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Comparing Coro/Coro/State.xs (file contents):
Revision 1.275 by root, Sat Nov 15 06:26:52 2008 UTC vs.
Revision 1.454 by root, Tue Jul 7 00:38:03 2015 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef 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
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 106# if CORO_PTHREAD
152static void *coro_thx; 107static void *coro_thx;
153# endif 108# endif
109#endif
154 110
155#else 111#ifdef __linux
156 112# include <time.h> /* for timespec */
157# define LOCK (void)0 113# include <syscall.h> /* for SYS_* */
158# define UNLOCK (void)0 114# ifdef SYS_clock_gettime
159 115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
116# define CORO_CLOCK_MONOTONIC 1
117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
160#endif 118# endif
161 119#endif
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 120
177static double (*nvtime)(); /* so why doesn't it take void? */ 121static double (*nvtime)(); /* so why doesn't it take void? */
122static void (*u2time)(pTHX_ UV ret[2]);
123
124/* we hijack an hopefully unused CV flag for our purposes */
125#define CVf_SLF 0x4000
126static OP *pp_slf (pTHX);
127static void slf_destroy (pTHX_ struct coro *coro);
178 128
179static U32 cctx_gen; 129static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 130static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 131static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 132static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 133static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 134static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 135static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 136
137static AV *av_destroy; /* destruction queue */
138static SV *sv_manager; /* the manager coro */
139static SV *sv_idle; /* $Coro::idle */
187 140
188static GV *irsgv; /* $/ */ 141static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 142static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 143static SV *rv_diehook;
191static SV *rv_warnhook; 144static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 145static HV *hv_sig; /* %SIG */
193 146
194/* async_pool helper stuff */ 147/* async_pool helper stuff */
195static SV *sv_pool_rss; 148static SV *sv_pool_rss;
196static SV *sv_pool_size; 149static SV *sv_pool_size;
150static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 151static AV *av_async_pool; /* idle pool */
152static SV *sv_Coro; /* class string */
153static CV *cv_pool_handler;
198 154
199/* Coro::AnyEvent */ 155/* Coro::AnyEvent */
200static SV *sv_activity; 156static SV *sv_activity;
201 157
158/* enable processtime/realtime profiling */
159static char enable_times;
160typedef U32 coro_ts[2];
161static coro_ts time_real, time_cpu;
162static char times_valid;
163
202static struct coro_cctx *cctx_first; 164static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 165static int cctx_count, cctx_idle;
204 166
205enum { 167enum
168{
206 CC_MAPPED = 0x01, 169 CC_MAPPED = 0x01,
207 CC_NOREUSE = 0x02, /* throw this away after tracing */ 170 CC_NOREUSE = 0x02, /* throw this away after tracing */
208 CC_TRACE = 0x04, 171 CC_TRACE = 0x04,
209 CC_TRACE_SUB = 0x08, /* trace sub calls */ 172 CC_TRACE_SUB = 0x08, /* trace sub calls */
210 CC_TRACE_LINE = 0x10, /* trace each statement */ 173 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
215typedef struct coro_cctx 178typedef struct coro_cctx
216{ 179{
217 struct coro_cctx *next; 180 struct coro_cctx *next;
218 181
219 /* the stack */ 182 /* the stack */
220 void *sptr; 183 struct coro_stack stack;
221 size_t ssize;
222 184
223 /* cpu state */ 185 /* cpu state */
224 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 186 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
187#ifndef NDEBUG
225 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 188 JMPENV *idle_te; /* same as idle_sp, but for top_env */
189#endif
226 JMPENV *top_env; 190 JMPENV *top_env;
227 coro_context cctx; 191 coro_context cctx;
228 192
229 U32 gen; 193 U32 gen;
230#if CORO_USE_VALGRIND 194#if CORO_USE_VALGRIND
231 int valgrind_id; 195 int valgrind_id;
232#endif 196#endif
233 unsigned char flags; 197 unsigned char flags;
234} coro_cctx; 198} coro_cctx;
235 199
200static coro_cctx *cctx_current; /* the currently running cctx */
201
202/*****************************************************************************/
203
204static MGVTBL coro_state_vtbl;
205
236enum { 206enum
207{
237 CF_RUNNING = 0x0001, /* coroutine is running */ 208 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 209 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 210 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 211 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
212 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
213 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
241}; 214};
242 215
243/* the structure where most of the perl state is stored, overlaid on the cxstack */ 216/* the structure where most of the perl state is stored, overlaid on the cxstack */
244typedef struct 217typedef struct
245{ 218{
246 SV *defsv;
247 AV *defav;
248 SV *errsv;
249 SV *irsgv;
250#define VAR(name,type) type name; 219 #define VARx(name,expr,type) type name;
251# include "state.h" 220 #include "state.h"
252#undef VAR
253} perl_slots; 221} perl_slots;
254 222
223/* how many context stack entries do we need for perl_slots */
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 224#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 225
257/* this is a structure representing a perl-level coroutine */ 226/* this is a structure representing a perl-level coroutine */
258struct coro { 227struct coro
228{
259 /* the C coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 230 coro_cctx *cctx;
261 231
262 /* process data */ 232 /* ready queue */
233 struct coro *next_ready;
234
235 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 236 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 237 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
266 239
240 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 242 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 243 HV *hv; /* the perl hash associated with this coro, if any */
271 244
272 /* statistics */ 245 /* statistics */
273 int usecount; /* number of transfers to this coro */ 246 int usecount; /* number of transfers to this coro */
274 247
275 /* coro process data */ 248 /* coro process data */
276 int prio; 249 int prio;
277 SV *throw; /* exception to be thrown */ 250 SV *except; /* exception to be thrown */
251 SV *rouse_cb; /* last rouse callback */
252 AV *on_destroy; /* callbacks or coros to notify on destroy */
253 AV *status; /* the exit status list */
278 254
279 /* async_pool */ 255 /* async_pool */
280 SV *saved_deffh; 256 SV *saved_deffh;
257 SV *invoke_cb;
258 AV *invoke_av;
259
260 /* on_enter/on_leave */
261 AV *on_enter; AV *on_enter_xs;
262 AV *on_leave; AV *on_leave_xs;
263
264 /* swap_sv */
265 AV *swap_sv;
266
267 /* times */
268 coro_ts t_cpu, t_real;
281 269
282 /* linked list */ 270 /* linked list */
283 struct coro *next, *prev; 271 struct coro *next, *prev;
284}; 272};
285 273
286typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
288 276
277/* the following variables are effectively part of the perl context */
278/* and get copied between struct coro and these variables */
279/* the main reason we don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 280static struct CoroSLF slf_frame; /* the current slf frame */
290 281
291/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
292 283
293#define PRIO_MAX 3 284#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 285#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 286#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 287#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 288#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 289#define CORO_PRIO_MIN -4
299 290
300/* for Coro.pm */ 291/* for Coro.pm */
301static SV *coro_current; 292static SV *coro_current;
302static SV *coro_readyhook; 293static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 294static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
295static CV *cv_coro_run;
304static struct coro *coro_first; 296static struct coro *coro_first;
305#define coro_nready coroapi.nready 297#define coro_nready coroapi.nready
306 298
299/** JIT *********************************************************************/
300
301#if CORO_JIT
302 /* APPLE doesn't have mmap though */
303 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
304 #ifndef CORO_JIT_TYPE
305 #if ECB_AMD64 && CORO_JIT_UNIXY
306 #define CORO_JIT_TYPE "amd64-unix"
307 #elif __i386 && CORO_JIT_UNIXY
308 #define CORO_JIT_TYPE "x86-unix"
309 #endif
310 #endif
311#endif
312
313#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
314 #undef CORO_JIT
315#endif
316
317#if CORO_JIT
318 typedef void (*load_save_perl_slots_type)(perl_slots *);
319 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
320#endif
321
322/** Coro::Select ************************************************************/
323
324static OP *(*coro_old_pp_sselect) (pTHX);
325static SV *coro_select_select;
326
327/* horrible hack, but if it works... */
328static OP *
329coro_pp_sselect (pTHX)
330{
331 dSP;
332 PUSHMARK (SP - 4); /* fake argument list */
333 XPUSHs (coro_select_select);
334 PUTBACK;
335
336 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
337 PL_op->op_flags |= OPf_STACKED;
338 PL_op->op_private = 0;
339 return PL_ppaddr [OP_ENTERSUB](aTHX);
340}
341
342/** time stuff **************************************************************/
343
344#ifdef HAS_GETTIMEOFDAY
345
346ecb_inline void
347coro_u2time (pTHX_ UV ret[2])
348{
349 struct timeval tv;
350 gettimeofday (&tv, 0);
351
352 ret [0] = tv.tv_sec;
353 ret [1] = tv.tv_usec;
354}
355
356ecb_inline double
357coro_nvtime (void)
358{
359 struct timeval tv;
360 gettimeofday (&tv, 0);
361
362 return tv.tv_sec + tv.tv_usec * 1e-6;
363}
364
365ecb_inline void
366time_init (pTHX)
367{
368 nvtime = coro_nvtime;
369 u2time = coro_u2time;
370}
371
372#else
373
374ecb_inline void
375time_init (pTHX)
376{
377 SV **svp;
378
379 require_pv ("Time/HiRes.pm");
380
381 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
382
383 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
384 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
385
386 nvtime = INT2PTR (double (*)(), SvIV (*svp));
387
388 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
389 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
390}
391
392#endif
393
307/** lowlevel stuff **********************************************************/ 394/** lowlevel stuff **********************************************************/
308 395
309static SV * 396static SV * ecb_noinline
310coro_get_sv (pTHX_ const char *name, int create) 397coro_get_sv (pTHX_ const char *name, int create)
311{ 398{
312#if PERL_VERSION_ATLEAST (5,10,0) 399#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 400 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_sv (name, create); 401 get_sv (name, create);
315#endif 402#endif
316 return get_sv (name, create); 403 return get_sv (name, create);
317} 404}
318 405
319static AV * 406static AV * ecb_noinline
320coro_get_av (pTHX_ const char *name, int create) 407coro_get_av (pTHX_ const char *name, int create)
321{ 408{
322#if PERL_VERSION_ATLEAST (5,10,0) 409#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 410 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_av (name, create); 411 get_av (name, create);
325#endif 412#endif
326 return get_av (name, create); 413 return get_av (name, create);
327} 414}
328 415
329static HV * 416static HV * ecb_noinline
330coro_get_hv (pTHX_ const char *name, int create) 417coro_get_hv (pTHX_ const char *name, int create)
331{ 418{
332#if PERL_VERSION_ATLEAST (5,10,0) 419#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 420 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create); 421 get_hv (name, create);
335#endif 422#endif
336 return get_hv (name, create); 423 return get_hv (name, create);
337} 424}
338 425
339static AV * 426ecb_inline void
427coro_times_update (void)
428{
429#ifdef coro_clock_gettime
430 struct timespec ts;
431
432 ts.tv_sec = ts.tv_nsec = 0;
433 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
434 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
435
436 ts.tv_sec = ts.tv_nsec = 0;
437 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
438 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
439#else
440 dTHX;
441 UV tv[2];
442
443 u2time (aTHX_ tv);
444 time_real [0] = tv [0];
445 time_real [1] = tv [1] * 1000;
446#endif
447}
448
449ecb_inline void
450coro_times_add (struct coro *c)
451{
452 c->t_real [1] += time_real [1];
453 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
454 c->t_real [0] += time_real [0];
455
456 c->t_cpu [1] += time_cpu [1];
457 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
458 c->t_cpu [0] += time_cpu [0];
459}
460
461ecb_inline void
462coro_times_sub (struct coro *c)
463{
464 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
465 c->t_real [1] -= time_real [1];
466 c->t_real [0] -= time_real [0];
467
468 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
469 c->t_cpu [1] -= time_cpu [1];
470 c->t_cpu [0] -= time_cpu [0];
471}
472
473/*****************************************************************************/
474/* magic glue */
475
476#define CORO_MAGIC_type_cv 26
477#define CORO_MAGIC_type_state PERL_MAGIC_ext
478
479#define CORO_MAGIC_NN(sv, type) \
480 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
481 ? SvMAGIC (sv) \
482 : mg_find (sv, type))
483
484#define CORO_MAGIC(sv, type) \
485 (ecb_expect_true (SvMAGIC (sv)) \
486 ? CORO_MAGIC_NN (sv, type) \
487 : 0)
488
489#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
490#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
491
492ecb_inline MAGIC *
493SvSTATEhv_p (pTHX_ SV *coro)
494{
495 MAGIC *mg;
496
497 if (ecb_expect_true (
498 SvTYPE (coro) == SVt_PVHV
499 && (mg = CORO_MAGIC_state (coro))
500 && mg->mg_virtual == &coro_state_vtbl
501 ))
502 return mg;
503
504 return 0;
505}
506
507ecb_inline struct coro *
508SvSTATE_ (pTHX_ SV *coro_sv)
509{
510 MAGIC *mg;
511
512 if (SvROK (coro_sv))
513 coro_sv = SvRV (coro_sv);
514
515 mg = SvSTATEhv_p (aTHX_ coro_sv);
516 if (!mg)
517 croak ("Coro::State object required");
518
519 return (struct coro *)mg->mg_ptr;
520}
521
522#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
523
524/* faster than SvSTATE, but expects a coroutine hv */
525#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
526#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
527
528/*****************************************************************************/
529/* padlist management and caching */
530
531ecb_inline PADLIST *
340coro_clone_padlist (pTHX_ CV *cv) 532coro_derive_padlist (pTHX_ CV *cv)
341{ 533{
342 AV *padlist = CvPADLIST (cv); 534 PADLIST *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 535 PADLIST *newpadlist;
536 PADNAMELIST *padnames;
537 PAD *newpad;
538 PADOFFSET off = PadlistMAX (padlist) + 1;
344 539
345 newpadlist = newAV (); 540#if NEWPADAPI
541
542 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
543 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
544 while (!PadlistARRAY (padlist)[off - 1])
545 --off;
546
547 Perl_pad_push (aTHX_ padlist, off);
548
549 newpad = PadlistARRAY (padlist)[off];
550 PadlistARRAY (padlist)[off] = 0;
551
552#else
553
554#if PERL_VERSION_ATLEAST (5,10,0)
555 Perl_pad_push (aTHX_ padlist, off);
556#else
557 Perl_pad_push (aTHX_ padlist, off, 1);
558#endif
559
560 newpad = PadlistARRAY (padlist)[off];
561 PadlistMAX (padlist) = off - 1;
562
563#endif
564
565 newPADLIST (newpadlist);
566#if !PERL_VERSION_ATLEAST(5,15,3)
567 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
346 AvREAL_off (newpadlist); 568 AvREAL_off (newpadlist);
347#if PERL_VERSION_ATLEAST (5,10,0)
348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
349#else
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 569#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist);
354 570
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 571 /* Already extended to 2 elements by newPADLIST. */
356 av_store (newpadlist, 1, (SV *)newpad); 572 PadlistMAX (newpadlist) = 1;
573
574 padnames = PadlistNAMES (padlist);
575 ++PadnamelistREFCNT (padnames);
576 PadlistNAMES (newpadlist) = padnames;
577
578 PadlistARRAY (newpadlist)[1] = newpad;
357 579
358 return newpadlist; 580 return newpadlist;
359} 581}
360 582
361static void 583ecb_inline void
362free_padlist (pTHX_ AV *padlist) 584free_padlist (pTHX_ PADLIST *padlist)
363{ 585{
364 /* may be during global destruction */ 586 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 587 if (!IN_DESTRUCT)
366 { 588 {
367 I32 i = AvFILLp (padlist); 589 I32 i = PadlistMAX (padlist);
368 while (i >= 0) 590
591 while (i > 0) /* special-case index 0 */
369 { 592 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 593 /* we try to be extra-careful here */
594 PAD *pad = PadlistARRAY (padlist)[i--];
595
371 if (svp) 596 if (pad)
372 { 597 {
373 SV *sv; 598 I32 j = PadMAX (pad);
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 599
600 while (j >= 0)
375 SvREFCNT_dec (sv); 601 SvREFCNT_dec (PadARRAY (pad)[j--]);
376 602
603 PadMAX (pad) = -1;
377 SvREFCNT_dec (*svp); 604 SvREFCNT_dec (pad);
378 } 605 }
379 } 606 }
380 607
608 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
609
610#if NEWPADAPI
611 Safefree (PadlistARRAY (padlist));
612 Safefree (padlist);
613#else
614 AvFILLp (padlist) = -1;
615 AvREAL_off (padlist);
381 SvREFCNT_dec ((SV*)padlist); 616 SvREFCNT_dec ((SV*)padlist);
617#endif
382 } 618 }
383} 619}
384 620
385static int 621static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 622coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 623{
388 AV *padlist; 624 PADLIST *padlist;
389 AV *av = (AV *)mg->mg_obj; 625 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
626 size_t len = *(size_t *)mg->mg_ptr;
390 627
391 /* casting is fun. */ 628 /* perl manages to free our internal AV and _then_ call us */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 629 if (IN_DESTRUCT)
630 return 0;
631
632 while (len--)
393 free_padlist (aTHX_ padlist); 633 free_padlist (aTHX_ padlists[len]);
394
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 634
397 return 0; 635 return 0;
398} 636}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 637
403static MGVTBL coro_cv_vtbl = { 638static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 639 0, 0, 0, 0,
405 coro_cv_free 640 coro_cv_free
406}; 641};
407 642
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443
444/* the next two functions merely cache the padlists */ 643/* the next two functions merely cache the padlists */
445static void 644ecb_inline void
446get_padlist (pTHX_ CV *cv) 645get_padlist (pTHX_ CV *cv)
447{ 646{
448 MAGIC *mg = CORO_MAGIC_cv (cv); 647 MAGIC *mg = CORO_MAGIC_cv (cv);
449 AV *av; 648 size_t *lenp;
450 649
451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 650 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 651 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
453 else 652 else
454 { 653 {
455#if CORO_PREFER_PERL_FUNCTIONS 654#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 655 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 656 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 657 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 658 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 659 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 660 SvREFCNT_dec (cp);
462#else 661#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 662 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 663#endif
465 } 664 }
466} 665}
467 666
468static void 667ecb_inline void
469put_padlist (pTHX_ CV *cv) 668put_padlist (pTHX_ CV *cv)
470{ 669{
471 MAGIC *mg = CORO_MAGIC_cv (cv); 670 MAGIC *mg = CORO_MAGIC_cv (cv);
472 AV *av;
473 671
474 if (expect_false (!mg)) 672 if (ecb_expect_false (!mg))
673 {
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 674 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
675 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
676 mg->mg_len = 1; /* so mg_free frees mg_ptr */
677 }
678 else
679 Renew (mg->mg_ptr,
680 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
681 char);
476 682
477 av = (AV *)mg->mg_obj; 683 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
478
479 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1);
481
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 684}
484 685
485/** load & save, init *******************************************************/ 686/** load & save, init *******************************************************/
687
688ecb_inline void
689swap_sv (SV *a, SV *b)
690{
691 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
692 SV tmp;
693
694 /* swap sv_any */
695 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
696
697 /* swap sv_flags */
698 SvFLAGS (&tmp) = SvFLAGS (a);
699 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
700 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
701
702#if PERL_VERSION_ATLEAST (5,10,0)
703 /* perl 5.10 and later complicates this _quite_ a bit, but it also
704 * is much faster, so no quarrels here. alternatively, we could
705 * sv_upgrade to avoid this.
