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Comparing Coro/Coro/State.xs (file contents):
Revision 1.280 by root, Sun Nov 16 09:43:18 2008 UTC vs.
Revision 1.456 by root, Sun Mar 6 06:26:21 2016 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SvREFCNT_dec_NN
28 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
29#endif
30
31#ifndef SvREFCNT_inc_NN
32 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
33#endif
34
35#ifndef SVs_PADSTALE
36# define SVs_PADSTALE 0
37#endif
38
39#ifdef PadARRAY
40# define NEWPADAPI 1
41# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
42#else
43typedef AV PADNAMELIST;
44# if !PERL_VERSION_ATLEAST(5,8,0)
45typedef AV PADLIST;
46typedef AV PAD;
47# endif
48# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
49# define PadlistMAX(pl) AvFILLp (pl)
50# define PadlistNAMES(pl) (*PadlistARRAY (pl))
51# define PadARRAY AvARRAY
52# define PadMAX AvFILLp
53# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
54#endif
55#ifndef PadnamelistREFCNT
56# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
57#endif
58#ifndef PadnamelistREFCNT_dec
59# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
60#endif
61
62/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
63/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
64#if PERL_VERSION_ATLEAST(5,19,0)
65# define SVt_BIND SVt_IV
66#endif
67
68#if defined(_WIN32)
69# undef HAS_GETTIMEOFDAY
18# undef setjmp 70# undef setjmp
19# undef longjmp 71# undef longjmp
20# undef _exit 72# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 73# define setjmp _setjmp /* deep magic */
22#else 74#else
23# include <inttypes.h> /* most portable stdint.h */ 75# include <inttypes.h> /* most portable stdint.h */
24#endif 76#endif
25 77
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 78/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 79static int cctx_max_idle = 4;
55 80
56#define PERL_VERSION_ATLEAST(a,b,c) \ 81#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 82# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD
108#endif
109
110#ifndef CORO_STACKGUARD
111# define CORO_STACKGUARD 0
112#endif 83#endif
113 84
114/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 88#endif
118 89
119/* The next macros try to return the current stack pointer, in an as 90/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 91 * portable way as possible. */
121#if __GNUC__ >= 4 92#if __GNUC__ >= 4
93# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 94# define STACKLEVEL __builtin_frame_address (0)
123#else 95#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 96# define dSTACKLEVEL volatile void *stacklevel
97# define STACKLEVEL ((void *)&stacklevel)
125#endif 98#endif
126 99
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 100#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 101
144#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
145 104
146#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
147# if CORO_PTHREAD 106# if CORO_PTHREAD
148static void *coro_thx; 107static void *coro_thx;
149# endif 108# endif
150#endif 109#endif
151 110
152/* helper storage struct for Coro::AIO */ 111#ifdef __linux
153struct io_state 112# include <time.h> /* for timespec */
154{ 113# include <syscall.h> /* for SYS_* */
155 AV *res; 114# ifdef SYS_clock_gettime
156 int errorno; 115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 116# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 118# endif
160}; 119#endif
161 120
162static 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);
163 128
164static U32 cctx_gen; 129static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 130static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 131static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 132static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 133static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 134static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 135static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static 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 */
172 140
173static GV *irsgv; /* $/ */ 141static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 142static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 143static SV *rv_diehook;
176static SV *rv_warnhook; 144static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */
178 145
179/* async_pool helper stuff */ 146/* async_pool helper stuff */
180static SV *sv_pool_rss; 147static SV *sv_pool_rss;
181static SV *sv_pool_size; 148static SV *sv_pool_size;
149static SV *sv_async_pool_idle; /* description string */
182static AV *av_async_pool; 150static AV *av_async_pool; /* idle pool */
151static SV *sv_Coro; /* class string */
152static CV *cv_pool_handler;
183 153
184/* Coro::AnyEvent */ 154/* Coro::AnyEvent */
185static SV *sv_activity; 155static SV *sv_activity;
186 156
157/* enable processtime/realtime profiling */
158static char enable_times;
159typedef U32 coro_ts[2];
160static coro_ts time_real, time_cpu;
161static char times_valid;
162
187static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
188static int cctx_count, cctx_idle; 164static int cctx_count, cctx_idle;
189 165
190enum { 166enum
167{
191 CC_MAPPED = 0x01, 168 CC_MAPPED = 0x01,
192 CC_NOREUSE = 0x02, /* throw this away after tracing */ 169 CC_NOREUSE = 0x02, /* throw this away after tracing */
193 CC_TRACE = 0x04, 170 CC_TRACE = 0x04,
194 CC_TRACE_SUB = 0x08, /* trace sub calls */ 171 CC_TRACE_SUB = 0x08, /* trace sub calls */
195 CC_TRACE_LINE = 0x10, /* trace each statement */ 172 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
200typedef struct coro_cctx 177typedef struct coro_cctx
201{ 178{
202 struct coro_cctx *next; 179 struct coro_cctx *next;
203 180
204 /* the stack */ 181 /* the stack */
205 void *sptr; 182 struct coro_stack stack;
206 size_t ssize;
207 183
208 /* cpu state */ 184 /* cpu state */
209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 185 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
186#ifndef NDEBUG
210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 187 JMPENV *idle_te; /* same as idle_sp, but for top_env */
188#endif
211 JMPENV *top_env; 189 JMPENV *top_env;
212 coro_context cctx; 190 coro_context cctx;
213 191
214 U32 gen; 192 U32 gen;
215#if CORO_USE_VALGRIND 193#if CORO_USE_VALGRIND
216 int valgrind_id; 194 int valgrind_id;
217#endif 195#endif
218 unsigned char flags; 196 unsigned char flags;
219} coro_cctx; 197} coro_cctx;
220 198
199static coro_cctx *cctx_current; /* the currently running cctx */
200
201/*****************************************************************************/
202
203static MGVTBL coro_state_vtbl;
204
221enum { 205enum
206{
222 CF_RUNNING = 0x0001, /* coroutine is running */ 207 CF_RUNNING = 0x0001, /* coroutine is running */
223 CF_READY = 0x0002, /* coroutine is ready */ 208 CF_READY = 0x0002, /* coroutine is ready */
224 CF_NEW = 0x0004, /* has never been switched to */ 209 CF_NEW = 0x0004, /* has never been switched to */
225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 210 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
211 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
212 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
226}; 213};
227 214
228/* the structure where most of the perl state is stored, overlaid on the cxstack */ 215/* the structure where most of the perl state is stored, overlaid on the cxstack */
229typedef struct 216typedef struct
230{ 217{
231 SV *defsv;
232 AV *defav;
233 SV *errsv;
234 SV *irsgv;
235#define VAR(name,type) type name; 218 #define VARx(name,expr,type) type name;
236# include "state.h" 219 #include "state.h"
237#undef VAR
238} perl_slots; 220} perl_slots;
239 221
222/* how many context stack entries do we need for perl_slots */
240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 223#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
241 224
242/* this is a structure representing a perl-level coroutine */ 225/* this is a structure representing a perl-level coroutine */
243struct coro { 226struct coro
227{
244 /* the C coroutine allocated to this perl coroutine, if any */ 228 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 229 coro_cctx *cctx;
246 230
247 /* process data */ 231 /* ready queue */
232 struct coro *next_ready;
233
234 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 235 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 236 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 237 perl_slots *slot; /* basically the saved sp */
251 238
239 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 240 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 241 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 242 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
257 243
258 /* statistics */ 244 /* statistics */
259 int usecount; /* number of transfers to this coro */ 245 int usecount; /* number of transfers to this coro */
260 246
261 /* coro process data */ 247 /* coro process data */
262 int prio; 248 int prio;
263 SV *throw; /* exception to be thrown */ 249 SV *except; /* exception to be thrown */
250 SV *rouse_cb; /* last rouse callback */
251 AV *on_destroy; /* callbacks or coros to notify on destroy */
252 AV *status; /* the exit status list */
264 253
265 /* async_pool */ 254 /* async_pool */
266 SV *saved_deffh; 255 SV *saved_deffh;
256 SV *invoke_cb;
257 AV *invoke_av;
258
259 /* on_enter/on_leave */
260 AV *on_enter; AV *on_enter_xs;
261 AV *on_leave; AV *on_leave_xs;
262
263 /* swap_sv */
264 AV *swap_sv;
265
266 /* times */
267 coro_ts t_cpu, t_real;
267 268
268 /* linked list */ 269 /* linked list */
269 struct coro *next, *prev; 270 struct coro *next, *prev;
270}; 271};
271 272
272typedef struct coro *Coro__State; 273typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 274typedef struct coro *Coro__State_or_hashref;
274 275
276/* the following variables are effectively part of the perl context */
277/* and get copied between struct coro and these variables */
278/* the main reason we don't support windows process emulation */
275static struct CoroSLF slf_frame; /* the current slf frame */ 279static struct CoroSLF slf_frame; /* the current slf frame */
276 280
277/** Coro ********************************************************************/ 281/** Coro ********************************************************************/
278 282
279#define PRIO_MAX 3 283#define CORO_PRIO_MAX 3
280#define PRIO_HIGH 1 284#define CORO_PRIO_HIGH 1
281#define PRIO_NORMAL 0 285#define CORO_PRIO_NORMAL 0
282#define PRIO_LOW -1 286#define CORO_PRIO_LOW -1
283#define PRIO_IDLE -3 287#define CORO_PRIO_IDLE -3
284#define PRIO_MIN -4 288#define CORO_PRIO_MIN -4
285 289
286/* for Coro.pm */ 290/* for Coro.pm */
287static SV *coro_current; 291static SV *coro_current;
288static SV *coro_readyhook; 292static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 293static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
294static CV *cv_coro_run;
290static struct coro *coro_first; 295static struct coro *coro_first;
291#define coro_nready coroapi.nready 296#define coro_nready coroapi.nready
292 297
298/** JIT *********************************************************************/
299
300#if CORO_JIT
301 /* APPLE doesn't have mmap though */
302 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
303 #ifndef CORO_JIT_TYPE
304 #if ECB_AMD64 && CORO_JIT_UNIXY
305 #define CORO_JIT_TYPE "amd64-unix"
306 #elif __i386 && CORO_JIT_UNIXY
307 #define CORO_JIT_TYPE "x86-unix"
308 #endif
309 #endif
310#endif
311
312#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
313 #undef CORO_JIT
314#endif
315
316#if CORO_JIT
317 typedef void (*load_save_perl_slots_type)(perl_slots *);
318 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
319#endif
320
321/** Coro::Select ************************************************************/
322
323static OP *(*coro_old_pp_sselect) (pTHX);
324static SV *coro_select_select;
325
326/* horrible hack, but if it works... */
327static OP *
328coro_pp_sselect (pTHX)
329{
330 dSP;
331 PUSHMARK (SP - 4); /* fake argument list */
332 XPUSHs (coro_select_select);
333 PUTBACK;
334
335 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
336 PL_op->op_flags |= OPf_STACKED;
337 PL_op->op_private = 0;
338 return PL_ppaddr [OP_ENTERSUB](aTHX);
339}
340
341/** time stuff **************************************************************/
342
343#ifdef HAS_GETTIMEOFDAY
344
345ecb_inline void
346coro_u2time (pTHX_ UV ret[2])
347{
348 struct timeval tv;
349 gettimeofday (&tv, 0);
350
351 ret [0] = tv.tv_sec;
352 ret [1] = tv.tv_usec;
353}
354
355ecb_inline double
356coro_nvtime (void)
357{
358 struct timeval tv;
359 gettimeofday (&tv, 0);
360
361 return tv.tv_sec + tv.tv_usec * 1e-6;
362}
363
364ecb_inline void
365time_init (pTHX)
366{
367 nvtime = coro_nvtime;
368 u2time = coro_u2time;
369}
370
371#else
372
373ecb_inline void
374time_init (pTHX)
375{
376 SV **svp;
377
378 require_pv ("Time/HiRes.pm");
379
380 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
381
382 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
383 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
384
385 nvtime = INT2PTR (double (*)(), SvIV (*svp));
386
387 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
388 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
389}
390
391#endif
392
293/** lowlevel stuff **********************************************************/ 393/** lowlevel stuff **********************************************************/
294 394
295static SV * 395static SV * ecb_noinline
296coro_get_sv (pTHX_ const char *name, int create) 396coro_get_sv (pTHX_ const char *name, int create)
297{ 397{
298#if PERL_VERSION_ATLEAST (5,10,0) 398#if PERL_VERSION_ATLEAST (5,10,0)
299 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 399 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
300 get_sv (name, create); 400 get_sv (name, create);
301#endif 401#endif
302 return get_sv (name, create); 402 return get_sv (name, create);
303} 403}
304 404
305static AV * 405static AV * ecb_noinline
306coro_get_av (pTHX_ const char *name, int create) 406coro_get_av (pTHX_ const char *name, int create)
307{ 407{
308#if PERL_VERSION_ATLEAST (5,10,0) 408#if PERL_VERSION_ATLEAST (5,10,0)
309 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 409 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
310 get_av (name, create); 410 get_av (name, create);
311#endif 411#endif
312 return get_av (name, create); 412 return get_av (name, create);
313} 413}
314 414
315static HV * 415static HV * ecb_noinline
316coro_get_hv (pTHX_ const char *name, int create) 416coro_get_hv (pTHX_ const char *name, int create)
317{ 417{
318#if PERL_VERSION_ATLEAST (5,10,0) 418#if PERL_VERSION_ATLEAST (5,10,0)
319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 419 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
320 get_hv (name, create); 420 get_hv (name, create);
321#endif 421#endif
322 return get_hv (name, create); 422 return get_hv (name, create);
323} 423}
324 424
325static AV * 425ecb_inline void
426coro_times_update (void)
427{
428#ifdef coro_clock_gettime
429 struct timespec ts;
430
431 ts.tv_sec = ts.tv_nsec = 0;
432 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
433 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
434
435 ts.tv_sec = ts.tv_nsec = 0;
436 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
437 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
438#else
439 dTHX;
440 UV tv[2];
441
442 u2time (aTHX_ tv);
443 time_real [0] = tv [0];
444 time_real [1] = tv [1] * 1000;
445#endif
446}
447
448ecb_inline void
449coro_times_add (struct coro *c)
450{
451 c->t_real [1] += time_real [1];
452 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
453 c->t_real [0] += time_real [0];
454
455 c->t_cpu [1] += time_cpu [1];
456 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
457 c->t_cpu [0] += time_cpu [0];
458}
459
460ecb_inline void
461coro_times_sub (struct coro *c)
462{
463 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
464 c->t_real [1] -= time_real [1];
465 c->t_real [0] -= time_real [0];
466
467 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
468 c->t_cpu [1] -= time_cpu [1];
469 c->t_cpu [0] -= time_cpu [0];
470}
471
472/*****************************************************************************/
473/* magic glue */
474
475#define CORO_MAGIC_type_cv 26
476#define CORO_MAGIC_type_state PERL_MAGIC_ext
477
478#define CORO_MAGIC_NN(sv, type) \
479 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
480 ? SvMAGIC (sv) \
481 : mg_find (sv, type))
482
483#define CORO_MAGIC(sv, type) \
484 (ecb_expect_true (SvMAGIC (sv)) \
485 ? CORO_MAGIC_NN (sv, type) \
486 : 0)
487
488#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
489#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
490
491ecb_inline MAGIC *
492SvSTATEhv_p (pTHX_ SV *coro)
493{
494 MAGIC *mg;
495
496 if (ecb_expect_true (
497 SvTYPE (coro) == SVt_PVHV
498 && (mg = CORO_MAGIC_state (coro))
499 && mg->mg_virtual == &coro_state_vtbl
500 ))
501 return mg;
502
503 return 0;
504}
505
506ecb_inline struct coro *
507SvSTATE_ (pTHX_ SV *coro_sv)
508{
509 MAGIC *mg;
510
511 if (SvROK (coro_sv))
512 coro_sv = SvRV (coro_sv);
513
514 mg = SvSTATEhv_p (aTHX_ coro_sv);
515 if (!mg)
516 croak ("Coro::State object required");
517
518 return (struct coro *)mg->mg_ptr;
519}
520
521#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
522
523/* faster than SvSTATE, but expects a coroutine hv */
524#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
525#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
526
527/*****************************************************************************/
528/* padlist management and caching */
529
530ecb_inline PADLIST *
326coro_clone_padlist (pTHX_ CV *cv) 531coro_derive_padlist (pTHX_ CV *cv)
327{ 532{
328 AV *padlist = CvPADLIST (cv); 533 PADLIST *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 534 PADLIST *newpadlist;
535 PADNAMELIST *padnames;
536 PAD *newpad;
537 PADOFFSET off = PadlistMAX (padlist) + 1;
330 538
331 newpadlist = newAV (); 539#if NEWPADAPI
540
541 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
542 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
543 while (!PadlistARRAY (padlist)[off - 1])
544 --off;
545
546 Perl_pad_push (aTHX_ padlist, off);
547
548 newpad = PadlistARRAY (padlist)[off];
549 PadlistARRAY (padlist)[off] = 0;
550
551#else
552
553#if PERL_VERSION_ATLEAST (5,10,0)
554 Perl_pad_push (aTHX_ padlist, off);
555#else
556 Perl_pad_push (aTHX_ padlist, off, 1);
557#endif
558
559 newpad = PadlistARRAY (padlist)[off];
560 PadlistMAX (padlist) = off - 1;
561
562#endif
563
564 newPADLIST (newpadlist);
565#if !PERL_VERSION_ATLEAST(5,15,3)
566 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
332 AvREAL_off (newpadlist); 567 AvREAL_off (newpadlist);
333#if PERL_VERSION_ATLEAST (5,10,0)
334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
335#else
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 568#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist);
340 569
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 570 /* Already extended to 2 elements by newPADLIST. */
342 av_store (newpadlist, 1, (SV *)newpad); 571 PadlistMAX (newpadlist) = 1;
572
573 padnames = PadlistNAMES (padlist);
574 ++PadnamelistREFCNT (padnames);
575 PadlistNAMES (newpadlist) = padnames;
576
577 PadlistARRAY (newpadlist)[1] = newpad;
343 578
344 return newpadlist; 579 return newpadlist;
345} 580}
346 581
347static void 582ecb_inline void
348free_padlist (pTHX_ AV *padlist) 583free_padlist (pTHX_ PADLIST *padlist)
349{ 584{
350 /* may be during global destruction */ 585 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 586 if (!IN_DESTRUCT)
352 { 587 {
353 I32 i = AvFILLp (padlist); 588 I32 i = PadlistMAX (padlist);
354 while (i >= 0) 589
590 while (i > 0) /* special-case index 0 */
355 { 591 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 592 /* we try to be extra-careful here */
593 PAD *pad = PadlistARRAY (padlist)[i--];
594
357 if (svp) 595 if (pad)
358 { 596 {
359 SV *sv; 597 I32 j = PadMAX (pad);
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 598
599 while (j >= 0)
361 SvREFCNT_dec (sv); 600 SvREFCNT_dec (PadARRAY (pad)[j--]);
362 601
602 PadMAX (pad) = -1;
363 SvREFCNT_dec (*svp); 603 SvREFCNT_dec (pad);
364 } 604 }
365 } 605 }
366 606
607 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
608
609#if NEWPADAPI
610 Safefree (PadlistARRAY (padlist));
611 Safefree (padlist);
612#else
613 AvFILLp (padlist) = -1;
614 AvREAL_off (padlist);
367 SvREFCNT_dec ((SV*)padlist); 615 SvREFCNT_dec ((SV*)padlist);
616#endif
368 } 617 }
369} 618}
370 619
371static int 620static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 621coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 622{
374 AV *padlist; 623 PADLIST *padlist;
375 AV *av = (AV *)mg->mg_obj; 624 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
625 size_t len = *(size_t *)mg->mg_ptr;
376 626
377 /* casting is fun. */ 627 /* perl manages to free our internal AV and _then_ call us */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 628 if (IN_DESTRUCT)
629 return 0;
630
631 while (len--)
379 free_padlist (aTHX_ padlist); 632 free_padlist (aTHX_ padlists[len]);
380
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 633
383 return 0; 634 return 0;
384} 635}
385
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 636
389static MGVTBL coro_cv_vtbl = { 637static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 638 0, 0, 0, 0,
391 coro_cv_free 639 coro_cv_free
392}; 640};
393 641
394#define CORO_MAGIC(sv, type) \
395 SvMAGIC (sv) \
396 ? SvMAGIC (sv)->mg_type == type \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0
400
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro)
406{
407 HV *stash;
408 MAGIC *mg;
409
410 if (SvROK (coro))
411 coro = SvRV (coro);
412
413 if (expect_false (SvTYPE (coro) != SVt_PVHV))
414 croak ("Coro::State object required");
415
416 stash = SvSTASH (coro);
417 if (expect_false (stash != coro_stash && stash != coro_state_stash))
418 {
419 /* very slow, but rare, check */
420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
421 croak ("Coro::State object required");
422 }
423
424 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr;
426}
427
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429
430/* the next two functions merely cache the padlists */ 642/* the next two functions merely cache the padlists */
431static void 643ecb_inline void
432get_padlist (pTHX_ CV *cv) 644get_padlist (pTHX_ CV *cv)
433{ 645{
434 MAGIC *mg = CORO_MAGIC_cv (cv); 646 MAGIC *mg = CORO_MAGIC_cv (cv);
435 AV *av; 647 size_t *lenp;
436 648
437 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 649 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
438 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 650 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
439 else 651 else
440 { 652 {
441#if CORO_PREFER_PERL_FUNCTIONS 653#if CORO_PREFER_PERL_FUNCTIONS
442 /* this is probably cleaner? but also slower! */ 654 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */ 655 /* in practise, it seems to be less stable */
444 CV *cp = Perl_cv_clone (cv); 656 CV *cp = Perl_cv_clone (aTHX_ cv);
445 CvPADLIST (cv) = CvPADLIST (cp); 657 CvPADLIST (cv) = CvPADLIST (cp);
446 CvPADLIST (cp) = 0; 658 CvPADLIST (cp) = 0;
447 SvREFCNT_dec (cp); 659 SvREFCNT_dec (cp);
448#else 660#else
449 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 661 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
450#endif 662#endif
451 } 663 }
452} 664}
453 665
454static void 666ecb_inline void
455put_padlist (pTHX_ CV *cv) 667put_padlist (pTHX_ CV *cv)
456{ 668{
457 MAGIC *mg = CORO_MAGIC_cv (cv); 669 MAGIC *mg = CORO_MAGIC_cv (cv);
458 AV *av;
459 670
460 if (expect_false (!mg)) 671 if (ecb_expect_false (!mg))
672 {
461 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 673 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
674 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
675 mg->mg_len = 1; /* so mg_free frees mg_ptr */
676 }
677 else
678 Renew (mg->mg_ptr,
679 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
680 char);
462 681
463 av = (AV *)mg->mg_obj; 682 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
464
465 if (expect_false (AvFILLp (av) >= AvMAX (av)))
466 av_extend (av, AvMAX (av) + 1);
467
468 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
469} 683}
470 684
471/** load & save, init *******************************************************/ 685/** load & save, init *******************************************************/
686
687ecb_inline void
688swap_sv (SV *a, SV *b)
689{
690 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
691 SV tmp;
692
693 /* swap sv_any */
694 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
695
696 /* swap sv_flags */
697 SvFLAGS (&tmp) = SvFLAGS (a);
698 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
699 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
700
701#if PERL_VERSION_ATLEAST (5,10,0)
702 /* perl 5.10 and later complicates this _quite_ a bit, but it also
703 * is much faster, so no quarrels here. alternatively, we could
704 * sv_upgrade to avoid this.
705 */
706 {
707 /* swap sv_u */
708 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
709
710 /* if SvANY points to the head, we need to adjust the pointers,
711 * as the pointer for a still points to b, and maybe vice versa.
712 */
713 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
714 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
715 svany_in_head_set |= 1 << SVt_NV;
716 #endif
717
718 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
719
720 if (svany_in_head (SvTYPE (a)))
721 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
722
723 if (svany_in_head (SvTYPE (b)))
724 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
725 }
726#endif
727}
728
729/* swap sv heads, at least logically */
730static void
731swap_svs (pTHX_ Coro__State c)
732{
733 int i;
734
735 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
736 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
737}
738
739#define SWAP_SVS(coro) \
740 if (ecb_expect_false ((coro)->swap_sv)) \
741 swap_svs (aTHX_ (coro))
742
743static void
744on_enterleave_call (pTHX_ SV *cb);
472 745
473static void 746static void
474load_perl (pTHX_ Coro__State c) 747load_perl (pTHX_ Coro__State c)
475{ 748{
476 perl_slots *slot = c->slot; 749 perl_slots *slot = c->slot;
477 c->slot = 0; 750 c->slot = 0;
478 751
479 PL_mainstack = c->mainstack; 752 PL_mainstack = c->mainstack;
480 753
481 GvSV (PL_defgv) = slot->defsv; 754#if CORO_JIT
482 GvAV (PL_defgv) = slot->defav; 755 load_perl_slots (slot);
483 GvSV (PL_errgv) = slot->errsv; 756#else
484 GvSV (irsgv) = slot->irsgv;
485
486 #define VAR(name,type) PL_ ## name = slot->name; 757 #define VARx(name,expr,type) expr = slot->name;
487 # include "state.h" 758 #include "state.h"
488 #undef VAR 759#endif
489 760
490 { 761 {
491 dSP; 762 dSP;
492 763
493 CV *cv; 764 CV *cv;
494 765
495 /* now do the ugly restore mess */ 766 /* now do the ugly restore mess */
496 while (expect_true (cv = (CV *)POPs)) 767 while (ecb_expect_true (cv = (CV *)POPs))
497 { 768 {
498 put_padlist (aTHX_ cv); /* mark this padlist as available */ 769 put_padlist (aTHX_ cv); /* mark this padlist as available */
499 CvDEPTH (cv) = PTR2IV (POPs); 770 CvDEPTH (cv) = PTR2IV (POPs);
500 CvPADLIST (cv) = (AV *)POPs; 771 CvPADLIST (cv) = (PADLIST *)POPs;
501 } 772 }
502 773
503 PUTBACK; 774 PUTBACK;
504 } 775 }
505 776
506 slf_frame = c->slf_frame; 777 slf_frame = c->slf_frame;
778 CORO_THROW = c->except;
779
780 if (ecb_expect_false (enable_times))
781 {
782 if (ecb_expect_false (!times_valid))
783 coro_times_update ();
784
785 coro_times_sub (c);
786 }
787
788 if (ecb_expect_false (c->on_enter))
789 {
790 int i;
791
792 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
793 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
794 }
795
796 if (ecb_expect_false (c->on_enter_xs))
797 {
798 int i;
799
800 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
801 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
802 }
803
804 SWAP_SVS (c);
507} 805}
508 806
509static void 807static void
510save_perl (pTHX_ Coro__State c) 808save_perl (pTHX_ Coro__State c)
511{ 809{
810 SWAP_SVS (c);
811
812 if (ecb_expect_false (c->on_leave_xs))
813 {
814 int i;
815
816 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
817 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
818 }
819
820 if (ecb_expect_false (c->on_leave))
821 {
822 int i;
823
824 for (i = AvFILLp (c->on_leave); i >= 0; --i)
825 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
826 }
827
828 times_valid = 0;
829
830 if (ecb_expect_false (enable_times))
831 {
832 coro_times_update (); times_valid = 1;
833 coro_times_add (c);
834 }
835
836 c->except = CORO_THROW;
512 c->slf_frame = slf_frame; 837 c->slf_frame = slf_frame;
513 838
514 { 839 {
515 dSP; 840 dSP;
516 I32 cxix = cxstack_ix; 841 I32 cxix = cxstack_ix;
… …
524 849
525 XPUSHs (Nullsv); 850 XPUSHs (Nullsv);
526 /* this loop was inspired by pp_caller */ 851 /* this loop was inspired by pp_caller */
527 for (;;) 852 for (;;)
528 { 853 {
529 while (expect_true (cxix >= 0)) 854 while (ecb_expect_true (cxix >= 0))
530 { 855 {
531 PERL_CONTEXT *cx = &ccstk[cxix--]; 856 PERL_CONTEXT *cx = &ccstk[cxix--];
532 857
533 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 858 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
534 { 859 {
535 CV *cv = cx->blk_sub.cv; 860 CV *cv = cx->blk_sub.cv;
536 861
537 if (expect_true (CvDEPTH (cv))) 862 if (ecb_expect_true (CvDEPTH (cv)))
538 { 863 {
539 EXTEND (SP, 3); 864 EXTEND (SP, 3);
540 PUSHs ((SV *)CvPADLIST (cv)); 865 PUSHs ((SV *)CvPADLIST (cv));
541 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 866 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
542 PUSHs ((SV *)cv); 867 PUSHs ((SV *)cv);
… …
545 get_padlist (aTHX_ cv); 870 get_padlist (aTHX_ cv);
546 } 871 }
547 } 872 }
548 } 873 }
549 874
550 if (expect_true (top_si->si_type == PERLSI_MAIN)) 875 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
551 break; 876 break;
552 877
553 top_si = top_si->si_prev; 878 top_si = top_si->si_prev;
554 ccstk = top_si->si_cxstack; 879 ccstk = top_si->si_cxstack;
555 cxix = top_si->si_cxix; 880 cxix = top_si->si_cxix;
… …
557 882
558 PUTBACK; 883 PUTBACK;
559 } 884 }
560 885
561 /* allocate some space on the context stack for our purposes */ 886 /* allocate some space on the context stack for our purposes */
562 /* we manually unroll here, as usually 2 slots is enough */ 887 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
563 if (SLOT_COUNT >= 1) CXINC;
564 if (SLOT_COUNT >= 2) CXINC;
565 if (SLOT_COUNT >= 3) CXINC;
566 { 888 {
567 int i; 889 unsigned int i;
890
568 for (i = 3; i < SLOT_COUNT; ++i) 891 for (i = 0; i < SLOT_COUNT; ++i)
569 CXINC; 892 CXINC;
570 } 893
571 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 894 cxstack_ix -= SLOT_COUNT; /* undo allocation */
895 }
572 896
573 c->mainstack = PL_mainstack; 897 c->mainstack = PL_mainstack;
574 898
575 { 899 {
576 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 900 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
577 901
578 slot->defav = GvAV (PL_defgv); 902#if CORO_JIT
579 slot->defsv = DEFSV; 903 save_perl_slots (slot);
580 slot->errsv = ERRSV; 904#else
581 slot->irsgv = GvSV (irsgv);
582
583 #define VAR(name,type) slot->name = PL_ ## name; 905 #define VARx(name,expr,type) slot->name = expr;
584 # include "state.h" 906 #include "state.h"
585 #undef VAR 907#endif
586 } 908 }
587} 909}
588 910
589/* 911/*
590 * allocate various perl stacks. This is almost an exact copy 912 * allocate various perl stacks. This is almost an exact copy
591 * of perl.c:init_stacks, except that it uses less memory 913 * of perl.c:init_stacks, except that it uses less memory
592 * on the (sometimes correct) assumption that coroutines do 914 * on the (sometimes correct) assumption that coroutines do
593 * not usually need a lot of stackspace. 915 * not usually need a lot of stackspace.
594 */ 916 */
595#if CORO_PREFER_PERL_FUNCTIONS 917#if CORO_PREFER_PERL_FUNCTIONS
596# define coro_init_stacks init_stacks 918# define coro_init_stacks(thx) init_stacks ()
597#else 919#else
598static void 920static void
599coro_init_stacks (pTHX) 921coro_init_stacks (pTHX)
600{ 922{
601 PL_curstackinfo = new_stackinfo(32, 8); 923 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
602 PL_curstackinfo->si_type = PERLSI_MAIN; 924 PL_curstackinfo->si_type = PERLSI_MAIN;
603 PL_curstack = PL_curstackinfo->si_stack; 925 PL_curstack = PL_curstackinfo->si_stack;
604 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 926 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
605 927
606 PL_stack_base = AvARRAY(PL_curstack); 928 PL_stack_base = AvARRAY(PL_curstack);
… …
621#endif 943#endif
622 944
623 New(54,PL_scopestack,8,I32); 945 New(54,PL_scopestack,8,I32);
624 PL_scopestack_ix = 0; 946 PL_scopestack_ix = 0;
625 PL_scopestack_max = 8; 947 PL_scopestack_max = 8;
948#if HAS_SCOPESTACK_NAME
949 New(54,PL_scopestack_name,8,const char*);
950#endif
626 951
627 New(54,PL_savestack,24,ANY); 952 New(54,PL_savestack,24,ANY);
628 PL_savestack_ix = 0; 953 PL_savestack_ix = 0;
629 PL_savestack_max = 24; 954 PL_savestack_max = 24;
630 955
… …
658 } 983 }
659 984
660 Safefree (PL_tmps_stack); 985 Safefree (PL_tmps_stack);
661 Safefree (PL_markstack); 986 Safefree (PL_markstack);
662 Safefree (PL_scopestack); 987 Safefree (PL_scopestack);
988#if HAS_SCOPESTACK_NAME
989 Safefree (PL_scopestack_name);
990#endif
663 Safefree (PL_savestack); 991 Safefree (PL_savestack);
664#if !PERL_VERSION_ATLEAST (5,10,0) 992#if !PERL_VERSION_ATLEAST (5,10,0)
665 Safefree (PL_retstack); 993 Safefree (PL_retstack);
666#endif 994#endif
667} 995}
668 996
997#define CORO_RSS \
998 rss += sizeof (SYM (curstackinfo)); \
999 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
1000 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
1001 rss += SYM (tmps_max) * sizeof (SV *); \
1002 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
1003 rss += SYM (scopestack_max) * sizeof (I32); \
1004 rss += SYM (savestack_max) * sizeof (ANY);
1005
669static size_t 1006static size_t
670coro_rss (pTHX_ struct coro *coro) 1007coro_rss (pTHX_ struct coro *coro)
671{ 1008{
672 size_t rss = sizeof (*coro); 1009 size_t rss = sizeof (*coro);
673 1010
674 if (coro->mainstack) 1011 if (coro->mainstack)
675 { 1012 {
676 perl_slots tmp_slot;
677 perl_slots *slot;
678
679 if (coro->flags & CF_RUNNING) 1013 if (coro->flags & CF_RUNNING)
680 { 1014 {
681 slot = &tmp_slot; 1015 #define SYM(sym) PL_ ## sym
682 1016 CORO_RSS;
683 #define VAR(name,type) slot->name = PL_ ## name;
684 # include "state.h"
685 #undef VAR 1017 #undef SYM
686 } 1018 }
687 else 1019 else
688 slot = coro->slot;
689
690 if (slot)
691 { 1020 {
692 rss += sizeof (slot->curstackinfo); 1021 #define SYM(sym) coro->slot->sym
693 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1022 CORO_RSS;
694 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1023 #undef SYM
695 rss += slot->tmps_max * sizeof (SV *);
696 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
697 rss += slot->scopestack_max * sizeof (I32);
698 rss += slot->savestack_max * sizeof (ANY);
699
700#if !PERL_VERSION_ATLEAST (5,10,0)
701 rss += slot->retstack_max * sizeof (OP *);
702#endif
703 } 1024 }
704 } 1025 }
705 1026
706 return rss; 1027 return rss;
707} 1028}
… …
720#endif 1041#endif
721 1042
722/* 1043/*
723 * This overrides the default magic get method of %SIG elements. 1044 * This overrides the default magic get method of %SIG elements.
724 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1045 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
725 * and instead of tryign to save and restore the hash elements, we just provide 1046 * and instead of trying to save and restore the hash elements (extremely slow),
726 * readback here. 1047 * we just provide our own readback here.
727 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
728 * not expecting this to actually change the hook. This is a potential problem
729 * when a schedule happens then, but we ignore this.
730 */ 1048 */
731static int 1049static int ecb_cold
732coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1050coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
733{ 1051{
734 const char *s = MgPV_nolen_const (mg); 1052 const char *s = MgPV_nolen_const (mg);
735 1053
736 if (*s == '_') 1054 if (*s == '_')
737 { 1055 {
738 SV **svp = 0; 1056 SV **svp = 0;
739 1057
740 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1058 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
741 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1059 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
742 1060
743 if (svp) 1061 if (svp)
744 { 1062 {
745 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1063 SV *ssv;
1064
1065 if (!*svp)
1066 ssv = &PL_sv_undef;
1067 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1068 ssv = sv_2mortal (newRV_inc (*svp));
1069 else
1070 ssv = *svp;
1071
1072 sv_setsv (sv, ssv);
746 return 0; 1073 return 0;
747 } 1074 }
748 } 1075 }
749 1076
750 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1077 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
751} 1078}
752 1079
753static int 1080static int ecb_cold
754coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1081coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
755{ 1082{
756 const char *s = MgPV_nolen_const (mg); 1083 const char *s = MgPV_nolen_const (mg);
757 1084
758 if (*s == '_') 1085 if (*s == '_')
… …
772 } 1099 }
773 1100
774 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1101 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
775} 1102}
776 1103
777static int 1104static int ecb_cold
778coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1105coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
779{ 1106{
780 const char *s = MgPV_nolen_const (mg); 1107 const char *s = MgPV_nolen_const (mg);
781 1108
782 if (*s == '_') 1109 if (*s == '_')
… …
787 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1114 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
788 1115
789 if (svp) 1116 if (svp)
790 { 1117 {
791 SV *old = *svp; 1118 SV *old = *svp;
792 *svp = newSVsv (sv); 1119 *svp = SvOK (sv) ? newSVsv (sv) : 0;
793 SvREFCNT_dec (old); 1120 SvREFCNT_dec (old);
794 return 0; 1121 return 0;
795 } 1122 }
796 } 1123 }
797 1124
… …
809slf_check_nop (pTHX_ struct CoroSLF *frame) 1136slf_check_nop (pTHX_ struct CoroSLF *frame)
810{ 1137{
811 return 0; 1138 return 0;
812} 1139}
813 1140
814static void 1141static int
1142slf_check_repeat (pTHX_ struct CoroSLF *frame)
1143{
1144 return 1;
1145}
1146
1147static UNOP init_perl_op;
1148
1149ecb_noinline static void /* noinline to keep it out of the transfer fast path */
815coro_setup (pTHX_ struct coro *coro) 1150init_perl (pTHX_ struct coro *coro)
816{ 1151{
817 /* 1152 /*
818 * emulate part of the perl startup here. 1153 * emulate part of the perl startup here.
