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Comparing Coro/Coro/State.xs (file contents):
Revision 1.281 by root, Sun Nov 16 10:12:38 2008 UTC vs.
Revision 1.433 by root, Thu May 9 05:40:14 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
32# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
33#else
34typedef AV PADNAMELIST;
35# if !PERL_VERSION_ATLEAST(5,8,0)
36typedef AV PADLIST;
37typedef AV PAD;
38# endif
39# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
40# define PadlistMAX(pl) AvFILLp (pl)
41# define PadlistNAMES(pl) (*PadlistARRAY (pl))
42# define PadARRAY AvARRAY
43# define PadMAX AvFILLp
44# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
45#endif
46
47#if defined(_WIN32)
48# undef HAS_GETTIMEOFDAY
18# undef setjmp 49# undef setjmp
19# undef longjmp 50# undef longjmp
20# undef _exit 51# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 52# define setjmp _setjmp /* deep magic */
22#else 53#else
23# include <inttypes.h> /* most portable stdint.h */ 54# include <inttypes.h> /* most portable stdint.h */
24#endif 55#endif
25 56
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 57/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 58static int cctx_max_idle = 4;
55 59
56#define PERL_VERSION_ATLEAST(a,b,c) \ 60#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 61# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD
108#endif
109
110#ifndef CORO_STACKGUARD
111# define CORO_STACKGUARD 0
112#endif 62#endif
113 63
114/* prefer perl internal functions over our own? */ 64/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS 65#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0 66# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 67#endif
118 68
119/* The next macros try to return the current stack pointer, in an as 69/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 70 * portable way as possible. */
121#if __GNUC__ >= 4 71#if __GNUC__ >= 4
72# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 73# define STACKLEVEL __builtin_frame_address (0)
123#else 74#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
76# define STACKLEVEL ((void *)&stacklevel)
125#endif 77#endif
126 78
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 80
144#include "CoroAPI.h" 81#include "CoroAPI.h"
82#define GCoroAPI (&coroapi) /* very sneaky */
145 83
146#ifdef USE_ITHREADS 84#ifdef USE_ITHREADS
147# if CORO_PTHREAD 85# if CORO_PTHREAD
148static void *coro_thx; 86static void *coro_thx;
149# endif 87# endif
150#endif 88#endif
151 89
152/* helper storage struct for Coro::AIO */ 90#ifdef __linux
153struct io_state 91# include <time.h> /* for timespec */
154{ 92# include <syscall.h> /* for SYS_* */
155 AV *res; 93# ifdef SYS_clock_gettime
156 int errorno; 94# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 95# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 96# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 97# endif
160}; 98#endif
161 99
162static double (*nvtime)(); /* so why doesn't it take void? */ 100static double (*nvtime)(); /* so why doesn't it take void? */
101static void (*u2time)(pTHX_ UV ret[2]);
102
103/* we hijack an hopefully unused CV flag for our purposes */
104#define CVf_SLF 0x4000
105static OP *pp_slf (pTHX);
106static void slf_destroy (pTHX_ struct coro *coro);
163 107
164static U32 cctx_gen; 108static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 109static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 110static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 111static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 112static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 113static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 114static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next; 115
116static AV *av_destroy; /* destruction queue */
117static SV *sv_manager; /* the manager coro */
118static SV *sv_idle; /* $Coro::idle */
172 119
173static GV *irsgv; /* $/ */ 120static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 121static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 122static SV *rv_diehook;
176static SV *rv_warnhook; 123static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */ 124static HV *hv_sig; /* %SIG */
178 125
179/* async_pool helper stuff */ 126/* async_pool helper stuff */
180static SV *sv_pool_rss; 127static SV *sv_pool_rss;
181static SV *sv_pool_size; 128static SV *sv_pool_size;
129static SV *sv_async_pool_idle; /* description string */
182static AV *av_async_pool; 130static AV *av_async_pool; /* idle pool */
131static SV *sv_Coro; /* class string */
132static CV *cv_pool_handler;
183 133
184/* Coro::AnyEvent */ 134/* Coro::AnyEvent */
185static SV *sv_activity; 135static SV *sv_activity;
186 136
137/* enable processtime/realtime profiling */
138static char enable_times;
139typedef U32 coro_ts[2];
140static coro_ts time_real, time_cpu;
141static char times_valid;
142
187static struct coro_cctx *cctx_first; 143static struct coro_cctx *cctx_first;
188static int cctx_count, cctx_idle; 144static int cctx_count, cctx_idle;
189 145
190enum { 146enum
147{
191 CC_MAPPED = 0x01, 148 CC_MAPPED = 0x01,
192 CC_NOREUSE = 0x02, /* throw this away after tracing */ 149 CC_NOREUSE = 0x02, /* throw this away after tracing */
193 CC_TRACE = 0x04, 150 CC_TRACE = 0x04,
194 CC_TRACE_SUB = 0x08, /* trace sub calls */ 151 CC_TRACE_SUB = 0x08, /* trace sub calls */
195 CC_TRACE_LINE = 0x10, /* trace each statement */ 152 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
200typedef struct coro_cctx 157typedef struct coro_cctx
201{ 158{
202 struct coro_cctx *next; 159 struct coro_cctx *next;
203 160
204 /* the stack */ 161 /* the stack */
205 void *sptr; 162 struct coro_stack stack;
206 size_t ssize;
207 163
208 /* cpu state */ 164 /* cpu state */
209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 165 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
166#ifndef NDEBUG
210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 167 JMPENV *idle_te; /* same as idle_sp, but for top_env */
168#endif
211 JMPENV *top_env; 169 JMPENV *top_env;
212 coro_context cctx; 170 coro_context cctx;
213 171
214 U32 gen; 172 U32 gen;
215#if CORO_USE_VALGRIND 173#if CORO_USE_VALGRIND
216 int valgrind_id; 174 int valgrind_id;
217#endif 175#endif
218 unsigned char flags; 176 unsigned char flags;
219} coro_cctx; 177} coro_cctx;
220 178
179static coro_cctx *cctx_current; /* the currently running cctx */
180
181/*****************************************************************************/
182
183static MGVTBL coro_state_vtbl;
184
221enum { 185enum
186{
222 CF_RUNNING = 0x0001, /* coroutine is running */ 187 CF_RUNNING = 0x0001, /* coroutine is running */
223 CF_READY = 0x0002, /* coroutine is ready */ 188 CF_READY = 0x0002, /* coroutine is ready */
224 CF_NEW = 0x0004, /* has never been switched to */ 189 CF_NEW = 0x0004, /* has never been switched to */
225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 190 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
191 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
192 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
226}; 193};
227 194
228/* the structure where most of the perl state is stored, overlaid on the cxstack */ 195/* the structure where most of the perl state is stored, overlaid on the cxstack */
229typedef struct 196typedef struct
230{ 197{
231 SV *defsv;
232 AV *defav;
233 SV *errsv;
234 SV *irsgv;
235#define VAR(name,type) type name; 198 #define VARx(name,expr,type) type name;
236# include "state.h" 199 #include "state.h"
237#undef VAR
238} perl_slots; 200} perl_slots;
239 201
202/* how many context stack entries do we need for perl_slots */
240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 203#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
241 204
242/* this is a structure representing a perl-level coroutine */ 205/* this is a structure representing a perl-level coroutine */
243struct coro { 206struct coro
207{
244 /* the C coroutine allocated to this perl coroutine, if any */ 208 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 209 coro_cctx *cctx;
246 210
247 /* process data */ 211 /* ready queue */
212 struct coro *next_ready;
213
214 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 215 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 216 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 217 perl_slots *slot; /* basically the saved sp */
251 218
219 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 220 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 221 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 222 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
257 223
258 /* statistics */ 224 /* statistics */
259 int usecount; /* number of transfers to this coro */ 225 int usecount; /* number of transfers to this coro */
260 226
261 /* coro process data */ 227 /* coro process data */
262 int prio; 228 int prio;
263 SV *throw; /* exception to be thrown */ 229 SV *except; /* exception to be thrown */
230 SV *rouse_cb; /* last rouse callback */
231 AV *on_destroy; /* callbacks or coros to notify on destroy */
232 AV *status; /* the exit status list */
264 233
265 /* async_pool */ 234 /* async_pool */
266 SV *saved_deffh; 235 SV *saved_deffh;
236 SV *invoke_cb;
237 AV *invoke_av;
238
239 /* on_enter/on_leave */
240 AV *on_enter;
241 AV *on_leave;
242
243 /* swap_sv */
244 AV *swap_sv;
245
246 /* times */
247 coro_ts t_cpu, t_real;
267 248
268 /* linked list */ 249 /* linked list */
269 struct coro *next, *prev; 250 struct coro *next, *prev;
270}; 251};
271 252
272typedef struct coro *Coro__State; 253typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 254typedef struct coro *Coro__State_or_hashref;
274 255
256/* the following variables are effectively part of the perl context */
257/* and get copied between struct coro and these variables */
258/* the main reason we don't support windows process emulation */
275static struct CoroSLF slf_frame; /* the current slf frame */ 259static struct CoroSLF slf_frame; /* the current slf frame */
276 260
277/** Coro ********************************************************************/ 261/** Coro ********************************************************************/
278 262
279#define PRIO_MAX 3 263#define CORO_PRIO_MAX 3
280#define PRIO_HIGH 1 264#define CORO_PRIO_HIGH 1
281#define PRIO_NORMAL 0 265#define CORO_PRIO_NORMAL 0
282#define PRIO_LOW -1 266#define CORO_PRIO_LOW -1
283#define PRIO_IDLE -3 267#define CORO_PRIO_IDLE -3
284#define PRIO_MIN -4 268#define CORO_PRIO_MIN -4
285 269
286/* for Coro.pm */ 270/* for Coro.pm */
287static SV *coro_current; 271static SV *coro_current;
288static SV *coro_readyhook; 272static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 273static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
274static CV *cv_coro_run;
290static struct coro *coro_first; 275static struct coro *coro_first;
291#define coro_nready coroapi.nready 276#define coro_nready coroapi.nready
292 277
278/** JIT *********************************************************************/
279
280#if CORO_JIT
281 /* APPLE doesn't have mmap though */
282 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
283 #ifndef CORO_JIT_TYPE
284 #if ECB_AMD64 && CORO_JIT_UNIXY
285 #define CORO_JIT_TYPE "amd64-unix"
286 #elif __i386 && CORO_JIT_UNIXY
287 #define CORO_JIT_TYPE "x86-unix"
288 #endif
289 #endif
290#endif
291
292#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
293 #undef CORO_JIT
294#endif
295
296#if CORO_JIT
297 typedef void (*load_save_perl_slots_type)(perl_slots *);
298 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
299#endif
300
301/** Coro::Select ************************************************************/
302
303static OP *(*coro_old_pp_sselect) (pTHX);
304static SV *coro_select_select;
305
306/* horrible hack, but if it works... */
307static OP *
308coro_pp_sselect (pTHX)
309{
310 dSP;
311 PUSHMARK (SP - 4); /* fake argument list */
312 XPUSHs (coro_select_select);
313 PUTBACK;
314
315 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
316 PL_op->op_flags |= OPf_STACKED;
317 PL_op->op_private = 0;
318 return PL_ppaddr [OP_ENTERSUB](aTHX);
319}
320
321/** time stuff **************************************************************/
322
323#ifdef HAS_GETTIMEOFDAY
324
325ecb_inline void
326coro_u2time (pTHX_ UV ret[2])
327{
328 struct timeval tv;
329 gettimeofday (&tv, 0);
330
331 ret [0] = tv.tv_sec;
332 ret [1] = tv.tv_usec;
333}
334
335ecb_inline double
336coro_nvtime (void)
337{
338 struct timeval tv;
339 gettimeofday (&tv, 0);
340
341 return tv.tv_sec + tv.tv_usec * 1e-6;
342}
343
344ecb_inline void
345time_init (pTHX)
346{
347 nvtime = coro_nvtime;
348 u2time = coro_u2time;
349}
350
351#else
352
353ecb_inline void
354time_init (pTHX)
355{
356 SV **svp;
357
358 require_pv ("Time/HiRes.pm");
359
360 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
361
362 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
363 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
364
365 nvtime = INT2PTR (double (*)(), SvIV (*svp));
366
367 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
368 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
369}
370
371#endif
372
293/** lowlevel stuff **********************************************************/ 373/** lowlevel stuff **********************************************************/
294 374
295static SV * 375static SV * ecb_noinline
296coro_get_sv (pTHX_ const char *name, int create) 376coro_get_sv (pTHX_ const char *name, int create)
297{ 377{
298#if PERL_VERSION_ATLEAST (5,10,0) 378#if PERL_VERSION_ATLEAST (5,10,0)
299 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 379 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
300 get_sv (name, create); 380 get_sv (name, create);
301#endif 381#endif
302 return get_sv (name, create); 382 return get_sv (name, create);
303} 383}
304 384
305static AV * 385static AV * ecb_noinline
306coro_get_av (pTHX_ const char *name, int create) 386coro_get_av (pTHX_ const char *name, int create)
307{ 387{
308#if PERL_VERSION_ATLEAST (5,10,0) 388#if PERL_VERSION_ATLEAST (5,10,0)
309 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 389 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
310 get_av (name, create); 390 get_av (name, create);
311#endif 391#endif
312 return get_av (name, create); 392 return get_av (name, create);
313} 393}
314 394
315static HV * 395static HV * ecb_noinline
316coro_get_hv (pTHX_ const char *name, int create) 396coro_get_hv (pTHX_ const char *name, int create)
317{ 397{
318#if PERL_VERSION_ATLEAST (5,10,0) 398#if PERL_VERSION_ATLEAST (5,10,0)
319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 399 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
320 get_hv (name, create); 400 get_hv (name, create);
321#endif 401#endif
322 return get_hv (name, create); 402 return get_hv (name, create);
323} 403}
324 404
325static AV * 405ecb_inline void
406coro_times_update (void)
407{
408#ifdef coro_clock_gettime
409 struct timespec ts;
410
411 ts.tv_sec = ts.tv_nsec = 0;
412 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
413 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
414
415 ts.tv_sec = ts.tv_nsec = 0;
416 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
417 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
418#else
419 dTHX;
420 UV tv[2];
421
422 u2time (aTHX_ tv);
423 time_real [0] = tv [0];
424 time_real [1] = tv [1] * 1000;
425#endif
426}
427
428ecb_inline void
429coro_times_add (struct coro *c)
430{
431 c->t_real [1] += time_real [1];
432 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
433 c->t_real [0] += time_real [0];
434
435 c->t_cpu [1] += time_cpu [1];
436 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
437 c->t_cpu [0] += time_cpu [0];
438}
439
440ecb_inline void
441coro_times_sub (struct coro *c)
442{
443 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
444 c->t_real [1] -= time_real [1];
445 c->t_real [0] -= time_real [0];
446
447 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
448 c->t_cpu [1] -= time_cpu [1];
449 c->t_cpu [0] -= time_cpu [0];
450}
451
452/*****************************************************************************/
453/* magic glue */
454
455#define CORO_MAGIC_type_cv 26
456#define CORO_MAGIC_type_state PERL_MAGIC_ext
457
458#define CORO_MAGIC_NN(sv, type) \
459 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
460 ? SvMAGIC (sv) \
461 : mg_find (sv, type))
462
463#define CORO_MAGIC(sv, type) \
464 (ecb_expect_true (SvMAGIC (sv)) \
465 ? CORO_MAGIC_NN (sv, type) \
466 : 0)
467
468#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
469#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
470
471ecb_inline MAGIC *
472SvSTATEhv_p (pTHX_ SV *coro)
473{
474 MAGIC *mg;
475
476 if (ecb_expect_true (
477 SvTYPE (coro) == SVt_PVHV
478 && (mg = CORO_MAGIC_state (coro))
479 && mg->mg_virtual == &coro_state_vtbl
480 ))
481 return mg;
482
483 return 0;
484}
485
486ecb_inline struct coro *
487SvSTATE_ (pTHX_ SV *coro)
488{
489 MAGIC *mg;
490
491 if (SvROK (coro))
492 coro = SvRV (coro);
493
494 mg = SvSTATEhv_p (aTHX_ coro);
495 if (!mg)
496 croak ("Coro::State object required");
497
498 return (struct coro *)mg->mg_ptr;
499}
500
501#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
502
503/* faster than SvSTATE, but expects a coroutine hv */
504#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
505#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
