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Comparing Coro/Coro/State.xs (file contents):
Revision 1.288 by root, Mon Nov 17 07:14:50 2008 UTC vs.
Revision 1.454 by root, Tue Jul 7 00:38:03 2015 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SvREFCNT_dec_NN
28 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
29#endif
30
31#ifndef SvREFCNT_inc_NN
32 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
33#endif
34
35#ifndef SVs_PADSTALE
36# define SVs_PADSTALE 0
37#endif
38
39#ifdef PadARRAY
40# define NEWPADAPI 1
41# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
42#else
43typedef AV PADNAMELIST;
44# if !PERL_VERSION_ATLEAST(5,8,0)
45typedef AV PADLIST;
46typedef AV PAD;
47# endif
48# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
49# define PadlistMAX(pl) AvFILLp (pl)
50# define PadlistNAMES(pl) (*PadlistARRAY (pl))
51# define PadARRAY AvARRAY
52# define PadMAX AvFILLp
53# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
54#endif
55#ifndef PadnamelistREFCNT
56# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
57#endif
58#ifndef PadnamelistREFCNT_dec
59# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
60#endif
61
62/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
63/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
64#if PERL_VERSION_ATLEAST(5,19,0)
65# define SVt_BIND SVt_IV
66#endif
67
68#if defined(_WIN32)
69# undef HAS_GETTIMEOFDAY
18# undef setjmp 70# undef setjmp
19# undef longjmp 71# undef longjmp
20# undef _exit 72# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 73# define setjmp _setjmp /* deep magic */
22#else 74#else
23# include <inttypes.h> /* most portable stdint.h */ 75# include <inttypes.h> /* most portable stdint.h */
24#endif 76#endif
25 77
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 78/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 79static int cctx_max_idle = 4;
55 80
56#define PERL_VERSION_ATLEAST(a,b,c) \ 81#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 82# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD
111#endif
112
113#ifndef CORO_STACKGUARD
114# define CORO_STACKGUARD 0
115#endif 83#endif
116 84
117/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 88#endif
121 89
122/* 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
123 * portable way as possible. */ 91 * portable way as possible. */
124#if __GNUC__ >= 4 92#if __GNUC__ >= 4
93# define dSTACKLEVEL int stacklevel_dummy
125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 94# define STACKLEVEL __builtin_frame_address (0)
126#else 95#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 96# define dSTACKLEVEL volatile void *stacklevel
97# define STACKLEVEL ((void *)&stacklevel)
128#endif 98#endif
129 99
130#define IN_DESTRUCT (PL_main_cv == Nullcv) 100#define IN_DESTRUCT PL_dirty
131
132#if __GNUC__ >= 3
133# define attribute(x) __attribute__(x)
134# define expect(expr,value) __builtin_expect ((expr),(value))
135# define INLINE static inline
136#else
137# define attribute(x)
138# define expect(expr,value) (expr)
139# define INLINE static
140#endif
141
142#define expect_false(expr) expect ((expr) != 0, 0)
143#define expect_true(expr) expect ((expr) != 0, 1)
144
145#define NOINLINE attribute ((noinline))
146 101
147#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
148 104
149#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
150# if CORO_PTHREAD 106# if CORO_PTHREAD
151static void *coro_thx; 107static void *coro_thx;
152# endif 108# endif
153#endif 109#endif
154 110
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
155static 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);
156 128
157static U32 cctx_gen; 129static U32 cctx_gen;
158static size_t cctx_stacksize = CORO_STACKSIZE; 130static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 131static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 132static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 133static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 134static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 135static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
164 136
137static AV *av_destroy; /* destruction queue */
138static SV *sv_manager; /* the manager coro */
139static SV *sv_idle; /* $Coro::idle */
140
165static GV *irsgv; /* $/ */ 141static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 142static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 143static SV *rv_diehook;
168static SV *rv_warnhook; 144static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */ 145static HV *hv_sig; /* %SIG */
170 146
171/* async_pool helper stuff */ 147/* async_pool helper stuff */
172static SV *sv_pool_rss; 148static SV *sv_pool_rss;
173static SV *sv_pool_size; 149static SV *sv_pool_size;
150static SV *sv_async_pool_idle; /* description string */
174static AV *av_async_pool; 151static AV *av_async_pool; /* idle pool */
152static SV *sv_Coro; /* class string */
153static CV *cv_pool_handler;
175 154
176/* Coro::AnyEvent */ 155/* Coro::AnyEvent */
177static SV *sv_activity; 156static SV *sv_activity;
178 157
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
179static struct coro_cctx *cctx_first; 164static struct coro_cctx *cctx_first;
180static int cctx_count, cctx_idle; 165static int cctx_count, cctx_idle;
181 166
182enum { 167enum
168{
183 CC_MAPPED = 0x01, 169 CC_MAPPED = 0x01,
184 CC_NOREUSE = 0x02, /* throw this away after tracing */ 170 CC_NOREUSE = 0x02, /* throw this away after tracing */
185 CC_TRACE = 0x04, 171 CC_TRACE = 0x04,
186 CC_TRACE_SUB = 0x08, /* trace sub calls */ 172 CC_TRACE_SUB = 0x08, /* trace sub calls */
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 173 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
192typedef struct coro_cctx 178typedef struct coro_cctx
193{ 179{
194 struct coro_cctx *next; 180 struct coro_cctx *next;
195 181
196 /* the stack */ 182 /* the stack */
197 void *sptr; 183 struct coro_stack stack;
198 size_t ssize;
199 184
200 /* cpu state */ 185 /* cpu state */
201 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
202 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
203 JMPENV *top_env; 190 JMPENV *top_env;
204 coro_context cctx; 191 coro_context cctx;
205 192
206 U32 gen; 193 U32 gen;
207#if CORO_USE_VALGRIND 194#if CORO_USE_VALGRIND
208 int valgrind_id; 195 int valgrind_id;
209#endif 196#endif
210 unsigned char flags; 197 unsigned char flags;
211} coro_cctx; 198} coro_cctx;
212 199
200static coro_cctx *cctx_current; /* the currently running cctx */
201
202/*****************************************************************************/
203
204static MGVTBL coro_state_vtbl;
205
213enum { 206enum
207{
214 CF_RUNNING = 0x0001, /* coroutine is running */ 208 CF_RUNNING = 0x0001, /* coroutine is running */
215 CF_READY = 0x0002, /* coroutine is ready */ 209 CF_READY = 0x0002, /* coroutine is ready */
216 CF_NEW = 0x0004, /* has never been switched to */ 210 CF_NEW = 0x0004, /* has never been switched to */
217 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) */
218}; 214};
219 215
220/* 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 */
221typedef struct 217typedef struct
222{ 218{
223 SV *defsv;
224 AV *defav;
225 SV *errsv;
226 SV *irsgv;
227#define VAR(name,type) type name; 219 #define VARx(name,expr,type) type name;
228# include "state.h" 220 #include "state.h"
229#undef VAR
230} perl_slots; 221} perl_slots;
231 222
223/* how many context stack entries do we need for perl_slots */
232#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))
233 225
234/* this is a structure representing a perl-level coroutine */ 226/* this is a structure representing a perl-level coroutine */
235struct coro { 227struct coro
228{
236 /* the C coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
237 coro_cctx *cctx; 230 coro_cctx *cctx;
231
232 /* ready queue */
233 struct coro *next_ready;
238 234
239 /* state data */ 235 /* state data */
240 struct CoroSLF slf_frame; /* saved slf frame */ 236 struct CoroSLF slf_frame; /* saved slf frame */
241 AV *mainstack; 237 AV *mainstack;
242 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
243 239
240 CV *startcv; /* the CV to execute */
244 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
245 int refcnt; /* coroutines are refcounted, yes */
246 int flags; /* CF_ flags */ 242 int flags; /* CF_ flags */
247 HV *hv; /* the perl hash associated with this coro, if any */ 243 HV *hv; /* the perl hash associated with this coro, if any */
248 void (*on_destroy)(pTHX_ struct coro *coro);
249 244
250 /* statistics */ 245 /* statistics */
251 int usecount; /* number of transfers to this coro */ 246 int usecount; /* number of transfers to this coro */
252 247
253 /* coro process data */ 248 /* coro process data */
254 int prio; 249 int prio;
255 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 */
256 254
257 /* async_pool */ 255 /* async_pool */
258 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;
259 269
260 /* linked list */ 270 /* linked list */
261 struct coro *next, *prev; 271 struct coro *next, *prev;
262}; 272};
263 273
264typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
265typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
266 276
267/* the following variables are effectively part of the perl context */ 277/* the following variables are effectively part of the perl context */
268/* and get copied between struct coro and these variables */ 278/* and get copied between struct coro and these variables */
269/* the mainr easonw e don't support windows process emulation */ 279/* the main reason we don't support windows process emulation */
270static struct CoroSLF slf_frame; /* the current slf frame */ 280static struct CoroSLF slf_frame; /* the current slf frame */
271static SV *coro_throw;
272 281
273/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
274 283
275#define PRIO_MAX 3 284#define CORO_PRIO_MAX 3
276#define PRIO_HIGH 1 285#define CORO_PRIO_HIGH 1
277#define PRIO_NORMAL 0 286#define CORO_PRIO_NORMAL 0
278#define PRIO_LOW -1 287#define CORO_PRIO_LOW -1
279#define PRIO_IDLE -3 288#define CORO_PRIO_IDLE -3
280#define PRIO_MIN -4 289#define CORO_PRIO_MIN -4
281 290
282/* for Coro.pm */ 291/* for Coro.pm */
283static SV *coro_current; 292static SV *coro_current;
284static SV *coro_readyhook; 293static SV *coro_readyhook;
285static 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;
286static struct coro *coro_first; 296static struct coro *coro_first;
287#define coro_nready coroapi.nready 297#define coro_nready coroapi.nready
288 298
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
289/** lowlevel stuff **********************************************************/ 394/** lowlevel stuff **********************************************************/
290 395
291static SV * 396static SV * ecb_noinline
292coro_get_sv (pTHX_ const char *name, int create) 397coro_get_sv (pTHX_ const char *name, int create)
293{ 398{
294#if PERL_VERSION_ATLEAST (5,10,0) 399#if PERL_VERSION_ATLEAST (5,10,0)
295 /* 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 */
296 get_sv (name, create); 401 get_sv (name, create);
297#endif 402#endif
298 return get_sv (name, create); 403 return get_sv (name, create);
299} 404}
300 405
301static AV * 406static AV * ecb_noinline
302coro_get_av (pTHX_ const char *name, int create) 407coro_get_av (pTHX_ const char *name, int create)
303{ 408{
304#if PERL_VERSION_ATLEAST (5,10,0) 409#if PERL_VERSION_ATLEAST (5,10,0)
305 /* 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 */
306 get_av (name, create); 411 get_av (name, create);
307#endif 412#endif
308 return get_av (name, create); 413 return get_av (name, create);
309} 414}
310 415
311static HV * 416static HV * ecb_noinline
312coro_get_hv (pTHX_ const char *name, int create) 417coro_get_hv (pTHX_ const char *name, int create)
313{ 418{
314#if PERL_VERSION_ATLEAST (5,10,0) 419#if PERL_VERSION_ATLEAST (5,10,0)
315 /* 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 */
316 get_hv (name, create); 421 get_hv (name, create);
317#endif 422#endif
318 return get_hv (name, create); 423 return get_hv (name, create);
319} 424}
320 425
321static 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 *
322coro_clone_padlist (pTHX_ CV *cv) 532coro_derive_padlist (pTHX_ CV *cv)
323{ 533{
324 AV *padlist = CvPADLIST (cv); 534 PADLIST *padlist = CvPADLIST (cv);
325 AV *newpadlist, *newpad; 535 PADLIST *newpadlist;
536 PADNAMELIST *padnames;
537 PAD *newpad;
538 PADOFFSET off = PadlistMAX (padlist) + 1;
326 539
327 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. */
328 AvREAL_off (newpadlist); 568 AvREAL_off (newpadlist);
329#if PERL_VERSION_ATLEAST (5,10,0)
330 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
331#else
332 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
333#endif 569#endif
334 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
335 --AvFILLp (padlist);
336 570
337 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 571 /* Already extended to 2 elements by newPADLIST. */
338 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;
339 579
340 return newpadlist; 580 return newpadlist;
341} 581}
342 582
343static void 583ecb_inline void
344free_padlist (pTHX_ AV *padlist) 584free_padlist (pTHX_ PADLIST *padlist)
345{ 585{
346 /* may be during global destruction */ 586 /* may be during global destruction */
347 if (SvREFCNT (padlist)) 587 if (!IN_DESTRUCT)
348 { 588 {
349 I32 i = AvFILLp (padlist); 589 I32 i = PadlistMAX (padlist);
350 while (i >= 0) 590
591 while (i > 0) /* special-case index 0 */
351 { 592 {
352 SV **svp = av_fetch (padlist, i--, FALSE); 593 /* we try to be extra-careful here */
594 PAD *pad = PadlistARRAY (padlist)[i--];
595
353 if (svp) 596 if (pad)
354 { 597 {
355 SV *sv; 598 I32 j = PadMAX (pad);
356 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 599
600 while (j >= 0)
357 SvREFCNT_dec (sv); 601 SvREFCNT_dec (PadARRAY (pad)[j--]);
358 602
603 PadMAX (pad) = -1;
359 SvREFCNT_dec (*svp); 604 SvREFCNT_dec (pad);
360 } 605 }
361 } 606 }
362 607
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);
363 SvREFCNT_dec ((SV*)padlist); 616 SvREFCNT_dec ((SV*)padlist);
617#endif
364 } 618 }
365} 619}
366 620
367static int 621static int
368coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 622coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
369{ 623{
370 AV *padlist; 624 PADLIST *padlist;
371 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;
372 627
373 /* casting is fun. */ 628 /* perl manages to free our internal AV and _then_ call us */
374 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 629 if (IN_DESTRUCT)
630 return 0;
631
632 while (len--)
375 free_padlist (aTHX_ padlist); 633 free_padlist (aTHX_ padlists[len]);
376
377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
378 634
379 return 0; 635 return 0;
380} 636}
381
382#define CORO_MAGIC_type_cv 26
383#define CORO_MAGIC_type_state PERL_MAGIC_ext
384 637
385static MGVTBL coro_cv_vtbl = { 638static MGVTBL coro_cv_vtbl = {
386 0, 0, 0, 0, 639 0, 0, 0, 0,
387 coro_cv_free 640 coro_cv_free
388}; 641};
389 642
390#define CORO_MAGIC_NN(sv, type) \
391 (expect_true (SvMAGIC (sv)->mg_type == type) \
392 ? SvMAGIC (sv) \
393 : mg_find (sv, type))
394
395#define CORO_MAGIC(sv, type) \
396 (expect_true (SvMAGIC (sv)) \
397 ? CORO_MAGIC_NN (sv, type) \
398 : 0)
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* faster than SvSTATE, but expects a coroutine hv */
430#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
432
433/* the next two functions merely cache the padlists */ 643/* the next two functions merely cache the padlists */
434static void 644ecb_inline void
435get_padlist (pTHX_ CV *cv) 645get_padlist (pTHX_ CV *cv)
436{ 646{
437 MAGIC *mg = CORO_MAGIC_cv (cv); 647 MAGIC *mg = CORO_MAGIC_cv (cv);
438 AV *av; 648 size_t *lenp;
439 649
440 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 650 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
441 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 651 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
442 else 652 else
443 { 653 {
444#if CORO_PREFER_PERL_FUNCTIONS 654#if CORO_PREFER_PERL_FUNCTIONS
445 /* this is probably cleaner? but also slower! */ 655 /* this is probably cleaner? but also slower! */
446 /* in practise, it seems to be less stable */ 656 /* in practise, it seems to be less stable */
447 CV *cp = Perl_cv_clone (cv); 657 CV *cp = Perl_cv_clone (aTHX_ cv);
448 CvPADLIST (cv) = CvPADLIST (cp); 658 CvPADLIST (cv) = CvPADLIST (cp);
449 CvPADLIST (cp) = 0; 659 CvPADLIST (cp) = 0;
450 SvREFCNT_dec (cp); 660 SvREFCNT_dec (cp);
451#else 661#else
452 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 662 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
453#endif 663#endif
454 } 664 }
455} 665}
456 666
457static void 667ecb_inline void
458put_padlist (pTHX_ CV *cv) 668put_padlist (pTHX_ CV *cv)
459{ 669{
460 MAGIC *mg = CORO_MAGIC_cv (cv); 670 MAGIC *mg = CORO_MAGIC_cv (cv);
461 AV *av;
462 671
463 if (expect_false (!mg)) 672 if (ecb_expect_false (!mg))
673 {
464 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);
465 682
466 av = (AV *)mg->mg_obj; 683 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
467
468 if (expect_false (AvFILLp (av) >= AvMAX (av)))
469 av_extend (av, AvMAX (av) + 1);
470
471 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
472} 684}
473 685
474/** load & save, init *******************************************************/ 686/** load & save, init *******************************************************/
687
688ecb_inline void
689swap_sv (SV *a, SV *b)
690{
691 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
692 SV tmp;
693
694 /* swap sv_any */
695 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
696
697 /* swap sv_flags */
698 SvFLAGS (&tmp) = SvFLAGS (a);
699 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
700 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
701
702#if PERL_VERSION_ATLEAST (5,10,0)
703 /* perl 5.10 and later complicates this _quite_ a bit, but it also
704 * is much faster, so no quarrels here. alternatively, we could
705 * sv_upgrade to avoid this.
