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Comparing Coro/Coro/State.xs (file contents):
Revision 1.287 by root, Mon Nov 17 07:03:12 2008 UTC vs.
Revision 1.451 by root, Mon Jun 29 23:49:34 2015 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SvREFCNT_dec_NN
28 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
29#endif
30
31#ifndef SvREFCNT_inc_NN
32 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
33#endif
34
35#ifndef SVs_PADSTALE
36# define SVs_PADSTALE 0
37#endif
38
39#ifdef PadARRAY
40# define NEWPADAPI 1
41# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
42#else
43typedef AV PADNAMELIST;
44# if !PERL_VERSION_ATLEAST(5,8,0)
45typedef AV PADLIST;
46typedef AV PAD;
47# endif
48# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
49# define PadlistMAX(pl) AvFILLp (pl)
50# define PadlistNAMES(pl) (*PadlistARRAY (pl))
51# define PadARRAY AvARRAY
52# define PadMAX AvFILLp
53# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
54#endif
55#ifndef PadnamelistREFCNT
56# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
57#endif
58#ifndef PadnamelistREFCNT_dec
59# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
60#endif
61
62/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
63/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
64#if PERL_VERSION_ATLEAST(5,19,0)
65# define SVt_BIND SVt_IV
66#endif
67
68#if defined(_WIN32)
69# undef HAS_GETTIMEOFDAY
18# undef setjmp 70# undef setjmp
19# undef longjmp 71# undef longjmp
20# undef _exit 72# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 73# define setjmp _setjmp /* deep magic */
22#else 74#else
23# include <inttypes.h> /* most portable stdint.h */ 75# include <inttypes.h> /* most portable stdint.h */
24#endif 76#endif
25 77
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 78/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 79static int cctx_max_idle = 4;
55 80
56#define PERL_VERSION_ATLEAST(a,b,c) \ 81#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 82# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD
108#endif
109
110#ifndef CORO_STACKGUARD
111# define CORO_STACKGUARD 0
112#endif 83#endif
113 84
114/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 88#endif
118 89
119/* The next macros try to return the current stack pointer, in an as 90/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 91 * portable way as possible. */
121#if __GNUC__ >= 4 92#if __GNUC__ >= 4
93# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 94# define STACKLEVEL __builtin_frame_address (0)
123#else 95#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 96# define dSTACKLEVEL volatile void *stacklevel
97# define STACKLEVEL ((void *)&stacklevel)
125#endif 98#endif
126 99
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 100#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 101
144#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
145 104
146#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
147# if CORO_PTHREAD 106# if CORO_PTHREAD
148static void *coro_thx; 107static void *coro_thx;
149# endif 108# endif
150#endif 109#endif
151 110
111#ifdef __linux
112# include <time.h> /* for timespec */
113# include <syscall.h> /* for SYS_* */
114# ifdef SYS_clock_gettime
115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
116# define CORO_CLOCK_MONOTONIC 1
117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
118# endif
119#endif
120
152static double (*nvtime)(); /* so why doesn't it take void? */ 121static double (*nvtime)(); /* so why doesn't it take void? */
122static void (*u2time)(pTHX_ UV ret[2]);
123
124/* we hijack an hopefully unused CV flag for our purposes */
125#define CVf_SLF 0x4000
126static OP *pp_slf (pTHX);
127static void slf_destroy (pTHX_ struct coro *coro);
153 128
154static U32 cctx_gen; 129static U32 cctx_gen;
155static size_t cctx_stacksize = CORO_STACKSIZE; 130static size_t cctx_stacksize = CORO_STACKSIZE;
156static struct CoroAPI coroapi; 131static struct CoroAPI coroapi;
157static AV *main_mainstack; /* used to differentiate between $main and others */ 132static AV *main_mainstack; /* used to differentiate between $main and others */
158static JMPENV *main_top_env; 133static JMPENV *main_top_env;
159static HV *coro_state_stash, *coro_stash; 134static HV *coro_state_stash, *coro_stash;
160static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 135static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
161 136
137static AV *av_destroy; /* destruction queue */
138static SV *sv_manager; /* the manager coro */
139static SV *sv_idle; /* $Coro::idle */
140
162static GV *irsgv; /* $/ */ 141static GV *irsgv; /* $/ */
163static GV *stdoutgv; /* *STDOUT */ 142static GV *stdoutgv; /* *STDOUT */
164static SV *rv_diehook; 143static SV *rv_diehook;
165static SV *rv_warnhook; 144static SV *rv_warnhook;
166static HV *hv_sig; /* %SIG */ 145static HV *hv_sig; /* %SIG */
167 146
168/* async_pool helper stuff */ 147/* async_pool helper stuff */
169static SV *sv_pool_rss; 148static SV *sv_pool_rss;
170static SV *sv_pool_size; 149static SV *sv_pool_size;
150static SV *sv_async_pool_idle; /* description string */
171static AV *av_async_pool; 151static AV *av_async_pool; /* idle pool */
152static SV *sv_Coro; /* class string */
153static CV *cv_pool_handler;
172 154
173/* Coro::AnyEvent */ 155/* Coro::AnyEvent */
174static SV *sv_activity; 156static SV *sv_activity;
175 157
158/* enable processtime/realtime profiling */
159static char enable_times;
160typedef U32 coro_ts[2];
161static coro_ts time_real, time_cpu;
162static char times_valid;
163
176static struct coro_cctx *cctx_first; 164static struct coro_cctx *cctx_first;
177static int cctx_count, cctx_idle; 165static int cctx_count, cctx_idle;
178 166
179enum { 167enum
168{
180 CC_MAPPED = 0x01, 169 CC_MAPPED = 0x01,
181 CC_NOREUSE = 0x02, /* throw this away after tracing */ 170 CC_NOREUSE = 0x02, /* throw this away after tracing */
182 CC_TRACE = 0x04, 171 CC_TRACE = 0x04,
183 CC_TRACE_SUB = 0x08, /* trace sub calls */ 172 CC_TRACE_SUB = 0x08, /* trace sub calls */
184 CC_TRACE_LINE = 0x10, /* trace each statement */ 173 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
189typedef struct coro_cctx 178typedef struct coro_cctx
190{ 179{
191 struct coro_cctx *next; 180 struct coro_cctx *next;
192 181
193 /* the stack */ 182 /* the stack */
194 void *sptr; 183 struct coro_stack stack;
195 size_t ssize;
196 184
197 /* cpu state */ 185 /* cpu state */
198 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 186 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
187#ifndef NDEBUG
199 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 188 JMPENV *idle_te; /* same as idle_sp, but for top_env */
189#endif
200 JMPENV *top_env; 190 JMPENV *top_env;
201 coro_context cctx; 191 coro_context cctx;
202 192
203 U32 gen; 193 U32 gen;
204#if CORO_USE_VALGRIND 194#if CORO_USE_VALGRIND
205 int valgrind_id; 195 int valgrind_id;
206#endif 196#endif
207 unsigned char flags; 197 unsigned char flags;
208} coro_cctx; 198} coro_cctx;
209 199
200static coro_cctx *cctx_current; /* the currently running cctx */
201
202/*****************************************************************************/
203
204static MGVTBL coro_state_vtbl;
205
210enum { 206enum
207{
211 CF_RUNNING = 0x0001, /* coroutine is running */ 208 CF_RUNNING = 0x0001, /* coroutine is running */
212 CF_READY = 0x0002, /* coroutine is ready */ 209 CF_READY = 0x0002, /* coroutine is ready */
213 CF_NEW = 0x0004, /* has never been switched to */ 210 CF_NEW = 0x0004, /* has never been switched to */
214 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 211 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
212 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
213 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
215}; 214};
216 215
217/* the structure where most of the perl state is stored, overlaid on the cxstack */ 216/* the structure where most of the perl state is stored, overlaid on the cxstack */
218typedef struct 217typedef struct
219{ 218{
220 SV *defsv;
221 AV *defav;
222 SV *errsv;
223 SV *irsgv;
224#define VAR(name,type) type name; 219 #define VARx(name,expr,type) type name;
225# include "state.h" 220 #include "state.h"
226#undef VAR
227} perl_slots; 221} perl_slots;
228 222
223/* how many context stack entries do we need for perl_slots */
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 224#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
230 225
231/* this is a structure representing a perl-level coroutine */ 226/* this is a structure representing a perl-level coroutine */
232struct coro { 227struct coro
228{
233 /* the C coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 230 coro_cctx *cctx;
231
232 /* ready queue */
233 struct coro *next_ready;
235 234
236 /* state data */ 235 /* state data */
237 struct CoroSLF slf_frame; /* saved slf frame */ 236 struct CoroSLF slf_frame; /* saved slf frame */
238 AV *mainstack; 237 AV *mainstack;
239 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
240 239
240 CV *startcv; /* the CV to execute */
241 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
242 int refcnt; /* coroutines are refcounted, yes */
243 int flags; /* CF_ flags */ 242 int flags; /* CF_ flags */
244 HV *hv; /* the perl hash associated with this coro, if any */ 243 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro);
246 244
247 /* statistics */ 245 /* statistics */
248 int usecount; /* number of transfers to this coro */ 246 int usecount; /* number of transfers to this coro */
249 247
250 /* coro process data */ 248 /* coro process data */
251 int prio; 249 int prio;
252 SV *throw; /* exception to be thrown */ 250 SV *except; /* exception to be thrown */
251 SV *rouse_cb; /* last rouse callback */
252 AV *on_destroy; /* callbacks or coros to notify on destroy */
253 AV *status; /* the exit status list */
253 254
254 /* async_pool */ 255 /* async_pool */
255 SV *saved_deffh; 256 SV *saved_deffh;
257 SV *invoke_cb;
258 AV *invoke_av;
259
260 /* on_enter/on_leave */
261 AV *on_enter; AV *on_enter_xs;
262 AV *on_leave; AV *on_leave_xs;
263
264 /* swap_sv */
265 AV *swap_sv;
266
267 /* times */
268 coro_ts t_cpu, t_real;
256 269
257 /* linked list */ 270 /* linked list */
258 struct coro *next, *prev; 271 struct coro *next, *prev;
259}; 272};
260 273
261typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
262typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
263 276
264/* the following variables are effectively part of the perl context */ 277/* the following variables are effectively part of the perl context */
265/* and get copied between struct coro and these variables */ 278/* and get copied between struct coro and these variables */
266/* the mainr easonw e don't support windows process emulation */ 279/* the main reason we don't support windows process emulation */
267static struct CoroSLF slf_frame; /* the current slf frame */ 280static struct CoroSLF slf_frame; /* the current slf frame */
268static SV *coro_throw;
269 281
270/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
271 283
272#define PRIO_MAX 3 284#define CORO_PRIO_MAX 3
273#define PRIO_HIGH 1 285#define CORO_PRIO_HIGH 1
274#define PRIO_NORMAL 0 286#define CORO_PRIO_NORMAL 0
275#define PRIO_LOW -1 287#define CORO_PRIO_LOW -1
276#define PRIO_IDLE -3 288#define CORO_PRIO_IDLE -3
277#define PRIO_MIN -4 289#define CORO_PRIO_MIN -4
278 290
279/* for Coro.pm */ 291/* for Coro.pm */
280static SV *coro_current; 292static SV *coro_current;
281static SV *coro_readyhook; 293static SV *coro_readyhook;
282static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 294static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
295static CV *cv_coro_run;
283static struct coro *coro_first; 296static struct coro *coro_first;
284#define coro_nready coroapi.nready 297#define coro_nready coroapi.nready
285 298
299/** JIT *********************************************************************/
300
301#if CORO_JIT
302 /* APPLE doesn't have mmap though */
303 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
304 #ifndef CORO_JIT_TYPE
305 #if ECB_AMD64 && CORO_JIT_UNIXY
306 #define CORO_JIT_TYPE "amd64-unix"
307 #elif __i386 && CORO_JIT_UNIXY
308 #define CORO_JIT_TYPE "x86-unix"
309 #endif
310 #endif
311#endif
312
313#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
314 #undef CORO_JIT
315#endif
316
317#if CORO_JIT
318 typedef void (*load_save_perl_slots_type)(perl_slots *);
319 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
320#endif
321
322/** Coro::Select ************************************************************/
323
324static OP *(*coro_old_pp_sselect) (pTHX);
325static SV *coro_select_select;
326
327/* horrible hack, but if it works... */
328static OP *
329coro_pp_sselect (pTHX)
330{
331 dSP;
332 PUSHMARK (SP - 4); /* fake argument list */
333 XPUSHs (coro_select_select);
334 PUTBACK;
335
336 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
337 PL_op->op_flags |= OPf_STACKED;
338 PL_op->op_private = 0;
339 return PL_ppaddr [OP_ENTERSUB](aTHX);
340}
341
342/** time stuff **************************************************************/
343
344#ifdef HAS_GETTIMEOFDAY
345
346ecb_inline void
347coro_u2time (pTHX_ UV ret[2])
348{
349 struct timeval tv;
350 gettimeofday (&tv, 0);
351
352 ret [0] = tv.tv_sec;
353 ret [1] = tv.tv_usec;
354}
355
356ecb_inline double
357coro_nvtime (void)
358{
359 struct timeval tv;
360 gettimeofday (&tv, 0);
361
362 return tv.tv_sec + tv.tv_usec * 1e-6;
363}
364
365ecb_inline void
366time_init (pTHX)
367{
368 nvtime = coro_nvtime;
369 u2time = coro_u2time;
370}
371
372#else
373
374ecb_inline void
375time_init (pTHX)
376{
377 SV **svp;
378
379 require_pv ("Time/HiRes.pm");
380
381 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
382
383 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
384 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
385
386 nvtime = INT2PTR (double (*)(), SvIV (*svp));
387
388 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
389 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
390}
391
392#endif
393
286/** lowlevel stuff **********************************************************/ 394/** lowlevel stuff **********************************************************/
287 395
288static SV * 396static SV * ecb_noinline
289coro_get_sv (pTHX_ const char *name, int create) 397coro_get_sv (pTHX_ const char *name, int create)
290{ 398{
291#if PERL_VERSION_ATLEAST (5,10,0) 399#if PERL_VERSION_ATLEAST (5,10,0)
292 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 400 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
293 get_sv (name, create); 401 get_sv (name, create);
294#endif 402#endif
295 return get_sv (name, create); 403 return get_sv (name, create);
296} 404}
297 405
298static AV * 406static AV * ecb_noinline
299coro_get_av (pTHX_ const char *name, int create) 407coro_get_av (pTHX_ const char *name, int create)
300{ 408{
301#if PERL_VERSION_ATLEAST (5,10,0) 409#if PERL_VERSION_ATLEAST (5,10,0)
302 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 410 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
303 get_av (name, create); 411 get_av (name, create);
304#endif 412#endif
305 return get_av (name, create); 413 return get_av (name, create);
306} 414}
307 415
308static HV * 416static HV * ecb_noinline
309coro_get_hv (pTHX_ const char *name, int create) 417coro_get_hv (pTHX_ const char *name, int create)
310{ 418{
311#if PERL_VERSION_ATLEAST (5,10,0) 419#if PERL_VERSION_ATLEAST (5,10,0)
312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 420 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
313 get_hv (name, create); 421 get_hv (name, create);
314#endif 422#endif
315 return get_hv (name, create); 423 return get_hv (name, create);
316} 424}
317 425
318static AV * 426ecb_inline void
427coro_times_update (void)
428{
429#ifdef coro_clock_gettime
430 struct timespec ts;
431
432 ts.tv_sec = ts.tv_nsec = 0;
433 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
434 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
435
436 ts.tv_sec = ts.tv_nsec = 0;
437 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
438 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
439#else
440 dTHX;
441 UV tv[2];
442
443 u2time (aTHX_ tv);
444 time_real [0] = tv [0];
445 time_real [1] = tv [1] * 1000;
446#endif
447}
448
449ecb_inline void
450coro_times_add (struct coro *c)
451{
452 c->t_real [1] += time_real [1];
453 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
454 c->t_real [0] += time_real [0];
455
456 c->t_cpu [1] += time_cpu [1];
457 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
458 c->t_cpu [0] += time_cpu [0];
459}
460
461ecb_inline void
462coro_times_sub (struct coro *c)
463{
464 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
465 c->t_real [1] -= time_real [1];
466 c->t_real [0] -= time_real [0];
467
468 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
469 c->t_cpu [1] -= time_cpu [1];
470 c->t_cpu [0] -= time_cpu [0];
471}
472
473/*****************************************************************************/
474/* magic glue */
475
476#define CORO_MAGIC_type_cv 26
477#define CORO_MAGIC_type_state PERL_MAGIC_ext
478
479#define CORO_MAGIC_NN(sv, type) \
480 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
481 ? SvMAGIC (sv) \
482 : mg_find (sv, type))
483
484#define CORO_MAGIC(sv, type) \
485 (ecb_expect_true (SvMAGIC (sv)) \
486 ? CORO_MAGIC_NN (sv, type) \
487 : 0)
488
489#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
490#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
491
492ecb_inline MAGIC *
493SvSTATEhv_p (pTHX_ SV *coro)
494{
495 MAGIC *mg;
496
497 if (ecb_expect_true (
498 SvTYPE (coro) == SVt_PVHV
499 && (mg = CORO_MAGIC_state (coro))
500 && mg->mg_virtual == &coro_state_vtbl
501 ))
502 return mg;
503
504 return 0;
505}
506
507ecb_inline struct coro *
508SvSTATE_ (pTHX_ SV *coro_sv)
509{
510 MAGIC *mg;
511
512 if (SvROK (coro_sv))
513 coro_sv = SvRV (coro_sv);
514
515 mg = SvSTATEhv_p (aTHX_ coro_sv);
516 if (!mg)
517 croak ("Coro::State object required");
518
519 return (struct coro *)mg->mg_ptr;
520}
521
522#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
523
524/* faster than SvSTATE, but expects a coroutine hv */
525#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
526#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
527
528/*****************************************************************************/
529/* padlist management and caching */
