157 CODE: 3868 CODE:
2158 RETVAL = boolSV (coro->flags & ix); 3869 RETVAL = boolSV (coro->flags & ix);
2159 OUTPUT: 3870 OUTPUT:
2160 RETVAL 3871 RETVAL
2161 3872
2162void 3873void
2163throw (Coro::State self, SV *throw = &PL_sv_undef) 3874throw (SV *self, SV *exception = &PL_sv_undef)
2164 PROTOTYPE: $;$ 3875 PROTOTYPE: $;$
2165 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;
2166 SvREFCNT_dec (self->throw); 3881 SvREFCNT_dec (*exceptionp);
2167 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3882 SvGETMAGIC (exception);
3883 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3884
3885 api_ready (aTHX_ self);
3886}
2168 3887
2169void 3888void
2170api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3889api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3890 PROTOTYPE: $;$
3891 C_ARGS: aTHX_ coro, flags
2171 3892
2172SV * 3893SV *
2173has_cctx (Coro::State coro) 3894has_cctx (Coro::State coro)
2174 PROTOTYPE: $ 3895 PROTOTYPE: $
2175 CODE: 3896 CODE:
2176 RETVAL = boolSV (!!coro->cctx); 3897 /* maybe manage the running flag differently */
3898 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2177 OUTPUT: 3899 OUTPUT:
2178 RETVAL 3900 RETVAL
2179 3901
2180int 3902int
2181is_traced (Coro::State coro) 3903is_traced (Coro::State coro)
… …
2199 OUTPUT: 3921 OUTPUT:
2200 RETVAL 3922 RETVAL
2201 3923
2202void 3924void
2203force_cctx () 3925force_cctx ()
3926 PROTOTYPE:
2204 CODE: 3927 CODE:
2205 struct coro *coro = SvSTATE (coro_current);
2206 coro->cctx->idle_sp = 0; 3928 cctx_current->idle_sp = 0;
2207 3929
2208void 3930void
2209swap_defsv (Coro::State self) 3931swap_defsv (Coro::State self)
2210 PROTOTYPE: $ 3932 PROTOTYPE: $
2211 ALIAS: 3933 ALIAS:
2212 swap_defav = 1 3934 swap_defav = 1
2213 CODE: 3935 CODE:
2214 if (!self->slot) 3936 if (!self->slot)
2215 croak ("cannot swap state with coroutine that has no saved state"); 3937 croak ("cannot swap state with coroutine that has no saved state,");
2216 else 3938 else
2217 { 3939 {
2218 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3940 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2219 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3941 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2220 3942
2221 SV *tmp = *src; *src = *dst; *dst = tmp; 3943 SV *tmp = *src; *src = *dst; *dst = tmp;
2222 } 3944 }
2223 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
2224MODULE = Coro::State PACKAGE = Coro 4036MODULE = Coro::State PACKAGE = Coro
2225 4037
2226BOOT: 4038BOOT:
2227{ 4039{
2228 int i; 4040 if (SVt_LAST > 32)
4041 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2229 4042
2230 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2231 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4043 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2232 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4044 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2233 4045 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2234 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 4046 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2235 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 */
2236 4056
2237 coro_stash = gv_stashpv ("Coro", TRUE); 4057 coro_stash = gv_stashpv ("Coro", TRUE);
2238 4058
2239 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4059 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2240 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4060 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2241 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4061 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2242 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4062 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2243 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4063 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2244 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4064 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2245
2246 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2247 coro_ready[i] = newAV ();
2248 4065
2249 { 4066 {
2250 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4067 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2251 4068
2252 coroapi.schedule = api_schedule; 4069 coroapi.schedule = api_schedule;
4070 coroapi.schedule_to = api_schedule_to;
2253 coroapi.cede = api_cede; 4071 coroapi.cede = api_cede;
2254 coroapi.cede_notself = api_cede_notself; 4072 coroapi.cede_notself = api_cede_notself;
2255 coroapi.ready = api_ready; 4073 coroapi.ready = api_ready;
2256 coroapi.is_ready = api_is_ready; 4074 coroapi.is_ready = api_is_ready;
2257 coroapi.nready = &coro_nready; 4075 coroapi.nready = coro_nready;
2258 coroapi.current = coro_current; 4076 coroapi.current = coro_current;
2259 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
2260 GCoroAPI = &coroapi; 4082 /*GCoroAPI = &coroapi;*/
2261 sv_setiv (sv, (IV)&coroapi); 4083 sv_setiv (sv, PTR2IV (&coroapi));
2262 SvREADONLY_on (sv); 4084 SvREADONLY_on (sv);
2263 } 4085 }
2264} 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
4126
4127void
4128schedule (...)
