ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.278 by root, Sun Nov 16 07:09:28 2008 UTC vs.
Revision 1.429 by root, Fri Dec 7 14:21:09 2012 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#include "ecb.h"
20
21#include <stddef.h>
13#include <stdio.h> 22#include <stdio.h>
14#include <errno.h> 23#include <errno.h>
15#include <assert.h> 24#include <assert.h>
16 25
17#ifdef WIN32 26#ifndef SVs_PADSTALE
27# define SVs_PADSTALE 0
28#endif
29
30#ifdef PadARRAY
31# define NEWPADAPI
32# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
33#else
34typedef AV PADNAMELIST;
35# if !PERL_VERSION_ATLEAST(5,8,0)
36typedef AV PADLIST;
37typedef AV PAD;
38# endif
39# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
40# define PadlistMAX(pl) AvFILLp (pl)
41# define PadlistNAMES(pl) (*PadlistARRAY (pl))
42# define PadARRAY AvARRAY
43# define PadMAX AvFILLp
44# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
45#endif
46
47#if defined(_WIN32)
48# undef HAS_GETTIMEOFDAY
18# undef setjmp 49# undef setjmp
19# undef longjmp 50# undef longjmp
20# undef _exit 51# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 52# define setjmp _setjmp /* deep magic */
22#else 53#else
23# include <inttypes.h> /* most portable stdint.h */ 54# include <inttypes.h> /* most portable stdint.h */
24#endif 55#endif
25 56
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 */ 57/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 58static int cctx_max_idle = 4;
55 59
56#define PERL_VERSION_ATLEAST(a,b,c) \ 60#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 61# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD
108#endif
109
110#ifndef CORO_STACKGUARD
111# define CORO_STACKGUARD 0
112#endif 62#endif
113 63
114/* prefer perl internal functions over our own? */ 64/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS 65#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0 66# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 67#endif
118 68
119/* The next macros try to return the current stack pointer, in an as 69/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 70 * portable way as possible. */
121#if __GNUC__ >= 4 71#if __GNUC__ >= 4
72# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 73# define STACKLEVEL __builtin_frame_address (0)
123#else 74#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
76# define STACKLEVEL ((void *)&stacklevel)
125#endif 77#endif
126 78
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 80
144#include "CoroAPI.h" 81#include "CoroAPI.h"
82#define GCoroAPI (&coroapi) /* very sneaky */
145 83
146#ifdef USE_ITHREADS 84#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 85# if CORO_PTHREAD
152static void *coro_thx; 86static void *coro_thx;
153# endif 87# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 88#endif
161 89
162# undef LOCK 90#ifdef __linux
163# define LOCK (void)0 91# include <time.h> /* for timespec */
164# undef UNLOCK 92# include <syscall.h> /* for SYS_* */
165# define UNLOCK (void)0 93# ifdef SYS_clock_gettime
166 94# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
167/* helper storage struct for Coro::AIO */ 95# define CORO_CLOCK_MONOTONIC 1
168struct io_state 96# define CORO_CLOCK_THREAD_CPUTIME_ID 3
169{ 97# endif
170 AV *res; 98#endif
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 99
177static double (*nvtime)(); /* so why doesn't it take void? */ 100static double (*nvtime)(); /* so why doesn't it take void? */
101static void (*u2time)(pTHX_ UV ret[2]);
102
103/* we hijack an hopefully unused CV flag for our purposes */
104#define CVf_SLF 0x4000
105static OP *pp_slf (pTHX);
106static void slf_destroy (pTHX_ struct coro *coro);
178 107
179static U32 cctx_gen; 108static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 109static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 110static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 111static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 112static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 113static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 114static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 115
116static AV *av_destroy; /* destruction queue */
117static SV *sv_manager; /* the manager coro */
118static SV *sv_idle; /* $Coro::idle */
187 119
188static GV *irsgv; /* $/ */ 120static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 121static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 122static SV *rv_diehook;
191static SV *rv_warnhook; 123static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 124static HV *hv_sig; /* %SIG */
193 125
194/* async_pool helper stuff */ 126/* async_pool helper stuff */
195static SV *sv_pool_rss; 127static SV *sv_pool_rss;
196static SV *sv_pool_size; 128static SV *sv_pool_size;
129static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 130static AV *av_async_pool; /* idle pool */
131static SV *sv_Coro; /* class string */
132static CV *cv_pool_handler;
198 133
199/* Coro::AnyEvent */ 134/* Coro::AnyEvent */
200static SV *sv_activity; 135static SV *sv_activity;
201 136
137/* enable processtime/realtime profiling */
138static char enable_times;
139typedef U32 coro_ts[2];
140static coro_ts time_real, time_cpu;
141static char times_valid;
142
202static struct coro_cctx *cctx_first; 143static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 144static int cctx_count, cctx_idle;
204 145
205enum { 146enum
147{
206 CC_MAPPED = 0x01, 148 CC_MAPPED = 0x01,
207 CC_NOREUSE = 0x02, /* throw this away after tracing */ 149 CC_NOREUSE = 0x02, /* throw this away after tracing */
208 CC_TRACE = 0x04, 150 CC_TRACE = 0x04,
209 CC_TRACE_SUB = 0x08, /* trace sub calls */ 151 CC_TRACE_SUB = 0x08, /* trace sub calls */
210 CC_TRACE_LINE = 0x10, /* trace each statement */ 152 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
215typedef struct coro_cctx 157typedef struct coro_cctx
216{ 158{
217 struct coro_cctx *next; 159 struct coro_cctx *next;
218 160
219 /* the stack */ 161 /* the stack */
220 void *sptr; 162 struct coro_stack stack;
221 size_t ssize;
222 163
223 /* cpu state */ 164 /* cpu state */
224 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 165 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
166#ifndef NDEBUG
225 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 167 JMPENV *idle_te; /* same as idle_sp, but for top_env */
168#endif
226 JMPENV *top_env; 169 JMPENV *top_env;
227 coro_context cctx; 170 coro_context cctx;
228 171
229 U32 gen; 172 U32 gen;
230#if CORO_USE_VALGRIND 173#if CORO_USE_VALGRIND
231 int valgrind_id; 174 int valgrind_id;
232#endif 175#endif
233 unsigned char flags; 176 unsigned char flags;
234} coro_cctx; 177} coro_cctx;
235 178
179static coro_cctx *cctx_current; /* the currently running cctx */
180
181/*****************************************************************************/
182
183static MGVTBL coro_state_vtbl;
184
236enum { 185enum
186{
237 CF_RUNNING = 0x0001, /* coroutine is running */ 187 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 188 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 189 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 190 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
191 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
192 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
241}; 193};
242 194
243/* the structure where most of the perl state is stored, overlaid on the cxstack */ 195/* the structure where most of the perl state is stored, overlaid on the cxstack */
244typedef struct 196typedef struct
245{ 197{
246 SV *defsv;
247 AV *defav;
248 SV *errsv;
249 SV *irsgv;
250#define VAR(name,type) type name; 198 #define VARx(name,expr,type) type name;
251# include "state.h" 199 #include "state.h"
252#undef VAR
253} perl_slots; 200} perl_slots;
254 201
202/* how many context stack entries do we need for perl_slots */
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 203#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 204
257/* this is a structure representing a perl-level coroutine */ 205/* this is a structure representing a perl-level coroutine */
258struct coro { 206struct coro
207{
259 /* the C coroutine allocated to this perl coroutine, if any */ 208 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 209 coro_cctx *cctx;
261 210
262 /* process data */ 211 /* ready queue */
212 struct coro *next_ready;
213
214 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 215 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 216 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 217 perl_slots *slot; /* basically the saved sp */
266 218
219 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 220 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 221 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 222 HV *hv; /* the perl hash associated with this coro, if any */
271 223
272 /* statistics */ 224 /* statistics */
273 int usecount; /* number of transfers to this coro */ 225 int usecount; /* number of transfers to this coro */
274 226
275 /* coro process data */ 227 /* coro process data */
276 int prio; 228 int prio;
277 SV *throw; /* exception to be thrown */ 229 SV *except; /* exception to be thrown */
230 SV *rouse_cb; /* last rouse callback */
231 AV *on_destroy; /* callbacks or coros to notify on destroy */
232 AV *status; /* the exit status list */
278 233
279 /* async_pool */ 234 /* async_pool */
280 SV *saved_deffh; 235 SV *saved_deffh;
236 SV *invoke_cb;
237 AV *invoke_av;
238
239 /* on_enter/on_leave */
240 AV *on_enter;
241 AV *on_leave;
242
243 /* swap_sv */
244 AV *swap_sv;
245
246 /* times */
247 coro_ts t_cpu, t_real;
281 248
282 /* linked list */ 249 /* linked list */
283 struct coro *next, *prev; 250 struct coro *next, *prev;
284}; 251};
285 252
286typedef struct coro *Coro__State; 253typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 254typedef struct coro *Coro__State_or_hashref;
288 255
256/* the following variables are effectively part of the perl context */
257/* and get copied between struct coro and these variables */
258/* the main reason we don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 259static struct CoroSLF slf_frame; /* the current slf frame */
290 260
291/** Coro ********************************************************************/ 261/** Coro ********************************************************************/
292 262
293#define PRIO_MAX 3 263#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 264#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 265#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 266#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 267#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 268#define CORO_PRIO_MIN -4
299 269
300/* for Coro.pm */ 270/* for Coro.pm */
301static SV *coro_current; 271static SV *coro_current;
302static SV *coro_readyhook; 272static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 273static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
274static CV *cv_coro_run;
304static struct coro *coro_first; 275static struct coro *coro_first;
305#define coro_nready coroapi.nready 276#define coro_nready coroapi.nready
306 277
278/** JIT *********************************************************************/
279
280#if CORO_JIT
281 /* APPLE doesn't have mmap though */
282 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
283 #ifndef CORO_JIT_TYPE
284 #if __x86_64 && CORO_JIT_UNIXY
285 #define CORO_JIT_TYPE "amd64-unix"
286 #elif __i386 && CORO_JIT_UNIXY
287 #define CORO_JIT_TYPE "x86-unix"
288 #endif
289 #endif
290#endif
291
292#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
293 #undef CORO_JIT
294#endif
295
296#if CORO_JIT
297 typedef void (*load_save_perl_slots_type)(perl_slots *);
298 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
299#endif
300
301/** Coro::Select ************************************************************/
302
303static OP *(*coro_old_pp_sselect) (pTHX);
304static SV *coro_select_select;
305
306/* horrible hack, but if it works... */
307static OP *
308coro_pp_sselect (pTHX)
309{
310 dSP;
311 PUSHMARK (SP - 4); /* fake argument list */
312 XPUSHs (coro_select_select);
313 PUTBACK;
314
315 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
316 PL_op->op_flags |= OPf_STACKED;
317 PL_op->op_private = 0;
318 return PL_ppaddr [OP_ENTERSUB](aTHX);
319}
320
321/** time stuff **************************************************************/
322
323#ifdef HAS_GETTIMEOFDAY
324
325ecb_inline void
326coro_u2time (pTHX_ UV ret[2])
327{
328 struct timeval tv;
329 gettimeofday (&tv, 0);
330
331 ret [0] = tv.tv_sec;
332 ret [1] = tv.tv_usec;
333}
334
335ecb_inline double
336coro_nvtime (void)
337{
338 struct timeval tv;
339 gettimeofday (&tv, 0);
340
341 return tv.tv_sec + tv.tv_usec * 1e-6;
342}
343
344ecb_inline void
345time_init (pTHX)
346{
347 nvtime = coro_nvtime;
348 u2time = coro_u2time;
349}
350
351#else
352
353ecb_inline void
354time_init (pTHX)
355{
356 SV **svp;
357
358 require_pv ("Time/HiRes.pm");
359
360 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
361
362 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
363 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
364
365 nvtime = INT2PTR (double (*)(), SvIV (*svp));
366
367 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
368 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
369}
370
371#endif
372
307/** lowlevel stuff **********************************************************/ 373/** lowlevel stuff **********************************************************/
308 374
309static SV * 375static SV * ecb_noinline
310coro_get_sv (pTHX_ const char *name, int create) 376coro_get_sv (pTHX_ const char *name, int create)
311{ 377{
312#if PERL_VERSION_ATLEAST (5,10,0) 378#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 379 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_sv (name, create); 380 get_sv (name, create);
315#endif 381#endif
316 return get_sv (name, create); 382 return get_sv (name, create);
317} 383}
318 384
319static AV * 385static AV * ecb_noinline
320coro_get_av (pTHX_ const char *name, int create) 386coro_get_av (pTHX_ const char *name, int create)
321{ 387{
322#if PERL_VERSION_ATLEAST (5,10,0) 388#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 389 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_av (name, create); 390 get_av (name, create);
325#endif 391#endif
326 return get_av (name, create); 392 return get_av (name, create);
327} 393}
328 394
329static HV * 395static HV * ecb_noinline
330coro_get_hv (pTHX_ const char *name, int create) 396coro_get_hv (pTHX_ const char *name, int create)
331{ 397{
332#if PERL_VERSION_ATLEAST (5,10,0) 398#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 399 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create); 400 get_hv (name, create);
335#endif 401#endif
336 return get_hv (name, create); 402 return get_hv (name, create);
337} 403}
338 404
339static AV * 405ecb_inline void
406coro_times_update (void)
407{
408#ifdef coro_clock_gettime
409 struct timespec ts;
410
411 ts.tv_sec = ts.tv_nsec = 0;
412 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
413 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
414
415 ts.tv_sec = ts.tv_nsec = 0;
416 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
417 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
418#else
419 dTHX;
420 UV tv[2];
421
422 u2time (aTHX_ tv);
423 time_real [0] = tv [0];
424 time_real [1] = tv [1] * 1000;
425#endif
426}
427
428ecb_inline void
429coro_times_add (struct coro *c)
430{
431 c->t_real [1] += time_real [1];
432 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
433 c->t_real [0] += time_real [0];
434
435 c->t_cpu [1] += time_cpu [1];
436 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
437 c->t_cpu [0] += time_cpu [0];
438}
439
440ecb_inline void
441coro_times_sub (struct coro *c)
442{
443 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
444 c->t_real [1] -= time_real [1];
445 c->t_real [0] -= time_real [0];
446
447 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
448 c->t_cpu [1] -= time_cpu [1];
449 c->t_cpu [0] -= time_cpu [0];
450}
451
452/*****************************************************************************/
453/* magic glue */
454
455#define CORO_MAGIC_type_cv 26
456#define CORO_MAGIC_type_state PERL_MAGIC_ext
457
458#define CORO_MAGIC_NN(sv, type) \
459 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
460 ? SvMAGIC (sv) \
461 : mg_find (sv, type))
462
463#define CORO_MAGIC(sv, type) \
464 (ecb_expect_true (SvMAGIC (sv)) \
465 ? CORO_MAGIC_NN (sv, type) \
466 : 0)
467
468#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
469#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
470
471ecb_inline MAGIC *
472SvSTATEhv_p (pTHX_ SV *coro)
473{
474 MAGIC *mg;
475
476 if (ecb_expect_true (
477 SvTYPE (coro) == SVt_PVHV
478 && (mg = CORO_MAGIC_state (coro))
479 && mg->mg_virtual == &coro_state_vtbl
480 ))
481 return mg;
482
483 return 0;
484}
485
486ecb_inline struct coro *
487SvSTATE_ (pTHX_ SV *coro)
488{
489 MAGIC *mg;
490
491 if (SvROK (coro))
492 coro = SvRV (coro);
493
494 mg = SvSTATEhv_p (aTHX_ coro);
495 if (!mg)
496 croak ("Coro::State object required");
497
498 return (struct coro *)mg->mg_ptr;
499}
500
501#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
502
503/* faster than SvSTATE, but expects a coroutine hv */
504#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
505#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
506
507/*****************************************************************************/
508/* padlist management and caching */
509
510ecb_inline PADLIST *
340coro_clone_padlist (pTHX_ CV *cv) 511coro_derive_padlist (pTHX_ CV *cv)
341{ 512{
342 AV *padlist = CvPADLIST (cv); 513 PADLIST *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 514 PADLIST *newpadlist;
515 PAD *newpad;
516 PADOFFSET const off = PadlistMAX (padlist) + 1;
344 517
345 newpadlist = newAV (); 518 newPADLIST(newpadlist);
519#if !PERL_VERSION_ATLEAST(5,15,3)
520 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
346 AvREAL_off (newpadlist); 521 AvREAL_off (newpadlist);
522#endif
347#if PERL_VERSION_ATLEAST (5,10,0) 523#if PERL_VERSION_ATLEAST (5,10,0)
348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 524 Perl_pad_push (aTHX_ padlist, off);
349#else 525#else
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 526 Perl_pad_push (aTHX_ padlist, off, 1);
351#endif 527#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 528 newpad = PadlistARRAY (padlist)[off];
353 --AvFILLp (padlist); 529 PadlistMAX (padlist) = off - 1;
354 530
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 531 /* Already extended to 2 elements by newPADLIST. */
356 av_store (newpadlist, 1, (SV *)newpad); 532 PadlistMAX (newpadlist) = 1;
533 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
534 PadlistARRAY (newpadlist)[1] = newpad;
357 535
358 return newpadlist; 536 return newpadlist;
359} 537}
360 538
361static void 539ecb_inline void
362free_padlist (pTHX_ AV *padlist) 540free_padlist (pTHX_ PADLIST *padlist)
363{ 541{
364 /* may be during global destruction */ 542 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 543 if (!IN_DESTRUCT)
366 { 544 {
367 I32 i = AvFILLp (padlist); 545 I32 i = PadlistMAX (padlist);
368 while (i >= 0) 546
547 while (i > 0) /* special-case index 0 */
369 { 548 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 549 /* we try to be extra-careful here */
371 if (svp) 550 PAD *pad = PadlistARRAY (padlist)[i--];
372 { 551 I32 j = PadMAX (pad);
373 SV *sv;
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))
375 SvREFCNT_dec (sv);
376 552
553 while (j >= 0)
554 SvREFCNT_dec (PadARRAY (pad)[j--]);
555
556 PadMAX (pad) = -1;
377 SvREFCNT_dec (*svp); 557 SvREFCNT_dec (pad);
378 }
379 } 558 }
380 559
560 SvREFCNT_dec (PadlistNAMES (padlist));
561
562#ifdef NEWPADAPI
563 Safefree (PadlistARRAY (padlist));
564 Safefree (padlist);
565#else
566 AvFILLp (padlist) = -1;
567 AvREAL_off (padlist);
381 SvREFCNT_dec ((SV*)padlist); 568 SvREFCNT_dec ((SV*)padlist);
569#endif
382 } 570 }
383} 571}
384 572
385static int 573static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 574coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 575{
388 AV *padlist; 576 PADLIST *padlist;
389 AV *av = (AV *)mg->mg_obj; 577 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
578 size_t len = *(size_t *)mg->mg_ptr;
390 579
391 /* casting is fun. */ 580 /* perl manages to free our internal AV and _then_ call us */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 581 if (IN_DESTRUCT)
582 return 0;
583
584 while (len--)
393 free_padlist (aTHX_ padlist); 585 free_padlist (aTHX_ padlists[len]);
394
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 586
397 return 0; 587 return 0;
398} 588}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 589
403static MGVTBL coro_cv_vtbl = { 590static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 591 0, 0, 0, 0,
405 coro_cv_free 592 coro_cv_free
406}; 593};
407 594
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443
444/* the next two functions merely cache the padlists */ 595/* the next two functions merely cache the padlists */
445static void 596ecb_inline void
446get_padlist (pTHX_ CV *cv) 597get_padlist (pTHX_ CV *cv)
447{ 598{
448 MAGIC *mg = CORO_MAGIC_cv (cv); 599 MAGIC *mg = CORO_MAGIC_cv (cv);
449 AV *av; 600 size_t *lenp;
450 601
451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 602 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 603 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
453 else 604 else
454 { 605 {
455#if CORO_PREFER_PERL_FUNCTIONS 606#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 607 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 608 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 609 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 610 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 611 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 612 SvREFCNT_dec (cp);
462#else 613#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 614 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 615#endif
465 } 616 }
466} 617}
467 618
468static void 619ecb_inline void
469put_padlist (pTHX_ CV *cv) 620put_padlist (pTHX_ CV *cv)
470{ 621{
471 MAGIC *mg = CORO_MAGIC_cv (cv); 622 MAGIC *mg = CORO_MAGIC_cv (cv);
472 AV *av;
473 623
474 if (expect_false (!mg)) 624 if (ecb_expect_false (!mg))
625 {
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 626 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
627 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
628 mg->mg_len = 1; /* so mg_free frees mg_ptr */
629 }
630 else
631 Renew (mg->mg_ptr,
632 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
633 char);
476 634
477 av = (AV *)mg->mg_obj; 635 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
478
479 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1);
481
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 636}
484 637
485/** load & save, init *******************************************************/ 638/** load & save, init *******************************************************/
639
640ecb_inline void
641swap_sv (SV *a, SV *b)
642{
643 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
644 SV tmp;
645
646 /* swap sv_any */
647 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
648
649 /* swap sv_flags */
650 SvFLAGS (&tmp) = SvFLAGS (a);
651 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
652 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
653
654#if PERL_VERSION_ATLEAST (5,10,0)
655 /* perl 5.10 and later complicates this _quite_ a bit, but it also
656 * is much faster, so no quarrels here. alternatively, we could
657 * sv_upgrade to avoid this.
