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Comparing Coro/Coro/State.xs (file contents):
Revision 1.267 by root, Fri Nov 14 06:29:52 2008 UTC vs.
Revision 1.440 by root, Sat Feb 22 14:12:45 2014 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 SVs_PADSTALE
28# define SVs_PADSTALE 0
29#endif
30
31#ifdef PadARRAY
32# define NEWPADAPI 1
33# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
34#else
35typedef AV PADNAMELIST;
36# if !PERL_VERSION_ATLEAST(5,8,0)
37typedef AV PADLIST;
38typedef AV PAD;
39# endif
40# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
41# define PadlistMAX(pl) AvFILLp (pl)
42# define PadlistNAMES(pl) (*PadlistARRAY (pl))
43# define PadARRAY AvARRAY
44# define PadMAX AvFILLp
45# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
46#endif
47
48/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
49/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
50#if PERL_VERSION_ATLEAST(5,19,0)
51# define SVt_BIND SVt_IV
52#endif
53
54#if defined(_WIN32)
55# undef HAS_GETTIMEOFDAY
18# undef setjmp 56# undef setjmp
19# undef longjmp 57# undef longjmp
20# undef _exit 58# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 59# define setjmp _setjmp /* deep magic */
22#else 60#else
23# include <inttypes.h> /* most portable stdint.h */ 61# include <inttypes.h> /* most portable stdint.h */
24#endif 62#endif
25 63
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 */ 64/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 65static int cctx_max_idle = 4;
55 66
56#define PERL_VERSION_ATLEAST(a,b,c) \ 67#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 68# 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 69#endif
113 70
114/* prefer perl internal functions over our own? */ 71/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS 72#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0 73# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 74#endif
118 75
119/* The next macros try to return the current stack pointer, in an as 76/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 77 * portable way as possible. */
121#define dSTACKLEVEL volatile char stacklevel
122#define STACKLEVEL ((void *)&stacklevel)
123
124#define IN_DESTRUCT (PL_main_cv == Nullcv)
125
126#if __GNUC__ >= 3 78#if __GNUC__ >= 4
127# define attribute(x) __attribute__(x) 79# define dSTACKLEVEL int stacklevel_dummy
128# define expect(expr,value) __builtin_expect ((expr),(value)) 80# define STACKLEVEL __builtin_frame_address (0)
129# define INLINE static inline
130#else 81#else
131# define attribute(x) 82# define dSTACKLEVEL volatile void *stacklevel
132# define expect(expr,value) (expr) 83# define STACKLEVEL ((void *)&stacklevel)
133# define INLINE static
134#endif 84#endif
135 85
136#define expect_false(expr) expect ((expr) != 0, 0) 86#define IN_DESTRUCT PL_dirty
137#define expect_true(expr) expect ((expr) != 0, 1)
138
139#define NOINLINE attribute ((noinline))
140 87
141#include "CoroAPI.h" 88#include "CoroAPI.h"
89#define GCoroAPI (&coroapi) /* very sneaky */
142 90
143#ifdef USE_ITHREADS 91#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 92# if CORO_PTHREAD
149static void *coro_thx; 93static void *coro_thx;
150# endif 94# endif
95#endif
151 96
152#else 97#ifdef __linux
153 98# include <time.h> /* for timespec */
154# define LOCK (void)0 99# include <syscall.h> /* for SYS_* */
155# define UNLOCK (void)0 100# ifdef SYS_clock_gettime
156 101# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
102# define CORO_CLOCK_MONOTONIC 1
103# define CORO_CLOCK_THREAD_CPUTIME_ID 3
157#endif 104# endif
158 105#endif
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
163
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 106
174static double (*nvtime)(); /* so why doesn't it take void? */ 107static double (*nvtime)(); /* so why doesn't it take void? */
108static void (*u2time)(pTHX_ UV ret[2]);
109
110/* we hijack an hopefully unused CV flag for our purposes */
111#define CVf_SLF 0x4000
112static OP *pp_slf (pTHX);
113static void slf_destroy (pTHX_ struct coro *coro);
175 114
176static U32 cctx_gen; 115static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 116static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 117static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 118static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 119static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 120static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 121static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184 122
185struct transfer_args 123static AV *av_destroy; /* destruction queue */
186{ 124static SV *sv_manager; /* the manager coro */
187 struct coro *prev, *next; 125static SV *sv_idle; /* $Coro::idle */
188};
189 126
190static GV *irsgv; /* $/ */ 127static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 128static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 129static SV *rv_diehook;
193static SV *rv_warnhook; 130static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 131static HV *hv_sig; /* %SIG */
195 132
196/* async_pool helper stuff */ 133/* async_pool helper stuff */
197static SV *sv_pool_rss; 134static SV *sv_pool_rss;
198static SV *sv_pool_size; 135static SV *sv_pool_size;
136static SV *sv_async_pool_idle; /* description string */
199static AV *av_async_pool; 137static AV *av_async_pool; /* idle pool */
138static SV *sv_Coro; /* class string */
139static CV *cv_pool_handler;
200 140
201/* Coro::AnyEvent */ 141/* Coro::AnyEvent */
202static SV *sv_activity; 142static SV *sv_activity;
203 143
144/* enable processtime/realtime profiling */
145static char enable_times;
146typedef U32 coro_ts[2];
147static coro_ts time_real, time_cpu;
148static char times_valid;
149
204static struct coro_cctx *cctx_first; 150static struct coro_cctx *cctx_first;
205static int cctx_count, cctx_idle; 151static int cctx_count, cctx_idle;
206 152
207enum { 153enum
154{
208 CC_MAPPED = 0x01, 155 CC_MAPPED = 0x01,
209 CC_NOREUSE = 0x02, /* throw this away after tracing */ 156 CC_NOREUSE = 0x02, /* throw this away after tracing */
210 CC_TRACE = 0x04, 157 CC_TRACE = 0x04,
211 CC_TRACE_SUB = 0x08, /* trace sub calls */ 158 CC_TRACE_SUB = 0x08, /* trace sub calls */
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 159 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 160 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 161};
215 162
216/* this is a structure representing a c-level coroutine */ 163/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 164typedef struct coro_cctx
165{
218 struct coro_cctx *next; 166 struct coro_cctx *next;
219 167
220 /* the stack */ 168 /* the stack */
221 void *sptr; 169 struct coro_stack stack;
222 size_t ssize;
223 170
224 /* cpu state */ 171 /* cpu state */
225 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 172 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
173#ifndef NDEBUG
226 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 174 JMPENV *idle_te; /* same as idle_sp, but for top_env */
175#endif
227 JMPENV *top_env; 176 JMPENV *top_env;
228 coro_context cctx; 177 coro_context cctx;
229 178
230 U32 gen; 179 U32 gen;
231#if CORO_USE_VALGRIND 180#if CORO_USE_VALGRIND
232 int valgrind_id; 181 int valgrind_id;
233#endif 182#endif
234 unsigned char flags; 183 unsigned char flags;
235} coro_cctx; 184} coro_cctx;
236 185
186static coro_cctx *cctx_current; /* the currently running cctx */
187
188/*****************************************************************************/
189
190static MGVTBL coro_state_vtbl;
191
237enum { 192enum
193{
238 CF_RUNNING = 0x0001, /* coroutine is running */ 194 CF_RUNNING = 0x0001, /* coroutine is running */
239 CF_READY = 0x0002, /* coroutine is ready */ 195 CF_READY = 0x0002, /* coroutine is ready */
240 CF_NEW = 0x0004, /* has never been switched to */ 196 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 197 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
198 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
199 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
242}; 200};
243 201
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 202/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 203typedef struct
246 SV *defsv; 204{
247 AV *defav;
248 SV *errsv;
249 SV *irsgv;
250#define VAR(name,type) type name; 205 #define VARx(name,expr,type) type name;
251# include "state.h" 206 #include "state.h"
252#undef VAR
253} perl_slots; 207} perl_slots;
254 208
209/* how many context stack entries do we need for perl_slots */
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 210#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 211
257/* this is a structure representing a perl-level coroutine */ 212/* this is a structure representing a perl-level coroutine */
258struct coro { 213struct coro
214{
259 /* the c coroutine allocated to this perl coroutine, if any */ 215 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 216 coro_cctx *cctx;
261 217
262 /* process data */ 218 /* ready queue */
219 struct coro *next_ready;
220
221 /* state data */
222 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 223 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 224 perl_slots *slot; /* basically the saved sp */
265 225
226 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 227 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 228 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 229 HV *hv; /* the perl hash associated with this coro, if any */
270 230
271 /* statistics */ 231 /* statistics */
272 int usecount; /* number of transfers to this coro */ 232 int usecount; /* number of transfers to this coro */
273 233
274 /* coro process data */ 234 /* coro process data */
275 int prio; 235 int prio;
276 SV *throw; /* exception to be thrown */ 236 SV *except; /* exception to be thrown */
237 SV *rouse_cb; /* last rouse callback */
238 AV *on_destroy; /* callbacks or coros to notify on destroy */
239 AV *status; /* the exit status list */
277 240
278 /* async_pool */ 241 /* async_pool */
279 SV *saved_deffh; 242 SV *saved_deffh;
243 SV *invoke_cb;
244 AV *invoke_av;
245
246 /* on_enter/on_leave */
247 AV *on_enter;
248 AV *on_leave;
249
250 /* swap_sv */
251 AV *swap_sv;
252
253 /* times */
254 coro_ts t_cpu, t_real;
280 255
281 /* linked list */ 256 /* linked list */
282 struct coro *next, *prev; 257 struct coro *next, *prev;
283}; 258};
284 259
285typedef struct coro *Coro__State; 260typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 261typedef struct coro *Coro__State_or_hashref;
287 262
263/* the following variables are effectively part of the perl context */
264/* and get copied between struct coro and these variables */
265/* the main reason we don't support windows process emulation */
266static struct CoroSLF slf_frame; /* the current slf frame */
267
288/** Coro ********************************************************************/ 268/** Coro ********************************************************************/
289 269
290#define PRIO_MAX 3 270#define CORO_PRIO_MAX 3
291#define PRIO_HIGH 1 271#define CORO_PRIO_HIGH 1
292#define PRIO_NORMAL 0 272#define CORO_PRIO_NORMAL 0
293#define PRIO_LOW -1 273#define CORO_PRIO_LOW -1
294#define PRIO_IDLE -3 274#define CORO_PRIO_IDLE -3
295#define PRIO_MIN -4 275#define CORO_PRIO_MIN -4
296 276
297/* for Coro.pm */ 277/* for Coro.pm */
298static SV *coro_current; 278static SV *coro_current;
299static SV *coro_readyhook; 279static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 280static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
301static int coro_nready; 281static CV *cv_coro_run;
302static struct coro *coro_first; 282static struct coro *coro_first;
283#define coro_nready coroapi.nready
284
285/** JIT *********************************************************************/
286
287#if CORO_JIT
288 /* APPLE doesn't have mmap though */
289 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
290 #ifndef CORO_JIT_TYPE
291 #if ECB_AMD64 && CORO_JIT_UNIXY
292 #define CORO_JIT_TYPE "amd64-unix"
293 #elif __i386 && CORO_JIT_UNIXY
294 #define CORO_JIT_TYPE "x86-unix"
295 #endif
296 #endif
297#endif
298
299#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
300 #undef CORO_JIT
301#endif
302
303#if CORO_JIT
304 typedef void (*load_save_perl_slots_type)(perl_slots *);
305 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
306#endif
307
308/** Coro::Select ************************************************************/
309
310static OP *(*coro_old_pp_sselect) (pTHX);
311static SV *coro_select_select;
312
313/* horrible hack, but if it works... */
314static OP *
315coro_pp_sselect (pTHX)
316{
317 dSP;
318 PUSHMARK (SP - 4); /* fake argument list */
319 XPUSHs (coro_select_select);
320 PUTBACK;
321
322 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
323 PL_op->op_flags |= OPf_STACKED;
324 PL_op->op_private = 0;
325 return PL_ppaddr [OP_ENTERSUB](aTHX);
326}
327
328/** time stuff **************************************************************/
329
330#ifdef HAS_GETTIMEOFDAY
331
332ecb_inline void
333coro_u2time (pTHX_ UV ret[2])
334{
335 struct timeval tv;
336 gettimeofday (&tv, 0);
337
338 ret [0] = tv.tv_sec;
339 ret [1] = tv.tv_usec;
340}
341
342ecb_inline double
343coro_nvtime (void)
344{
345 struct timeval tv;
346 gettimeofday (&tv, 0);
347
348 return tv.tv_sec + tv.tv_usec * 1e-6;
349}
350
351ecb_inline void
352time_init (pTHX)
353{
354 nvtime = coro_nvtime;
355 u2time = coro_u2time;
356}
357
358#else
359
360ecb_inline void
361time_init (pTHX)
362{
363 SV **svp;
364
365 require_pv ("Time/HiRes.pm");
366
367 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
368
369 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
370 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
371
372 nvtime = INT2PTR (double (*)(), SvIV (*svp));
373
374 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
375 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
376}
377
378#endif
303 379
304/** lowlevel stuff **********************************************************/ 380/** lowlevel stuff **********************************************************/
305 381
306static SV * 382static SV * ecb_noinline
307coro_get_sv (pTHX_ const char *name, int create) 383coro_get_sv (pTHX_ const char *name, int create)
308{ 384{
309#if PERL_VERSION_ATLEAST (5,10,0) 385#if PERL_VERSION_ATLEAST (5,10,0)
310 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 386 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
311 get_sv (name, create); 387 get_sv (name, create);
312#endif 388#endif
313 return get_sv (name, create); 389 return get_sv (name, create);
314} 390}
315 391
316static AV * 392static AV * ecb_noinline
317coro_get_av (pTHX_ const char *name, int create) 393coro_get_av (pTHX_ const char *name, int create)
318{ 394{
319#if PERL_VERSION_ATLEAST (5,10,0) 395#if PERL_VERSION_ATLEAST (5,10,0)
320 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 396 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
321 get_av (name, create); 397 get_av (name, create);
322#endif 398#endif
323 return get_av (name, create); 399 return get_av (name, create);
324} 400}
325 401
326static HV * 402static HV * ecb_noinline
327coro_get_hv (pTHX_ const char *name, int create) 403coro_get_hv (pTHX_ const char *name, int create)
328{ 404{
329#if PERL_VERSION_ATLEAST (5,10,0) 405#if PERL_VERSION_ATLEAST (5,10,0)
330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 406 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
331 get_hv (name, create); 407 get_hv (name, create);
332#endif 408#endif
333 return get_hv (name, create); 409 return get_hv (name, create);
334} 410}
335 411
336static AV * 412ecb_inline void
413coro_times_update (void)
414{
415#ifdef coro_clock_gettime
416 struct timespec ts;
417
418 ts.tv_sec = ts.tv_nsec = 0;
419 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
420 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
421
422 ts.tv_sec = ts.tv_nsec = 0;
423 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
424 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
425#else
426 dTHX;
427 UV tv[2];
428
429 u2time (aTHX_ tv);
430 time_real [0] = tv [0];
431 time_real [1] = tv [1] * 1000;
432#endif
433}
434
435ecb_inline void
436coro_times_add (struct coro *c)
437{
438 c->t_real [1] += time_real [1];
439 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
440 c->t_real [0] += time_real [0];
441
442 c->t_cpu [1] += time_cpu [1];
443 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
444 c->t_cpu [0] += time_cpu [0];
445}
446
447ecb_inline void
448coro_times_sub (struct coro *c)
449{
450 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
451 c->t_real [1] -= time_real [1];
452 c->t_real [0] -= time_real [0];
453
454 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
455 c->t_cpu [1] -= time_cpu [1];
456 c->t_cpu [0] -= time_cpu [0];
457}
458
459/*****************************************************************************/
460/* magic glue */
461
462#define CORO_MAGIC_type_cv 26
463#define CORO_MAGIC_type_state PERL_MAGIC_ext
464
465#define CORO_MAGIC_NN(sv, type) \
466 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
467 ? SvMAGIC (sv) \
468 : mg_find (sv, type))
469
470#define CORO_MAGIC(sv, type) \
471 (ecb_expect_true (SvMAGIC (sv)) \
472 ? CORO_MAGIC_NN (sv, type) \
473 : 0)
474
475#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
476#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
477
478ecb_inline MAGIC *
479SvSTATEhv_p (pTHX_ SV *coro)
480{
481 MAGIC *mg;
482
483 if (ecb_expect_true (
484 SvTYPE (coro) == SVt_PVHV
485 && (mg = CORO_MAGIC_state (coro))
486 && mg->mg_virtual == &coro_state_vtbl
487 ))
488 return mg;
489
490 return 0;
491}
492
493ecb_inline struct coro *
494SvSTATE_ (pTHX_ SV *coro)
495{
496 MAGIC *mg;
497
498 if (SvROK (coro))
499 coro = SvRV (coro);
500
501 mg = SvSTATEhv_p (aTHX_ coro);
502 if (!mg)
503 croak ("Coro::State object required");
504
505 return (struct coro *)mg->mg_ptr;
506}
507
508#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
509
510/* faster than SvSTATE, but expects a coroutine hv */
511#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
512#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
513
514/*****************************************************************************/
515/* padlist management and caching */
516
517ecb_inline PADLIST *
337coro_clone_padlist (pTHX_ CV *cv) 518coro_derive_padlist (pTHX_ CV *cv)
338{ 519{
339 AV *padlist = CvPADLIST (cv); 520 PADLIST *padlist = CvPADLIST (cv);
340 AV *newpadlist, *newpad; 521 PADLIST *newpadlist;
522 PAD *newpad;
523 PADOFFSET off = PadlistMAX (padlist) + 1;
341 524
342 newpadlist = newAV (); 525#if NEWPADAPI
526
527 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
528 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
529 while (!PadlistARRAY (padlist)[off - 1])
530 --off;
531
532 Perl_pad_push (aTHX_ padlist, off);
533
534 newpad = PadlistARRAY (padlist)[off];
535 PadlistARRAY (padlist)[off] = 0;
536
537#else
538
539#if PERL_VERSION_ATLEAST (5,10,0)
540 Perl_pad_push (aTHX_ padlist, off);
541#else
542 Perl_pad_push (aTHX_ padlist, off, 1);
543#endif
544
545 newpad = PadlistARRAY (padlist)[off];
546 PadlistMAX (padlist) = off - 1;
547
548#endif
549
550 newPADLIST (newpadlist);
551#if !PERL_VERSION_ATLEAST(5,15,3)
552 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
343 AvREAL_off (newpadlist); 553 AvREAL_off (newpadlist);
344#if PERL_VERSION_ATLEAST (5,10,0)
345 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
346#else
347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
348#endif 554#endif
349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
350 --AvFILLp (padlist);
351 555
352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 556 /* Already extended to 2 elements by newPADLIST. */
353 av_store (newpadlist, 1, (SV *)newpad); 557 PadlistMAX (newpadlist) = 1;
558 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
559 PadlistARRAY (newpadlist)[1] = newpad;
354 560
355 return newpadlist; 561 return newpadlist;
356} 562}
357 563
358static void 564ecb_inline void
359free_padlist (pTHX_ AV *padlist) 565free_padlist (pTHX_ PADLIST *padlist)
360{ 566{
361 /* may be during global destruction */ 567 /* may be during global destruction */
362 if (SvREFCNT (padlist)) 568 if (!IN_DESTRUCT)
363 { 569 {
364 I32 i = AvFILLp (padlist); 570 I32 i = PadlistMAX (padlist);
365 while (i >= 0) 571
572 while (i > 0) /* special-case index 0 */
366 { 573 {
367 SV **svp = av_fetch (padlist, i--, FALSE); 574 /* we try to be extra-careful here */
575 PAD *pad = PadlistARRAY (padlist)[i--];
576
368 if (svp) 577 if (pad)
369 { 578 {
370 SV *sv; 579 I32 j = PadMAX (pad);
371 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 580
581 while (j >= 0)
372 SvREFCNT_dec (sv); 582 SvREFCNT_dec (PadARRAY (pad)[j--]);
373 583
584 PadMAX (pad) = -1;
374 SvREFCNT_dec (*svp); 585 SvREFCNT_dec (pad);
375 } 586 }
376 } 587 }
377 588
589 SvREFCNT_dec (PadlistNAMES (padlist));
590
591#if NEWPADAPI
592 Safefree (PadlistARRAY (padlist));
593 Safefree (padlist);
594#else
595 AvFILLp (padlist) = -1;
596 AvREAL_off (padlist);
378 SvREFCNT_dec ((SV*)padlist); 597 SvREFCNT_dec ((SV*)padlist);
598#endif
379 } 599 }
380} 600}
381 601
382static int 602static int
383coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 603coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
384{ 604{
385 AV *padlist; 605 PADLIST *padlist;
386 AV *av = (AV *)mg->mg_obj; 606 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
607 size_t len = *(size_t *)mg->mg_ptr;
387 608
388 /* casting is fun. */ 609 /* perl manages to free our internal AV and _then_ call us */
389 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 610 if (IN_DESTRUCT)
611 return 0;
612
613 while (len--)
390 free_padlist (aTHX_ padlist); 614 free_padlist (aTHX_ padlists[len]);
391
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 615
394 return 0; 616 return 0;
395} 617}
396
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext
398#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 618
400static MGVTBL coro_cv_vtbl = { 619static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 620 0, 0, 0, 0,
402 coro_cv_free 621 coro_cv_free
403}; 622};
404 623
405#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \
407 ? SvMAGIC (sv)->mg_type == type \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0
411
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
414
415INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro)
417{
418 HV *stash;
419 MAGIC *mg;
420
421 if (SvROK (coro))
422 coro = SvRV (coro);
423
424 if (expect_false (SvTYPE (coro) != SVt_PVHV))
425 croak ("Coro::State object required");
426
427 stash = SvSTASH (coro);
428 if (expect_false (stash != coro_stash && stash != coro_state_stash))
429 {
430 /* very slow, but rare, check */
431 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
432 croak ("Coro::State object required");
433 }
434
435 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr;
437}
438
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
440
441/* the next two functions merely cache the padlists */ 624/* the next two functions merely cache the padlists */
442static void 625ecb_inline void
443get_padlist (pTHX_ CV *cv) 626get_padlist (pTHX_ CV *cv)
444{ 627{
445 MAGIC *mg = CORO_MAGIC_cv (cv); 628 MAGIC *mg = CORO_MAGIC_cv (cv);
446 AV *av; 629 size_t *lenp;
447 630
448 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 631 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
449 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 632 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
450 else 633 else
451 { 634 {
452#if CORO_PREFER_PERL_FUNCTIONS 635#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 636 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 637 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 638 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 639 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 640 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 641 SvREFCNT_dec (cp);
459#else 642#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 643 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
461#endif 644#endif
462 } 645 }
463} 646}
464 647
465static void 648ecb_inline void
466put_padlist (pTHX_ CV *cv) 649put_padlist (pTHX_ CV *cv)
467{ 650{
468 MAGIC *mg = CORO_MAGIC_cv (cv); 651 MAGIC *mg = CORO_MAGIC_cv (cv);
469 AV *av;
470 652
471 if (expect_false (!mg)) 653 if (ecb_expect_false (!mg))
654 {
472 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 655 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
656 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
657 mg->mg_len = 1; /* so mg_free frees mg_ptr */
658 }
659 else
660 Renew (mg->mg_ptr,
661 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
662 char);
473 663
474 av = (AV *)mg->mg_obj; 664 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
475
476 if (expect_false (AvFILLp (av) >= AvMAX (av)))
477 av_extend (av, AvMAX (av) + 1);
478
479 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
480} 665}
481 666
482/** load & save, init *******************************************************/ 667/** load & save, init *******************************************************/
668
669ecb_inline void
670swap_sv (SV *a, SV *b)
671{
672 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
673 SV tmp;
674
675 /* swap sv_any */
676 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
677
678 /* swap sv_flags */
679 SvFLAGS (&tmp) = SvFLAGS (a);
680 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
681 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
682
683#if PERL_VERSION_ATLEAST (5,10,0)
684 /* perl 5.10 and later complicates this _quite_ a bit, but it also
685 * is much faster, so no quarrels here. alternatively, we could
686 * sv_upgrade to avoid this.