4129 CODE:
4130 CORO_EXECUTE_SLF_XS (slf_init_schedule);
4131
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
4143cede (...)
4144 CODE:
4145 CORO_EXECUTE_SLF_XS (slf_init_cede);
4146
4147void
4148cede_notself (...)
4149 CODE:
4150 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2265 4151
2266void 4152void
2267_set_current (SV *current) 4153_set_current (SV *current)
2268 PROTOTYPE: $ 4154 PROTOTYPE: $
2269 CODE: 4155 CODE:
2270 SvREFCNT_dec (SvRV (coro_current)); 4156 SvREFCNT_dec_NN (SvRV (coro_current));
2271 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4157 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2272 4158
2273void 4159void
2274_set_readyhook (SV *hook) 4160_set_readyhook (SV *hook)
2275 PROTOTYPE: $ 4161 PROTOTYPE: $
2276 CODE: 4162 CODE:
2277 LOCK;
2278 SvREFCNT_dec (coro_readyhook); 4163 SvREFCNT_dec (coro_readyhook);
4164 SvGETMAGIC (hook);
4165 if (SvOK (hook))
4166 {
2279 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4167 coro_readyhook = newSVsv (hook);
2280 UNLOCK; 4168 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4169 }
4170 else
4171 {
4172 coro_readyhook = 0;
4173 CORO_READYHOOK = 0;
4174 }
2281 4175
2282int 4176int
2283prio (Coro::State coro, int newprio = 0) 4177prio (Coro::State coro, int newprio = 0)
4178 PROTOTYPE: $;$
2284 ALIAS: 4179 ALIAS:
2285 nice = 1 4180 nice = 1
2286 CODE: 4181 CODE:
2287{ 4182{
2288 RETVAL = coro->prio; 4183 RETVAL = coro->prio;
… …
2290 if (items > 1) 4185 if (items > 1)
2291 { 4186 {
2292 if (ix) 4187 if (ix)
2293 newprio = coro->prio - newprio; 4188 newprio = coro->prio - newprio;
2294 4189
2295 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4190 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2296 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4191 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2297 4192
2298 coro->prio = newprio; 4193 coro->prio = newprio;
2299 } 4194 }
2300} 4195}
2301 OUTPUT: 4196 OUTPUT:
… …
2303 4198
2304SV * 4199SV *
2305ready (SV *self) 4200ready (SV *self)
2306 PROTOTYPE: $ 4201 PROTOTYPE: $
2307 CODE: 4202 CODE:
2308 RETVAL = boolSV (api_ready (self)); 4203 RETVAL = boolSV (api_ready (aTHX_ self));
2309 OUTPUT: 4204 OUTPUT:
2310 RETVAL 4205 RETVAL
2311 4206
2312int 4207int
2313nready (...) 4208nready (...)
… …
2315 CODE: 4210 CODE:
2316 RETVAL = coro_nready; 4211 RETVAL = coro_nready;
2317 OUTPUT: 4212 OUTPUT:
2318 RETVAL 4213 RETVAL
2319 4214
2320# for async_pool speedup
2321void 4215void
2322_pool_1 (SV *cb) 4216suspend (Coro::State self)
4217 PROTOTYPE: $
2323 CODE: 4218 CODE:
2324{ 4219 self->flags |= CF_SUSPENDED;
2325 struct coro *coro = SvSTATE (coro_current);
2326 HV *hv = (HV *)SvRV (coro_current);
2327 AV *defav = GvAV (PL_defgv);
2328 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2329 AV *invoke_av;
2330 int i, len;
2331 4220
2332 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)
2333 { 4247 {
2334 SV *old = PL_diehook; 4248 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2335 PL_diehook = 0; 4249 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2336 SvREFCNT_dec (old); 4250 SvREFCNT_dec_NN (sv);
2337 croak ("\3async_pool terminate\2\n");
2338 } 4251 }
2339 4252
2340 SvREFCNT_dec (coro->saved_deffh);
2341 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2342
2343 hv_store (hv, "desc", sizeof ("desc") - 1,
2344 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2345
2346 invoke_av = (AV *)SvRV (invoke);
2347 len = av_len (invoke_av);
2348
2349 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2350
2351 if (len > 0)
2352 { 4253 {
2353 av_fill (defav, len - 1); 4254 struct coro *coro = SvSTATE_hv (hv);
2354 for (i = 0; i < len; ++i) 4255
2355 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;
2356 } 4260 }
2357 4261
4262 api_ready (aTHX_ (SV *)hv);
4263
4264 if (GIMME_V != G_VOID)
4265 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4266 else
2358 SvREFCNT_dec (invoke); 4267 SvREFCNT_dec_NN (hv);
2359} 4268}
2360 4269
2361void 4270SV *
2362_pool_2 (SV *cb) 4271rouse_cb ()
4272 PROTOTYPE:
2363 CODE: 4273 CODE:
2364{ 4274 RETVAL = coro_new_rouse_cb (aTHX);
2365 struct coro *coro = SvSTATE (coro_current);