658 */
659 {
660 /* swap sv_u */
661 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
662
663 /* if SvANY points to the head, we need to adjust the pointers,
664 * as the pointer for a still points to b, and maybe vice versa.
665 */
666 #define svany_in_head(type) \
667 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
668
669 if (svany_in_head (SvTYPE (a)))
670 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
671
672 if (svany_in_head (SvTYPE (b)))
673 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
674 }
675#endif
676}
677
678/* swap sv heads, at least logically */
679static void
680swap_svs (pTHX_ Coro__State c)
681{
682 int i;
683
684 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
685 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
686}
687
688#define SWAP_SVS(coro) \
689 if (ecb_expect_false ((coro)->swap_sv)) \
690 swap_svs (aTHX_ (coro))
691
692static void
693on_enterleave_call (pTHX_ SV *cb);
486 694
487static void 695static void
488load_perl (pTHX_ Coro__State c) 696load_perl (pTHX_ Coro__State c)
489{ 697{
490 perl_slots *slot = c->slot; 698 perl_slots *slot = c->slot;
491 c->slot = 0; 699 c->slot = 0;
492 700
493 PL_mainstack = c->mainstack; 701 PL_mainstack = c->mainstack;
494 702
495 GvSV (PL_defgv) = slot->defsv; 703#if CORO_JIT
496 GvAV (PL_defgv) = slot->defav; 704 load_perl_slots (slot);
497 GvSV (PL_errgv) = slot->errsv; 705#else
498 GvSV (irsgv) = slot->irsgv;
499
500 #define VAR(name,type) PL_ ## name = slot->name; 706 #define VARx(name,expr,type) expr = slot->name;
501 # include "state.h" 707 #include "state.h"
502 #undef VAR 708#endif
503 709
504 { 710 {
505 dSP; 711 dSP;
506 712
507 CV *cv; 713 CV *cv;
508 714
509 /* now do the ugly restore mess */ 715 /* now do the ugly restore mess */
510 while (expect_true (cv = (CV *)POPs)) 716 while (ecb_expect_true (cv = (CV *)POPs))
511 { 717 {
512 put_padlist (aTHX_ cv); /* mark this padlist as available */ 718 put_padlist (aTHX_ cv); /* mark this padlist as available */
513 CvDEPTH (cv) = PTR2IV (POPs); 719 CvDEPTH (cv) = PTR2IV (POPs);
514 CvPADLIST (cv) = (AV *)POPs; 720 CvPADLIST (cv) = (PADLIST *)POPs;
515 } 721 }
516 722
517 PUTBACK; 723 PUTBACK;
518 } 724 }
519 725
520 slf_frame = c->slf_frame; 726 slf_frame = c->slf_frame;
727 CORO_THROW = c->except;
728
729 if (ecb_expect_false (enable_times))
730 {
731 if (ecb_expect_false (!times_valid))
732 coro_times_update ();
733
734 coro_times_sub (c);
735 }
736
737 if (ecb_expect_false (c->on_enter))
738 {
739 int i;
740
741 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
742 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
743 }
744
745 SWAP_SVS (c);
521} 746}
522 747
523static void 748static void
524save_perl (pTHX_ Coro__State c) 749save_perl (pTHX_ Coro__State c)
525{ 750{
751 SWAP_SVS (c);
752
753 if (ecb_expect_false (c->on_leave))
754 {
755 int i;
756
757 for (i = AvFILLp (c->on_leave); i >= 0; --i)
758 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
759 }
760
761 times_valid = 0;
762
763 if (ecb_expect_false (enable_times))
764 {
765 coro_times_update (); times_valid = 1;
766 coro_times_add (c);
767 }
768
769 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 770 c->slf_frame = slf_frame;
527 771
528 { 772 {
529 dSP; 773 dSP;
530 I32 cxix = cxstack_ix; 774 I32 cxix = cxstack_ix;
… …
538 782
539 XPUSHs (Nullsv); 783 XPUSHs (Nullsv);
540 /* this loop was inspired by pp_caller */ 784 /* this loop was inspired by pp_caller */
541 for (;;) 785 for (;;)
542 { 786 {
543 while (expect_true (cxix >= 0)) 787 while (ecb_expect_true (cxix >= 0))
544 { 788 {
545 PERL_CONTEXT *cx = &ccstk[cxix--]; 789 PERL_CONTEXT *cx = &ccstk[cxix--];
546 790
547 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 791 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
548 { 792 {
549 CV *cv = cx->blk_sub.cv; 793 CV *cv = cx->blk_sub.cv;
550 794
551 if (expect_true (CvDEPTH (cv))) 795 if (ecb_expect_true (CvDEPTH (cv)))
552 { 796 {
553 EXTEND (SP, 3); 797 EXTEND (SP, 3);
554 PUSHs ((SV *)CvPADLIST (cv)); 798 PUSHs ((SV *)CvPADLIST (cv));
555 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 799 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
556 PUSHs ((SV *)cv); 800 PUSHs ((SV *)cv);
… …
559 get_padlist (aTHX_ cv); 803 get_padlist (aTHX_ cv);
560 } 804 }
561 } 805 }
562 } 806 }
563 807
564 if (expect_true (top_si->si_type == PERLSI_MAIN)) 808 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
565 break; 809 break;
566 810
567 top_si = top_si->si_prev; 811 top_si = top_si->si_prev;
568 ccstk = top_si->si_cxstack; 812 ccstk = top_si->si_cxstack;
569 cxix = top_si->si_cxix; 813 cxix = top_si->si_cxix;
… …
571 815
572 PUTBACK; 816 PUTBACK;
573 } 817 }
574 818
575 /* allocate some space on the context stack for our purposes */ 819 /* allocate some space on the context stack for our purposes */
576 /* we manually unroll here, as usually 2 slots is enough */ 820 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
577 if (SLOT_COUNT >= 1) CXINC;
578 if (SLOT_COUNT >= 2) CXINC;
579 if (SLOT_COUNT >= 3) CXINC;
580 { 821 {
581 int i; 822 unsigned int i;
823
582 for (i = 3; i < SLOT_COUNT; ++i) 824 for (i = 0; i < SLOT_COUNT; ++i)
583 CXINC; 825 CXINC;
584 } 826
585 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 827 cxstack_ix -= SLOT_COUNT; /* undo allocation */
828 }
586 829
587 c->mainstack = PL_mainstack; 830 c->mainstack = PL_mainstack;
588 831
589 { 832 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 833 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 834
592 slot->defav = GvAV (PL_defgv); 835#if CORO_JIT
593 slot->defsv = DEFSV; 836 save_perl_slots (slot);
594 slot->errsv = ERRSV; 837#else
595 slot->irsgv = GvSV (irsgv);
596
597 #define VAR(name,type) slot->name = PL_ ## name; 838 #define VARx(name,expr,type) slot->name = expr;
598 # include "state.h" 839 #include "state.h"
599 #undef VAR 840#endif
600 } 841 }
601} 842}
602 843
603/* 844/*
604 * allocate various perl stacks. This is almost an exact copy 845 * allocate various perl stacks. This is almost an exact copy
605 * of perl.c:init_stacks, except that it uses less memory 846 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 847 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 848 * not usually need a lot of stackspace.
608 */ 849 */
609#if CORO_PREFER_PERL_FUNCTIONS 850#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 851# define coro_init_stacks(thx) init_stacks ()
611#else 852#else
612static void 853static void
613coro_init_stacks (pTHX) 854coro_init_stacks (pTHX)
614{ 855{
615 PL_curstackinfo = new_stackinfo(32, 8); 856 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
616 PL_curstackinfo->si_type = PERLSI_MAIN; 857 PL_curstackinfo->si_type = PERLSI_MAIN;
617 PL_curstack = PL_curstackinfo->si_stack; 858 PL_curstack = PL_curstackinfo->si_stack;
618 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 859 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
619 860
620 PL_stack_base = AvARRAY(PL_curstack); 861 PL_stack_base = AvARRAY(PL_curstack);
… …
635#endif 876#endif
636 877
637 New(54,PL_scopestack,8,I32); 878 New(54,PL_scopestack,8,I32);
638 PL_scopestack_ix = 0; 879 PL_scopestack_ix = 0;
639 PL_scopestack_max = 8; 880 PL_scopestack_max = 8;
881#if HAS_SCOPESTACK_NAME
882 New(54,PL_scopestack_name,8,const char*);
883#endif
640 884
641 New(54,PL_savestack,24,ANY); 885 New(54,PL_savestack,24,ANY);
642 PL_savestack_ix = 0; 886 PL_savestack_ix = 0;
643 PL_savestack_max = 24; 887 PL_savestack_max = 24;
644 888
… …
672 } 916 }
673 917
674 Safefree (PL_tmps_stack); 918 Safefree (PL_tmps_stack);
675 Safefree (PL_markstack); 919 Safefree (PL_markstack);
676 Safefree (PL_scopestack); 920 Safefree (PL_scopestack);
921#if HAS_SCOPESTACK_NAME
922 Safefree (PL_scopestack_name);
923#endif
677 Safefree (PL_savestack); 924 Safefree (PL_savestack);
678#if !PERL_VERSION_ATLEAST (5,10,0) 925#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 926 Safefree (PL_retstack);
680#endif 927#endif
681} 928}
682 929
930#define CORO_RSS \
931 rss += sizeof (SYM (curstackinfo)); \
932 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
933 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
934 rss += SYM (tmps_max) * sizeof (SV *); \
935 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
936 rss += SYM (scopestack_max) * sizeof (I32); \
937 rss += SYM (savestack_max) * sizeof (ANY);
938
683static size_t 939static size_t
684coro_rss (pTHX_ struct coro *coro) 940coro_rss (pTHX_ struct coro *coro)
685{ 941{
686 size_t rss = sizeof (*coro); 942 size_t rss = sizeof (*coro);
687 943
688 if (coro->mainstack) 944 if (coro->mainstack)
689 { 945 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 946 if (coro->flags & CF_RUNNING)
694 { 947 {
695 slot = &tmp_slot; 948 #define SYM(sym) PL_ ## sym
696 949 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 950 #undef SYM
700 } 951 }
701 else 952 else
702 slot = coro->slot;
703
704 if (slot)
705 { 953 {
706 rss += sizeof (slot->curstackinfo); 954 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 955 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 956 #undef SYM
709 rss += slot->tmps_max * sizeof (SV *);
710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
711 rss += slot->scopestack_max * sizeof (I32);
712 rss += slot->savestack_max * sizeof (ANY);
713
714#if !PERL_VERSION_ATLEAST (5,10,0)
715 rss += slot->retstack_max * sizeof (OP *);
716#endif
717 } 957 }
718 } 958 }
719 959
720 return rss; 960 return rss;
721} 961}
… …
734#endif 974#endif
735 975
736/* 976/*
737 * This overrides the default magic get method of %SIG elements. 977 * This overrides the default magic get method of %SIG elements.
738 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 978 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
739 * and instead of tryign to save and restore the hash elements, we just provide 979 * and instead of trying to save and restore the hash elements (extremely slow),
740 * readback here. 980 * we just provide our own readback here.
741 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
742 * not expecting this to actually change the hook. This is a potential problem
743 * when a schedule happens then, but we ignore this.
744 */ 981 */
745static int 982static int ecb_cold
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 983coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 984{
748 const char *s = MgPV_nolen_const (mg); 985 const char *s = MgPV_nolen_const (mg);
749 986
750 if (*s == '_') 987 if (*s == '_')
751 { 988 {
752 SV **svp = 0; 989 SV **svp = 0;
753 990
754 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 991 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
755 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 992 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
756 993
757 if (svp) 994 if (svp)
758 { 995 {
759 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 996 SV *ssv;
997
998 if (!*svp)
999 ssv = &PL_sv_undef;
1000 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1001 ssv = sv_2mortal (newRV_inc (*svp));
1002 else
1003 ssv = *svp;
1004
1005 sv_setsv (sv, ssv);
760 return 0; 1006 return 0;
761 } 1007 }
762 } 1008 }
763 1009
764 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1010 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
765} 1011}
766 1012
767static int 1013static int ecb_cold
768coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1014coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
769{ 1015{
770 const char *s = MgPV_nolen_const (mg); 1016 const char *s = MgPV_nolen_const (mg);
771 1017
772 if (*s == '_') 1018 if (*s == '_')
… …
786 } 1032 }
787 1033
788 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1034 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
789} 1035}
790 1036
791static int 1037static int ecb_cold
792coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1038coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
793{ 1039{
794 const char *s = MgPV_nolen_const (mg); 1040 const char *s = MgPV_nolen_const (mg);
795 1041
796 if (*s == '_') 1042 if (*s == '_')
… …
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1047 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802 1048
803 if (svp) 1049 if (svp)
804 { 1050 {
805 SV *old = *svp; 1051 SV *old = *svp;
806 *svp = newSVsv (sv); 1052 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 1053 SvREFCNT_dec (old);
808 return 0; 1054 return 0;
809 } 1055 }
810 } 1056 }
811 1057
… …
823slf_check_nop (pTHX_ struct CoroSLF *frame) 1069slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 1070{
825 return 0; 1071 return 0;
826} 1072}
827 1073
828static void 1074static int
1075slf_check_repeat (pTHX_ struct CoroSLF *frame)
1076{
1077 return 1;
1078}
1079
1080static UNOP init_perl_op;
1081
1082ecb_noinline static void /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 1083init_perl (pTHX_ struct coro *coro)
830{ 1084{
831 /* 1085 /*
832 * emulate part of the perl startup here. 1086 * emulate part of the perl startup here.
