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Comparing Coro/Coro/State.xs (file contents):
Revision 1.292 by root, Tue Nov 18 06:09:35 2008 UTC vs.
Revision 1.437 by root, Tue Nov 5 15:13:42 2013 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 1
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/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
48/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
49#if PERL_VERSION_ATLEAST(5,19,0)
50# define SVt_BIND SVt_IV
51#endif
52
53#if defined(_WIN32)
54# undef HAS_GETTIMEOFDAY
18# undef setjmp 55# undef setjmp
19# undef longjmp 56# undef longjmp
20# undef _exit 57# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 58# define setjmp _setjmp /* deep magic */
22#else 59#else
23# include <inttypes.h> /* most portable stdint.h */ 60# include <inttypes.h> /* most portable stdint.h */
24#endif 61#endif
25 62
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 */ 63/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 64static int cctx_max_idle = 4;
55 65
56#define PERL_VERSION_ATLEAST(a,b,c) \ 66#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 67# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD
111#endif
112
113#ifndef CORO_STACKGUARD
114# define CORO_STACKGUARD 0
115#endif 68#endif
116 69
117/* prefer perl internal functions over our own? */ 70/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 71#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 72# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 73#endif
121 74
122/* The next macros try to return the current stack pointer, in an as 75/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 76 * portable way as possible. */
124#if __GNUC__ >= 4 77#if __GNUC__ >= 4
78# define dSTACKLEVEL int stacklevel_dummy
125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 79# define STACKLEVEL __builtin_frame_address (0)
126#else 80#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 81# define dSTACKLEVEL volatile void *stacklevel
82# define STACKLEVEL ((void *)&stacklevel)
128#endif 83#endif
129 84
130#define IN_DESTRUCT (PL_main_cv == Nullcv) 85#define IN_DESTRUCT PL_dirty
131
132#if __GNUC__ >= 3
133# define attribute(x) __attribute__(x)
134# define expect(expr,value) __builtin_expect ((expr),(value))
135# define INLINE static inline
136#else
137# define attribute(x)
138# define expect(expr,value) (expr)
139# define INLINE static
140#endif
141
142#define expect_false(expr) expect ((expr) != 0, 0)
143#define expect_true(expr) expect ((expr) != 0, 1)
144
145#define NOINLINE attribute ((noinline))
146 86
147#include "CoroAPI.h" 87#include "CoroAPI.h"
88#define GCoroAPI (&coroapi) /* very sneaky */
148 89
149#ifdef USE_ITHREADS 90#ifdef USE_ITHREADS
150# if CORO_PTHREAD 91# if CORO_PTHREAD
151static void *coro_thx; 92static void *coro_thx;
152# endif 93# endif
153#endif 94#endif
154 95
96#ifdef __linux
97# include <time.h> /* for timespec */
98# include <syscall.h> /* for SYS_* */
99# ifdef SYS_clock_gettime
100# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
101# define CORO_CLOCK_MONOTONIC 1
102# define CORO_CLOCK_THREAD_CPUTIME_ID 3
103# endif
104#endif
105
155static double (*nvtime)(); /* so why doesn't it take void? */ 106static double (*nvtime)(); /* so why doesn't it take void? */
107static void (*u2time)(pTHX_ UV ret[2]);
156 108
157/* we hijack an hopefully unused CV flag for our purposes */ 109/* we hijack an hopefully unused CV flag for our purposes */
158#define CVf_SLF 0x4000 110#define CVf_SLF 0x4000
159static OP *pp_slf (pTHX); 111static OP *pp_slf (pTHX);
112static void slf_destroy (pTHX_ struct coro *coro);
160 113
161static U32 cctx_gen; 114static U32 cctx_gen;
162static size_t cctx_stacksize = CORO_STACKSIZE; 115static size_t cctx_stacksize = CORO_STACKSIZE;
163static struct CoroAPI coroapi; 116static struct CoroAPI coroapi;
164static AV *main_mainstack; /* used to differentiate between $main and others */ 117static AV *main_mainstack; /* used to differentiate between $main and others */
165static JMPENV *main_top_env; 118static JMPENV *main_top_env;
166static HV *coro_state_stash, *coro_stash; 119static HV *coro_state_stash, *coro_stash;
167static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 120static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
168 121
122static AV *av_destroy; /* destruction queue */
123static SV *sv_manager; /* the manager coro */
124static SV *sv_idle; /* $Coro::idle */
125
169static GV *irsgv; /* $/ */ 126static GV *irsgv; /* $/ */
170static GV *stdoutgv; /* *STDOUT */ 127static GV *stdoutgv; /* *STDOUT */
171static SV *rv_diehook; 128static SV *rv_diehook;
172static SV *rv_warnhook; 129static SV *rv_warnhook;
173static HV *hv_sig; /* %SIG */ 130static HV *hv_sig; /* %SIG */
174 131
175/* async_pool helper stuff */ 132/* async_pool helper stuff */
176static SV *sv_pool_rss; 133static SV *sv_pool_rss;
177static SV *sv_pool_size; 134static SV *sv_pool_size;
135static SV *sv_async_pool_idle; /* description string */
178static AV *av_async_pool; 136static AV *av_async_pool; /* idle pool */
137static SV *sv_Coro; /* class string */
138static CV *cv_pool_handler;
179 139
180/* Coro::AnyEvent */ 140/* Coro::AnyEvent */
181static SV *sv_activity; 141static SV *sv_activity;
182 142
143/* enable processtime/realtime profiling */
144static char enable_times;
145typedef U32 coro_ts[2];
146static coro_ts time_real, time_cpu;
147static char times_valid;
148
183static struct coro_cctx *cctx_first; 149static struct coro_cctx *cctx_first;
184static int cctx_count, cctx_idle; 150static int cctx_count, cctx_idle;
185 151
186enum { 152enum
153{
187 CC_MAPPED = 0x01, 154 CC_MAPPED = 0x01,
188 CC_NOREUSE = 0x02, /* throw this away after tracing */ 155 CC_NOREUSE = 0x02, /* throw this away after tracing */
189 CC_TRACE = 0x04, 156 CC_TRACE = 0x04,
190 CC_TRACE_SUB = 0x08, /* trace sub calls */ 157 CC_TRACE_SUB = 0x08, /* trace sub calls */
191 CC_TRACE_LINE = 0x10, /* trace each statement */ 158 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
196typedef struct coro_cctx 163typedef struct coro_cctx
197{ 164{
198 struct coro_cctx *next; 165 struct coro_cctx *next;
199 166
200 /* the stack */ 167 /* the stack */
201 void *sptr; 168 struct coro_stack stack;
202 size_t ssize;
203 169
204 /* cpu state */ 170 /* cpu state */
205 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 171 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
172#ifndef NDEBUG
206 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 173 JMPENV *idle_te; /* same as idle_sp, but for top_env */
174#endif
207 JMPENV *top_env; 175 JMPENV *top_env;
208 coro_context cctx; 176 coro_context cctx;
209 177
210 U32 gen; 178 U32 gen;
211#if CORO_USE_VALGRIND 179#if CORO_USE_VALGRIND
212 int valgrind_id; 180 int valgrind_id;
213#endif 181#endif
214 unsigned char flags; 182 unsigned char flags;
215} coro_cctx; 183} coro_cctx;
216 184
185static coro_cctx *cctx_current; /* the currently running cctx */
186
187/*****************************************************************************/
188
189static MGVTBL coro_state_vtbl;
190
217enum { 191enum
192{
218 CF_RUNNING = 0x0001, /* coroutine is running */ 193 CF_RUNNING = 0x0001, /* coroutine is running */
219 CF_READY = 0x0002, /* coroutine is ready */ 194 CF_READY = 0x0002, /* coroutine is ready */
220 CF_NEW = 0x0004, /* has never been switched to */ 195 CF_NEW = 0x0004, /* has never been switched to */
221 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 196 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
197 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
198 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
222}; 199};
223 200
224/* the structure where most of the perl state is stored, overlaid on the cxstack */ 201/* the structure where most of the perl state is stored, overlaid on the cxstack */
225typedef struct 202typedef struct
226{ 203{
227 SV *defsv;
228 AV *defav;
229 SV *errsv;
230 SV *irsgv;
231#define VAR(name,type) type name; 204 #define VARx(name,expr,type) type name;
232# include "state.h" 205 #include "state.h"
233#undef VAR
234} perl_slots; 206} perl_slots;
235 207
208/* how many context stack entries do we need for perl_slots */
236#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 209#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
237 210
238/* this is a structure representing a perl-level coroutine */ 211/* this is a structure representing a perl-level coroutine */
239struct coro { 212struct coro
213{
240 /* the C coroutine allocated to this perl coroutine, if any */ 214 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx; 215 coro_cctx *cctx;
216
217 /* ready queue */
218 struct coro *next_ready;
242 219
243 /* state data */ 220 /* state data */
244 struct CoroSLF slf_frame; /* saved slf frame */ 221 struct CoroSLF slf_frame; /* saved slf frame */
245 AV *mainstack; 222 AV *mainstack;
246 perl_slots *slot; /* basically the saved sp */ 223 perl_slots *slot; /* basically the saved sp */
247 224
225 CV *startcv; /* the CV to execute */
248 AV *args; /* data associated with this coroutine (initial args) */ 226 AV *args; /* data associated with this coroutine (initial args) */
249 int refcnt; /* coroutines are refcounted, yes */
250 int flags; /* CF_ flags */ 227 int flags; /* CF_ flags */
251 HV *hv; /* the perl hash associated with this coro, if any */ 228 HV *hv; /* the perl hash associated with this coro, if any */
252 void (*on_destroy)(pTHX_ struct coro *coro);
253 229
254 /* statistics */ 230 /* statistics */
255 int usecount; /* number of transfers to this coro */ 231 int usecount; /* number of transfers to this coro */
256 232
257 /* coro process data */ 233 /* coro process data */
258 int prio; 234 int prio;
259 SV *throw; /* exception to be thrown */ 235 SV *except; /* exception to be thrown */
236 SV *rouse_cb; /* last rouse callback */
237 AV *on_destroy; /* callbacks or coros to notify on destroy */
238 AV *status; /* the exit status list */
260 239
261 /* async_pool */ 240 /* async_pool */
262 SV *saved_deffh; 241 SV *saved_deffh;
242 SV *invoke_cb;
243 AV *invoke_av;
244
245 /* on_enter/on_leave */
246 AV *on_enter;
247 AV *on_leave;
248
249 /* swap_sv */
250 AV *swap_sv;
251
252 /* times */
253 coro_ts t_cpu, t_real;
263 254
264 /* linked list */ 255 /* linked list */
265 struct coro *next, *prev; 256 struct coro *next, *prev;
266}; 257};
267 258
268typedef struct coro *Coro__State; 259typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 260typedef struct coro *Coro__State_or_hashref;
270 261
271/* the following variables are effectively part of the perl context */ 262/* the following variables are effectively part of the perl context */
272/* and get copied between struct coro and these variables */ 263/* and get copied between struct coro and these variables */
273/* the mainr easonw e don't support windows process emulation */ 264/* the main reason we don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 265static struct CoroSLF slf_frame; /* the current slf frame */
275static SV *coro_throw;
276 266
277/** Coro ********************************************************************/ 267/** Coro ********************************************************************/
278 268
279#define PRIO_MAX 3 269#define CORO_PRIO_MAX 3
280#define PRIO_HIGH 1 270#define CORO_PRIO_HIGH 1
281#define PRIO_NORMAL 0 271#define CORO_PRIO_NORMAL 0
282#define PRIO_LOW -1 272#define CORO_PRIO_LOW -1
283#define PRIO_IDLE -3 273#define CORO_PRIO_IDLE -3
284#define PRIO_MIN -4 274#define CORO_PRIO_MIN -4
285 275
286/* for Coro.pm */ 276/* for Coro.pm */
287static SV *coro_current; 277static SV *coro_current;
288static SV *coro_readyhook; 278static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 279static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
280static CV *cv_coro_run;
290static struct coro *coro_first; 281static struct coro *coro_first;
291#define coro_nready coroapi.nready 282#define coro_nready coroapi.nready
292 283
284/** JIT *********************************************************************/
285
286#if CORO_JIT
287 /* APPLE doesn't have mmap though */
288 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
289 #ifndef CORO_JIT_TYPE
290 #if ECB_AMD64 && CORO_JIT_UNIXY
291 #define CORO_JIT_TYPE "amd64-unix"
292 #elif __i386 && CORO_JIT_UNIXY
293 #define CORO_JIT_TYPE "x86-unix"
294 #endif
295 #endif
296#endif
297
298#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
299 #undef CORO_JIT
300#endif
301
302#if CORO_JIT
303 typedef void (*load_save_perl_slots_type)(perl_slots *);
304 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
305#endif
306
307/** Coro::Select ************************************************************/
308
309static OP *(*coro_old_pp_sselect) (pTHX);
310static SV *coro_select_select;
311
312/* horrible hack, but if it works... */
313static OP *
314coro_pp_sselect (pTHX)
315{
316 dSP;
317 PUSHMARK (SP - 4); /* fake argument list */
318 XPUSHs (coro_select_select);
319 PUTBACK;
320
321 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
322 PL_op->op_flags |= OPf_STACKED;
323 PL_op->op_private = 0;
324 return PL_ppaddr [OP_ENTERSUB](aTHX);
325}
326
327/** time stuff **************************************************************/
328
329#ifdef HAS_GETTIMEOFDAY
330
331ecb_inline void
332coro_u2time (pTHX_ UV ret[2])
333{
334 struct timeval tv;
335 gettimeofday (&tv, 0);
336
337 ret [0] = tv.tv_sec;
338 ret [1] = tv.tv_usec;
339}
340
341ecb_inline double
342coro_nvtime (void)
343{
344 struct timeval tv;
345 gettimeofday (&tv, 0);
346
347 return tv.tv_sec + tv.tv_usec * 1e-6;
348}
349
350ecb_inline void
351time_init (pTHX)
352{
353 nvtime = coro_nvtime;
354 u2time = coro_u2time;
355}
356
357#else
358
359ecb_inline void
360time_init (pTHX)
361{
362 SV **svp;
363
364 require_pv ("Time/HiRes.pm");
365
366 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
367
368 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
369 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
370
371 nvtime = INT2PTR (double (*)(), SvIV (*svp));
372
373 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
374 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
375}
376
377#endif
378
293/** lowlevel stuff **********************************************************/ 379/** lowlevel stuff **********************************************************/
294 380
295static SV * 381static SV * ecb_noinline
296coro_get_sv (pTHX_ const char *name, int create) 382coro_get_sv (pTHX_ const char *name, int create)
297{ 383{
298#if PERL_VERSION_ATLEAST (5,10,0) 384#if PERL_VERSION_ATLEAST (5,10,0)
299 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 385 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
300 get_sv (name, create); 386 get_sv (name, create);
301#endif 387#endif
302 return get_sv (name, create); 388 return get_sv (name, create);
303} 389}
304 390
305static AV * 391static AV * ecb_noinline
306coro_get_av (pTHX_ const char *name, int create) 392coro_get_av (pTHX_ const char *name, int create)
307{ 393{
308#if PERL_VERSION_ATLEAST (5,10,0) 394#if PERL_VERSION_ATLEAST (5,10,0)
309 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 395 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
310 get_av (name, create); 396 get_av (name, create);
311#endif 397#endif
312 return get_av (name, create); 398 return get_av (name, create);
313} 399}
314 400
315static HV * 401static HV * ecb_noinline
316coro_get_hv (pTHX_ const char *name, int create) 402coro_get_hv (pTHX_ const char *name, int create)
317{ 403{
318#if PERL_VERSION_ATLEAST (5,10,0) 404#if PERL_VERSION_ATLEAST (5,10,0)
319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 405 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
320 get_hv (name, create); 406 get_hv (name, create);
321#endif 407#endif
322 return get_hv (name, create); 408 return get_hv (name, create);
323} 409}
324 410
325static AV * 411ecb_inline void
412coro_times_update (void)
413{
414#ifdef coro_clock_gettime
415 struct timespec ts;
416
417 ts.tv_sec = ts.tv_nsec = 0;
418 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
419 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
420
421 ts.tv_sec = ts.tv_nsec = 0;
422 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
423 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
424#else
425 dTHX;
426 UV tv[2];
427
428 u2time (aTHX_ tv);
429 time_real [0] = tv [0];
430 time_real [1] = tv [1] * 1000;
431#endif
432}
433
434ecb_inline void
435coro_times_add (struct coro *c)
436{
437 c->t_real [1] += time_real [1];
438 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
439 c->t_real [0] += time_real [0];
440
441 c->t_cpu [1] += time_cpu [1];
442 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
443 c->t_cpu [0] += time_cpu [0];
444}
445
446ecb_inline void
447coro_times_sub (struct coro *c)
448{
449 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
450 c->t_real [1] -= time_real [1];
451 c->t_real [0] -= time_real [0];
452
453 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
454 c->t_cpu [1] -= time_cpu [1];
455 c->t_cpu [0] -= time_cpu [0];
456}
457
458/*****************************************************************************/
459/* magic glue */
460
461#define CORO_MAGIC_type_cv 26
462#define CORO_MAGIC_type_state PERL_MAGIC_ext
463
464#define CORO_MAGIC_NN(sv, type) \
465 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
466 ? SvMAGIC (sv) \
467 : mg_find (sv, type))
468
469#define CORO_MAGIC(sv, type) \
470 (ecb_expect_true (SvMAGIC (sv)) \
471 ? CORO_MAGIC_NN (sv, type) \
472 : 0)
473
474#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
475#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
476
477ecb_inline MAGIC *
478SvSTATEhv_p (pTHX_ SV *coro)
479{
480 MAGIC *mg;
481
482 if (ecb_expect_true (
483 SvTYPE (coro) == SVt_PVHV