687 */
688 {
689 /* swap sv_u */
690 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
691
692 /* if SvANY points to the head, we need to adjust the pointers,
693 * as the pointer for a still points to b, and maybe vice versa.
694 */
695 #define svany_in_head(type) \
696 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
697
698 if (svany_in_head (SvTYPE (a)))
699 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
700
701 if (svany_in_head (SvTYPE (b)))
702 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
703 }
704#endif
705}
706
707/* swap sv heads, at least logically */
708static void
709swap_svs (pTHX_ Coro__State c)
710{
711 int i;
712
713 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
714 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
715}
716
717#define SWAP_SVS(coro) \
718 if (ecb_expect_false ((coro)->swap_sv)) \
719 swap_svs (aTHX_ (coro))
720
721static void
722on_enterleave_call (pTHX_ SV *cb);
483 723
484static void 724static void
485load_perl (pTHX_ Coro__State c) 725load_perl (pTHX_ Coro__State c)
486{ 726{
487 perl_slots *slot = c->slot; 727 perl_slots *slot = c->slot;
488 c->slot = 0; 728 c->slot = 0;
489 729
490 PL_mainstack = c->mainstack; 730 PL_mainstack = c->mainstack;
491 731
492 GvSV (PL_defgv) = slot->defsv; 732#if CORO_JIT
493 GvAV (PL_defgv) = slot->defav; 733 load_perl_slots (slot);
494 GvSV (PL_errgv) = slot->errsv; 734#else
495 GvSV (irsgv) = slot->irsgv;
496
497 #define VAR(name,type) PL_ ## name = slot->name; 735 #define VARx(name,expr,type) expr = slot->name;
498 # include "state.h" 736 #include "state.h"
499 #undef VAR 737#endif
500 738
501 { 739 {
502 dSP; 740 dSP;
503 741
504 CV *cv; 742 CV *cv;
505 743
506 /* now do the ugly restore mess */ 744 /* now do the ugly restore mess */
507 while (expect_true (cv = (CV *)POPs)) 745 while (ecb_expect_true (cv = (CV *)POPs))
508 { 746 {
509 put_padlist (aTHX_ cv); /* mark this padlist as available */ 747 put_padlist (aTHX_ cv); /* mark this padlist as available */
510 CvDEPTH (cv) = PTR2IV (POPs); 748 CvDEPTH (cv) = PTR2IV (POPs);
511 CvPADLIST (cv) = (AV *)POPs; 749 CvPADLIST (cv) = (PADLIST *)POPs;
512 } 750 }
513 751
514 PUTBACK; 752 PUTBACK;
515 } 753 }
754
755 slf_frame = c->slf_frame;
756 CORO_THROW = c->except;
757
758 if (ecb_expect_false (enable_times))
759 {
760 if (ecb_expect_false (!times_valid))
761 coro_times_update ();
762
763 coro_times_sub (c);
764 }
765
766 if (ecb_expect_false (c->on_enter))
767 {
768 int i;
769
770 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
771 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
772 }
773
774 SWAP_SVS (c);
516} 775}
517 776
518static void 777static void
519save_perl (pTHX_ Coro__State c) 778save_perl (pTHX_ Coro__State c)
520{ 779{
780 SWAP_SVS (c);
781
782 if (ecb_expect_false (c->on_leave))
783 {
784 int i;
785
786 for (i = AvFILLp (c->on_leave); i >= 0; --i)
787 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
788 }
789
790 times_valid = 0;
791
792 if (ecb_expect_false (enable_times))
793 {
794 coro_times_update (); times_valid = 1;
795 coro_times_add (c);
796 }
797
798 c->except = CORO_THROW;
799 c->slf_frame = slf_frame;
800
521 { 801 {
522 dSP; 802 dSP;
523 I32 cxix = cxstack_ix; 803 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 804 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 805 PERL_SI *top_si = PL_curstackinfo;
… …
531 811
532 XPUSHs (Nullsv); 812 XPUSHs (Nullsv);
533 /* this loop was inspired by pp_caller */ 813 /* this loop was inspired by pp_caller */
534 for (;;) 814 for (;;)
535 { 815 {
536 while (expect_true (cxix >= 0)) 816 while (ecb_expect_true (cxix >= 0))
537 { 817 {
538 PERL_CONTEXT *cx = &ccstk[cxix--]; 818 PERL_CONTEXT *cx = &ccstk[cxix--];
539 819
540 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 820 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
541 { 821 {
542 CV *cv = cx->blk_sub.cv; 822 CV *cv = cx->blk_sub.cv;
543 823
544 if (expect_true (CvDEPTH (cv))) 824 if (ecb_expect_true (CvDEPTH (cv)))
545 { 825 {
546 EXTEND (SP, 3); 826 EXTEND (SP, 3);
547 PUSHs ((SV *)CvPADLIST (cv)); 827 PUSHs ((SV *)CvPADLIST (cv));
548 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 828 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
549 PUSHs ((SV *)cv); 829 PUSHs ((SV *)cv);
… …
552 get_padlist (aTHX_ cv); 832 get_padlist (aTHX_ cv);
553 } 833 }
554 } 834 }
555 } 835 }
556 836
557 if (expect_true (top_si->si_type == PERLSI_MAIN)) 837 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
558 break; 838 break;
559 839
560 top_si = top_si->si_prev; 840 top_si = top_si->si_prev;
561 ccstk = top_si->si_cxstack; 841 ccstk = top_si->si_cxstack;
562 cxix = top_si->si_cxix; 842 cxix = top_si->si_cxix;
… …
564 844
565 PUTBACK; 845 PUTBACK;
566 } 846 }
567 847
568 /* allocate some space on the context stack for our purposes */ 848 /* allocate some space on the context stack for our purposes */
569 /* we manually unroll here, as usually 2 slots is enough */ 849 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
570 if (SLOT_COUNT >= 1) CXINC;
571 if (SLOT_COUNT >= 2) CXINC;
572 if (SLOT_COUNT >= 3) CXINC;
573 { 850 {
574 int i; 851 unsigned int i;
852
575 for (i = 3; i < SLOT_COUNT; ++i) 853 for (i = 0; i < SLOT_COUNT; ++i)
576 CXINC; 854 CXINC;
577 } 855
578 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 856 cxstack_ix -= SLOT_COUNT; /* undo allocation */
857 }
579 858
580 c->mainstack = PL_mainstack; 859 c->mainstack = PL_mainstack;
581 860
582 { 861 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 862 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584 863
585 slot->defav = GvAV (PL_defgv); 864#if CORO_JIT
586 slot->defsv = DEFSV; 865 save_perl_slots (slot);
587 slot->errsv = ERRSV; 866#else
588 slot->irsgv = GvSV (irsgv);
589
590 #define VAR(name,type) slot->name = PL_ ## name; 867 #define VARx(name,expr,type) slot->name = expr;
591 # include "state.h" 868 #include "state.h"
592 #undef VAR 869#endif
593 } 870 }
594} 871}
595 872
596/* 873/*
597 * allocate various perl stacks. This is an exact copy 874 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 875 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 876 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 877 * not usually need a lot of stackspace.
601 */ 878 */
602#if CORO_PREFER_PERL_FUNCTIONS 879#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 880# define coro_init_stacks(thx) init_stacks ()
604#else 881#else
605static void 882static void
606coro_init_stacks (pTHX) 883coro_init_stacks (pTHX)
607{ 884{
608 PL_curstackinfo = new_stackinfo(32, 8); 885 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
609 PL_curstackinfo->si_type = PERLSI_MAIN; 886 PL_curstackinfo->si_type = PERLSI_MAIN;
610 PL_curstack = PL_curstackinfo->si_stack; 887 PL_curstack = PL_curstackinfo->si_stack;
611 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 888 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
612 889
613 PL_stack_base = AvARRAY(PL_curstack); 890 PL_stack_base = AvARRAY(PL_curstack);
… …
628#endif 905#endif
629 906
630 New(54,PL_scopestack,8,I32); 907 New(54,PL_scopestack,8,I32);
631 PL_scopestack_ix = 0; 908 PL_scopestack_ix = 0;
632 PL_scopestack_max = 8; 909 PL_scopestack_max = 8;
910#if HAS_SCOPESTACK_NAME
911 New(54,PL_scopestack_name,8,const char*);
912#endif
633 913
634 New(54,PL_savestack,24,ANY); 914 New(54,PL_savestack,24,ANY);
635 PL_savestack_ix = 0; 915 PL_savestack_ix = 0;
636 PL_savestack_max = 24; 916 PL_savestack_max = 24;
637 917
… …
665 } 945 }
666 946
667 Safefree (PL_tmps_stack); 947 Safefree (PL_tmps_stack);
668 Safefree (PL_markstack); 948 Safefree (PL_markstack);
669 Safefree (PL_scopestack); 949 Safefree (PL_scopestack);
950#if HAS_SCOPESTACK_NAME
951 Safefree (PL_scopestack_name);
952#endif
670 Safefree (PL_savestack); 953 Safefree (PL_savestack);
671#if !PERL_VERSION_ATLEAST (5,10,0) 954#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 955 Safefree (PL_retstack);
673#endif 956#endif
674} 957}
675 958
959#define CORO_RSS \
960 rss += sizeof (SYM (curstackinfo)); \
961 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
962 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
963 rss += SYM (tmps_max) * sizeof (SV *); \
964 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
965 rss += SYM (scopestack_max) * sizeof (I32); \
966 rss += SYM (savestack_max) * sizeof (ANY);
967
676static size_t 968static size_t
677coro_rss (pTHX_ struct coro *coro) 969coro_rss (pTHX_ struct coro *coro)
678{ 970{
679 size_t rss = sizeof (*coro); 971 size_t rss = sizeof (*coro);
680 972
681 if (coro->mainstack) 973 if (coro->mainstack)
682 { 974 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 975 if (coro->flags & CF_RUNNING)
687 { 976 {
688 slot = &tmp_slot; 977 #define SYM(sym) PL_ ## sym
689 978 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 979 #undef SYM
693 } 980 }
694 else 981 else
695 slot = coro->slot;
696
697 if (slot)
698 { 982 {
699 rss += sizeof (slot->curstackinfo); 983 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 984 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 985 #undef SYM
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 } 986 }
711 } 987 }
712 988
713 return rss; 989 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we sometimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 SV **bot = SP;
728
729 int gimme = GIMME_V;
730
731 /* make sure we put something on the stack in scalar context */
732 if (gimme == G_SCALAR)
733 {
734 if (sp == bot)
735 XPUSHs (&PL_sv_undef);
736
737 SP = bot + 1;
738 }
739
740 PUTBACK;
741} 990}
742 991
743/** coroutine stack handling ************************************************/ 992/** coroutine stack handling ************************************************/
744 993
745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 994static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
754#endif 1003#endif
755 1004
756/* 1005/*
757 * This overrides the default magic get method of %SIG elements. 1006 * This overrides the default magic get method of %SIG elements.
758 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1007 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
759 * and instead of tryign to save and restore the hash elements, we just provide 1008 * and instead of trying to save and restore the hash elements (extremely slow),
760 * readback here. 1009 * we just provide our own readback here.
761 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
762 * not expecting this to actually change the hook. This is a potential problem
763 * when a schedule happens then, but we ignore this.
764 */ 1010 */
765static int 1011static int ecb_cold
766coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1012coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
767{ 1013{
768 const char *s = MgPV_nolen_const (mg); 1014 const char *s = MgPV_nolen_const (mg);
769 1015
770 if (*s == '_') 1016 if (*s == '_')
771 { 1017 {
772 SV **svp = 0; 1018 SV **svp = 0;
773 1019
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1020 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1021 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776 1022
777 if (svp) 1023 if (svp)
778 { 1024 {
779 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1025 SV *ssv;
1026
1027 if (!*svp)
1028 ssv = &PL_sv_undef;
1029 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1030 ssv = sv_2mortal (newRV_inc (*svp));
1031 else
1032 ssv = *svp;
1033
1034 sv_setsv (sv, ssv);
780 return 0; 1035 return 0;
781 } 1036 }
782 } 1037 }
783 1038
784 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1039 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
785} 1040}
786 1041
787static int 1042static int ecb_cold
788coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1043coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
789{ 1044{
790 const char *s = MgPV_nolen_const (mg); 1045 const char *s = MgPV_nolen_const (mg);
791 1046
792 if (*s == '_') 1047 if (*s == '_')
… …
806 } 1061 }
807 1062
808 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1063 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
809} 1064}
810 1065
811static int 1066static int ecb_cold
812coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1067coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
813{ 1068{
814 const char *s = MgPV_nolen_const (mg); 1069 const char *s = MgPV_nolen_const (mg);
815 1070
816 if (*s == '_') 1071 if (*s == '_')
… …
821 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1076 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
822 1077
823 if (svp) 1078 if (svp)
824 { 1079 {
825 SV *old = *svp; 1080 SV *old = *svp;
826 *svp = newSVsv (sv); 1081 *svp = SvOK (sv) ? newSVsv (sv) : 0;
827 SvREFCNT_dec (old); 1082 SvREFCNT_dec (old);
828 return 0; 1083 return 0;
829 } 1084 }
830 } 1085 }
831 1086
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 1087 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833} 1088}
834 1089
835static void 1090static void
1091prepare_nop (pTHX_ struct coro_transfer_args *ta)
1092{
1093 /* kind of mega-hacky, but works */
1094 ta->next = ta->prev = (struct coro *)ta;
1095}
1096
1097static int
1098slf_check_nop (pTHX_ struct CoroSLF *frame)
1099{
1100 return 0;
1101}
1102
1103static int
1104slf_check_repeat (pTHX_ struct CoroSLF *frame)
1105{
1106 return 1;
1107}
1108
1109static UNOP init_perl_op;
1110
1111ecb_noinline static void /* noinline to keep it out of the transfer fast path */
836coro_setup (pTHX_ struct coro *coro) 1112init_perl (pTHX_ struct coro *coro)
837{ 1113{
838 /* 1114 /*
839 * emulate part of the perl startup here. 1115 * emulate part of the perl startup here.