833 */ 1087 */
834 coro_init_stacks (aTHX); 1088 coro_init_stacks (aTHX);
835 1089
836 PL_runops = RUNOPS_DEFAULT; 1090 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 1091 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 1092 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 1093 PL_comppad = 0;
1094 PL_comppad_name = 0;
1095 PL_comppad_name_fill = 0;
1096 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 1097 PL_curpm = 0;
841 PL_curpad = 0; 1098 PL_curpad = 0;
842 PL_localizing = 0; 1099 PL_localizing = 0;
843 PL_dirty = 0;
844 PL_restartop = 0; 1100 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 1101#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 1102 PL_parser = 0;
847#endif 1103#endif
1104 PL_hints = 0;
848 1105
849 /* recreate the die/warn hooks */ 1106 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1107 PL_diehook = SvREFCNT_inc (rv_diehook);
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1108 PL_warnhook = SvREFCNT_inc (rv_warnhook);
852 1109
853 GvSV (PL_defgv) = newSV (0); 1110 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 1111 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 1112 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1113 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1114 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 1115 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1116 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 1117
860 { 1118 {
861 dSP; 1119 dSP;
862 UNOP myop; 1120 UNOP myop;
863 1121
864 Zero (&myop, 1, UNOP); 1122 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 1123 myop.op_next = Nullop;
1124 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 1125 myop.op_flags = OPf_WANT_VOID;
867 1126
868 PUSHMARK (SP); 1127 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1128 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 1129 PUTBACK;
871 PL_op = (OP *)&myop; 1130 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1131 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 1132 }
875 1133
876 /* this newly created coroutine might be run on an existing cctx which most 1134 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1135 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 1136 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1137 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1138 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881} 1139 slf_frame.destroy = 0;
882 1140
1141 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1142 init_perl_op.op_next = PL_op;
1143 init_perl_op.op_type = OP_ENTERSUB;
1144 init_perl_op.op_ppaddr = pp_slf;
1145 /* no flags etc. required, as an init function won't be called */
1146
1147 PL_op = (OP *)&init_perl_op;
1148
1149 /* copy throw, in case it was set before init_perl */
1150 CORO_THROW = coro->except;
1151
1152 SWAP_SVS (coro);
1153
1154 if (ecb_expect_false (enable_times))
1155 {
1156 coro_times_update ();
1157 coro_times_sub (coro);
1158 }
1159}
1160
883static void 1161static void
884coro_destruct (pTHX_ struct coro *coro) 1162coro_unwind_stacks (pTHX)
885{ 1163{
886 if (!IN_DESTRUCT) 1164 if (!IN_DESTRUCT)
887 { 1165 {
888 /* restore all saved variables and stuff */ 1166 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 1167 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 1175 POPSTACK_TO (PL_mainstack);
898 1176
899 /* unwind main stack */ 1177 /* unwind main stack */
900 dounwind (-1); 1178 dounwind (-1);
901 } 1179 }
1180}
902 1181
903 SvREFCNT_dec (GvSV (PL_defgv)); 1182static void
904 SvREFCNT_dec (GvAV (PL_defgv)); 1183destroy_perl (pTHX_ struct coro *coro)
905 SvREFCNT_dec (GvSV (PL_errgv)); 1184{
906 SvREFCNT_dec (PL_defoutgv); 1185 SV *svf [9];
907 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv));
909 1186
910 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook);
912 1187 {
1188 SV *old_current = SvRV (coro_current);
1189 struct coro *current = SvSTATE (old_current);
1190
1191 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1192
1193 save_perl (aTHX_ current);
1194
1195 /* this will cause transfer_check to croak on block*/
1196 SvRV_set (coro_current, (SV *)coro->hv);
1197
1198 load_perl (aTHX_ coro);
1199
1200 coro_unwind_stacks (aTHX);
1201
1202 /* restore swapped sv's */
1203 SWAP_SVS (coro);
1204
1205 coro_destruct_stacks (aTHX);
1206
1207 /* now save some sv's to be free'd later */
1208 svf [0] = GvSV (PL_defgv);
1209 svf [1] = (SV *)GvAV (PL_defgv);
1210 svf [2] = GvSV (PL_errgv);
1211 svf [3] = (SV *)PL_defoutgv;
1212 svf [4] = PL_rs;
1213 svf [5] = GvSV (irsgv);
1214 svf [6] = (SV *)GvHV (PL_hintgv);
1215 svf [7] = PL_diehook;
1216 svf [8] = PL_warnhook;
1217 assert (9 == sizeof (svf) / sizeof (*svf));
1218
1219 SvRV_set (coro_current, old_current);
1220
1221 load_perl (aTHX_ current);
1222 }
1223
1224 {
1225 unsigned int i;
1226
1227 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1228 SvREFCNT_dec (svf [i]);
1229
913 SvREFCNT_dec (coro->saved_deffh); 1230 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1231 SvREFCNT_dec (coro->rouse_cb);
915 1232 SvREFCNT_dec (coro->invoke_cb);
916 coro_destruct_stacks (aTHX); 1233 SvREFCNT_dec (coro->invoke_av);
1234 }
917} 1235}
918 1236
919INLINE void 1237ecb_inline void
920free_coro_mortal (pTHX) 1238free_coro_mortal (pTHX)
921{ 1239{
922 if (expect_true (coro_mortal)) 1240 if (ecb_expect_true (coro_mortal))
923 { 1241 {
924 SvREFCNT_dec (coro_mortal); 1242 SvREFCNT_dec ((SV *)coro_mortal);
925 coro_mortal = 0; 1243 coro_mortal = 0;
926 } 1244 }
927} 1245}
928 1246
929static int 1247static int
930runops_trace (pTHX) 1248runops_trace (pTHX)
931{ 1249{
932 COP *oldcop = 0; 1250 COP *oldcop = 0;
933 int oldcxix = -2; 1251 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1252
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1253 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1254 {
939 PERL_ASYNC_CHECK (); 1255 PERL_ASYNC_CHECK ();
940 1256
941 if (cctx->flags & CC_TRACE_ALL) 1257 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1258 {
943 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1259 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
944 { 1260 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1261 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1262 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1263 AV *av = newAV (); /* return values */
948 SV **cb; 1264 SV **cb;
… …
985 1301
986 if (PL_curcop != &PL_compiling) 1302 if (PL_curcop != &PL_compiling)
987 { 1303 {
988 SV **cb; 1304 SV **cb;
989 1305
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1306 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1307 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1308 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1309
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1310 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1311 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1312 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1313 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1314 SV *fullname = sv_2mortal (newSV (0));
1000 1315
1001 if (isGV (gv)) 1316 if (isGV (gv))
… …
1006 SAVETMPS; 1321 SAVETMPS;
1007 EXTEND (SP, 3); 1322 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1323 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1324 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1325 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1326 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1327 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1328 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1014 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1329 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1330 SPAGAIN;
1016 FREETMPS; 1331 FREETMPS;
… …
1019 } 1334 }
1020 1335
1021 oldcxix = cxstack_ix; 1336 oldcxix = cxstack_ix;
1022 } 1337 }
1023 1338
1024 if (cctx->flags & CC_TRACE_LINE) 1339 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1340 {
1026 dSP; 1341 dSP;
1027 1342
1028 PL_runops = RUNOPS_DEFAULT; 1343 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1344 ENTER;
… …
1048 1363
1049 TAINT_NOT; 1364 TAINT_NOT;
1050 return 0; 1365 return 0;
1051} 1366}
1052 1367
1368static struct CoroSLF cctx_ssl_frame;
1369
1053static void 1370static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1371slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1372{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1373 ta->prev = 0;
1058} 1374}
1059 1375
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1376static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1377slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */
1063/* also initialises PL_top_env */
1064static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx)
1066{ 1378{
1067 dSP; 1379 *frame = cctx_ssl_frame;
1068 UNOP myop;
1069 1380
1381 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1382}
1383
1384/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1385static void ecb_noinline
1386cctx_prepare (pTHX)
1387{
1070 PL_top_env = &PL_start_env; 1388 PL_top_env = &PL_start_env;
1071 1389
1072 if (cctx->flags & CC_TRACE) 1390 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1391 PL_runops = runops_trace;
1074 1392
1075 Zero (&myop, 1, UNOP); 1393 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1394 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1395 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1396 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1397
1079 PUSHMARK (SP); 1398 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1399 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1400
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1401 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1402 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1403}
1088 1404
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1405/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1406ecb_inline void
1091transfer_tail (pTHX) 1407transfer_tail (pTHX)
1092{ 1408{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX); 1409 free_coro_mortal (aTHX);
1098 UNLOCK; 1410}
1099 1411
1100 if (expect_false (next->throw)) 1412/* try to exit the same way perl's main function would do */
1101 { 1413/* we do not bother resetting the environment or other things *7
1102 SV *exception = sv_2mortal (next->throw); 1414/* that are not, uhm, essential */
1103 1415/* this obviously also doesn't work when perl is embedded */
1104 next->throw = 0; 1416static void ecb_noinline ecb_cold
1105 sv_setsv (ERRSV, exception); 1417perlish_exit (pTHX)
1106 croak (0); 1418{
1107 } 1419 int exitstatus = perl_destruct (PL_curinterp);
1420 perl_free (PL_curinterp);
1421 exit (exitstatus);
1108} 1422}
1109 1423
1110/* 1424/*
1111 * this is a _very_ stripped down perl interpreter ;) 1425 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1426 */
… …
1124 /* normally we would need to skip the entersub here */ 1438 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1439 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1440 /* PL_nop = PL_nop->op_next */
1127 1441
1128 /* inject a fake subroutine call to cctx_init */ 1442 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1443 cctx_prepare (aTHX);
1130 1444
1131 /* cctx_run is the alternative tail of transfer() */ 1445 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1446 transfer_tail (aTHX);
1134 1447
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1448 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1449 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1450 perl_run (PL_curinterp);
1451 /*
1452 * Unfortunately, there is no way to get at the return values of the
1453 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1454 * runtime errors here, as this is just a random interpreter, not a thread.
1455 */
1138 1456
1139 /* 1457 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1458 * If perl-run returns we assume exit() was being called or the coro
1141 * fell off the end, which seems to be the only valid (non-bug) 1459 * fell off the end, which seems to be the only valid (non-bug)
1142 * reason for perl_run to return. We try to exit by jumping to the 1460 * reason for perl_run to return. We try to mimic whatever perl is normally
1143 * bootstrap-time "top" top_env, as we cannot restore the "main" 1461 * doing in that case. YMMV.
1144 * coroutine as Coro has no such concept
1145 */ 1462 */
1146 PL_top_env = main_top_env; 1463 perlish_exit (aTHX);
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1464 }
1149} 1465}
1150 1466
1151static coro_cctx * 1467static coro_cctx *
1152cctx_new () 1468cctx_new (void)
1153{ 1469{
1154 coro_cctx *cctx; 1470 coro_cctx *cctx;
1155 1471
1156 ++cctx_count; 1472 ++cctx_count;
1157 New (0, cctx, 1, coro_cctx); 1473 New (0, cctx, 1, coro_cctx);
… …
1163 return cctx; 1479 return cctx;
1164} 1480}
1165 1481
1166/* create a new cctx only suitable as source */ 1482/* create a new cctx only suitable as source */
1167static coro_cctx * 1483static coro_cctx *
1168cctx_new_empty () 1484cctx_new_empty (void)
1169{ 1485{
1170 coro_cctx *cctx = cctx_new (); 1486 coro_cctx *cctx = cctx_new ();
1171 1487
1172 cctx->sptr = 0; 1488 cctx->stack.sptr = 0;
1173 coro_create (&cctx->cctx, 0, 0, 0, 0); 1489 coro_create (&cctx->cctx, 0, 0, 0, 0);
1174 1490
1175 return cctx; 1491 return cctx;
1176} 1492}
1177 1493
1178/* create a new cctx suitable as destination/running a perl interpreter */ 1494/* create a new cctx suitable as destination/running a perl interpreter */
1179static coro_cctx * 1495static coro_cctx *
1180cctx_new_run () 1496cctx_new_run (void)
1181{ 1497{
1182 coro_cctx *cctx = cctx_new (); 1498 coro_cctx *cctx = cctx_new ();
1183 void *stack_start;
1184 size_t stack_size;
1185 1499
1186#if HAVE_MMAP 1500 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1187 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1188 /* mmap supposedly does allocate-on-write for us */
1189 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1190
1191 if (cctx->sptr != (void *)-1)
1192 {
1193 #if CORO_STACKGUARD
1194 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1195 #endif
1196 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1197 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1198 cctx->flags |= CC_MAPPED;
1199 } 1501 {
1200 else
1201#endif
1202 {
1203 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1204 New (0, cctx->sptr, cctx_stacksize, long);
1205
1206 if (!cctx->sptr)
1207 {
1208 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1502 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1209 _exit (EXIT_FAILURE); 1503 _exit (EXIT_FAILURE);
1210 }
1211
1212 stack_start = cctx->sptr;
1213 stack_size = cctx->ssize;
1214 } 1504 }
1215 1505
1216 #if CORO_USE_VALGRIND
1217 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1218 #endif
1219
1220 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1506 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1221 1507
1222 return cctx; 1508 return cctx;
1223} 1509}
1224 1510
1225static void 1511static void
1226cctx_destroy (coro_cctx *cctx) 1512cctx_destroy (coro_cctx *cctx)
1227{ 1513{
1228 if (!cctx) 1514 if (!cctx)
1229 return; 1515 return;
1230 1516
1517 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1518
1231 --cctx_count; 1519 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1520 coro_destroy (&cctx->cctx);
1233 1521
1234 /* coro_transfer creates new, empty cctx's */ 1522 coro_stack_free (&cctx->stack);
1235 if (cctx->sptr)
1236 {
1237 #if CORO_USE_VALGRIND
1238 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1239 #endif
1240
1241#if HAVE_MMAP
1242 if (cctx->flags & CC_MAPPED)
1243 munmap (cctx->sptr, cctx->ssize);
1244 else
1245#endif
1246 Safefree (cctx->sptr);
1247 }
1248 1523
1249 Safefree (cctx); 1524 Safefree (cctx);
1250} 1525}
1251 1526
1252/* wether this cctx should be destructed */ 1527/* wether this cctx should be destructed */
1253#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1528#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1254 1529
1255static coro_cctx * 1530static coro_cctx *
1256cctx_get (pTHX) 1531cctx_get (pTHX)
1257{ 1532{
1258 while (expect_true (cctx_first)) 1533 while (ecb_expect_true (cctx_first))
1259 { 1534 {
1260 coro_cctx *cctx = cctx_first; 1535 coro_cctx *cctx = cctx_first;
1261 cctx_first = cctx->next; 1536 cctx_first = cctx->next;
1262 --cctx_idle; 1537 --cctx_idle;
1263 1538
1264 if (expect_true (!CCTX_EXPIRED (cctx))) 1539 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1265 return cctx; 1540 return cctx;
1266 1541
1267 cctx_destroy (cctx); 1542 cctx_destroy (cctx);
1268 } 1543 }
1269 1544
… …
1271} 1546}
1272 1547
1273static void 1548static void
1274cctx_put (coro_cctx *cctx) 1549cctx_put (coro_cctx *cctx)
1275{ 1550{
1276 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1551 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1277 1552
1278 /* free another cctx if overlimit */ 1553 /* free another cctx if overlimit */
1279 if (expect_false (cctx_idle >= cctx_max_idle)) 1554 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1280 { 1555 {
1281 coro_cctx *first = cctx_first; 1556 coro_cctx *first = cctx_first;
1282 cctx_first = first->next; 1557 cctx_first = first->next;
1283 --cctx_idle; 1558 --cctx_idle;
1284 1559
… …
1293/** coroutine switching *****************************************************/ 1568/** coroutine switching *****************************************************/
1294 1569
1295static void 1570static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1571transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1572{
1573 /* TODO: throwing up here is considered harmful */
1574
1298 if (expect_true (prev != next)) 1575 if (ecb_expect_true (prev != next))
1299 { 1576 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1577 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1578 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1302 1579
1303 if (expect_false (next->flags & CF_RUNNING)) 1580 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1304 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1305
1306 if (expect_false (next->flags & CF_DESTROYED))
1307 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1581 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1308 1582
1309#if !PERL_VERSION_ATLEAST (5,10,0) 1583#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1584 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1311 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1585 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1312#endif 1586#endif
1313 } 1587 }
1314} 1588}
1315 1589
1316/* always use the TRANSFER macro */ 1590/* always use the TRANSFER macro */
1317static void NOINLINE 1591static void ecb_noinline /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1592transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1593{
1320 dSTACKLEVEL; 1594 dSTACKLEVEL;
1321 1595
1322 /* sometimes transfer is only called to set idle_sp */ 1596 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1597 if (ecb_expect_false (!prev))
1324 { 1598 {
1325 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1599 cctx_current->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1600 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1601 }