530
531ecb_inline PADLIST *
319coro_clone_padlist (pTHX_ CV *cv) 532coro_derive_padlist (pTHX_ CV *cv)
320{ 533{
321 AV *padlist = CvPADLIST (cv); 534 PADLIST *padlist = CvPADLIST (cv);
322 AV *newpadlist, *newpad; 535 PADLIST *newpadlist;
536 PADNAMELIST *padnames;
537 PAD *newpad;
538 PADOFFSET off = PadlistMAX (padlist) + 1;
323 539
324 newpadlist = newAV (); 540#if NEWPADAPI
541
542 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
543 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
544 while (!PadlistARRAY (padlist)[off - 1])
545 --off;
546
547 Perl_pad_push (aTHX_ padlist, off);
548
549 newpad = PadlistARRAY (padlist)[off];
550 PadlistARRAY (padlist)[off] = 0;
551
552#else
553
554#if PERL_VERSION_ATLEAST (5,10,0)
555 Perl_pad_push (aTHX_ padlist, off);
556#else
557 Perl_pad_push (aTHX_ padlist, off, 1);
558#endif
559
560 newpad = PadlistARRAY (padlist)[off];
561 PadlistMAX (padlist) = off - 1;
562
563#endif
564
565 newPADLIST (newpadlist);
566#if !PERL_VERSION_ATLEAST(5,15,3)
567 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
325 AvREAL_off (newpadlist); 568 AvREAL_off (newpadlist);
326#if PERL_VERSION_ATLEAST (5,10,0)
327 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
328#else
329 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
330#endif 569#endif
331 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
332 --AvFILLp (padlist);
333 570
334 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 571 /* Already extended to 2 elements by newPADLIST. */
335 av_store (newpadlist, 1, (SV *)newpad); 572 PadlistMAX (newpadlist) = 1;
573
574 padnames = PadlistNAMES (padlist);
575 ++PadnamelistREFCNT (padnames);
576 PadlistNAMES (newpadlist) = padnames;
577
578 PadlistARRAY (newpadlist)[1] = newpad;
336 579
337 return newpadlist; 580 return newpadlist;
338} 581}
339 582
340static void 583ecb_inline void
341free_padlist (pTHX_ AV *padlist) 584free_padlist (pTHX_ PADLIST *padlist)
342{ 585{
343 /* may be during global destruction */ 586 /* may be during global destruction */
344 if (SvREFCNT (padlist)) 587 if (!IN_DESTRUCT)
345 { 588 {
346 I32 i = AvFILLp (padlist); 589 I32 i = PadlistMAX (padlist);
347 while (i >= 0) 590
591 while (i > 0) /* special-case index 0 */
348 { 592 {
349 SV **svp = av_fetch (padlist, i--, FALSE); 593 /* we try to be extra-careful here */
594 PAD *pad = PadlistARRAY (padlist)[i--];
595
350 if (svp) 596 if (pad)
351 { 597 {
352 SV *sv; 598 I32 j = PadMAX (pad);
353 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 599
600 while (j >= 0)
354 SvREFCNT_dec (sv); 601 SvREFCNT_dec (PadARRAY (pad)[j--]);
355 602
603 PadMAX (pad) = -1;
356 SvREFCNT_dec (*svp); 604 SvREFCNT_dec (pad);
357 } 605 }
358 } 606 }
359 607
608 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
609
610#if NEWPADAPI
611 Safefree (PadlistARRAY (padlist));
612 Safefree (padlist);
613#else
614 AvFILLp (padlist) = -1;
615 AvREAL_off (padlist);
360 SvREFCNT_dec ((SV*)padlist); 616 SvREFCNT_dec ((SV*)padlist);
617#endif
361 } 618 }
362} 619}
363 620
364static int 621static int
365coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 622coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
366{ 623{
367 AV *padlist; 624 PADLIST *padlist;
368 AV *av = (AV *)mg->mg_obj; 625 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
626 size_t len = *(size_t *)mg->mg_ptr;
369 627
370 /* casting is fun. */ 628 /* perl manages to free our internal AV and _then_ call us */
371 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 629 if (IN_DESTRUCT)
630 return 0;
631
632 while (len--)
372 free_padlist (aTHX_ padlist); 633 free_padlist (aTHX_ padlists[len]);
373
374 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
375 634
376 return 0; 635 return 0;
377} 636}
378
379#define CORO_MAGIC_type_cv 26
380#define CORO_MAGIC_type_state PERL_MAGIC_ext
381 637
382static MGVTBL coro_cv_vtbl = { 638static MGVTBL coro_cv_vtbl = {
383 0, 0, 0, 0, 639 0, 0, 0, 0,
384 coro_cv_free 640 coro_cv_free
385}; 641};
386 642
387#define CORO_MAGIC_NN(sv, type) \
388 (expect_true (SvMAGIC (sv)->mg_type == type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type))
391
392#define CORO_MAGIC(sv, type) \
393 (expect_true (SvMAGIC (sv)) \
394 ? CORO_MAGIC_NN (sv, type) \
395 : 0)
396
397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
398#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
399
400INLINE struct coro *
401SvSTATE_ (pTHX_ SV *coro)
402{
403 HV *stash;
404 MAGIC *mg;
405
406 if (SvROK (coro))
407 coro = SvRV (coro);
408
409 if (expect_false (SvTYPE (coro) != SVt_PVHV))
410 croak ("Coro::State object required");
411
412 stash = SvSTASH (coro);
413 if (expect_false (stash != coro_stash && stash != coro_state_stash))
414 {
415 /* very slow, but rare, check */
416 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
417 croak ("Coro::State object required");
418 }
419
420 mg = CORO_MAGIC_state (coro);
421 return (struct coro *)mg->mg_ptr;
422}
423
424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425
426/* faster than SvSTATE, but expects a coroutine hv */
427#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
428#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
429
430/* the next two functions merely cache the padlists */ 643/* the next two functions merely cache the padlists */
431static void 644ecb_inline void
432get_padlist (pTHX_ CV *cv) 645get_padlist (pTHX_ CV *cv)
433{ 646{
434 MAGIC *mg = CORO_MAGIC_cv (cv); 647 MAGIC *mg = CORO_MAGIC_cv (cv);
435 AV *av; 648 size_t *lenp;
436 649
437 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 650 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
438 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 651 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
439 else 652 else
440 { 653 {
441#if CORO_PREFER_PERL_FUNCTIONS 654#if CORO_PREFER_PERL_FUNCTIONS
442 /* this is probably cleaner? but also slower! */ 655 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */ 656 /* in practise, it seems to be less stable */
444 CV *cp = Perl_cv_clone (cv); 657 CV *cp = Perl_cv_clone (aTHX_ cv);
445 CvPADLIST (cv) = CvPADLIST (cp); 658 CvPADLIST (cv) = CvPADLIST (cp);
446 CvPADLIST (cp) = 0; 659 CvPADLIST (cp) = 0;
447 SvREFCNT_dec (cp); 660 SvREFCNT_dec (cp);
448#else 661#else
449 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 662 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
450#endif 663#endif
451 } 664 }
452} 665}
453 666
454static void 667ecb_inline void
455put_padlist (pTHX_ CV *cv) 668put_padlist (pTHX_ CV *cv)
456{ 669{
457 MAGIC *mg = CORO_MAGIC_cv (cv); 670 MAGIC *mg = CORO_MAGIC_cv (cv);
458 AV *av;
459 671
460 if (expect_false (!mg)) 672 if (ecb_expect_false (!mg))
673 {
461 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 674 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
675 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
676 mg->mg_len = 1; /* so mg_free frees mg_ptr */
677 }
678 else
679 Renew (mg->mg_ptr,
680 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
681 char);
462 682
463 av = (AV *)mg->mg_obj; 683 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
464
465 if (expect_false (AvFILLp (av) >= AvMAX (av)))
466 av_extend (av, AvMAX (av) + 1);
467
468 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
469} 684}
470 685
471/** load & save, init *******************************************************/ 686/** load & save, init *******************************************************/
687
688ecb_inline void
689swap_sv (SV *a, SV *b)
690{
691 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
692 SV tmp;
693
694 /* swap sv_any */
695 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
696
697 /* swap sv_flags */
698 SvFLAGS (&tmp) = SvFLAGS (a);
699 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
700 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
701
702#if PERL_VERSION_ATLEAST (5,10,0)
703 /* perl 5.10 and later complicates this _quite_ a bit, but it also
704 * is much faster, so no quarrels here. alternatively, we could
705 * sv_upgrade to avoid this.
706 */
707 {
708 /* swap sv_u */
709 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
710
711 /* if SvANY points to the head, we need to adjust the pointers,
712 * as the pointer for a still points to b, and maybe vice versa.
713 */
714 #define svany_in_head(type) \
715 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
716
717 if (svany_in_head (SvTYPE (a)))
718 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
719
720 if (svany_in_head (SvTYPE (b)))
721 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
722 }
723#endif
724}
725
726/* swap sv heads, at least logically */
727static void
728swap_svs (pTHX_ Coro__State c)
729{
730 int i;
731
732 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
733 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
734}
735
736#define SWAP_SVS(coro) \
737 if (ecb_expect_false ((coro)->swap_sv)) \
738 swap_svs (aTHX_ (coro))
739
740static void
741on_enterleave_call (pTHX_ SV *cb);
472 742
473static void 743static void
474load_perl (pTHX_ Coro__State c) 744load_perl (pTHX_ Coro__State c)
475{ 745{
476 perl_slots *slot = c->slot; 746 perl_slots *slot = c->slot;
477 c->slot = 0; 747 c->slot = 0;
478 748
479 PL_mainstack = c->mainstack; 749 PL_mainstack = c->mainstack;
480 750
481 GvSV (PL_defgv) = slot->defsv; 751#if CORO_JIT
482 GvAV (PL_defgv) = slot->defav; 752 load_perl_slots (slot);
483 GvSV (PL_errgv) = slot->errsv; 753#else
484 GvSV (irsgv) = slot->irsgv;
485
486 #define VAR(name,type) PL_ ## name = slot->name; 754 #define VARx(name,expr,type) expr = slot->name;
487 # include "state.h" 755 #include "state.h"
488 #undef VAR 756#endif
489 757
490 { 758 {
491 dSP; 759 dSP;
492 760
493 CV *cv; 761 CV *cv;
494 762
495 /* now do the ugly restore mess */ 763 /* now do the ugly restore mess */
496 while (expect_true (cv = (CV *)POPs)) 764 while (ecb_expect_true (cv = (CV *)POPs))
497 { 765 {
498 put_padlist (aTHX_ cv); /* mark this padlist as available */ 766 put_padlist (aTHX_ cv); /* mark this padlist as available */
499 CvDEPTH (cv) = PTR2IV (POPs); 767 CvDEPTH (cv) = PTR2IV (POPs);
500 CvPADLIST (cv) = (AV *)POPs; 768 CvPADLIST (cv) = (PADLIST *)POPs;
501 } 769 }
502 770
503 PUTBACK; 771 PUTBACK;
504 } 772 }
505 773
506 slf_frame = c->slf_frame; 774 slf_frame = c->slf_frame;
507 coro_throw = c->throw; 775 CORO_THROW = c->except;
776
777 if (ecb_expect_false (enable_times))
778 {
779 if (ecb_expect_false (!times_valid))
780 coro_times_update ();
781
782 coro_times_sub (c);
783 }
784
785 if (ecb_expect_false (c->on_enter))
786 {
787 int i;
788
789 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
790 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
791 }
792
793 if (ecb_expect_false (c->on_enter_xs))
794 {
795 int i;
796
797 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
798 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
799 }
800
801 SWAP_SVS (c);
508} 802}
509 803
510static void 804static void
511save_perl (pTHX_ Coro__State c) 805save_perl (pTHX_ Coro__State c)
512{ 806{
513 c->throw = coro_throw; 807 SWAP_SVS (c);
808
809 if (ecb_expect_false (c->on_leave_xs))
810 {
811 int i;
812
813 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
814 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
815 }
816
817 if (ecb_expect_false (c->on_leave))
818 {
819 int i;
820
821 for (i = AvFILLp (c->on_leave); i >= 0; --i)
822 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
823 }
824
825 times_valid = 0;
826
827 if (ecb_expect_false (enable_times))
828 {
829 coro_times_update (); times_valid = 1;
830 coro_times_add (c);
831 }
832
833 c->except = CORO_THROW;
514 c->slf_frame = slf_frame; 834 c->slf_frame = slf_frame;
515 835
516 { 836 {
517 dSP; 837 dSP;
518 I32 cxix = cxstack_ix; 838 I32 cxix = cxstack_ix;
… …
526 846
527 XPUSHs (Nullsv); 847 XPUSHs (Nullsv);
528 /* this loop was inspired by pp_caller */ 848 /* this loop was inspired by pp_caller */
529 for (;;) 849 for (;;)
530 { 850 {
531 while (expect_true (cxix >= 0)) 851 while (ecb_expect_true (cxix >= 0))
532 { 852 {
533 PERL_CONTEXT *cx = &ccstk[cxix--]; 853 PERL_CONTEXT *cx = &ccstk[cxix--];
534 854
535 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 855 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
536 { 856 {
537 CV *cv = cx->blk_sub.cv; 857 CV *cv = cx->blk_sub.cv;
538 858
539 if (expect_true (CvDEPTH (cv))) 859 if (ecb_expect_true (CvDEPTH (cv)))
540 { 860 {
541 EXTEND (SP, 3); 861 EXTEND (SP, 3);
542 PUSHs ((SV *)CvPADLIST (cv)); 862 PUSHs ((SV *)CvPADLIST (cv));
543 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 863 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
544 PUSHs ((SV *)cv); 864 PUSHs ((SV *)cv);
… …
547 get_padlist (aTHX_ cv); 867 get_padlist (aTHX_ cv);
548 } 868 }
549 } 869 }
550 } 870 }
551 871
552 if (expect_true (top_si->si_type == PERLSI_MAIN)) 872 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
553 break; 873 break;
554 874
555 top_si = top_si->si_prev; 875 top_si = top_si->si_prev;
556 ccstk = top_si->si_cxstack; 876 ccstk = top_si->si_cxstack;
557 cxix = top_si->si_cxix; 877 cxix = top_si->si_cxix;
… …
559 879
560 PUTBACK; 880 PUTBACK;
561 } 881 }
562 882
563 /* allocate some space on the context stack for our purposes */ 883 /* allocate some space on the context stack for our purposes */
564 /* we manually unroll here, as usually 2 slots is enough */ 884 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
565 if (SLOT_COUNT >= 1) CXINC;
566 if (SLOT_COUNT >= 2) CXINC;
567 if (SLOT_COUNT >= 3) CXINC;
568 { 885 {
569 int i; 886 unsigned int i;
887
570 for (i = 3; i < SLOT_COUNT; ++i) 888 for (i = 0; i < SLOT_COUNT; ++i)
571 CXINC; 889 CXINC;
572 } 890
573 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 891 cxstack_ix -= SLOT_COUNT; /* undo allocation */
892 }
574 893
575 c->mainstack = PL_mainstack; 894 c->mainstack = PL_mainstack;
576 895
577 { 896 {
578 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 897 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
579 898
580 slot->defav = GvAV (PL_defgv); 899#if CORO_JIT
581 slot->defsv = DEFSV; 900 save_perl_slots (slot);
582 slot->errsv = ERRSV; 901#else
583 slot->irsgv = GvSV (irsgv);
584
585 #define VAR(name,type) slot->name = PL_ ## name; 902 #define VARx(name,expr,type) slot->name = expr;
586 # include "state.h" 903 #include "state.h"
587 #undef VAR 904#endif
588 } 905 }
589} 906}
590 907
591/* 908/*
592 * allocate various perl stacks. This is almost an exact copy 909 * allocate various perl stacks. This is almost an exact copy
593 * of perl.c:init_stacks, except that it uses less memory 910 * of perl.c:init_stacks, except that it uses less memory
594 * on the (sometimes correct) assumption that coroutines do 911 * on the (sometimes correct) assumption that coroutines do
595 * not usually need a lot of stackspace. 912 * not usually need a lot of stackspace.
596 */ 913 */
597#if CORO_PREFER_PERL_FUNCTIONS 914#if CORO_PREFER_PERL_FUNCTIONS
598# define coro_init_stacks init_stacks 915# define coro_init_stacks(thx) init_stacks ()
599#else 916#else
600static void 917static void
601coro_init_stacks (pTHX) 918coro_init_stacks (pTHX)
602{ 919{
603 PL_curstackinfo = new_stackinfo(32, 8); 920 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
604 PL_curstackinfo->si_type = PERLSI_MAIN; 921 PL_curstackinfo->si_type = PERLSI_MAIN;
605 PL_curstack = PL_curstackinfo->si_stack; 922 PL_curstack = PL_curstackinfo->si_stack;
606 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 923 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
607 924
608 PL_stack_base = AvARRAY(PL_curstack); 925 PL_stack_base = AvARRAY(PL_curstack);
… …
623#endif 940#endif
624 941
625 New(54,PL_scopestack,8,I32); 942 New(54,PL_scopestack,8,I32);
626 PL_scopestack_ix = 0; 943 PL_scopestack_ix = 0;
627 PL_scopestack_max = 8; 944 PL_scopestack_max = 8;
945#if HAS_SCOPESTACK_NAME
946 New(54,PL_scopestack_name,8,const char*);
947#endif
628 948
629 New(54,PL_savestack,24,ANY); 949 New(54,PL_savestack,24,ANY);
630 PL_savestack_ix = 0; 950 PL_savestack_ix = 0;
631 PL_savestack_max = 24; 951 PL_savestack_max = 24;
632 952
… …
660 } 980 }
661 981
662 Safefree (PL_tmps_stack); 982 Safefree (PL_tmps_stack);
663 Safefree (PL_markstack); 983 Safefree (PL_markstack);
664 Safefree (PL_scopestack); 984 Safefree (PL_scopestack);
985#if HAS_SCOPESTACK_NAME
986 Safefree (PL_scopestack_name);
987#endif
665 Safefree (PL_savestack); 988 Safefree (PL_savestack);
666#if !PERL_VERSION_ATLEAST (5,10,0) 989#if !PERL_VERSION_ATLEAST (5,10,0)
667 Safefree (PL_retstack); 990 Safefree (PL_retstack);
668#endif 991#endif
669} 992}
670 993
994#define CORO_RSS \
995 rss += sizeof (SYM (curstackinfo)); \
996 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
997 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
998 rss += SYM (tmps_max) * sizeof (SV *); \
999 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
1000 rss += SYM (scopestack_max) * sizeof (I32); \
1001 rss += SYM (savestack_max) * sizeof (ANY);
1002
671static size_t 1003static size_t
672coro_rss (pTHX_ struct coro *coro) 1004coro_rss (pTHX_ struct coro *coro)
673{ 1005{
674 size_t rss = sizeof (*coro); 1006 size_t rss = sizeof (*coro);
675 1007
676 if (coro->mainstack) 1008 if (coro->mainstack)
677 { 1009 {
678 perl_slots tmp_slot;
679 perl_slots *slot;
680
681 if (coro->flags & CF_RUNNING) 1010 if (coro->flags & CF_RUNNING)
682 { 1011 {
683 slot = &tmp_slot; 1012 #define SYM(sym) PL_ ## sym
684 1013 CORO_RSS;
685 #define VAR(name,type) slot->name = PL_ ## name;
686 # include "state.h"
687 #undef VAR 1014 #undef SYM
688 } 1015 }
689 else 1016 else
690 slot = coro->slot;
691
692 if (slot)
693 { 1017 {
694 rss += sizeof (slot->curstackinfo); 1018 #define SYM(sym) coro->slot->sym
695 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1019 CORO_RSS;
696 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1020 #undef SYM
697 rss += slot->tmps_max * sizeof (SV *);
698 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
699 rss += slot->scopestack_max * sizeof (I32);
700 rss += slot->savestack_max * sizeof (ANY);
701
702#if !PERL_VERSION_ATLEAST (5,10,0)
703 rss += slot->retstack_max * sizeof (OP *);
704#endif
705 } 1021 }
706 } 1022 }
707 1023
708 return rss; 1024 return rss;
709} 1025}
… …
722#endif 1038#endif
723 1039
724/* 1040/*
725 * This overrides the default magic get method of %SIG elements. 1041 * This overrides the default magic get method of %SIG elements.