840 */ 1116 */
841 coro_init_stacks (aTHX); 1117 coro_init_stacks (aTHX);
842 1118
843 PL_runops = RUNOPS_DEFAULT; 1119 PL_runops = RUNOPS_DEFAULT;
844 PL_curcop = &PL_compiling; 1120 PL_curcop = &PL_compiling;
845 PL_in_eval = EVAL_NULL; 1121 PL_in_eval = EVAL_NULL;
846 PL_comppad = 0; 1122 PL_comppad = 0;
1123 PL_comppad_name = 0;
1124 PL_comppad_name_fill = 0;
1125 PL_comppad_name_floor = 0;
847 PL_curpm = 0; 1126 PL_curpm = 0;
848 PL_curpad = 0; 1127 PL_curpad = 0;
849 PL_localizing = 0; 1128 PL_localizing = 0;
850 PL_dirty = 0;
851 PL_restartop = 0; 1129 PL_restartop = 0;
852#if PERL_VERSION_ATLEAST (5,10,0) 1130#if PERL_VERSION_ATLEAST (5,10,0)
853 PL_parser = 0; 1131 PL_parser = 0;
854#endif 1132#endif
1133 PL_hints = 0;
855 1134
856 /* recreate the die/warn hooks */ 1135 /* recreate the die/warn hooks */
857 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1136 PL_diehook = SvREFCNT_inc (rv_diehook);
858 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1137 PL_warnhook = SvREFCNT_inc (rv_warnhook);
859 1138
860 GvSV (PL_defgv) = newSV (0); 1139 GvSV (PL_defgv) = newSV (0);
861 GvAV (PL_defgv) = coro->args; coro->args = 0; 1140 GvAV (PL_defgv) = coro->args; coro->args = 0;
862 GvSV (PL_errgv) = newSV (0); 1141 GvSV (PL_errgv) = newSV (0);
863 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1142 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1143 GvHV (PL_hintgv) = 0;
864 PL_rs = newSVsv (GvSV (irsgv)); 1144 PL_rs = newSVsv (GvSV (irsgv));
865 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1145 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
866 1146
867 { 1147 {
868 dSP; 1148 dSP;
869 UNOP myop; 1149 UNOP myop;
870 1150
871 Zero (&myop, 1, UNOP); 1151 Zero (&myop, 1, UNOP);
872 myop.op_next = Nullop; 1152 myop.op_next = Nullop;
1153 myop.op_type = OP_ENTERSUB;
873 myop.op_flags = OPf_WANT_VOID; 1154 myop.op_flags = OPf_WANT_VOID;
874 1155
875 PUSHMARK (SP); 1156 PUSHMARK (SP);
876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1157 PUSHs ((SV *)coro->startcv);
877 PUTBACK; 1158 PUTBACK;
878 PL_op = (OP *)&myop; 1159 PL_op = (OP *)&myop;
879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1160 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
880 SPAGAIN;
881 } 1161 }
882 1162
883 /* this newly created coroutine might be run on an existing cctx which most 1163 /* this newly created coroutine might be run on an existing cctx which most
884 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 1164 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
885 * so we have to emulate entering pp_set_stacklevel here.
886 */ 1165 */
887 SSL_HEAD; 1166 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
888} 1167 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1168 slf_frame.destroy = 0;
889 1169
1170 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1171 init_perl_op.op_next = PL_op;
1172 init_perl_op.op_type = OP_ENTERSUB;
1173 init_perl_op.op_ppaddr = pp_slf;
1174 /* no flags etc. required, as an init function won't be called */
1175
1176 PL_op = (OP *)&init_perl_op;
1177
1178 /* copy throw, in case it was set before init_perl */
1179 CORO_THROW = coro->except;
1180
1181 SWAP_SVS (coro);
1182
1183 if (ecb_expect_false (enable_times))
1184 {
1185 coro_times_update ();
1186 coro_times_sub (coro);
1187 }
1188}
1189
890static void 1190static void
891coro_destruct (pTHX_ struct coro *coro) 1191coro_unwind_stacks (pTHX)
892{ 1192{
893 if (!IN_DESTRUCT) 1193 if (!IN_DESTRUCT)
894 { 1194 {
895 /* restore all saved variables and stuff */ 1195 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0); 1196 LEAVE_SCOPE (0);
… …
904 POPSTACK_TO (PL_mainstack); 1204 POPSTACK_TO (PL_mainstack);
905 1205
906 /* unwind main stack */ 1206 /* unwind main stack */
907 dounwind (-1); 1207 dounwind (-1);
908 } 1208 }
1209}
909 1210
910 SvREFCNT_dec (GvSV (PL_defgv)); 1211static void
911 SvREFCNT_dec (GvAV (PL_defgv)); 1212destroy_perl (pTHX_ struct coro *coro)
912 SvREFCNT_dec (GvSV (PL_errgv)); 1213{
913 SvREFCNT_dec (PL_defoutgv); 1214 SV *svf [9];
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916 1215
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919 1216 {
1217 SV *old_current = SvRV (coro_current);
1218 struct coro *current = SvSTATE (old_current);
1219
1220 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1221
1222 save_perl (aTHX_ current);
1223
1224 /* this will cause transfer_check to croak on block*/
1225 SvRV_set (coro_current, (SV *)coro->hv);
1226
1227 load_perl (aTHX_ coro);
1228
1229 coro_unwind_stacks (aTHX);
1230
1231 /* restore swapped sv's */
1232 SWAP_SVS (coro);
1233
1234 coro_destruct_stacks (aTHX);
1235
1236 /* now save some sv's to be free'd later */
1237 svf [0] = GvSV (PL_defgv);
1238 svf [1] = (SV *)GvAV (PL_defgv);
1239 svf [2] = GvSV (PL_errgv);
1240 svf [3] = (SV *)PL_defoutgv;
1241 svf [4] = PL_rs;
1242 svf [5] = GvSV (irsgv);
1243 svf [6] = (SV *)GvHV (PL_hintgv);
1244 svf [7] = PL_diehook;
1245 svf [8] = PL_warnhook;
1246 assert (9 == sizeof (svf) / sizeof (*svf));
1247
1248 SvRV_set (coro_current, old_current);
1249
1250 load_perl (aTHX_ current);
1251 }
1252
1253 {
1254 unsigned int i;
1255
1256 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1257 SvREFCNT_dec (svf [i]);
1258
920 SvREFCNT_dec (coro->saved_deffh); 1259 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw); 1260 SvREFCNT_dec (coro->rouse_cb);
922 1261 SvREFCNT_dec (coro->invoke_cb);
923 coro_destruct_stacks (aTHX); 1262 SvREFCNT_dec (coro->invoke_av);
1263 }
924} 1264}
925 1265
926INLINE void 1266ecb_inline void
927free_coro_mortal (pTHX) 1267free_coro_mortal (pTHX)
928{ 1268{
929 if (expect_true (coro_mortal)) 1269 if (ecb_expect_true (coro_mortal))
930 { 1270 {
931 SvREFCNT_dec (coro_mortal); 1271 SvREFCNT_dec ((SV *)coro_mortal);
932 coro_mortal = 0; 1272 coro_mortal = 0;
933 } 1273 }
934} 1274}
935 1275
936static int 1276static int
937runops_trace (pTHX) 1277runops_trace (pTHX)
938{ 1278{
939 COP *oldcop = 0; 1279 COP *oldcop = 0;
940 int oldcxix = -2; 1280 int oldcxix = -2;
941 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 1281
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1282 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 1283 {
946 PERL_ASYNC_CHECK (); 1284 PERL_ASYNC_CHECK ();
947 1285
948 if (cctx->flags & CC_TRACE_ALL) 1286 if (cctx_current->flags & CC_TRACE_ALL)
949 { 1287 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1288 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
951 { 1289 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1290 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 1291 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 1292 AV *av = newAV (); /* return values */
955 SV **cb; 1293 SV **cb;
… …
992 1330
993 if (PL_curcop != &PL_compiling) 1331 if (PL_curcop != &PL_compiling)
994 { 1332 {
995 SV **cb; 1333 SV **cb;
996 1334
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1335 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998 { 1336 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1337 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1338
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1339 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1340 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1341 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1342 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1343 SV *fullname = sv_2mortal (newSV (0));
1007 1344
1008 if (isGV (gv)) 1345 if (isGV (gv))
… …
1013 SAVETMPS; 1350 SAVETMPS;
1014 EXTEND (SP, 3); 1351 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1352 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1353 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1354 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1355 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK; 1356 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1357 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1358 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN; 1359 SPAGAIN;
1023 FREETMPS; 1360 FREETMPS;
… …
1026 } 1363 }
1027 1364
1028 oldcxix = cxstack_ix; 1365 oldcxix = cxstack_ix;
1029 } 1366 }
1030 1367
1031 if (cctx->flags & CC_TRACE_LINE) 1368 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1369 {
1033 dSP; 1370 dSP;
1034 1371
1035 PL_runops = RUNOPS_DEFAULT; 1372 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1373 ENTER;
… …
1055 1392
1056 TAINT_NOT; 1393 TAINT_NOT;
1057 return 0; 1394 return 0;
1058} 1395}
1059 1396
1397static struct CoroSLF cctx_ssl_frame;
1398
1060static void 1399static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1400slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1062{ 1401{
1063 ta->prev = (struct coro *)cctx;
1064 ta->next = 0; 1402 ta->prev = 0;
1065} 1403}
1066 1404
1067/* inject a fake call to Coro::State::_cctx_init into the execution */ 1405static int
1068/* _cctx_init should be careful, as it could be called at almost any time */ 1406slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1069/* during execution of a perl program */
1070/* also initialises PL_top_env */
1071static void NOINLINE
1072cctx_prepare (pTHX_ coro_cctx *cctx)
1073{ 1407{
1074 dSP; 1408 *frame = cctx_ssl_frame;
1075 UNOP myop;
1076 1409
1410 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1411}
1412
1413/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1414static void ecb_noinline
1415cctx_prepare (pTHX)
1416{
1077 PL_top_env = &PL_start_env; 1417 PL_top_env = &PL_start_env;
1078 1418
1079 if (cctx->flags & CC_TRACE) 1419 if (cctx_current->flags & CC_TRACE)
1080 PL_runops = runops_trace; 1420 PL_runops = runops_trace;
1081 1421
1082 Zero (&myop, 1, UNOP); 1422 /* we already must be executing an SLF op, there is no other valid way
1083 myop.op_next = PL_op; 1423 * that can lead to creation of a new cctx */
1084 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1424 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1425 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1085 1426
1086 PUSHMARK (SP); 1427 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1087 EXTEND (SP, 2); 1428 cctx_ssl_frame = slf_frame;
1088 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1429
1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1430 slf_frame.prepare = slf_prepare_set_stacklevel;
1090 PUTBACK; 1431 slf_frame.check = slf_check_set_stacklevel;
1091 PL_op = (OP *)&myop;
1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1093 SPAGAIN;
1094} 1432}
1095 1433
1096/* the tail of transfer: execute stuff we can only do after a transfer */ 1434/* the tail of transfer: execute stuff we can only do after a transfer */
1097INLINE void 1435ecb_inline void
1098transfer_tail (pTHX) 1436transfer_tail (pTHX)
1099{ 1437{
1100 struct coro *next = (struct coro *)transfer_next;
1101 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1102 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1103
1104 free_coro_mortal (aTHX); 1438 free_coro_mortal (aTHX);
1105 UNLOCK; 1439}
1106 1440
1107 if (expect_false (next->throw)) 1441/* try to exit the same way perl's main function would do */
1108 { 1442/* we do not bother resetting the environment or other things *7
1109 SV *exception = sv_2mortal (next->throw); 1443/* that are not, uhm, essential */
1110 1444/* this obviously also doesn't work when perl is embedded */
1111 next->throw = 0; 1445static void ecb_noinline ecb_cold
1112 sv_setsv (ERRSV, exception); 1446perlish_exit (pTHX)
1113 croak (0); 1447{
1114 } 1448 int exitstatus = perl_destruct (PL_curinterp);
1449 perl_free (PL_curinterp);
1450 exit (exitstatus);
1115} 1451}
1116 1452
1117/* 1453/*
1118 * this is a _very_ stripped down perl interpreter ;) 1454 * this is a _very_ stripped down perl interpreter ;)
1119 */ 1455 */
… …
1126# endif 1462# endif
1127#endif 1463#endif
1128 { 1464 {
1129 dTHX; 1465 dTHX;
1130 1466
1131 /* we are the alternative tail to pp_set_stacklevel */ 1467 /* normally we would need to skip the entersub here */
1132 /* so do the same things here */ 1468 /* not doing so will re-execute it, which is exactly what we want */
1133 SSL_TAIL;
1134
1135 /* we now skip the op that did lead to transfer() */
1136 PL_op = PL_op->op_next; 1469 /* PL_nop = PL_nop->op_next */
1137 1470
1138 /* inject a fake subroutine call to cctx_init */ 1471 /* inject a fake subroutine call to cctx_init */
1139 cctx_prepare (aTHX_ (coro_cctx *)arg); 1472 cctx_prepare (aTHX);
1140 1473
1141 /* cctx_run is the alternative tail of transfer() */ 1474 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX); 1475 transfer_tail (aTHX);
1143 1476
1144 /* somebody or something will hit me for both perl_run and PL_restartop */ 1477 /* somebody or something will hit me for both perl_run and PL_restartop */
1145 PL_restartop = PL_op; 1478 PL_restartop = PL_op;
1146 perl_run (PL_curinterp); 1479 perl_run (PL_curinterp);
1480 /*
1481 * Unfortunately, there is no way to get at the return values of the
1482 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1483 * runtime errors here, as this is just a random interpreter, not a thread.
1484 */
1147 1485
1148 /* 1486 /*
1149 * If perl-run returns we assume exit() was being called or the coro 1487 * If perl-run returns we assume exit() was being called or the coro
1150 * fell off the end, which seems to be the only valid (non-bug) 1488 * fell off the end, which seems to be the only valid (non-bug)
1151 * reason for perl_run to return. We try to exit by jumping to the 1489 * reason for perl_run to return. We try to mimic whatever perl is normally
1152 * bootstrap-time "top" top_env, as we cannot restore the "main" 1490 * doing in that case. YMMV.
1153 * coroutine as Coro has no such concept
1154 */ 1491 */
1155 PL_top_env = main_top_env; 1492 perlish_exit (aTHX);
1156 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1157 } 1493 }
1158} 1494}
1159 1495
1160static coro_cctx * 1496static coro_cctx *
1161cctx_new () 1497cctx_new (void)
1162{ 1498{
1163 coro_cctx *cctx; 1499 coro_cctx *cctx;
1164 1500
1165 ++cctx_count; 1501 ++cctx_count;
1166 New (0, cctx, 1, coro_cctx); 1502 New (0, cctx, 1, coro_cctx);
… …
1172 return cctx; 1508 return cctx;
1173} 1509}
1174 1510
1175/* create a new cctx only suitable as source */ 1511/* create a new cctx only suitable as source */
1176static coro_cctx * 1512static coro_cctx *
1177cctx_new_empty () 1513cctx_new_empty (void)
1178{ 1514{
1179 coro_cctx *cctx = cctx_new (); 1515 coro_cctx *cctx = cctx_new ();
1180 1516
1181 cctx->sptr = 0; 1517 cctx->stack.sptr = 0;
1182 coro_create (&cctx->cctx, 0, 0, 0, 0); 1518 coro_create (&cctx->cctx, 0, 0, 0, 0);
1183 1519
1184 return cctx; 1520 return cctx;
1185} 1521}
1186 1522
1187/* create a new cctx suitable as destination/running a perl interpreter */ 1523/* create a new cctx suitable as destination/running a perl interpreter */
1188static coro_cctx * 1524static coro_cctx *
1189cctx_new_run () 1525cctx_new_run (void)
1190{ 1526{
1191 coro_cctx *cctx = cctx_new (); 1527 coro_cctx *cctx = cctx_new ();
1192 void *stack_start;
1193 size_t stack_size;
1194 1528
1195#if HAVE_MMAP 1529 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1196 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1197 /* mmap supposedly does allocate-on-write for us */
1198 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1199
1200 if (cctx->sptr != (void *)-1)
1201 {
1202 #if CORO_STACKGUARD
1203 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1204 #endif
1205 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1206 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1207 cctx->flags |= CC_MAPPED;
1208 } 1530 {
1209 else
1210#endif
1211 {
1212 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1213 New (0, cctx->sptr, cctx_stacksize, long);
1214
1215 if (!cctx->sptr)
1216 {
1217 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1531 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1218 _exit (EXIT_FAILURE); 1532 _exit (EXIT_FAILURE);
1219 }
1220
1221 stack_start = cctx->sptr;
1222 stack_size = cctx->ssize;
1223 } 1533 }
1224 1534
1225 #if CORO_USE_VALGRIND
1226 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1227 #endif
1228
1229 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1535 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1230 1536
1231 return cctx; 1537 return cctx;
1232} 1538}
1233 1539
1234static void 1540static void
1235cctx_destroy (coro_cctx *cctx) 1541cctx_destroy (coro_cctx *cctx)
1236{ 1542{
1237 if (!cctx) 1543 if (!cctx)
1238 return; 1544 return;
1239 1545
1546 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1547
1240 --cctx_count; 1548 --cctx_count;
1241 coro_destroy (&cctx->cctx); 1549 coro_destroy (&cctx->cctx);
1242 1550
1243 /* coro_transfer creates new, empty cctx's */ 1551 coro_stack_free (&cctx->stack);
1244 if (cctx->sptr)
1245 {
1246 #if CORO_USE_VALGRIND
1247 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1248 #endif
1249
1250#if HAVE_MMAP
1251 if (cctx->flags & CC_MAPPED)
1252 munmap (cctx->sptr, cctx->ssize);
1253 else
1254#endif
1255 Safefree (cctx->sptr);
1256 }
1257 1552
1258 Safefree (cctx); 1553 Safefree (cctx);
1259} 1554}
1260 1555
1261/* wether this cctx should be destructed */ 1556/* wether this cctx should be destructed */
1262#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1557#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1263 1558
1264static coro_cctx * 1559static coro_cctx *
1265cctx_get (pTHX) 1560cctx_get (pTHX)
1266{ 1561{
1267 while (expect_true (cctx_first)) 1562 while (ecb_expect_true (cctx_first))
1268 { 1563 {
1269 coro_cctx *cctx = cctx_first; 1564 coro_cctx *cctx = cctx_first;
1270 cctx_first = cctx->next; 1565 cctx_first = cctx->next;
1271 --cctx_idle; 1566 --cctx_idle;
1272 1567
1273 if (expect_true (!CCTX_EXPIRED (cctx))) 1568 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1274 return cctx; 1569 return cctx;
1275 1570
1276 cctx_destroy (cctx); 1571 cctx_destroy (cctx);
1277 } 1572 }
1278 1573
… …
1280} 1575}
1281 1576
1282static void 1577static void
1283cctx_put (coro_cctx *cctx) 1578cctx_put (coro_cctx *cctx)
1284{ 1579{
1285 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1580 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1286 1581
1287 /* free another cctx if overlimit */ 1582 /* free another cctx if overlimit */
1288 if (expect_false (cctx_idle >= cctx_max_idle)) 1583 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1289 { 1584 {
1290 coro_cctx *first = cctx_first; 1585 coro_cctx *first = cctx_first;
1291 cctx_first = first->next; 1586 cctx_first = first->next;
1292 --cctx_idle; 1587 --cctx_idle;
1293 1588
… …
1302/** coroutine switching *****************************************************/ 1597/** coroutine switching *****************************************************/
1303 1598
1304static void 1599static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next) 1600transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{ 1601{
1602 /* TODO: throwing up here is considered harmful */
1603
1307 if (expect_true (prev != next)) 1604 if (ecb_expect_true (prev != next))
1308 { 1605 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1606 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1310 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1607 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1311 1608
1312 if (expect_false (next->flags & CF_RUNNING)) 1609 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1313 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1314
1315 if (expect_false (next->flags & CF_DESTROYED))
1316 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1610 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1317 1611
1318#if !PERL_VERSION_ATLEAST (5,10,0) 1612#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1613 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1320 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1614 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1321#endif 1615#endif
1322 } 1616 }
1323} 1617}
1324 1618
1325/* always use the TRANSFER macro */ 1619/* always use the TRANSFER macro */
1326static void NOINLINE 1620static void ecb_noinline /* noinline so we have a fixed stackframe */
1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1621transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1328{ 1622{
1329 dSTACKLEVEL; 1623 dSTACKLEVEL;
1330 1624
1331 /* sometimes transfer is only called to set idle_sp */ 1625 /* sometimes transfer is only called to set idle_sp */
1332 if (expect_false (!next)) 1626 if (ecb_expect_false (!prev))
1333 { 1627 {
1334 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1628 cctx_current->idle_sp = STACKLEVEL;
1335 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1629 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1336 } 1630 }
1337 else if (expect_true (prev != next)) 1631 else if (ecb_expect_true (prev != next))
1338 { 1632 {
1339 coro_cctx *prev__cctx; 1633 coro_cctx *cctx_prev;
1340 1634
1341 if (expect_false (prev->flags & CF_NEW)) 1635 if (ecb_expect_false (prev->flags & CF_NEW))
1342 { 1636 {
1343 /* create a new empty/source context */ 1637 /* create a new empty/source context */
1344 prev->cctx = cctx_new_empty ();
1345 prev->flags &= ~CF_NEW; 1638 prev->flags &= ~CF_NEW;
1346 prev->flags |= CF_RUNNING; 1639 prev->flags |= CF_RUNNING;
1347 } 1640 }
1348 1641
1349 prev->flags &= ~CF_RUNNING; 1642 prev->flags &= ~CF_RUNNING;
1350 next->flags |= CF_RUNNING; 1643 next->flags |= CF_RUNNING;
1351 1644
1352 LOCK;
1353
1354 /* first get rid of the old state */ 1645 /* first get rid of the old state */
1355 save_perl (aTHX_ prev); 1646 save_perl (aTHX_ prev);
1356 1647
1357 if (expect_false (next->flags & CF_NEW)) 1648 if (ecb_expect_false (next->flags & CF_NEW))
1358 { 1649 {
1359 /* need to start coroutine */ 1650 /* need to start coroutine */
1360 next->flags &= ~CF_NEW; 1651 next->flags &= ~CF_NEW;
1361 /* setup coroutine call */ 1652 /* setup coroutine call */
1362 coro_setup (aTHX_ next); 1653 init_perl (aTHX_ next);
1363 } 1654 }
1364 else 1655 else
1365 load_perl (aTHX_ next); 1656 load_perl (aTHX_ next);
1366 1657
1367 prev__cctx = prev->cctx;
1368
1369 /* possibly untie and reuse the cctx */ 1658 /* possibly untie and reuse the cctx */
1370 if (expect_true ( 1659 if (ecb_expect_true (
1371 prev__cctx->idle_sp == STACKLEVEL 1660 cctx_current->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE) 1661 && !(cctx_current->flags & CC_TRACE)
1373 && !force_cctx 1662 && !force_cctx
1374 )) 1663 ))
1375 { 1664 {
1376 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1665 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1377 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1666 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1378 1667
1379 prev->cctx = 0;
1380
1381 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1668 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1382 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1669 /* without this the next cctx_get might destroy the running cctx while still in use */
1383 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1670 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1384 if (!next->cctx) 1671 if (ecb_expect_true (!next->cctx))
1385 next->cctx = cctx_get (aTHX); 1672 next->cctx = cctx_get (aTHX);
1386 1673
1387 cctx_put (prev__cctx); 1674 cctx_put (cctx_current);
1388 } 1675 }
1676 else
1677 prev->cctx = cctx_current;
1389 1678
1390 ++next->usecount; 1679 ++next->usecount;
1391 1680
1392 if (expect_true (!next->cctx)) 1681 cctx_prev = cctx_current;
1393 next->cctx = cctx_get (aTHX); 1682 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1394 1683
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1684 next->cctx = 0;
1396 transfer_next = next;
1397 1685
1398 if (expect_false (prev__cctx != next->cctx)) 1686 if (ecb_expect_false (cctx_prev != cctx_current))
1399 { 1687 {
1400 prev__cctx->top_env = PL_top_env; 1688 cctx_prev->top_env = PL_top_env;
1401 PL_top_env = next->cctx->top_env; 1689 PL_top_env = cctx_current->top_env;
1402 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1690 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1403 } 1691 }
1404 1692
1405 transfer_tail (aTHX); 1693 transfer_tail (aTHX);
1406 } 1694 }
1407} 1695}
… …
1409#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1697#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1410#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1698#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1411 1699
1412/** high level stuff ********************************************************/ 1700/** high level stuff ********************************************************/
1413 1701
1702/* this function is actually Coro, not Coro::State, but we call it from here */
1703/* because it is convenient - but it hasn't been declared yet for that reason */
1414static int 1704static void
1705coro_call_on_destroy (pTHX_ struct coro *coro);
1706
1707static void
1415coro_state_destroy (pTHX_ struct coro *coro) 1708coro_state_destroy (pTHX_ struct coro *coro)
1416{ 1709{
1417 if (coro->flags & CF_DESTROYED) 1710 if (coro->flags & CF_ZOMBIE)
1418 return 0; 1711 return;
1419 1712
1713 slf_destroy (aTHX_ coro);
1714
1420 coro->flags |= CF_DESTROYED; 1715 coro->flags |= CF_ZOMBIE;
1421 1716
1422 if (coro->flags & CF_READY) 1717 if (coro->flags & CF_READY)
1423 { 1718 {
1424 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1719 /* reduce nready, as destroying a ready coro effectively unreadies it */
1425 /* alternative: look through all ready queues and remove the coro */ 1720 /* alternative: look through all ready queues and remove the coro */
1426 LOCK;
1427 --coro_nready; 1721 --coro_nready;
1428 UNLOCK;
1429 } 1722 }
1430 else 1723 else
1431 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1724 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1432
1433 if (coro->mainstack && coro->mainstack != main_mainstack)
1434 {
1435 struct coro temp;
1436
1437 if (coro->flags & CF_RUNNING)
1438 croak ("FATAL: tried to destroy currently running coroutine");
1439
1440 save_perl (aTHX_ &temp);
1441 load_perl (aTHX_ coro);
1442
1443 coro_destruct (aTHX_ coro);
1444
1445 load_perl (aTHX_ &temp);
1446
1447 coro->slot = 0;
1448 }
1449
1450 cctx_destroy (coro->cctx);
1451 SvREFCNT_dec (coro->args);
1452 1725
1453 if (coro->next) coro->next->prev = coro->prev; 1726 if (coro->next) coro->next->prev = coro->prev;
1454 if (coro->prev) coro->prev->next = coro->next; 1727 if (coro->prev) coro->prev->next = coro->next;
1455 if (coro == coro_first) coro_first = coro->next; 1728 if (coro == coro_first) coro_first = coro->next;
1456 1729
1457 return 1; 1730 if (coro->mainstack
1731 && coro->mainstack != main_mainstack
1732 && coro->slot
1733 && !PL_dirty)
1734 destroy_perl (aTHX_ coro);
1735
1736 cctx_destroy (coro->cctx);
1737 SvREFCNT_dec (coro->startcv);
1738 SvREFCNT_dec (coro->args);
1739 SvREFCNT_dec (coro->swap_sv);
1740 SvREFCNT_dec (CORO_THROW);
1741
1742 coro_call_on_destroy (aTHX_ coro);
1743
1744 /* more destruction mayhem in coro_state_free */
1458} 1745}
1459 1746
1460static int 1747static int
1461coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1748coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1462{ 1749{
1463 struct coro *coro = (struct coro *)mg->mg_ptr; 1750 struct coro *coro = (struct coro *)mg->mg_ptr;
1464 mg->mg_ptr = 0; 1751 mg->mg_ptr = 0;
1465 1752
1466 coro->hv = 0;
1467
1468 if (--coro->refcnt < 0)
1469 {
1470 coro_state_destroy (aTHX_ coro); 1753 coro_state_destroy (aTHX_ coro);
1754 SvREFCNT_dec (coro->on_destroy);
1755 SvREFCNT_dec (coro->status);
1756
1471 Safefree (coro); 1757 Safefree (coro);
1472 }
1473 1758
1474 return 0; 1759 return 0;
1475} 1760}
1476 1761
1477static int 1762static int ecb_cold
1478coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1763coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1479{ 1764{
1480 struct coro *coro = (struct coro *)mg->mg_ptr; 1765 /* called when perl clones the current process the slow way (windows process emulation) */
1481 1766 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1482 ++coro->refcnt; 1767 mg->mg_ptr = 0;
1768 mg->mg_virtual = 0;
1483 1769
1484 return 0; 1770 return 0;
1485} 1771}
1486 1772
1487static MGVTBL coro_state_vtbl = { 1773static MGVTBL coro_state_vtbl = {
… …
1494# define MGf_DUP 0 1780# define MGf_DUP 0
1495#endif 1781#endif
1496}; 1782};
1497 1783
1498static void 1784static void
1499prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1785prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1500{ 1786{
1501 ta->prev = SvSTATE (prev_sv); 1787 ta->prev = SvSTATE (prev_sv);
1502 ta->next = SvSTATE (next_sv); 1788 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta); 1789 TRANSFER_CHECK (*ta);
1504} 1790}
1505 1791
1506static void 1792static void
1507api_transfer (SV *prev_sv, SV *next_sv) 1793api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1508{ 1794{
1509 dTHX;
1510 struct transfer_args ta; 1795 struct coro_transfer_args ta;
1511 1796
1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1797 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1513 TRANSFER (ta, 1); 1798 TRANSFER (ta, 1);
1514} 1799}
1515 1800
1516/** Coro ********************************************************************/ 1801/** Coro ********************************************************************/
1517 1802
1518static void 1803ecb_inline void
1519coro_enq (pTHX_ SV *coro_sv) 1804coro_enq (pTHX_ struct coro *coro)
1520{ 1805{
1521 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1806 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1522}
1523 1807
1524static SV * 1808 SvREFCNT_inc_NN (coro->hv);
1809
1810 coro->next_ready = 0;
1811 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1812 ready [1] = coro;
1813}
1814
1815ecb_inline struct coro *
1525coro_deq (pTHX) 1816coro_deq (pTHX)
1526{ 1817{
1527 int prio; 1818 int prio;
1528 1819
1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1820 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1530 if (AvFILLp (coro_ready [prio]) >= 0) 1821 {
1531 return av_shift (coro_ready [prio]); 1822 struct coro **ready = coro_ready [prio];
1823
1824 if (ready [0])
1825 {
1826 struct coro *coro = ready [0];
1827 ready [0] = coro->next_ready;
1828 return coro;
1829 }
1830 }
1532 1831
1533 return 0; 1832 return 0;
1534} 1833}
1535 1834
1835static void
1836invoke_sv_ready_hook_helper (void)
1837{
1838 dTHX;
1839 dSP;
1840
1841 ENTER;
1842 SAVETMPS;
1843
1844 PUSHMARK (SP);
1845 PUTBACK;
1846 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1847
1848 FREETMPS;
1849 LEAVE;
1850}
1851
1536static int 1852static int
1537api_ready (SV *coro_sv) 1853api_ready (pTHX_ SV *coro_sv)
1538{ 1854{
1539 dTHX;
1540 struct coro *coro;
1541 SV *sv_hook;
1542 void (*xs_hook)(void);
1543
1544 if (SvROK (coro_sv))
1545 coro_sv = SvRV (coro_sv);
1546
1547 coro = SvSTATE (coro_sv); 1855 struct coro *coro = SvSTATE (coro_sv);
1548 1856
1549 if (coro->flags & CF_READY) 1857 if (coro->flags & CF_READY)
1550 return 0; 1858 return 0;
1551 1859
1552 coro->flags |= CF_READY; 1860 coro->flags |= CF_READY;
1553 1861
1554 LOCK; 1862 coro_enq (aTHX_ coro);
1555 1863
1556 sv_hook = coro_nready ? 0 : coro_readyhook; 1864 if (!coro_nready++)
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1865 if (coroapi.readyhook)
1558 1866 coroapi.readyhook ();
1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1560 ++coro_nready;
1561
1562 UNLOCK;
1563
1564 if (sv_hook)
1565 {
1566 dSP;
1567
1568 ENTER;
1569 SAVETMPS;
1570
1571 PUSHMARK (SP);
1572 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD);
1574 SPAGAIN;
1575
1576 FREETMPS;
1577 LEAVE;
1578 }
1579
1580 if (xs_hook)
1581 xs_hook ();
1582 1867
1583 return 1; 1868 return 1;
1584} 1869}
1585 1870
1586static int 1871static int
1587api_is_ready (SV *coro_sv) 1872api_is_ready (pTHX_ SV *coro_sv)
1588{ 1873{
1589 dTHX;
1590
1591 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1874 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1592} 1875}
1593 1876
1594INLINE void 1877/* expects to own a reference to next->hv */
1878ecb_inline void
1595prepare_schedule (pTHX_ struct transfer_args *ta) 1879prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1596{ 1880{
1597 SV *prev_sv, *next_sv;
1598
1599 for (;;)
1600 {
1601 LOCK;
1602 next_sv = coro_deq (aTHX);
1603
1604 /* nothing to schedule: call the idle handler */
1605 if (expect_false (!next_sv))
1606 {
1607 dSP;
1608 UNLOCK;
1609
1610 ENTER;
1611 SAVETMPS;
1612
1613 PUSHMARK (SP);
1614 PUTBACK;
1615 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1616 SPAGAIN;
1617
1618 FREETMPS;
1619 LEAVE;
1620 continue;
1621 }
1622
1623 ta->next = SvSTATE (next_sv);
1624
1625 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 {
1628 UNLOCK;
1629 SvREFCNT_dec (next_sv);
1630 /* coro_nready has already been taken care of by destroy */
1631 continue;
1632 }
1633
1634 --coro_nready;
1635 UNLOCK;
1636 break;
1637 }
1638
1639 /* free this only after the transfer */
1640 prev_sv = SvRV (coro_current); 1881 SV *prev_sv = SvRV (coro_current);
1882
1641 ta->prev = SvSTATE (prev_sv); 1883 ta->prev = SvSTATE_hv (prev_sv);
1884 ta->next = next;
1885
1642 TRANSFER_CHECK (*ta); 1886 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1887
1644 ta->next->flags &= ~CF_READY;
1645 SvRV_set (coro_current, next_sv); 1888 SvRV_set (coro_current, (SV *)next->hv);
1646 1889
1647 LOCK;
1648 free_coro_mortal (aTHX); 1890 free_coro_mortal (aTHX);
1649 coro_mortal = prev_sv; 1891 coro_mortal = prev_sv;
1650 UNLOCK;
1651} 1892}
1652 1893
1653INLINE void 1894static void
1895prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1896{
1897 for (;;)
1898 {
1899 struct coro *next = coro_deq (aTHX);
1900
1901 if (ecb_expect_true (next))
1902 {
1903 /* cannot transfer to destroyed coros, skip and look for next */
1904 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1905 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1906 else
1907 {
1908 next->flags &= ~CF_READY;
1909 --coro_nready;
1910
1911 prepare_schedule_to (aTHX_ ta, next);
1912 break;
1913 }
1914 }
1915 else
1916 {
1917 /* nothing to schedule: call the idle handler */
1918 if (SvROK (sv_idle)
1919 && SvOBJECT (SvRV (sv_idle)))
1920 {
1921 if (SvRV (sv_idle) == SvRV (coro_current))
1922 {
1923 require_pv ("Carp");
1924
1925 {
1926 dSP;
1927
1928 ENTER;
1929 SAVETMPS;
1930
1931 PUSHMARK (SP);
1932 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught", 0)));
1933 PUTBACK;
1934 call_pv ("Carp::confess", G_VOID | G_DISCARD);
1935
1936 FREETMPS;
1937 LEAVE;
1938 }
1939 }
1940
1941 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1942 api_ready (aTHX_ SvRV (sv_idle));
1943 --coro_nready;
1944 }
1945 else
1946 {
1947 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1948 dSP;
1949
1950 ENTER;
1951 SAVETMPS;
1952
1953 PUSHMARK (SP);
1954 PUTBACK;
1955 call_sv (sv_idle, G_VOID | G_DISCARD);
1956
1957 FREETMPS;
1958 LEAVE;
1959 }
1960 }
1961 }
1962}
1963
1964ecb_inline void
1654prepare_cede (pTHX_ struct transfer_args *ta) 1965prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655{ 1966{
1656 api_ready (coro_current); 1967 api_ready (aTHX_ coro_current);
1657 prepare_schedule (aTHX_ ta); 1968 prepare_schedule (aTHX_ ta);
1658} 1969}
1659 1970
1660static void 1971ecb_inline void
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 1972prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1662{ 1973{
1663 SV *prev = SvRV (coro_current); 1974 SV *prev = SvRV (coro_current);
1664 1975
1665 if (coro_nready) 1976 if (coro_nready)
1666 { 1977 {
1667 prepare_schedule (aTHX_ ta); 1978 prepare_schedule (aTHX_ ta);
1668 api_ready (prev); 1979 api_ready (aTHX_ prev);
1669 } 1980 }
1670 else 1981 else
1671 ta->prev = ta->next = SvSTATE (prev); 1982 prepare_nop (aTHX_ ta);
1672} 1983}
1673 1984
1674static void 1985static void
1675api_schedule (void) 1986api_schedule (pTHX)
1676{ 1987{
1677 dTHX;
1678 struct transfer_args ta; 1988 struct coro_transfer_args ta;
1679 1989
1680 prepare_schedule (aTHX_ &ta); 1990 prepare_schedule (aTHX_ &ta);
1681 TRANSFER (ta, 1); 1991 TRANSFER (ta, 1);
1682} 1992}
1683 1993
1994static void
1995api_schedule_to (pTHX_ SV *coro_sv)
1996{
1997 struct coro_transfer_args ta;
1998 struct coro *next = SvSTATE (coro_sv);
1999
2000 SvREFCNT_inc_NN (coro_sv);
2001 prepare_schedule_to (aTHX_ &ta, next);
2002}
2003
1684static int 2004static int
1685api_cede (void) 2005api_cede (pTHX)
1686{ 2006{
1687 dTHX;
1688 struct transfer_args ta; 2007 struct coro_transfer_args ta;
1689 2008
1690 prepare_cede (aTHX_ &ta); 2009 prepare_cede (aTHX_ &ta);
1691 2010
1692 if (expect_true (ta.prev != ta.next)) 2011 if (ecb_expect_true (ta.prev != ta.next))
1693 { 2012 {
1694 TRANSFER (ta, 1); 2013 TRANSFER (ta, 1);
1695 return 1; 2014 return 1;
1696 } 2015 }
1697 else 2016 else
1698 return 0; 2017 return 0;
1699} 2018}
1700 2019
1701static int 2020static int
1702api_cede_notself (void) 2021api_cede_notself (pTHX)
1703{ 2022{
1704 if (coro_nready) 2023 if (coro_nready)
1705 { 2024 {
1706 dTHX;
1707 struct transfer_args ta; 2025 struct coro_transfer_args ta;
1708 2026
1709 prepare_cede_notself (aTHX_ &ta); 2027 prepare_cede_notself (aTHX_ &ta);
1710 TRANSFER (ta, 1); 2028 TRANSFER (ta, 1);
1711 return 1; 2029 return 1;
1712 } 2030 }
1713 else 2031 else
1714 return 0; 2032 return 0;
1715} 2033}
1716 2034
1717static void 2035static void
1718api_trace (SV *coro_sv, int flags) 2036api_trace (pTHX_ SV *coro_sv, int flags)
1719{ 2037{
1720 dTHX;
1721 struct coro *coro = SvSTATE (coro_sv); 2038 struct coro *coro = SvSTATE (coro_sv);
2039
2040 if (coro->flags & CF_RUNNING)
2041 croak ("cannot enable tracing on a running coroutine, caught");
1722 2042
1723 if (flags & CC_TRACE) 2043 if (flags & CC_TRACE)
1724 { 2044 {
1725 if (!coro->cctx) 2045 if (!coro->cctx)
1726 coro->cctx = cctx_new_run (); 2046 coro->cctx = cctx_new_run ();
1727 else if (!(coro->cctx->flags & CC_TRACE)) 2047 else if (!(coro->cctx->flags & CC_TRACE))
1728 croak ("cannot enable tracing on coroutine with custom stack"); 2048 croak ("cannot enable tracing on coroutine with custom stack, caught");
1729 2049
1730 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2050 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1731 } 2051 }
1732 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2052 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1733 { 2053 {
… …
1738 else 2058 else
1739 coro->slot->runops = RUNOPS_DEFAULT; 2059 coro->slot->runops = RUNOPS_DEFAULT;
1740 } 2060 }
1741} 2061}
1742 2062
1743#if 0 2063static void
2064coro_push_av (pTHX_ AV *av, I32 gimme_v)
2065{
2066 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2067 {
2068 dSP;
2069
2070 if (gimme_v == G_SCALAR)
2071 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2072 else
2073 {
2074 int i;
2075 EXTEND (SP, AvFILLp (av) + 1);
2076
2077 for (i = 0; i <= AvFILLp (av); ++i)
2078 PUSHs (AvARRAY (av)[i]);
2079 }
2080
2081 PUTBACK;
2082 }
2083}
2084
2085static void
2086coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2087{
2088 if (!coro->on_destroy)
2089 coro->on_destroy = newAV ();
2090
2091 av_push (coro->on_destroy, cb);
2092}
2093
2094static void
2095slf_destroy_join (pTHX_ struct CoroSLF *frame)
2096{
2097 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2098}
2099
1744static int 2100static int
1745coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2101slf_check_join (pTHX_ struct CoroSLF *frame)
1746{ 2102{
1747 AV *padlist; 2103 struct coro *coro = (struct coro *)frame->data;
1748 AV *av = (AV *)mg->mg_obj;
1749 2104
1750 abort (); 2105 if (!coro->status)
2106 return 1;
2107
2108 frame->destroy = 0;
2109
2110 coro_push_av (aTHX_ coro->status, GIMME_V);
2111
2112 SvREFCNT_dec ((SV *)coro->hv);
1751 2113
1752 return 0; 2114 return 0;
1753} 2115}
1754 2116
1755static MGVTBL coro_gensub_vtbl = { 2117static void
1756 0, 0, 0, 0, 2118slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1757 coro_gensub_free 2119{
1758}; 2120 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
1759#endif 2121
2122 if (items > 1)
2123 croak ("join called with too many arguments");
2124
2125 if (coro->status)
2126 frame->prepare = prepare_nop;
2127 else
2128 {
2129 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2130 frame->prepare = prepare_schedule;
2131 }
2132
2133 frame->check = slf_check_join;
2134 frame->destroy = slf_destroy_join;
2135 frame->data = (void *)coro;
2136 SvREFCNT_inc (coro->hv);
2137}
2138
2139static void
2140coro_call_on_destroy (pTHX_ struct coro *coro)
2141{
2142 AV *od = coro->on_destroy;
2143
2144 if (!od)
2145 return;
2146
2147 coro->on_destroy = 0;
2148 sv_2mortal ((SV *)od);
2149
2150 while (AvFILLp (od) >= 0)
2151 {
2152 SV *cb = sv_2mortal (av_pop (od));
2153
2154 /* coro hv's (and only hv's at the moment) are supported as well */
2155 if (SvSTATEhv_p (aTHX_ cb))
2156 api_ready (aTHX_ cb);
2157 else
2158 {
2159 dSP; /* don't disturb outer sp */
2160 PUSHMARK (SP);
2161
2162 if (coro->status)
2163 {
2164 PUTBACK;
2165 coro_push_av (aTHX_ coro->status, G_ARRAY);
2166 SPAGAIN;
2167 }
2168
2169 PUTBACK;
2170 call_sv (cb, G_VOID | G_DISCARD);
2171 }
2172 }
2173}
2174
2175static void
2176coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2177{
2178 AV *av;
2179
2180 if (coro->status)
2181 {
2182 av = coro->status;
2183 av_clear (av);
2184 }
2185 else
2186 av = coro->status = newAV ();
2187
2188 /* items are actually not so common, so optimise for this case */
2189 if (items)
2190 {
2191 int i;
2192
2193 av_extend (av, items - 1);
2194
2195 for (i = 0; i < items; ++i)
2196 av_push (av, SvREFCNT_inc_NN (arg [i]));
2197 }
2198}
2199
2200static void
2201slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2202{
2203 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2204 api_ready (aTHX_ sv_manager);
2205
2206 frame->prepare = prepare_schedule;
2207 frame->check = slf_check_repeat;
2208
2209 /* as a minor optimisation, we could unwind all stacks here */
2210 /* but that puts extra pressure on pp_slf, and is not worth much */
2211 /*coro_unwind_stacks (aTHX);*/
2212}
2213
2214static void
2215slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2216{
2217 HV *coro_hv = (HV *)SvRV (coro_current);
2218
2219 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2220 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2221}
2222
2223static void
2224slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2225{
2226 HV *coro_hv;
2227 struct coro *coro;
2228
2229 if (items <= 0)
2230 croak ("Coro::cancel called without coro object,");
2231
2232 coro = SvSTATE (arg [0]);
2233 coro_hv = coro->hv;
2234
2235 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2236
2237 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2238 {
2239 /* coro currently busy cancelling something, so just notify it */
2240 coro->slf_frame.data = (void *)coro;
2241
2242 frame->prepare = prepare_nop;
2243 frame->check = slf_check_nop;
2244 }
2245 else if (coro_hv == (HV *)SvRV (coro_current))
2246 {
2247 /* cancelling the current coro is allowed, and equals terminate */
2248 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2249 }
2250 else
2251 {
2252 struct coro *self = SvSTATE_current;
2253
2254 /* otherwise we cancel directly, purely for speed reasons
2255 * unfortunately, this requires some magic trickery, as
2256 * somebody else could cancel us, so we have to fight the cancellation.
2257 * this is ugly, and hopefully fully worth the extra speed.
2258 * besides, I can't get the slow-but-safe version working...
2259 */
2260 slf_frame.data = 0;
2261 self->flags |= CF_NOCANCEL;
2262 coro_state_destroy (aTHX_ coro);
2263 self->flags &= ~CF_NOCANCEL;
2264
2265 if (slf_frame.data)
2266 {
2267 /* while we were busy we have been cancelled, so terminate */
2268 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2269 }
2270 else
2271 {
2272 frame->prepare = prepare_nop;
2273 frame->check = slf_check_nop;
2274 }
2275 }
2276}
2277
2278static int
2279slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2280{
2281 frame->prepare = 0;
2282 coro_unwind_stacks (aTHX);
2283
2284 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2285
2286 return 1;
2287}
2288
2289static int
2290safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2291{
2292 if (coro->cctx)
2293 croak ("coro inside C callback, unable to cancel at this time, caught");
2294
2295 if (coro->flags & CF_NEW)
2296 {
2297 coro_set_status (aTHX_ coro, arg, items);
2298 coro_state_destroy (aTHX_ coro);
2299 }
2300 else
2301 {
2302 if (!coro->slf_frame.prepare)
2303 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2304
2305 slf_destroy (aTHX_ coro);
2306
2307 coro_set_status (aTHX_ coro, arg, items);
2308 coro->slf_frame.prepare = prepare_nop;
2309 coro->slf_frame.check = slf_check_safe_cancel;
2310
2311 api_ready (aTHX_ (SV *)coro->hv);
2312 }
2313
2314 return 1;
2315}
2316
2317/*****************************************************************************/
2318/* async pool handler */
2319
2320static int
2321slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2322{
2323 HV *hv = (HV *)SvRV (coro_current);
2324 struct coro *coro = (struct coro *)frame->data;
2325
2326 if (!coro->invoke_cb)
2327 return 1; /* loop till we have invoke */
2328 else
2329 {
2330 hv_store (hv, "desc", sizeof ("desc") - 1,
2331 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2332
2333 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2334
2335 {
2336 dSP;
2337 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2338 PUTBACK;
2339 }
2340
2341 SvREFCNT_dec (GvAV (PL_defgv));
2342 GvAV (PL_defgv) = coro->invoke_av;
2343 coro->invoke_av = 0;
2344
2345 return 0;
2346 }
2347}
2348
2349static void
2350slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2351{
2352 HV *hv = (HV *)SvRV (coro_current);
2353 struct coro *coro = SvSTATE_hv ((SV *)hv);
2354
2355 if (ecb_expect_true (coro->saved_deffh))
2356 {
2357 /* subsequent iteration */
2358 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2359 coro->saved_deffh = 0;
2360
2361 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2362 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2363 {
2364 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2365 return;
2366 }
2367 else
2368 {
2369 av_clear (GvAV (PL_defgv));
2370 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2371
2372 coro->prio = 0;
2373
2374 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2375 api_trace (aTHX_ coro_current, 0);
2376
2377 frame->prepare = prepare_schedule;
2378 av_push (av_async_pool, SvREFCNT_inc (hv));
2379 }
2380 }
2381 else
2382 {
2383 /* first iteration, simply fall through */
2384 frame->prepare = prepare_nop;
2385 }
2386
2387 frame->check = slf_check_pool_handler;
2388 frame->data = (void *)coro;
2389}
2390
2391/*****************************************************************************/
2392/* rouse callback */
2393
2394#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2395
2396static void
2397coro_rouse_callback (pTHX_ CV *cv)
2398{
2399 dXSARGS;
2400 SV *data = (SV *)S_GENSUB_ARG;
2401
2402 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2403 {
2404 /* first call, set args */
2405 SV *coro = SvRV (data);
2406 AV *av = newAV ();
2407
2408 SvRV_set (data, (SV *)av);
2409
2410 /* better take a full copy of the arguments */
2411 while (items--)
2412 av_store (av, items, newSVsv (ST (items)));
2413
2414 api_ready (aTHX_ coro);
2415 SvREFCNT_dec (coro);
2416 }
2417
2418 XSRETURN_EMPTY;
2419}
2420
2421static int
2422slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2423{
2424 SV *data = (SV *)frame->data;
2425
2426 if (CORO_THROW)
2427 return 0;
2428
2429 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2430 return 1;
2431
2432 /* now push all results on the stack */
2433 {
2434 dSP;
2435 AV *av = (AV *)SvRV (data);
2436 int i;
2437
2438 EXTEND (SP, AvFILLp (av) + 1);
2439 for (i = 0; i <= AvFILLp (av); ++i)
2440 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2441
2442 /* we have stolen the elements, so set length to zero and free */
2443 AvFILLp (av) = -1;
2444 av_undef (av);
2445
2446 PUTBACK;
2447 }
2448
2449 return 0;
2450}
2451
2452static void
2453slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2454{
2455 SV *cb;
2456
2457 if (items)
2458 cb = arg [0];
2459 else
2460 {
2461 struct coro *coro = SvSTATE_current;
2462
2463 if (!coro->rouse_cb)
2464 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2465
2466 cb = sv_2mortal (coro->rouse_cb);
2467 coro->rouse_cb = 0;
2468 }
2469
2470 if (!SvROK (cb)
2471 || SvTYPE (SvRV (cb)) != SVt_PVCV
2472 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2473 croak ("Coro::rouse_wait called with illegal callback argument,");
2474
2475 {
2476 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2477 SV *data = (SV *)S_GENSUB_ARG;
2478
2479 frame->data = (void *)data;
2480 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2481 frame->check = slf_check_rouse_wait;
2482 }
2483}
2484
2485static SV *
2486coro_new_rouse_cb (pTHX)
2487{
2488 HV *hv = (HV *)SvRV (coro_current);
2489 struct coro *coro = SvSTATE_hv (hv);
2490 SV *data = newRV_inc ((SV *)hv);
2491 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2492
2493 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2494 SvREFCNT_dec (data); /* magicext increases the refcount */
2495
2496 SvREFCNT_dec (coro->rouse_cb);
2497 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2498
2499 return cb;
2500}
2501
2502/*****************************************************************************/
2503/* schedule-like-function opcode (SLF) */
2504
2505static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2506static const CV *slf_cv;
2507static SV **slf_argv;
2508static int slf_argc, slf_arga; /* count, allocated */
2509static I32 slf_ax; /* top of stack, for restore */
2510
2511/* this restores the stack in the case we patched the entersub, to */
2512/* recreate the stack frame as perl will on following calls */
2513/* since entersub cleared the stack */
2514static OP *
2515pp_restore (pTHX)
2516{
2517 int i;
2518 SV **SP = PL_stack_base + slf_ax;
2519
2520 PUSHMARK (SP);
2521
2522 EXTEND (SP, slf_argc + 1);
2523
2524 for (i = 0; i < slf_argc; ++i)
2525 PUSHs (sv_2mortal (slf_argv [i]));
2526
2527 PUSHs ((SV *)CvGV (slf_cv));
2528
2529 RETURNOP (slf_restore.op_first);
2530}
2531
2532static void
2533slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2534{
2535 SV **arg = (SV **)slf_frame.data;
2536
2537 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2538}
2539
2540static void
2541slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2542{
2543 if (items != 2)
2544 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2545
2546 frame->prepare = slf_prepare_transfer;
2547 frame->check = slf_check_nop;
2548 frame->data = (void *)arg; /* let's hope it will stay valid */
2549}
2550
2551static void
2552slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2553{
2554 frame->prepare = prepare_schedule;
2555 frame->check = slf_check_nop;
2556}
2557
2558static void
2559slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2560{
2561 struct coro *next = (struct coro *)slf_frame.data;
2562
2563 SvREFCNT_inc_NN (next->hv);
2564 prepare_schedule_to (aTHX_ ta, next);
2565}
2566
2567static void
2568slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2569{
2570 if (!items)
2571 croak ("Coro::schedule_to expects a coroutine argument, caught");
2572
2573 frame->data = (void *)SvSTATE (arg [0]);
2574 frame->prepare = slf_prepare_schedule_to;
2575 frame->check = slf_check_nop;
2576}
2577
2578static void
2579slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2580{
2581 api_ready (aTHX_ SvRV (coro_current));
2582
2583 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2584}
2585
2586static void
2587slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2588{
2589 frame->prepare = prepare_cede;
2590 frame->check = slf_check_nop;
2591}
2592
2593static void
2594slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2595{
2596 frame->prepare = prepare_cede_notself;
2597 frame->check = slf_check_nop;
2598}
2599
2600/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2601static void
2602slf_destroy (pTHX_ struct coro *coro)
2603{
2604 /* this callback is reserved for slf functions needing to do cleanup */
2605 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2606 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2607
2608 /*
2609 * The on_destroy above most likely is from an SLF call.
2610 * Since by definition the SLF call will not finish when we destroy
2611 * the coro, we will have to force-finish it here, otherwise
2612 * cleanup functions cannot call SLF functions.
2613 */
2614 coro->slf_frame.prepare = 0;
2615}
2616
2617/*
2618 * these not obviously related functions are all rolled into one
2619 * function to increase chances that they all will call transfer with the same
2620 * stack offset
2621 * SLF stands for "schedule-like-function".