1328 else if (expect_true (prev != next)) 1602 else if (ecb_expect_true (prev != next))
1329 { 1603 {
1330 coro_cctx *prev__cctx; 1604 coro_cctx *cctx_prev;
1331 1605
1332 if (expect_false (prev->flags & CF_NEW)) 1606 if (ecb_expect_false (prev->flags & CF_NEW))
1333 { 1607 {
1334 /* create a new empty/source context */ 1608 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1609 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1610 prev->flags |= CF_RUNNING;
1338 } 1611 }
1339 1612
1340 prev->flags &= ~CF_RUNNING; 1613 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1614 next->flags |= CF_RUNNING;
1342 1615
1343 LOCK;
1344
1345 /* first get rid of the old state */ 1616 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1617 save_perl (aTHX_ prev);
1347 1618
1348 if (expect_false (next->flags & CF_NEW)) 1619 if (ecb_expect_false (next->flags & CF_NEW))
1349 { 1620 {
1350 /* need to start coroutine */ 1621 /* need to start coroutine */
1351 next->flags &= ~CF_NEW; 1622 next->flags &= ~CF_NEW;
1352 /* setup coroutine call */ 1623 /* setup coroutine call */
1353 coro_setup (aTHX_ next); 1624 init_perl (aTHX_ next);
1354 } 1625 }
1355 else 1626 else
1356 load_perl (aTHX_ next); 1627 load_perl (aTHX_ next);
1357 1628
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1629 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1630 if (ecb_expect_true (
1362 prev__cctx->idle_sp == (void *)stacklevel 1631 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1632 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1633 && !force_cctx
1365 )) 1634 ))
1366 { 1635 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1636 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1368 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1637 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1369 1638
1370 prev->cctx = 0;
1371
1372 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1639 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1373 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1640 /* without this the next cctx_get might destroy the running cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1641 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1642 if (ecb_expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1643 next->cctx = cctx_get (aTHX);
1377 1644
1378 cctx_put (prev__cctx); 1645 cctx_put (cctx_current);
1379 } 1646 }
1647 else
1648 prev->cctx = cctx_current;
1380 1649
1381 ++next->usecount; 1650 ++next->usecount;
1382 1651
1383 if (expect_true (!next->cctx)) 1652 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1653 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1654
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1655 next->cctx = 0;
1387 transfer_next = next;
1388 1656
1389 if (expect_false (prev__cctx != next->cctx)) 1657 if (ecb_expect_false (cctx_prev != cctx_current))
1390 { 1658 {
1391 prev__cctx->top_env = PL_top_env; 1659 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1660 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1661 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1662 }
1395 1663
1396 transfer_tail (aTHX); 1664 transfer_tail (aTHX);
1397 } 1665 }
1398} 1666}
… …
1400#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1668#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1401#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1669#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1402 1670
1403/** high level stuff ********************************************************/ 1671/** high level stuff ********************************************************/
1404 1672
1673/* this function is actually Coro, not Coro::State, but we call it from here */
1674/* because it is convenient - but it hasn't been declared yet for that reason */
1405static int 1675static void
1676coro_call_on_destroy (pTHX_ struct coro *coro);
1677
1678static void
1406coro_state_destroy (pTHX_ struct coro *coro) 1679coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1680{
1408 if (coro->flags & CF_DESTROYED) 1681 if (coro->flags & CF_ZOMBIE)
1409 return 0; 1682 return;
1410 1683
1684 slf_destroy (aTHX_ coro);
1685
1411 coro->flags |= CF_DESTROYED; 1686 coro->flags |= CF_ZOMBIE;
1412 1687
1413 if (coro->flags & CF_READY) 1688 if (coro->flags & CF_READY)
1414 { 1689 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1690 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1691 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1692 --coro_nready;
1419 UNLOCK;
1420 } 1693 }
1421 else 1694 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1695 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423
1424 if (coro->mainstack && coro->mainstack != main_mainstack)
1425 {
1426 struct coro temp;
1427
1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1429
1430 save_perl (aTHX_ &temp);
1431 load_perl (aTHX_ coro);
1432
1433 coro_destruct (aTHX_ coro);
1434
1435 load_perl (aTHX_ &temp);
1436
1437 coro->slot = 0;
1438 }
1439
1440 cctx_destroy (coro->cctx);
1441 SvREFCNT_dec (coro->args);
1442 1696
1443 if (coro->next) coro->next->prev = coro->prev; 1697 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1698 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1699 if (coro == coro_first) coro_first = coro->next;
1446 1700
1447 return 1; 1701 if (coro->mainstack
1702 && coro->mainstack != main_mainstack
1703 && coro->slot
1704 && !PL_dirty)
1705 destroy_perl (aTHX_ coro);
1706
1707 cctx_destroy (coro->cctx);
1708 SvREFCNT_dec (coro->startcv);
1709 SvREFCNT_dec (coro->args);
1710 SvREFCNT_dec (coro->swap_sv);
1711 SvREFCNT_dec (CORO_THROW);
1712
1713 coro_call_on_destroy (aTHX_ coro);
1714
1715 /* more destruction mayhem in coro_state_free */
1448} 1716}
1449 1717
1450static int 1718static int
1451coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1719coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1452{ 1720{
1453 struct coro *coro = (struct coro *)mg->mg_ptr; 1721 struct coro *coro = (struct coro *)mg->mg_ptr;
1454 mg->mg_ptr = 0; 1722 mg->mg_ptr = 0;
1455 1723
1456 coro->hv = 0;
1457
1458 if (--coro->refcnt < 0)
1459 {
1460 coro_state_destroy (aTHX_ coro); 1724 coro_state_destroy (aTHX_ coro);
1725 SvREFCNT_dec (coro->on_destroy);
1726 SvREFCNT_dec (coro->status);
1727
1461 Safefree (coro); 1728 Safefree (coro);
1462 }
1463 1729
1464 return 0; 1730 return 0;
1465} 1731}
1466 1732
1467static int 1733static int ecb_cold
1468coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1734coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1469{ 1735{
1470 struct coro *coro = (struct coro *)mg->mg_ptr; 1736 /* called when perl clones the current process the slow way (windows process emulation) */
1471 1737 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1472 ++coro->refcnt; 1738 mg->mg_ptr = 0;
1739 mg->mg_virtual = 0;
1473 1740
1474 return 0; 1741 return 0;
1475} 1742}
1476 1743
1477static MGVTBL coro_state_vtbl = { 1744static MGVTBL coro_state_vtbl = {
… …
1502 TRANSFER (ta, 1); 1769 TRANSFER (ta, 1);
1503} 1770}
1504 1771
1505/** Coro ********************************************************************/ 1772/** Coro ********************************************************************/
1506 1773
1507static void 1774ecb_inline void
1508coro_enq (pTHX_ SV *coro_sv) 1775coro_enq (pTHX_ struct coro *coro)
1509{ 1776{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1777 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1511}
1512 1778
1513static SV * 1779 SvREFCNT_inc_NN (coro->hv);
1780
1781 coro->next_ready = 0;
1782 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1783 ready [1] = coro;
1784}
1785
1786ecb_inline struct coro *
1514coro_deq (pTHX) 1787coro_deq (pTHX)
1515{ 1788{
1516 int prio; 1789 int prio;
1517 1790
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1791 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1519 if (AvFILLp (coro_ready [prio]) >= 0) 1792 {
1520 return av_shift (coro_ready [prio]); 1793 struct coro **ready = coro_ready [prio];
1794
1795 if (ready [0])
1796 {
1797 struct coro *coro = ready [0];
1798 ready [0] = coro->next_ready;
1799 return coro;
1800 }
1801 }
1521 1802
1522 return 0; 1803 return 0;
1804}
1805
1806static void
1807invoke_sv_ready_hook_helper (void)
1808{
1809 dTHX;
1810 dSP;
1811
1812 ENTER;
1813 SAVETMPS;
1814
1815 PUSHMARK (SP);
1816 PUTBACK;
1817 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1818
1819 FREETMPS;
1820 LEAVE;
1523} 1821}
1524 1822
1525static int 1823static int
1526api_ready (pTHX_ SV *coro_sv) 1824api_ready (pTHX_ SV *coro_sv)
1527{ 1825{
1528 struct coro *coro;
1529 SV *sv_hook;
1530 void (*xs_hook)(void);
1531
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1826 struct coro *coro = SvSTATE (coro_sv);
1536 1827
1537 if (coro->flags & CF_READY) 1828 if (coro->flags & CF_READY)
1538 return 0; 1829 return 0;
1539 1830
1540 coro->flags |= CF_READY; 1831 coro->flags |= CF_READY;
1541 1832
1542 LOCK; 1833 coro_enq (aTHX_ coro);
1543 1834
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1835 if (!coro_nready++)
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1836 if (coroapi.readyhook)
1546 1837 coroapi.readyhook ();
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1548 ++coro_nready;
1549
1550 UNLOCK;
1551
1552 if (sv_hook)
1553 {
1554 dSP;
1555
1556 ENTER;
1557 SAVETMPS;
1558
1559 PUSHMARK (SP);
1560 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD);
1562 SPAGAIN;
1563
1564 FREETMPS;
1565 LEAVE;
1566 }
1567
1568 if (xs_hook)
1569 xs_hook ();
1570 1838
1571 return 1; 1839 return 1;
1572} 1840}
1573 1841
1574static int 1842static int
1575api_is_ready (pTHX_ SV *coro_sv) 1843api_is_ready (pTHX_ SV *coro_sv)
1576{ 1844{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1845 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1846}
1579 1847
1580INLINE void 1848/* expects to own a reference to next->hv */
1849ecb_inline void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1850prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1851{
1583 SV *prev_sv, *next_sv;
1584
1585 for (;;)
1586 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX);
1589
1590 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv))
1592 {
1593 dSP;
1594 UNLOCK;
1595
1596 ENTER;
1597 SAVETMPS;
1598
1599 PUSHMARK (SP);
1600 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1603
1604 FREETMPS;
1605 LEAVE;
1606 continue;
1607 }
1608
1609 ta->next = SvSTATE (next_sv);
1610
1611 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */
1617 continue;
1618 }
1619
1620 --coro_nready;
1621 UNLOCK;
1622 break;
1623 }
1624
1625 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1852 SV *prev_sv = SvRV (coro_current);
1853
1627 ta->prev = SvSTATE (prev_sv); 1854 ta->prev = SvSTATE_hv (prev_sv);
1855 ta->next = next;
1856
1628 TRANSFER_CHECK (*ta); 1857 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1858
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1859 SvRV_set (coro_current, (SV *)next->hv);
1632 1860
1633 LOCK;
1634 free_coro_mortal (aTHX); 1861 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1862 coro_mortal = prev_sv;
1636 UNLOCK;
1637} 1863}
1638 1864
1639INLINE void 1865static void
1866prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1867{
1868 for (;;)
1869 {
1870 struct coro *next = coro_deq (aTHX);
1871
1872 if (ecb_expect_true (next))
1873 {
1874 /* cannot transfer to destroyed coros, skip and look for next */
1875 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1876 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1877 else
1878 {
1879 next->flags &= ~CF_READY;
1880 --coro_nready;
1881
1882 prepare_schedule_to (aTHX_ ta, next);
1883 break;
1884 }
1885 }
1886 else
1887 {
1888 /* nothing to schedule: call the idle handler */
1889 if (SvROK (sv_idle)
1890 && SvOBJECT (SvRV (sv_idle)))
1891 {
1892 if (SvRV (sv_idle) == SvRV (coro_current))
1893 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1894
1895 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1896 api_ready (aTHX_ SvRV (sv_idle));
1897 --coro_nready;
1898 }
1899 else
1900 {
1901 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1902 dSP;
1903
1904 ENTER;
1905 SAVETMPS;
1906
1907 PUSHMARK (SP);
1908 PUTBACK;
1909 call_sv (sv_idle, G_VOID | G_DISCARD);
1910
1911 FREETMPS;
1912 LEAVE;
1913 }
1914 }
1915 }
1916}
1917
1918ecb_inline void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1919prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1920{
1642 api_ready (aTHX_ coro_current); 1921 api_ready (aTHX_ coro_current);
1643 prepare_schedule (aTHX_ ta); 1922 prepare_schedule (aTHX_ ta);
1644} 1923}
1645 1924
1646INLINE void 1925ecb_inline void
1647prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1926prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1648{ 1927{
1649 SV *prev = SvRV (coro_current); 1928 SV *prev = SvRV (coro_current);
1650 1929
1651 if (coro_nready) 1930 if (coro_nready)
… …
1664 1943
1665 prepare_schedule (aTHX_ &ta); 1944 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1945 TRANSFER (ta, 1);
1667} 1946}
1668 1947
1948static void
1949api_schedule_to (pTHX_ SV *coro_sv)
1950{
1951 struct coro_transfer_args ta;
1952 struct coro *next = SvSTATE (coro_sv);
1953
1954 SvREFCNT_inc_NN (coro_sv);
1955 prepare_schedule_to (aTHX_ &ta, next);
1956}
1957
1669static int 1958static int
1670api_cede (pTHX) 1959api_cede (pTHX)
1671{ 1960{
1672 struct coro_transfer_args ta; 1961 struct coro_transfer_args ta;
1673 1962
1674 prepare_cede (aTHX_ &ta); 1963 prepare_cede (aTHX_ &ta);
1675 1964
1676 if (expect_true (ta.prev != ta.next)) 1965 if (ecb_expect_true (ta.prev != ta.next))
1677 { 1966 {
1678 TRANSFER (ta, 1); 1967 TRANSFER (ta, 1);
1679 return 1; 1968 return 1;
1680 } 1969 }
1681 else 1970 else
… …
1700static void 1989static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 1990api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 1991{
1703 struct coro *coro = SvSTATE (coro_sv); 1992 struct coro *coro = SvSTATE (coro_sv);
1704 1993
1994 if (coro->flags & CF_RUNNING)
1995 croak ("cannot enable tracing on a running coroutine, caught");
1996
1705 if (flags & CC_TRACE) 1997 if (flags & CC_TRACE)
1706 { 1998 {
1707 if (!coro->cctx) 1999 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 2000 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 2001 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 2002 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 2003
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2004 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 2005 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2006 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 2007 {
… …
1720 else 2012 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 2013 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 2014 }
1723} 2015}
1724 2016
2017static void
2018coro_push_av (pTHX_ AV *av, I32 gimme_v)
2019{
2020 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2021 {
2022 dSP;
2023
2024 if (gimme_v == G_SCALAR)
2025 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2026 else
2027 {
2028 int i;
2029 EXTEND (SP, AvFILLp (av) + 1);
2030
2031 for (i = 0; i <= AvFILLp (av); ++i)
2032 PUSHs (AvARRAY (av)[i]);
2033 }
2034
2035 PUTBACK;
2036 }
2037}
2038
2039static void
2040coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2041{
2042 if (!coro->on_destroy)
2043 coro->on_destroy = newAV ();
2044
2045 av_push (coro->on_destroy, cb);
2046}
2047
2048static void
2049slf_destroy_join (pTHX_ struct CoroSLF *frame)
2050{
2051 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2052}
2053
2054static int
2055slf_check_join (pTHX_ struct CoroSLF *frame)
2056{
2057 struct coro *coro = (struct coro *)frame->data;
2058
2059 if (!coro->status)
2060 return 1;
2061
2062 frame->destroy = 0;
2063
2064 coro_push_av (aTHX_ coro->status, GIMME_V);
2065
2066 SvREFCNT_dec ((SV *)coro->hv);
2067
2068 return 0;
2069}
2070
2071static void
2072slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2073{
2074 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2075
2076 if (items > 1)
2077 croak ("join called with too many arguments");
2078
2079 if (coro->status)
2080 frame->prepare = prepare_nop;
2081 else
2082 {
2083 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2084 frame->prepare = prepare_schedule;
2085 }
2086
2087 frame->check = slf_check_join;
2088 frame->destroy = slf_destroy_join;
2089 frame->data = (void *)coro;
2090 SvREFCNT_inc (coro->hv);
2091}
2092
2093static void
2094coro_call_on_destroy (pTHX_ struct coro *coro)
2095{
2096 AV *od = coro->on_destroy;
2097
2098 if (!od)
2099 return;
2100
2101 while (AvFILLp (od) >= 0)
2102 {
2103 SV *cb = sv_2mortal (av_pop (od));
2104
2105 /* coro hv's (and only hv's at the moment) are supported as well */
2106 if (SvSTATEhv_p (aTHX_ cb))
2107 api_ready (aTHX_ cb);
2108 else
2109 {
2110 dSP; /* don't disturb outer sp */
2111 PUSHMARK (SP);
2112
2113 if (coro->status)
2114 {
2115 PUTBACK;
2116 coro_push_av (aTHX_ coro->status, G_ARRAY);
2117 SPAGAIN;
2118 }
2119
2120 PUTBACK;
2121 call_sv (cb, G_VOID | G_DISCARD);
2122 }
2123 }
2124}
2125
2126static void
2127coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2128{
2129 AV *av;
2130
2131 if (coro->status)
2132 {
2133 av = coro->status;
2134 av_clear (av);
2135 }
2136 else
2137 av = coro->status = newAV ();
2138
2139 /* items are actually not so common, so optimise for this case */
2140 if (items)
2141 {
2142 int i;
2143
2144 av_extend (av, items - 1);
2145
2146 for (i = 0; i < items; ++i)
2147 av_push (av, SvREFCNT_inc_NN (arg [i]));
2148 }
2149}
2150
2151static void
2152slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2153{
2154 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2155 api_ready (aTHX_ sv_manager);
2156
2157 frame->prepare = prepare_schedule;
2158 frame->check = slf_check_repeat;
2159
2160 /* as a minor optimisation, we could unwind all stacks here */
2161 /* but that puts extra pressure on pp_slf, and is not worth much */
2162 /*coro_unwind_stacks (aTHX);*/
2163}
2164
2165static void
2166slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2167{
2168 HV *coro_hv = (HV *)SvRV (coro_current);
2169
2170 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2171 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2172}
2173
2174static void
2175slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2176{
2177 HV *coro_hv;
2178 struct coro *coro;
2179
2180 if (items <= 0)
2181 croak ("Coro::cancel called without coro object,");
2182
2183 coro = SvSTATE (arg [0]);
2184 coro_hv = coro->hv;
2185
2186 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2187
2188 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2189 {
2190 /* coro currently busy cancelling something, so just notify it */
2191 coro->slf_frame.data = (void *)coro;
2192
2193 frame->prepare = prepare_nop;
2194 frame->check = slf_check_nop;
2195 }
2196 else if (coro_hv == (HV *)SvRV (coro_current))
2197 {
2198 /* cancelling the current coro is allowed, and equals terminate */
2199 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2200 }
2201 else
2202 {
2203 struct coro *self = SvSTATE_current;
2204
2205 /* otherwise we cancel directly, purely for speed reasons
2206 * unfortunately, this requires some magic trickery, as
2207 * somebody else could cancel us, so we have to fight the cancellation.