726 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1042 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
727 * and instead of tryign to save and restore the hash elements, we just provide 1043 * and instead of trying to save and restore the hash elements (extremely slow),
728 * readback here. 1044 * we just provide our own readback here.
729 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
730 * not expecting this to actually change the hook. This is a potential problem
731 * when a schedule happens then, but we ignore this.
732 */ 1045 */
733static int 1046static int ecb_cold
734coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1047coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
735{ 1048{
736 const char *s = MgPV_nolen_const (mg); 1049 const char *s = MgPV_nolen_const (mg);
737 1050
738 if (*s == '_') 1051 if (*s == '_')
739 { 1052 {
740 SV **svp = 0; 1053 SV **svp = 0;
741 1054
742 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1055 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
743 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1056 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
744 1057
745 if (svp) 1058 if (svp)
746 { 1059 {
747 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1060 SV *ssv;
1061
1062 if (!*svp)
1063 ssv = &PL_sv_undef;
1064 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1065 ssv = sv_2mortal (newRV_inc (*svp));
1066 else
1067 ssv = *svp;
1068
1069 sv_setsv (sv, ssv);
748 return 0; 1070 return 0;
749 } 1071 }
750 } 1072 }
751 1073
752 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1074 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
753} 1075}
754 1076
755static int 1077static int ecb_cold
756coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1078coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
757{ 1079{
758 const char *s = MgPV_nolen_const (mg); 1080 const char *s = MgPV_nolen_const (mg);
759 1081
760 if (*s == '_') 1082 if (*s == '_')
… …
774 } 1096 }
775 1097
776 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1098 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
777} 1099}
778 1100
779static int 1101static int ecb_cold
780coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1102coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
781{ 1103{
782 const char *s = MgPV_nolen_const (mg); 1104 const char *s = MgPV_nolen_const (mg);
783 1105
784 if (*s == '_') 1106 if (*s == '_')
… …
789 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1111 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
790 1112
791 if (svp) 1113 if (svp)
792 { 1114 {
793 SV *old = *svp; 1115 SV *old = *svp;
794 *svp = newSVsv (sv); 1116 *svp = SvOK (sv) ? newSVsv (sv) : 0;
795 SvREFCNT_dec (old); 1117 SvREFCNT_dec (old);
796 return 0; 1118 return 0;
797 } 1119 }
798 } 1120 }
799 1121
… …
811slf_check_nop (pTHX_ struct CoroSLF *frame) 1133slf_check_nop (pTHX_ struct CoroSLF *frame)
812{ 1134{
813 return 0; 1135 return 0;
814} 1136}
815 1137
816static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1138static int
1139slf_check_repeat (pTHX_ struct CoroSLF *frame)
1140{
1141 return 1;
1142}
1143
1144static UNOP init_perl_op;
1145
1146ecb_noinline static void /* noinline to keep it out of the transfer fast path */
817coro_setup (pTHX_ struct coro *coro) 1147init_perl (pTHX_ struct coro *coro)
818{ 1148{
819 /* 1149 /*
820 * emulate part of the perl startup here. 1150 * emulate part of the perl startup here.
821 */ 1151 */
822 coro_init_stacks (aTHX); 1152 coro_init_stacks (aTHX);
823 1153
824 PL_runops = RUNOPS_DEFAULT; 1154 PL_runops = RUNOPS_DEFAULT;
825 PL_curcop = &PL_compiling; 1155 PL_curcop = &PL_compiling;
826 PL_in_eval = EVAL_NULL; 1156 PL_in_eval = EVAL_NULL;
827 PL_comppad = 0; 1157 PL_comppad = 0;
1158 PL_comppad_name = 0;
1159 PL_comppad_name_fill = 0;
1160 PL_comppad_name_floor = 0;
828 PL_curpm = 0; 1161 PL_curpm = 0;
829 PL_curpad = 0; 1162 PL_curpad = 0;
830 PL_localizing = 0; 1163 PL_localizing = 0;
831 PL_dirty = 0;
832 PL_restartop = 0; 1164 PL_restartop = 0;
833#if PERL_VERSION_ATLEAST (5,10,0) 1165#if PERL_VERSION_ATLEAST (5,10,0)
834 PL_parser = 0; 1166 PL_parser = 0;
835#endif 1167#endif
1168 PL_hints = 0;
836 1169
837 /* recreate the die/warn hooks */ 1170 /* recreate the die/warn hooks */
838 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1171 PL_diehook = SvREFCNT_inc (rv_diehook);
839 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1172 PL_warnhook = SvREFCNT_inc (rv_warnhook);
840 1173
841 GvSV (PL_defgv) = newSV (0); 1174 GvSV (PL_defgv) = newSV (0);
842 GvAV (PL_defgv) = coro->args; coro->args = 0; 1175 GvAV (PL_defgv) = coro->args; coro->args = 0;
843 GvSV (PL_errgv) = newSV (0); 1176 GvSV (PL_errgv) = newSV (0);
844 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1177 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1178 GvHV (PL_hintgv) = newHV ();
1179#if PERL_VERSION_ATLEAST (5,10,0)
1180 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1181#endif
845 PL_rs = newSVsv (GvSV (irsgv)); 1182 PL_rs = newSVsv (GvSV (irsgv));
846 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1183 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
847 1184
848 { 1185 {
849 dSP; 1186 dSP;
850 UNOP myop; 1187 UNOP myop;
851 1188
852 Zero (&myop, 1, UNOP); 1189 Zero (&myop, 1, UNOP);
853 myop.op_next = Nullop; 1190 myop.op_next = Nullop;
1191 myop.op_type = OP_ENTERSUB;
854 myop.op_flags = OPf_WANT_VOID; 1192 myop.op_flags = OPf_WANT_VOID;
855 1193
856 PUSHMARK (SP); 1194 PUSHMARK (SP);
857 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1195 PUSHs ((SV *)coro->startcv);
858 PUTBACK; 1196 PUTBACK;
859 PL_op = (OP *)&myop; 1197 PL_op = (OP *)&myop;
860 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1198 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
861 SPAGAIN;
862 } 1199 }
863 1200
864 /* this newly created coroutine might be run on an existing cctx which most 1201 /* this newly created coroutine might be run on an existing cctx which most
865 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1202 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
866 */ 1203 */
867 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1204 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
868 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1205 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1206 slf_frame.destroy = 0;
869 1207
870 coro_throw = coro->throw; 1208 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
871} 1209 init_perl_op.op_next = PL_op;
1210 init_perl_op.op_type = OP_ENTERSUB;
1211 init_perl_op.op_ppaddr = pp_slf;
1212 /* no flags etc. required, as an init function won't be called */
872 1213
1214 PL_op = (OP *)&init_perl_op;
1215
1216 /* copy throw, in case it was set before init_perl */
1217 CORO_THROW = coro->except;
1218
1219 SWAP_SVS (coro);
1220
1221 if (ecb_expect_false (enable_times))
1222 {
1223 coro_times_update ();
1224 coro_times_sub (coro);
1225 }
1226}
1227
873static void 1228static void
874coro_destruct (pTHX_ struct coro *coro) 1229coro_unwind_stacks (pTHX)
875{ 1230{
876 if (!IN_DESTRUCT) 1231 if (!IN_DESTRUCT)
877 { 1232 {
878 /* restore all saved variables and stuff */ 1233 /* restore all saved variables and stuff */
879 LEAVE_SCOPE (0); 1234 LEAVE_SCOPE (0);
… …
887 POPSTACK_TO (PL_mainstack); 1242 POPSTACK_TO (PL_mainstack);
888 1243
889 /* unwind main stack */ 1244 /* unwind main stack */
890 dounwind (-1); 1245 dounwind (-1);
891 } 1246 }
1247}
892 1248
893 SvREFCNT_dec (GvSV (PL_defgv)); 1249static void
894 SvREFCNT_dec (GvAV (PL_defgv)); 1250destroy_perl (pTHX_ struct coro *coro)
895 SvREFCNT_dec (GvSV (PL_errgv)); 1251{
896 SvREFCNT_dec (PL_defoutgv); 1252 SV *svf [9];
897 SvREFCNT_dec (PL_rs);
898 SvREFCNT_dec (GvSV (irsgv));
899 1253
900 SvREFCNT_dec (PL_diehook);
901 SvREFCNT_dec (PL_warnhook);
902 1254 {
1255 SV *old_current = SvRV (coro_current);
1256 struct coro *current = SvSTATE (old_current);
1257
1258 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1259
1260 save_perl (aTHX_ current);
1261
1262 /* this will cause transfer_check to croak on block*/
1263 SvRV_set (coro_current, (SV *)coro->hv);
1264
1265 load_perl (aTHX_ coro);
1266
1267 coro_unwind_stacks (aTHX);
1268
1269 /* restore swapped sv's */
1270 SWAP_SVS (coro);
1271
1272 coro_destruct_stacks (aTHX);
1273
1274 /* now save some sv's to be free'd later */
1275 svf [0] = GvSV (PL_defgv);
1276 svf [1] = (SV *)GvAV (PL_defgv);
1277 svf [2] = GvSV (PL_errgv);
1278 svf [3] = (SV *)PL_defoutgv;
1279 svf [4] = PL_rs;
1280 svf [5] = GvSV (irsgv);
1281 svf [6] = (SV *)GvHV (PL_hintgv);
1282 svf [7] = PL_diehook;
1283 svf [8] = PL_warnhook;
1284 assert (9 == sizeof (svf) / sizeof (*svf));
1285
1286 SvRV_set (coro_current, old_current);
1287
1288 load_perl (aTHX_ current);
1289 }
1290
1291 {
1292 unsigned int i;
1293
1294 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1295 SvREFCNT_dec (svf [i]);
1296
903 SvREFCNT_dec (coro->saved_deffh); 1297 SvREFCNT_dec (coro->saved_deffh);
904 SvREFCNT_dec (coro_throw); 1298 SvREFCNT_dec (coro->rouse_cb);
905 1299 SvREFCNT_dec (coro->invoke_cb);
906 coro_destruct_stacks (aTHX); 1300 SvREFCNT_dec (coro->invoke_av);
1301 SvREFCNT_dec (coro->on_enter_xs);
1302 SvREFCNT_dec (coro->on_leave_xs);
1303 }
907} 1304}
908 1305
909INLINE void 1306ecb_inline void
910free_coro_mortal (pTHX) 1307free_coro_mortal (pTHX)
911{ 1308{
912 if (expect_true (coro_mortal)) 1309 if (ecb_expect_true (coro_mortal))
913 { 1310 {
914 SvREFCNT_dec (coro_mortal); 1311 SvREFCNT_dec ((SV *)coro_mortal);
915 coro_mortal = 0; 1312 coro_mortal = 0;
916 } 1313 }
917} 1314}
918 1315
919static int 1316static int
920runops_trace (pTHX) 1317runops_trace (pTHX)
921{ 1318{
922 COP *oldcop = 0; 1319 COP *oldcop = 0;
923 int oldcxix = -2; 1320 int oldcxix = -2;
924 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
925 coro_cctx *cctx = coro->cctx;
926 1321
927 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1322 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
928 { 1323 {
929 PERL_ASYNC_CHECK (); 1324 PERL_ASYNC_CHECK ();
930 1325
931 if (cctx->flags & CC_TRACE_ALL) 1326 if (cctx_current->flags & CC_TRACE_ALL)
932 { 1327 {
933 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1328 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
934 { 1329 {
935 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1330 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
936 SV **bot, **top; 1331 SV **bot, **top;
937 AV *av = newAV (); /* return values */ 1332 AV *av = newAV (); /* return values */
938 SV **cb; 1333 SV **cb;
… …
975 1370
976 if (PL_curcop != &PL_compiling) 1371 if (PL_curcop != &PL_compiling)
977 { 1372 {
978 SV **cb; 1373 SV **cb;
979 1374
980 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1375 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
981 { 1376 {
982 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1377 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
983 1378
984 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1379 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
985 { 1380 {
986 runops_proc_t old_runops = PL_runops;
987 dSP; 1381 dSP;
988 GV *gv = CvGV (cx->blk_sub.cv); 1382 GV *gv = CvGV (cx->blk_sub.cv);
989 SV *fullname = sv_2mortal (newSV (0)); 1383 SV *fullname = sv_2mortal (newSV (0));
990 1384
991 if (isGV (gv)) 1385 if (isGV (gv))
… …
996 SAVETMPS; 1390 SAVETMPS;
997 EXTEND (SP, 3); 1391 EXTEND (SP, 3);
998 PUSHMARK (SP); 1392 PUSHMARK (SP);
999 PUSHs (&PL_sv_yes); 1393 PUSHs (&PL_sv_yes);
1000 PUSHs (fullname); 1394 PUSHs (fullname);
1001 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1395 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1002 PUTBACK; 1396 PUTBACK;
1003 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1397 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1004 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1398 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1005 SPAGAIN; 1399 SPAGAIN;
1006 FREETMPS; 1400 FREETMPS;
… …
1009 } 1403 }
1010 1404
1011 oldcxix = cxstack_ix; 1405 oldcxix = cxstack_ix;
1012 } 1406 }
1013 1407
1014 if (cctx->flags & CC_TRACE_LINE) 1408 if (cctx_current->flags & CC_TRACE_LINE)
1015 { 1409 {
1016 dSP; 1410 dSP;
1017 1411
1018 PL_runops = RUNOPS_DEFAULT; 1412 PL_runops = RUNOPS_DEFAULT;
1019 ENTER; 1413 ENTER;
… …
1038 1432
1039 TAINT_NOT; 1433 TAINT_NOT;
1040 return 0; 1434 return 0;
1041} 1435}
1042 1436
1437static struct CoroSLF cctx_ssl_frame;
1438
1043static void 1439static void
1044prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1440slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1045{ 1441{
1046 ta->prev = (struct coro *)cctx;
1047 ta->next = 0; 1442 ta->prev = 0;
1048} 1443}
1049 1444
1050/* inject a fake call to Coro::State::_cctx_init into the execution */ 1445static int
1051/* _cctx_init should be careful, as it could be called at almost any time */ 1446slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1052/* during execution of a perl program */
1053/* also initialises PL_top_env */
1054static void NOINLINE
1055cctx_prepare (pTHX_ coro_cctx *cctx)
1056{ 1447{
1057 dSP; 1448 *frame = cctx_ssl_frame;
1058 UNOP myop;
1059 1449
1450 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1451}
1452
1453/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1454static void ecb_noinline
1455cctx_prepare (pTHX)
1456{
1060 PL_top_env = &PL_start_env; 1457 PL_top_env = &PL_start_env;
1061 1458
1062 if (cctx->flags & CC_TRACE) 1459 if (cctx_current->flags & CC_TRACE)
1063 PL_runops = runops_trace; 1460 PL_runops = runops_trace;
1064 1461
1065 Zero (&myop, 1, UNOP); 1462 /* we already must be executing an SLF op, there is no other valid way
1066 myop.op_next = PL_op; 1463 * that can lead to creation of a new cctx */
1067 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1464 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1465 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1068 1466
1069 PUSHMARK (SP); 1467 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1070 EXTEND (SP, 2); 1468 cctx_ssl_frame = slf_frame;
1071 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1469
1072 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1470 slf_frame.prepare = slf_prepare_set_stacklevel;
1073 PUTBACK; 1471 slf_frame.check = slf_check_set_stacklevel;
1074 PL_op = (OP *)&myop;
1075 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1076 SPAGAIN;
1077} 1472}
1078 1473
1079/* the tail of transfer: execute stuff we can only do after a transfer */ 1474/* the tail of transfer: execute stuff we can only do after a transfer */
1080INLINE void 1475ecb_inline void
1081transfer_tail (pTHX) 1476transfer_tail (pTHX)
1082{ 1477{
1083 free_coro_mortal (aTHX); 1478 free_coro_mortal (aTHX);
1479}
1480
1481/* try to exit the same way perl's main function would do */
1482/* we do not bother resetting the environment or other things *7
1483/* that are not, uhm, essential */
1484/* this obviously also doesn't work when perl is embedded */
1485static void ecb_noinline ecb_cold
1486perlish_exit (pTHX)
1487{
1488 int exitstatus = perl_destruct (PL_curinterp);
1489 perl_free (PL_curinterp);
1490 exit (exitstatus);
1084} 1491}
1085 1492
1086/* 1493/*
1087 * this is a _very_ stripped down perl interpreter ;) 1494 * this is a _very_ stripped down perl interpreter ;)
1088 */ 1495 */
… …
1100 /* normally we would need to skip the entersub here */ 1507 /* normally we would need to skip the entersub here */
1101 /* not doing so will re-execute it, which is exactly what we want */ 1508 /* not doing so will re-execute it, which is exactly what we want */
1102 /* PL_nop = PL_nop->op_next */ 1509 /* PL_nop = PL_nop->op_next */
1103 1510
1104 /* inject a fake subroutine call to cctx_init */ 1511 /* inject a fake subroutine call to cctx_init */
1105 cctx_prepare (aTHX_ (coro_cctx *)arg); 1512 cctx_prepare (aTHX);
1106 1513
1107 /* cctx_run is the alternative tail of transfer() */ 1514 /* cctx_run is the alternative tail of transfer() */
1108 transfer_tail (aTHX); 1515 transfer_tail (aTHX);
1109 1516
1110 /* somebody or something will hit me for both perl_run and PL_restartop */ 1517 /* somebody or something will hit me for both perl_run and PL_restartop */
1111 PL_restartop = PL_op; 1518 PL_restartop = PL_op;
1112 perl_run (PL_curinterp); 1519 perl_run (PL_curinterp);
1520 /*
1521 * Unfortunately, there is no way to get at the return values of the
1522 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1523 * runtime errors here, as this is just a random interpreter, not a thread.
1524 */
1113 1525
1114 /* 1526 /*
1115 * If perl-run returns we assume exit() was being called or the coro 1527 * If perl-run returns we assume exit() was being called or the coro
1116 * fell off the end, which seems to be the only valid (non-bug) 1528 * fell off the end, which seems to be the only valid (non-bug)
1117 * reason for perl_run to return. We try to exit by jumping to the 1529 * reason for perl_run to return. We try to mimic whatever perl is normally
1118 * bootstrap-time "top" top_env, as we cannot restore the "main" 1530 * doing in that case. YMMV.