2366
2367 sv_setsv (cb, &PL_sv_undef);
2368
2369 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2370 coro->saved_deffh = 0;
2371
2372 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2373 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2374 {
2375 SV *old = PL_diehook;
2376 PL_diehook = 0;
2377 SvREFCNT_dec (old);
2378 croak ("\3async_pool terminate\2\n");
2379 }
2380
2381 av_clear (GvAV (PL_defgv));
2382 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2383 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2384
2385 coro->prio = 0;
2386
2387 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2388 api_trace (coro_current, 0);
2389
2390 av_push (av_async_pool, newSVsv (coro_current));
2391}
2392
2393#if 0
2394
2395void
2396_generator_call (...)
2397 PROTOTYPE: @
2398 PPCODE:
2399 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2400 xxxx
2401 abort ();
2402
2403SV *
2404gensub (SV *sub, ...)
2405 PROTOTYPE: &;@
2406 CODE:
2407{
2408 struct coro *coro;
2409 MAGIC *mg;
2410 CV *xcv;
2411 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2412 int i;
2413
2414 CvGV (ncv) = CvGV (cv);
2415 CvFILE (ncv) = CvFILE (cv);
2416
2417 Newz (0, coro, 1, struct coro);
2418 coro->args = newAV ();
2419 coro->flags = CF_NEW;
2420
2421 av_extend (coro->args, items - 1);
2422 for (i = 1; i < items; i++)
2423 av_push (coro->args, newSVsv (ST (i)));
2424
2425 CvISXSUB_on (ncv);
2426 CvXSUBANY (ncv).any_ptr = (void *)coro;
2427
2428 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2429
2430 CvXSUB (ncv) = CvXSUB (xcv);
2431 CvANON_on (ncv);
2432
2433 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2434 RETVAL = newRV_noinc ((SV *)ncv);
2435}
2436 OUTPUT: 4275 OUTPUT:
2437 RETVAL 4276 RETVAL
2438 4277
2439#endif
2440
2441
2442MODULE = Coro::State PACKAGE = Coro::AIO
2443
2444void 4278void
2445_get_state (SV *self) 4279rouse_wait (...)
4280 PROTOTYPE: ;$
2446 PPCODE: 4281 PPCODE:
2447{ 4282 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2448 AV *defav = GvAV (PL_defgv);
2449 AV *av = newAV ();
2450 int i;
2451 SV *data_sv = newSV (sizeof (struct io_state));
2452 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2453 SvCUR_set (data_sv, sizeof (struct io_state));
2454 SvPOK_only (data_sv);
2455
2456 data->errorno = errno;
2457 data->laststype = PL_laststype;
2458 data->laststatval = PL_laststatval;
2459 data->statcache = PL_statcache;
2460
2461 av_extend (av, AvFILLp (defav) + 1 + 1);
2462
2463 for (i = 0; i <= AvFILLp (defav); ++i)
2464 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2465
2466 av_push (av, data_sv);
2467
2468 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2469
2470 api_ready (self);
2471}
2472 4283
2473void 4284void
2474_set_state (SV *state) 4285on_enter (SV *block)
4286 ALIAS:
4287 on_leave = 1
2475 PROTOTYPE: $ 4288 PROTOTYPE: &
4289 CODE:
4290{
4291 struct coro *coro = SvSTATE_current;
4292 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4293
4294 block = s_get_cv_croak (block);
4295
4296 if (!*avp)
4297 *avp = newAV ();
4298
4299 av_push (*avp, SvREFCNT_inc (block));
4300
4301 if (!ix)
4302 on_enterleave_call (aTHX_ block);
4303
4304 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4305 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4306 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4307}
4308
4309
4310MODULE = Coro::State PACKAGE = PerlIO::cede
4311
4312BOOT:
4313 PerlIO_define_layer (aTHX_ &PerlIO_cede);
4314
4315
4316MODULE = Coro::State PACKAGE = Coro::Semaphore
4317
4318SV *
4319new (SV *klass, SV *count = 0)
4320 CODE:
4321{
4322 int semcnt = 1;
4323
4324 if (count)
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 );
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);
4345 OUTPUT:
4346 RETVAL
4347
4348SV *
4349count (SV *self)
4350 CODE:
4351 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
4352 OUTPUT:
4353 RETVAL
4354
4355void
4356up (SV *self)
4357 CODE:
4358 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
4359
4360void
4361adjust (SV *self, int adjust)
4362 CODE:
4363 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4364
4365void
4366down (...)