2208 * this is ugly, and hopefully fully worth the extra speed.
2209 * besides, I can't get the slow-but-safe version working...
2210 */
2211 slf_frame.data = 0;
2212 self->flags |= CF_NOCANCEL;
2213 coro_state_destroy (aTHX_ coro);
2214 self->flags &= ~CF_NOCANCEL;
2215
2216 if (slf_frame.data)
2217 {
2218 /* while we were busy we have been cancelled, so terminate */
2219 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2220 }
2221 else
2222 {
2223 frame->prepare = prepare_nop;
2224 frame->check = slf_check_nop;
2225 }
2226 }
2227}
2228
2229static int
2230slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2231{
2232 frame->prepare = 0;
2233 coro_unwind_stacks (aTHX);
2234
2235 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2236
2237 return 1;
2238}
2239
2240static int
2241safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2242{
2243 if (coro->cctx)
2244 croak ("coro inside C callback, unable to cancel at this time, caught");
2245
2246 if (coro->flags & CF_NEW)
2247 {
2248 coro_set_status (aTHX_ coro, arg, items);
2249 coro_state_destroy (aTHX_ coro);
2250 }
2251 else
2252 {
2253 if (!coro->slf_frame.prepare)
2254 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2255
2256 slf_destroy (aTHX_ coro);
2257
2258 coro_set_status (aTHX_ coro, arg, items);
2259 coro->slf_frame.prepare = prepare_nop;
2260 coro->slf_frame.check = slf_check_safe_cancel;
2261
2262 api_ready (aTHX_ (SV *)coro->hv);
2263 }
2264
2265 return 1;
2266}
2267
2268/*****************************************************************************/
2269/* async pool handler */
2270
2271static int
2272slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2273{
2274 HV *hv = (HV *)SvRV (coro_current);
2275 struct coro *coro = (struct coro *)frame->data;
2276
2277 if (!coro->invoke_cb)
2278 return 1; /* loop till we have invoke */
2279 else
2280 {
2281 hv_store (hv, "desc", sizeof ("desc") - 1,
2282 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2283
2284 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2285
2286 {
2287 dSP;
2288 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2289 PUTBACK;
2290 }
2291
2292 SvREFCNT_dec (GvAV (PL_defgv));
2293 GvAV (PL_defgv) = coro->invoke_av;
2294 coro->invoke_av = 0;
2295
2296 return 0;
2297 }
2298}
2299
2300static void
2301slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2302{
2303 HV *hv = (HV *)SvRV (coro_current);
2304 struct coro *coro = SvSTATE_hv ((SV *)hv);
2305
2306 if (ecb_expect_true (coro->saved_deffh))
2307 {
2308 /* subsequent iteration */
2309 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2310 coro->saved_deffh = 0;
2311
2312 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2313 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2314 {
2315 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2316 return;
2317 }
2318 else
2319 {
2320 av_clear (GvAV (PL_defgv));
2321 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2322
2323 coro->prio = 0;
2324
2325 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2326 api_trace (aTHX_ coro_current, 0);
2327
2328 frame->prepare = prepare_schedule;
2329 av_push (av_async_pool, SvREFCNT_inc (hv));
2330 }
2331 }
2332 else
2333 {
2334 /* first iteration, simply fall through */
2335 frame->prepare = prepare_nop;
2336 }
2337
2338 frame->check = slf_check_pool_handler;
2339 frame->data = (void *)coro;
2340}
2341
2342/*****************************************************************************/
2343/* rouse callback */
2344
2345#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2346
2347static void
2348coro_rouse_callback (pTHX_ CV *cv)
2349{
2350 dXSARGS;
2351 SV *data = (SV *)S_GENSUB_ARG;
2352
2353 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2354 {
2355 /* first call, set args */
2356 SV *coro = SvRV (data);
2357 AV *av = newAV ();
2358
2359 SvRV_set (data, (SV *)av);
2360
2361 /* better take a full copy of the arguments */
2362 while (items--)
2363 av_store (av, items, newSVsv (ST (items)));
2364
2365 api_ready (aTHX_ coro);
2366 SvREFCNT_dec (coro);
2367 }
2368
2369 XSRETURN_EMPTY;
2370}
2371
2372static int
2373slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2374{
2375 SV *data = (SV *)frame->data;
2376
2377 if (CORO_THROW)
2378 return 0;
2379
2380 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2381 return 1;
2382
2383 /* now push all results on the stack */
2384 {
2385 dSP;
2386 AV *av = (AV *)SvRV (data);
2387 int i;
2388
2389 EXTEND (SP, AvFILLp (av) + 1);
2390 for (i = 0; i <= AvFILLp (av); ++i)
2391 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2392
2393 /* we have stolen the elements, so set length to zero and free */
2394 AvFILLp (av) = -1;
2395 av_undef (av);
2396
2397 PUTBACK;
2398 }
2399
2400 return 0;
2401}
2402
2403static void
2404slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2405{
2406 SV *cb;
2407
2408 if (items)
2409 cb = arg [0];
2410 else
2411 {
2412 struct coro *coro = SvSTATE_current;
2413
2414 if (!coro->rouse_cb)
2415 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2416
2417 cb = sv_2mortal (coro->rouse_cb);
2418 coro->rouse_cb = 0;
2419 }
2420
2421 if (!SvROK (cb)
2422 || SvTYPE (SvRV (cb)) != SVt_PVCV
2423 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2424 croak ("Coro::rouse_wait called with illegal callback argument,");
2425
2426 {
2427 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2428 SV *data = (SV *)S_GENSUB_ARG;
2429
2430 frame->data = (void *)data;
2431 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2432 frame->check = slf_check_rouse_wait;
2433 }
2434}
2435
2436static SV *
2437coro_new_rouse_cb (pTHX)
2438{
2439 HV *hv = (HV *)SvRV (coro_current);
2440 struct coro *coro = SvSTATE_hv (hv);
2441 SV *data = newRV_inc ((SV *)hv);
2442 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2443
2444 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2445 SvREFCNT_dec (data); /* magicext increases the refcount */
2446
2447 SvREFCNT_dec (coro->rouse_cb);
2448 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2449
2450 return cb;
2451}
2452
2453/*****************************************************************************/
2454/* schedule-like-function opcode (SLF) */
2455
2456static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2457static const CV *slf_cv;
2458static SV **slf_argv;
2459static int slf_argc, slf_arga; /* count, allocated */
2460static I32 slf_ax; /* top of stack, for restore */
2461
2462/* this restores the stack in the case we patched the entersub, to */
2463/* recreate the stack frame as perl will on following calls */
2464/* since entersub cleared the stack */
2465static OP *
2466pp_restore (pTHX)
2467{
2468 int i;
2469 SV **SP = PL_stack_base + slf_ax;
2470
2471 PUSHMARK (SP);
2472
2473 EXTEND (SP, slf_argc + 1);
2474
2475 for (i = 0; i < slf_argc; ++i)
2476 PUSHs (sv_2mortal (slf_argv [i]));
2477
2478 PUSHs ((SV *)CvGV (slf_cv));
2479
2480 RETURNOP (slf_restore.op_first);
2481}
2482
2483static void
2484slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2485{
2486 SV **arg = (SV **)slf_frame.data;
2487
2488 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2489}
2490
2491static void
2492slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2493{
2494 if (items != 2)
2495 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2496
2497 frame->prepare = slf_prepare_transfer;
2498 frame->check = slf_check_nop;
2499 frame->data = (void *)arg; /* let's hope it will stay valid */
2500}
2501
2502static void
2503slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2504{
2505 frame->prepare = prepare_schedule;
2506 frame->check = slf_check_nop;
2507}
2508
2509static void
2510slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2511{
2512 struct coro *next = (struct coro *)slf_frame.data;
2513
2514 SvREFCNT_inc_NN (next->hv);
2515 prepare_schedule_to (aTHX_ ta, next);
2516}
2517
2518static void
2519slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2520{
2521 if (!items)
2522 croak ("Coro::schedule_to expects a coroutine argument, caught");
2523
2524 frame->data = (void *)SvSTATE (arg [0]);
2525 frame->prepare = slf_prepare_schedule_to;
2526 frame->check = slf_check_nop;
2527}
2528
2529static void
2530slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2531{
2532 api_ready (aTHX_ SvRV (coro_current));
2533
2534 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2535}
2536
2537static void
2538slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2539{
2540 frame->prepare = prepare_cede;
2541 frame->check = slf_check_nop;
2542}
2543
2544static void
2545slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2546{
2547 frame->prepare = prepare_cede_notself;
2548 frame->check = slf_check_nop;
2549}
2550
2551/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2552static void
2553slf_destroy (pTHX_ struct coro *coro)
2554{
2555 /* this callback is reserved for slf functions needing to do cleanup */
2556 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2557 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2558
2559 /*
2560 * The on_destroy above most likely is from an SLF call.
2561 * Since by definition the SLF call will not finish when we destroy
2562 * the coro, we will have to force-finish it here, otherwise
2563 * cleanup functions cannot call SLF functions.
2564 */
2565 coro->slf_frame.prepare = 0;
2566}
2567
2568/*
2569 * these not obviously related functions are all rolled into one
2570 * function to increase chances that they all will call transfer with the same
2571 * stack offset
2572 * SLF stands for "schedule-like-function".
2573 */
2574static OP *
2575pp_slf (pTHX)
2576{
2577 I32 checkmark; /* mark SP to see how many elements check has pushed */
2578
2579 /* set up the slf frame, unless it has already been set-up */
2580 /* the latter happens when a new coro has been started */
2581 /* or when a new cctx was attached to an existing coroutine */
2582 if (ecb_expect_true (!slf_frame.prepare))
2583 {
2584 /* first iteration */
2585 dSP;
2586 SV **arg = PL_stack_base + TOPMARK + 1;
2587 int items = SP - arg; /* args without function object */
2588 SV *gv = *sp;
2589
2590 /* do a quick consistency check on the "function" object, and if it isn't */
2591 /* for us, divert to the real entersub */
2592 if (SvTYPE (gv) != SVt_PVGV
2593 || !GvCV (gv)
2594 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2595 return PL_ppaddr[OP_ENTERSUB](aTHX);
2596
2597 if (!(PL_op->op_flags & OPf_STACKED))
2598 {
2599 /* ampersand-form of call, use @_ instead of stack */
2600 AV *av = GvAV (PL_defgv);
2601 arg = AvARRAY (av);
2602 items = AvFILLp (av) + 1;
2603 }
2604
2605 /* now call the init function, which needs to set up slf_frame */
2606 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2607 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2608
2609 /* pop args */
2610 SP = PL_stack_base + POPMARK;
2611
2612 PUTBACK;
2613 }
2614
2615 /* now that we have a slf_frame, interpret it! */
2616 /* we use a callback system not to make the code needlessly */
2617 /* complicated, but so we can run multiple perl coros from one cctx */
2618
2619 do
2620 {
2621 struct coro_transfer_args ta;
2622
2623 slf_frame.prepare (aTHX_ &ta);
2624 TRANSFER (ta, 0);
2625
2626 checkmark = PL_stack_sp - PL_stack_base;
2627 }
2628 while (slf_frame.check (aTHX_ &slf_frame));
2629
2630 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2631
2632 /* exception handling */
2633 if (ecb_expect_false (CORO_THROW))
2634 {
2635 SV *exception = sv_2mortal (CORO_THROW);
2636
2637 CORO_THROW = 0;
2638 sv_setsv (ERRSV, exception);
2639 croak (0);
2640 }
2641
2642 /* return value handling - mostly like entersub */
2643 /* make sure we put something on the stack in scalar context */
2644 if (GIMME_V == G_SCALAR
2645 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2646 {
2647 dSP;
2648 SV **bot = PL_stack_base + checkmark;
2649
2650 if (sp == bot) /* too few, push undef */
2651 bot [1] = &PL_sv_undef;
2652 else /* too many, take last one */
2653 bot [1] = *sp;
2654
2655 SP = bot + 1;
2656
2657 PUTBACK;
2658 }
2659
2660 return NORMAL;
2661}
2662
2663static void
2664api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2665{
2666 int i;
2667 SV **arg = PL_stack_base + ax;
2668 int items = PL_stack_sp - arg + 1;
2669
2670 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2671
2672 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2673 && PL_op->op_ppaddr != pp_slf)
2674 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2675
2676 CvFLAGS (cv) |= CVf_SLF;
2677 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2678 slf_cv = cv;
2679
2680 /* we patch the op, and then re-run the whole call */
2681 /* we have to put the same argument on the stack for this to work */
2682 /* and this will be done by pp_restore */
2683 slf_restore.op_next = (OP *)&slf_restore;
2684 slf_restore.op_type = OP_CUSTOM;
2685 slf_restore.op_ppaddr = pp_restore;
2686 slf_restore.op_first = PL_op;
2687
2688 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2689
2690 if (PL_op->op_flags & OPf_STACKED)
2691 {
2692 if (items > slf_arga)
2693 {
2694 slf_arga = items;
2695 Safefree (slf_argv);
2696 New (0, slf_argv, slf_arga, SV *);
2697 }
2698
2699 slf_argc = items;
2700
2701 for (i = 0; i < items; ++i)
2702 slf_argv [i] = SvREFCNT_inc (arg [i]);
2703 }
2704 else
2705 slf_argc = 0;
2706
2707 PL_op->op_ppaddr = pp_slf;
2708 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2709
2710 PL_op = (OP *)&slf_restore;
2711}
2712
2713/*****************************************************************************/
2714/* dynamic wind */
2715
2716static void
2717on_enterleave_call (pTHX_ SV *cb)
2718{
2719 dSP;
2720
2721 PUSHSTACK;
2722
2723 PUSHMARK (SP);
2724 PUTBACK;
2725 call_sv (cb, G_VOID | G_DISCARD);
2726 SPAGAIN;
2727
2728 POPSTACK;
2729}
2730
2731static SV *
2732coro_avp_pop_and_free (pTHX_ AV **avp)
2733{
2734 AV *av = *avp;
2735 SV *res = av_pop (av);
2736
2737 if (AvFILLp (av) < 0)
2738 {
2739 *avp = 0;
2740 SvREFCNT_dec (av);
2741 }
2742
2743 return res;
2744}
2745
2746static void
2747coro_pop_on_enter (pTHX_ void *coro)
2748{
2749 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2750 SvREFCNT_dec (cb);
2751}
2752
2753static void
2754coro_pop_on_leave (pTHX_ void *coro)
2755{
2756 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2757 on_enterleave_call (aTHX_ sv_2mortal (cb));
2758}
2759
1725/*****************************************************************************/ 2760/*****************************************************************************/
1726/* PerlIO::cede */ 2761/* PerlIO::cede */
1727 2762
1728typedef struct 2763typedef struct
1729{ 2764{
1730 PerlIOBuf base; 2765 PerlIOBuf base;
1731 NV next, every; 2766 NV next, every;
1732} PerlIOCede; 2767} PerlIOCede;
1733 2768
1734static IV 2769static IV ecb_cold
1735PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2770PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1736{ 2771{
1737 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2772 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1738 2773
1739 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2774 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1740 self->next = nvtime () + self->every; 2775 self->next = nvtime () + self->every;
1741 2776
1742 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2777 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1743} 2778}
1744 2779
1745static SV * 2780static SV * ecb_cold
1746PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2781PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1747{ 2782{
1748 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1749 2784
1750 return newSVnv (self->every); 2785 return newSVnv (self->every);
… …
1796 PerlIOBuf_get_cnt, 2831 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt, 2832 PerlIOBuf_set_ptrcnt,
1798}; 2833};
1799 2834
1800/*****************************************************************************/ 2835/*****************************************************************************/
2836/* Coro::Semaphore & Coro::Signal */
1801 2837
1802static const CV *slf_cv; /* for quick consistency check */
1803
1804static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1805static SV *slf_arg0;
1806static SV *slf_arg1;
1807static SV *slf_arg2;
1808
1809/* this restores the stack in the case we patched the entersub, to */
1810/* recreate the stack frame as perl will on following calls */
1811/* since entersub cleared the stack */
1812static OP * 2838static SV *
1813pp_restore (pTHX) 2839coro_waitarray_new (pTHX_ int count)
1814{ 2840{
1815 dSP; 2841 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2842 AV *av = newAV ();
2843 SV **ary;
1816 2844
1817 PUSHMARK (SP); 2845 /* unfortunately, building manually saves memory */
2846 Newx (ary, 2, SV *);
2847 AvALLOC (av) = ary;
2848#if PERL_VERSION_ATLEAST (5,10,0)
2849 AvARRAY (av) = ary;
2850#else
2851 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2852 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2853 SvPVX ((SV *)av) = (char *)ary;
2854#endif
2855 AvMAX (av) = 1;
2856 AvFILLp (av) = 0;
2857 ary [0] = newSViv (count);
1818 2858
1819 EXTEND (SP, 3); 2859 return newRV_noinc ((SV *)av);
1820 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1821 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1822 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1823 PUSHs ((SV *)CvGV (slf_cv));
1824
1825 RETURNOP (slf_restore.op_first);
1826} 2860}
1827 2861
1828static void 2862/* semaphore */
1829slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1830{
1831 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1832}
1833 2863
1834static void 2864static void
1835slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2865coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1836{ 2866{
1837 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2867 SV *count_sv = AvARRAY (av)[0];
2868 IV count = SvIVX (count_sv);
1838 2869
1839 frame->prepare = slf_prepare_set_stacklevel; 2870 count += adjust;
1840 frame->check = slf_check_nop; 2871 SvIVX (count_sv) = count;
1841 frame->data = (void *)SvIV (arg [0]);
1842}
1843 2872
1844static void 2873 /* now wake up as many waiters as are expected to lock */
1845slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2874 while (count > 0 && AvFILLp (av) > 0)
1846{
1847 SV **arg = (SV **)slf_frame.data;
1848
1849 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1850}
1851
1852static void
1853slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1854{
1855 if (items != 2)
1856 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1857
1858 frame->prepare = slf_prepare_transfer;
1859 frame->check = slf_check_nop;
1860 frame->data = (void *)arg; /* let's hope it will stay valid */
1861}
1862
1863static void
1864slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1865{
1866 frame->prepare = prepare_schedule;
1867 frame->check = slf_check_nop;
1868}
1869
1870static void
1871slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 frame->prepare = prepare_cede;
1874 frame->check = slf_check_nop;
1875}
1876
1877static void
1878slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1879{
1880 frame->prepare = prepare_cede_notself;
1881 frame->check = slf_check_nop;
1882}
1883
1884/* we hijack an hopefully unused CV flag for our purposes */
1885#define CVf_SLF 0x4000
1886
1887/*
1888 * these not obviously related functions are all rolled into one
1889 * function to increase chances that they all will call transfer with the same
1890 * stack offset
1891 * SLF stands for "schedule-like-function".