484 && (mg = CORO_MAGIC_state (coro))
485 && mg->mg_virtual == &coro_state_vtbl
486 ))
487 return mg;
488
489 return 0;
490}
491
492ecb_inline struct coro *
493SvSTATE_ (pTHX_ SV *coro)
494{
495 MAGIC *mg;
496
497 if (SvROK (coro))
498 coro = SvRV (coro);
499
500 mg = SvSTATEhv_p (aTHX_ coro);
501 if (!mg)
502 croak ("Coro::State object required");
503
504 return (struct coro *)mg->mg_ptr;
505}
506
507#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
508
509/* faster than SvSTATE, but expects a coroutine hv */
510#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
511#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
512
513/*****************************************************************************/
514/* padlist management and caching */
515
516ecb_inline PADLIST *
326coro_clone_padlist (pTHX_ CV *cv) 517coro_derive_padlist (pTHX_ CV *cv)
327{ 518{
328 AV *padlist = CvPADLIST (cv); 519 PADLIST *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 520 PADLIST *newpadlist;
521 PAD *newpad;
522 PADOFFSET off = PadlistMAX (padlist) + 1;
330 523
331 newpadlist = newAV (); 524#if NEWPADAPI
525
526 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
527 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
528 while (!PadlistARRAY (padlist)[off - 1])
529 --off;
530
531 Perl_pad_push (aTHX_ padlist, off);
532
533 newpad = PadlistARRAY (padlist)[off];
534 PadlistARRAY (padlist)[off] = 0;
535
536#else
537
538#if PERL_VERSION_ATLEAST (5,10,0)
539 Perl_pad_push (aTHX_ padlist, off);
540#else
541 Perl_pad_push (aTHX_ padlist, off, 1);
542#endif
543
544 newpad = PadlistARRAY (padlist)[off];
545 PadlistMAX (padlist) = off - 1;
546
547#endif
548
549 newPADLIST (newpadlist);
550#if !PERL_VERSION_ATLEAST(5,15,3)
551 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
332 AvREAL_off (newpadlist); 552 AvREAL_off (newpadlist);
333#if PERL_VERSION_ATLEAST (5,10,0) 553#endif
334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 554
555 /* Already extended to 2 elements by newPADLIST. */
556 PadlistMAX (newpadlist) = 1;
557 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
558 PadlistARRAY (newpadlist)[1] = newpad;
559
560 return newpadlist;
561}
562
563ecb_inline void
564free_padlist (pTHX_ PADLIST *padlist)
565{
566 /* may be during global destruction */
567 if (!IN_DESTRUCT)
568 {
569 I32 i = PadlistMAX (padlist);
570
571 while (i > 0) /* special-case index 0 */
572 {
573 /* we try to be extra-careful here */
574 PAD *pad = PadlistARRAY (padlist)[i--];
575 I32 j = PadMAX (pad);
576
577 while (j >= 0)
578 SvREFCNT_dec (PadARRAY (pad)[j--]);
579
580 PadMAX (pad) = -1;
581 SvREFCNT_dec (pad);
582 }
583
584 SvREFCNT_dec (PadlistNAMES (padlist));
585
586#if NEWPADAPI
587 Safefree (PadlistARRAY (padlist));
588 Safefree (padlist);
335#else 589#else
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist);
340
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
342 av_store (newpadlist, 1, (SV *)newpad);
343
344 return newpadlist;
345}
346
347static void
348free_padlist (pTHX_ AV *padlist)
349{
350 /* may be during global destruction */
351 if (SvREFCNT (padlist))
352 {
353 I32 i = AvFILLp (padlist); 590 AvFILLp (padlist) = -1;
354 while (i >= 0) 591 AvREAL_off (padlist);
355 {
356 SV **svp = av_fetch (padlist, i--, FALSE);
357 if (svp)
358 {
359 SV *sv;
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))
361 SvREFCNT_dec (sv);
362
363 SvREFCNT_dec (*svp);
364 }
365 }
366
367 SvREFCNT_dec ((SV*)padlist); 592 SvREFCNT_dec ((SV*)padlist);
593#endif
368 } 594 }
369} 595}
370 596
371static int 597static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 598coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 599{
374 AV *padlist; 600 PADLIST *padlist;
375 AV *av = (AV *)mg->mg_obj; 601 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
602 size_t len = *(size_t *)mg->mg_ptr;
376 603
377 /* casting is fun. */ 604 /* perl manages to free our internal AV and _then_ call us */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 605 if (IN_DESTRUCT)
606 return 0;
607
608 while (len--)
379 free_padlist (aTHX_ padlist); 609 free_padlist (aTHX_ padlists[len]);
380
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 610
383 return 0; 611 return 0;
384} 612}
385
386#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 613
389static MGVTBL coro_cv_vtbl = { 614static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 615 0, 0, 0, 0,
391 coro_cv_free 616 coro_cv_free
392}; 617};
393 618
394#define CORO_MAGIC_NN(sv, type) \
395 (expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type))
398
399#define CORO_MAGIC(sv, type) \
400 (expect_true (SvMAGIC (sv)) \
401 ? CORO_MAGIC_NN (sv, type) \
402 : 0)
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* faster than SvSTATE, but expects a coroutine hv */
434#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
435#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
436
437/* the next two functions merely cache the padlists */ 619/* the next two functions merely cache the padlists */
438static void 620ecb_inline void
439get_padlist (pTHX_ CV *cv) 621get_padlist (pTHX_ CV *cv)
440{ 622{
441 MAGIC *mg = CORO_MAGIC_cv (cv); 623 MAGIC *mg = CORO_MAGIC_cv (cv);
442 AV *av; 624 size_t *lenp;
443 625
444 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 626 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
445 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 627 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
446 else 628 else
447 { 629 {
448#if CORO_PREFER_PERL_FUNCTIONS 630#if CORO_PREFER_PERL_FUNCTIONS
449 /* this is probably cleaner? but also slower! */ 631 /* this is probably cleaner? but also slower! */
450 /* in practise, it seems to be less stable */ 632 /* in practise, it seems to be less stable */
451 CV *cp = Perl_cv_clone (cv); 633 CV *cp = Perl_cv_clone (aTHX_ cv);
452 CvPADLIST (cv) = CvPADLIST (cp); 634 CvPADLIST (cv) = CvPADLIST (cp);
453 CvPADLIST (cp) = 0; 635 CvPADLIST (cp) = 0;
454 SvREFCNT_dec (cp); 636 SvREFCNT_dec (cp);
455#else 637#else
456 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 638 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
457#endif 639#endif
458 } 640 }
459} 641}
460 642
461static void 643ecb_inline void
462put_padlist (pTHX_ CV *cv) 644put_padlist (pTHX_ CV *cv)
463{ 645{
464 MAGIC *mg = CORO_MAGIC_cv (cv); 646 MAGIC *mg = CORO_MAGIC_cv (cv);
465 AV *av;
466 647
467 if (expect_false (!mg)) 648 if (ecb_expect_false (!mg))
649 {
468 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 650 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
651 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
652 mg->mg_len = 1; /* so mg_free frees mg_ptr */
653 }
654 else
655 Renew (mg->mg_ptr,
656 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
657 char);
469 658
470 av = (AV *)mg->mg_obj; 659 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
471
472 if (expect_false (AvFILLp (av) >= AvMAX (av)))
473 av_extend (av, AvMAX (av) + 1);
474
475 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
476} 660}
477 661
478/** load & save, init *******************************************************/ 662/** load & save, init *******************************************************/
663
664ecb_inline void
665swap_sv (SV *a, SV *b)
666{
667 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
668 SV tmp;
669
670 /* swap sv_any */
671 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
672
673 /* swap sv_flags */
674 SvFLAGS (&tmp) = SvFLAGS (a);
675 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
676 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
677
678#if PERL_VERSION_ATLEAST (5,10,0)
679 /* perl 5.10 and later complicates this _quite_ a bit, but it also
680 * is much faster, so no quarrels here. alternatively, we could
681 * sv_upgrade to avoid this.
682 */
683 {
684 /* swap sv_u */
685 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
686
687 /* if SvANY points to the head, we need to adjust the pointers,
688 * as the pointer for a still points to b, and maybe vice versa.
689 */
690 #define svany_in_head(type) \
691 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
692
693 if (svany_in_head (SvTYPE (a)))
694 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
695
696 if (svany_in_head (SvTYPE (b)))
697 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
698 }
699#endif
700}
701
702/* swap sv heads, at least logically */
703static void
704swap_svs (pTHX_ Coro__State c)
705{
706 int i;
707
708 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
709 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
710}
711
712#define SWAP_SVS(coro) \
713 if (ecb_expect_false ((coro)->swap_sv)) \
714 swap_svs (aTHX_ (coro))
715
716static void
717on_enterleave_call (pTHX_ SV *cb);
479 718
480static void 719static void
481load_perl (pTHX_ Coro__State c) 720load_perl (pTHX_ Coro__State c)
482{ 721{
483 perl_slots *slot = c->slot; 722 perl_slots *slot = c->slot;
484 c->slot = 0; 723 c->slot = 0;
485 724
486 PL_mainstack = c->mainstack; 725 PL_mainstack = c->mainstack;
487 726
488 GvSV (PL_defgv) = slot->defsv; 727#if CORO_JIT
489 GvAV (PL_defgv) = slot->defav; 728 load_perl_slots (slot);
490 GvSV (PL_errgv) = slot->errsv; 729#else
491 GvSV (irsgv) = slot->irsgv;
492
493 #define VAR(name,type) PL_ ## name = slot->name; 730 #define VARx(name,expr,type) expr = slot->name;
494 # include "state.h" 731 #include "state.h"
495 #undef VAR 732#endif
496 733
497 { 734 {
498 dSP; 735 dSP;
499 736
500 CV *cv; 737 CV *cv;
501 738
502 /* now do the ugly restore mess */ 739 /* now do the ugly restore mess */
503 while (expect_true (cv = (CV *)POPs)) 740 while (ecb_expect_true (cv = (CV *)POPs))
504 { 741 {
505 put_padlist (aTHX_ cv); /* mark this padlist as available */ 742 put_padlist (aTHX_ cv); /* mark this padlist as available */
506 CvDEPTH (cv) = PTR2IV (POPs); 743 CvDEPTH (cv) = PTR2IV (POPs);
507 CvPADLIST (cv) = (AV *)POPs; 744 CvPADLIST (cv) = (PADLIST *)POPs;
508 } 745 }
509 746
510 PUTBACK; 747 PUTBACK;
511 } 748 }
512 749
513 slf_frame = c->slf_frame; 750 slf_frame = c->slf_frame;
514 coro_throw = c->throw; 751 CORO_THROW = c->except;
752
753 if (ecb_expect_false (enable_times))
754 {
755 if (ecb_expect_false (!times_valid))
756 coro_times_update ();
757
758 coro_times_sub (c);
759 }
760
761 if (ecb_expect_false (c->on_enter))
762 {
763 int i;
764
765 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
766 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
767 }
768
769 SWAP_SVS (c);
515} 770}
516 771
517static void 772static void
518save_perl (pTHX_ Coro__State c) 773save_perl (pTHX_ Coro__State c)
519{ 774{
520 c->throw = coro_throw; 775 SWAP_SVS (c);
776
777 if (ecb_expect_false (c->on_leave))
778 {
779 int i;
780
781 for (i = AvFILLp (c->on_leave); i >= 0; --i)
782 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
783 }
784
785 times_valid = 0;
786
787 if (ecb_expect_false (enable_times))
788 {
789 coro_times_update (); times_valid = 1;
790 coro_times_add (c);
791 }
792
793 c->except = CORO_THROW;
521 c->slf_frame = slf_frame; 794 c->slf_frame = slf_frame;
522 795
523 { 796 {
524 dSP; 797 dSP;
525 I32 cxix = cxstack_ix; 798 I32 cxix = cxstack_ix;
… …
533 806
534 XPUSHs (Nullsv); 807 XPUSHs (Nullsv);
535 /* this loop was inspired by pp_caller */ 808 /* this loop was inspired by pp_caller */
536 for (;;) 809 for (;;)
537 { 810 {
538 while (expect_true (cxix >= 0)) 811 while (ecb_expect_true (cxix >= 0))
539 { 812 {
540 PERL_CONTEXT *cx = &ccstk[cxix--]; 813 PERL_CONTEXT *cx = &ccstk[cxix--];
541 814
542 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 815 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
543 { 816 {
544 CV *cv = cx->blk_sub.cv; 817 CV *cv = cx->blk_sub.cv;
545 818
546 if (expect_true (CvDEPTH (cv))) 819 if (ecb_expect_true (CvDEPTH (cv)))
547 { 820 {
548 EXTEND (SP, 3); 821 EXTEND (SP, 3);
549 PUSHs ((SV *)CvPADLIST (cv)); 822 PUSHs ((SV *)CvPADLIST (cv));
550 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 823 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
551 PUSHs ((SV *)cv); 824 PUSHs ((SV *)cv);
… …
554 get_padlist (aTHX_ cv); 827 get_padlist (aTHX_ cv);
555 } 828 }
556 } 829 }
557 } 830 }
558 831
559 if (expect_true (top_si->si_type == PERLSI_MAIN)) 832 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
560 break; 833 break;
561 834
562 top_si = top_si->si_prev; 835 top_si = top_si->si_prev;
563 ccstk = top_si->si_cxstack; 836 ccstk = top_si->si_cxstack;
564 cxix = top_si->si_cxix; 837 cxix = top_si->si_cxix;
… …
566 839
567 PUTBACK; 840 PUTBACK;
568 } 841 }
569 842
570 /* allocate some space on the context stack for our purposes */ 843 /* allocate some space on the context stack for our purposes */
571 /* we manually unroll here, as usually 2 slots is enough */ 844 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
572 if (SLOT_COUNT >= 1) CXINC;
573 if (SLOT_COUNT >= 2) CXINC;
574 if (SLOT_COUNT >= 3) CXINC;
575 { 845 {
576 int i; 846 unsigned int i;
847
577 for (i = 3; i < SLOT_COUNT; ++i) 848 for (i = 0; i < SLOT_COUNT; ++i)
578 CXINC; 849 CXINC;
579 } 850
580 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 851 cxstack_ix -= SLOT_COUNT; /* undo allocation */
852 }
581 853
582 c->mainstack = PL_mainstack; 854 c->mainstack = PL_mainstack;
583 855
584 { 856 {
585 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 857 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
586 858
587 slot->defav = GvAV (PL_defgv); 859#if CORO_JIT
588 slot->defsv = DEFSV; 860 save_perl_slots (slot);
589 slot->errsv = ERRSV; 861#else
590 slot->irsgv = GvSV (irsgv);
591
592 #define VAR(name,type) slot->name = PL_ ## name; 862 #define VARx(name,expr,type) slot->name = expr;
593 # include "state.h" 863 #include "state.h"
594 #undef VAR 864#endif
595 } 865 }
596} 866}
597 867
598/* 868/*
599 * allocate various perl stacks. This is almost an exact copy 869 * allocate various perl stacks. This is almost an exact copy
600 * of perl.c:init_stacks, except that it uses less memory 870 * of perl.c:init_stacks, except that it uses less memory
601 * on the (sometimes correct) assumption that coroutines do 871 * on the (sometimes correct) assumption that coroutines do
602 * not usually need a lot of stackspace. 872 * not usually need a lot of stackspace.
603 */ 873 */
604#if CORO_PREFER_PERL_FUNCTIONS 874#if CORO_PREFER_PERL_FUNCTIONS
605# define coro_init_stacks init_stacks 875# define coro_init_stacks(thx) init_stacks ()
606#else 876#else
607static void 877static void
608coro_init_stacks (pTHX) 878coro_init_stacks (pTHX)
609{ 879{
610 PL_curstackinfo = new_stackinfo(32, 8); 880 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
611 PL_curstackinfo->si_type = PERLSI_MAIN; 881 PL_curstackinfo->si_type = PERLSI_MAIN;
612 PL_curstack = PL_curstackinfo->si_stack; 882 PL_curstack = PL_curstackinfo->si_stack;
613 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 883 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
614 884
615 PL_stack_base = AvARRAY(PL_curstack); 885 PL_stack_base = AvARRAY(PL_curstack);
… …
630#endif 900#endif
631 901
632 New(54,PL_scopestack,8,I32); 902 New(54,PL_scopestack,8,I32);
633 PL_scopestack_ix = 0; 903 PL_scopestack_ix = 0;
634 PL_scopestack_max = 8; 904 PL_scopestack_max = 8;
905#if HAS_SCOPESTACK_NAME
906 New(54,PL_scopestack_name,8,const char*);
907#endif
635 908
636 New(54,PL_savestack,24,ANY); 909 New(54,PL_savestack,24,ANY);
637 PL_savestack_ix = 0; 910 PL_savestack_ix = 0;
638 PL_savestack_max = 24; 911 PL_savestack_max = 24;
639 912
… …
667 } 940 }
668 941
669 Safefree (PL_tmps_stack); 942 Safefree (PL_tmps_stack);
670 Safefree (PL_markstack); 943 Safefree (PL_markstack);
671 Safefree (PL_scopestack); 944 Safefree (PL_scopestack);
945#if HAS_SCOPESTACK_NAME
946 Safefree (PL_scopestack_name);
947#endif
672 Safefree (PL_savestack); 948 Safefree (PL_savestack);
673#if !PERL_VERSION_ATLEAST (5,10,0) 949#if !PERL_VERSION_ATLEAST (5,10,0)
674 Safefree (PL_retstack); 950 Safefree (PL_retstack);
675#endif 951#endif
676} 952}
677 953
954#define CORO_RSS \
955 rss += sizeof (SYM (curstackinfo)); \
956 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
957 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
958 rss += SYM (tmps_max) * sizeof (SV *); \
959 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
960 rss += SYM (scopestack_max) * sizeof (I32); \
961 rss += SYM (savestack_max) * sizeof (ANY);
962
678static size_t 963static size_t
679coro_rss (pTHX_ struct coro *coro) 964coro_rss (pTHX_ struct coro *coro)
680{ 965{
681 size_t rss = sizeof (*coro); 966 size_t rss = sizeof (*coro);
682 967
683 if (coro->mainstack) 968 if (coro->mainstack)
684 { 969 {
685 perl_slots tmp_slot;
686 perl_slots *slot;
687
688 if (coro->flags & CF_RUNNING) 970 if (coro->flags & CF_RUNNING)
689 { 971 {
690 slot = &tmp_slot; 972 #define SYM(sym) PL_ ## sym
691 973 CORO_RSS;
692 #define VAR(name,type) slot->name = PL_ ## name;
693 # include "state.h"
694 #undef VAR 974 #undef SYM
695 } 975 }
696 else 976 else
697 slot = coro->slot;
698
699 if (slot)
700 { 977 {
701 rss += sizeof (slot->curstackinfo); 978 #define SYM(sym) coro->slot->sym
702 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 979 CORO_RSS;
703 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 980 #undef SYM
704 rss += slot->tmps_max * sizeof (SV *);
705 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
706 rss += slot->scopestack_max * sizeof (I32);
707 rss += slot->savestack_max * sizeof (ANY);
708
709#if !PERL_VERSION_ATLEAST (5,10,0)
710 rss += slot->retstack_max * sizeof (OP *);
711#endif
712 } 981 }
713 } 982 }
714 983
715 return rss; 984 return rss;
716} 985}
… …
729#endif 998#endif
730 999
731/* 1000/*
732 * This overrides the default magic get method of %SIG elements. 1001 * This overrides the default magic get method of %SIG elements.
733 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1002 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
734 * and instead of tryign to save and restore the hash elements, we just provide 1003 * and instead of trying to save and restore the hash elements (extremely slow),
735 * readback here. 1004 * we just provide our own readback here.
736 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
737 * not expecting this to actually change the hook. This is a potential problem
738 * when a schedule happens then, but we ignore this.
739 */ 1005 */
740static int 1006static int ecb_cold
741coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1007coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
742{ 1008{
743 const char *s = MgPV_nolen_const (mg); 1009 const char *s = MgPV_nolen_const (mg);
744 1010
745 if (*s == '_') 1011 if (*s == '_')
746 { 1012 {
747 SV **svp = 0; 1013 SV **svp = 0;
748 1014
749 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1015 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
750 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1016 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
751 1017
752 if (svp) 1018 if (svp)
753 { 1019 {
754 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1020 SV *ssv;
1021
1022 if (!*svp)
1023 ssv = &PL_sv_undef;
1024 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1025 ssv = sv_2mortal (newRV_inc (*svp));
1026 else
1027 ssv = *svp;
1028
1029 sv_setsv (sv, ssv);
755 return 0; 1030 return 0;
756 } 1031 }
757 } 1032 }
758 1033
759 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1034 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
760} 1035}
761 1036
762static int 1037static int ecb_cold
763coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1038coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
764{ 1039{
765 const char *s = MgPV_nolen_const (mg); 1040 const char *s = MgPV_nolen_const (mg);
766 1041
767 if (*s == '_') 1042 if (*s == '_')
… …
781 } 1056 }
782 1057
783 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1058 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
784} 1059}
785 1060
786static int 1061static int ecb_cold
787coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1062coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
788{ 1063{
789 const char *s = MgPV_nolen_const (mg); 1064 const char *s = MgPV_nolen_const (mg);
790 1065
791 if (*s == '_') 1066 if (*s == '_')
… …
796 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1071 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
797 1072
798 if (svp) 1073 if (svp)
799 { 1074 {
800 SV *old = *svp; 1075 SV *old = *svp;
801 *svp = newSVsv (sv); 1076 *svp = SvOK (sv) ? newSVsv (sv) : 0;
802 SvREFCNT_dec (old); 1077 SvREFCNT_dec (old);
803 return 0; 1078 return 0;
804 } 1079 }
805 } 1080 }
806 1081
… …
818slf_check_nop (pTHX_ struct CoroSLF *frame) 1093slf_check_nop (pTHX_ struct CoroSLF *frame)
819{ 1094{
820 return 0; 1095 return 0;
821} 1096}
822 1097
823static UNOP coro_setup_op; 1098static int
1099slf_check_repeat (pTHX_ struct CoroSLF *frame)
1100{
1101 return 1;
1102}
824 1103
825static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1104static UNOP init_perl_op;
1105
1106ecb_noinline static void /* noinline to keep it out of the transfer fast path */
826coro_setup (pTHX_ struct coro *coro) 1107init_perl (pTHX_ struct coro *coro)
827{ 1108{
828 /* 1109 /*
829 * emulate part of the perl startup here. 1110 * emulate part of the perl startup here.
830 */ 1111 */
831 coro_init_stacks (aTHX); 1112 coro_init_stacks (aTHX);
832 1113
833 PL_runops = RUNOPS_DEFAULT; 1114 PL_runops = RUNOPS_DEFAULT;
834 PL_curcop = &PL_compiling; 1115 PL_curcop = &PL_compiling;
835 PL_in_eval = EVAL_NULL; 1116 PL_in_eval = EVAL_NULL;
836 PL_comppad = 0; 1117 PL_comppad = 0;
1118 PL_comppad_name = 0;
1119 PL_comppad_name_fill = 0;
1120 PL_comppad_name_floor = 0;
837 PL_curpm = 0; 1121 PL_curpm = 0;
838 PL_curpad = 0; 1122 PL_curpad = 0;
839 PL_localizing = 0; 1123 PL_localizing = 0;
840 PL_dirty = 0;
841 PL_restartop = 0; 1124 PL_restartop = 0;
842#if PERL_VERSION_ATLEAST (5,10,0) 1125#if PERL_VERSION_ATLEAST (5,10,0)
843 PL_parser = 0; 1126 PL_parser = 0;
844#endif 1127#endif
1128 PL_hints = 0;
845 1129
846 /* recreate the die/warn hooks */ 1130 /* recreate the die/warn hooks */
847 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1131 PL_diehook = SvREFCNT_inc (rv_diehook);
848 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1132 PL_warnhook = SvREFCNT_inc (rv_warnhook);
849 1133
850 GvSV (PL_defgv) = newSV (0); 1134 GvSV (PL_defgv) = newSV (0);
851 GvAV (PL_defgv) = coro->args; coro->args = 0; 1135 GvAV (PL_defgv) = coro->args; coro->args = 0;
852 GvSV (PL_errgv) = newSV (0); 1136 GvSV (PL_errgv) = newSV (0);
853 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1137 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1138 GvHV (PL_hintgv) = 0;
854 PL_rs = newSVsv (GvSV (irsgv)); 1139 PL_rs = newSVsv (GvSV (irsgv));
855 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1140 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
856 1141
857 { 1142 {
858 dSP; 1143 dSP;
859 UNOP myop; 1144 UNOP myop;
860 1145
861 Zero (&myop, 1, UNOP); 1146 Zero (&myop, 1, UNOP);
862 myop.op_next = Nullop; 1147 myop.op_next = Nullop;
1148 myop.op_type = OP_ENTERSUB;
863 myop.op_flags = OPf_WANT_VOID; 1149 myop.op_flags = OPf_WANT_VOID;
864 1150
865 PUSHMARK (SP); 1151 PUSHMARK (SP);
866 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1152 PUSHs ((SV *)coro->startcv);
867 PUTBACK; 1153 PUTBACK;
868 PL_op = (OP *)&myop; 1154 PL_op = (OP *)&myop;
869 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1155 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
870 SPAGAIN;
871 } 1156 }
872 1157
873 /* this newly created coroutine might be run on an existing cctx which most 1158 /* this newly created coroutine might be run on an existing cctx which most
874 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1159 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
875 */ 1160 */
876 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1161 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
877 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1162 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1163 slf_frame.destroy = 0;
878 1164
879 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1165 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
880 coro_setup_op.op_type = OP_CUSTOM; 1166 init_perl_op.op_next = PL_op;
1167 init_perl_op.op_type = OP_ENTERSUB;
881 coro_setup_op.op_ppaddr = pp_slf; 1168 init_perl_op.op_ppaddr = pp_slf;
882 coro_setup_op.op_next = PL_op; 1169 /* no flags etc. required, as an init function won't be called */
883 1170
884 PL_op = (OP *)&coro_setup_op; 1171 PL_op = (OP *)&init_perl_op;
885 1172
886 /* copy throw, in case it was set before coro_setup */ 1173 /* copy throw, in case it was set before init_perl */
887 coro_throw = coro->throw; 1174 CORO_THROW = coro->except;
888}
889 1175
1176 SWAP_SVS (coro);
1177
1178 if (ecb_expect_false (enable_times))
1179 {
1180 coro_times_update ();
1181 coro_times_sub (coro);
1182 }
1183}
1184
890static void 1185static void
891coro_destruct (pTHX_ struct coro *coro) 1186coro_unwind_stacks (pTHX)
892{ 1187{
893 if (!IN_DESTRUCT) 1188 if (!IN_DESTRUCT)
894 { 1189 {
895 /* restore all saved variables and stuff */ 1190 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0); 1191 LEAVE_SCOPE (0);
… …
904 POPSTACK_TO (PL_mainstack); 1199 POPSTACK_TO (PL_mainstack);
905 1200
906 /* unwind main stack */ 1201 /* unwind main stack */
907 dounwind (-1); 1202 dounwind (-1);
908 } 1203 }
1204}
909 1205
910 SvREFCNT_dec (GvSV (PL_defgv)); 1206static void
911 SvREFCNT_dec (GvAV (PL_defgv)); 1207destroy_perl (pTHX_ struct coro *coro)
912 SvREFCNT_dec (GvSV (PL_errgv)); 1208{
913 SvREFCNT_dec (PL_defoutgv); 1209 SV *svf [9];
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916 1210
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919 1211 {
1212 SV *old_current = SvRV (coro_current);
1213 struct coro *current = SvSTATE (old_current);
1214
1215 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1216
1217 save_perl (aTHX_ current);
1218
1219 /* this will cause transfer_check to croak on block*/
1220 SvRV_set (coro_current, (SV *)coro->hv);
1221
1222 load_perl (aTHX_ coro);
1223
1224 coro_unwind_stacks (aTHX);
1225
1226 /* restore swapped sv's */
1227 SWAP_SVS (coro);
1228
1229 coro_destruct_stacks (aTHX);
1230
1231 /* now save some sv's to be free'd later */
1232 svf [0] = GvSV (PL_defgv);
1233 svf [1] = (SV *)GvAV (PL_defgv);
1234 svf [2] = GvSV (PL_errgv);
1235 svf [3] = (SV *)PL_defoutgv;
1236 svf [4] = PL_rs;
1237 svf [5] = GvSV (irsgv);
1238 svf [6] = (SV *)GvHV (PL_hintgv);
1239 svf [7] = PL_diehook;
1240 svf [8] = PL_warnhook;
1241 assert (9 == sizeof (svf) / sizeof (*svf));
1242
1243 SvRV_set (coro_current, old_current);
1244
1245 load_perl (aTHX_ current);
1246 }
1247
1248 {
1249 unsigned int i;
1250
1251 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1252 SvREFCNT_dec (svf [i]);
1253
920 SvREFCNT_dec (coro->saved_deffh); 1254 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro_throw); 1255 SvREFCNT_dec (coro->rouse_cb);
922 1256 SvREFCNT_dec (coro->invoke_cb);
923 coro_destruct_stacks (aTHX); 1257 SvREFCNT_dec (coro->invoke_av);
1258 }
924} 1259}
925 1260
926INLINE void 1261ecb_inline void
927free_coro_mortal (pTHX) 1262free_coro_mortal (pTHX)
928{ 1263{
929 if (expect_true (coro_mortal)) 1264 if (ecb_expect_true (coro_mortal))
930 { 1265 {
931 SvREFCNT_dec (coro_mortal); 1266 SvREFCNT_dec ((SV *)coro_mortal);
932 coro_mortal = 0; 1267 coro_mortal = 0;
933 } 1268 }
934} 1269}
935 1270
936static int 1271static int
937runops_trace (pTHX) 1272runops_trace (pTHX)
938{ 1273{
939 COP *oldcop = 0; 1274 COP *oldcop = 0;
940 int oldcxix = -2; 1275 int oldcxix = -2;
941 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 1276
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1277 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 1278 {
946 PERL_ASYNC_CHECK (); 1279 PERL_ASYNC_CHECK ();
947 1280
948 if (cctx->flags & CC_TRACE_ALL) 1281 if (cctx_current->flags & CC_TRACE_ALL)
949 { 1282 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1283 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
951 { 1284 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1285 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 1286 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 1287 AV *av = newAV (); /* return values */
955 SV **cb; 1288 SV **cb;
… …
992 1325
993 if (PL_curcop != &PL_compiling) 1326 if (PL_curcop != &PL_compiling)
994 { 1327 {
995 SV **cb; 1328 SV **cb;
996 1329
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1330 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998 { 1331 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1332 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1333
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1334 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1335 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1336 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1337 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1338 SV *fullname = sv_2mortal (newSV (0));
1007 1339
1008 if (isGV (gv)) 1340 if (isGV (gv))
… …
1013 SAVETMPS; 1345 SAVETMPS;
1014 EXTEND (SP, 3); 1346 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1347 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1348 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1349 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1350 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK; 1351 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1352 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1353 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN; 1354 SPAGAIN;
1023 FREETMPS; 1355 FREETMPS;
… …
1026 } 1358 }
1027 1359
1028 oldcxix = cxstack_ix; 1360 oldcxix = cxstack_ix;
1029 } 1361 }
1030 1362
1031 if (cctx->flags & CC_TRACE_LINE) 1363 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1364 {
1033 dSP; 1365 dSP;
1034 1366
1035 PL_runops = RUNOPS_DEFAULT; 1367 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1368 ENTER;
… …
1055 1387
1056 TAINT_NOT; 1388 TAINT_NOT;
1057 return 0; 1389 return 0;
1058} 1390}
1059 1391
1060static struct coro_cctx *cctx_ssl_cctx;
1061static struct CoroSLF cctx_ssl_frame; 1392static struct CoroSLF cctx_ssl_frame;
1062 1393
1063static void 1394static void
1064slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1395slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1396{
1066 ta->prev = (struct coro *)cctx_ssl_cctx;
1067 ta->next = 0; 1397 ta->prev = 0;
1068} 1398}
1069 1399
1070static int 1400static int
1071slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1401slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072{ 1402{
1073 *frame = cctx_ssl_frame; 1403 *frame = cctx_ssl_frame;
1074 1404
1075 return 1; /* execute the restored frame - there must be one */ 1405 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1076} 1406}
1077 1407
1078/* initialises PL_top_env and injects a pseudo-slf-call to sett he stacklevel */ 1408/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1079static void NOINLINE 1409static void ecb_noinline
1080cctx_prepare (pTHX_ coro_cctx *cctx) 1410cctx_prepare (pTHX)
1081{ 1411{
1082 PL_top_env = &PL_start_env; 1412 PL_top_env = &PL_start_env;
1083 1413
1084 if (cctx->flags & CC_TRACE) 1414 if (cctx_current->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1415 PL_runops = runops_trace;
1086 1416
1087 /* we already must be in an SLF call, there is no other valid way 1417 /* we already must be executing an SLF op, there is no other valid way
1088 * that can lead to creation of a new cctx */ 1418 * that can lead to creation of a new cctx */
1089 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1419 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1090 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1420 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1091 1421
1092 cctx_ssl_cctx = cctx; 1422 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1093 cctx_ssl_frame = slf_frame; 1423 cctx_ssl_frame = slf_frame;
1094 1424
1095 slf_frame.prepare = slf_prepare_set_stacklevel; 1425 slf_frame.prepare = slf_prepare_set_stacklevel;
1096 slf_frame.check = slf_check_set_stacklevel; 1426 slf_frame.check = slf_check_set_stacklevel;
1097} 1427}
1098 1428
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1429/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1430ecb_inline void
1101transfer_tail (pTHX) 1431transfer_tail (pTHX)
1102{ 1432{
1103 free_coro_mortal (aTHX); 1433 free_coro_mortal (aTHX);
1434}
1435
1436/* try to exit the same way perl's main function would do */
1437/* we do not bother resetting the environment or other things *7
1438/* that are not, uhm, essential */
1439/* this obviously also doesn't work when perl is embedded */
1440static void ecb_noinline ecb_cold
1441perlish_exit (pTHX)
1442{
1443 int exitstatus = perl_destruct (PL_curinterp);
1444 perl_free (PL_curinterp);
1445 exit (exitstatus);
1104} 1446}
1105 1447
1106/* 1448/*
1107 * this is a _very_ stripped down perl interpreter ;) 1449 * this is a _very_ stripped down perl interpreter ;)
1108 */ 1450 */
… …
1120 /* normally we would need to skip the entersub here */ 1462 /* normally we would need to skip the entersub here */
1121 /* not doing so will re-execute it, which is exactly what we want */ 1463 /* not doing so will re-execute it, which is exactly what we want */
1122 /* PL_nop = PL_nop->op_next */ 1464 /* PL_nop = PL_nop->op_next */
1123 1465
1124 /* inject a fake subroutine call to cctx_init */ 1466 /* inject a fake subroutine call to cctx_init */
1125 cctx_prepare (aTHX_ (coro_cctx *)arg); 1467 cctx_prepare (aTHX);
1126 1468
1127 /* cctx_run is the alternative tail of transfer() */ 1469 /* cctx_run is the alternative tail of transfer() */
1128 transfer_tail (aTHX); 1470 transfer_tail (aTHX);
1129 1471
1130 /* somebody or something will hit me for both perl_run and PL_restartop */ 1472 /* somebody or something will hit me for both perl_run and PL_restartop */
1131 PL_restartop = PL_op; 1473 PL_restartop = PL_op;
1132 perl_run (PL_curinterp); 1474 perl_run (PL_curinterp);
1475 /*
1476 * Unfortunately, there is no way to get at the return values of the
1477 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1478 * runtime errors here, as this is just a random interpreter, not a thread.
1479 */
1133 1480
1134 /* 1481 /*
1135 * If perl-run returns we assume exit() was being called or the coro 1482 * If perl-run returns we assume exit() was being called or the coro
1136 * fell off the end, which seems to be the only valid (non-bug) 1483 * fell off the end, which seems to be the only valid (non-bug)
1137 * reason for perl_run to return. We try to exit by jumping to the 1484 * reason for perl_run to return. We try to mimic whatever perl is normally
1138 * bootstrap-time "top" top_env, as we cannot restore the "main" 1485 * doing in that case. YMMV.
1139 * coroutine as Coro has no such concept
1140 */ 1486 */
1141 PL_top_env = main_top_env; 1487 perlish_exit (aTHX);
1142 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1143 } 1488 }
1144} 1489}
1145 1490
1146static coro_cctx * 1491static coro_cctx *
1147cctx_new () 1492cctx_new (void)
1148{ 1493{
1149 coro_cctx *cctx; 1494 coro_cctx *cctx;
1150 1495
1151 ++cctx_count; 1496 ++cctx_count;
1152 New (0, cctx, 1, coro_cctx); 1497 New (0, cctx, 1, coro_cctx);
… …
1158 return cctx; 1503 return cctx;
1159} 1504}
1160 1505
1161/* create a new cctx only suitable as source */ 1506/* create a new cctx only suitable as source */
1162static coro_cctx * 1507static coro_cctx *
1163cctx_new_empty () 1508cctx_new_empty (void)
1164{ 1509{
1165 coro_cctx *cctx = cctx_new (); 1510 coro_cctx *cctx = cctx_new ();
1166 1511
1167 cctx->sptr = 0; 1512 cctx->stack.sptr = 0;
1168 coro_create (&cctx->cctx, 0, 0, 0, 0); 1513 coro_create (&cctx->cctx, 0, 0, 0, 0);
1169 1514
1170 return cctx; 1515 return cctx;
1171} 1516}
1172 1517
1173/* create a new cctx suitable as destination/running a perl interpreter */ 1518/* create a new cctx suitable as destination/running a perl interpreter */
1174static coro_cctx * 1519static coro_cctx *
1175cctx_new_run () 1520cctx_new_run (void)
1176{ 1521{
1177 coro_cctx *cctx = cctx_new (); 1522 coro_cctx *cctx = cctx_new ();
1178 void *stack_start;
1179 size_t stack_size;
1180 1523
1181#if HAVE_MMAP 1524 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1182 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1183 /* mmap supposedly does allocate-on-write for us */
1184 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1185
1186 if (cctx->sptr != (void *)-1)
1187 {
1188 #if CORO_STACKGUARD
1189 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1190 #endif
1191 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1192 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1193 cctx->flags |= CC_MAPPED;
1194 } 1525 {
1195 else
1196#endif
1197 {
1198 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1199 New (0, cctx->sptr, cctx_stacksize, long);
1200
1201 if (!cctx->sptr)
1202 {
1203 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1526 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1204 _exit (EXIT_FAILURE); 1527 _exit (EXIT_FAILURE);
1205 }
1206
1207 stack_start = cctx->sptr;
1208 stack_size = cctx->ssize;
1209 } 1528 }
1210 1529
1211 #if CORO_USE_VALGRIND
1212 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1213 #endif
1214
1215 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1530 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1216 1531
1217 return cctx; 1532 return cctx;
1218} 1533}
1219 1534
1220static void 1535static void
1221cctx_destroy (coro_cctx *cctx) 1536cctx_destroy (coro_cctx *cctx)
1222{ 1537{
1223 if (!cctx) 1538 if (!cctx)
1224 return; 1539 return;
1225 1540
1541 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1542
1226 --cctx_count; 1543 --cctx_count;
1227 coro_destroy (&cctx->cctx); 1544 coro_destroy (&cctx->cctx);
1228 1545
1229 /* coro_transfer creates new, empty cctx's */ 1546 coro_stack_free (&cctx->stack);
1230 if (cctx->sptr)
1231 {
1232 #if CORO_USE_VALGRIND
1233 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1234 #endif
1235
1236#if HAVE_MMAP
1237 if (cctx->flags & CC_MAPPED)
1238 munmap (cctx->sptr, cctx->ssize);
1239 else
1240#endif
1241 Safefree (cctx->sptr);
1242 }
1243 1547
1244 Safefree (cctx); 1548 Safefree (cctx);
1245} 1549}
1246 1550
1247/* wether this cctx should be destructed */ 1551/* wether this cctx should be destructed */
1248#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1552#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1249 1553
1250static coro_cctx * 1554static coro_cctx *
1251cctx_get (pTHX) 1555cctx_get (pTHX)
1252{ 1556{
1253 while (expect_true (cctx_first)) 1557 while (ecb_expect_true (cctx_first))
1254 { 1558 {
1255 coro_cctx *cctx = cctx_first; 1559 coro_cctx *cctx = cctx_first;
1256 cctx_first = cctx->next; 1560 cctx_first = cctx->next;
1257 --cctx_idle; 1561 --cctx_idle;
1258 1562
1259 if (expect_true (!CCTX_EXPIRED (cctx))) 1563 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1260 return cctx; 1564 return cctx;
1261 1565
1262 cctx_destroy (cctx); 1566 cctx_destroy (cctx);
1263 } 1567 }
1264 1568
… …
1266} 1570}
1267 1571
1268static void 1572static void
1269cctx_put (coro_cctx *cctx) 1573cctx_put (coro_cctx *cctx)
1270{ 1574{
1271 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1575 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1272 1576
1273 /* free another cctx if overlimit */ 1577 /* free another cctx if overlimit */
1274 if (expect_false (cctx_idle >= cctx_max_idle)) 1578 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1275 { 1579 {
1276 coro_cctx *first = cctx_first; 1580 coro_cctx *first = cctx_first;
1277 cctx_first = first->next; 1581 cctx_first = first->next;
1278 --cctx_idle; 1582 --cctx_idle;
1279 1583
… …
1290static void 1594static void
1291transfer_check (pTHX_ struct coro *prev, struct coro *next) 1595transfer_check (pTHX_ struct coro *prev, struct coro *next)
1292{ 1596{
1293 /* TODO: throwing up here is considered harmful */ 1597 /* TODO: throwing up here is considered harmful */
1294 1598
1295 if (expect_true (prev != next)) 1599 if (ecb_expect_true (prev != next))
1296 { 1600 {
1297 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1601 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1298 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1602 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1299 1603
1300 if (expect_false (next->flags & CF_RUNNING)) 1604 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1301 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1302
1303 if (expect_false (next->flags & CF_DESTROYED))
1304 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1605 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1305 1606
1306#if !PERL_VERSION_ATLEAST (5,10,0) 1607#if !PERL_VERSION_ATLEAST (5,10,0)
1307 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1608 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1308 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1609 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1309#endif 1610#endif
1310 } 1611 }
1311} 1612}
1312 1613
1313/* always use the TRANSFER macro */ 1614/* always use the TRANSFER macro */
1314static void NOINLINE /* noinline so we have a fixed stackframe */ 1615static void ecb_noinline /* noinline so we have a fixed stackframe */
1315transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1616transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1316{ 1617{
1317 dSTACKLEVEL; 1618 dSTACKLEVEL;
1318 1619
1319 /* sometimes transfer is only called to set idle_sp */ 1620 /* sometimes transfer is only called to set idle_sp */
1320 if (expect_false (!next)) 1621 if (ecb_expect_false (!prev))
1321 { 1622 {
1322 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1623 cctx_current->idle_sp = STACKLEVEL;
1323 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1624 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1324 } 1625 }
1325 else if (expect_true (prev != next)) 1626 else if (ecb_expect_true (prev != next))
1326 { 1627 {
1327 coro_cctx *prev__cctx; 1628 coro_cctx *cctx_prev;
1328 1629
1329 if (expect_false (prev->flags & CF_NEW)) 1630 if (ecb_expect_false (prev->flags & CF_NEW))
1330 { 1631 {
1331 /* create a new empty/source context */ 1632 /* create a new empty/source context */
1332 prev->cctx = cctx_new_empty ();
1333 prev->flags &= ~CF_NEW; 1633 prev->flags &= ~CF_NEW;
1334 prev->flags |= CF_RUNNING; 1634 prev->flags |= CF_RUNNING;
1335 } 1635 }
1336 1636
1337 prev->flags &= ~CF_RUNNING; 1637 prev->flags &= ~CF_RUNNING;
1338 next->flags |= CF_RUNNING; 1638 next->flags |= CF_RUNNING;
1339 1639
1340 /* first get rid of the old state */ 1640 /* first get rid of the old state */
1341 save_perl (aTHX_ prev); 1641 save_perl (aTHX_ prev);
1342 1642
1343 if (expect_false (next->flags & CF_NEW)) 1643 if (ecb_expect_false (next->flags & CF_NEW))
1344 { 1644 {
1345 /* need to start coroutine */ 1645 /* need to start coroutine */
1346 next->flags &= ~CF_NEW; 1646 next->flags &= ~CF_NEW;
1347 /* setup coroutine call */ 1647 /* setup coroutine call */
1348 coro_setup (aTHX_ next); 1648 init_perl (aTHX_ next);
1349 } 1649 }
1350 else 1650 else
1351 load_perl (aTHX_ next); 1651 load_perl (aTHX_ next);
1352 1652
1353 prev__cctx = prev->cctx;
1354
1355 /* possibly untie and reuse the cctx */ 1653 /* possibly untie and reuse the cctx */
1356 if (expect_true ( 1654 if (ecb_expect_true (
1357 prev__cctx->idle_sp == (void *)stacklevel 1655 cctx_current->idle_sp == STACKLEVEL
1358 && !(prev__cctx->flags & CC_TRACE) 1656 && !(cctx_current->flags & CC_TRACE)
1359 && !force_cctx 1657 && !force_cctx
1360 )) 1658 ))
1361 { 1659 {
1362 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1660 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1363 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1661 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1364 1662
1365 prev->cctx = 0;
1366
1367 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1663 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1368 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1664 /* without this the next cctx_get might destroy the running cctx while still in use */
1369 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1665 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1370 if (!next->cctx) 1666 if (ecb_expect_true (!next->cctx))
1371 next->cctx = cctx_get (aTHX); 1667 next->cctx = cctx_get (aTHX);
1372 1668
1373 cctx_put (prev__cctx); 1669 cctx_put (cctx_current);
1374 } 1670 }
1671 else
1672 prev->cctx = cctx_current;
1375 1673
1376 ++next->usecount; 1674 ++next->usecount;
1377 1675
1378 if (expect_true (!next->cctx)) 1676 cctx_prev = cctx_current;
1379 next->cctx = cctx_get (aTHX); 1677 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1380 1678
1381 if (expect_false (prev__cctx != next->cctx)) 1679 next->cctx = 0;
1680
1681 if (ecb_expect_false (cctx_prev != cctx_current))
1382 { 1682 {
1383 prev__cctx->top_env = PL_top_env; 1683 cctx_prev->top_env = PL_top_env;
1384 PL_top_env = next->cctx->top_env; 1684 PL_top_env = cctx_current->top_env;
1385 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1685 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1386 } 1686 }
1387 1687
1388 transfer_tail (aTHX); 1688 transfer_tail (aTHX);
1389 } 1689 }
1390} 1690}
… …
1392#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1692#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1393#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1693#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1394 1694
1395/** high level stuff ********************************************************/ 1695/** high level stuff ********************************************************/
1396 1696
1697/* this function is actually Coro, not Coro::State, but we call it from here */
1698/* because it is convenient - but it hasn't been declared yet for that reason */
1397static int 1699static void
1700coro_call_on_destroy (pTHX_ struct coro *coro);
1701
1702static void
1398coro_state_destroy (pTHX_ struct coro *coro) 1703coro_state_destroy (pTHX_ struct coro *coro)
1399{ 1704{
1400 if (coro->flags & CF_DESTROYED) 1705 if (coro->flags & CF_ZOMBIE)
1401 return 0; 1706 return;
1402 1707
1403 if (coro->on_destroy)
1404 coro->on_destroy (aTHX_ coro); 1708 slf_destroy (aTHX_ coro);
1405 1709
1406 coro->flags |= CF_DESTROYED; 1710 coro->flags |= CF_ZOMBIE;
1407 1711
1408 if (coro->flags & CF_READY) 1712 if (coro->flags & CF_READY)
1409 { 1713 {
1410 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1714 /* reduce nready, as destroying a ready coro effectively unreadies it */
1411 /* alternative: look through all ready queues and remove the coro */ 1715 /* alternative: look through all ready queues and remove the coro */
1412 --coro_nready; 1716 --coro_nready;
1413 } 1717 }
1414 else 1718 else
1415 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1719 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1416 1720
1417 if (coro->mainstack && coro->mainstack != main_mainstack)
1418 {
1419 struct coro temp;
1420
1421 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1422
1423 save_perl (aTHX_ &temp);
1424 load_perl (aTHX_ coro);
1425
1426 coro_destruct (aTHX_ coro);
1427
1428 load_perl (aTHX_ &temp);
1429
1430 coro->slot = 0;
1431 }
1432
1433 cctx_destroy (coro->cctx);
1434 SvREFCNT_dec (coro->args);
1435
1436 if (coro->next) coro->next->prev = coro->prev; 1721 if (coro->next) coro->next->prev = coro->prev;
1437 if (coro->prev) coro->prev->next = coro->next; 1722 if (coro->prev) coro->prev->next = coro->next;
1438 if (coro == coro_first) coro_first = coro->next; 1723 if (coro == coro_first) coro_first = coro->next;
1439 1724
1440 return 1; 1725 if (coro->mainstack
1726 && coro->mainstack != main_mainstack
1727 && coro->slot
1728 && !PL_dirty)
1729 destroy_perl (aTHX_ coro);
1730
1731 cctx_destroy (coro->cctx);
1732 SvREFCNT_dec (coro->startcv);
1733 SvREFCNT_dec (coro->args);
1734 SvREFCNT_dec (coro->swap_sv);
1735 SvREFCNT_dec (CORO_THROW);
1736
1737 coro_call_on_destroy (aTHX_ coro);
1738
1739 /* more destruction mayhem in coro_state_free */
1441} 1740}
1442 1741
1443static int 1742static int
1444coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1743coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1445{ 1744{
1446 struct coro *coro = (struct coro *)mg->mg_ptr; 1745 struct coro *coro = (struct coro *)mg->mg_ptr;
1447 mg->mg_ptr = 0; 1746 mg->mg_ptr = 0;
1448 1747
1449 coro->hv = 0;
1450
1451 if (--coro->refcnt < 0)
1452 {
1453 coro_state_destroy (aTHX_ coro); 1748 coro_state_destroy (aTHX_ coro);
1749 SvREFCNT_dec (coro->on_destroy);
1750 SvREFCNT_dec (coro->status);
1751
1454 Safefree (coro); 1752 Safefree (coro);
1455 }
1456 1753
1457 return 0; 1754 return 0;
1458} 1755}
1459 1756
1460static int 1757static int ecb_cold
1461coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1758coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1462{ 1759{
1463 struct coro *coro = (struct coro *)mg->mg_ptr; 1760 /* called when perl clones the current process the slow way (windows process emulation) */
1464 1761 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1465 ++coro->refcnt; 1762 mg->mg_ptr = 0;
1763 mg->mg_virtual = 0;
1466 1764
1467 return 0; 1765 return 0;
1468} 1766}
1469 1767
1470static MGVTBL coro_state_vtbl = { 1768static MGVTBL coro_state_vtbl = {
… …
1495 TRANSFER (ta, 1); 1793 TRANSFER (ta, 1);
1496} 1794}
1497 1795
1498/** Coro ********************************************************************/ 1796/** Coro ********************************************************************/
1499 1797
1500INLINE void 1798ecb_inline void
1501coro_enq (pTHX_ struct coro *coro) 1799coro_enq (pTHX_ struct coro *coro)
1502{ 1800{
1503 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1801 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1504}
1505 1802
1506INLINE SV * 1803 SvREFCNT_inc_NN (coro->hv);
1804
1805 coro->next_ready = 0;
1806 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1807 ready [1] = coro;
1808}
1809
1810ecb_inline struct coro *
1507coro_deq (pTHX) 1811coro_deq (pTHX)
1508{ 1812{
1509 int prio; 1813 int prio;
1510 1814
1511 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1815 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1512 if (AvFILLp (coro_ready [prio]) >= 0) 1816 {
1513 return av_shift (coro_ready [prio]); 1817 struct coro **ready = coro_ready [prio];
1818
1819 if (ready [0])
1820 {
1821 struct coro *coro = ready [0];
1822 ready [0] = coro->next_ready;
1823 return coro;
1824 }
1825 }
1514 1826
1515 return 0; 1827 return 0;
1828}
1829
1830static void
1831invoke_sv_ready_hook_helper (void)
1832{
1833 dTHX;
1834 dSP;
1835
1836 ENTER;
1837 SAVETMPS;
1838
1839 PUSHMARK (SP);
1840 PUTBACK;
1841 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1842
1843 FREETMPS;
1844 LEAVE;
1516} 1845}
1517 1846
1518static int 1847static int
1519api_ready (pTHX_ SV *coro_sv) 1848api_ready (pTHX_ SV *coro_sv)
1520{ 1849{
1521 struct coro *coro;
1522 SV *sv_hook;
1523 void (*xs_hook)(void);
1524
1525 if (SvROK (coro_sv))
1526 coro_sv = SvRV (coro_sv);
1527
1528 coro = SvSTATE (coro_sv); 1850 struct coro *coro = SvSTATE (coro_sv);
1529 1851
1530 if (coro->flags & CF_READY) 1852 if (coro->flags & CF_READY)
1531 return 0; 1853 return 0;
1532 1854
1533 coro->flags |= CF_READY; 1855 coro->flags |= CF_READY;
1534 1856
1535 sv_hook = coro_nready ? 0 : coro_readyhook;
1536 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1537
1538 coro_enq (aTHX_ coro); 1857 coro_enq (aTHX_ coro);
1539 ++coro_nready;
1540 1858
1541 if (sv_hook) 1859 if (!coro_nready++)
1542 { 1860 if (coroapi.readyhook)
1543 dSP; 1861 coroapi.readyhook ();
1544
1545 ENTER;
1546 SAVETMPS;
1547
1548 PUSHMARK (SP);
1549 PUTBACK;
1550 call_sv (sv_hook, G_VOID | G_DISCARD);
1551
1552 FREETMPS;
1553 LEAVE;
1554 }
1555
1556 if (xs_hook)
1557 xs_hook ();
1558 1862
1559 return 1; 1863 return 1;
1560} 1864}
1561 1865
1562static int 1866static int
1563api_is_ready (pTHX_ SV *coro_sv) 1867api_is_ready (pTHX_ SV *coro_sv)
1564{ 1868{
1565 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1869 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1566} 1870}
1567 1871
1568INLINE void 1872/* expects to own a reference to next->hv */
1873ecb_inline void
1569prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1874prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1570{ 1875{
1571 SV *prev_sv, *next_sv;
1572
1573 for (;;)
1574 {
1575 next_sv = coro_deq (aTHX);
1576
1577 /* nothing to schedule: call the idle handler */
1578 if (expect_false (!next_sv))
1579 {
1580 dSP;
1581
1582 ENTER;
1583 SAVETMPS;
1584
1585 PUSHMARK (SP);
1586 PUTBACK;
1587 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1588
1589 FREETMPS;
1590 LEAVE;
1591 continue;
1592 }
1593
1594 ta->next = SvSTATE_hv (next_sv);
1595
1596 /* cannot transfer to destroyed coros, skip and look for next */
1597 if (expect_false (ta->next->flags & CF_DESTROYED))
1598 {
1599 SvREFCNT_dec (next_sv);
1600 /* coro_nready has already been taken care of by destroy */
1601 continue;
1602 }
1603
1604 --coro_nready;
1605 break;
1606 }
1607
1608 /* free this only after the transfer */
1609 prev_sv = SvRV (coro_current); 1876 SV *prev_sv = SvRV (coro_current);
1877
1610 ta->prev = SvSTATE_hv (prev_sv); 1878 ta->prev = SvSTATE_hv (prev_sv);
1879 ta->next = next;
1880
1611 TRANSFER_CHECK (*ta); 1881 TRANSFER_CHECK (*ta);
1612 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1882
1613 ta->next->flags &= ~CF_READY;
1614 SvRV_set (coro_current, next_sv); 1883 SvRV_set (coro_current, (SV *)next->hv);
1615 1884
1616 free_coro_mortal (aTHX); 1885 free_coro_mortal (aTHX);
1617 coro_mortal = prev_sv; 1886 coro_mortal = prev_sv;
1618} 1887}
1619 1888
1620INLINE void 1889static void
1890prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1891{
1892 for (;;)
1893 {
1894 struct coro *next = coro_deq (aTHX);
1895
1896 if (ecb_expect_true (next))
1897 {
1898 /* cannot transfer to destroyed coros, skip and look for next */
1899 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1900 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1901 else
1902 {
1903 next->flags &= ~CF_READY;
1904 --coro_nready;
1905
1906 prepare_schedule_to (aTHX_ ta, next);
1907 break;
1908 }
1909 }
1910 else
1911 {
1912 /* nothing to schedule: call the idle handler */
1913 if (SvROK (sv_idle)
1914 && SvOBJECT (SvRV (sv_idle)))
1915 {
1916 if (SvRV (sv_idle) == SvRV (coro_current))
1917 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1918
1919 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1920 api_ready (aTHX_ SvRV (sv_idle));
1921 --coro_nready;
1922 }
1923 else
1924 {
1925 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1926 dSP;
1927
1928 ENTER;
1929 SAVETMPS;
1930
1931 PUSHMARK (SP);
1932 PUTBACK;
1933 call_sv (sv_idle, G_VOID | G_DISCARD);
1934
1935 FREETMPS;
1936 LEAVE;
1937 }
1938 }
1939 }
1940}
1941
1942ecb_inline void
1621prepare_cede (pTHX_ struct coro_transfer_args *ta) 1943prepare_cede (pTHX_ struct coro_transfer_args *ta)
1622{ 1944{
1623 api_ready (aTHX_ coro_current); 1945 api_ready (aTHX_ coro_current);
1624 prepare_schedule (aTHX_ ta); 1946 prepare_schedule (aTHX_ ta);
1625} 1947}
1626 1948
1627INLINE void 1949ecb_inline void
1628prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1950prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1629{ 1951{
1630 SV *prev = SvRV (coro_current); 1952 SV *prev = SvRV (coro_current);
1631 1953
1632 if (coro_nready) 1954 if (coro_nready)
… …
1645 1967
1646 prepare_schedule (aTHX_ &ta); 1968 prepare_schedule (aTHX_ &ta);
1647 TRANSFER (ta, 1); 1969 TRANSFER (ta, 1);
1648} 1970}
1649 1971
1972static void
1973api_schedule_to (pTHX_ SV *coro_sv)
1974{
1975 struct coro_transfer_args ta;
1976 struct coro *next = SvSTATE (coro_sv);
1977
1978 SvREFCNT_inc_NN (coro_sv);
1979 prepare_schedule_to (aTHX_ &ta, next);
1980}
1981
1650static int 1982static int
1651api_cede (pTHX) 1983api_cede (pTHX)
1652{ 1984{
1653 struct coro_transfer_args ta; 1985 struct coro_transfer_args ta;
1654 1986
1655 prepare_cede (aTHX_ &ta); 1987 prepare_cede (aTHX_ &ta);
1656 1988
1657 if (expect_true (ta.prev != ta.next)) 1989 if (ecb_expect_true (ta.prev != ta.next))
1658 { 1990 {
1659 TRANSFER (ta, 1); 1991 TRANSFER (ta, 1);
1660 return 1; 1992 return 1;
1661 } 1993 }
1662 else 1994 else
… …
1681static void 2013static void
1682api_trace (pTHX_ SV *coro_sv, int flags) 2014api_trace (pTHX_ SV *coro_sv, int flags)
1683{ 2015{
1684 struct coro *coro = SvSTATE (coro_sv); 2016 struct coro *coro = SvSTATE (coro_sv);
1685 2017
2018 if (coro->flags & CF_RUNNING)
2019 croak ("cannot enable tracing on a running coroutine, caught");
2020
1686 if (flags & CC_TRACE) 2021 if (flags & CC_TRACE)
1687 { 2022 {
1688 if (!coro->cctx) 2023 if (!coro->cctx)
1689 coro->cctx = cctx_new_run (); 2024 coro->cctx = cctx_new_run ();
1690 else if (!(coro->cctx->flags & CC_TRACE)) 2025 else if (!(coro->cctx->flags & CC_TRACE))
1691 croak ("cannot enable tracing on coroutine with custom stack,"); 2026 croak ("cannot enable tracing on coroutine with custom stack, caught");
1692 2027
1693 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2028 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1694 } 2029 }
1695 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2030 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1696 { 2031 {
… …
1699 if (coro->flags & CF_RUNNING) 2034 if (coro->flags & CF_RUNNING)
1700 PL_runops = RUNOPS_DEFAULT; 2035 PL_runops = RUNOPS_DEFAULT;
1701 else 2036 else
1702 coro->slot->runops = RUNOPS_DEFAULT; 2037 coro->slot->runops = RUNOPS_DEFAULT;
1703 } 2038 }
2039}
2040
2041static void
2042coro_push_av (pTHX_ AV *av, I32 gimme_v)
2043{
2044 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2045 {
2046 dSP;
2047
2048 if (gimme_v == G_SCALAR)
2049 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2050 else
2051 {
2052 int i;
2053 EXTEND (SP, AvFILLp (av) + 1);
2054
2055 for (i = 0; i <= AvFILLp (av); ++i)
2056 PUSHs (AvARRAY (av)[i]);
2057 }
2058
2059 PUTBACK;
2060 }
2061}
2062
2063static void
2064coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2065{
2066 if (!coro->on_destroy)
2067 coro->on_destroy = newAV ();
2068
2069 av_push (coro->on_destroy, cb);
2070}
2071
2072static void
2073slf_destroy_join (pTHX_ struct CoroSLF *frame)
2074{
2075 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2076}
2077
2078static int
2079slf_check_join (pTHX_ struct CoroSLF *frame)
2080{
2081 struct coro *coro = (struct coro *)frame->data;
2082
2083 if (!coro->status)
2084 return 1;
2085
2086 frame->destroy = 0;
2087
2088 coro_push_av (aTHX_ coro->status, GIMME_V);
2089
2090 SvREFCNT_dec ((SV *)coro->hv);
2091
2092 return 0;
2093}
2094
2095static void
2096slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2097{
2098 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2099
2100 if (items > 1)
2101 croak ("join called with too many arguments");
2102
2103 if (coro->status)
2104 frame->prepare = prepare_nop;
2105 else
2106 {
2107 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2108 frame->prepare = prepare_schedule;
2109 }
2110
2111 frame->check = slf_check_join;
2112 frame->destroy = slf_destroy_join;
2113 frame->data = (void *)coro;
2114 SvREFCNT_inc (coro->hv);
2115}
2116
2117static void
2118coro_call_on_destroy (pTHX_ struct coro *coro)
2119{
2120 AV *od = coro->on_destroy;
2121
2122 if (!od)
2123 return;
2124
2125 coro->on_destroy = 0;
2126 sv_2mortal ((SV *)od);
2127
2128 while (AvFILLp (od) >= 0)
2129 {
2130 SV *cb = sv_2mortal (av_pop (od));
2131
2132 /* coro hv's (and only hv's at the moment) are supported as well */
2133 if (SvSTATEhv_p (aTHX_ cb))
2134 api_ready (aTHX_ cb);
2135 else
2136 {
2137 dSP; /* don't disturb outer sp */
2138 PUSHMARK (SP);
2139
2140 if (coro->status)
2141 {
2142 PUTBACK;
2143 coro_push_av (aTHX_ coro->status, G_ARRAY);
2144 SPAGAIN;
2145 }
2146
2147 PUTBACK;
2148 call_sv (cb, G_VOID | G_DISCARD);
2149 }
2150 }
2151}
2152
2153static void
2154coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2155{
2156 AV *av;
2157
2158 if (coro->status)
2159 {
2160 av = coro->status;
2161 av_clear (av);
2162 }
2163 else
2164 av = coro->status = newAV ();
2165
2166 /* items are actually not so common, so optimise for this case */
2167 if (items)
2168 {
2169 int i;
2170
2171 av_extend (av, items - 1);
2172
2173 for (i = 0; i < items; ++i)
2174 av_push (av, SvREFCNT_inc_NN (arg [i]));
2175 }
2176}
2177
2178static void
2179slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2180{
2181 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2182 api_ready (aTHX_ sv_manager);
2183
2184 frame->prepare = prepare_schedule;
2185 frame->check = slf_check_repeat;
2186
2187 /* as a minor optimisation, we could unwind all stacks here */
2188 /* but that puts extra pressure on pp_slf, and is not worth much */
2189 /*coro_unwind_stacks (aTHX);*/
2190}
2191
2192static void
2193slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2194{
2195 HV *coro_hv = (HV *)SvRV (coro_current);
2196
2197 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2198 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2199}
2200
2201static void
2202slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2203{
2204 HV *coro_hv;
2205 struct coro *coro;
2206
2207 if (items <= 0)
2208 croak ("Coro::cancel called without coro object,");
2209
2210 coro = SvSTATE (arg [0]);
2211 coro_hv = coro->hv;
2212
2213 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2214
2215 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2216 {
2217 /* coro currently busy cancelling something, so just notify it */
2218 coro->slf_frame.data = (void *)coro;
2219
2220 frame->prepare = prepare_nop;
2221 frame->check = slf_check_nop;
2222 }
2223 else if (coro_hv == (HV *)SvRV (coro_current))
2224 {
2225 /* cancelling the current coro is allowed, and equals terminate */
2226 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2227 }
2228 else
2229 {
2230 struct coro *self = SvSTATE_current;
2231
2232 /* otherwise we cancel directly, purely for speed reasons
2233 * unfortunately, this requires some magic trickery, as
2234 * somebody else could cancel us, so we have to fight the cancellation.
2235 * this is ugly, and hopefully fully worth the extra speed.
2236 * besides, I can't get the slow-but-safe version working...
2237 */
2238 slf_frame.data = 0;
2239 self->flags |= CF_NOCANCEL;
2240 coro_state_destroy (aTHX_ coro);
2241 self->flags &= ~CF_NOCANCEL;
2242
2243 if (slf_frame.data)
2244 {
2245 /* while we were busy we have been cancelled, so terminate */
2246 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2247 }
2248 else
2249 {
2250 frame->prepare = prepare_nop;
2251 frame->check = slf_check_nop;
2252 }
2253 }
2254}
2255
2256static int
2257slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2258{
2259 frame->prepare = 0;
2260 coro_unwind_stacks (aTHX);
2261
2262 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2263
2264 return 1;
2265}
2266
2267static int
2268safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2269{
2270 if (coro->cctx)
2271 croak ("coro inside C callback, unable to cancel at this time, caught");
2272
2273 if (coro->flags & CF_NEW)
2274 {
2275 coro_set_status (aTHX_ coro, arg, items);
2276 coro_state_destroy (aTHX_ coro);
2277 }
2278 else
2279 {
2280 if (!coro->slf_frame.prepare)
2281 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2282
2283 slf_destroy (aTHX_ coro);
2284
2285 coro_set_status (aTHX_ coro, arg, items);
2286 coro->slf_frame.prepare = prepare_nop;
2287 coro->slf_frame.check = slf_check_safe_cancel;
2288
2289 api_ready (aTHX_ (SV *)coro->hv);
2290 }
2291
2292 return 1;
2293}
2294
2295/*****************************************************************************/
2296/* async pool handler */
2297
2298static int
2299slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2300{
2301 HV *hv = (HV *)SvRV (coro_current);
2302 struct coro *coro = (struct coro *)frame->data;
2303
2304 if (!coro->invoke_cb)
2305 return 1; /* loop till we have invoke */
2306 else
2307 {
2308 hv_store (hv, "desc", sizeof ("desc") - 1,
2309 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2310
2311 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2312
2313 {
2314 dSP;
2315 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2316 PUTBACK;
2317 }
2318
2319 SvREFCNT_dec (GvAV (PL_defgv));
2320 GvAV (PL_defgv) = coro->invoke_av;
2321 coro->invoke_av = 0;
2322
2323 return 0;
2324 }
2325}
2326
2327static void
2328slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2329{
2330 HV *hv = (HV *)SvRV (coro_current);
2331 struct coro *coro = SvSTATE_hv ((SV *)hv);
2332
2333 if (ecb_expect_true (coro->saved_deffh))
2334 {
2335 /* subsequent iteration */
2336 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2337 coro->saved_deffh = 0;
2338
2339 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2340 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2341 {
2342 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2343 return;
2344 }
2345 else
2346 {
2347 av_clear (GvAV (PL_defgv));
2348 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2349
2350 coro->prio = 0;
2351
2352 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2353 api_trace (aTHX_ coro_current, 0);
2354
2355 frame->prepare = prepare_schedule;
2356 av_push (av_async_pool, SvREFCNT_inc (hv));
2357 }
2358 }
2359 else
2360 {
2361 /* first iteration, simply fall through */
2362 frame->prepare = prepare_nop;
2363 }
2364
2365 frame->check = slf_check_pool_handler;
2366 frame->data = (void *)coro;
2367}
2368
2369/*****************************************************************************/
2370/* rouse callback */
2371
2372#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2373
2374static void
2375coro_rouse_callback (pTHX_ CV *cv)
2376{
2377 dXSARGS;
2378 SV *data = (SV *)S_GENSUB_ARG;
2379
2380 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2381 {
2382 /* first call, set args */
2383 SV *coro = SvRV (data);
2384 AV *av = newAV ();
2385
2386 SvRV_set (data, (SV *)av);
2387
2388 /* better take a full copy of the arguments */
2389 while (items--)
2390 av_store (av, items, newSVsv (ST (items)));
2391
2392 api_ready (aTHX_ coro);
2393 SvREFCNT_dec (coro);
2394 }
2395
2396 XSRETURN_EMPTY;
2397}
2398
2399static int
2400slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2401{
2402 SV *data = (SV *)frame->data;
2403
2404 if (CORO_THROW)
2405 return 0;
2406
2407 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2408 return 1;
2409
2410 /* now push all results on the stack */
2411 {
2412 dSP;
2413 AV *av = (AV *)SvRV (data);
2414 int i;
2415
2416 EXTEND (SP, AvFILLp (av) + 1);
2417 for (i = 0; i <= AvFILLp (av); ++i)
2418 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2419
2420 /* we have stolen the elements, so set length to zero and free */
2421 AvFILLp (av) = -1;
2422 av_undef (av);
2423
2424 PUTBACK;
2425 }
2426
2427 return 0;
2428}
2429
2430static void
2431slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2432{
2433 SV *cb;
2434
2435 if (items)
2436 cb = arg [0];
2437 else
2438 {
2439 struct coro *coro = SvSTATE_current;
2440
2441 if (!coro->rouse_cb)
2442 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2443
2444 cb = sv_2mortal (coro->rouse_cb);
2445 coro->rouse_cb = 0;
2446 }
2447
2448 if (!SvROK (cb)
2449 || SvTYPE (SvRV (cb)) != SVt_PVCV
2450 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2451 croak ("Coro::rouse_wait called with illegal callback argument,");
2452
2453 {
2454 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2455 SV *data = (SV *)S_GENSUB_ARG;
2456
2457 frame->data = (void *)data;
2458 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2459 frame->check = slf_check_rouse_wait;
2460 }
2461}
2462
2463static SV *
2464coro_new_rouse_cb (pTHX)
2465{
2466 HV *hv = (HV *)SvRV (coro_current);
2467 struct coro *coro = SvSTATE_hv (hv);
2468 SV *data = newRV_inc ((SV *)hv);
2469 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2470
2471 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2472 SvREFCNT_dec (data); /* magicext increases the refcount */
2473
2474 SvREFCNT_dec (coro->rouse_cb);
2475 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2476
2477 return cb;
1704} 2478}
1705 2479
1706/*****************************************************************************/ 2480/*****************************************************************************/
1707/* schedule-like-function opcode (SLF) */ 2481/* schedule-like-function opcode (SLF) */
1708 2482
… …
1758 frame->prepare = prepare_schedule; 2532 frame->prepare = prepare_schedule;
1759 frame->check = slf_check_nop; 2533 frame->check = slf_check_nop;
1760} 2534}
1761 2535
1762static void 2536static void
2537slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2538{
2539 struct coro *next = (struct coro *)slf_frame.data;
2540
2541 SvREFCNT_inc_NN (next->hv);
2542 prepare_schedule_to (aTHX_ ta, next);
2543}
2544
2545static void
2546slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2547{
2548 if (!items)
2549 croak ("Coro::schedule_to expects a coroutine argument, caught");
2550
2551 frame->data = (void *)SvSTATE (arg [0]);
2552 frame->prepare = slf_prepare_schedule_to;
2553 frame->check = slf_check_nop;
2554}
2555
2556static void
2557slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2558{
2559 api_ready (aTHX_ SvRV (coro_current));
2560
2561 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2562}
2563
2564static void
1763slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2565slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1764{ 2566{
1765 frame->prepare = prepare_cede; 2567 frame->prepare = prepare_cede;
1766 frame->check = slf_check_nop; 2568 frame->check = slf_check_nop;
1767} 2569}
… …
1769static void 2571static void
1770slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2572slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1771{ 2573{
1772 frame->prepare = prepare_cede_notself; 2574 frame->prepare = prepare_cede_notself;
1773 frame->check = slf_check_nop; 2575 frame->check = slf_check_nop;
2576}
2577
2578/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2579static void
2580slf_destroy (pTHX_ struct coro *coro)
2581{
2582 /* this callback is reserved for slf functions needing to do cleanup */
2583 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2584 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2585
2586 /*
2587 * The on_destroy above most likely is from an SLF call.
2588 * Since by definition the SLF call will not finish when we destroy
2589 * the coro, we will have to force-finish it here, otherwise
2590 * cleanup functions cannot call SLF functions.
2591 */
2592 coro->slf_frame.prepare = 0;
1774} 2593}
1775 2594
1776/* 2595/*
1777 * these not obviously related functions are all rolled into one 2596 * these not obviously related functions are all rolled into one
1778 * function to increase chances that they all will call transfer with the same 2597 * function to increase chances that they all will call transfer with the same
… …
1785 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2604 I32 checkmark; /* mark SP to see how many elements check has pushed */
1786 2605
1787 /* set up the slf frame, unless it has already been set-up */ 2606 /* set up the slf frame, unless it has already been set-up */
1788 /* the latter happens when a new coro has been started */ 2607 /* the latter happens when a new coro has been started */
1789 /* or when a new cctx was attached to an existing coroutine */ 2608 /* or when a new cctx was attached to an existing coroutine */
1790 if (expect_true (!slf_frame.prepare)) 2609 if (ecb_expect_true (!slf_frame.prepare))
1791 { 2610 {
1792 /* first iteration */ 2611 /* first iteration */
1793 dSP; 2612 dSP;
1794 SV **arg = PL_stack_base + TOPMARK + 1; 2613 SV **arg = PL_stack_base + TOPMARK + 1;
1795 int items = SP - arg; /* args without function object */ 2614 int items = SP - arg; /* args without function object */
… …
1835 } 2654 }
1836 while (slf_frame.check (aTHX_ &slf_frame)); 2655 while (slf_frame.check (aTHX_ &slf_frame));
1837 2656
1838 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2657 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1839 2658
2659 /* exception handling */
2660 if (ecb_expect_false (CORO_THROW))
2661 {
2662 SV *exception = sv_2mortal (CORO_THROW);
2663
2664 CORO_THROW = 0;
2665 sv_setsv (ERRSV, exception);
2666 croak (0);
2667 }
2668
1840 /* return value handling - mostly like entersub */ 2669 /* return value handling - mostly like entersub */
1841 /* make sure we put something on the stack in scalar context */ 2670 /* make sure we put something on the stack in scalar context */
1842 if (GIMME_V == G_SCALAR) 2671 if (GIMME_V == G_SCALAR
2672 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
1843 { 2673 {
1844 dSP; 2674 dSP;
1845 SV **bot = PL_stack_base + checkmark; 2675 SV **bot = PL_stack_base + checkmark;
1846 2676
1847 if (sp == bot) /* too few, push undef */ 2677 if (sp == bot) /* too few, push undef */
1848 bot [1] = &PL_sv_undef; 2678 bot [1] = &PL_sv_undef;
1849 else if (sp != bot + 1) /* too many, take last one */ 2679 else /* too many, take last one */
1850 bot [1] = *sp; 2680 bot [1] = *sp;
1851 2681
1852 SP = bot + 1; 2682 SP = bot + 1;
1853 2683
1854 PUTBACK; 2684 PUTBACK;
1855 }
1856
1857 /* exception handling */
1858 if (expect_false (coro_throw))
1859 {
1860 SV *exception = sv_2mortal (coro_throw);
1861
1862 coro_throw = 0;
1863 sv_setsv (ERRSV, exception);
1864 croak (0);
1865 } 2685 }
1866 2686
1867 return NORMAL; 2687 return NORMAL;
1868} 2688}
1869 2689
… …
1897 if (PL_op->op_flags & OPf_STACKED) 2717 if (PL_op->op_flags & OPf_STACKED)
1898 { 2718 {
1899 if (items > slf_arga) 2719 if (items > slf_arga)
1900 { 2720 {
1901 slf_arga = items; 2721 slf_arga = items;
1902 free (slf_argv); 2722 Safefree (slf_argv);
1903 slf_argv = malloc (slf_arga * sizeof (SV *)); 2723 New (0, slf_argv, slf_arga, SV *);
1904 } 2724 }
1905 2725
1906 slf_argc = items; 2726 slf_argc = items;
1907 2727
1908 for (i = 0; i < items; ++i) 2728 for (i = 0; i < items; ++i)
… …
1910 } 2730 }
1911 else 2731 else
1912 slf_argc = 0; 2732 slf_argc = 0;
1913 2733
1914 PL_op->op_ppaddr = pp_slf; 2734 PL_op->op_ppaddr = pp_slf;
1915 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2735 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1916 2736
1917 PL_op = (OP *)&slf_restore; 2737 PL_op = (OP *)&slf_restore;
2738}
2739
2740/*****************************************************************************/
2741/* dynamic wind */
2742
2743static void
2744on_enterleave_call (pTHX_ SV *cb)
2745{
2746 dSP;
2747
2748 PUSHSTACK;
2749
2750 PUSHMARK (SP);
2751 PUTBACK;
2752 call_sv (cb, G_VOID | G_DISCARD);
2753 SPAGAIN;
2754
2755 POPSTACK;
2756}
2757
2758static SV *
2759coro_avp_pop_and_free (pTHX_ AV **avp)
2760{
2761 AV *av = *avp;
2762 SV *res = av_pop (av);
2763
2764 if (AvFILLp (av) < 0)
2765 {
2766 *avp = 0;
2767 SvREFCNT_dec (av);
2768 }
2769
2770 return res;
2771}
2772
2773static void
2774coro_pop_on_enter (pTHX_ void *coro)
2775{
2776 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2777 SvREFCNT_dec (cb);
2778}
2779
2780static void
2781coro_pop_on_leave (pTHX_ void *coro)
2782{
2783 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2784 on_enterleave_call (aTHX_ sv_2mortal (cb));
1918} 2785}
1919 2786
1920/*****************************************************************************/ 2787/*****************************************************************************/
1921/* PerlIO::cede */ 2788/* PerlIO::cede */
1922 2789
… …
1924{ 2791{
1925 PerlIOBuf base; 2792 PerlIOBuf base;
1926 NV next, every; 2793 NV next, every;
1927} PerlIOCede; 2794} PerlIOCede;
1928 2795
1929static IV 2796static IV ecb_cold
1930PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2797PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1931{ 2798{
1932 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2799 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1933 2800
1934 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2801 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1935 self->next = nvtime () + self->every; 2802 self->next = nvtime () + self->every;
1936 2803
1937 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2804 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1938} 2805}
1939 2806
1940static SV * 2807static SV * ecb_cold
1941PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2808PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1942{ 2809{
1943 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2810 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1944 2811
1945 return newSVnv (self->every); 2812 return newSVnv (self->every);
… …
1991 PerlIOBuf_get_cnt, 2858 PerlIOBuf_get_cnt,
1992 PerlIOBuf_set_ptrcnt, 2859 PerlIOBuf_set_ptrcnt,
1993}; 2860};
1994 2861
1995/*****************************************************************************/ 2862/*****************************************************************************/
2863/* Coro::Semaphore & Coro::Signal */
2864
2865static SV *
2866coro_waitarray_new (pTHX_ int count)
2867{
2868 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2869 AV *av = newAV ();
2870 SV **ary;
2871
2872 /* unfortunately, building manually saves memory */
2873 Newx (ary, 2, SV *);
2874 AvALLOC (av) = ary;
2875#if PERL_VERSION_ATLEAST (5,10,0)
2876 AvARRAY (av) = ary;
2877#else
2878 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2879 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2880 SvPVX ((SV *)av) = (char *)ary;
2881#endif
2882 AvMAX (av) = 1;
2883 AvFILLp (av) = 0;
2884 ary [0] = newSViv (count);
2885
2886 return newRV_noinc ((SV *)av);
2887}
2888
1996/* Coro::Semaphore */ 2889/* semaphore */
1997 2890
1998static void 2891static void
1999coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2892coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2000{ 2893{
2001 SV *count_sv = AvARRAY (av)[0]; 2894 SV *count_sv = AvARRAY (av)[0];
… …
2013 AvARRAY (av)[0] = AvARRAY (av)[1]; 2906 AvARRAY (av)[0] = AvARRAY (av)[1];
2014 AvARRAY (av)[1] = count_sv; 2907 AvARRAY (av)[1] = count_sv;
2015 cb = av_shift (av); 2908 cb = av_shift (av);
2016 2909
2017 if (SvOBJECT (cb)) 2910 if (SvOBJECT (cb))
2911 {
2018 api_ready (aTHX_ cb); 2912 api_ready (aTHX_ cb);
2019 else 2913 --count;
2020 croak ("callbacks not yet supported"); 2914 }
2915 else if (SvTYPE (cb) == SVt_PVCV)
2916 {
2917 dSP;
2918 PUSHMARK (SP);
2919 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2920 PUTBACK;
2921 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2922 }
2021 2923
2022 SvREFCNT_dec (cb); 2924 SvREFCNT_dec (cb);
2023
2024 --count;
2025 } 2925 }
2026} 2926}
2027 2927
2028static void 2928static void
2029coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2929coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2030{ 2930{
2031 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2931 /* call $sem->adjust (0) to possibly wake up some other waiters */
2032 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2932 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2033} 2933}
2034 2934
2035static int 2935static int
2036slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2936slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2037{ 2937{
2038 AV *av = (AV *)frame->data; 2938 AV *av = (AV *)frame->data;
2039 SV *count_sv = AvARRAY (av)[0]; 2939 SV *count_sv = AvARRAY (av)[0];
2940 SV *coro_hv = SvRV (coro_current);
2040 2941
2942 /* if we are about to throw, don't actually acquire the lock, just throw */
2943 if (CORO_THROW)
2944 return 0;
2041 if (SvIVX (count_sv) > 0) 2945 else if (SvIVX (count_sv) > 0)
2042 { 2946 {
2043 SvSTATE_current->on_destroy = 0; 2947 frame->destroy = 0;
2948
2949 if (acquire)
2044 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2950 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2951 else
2952 coro_semaphore_adjust (aTHX_ av, 0);
2953
2045 return 0; 2954 return 0;
2046 } 2955 }
2047 else 2956 else
2048 { 2957 {
2049 int i; 2958 int i;
2050 /* if we were woken up but can't down, we look through the whole */ 2959 /* if we were woken up but can't down, we look through the whole */
2051 /* waiters list and only add us if we aren't in there already */ 2960 /* waiters list and only add us if we aren't in there already */
2052 /* this avoids some degenerate memory usage cases */ 2961 /* this avoids some degenerate memory usage cases */
2053 2962 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2054 for (i = 1; i <= AvFILLp (av); ++i)
2055 if (AvARRAY (av)[i] == SvRV (coro_current)) 2963 if (AvARRAY (av)[i] == coro_hv)
2056 return 1; 2964 return 1;
2057 2965
2058 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2966 av_push (av, SvREFCNT_inc (coro_hv));
2059 return 1; 2967 return 1;
2060 } 2968 }
2061} 2969}
2062 2970
2063static void 2971static int
2972slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2973{
2974 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2975}
2976
2977static int
2978slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2979{
2980 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2981}
2982
2983static void
2064slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2984slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2065{ 2985{
2066 AV *av = (AV *)SvRV (arg [0]); 2986 AV *av = (AV *)SvRV (arg [0]);
2067 2987
2068 if (SvIVX (AvARRAY (av)[0]) > 0) 2988 if (SvIVX (AvARRAY (av)[0]) > 0)
2069 { 2989 {
2070 frame->data = (void *)av; 2990 frame->data = (void *)av;
2071 frame->prepare = prepare_nop; 2991 frame->prepare = prepare_nop;
2072 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2073 } 2992 }
2074 else 2993 else
2075 { 2994 {
2076 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2995 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2077 2996
2078 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2997 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2079 frame->prepare = prepare_schedule; 2998 frame->prepare = prepare_schedule;
2080
2081 /* to avoid race conditions when a woken-up coro gets terminated */ 2999 /* to avoid race conditions when a woken-up coro gets terminated */
2082 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3000 /* we arrange for a temporary on_destroy that calls adjust (0) */
2083 assert (!SvSTATE_current->on_destroy);//D
2084 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3001 frame->destroy = coro_semaphore_destroy;
2085 } 3002 }
3003}
2086 3004
3005static void
3006slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3007{
3008 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2087 frame->check = slf_check_semaphore_down; 3009 frame->check = slf_check_semaphore_down;
2088
2089} 3010}
2090 3011
2091/*****************************************************************************/ 3012static void
2092/* gensub: simple closure generation utility */ 3013slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2095
2096/* create a closure from XS, returns a code reference */
2097/* the arg can be accessed via GENSUB_ARG from the callback */
2098/* the callback must use dXSARGS/XSRETURN */
2099static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101{ 3014{
2102 CV *cv = (CV *)newSV (0); 3015 if (items >= 2)
3016 {
3017 /* callback form */
3018 AV *av = (AV *)SvRV (arg [0]);
3019 SV *cb_cv = s_get_cv_croak (arg [1]);
2103 3020
2104 sv_upgrade ((SV *)cv, SVt_PVCV); 3021 av_push (av, SvREFCNT_inc_NN (cb_cv));
2105 3022
2106 CvANON_on (cv); 3023 if (SvIVX (AvARRAY (av)[0]) > 0)
2107 CvISXSUB_on (cv); 3024 coro_semaphore_adjust (aTHX_ av, 0);
2108 CvXSUB (cv) = xsub;
2109 GENSUB_ARG = arg;
2110 3025
2111 return newRV_noinc ((SV *)cv); 3026 frame->prepare = prepare_nop;
3027 frame->check = slf_check_nop;
3028 }
3029 else
3030 {
3031 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3032 frame->check = slf_check_semaphore_wait;
3033 }
3034}
3035
3036/* signal */
3037
3038static void
3039coro_signal_wake (pTHX_ AV *av, int count)
3040{
3041 SvIVX (AvARRAY (av)[0]) = 0;
3042
3043 /* now signal count waiters */
3044 while (count > 0 && AvFILLp (av) > 0)
3045 {
3046 SV *cb;
3047
3048 /* swap first two elements so we can shift a waiter */
3049 cb = AvARRAY (av)[0];
3050 AvARRAY (av)[0] = AvARRAY (av)[1];
3051 AvARRAY (av)[1] = cb;
3052
3053 cb = av_shift (av);
3054
3055 if (SvTYPE (cb) == SVt_PVCV)
3056 {
3057 dSP;
3058 PUSHMARK (SP);
3059 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3060 PUTBACK;
3061 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3062 }
3063 else
3064 {
3065 api_ready (aTHX_ cb);
3066 sv_setiv (cb, 0); /* signal waiter */
3067 }
3068
3069 SvREFCNT_dec (cb);
3070
3071 --count;
3072 }
3073}
3074
3075static int
3076slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3077{
3078 /* if we are about to throw, also stop waiting */
3079 return SvROK ((SV *)frame->data) && !CORO_THROW;
3080}
3081
3082static void
3083slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3084{
3085 AV *av = (AV *)SvRV (arg [0]);
3086
3087 if (items >= 2)
3088 {
3089 SV *cb_cv = s_get_cv_croak (arg [1]);
3090 av_push (av, SvREFCNT_inc_NN (cb_cv));
3091
3092 if (SvIVX (AvARRAY (av)[0]))
3093 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3094
3095 frame->prepare = prepare_nop;
3096 frame->check = slf_check_nop;
3097 }
3098 else if (SvIVX (AvARRAY (av)[0]))
3099 {
3100 SvIVX (AvARRAY (av)[0]) = 0;
3101 frame->prepare = prepare_nop;
3102 frame->check = slf_check_nop;
3103 }
3104 else
3105 {
3106 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3107
3108 av_push (av, waiter);
3109
3110 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3111 frame->prepare = prepare_schedule;
3112 frame->check = slf_check_signal_wait;
3113 }
2112} 3114}
2113 3115
2114/*****************************************************************************/ 3116/*****************************************************************************/
2115/* Coro::AIO */ 3117/* Coro::AIO */
2116 3118
… …
2127 3129
2128static void 3130static void
2129coro_aio_callback (pTHX_ CV *cv) 3131coro_aio_callback (pTHX_ CV *cv)
2130{ 3132{
2131 dXSARGS; 3133 dXSARGS;
2132 AV *state = (AV *)GENSUB_ARG; 3134 AV *state = (AV *)S_GENSUB_ARG;
2133 SV *coro = av_pop (state); 3135 SV *coro = av_pop (state);
2134 SV *data_sv = newSV (sizeof (struct io_state)); 3136 SV *data_sv = newSV (sizeof (struct io_state));
2135 3137
2136 av_extend (state, items); 3138 av_extend (state, items - 1);
2137 3139
2138 sv_upgrade (data_sv, SVt_PV); 3140 sv_upgrade (data_sv, SVt_PV);
2139 SvCUR_set (data_sv, sizeof (struct io_state)); 3141 SvCUR_set (data_sv, sizeof (struct io_state));
2140 SvPOK_only (data_sv); 3142 SvPOK_only (data_sv);
2141 3143
… …
2166static int 3168static int
2167slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3169slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2168{ 3170{
2169 AV *state = (AV *)frame->data; 3171 AV *state = (AV *)frame->data;
2170 3172
3173 /* if we are about to throw, return early */
3174 /* this does not cancel the aio request, but at least */
3175 /* it quickly returns */
3176 if (CORO_THROW)
3177 return 0;
3178
2171 /* one element that is an RV? repeat! */ 3179 /* one element that is an RV? repeat! */
2172 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3180 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2173 return 1; 3181 return 1;
2174 3182
2175 /* restore status */ 3183 /* restore status */
2176 { 3184 {
2177 SV *data_sv = av_pop (state); 3185 SV *data_sv = av_pop (state);
… …
2216 dSP; 3224 dSP;
2217 3225
2218 static SV *prio_cv; 3226 static SV *prio_cv;
2219 static SV *prio_sv; 3227 static SV *prio_sv;
2220 3228
2221 if (expect_false (!prio_cv)) 3229 if (ecb_expect_false (!prio_cv))
2222 { 3230 {
2223 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3231 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2224 prio_sv = newSViv (0); 3232 prio_sv = newSViv (0);
2225 } 3233 }
2226 3234
… …
2245 3253
2246 for (i = 0; i < items; ++i) 3254 for (i = 0; i < items; ++i)
2247 PUSHs (arg [i]); 3255 PUSHs (arg [i]);
2248 3256
2249 /* now push the callback closure */ 3257 /* now push the callback closure */
2250 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3258 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2251 3259
2252 /* now call the AIO function - we assume our request is uncancelable */ 3260 /* now call the AIO function - we assume our request is uncancelable */
2253 PUTBACK; 3261 PUTBACK;
2254 call_sv ((SV *)req, G_VOID | G_DISCARD); 3262 call_sv ((SV *)req, G_VOID | G_DISCARD);
2255 } 3263 }
2256 3264
2257 /* now that the requets is going, we loop toll we have a result */ 3265 /* now that the request is going, we loop till we have a result */
2258 frame->data = (void *)state; 3266 frame->data = (void *)state;
2259 frame->prepare = prepare_schedule; 3267 frame->prepare = prepare_schedule;
2260 frame->check = slf_check_aio_req; 3268 frame->check = slf_check_aio_req;
2261} 3269}
2262 3270
… …
2269 3277
2270 XSRETURN_EMPTY; 3278 XSRETURN_EMPTY;
2271} 3279}
2272 3280
2273/*****************************************************************************/ 3281/*****************************************************************************/
3282
3283#if CORO_CLONE
3284# include "clone.c"
3285#endif
3286
3287/*****************************************************************************/
3288
3289static SV *
3290coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3291{
3292 SV *coro_sv;
3293 struct coro *coro;
3294 MAGIC *mg;
3295 HV *hv;
3296 SV *cb;
3297 int i;
3298
3299 if (argc > 0)
3300 {
3301 cb = s_get_cv_croak (argv [0]);
3302
3303 if (!is_coro)
3304 {
3305 if (CvISXSUB (cb))
3306 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3307
3308 if (!CvROOT (cb))
3309 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3310 }
3311 }
3312
3313 Newz (0, coro, 1, struct coro);
3314 coro->args = newAV ();
3315 coro->flags = CF_NEW;
3316
3317 if (coro_first) coro_first->prev = coro;
3318 coro->next = coro_first;
3319 coro_first = coro;
3320
3321 coro->hv = hv = newHV ();
3322 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3323 mg->mg_flags |= MGf_DUP;
3324 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3325
3326 if (argc > 0)
3327 {
3328 av_extend (coro->args, argc + is_coro - 1);
3329
3330 if (is_coro)
3331 {
3332 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3333 cb = (SV *)cv_coro_run;
3334 }
3335
3336 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3337
3338 for (i = 1; i < argc; i++)
3339 av_push (coro->args, newSVsv (argv [i]));
3340 }
3341
3342 return coro_sv;
3343}
3344
3345#ifndef __cplusplus
3346ecb_cold XS(boot_Coro__State);
3347#endif
3348
3349#if CORO_JIT
3350
3351static void ecb_noinline ecb_cold
3352pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3353{
3354 dSP;
3355 AV *av = newAV ();
3356
3357 av_store (av, 3, newSVuv (d));
3358 av_store (av, 2, newSVuv (c));
3359 av_store (av, 1, newSVuv (b));
3360 av_store (av, 0, newSVuv (a));
3361
3362 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3363
3364 PUTBACK;
3365}
3366
3367static void ecb_noinline ecb_cold
3368jit_init (pTHX)
3369{
3370 dSP;
3371 SV *load, *save;
3372 char *map_base;
3373 char *load_ptr, *save_ptr;
3374 STRLEN load_len, save_len, map_len;
3375 int count;
3376
3377 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3378
3379 PUSHMARK (SP);
3380 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3381 #include "state.h"
3382 count = call_pv ("Coro::State::_jit", G_ARRAY);
3383 SPAGAIN;
3384
3385 save = POPs; save_ptr = SvPVbyte (save, save_len);
3386 load = POPs; load_ptr = SvPVbyte (load, load_len);
3387
3388 map_len = load_len + save_len + 16;
3389
3390 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3391
3392 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3393
3394 load_perl_slots = (load_save_perl_slots_type)map_base;
3395 memcpy (map_base, load_ptr, load_len);
3396
3397 map_base += (load_len + 15) & ~15;
3398
3399 save_perl_slots = (load_save_perl_slots_type)map_base;
3400 memcpy (map_base, save_ptr, save_len);
3401
3402 /* we are good citizens and try to make the page read-only, so the evil evil */
3403 /* hackers might have it a bit more difficult */
3404 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3405
3406 PUTBACK;
3407 eval_pv ("undef &Coro::State::_jit", 1);
3408}
3409
3410#endif
2274 3411
2275MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3412MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2276 3413
2277PROTOTYPES: DISABLE 3414PROTOTYPES: DISABLE
2278 3415
… …
2281#ifdef USE_ITHREADS 3418#ifdef USE_ITHREADS
2282# if CORO_PTHREAD 3419# if CORO_PTHREAD
2283 coro_thx = PERL_GET_CONTEXT; 3420 coro_thx = PERL_GET_CONTEXT;
2284# endif 3421# endif
2285#endif 3422#endif
2286 BOOT_PAGESIZE; 3423 /* perl defines these to check for existance first, but why it doesn't */
3424 /* just create them one at init time is not clear to me, except for */
3425 /* programs trying to delete them, but... */
3426 /* anyway, we declare this as invalid and make sure they are initialised here */
3427 DEFSV;
3428 ERRSV;
3429
3430 cctx_current = cctx_new_empty ();
2287 3431
2288 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3432 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2289 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3433 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2290 3434
2291 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3435 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2311 3455
2312 { 3456 {
2313 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3457 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2314 3458
2315 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3459 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2316 hv_store_ent (PL_custom_op_names, slf, 3460 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2317 newSVpv ("coro_slf", 0), 0);
2318 3461
2319 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3462 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2320 hv_store_ent (PL_custom_op_descs, slf, 3463 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2321 newSVpv ("coro schedule like function", 0), 0);
2322 } 3464 }
2323 3465
2324 coroapi.ver = CORO_API_VERSION; 3466 coroapi.ver = CORO_API_VERSION;
2325 coroapi.rev = CORO_API_REVISION; 3467 coroapi.rev = CORO_API_REVISION;
2326 3468
… …
2331 coroapi.prepare_nop = prepare_nop; 3473 coroapi.prepare_nop = prepare_nop;
2332 coroapi.prepare_schedule = prepare_schedule; 3474 coroapi.prepare_schedule = prepare_schedule;
2333 coroapi.prepare_cede = prepare_cede; 3475 coroapi.prepare_cede = prepare_cede;
2334 coroapi.prepare_cede_notself = prepare_cede_notself; 3476 coroapi.prepare_cede_notself = prepare_cede_notself;
2335 3477
2336 { 3478 time_init (aTHX);
2337 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2338 3479
2339 if (!svp) croak ("Time::HiRes is required");
2340 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2341
2342 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2343 }
2344
2345 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3480 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3481#if CORO_JIT
3482 PUTBACK;
3483 jit_init (aTHX);
3484 SPAGAIN;
3485#endif
2346} 3486}
2347 3487
2348SV * 3488SV *
2349new (char *klass, ...) 3489new (SV *klass, ...)
3490 ALIAS:
3491 Coro::new = 1
2350 CODE: 3492 CODE:
2351{ 3493 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2352 struct coro *coro; 3494 OUTPUT:
2353 MAGIC *mg;
2354 HV *hv;
2355 int i;
2356
2357 Newz (0, coro, 1, struct coro);
2358 coro->args = newAV ();
2359 coro->flags = CF_NEW;
2360
2361 if (coro_first) coro_first->prev = coro;
2362 coro->next = coro_first;
2363 coro_first = coro;
2364
2365 coro->hv = hv = newHV ();
2366 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2367 mg->mg_flags |= MGf_DUP;
2368 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2369
2370 av_extend (coro->args, items - 1);
2371 for (i = 1; i < items; i++)
2372 av_push (coro->args, newSVsv (ST (i)));
2373}
2374 OUTPUT:
2375 RETVAL 3495 RETVAL
2376 3496
2377void 3497void
2378transfer (...) 3498transfer (...)
2379 PROTOTYPE: $$ 3499 PROTOTYPE: $$
2380 CODE: 3500 CODE:
2381 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3501 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2382 3502
2383bool 3503SV *
2384_destroy (SV *coro_sv) 3504clone (Coro::State coro)
2385 CODE: 3505 CODE:
2386 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3506{
3507#if CORO_CLONE
3508 struct coro *ncoro = coro_clone (aTHX_ coro);
3509 MAGIC *mg;
3510 /* TODO: too much duplication */
3511 ncoro->hv = newHV ();
3512 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3513 mg->mg_flags |= MGf_DUP;
3514 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3515#else
3516 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3517#endif
3518}
2387 OUTPUT: 3519 OUTPUT:
2388 RETVAL 3520 RETVAL
2389
2390void
2391_exit (int code)
2392 PROTOTYPE: $
2393 CODE:
2394 _exit (code);
2395 3521
2396int 3522int
2397cctx_stacksize (int new_stacksize = 0) 3523cctx_stacksize (int new_stacksize = 0)
2398 PROTOTYPE: ;$ 3524 PROTOTYPE: ;$
2399 CODE: 3525 CODE:
… …
2435void 3561void
2436list () 3562list ()
2437 PROTOTYPE: 3563 PROTOTYPE:
2438 PPCODE: 3564 PPCODE:
2439{ 3565{
2440 struct coro *coro; 3566 struct coro *coro;
2441 for (coro = coro_first; coro; coro = coro->next) 3567 for (coro = coro_first; coro; coro = coro->next)
2442 if (coro->hv) 3568 if (coro->hv)
2443 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3569 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2444} 3570}
2445 3571
… …
2449 eval = 1 3575 eval = 1
2450 CODE: 3576 CODE:
2451{ 3577{
2452 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3578 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2453 { 3579 {
2454 struct coro temp; 3580 struct coro *current = SvSTATE_current;
3581 struct CoroSLF slf_save;
2455 3582
2456 if (!(coro->flags & CF_RUNNING)) 3583 if (current != coro)
2457 { 3584 {
2458 PUTBACK; 3585 PUTBACK;
2459 save_perl (aTHX_ &temp); 3586 save_perl (aTHX_ current);
2460 load_perl (aTHX_ coro); 3587 load_perl (aTHX_ coro);
3588 /* the coro is most likely in an active SLF call.
3589 * while not strictly required (the code we execute is
3590 * not allowed to call any SLF functions), it's cleaner
3591 * to reinitialise the slf_frame and restore it later.
3592 * This might one day allow us to actually do SLF calls
3593 * from code executed here.
3594 */
3595 slf_save = slf_frame;
3596 slf_frame.prepare = 0;
3597 SPAGAIN;
2461 } 3598 }
2462 3599
2463 {
2464 dSP;
2465 ENTER;
2466 SAVETMPS;
2467 PUTBACK;
2468 PUSHSTACK; 3600 PUSHSTACK;
3601
2469 PUSHMARK (SP); 3602 PUSHMARK (SP);
3603 PUTBACK;
2470 3604
2471 if (ix) 3605 if (ix)
2472 eval_sv (coderef, 0); 3606 eval_sv (coderef, 0);
2473 else 3607 else
2474 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3608 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2475 3609
2476 POPSTACK; 3610 POPSTACK;
2477 SPAGAIN; 3611 SPAGAIN;
2478 FREETMPS;
2479 LEAVE;
2480 PUTBACK;
2481 }
2482 3612
2483 if (!(coro->flags & CF_RUNNING)) 3613 if (current != coro)
2484 { 3614 {
3615 PUTBACK;
3616 slf_frame = slf_save;
2485 save_perl (aTHX_ coro); 3617 save_perl (aTHX_ coro);
2486 load_perl (aTHX_ &temp); 3618 load_perl (aTHX_ current);
2487 SPAGAIN; 3619 SPAGAIN;
2488 } 3620 }
2489 } 3621 }
2490} 3622}
2491 3623
… …
2494 PROTOTYPE: $ 3626 PROTOTYPE: $
2495 ALIAS: 3627 ALIAS:
2496 is_ready = CF_READY 3628 is_ready = CF_READY
2497 is_running = CF_RUNNING 3629 is_running = CF_RUNNING
2498 is_new = CF_NEW 3630 is_new = CF_NEW
2499 is_destroyed = CF_DESTROYED 3631 is_destroyed = CF_ZOMBIE
3632 is_zombie = CF_ZOMBIE
3633 is_suspended = CF_SUSPENDED
2500 CODE: 3634 CODE:
2501 RETVAL = boolSV (coro->flags & ix); 3635 RETVAL = boolSV (coro->flags & ix);
2502 OUTPUT: 3636 OUTPUT:
2503 RETVAL 3637 RETVAL
2504 3638
2505void 3639void
2506throw (Coro::State self, SV *throw = &PL_sv_undef) 3640throw (SV *self, SV *exception = &PL_sv_undef)
2507 PROTOTYPE: $;$ 3641 PROTOTYPE: $;$
2508 CODE: 3642 CODE:
2509{ 3643{
3644 struct coro *coro = SvSTATE (self);
2510 struct coro *current = SvSTATE_current; 3645 struct coro *current = SvSTATE_current;
2511 SV **throwp = self == current ? &coro_throw : &self->throw; 3646 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2512 SvREFCNT_dec (*throwp); 3647 SvREFCNT_dec (*exceptionp);
2513 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3648 SvGETMAGIC (exception);
3649 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3650
3651 api_ready (aTHX_ self);
2514} 3652}
2515 3653
2516void 3654void
2517api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3655api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2518 PROTOTYPE: $;$ 3656 PROTOTYPE: $;$
… …
2520 3658
2521SV * 3659SV *
2522has_cctx (Coro::State coro) 3660has_cctx (Coro::State coro)
2523 PROTOTYPE: $ 3661 PROTOTYPE: $
2524 CODE: 3662 CODE:
2525 RETVAL = boolSV (!!coro->cctx); 3663 /* maybe manage the running flag differently */
3664 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2526 OUTPUT: 3665 OUTPUT:
2527 RETVAL 3666 RETVAL
2528 3667
2529int 3668int
2530is_traced (Coro::State coro) 3669is_traced (Coro::State coro)
… …
2550 3689
2551void 3690void
2552force_cctx () 3691force_cctx ()
2553 PROTOTYPE: 3692 PROTOTYPE:
2554 CODE: 3693 CODE:
2555 SvSTATE_current->cctx->idle_sp = 0; 3694 cctx_current->idle_sp = 0;
2556 3695
2557void 3696void
2558swap_defsv (Coro::State self) 3697swap_defsv (Coro::State self)
2559 PROTOTYPE: $ 3698 PROTOTYPE: $
2560 ALIAS: 3699 ALIAS:
… …
2568 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3707 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2569 3708
2570 SV *tmp = *src; *src = *dst; *dst = tmp; 3709 SV *tmp = *src; *src = *dst; *dst = tmp;
2571 } 3710 }
2572 3711
3712void
3713cancel (Coro::State self)
3714 CODE:
3715 coro_state_destroy (aTHX_ self);
3716
3717SV *
3718enable_times (int enabled = enable_times)
3719 CODE:
3720{
3721 RETVAL = boolSV (enable_times);
3722
3723 if (enabled != enable_times)
3724 {
3725 enable_times = enabled;
3726
3727 coro_times_update ();
3728 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3729 }
3730}
3731 OUTPUT:
3732 RETVAL
3733
3734void
3735times (Coro::State self)
3736 PPCODE:
3737{
3738 struct coro *current = SvSTATE (coro_current);
3739
3740 if (ecb_expect_false (current == self))
3741 {
3742 coro_times_update ();
3743 coro_times_add (SvSTATE (coro_current));
3744 }
3745
3746 EXTEND (SP, 2);
3747 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3748 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3749
3750 if (ecb_expect_false (current == self))
3751 coro_times_sub (SvSTATE (coro_current));
3752}
3753
3754void
3755swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3756 CODE:
3757{
3758 struct coro *current = SvSTATE_current;
3759
3760 if (current == coro)
3761 SWAP_SVS (current);
3762
3763 if (!coro->swap_sv)
3764 coro->swap_sv = newAV ();
3765
3766 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3767 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3768
3769 if (current == coro)
3770 SWAP_SVS (current);
3771}
3772
2573 3773
2574MODULE = Coro::State PACKAGE = Coro 3774MODULE = Coro::State PACKAGE = Coro
2575 3775
2576BOOT: 3776BOOT:
2577{ 3777{
2578 int i;
2579
2580 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2581 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3778 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2582 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3779 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2583 3780 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2584 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3781 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2585 SvREADONLY_on (coro_current); 3782 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3783 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3784 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3785 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3786
3787 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3788 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3789 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3790 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2586 3791
2587 coro_stash = gv_stashpv ("Coro", TRUE); 3792 coro_stash = gv_stashpv ("Coro", TRUE);
2588 3793
2589 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3794 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2590 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3795 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2591 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3796 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2592 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3797 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2593 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3798 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2594 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3799 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2595
2596 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2597 coro_ready[i] = newAV ();
2598 3800
2599 { 3801 {
2600 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3802 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2601 3803
2602 coroapi.schedule = api_schedule; 3804 coroapi.schedule = api_schedule;
3805 coroapi.schedule_to = api_schedule_to;
2603 coroapi.cede = api_cede; 3806 coroapi.cede = api_cede;
2604 coroapi.cede_notself = api_cede_notself; 3807 coroapi.cede_notself = api_cede_notself;
2605 coroapi.ready = api_ready; 3808 coroapi.ready = api_ready;
2606 coroapi.is_ready = api_is_ready; 3809 coroapi.is_ready = api_is_ready;
2607 coroapi.nready = coro_nready; 3810 coroapi.nready = coro_nready;
2608 coroapi.current = coro_current; 3811 coroapi.current = coro_current;
2609 3812
2610 GCoroAPI = &coroapi; 3813 /*GCoroAPI = &coroapi;*/
2611 sv_setiv (sv, (IV)&coroapi); 3814 sv_setiv (sv, (IV)&coroapi);
2612 SvREADONLY_on (sv); 3815 SvREADONLY_on (sv);
2613 } 3816 }
2614} 3817}
3818
3819SV *
3820async (...)
3821 PROTOTYPE: &@
3822 CODE:
3823 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3824 api_ready (aTHX_ RETVAL);
3825 OUTPUT:
3826 RETVAL
3827
3828void
3829_destroy (Coro::State coro)
3830 CODE:
3831 /* used by the manager thread */
3832 coro_state_destroy (aTHX_ coro);
3833
3834void
3835on_destroy (Coro::State coro, SV *cb)
3836 CODE:
3837 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3838
3839void
3840join (...)
3841 CODE:
3842 CORO_EXECUTE_SLF_XS (slf_init_join);
3843
3844void
3845terminate (...)
3846 CODE:
3847 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3848
3849void
3850cancel (...)
3851 CODE:
3852 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3853
3854int
3855safe_cancel (Coro::State self, ...)
3856 C_ARGS: aTHX_ self, &ST (1), items - 1
2615 3857
2616void 3858void
2617schedule (...) 3859schedule (...)
2618 CODE: 3860 CODE:
2619 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3861 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3862
3863void
3864schedule_to (...)
3865 CODE:
3866 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3867
3868void
3869cede_to (...)
3870 CODE:
3871 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2620 3872
2621void 3873void
2622cede (...) 3874cede (...)
2623 CODE: 3875 CODE:
2624 CORO_EXECUTE_SLF_XS (slf_init_cede); 3876 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2638void 3890void
2639_set_readyhook (SV *hook) 3891_set_readyhook (SV *hook)
2640 PROTOTYPE: $ 3892 PROTOTYPE: $
2641 CODE: 3893 CODE:
2642 SvREFCNT_dec (coro_readyhook); 3894 SvREFCNT_dec (coro_readyhook);
3895 SvGETMAGIC (hook);
3896 if (SvOK (hook))
3897 {
2643 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3898 coro_readyhook = newSVsv (hook);
3899 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3900 }
3901 else
3902 {
3903 coro_readyhook = 0;
3904 CORO_READYHOOK = 0;
3905 }
2644 3906
2645int 3907int
2646prio (Coro::State coro, int newprio = 0) 3908prio (Coro::State coro, int newprio = 0)
2647 PROTOTYPE: $;$ 3909 PROTOTYPE: $;$
2648 ALIAS: 3910 ALIAS:
… …
2654 if (items > 1) 3916 if (items > 1)
2655 { 3917 {
2656 if (ix) 3918 if (ix)
2657 newprio = coro->prio - newprio; 3919 newprio = coro->prio - newprio;
2658 3920
2659 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3921 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2660 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3922 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2661 3923
2662 coro->prio = newprio; 3924 coro->prio = newprio;
2663 } 3925 }
2664} 3926}
2665 OUTPUT: 3927 OUTPUT:
… …
2679 CODE: 3941 CODE:
2680 RETVAL = coro_nready; 3942 RETVAL = coro_nready;
2681 OUTPUT: 3943 OUTPUT:
2682 RETVAL 3944 RETVAL
2683 3945
2684# for async_pool speedup
2685void 3946void
2686_pool_1 (SV *cb) 3947suspend (Coro::State self)
3948 PROTOTYPE: $
2687 CODE: 3949 CODE:
2688{ 3950 self->flags |= CF_SUSPENDED;
2689 HV *hv = (HV *)SvRV (coro_current);
2690 struct coro *coro = SvSTATE_hv ((SV *)hv);
2691 AV *defav = GvAV (PL_defgv);
2692 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2693 AV *invoke_av;
2694 int i, len;
2695 3951
2696 if (!invoke) 3952void
3953resume (Coro::State self)
3954 PROTOTYPE: $
3955 CODE:
3956 self->flags &= ~CF_SUSPENDED;
3957
3958void
3959_pool_handler (...)
3960 CODE:
3961 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3962
3963void
3964async_pool (SV *cv, ...)
3965 PROTOTYPE: &@
3966 PPCODE:
3967{
3968 HV *hv = (HV *)av_pop (av_async_pool);
3969 AV *av = newAV ();
3970 SV *cb = ST (0);
3971 int i;
3972
3973 av_extend (av, items - 2);
3974 for (i = 1; i < items; ++i)
3975 av_push (av, SvREFCNT_inc_NN (ST (i)));
3976
3977 if ((SV *)hv == &PL_sv_undef)
2697 { 3978 {
2698 SV *old = PL_diehook; 3979 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2699 PL_diehook = 0; 3980 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2700 SvREFCNT_dec (old); 3981 SvREFCNT_dec (sv);
2701 croak ("\3async_pool terminate\2\n");
2702 } 3982 }
2703 3983
2704 SvREFCNT_dec (coro->saved_deffh);
2705 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2706
2707 hv_store (hv, "desc", sizeof ("desc") - 1,
2708 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2709
2710 invoke_av = (AV *)SvRV (invoke);
2711 len = av_len (invoke_av);
2712
2713 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2714
2715 if (len > 0)
2716 { 3984 {
2717 av_fill (defav, len - 1); 3985 struct coro *coro = SvSTATE_hv (hv);
2718 for (i = 0; i < len; ++i) 3986
2719 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3987 assert (!coro->invoke_cb);
3988 assert (!coro->invoke_av);
3989 coro->invoke_cb = SvREFCNT_inc (cb);
3990 coro->invoke_av = av;
2720 } 3991 }
3992
3993 api_ready (aTHX_ (SV *)hv);
3994
3995 if (GIMME_V != G_VOID)
3996 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3997 else
3998 SvREFCNT_dec (hv);
2721} 3999}
4000
4001SV *
4002rouse_cb ()
4003 PROTOTYPE:
4004 CODE:
4005 RETVAL = coro_new_rouse_cb (aTHX);
4006 OUTPUT:
4007 RETVAL
2722 4008
2723void 4009void
2724_pool_2 (SV *cb) 4010rouse_wait (...)
4011 PROTOTYPE: ;$
4012 PPCODE:
4013 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4014
4015void
4016on_enter (SV *block)
4017 ALIAS:
4018 on_leave = 1
4019 PROTOTYPE: &
2725 CODE: 4020 CODE:
2726{ 4021{
2727 HV *hv = (HV *)SvRV (coro_current);
2728 struct coro *coro = SvSTATE_hv ((SV *)hv); 4022 struct coro *coro = SvSTATE_current;
4023 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2729 4024
2730 sv_setsv (cb, &PL_sv_undef); 4025 block = s_get_cv_croak (block);
2731 4026
2732 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4027 if (!*avp)
2733 coro->saved_deffh = 0; 4028 *avp = newAV ();
2734 4029
2735 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4030 av_push (*avp, SvREFCNT_inc (block));
2736 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2737 {
2738 SV *old = PL_diehook;
2739 PL_diehook = 0;
2740 SvREFCNT_dec (old);
2741 croak ("\3async_pool terminate\2\n");
2742 }
2743 4031
2744 av_clear (GvAV (PL_defgv)); 4032 if (!ix)
2745 hv_store (hv, "desc", sizeof ("desc") - 1, 4033 on_enterleave_call (aTHX_ block);
2746 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2747 4034
2748 coro->prio = 0; 4035 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2749 4036 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2750 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4037 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2751 api_trace (aTHX_ coro_current, 0);
2752
2753 av_push (av_async_pool, newSVsv (coro_current));
2754} 4038}
2755 4039
2756 4040
2757MODULE = Coro::State PACKAGE = PerlIO::cede 4041MODULE = Coro::State PACKAGE = PerlIO::cede
2758 4042
… …
2761 4045
2762 4046
2763MODULE = Coro::State PACKAGE = Coro::Semaphore 4047MODULE = Coro::State PACKAGE = Coro::Semaphore
2764 4048
2765SV * 4049SV *
2766new (SV *klass, SV *count_ = 0) 4050new (SV *klass, SV *count = 0)
2767 CODE: 4051 CODE:
2768{ 4052{
2769 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4053 int semcnt = 1;
2770 AV *av = newAV ();
2771 SV **ary;
2772 4054
2773 /* unfortunately, building manually saves memory */ 4055 if (count)
2774 Newx (ary, 2, SV *); 4056 {
2775 AvALLOC (av) = ary; 4057 SvGETMAGIC (count);
2776 AvARRAY (av) = ary;
2777 AvMAX (av) = 1;
2778 AvFILLp (av) = 0;
2779 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2780 4058
2781 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4059 if (SvOK (count))
4060 semcnt = SvIV (count);
4061 }
4062
4063 RETVAL = sv_bless (
4064 coro_waitarray_new (aTHX_ semcnt),
4065 GvSTASH (CvGV (cv))
4066 );
2782} 4067}
4068 OUTPUT:
4069 RETVAL
4070
4071# helper for Coro::Channel and others
4072SV *
4073_alloc (int count)
4074 CODE:
4075 RETVAL = coro_waitarray_new (aTHX_ count);
2783 OUTPUT: 4076 OUTPUT:
2784 RETVAL 4077 RETVAL
2785 4078
2786SV * 4079SV *
2787count (SV *self) 4080count (SV *self)
… …
2796 adjust = 1 4089 adjust = 1
2797 CODE: 4090 CODE:
2798 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4091 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2799 4092
2800void 4093void
2801down (SV *self) 4094down (...)
2802 CODE: 4095 CODE:
2803 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4096 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4097
4098void
4099wait (...)
4100 CODE:
4101 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2804 4102
2805void 4103void
2806try (SV *self) 4104try (SV *self)
2807 PPCODE: 4105 PPCODE:
2808{ 4106{
… …
2820 XSRETURN_NO; 4118 XSRETURN_NO;
2821} 4119}
2822 4120
2823void 4121void
2824waiters (SV *self) 4122waiters (SV *self)
2825 CODE: 4123 PPCODE:
2826{ 4124{
2827 AV *av = (AV *)SvRV (self); 4125 AV *av = (AV *)SvRV (self);
4126 int wcount = AvFILLp (av) + 1 - 1;
2828 4127
2829 if (GIMME_V == G_SCALAR) 4128 if (GIMME_V == G_SCALAR)
2830 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4129 XPUSHs (sv_2mortal (newSViv (wcount)));
2831 else 4130 else
2832 { 4131 {
2833 int i; 4132 int i;
2834 EXTEND (SP, AvFILLp (av) + 1 - 1); 4133 EXTEND (SP, wcount);
2835 for (i = 1; i <= AvFILLp (av); ++i) 4134 for (i = 1; i <= wcount; ++i)
2836 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4135 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2837 } 4136 }
2838} 4137}
4138
4139MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4140
4141void
4142_may_delete (SV *sem, int count, unsigned int extra_refs)
4143 PPCODE:
4144{
4145 AV *av = (AV *)SvRV (sem);
4146
4147 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4148 && AvFILLp (av) == 0 /* no waiters, just count */
4149 && SvIV (AvARRAY (av)[0]) == count)
4150 XSRETURN_YES;
4151
4152 XSRETURN_NO;
4153}
4154
4155MODULE = Coro::State PACKAGE = Coro::Signal
4156
4157SV *
4158new (SV *klass)
4159 CODE:
4160 RETVAL = sv_bless (
4161 coro_waitarray_new (aTHX_ 0),
4162 GvSTASH (CvGV (cv))
4163 );
4164 OUTPUT:
4165 RETVAL
4166
4167void
4168wait (...)
4169 CODE:
4170 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4171
4172void
4173broadcast (SV *self)
4174 CODE:
4175{
4176 AV *av = (AV *)SvRV (self);
4177 coro_signal_wake (aTHX_ av, AvFILLp (av));
4178}
4179
4180void
4181send (SV *self)
4182 CODE:
4183{
4184 AV *av = (AV *)SvRV (self);
4185
4186 if (AvFILLp (av))
4187 coro_signal_wake (aTHX_ av, 1);
4188 else
4189 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4190}
4191
4192IV
4193awaited (SV *self)
4194 CODE:
4195 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4196 OUTPUT:
4197 RETVAL
2839 4198
2840 4199
2841MODULE = Coro::State PACKAGE = Coro::AnyEvent 4200MODULE = Coro::State PACKAGE = Coro::AnyEvent
2842 4201
2843BOOT: 4202BOOT:
… …
2845 4204
2846void 4205void
2847_schedule (...) 4206_schedule (...)
2848 CODE: 4207 CODE:
2849{ 4208{
2850 static int incede; 4209 static int incede;
2851 4210
2852 api_cede_notself (aTHX); 4211 api_cede_notself (aTHX);
2853 4212
2854 ++incede; 4213 ++incede;
2855 while (coro_nready >= incede && api_cede (aTHX)) 4214 while (coro_nready >= incede && api_cede (aTHX))
… …
2871 4230
2872void 4231void
2873_register (char *target, char *proto, SV *req) 4232_register (char *target, char *proto, SV *req)
2874 CODE: 4233 CODE:
2875{ 4234{
2876 HV *st; 4235 SV *req_cv = s_get_cv_croak (req);
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 /* newXSproto doesn't return the CV on 5.8 */ 4236 /* newXSproto doesn't return the CV on 5.8 */
2880 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4237 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2881 sv_setpv ((SV *)slf_cv, proto); 4238 sv_setpv ((SV *)slf_cv, proto);
2882 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4239 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2883} 4240}
2884 4241
4242MODULE = Coro::State PACKAGE = Coro::Select
4243
4244void
4245patch_pp_sselect ()
4246 CODE:
4247 if (!coro_old_pp_sselect)
4248 {
4249 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4250 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4251 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4252 }
4253
4254void
4255unpatch_pp_sselect ()
4256 CODE:
4257 if (coro_old_pp_sselect)
4258 {
4259 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4260 coro_old_pp_sselect = 0;
4261 }
4262
4263MODULE = Coro::State PACKAGE = Coro::Util
4264
4265void
4266_exit (int code)
4267 CODE:
4268 _exit (code);
4269
4270NV
4271time ()
4272 CODE:
4273 RETVAL = nvtime (aTHX);
4274 OUTPUT:
4275 RETVAL
4276
4277NV
4278gettimeofday ()
4279 PPCODE:
4280{
4281 UV tv [2];
4282 u2time (aTHX_ tv);
4283 EXTEND (SP, 2);
4284 PUSHs (sv_2mortal (newSVuv (tv [0])));
4285 PUSHs (sv_2mortal (newSVuv (tv [1])));
4286}
4287

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