2622 */
2623static OP *
2624pp_slf (pTHX)
2625{
2626 I32 checkmark; /* mark SP to see how many elements check has pushed */
2627
2628 /* set up the slf frame, unless it has already been set-up */
2629 /* the latter happens when a new coro has been started */
2630 /* or when a new cctx was attached to an existing coroutine */
2631 if (ecb_expect_true (!slf_frame.prepare))
2632 {
2633 /* first iteration */
2634 dSP;
2635 SV **arg = PL_stack_base + TOPMARK + 1;
2636 int items = SP - arg; /* args without function object */
2637 SV *gv = *sp;
2638
2639 /* do a quick consistency check on the "function" object, and if it isn't */
2640 /* for us, divert to the real entersub */
2641 if (SvTYPE (gv) != SVt_PVGV
2642 || !GvCV (gv)
2643 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2644 return PL_ppaddr[OP_ENTERSUB](aTHX);
2645
2646 if (!(PL_op->op_flags & OPf_STACKED))
2647 {
2648 /* ampersand-form of call, use @_ instead of stack */
2649 AV *av = GvAV (PL_defgv);
2650 arg = AvARRAY (av);
2651 items = AvFILLp (av) + 1;
2652 }
2653
2654 /* now call the init function, which needs to set up slf_frame */
2655 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2656 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2657
2658 /* pop args */
2659 SP = PL_stack_base + POPMARK;
2660
2661 PUTBACK;
2662 }
2663
2664 /* now that we have a slf_frame, interpret it! */
2665 /* we use a callback system not to make the code needlessly */
2666 /* complicated, but so we can run multiple perl coros from one cctx */
2667
2668 do
2669 {
2670 struct coro_transfer_args ta;
2671
2672 slf_frame.prepare (aTHX_ &ta);
2673 TRANSFER (ta, 0);
2674
2675 checkmark = PL_stack_sp - PL_stack_base;
2676 }
2677 while (slf_frame.check (aTHX_ &slf_frame));
2678
2679 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2680
2681 /* exception handling */
2682 if (ecb_expect_false (CORO_THROW))
2683 {
2684 SV *exception = sv_2mortal (CORO_THROW);
2685
2686 CORO_THROW = 0;
2687 sv_setsv (ERRSV, exception);
2688 croak (0);
2689 }
2690
2691 /* return value handling - mostly like entersub */
2692 /* make sure we put something on the stack in scalar context */
2693 if (GIMME_V == G_SCALAR
2694 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2695 {
2696 dSP;
2697 SV **bot = PL_stack_base + checkmark;
2698
2699 if (sp == bot) /* too few, push undef */
2700 bot [1] = &PL_sv_undef;
2701 else /* too many, take last one */
2702 bot [1] = *sp;
2703
2704 SP = bot + 1;
2705
2706 PUTBACK;
2707 }
2708
2709 return NORMAL;
2710}
2711
2712static void
2713api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2714{
2715 int i;
2716 SV **arg = PL_stack_base + ax;
2717 int items = PL_stack_sp - arg + 1;
2718
2719 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2720
2721 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2722 && PL_op->op_ppaddr != pp_slf)
2723 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2724
2725 CvFLAGS (cv) |= CVf_SLF;
2726 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2727 slf_cv = cv;
2728
2729 /* we patch the op, and then re-run the whole call */
2730 /* we have to put the same argument on the stack for this to work */
2731 /* and this will be done by pp_restore */
2732 slf_restore.op_next = (OP *)&slf_restore;
2733 slf_restore.op_type = OP_CUSTOM;
2734 slf_restore.op_ppaddr = pp_restore;
2735 slf_restore.op_first = PL_op;
2736
2737 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2738
2739 if (PL_op->op_flags & OPf_STACKED)
2740 {
2741 if (items > slf_arga)
2742 {
2743 slf_arga = items;
2744 Safefree (slf_argv);
2745 New (0, slf_argv, slf_arga, SV *);
2746 }
2747
2748 slf_argc = items;
2749
2750 for (i = 0; i < items; ++i)
2751 slf_argv [i] = SvREFCNT_inc (arg [i]);
2752 }
2753 else
2754 slf_argc = 0;
2755
2756 PL_op->op_ppaddr = pp_slf;
2757 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2758
2759 PL_op = (OP *)&slf_restore;
2760}
2761
2762/*****************************************************************************/
2763/* dynamic wind */
2764
2765static void
2766on_enterleave_call (pTHX_ SV *cb)
2767{
2768 dSP;
2769
2770 PUSHSTACK;
2771
2772 PUSHMARK (SP);
2773 PUTBACK;
2774 call_sv (cb, G_VOID | G_DISCARD);
2775 SPAGAIN;
2776
2777 POPSTACK;
2778}
2779
2780static SV *
2781coro_avp_pop_and_free (pTHX_ AV **avp)
2782{
2783 AV *av = *avp;
2784 SV *res = av_pop (av);
2785
2786 if (AvFILLp (av) < 0)
2787 {
2788 *avp = 0;
2789 SvREFCNT_dec (av);
2790 }
2791
2792 return res;
2793}
2794
2795static void
2796coro_pop_on_enter (pTHX_ void *coro)
2797{
2798 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2799 SvREFCNT_dec (cb);
2800}
2801
2802static void
2803coro_pop_on_leave (pTHX_ void *coro)
2804{
2805 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2806 on_enterleave_call (aTHX_ sv_2mortal (cb));
2807}
1760 2808
1761/*****************************************************************************/ 2809/*****************************************************************************/
1762/* PerlIO::cede */ 2810/* PerlIO::cede */
1763 2811
1764typedef struct 2812typedef struct
1765{ 2813{
1766 PerlIOBuf base; 2814 PerlIOBuf base;
1767 NV next, every; 2815 NV next, every;
1768} PerlIOCede; 2816} PerlIOCede;
1769 2817
1770static IV 2818static IV ecb_cold
1771PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2819PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1772{ 2820{
1773 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2821 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1774 2822
1775 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2823 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1776 self->next = nvtime () + self->every; 2824 self->next = nvtime () + self->every;
1777 2825
1778 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2826 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1779} 2827}
1780 2828
1781static SV * 2829static SV * ecb_cold
1782PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2830PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1783{ 2831{
1784 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2832 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1785 2833
1786 return newSVnv (self->every); 2834 return newSVnv (self->every);
… …
1792 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2840 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1793 double now = nvtime (); 2841 double now = nvtime ();
1794 2842
1795 if (now >= self->next) 2843 if (now >= self->next)
1796 { 2844 {
1797 api_cede (); 2845 api_cede (aTHX);
1798 self->next = now + self->every; 2846 self->next = now + self->every;
1799 } 2847 }
1800 2848
1801 return PerlIOBuf_flush (aTHX_ f); 2849 return PerlIOBuf_flush (aTHX_ f);
1802} 2850}
… …
1832 PerlIOBuf_get_cnt, 2880 PerlIOBuf_get_cnt,
1833 PerlIOBuf_set_ptrcnt, 2881 PerlIOBuf_set_ptrcnt,
1834}; 2882};
1835 2883
1836/*****************************************************************************/ 2884/*****************************************************************************/
2885/* Coro::Semaphore & Coro::Signal */
1837 2886
1838static const CV *ssl_cv; /* for quick consistency check */
1839
1840static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1841static SV *ssl_arg0;
1842static SV *ssl_arg1;
1843
1844/* this restores the stack in the case we patched the entersub, to */
1845/* recreate the stack frame as perl will on following calls */
1846/* since entersub cleared the stack */
1847static OP * 2887static SV *
1848pp_restore (pTHX) 2888coro_waitarray_new (pTHX_ int count)
2889{
2890 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2891 AV *av = newAV ();
2892 SV **ary;
2893
2894 /* unfortunately, building manually saves memory */
2895 Newx (ary, 2, SV *);
2896 AvALLOC (av) = ary;
2897#if PERL_VERSION_ATLEAST (5,10,0)
2898 AvARRAY (av) = ary;
2899#else
2900 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2901 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2902 SvPVX ((SV *)av) = (char *)ary;
2903#endif
2904 AvMAX (av) = 1;
2905 AvFILLp (av) = 0;
2906 ary [0] = newSViv (count);
2907
2908 return newRV_noinc ((SV *)av);
2909}
2910
2911/* semaphore */
2912
2913static void
2914coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2915{
2916 SV *count_sv = AvARRAY (av)[0];
2917 IV count = SvIVX (count_sv);
2918
2919 count += adjust;
2920 SvIVX (count_sv) = count;
2921
2922 /* now wake up as many waiters as are expected to lock */
2923 while (count > 0 && AvFILLp (av) > 0)
2924 {
2925 SV *cb;
2926
2927 /* swap first two elements so we can shift a waiter */
2928 AvARRAY (av)[0] = AvARRAY (av)[1];
2929 AvARRAY (av)[1] = count_sv;
2930 cb = av_shift (av);
2931
2932 if (SvOBJECT (cb))
2933 {
2934 api_ready (aTHX_ cb);
2935 --count;
2936 }
2937 else if (SvTYPE (cb) == SVt_PVCV)
2938 {
2939 dSP;
2940 PUSHMARK (SP);
2941 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2942 PUTBACK;
2943 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2944 }
2945
2946 SvREFCNT_dec (cb);
2947 }
2948}
2949
2950static void
2951coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2952{
2953 /* call $sem->adjust (0) to possibly wake up some other waiters */
2954 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2955}
2956
2957static int
2958slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2959{
2960 AV *av = (AV *)frame->data;
2961 SV *count_sv = AvARRAY (av)[0];
2962 SV *coro_hv = SvRV (coro_current);
2963
2964 /* if we are about to throw, don't actually acquire the lock, just throw */
2965 if (CORO_THROW)
2966 return 0;
2967 else if (SvIVX (count_sv) > 0)
2968 {
2969 frame->destroy = 0;
2970
2971 if (acquire)
2972 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2973 else
2974 coro_semaphore_adjust (aTHX_ av, 0);
2975
2976 return 0;
2977 }
2978 else
2979 {
2980 int i;
2981 /* if we were woken up but can't down, we look through the whole */
2982 /* waiters list and only add us if we aren't in there already */
2983 /* this avoids some degenerate memory usage cases */
2984 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2985 if (AvARRAY (av)[i] == coro_hv)
2986 return 1;
2987
2988 av_push (av, SvREFCNT_inc (coro_hv));
2989 return 1;
2990 }
2991}
2992
2993static int
2994slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2995{
2996 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2997}
2998
2999static int
3000slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3001{
3002 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3003}
3004
3005static void
3006slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3007{
3008 AV *av = (AV *)SvRV (arg [0]);
3009
3010 if (SvIVX (AvARRAY (av)[0]) > 0)
3011 {
3012 frame->data = (void *)av;
3013 frame->prepare = prepare_nop;
3014 }
3015 else
3016 {
3017 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
3018
3019 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
3020 frame->prepare = prepare_schedule;
3021 /* to avoid race conditions when a woken-up coro gets terminated */
3022 /* we arrange for a temporary on_destroy that calls adjust (0) */
3023 frame->destroy = coro_semaphore_destroy;
3024 }
3025}
3026
3027static void
3028slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3029{
3030 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3031 frame->check = slf_check_semaphore_down;
3032}
3033
3034static void
3035slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3036{
3037 if (items >= 2)
3038 {
3039 /* callback form */
3040 AV *av = (AV *)SvRV (arg [0]);
3041 SV *cb_cv = s_get_cv_croak (arg [1]);
3042
3043 av_push (av, SvREFCNT_inc_NN (cb_cv));
3044
3045 if (SvIVX (AvARRAY (av)[0]) > 0)
3046 coro_semaphore_adjust (aTHX_ av, 0);
3047
3048 frame->prepare = prepare_nop;
3049 frame->check = slf_check_nop;
3050 }
3051 else
3052 {
3053 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3054 frame->check = slf_check_semaphore_wait;
3055 }
3056}
3057
3058/* signal */
3059
3060static void
3061coro_signal_wake (pTHX_ AV *av, int count)
3062{
3063 SvIVX (AvARRAY (av)[0]) = 0;
3064
3065 /* now signal count waiters */
3066 while (count > 0 && AvFILLp (av) > 0)
3067 {
3068 SV *cb;
3069
3070 /* swap first two elements so we can shift a waiter */
3071 cb = AvARRAY (av)[0];
3072 AvARRAY (av)[0] = AvARRAY (av)[1];
3073 AvARRAY (av)[1] = cb;
3074
3075 cb = av_shift (av);
3076
3077 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 }
3085 else
3086 {
3087 api_ready (aTHX_ cb);
3088 sv_setiv (cb, 0); /* signal waiter */
3089 }
3090
3091 SvREFCNT_dec (cb);
3092
3093 --count;
3094 }
3095}
3096
3097static int
3098slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3099{
3100 /* if we are about to throw, also stop waiting */
3101 return SvROK ((SV *)frame->data) && !CORO_THROW;
3102}
3103
3104static void
3105slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3106{
3107 AV *av = (AV *)SvRV (arg [0]);
3108
3109 if (items >= 2)
3110 {
3111 SV *cb_cv = s_get_cv_croak (arg [1]);
3112 av_push (av, SvREFCNT_inc_NN (cb_cv));
3113
3114 if (SvIVX (AvARRAY (av)[0]))
3115 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3116
3117 frame->prepare = prepare_nop;
3118 frame->check = slf_check_nop;
3119 }
3120 else if (SvIVX (AvARRAY (av)[0]))
3121 {
3122 SvIVX (AvARRAY (av)[0]) = 0;
3123 frame->prepare = prepare_nop;
3124 frame->check = slf_check_nop;
3125 }
3126 else
3127 {
3128 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3129
3130 av_push (av, waiter);
3131
3132 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3133 frame->prepare = prepare_schedule;
3134 frame->check = slf_check_signal_wait;
3135 }
3136}
3137
3138/*****************************************************************************/
3139/* Coro::AIO */
3140
3141#define CORO_MAGIC_type_aio PERL_MAGIC_ext
3142
3143/* helper storage struct */
3144struct io_state
3145{
3146 int errorno;
3147 I32 laststype; /* U16 in 5.10.0 */
3148 int laststatval;
3149 Stat_t statcache;
3150};
3151
3152static void
3153coro_aio_callback (pTHX_ CV *cv)
3154{
3155 dXSARGS;
3156 AV *state = (AV *)S_GENSUB_ARG;
3157 SV *coro = av_pop (state);
3158 SV *data_sv = newSV (sizeof (struct io_state));
3159
3160 av_extend (state, items - 1);
3161
3162 sv_upgrade (data_sv, SVt_PV);
3163 SvCUR_set (data_sv, sizeof (struct io_state));
3164 SvPOK_only (data_sv);
3165
3166 {
3167 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3168
3169 data->errorno = errno;
3170 data->laststype = PL_laststype;
3171 data->laststatval = PL_laststatval;
3172 data->statcache = PL_statcache;
3173 }
3174
3175 /* now build the result vector out of all the parameters and the data_sv */
3176 {
3177 int i;
3178
3179 for (i = 0; i < items; ++i)
3180 av_push (state, SvREFCNT_inc_NN (ST (i)));
3181 }
3182
3183 av_push (state, data_sv);
3184
3185 api_ready (aTHX_ coro);
3186 SvREFCNT_dec (coro);
3187 SvREFCNT_dec ((AV *)state);
3188}
3189
3190static int
3191slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3192{
3193 AV *state = (AV *)frame->data;
3194
3195 /* if we are about to throw, return early */
3196 /* this does not cancel the aio request, but at least */
3197 /* it quickly returns */
3198 if (CORO_THROW)
3199 return 0;
3200
3201 /* one element that is an RV? repeat! */
3202 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3203 return 1;
3204
3205 /* restore status */
3206 {
3207 SV *data_sv = av_pop (state);
3208 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3209
3210 errno = data->errorno;
3211 PL_laststype = data->laststype;
3212 PL_laststatval = data->laststatval;
3213 PL_statcache = data->statcache;
3214
3215 SvREFCNT_dec (data_sv);
3216 }
3217
3218 /* push result values */
3219 {
3220 dSP;
3221 int i;
3222
3223 EXTEND (SP, AvFILLp (state) + 1);
3224 for (i = 0; i <= AvFILLp (state); ++i)
3225 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3226
3227 PUTBACK;
3228 }
3229
3230 return 0;
3231}
3232
3233static void
3234slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3235{
3236 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3237 SV *coro_hv = SvRV (coro_current);
3238 struct coro *coro = SvSTATE_hv (coro_hv);
3239
3240 /* put our coroutine id on the state arg */
3241 av_push (state, SvREFCNT_inc_NN (coro_hv));
3242
3243 /* first see whether we have a non-zero priority and set it as AIO prio */
3244 if (coro->prio)
3245 {
3246 dSP;
3247
3248 static SV *prio_cv;
3249 static SV *prio_sv;
3250
3251 if (ecb_expect_false (!prio_cv))
3252 {
3253 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3254 prio_sv = newSViv (0);
3255 }
3256
3257 PUSHMARK (SP);
3258 sv_setiv (prio_sv, coro->prio);
3259 XPUSHs (prio_sv);
3260
3261 PUTBACK;
3262 call_sv (prio_cv, G_VOID | G_DISCARD);
3263 }
3264
3265 /* now call the original request */
3266 {
3267 dSP;
3268 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3269 int i;
3270
3271 PUSHMARK (SP);
3272
3273 /* first push all args to the stack */
3274 EXTEND (SP, items + 1);
3275
3276 for (i = 0; i < items; ++i)
3277 PUSHs (arg [i]);
3278
3279 /* now push the callback closure */
3280 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3281
3282 /* now call the AIO function - we assume our request is uncancelable */
3283 PUTBACK;
3284 call_sv ((SV *)req, G_VOID | G_DISCARD);
3285 }
3286
3287 /* now that the request is going, we loop till we have a result */
3288 frame->data = (void *)state;
3289 frame->prepare = prepare_schedule;
3290 frame->check = slf_check_aio_req;
3291}
3292
3293static void
3294coro_aio_req_xs (pTHX_ CV *cv)
3295{
3296 dXSARGS;
3297
3298 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3299
3300 XSRETURN_EMPTY;
3301}
3302
3303/*****************************************************************************/
3304
3305#if CORO_CLONE
3306# include "clone.c"
3307#endif
3308
3309/*****************************************************************************/
3310
3311static SV *
3312coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3313{
3314 SV *coro_sv;
3315 struct coro *coro;
3316 MAGIC *mg;
3317 HV *hv;
3318 SV *cb;
3319 int i;
3320
3321 if (argc > 0)
3322 {
3323 cb = s_get_cv_croak (argv [0]);
3324
3325 if (!is_coro)
3326 {
3327 if (CvISXSUB (cb))
3328 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3329
3330 if (!CvROOT (cb))
3331 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3332 }
3333 }
3334
3335 Newz (0, coro, 1, struct coro);
3336 coro->args = newAV ();
3337 coro->flags = CF_NEW;
3338
3339 if (coro_first) coro_first->prev = coro;
3340 coro->next = coro_first;
3341 coro_first = coro;
3342
3343 coro->hv = hv = newHV ();
3344 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3345 mg->mg_flags |= MGf_DUP;
3346 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3347
3348 if (argc > 0)
3349 {
3350 av_extend (coro->args, argc + is_coro - 1);
3351
3352 if (is_coro)
3353 {
3354 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3355 cb = (SV *)cv_coro_run;
3356 }
3357
3358 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3359
3360 for (i = 1; i < argc; i++)
3361 av_push (coro->args, newSVsv (argv [i]));
3362 }
3363
3364 return coro_sv;
3365}
3366
3367#ifndef __cplusplus
3368ecb_cold XS(boot_Coro__State);
3369#endif
3370
3371#if CORO_JIT
3372
3373static void ecb_noinline ecb_cold
3374pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
1849{ 3375{
1850 dSP; 3376 dSP;
3377 AV *av = newAV ();
3378
3379 av_store (av, 3, newSVuv (d));