1892 */
1893static OP *
1894pp_slf (pTHX)
1895{
1896 I32 checkmark; /* mark SP to see how many elements check has pushed */
1897
1898 /* set up the slf frame, unless it has already been set-up */
1899 /* the latter happens when a new coro has been started */
1900 /* or when a new cctx was attached to an existing coroutine */
1901 if (expect_true (!slf_frame.prepare))
1902 { 2875 {
1903 /* first iteration */ 2876 SV *cb;
1904 dSP;
1905 SV **arg = PL_stack_base + TOPMARK + 1;
1906 int items = SP - arg; /* args without function object */
1907 SV *gv = *sp;
1908 2877
1909 /* do a quick consistency check on the "function" object, and if it isn't */ 2878 /* swap first two elements so we can shift a waiter */
1910 /* for us, divert to the real entersub */ 2879 AvARRAY (av)[0] = AvARRAY (av)[1];
1911 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2880 AvARRAY (av)[1] = count_sv;
1912 return PL_ppaddr[OP_ENTERSUB](aTHX); 2881 cb = av_shift (av);
1913 2882
1914 /* pop args */ 2883 if (SvOBJECT (cb))
1915 SP = PL_stack_base + POPMARK;
1916
1917 if (!(PL_op->op_flags & OPf_STACKED))
1918 { 2884 {
1919 /* ampersand-form of call, use @_ instead of stack */ 2885 api_ready (aTHX_ cb);
1920 AV *av = GvAV (PL_defgv); 2886 --count;
1921 arg = AvARRAY (av);
1922 items = AvFILLp (av) + 1;
1923 } 2887 }
1924 2888 else if (SvTYPE (cb) == SVt_PVCV)
1925 PUTBACK;
1926
1927 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1928 }
1929
1930 /* now interpret the slf_frame */
1931 /* we use a callback system not to make the code needlessly */
1932 /* complicated, but so we can run multiple perl coros from one cctx */
1933
1934 do
1935 {
1936 struct coro_transfer_args ta;
1937
1938 slf_frame.prepare (aTHX_ &ta);
1939 TRANSFER (ta, 0);
1940
1941 checkmark = PL_stack_sp - PL_stack_base;
1942 }
1943 while (slf_frame.check (aTHX_ &slf_frame));
1944
1945 {
1946 dSP;
1947 SV **bot = PL_stack_base + checkmark;
1948 int gimme = GIMME_V;
1949
1950 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1951
1952 /* make sure we put something on the stack in scalar context */
1953 if (gimme == G_SCALAR)
1954 { 2889 {
1955 if (sp == bot) 2890 dSP;
1956 XPUSHs (&PL_sv_undef); 2891 PUSHMARK (SP);
1957 2892 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1958 SP = bot + 1; 2893 PUTBACK;
2894 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1959 } 2895 }
1960 2896
1961 PUTBACK; 2897 SvREFCNT_dec (cb);
1962 } 2898 }
1963
1964 return NORMAL;
1965} 2899}
1966 2900
1967static void 2901static void
1968api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2902coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
1969{ 2903{
1970 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2904 /* call $sem->adjust (0) to possibly wake up some other waiters */
1971 2905 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
1972 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1973 && PL_op->op_ppaddr != pp_slf)
1974 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1975
1976 if (items > 3)
1977 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_NULL;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1992 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1993 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1994
1995 PL_op->op_ppaddr = pp_slf;
1996
1997 PL_op = (OP *)&slf_restore;
1998} 2906}
1999
2000/*****************************************************************************/
2001 2907
2002static int 2908static int
2003slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2909slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2004{ 2910{
2005 AV *av = (AV *)frame->data; 2911 AV *av = (AV *)frame->data;
2006 SV *count_sv = AvARRAY (av)[0]; 2912 SV *count_sv = AvARRAY (av)[0];
2913 SV *coro_hv = SvRV (coro_current);
2007 2914
2915 /* if we are about to throw, don't actually acquire the lock, just throw */
2916 if (CORO_THROW)
2917 return 0;
2008 if (SvIVX (count_sv) > 0) 2918 else if (SvIVX (count_sv) > 0)
2009 { 2919 {
2920 frame->destroy = 0;
2921
2922 if (acquire)
2010 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2923 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2924 else
2925 coro_semaphore_adjust (aTHX_ av, 0);
2926
2011 return 0; 2927 return 0;
2012 } 2928 }
2013 else 2929 else
2014 { 2930 {
2015 int i; 2931 int i;
2016 /* if we were woken up but can't down, we look through the whole */ 2932 /* if we were woken up but can't down, we look through the whole */
2017 /* waiters list and only add us if we aren't in there already */ 2933 /* waiters list and only add us if we aren't in there already */
2018 /* this avoids some degenerate memory usage cases */ 2934 /* this avoids some degenerate memory usage cases */
2019 2935 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2020 for (i = 1; i <= AvFILLp (av); ++i)
2021 if (AvARRAY (av)[i] == SvRV (coro_current)) 2936 if (AvARRAY (av)[i] == coro_hv)
2022 return 1; 2937 return 1;
2023 2938
2024 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2939 av_push (av, SvREFCNT_inc (coro_hv));
2025 return 1; 2940 return 1;
2026 } 2941 }
2027} 2942}
2028 2943
2029static void 2944static int
2945slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2946{
2947 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2948}
2949
2950static int
2951slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2952{
2953 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2954}
2955
2956static void
2030slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2957slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2031{ 2958{
2032 AV *av = (AV *)SvRV (arg [0]); 2959 AV *av = (AV *)SvRV (arg [0]);
2033 2960
2034 if (SvIVX (AvARRAY (av)[0]) > 0) 2961 if (SvIVX (AvARRAY (av)[0]) > 0)
2035 { 2962 {
… …
2040 { 2967 {
2041 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2968 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2042 2969
2043 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2970 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2044 frame->prepare = prepare_schedule; 2971 frame->prepare = prepare_schedule;
2972 /* to avoid race conditions when a woken-up coro gets terminated */
2973 /* we arrange for a temporary on_destroy that calls adjust (0) */
2974 frame->destroy = coro_semaphore_destroy;
2045 } 2975 }
2976}
2046 2977
2978static void
2979slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2980{
2981 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2047 frame->check = slf_check_semaphore_down; 2982 frame->check = slf_check_semaphore_down;
2983}
2048 2984
2985static void
2986slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2987{
2988 if (items >= 2)
2989 {
2990 /* callback form */
2991 AV *av = (AV *)SvRV (arg [0]);
2992 SV *cb_cv = s_get_cv_croak (arg [1]);
2993
2994 av_push (av, SvREFCNT_inc_NN (cb_cv));
2995
2996 if (SvIVX (AvARRAY (av)[0]) > 0)
2997 coro_semaphore_adjust (aTHX_ av, 0);
2998
2999 frame->prepare = prepare_nop;
3000 frame->check = slf_check_nop;
3001 }
3002 else
3003 {
3004 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3005 frame->check = slf_check_semaphore_wait;
3006 }
3007}
3008
3009/* signal */
3010
3011static void
3012coro_signal_wake (pTHX_ AV *av, int count)
3013{
3014 SvIVX (AvARRAY (av)[0]) = 0;
3015
3016 /* now signal count waiters */
3017 while (count > 0 && AvFILLp (av) > 0)
3018 {
3019 SV *cb;
3020
3021 /* swap first two elements so we can shift a waiter */
3022 cb = AvARRAY (av)[0];
3023 AvARRAY (av)[0] = AvARRAY (av)[1];
3024 AvARRAY (av)[1] = cb;
3025
3026 cb = av_shift (av);
3027
3028 if (SvTYPE (cb) == SVt_PVCV)
3029 {
3030 dSP;
3031 PUSHMARK (SP);
3032 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3033 PUTBACK;
3034 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3035 }
3036 else
3037 {
3038 api_ready (aTHX_ cb);
3039 sv_setiv (cb, 0); /* signal waiter */
3040 }
3041
3042 SvREFCNT_dec (cb);
3043
3044 --count;
3045 }
3046}
3047
3048static int
3049slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3050{
3051 /* if we are about to throw, also stop waiting */
3052 return SvROK ((SV *)frame->data) && !CORO_THROW;
3053}
3054
3055static void
3056slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3057{
3058 AV *av = (AV *)SvRV (arg [0]);
3059
3060 if (items >= 2)
3061 {
3062 SV *cb_cv = s_get_cv_croak (arg [1]);
3063 av_push (av, SvREFCNT_inc_NN (cb_cv));
3064
3065 if (SvIVX (AvARRAY (av)[0]))
3066 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3067
3068 frame->prepare = prepare_nop;
3069 frame->check = slf_check_nop;
3070 }
3071 else if (SvIVX (AvARRAY (av)[0]))
3072 {
3073 SvIVX (AvARRAY (av)[0]) = 0;
3074 frame->prepare = prepare_nop;
3075 frame->check = slf_check_nop;
3076 }
3077 else
3078 {
3079 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3080
3081 av_push (av, waiter);
3082
3083 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3084 frame->prepare = prepare_schedule;
3085 frame->check = slf_check_signal_wait;
3086 }
2049} 3087}
2050 3088
2051/*****************************************************************************/ 3089/*****************************************************************************/
3090/* Coro::AIO */
2052 3091
2053#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3092#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2054 3093
2055/* create a closure from XS, returns a code reference */ 3094/* helper storage struct */
2056/* the arg can be accessed via GENSUB_ARG from the callback */ 3095struct io_state
2057/* the callback must use dXSARGS/XSRETURN */ 3096{
3097 int errorno;
3098 I32 laststype; /* U16 in 5.10.0 */
3099 int laststatval;
3100 Stat_t statcache;
3101};
3102
3103static void
3104coro_aio_callback (pTHX_ CV *cv)
3105{
3106 dXSARGS;
3107 AV *state = (AV *)S_GENSUB_ARG;
3108 SV *coro = av_pop (state);
3109 SV *data_sv = newSV (sizeof (struct io_state));
3110
3111 av_extend (state, items - 1);
3112
3113 sv_upgrade (data_sv, SVt_PV);
3114 SvCUR_set (data_sv, sizeof (struct io_state));
3115 SvPOK_only (data_sv);
3116
3117 {
3118 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3119
3120 data->errorno = errno;
3121 data->laststype = PL_laststype;
3122 data->laststatval = PL_laststatval;
3123 data->statcache = PL_statcache;
3124 }
3125
3126 /* now build the result vector out of all the parameters and the data_sv */
3127 {
3128 int i;
3129
3130 for (i = 0; i < items; ++i)
3131 av_push (state, SvREFCNT_inc_NN (ST (i)));
3132 }
3133
3134 av_push (state, data_sv);
3135
3136 api_ready (aTHX_ coro);
3137 SvREFCNT_dec (coro);
3138 SvREFCNT_dec ((AV *)state);
3139}
3140
3141static int
3142slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3143{
3144 AV *state = (AV *)frame->data;
3145
3146 /* if we are about to throw, return early */
3147 /* this does not cancel the aio request, but at least */
3148 /* it quickly returns */
3149 if (CORO_THROW)
3150 return 0;
3151
3152 /* one element that is an RV? repeat! */
3153 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3154 return 1;
3155
3156 /* restore status */
3157 {
3158 SV *data_sv = av_pop (state);
3159 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3160
3161 errno = data->errorno;
3162 PL_laststype = data->laststype;
3163 PL_laststatval = data->laststatval;
3164 PL_statcache = data->statcache;
3165
3166 SvREFCNT_dec (data_sv);
3167 }
3168
3169 /* push result values */
3170 {
3171 dSP;
3172 int i;
3173
3174 EXTEND (SP, AvFILLp (state) + 1);
3175 for (i = 0; i <= AvFILLp (state); ++i)
3176 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3177
3178 PUTBACK;
3179 }
3180
3181 return 0;
3182}
3183
3184static void
3185slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3186{
3187 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3188 SV *coro_hv = SvRV (coro_current);
3189 struct coro *coro = SvSTATE_hv (coro_hv);
3190
3191 /* put our coroutine id on the state arg */
3192 av_push (state, SvREFCNT_inc_NN (coro_hv));
3193
3194 /* first see whether we have a non-zero priority and set it as AIO prio */
3195 if (coro->prio)
3196 {
3197 dSP;
3198
3199 static SV *prio_cv;
3200 static SV *prio_sv;
3201
3202 if (ecb_expect_false (!prio_cv))
3203 {
3204 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3205 prio_sv = newSViv (0);
3206 }
3207
3208 PUSHMARK (SP);
3209 sv_setiv (prio_sv, coro->prio);
3210 XPUSHs (prio_sv);
3211
3212 PUTBACK;
3213 call_sv (prio_cv, G_VOID | G_DISCARD);
3214 }
3215
3216 /* now call the original request */
3217 {
3218 dSP;
3219 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3220 int i;
3221
3222 PUSHMARK (SP);
3223
3224 /* first push all args to the stack */
3225 EXTEND (SP, items + 1);
3226
3227 for (i = 0; i < items; ++i)
3228 PUSHs (arg [i]);
3229
3230 /* now push the callback closure */
3231 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3232
3233 /* now call the AIO function - we assume our request is uncancelable */
3234 PUTBACK;
3235 call_sv ((SV *)req, G_VOID | G_DISCARD);
3236 }
3237
3238 /* now that the request is going, we loop till we have a result */
3239 frame->data = (void *)state;
3240 frame->prepare = prepare_schedule;
3241 frame->check = slf_check_aio_req;
3242}
3243
3244static void
3245coro_aio_req_xs (pTHX_ CV *cv)
3246{
3247 dXSARGS;
3248
3249 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3250
3251 XSRETURN_EMPTY;
3252}
3253
3254/*****************************************************************************/
3255
3256#if CORO_CLONE
3257# include "clone.c"
3258#endif
3259
3260/*****************************************************************************/
3261
2058static SV * 3262static SV *
2059gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3263coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2060{ 3264{
2061 CV *cv = (CV *)NEWSV (0, 0); 3265 SV *coro_sv;
3266 struct coro *coro;
3267 MAGIC *mg;
3268 HV *hv;
3269 SV *cb;
3270 int i;
2062 3271
2063 sv_upgrade ((SV *)cv, SVt_PVCV); 3272 if (argc > 0)
3273 {
3274 cb = s_get_cv_croak (argv [0]);
2064 3275
2065 CvANON_on (cv); 3276 if (!is_coro)
2066 CvISXSUB_on (cv); 3277 {
2067 CvXSUB (cv) = xsub; 3278 if (CvISXSUB (cb))
2068 GENSUB_ARG = arg; 3279 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2069 3280
2070 return newRV_noinc ((SV *)cv); 3281 if (!CvROOT (cb))
2071} 3282 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3283 }
3284 }
2072 3285
2073/*****************************************************************************/ 3286 Newz (0, coro, 1, struct coro);
3287 coro->args = newAV ();
3288 coro->flags = CF_NEW;
3289
3290 if (coro_first) coro_first->prev = coro;
3291 coro->next = coro_first;
3292 coro_first = coro;
3293
3294 coro->hv = hv = newHV ();
3295 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3296 mg->mg_flags |= MGf_DUP;
3297 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3298
3299 if (argc > 0)
3300 {
3301 av_extend (coro->args, argc + is_coro - 1);
3302
3303 if (is_coro)
3304 {
3305 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3306 cb = (SV *)cv_coro_run;
3307 }
3308
3309 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3310
3311 for (i = 1; i < argc; i++)
3312 av_push (coro->args, newSVsv (argv [i]));
3313 }
3314
3315 return coro_sv;
3316}
3317
3318#ifndef __cplusplus
3319ecb_cold XS(boot_Coro__State);
3320#endif
3321
3322#if CORO_JIT
3323
3324static void ecb_noinline ecb_cold
3325pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3326{
3327 dSP;
3328 AV *av = newAV ();
3329
3330 av_store (av, 3, newSVuv (d));
3331 av_store (av, 2, newSVuv (c));