1119 * coroutine as Coro has no such concept
1120 */ 1531 */
1121 PL_top_env = main_top_env; 1532 perlish_exit (aTHX);
1122 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1123 } 1533 }
1124} 1534}
1125 1535
1126static coro_cctx * 1536static coro_cctx *
1127cctx_new () 1537cctx_new (void)
1128{ 1538{
1129 coro_cctx *cctx; 1539 coro_cctx *cctx;
1130 1540
1131 ++cctx_count; 1541 ++cctx_count;
1132 New (0, cctx, 1, coro_cctx); 1542 New (0, cctx, 1, coro_cctx);
… …
1138 return cctx; 1548 return cctx;
1139} 1549}
1140 1550
1141/* create a new cctx only suitable as source */ 1551/* create a new cctx only suitable as source */
1142static coro_cctx * 1552static coro_cctx *
1143cctx_new_empty () 1553cctx_new_empty (void)
1144{ 1554{
1145 coro_cctx *cctx = cctx_new (); 1555 coro_cctx *cctx = cctx_new ();
1146 1556
1147 cctx->sptr = 0; 1557 cctx->stack.sptr = 0;
1148 coro_create (&cctx->cctx, 0, 0, 0, 0); 1558 coro_create (&cctx->cctx, 0, 0, 0, 0);
1149 1559
1150 return cctx; 1560 return cctx;
1151} 1561}
1152 1562
1153/* create a new cctx suitable as destination/running a perl interpreter */ 1563/* create a new cctx suitable as destination/running a perl interpreter */
1154static coro_cctx * 1564static coro_cctx *
1155cctx_new_run () 1565cctx_new_run (void)
1156{ 1566{
1157 coro_cctx *cctx = cctx_new (); 1567 coro_cctx *cctx = cctx_new ();
1158 void *stack_start;
1159 size_t stack_size;
1160 1568
1161#if HAVE_MMAP 1569 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1162 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1163 /* mmap supposedly does allocate-on-write for us */
1164 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1165
1166 if (cctx->sptr != (void *)-1)
1167 {
1168 #if CORO_STACKGUARD
1169 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1170 #endif
1171 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1172 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1173 cctx->flags |= CC_MAPPED;
1174 } 1570 {
1175 else
1176#endif
1177 {
1178 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1179 New (0, cctx->sptr, cctx_stacksize, long);
1180
1181 if (!cctx->sptr)
1182 {
1183 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1571 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1184 _exit (EXIT_FAILURE); 1572 _exit (EXIT_FAILURE);
1185 }
1186
1187 stack_start = cctx->sptr;
1188 stack_size = cctx->ssize;
1189 } 1573 }
1190 1574
1191 #if CORO_USE_VALGRIND
1192 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1193 #endif
1194
1195 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1575 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1196 1576
1197 return cctx; 1577 return cctx;
1198} 1578}
1199 1579
1200static void 1580static void
1201cctx_destroy (coro_cctx *cctx) 1581cctx_destroy (coro_cctx *cctx)
1202{ 1582{
1203 if (!cctx) 1583 if (!cctx)
1204 return; 1584 return;
1205 1585
1586 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1587
1206 --cctx_count; 1588 --cctx_count;
1207 coro_destroy (&cctx->cctx); 1589 coro_destroy (&cctx->cctx);
1208 1590
1209 /* coro_transfer creates new, empty cctx's */ 1591 coro_stack_free (&cctx->stack);
1210 if (cctx->sptr)
1211 {
1212 #if CORO_USE_VALGRIND
1213 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1214 #endif
1215
1216#if HAVE_MMAP
1217 if (cctx->flags & CC_MAPPED)
1218 munmap (cctx->sptr, cctx->ssize);
1219 else
1220#endif
1221 Safefree (cctx->sptr);
1222 }
1223 1592
1224 Safefree (cctx); 1593 Safefree (cctx);
1225} 1594}
1226 1595
1227/* wether this cctx should be destructed */ 1596/* wether this cctx should be destructed */
1228#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1597#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1229 1598
1230static coro_cctx * 1599static coro_cctx *
1231cctx_get (pTHX) 1600cctx_get (pTHX)
1232{ 1601{
1233 while (expect_true (cctx_first)) 1602 while (ecb_expect_true (cctx_first))
1234 { 1603 {
1235 coro_cctx *cctx = cctx_first; 1604 coro_cctx *cctx = cctx_first;
1236 cctx_first = cctx->next; 1605 cctx_first = cctx->next;
1237 --cctx_idle; 1606 --cctx_idle;
1238 1607
1239 if (expect_true (!CCTX_EXPIRED (cctx))) 1608 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1240 return cctx; 1609 return cctx;
1241 1610
1242 cctx_destroy (cctx); 1611 cctx_destroy (cctx);
1243 } 1612 }
1244 1613
… …
1246} 1615}
1247 1616
1248static void 1617static void
1249cctx_put (coro_cctx *cctx) 1618cctx_put (coro_cctx *cctx)
1250{ 1619{
1251 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1620 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1252 1621
1253 /* free another cctx if overlimit */ 1622 /* free another cctx if overlimit */
1254 if (expect_false (cctx_idle >= cctx_max_idle)) 1623 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1255 { 1624 {
1256 coro_cctx *first = cctx_first; 1625 coro_cctx *first = cctx_first;
1257 cctx_first = first->next; 1626 cctx_first = first->next;
1258 --cctx_idle; 1627 --cctx_idle;
1259 1628
… …
1270static void 1639static void
1271transfer_check (pTHX_ struct coro *prev, struct coro *next) 1640transfer_check (pTHX_ struct coro *prev, struct coro *next)
1272{ 1641{
1273 /* TODO: throwing up here is considered harmful */ 1642 /* TODO: throwing up here is considered harmful */
1274 1643
1275 if (expect_true (prev != next)) 1644 if (ecb_expect_true (prev != next))
1276 { 1645 {
1277 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1646 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1278 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1647 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1279 1648
1280 if (expect_false (next->flags & CF_RUNNING)) 1649 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1281 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1282
1283 if (expect_false (next->flags & CF_DESTROYED))
1284 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1650 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1285 1651
1286#if !PERL_VERSION_ATLEAST (5,10,0) 1652#if !PERL_VERSION_ATLEAST (5,10,0)
1287 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1653 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1288 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1654 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1289#endif 1655#endif
1290 } 1656 }
1291} 1657}
1292 1658
1293/* always use the TRANSFER macro */ 1659/* always use the TRANSFER macro */
1294static void NOINLINE /* noinline so we have a fixed stackframe */ 1660static void ecb_noinline /* noinline so we have a fixed stackframe */
1295transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1661transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1296{ 1662{
1297 dSTACKLEVEL; 1663 dSTACKLEVEL;
1298 1664
1299 /* sometimes transfer is only called to set idle_sp */ 1665 /* sometimes transfer is only called to set idle_sp */
1300 if (expect_false (!next)) 1666 if (ecb_expect_false (!prev))
1301 { 1667 {
1302 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1668 cctx_current->idle_sp = STACKLEVEL;
1303 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1669 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1304 } 1670 }
1305 else if (expect_true (prev != next)) 1671 else if (ecb_expect_true (prev != next))
1306 { 1672 {
1307 coro_cctx *prev__cctx; 1673 coro_cctx *cctx_prev;
1308 1674
1309 if (expect_false (prev->flags & CF_NEW)) 1675 if (ecb_expect_false (prev->flags & CF_NEW))
1310 { 1676 {
1311 /* create a new empty/source context */ 1677 /* create a new empty/source context */
1312 prev->cctx = cctx_new_empty ();
1313 prev->flags &= ~CF_NEW; 1678 prev->flags &= ~CF_NEW;
1314 prev->flags |= CF_RUNNING; 1679 prev->flags |= CF_RUNNING;
1315 } 1680 }
1316 1681
1317 prev->flags &= ~CF_RUNNING; 1682 prev->flags &= ~CF_RUNNING;
1318 next->flags |= CF_RUNNING; 1683 next->flags |= CF_RUNNING;
1319 1684
1320 /* first get rid of the old state */ 1685 /* first get rid of the old state */
1321 save_perl (aTHX_ prev); 1686 save_perl (aTHX_ prev);
1322 1687
1323 if (expect_false (next->flags & CF_NEW)) 1688 if (ecb_expect_false (next->flags & CF_NEW))
1324 { 1689 {
1325 /* need to start coroutine */ 1690 /* need to start coroutine */
1326 next->flags &= ~CF_NEW; 1691 next->flags &= ~CF_NEW;
1327 /* setup coroutine call */ 1692 /* setup coroutine call */
1328 coro_setup (aTHX_ next); 1693 init_perl (aTHX_ next);
1329 } 1694 }
1330 else 1695 else
1331 load_perl (aTHX_ next); 1696 load_perl (aTHX_ next);
1332 1697
1333 prev__cctx = prev->cctx;
1334
1335 /* possibly untie and reuse the cctx */ 1698 /* possibly untie and reuse the cctx */
1336 if (expect_true ( 1699 if (ecb_expect_true (
1337 prev__cctx->idle_sp == (void *)stacklevel 1700 cctx_current->idle_sp == STACKLEVEL
1338 && !(prev__cctx->flags & CC_TRACE) 1701 && !(cctx_current->flags & CC_TRACE)
1339 && !force_cctx 1702 && !force_cctx
1340 )) 1703 ))
1341 { 1704 {
1342 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1705 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1343 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1706 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1344 1707
1345 prev->cctx = 0;
1346
1347 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1708 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1348 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1709 /* without this the next cctx_get might destroy the running cctx while still in use */
1349 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1710 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1350 if (!next->cctx) 1711 if (ecb_expect_true (!next->cctx))
1351 next->cctx = cctx_get (aTHX); 1712 next->cctx = cctx_get (aTHX);
1352 1713
1353 cctx_put (prev__cctx); 1714 cctx_put (cctx_current);
1354 } 1715 }
1716 else
1717 prev->cctx = cctx_current;
1355 1718
1356 ++next->usecount; 1719 ++next->usecount;
1357 1720
1358 if (expect_true (!next->cctx)) 1721 cctx_prev = cctx_current;
1359 next->cctx = cctx_get (aTHX); 1722 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1360 1723
1361 if (expect_false (prev__cctx != next->cctx)) 1724 next->cctx = 0;
1725
1726 if (ecb_expect_false (cctx_prev != cctx_current))
1362 { 1727 {
1363 prev__cctx->top_env = PL_top_env; 1728 cctx_prev->top_env = PL_top_env;
1364 PL_top_env = next->cctx->top_env; 1729 PL_top_env = cctx_current->top_env;
1365 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1730 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1366 } 1731 }
1367 1732
1368 transfer_tail (aTHX); 1733 transfer_tail (aTHX);
1369 } 1734 }
1370} 1735}
… …
1372#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1737#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1373#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1738#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1374 1739
1375/** high level stuff ********************************************************/ 1740/** high level stuff ********************************************************/
1376 1741
1742/* this function is actually Coro, not Coro::State, but we call it from here */
1743/* because it is convenient - but it hasn't been declared yet for that reason */
1377static int 1744static void
1745coro_call_on_destroy (pTHX_ struct coro *coro);
1746
1747static void
1378coro_state_destroy (pTHX_ struct coro *coro) 1748coro_state_destroy (pTHX_ struct coro *coro)
1379{ 1749{
1380 if (coro->flags & CF_DESTROYED) 1750 if (coro->flags & CF_ZOMBIE)
1381 return 0; 1751 return;
1382 1752
1383 if (coro->on_destroy)
1384 coro->on_destroy (aTHX_ coro); 1753 slf_destroy (aTHX_ coro);
1385 1754
1386 coro->flags |= CF_DESTROYED; 1755 coro->flags |= CF_ZOMBIE;
1387 1756
1388 if (coro->flags & CF_READY) 1757 if (coro->flags & CF_READY)
1389 { 1758 {
1390 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1759 /* reduce nready, as destroying a ready coro effectively unreadies it */
1391 /* alternative: look through all ready queues and remove the coro */ 1760 /* alternative: look through all ready queues and remove the coro */
1392 --coro_nready; 1761 --coro_nready;
1393 } 1762 }
1394 else 1763 else
1395 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1764 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1396 1765
1397 if (coro->mainstack && coro->mainstack != main_mainstack)
1398 {
1399 struct coro temp;
1400
1401 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1402
1403 save_perl (aTHX_ &temp);
1404 load_perl (aTHX_ coro);
1405
1406 coro_destruct (aTHX_ coro);
1407
1408 load_perl (aTHX_ &temp);
1409
1410 coro->slot = 0;
1411 }
1412
1413 cctx_destroy (coro->cctx);
1414 SvREFCNT_dec (coro->args);
1415
1416 if (coro->next) coro->next->prev = coro->prev; 1766 if (coro->next) coro->next->prev = coro->prev;
1417 if (coro->prev) coro->prev->next = coro->next; 1767 if (coro->prev) coro->prev->next = coro->next;
1418 if (coro == coro_first) coro_first = coro->next; 1768 if (coro == coro_first) coro_first = coro->next;
1419 1769
1420 return 1; 1770 if (coro->mainstack
1771 && coro->mainstack != main_mainstack
1772 && coro->slot
1773 && !PL_dirty)
1774 destroy_perl (aTHX_ coro);
1775
1776 cctx_destroy (coro->cctx);
1777 SvREFCNT_dec (coro->startcv);
1778 SvREFCNT_dec (coro->args);
1779 SvREFCNT_dec (coro->swap_sv);
1780 SvREFCNT_dec (CORO_THROW);
1781
1782 coro_call_on_destroy (aTHX_ coro);
1783
1784 /* more destruction mayhem in coro_state_free */
1421} 1785}
1422 1786
1423static int 1787static int
1424coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1788coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1425{ 1789{
1426 struct coro *coro = (struct coro *)mg->mg_ptr; 1790 struct coro *coro = (struct coro *)mg->mg_ptr;
1427 mg->mg_ptr = 0; 1791 mg->mg_ptr = 0;
1428 1792
1429 coro->hv = 0;
1430
1431 if (--coro->refcnt < 0)
1432 {
1433 coro_state_destroy (aTHX_ coro); 1793 coro_state_destroy (aTHX_ coro);
1794 SvREFCNT_dec (coro->on_destroy);
1795 SvREFCNT_dec (coro->status);
1796
1434 Safefree (coro); 1797 Safefree (coro);
1435 }
1436 1798
1437 return 0; 1799 return 0;
1438} 1800}
1439 1801
1440static int 1802static int ecb_cold
1441coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1803coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1442{ 1804{
1443 struct coro *coro = (struct coro *)mg->mg_ptr; 1805 /* called when perl clones the current process the slow way (windows process emulation) */
1444 1806 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1445 ++coro->refcnt; 1807 mg->mg_ptr = 0;
1808 mg->mg_virtual = 0;
1446 1809
1447 return 0; 1810 return 0;
1448} 1811}
1449 1812
1450static MGVTBL coro_state_vtbl = { 1813static MGVTBL coro_state_vtbl = {
… …
1475 TRANSFER (ta, 1); 1838 TRANSFER (ta, 1);
1476} 1839}
1477 1840
1478/** Coro ********************************************************************/ 1841/** Coro ********************************************************************/
1479 1842
1480INLINE void 1843ecb_inline void
1481coro_enq (pTHX_ struct coro *coro) 1844coro_enq (pTHX_ struct coro *coro)
1482{ 1845{
1483 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1846 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1484}
1485 1847
1486INLINE SV * 1848 SvREFCNT_inc_NN (coro->hv);
1849
1850 coro->next_ready = 0;
1851 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1852 ready [1] = coro;
1853}
1854
1855ecb_inline struct coro *
1487coro_deq (pTHX) 1856coro_deq (pTHX)
1488{ 1857{
1489 int prio; 1858 int prio;
1490 1859
1491 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1860 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1492 if (AvFILLp (coro_ready [prio]) >= 0) 1861 {
1493 return av_shift (coro_ready [prio]); 1862 struct coro **ready = coro_ready [prio];
1863
1864 if (ready [0])
1865 {
1866 struct coro *coro = ready [0];
1867 ready [0] = coro->next_ready;
1868 return coro;
1869 }
1870 }
1494 1871
1495 return 0; 1872 return 0;
1873}
1874
1875static void
1876invoke_sv_ready_hook_helper (void)
1877{
1878 dTHX;
1879 dSP;
1880
1881 ENTER;
1882 SAVETMPS;
1883
1884 PUSHMARK (SP);
1885 PUTBACK;
1886 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1887
1888 FREETMPS;
1889 LEAVE;
1496} 1890}
1497 1891
1498static int 1892static int
1499api_ready (pTHX_ SV *coro_sv) 1893api_ready (pTHX_ SV *coro_sv)
1500{ 1894{
1501 struct coro *coro;
1502 SV *sv_hook;
1503 void (*xs_hook)(void);
1504
1505 if (SvROK (coro_sv))
1506 coro_sv = SvRV (coro_sv);
1507
1508 coro = SvSTATE (coro_sv); 1895 struct coro *coro = SvSTATE (coro_sv);
1509 1896
1510 if (coro->flags & CF_READY) 1897 if (coro->flags & CF_READY)
1511 return 0; 1898 return 0;
1512 1899
1513 coro->flags |= CF_READY; 1900 coro->flags |= CF_READY;
1514 1901
1515 sv_hook = coro_nready ? 0 : coro_readyhook;
1516 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1517
1518 coro_enq (aTHX_ coro); 1902 coro_enq (aTHX_ coro);
1519 ++coro_nready;
1520 1903
1521 if (sv_hook) 1904 if (!coro_nready++)
1522 { 1905 if (coroapi.readyhook)
1523 dSP; 1906 coroapi.readyhook ();
1524
1525 ENTER;
1526 SAVETMPS;
1527
1528 PUSHMARK (SP);
1529 PUTBACK;
1530 call_sv (sv_hook, G_DISCARD);
1531 SPAGAIN;
1532
1533 FREETMPS;
1534 LEAVE;
1535 }
1536
1537 if (xs_hook)
1538 xs_hook ();
1539 1907
1540 return 1; 1908 return 1;
1541} 1909}
1542 1910
1543static int 1911static int
1544api_is_ready (pTHX_ SV *coro_sv) 1912api_is_ready (pTHX_ SV *coro_sv)
1545{ 1913{
1546 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1914 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1547} 1915}
1548 1916
1549INLINE void 1917/* expects to own a reference to next->hv */
1918ecb_inline void
1550prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1919prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1551{ 1920{
1552 SV *prev_sv, *next_sv;
1553
1554 for (;;)
1555 {
1556 next_sv = coro_deq (aTHX);
1557
1558 /* nothing to schedule: call the idle handler */
1559 if (expect_false (!next_sv))
1560 {
1561 dSP;
1562
1563 ENTER;
1564 SAVETMPS;
1565
1566 PUSHMARK (SP);
1567 PUTBACK;
1568 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1569 SPAGAIN;
1570
1571 FREETMPS;
1572 LEAVE;
1573 continue;
1574 }
1575
1576 ta->next = SvSTATE_hv (next_sv);
1577
1578 /* cannot transfer to destroyed coros, skip and look for next */
1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1580 {
1581 SvREFCNT_dec (next_sv);
1582 /* coro_nready has already been taken care of by destroy */
1583 continue;
1584 }
1585
1586 --coro_nready;
1587 break;
1588 }
1589