706 */
707 {
708 /* swap sv_u */
709 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
710
711 /* if SvANY points to the head, we need to adjust the pointers,
712 * as the pointer for a still points to b, and maybe vice versa.
713 */
714 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
715 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
716 svany_in_head_set |= 1 << SVt_NV;
717 #endif
718
719 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
720
721 if (svany_in_head (SvTYPE (a)))
722 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
723
724 if (svany_in_head (SvTYPE (b)))
725 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
726 }
727#endif
728}
729
730/* swap sv heads, at least logically */
731static void
732swap_svs (pTHX_ Coro__State c)
733{
734 int i;
735
736 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
737 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
738}
739
740#define SWAP_SVS(coro) \
741 if (ecb_expect_false ((coro)->swap_sv)) \
742 swap_svs (aTHX_ (coro))
743
744static void
745on_enterleave_call (pTHX_ SV *cb);
475 746
476static void 747static void
477load_perl (pTHX_ Coro__State c) 748load_perl (pTHX_ Coro__State c)
478{ 749{
479 perl_slots *slot = c->slot; 750 perl_slots *slot = c->slot;
480 c->slot = 0; 751 c->slot = 0;
481 752
482 PL_mainstack = c->mainstack; 753 PL_mainstack = c->mainstack;
483 754
484 GvSV (PL_defgv) = slot->defsv; 755#if CORO_JIT
485 GvAV (PL_defgv) = slot->defav; 756 load_perl_slots (slot);
486 GvSV (PL_errgv) = slot->errsv; 757#else
487 GvSV (irsgv) = slot->irsgv;
488
489 #define VAR(name,type) PL_ ## name = slot->name; 758 #define VARx(name,expr,type) expr = slot->name;
490 # include "state.h" 759 #include "state.h"
491 #undef VAR 760#endif
492 761
493 { 762 {
494 dSP; 763 dSP;
495 764
496 CV *cv; 765 CV *cv;
497 766
498 /* now do the ugly restore mess */ 767 /* now do the ugly restore mess */
499 while (expect_true (cv = (CV *)POPs)) 768 while (ecb_expect_true (cv = (CV *)POPs))
500 { 769 {
501 put_padlist (aTHX_ cv); /* mark this padlist as available */ 770 put_padlist (aTHX_ cv); /* mark this padlist as available */
502 CvDEPTH (cv) = PTR2IV (POPs); 771 CvDEPTH (cv) = PTR2IV (POPs);
503 CvPADLIST (cv) = (AV *)POPs; 772 CvPADLIST (cv) = (PADLIST *)POPs;
504 } 773 }
505 774
506 PUTBACK; 775 PUTBACK;
507 } 776 }
508 777
509 slf_frame = c->slf_frame; 778 slf_frame = c->slf_frame;
510 coro_throw = c->throw; 779 CORO_THROW = c->except;
780
781 if (ecb_expect_false (enable_times))
782 {
783 if (ecb_expect_false (!times_valid))
784 coro_times_update ();
785
786 coro_times_sub (c);
787 }
788
789 if (ecb_expect_false (c->on_enter))
790 {
791 int i;
792
793 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
794 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
795 }
796
797 if (ecb_expect_false (c->on_enter_xs))
798 {
799 int i;
800
801 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
802 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
803 }
804
805 SWAP_SVS (c);
511} 806}
512 807
513static void 808static void
514save_perl (pTHX_ Coro__State c) 809save_perl (pTHX_ Coro__State c)
515{ 810{
516 c->throw = coro_throw; 811 SWAP_SVS (c);
812
813 if (ecb_expect_false (c->on_leave_xs))
814 {
815 int i;
816
817 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
818 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
819 }
820
821 if (ecb_expect_false (c->on_leave))
822 {
823 int i;
824
825 for (i = AvFILLp (c->on_leave); i >= 0; --i)
826 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
827 }
828
829 times_valid = 0;
830
831 if (ecb_expect_false (enable_times))
832 {
833 coro_times_update (); times_valid = 1;
834 coro_times_add (c);
835 }
836
837 c->except = CORO_THROW;
517 c->slf_frame = slf_frame; 838 c->slf_frame = slf_frame;
518 839
519 { 840 {
520 dSP; 841 dSP;
521 I32 cxix = cxstack_ix; 842 I32 cxix = cxstack_ix;
… …
529 850
530 XPUSHs (Nullsv); 851 XPUSHs (Nullsv);
531 /* this loop was inspired by pp_caller */ 852 /* this loop was inspired by pp_caller */
532 for (;;) 853 for (;;)
533 { 854 {
534 while (expect_true (cxix >= 0)) 855 while (ecb_expect_true (cxix >= 0))
535 { 856 {
536 PERL_CONTEXT *cx = &ccstk[cxix--]; 857 PERL_CONTEXT *cx = &ccstk[cxix--];
537 858
538 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 859 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
539 { 860 {
540 CV *cv = cx->blk_sub.cv; 861 CV *cv = cx->blk_sub.cv;
541 862
542 if (expect_true (CvDEPTH (cv))) 863 if (ecb_expect_true (CvDEPTH (cv)))
543 { 864 {
544 EXTEND (SP, 3); 865 EXTEND (SP, 3);
545 PUSHs ((SV *)CvPADLIST (cv)); 866 PUSHs ((SV *)CvPADLIST (cv));
546 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 867 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
547 PUSHs ((SV *)cv); 868 PUSHs ((SV *)cv);
… …
550 get_padlist (aTHX_ cv); 871 get_padlist (aTHX_ cv);
551 } 872 }
552 } 873 }
553 } 874 }
554 875
555 if (expect_true (top_si->si_type == PERLSI_MAIN)) 876 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
556 break; 877 break;
557 878
558 top_si = top_si->si_prev; 879 top_si = top_si->si_prev;
559 ccstk = top_si->si_cxstack; 880 ccstk = top_si->si_cxstack;
560 cxix = top_si->si_cxix; 881 cxix = top_si->si_cxix;
… …
562 883
563 PUTBACK; 884 PUTBACK;
564 } 885 }
565 886
566 /* allocate some space on the context stack for our purposes */ 887 /* allocate some space on the context stack for our purposes */
567 /* we manually unroll here, as usually 2 slots is enough */ 888 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
568 if (SLOT_COUNT >= 1) CXINC;
569 if (SLOT_COUNT >= 2) CXINC;
570 if (SLOT_COUNT >= 3) CXINC;
571 { 889 {
572 int i; 890 unsigned int i;
891
573 for (i = 3; i < SLOT_COUNT; ++i) 892 for (i = 0; i < SLOT_COUNT; ++i)
574 CXINC; 893 CXINC;
575 } 894
576 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 895 cxstack_ix -= SLOT_COUNT; /* undo allocation */
896 }
577 897
578 c->mainstack = PL_mainstack; 898 c->mainstack = PL_mainstack;
579 899
580 { 900 {
581 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 901 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
582 902
583 slot->defav = GvAV (PL_defgv); 903#if CORO_JIT
584 slot->defsv = DEFSV; 904 save_perl_slots (slot);
585 slot->errsv = ERRSV; 905#else
586 slot->irsgv = GvSV (irsgv);
587
588 #define VAR(name,type) slot->name = PL_ ## name; 906 #define VARx(name,expr,type) slot->name = expr;
589 # include "state.h" 907 #include "state.h"
590 #undef VAR 908#endif
591 } 909 }
592} 910}
593 911
594/* 912/*
595 * allocate various perl stacks. This is almost an exact copy 913 * allocate various perl stacks. This is almost an exact copy
596 * of perl.c:init_stacks, except that it uses less memory 914 * of perl.c:init_stacks, except that it uses less memory
597 * on the (sometimes correct) assumption that coroutines do 915 * on the (sometimes correct) assumption that coroutines do
598 * not usually need a lot of stackspace. 916 * not usually need a lot of stackspace.
599 */ 917 */
600#if CORO_PREFER_PERL_FUNCTIONS 918#if CORO_PREFER_PERL_FUNCTIONS
601# define coro_init_stacks init_stacks 919# define coro_init_stacks(thx) init_stacks ()
602#else 920#else
603static void 921static void
604coro_init_stacks (pTHX) 922coro_init_stacks (pTHX)
605{ 923{
606 PL_curstackinfo = new_stackinfo(32, 8); 924 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
607 PL_curstackinfo->si_type = PERLSI_MAIN; 925 PL_curstackinfo->si_type = PERLSI_MAIN;
608 PL_curstack = PL_curstackinfo->si_stack; 926 PL_curstack = PL_curstackinfo->si_stack;
609 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 927 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
610 928
611 PL_stack_base = AvARRAY(PL_curstack); 929 PL_stack_base = AvARRAY(PL_curstack);
… …
626#endif 944#endif
627 945
628 New(54,PL_scopestack,8,I32); 946 New(54,PL_scopestack,8,I32);
629 PL_scopestack_ix = 0; 947 PL_scopestack_ix = 0;
630 PL_scopestack_max = 8; 948 PL_scopestack_max = 8;
949#if HAS_SCOPESTACK_NAME
950 New(54,PL_scopestack_name,8,const char*);
951#endif
631 952
632 New(54,PL_savestack,24,ANY); 953 New(54,PL_savestack,24,ANY);
633 PL_savestack_ix = 0; 954 PL_savestack_ix = 0;
634 PL_savestack_max = 24; 955 PL_savestack_max = 24;
635 956
… …
663 } 984 }
664 985
665 Safefree (PL_tmps_stack); 986 Safefree (PL_tmps_stack);
666 Safefree (PL_markstack); 987 Safefree (PL_markstack);
667 Safefree (PL_scopestack); 988 Safefree (PL_scopestack);
989#if HAS_SCOPESTACK_NAME
990 Safefree (PL_scopestack_name);
991#endif
668 Safefree (PL_savestack); 992 Safefree (PL_savestack);
669#if !PERL_VERSION_ATLEAST (5,10,0) 993#if !PERL_VERSION_ATLEAST (5,10,0)
670 Safefree (PL_retstack); 994 Safefree (PL_retstack);
671#endif 995#endif
672} 996}
673 997
998#define CORO_RSS \
999 rss += sizeof (SYM (curstackinfo)); \
1000 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
1001 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
1002 rss += SYM (tmps_max) * sizeof (SV *); \
1003 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
1004 rss += SYM (scopestack_max) * sizeof (I32); \
1005 rss += SYM (savestack_max) * sizeof (ANY);
1006
674static size_t 1007static size_t
675coro_rss (pTHX_ struct coro *coro) 1008coro_rss (pTHX_ struct coro *coro)
676{ 1009{
677 size_t rss = sizeof (*coro); 1010 size_t rss = sizeof (*coro);
678 1011
679 if (coro->mainstack) 1012 if (coro->mainstack)
680 { 1013 {
681 perl_slots tmp_slot;
682 perl_slots *slot;
683
684 if (coro->flags & CF_RUNNING) 1014 if (coro->flags & CF_RUNNING)
685 { 1015 {
686 slot = &tmp_slot; 1016 #define SYM(sym) PL_ ## sym
687 1017 CORO_RSS;
688 #define VAR(name,type) slot->name = PL_ ## name;
689 # include "state.h"
690 #undef VAR 1018 #undef SYM
691 } 1019 }
692 else 1020 else
693 slot = coro->slot;
694
695 if (slot)
696 { 1021 {
697 rss += sizeof (slot->curstackinfo); 1022 #define SYM(sym) coro->slot->sym
698 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1023 CORO_RSS;
699 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1024 #undef SYM
700 rss += slot->tmps_max * sizeof (SV *);
701 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
702 rss += slot->scopestack_max * sizeof (I32);
703 rss += slot->savestack_max * sizeof (ANY);
704
705#if !PERL_VERSION_ATLEAST (5,10,0)
706 rss += slot->retstack_max * sizeof (OP *);
707#endif
708 } 1025 }
709 } 1026 }
710 1027
711 return rss; 1028 return rss;
712} 1029}
… …
725#endif 1042#endif
726 1043
727/* 1044/*
728 * This overrides the default magic get method of %SIG elements. 1045 * This overrides the default magic get method of %SIG elements.
729 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1046 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
730 * and instead of tryign to save and restore the hash elements, we just provide 1047 * and instead of trying to save and restore the hash elements (extremely slow),
731 * readback here. 1048 * we just provide our own readback here.
732 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
733 * not expecting this to actually change the hook. This is a potential problem
734 * when a schedule happens then, but we ignore this.
735 */ 1049 */
736static int 1050static int ecb_cold
737coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1051coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
738{ 1052{
739 const char *s = MgPV_nolen_const (mg); 1053 const char *s = MgPV_nolen_const (mg);
740 1054
741 if (*s == '_') 1055 if (*s == '_')
742 { 1056 {
743 SV **svp = 0; 1057 SV **svp = 0;
744 1058
745 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1059 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
746 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1060 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
747 1061
748 if (svp) 1062 if (svp)
749 { 1063 {
750 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1064 SV *ssv;
1065
1066 if (!*svp)
1067 ssv = &PL_sv_undef;
1068 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1069 ssv = sv_2mortal (newRV_inc (*svp));
1070 else
1071 ssv = *svp;
1072
1073 sv_setsv (sv, ssv);
751 return 0; 1074 return 0;
752 } 1075 }
753 } 1076 }
754 1077
755 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1078 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
756} 1079}
757 1080
758static int 1081static int ecb_cold
759coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1082coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
760{ 1083{
761 const char *s = MgPV_nolen_const (mg); 1084 const char *s = MgPV_nolen_const (mg);
762 1085
763 if (*s == '_') 1086 if (*s == '_')
… …
777 } 1100 }
778 1101
779 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1102 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
780} 1103}
781 1104
782static int 1105static int ecb_cold
783coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1106coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
784{ 1107{
785 const char *s = MgPV_nolen_const (mg); 1108 const char *s = MgPV_nolen_const (mg);
786 1109
787 if (*s == '_') 1110 if (*s == '_')
… …
792 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1115 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
793 1116
794 if (svp) 1117 if (svp)
795 { 1118 {
796 SV *old = *svp; 1119 SV *old = *svp;
797 *svp = newSVsv (sv); 1120 *svp = SvOK (sv) ? newSVsv (sv) : 0;
798 SvREFCNT_dec (old); 1121 SvREFCNT_dec (old);
799 return 0; 1122 return 0;
800 } 1123 }
801 } 1124 }
802 1125
… …
814slf_check_nop (pTHX_ struct CoroSLF *frame) 1137slf_check_nop (pTHX_ struct CoroSLF *frame)
815{ 1138{
816 return 0; 1139 return 0;
817} 1140}
818 1141
819static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1142static int
1143slf_check_repeat (pTHX_ struct CoroSLF *frame)
1144{
1145 return 1;
1146}
1147
1148static UNOP init_perl_op;
1149
1150ecb_noinline static void /* noinline to keep it out of the transfer fast path */
820coro_setup (pTHX_ struct coro *coro) 1151init_perl (pTHX_ struct coro *coro)
821{ 1152{
822 /* 1153 /*
823 * emulate part of the perl startup here. 1154 * emulate part of the perl startup here.