506
507/*****************************************************************************/
508/* padlist management and caching */
509
510ecb_inline PADLIST *
326coro_clone_padlist (pTHX_ CV *cv) 511coro_derive_padlist (pTHX_ CV *cv)
327{ 512{
328 AV *padlist = CvPADLIST (cv); 513 PADLIST *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 514 PADLIST *newpadlist;
515 PAD *newpad;
516 PADOFFSET const off = PadlistMAX (padlist) + 1;
330 517
331 newpadlist = newAV (); 518 newPADLIST(newpadlist);
519#if !PERL_VERSION_ATLEAST(5,15,3)
520 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
332 AvREAL_off (newpadlist); 521 AvREAL_off (newpadlist);
522#endif
333#if PERL_VERSION_ATLEAST (5,10,0) 523#if PERL_VERSION_ATLEAST (5,10,0)
334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 524 Perl_pad_push (aTHX_ padlist, off);
335#else 525#else
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 526 Perl_pad_push (aTHX_ padlist, off, 1);
337#endif 527#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 528 newpad = PadlistARRAY (padlist)[off];
339 --AvFILLp (padlist); 529 PadlistMAX (padlist) = off - 1;
340 530
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 531 /* Already extended to 2 elements by newPADLIST. */
342 av_store (newpadlist, 1, (SV *)newpad); 532 PadlistMAX (newpadlist) = 1;
533 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
534 PadlistARRAY (newpadlist)[1] = newpad;
343 535
344 return newpadlist; 536 return newpadlist;
345} 537}
346 538
347static void 539ecb_inline void
348free_padlist (pTHX_ AV *padlist) 540free_padlist (pTHX_ PADLIST *padlist)
349{ 541{
350 /* may be during global destruction */ 542 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 543 if (!IN_DESTRUCT)
352 { 544 {
353 I32 i = AvFILLp (padlist); 545 I32 i = PadlistMAX (padlist);
354 while (i >= 0) 546
547 while (i > 0) /* special-case index 0 */
355 { 548 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 549 /* we try to be extra-careful here */
357 if (svp) 550 PAD *pad = PadlistARRAY (padlist)[i--];
358 { 551 I32 j = PadMAX (pad);
359 SV *sv;
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))
361 SvREFCNT_dec (sv);
362 552
553 while (j >= 0)
554 SvREFCNT_dec (PadARRAY (pad)[j--]);
555
556 PadMAX (pad) = -1;
363 SvREFCNT_dec (*svp); 557 SvREFCNT_dec (pad);
364 }
365 } 558 }
366 559
560 SvREFCNT_dec (PadlistNAMES (padlist));
561
562#ifdef NEWPADAPI
563 Safefree (PadlistARRAY (padlist));
564 Safefree (padlist);
565#else
566 AvFILLp (padlist) = -1;
567 AvREAL_off (padlist);
367 SvREFCNT_dec ((SV*)padlist); 568 SvREFCNT_dec ((SV*)padlist);
569#endif
368 } 570 }
369} 571}
370 572
371static int 573static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 574coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 575{
374 AV *padlist; 576 PADLIST *padlist;
375 AV *av = (AV *)mg->mg_obj; 577 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
578 size_t len = *(size_t *)mg->mg_ptr;
376 579
377 /* casting is fun. */ 580 /* perl manages to free our internal AV and _then_ call us */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 581 if (IN_DESTRUCT)
582 return 0;
583
584 while (len--)
379 free_padlist (aTHX_ padlist); 585 free_padlist (aTHX_ padlists[len]);
380
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 586
383 return 0; 587 return 0;
384} 588}
385
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 589
389static MGVTBL coro_cv_vtbl = { 590static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 591 0, 0, 0, 0,
391 coro_cv_free 592 coro_cv_free
392}; 593};
393 594
394#define CORO_MAGIC(sv, type) \
395 expect_true (SvMAGIC (sv)) \
396 ? expect_true (SvMAGIC (sv)->mg_type == type) \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0
400
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro)
406{
407 HV *stash;
408 MAGIC *mg;
409
410 if (SvROK (coro))
411 coro = SvRV (coro);
412
413 if (expect_false (SvTYPE (coro) != SVt_PVHV))
414 croak ("Coro::State object required");
415
416 stash = SvSTASH (coro);
417 if (expect_false (stash != coro_stash && stash != coro_state_stash))
418 {
419 /* very slow, but rare, check */
420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
421 croak ("Coro::State object required");
422 }
423
424 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr;
426}
427
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429
430/* fastert than SvSTATE, but expects a coroutine hv */
431INLINE struct coro *
432SvSTATE_hv (SV *sv)
433{
434 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435 ? SvMAGIC (sv)
436 : mg_find (sv, CORO_MAGIC_type_state);
437
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442
443/* the next two functions merely cache the padlists */ 595/* the next two functions merely cache the padlists */
444static void 596ecb_inline void
445get_padlist (pTHX_ CV *cv) 597get_padlist (pTHX_ CV *cv)
446{ 598{
447 MAGIC *mg = CORO_MAGIC_cv (cv); 599 MAGIC *mg = CORO_MAGIC_cv (cv);
448 AV *av; 600 size_t *lenp;
449 601
450 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 602 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
451 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 603 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
452 else 604 else
453 { 605 {
454#if CORO_PREFER_PERL_FUNCTIONS 606#if CORO_PREFER_PERL_FUNCTIONS
455 /* this is probably cleaner? but also slower! */ 607 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */ 608 /* in practise, it seems to be less stable */
457 CV *cp = Perl_cv_clone (cv); 609 CV *cp = Perl_cv_clone (aTHX_ cv);
458 CvPADLIST (cv) = CvPADLIST (cp); 610 CvPADLIST (cv) = CvPADLIST (cp);
459 CvPADLIST (cp) = 0; 611 CvPADLIST (cp) = 0;
460 SvREFCNT_dec (cp); 612 SvREFCNT_dec (cp);
461#else 613#else
462 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 614 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
463#endif 615#endif
464 } 616 }
465} 617}
466 618
467static void 619ecb_inline void
468put_padlist (pTHX_ CV *cv) 620put_padlist (pTHX_ CV *cv)
469{ 621{
470 MAGIC *mg = CORO_MAGIC_cv (cv); 622 MAGIC *mg = CORO_MAGIC_cv (cv);
471 AV *av;
472 623
473 if (expect_false (!mg)) 624 if (ecb_expect_false (!mg))
625 {
474 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 626 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
627 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
628 mg->mg_len = 1; /* so mg_free frees mg_ptr */
629 }
630 else
631 Renew (mg->mg_ptr,
632 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
633 char);
475 634
476 av = (AV *)mg->mg_obj; 635 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
477
478 if (expect_false (AvFILLp (av) >= AvMAX (av)))
479 av_extend (av, AvMAX (av) + 1);
480
481 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
482} 636}
483 637
484/** load & save, init *******************************************************/ 638/** load & save, init *******************************************************/
639
640ecb_inline void
641swap_sv (SV *a, SV *b)
642{
643 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
644 SV tmp;
645
646 /* swap sv_any */
647 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
648
649 /* swap sv_flags */
650 SvFLAGS (&tmp) = SvFLAGS (a);
651 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
652 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
653
654#if PERL_VERSION_ATLEAST (5,10,0)
655 /* perl 5.10 and later complicates this _quite_ a bit, but it also
656 * is much faster, so no quarrels here. alternatively, we could
657 * sv_upgrade to avoid this.
658 */
659 {
660 /* swap sv_u */
661 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
662
663 /* if SvANY points to the head, we need to adjust the pointers,
664 * as the pointer for a still points to b, and maybe vice versa.
665 */
666 #define svany_in_head(type) \
667 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
668
669 if (svany_in_head (SvTYPE (a)))
670 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
671
672 if (svany_in_head (SvTYPE (b)))
673 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
674 }
675#endif
676}
677
678/* swap sv heads, at least logically */
679static void
680swap_svs (pTHX_ Coro__State c)
681{
682 int i;
683
684 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
685 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
686}
687
688#define SWAP_SVS(coro) \
689 if (ecb_expect_false ((coro)->swap_sv)) \
690 swap_svs (aTHX_ (coro))
691
692static void
693on_enterleave_call (pTHX_ SV *cb);
485 694
486static void 695static void
487load_perl (pTHX_ Coro__State c) 696load_perl (pTHX_ Coro__State c)
488{ 697{
489 perl_slots *slot = c->slot; 698 perl_slots *slot = c->slot;
490 c->slot = 0; 699 c->slot = 0;
491 700
492 PL_mainstack = c->mainstack; 701 PL_mainstack = c->mainstack;
493 702
494 GvSV (PL_defgv) = slot->defsv; 703#if CORO_JIT
495 GvAV (PL_defgv) = slot->defav; 704 load_perl_slots (slot);
496 GvSV (PL_errgv) = slot->errsv; 705#else
497 GvSV (irsgv) = slot->irsgv;
498
499 #define VAR(name,type) PL_ ## name = slot->name; 706 #define VARx(name,expr,type) expr = slot->name;
500 # include "state.h" 707 #include "state.h"
501 #undef VAR 708#endif
502 709
503 { 710 {
504 dSP; 711 dSP;
505 712
506 CV *cv; 713 CV *cv;
507 714
508 /* now do the ugly restore mess */ 715 /* now do the ugly restore mess */
509 while (expect_true (cv = (CV *)POPs)) 716 while (ecb_expect_true (cv = (CV *)POPs))
510 { 717 {
511 put_padlist (aTHX_ cv); /* mark this padlist as available */ 718 put_padlist (aTHX_ cv); /* mark this padlist as available */
512 CvDEPTH (cv) = PTR2IV (POPs); 719 CvDEPTH (cv) = PTR2IV (POPs);
513 CvPADLIST (cv) = (AV *)POPs; 720 CvPADLIST (cv) = (PADLIST *)POPs;
514 } 721 }
515 722
516 PUTBACK; 723 PUTBACK;
517 } 724 }
518 725
519 slf_frame = c->slf_frame; 726 slf_frame = c->slf_frame;
727 CORO_THROW = c->except;
728
729 if (ecb_expect_false (enable_times))
730 {
731 if (ecb_expect_false (!times_valid))
732 coro_times_update ();
733
734 coro_times_sub (c);
735 }
736
737 if (ecb_expect_false (c->on_enter))
738 {
739 int i;
740
741 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
742 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
743 }
744
745 SWAP_SVS (c);
520} 746}
521 747
522static void 748static void
523save_perl (pTHX_ Coro__State c) 749save_perl (pTHX_ Coro__State c)
524{ 750{
751 SWAP_SVS (c);
752
753 if (ecb_expect_false (c->on_leave))
754 {
755 int i;
756
757 for (i = AvFILLp (c->on_leave); i >= 0; --i)
758 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
759 }
760
761 times_valid = 0;
762
763 if (ecb_expect_false (enable_times))
764 {
765 coro_times_update (); times_valid = 1;
766 coro_times_add (c);
767 }
768
769 c->except = CORO_THROW;
525 c->slf_frame = slf_frame; 770 c->slf_frame = slf_frame;
526 771
527 { 772 {
528 dSP; 773 dSP;
529 I32 cxix = cxstack_ix; 774 I32 cxix = cxstack_ix;
… …
537 782
538 XPUSHs (Nullsv); 783 XPUSHs (Nullsv);
539 /* this loop was inspired by pp_caller */ 784 /* this loop was inspired by pp_caller */
540 for (;;) 785 for (;;)
541 { 786 {
542 while (expect_true (cxix >= 0)) 787 while (ecb_expect_true (cxix >= 0))
543 { 788 {
544 PERL_CONTEXT *cx = &ccstk[cxix--]; 789 PERL_CONTEXT *cx = &ccstk[cxix--];
545 790
546 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 791 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
547 { 792 {
548 CV *cv = cx->blk_sub.cv; 793 CV *cv = cx->blk_sub.cv;
549 794
550 if (expect_true (CvDEPTH (cv))) 795 if (ecb_expect_true (CvDEPTH (cv)))
551 { 796 {
552 EXTEND (SP, 3); 797 EXTEND (SP, 3);
553 PUSHs ((SV *)CvPADLIST (cv)); 798 PUSHs ((SV *)CvPADLIST (cv));
554 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 799 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
555 PUSHs ((SV *)cv); 800 PUSHs ((SV *)cv);
… …
558 get_padlist (aTHX_ cv); 803 get_padlist (aTHX_ cv);
559 } 804 }
560 } 805 }
561 } 806 }
562 807
563 if (expect_true (top_si->si_type == PERLSI_MAIN)) 808 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
564 break; 809 break;
565 810
566 top_si = top_si->si_prev; 811 top_si = top_si->si_prev;
567 ccstk = top_si->si_cxstack; 812 ccstk = top_si->si_cxstack;
568 cxix = top_si->si_cxix; 813 cxix = top_si->si_cxix;
… …
570 815
571 PUTBACK; 816 PUTBACK;
572 } 817 }
573 818
574 /* allocate some space on the context stack for our purposes */ 819 /* allocate some space on the context stack for our purposes */
575 /* we manually unroll here, as usually 2 slots is enough */ 820 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
576 if (SLOT_COUNT >= 1) CXINC;
577 if (SLOT_COUNT >= 2) CXINC;
578 if (SLOT_COUNT >= 3) CXINC;
579 { 821 {
580 int i; 822 unsigned int i;
823
581 for (i = 3; i < SLOT_COUNT; ++i) 824 for (i = 0; i < SLOT_COUNT; ++i)
582 CXINC; 825 CXINC;
583 } 826
584 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 827 cxstack_ix -= SLOT_COUNT; /* undo allocation */
828 }
585 829
586 c->mainstack = PL_mainstack; 830 c->mainstack = PL_mainstack;
587 831
588 { 832 {
589 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 833 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
590 834
591 slot->defav = GvAV (PL_defgv); 835#if CORO_JIT
592 slot->defsv = DEFSV; 836 save_perl_slots (slot);
593 slot->errsv = ERRSV; 837#else
594 slot->irsgv = GvSV (irsgv);
595
596 #define VAR(name,type) slot->name = PL_ ## name; 838 #define VARx(name,expr,type) slot->name = expr;
597 # include "state.h" 839 #include "state.h"
598 #undef VAR 840#endif
599 } 841 }
600} 842}
601 843
602/* 844/*
603 * allocate various perl stacks. This is almost an exact copy 845 * allocate various perl stacks. This is almost an exact copy
604 * of perl.c:init_stacks, except that it uses less memory 846 * of perl.c:init_stacks, except that it uses less memory
605 * on the (sometimes correct) assumption that coroutines do 847 * on the (sometimes correct) assumption that coroutines do
606 * not usually need a lot of stackspace. 848 * not usually need a lot of stackspace.
607 */ 849 */
608#if CORO_PREFER_PERL_FUNCTIONS 850#if CORO_PREFER_PERL_FUNCTIONS
609# define coro_init_stacks init_stacks 851# define coro_init_stacks(thx) init_stacks ()
610#else 852#else
611static void 853static void
612coro_init_stacks (pTHX) 854coro_init_stacks (pTHX)
613{ 855{
614 PL_curstackinfo = new_stackinfo(32, 8); 856 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
615 PL_curstackinfo->si_type = PERLSI_MAIN; 857 PL_curstackinfo->si_type = PERLSI_MAIN;
616 PL_curstack = PL_curstackinfo->si_stack; 858 PL_curstack = PL_curstackinfo->si_stack;
617 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 859 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
618 860
619 PL_stack_base = AvARRAY(PL_curstack); 861 PL_stack_base = AvARRAY(PL_curstack);
… …
634#endif 876#endif
635 877
636 New(54,PL_scopestack,8,I32); 878 New(54,PL_scopestack,8,I32);
637 PL_scopestack_ix = 0; 879 PL_scopestack_ix = 0;
638 PL_scopestack_max = 8; 880 PL_scopestack_max = 8;
881#if HAS_SCOPESTACK_NAME
882 New(54,PL_scopestack_name,8,const char*);
883#endif
639 884
640 New(54,PL_savestack,24,ANY); 885 New(54,PL_savestack,24,ANY);
641 PL_savestack_ix = 0; 886 PL_savestack_ix = 0;
642 PL_savestack_max = 24; 887 PL_savestack_max = 24;
643 888
… …
671 } 916 }
672 917
673 Safefree (PL_tmps_stack); 918 Safefree (PL_tmps_stack);
674 Safefree (PL_markstack); 919 Safefree (PL_markstack);
675 Safefree (PL_scopestack); 920 Safefree (PL_scopestack);
921#if HAS_SCOPESTACK_NAME
922 Safefree (PL_scopestack_name);
923#endif
676 Safefree (PL_savestack); 924 Safefree (PL_savestack);
677#if !PERL_VERSION_ATLEAST (5,10,0) 925#if !PERL_VERSION_ATLEAST (5,10,0)
678 Safefree (PL_retstack); 926 Safefree (PL_retstack);
679#endif 927#endif
680} 928}
681 929
930#define CORO_RSS \
931 rss += sizeof (SYM (curstackinfo)); \
932 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
933 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
934 rss += SYM (tmps_max) * sizeof (SV *); \
935 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
936 rss += SYM (scopestack_max) * sizeof (I32); \
937 rss += SYM (savestack_max) * sizeof (ANY);
938
682static size_t 939static size_t
683coro_rss (pTHX_ struct coro *coro) 940coro_rss (pTHX_ struct coro *coro)
684{ 941{
685 size_t rss = sizeof (*coro); 942 size_t rss = sizeof (*coro);
686 943
687 if (coro->mainstack) 944 if (coro->mainstack)
688 { 945 {
689 perl_slots tmp_slot;
690 perl_slots *slot;
691
692 if (coro->flags & CF_RUNNING) 946 if (coro->flags & CF_RUNNING)
693 { 947 {
694 slot = &tmp_slot; 948 #define SYM(sym) PL_ ## sym
695 949 CORO_RSS;
696 #define VAR(name,type) slot->name = PL_ ## name;
697 # include "state.h"
698 #undef VAR 950 #undef SYM
699 } 951 }
700 else 952 else
701 slot = coro->slot;
702
703 if (slot)
704 { 953 {
705 rss += sizeof (slot->curstackinfo); 954 #define SYM(sym) coro->slot->sym
706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 955 CORO_RSS;
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 956 #undef SYM
708 rss += slot->tmps_max * sizeof (SV *);
709 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
710 rss += slot->scopestack_max * sizeof (I32);
711 rss += slot->savestack_max * sizeof (ANY);
712
713#if !PERL_VERSION_ATLEAST (5,10,0)
714 rss += slot->retstack_max * sizeof (OP *);
715#endif
716 } 957 }
717 } 958 }
718 959
719 return rss; 960 return rss;
720} 961}
… …
733#endif 974#endif
734 975
735/* 976/*
736 * This overrides the default magic get method of %SIG elements. 977 * This overrides the default magic get method of %SIG elements.
737 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 978 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
738 * and instead of tryign to save and restore the hash elements, we just provide 979 * and instead of trying to save and restore the hash elements (extremely slow),
739 * readback here. 980 * we just provide our own readback here.
740 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
741 * not expecting this to actually change the hook. This is a potential problem
742 * when a schedule happens then, but we ignore this.
743 */ 981 */
744static int 982static int ecb_cold
745coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 983coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
746{ 984{
747 const char *s = MgPV_nolen_const (mg); 985 const char *s = MgPV_nolen_const (mg);
748 986
749 if (*s == '_') 987 if (*s == '_')
750 { 988 {
751 SV **svp = 0; 989 SV **svp = 0;
752 990
753 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 991 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
754 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 992 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
755 993
756 if (svp) 994 if (svp)
757 { 995 {
758 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 996 SV *ssv;
997
998 if (!*svp)
999 ssv = &PL_sv_undef;
1000 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1001 ssv = sv_2mortal (newRV_inc (*svp));
1002 else
1003 ssv = *svp;
1004
1005 sv_setsv (sv, ssv);
759 return 0; 1006 return 0;
760 } 1007 }
761 } 1008 }
762 1009
763 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1010 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
764} 1011}
765 1012
766static int 1013static int ecb_cold
767coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1014coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
768{ 1015{
769 const char *s = MgPV_nolen_const (mg); 1016 const char *s = MgPV_nolen_const (mg);
770 1017
771 if (*s == '_') 1018 if (*s == '_')
… …
785 } 1032 }
786 1033
787 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1034 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
788} 1035}
789 1036
790static int 1037static int ecb_cold
791coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1038coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
792{ 1039{
793 const char *s = MgPV_nolen_const (mg); 1040 const char *s = MgPV_nolen_const (mg);
794 1041
795 if (*s == '_') 1042 if (*s == '_')
… …
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1047 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801 1048
802 if (svp) 1049 if (svp)
803 { 1050 {
804 SV *old = *svp; 1051 SV *old = *svp;
805 *svp = newSVsv (sv); 1052 *svp = SvOK (sv) ? newSVsv (sv) : 0;
806 SvREFCNT_dec (old); 1053 SvREFCNT_dec (old);
807 return 0; 1054 return 0;
808 } 1055 }
809 } 1056 }
810 1057
… …
822slf_check_nop (pTHX_ struct CoroSLF *frame) 1069slf_check_nop (pTHX_ struct CoroSLF *frame)
823{ 1070{
824 return 0; 1071 return 0;
825} 1072}
826 1073
827static void 1074static int
1075slf_check_repeat (pTHX_ struct CoroSLF *frame)
1076{
1077 return 1;
1078}
1079
1080static UNOP init_perl_op;
1081
1082ecb_noinline static void /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 1083init_perl (pTHX_ struct coro *coro)
829{ 1084{
830 /* 1085 /*
831 * emulate part of the perl startup here. 1086 * emulate part of the perl startup here.
832 */ 1087 */
833 coro_init_stacks (aTHX); 1088 coro_init_stacks (aTHX);
834 1089
835 PL_runops = RUNOPS_DEFAULT; 1090 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 1091 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 1092 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 1093 PL_comppad = 0;
1094 PL_comppad_name = 0;
1095 PL_comppad_name_fill = 0;
1096 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 1097 PL_curpm = 0;
840 PL_curpad = 0; 1098 PL_curpad = 0;
841 PL_localizing = 0; 1099 PL_localizing = 0;
842 PL_dirty = 0;
843 PL_restartop = 0; 1100 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 1101#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 1102 PL_parser = 0;
846#endif 1103#endif
1104 PL_hints = 0;
847 1105
848 /* recreate the die/warn hooks */ 1106 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1107 PL_diehook = SvREFCNT_inc (rv_diehook);
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1108 PL_warnhook = SvREFCNT_inc (rv_warnhook);
851 1109
852 GvSV (PL_defgv) = newSV (0); 1110 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 1111 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 1112 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1113 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1114 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 1115 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1116 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 1117
859 { 1118 {
860 dSP; 1119 dSP;
861 UNOP myop; 1120 UNOP myop;
862 1121
863 Zero (&myop, 1, UNOP); 1122 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 1123 myop.op_next = Nullop;
1124 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 1125 myop.op_flags = OPf_WANT_VOID;
866 1126
867 PUSHMARK (SP); 1127 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1128 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 1129 PUTBACK;
870 PL_op = (OP *)&myop; 1130 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1131 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 1132 }
874 1133
875 /* this newly created coroutine might be run on an existing cctx which most 1134 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1135 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 1136 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1137 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1138 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
880} 1139 slf_frame.destroy = 0;
881 1140
1141 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1142 init_perl_op.op_next = PL_op;
1143 init_perl_op.op_type = OP_ENTERSUB;
1144 init_perl_op.op_ppaddr = pp_slf;
1145 /* no flags etc. required, as an init function won't be called */
1146
1147 PL_op = (OP *)&init_perl_op;
1148
1149 /* copy throw, in case it was set before init_perl */
1150 CORO_THROW = coro->except;
1151
1152 SWAP_SVS (coro);
1153
1154 if (ecb_expect_false (enable_times))
1155 {
1156 coro_times_update ();
1157 coro_times_sub (coro);
1158 }
1159}
1160
882static void 1161static void
883coro_destruct (pTHX_ struct coro *coro) 1162coro_unwind_stacks (pTHX)
884{ 1163{
885 if (!IN_DESTRUCT) 1164 if (!IN_DESTRUCT)
886 { 1165 {
887 /* restore all saved variables and stuff */ 1166 /* restore all saved variables and stuff */
888 LEAVE_SCOPE (0); 1167 LEAVE_SCOPE (0);
… …
896 POPSTACK_TO (PL_mainstack); 1175 POPSTACK_TO (PL_mainstack);
897 1176
898 /* unwind main stack */ 1177 /* unwind main stack */
899 dounwind (-1); 1178 dounwind (-1);
900 } 1179 }
1180}
901 1181
902 SvREFCNT_dec (GvSV (PL_defgv)); 1182static void
903 SvREFCNT_dec (GvAV (PL_defgv)); 1183destroy_perl (pTHX_ struct coro *coro)
904 SvREFCNT_dec (GvSV (PL_errgv)); 1184{
905 SvREFCNT_dec (PL_defoutgv); 1185 SV *svf [9];
906 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv));
908 1186
909 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook);
911 1187 {
1188 SV *old_current = SvRV (coro_current);
1189 struct coro *current = SvSTATE (old_current);
1190
1191 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1192
1193 save_perl (aTHX_ current);
1194
1195 /* this will cause transfer_check to croak on block*/
1196 SvRV_set (coro_current, (SV *)coro->hv);
1197
1198 load_perl (aTHX_ coro);
1199
1200 coro_unwind_stacks (aTHX);
1201
1202 /* restore swapped sv's */
1203 SWAP_SVS (coro);
1204
1205 coro_destruct_stacks (aTHX);
1206
1207 /* now save some sv's to be free'd later */
1208 svf [0] = GvSV (PL_defgv);
1209 svf [1] = (SV *)GvAV (PL_defgv);
1210 svf [2] = GvSV (PL_errgv);
1211 svf [3] = (SV *)PL_defoutgv;
1212 svf [4] = PL_rs;
1213 svf [5] = GvSV (irsgv);
1214 svf [6] = (SV *)GvHV (PL_hintgv);
1215 svf [7] = PL_diehook;
1216 svf [8] = PL_warnhook;
1217 assert (9 == sizeof (svf) / sizeof (*svf));
1218
1219 SvRV_set (coro_current, old_current);
1220
1221 load_perl (aTHX_ current);
1222 }
1223
1224 {
1225 unsigned int i;
1226
1227 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1228 SvREFCNT_dec (svf [i]);
1229
912 SvREFCNT_dec (coro->saved_deffh); 1230 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 1231 SvREFCNT_dec (coro->rouse_cb);
914 1232 SvREFCNT_dec (coro->invoke_cb);
915 coro_destruct_stacks (aTHX); 1233 SvREFCNT_dec (coro->invoke_av);
1234 }
916} 1235}
917 1236
918INLINE void 1237ecb_inline void
919free_coro_mortal (pTHX) 1238free_coro_mortal (pTHX)
920{ 1239{
921 if (expect_true (coro_mortal)) 1240 if (ecb_expect_true (coro_mortal))
922 { 1241 {
923 SvREFCNT_dec (coro_mortal); 1242 SvREFCNT_dec ((SV *)coro_mortal);
924 coro_mortal = 0; 1243 coro_mortal = 0;
925 } 1244 }
926} 1245}
927 1246
928static int 1247static int
929runops_trace (pTHX) 1248runops_trace (pTHX)
930{ 1249{
931 COP *oldcop = 0; 1250 COP *oldcop = 0;
932 int oldcxix = -2; 1251 int oldcxix = -2;
933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 1252
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1253 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 1254 {
938 PERL_ASYNC_CHECK (); 1255 PERL_ASYNC_CHECK ();
939 1256
940 if (cctx->flags & CC_TRACE_ALL) 1257 if (cctx_current->flags & CC_TRACE_ALL)
941 { 1258 {
942 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1259 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
943 { 1260 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1261 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 1262 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1263 AV *av = newAV (); /* return values */
947 SV **cb; 1264 SV **cb;
… …
984 1301
985 if (PL_curcop != &PL_compiling) 1302 if (PL_curcop != &PL_compiling)
986 { 1303 {
987 SV **cb; 1304 SV **cb;
988 1305
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1306 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1307 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1308 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1309
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1310 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1311 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1312 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1313 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1314 SV *fullname = sv_2mortal (newSV (0));
999 1315
1000 if (isGV (gv)) 1316 if (isGV (gv))
… …
1005 SAVETMPS; 1321 SAVETMPS;
1006 EXTEND (SP, 3); 1322 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1323 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1324 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1325 PUSHs (fullname);
1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1326 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1011 PUTBACK; 1327 PUTBACK;
1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1328 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1013 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1329 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1014 SPAGAIN; 1330 SPAGAIN;
1015 FREETMPS; 1331 FREETMPS;
… …
1018 } 1334 }
1019 1335
1020 oldcxix = cxstack_ix; 1336 oldcxix = cxstack_ix;
1021 } 1337 }
1022 1338
1023 if (cctx->flags & CC_TRACE_LINE) 1339 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1340 {
1025 dSP; 1341 dSP;
1026 1342
1027 PL_runops = RUNOPS_DEFAULT; 1343 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1344 ENTER;
… …
1047 1363
1048 TAINT_NOT; 1364 TAINT_NOT;
1049 return 0; 1365 return 0;
1050} 1366}
1051 1367
1368static struct CoroSLF cctx_ssl_frame;
1369
1052static void 1370static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1371slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1372{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1373 ta->prev = 0;
1057} 1374}
1058 1375
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1376static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1377slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */
1062/* also initialises PL_top_env */
1063static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx)
1065{ 1378{
1066 dSP; 1379 *frame = cctx_ssl_frame;
1067 UNOP myop;
1068 1380
1381 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1382}
1383
1384/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1385static void ecb_noinline
1386cctx_prepare (pTHX)
1387{
1069 PL_top_env = &PL_start_env; 1388 PL_top_env = &PL_start_env;
1070 1389
1071 if (cctx->flags & CC_TRACE) 1390 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1391 PL_runops = runops_trace;
1073 1392
1074 Zero (&myop, 1, UNOP); 1393 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1394 * that can lead to creation of a new cctx */
1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1395 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1396 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1077 1397
1078 PUSHMARK (SP); 1398 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1399 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1400
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1401 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1402 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1403}
1087 1404
1088/* the tail of transfer: execute stuff we can only do after a transfer */ 1405/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void 1406ecb_inline void
1090transfer_tail (pTHX) 1407transfer_tail (pTHX)
1091{ 1408{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1409 free_coro_mortal (aTHX);
1410}
1097 1411
1098 if (expect_false (next->throw)) 1412/* try to exit the same way perl's main function would do */
1099 { 1413/* we do not bother resetting the environment or other things *7
1100 SV *exception = sv_2mortal (next->throw); 1414/* that are not, uhm, essential */
1101 1415/* this obviously also doesn't work when perl is embedded */
1102 next->throw = 0; 1416static void ecb_noinline ecb_cold
1103 sv_setsv (ERRSV, exception); 1417perlish_exit (pTHX)
1104 croak (0); 1418{
1105 } 1419 int exitstatus = perl_destruct (PL_curinterp);
1420 perl_free (PL_curinterp);
1421 exit (exitstatus);
1106} 1422}
1107 1423
1108/* 1424/*
1109 * this is a _very_ stripped down perl interpreter ;) 1425 * this is a _very_ stripped down perl interpreter ;)
1110 */ 1426 */
… …
1122 /* normally we would need to skip the entersub here */ 1438 /* normally we would need to skip the entersub here */
1123 /* not doing so will re-execute it, which is exactly what we want */ 1439 /* not doing so will re-execute it, which is exactly what we want */
1124 /* PL_nop = PL_nop->op_next */ 1440 /* PL_nop = PL_nop->op_next */
1125 1441
1126 /* inject a fake subroutine call to cctx_init */ 1442 /* inject a fake subroutine call to cctx_init */
1127 cctx_prepare (aTHX_ (coro_cctx *)arg); 1443 cctx_prepare (aTHX);
1128 1444
1129 /* cctx_run is the alternative tail of transfer() */ 1445 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX); 1446 transfer_tail (aTHX);
1132 1447
1133 /* somebody or something will hit me for both perl_run and PL_restartop */ 1448 /* somebody or something will hit me for both perl_run and PL_restartop */
1134 PL_restartop = PL_op; 1449 PL_restartop = PL_op;
1135 perl_run (PL_curinterp); 1450 perl_run (PL_curinterp);
1451 /*
1452 * Unfortunately, there is no way to get at the return values of the
1453 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1454 * runtime errors here, as this is just a random interpreter, not a thread.
1455 */
1136 1456
1137 /* 1457 /*
1138 * If perl-run returns we assume exit() was being called or the coro 1458 * If perl-run returns we assume exit() was being called or the coro
1139 * fell off the end, which seems to be the only valid (non-bug) 1459 * fell off the end, which seems to be the only valid (non-bug)
1140 * reason for perl_run to return. We try to exit by jumping to the 1460 * reason for perl_run to return. We try to mimic whatever perl is normally
1141 * bootstrap-time "top" top_env, as we cannot restore the "main" 1461 * doing in that case. YMMV.
1142 * coroutine as Coro has no such concept
1143 */ 1462 */
1144 PL_top_env = main_top_env; 1463 perlish_exit (aTHX);
1145 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1146 } 1464 }
1147} 1465}
1148 1466
1149static coro_cctx * 1467static coro_cctx *
1150cctx_new () 1468cctx_new (void)
1151{ 1469{
1152 coro_cctx *cctx; 1470 coro_cctx *cctx;
1153 1471
1154 ++cctx_count; 1472 ++cctx_count;
1155 New (0, cctx, 1, coro_cctx); 1473 New (0, cctx, 1, coro_cctx);
… …
1161 return cctx; 1479 return cctx;
1162} 1480}
1163 1481
1164/* create a new cctx only suitable as source */ 1482/* create a new cctx only suitable as source */
1165static coro_cctx * 1483static coro_cctx *
1166cctx_new_empty () 1484cctx_new_empty (void)
1167{ 1485{
1168 coro_cctx *cctx = cctx_new (); 1486 coro_cctx *cctx = cctx_new ();
1169 1487
1170 cctx->sptr = 0; 1488 cctx->stack.sptr = 0;
1171 coro_create (&cctx->cctx, 0, 0, 0, 0); 1489 coro_create (&cctx->cctx, 0, 0, 0, 0);
1172 1490
1173 return cctx; 1491 return cctx;
1174} 1492}
1175 1493
1176/* create a new cctx suitable as destination/running a perl interpreter */ 1494/* create a new cctx suitable as destination/running a perl interpreter */
1177static coro_cctx * 1495static coro_cctx *
1178cctx_new_run () 1496cctx_new_run (void)
1179{ 1497{
1180 coro_cctx *cctx = cctx_new (); 1498 coro_cctx *cctx = cctx_new ();
1181 void *stack_start;
1182 size_t stack_size;
1183 1499
1184#if HAVE_MMAP 1500 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1185 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1186 /* mmap supposedly does allocate-on-write for us */
1187 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1188
1189 if (cctx->sptr != (void *)-1)
1190 {
1191 #if CORO_STACKGUARD
1192 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1193 #endif
1194 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1195 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1196 cctx->flags |= CC_MAPPED;
1197 } 1501 {
1198 else
1199#endif
1200 {
1201 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1202 New (0, cctx->sptr, cctx_stacksize, long);
1203
1204 if (!cctx->sptr)
1205 {
1206 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1502 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1207 _exit (EXIT_FAILURE); 1503 _exit (EXIT_FAILURE);
1208 }
1209
1210 stack_start = cctx->sptr;
1211 stack_size = cctx->ssize;
1212 } 1504 }
1213 1505
1214 #if CORO_USE_VALGRIND
1215 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1216 #endif
1217
1218 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1506 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1219 1507
1220 return cctx; 1508 return cctx;
1221} 1509}
1222 1510
1223static void 1511static void
1224cctx_destroy (coro_cctx *cctx) 1512cctx_destroy (coro_cctx *cctx)
1225{ 1513{
1226 if (!cctx) 1514 if (!cctx)
1227 return; 1515 return;
1228 1516
1517 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1518
1229 --cctx_count; 1519 --cctx_count;
1230 coro_destroy (&cctx->cctx); 1520 coro_destroy (&cctx->cctx);
1231 1521
1232 /* coro_transfer creates new, empty cctx's */ 1522 coro_stack_free (&cctx->stack);
1233 if (cctx->sptr)
1234 {
1235 #if CORO_USE_VALGRIND
1236 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1237 #endif
1238
1239#if HAVE_MMAP
1240 if (cctx->flags & CC_MAPPED)
1241 munmap (cctx->sptr, cctx->ssize);
1242 else
1243#endif
1244 Safefree (cctx->sptr);
1245 }
1246 1523
1247 Safefree (cctx); 1524 Safefree (cctx);
1248} 1525}
1249 1526
1250/* wether this cctx should be destructed */ 1527/* wether this cctx should be destructed */
1251#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1528#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1252 1529
1253static coro_cctx * 1530static coro_cctx *
1254cctx_get (pTHX) 1531cctx_get (pTHX)
1255{ 1532{
1256 while (expect_true (cctx_first)) 1533 while (ecb_expect_true (cctx_first))
1257 { 1534 {
1258 coro_cctx *cctx = cctx_first; 1535 coro_cctx *cctx = cctx_first;
1259 cctx_first = cctx->next; 1536 cctx_first = cctx->next;
1260 --cctx_idle; 1537 --cctx_idle;
1261 1538
1262 if (expect_true (!CCTX_EXPIRED (cctx))) 1539 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1263 return cctx; 1540 return cctx;
1264 1541
1265 cctx_destroy (cctx); 1542 cctx_destroy (cctx);
1266 } 1543 }
1267 1544
… …
1269} 1546}
1270 1547
1271static void 1548static void
1272cctx_put (coro_cctx *cctx) 1549cctx_put (coro_cctx *cctx)
1273{ 1550{
1274 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1551 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1275 1552
1276 /* free another cctx if overlimit */ 1553 /* free another cctx if overlimit */
1277 if (expect_false (cctx_idle >= cctx_max_idle)) 1554 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1278 { 1555 {
1279 coro_cctx *first = cctx_first; 1556 coro_cctx *first = cctx_first;
1280 cctx_first = first->next; 1557 cctx_first = first->next;
1281 --cctx_idle; 1558 --cctx_idle;
1282 1559
… …
1291/** coroutine switching *****************************************************/ 1568/** coroutine switching *****************************************************/
1292 1569
1293static void 1570static void
1294transfer_check (pTHX_ struct coro *prev, struct coro *next) 1571transfer_check (pTHX_ struct coro *prev, struct coro *next)
1295{ 1572{
1573 /* TODO: throwing up here is considered harmful */
1574
1296 if (expect_true (prev != next)) 1575 if (ecb_expect_true (prev != next))
1297 { 1576 {
1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1577 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1299 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1578 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1300 1579
1301 if (expect_false (next->flags & CF_RUNNING)) 1580 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1302 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1303
1304 if (expect_false (next->flags & CF_DESTROYED))
1305 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1581 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1306 1582
1307#if !PERL_VERSION_ATLEAST (5,10,0) 1583#if !PERL_VERSION_ATLEAST (5,10,0)
1308 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1584 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1309 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1585 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1310#endif 1586#endif
1311 } 1587 }
1312} 1588}
1313 1589
1314/* always use the TRANSFER macro */ 1590/* always use the TRANSFER macro */
1315static void NOINLINE 1591static void ecb_noinline /* noinline so we have a fixed stackframe */
1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1592transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1317{ 1593{
1318 dSTACKLEVEL; 1594 dSTACKLEVEL;
1319 1595
1320 /* sometimes transfer is only called to set idle_sp */ 1596 /* sometimes transfer is only called to set idle_sp */
1321 if (expect_false (!next)) 1597 if (ecb_expect_false (!prev))
1322 { 1598 {
1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1599 cctx_current->idle_sp = STACKLEVEL;
1324 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1600 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1325 } 1601 }
1326 else if (expect_true (prev != next)) 1602 else if (ecb_expect_true (prev != next))
1327 { 1603 {
1328 coro_cctx *prev__cctx; 1604 coro_cctx *cctx_prev;
1329 1605
1330 if (expect_false (prev->flags & CF_NEW)) 1606 if (ecb_expect_false (prev->flags & CF_NEW))
1331 { 1607 {
1332 /* create a new empty/source context */ 1608 /* create a new empty/source context */
1333 prev->cctx = cctx_new_empty ();
1334 prev->flags &= ~CF_NEW; 1609 prev->flags &= ~CF_NEW;
1335 prev->flags |= CF_RUNNING; 1610 prev->flags |= CF_RUNNING;
1336 } 1611 }
1337 1612
1338 prev->flags &= ~CF_RUNNING; 1613 prev->flags &= ~CF_RUNNING;
1339 next->flags |= CF_RUNNING; 1614 next->flags |= CF_RUNNING;
1340 1615
1341 /* first get rid of the old state */ 1616 /* first get rid of the old state */
1342 save_perl (aTHX_ prev); 1617 save_perl (aTHX_ prev);
1343 1618
1344 if (expect_false (next->flags & CF_NEW)) 1619 if (ecb_expect_false (next->flags & CF_NEW))
1345 { 1620 {
1346 /* need to start coroutine */ 1621 /* need to start coroutine */
1347 next->flags &= ~CF_NEW; 1622 next->flags &= ~CF_NEW;
1348 /* setup coroutine call */ 1623 /* setup coroutine call */
1349 coro_setup (aTHX_ next); 1624 init_perl (aTHX_ next);
1350 } 1625 }
1351 else 1626 else
1352 load_perl (aTHX_ next); 1627 load_perl (aTHX_ next);
1353 1628
1354 prev__cctx = prev->cctx;
1355
1356 /* possibly untie and reuse the cctx */ 1629 /* possibly untie and reuse the cctx */
1357 if (expect_true ( 1630 if (ecb_expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel 1631 cctx_current->idle_sp == STACKLEVEL
1359 && !(prev__cctx->flags & CC_TRACE) 1632 && !(cctx_current->flags & CC_TRACE)
1360 && !force_cctx 1633 && !force_cctx
1361 )) 1634 ))
1362 { 1635 {
1363 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1636 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1364 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1637 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1365 1638
1366 prev->cctx = 0;
1367
1368 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1639 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1369 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1640 /* without this the next cctx_get might destroy the running cctx while still in use */
1370 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1641 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1371 if (!next->cctx) 1642 if (ecb_expect_true (!next->cctx))
1372 next->cctx = cctx_get (aTHX); 1643 next->cctx = cctx_get (aTHX);
1373 1644
1374 cctx_put (prev__cctx); 1645 cctx_put (cctx_current);
1375 } 1646 }
1647 else
1648 prev->cctx = cctx_current;
1376 1649
1377 ++next->usecount; 1650 ++next->usecount;
1378 1651
1379 if (expect_true (!next->cctx)) 1652 cctx_prev = cctx_current;
1380 next->cctx = cctx_get (aTHX); 1653 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1381 1654
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1655 next->cctx = 0;
1383 transfer_next = next;
1384 1656
1385 if (expect_false (prev__cctx != next->cctx)) 1657 if (ecb_expect_false (cctx_prev != cctx_current))
1386 { 1658 {
1387 prev__cctx->top_env = PL_top_env; 1659 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1660 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1661 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1662 }
1391 1663
1392 transfer_tail (aTHX); 1664 transfer_tail (aTHX);
1393 } 1665 }
1394} 1666}
… …
1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1668#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1669#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1398 1670
1399/** high level stuff ********************************************************/ 1671/** high level stuff ********************************************************/
1400 1672
1673/* this function is actually Coro, not Coro::State, but we call it from here */
1674/* because it is convenient - but it hasn't been declared yet for that reason */
1401static int 1675static void
1676coro_call_on_destroy (pTHX_ struct coro *coro);
1677
1678static void
1402coro_state_destroy (pTHX_ struct coro *coro) 1679coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1680{
1404 if (coro->flags & CF_DESTROYED) 1681 if (coro->flags & CF_ZOMBIE)
1405 return 0; 1682 return;
1406 1683
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro); 1684 slf_destroy (aTHX_ coro);
1409 1685
1410 coro->flags |= CF_DESTROYED; 1686 coro->flags |= CF_ZOMBIE;
1411 1687
1412 if (coro->flags & CF_READY) 1688 if (coro->flags & CF_READY)
1413 { 1689 {
1414 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1690 /* reduce nready, as destroying a ready coro effectively unreadies it */
1415 /* alternative: look through all ready queues and remove the coro */ 1691 /* alternative: look through all ready queues and remove the coro */
1416 --coro_nready; 1692 --coro_nready;
1417 } 1693 }
1418 else 1694 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1695 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1696
1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1422 {
1423 struct coro temp;
1424
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1426
1427 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro);
1429
1430 coro_destruct (aTHX_ coro);
1431
1432 load_perl (aTHX_ &temp);
1433
1434 coro->slot = 0;
1435 }
1436
1437 cctx_destroy (coro->cctx);
1438 SvREFCNT_dec (coro->args);
1439
1440 if (coro->next) coro->next->prev = coro->prev; 1697 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1698 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1699 if (coro == coro_first) coro_first = coro->next;
1443 1700
1444 return 1; 1701 if (coro->mainstack
1702 && coro->mainstack != main_mainstack
1703 && coro->slot
1704 && !PL_dirty)
1705 destroy_perl (aTHX_ coro);
1706
1707 cctx_destroy (coro->cctx);
1708 SvREFCNT_dec (coro->startcv);
1709 SvREFCNT_dec (coro->args);
1710 SvREFCNT_dec (coro->swap_sv);
1711 SvREFCNT_dec (CORO_THROW);
1712
1713 coro_call_on_destroy (aTHX_ coro);
1714
1715 /* more destruction mayhem in coro_state_free */
1445} 1716}
1446 1717
1447static int 1718static int
1448coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1719coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1449{ 1720{
1450 struct coro *coro = (struct coro *)mg->mg_ptr; 1721 struct coro *coro = (struct coro *)mg->mg_ptr;
1451 mg->mg_ptr = 0; 1722 mg->mg_ptr = 0;
1452 1723
1453 coro->hv = 0;
1454
1455 if (--coro->refcnt < 0)
1456 {
1457 coro_state_destroy (aTHX_ coro); 1724 coro_state_destroy (aTHX_ coro);
1725 SvREFCNT_dec (coro->on_destroy);
1726 SvREFCNT_dec (coro->status);
1727
1458 Safefree (coro); 1728 Safefree (coro);
1459 }
1460 1729
1461 return 0; 1730 return 0;
1462} 1731}
1463 1732
1464static int 1733static int ecb_cold
1465coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1734coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1466{ 1735{
1467 struct coro *coro = (struct coro *)mg->mg_ptr; 1736 /* called when perl clones the current process the slow way (windows process emulation) */
1468 1737 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1469 ++coro->refcnt; 1738 mg->mg_ptr = 0;
1739 mg->mg_virtual = 0;
1470 1740
1471 return 0; 1741 return 0;
1472} 1742}
1473 1743
1474static MGVTBL coro_state_vtbl = { 1744static MGVTBL coro_state_vtbl = {
… …
1499 TRANSFER (ta, 1); 1769 TRANSFER (ta, 1);
1500} 1770}
1501 1771
1502/** Coro ********************************************************************/ 1772/** Coro ********************************************************************/
1503 1773
1504INLINE void 1774ecb_inline void
1505coro_enq (pTHX_ struct coro *coro) 1775coro_enq (pTHX_ struct coro *coro)
1506{ 1776{
1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1777 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1508}
1509 1778
1510INLINE SV * 1779 SvREFCNT_inc_NN (coro->hv);
1780
1781 coro->next_ready = 0;
1782 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1783 ready [1] = coro;
1784}
1785
1786ecb_inline struct coro *
1511coro_deq (pTHX) 1787coro_deq (pTHX)
1512{ 1788{
1513 int prio; 1789 int prio;
1514 1790
1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1791 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1516 if (AvFILLp (coro_ready [prio]) >= 0) 1792 {
1517 return av_shift (coro_ready [prio]); 1793 struct coro **ready = coro_ready [prio];
1794
1795 if (ready [0])
1796 {
1797 struct coro *coro = ready [0];
1798 ready [0] = coro->next_ready;
1799 return coro;
1800 }
1801 }
1518 1802
1519 return 0; 1803 return 0;
1804}
1805
1806static void
1807invoke_sv_ready_hook_helper (void)
1808{
1809 dTHX;
1810 dSP;
1811
1812 ENTER;
1813 SAVETMPS;
1814
1815 PUSHMARK (SP);
1816 PUTBACK;
1817 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1818
1819 FREETMPS;
1820 LEAVE;
1520} 1821}
1521 1822
1522static int 1823static int
1523api_ready (pTHX_ SV *coro_sv) 1824api_ready (pTHX_ SV *coro_sv)
1524{ 1825{
1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1528
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1826 struct coro *coro = SvSTATE (coro_sv);
1533 1827
1534 if (coro->flags & CF_READY) 1828 if (coro->flags & CF_READY)
1535 return 0; 1829 return 0;
1536 1830
1537 coro->flags |= CF_READY; 1831 coro->flags |= CF_READY;
1538 1832
1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro); 1833 coro_enq (aTHX_ coro);
1543 ++coro_nready;
1544 1834
1545 if (sv_hook) 1835 if (!coro_nready++)
1546 { 1836 if (coroapi.readyhook)
1547 dSP; 1837 coroapi.readyhook ();
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD);
1555 SPAGAIN;
1556
1557 FREETMPS;
1558 LEAVE;
1559 }
1560
1561 if (xs_hook)
1562 xs_hook ();
1563 1838
1564 return 1; 1839 return 1;
1565} 1840}
1566 1841
1567static int 1842static int
1568api_is_ready (pTHX_ SV *coro_sv) 1843api_is_ready (pTHX_ SV *coro_sv)
1569{ 1844{
1570 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1845 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1571} 1846}
1572 1847
1573INLINE void 1848/* expects to own a reference to next->hv */
1849ecb_inline void
1574prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1850prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1575{ 1851{
1576 SV *prev_sv, *next_sv;
1577
1578 for (;;)
1579 {
1580 next_sv = coro_deq (aTHX);
1581
1582 /* nothing to schedule: call the idle handler */
1583 if (expect_false (!next_sv))
1584 {
1585 dSP;
1586
1587 ENTER;
1588 SAVETMPS;
1589
1590 PUSHMARK (SP);
1591 PUTBACK;
1592 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1593 SPAGAIN;
1594
1595 FREETMPS;
1596 LEAVE;
1597 continue;
1598 }
1599
1600 ta->next = SvSTATE_hv (next_sv);
1601
1602 /* cannot transfer to destroyed coros, skip and look for next */
1603 if (expect_false (ta->next->flags & CF_DESTROYED))
1604 {
1605 SvREFCNT_dec (next_sv);
1606 /* coro_nready has already been taken care of by destroy */
1607 continue;
1608 }
1609
1610 --coro_nready;
1611 break;
1612 }
1613
1614 /* free this only after the transfer */
1615 prev_sv = SvRV (coro_current); 1852 SV *prev_sv = SvRV (coro_current);
1853
1616 ta->prev = SvSTATE_hv (prev_sv); 1854 ta->prev = SvSTATE_hv (prev_sv);
1855 ta->next = next;
1856
1617 TRANSFER_CHECK (*ta); 1857 TRANSFER_CHECK (*ta);
1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1858
1619 ta->next->flags &= ~CF_READY;
1620 SvRV_set (coro_current, next_sv); 1859 SvRV_set (coro_current, (SV *)next->hv);
1621 1860
1622 free_coro_mortal (aTHX); 1861 free_coro_mortal (aTHX);
1623 coro_mortal = prev_sv; 1862 coro_mortal = prev_sv;
1624} 1863}
1625 1864
1626INLINE void 1865static void
1866prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1867{
1868 for (;;)
1869 {
1870 struct coro *next = coro_deq (aTHX);
1871
1872 if (ecb_expect_true (next))
1873 {
1874 /* cannot transfer to destroyed coros, skip and look for next */
1875 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1876 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1877 else
1878 {
1879 next->flags &= ~CF_READY;
1880 --coro_nready;
1881
1882 prepare_schedule_to (aTHX_ ta, next);
1883 break;
1884 }
1885 }
1886 else
1887 {
1888 /* nothing to schedule: call the idle handler */
1889 if (SvROK (sv_idle)
1890 && SvOBJECT (SvRV (sv_idle)))
1891 {
1892 if (SvRV (sv_idle) == SvRV (coro_current))
1893 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1894
1895 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1896 api_ready (aTHX_ SvRV (sv_idle));
1897 --coro_nready;
1898 }
1899 else
1900 {
1901 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1902 dSP;
1903
1904 ENTER;
1905 SAVETMPS;
1906
1907 PUSHMARK (SP);
1908 PUTBACK;
1909 call_sv (sv_idle, G_VOID | G_DISCARD);
1910
1911 FREETMPS;
1912 LEAVE;
1913 }
1914 }
1915 }
1916}
1917
1918ecb_inline void
1627prepare_cede (pTHX_ struct coro_transfer_args *ta) 1919prepare_cede (pTHX_ struct coro_transfer_args *ta)
1628{ 1920{
1629 api_ready (aTHX_ coro_current); 1921 api_ready (aTHX_ coro_current);
1630 prepare_schedule (aTHX_ ta); 1922 prepare_schedule (aTHX_ ta);
1631} 1923}
1632 1924
1633INLINE void 1925ecb_inline void
1634prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1926prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1635{ 1927{
1636 SV *prev = SvRV (coro_current); 1928 SV *prev = SvRV (coro_current);
1637 1929
1638 if (coro_nready) 1930 if (coro_nready)
… …
1651 1943
1652 prepare_schedule (aTHX_ &ta); 1944 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1); 1945 TRANSFER (ta, 1);
1654} 1946}
1655 1947
1948static void
1949api_schedule_to (pTHX_ SV *coro_sv)
1950{
1951 struct coro_transfer_args ta;
1952 struct coro *next = SvSTATE (coro_sv);
1953
1954 SvREFCNT_inc_NN (coro_sv);
1955 prepare_schedule_to (aTHX_ &ta, next);
1956}
1957
1656static int 1958static int
1657api_cede (pTHX) 1959api_cede (pTHX)
1658{ 1960{
1659 struct coro_transfer_args ta; 1961 struct coro_transfer_args ta;
1660 1962
1661 prepare_cede (aTHX_ &ta); 1963 prepare_cede (aTHX_ &ta);
1662 1964
1663 if (expect_true (ta.prev != ta.next)) 1965 if (ecb_expect_true (ta.prev != ta.next))
1664 { 1966 {
1665 TRANSFER (ta, 1); 1967 TRANSFER (ta, 1);
1666 return 1; 1968 return 1;
1667 } 1969 }
1668 else 1970 else
… …
1687static void 1989static void
1688api_trace (pTHX_ SV *coro_sv, int flags) 1990api_trace (pTHX_ SV *coro_sv, int flags)
1689{ 1991{
1690 struct coro *coro = SvSTATE (coro_sv); 1992 struct coro *coro = SvSTATE (coro_sv);
1691 1993
1994 if (coro->flags & CF_RUNNING)
1995 croak ("cannot enable tracing on a running coroutine, caught");
1996
1692 if (flags & CC_TRACE) 1997 if (flags & CC_TRACE)
1693 { 1998 {
1694 if (!coro->cctx) 1999 if (!coro->cctx)
1695 coro->cctx = cctx_new_run (); 2000 coro->cctx = cctx_new_run ();
1696 else if (!(coro->cctx->flags & CC_TRACE)) 2001 else if (!(coro->cctx->flags & CC_TRACE))
1697 croak ("cannot enable tracing on coroutine with custom stack,"); 2002 croak ("cannot enable tracing on coroutine with custom stack, caught");
1698 2003
1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2004 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1700 } 2005 }
1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2006 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1702 { 2007 {
… …
1707 else 2012 else
1708 coro->slot->runops = RUNOPS_DEFAULT; 2013 coro->slot->runops = RUNOPS_DEFAULT;
1709 } 2014 }
1710} 2015}
1711 2016
2017static void
2018coro_push_av (pTHX_ AV *av, I32 gimme_v)
2019{
2020 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2021 {
2022 dSP;
2023
2024 if (gimme_v == G_SCALAR)
2025 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2026 else
2027 {
2028 int i;
2029 EXTEND (SP, AvFILLp (av) + 1);
2030
2031 for (i = 0; i <= AvFILLp (av); ++i)
2032 PUSHs (AvARRAY (av)[i]);
2033 }
2034
2035 PUTBACK;
2036 }
2037}
2038
2039static void
2040coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2041{
2042 if (!coro->on_destroy)
2043 coro->on_destroy = newAV ();
2044
2045 av_push (coro->on_destroy, cb);
2046}
2047
2048static void
2049slf_destroy_join (pTHX_ struct CoroSLF *frame)
2050{
2051 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2052}
2053
2054static int
2055slf_check_join (pTHX_ struct CoroSLF *frame)
2056{
2057 struct coro *coro = (struct coro *)frame->data;
2058
2059 if (!coro->status)
2060 return 1;
2061
2062 frame->destroy = 0;
2063
2064 coro_push_av (aTHX_ coro->status, GIMME_V);
2065
2066 SvREFCNT_dec ((SV *)coro->hv);
2067
2068 return 0;
2069}
2070
2071static void
2072slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2073{
2074 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2075
2076 if (items > 1)
2077 croak ("join called with too many arguments");
2078
2079 if (coro->status)
2080 frame->prepare = prepare_nop;
2081 else
2082 {
2083 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2084 frame->prepare = prepare_schedule;
2085 }
2086
2087 frame->check = slf_check_join;
2088 frame->destroy = slf_destroy_join;
2089 frame->data = (void *)coro;
2090 SvREFCNT_inc (coro->hv);
2091}
2092
2093static void
2094coro_call_on_destroy (pTHX_ struct coro *coro)
2095{
2096 AV *od = coro->on_destroy;
2097
2098 if (!od)
2099 return;
2100
2101 coro->on_destroy = 0;
2102 sv_2mortal ((SV *)od);
2103
2104 while (AvFILLp (od) >= 0)
2105 {
2106 SV *cb = sv_2mortal (av_pop (od));
2107
2108 /* coro hv's (and only hv's at the moment) are supported as well */
2109 if (SvSTATEhv_p (aTHX_ cb))
2110 api_ready (aTHX_ cb);
2111 else
2112 {
2113 dSP; /* don't disturb outer sp */
2114 PUSHMARK (SP);
2115
2116 if (coro->status)
2117 {
2118 PUTBACK;
2119 coro_push_av (aTHX_ coro->status, G_ARRAY);
2120 SPAGAIN;
2121 }
2122
2123 PUTBACK;
2124 call_sv (cb, G_VOID | G_DISCARD);
2125 }
2126 }
2127}
2128
2129static void
2130coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2131{
2132 AV *av;
2133
2134 if (coro->status)
2135 {
2136 av = coro->status;
2137 av_clear (av);
2138 }
2139 else
2140 av = coro->status = newAV ();
2141
2142 /* items are actually not so common, so optimise for this case */
2143 if (items)
2144 {
2145 int i;
2146
2147 av_extend (av, items - 1);
2148
2149 for (i = 0; i < items; ++i)
2150 av_push (av, SvREFCNT_inc_NN (arg [i]));
2151 }
2152}
2153
2154static void
2155slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2156{
2157 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2158 api_ready (aTHX_ sv_manager);
2159
2160 frame->prepare = prepare_schedule;
2161 frame->check = slf_check_repeat;
2162
2163 /* as a minor optimisation, we could unwind all stacks here */
2164 /* but that puts extra pressure on pp_slf, and is not worth much */
2165 /*coro_unwind_stacks (aTHX);*/
2166}
2167
2168static void
2169slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2170{
2171 HV *coro_hv = (HV *)SvRV (coro_current);
2172
2173 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2174 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2175}
2176
2177static void
2178slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2179{
2180 HV *coro_hv;
2181 struct coro *coro;
2182
2183 if (items <= 0)
2184 croak ("Coro::cancel called without coro object,");
2185
2186 coro = SvSTATE (arg [0]);
2187 coro_hv = coro->hv;
2188
2189 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2190
2191 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2192 {
2193 /* coro currently busy cancelling something, so just notify it */
2194 coro->slf_frame.data = (void *)coro;
2195
2196 frame->prepare = prepare_nop;
2197 frame->check = slf_check_nop;
2198 }
2199 else if (coro_hv == (HV *)SvRV (coro_current))
2200 {
2201 /* cancelling the current coro is allowed, and equals terminate */
2202 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2203 }
2204 else
2205 {
2206 struct coro *self = SvSTATE_current;
2207
2208 /* otherwise we cancel directly, purely for speed reasons
2209 * unfortunately, this requires some magic trickery, as
2210 * somebody else could cancel us, so we have to fight the cancellation.
2211 * this is ugly, and hopefully fully worth the extra speed.
2212 * besides, I can't get the slow-but-safe version working...
2213 */
2214 slf_frame.data = 0;
2215 self->flags |= CF_NOCANCEL;
2216 coro_state_destroy (aTHX_ coro);
2217 self->flags &= ~CF_NOCANCEL;
2218
2219 if (slf_frame.data)
2220 {
2221 /* while we were busy we have been cancelled, so terminate */
2222 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2223 }
2224 else
2225 {
2226 frame->prepare = prepare_nop;
2227 frame->check = slf_check_nop;
2228 }
2229 }
2230}
2231
2232static int
2233slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2234{
2235 frame->prepare = 0;
2236 coro_unwind_stacks (aTHX);
2237
2238 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2239
2240 return 1;
2241}
2242
2243static int
2244safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2245{
2246 if (coro->cctx)
2247 croak ("coro inside C callback, unable to cancel at this time, caught");
2248
2249 if (coro->flags & CF_NEW)
2250 {
2251 coro_set_status (aTHX_ coro, arg, items);
2252 coro_state_destroy (aTHX_ coro);
2253 }
2254 else
2255 {
2256 if (!coro->slf_frame.prepare)
2257 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2258
2259 slf_destroy (aTHX_ coro);
2260
2261 coro_set_status (aTHX_ coro, arg, items);
2262 coro->slf_frame.prepare = prepare_nop;
2263 coro->slf_frame.check = slf_check_safe_cancel;
2264
2265 api_ready (aTHX_ (SV *)coro->hv);
2266 }
2267
2268 return 1;
2269}
2270
2271/*****************************************************************************/
2272/* async pool handler */
2273
2274static int
2275slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2276{
2277 HV *hv = (HV *)SvRV (coro_current);
2278 struct coro *coro = (struct coro *)frame->data;
2279
2280 if (!coro->invoke_cb)
2281 return 1; /* loop till we have invoke */
2282 else
2283 {
2284 hv_store (hv, "desc", sizeof ("desc") - 1,
2285 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2286
2287 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2288
2289 {
2290 dSP;
2291 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2292 PUTBACK;
2293 }
2294
2295 SvREFCNT_dec (GvAV (PL_defgv));
2296 GvAV (PL_defgv) = coro->invoke_av;
2297 coro->invoke_av = 0;
2298
2299 return 0;
2300 }
2301}
2302
2303static void
2304slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2305{
2306 HV *hv = (HV *)SvRV (coro_current);
2307 struct coro *coro = SvSTATE_hv ((SV *)hv);
2308
2309 if (ecb_expect_true (coro->saved_deffh))
2310 {
2311 /* subsequent iteration */
2312 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2313 coro->saved_deffh = 0;
2314
2315 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2316 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2317 {
2318 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2319 return;
2320 }
2321 else
2322 {
2323 av_clear (GvAV (PL_defgv));
2324 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2325
2326 coro->prio = 0;
2327
2328 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2329 api_trace (aTHX_ coro_current, 0);
2330
2331 frame->prepare = prepare_schedule;
2332 av_push (av_async_pool, SvREFCNT_inc (hv));
2333 }
2334 }
2335 else
2336 {
2337 /* first iteration, simply fall through */
2338 frame->prepare = prepare_nop;
2339 }
2340
2341 frame->check = slf_check_pool_handler;
2342 frame->data = (void *)coro;
2343}
2344
2345/*****************************************************************************/
2346/* rouse callback */
2347
2348#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2349
2350static void
2351coro_rouse_callback (pTHX_ CV *cv)
2352{
2353 dXSARGS;
2354 SV *data = (SV *)S_GENSUB_ARG;
2355
2356 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2357 {
2358 /* first call, set args */
2359 SV *coro = SvRV (data);
2360 AV *av = newAV ();
2361
2362 SvRV_set (data, (SV *)av);
2363
2364 /* better take a full copy of the arguments */
2365 while (items--)
2366 av_store (av, items, newSVsv (ST (items)));
2367
2368 api_ready (aTHX_ coro);
2369 SvREFCNT_dec (coro);
2370 }
2371
2372 XSRETURN_EMPTY;
2373}
2374
2375static int
2376slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2377{
2378 SV *data = (SV *)frame->data;
2379
2380 if (CORO_THROW)
2381 return 0;
2382
2383 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2384 return 1;
2385
2386 /* now push all results on the stack */
2387 {
2388 dSP;
2389 AV *av = (AV *)SvRV (data);
2390 int i;
2391
2392 EXTEND (SP, AvFILLp (av) + 1);
2393 for (i = 0; i <= AvFILLp (av); ++i)
2394 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2395
2396 /* we have stolen the elements, so set length to zero and free */
2397 AvFILLp (av) = -1;
2398 av_undef (av);
2399
2400 PUTBACK;
2401 }
2402
2403 return 0;
2404}
2405
2406static void
2407slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2408{
2409 SV *cb;
2410
2411 if (items)
2412 cb = arg [0];
2413 else
2414 {
2415 struct coro *coro = SvSTATE_current;
2416
2417 if (!coro->rouse_cb)
2418 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2419
2420 cb = sv_2mortal (coro->rouse_cb);
2421 coro->rouse_cb = 0;
2422 }
2423
2424 if (!SvROK (cb)
2425 || SvTYPE (SvRV (cb)) != SVt_PVCV
2426 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2427 croak ("Coro::rouse_wait called with illegal callback argument,");
2428
2429 {
2430 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2431 SV *data = (SV *)S_GENSUB_ARG;
2432
2433 frame->data = (void *)data;
2434 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2435 frame->check = slf_check_rouse_wait;
2436 }
2437}
2438
2439static SV *
2440coro_new_rouse_cb (pTHX)
2441{
2442 HV *hv = (HV *)SvRV (coro_current);
2443 struct coro *coro = SvSTATE_hv (hv);
2444 SV *data = newRV_inc ((SV *)hv);
2445 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2446
2447 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2448 SvREFCNT_dec (data); /* magicext increases the refcount */
2449
2450 SvREFCNT_dec (coro->rouse_cb);
2451 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2452
2453 return cb;
2454}
2455
2456/*****************************************************************************/
2457/* schedule-like-function opcode (SLF) */
2458
2459static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2460static const CV *slf_cv;
2461static SV **slf_argv;
2462static int slf_argc, slf_arga; /* count, allocated */
2463static I32 slf_ax; /* top of stack, for restore */
2464
2465/* this restores the stack in the case we patched the entersub, to */
2466/* recreate the stack frame as perl will on following calls */
2467/* since entersub cleared the stack */
2468static OP *
2469pp_restore (pTHX)
2470{
2471 int i;
2472 SV **SP = PL_stack_base + slf_ax;
2473
2474 PUSHMARK (SP);
2475
2476 EXTEND (SP, slf_argc + 1);
2477
2478 for (i = 0; i < slf_argc; ++i)
2479 PUSHs (sv_2mortal (slf_argv [i]));
2480
2481 PUSHs ((SV *)CvGV (slf_cv));
2482
2483 RETURNOP (slf_restore.op_first);
2484}
2485
2486static void
2487slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2488{
2489 SV **arg = (SV **)slf_frame.data;
2490
2491 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2492}
2493
2494static void
2495slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2496{
2497 if (items != 2)
2498 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2499
2500 frame->prepare = slf_prepare_transfer;
2501 frame->check = slf_check_nop;
2502 frame->data = (void *)arg; /* let's hope it will stay valid */
2503}
2504
2505static void
2506slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2507{
2508 frame->prepare = prepare_schedule;
2509 frame->check = slf_check_nop;
2510}
2511
2512static void
2513slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2514{
2515 struct coro *next = (struct coro *)slf_frame.data;
2516
2517 SvREFCNT_inc_NN (next->hv);
2518 prepare_schedule_to (aTHX_ ta, next);
2519}
2520
2521static void
2522slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2523{
2524 if (!items)
2525 croak ("Coro::schedule_to expects a coroutine argument, caught");
2526
2527 frame->data = (void *)SvSTATE (arg [0]);
2528 frame->prepare = slf_prepare_schedule_to;
2529 frame->check = slf_check_nop;
2530}
2531
2532static void
2533slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2534{
2535 api_ready (aTHX_ SvRV (coro_current));
2536
2537 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2538}
2539
2540static void
2541slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2542{
2543 frame->prepare = prepare_cede;
2544 frame->check = slf_check_nop;
2545}
2546
2547static void
2548slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2549{
2550 frame->prepare = prepare_cede_notself;
2551 frame->check = slf_check_nop;
2552}
2553
2554/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2555static void
2556slf_destroy (pTHX_ struct coro *coro)
2557{
2558 /* this callback is reserved for slf functions needing to do cleanup */
2559 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2560 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2561
2562 /*
2563 * The on_destroy above most likely is from an SLF call.
2564 * Since by definition the SLF call will not finish when we destroy
2565 * the coro, we will have to force-finish it here, otherwise
2566 * cleanup functions cannot call SLF functions.
2567 */
2568 coro->slf_frame.prepare = 0;
2569}
2570
2571/*
2572 * these not obviously related functions are all rolled into one
2573 * function to increase chances that they all will call transfer with the same
2574 * stack offset
2575 * SLF stands for "schedule-like-function".
2576 */
2577static OP *
2578pp_slf (pTHX)
2579{
2580 I32 checkmark; /* mark SP to see how many elements check has pushed */
2581
2582 /* set up the slf frame, unless it has already been set-up */
2583 /* the latter happens when a new coro has been started */
2584 /* or when a new cctx was attached to an existing coroutine */
2585 if (ecb_expect_true (!slf_frame.prepare))
2586 {
2587 /* first iteration */
2588 dSP;
2589 SV **arg = PL_stack_base + TOPMARK + 1;
2590 int items = SP - arg; /* args without function object */
2591 SV *gv = *sp;
2592
2593 /* do a quick consistency check on the "function" object, and if it isn't */
2594 /* for us, divert to the real entersub */
2595 if (SvTYPE (gv) != SVt_PVGV
2596 || !GvCV (gv)
2597 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2598 return PL_ppaddr[OP_ENTERSUB](aTHX);
2599
2600 if (!(PL_op->op_flags & OPf_STACKED))
2601 {
2602 /* ampersand-form of call, use @_ instead of stack */
2603 AV *av = GvAV (PL_defgv);
2604 arg = AvARRAY (av);
2605 items = AvFILLp (av) + 1;
2606 }
2607
2608 /* now call the init function, which needs to set up slf_frame */
2609 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2610 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2611
2612 /* pop args */
2613 SP = PL_stack_base + POPMARK;
2614
2615 PUTBACK;
2616 }
2617
2618 /* now that we have a slf_frame, interpret it! */
2619 /* we use a callback system not to make the code needlessly */
2620 /* complicated, but so we can run multiple perl coros from one cctx */
2621
2622 do
2623 {
2624 struct coro_transfer_args ta;
2625
2626 slf_frame.prepare (aTHX_ &ta);
2627 TRANSFER (ta, 0);
2628
2629 checkmark = PL_stack_sp - PL_stack_base;
2630 }
2631 while (slf_frame.check (aTHX_ &slf_frame));
2632
2633 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2634
2635 /* exception handling */
2636 if (ecb_expect_false (CORO_THROW))
2637 {
2638 SV *exception = sv_2mortal (CORO_THROW);
2639
2640 CORO_THROW = 0;
2641 sv_setsv (ERRSV, exception);
2642 croak (0);
2643 }
2644
2645 /* return value handling - mostly like entersub */
2646 /* make sure we put something on the stack in scalar context */
2647 if (GIMME_V == G_SCALAR
2648 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2649 {
2650 dSP;
2651 SV **bot = PL_stack_base + checkmark;
2652
2653 if (sp == bot) /* too few, push undef */
2654 bot [1] = &PL_sv_undef;
2655 else /* too many, take last one */
2656 bot [1] = *sp;
2657
2658 SP = bot + 1;
2659
2660 PUTBACK;
2661 }
2662
2663 return NORMAL;
2664}
2665
2666static void
2667api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2668{
2669 int i;
2670 SV **arg = PL_stack_base + ax;
2671 int items = PL_stack_sp - arg + 1;
2672
2673 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2674
2675 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2676 && PL_op->op_ppaddr != pp_slf)
2677 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2678
2679 CvFLAGS (cv) |= CVf_SLF;
2680 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2681 slf_cv = cv;
2682
2683 /* we patch the op, and then re-run the whole call */
2684 /* we have to put the same argument on the stack for this to work */
2685 /* and this will be done by pp_restore */
2686 slf_restore.op_next = (OP *)&slf_restore;
2687 slf_restore.op_type = OP_CUSTOM;
2688 slf_restore.op_ppaddr = pp_restore;
2689 slf_restore.op_first = PL_op;
2690
2691 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2692
2693 if (PL_op->op_flags & OPf_STACKED)
2694 {
2695 if (items > slf_arga)
2696 {
2697 slf_arga = items;
2698 Safefree (slf_argv);
2699 New (0, slf_argv, slf_arga, SV *);
2700 }
2701
2702 slf_argc = items;
2703
2704 for (i = 0; i < items; ++i)
2705 slf_argv [i] = SvREFCNT_inc (arg [i]);
2706 }
2707 else
2708 slf_argc = 0;
2709
2710 PL_op->op_ppaddr = pp_slf;
2711 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2712
2713 PL_op = (OP *)&slf_restore;
2714}
2715
2716/*****************************************************************************/
2717/* dynamic wind */
2718
2719static void
2720on_enterleave_call (pTHX_ SV *cb)
2721{
2722 dSP;
2723
2724 PUSHSTACK;
2725
2726 PUSHMARK (SP);
2727 PUTBACK;
2728 call_sv (cb, G_VOID | G_DISCARD);
2729 SPAGAIN;
2730
2731 POPSTACK;
2732}
2733
2734static SV *
2735coro_avp_pop_and_free (pTHX_ AV **avp)
2736{
2737 AV *av = *avp;
2738 SV *res = av_pop (av);
2739
2740 if (AvFILLp (av) < 0)
2741 {
2742 *avp = 0;
2743 SvREFCNT_dec (av);
2744 }
2745
2746 return res;
2747}
2748
2749static void
2750coro_pop_on_enter (pTHX_ void *coro)
2751{
2752 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2753 SvREFCNT_dec (cb);
2754}
2755
2756static void
2757coro_pop_on_leave (pTHX_ void *coro)
2758{
2759 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2760 on_enterleave_call (aTHX_ sv_2mortal (cb));
2761}
2762
1712/*****************************************************************************/ 2763/*****************************************************************************/
1713/* PerlIO::cede */ 2764/* PerlIO::cede */
1714 2765
1715typedef struct 2766typedef struct
1716{ 2767{
1717 PerlIOBuf base; 2768 PerlIOBuf base;
1718 NV next, every; 2769 NV next, every;
1719} PerlIOCede; 2770} PerlIOCede;
1720 2771
1721static IV 2772static IV ecb_cold
1722PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2773PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1723{ 2774{
1724 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2775 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1725 2776
1726 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2777 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1727 self->next = nvtime () + self->every; 2778 self->next = nvtime () + self->every;
1728 2779
1729 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2780 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1730} 2781}
1731 2782
1732static SV * 2783static SV * ecb_cold
1733PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2784PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1734{ 2785{
1735 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2786 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1736 2787
1737 return newSVnv (self->every); 2788 return newSVnv (self->every);
… …
1783 PerlIOBuf_get_cnt, 2834 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt, 2835 PerlIOBuf_set_ptrcnt,
1785}; 2836};
1786 2837
1787/*****************************************************************************/ 2838/*****************************************************************************/
2839/* Coro::Semaphore & Coro::Signal */
1788 2840
1789static const CV *slf_cv; /* for quick consistency check */
1790
1791static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792static SV *slf_arg0;
1793static SV *slf_arg1;
1794static SV *slf_arg2;
1795
1796/* this restores the stack in the case we patched the entersub, to */
1797/* recreate the stack frame as perl will on following calls */
1798/* since entersub cleared the stack */
1799static OP * 2841static SV *
1800pp_restore (pTHX) 2842coro_waitarray_new (pTHX_ int count)
1801{ 2843{
1802 dSP; 2844 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2845 AV *av = newAV ();
2846 SV **ary;
1803 2847
1804 PUSHMARK (SP); 2848 /* unfortunately, building manually saves memory */
2849 Newx (ary, 2, SV *);
2850 AvALLOC (av) = ary;
2851#if PERL_VERSION_ATLEAST (5,10,0)
2852 AvARRAY (av) = ary;
2853#else
2854 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2855 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2856 SvPVX ((SV *)av) = (char *)ary;
2857#endif
2858 AvMAX (av) = 1;
2859 AvFILLp (av) = 0;
2860 ary [0] = newSViv (count);
1805 2861
1806 EXTEND (SP, 3); 2862 return newRV_noinc ((SV *)av);
1807 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810 PUSHs ((SV *)CvGV (slf_cv));
1811
1812 RETURNOP (slf_restore.op_first);
1813} 2863}
1814 2864
1815static void 2865/* semaphore */
1816slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817{
1818 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819}
1820 2866
1821static void 2867static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990
1991static void
1992coro_semaphore_adjust (pTHX_ AV *av, int adjust) 2868coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{ 2869{
1994 SV *count_sv = AvARRAY (av)[0]; 2870 SV *count_sv = AvARRAY (av)[0];
1995 IV count = SvIVX (count_sv); 2871 IV count = SvIVX (count_sv);
1996 2872
1997 count += adjust; 2873 count += adjust;
1998 SvIVX (count_sv) = count; 2874 SvIVX (count_sv) = count;
1999 2875
2000 /* now wake up as many waiters as possible */ 2876 /* now wake up as many waiters as are expected to lock */
2001 while (count > 0 && AvFILLp (av) >= count) 2877 while (count > 0 && AvFILLp (av) > 0)
2002 { 2878 {
2003 SV *cb; 2879 SV *cb;
2004 2880
2005 /* swap first two elements so we can shift a waiter */ 2881 /* swap first two elements so we can shift a waiter */
2006 AvARRAY (av)[0] = AvARRAY (av)[1]; 2882 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv; 2883 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av); 2884 cb = av_shift (av);
2009 2885
2010 if (SvOBJECT (cb)) 2886 if (SvOBJECT (cb))
2887 {
2011 api_ready (aTHX_ cb); 2888 api_ready (aTHX_ cb);
2012 else 2889 --count;
2013 croak ("callbacks not yet supported"); 2890 }
2891 else if (SvTYPE (cb) == SVt_PVCV)
2892 {
2893 dSP;
2894 PUSHMARK (SP);
2895 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2896 PUTBACK;
2897 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2898 }
2014 2899
2015 SvREFCNT_dec (cb); 2900 SvREFCNT_dec (cb);
2016
2017 --count;
2018 } 2901 }
2019} 2902}
2020 2903
2021static void 2904static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2905coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2023{ 2906{
2024 /* call $sem->adjust (0) to possibly wake up some waiters */ 2907 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2908 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2026} 2909}
2027 2910
2028static int 2911static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2912slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2030{ 2913{
2031 AV *av = (AV *)frame->data; 2914 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0]; 2915 SV *count_sv = AvARRAY (av)[0];
2916 SV *coro_hv = SvRV (coro_current);
2033 2917
2918 /* if we are about to throw, don't actually acquire the lock, just throw */
2919 if (CORO_THROW)
2920 return 0;
2034 if (SvIVX (count_sv) > 0) 2921 else if (SvIVX (count_sv) > 0)
2035 { 2922 {
2036 SvSTATE_current->on_destroy = 0; 2923 frame->destroy = 0;
2924
2925 if (acquire)
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2926 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2927 else
2928 coro_semaphore_adjust (aTHX_ av, 0);
2929
2038 return 0; 2930 return 0;
2039 } 2931 }
2040 else 2932 else
2041 { 2933 {
2042 int i; 2934 int i;
2043 /* if we were woken up but can't down, we look through the whole */ 2935 /* if we were woken up but can't down, we look through the whole */
2044 /* waiters list and only add us if we aren't in there already */ 2936 /* waiters list and only add us if we aren't in there already */
2045 /* this avoids some degenerate memory usage cases */ 2937 /* this avoids some degenerate memory usage cases */
2046 2938 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2047 for (i = 1; i <= AvFILLp (av); ++i)
2048 if (AvARRAY (av)[i] == SvRV (coro_current)) 2939 if (AvARRAY (av)[i] == coro_hv)
2049 return 1; 2940 return 1;
2050 2941
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2942 av_push (av, SvREFCNT_inc (coro_hv));
2052 return 1; 2943 return 1;
2053 } 2944 }
2054} 2945}
2055 2946
2056static void 2947static int
2948slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2949{
2950 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2951}
2952
2953static int
2954slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2955{
2956 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2957}
2958
2959static void
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2960slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{ 2961{
2059 AV *av = (AV *)SvRV (arg [0]); 2962 AV *av = (AV *)SvRV (arg [0]);
2060 2963
2061 if (SvIVX (AvARRAY (av)[0]) > 0) 2964 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 { 2965 {
… …
2067 { 2970 {
2068 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2971 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2069 2972
2070 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2973 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2071 frame->prepare = prepare_schedule; 2974 frame->prepare = prepare_schedule;
2072
2073 /* to avoid race conditions when a woken-up coro gets terminated */ 2975 /* to avoid race conditions when a woken-up coro gets terminated */
2074 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2976 /* we arrange for a temporary on_destroy that calls adjust (0) */
2075 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2977 frame->destroy = coro_semaphore_destroy;
2076 } 2978 }
2979}
2077 2980
2981static void
2982slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2983{
2984 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2078 frame->check = slf_check_semaphore_down; 2985 frame->check = slf_check_semaphore_down;
2986}
2079 2987
2988static void
2989slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2990{
2991 if (items >= 2)
2992 {
2993 /* callback form */
2994 AV *av = (AV *)SvRV (arg [0]);
2995 SV *cb_cv = s_get_cv_croak (arg [1]);
2996
2997 av_push (av, SvREFCNT_inc_NN (cb_cv));
2998
2999 if (SvIVX (AvARRAY (av)[0]) > 0)
3000 coro_semaphore_adjust (aTHX_ av, 0);
3001
3002 frame->prepare = prepare_nop;
3003 frame->check = slf_check_nop;
3004 }
3005 else
3006 {
3007 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3008 frame->check = slf_check_semaphore_wait;
3009 }
3010}
3011
3012/* signal */
3013
3014static void
3015coro_signal_wake (pTHX_ AV *av, int count)
3016{
3017 SvIVX (AvARRAY (av)[0]) = 0;
3018
3019 /* now signal count waiters */
3020 while (count > 0 && AvFILLp (av) > 0)
3021 {
3022 SV *cb;
3023
3024 /* swap first two elements so we can shift a waiter */
3025 cb = AvARRAY (av)[0];
3026 AvARRAY (av)[0] = AvARRAY (av)[1];
3027 AvARRAY (av)[1] = cb;
3028
3029 cb = av_shift (av);
3030
3031 if (SvTYPE (cb) == SVt_PVCV)
3032 {
3033 dSP;
3034 PUSHMARK (SP);
3035 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3036 PUTBACK;
3037 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3038 }
3039 else
3040 {
3041 api_ready (aTHX_ cb);
3042 sv_setiv (cb, 0); /* signal waiter */
3043 }
3044
3045 SvREFCNT_dec (cb);
3046
3047 --count;
3048 }
3049}
3050
3051static int
3052slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3053{
3054 /* if we are about to throw, also stop waiting */
3055 return SvROK ((SV *)frame->data) && !CORO_THROW;
3056}
3057
3058static void
3059slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3060{
3061 AV *av = (AV *)SvRV (arg [0]);
3062
3063 if (items >= 2)
3064 {
3065 SV *cb_cv = s_get_cv_croak (arg [1]);
3066 av_push (av, SvREFCNT_inc_NN (cb_cv));
3067
3068 if (SvIVX (AvARRAY (av)[0]))
3069 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3070
3071 frame->prepare = prepare_nop;
3072 frame->check = slf_check_nop;
3073 }
3074 else if (SvIVX (AvARRAY (av)[0]))
3075 {
3076 SvIVX (AvARRAY (av)[0]) = 0;
3077 frame->prepare = prepare_nop;
3078 frame->check = slf_check_nop;
3079 }
3080 else
3081 {
3082 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3083
3084 av_push (av, waiter);
3085
3086 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3087 frame->prepare = prepare_schedule;
3088 frame->check = slf_check_signal_wait;
3089 }
2080} 3090}
2081 3091
2082/*****************************************************************************/ 3092/*****************************************************************************/
3093/* Coro::AIO */
2083 3094
2084#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3095#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2085 3096
2086/* create a closure from XS, returns a code reference */ 3097/* helper storage struct */
2087/* the arg can be accessed via GENSUB_ARG from the callback */ 3098struct io_state
2088/* the callback must use dXSARGS/XSRETURN */ 3099{
3100 int errorno;
3101 I32 laststype; /* U16 in 5.10.0 */
3102 int laststatval;
3103 Stat_t statcache;
3104};
3105
3106static void
3107coro_aio_callback (pTHX_ CV *cv)
3108{
3109 dXSARGS;
3110 AV *state = (AV *)S_GENSUB_ARG;
3111 SV *coro = av_pop (state);
3112 SV *data_sv = newSV (sizeof (struct io_state));
3113
3114 av_extend (state, items - 1);
3115
3116 sv_upgrade (data_sv, SVt_PV);
3117 SvCUR_set (data_sv, sizeof (struct io_state));
3118 SvPOK_only (data_sv);
3119
3120 {
3121 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3122
3123 data->errorno = errno;
3124 data->laststype = PL_laststype;
3125 data->laststatval = PL_laststatval;
3126 data->statcache = PL_statcache;
3127 }
3128
3129 /* now build the result vector out of all the parameters and the data_sv */
3130 {
3131 int i;
3132
3133 for (i = 0; i < items; ++i)
3134 av_push (state, SvREFCNT_inc_NN (ST (i)));
3135 }
3136
3137 av_push (state, data_sv);
3138
3139 api_ready (aTHX_ coro);
3140 SvREFCNT_dec (coro);
3141 SvREFCNT_dec ((AV *)state);
3142}
3143
3144static int
3145slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3146{
3147 AV *state = (AV *)frame->data;
3148
3149 /* if we are about to throw, return early */
3150 /* this does not cancel the aio request, but at least */
3151 /* it quickly returns */
3152 if (CORO_THROW)
3153 return 0;
3154
3155 /* one element that is an RV? repeat! */
3156 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3157 return 1;
3158
3159 /* restore status */
3160 {
3161 SV *data_sv = av_pop (state);
3162 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3163
3164 errno = data->errorno;
3165 PL_laststype = data->laststype;
3166 PL_laststatval = data->laststatval;
3167 PL_statcache = data->statcache;
3168
3169 SvREFCNT_dec (data_sv);
3170 }
3171
3172 /* push result values */
3173 {
3174 dSP;
3175 int i;
3176
3177 EXTEND (SP, AvFILLp (state) + 1);
3178 for (i = 0; i <= AvFILLp (state); ++i)
3179 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3180
3181 PUTBACK;
3182 }
3183
3184 return 0;
3185}
3186
3187static void
3188slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3189{
3190 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3191 SV *coro_hv = SvRV (coro_current);
3192 struct coro *coro = SvSTATE_hv (coro_hv);
3193
3194 /* put our coroutine id on the state arg */
3195 av_push (state, SvREFCNT_inc_NN (coro_hv));
3196
3197 /* first see whether we have a non-zero priority and set it as AIO prio */
3198 if (coro->prio)
3199 {
3200 dSP;
3201
3202 static SV *prio_cv;
3203 static SV *prio_sv;
3204
3205 if (ecb_expect_false (!prio_cv))
3206 {
3207 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3208 prio_sv = newSViv (0);
3209 }
3210
3211 PUSHMARK (SP);
3212 sv_setiv (prio_sv, coro->prio);
3213 XPUSHs (prio_sv);
3214
3215 PUTBACK;
3216 call_sv (prio_cv, G_VOID | G_DISCARD);
3217 }
3218
3219 /* now call the original request */
3220 {
3221 dSP;
3222 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3223 int i;
3224
3225 PUSHMARK (SP);
3226
3227 /* first push all args to the stack */
3228 EXTEND (SP, items + 1);
3229
3230 for (i = 0; i < items; ++i)
3231 PUSHs (arg [i]);
3232
3233 /* now push the callback closure */
3234 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3235
3236 /* now call the AIO function - we assume our request is uncancelable */
3237 PUTBACK;
3238 call_sv ((SV *)req, G_VOID | G_DISCARD);
3239 }
3240
3241 /* now that the request is going, we loop till we have a result */
3242 frame->data = (void *)state;
3243 frame->prepare = prepare_schedule;
3244 frame->check = slf_check_aio_req;
3245}
3246
3247static void
3248coro_aio_req_xs (pTHX_ CV *cv)
3249{
3250 dXSARGS;
3251
3252 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3253
3254 XSRETURN_EMPTY;
3255}
3256
3257/*****************************************************************************/
3258
3259#if CORO_CLONE
3260# include "clone.c"
3261#endif
3262
3263/*****************************************************************************/
3264
2089static SV * 3265static SV *
2090gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3266coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2091{ 3267{
2092 CV *cv = (CV *)NEWSV (0, 0); 3268 SV *coro_sv;
3269 struct coro *coro;
3270 MAGIC *mg;
3271 HV *hv;
3272 SV *cb;
3273 int i;
2093 3274
2094 sv_upgrade ((SV *)cv, SVt_PVCV); 3275 if (argc > 0)
3276 {
3277 cb = s_get_cv_croak (argv [0]);
2095 3278
2096 CvANON_on (cv); 3279 if (!is_coro)
2097 CvISXSUB_on (cv); 3280 {
2098 CvXSUB (cv) = xsub; 3281 if (CvISXSUB (cb))
2099 GENSUB_ARG = arg; 3282 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2100 3283
2101 return newRV_noinc ((SV *)cv); 3284 if (!CvROOT (cb))
2102} 3285 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3286 }
3287 }
2103 3288
2104/*****************************************************************************/ 3289 Newz (0, coro, 1, struct coro);
3290 coro->args = newAV ();
3291 coro->flags = CF_NEW;
3292
3293 if (coro_first) coro_first->prev = coro;
3294 coro->next = coro_first;
3295 coro_first = coro;
3296
3297 coro->hv = hv = newHV ();
3298 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3299 mg->mg_flags |= MGf_DUP;
3300 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3301
3302 if (argc > 0)
3303 {
3304 av_extend (coro->args, argc + is_coro - 1);
3305
3306 if (is_coro)
3307 {
3308 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3309 cb = (SV *)cv_coro_run;
3310 }
3311
3312 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3313
3314 for (i = 1; i < argc; i++)
3315 av_push (coro->args, newSVsv (argv [i]));
3316 }
3317
3318 return coro_sv;
3319}
3320
3321#ifndef __cplusplus
3322ecb_cold XS(boot_Coro__State);
3323#endif
3324
3325#if CORO_JIT
3326
3327static void ecb_noinline ecb_cold
3328pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3329{
3330 dSP;
3331 AV *av = newAV ();
3332
3333 av_store (av, 3, newSVuv (d));
3334 av_store (av, 2, newSVuv (c));
3335 av_store (av, 1, newSVuv (b));
3336 av_store (av, 0, newSVuv (a));
3337
3338 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3339
3340 PUTBACK;
3341}
3342
3343static void ecb_noinline ecb_cold
3344jit_init (pTHX)
3345{
3346 dSP;
3347 SV *load, *save;
3348 char *map_base;
3349 char *load_ptr, *save_ptr;
3350 STRLEN load_len, save_len, map_len;
3351 int count;
3352
3353 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3354
3355 PUSHMARK (SP);
3356 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3357 #include "state.h"
3358 count = call_pv ("Coro::State::_jit", G_ARRAY);
3359 SPAGAIN;
3360
3361 save = POPs; save_ptr = SvPVbyte (save, save_len);
3362 load = POPs; load_ptr = SvPVbyte (load, load_len);
3363
3364 map_len = load_len + save_len + 16;
3365
3366 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3367
3368 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3369
3370 load_perl_slots = (load_save_perl_slots_type)map_base;
3371 memcpy (map_base, load_ptr, load_len);
3372
3373 map_base += (load_len + 15) & ~15;
3374
3375 save_perl_slots = (load_save_perl_slots_type)map_base;
3376 memcpy (map_base, save_ptr, save_len);
3377
3378 /* we are good citizens and try to make the page read-only, so the evil evil */
3379 /* hackers might have it a bit more difficult */
3380 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3381
3382 PUTBACK;
3383 eval_pv ("undef &Coro::State::_jit", 1);
3384}
3385
3386#endif
2105 3387
2106MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3388MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2107 3389
2108PROTOTYPES: DISABLE 3390PROTOTYPES: DISABLE
2109 3391
… …
2112#ifdef USE_ITHREADS 3394#ifdef USE_ITHREADS
2113# if CORO_PTHREAD 3395# if CORO_PTHREAD
2114 coro_thx = PERL_GET_CONTEXT; 3396 coro_thx = PERL_GET_CONTEXT;
2115# endif 3397# endif
2116#endif 3398#endif
2117 BOOT_PAGESIZE; 3399 /* perl defines these to check for existance first, but why it doesn't */
3400 /* just create them one at init time is not clear to me, except for */
3401 /* programs trying to delete them, but... */
3402 /* anyway, we declare this as invalid and make sure they are initialised here */
3403 DEFSV;
3404 ERRSV;
3405
3406 cctx_current = cctx_new_empty ();
2118 3407
2119 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3408 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2120 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3409 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2121 3410
2122 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3411 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2142 3431
2143 { 3432 {
2144 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3433 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2145 3434
2146 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3435 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2147 hv_store_ent (PL_custom_op_names, slf, 3436 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2148 newSVpv ("coro_slf", 0), 0);
2149 3437
2150 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3438 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2151 hv_store_ent (PL_custom_op_descs, slf, 3439 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2152 newSVpv ("coro schedule like function", 0), 0);
2153 } 3440 }
2154 3441
2155 coroapi.ver = CORO_API_VERSION; 3442 coroapi.ver = CORO_API_VERSION;
2156 coroapi.rev = CORO_API_REVISION; 3443 coroapi.rev = CORO_API_REVISION;
2157 3444
… …
2162 coroapi.prepare_nop = prepare_nop; 3449 coroapi.prepare_nop = prepare_nop;
2163 coroapi.prepare_schedule = prepare_schedule; 3450 coroapi.prepare_schedule = prepare_schedule;
2164 coroapi.prepare_cede = prepare_cede; 3451 coroapi.prepare_cede = prepare_cede;
2165 coroapi.prepare_cede_notself = prepare_cede_notself; 3452 coroapi.prepare_cede_notself = prepare_cede_notself;
2166 3453
2167 { 3454 time_init (aTHX);
2168 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2169 3455
2170 if (!svp) croak ("Time::HiRes is required");
2171 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2172
2173 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2174 }
2175
2176 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3456 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3457#if CORO_JIT
3458 PUTBACK;
3459 jit_init (aTHX);
3460 SPAGAIN;
3461#endif
2177} 3462}
2178 3463
2179SV * 3464SV *
2180new (char *klass, ...) 3465new (SV *klass, ...)
3466 ALIAS:
3467 Coro::new = 1
2181 CODE: 3468 CODE:
2182{ 3469 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2183 struct coro *coro; 3470 OUTPUT:
2184 MAGIC *mg;
2185 HV *hv;
2186 int i;
2187
2188 Newz (0, coro, 1, struct coro);
2189 coro->args = newAV ();
2190 coro->flags = CF_NEW;
2191
2192 if (coro_first) coro_first->prev = coro;
2193 coro->next = coro_first;
2194 coro_first = coro;
2195
2196 coro->hv = hv = newHV ();
2197 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2198 mg->mg_flags |= MGf_DUP;
2199 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2200
2201 av_extend (coro->args, items - 1);
2202 for (i = 1; i < items; i++)
2203 av_push (coro->args, newSVsv (ST (i)));
2204}
2205 OUTPUT:
2206 RETVAL 3471 RETVAL
2207
2208void
2209_set_stacklevel (...)
2210 CODE:
2211 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2212 3472
2213void 3473void
2214transfer (...) 3474transfer (...)
2215 PROTOTYPE: $$ 3475 PROTOTYPE: $$
2216 CODE: 3476 CODE:
2217 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3477 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2218 3478
2219bool 3479SV *
2220_destroy (SV *coro_sv) 3480clone (Coro::State coro)
2221 CODE: 3481 CODE:
2222 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3482{
3483#if CORO_CLONE
3484 struct coro *ncoro = coro_clone (aTHX_ coro);
3485 MAGIC *mg;
3486 /* TODO: too much duplication */
3487 ncoro->hv = newHV ();
3488 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3489 mg->mg_flags |= MGf_DUP;
3490 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3491#else
3492 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3493#endif
3494}
2223 OUTPUT: 3495 OUTPUT:
2224 RETVAL 3496 RETVAL
2225
2226void
2227_exit (int code)
2228 PROTOTYPE: $
2229 CODE:
2230 _exit (code);
2231 3497
2232int 3498int
2233cctx_stacksize (int new_stacksize = 0) 3499cctx_stacksize (int new_stacksize = 0)
2234 PROTOTYPE: ;$ 3500 PROTOTYPE: ;$
2235 CODE: 3501 CODE:
… …
2271void 3537void
2272list () 3538list ()
2273 PROTOTYPE: 3539 PROTOTYPE:
2274 PPCODE: 3540 PPCODE:
2275{ 3541{
2276 struct coro *coro; 3542 struct coro *coro;
2277 for (coro = coro_first; coro; coro = coro->next) 3543 for (coro = coro_first; coro; coro = coro->next)
2278 if (coro->hv) 3544 if (coro->hv)
2279 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3545 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2280} 3546}
2281 3547
… …
2285 eval = 1 3551 eval = 1
2286 CODE: 3552 CODE:
2287{ 3553{
2288 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3554 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2289 { 3555 {
2290 struct coro temp; 3556 struct coro *current = SvSTATE_current;
3557 struct CoroSLF slf_save;
2291 3558
2292 if (!(coro->flags & CF_RUNNING)) 3559 if (current != coro)
2293 { 3560 {
2294 PUTBACK; 3561 PUTBACK;
2295 save_perl (aTHX_ &temp); 3562 save_perl (aTHX_ current);
2296 load_perl (aTHX_ coro); 3563 load_perl (aTHX_ coro);
3564 /* the coro is most likely in an active SLF call.
3565 * while not strictly required (the code we execute is
3566 * not allowed to call any SLF functions), it's cleaner
3567 * to reinitialise the slf_frame and restore it later.
3568 * This might one day allow us to actually do SLF calls
3569 * from code executed here.
3570 */
3571 slf_save = slf_frame;
3572 slf_frame.prepare = 0;
3573 SPAGAIN;
2297 } 3574 }
2298 3575
2299 {
2300 dSP;
2301 ENTER;
2302 SAVETMPS;
2303 PUTBACK;
2304 PUSHSTACK; 3576 PUSHSTACK;
3577
2305 PUSHMARK (SP); 3578 PUSHMARK (SP);
3579 PUTBACK;
2306 3580
2307 if (ix) 3581 if (ix)
2308 eval_sv (coderef, 0); 3582 eval_sv (coderef, 0);
2309 else 3583 else
2310 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3584 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2311 3585
2312 POPSTACK; 3586 POPSTACK;
2313 SPAGAIN; 3587 SPAGAIN;
2314 FREETMPS;
2315 LEAVE;
2316 PUTBACK;
2317 }
2318 3588
2319 if (!(coro->flags & CF_RUNNING)) 3589 if (current != coro)
2320 { 3590 {
3591 PUTBACK;
3592 slf_frame = slf_save;
2321 save_perl (aTHX_ coro); 3593 save_perl (aTHX_ coro);
2322 load_perl (aTHX_ &temp); 3594 load_perl (aTHX_ current);
2323 SPAGAIN; 3595 SPAGAIN;
2324 } 3596 }
2325 } 3597 }
2326} 3598}
2327 3599
… …
2330 PROTOTYPE: $ 3602 PROTOTYPE: $
2331 ALIAS: 3603 ALIAS:
2332 is_ready = CF_READY 3604 is_ready = CF_READY
2333 is_running = CF_RUNNING 3605 is_running = CF_RUNNING
2334 is_new = CF_NEW 3606 is_new = CF_NEW
2335 is_destroyed = CF_DESTROYED 3607 is_destroyed = CF_ZOMBIE
3608 is_zombie = CF_ZOMBIE
3609 is_suspended = CF_SUSPENDED
2336 CODE: 3610 CODE:
2337 RETVAL = boolSV (coro->flags & ix); 3611 RETVAL = boolSV (coro->flags & ix);
2338 OUTPUT: 3612 OUTPUT:
2339 RETVAL 3613 RETVAL
2340 3614
2341void 3615void
2342throw (Coro::State self, SV *throw = &PL_sv_undef) 3616throw (SV *self, SV *exception = &PL_sv_undef)
2343 PROTOTYPE: $;$ 3617 PROTOTYPE: $;$
2344 CODE: 3618 CODE:
3619{
3620 struct coro *coro = SvSTATE (self);
3621 struct coro *current = SvSTATE_current;
3622 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2345 SvREFCNT_dec (self->throw); 3623 SvREFCNT_dec (*exceptionp);
2346 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3624 SvGETMAGIC (exception);
3625 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3626
3627 api_ready (aTHX_ self);
3628}
2347 3629
2348void 3630void
2349api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3631api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2350 PROTOTYPE: $;$ 3632 PROTOTYPE: $;$
2351 C_ARGS: aTHX_ coro, flags 3633 C_ARGS: aTHX_ coro, flags
2352 3634
2353SV * 3635SV *
2354has_cctx (Coro::State coro) 3636has_cctx (Coro::State coro)
2355 PROTOTYPE: $ 3637 PROTOTYPE: $
2356 CODE: 3638 CODE:
2357 RETVAL = boolSV (!!coro->cctx); 3639 /* maybe manage the running flag differently */
3640 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2358 OUTPUT: 3641 OUTPUT:
2359 RETVAL 3642 RETVAL
2360 3643
2361int 3644int
2362is_traced (Coro::State coro) 3645is_traced (Coro::State coro)
… …
2382 3665
2383void 3666void
2384force_cctx () 3667force_cctx ()
2385 PROTOTYPE: 3668 PROTOTYPE:
2386 CODE: 3669 CODE:
2387 SvSTATE_current->cctx->idle_sp = 0; 3670 cctx_current->idle_sp = 0;
2388 3671
2389void 3672void
2390swap_defsv (Coro::State self) 3673swap_defsv (Coro::State self)
2391 PROTOTYPE: $ 3674 PROTOTYPE: $
2392 ALIAS: 3675 ALIAS:
… …
2400 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3683 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2401 3684
2402 SV *tmp = *src; *src = *dst; *dst = tmp; 3685 SV *tmp = *src; *src = *dst; *dst = tmp;
2403 } 3686 }
2404 3687
3688void
3689cancel (Coro::State self)
3690 CODE:
3691 coro_state_destroy (aTHX_ self);
3692
3693SV *
3694enable_times (int enabled = enable_times)
3695 CODE:
3696{
3697 RETVAL = boolSV (enable_times);
3698
3699 if (enabled != enable_times)
3700 {
3701 enable_times = enabled;
3702
3703 coro_times_update ();
3704 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3705 }
3706}
3707 OUTPUT:
3708 RETVAL
3709
3710void
3711times (Coro::State self)
3712 PPCODE:
3713{
3714 struct coro *current = SvSTATE (coro_current);
3715
3716 if (ecb_expect_false (current == self))
3717 {
3718 coro_times_update ();
3719 coro_times_add (SvSTATE (coro_current));
3720 }
3721
3722 EXTEND (SP, 2);
3723 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3724 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3725
3726 if (ecb_expect_false (current == self))
3727 coro_times_sub (SvSTATE (coro_current));
3728}
3729
3730void
3731swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3732 CODE:
3733{
3734 struct coro *current = SvSTATE_current;
3735
3736 if (current == coro)
3737 SWAP_SVS (current);
3738
3739 if (!coro->swap_sv)
3740 coro->swap_sv = newAV ();
3741
3742 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3743 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3744
3745 if (current == coro)
3746 SWAP_SVS (current);
3747}
3748
3749
2405MODULE = Coro::State PACKAGE = Coro 3750MODULE = Coro::State PACKAGE = Coro
2406 3751
2407BOOT: 3752BOOT:
2408{ 3753{
2409 int i;
2410
2411 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2412 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3754 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2413 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3755 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2414 3756 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2415 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3757 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2416 SvREADONLY_on (coro_current); 3758 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3759 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3760 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3761 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3762
3763 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3764 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3765 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3766 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2417 3767
2418 coro_stash = gv_stashpv ("Coro", TRUE); 3768 coro_stash = gv_stashpv ("Coro", TRUE);
2419 3769
2420 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3770 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2421 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3771 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2422 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3772 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2423 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3773 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2424 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3774 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2425 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3775 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2426
2427 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2428 coro_ready[i] = newAV ();
2429 3776
2430 { 3777 {
2431 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3778 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2432 3779
2433 coroapi.schedule = api_schedule; 3780 coroapi.schedule = api_schedule;
3781 coroapi.schedule_to = api_schedule_to;
2434 coroapi.cede = api_cede; 3782 coroapi.cede = api_cede;
2435 coroapi.cede_notself = api_cede_notself; 3783 coroapi.cede_notself = api_cede_notself;
2436 coroapi.ready = api_ready; 3784 coroapi.ready = api_ready;
2437 coroapi.is_ready = api_is_ready; 3785 coroapi.is_ready = api_is_ready;
2438 coroapi.nready = coro_nready; 3786 coroapi.nready = coro_nready;
2439 coroapi.current = coro_current; 3787 coroapi.current = coro_current;
2440 3788
2441 GCoroAPI = &coroapi; 3789 /*GCoroAPI = &coroapi;*/
2442 sv_setiv (sv, (IV)&coroapi); 3790 sv_setiv (sv, (IV)&coroapi);
2443 SvREADONLY_on (sv); 3791 SvREADONLY_on (sv);
2444 } 3792 }
2445} 3793}
2446 3794
3795SV *
3796async (...)
3797 PROTOTYPE: &@
3798 CODE:
3799 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3800 api_ready (aTHX_ RETVAL);
3801 OUTPUT:
3802 RETVAL
3803
3804void
3805_destroy (Coro::State coro)
3806 CODE:
3807 /* used by the manager thread */
3808 coro_state_destroy (aTHX_ coro);
3809
3810void
3811on_destroy (Coro::State coro, SV *cb)
3812 CODE:
3813 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3814
3815void
3816join (...)
3817 CODE:
3818 CORO_EXECUTE_SLF_XS (slf_init_join);
3819
3820void
3821terminate (...)
3822 CODE:
3823 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3824
3825void
3826cancel (...)
3827 CODE:
3828 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3829
3830int
3831safe_cancel (Coro::State self, ...)
3832 C_ARGS: aTHX_ self, &ST (1), items - 1
3833
2447void 3834void
2448schedule (...) 3835schedule (...)
2449 CODE: 3836 CODE:
2450 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3837 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3838
3839void
3840schedule_to (...)
3841 CODE:
3842 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3843
3844void
3845cede_to (...)
3846 CODE:
3847 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2451 3848
2452void 3849void
2453cede (...) 3850cede (...)
2454 CODE: 3851 CODE:
2455 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3852 CORO_EXECUTE_SLF_XS (slf_init_cede);
2456 3853
2457void 3854void
2458cede_notself (...) 3855cede_notself (...)
2459 CODE: 3856 CODE:
2460 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3857 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2461 3858
2462void 3859void
2463_set_current (SV *current) 3860_set_current (SV *current)
2464 PROTOTYPE: $ 3861 PROTOTYPE: $
2465 CODE: 3862 CODE:
… …
2469void 3866void
2470_set_readyhook (SV *hook) 3867_set_readyhook (SV *hook)
2471 PROTOTYPE: $ 3868 PROTOTYPE: $
2472 CODE: 3869 CODE:
2473 SvREFCNT_dec (coro_readyhook); 3870 SvREFCNT_dec (coro_readyhook);
3871 SvGETMAGIC (hook);
3872 if (SvOK (hook))
3873 {
2474 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3874 coro_readyhook = newSVsv (hook);
3875 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3876 }
3877 else
3878 {
3879 coro_readyhook = 0;
3880 CORO_READYHOOK = 0;
3881 }
2475 3882
2476int 3883int
2477prio (Coro::State coro, int newprio = 0) 3884prio (Coro::State coro, int newprio = 0)
2478 PROTOTYPE: $;$ 3885 PROTOTYPE: $;$
2479 ALIAS: 3886 ALIAS:
… …
2485 if (items > 1) 3892 if (items > 1)
2486 { 3893 {
2487 if (ix) 3894 if (ix)
2488 newprio = coro->prio - newprio; 3895 newprio = coro->prio - newprio;
2489 3896
2490 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3897 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2491 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3898 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2492 3899
2493 coro->prio = newprio; 3900 coro->prio = newprio;
2494 } 3901 }
2495} 3902}
2496 OUTPUT: 3903 OUTPUT:
… …
2510 CODE: 3917 CODE:
2511 RETVAL = coro_nready; 3918 RETVAL = coro_nready;
2512 OUTPUT: 3919 OUTPUT:
2513 RETVAL 3920 RETVAL
2514 3921
2515# for async_pool speedup
2516void 3922void
2517_pool_1 (SV *cb) 3923suspend (Coro::State self)
3924 PROTOTYPE: $
2518 CODE: 3925 CODE:
2519{ 3926 self->flags |= CF_SUSPENDED;
2520 HV *hv = (HV *)SvRV (coro_current);
2521 struct coro *coro = SvSTATE_hv ((SV *)hv);
2522 AV *defav = GvAV (PL_defgv);
2523 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2524 AV *invoke_av;
2525 int i, len;
2526 3927
2527 if (!invoke) 3928void
3929resume (Coro::State self)
3930 PROTOTYPE: $
3931 CODE:
3932 self->flags &= ~CF_SUSPENDED;
3933
3934void
3935_pool_handler (...)
3936 CODE:
3937 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3938
3939void
3940async_pool (SV *cv, ...)
3941 PROTOTYPE: &@
3942 PPCODE:
3943{
3944 HV *hv = (HV *)av_pop (av_async_pool);
3945 AV *av = newAV ();
3946 SV *cb = ST (0);
3947 int i;
3948
3949 av_extend (av, items - 2);
3950 for (i = 1; i < items; ++i)
3951 av_push (av, SvREFCNT_inc_NN (ST (i)));
3952
3953 if ((SV *)hv == &PL_sv_undef)
2528 { 3954 {
2529 SV *old = PL_diehook; 3955 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2530 PL_diehook = 0; 3956 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2531 SvREFCNT_dec (old); 3957 SvREFCNT_dec (sv);
2532 croak ("\3async_pool terminate\2\n");
2533 } 3958 }
2534 3959
2535 SvREFCNT_dec (coro->saved_deffh);
2536 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2537
2538 hv_store (hv, "desc", sizeof ("desc") - 1,
2539 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2540
2541 invoke_av = (AV *)SvRV (invoke);
2542 len = av_len (invoke_av);
2543
2544 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2545
2546 if (len > 0)
2547 { 3960 {
2548 av_fill (defav, len - 1); 3961 struct coro *coro = SvSTATE_hv (hv);
2549 for (i = 0; i < len; ++i) 3962
2550 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3963 assert (!coro->invoke_cb);
3964 assert (!coro->invoke_av);
3965 coro->invoke_cb = SvREFCNT_inc (cb);
3966 coro->invoke_av = av;
2551 } 3967 }
3968
3969 api_ready (aTHX_ (SV *)hv);
3970
3971 if (GIMME_V != G_VOID)
3972 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3973 else
3974 SvREFCNT_dec (hv);
2552} 3975}
3976
3977SV *
3978rouse_cb ()
3979 PROTOTYPE:
3980 CODE:
3981 RETVAL = coro_new_rouse_cb (aTHX);
3982 OUTPUT:
3983 RETVAL
2553 3984
2554void 3985void
2555_pool_2 (SV *cb) 3986rouse_wait (...)
3987 PROTOTYPE: ;$
3988 PPCODE:
3989 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3990
3991void
3992on_enter (SV *block)
3993 ALIAS:
3994 on_leave = 1
3995 PROTOTYPE: &
2556 CODE: 3996 CODE:
2557{ 3997{
2558 struct coro *coro = SvSTATE_current; 3998 struct coro *coro = SvSTATE_current;
3999 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2559 4000
2560 sv_setsv (cb, &PL_sv_undef); 4001 block = s_get_cv_croak (block);
2561 4002
2562 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4003 if (!*avp)
2563 coro->saved_deffh = 0;
2564
2565 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2566 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2567 {
2568 SV *old = PL_diehook;
2569 PL_diehook = 0;
2570 SvREFCNT_dec (old);
2571 croak ("\3async_pool terminate\2\n");
2572 }
2573
2574 av_clear (GvAV (PL_defgv));
2575 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2576 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2577
2578 coro->prio = 0;
2579
2580 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2581 api_trace (aTHX_ coro_current, 0);
2582
2583 av_push (av_async_pool, newSVsv (coro_current));
2584}
2585
2586
2587MODULE = Coro::State PACKAGE = Coro::AIO
2588
2589void
2590_get_state (SV *self)
2591 PROTOTYPE: $
2592 PPCODE:
2593{
2594 AV *defav = GvAV (PL_defgv);
2595 AV *av = newAV (); 4004 *avp = newAV ();
2596 int i;
2597 SV *data_sv = newSV (sizeof (struct io_state));
2598 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2599 SvCUR_set (data_sv, sizeof (struct io_state));
2600 SvPOK_only (data_sv);
2601 4005
2602 data->errorno = errno; 4006 av_push (*avp, SvREFCNT_inc (block));
2603 data->laststype = PL_laststype;
2604 data->laststatval = PL_laststatval;
2605 data->statcache = PL_statcache;
2606 4007
2607 av_extend (av, AvFILLp (defav) + 1 + 1); 4008 if (!ix)
4009 on_enterleave_call (aTHX_ block);
2608 4010
2609 for (i = 0; i <= AvFILLp (defav); ++i) 4011 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2610 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4012 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2611 4013 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2612 av_push (av, data_sv);
2613
2614 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2615
2616 api_ready (aTHX_ self);
2617}
2618
2619void
2620_set_state (SV *state)
2621 PROTOTYPE: $
2622 PPCODE:
2623{
2624 AV *av = (AV *)SvRV (state);
2625 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2626 int i;
2627
2628 errno = data->errorno;
2629 PL_laststype = data->laststype;
2630 PL_laststatval = data->laststatval;
2631 PL_statcache = data->statcache;
2632
2633 EXTEND (SP, AvFILLp (av));
2634 for (i = 0; i < AvFILLp (av); ++i)
2635 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2636}
2637
2638
2639MODULE = Coro::State PACKAGE = Coro::AnyEvent
2640
2641BOOT:
2642 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2643
2644void
2645_schedule (...)
2646 CODE:
2647{
2648 static int incede;
2649
2650 api_cede_notself (aTHX);
2651
2652 ++incede;
2653 while (coro_nready >= incede && api_cede (aTHX))
2654 ;
2655
2656 sv_setsv (sv_activity, &PL_sv_undef);
2657 if (coro_nready >= incede)
2658 {
2659 PUSHMARK (SP);
2660 PUTBACK;
2661 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2662 SPAGAIN;
2663 }
2664
2665 --incede;
2666} 4014}
2667 4015
2668 4016
2669MODULE = Coro::State PACKAGE = PerlIO::cede 4017MODULE = Coro::State PACKAGE = PerlIO::cede
2670 4018
2671BOOT: 4019BOOT:
2672 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4020 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2673 4021
4022
2674MODULE = Coro::State PACKAGE = Coro::Semaphore 4023MODULE = Coro::State PACKAGE = Coro::Semaphore
2675 4024
2676SV * 4025SV *
2677new (SV *klass, SV *count_ = 0) 4026new (SV *klass, SV *count = 0)
2678 CODE: 4027 CODE:
2679{ 4028{
2680 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4029 int semcnt = 1;
2681 AV *av = newAV (); 4030
2682 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4031 if (count)
2683 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4032 {
4033 SvGETMAGIC (count);
4034
4035 if (SvOK (count))
4036 semcnt = SvIV (count);
4037 }
4038
4039 RETVAL = sv_bless (
4040 coro_waitarray_new (aTHX_ semcnt),
4041 GvSTASH (CvGV (cv))
4042 );
2684} 4043}
4044 OUTPUT:
4045 RETVAL
4046
4047# helper for Coro::Channel and others
4048SV *
4049_alloc (int count)
4050 CODE:
4051 RETVAL = coro_waitarray_new (aTHX_ count);
2685 OUTPUT: 4052 OUTPUT:
2686 RETVAL 4053 RETVAL
2687 4054
2688SV * 4055SV *
2689count (SV *self) 4056count (SV *self)
… …
2698 adjust = 1 4065 adjust = 1
2699 CODE: 4066 CODE:
2700 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4067 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2701 4068
2702void 4069void
2703down (SV *self) 4070down (...)
2704 CODE: 4071 CODE:
2705 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 4072 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4073
4074void
4075wait (...)
4076 CODE:
4077 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2706 4078
2707void 4079void
2708try (SV *self) 4080try (SV *self)
2709 PPCODE: 4081 PPCODE:
2710{ 4082{
… …
2722 XSRETURN_NO; 4094 XSRETURN_NO;
2723} 4095}
2724 4096
2725void 4097void
2726waiters (SV *self) 4098waiters (SV *self)
2727 CODE: 4099 PPCODE:
2728{ 4100{
2729 AV *av = (AV *)SvRV (self); 4101 AV *av = (AV *)SvRV (self);
4102 int wcount = AvFILLp (av) + 1 - 1;
2730 4103
2731 if (GIMME_V == G_SCALAR) 4104 if (GIMME_V == G_SCALAR)
2732 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4105 XPUSHs (sv_2mortal (newSViv (wcount)));
2733 else 4106 else
2734 { 4107 {
2735 int i; 4108 int i;
2736 EXTEND (SP, AvFILLp (av) + 1 - 1); 4109 EXTEND (SP, wcount);
2737 for (i = 1; i <= AvFILLp (av); ++i) 4110 for (i = 1; i <= wcount; ++i)
2738 PUSHs (newSVsv (AvARRAY (av)[i])); 4111 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2739 } 4112 }
2740} 4113}
2741 4114
4115MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4116
4117void
4118_may_delete (SV *sem, int count, unsigned int extra_refs)
4119 PPCODE:
4120{
4121 AV *av = (AV *)SvRV (sem);
4122
4123 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4124 && AvFILLp (av) == 0 /* no waiters, just count */
4125 && SvIV (AvARRAY (av)[0]) == count)
4126 XSRETURN_YES;
4127
4128 XSRETURN_NO;
4129}
4130
4131MODULE = Coro::State PACKAGE = Coro::Signal
4132
4133SV *
4134new (SV *klass)
4135 CODE:
4136 RETVAL = sv_bless (
4137 coro_waitarray_new (aTHX_ 0),
4138 GvSTASH (CvGV (cv))
4139 );
4140 OUTPUT:
4141 RETVAL
4142
4143void
4144wait (...)
4145 CODE:
4146 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4147
4148void
4149broadcast (SV *self)
4150 CODE:
4151{
4152 AV *av = (AV *)SvRV (self);
4153 coro_signal_wake (aTHX_ av, AvFILLp (av));
4154}
4155
4156void
4157send (SV *self)
4158 CODE:
4159{
4160 AV *av = (AV *)SvRV (self);
4161
4162 if (AvFILLp (av))
4163 coro_signal_wake (aTHX_ av, 1);
4164 else
4165 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4166}
4167
4168IV
4169awaited (SV *self)
4170 CODE:
4171 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4172 OUTPUT:
4173 RETVAL
4174
4175
4176MODULE = Coro::State PACKAGE = Coro::AnyEvent
4177
4178BOOT:
4179 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4180
4181void
4182_schedule (...)
4183 CODE:
4184{
4185 static int incede;
4186
4187 api_cede_notself (aTHX);
4188
4189 ++incede;
4190 while (coro_nready >= incede && api_cede (aTHX))
4191 ;
4192
4193 sv_setsv (sv_activity, &PL_sv_undef);
4194 if (coro_nready >= incede)
4195 {
4196 PUSHMARK (SP);
4197 PUTBACK;
4198 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4199 }
4200
4201 --incede;
4202}
4203
4204
4205MODULE = Coro::State PACKAGE = Coro::AIO
4206
4207void
4208_register (char *target, char *proto, SV *req)
4209 CODE:
4210{
4211 SV *req_cv = s_get_cv_croak (req);
4212 /* newXSproto doesn't return the CV on 5.8 */
4213 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4214 sv_setpv ((SV *)slf_cv, proto);
4215 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4216}
4217
4218MODULE = Coro::State PACKAGE = Coro::Select
4219
4220void
4221patch_pp_sselect ()
4222 CODE:
4223 if (!coro_old_pp_sselect)
4224 {
4225 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4226 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4227 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4228 }
4229
4230void
4231unpatch_pp_sselect ()
4232 CODE:
4233 if (coro_old_pp_sselect)
4234 {
4235 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4236 coro_old_pp_sselect = 0;
4237 }
4238
4239MODULE = Coro::State PACKAGE = Coro::Util
4240
4241void
4242_exit (int code)
4243 CODE:
4244 _exit (code);
4245
4246NV
4247time ()
4248 CODE:
4249 RETVAL = nvtime (aTHX);
4250 OUTPUT:
4251 RETVAL
4252
4253NV
4254gettimeofday ()
4255 PPCODE:
4256{
4257 UV tv [2];
4258 u2time (aTHX_ tv);
4259 EXTEND (SP, 2);
4260 PUSHs (sv_2mortal (newSVuv (tv [0])));
4261 PUSHs (sv_2mortal (newSVuv (tv [1])));
4262}
4263

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