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Comparing Coro/Coro/State.xs (file contents):
Revision 1.285 by root, Mon Nov 17 04:17:20 2008 UTC vs.
Revision 1.472 by root, Thu Aug 31 16:24:19 2017 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SvREFCNT_dec_NN
28 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
29#endif
30
31#ifndef SvREFCNT_inc_NN
32 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
33#endif
34
35#ifndef SVs_PADSTALE
36# define SVs_PADSTALE 0
37#endif
38
39#ifdef PadARRAY
40# define NEWPADAPI 1
41# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
42#else
43typedef AV PADNAMELIST;
44# if !PERL_VERSION_ATLEAST(5,8,0)
45typedef AV PADLIST;
46typedef AV PAD;
47# endif
48# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
49# define PadlistMAX(pl) AvFILLp (pl)
50# define PadlistNAMES(pl) (*PadlistARRAY (pl))
51# define PadARRAY AvARRAY
52# define PadMAX AvFILLp
53# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
54#endif
55#ifndef PadnamelistREFCNT
56# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
57#endif
58#ifndef PadnamelistREFCNT_dec
59# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
60#endif
61
62/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
63/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
64#if PERL_VERSION_ATLEAST(5,19,0)
65# define SVt_BIND SVt_IV
66#endif
67
68#if defined(_WIN32)
69# undef HAS_GETTIMEOFDAY
18# undef setjmp 70# undef setjmp
19# undef longjmp 71# undef longjmp
20# undef _exit 72# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 73# define setjmp _setjmp /* deep magic */
22#else 74#else
23# include <inttypes.h> /* most portable stdint.h */ 75# include <inttypes.h> /* most portable stdint.h */
24#endif 76#endif
25 77
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 78/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 79static int cctx_max_idle = 4;
55 80
56#define PERL_VERSION_ATLEAST(a,b,c) \ 81#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 82# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD
108#endif
109
110#ifndef CORO_STACKGUARD
111# define CORO_STACKGUARD 0
112#endif 83#endif
113 84
114/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 88#endif
118 89
119/* The next macros try to return the current stack pointer, in an as 90/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 91 * portable way as possible. */
121#if __GNUC__ >= 4 92#if __GNUC__ >= 4
93# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 94# define STACKLEVEL __builtin_frame_address (0)
123#else 95#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 96# define dSTACKLEVEL volatile void *stacklevel
97# define STACKLEVEL ((void *)&stacklevel)
125#endif 98#endif
126 99
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 100#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 101
144#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
145 104
146#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
147# if CORO_PTHREAD 106# if CORO_PTHREAD
148static void *coro_thx; 107static void *coro_thx;
149# endif 108# endif
150#endif 109#endif
151 110
152/* helper storage struct for Coro::AIO */ 111#ifdef __linux
153struct io_state 112# include <time.h> /* for timespec */
154{ 113# include <syscall.h> /* for SYS_* */
155 AV *res; 114# ifdef SYS_clock_gettime
156 int errorno; 115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 116# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 118# endif
160}; 119#endif
120
121/* one off bugfix for perl 5.22 */
122#if PERL_VERSION_ATLEAST(5,22,0) && !PERL_VERSION_ATLEAST(5,24,0)
123# undef PadlistNAMES
124# define PadlistNAMES(pl) *((PADNAMELIST **)PadlistARRAY (pl))
125#endif
126
127#if PERL_VERSION_ATLEAST(5,24,0)
128# define SUB_ARGARRAY PL_curpad[0]
129#else
130# define SUB_ARGARRAY (SV *)cx->blk_sub.argarray
131#endif
132
133/* perl usually suppresses asserts. for debugging, we sometimes force it to be on */
134#if 0
135# undef NDEBUG
136# include <assert.h>
137#endif
161 138
162static double (*nvtime)(); /* so why doesn't it take void? */ 139static double (*nvtime)(); /* so why doesn't it take void? */
140static void (*u2time)(pTHX_ UV ret[2]);
141
142/* we hijack an hopefully unused CV flag for our purposes */
143#define CVf_SLF 0x4000
144static OP *pp_slf (pTHX);
145static void slf_destroy (pTHX_ struct coro *coro);
163 146
164static U32 cctx_gen; 147static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 148static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 149static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 150static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 151static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 152static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 153static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 154
155static AV *av_destroy; /* destruction queue */
156static SV *sv_manager; /* the manager coro */
157static SV *sv_idle; /* $Coro::idle */
158
172static GV *irsgv; /* $/ */ 159static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 160static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 161static SV *rv_diehook;
175static SV *rv_warnhook; 162static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
177 163
178/* async_pool helper stuff */ 164/* async_pool helper stuff */
179static SV *sv_pool_rss; 165static SV *sv_pool_rss;
180static SV *sv_pool_size; 166static SV *sv_pool_size;
167static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 168static AV *av_async_pool; /* idle pool */
169static SV *sv_Coro; /* class string */
170static CV *cv_pool_handler;
182 171
183/* Coro::AnyEvent */ 172/* Coro::AnyEvent */
184static SV *sv_activity; 173static SV *sv_activity;
185 174
175/* enable processtime/realtime profiling */
176static char enable_times;
177typedef U32 coro_ts[2];
178static coro_ts time_real, time_cpu;
179static char times_valid;
180
186static struct coro_cctx *cctx_first; 181static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 182static int cctx_count, cctx_idle;
188 183
189enum { 184enum
185{
190 CC_MAPPED = 0x01, 186 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 187 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 188 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 189 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 190 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
199typedef struct coro_cctx 195typedef struct coro_cctx
200{ 196{
201 struct coro_cctx *next; 197 struct coro_cctx *next;
202 198
203 /* the stack */ 199 /* the stack */
204 void *sptr; 200 struct coro_stack stack;
205 size_t ssize;
206 201
207 /* cpu state */ 202 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 203 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
204#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 205 JMPENV *idle_te; /* same as idle_sp, but for top_env */
206#endif
210 JMPENV *top_env; 207 JMPENV *top_env;
211 coro_context cctx; 208 coro_context cctx;
212 209
213 U32 gen; 210 U32 gen;
214#if CORO_USE_VALGRIND 211#if CORO_USE_VALGRIND
215 int valgrind_id; 212 int valgrind_id;
216#endif 213#endif
217 unsigned char flags; 214 unsigned char flags;
218} coro_cctx; 215} coro_cctx;
219 216
217static coro_cctx *cctx_current; /* the currently running cctx */
218
219/*****************************************************************************/
220
221static MGVTBL coro_state_vtbl;
222
220enum { 223enum
224{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 225 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 226 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 227 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 228 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
229 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
230 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 231};
226 232
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 233/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 234typedef struct
229{ 235{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 236 #define VARx(name,expr,type) type name;
235# include "state.h" 237 #include "state.h"
236#undef VAR
237} perl_slots; 238} perl_slots;
238 239
240/* how many context stack entries do we need for perl_slots */
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 241#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 242
241/* this is a structure representing a perl-level coroutine */ 243/* this is a structure representing a perl-level coroutine */
242struct coro { 244struct coro
245{
243 /* the C coroutine allocated to this perl coroutine, if any */ 246 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 247 coro_cctx *cctx;
248
249 /* ready queue */
250 struct coro *next_ready;
245 251
246 /* state data */ 252 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 253 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 254 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 255 perl_slots *slot; /* basically the saved sp */
250 256
257 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 258 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 259 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 260 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 261
257 /* statistics */ 262 /* statistics */
258 int usecount; /* number of transfers to this coro */ 263 int usecount; /* number of transfers to this coro */
259 264
260 /* coro process data */ 265 /* coro process data */
261 int prio; 266 int prio;
262 SV *throw; /* exception to be thrown */ 267 SV *except; /* exception to be thrown */
268 SV *rouse_cb; /* last rouse callback */
269 AV *on_destroy; /* callbacks or coros to notify on destroy */
270 AV *status; /* the exit status list */
263 271
264 /* async_pool */ 272 /* async_pool */
265 SV *saved_deffh; 273 SV *saved_deffh;
274 SV *invoke_cb;
275 AV *invoke_av;
276
277 /* on_enter/on_leave */
278 AV *on_enter; AV *on_enter_xs;
279 AV *on_leave; AV *on_leave_xs;
280
281 /* swap_sv */
282 AV *swap_sv;
283
284 /* times */
285 coro_ts t_cpu, t_real;
266 286
267 /* linked list */ 287 /* linked list */
268 struct coro *next, *prev; 288 struct coro *next, *prev;
269}; 289};
270 290
271typedef struct coro *Coro__State; 291typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 292typedef struct coro *Coro__State_or_hashref;
273 293
274/* the following variables are effectively part of the perl context */ 294/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */ 295/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */ 296/* the main reason we don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */ 297static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
279 298
280/** Coro ********************************************************************/ 299/** Coro ********************************************************************/
281 300
282#define PRIO_MAX 3 301#define CORO_PRIO_MAX 3
283#define PRIO_HIGH 1 302#define CORO_PRIO_HIGH 1
284#define PRIO_NORMAL 0 303#define CORO_PRIO_NORMAL 0
285#define PRIO_LOW -1 304#define CORO_PRIO_LOW -1
286#define PRIO_IDLE -3 305#define CORO_PRIO_IDLE -3
287#define PRIO_MIN -4 306#define CORO_PRIO_MIN -4
288 307
289/* for Coro.pm */ 308/* for Coro.pm */
290static SV *coro_current; 309static SV *coro_current;
291static SV *coro_readyhook; 310static SV *coro_readyhook;
292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 311static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
312static CV *cv_coro_run;
293static struct coro *coro_first; 313static struct coro *coro_first;
294#define coro_nready coroapi.nready 314#define coro_nready coroapi.nready
295 315
316/** JIT *********************************************************************/
317
318#if CORO_JIT
319 /* APPLE doesn't have mmap though */
320 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
321 #ifndef CORO_JIT_TYPE
322 #if ECB_AMD64 && CORO_JIT_UNIXY
323 #define CORO_JIT_TYPE "amd64-unix"
324 #elif __i386 && CORO_JIT_UNIXY
325 #define CORO_JIT_TYPE "x86-unix"
326 #endif
327 #endif
328#endif
329
330#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
331 #undef CORO_JIT
332#endif
333
334#if CORO_JIT
335 typedef void (*load_save_perl_slots_type)(perl_slots *);
336 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
337#endif
338
339/** Coro::Select ************************************************************/
340
341static OP *(*coro_old_pp_sselect) (pTHX);
342static SV *coro_select_select;
343
344/* horrible hack, but if it works... */
345static OP *
346coro_pp_sselect (pTHX)
347{
348 dSP;
349 PUSHMARK (SP - 4); /* fake argument list */
350 XPUSHs (coro_select_select);
351 PUTBACK;
352
353 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
354 PL_op->op_flags |= OPf_STACKED;
355 PL_op->op_private = 0;
356 return PL_ppaddr [OP_ENTERSUB](aTHX);
357}
358
359/** time stuff **************************************************************/
360
361#ifdef HAS_GETTIMEOFDAY
362
363ecb_inline void
364coro_u2time (pTHX_ UV ret[2])
365{
366 struct timeval tv;
367 gettimeofday (&tv, 0);
368
369 ret [0] = tv.tv_sec;
370 ret [1] = tv.tv_usec;
371}
372
373ecb_inline double
374coro_nvtime (void)
375{
376 struct timeval tv;
377 gettimeofday (&tv, 0);
378
379 return tv.tv_sec + tv.tv_usec * 1e-6;
380}
381
382ecb_inline void
383time_init (pTHX)
384{
385 nvtime = coro_nvtime;
386 u2time = coro_u2time;
387}
388
389#else
390
391ecb_inline void
392time_init (pTHX)
393{
394 SV **svp;
395
396 require_pv ("Time/HiRes.pm");
397
398 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
399
400 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
401 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
402
403 nvtime = INT2PTR (double (*)(), SvIV (*svp));
404
405 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
406 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
407}
408
409#endif
410
296/** lowlevel stuff **********************************************************/ 411/** lowlevel stuff **********************************************************/
297 412
298static SV * 413static SV * ecb_noinline
299coro_get_sv (pTHX_ const char *name, int create) 414coro_get_sv (pTHX_ const char *name, int create)
300{ 415{
301#if PERL_VERSION_ATLEAST (5,10,0) 416#if PERL_VERSION_ATLEAST (5,10,0)
302 /* 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 */
303 get_sv (name, create); 418 get_sv (name, create);
304#endif 419#endif
305 return get_sv (name, create); 420 return get_sv (name, create);
306} 421}
307 422
308static AV * 423static AV * ecb_noinline
309coro_get_av (pTHX_ const char *name, int create) 424coro_get_av (pTHX_ const char *name, int create)
310{ 425{
311#if PERL_VERSION_ATLEAST (5,10,0) 426#if PERL_VERSION_ATLEAST (5,10,0)
312 /* 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 */
313 get_av (name, create); 428 get_av (name, create);
314#endif 429#endif
315 return get_av (name, create); 430 return get_av (name, create);
316} 431}
317 432
318static HV * 433static HV * ecb_noinline
319coro_get_hv (pTHX_ const char *name, int create) 434coro_get_hv (pTHX_ const char *name, int create)
320{ 435{
321#if PERL_VERSION_ATLEAST (5,10,0) 436#if PERL_VERSION_ATLEAST (5,10,0)
322 /* 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 */
323 get_hv (name, create); 438 get_hv (name, create);
324#endif 439#endif
325 return get_hv (name, create); 440 return get_hv (name, create);
326} 441}
327 442
328static 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 *
329coro_clone_padlist (pTHX_ CV *cv) 549coro_derive_padlist (pTHX_ CV *cv)
330{ 550{
331 AV *padlist = CvPADLIST (cv); 551 PADLIST *padlist = CvPADLIST (cv);
332 AV *newpadlist, *newpad; 552 PADLIST *newpadlist;
553 PADNAMELIST *padnames;
554 PAD *newpad;
555 PADOFFSET off = PadlistMAX (padlist) + 1;
333 556
334 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. */
335 AvREAL_off (newpadlist); 585 AvREAL_off (newpadlist);
336#if PERL_VERSION_ATLEAST (5,10,0)
337 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
338#else
339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
340#endif 586#endif
341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
342 --AvFILLp (padlist);
343 587
344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 588 /* Already extended to 2 elements by newPADLIST. */
345 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;
346 596
347 return newpadlist; 597 return newpadlist;
348} 598}
349 599
350static void 600ecb_inline void
351free_padlist (pTHX_ AV *padlist) 601free_padlist (pTHX_ PADLIST *padlist)
352{ 602{
353 /* may be during global destruction */ 603 /* may be during global destruction */
354 if (SvREFCNT (padlist)) 604 if (!IN_DESTRUCT)
355 { 605 {
356 I32 i = AvFILLp (padlist); 606 I32 i = PadlistMAX (padlist);
357 while (i >= 0) 607
608 while (i > 0) /* special-case index 0 */
358 { 609 {
359 SV **svp = av_fetch (padlist, i--, FALSE); 610 /* we try to be extra-careful here */
611 PAD *pad = PadlistARRAY (padlist)[i--];
612
360 if (svp) 613 if (pad)
361 { 614 {
362 SV *sv; 615 I32 j = PadMAX (pad);
363 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 616
617 while (j >= 0)
364 SvREFCNT_dec (sv); 618 SvREFCNT_dec (PadARRAY (pad)[j--]);
365 619
620 PadMAX (pad) = -1;
366 SvREFCNT_dec (*svp); 621 SvREFCNT_dec (pad);
367 } 622 }
368 } 623 }
369 624
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);
370 SvREFCNT_dec ((SV*)padlist); 633 SvREFCNT_dec ((SV*)padlist);
634#endif
371 } 635 }
372} 636}
373 637
374static int 638static int
375coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 639coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
376{ 640{
377 AV *padlist; 641 PADLIST *padlist;
378 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;
379 644
380 /* casting is fun. */ 645 /* perl manages to free our internal AV and _then_ call us */
381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 646 if (IN_DESTRUCT)
647 return 0;
648
649 while (len--)
382 free_padlist (aTHX_ padlist); 650 free_padlist (aTHX_ padlists[len]);
383
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385 651
386 return 0; 652 return 0;
387} 653}
388
389#define CORO_MAGIC_type_cv PERL_MAGIC_ext
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 654
392static MGVTBL coro_cv_vtbl = { 655static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0, 656 0, 0, 0, 0,
394 coro_cv_free 657 coro_cv_free
395}; 658};
396 659
397#define CORO_MAGIC(sv, type) \
398 expect_true (SvMAGIC (sv)) \
399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
400 ? SvMAGIC (sv) \
401 : mg_find (sv, type) \
402 : 0
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
445
446/* the next two functions merely cache the padlists */ 660/* the next two functions merely cache the padlists */
447static void 661ecb_inline void
448get_padlist (pTHX_ CV *cv) 662get_padlist (pTHX_ CV *cv)
449{ 663{
450 MAGIC *mg = CORO_MAGIC_cv (cv); 664 MAGIC *mg = CORO_MAGIC_cv (cv);
451 AV *av; 665 size_t *lenp;
452 666
453 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 667 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
454 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 668 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
455 else 669 else
456 { 670 {
457#if CORO_PREFER_PERL_FUNCTIONS 671#if CORO_PREFER_PERL_FUNCTIONS
458 /* this is probably cleaner? but also slower! */ 672 /* this is probably cleaner? but also slower! */
459 /* in practise, it seems to be less stable */ 673 /* in practise, it seems to be less stable */
460 CV *cp = Perl_cv_clone (cv); 674 CV *cp = Perl_cv_clone (aTHX_ cv);
461 CvPADLIST (cv) = CvPADLIST (cp); 675 CvPADLIST (cv) = CvPADLIST (cp);
462 CvPADLIST (cp) = 0; 676 CvPADLIST (cp) = 0;
463 SvREFCNT_dec (cp); 677 SvREFCNT_dec (cp);
464#else 678#else
465 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 679 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
466#endif 680#endif
467 } 681 }
468} 682}
469 683
470static void 684ecb_inline void
471put_padlist (pTHX_ CV *cv) 685put_padlist (pTHX_ CV *cv)
472{ 686{
473 MAGIC *mg = CORO_MAGIC_cv (cv); 687 MAGIC *mg = CORO_MAGIC_cv (cv);
474 AV *av;
475 688
476 if (expect_false (!mg)) 689 if (ecb_expect_false (!mg))
690 {
477 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);
478 699
479 av = (AV *)mg->mg_obj; 700 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
480
481 if (expect_false (AvFILLp (av) >= AvMAX (av)))
482 av_extend (av, AvMAX (av) + 1);
483
484 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
485} 701}
486 702
487/** 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);
488 776
489static void 777static void
490load_perl (pTHX_ Coro__State c) 778load_perl (pTHX_ Coro__State c)
491{ 779{
492 perl_slots *slot = c->slot; 780 perl_slots *slot = c->slot;
493 c->slot = 0; 781 c->slot = 0;
494 782
495 PL_mainstack = c->mainstack; 783 PL_mainstack = c->mainstack;
496 784
497 GvSV (PL_defgv) = slot->defsv; 785#if CORO_JIT
498 GvAV (PL_defgv) = slot->defav; 786 load_perl_slots (slot);
499 GvSV (PL_errgv) = slot->errsv; 787#else
500 GvSV (irsgv) = slot->irsgv;
501
502 #define VAR(name,type) PL_ ## name = slot->name; 788 #define VARx(name,expr,type) expr = slot->name;
503 # include "state.h" 789 #include "state.h"
504 #undef VAR 790#endif
505 791
506 { 792 {
507 dSP; 793 dSP;
508 794
509 CV *cv; 795 CV *cv;
510 796
511 /* now do the ugly restore mess */ 797 /* now do the ugly restore mess */
512 while (expect_true (cv = (CV *)POPs)) 798 while (ecb_expect_true (cv = (CV *)POPs))
513 { 799 {
514 put_padlist (aTHX_ cv); /* mark this padlist as available */ 800 put_padlist (aTHX_ cv); /* mark this padlist as available */
515 CvDEPTH (cv) = PTR2IV (POPs); 801 CvDEPTH (cv) = PTR2IV (POPs);
516 CvPADLIST (cv) = (AV *)POPs; 802 CvPADLIST (cv) = (PADLIST *)POPs;
517 } 803 }
518 804
519 PUTBACK; 805 PUTBACK;
520 } 806 }
521 807
522 slf_frame = c->slf_frame; 808 slf_frame = c->slf_frame;
523 coro_throw = c->throw; 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);
524} 836}
525 837
526static void 838static void
527save_perl (pTHX_ Coro__State c) 839save_perl (pTHX_ Coro__State c)
528{ 840{
529 c->throw = coro_throw; 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;
530 c->slf_frame = slf_frame; 868 c->slf_frame = slf_frame;
531 869
532 { 870 {
533 dSP; 871 dSP;
534 I32 cxix = cxstack_ix; 872 I32 cxix = cxstack_ix;
… …
542 880
543 XPUSHs (Nullsv); 881 XPUSHs (Nullsv);
544 /* this loop was inspired by pp_caller */ 882 /* this loop was inspired by pp_caller */
545 for (;;) 883 for (;;)
546 { 884 {
547 while (expect_true (cxix >= 0)) 885 while (ecb_expect_true (cxix >= 0))
548 { 886 {
549 PERL_CONTEXT *cx = &ccstk[cxix--]; 887 PERL_CONTEXT *cx = &ccstk[cxix--];
550 888
551 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))
552 { 890 {
553 CV *cv = cx->blk_sub.cv; 891 CV *cv = cx->blk_sub.cv;
554 892
555 if (expect_true (CvDEPTH (cv))) 893 if (ecb_expect_true (CvDEPTH (cv)))
556 { 894 {
557 EXTEND (SP, 3); 895 EXTEND (SP, 3);
558 PUSHs ((SV *)CvPADLIST (cv)); 896 PUSHs ((SV *)CvPADLIST (cv));
559 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 897 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
560 PUSHs ((SV *)cv); 898 PUSHs ((SV *)cv);
… …
563 get_padlist (aTHX_ cv); 901 get_padlist (aTHX_ cv);
564 } 902 }
565 } 903 }
566 } 904 }
567 905
568 if (expect_true (top_si->si_type == PERLSI_MAIN)) 906 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
569 break; 907 break;
570 908
571 top_si = top_si->si_prev; 909 top_si = top_si->si_prev;
572 ccstk = top_si->si_cxstack; 910 ccstk = top_si->si_cxstack;
573 cxix = top_si->si_cxix; 911 cxix = top_si->si_cxix;
… …
575 913
576 PUTBACK; 914 PUTBACK;
577 } 915 }
578 916
579 /* allocate some space on the context stack for our purposes */ 917 /* allocate some space on the context stack for our purposes */
580 /* we manually unroll here, as usually 2 slots is enough */ 918 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
581 if (SLOT_COUNT >= 1) CXINC;
582 if (SLOT_COUNT >= 2) CXINC;
583 if (SLOT_COUNT >= 3) CXINC;
584 { 919 {
585 int i; 920 unsigned int i;
921
586 for (i = 3; i < SLOT_COUNT; ++i) 922 for (i = 0; i < SLOT_COUNT; ++i)
587 CXINC; 923 CXINC;
588 } 924
589 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 925 cxstack_ix -= SLOT_COUNT; /* undo allocation */
926 }
590 927
591 c->mainstack = PL_mainstack; 928 c->mainstack = PL_mainstack;
592 929
593 { 930 {
594 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 931 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
595 932
596 slot->defav = GvAV (PL_defgv); 933#if CORO_JIT
597 slot->defsv = DEFSV; 934 save_perl_slots (slot);
598 slot->errsv = ERRSV; 935#else
599 slot->irsgv = GvSV (irsgv);
600
601 #define VAR(name,type) slot->name = PL_ ## name; 936 #define VARx(name,expr,type) slot->name = expr;
602 # include "state.h" 937 #include "state.h"
603 #undef VAR 938#endif
604 } 939 }
605} 940}
606 941
607/* 942/*
608 * allocate various perl stacks. This is almost an exact copy 943 * allocate various perl stacks. This is almost an exact copy
609 * of perl.c:init_stacks, except that it uses less memory 944 * of perl.c:init_stacks, except that it uses less memory
610 * on the (sometimes correct) assumption that coroutines do 945 * on the (sometimes correct) assumption that coroutines do
611 * not usually need a lot of stackspace. 946 * not usually need a lot of stackspace.
612 */ 947 */
613#if CORO_PREFER_PERL_FUNCTIONS 948#if CORO_PREFER_PERL_FUNCTIONS
614# define coro_init_stacks init_stacks 949# define coro_init_stacks(thx) init_stacks ()
615#else 950#else
616static void 951static void
617coro_init_stacks (pTHX) 952coro_init_stacks (pTHX)
618{ 953{
619 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() */
620 PL_curstackinfo->si_type = PERLSI_MAIN; 955 PL_curstackinfo->si_type = PERLSI_MAIN;
621 PL_curstack = PL_curstackinfo->si_stack; 956 PL_curstack = PL_curstackinfo->si_stack;
622 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 957 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
623 958
624 PL_stack_base = AvARRAY(PL_curstack); 959 PL_stack_base = AvARRAY(PL_curstack);
… …
639#endif 974#endif
640 975
641 New(54,PL_scopestack,8,I32); 976 New(54,PL_scopestack,8,I32);
642 PL_scopestack_ix = 0; 977 PL_scopestack_ix = 0;
643 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
644 982
645 New(54,PL_savestack,24,ANY); 983 New(54,PL_savestack,24,ANY);
646 PL_savestack_ix = 0; 984 PL_savestack_ix = 0;
647 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
648 991
649#if !PERL_VERSION_ATLEAST (5,10,0) 992#if !PERL_VERSION_ATLEAST (5,10,0)
650 New(54,PL_retstack,4,OP*); 993 New(54,PL_retstack,4,OP*);
651 PL_retstack_ix = 0; 994 PL_retstack_ix = 0;
652 PL_retstack_max = 4; 995 PL_retstack_max = 4;
… …
676 } 1019 }
677 1020
678 Safefree (PL_tmps_stack); 1021 Safefree (PL_tmps_stack);
679 Safefree (PL_markstack); 1022 Safefree (PL_markstack);
680 Safefree (PL_scopestack); 1023 Safefree (PL_scopestack);
1024#if HAS_SCOPESTACK_NAME
1025 Safefree (PL_scopestack_name);
1026#endif
681 Safefree (PL_savestack); 1027 Safefree (PL_savestack);
682#if !PERL_VERSION_ATLEAST (5,10,0) 1028#if !PERL_VERSION_ATLEAST (5,10,0)
683 Safefree (PL_retstack); 1029 Safefree (PL_retstack);
684#endif 1030#endif
685} 1031}
686 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
687static size_t 1042static size_t
688coro_rss (pTHX_ struct coro *coro) 1043coro_rss (pTHX_ struct coro *coro)
689{ 1044{
690 size_t rss = sizeof (*coro); 1045 size_t rss = sizeof (*coro);
691 1046
692 if (coro->mainstack) 1047 if (coro->mainstack)
693 { 1048 {
694 perl_slots tmp_slot;
695 perl_slots *slot;
696
697 if (coro->flags & CF_RUNNING) 1049 if (coro->flags & CF_RUNNING)
698 { 1050 {
699 slot = &tmp_slot; 1051 #define SYM(sym) PL_ ## sym
700 1052 CORO_RSS;
701 #define VAR(name,type) slot->name = PL_ ## name;
702 # include "state.h"
703 #undef VAR 1053 #undef SYM
704 } 1054 }
705 else 1055 else
706 slot = coro->slot;
707
708 if (slot)
709 { 1056 {
710 rss += sizeof (slot->curstackinfo); 1057 #define SYM(sym) coro->slot->sym
711 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1058 CORO_RSS;
712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1059 #undef SYM
713 rss += slot->tmps_max * sizeof (SV *);
714 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
715 rss += slot->scopestack_max * sizeof (I32);
716 rss += slot->savestack_max * sizeof (ANY);
717
718#if !PERL_VERSION_ATLEAST (5,10,0)
719 rss += slot->retstack_max * sizeof (OP *);
720#endif
721 } 1060 }
722 } 1061 }
723 1062
724 return rss; 1063 return rss;
725} 1064}
726 1065
727/** coroutine stack handling ************************************************/ 1066/** provide custom get/set/clear methods for %SIG elements ******************/
728
729static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
730static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
731static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
732 1067
733/* apparently < 5.8.8 */ 1068/* apparently < 5.8.8 */
734#ifndef MgPV_nolen_const 1069#ifndef MgPV_nolen_const
735#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1070#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
736 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1071 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
737 (const char*)(mg)->mg_ptr) 1072 (const char*)(mg)->mg_ptr)
738#endif 1073#endif
739 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
740/* 1103/*
741 * This overrides the default magic get method of %SIG elements. 1104 * This overrides the default magic get method of %SIG elements.
742 * 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
743 * 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),
744 * readback here. 1107 * we just provide our own readback here.
745 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
746 * not expecting this to actually change the hook. This is a potential problem
747 * when a schedule happens then, but we ignore this.
748 */ 1108 */
749static int 1109static int ecb_cold
750coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1110coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
751{ 1111{
752 const char *s = MgPV_nolen_const (mg); 1112 const char *s = MgPV_nolen_const (mg);
1113 /* the key must be either __DIE__ or __WARN__ here */
1114 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
753 1115
754 if (*s == '_') 1116 SV *ssv;
755 {
756 SV **svp = 0;
757 1117
758 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
759 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
760
761 if (svp) 1118 if (!*svp)
762 { 1119 ssv = &PL_sv_undef;
763 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1120 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
764 return 0; 1121 ssv = sv_2mortal (newRV_inc (*svp));
765 } 1122 else
766 } 1123 ssv = *svp;
767 1124
768 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1125 sv_setsv (sv, ssv);
1126 return 0;
769} 1127}
770 1128
771static int 1129static int ecb_cold
772coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1130coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
773{ 1131{
774 const char *s = MgPV_nolen_const (mg); 1132 const char *s = MgPV_nolen_const (mg);
1133 /* the key must be either __DIE__ or __WARN__ here */
1134 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
775 1135
776 if (*s == '_')
777 {
778 SV **svp = 0;
779
780 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
781 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
782
783 if (svp)
784 {
785 SV *old = *svp; 1136 SV *old = *svp;
786 *svp = 0; 1137 *svp = 0;
787 SvREFCNT_dec (old); 1138 SvREFCNT_dec (old);
788 return 0; 1139 return 0;
789 }
790 }
791
792 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
793} 1140}
794 1141
795static int 1142static int ecb_cold
796coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1143coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
797{ 1144{
798 const char *s = MgPV_nolen_const (mg); 1145 const char *s = MgPV_nolen_const (mg);
1146 /* the key must be either __DIE__ or __WARN__ here */
1147 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
799 1148
800 if (*s == '_')
801 {
802 SV **svp = 0;
803
804 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
805 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
806
807 if (svp)
808 {
809 SV *old = *svp; 1149 SV *old = *svp;
810 *svp = newSVsv (sv); 1150 *svp = SvOK (sv) ? newSVsv (sv) : 0;
811 SvREFCNT_dec (old); 1151 SvREFCNT_dec (old);
812 return 0; 1152 return 0;
813 }
814 }
815
816 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
817} 1153}
818 1154
819static void 1155static void
820prepare_nop (pTHX_ struct coro_transfer_args *ta) 1156prepare_nop (pTHX_ struct coro_transfer_args *ta)
821{ 1157{
… …
827slf_check_nop (pTHX_ struct CoroSLF *frame) 1163slf_check_nop (pTHX_ struct CoroSLF *frame)
828{ 1164{
829 return 0; 1165 return 0;
830} 1166}
831 1167
832static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1168static int
1169slf_check_repeat (pTHX_ struct CoroSLF *frame)
1170{
1171 return 1;
1172}
1173
1174/** coroutine stack handling ************************************************/
1175
1176static UNOP init_perl_op;
1177
1178ecb_noinline static void /* noinline to keep it out of the transfer fast path */
833coro_setup (pTHX_ struct coro *coro) 1179init_perl (pTHX_ struct coro *coro)
834{ 1180{
835 /* 1181 /*
836 * emulate part of the perl startup here. 1182 * emulate part of the perl startup here.
837 */ 1183 */
838 coro_init_stacks (aTHX); 1184 coro_init_stacks (aTHX);
839 1185
840 PL_runops = RUNOPS_DEFAULT; 1186 PL_runops = RUNOPS_DEFAULT;
841 PL_curcop = &PL_compiling; 1187 PL_curcop = &PL_compiling;
842 PL_in_eval = EVAL_NULL; 1188 PL_in_eval = EVAL_NULL;
843 PL_comppad = 0; 1189 PL_comppad = 0;
1190 PL_comppad_name = 0;
1191 PL_comppad_name_fill = 0;
1192 PL_comppad_name_floor = 0;
844 PL_curpm = 0; 1193 PL_curpm = 0;
845 PL_curpad = 0; 1194 PL_curpad = 0;
846 PL_localizing = 0; 1195 PL_localizing = 0;
847 PL_dirty = 0;
848 PL_restartop = 0; 1196 PL_restartop = 0;
849#if PERL_VERSION_ATLEAST (5,10,0) 1197#if PERL_VERSION_ATLEAST (5,10,0)
850 PL_parser = 0; 1198 PL_parser = 0;
851#endif 1199#endif
1200 PL_hints = 0;
852 1201
853 /* recreate the die/warn hooks */ 1202 /* recreate the die/warn hooks */
854 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1203 PL_diehook = SvREFCNT_inc (rv_diehook);
855 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1204 PL_warnhook = SvREFCNT_inc (rv_warnhook);
856 1205
857 GvSV (PL_defgv) = newSV (0); 1206 GvSV (PL_defgv) = newSV (0);
858 GvAV (PL_defgv) = coro->args; coro->args = 0; 1207 GvAV (PL_defgv) = coro->args; coro->args = 0;
859 GvSV (PL_errgv) = newSV (0); 1208 GvSV (PL_errgv) = newSV (0);
860 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
861 PL_rs = newSVsv (GvSV (irsgv)); 1214 PL_rs = newSVsv (GvSV (irsgv));
862 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1215 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
863 1216
864 { 1217 {
865 dSP; 1218 dSP;
866 UNOP myop; 1219 UNOP myop;
867 1220
868 Zero (&myop, 1, UNOP); 1221 Zero (&myop, 1, UNOP);
869 myop.op_next = Nullop; 1222 myop.op_next = Nullop;
1223 myop.op_type = OP_ENTERSUB;
870 myop.op_flags = OPf_WANT_VOID; 1224 myop.op_flags = OPf_WANT_VOID;
871 1225
872 PUSHMARK (SP); 1226 PUSHMARK (SP);
873 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1227 PUSHs ((SV *)coro->startcv);
874 PUTBACK; 1228 PUTBACK;
875 PL_op = (OP *)&myop; 1229 PL_op = (OP *)&myop;
876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1230 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
877 SPAGAIN;
878 } 1231 }
879 1232
880 /* 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
881 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1234 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
882 */ 1235 */
883 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1236 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
884 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1237 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1238 slf_frame.destroy = 0;
885 1239
886 coro_throw = coro->throw; 1240 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
887} 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 */
888 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
889static void 1260static void
890coro_destruct (pTHX_ struct coro *coro) 1261coro_unwind_stacks (pTHX)
891{ 1262{
892 if (!IN_DESTRUCT) 1263 if (!IN_DESTRUCT)
893 { 1264 {
894 /* restore all saved variables and stuff */ 1265 /* restore all saved variables and stuff */
895 LEAVE_SCOPE (0); 1266 LEAVE_SCOPE (0);
… …
903 POPSTACK_TO (PL_mainstack); 1274 POPSTACK_TO (PL_mainstack);
904 1275
905 /* unwind main stack */ 1276 /* unwind main stack */
906 dounwind (-1); 1277 dounwind (-1);
907 } 1278 }
1279}
908 1280
909 SvREFCNT_dec (GvSV (PL_defgv)); 1281static void
910 SvREFCNT_dec (GvAV (PL_defgv)); 1282destroy_perl (pTHX_ struct coro *coro)
911 SvREFCNT_dec (GvSV (PL_errgv)); 1283{
912 SvREFCNT_dec (PL_defoutgv); 1284 SV *svf [9];
913 SvREFCNT_dec (PL_rs);
914 SvREFCNT_dec (GvSV (irsgv));
915 1285
916 SvREFCNT_dec (PL_diehook);
917 SvREFCNT_dec (PL_warnhook);
918 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
919 SvREFCNT_dec (coro->saved_deffh); 1329 SvREFCNT_dec (coro->saved_deffh);
920 SvREFCNT_dec (coro_throw); 1330 SvREFCNT_dec (coro->rouse_cb);
921 1331 SvREFCNT_dec (coro->invoke_cb);
922 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 }
923} 1336}
924 1337
925INLINE void 1338ecb_inline void
926free_coro_mortal (pTHX) 1339free_coro_mortal (pTHX)
927{ 1340{
928 if (expect_true (coro_mortal)) 1341 if (ecb_expect_true (coro_mortal))
929 { 1342 {
930 SvREFCNT_dec (coro_mortal); 1343 SvREFCNT_dec ((SV *)coro_mortal);
931 coro_mortal = 0; 1344 coro_mortal = 0;
932 } 1345 }
933} 1346}
934 1347
935static int 1348static int
936runops_trace (pTHX) 1349runops_trace (pTHX)
937{ 1350{
938 COP *oldcop = 0; 1351 COP *oldcop = 0;
939 int oldcxix = -2; 1352 int oldcxix = -2;
940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
941 coro_cctx *cctx = coro->cctx;
942 1353
943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1354 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
944 { 1355 {
945 PERL_ASYNC_CHECK (); 1356 PERL_ASYNC_CHECK ();
946 1357
947 if (cctx->flags & CC_TRACE_ALL) 1358 if (cctx_current->flags & CC_TRACE_ALL)
948 { 1359 {
949 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)
950 { 1361 {
951 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1362 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
952 SV **bot, **top; 1363 SV **bot, **top;
953 AV *av = newAV (); /* return values */ 1364 AV *av = newAV (); /* return values */
954 SV **cb; 1365 SV **cb;
… …
991 1402
992 if (PL_curcop != &PL_compiling) 1403 if (PL_curcop != &PL_compiling)
993 { 1404 {
994 SV **cb; 1405 SV **cb;
995 1406
996 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1407 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
997 { 1408 {
998 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1409 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
999 1410
1000 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1411 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1001 { 1412 {
1002 runops_proc_t old_runops = PL_runops;
1003 dSP; 1413 dSP;
1004 GV *gv = CvGV (cx->blk_sub.cv); 1414 GV *gv = CvGV (cx->blk_sub.cv);
1005 SV *fullname = sv_2mortal (newSV (0)); 1415 SV *fullname = sv_2mortal (newSV (0));
1006 1416
1007 if (isGV (gv)) 1417 if (isGV (gv))
… …
1012 SAVETMPS; 1422 SAVETMPS;
1013 EXTEND (SP, 3); 1423 EXTEND (SP, 3);
1014 PUSHMARK (SP); 1424 PUSHMARK (SP);
1015 PUSHs (&PL_sv_yes); 1425 PUSHs (&PL_sv_yes);
1016 PUSHs (fullname); 1426 PUSHs (fullname);
1017 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);
1018 PUTBACK; 1428 PUTBACK;
1019 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);
1020 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);
1021 SPAGAIN; 1431 SPAGAIN;
1022 FREETMPS; 1432 FREETMPS;
… …
1025 } 1435 }
1026 1436
1027 oldcxix = cxstack_ix; 1437 oldcxix = cxstack_ix;
1028 } 1438 }
1029 1439
1030 if (cctx->flags & CC_TRACE_LINE) 1440 if (cctx_current->flags & CC_TRACE_LINE)
1031 { 1441 {
1032 dSP; 1442 dSP;
1033 1443
1034 PL_runops = RUNOPS_DEFAULT; 1444 PL_runops = RUNOPS_DEFAULT;
1035 ENTER; 1445 ENTER;
… …
1054 1464
1055 TAINT_NOT; 1465 TAINT_NOT;
1056 return 0; 1466 return 0;
1057} 1467}
1058 1468
1469static struct CoroSLF cctx_ssl_frame;
1470
1059static void 1471static void
1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1472slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1061{ 1473{
1062 ta->prev = (struct coro *)cctx;
1063 ta->next = 0; 1474 ta->prev = 0;
1064} 1475}
1065 1476
1066/* inject a fake call to Coro::State::_cctx_init into the execution */ 1477static int
1067/* _cctx_init should be careful, as it could be called at almost any time */ 1478slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1068/* during execution of a perl program */
1069/* also initialises PL_top_env */
1070static void NOINLINE
1071cctx_prepare (pTHX_ coro_cctx *cctx)
1072{ 1479{
1073 dSP; 1480 *frame = cctx_ssl_frame;
1074 UNOP myop;
1075 1481
1482 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1483}
1484
1485/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1486static void ecb_noinline
1487cctx_prepare (pTHX)
1488{
1076 PL_top_env = &PL_start_env; 1489 PL_top_env = &PL_start_env;
1077 1490
1078 if (cctx->flags & CC_TRACE) 1491 if (cctx_current->flags & CC_TRACE)
1079 PL_runops = runops_trace; 1492 PL_runops = runops_trace;
1080 1493
1081 Zero (&myop, 1, UNOP); 1494 /* we already must be executing an SLF op, there is no other valid way
1082 myop.op_next = PL_op; 1495 * that can lead to creation of a new cctx */
1083 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1496 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1497 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1084 1498
1085 PUSHMARK (SP); 1499 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1086 EXTEND (SP, 2); 1500 cctx_ssl_frame = slf_frame;
1087 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1501
1088 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1502 slf_frame.prepare = slf_prepare_set_stacklevel;
1089 PUTBACK; 1503 slf_frame.check = slf_check_set_stacklevel;
1090 PL_op = (OP *)&myop;
1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1092 SPAGAIN;
1093} 1504}
1094 1505
1095/* the tail of transfer: execute stuff we can only do after a transfer */ 1506/* the tail of transfer: execute stuff we can only do after a transfer */
1096INLINE void 1507ecb_inline void
1097transfer_tail (pTHX) 1508transfer_tail (pTHX)
1098{ 1509{
1099 free_coro_mortal (aTHX); 1510 free_coro_mortal (aTHX);
1511}
1512
1513/* try to exit the same way perl's main function would do */
1514/* we do not bother resetting the environment or other things *7
1515/* that are not, uhm, essential */
1516/* this obviously also doesn't work when perl is embedded */
1517static void ecb_noinline ecb_cold
1518perlish_exit (pTHX)
1519{
1520 int exitstatus = perl_destruct (PL_curinterp);
1521 perl_free (PL_curinterp);
1522 exit (exitstatus);
1100} 1523}
1101 1524
1102/* 1525/*
1103 * this is a _very_ stripped down perl interpreter ;) 1526 * this is a _very_ stripped down perl interpreter ;)
1104 */ 1527 */
… …
1116 /* normally we would need to skip the entersub here */ 1539 /* normally we would need to skip the entersub here */
1117 /* not doing so will re-execute it, which is exactly what we want */ 1540 /* not doing so will re-execute it, which is exactly what we want */
1118 /* PL_nop = PL_nop->op_next */ 1541 /* PL_nop = PL_nop->op_next */
1119 1542
1120 /* inject a fake subroutine call to cctx_init */ 1543 /* inject a fake subroutine call to cctx_init */
1121 cctx_prepare (aTHX_ (coro_cctx *)arg); 1544 cctx_prepare (aTHX);
1122 1545
1123 /* cctx_run is the alternative tail of transfer() */ 1546 /* cctx_run is the alternative tail of transfer() */
1124 transfer_tail (aTHX); 1547 transfer_tail (aTHX);
1125 1548
1126 /* somebody or something will hit me for both perl_run and PL_restartop */ 1549 /* somebody or something will hit me for both perl_run and PL_restartop */
1127 PL_restartop = PL_op; 1550 PL_restartop = PL_op;
1128 perl_run (PL_curinterp); 1551 perl_run (PL_curinterp);
1552 /*
1553 * Unfortunately, there is no way to get at the return values of the
1554 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1555 * runtime errors here, as this is just a random interpreter, not a thread.
1556 */
1557
1558 /*
1559 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1560 * requires PL_scopestack_ix, so do it here if required.
1561 */
1562 if (!PL_scopestack_ix)
1563 ENTER;
1129 1564
1130 /* 1565 /*
1131 * If perl-run returns we assume exit() was being called or the coro 1566 * If perl-run returns we assume exit() was being called or the coro
1132 * fell off the end, which seems to be the only valid (non-bug) 1567 * fell off the end, which seems to be the only valid (non-bug)
1133 * reason for perl_run to return. We try to exit by jumping to the 1568 * reason for perl_run to return. We try to mimic whatever perl is normally
1134 * bootstrap-time "top" top_env, as we cannot restore the "main" 1569 * doing in that case. YMMV.
1135 * coroutine as Coro has no such concept
1136 */ 1570 */
1137 PL_top_env = main_top_env; 1571 perlish_exit (aTHX);
1138 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1139 } 1572 }
1140} 1573}
1141 1574
1142static coro_cctx * 1575static coro_cctx *
1143cctx_new () 1576cctx_new (void)
1144{ 1577{
1145 coro_cctx *cctx; 1578 coro_cctx *cctx;
1146 1579
1147 ++cctx_count; 1580 ++cctx_count;
1148 New (0, cctx, 1, coro_cctx); 1581 New (0, cctx, 1, coro_cctx);
… …
1154 return cctx; 1587 return cctx;
1155} 1588}
1156 1589
1157/* create a new cctx only suitable as source */ 1590/* create a new cctx only suitable as source */
1158static coro_cctx * 1591static coro_cctx *
1159cctx_new_empty () 1592cctx_new_empty (void)
1160{ 1593{
1161 coro_cctx *cctx = cctx_new (); 1594 coro_cctx *cctx = cctx_new ();
1162 1595
1163 cctx->sptr = 0; 1596 cctx->stack.sptr = 0;
1164 coro_create (&cctx->cctx, 0, 0, 0, 0); 1597 coro_create (&cctx->cctx, 0, 0, 0, 0);
1165 1598
1166 return cctx; 1599 return cctx;
1167} 1600}
1168 1601
1169/* create a new cctx suitable as destination/running a perl interpreter */ 1602/* create a new cctx suitable as destination/running a perl interpreter */
1170static coro_cctx * 1603static coro_cctx *
1171cctx_new_run () 1604cctx_new_run (void)
1172{ 1605{
1173 coro_cctx *cctx = cctx_new (); 1606 coro_cctx *cctx = cctx_new ();
1174 void *stack_start;
1175 size_t stack_size;
1176 1607
1177#if HAVE_MMAP 1608 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1178 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1179 /* mmap supposedly does allocate-on-write for us */
1180 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1181
1182 if (cctx->sptr != (void *)-1)
1183 {
1184 #if CORO_STACKGUARD
1185 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1186 #endif
1187 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1188 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1189 cctx->flags |= CC_MAPPED;
1190 } 1609 {
1191 else
1192#endif
1193 {
1194 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1195 New (0, cctx->sptr, cctx_stacksize, long);
1196
1197 if (!cctx->sptr)
1198 {
1199 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1610 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1200 _exit (EXIT_FAILURE); 1611 _exit (EXIT_FAILURE);
1201 }
1202
1203 stack_start = cctx->sptr;
1204 stack_size = cctx->ssize;
1205 } 1612 }
1206 1613
1207 #if CORO_USE_VALGRIND
1208 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1209 #endif
1210
1211 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1614 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1212 1615
1213 return cctx; 1616 return cctx;
1214} 1617}
1215 1618
1216static void 1619static void
1217cctx_destroy (coro_cctx *cctx) 1620cctx_destroy (coro_cctx *cctx)
1218{ 1621{
1219 if (!cctx) 1622 if (!cctx)
1220 return; 1623 return;
1221 1624
1625 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1626
1222 --cctx_count; 1627 --cctx_count;
1223 coro_destroy (&cctx->cctx); 1628 coro_destroy (&cctx->cctx);
1224 1629
1225 /* coro_transfer creates new, empty cctx's */ 1630 coro_stack_free (&cctx->stack);
1226 if (cctx->sptr)
1227 {
1228 #if CORO_USE_VALGRIND
1229 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1230 #endif
1231
1232#if HAVE_MMAP
1233 if (cctx->flags & CC_MAPPED)
1234 munmap (cctx->sptr, cctx->ssize);
1235 else
1236#endif
1237 Safefree (cctx->sptr);
1238 }
1239 1631
1240 Safefree (cctx); 1632 Safefree (cctx);
1241} 1633}
1242 1634
1243/* wether this cctx should be destructed */ 1635/* wether this cctx should be destructed */
1244#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1636#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1245 1637
1246static coro_cctx * 1638static coro_cctx *
1247cctx_get (pTHX) 1639cctx_get (pTHX)
1248{ 1640{
1249 while (expect_true (cctx_first)) 1641 while (ecb_expect_true (cctx_first))
1250 { 1642 {
1251 coro_cctx *cctx = cctx_first; 1643 coro_cctx *cctx = cctx_first;
1252 cctx_first = cctx->next; 1644 cctx_first = cctx->next;
1253 --cctx_idle; 1645 --cctx_idle;
1254 1646
1255 if (expect_true (!CCTX_EXPIRED (cctx))) 1647 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1256 return cctx; 1648 return cctx;
1257 1649
1258 cctx_destroy (cctx); 1650 cctx_destroy (cctx);
1259 } 1651 }
1260 1652
… …
1262} 1654}
1263 1655
1264static void 1656static void
1265cctx_put (coro_cctx *cctx) 1657cctx_put (coro_cctx *cctx)
1266{ 1658{
1267 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1659 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1268 1660
1269 /* free another cctx if overlimit */ 1661 /* free another cctx if overlimit */
1270 if (expect_false (cctx_idle >= cctx_max_idle)) 1662 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1271 { 1663 {
1272 coro_cctx *first = cctx_first; 1664 coro_cctx *first = cctx_first;
1273 cctx_first = first->next; 1665 cctx_first = first->next;
1274 --cctx_idle; 1666 --cctx_idle;
1275 1667
… …
1286static void 1678static void
1287transfer_check (pTHX_ struct coro *prev, struct coro *next) 1679transfer_check (pTHX_ struct coro *prev, struct coro *next)
1288{ 1680{
1289 /* TODO: throwing up here is considered harmful */ 1681 /* TODO: throwing up here is considered harmful */
1290 1682
1291 if (expect_true (prev != next)) 1683 if (ecb_expect_true (prev != next))
1292 { 1684 {
1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1685 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1294 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1686 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1295 1687
1296 if (expect_false (next->flags & CF_RUNNING)) 1688 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1298
1299 if (expect_false (next->flags & CF_DESTROYED))
1300 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1689 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1301 1690
1302#if !PERL_VERSION_ATLEAST (5,10,0) 1691#if !PERL_VERSION_ATLEAST (5,10,0)
1303 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1692 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1304 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1693 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1305#endif 1694#endif
1306 } 1695 }
1307} 1696}
1308 1697
1309/* always use the TRANSFER macro */ 1698/* always use the TRANSFER macro */
1310static void NOINLINE /* noinline so we have a fixed stackframe */ 1699static void ecb_noinline /* noinline so we have a fixed stackframe */
1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1700transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1312{ 1701{
1313 dSTACKLEVEL; 1702 dSTACKLEVEL;
1314 1703
1315 /* sometimes transfer is only called to set idle_sp */ 1704 /* sometimes transfer is only called to set idle_sp */
1316 if (expect_false (!next)) 1705 if (ecb_expect_false (!prev))
1317 { 1706 {
1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1707 cctx_current->idle_sp = STACKLEVEL;
1319 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1708 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1320 } 1709 }
1321 else if (expect_true (prev != next)) 1710 else if (ecb_expect_true (prev != next))
1322 { 1711 {
1323 coro_cctx *prev__cctx; 1712 coro_cctx *cctx_prev;
1324 1713
1325 if (expect_false (prev->flags & CF_NEW)) 1714 if (ecb_expect_false (prev->flags & CF_NEW))
1326 { 1715 {
1327 /* create a new empty/source context */ 1716 /* create a new empty/source context */
1328 prev->cctx = cctx_new_empty ();
1329 prev->flags &= ~CF_NEW; 1717 prev->flags &= ~CF_NEW;
1330 prev->flags |= CF_RUNNING; 1718 prev->flags |= CF_RUNNING;
1331 } 1719 }
1332 1720
1333 prev->flags &= ~CF_RUNNING; 1721 prev->flags &= ~CF_RUNNING;
1334 next->flags |= CF_RUNNING; 1722 next->flags |= CF_RUNNING;
1335 1723
1336 /* first get rid of the old state */ 1724 /* first get rid of the old state */
1337 save_perl (aTHX_ prev); 1725 save_perl (aTHX_ prev);
1338 1726
1339 if (expect_false (next->flags & CF_NEW)) 1727 if (ecb_expect_false (next->flags & CF_NEW))
1340 { 1728 {
1341 /* need to start coroutine */ 1729 /* need to start coroutine */
1342 next->flags &= ~CF_NEW; 1730 next->flags &= ~CF_NEW;
1343 /* setup coroutine call */ 1731 /* setup coroutine call */
1344 coro_setup (aTHX_ next); 1732 init_perl (aTHX_ next);
1345 } 1733 }
1346 else 1734 else
1347 load_perl (aTHX_ next); 1735 load_perl (aTHX_ next);
1348 1736
1349 prev__cctx = prev->cctx;
1350
1351 /* possibly untie and reuse the cctx */ 1737 /* possibly untie and reuse the cctx */
1352 if (expect_true ( 1738 if (ecb_expect_true (
1353 prev__cctx->idle_sp == (void *)stacklevel 1739 cctx_current->idle_sp == STACKLEVEL
1354 && !(prev__cctx->flags & CC_TRACE) 1740 && !(cctx_current->flags & CC_TRACE)
1355 && !force_cctx 1741 && !force_cctx
1356 )) 1742 ))
1357 { 1743 {
1358 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1744 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1359 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1745 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1360 1746
1361 prev->cctx = 0;
1362
1363 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1747 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1364 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1748 /* without this the next cctx_get might destroy the running cctx while still in use */
1365 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1749 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1366 if (!next->cctx) 1750 if (ecb_expect_true (!next->cctx))
1367 next->cctx = cctx_get (aTHX); 1751 next->cctx = cctx_get (aTHX);
1368 1752
1369 cctx_put (prev__cctx); 1753 cctx_put (cctx_current);
1370 } 1754 }
1755 else
1756 prev->cctx = cctx_current;
1371 1757
1372 ++next->usecount; 1758 ++next->usecount;
1373 1759
1374 if (expect_true (!next->cctx)) 1760 cctx_prev = cctx_current;
1375 next->cctx = cctx_get (aTHX); 1761 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1376 1762
1377 if (expect_false (prev__cctx != next->cctx)) 1763 next->cctx = 0;
1764
1765 if (ecb_expect_false (cctx_prev != cctx_current))
1378 { 1766 {
1379 prev__cctx->top_env = PL_top_env; 1767 cctx_prev->top_env = PL_top_env;
1380 PL_top_env = next->cctx->top_env; 1768 PL_top_env = cctx_current->top_env;
1381 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1769 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1382 } 1770 }
1383 1771
1384 transfer_tail (aTHX); 1772 transfer_tail (aTHX);
1385 } 1773 }
1386} 1774}
… …
1388#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1776#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1389#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1777#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1390 1778
1391/** high level stuff ********************************************************/ 1779/** high level stuff ********************************************************/
1392 1780
1781/* this function is actually Coro, not Coro::State, but we call it from here */
1782/* because it is convenient - but it hasn't been declared yet for that reason */
1393static int 1783static void
1784coro_call_on_destroy (pTHX_ struct coro *coro);
1785
1786static void
1394coro_state_destroy (pTHX_ struct coro *coro) 1787coro_state_destroy (pTHX_ struct coro *coro)
1395{ 1788{
1396 if (coro->flags & CF_DESTROYED) 1789 if (coro->flags & CF_ZOMBIE)
1397 return 0; 1790 return;
1398 1791
1399 if (coro->on_destroy)
1400 coro->on_destroy (aTHX_ coro); 1792 slf_destroy (aTHX_ coro);
1401 1793
1402 coro->flags |= CF_DESTROYED; 1794 coro->flags |= CF_ZOMBIE;
1403 1795
1404 if (coro->flags & CF_READY) 1796 if (coro->flags & CF_READY)
1405 { 1797 {
1406 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1798 /* reduce nready, as destroying a ready coro effectively unreadies it */
1407 /* alternative: look through all ready queues and remove the coro */ 1799 /* alternative: look through all ready queues and remove the coro */
1408 --coro_nready; 1800 --coro_nready;
1409 } 1801 }
1410 else 1802 else
1411 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1803 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1412 1804
1413 if (coro->mainstack && coro->mainstack != main_mainstack)
1414 {
1415 struct coro temp;
1416
1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1418
1419 save_perl (aTHX_ &temp);
1420 load_perl (aTHX_ coro);
1421
1422 coro_destruct (aTHX_ coro);
1423
1424 load_perl (aTHX_ &temp);
1425
1426 coro->slot = 0;
1427 }
1428
1429 cctx_destroy (coro->cctx);
1430 SvREFCNT_dec (coro->args);
1431
1432 if (coro->next) coro->next->prev = coro->prev; 1805 if (coro->next) coro->next->prev = coro->prev;
1433 if (coro->prev) coro->prev->next = coro->next; 1806 if (coro->prev) coro->prev->next = coro->next;
1434 if (coro == coro_first) coro_first = coro->next; 1807 if (coro == coro_first) coro_first = coro->next;
1435 1808
1436 return 1; 1809 if (coro->mainstack
1810 && coro->mainstack != main_mainstack
1811 && coro->slot
1812 && !PL_dirty)
1813 destroy_perl (aTHX_ coro);
1814
1815 cctx_destroy (coro->cctx);
1816 SvREFCNT_dec (coro->startcv);
1817 SvREFCNT_dec (coro->args);
1818 SvREFCNT_dec (coro->swap_sv);
1819 SvREFCNT_dec (CORO_THROW);
1820
1821 coro_call_on_destroy (aTHX_ coro);
1822
1823 /* more destruction mayhem in coro_state_free */
1437} 1824}
1438 1825
1439static int 1826static int
1440coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1827coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1441{ 1828{
1442 struct coro *coro = (struct coro *)mg->mg_ptr; 1829 struct coro *coro = (struct coro *)mg->mg_ptr;
1443 mg->mg_ptr = 0; 1830 mg->mg_ptr = 0;
1444 1831
1445 coro->hv = 0;
1446
1447 if (--coro->refcnt < 0)
1448 {
1449 coro_state_destroy (aTHX_ coro); 1832 coro_state_destroy (aTHX_ coro);
1833 SvREFCNT_dec (coro->on_destroy);
1834 SvREFCNT_dec (coro->status);
1835
1450 Safefree (coro); 1836 Safefree (coro);
1451 }
1452 1837
1453 return 0; 1838 return 0;
1454} 1839}
1455 1840
1456static int 1841static int ecb_cold
1457coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1842coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1458{ 1843{
1459 struct coro *coro = (struct coro *)mg->mg_ptr; 1844 /* called when perl clones the current process the slow way (windows process emulation) */
1460 1845 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1461 ++coro->refcnt; 1846 mg->mg_ptr = 0;
1847 mg->mg_virtual = 0;
1462 1848
1463 return 0; 1849 return 0;
1464} 1850}
1465 1851
1466static MGVTBL coro_state_vtbl = { 1852static MGVTBL coro_state_vtbl = {
… …
1491 TRANSFER (ta, 1); 1877 TRANSFER (ta, 1);
1492} 1878}
1493 1879
1494/** Coro ********************************************************************/ 1880/** Coro ********************************************************************/
1495 1881
1496INLINE void 1882ecb_inline void
1497coro_enq (pTHX_ struct coro *coro) 1883coro_enq (pTHX_ struct coro *coro)
1498{ 1884{
1499 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1885 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1500}
1501 1886
1502INLINE SV * 1887 SvREFCNT_inc_NN (coro->hv);
1888
1889 coro->next_ready = 0;
1890 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1891 ready [1] = coro;
1892}
1893
1894ecb_inline struct coro *
1503coro_deq (pTHX) 1895coro_deq (pTHX)
1504{ 1896{
1505 int prio; 1897 int prio;
1506 1898
1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1899 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1508 if (AvFILLp (coro_ready [prio]) >= 0) 1900 {
1509 return av_shift (coro_ready [prio]); 1901 struct coro **ready = coro_ready [prio];
1902
1903 if (ready [0])
1904 {
1905 struct coro *coro = ready [0];
1906 ready [0] = coro->next_ready;
1907 return coro;
1908 }
1909 }
1510 1910
1511 return 0; 1911 return 0;
1912}
1913
1914static void
1915invoke_sv_ready_hook_helper (void)
1916{
1917 dTHX;
1918 dSP;
1919
1920 ENTER;
1921 SAVETMPS;
1922
1923 PUSHMARK (SP);
1924 PUTBACK;
1925 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1926
1927 FREETMPS;
1928 LEAVE;
1512} 1929}
1513 1930
1514static int 1931static int
1515api_ready (pTHX_ SV *coro_sv) 1932api_ready (pTHX_ SV *coro_sv)
1516{ 1933{
1517 struct coro *coro;
1518 SV *sv_hook;
1519 void (*xs_hook)(void);
1520
1521 if (SvROK (coro_sv))
1522 coro_sv = SvRV (coro_sv);
1523
1524 coro = SvSTATE (coro_sv); 1934 struct coro *coro = SvSTATE (coro_sv);
1525 1935
1526 if (coro->flags & CF_READY) 1936 if (coro->flags & CF_READY)
1527 return 0; 1937 return 0;
1528 1938
1529 coro->flags |= CF_READY; 1939 coro->flags |= CF_READY;
1530 1940
1531 sv_hook = coro_nready ? 0 : coro_readyhook;
1532 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1533
1534 coro_enq (aTHX_ coro); 1941 coro_enq (aTHX_ coro);
1535 ++coro_nready;
1536 1942
1537 if (sv_hook) 1943 if (!coro_nready++)
1538 { 1944 if (coroapi.readyhook)
1539 dSP; 1945 coroapi.readyhook ();
1540
1541 ENTER;
1542 SAVETMPS;
1543
1544 PUSHMARK (SP);
1545 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD);
1547 SPAGAIN;
1548
1549 FREETMPS;
1550 LEAVE;
1551 }
1552
1553 if (xs_hook)
1554 xs_hook ();
1555 1946
1556 return 1; 1947 return 1;
1557} 1948}
1558 1949
1559static int 1950static int
1560api_is_ready (pTHX_ SV *coro_sv) 1951api_is_ready (pTHX_ SV *coro_sv)
1561{ 1952{
1562 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1953 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1563} 1954}
1564 1955
1565INLINE void 1956/* expects to own a reference to next->hv */
1957ecb_inline void
1566prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1958prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1567{ 1959{
1568 SV *prev_sv, *next_sv;
1569
1570 for (;;)
1571 {
1572 next_sv = coro_deq (aTHX);
1573
1574 /* nothing to schedule: call the idle handler */
1575 if (expect_false (!next_sv))
1576 {
1577 dSP;
1578
1579 ENTER;
1580 SAVETMPS;
1581
1582 PUSHMARK (SP);
1583 PUTBACK;
1584 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1585 SPAGAIN;
1586
1587 FREETMPS;
1588 LEAVE;
1589 continue;
1590 }
1591
1592 ta->next = SvSTATE_hv (next_sv);
1593
1594 /* cannot transfer to destroyed coros, skip and look for next */
1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1596 {
1597 SvREFCNT_dec (next_sv);
1598 /* coro_nready has already been taken care of by destroy */
1599 continue;
1600 }
1601
1602 --coro_nready;
1603 break;
1604 }
1605
1606 /* free this only after the transfer */
1607 prev_sv = SvRV (coro_current); 1960 SV *prev_sv = SvRV (coro_current);
1961
1608 ta->prev = SvSTATE_hv (prev_sv); 1962 ta->prev = SvSTATE_hv (prev_sv);
1963 ta->next = next;
1964
1609 TRANSFER_CHECK (*ta); 1965 TRANSFER_CHECK (*ta);
1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1966
1611 ta->next->flags &= ~CF_READY;
1612 SvRV_set (coro_current, next_sv); 1967 SvRV_set (coro_current, (SV *)next->hv);
1613 1968
1614 free_coro_mortal (aTHX); 1969 free_coro_mortal (aTHX);
1615 coro_mortal = prev_sv; 1970 coro_mortal = prev_sv;
1616} 1971}
1617 1972
1618INLINE void 1973static void
1974prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1975{
1976 for (;;)
1977 {
1978 struct coro *next = coro_deq (aTHX);
1979
1980 if (ecb_expect_true (next))
1981 {
1982 /* cannot transfer to destroyed coros, skip and look for next */
1983 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1984 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1985 else
1986 {
1987 next->flags &= ~CF_READY;
1988 --coro_nready;
1989
1990 prepare_schedule_to (aTHX_ ta, next);
1991 break;
1992 }
1993 }
1994 else
1995 {
1996 /* nothing to schedule: call the idle handler */
1997 if (SvROK (sv_idle)
1998 && SvOBJECT (SvRV (sv_idle)))
1999 {
2000 if (SvRV (sv_idle) == SvRV (coro_current))
2001 {
2002 require_pv ("Carp");
2003
2004 {
2005 dSP;
2006
2007 ENTER;
2008 SAVETMPS;
2009
2010 PUSHMARK (SP);
2011 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2012 PUTBACK;
2013 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2014
2015 FREETMPS;
2016 LEAVE;
2017 }
2018 }
2019
2020 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
2021 api_ready (aTHX_ SvRV (sv_idle));
2022 --coro_nready;
2023 }
2024 else
2025 {
2026 /* TODO: deprecated, remove, cannot work reliably *//*D*/
2027 dSP;
2028
2029 ENTER;
2030 SAVETMPS;
2031
2032 PUSHMARK (SP);
2033 PUTBACK;
2034 call_sv (sv_idle, G_VOID | G_DISCARD);
2035
2036 FREETMPS;
2037 LEAVE;
2038 }
2039 }
2040 }
2041}
2042
2043ecb_inline void
1619prepare_cede (pTHX_ struct coro_transfer_args *ta) 2044prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620{ 2045{
1621 api_ready (aTHX_ coro_current); 2046 api_ready (aTHX_ coro_current);
1622 prepare_schedule (aTHX_ ta); 2047 prepare_schedule (aTHX_ ta);
1623} 2048}
1624 2049
1625INLINE void 2050ecb_inline void
1626prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2051prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1627{ 2052{
1628 SV *prev = SvRV (coro_current); 2053 SV *prev = SvRV (coro_current);
1629 2054
1630 if (coro_nready) 2055 if (coro_nready)
… …
1643 2068
1644 prepare_schedule (aTHX_ &ta); 2069 prepare_schedule (aTHX_ &ta);
1645 TRANSFER (ta, 1); 2070 TRANSFER (ta, 1);
1646} 2071}
1647 2072
2073static void
2074api_schedule_to (pTHX_ SV *coro_sv)
2075{
2076 struct coro_transfer_args ta;
2077 struct coro *next = SvSTATE (coro_sv);
2078
2079 SvREFCNT_inc_NN (coro_sv);
2080 prepare_schedule_to (aTHX_ &ta, next);
2081}
2082
1648static int 2083static int
1649api_cede (pTHX) 2084api_cede (pTHX)
1650{ 2085{
1651 struct coro_transfer_args ta; 2086 struct coro_transfer_args ta;
1652 2087
1653 prepare_cede (aTHX_ &ta); 2088 prepare_cede (aTHX_ &ta);
1654 2089
1655 if (expect_true (ta.prev != ta.next)) 2090 if (ecb_expect_true (ta.prev != ta.next))
1656 { 2091 {
1657 TRANSFER (ta, 1); 2092 TRANSFER (ta, 1);
1658 return 1; 2093 return 1;
1659 } 2094 }
1660 else 2095 else
… …
1679static void 2114static void
1680api_trace (pTHX_ SV *coro_sv, int flags) 2115api_trace (pTHX_ SV *coro_sv, int flags)
1681{ 2116{
1682 struct coro *coro = SvSTATE (coro_sv); 2117 struct coro *coro = SvSTATE (coro_sv);
1683 2118
2119 if (coro->flags & CF_RUNNING)
2120 croak ("cannot enable tracing on a running coroutine, caught");
2121
1684 if (flags & CC_TRACE) 2122 if (flags & CC_TRACE)
1685 { 2123 {
1686 if (!coro->cctx) 2124 if (!coro->cctx)
1687 coro->cctx = cctx_new_run (); 2125 coro->cctx = cctx_new_run ();
1688 else if (!(coro->cctx->flags & CC_TRACE)) 2126 else if (!(coro->cctx->flags & CC_TRACE))
1689 croak ("cannot enable tracing on coroutine with custom stack,"); 2127 croak ("cannot enable tracing on coroutine with custom stack, caught");
1690 2128
1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2129 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1692 } 2130 }
1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2131 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1694 { 2132 {
… …
1699 else 2137 else
1700 coro->slot->runops = RUNOPS_DEFAULT; 2138 coro->slot->runops = RUNOPS_DEFAULT;
1701 } 2139 }
1702} 2140}
1703 2141
2142static void
2143coro_push_av (pTHX_ AV *av, I32 gimme_v)
2144{
2145 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2146 {
2147 dSP;
2148
2149 if (gimme_v == G_SCALAR)
2150 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2151 else
2152 {
2153 int i;
2154 EXTEND (SP, AvFILLp (av) + 1);
2155
2156 for (i = 0; i <= AvFILLp (av); ++i)
2157 PUSHs (AvARRAY (av)[i]);
2158 }
2159
2160 PUTBACK;
2161 }
2162}
2163
2164static void
2165coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2166{
2167 if (!coro->on_destroy)
2168 coro->on_destroy = newAV ();
2169
2170 av_push (coro->on_destroy, cb);
2171}
2172
2173static void
2174slf_destroy_join (pTHX_ struct CoroSLF *frame)
2175{
2176 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2177}
2178
2179static int
2180slf_check_join (pTHX_ struct CoroSLF *frame)
2181{
2182 struct coro *coro = (struct coro *)frame->data;
2183
2184 if (!coro->status)
2185 return 1;
2186
2187 frame->destroy = 0;
2188
2189 coro_push_av (aTHX_ coro->status, GIMME_V);
2190
2191 SvREFCNT_dec ((SV *)coro->hv);
2192
2193 return 0;
2194}
2195
2196static void
2197slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2198{
2199 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2200
2201 if (items > 1)
2202 croak ("join called with too many arguments");
2203
2204 if (coro->status)
2205 frame->prepare = prepare_nop;
2206 else
2207 {
2208 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2209 frame->prepare = prepare_schedule;
2210 }
2211
2212 frame->check = slf_check_join;
2213 frame->destroy = slf_destroy_join;
2214 frame->data = (void *)coro;
2215 SvREFCNT_inc (coro->hv);
2216}
2217
2218static void
2219coro_call_on_destroy (pTHX_ struct coro *coro)
2220{
2221 AV *od = coro->on_destroy;
2222
2223 if (!od)
2224 return;
2225
2226 coro->on_destroy = 0;
2227 sv_2mortal ((SV *)od);
2228
2229 while (AvFILLp (od) >= 0)
2230 {
2231 SV *cb = sv_2mortal (av_pop (od));
2232
2233 /* coro hv's (and only hv's at the moment) are supported as well */
2234 if (SvSTATEhv_p (aTHX_ cb))
2235 api_ready (aTHX_ cb);
2236 else
2237 {
2238 dSP; /* don't disturb outer sp */
2239 PUSHMARK (SP);
2240
2241 if (coro->status)
2242 {
2243 PUTBACK;
2244 coro_push_av (aTHX_ coro->status, G_ARRAY);
2245 SPAGAIN;
2246 }
2247
2248 PUTBACK;
2249 call_sv (cb, G_VOID | G_DISCARD);
2250 }
2251 }
2252}
2253
2254static void
2255coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2256{
2257 AV *av;
2258
2259 if (coro->status)
2260 {
2261 av = coro->status;
2262 av_clear (av);
2263 }
2264 else
2265 av = coro->status = newAV ();
2266
2267 /* items are actually not so common, so optimise for this case */
2268 if (items)
2269 {
2270 int i;
2271
2272 av_extend (av, items - 1);
2273
2274 for (i = 0; i < items; ++i)
2275 av_push (av, SvREFCNT_inc_NN (arg [i]));
2276 }
2277}
2278
2279static void
2280slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2281{
2282 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2283 api_ready (aTHX_ sv_manager);
2284
2285 frame->prepare = prepare_schedule;
2286 frame->check = slf_check_repeat;
2287
2288 /* as a minor optimisation, we could unwind all stacks here */
2289 /* but that puts extra pressure on pp_slf, and is not worth much */
2290 /*coro_unwind_stacks (aTHX);*/
2291}
2292
2293static void
2294slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2295{
2296 HV *coro_hv = (HV *)SvRV (coro_current);
2297
2298 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2299 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2300}
2301
2302static void
2303slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2304{
2305 HV *coro_hv;
2306 struct coro *coro;
2307
2308 if (items <= 0)
2309 croak ("Coro::cancel called without coro object,");
2310
2311 coro = SvSTATE (arg [0]);
2312 coro_hv = coro->hv;
2313
2314 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2315
2316 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2317 {
2318 /* coro currently busy cancelling something, so just notify it */
2319 coro->slf_frame.data = (void *)coro;
2320
2321 frame->prepare = prepare_nop;
2322 frame->check = slf_check_nop;
2323 }
2324 else if (coro_hv == (HV *)SvRV (coro_current))
2325 {
2326 /* cancelling the current coro is allowed, and equals terminate */
2327 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2328 }
2329 else
2330 {
2331 struct coro *self = SvSTATE_current;
2332
2333 if (!self)
2334 croak ("Coro::cancel called outside of thread content,");
2335
2336 /* otherwise we cancel directly, purely for speed reasons
2337 * unfortunately, this requires some magic trickery, as
2338 * somebody else could cancel us, so we have to fight the cancellation.
2339 * this is ugly, and hopefully fully worth the extra speed.
2340 * besides, I can't get the slow-but-safe version working...
2341 */
2342 slf_frame.data = 0;
2343 self->flags |= CF_NOCANCEL;
2344 coro_state_destroy (aTHX_ coro);
2345 self->flags &= ~CF_NOCANCEL;
2346
2347 if (slf_frame.data)
2348 {
2349 /* while we were busy we have been cancelled, so terminate */
2350 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2351 }
2352 else
2353 {
2354 frame->prepare = prepare_nop;
2355 frame->check = slf_check_nop;
2356 }
2357 }
2358}
2359
2360static int
2361slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2362{
2363 frame->prepare = 0;
2364 coro_unwind_stacks (aTHX);
2365
2366 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2367
2368 return 1;
2369}
2370
2371static int
2372safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2373{
2374 if (coro->cctx)
2375 croak ("coro inside C callback, unable to cancel at this time, caught");
2376
2377 if (coro->flags & (CF_NEW | CF_ZOMBIE))
2378 {
2379 coro_set_status (aTHX_ coro, arg, items);
2380 coro_state_destroy (aTHX_ coro);
2381 }
2382 else
2383 {
2384 if (!coro->slf_frame.prepare)
2385 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2386
2387 slf_destroy (aTHX_ coro);
2388
2389 coro_set_status (aTHX_ coro, arg, items);
2390 coro->slf_frame.prepare = prepare_nop;
2391 coro->slf_frame.check = slf_check_safe_cancel;
2392
2393 api_ready (aTHX_ (SV *)coro->hv);
2394 }
2395
2396 return 1;
2397}
2398
2399/*****************************************************************************/
2400/* async pool handler */
2401
2402static int
2403slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2404{
2405 HV *hv = (HV *)SvRV (coro_current);
2406 struct coro *coro = (struct coro *)frame->data;
2407
2408 if (!coro->invoke_cb)
2409 return 1; /* loop till we have invoke */
2410 else
2411 {
2412 hv_store (hv, "desc", sizeof ("desc") - 1,
2413 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2414
2415 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2416
2417 {
2418 dSP;
2419 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2420 PUTBACK;
2421 }
2422
2423 SvREFCNT_dec (GvAV (PL_defgv));
2424 GvAV (PL_defgv) = coro->invoke_av;
2425 coro->invoke_av = 0;
2426
2427 return 0;
2428 }
2429}
2430
2431static void
2432slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2433{
2434 HV *hv = (HV *)SvRV (coro_current);
2435 struct coro *coro = SvSTATE_hv ((SV *)hv);
2436
2437 if (ecb_expect_true (coro->saved_deffh))
2438 {
2439 /* subsequent iteration */
2440 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2441 coro->saved_deffh = 0;
2442
2443 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2444 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2445 {
2446 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2447 return;
2448 }
2449 else
2450 {
2451 av_clear (GvAV (PL_defgv));
2452 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2453
2454 if (ecb_expect_false (coro->swap_sv))
2455 {
2456 SWAP_SVS_LEAVE (coro);
2457 SvREFCNT_dec_NN (coro->swap_sv);
2458 coro->swap_sv = 0;
2459 }
2460
2461 coro->prio = 0;
2462
2463 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2464 api_trace (aTHX_ coro_current, 0);
2465
2466 frame->prepare = prepare_schedule;
2467 av_push (av_async_pool, SvREFCNT_inc (hv));
2468 }
2469 }
2470 else
2471 {
2472 /* first iteration, simply fall through */
2473 frame->prepare = prepare_nop;
2474 }
2475
2476 frame->check = slf_check_pool_handler;
2477 frame->data = (void *)coro;
2478}
2479
2480/*****************************************************************************/
2481/* rouse callback */
2482
2483#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2484
2485static void
2486coro_rouse_callback (pTHX_ CV *cv)
2487{
2488 dXSARGS;
2489 SV *data = (SV *)S_GENSUB_ARG;
2490
2491 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2492 {
2493 /* first call, set args */
2494 SV *coro = SvRV (data);
2495 AV *av = newAV ();
2496
2497 SvRV_set (data, (SV *)av);
2498
2499 /* better take a full copy of the arguments */
2500 while (items--)
2501 av_store (av, items, newSVsv (ST (items)));
2502
2503 api_ready (aTHX_ coro);
2504 SvREFCNT_dec (coro);
2505 }
2506
2507 XSRETURN_EMPTY;
2508}
2509
2510static int
2511slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2512{
2513 SV *data = (SV *)frame->data;
2514
2515 if (CORO_THROW)
2516 return 0;
2517
2518 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2519 return 1;
2520
2521 /* now push all results on the stack */
2522 {
2523 dSP;
2524 AV *av = (AV *)SvRV (data);
2525 int i;
2526
2527 EXTEND (SP, AvFILLp (av) + 1);
2528 for (i = 0; i <= AvFILLp (av); ++i)
2529 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2530
2531 /* we have stolen the elements, so set length to zero and free */
2532 AvFILLp (av) = -1;
2533 av_undef (av);
2534
2535 PUTBACK;
2536 }
2537
2538 return 0;
2539}
2540
2541static void
2542slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2543{
2544 SV *cb;
2545
2546 if (items)
2547 cb = arg [0];
2548 else
2549 {
2550 struct coro *coro = SvSTATE_current;
2551
2552 if (!coro->rouse_cb)
2553 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2554
2555 cb = sv_2mortal (coro->rouse_cb);
2556 coro->rouse_cb = 0;
2557 }
2558
2559 if (!SvROK (cb)
2560 || SvTYPE (SvRV (cb)) != SVt_PVCV
2561 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2562 croak ("Coro::rouse_wait called with illegal callback argument,");
2563
2564 {
2565 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2566 SV *data = (SV *)S_GENSUB_ARG;
2567
2568 frame->data = (void *)data;
2569 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2570 frame->check = slf_check_rouse_wait;
2571 }
2572}
2573
2574static SV *
2575coro_new_rouse_cb (pTHX)
2576{
2577 HV *hv = (HV *)SvRV (coro_current);
2578 struct coro *coro = SvSTATE_hv (hv);
2579 SV *data = newRV_inc ((SV *)hv);
2580 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2581
2582 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2583 SvREFCNT_dec (data); /* magicext increases the refcount */
2584
2585 SvREFCNT_dec (coro->rouse_cb);
2586 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2587
2588 return cb;
2589}
2590
2591/*****************************************************************************/
2592/* schedule-like-function opcode (SLF) */
2593
2594static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2595static const CV *slf_cv;
2596static SV **slf_argv;
2597static int slf_argc, slf_arga; /* count, allocated */
2598static I32 slf_ax; /* top of stack, for restore */
2599
2600/* this restores the stack in the case we patched the entersub, to */
2601/* recreate the stack frame as perl will on following calls */
2602/* since entersub cleared the stack */
2603static OP *
2604pp_restore (pTHX)
2605{
2606 int i;
2607 SV **SP = PL_stack_base + slf_ax;
2608
2609 PUSHMARK (SP);
2610
2611 EXTEND (SP, slf_argc + 1);
2612
2613 for (i = 0; i < slf_argc; ++i)
2614 PUSHs (sv_2mortal (slf_argv [i]));
2615
2616 PUSHs ((SV *)CvGV (slf_cv));
2617
2618 RETURNOP (slf_restore.op_first);
2619}
2620
2621static void
2622slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2623{
2624 SV **arg = (SV **)slf_frame.data;
2625
2626 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2627}
2628
2629static void
2630slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2631{
2632 if (items != 2)
2633 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2634
2635 frame->prepare = slf_prepare_transfer;
2636 frame->check = slf_check_nop;
2637 frame->data = (void *)arg; /* let's hope it will stay valid */
2638}
2639
2640static void
2641slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2642{
2643 frame->prepare = prepare_schedule;
2644 frame->check = slf_check_nop;
2645}
2646
2647static void
2648slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2649{
2650 struct coro *next = (struct coro *)slf_frame.data;
2651
2652 SvREFCNT_inc_NN (next->hv);
2653 prepare_schedule_to (aTHX_ ta, next);
2654}
2655
2656static void
2657slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2658{
2659 if (!items)
2660 croak ("Coro::schedule_to expects a coroutine argument, caught");
2661
2662 frame->data = (void *)SvSTATE (arg [0]);
2663 frame->prepare = slf_prepare_schedule_to;
2664 frame->check = slf_check_nop;
2665}
2666
2667static void
2668slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2669{
2670 api_ready (aTHX_ SvRV (coro_current));
2671
2672 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2673}
2674
2675static void
2676slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2677{
2678 frame->prepare = prepare_cede;
2679 frame->check = slf_check_nop;
2680}
2681
2682static void
2683slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2684{
2685 frame->prepare = prepare_cede_notself;
2686 frame->check = slf_check_nop;
2687}
2688
2689/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2690static void
2691slf_destroy (pTHX_ struct coro *coro)
2692{
2693 struct CoroSLF frame = coro->slf_frame;
2694
2695 /*
2696 * The on_destroy below most likely is from an SLF call.
2697 * Since by definition the SLF call will not finish when we destroy
2698 * the coro, we will have to force-finish it here, otherwise
2699 * cleanup functions cannot call SLF functions.
2700 */
2701 coro->slf_frame.prepare = 0;
2702
2703 /* this callback is reserved for slf functions needing to do cleanup */
2704 if (frame.destroy && frame.prepare && !PL_dirty)
2705 frame.destroy (aTHX_ &frame);
2706}
2707
2708/*
2709 * these not obviously related functions are all rolled into one
2710 * function to increase chances that they all will call transfer with the same
2711 * stack offset
2712 * SLF stands for "schedule-like-function".
2713 */
2714static OP *
2715pp_slf (pTHX)
2716{
2717 I32 checkmark; /* mark SP to see how many elements check has pushed */
2718
2719 /* set up the slf frame, unless it has already been set-up */
2720 /* the latter happens when a new coro has been started */
2721 /* or when a new cctx was attached to an existing coroutine */
2722 if (ecb_expect_true (!slf_frame.prepare))
2723 {
2724 /* first iteration */
2725 dSP;
2726 SV **arg = PL_stack_base + TOPMARK + 1;
2727 int items = SP - arg; /* args without function object */
2728 SV *gv = *sp;
2729
2730 /* do a quick consistency check on the "function" object, and if it isn't */
2731 /* for us, divert to the real entersub */
2732 if (SvTYPE (gv) != SVt_PVGV
2733 || !GvCV (gv)
2734 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2735 return PL_ppaddr[OP_ENTERSUB](aTHX);
2736
2737 if (!(PL_op->op_flags & OPf_STACKED))
2738 {
2739 /* ampersand-form of call, use @_ instead of stack */
2740 AV *av = GvAV (PL_defgv);
2741 arg = AvARRAY (av);
2742 items = AvFILLp (av) + 1;
2743 }
2744
2745 /* now call the init function, which needs to set up slf_frame */
2746 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2747 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2748
2749 /* pop args */
2750 SP = PL_stack_base + POPMARK;
2751
2752 PUTBACK;
2753 }
2754
2755 /* now that we have a slf_frame, interpret it! */
2756 /* we use a callback system not to make the code needlessly */
2757 /* complicated, but so we can run multiple perl coros from one cctx */
2758
2759 do
2760 {
2761 struct coro_transfer_args ta;
2762
2763 slf_frame.prepare (aTHX_ &ta);
2764 TRANSFER (ta, 0);
2765
2766 checkmark = PL_stack_sp - PL_stack_base;
2767 }
2768 while (slf_frame.check (aTHX_ &slf_frame));
2769
2770 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2771
2772 /* exception handling */
2773 if (ecb_expect_false (CORO_THROW))
2774 {
2775 SV *exception = sv_2mortal (CORO_THROW);
2776
2777 CORO_THROW = 0;
2778 sv_setsv (ERRSV, exception);
2779 croak (0);
2780 }
2781
2782 /* return value handling - mostly like entersub */
2783 /* make sure we put something on the stack in scalar context */
2784 if (GIMME_V == G_SCALAR
2785 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2786 {
2787 dSP;
2788 SV **bot = PL_stack_base + checkmark;
2789
2790 if (sp == bot) /* too few, push undef */
2791 bot [1] = &PL_sv_undef;
2792 else /* too many, take last one */
2793 bot [1] = *sp;
2794
2795 SP = bot + 1;
2796
2797 PUTBACK;
2798 }
2799
2800 return NORMAL;
2801}
2802
2803static void
2804api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2805{
2806 int i;
2807 SV **arg = PL_stack_base + ax;
2808 int items = PL_stack_sp - arg + 1;
2809
2810 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2811
2812 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2813 && PL_op->op_ppaddr != pp_slf)
2814 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2815
2816 CvFLAGS (cv) |= CVf_SLF;
2817 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2818 slf_cv = cv;
2819
2820 /* we patch the op, and then re-run the whole call */
2821 /* we have to put the same argument on the stack for this to work */
2822 /* and this will be done by pp_restore */
2823 slf_restore.op_next = (OP *)&slf_restore;
2824 slf_restore.op_type = OP_CUSTOM;
2825 slf_restore.op_ppaddr = pp_restore;
2826 slf_restore.op_first = PL_op;
2827
2828 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2829
2830 if (PL_op->op_flags & OPf_STACKED)
2831 {
2832 if (items > slf_arga)
2833 {
2834 slf_arga = items;
2835 Safefree (slf_argv);
2836 New (0, slf_argv, slf_arga, SV *);
2837 }
2838
2839 slf_argc = items;
2840
2841 for (i = 0; i < items; ++i)
2842 slf_argv [i] = SvREFCNT_inc (arg [i]);
2843 }
2844 else
2845 slf_argc = 0;
2846
2847 PL_op->op_ppaddr = pp_slf;
2848 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2849
2850 PL_op = (OP *)&slf_restore;
2851}
2852
2853/*****************************************************************************/
2854/* dynamic wind */
2855
2856static void
2857on_enterleave_call (pTHX_ SV *cb)
2858{
2859 dSP;
2860
2861 PUSHSTACK;
2862
2863 PUSHMARK (SP);
2864 PUTBACK;
2865 call_sv (cb, G_VOID | G_DISCARD);
2866 SPAGAIN;
2867
2868 POPSTACK;
2869}
2870
2871static SV *
2872coro_avp_pop_and_free (pTHX_ AV **avp)
2873{
2874 AV *av = *avp;
2875 SV *res = av_pop (av);
2876
2877 if (AvFILLp (av) < 0)
2878 {
2879 *avp = 0;
2880 SvREFCNT_dec (av);
2881 }
2882
2883 return res;
2884}
2885
2886static void
2887coro_pop_on_enter (pTHX_ void *coro)
2888{
2889 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2890 SvREFCNT_dec (cb);
2891}
2892
2893static void
2894coro_pop_on_leave (pTHX_ void *coro)
2895{
2896 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2897 on_enterleave_call (aTHX_ sv_2mortal (cb));
2898}
2899
2900static void
2901enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2902{
2903 if (!hook)
2904 return;
2905
2906 if (!*avp)
2907 {
2908 *avp = newAV ();
2909 AvREAL_off (*avp);
2910 }
2911
2912 av_push (*avp, (SV *)hook);
2913 av_push (*avp, (SV *)arg);
2914}
2915
2916static void
2917enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2918{
2919 AV *av = *avp;
2920 int i;
2921
2922 if (!av)
2923 return;
2924
2925 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2926 if (AvARRAY (av)[i] == (SV *)hook)
2927 {
2928 if (execute)
2929 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2930
2931 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2932 av_pop (av);
2933 av_pop (av);
2934 break;
2935 }
2936
2937 if (AvFILLp (av) >= 0)
2938 {
2939 *avp = 0;
2940 SvREFCNT_dec_NN (av);
2941 }
2942}
2943
2944static void
2945api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2946{
2947 struct coro *coro = SvSTATE (coro_sv);
2948
2949 if (SvSTATE_current == coro)
2950 if (enter)
2951 enter (aTHX_ enter_arg);
2952
2953 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2954 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2955}
2956
2957static void
2958api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2959{
2960 struct coro *coro = SvSTATE (coro_sv);
2961
2962 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2963 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2964}
2965
2966static void
2967savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2968{
2969 struct coro *coro = SvSTATE_current;
2970
2971 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2972}
2973
2974static void
2975savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2976{
2977 struct coro *coro = SvSTATE_current;
2978
2979 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2980}
2981
2982static void
2983api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2984{
2985 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2986
2987 /* this ought to be much cheaper than malloc + a single destructor call */
2988 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2989 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2990}
2991
1704/*****************************************************************************/ 2992/*****************************************************************************/
1705/* PerlIO::cede */ 2993/* PerlIO::cede */
1706 2994
1707typedef struct 2995typedef struct
1708{ 2996{
1709 PerlIOBuf base; 2997 PerlIOBuf base;
1710 NV next, every; 2998 NV next, every;
1711} PerlIOCede; 2999} PerlIOCede;
1712 3000
1713static IV 3001static IV ecb_cold
1714PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 3002PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1715{ 3003{
1716 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3004 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1717 3005
1718 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3006 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1719 self->next = nvtime () + self->every; 3007 self->next = nvtime () + self->every;
1720 3008
1721 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3009 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1722} 3010}
1723 3011
1724static SV * 3012static SV * ecb_cold
1725PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3013PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1726{ 3014{
1727 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3015 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1728 3016
1729 return newSVnv (self->every); 3017 return newSVnv (self->every);
… …
1775 PerlIOBuf_get_cnt, 3063 PerlIOBuf_get_cnt,
1776 PerlIOBuf_set_ptrcnt, 3064 PerlIOBuf_set_ptrcnt,
1777}; 3065};
1778 3066
1779/*****************************************************************************/ 3067/*****************************************************************************/
3068/* Coro::Semaphore & Coro::Signal */
1780 3069
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP * 3070static SV *
1791pp_restore (pTHX) 3071coro_waitarray_new (pTHX_ int count)
1792{ 3072{
1793 int i; 3073 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
1794 SV **SP = PL_stack_base + slf_ax; 3074 AV *av = newAV ();
3075 SV **ary;
1795 3076
1796 PUSHMARK (SP); 3077 /* unfortunately, building manually saves memory */
3078 Newx (ary, 2, SV *);
3079 AvALLOC (av) = ary;
3080#if PERL_VERSION_ATLEAST (5,10,0)
3081 AvARRAY (av) = ary;
3082#else
3083 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3084 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3085 SvPVX ((SV *)av) = (char *)ary;
3086#endif
3087 AvMAX (av) = 1;
3088 AvFILLp (av) = 0;
3089 ary [0] = newSViv (count);
1797 3090
1798 EXTEND (SP, slf_argc + 1); 3091 return newRV_noinc ((SV *)av);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806} 3092}
1807 3093
1808static void 3094/* semaphore */
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (items > slf_arga)
1988 {
1989 slf_arga = items;
1990 free (slf_argv);
1991 slf_argv = malloc (slf_arga * sizeof (SV *));
1992 }
1993
1994 slf_argc = items;
1995
1996 for (i = 0; i < items; ++i)
1997 slf_argv [i] = SvREFCNT_inc (arg [i]);
1998
1999 PL_op->op_ppaddr = pp_slf;
2000 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2001
2002 PL_op = (OP *)&slf_restore;
2003}
2004
2005/*****************************************************************************/
2006 3095
2007static void 3096static void
2008coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 3097coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2009{ 3098{
2010 SV *count_sv = AvARRAY (av)[0]; 3099 SV *count_sv = AvARRAY (av)[0];
… …
2022 AvARRAY (av)[0] = AvARRAY (av)[1]; 3111 AvARRAY (av)[0] = AvARRAY (av)[1];
2023 AvARRAY (av)[1] = count_sv; 3112 AvARRAY (av)[1] = count_sv;
2024 cb = av_shift (av); 3113 cb = av_shift (av);
2025 3114
2026 if (SvOBJECT (cb)) 3115 if (SvOBJECT (cb))
3116 {
2027 api_ready (aTHX_ cb); 3117 api_ready (aTHX_ cb);
2028 else 3118 --count;
2029 croak ("callbacks not yet supported"); 3119 }
3120 else if (SvTYPE (cb) == SVt_PVCV)
3121 {
3122 dSP;
3123 PUSHMARK (SP);
3124 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3125 PUTBACK;
3126 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3127 }
2030 3128
2031 SvREFCNT_dec (cb); 3129 SvREFCNT_dec_NN (cb);
2032
2033 --count;
2034 } 3130 }
2035} 3131}
2036 3132
2037static void 3133static void
2038coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3134coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2039{ 3135{
2040 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3136 /* call $sem->adjust (0) to possibly wake up some other waiters */
2041 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3137 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2042} 3138}
2043 3139
2044static int 3140static int
2045slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3141slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2046{ 3142{
2047 AV *av = (AV *)frame->data; 3143 AV *av = (AV *)frame->data;
2048 SV *count_sv = AvARRAY (av)[0]; 3144 SV *count_sv = AvARRAY (av)[0];
3145 SV *coro_hv = SvRV (coro_current);
2049 3146
3147 frame->destroy = 0;
3148
3149 /* if we are about to throw, don't actually acquire the lock, just throw */
3150 if (ecb_expect_false (CORO_THROW))
3151 {
3152 /* we still might be responsible for the semaphore, so wake up others */
3153 coro_semaphore_adjust (aTHX_ av, 0);
3154
3155 return 0;
3156 }
2050 if (SvIVX (count_sv) > 0) 3157 else if (SvIVX (count_sv) > 0)
2051 { 3158 {
2052 SvSTATE_current->on_destroy = 0; 3159 if (acquire)
2053 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3160 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3161 else
3162 coro_semaphore_adjust (aTHX_ av, 0);
3163
2054 return 0; 3164 return 0;
2055 } 3165 }
2056 else 3166 else
2057 { 3167 {
2058 int i; 3168 int i;
2059 /* if we were woken up but can't down, we look through the whole */ 3169 /* if we were woken up but can't down, we look through the whole */
2060 /* waiters list and only add us if we aren't in there already */ 3170 /* waiters list and only add us if we aren't in there already */
2061 /* this avoids some degenerate memory usage cases */ 3171 /* this avoids some degenerate memory usage cases */
2062 3172 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2063 for (i = 1; i <= AvFILLp (av); ++i)
2064 if (AvARRAY (av)[i] == SvRV (coro_current)) 3173 if (AvARRAY (av)[i] == coro_hv)
2065 return 1; 3174 return 1;
2066 3175
2067 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3176 av_push (av, SvREFCNT_inc (coro_hv));
2068 return 1; 3177 return 1;
2069 } 3178 }
2070} 3179}
2071 3180
2072static void 3181static int
3182slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3183{
3184 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3185}
3186
3187static int
3188slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3189{
3190 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3191}
3192
3193static void
2073slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3194slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{ 3195{
2075 AV *av = (AV *)SvRV (arg [0]); 3196 AV *av = (AV *)SvRV (arg [0]);
2076 3197
2077 if (SvIVX (AvARRAY (av)[0]) > 0) 3198 if (SvIVX (AvARRAY (av)[0]) > 0)
2078 { 3199 {
2079 frame->data = (void *)av; 3200 frame->data = (void *)av;
2080 frame->prepare = prepare_nop; 3201 frame->prepare = prepare_nop;
2081 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2082 } 3202 }
2083 else 3203 else
2084 { 3204 {
2085 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3205 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2086 3206
2087 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3207 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2088 frame->prepare = prepare_schedule; 3208 frame->prepare = prepare_schedule;
2089
2090 /* to avoid race conditions when a woken-up coro gets terminated */ 3209 /* to avoid race conditions when a woken-up coro gets terminated */
2091 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3210 /* we arrange for a temporary on_destroy that calls adjust (0) */
2092 assert (!SvSTATE_current->on_destroy);//D
2093 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3211 frame->destroy = coro_semaphore_destroy;
2094 } 3212 }
3213}
2095 3214
3215static void
3216slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3217{
3218 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2096 frame->check = slf_check_semaphore_down; 3219 frame->check = slf_check_semaphore_down;
3220}
2097 3221
3222static void
3223slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3224{
3225 if (items >= 2)
3226 {
3227 /* callback form */
3228 AV *av = (AV *)SvRV (arg [0]);
3229 SV *cb_cv = s_get_cv_croak (arg [1]);
3230
3231 av_push (av, SvREFCNT_inc_NN (cb_cv));
3232
3233 if (SvIVX (AvARRAY (av)[0]) > 0)
3234 coro_semaphore_adjust (aTHX_ av, 0);
3235
3236 frame->prepare = prepare_nop;
3237 frame->check = slf_check_nop;
3238 }
3239 else
3240 {
3241 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3242 frame->check = slf_check_semaphore_wait;
3243 }
3244}
3245
3246/* signal */
3247
3248static void
3249coro_signal_wake (pTHX_ AV *av, int count)
3250{
3251 SvIVX (AvARRAY (av)[0]) = 0;
3252
3253 /* now signal count waiters */
3254 while (count > 0 && AvFILLp (av) > 0)
3255 {
3256 SV *cb;
3257
3258 /* swap first two elements so we can shift a waiter */
3259 cb = AvARRAY (av)[0];
3260 AvARRAY (av)[0] = AvARRAY (av)[1];
3261 AvARRAY (av)[1] = cb;
3262
3263 cb = av_shift (av);
3264
3265 if (SvTYPE (cb) == SVt_PVCV)
3266 {
3267 dSP;
3268 PUSHMARK (SP);
3269 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3270 PUTBACK;
3271 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3272 }
3273 else
3274 {
3275 api_ready (aTHX_ cb);
3276 sv_setiv (cb, 0); /* signal waiter */
3277 }
3278
3279 SvREFCNT_dec_NN (cb);
3280
3281 --count;
3282 }
3283}
3284
3285static int
3286slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3287{
3288 /* if we are about to throw, also stop waiting */
3289 return SvROK ((SV *)frame->data) && !CORO_THROW;
3290}
3291
3292static void
3293slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3294{
3295 AV *av = (AV *)SvRV (arg [0]);
3296
3297 if (items >= 2)
3298 {
3299 SV *cb_cv = s_get_cv_croak (arg [1]);
3300 av_push (av, SvREFCNT_inc_NN (cb_cv));
3301
3302 if (SvIVX (AvARRAY (av)[0]))
3303 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3304
3305 frame->prepare = prepare_nop;
3306 frame->check = slf_check_nop;
3307 }
3308 else if (SvIVX (AvARRAY (av)[0]))
3309 {
3310 SvIVX (AvARRAY (av)[0]) = 0;
3311 frame->prepare = prepare_nop;
3312 frame->check = slf_check_nop;
3313 }
3314 else
3315 {
3316 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3317
3318 av_push (av, waiter);
3319
3320 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3321 frame->prepare = prepare_schedule;
3322 frame->check = slf_check_signal_wait;
3323 }
2098} 3324}
2099 3325
2100/*****************************************************************************/ 3326/*****************************************************************************/
3327/* Coro::AIO */
2101 3328
2102#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3329#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2103 3330
2104/* create a closure from XS, returns a code reference */ 3331/* helper storage struct */
2105/* the arg can be accessed via GENSUB_ARG from the callback */ 3332struct io_state
2106/* the callback must use dXSARGS/XSRETURN */ 3333{
3334 int errorno;
3335 I32 laststype; /* U16 in 5.10.0 */
3336 int laststatval;
3337 Stat_t statcache;
3338};
3339
3340static void
3341coro_aio_callback (pTHX_ CV *cv)
3342{
3343 dXSARGS;
3344 AV *state = (AV *)S_GENSUB_ARG;
3345 SV *coro = av_pop (state);
3346 SV *data_sv = newSV (sizeof (struct io_state));
3347
3348 av_extend (state, items - 1);
3349
3350 sv_upgrade (data_sv, SVt_PV);
3351 SvCUR_set (data_sv, sizeof (struct io_state));
3352 SvPOK_only (data_sv);
3353
3354 {
3355 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3356
3357 data->errorno = errno;
3358 data->laststype = PL_laststype;
3359 data->laststatval = PL_laststatval;
3360 data->statcache = PL_statcache;
3361 }
3362
3363 /* now build the result vector out of all the parameters and the data_sv */
3364 {
3365 int i;
3366
3367 for (i = 0; i < items; ++i)
3368 av_push (state, SvREFCNT_inc_NN (ST (i)));
3369 }
3370
3371 av_push (state, data_sv);
3372
3373 api_ready (aTHX_ coro);
3374 SvREFCNT_dec_NN (coro);
3375 SvREFCNT_dec_NN ((AV *)state);
3376}
3377
3378static int
3379slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3380{
3381 AV *state = (AV *)frame->data;
3382
3383 /* if we are about to throw, return early */
3384 /* this does not cancel the aio request, but at least */
3385 /* it quickly returns */
3386 if (CORO_THROW)
3387 return 0;
3388
3389 /* one element that is an RV? repeat! */
3390 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3391 return 1;
3392
3393 /* restore status */
3394 {
3395 SV *data_sv = av_pop (state);
3396 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3397
3398 errno = data->errorno;
3399 PL_laststype = data->laststype;
3400 PL_laststatval = data->laststatval;
3401 PL_statcache = data->statcache;
3402
3403 SvREFCNT_dec_NN (data_sv);
3404 }
3405
3406 /* push result values */
3407 {
3408 dSP;
3409 int i;
3410
3411 EXTEND (SP, AvFILLp (state) + 1);
3412 for (i = 0; i <= AvFILLp (state); ++i)
3413 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3414
3415 PUTBACK;
3416 }
3417
3418 return 0;
3419}
3420
3421static void
3422slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3423{
3424 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3425 SV *coro_hv = SvRV (coro_current);
3426 struct coro *coro = SvSTATE_hv (coro_hv);
3427
3428 /* put our coroutine id on the state arg */
3429 av_push (state, SvREFCNT_inc_NN (coro_hv));
3430
3431 /* first see whether we have a non-zero priority and set it as AIO prio */
3432 if (coro->prio)
3433 {
3434 dSP;
3435
3436 static SV *prio_cv;
3437 static SV *prio_sv;
3438
3439 if (ecb_expect_false (!prio_cv))
3440 {
3441 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3442 prio_sv = newSViv (0);
3443 }
3444
3445 PUSHMARK (SP);
3446 sv_setiv (prio_sv, coro->prio);
3447 XPUSHs (prio_sv);
3448
3449 PUTBACK;
3450 call_sv (prio_cv, G_VOID | G_DISCARD);
3451 }
3452
3453 /* now call the original request */
3454 {
3455 dSP;
3456 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3457 int i;
3458
3459 PUSHMARK (SP);
3460
3461 /* first push all args to the stack */
3462 EXTEND (SP, items + 1);
3463
3464 for (i = 0; i < items; ++i)
3465 PUSHs (arg [i]);
3466
3467 /* now push the callback closure */
3468 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3469
3470 /* now call the AIO function - we assume our request is uncancelable */
3471 PUTBACK;
3472 call_sv ((SV *)req, G_VOID | G_DISCARD);
3473 }
3474
3475 /* now that the request is going, we loop till we have a result */
3476 frame->data = (void *)state;
3477 frame->prepare = prepare_schedule;
3478 frame->check = slf_check_aio_req;
3479}
3480
3481static void
3482coro_aio_req_xs (pTHX_ CV *cv)
3483{
3484 dXSARGS;
3485
3486 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3487
3488 XSRETURN_EMPTY;
3489}
3490
3491/*****************************************************************************/
3492
3493#if CORO_CLONE
3494# include "clone.c"
3495#endif
3496
3497/*****************************************************************************/
3498
2107static SV * 3499static SV *
2108gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3500coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2109{ 3501{
2110 CV *cv = (CV *)NEWSV (0, 0); 3502 SV *coro_sv;
3503 struct coro *coro;
3504 MAGIC *mg;
3505 HV *hv;
3506 SV *cb;
3507 int i;
2111 3508
2112 sv_upgrade ((SV *)cv, SVt_PVCV); 3509 if (argc > 0)
3510 {
3511 cb = s_get_cv_croak (argv [0]);
2113 3512
2114 CvANON_on (cv); 3513 if (!is_coro)
2115 CvISXSUB_on (cv); 3514 {
2116 CvXSUB (cv) = xsub; 3515 if (CvISXSUB (cb))
2117 GENSUB_ARG = arg; 3516 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2118 3517
2119 return newRV_noinc ((SV *)cv); 3518 if (!CvROOT (cb))
2120} 3519 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3520 }
3521 }
2121 3522
2122/*****************************************************************************/ 3523 Newz (0, coro, 1, struct coro);
3524 coro->args = newAV ();
3525 coro->flags = CF_NEW;
3526
3527 if (coro_first) coro_first->prev = coro;
3528 coro->next = coro_first;
3529 coro_first = coro;
3530
3531 coro->hv = hv = newHV ();
3532 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3533 mg->mg_flags |= MGf_DUP;
3534 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3535
3536 if (argc > 0)
3537 {
3538 av_extend (coro->args, argc + is_coro - 1);
3539
3540 if (is_coro)
3541 {
3542 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3543 cb = (SV *)cv_coro_run;
3544 }
3545
3546 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3547
3548 for (i = 1; i < argc; i++)
3549 av_push (coro->args, newSVsv (argv [i]));
3550 }
3551
3552 return coro_sv;
3553}
3554
3555#ifndef __cplusplus
3556ecb_cold XS(boot_Coro__State);
3557#endif
3558
3559#if CORO_JIT
3560
3561static void ecb_noinline ecb_cold
3562pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3563{
3564 dSP;
3565 AV *av = newAV ();
3566
3567 av_store (av, 3, newSVuv (d));
3568 av_store (av, 2, newSVuv (c));
3569 av_store (av, 1, newSVuv (b));
3570 av_store (av, 0, newSVuv (a));
3571
3572 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3573
3574 PUTBACK;
3575}
3576
3577static void ecb_noinline ecb_cold
3578jit_init (pTHX)
3579{
3580 dSP;
3581 SV *load, *save;
3582 char *map_base;
3583 char *load_ptr, *save_ptr;
3584 STRLEN load_len, save_len, map_len;
3585 int count;
3586
3587 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3588
3589 PUSHMARK (SP);
3590 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3591 #include "state.h"
3592 count = call_pv ("Coro::State::_jit", G_ARRAY);
3593 SPAGAIN;
3594
3595 save = POPs; save_ptr = SvPVbyte (save, save_len);
3596 load = POPs; load_ptr = SvPVbyte (load, load_len);
3597
3598 map_len = load_len + save_len + 16;
3599
3600 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3601
3602 if (map_base == (char *)MAP_FAILED)
3603 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3604
3605 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3606
3607 load_perl_slots = (load_save_perl_slots_type)map_base;
3608 memcpy (map_base, load_ptr, load_len);
3609
3610 map_base += (load_len + 15) & ~15;
3611
3612 save_perl_slots = (load_save_perl_slots_type)map_base;
3613 memcpy (map_base, save_ptr, save_len);
3614
3615 /* we are good citizens and try to make the page read-only, so the evil evil */
3616 /* hackers might have it a bit more difficult */
3617 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3618
3619 PUTBACK;
3620 eval_pv ("undef &Coro::State::_jit", 1);
3621}
3622
3623#endif
2123 3624
2124MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3625MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2125 3626
2126PROTOTYPES: DISABLE 3627PROTOTYPES: DISABLE
2127 3628
2128BOOT: 3629BOOT:
2129{ 3630{
3631#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3632#include "state.h"
2130#ifdef USE_ITHREADS 3633#ifdef USE_ITHREADS
2131# if CORO_PTHREAD 3634# if CORO_PTHREAD
2132 coro_thx = PERL_GET_CONTEXT; 3635 coro_thx = PERL_GET_CONTEXT;
2133# endif 3636# endif
2134#endif 3637#endif
2135 BOOT_PAGESIZE; 3638 /* perl defines these to check for existance first, but why it doesn't */
3639 /* just create them one at init time is not clear to me, except for */
3640 /* programs trying to delete them, but... */
3641 /* anyway, we declare this as invalid and make sure they are initialised here */
3642 DEFSV;
3643 ERRSV;
3644
3645 cctx_current = cctx_new_empty ();
2136 3646
2137 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3647 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2138 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3648 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2139 3649
2140 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3650 {
2141 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3651 /*
2142 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3652 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3653 * by coro_sig_vtbl in hash values.
3654 */
3655 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3656
3657 /* this only works if perl doesn't have a vtbl for %SIG */
3658 assert (!mg->mg_virtual);
3659
3660 /*
3661 * The irony is that the perl API itself asserts that mg_virtual
3662 * must be non-const, yet perl5porters insisted on marking their
3663 * vtbls as read-only, just to thwart perl modules from patching
3664 * them.
3665 */
3666 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3667 mg->mg_flags |= MGf_COPY;
3668
3669 coro_sigelem_vtbl = PL_vtbl_sigelem;
3670 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3671 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3672 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3673 }
2143 3674
2144 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2145 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3675 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2146 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3676 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2147 3677
2148 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3678 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
2149 3679
… …
2160 3690
2161 { 3691 {
2162 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3692 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2163 3693
2164 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3694 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2165 hv_store_ent (PL_custom_op_names, slf, 3695 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2166 newSVpv ("coro_slf", 0), 0);
2167 3696
2168 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3697 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2169 hv_store_ent (PL_custom_op_descs, slf, 3698 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2170 newSVpv ("coro schedule like function", 0), 0);
2171 } 3699 }
2172 3700
2173 coroapi.ver = CORO_API_VERSION; 3701 coroapi.ver = CORO_API_VERSION;
2174 coroapi.rev = CORO_API_REVISION; 3702 coroapi.rev = CORO_API_REVISION;
2175 3703
… …
2180 coroapi.prepare_nop = prepare_nop; 3708 coroapi.prepare_nop = prepare_nop;
2181 coroapi.prepare_schedule = prepare_schedule; 3709 coroapi.prepare_schedule = prepare_schedule;
2182 coroapi.prepare_cede = prepare_cede; 3710 coroapi.prepare_cede = prepare_cede;
2183 coroapi.prepare_cede_notself = prepare_cede_notself; 3711 coroapi.prepare_cede_notself = prepare_cede_notself;
2184 3712
2185 { 3713 time_init (aTHX);
2186 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2187 3714
2188 if (!svp) croak ("Time::HiRes is required");
2189 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2190
2191 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2192 }
2193
2194 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3715 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3716#if CORO_JIT
3717 PUTBACK;
3718 jit_init (aTHX);
3719 SPAGAIN;
3720#endif
2195} 3721}
2196 3722
2197SV * 3723SV *
2198new (char *klass, ...) 3724new (SV *klass, ...)
3725 ALIAS:
3726 Coro::new = 1
2199 CODE: 3727 CODE:
2200{ 3728 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2201 struct coro *coro; 3729 OUTPUT:
2202 MAGIC *mg;
2203 HV *hv;
2204 int i;
2205
2206 Newz (0, coro, 1, struct coro);
2207 coro->args = newAV ();
2208 coro->flags = CF_NEW;
2209
2210 if (coro_first) coro_first->prev = coro;
2211 coro->next = coro_first;
2212 coro_first = coro;
2213
2214 coro->hv = hv = newHV ();
2215 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2216 mg->mg_flags |= MGf_DUP;
2217 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2218
2219 av_extend (coro->args, items - 1);
2220 for (i = 1; i < items; i++)
2221 av_push (coro->args, newSVsv (ST (i)));
2222}
2223 OUTPUT:
2224 RETVAL 3730 RETVAL
2225
2226void
2227_set_stacklevel (...)
2228 CODE:
2229 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2230 3731
2231void 3732void
2232transfer (...) 3733transfer (...)
2233 PROTOTYPE: $$ 3734 PROTOTYPE: $$
2234 CODE: 3735 CODE:
2235 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3736 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2236 3737
2237bool 3738SV *
2238_destroy (SV *coro_sv) 3739clone (Coro::State coro)
2239 CODE: 3740 CODE:
2240 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3741{
3742#if CORO_CLONE
3743 struct coro *ncoro = coro_clone (aTHX_ coro);
3744 MAGIC *mg;
3745 /* TODO: too much duplication */
3746 ncoro->hv = newHV ();
3747 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3748 mg->mg_flags |= MGf_DUP;
3749 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3750#else
3751 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3752#endif
3753}
2241 OUTPUT: 3754 OUTPUT:
2242 RETVAL 3755 RETVAL
2243
2244void
2245_exit (int code)
2246 PROTOTYPE: $
2247 CODE:
2248 _exit (code);
2249 3756
2250int 3757int
2251cctx_stacksize (int new_stacksize = 0) 3758cctx_stacksize (int new_stacksize = 0)
2252 PROTOTYPE: ;$ 3759 PROTOTYPE: ;$
2253 CODE: 3760 CODE:
… …
2289void 3796void
2290list () 3797list ()
2291 PROTOTYPE: 3798 PROTOTYPE:
2292 PPCODE: 3799 PPCODE:
2293{ 3800{
2294 struct coro *coro; 3801 struct coro *coro;
2295 for (coro = coro_first; coro; coro = coro->next) 3802 for (coro = coro_first; coro; coro = coro->next)
2296 if (coro->hv) 3803 if (coro->hv)
2297 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3804 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2298} 3805}
2299 3806
… …
2303 eval = 1 3810 eval = 1
2304 CODE: 3811 CODE:
2305{ 3812{
2306 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3813 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2307 { 3814 {
2308 struct coro temp; 3815 struct coro *current = SvSTATE_current;
3816 struct CoroSLF slf_save;
2309 3817
2310 if (!(coro->flags & CF_RUNNING)) 3818 if (current != coro)
2311 { 3819 {
2312 PUTBACK; 3820 PUTBACK;
2313 save_perl (aTHX_ &temp); 3821 save_perl (aTHX_ current);
2314 load_perl (aTHX_ coro); 3822 load_perl (aTHX_ coro);
3823 /* the coro is most likely in an active SLF call.
3824 * while not strictly required (the code we execute is
3825 * not allowed to call any SLF functions), it's cleaner
3826 * to reinitialise the slf_frame and restore it later.
3827 * This might one day allow us to actually do SLF calls
3828 * from code executed here.
3829 */
3830 slf_save = slf_frame;
3831 slf_frame.prepare = 0;
3832 SPAGAIN;
2315 } 3833 }
2316 3834
2317 {
2318 dSP;
2319 ENTER;
2320 SAVETMPS;
2321 PUTBACK;
2322 PUSHSTACK; 3835 PUSHSTACK;
3836
2323 PUSHMARK (SP); 3837 PUSHMARK (SP);
3838 PUTBACK;
2324 3839
2325 if (ix) 3840 if (ix)
2326 eval_sv (coderef, 0); 3841 eval_sv (coderef, 0);
2327 else 3842 else
2328 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3843 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2329 3844
2330 POPSTACK; 3845 POPSTACK;
2331 SPAGAIN; 3846 SPAGAIN;
2332 FREETMPS;
2333 LEAVE;
2334 PUTBACK;
2335 }
2336 3847
2337 if (!(coro->flags & CF_RUNNING)) 3848 if (current != coro)
2338 { 3849 {
3850 PUTBACK;
3851 slf_frame = slf_save;
2339 save_perl (aTHX_ coro); 3852 save_perl (aTHX_ coro);
2340 load_perl (aTHX_ &temp); 3853 load_perl (aTHX_ current);
2341 SPAGAIN; 3854 SPAGAIN;
2342 } 3855 }
2343 } 3856 }
2344} 3857}
2345 3858
… …
2348 PROTOTYPE: $ 3861 PROTOTYPE: $
2349 ALIAS: 3862 ALIAS:
2350 is_ready = CF_READY 3863 is_ready = CF_READY
2351 is_running = CF_RUNNING 3864 is_running = CF_RUNNING
2352 is_new = CF_NEW 3865 is_new = CF_NEW
2353 is_destroyed = CF_DESTROYED 3866 is_destroyed = CF_ZOMBIE
3867 is_zombie = CF_ZOMBIE
3868 is_suspended = CF_SUSPENDED
2354 CODE: 3869 CODE:
2355 RETVAL = boolSV (coro->flags & ix); 3870 RETVAL = boolSV (coro->flags & ix);
2356 OUTPUT: 3871 OUTPUT:
2357 RETVAL 3872 RETVAL
2358 3873
2359void 3874void
2360throw (Coro::State self, SV *throw = &PL_sv_undef) 3875throw (SV *self, SV *exception = &PL_sv_undef)
2361 PROTOTYPE: $;$ 3876 PROTOTYPE: $;$
2362 CODE: 3877 CODE:
2363{ 3878{
3879 struct coro *coro = SvSTATE (self);
2364 struct coro *current = SvSTATE_current; 3880 struct coro *current = SvSTATE_current;
2365 SV **throwp = self == current ? &coro_throw : &self->throw; 3881 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2366 SvREFCNT_dec (*throwp); 3882 SvREFCNT_dec (*exceptionp);
2367 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3883 SvGETMAGIC (exception);
3884 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3885
3886 api_ready (aTHX_ self);
2368} 3887}
2369 3888
2370void 3889void
2371api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3890api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2372 PROTOTYPE: $;$ 3891 PROTOTYPE: $;$
… …
2374 3893
2375SV * 3894SV *
2376has_cctx (Coro::State coro) 3895has_cctx (Coro::State coro)
2377 PROTOTYPE: $ 3896 PROTOTYPE: $
2378 CODE: 3897 CODE:
2379 RETVAL = boolSV (!!coro->cctx); 3898 /* maybe manage the running flag differently */
3899 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2380 OUTPUT: 3900 OUTPUT:
2381 RETVAL 3901 RETVAL
2382 3902
2383int 3903int
2384is_traced (Coro::State coro) 3904is_traced (Coro::State coro)
… …
2404 3924
2405void 3925void
2406force_cctx () 3926force_cctx ()
2407 PROTOTYPE: 3927 PROTOTYPE:
2408 CODE: 3928 CODE:
2409 SvSTATE_current->cctx->idle_sp = 0; 3929 cctx_current->idle_sp = 0;
2410 3930
2411void 3931void
2412swap_defsv (Coro::State self) 3932swap_defsv (Coro::State self)
2413 PROTOTYPE: $ 3933 PROTOTYPE: $
2414 ALIAS: 3934 ALIAS:
… …
2422 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3942 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2423 3943
2424 SV *tmp = *src; *src = *dst; *dst = tmp; 3944 SV *tmp = *src; *src = *dst; *dst = tmp;
2425 } 3945 }
2426 3946
3947void
3948cancel (Coro::State self)
3949 CODE:
3950 coro_state_destroy (aTHX_ self);
3951
3952SV *
3953enable_times (int enabled = enable_times)
3954 CODE:
3955{
3956 RETVAL = boolSV (enable_times);
3957
3958 if (enabled != enable_times)
3959 {
3960 enable_times = enabled;
3961
3962 coro_times_update ();
3963 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3964 }
3965}
3966 OUTPUT:
3967 RETVAL
3968
3969void
3970times (Coro::State self)
3971 PPCODE:
3972{
3973 struct coro *current = SvSTATE (coro_current);
3974
3975 if (ecb_expect_false (current == self))
3976 {
3977 coro_times_update ();
3978 coro_times_add (SvSTATE (coro_current));
3979 }
3980
3981 EXTEND (SP, 2);
3982 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3983 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3984
3985 if (ecb_expect_false (current == self))
3986 coro_times_sub (SvSTATE (coro_current));
3987}
3988
3989void
3990swap_sv (Coro::State coro, SV *sva, SV *svb)
3991 CODE:
3992{
3993 struct coro *current = SvSTATE_current;
3994 AV *swap_sv;
3995 int i;
3996
3997 sva = SvRV (sva);
3998 svb = SvRV (svb);
3999
4000 if (current == coro)
4001 SWAP_SVS_LEAVE (current);
4002
4003 if (!coro->swap_sv)
4004 coro->swap_sv = newAV ();
4005
4006 swap_sv = coro->swap_sv;
4007
4008 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
4009 {
4010 SV *a = AvARRAY (swap_sv)[i ];
4011 SV *b = AvARRAY (swap_sv)[i + 1];
4012
4013 if (a == sva && b == svb)
4014 {
4015 SvREFCNT_dec_NN (a);
4016 SvREFCNT_dec_NN (b);
4017
4018 for (; i <= AvFILLp (swap_sv) - 2; i++)
4019 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4020
4021 AvFILLp (swap_sv) -= 2;
4022
4023 goto removed;
4024 }
4025 }
4026
4027 av_push (swap_sv, SvREFCNT_inc_NN (sva));
4028 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4029
4030 removed:
4031
4032 if (current == coro)
4033 SWAP_SVS_ENTER (current);
4034}
4035
4036
2427MODULE = Coro::State PACKAGE = Coro 4037MODULE = Coro::State PACKAGE = Coro
2428 4038
2429BOOT: 4039BOOT:
2430{ 4040{
2431 int i; 4041 if (SVt_LAST > 32)
4042 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2432 4043
2433 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2434 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4044 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2435 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4045 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2436 4046 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2437 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 4047 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2438 SvREADONLY_on (coro_current); 4048 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
4049 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
4050 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
4051 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
4052
4053 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
4054 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
4055 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
4056 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2439 4057
2440 coro_stash = gv_stashpv ("Coro", TRUE); 4058 coro_stash = gv_stashpv ("Coro", TRUE);
2441 4059
2442 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4060 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2443 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4061 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2444 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4062 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2445 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4063 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2446 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4064 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2447 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4065 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2448
2449 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2450 coro_ready[i] = newAV ();
2451 4066
2452 { 4067 {
2453 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4068 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2454 4069
2455 coroapi.schedule = api_schedule; 4070 coroapi.schedule = api_schedule;
4071 coroapi.schedule_to = api_schedule_to;
2456 coroapi.cede = api_cede; 4072 coroapi.cede = api_cede;
2457 coroapi.cede_notself = api_cede_notself; 4073 coroapi.cede_notself = api_cede_notself;
2458 coroapi.ready = api_ready; 4074 coroapi.ready = api_ready;
2459 coroapi.is_ready = api_is_ready; 4075 coroapi.is_ready = api_is_ready;
2460 coroapi.nready = coro_nready; 4076 coroapi.nready = coro_nready;
2461 coroapi.current = coro_current; 4077 coroapi.current = coro_current;
2462 4078
4079 coroapi.enterleave_hook = api_enterleave_hook;
4080 coroapi.enterleave_unhook = api_enterleave_unhook;
4081 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4082
2463 GCoroAPI = &coroapi; 4083 /*GCoroAPI = &coroapi;*/
2464 sv_setiv (sv, (IV)&coroapi); 4084 sv_setiv (sv, PTR2IV (&coroapi));
2465 SvREADONLY_on (sv); 4085 SvREADONLY_on (sv);
2466 } 4086 }
2467} 4087}
4088
4089SV *
4090async (...)
4091 PROTOTYPE: &@
4092 CODE:
4093 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4094 api_ready (aTHX_ RETVAL);
4095 OUTPUT:
4096 RETVAL
4097
4098void
4099_destroy (Coro::State coro)
4100 CODE:
4101 /* used by the manager thread */
4102 coro_state_destroy (aTHX_ coro);
4103
4104void
4105on_destroy (Coro::State coro, SV *cb)
4106 CODE:
4107 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4108
4109void
4110join (...)
4111 CODE:
4112 CORO_EXECUTE_SLF_XS (slf_init_join);
4113
4114void
4115terminate (...)
4116 CODE:
4117 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4118
4119void
4120cancel (...)
4121 CODE:
4122 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4123
4124int
4125safe_cancel (Coro::State self, ...)
4126 C_ARGS: aTHX_ self, &ST (1), items - 1
2468 4127
2469void 4128void
2470schedule (...) 4129schedule (...)
2471 CODE: 4130 CODE:
2472 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4131 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2473 4132
2474void 4133void
4134schedule_to (...)
4135 CODE:
4136 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4137
4138void
4139cede_to (...)
4140 CODE:
4141 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
4142
4143void
2475cede (...) 4144cede (...)
2476 CODE: 4145 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_cede); 4146 CORO_EXECUTE_SLF_XS (slf_init_cede);
2478 4147
2479void 4148void
… …
2483 4152
2484void 4153void
2485_set_current (SV *current) 4154_set_current (SV *current)
2486 PROTOTYPE: $ 4155 PROTOTYPE: $
2487 CODE: 4156 CODE:
2488 SvREFCNT_dec (SvRV (coro_current)); 4157 SvREFCNT_dec_NN (SvRV (coro_current));
2489 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4158 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2490 4159
2491void 4160void
2492_set_readyhook (SV *hook) 4161_set_readyhook (SV *hook)
2493 PROTOTYPE: $ 4162 PROTOTYPE: $
2494 CODE: 4163 CODE:
2495 SvREFCNT_dec (coro_readyhook); 4164 SvREFCNT_dec (coro_readyhook);
4165 SvGETMAGIC (hook);
4166 if (SvOK (hook))
4167 {
2496 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4168 coro_readyhook = newSVsv (hook);
4169 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4170 }
4171 else
4172 {
4173 coro_readyhook = 0;
4174 CORO_READYHOOK = 0;
4175 }
2497 4176
2498int 4177int
2499prio (Coro::State coro, int newprio = 0) 4178prio (Coro::State coro, int newprio = 0)
2500 PROTOTYPE: $;$ 4179 PROTOTYPE: $;$
2501 ALIAS: 4180 ALIAS:
… …
2507 if (items > 1) 4186 if (items > 1)
2508 { 4187 {
2509 if (ix) 4188 if (ix)
2510 newprio = coro->prio - newprio; 4189 newprio = coro->prio - newprio;
2511 4190
2512 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4191 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2513 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4192 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2514 4193
2515 coro->prio = newprio; 4194 coro->prio = newprio;
2516 } 4195 }
2517} 4196}
2518 OUTPUT: 4197 OUTPUT:
… …
2532 CODE: 4211 CODE:
2533 RETVAL = coro_nready; 4212 RETVAL = coro_nready;
2534 OUTPUT: 4213 OUTPUT:
2535 RETVAL 4214 RETVAL
2536 4215
2537# for async_pool speedup
2538void 4216void
2539_pool_1 (SV *cb) 4217suspend (Coro::State self)
4218 PROTOTYPE: $
2540 CODE: 4219 CODE:
2541{ 4220 self->flags |= CF_SUSPENDED;
2542 HV *hv = (HV *)SvRV (coro_current);
2543 struct coro *coro = SvSTATE_hv ((SV *)hv);
2544 AV *defav = GvAV (PL_defgv);
2545 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2546 AV *invoke_av;
2547 int i, len;
2548 4221
2549 if (!invoke) 4222void
4223resume (Coro::State self)
4224 PROTOTYPE: $
4225 CODE:
4226 self->flags &= ~CF_SUSPENDED;
4227
4228void
4229_pool_handler (...)
4230 CODE:
4231 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4232
4233void
4234async_pool (SV *cv, ...)
4235 PROTOTYPE: &@
4236 PPCODE:
4237{
4238 HV *hv = (HV *)av_pop (av_async_pool);
4239 AV *av = newAV ();
4240 SV *cb = ST (0);
4241 int i;
4242
4243 av_extend (av, items - 2);
4244 for (i = 1; i < items; ++i)
4245 av_push (av, SvREFCNT_inc_NN (ST (i)));
4246
4247 if ((SV *)hv == &PL_sv_undef)
2550 { 4248 {
2551 SV *old = PL_diehook; 4249 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2552 PL_diehook = 0; 4250 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2553 SvREFCNT_dec (old); 4251 SvREFCNT_dec_NN (sv);
2554 croak ("\3async_pool terminate\2\n");
2555 } 4252 }
2556 4253
2557 SvREFCNT_dec (coro->saved_deffh);
2558 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2559
2560 hv_store (hv, "desc", sizeof ("desc") - 1,
2561 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2562
2563 invoke_av = (AV *)SvRV (invoke);
2564 len = av_len (invoke_av);
2565
2566 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2567
2568 if (len > 0)
2569 { 4254 {
2570 av_fill (defav, len - 1); 4255 struct coro *coro = SvSTATE_hv (hv);
2571 for (i = 0; i < len; ++i) 4256
2572 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4257 assert (!coro->invoke_cb);
4258 assert (!coro->invoke_av);
4259 coro->invoke_cb = SvREFCNT_inc (cb);
4260 coro->invoke_av = av;
2573 } 4261 }
4262
4263 api_ready (aTHX_ (SV *)hv);
4264
4265 if (GIMME_V != G_VOID)
4266 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4267 else
4268 SvREFCNT_dec_NN (hv);
2574} 4269}
4270
4271SV *
4272rouse_cb ()
4273 PROTOTYPE:
4274 CODE:
4275 RETVAL = coro_new_rouse_cb (aTHX);
4276 OUTPUT:
4277 RETVAL
2575 4278
2576void 4279void
2577_pool_2 (SV *cb) 4280rouse_wait (...)
4281 PROTOTYPE: ;$
4282 PPCODE:
4283 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4284
4285void
4286on_enter (SV *block)
4287 ALIAS:
4288 on_leave = 1
4289 PROTOTYPE: &
2578 CODE: 4290 CODE:
2579{ 4291{
2580 HV *hv = (HV *)SvRV (coro_current);
2581 struct coro *coro = SvSTATE_hv ((SV *)hv); 4292 struct coro *coro = SvSTATE_current;
4293 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2582 4294
2583 sv_setsv (cb, &PL_sv_undef); 4295 block = s_get_cv_croak (block);
2584 4296
2585 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4297 if (!*avp)
2586 coro->saved_deffh = 0;
2587
2588 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2589 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2590 {
2591 SV *old = PL_diehook;
2592 PL_diehook = 0;
2593 SvREFCNT_dec (old);
2594 croak ("\3async_pool terminate\2\n");
2595 }
2596
2597 av_clear (GvAV (PL_defgv));
2598 hv_store (hv, "desc", sizeof ("desc") - 1,
2599 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2600
2601 coro->prio = 0;
2602
2603 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2604 api_trace (aTHX_ coro_current, 0);
2605
2606 av_push (av_async_pool, newSVsv (coro_current));
2607}
2608
2609
2610MODULE = Coro::State PACKAGE = Coro::AIO
2611
2612void
2613_get_state (SV *self)
2614 PROTOTYPE: $
2615 PPCODE:
2616{
2617 AV *defav = GvAV (PL_defgv);
2618 AV *av = newAV (); 4298 *avp = newAV ();
2619 int i;
2620 SV *data_sv = newSV (sizeof (struct io_state));
2621 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2622 SvCUR_set (data_sv, sizeof (struct io_state));
2623 SvPOK_only (data_sv);
2624 4299
2625 data->errorno = errno; 4300 av_push (*avp, SvREFCNT_inc (block));
2626 data->laststype = PL_laststype;
2627 data->laststatval = PL_laststatval;
2628 data->statcache = PL_statcache;
2629 4301
2630 av_extend (av, AvFILLp (defav) + 1 + 1); 4302 if (!ix)
4303 on_enterleave_call (aTHX_ block);
2631 4304
2632 for (i = 0; i <= AvFILLp (defav); ++i) 4305 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2633 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4306 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2634 4307 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2635 av_push (av, data_sv);
2636
2637 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2638
2639 api_ready (aTHX_ self);
2640}
2641
2642void
2643_set_state (SV *state)
2644 PROTOTYPE: $
2645 PPCODE:
2646{
2647 AV *av = (AV *)SvRV (state);
2648 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2649 int i;
2650
2651 errno = data->errorno;
2652 PL_laststype = data->laststype;
2653 PL_laststatval = data->laststatval;
2654 PL_statcache = data->statcache;
2655
2656 EXTEND (SP, AvFILLp (av));
2657 for (i = 0; i < AvFILLp (av); ++i)
2658 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2659}
2660
2661
2662MODULE = Coro::State PACKAGE = Coro::AnyEvent
2663
2664BOOT:
2665 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2666
2667void
2668_schedule (...)
2669 CODE:
2670{
2671 static int incede;
2672
2673 api_cede_notself (aTHX);
2674
2675 ++incede;
2676 while (coro_nready >= incede && api_cede (aTHX))
2677 ;
2678
2679 sv_setsv (sv_activity, &PL_sv_undef);
2680 if (coro_nready >= incede)
2681 {
2682 PUSHMARK (SP);
2683 PUTBACK;
2684 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2685 SPAGAIN;
2686 }
2687
2688 --incede;
2689} 4308}
2690 4309
2691 4310
2692MODULE = Coro::State PACKAGE = PerlIO::cede 4311MODULE = Coro::State PACKAGE = PerlIO::cede
2693 4312
2694BOOT: 4313BOOT:
2695 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4314 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2696 4315
4316
2697MODULE = Coro::State PACKAGE = Coro::Semaphore 4317MODULE = Coro::State PACKAGE = Coro::Semaphore
2698 4318
2699SV * 4319SV *
2700new (SV *klass, SV *count_ = 0) 4320new (SV *klass, SV *count = 0)
2701 CODE: 4321 CODE:
2702{ 4322{
2703 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4323 int semcnt = 1;
2704 AV *av = newAV (); 4324
2705 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4325 if (count)
2706 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4326 {
4327 SvGETMAGIC (count);
4328
4329 if (SvOK (count))
4330 semcnt = SvIV (count);
4331 }
4332
4333 RETVAL = sv_bless (
4334 coro_waitarray_new (aTHX_ semcnt),
4335 GvSTASH (CvGV (cv))
4336 );
2707} 4337}
4338 OUTPUT:
4339 RETVAL
4340
4341# helper for Coro::Channel and others
4342SV *
4343_alloc (int count)
4344 CODE:
4345 RETVAL = coro_waitarray_new (aTHX_ count);
2708 OUTPUT: 4346 OUTPUT:
2709 RETVAL 4347 RETVAL
2710 4348
2711SV * 4349SV *
2712count (SV *self) 4350count (SV *self)
… …
2714 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4352 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2715 OUTPUT: 4353 OUTPUT:
2716 RETVAL 4354 RETVAL
2717 4355
2718void 4356void
2719up (SV *self, int adjust = 1) 4357up (SV *self)
2720 ALIAS:
2721 adjust = 1
2722 CODE: 4358 CODE:
2723 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4359 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
2724 4360
2725void 4361void
2726down (SV *self) 4362adjust (SV *self, int adjust)
4363 CODE:
4364 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4365
4366void
4367down (...)
2727 CODE: 4368 CODE:
2728 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4369 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4370
4371void
4372wait (...)
4373 CODE:
4374 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2729 4375
2730void 4376void
2731try (SV *self) 4377try (SV *self)
2732 PPCODE: 4378 PPCODE:
2733{ 4379{
… …
2745 XSRETURN_NO; 4391 XSRETURN_NO;
2746} 4392}
2747 4393
2748void 4394void
2749waiters (SV *self) 4395waiters (SV *self)
2750 CODE: 4396 PPCODE:
2751{ 4397{
2752 AV *av = (AV *)SvRV (self); 4398 AV *av = (AV *)SvRV (self);
4399 int wcount = AvFILLp (av) + 1 - 1;
2753 4400
2754 if (GIMME_V == G_SCALAR) 4401 if (GIMME_V == G_SCALAR)
2755 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4402 XPUSHs (sv_2mortal (newSViv (wcount)));
2756 else 4403 else
2757 { 4404 {
2758 int i; 4405 int i;
2759 EXTEND (SP, AvFILLp (av) + 1 - 1); 4406 EXTEND (SP, wcount);
2760 for (i = 1; i <= AvFILLp (av); ++i) 4407 for (i = 1; i <= wcount; ++i)
2761 PUSHs (newSVsv (AvARRAY (av)[i])); 4408 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2762 } 4409 }
2763} 4410}
2764 4411
4412MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4413
4414void
4415_may_delete (SV *sem, int count, unsigned int extra_refs)
4416 PPCODE:
4417{
4418 AV *av = (AV *)SvRV (sem);
4419
4420 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4421 && AvFILLp (av) == 0 /* no waiters, just count */
4422 && SvIV (AvARRAY (av)[0]) == count)
4423 XSRETURN_YES;
4424
4425 XSRETURN_NO;
4426}
4427
4428MODULE = Coro::State PACKAGE = Coro::Signal
4429
4430SV *
4431new (SV *klass)
4432 CODE:
4433 RETVAL = sv_bless (
4434 coro_waitarray_new (aTHX_ 0),
4435 GvSTASH (CvGV (cv))
4436 );
4437 OUTPUT:
4438 RETVAL
4439
4440void
4441wait (...)
4442 CODE:
4443 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4444
4445void
4446broadcast (SV *self)
4447 CODE:
4448{
4449 AV *av = (AV *)SvRV (self);
4450 coro_signal_wake (aTHX_ av, AvFILLp (av));
4451}
4452
4453void
4454send (SV *self)
4455 CODE:
4456{
4457 AV *av = (AV *)SvRV (self);
4458
4459 if (AvFILLp (av))
4460 coro_signal_wake (aTHX_ av, 1);
4461 else
4462 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4463}
4464
4465IV
4466awaited (SV *self)
4467 CODE:
4468 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4469 OUTPUT:
4470 RETVAL
4471
4472
4473MODULE = Coro::State PACKAGE = Coro::AnyEvent
4474
4475BOOT:
4476 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4477
4478void
4479_schedule (...)
4480 CODE:
4481{
4482 static int incede;
4483
4484 api_cede_notself (aTHX);
4485
4486 ++incede;
4487 while (coro_nready >= incede && api_cede (aTHX))
4488 ;
4489
4490 sv_setsv (sv_activity, &PL_sv_undef);
4491 if (coro_nready >= incede)
4492 {
4493 PUSHMARK (SP);
4494 PUTBACK;
4495 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4496 }
4497
4498 --incede;
4499}
4500
4501
4502MODULE = Coro::State PACKAGE = Coro::AIO
4503
4504void
4505_register (char *target, char *proto, SV *req)
4506 CODE:
4507{
4508 SV *req_cv = s_get_cv_croak (req);
4509 /* newXSproto doesn't return the CV on 5.8 */
4510 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4511 sv_setpv ((SV *)slf_cv, proto);
4512 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4513}
4514
4515MODULE = Coro::State PACKAGE = Coro::Select
4516
4517void
4518patch_pp_sselect ()
4519 CODE:
4520 if (!coro_old_pp_sselect)
4521 {
4522 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4523 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4524 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4525 }
4526
4527void
4528unpatch_pp_sselect ()
4529 CODE:
4530 if (coro_old_pp_sselect)
4531 {
4532 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4533 coro_old_pp_sselect = 0;
4534 }
4535
4536MODULE = Coro::State PACKAGE = Coro::Util
4537
4538void
4539_exit (int code)
4540 CODE:
4541 _exit (code);
4542
4543NV
4544time ()
4545 CODE:
4546 RETVAL = nvtime (aTHX);
4547 OUTPUT:
4548 RETVAL
4549
4550NV
4551gettimeofday ()
4552 PPCODE:
4553{
4554 UV tv [2];
4555 u2time (aTHX_ tv);
4556 EXTEND (SP, 2);
4557 PUSHs (sv_2mortal (newSVuv (tv [0])));
4558 PUSHs (sv_2mortal (newSVuv (tv [1])));
4559}
4560

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