824 */ 1155 */
825 coro_init_stacks (aTHX); 1156 coro_init_stacks (aTHX);
826 1157
827 PL_runops = RUNOPS_DEFAULT; 1158 PL_runops = RUNOPS_DEFAULT;
828 PL_curcop = &PL_compiling; 1159 PL_curcop = &PL_compiling;
829 PL_in_eval = EVAL_NULL; 1160 PL_in_eval = EVAL_NULL;
830 PL_comppad = 0; 1161 PL_comppad = 0;
1162 PL_comppad_name = 0;
1163 PL_comppad_name_fill = 0;
1164 PL_comppad_name_floor = 0;
831 PL_curpm = 0; 1165 PL_curpm = 0;
832 PL_curpad = 0; 1166 PL_curpad = 0;
833 PL_localizing = 0; 1167 PL_localizing = 0;
834 PL_dirty = 0;
835 PL_restartop = 0; 1168 PL_restartop = 0;
836#if PERL_VERSION_ATLEAST (5,10,0) 1169#if PERL_VERSION_ATLEAST (5,10,0)
837 PL_parser = 0; 1170 PL_parser = 0;
838#endif 1171#endif
1172 PL_hints = 0;
839 1173
840 /* recreate the die/warn hooks */ 1174 /* recreate the die/warn hooks */
841 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1175 PL_diehook = SvREFCNT_inc (rv_diehook);
842 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1176 PL_warnhook = SvREFCNT_inc (rv_warnhook);
843 1177
844 GvSV (PL_defgv) = newSV (0); 1178 GvSV (PL_defgv) = newSV (0);
845 GvAV (PL_defgv) = coro->args; coro->args = 0; 1179 GvAV (PL_defgv) = coro->args; coro->args = 0;
846 GvSV (PL_errgv) = newSV (0); 1180 GvSV (PL_errgv) = newSV (0);
847 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1181 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1182 GvHV (PL_hintgv) = newHV ();
1183#if PERL_VERSION_ATLEAST (5,10,0)
1184 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1185#endif
848 PL_rs = newSVsv (GvSV (irsgv)); 1186 PL_rs = newSVsv (GvSV (irsgv));
849 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1187 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
850 1188
851 { 1189 {
852 dSP; 1190 dSP;
853 UNOP myop; 1191 UNOP myop;
854 1192
855 Zero (&myop, 1, UNOP); 1193 Zero (&myop, 1, UNOP);
856 myop.op_next = Nullop; 1194 myop.op_next = Nullop;
1195 myop.op_type = OP_ENTERSUB;
857 myop.op_flags = OPf_WANT_VOID; 1196 myop.op_flags = OPf_WANT_VOID;
858 1197
859 PUSHMARK (SP); 1198 PUSHMARK (SP);
860 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1199 PUSHs ((SV *)coro->startcv);
861 PUTBACK; 1200 PUTBACK;
862 PL_op = (OP *)&myop; 1201 PL_op = (OP *)&myop;
863 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1202 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
864 SPAGAIN;
865 } 1203 }
866 1204
867 /* this newly created coroutine might be run on an existing cctx which most 1205 /* this newly created coroutine might be run on an existing cctx which most
868 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1206 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
869 */ 1207 */
870 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1208 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
871 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1209 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1210 slf_frame.destroy = 0;
872 1211
873 coro_throw = coro->throw; 1212 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
874} 1213 init_perl_op.op_next = PL_op;
1214 init_perl_op.op_type = OP_ENTERSUB;
1215 init_perl_op.op_ppaddr = pp_slf;
1216 /* no flags etc. required, as an init function won't be called */
875 1217
1218 PL_op = (OP *)&init_perl_op;
1219
1220 /* copy throw, in case it was set before init_perl */
1221 CORO_THROW = coro->except;
1222
1223 SWAP_SVS (coro);
1224
1225 if (ecb_expect_false (enable_times))
1226 {
1227 coro_times_update ();
1228 coro_times_sub (coro);
1229 }
1230}
1231
876static void 1232static void
877coro_destruct (pTHX_ struct coro *coro) 1233coro_unwind_stacks (pTHX)
878{ 1234{
879 if (!IN_DESTRUCT) 1235 if (!IN_DESTRUCT)
880 { 1236 {
881 /* restore all saved variables and stuff */ 1237 /* restore all saved variables and stuff */
882 LEAVE_SCOPE (0); 1238 LEAVE_SCOPE (0);
… …
890 POPSTACK_TO (PL_mainstack); 1246 POPSTACK_TO (PL_mainstack);
891 1247
892 /* unwind main stack */ 1248 /* unwind main stack */
893 dounwind (-1); 1249 dounwind (-1);
894 } 1250 }
1251}
895 1252
896 SvREFCNT_dec (GvSV (PL_defgv)); 1253static void
897 SvREFCNT_dec (GvAV (PL_defgv)); 1254destroy_perl (pTHX_ struct coro *coro)
898 SvREFCNT_dec (GvSV (PL_errgv)); 1255{
899 SvREFCNT_dec (PL_defoutgv); 1256 SV *svf [9];
900 SvREFCNT_dec (PL_rs);
901 SvREFCNT_dec (GvSV (irsgv));
902 1257
903 SvREFCNT_dec (PL_diehook);
904 SvREFCNT_dec (PL_warnhook);
905 1258 {
1259 SV *old_current = SvRV (coro_current);
1260 struct coro *current = SvSTATE (old_current);
1261
1262 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1263
1264 save_perl (aTHX_ current);
1265
1266 /* this will cause transfer_check to croak on block*/
1267 SvRV_set (coro_current, (SV *)coro->hv);
1268
1269 load_perl (aTHX_ coro);
1270
1271 coro_unwind_stacks (aTHX);
1272
1273 /* restore swapped sv's */
1274 SWAP_SVS (coro);
1275
1276 coro_destruct_stacks (aTHX);
1277
1278 /* now save some sv's to be free'd later */
1279 svf [0] = GvSV (PL_defgv);
1280 svf [1] = (SV *)GvAV (PL_defgv);
1281 svf [2] = GvSV (PL_errgv);
1282 svf [3] = (SV *)PL_defoutgv;
1283 svf [4] = PL_rs;
1284 svf [5] = GvSV (irsgv);
1285 svf [6] = (SV *)GvHV (PL_hintgv);
1286 svf [7] = PL_diehook;
1287 svf [8] = PL_warnhook;
1288 assert (9 == sizeof (svf) / sizeof (*svf));
1289
1290 SvRV_set (coro_current, old_current);
1291
1292 load_perl (aTHX_ current);
1293 }
1294
1295 {
1296 unsigned int i;
1297
1298 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1299 SvREFCNT_dec (svf [i]);
1300
906 SvREFCNT_dec (coro->saved_deffh); 1301 SvREFCNT_dec (coro->saved_deffh);
907 SvREFCNT_dec (coro_throw); 1302 SvREFCNT_dec (coro->rouse_cb);
908 1303 SvREFCNT_dec (coro->invoke_cb);
909 coro_destruct_stacks (aTHX); 1304 SvREFCNT_dec (coro->invoke_av);
1305 SvREFCNT_dec (coro->on_enter_xs);
1306 SvREFCNT_dec (coro->on_leave_xs);
1307 }
910} 1308}
911 1309
912INLINE void 1310ecb_inline void
913free_coro_mortal (pTHX) 1311free_coro_mortal (pTHX)
914{ 1312{
915 if (expect_true (coro_mortal)) 1313 if (ecb_expect_true (coro_mortal))
916 { 1314 {
917 SvREFCNT_dec (coro_mortal); 1315 SvREFCNT_dec ((SV *)coro_mortal);
918 coro_mortal = 0; 1316 coro_mortal = 0;
919 } 1317 }
920} 1318}
921 1319
922static int 1320static int
923runops_trace (pTHX) 1321runops_trace (pTHX)
924{ 1322{
925 COP *oldcop = 0; 1323 COP *oldcop = 0;
926 int oldcxix = -2; 1324 int oldcxix = -2;
927 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
928 coro_cctx *cctx = coro->cctx;
929 1325
930 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1326 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
931 { 1327 {
932 PERL_ASYNC_CHECK (); 1328 PERL_ASYNC_CHECK ();
933 1329
934 if (cctx->flags & CC_TRACE_ALL) 1330 if (cctx_current->flags & CC_TRACE_ALL)
935 { 1331 {
936 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1332 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
937 { 1333 {
938 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1334 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
939 SV **bot, **top; 1335 SV **bot, **top;
940 AV *av = newAV (); /* return values */ 1336 AV *av = newAV (); /* return values */
941 SV **cb; 1337 SV **cb;
… …
978 1374
979 if (PL_curcop != &PL_compiling) 1375 if (PL_curcop != &PL_compiling)
980 { 1376 {
981 SV **cb; 1377 SV **cb;
982 1378
983 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1379 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
984 { 1380 {
985 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1381 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
986 1382
987 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1383 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
988 { 1384 {
989 runops_proc_t old_runops = PL_runops;
990 dSP; 1385 dSP;
991 GV *gv = CvGV (cx->blk_sub.cv); 1386 GV *gv = CvGV (cx->blk_sub.cv);
992 SV *fullname = sv_2mortal (newSV (0)); 1387 SV *fullname = sv_2mortal (newSV (0));
993 1388
994 if (isGV (gv)) 1389 if (isGV (gv))
… …
999 SAVETMPS; 1394 SAVETMPS;
1000 EXTEND (SP, 3); 1395 EXTEND (SP, 3);
1001 PUSHMARK (SP); 1396 PUSHMARK (SP);
1002 PUSHs (&PL_sv_yes); 1397 PUSHs (&PL_sv_yes);
1003 PUSHs (fullname); 1398 PUSHs (fullname);
1004 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1399 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1005 PUTBACK; 1400 PUTBACK;
1006 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1401 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1007 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1402 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1008 SPAGAIN; 1403 SPAGAIN;
1009 FREETMPS; 1404 FREETMPS;
… …
1012 } 1407 }
1013 1408
1014 oldcxix = cxstack_ix; 1409 oldcxix = cxstack_ix;
1015 } 1410 }
1016 1411
1017 if (cctx->flags & CC_TRACE_LINE) 1412 if (cctx_current->flags & CC_TRACE_LINE)
1018 { 1413 {
1019 dSP; 1414 dSP;
1020 1415
1021 PL_runops = RUNOPS_DEFAULT; 1416 PL_runops = RUNOPS_DEFAULT;
1022 ENTER; 1417 ENTER;
… …
1041 1436
1042 TAINT_NOT; 1437 TAINT_NOT;
1043 return 0; 1438 return 0;
1044} 1439}
1045 1440
1441static struct CoroSLF cctx_ssl_frame;
1442
1046static void 1443static void
1047prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1444slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1048{ 1445{
1049 ta->prev = (struct coro *)cctx;
1050 ta->next = 0; 1446 ta->prev = 0;
1051} 1447}
1052 1448
1053/* inject a fake call to Coro::State::_cctx_init into the execution */ 1449static int
1054/* _cctx_init should be careful, as it could be called at almost any time */ 1450slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1055/* during execution of a perl program */
1056/* also initialises PL_top_env */
1057static void NOINLINE
1058cctx_prepare (pTHX_ coro_cctx *cctx)
1059{ 1451{
1060 dSP; 1452 *frame = cctx_ssl_frame;
1061 UNOP myop;
1062 1453
1454 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1455}
1456
1457/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1458static void ecb_noinline
1459cctx_prepare (pTHX)
1460{
1063 PL_top_env = &PL_start_env; 1461 PL_top_env = &PL_start_env;
1064 1462
1065 if (cctx->flags & CC_TRACE) 1463 if (cctx_current->flags & CC_TRACE)
1066 PL_runops = runops_trace; 1464 PL_runops = runops_trace;
1067 1465
1068 Zero (&myop, 1, UNOP); 1466 /* we already must be executing an SLF op, there is no other valid way
1069 myop.op_next = PL_op; 1467 * that can lead to creation of a new cctx */
1070 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1468 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1469 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1071 1470
1072 PUSHMARK (SP); 1471 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1073 EXTEND (SP, 2); 1472 cctx_ssl_frame = slf_frame;
1074 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1473
1075 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1474 slf_frame.prepare = slf_prepare_set_stacklevel;
1076 PUTBACK; 1475 slf_frame.check = slf_check_set_stacklevel;
1077 PL_op = (OP *)&myop;
1078 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1079 SPAGAIN;
1080} 1476}
1081 1477
1082/* the tail of transfer: execute stuff we can only do after a transfer */ 1478/* the tail of transfer: execute stuff we can only do after a transfer */
1083INLINE void 1479ecb_inline void
1084transfer_tail (pTHX) 1480transfer_tail (pTHX)
1085{ 1481{
1086 free_coro_mortal (aTHX); 1482 free_coro_mortal (aTHX);
1483}
1484
1485/* try to exit the same way perl's main function would do */
1486/* we do not bother resetting the environment or other things *7
1487/* that are not, uhm, essential */
1488/* this obviously also doesn't work when perl is embedded */
1489static void ecb_noinline ecb_cold
1490perlish_exit (pTHX)
1491{
1492 int exitstatus = perl_destruct (PL_curinterp);
1493 perl_free (PL_curinterp);
1494 exit (exitstatus);
1087} 1495}
1088 1496
1089/* 1497/*
1090 * this is a _very_ stripped down perl interpreter ;) 1498 * this is a _very_ stripped down perl interpreter ;)
1091 */ 1499 */
… …
1103 /* normally we would need to skip the entersub here */ 1511 /* normally we would need to skip the entersub here */
1104 /* not doing so will re-execute it, which is exactly what we want */ 1512 /* not doing so will re-execute it, which is exactly what we want */
1105 /* PL_nop = PL_nop->op_next */ 1513 /* PL_nop = PL_nop->op_next */
1106 1514
1107 /* inject a fake subroutine call to cctx_init */ 1515 /* inject a fake subroutine call to cctx_init */
1108 cctx_prepare (aTHX_ (coro_cctx *)arg); 1516 cctx_prepare (aTHX);
1109 1517
1110 /* cctx_run is the alternative tail of transfer() */ 1518 /* cctx_run is the alternative tail of transfer() */
1111 transfer_tail (aTHX); 1519 transfer_tail (aTHX);
1112 1520
1113 /* somebody or something will hit me for both perl_run and PL_restartop */ 1521 /* somebody or something will hit me for both perl_run and PL_restartop */
1114 PL_restartop = PL_op; 1522 PL_restartop = PL_op;
1115 perl_run (PL_curinterp); 1523 perl_run (PL_curinterp);
1524 /*
1525 * Unfortunately, there is no way to get at the return values of the
1526 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1527 * runtime errors here, as this is just a random interpreter, not a thread.
1528 */
1116 1529
1117 /* 1530 /*
1118 * If perl-run returns we assume exit() was being called or the coro 1531 * If perl-run returns we assume exit() was being called or the coro
1119 * fell off the end, which seems to be the only valid (non-bug) 1532 * fell off the end, which seems to be the only valid (non-bug)
1120 * reason for perl_run to return. We try to exit by jumping to the 1533 * reason for perl_run to return. We try to mimic whatever perl is normally
1121 * bootstrap-time "top" top_env, as we cannot restore the "main" 1534 * doing in that case. YMMV.