4367 CODE:
4368 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4369
4370void
4371wait (...)
4372 CODE:
4373 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
4374
4375void
4376try (SV *self)
4377 PPCODE:
4378{
4379 AV *av = (AV *)SvRV (self);
4380 SV *count_sv = AvARRAY (av)[0];
4381 IV count = SvIVX (count_sv);
4382
4383 if (count > 0)
4384 {
4385 --count;
4386 SvIVX (count_sv) = count;
4387 XSRETURN_YES;
4388 }
4389 else
4390 XSRETURN_NO;
4391}
4392
4393void
4394waiters (SV *self)
2476 PPCODE: 4395 PPCODE:
2477{ 4396{
4397 AV *av = (AV *)SvRV (self);
4398 int wcount = AvFILLp (av) + 1 - 1;
4399
4400 if (GIMME_V == G_SCALAR)
4401 XPUSHs (sv_2mortal (newSViv (wcount)));
4402 else
4403 {
4404 int i;
4405 EXTEND (SP, wcount);
4406 for (i = 1; i <= wcount; ++i)
4407 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
4408 }
4409}
4410
4411MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4412
4413void
4414_may_delete (SV *sem, int count, unsigned int extra_refs)
4415 PPCODE:
4416{
2478 AV *av = (AV *)SvRV (state); 4417 AV *av = (AV *)SvRV (sem);
2479 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2480 int i;
2481 4418
2482 errno = data->errorno; 4419 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2483 PL_laststype = data->laststype; 4420 && AvFILLp (av) == 0 /* no waiters, just count */
2484 PL_laststatval = data->laststatval; 4421 && SvIV (AvARRAY (av)[0]) == count)
2485 PL_statcache = data->statcache; 4422 XSRETURN_YES;
2486 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
2487 EXTEND (SP, AvFILLp (av)); 4458 if (AvFILLp (av))
2488 for (i = 0; i < AvFILLp (av); ++i) 4459 coro_signal_wake (aTHX_ av, 1);
2489 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 4460 else
4461 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2490} 4462}
4463
4464IV
4465awaited (SV *self)
4466 CODE:
4467 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4468 OUTPUT:
4469 RETVAL
2491 4470
2492 4471
2493MODULE = Coro::State PACKAGE = Coro::AnyEvent 4472MODULE = Coro::State PACKAGE = Coro::AnyEvent
2494 4473
2495BOOT: 4474BOOT:
2496 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 4475 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2497 4476
2498SV * 4477void
2499_schedule (...) 4478_schedule (...)
2500 PROTOTYPE: @
2501 CODE: 4479 CODE:
2502{ 4480{
2503 static int incede; 4481 static int incede;
2504 4482
2505 api_cede_notself (); 4483 api_cede_notself (aTHX);
2506 4484
2507 ++incede; 4485 ++incede;
2508 while (coro_nready >= incede && api_cede ()) 4486 while (coro_nready >= incede && api_cede (aTHX))
2509 ; 4487 ;
2510 4488
2511 sv_setsv (sv_activity, &PL_sv_undef); 4489 sv_setsv (sv_activity, &PL_sv_undef);
2512 if (coro_nready >= incede) 4490 if (coro_nready >= incede)
2513 { 4491 {
2514 PUSHMARK (SP); 4492 PUSHMARK (SP);
2515 PUTBACK; 4493 PUTBACK;
2516 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4494 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2517 SPAGAIN;
2518 } 4495 }
2519 4496
2520 --incede; 4497 --incede;
2521} 4498}
2522 4499
2523 4500
2524MODULE = Coro::State PACKAGE = PerlIO::cede 4501MODULE = Coro::State PACKAGE = Coro::AIO
2525 4502
2526BOOT: 4503void
2527 PerlIO_define_layer (aTHX_ &PerlIO_cede); 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}
2528 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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