3332 av_store (av, 1, newSVuv (b));
3333 av_store (av, 0, newSVuv (a));
3334
3335 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3336
3337 PUTBACK;
3338}
3339
3340static void ecb_noinline ecb_cold
3341jit_init (pTHX)
3342{
3343 dSP;
3344 SV *load, *save;
3345 char *map_base;
3346 char *load_ptr, *save_ptr;
3347 STRLEN load_len, save_len, map_len;
3348 int count;
3349
3350 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3351
3352 PUSHMARK (SP);
3353 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3354 #include "state.h"
3355 count = call_pv ("Coro::State::_jit", G_ARRAY);
3356 SPAGAIN;
3357
3358 save = POPs; save_ptr = SvPVbyte (save, save_len);
3359 load = POPs; load_ptr = SvPVbyte (load, load_len);
3360
3361 map_len = load_len + save_len + 16;
3362
3363 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3364
3365 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3366
3367 load_perl_slots = (load_save_perl_slots_type)map_base;
3368 memcpy (map_base, load_ptr, load_len);
3369
3370 map_base += (load_len + 15) & ~15;
3371
3372 save_perl_slots = (load_save_perl_slots_type)map_base;
3373 memcpy (map_base, save_ptr, save_len);
3374
3375 /* we are good citizens and try to make the page read-only, so the evil evil */
3376 /* hackers might have it a bit more difficult */
3377 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3378
3379 PUTBACK;
3380 eval_pv ("undef &Coro::State::_jit", 1);
3381}
3382
3383#endif
2074 3384
2075MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3385MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2076 3386
2077PROTOTYPES: DISABLE 3387PROTOTYPES: DISABLE
2078 3388
2079BOOT: 3389BOOT:
2080{ 3390{
2081#ifdef USE_ITHREADS 3391#ifdef USE_ITHREADS
2082 MUTEX_INIT (&coro_lock);
2083# if CORO_PTHREAD 3392# if CORO_PTHREAD
2084 coro_thx = PERL_GET_CONTEXT; 3393 coro_thx = PERL_GET_CONTEXT;
2085# endif 3394# endif
2086#endif 3395#endif
2087 BOOT_PAGESIZE; 3396 /* perl defines these to check for existance first, but why it doesn't */
3397 /* just create them one at init time is not clear to me, except for */
3398 /* programs trying to delete them, but... */
3399 /* anyway, we declare this as invalid and make sure they are initialised here */
3400 DEFSV;
3401 ERRSV;
3402
3403 cctx_current = cctx_new_empty ();
2088 3404
2089 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3405 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2090 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3406 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2091 3407
2092 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3408 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2107 main_mainstack = PL_mainstack; 3423 main_mainstack = PL_mainstack;
2108 main_top_env = PL_top_env; 3424 main_top_env = PL_top_env;
2109 3425
2110 while (main_top_env->je_prev) 3426 while (main_top_env->je_prev)
2111 main_top_env = main_top_env->je_prev; 3427 main_top_env = main_top_env->je_prev;
3428
3429 {
3430 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3431
3432 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3433 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3434
3435 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3436 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3437 }
2112 3438
2113 coroapi.ver = CORO_API_VERSION; 3439 coroapi.ver = CORO_API_VERSION;
2114 coroapi.rev = CORO_API_REVISION; 3440 coroapi.rev = CORO_API_REVISION;
2115 3441
2116 coroapi.transfer = api_transfer; 3442 coroapi.transfer = api_transfer;
… …
2120 coroapi.prepare_nop = prepare_nop; 3446 coroapi.prepare_nop = prepare_nop;
2121 coroapi.prepare_schedule = prepare_schedule; 3447 coroapi.prepare_schedule = prepare_schedule;
2122 coroapi.prepare_cede = prepare_cede; 3448 coroapi.prepare_cede = prepare_cede;
2123 coroapi.prepare_cede_notself = prepare_cede_notself; 3449 coroapi.prepare_cede_notself = prepare_cede_notself;
2124 3450
2125 { 3451 time_init (aTHX);
2126 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2127 3452
2128 if (!svp) croak ("Time::HiRes is required");
2129 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2130
2131 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2132 }
2133
2134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3453 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3454#if CORO_JIT
3455 PUTBACK;
3456 jit_init (aTHX);
3457 SPAGAIN;
3458#endif
2135} 3459}
2136 3460
2137SV * 3461SV *
2138new (char *klass, ...) 3462new (SV *klass, ...)
3463 ALIAS:
3464 Coro::new = 1
2139 CODE: 3465 CODE:
2140{ 3466 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2141 struct coro *coro; 3467 OUTPUT:
2142 MAGIC *mg;
2143 HV *hv;
2144 int i;
2145
2146 Newz (0, coro, 1, struct coro);
2147 coro->args = newAV ();
2148 coro->flags = CF_NEW;
2149
2150 if (coro_first) coro_first->prev = coro;
2151 coro->next = coro_first;
2152 coro_first = coro;
2153
2154 coro->hv = hv = newHV ();
2155 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2156 mg->mg_flags |= MGf_DUP;
2157 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2158
2159 av_extend (coro->args, items - 1);
2160 for (i = 1; i < items; i++)
2161 av_push (coro->args, newSVsv (ST (i)));
2162}
2163 OUTPUT:
2164 RETVAL 3468 RETVAL
2165
2166void
2167_set_stacklevel (...)
2168 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2170 3469
2171void 3470void
2172transfer (...) 3471transfer (...)
2173 PROTOTYPE: $$ 3472 PROTOTYPE: $$
2174 CODE: 3473 CODE:
2175 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3474 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2176
2177bool
2178_destroy (SV *coro_sv)
2179 CODE:
2180 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2181 OUTPUT:
2182 RETVAL
2183 3475
2184void 3476void
2185_exit (int code) 3477_exit (int code)
2186 PROTOTYPE: $ 3478 PROTOTYPE: $
2187 CODE: 3479 CODE:
2188 _exit (code); 3480 _exit (code);
3481
3482SV *
3483clone (Coro::State coro)
3484 CODE:
3485{
3486#if CORO_CLONE
3487 struct coro *ncoro = coro_clone (aTHX_ coro);
3488 MAGIC *mg;
3489 /* TODO: too much duplication */
3490 ncoro->hv = newHV ();
3491 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3492 mg->mg_flags |= MGf_DUP;
3493 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3494#else
3495 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3496#endif
3497}
3498 OUTPUT:
3499 RETVAL
2189 3500
2190int 3501int
2191cctx_stacksize (int new_stacksize = 0) 3502cctx_stacksize (int new_stacksize = 0)
2192 PROTOTYPE: ;$ 3503 PROTOTYPE: ;$
2193 CODE: 3504 CODE:
… …
2229void 3540void
2230list () 3541list ()
2231 PROTOTYPE: 3542 PROTOTYPE:
2232 PPCODE: 3543 PPCODE:
2233{ 3544{
2234 struct coro *coro; 3545 struct coro *coro;
2235 for (coro = coro_first; coro; coro = coro->next) 3546 for (coro = coro_first; coro; coro = coro->next)
2236 if (coro->hv) 3547 if (coro->hv)
2237 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3548 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2238} 3549}
2239 3550
… …
2243 eval = 1 3554 eval = 1
2244 CODE: 3555 CODE:
2245{ 3556{
2246 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3557 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2247 { 3558 {
2248 struct coro temp; 3559 struct coro *current = SvSTATE_current;
3560 struct CoroSLF slf_save;
2249 3561
2250 if (!(coro->flags & CF_RUNNING)) 3562 if (current != coro)
2251 { 3563 {
2252 PUTBACK; 3564 PUTBACK;
2253 save_perl (aTHX_ &temp); 3565 save_perl (aTHX_ current);
2254 load_perl (aTHX_ coro); 3566 load_perl (aTHX_ coro);
3567 /* the coro is most likely in an active SLF call.
3568 * while not strictly required (the code we execute is
3569 * not allowed to call any SLF functions), it's cleaner
3570 * to reinitialise the slf_frame and restore it later.
3571 * This might one day allow us to actually do SLF calls
3572 * from code executed here.
3573 */
3574 slf_save = slf_frame;
3575 slf_frame.prepare = 0;
3576 SPAGAIN;
2255 } 3577 }
2256 3578
2257 {
2258 dSP;
2259 ENTER;
2260 SAVETMPS;
2261 PUTBACK;
2262 PUSHSTACK; 3579 PUSHSTACK;
3580
2263 PUSHMARK (SP); 3581 PUSHMARK (SP);
3582 PUTBACK;
2264 3583
2265 if (ix) 3584 if (ix)
2266 eval_sv (coderef, 0); 3585 eval_sv (coderef, 0);
2267 else 3586 else
2268 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3587 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2269 3588
2270 POPSTACK; 3589 POPSTACK;
2271 SPAGAIN; 3590 SPAGAIN;
2272 FREETMPS;
2273 LEAVE;
2274 PUTBACK;
2275 }
2276 3591
2277 if (!(coro->flags & CF_RUNNING)) 3592 if (current != coro)
2278 { 3593 {
3594 PUTBACK;
3595 slf_frame = slf_save;
2279 save_perl (aTHX_ coro); 3596 save_perl (aTHX_ coro);
2280 load_perl (aTHX_ &temp); 3597 load_perl (aTHX_ current);
2281 SPAGAIN; 3598 SPAGAIN;
2282 } 3599 }
2283 } 3600 }
2284} 3601}
2285 3602
… …
2288 PROTOTYPE: $ 3605 PROTOTYPE: $
2289 ALIAS: 3606 ALIAS:
2290 is_ready = CF_READY 3607 is_ready = CF_READY
2291 is_running = CF_RUNNING 3608 is_running = CF_RUNNING
2292 is_new = CF_NEW 3609 is_new = CF_NEW
2293 is_destroyed = CF_DESTROYED 3610 is_destroyed = CF_ZOMBIE
3611 is_zombie = CF_ZOMBIE
3612 is_suspended = CF_SUSPENDED
2294 CODE: 3613 CODE:
2295 RETVAL = boolSV (coro->flags & ix); 3614 RETVAL = boolSV (coro->flags & ix);
2296 OUTPUT: 3615 OUTPUT:
2297 RETVAL 3616 RETVAL
2298 3617
2299void 3618void
2300throw (Coro::State self, SV *throw = &PL_sv_undef) 3619throw (SV *self, SV *exception = &PL_sv_undef)
2301 PROTOTYPE: $;$ 3620 PROTOTYPE: $;$
2302 CODE: 3621 CODE:
3622{
3623 struct coro *coro = SvSTATE (self);
3624 struct coro *current = SvSTATE_current;
3625 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2303 SvREFCNT_dec (self->throw); 3626 SvREFCNT_dec (*exceptionp);
2304 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3627 SvGETMAGIC (exception);
3628 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3629
3630 api_ready (aTHX_ self);
3631}
2305 3632
2306void 3633void
2307api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3634api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2308 PROTOTYPE: $;$ 3635 PROTOTYPE: $;$
2309 C_ARGS: aTHX_ coro, flags 3636 C_ARGS: aTHX_ coro, flags
2310 3637
2311SV * 3638SV *
2312has_cctx (Coro::State coro) 3639has_cctx (Coro::State coro)
2313 PROTOTYPE: $ 3640 PROTOTYPE: $
2314 CODE: 3641 CODE:
2315 RETVAL = boolSV (!!coro->cctx); 3642 /* maybe manage the running flag differently */
3643 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2316 OUTPUT: 3644 OUTPUT:
2317 RETVAL 3645 RETVAL
2318 3646
2319int 3647int
2320is_traced (Coro::State coro) 3648is_traced (Coro::State coro)
… …
2340 3668
2341void 3669void
2342force_cctx () 3670force_cctx ()
2343 PROTOTYPE: 3671 PROTOTYPE:
2344 CODE: 3672 CODE:
2345 struct coro *coro = SvSTATE (coro_current);
2346 coro->cctx->idle_sp = 0; 3673 cctx_current->idle_sp = 0;
2347 3674
2348void 3675void
2349swap_defsv (Coro::State self) 3676swap_defsv (Coro::State self)
2350 PROTOTYPE: $ 3677 PROTOTYPE: $
2351 ALIAS: 3678 ALIAS:
… …
2359 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3686 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2360 3687
2361 SV *tmp = *src; *src = *dst; *dst = tmp; 3688 SV *tmp = *src; *src = *dst; *dst = tmp;
2362 } 3689 }
2363 3690
3691void
3692cancel (Coro::State self)
3693 CODE:
3694 coro_state_destroy (aTHX_ self);
3695
3696SV *
3697enable_times (int enabled = enable_times)
3698 CODE:
3699{
3700 RETVAL = boolSV (enable_times);
3701
3702 if (enabled != enable_times)
3703 {
3704 enable_times = enabled;
3705
3706 coro_times_update ();
3707 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3708 }
3709}
3710 OUTPUT:
3711 RETVAL
3712
3713void
3714times (Coro::State self)
3715 PPCODE:
3716{
3717 struct coro *current = SvSTATE (coro_current);
3718
3719 if (ecb_expect_false (current == self))
3720 {
3721 coro_times_update ();
3722 coro_times_add (SvSTATE (coro_current));
3723 }
3724
3725 EXTEND (SP, 2);
3726 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3727 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3728
3729 if (ecb_expect_false (current == self))
3730 coro_times_sub (SvSTATE (coro_current));
3731}
3732
3733void
3734swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3735 CODE:
3736{
3737 struct coro *current = SvSTATE_current;
3738
3739 if (current == coro)
3740 SWAP_SVS (current);
3741
3742 if (!coro->swap_sv)
3743 coro->swap_sv = newAV ();
3744
3745 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3746 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3747
3748 if (current == coro)
3749 SWAP_SVS (current);
3750}
3751
3752
2364MODULE = Coro::State PACKAGE = Coro 3753MODULE = Coro::State PACKAGE = Coro
2365 3754
2366BOOT: 3755BOOT:
2367{ 3756{
2368 int i;
2369
2370 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2371 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3757 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2372 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3758 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2373 3759 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2374 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3760 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2375 SvREADONLY_on (coro_current); 3761 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3762 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3763 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3764 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3765
3766 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3767 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3768 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3769 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2376 3770
2377 coro_stash = gv_stashpv ("Coro", TRUE); 3771 coro_stash = gv_stashpv ("Coro", TRUE);
2378 3772
2379 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3773 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2380 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3774 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2381 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3775 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2382 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3776 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2383 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3777 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2384 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3778 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2385
2386 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2387 coro_ready[i] = newAV ();
2388 3779
2389 { 3780 {
2390 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3781 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2391 3782
2392 coroapi.schedule = api_schedule; 3783 coroapi.schedule = api_schedule;
3784 coroapi.schedule_to = api_schedule_to;
2393 coroapi.cede = api_cede; 3785 coroapi.cede = api_cede;
2394 coroapi.cede_notself = api_cede_notself; 3786 coroapi.cede_notself = api_cede_notself;
2395 coroapi.ready = api_ready; 3787 coroapi.ready = api_ready;
2396 coroapi.is_ready = api_is_ready; 3788 coroapi.is_ready = api_is_ready;
2397 coroapi.nready = coro_nready; 3789 coroapi.nready = coro_nready;
2398 coroapi.current = coro_current; 3790 coroapi.current = coro_current;
2399 3791
2400 GCoroAPI = &coroapi; 3792 /*GCoroAPI = &coroapi;*/
2401 sv_setiv (sv, (IV)&coroapi); 3793 sv_setiv (sv, (IV)&coroapi);
2402 SvREADONLY_on (sv); 3794 SvREADONLY_on (sv);
2403 } 3795 }
2404} 3796}
2405 3797
3798SV *
3799async (...)