1122 * coroutine as Coro has no such concept
1123 */ 1535 */
1124 PL_top_env = main_top_env; 1536 perlish_exit (aTHX);
1125 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1126 } 1537 }
1127} 1538}
1128 1539
1129static coro_cctx * 1540static coro_cctx *
1130cctx_new () 1541cctx_new (void)
1131{ 1542{
1132 coro_cctx *cctx; 1543 coro_cctx *cctx;
1133 1544
1134 ++cctx_count; 1545 ++cctx_count;
1135 New (0, cctx, 1, coro_cctx); 1546 New (0, cctx, 1, coro_cctx);
… …
1141 return cctx; 1552 return cctx;
1142} 1553}
1143 1554
1144/* create a new cctx only suitable as source */ 1555/* create a new cctx only suitable as source */
1145static coro_cctx * 1556static coro_cctx *
1146cctx_new_empty () 1557cctx_new_empty (void)
1147{ 1558{
1148 coro_cctx *cctx = cctx_new (); 1559 coro_cctx *cctx = cctx_new ();
1149 1560
1150 cctx->sptr = 0; 1561 cctx->stack.sptr = 0;
1151 coro_create (&cctx->cctx, 0, 0, 0, 0); 1562 coro_create (&cctx->cctx, 0, 0, 0, 0);
1152 1563
1153 return cctx; 1564 return cctx;
1154} 1565}
1155 1566
1156/* create a new cctx suitable as destination/running a perl interpreter */ 1567/* create a new cctx suitable as destination/running a perl interpreter */
1157static coro_cctx * 1568static coro_cctx *
1158cctx_new_run () 1569cctx_new_run (void)
1159{ 1570{
1160 coro_cctx *cctx = cctx_new (); 1571 coro_cctx *cctx = cctx_new ();
1161 void *stack_start;
1162 size_t stack_size;
1163 1572
1164#if HAVE_MMAP 1573 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1165 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1166 /* mmap supposedly does allocate-on-write for us */
1167 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1168
1169 if (cctx->sptr != (void *)-1)
1170 {
1171 #if CORO_STACKGUARD
1172 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1173 #endif
1174 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1175 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1176 cctx->flags |= CC_MAPPED;
1177 } 1574 {
1178 else
1179#endif
1180 {
1181 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1182 New (0, cctx->sptr, cctx_stacksize, long);
1183
1184 if (!cctx->sptr)
1185 {
1186 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1575 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1187 _exit (EXIT_FAILURE); 1576 _exit (EXIT_FAILURE);
1188 }
1189
1190 stack_start = cctx->sptr;
1191 stack_size = cctx->ssize;
1192 } 1577 }
1193 1578
1194 #if CORO_USE_VALGRIND
1195 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1196 #endif
1197
1198 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1579 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1199 1580
1200 return cctx; 1581 return cctx;
1201} 1582}
1202 1583
1203static void 1584static void
1204cctx_destroy (coro_cctx *cctx) 1585cctx_destroy (coro_cctx *cctx)
1205{ 1586{
1206 if (!cctx) 1587 if (!cctx)
1207 return; 1588 return;
1208 1589
1590 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1591
1209 --cctx_count; 1592 --cctx_count;
1210 coro_destroy (&cctx->cctx); 1593 coro_destroy (&cctx->cctx);
1211 1594
1212 /* coro_transfer creates new, empty cctx's */ 1595 coro_stack_free (&cctx->stack);
1213 if (cctx->sptr)
1214 {
1215 #if CORO_USE_VALGRIND
1216 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1217 #endif
1218
1219#if HAVE_MMAP
1220 if (cctx->flags & CC_MAPPED)
1221 munmap (cctx->sptr, cctx->ssize);
1222 else
1223#endif
1224 Safefree (cctx->sptr);
1225 }
1226 1596
1227 Safefree (cctx); 1597 Safefree (cctx);
1228} 1598}
1229 1599
1230/* wether this cctx should be destructed */ 1600/* wether this cctx should be destructed */
1231#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1601#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1232 1602
1233static coro_cctx * 1603static coro_cctx *
1234cctx_get (pTHX) 1604cctx_get (pTHX)
1235{ 1605{
1236 while (expect_true (cctx_first)) 1606 while (ecb_expect_true (cctx_first))
1237 { 1607 {
1238 coro_cctx *cctx = cctx_first; 1608 coro_cctx *cctx = cctx_first;
1239 cctx_first = cctx->next; 1609 cctx_first = cctx->next;
1240 --cctx_idle; 1610 --cctx_idle;
1241 1611
1242 if (expect_true (!CCTX_EXPIRED (cctx))) 1612 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1243 return cctx; 1613 return cctx;
1244 1614
1245 cctx_destroy (cctx); 1615 cctx_destroy (cctx);
1246 } 1616 }
1247 1617
… …
1249} 1619}
1250 1620
1251static void 1621static void
1252cctx_put (coro_cctx *cctx) 1622cctx_put (coro_cctx *cctx)
1253{ 1623{
1254 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1624 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1255 1625
1256 /* free another cctx if overlimit */ 1626 /* free another cctx if overlimit */
1257 if (expect_false (cctx_idle >= cctx_max_idle)) 1627 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1258 { 1628 {
1259 coro_cctx *first = cctx_first; 1629 coro_cctx *first = cctx_first;
1260 cctx_first = first->next; 1630 cctx_first = first->next;
1261 --cctx_idle; 1631 --cctx_idle;
1262 1632
… …
1273static void 1643static void
1274transfer_check (pTHX_ struct coro *prev, struct coro *next) 1644transfer_check (pTHX_ struct coro *prev, struct coro *next)
1275{ 1645{
1276 /* TODO: throwing up here is considered harmful */ 1646 /* TODO: throwing up here is considered harmful */
1277 1647
1278 if (expect_true (prev != next)) 1648 if (ecb_expect_true (prev != next))
1279 { 1649 {
1280 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1650 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1281 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1651 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1282 1652
1283 if (expect_false (next->flags & CF_RUNNING)) 1653 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1284 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1285
1286 if (expect_false (next->flags & CF_DESTROYED))
1287 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1654 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1288 1655
1289#if !PERL_VERSION_ATLEAST (5,10,0) 1656#if !PERL_VERSION_ATLEAST (5,10,0)
1290 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1657 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1291 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1658 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1292#endif 1659#endif
1293 } 1660 }
1294} 1661}
1295 1662
1296/* always use the TRANSFER macro */ 1663/* always use the TRANSFER macro */
1297static void NOINLINE /* noinline so we have a fixed stackframe */ 1664static void ecb_noinline /* noinline so we have a fixed stackframe */
1298transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1665transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1299{ 1666{
1300 dSTACKLEVEL; 1667 dSTACKLEVEL;
1301 1668
1302 /* sometimes transfer is only called to set idle_sp */ 1669 /* sometimes transfer is only called to set idle_sp */
1303 if (expect_false (!next)) 1670 if (ecb_expect_false (!prev))
1304 { 1671 {
1305 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1672 cctx_current->idle_sp = STACKLEVEL;
1306 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1673 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1307 } 1674 }
1308 else if (expect_true (prev != next)) 1675 else if (ecb_expect_true (prev != next))
1309 { 1676 {
1310 coro_cctx *prev__cctx; 1677 coro_cctx *cctx_prev;
1311 1678
1312 if (expect_false (prev->flags & CF_NEW)) 1679 if (ecb_expect_false (prev->flags & CF_NEW))
1313 { 1680 {
1314 /* create a new empty/source context */ 1681 /* create a new empty/source context */
1315 prev->cctx = cctx_new_empty ();
1316 prev->flags &= ~CF_NEW; 1682 prev->flags &= ~CF_NEW;
1317 prev->flags |= CF_RUNNING; 1683 prev->flags |= CF_RUNNING;
1318 } 1684 }
1319 1685
1320 prev->flags &= ~CF_RUNNING; 1686 prev->flags &= ~CF_RUNNING;
1321 next->flags |= CF_RUNNING; 1687 next->flags |= CF_RUNNING;
1322 1688
1323 /* first get rid of the old state */ 1689 /* first get rid of the old state */
1324 save_perl (aTHX_ prev); 1690 save_perl (aTHX_ prev);
1325 1691
1326 if (expect_false (next->flags & CF_NEW)) 1692 if (ecb_expect_false (next->flags & CF_NEW))
1327 { 1693 {
1328 /* need to start coroutine */ 1694 /* need to start coroutine */
1329 next->flags &= ~CF_NEW; 1695 next->flags &= ~CF_NEW;
1330 /* setup coroutine call */ 1696 /* setup coroutine call */
1331 coro_setup (aTHX_ next); 1697 init_perl (aTHX_ next);
1332 } 1698 }
1333 else 1699 else
1334 load_perl (aTHX_ next); 1700 load_perl (aTHX_ next);
1335 1701
1336 prev__cctx = prev->cctx;
1337
1338 /* possibly untie and reuse the cctx */ 1702 /* possibly untie and reuse the cctx */
1339 if (expect_true ( 1703 if (ecb_expect_true (
1340 prev__cctx->idle_sp == (void *)stacklevel 1704 cctx_current->idle_sp == STACKLEVEL
1341 && !(prev__cctx->flags & CC_TRACE) 1705 && !(cctx_current->flags & CC_TRACE)
1342 && !force_cctx 1706 && !force_cctx
1343 )) 1707 ))
1344 { 1708 {
1345 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1709 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1346 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1710 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1347 1711
1348 prev->cctx = 0;
1349
1350 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1712 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1351 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1713 /* without this the next cctx_get might destroy the running cctx while still in use */
1352 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1714 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1353 if (!next->cctx) 1715 if (ecb_expect_true (!next->cctx))
1354 next->cctx = cctx_get (aTHX); 1716 next->cctx = cctx_get (aTHX);
1355 1717
1356 cctx_put (prev__cctx); 1718 cctx_put (cctx_current);
1357 } 1719 }
1720 else
1721 prev->cctx = cctx_current;
1358 1722
1359 ++next->usecount; 1723 ++next->usecount;
1360 1724
1361 if (expect_true (!next->cctx)) 1725 cctx_prev = cctx_current;
1362 next->cctx = cctx_get (aTHX); 1726 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1363 1727
1364 if (expect_false (prev__cctx != next->cctx)) 1728 next->cctx = 0;
1729
1730 if (ecb_expect_false (cctx_prev != cctx_current))
1365 { 1731 {
1366 prev__cctx->top_env = PL_top_env; 1732 cctx_prev->top_env = PL_top_env;
1367 PL_top_env = next->cctx->top_env; 1733 PL_top_env = cctx_current->top_env;
1368 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1734 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1369 } 1735 }
1370 1736
1371 transfer_tail (aTHX); 1737 transfer_tail (aTHX);
1372 } 1738 }
1373} 1739}
… …
1375#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1741#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1376#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1742#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1377 1743
1378/** high level stuff ********************************************************/ 1744/** high level stuff ********************************************************/
1379 1745
1746/* this function is actually Coro, not Coro::State, but we call it from here */
1747/* because it is convenient - but it hasn't been declared yet for that reason */
1380static int 1748static void
1749coro_call_on_destroy (pTHX_ struct coro *coro);
1750
1751static void
1381coro_state_destroy (pTHX_ struct coro *coro) 1752coro_state_destroy (pTHX_ struct coro *coro)
1382{ 1753{
1383 if (coro->flags & CF_DESTROYED) 1754 if (coro->flags & CF_ZOMBIE)
1384 return 0; 1755 return;
1385 1756
1386 if (coro->on_destroy)
1387 coro->on_destroy (aTHX_ coro); 1757 slf_destroy (aTHX_ coro);
1388 1758
1389 coro->flags |= CF_DESTROYED; 1759 coro->flags |= CF_ZOMBIE;
1390 1760
1391 if (coro->flags & CF_READY) 1761 if (coro->flags & CF_READY)
1392 { 1762 {
1393 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1763 /* reduce nready, as destroying a ready coro effectively unreadies it */
1394 /* alternative: look through all ready queues and remove the coro */ 1764 /* alternative: look through all ready queues and remove the coro */
1395 --coro_nready; 1765 --coro_nready;
1396 } 1766 }
1397 else 1767 else
1398 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1768 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1399 1769
1400 if (coro->mainstack && coro->mainstack != main_mainstack)
1401 {
1402 struct coro temp;
1403
1404 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1405
1406 save_perl (aTHX_ &temp);
1407 load_perl (aTHX_ coro);
1408
1409 coro_destruct (aTHX_ coro);
1410
1411 load_perl (aTHX_ &temp);
1412
1413 coro->slot = 0;
1414 }
1415
1416 cctx_destroy (coro->cctx);
1417 SvREFCNT_dec (coro->args);
1418
1419 if (coro->next) coro->next->prev = coro->prev; 1770 if (coro->next) coro->next->prev = coro->prev;
1420 if (coro->prev) coro->prev->next = coro->next; 1771 if (coro->prev) coro->prev->next = coro->next;
1421 if (coro == coro_first) coro_first = coro->next; 1772 if (coro == coro_first) coro_first = coro->next;
1422 1773
1423 return 1; 1774 if (coro->mainstack
1775 && coro->mainstack != main_mainstack
1776 && coro->slot
1777 && !PL_dirty)
1778 destroy_perl (aTHX_ coro);
1779
1780 cctx_destroy (coro->cctx);
1781 SvREFCNT_dec (coro->startcv);
1782 SvREFCNT_dec (coro->args);
1783 SvREFCNT_dec (coro->swap_sv);
1784 SvREFCNT_dec (CORO_THROW);
1785
1786 coro_call_on_destroy (aTHX_ coro);
1787
1788 /* more destruction mayhem in coro_state_free */
1424} 1789}
1425 1790
1426static int 1791static int
1427coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1792coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1428{ 1793{
1429 struct coro *coro = (struct coro *)mg->mg_ptr; 1794 struct coro *coro = (struct coro *)mg->mg_ptr;
1430 mg->mg_ptr = 0; 1795 mg->mg_ptr = 0;
1431 1796
1432 coro->hv = 0;
1433
1434 if (--coro->refcnt < 0)
1435 {
1436 coro_state_destroy (aTHX_ coro); 1797 coro_state_destroy (aTHX_ coro);
1798 SvREFCNT_dec (coro->on_destroy);
1799 SvREFCNT_dec (coro->status);
1800
1437 Safefree (coro); 1801 Safefree (coro);
1438 }
1439 1802
1440 return 0; 1803 return 0;
1441} 1804}
1442 1805
1443static int 1806static int ecb_cold
1444coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1807coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1445{ 1808{
1446 struct coro *coro = (struct coro *)mg->mg_ptr; 1809 /* called when perl clones the current process the slow way (windows process emulation) */
1447 1810 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1448 ++coro->refcnt; 1811 mg->mg_ptr = 0;
1812 mg->mg_virtual = 0;
1449 1813
1450 return 0; 1814 return 0;
1451} 1815}
1452 1816
1453static MGVTBL coro_state_vtbl = { 1817static MGVTBL coro_state_vtbl = {
… …
1478 TRANSFER (ta, 1); 1842 TRANSFER (ta, 1);
1479} 1843}
1480 1844
1481/** Coro ********************************************************************/ 1845/** Coro ********************************************************************/
1482 1846
1483INLINE void 1847ecb_inline void
1484coro_enq (pTHX_ struct coro *coro) 1848coro_enq (pTHX_ struct coro *coro)
1485{ 1849{
1486 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1850 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1487}
1488 1851
1489INLINE SV * 1852 SvREFCNT_inc_NN (coro->hv);
1853
1854 coro->next_ready = 0;
1855 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1856 ready [1] = coro;
1857}
1858
1859ecb_inline struct coro *
1490coro_deq (pTHX) 1860coro_deq (pTHX)
1491{ 1861{
1492 int prio; 1862 int prio;
1493 1863
1494 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1864 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1495 if (AvFILLp (coro_ready [prio]) >= 0) 1865 {
1496 return av_shift (coro_ready [prio]); 1866 struct coro **ready = coro_ready [prio];
1867
1868 if (ready [0])
1869 {
1870 struct coro *coro = ready [0];
1871 ready [0] = coro->next_ready;
1872 return coro;
1873 }
1874 }
1497 1875
1498 return 0; 1876 return 0;
1877}
1878
1879static void
1880invoke_sv_ready_hook_helper (void)
1881{
1882 dTHX;
1883 dSP;
1884
1885 ENTER;
1886 SAVETMPS;
1887
1888 PUSHMARK (SP);
1889 PUTBACK;
1890 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1891
1892 FREETMPS;
1893 LEAVE;
1499} 1894}
1500 1895
1501static int 1896static int
1502api_ready (pTHX_ SV *coro_sv) 1897api_ready (pTHX_ SV *coro_sv)
1503{ 1898{
1504 struct coro *coro;
1505 SV *sv_hook;
1506 void (*xs_hook)(void);
1507
1508 if (SvROK (coro_sv))
1509 coro_sv = SvRV (coro_sv);
1510
1511 coro = SvSTATE (coro_sv); 1899 struct coro *coro = SvSTATE (coro_sv);
1512 1900
1513 if (coro->flags & CF_READY) 1901 if (coro->flags & CF_READY)
1514 return 0; 1902 return 0;
1515 1903
1516 coro->flags |= CF_READY; 1904 coro->flags |= CF_READY;
1517 1905
1518 sv_hook = coro_nready ? 0 : coro_readyhook;
1519 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1520
1521 coro_enq (aTHX_ coro); 1906 coro_enq (aTHX_ coro);
1522 ++coro_nready;
1523 1907
1524 if (sv_hook) 1908 if (!coro_nready++)
1525 { 1909 if (coroapi.readyhook)
1526 dSP; 1910 coroapi.readyhook ();
1527
1528 ENTER;
1529 SAVETMPS;
1530
1531 PUSHMARK (SP);
1532 PUTBACK;
1533 call_sv (sv_hook, G_DISCARD);
1534 SPAGAIN;
1535
1536 FREETMPS;
1537 LEAVE;
1538 }
1539
1540 if (xs_hook)
1541 xs_hook ();
1542 1911
1543 return 1; 1912 return 1;
1544} 1913}
1545 1914
1546static int 1915static int
1547api_is_ready (pTHX_ SV *coro_sv) 1916api_is_ready (pTHX_ SV *coro_sv)
1548{ 1917{
1549 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1918 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1550} 1919}
1551 1920
1552INLINE void 1921/* expects to own a reference to next->hv */
1922ecb_inline void
1553prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1923prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1554{ 1924{
1555 SV *prev_sv, *next_sv;
1556
1557 for (;;)
1558 {
1559 next_sv = coro_deq (aTHX);
1560
1561 /* nothing to schedule: call the idle handler */
1562 if (expect_false (!next_sv))
1563 {
1564 dSP;
1565
1566 ENTER;
1567 SAVETMPS;
1568
1569 PUSHMARK (SP);
1570 PUTBACK;
1571 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1572 SPAGAIN;
1573
1574 FREETMPS;
1575 LEAVE;
1576 continue;
1577 }
1578
1579 ta->next = SvSTATE_hv (next_sv);
1580
1581 /* cannot transfer to destroyed coros, skip and look for next */
1582 if (expect_false (ta->next->flags & CF_DESTROYED))
1583 {
1584 SvREFCNT_dec (next_sv);
1585 /* coro_nready has already been taken care of by destroy */
1586 continue;
1587 }
1588
1589 --coro_nready;
1590 break;
1591 }
1592
1593 /* free this only after the transfer */
1594 prev_sv = SvRV (coro_current); 1925 SV *prev_sv = SvRV (coro_current);