3380 av_store (av, 2, newSVuv (c));
3381 av_store (av, 1, newSVuv (b));
3382 av_store (av, 0, newSVuv (a));
3383
3384 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3385
3386 PUTBACK;
3387}
3388
3389static void ecb_noinline ecb_cold
3390jit_init (pTHX)
3391{
3392 dSP;
3393 SV *load, *save;
3394 char *map_base;
3395 char *load_ptr, *save_ptr;
3396 STRLEN load_len, save_len, map_len;
3397 int count;
3398
3399 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
1851 3400
1852 PUSHMARK (SP); 3401 PUSHMARK (SP);
3402 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3403 #include "state.h"
3404 count = call_pv ("Coro::State::_jit", G_ARRAY);
3405 SPAGAIN;
1853 3406
1854 EXTEND (SP, 3); 3407 save = POPs; save_ptr = SvPVbyte (save, save_len);
1855 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 3408 load = POPs; load_ptr = SvPVbyte (load, load_len);
1856 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1857 PUSHs ((SV *)CvGV (ssl_cv));
1858 3409
1859 RETURNOP (ssl_restore.op_first); 3410 map_len = load_len + save_len + 16;
1860}
1861 3411
1862#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */ 3412 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1863 3413
1864/* declare prototype */ 3414 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
1865XS(XS_Coro__State__set_stacklevel);
1866 3415
1867/* 3416 load_perl_slots = (load_save_perl_slots_type)map_base;
1868 * these not obviously related functions are all rolled into one 3417 memcpy (map_base, load_ptr, load_len);
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 */
1872static OP *
1873pp_set_stacklevel (pTHX)
1874{
1875 dSP;
1876 struct transfer_args ta;
1877 SV **arg = PL_stack_base + TOPMARK + 1;
1878 int items = SP - arg; /* args without function object */
1879 3418
1880 /* do a quick consistency check on the "function" object, and if it isn't */ 3419 map_base += (load_len + 15) & ~15;
1881 /* for us, divert to the real entersub */
1882 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1883 return PL_ppaddr[OP_ENTERSUB](aTHX);
1884 3420
1885 /* pop args */ 3421 save_perl_slots = (load_save_perl_slots_type)map_base;
1886 SP = PL_stack_base + POPMARK; 3422 memcpy (map_base, save_ptr, save_len);
1887 3423
1888 if (!(PL_op->op_flags & OPf_STACKED)) 3424 /* we are good citizens and try to make the page read-only, so the evil evil */
1889 { 3425 /* hackers might have it a bit more difficult */
1890 /* ampersand-form of call, use @_ instead of stack */ 3426 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
1891 AV *av = GvAV (PL_defgv);
1892 arg = AvARRAY (av);
1893 items = AvFILLp (av) + 1;
1894 }
1895 3427
1896 PUTBACK; 3428 PUTBACK;
1897 switch (PL_op->op_private & OPpENTERSUB_SSL) 3429 eval_pv ("undef &Coro::State::_jit", 1);
1898 {
1899 case 0:
1900 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1901 break;
1902
1903 case 1:
1904 if (items != 2)
1905 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1906
1907 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1908 break;
1909
1910 case 2:
1911 prepare_schedule (aTHX_ &ta);
1912 break;
1913
1914 case 3:
1915 prepare_cede (aTHX_ &ta);
1916 break;
1917
1918 case 4:
1919 prepare_cede_notself (aTHX_ &ta);
1920 break;
1921 }
1922
1923 TRANSFER (ta, 0);
1924 SPAGAIN;
1925
1926skip:
1927 PUTBACK;
1928 SSL_TAIL;
1929 SPAGAIN;
1930 RETURN;
1931} 3430}
1932 3431
1933static void 3432#endif
1934coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items)
1935{
1936 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1937
1938 assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
1939 ssl_cv = cv;
1940
1941 /* we patch the op, and then re-run the whole call */
1942 /* we have to put some dummy argument on the stack for this to work */
1943 ssl_restore.op_next = (OP *)&ssl_restore;
1944 ssl_restore.op_type = OP_NULL;
1945 ssl_restore.op_ppaddr = pp_restore;
1946 ssl_restore.op_first = PL_op;
1947
1948 ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1949 ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1950
1951 PL_op->op_ppaddr = pp_set_stacklevel;
1952 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1953
1954 PL_op = (OP *)&ssl_restore;
1955}
1956 3433
1957MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3434MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1958 3435
1959PROTOTYPES: DISABLE 3436PROTOTYPES: DISABLE
1960 3437
1961BOOT: 3438BOOT:
1962{ 3439{
1963#ifdef USE_ITHREADS 3440#ifdef USE_ITHREADS
1964 MUTEX_INIT (&coro_lock);
1965# if CORO_PTHREAD 3441# if CORO_PTHREAD
1966 coro_thx = PERL_GET_CONTEXT; 3442 coro_thx = PERL_GET_CONTEXT;
1967# endif 3443# endif
1968#endif 3444#endif
1969 BOOT_PAGESIZE; 3445 /* perl defines these to check for existance first, but why it doesn't */
3446 /* just create them one at init time is not clear to me, except for */
3447 /* programs trying to delete them, but... */
3448 /* anyway, we declare this as invalid and make sure they are initialised here */
3449 DEFSV;
3450 ERRSV;
3451
3452 cctx_current = cctx_new_empty ();
1970 3453
1971 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3454 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1972 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3455 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1973 3456
1974 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3457 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1990 main_top_env = PL_top_env; 3473 main_top_env = PL_top_env;
1991 3474
1992 while (main_top_env->je_prev) 3475 while (main_top_env->je_prev)
1993 main_top_env = main_top_env->je_prev; 3476 main_top_env = main_top_env->je_prev;
1994 3477
1995 coroapi.ver = CORO_API_VERSION;
1996 coroapi.rev = CORO_API_REVISION;
1997 coroapi.transfer = api_transfer;
1998
1999 { 3478 {
2000 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3479 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2001 3480
2002 if (!svp) croak ("Time::HiRes is required"); 3481 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2003 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3482 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2004 3483
2005 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3484 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3485 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2006 } 3486 }
2007 3487
3488 coroapi.ver = CORO_API_VERSION;
3489 coroapi.rev = CORO_API_REVISION;
3490
3491 coroapi.transfer = api_transfer;
3492
3493 coroapi.sv_state = SvSTATE_;
3494 coroapi.execute_slf = api_execute_slf;
3495 coroapi.prepare_nop = prepare_nop;
3496 coroapi.prepare_schedule = prepare_schedule;
3497 coroapi.prepare_cede = prepare_cede;
3498 coroapi.prepare_cede_notself = prepare_cede_notself;
3499
3500 time_init (aTHX);
3501
2008 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3502 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3503#if CORO_JIT
3504 PUTBACK;
3505 jit_init (aTHX);
3506 SPAGAIN;
3507#endif
2009} 3508}
2010 3509
2011SV * 3510SV *
2012new (char *klass, ...) 3511new (SV *klass, ...)
3512 ALIAS:
3513 Coro::new = 1
2013 CODE: 3514 CODE:
2014{ 3515 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2015 struct coro *coro;
2016 MAGIC *mg;
2017 HV *hv;
2018 int i;
2019
2020 Newz (0, coro, 1, struct coro);
2021 coro->args = newAV ();
2022 coro->flags = CF_NEW;
2023
2024 if (coro_first) coro_first->prev = coro;
2025 coro->next = coro_first;
2026 coro_first = coro;
2027
2028 coro->hv = hv = newHV ();
2029 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2030 mg->mg_flags |= MGf_DUP;
2031 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2032
2033 av_extend (coro->args, items - 1);
2034 for (i = 1; i < items; i++)
2035 av_push (coro->args, newSVsv (ST (i)));
2036}
2037 OUTPUT:
2038 RETVAL
2039
2040void
2041_set_stacklevel (...)
2042 ALIAS:
2043 Coro::State::transfer = 1
2044 Coro::schedule = 2
2045 Coro::cede = 3
2046 Coro::cede_notself = 4
2047 CODE:
2048 coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
2049
2050bool
2051_destroy (SV *coro_sv)
2052 CODE:
2053 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2054 OUTPUT: 3516 OUTPUT:
2055 RETVAL 3517 RETVAL
2056 3518
2057void 3519void
2058_exit (int code) 3520transfer (...)
2059 PROTOTYPE: $ 3521 PROTOTYPE: $$
2060 CODE: 3522 CODE:
2061 _exit (code); 3523 CORO_EXECUTE_SLF_XS (slf_init_transfer);
3524
3525SV *
3526clone (Coro::State coro)
3527 CODE:
3528{
3529#if CORO_CLONE
3530 struct coro *ncoro = coro_clone (aTHX_ coro);
3531 MAGIC *mg;
3532 /* TODO: too much duplication */
3533 ncoro->hv = newHV ();
3534 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3535 mg->mg_flags |= MGf_DUP;
3536 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3537#else
3538 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3539#endif
3540}
3541 OUTPUT:
3542 RETVAL
2062 3543
2063int 3544int
2064cctx_stacksize (int new_stacksize = 0) 3545cctx_stacksize (int new_stacksize = 0)
3546 PROTOTYPE: ;$
2065 CODE: 3547 CODE:
2066 RETVAL = cctx_stacksize; 3548 RETVAL = cctx_stacksize;
2067 if (new_stacksize) 3549 if (new_stacksize)
2068 { 3550 {
2069 cctx_stacksize = new_stacksize; 3551 cctx_stacksize = new_stacksize;
… …
2072 OUTPUT: 3554 OUTPUT:
2073 RETVAL 3555 RETVAL
2074 3556
2075int 3557int
2076cctx_max_idle (int max_idle = 0) 3558cctx_max_idle (int max_idle = 0)
3559 PROTOTYPE: ;$
2077 CODE: 3560 CODE:
2078 RETVAL = cctx_max_idle; 3561 RETVAL = cctx_max_idle;
2079 if (max_idle > 1) 3562 if (max_idle > 1)
2080 cctx_max_idle = max_idle; 3563 cctx_max_idle = max_idle;
2081 OUTPUT: 3564 OUTPUT:
2082 RETVAL 3565 RETVAL
2083 3566
2084int 3567int
2085cctx_count () 3568cctx_count ()
3569 PROTOTYPE:
2086 CODE: 3570 CODE:
2087 RETVAL = cctx_count; 3571 RETVAL = cctx_count;
2088 OUTPUT: 3572 OUTPUT:
2089 RETVAL 3573 RETVAL
2090 3574
2091int 3575int
2092cctx_idle () 3576cctx_idle ()
3577 PROTOTYPE:
2093 CODE: 3578 CODE:
2094 RETVAL = cctx_idle; 3579 RETVAL = cctx_idle;
2095 OUTPUT: 3580 OUTPUT:
2096 RETVAL 3581 RETVAL
2097 3582
2098void 3583void
2099list () 3584list ()
3585 PROTOTYPE:
2100 PPCODE: 3586 PPCODE:
2101{ 3587{
2102 struct coro *coro; 3588 struct coro *coro;
2103 for (coro = coro_first; coro; coro = coro->next) 3589 for (coro = coro_first; coro; coro = coro->next)
2104 if (coro->hv) 3590 if (coro->hv)
2105 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3591 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2106} 3592}
2107 3593
… …
2111 eval = 1 3597 eval = 1
2112 CODE: 3598 CODE:
2113{ 3599{
2114 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3600 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2115 { 3601 {
2116 struct coro temp; 3602 struct coro *current = SvSTATE_current;
3603 struct CoroSLF slf_save;
2117 3604
2118 if (!(coro->flags & CF_RUNNING)) 3605 if (current != coro)
2119 { 3606 {
2120 PUTBACK; 3607 PUTBACK;
2121 save_perl (aTHX_ &temp); 3608 save_perl (aTHX_ current);
2122 load_perl (aTHX_ coro); 3609 load_perl (aTHX_ coro);
3610 /* the coro is most likely in an active SLF call.
3611 * while not strictly required (the code we execute is
3612 * not allowed to call any SLF functions), it's cleaner
3613 * to reinitialise the slf_frame and restore it later.
3614 * This might one day allow us to actually do SLF calls
3615 * from code executed here.
3616 */
3617 slf_save = slf_frame;
3618 slf_frame.prepare = 0;
3619 SPAGAIN;
2123 } 3620 }
2124 3621
2125 {
2126 dSP;
2127 ENTER;
2128 SAVETMPS;
2129 PUTBACK;
2130 PUSHSTACK; 3622 PUSHSTACK;
3623
2131 PUSHMARK (SP); 3624 PUSHMARK (SP);
3625 PUTBACK;
2132 3626
2133 if (ix) 3627 if (ix)
2134 eval_sv (coderef, 0); 3628 eval_sv (coderef, 0);
2135 else 3629 else
2136 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3630 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2137 3631
2138 POPSTACK; 3632 POPSTACK;
2139 SPAGAIN; 3633 SPAGAIN;
2140 FREETMPS;
2141 LEAVE;
2142 PUTBACK;
2143 }
2144 3634
2145 if (!(coro->flags & CF_RUNNING)) 3635 if (current != coro)
2146 { 3636 {
3637 PUTBACK;
3638 slf_frame = slf_save;
2147 save_perl (aTHX_ coro); 3639 save_perl (aTHX_ coro);
2148 load_perl (aTHX_ &temp); 3640 load_perl (aTHX_ current);
2149 SPAGAIN; 3641 SPAGAIN;
2150 } 3642 }
2151 } 3643 }
2152} 3644}
2153 3645
… …
2156 PROTOTYPE: $ 3648 PROTOTYPE: $
2157 ALIAS: 3649 ALIAS:
2158 is_ready = CF_READY 3650 is_ready = CF_READY
2159 is_running = CF_RUNNING 3651 is_running = CF_RUNNING
2160 is_new = CF_NEW 3652 is_new = CF_NEW
2161 is_destroyed = CF_DESTROYED 3653 is_destroyed = CF_ZOMBIE
3654 is_zombie = CF_ZOMBIE
3655 is_suspended = CF_SUSPENDED
2162 CODE: 3656 CODE:
2163 RETVAL = boolSV (coro->flags & ix); 3657 RETVAL = boolSV (coro->flags & ix);
2164 OUTPUT: 3658 OUTPUT:
2165 RETVAL 3659 RETVAL
2166 3660
2167void 3661void
2168throw (Coro::State self, SV *throw = &PL_sv_undef) 3662throw (SV *self, SV *exception = &PL_sv_undef)
2169 PROTOTYPE: $;$ 3663 PROTOTYPE: $;$
2170 CODE: 3664 CODE:
3665{
3666 struct coro *coro = SvSTATE (self);
3667 struct coro *current = SvSTATE_current;
3668 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2171 SvREFCNT_dec (self->throw); 3669 SvREFCNT_dec (*exceptionp);
2172 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3670 SvGETMAGIC (exception);
3671 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3672
3673 api_ready (aTHX_ self);
3674}
2173 3675
2174void 3676void
2175api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3677api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3678 PROTOTYPE: $;$
3679 C_ARGS: aTHX_ coro, flags
2176 3680
2177SV * 3681SV *
2178has_cctx (Coro::State coro) 3682has_cctx (Coro::State coro)
2179 PROTOTYPE: $ 3683 PROTOTYPE: $
2180 CODE: 3684 CODE:
2181 RETVAL = boolSV (!!coro->cctx); 3685 /* maybe manage the running flag differently */
3686 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2182 OUTPUT: 3687 OUTPUT:
2183 RETVAL 3688 RETVAL
2184 3689
2185int 3690int
2186is_traced (Coro::State coro) 3691is_traced (Coro::State coro)
… …
2204 OUTPUT: 3709 OUTPUT:
2205 RETVAL 3710 RETVAL
2206 3711
2207void 3712void
2208force_cctx () 3713force_cctx ()
3714 PROTOTYPE:
2209 CODE: 3715 CODE:
2210 struct coro *coro = SvSTATE (coro_current);
2211 coro->cctx->idle_sp = 0; 3716 cctx_current->idle_sp = 0;
2212 3717
2213void 3718void
2214swap_defsv (Coro::State self) 3719swap_defsv (Coro::State self)
2215 PROTOTYPE: $ 3720 PROTOTYPE: $
2216 ALIAS: 3721 ALIAS:
2217 swap_defav = 1 3722 swap_defav = 1
2218 CODE: 3723 CODE:
2219 if (!self->slot) 3724 if (!self->slot)
2220 croak ("cannot swap state with coroutine that has no saved state"); 3725 croak ("cannot swap state with coroutine that has no saved state,");
2221 else 3726 else
2222 { 3727 {
2223 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3728 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2224 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3729 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2225 3730
2226 SV *tmp = *src; *src = *dst; *dst = tmp; 3731 SV *tmp = *src; *src = *dst; *dst = tmp;
2227 } 3732 }
2228 3733
3734void
3735cancel (Coro::State self)
3736 CODE:
3737 coro_state_destroy (aTHX_ self);
3738
3739SV *
3740enable_times (int enabled = enable_times)
3741 CODE:
3742{
3743 RETVAL = boolSV (enable_times);
3744
3745 if (enabled != enable_times)
3746 {
3747 enable_times = enabled;
3748
3749 coro_times_update ();
3750 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3751 }
3752}
3753 OUTPUT:
3754 RETVAL
3755
3756void
3757times (Coro::State self)
3758 PPCODE:
3759{
3760 struct coro *current = SvSTATE (coro_current);
3761
3762 if (ecb_expect_false (current == self))
3763 {
3764 coro_times_update ();
3765 coro_times_add (SvSTATE (coro_current));
3766 }
3767
3768 EXTEND (SP, 2);
3769 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3770 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3771
3772 if (ecb_expect_false (current == self))
3773 coro_times_sub (SvSTATE (coro_current));
3774}
3775
3776void
3777swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3778 CODE:
3779{
3780 struct coro *current = SvSTATE_current;
3781
3782 if (current == coro)
3783 SWAP_SVS (current);
3784
3785 if (!coro->swap_sv)
3786 coro->swap_sv = newAV ();
3787
3788 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3789 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3790
3791 if (current == coro)
3792 SWAP_SVS (current);
3793}
3794
3795
2229MODULE = Coro::State PACKAGE = Coro 3796MODULE = Coro::State PACKAGE = Coro
2230 3797
2231BOOT: 3798BOOT:
2232{ 3799{
2233 int i;
2234
2235 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2236 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3800 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2237 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3801 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2238 3802 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2239 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3803 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2240 SvREADONLY_on (coro_current); 3804 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3805 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3806 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3807 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3808
3809 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3810 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3811 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3812 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2241 3813
2242 coro_stash = gv_stashpv ("Coro", TRUE); 3814 coro_stash = gv_stashpv ("Coro", TRUE);
2243 3815
2244 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3816 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2245 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3817 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2246 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3818 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2247 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3819 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2248 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3820 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2249 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3821 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2250
2251 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2252 coro_ready[i] = newAV ();
2253 3822
2254 { 3823 {
2255 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3824 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2256 3825
2257 coroapi.schedule = api_schedule; 3826 coroapi.schedule = api_schedule;
3827 coroapi.schedule_to = api_schedule_to;
2258 coroapi.cede = api_cede; 3828 coroapi.cede = api_cede;
2259 coroapi.cede_notself = api_cede_notself; 3829 coroapi.cede_notself = api_cede_notself;
2260 coroapi.ready = api_ready; 3830 coroapi.ready = api_ready;
2261 coroapi.is_ready = api_is_ready; 3831 coroapi.is_ready = api_is_ready;
2262 coroapi.nready = &coro_nready; 3832 coroapi.nready = coro_nready;
2263 coroapi.current = coro_current; 3833 coroapi.current = coro_current;
2264 3834
2265 GCoroAPI = &coroapi; 3835 /*GCoroAPI = &coroapi;*/
2266 sv_setiv (sv, (IV)&coroapi); 3836 sv_setiv (sv, (IV)&coroapi);
2267 SvREADONLY_on (sv); 3837 SvREADONLY_on (sv);
2268 } 3838 }
2269} 3839}
3840
3841SV *
3842async (...)