706 */
707 {
708 /* swap sv_u */
709 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
710
711 /* if SvANY points to the head, we need to adjust the pointers,
712 * as the pointer for a still points to b, and maybe vice versa.
713 */
714 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
715 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
716 svany_in_head_set |= 1 << SVt_NV;
717 #endif
718
719 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
720
721 if (svany_in_head (SvTYPE (a)))
722 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
723
724 if (svany_in_head (SvTYPE (b)))
725 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
726 }
727#endif
728}
729
730/* swap sv heads, at least logically */
731static void
732swap_svs (pTHX_ Coro__State c)
733{
734 int i;
735
736 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
737 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
738}
739
740#define SWAP_SVS(coro) \
741 if (ecb_expect_false ((coro)->swap_sv)) \
742 swap_svs (aTHX_ (coro))
743
744static void
745on_enterleave_call (pTHX_ SV *cb);
486 746
487static void 747static void
488load_perl (pTHX_ Coro__State c) 748load_perl (pTHX_ Coro__State c)
489{ 749{
490 perl_slots *slot = c->slot; 750 perl_slots *slot = c->slot;
491 c->slot = 0; 751 c->slot = 0;
492 752
493 PL_mainstack = c->mainstack; 753 PL_mainstack = c->mainstack;
494 754
495 GvSV (PL_defgv) = slot->defsv; 755#if CORO_JIT
496 GvAV (PL_defgv) = slot->defav; 756 load_perl_slots (slot);
497 GvSV (PL_errgv) = slot->errsv; 757#else
498 GvSV (irsgv) = slot->irsgv;
499
500 #define VAR(name,type) PL_ ## name = slot->name; 758 #define VARx(name,expr,type) expr = slot->name;
501 # include "state.h" 759 #include "state.h"
502 #undef VAR 760#endif
503 761
504 { 762 {
505 dSP; 763 dSP;
506 764
507 CV *cv; 765 CV *cv;
508 766
509 /* now do the ugly restore mess */ 767 /* now do the ugly restore mess */
510 while (expect_true (cv = (CV *)POPs)) 768 while (ecb_expect_true (cv = (CV *)POPs))
511 { 769 {
512 put_padlist (aTHX_ cv); /* mark this padlist as available */ 770 put_padlist (aTHX_ cv); /* mark this padlist as available */
513 CvDEPTH (cv) = PTR2IV (POPs); 771 CvDEPTH (cv) = PTR2IV (POPs);
514 CvPADLIST (cv) = (AV *)POPs; 772 CvPADLIST (cv) = (PADLIST *)POPs;
515 } 773 }
516 774
517 PUTBACK; 775 PUTBACK;
518 } 776 }
519 777
520 slf_frame = c->slf_frame; 778 slf_frame = c->slf_frame;
779 CORO_THROW = c->except;
780
781 if (ecb_expect_false (enable_times))
782 {
783 if (ecb_expect_false (!times_valid))
784 coro_times_update ();
785
786 coro_times_sub (c);
787 }
788
789 if (ecb_expect_false (c->on_enter))
790 {
791 int i;
792
793 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
794 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
795 }
796
797 if (ecb_expect_false (c->on_enter_xs))
798 {
799 int i;
800
801 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
802 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
803 }
804
805 SWAP_SVS (c);
521} 806}
522 807
523static void 808static void
524save_perl (pTHX_ Coro__State c) 809save_perl (pTHX_ Coro__State c)
525{ 810{
811 SWAP_SVS (c);
812
813 if (ecb_expect_false (c->on_leave_xs))
814 {
815 int i;
816
817 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
818 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
819 }
820
821 if (ecb_expect_false (c->on_leave))
822 {
823 int i;
824
825 for (i = AvFILLp (c->on_leave); i >= 0; --i)
826 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
827 }
828
829 times_valid = 0;
830
831 if (ecb_expect_false (enable_times))
832 {
833 coro_times_update (); times_valid = 1;
834 coro_times_add (c);
835 }
836
837 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 838 c->slf_frame = slf_frame;
527 839
528 { 840 {
529 dSP; 841 dSP;
530 I32 cxix = cxstack_ix; 842 I32 cxix = cxstack_ix;
… …
538 850
539 XPUSHs (Nullsv); 851 XPUSHs (Nullsv);
540 /* this loop was inspired by pp_caller */ 852 /* this loop was inspired by pp_caller */
541 for (;;) 853 for (;;)
542 { 854 {
543 while (expect_true (cxix >= 0)) 855 while (ecb_expect_true (cxix >= 0))
544 { 856 {
545 PERL_CONTEXT *cx = &ccstk[cxix--]; 857 PERL_CONTEXT *cx = &ccstk[cxix--];
546 858
547 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 859 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
548 { 860 {
549 CV *cv = cx->blk_sub.cv; 861 CV *cv = cx->blk_sub.cv;
550 862
551 if (expect_true (CvDEPTH (cv))) 863 if (ecb_expect_true (CvDEPTH (cv)))
552 { 864 {
553 EXTEND (SP, 3); 865 EXTEND (SP, 3);
554 PUSHs ((SV *)CvPADLIST (cv)); 866 PUSHs ((SV *)CvPADLIST (cv));
555 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 867 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
556 PUSHs ((SV *)cv); 868 PUSHs ((SV *)cv);
… …
559 get_padlist (aTHX_ cv); 871 get_padlist (aTHX_ cv);
560 } 872 }
561 } 873 }
562 } 874 }
563 875
564 if (expect_true (top_si->si_type == PERLSI_MAIN)) 876 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
565 break; 877 break;
566 878
567 top_si = top_si->si_prev; 879 top_si = top_si->si_prev;
568 ccstk = top_si->si_cxstack; 880 ccstk = top_si->si_cxstack;
569 cxix = top_si->si_cxix; 881 cxix = top_si->si_cxix;
… …
571 883
572 PUTBACK; 884 PUTBACK;
573 } 885 }
574 886
575 /* allocate some space on the context stack for our purposes */ 887 /* allocate some space on the context stack for our purposes */
576 /* we manually unroll here, as usually 2 slots is enough */ 888 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
577 if (SLOT_COUNT >= 1) CXINC;
578 if (SLOT_COUNT >= 2) CXINC;
579 if (SLOT_COUNT >= 3) CXINC;
580 { 889 {
581 int i; 890 unsigned int i;
891
582 for (i = 3; i < SLOT_COUNT; ++i) 892 for (i = 0; i < SLOT_COUNT; ++i)
583 CXINC; 893 CXINC;
584 } 894
585 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 895 cxstack_ix -= SLOT_COUNT; /* undo allocation */
896 }
586 897
587 c->mainstack = PL_mainstack; 898 c->mainstack = PL_mainstack;
588 899
589 { 900 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 901 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 902
592 slot->defav = GvAV (PL_defgv); 903#if CORO_JIT
593 slot->defsv = DEFSV; 904 save_perl_slots (slot);
594 slot->errsv = ERRSV; 905#else
595 slot->irsgv = GvSV (irsgv);
596
597 #define VAR(name,type) slot->name = PL_ ## name; 906 #define VARx(name,expr,type) slot->name = expr;
598 # include "state.h" 907 #include "state.h"
599 #undef VAR 908#endif
600 } 909 }
601} 910}
602 911
603/* 912/*
604 * allocate various perl stacks. This is almost an exact copy 913 * allocate various perl stacks. This is almost an exact copy
605 * of perl.c:init_stacks, except that it uses less memory 914 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 915 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 916 * not usually need a lot of stackspace.
608 */ 917 */
609#if CORO_PREFER_PERL_FUNCTIONS 918#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 919# define coro_init_stacks(thx) init_stacks ()
611#else 920#else
612static void 921static void
613coro_init_stacks (pTHX) 922coro_init_stacks (pTHX)
614{ 923{
615 PL_curstackinfo = new_stackinfo(32, 8); 924 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
616 PL_curstackinfo->si_type = PERLSI_MAIN; 925 PL_curstackinfo->si_type = PERLSI_MAIN;
617 PL_curstack = PL_curstackinfo->si_stack; 926 PL_curstack = PL_curstackinfo->si_stack;
618 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 927 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
619 928
620 PL_stack_base = AvARRAY(PL_curstack); 929 PL_stack_base = AvARRAY(PL_curstack);
… …
635#endif 944#endif
636 945
637 New(54,PL_scopestack,8,I32); 946 New(54,PL_scopestack,8,I32);
638 PL_scopestack_ix = 0; 947 PL_scopestack_ix = 0;
639 PL_scopestack_max = 8; 948 PL_scopestack_max = 8;
949#if HAS_SCOPESTACK_NAME
950 New(54,PL_scopestack_name,8,const char*);
951#endif
640 952
641 New(54,PL_savestack,24,ANY); 953 New(54,PL_savestack,24,ANY);
642 PL_savestack_ix = 0; 954 PL_savestack_ix = 0;
643 PL_savestack_max = 24; 955 PL_savestack_max = 24;
644 956
… …
672 } 984 }
673 985
674 Safefree (PL_tmps_stack); 986 Safefree (PL_tmps_stack);
675 Safefree (PL_markstack); 987 Safefree (PL_markstack);
676 Safefree (PL_scopestack); 988 Safefree (PL_scopestack);
989#if HAS_SCOPESTACK_NAME
990 Safefree (PL_scopestack_name);
991#endif
677 Safefree (PL_savestack); 992 Safefree (PL_savestack);
678#if !PERL_VERSION_ATLEAST (5,10,0) 993#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 994 Safefree (PL_retstack);
680#endif 995#endif
681} 996}
682 997
998#define CORO_RSS \
999 rss += sizeof (SYM (curstackinfo)); \
1000 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
1001 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
1002 rss += SYM (tmps_max) * sizeof (SV *); \
1003 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
1004 rss += SYM (scopestack_max) * sizeof (I32); \
1005 rss += SYM (savestack_max) * sizeof (ANY);
1006
683static size_t 1007static size_t
684coro_rss (pTHX_ struct coro *coro) 1008coro_rss (pTHX_ struct coro *coro)
685{ 1009{
686 size_t rss = sizeof (*coro); 1010 size_t rss = sizeof (*coro);
687 1011
688 if (coro->mainstack) 1012 if (coro->mainstack)
689 { 1013 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 1014 if (coro->flags & CF_RUNNING)
694 { 1015 {
695 slot = &tmp_slot; 1016 #define SYM(sym) PL_ ## sym
696 1017 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 1018 #undef SYM
700 } 1019 }
701 else 1020 else
702 slot = coro->slot;
703
704 if (slot)
705 { 1021 {
706 rss += sizeof (slot->curstackinfo); 1022 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1023 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1024 #undef SYM
709 rss += slot->tmps_max * sizeof (SV *);
710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
711 rss += slot->scopestack_max * sizeof (I32);
712 rss += slot->savestack_max * sizeof (ANY);
713
714#if !PERL_VERSION_ATLEAST (5,10,0)
715 rss += slot->retstack_max * sizeof (OP *);
716#endif
717 } 1025 }
718 } 1026 }
719 1027
720 return rss; 1028 return rss;
721} 1029}
… …
734#endif 1042#endif
735 1043
736/* 1044/*
737 * This overrides the default magic get method of %SIG elements. 1045 * This overrides the default magic get method of %SIG elements.
738 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1046 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
739 * and instead of tryign to save and restore the hash elements, we just provide 1047 * and instead of trying to save and restore the hash elements (extremely slow),
740 * readback here. 1048 * we just provide our own readback here.
741 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
742 * not expecting this to actually change the hook. This is a potential problem
743 * when a schedule happens then, but we ignore this.
744 */ 1049 */
745static int 1050static int ecb_cold
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1051coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 1052{
748 const char *s = MgPV_nolen_const (mg); 1053 const char *s = MgPV_nolen_const (mg);
749 1054
750 if (*s == '_') 1055 if (*s == '_')
751 { 1056 {
752 SV **svp = 0; 1057 SV **svp = 0;
753 1058
754 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1059 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
755 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1060 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
756 1061
757 if (svp) 1062 if (svp)
758 { 1063 {
759 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1064 SV *ssv;
1065
1066 if (!*svp)
1067 ssv = &PL_sv_undef;
1068 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1069 ssv = sv_2mortal (newRV_inc (*svp));
1070 else
1071 ssv = *svp;
1072
1073 sv_setsv (sv, ssv);
760 return 0; 1074 return 0;
761 } 1075 }
762 } 1076 }
763 1077
764 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1078 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
765} 1079}
766 1080
767static int 1081static int ecb_cold
768coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1082coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
769{ 1083{
770 const char *s = MgPV_nolen_const (mg); 1084 const char *s = MgPV_nolen_const (mg);
771 1085
772 if (*s == '_') 1086 if (*s == '_')
… …
786 } 1100 }
787 1101
788 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1102 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
789} 1103}
790 1104
791static int 1105static int ecb_cold
792coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1106coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
793{ 1107{
794 const char *s = MgPV_nolen_const (mg); 1108 const char *s = MgPV_nolen_const (mg);
795 1109
796 if (*s == '_') 1110 if (*s == '_')
… …
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1115 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802 1116
803 if (svp) 1117 if (svp)
804 { 1118 {
805 SV *old = *svp; 1119 SV *old = *svp;
806 *svp = newSVsv (sv); 1120 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 1121 SvREFCNT_dec (old);
808 return 0; 1122 return 0;
809 } 1123 }
810 } 1124 }
811 1125
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 1126 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813} 1127}
814 1128
815static void 1129static void
816prepare_nop (aTHX_ struct coro_transfer_args *ta) 1130prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{ 1131{
818 /* kind of mega-hacky, but works */ 1132 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta; 1133 ta->next = ta->prev = (struct coro *)ta;
820} 1134}
821 1135
822static int 1136static int
823slf_check_nop (aTHX) 1137slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 1138{
825 return 0; 1139 return 0;
826} 1140}
827 1141
828static void 1142static int
1143slf_check_repeat (pTHX_ struct CoroSLF *frame)
1144{
1145 return 1;
1146}
1147
1148static UNOP init_perl_op;
1149
1150ecb_noinline static void /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 1151init_perl (pTHX_ struct coro *coro)
830{ 1152{
831 /* 1153 /*
832 * emulate part of the perl startup here. 1154 * emulate part of the perl startup here.
833 */ 1155 */
834 coro_init_stacks (aTHX); 1156 coro_init_stacks (aTHX);
835 1157
836 PL_runops = RUNOPS_DEFAULT; 1158 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 1159 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 1160 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 1161 PL_comppad = 0;
1162 PL_comppad_name = 0;
1163 PL_comppad_name_fill = 0;
1164 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 1165 PL_curpm = 0;
841 PL_curpad = 0; 1166 PL_curpad = 0;
842 PL_localizing = 0; 1167 PL_localizing = 0;
843 PL_dirty = 0;
844 PL_restartop = 0; 1168 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 1169#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 1170 PL_parser = 0;
847#endif 1171#endif
1172 PL_hints = 0;
848 1173
849 /* recreate the die/warn hooks */ 1174 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1175 PL_diehook = SvREFCNT_inc (rv_diehook);
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1176 PL_warnhook = SvREFCNT_inc (rv_warnhook);
852 1177
853 GvSV (PL_defgv) = newSV (0); 1178 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 1179 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 1180 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1181 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1182 GvHV (PL_hintgv) = newHV ();
1183#if PERL_VERSION_ATLEAST (5,10,0)
1184 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1185#endif
857 PL_rs = newSVsv (GvSV (irsgv)); 1186 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1187 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 1188
860 { 1189 {
861 dSP; 1190 dSP;
862 UNOP myop; 1191 UNOP myop;
863 1192
864 Zero (&myop, 1, UNOP); 1193 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 1194 myop.op_next = Nullop;
1195 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 1196 myop.op_flags = OPf_WANT_VOID;
867 1197
868 PUSHMARK (SP); 1198 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1199 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 1200 PUTBACK;
871 PL_op = (OP *)&myop; 1201 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1202 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 1203 }
875 1204
876 /* this newly created coroutine might be run on an existing cctx which most 1205 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1206 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 1207 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1208 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1209 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881} 1210 slf_frame.destroy = 0;
882 1211
1212 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1213 init_perl_op.op_next = PL_op;
1214 init_perl_op.op_type = OP_ENTERSUB;
1215 init_perl_op.op_ppaddr = pp_slf;
1216 /* no flags etc. required, as an init function won't be called */
1217
1218 PL_op = (OP *)&init_perl_op;
1219
1220 /* copy throw, in case it was set before init_perl */
1221 CORO_THROW = coro->except;
1222
1223 SWAP_SVS (coro);
1224
1225 if (ecb_expect_false (enable_times))
1226 {
1227 coro_times_update ();
1228 coro_times_sub (coro);
1229 }
1230}
1231
883static void 1232static void
884coro_destruct (pTHX_ struct coro *coro) 1233coro_unwind_stacks (pTHX)
885{ 1234{
886 if (!IN_DESTRUCT) 1235 if (!IN_DESTRUCT)
887 { 1236 {
888 /* restore all saved variables and stuff */ 1237 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 1238 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 1246 POPSTACK_TO (PL_mainstack);
898 1247
899 /* unwind main stack */ 1248 /* unwind main stack */
900 dounwind (-1); 1249 dounwind (-1);
901 } 1250 }
1251}
902 1252
903 SvREFCNT_dec (GvSV (PL_defgv)); 1253static void
904 SvREFCNT_dec (GvAV (PL_defgv)); 1254destroy_perl (pTHX_ struct coro *coro)
905 SvREFCNT_dec (GvSV (PL_errgv)); 1255{
906 SvREFCNT_dec (PL_defoutgv); 1256 SV *svf [9];
907 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv));
909 1257
910 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook);
912 1258 {
1259 SV *old_current = SvRV (coro_current);
1260 struct coro *current = SvSTATE (old_current);
1261
1262 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1263
1264 save_perl (aTHX_ current);
1265
1266 /* this will cause transfer_check to croak on block*/
1267 SvRV_set (coro_current, (SV *)coro->hv);
1268
1269 load_perl (aTHX_ coro);
1270
1271 coro_unwind_stacks (aTHX);
1272
1273 /* restore swapped sv's */
1274 SWAP_SVS (coro);
1275
1276 coro_destruct_stacks (aTHX);
1277
1278 /* now save some sv's to be free'd later */
1279 svf [0] = GvSV (PL_defgv);
1280 svf [1] = (SV *)GvAV (PL_defgv);
1281 svf [2] = GvSV (PL_errgv);
1282 svf [3] = (SV *)PL_defoutgv;
1283 svf [4] = PL_rs;
1284 svf [5] = GvSV (irsgv);
1285 svf [6] = (SV *)GvHV (PL_hintgv);
1286 svf [7] = PL_diehook;
1287 svf [8] = PL_warnhook;
1288 assert (9 == sizeof (svf) / sizeof (*svf));
1289
1290 SvRV_set (coro_current, old_current);
1291
1292 load_perl (aTHX_ current);
1293 }
1294
1295 {
1296 unsigned int i;
1297
1298 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1299 SvREFCNT_dec (svf [i]);
1300
913 SvREFCNT_dec (coro->saved_deffh); 1301 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1302 SvREFCNT_dec (coro->rouse_cb);
915 1303 SvREFCNT_dec (coro->invoke_cb);
916 coro_destruct_stacks (aTHX); 1304 SvREFCNT_dec (coro->invoke_av);
1305 SvREFCNT_dec (coro->on_enter_xs);
1306 SvREFCNT_dec (coro->on_leave_xs);
1307 }
917} 1308}
918 1309
919INLINE void 1310ecb_inline void
920free_coro_mortal (pTHX) 1311free_coro_mortal (pTHX)
921{ 1312{
922 if (expect_true (coro_mortal)) 1313 if (ecb_expect_true (coro_mortal))
923 { 1314 {
924 SvREFCNT_dec (coro_mortal); 1315 SvREFCNT_dec ((SV *)coro_mortal);
925 coro_mortal = 0; 1316 coro_mortal = 0;
926 } 1317 }
927} 1318}
928 1319
929static int 1320static int
930runops_trace (pTHX) 1321runops_trace (pTHX)
931{ 1322{
932 COP *oldcop = 0; 1323 COP *oldcop = 0;
933 int oldcxix = -2; 1324 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1325
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1326 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1327 {
939 PERL_ASYNC_CHECK (); 1328 PERL_ASYNC_CHECK ();
940 1329
941 if (cctx->flags & CC_TRACE_ALL) 1330 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1331 {
943 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1332 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
944 { 1333 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1334 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1335 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1336 AV *av = newAV (); /* return values */
948 SV **cb; 1337 SV **cb;
… …
985 1374
986 if (PL_curcop != &PL_compiling) 1375 if (PL_curcop != &PL_compiling)
987 { 1376 {
988 SV **cb; 1377 SV **cb;
989 1378
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1379 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
991 { 1380 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1381 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1382
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1383 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1384 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1385 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1386 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1387 SV *fullname = sv_2mortal (newSV (0));
1000 1388
1001 if (isGV (gv)) 1389 if (isGV (gv))
… …
1006 SAVETMPS; 1394 SAVETMPS;
1007 EXTEND (SP, 3); 1395 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1396 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1397 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1398 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1399 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1400 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1401 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1014 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1402 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1403 SPAGAIN;
1016 FREETMPS; 1404 FREETMPS;
… …
1019 } 1407 }
1020 1408
1021 oldcxix = cxstack_ix; 1409 oldcxix = cxstack_ix;
1022 } 1410 }
1023 1411
1024 if (cctx->flags & CC_TRACE_LINE) 1412 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1413 {
1026 dSP; 1414 dSP;
1027 1415
1028 PL_runops = RUNOPS_DEFAULT; 1416 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1417 ENTER;
… …
1048 1436
1049 TAINT_NOT; 1437 TAINT_NOT;
1050 return 0; 1438 return 0;
1051} 1439}
1052 1440
1441static struct CoroSLF cctx_ssl_frame;
1442
1053static void 1443static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1444slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1445{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1446 ta->prev = 0;
1058} 1447}
1059 1448
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1449static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1450slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */
1063/* also initialises PL_top_env */
1064static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx)
1066{ 1451{
1067 dSP; 1452 *frame = cctx_ssl_frame;
1068 UNOP myop;
1069 1453
1454 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1455}
1456
1457/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1458static void ecb_noinline
1459cctx_prepare (pTHX)
1460{
1070 PL_top_env = &PL_start_env; 1461 PL_top_env = &PL_start_env;
1071 1462
1072 if (cctx->flags & CC_TRACE) 1463 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1464 PL_runops = runops_trace;
1074 1465
1075 Zero (&myop, 1, UNOP); 1466 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1467 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1468 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1469 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1470
1079 PUSHMARK (SP); 1471 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1472 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1473
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1474 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1475 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1476}
1088 1477
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1478/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1479ecb_inline void
1091transfer_tail (pTHX) 1480transfer_tail (pTHX)
1092{ 1481{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX); 1482 free_coro_mortal (aTHX);
1098 UNLOCK; 1483}
1099 1484
1100 if (expect_false (next->throw)) 1485/* try to exit the same way perl's main function would do */
1101 { 1486/* we do not bother resetting the environment or other things *7
1102 SV *exception = sv_2mortal (next->throw); 1487/* that are not, uhm, essential */
1103 1488/* this obviously also doesn't work when perl is embedded */
1104 next->throw = 0; 1489static void ecb_noinline ecb_cold
1105 sv_setsv (ERRSV, exception); 1490perlish_exit (pTHX)
1106 croak (0); 1491{
1107 } 1492 int exitstatus = perl_destruct (PL_curinterp);
1493 perl_free (PL_curinterp);
1494 exit (exitstatus);
1108} 1495}
1109 1496
1110/* 1497/*
1111 * this is a _very_ stripped down perl interpreter ;) 1498 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1499 */
… …
1124 /* normally we would need to skip the entersub here */ 1511 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1512 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1513 /* PL_nop = PL_nop->op_next */
1127 1514
1128 /* inject a fake subroutine call to cctx_init */ 1515 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1516 cctx_prepare (aTHX);
1130 1517
1131 /* cctx_run is the alternative tail of transfer() */ 1518 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1519 transfer_tail (aTHX);
1134 1520
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1521 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1522 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1523 perl_run (PL_curinterp);
1524 /*
1525 * Unfortunately, there is no way to get at the return values of the
1526 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1527 * runtime errors here, as this is just a random interpreter, not a thread.
1528 */
1138 1529
1139 /* 1530 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1531 * If perl-run returns we assume exit() was being called or the coro
1141 * fell off the end, which seems to be the only valid (non-bug) 1532 * fell off the end, which seems to be the only valid (non-bug)
1142 * reason for perl_run to return. We try to exit by jumping to the 1533 * reason for perl_run to return. We try to mimic whatever perl is normally
1143 * bootstrap-time "top" top_env, as we cannot restore the "main" 1534 * doing in that case. YMMV.
1144 * coroutine as Coro has no such concept
1145 */ 1535 */
1146 PL_top_env = main_top_env; 1536 perlish_exit (aTHX);
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1537 }
1149} 1538}
1150 1539
1151static coro_cctx * 1540static coro_cctx *
1152cctx_new () 1541cctx_new (void)
1153{ 1542{
1154 coro_cctx *cctx; 1543 coro_cctx *cctx;
1155 1544
1156 ++cctx_count; 1545 ++cctx_count;
1157 New (0, cctx, 1, coro_cctx); 1546 New (0, cctx, 1, coro_cctx);
… …
1163 return cctx; 1552 return cctx;
1164} 1553}
1165 1554
1166/* create a new cctx only suitable as source */ 1555/* create a new cctx only suitable as source */
1167static coro_cctx * 1556static coro_cctx *
1168cctx_new_empty () 1557cctx_new_empty (void)
1169{ 1558{
1170 coro_cctx *cctx = cctx_new (); 1559 coro_cctx *cctx = cctx_new ();
1171 1560
1172 cctx->sptr = 0; 1561 cctx->stack.sptr = 0;
1173 coro_create (&cctx->cctx, 0, 0, 0, 0); 1562 coro_create (&cctx->cctx, 0, 0, 0, 0);
1174 1563
1175 return cctx; 1564 return cctx;
1176} 1565}
1177 1566
1178/* create a new cctx suitable as destination/running a perl interpreter */ 1567/* create a new cctx suitable as destination/running a perl interpreter */
1179static coro_cctx * 1568static coro_cctx *
1180cctx_new_run () 1569cctx_new_run (void)
1181{ 1570{
1182 coro_cctx *cctx = cctx_new (); 1571 coro_cctx *cctx = cctx_new ();
1183 void *stack_start;
1184 size_t stack_size;
1185 1572
1186#if HAVE_MMAP 1573 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1187 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1188 /* mmap supposedly does allocate-on-write for us */
1189 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1190
1191 if (cctx->sptr != (void *)-1)
1192 {
1193 #if CORO_STACKGUARD
1194 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1195 #endif
1196 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1197 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1198 cctx->flags |= CC_MAPPED;
1199 } 1574 {
1200 else
1201#endif
1202 {
1203 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1204 New (0, cctx->sptr, cctx_stacksize, long);
1205
1206 if (!cctx->sptr)
1207 {
1208 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1575 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1209 _exit (EXIT_FAILURE); 1576 _exit (EXIT_FAILURE);
1210 }
1211
1212 stack_start = cctx->sptr;
1213 stack_size = cctx->ssize;
1214 } 1577 }
1215 1578
1216 #if CORO_USE_VALGRIND
1217 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1218 #endif
1219
1220 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1579 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1221 1580
1222 return cctx; 1581 return cctx;
1223} 1582}
1224 1583
1225static void 1584static void
1226cctx_destroy (coro_cctx *cctx) 1585cctx_destroy (coro_cctx *cctx)
1227{ 1586{
1228 if (!cctx) 1587 if (!cctx)
1229 return; 1588 return;
1230 1589
1590 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1591
1231 --cctx_count; 1592 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1593 coro_destroy (&cctx->cctx);
1233 1594
1234 /* coro_transfer creates new, empty cctx's */ 1595 coro_stack_free (&cctx->stack);
1235 if (cctx->sptr)
1236 {
1237 #if CORO_USE_VALGRIND
1238 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1239 #endif
1240
1241#if HAVE_MMAP
1242 if (cctx->flags & CC_MAPPED)
1243 munmap (cctx->sptr, cctx->ssize);
1244 else
1245#endif
1246 Safefree (cctx->sptr);
1247 }
1248 1596
1249 Safefree (cctx); 1597 Safefree (cctx);
1250} 1598}
1251 1599
1252/* wether this cctx should be destructed */ 1600/* wether this cctx should be destructed */
1253#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1601#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1254 1602
1255static coro_cctx * 1603static coro_cctx *
1256cctx_get (pTHX) 1604cctx_get (pTHX)
1257{ 1605{
1258 while (expect_true (cctx_first)) 1606 while (ecb_expect_true (cctx_first))
1259 { 1607 {
1260 coro_cctx *cctx = cctx_first; 1608 coro_cctx *cctx = cctx_first;
1261 cctx_first = cctx->next; 1609 cctx_first = cctx->next;
1262 --cctx_idle; 1610 --cctx_idle;
1263 1611
1264 if (expect_true (!CCTX_EXPIRED (cctx))) 1612 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1265 return cctx; 1613 return cctx;
1266 1614
1267 cctx_destroy (cctx); 1615 cctx_destroy (cctx);
1268 } 1616 }
1269 1617
… …
1271} 1619}
1272 1620
1273static void 1621static void
1274cctx_put (coro_cctx *cctx) 1622cctx_put (coro_cctx *cctx)
1275{ 1623{
1276 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1624 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1277 1625
1278 /* free another cctx if overlimit */ 1626 /* free another cctx if overlimit */
1279 if (expect_false (cctx_idle >= cctx_max_idle)) 1627 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1280 { 1628 {
1281 coro_cctx *first = cctx_first; 1629 coro_cctx *first = cctx_first;
1282 cctx_first = first->next; 1630 cctx_first = first->next;
1283 --cctx_idle; 1631 --cctx_idle;
1284 1632
… …
1293/** coroutine switching *****************************************************/ 1641/** coroutine switching *****************************************************/
1294 1642
1295static void 1643static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1644transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1645{
1646 /* TODO: throwing up here is considered harmful */
1647
1298 if (expect_true (prev != next)) 1648 if (ecb_expect_true (prev != next))
1299 { 1649 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1650 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1651 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1302 1652
1303 if (expect_false (next->flags & CF_RUNNING)) 1653 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1304 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1305
1306 if (expect_false (next->flags & CF_DESTROYED))
1307 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1654 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1308 1655
1309#if !PERL_VERSION_ATLEAST (5,10,0) 1656#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1657 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1311 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1658 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1312#endif 1659#endif
1313 } 1660 }
1314} 1661}
1315 1662
1316/* always use the TRANSFER macro */ 1663/* always use the TRANSFER macro */
1317static void NOINLINE 1664static void ecb_noinline /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1665transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1666{
1320 dSTACKLEVEL; 1667 dSTACKLEVEL;
1321 1668
1322 /* sometimes transfer is only called to set idle_sp */ 1669 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1670 if (ecb_expect_false (!prev))
1324 { 1671 {
1325 ((coro_cctx *)prev)->idle_sp = stacklevel; 1672 cctx_current->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1673 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1674 }
1328 else if (expect_true (prev != next)) 1675 else if (ecb_expect_true (prev != next))
1329 { 1676 {
1330 coro_cctx *prev__cctx; 1677 coro_cctx *cctx_prev;
1331 1678
1332 if (expect_false (prev->flags & CF_NEW)) 1679 if (ecb_expect_false (prev->flags & CF_NEW))
1333 { 1680 {
1334 /* create a new empty/source context */ 1681 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1682 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1683 prev->flags |= CF_RUNNING;
1338 } 1684 }
1339 1685
1340 prev->flags &= ~CF_RUNNING; 1686 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1687 next->flags |= CF_RUNNING;
1342 1688
1343 LOCK;
1344
1345 /* first get rid of the old state */ 1689 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1690 save_perl (aTHX_ prev);
1347 1691
1348 if (expect_false (next->flags & CF_NEW)) 1692 if (ecb_expect_false (next->flags & CF_NEW))
1349 { 1693 {
1350 /* need to start coroutine */ 1694 /* need to start coroutine */
1351 next->flags &= ~CF_NEW; 1695 next->flags &= ~CF_NEW;
1352 /* setup coroutine call */ 1696 /* setup coroutine call */
1353 coro_setup (aTHX_ next); 1697 init_perl (aTHX_ next);
1354 } 1698 }
1355 else 1699 else
1356 load_perl (aTHX_ next); 1700 load_perl (aTHX_ next);
1357 1701
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1702 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1703 if (ecb_expect_true (
1362 prev__cctx->idle_sp == stacklevel 1704 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1705 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1706 && !force_cctx
1365 )) 1707 ))
1366 { 1708 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1709 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1368 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1710 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1369 1711
1370 prev->cctx = 0;
1371
1372 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1712 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1373 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1713 /* without this the next cctx_get might destroy the running cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1714 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1715 if (ecb_expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1716 next->cctx = cctx_get (aTHX);
1377 1717
1378 cctx_put (prev__cctx); 1718 cctx_put (cctx_current);
1379 } 1719 }
1720 else
1721 prev->cctx = cctx_current;
1380 1722
1381 ++next->usecount; 1723 ++next->usecount;
1382 1724
1383 if (expect_true (!next->cctx)) 1725 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1726 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1727
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1728 next->cctx = 0;
1387 transfer_next = next;
1388 1729
1389 if (expect_false (prev__cctx != next->cctx)) 1730 if (ecb_expect_false (cctx_prev != cctx_current))
1390 { 1731 {
1391 prev__cctx->top_env = PL_top_env; 1732 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1733 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1734 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1735 }
1395 1736
1396 transfer_tail (aTHX); 1737 transfer_tail (aTHX);
1397 } 1738 }
1398} 1739}
… …
1400#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1741#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1401#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1742#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1402 1743
1403/** high level stuff ********************************************************/ 1744/** high level stuff ********************************************************/
1404 1745
1746/* this function is actually Coro, not Coro::State, but we call it from here */
1747/* because it is convenient - but it hasn't been declared yet for that reason */
1405static int 1748static void
1749coro_call_on_destroy (pTHX_ struct coro *coro);
1750
1751static void
1406coro_state_destroy (pTHX_ struct coro *coro) 1752coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1753{
1408 if (coro->flags & CF_DESTROYED) 1754 if (coro->flags & CF_ZOMBIE)
1409 return 0; 1755 return;
1410 1756
1757 slf_destroy (aTHX_ coro);
1758
1411 coro->flags |= CF_DESTROYED; 1759 coro->flags |= CF_ZOMBIE;
1412 1760
1413 if (coro->flags & CF_READY) 1761 if (coro->flags & CF_READY)
1414 { 1762 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1763 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1764 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1765 --coro_nready;
1419 UNLOCK;
1420 } 1766 }
1421 else 1767 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1768 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423
1424 if (coro->mainstack && coro->mainstack != main_mainstack)
1425 {
1426 struct coro temp;
1427
1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1429
1430 save_perl (aTHX_ &temp);
1431 load_perl (aTHX_ coro);
1432
1433 coro_destruct (aTHX_ coro);
1434
1435 load_perl (aTHX_ &temp);
1436
1437 coro->slot = 0;
1438 }
1439
1440 cctx_destroy (coro->cctx);
1441 SvREFCNT_dec (coro->args);
1442 1769
1443 if (coro->next) coro->next->prev = coro->prev; 1770 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1771 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1772 if (coro == coro_first) coro_first = coro->next;
1446 1773
1447 return 1; 1774 if (coro->mainstack
1775 && coro->mainstack != main_mainstack
1776 && coro->slot
1777 && !PL_dirty)
1778 destroy_perl (aTHX_ coro);
1779
1780 cctx_destroy (coro->cctx);
1781 SvREFCNT_dec (coro->startcv);
1782 SvREFCNT_dec (coro->args);
1783 SvREFCNT_dec (coro->swap_sv);
1784 SvREFCNT_dec (CORO_THROW);
1785
1786 coro_call_on_destroy (aTHX_ coro);
1787
1788 /* more destruction mayhem in coro_state_free */
1448} 1789}
1449 1790
1450static int 1791static int
1451coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1792coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1452{ 1793{
1453 struct coro *coro = (struct coro *)mg->mg_ptr; 1794 struct coro *coro = (struct coro *)mg->mg_ptr;
1454 mg->mg_ptr = 0; 1795 mg->mg_ptr = 0;
1455 1796
1456 coro->hv = 0;
1457
1458 if (--coro->refcnt < 0)
1459 {
1460 coro_state_destroy (aTHX_ coro); 1797 coro_state_destroy (aTHX_ coro);
1798 SvREFCNT_dec (coro->on_destroy);
1799 SvREFCNT_dec (coro->status);
1800
1461 Safefree (coro); 1801 Safefree (coro);
1462 }
1463 1802
1464 return 0; 1803 return 0;
1465} 1804}
1466 1805
1467static int 1806static int ecb_cold
1468coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1807coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1469{ 1808{
1470 struct coro *coro = (struct coro *)mg->mg_ptr; 1809 /* called when perl clones the current process the slow way (windows process emulation) */
1471 1810 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1472 ++coro->refcnt; 1811 mg->mg_ptr = 0;
1812 mg->mg_virtual = 0;
1473 1813
1474 return 0; 1814 return 0;
1475} 1815}
1476 1816
1477static MGVTBL coro_state_vtbl = { 1817static MGVTBL coro_state_vtbl = {
… …
1502 TRANSFER (ta, 1); 1842 TRANSFER (ta, 1);
1503} 1843}
1504 1844
1505/** Coro ********************************************************************/ 1845/** Coro ********************************************************************/
1506 1846
1507static void 1847ecb_inline void
1508coro_enq (pTHX_ SV *coro_sv) 1848coro_enq (pTHX_ struct coro *coro)
1509{ 1849{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1850 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1511}
1512 1851
1513static SV * 1852 SvREFCNT_inc_NN (coro->hv);
1853
1854 coro->next_ready = 0;
1855 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1856 ready [1] = coro;
1857}
1858
1859ecb_inline struct coro *
1514coro_deq (pTHX) 1860coro_deq (pTHX)
1515{ 1861{
1516 int prio; 1862 int prio;
1517 1863
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1864 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1519 if (AvFILLp (coro_ready [prio]) >= 0) 1865 {
1520 return av_shift (coro_ready [prio]); 1866 struct coro **ready = coro_ready [prio];
1867
1868 if (ready [0])
1869 {
1870 struct coro *coro = ready [0];
1871 ready [0] = coro->next_ready;
1872 return coro;
1873 }
1874 }
1521 1875
1522 return 0; 1876 return 0;
1877}
1878
1879static void
1880invoke_sv_ready_hook_helper (void)
1881{
1882 dTHX;
1883 dSP;
1884
1885 ENTER;
1886 SAVETMPS;
1887
1888 PUSHMARK (SP);
1889 PUTBACK;
1890 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1891
1892 FREETMPS;
1893 LEAVE;
1523} 1894}
1524 1895
1525static int 1896static int
1526api_ready (pTHX_ SV *coro_sv) 1897api_ready (pTHX_ SV *coro_sv)
1527{ 1898{
1528 struct coro *coro;
1529 SV *sv_hook;
1530 void (*xs_hook)(void);
1531
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1899 struct coro *coro = SvSTATE (coro_sv);
1536 1900
1537 if (coro->flags & CF_READY) 1901 if (coro->flags & CF_READY)
1538 return 0; 1902 return 0;
1539 1903
1540 coro->flags |= CF_READY; 1904 coro->flags |= CF_READY;
1541 1905
1542 LOCK; 1906 coro_enq (aTHX_ coro);
1543 1907
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1908 if (!coro_nready++)
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1909 if (coroapi.readyhook)
1546 1910 coroapi.readyhook ();
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1548 ++coro_nready;
1549
1550 UNLOCK;
1551
1552 if (sv_hook)
1553 {
1554 dSP;
1555
1556 ENTER;
1557 SAVETMPS;
1558
1559 PUSHMARK (SP);
1560 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD);
1562 SPAGAIN;
1563
1564 FREETMPS;
1565 LEAVE;
1566 }
1567
1568 if (xs_hook)
1569 xs_hook ();
1570 1911
1571 return 1; 1912 return 1;
1572} 1913}
1573 1914
1574static int 1915static int
1575api_is_ready (pTHX_ SV *coro_sv) 1916api_is_ready (pTHX_ SV *coro_sv)
1576{ 1917{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1918 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1919}
1579 1920
1580INLINE void 1921/* expects to own a reference to next->hv */
1922ecb_inline void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1923prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1924{
1583 SV *prev_sv, *next_sv;
1584
1585 for (;;)
1586 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX);
1589
1590 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv))
1592 {
1593 dSP;
1594 UNLOCK;
1595
1596 ENTER;
1597 SAVETMPS;
1598
1599 PUSHMARK (SP);
1600 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1603
1604 FREETMPS;
1605 LEAVE;
1606 continue;
1607 }
1608
1609 ta->next = SvSTATE (next_sv);
1610
1611 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */
1617 continue;
1618 }
1619
1620 --coro_nready;
1621 UNLOCK;
1622 break;
1623 }
1624
1625 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1925 SV *prev_sv = SvRV (coro_current);
1926
1627 ta->prev = SvSTATE (prev_sv); 1927 ta->prev = SvSTATE_hv (prev_sv);
1928 ta->next = next;
1929
1628 TRANSFER_CHECK (*ta); 1930 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1931
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1932 SvRV_set (coro_current, (SV *)next->hv);
1632 1933
1633 LOCK;
1634 free_coro_mortal (aTHX); 1934 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1935 coro_mortal = prev_sv;
1636 UNLOCK;
1637} 1936}
1638 1937
1639INLINE void 1938static void
1939prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1940{
1941 for (;;)
1942 {
1943 struct coro *next = coro_deq (aTHX);
1944
1945 if (ecb_expect_true (next))
1946 {
1947 /* cannot transfer to destroyed coros, skip and look for next */
1948 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1949 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1950 else
1951 {
1952 next->flags &= ~CF_READY;
1953 --coro_nready;
1954
1955 prepare_schedule_to (aTHX_ ta, next);
1956 break;
1957 }
1958 }
1959 else
1960 {
1961 /* nothing to schedule: call the idle handler */
1962 if (SvROK (sv_idle)
1963 && SvOBJECT (SvRV (sv_idle)))
1964 {
1965 if (SvRV (sv_idle) == SvRV (coro_current))
1966 {
1967 require_pv ("Carp");
1968
1969 {
1970 dSP;
1971
1972 ENTER;
1973 SAVETMPS;
1974
1975 PUSHMARK (SP);
1976 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
1977 PUTBACK;
1978 call_pv ("Carp::confess", G_VOID | G_DISCARD);
1979
1980 FREETMPS;
1981 LEAVE;
1982 }
1983 }
1984
1985 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1986 api_ready (aTHX_ SvRV (sv_idle));
1987 --coro_nready;
1988 }
1989 else
1990 {
1991 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1992 dSP;
1993
1994 ENTER;
1995 SAVETMPS;
1996
1997 PUSHMARK (SP);
1998 PUTBACK;
1999 call_sv (sv_idle, G_VOID | G_DISCARD);
2000
2001 FREETMPS;
2002 LEAVE;
2003 }
2004 }
2005 }
2006}
2007
2008ecb_inline void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 2009prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 2010{
1642 api_ready (aTHX_ coro_current); 2011 api_ready (aTHX_ coro_current);
1643 prepare_schedule (aTHX_ ta); 2012 prepare_schedule (aTHX_ ta);
1644} 2013}
1645 2014
1646INLINE void 2015ecb_inline void
1647prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2016prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1648{ 2017{
1649 SV *prev = SvRV (coro_current); 2018 SV *prev = SvRV (coro_current);
1650 2019
1651 if (coro_nready) 2020 if (coro_nready)
… …
1664 2033
1665 prepare_schedule (aTHX_ &ta); 2034 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 2035 TRANSFER (ta, 1);
1667} 2036}
1668 2037
2038static void
2039api_schedule_to (pTHX_ SV *coro_sv)
2040{
2041 struct coro_transfer_args ta;
2042 struct coro *next = SvSTATE (coro_sv);
2043
2044 SvREFCNT_inc_NN (coro_sv);
2045 prepare_schedule_to (aTHX_ &ta, next);
2046}
2047
1669static int 2048static int
1670api_cede (pTHX) 2049api_cede (pTHX)
1671{ 2050{
1672 struct coro_transfer_args ta; 2051 struct coro_transfer_args ta;
1673 2052
1674 prepare_cede (aTHX_ &ta); 2053 prepare_cede (aTHX_ &ta);
1675 2054
1676 if (expect_true (ta.prev != ta.next)) 2055 if (ecb_expect_true (ta.prev != ta.next))
1677 { 2056 {
1678 TRANSFER (ta, 1); 2057 TRANSFER (ta, 1);
1679 return 1; 2058 return 1;
1680 } 2059 }
1681 else 2060 else
… …
1700static void 2079static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 2080api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 2081{
1703 struct coro *coro = SvSTATE (coro_sv); 2082 struct coro *coro = SvSTATE (coro_sv);
1704 2083
2084 if (coro->flags & CF_RUNNING)
2085 croak ("cannot enable tracing on a running coroutine, caught");
2086
1705 if (flags & CC_TRACE) 2087 if (flags & CC_TRACE)
1706 { 2088 {
1707 if (!coro->cctx) 2089 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 2090 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 2091 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 2092 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 2093
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2094 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 2095 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2096 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 2097 {
… …
1720 else 2102 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 2103 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 2104 }
1723} 2105}
1724 2106
1725#if 0 2107static void
2108coro_push_av (pTHX_ AV *av, I32 gimme_v)
2109{
2110 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2111 {
2112 dSP;
2113
2114 if (gimme_v == G_SCALAR)
2115 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2116 else
2117 {
2118 int i;
2119 EXTEND (SP, AvFILLp (av) + 1);
2120
2121 for (i = 0; i <= AvFILLp (av); ++i)
2122 PUSHs (AvARRAY (av)[i]);
2123 }
2124
2125 PUTBACK;
2126 }
2127}
2128
2129static void
2130coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2131{
2132 if (!coro->on_destroy)
2133 coro->on_destroy = newAV ();
2134
2135 av_push (coro->on_destroy, cb);
2136}
2137
2138static void
2139slf_destroy_join (pTHX_ struct CoroSLF *frame)
2140{
2141 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2142}
2143
1726static int 2144static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2145slf_check_join (pTHX_ struct CoroSLF *frame)
1728{ 2146{
1729 AV *padlist; 2147 struct coro *coro = (struct coro *)frame->data;
1730 AV *av = (AV *)mg->mg_obj;
1731 2148
1732 abort (); 2149 if (!coro->status)
2150 return 1;
2151
2152 frame->destroy = 0;
2153
2154 coro_push_av (aTHX_ coro->status, GIMME_V);
2155
2156 SvREFCNT_dec ((SV *)coro->hv);
1733 2157
1734 return 0; 2158 return 0;
1735} 2159}
1736 2160
1737static MGVTBL coro_gensub_vtbl = { 2161static void
1738 0, 0, 0, 0, 2162slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 2163{
1740}; 2164 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
1741#endif 2165
2166 if (items > 1)
2167 croak ("join called with too many arguments");
2168
2169 if (coro->status)
2170 frame->prepare = prepare_nop;
2171 else
2172 {
2173 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2174 frame->prepare = prepare_schedule;
2175 }
2176
2177 frame->check = slf_check_join;
2178 frame->destroy = slf_destroy_join;
2179 frame->data = (void *)coro;
2180 SvREFCNT_inc (coro->hv);
2181}
2182
2183static void
2184coro_call_on_destroy (pTHX_ struct coro *coro)
2185{
2186 AV *od = coro->on_destroy;
2187
2188 if (!od)
2189 return;
2190
2191 coro->on_destroy = 0;
2192 sv_2mortal ((SV *)od);
2193
2194 while (AvFILLp (od) >= 0)
2195 {
2196 SV *cb = sv_2mortal (av_pop (od));
2197
2198 /* coro hv's (and only hv's at the moment) are supported as well */
2199 if (SvSTATEhv_p (aTHX_ cb))
2200 api_ready (aTHX_ cb);
2201 else
2202 {
2203 dSP; /* don't disturb outer sp */
2204 PUSHMARK (SP);
2205
2206 if (coro->status)
2207 {
2208 PUTBACK;
2209 coro_push_av (aTHX_ coro->status, G_ARRAY);
2210 SPAGAIN;
2211 }
2212
2213 PUTBACK;
2214 call_sv (cb, G_VOID | G_DISCARD);
2215 }
2216 }
2217}
2218
2219static void
2220coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2221{
2222 AV *av;
2223
2224 if (coro->status)
2225 {
2226 av = coro->status;
2227 av_clear (av);
2228 }
2229 else
2230 av = coro->status = newAV ();
2231
2232 /* items are actually not so common, so optimise for this case */
2233 if (items)
2234 {
2235 int i;
2236
2237 av_extend (av, items - 1);
2238
2239 for (i = 0; i < items; ++i)
2240 av_push (av, SvREFCNT_inc_NN (arg [i]));
2241 }
2242}
2243
2244static void
2245slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2246{
2247 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2248 api_ready (aTHX_ sv_manager);
2249
2250 frame->prepare = prepare_schedule;
2251 frame->check = slf_check_repeat;
2252
2253 /* as a minor optimisation, we could unwind all stacks here */
2254 /* but that puts extra pressure on pp_slf, and is not worth much */
2255 /*coro_unwind_stacks (aTHX);*/
2256}
2257
2258static void
2259slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2260{
2261 HV *coro_hv = (HV *)SvRV (coro_current);
2262
2263 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2264 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2265}
2266
2267static void
2268slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2269{
2270 HV *coro_hv;
2271 struct coro *coro;
2272
2273 if (items <= 0)
2274 croak ("Coro::cancel called without coro object,");
2275
2276 coro = SvSTATE (arg [0]);
2277 coro_hv = coro->hv;
2278
2279 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2280
2281 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2282 {
2283 /* coro currently busy cancelling something, so just notify it */
2284 coro->slf_frame.data = (void *)coro;
2285
2286 frame->prepare = prepare_nop;
2287 frame->check = slf_check_nop;
2288 }
2289 else if (coro_hv == (HV *)SvRV (coro_current))
2290 {
2291 /* cancelling the current coro is allowed, and equals terminate */
2292 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2293 }
2294 else
2295 {
2296 struct coro *self = SvSTATE_current;
2297
2298 if (!self)
2299 croak ("Coro::cancel called outside of thread content,");
2300
2301 /* otherwise we cancel directly, purely for speed reasons
2302 * unfortunately, this requires some magic trickery, as
2303 * somebody else could cancel us, so we have to fight the cancellation.
2304 * this is ugly, and hopefully fully worth the extra speed.
2305 * besides, I can't get the slow-but-safe version working...
2306 */
2307 slf_frame.data = 0;
2308 self->flags |= CF_NOCANCEL;
2309 coro_state_destroy (aTHX_ coro);
2310 self->flags &= ~CF_NOCANCEL;
2311
2312 if (slf_frame.data)
2313 {
2314 /* while we were busy we have been cancelled, so terminate */
2315 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2316 }
2317 else
2318 {
2319 frame->prepare = prepare_nop;
2320 frame->check = slf_check_nop;
2321 }
2322 }
2323}
2324
2325static int
2326slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2327{
2328 frame->prepare = 0;
2329 coro_unwind_stacks (aTHX);
2330
2331 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2332
2333 return 1;
2334}
2335
2336static int
2337safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2338{
2339 if (coro->cctx)
2340 croak ("coro inside C callback, unable to cancel at this time, caught");
2341
2342 if (coro->flags & CF_NEW)
2343 {
2344 coro_set_status (aTHX_ coro, arg, items);
2345 coro_state_destroy (aTHX_ coro);
2346 }
2347 else
2348 {
2349 if (!coro->slf_frame.prepare)
2350 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2351
2352 slf_destroy (aTHX_ coro);
2353
2354 coro_set_status (aTHX_ coro, arg, items);
2355 coro->slf_frame.prepare = prepare_nop;
2356 coro->slf_frame.check = slf_check_safe_cancel;
2357
2358 api_ready (aTHX_ (SV *)coro->hv);
2359 }
2360
2361 return 1;
2362}
2363
2364/*****************************************************************************/
2365/* async pool handler */
2366
2367static int
2368slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2369{
2370 HV *hv = (HV *)SvRV (coro_current);
2371 struct coro *coro = (struct coro *)frame->data;
2372
2373 if (!coro->invoke_cb)
2374 return 1; /* loop till we have invoke */
2375 else
2376 {
2377 hv_store (hv, "desc", sizeof ("desc") - 1,
2378 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2379
2380 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2381
2382 {
2383 dSP;
2384 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2385 PUTBACK;
2386 }
2387
2388 SvREFCNT_dec (GvAV (PL_defgv));
2389 GvAV (PL_defgv) = coro->invoke_av;
2390 coro->invoke_av = 0;
2391
2392 return 0;
2393 }
2394}
2395
2396static void
2397slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2398{
2399 HV *hv = (HV *)SvRV (coro_current);
2400 struct coro *coro = SvSTATE_hv ((SV *)hv);
2401
2402 if (ecb_expect_true (coro->saved_deffh))
2403 {
2404 /* subsequent iteration */
2405 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2406 coro->saved_deffh = 0;
2407
2408 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2409 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2410 {
2411 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2412 return;
2413 }
2414 else
2415 {
2416 av_clear (GvAV (PL_defgv));
2417 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2418
2419 coro->prio = 0;
2420
2421 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2422 api_trace (aTHX_ coro_current, 0);
2423
2424 frame->prepare = prepare_schedule;
2425 av_push (av_async_pool, SvREFCNT_inc (hv));
2426 }
2427 }
2428 else
2429 {
2430 /* first iteration, simply fall through */
2431 frame->prepare = prepare_nop;
2432 }
2433
2434 frame->check = slf_check_pool_handler;
2435 frame->data = (void *)coro;
2436}
2437
2438/*****************************************************************************/
2439/* rouse callback */
2440
2441#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2442
2443static void
2444coro_rouse_callback (pTHX_ CV *cv)
2445{
2446 dXSARGS;
2447 SV *data = (SV *)S_GENSUB_ARG;
2448
2449 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2450 {
2451 /* first call, set args */
2452 SV *coro = SvRV (data);
2453 AV *av = newAV ();
2454
2455 SvRV_set (data, (SV *)av);
2456
2457 /* better take a full copy of the arguments */
2458 while (items--)
2459 av_store (av, items, newSVsv (ST (items)));
2460
2461 api_ready (aTHX_ coro);
2462 SvREFCNT_dec (coro);
2463 }
2464
2465 XSRETURN_EMPTY;
2466}
2467
2468static int
2469slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2470{
2471 SV *data = (SV *)frame->data;
2472
2473 if (CORO_THROW)
2474 return 0;
2475
2476 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2477 return 1;
2478
2479 /* now push all results on the stack */
2480 {
2481 dSP;
2482 AV *av = (AV *)SvRV (data);
2483 int i;
2484
2485 EXTEND (SP, AvFILLp (av) + 1);
2486 for (i = 0; i <= AvFILLp (av); ++i)
2487 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2488
2489 /* we have stolen the elements, so set length to zero and free */
2490 AvFILLp (av) = -1;
2491 av_undef (av);
2492
2493 PUTBACK;
2494 }
2495
2496 return 0;
2497}
2498
2499static void
2500slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2501{
2502 SV *cb;
2503
2504 if (items)
2505 cb = arg [0];
2506 else
2507 {
2508 struct coro *coro = SvSTATE_current;
2509
2510 if (!coro->rouse_cb)
2511 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2512
2513 cb = sv_2mortal (coro->rouse_cb);
2514 coro->rouse_cb = 0;
2515 }
2516
2517 if (!SvROK (cb)
2518 || SvTYPE (SvRV (cb)) != SVt_PVCV
2519 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2520 croak ("Coro::rouse_wait called with illegal callback argument,");
2521
2522 {
2523 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2524 SV *data = (SV *)S_GENSUB_ARG;
2525
2526 frame->data = (void *)data;
2527 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2528 frame->check = slf_check_rouse_wait;
2529 }
2530}
2531
2532static SV *
2533coro_new_rouse_cb (pTHX)
2534{
2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv (hv);
2537 SV *data = newRV_inc ((SV *)hv);
2538 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2539
2540 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2541 SvREFCNT_dec (data); /* magicext increases the refcount */
2542
2543 SvREFCNT_dec (coro->rouse_cb);
2544 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2545
2546 return cb;
2547}
2548
2549/*****************************************************************************/
2550/* schedule-like-function opcode (SLF) */
2551
2552static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2553static const CV *slf_cv;
2554static SV **slf_argv;
2555static int slf_argc, slf_arga; /* count, allocated */
2556static I32 slf_ax; /* top of stack, for restore */
2557
2558/* this restores the stack in the case we patched the entersub, to */
2559/* recreate the stack frame as perl will on following calls */
2560/* since entersub cleared the stack */
2561static OP *
2562pp_restore (pTHX)
2563{
2564 int i;
2565 SV **SP = PL_stack_base + slf_ax;
2566
2567 PUSHMARK (SP);
2568
2569 EXTEND (SP, slf_argc + 1);
2570
2571 for (i = 0; i < slf_argc; ++i)
2572 PUSHs (sv_2mortal (slf_argv [i]));
2573
2574 PUSHs ((SV *)CvGV (slf_cv));
2575
2576 RETURNOP (slf_restore.op_first);
2577}
2578
2579static void
2580slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2581{
2582 SV **arg = (SV **)slf_frame.data;
2583
2584 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2585}
2586
2587static void
2588slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2589{
2590 if (items != 2)
2591 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2592
2593 frame->prepare = slf_prepare_transfer;
2594 frame->check = slf_check_nop;
2595 frame->data = (void *)arg; /* let's hope it will stay valid */
2596}
2597
2598static void
2599slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2600{
2601 frame->prepare = prepare_schedule;
2602 frame->check = slf_check_nop;
2603}
2604
2605static void
2606slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2607{
2608 struct coro *next = (struct coro *)slf_frame.data;
2609
2610 SvREFCNT_inc_NN (next->hv);
2611 prepare_schedule_to (aTHX_ ta, next);
2612}
2613
2614static void
2615slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2616{
2617 if (!items)
2618 croak ("Coro::schedule_to expects a coroutine argument, caught");
2619
2620 frame->data = (void *)SvSTATE (arg [0]);
2621 frame->prepare = slf_prepare_schedule_to;
2622 frame->check = slf_check_nop;
2623}
2624
2625static void
2626slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2627{
2628 api_ready (aTHX_ SvRV (coro_current));
2629
2630 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2631}
2632
2633static void
2634slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2635{
2636 frame->prepare = prepare_cede;
2637 frame->check = slf_check_nop;
2638}
2639
2640static void
2641slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2642{
2643 frame->prepare = prepare_cede_notself;
2644 frame->check = slf_check_nop;
2645}
2646
2647/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2648static void
2649slf_destroy (pTHX_ struct coro *coro)
2650{
2651 struct CoroSLF frame = coro->slf_frame;
2652
2653 /*
2654 * The on_destroy below most likely is from an SLF call.
2655 * Since by definition the SLF call will not finish when we destroy
2656 * the coro, we will have to force-finish it here, otherwise
2657 * cleanup functions cannot call SLF functions.
2658 */
2659 coro->slf_frame.prepare = 0;
2660
2661 /* this callback is reserved for slf functions needing to do cleanup */
2662 if (frame.destroy && frame.prepare && !PL_dirty)
2663 frame.destroy (aTHX_ &frame);
2664}
2665
2666/*
2667 * these not obviously related functions are all rolled into one
2668 * function to increase chances that they all will call transfer with the same
2669 * stack offset
2670 * SLF stands for "schedule-like-function".
2671 */
2672static OP *
2673pp_slf (pTHX)
2674{
2675 I32 checkmark; /* mark SP to see how many elements check has pushed */
2676
2677 /* set up the slf frame, unless it has already been set-up */
2678 /* the latter happens when a new coro has been started */
2679 /* or when a new cctx was attached to an existing coroutine */
2680 if (ecb_expect_true (!slf_frame.prepare))
2681 {
2682 /* first iteration */
2683 dSP;
2684 SV **arg = PL_stack_base + TOPMARK + 1;
2685 int items = SP - arg; /* args without function object */
2686 SV *gv = *sp;
2687
2688 /* do a quick consistency check on the "function" object, and if it isn't */
2689 /* for us, divert to the real entersub */
2690 if (SvTYPE (gv) != SVt_PVGV
2691 || !GvCV (gv)
2692 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2693 return PL_ppaddr[OP_ENTERSUB](aTHX);
2694
2695 if (!(PL_op->op_flags & OPf_STACKED))
2696 {
2697 /* ampersand-form of call, use @_ instead of stack */
2698 AV *av = GvAV (PL_defgv);
2699 arg = AvARRAY (av);
2700 items = AvFILLp (av) + 1;
2701 }
2702
2703 /* now call the init function, which needs to set up slf_frame */
2704 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2705 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2706
2707 /* pop args */
2708 SP = PL_stack_base + POPMARK;
2709
2710 PUTBACK;
2711 }
2712
2713 /* now that we have a slf_frame, interpret it! */
2714 /* we use a callback system not to make the code needlessly */
2715 /* complicated, but so we can run multiple perl coros from one cctx */
2716
2717 do
2718 {
2719 struct coro_transfer_args ta;
2720
2721 slf_frame.prepare (aTHX_ &ta);
2722 TRANSFER (ta, 0);
2723
2724 checkmark = PL_stack_sp - PL_stack_base;
2725 }
2726 while (slf_frame.check (aTHX_ &slf_frame));
2727
2728 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2729
2730 /* exception handling */
2731 if (ecb_expect_false (CORO_THROW))
2732 {
2733 SV *exception = sv_2mortal (CORO_THROW);
2734
2735 CORO_THROW = 0;
2736 sv_setsv (ERRSV, exception);
2737 croak (0);
2738 }
2739
2740 /* return value handling - mostly like entersub */
2741 /* make sure we put something on the stack in scalar context */
2742 if (GIMME_V == G_SCALAR
2743 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2744 {
2745 dSP;
2746 SV **bot = PL_stack_base + checkmark;
2747
2748 if (sp == bot) /* too few, push undef */
2749 bot [1] = &PL_sv_undef;
2750 else /* too many, take last one */
2751 bot [1] = *sp;
2752
2753 SP = bot + 1;
2754
2755 PUTBACK;
2756 }
2757
2758 return NORMAL;
2759}
2760
2761static void
2762api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2763{
2764 int i;
2765 SV **arg = PL_stack_base + ax;
2766 int items = PL_stack_sp - arg + 1;
2767
2768 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2769
2770 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2771 && PL_op->op_ppaddr != pp_slf)
2772 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2773
2774 CvFLAGS (cv) |= CVf_SLF;
2775 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2776 slf_cv = cv;
2777
2778 /* we patch the op, and then re-run the whole call */
2779 /* we have to put the same argument on the stack for this to work */
2780 /* and this will be done by pp_restore */
2781 slf_restore.op_next = (OP *)&slf_restore;
2782 slf_restore.op_type = OP_CUSTOM;
2783 slf_restore.op_ppaddr = pp_restore;
2784 slf_restore.op_first = PL_op;
2785
2786 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2787
2788 if (PL_op->op_flags & OPf_STACKED)
2789 {
2790 if (items > slf_arga)
2791 {
2792 slf_arga = items;
2793 Safefree (slf_argv);
2794 New (0, slf_argv, slf_arga, SV *);
2795 }
2796
2797 slf_argc = items;
2798
2799 for (i = 0; i < items; ++i)
2800 slf_argv [i] = SvREFCNT_inc (arg [i]);
2801 }
2802 else
2803 slf_argc = 0;
2804
2805 PL_op->op_ppaddr = pp_slf;
2806 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2807
2808 PL_op = (OP *)&slf_restore;
2809}
2810
2811/*****************************************************************************/
2812/* dynamic wind */
2813
2814static void
2815on_enterleave_call (pTHX_ SV *cb)
2816{
2817 dSP;
2818
2819 PUSHSTACK;
2820
2821 PUSHMARK (SP);
2822 PUTBACK;
2823 call_sv (cb, G_VOID | G_DISCARD);
2824 SPAGAIN;
2825
2826 POPSTACK;
2827}
2828
2829static SV *
2830coro_avp_pop_and_free (pTHX_ AV **avp)
2831{
2832 AV *av = *avp;
2833 SV *res = av_pop (av);
2834
2835 if (AvFILLp (av) < 0)
2836 {
2837 *avp = 0;
2838 SvREFCNT_dec (av);
2839 }
2840
2841 return res;
2842}
2843
2844static void
2845coro_pop_on_enter (pTHX_ void *coro)
2846{
2847 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2848 SvREFCNT_dec (cb);
2849}
2850
2851static void
2852coro_pop_on_leave (pTHX_ void *coro)
2853{
2854 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2855 on_enterleave_call (aTHX_ sv_2mortal (cb));
2856}
2857
2858static void
2859enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2860{
2861 if (!hook)
2862 return;
2863
2864 if (!*avp)
2865 {
2866 *avp = newAV ();
2867 AvREAL_off (*avp);
2868 }
2869
2870 av_push (*avp, (SV *)hook);
2871 av_push (*avp, (SV *)arg);
2872}
2873
2874static void
2875enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2876{
2877 AV *av = *avp;
2878 int i;
2879
2880 if (!av)
2881 return;
2882
2883 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2884 if (AvARRAY (av)[i] == (SV *)hook)
2885 {
2886 if (execute)
2887 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2888
2889 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2890 av_pop (av);
2891 av_pop (av);
2892 break;
2893 }
2894
2895 if (AvFILLp (av) >= 0)
2896 {
2897 *avp = 0;
2898 SvREFCNT_dec_NN (av);
2899 }
2900}
2901
2902static void
2903api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2904{
2905 struct coro *coro = SvSTATE (coro_sv);
2906
2907 if (SvSTATE_current == coro)
2908 if (enter)
2909 enter (aTHX_ enter_arg);
2910
2911 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2912 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2913}
2914
2915static void
2916api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2917{
2918 struct coro *coro = SvSTATE (coro_sv);
2919
2920 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2921 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2922}
2923
2924static void
2925savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2926{
2927 struct coro *coro = SvSTATE_current;
2928
2929 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2930}
2931
2932static void
2933savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2934{
2935 struct coro *coro = SvSTATE_current;
2936
2937 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2938}
2939
2940static void
2941api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2942{
2943 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2944
2945 /* this ought to be much cheaper than malloc + a single destructor call */
2946 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2947 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2948}
1742 2949
1743/*****************************************************************************/ 2950/*****************************************************************************/
1744/* PerlIO::cede */ 2951/* PerlIO::cede */
1745 2952
1746typedef struct 2953typedef struct
1747{ 2954{
1748 PerlIOBuf base; 2955 PerlIOBuf base;
1749 NV next, every; 2956 NV next, every;
1750} PerlIOCede; 2957} PerlIOCede;
1751 2958
1752static IV 2959static IV ecb_cold
1753PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2960PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1754{ 2961{
1755 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2962 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1756 2963
1757 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2964 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1758 self->next = nvtime () + self->every; 2965 self->next = nvtime () + self->every;
1759 2966
1760 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2967 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1761} 2968}
1762 2969
1763static SV * 2970static SV * ecb_cold
1764PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2971PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1765{ 2972{
1766 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2973 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1767 2974
1768 return newSVnv (self->every); 2975 return newSVnv (self->every);
… …
1814 PerlIOBuf_get_cnt, 3021 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 3022 PerlIOBuf_set_ptrcnt,
1816}; 3023};
1817 3024
1818/*****************************************************************************/ 3025/*****************************************************************************/
3026/* Coro::Semaphore & Coro::Signal */
1819 3027
1820static const CV *slf_cv; /* for quick consistency check */
1821
1822static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1823static SV *slf_arg0;
1824static SV *slf_arg1;
1825static SV *slf_arg2;
1826
1827/* this restores the stack in the case we patched the entersub, to */
1828/* recreate the stack frame as perl will on following calls */
1829/* since entersub cleared the stack */
1830static OP * 3028static SV *
1831pp_restore (pTHX) 3029coro_waitarray_new (pTHX_ int count)
1832{ 3030{
1833 dSP; 3031 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3032 AV *av = newAV ();
3033 SV **ary;
1834 3034
1835 PUSHMARK (SP); 3035 /* unfortunately, building manually saves memory */
3036 Newx (ary, 2, SV *);
3037 AvALLOC (av) = ary;
3038#if PERL_VERSION_ATLEAST (5,10,0)
3039 AvARRAY (av) = ary;
3040#else
3041 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3042 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3043 SvPVX ((SV *)av) = (char *)ary;
3044#endif
3045 AvMAX (av) = 1;
3046 AvFILLp (av) = 0;
3047 ary [0] = newSViv (count);
1836 3048
1837 EXTEND (SP, 3); 3049 return newRV_noinc ((SV *)av);
1838 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1839 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1840 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1841 PUSHs ((SV *)CvGV (slf_cv));
1842
1843 RETURNOP (slf_restore.op_first);
1844} 3050}
1845 3051
1846static void 3052/* semaphore */
1847slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1848{
1849 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1850}
1851 3053
1852static void 3054static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 3055coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 3056{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 3057 SV *count_sv = AvARRAY (av)[0];
3058 IV count = SvIVX (count_sv);
1856 3059
1857 frame->prepare = slf_prepare_set_stacklevel; 3060 count += adjust;
1858 frame->check = slf_check_nop; 3061 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 3062
1862static void 3063 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 3064 while (count > 0 && AvFILLp (av) > 0)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (ta, arg [0], arg [1]);
1868}
1869
1870static void
1871slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875
1876 frame->prepare = slf_prepare_transfer;
1877 frame->check = slf_check_nop;
1878 frame->data = (void *)arg; /* let's hope it will stay valid */
1879}
1880
1881static void
1882slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1883{
1884 frame->prepare = prepare_schedule;
1885 frame->check = slf_check_nop;
1886}
1887
1888static void
1889slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1890{
1891 frame->prepare = prepare_cede;
1892 frame->check = slf_check_nop;
1893}
1894
1895static void
1896slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1897{
1898 frame->prepare = prepare_cede_notself;
1899 frame->check = slf_check_nop;
1900}
1901
1902/* we hijack an hopefully unused CV flag for our purposes */
1903#define CVf_SLF 0x4000
1904
1905/*
1906 * these not obviously related functions are all rolled into one
1907 * function to increase chances that they all will call transfer with the same
1908 * stack offset
1909 * SLF stands for "schedule-like-function".
1910 */
1911static OP *
1912pp_slf (pTHX)
1913{
1914 I32 checkmark; /* mark SP to see how many elements check has pushed */
1915
1916 /* set up the slf frame, unless it has already been set-up */
1917 /* the latter happens when a new coro has been started */
1918 /* or when a new cctx was attached to an existing coroutine */
1919 if (expect_true (!slf_frame.prepare))
1920 { 3065 {
1921 /* first iteration */ 3066 SV *cb;
1922 dSP;
1923 SV **arg = PL_stack_base + TOPMARK + 1;
1924 int items = SP - arg; /* args without function object */
1925 SV *gv = *sp;
1926 3067
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 3068 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 3069 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 3070 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 3071 cb = av_shift (av);
1931 3072
1932 /* pop args */ 3073 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 3074 {
1937 /* ampersand-form of call, use @_ instead of stack */ 3075 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 3076 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 3077 }
1942 3078 else if (SvTYPE (cb) == SVt_PVCV)
1943 PUTBACK;
1944
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 {
1954 struct coro_transfer_args ta;
1955
1956 slf_frame.prepare (aTHX_ &ta);
1957 TRANSFER (ta, 0);
1958
1959 checkmark = PL_stack_sp - PL_stack_base;
1960 }
1961 while (slf_frame.check (aTHX_ &slf_frame));
1962
1963 {
1964 dSP;
1965 SV **bot = PL_stack_base + checkmark;
1966 int gimme = GIMME_V;
1967
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1969
1970 /* make sure we put something on the stack in scalar context */
1971 if (gimme == G_SCALAR)
1972 { 3079 {
1973 if (sp == bot) 3080 dSP;
1974 XPUSHs (&PL_sv_undef); 3081 PUSHMARK (SP);
1975 3082 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1976 SP = bot + 1; 3083 PUTBACK;
3084 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1977 } 3085 }
1978 3086
1979 PUTBACK; 3087 SvREFCNT_dec_NN (cb);
1980 } 3088 }
1981
1982 return NORMAL;
1983} 3089}
1984 3090
1985static void 3091static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 3092coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
1987{ 3093{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 3094 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 3095 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1991 && PL_op->op_ppaddr != pp_slf)
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993
1994 if (items > 3)
1995 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1996
1997 CvFLAGS (cv) |= CVf_SLF;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1999 slf_cv = cv;
2000
2001 /* we patch the op, and then re-run the whole call */
2002 /* we have to put the same argument on the stack for this to work */
2003 /* and this will be done by pp_restore */
2004 slf_restore.op_next = (OP *)&slf_restore;
2005 slf_restore.op_type = OP_NULL;
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
2012
2013 PL_op->op_ppaddr = pp_slf;
2014
2015 PL_op = (OP *)&slf_restore;
2016} 3096}
2017
2018/*****************************************************************************/
2019 3097
2020static int 3098static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3099slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2022{ 3100{
2023 AV *av = (AV *)frame->data; 3101 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 3102 SV *count_sv = AvARRAY (av)[0];
3103 SV *coro_hv = SvRV (coro_current);
2025 3104
3105 frame->destroy = 0;
3106
3107 /* if we are about to throw, don't actually acquire the lock, just throw */
3108 if (ecb_expect_false (CORO_THROW))
3109 {
3110 /* we still might be responsible for the semaphore, so wake up others */
3111 coro_semaphore_adjust (aTHX_ av, 0);
3112
3113 return 0;
3114 }
2026 if (SvIVX (count_sv) > 0) 3115 else if (SvIVX (count_sv) > 0)
2027 { 3116 {
3117 if (acquire)
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3118 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3119 else
3120 coro_semaphore_adjust (aTHX_ av, 0);
3121
2029 return 0; 3122 return 0;
2030 } 3123 }
2031 else 3124 else
2032 { 3125 {
2033 int i; 3126 int i;
2034 /* if we were woken up but can't down, we look through the whole */ 3127 /* if we were woken up but can't down, we look through the whole */
2035 /* waiters list and only add us if we aren't in there already */ 3128 /* waiters list and only add us if we aren't in there already */
2036 /* this avoids some degenerate memory usage cases */ 3129 /* this avoids some degenerate memory usage cases */
2037 3130 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2038 for (i = 1; i <= AvFILLp (av); ++i)
2039 if (AvARRAY (av)[i] == SvRV (coro_current)) 3131 if (AvARRAY (av)[i] == coro_hv)
2040 return 1; 3132 return 1;
2041 3133
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3134 av_push (av, SvREFCNT_inc (coro_hv));
2043 return 1; 3135 return 1;
2044 } 3136 }
2045} 3137}
2046 3138
2047static void 3139static int
3140slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3141{
3142 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3143}
3144
3145static int
3146slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3147{
3148 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3149}
3150
3151static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 3152slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 3153{
2050 AV *av = (AV *)SvRV (arg [0]); 3154 AV *av = (AV *)SvRV (arg [0]);
2051 3155
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 3156 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 3157 {
… …
2058 { 3162 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3163 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 3164
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3165 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 3166 frame->prepare = prepare_schedule;
3167 /* to avoid race conditions when a woken-up coro gets terminated */
3168 /* we arrange for a temporary on_destroy that calls adjust (0) */
3169 frame->destroy = coro_semaphore_destroy;
2063 } 3170 }
3171}
2064 3172
3173static void
3174slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3175{
3176 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 3177 frame->check = slf_check_semaphore_down;
2066
2067} 3178}
3179
3180static void
3181slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3182{
3183 if (items >= 2)
3184 {
3185 /* callback form */
3186 AV *av = (AV *)SvRV (arg [0]);
3187 SV *cb_cv = s_get_cv_croak (arg [1]);
3188
3189 av_push (av, SvREFCNT_inc_NN (cb_cv));
3190
3191 if (SvIVX (AvARRAY (av)[0]) > 0)
3192 coro_semaphore_adjust (aTHX_ av, 0);
3193
3194 frame->prepare = prepare_nop;
3195 frame->check = slf_check_nop;
3196 }
3197 else
3198 {
3199 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3200 frame->check = slf_check_semaphore_wait;
3201 }
3202}
3203
3204/* signal */
3205
3206static void
3207coro_signal_wake (pTHX_ AV *av, int count)
3208{
3209 SvIVX (AvARRAY (av)[0]) = 0;
3210
3211 /* now signal count waiters */
3212 while (count > 0 && AvFILLp (av) > 0)
3213 {
3214 SV *cb;
3215
3216 /* swap first two elements so we can shift a waiter */
3217 cb = AvARRAY (av)[0];
3218 AvARRAY (av)[0] = AvARRAY (av)[1];
3219 AvARRAY (av)[1] = cb;
3220
3221 cb = av_shift (av);
3222
3223 if (SvTYPE (cb) == SVt_PVCV)
3224 {
3225 dSP;
3226 PUSHMARK (SP);
3227 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3228 PUTBACK;
3229 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3230 }
3231 else
3232 {
3233 api_ready (aTHX_ cb);
3234 sv_setiv (cb, 0); /* signal waiter */
3235 }
3236
3237 SvREFCNT_dec_NN (cb);
3238
3239 --count;
3240 }
3241}
3242
3243static int
3244slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3245{
3246 /* if we are about to throw, also stop waiting */
3247 return SvROK ((SV *)frame->data) && !CORO_THROW;
3248}
3249
3250static void
3251slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3252{
3253 AV *av = (AV *)SvRV (arg [0]);
3254
3255 if (items >= 2)
3256 {
3257 SV *cb_cv = s_get_cv_croak (arg [1]);
3258 av_push (av, SvREFCNT_inc_NN (cb_cv));
3259
3260 if (SvIVX (AvARRAY (av)[0]))
3261 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3262
3263 frame->prepare = prepare_nop;
3264 frame->check = slf_check_nop;
3265 }
3266 else if (SvIVX (AvARRAY (av)[0]))
3267 {
3268 SvIVX (AvARRAY (av)[0]) = 0;
3269 frame->prepare = prepare_nop;
3270 frame->check = slf_check_nop;
3271 }
3272 else
3273 {
3274 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3275
3276 av_push (av, waiter);
3277
3278 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3279 frame->prepare = prepare_schedule;
3280 frame->check = slf_check_signal_wait;
3281 }
3282}
3283
3284/*****************************************************************************/
3285/* Coro::AIO */
3286
3287#define CORO_MAGIC_type_aio PERL_MAGIC_ext
3288
3289/* helper storage struct */
3290struct io_state
3291{
3292 int errorno;
3293 I32 laststype; /* U16 in 5.10.0 */
3294 int laststatval;
3295 Stat_t statcache;
3296};
3297
3298static void
3299coro_aio_callback (pTHX_ CV *cv)
3300{
3301 dXSARGS;
3302 AV *state = (AV *)S_GENSUB_ARG;
3303 SV *coro = av_pop (state);
3304 SV *data_sv = newSV (sizeof (struct io_state));
3305
3306 av_extend (state, items - 1);
3307
3308 sv_upgrade (data_sv, SVt_PV);
3309 SvCUR_set (data_sv, sizeof (struct io_state));
3310 SvPOK_only (data_sv);
3311
3312 {
3313 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3314
3315 data->errorno = errno;
3316 data->laststype = PL_laststype;
3317 data->laststatval = PL_laststatval;
3318 data->statcache = PL_statcache;
3319 }
3320
3321 /* now build the result vector out of all the parameters and the data_sv */
3322 {
3323 int i;
3324
3325 for (i = 0; i < items; ++i)
3326 av_push (state, SvREFCNT_inc_NN (ST (i)));
3327 }
3328
3329 av_push (state, data_sv);
3330
3331 api_ready (aTHX_ coro);
3332 SvREFCNT_dec_NN (coro);
3333 SvREFCNT_dec_NN ((AV *)state);
3334}
3335
3336static int
3337slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3338{
3339 AV *state = (AV *)frame->data;
3340
3341 /* if we are about to throw, return early */
3342 /* this does not cancel the aio request, but at least */
3343 /* it quickly returns */
3344 if (CORO_THROW)
3345 return 0;
3346
3347 /* one element that is an RV? repeat! */
3348 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3349 return 1;
3350
3351 /* restore status */
3352 {
3353 SV *data_sv = av_pop (state);
3354 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3355
3356 errno = data->errorno;
3357 PL_laststype = data->laststype;
3358 PL_laststatval = data->laststatval;
3359 PL_statcache = data->statcache;
3360
3361 SvREFCNT_dec_NN (data_sv);
3362 }
3363
3364 /* push result values */
3365 {
3366 dSP;
3367 int i;
3368
3369 EXTEND (SP, AvFILLp (state) + 1);
3370 for (i = 0; i <= AvFILLp (state); ++i)
3371 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3372
3373 PUTBACK;
3374 }
3375
3376 return 0;
3377}
3378
3379static void
3380slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3381{
3382 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3383 SV *coro_hv = SvRV (coro_current);
3384 struct coro *coro = SvSTATE_hv (coro_hv);
3385
3386 /* put our coroutine id on the state arg */
3387 av_push (state, SvREFCNT_inc_NN (coro_hv));
3388
3389 /* first see whether we have a non-zero priority and set it as AIO prio */
3390 if (coro->prio)
3391 {
3392 dSP;
3393
3394 static SV *prio_cv;
3395 static SV *prio_sv;
3396
3397 if (ecb_expect_false (!prio_cv))
3398 {
3399 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3400 prio_sv = newSViv (0);
3401 }
3402
3403 PUSHMARK (SP);
3404 sv_setiv (prio_sv, coro->prio);
3405 XPUSHs (prio_sv);
3406
3407 PUTBACK;
3408 call_sv (prio_cv, G_VOID | G_DISCARD);
3409 }
3410
3411 /* now call the original request */
3412 {
3413 dSP;
3414 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3415 int i;
3416
3417 PUSHMARK (SP);
3418
3419 /* first push all args to the stack */
3420 EXTEND (SP, items + 1);
3421
3422 for (i = 0; i < items; ++i)
3423 PUSHs (arg [i]);
3424
3425 /* now push the callback closure */
3426 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3427
3428 /* now call the AIO function - we assume our request is uncancelable */
3429 PUTBACK;
3430 call_sv ((SV *)req, G_VOID | G_DISCARD);
3431 }
3432
3433 /* now that the request is going, we loop till we have a result */
3434 frame->data = (void *)state;
3435 frame->prepare = prepare_schedule;
3436 frame->check = slf_check_aio_req;
3437}
3438
3439static void
3440coro_aio_req_xs (pTHX_ CV *cv)
3441{
3442 dXSARGS;
3443
3444 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3445
3446 XSRETURN_EMPTY;
3447}
3448
3449/*****************************************************************************/
3450
3451#if CORO_CLONE
3452# include "clone.c"
3453#endif
3454
3455/*****************************************************************************/
3456
3457static SV *
3458coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3459{
3460 SV *coro_sv;
3461 struct coro *coro;
3462 MAGIC *mg;
3463 HV *hv;
3464 SV *cb;
3465 int i;
3466
3467 if (argc > 0)
3468 {
3469 cb = s_get_cv_croak (argv [0]);
3470
3471 if (!is_coro)
3472 {
3473 if (CvISXSUB (cb))
3474 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3475
3476 if (!CvROOT (cb))
3477 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3478 }
3479 }
3480
3481 Newz (0, coro, 1, struct coro);
3482 coro->args = newAV ();
3483 coro->flags = CF_NEW;
3484
3485 if (coro_first) coro_first->prev = coro;
3486 coro->next = coro_first;
3487 coro_first = coro;
3488
3489 coro->hv = hv = newHV ();
3490 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3491 mg->mg_flags |= MGf_DUP;
3492 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3493
3494 if (argc > 0)
3495 {
3496 av_extend (coro->args, argc + is_coro - 1);
3497
3498 if (is_coro)
3499 {
3500 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3501 cb = (SV *)cv_coro_run;
3502 }
3503
3504 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3505
3506 for (i = 1; i < argc; i++)
3507 av_push (coro->args, newSVsv (argv [i]));
3508 }
3509
3510 return coro_sv;
3511}
3512
3513#ifndef __cplusplus
3514ecb_cold XS(boot_Coro__State);
3515#endif
3516
3517#if CORO_JIT
3518
3519static void ecb_noinline ecb_cold
3520pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3521{
3522 dSP;
3523 AV *av = newAV ();
3524
3525 av_store (av, 3, newSVuv (d));
3526 av_store (av, 2, newSVuv (c));
3527 av_store (av, 1, newSVuv (b));
3528 av_store (av, 0, newSVuv (a));
3529
3530 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3531
3532 PUTBACK;
3533}
3534
3535static void ecb_noinline ecb_cold
3536jit_init (pTHX)
3537{
3538 dSP;
3539 SV *load, *save;
3540 char *map_base;
3541 char *load_ptr, *save_ptr;
3542 STRLEN load_len, save_len, map_len;
3543 int count;
3544
3545 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3546
3547 PUSHMARK (SP);
3548 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3549 #include "state.h"
3550 count = call_pv ("Coro::State::_jit", G_ARRAY);
3551 SPAGAIN;
3552
3553 save = POPs; save_ptr = SvPVbyte (save, save_len);
3554 load = POPs; load_ptr = SvPVbyte (load, load_len);
3555
3556 map_len = load_len + save_len + 16;
3557
3558 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3559
3560 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3561
3562 load_perl_slots = (load_save_perl_slots_type)map_base;
3563 memcpy (map_base, load_ptr, load_len);
3564
3565 map_base += (load_len + 15) & ~15;
3566
3567 save_perl_slots = (load_save_perl_slots_type)map_base;
3568 memcpy (map_base, save_ptr, save_len);
3569
3570 /* we are good citizens and try to make the page read-only, so the evil evil */
3571 /* hackers might have it a bit more difficult */
3572 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3573
3574 PUTBACK;
3575 eval_pv ("undef &Coro::State::_jit", 1);
3576}
3577
3578#endif
2068 3579
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3580MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 3581
2071PROTOTYPES: DISABLE 3582PROTOTYPES: DISABLE
2072 3583
2073BOOT: 3584BOOT:
2074{ 3585{
3586#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3587#include "state.h"
2075#ifdef USE_ITHREADS 3588#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 3589# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 3590 coro_thx = PERL_GET_CONTEXT;
2079# endif 3591# endif
2080#endif 3592#endif
2081 BOOT_PAGESIZE; 3593 /* perl defines these to check for existance first, but why it doesn't */
3594 /* just create them one at init time is not clear to me, except for */
3595 /* programs trying to delete them, but... */
3596 /* anyway, we declare this as invalid and make sure they are initialised here */
3597 DEFSV;
3598 ERRSV;
3599
3600 cctx_current = cctx_new_empty ();
2082 3601
2083 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3602 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2084 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3603 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2085 3604
2086 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3605 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2101 main_mainstack = PL_mainstack; 3620 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 3621 main_top_env = PL_top_env;
2103 3622
2104 while (main_top_env->je_prev) 3623 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 3624 main_top_env = main_top_env->je_prev;
3625
3626 {
3627 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3628
3629 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3630 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3631
3632 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3633 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3634 }
2106 3635
2107 coroapi.ver = CORO_API_VERSION; 3636 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 3637 coroapi.rev = CORO_API_REVISION;
2109 3638
2110 coroapi.transfer = api_transfer; 3639 coroapi.transfer = api_transfer;
… …
2114 coroapi.prepare_nop = prepare_nop; 3643 coroapi.prepare_nop = prepare_nop;
2115 coroapi.prepare_schedule = prepare_schedule; 3644 coroapi.prepare_schedule = prepare_schedule;
2116 coroapi.prepare_cede = prepare_cede; 3645 coroapi.prepare_cede = prepare_cede;
2117 coroapi.prepare_cede_notself = prepare_cede_notself; 3646 coroapi.prepare_cede_notself = prepare_cede_notself;
2118 3647
2119 { 3648 time_init (aTHX);
2120 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2121 3649
2122 if (!svp) croak ("Time::HiRes is required");
2123 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2124
2125 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2126 }
2127
2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3650 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3651#if CORO_JIT
3652 PUTBACK;
3653 jit_init (aTHX);
3654 SPAGAIN;
3655#endif
2129} 3656}
2130 3657
2131SV * 3658SV *
2132new (char *klass, ...) 3659new (SV *klass, ...)
3660 ALIAS:
3661 Coro::new = 1
2133 CODE: 3662 CODE:
2134{ 3663 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2135 struct coro *coro; 3664 OUTPUT:
2136 MAGIC *mg;
2137 HV *hv;
2138 int i;
2139
2140 Newz (0, coro, 1, struct coro);
2141 coro->args = newAV ();
2142 coro->flags = CF_NEW;
2143
2144 if (coro_first) coro_first->prev = coro;
2145 coro->next = coro_first;
2146 coro_first = coro;
2147
2148 coro->hv = hv = newHV ();
2149 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2150 mg->mg_flags |= MGf_DUP;
2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2152
2153 av_extend (coro->args, items - 1);
2154 for (i = 1; i < items; i++)
2155 av_push (coro->args, newSVsv (ST (i)));
2156}
2157 OUTPUT:
2158 RETVAL 3665 RETVAL
2159
2160void
2161_set_stacklevel (...)
2162 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2164 3666
2165void 3667void
2166transfer (...) 3668transfer (...)
3669 PROTOTYPE: $$
2167 CODE: 3670 CODE:
2168 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3671 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2169 3672
2170bool 3673SV *
2171_destroy (SV *coro_sv) 3674clone (Coro::State coro)
2172 CODE: 3675 CODE:
2173 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3676{
3677#if CORO_CLONE
3678 struct coro *ncoro = coro_clone (aTHX_ coro);
3679 MAGIC *mg;
3680 /* TODO: too much duplication */
3681 ncoro->hv = newHV ();
3682 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3683 mg->mg_flags |= MGf_DUP;
3684 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3685#else
3686 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3687#endif
3688}
2174 OUTPUT: 3689 OUTPUT:
2175 RETVAL 3690 RETVAL
2176
2177void
2178_exit (int code)
2179 PROTOTYPE: $
2180 CODE:
2181 _exit (code);
2182 3691
2183int 3692int
2184cctx_stacksize (int new_stacksize = 0) 3693cctx_stacksize (int new_stacksize = 0)
2185 PROTOTYPE: ;$ 3694 PROTOTYPE: ;$
2186 CODE: 3695 CODE:
… …
2222void 3731void
2223list () 3732list ()
2224 PROTOTYPE: 3733 PROTOTYPE:
2225 PPCODE: 3734 PPCODE:
2226{ 3735{
2227 struct coro *coro; 3736 struct coro *coro;
2228 for (coro = coro_first; coro; coro = coro->next) 3737 for (coro = coro_first; coro; coro = coro->next)
2229 if (coro->hv) 3738 if (coro->hv)
2230 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3739 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2231} 3740}
2232 3741
… …
2236 eval = 1 3745 eval = 1
2237 CODE: 3746 CODE:
2238{ 3747{
2239 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3748 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2240 { 3749 {
2241 struct coro temp; 3750 struct coro *current = SvSTATE_current;
3751 struct CoroSLF slf_save;
2242 3752
2243 if (!(coro->flags & CF_RUNNING)) 3753 if (current != coro)
2244 { 3754 {
2245 PUTBACK; 3755 PUTBACK;
2246 save_perl (aTHX_ &temp); 3756 save_perl (aTHX_ current);
2247 load_perl (aTHX_ coro); 3757 load_perl (aTHX_ coro);
3758 /* the coro is most likely in an active SLF call.
3759 * while not strictly required (the code we execute is
3760 * not allowed to call any SLF functions), it's cleaner
3761 * to reinitialise the slf_frame and restore it later.
3762 * This might one day allow us to actually do SLF calls
3763 * from code executed here.
3764 */
3765 slf_save = slf_frame;
3766 slf_frame.prepare = 0;
3767 SPAGAIN;
2248 } 3768 }
2249 3769
2250 {
2251 dSP;
2252 ENTER;
2253 SAVETMPS;
2254 PUTBACK;
2255 PUSHSTACK; 3770 PUSHSTACK;
3771
2256 PUSHMARK (SP); 3772 PUSHMARK (SP);
3773 PUTBACK;
2257 3774
2258 if (ix) 3775 if (ix)
2259 eval_sv (coderef, 0); 3776 eval_sv (coderef, 0);
2260 else 3777 else
2261 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3778 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2262 3779
2263 POPSTACK; 3780 POPSTACK;
2264 SPAGAIN; 3781 SPAGAIN;
2265 FREETMPS;
2266 LEAVE;
2267 PUTBACK;
2268 }
2269 3782
2270 if (!(coro->flags & CF_RUNNING)) 3783 if (current != coro)
2271 { 3784 {
3785 PUTBACK;
3786 slf_frame = slf_save;
2272 save_perl (aTHX_ coro); 3787 save_perl (aTHX_ coro);
2273 load_perl (aTHX_ &temp); 3788 load_perl (aTHX_ current);
2274 SPAGAIN; 3789 SPAGAIN;
2275 } 3790 }
2276 } 3791 }
2277} 3792}
2278 3793
… …
2281 PROTOTYPE: $ 3796 PROTOTYPE: $
2282 ALIAS: 3797 ALIAS:
2283 is_ready = CF_READY 3798 is_ready = CF_READY
2284 is_running = CF_RUNNING 3799 is_running = CF_RUNNING
2285 is_new = CF_NEW 3800 is_new = CF_NEW
2286 is_destroyed = CF_DESTROYED 3801 is_destroyed = CF_ZOMBIE
3802 is_zombie = CF_ZOMBIE
3803 is_suspended = CF_SUSPENDED
2287 CODE: 3804 CODE:
2288 RETVAL = boolSV (coro->flags & ix); 3805 RETVAL = boolSV (coro->flags & ix);
2289 OUTPUT: 3806 OUTPUT:
2290 RETVAL 3807 RETVAL
2291 3808
2292void 3809void
2293throw (Coro::State self, SV *throw = &PL_sv_undef) 3810throw (SV *self, SV *exception = &PL_sv_undef)
2294 PROTOTYPE: $;$ 3811 PROTOTYPE: $;$
2295 CODE: 3812 CODE:
3813{
3814 struct coro *coro = SvSTATE (self);
3815 struct coro *current = SvSTATE_current;
3816 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2296 SvREFCNT_dec (self->throw); 3817 SvREFCNT_dec (*exceptionp);
2297 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3818 SvGETMAGIC (exception);
3819 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3820
3821 api_ready (aTHX_ self);
3822}
2298 3823
2299void 3824void
2300api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3825api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2301 PROTOTYPE: $;$ 3826 PROTOTYPE: $;$
2302 C_ARGS: aTHX_ coro, flags 3827 C_ARGS: aTHX_ coro, flags
2303 3828
2304SV * 3829SV *
2305has_cctx (Coro::State coro) 3830has_cctx (Coro::State coro)
2306 PROTOTYPE: $ 3831 PROTOTYPE: $
2307 CODE: 3832 CODE:
2308 RETVAL = boolSV (!!coro->cctx); 3833 /* maybe manage the running flag differently */
3834 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2309 OUTPUT: 3835 OUTPUT:
2310 RETVAL 3836 RETVAL
2311 3837
2312int 3838int
2313is_traced (Coro::State coro) 3839is_traced (Coro::State coro)
… …
2333 3859
2334void 3860void
2335force_cctx () 3861force_cctx ()
2336 PROTOTYPE: 3862 PROTOTYPE:
2337 CODE: 3863 CODE:
2338 struct coro *coro = SvSTATE (coro_current);
2339 coro->cctx->idle_sp = 0; 3864 cctx_current->idle_sp = 0;
2340 3865
2341void 3866void
2342swap_defsv (Coro::State self) 3867swap_defsv (Coro::State self)
2343 PROTOTYPE: $ 3868 PROTOTYPE: $
2344 ALIAS: 3869 ALIAS:
… …
2352 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3877 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2353 3878
2354 SV *tmp = *src; *src = *dst; *dst = tmp; 3879 SV *tmp = *src; *src = *dst; *dst = tmp;
2355 } 3880 }
2356 3881
3882void
3883cancel (Coro::State self)
3884 CODE:
3885 coro_state_destroy (aTHX_ self);
3886
3887SV *
3888enable_times (int enabled = enable_times)
3889 CODE:
3890{
3891 RETVAL = boolSV (enable_times);
3892
3893 if (enabled != enable_times)
3894 {
3895 enable_times = enabled;
3896
3897 coro_times_update ();
3898 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3899 }
3900}
3901 OUTPUT:
3902 RETVAL
3903
3904void
3905times (Coro::State self)
3906 PPCODE:
3907{
3908 struct coro *current = SvSTATE (coro_current);
3909
3910 if (ecb_expect_false (current == self))
3911 {
3912 coro_times_update ();
3913 coro_times_add (SvSTATE (coro_current));
3914 }
3915
3916 EXTEND (SP, 2);
3917 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3918 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3919
3920 if (ecb_expect_false (current == self))
3921 coro_times_sub (SvSTATE (coro_current));
3922}
3923
3924void
3925swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3926 CODE:
3927{
3928 struct coro *current = SvSTATE_current;
3929
3930 if (current == coro)
3931 SWAP_SVS (current);
3932
3933 if (!coro->swap_sv)
3934 coro->swap_sv = newAV ();
3935
3936 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3937 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3938
3939 if (current == coro)
3940 SWAP_SVS (current);
3941}
3942
3943
2357MODULE = Coro::State PACKAGE = Coro 3944MODULE = Coro::State PACKAGE = Coro
2358 3945
2359BOOT: 3946BOOT:
2360{ 3947{
2361 int i; 3948 if (SVt_LAST > 32)
3949 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2362 3950
2363 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2364 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3951 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2365 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3952 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2366 3953 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2367 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3954 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2368 SvREADONLY_on (coro_current); 3955 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3956 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3957 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3958 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3959
3960 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3961 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3962 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3963 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2369 3964
2370 coro_stash = gv_stashpv ("Coro", TRUE); 3965 coro_stash = gv_stashpv ("Coro", TRUE);
2371 3966
2372 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3967 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2373 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3968 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2374 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3969 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2375 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3970 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2376 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3971 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2377 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3972 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2378
2379 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2380 coro_ready[i] = newAV ();
2381 3973
2382 { 3974 {
2383 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3975 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2384 3976
2385 coroapi.schedule = api_schedule; 3977 coroapi.schedule = api_schedule;
3978 coroapi.schedule_to = api_schedule_to;
2386 coroapi.cede = api_cede; 3979 coroapi.cede = api_cede;
2387 coroapi.cede_notself = api_cede_notself; 3980 coroapi.cede_notself = api_cede_notself;
2388 coroapi.ready = api_ready; 3981 coroapi.ready = api_ready;
2389 coroapi.is_ready = api_is_ready; 3982 coroapi.is_ready = api_is_ready;
2390 coroapi.nready = coro_nready; 3983 coroapi.nready = coro_nready;
2391 coroapi.current = coro_current; 3984 coroapi.current = coro_current;
2392 3985
3986 coroapi.enterleave_hook = api_enterleave_hook;
3987 coroapi.enterleave_unhook = api_enterleave_unhook;
3988 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
3989
2393 GCoroAPI = &coroapi; 3990 /*GCoroAPI = &coroapi;*/
2394 sv_setiv (sv, (IV)&coroapi); 3991 sv_setiv (sv, (IV)&coroapi);
2395 SvREADONLY_on (sv); 3992 SvREADONLY_on (sv);
2396 } 3993 }
2397} 3994}
2398 3995
3996SV *
3997async (...)
3998 PROTOTYPE: &@
3999 CODE:
4000 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4001 api_ready (aTHX_ RETVAL);
4002 OUTPUT:
4003 RETVAL
4004
4005void
4006_destroy (Coro::State coro)
4007 CODE:
4008 /* used by the manager thread */
4009 coro_state_destroy (aTHX_ coro);
4010
4011void
4012on_destroy (Coro::State coro, SV *cb)
4013 CODE:
4014 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4015
4016void
4017join (...)
4018 CODE:
4019 CORO_EXECUTE_SLF_XS (slf_init_join);
4020
4021void
4022terminate (...)
4023 CODE:
4024 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4025
4026void
4027cancel (...)
4028 CODE:
4029 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4030
4031int
4032safe_cancel (Coro::State self, ...)
4033 C_ARGS: aTHX_ self, &ST (1), items - 1
4034
2399void 4035void
2400schedule (...) 4036schedule (...)
2401 CODE: 4037 CODE:
2402 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items); 4038 CORO_EXECUTE_SLF_XS (slf_init_schedule);
4039
4040void
4041schedule_to (...)
4042 CODE:
4043 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4044
4045void
4046cede_to (...)
4047 CODE:
4048 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2403 4049
2404void 4050void
2405cede (...) 4051cede (...)
2406 CODE: 4052 CODE:
2407 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items); 4053 CORO_EXECUTE_SLF_XS (slf_init_cede);
2408 4054
2409void 4055void
2410cede_notself (...) 4056cede_notself (...)
2411 CODE: 4057 CODE:
2412 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items); 4058 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2413 4059
2414void 4060void
2415_set_current (SV *current) 4061_set_current (SV *current)
2416 PROTOTYPE: $ 4062 PROTOTYPE: $
2417 CODE: 4063 CODE:
2418 SvREFCNT_dec (SvRV (coro_current)); 4064 SvREFCNT_dec_NN (SvRV (coro_current));
2419 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4065 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2420 4066
2421void 4067void
2422_set_readyhook (SV *hook) 4068_set_readyhook (SV *hook)
2423 PROTOTYPE: $ 4069 PROTOTYPE: $
2424 CODE: 4070 CODE:
2425 LOCK;
2426 SvREFCNT_dec (coro_readyhook); 4071 SvREFCNT_dec (coro_readyhook);
4072 SvGETMAGIC (hook);
4073 if (SvOK (hook))
4074 {
2427 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4075 coro_readyhook = newSVsv (hook);
2428 UNLOCK; 4076 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4077 }
4078 else
4079 {
4080 coro_readyhook = 0;
4081 CORO_READYHOOK = 0;
4082 }
2429 4083
2430int 4084int
2431prio (Coro::State coro, int newprio = 0) 4085prio (Coro::State coro, int newprio = 0)
2432 PROTOTYPE: $;$ 4086 PROTOTYPE: $;$
2433 ALIAS: 4087 ALIAS:
… …
2439 if (items > 1) 4093 if (items > 1)
2440 { 4094 {
2441 if (ix) 4095 if (ix)
2442 newprio = coro->prio - newprio; 4096 newprio = coro->prio - newprio;
2443 4097
2444 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4098 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2445 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4099 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2446 4100
2447 coro->prio = newprio; 4101 coro->prio = newprio;
2448 } 4102 }
2449} 4103}
2450 OUTPUT: 4104 OUTPUT:
… …
2464 CODE: 4118 CODE:
2465 RETVAL = coro_nready; 4119 RETVAL = coro_nready;
2466 OUTPUT: 4120 OUTPUT:
2467 RETVAL 4121 RETVAL
2468 4122
2469# for async_pool speedup
2470void 4123void
2471_pool_1 (SV *cb) 4124suspend (Coro::State self)
4125 PROTOTYPE: $
2472 CODE: 4126 CODE:
2473{ 4127 self->flags |= CF_SUSPENDED;
2474 struct coro *coro = SvSTATE (coro_current);
2475 HV *hv = (HV *)SvRV (coro_current);
2476 AV *defav = GvAV (PL_defgv);
2477 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2478 AV *invoke_av;
2479 int i, len;
2480 4128
2481 if (!invoke) 4129void
4130resume (Coro::State self)
4131 PROTOTYPE: $
4132 CODE:
4133 self->flags &= ~CF_SUSPENDED;
4134
4135void
4136_pool_handler (...)
4137 CODE:
4138 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4139
4140void
4141async_pool (SV *cv, ...)
4142 PROTOTYPE: &@
4143 PPCODE:
4144{
4145 HV *hv = (HV *)av_pop (av_async_pool);
4146 AV *av = newAV ();
4147 SV *cb = ST (0);
4148 int i;
4149
4150 av_extend (av, items - 2);
4151 for (i = 1; i < items; ++i)
4152 av_push (av, SvREFCNT_inc_NN (ST (i)));
4153
4154 if ((SV *)hv == &PL_sv_undef)
2482 { 4155 {
2483 SV *old = PL_diehook; 4156 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2484 PL_diehook = 0; 4157 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2485 SvREFCNT_dec (old); 4158 SvREFCNT_dec_NN (sv);
2486 croak ("\3async_pool terminate\2\n");
2487 } 4159 }
2488 4160
2489 SvREFCNT_dec (coro->saved_deffh);
2490 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2491
2492 hv_store (hv, "desc", sizeof ("desc") - 1,
2493 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2494
2495 invoke_av = (AV *)SvRV (invoke);
2496 len = av_len (invoke_av);
2497
2498 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2499
2500 if (len > 0)
2501 { 4161 {
2502 av_fill (defav, len - 1); 4162 struct coro *coro = SvSTATE_hv (hv);
2503 for (i = 0; i < len; ++i) 4163
2504 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4164 assert (!coro->invoke_cb);
4165 assert (!coro->invoke_av);
4166 coro->invoke_cb = SvREFCNT_inc (cb);
4167 coro->invoke_av = av;
2505 } 4168 }
2506}
2507 4169
2508void 4170 api_ready (aTHX_ (SV *)hv);
2509_pool_2 (SV *cb) 4171
4172 if (GIMME_V != G_VOID)
4173 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4174 else
4175 SvREFCNT_dec_NN (hv);
4176}
4177
4178SV *
4179rouse_cb ()
4180 PROTOTYPE:
2510 CODE: 4181 CODE:
2511{ 4182 RETVAL = coro_new_rouse_cb (aTHX);
2512 struct coro *coro = SvSTATE (coro_current);
2513
2514 sv_setsv (cb, &PL_sv_undef);
2515
2516 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2517 coro->saved_deffh = 0;
2518
2519 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2520 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2521 {
2522 SV *old = PL_diehook;
2523 PL_diehook = 0;
2524 SvREFCNT_dec (old);
2525 croak ("\3async_pool terminate\2\n");
2526 }
2527
2528 av_clear (GvAV (PL_defgv));
2529 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2530 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2531
2532 coro->prio = 0;
2533
2534 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2535 api_trace (aTHX_ coro_current, 0);
2536
2537 av_push (av_async_pool, newSVsv (coro_current));
2538}
2539
2540#if 0
2541
2542void
2543_generator_call (...)
2544 PROTOTYPE: @
2545 PPCODE:
2546 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2547 xxxx
2548 abort ();
2549
2550SV *
2551gensub (SV *sub, ...)
2552 PROTOTYPE: &;@
2553 CODE:
2554{
2555 struct coro *coro;
2556 MAGIC *mg;
2557 CV *xcv;
2558 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2559 int i;
2560
2561 CvGV (ncv) = CvGV (cv);
2562 CvFILE (ncv) = CvFILE (cv);
2563
2564 Newz (0, coro, 1, struct coro);
2565 coro->args = newAV ();
2566 coro->flags = CF_NEW;
2567
2568 av_extend (coro->args, items - 1);
2569 for (i = 1; i < items; i++)
2570 av_push (coro->args, newSVsv (ST (i)));
2571
2572 CvISXSUB_on (ncv);
2573 CvXSUBANY (ncv).any_ptr = (void *)coro;
2574
2575 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2576
2577 CvXSUB (ncv) = CvXSUB (xcv);
2578 CvANON_on (ncv);
2579
2580 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2581 RETVAL = newRV_noinc ((SV *)ncv);
2582}
2583 OUTPUT: 4183 OUTPUT:
2584 RETVAL 4184 RETVAL
2585 4185
2586#endif
2587
2588
2589MODULE = Coro::State PACKAGE = Coro::AIO
2590
2591void 4186void
2592_get_state (SV *self) 4187rouse_wait (...)
2593 PROTOTYPE: $ 4188 PROTOTYPE: ;$
2594 PPCODE: 4189 PPCODE:
2595{ 4190 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2596 AV *defav = GvAV (PL_defgv);
2597 AV *av = newAV ();
2598 int i;
2599 SV *data_sv = newSV (sizeof (struct io_state));
2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2601 SvCUR_set (data_sv, sizeof (struct io_state));
2602 SvPOK_only (data_sv);
2603
2604 data->errorno = errno;
2605 data->laststype = PL_laststype;
2606 data->laststatval = PL_laststatval;
2607 data->statcache = PL_statcache;
2608
2609 av_extend (av, AvFILLp (defav) + 1 + 1);
2610
2611 for (i = 0; i <= AvFILLp (defav); ++i)
2612 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2613
2614 av_push (av, data_sv);
2615
2616 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618 api_ready (aTHX_ self);
2619}
2620 4191
2621void 4192void
2622_set_state (SV *state) 4193on_enter (SV *block)
4194 ALIAS:
4195 on_leave = 1
2623 PROTOTYPE: $ 4196 PROTOTYPE: &
2624 PPCODE:
2625{
2626 AV *av = (AV *)SvRV (state);
2627 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628 int i;
2629
2630 errno = data->errorno;
2631 PL_laststype = data->laststype;
2632 PL_laststatval = data->laststatval;
2633 PL_statcache = data->statcache;
2634
2635 EXTEND (SP, AvFILLp (av));
2636 for (i = 0; i < AvFILLp (av); ++i)
2637 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638}
2639
2640
2641MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643BOOT:
2644 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646SV *
2647_schedule (...)
2648 CODE: 4197 CODE:
2649{ 4198{
2650 static int incede; 4199 struct coro *coro = SvSTATE_current;
4200 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2651 4201
2652 api_cede_notself (aTHX); 4202 block = s_get_cv_croak (block);
2653 4203
2654 ++incede; 4204 if (!*avp)
2655 while (coro_nready >= incede && api_cede (aTHX)) 4205 *avp = newAV ();
2656 ;
2657 4206
2658 sv_setsv (sv_activity, &PL_sv_undef); 4207 av_push (*avp, SvREFCNT_inc (block));
2659 if (coro_nready >= incede)
2660 {
2661 PUSHMARK (SP);
2662 PUTBACK;
2663 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2664 SPAGAIN;
2665 }
2666 4208
2667 --incede; 4209 if (!ix)
4210 on_enterleave_call (aTHX_ block);
4211
4212 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4213 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4214 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2668} 4215}
2669 4216
2670 4217
2671MODULE = Coro::State PACKAGE = PerlIO::cede 4218MODULE = Coro::State PACKAGE = PerlIO::cede
2672 4219
2673BOOT: 4220BOOT:
2674 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4221 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2675 4222
4223
2676MODULE = Coro::State PACKAGE = Coro::Semaphore 4224MODULE = Coro::State PACKAGE = Coro::Semaphore
2677 4225
2678SV * 4226SV *
2679new (SV *klass, SV *count_ = 0) 4227new (SV *klass, SV *count = 0)
2680 CODE: 4228 CODE:
2681{ 4229{
2682 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4230 int semcnt = 1;
2683 AV *av = newAV (); 4231
2684 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4232 if (count)
2685 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4233 {
4234 SvGETMAGIC (count);
4235
4236 if (SvOK (count))
4237 semcnt = SvIV (count);
4238 }
4239
4240 RETVAL = sv_bless (
4241 coro_waitarray_new (aTHX_ semcnt),
4242 GvSTASH (CvGV (cv))
4243 );
2686} 4244}
4245 OUTPUT:
4246 RETVAL
4247
4248# helper for Coro::Channel and others
4249SV *
4250_alloc (int count)
4251 CODE:
4252 RETVAL = coro_waitarray_new (aTHX_ count);
2687 OUTPUT: 4253 OUTPUT:
2688 RETVAL 4254 RETVAL
2689 4255
2690SV * 4256SV *
2691count (SV *self) 4257count (SV *self)
… …
2697void 4263void
2698up (SV *self, int adjust = 1) 4264up (SV *self, int adjust = 1)
2699 ALIAS: 4265 ALIAS:
2700 adjust = 1 4266 adjust = 1
2701 CODE: 4267 CODE:
2702{ 4268 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2703 AV *av = (AV *)SvRV (self);
2704 SV *count_sv = AvARRAY (av)[0];
2705 IV count = SvIVX (count_sv);
2706
2707 count += ix ? adjust : 1;
2708 SvIVX (count_sv) = count;
2709
2710 /* now wake up as many waiters as possible */
2711 while (count > 0 && AvFILLp (av) >= count)
2712 {
2713 SV *cb;
2714
2715 /* swap first two elements so we can shift a waiter */
2716 AvARRAY (av)[0] = AvARRAY (av)[1];
2717 AvARRAY (av)[1] = count_sv;
2718 cb = av_shift (av);
2719
2720 if (SvOBJECT (cb))
2721 api_ready (cb);
2722 else
2723 croak ("callbacks not yet supported");
2724
2725 SvREFCNT_dec (cb);
2726 }
2727}
2728 4269
2729void 4270void
2730down (SV *self) 4271down (...)
2731 CODE: 4272 CODE:
2732 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), items); 4273 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4274
4275void
4276wait (...)
4277 CODE:
4278 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2733 4279
2734void 4280void
2735try (SV *self) 4281try (SV *self)
2736 PPCODE: 4282 PPCODE:
2737{ 4283{
… …
2749 XSRETURN_NO; 4295 XSRETURN_NO;
2750} 4296}
2751 4297
2752void 4298void
2753waiters (SV *self) 4299waiters (SV *self)
2754 CODE: 4300 PPCODE:
2755{ 4301{
2756 AV *av = (AV *)SvRV (self); 4302 AV *av = (AV *)SvRV (self);
4303 int wcount = AvFILLp (av) + 1 - 1;
2757 4304
2758 if (GIMME_V == G_SCALAR) 4305 if (GIMME_V == G_SCALAR)
2759 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4306 XPUSHs (sv_2mortal (newSViv (wcount)));
2760 else 4307 else
2761 { 4308 {
2762 int i; 4309 int i;
2763 EXTEND (SP, AvFILLp (av) + 1 - 1); 4310 EXTEND (SP, wcount);
2764 for (i = 1; i <= AvFILLp (av); ++i) 4311 for (i = 1; i <= wcount; ++i)
2765 PUSHs (newSVsv (AvARRAY (av)[i])); 4312 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2766 } 4313 }
2767} 4314}
2768 4315
4316MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4317
4318void
4319_may_delete (SV *sem, int count, unsigned int extra_refs)
4320 PPCODE:
4321{
4322 AV *av = (AV *)SvRV (sem);
4323
4324 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4325 && AvFILLp (av) == 0 /* no waiters, just count */
4326 && SvIV (AvARRAY (av)[0]) == count)
4327 XSRETURN_YES;
4328
4329 XSRETURN_NO;
4330}
4331
4332MODULE = Coro::State PACKAGE = Coro::Signal
4333
4334SV *
4335new (SV *klass)
4336 CODE:
4337 RETVAL = sv_bless (
4338 coro_waitarray_new (aTHX_ 0),
4339 GvSTASH (CvGV (cv))
4340 );
4341 OUTPUT:
4342 RETVAL
4343
4344void
4345wait (...)
4346 CODE:
4347 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4348
4349void
4350broadcast (SV *self)
4351 CODE:
4352{
4353 AV *av = (AV *)SvRV (self);
4354 coro_signal_wake (aTHX_ av, AvFILLp (av));
4355}
4356
4357void
4358send (SV *self)
4359 CODE:
4360{
4361 AV *av = (AV *)SvRV (self);
4362
4363 if (AvFILLp (av))
4364 coro_signal_wake (aTHX_ av, 1);
4365 else
4366 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4367}
4368
4369IV
4370awaited (SV *self)
4371 CODE:
4372 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4373 OUTPUT:
4374 RETVAL
4375
4376
4377MODULE = Coro::State PACKAGE = Coro::AnyEvent
4378
4379BOOT:
4380 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4381
4382void
4383_schedule (...)
4384 CODE:
4385{
4386 static int incede;
4387
4388 api_cede_notself (aTHX);
4389
4390 ++incede;
4391 while (coro_nready >= incede && api_cede (aTHX))
4392 ;
4393
4394 sv_setsv (sv_activity, &PL_sv_undef);
4395 if (coro_nready >= incede)
4396 {
4397 PUSHMARK (SP);
4398 PUTBACK;
4399 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4400 }
4401
4402 --incede;
4403}
4404
4405
4406MODULE = Coro::State PACKAGE = Coro::AIO
4407
4408void
4409_register (char *target, char *proto, SV *req)
4410 CODE:
4411{
4412 SV *req_cv = s_get_cv_croak (req);
4413 /* newXSproto doesn't return the CV on 5.8 */
4414 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4415 sv_setpv ((SV *)slf_cv, proto);
4416 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4417}
4418
4419MODULE = Coro::State PACKAGE = Coro::Select
4420
4421void
4422patch_pp_sselect ()
4423 CODE:
4424 if (!coro_old_pp_sselect)
4425 {
4426 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4427 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4428 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4429 }
4430
4431void
4432unpatch_pp_sselect ()
4433 CODE:
4434 if (coro_old_pp_sselect)
4435 {
4436 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4437 coro_old_pp_sselect = 0;
4438 }
4439
4440MODULE = Coro::State PACKAGE = Coro::Util
4441
4442void
4443_exit (int code)
4444 CODE:
4445 _exit (code);
4446
4447NV
4448time ()
4449 CODE:
4450 RETVAL = nvtime (aTHX);
4451 OUTPUT:
4452 RETVAL
4453
4454NV
4455gettimeofday ()
4456 PPCODE:
4457{
4458 UV tv [2];
4459 u2time (aTHX_ tv);
4460 EXTEND (SP, 2);
4461 PUSHs (sv_2mortal (newSVuv (tv [0])));
4462 PUSHs (sv_2mortal (newSVuv (tv [1])));
4463}
4464

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