1926
1595 ta->prev = SvSTATE_hv (prev_sv); 1927 ta->prev = SvSTATE_hv (prev_sv);
1928 ta->next = next;
1929
1596 TRANSFER_CHECK (*ta); 1930 TRANSFER_CHECK (*ta);
1597 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1931
1598 ta->next->flags &= ~CF_READY;
1599 SvRV_set (coro_current, next_sv); 1932 SvRV_set (coro_current, (SV *)next->hv);
1600 1933
1601 free_coro_mortal (aTHX); 1934 free_coro_mortal (aTHX);
1602 coro_mortal = prev_sv; 1935 coro_mortal = prev_sv;
1603} 1936}
1604 1937
1605INLINE void 1938static void
1939prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1940{
1941 for (;;)
1942 {
1943 struct coro *next = coro_deq (aTHX);
1944
1945 if (ecb_expect_true (next))
1946 {
1947 /* cannot transfer to destroyed coros, skip and look for next */
1948 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1949 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1950 else
1951 {
1952 next->flags &= ~CF_READY;
1953 --coro_nready;
1954
1955 prepare_schedule_to (aTHX_ ta, next);
1956 break;
1957 }
1958 }
1959 else
1960 {
1961 /* nothing to schedule: call the idle handler */
1962 if (SvROK (sv_idle)
1963 && SvOBJECT (SvRV (sv_idle)))
1964 {
1965 if (SvRV (sv_idle) == SvRV (coro_current))
1966 {
1967 require_pv ("Carp");
1968
1969 {
1970 dSP;
1971
1972 ENTER;
1973 SAVETMPS;
1974
1975 PUSHMARK (SP);
1976 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
1977 PUTBACK;
1978 call_pv ("Carp::confess", G_VOID | G_DISCARD);
1979
1980 FREETMPS;
1981 LEAVE;
1982 }
1983 }
1984
1985 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1986 api_ready (aTHX_ SvRV (sv_idle));
1987 --coro_nready;
1988 }
1989 else
1990 {
1991 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1992 dSP;
1993
1994 ENTER;
1995 SAVETMPS;
1996
1997 PUSHMARK (SP);
1998 PUTBACK;
1999 call_sv (sv_idle, G_VOID | G_DISCARD);
2000
2001 FREETMPS;
2002 LEAVE;
2003 }
2004 }
2005 }
2006}
2007
2008ecb_inline void
1606prepare_cede (pTHX_ struct coro_transfer_args *ta) 2009prepare_cede (pTHX_ struct coro_transfer_args *ta)
1607{ 2010{
1608 api_ready (aTHX_ coro_current); 2011 api_ready (aTHX_ coro_current);
1609 prepare_schedule (aTHX_ ta); 2012 prepare_schedule (aTHX_ ta);
1610} 2013}
1611 2014
1612INLINE void 2015ecb_inline void
1613prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2016prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1614{ 2017{
1615 SV *prev = SvRV (coro_current); 2018 SV *prev = SvRV (coro_current);
1616 2019
1617 if (coro_nready) 2020 if (coro_nready)
… …
1630 2033
1631 prepare_schedule (aTHX_ &ta); 2034 prepare_schedule (aTHX_ &ta);
1632 TRANSFER (ta, 1); 2035 TRANSFER (ta, 1);
1633} 2036}
1634 2037
2038static void
2039api_schedule_to (pTHX_ SV *coro_sv)
2040{
2041 struct coro_transfer_args ta;
2042 struct coro *next = SvSTATE (coro_sv);
2043
2044 SvREFCNT_inc_NN (coro_sv);
2045 prepare_schedule_to (aTHX_ &ta, next);
2046}
2047
1635static int 2048static int
1636api_cede (pTHX) 2049api_cede (pTHX)
1637{ 2050{
1638 struct coro_transfer_args ta; 2051 struct coro_transfer_args ta;
1639 2052
1640 prepare_cede (aTHX_ &ta); 2053 prepare_cede (aTHX_ &ta);
1641 2054
1642 if (expect_true (ta.prev != ta.next)) 2055 if (ecb_expect_true (ta.prev != ta.next))
1643 { 2056 {
1644 TRANSFER (ta, 1); 2057 TRANSFER (ta, 1);
1645 return 1; 2058 return 1;
1646 } 2059 }
1647 else 2060 else
… …
1666static void 2079static void
1667api_trace (pTHX_ SV *coro_sv, int flags) 2080api_trace (pTHX_ SV *coro_sv, int flags)
1668{ 2081{
1669 struct coro *coro = SvSTATE (coro_sv); 2082 struct coro *coro = SvSTATE (coro_sv);
1670 2083
2084 if (coro->flags & CF_RUNNING)
2085 croak ("cannot enable tracing on a running coroutine, caught");
2086
1671 if (flags & CC_TRACE) 2087 if (flags & CC_TRACE)
1672 { 2088 {
1673 if (!coro->cctx) 2089 if (!coro->cctx)
1674 coro->cctx = cctx_new_run (); 2090 coro->cctx = cctx_new_run ();
1675 else if (!(coro->cctx->flags & CC_TRACE)) 2091 else if (!(coro->cctx->flags & CC_TRACE))
1676 croak ("cannot enable tracing on coroutine with custom stack,"); 2092 croak ("cannot enable tracing on coroutine with custom stack, caught");
1677 2093
1678 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2094 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1679 } 2095 }
1680 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2096 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1681 { 2097 {
… …
1684 if (coro->flags & CF_RUNNING) 2100 if (coro->flags & CF_RUNNING)
1685 PL_runops = RUNOPS_DEFAULT; 2101 PL_runops = RUNOPS_DEFAULT;
1686 else 2102 else
1687 coro->slot->runops = RUNOPS_DEFAULT; 2103 coro->slot->runops = RUNOPS_DEFAULT;
1688 } 2104 }
2105}
2106
2107static void
2108coro_push_av (pTHX_ AV *av, I32 gimme_v)
2109{
2110 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2111 {
2112 dSP;
2113
2114 if (gimme_v == G_SCALAR)
2115 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2116 else
2117 {
2118 int i;
2119 EXTEND (SP, AvFILLp (av) + 1);
2120
2121 for (i = 0; i <= AvFILLp (av); ++i)
2122 PUSHs (AvARRAY (av)[i]);
2123 }
2124
2125 PUTBACK;
2126 }
2127}
2128
2129static void
2130coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2131{
2132 if (!coro->on_destroy)
2133 coro->on_destroy = newAV ();
2134
2135 av_push (coro->on_destroy, cb);
2136}
2137
2138static void
2139slf_destroy_join (pTHX_ struct CoroSLF *frame)
2140{
2141 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2142}
2143
2144static int
2145slf_check_join (pTHX_ struct CoroSLF *frame)
2146{
2147 struct coro *coro = (struct coro *)frame->data;
2148
2149 if (!coro->status)
2150 return 1;
2151
2152 frame->destroy = 0;
2153
2154 coro_push_av (aTHX_ coro->status, GIMME_V);
2155
2156 SvREFCNT_dec ((SV *)coro->hv);
2157
2158 return 0;
2159}
2160
2161static void
2162slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2163{
2164 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2165
2166 if (items > 1)
2167 croak ("join called with too many arguments");
2168
2169 if (coro->status)
2170 frame->prepare = prepare_nop;
2171 else
2172 {
2173 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2174 frame->prepare = prepare_schedule;
2175 }
2176
2177 frame->check = slf_check_join;
2178 frame->destroy = slf_destroy_join;
2179 frame->data = (void *)coro;
2180 SvREFCNT_inc (coro->hv);
2181}
2182
2183static void
2184coro_call_on_destroy (pTHX_ struct coro *coro)
2185{
2186 AV *od = coro->on_destroy;
2187
2188 if (!od)
2189 return;
2190
2191 coro->on_destroy = 0;
2192 sv_2mortal ((SV *)od);
2193
2194 while (AvFILLp (od) >= 0)
2195 {
2196 SV *cb = sv_2mortal (av_pop (od));
2197
2198 /* coro hv's (and only hv's at the moment) are supported as well */
2199 if (SvSTATEhv_p (aTHX_ cb))
2200 api_ready (aTHX_ cb);
2201 else
2202 {
2203 dSP; /* don't disturb outer sp */
2204 PUSHMARK (SP);
2205
2206 if (coro->status)
2207 {
2208 PUTBACK;
2209 coro_push_av (aTHX_ coro->status, G_ARRAY);
2210 SPAGAIN;
2211 }
2212
2213 PUTBACK;
2214 call_sv (cb, G_VOID | G_DISCARD);
2215 }
2216 }
2217}
2218
2219static void
2220coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2221{
2222 AV *av;
2223
2224 if (coro->status)
2225 {
2226 av = coro->status;
2227 av_clear (av);
2228 }
2229 else
2230 av = coro->status = newAV ();
2231
2232 /* items are actually not so common, so optimise for this case */
2233 if (items)
2234 {
2235 int i;
2236
2237 av_extend (av, items - 1);
2238
2239 for (i = 0; i < items; ++i)
2240 av_push (av, SvREFCNT_inc_NN (arg [i]));
2241 }
2242}
2243
2244static void
2245slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2246{
2247 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2248 api_ready (aTHX_ sv_manager);
2249
2250 frame->prepare = prepare_schedule;
2251 frame->check = slf_check_repeat;
2252
2253 /* as a minor optimisation, we could unwind all stacks here */
2254 /* but that puts extra pressure on pp_slf, and is not worth much */
2255 /*coro_unwind_stacks (aTHX);*/
2256}
2257
2258static void
2259slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2260{
2261 HV *coro_hv = (HV *)SvRV (coro_current);
2262
2263 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2264 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2265}
2266
2267static void
2268slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2269{
2270 HV *coro_hv;
2271 struct coro *coro;
2272
2273 if (items <= 0)
2274 croak ("Coro::cancel called without coro object,");
2275
2276 coro = SvSTATE (arg [0]);
2277 coro_hv = coro->hv;
2278
2279 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2280
2281 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2282 {
2283 /* coro currently busy cancelling something, so just notify it */
2284 coro->slf_frame.data = (void *)coro;
2285
2286 frame->prepare = prepare_nop;
2287 frame->check = slf_check_nop;
2288 }
2289 else if (coro_hv == (HV *)SvRV (coro_current))
2290 {
2291 /* cancelling the current coro is allowed, and equals terminate */
2292 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2293 }
2294 else
2295 {
2296 struct coro *self = SvSTATE_current;
2297
2298 if (!self)
2299 croak ("Coro::cancel called outside of thread content,");
2300
2301 /* otherwise we cancel directly, purely for speed reasons
2302 * unfortunately, this requires some magic trickery, as
2303 * somebody else could cancel us, so we have to fight the cancellation.
2304 * this is ugly, and hopefully fully worth the extra speed.
2305 * besides, I can't get the slow-but-safe version working...
2306 */
2307 slf_frame.data = 0;
2308 self->flags |= CF_NOCANCEL;
2309 coro_state_destroy (aTHX_ coro);
2310 self->flags &= ~CF_NOCANCEL;
2311
2312 if (slf_frame.data)
2313 {
2314 /* while we were busy we have been cancelled, so terminate */
2315 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2316 }
2317 else
2318 {
2319 frame->prepare = prepare_nop;
2320 frame->check = slf_check_nop;
2321 }
2322 }
2323}
2324
2325static int
2326slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2327{
2328 frame->prepare = 0;
2329 coro_unwind_stacks (aTHX);
2330
2331 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2332
2333 return 1;
2334}
2335
2336static int
2337safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2338{
2339 if (coro->cctx)
2340 croak ("coro inside C callback, unable to cancel at this time, caught");
2341
2342 if (coro->flags & CF_NEW)
2343 {
2344 coro_set_status (aTHX_ coro, arg, items);
2345 coro_state_destroy (aTHX_ coro);
2346 }
2347 else
2348 {
2349 if (!coro->slf_frame.prepare)
2350 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2351
2352 slf_destroy (aTHX_ coro);
2353
2354 coro_set_status (aTHX_ coro, arg, items);
2355 coro->slf_frame.prepare = prepare_nop;
2356 coro->slf_frame.check = slf_check_safe_cancel;
2357
2358 api_ready (aTHX_ (SV *)coro->hv);
2359 }
2360
2361 return 1;
2362}
2363
2364/*****************************************************************************/
2365/* async pool handler */
2366
2367static int
2368slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2369{
2370 HV *hv = (HV *)SvRV (coro_current);
2371 struct coro *coro = (struct coro *)frame->data;
2372
2373 if (!coro->invoke_cb)
2374 return 1; /* loop till we have invoke */
2375 else
2376 {
2377 hv_store (hv, "desc", sizeof ("desc") - 1,
2378 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2379
2380 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2381
2382 {
2383 dSP;
2384 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2385 PUTBACK;
2386 }
2387
2388 SvREFCNT_dec (GvAV (PL_defgv));
2389 GvAV (PL_defgv) = coro->invoke_av;
2390 coro->invoke_av = 0;
2391
2392 return 0;
2393 }
2394}
2395
2396static void
2397slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2398{
2399 HV *hv = (HV *)SvRV (coro_current);
2400 struct coro *coro = SvSTATE_hv ((SV *)hv);
2401
2402 if (ecb_expect_true (coro->saved_deffh))
2403 {
2404 /* subsequent iteration */
2405 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2406 coro->saved_deffh = 0;
2407
2408 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2409 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2410 {
2411 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2412 return;
2413 }
2414 else
2415 {
2416 av_clear (GvAV (PL_defgv));
2417 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2418
2419 coro->prio = 0;
2420
2421 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2422 api_trace (aTHX_ coro_current, 0);
2423
2424 frame->prepare = prepare_schedule;
2425 av_push (av_async_pool, SvREFCNT_inc (hv));
2426 }
2427 }
2428 else
2429 {
2430 /* first iteration, simply fall through */
2431 frame->prepare = prepare_nop;
2432 }
2433
2434 frame->check = slf_check_pool_handler;
2435 frame->data = (void *)coro;
2436}
2437
2438/*****************************************************************************/
2439/* rouse callback */
2440
2441#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2442
2443static void
2444coro_rouse_callback (pTHX_ CV *cv)
2445{
2446 dXSARGS;
2447 SV *data = (SV *)S_GENSUB_ARG;
2448
2449 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2450 {
2451 /* first call, set args */
2452 SV *coro = SvRV (data);
2453 AV *av = newAV ();
2454
2455 SvRV_set (data, (SV *)av);
2456
2457 /* better take a full copy of the arguments */
2458 while (items--)
2459 av_store (av, items, newSVsv (ST (items)));
2460
2461 api_ready (aTHX_ coro);
2462 SvREFCNT_dec (coro);
2463 }
2464
2465 XSRETURN_EMPTY;
2466}
2467
2468static int
2469slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2470{
2471 SV *data = (SV *)frame->data;
2472
2473 if (CORO_THROW)
2474 return 0;
2475
2476 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2477 return 1;
2478
2479 /* now push all results on the stack */
2480 {
2481 dSP;
2482 AV *av = (AV *)SvRV (data);
2483 int i;
2484
2485 EXTEND (SP, AvFILLp (av) + 1);
2486 for (i = 0; i <= AvFILLp (av); ++i)
2487 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2488
2489 /* we have stolen the elements, so set length to zero and free */
2490 AvFILLp (av) = -1;
2491 av_undef (av);
2492
2493 PUTBACK;
2494 }
2495
2496 return 0;
2497}
2498
2499static void
2500slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2501{
2502 SV *cb;
2503
2504 if (items)
2505 cb = arg [0];
2506 else
2507 {
2508 struct coro *coro = SvSTATE_current;
2509
2510 if (!coro->rouse_cb)
2511 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2512
2513 cb = sv_2mortal (coro->rouse_cb);
2514 coro->rouse_cb = 0;
2515 }
2516
2517 if (!SvROK (cb)
2518 || SvTYPE (SvRV (cb)) != SVt_PVCV
2519 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2520 croak ("Coro::rouse_wait called with illegal callback argument,");
2521
2522 {
2523 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2524 SV *data = (SV *)S_GENSUB_ARG;
2525
2526 frame->data = (void *)data;
2527 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2528 frame->check = slf_check_rouse_wait;
2529 }
2530}
2531
2532static SV *
2533coro_new_rouse_cb (pTHX)
2534{
2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv (hv);
2537 SV *data = newRV_inc ((SV *)hv);
2538 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2539
2540 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2541 SvREFCNT_dec (data); /* magicext increases the refcount */
2542
2543 SvREFCNT_dec (coro->rouse_cb);
2544 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2545
2546 return cb;
1689} 2547}
1690 2548
1691/*****************************************************************************/ 2549/*****************************************************************************/
1692/* schedule-like-function opcode (SLF) */ 2550/* schedule-like-function opcode (SLF) */
1693 2551
… …
1717 2575
1718 RETURNOP (slf_restore.op_first); 2576 RETURNOP (slf_restore.op_first);
1719} 2577}
1720 2578
1721static void 2579static void
1722slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1723{
1724 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1725}
1726
1727static void
1728slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1729{
1730 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1731
1732 frame->prepare = slf_prepare_set_stacklevel;
1733 frame->check = slf_check_nop;
1734 frame->data = (void *)SvIV (arg [0]);
1735}
1736
1737static void
1738slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2580slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1739{ 2581{
1740 SV **arg = (SV **)slf_frame.data; 2582 SV **arg = (SV **)slf_frame.data;
1741 2583
1742 prepare_transfer (aTHX_ ta, arg [0], arg [1]); 2584 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
… …
1759 frame->prepare = prepare_schedule; 2601 frame->prepare = prepare_schedule;
1760 frame->check = slf_check_nop; 2602 frame->check = slf_check_nop;
1761} 2603}
1762 2604
1763static void 2605static void
2606slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2607{
2608 struct coro *next = (struct coro *)slf_frame.data;
2609
2610 SvREFCNT_inc_NN (next->hv);
2611 prepare_schedule_to (aTHX_ ta, next);
2612}
2613
2614static void
2615slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2616{
2617 if (!items)
2618 croak ("Coro::schedule_to expects a coroutine argument, caught");
2619
2620 frame->data = (void *)SvSTATE (arg [0]);
2621 frame->prepare = slf_prepare_schedule_to;
2622 frame->check = slf_check_nop;
2623}
2624
2625static void
2626slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2627{
2628 api_ready (aTHX_ SvRV (coro_current));
2629
2630 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2631}
2632
2633static void
1764slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2634slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1765{ 2635{
1766 frame->prepare = prepare_cede; 2636 frame->prepare = prepare_cede;
1767 frame->check = slf_check_nop; 2637 frame->check = slf_check_nop;
1768} 2638}
… …
1772{ 2642{
1773 frame->prepare = prepare_cede_notself; 2643 frame->prepare = prepare_cede_notself;
1774 frame->check = slf_check_nop; 2644 frame->check = slf_check_nop;
1775} 2645}
1776 2646
1777/* we hijack an hopefully unused CV flag for our purposes */ 2647/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
1778#define CVf_SLF 0x4000 2648static void
2649slf_destroy (pTHX_ struct coro *coro)
2650{
2651 struct CoroSLF frame = coro->slf_frame;
2652
2653 /*
2654 * The on_destroy below most likely is from an SLF call.
2655 * Since by definition the SLF call will not finish when we destroy
2656 * the coro, we will have to force-finish it here, otherwise
2657 * cleanup functions cannot call SLF functions.
2658 */
2659 coro->slf_frame.prepare = 0;
2660
2661 /* this callback is reserved for slf functions needing to do cleanup */
2662 if (frame.destroy && frame.prepare && !PL_dirty)
2663 frame.destroy (aTHX_ &frame);
2664}
1779 2665
1780/* 2666/*
1781 * these not obviously related functions are all rolled into one 2667 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same 2668 * function to increase chances that they all will call transfer with the same
1783 * stack offset 2669 * stack offset
… …
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2675 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790 2676
1791 /* set up the slf frame, unless it has already been set-up */ 2677 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */ 2678 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */ 2679 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare)) 2680 if (ecb_expect_true (!slf_frame.prepare))
1795 { 2681 {
1796 /* first iteration */ 2682 /* first iteration */
1797 dSP; 2683 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1; 2684 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */ 2685 int items = SP - arg; /* args without function object */
… …
1839 } 2725 }
1840 while (slf_frame.check (aTHX_ &slf_frame)); 2726 while (slf_frame.check (aTHX_ &slf_frame));
1841 2727
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2728 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843 2729
1844 /* return value handling - mostly like entersub */
1845 {
1846 dSP;
1847 SV **bot = PL_stack_base + checkmark;
1848 int gimme = GIMME_V;
1849
1850 /* make sure we put something on the stack in scalar context */
1851 if (gimme == G_SCALAR)
1852 {
1853 if (sp == bot)
1854 XPUSHs (&PL_sv_undef);
1855
1856 SP = bot + 1;
1857 }
1858
1859 PUTBACK;
1860 }
1861
1862 /* exception handling */ 2730 /* exception handling */
1863 if (expect_false (coro_throw)) 2731 if (ecb_expect_false (CORO_THROW))
1864 { 2732 {
1865 SV *exception = sv_2mortal (coro_throw); 2733 SV *exception = sv_2mortal (CORO_THROW);
1866 2734
1867 coro_throw = 0; 2735 CORO_THROW = 0;
1868 sv_setsv (ERRSV, exception); 2736 sv_setsv (ERRSV, exception);
1869 croak (0); 2737 croak (0);
2738 }
2739
2740 /* return value handling - mostly like entersub */
2741 /* make sure we put something on the stack in scalar context */
2742 if (GIMME_V == G_SCALAR
2743 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2744 {
2745 dSP;
2746 SV **bot = PL_stack_base + checkmark;
2747
2748 if (sp == bot) /* too few, push undef */
2749 bot [1] = &PL_sv_undef;
2750 else /* too many, take last one */
2751 bot [1] = *sp;
2752
2753 SP = bot + 1;
2754
2755 PUTBACK;
1870 } 2756 }
1871 2757
1872 return NORMAL; 2758 return NORMAL;
1873} 2759}
1874 2760
… …
1902 if (PL_op->op_flags & OPf_STACKED) 2788 if (PL_op->op_flags & OPf_STACKED)
1903 { 2789 {
1904 if (items > slf_arga) 2790 if (items > slf_arga)
1905 { 2791 {
1906 slf_arga = items; 2792 slf_arga = items;
1907 free (slf_argv); 2793 Safefree (slf_argv);
1908 slf_argv = malloc (slf_arga * sizeof (SV *)); 2794 New (0, slf_argv, slf_arga, SV *);
1909 } 2795 }
1910 2796
1911 slf_argc = items; 2797 slf_argc = items;
1912 2798
1913 for (i = 0; i < items; ++i) 2799 for (i = 0; i < items; ++i)
… …
1915 } 2801 }
1916 else 2802 else
1917 slf_argc = 0; 2803 slf_argc = 0;
1918 2804
1919 PL_op->op_ppaddr = pp_slf; 2805 PL_op->op_ppaddr = pp_slf;
1920 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2806 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1921 2807
1922 PL_op = (OP *)&slf_restore; 2808 PL_op = (OP *)&slf_restore;
2809}
2810
2811/*****************************************************************************/
2812/* dynamic wind */
2813
2814static void
2815on_enterleave_call (pTHX_ SV *cb)
2816{
2817 dSP;
2818
2819 PUSHSTACK;
2820
2821 PUSHMARK (SP);
2822 PUTBACK;
2823 call_sv (cb, G_VOID | G_DISCARD);
2824 SPAGAIN;
2825
2826 POPSTACK;
2827}
2828
2829static SV *
2830coro_avp_pop_and_free (pTHX_ AV **avp)
2831{
2832 AV *av = *avp;
2833 SV *res = av_pop (av);
2834
2835 if (AvFILLp (av) < 0)
2836 {
2837 *avp = 0;
2838 SvREFCNT_dec (av);
2839 }
2840
2841 return res;
2842}
2843
2844static void
2845coro_pop_on_enter (pTHX_ void *coro)
2846{
2847 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2848 SvREFCNT_dec (cb);
2849}
2850
2851static void
2852coro_pop_on_leave (pTHX_ void *coro)
2853{
2854 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2855 on_enterleave_call (aTHX_ sv_2mortal (cb));
2856}
2857
2858static void
2859enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2860{
2861 if (!hook)
2862 return;
2863
2864 if (!*avp)
2865 {
2866 *avp = newAV ();
2867 AvREAL_off (*avp);
2868 }
2869
2870 av_push (*avp, (SV *)hook);
2871 av_push (*avp, (SV *)arg);
2872}
2873
2874static void
2875enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2876{
2877 AV *av = *avp;
2878 int i;
2879
2880 if (!av)
2881 return;
2882
2883 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2884 if (AvARRAY (av)[i] == (SV *)hook)
2885 {
2886 if (execute)
2887 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2888
2889 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2890 av_pop (av);
2891 av_pop (av);
2892 break;
2893 }
2894
2895 if (AvFILLp (av) >= 0)
2896 {
2897 *avp = 0;
2898 SvREFCNT_dec_NN (av);
2899 }
2900}
2901
2902static void
2903api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2904{
2905 struct coro *coro = SvSTATE (coro_sv);
2906
2907 if (SvSTATE_current == coro)
2908 if (enter)
2909 enter (aTHX_ enter_arg);
2910
2911 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2912 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2913}
2914
2915static void
2916api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2917{
2918 struct coro *coro = SvSTATE (coro_sv);
2919
2920 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2921 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2922}
2923
2924static void
2925savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2926{
2927 struct coro *coro = SvSTATE_current;
2928
2929 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2930}
2931
2932static void
2933savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2934{
2935 struct coro *coro = SvSTATE_current;
2936
2937 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2938}
2939
2940static void
2941api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2942{
2943 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2944
2945 /* this ought to be much cheaper than malloc + a single destructor call */
2946 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2947 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
1923} 2948}
1924 2949
1925/*****************************************************************************/ 2950/*****************************************************************************/
1926/* PerlIO::cede */ 2951/* PerlIO::cede */
1927 2952
… …
1929{ 2954{
1930 PerlIOBuf base; 2955 PerlIOBuf base;
1931 NV next, every; 2956 NV next, every;
1932} PerlIOCede; 2957} PerlIOCede;
1933 2958
1934static IV 2959static IV ecb_cold
1935PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2960PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1936{ 2961{
1937 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2962 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1938 2963
1939 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2964 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1940 self->next = nvtime () + self->every; 2965 self->next = nvtime () + self->every;
1941 2966
1942 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2967 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1943} 2968}
1944 2969
1945static SV * 2970static SV * ecb_cold
1946PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2971PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1947{ 2972{
1948 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2973 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1949 2974
1950 return newSVnv (self->every); 2975 return newSVnv (self->every);
… …
1996 PerlIOBuf_get_cnt, 3021 PerlIOBuf_get_cnt,
1997 PerlIOBuf_set_ptrcnt, 3022 PerlIOBuf_set_ptrcnt,
1998}; 3023};
1999 3024
2000/*****************************************************************************/ 3025/*****************************************************************************/
3026/* Coro::Semaphore & Coro::Signal */
3027
3028static SV *
3029coro_waitarray_new (pTHX_ int count)
3030{
3031 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3032 AV *av = newAV ();
3033 SV **ary;
3034
3035 /* unfortunately, building manually saves memory */
3036 Newx (ary, 2, SV *);
3037 AvALLOC (av) = ary;
3038#if PERL_VERSION_ATLEAST (5,10,0)
3039 AvARRAY (av) = ary;
3040#else
3041 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3042 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3043 SvPVX ((SV *)av) = (char *)ary;
3044#endif
3045 AvMAX (av) = 1;
3046 AvFILLp (av) = 0;
3047 ary [0] = newSViv (count);
3048
3049 return newRV_noinc ((SV *)av);
3050}
3051
2001/* Coro::Semaphore */ 3052/* semaphore */
2002 3053
2003static void 3054static void
2004coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 3055coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2005{ 3056{
2006 SV *count_sv = AvARRAY (av)[0]; 3057 SV *count_sv = AvARRAY (av)[0];
… …
2018 AvARRAY (av)[0] = AvARRAY (av)[1]; 3069 AvARRAY (av)[0] = AvARRAY (av)[1];
2019 AvARRAY (av)[1] = count_sv; 3070 AvARRAY (av)[1] = count_sv;
2020 cb = av_shift (av); 3071 cb = av_shift (av);
2021 3072
2022 if (SvOBJECT (cb)) 3073 if (SvOBJECT (cb))
3074 {
2023 api_ready (aTHX_ cb); 3075 api_ready (aTHX_ cb);
2024 else 3076 --count;
2025 croak ("callbacks not yet supported"); 3077 }
3078 else if (SvTYPE (cb) == SVt_PVCV)
3079 {
3080 dSP;
3081 PUSHMARK (SP);
3082 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3083 PUTBACK;
3084 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3085 }
2026 3086
2027 SvREFCNT_dec (cb); 3087 SvREFCNT_dec_NN (cb);
2028
2029 --count;
2030 } 3088 }
2031} 3089}
2032 3090
2033static void 3091static void
2034coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3092coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2035{ 3093{
2036 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3094 /* call $sem->adjust (0) to possibly wake up some other waiters */
2037 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3095 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2038} 3096}
2039 3097
2040static int 3098static int
2041slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3099slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2042{ 3100{
2043 AV *av = (AV *)frame->data; 3101 AV *av = (AV *)frame->data;
2044 SV *count_sv = AvARRAY (av)[0]; 3102 SV *count_sv = AvARRAY (av)[0];
3103 SV *coro_hv = SvRV (coro_current);
2045 3104
3105 frame->destroy = 0;
3106
3107 /* if we are about to throw, don't actually acquire the lock, just throw */
3108 if (ecb_expect_false (CORO_THROW))
3109 {
3110 /* we still might be responsible for the semaphore, so wake up others */
3111 coro_semaphore_adjust (aTHX_ av, 0);
3112
3113 return 0;
3114 }
2046 if (SvIVX (count_sv) > 0) 3115 else if (SvIVX (count_sv) > 0)
2047 { 3116 {
2048 SvSTATE_current->on_destroy = 0; 3117 if (acquire)
2049 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3118 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3119 else
3120 coro_semaphore_adjust (aTHX_ av, 0);
3121
2050 return 0; 3122 return 0;
2051 } 3123 }
2052 else 3124 else
2053 { 3125 {
2054 int i; 3126 int i;
2055 /* if we were woken up but can't down, we look through the whole */ 3127 /* if we were woken up but can't down, we look through the whole */
2056 /* waiters list and only add us if we aren't in there already */ 3128 /* waiters list and only add us if we aren't in there already */
2057 /* this avoids some degenerate memory usage cases */ 3129 /* this avoids some degenerate memory usage cases */
2058 3130 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2059 for (i = 1; i <= AvFILLp (av); ++i)
2060 if (AvARRAY (av)[i] == SvRV (coro_current)) 3131 if (AvARRAY (av)[i] == coro_hv)
2061 return 1; 3132 return 1;
2062 3133
2063 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3134 av_push (av, SvREFCNT_inc (coro_hv));
2064 return 1; 3135 return 1;
2065 } 3136 }
2066} 3137}
2067 3138
2068static void 3139static int
3140slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3141{
3142 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3143}
3144
3145static int
3146slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3147{
3148 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3149}
3150
3151static void
2069slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3152slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2070{ 3153{
2071 AV *av = (AV *)SvRV (arg [0]); 3154 AV *av = (AV *)SvRV (arg [0]);
2072 3155
2073 if (SvIVX (AvARRAY (av)[0]) > 0) 3156 if (SvIVX (AvARRAY (av)[0]) > 0)
2074 { 3157 {
2075 frame->data = (void *)av; 3158 frame->data = (void *)av;
2076 frame->prepare = prepare_nop; 3159 frame->prepare = prepare_nop;
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 } 3160 }
2079 else 3161 else
2080 { 3162 {
2081 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3163 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2082 3164
2083 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3165 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2084 frame->prepare = prepare_schedule; 3166 frame->prepare = prepare_schedule;
2085
2086 /* to avoid race conditions when a woken-up coro gets terminated */ 3167 /* to avoid race conditions when a woken-up coro gets terminated */
2087 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3168 /* we arrange for a temporary on_destroy that calls adjust (0) */
2088 assert (!SvSTATE_current->on_destroy);//D
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3169 frame->destroy = coro_semaphore_destroy;
2090 } 3170 }
3171}
2091 3172
3173static void
3174slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3175{
3176 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2092 frame->check = slf_check_semaphore_down; 3177 frame->check = slf_check_semaphore_down;
2093
2094} 3178}
2095 3179
2096/*****************************************************************************/ 3180static void
2097/* gensub: simple closure generation utility */ 3181slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 3182{
2107 CV *cv = (CV *)newSV (0); 3183 if (items >= 2)
3184 {
3185 /* callback form */
3186 AV *av = (AV *)SvRV (arg [0]);
3187 SV *cb_cv = s_get_cv_croak (arg [1]);
2108 3188
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 3189 av_push (av, SvREFCNT_inc_NN (cb_cv));
2110 3190
2111 CvANON_on (cv); 3191 if (SvIVX (AvARRAY (av)[0]) > 0)
2112 CvISXSUB_on (cv); 3192 coro_semaphore_adjust (aTHX_ av, 0);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 3193
2116 return newRV_noinc ((SV *)cv); 3194 frame->prepare = prepare_nop;
3195 frame->check = slf_check_nop;
3196 }
3197 else
3198 {
3199 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3200 frame->check = slf_check_semaphore_wait;
3201 }
3202}
3203
3204/* signal */
3205
3206static void
3207coro_signal_wake (pTHX_ AV *av, int count)
3208{
3209 SvIVX (AvARRAY (av)[0]) = 0;
3210
3211 /* now signal count waiters */
3212 while (count > 0 && AvFILLp (av) > 0)
3213 {
3214 SV *cb;
3215
3216 /* swap first two elements so we can shift a waiter */
3217 cb = AvARRAY (av)[0];
3218 AvARRAY (av)[0] = AvARRAY (av)[1];
3219 AvARRAY (av)[1] = cb;
3220
3221 cb = av_shift (av);
3222
3223 if (SvTYPE (cb) == SVt_PVCV)
3224 {
3225 dSP;
3226 PUSHMARK (SP);
3227 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3228 PUTBACK;
3229 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3230 }
3231 else
3232 {
3233 api_ready (aTHX_ cb);
3234 sv_setiv (cb, 0); /* signal waiter */
3235 }
3236
3237 SvREFCNT_dec_NN (cb);
3238
3239 --count;
3240 }
3241}
3242
3243static int
3244slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3245{
3246 /* if we are about to throw, also stop waiting */
3247 return SvROK ((SV *)frame->data) && !CORO_THROW;
3248}
3249
3250static void
3251slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3252{
3253 AV *av = (AV *)SvRV (arg [0]);
3254
3255 if (items >= 2)
3256 {
3257 SV *cb_cv = s_get_cv_croak (arg [1]);
3258 av_push (av, SvREFCNT_inc_NN (cb_cv));
3259
3260 if (SvIVX (AvARRAY (av)[0]))
3261 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3262
3263 frame->prepare = prepare_nop;
3264 frame->check = slf_check_nop;
3265 }
3266 else if (SvIVX (AvARRAY (av)[0]))
3267 {
3268 SvIVX (AvARRAY (av)[0]) = 0;
3269 frame->prepare = prepare_nop;
3270 frame->check = slf_check_nop;
3271 }
3272 else
3273 {
3274 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3275
3276 av_push (av, waiter);
3277
3278 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3279 frame->prepare = prepare_schedule;
3280 frame->check = slf_check_signal_wait;
3281 }
2117} 3282}
2118 3283
2119/*****************************************************************************/ 3284/*****************************************************************************/
2120/* Coro::AIO */ 3285/* Coro::AIO */
2121 3286
… …
2132 3297
2133static void 3298static void
2134coro_aio_callback (pTHX_ CV *cv) 3299coro_aio_callback (pTHX_ CV *cv)
2135{ 3300{
2136 dXSARGS; 3301 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG; 3302 AV *state = (AV *)S_GENSUB_ARG;
2138 SV *coro = av_pop (state); 3303 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state)); 3304 SV *data_sv = newSV (sizeof (struct io_state));
2140 3305
2141 av_extend (state, items); 3306 av_extend (state, items - 1);
2142 3307
2143 sv_upgrade (data_sv, SVt_PV); 3308 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state)); 3309 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv); 3310 SvPOK_only (data_sv);
2146 3311
… …
2162 } 3327 }
2163 3328
2164 av_push (state, data_sv); 3329 av_push (state, data_sv);
2165 3330
2166 api_ready (aTHX_ coro); 3331 api_ready (aTHX_ coro);
2167 SvREFCNT_dec (coro); 3332 SvREFCNT_dec_NN (coro);
2168 SvREFCNT_dec ((AV *)state); 3333 SvREFCNT_dec_NN ((AV *)state);
2169} 3334}
2170 3335
2171static int 3336static int
2172slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3337slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173{ 3338{
2174 AV *state = (AV *)frame->data; 3339 AV *state = (AV *)frame->data;
2175 3340
3341 /* if we are about to throw, return early */
3342 /* this does not cancel the aio request, but at least */
3343 /* it quickly returns */
3344 if (CORO_THROW)
3345 return 0;
3346
2176 /* one element that is an RV? repeat! */ 3347 /* one element that is an RV? repeat! */
2177 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3348 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2178 return 1; 3349 return 1;
2179 3350
2180 /* restore status */ 3351 /* restore status */
2181 { 3352 {
2182 SV *data_sv = av_pop (state); 3353 SV *data_sv = av_pop (state);
… …
2185 errno = data->errorno; 3356 errno = data->errorno;
2186 PL_laststype = data->laststype; 3357 PL_laststype = data->laststype;
2187 PL_laststatval = data->laststatval; 3358 PL_laststatval = data->laststatval;
2188 PL_statcache = data->statcache; 3359 PL_statcache = data->statcache;