1590 /* free this only after the transfer */
1591 prev_sv = SvRV (coro_current); 1921 SV *prev_sv = SvRV (coro_current);
1922
1592 ta->prev = SvSTATE_hv (prev_sv); 1923 ta->prev = SvSTATE_hv (prev_sv);
1924 ta->next = next;
1925
1593 TRANSFER_CHECK (*ta); 1926 TRANSFER_CHECK (*ta);
1594 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1927
1595 ta->next->flags &= ~CF_READY;
1596 SvRV_set (coro_current, next_sv); 1928 SvRV_set (coro_current, (SV *)next->hv);
1597 1929
1598 free_coro_mortal (aTHX); 1930 free_coro_mortal (aTHX);
1599 coro_mortal = prev_sv; 1931 coro_mortal = prev_sv;
1600} 1932}
1601 1933
1602INLINE void 1934static void
1935prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1936{
1937 for (;;)
1938 {
1939 struct coro *next = coro_deq (aTHX);
1940
1941 if (ecb_expect_true (next))
1942 {
1943 /* cannot transfer to destroyed coros, skip and look for next */
1944 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1945 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1946 else
1947 {
1948 next->flags &= ~CF_READY;
1949 --coro_nready;
1950
1951 prepare_schedule_to (aTHX_ ta, next);
1952 break;
1953 }
1954 }
1955 else
1956 {
1957 /* nothing to schedule: call the idle handler */
1958 if (SvROK (sv_idle)
1959 && SvOBJECT (SvRV (sv_idle)))
1960 {
1961 if (SvRV (sv_idle) == SvRV (coro_current))
1962 {
1963 require_pv ("Carp");
1964
1965 {
1966 dSP;
1967
1968 ENTER;
1969 SAVETMPS;
1970
1971 PUSHMARK (SP);
1972 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
1973 PUTBACK;
1974 call_pv ("Carp::confess", G_VOID | G_DISCARD);
1975
1976 FREETMPS;
1977 LEAVE;
1978 }
1979 }
1980
1981 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1982 api_ready (aTHX_ SvRV (sv_idle));
1983 --coro_nready;
1984 }
1985 else
1986 {
1987 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1988 dSP;
1989
1990 ENTER;
1991 SAVETMPS;
1992
1993 PUSHMARK (SP);
1994 PUTBACK;
1995 call_sv (sv_idle, G_VOID | G_DISCARD);
1996
1997 FREETMPS;
1998 LEAVE;
1999 }
2000 }
2001 }
2002}
2003
2004ecb_inline void
1603prepare_cede (pTHX_ struct coro_transfer_args *ta) 2005prepare_cede (pTHX_ struct coro_transfer_args *ta)
1604{ 2006{
1605 api_ready (aTHX_ coro_current); 2007 api_ready (aTHX_ coro_current);
1606 prepare_schedule (aTHX_ ta); 2008 prepare_schedule (aTHX_ ta);
1607} 2009}
1608 2010
1609INLINE void 2011ecb_inline void
1610prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2012prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1611{ 2013{
1612 SV *prev = SvRV (coro_current); 2014 SV *prev = SvRV (coro_current);
1613 2015
1614 if (coro_nready) 2016 if (coro_nready)
… …
1627 2029
1628 prepare_schedule (aTHX_ &ta); 2030 prepare_schedule (aTHX_ &ta);
1629 TRANSFER (ta, 1); 2031 TRANSFER (ta, 1);
1630} 2032}
1631 2033
2034static void
2035api_schedule_to (pTHX_ SV *coro_sv)
2036{
2037 struct coro_transfer_args ta;
2038 struct coro *next = SvSTATE (coro_sv);
2039
2040 SvREFCNT_inc_NN (coro_sv);
2041 prepare_schedule_to (aTHX_ &ta, next);
2042}
2043
1632static int 2044static int
1633api_cede (pTHX) 2045api_cede (pTHX)
1634{ 2046{
1635 struct coro_transfer_args ta; 2047 struct coro_transfer_args ta;
1636 2048
1637 prepare_cede (aTHX_ &ta); 2049 prepare_cede (aTHX_ &ta);
1638 2050
1639 if (expect_true (ta.prev != ta.next)) 2051 if (ecb_expect_true (ta.prev != ta.next))
1640 { 2052 {
1641 TRANSFER (ta, 1); 2053 TRANSFER (ta, 1);
1642 return 1; 2054 return 1;
1643 } 2055 }
1644 else 2056 else
… …
1663static void 2075static void
1664api_trace (pTHX_ SV *coro_sv, int flags) 2076api_trace (pTHX_ SV *coro_sv, int flags)
1665{ 2077{
1666 struct coro *coro = SvSTATE (coro_sv); 2078 struct coro *coro = SvSTATE (coro_sv);
1667 2079
2080 if (coro->flags & CF_RUNNING)
2081 croak ("cannot enable tracing on a running coroutine, caught");
2082
1668 if (flags & CC_TRACE) 2083 if (flags & CC_TRACE)
1669 { 2084 {
1670 if (!coro->cctx) 2085 if (!coro->cctx)
1671 coro->cctx = cctx_new_run (); 2086 coro->cctx = cctx_new_run ();
1672 else if (!(coro->cctx->flags & CC_TRACE)) 2087 else if (!(coro->cctx->flags & CC_TRACE))
1673 croak ("cannot enable tracing on coroutine with custom stack,"); 2088 croak ("cannot enable tracing on coroutine with custom stack, caught");
1674 2089
1675 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2090 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1676 } 2091 }
1677 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2092 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1678 { 2093 {
… …
1681 if (coro->flags & CF_RUNNING) 2096 if (coro->flags & CF_RUNNING)
1682 PL_runops = RUNOPS_DEFAULT; 2097 PL_runops = RUNOPS_DEFAULT;
1683 else 2098 else
1684 coro->slot->runops = RUNOPS_DEFAULT; 2099 coro->slot->runops = RUNOPS_DEFAULT;
1685 } 2100 }
2101}
2102
2103static void
2104coro_push_av (pTHX_ AV *av, I32 gimme_v)
2105{
2106 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2107 {
2108 dSP;
2109
2110 if (gimme_v == G_SCALAR)
2111 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2112 else
2113 {
2114 int i;
2115 EXTEND (SP, AvFILLp (av) + 1);
2116
2117 for (i = 0; i <= AvFILLp (av); ++i)
2118 PUSHs (AvARRAY (av)[i]);
2119 }
2120
2121 PUTBACK;
2122 }
2123}
2124
2125static void
2126coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2127{
2128 if (!coro->on_destroy)
2129 coro->on_destroy = newAV ();
2130
2131 av_push (coro->on_destroy, cb);
2132}
2133
2134static void
2135slf_destroy_join (pTHX_ struct CoroSLF *frame)
2136{
2137 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2138}
2139
2140static int
2141slf_check_join (pTHX_ struct CoroSLF *frame)
2142{
2143 struct coro *coro = (struct coro *)frame->data;
2144
2145 if (!coro->status)
2146 return 1;
2147
2148 frame->destroy = 0;
2149
2150 coro_push_av (aTHX_ coro->status, GIMME_V);
2151
2152 SvREFCNT_dec ((SV *)coro->hv);
2153
2154 return 0;
2155}
2156
2157static void
2158slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2159{
2160 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2161
2162 if (items > 1)
2163 croak ("join called with too many arguments");
2164
2165 if (coro->status)
2166 frame->prepare = prepare_nop;
2167 else
2168 {
2169 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2170 frame->prepare = prepare_schedule;
2171 }
2172
2173 frame->check = slf_check_join;
2174 frame->destroy = slf_destroy_join;
2175 frame->data = (void *)coro;
2176 SvREFCNT_inc (coro->hv);
2177}
2178
2179static void
2180coro_call_on_destroy (pTHX_ struct coro *coro)
2181{
2182 AV *od = coro->on_destroy;
2183
2184 if (!od)
2185 return;
2186
2187 coro->on_destroy = 0;
2188 sv_2mortal ((SV *)od);
2189
2190 while (AvFILLp (od) >= 0)
2191 {
2192 SV *cb = sv_2mortal (av_pop (od));
2193
2194 /* coro hv's (and only hv's at the moment) are supported as well */
2195 if (SvSTATEhv_p (aTHX_ cb))
2196 api_ready (aTHX_ cb);
2197 else
2198 {
2199 dSP; /* don't disturb outer sp */
2200 PUSHMARK (SP);
2201
2202 if (coro->status)
2203 {
2204 PUTBACK;
2205 coro_push_av (aTHX_ coro->status, G_ARRAY);
2206 SPAGAIN;
2207 }
2208
2209 PUTBACK;
2210 call_sv (cb, G_VOID | G_DISCARD);
2211 }
2212 }
2213}
2214
2215static void
2216coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2217{
2218 AV *av;
2219
2220 if (coro->status)
2221 {
2222 av = coro->status;
2223 av_clear (av);
2224 }
2225 else
2226 av = coro->status = newAV ();
2227
2228 /* items are actually not so common, so optimise for this case */
2229 if (items)
2230 {
2231 int i;
2232
2233 av_extend (av, items - 1);
2234
2235 for (i = 0; i < items; ++i)
2236 av_push (av, SvREFCNT_inc_NN (arg [i]));
2237 }
2238}
2239
2240static void
2241slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2242{
2243 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2244 api_ready (aTHX_ sv_manager);
2245
2246 frame->prepare = prepare_schedule;
2247 frame->check = slf_check_repeat;
2248
2249 /* as a minor optimisation, we could unwind all stacks here */
2250 /* but that puts extra pressure on pp_slf, and is not worth much */
2251 /*coro_unwind_stacks (aTHX);*/
2252}
2253
2254static void
2255slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2256{
2257 HV *coro_hv = (HV *)SvRV (coro_current);
2258
2259 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2260 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2261}
2262
2263static void
2264slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2265{
2266 HV *coro_hv;
2267 struct coro *coro;
2268
2269 if (items <= 0)
2270 croak ("Coro::cancel called without coro object,");
2271
2272 coro = SvSTATE (arg [0]);
2273 coro_hv = coro->hv;
2274
2275 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2276
2277 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2278 {
2279 /* coro currently busy cancelling something, so just notify it */
2280 coro->slf_frame.data = (void *)coro;
2281
2282 frame->prepare = prepare_nop;
2283 frame->check = slf_check_nop;
2284 }
2285 else if (coro_hv == (HV *)SvRV (coro_current))
2286 {
2287 /* cancelling the current coro is allowed, and equals terminate */
2288 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2289 }
2290 else
2291 {
2292 struct coro *self = SvSTATE_current;
2293
2294 if (!self)
2295 croak ("Coro::cancel called outside of thread content,");
2296
2297 /* otherwise we cancel directly, purely for speed reasons
2298 * unfortunately, this requires some magic trickery, as
2299 * somebody else could cancel us, so we have to fight the cancellation.
2300 * this is ugly, and hopefully fully worth the extra speed.
2301 * besides, I can't get the slow-but-safe version working...
2302 */
2303 slf_frame.data = 0;
2304 self->flags |= CF_NOCANCEL;
2305 coro_state_destroy (aTHX_ coro);
2306 self->flags &= ~CF_NOCANCEL;
2307
2308 if (slf_frame.data)
2309 {
2310 /* while we were busy we have been cancelled, so terminate */
2311 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2312 }
2313 else
2314 {
2315 frame->prepare = prepare_nop;
2316 frame->check = slf_check_nop;
2317 }
2318 }
2319}
2320
2321static int
2322slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2323{
2324 frame->prepare = 0;
2325 coro_unwind_stacks (aTHX);
2326
2327 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2328
2329 return 1;
2330}
2331
2332static int
2333safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2334{
2335 if (coro->cctx)
2336 croak ("coro inside C callback, unable to cancel at this time, caught");
2337
2338 if (coro->flags & CF_NEW)
2339 {
2340 coro_set_status (aTHX_ coro, arg, items);
2341 coro_state_destroy (aTHX_ coro);
2342 }
2343 else
2344 {
2345 if (!coro->slf_frame.prepare)
2346 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2347
2348 slf_destroy (aTHX_ coro);
2349
2350 coro_set_status (aTHX_ coro, arg, items);
2351 coro->slf_frame.prepare = prepare_nop;
2352 coro->slf_frame.check = slf_check_safe_cancel;
2353
2354 api_ready (aTHX_ (SV *)coro->hv);
2355 }
2356
2357 return 1;
2358}
2359
2360/*****************************************************************************/
2361/* async pool handler */
2362
2363static int
2364slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2365{
2366 HV *hv = (HV *)SvRV (coro_current);
2367 struct coro *coro = (struct coro *)frame->data;
2368
2369 if (!coro->invoke_cb)
2370 return 1; /* loop till we have invoke */
2371 else
2372 {
2373 hv_store (hv, "desc", sizeof ("desc") - 1,
2374 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2375
2376 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2377
2378 {
2379 dSP;
2380 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2381 PUTBACK;
2382 }
2383
2384 SvREFCNT_dec (GvAV (PL_defgv));
2385 GvAV (PL_defgv) = coro->invoke_av;
2386 coro->invoke_av = 0;
2387
2388 return 0;
2389 }
2390}
2391
2392static void
2393slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2394{
2395 HV *hv = (HV *)SvRV (coro_current);
2396 struct coro *coro = SvSTATE_hv ((SV *)hv);
2397
2398 if (ecb_expect_true (coro->saved_deffh))
2399 {
2400 /* subsequent iteration */
2401 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2402 coro->saved_deffh = 0;
2403
2404 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2405 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2406 {
2407 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2408 return;
2409 }
2410 else
2411 {
2412 av_clear (GvAV (PL_defgv));
2413 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2414
2415 coro->prio = 0;
2416
2417 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2418 api_trace (aTHX_ coro_current, 0);
2419
2420 frame->prepare = prepare_schedule;
2421 av_push (av_async_pool, SvREFCNT_inc (hv));
2422 }
2423 }
2424 else
2425 {
2426 /* first iteration, simply fall through */
2427 frame->prepare = prepare_nop;
2428 }
2429
2430 frame->check = slf_check_pool_handler;
2431 frame->data = (void *)coro;
2432}
2433
2434/*****************************************************************************/
2435/* rouse callback */
2436
2437#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2438
2439static void
2440coro_rouse_callback (pTHX_ CV *cv)
2441{
2442 dXSARGS;
2443 SV *data = (SV *)S_GENSUB_ARG;
2444
2445 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2446 {
2447 /* first call, set args */
2448 SV *coro = SvRV (data);
2449 AV *av = newAV ();
2450
2451 SvRV_set (data, (SV *)av);
2452
2453 /* better take a full copy of the arguments */
2454 while (items--)
2455 av_store (av, items, newSVsv (ST (items)));
2456
2457 api_ready (aTHX_ coro);
2458 SvREFCNT_dec (coro);
2459 }
2460
2461 XSRETURN_EMPTY;
2462}
2463
2464static int
2465slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2466{
2467 SV *data = (SV *)frame->data;
2468
2469 if (CORO_THROW)
2470 return 0;
2471
2472 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2473 return 1;
2474
2475 /* now push all results on the stack */
2476 {
2477 dSP;
2478 AV *av = (AV *)SvRV (data);
2479 int i;
2480
2481 EXTEND (SP, AvFILLp (av) + 1);
2482 for (i = 0; i <= AvFILLp (av); ++i)
2483 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2484
2485 /* we have stolen the elements, so set length to zero and free */
2486 AvFILLp (av) = -1;
2487 av_undef (av);
2488
2489 PUTBACK;
2490 }
2491
2492 return 0;
2493}
2494
2495static void
2496slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2497{
2498 SV *cb;
2499
2500 if (items)
2501 cb = arg [0];
2502 else
2503 {
2504 struct coro *coro = SvSTATE_current;
2505
2506 if (!coro->rouse_cb)
2507 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2508
2509 cb = sv_2mortal (coro->rouse_cb);
2510 coro->rouse_cb = 0;
2511 }
2512
2513 if (!SvROK (cb)
2514 || SvTYPE (SvRV (cb)) != SVt_PVCV
2515 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2516 croak ("Coro::rouse_wait called with illegal callback argument,");
2517
2518 {
2519 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2520 SV *data = (SV *)S_GENSUB_ARG;
2521
2522 frame->data = (void *)data;
2523 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2524 frame->check = slf_check_rouse_wait;
2525 }
2526}
2527
2528static SV *
2529coro_new_rouse_cb (pTHX)
2530{
2531 HV *hv = (HV *)SvRV (coro_current);
2532 struct coro *coro = SvSTATE_hv (hv);
2533 SV *data = newRV_inc ((SV *)hv);
2534 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2535
2536 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2537 SvREFCNT_dec (data); /* magicext increases the refcount */
2538
2539 SvREFCNT_dec (coro->rouse_cb);
2540 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2541
2542 return cb;
1686} 2543}
1687 2544
1688/*****************************************************************************/ 2545/*****************************************************************************/
1689/* schedule-like-function opcode (SLF) */ 2546/* schedule-like-function opcode (SLF) */
1690 2547
… …
1714 2571
1715 RETURNOP (slf_restore.op_first); 2572 RETURNOP (slf_restore.op_first);
1716} 2573}
1717 2574
1718static void 2575static void
1719slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1720{
1721 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1722}
1723
1724static void
1725slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1726{
1727 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1728
1729 frame->prepare = slf_prepare_set_stacklevel;
1730 frame->check = slf_check_nop;
1731 frame->data = (void *)SvIV (arg [0]);
1732}
1733
1734static void
1735slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2576slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1736{ 2577{
1737 SV **arg = (SV **)slf_frame.data; 2578 SV **arg = (SV **)slf_frame.data;
1738 2579
1739 prepare_transfer (aTHX_ ta, arg [0], arg [1]); 2580 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
… …
1756 frame->prepare = prepare_schedule; 2597 frame->prepare = prepare_schedule;
1757 frame->check = slf_check_nop; 2598 frame->check = slf_check_nop;
1758} 2599}
1759 2600
1760static void 2601static void
2602slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2603{
2604 struct coro *next = (struct coro *)slf_frame.data;
2605
2606 SvREFCNT_inc_NN (next->hv);
2607 prepare_schedule_to (aTHX_ ta, next);
2608}
2609
2610static void
2611slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2612{
2613 if (!items)
2614 croak ("Coro::schedule_to expects a coroutine argument, caught");
2615
2616 frame->data = (void *)SvSTATE (arg [0]);
2617 frame->prepare = slf_prepare_schedule_to;
2618 frame->check = slf_check_nop;
2619}
2620
2621static void
2622slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2623{
2624 api_ready (aTHX_ SvRV (coro_current));
2625
2626 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2627}
2628
2629static void
1761slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2630slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1762{ 2631{
1763 frame->prepare = prepare_cede; 2632 frame->prepare = prepare_cede;
1764 frame->check = slf_check_nop; 2633 frame->check = slf_check_nop;
1765} 2634}
… …
1769{ 2638{
1770 frame->prepare = prepare_cede_notself; 2639 frame->prepare = prepare_cede_notself;
1771 frame->check = slf_check_nop; 2640 frame->check = slf_check_nop;
1772} 2641}
1773 2642
1774/* we hijack an hopefully unused CV flag for our purposes */ 2643/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
1775#define CVf_SLF 0x4000 2644static void
2645slf_destroy (pTHX_ struct coro *coro)
2646{
2647 struct CoroSLF frame = coro->slf_frame;
2648
2649 /*
2650 * The on_destroy below most likely is from an SLF call.