3800 PROTOTYPE: &@
3801 CODE:
3802 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3803 api_ready (aTHX_ RETVAL);
3804 OUTPUT:
3805 RETVAL
3806
3807void
3808_destroy (Coro::State coro)
3809 CODE:
3810 /* used by the manager thread */
3811 coro_state_destroy (aTHX_ coro);
3812
3813void
3814on_destroy (Coro::State coro, SV *cb)
3815 CODE:
3816 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3817
3818void
3819join (...)
3820 CODE:
3821 CORO_EXECUTE_SLF_XS (slf_init_join);
3822
3823void
3824terminate (...)
3825 CODE:
3826 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3827
3828void
3829cancel (...)
3830 CODE:
3831 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3832
3833int
3834safe_cancel (Coro::State self, ...)
3835 C_ARGS: aTHX_ self, &ST (1), items - 1
3836
2406void 3837void
2407schedule (...) 3838schedule (...)
2408 CODE: 3839 CODE:
2409 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3840 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3841
3842void
3843schedule_to (...)
3844 CODE:
3845 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3846
3847void
3848cede_to (...)
3849 CODE:
3850 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2410 3851
2411void 3852void
2412cede (...) 3853cede (...)
2413 CODE: 3854 CODE:
2414 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3855 CORO_EXECUTE_SLF_XS (slf_init_cede);
2415 3856
2416void 3857void
2417cede_notself (...) 3858cede_notself (...)
2418 CODE: 3859 CODE:
2419 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3860 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2420 3861
2421void 3862void
2422_set_current (SV *current) 3863_set_current (SV *current)
2423 PROTOTYPE: $ 3864 PROTOTYPE: $
2424 CODE: 3865 CODE:
… …
2427 3868
2428void 3869void
2429_set_readyhook (SV *hook) 3870_set_readyhook (SV *hook)
2430 PROTOTYPE: $ 3871 PROTOTYPE: $
2431 CODE: 3872 CODE:
2432 LOCK;
2433 SvREFCNT_dec (coro_readyhook); 3873 SvREFCNT_dec (coro_readyhook);
3874 SvGETMAGIC (hook);
3875 if (SvOK (hook))
3876 {
2434 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3877 coro_readyhook = newSVsv (hook);
2435 UNLOCK; 3878 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3879 }
3880 else
3881 {
3882 coro_readyhook = 0;
3883 CORO_READYHOOK = 0;
3884 }
2436 3885
2437int 3886int
2438prio (Coro::State coro, int newprio = 0) 3887prio (Coro::State coro, int newprio = 0)
2439 PROTOTYPE: $;$ 3888 PROTOTYPE: $;$
2440 ALIAS: 3889 ALIAS:
… …
2446 if (items > 1) 3895 if (items > 1)
2447 { 3896 {
2448 if (ix) 3897 if (ix)
2449 newprio = coro->prio - newprio; 3898 newprio = coro->prio - newprio;
2450 3899
2451 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3900 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2452 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3901 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2453 3902
2454 coro->prio = newprio; 3903 coro->prio = newprio;
2455 } 3904 }
2456} 3905}
2457 OUTPUT: 3906 OUTPUT:
… …
2471 CODE: 3920 CODE:
2472 RETVAL = coro_nready; 3921 RETVAL = coro_nready;
2473 OUTPUT: 3922 OUTPUT:
2474 RETVAL 3923 RETVAL
2475 3924
2476# for async_pool speedup
2477void 3925void
2478_pool_1 (SV *cb) 3926suspend (Coro::State self)
3927 PROTOTYPE: $
2479 CODE: 3928 CODE:
2480{ 3929 self->flags |= CF_SUSPENDED;
2481 struct coro *coro = SvSTATE (coro_current);
2482 HV *hv = (HV *)SvRV (coro_current);
2483 AV *defav = GvAV (PL_defgv);
2484 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2485 AV *invoke_av;
2486 int i, len;
2487 3930
2488 if (!invoke) 3931void
3932resume (Coro::State self)
3933 PROTOTYPE: $
3934 CODE:
3935 self->flags &= ~CF_SUSPENDED;
3936
3937void
3938_pool_handler (...)
3939 CODE:
3940 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3941
3942void
3943async_pool (SV *cv, ...)
3944 PROTOTYPE: &@
3945 PPCODE:
3946{
3947 HV *hv = (HV *)av_pop (av_async_pool);
3948 AV *av = newAV ();
3949 SV *cb = ST (0);
3950 int i;
3951
3952 av_extend (av, items - 2);
3953 for (i = 1; i < items; ++i)
3954 av_push (av, SvREFCNT_inc_NN (ST (i)));
3955
3956 if ((SV *)hv == &PL_sv_undef)
2489 { 3957 {
2490 SV *old = PL_diehook; 3958 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2491 PL_diehook = 0; 3959 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2492 SvREFCNT_dec (old); 3960 SvREFCNT_dec (sv);
2493 croak ("\3async_pool terminate\2\n");
2494 } 3961 }
2495 3962
2496 SvREFCNT_dec (coro->saved_deffh);
2497 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2498
2499 hv_store (hv, "desc", sizeof ("desc") - 1,
2500 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2501
2502 invoke_av = (AV *)SvRV (invoke);
2503 len = av_len (invoke_av);
2504
2505 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2506
2507 if (len > 0)
2508 { 3963 {
2509 av_fill (defav, len - 1); 3964 struct coro *coro = SvSTATE_hv (hv);
2510 for (i = 0; i < len; ++i) 3965
2511 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3966 assert (!coro->invoke_cb);
3967 assert (!coro->invoke_av);
3968 coro->invoke_cb = SvREFCNT_inc (cb);
3969 coro->invoke_av = av;
2512 } 3970 }
3971
3972 api_ready (aTHX_ (SV *)hv);
3973
3974 if (GIMME_V != G_VOID)
3975 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3976 else
3977 SvREFCNT_dec (hv);
2513} 3978}
3979
3980SV *
3981rouse_cb ()
3982 PROTOTYPE:
3983 CODE:
3984 RETVAL = coro_new_rouse_cb (aTHX);
3985 OUTPUT:
3986 RETVAL
2514 3987
2515void 3988void
2516_pool_2 (SV *cb) 3989rouse_wait (...)
3990 PROTOTYPE: ;$
3991 PPCODE:
3992 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3993
3994void
3995on_enter (SV *block)
3996 ALIAS:
3997 on_leave = 1
3998 PROTOTYPE: &
2517 CODE: 3999 CODE:
2518{ 4000{
2519 struct coro *coro = SvSTATE (coro_current); 4001 struct coro *coro = SvSTATE_current;
4002 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2520 4003
2521 sv_setsv (cb, &PL_sv_undef); 4004 block = s_get_cv_croak (block);
2522 4005
2523 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4006 if (!*avp)
2524 coro->saved_deffh = 0;
2525
2526 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2527 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2528 {
2529 SV *old = PL_diehook;
2530 PL_diehook = 0;
2531 SvREFCNT_dec (old);
2532 croak ("\3async_pool terminate\2\n");
2533 }
2534
2535 av_clear (GvAV (PL_defgv));
2536 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2537 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2538
2539 coro->prio = 0;
2540
2541 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2542 api_trace (aTHX_ coro_current, 0);
2543
2544 av_push (av_async_pool, newSVsv (coro_current));
2545}
2546
2547
2548MODULE = Coro::State PACKAGE = Coro::AIO
2549
2550void
2551_get_state (SV *self)
2552 PROTOTYPE: $
2553 PPCODE:
2554{
2555 AV *defav = GvAV (PL_defgv);
2556 AV *av = newAV (); 4007 *avp = newAV ();
2557 int i;
2558 SV *data_sv = newSV (sizeof (struct io_state));
2559 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2560 SvCUR_set (data_sv, sizeof (struct io_state));
2561 SvPOK_only (data_sv);
2562 4008
2563 data->errorno = errno; 4009 av_push (*avp, SvREFCNT_inc (block));
2564 data->laststype = PL_laststype;
2565 data->laststatval = PL_laststatval;
2566 data->statcache = PL_statcache;
2567 4010
2568 av_extend (av, AvFILLp (defav) + 1 + 1); 4011 if (!ix)
4012 on_enterleave_call (aTHX_ block);
2569 4013
2570 for (i = 0; i <= AvFILLp (defav); ++i) 4014 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2571 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4015 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2572 4016 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2573 av_push (av, data_sv);
2574
2575 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2576
2577 api_ready (aTHX_ self);
2578}
2579
2580void
2581_set_state (SV *state)
2582 PROTOTYPE: $
2583 PPCODE:
2584{
2585 AV *av = (AV *)SvRV (state);
2586 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2587 int i;
2588
2589 errno = data->errorno;
2590 PL_laststype = data->laststype;
2591 PL_laststatval = data->laststatval;
2592 PL_statcache = data->statcache;
2593
2594 EXTEND (SP, AvFILLp (av));
2595 for (i = 0; i < AvFILLp (av); ++i)
2596 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2597}
2598
2599
2600MODULE = Coro::State PACKAGE = Coro::AnyEvent
2601
2602BOOT:
2603 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2604
2605void
2606_schedule (...)
2607 CODE:
2608{
2609 static int incede;
2610
2611 api_cede_notself (aTHX);
2612
2613 ++incede;
2614 while (coro_nready >= incede && api_cede (aTHX))
2615 ;
2616
2617 sv_setsv (sv_activity, &PL_sv_undef);
2618 if (coro_nready >= incede)
2619 {
2620 PUSHMARK (SP);
2621 PUTBACK;
2622 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2623 SPAGAIN;
2624 }
2625
2626 --incede;
2627} 4017}
2628 4018
2629 4019
2630MODULE = Coro::State PACKAGE = PerlIO::cede 4020MODULE = Coro::State PACKAGE = PerlIO::cede
2631 4021
2632BOOT: 4022BOOT:
2633 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4023 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2634 4024
4025
2635MODULE = Coro::State PACKAGE = Coro::Semaphore 4026MODULE = Coro::State PACKAGE = Coro::Semaphore
2636 4027
2637SV * 4028SV *
2638new (SV *klass, SV *count_ = 0) 4029new (SV *klass, SV *count = 0)
2639 CODE: 4030 CODE:
2640{ 4031{
2641 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4032 int semcnt = 1;
2642 AV *av = newAV (); 4033
2643 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4034 if (count)
2644 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4035 {
4036 SvGETMAGIC (count);
4037
4038 if (SvOK (count))
4039 semcnt = SvIV (count);
4040 }
4041
4042 RETVAL = sv_bless (
4043 coro_waitarray_new (aTHX_ semcnt),
4044 GvSTASH (CvGV (cv))
4045 );
2645} 4046}
4047 OUTPUT:
4048 RETVAL
4049
4050# helper for Coro::Channel and others
4051SV *
4052_alloc (int count)
4053 CODE:
4054 RETVAL = coro_waitarray_new (aTHX_ count);
2646 OUTPUT: 4055 OUTPUT:
2647 RETVAL 4056 RETVAL
2648 4057
2649SV * 4058SV *
2650count (SV *self) 4059count (SV *self)
… …
2656void 4065void
2657up (SV *self, int adjust = 1) 4066up (SV *self, int adjust = 1)
2658 ALIAS: 4067 ALIAS:
2659 adjust = 1 4068 adjust = 1
2660 CODE: 4069 CODE:
2661{ 4070 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2662 AV *av = (AV *)SvRV (self);
2663 SV *count_sv = AvARRAY (av)[0];
2664 IV count = SvIVX (count_sv);
2665
2666 count += ix ? adjust : 1;
2667 SvIVX (count_sv) = count;
2668
2669 /* now wake up as many waiters as possible */
2670 while (count > 0 && AvFILLp (av) >= count)
2671 {
2672 SV *cb;
2673
2674 /* swap first two elements so we can shift a waiter */
2675 AvARRAY (av)[0] = AvARRAY (av)[1];
2676 AvARRAY (av)[1] = count_sv;
2677 cb = av_shift (av);
2678
2679 if (SvOBJECT (cb))
2680 api_ready (aTHX_ cb);
2681 else
2682 croak ("callbacks not yet supported");
2683
2684 SvREFCNT_dec (cb);
2685 }
2686}
2687 4071
2688void 4072void
2689down (SV *self) 4073down (...)
2690 CODE: 4074 CODE:
2691 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 4075 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4076
4077void
4078wait (...)
4079 CODE:
4080 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2692 4081
2693void 4082void
2694try (SV *self) 4083try (SV *self)
2695 PPCODE: 4084 PPCODE:
2696{ 4085{
… …
2708 XSRETURN_NO; 4097 XSRETURN_NO;
2709} 4098}
2710 4099
2711void 4100void
2712waiters (SV *self) 4101waiters (SV *self)
2713 CODE: 4102 PPCODE:
2714{ 4103{
2715 AV *av = (AV *)SvRV (self); 4104 AV *av = (AV *)SvRV (self);
4105 int wcount = AvFILLp (av) + 1 - 1;
2716 4106
2717 if (GIMME_V == G_SCALAR) 4107 if (GIMME_V == G_SCALAR)
2718 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4108 XPUSHs (sv_2mortal (newSViv (wcount)));
2719 else 4109 else
2720 { 4110 {
2721 int i; 4111 int i;
2722 EXTEND (SP, AvFILLp (av) + 1 - 1); 4112 EXTEND (SP, wcount);
2723 for (i = 1; i <= AvFILLp (av); ++i) 4113 for (i = 1; i <= wcount; ++i)
2724 PUSHs (newSVsv (AvARRAY (av)[i])); 4114 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2725 } 4115 }
2726} 4116}
2727 4117
4118MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4119
4120void
4121_may_delete (SV *sem, int count, unsigned int extra_refs)
4122 PPCODE:
4123{
4124 AV *av = (AV *)SvRV (sem);
4125
4126 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4127 && AvFILLp (av) == 0 /* no waiters, just count */
4128 && SvIV (AvARRAY (av)[0]) == count)
4129 XSRETURN_YES;
4130
4131 XSRETURN_NO;
4132}
4133
4134MODULE = Coro::State PACKAGE = Coro::Signal
4135
4136SV *
4137new (SV *klass)
4138 CODE:
4139 RETVAL = sv_bless (
4140 coro_waitarray_new (aTHX_ 0),
4141 GvSTASH (CvGV (cv))
4142 );
4143 OUTPUT:
4144 RETVAL
4145
4146void
4147wait (...)
4148 CODE:
4149 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4150
4151void
4152broadcast (SV *self)
4153 CODE:
4154{
4155 AV *av = (AV *)SvRV (self);
4156 coro_signal_wake (aTHX_ av, AvFILLp (av));
4157}
4158
4159void
4160send (SV *self)
4161 CODE:
4162{
4163 AV *av = (AV *)SvRV (self);
4164
4165 if (AvFILLp (av))
4166 coro_signal_wake (aTHX_ av, 1);
4167 else
4168 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4169}
4170
4171IV
4172awaited (SV *self)
4173 CODE:
4174 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4175 OUTPUT:
4176 RETVAL
4177
4178
4179MODULE = Coro::State PACKAGE = Coro::AnyEvent
4180
4181BOOT:
4182 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4183
4184void
4185_schedule (...)
4186 CODE:
4187{
4188 static int incede;
4189
4190 api_cede_notself (aTHX);
4191
4192 ++incede;
4193 while (coro_nready >= incede && api_cede (aTHX))
4194 ;
4195
4196 sv_setsv (sv_activity, &PL_sv_undef);
4197 if (coro_nready >= incede)
4198 {
4199 PUSHMARK (SP);
4200 PUTBACK;
4201 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4202 }
4203
4204 --incede;
4205}
4206
4207
4208MODULE = Coro::State PACKAGE = Coro::AIO
4209
4210void
4211_register (char *target, char *proto, SV *req)
4212 CODE:
4213{
4214 SV *req_cv = s_get_cv_croak (req);
4215 /* newXSproto doesn't return the CV on 5.8 */
4216 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4217 sv_setpv ((SV *)slf_cv, proto);
4218 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4219}
4220
4221MODULE = Coro::State PACKAGE = Coro::Select
4222
4223void
4224patch_pp_sselect ()
4225 CODE:
4226 if (!coro_old_pp_sselect)
4227 {
4228 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4229 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4230 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4231 }
4232
4233void
4234unpatch_pp_sselect ()
4235 CODE:
4236 if (coro_old_pp_sselect)
4237 {
4238 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4239 coro_old_pp_sselect = 0;
4240 }
4241

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines