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Comparing Coro/Coro/State.xs (file contents):
Revision 1.291 by root, Tue Nov 18 05:55:04 2008 UTC vs.
Revision 1.436 by root, Tue Nov 5 14:38:46 2013 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#include "ecb.h"
20
21#include <stddef.h>
13#include <stdio.h> 22#include <stdio.h>
14#include <errno.h> 23#include <errno.h>
15#include <assert.h> 24#include <assert.h>
16 25
17#ifdef WIN32 26#ifndef SVs_PADSTALE
27# define SVs_PADSTALE 0
28#endif
29
30#ifdef PadARRAY
31# define NEWPADAPI 1
32# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
33#else
34typedef AV PADNAMELIST;
35# if !PERL_VERSION_ATLEAST(5,8,0)
36typedef AV PADLIST;
37typedef AV PAD;
38# endif
39# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
40# define PadlistMAX(pl) AvFILLp (pl)
41# define PadlistNAMES(pl) (*PadlistARRAY (pl))
42# define PadARRAY AvARRAY
43# define PadMAX AvFILLp
44# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
45#endif
46
47#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#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD
111#endif
112
113#ifndef CORO_STACKGUARD
114# define CORO_STACKGUARD 0
115#endif 62#endif
116 63
117/* prefer perl internal functions over our own? */ 64/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 65#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 66# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 67#endif
121 68
122/* 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
123 * portable way as possible. */ 70 * portable way as possible. */
124#if __GNUC__ >= 4 71#if __GNUC__ >= 4
72# define dSTACKLEVEL int stacklevel_dummy
125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 73# define STACKLEVEL __builtin_frame_address (0)
126#else 74#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
76# define STACKLEVEL ((void *)&stacklevel)
128#endif 77#endif
129 78
130#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
131
132#if __GNUC__ >= 3
133# define attribute(x) __attribute__(x)
134# define expect(expr,value) __builtin_expect ((expr),(value))
135# define INLINE static inline
136#else
137# define attribute(x)
138# define expect(expr,value) (expr)
139# define INLINE static
140#endif
141
142#define expect_false(expr) expect ((expr) != 0, 0)
143#define expect_true(expr) expect ((expr) != 0, 1)
144
145#define NOINLINE attribute ((noinline))
146 80
147#include "CoroAPI.h" 81#include "CoroAPI.h"
82#define GCoroAPI (&coroapi) /* very sneaky */
148 83
149#ifdef USE_ITHREADS 84#ifdef USE_ITHREADS
150# if CORO_PTHREAD 85# if CORO_PTHREAD
151static void *coro_thx; 86static void *coro_thx;
152# endif 87# endif
153#endif 88#endif
154 89
90#ifdef __linux
91# include <time.h> /* for timespec */
92# include <syscall.h> /* for SYS_* */
93# ifdef SYS_clock_gettime
94# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
95# define CORO_CLOCK_MONOTONIC 1
96# define CORO_CLOCK_THREAD_CPUTIME_ID 3
97# endif
98#endif
99
155static 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]);
156 102
157/* we hijack an hopefully unused CV flag for our purposes */ 103/* we hijack an hopefully unused CV flag for our purposes */
158#define CVf_SLF 0x4000 104#define CVf_SLF 0x4000
159static OP *pp_slf (pTHX); 105static OP *pp_slf (pTHX);
106static void slf_destroy (pTHX_ struct coro *coro);
160 107
161static U32 cctx_gen; 108static U32 cctx_gen;
162static size_t cctx_stacksize = CORO_STACKSIZE; 109static size_t cctx_stacksize = CORO_STACKSIZE;
163static struct CoroAPI coroapi; 110static struct CoroAPI coroapi;
164static AV *main_mainstack; /* used to differentiate between $main and others */ 111static AV *main_mainstack; /* used to differentiate between $main and others */
165static JMPENV *main_top_env; 112static JMPENV *main_top_env;
166static HV *coro_state_stash, *coro_stash; 113static HV *coro_state_stash, *coro_stash;
167static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 114static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
168 115
116static AV *av_destroy; /* destruction queue */
117static SV *sv_manager; /* the manager coro */
118static SV *sv_idle; /* $Coro::idle */
119
169static GV *irsgv; /* $/ */ 120static GV *irsgv; /* $/ */
170static GV *stdoutgv; /* *STDOUT */ 121static GV *stdoutgv; /* *STDOUT */
171static SV *rv_diehook; 122static SV *rv_diehook;
172static SV *rv_warnhook; 123static SV *rv_warnhook;
173static HV *hv_sig; /* %SIG */ 124static HV *hv_sig; /* %SIG */
174 125
175/* async_pool helper stuff */ 126/* async_pool helper stuff */
176static SV *sv_pool_rss; 127static SV *sv_pool_rss;
177static SV *sv_pool_size; 128static SV *sv_pool_size;
129static SV *sv_async_pool_idle; /* description string */
178static AV *av_async_pool; 130static AV *av_async_pool; /* idle pool */
131static SV *sv_Coro; /* class string */
132static CV *cv_pool_handler;
179 133
180/* Coro::AnyEvent */ 134/* Coro::AnyEvent */
181static SV *sv_activity; 135static SV *sv_activity;
182 136
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
183static struct coro_cctx *cctx_first; 143static struct coro_cctx *cctx_first;
184static int cctx_count, cctx_idle; 144static int cctx_count, cctx_idle;
185 145
186enum { 146enum
147{
187 CC_MAPPED = 0x01, 148 CC_MAPPED = 0x01,
188 CC_NOREUSE = 0x02, /* throw this away after tracing */ 149 CC_NOREUSE = 0x02, /* throw this away after tracing */
189 CC_TRACE = 0x04, 150 CC_TRACE = 0x04,
190 CC_TRACE_SUB = 0x08, /* trace sub calls */ 151 CC_TRACE_SUB = 0x08, /* trace sub calls */
191 CC_TRACE_LINE = 0x10, /* trace each statement */ 152 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
196typedef struct coro_cctx 157typedef struct coro_cctx
197{ 158{
198 struct coro_cctx *next; 159 struct coro_cctx *next;
199 160
200 /* the stack */ 161 /* the stack */
201 void *sptr; 162 struct coro_stack stack;
202 size_t ssize;
203 163
204 /* cpu state */ 164 /* cpu state */
205 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
206 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
207 JMPENV *top_env; 169 JMPENV *top_env;
208 coro_context cctx; 170 coro_context cctx;
209 171
210 U32 gen; 172 U32 gen;
211#if CORO_USE_VALGRIND 173#if CORO_USE_VALGRIND
212 int valgrind_id; 174 int valgrind_id;
213#endif 175#endif
214 unsigned char flags; 176 unsigned char flags;
215} coro_cctx; 177} coro_cctx;
216 178
179static coro_cctx *cctx_current; /* the currently running cctx */
180
181/*****************************************************************************/
182
183static MGVTBL coro_state_vtbl;
184
217enum { 185enum
186{
218 CF_RUNNING = 0x0001, /* coroutine is running */ 187 CF_RUNNING = 0x0001, /* coroutine is running */
219 CF_READY = 0x0002, /* coroutine is ready */ 188 CF_READY = 0x0002, /* coroutine is ready */
220 CF_NEW = 0x0004, /* has never been switched to */ 189 CF_NEW = 0x0004, /* has never been switched to */
221 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) */
222}; 193};
223 194
224/* 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 */
225typedef struct 196typedef struct
226{ 197{
227 SV *defsv;
228 AV *defav;
229 SV *errsv;
230 SV *irsgv;
231#define VAR(name,type) type name; 198 #define VARx(name,expr,type) type name;
232# include "state.h" 199 #include "state.h"
233#undef VAR
234} perl_slots; 200} perl_slots;
235 201
202/* how many context stack entries do we need for perl_slots */
236#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 203#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
237 204
238/* this is a structure representing a perl-level coroutine */ 205/* this is a structure representing a perl-level coroutine */
239struct coro { 206struct coro
207{
240 /* the C coroutine allocated to this perl coroutine, if any */ 208 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx; 209 coro_cctx *cctx;
210
211 /* ready queue */
212 struct coro *next_ready;
242 213
243 /* state data */ 214 /* state data */
244 struct CoroSLF slf_frame; /* saved slf frame */ 215 struct CoroSLF slf_frame; /* saved slf frame */
245 AV *mainstack; 216 AV *mainstack;
246 perl_slots *slot; /* basically the saved sp */ 217 perl_slots *slot; /* basically the saved sp */
247 218
219 CV *startcv; /* the CV to execute */
248 AV *args; /* data associated with this coroutine (initial args) */ 220 AV *args; /* data associated with this coroutine (initial args) */
249 int refcnt; /* coroutines are refcounted, yes */
250 int flags; /* CF_ flags */ 221 int flags; /* CF_ flags */
251 HV *hv; /* the perl hash associated with this coro, if any */ 222 HV *hv; /* the perl hash associated with this coro, if any */
252 void (*on_destroy)(pTHX_ struct coro *coro);
253 223
254 /* statistics */ 224 /* statistics */
255 int usecount; /* number of transfers to this coro */ 225 int usecount; /* number of transfers to this coro */
256 226
257 /* coro process data */ 227 /* coro process data */
258 int prio; 228 int prio;
259 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 */
260 233
261 /* async_pool */ 234 /* async_pool */
262 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;
263 248
264 /* linked list */ 249 /* linked list */
265 struct coro *next, *prev; 250 struct coro *next, *prev;
266}; 251};
267 252
268typedef struct coro *Coro__State; 253typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 254typedef struct coro *Coro__State_or_hashref;
270 255
271/* the following variables are effectively part of the perl context */ 256/* the following variables are effectively part of the perl context */
272/* and get copied between struct coro and these variables */ 257/* and get copied between struct coro and these variables */
273/* the mainr easonw e don't support windows process emulation */ 258/* the main reason we don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 259static struct CoroSLF slf_frame; /* the current slf frame */
275static SV *coro_throw;
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 off = PadlistMAX (padlist) + 1;
330 517
331 newpadlist = newAV (); 518#if NEWPADAPI
519
520 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
521 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
522 while (!PadlistARRAY (padlist)[off - 1])
523 --off;
524
525 Perl_pad_push (aTHX_ padlist, off);
526
527 newpad = PadlistARRAY (padlist)[off];
528 PadlistARRAY (padlist)[off] = 0;
529
530#else
531
532#if PERL_VERSION_ATLEAST (5,10,0)
533 Perl_pad_push (aTHX_ padlist, off);
534#else
535 Perl_pad_push (aTHX_ padlist, off, 1);
536#endif
537
538 newpad = PadlistARRAY (padlist)[off];
539 PadlistMAX (padlist) = off - 1;
540
541#endif
542
543 newPADLIST (newpadlist);
544#if !PERL_VERSION_ATLEAST(5,15,3)
545 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
332 AvREAL_off (newpadlist); 546 AvREAL_off (newpadlist);
333#if PERL_VERSION_ATLEAST (5,10,0) 547#endif
334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 548
549 /* Already extended to 2 elements by newPADLIST. */
550 PadlistMAX (newpadlist) = 1;
551 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
552 PadlistARRAY (newpadlist)[1] = newpad;
553
554 return newpadlist;
555}
556
557ecb_inline void
558free_padlist (pTHX_ PADLIST *padlist)
559{
560 /* may be during global destruction */
561 if (!IN_DESTRUCT)
562 {
563 I32 i = PadlistMAX (padlist);
564
565 while (i > 0) /* special-case index 0 */
566 {
567 /* we try to be extra-careful here */
568 PAD *pad = PadlistARRAY (padlist)[i--];
569 I32 j = PadMAX (pad);
570
571 while (j >= 0)
572 SvREFCNT_dec (PadARRAY (pad)[j--]);
573
574 PadMAX (pad) = -1;
575 SvREFCNT_dec (pad);
576 }
577
578 SvREFCNT_dec (PadlistNAMES (padlist));
579
580#if NEWPADAPI
581 Safefree (PadlistARRAY (padlist));
582 Safefree (padlist);
335#else 583#else
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist);
340
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
342 av_store (newpadlist, 1, (SV *)newpad);
343
344 return newpadlist;
345}
346
347static void
348free_padlist (pTHX_ AV *padlist)
349{
350 /* may be during global destruction */
351 if (SvREFCNT (padlist))
352 {
353 I32 i = AvFILLp (padlist); 584 AvFILLp (padlist) = -1;
354 while (i >= 0) 585 AvREAL_off (padlist);
355 {
356 SV **svp = av_fetch (padlist, i--, FALSE);
357 if (svp)
358 {
359 SV *sv;
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))
361 SvREFCNT_dec (sv);
362
363 SvREFCNT_dec (*svp);
364 }
365 }
366
367 SvREFCNT_dec ((SV*)padlist); 586 SvREFCNT_dec ((SV*)padlist);
587#endif
368 } 588 }
369} 589}
370 590
371static int 591static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 592coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 593{
374 AV *padlist; 594 PADLIST *padlist;
375 AV *av = (AV *)mg->mg_obj; 595 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
596 size_t len = *(size_t *)mg->mg_ptr;
376 597
377 /* casting is fun. */ 598 /* perl manages to free our internal AV and _then_ call us */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 599 if (IN_DESTRUCT)
600 return 0;
601
602 while (len--)
379 free_padlist (aTHX_ padlist); 603 free_padlist (aTHX_ padlists[len]);
380
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 604
383 return 0; 605 return 0;
384} 606}
385
386#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 607
389static MGVTBL coro_cv_vtbl = { 608static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 609 0, 0, 0, 0,
391 coro_cv_free 610 coro_cv_free
392}; 611};
393 612
394#define CORO_MAGIC_NN(sv, type) \
395 (expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type))
398
399#define CORO_MAGIC(sv, type) \
400 (expect_true (SvMAGIC (sv)) \
401 ? CORO_MAGIC_NN (sv, type) \
402 : 0)
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* faster than SvSTATE, but expects a coroutine hv */
434#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
435#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
436
437/* the next two functions merely cache the padlists */ 613/* the next two functions merely cache the padlists */
438static void 614ecb_inline void
439get_padlist (pTHX_ CV *cv) 615get_padlist (pTHX_ CV *cv)
440{ 616{
441 MAGIC *mg = CORO_MAGIC_cv (cv); 617 MAGIC *mg = CORO_MAGIC_cv (cv);
442 AV *av; 618 size_t *lenp;
443 619
444 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 620 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
445 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 621 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
446 else 622 else
447 { 623 {
448#if CORO_PREFER_PERL_FUNCTIONS 624#if CORO_PREFER_PERL_FUNCTIONS
449 /* this is probably cleaner? but also slower! */ 625 /* this is probably cleaner? but also slower! */
450 /* in practise, it seems to be less stable */ 626 /* in practise, it seems to be less stable */
451 CV *cp = Perl_cv_clone (cv); 627 CV *cp = Perl_cv_clone (aTHX_ cv);
452 CvPADLIST (cv) = CvPADLIST (cp); 628 CvPADLIST (cv) = CvPADLIST (cp);
453 CvPADLIST (cp) = 0; 629 CvPADLIST (cp) = 0;
454 SvREFCNT_dec (cp); 630 SvREFCNT_dec (cp);
455#else 631#else
456 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 632 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
457#endif 633#endif
458 } 634 }
459} 635}
460 636
461static void 637ecb_inline void
462put_padlist (pTHX_ CV *cv) 638put_padlist (pTHX_ CV *cv)
463{ 639{
464 MAGIC *mg = CORO_MAGIC_cv (cv); 640 MAGIC *mg = CORO_MAGIC_cv (cv);
465 AV *av;
466 641
467 if (expect_false (!mg)) 642 if (ecb_expect_false (!mg))
643 {
468 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 644 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
645 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
646 mg->mg_len = 1; /* so mg_free frees mg_ptr */
647 }
648 else
649 Renew (mg->mg_ptr,
650 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
651 char);
469 652
470 av = (AV *)mg->mg_obj; 653 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
471
472 if (expect_false (AvFILLp (av) >= AvMAX (av)))
473 av_extend (av, AvMAX (av) + 1);
474
475 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
476} 654}
477 655
478/** load & save, init *******************************************************/ 656/** load & save, init *******************************************************/
657
658ecb_inline void
659swap_sv (SV *a, SV *b)
660{
661 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
662 SV tmp;
663
664 /* swap sv_any */
665 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
666
667 /* swap sv_flags */
668 SvFLAGS (&tmp) = SvFLAGS (a);
669 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
670 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
671
672#if PERL_VERSION_ATLEAST (5,10,0)
673 /* perl 5.10 and later complicates this _quite_ a bit, but it also
674 * is much faster, so no quarrels here. alternatively, we could
675 * sv_upgrade to avoid this.
676 */
677 {
678 /* swap sv_u */
679 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
680
681 /* if SvANY points to the head, we need to adjust the pointers,
682 * as the pointer for a still points to b, and maybe vice versa.
683 */
684 #define svany_in_head(type) \
685 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
686
687 if (svany_in_head (SvTYPE (a)))
688 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
689
690 if (svany_in_head (SvTYPE (b)))
691 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
692 }
693#endif
694}
695
696/* swap sv heads, at least logically */
697static void
698swap_svs (pTHX_ Coro__State c)
699{
700 int i;
701
702 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
703 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
704}
705
706#define SWAP_SVS(coro) \
707 if (ecb_expect_false ((coro)->swap_sv)) \
708 swap_svs (aTHX_ (coro))
709
710static void
711on_enterleave_call (pTHX_ SV *cb);
479 712
480static void 713static void
481load_perl (pTHX_ Coro__State c) 714load_perl (pTHX_ Coro__State c)
482{ 715{
483 perl_slots *slot = c->slot; 716 perl_slots *slot = c->slot;
484 c->slot = 0; 717 c->slot = 0;
485 718
486 PL_mainstack = c->mainstack; 719 PL_mainstack = c->mainstack;
487 720
488 GvSV (PL_defgv) = slot->defsv; 721#if CORO_JIT
489 GvAV (PL_defgv) = slot->defav; 722 load_perl_slots (slot);
490 GvSV (PL_errgv) = slot->errsv; 723#else
491 GvSV (irsgv) = slot->irsgv;
492
493 #define VAR(name,type) PL_ ## name = slot->name; 724 #define VARx(name,expr,type) expr = slot->name;
494 # include "state.h" 725 #include "state.h"
495 #undef VAR 726#endif
496 727
497 { 728 {
498 dSP; 729 dSP;
499 730
500 CV *cv; 731 CV *cv;
501 732
502 /* now do the ugly restore mess */ 733 /* now do the ugly restore mess */
503 while (expect_true (cv = (CV *)POPs)) 734 while (ecb_expect_true (cv = (CV *)POPs))
504 { 735 {
505 put_padlist (aTHX_ cv); /* mark this padlist as available */ 736 put_padlist (aTHX_ cv); /* mark this padlist as available */
506 CvDEPTH (cv) = PTR2IV (POPs); 737 CvDEPTH (cv) = PTR2IV (POPs);
507 CvPADLIST (cv) = (AV *)POPs; 738 CvPADLIST (cv) = (PADLIST *)POPs;
508 } 739 }
509 740
510 PUTBACK; 741 PUTBACK;
511 } 742 }
512 743
513 slf_frame = c->slf_frame; 744 slf_frame = c->slf_frame;
514 coro_throw = c->throw; 745 CORO_THROW = c->except;
746
747 if (ecb_expect_false (enable_times))
748 {
749 if (ecb_expect_false (!times_valid))
750 coro_times_update ();
751
752 coro_times_sub (c);
753 }
754
755 if (ecb_expect_false (c->on_enter))
756 {
757 int i;
758
759 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
760 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
761 }
762
763 SWAP_SVS (c);
515} 764}
516 765
517static void 766static void
518save_perl (pTHX_ Coro__State c) 767save_perl (pTHX_ Coro__State c)
519{ 768{
520 c->throw = coro_throw; 769 SWAP_SVS (c);
770
771 if (ecb_expect_false (c->on_leave))
772 {
773 int i;
774
775 for (i = AvFILLp (c->on_leave); i >= 0; --i)
776 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
777 }
778
779 times_valid = 0;
780
781 if (ecb_expect_false (enable_times))
782 {
783 coro_times_update (); times_valid = 1;
784 coro_times_add (c);
785 }
786
787 c->except = CORO_THROW;
521 c->slf_frame = slf_frame; 788 c->slf_frame = slf_frame;
522 789
523 { 790 {
524 dSP; 791 dSP;
525 I32 cxix = cxstack_ix; 792 I32 cxix = cxstack_ix;
… …
533 800
534 XPUSHs (Nullsv); 801 XPUSHs (Nullsv);
535 /* this loop was inspired by pp_caller */ 802 /* this loop was inspired by pp_caller */
536 for (;;) 803 for (;;)
537 { 804 {
538 while (expect_true (cxix >= 0)) 805 while (ecb_expect_true (cxix >= 0))
539 { 806 {
540 PERL_CONTEXT *cx = &ccstk[cxix--]; 807 PERL_CONTEXT *cx = &ccstk[cxix--];
541 808
542 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 809 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
543 { 810 {
544 CV *cv = cx->blk_sub.cv; 811 CV *cv = cx->blk_sub.cv;
545 812
546 if (expect_true (CvDEPTH (cv))) 813 if (ecb_expect_true (CvDEPTH (cv)))
547 { 814 {
548 EXTEND (SP, 3); 815 EXTEND (SP, 3);
549 PUSHs ((SV *)CvPADLIST (cv)); 816 PUSHs ((SV *)CvPADLIST (cv));
550 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 817 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
551 PUSHs ((SV *)cv); 818 PUSHs ((SV *)cv);
… …
554 get_padlist (aTHX_ cv); 821 get_padlist (aTHX_ cv);
555 } 822 }
556 } 823 }
557 } 824 }
558 825
559 if (expect_true (top_si->si_type == PERLSI_MAIN)) 826 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
560 break; 827 break;
561 828
562 top_si = top_si->si_prev; 829 top_si = top_si->si_prev;
563 ccstk = top_si->si_cxstack; 830 ccstk = top_si->si_cxstack;
564 cxix = top_si->si_cxix; 831 cxix = top_si->si_cxix;
… …
566 833
567 PUTBACK; 834 PUTBACK;
568 } 835 }
569 836
570 /* allocate some space on the context stack for our purposes */ 837 /* allocate some space on the context stack for our purposes */
571 /* we manually unroll here, as usually 2 slots is enough */ 838 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
572 if (SLOT_COUNT >= 1) CXINC;
573 if (SLOT_COUNT >= 2) CXINC;
574 if (SLOT_COUNT >= 3) CXINC;
575 { 839 {
576 int i; 840 unsigned int i;
841
577 for (i = 3; i < SLOT_COUNT; ++i) 842 for (i = 0; i < SLOT_COUNT; ++i)
578 CXINC; 843 CXINC;
579 } 844
580 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 845 cxstack_ix -= SLOT_COUNT; /* undo allocation */
846 }
581 847
582 c->mainstack = PL_mainstack; 848 c->mainstack = PL_mainstack;
583 849
584 { 850 {
585 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 851 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
586 852
587 slot->defav = GvAV (PL_defgv); 853#if CORO_JIT
588 slot->defsv = DEFSV; 854 save_perl_slots (slot);
589 slot->errsv = ERRSV; 855#else
590 slot->irsgv = GvSV (irsgv);
591
592 #define VAR(name,type) slot->name = PL_ ## name; 856 #define VARx(name,expr,type) slot->name = expr;
593 # include "state.h" 857 #include "state.h"
594 #undef VAR 858#endif
595 } 859 }
596} 860}
597 861
598/* 862/*
599 * allocate various perl stacks. This is almost an exact copy 863 * allocate various perl stacks. This is almost an exact copy
600 * of perl.c:init_stacks, except that it uses less memory 864 * of perl.c:init_stacks, except that it uses less memory
601 * on the (sometimes correct) assumption that coroutines do 865 * on the (sometimes correct) assumption that coroutines do
602 * not usually need a lot of stackspace. 866 * not usually need a lot of stackspace.
603 */ 867 */
604#if CORO_PREFER_PERL_FUNCTIONS 868#if CORO_PREFER_PERL_FUNCTIONS
605# define coro_init_stacks init_stacks 869# define coro_init_stacks(thx) init_stacks ()
606#else 870#else
607static void 871static void
608coro_init_stacks (pTHX) 872coro_init_stacks (pTHX)
609{ 873{
610 PL_curstackinfo = new_stackinfo(32, 8); 874 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
611 PL_curstackinfo->si_type = PERLSI_MAIN; 875 PL_curstackinfo->si_type = PERLSI_MAIN;
612 PL_curstack = PL_curstackinfo->si_stack; 876 PL_curstack = PL_curstackinfo->si_stack;
613 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 877 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
614 878
615 PL_stack_base = AvARRAY(PL_curstack); 879 PL_stack_base = AvARRAY(PL_curstack);
… …
630#endif 894#endif
631 895
632 New(54,PL_scopestack,8,I32); 896 New(54,PL_scopestack,8,I32);
633 PL_scopestack_ix = 0; 897 PL_scopestack_ix = 0;
634 PL_scopestack_max = 8; 898 PL_scopestack_max = 8;
899#if HAS_SCOPESTACK_NAME
900 New(54,PL_scopestack_name,8,const char*);
901#endif
635 902
636 New(54,PL_savestack,24,ANY); 903 New(54,PL_savestack,24,ANY);
637 PL_savestack_ix = 0; 904 PL_savestack_ix = 0;
638 PL_savestack_max = 24; 905 PL_savestack_max = 24;
639 906
… …
667 } 934 }
668 935
669 Safefree (PL_tmps_stack); 936 Safefree (PL_tmps_stack);
670 Safefree (PL_markstack); 937 Safefree (PL_markstack);
671 Safefree (PL_scopestack); 938 Safefree (PL_scopestack);
939#if HAS_SCOPESTACK_NAME
940 Safefree (PL_scopestack_name);
941#endif
672 Safefree (PL_savestack); 942 Safefree (PL_savestack);
673#if !PERL_VERSION_ATLEAST (5,10,0) 943#if !PERL_VERSION_ATLEAST (5,10,0)
674 Safefree (PL_retstack); 944 Safefree (PL_retstack);
675#endif 945#endif
676} 946}
677 947
948#define CORO_RSS \
949 rss += sizeof (SYM (curstackinfo)); \
950 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
951 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
952 rss += SYM (tmps_max) * sizeof (SV *); \
953 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
954 rss += SYM (scopestack_max) * sizeof (I32); \
955 rss += SYM (savestack_max) * sizeof (ANY);
956
678static size_t 957static size_t
679coro_rss (pTHX_ struct coro *coro) 958coro_rss (pTHX_ struct coro *coro)
680{ 959{
681 size_t rss = sizeof (*coro); 960 size_t rss = sizeof (*coro);
682 961
683 if (coro->mainstack) 962 if (coro->mainstack)
684 { 963 {
685 perl_slots tmp_slot;
686 perl_slots *slot;
687
688 if (coro->flags & CF_RUNNING) 964 if (coro->flags & CF_RUNNING)
689 { 965 {
690 slot = &tmp_slot; 966 #define SYM(sym) PL_ ## sym
691 967 CORO_RSS;
692 #define VAR(name,type) slot->name = PL_ ## name;
693 # include "state.h"
694 #undef VAR 968 #undef SYM
695 } 969 }
696 else 970 else
697 slot = coro->slot;
698
699 if (slot)
700 { 971 {
701 rss += sizeof (slot->curstackinfo); 972 #define SYM(sym) coro->slot->sym
702 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 973 CORO_RSS;
703 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 974 #undef SYM
704 rss += slot->tmps_max * sizeof (SV *);
705 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
706 rss += slot->scopestack_max * sizeof (I32);
707 rss += slot->savestack_max * sizeof (ANY);
708
709#if !PERL_VERSION_ATLEAST (5,10,0)
710 rss += slot->retstack_max * sizeof (OP *);
711#endif
712 } 975 }
713 } 976 }
714 977
715 return rss; 978 return rss;
716} 979}
… …
729#endif 992#endif
730 993
731/* 994/*
732 * This overrides the default magic get method of %SIG elements. 995 * This overrides the default magic get method of %SIG elements.
733 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 996 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
734 * and instead of tryign to save and restore the hash elements, we just provide 997 * and instead of trying to save and restore the hash elements (extremely slow),
735 * readback here. 998 * we just provide our own readback here.
736 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
737 * not expecting this to actually change the hook. This is a potential problem
738 * when a schedule happens then, but we ignore this.
739 */ 999 */
740static int 1000static int ecb_cold
741coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1001coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
742{ 1002{
743 const char *s = MgPV_nolen_const (mg); 1003 const char *s = MgPV_nolen_const (mg);
744 1004
745 if (*s == '_') 1005 if (*s == '_')
746 { 1006 {
747 SV **svp = 0; 1007 SV **svp = 0;
748 1008
749 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1009 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
750 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1010 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
751 1011
752 if (svp) 1012 if (svp)
753 { 1013 {
754 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1014 SV *ssv;
1015
1016 if (!*svp)
1017 ssv = &PL_sv_undef;
1018 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1019 ssv = sv_2mortal (newRV_inc (*svp));
1020 else
1021 ssv = *svp;
1022
1023 sv_setsv (sv, ssv);
755 return 0; 1024 return 0;
756 } 1025 }
757 } 1026 }
758 1027
759 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1028 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
760} 1029}
761 1030
762static int 1031static int ecb_cold
763coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1032coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
764{ 1033{
765 const char *s = MgPV_nolen_const (mg); 1034 const char *s = MgPV_nolen_const (mg);
766 1035
767 if (*s == '_') 1036 if (*s == '_')
… …
781 } 1050 }
782 1051
783 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1052 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
784} 1053}
785 1054
786static int 1055static int ecb_cold
787coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1056coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
788{ 1057{
789 const char *s = MgPV_nolen_const (mg); 1058 const char *s = MgPV_nolen_const (mg);
790 1059
791 if (*s == '_') 1060 if (*s == '_')
… …
796 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1065 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
797 1066
798 if (svp) 1067 if (svp)
799 { 1068 {
800 SV *old = *svp; 1069 SV *old = *svp;
801 *svp = newSVsv (sv); 1070 *svp = SvOK (sv) ? newSVsv (sv) : 0;
802 SvREFCNT_dec (old); 1071 SvREFCNT_dec (old);
803 return 0; 1072 return 0;
804 } 1073 }
805 } 1074 }
806 1075
… …
818slf_check_nop (pTHX_ struct CoroSLF *frame) 1087slf_check_nop (pTHX_ struct CoroSLF *frame)
819{ 1088{
820 return 0; 1089 return 0;
821} 1090}
822 1091
823static UNOP coro_setup_op; 1092static int
1093slf_check_repeat (pTHX_ struct CoroSLF *frame)
1094{
1095 return 1;
1096}
824 1097
825static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1098static UNOP init_perl_op;
1099
1100ecb_noinline static void /* noinline to keep it out of the transfer fast path */
826coro_setup (pTHX_ struct coro *coro) 1101init_perl (pTHX_ struct coro *coro)
827{ 1102{
828 /* 1103 /*
829 * emulate part of the perl startup here. 1104 * emulate part of the perl startup here.
830 */ 1105 */
831 coro_init_stacks (aTHX); 1106 coro_init_stacks (aTHX);
832 1107
833 PL_runops = RUNOPS_DEFAULT; 1108 PL_runops = RUNOPS_DEFAULT;
834 PL_curcop = &PL_compiling; 1109 PL_curcop = &PL_compiling;
835 PL_in_eval = EVAL_NULL; 1110 PL_in_eval = EVAL_NULL;
836 PL_comppad = 0; 1111 PL_comppad = 0;
1112 PL_comppad_name = 0;
1113 PL_comppad_name_fill = 0;
1114 PL_comppad_name_floor = 0;
837 PL_curpm = 0; 1115 PL_curpm = 0;
838 PL_curpad = 0; 1116 PL_curpad = 0;
839 PL_localizing = 0; 1117 PL_localizing = 0;
840 PL_dirty = 0;
841 PL_restartop = 0; 1118 PL_restartop = 0;
842#if PERL_VERSION_ATLEAST (5,10,0) 1119#if PERL_VERSION_ATLEAST (5,10,0)
843 PL_parser = 0; 1120 PL_parser = 0;
844#endif 1121#endif
1122 PL_hints = 0;
845 1123
846 /* recreate the die/warn hooks */ 1124 /* recreate the die/warn hooks */
847 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1125 PL_diehook = SvREFCNT_inc (rv_diehook);
848 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1126 PL_warnhook = SvREFCNT_inc (rv_warnhook);
849 1127
850 GvSV (PL_defgv) = newSV (0); 1128 GvSV (PL_defgv) = newSV (0);
851 GvAV (PL_defgv) = coro->args; coro->args = 0; 1129 GvAV (PL_defgv) = coro->args; coro->args = 0;
852 GvSV (PL_errgv) = newSV (0); 1130 GvSV (PL_errgv) = newSV (0);
853 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1131 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1132 GvHV (PL_hintgv) = 0;
854 PL_rs = newSVsv (GvSV (irsgv)); 1133 PL_rs = newSVsv (GvSV (irsgv));
855 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1134 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
856 1135
857 { 1136 {
858 dSP; 1137 dSP;
859 UNOP myop; 1138 UNOP myop;
860 1139
861 Zero (&myop, 1, UNOP); 1140 Zero (&myop, 1, UNOP);
862 myop.op_next = Nullop; 1141 myop.op_next = Nullop;
1142 myop.op_type = OP_ENTERSUB;
863 myop.op_flags = OPf_WANT_VOID; 1143 myop.op_flags = OPf_WANT_VOID;
864 1144
865 PUSHMARK (SP); 1145 PUSHMARK (SP);
866 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1146 PUSHs ((SV *)coro->startcv);
867 PUTBACK; 1147 PUTBACK;
868 PL_op = (OP *)&myop; 1148 PL_op = (OP *)&myop;
869 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1149 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
870 SPAGAIN;
871 } 1150 }
872 1151
873 /* this newly created coroutine might be run on an existing cctx which most 1152 /* this newly created coroutine might be run on an existing cctx which most
874 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1153 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
875 */ 1154 */
876 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1155 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
877 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1156 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1157 slf_frame.destroy = 0;
878 1158
879 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1159 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
880 coro_setup_op.op_type = OP_CUSTOM; 1160 init_perl_op.op_next = PL_op;
1161 init_perl_op.op_type = OP_ENTERSUB;
881 coro_setup_op.op_ppaddr = pp_slf; 1162 init_perl_op.op_ppaddr = pp_slf;
882 coro_setup_op.op_next = PL_op; 1163 /* no flags etc. required, as an init function won't be called */
883 1164
884 PL_op = (OP *)&coro_setup_op; 1165 PL_op = (OP *)&init_perl_op;
885 1166
886 /* copy throw, in case it was set before coro_setup */ 1167 /* copy throw, in case it was set before init_perl */
887 coro_throw = coro->throw; 1168 CORO_THROW = coro->except;
888}
889 1169
1170 SWAP_SVS (coro);
1171
1172 if (ecb_expect_false (enable_times))
1173 {
1174 coro_times_update ();
1175 coro_times_sub (coro);
1176 }
1177}
1178
890static void 1179static void
891coro_destruct (pTHX_ struct coro *coro) 1180coro_unwind_stacks (pTHX)
892{ 1181{
893 if (!IN_DESTRUCT) 1182 if (!IN_DESTRUCT)
894 { 1183 {
895 /* restore all saved variables and stuff */ 1184 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0); 1185 LEAVE_SCOPE (0);
… …
904 POPSTACK_TO (PL_mainstack); 1193 POPSTACK_TO (PL_mainstack);
905 1194
906 /* unwind main stack */ 1195 /* unwind main stack */
907 dounwind (-1); 1196 dounwind (-1);
908 } 1197 }
1198}
909 1199
910 SvREFCNT_dec (GvSV (PL_defgv)); 1200static void
911 SvREFCNT_dec (GvAV (PL_defgv)); 1201destroy_perl (pTHX_ struct coro *coro)
912 SvREFCNT_dec (GvSV (PL_errgv)); 1202{
913 SvREFCNT_dec (PL_defoutgv); 1203 SV *svf [9];
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916 1204
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919 1205 {
1206 SV *old_current = SvRV (coro_current);
1207 struct coro *current = SvSTATE (old_current);
1208
1209 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1210
1211 save_perl (aTHX_ current);
1212
1213 /* this will cause transfer_check to croak on block*/
1214 SvRV_set (coro_current, (SV *)coro->hv);
1215
1216 load_perl (aTHX_ coro);
1217
1218 coro_unwind_stacks (aTHX);
1219
1220 /* restore swapped sv's */
1221 SWAP_SVS (coro);
1222
1223 coro_destruct_stacks (aTHX);
1224
1225 /* now save some sv's to be free'd later */
1226 svf [0] = GvSV (PL_defgv);
1227 svf [1] = (SV *)GvAV (PL_defgv);
1228 svf [2] = GvSV (PL_errgv);
1229 svf [3] = (SV *)PL_defoutgv;
1230 svf [4] = PL_rs;
1231 svf [5] = GvSV (irsgv);
1232 svf [6] = (SV *)GvHV (PL_hintgv);
1233 svf [7] = PL_diehook;
1234 svf [8] = PL_warnhook;
1235 assert (9 == sizeof (svf) / sizeof (*svf));
1236
1237 SvRV_set (coro_current, old_current);
1238
1239 load_perl (aTHX_ current);
1240 }
1241
1242 {
1243 unsigned int i;
1244
1245 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1246 SvREFCNT_dec (svf [i]);
1247
920 SvREFCNT_dec (coro->saved_deffh); 1248 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro_throw); 1249 SvREFCNT_dec (coro->rouse_cb);
922 1250 SvREFCNT_dec (coro->invoke_cb);
923 coro_destruct_stacks (aTHX); 1251 SvREFCNT_dec (coro->invoke_av);
1252 }
924} 1253}
925 1254
926INLINE void 1255ecb_inline void
927free_coro_mortal (pTHX) 1256free_coro_mortal (pTHX)
928{ 1257{
929 if (expect_true (coro_mortal)) 1258 if (ecb_expect_true (coro_mortal))
930 { 1259 {
931 SvREFCNT_dec (coro_mortal); 1260 SvREFCNT_dec ((SV *)coro_mortal);
932 coro_mortal = 0; 1261 coro_mortal = 0;
933 } 1262 }
934} 1263}
935 1264
936static int 1265static int
937runops_trace (pTHX) 1266runops_trace (pTHX)
938{ 1267{
939 COP *oldcop = 0; 1268 COP *oldcop = 0;
940 int oldcxix = -2; 1269 int oldcxix = -2;
941 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 1270
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1271 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 1272 {
946 PERL_ASYNC_CHECK (); 1273 PERL_ASYNC_CHECK ();
947 1274
948 if (cctx->flags & CC_TRACE_ALL) 1275 if (cctx_current->flags & CC_TRACE_ALL)
949 { 1276 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1277 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
951 { 1278 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1279 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 1280 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 1281 AV *av = newAV (); /* return values */
955 SV **cb; 1282 SV **cb;
… …
992 1319
993 if (PL_curcop != &PL_compiling) 1320 if (PL_curcop != &PL_compiling)
994 { 1321 {
995 SV **cb; 1322 SV **cb;
996 1323
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1324 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998 { 1325 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1326 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1327
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1328 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1329 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1330 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1331 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1332 SV *fullname = sv_2mortal (newSV (0));
1007 1333
1008 if (isGV (gv)) 1334 if (isGV (gv))
… …
1013 SAVETMPS; 1339 SAVETMPS;
1014 EXTEND (SP, 3); 1340 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1341 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1342 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1343 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1344 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK; 1345 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1346 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1347 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN; 1348 SPAGAIN;
1023 FREETMPS; 1349 FREETMPS;
… …
1026 } 1352 }
1027 1353
1028 oldcxix = cxstack_ix; 1354 oldcxix = cxstack_ix;
1029 } 1355 }
1030 1356
1031 if (cctx->flags & CC_TRACE_LINE) 1357 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1358 {
1033 dSP; 1359 dSP;
1034 1360
1035 PL_runops = RUNOPS_DEFAULT; 1361 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1362 ENTER;
… …
1055 1381
1056 TAINT_NOT; 1382 TAINT_NOT;
1057 return 0; 1383 return 0;
1058} 1384}
1059 1385
1060static struct coro_cctx *cctx_ssl_cctx;
1061static struct CoroSLF cctx_ssl_frame; 1386static struct CoroSLF cctx_ssl_frame;
1062 1387
1063static void 1388static void
1064slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1389slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1390{
1066 ta->prev = (struct coro *)cctx_ssl_cctx;
1067 ta->next = 0; 1391 ta->prev = 0;
1068} 1392}
1069 1393
1070static int 1394static int
1071slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1395slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072{ 1396{
1073 *frame = cctx_ssl_frame; 1397 *frame = cctx_ssl_frame;
1074 1398
1075 return 1; 1399 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1076} 1400}
1077 1401
1078/* initialises PL_top_env and injects a pseudo-slf-call to sett he stacklevel */ 1402/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1079static void NOINLINE 1403static void ecb_noinline
1080cctx_prepare (pTHX_ coro_cctx *cctx) 1404cctx_prepare (pTHX)
1081{ 1405{
1082 PL_top_env = &PL_start_env; 1406 PL_top_env = &PL_start_env;
1083 1407
1084 if (cctx->flags & CC_TRACE) 1408 if (cctx_current->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1409 PL_runops = runops_trace;
1086 1410
1087 /* we already must be in an SLF call, there is no other valid way 1411 /* we already must be executing an SLF op, there is no other valid way
1088 * that can lead to creation of a new cctx */ 1412 * that can lead to creation of a new cctx */
1089 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1413 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1090 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1414 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1091 1415
1092 cctx_ssl_cctx = cctx; 1416 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1093 cctx_ssl_frame = slf_frame; 1417 cctx_ssl_frame = slf_frame;
1094 1418
1095 slf_frame.prepare = slf_prepare_set_stacklevel; 1419 slf_frame.prepare = slf_prepare_set_stacklevel;
1096 slf_frame.check = slf_check_set_stacklevel; 1420 slf_frame.check = slf_check_set_stacklevel;
1097} 1421}
1098 1422
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1423/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1424ecb_inline void
1101transfer_tail (pTHX) 1425transfer_tail (pTHX)
1102{ 1426{
1103 free_coro_mortal (aTHX); 1427 free_coro_mortal (aTHX);
1428}
1429
1430/* try to exit the same way perl's main function would do */
1431/* we do not bother resetting the environment or other things *7
1432/* that are not, uhm, essential */
1433/* this obviously also doesn't work when perl is embedded */
1434static void ecb_noinline ecb_cold
1435perlish_exit (pTHX)
1436{
1437 int exitstatus = perl_destruct (PL_curinterp);
1438 perl_free (PL_curinterp);
1439 exit (exitstatus);
1104} 1440}
1105 1441
1106/* 1442/*
1107 * this is a _very_ stripped down perl interpreter ;) 1443 * this is a _very_ stripped down perl interpreter ;)
1108 */ 1444 */
… …
1120 /* normally we would need to skip the entersub here */ 1456 /* normally we would need to skip the entersub here */
1121 /* not doing so will re-execute it, which is exactly what we want */ 1457 /* not doing so will re-execute it, which is exactly what we want */
1122 /* PL_nop = PL_nop->op_next */ 1458 /* PL_nop = PL_nop->op_next */
1123 1459
1124 /* inject a fake subroutine call to cctx_init */ 1460 /* inject a fake subroutine call to cctx_init */
1125 cctx_prepare (aTHX_ (coro_cctx *)arg); 1461 cctx_prepare (aTHX);
1126 1462
1127 /* cctx_run is the alternative tail of transfer() */ 1463 /* cctx_run is the alternative tail of transfer() */
1128 transfer_tail (aTHX); 1464 transfer_tail (aTHX);
1129 1465
1130 /* somebody or something will hit me for both perl_run and PL_restartop */ 1466 /* somebody or something will hit me for both perl_run and PL_restartop */
1131 PL_restartop = PL_op; 1467 PL_restartop = PL_op;
1132 perl_run (PL_curinterp); 1468 perl_run (PL_curinterp);
1469 /*
1470 * Unfortunately, there is no way to get at the return values of the
1471 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1472 * runtime errors here, as this is just a random interpreter, not a thread.
1473 */
1133 1474
1134 /* 1475 /*
1135 * If perl-run returns we assume exit() was being called or the coro 1476 * If perl-run returns we assume exit() was being called or the coro
1136 * fell off the end, which seems to be the only valid (non-bug) 1477 * fell off the end, which seems to be the only valid (non-bug)
1137 * reason for perl_run to return. We try to exit by jumping to the 1478 * reason for perl_run to return. We try to mimic whatever perl is normally
1138 * bootstrap-time "top" top_env, as we cannot restore the "main" 1479 * doing in that case. YMMV.
1139 * coroutine as Coro has no such concept
1140 */ 1480 */
1141 PL_top_env = main_top_env; 1481 perlish_exit (aTHX);
1142 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1143 } 1482 }
1144} 1483}
1145 1484
1146static coro_cctx * 1485static coro_cctx *
1147cctx_new () 1486cctx_new (void)
1148{ 1487{
1149 coro_cctx *cctx; 1488 coro_cctx *cctx;
1150 1489
1151 ++cctx_count; 1490 ++cctx_count;
1152 New (0, cctx, 1, coro_cctx); 1491 New (0, cctx, 1, coro_cctx);
… …
1158 return cctx; 1497 return cctx;
1159} 1498}
1160 1499
1161/* create a new cctx only suitable as source */ 1500/* create a new cctx only suitable as source */
1162static coro_cctx * 1501static coro_cctx *
1163cctx_new_empty () 1502cctx_new_empty (void)
1164{ 1503{
1165 coro_cctx *cctx = cctx_new (); 1504 coro_cctx *cctx = cctx_new ();
1166 1505
1167 cctx->sptr = 0; 1506 cctx->stack.sptr = 0;
1168 coro_create (&cctx->cctx, 0, 0, 0, 0); 1507 coro_create (&cctx->cctx, 0, 0, 0, 0);
1169 1508
1170 return cctx; 1509 return cctx;
1171} 1510}
1172 1511
1173/* create a new cctx suitable as destination/running a perl interpreter */ 1512/* create a new cctx suitable as destination/running a perl interpreter */
1174static coro_cctx * 1513static coro_cctx *
1175cctx_new_run () 1514cctx_new_run (void)
1176{ 1515{
1177 coro_cctx *cctx = cctx_new (); 1516 coro_cctx *cctx = cctx_new ();
1178 void *stack_start;
1179 size_t stack_size;
1180 1517
1181#if HAVE_MMAP 1518 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1182 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1183 /* mmap supposedly does allocate-on-write for us */
1184 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1185
1186 if (cctx->sptr != (void *)-1)
1187 {
1188 #if CORO_STACKGUARD
1189 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1190 #endif
1191 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1192 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1193 cctx->flags |= CC_MAPPED;
1194 } 1519 {
1195 else
1196#endif
1197 {
1198 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1199 New (0, cctx->sptr, cctx_stacksize, long);
1200
1201 if (!cctx->sptr)
1202 {
1203 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1520 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1204 _exit (EXIT_FAILURE); 1521 _exit (EXIT_FAILURE);
1205 }
1206
1207 stack_start = cctx->sptr;
1208 stack_size = cctx->ssize;
1209 } 1522 }
1210 1523
1211 #if CORO_USE_VALGRIND
1212 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1213 #endif
1214
1215 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1524 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1216 1525
1217 return cctx; 1526 return cctx;
1218} 1527}
1219 1528
1220static void 1529static void
1221cctx_destroy (coro_cctx *cctx) 1530cctx_destroy (coro_cctx *cctx)
1222{ 1531{
1223 if (!cctx) 1532 if (!cctx)
1224 return; 1533 return;
1225 1534
1535 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1536
1226 --cctx_count; 1537 --cctx_count;
1227 coro_destroy (&cctx->cctx); 1538 coro_destroy (&cctx->cctx);
1228 1539
1229 /* coro_transfer creates new, empty cctx's */ 1540 coro_stack_free (&cctx->stack);
1230 if (cctx->sptr)
1231 {
1232 #if CORO_USE_VALGRIND
1233 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1234 #endif
1235
1236#if HAVE_MMAP
1237 if (cctx->flags & CC_MAPPED)
1238 munmap (cctx->sptr, cctx->ssize);
1239 else
1240#endif
1241 Safefree (cctx->sptr);
1242 }
1243 1541
1244 Safefree (cctx); 1542 Safefree (cctx);
1245} 1543}
1246 1544
1247/* wether this cctx should be destructed */ 1545/* wether this cctx should be destructed */
1248#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1546#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1249 1547
1250static coro_cctx * 1548static coro_cctx *
1251cctx_get (pTHX) 1549cctx_get (pTHX)
1252{ 1550{
1253 while (expect_true (cctx_first)) 1551 while (ecb_expect_true (cctx_first))
1254 { 1552 {
1255 coro_cctx *cctx = cctx_first; 1553 coro_cctx *cctx = cctx_first;
1256 cctx_first = cctx->next; 1554 cctx_first = cctx->next;
1257 --cctx_idle; 1555 --cctx_idle;
1258 1556
1259 if (expect_true (!CCTX_EXPIRED (cctx))) 1557 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1260 return cctx; 1558 return cctx;
1261 1559
1262 cctx_destroy (cctx); 1560 cctx_destroy (cctx);
1263 } 1561 }
1264 1562
… …
1266} 1564}
1267 1565
1268static void 1566static void
1269cctx_put (coro_cctx *cctx) 1567cctx_put (coro_cctx *cctx)
1270{ 1568{
1271 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1569 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1272 1570
1273 /* free another cctx if overlimit */ 1571 /* free another cctx if overlimit */
1274 if (expect_false (cctx_idle >= cctx_max_idle)) 1572 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1275 { 1573 {
1276 coro_cctx *first = cctx_first; 1574 coro_cctx *first = cctx_first;
1277 cctx_first = first->next; 1575 cctx_first = first->next;
1278 --cctx_idle; 1576 --cctx_idle;
1279 1577
… …
1290static void 1588static void
1291transfer_check (pTHX_ struct coro *prev, struct coro *next) 1589transfer_check (pTHX_ struct coro *prev, struct coro *next)
1292{ 1590{
1293 /* TODO: throwing up here is considered harmful */ 1591 /* TODO: throwing up here is considered harmful */
1294 1592
1295 if (expect_true (prev != next)) 1593 if (ecb_expect_true (prev != next))
1296 { 1594 {
1297 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1595 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1298 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1596 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1299 1597
1300 if (expect_false (next->flags & CF_RUNNING)) 1598 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1301 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1302
1303 if (expect_false (next->flags & CF_DESTROYED))
1304 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1599 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1305 1600
1306#if !PERL_VERSION_ATLEAST (5,10,0) 1601#if !PERL_VERSION_ATLEAST (5,10,0)
1307 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1602 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1308 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1603 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1309#endif 1604#endif
1310 } 1605 }
1311} 1606}
1312 1607
1313/* always use the TRANSFER macro */ 1608/* always use the TRANSFER macro */
1314static void NOINLINE /* noinline so we have a fixed stackframe */ 1609static void ecb_noinline /* noinline so we have a fixed stackframe */
1315transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1610transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1316{ 1611{
1317 dSTACKLEVEL; 1612 dSTACKLEVEL;
1318 1613
1319 /* sometimes transfer is only called to set idle_sp */ 1614 /* sometimes transfer is only called to set idle_sp */
1320 if (expect_false (!next)) 1615 if (ecb_expect_false (!prev))
1321 { 1616 {
1322 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1617 cctx_current->idle_sp = STACKLEVEL;
1323 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1618 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1324 } 1619 }
1325 else if (expect_true (prev != next)) 1620 else if (ecb_expect_true (prev != next))
1326 { 1621 {
1327 coro_cctx *prev__cctx; 1622 coro_cctx *cctx_prev;
1328 1623
1329 if (expect_false (prev->flags & CF_NEW)) 1624 if (ecb_expect_false (prev->flags & CF_NEW))
1330 { 1625 {
1331 /* create a new empty/source context */ 1626 /* create a new empty/source context */
1332 prev->cctx = cctx_new_empty ();
1333 prev->flags &= ~CF_NEW; 1627 prev->flags &= ~CF_NEW;
1334 prev->flags |= CF_RUNNING; 1628 prev->flags |= CF_RUNNING;
1335 } 1629 }
1336 1630
1337 prev->flags &= ~CF_RUNNING; 1631 prev->flags &= ~CF_RUNNING;
1338 next->flags |= CF_RUNNING; 1632 next->flags |= CF_RUNNING;
1339 1633
1340 /* first get rid of the old state */ 1634 /* first get rid of the old state */
1341 save_perl (aTHX_ prev); 1635 save_perl (aTHX_ prev);
1342 1636
1343 if (expect_false (next->flags & CF_NEW)) 1637 if (ecb_expect_false (next->flags & CF_NEW))
1344 { 1638 {
1345 /* need to start coroutine */ 1639 /* need to start coroutine */
1346 next->flags &= ~CF_NEW; 1640 next->flags &= ~CF_NEW;
1347 /* setup coroutine call */ 1641 /* setup coroutine call */
1348 coro_setup (aTHX_ next); 1642 init_perl (aTHX_ next);
1349 } 1643 }
1350 else 1644 else
1351 load_perl (aTHX_ next); 1645 load_perl (aTHX_ next);
1352 1646
1353 prev__cctx = prev->cctx;
1354
1355 /* possibly untie and reuse the cctx */ 1647 /* possibly untie and reuse the cctx */
1356 if (expect_true ( 1648 if (ecb_expect_true (
1357 prev__cctx->idle_sp == (void *)stacklevel 1649 cctx_current->idle_sp == STACKLEVEL
1358 && !(prev__cctx->flags & CC_TRACE) 1650 && !(cctx_current->flags & CC_TRACE)
1359 && !force_cctx 1651 && !force_cctx
1360 )) 1652 ))
1361 { 1653 {
1362 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1654 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1363 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1655 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1364 1656
1365 prev->cctx = 0;
1366
1367 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1657 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1368 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1658 /* without this the next cctx_get might destroy the running cctx while still in use */