2651 * Since by definition the SLF call will not finish when we destroy
2652 * the coro, we will have to force-finish it here, otherwise
2653 * cleanup functions cannot call SLF functions.
2654 */
2655 coro->slf_frame.prepare = 0;
2656
2657 /* this callback is reserved for slf functions needing to do cleanup */
2658 if (frame.destroy && frame.prepare && !PL_dirty)
2659 frame.destroy (aTHX_ &frame);
2660}
1776 2661
1777/* 2662/*
1778 * these not obviously related functions are all rolled into one 2663 * these not obviously related functions are all rolled into one
1779 * function to increase chances that they all will call transfer with the same 2664 * function to increase chances that they all will call transfer with the same
1780 * stack offset 2665 * stack offset
… …
1786 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2671 I32 checkmark; /* mark SP to see how many elements check has pushed */
1787 2672
1788 /* set up the slf frame, unless it has already been set-up */ 2673 /* set up the slf frame, unless it has already been set-up */
1789 /* the latter happens when a new coro has been started */ 2674 /* the latter happens when a new coro has been started */
1790 /* or when a new cctx was attached to an existing coroutine */ 2675 /* or when a new cctx was attached to an existing coroutine */
1791 if (expect_true (!slf_frame.prepare)) 2676 if (ecb_expect_true (!slf_frame.prepare))
1792 { 2677 {
1793 /* first iteration */ 2678 /* first iteration */
1794 dSP; 2679 dSP;
1795 SV **arg = PL_stack_base + TOPMARK + 1; 2680 SV **arg = PL_stack_base + TOPMARK + 1;
1796 int items = SP - arg; /* args without function object */ 2681 int items = SP - arg; /* args without function object */
… …
1836 } 2721 }
1837 while (slf_frame.check (aTHX_ &slf_frame)); 2722 while (slf_frame.check (aTHX_ &slf_frame));
1838 2723
1839 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2724 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1840 2725
1841 /* return value handling - mostly like entersub */
1842 {
1843 dSP;
1844 SV **bot = PL_stack_base + checkmark;
1845 int gimme = GIMME_V;
1846
1847 /* make sure we put something on the stack in scalar context */
1848 if (gimme == G_SCALAR)
1849 {
1850 if (sp == bot)
1851 XPUSHs (&PL_sv_undef);
1852
1853 SP = bot + 1;
1854 }
1855
1856 PUTBACK;
1857 }
1858
1859 /* exception handling */ 2726 /* exception handling */
1860 if (expect_false (coro_throw)) 2727 if (ecb_expect_false (CORO_THROW))
1861 { 2728 {
1862 SV *exception = sv_2mortal (coro_throw); 2729 SV *exception = sv_2mortal (CORO_THROW);
1863 2730
1864 coro_throw = 0; 2731 CORO_THROW = 0;
1865 sv_setsv (ERRSV, exception); 2732 sv_setsv (ERRSV, exception);
1866 croak (0); 2733 croak (0);
2734 }
2735
2736 /* return value handling - mostly like entersub */
2737 /* make sure we put something on the stack in scalar context */
2738 if (GIMME_V == G_SCALAR
2739 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2740 {
2741 dSP;
2742 SV **bot = PL_stack_base + checkmark;
2743
2744 if (sp == bot) /* too few, push undef */
2745 bot [1] = &PL_sv_undef;
2746 else /* too many, take last one */
2747 bot [1] = *sp;
2748
2749 SP = bot + 1;
2750
2751 PUTBACK;
1867 } 2752 }
1868 2753
1869 return NORMAL; 2754 return NORMAL;
1870} 2755}
1871 2756
… …
1899 if (PL_op->op_flags & OPf_STACKED) 2784 if (PL_op->op_flags & OPf_STACKED)
1900 { 2785 {
1901 if (items > slf_arga) 2786 if (items > slf_arga)
1902 { 2787 {
1903 slf_arga = items; 2788 slf_arga = items;
1904 free (slf_argv); 2789 Safefree (slf_argv);
1905 slf_argv = malloc (slf_arga * sizeof (SV *)); 2790 New (0, slf_argv, slf_arga, SV *);
1906 } 2791 }
1907 2792
1908 slf_argc = items; 2793 slf_argc = items;
1909 2794
1910 for (i = 0; i < items; ++i) 2795 for (i = 0; i < items; ++i)
… …
1912 } 2797 }
1913 else 2798 else
1914 slf_argc = 0; 2799 slf_argc = 0;
1915 2800
1916 PL_op->op_ppaddr = pp_slf; 2801 PL_op->op_ppaddr = pp_slf;
1917 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2802 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1918 2803
1919 PL_op = (OP *)&slf_restore; 2804 PL_op = (OP *)&slf_restore;
2805}
2806
2807/*****************************************************************************/
2808/* dynamic wind */
2809
2810static void
2811on_enterleave_call (pTHX_ SV *cb)
2812{
2813 dSP;
2814
2815 PUSHSTACK;
2816
2817 PUSHMARK (SP);
2818 PUTBACK;
2819 call_sv (cb, G_VOID | G_DISCARD);
2820 SPAGAIN;
2821
2822 POPSTACK;
2823}
2824
2825static SV *
2826coro_avp_pop_and_free (pTHX_ AV **avp)
2827{
2828 AV *av = *avp;
2829 SV *res = av_pop (av);
2830
2831 if (AvFILLp (av) < 0)
2832 {
2833 *avp = 0;
2834 SvREFCNT_dec (av);
2835 }
2836
2837 return res;
2838}
2839
2840static void
2841coro_pop_on_enter (pTHX_ void *coro)
2842{
2843 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2844 SvREFCNT_dec (cb);
2845}
2846
2847static void
2848coro_pop_on_leave (pTHX_ void *coro)
2849{
2850 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2851 on_enterleave_call (aTHX_ sv_2mortal (cb));
2852}
2853
2854static void
2855enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2856{
2857 if (!hook)
2858 return;
2859
2860 if (!*avp)
2861 {
2862 *avp = newAV ();
2863 AvREAL_off (*avp);
2864 }
2865
2866 av_push (*avp, (SV *)hook);
2867 av_push (*avp, (SV *)arg);
2868}
2869
2870static void
2871enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2872{
2873 AV *av = *avp;
2874 int i;
2875
2876 if (!av)
2877 return;
2878
2879 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2880 if (AvARRAY (av)[i] == (SV *)hook)
2881 {
2882 if (execute)
2883 hook ((void *)AvARRAY (av)[i + 1]);
2884
2885 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2886 av_pop (av);
2887 av_pop (av);
2888 break;
2889 }
2890
2891 if (AvFILLp (av) >= 0)
2892 {
2893 *avp = 0;
2894 SvREFCNT_dec_NN (av);
2895 }
2896}
2897
2898static void
2899api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2900{
2901 struct coro *coro = SvSTATE (coro_sv);
2902
2903 if (SvSTATE_current == coro)
2904 if (enter)
2905 enter (aTHX enter_arg);
2906
2907 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2908 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2909}
2910
2911static void
2912api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2913{
2914 struct coro *coro = SvSTATE (coro_sv);
2915
2916 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2917 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2918}
2919
2920static void
2921savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2922{
2923 struct coro *coro = SvSTATE_current;
2924
2925 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2926}
2927
2928static void
2929savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2930{
2931 struct coro *coro = SvSTATE_current;
2932
2933 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2934}
2935
2936static void
2937api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2938{
2939 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2940
2941 /* this ought to be much cheaper than malloc + a single destructor call */
2942 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2943 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
1920} 2944}
1921 2945
1922/*****************************************************************************/ 2946/*****************************************************************************/
1923/* PerlIO::cede */ 2947/* PerlIO::cede */
1924 2948
… …
1926{ 2950{
1927 PerlIOBuf base; 2951 PerlIOBuf base;
1928 NV next, every; 2952 NV next, every;
1929} PerlIOCede; 2953} PerlIOCede;
1930 2954
1931static IV 2955static IV ecb_cold
1932PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2956PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1933{ 2957{
1934 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2958 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1935 2959
1936 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2960 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1937 self->next = nvtime () + self->every; 2961 self->next = nvtime () + self->every;
1938 2962
1939 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2963 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1940} 2964}
1941 2965
1942static SV * 2966static SV * ecb_cold
1943PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2967PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1944{ 2968{
1945 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2969 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1946 2970
1947 return newSVnv (self->every); 2971 return newSVnv (self->every);
… …
1993 PerlIOBuf_get_cnt, 3017 PerlIOBuf_get_cnt,
1994 PerlIOBuf_set_ptrcnt, 3018 PerlIOBuf_set_ptrcnt,
1995}; 3019};
1996 3020
1997/*****************************************************************************/ 3021/*****************************************************************************/
3022/* Coro::Semaphore & Coro::Signal */
3023
3024static SV *
3025coro_waitarray_new (pTHX_ int count)
3026{
3027 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3028 AV *av = newAV ();
3029 SV **ary;
3030
3031 /* unfortunately, building manually saves memory */
3032 Newx (ary, 2, SV *);
3033 AvALLOC (av) = ary;
3034#if PERL_VERSION_ATLEAST (5,10,0)
3035 AvARRAY (av) = ary;
3036#else
3037 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3038 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3039 SvPVX ((SV *)av) = (char *)ary;
3040#endif
3041 AvMAX (av) = 1;
3042 AvFILLp (av) = 0;
3043 ary [0] = newSViv (count);
3044
3045 return newRV_noinc ((SV *)av);
3046}
3047
1998/* Coro::Semaphore */ 3048/* semaphore */
1999 3049
2000static void 3050static void
2001coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 3051coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2002{ 3052{
2003 SV *count_sv = AvARRAY (av)[0]; 3053 SV *count_sv = AvARRAY (av)[0];
… …
2015 AvARRAY (av)[0] = AvARRAY (av)[1]; 3065 AvARRAY (av)[0] = AvARRAY (av)[1];
2016 AvARRAY (av)[1] = count_sv; 3066 AvARRAY (av)[1] = count_sv;
2017 cb = av_shift (av); 3067 cb = av_shift (av);
2018 3068
2019 if (SvOBJECT (cb)) 3069 if (SvOBJECT (cb))
3070 {
2020 api_ready (aTHX_ cb); 3071 api_ready (aTHX_ cb);
2021 else 3072 --count;
2022 croak ("callbacks not yet supported"); 3073 }
3074 else if (SvTYPE (cb) == SVt_PVCV)
3075 {
3076 dSP;
3077 PUSHMARK (SP);
3078 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3079 PUTBACK;
3080 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3081 }
2023 3082
2024 SvREFCNT_dec (cb); 3083 SvREFCNT_dec_NN (cb);
2025
2026 --count;
2027 } 3084 }
2028} 3085}
2029 3086
2030static void 3087static void
2031coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3088coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2032{ 3089{
2033 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3090 /* call $sem->adjust (0) to possibly wake up some other waiters */
2034 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3091 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2035} 3092}
2036 3093
2037static int 3094static int
2038slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3095slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2039{ 3096{
2040 AV *av = (AV *)frame->data; 3097 AV *av = (AV *)frame->data;
2041 SV *count_sv = AvARRAY (av)[0]; 3098 SV *count_sv = AvARRAY (av)[0];
3099 SV *coro_hv = SvRV (coro_current);
2042 3100
3101 frame->destroy = 0;
3102
3103 /* if we are about to throw, don't actually acquire the lock, just throw */
3104 if (ecb_expect_false (CORO_THROW))
3105 {
3106 /* we still might be responsible for the semaphore, so wake up others */
3107 coro_semaphore_adjust (aTHX_ av, 0);
3108
3109 return 0;
3110 }
2043 if (SvIVX (count_sv) > 0) 3111 else if (SvIVX (count_sv) > 0)
2044 { 3112 {
2045 SvSTATE_current->on_destroy = 0; 3113 if (acquire)
2046 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3114 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3115 else
3116 coro_semaphore_adjust (aTHX_ av, 0);
3117
2047 return 0; 3118 return 0;
2048 } 3119 }
2049 else 3120 else
2050 { 3121 {
2051 int i; 3122 int i;
2052 /* if we were woken up but can't down, we look through the whole */ 3123 /* if we were woken up but can't down, we look through the whole */
2053 /* waiters list and only add us if we aren't in there already */ 3124 /* waiters list and only add us if we aren't in there already */
2054 /* this avoids some degenerate memory usage cases */ 3125 /* this avoids some degenerate memory usage cases */
2055 3126 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2056 for (i = 1; i <= AvFILLp (av); ++i)
2057 if (AvARRAY (av)[i] == SvRV (coro_current)) 3127 if (AvARRAY (av)[i] == coro_hv)
2058 return 1; 3128 return 1;
2059 3129
2060 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3130 av_push (av, SvREFCNT_inc (coro_hv));
2061 return 1; 3131 return 1;
2062 } 3132 }
2063} 3133}
2064 3134
2065static void 3135static int
3136slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3137{
3138 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3139}
3140
3141static int
3142slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3143{
3144 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3145}
3146
3147static void
2066slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3148slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2067{ 3149{
2068 AV *av = (AV *)SvRV (arg [0]); 3150 AV *av = (AV *)SvRV (arg [0]);
2069 3151
2070 if (SvIVX (AvARRAY (av)[0]) > 0) 3152 if (SvIVX (AvARRAY (av)[0]) > 0)
2071 { 3153 {
2072 frame->data = (void *)av; 3154 frame->data = (void *)av;
2073 frame->prepare = prepare_nop; 3155 frame->prepare = prepare_nop;
2074 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2075 } 3156 }
2076 else 3157 else
2077 { 3158 {
2078 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3159 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2079 3160
2080 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3161 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2081 frame->prepare = prepare_schedule; 3162 frame->prepare = prepare_schedule;
2082
2083 /* to avoid race conditions when a woken-up coro gets terminated */ 3163 /* to avoid race conditions when a woken-up coro gets terminated */
2084 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3164 /* we arrange for a temporary on_destroy that calls adjust (0) */
2085 assert (!SvSTATE_current->on_destroy);//D
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3165 frame->destroy = coro_semaphore_destroy;
2087 } 3166 }
3167}
2088 3168
3169static void
3170slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3171{
3172 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2089 frame->check = slf_check_semaphore_down; 3173 frame->check = slf_check_semaphore_down;
2090
2091} 3174}
2092 3175
2093/*****************************************************************************/ 3176static void
2094/* gensub: simple closure generation utility */ 3177slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2095
2096#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2097
2098/* create a closure from XS, returns a code reference */
2099/* the arg can be accessed via GENSUB_ARG from the callback */
2100/* the callback must use dXSARGS/XSRETURN */
2101static SV *
2102gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2103{ 3178{
2104 CV *cv = (CV *)newSV (0); 3179 if (items >= 2)
3180 {
3181 /* callback form */
3182 AV *av = (AV *)SvRV (arg [0]);
3183 SV *cb_cv = s_get_cv_croak (arg [1]);
2105 3184
2106 sv_upgrade ((SV *)cv, SVt_PVCV); 3185 av_push (av, SvREFCNT_inc_NN (cb_cv));
2107 3186
2108 CvANON_on (cv); 3187 if (SvIVX (AvARRAY (av)[0]) > 0)
2109 CvISXSUB_on (cv); 3188 coro_semaphore_adjust (aTHX_ av, 0);
2110 CvXSUB (cv) = xsub;
2111 GENSUB_ARG = arg;
2112 3189
2113 return newRV_noinc ((SV *)cv); 3190 frame->prepare = prepare_nop;
3191 frame->check = slf_check_nop;
3192 }
3193 else
3194 {
3195 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3196 frame->check = slf_check_semaphore_wait;
3197 }
3198}
3199
3200/* signal */
3201
3202static void
3203coro_signal_wake (pTHX_ AV *av, int count)
3204{
3205 SvIVX (AvARRAY (av)[0]) = 0;
3206
3207 /* now signal count waiters */
3208 while (count > 0 && AvFILLp (av) > 0)
3209 {
3210 SV *cb;
3211
3212 /* swap first two elements so we can shift a waiter */
3213 cb = AvARRAY (av)[0];
3214 AvARRAY (av)[0] = AvARRAY (av)[1];
3215 AvARRAY (av)[1] = cb;
3216
3217 cb = av_shift (av);
3218
3219 if (SvTYPE (cb) == SVt_PVCV)
3220 {
3221 dSP;
3222 PUSHMARK (SP);
3223 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3224 PUTBACK;
3225 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3226 }
3227 else
3228 {
3229 api_ready (aTHX_ cb);
3230 sv_setiv (cb, 0); /* signal waiter */
3231 }
3232
3233 SvREFCNT_dec_NN (cb);
3234
3235 --count;
3236 }
3237}
3238
3239static int
3240slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3241{
3242 /* if we are about to throw, also stop waiting */
3243 return SvROK ((SV *)frame->data) && !CORO_THROW;
3244}
3245
3246static void
3247slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3248{
3249 AV *av = (AV *)SvRV (arg [0]);
3250
3251 if (items >= 2)
3252 {
3253 SV *cb_cv = s_get_cv_croak (arg [1]);
3254 av_push (av, SvREFCNT_inc_NN (cb_cv));
3255
3256 if (SvIVX (AvARRAY (av)[0]))
3257 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3258
3259 frame->prepare = prepare_nop;
3260 frame->check = slf_check_nop;
3261 }
3262 else if (SvIVX (AvARRAY (av)[0]))
3263 {
3264 SvIVX (AvARRAY (av)[0]) = 0;
3265 frame->prepare = prepare_nop;
3266 frame->check = slf_check_nop;
3267 }
3268 else
3269 {
3270 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3271
3272 av_push (av, waiter);
3273
3274 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3275 frame->prepare = prepare_schedule;
3276 frame->check = slf_check_signal_wait;
3277 }
2114} 3278}
2115 3279
2116/*****************************************************************************/ 3280/*****************************************************************************/
2117/* Coro::AIO */ 3281/* Coro::AIO */
2118 3282
… …
2129 3293
2130static void 3294static void
2131coro_aio_callback (pTHX_ CV *cv) 3295coro_aio_callback (pTHX_ CV *cv)
2132{ 3296{
2133 dXSARGS; 3297 dXSARGS;
2134 AV *state = (AV *)GENSUB_ARG; 3298 AV *state = (AV *)S_GENSUB_ARG;
2135 SV *coro = av_pop (state); 3299 SV *coro = av_pop (state);
2136 SV *data_sv = newSV (sizeof (struct io_state)); 3300 SV *data_sv = newSV (sizeof (struct io_state));
2137 3301
2138 av_extend (state, items); 3302 av_extend (state, items - 1);
2139 3303
2140 sv_upgrade (data_sv, SVt_PV); 3304 sv_upgrade (data_sv, SVt_PV);
2141 SvCUR_set (data_sv, sizeof (struct io_state)); 3305 SvCUR_set (data_sv, sizeof (struct io_state));
2142 SvPOK_only (data_sv); 3306 SvPOK_only (data_sv);
2143 3307
… …
2159 } 3323 }
2160 3324
2161 av_push (state, data_sv); 3325 av_push (state, data_sv);
2162 3326
2163 api_ready (aTHX_ coro); 3327 api_ready (aTHX_ coro);
2164 SvREFCNT_dec (coro); 3328 SvREFCNT_dec_NN (coro);
2165 SvREFCNT_dec ((AV *)state); 3329 SvREFCNT_dec_NN ((AV *)state);
2166} 3330}
2167 3331
2168static int 3332static int
2169slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3333slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2170{ 3334{
2171 AV *state = (AV *)frame->data; 3335 AV *state = (AV *)frame->data;
2172 3336
3337 /* if we are about to throw, return early */
3338 /* this does not cancel the aio request, but at least */
3339 /* it quickly returns */
3340 if (CORO_THROW)
3341 return 0;
3342
2173 /* one element that is an RV? repeat! */ 3343 /* one element that is an RV? repeat! */
2174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3344 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2175 return 1; 3345 return 1;
2176 3346
2177 /* restore status */ 3347 /* restore status */
2178 { 3348 {