2189 3360
2190 SvREFCNT_dec (data_sv); 3361 SvREFCNT_dec_NN (data_sv);
2191 } 3362 }
2192 3363
2193 /* push result values */ 3364 /* push result values */
2194 { 3365 {
2195 dSP; 3366 dSP;
… …
2221 dSP; 3392 dSP;
2222 3393
2223 static SV *prio_cv; 3394 static SV *prio_cv;
2224 static SV *prio_sv; 3395 static SV *prio_sv;
2225 3396
2226 if (expect_false (!prio_cv)) 3397 if (ecb_expect_false (!prio_cv))
2227 { 3398 {
2228 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3399 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2229 prio_sv = newSViv (0); 3400 prio_sv = newSViv (0);
2230 } 3401 }
2231 3402
… …
2250 3421
2251 for (i = 0; i < items; ++i) 3422 for (i = 0; i < items; ++i)
2252 PUSHs (arg [i]); 3423 PUSHs (arg [i]);
2253 3424
2254 /* now push the callback closure */ 3425 /* now push the callback closure */
2255 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3426 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2256 3427
2257 /* now call the AIO function - we assume our request is uncancelable */ 3428 /* now call the AIO function - we assume our request is uncancelable */
2258 PUTBACK; 3429 PUTBACK;
2259 call_sv ((SV *)req, G_VOID | G_DISCARD); 3430 call_sv ((SV *)req, G_VOID | G_DISCARD);
2260 } 3431 }
2261 3432
2262 /* now that the requets is going, we loop toll we have a result */ 3433 /* now that the request is going, we loop till we have a result */
2263 frame->data = (void *)state; 3434 frame->data = (void *)state;
2264 frame->prepare = prepare_schedule; 3435 frame->prepare = prepare_schedule;
2265 frame->check = slf_check_aio_req; 3436 frame->check = slf_check_aio_req;
2266} 3437}
2267 3438
… …
2275 XSRETURN_EMPTY; 3446 XSRETURN_EMPTY;
2276} 3447}
2277 3448
2278/*****************************************************************************/ 3449/*****************************************************************************/
2279 3450
3451#if CORO_CLONE
3452# include "clone.c"
3453#endif
3454
3455/*****************************************************************************/
3456
3457static SV *
3458coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3459{
3460 SV *coro_sv;
3461 struct coro *coro;
3462 MAGIC *mg;
3463 HV *hv;
3464 SV *cb;
3465 int i;
3466
3467 if (argc > 0)
3468 {
3469 cb = s_get_cv_croak (argv [0]);
3470
3471 if (!is_coro)
3472 {
3473 if (CvISXSUB (cb))
3474 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3475
3476 if (!CvROOT (cb))
3477 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3478 }
3479 }
3480
3481 Newz (0, coro, 1, struct coro);
3482 coro->args = newAV ();
3483 coro->flags = CF_NEW;
3484
3485 if (coro_first) coro_first->prev = coro;
3486 coro->next = coro_first;
3487 coro_first = coro;
3488
3489 coro->hv = hv = newHV ();
3490 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3491 mg->mg_flags |= MGf_DUP;
3492 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3493
3494 if (argc > 0)
3495 {
3496 av_extend (coro->args, argc + is_coro - 1);
3497
3498 if (is_coro)
3499 {
3500 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3501 cb = (SV *)cv_coro_run;
3502 }
3503
3504 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3505
3506 for (i = 1; i < argc; i++)
3507 av_push (coro->args, newSVsv (argv [i]));
3508 }
3509
3510 return coro_sv;
3511}
3512
3513#ifndef __cplusplus
3514ecb_cold XS(boot_Coro__State);
3515#endif
3516
3517#if CORO_JIT
3518
3519static void ecb_noinline ecb_cold
3520pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3521{
3522 dSP;
3523 AV *av = newAV ();
3524
3525 av_store (av, 3, newSVuv (d));
3526 av_store (av, 2, newSVuv (c));
3527 av_store (av, 1, newSVuv (b));
3528 av_store (av, 0, newSVuv (a));
3529
3530 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3531
3532 PUTBACK;
3533}
3534
3535static void ecb_noinline ecb_cold
3536jit_init (pTHX)
3537{
3538 dSP;
3539 SV *load, *save;
3540 char *map_base;
3541 char *load_ptr, *save_ptr;
3542 STRLEN load_len, save_len, map_len;
3543 int count;
3544
3545 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3546
3547 PUSHMARK (SP);
3548 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3549 #include "state.h"
3550 count = call_pv ("Coro::State::_jit", G_ARRAY);
3551 SPAGAIN;
3552
3553 save = POPs; save_ptr = SvPVbyte (save, save_len);
3554 load = POPs; load_ptr = SvPVbyte (load, load_len);
3555
3556 map_len = load_len + save_len + 16;
3557
3558 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3559
3560 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3561
3562 load_perl_slots = (load_save_perl_slots_type)map_base;
3563 memcpy (map_base, load_ptr, load_len);
3564
3565 map_base += (load_len + 15) & ~15;
3566
3567 save_perl_slots = (load_save_perl_slots_type)map_base;
3568 memcpy (map_base, save_ptr, save_len);
3569
3570 /* we are good citizens and try to make the page read-only, so the evil evil */
3571 /* hackers might have it a bit more difficult */
3572 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3573
3574 PUTBACK;
3575 eval_pv ("undef &Coro::State::_jit", 1);
3576}
3577
3578#endif
3579
2280MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3580MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2281 3581
2282PROTOTYPES: DISABLE 3582PROTOTYPES: DISABLE
2283 3583
2284BOOT: 3584BOOT:
2285{ 3585{
3586#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3587#include "state.h"
2286#ifdef USE_ITHREADS 3588#ifdef USE_ITHREADS
2287# if CORO_PTHREAD 3589# if CORO_PTHREAD
2288 coro_thx = PERL_GET_CONTEXT; 3590 coro_thx = PERL_GET_CONTEXT;
2289# endif 3591# endif
2290#endif 3592#endif
2291 BOOT_PAGESIZE; 3593 /* perl defines these to check for existance first, but why it doesn't */
3594 /* just create them one at init time is not clear to me, except for */
3595 /* programs trying to delete them, but... */
3596 /* anyway, we declare this as invalid and make sure they are initialised here */
3597 DEFSV;
3598 ERRSV;
3599
3600 cctx_current = cctx_new_empty ();
2292 3601
2293 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3602 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2294 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3603 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2295 3604
2296 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3605 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2316 3625
2317 { 3626 {
2318 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3627 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319 3628
2320 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3629 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321 hv_store_ent (PL_custom_op_names, slf, 3630 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2322 newSVpv ("coro_slf", 0), 0);
2323 3631
2324 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3632 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325 hv_store_ent (PL_custom_op_descs, slf, 3633 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2326 newSVpv ("coro schedule like function", 0), 0);
2327 } 3634 }
2328 3635
2329 coroapi.ver = CORO_API_VERSION; 3636 coroapi.ver = CORO_API_VERSION;
2330 coroapi.rev = CORO_API_REVISION; 3637 coroapi.rev = CORO_API_REVISION;
2331 3638
… …
2336 coroapi.prepare_nop = prepare_nop; 3643 coroapi.prepare_nop = prepare_nop;
2337 coroapi.prepare_schedule = prepare_schedule; 3644 coroapi.prepare_schedule = prepare_schedule;
2338 coroapi.prepare_cede = prepare_cede; 3645 coroapi.prepare_cede = prepare_cede;
2339 coroapi.prepare_cede_notself = prepare_cede_notself; 3646 coroapi.prepare_cede_notself = prepare_cede_notself;
2340 3647
2341 { 3648 time_init (aTHX);
2342 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2343 3649
2344 if (!svp) croak ("Time::HiRes is required");
2345 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2346
2347 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2348 }
2349
2350 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3650 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3651#if CORO_JIT
3652 PUTBACK;
3653 jit_init (aTHX);
3654 SPAGAIN;
3655#endif
2351} 3656}
2352 3657
2353SV * 3658SV *
2354new (char *klass, ...) 3659new (SV *klass, ...)
3660 ALIAS:
3661 Coro::new = 1
2355 CODE: 3662 CODE:
2356{ 3663 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2357 struct coro *coro; 3664 OUTPUT:
2358 MAGIC *mg;
2359 HV *hv;
2360 int i;
2361
2362 Newz (0, coro, 1, struct coro);
2363 coro->args = newAV ();
2364 coro->flags = CF_NEW;
2365
2366 if (coro_first) coro_first->prev = coro;
2367 coro->next = coro_first;
2368 coro_first = coro;
2369
2370 coro->hv = hv = newHV ();
2371 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2372 mg->mg_flags |= MGf_DUP;
2373 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2374
2375 av_extend (coro->args, items - 1);
2376 for (i = 1; i < items; i++)
2377 av_push (coro->args, newSVsv (ST (i)));
2378}
2379 OUTPUT:
2380 RETVAL 3665 RETVAL
2381
2382void
2383_set_stacklevel (...)
2384 CODE:
2385 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2386 3666
2387void 3667void
2388transfer (...) 3668transfer (...)
2389 PROTOTYPE: $$ 3669 PROTOTYPE: $$
2390 CODE: 3670 CODE:
2391 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3671 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2392 3672
2393bool 3673SV *
2394_destroy (SV *coro_sv) 3674clone (Coro::State coro)
2395 CODE: 3675 CODE:
2396 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3676{
3677#if CORO_CLONE
3678 struct coro *ncoro = coro_clone (aTHX_ coro);
3679 MAGIC *mg;
3680 /* TODO: too much duplication */
3681 ncoro->hv = newHV ();
3682 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3683 mg->mg_flags |= MGf_DUP;
3684 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3685#else
3686 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3687#endif
3688}
2397 OUTPUT: 3689 OUTPUT:
2398 RETVAL 3690 RETVAL
2399
2400void
2401_exit (int code)
2402 PROTOTYPE: $
2403 CODE:
2404 _exit (code);
2405 3691
2406int 3692int
2407cctx_stacksize (int new_stacksize = 0) 3693cctx_stacksize (int new_stacksize = 0)
2408 PROTOTYPE: ;$ 3694 PROTOTYPE: ;$
2409 CODE: 3695 CODE:
… …
2445void 3731void
2446list () 3732list ()
2447 PROTOTYPE: 3733 PROTOTYPE:
2448 PPCODE: 3734 PPCODE:
2449{ 3735{
2450 struct coro *coro; 3736 struct coro *coro;
2451 for (coro = coro_first; coro; coro = coro->next) 3737 for (coro = coro_first; coro; coro = coro->next)
2452 if (coro->hv) 3738 if (coro->hv)
2453 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3739 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2454} 3740}
2455 3741
… …
2459 eval = 1 3745 eval = 1
2460 CODE: 3746 CODE:
2461{ 3747{
2462 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3748 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2463 { 3749 {
2464 struct coro temp; 3750 struct coro *current = SvSTATE_current;
3751 struct CoroSLF slf_save;
2465 3752
2466 if (!(coro->flags & CF_RUNNING)) 3753 if (current != coro)
2467 { 3754 {
2468 PUTBACK; 3755 PUTBACK;
2469 save_perl (aTHX_ &temp); 3756 save_perl (aTHX_ current);
2470 load_perl (aTHX_ coro); 3757 load_perl (aTHX_ coro);
3758 /* the coro is most likely in an active SLF call.
3759 * while not strictly required (the code we execute is
3760 * not allowed to call any SLF functions), it's cleaner
3761 * to reinitialise the slf_frame and restore it later.
3762 * This might one day allow us to actually do SLF calls
3763 * from code executed here.
3764 */
3765 slf_save = slf_frame;
3766 slf_frame.prepare = 0;
3767 SPAGAIN;
2471 } 3768 }
2472 3769
2473 {
2474 dSP;
2475 ENTER;
2476 SAVETMPS;
2477 PUTBACK;
2478 PUSHSTACK; 3770 PUSHSTACK;
3771
2479 PUSHMARK (SP); 3772 PUSHMARK (SP);
3773 PUTBACK;
2480 3774
2481 if (ix) 3775 if (ix)
2482 eval_sv (coderef, 0); 3776 eval_sv (coderef, 0);
2483 else 3777 else
2484 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3778 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2485 3779
2486 POPSTACK; 3780 POPSTACK;
2487 SPAGAIN; 3781 SPAGAIN;
2488 FREETMPS;
2489 LEAVE;
2490 PUTBACK;
2491 }
2492 3782
2493 if (!(coro->flags & CF_RUNNING)) 3783 if (current != coro)
2494 { 3784 {
3785 PUTBACK;
3786 slf_frame = slf_save;
2495 save_perl (aTHX_ coro); 3787 save_perl (aTHX_ coro);
2496 load_perl (aTHX_ &temp); 3788 load_perl (aTHX_ current);
2497 SPAGAIN; 3789 SPAGAIN;
2498 } 3790 }
2499 } 3791 }
2500} 3792}
2501 3793
… …
2504 PROTOTYPE: $ 3796 PROTOTYPE: $
2505 ALIAS: 3797 ALIAS:
2506 is_ready = CF_READY 3798 is_ready = CF_READY
2507 is_running = CF_RUNNING 3799 is_running = CF_RUNNING
2508 is_new = CF_NEW 3800 is_new = CF_NEW
2509 is_destroyed = CF_DESTROYED 3801 is_destroyed = CF_ZOMBIE
3802 is_zombie = CF_ZOMBIE
3803 is_suspended = CF_SUSPENDED
2510 CODE: 3804 CODE:
2511 RETVAL = boolSV (coro->flags & ix); 3805 RETVAL = boolSV (coro->flags & ix);
2512 OUTPUT: 3806 OUTPUT:
2513 RETVAL 3807 RETVAL
2514 3808
2515void 3809void
2516throw (Coro::State self, SV *throw = &PL_sv_undef) 3810throw (SV *self, SV *exception = &PL_sv_undef)
2517 PROTOTYPE: $;$ 3811 PROTOTYPE: $;$
2518 CODE: 3812 CODE:
2519{ 3813{
3814 struct coro *coro = SvSTATE (self);
2520 struct coro *current = SvSTATE_current; 3815 struct coro *current = SvSTATE_current;
2521 SV **throwp = self == current ? &coro_throw : &self->throw; 3816 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2522 SvREFCNT_dec (*throwp); 3817 SvREFCNT_dec (*exceptionp);
2523 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3818 SvGETMAGIC (exception);
3819 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3820
3821 api_ready (aTHX_ self);
2524} 3822}
2525 3823
2526void 3824void
2527api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3825api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2528 PROTOTYPE: $;$ 3826 PROTOTYPE: $;$
… …
2530 3828
2531SV * 3829SV *
2532has_cctx (Coro::State coro) 3830has_cctx (Coro::State coro)
2533 PROTOTYPE: $ 3831 PROTOTYPE: $
2534 CODE: 3832 CODE:
2535 RETVAL = boolSV (!!coro->cctx); 3833 /* maybe manage the running flag differently */
3834 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2536 OUTPUT: 3835 OUTPUT:
2537 RETVAL 3836 RETVAL
2538 3837
2539int 3838int
2540is_traced (Coro::State coro) 3839is_traced (Coro::State coro)
… …
2560 3859
2561void 3860void
2562force_cctx () 3861force_cctx ()
2563 PROTOTYPE: 3862 PROTOTYPE:
2564 CODE: 3863 CODE:
2565 SvSTATE_current->cctx->idle_sp = 0; 3864 cctx_current->idle_sp = 0;
2566 3865
2567void 3866void
2568swap_defsv (Coro::State self) 3867swap_defsv (Coro::State self)
2569 PROTOTYPE: $ 3868 PROTOTYPE: $
2570 ALIAS: 3869 ALIAS:
… …
2578 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3877 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2579 3878
2580 SV *tmp = *src; *src = *dst; *dst = tmp; 3879 SV *tmp = *src; *src = *dst; *dst = tmp;
2581 } 3880 }
2582 3881
3882void
3883cancel (Coro::State self)
3884 CODE:
3885 coro_state_destroy (aTHX_ self);
3886
3887SV *
3888enable_times (int enabled = enable_times)
3889 CODE:
3890{
3891 RETVAL = boolSV (enable_times);
3892
3893 if (enabled != enable_times)
3894 {
3895 enable_times = enabled;
3896
3897 coro_times_update ();
3898 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3899 }
3900}
3901 OUTPUT:
3902 RETVAL
3903
3904void
3905times (Coro::State self)
3906 PPCODE:
3907{
3908 struct coro *current = SvSTATE (coro_current);
3909
3910 if (ecb_expect_false (current == self))
3911 {
3912 coro_times_update ();
3913 coro_times_add (SvSTATE (coro_current));
3914 }
3915
3916 EXTEND (SP, 2);
3917 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3918 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3919
3920 if (ecb_expect_false (current == self))
3921 coro_times_sub (SvSTATE (coro_current));
3922}
3923
3924void
3925swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3926 CODE:
3927{
3928 struct coro *current = SvSTATE_current;
3929
3930 if (current == coro)
3931 SWAP_SVS (current);
3932
3933 if (!coro->swap_sv)
3934 coro->swap_sv = newAV ();
3935
3936 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3937 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3938
3939 if (current == coro)
3940 SWAP_SVS (current);
3941}
3942
2583 3943
2584MODULE = Coro::State PACKAGE = Coro 3944MODULE = Coro::State PACKAGE = Coro
2585 3945
2586BOOT: 3946BOOT:
2587{ 3947{
2588 int i; 3948 if (SVt_LAST > 32)
3949 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2589 3950
2590 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2591 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3951 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2592 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3952 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2593 3953 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2594 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3954 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2595 SvREADONLY_on (coro_current); 3955 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3956 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3957 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3958 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3959
3960 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3961 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3962 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3963 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2596 3964
2597 coro_stash = gv_stashpv ("Coro", TRUE); 3965 coro_stash = gv_stashpv ("Coro", TRUE);
2598 3966
2599 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3967 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2600 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3968 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2601 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3969 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2602 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3970 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2603 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3971 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2604 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3972 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2605
2606 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2607 coro_ready[i] = newAV ();
2608 3973
2609 { 3974 {
2610 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3975 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2611 3976
2612 coroapi.schedule = api_schedule; 3977 coroapi.schedule = api_schedule;
3978 coroapi.schedule_to = api_schedule_to;
2613 coroapi.cede = api_cede; 3979 coroapi.cede = api_cede;
2614 coroapi.cede_notself = api_cede_notself; 3980 coroapi.cede_notself = api_cede_notself;
2615 coroapi.ready = api_ready; 3981 coroapi.ready = api_ready;
2616 coroapi.is_ready = api_is_ready; 3982 coroapi.is_ready = api_is_ready;
2617 coroapi.nready = coro_nready; 3983 coroapi.nready = coro_nready;
2618 coroapi.current = coro_current; 3984 coroapi.current = coro_current;
2619 3985
3986 coroapi.enterleave_hook = api_enterleave_hook;
3987 coroapi.enterleave_unhook = api_enterleave_unhook;
3988 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
3989
2620 GCoroAPI = &coroapi; 3990 /*GCoroAPI = &coroapi;*/
2621 sv_setiv (sv, (IV)&coroapi); 3991 sv_setiv (sv, (IV)&coroapi);
2622 SvREADONLY_on (sv); 3992 SvREADONLY_on (sv);
2623 } 3993 }
2624} 3994}
3995
3996SV *
3997async (...)