1369 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1659 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1370 if (!next->cctx) 1660 if (ecb_expect_true (!next->cctx))
1371 next->cctx = cctx_get (aTHX); 1661 next->cctx = cctx_get (aTHX);
1372 1662
1373 cctx_put (prev__cctx); 1663 cctx_put (cctx_current);
1374 } 1664 }
1665 else
1666 prev->cctx = cctx_current;
1375 1667
1376 ++next->usecount; 1668 ++next->usecount;
1377 1669
1378 if (expect_true (!next->cctx)) 1670 cctx_prev = cctx_current;
1379 next->cctx = cctx_get (aTHX); 1671 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1380 1672
1381 if (expect_false (prev__cctx != next->cctx)) 1673 next->cctx = 0;
1674
1675 if (ecb_expect_false (cctx_prev != cctx_current))
1382 { 1676 {
1383 prev__cctx->top_env = PL_top_env; 1677 cctx_prev->top_env = PL_top_env;
1384 PL_top_env = next->cctx->top_env; 1678 PL_top_env = cctx_current->top_env;
1385 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1679 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1386 } 1680 }
1387 1681
1388 transfer_tail (aTHX); 1682 transfer_tail (aTHX);
1389 } 1683 }
1390} 1684}
… …
1392#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1686#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1393#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1687#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1394 1688
1395/** high level stuff ********************************************************/ 1689/** high level stuff ********************************************************/
1396 1690
1691/* this function is actually Coro, not Coro::State, but we call it from here */
1692/* because it is convenient - but it hasn't been declared yet for that reason */
1397static int 1693static void
1694coro_call_on_destroy (pTHX_ struct coro *coro);
1695
1696static void
1398coro_state_destroy (pTHX_ struct coro *coro) 1697coro_state_destroy (pTHX_ struct coro *coro)
1399{ 1698{
1400 if (coro->flags & CF_DESTROYED) 1699 if (coro->flags & CF_ZOMBIE)
1401 return 0; 1700 return;
1402 1701
1403 if (coro->on_destroy)
1404 coro->on_destroy (aTHX_ coro); 1702 slf_destroy (aTHX_ coro);
1405 1703
1406 coro->flags |= CF_DESTROYED; 1704 coro->flags |= CF_ZOMBIE;
1407 1705
1408 if (coro->flags & CF_READY) 1706 if (coro->flags & CF_READY)
1409 { 1707 {
1410 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1708 /* reduce nready, as destroying a ready coro effectively unreadies it */
1411 /* alternative: look through all ready queues and remove the coro */ 1709 /* alternative: look through all ready queues and remove the coro */
1412 --coro_nready; 1710 --coro_nready;
1413 } 1711 }
1414 else 1712 else
1415 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1713 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1416 1714
1417 if (coro->mainstack && coro->mainstack != main_mainstack)
1418 {
1419 struct coro temp;
1420
1421 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1422
1423 save_perl (aTHX_ &temp);
1424 load_perl (aTHX_ coro);
1425
1426 coro_destruct (aTHX_ coro);
1427
1428 load_perl (aTHX_ &temp);
1429
1430 coro->slot = 0;
1431 }
1432
1433 cctx_destroy (coro->cctx);
1434 SvREFCNT_dec (coro->args);
1435
1436 if (coro->next) coro->next->prev = coro->prev; 1715 if (coro->next) coro->next->prev = coro->prev;
1437 if (coro->prev) coro->prev->next = coro->next; 1716 if (coro->prev) coro->prev->next = coro->next;
1438 if (coro == coro_first) coro_first = coro->next; 1717 if (coro == coro_first) coro_first = coro->next;
1439 1718
1440 return 1; 1719 if (coro->mainstack
1720 && coro->mainstack != main_mainstack
1721 && coro->slot
1722 && !PL_dirty)
1723 destroy_perl (aTHX_ coro);
1724
1725 cctx_destroy (coro->cctx);
1726 SvREFCNT_dec (coro->startcv);
1727 SvREFCNT_dec (coro->args);
1728 SvREFCNT_dec (coro->swap_sv);
1729 SvREFCNT_dec (CORO_THROW);
1730
1731 coro_call_on_destroy (aTHX_ coro);
1732
1733 /* more destruction mayhem in coro_state_free */
1441} 1734}
1442 1735
1443static int 1736static int
1444coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1737coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1445{ 1738{
1446 struct coro *coro = (struct coro *)mg->mg_ptr; 1739 struct coro *coro = (struct coro *)mg->mg_ptr;
1447 mg->mg_ptr = 0; 1740 mg->mg_ptr = 0;
1448 1741
1449 coro->hv = 0;
1450
1451 if (--coro->refcnt < 0)
1452 {
1453 coro_state_destroy (aTHX_ coro); 1742 coro_state_destroy (aTHX_ coro);
1743 SvREFCNT_dec (coro->on_destroy);
1744 SvREFCNT_dec (coro->status);
1745
1454 Safefree (coro); 1746 Safefree (coro);
1455 }
1456 1747
1457 return 0; 1748 return 0;
1458} 1749}
1459 1750
1460static int 1751static int ecb_cold
1461coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1752coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1462{ 1753{
1463 struct coro *coro = (struct coro *)mg->mg_ptr; 1754 /* called when perl clones the current process the slow way (windows process emulation) */
1464 1755 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1465 ++coro->refcnt; 1756 mg->mg_ptr = 0;
1757 mg->mg_virtual = 0;
1466 1758
1467 return 0; 1759 return 0;
1468} 1760}
1469 1761
1470static MGVTBL coro_state_vtbl = { 1762static MGVTBL coro_state_vtbl = {
… …
1495 TRANSFER (ta, 1); 1787 TRANSFER (ta, 1);
1496} 1788}
1497 1789
1498/** Coro ********************************************************************/ 1790/** Coro ********************************************************************/
1499 1791
1500INLINE void 1792ecb_inline void
1501coro_enq (pTHX_ struct coro *coro) 1793coro_enq (pTHX_ struct coro *coro)
1502{ 1794{
1503 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1795 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1504}
1505 1796
1506INLINE SV * 1797 SvREFCNT_inc_NN (coro->hv);
1798
1799 coro->next_ready = 0;
1800 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1801 ready [1] = coro;
1802}
1803
1804ecb_inline struct coro *
1507coro_deq (pTHX) 1805coro_deq (pTHX)
1508{ 1806{
1509 int prio; 1807 int prio;
1510 1808
1511 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1809 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1512 if (AvFILLp (coro_ready [prio]) >= 0) 1810 {
1513 return av_shift (coro_ready [prio]); 1811 struct coro **ready = coro_ready [prio];
1812
1813 if (ready [0])
1814 {
1815 struct coro *coro = ready [0];
1816 ready [0] = coro->next_ready;
1817 return coro;
1818 }
1819 }
1514 1820
1515 return 0; 1821 return 0;
1822}
1823
1824static void
1825invoke_sv_ready_hook_helper (void)
1826{
1827 dTHX;
1828 dSP;
1829
1830 ENTER;
1831 SAVETMPS;
1832
1833 PUSHMARK (SP);
1834 PUTBACK;
1835 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1836
1837 FREETMPS;
1838 LEAVE;
1516} 1839}
1517 1840
1518static int 1841static int
1519api_ready (pTHX_ SV *coro_sv) 1842api_ready (pTHX_ SV *coro_sv)
1520{ 1843{
1521 struct coro *coro;
1522 SV *sv_hook;
1523 void (*xs_hook)(void);
1524
1525 if (SvROK (coro_sv))
1526 coro_sv = SvRV (coro_sv);
1527
1528 coro = SvSTATE (coro_sv); 1844 struct coro *coro = SvSTATE (coro_sv);
1529 1845
1530 if (coro->flags & CF_READY) 1846 if (coro->flags & CF_READY)
1531 return 0; 1847 return 0;
1532 1848
1533 coro->flags |= CF_READY; 1849 coro->flags |= CF_READY;
1534 1850
1535 sv_hook = coro_nready ? 0 : coro_readyhook;
1536 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1537
1538 coro_enq (aTHX_ coro); 1851 coro_enq (aTHX_ coro);
1539 ++coro_nready;
1540 1852
1541 if (sv_hook) 1853 if (!coro_nready++)
1542 { 1854 if (coroapi.readyhook)
1543 dSP; 1855 coroapi.readyhook ();
1544
1545 ENTER;
1546 SAVETMPS;
1547
1548 PUSHMARK (SP);
1549 PUTBACK;
1550 call_sv (sv_hook, G_VOID | G_DISCARD);
1551
1552 FREETMPS;
1553 LEAVE;
1554 }
1555
1556 if (xs_hook)
1557 xs_hook ();
1558 1856
1559 return 1; 1857 return 1;
1560} 1858}
1561 1859
1562static int 1860static int
1563api_is_ready (pTHX_ SV *coro_sv) 1861api_is_ready (pTHX_ SV *coro_sv)
1564{ 1862{
1565 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1863 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1566} 1864}
1567 1865
1568INLINE void 1866/* expects to own a reference to next->hv */
1867ecb_inline void
1569prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1868prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1570{ 1869{
1571 SV *prev_sv, *next_sv;
1572
1573 for (;;)
1574 {
1575 next_sv = coro_deq (aTHX);
1576
1577 /* nothing to schedule: call the idle handler */
1578 if (expect_false (!next_sv))
1579 {
1580 dSP;
1581
1582 ENTER;
1583 SAVETMPS;
1584
1585 PUSHMARK (SP);
1586 PUTBACK;
1587 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1588
1589 FREETMPS;
1590 LEAVE;
1591 continue;
1592 }
1593
1594 ta->next = SvSTATE_hv (next_sv);
1595
1596 /* cannot transfer to destroyed coros, skip and look for next */
1597 if (expect_false (ta->next->flags & CF_DESTROYED))
1598 {
1599 SvREFCNT_dec (next_sv);
1600 /* coro_nready has already been taken care of by destroy */
1601 continue;
1602 }
1603
1604 --coro_nready;
1605 break;
1606 }
1607
1608 /* free this only after the transfer */
1609 prev_sv = SvRV (coro_current); 1870 SV *prev_sv = SvRV (coro_current);
1871
1610 ta->prev = SvSTATE_hv (prev_sv); 1872 ta->prev = SvSTATE_hv (prev_sv);
1873 ta->next = next;
1874
1611 TRANSFER_CHECK (*ta); 1875 TRANSFER_CHECK (*ta);
1612 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1876
1613 ta->next->flags &= ~CF_READY;
1614 SvRV_set (coro_current, next_sv); 1877 SvRV_set (coro_current, (SV *)next->hv);
1615 1878