2179 SV *data_sv = av_pop (state); 3349 SV *data_sv = av_pop (state);
… …
2182 errno = data->errorno; 3352 errno = data->errorno;
2183 PL_laststype = data->laststype; 3353 PL_laststype = data->laststype;
2184 PL_laststatval = data->laststatval; 3354 PL_laststatval = data->laststatval;
2185 PL_statcache = data->statcache; 3355 PL_statcache = data->statcache;
2186 3356
2187 SvREFCNT_dec (data_sv); 3357 SvREFCNT_dec_NN (data_sv);
2188 } 3358 }
2189 3359
2190 /* push result values */ 3360 /* push result values */
2191 { 3361 {
2192 dSP; 3362 dSP;
… …
2218 dSP; 3388 dSP;
2219 3389
2220 static SV *prio_cv; 3390 static SV *prio_cv;
2221 static SV *prio_sv; 3391 static SV *prio_sv;
2222 3392
2223 if (expect_false (!prio_cv)) 3393 if (ecb_expect_false (!prio_cv))
2224 { 3394 {
2225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3395 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2226 prio_sv = newSViv (0); 3396 prio_sv = newSViv (0);
2227 } 3397 }
2228 3398
… …
2247 3417
2248 for (i = 0; i < items; ++i) 3418 for (i = 0; i < items; ++i)
2249 PUSHs (arg [i]); 3419 PUSHs (arg [i]);
2250 3420
2251 /* now push the callback closure */ 3421 /* now push the callback closure */
2252 PUSHs (sv_2mortal (gensub (coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3422 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2253 3423
2254 /* now call the AIO function - we assume our request is uncancelable */ 3424 /* now call the AIO function - we assume our request is uncancelable */
2255 PUTBACK; 3425 PUTBACK;
2256 call_sv ((SV *)req, G_VOID | G_DISCARD); 3426 call_sv ((SV *)req, G_VOID | G_DISCARD);
2257 } 3427 }
2258 3428
2259 /* now that the requets is going, we loop toll we have a result */ 3429 /* now that the request is going, we loop till we have a result */
2260 frame->data = (void *)state; 3430 frame->data = (void *)state;
2261 frame->prepare = prepare_schedule; 3431 frame->prepare = prepare_schedule;
2262 frame->check = slf_check_aio_req; 3432 frame->check = slf_check_aio_req;
2263} 3433}
2264 3434
2265static void 3435static void
2266coro_aio_req_xs (pTHX_ CV *cv) 3436coro_aio_req_xs (pTHX_ CV *cv)
2267{ 3437{
2268 dVAR;
2269 dXSARGS; 3438 dXSARGS;
2270 3439
2271 CORO_EXECUTE_SLF_XS (slf_init_aio_req); 3440 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2272 3441
2273 XSRETURN_EMPTY; 3442 XSRETURN_EMPTY;
2274} 3443}
2275 3444
2276/*****************************************************************************/ 3445/*****************************************************************************/
2277 3446
3447#if CORO_CLONE
3448# include "clone.c"
3449#endif
3450
3451/*****************************************************************************/
3452
3453static SV *
3454coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3455{
3456 SV *coro_sv;
3457 struct coro *coro;
3458 MAGIC *mg;
3459 HV *hv;
3460 SV *cb;
3461 int i;
3462
3463 if (argc > 0)
3464 {
3465 cb = s_get_cv_croak (argv [0]);
3466
3467 if (!is_coro)
3468 {
3469 if (CvISXSUB (cb))
3470 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3471
3472 if (!CvROOT (cb))
3473 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3474 }
3475 }
3476
3477 Newz (0, coro, 1, struct coro);
3478 coro->args = newAV ();
3479 coro->flags = CF_NEW;
3480
3481 if (coro_first) coro_first->prev = coro;
3482 coro->next = coro_first;
3483 coro_first = coro;
3484
3485 coro->hv = hv = newHV ();
3486 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3487 mg->mg_flags |= MGf_DUP;
3488 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3489
3490 if (argc > 0)
3491 {
3492 av_extend (coro->args, argc + is_coro - 1);
3493
3494 if (is_coro)
3495 {
3496 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3497 cb = (SV *)cv_coro_run;
3498 }
3499
3500 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3501
3502 for (i = 1; i < argc; i++)
3503 av_push (coro->args, newSVsv (argv [i]));
3504 }
3505
3506 return coro_sv;
3507}
3508
3509#ifndef __cplusplus
3510ecb_cold XS(boot_Coro__State);
3511#endif
3512
3513#if CORO_JIT
3514
3515static void ecb_noinline ecb_cold
3516pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3517{
3518 dSP;
3519 AV *av = newAV ();
3520
3521 av_store (av, 3, newSVuv (d));
3522 av_store (av, 2, newSVuv (c));
3523 av_store (av, 1, newSVuv (b));
3524 av_store (av, 0, newSVuv (a));
3525
3526 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3527
3528 PUTBACK;
3529}
3530
3531static void ecb_noinline ecb_cold
3532jit_init (pTHX)
3533{
3534 dSP;
3535 SV *load, *save;
3536 char *map_base;
3537 char *load_ptr, *save_ptr;
3538 STRLEN load_len, save_len, map_len;
3539 int count;
3540
3541 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3542
3543 PUSHMARK (SP);
3544 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3545 #include "state.h"
3546 count = call_pv ("Coro::State::_jit", G_ARRAY);
3547 SPAGAIN;
3548
3549 save = POPs; save_ptr = SvPVbyte (save, save_len);
3550 load = POPs; load_ptr = SvPVbyte (load, load_len);
3551
3552 map_len = load_len + save_len + 16;
3553
3554 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3555
3556 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3557
3558 load_perl_slots = (load_save_perl_slots_type)map_base;
3559 memcpy (map_base, load_ptr, load_len);
3560
3561 map_base += (load_len + 15) & ~15;
3562
3563 save_perl_slots = (load_save_perl_slots_type)map_base;
3564 memcpy (map_base, save_ptr, save_len);
3565
3566 /* we are good citizens and try to make the page read-only, so the evil evil */
3567 /* hackers might have it a bit more difficult */
3568 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3569
3570 PUTBACK;
3571 eval_pv ("undef &Coro::State::_jit", 1);
3572}
3573
3574#endif
3575
2278MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3576MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2279 3577
2280PROTOTYPES: DISABLE 3578PROTOTYPES: DISABLE
2281 3579
2282BOOT: 3580BOOT:
2283{ 3581{
3582#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3583#include "state.h"
2284#ifdef USE_ITHREADS 3584#ifdef USE_ITHREADS
2285# if CORO_PTHREAD 3585# if CORO_PTHREAD
2286 coro_thx = PERL_GET_CONTEXT; 3586 coro_thx = PERL_GET_CONTEXT;
2287# endif 3587# endif
2288#endif 3588#endif
2289 BOOT_PAGESIZE; 3589 /* perl defines these to check for existance first, but why it doesn't */
3590 /* just create them one at init time is not clear to me, except for */
3591 /* programs trying to delete them, but... */
3592 /* anyway, we declare this as invalid and make sure they are initialised here */
3593 DEFSV;
3594 ERRSV;
3595
3596 cctx_current = cctx_new_empty ();
2290 3597
2291 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3598 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2292 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3599 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2293 3600
2294 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3601 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2314 3621
2315 { 3622 {
2316 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3623 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2317 3624
2318 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3625 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2319 hv_store_ent (PL_custom_op_names, slf, 3626 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2320 newSVpv ("coro_slf", 0), 0);
2321 3627
2322 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3628 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2323 hv_store_ent (PL_custom_op_descs, slf, 3629 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2324 newSVpv ("coro schedule like function", 0), 0);
2325 } 3630 }
2326 3631
2327 coroapi.ver = CORO_API_VERSION; 3632 coroapi.ver = CORO_API_VERSION;
2328 coroapi.rev = CORO_API_REVISION; 3633 coroapi.rev = CORO_API_REVISION;
2329 3634
… …
2334 coroapi.prepare_nop = prepare_nop; 3639 coroapi.prepare_nop = prepare_nop;
2335 coroapi.prepare_schedule = prepare_schedule; 3640 coroapi.prepare_schedule = prepare_schedule;
2336 coroapi.prepare_cede = prepare_cede; 3641 coroapi.prepare_cede = prepare_cede;
2337 coroapi.prepare_cede_notself = prepare_cede_notself; 3642 coroapi.prepare_cede_notself = prepare_cede_notself;
2338 3643
2339 { 3644 time_init (aTHX);
2340 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2341 3645
2342 if (!svp) croak ("Time::HiRes is required");
2343 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2344
2345 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2346 }
2347
2348 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3646 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3647#if CORO_JIT
3648 PUTBACK;
3649 jit_init (aTHX);
3650 SPAGAIN;
3651#endif
2349} 3652}
2350 3653
2351SV * 3654SV *
2352new (char *klass, ...) 3655new (SV *klass, ...)
3656 ALIAS:
3657 Coro::new = 1
2353 CODE: 3658 CODE:
2354{ 3659 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2355 struct coro *coro; 3660 OUTPUT:
2356 MAGIC *mg;
2357 HV *hv;
2358 int i;
2359
2360 Newz (0, coro, 1, struct coro);
2361 coro->args = newAV ();
2362 coro->flags = CF_NEW;
2363
2364 if (coro_first) coro_first->prev = coro;
2365 coro->next = coro_first;
2366 coro_first = coro;
2367
2368 coro->hv = hv = newHV ();
2369 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2370 mg->mg_flags |= MGf_DUP;
2371 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2372
2373 av_extend (coro->args, items - 1);
2374 for (i = 1; i < items; i++)
2375 av_push (coro->args, newSVsv (ST (i)));
2376}
2377 OUTPUT:
2378 RETVAL 3661 RETVAL
2379
2380void
2381_set_stacklevel (...)
2382 CODE:
2383 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2384 3662
2385void 3663void
2386transfer (...) 3664transfer (...)
2387 PROTOTYPE: $$ 3665 PROTOTYPE: $$
2388 CODE: 3666 CODE:
2389 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3667 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2390 3668
2391bool 3669SV *
2392_destroy (SV *coro_sv) 3670clone (Coro::State coro)
2393 CODE: 3671 CODE:
2394 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3672{
3673#if CORO_CLONE
3674 struct coro *ncoro = coro_clone (aTHX_ coro);
3675 MAGIC *mg;
3676 /* TODO: too much duplication */
3677 ncoro->hv = newHV ();
3678 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3679 mg->mg_flags |= MGf_DUP;
3680 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3681#else
3682 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3683#endif
3684}
2395 OUTPUT: 3685 OUTPUT:
2396 RETVAL 3686 RETVAL
2397
2398void
2399_exit (int code)
2400 PROTOTYPE: $
2401 CODE:
2402 _exit (code);
2403 3687
2404int 3688int
2405cctx_stacksize (int new_stacksize = 0) 3689cctx_stacksize (int new_stacksize = 0)
2406 PROTOTYPE: ;$ 3690 PROTOTYPE: ;$
2407 CODE: 3691 CODE:
… …
2443void 3727void
2444list () 3728list ()
2445 PROTOTYPE: 3729 PROTOTYPE:
2446 PPCODE: 3730 PPCODE:
2447{ 3731{
2448 struct coro *coro; 3732 struct coro *coro;
2449 for (coro = coro_first; coro; coro = coro->next) 3733 for (coro = coro_first; coro; coro = coro->next)
2450 if (coro->hv) 3734 if (coro->hv)
2451 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3735 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2452} 3736}
2453 3737
… …
2457 eval = 1 3741 eval = 1
2458 CODE: 3742 CODE:
2459{ 3743{
2460 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3744 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2461 { 3745 {
2462 struct coro temp; 3746 struct coro *current = SvSTATE_current;
3747 struct CoroSLF slf_save;
2463 3748
2464 if (!(coro->flags & CF_RUNNING)) 3749 if (current != coro)
2465 { 3750 {
2466 PUTBACK; 3751 PUTBACK;
2467 save_perl (aTHX_ &temp); 3752 save_perl (aTHX_ current);
2468 load_perl (aTHX_ coro); 3753 load_perl (aTHX_ coro);
3754 /* the coro is most likely in an active SLF call.
3755 * while not strictly required (the code we execute is
3756 * not allowed to call any SLF functions), it's cleaner
3757 * to reinitialise the slf_frame and restore it later.
3758 * This might one day allow us to actually do SLF calls
3759 * from code executed here.
3760 */
3761 slf_save = slf_frame;
3762 slf_frame.prepare = 0;
3763 SPAGAIN;
2469 } 3764 }
2470 3765
2471 {
2472 dSP;
2473 ENTER;
2474 SAVETMPS;
2475 PUTBACK;
2476 PUSHSTACK; 3766 PUSHSTACK;
3767
2477 PUSHMARK (SP); 3768 PUSHMARK (SP);
3769 PUTBACK;
2478 3770
2479 if (ix) 3771 if (ix)
2480 eval_sv (coderef, 0); 3772 eval_sv (coderef, 0);
2481 else 3773 else
2482 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3774 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2483 3775
2484 POPSTACK; 3776 POPSTACK;
2485 SPAGAIN; 3777 SPAGAIN;
2486 FREETMPS;
2487 LEAVE;
2488 PUTBACK;
2489 }
2490 3778
2491 if (!(coro->flags & CF_RUNNING)) 3779 if (current != coro)
2492 { 3780 {
3781 PUTBACK;
3782 slf_frame = slf_save;
2493 save_perl (aTHX_ coro); 3783 save_perl (aTHX_ coro);
2494 load_perl (aTHX_ &temp); 3784 load_perl (aTHX_ current);
2495 SPAGAIN; 3785 SPAGAIN;
2496 } 3786 }
2497 } 3787 }
2498} 3788}
2499 3789
… …
2502 PROTOTYPE: $ 3792 PROTOTYPE: $
2503 ALIAS: 3793 ALIAS:
2504 is_ready = CF_READY 3794 is_ready = CF_READY
2505 is_running = CF_RUNNING 3795 is_running = CF_RUNNING
2506 is_new = CF_NEW 3796 is_new = CF_NEW
2507 is_destroyed = CF_DESTROYED 3797 is_destroyed = CF_ZOMBIE
3798 is_zombie = CF_ZOMBIE
3799 is_suspended = CF_SUSPENDED
2508 CODE: 3800 CODE:
2509 RETVAL = boolSV (coro->flags & ix); 3801 RETVAL = boolSV (coro->flags & ix);
2510 OUTPUT: 3802 OUTPUT:
2511 RETVAL 3803 RETVAL
2512 3804
2513void 3805void
2514throw (Coro::State self, SV *throw = &PL_sv_undef) 3806throw (SV *self, SV *exception = &PL_sv_undef)
2515 PROTOTYPE: $;$ 3807 PROTOTYPE: $;$
2516 CODE: 3808 CODE:
2517{ 3809{
3810 struct coro *coro = SvSTATE (self);
2518 struct coro *current = SvSTATE_current; 3811 struct coro *current = SvSTATE_current;
2519 SV **throwp = self == current ? &coro_throw : &self->throw; 3812 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2520 SvREFCNT_dec (*throwp); 3813 SvREFCNT_dec (*exceptionp);
2521 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3814 SvGETMAGIC (exception);
3815 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3816
3817 api_ready (aTHX_ self);
2522} 3818}
2523 3819
2524void 3820void
2525api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3821api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2526 PROTOTYPE: $;$ 3822 PROTOTYPE: $;$
… …
2528 3824
2529SV * 3825SV *
2530has_cctx (Coro::State coro) 3826has_cctx (Coro::State coro)
2531 PROTOTYPE: $ 3827 PROTOTYPE: $
2532 CODE: 3828 CODE:
2533 RETVAL = boolSV (!!coro->cctx); 3829 /* maybe manage the running flag differently */
3830 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2534 OUTPUT: 3831 OUTPUT:
2535 RETVAL 3832 RETVAL
2536 3833
2537int 3834int
2538is_traced (Coro::State coro) 3835is_traced (Coro::State coro)
… …
2558 3855
2559void 3856void
2560force_cctx () 3857force_cctx ()
2561 PROTOTYPE: 3858 PROTOTYPE:
2562 CODE: 3859 CODE:
2563 SvSTATE_current->cctx->idle_sp = 0; 3860 cctx_current->idle_sp = 0;
2564 3861
2565void 3862void
2566swap_defsv (Coro::State self) 3863swap_defsv (Coro::State self)
2567 PROTOTYPE: $ 3864 PROTOTYPE: $
2568 ALIAS: 3865 ALIAS:
… …
2576 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3873 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2577 3874
2578 SV *tmp = *src; *src = *dst; *dst = tmp; 3875 SV *tmp = *src; *src = *dst; *dst = tmp;
2579 } 3876 }
2580 3877
3878void
3879cancel (Coro::State self)
3880 CODE:
3881 coro_state_destroy (aTHX_ self);
3882
3883SV *
3884enable_times (int enabled = enable_times)
3885 CODE:
3886{
3887 RETVAL = boolSV (enable_times);
3888
3889 if (enabled != enable_times)
3890 {
3891 enable_times = enabled;
3892
3893 coro_times_update ();
3894 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3895 }
3896}
3897 OUTPUT:
3898 RETVAL
3899
3900void
3901times (Coro::State self)
3902 PPCODE:
3903{
3904 struct coro *current = SvSTATE (coro_current);
3905
3906 if (ecb_expect_false (current == self))
3907 {
3908 coro_times_update ();
3909 coro_times_add (SvSTATE (coro_current));
3910 }
3911
3912 EXTEND (SP, 2);
3913 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3914 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3915
3916 if (ecb_expect_false (current == self))
3917 coro_times_sub (SvSTATE (coro_current));
3918}
3919
3920void
3921swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3922 CODE:
3923{
3924 struct coro *current = SvSTATE_current;
3925
3926 if (current == coro)
3927 SWAP_SVS (current);
3928
3929 if (!coro->swap_sv)
3930 coro->swap_sv = newAV ();
3931
3932 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3933 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3934
3935 if (current == coro)
3936 SWAP_SVS (current);
3937}
3938
2581 3939
2582MODULE = Coro::State PACKAGE = Coro 3940MODULE = Coro::State PACKAGE = Coro
2583 3941
2584BOOT: 3942BOOT:
2585{ 3943{
2586 int i;
2587
2588 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2589 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3944 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2590 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3945 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2591 3946 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2592 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3947 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2593 SvREADONLY_on (coro_current); 3948 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3949 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3950 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3951 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3952
3953 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3954 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3955 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3956 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2594 3957
2595 coro_stash = gv_stashpv ("Coro", TRUE); 3958 coro_stash = gv_stashpv ("Coro", TRUE);
2596 3959
2597 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3960 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2598 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3961 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2599 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3962 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2600 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3963 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2601 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3964 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2602 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3965 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2603
2604 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2605 coro_ready[i] = newAV ();
2606 3966
2607 { 3967 {
2608 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3968 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2609 3969
2610 coroapi.schedule = api_schedule; 3970 coroapi.schedule = api_schedule;
3971 coroapi.schedule_to = api_schedule_to;
2611 coroapi.cede = api_cede; 3972 coroapi.cede = api_cede;
2612 coroapi.cede_notself = api_cede_notself; 3973 coroapi.cede_notself = api_cede_notself;
2613 coroapi.ready = api_ready; 3974 coroapi.ready = api_ready;
2614 coroapi.is_ready = api_is_ready; 3975 coroapi.is_ready = api_is_ready;
2615 coroapi.nready = coro_nready; 3976 coroapi.nready = coro_nready;
2616 coroapi.current = coro_current; 3977 coroapi.current = coro_current;
2617 3978
3979 coroapi.enterleave_hook = api_enterleave_hook;
3980 coroapi.enterleave_unhook = api_enterleave_unhook;
3981 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
3982
2618 GCoroAPI = &coroapi; 3983 /*GCoroAPI = &coroapi;*/
2619 sv_setiv (sv, (IV)&coroapi); 3984 sv_setiv (sv, (IV)&coroapi);
2620 SvREADONLY_on (sv); 3985 SvREADONLY_on (sv);
2621 } 3986 }
2622} 3987}
3988
3989SV *
3990async (...)
3991 PROTOTYPE: &@
3992 CODE:
3993 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3994 api_ready (aTHX_ RETVAL);
3995 OUTPUT:
3996 RETVAL
3997
3998void
3999_destroy (Coro::State coro)
4000 CODE:
4001 /* used by the manager thread */
4002 coro_state_destroy (aTHX_ coro);
4003
4004void
4005on_destroy (Coro::State coro, SV *cb)
4006 CODE:
4007 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4008
4009void
4010join (...)
4011 CODE:
4012 CORO_EXECUTE_SLF_XS (slf_init_join);
4013
4014void
4015terminate (...)
4016 CODE:
4017 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4018
4019void
4020cancel (...)
4021 CODE:
4022 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4023
4024int
4025safe_cancel (Coro::State self, ...)
4026 C_ARGS: aTHX_ self, &ST (1), items - 1
2623 4027
2624void 4028void
2625schedule (...) 4029schedule (...)
2626 CODE: 4030 CODE:
2627 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4031 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2628 4032
2629void 4033void
4034schedule_to (...)
4035 CODE:
4036 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4037
4038void
4039cede_to (...)
4040 CODE:
4041 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
4042
4043void
2630cede (...) 4044cede (...)
2631 CODE: 4045 CODE:
2632 CORO_EXECUTE_SLF_XS (slf_init_cede); 4046 CORO_EXECUTE_SLF_XS (slf_init_cede);
2633 4047
2634void 4048void
… …
2638 4052
2639void 4053void
2640_set_current (SV *current) 4054_set_current (SV *current)
2641 PROTOTYPE: $ 4055 PROTOTYPE: $
2642 CODE: 4056 CODE:
2643 SvREFCNT_dec (SvRV (coro_current)); 4057 SvREFCNT_dec_NN (SvRV (coro_current));
2644 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4058 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2645 4059
2646void 4060void
2647_set_readyhook (SV *hook) 4061_set_readyhook (SV *hook)
2648 PROTOTYPE: $ 4062 PROTOTYPE: $
2649 CODE: 4063 CODE:
2650 SvREFCNT_dec (coro_readyhook); 4064 SvREFCNT_dec (coro_readyhook);
4065 SvGETMAGIC (hook);
4066 if (SvOK (hook))
4067 {
2651 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4068 coro_readyhook = newSVsv (hook);
4069 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4070 }
4071 else
4072 {
4073 coro_readyhook = 0;
4074 CORO_READYHOOK = 0;
4075 }
2652 4076
2653int 4077int
2654prio (Coro::State coro, int newprio = 0) 4078prio (Coro::State coro, int newprio = 0)
2655 PROTOTYPE: $;$ 4079 PROTOTYPE: $;$
2656 ALIAS: 4080 ALIAS:
… …
2662 if (items > 1) 4086 if (items > 1)
2663 { 4087 {
2664 if (ix) 4088 if (ix)
2665 newprio = coro->prio - newprio; 4089 newprio = coro->prio - newprio;
2666 4090
2667 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4091 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2668 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4092 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2669 4093
2670 coro->prio = newprio; 4094 coro->prio = newprio;
2671 } 4095 }
2672} 4096}
2673 OUTPUT: 4097 OUTPUT:
… …
2687 CODE: 4111 CODE:
2688 RETVAL = coro_nready; 4112 RETVAL = coro_nready;
2689 OUTPUT: 4113 OUTPUT:
2690 RETVAL 4114 RETVAL
2691 4115
2692# for async_pool speedup
2693void 4116void
2694_pool_1 (SV *cb) 4117suspend (Coro::State self)
4118 PROTOTYPE: $
2695 CODE: 4119 CODE:
2696{ 4120 self->flags |= CF_SUSPENDED;
2697 HV *hv = (HV *)SvRV (coro_current);
2698 struct coro *coro = SvSTATE_hv ((SV *)hv);
2699 AV *defav = GvAV (PL_defgv);
2700 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2701 AV *invoke_av;
2702 int i, len;
2703 4121
2704 if (!invoke) 4122void
4123resume (Coro::State self)
4124 PROTOTYPE: $
4125 CODE:
4126 self->flags &= ~CF_SUSPENDED;
4127
4128void
4129_pool_handler (...)
4130 CODE:
4131 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4132
4133void
4134async_pool (SV *cv, ...)
4135 PROTOTYPE: &@
4136 PPCODE:
4137{
4138 HV *hv = (HV *)av_pop (av_async_pool);
4139 AV *av = newAV ();
4140 SV *cb = ST (0);
4141 int i;
4142
4143 av_extend (av, items - 2);
4144 for (i = 1; i < items; ++i)
4145 av_push (av, SvREFCNT_inc_NN (ST (i)));
4146
4147 if ((SV *)hv == &PL_sv_undef)
2705 { 4148 {
2706 SV *old = PL_diehook; 4149 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2707 PL_diehook = 0; 4150 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2708 SvREFCNT_dec (old); 4151 SvREFCNT_dec_NN (sv);
2709 croak ("\3async_pool terminate\2\n");
2710 } 4152 }
2711 4153
2712 SvREFCNT_dec (coro->saved_deffh);
2713 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2714
2715 hv_store (hv, "desc", sizeof ("desc") - 1,
2716 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2717
2718 invoke_av = (AV *)SvRV (invoke);
2719 len = av_len (invoke_av);
2720
2721 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2722
2723 if (len > 0)
2724 { 4154 {
2725 av_fill (defav, len - 1); 4155 struct coro *coro = SvSTATE_hv (hv);
2726 for (i = 0; i < len; ++i) 4156
2727 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4157 assert (!coro->invoke_cb);
4158 assert (!coro->invoke_av);
4159 coro->invoke_cb = SvREFCNT_inc (cb);
4160 coro->invoke_av = av;
2728 } 4161 }
4162
4163 api_ready (aTHX_ (SV *)hv);
4164
4165 if (GIMME_V != G_VOID)
4166 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4167 else
4168 SvREFCNT_dec_NN (hv);
2729} 4169}
4170
4171SV *
4172rouse_cb ()
4173 PROTOTYPE:
4174 CODE:
4175 RETVAL = coro_new_rouse_cb (aTHX);
4176 OUTPUT:
4177 RETVAL
2730 4178
2731void 4179void
2732_pool_2 (SV *cb) 4180rouse_wait (...)
4181 PROTOTYPE: ;$
4182 PPCODE:
4183 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4184
4185void
4186on_enter (SV *block)
4187 ALIAS:
4188 on_leave = 1
4189 PROTOTYPE: &
2733 CODE: 4190 CODE:
2734{ 4191{
2735 HV *hv = (HV *)SvRV (coro_current);
2736 struct coro *coro = SvSTATE_hv ((SV *)hv); 4192 struct coro *coro = SvSTATE_current;
4193 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2737 4194
2738 sv_setsv (cb, &PL_sv_undef); 4195 block = s_get_cv_croak (block);
2739 4196
2740 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4197 if (!*avp)
2741 coro->saved_deffh = 0; 4198 *avp = newAV ();
2742 4199
2743 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4200 av_push (*avp, SvREFCNT_inc (block));
2744 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2745 {
2746 SV *old = PL_diehook;
2747 PL_diehook = 0;
2748 SvREFCNT_dec (old);
2749 croak ("\3async_pool terminate\2\n");
2750 }
2751 4201
2752 av_clear (GvAV (PL_defgv)); 4202 if (!ix)
2753 hv_store (hv, "desc", sizeof ("desc") - 1, 4203 on_enterleave_call (aTHX_ block);
2754 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2755 4204
2756 coro->prio = 0; 4205 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2757 4206 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2758 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4207 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2759 api_trace (aTHX_ coro_current, 0);
2760
2761 av_push (av_async_pool, newSVsv (coro_current));
2762} 4208}
2763 4209
2764 4210
2765MODULE = Coro::State PACKAGE = PerlIO::cede 4211MODULE = Coro::State PACKAGE = PerlIO::cede
2766 4212
… …
2769 4215
2770 4216
2771MODULE = Coro::State PACKAGE = Coro::Semaphore 4217MODULE = Coro::State PACKAGE = Coro::Semaphore
2772 4218
2773SV * 4219SV *
2774new (SV *klass, SV *count_ = 0) 4220new (SV *klass, SV *count = 0)
2775 CODE: 4221 CODE:
2776{ 4222{
2777 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4223 int semcnt = 1;
2778 AV *av = newAV (); 4224
2779 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4225 if (count)
2780 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4226 {
4227 SvGETMAGIC (count);
4228
4229 if (SvOK (count))
4230 semcnt = SvIV (count);
4231 }
4232
4233 RETVAL = sv_bless (
4234 coro_waitarray_new (aTHX_ semcnt),
4235 GvSTASH (CvGV (cv))
4236 );
2781} 4237}
4238 OUTPUT:
4239 RETVAL
4240
4241# helper for Coro::Channel and others
4242SV *
4243_alloc (int count)
4244 CODE:
4245 RETVAL = coro_waitarray_new (aTHX_ count);
2782 OUTPUT: 4246 OUTPUT:
2783 RETVAL 4247 RETVAL
2784 4248
2785SV * 4249SV *
2786count (SV *self) 4250count (SV *self)
… …
2795 adjust = 1 4259 adjust = 1
2796 CODE: 4260 CODE:
2797 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4261 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2798 4262
2799void 4263void
2800down (SV *self) 4264down (...)
2801 CODE: 4265 CODE:
2802 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4266 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4267
4268void
4269wait (...)
4270 CODE:
4271 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2803 4272
2804void 4273void
2805try (SV *self) 4274try (SV *self)
2806 PPCODE: 4275 PPCODE:
2807{ 4276{
… …
2819 XSRETURN_NO; 4288 XSRETURN_NO;
2820} 4289}
2821 4290
2822void 4291void
2823waiters (SV *self) 4292waiters (SV *self)
2824 CODE: 4293 PPCODE:
2825{ 4294{
2826 AV *av = (AV *)SvRV (self); 4295 AV *av = (AV *)SvRV (self);
4296 int wcount = AvFILLp (av) + 1 - 1;
2827 4297
2828 if (GIMME_V == G_SCALAR) 4298 if (GIMME_V == G_SCALAR)
2829 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4299 XPUSHs (sv_2mortal (newSViv (wcount)));
2830 else 4300 else
2831 { 4301 {
2832 int i; 4302 int i;
2833 EXTEND (SP, AvFILLp (av) + 1 - 1); 4303 EXTEND (SP, wcount);
2834 for (i = 1; i <= AvFILLp (av); ++i) 4304 for (i = 1; i <= wcount; ++i)
2835 PUSHs (newSVsv (AvARRAY (av)[i])); 4305 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2836 } 4306 }
2837} 4307}
4308
4309MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4310
4311void
4312_may_delete (SV *sem, int count, unsigned int extra_refs)
4313 PPCODE:
4314{
4315 AV *av = (AV *)SvRV (sem);
4316
4317 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4318 && AvFILLp (av) == 0 /* no waiters, just count */
4319 && SvIV (AvARRAY (av)[0]) == count)
4320 XSRETURN_YES;
4321
4322 XSRETURN_NO;
4323}
4324
4325MODULE = Coro::State PACKAGE = Coro::Signal
4326
4327SV *
4328new (SV *klass)
4329 CODE:
4330 RETVAL = sv_bless (
4331 coro_waitarray_new (aTHX_ 0),
4332 GvSTASH (CvGV (cv))
4333 );
4334 OUTPUT:
4335 RETVAL
4336
4337void
4338wait (...)
4339 CODE:
4340 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4341
4342void
4343broadcast (SV *self)
4344 CODE:
4345{
4346 AV *av = (AV *)SvRV (self);
4347 coro_signal_wake (aTHX_ av, AvFILLp (av));
4348}
4349
4350void
4351send (SV *self)
4352 CODE:
4353{
4354 AV *av = (AV *)SvRV (self);
4355
4356 if (AvFILLp (av))
4357 coro_signal_wake (aTHX_ av, 1);
4358 else
4359 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4360}
4361
4362IV
4363awaited (SV *self)
4364 CODE:
4365 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4366 OUTPUT:
4367 RETVAL
2838 4368
2839 4369
2840MODULE = Coro::State PACKAGE = Coro::AnyEvent 4370MODULE = Coro::State PACKAGE = Coro::AnyEvent
2841 4371
2842BOOT: 4372BOOT:
… …
2844 4374
2845void 4375void
2846_schedule (...) 4376_schedule (...)
2847 CODE: 4377 CODE:
2848{ 4378{
2849 static int incede; 4379 static int incede;
2850 4380
2851 api_cede_notself (aTHX); 4381 api_cede_notself (aTHX);
2852 4382
2853 ++incede; 4383 ++incede;
2854 while (coro_nready >= incede && api_cede (aTHX)) 4384 while (coro_nready >= incede && api_cede (aTHX))
… …
2857 sv_setsv (sv_activity, &PL_sv_undef); 4387 sv_setsv (sv_activity, &PL_sv_undef);
2858 if (coro_nready >= incede) 4388 if (coro_nready >= incede)
2859 { 4389 {
2860 PUSHMARK (SP); 4390 PUSHMARK (SP);
2861 PUTBACK; 4391 PUTBACK;
2862 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4392 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2863 SPAGAIN;
2864 } 4393 }
2865 4394
2866 --incede; 4395 --incede;
2867} 4396}
2868 4397
… …
2871 4400
2872void 4401void
2873_register (char *target, char *proto, SV *req) 4402_register (char *target, char *proto, SV *req)
2874 CODE: 4403 CODE:
2875{ 4404{
2876 HV *st; 4405 SV *req_cv = s_get_cv_croak (req);
2877 GV *gvp; 4406 /* newXSproto doesn't return the CV on 5.8 */
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 CV *slf_cv = newXSproto (target, coro_aio_req_xs, __FILE__, proto); 4407 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4408 sv_setpv ((SV *)slf_cv, proto);
2880 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4409 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2881} 4410}
2882 4411
4412MODULE = Coro::State PACKAGE = Coro::Select
4413
4414void
4415patch_pp_sselect ()
4416 CODE:
4417 if (!coro_old_pp_sselect)
4418 {
4419 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4420 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4421 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4422 }
4423
4424void
4425unpatch_pp_sselect ()
4426 CODE:
4427 if (coro_old_pp_sselect)
4428 {
4429 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4430 coro_old_pp_sselect = 0;
4431 }
4432
4433MODULE = Coro::State PACKAGE = Coro::Util
4434
4435void
4436_exit (int code)
4437 CODE:
4438 _exit (code);
4439
4440NV
4441time ()
4442 CODE:
4443 RETVAL = nvtime (aTHX);
4444 OUTPUT:
4445 RETVAL
4446
4447NV
4448gettimeofday ()
4449 PPCODE:
4450{
4451 UV tv [2];
4452 u2time (aTHX_ tv);
4453 EXTEND (SP, 2);
4454 PUSHs (sv_2mortal (newSVuv (tv [0])));
4455 PUSHs (sv_2mortal (newSVuv (tv [1])));
4456}
4457

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