819 */ 1154 */
820 coro_init_stacks (aTHX); 1155 coro_init_stacks (aTHX);
821 1156
822 PL_runops = RUNOPS_DEFAULT; 1157 PL_runops = RUNOPS_DEFAULT;
823 PL_curcop = &PL_compiling; 1158 PL_curcop = &PL_compiling;
824 PL_in_eval = EVAL_NULL; 1159 PL_in_eval = EVAL_NULL;
825 PL_comppad = 0; 1160 PL_comppad = 0;
1161 PL_comppad_name = 0;
1162 PL_comppad_name_fill = 0;
1163 PL_comppad_name_floor = 0;
826 PL_curpm = 0; 1164 PL_curpm = 0;
827 PL_curpad = 0; 1165 PL_curpad = 0;
828 PL_localizing = 0; 1166 PL_localizing = 0;
829 PL_dirty = 0;
830 PL_restartop = 0; 1167 PL_restartop = 0;
831#if PERL_VERSION_ATLEAST (5,10,0) 1168#if PERL_VERSION_ATLEAST (5,10,0)
832 PL_parser = 0; 1169 PL_parser = 0;
833#endif 1170#endif
1171 PL_hints = 0;
834 1172
835 /* recreate the die/warn hooks */ 1173 /* recreate the die/warn hooks */
836 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1174 PL_diehook = SvREFCNT_inc (rv_diehook);
837 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1175 PL_warnhook = SvREFCNT_inc (rv_warnhook);
838 1176
839 GvSV (PL_defgv) = newSV (0); 1177 GvSV (PL_defgv) = newSV (0);
840 GvAV (PL_defgv) = coro->args; coro->args = 0; 1178 GvAV (PL_defgv) = coro->args; coro->args = 0;
841 GvSV (PL_errgv) = newSV (0); 1179 GvSV (PL_errgv) = newSV (0);
842 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1180 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1181 GvHV (PL_hintgv) = newHV ();
1182#if PERL_VERSION_ATLEAST (5,10,0)
1183 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1184#endif
843 PL_rs = newSVsv (GvSV (irsgv)); 1185 PL_rs = newSVsv (GvSV (irsgv));
844 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1186 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
845 1187
846 { 1188 {
847 dSP; 1189 dSP;
848 UNOP myop; 1190 UNOP myop;
849 1191
850 Zero (&myop, 1, UNOP); 1192 Zero (&myop, 1, UNOP);
851 myop.op_next = Nullop; 1193 myop.op_next = Nullop;
1194 myop.op_type = OP_ENTERSUB;
852 myop.op_flags = OPf_WANT_VOID; 1195 myop.op_flags = OPf_WANT_VOID;
853 1196
854 PUSHMARK (SP); 1197 PUSHMARK (SP);
855 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1198 PUSHs ((SV *)coro->startcv);
856 PUTBACK; 1199 PUTBACK;
857 PL_op = (OP *)&myop; 1200 PL_op = (OP *)&myop;
858 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1201 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
859 SPAGAIN;
860 } 1202 }
861 1203
862 /* this newly created coroutine might be run on an existing cctx which most 1204 /* this newly created coroutine might be run on an existing cctx which most
863 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1205 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
864 */ 1206 */
865 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1207 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
866 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1208 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
867} 1209 slf_frame.destroy = 0;
868 1210
1211 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1212 init_perl_op.op_next = PL_op;
1213 init_perl_op.op_type = OP_ENTERSUB;
1214 init_perl_op.op_ppaddr = pp_slf;
1215 /* no flags etc. required, as an init function won't be called */
1216
1217 PL_op = (OP *)&init_perl_op;
1218
1219 /* copy throw, in case it was set before init_perl */
1220 CORO_THROW = coro->except;
1221
1222 SWAP_SVS (coro);
1223
1224 if (ecb_expect_false (enable_times))
1225 {
1226 coro_times_update ();
1227 coro_times_sub (coro);
1228 }
1229}
1230
869static void 1231static void
870coro_destruct (pTHX_ struct coro *coro) 1232coro_unwind_stacks (pTHX)
871{ 1233{
872 if (!IN_DESTRUCT) 1234 if (!IN_DESTRUCT)
873 { 1235 {
874 /* restore all saved variables and stuff */ 1236 /* restore all saved variables and stuff */
875 LEAVE_SCOPE (0); 1237 LEAVE_SCOPE (0);
… …
883 POPSTACK_TO (PL_mainstack); 1245 POPSTACK_TO (PL_mainstack);
884 1246
885 /* unwind main stack */ 1247 /* unwind main stack */
886 dounwind (-1); 1248 dounwind (-1);
887 } 1249 }
1250}
888 1251
889 SvREFCNT_dec (GvSV (PL_defgv)); 1252static void
890 SvREFCNT_dec (GvAV (PL_defgv)); 1253destroy_perl (pTHX_ struct coro *coro)
891 SvREFCNT_dec (GvSV (PL_errgv)); 1254{
892 SvREFCNT_dec (PL_defoutgv); 1255 SV *svf [9];
893 SvREFCNT_dec (PL_rs);
894 SvREFCNT_dec (GvSV (irsgv));
895 1256
896 SvREFCNT_dec (PL_diehook);
897 SvREFCNT_dec (PL_warnhook);
898 1257 {
1258 SV *old_current = SvRV (coro_current);
1259 struct coro *current = SvSTATE (old_current);
1260
1261 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1262
1263 save_perl (aTHX_ current);
1264
1265 /* this will cause transfer_check to croak on block*/
1266 SvRV_set (coro_current, (SV *)coro->hv);
1267
1268 load_perl (aTHX_ coro);
1269
1270 coro_unwind_stacks (aTHX);
1271
1272 /* restore swapped sv's */
1273 SWAP_SVS (coro);
1274
1275 coro_destruct_stacks (aTHX);
1276
1277 /* now save some sv's to be free'd later */
1278 svf [0] = GvSV (PL_defgv);
1279 svf [1] = (SV *)GvAV (PL_defgv);
1280 svf [2] = GvSV (PL_errgv);
1281 svf [3] = (SV *)PL_defoutgv;
1282 svf [4] = PL_rs;
1283 svf [5] = GvSV (irsgv);
1284 svf [6] = (SV *)GvHV (PL_hintgv);
1285 svf [7] = PL_diehook;
1286 svf [8] = PL_warnhook;
1287 assert (9 == sizeof (svf) / sizeof (*svf));
1288
1289 SvRV_set (coro_current, old_current);
1290
1291 load_perl (aTHX_ current);
1292 }
1293
1294 {
1295 unsigned int i;
1296
1297 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1298 SvREFCNT_dec (svf [i]);
1299
899 SvREFCNT_dec (coro->saved_deffh); 1300 SvREFCNT_dec (coro->saved_deffh);
900 SvREFCNT_dec (coro->throw); 1301 SvREFCNT_dec (coro->rouse_cb);
901 1302 SvREFCNT_dec (coro->invoke_cb);
902 coro_destruct_stacks (aTHX); 1303 SvREFCNT_dec (coro->invoke_av);
1304 SvREFCNT_dec (coro->on_enter_xs);
1305 SvREFCNT_dec (coro->on_leave_xs);
1306 }
903} 1307}
904 1308
905INLINE void 1309ecb_inline void
906free_coro_mortal (pTHX) 1310free_coro_mortal (pTHX)
907{ 1311{
908 if (expect_true (coro_mortal)) 1312 if (ecb_expect_true (coro_mortal))
909 { 1313 {
910 SvREFCNT_dec (coro_mortal); 1314 SvREFCNT_dec ((SV *)coro_mortal);
911 coro_mortal = 0; 1315 coro_mortal = 0;
912 } 1316 }
913} 1317}
914 1318
915static int 1319static int
916runops_trace (pTHX) 1320runops_trace (pTHX)
917{ 1321{
918 COP *oldcop = 0; 1322 COP *oldcop = 0;
919 int oldcxix = -2; 1323 int oldcxix = -2;
920 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
921 coro_cctx *cctx = coro->cctx;
922 1324
923 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1325 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
924 { 1326 {
925 PERL_ASYNC_CHECK (); 1327 PERL_ASYNC_CHECK ();
926 1328
927 if (cctx->flags & CC_TRACE_ALL) 1329 if (cctx_current->flags & CC_TRACE_ALL)
928 { 1330 {
929 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1331 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
930 { 1332 {
931 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1333 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
932 SV **bot, **top; 1334 SV **bot, **top;
933 AV *av = newAV (); /* return values */ 1335 AV *av = newAV (); /* return values */
934 SV **cb; 1336 SV **cb;
… …
971 1373
972 if (PL_curcop != &PL_compiling) 1374 if (PL_curcop != &PL_compiling)
973 { 1375 {
974 SV **cb; 1376 SV **cb;
975 1377
976 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1378 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
977 { 1379 {
978 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1380 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
979 1381
980 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1382 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
981 { 1383 {
982 runops_proc_t old_runops = PL_runops;
983 dSP; 1384 dSP;
984 GV *gv = CvGV (cx->blk_sub.cv); 1385 GV *gv = CvGV (cx->blk_sub.cv);
985 SV *fullname = sv_2mortal (newSV (0)); 1386 SV *fullname = sv_2mortal (newSV (0));
986 1387
987 if (isGV (gv)) 1388 if (isGV (gv))
… …
992 SAVETMPS; 1393 SAVETMPS;
993 EXTEND (SP, 3); 1394 EXTEND (SP, 3);
994 PUSHMARK (SP); 1395 PUSHMARK (SP);
995 PUSHs (&PL_sv_yes); 1396 PUSHs (&PL_sv_yes);
996 PUSHs (fullname); 1397 PUSHs (fullname);
997 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1398 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
998 PUTBACK; 1399 PUTBACK;
999 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1400 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1000 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1401 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1001 SPAGAIN; 1402 SPAGAIN;
1002 FREETMPS; 1403 FREETMPS;
… …
1005 } 1406 }
1006 1407
1007 oldcxix = cxstack_ix; 1408 oldcxix = cxstack_ix;
1008 } 1409 }
1009 1410
1010 if (cctx->flags & CC_TRACE_LINE) 1411 if (cctx_current->flags & CC_TRACE_LINE)
1011 { 1412 {
1012 dSP; 1413 dSP;
1013 1414
1014 PL_runops = RUNOPS_DEFAULT; 1415 PL_runops = RUNOPS_DEFAULT;
1015 ENTER; 1416 ENTER;
… …
1034 1435
1035 TAINT_NOT; 1436 TAINT_NOT;
1036 return 0; 1437 return 0;
1037} 1438}
1038 1439
1440static struct CoroSLF cctx_ssl_frame;
1441
1039static void 1442static void
1040prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1443slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1041{ 1444{
1042 ta->prev = (struct coro *)cctx;
1043 ta->next = 0; 1445 ta->prev = 0;
1044} 1446}
1045 1447
1046/* inject a fake call to Coro::State::_cctx_init into the execution */ 1448static int
1047/* _cctx_init should be careful, as it could be called at almost any time */ 1449slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1048/* during execution of a perl program */
1049/* also initialises PL_top_env */
1050static void NOINLINE
1051cctx_prepare (pTHX_ coro_cctx *cctx)
1052{ 1450{
1053 dSP; 1451 *frame = cctx_ssl_frame;
1054 UNOP myop;
1055 1452
1453 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1454}
1455
1456/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1457static void ecb_noinline
1458cctx_prepare (pTHX)
1459{
1056 PL_top_env = &PL_start_env; 1460 PL_top_env = &PL_start_env;
1057 1461
1058 if (cctx->flags & CC_TRACE) 1462 if (cctx_current->flags & CC_TRACE)
1059 PL_runops = runops_trace; 1463 PL_runops = runops_trace;
1060 1464
1061 Zero (&myop, 1, UNOP); 1465 /* we already must be executing an SLF op, there is no other valid way
1062 myop.op_next = PL_op; 1466 * that can lead to creation of a new cctx */
1063 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1467 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1468 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1064 1469
1065 PUSHMARK (SP); 1470 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1066 EXTEND (SP, 2); 1471 cctx_ssl_frame = slf_frame;
1067 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1472
1068 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1473 slf_frame.prepare = slf_prepare_set_stacklevel;
1069 PUTBACK; 1474 slf_frame.check = slf_check_set_stacklevel;
1070 PL_op = (OP *)&myop;
1071 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1072 SPAGAIN;
1073} 1475}
1074 1476
1075/* the tail of transfer: execute stuff we can only do after a transfer */ 1477/* the tail of transfer: execute stuff we can only do after a transfer */
1076INLINE void 1478ecb_inline void
1077transfer_tail (pTHX) 1479transfer_tail (pTHX)
1078{ 1480{
1079 struct coro *next = (struct coro *)transfer_next;
1080 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1081 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1082
1083 free_coro_mortal (aTHX); 1481 free_coro_mortal (aTHX);
1482}
1084 1483
1085 if (expect_false (next->throw)) 1484/* try to exit the same way perl's main function would do */
1086 { 1485/* we do not bother resetting the environment or other things *7
1087 SV *exception = sv_2mortal (next->throw); 1486/* that are not, uhm, essential */
1088 1487/* this obviously also doesn't work when perl is embedded */
1089 next->throw = 0; 1488static void ecb_noinline ecb_cold
1090 sv_setsv (ERRSV, exception); 1489perlish_exit (pTHX)
1091 croak (0); 1490{
1092 } 1491 int exitstatus = perl_destruct (PL_curinterp);
1492 perl_free (PL_curinterp);
1493 exit (exitstatus);
1093} 1494}
1094 1495
1095/* 1496/*
1096 * this is a _very_ stripped down perl interpreter ;) 1497 * this is a _very_ stripped down perl interpreter ;)
1097 */ 1498 */
… …
1109 /* normally we would need to skip the entersub here */ 1510 /* normally we would need to skip the entersub here */
1110 /* not doing so will re-execute it, which is exactly what we want */ 1511 /* not doing so will re-execute it, which is exactly what we want */
1111 /* PL_nop = PL_nop->op_next */ 1512 /* PL_nop = PL_nop->op_next */
1112 1513
1113 /* inject a fake subroutine call to cctx_init */ 1514 /* inject a fake subroutine call to cctx_init */
1114 cctx_prepare (aTHX_ (coro_cctx *)arg); 1515 cctx_prepare (aTHX);
1115 1516
1116 /* cctx_run is the alternative tail of transfer() */ 1517 /* cctx_run is the alternative tail of transfer() */
1117 /* TODO: throwing an exception here might be deadly, VERIFY */
1118 transfer_tail (aTHX); 1518 transfer_tail (aTHX);
1119 1519
1120 /* somebody or something will hit me for both perl_run and PL_restartop */ 1520 /* somebody or something will hit me for both perl_run and PL_restartop */
1121 PL_restartop = PL_op; 1521 PL_restartop = PL_op;
1122 perl_run (PL_curinterp); 1522 perl_run (PL_curinterp);
1523 /*
1524 * Unfortunately, there is no way to get at the return values of the
1525 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1526 * runtime errors here, as this is just a random interpreter, not a thread.
1527 */
1123 1528
1124 /* 1529 /*
1125 * If perl-run returns we assume exit() was being called or the coro 1530 * If perl-run returns we assume exit() was being called or the coro
1126 * fell off the end, which seems to be the only valid (non-bug) 1531 * fell off the end, which seems to be the only valid (non-bug)
1127 * reason for perl_run to return. We try to exit by jumping to the 1532 * reason for perl_run to return. We try to mimic whatever perl is normally
1128 * bootstrap-time "top" top_env, as we cannot restore the "main" 1533 * doing in that case. YMMV.
1129 * coroutine as Coro has no such concept
1130 */ 1534 */
1131 PL_top_env = main_top_env; 1535 perlish_exit (aTHX);
1132 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1133 } 1536 }
1134} 1537}
1135 1538
1136static coro_cctx * 1539static coro_cctx *
1137cctx_new () 1540cctx_new (void)
1138{ 1541{
1139 coro_cctx *cctx; 1542 coro_cctx *cctx;
1140 1543
1141 ++cctx_count; 1544 ++cctx_count;
1142 New (0, cctx, 1, coro_cctx); 1545 New (0, cctx, 1, coro_cctx);
… …
1148 return cctx; 1551 return cctx;
1149} 1552}
1150 1553
1151/* create a new cctx only suitable as source */ 1554/* create a new cctx only suitable as source */
1152static coro_cctx * 1555static coro_cctx *
1153cctx_new_empty () 1556cctx_new_empty (void)
1154{ 1557{
1155 coro_cctx *cctx = cctx_new (); 1558 coro_cctx *cctx = cctx_new ();
1156 1559
1157 cctx->sptr = 0; 1560 cctx->stack.sptr = 0;
1158 coro_create (&cctx->cctx, 0, 0, 0, 0); 1561 coro_create (&cctx->cctx, 0, 0, 0, 0);
1159 1562
1160 return cctx; 1563 return cctx;
1161} 1564}
1162 1565
1163/* create a new cctx suitable as destination/running a perl interpreter */ 1566/* create a new cctx suitable as destination/running a perl interpreter */
1164static coro_cctx * 1567static coro_cctx *
1165cctx_new_run () 1568cctx_new_run (void)
1166{ 1569{
1167 coro_cctx *cctx = cctx_new (); 1570 coro_cctx *cctx = cctx_new ();
1168 void *stack_start;
1169 size_t stack_size;
1170 1571
1171#if HAVE_MMAP 1572 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1172 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1173 /* mmap supposedly does allocate-on-write for us */
1174 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1175
1176 if (cctx->sptr != (void *)-1)
1177 {
1178 #if CORO_STACKGUARD
1179 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1180 #endif
1181 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1182 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1183 cctx->flags |= CC_MAPPED;
1184 } 1573 {
1185 else
1186#endif
1187 {
1188 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1189 New (0, cctx->sptr, cctx_stacksize, long);
1190
1191 if (!cctx->sptr)
1192 {
1193 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1574 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1194 _exit (EXIT_FAILURE); 1575 _exit (EXIT_FAILURE);
1195 }
1196
1197 stack_start = cctx->sptr;
1198 stack_size = cctx->ssize;
1199 } 1576 }
1200 1577
1201 #if CORO_USE_VALGRIND
1202 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1203 #endif
1204
1205 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1578 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1206 1579
1207 return cctx; 1580 return cctx;
1208} 1581}
1209 1582
1210static void 1583static void
1211cctx_destroy (coro_cctx *cctx) 1584cctx_destroy (coro_cctx *cctx)
1212{ 1585{
1213 if (!cctx) 1586 if (!cctx)
1214 return; 1587 return;
1215 1588
1589 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1590
1216 --cctx_count; 1591 --cctx_count;
1217 coro_destroy (&cctx->cctx); 1592 coro_destroy (&cctx->cctx);
1218 1593
1219 /* coro_transfer creates new, empty cctx's */ 1594 coro_stack_free (&cctx->stack);
1220 if (cctx->sptr)
1221 {
1222 #if CORO_USE_VALGRIND
1223 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1224 #endif
1225
1226#if HAVE_MMAP
1227 if (cctx->flags & CC_MAPPED)
1228 munmap (cctx->sptr, cctx->ssize);
1229 else
1230#endif
1231 Safefree (cctx->sptr);
1232 }
1233 1595
1234 Safefree (cctx); 1596 Safefree (cctx);
1235} 1597}
1236 1598
1237/* wether this cctx should be destructed */ 1599/* wether this cctx should be destructed */
1238#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1600#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1239 1601
1240static coro_cctx * 1602static coro_cctx *
1241cctx_get (pTHX) 1603cctx_get (pTHX)
1242{ 1604{
1243 while (expect_true (cctx_first)) 1605 while (ecb_expect_true (cctx_first))
1244 { 1606 {
1245 coro_cctx *cctx = cctx_first; 1607 coro_cctx *cctx = cctx_first;
1246 cctx_first = cctx->next; 1608 cctx_first = cctx->next;
1247 --cctx_idle; 1609 --cctx_idle;
1248 1610
1249 if (expect_true (!CCTX_EXPIRED (cctx))) 1611 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1250 return cctx; 1612 return cctx;
1251 1613
1252 cctx_destroy (cctx); 1614 cctx_destroy (cctx);
1253 } 1615 }
1254 1616
… …
1256} 1618}
1257 1619
1258static void 1620static void
1259cctx_put (coro_cctx *cctx) 1621cctx_put (coro_cctx *cctx)
1260{ 1622{
1261 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1623 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1262 1624
1263 /* free another cctx if overlimit */ 1625 /* free another cctx if overlimit */
1264 if (expect_false (cctx_idle >= cctx_max_idle)) 1626 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1265 { 1627 {
1266 coro_cctx *first = cctx_first; 1628 coro_cctx *first = cctx_first;
1267 cctx_first = first->next; 1629 cctx_first = first->next;
1268 --cctx_idle; 1630 --cctx_idle;
1269 1631
… …
1278/** coroutine switching *****************************************************/ 1640/** coroutine switching *****************************************************/
1279 1641
1280static void 1642static void
1281transfer_check (pTHX_ struct coro *prev, struct coro *next) 1643transfer_check (pTHX_ struct coro *prev, struct coro *next)
1282{ 1644{
1645 /* TODO: throwing up here is considered harmful */
1646
1283 if (expect_true (prev != next)) 1647 if (ecb_expect_true (prev != next))
1284 { 1648 {
1285 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1649 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1286 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1650 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1287 1651
1288 if (expect_false (next->flags & CF_RUNNING)) 1652 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1289 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1290
1291 if (expect_false (next->flags & CF_DESTROYED))
1292 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1653 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1293 1654
1294#if !PERL_VERSION_ATLEAST (5,10,0) 1655#if !PERL_VERSION_ATLEAST (5,10,0)
1295 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1656 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1296 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1657 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1297#endif 1658#endif
1298 } 1659 }
1299} 1660}
1300 1661
1301/* always use the TRANSFER macro */ 1662/* always use the TRANSFER macro */
1302static void NOINLINE 1663static void ecb_noinline /* noinline so we have a fixed stackframe */
1303transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1664transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1304{ 1665{
1305 dSTACKLEVEL; 1666 dSTACKLEVEL;
1306 1667
1307 /* sometimes transfer is only called to set idle_sp */ 1668 /* sometimes transfer is only called to set idle_sp */
1308 if (expect_false (!next)) 1669 if (ecb_expect_false (!prev))
1309 { 1670 {
1310 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1671 cctx_current->idle_sp = STACKLEVEL;
1311 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1672 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1312 } 1673 }
1313 else if (expect_true (prev != next)) 1674 else if (ecb_expect_true (prev != next))
1314 { 1675 {
1315 coro_cctx *prev__cctx; 1676 coro_cctx *cctx_prev;
1316 1677
1317 if (expect_false (prev->flags & CF_NEW)) 1678 if (ecb_expect_false (prev->flags & CF_NEW))
1318 { 1679 {
1319 /* create a new empty/source context */ 1680 /* create a new empty/source context */
1320 prev->cctx = cctx_new_empty ();
1321 prev->flags &= ~CF_NEW; 1681 prev->flags &= ~CF_NEW;
1322 prev->flags |= CF_RUNNING; 1682 prev->flags |= CF_RUNNING;
1323 } 1683 }
1324 1684
1325 prev->flags &= ~CF_RUNNING; 1685 prev->flags &= ~CF_RUNNING;
1326 next->flags |= CF_RUNNING; 1686 next->flags |= CF_RUNNING;
1327 1687
1328 /* first get rid of the old state */ 1688 /* first get rid of the old state */
1329 save_perl (aTHX_ prev); 1689 save_perl (aTHX_ prev);
1330 1690
1331 if (expect_false (next->flags & CF_NEW)) 1691 if (ecb_expect_false (next->flags & CF_NEW))
1332 { 1692 {
1333 /* need to start coroutine */ 1693 /* need to start coroutine */
1334 next->flags &= ~CF_NEW; 1694 next->flags &= ~CF_NEW;
1335 /* setup coroutine call */ 1695 /* setup coroutine call */
1336 coro_setup (aTHX_ next); 1696 init_perl (aTHX_ next);
1337 } 1697 }
1338 else 1698 else
1339 load_perl (aTHX_ next); 1699 load_perl (aTHX_ next);
1340 1700
1341 prev__cctx = prev->cctx;
1342
1343 /* possibly untie and reuse the cctx */ 1701 /* possibly untie and reuse the cctx */
1344 if (expect_true ( 1702 if (ecb_expect_true (
1345 prev__cctx->idle_sp == (void *)stacklevel 1703 cctx_current->idle_sp == STACKLEVEL
1346 && !(prev__cctx->flags & CC_TRACE) 1704 && !(cctx_current->flags & CC_TRACE)
1347 && !force_cctx 1705 && !force_cctx
1348 )) 1706 ))
1349 { 1707 {
1350 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1708 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1351 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1709 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1352 1710
1353 prev->cctx = 0;
1354
1355 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1711 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1356 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1712 /* without this the next cctx_get might destroy the running cctx while still in use */
1357 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1713 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1358 if (!next->cctx) 1714 if (ecb_expect_true (!next->cctx))
1359 next->cctx = cctx_get (aTHX); 1715 next->cctx = cctx_get (aTHX);
1360 1716
1361 cctx_put (prev__cctx); 1717 cctx_put (cctx_current);
1362 } 1718 }
1719 else
1720 prev->cctx = cctx_current;
1363 1721
1364 ++next->usecount; 1722 ++next->usecount;
1365 1723
1366 if (expect_true (!next->cctx)) 1724 cctx_prev = cctx_current;
1367 next->cctx = cctx_get (aTHX); 1725 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1368 1726
1369 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1727 next->cctx = 0;
1370 transfer_next = next;
1371 1728
1372 if (expect_false (prev__cctx != next->cctx)) 1729 if (ecb_expect_false (cctx_prev != cctx_current))
1373 { 1730 {
1374 prev__cctx->top_env = PL_top_env; 1731 cctx_prev->top_env = PL_top_env;
1375 PL_top_env = next->cctx->top_env; 1732 PL_top_env = cctx_current->top_env;
1376 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1733 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1377 } 1734 }
1378 1735
1379 transfer_tail (aTHX); 1736 transfer_tail (aTHX);
1380 } 1737 }
1381} 1738}
… …
1383#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1740#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1384#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1741#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1385 1742
1386/** high level stuff ********************************************************/ 1743/** high level stuff ********************************************************/
1387 1744
1745/* this function is actually Coro, not Coro::State, but we call it from here */
1746/* because it is convenient - but it hasn't been declared yet for that reason */
1388static int 1747static void
1748coro_call_on_destroy (pTHX_ struct coro *coro);
1749
1750static void
1389coro_state_destroy (pTHX_ struct coro *coro) 1751coro_state_destroy (pTHX_ struct coro *coro)
1390{ 1752{
1391 if (coro->flags & CF_DESTROYED) 1753 if (coro->flags & CF_ZOMBIE)
1392 return 0; 1754 return;
1393 1755
1394 if (coro->on_destroy)
1395 coro->on_destroy (aTHX_ coro); 1756 slf_destroy (aTHX_ coro);
1396 1757
1397 coro->flags |= CF_DESTROYED; 1758 coro->flags |= CF_ZOMBIE;
1398 1759
1399 if (coro->flags & CF_READY) 1760 if (coro->flags & CF_READY)
1400 { 1761 {
1401 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1762 /* reduce nready, as destroying a ready coro effectively unreadies it */
1402 /* alternative: look through all ready queues and remove the coro */ 1763 /* alternative: look through all ready queues and remove the coro */
1403 --coro_nready; 1764 --coro_nready;
1404 } 1765 }
1405 else 1766 else
1406 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1767 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1407 1768
1408 if (coro->mainstack && coro->mainstack != main_mainstack)
1409 {
1410 struct coro temp;
1411
1412 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1413
1414 save_perl (aTHX_ &temp);
1415 load_perl (aTHX_ coro);
1416
1417 coro_destruct (aTHX_ coro);
1418
1419 load_perl (aTHX_ &temp);
1420
1421 coro->slot = 0;
1422 }
1423
1424 cctx_destroy (coro->cctx);
1425 SvREFCNT_dec (coro->args);
1426
1427 if (coro->next) coro->next->prev = coro->prev; 1769 if (coro->next) coro->next->prev = coro->prev;
1428 if (coro->prev) coro->prev->next = coro->next; 1770 if (coro->prev) coro->prev->next = coro->next;
1429 if (coro == coro_first) coro_first = coro->next; 1771 if (coro == coro_first) coro_first = coro->next;
1430 1772
1431 return 1; 1773 if (coro->mainstack
1774 && coro->mainstack != main_mainstack
1775 && coro->slot
1776 && !PL_dirty)
1777 destroy_perl (aTHX_ coro);
1778
1779 cctx_destroy (coro->cctx);
1780 SvREFCNT_dec (coro->startcv);
1781 SvREFCNT_dec (coro->args);
1782 SvREFCNT_dec (coro->swap_sv);
1783 SvREFCNT_dec (CORO_THROW);
1784
1785 coro_call_on_destroy (aTHX_ coro);
1786
1787 /* more destruction mayhem in coro_state_free */
1432} 1788}
1433 1789
1434static int 1790static int
1435coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1791coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1436{ 1792{
1437 struct coro *coro = (struct coro *)mg->mg_ptr; 1793 struct coro *coro = (struct coro *)mg->mg_ptr;
1438 mg->mg_ptr = 0; 1794 mg->mg_ptr = 0;
1439 1795
1440 coro->hv = 0;
1441
1442 if (--coro->refcnt < 0)
1443 {
1444 coro_state_destroy (aTHX_ coro); 1796 coro_state_destroy (aTHX_ coro);
1797 SvREFCNT_dec (coro->on_destroy);
1798 SvREFCNT_dec (coro->status);
1799
1445 Safefree (coro); 1800 Safefree (coro);
1446 }
1447 1801
1448 return 0; 1802 return 0;
1449} 1803}
1450 1804
1451static int 1805static int ecb_cold
1452coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1806coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1453{ 1807{
1454 struct coro *coro = (struct coro *)mg->mg_ptr; 1808 /* called when perl clones the current process the slow way (windows process emulation) */
1455 1809 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1456 ++coro->refcnt; 1810 mg->mg_ptr = 0;
1811 mg->mg_virtual = 0;
1457 1812
1458 return 0; 1813 return 0;
1459} 1814}
1460 1815
1461static MGVTBL coro_state_vtbl = { 1816static MGVTBL coro_state_vtbl = {
… …
1486 TRANSFER (ta, 1); 1841 TRANSFER (ta, 1);
1487} 1842}
1488 1843
1489/** Coro ********************************************************************/ 1844/** Coro ********************************************************************/
1490 1845
1491static void 1846ecb_inline void
1492coro_enq (pTHX_ SV *coro_sv) 1847coro_enq (pTHX_ struct coro *coro)
1493{ 1848{
1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1849 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1495}
1496 1850
1497static SV * 1851 SvREFCNT_inc_NN (coro->hv);
1852
1853 coro->next_ready = 0;
1854 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1855 ready [1] = coro;
1856}
1857
1858ecb_inline struct coro *
1498coro_deq (pTHX) 1859coro_deq (pTHX)
1499{ 1860{
1500 int prio; 1861 int prio;
1501 1862
1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1863 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1503 if (AvFILLp (coro_ready [prio]) >= 0) 1864 {
1504 return av_shift (coro_ready [prio]); 1865 struct coro **ready = coro_ready [prio];
1866
1867 if (ready [0])
1868 {
1869 struct coro *coro = ready [0];
1870 ready [0] = coro->next_ready;
1871 return coro;
1872 }
1873 }
1505 1874
1506 return 0; 1875 return 0;
1876}
1877
1878static void
1879invoke_sv_ready_hook_helper (void)
1880{
1881 dTHX;
1882 dSP;
1883
1884 ENTER;
1885 SAVETMPS;
1886
1887 PUSHMARK (SP);
1888 PUTBACK;
1889 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1890
1891 FREETMPS;
1892 LEAVE;
1507} 1893}
1508 1894
1509static int 1895static int
1510api_ready (pTHX_ SV *coro_sv) 1896api_ready (pTHX_ SV *coro_sv)
1511{ 1897{
1512 struct coro *coro;
1513 SV *sv_hook;
1514 void (*xs_hook)(void);
1515
1516 if (SvROK (coro_sv))
1517 coro_sv = SvRV (coro_sv);
1518
1519 coro = SvSTATE (coro_sv); 1898 struct coro *coro = SvSTATE (coro_sv);
1520 1899
1521 if (coro->flags & CF_READY) 1900 if (coro->flags & CF_READY)
1522 return 0; 1901 return 0;
1523 1902
1524 coro->flags |= CF_READY; 1903 coro->flags |= CF_READY;
1525 1904
1526 sv_hook = coro_nready ? 0 : coro_readyhook; 1905 coro_enq (aTHX_ coro);
1527 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1528 1906
1529 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1907 if (!coro_nready++)
1530 ++coro_nready; 1908 if (coroapi.readyhook)
1531 1909 coroapi.readyhook ();
1532 if (sv_hook)
1533 {
1534 dSP;
1535
1536 ENTER;
1537 SAVETMPS;
1538
1539 PUSHMARK (SP);
1540 PUTBACK;
1541 call_sv (sv_hook, G_DISCARD);
1542 SPAGAIN;
1543
1544 FREETMPS;
1545 LEAVE;
1546 }
1547
1548 if (xs_hook)
1549 xs_hook ();
1550 1910
1551 return 1; 1911 return 1;
1552} 1912}
1553 1913
1554static int 1914static int
1555api_is_ready (pTHX_ SV *coro_sv) 1915api_is_ready (pTHX_ SV *coro_sv)
1556{ 1916{
1557 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1917 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1558} 1918}
1559 1919
1560INLINE void 1920/* expects to own a reference to next->hv */
1921ecb_inline void
1561prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1922prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1562{ 1923{
1563 SV *prev_sv, *next_sv;
1564
1565 for (;;)
1566 {
1567 next_sv = coro_deq (aTHX);
1568
1569 /* nothing to schedule: call the idle handler */
1570 if (expect_false (!next_sv))
1571 {
1572 dSP;
1573
1574 ENTER;
1575 SAVETMPS;
1576
1577 PUSHMARK (SP);
1578 PUTBACK;
1579 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1580 SPAGAIN;
1581
1582 FREETMPS;
1583 LEAVE;
1584 continue;
1585 }
1586
1587 ta->next = SvSTATE (next_sv);
1588
1589 /* cannot transfer to destroyed coros, skip and look for next */
1590 if (expect_false (ta->next->flags & CF_DESTROYED))
1591 {
1592 SvREFCNT_dec (next_sv);
1593 /* coro_nready has already been taken care of by destroy */
1594 continue;
1595 }
1596
1597 --coro_nready;
1598 break;
1599 }
1600
1601 /* free this only after the transfer */
1602 prev_sv = SvRV (coro_current); 1924 SV *prev_sv = SvRV (coro_current);
1925
1603 ta->prev = SvSTATE (prev_sv); 1926 ta->prev = SvSTATE_hv (prev_sv);
1927 ta->next = next;
1928
1604 TRANSFER_CHECK (*ta); 1929 TRANSFER_CHECK (*ta);
1605 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1930
1606 ta->next->flags &= ~CF_READY;
1607 SvRV_set (coro_current, next_sv); 1931 SvRV_set (coro_current, (SV *)next->hv);
1608 1932
1609 free_coro_mortal (aTHX); 1933 free_coro_mortal (aTHX);
1610 coro_mortal = prev_sv; 1934 coro_mortal = prev_sv;
1611} 1935}
1612 1936
1613INLINE void 1937static void
1938prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1939{
1940 for (;;)
1941 {
1942 struct coro *next = coro_deq (aTHX);
1943
1944 if (ecb_expect_true (next))
1945 {
1946 /* cannot transfer to destroyed coros, skip and look for next */
1947 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1948 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1949 else
1950 {
1951 next->flags &= ~CF_READY;
1952 --coro_nready;
1953
1954 prepare_schedule_to (aTHX_ ta, next);
1955 break;
1956 }
1957 }
1958 else
1959 {
1960 /* nothing to schedule: call the idle handler */
1961 if (SvROK (sv_idle)
1962 && SvOBJECT (SvRV (sv_idle)))
1963 {
1964 if (SvRV (sv_idle) == SvRV (coro_current))
1965 {
1966 require_pv ("Carp");
1967
1968 {
1969 dSP;
1970
1971 ENTER;
1972 SAVETMPS;
1973
1974 PUSHMARK (SP);
1975 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
1976 PUTBACK;
1977 call_pv ("Carp::confess", G_VOID | G_DISCARD);
1978
1979 FREETMPS;
1980 LEAVE;
1981 }
1982 }
1983
1984 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1985 api_ready (aTHX_ SvRV (sv_idle));
1986 --coro_nready;
1987 }
1988 else
1989 {
1990 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1991 dSP;
1992
1993 ENTER;
1994 SAVETMPS;
1995
1996 PUSHMARK (SP);
1997 PUTBACK;
1998 call_sv (sv_idle, G_VOID | G_DISCARD);
1999
2000 FREETMPS;
2001 LEAVE;
2002 }
2003 }
2004 }
2005}
2006
2007ecb_inline void
1614prepare_cede (pTHX_ struct coro_transfer_args *ta) 2008prepare_cede (pTHX_ struct coro_transfer_args *ta)
1615{ 2009{
1616 api_ready (aTHX_ coro_current); 2010 api_ready (aTHX_ coro_current);
1617 prepare_schedule (aTHX_ ta); 2011 prepare_schedule (aTHX_ ta);
1618} 2012}
1619 2013
1620INLINE void 2014ecb_inline void
1621prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2015prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1622{ 2016{
1623 SV *prev = SvRV (coro_current); 2017 SV *prev = SvRV (coro_current);
1624 2018
1625 if (coro_nready) 2019 if (coro_nready)
… …
1638 2032
1639 prepare_schedule (aTHX_ &ta); 2033 prepare_schedule (aTHX_ &ta);
1640 TRANSFER (ta, 1); 2034 TRANSFER (ta, 1);
1641} 2035}
1642 2036
2037static void
2038api_schedule_to (pTHX_ SV *coro_sv)
2039{
2040 struct coro_transfer_args ta;
2041 struct coro *next = SvSTATE (coro_sv);
2042
2043 SvREFCNT_inc_NN (coro_sv);
2044 prepare_schedule_to (aTHX_ &ta, next);
2045}
2046
1643static int 2047static int
1644api_cede (pTHX) 2048api_cede (pTHX)
1645{ 2049{
1646 struct coro_transfer_args ta; 2050 struct coro_transfer_args ta;
1647 2051
1648 prepare_cede (aTHX_ &ta); 2052 prepare_cede (aTHX_ &ta);
1649 2053
1650 if (expect_true (ta.prev != ta.next)) 2054 if (ecb_expect_true (ta.prev != ta.next))
1651 { 2055 {
1652 TRANSFER (ta, 1); 2056 TRANSFER (ta, 1);
1653 return 1; 2057 return 1;
1654 } 2058 }
1655 else 2059 else
… …
1674static void 2078static void
1675api_trace (pTHX_ SV *coro_sv, int flags) 2079api_trace (pTHX_ SV *coro_sv, int flags)
1676{ 2080{
1677 struct coro *coro = SvSTATE (coro_sv); 2081 struct coro *coro = SvSTATE (coro_sv);
1678 2082
2083 if (coro->flags & CF_RUNNING)
2084 croak ("cannot enable tracing on a running coroutine, caught");
2085
1679 if (flags & CC_TRACE) 2086 if (flags & CC_TRACE)
1680 { 2087 {
1681 if (!coro->cctx) 2088 if (!coro->cctx)
1682 coro->cctx = cctx_new_run (); 2089 coro->cctx = cctx_new_run ();
1683 else if (!(coro->cctx->flags & CC_TRACE)) 2090 else if (!(coro->cctx->flags & CC_TRACE))
1684 croak ("cannot enable tracing on coroutine with custom stack,"); 2091 croak ("cannot enable tracing on coroutine with custom stack, caught");
1685 2092
1686 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2093 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1687 } 2094 }
1688 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2095 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1689 { 2096 {
… …
1694 else 2101 else
1695 coro->slot->runops = RUNOPS_DEFAULT; 2102 coro->slot->runops = RUNOPS_DEFAULT;
1696 } 2103 }
1697} 2104}
1698 2105
2106static void
2107coro_push_av (pTHX_ AV *av, I32 gimme_v)
2108{
2109 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2110 {
2111 dSP;
2112
2113 if (gimme_v == G_SCALAR)
2114 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2115 else
2116 {
2117 int i;
2118 EXTEND (SP, AvFILLp (av) + 1);
2119
2120 for (i = 0; i <= AvFILLp (av); ++i)
2121 PUSHs (AvARRAY (av)[i]);
2122 }
2123
2124 PUTBACK;
2125 }
2126}
2127
2128static void
2129coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2130{
2131 if (!coro->on_destroy)
2132 coro->on_destroy = newAV ();
2133
2134 av_push (coro->on_destroy, cb);
2135}
2136
2137static void
2138slf_destroy_join (pTHX_ struct CoroSLF *frame)
2139{
2140 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2141}
2142
2143static int
2144slf_check_join (pTHX_ struct CoroSLF *frame)
2145{
2146 struct coro *coro = (struct coro *)frame->data;
2147
2148 if (!coro->status)
2149 return 1;
2150
2151 frame->destroy = 0;
2152
2153 coro_push_av (aTHX_ coro->status, GIMME_V);
2154
2155 SvREFCNT_dec ((SV *)coro->hv);
2156
2157 return 0;
2158}
2159
2160static void
2161slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2162{
2163 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2164
2165 if (items > 1)
2166 croak ("join called with too many arguments");
2167
2168 if (coro->status)
2169 frame->prepare = prepare_nop;
2170 else
2171 {
2172 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2173 frame->prepare = prepare_schedule;
2174 }
2175
2176 frame->check = slf_check_join;
2177 frame->destroy = slf_destroy_join;
2178 frame->data = (void *)coro;
2179 SvREFCNT_inc (coro->hv);
2180}
2181
2182static void
2183coro_call_on_destroy (pTHX_ struct coro *coro)
2184{
2185 AV *od = coro->on_destroy;
2186
2187 if (!od)
2188 return;
2189
2190 coro->on_destroy = 0;
2191 sv_2mortal ((SV *)od);
2192
2193 while (AvFILLp (od) >= 0)
2194 {
2195 SV *cb = sv_2mortal (av_pop (od));
2196
2197 /* coro hv's (and only hv's at the moment) are supported as well */
2198 if (SvSTATEhv_p (aTHX_ cb))
2199 api_ready (aTHX_ cb);
2200 else
2201 {
2202 dSP; /* don't disturb outer sp */
2203 PUSHMARK (SP);
2204
2205 if (coro->status)
2206 {
2207 PUTBACK;
2208 coro_push_av (aTHX_ coro->status, G_ARRAY);
2209 SPAGAIN;
2210 }
2211
2212 PUTBACK;
2213 call_sv (cb, G_VOID | G_DISCARD);
2214 }
2215 }
2216}
2217
2218static void
2219coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2220{
2221 AV *av;
2222
2223 if (coro->status)
2224 {
2225 av = coro->status;
2226 av_clear (av);
2227 }
2228 else
2229 av = coro->status = newAV ();
2230
2231 /* items are actually not so common, so optimise for this case */
2232 if (items)
2233 {
2234 int i;
2235
2236 av_extend (av, items - 1);
2237
2238 for (i = 0; i < items; ++i)
2239 av_push (av, SvREFCNT_inc_NN (arg [i]));
2240 }
2241}
2242
2243static void
2244slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2245{
2246 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2247 api_ready (aTHX_ sv_manager);
2248
2249 frame->prepare = prepare_schedule;
2250 frame->check = slf_check_repeat;
2251
2252 /* as a minor optimisation, we could unwind all stacks here */
2253 /* but that puts extra pressure on pp_slf, and is not worth much */
2254 /*coro_unwind_stacks (aTHX);*/
2255}
2256
2257static void
2258slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2259{
2260 HV *coro_hv = (HV *)SvRV (coro_current);
2261
2262 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2263 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2264}
2265
2266static void
2267slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2268{
2269 HV *coro_hv;
2270 struct coro *coro;
2271
2272 if (items <= 0)
2273 croak ("Coro::cancel called without coro object,");
2274
2275 coro = SvSTATE (arg [0]);
2276 coro_hv = coro->hv;
2277
2278 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2279
2280 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2281 {
2282 /* coro currently busy cancelling something, so just notify it */
2283 coro->slf_frame.data = (void *)coro;
2284
2285 frame->prepare = prepare_nop;
2286 frame->check = slf_check_nop;
2287 }
2288 else if (coro_hv == (HV *)SvRV (coro_current))
2289 {
2290 /* cancelling the current coro is allowed, and equals terminate */
2291 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2292 }
2293 else
2294 {
2295 struct coro *self = SvSTATE_current;
2296
2297 if (!self)
2298 croak ("Coro::cancel called outside of thread content,");
2299
2300 /* otherwise we cancel directly, purely for speed reasons
2301 * unfortunately, this requires some magic trickery, as
2302 * somebody else could cancel us, so we have to fight the cancellation.
2303 * this is ugly, and hopefully fully worth the extra speed.
2304 * besides, I can't get the slow-but-safe version working...
2305 */
2306 slf_frame.data = 0;
2307 self->flags |= CF_NOCANCEL;
2308 coro_state_destroy (aTHX_ coro);
2309 self->flags &= ~CF_NOCANCEL;
2310
2311 if (slf_frame.data)
2312 {
2313 /* while we were busy we have been cancelled, so terminate */
2314 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2315 }
2316 else
2317 {
2318 frame->prepare = prepare_nop;
2319 frame->check = slf_check_nop;
2320 }
2321 }
2322}
2323
2324static int
2325slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2326{
2327 frame->prepare = 0;
2328 coro_unwind_stacks (aTHX);
2329
2330 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2331
2332 return 1;
2333}
2334
2335static int
2336safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2337{
2338 if (coro->cctx)
2339 croak ("coro inside C callback, unable to cancel at this time, caught");
2340
2341 if (coro->flags & CF_NEW)
2342 {
2343 coro_set_status (aTHX_ coro, arg, items);
2344 coro_state_destroy (aTHX_ coro);
2345 }
2346 else
2347 {
2348 if (!coro->slf_frame.prepare)
2349 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2350
2351 slf_destroy (aTHX_ coro);
2352
2353 coro_set_status (aTHX_ coro, arg, items);
2354 coro->slf_frame.prepare = prepare_nop;
2355 coro->slf_frame.check = slf_check_safe_cancel;
2356
2357 api_ready (aTHX_ (SV *)coro->hv);
2358 }
2359
2360 return 1;
2361}
2362
2363/*****************************************************************************/
2364/* async pool handler */
2365
2366static int
2367slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2368{
2369 HV *hv = (HV *)SvRV (coro_current);
2370 struct coro *coro = (struct coro *)frame->data;
2371
2372 if (!coro->invoke_cb)
2373 return 1; /* loop till we have invoke */
2374 else
2375 {
2376 hv_store (hv, "desc", sizeof ("desc") - 1,
2377 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2378
2379 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2380
2381 {
2382 dSP;
2383 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2384 PUTBACK;
2385 }
2386
2387 SvREFCNT_dec (GvAV (PL_defgv));
2388 GvAV (PL_defgv) = coro->invoke_av;
2389 coro->invoke_av = 0;
2390
2391 return 0;
2392 }
2393}
2394
2395static void
2396slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2397{
2398 HV *hv = (HV *)SvRV (coro_current);
2399 struct coro *coro = SvSTATE_hv ((SV *)hv);
2400
2401 if (ecb_expect_true (coro->saved_deffh))
2402 {
2403 /* subsequent iteration */
2404 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2405 coro->saved_deffh = 0;
2406
2407 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2408 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2409 {
2410 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2411 return;
2412 }
2413 else
2414 {
2415 av_clear (GvAV (PL_defgv));
2416 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2417
2418 coro->prio = 0;
2419
2420 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2421 api_trace (aTHX_ coro_current, 0);
2422
2423 frame->prepare = prepare_schedule;
2424 av_push (av_async_pool, SvREFCNT_inc (hv));
2425 }
2426 }
2427 else
2428 {
2429 /* first iteration, simply fall through */
2430 frame->prepare = prepare_nop;
2431 }
2432
2433 frame->check = slf_check_pool_handler;
2434 frame->data = (void *)coro;
2435}
2436
2437/*****************************************************************************/
2438/* rouse callback */
2439
2440#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2441
2442static void
2443coro_rouse_callback (pTHX_ CV *cv)
2444{
2445 dXSARGS;
2446 SV *data = (SV *)S_GENSUB_ARG;
2447
2448 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2449 {
2450 /* first call, set args */
2451 SV *coro = SvRV (data);
2452 AV *av = newAV ();
2453
2454 SvRV_set (data, (SV *)av);
2455
2456 /* better take a full copy of the arguments */
2457 while (items--)
2458 av_store (av, items, newSVsv (ST (items)));
2459
2460 api_ready (aTHX_ coro);
2461 SvREFCNT_dec (coro);
2462 }
2463
2464 XSRETURN_EMPTY;
2465}
2466
2467static int
2468slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2469{
2470 SV *data = (SV *)frame->data;
2471
2472 if (CORO_THROW)
2473 return 0;
2474
2475 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2476 return 1;
2477
2478 /* now push all results on the stack */
2479 {
2480 dSP;
2481 AV *av = (AV *)SvRV (data);
2482 int i;
2483
2484 EXTEND (SP, AvFILLp (av) + 1);
2485 for (i = 0; i <= AvFILLp (av); ++i)
2486 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2487
2488 /* we have stolen the elements, so set length to zero and free */
2489 AvFILLp (av) = -1;
2490 av_undef (av);
2491
2492 PUTBACK;
2493 }
2494
2495 return 0;
2496}
2497
2498static void
2499slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2500{
2501 SV *cb;
2502
2503 if (items)
2504 cb = arg [0];
2505 else
2506 {
2507 struct coro *coro = SvSTATE_current;
2508
2509 if (!coro->rouse_cb)
2510 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2511
2512 cb = sv_2mortal (coro->rouse_cb);
2513 coro->rouse_cb = 0;
2514 }
2515
2516 if (!SvROK (cb)
2517 || SvTYPE (SvRV (cb)) != SVt_PVCV
2518 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2519 croak ("Coro::rouse_wait called with illegal callback argument,");
2520
2521 {
2522 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2523 SV *data = (SV *)S_GENSUB_ARG;
2524
2525 frame->data = (void *)data;
2526 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2527 frame->check = slf_check_rouse_wait;
2528 }
2529}
2530
2531static SV *
2532coro_new_rouse_cb (pTHX)
2533{
2534 HV *hv = (HV *)SvRV (coro_current);
2535 struct coro *coro = SvSTATE_hv (hv);
2536 SV *data = newRV_inc ((SV *)hv);
2537 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2538
2539 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2540 SvREFCNT_dec (data); /* magicext increases the refcount */
2541
2542 SvREFCNT_dec (coro->rouse_cb);
2543 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2544
2545 return cb;
2546}
2547
2548/*****************************************************************************/
2549/* schedule-like-function opcode (SLF) */
2550
2551static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2552static const CV *slf_cv;
2553static SV **slf_argv;
2554static int slf_argc, slf_arga; /* count, allocated */
2555static I32 slf_ax; /* top of stack, for restore */
2556
2557/* this restores the stack in the case we patched the entersub, to */
2558/* recreate the stack frame as perl will on following calls */
2559/* since entersub cleared the stack */
2560static OP *
2561pp_restore (pTHX)
2562{
2563 int i;
2564 SV **SP = PL_stack_base + slf_ax;
2565
2566 PUSHMARK (SP);
2567
2568 EXTEND (SP, slf_argc + 1);
2569
2570 for (i = 0; i < slf_argc; ++i)
2571 PUSHs (sv_2mortal (slf_argv [i]));
2572
2573 PUSHs ((SV *)CvGV (slf_cv));
2574
2575 RETURNOP (slf_restore.op_first);
2576}
2577
2578static void
2579slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2580{
2581 SV **arg = (SV **)slf_frame.data;
2582
2583 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2584}
2585
2586static void
2587slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2588{
2589 if (items != 2)
2590 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2591
2592 frame->prepare = slf_prepare_transfer;
2593 frame->check = slf_check_nop;
2594 frame->data = (void *)arg; /* let's hope it will stay valid */
2595}
2596
2597static void
2598slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2599{
2600 frame->prepare = prepare_schedule;
2601 frame->check = slf_check_nop;
2602}
2603
2604static void
2605slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2606{
2607 struct coro *next = (struct coro *)slf_frame.data;
2608
2609 SvREFCNT_inc_NN (next->hv);
2610 prepare_schedule_to (aTHX_ ta, next);
2611}
2612
2613static void
2614slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2615{
2616 if (!items)
2617 croak ("Coro::schedule_to expects a coroutine argument, caught");
2618
2619 frame->data = (void *)SvSTATE (arg [0]);
2620 frame->prepare = slf_prepare_schedule_to;
2621 frame->check = slf_check_nop;
2622}
2623
2624static void
2625slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2626{
2627 api_ready (aTHX_ SvRV (coro_current));
2628
2629 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2630}
2631
2632static void
2633slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2634{
2635 frame->prepare = prepare_cede;
2636 frame->check = slf_check_nop;
2637}
2638
2639static void
2640slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2641{
2642 frame->prepare = prepare_cede_notself;
2643 frame->check = slf_check_nop;
2644}
2645
2646/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2647static void
2648slf_destroy (pTHX_ struct coro *coro)
2649{
2650 struct CoroSLF frame = coro->slf_frame;
2651
2652 /*
2653 * The on_destroy below most likely is from an SLF call.
2654 * Since by definition the SLF call will not finish when we destroy
2655 * the coro, we will have to force-finish it here, otherwise
2656 * cleanup functions cannot call SLF functions.
2657 */
2658 coro->slf_frame.prepare = 0;
2659
2660 /* this callback is reserved for slf functions needing to do cleanup */
2661 if (frame.destroy && frame.prepare && !PL_dirty)
2662 frame.destroy (aTHX_ &frame);
2663}
2664
2665/*
2666 * these not obviously related functions are all rolled into one
2667 * function to increase chances that they all will call transfer with the same
2668 * stack offset
2669 * SLF stands for "schedule-like-function".
2670 */
2671static OP *
2672pp_slf (pTHX)
2673{
2674 I32 checkmark; /* mark SP to see how many elements check has pushed */
2675
2676 /* set up the slf frame, unless it has already been set-up */
2677 /* the latter happens when a new coro has been started */
2678 /* or when a new cctx was attached to an existing coroutine */
2679 if (ecb_expect_true (!slf_frame.prepare))
2680 {
2681 /* first iteration */
2682 dSP;
2683 SV **arg = PL_stack_base + TOPMARK + 1;
2684 int items = SP - arg; /* args without function object */
2685 SV *gv = *sp;
2686
2687 /* do a quick consistency check on the "function" object, and if it isn't */
2688 /* for us, divert to the real entersub */
2689 if (SvTYPE (gv) != SVt_PVGV
2690 || !GvCV (gv)
2691 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2692 return PL_ppaddr[OP_ENTERSUB](aTHX);
2693
2694 if (!(PL_op->op_flags & OPf_STACKED))
2695 {
2696 /* ampersand-form of call, use @_ instead of stack */
2697 AV *av = GvAV (PL_defgv);
2698 arg = AvARRAY (av);
2699 items = AvFILLp (av) + 1;
2700 }
2701
2702 /* now call the init function, which needs to set up slf_frame */
2703 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2704 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2705
2706 /* pop args */
2707 SP = PL_stack_base + POPMARK;
2708
2709 PUTBACK;
2710 }
2711
2712 /* now that we have a slf_frame, interpret it! */
2713 /* we use a callback system not to make the code needlessly */
2714 /* complicated, but so we can run multiple perl coros from one cctx */
2715
2716 do
2717 {
2718 struct coro_transfer_args ta;
2719
2720 slf_frame.prepare (aTHX_ &ta);
2721 TRANSFER (ta, 0);
2722
2723 checkmark = PL_stack_sp - PL_stack_base;
2724 }
2725 while (slf_frame.check (aTHX_ &slf_frame));
2726
2727 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2728
2729 /* exception handling */
2730 if (ecb_expect_false (CORO_THROW))
2731 {
2732 SV *exception = sv_2mortal (CORO_THROW);
2733
2734 CORO_THROW = 0;
2735 sv_setsv (ERRSV, exception);
2736 croak (0);
2737 }
2738
2739 /* return value handling - mostly like entersub */
2740 /* make sure we put something on the stack in scalar context */
2741 if (GIMME_V == G_SCALAR
2742 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2743 {
2744 dSP;
2745 SV **bot = PL_stack_base + checkmark;
2746
2747 if (sp == bot) /* too few, push undef */
2748 bot [1] = &PL_sv_undef;
2749 else /* too many, take last one */
2750 bot [1] = *sp;
2751
2752 SP = bot + 1;
2753
2754 PUTBACK;
2755 }
2756
2757 return NORMAL;
2758}
2759
2760static void
2761api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2762{
2763 int i;
2764 SV **arg = PL_stack_base + ax;
2765 int items = PL_stack_sp - arg + 1;
2766
2767 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2768
2769 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2770 && PL_op->op_ppaddr != pp_slf)
2771 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2772
2773 CvFLAGS (cv) |= CVf_SLF;
2774 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2775 slf_cv = cv;
2776
2777 /* we patch the op, and then re-run the whole call */
2778 /* we have to put the same argument on the stack for this to work */
2779 /* and this will be done by pp_restore */
2780 slf_restore.op_next = (OP *)&slf_restore;
2781 slf_restore.op_type = OP_CUSTOM;
2782 slf_restore.op_ppaddr = pp_restore;
2783 slf_restore.op_first = PL_op;
2784
2785 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2786
2787 if (PL_op->op_flags & OPf_STACKED)
2788 {
2789 if (items > slf_arga)
2790 {
2791 slf_arga = items;
2792 Safefree (slf_argv);
2793 New (0, slf_argv, slf_arga, SV *);
2794 }
2795
2796 slf_argc = items;
2797
2798 for (i = 0; i < items; ++i)
2799 slf_argv [i] = SvREFCNT_inc (arg [i]);
2800 }
2801 else
2802 slf_argc = 0;
2803
2804 PL_op->op_ppaddr = pp_slf;
2805 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2806
2807 PL_op = (OP *)&slf_restore;
2808}
2809
2810/*****************************************************************************/
2811/* dynamic wind */
2812
2813static void
2814on_enterleave_call (pTHX_ SV *cb)
2815{
2816 dSP;
2817
2818 PUSHSTACK;
2819
2820 PUSHMARK (SP);
2821 PUTBACK;
2822 call_sv (cb, G_VOID | G_DISCARD);
2823 SPAGAIN;
2824
2825 POPSTACK;
2826}
2827
2828static SV *
2829coro_avp_pop_and_free (pTHX_ AV **avp)
2830{
2831 AV *av = *avp;
2832 SV *res = av_pop (av);
2833
2834 if (AvFILLp (av) < 0)
2835 {
2836 *avp = 0;
2837 SvREFCNT_dec (av);
2838 }
2839
2840 return res;
2841}
2842
2843static void
2844coro_pop_on_enter (pTHX_ void *coro)
2845{
2846 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2847 SvREFCNT_dec (cb);
2848}
2849
2850static void
2851coro_pop_on_leave (pTHX_ void *coro)
2852{
2853 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2854 on_enterleave_call (aTHX_ sv_2mortal (cb));
2855}
2856
2857static void
2858enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2859{
2860 if (!hook)
2861 return;
2862
2863 if (!*avp)
2864 {
2865 *avp = newAV ();
2866 AvREAL_off (*avp);
2867 }
2868
2869 av_push (*avp, (SV *)hook);
2870 av_push (*avp, (SV *)arg);
2871}
2872
2873static void
2874enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2875{
2876 AV *av = *avp;
2877 int i;
2878
2879 if (!av)
2880 return;
2881
2882 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2883 if (AvARRAY (av)[i] == (SV *)hook)
2884 {
2885 if (execute)
2886 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2887
2888 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2889 av_pop (av);
2890 av_pop (av);
2891 break;
2892 }
2893
2894 if (AvFILLp (av) >= 0)
2895 {
2896 *avp = 0;
2897 SvREFCNT_dec_NN (av);
2898 }
2899}
2900
2901static void
2902api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2903{
2904 struct coro *coro = SvSTATE (coro_sv);
2905
2906 if (SvSTATE_current == coro)
2907 if (enter)
2908 enter (aTHX_ enter_arg);
2909
2910 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2911 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2912}
2913
2914static void
2915api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2916{
2917 struct coro *coro = SvSTATE (coro_sv);
2918
2919 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2920 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2921}
2922
2923static void
2924savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2925{
2926 struct coro *coro = SvSTATE_current;
2927
2928 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2929}
2930
2931static void
2932savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2933{
2934 struct coro *coro = SvSTATE_current;
2935
2936 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2937}
2938
2939static void
2940api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2941{
2942 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2943
2944 /* this ought to be much cheaper than malloc + a single destructor call */
2945 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2946 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2947}
2948
1699/*****************************************************************************/ 2949/*****************************************************************************/
1700/* PerlIO::cede */ 2950/* PerlIO::cede */
1701 2951
1702typedef struct 2952typedef struct
1703{ 2953{
1704 PerlIOBuf base; 2954 PerlIOBuf base;
1705 NV next, every; 2955 NV next, every;
1706} PerlIOCede; 2956} PerlIOCede;
1707 2957
1708static IV 2958static IV ecb_cold
1709PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2959PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1710{ 2960{
1711 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2961 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1712 2962
1713 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2963 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1714 self->next = nvtime () + self->every; 2964 self->next = nvtime () + self->every;
1715 2965
1716 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2966 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1717} 2967}
1718 2968
1719static SV * 2969static SV * ecb_cold
1720PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2970PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1721{ 2971{
1722 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2972 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1723 2973
1724 return newSVnv (self->every); 2974 return newSVnv (self->every);
… …
1770 PerlIOBuf_get_cnt, 3020 PerlIOBuf_get_cnt,
1771 PerlIOBuf_set_ptrcnt, 3021 PerlIOBuf_set_ptrcnt,
1772}; 3022};
1773 3023
1774/*****************************************************************************/ 3024/*****************************************************************************/
3025/* Coro::Semaphore & Coro::Signal */
1775 3026
1776static const CV *slf_cv; /* for quick consistency check */
1777
1778static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1779static SV *slf_arg0;
1780static SV *slf_arg1;
1781static SV *slf_arg2;
1782
1783/* this restores the stack in the case we patched the entersub, to */
1784/* recreate the stack frame as perl will on following calls */
1785/* since entersub cleared the stack */
1786static OP * 3027static SV *
1787pp_restore (pTHX) 3028coro_waitarray_new (pTHX_ int count)
1788{ 3029{
1789 dSP; 3030 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3031 AV *av = newAV ();
3032 SV **ary;
1790 3033
1791 PUSHMARK (SP); 3034 /* unfortunately, building manually saves memory */
3035 Newx (ary, 2, SV *);
3036 AvALLOC (av) = ary;
3037#if PERL_VERSION_ATLEAST (5,10,0)
3038 AvARRAY (av) = ary;
3039#else
3040 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3041 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3042 SvPVX ((SV *)av) = (char *)ary;
3043#endif
3044 AvMAX (av) = 1;
3045 AvFILLp (av) = 0;
3046 ary [0] = newSViv (count);
1792 3047
1793 EXTEND (SP, 3); 3048 return newRV_noinc ((SV *)av);
1794 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1795 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1796 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1797 PUSHs ((SV *)CvGV (slf_cv));
1798
1799 RETURNOP (slf_restore.op_first);
1800} 3049}
1801 3050
1802static void 3051/* semaphore */
1803slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1804{
1805 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1806}
1807 3052
1808static void 3053static void
1809slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1810{
1811 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1812
1813 frame->prepare = slf_prepare_set_stacklevel;
1814 frame->check = slf_check_nop;
1815 frame->data = (void *)SvIV (arg [0]);
1816}
1817
1818static void
1819slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1820{
1821 SV **arg = (SV **)slf_frame.data;
1822
1823 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1824}
1825
1826static void
1827slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1828{
1829 if (items != 2)
1830 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1831
1832 frame->prepare = slf_prepare_transfer;
1833 frame->check = slf_check_nop;
1834 frame->data = (void *)arg; /* let's hope it will stay valid */
1835}
1836
1837static void
1838slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 frame->prepare = prepare_schedule;
1841 frame->check = slf_check_nop;
1842}
1843
1844static void
1845slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1846{
1847 frame->prepare = prepare_cede;
1848 frame->check = slf_check_nop;
1849}
1850
1851static void
1852slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1853{
1854 frame->prepare = prepare_cede_notself;
1855 frame->check = slf_check_nop;
1856}
1857
1858/* we hijack an hopefully unused CV flag for our purposes */
1859#define CVf_SLF 0x4000
1860
1861/*
1862 * these not obviously related functions are all rolled into one
1863 * function to increase chances that they all will call transfer with the same
1864 * stack offset
1865 * SLF stands for "schedule-like-function".
1866 */
1867static OP *
1868pp_slf (pTHX)
1869{
1870 I32 checkmark; /* mark SP to see how many elements check has pushed */
1871
1872 /* set up the slf frame, unless it has already been set-up */
1873 /* the latter happens when a new coro has been started */
1874 /* or when a new cctx was attached to an existing coroutine */
1875 if (expect_true (!slf_frame.prepare))
1876 {
1877 /* first iteration */
1878 dSP;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 SV *gv = *sp;
1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK;
1900
1901 /* now call the init function, which needs to set up slf_frame */
1902 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1903 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1904 }
1905
1906 /* now that we have a slf_frame, interpret it! */
1907 /* we use a callback system not to make the code needlessly */
1908 /* complicated, but so we can run multiple perl coros from one cctx */
1909
1910 do
1911 {
1912 struct coro_transfer_args ta;
1913
1914 slf_frame.prepare (aTHX_ &ta);
1915 TRANSFER (ta, 0);
1916
1917 checkmark = PL_stack_sp - PL_stack_base;
1918 }
1919 while (slf_frame.check (aTHX_ &slf_frame));
1920
1921 {
1922 dSP;
1923 SV **bot = PL_stack_base + checkmark;
1924 int gimme = GIMME_V;
1925
1926 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1927
1928 /* make sure we put something on the stack in scalar context */
1929 if (gimme == G_SCALAR)
1930 {
1931 if (sp == bot)
1932 XPUSHs (&PL_sv_undef);
1933
1934 SP = bot + 1;
1935 }
1936
1937 PUTBACK;
1938 }
1939
1940 return NORMAL;
1941}
1942
1943static void
1944api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1945{
1946 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1947
1948 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1949 && PL_op->op_ppaddr != pp_slf)
1950 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1951
1952 if (items > 3)
1953 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1954
1955 CvFLAGS (cv) |= CVf_SLF;
1956 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1957 slf_cv = cv;
1958
1959 /* we patch the op, and then re-run the whole call */
1960 /* we have to put the same argument on the stack for this to work */
1961 /* and this will be done by pp_restore */
1962 slf_restore.op_next = (OP *)&slf_restore;
1963 slf_restore.op_type = OP_CUSTOM;
1964 slf_restore.op_ppaddr = pp_restore;
1965 slf_restore.op_first = PL_op;
1966
1967 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1968 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1969 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1970
1971 PL_op->op_ppaddr = pp_slf;
1972
1973 PL_op = (OP *)&slf_restore;
1974}
1975
1976/*****************************************************************************/
1977
1978static void
1979coro_semaphore_adjust (AV *av, int adjust) 3054coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1980{ 3055{
1981 SV *count_sv = AvARRAY (av)[0]; 3056 SV *count_sv = AvARRAY (av)[0];
1982 IV count = SvIVX (count_sv); 3057 IV count = SvIVX (count_sv);
1983 3058
1984 count += adjust; 3059 count += adjust;
1985 SvIVX (count_sv) = count; 3060 SvIVX (count_sv) = count;
1986 3061
1987 /* now wake up as many waiters as possible */ 3062 /* now wake up as many waiters as are expected to lock */
1988 while (count > 0 && AvFILLp (av) >= count) 3063 while (count > 0 && AvFILLp (av) > 0)
1989 { 3064 {
1990 SV *cb; 3065 SV *cb;
1991 3066
1992 /* swap first two elements so we can shift a waiter */ 3067 /* swap first two elements so we can shift a waiter */
1993 AvARRAY (av)[0] = AvARRAY (av)[1]; 3068 AvARRAY (av)[0] = AvARRAY (av)[1];
1994 AvARRAY (av)[1] = count_sv; 3069 AvARRAY (av)[1] = count_sv;
1995 cb = av_shift (av); 3070 cb = av_shift (av);
1996 3071
1997 if (SvOBJECT (cb)) 3072 if (SvOBJECT (cb))
3073 {
1998 api_ready (aTHX_ cb); 3074 api_ready (aTHX_ cb);
1999 else 3075 --count;
2000 croak ("callbacks not yet supported"); 3076 }
3077 else if (SvTYPE (cb) == SVt_PVCV)
3078 {
3079 dSP;
3080 PUSHMARK (SP);
3081 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3082 PUTBACK;
3083 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3084 }
2001 3085
2002 SvREFCNT_dec (cb); 3086 SvREFCNT_dec_NN (cb);
2003
2004 --count;
2005 } 3087 }
2006} 3088}
2007 3089
2008static void 3090static void
2009coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3091coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2010{ 3092{
2011 /* call $sem->adjust (0) to possibly wake up some waiters */ 3093 /* call $sem->adjust (0) to possibly wake up some other waiters */
2012 coro_semaphore_adjust ((AV *)coro->slf_frame.data, 0); 3094 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2013} 3095}
2014 3096
2015static int 3097static int
2016slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3098slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2017{ 3099{
2018 AV *av = (AV *)frame->data; 3100 AV *av = (AV *)frame->data;
2019 SV *count_sv = AvARRAY (av)[0]; 3101 SV *count_sv = AvARRAY (av)[0];
3102 SV *coro_hv = SvRV (coro_current);
2020 3103
3104 frame->destroy = 0;
3105
3106 /* if we are about to throw, don't actually acquire the lock, just throw */
3107 if (ecb_expect_false (CORO_THROW))
3108 {
3109 /* we still might be responsible for the semaphore, so wake up others */
3110 coro_semaphore_adjust (aTHX_ av, 0);
3111
3112 return 0;
3113 }
2021 if (SvIVX (count_sv) > 0) 3114 else if (SvIVX (count_sv) > 0)
2022 { 3115 {
2023 SvSTATE (coro_current)->on_destroy = 0; 3116 if (acquire)
2024 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3117 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3118 else
3119 coro_semaphore_adjust (aTHX_ av, 0);
3120
2025 return 0; 3121 return 0;
2026 } 3122 }
2027 else 3123 else
2028 { 3124 {
2029 int i; 3125 int i;
2030 /* if we were woken up but can't down, we look through the whole */ 3126 /* if we were woken up but can't down, we look through the whole */
2031 /* waiters list and only add us if we aren't in there already */ 3127 /* waiters list and only add us if we aren't in there already */
2032 /* this avoids some degenerate memory usage cases */ 3128 /* this avoids some degenerate memory usage cases */
2033 3129 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2034 for (i = 1; i <= AvFILLp (av); ++i)
2035 if (AvARRAY (av)[i] == SvRV (coro_current)) 3130 if (AvARRAY (av)[i] == coro_hv)
2036 return 1; 3131 return 1;
2037 3132
2038 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3133 av_push (av, SvREFCNT_inc (coro_hv));
2039 return 1; 3134 return 1;
2040 } 3135 }
2041} 3136}
2042 3137
2043static void 3138static int
3139slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3140{
3141 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3142}
3143
3144static int
3145slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3146{
3147 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3148}
3149
3150static void
2044slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3151slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2045{ 3152{
2046 AV *av = (AV *)SvRV (arg [0]); 3153 AV *av = (AV *)SvRV (arg [0]);
2047 3154
2048 if (SvIVX (AvARRAY (av)[0]) > 0) 3155 if (SvIVX (AvARRAY (av)[0]) > 0)
2049 { 3156 {
… …
2054 { 3161 {
2055 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3162 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2056 3163
2057 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3164 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2058 frame->prepare = prepare_schedule; 3165 frame->prepare = prepare_schedule;
2059
2060 /* to avoid race conditions when a woken-up coro gets terminated */ 3166 /* to avoid race conditions when a woken-up coro gets terminated */
2061 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3167 /* we arrange for a temporary on_destroy that calls adjust (0) */
2062 SvSTATE (coro_current)->on_destroy = coro_semaphore_on_destroy; 3168 frame->destroy = coro_semaphore_destroy;
2063 } 3169 }
3170}
2064 3171
3172static void
3173slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3174{
3175 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 3176 frame->check = slf_check_semaphore_down;
3177}
2066 3178
3179static void
3180slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3181{
3182 if (items >= 2)
3183 {
3184 /* callback form */
3185 AV *av = (AV *)SvRV (arg [0]);
3186 SV *cb_cv = s_get_cv_croak (arg [1]);
3187
3188 av_push (av, SvREFCNT_inc_NN (cb_cv));
3189
3190 if (SvIVX (AvARRAY (av)[0]) > 0)
3191 coro_semaphore_adjust (aTHX_ av, 0);
3192
3193 frame->prepare = prepare_nop;
3194 frame->check = slf_check_nop;
3195 }
3196 else
3197 {
3198 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3199 frame->check = slf_check_semaphore_wait;
3200 }
3201}
3202
3203/* signal */
3204
3205static void
3206coro_signal_wake (pTHX_ AV *av, int count)
3207{
3208 SvIVX (AvARRAY (av)[0]) = 0;
3209
3210 /* now signal count waiters */
3211 while (count > 0 && AvFILLp (av) > 0)
3212 {
3213 SV *cb;
3214
3215 /* swap first two elements so we can shift a waiter */
3216 cb = AvARRAY (av)[0];
3217 AvARRAY (av)[0] = AvARRAY (av)[1];
3218 AvARRAY (av)[1] = cb;
3219
3220 cb = av_shift (av);
3221
3222 if (SvTYPE (cb) == SVt_PVCV)
3223 {
3224 dSP;
3225 PUSHMARK (SP);
3226 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3227 PUTBACK;
3228 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3229 }
3230 else
3231 {
3232 api_ready (aTHX_ cb);
3233 sv_setiv (cb, 0); /* signal waiter */
3234 }
3235
3236 SvREFCNT_dec_NN (cb);
3237
3238 --count;
3239 }
3240}
3241
3242static int
3243slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3244{
3245 /* if we are about to throw, also stop waiting */
3246 return SvROK ((SV *)frame->data) && !CORO_THROW;
3247}
3248
3249static void
3250slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3251{
3252 AV *av = (AV *)SvRV (arg [0]);
3253
3254 if (items >= 2)
3255 {
3256 SV *cb_cv = s_get_cv_croak (arg [1]);
3257 av_push (av, SvREFCNT_inc_NN (cb_cv));
3258
3259 if (SvIVX (AvARRAY (av)[0]))
3260 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3261
3262 frame->prepare = prepare_nop;
3263 frame->check = slf_check_nop;
3264 }
3265 else if (SvIVX (AvARRAY (av)[0]))
3266 {
3267 SvIVX (AvARRAY (av)[0]) = 0;
3268 frame->prepare = prepare_nop;
3269 frame->check = slf_check_nop;
3270 }
3271 else
3272 {
3273 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3274
3275 av_push (av, waiter);
3276
3277 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3278 frame->prepare = prepare_schedule;
3279 frame->check = slf_check_signal_wait;
3280 }
2067} 3281}
2068 3282
2069/*****************************************************************************/ 3283/*****************************************************************************/
3284/* Coro::AIO */
2070 3285
2071#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3286#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2072 3287
2073/* create a closure from XS, returns a code reference */ 3288/* helper storage struct */
2074/* the arg can be accessed via GENSUB_ARG from the callback */ 3289struct io_state
2075/* the callback must use dXSARGS/XSRETURN */ 3290{
3291 int errorno;
3292 I32 laststype; /* U16 in 5.10.0 */
3293 int laststatval;
3294 Stat_t statcache;
3295};
3296
3297static void
3298coro_aio_callback (pTHX_ CV *cv)
3299{
3300 dXSARGS;
3301 AV *state = (AV *)S_GENSUB_ARG;
3302 SV *coro = av_pop (state);
3303 SV *data_sv = newSV (sizeof (struct io_state));
3304
3305 av_extend (state, items - 1);
3306
3307 sv_upgrade (data_sv, SVt_PV);
3308 SvCUR_set (data_sv, sizeof (struct io_state));
3309 SvPOK_only (data_sv);
3310
3311 {
3312 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3313
3314 data->errorno = errno;
3315 data->laststype = PL_laststype;
3316 data->laststatval = PL_laststatval;
3317 data->statcache = PL_statcache;
3318 }
3319
3320 /* now build the result vector out of all the parameters and the data_sv */
3321 {
3322 int i;
3323
3324 for (i = 0; i < items; ++i)
3325 av_push (state, SvREFCNT_inc_NN (ST (i)));
3326 }
3327
3328 av_push (state, data_sv);
3329
3330 api_ready (aTHX_ coro);
3331 SvREFCNT_dec_NN (coro);
3332 SvREFCNT_dec_NN ((AV *)state);
3333}
3334
3335static int
3336slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3337{
3338 AV *state = (AV *)frame->data;
3339
3340 /* if we are about to throw, return early */
3341 /* this does not cancel the aio request, but at least */
3342 /* it quickly returns */
3343 if (CORO_THROW)
3344 return 0;
3345
3346 /* one element that is an RV? repeat! */
3347 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3348 return 1;
3349
3350 /* restore status */
3351 {
3352 SV *data_sv = av_pop (state);
3353 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3354
3355 errno = data->errorno;
3356 PL_laststype = data->laststype;
3357 PL_laststatval = data->laststatval;
3358 PL_statcache = data->statcache;
3359
3360 SvREFCNT_dec_NN (data_sv);
3361 }
3362
3363 /* push result values */
3364 {
3365 dSP;
3366 int i;
3367
3368 EXTEND (SP, AvFILLp (state) + 1);
3369 for (i = 0; i <= AvFILLp (state); ++i)
3370 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3371
3372 PUTBACK;
3373 }
3374
3375 return 0;
3376}
3377
3378static void
3379slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3380{
3381 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3382 SV *coro_hv = SvRV (coro_current);
3383 struct coro *coro = SvSTATE_hv (coro_hv);
3384
3385 /* put our coroutine id on the state arg */
3386 av_push (state, SvREFCNT_inc_NN (coro_hv));
3387
3388 /* first see whether we have a non-zero priority and set it as AIO prio */
3389 if (coro->prio)
3390 {
3391 dSP;
3392
3393 static SV *prio_cv;
3394 static SV *prio_sv;
3395
3396 if (ecb_expect_false (!prio_cv))
3397 {
3398 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3399 prio_sv = newSViv (0);
3400 }
3401
3402 PUSHMARK (SP);
3403 sv_setiv (prio_sv, coro->prio);
3404 XPUSHs (prio_sv);
3405
3406 PUTBACK;
3407 call_sv (prio_cv, G_VOID | G_DISCARD);
3408 }
3409
3410 /* now call the original request */
3411 {
3412 dSP;
3413 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3414 int i;
3415
3416 PUSHMARK (SP);
3417
3418 /* first push all args to the stack */
3419 EXTEND (SP, items + 1);
3420
3421 for (i = 0; i < items; ++i)
3422 PUSHs (arg [i]);
3423
3424 /* now push the callback closure */
3425 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3426
3427 /* now call the AIO function - we assume our request is uncancelable */
3428 PUTBACK;
3429 call_sv ((SV *)req, G_VOID | G_DISCARD);
3430 }
3431
3432 /* now that the request is going, we loop till we have a result */
3433 frame->data = (void *)state;
3434 frame->prepare = prepare_schedule;
3435 frame->check = slf_check_aio_req;
3436}
3437
3438static void
3439coro_aio_req_xs (pTHX_ CV *cv)
3440{
3441 dXSARGS;
3442
3443 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3444
3445 XSRETURN_EMPTY;
3446}
3447
3448/*****************************************************************************/
3449
3450#if CORO_CLONE
3451# include "clone.c"
3452#endif
3453
3454/*****************************************************************************/
3455
2076static SV * 3456static SV *
2077gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3457coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2078{ 3458{
2079 CV *cv = (CV *)NEWSV (0, 0); 3459 SV *coro_sv;
3460 struct coro *coro;
3461 MAGIC *mg;
3462 HV *hv;
3463 SV *cb;
3464 int i;
2080 3465
2081 sv_upgrade ((SV *)cv, SVt_PVCV); 3466 if (argc > 0)
3467 {
3468 cb = s_get_cv_croak (argv [0]);
2082 3469
2083 CvANON_on (cv); 3470 if (!is_coro)
2084 CvISXSUB_on (cv); 3471 {
2085 CvXSUB (cv) = xsub; 3472 if (CvISXSUB (cb))
2086 GENSUB_ARG = arg; 3473 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2087 3474
2088 return newRV_noinc ((SV *)cv); 3475 if (!CvROOT (cb))
2089} 3476 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3477 }
3478 }
2090 3479
2091/*****************************************************************************/ 3480 Newz (0, coro, 1, struct coro);
3481 coro->args = newAV ();
3482 coro->flags = CF_NEW;
3483
3484 if (coro_first) coro_first->prev = coro;
3485 coro->next = coro_first;
3486 coro_first = coro;
3487
3488 coro->hv = hv = newHV ();
3489 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3490 mg->mg_flags |= MGf_DUP;
3491 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3492
3493 if (argc > 0)
3494 {
3495 av_extend (coro->args, argc + is_coro - 1);
3496
3497 if (is_coro)
3498 {
3499 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3500 cb = (SV *)cv_coro_run;
3501 }
3502
3503 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3504
3505 for (i = 1; i < argc; i++)
3506 av_push (coro->args, newSVsv (argv [i]));
3507 }
3508
3509 return coro_sv;
3510}
3511
3512#ifndef __cplusplus
3513ecb_cold XS(boot_Coro__State);
3514#endif
3515
3516#if CORO_JIT
3517
3518static void ecb_noinline ecb_cold
3519pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3520{
3521 dSP;
3522 AV *av = newAV ();
3523
3524 av_store (av, 3, newSVuv (d));
3525 av_store (av, 2, newSVuv (c));
3526 av_store (av, 1, newSVuv (b));
3527 av_store (av, 0, newSVuv (a));
3528
3529 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3530
3531 PUTBACK;
3532}
3533
3534static void ecb_noinline ecb_cold
3535jit_init (pTHX)
3536{
3537 dSP;
3538 SV *load, *save;
3539 char *map_base;
3540 char *load_ptr, *save_ptr;
3541 STRLEN load_len, save_len, map_len;
3542 int count;
3543
3544 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3545
3546 PUSHMARK (SP);
3547 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3548 #include "state.h"
3549 count = call_pv ("Coro::State::_jit", G_ARRAY);
3550 SPAGAIN;
3551
3552 save = POPs; save_ptr = SvPVbyte (save, save_len);
3553 load = POPs; load_ptr = SvPVbyte (load, load_len);
3554
3555 map_len = load_len + save_len + 16;
3556
3557 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3558
3559 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3560
3561 load_perl_slots = (load_save_perl_slots_type)map_base;
3562 memcpy (map_base, load_ptr, load_len);
3563
3564 map_base += (load_len + 15) & ~15;
3565
3566 save_perl_slots = (load_save_perl_slots_type)map_base;
3567 memcpy (map_base, save_ptr, save_len);
3568
3569 /* we are good citizens and try to make the page read-only, so the evil evil */
3570 /* hackers might have it a bit more difficult */
3571 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3572
3573 PUTBACK;
3574 eval_pv ("undef &Coro::State::_jit", 1);
3575}
3576
3577#endif
2092 3578
2093MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3579MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2094 3580
2095PROTOTYPES: DISABLE 3581PROTOTYPES: DISABLE
2096 3582
2097BOOT: 3583BOOT:
2098{ 3584{
3585#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3586#include "state.h"
2099#ifdef USE_ITHREADS 3587#ifdef USE_ITHREADS
2100 MUTEX_INIT (&coro_lock);
2101# if CORO_PTHREAD 3588# if CORO_PTHREAD
2102 coro_thx = PERL_GET_CONTEXT; 3589 coro_thx = PERL_GET_CONTEXT;
2103# endif 3590# endif
2104#endif 3591#endif
2105 BOOT_PAGESIZE; 3592 /* perl defines these to check for existance first, but why it doesn't */
3593 /* just create them one at init time is not clear to me, except for */
3594 /* programs trying to delete them, but... */
3595 /* anyway, we declare this as invalid and make sure they are initialised here */
3596 DEFSV;
3597 ERRSV;
3598
3599 cctx_current = cctx_new_empty ();
2106 3600
2107 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3601 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2108 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3602 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2109 3603
2110 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3604 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2111 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3605 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2112 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3606 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2113 3607
2114 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2115 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3608 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2116 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3609 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2117 3610
2118 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3611 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
2119 3612
… …
2130 3623
2131 { 3624 {
2132 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3625 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2133 3626
2134 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3627 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2135 hv_store_ent (PL_custom_op_names, slf, 3628 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2136 newSVpv ("coro_slf", 0), 0);
2137 3629
2138 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3630 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2139 hv_store_ent (PL_custom_op_descs, slf, 3631 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2140 newSVpv ("coro schedule like function", 0), 0);
2141 } 3632 }
2142 3633
2143 coroapi.ver = CORO_API_VERSION; 3634 coroapi.ver = CORO_API_VERSION;
2144 coroapi.rev = CORO_API_REVISION; 3635 coroapi.rev = CORO_API_REVISION;
2145 3636
… …
2150 coroapi.prepare_nop = prepare_nop; 3641 coroapi.prepare_nop = prepare_nop;
2151 coroapi.prepare_schedule = prepare_schedule; 3642 coroapi.prepare_schedule = prepare_schedule;
2152 coroapi.prepare_cede = prepare_cede; 3643 coroapi.prepare_cede = prepare_cede;
2153 coroapi.prepare_cede_notself = prepare_cede_notself; 3644 coroapi.prepare_cede_notself = prepare_cede_notself;
2154 3645
2155 { 3646 time_init (aTHX);
2156 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2157 3647
2158 if (!svp) croak ("Time::HiRes is required");
2159 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2160
2161 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2162 }
2163
2164 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3648 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3649#if CORO_JIT
3650 PUTBACK;
3651 jit_init (aTHX);
3652 SPAGAIN;
3653#endif
2165} 3654}
2166 3655
2167SV * 3656SV *
2168new (char *klass, ...) 3657new (SV *klass, ...)
3658 ALIAS:
3659 Coro::new = 1
2169 CODE: 3660 CODE:
2170{ 3661 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2171 struct coro *coro; 3662 OUTPUT:
2172 MAGIC *mg;
2173 HV *hv;
2174 int i;
2175
2176 Newz (0, coro, 1, struct coro);
2177 coro->args = newAV ();
2178 coro->flags = CF_NEW;
2179
2180 if (coro_first) coro_first->prev = coro;
2181 coro->next = coro_first;
2182 coro_first = coro;
2183
2184 coro->hv = hv = newHV ();
2185 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2186 mg->mg_flags |= MGf_DUP;
2187 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2188
2189 av_extend (coro->args, items - 1);
2190 for (i = 1; i < items; i++)
2191 av_push (coro->args, newSVsv (ST (i)));
2192}
2193 OUTPUT:
2194 RETVAL 3663 RETVAL
2195
2196void
2197_set_stacklevel (...)
2198 CODE:
2199 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2200 3664
2201void 3665void
2202transfer (...) 3666transfer (...)
2203 PROTOTYPE: $$ 3667 PROTOTYPE: $$
2204 CODE: 3668 CODE:
2205 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3669 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2206 3670
2207bool 3671SV *
2208_destroy (SV *coro_sv) 3672clone (Coro::State coro)
2209 CODE: 3673 CODE:
2210 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3674{
3675#if CORO_CLONE
3676 struct coro *ncoro = coro_clone (aTHX_ coro);
3677 MAGIC *mg;
3678 /* TODO: too much duplication */
3679 ncoro->hv = newHV ();
3680 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3681 mg->mg_flags |= MGf_DUP;
3682 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3683#else
3684 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3685#endif
3686}
2211 OUTPUT: 3687 OUTPUT:
2212 RETVAL 3688 RETVAL
2213
2214void
2215_exit (int code)
2216 PROTOTYPE: $
2217 CODE:
2218 _exit (code);
2219 3689
2220int 3690int
2221cctx_stacksize (int new_stacksize = 0) 3691cctx_stacksize (int new_stacksize = 0)
2222 PROTOTYPE: ;$ 3692 PROTOTYPE: ;$
2223 CODE: 3693 CODE:
… …
2259void 3729void
2260list () 3730list ()
2261 PROTOTYPE: 3731 PROTOTYPE:
2262 PPCODE: 3732 PPCODE:
2263{ 3733{
2264 struct coro *coro; 3734 struct coro *coro;
2265 for (coro = coro_first; coro; coro = coro->next) 3735 for (coro = coro_first; coro; coro = coro->next)
2266 if (coro->hv) 3736 if (coro->hv)
2267 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3737 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2268} 3738}
2269 3739
… …
2273 eval = 1 3743 eval = 1
2274 CODE: 3744 CODE:
2275{ 3745{
2276 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3746 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2277 { 3747 {
2278 struct coro temp; 3748 struct coro *current = SvSTATE_current;
3749 struct CoroSLF slf_save;
2279 3750
2280 if (!(coro->flags & CF_RUNNING)) 3751 if (current != coro)
2281 { 3752 {
2282 PUTBACK; 3753 PUTBACK;
2283 save_perl (aTHX_ &temp); 3754 save_perl (aTHX_ current);
2284 load_perl (aTHX_ coro); 3755 load_perl (aTHX_ coro);
3756 /* the coro is most likely in an active SLF call.
3757 * while not strictly required (the code we execute is
3758 * not allowed to call any SLF functions), it's cleaner
3759 * to reinitialise the slf_frame and restore it later.
3760 * This might one day allow us to actually do SLF calls
3761 * from code executed here.
3762 */
3763 slf_save = slf_frame;
3764 slf_frame.prepare = 0;
3765 SPAGAIN;
2285 } 3766 }
2286 3767
2287 {
2288 dSP;
2289 ENTER;
2290 SAVETMPS;
2291 PUTBACK;
2292 PUSHSTACK; 3768 PUSHSTACK;
3769
2293 PUSHMARK (SP); 3770 PUSHMARK (SP);
3771 PUTBACK;
2294 3772
2295 if (ix) 3773 if (ix)
2296 eval_sv (coderef, 0); 3774 eval_sv (coderef, 0);
2297 else 3775 else
2298 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3776 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2299 3777
2300 POPSTACK; 3778 POPSTACK;
2301 SPAGAIN; 3779 SPAGAIN;
2302 FREETMPS;
2303 LEAVE;
2304 PUTBACK;
2305 }
2306 3780
2307 if (!(coro->flags & CF_RUNNING)) 3781 if (current != coro)
2308 { 3782 {
3783 PUTBACK;
3784 slf_frame = slf_save;
2309 save_perl (aTHX_ coro); 3785 save_perl (aTHX_ coro);
2310 load_perl (aTHX_ &temp); 3786 load_perl (aTHX_ current);
2311 SPAGAIN; 3787 SPAGAIN;
2312 } 3788 }
2313 } 3789 }
2314} 3790}
2315 3791
… …
2318 PROTOTYPE: $ 3794 PROTOTYPE: $
2319 ALIAS: 3795 ALIAS:
2320 is_ready = CF_READY 3796 is_ready = CF_READY
2321 is_running = CF_RUNNING 3797 is_running = CF_RUNNING
2322 is_new = CF_NEW 3798 is_new = CF_NEW
2323 is_destroyed = CF_DESTROYED 3799 is_destroyed = CF_ZOMBIE
3800 is_zombie = CF_ZOMBIE
3801 is_suspended = CF_SUSPENDED
2324 CODE: 3802 CODE:
2325 RETVAL = boolSV (coro->flags & ix); 3803 RETVAL = boolSV (coro->flags & ix);
2326 OUTPUT: 3804 OUTPUT:
2327 RETVAL 3805 RETVAL
2328 3806
2329void 3807void
2330throw (Coro::State self, SV *throw = &PL_sv_undef) 3808throw (SV *self, SV *exception = &PL_sv_undef)
2331 PROTOTYPE: $;$ 3809 PROTOTYPE: $;$
2332 CODE: 3810 CODE:
3811{
3812 struct coro *coro = SvSTATE (self);
3813 struct coro *current = SvSTATE_current;
3814 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2333 SvREFCNT_dec (self->throw); 3815 SvREFCNT_dec (*exceptionp);
2334 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3816 SvGETMAGIC (exception);
3817 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3818
3819 api_ready (aTHX_ self);
3820}
2335 3821
2336void 3822void
2337api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3823api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2338 PROTOTYPE: $;$ 3824 PROTOTYPE: $;$
2339 C_ARGS: aTHX_ coro, flags 3825 C_ARGS: aTHX_ coro, flags
2340 3826
2341SV * 3827SV *
2342has_cctx (Coro::State coro) 3828has_cctx (Coro::State coro)
2343 PROTOTYPE: $ 3829 PROTOTYPE: $
2344 CODE: 3830 CODE:
2345 RETVAL = boolSV (!!coro->cctx); 3831 /* maybe manage the running flag differently */
3832 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2346 OUTPUT: 3833 OUTPUT:
2347 RETVAL 3834 RETVAL
2348 3835
2349int 3836int
2350is_traced (Coro::State coro) 3837is_traced (Coro::State coro)
… …
2370 3857
2371void 3858void
2372force_cctx () 3859force_cctx ()
2373 PROTOTYPE: 3860 PROTOTYPE:
2374 CODE: 3861 CODE:
2375 struct coro *coro = SvSTATE (coro_current);
2376 coro->cctx->idle_sp = 0; 3862 cctx_current->idle_sp = 0;
2377 3863
2378void 3864void
2379swap_defsv (Coro::State self) 3865swap_defsv (Coro::State self)
2380 PROTOTYPE: $ 3866 PROTOTYPE: $
2381 ALIAS: 3867 ALIAS:
… …
2389 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3875 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2390 3876
2391 SV *tmp = *src; *src = *dst; *dst = tmp; 3877 SV *tmp = *src; *src = *dst; *dst = tmp;
2392 } 3878 }
2393 3879
3880void
3881cancel (Coro::State self)
3882 CODE:
3883 coro_state_destroy (aTHX_ self);
3884
3885SV *
3886enable_times (int enabled = enable_times)
3887 CODE:
3888{
3889 RETVAL = boolSV (enable_times);
3890
3891 if (enabled != enable_times)
3892 {
3893 enable_times = enabled;
3894
3895 coro_times_update ();
3896 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3897 }
3898}
3899 OUTPUT:
3900 RETVAL
3901
3902void
3903times (Coro::State self)
3904 PPCODE:
3905{
3906 struct coro *current = SvSTATE (coro_current);
3907
3908 if (ecb_expect_false (current == self))
3909 {
3910 coro_times_update ();
3911 coro_times_add (SvSTATE (coro_current));
3912 }
3913
3914 EXTEND (SP, 2);
3915 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3916 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3917
3918 if (ecb_expect_false (current == self))
3919 coro_times_sub (SvSTATE (coro_current));
3920}
3921
3922void
3923swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3924 CODE:
3925{
3926 struct coro *current = SvSTATE_current;
3927
3928 if (current == coro)
3929 SWAP_SVS (current);
3930
3931 if (!coro->swap_sv)
3932 coro->swap_sv = newAV ();
3933
3934 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3935 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3936
3937 if (current == coro)
3938 SWAP_SVS (current);
3939}
3940
3941
2394MODULE = Coro::State PACKAGE = Coro 3942MODULE = Coro::State PACKAGE = Coro
2395 3943
2396BOOT: 3944BOOT:
2397{ 3945{
2398 int i; 3946 if (SVt_LAST > 32)
3947 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2399 3948
2400 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2401 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3949 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2402 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3950 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2403 3951 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2404 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3952 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2405 SvREADONLY_on (coro_current); 3953 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3954 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3955 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3956 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3957
3958 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3959 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3960 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3961 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2406 3962
2407 coro_stash = gv_stashpv ("Coro", TRUE); 3963 coro_stash = gv_stashpv ("Coro", TRUE);
2408 3964
2409 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3965 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2410 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3966 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2411 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3967 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2412 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3968 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2413 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3969 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2414 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3970 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2415
2416 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2417 coro_ready[i] = newAV ();
2418 3971
2419 { 3972 {
2420 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3973 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2421 3974
2422 coroapi.schedule = api_schedule; 3975 coroapi.schedule = api_schedule;
3976 coroapi.schedule_to = api_schedule_to;
2423 coroapi.cede = api_cede; 3977 coroapi.cede = api_cede;
2424 coroapi.cede_notself = api_cede_notself; 3978 coroapi.cede_notself = api_cede_notself;
2425 coroapi.ready = api_ready; 3979 coroapi.ready = api_ready;
2426 coroapi.is_ready = api_is_ready; 3980 coroapi.is_ready = api_is_ready;
2427 coroapi.nready = coro_nready; 3981 coroapi.nready = coro_nready;
2428 coroapi.current = coro_current; 3982 coroapi.current = coro_current;
2429 3983
3984 coroapi.enterleave_hook = api_enterleave_hook;
3985 coroapi.enterleave_unhook = api_enterleave_unhook;
3986 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
3987
2430 GCoroAPI = &coroapi; 3988 /*GCoroAPI = &coroapi;*/
2431 sv_setiv (sv, (IV)&coroapi); 3989 sv_setiv (sv, (IV)&coroapi);
2432 SvREADONLY_on (sv); 3990 SvREADONLY_on (sv);
2433 } 3991 }
2434} 3992}
2435 3993
3994SV *
3995async (...)
3996 PROTOTYPE: &@
3997 CODE:
3998 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3999 api_ready (aTHX_ RETVAL);
4000 OUTPUT:
4001 RETVAL
4002
4003void
4004_destroy (Coro::State coro)
4005 CODE:
4006 /* used by the manager thread */
4007 coro_state_destroy (aTHX_ coro);
4008
4009void
4010on_destroy (Coro::State coro, SV *cb)
4011 CODE:
4012 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4013
4014void
4015join (...)
4016 CODE:
4017 CORO_EXECUTE_SLF_XS (slf_init_join);
4018
4019void
4020terminate (...)
4021 CODE:
4022 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4023
4024void
4025cancel (...)
4026 CODE:
4027 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4028
4029int
4030safe_cancel (Coro::State self, ...)
4031 C_ARGS: aTHX_ self, &ST (1), items - 1
4032
2436void 4033void
2437schedule (...) 4034schedule (...)
2438 CODE: 4035 CODE:
2439 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 4036 CORO_EXECUTE_SLF_XS (slf_init_schedule);
4037
4038void
4039schedule_to (...)
4040 CODE:
4041 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4042
4043void
4044cede_to (...)
4045 CODE:
4046 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2440 4047
2441void 4048void
2442cede (...) 4049cede (...)
2443 CODE: 4050 CODE:
2444 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 4051 CORO_EXECUTE_SLF_XS (slf_init_cede);
2445 4052
2446void 4053void
2447cede_notself (...) 4054cede_notself (...)
2448 CODE: 4055 CODE:
2449 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 4056 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2450 4057
2451void 4058void
2452_set_current (SV *current) 4059_set_current (SV *current)
2453 PROTOTYPE: $ 4060 PROTOTYPE: $
2454 CODE: 4061 CODE:
2455 SvREFCNT_dec (SvRV (coro_current)); 4062 SvREFCNT_dec_NN (SvRV (coro_current));
2456 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4063 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2457 4064
2458void 4065void
2459_set_readyhook (SV *hook) 4066_set_readyhook (SV *hook)
2460 PROTOTYPE: $ 4067 PROTOTYPE: $
2461 CODE: 4068 CODE:
2462 SvREFCNT_dec (coro_readyhook); 4069 SvREFCNT_dec (coro_readyhook);
4070 SvGETMAGIC (hook);
4071 if (SvOK (hook))
4072 {
2463 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4073 coro_readyhook = newSVsv (hook);
4074 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4075 }
4076 else
4077 {
4078 coro_readyhook = 0;
4079 CORO_READYHOOK = 0;
4080 }
2464 4081
2465int 4082int
2466prio (Coro::State coro, int newprio = 0) 4083prio (Coro::State coro, int newprio = 0)
2467 PROTOTYPE: $;$ 4084 PROTOTYPE: $;$
2468 ALIAS: 4085 ALIAS:
… …
2474 if (items > 1) 4091 if (items > 1)
2475 { 4092 {
2476 if (ix) 4093 if (ix)
2477 newprio = coro->prio - newprio; 4094 newprio = coro->prio - newprio;
2478 4095
2479 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4096 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2480 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4097 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2481 4098
2482 coro->prio = newprio; 4099 coro->prio = newprio;
2483 } 4100 }
2484} 4101}
2485 OUTPUT: 4102 OUTPUT:
… …
2499 CODE: 4116 CODE:
2500 RETVAL = coro_nready; 4117 RETVAL = coro_nready;
2501 OUTPUT: 4118 OUTPUT:
2502 RETVAL 4119 RETVAL
2503 4120
2504# for async_pool speedup
2505void 4121void
2506_pool_1 (SV *cb) 4122suspend (Coro::State self)
4123 PROTOTYPE: $
2507 CODE: 4124 CODE:
2508{ 4125 self->flags |= CF_SUSPENDED;
2509 struct coro *coro = SvSTATE (coro_current);
2510 HV *hv = (HV *)SvRV (coro_current);
2511 AV *defav = GvAV (PL_defgv);
2512 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2513 AV *invoke_av;
2514 int i, len;
2515 4126
2516 if (!invoke) 4127void
4128resume (Coro::State self)
4129 PROTOTYPE: $
4130 CODE:
4131 self->flags &= ~CF_SUSPENDED;
4132
4133void
4134_pool_handler (...)
4135 CODE:
4136 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4137
4138void
4139async_pool (SV *cv, ...)
4140 PROTOTYPE: &@
4141 PPCODE:
4142{
4143 HV *hv = (HV *)av_pop (av_async_pool);
4144 AV *av = newAV ();
4145 SV *cb = ST (0);
4146 int i;
4147
4148 av_extend (av, items - 2);
4149 for (i = 1; i < items; ++i)
4150 av_push (av, SvREFCNT_inc_NN (ST (i)));
4151
4152 if ((SV *)hv == &PL_sv_undef)
2517 { 4153 {
2518 SV *old = PL_diehook; 4154 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2519 PL_diehook = 0; 4155 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2520 SvREFCNT_dec (old); 4156 SvREFCNT_dec_NN (sv);
2521 croak ("\3async_pool terminate\2\n");
2522 } 4157 }
2523 4158
2524 SvREFCNT_dec (coro->saved_deffh);
2525 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2526
2527 hv_store (hv, "desc", sizeof ("desc") - 1,
2528 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2529
2530 invoke_av = (AV *)SvRV (invoke);
2531 len = av_len (invoke_av);
2532
2533 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2534
2535 if (len > 0)
2536 { 4159 {
2537 av_fill (defav, len - 1); 4160 struct coro *coro = SvSTATE_hv (hv);
2538 for (i = 0; i < len; ++i) 4161
2539 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4162 assert (!coro->invoke_cb);
4163 assert (!coro->invoke_av);
4164 coro->invoke_cb = SvREFCNT_inc (cb);
4165 coro->invoke_av = av;
2540 } 4166 }
4167
4168 api_ready (aTHX_ (SV *)hv);
4169
4170 if (GIMME_V != G_VOID)
4171 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4172 else
4173 SvREFCNT_dec_NN (hv);
2541} 4174}
4175
4176SV *
4177rouse_cb ()
4178 PROTOTYPE:
4179 CODE:
4180 RETVAL = coro_new_rouse_cb (aTHX);
4181 OUTPUT:
4182 RETVAL
2542 4183
2543void 4184void
2544_pool_2 (SV *cb) 4185rouse_wait (...)
4186 PROTOTYPE: ;$
4187 PPCODE:
4188 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4189
4190void
4191on_enter (SV *block)
4192 ALIAS:
4193 on_leave = 1
4194 PROTOTYPE: &
2545 CODE: 4195 CODE:
2546{ 4196{
2547 struct coro *coro = SvSTATE (coro_current); 4197 struct coro *coro = SvSTATE_current;
4198 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2548 4199
2549 sv_setsv (cb, &PL_sv_undef); 4200 block = s_get_cv_croak (block);
2550 4201
2551 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4202 if (!*avp)
2552 coro->saved_deffh = 0;
2553
2554 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2555 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2556 {
2557 SV *old = PL_diehook;
2558 PL_diehook = 0;
2559 SvREFCNT_dec (old);
2560 croak ("\3async_pool terminate\2\n");
2561 }
2562
2563 av_clear (GvAV (PL_defgv));
2564 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2565 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2566
2567 coro->prio = 0;
2568
2569 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2570 api_trace (aTHX_ coro_current, 0);
2571
2572 av_push (av_async_pool, newSVsv (coro_current));
2573}
2574
2575
2576MODULE = Coro::State PACKAGE = Coro::AIO
2577
2578void
2579_get_state (SV *self)
2580 PROTOTYPE: $
2581 PPCODE:
2582{
2583 AV *defav = GvAV (PL_defgv);
2584 AV *av = newAV (); 4203 *avp = newAV ();
2585 int i;
2586 SV *data_sv = newSV (sizeof (struct io_state));
2587 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2588 SvCUR_set (data_sv, sizeof (struct io_state));
2589 SvPOK_only (data_sv);
2590 4204
2591 data->errorno = errno; 4205 av_push (*avp, SvREFCNT_inc (block));
2592 data->laststype = PL_laststype;
2593 data->laststatval = PL_laststatval;
2594 data->statcache = PL_statcache;
2595 4206
2596 av_extend (av, AvFILLp (defav) + 1 + 1); 4207 if (!ix)
4208 on_enterleave_call (aTHX_ block);
2597 4209
2598 for (i = 0; i <= AvFILLp (defav); ++i) 4210 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2599 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4211 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2600 4212 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2601 av_push (av, data_sv);
2602
2603 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2604
2605 api_ready (aTHX_ self);
2606}
2607
2608void
2609_set_state (SV *state)
2610 PROTOTYPE: $
2611 PPCODE:
2612{
2613 AV *av = (AV *)SvRV (state);
2614 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2615 int i;
2616
2617 errno = data->errorno;
2618 PL_laststype = data->laststype;
2619 PL_laststatval = data->laststatval;
2620 PL_statcache = data->statcache;
2621
2622 EXTEND (SP, AvFILLp (av));
2623 for (i = 0; i < AvFILLp (av); ++i)
2624 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2625}
2626
2627
2628MODULE = Coro::State PACKAGE = Coro::AnyEvent
2629
2630BOOT:
2631 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2632
2633void
2634_schedule (...)
2635 CODE:
2636{
2637 static int incede;
2638
2639 api_cede_notself (aTHX);
2640
2641 ++incede;
2642 while (coro_nready >= incede && api_cede (aTHX))
2643 ;
2644
2645 sv_setsv (sv_activity, &PL_sv_undef);
2646 if (coro_nready >= incede)
2647 {
2648 PUSHMARK (SP);
2649 PUTBACK;
2650 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2651 SPAGAIN;
2652 }
2653
2654 --incede;
2655} 4213}
2656 4214
2657 4215
2658MODULE = Coro::State PACKAGE = PerlIO::cede 4216MODULE = Coro::State PACKAGE = PerlIO::cede
2659 4217
2660BOOT: 4218BOOT:
2661 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4219 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2662 4220
4221
2663MODULE = Coro::State PACKAGE = Coro::Semaphore 4222MODULE = Coro::State PACKAGE = Coro::Semaphore
2664 4223
2665SV * 4224SV *
2666new (SV *klass, SV *count_ = 0) 4225new (SV *klass, SV *count = 0)
2667 CODE: 4226 CODE:
2668{ 4227{
2669 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4228 int semcnt = 1;
2670 AV *av = newAV (); 4229
2671 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4230 if (count)
2672 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4231 {
4232 SvGETMAGIC (count);
4233
4234 if (SvOK (count))
4235 semcnt = SvIV (count);
4236 }
4237
4238 RETVAL = sv_bless (
4239 coro_waitarray_new (aTHX_ semcnt),
4240 GvSTASH (CvGV (cv))
4241 );
2673} 4242}
4243 OUTPUT:
4244 RETVAL
4245
4246# helper for Coro::Channel and others
4247SV *
4248_alloc (int count)
4249 CODE:
4250 RETVAL = coro_waitarray_new (aTHX_ count);
2674 OUTPUT: 4251 OUTPUT:
2675 RETVAL 4252 RETVAL
2676 4253
2677SV * 4254SV *
2678count (SV *self) 4255count (SV *self)
… …
2680 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4257 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2681 OUTPUT: 4258 OUTPUT:
2682 RETVAL 4259 RETVAL
2683 4260
2684void 4261void
2685up (SV *self, int adjust = 1) 4262up (SV *self)
2686 ALIAS:
2687 adjust = 1
2688 CODE: 4263 CODE:
2689 coro_semaphore_adjust ((AV *)SvRV (self), ix ? adjust : 1); 4264 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
2690 4265
2691void 4266void
2692down (SV *self) 4267adjust (SV *self, int adjust)
2693 CODE: 4268 CODE:
2694 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 4269 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4270
4271void
4272down (...)
4273 CODE:
4274 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4275
4276void
4277wait (...)
4278 CODE:
4279 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2695 4280
2696void 4281void
2697try (SV *self) 4282try (SV *self)
2698 PPCODE: 4283 PPCODE:
2699{ 4284{
… …
2711 XSRETURN_NO; 4296 XSRETURN_NO;
2712} 4297}
2713 4298
2714void 4299void
2715waiters (SV *self) 4300waiters (SV *self)
2716 CODE: 4301 PPCODE:
2717{ 4302{
2718 AV *av = (AV *)SvRV (self); 4303 AV *av = (AV *)SvRV (self);
4304 int wcount = AvFILLp (av) + 1 - 1;
2719 4305
2720 if (GIMME_V == G_SCALAR) 4306 if (GIMME_V == G_SCALAR)
2721 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4307 XPUSHs (sv_2mortal (newSViv (wcount)));
2722 else 4308 else
2723 { 4309 {
2724 int i; 4310 int i;
2725 EXTEND (SP, AvFILLp (av) + 1 - 1); 4311 EXTEND (SP, wcount);
2726 for (i = 1; i <= AvFILLp (av); ++i) 4312 for (i = 1; i <= wcount; ++i)
2727 PUSHs (newSVsv (AvARRAY (av)[i])); 4313 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2728 } 4314 }
2729} 4315}
2730 4316
4317MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4318
4319void
4320_may_delete (SV *sem, int count, unsigned int extra_refs)
4321 PPCODE:
4322{
4323 AV *av = (AV *)SvRV (sem);
4324
4325 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4326 && AvFILLp (av) == 0 /* no waiters, just count */
4327 && SvIV (AvARRAY (av)[0]) == count)
4328 XSRETURN_YES;
4329
4330 XSRETURN_NO;
4331}
4332
4333MODULE = Coro::State PACKAGE = Coro::Signal
4334
4335SV *
4336new (SV *klass)
4337 CODE:
4338 RETVAL = sv_bless (
4339 coro_waitarray_new (aTHX_ 0),
4340 GvSTASH (CvGV (cv))
4341 );
4342 OUTPUT:
4343 RETVAL
4344
4345void
4346wait (...)
4347 CODE:
4348 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4349
4350void
4351broadcast (SV *self)
4352 CODE:
4353{
4354 AV *av = (AV *)SvRV (self);
4355 coro_signal_wake (aTHX_ av, AvFILLp (av));
4356}
4357
4358void
4359send (SV *self)
4360 CODE:
4361{
4362 AV *av = (AV *)SvRV (self);
4363
4364 if (AvFILLp (av))
4365 coro_signal_wake (aTHX_ av, 1);
4366 else
4367 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4368}
4369
4370IV
4371awaited (SV *self)
4372 CODE:
4373 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4374 OUTPUT:
4375 RETVAL
4376
4377
4378MODULE = Coro::State PACKAGE = Coro::AnyEvent
4379
4380BOOT:
4381 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4382
4383void
4384_schedule (...)
4385 CODE:
4386{
4387 static int incede;
4388
4389 api_cede_notself (aTHX);
4390
4391 ++incede;
4392 while (coro_nready >= incede && api_cede (aTHX))
4393 ;
4394
4395 sv_setsv (sv_activity, &PL_sv_undef);
4396 if (coro_nready >= incede)
4397 {
4398 PUSHMARK (SP);
4399 PUTBACK;
4400 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4401 }
4402
4403 --incede;
4404}
4405
4406
4407MODULE = Coro::State PACKAGE = Coro::AIO
4408
4409void
4410_register (char *target, char *proto, SV *req)
4411 CODE:
4412{
4413 SV *req_cv = s_get_cv_croak (req);
4414 /* newXSproto doesn't return the CV on 5.8 */
4415 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4416 sv_setpv ((SV *)slf_cv, proto);
4417 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4418}
4419
4420MODULE = Coro::State PACKAGE = Coro::Select
4421
4422void
4423patch_pp_sselect ()
4424 CODE:
4425 if (!coro_old_pp_sselect)
4426 {
4427 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4428 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4429 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4430 }
4431
4432void
4433unpatch_pp_sselect ()
4434 CODE:
4435 if (coro_old_pp_sselect)
4436 {
4437 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4438 coro_old_pp_sselect = 0;
4439 }
4440
4441MODULE = Coro::State PACKAGE = Coro::Util
4442
4443void
4444_exit (int code)
4445 CODE:
4446 _exit (code);
4447
4448NV
4449time ()
4450 CODE:
4451 RETVAL = nvtime (aTHX);
4452 OUTPUT:
4453 RETVAL
4454
4455NV
4456gettimeofday ()
4457 PPCODE:
4458{
4459 UV tv [2];
4460 u2time (aTHX_ tv);
4461 EXTEND (SP, 2);
4462 PUSHs (sv_2mortal (newSVuv (tv [0])));
4463 PUSHs (sv_2mortal (newSVuv (tv [1])));
4464}
4465

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