3998 PROTOTYPE: &@
3999 CODE:
4000 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4001 api_ready (aTHX_ RETVAL);
4002 OUTPUT:
4003 RETVAL
4004
4005void
4006_destroy (Coro::State coro)
4007 CODE:
4008 /* used by the manager thread */
4009 coro_state_destroy (aTHX_ coro);
4010
4011void
4012on_destroy (Coro::State coro, SV *cb)
4013 CODE:
4014 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4015
4016void
4017join (...)
4018 CODE:
4019 CORO_EXECUTE_SLF_XS (slf_init_join);
4020
4021void
4022terminate (...)
4023 CODE:
4024 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4025
4026void
4027cancel (...)
4028 CODE:
4029 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4030
4031int
4032safe_cancel (Coro::State self, ...)
4033 C_ARGS: aTHX_ self, &ST (1), items - 1
2625 4034
2626void 4035void
2627schedule (...) 4036schedule (...)
2628 CODE: 4037 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4038 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2630 4039
2631void 4040void
4041schedule_to (...)
4042 CODE:
4043 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4044
4045void
4046cede_to (...)
4047 CODE:
4048 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
4049
4050void
2632cede (...) 4051cede (...)
2633 CODE: 4052 CODE:
2634 CORO_EXECUTE_SLF_XS (slf_init_cede); 4053 CORO_EXECUTE_SLF_XS (slf_init_cede);
2635 4054
2636void 4055void
… …
2640 4059
2641void 4060void
2642_set_current (SV *current) 4061_set_current (SV *current)
2643 PROTOTYPE: $ 4062 PROTOTYPE: $
2644 CODE: 4063 CODE:
2645 SvREFCNT_dec (SvRV (coro_current)); 4064 SvREFCNT_dec_NN (SvRV (coro_current));
2646 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4065 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2647 4066
2648void 4067void
2649_set_readyhook (SV *hook) 4068_set_readyhook (SV *hook)
2650 PROTOTYPE: $ 4069 PROTOTYPE: $
2651 CODE: 4070 CODE:
2652 SvREFCNT_dec (coro_readyhook); 4071 SvREFCNT_dec (coro_readyhook);
4072 SvGETMAGIC (hook);
4073 if (SvOK (hook))
4074 {
2653 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4075 coro_readyhook = newSVsv (hook);
4076 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4077 }
4078 else
4079 {
4080 coro_readyhook = 0;
4081 CORO_READYHOOK = 0;
4082 }
2654 4083
2655int 4084int
2656prio (Coro::State coro, int newprio = 0) 4085prio (Coro::State coro, int newprio = 0)
2657 PROTOTYPE: $;$ 4086 PROTOTYPE: $;$
2658 ALIAS: 4087 ALIAS:
… …
2664 if (items > 1) 4093 if (items > 1)
2665 { 4094 {
2666 if (ix) 4095 if (ix)
2667 newprio = coro->prio - newprio; 4096 newprio = coro->prio - newprio;
2668 4097
2669 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4098 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2670 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4099 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2671 4100
2672 coro->prio = newprio; 4101 coro->prio = newprio;
2673 } 4102 }
2674} 4103}
2675 OUTPUT: 4104 OUTPUT:
… …
2689 CODE: 4118 CODE:
2690 RETVAL = coro_nready; 4119 RETVAL = coro_nready;
2691 OUTPUT: 4120 OUTPUT:
2692 RETVAL 4121 RETVAL
2693 4122
2694# for async_pool speedup
2695void 4123void
2696_pool_1 (SV *cb) 4124suspend (Coro::State self)
4125 PROTOTYPE: $
2697 CODE: 4126 CODE:
2698{ 4127 self->flags |= CF_SUSPENDED;
2699 HV *hv = (HV *)SvRV (coro_current);
2700 struct coro *coro = SvSTATE_hv ((SV *)hv);
2701 AV *defav = GvAV (PL_defgv);
2702 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2703 AV *invoke_av;
2704 int i, len;
2705 4128
2706 if (!invoke) 4129void
4130resume (Coro::State self)
4131 PROTOTYPE: $
4132 CODE:
4133 self->flags &= ~CF_SUSPENDED;
4134
4135void
4136_pool_handler (...)
4137 CODE:
4138 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4139
4140void
4141async_pool (SV *cv, ...)
4142 PROTOTYPE: &@
4143 PPCODE:
4144{
4145 HV *hv = (HV *)av_pop (av_async_pool);
4146 AV *av = newAV ();
4147 SV *cb = ST (0);
4148 int i;
4149
4150 av_extend (av, items - 2);
4151 for (i = 1; i < items; ++i)
4152 av_push (av, SvREFCNT_inc_NN (ST (i)));
4153
4154 if ((SV *)hv == &PL_sv_undef)
2707 { 4155 {
2708 SV *old = PL_diehook; 4156 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2709 PL_diehook = 0; 4157 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2710 SvREFCNT_dec (old); 4158 SvREFCNT_dec_NN (sv);
2711 croak ("\3async_pool terminate\2\n");
2712 } 4159 }
2713 4160
2714 SvREFCNT_dec (coro->saved_deffh);
2715 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2716
2717 hv_store (hv, "desc", sizeof ("desc") - 1,
2718 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2719
2720 invoke_av = (AV *)SvRV (invoke);
2721 len = av_len (invoke_av);
2722
2723 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2724
2725 if (len > 0)
2726 { 4161 {
2727 av_fill (defav, len - 1); 4162 struct coro *coro = SvSTATE_hv (hv);
2728 for (i = 0; i < len; ++i) 4163
2729 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4164 assert (!coro->invoke_cb);
4165 assert (!coro->invoke_av);
4166 coro->invoke_cb = SvREFCNT_inc (cb);
4167 coro->invoke_av = av;
2730 } 4168 }
4169
4170 api_ready (aTHX_ (SV *)hv);
4171
4172 if (GIMME_V != G_VOID)
4173 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4174 else
4175 SvREFCNT_dec_NN (hv);
2731} 4176}
4177
4178SV *
4179rouse_cb ()
4180 PROTOTYPE:
4181 CODE:
4182 RETVAL = coro_new_rouse_cb (aTHX);
4183 OUTPUT:
4184 RETVAL
2732 4185
2733void 4186void
2734_pool_2 (SV *cb) 4187rouse_wait (...)
4188 PROTOTYPE: ;$
4189 PPCODE:
4190 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4191
4192void
4193on_enter (SV *block)
4194 ALIAS:
4195 on_leave = 1
4196 PROTOTYPE: &
2735 CODE: 4197 CODE:
2736{ 4198{
2737 HV *hv = (HV *)SvRV (coro_current);
2738 struct coro *coro = SvSTATE_hv ((SV *)hv); 4199 struct coro *coro = SvSTATE_current;
4200 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2739 4201
2740 sv_setsv (cb, &PL_sv_undef); 4202 block = s_get_cv_croak (block);
2741 4203
2742 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4204 if (!*avp)
2743 coro->saved_deffh = 0; 4205 *avp = newAV ();
2744 4206
2745 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4207 av_push (*avp, SvREFCNT_inc (block));
2746 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2747 {
2748 SV *old = PL_diehook;
2749 PL_diehook = 0;
2750 SvREFCNT_dec (old);
2751 croak ("\3async_pool terminate\2\n");
2752 }
2753 4208
2754 av_clear (GvAV (PL_defgv)); 4209 if (!ix)
2755 hv_store (hv, "desc", sizeof ("desc") - 1, 4210 on_enterleave_call (aTHX_ block);
2756 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2757 4211
2758 coro->prio = 0; 4212 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2759 4213 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2760 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4214 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2761 api_trace (aTHX_ coro_current, 0);
2762
2763 av_push (av_async_pool, newSVsv (coro_current));
2764} 4215}
2765 4216
2766 4217
2767MODULE = Coro::State PACKAGE = PerlIO::cede 4218MODULE = Coro::State PACKAGE = PerlIO::cede
2768 4219
… …
2771 4222
2772 4223
2773MODULE = Coro::State PACKAGE = Coro::Semaphore 4224MODULE = Coro::State PACKAGE = Coro::Semaphore
2774 4225
2775SV * 4226SV *
2776new (SV *klass, SV *count_ = 0) 4227new (SV *klass, SV *count = 0)
2777 CODE: 4228 CODE:
2778{ 4229{
2779 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4230 int semcnt = 1;
2780 AV *av = newAV (); 4231
2781 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4232 if (count)
2782 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4233 {
4234 SvGETMAGIC (count);
4235
4236 if (SvOK (count))
4237 semcnt = SvIV (count);
4238 }
4239
4240 RETVAL = sv_bless (
4241 coro_waitarray_new (aTHX_ semcnt),
4242 GvSTASH (CvGV (cv))
4243 );
2783} 4244}
4245 OUTPUT:
4246 RETVAL
4247
4248# helper for Coro::Channel and others
4249SV *
4250_alloc (int count)
4251 CODE:
4252 RETVAL = coro_waitarray_new (aTHX_ count);
2784 OUTPUT: 4253 OUTPUT:
2785 RETVAL 4254 RETVAL
2786 4255
2787SV * 4256SV *
2788count (SV *self) 4257count (SV *self)
… …
2797 adjust = 1 4266 adjust = 1
2798 CODE: 4267 CODE:
2799 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4268 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2800 4269
2801void 4270void
2802down (SV *self) 4271down (...)
2803 CODE: 4272 CODE:
2804 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4273 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4274
4275void
4276wait (...)
4277 CODE:
4278 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2805 4279
2806void 4280void
2807try (SV *self) 4281try (SV *self)
2808 PPCODE: 4282 PPCODE:
2809{ 4283{
… …
2821 XSRETURN_NO; 4295 XSRETURN_NO;
2822} 4296}
2823 4297
2824void 4298void
2825waiters (SV *self) 4299waiters (SV *self)
2826 CODE: 4300 PPCODE:
2827{ 4301{
2828 AV *av = (AV *)SvRV (self); 4302 AV *av = (AV *)SvRV (self);
4303 int wcount = AvFILLp (av) + 1 - 1;
2829 4304
2830 if (GIMME_V == G_SCALAR) 4305 if (GIMME_V == G_SCALAR)
2831 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4306 XPUSHs (sv_2mortal (newSViv (wcount)));
2832 else 4307 else
2833 { 4308 {
2834 int i; 4309 int i;
2835 EXTEND (SP, AvFILLp (av) + 1 - 1); 4310 EXTEND (SP, wcount);
2836 for (i = 1; i <= AvFILLp (av); ++i) 4311 for (i = 1; i <= wcount; ++i)
2837 PUSHs (newSVsv (AvARRAY (av)[i])); 4312 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2838 } 4313 }
2839} 4314}
4315
4316MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4317
4318void
4319_may_delete (SV *sem, int count, unsigned int extra_refs)
4320 PPCODE:
4321{
4322 AV *av = (AV *)SvRV (sem);
4323
4324 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4325 && AvFILLp (av) == 0 /* no waiters, just count */
4326 && SvIV (AvARRAY (av)[0]) == count)
4327 XSRETURN_YES;
4328
4329 XSRETURN_NO;
4330}
4331
4332MODULE = Coro::State PACKAGE = Coro::Signal
4333
4334SV *
4335new (SV *klass)
4336 CODE:
4337 RETVAL = sv_bless (
4338 coro_waitarray_new (aTHX_ 0),
4339 GvSTASH (CvGV (cv))
4340 );
4341 OUTPUT:
4342 RETVAL
4343
4344void
4345wait (...)
4346 CODE:
4347 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4348
4349void
4350broadcast (SV *self)
4351 CODE:
4352{
4353 AV *av = (AV *)SvRV (self);
4354 coro_signal_wake (aTHX_ av, AvFILLp (av));
4355}
4356
4357void
4358send (SV *self)
4359 CODE:
4360{
4361 AV *av = (AV *)SvRV (self);
4362
4363 if (AvFILLp (av))
4364 coro_signal_wake (aTHX_ av, 1);
4365 else
4366 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4367}
4368
4369IV
4370awaited (SV *self)
4371 CODE:
4372 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4373 OUTPUT:
4374 RETVAL
2840 4375
2841 4376
2842MODULE = Coro::State PACKAGE = Coro::AnyEvent 4377MODULE = Coro::State PACKAGE = Coro::AnyEvent
2843 4378
2844BOOT: 4379BOOT:
… …
2846 4381
2847void 4382void
2848_schedule (...) 4383_schedule (...)
2849 CODE: 4384 CODE:
2850{ 4385{
2851 static int incede; 4386 static int incede;
2852 4387
2853 api_cede_notself (aTHX); 4388 api_cede_notself (aTHX);
2854 4389
2855 ++incede; 4390 ++incede;
2856 while (coro_nready >= incede && api_cede (aTHX)) 4391 while (coro_nready >= incede && api_cede (aTHX))
… …
2859 sv_setsv (sv_activity, &PL_sv_undef); 4394 sv_setsv (sv_activity, &PL_sv_undef);
2860 if (coro_nready >= incede) 4395 if (coro_nready >= incede)
2861 { 4396 {
2862 PUSHMARK (SP); 4397 PUSHMARK (SP);
2863 PUTBACK; 4398 PUTBACK;
2864 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4399 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2865 SPAGAIN;
2866 } 4400 }
2867 4401
2868 --incede; 4402 --incede;
2869} 4403}
2870 4404
… …
2873 4407
2874void 4408void
2875_register (char *target, char *proto, SV *req) 4409_register (char *target, char *proto, SV *req)
2876 CODE: 4410 CODE:
2877{ 4411{
2878 HV *st; 4412 SV *req_cv = s_get_cv_croak (req);
2879 GV *gvp;
2880 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2881 /* newXSproto doesn't return the CV on 5.8 */ 4413 /* newXSproto doesn't return the CV on 5.8 */
2882 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4414 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2883 sv_setpv ((SV *)slf_cv, proto); 4415 sv_setpv ((SV *)slf_cv, proto);
2884 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4416 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2885} 4417}
2886 4418
4419MODULE = Coro::State PACKAGE = Coro::Select
4420
4421void
4422patch_pp_sselect ()
4423 CODE:
4424 if (!coro_old_pp_sselect)
4425 {
4426 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4427 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4428 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4429 }
4430
4431void
4432unpatch_pp_sselect ()
4433 CODE:
4434 if (coro_old_pp_sselect)
4435 {
4436 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4437 coro_old_pp_sselect = 0;
4438 }
4439
4440MODULE = Coro::State PACKAGE = Coro::Util
4441
4442void
4443_exit (int code)
4444 CODE:
4445 _exit (code);
4446
4447NV
4448time ()
4449 CODE:
4450 RETVAL = nvtime (aTHX);
4451 OUTPUT:
4452 RETVAL
4453
4454NV
4455gettimeofday ()
4456 PPCODE:
4457{
4458 UV tv [2];
4459 u2time (aTHX_ tv);
4460 EXTEND (SP, 2);
4461 PUSHs (sv_2mortal (newSVuv (tv [0])));
4462 PUSHs (sv_2mortal (newSVuv (tv [1])));
4463}
4464

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