3843 PROTOTYPE: &@
3844 CODE:
3845 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3846 api_ready (aTHX_ RETVAL);
3847 OUTPUT:
3848 RETVAL
3849
3850void
3851_destroy (Coro::State coro)
3852 CODE:
3853 /* used by the manager thread */
3854 coro_state_destroy (aTHX_ coro);
3855
3856void
3857on_destroy (Coro::State coro, SV *cb)
3858 CODE:
3859 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3860
3861void
3862join (...)
3863 CODE:
3864 CORO_EXECUTE_SLF_XS (slf_init_join);
3865
3866void
3867terminate (...)
3868 CODE:
3869 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3870
3871void
3872cancel (...)
3873 CODE:
3874 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3875
3876int
3877safe_cancel (Coro::State self, ...)
3878 C_ARGS: aTHX_ self, &ST (1), items - 1
3879
3880void
3881schedule (...)
3882 CODE:
3883 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3884
3885void
3886schedule_to (...)
3887 CODE:
3888 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3889
3890void
3891cede_to (...)
3892 CODE:
3893 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3894
3895void
3896cede (...)
3897 CODE:
3898 CORO_EXECUTE_SLF_XS (slf_init_cede);
3899
3900void
3901cede_notself (...)
3902 CODE:
3903 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2270 3904
2271void 3905void
2272_set_current (SV *current) 3906_set_current (SV *current)
2273 PROTOTYPE: $ 3907 PROTOTYPE: $
2274 CODE: 3908 CODE:
… …
2277 3911
2278void 3912void
2279_set_readyhook (SV *hook) 3913_set_readyhook (SV *hook)
2280 PROTOTYPE: $ 3914 PROTOTYPE: $
2281 CODE: 3915 CODE:
2282 LOCK;
2283 SvREFCNT_dec (coro_readyhook); 3916 SvREFCNT_dec (coro_readyhook);
3917 SvGETMAGIC (hook);
3918 if (SvOK (hook))
3919 {
2284 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3920 coro_readyhook = newSVsv (hook);
2285 UNLOCK; 3921 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3922 }
3923 else
3924 {
3925 coro_readyhook = 0;
3926 CORO_READYHOOK = 0;
3927 }
2286 3928
2287int 3929int
2288prio (Coro::State coro, int newprio = 0) 3930prio (Coro::State coro, int newprio = 0)
3931 PROTOTYPE: $;$
2289 ALIAS: 3932 ALIAS:
2290 nice = 1 3933 nice = 1
2291 CODE: 3934 CODE:
2292{ 3935{
2293 RETVAL = coro->prio; 3936 RETVAL = coro->prio;
… …
2295 if (items > 1) 3938 if (items > 1)
2296 { 3939 {
2297 if (ix) 3940 if (ix)
2298 newprio = coro->prio - newprio; 3941 newprio = coro->prio - newprio;
2299 3942
2300 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3943 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2301 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3944 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2302 3945
2303 coro->prio = newprio; 3946 coro->prio = newprio;
2304 } 3947 }
2305} 3948}
2306 OUTPUT: 3949 OUTPUT:
… …
2308 3951
2309SV * 3952SV *
2310ready (SV *self) 3953ready (SV *self)
2311 PROTOTYPE: $ 3954 PROTOTYPE: $
2312 CODE: 3955 CODE:
2313 RETVAL = boolSV (api_ready (self)); 3956 RETVAL = boolSV (api_ready (aTHX_ self));
2314 OUTPUT: 3957 OUTPUT:
2315 RETVAL 3958 RETVAL
2316 3959
2317int 3960int
2318nready (...) 3961nready (...)
… …
2320 CODE: 3963 CODE:
2321 RETVAL = coro_nready; 3964 RETVAL = coro_nready;
2322 OUTPUT: 3965 OUTPUT:
2323 RETVAL 3966 RETVAL
2324 3967
2325# for async_pool speedup
2326void 3968void
2327_pool_1 (SV *cb) 3969suspend (Coro::State self)
3970 PROTOTYPE: $
2328 CODE: 3971 CODE:
2329{ 3972 self->flags |= CF_SUSPENDED;
2330 struct coro *coro = SvSTATE (coro_current);
2331 HV *hv = (HV *)SvRV (coro_current);
2332 AV *defav = GvAV (PL_defgv);
2333 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2334 AV *invoke_av;
2335 int i, len;
2336 3973
2337 if (!invoke) 3974void
3975resume (Coro::State self)
3976 PROTOTYPE: $
3977 CODE:
3978 self->flags &= ~CF_SUSPENDED;
3979
3980void
3981_pool_handler (...)
3982 CODE:
3983 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3984
3985void
3986async_pool (SV *cv, ...)
3987 PROTOTYPE: &@
3988 PPCODE:
3989{
3990 HV *hv = (HV *)av_pop (av_async_pool);
3991 AV *av = newAV ();
3992 SV *cb = ST (0);
3993 int i;
3994
3995 av_extend (av, items - 2);
3996 for (i = 1; i < items; ++i)
3997 av_push (av, SvREFCNT_inc_NN (ST (i)));
3998
3999 if ((SV *)hv == &PL_sv_undef)
2338 { 4000 {
2339 SV *old = PL_diehook; 4001 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2340 PL_diehook = 0; 4002 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2341 SvREFCNT_dec (old); 4003 SvREFCNT_dec (sv);
2342 croak ("\3async_pool terminate\2\n");
2343 } 4004 }
2344 4005
2345 SvREFCNT_dec (coro->saved_deffh);
2346 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2347
2348 hv_store (hv, "desc", sizeof ("desc") - 1,
2349 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2350
2351 invoke_av = (AV *)SvRV (invoke);
2352 len = av_len (invoke_av);
2353
2354 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2355
2356 if (len > 0)
2357 { 4006 {
2358 av_fill (defav, len - 1); 4007 struct coro *coro = SvSTATE_hv (hv);
2359 for (i = 0; i < len; ++i) 4008
2360 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4009 assert (!coro->invoke_cb);
4010 assert (!coro->invoke_av);
4011 coro->invoke_cb = SvREFCNT_inc (cb);
4012 coro->invoke_av = av;
2361 } 4013 }
2362 4014
4015 api_ready (aTHX_ (SV *)hv);
4016
4017 if (GIMME_V != G_VOID)
4018 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4019 else
2363 SvREFCNT_dec (invoke); 4020 SvREFCNT_dec (hv);
2364} 4021}
2365 4022
2366void 4023SV *
2367_pool_2 (SV *cb) 4024rouse_cb ()
4025 PROTOTYPE:
2368 CODE: 4026 CODE:
2369{ 4027 RETVAL = coro_new_rouse_cb (aTHX);
2370 struct coro *coro = SvSTATE (coro_current);
2371
2372 sv_setsv (cb, &PL_sv_undef);
2373
2374 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2375 coro->saved_deffh = 0;
2376
2377 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2378 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2379 {
2380 SV *old = PL_diehook;
2381 PL_diehook = 0;
2382 SvREFCNT_dec (old);
2383 croak ("\3async_pool terminate\2\n");
2384 }
2385
2386 av_clear (GvAV (PL_defgv));
2387 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2388 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2389
2390 coro->prio = 0;
2391
2392 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2393 api_trace (coro_current, 0);
2394
2395 av_push (av_async_pool, newSVsv (coro_current));
2396}
2397
2398#if 0
2399
2400void
2401_generator_call (...)
2402 PROTOTYPE: @
2403 PPCODE:
2404 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2405 xxxx
2406 abort ();
2407
2408SV *
2409gensub (SV *sub, ...)
2410 PROTOTYPE: &;@
2411 CODE:
2412{
2413 struct coro *coro;
2414 MAGIC *mg;
2415 CV *xcv;
2416 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2417 int i;
2418
2419 CvGV (ncv) = CvGV (cv);
2420 CvFILE (ncv) = CvFILE (cv);
2421
2422 Newz (0, coro, 1, struct coro);
2423 coro->args = newAV ();
2424 coro->flags = CF_NEW;
2425
2426 av_extend (coro->args, items - 1);
2427 for (i = 1; i < items; i++)
2428 av_push (coro->args, newSVsv (ST (i)));
2429
2430 CvISXSUB_on (ncv);
2431 CvXSUBANY (ncv).any_ptr = (void *)coro;
2432
2433 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2434
2435 CvXSUB (ncv) = CvXSUB (xcv);
2436 CvANON_on (ncv);
2437
2438 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2439 RETVAL = newRV_noinc ((SV *)ncv);
2440}
2441 OUTPUT: 4028 OUTPUT:
2442 RETVAL 4029 RETVAL
2443 4030
2444#endif
2445
2446
2447MODULE = Coro::State PACKAGE = Coro::AIO
2448
2449void 4031void
2450_get_state (SV *self) 4032rouse_wait (...)
4033 PROTOTYPE: ;$
2451 PPCODE: 4034 PPCODE:
2452{ 4035 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2453 AV *defav = GvAV (PL_defgv);
2454 AV *av = newAV ();
2455 int i;
2456 SV *data_sv = newSV (sizeof (struct io_state));
2457 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2458 SvCUR_set (data_sv, sizeof (struct io_state));
2459 SvPOK_only (data_sv);
2460
2461 data->errorno = errno;
2462 data->laststype = PL_laststype;
2463 data->laststatval = PL_laststatval;
2464 data->statcache = PL_statcache;
2465
2466 av_extend (av, AvFILLp (defav) + 1 + 1);
2467
2468 for (i = 0; i <= AvFILLp (defav); ++i)
2469 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2470
2471 av_push (av, data_sv);
2472
2473 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2474
2475 api_ready (self);
2476}
2477 4036
2478void 4037void
2479_set_state (SV *state) 4038on_enter (SV *block)
4039 ALIAS:
4040 on_leave = 1
2480 PROTOTYPE: $ 4041 PROTOTYPE: &
4042 CODE:
4043{
4044 struct coro *coro = SvSTATE_current;
4045 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4046
4047 block = s_get_cv_croak (block);
4048
4049 if (!*avp)
4050 *avp = newAV ();
4051
4052 av_push (*avp, SvREFCNT_inc (block));
4053
4054 if (!ix)
4055 on_enterleave_call (aTHX_ block);
4056
4057 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4058 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4059 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4060}
4061
4062
4063MODULE = Coro::State PACKAGE = PerlIO::cede
4064
4065BOOT:
4066 PerlIO_define_layer (aTHX_ &PerlIO_cede);
4067
4068
4069MODULE = Coro::State PACKAGE = Coro::Semaphore
4070
4071SV *
4072new (SV *klass, SV *count = 0)
4073 CODE:
4074{
4075 int semcnt = 1;
4076
4077 if (count)
4078 {
4079 SvGETMAGIC (count);
4080
4081 if (SvOK (count))
4082 semcnt = SvIV (count);
4083 }
4084
4085 RETVAL = sv_bless (
4086 coro_waitarray_new (aTHX_ semcnt),
4087 GvSTASH (CvGV (cv))
4088 );
4089}
4090 OUTPUT:
4091 RETVAL
4092
4093# helper for Coro::Channel and others
4094SV *
4095_alloc (int count)
4096 CODE:
4097 RETVAL = coro_waitarray_new (aTHX_ count);
4098 OUTPUT:
4099 RETVAL
4100
4101SV *
4102count (SV *self)
4103 CODE:
4104 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
4105 OUTPUT:
4106 RETVAL
4107
4108void
4109up (SV *self, int adjust = 1)
4110 ALIAS:
4111 adjust = 1
4112 CODE:
4113 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
4114
4115void
4116down (...)
4117 CODE:
4118 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4119
4120void
4121wait (...)
4122 CODE:
4123 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
4124
4125void
4126try (SV *self)
4127 PPCODE:
4128{
4129 AV *av = (AV *)SvRV (self);
4130 SV *count_sv = AvARRAY (av)[0];
4131 IV count = SvIVX (count_sv);
4132
4133 if (count > 0)
4134 {
4135 --count;
4136 SvIVX (count_sv) = count;
4137 XSRETURN_YES;
4138 }
4139 else
4140 XSRETURN_NO;
4141}
4142
4143void
4144waiters (SV *self)
2481 PPCODE: 4145 PPCODE:
2482{ 4146{
4147 AV *av = (AV *)SvRV (self);
4148 int wcount = AvFILLp (av) + 1 - 1;
4149
4150 if (GIMME_V == G_SCALAR)
4151 XPUSHs (sv_2mortal (newSViv (wcount)));
4152 else
4153 {
4154 int i;
4155 EXTEND (SP, wcount);
4156 for (i = 1; i <= wcount; ++i)
4157 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
4158 }
4159}
4160
4161MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4162
4163void
4164_may_delete (SV *sem, int count, unsigned int extra_refs)
4165 PPCODE:
4166{
2483 AV *av = (AV *)SvRV (state); 4167 AV *av = (AV *)SvRV (sem);
2484 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2485 int i;
2486 4168
2487 errno = data->errorno; 4169 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2488 PL_laststype = data->laststype; 4170 && AvFILLp (av) == 0 /* no waiters, just count */
2489 PL_laststatval = data->laststatval; 4171 && SvIV (AvARRAY (av)[0]) == count)
2490 PL_statcache = data->statcache; 4172 XSRETURN_YES;
2491 4173
4174 XSRETURN_NO;
4175}
4176
4177MODULE = Coro::State PACKAGE = Coro::Signal
4178
4179SV *
4180new (SV *klass)
4181 CODE:
4182 RETVAL = sv_bless (
4183 coro_waitarray_new (aTHX_ 0),
4184 GvSTASH (CvGV (cv))
4185 );
4186 OUTPUT:
4187 RETVAL
4188
4189void
4190wait (...)
4191 CODE:
4192 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4193
4194void
4195broadcast (SV *self)
4196 CODE:
4197{
4198 AV *av = (AV *)SvRV (self);
4199 coro_signal_wake (aTHX_ av, AvFILLp (av));
4200}
4201
4202void
4203send (SV *self)
4204 CODE:
4205{
4206 AV *av = (AV *)SvRV (self);
4207
2492 EXTEND (SP, AvFILLp (av)); 4208 if (AvFILLp (av))
2493 for (i = 0; i < AvFILLp (av); ++i) 4209 coro_signal_wake (aTHX_ av, 1);
2494 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 4210 else
4211 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2495} 4212}
4213
4214IV
4215awaited (SV *self)
4216 CODE:
4217 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4218 OUTPUT:
4219 RETVAL
2496 4220
2497 4221
2498MODULE = Coro::State PACKAGE = Coro::AnyEvent 4222MODULE = Coro::State PACKAGE = Coro::AnyEvent
2499 4223
2500BOOT: 4224BOOT:
2501 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 4225 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2502 4226
2503SV * 4227void
2504_schedule (...) 4228_schedule (...)
2505 PROTOTYPE: @
2506 CODE: 4229 CODE:
2507{ 4230{
2508 static int incede; 4231 static int incede;
2509 4232
2510 api_cede_notself (); 4233 api_cede_notself (aTHX);
2511 4234
2512 ++incede; 4235 ++incede;
2513 while (coro_nready >= incede && api_cede ()) 4236 while (coro_nready >= incede && api_cede (aTHX))
2514 ; 4237 ;
2515 4238
2516 sv_setsv (sv_activity, &PL_sv_undef); 4239 sv_setsv (sv_activity, &PL_sv_undef);
2517 if (coro_nready >= incede) 4240 if (coro_nready >= incede)
2518 { 4241 {
2519 PUSHMARK (SP); 4242 PUSHMARK (SP);
2520 PUTBACK; 4243 PUTBACK;
2521 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4244 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2522 SPAGAIN;
2523 } 4245 }
2524 4246
2525 --incede; 4247 --incede;
2526} 4248}
2527 4249
2528 4250
2529MODULE = Coro::State PACKAGE = PerlIO::cede 4251MODULE = Coro::State PACKAGE = Coro::AIO
2530 4252
2531BOOT: 4253void
2532 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4254_register (char *target, char *proto, SV *req)
4255 CODE:
4256{
4257 SV *req_cv = s_get_cv_croak (req);
4258 /* newXSproto doesn't return the CV on 5.8 */
4259 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4260 sv_setpv ((SV *)slf_cv, proto);
4261 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4262}
2533 4263
4264MODULE = Coro::State PACKAGE = Coro::Select
4265
4266void
4267patch_pp_sselect ()
4268 CODE:
4269 if (!coro_old_pp_sselect)
4270 {
4271 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4272 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4273 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4274 }
4275
4276void
4277unpatch_pp_sselect ()
4278 CODE:
4279 if (coro_old_pp_sselect)
4280 {
4281 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4282 coro_old_pp_sselect = 0;
4283 }
4284
4285MODULE = Coro::State PACKAGE = Coro::Util
4286
4287void
4288_exit (int code)
4289 CODE:
4290 _exit (code);
4291
4292NV
4293time ()
4294 CODE:
4295 RETVAL = nvtime (aTHX);
4296 OUTPUT:
4297 RETVAL
4298
4299NV
4300gettimeofday ()
4301 PPCODE:
4302{
4303 UV tv [2];
4304 u2time (aTHX_ tv);
4305 EXTEND (SP, 2);
4306 PUSHs (sv_2mortal (newSVuv (tv [0])));
4307 PUSHs (sv_2mortal (newSVuv (tv [1])));
4308}
4309

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