1616 free_coro_mortal (aTHX); 1879 free_coro_mortal (aTHX);
1617 coro_mortal = prev_sv; 1880 coro_mortal = prev_sv;
1618} 1881}
1619 1882
1620INLINE void 1883static void
1884prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1885{
1886 for (;;)
1887 {
1888 struct coro *next = coro_deq (aTHX);
1889
1890 if (ecb_expect_true (next))
1891 {
1892 /* cannot transfer to destroyed coros, skip and look for next */
1893 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1894 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1895 else
1896 {
1897 next->flags &= ~CF_READY;
1898 --coro_nready;
1899
1900 prepare_schedule_to (aTHX_ ta, next);
1901 break;
1902 }
1903 }
1904 else
1905 {
1906 /* nothing to schedule: call the idle handler */
1907 if (SvROK (sv_idle)
1908 && SvOBJECT (SvRV (sv_idle)))
1909 {
1910 if (SvRV (sv_idle) == SvRV (coro_current))
1911 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1912
1913 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1914 api_ready (aTHX_ SvRV (sv_idle));
1915 --coro_nready;
1916 }
1917 else
1918 {
1919 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1920 dSP;
1921
1922 ENTER;
1923 SAVETMPS;
1924
1925 PUSHMARK (SP);
1926 PUTBACK;
1927 call_sv (sv_idle, G_VOID | G_DISCARD);
1928
1929 FREETMPS;
1930 LEAVE;
1931 }
1932 }
1933 }
1934}
1935
1936ecb_inline void
1621prepare_cede (pTHX_ struct coro_transfer_args *ta) 1937prepare_cede (pTHX_ struct coro_transfer_args *ta)
1622{ 1938{
1623 api_ready (aTHX_ coro_current); 1939 api_ready (aTHX_ coro_current);
1624 prepare_schedule (aTHX_ ta); 1940 prepare_schedule (aTHX_ ta);
1625} 1941}
1626 1942
1627INLINE void 1943ecb_inline void
1628prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1944prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1629{ 1945{
1630 SV *prev = SvRV (coro_current); 1946 SV *prev = SvRV (coro_current);
1631 1947
1632 if (coro_nready) 1948 if (coro_nready)
… …
1645 1961
1646 prepare_schedule (aTHX_ &ta); 1962 prepare_schedule (aTHX_ &ta);
1647 TRANSFER (ta, 1); 1963 TRANSFER (ta, 1);
1648} 1964}
1649 1965
1966static void
1967api_schedule_to (pTHX_ SV *coro_sv)
1968{
1969 struct coro_transfer_args ta;
1970 struct coro *next = SvSTATE (coro_sv);
1971
1972 SvREFCNT_inc_NN (coro_sv);
1973 prepare_schedule_to (aTHX_ &ta, next);
1974}
1975
1650static int 1976static int
1651api_cede (pTHX) 1977api_cede (pTHX)
1652{ 1978{
1653 struct coro_transfer_args ta; 1979 struct coro_transfer_args ta;
1654 1980
1655 prepare_cede (aTHX_ &ta); 1981 prepare_cede (aTHX_ &ta);
1656 1982
1657 if (expect_true (ta.prev != ta.next)) 1983 if (ecb_expect_true (ta.prev != ta.next))
1658 { 1984 {
1659 TRANSFER (ta, 1); 1985 TRANSFER (ta, 1);
1660 return 1; 1986 return 1;
1661 } 1987 }
1662 else 1988 else
… …
1681static void 2007static void
1682api_trace (pTHX_ SV *coro_sv, int flags) 2008api_trace (pTHX_ SV *coro_sv, int flags)
1683{ 2009{
1684 struct coro *coro = SvSTATE (coro_sv); 2010 struct coro *coro = SvSTATE (coro_sv);
1685 2011
2012 if (coro->flags & CF_RUNNING)
2013 croak ("cannot enable tracing on a running coroutine, caught");
2014
1686 if (flags & CC_TRACE) 2015 if (flags & CC_TRACE)
1687 { 2016 {
1688 if (!coro->cctx) 2017 if (!coro->cctx)
1689 coro->cctx = cctx_new_run (); 2018 coro->cctx = cctx_new_run ();
1690 else if (!(coro->cctx->flags & CC_TRACE)) 2019 else if (!(coro->cctx->flags & CC_TRACE))
1691 croak ("cannot enable tracing on coroutine with custom stack,"); 2020 croak ("cannot enable tracing on coroutine with custom stack, caught");
1692 2021
1693 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2022 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1694 } 2023 }
1695 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2024 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1696 { 2025 {
… …
1699 if (coro->flags & CF_RUNNING) 2028 if (coro->flags & CF_RUNNING)
1700 PL_runops = RUNOPS_DEFAULT; 2029 PL_runops = RUNOPS_DEFAULT;
1701 else 2030 else
1702 coro->slot->runops = RUNOPS_DEFAULT; 2031 coro->slot->runops = RUNOPS_DEFAULT;
1703 } 2032 }
2033}
2034
2035static void
2036coro_push_av (pTHX_ AV *av, I32 gimme_v)
2037{
2038 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2039 {
2040 dSP;
2041
2042 if (gimme_v == G_SCALAR)
2043 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2044 else
2045 {
2046 int i;
2047 EXTEND (SP, AvFILLp (av) + 1);
2048
2049 for (i = 0; i <= AvFILLp (av); ++i)
2050 PUSHs (AvARRAY (av)[i]);
2051 }
2052
2053 PUTBACK;
2054 }
2055}
2056
2057static void
2058coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2059{
2060 if (!coro->on_destroy)
2061 coro->on_destroy = newAV ();
2062
2063 av_push (coro->on_destroy, cb);
2064}
2065
2066static void
2067slf_destroy_join (pTHX_ struct CoroSLF *frame)
2068{
2069 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2070}
2071
2072static int
2073slf_check_join (pTHX_ struct CoroSLF *frame)
2074{
2075 struct coro *coro = (struct coro *)frame->data;
2076
2077 if (!coro->status)
2078 return 1;
2079
2080 frame->destroy = 0;
2081
2082 coro_push_av (aTHX_ coro->status, GIMME_V);
2083
2084 SvREFCNT_dec ((SV *)coro->hv);
2085
2086 return 0;
2087}
2088
2089static void
2090slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2091{
2092 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2093
2094 if (items > 1)
2095 croak ("join called with too many arguments");
2096
2097 if (coro->status)
2098 frame->prepare = prepare_nop;
2099 else
2100 {
2101 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2102 frame->prepare = prepare_schedule;
2103 }
2104
2105 frame->check = slf_check_join;
2106 frame->destroy = slf_destroy_join;
2107 frame->data = (void *)coro;
2108 SvREFCNT_inc (coro->hv);
2109}
2110
2111static void
2112coro_call_on_destroy (pTHX_ struct coro *coro)
2113{
2114 AV *od = coro->on_destroy;
2115
2116 if (!od)
2117 return;
2118
2119 coro->on_destroy = 0;
2120 sv_2mortal ((SV *)od);
2121
2122 while (AvFILLp (od) >= 0)
2123 {
2124 SV *cb = sv_2mortal (av_pop (od));
2125
2126 /* coro hv's (and only hv's at the moment) are supported as well */
2127 if (SvSTATEhv_p (aTHX_ cb))
2128 api_ready (aTHX_ cb);
2129 else
2130 {
2131 dSP; /* don't disturb outer sp */
2132 PUSHMARK (SP);
2133
2134 if (coro->status)
2135 {
2136 PUTBACK;
2137 coro_push_av (aTHX_ coro->status, G_ARRAY);
2138 SPAGAIN;
2139 }
2140
2141 PUTBACK;
2142 call_sv (cb, G_VOID | G_DISCARD);
2143 }
2144 }
2145}
2146
2147static void
2148coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2149{
2150 AV *av;
2151
2152 if (coro->status)
2153 {
2154 av = coro->status;
2155 av_clear (av);
2156 }
2157 else
2158 av = coro->status = newAV ();
2159
2160 /* items are actually not so common, so optimise for this case */
2161 if (items)
2162 {
2163 int i;
2164
2165 av_extend (av, items - 1);
2166
2167 for (i = 0; i < items; ++i)
2168 av_push (av, SvREFCNT_inc_NN (arg [i]));
2169 }
2170}
2171
2172static void
2173slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2174{
2175 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2176 api_ready (aTHX_ sv_manager);
2177
2178 frame->prepare = prepare_schedule;
2179 frame->check = slf_check_repeat;
2180
2181 /* as a minor optimisation, we could unwind all stacks here */
2182 /* but that puts extra pressure on pp_slf, and is not worth much */
2183 /*coro_unwind_stacks (aTHX);*/
2184}
2185
2186static void
2187slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2188{
2189 HV *coro_hv = (HV *)SvRV (coro_current);
2190
2191 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2192 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2193}
2194
2195static void
2196slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2197{
2198 HV *coro_hv;
2199 struct coro *coro;
2200
2201 if (items <= 0)
2202 croak ("Coro::cancel called without coro object,");
2203
2204 coro = SvSTATE (arg [0]);
2205 coro_hv = coro->hv;
2206
2207 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2208
2209 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2210 {
2211 /* coro currently busy cancelling something, so just notify it */
2212 coro->slf_frame.data = (void *)coro;
2213
2214 frame->prepare = prepare_nop;
2215 frame->check = slf_check_nop;
2216 }
2217 else if (coro_hv == (HV *)SvRV (coro_current))
2218 {
2219 /* cancelling the current coro is allowed, and equals terminate */
2220 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2221 }
2222 else
2223 {
2224 struct coro *self = SvSTATE_current;
2225
2226 /* otherwise we cancel directly, purely for speed reasons
2227 * unfortunately, this requires some magic trickery, as
2228 * somebody else could cancel us, so we have to fight the cancellation.
2229 * this is ugly, and hopefully fully worth the extra speed.
2230 * besides, I can't get the slow-but-safe version working...
2231 */
2232 slf_frame.data = 0;
2233 self->flags |= CF_NOCANCEL;
2234 coro_state_destroy (aTHX_ coro);
2235 self->flags &= ~CF_NOCANCEL;
2236
2237 if (slf_frame.data)
2238 {
2239 /* while we were busy we have been cancelled, so terminate */
2240 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2241 }
2242 else
2243 {
2244 frame->prepare = prepare_nop;
2245 frame->check = slf_check_nop;
2246 }
2247 }
2248}
2249
2250static int
2251slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2252{
2253 frame->prepare = 0;
2254 coro_unwind_stacks (aTHX);
2255
2256 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2257
2258 return 1;
2259}
2260
2261static int
2262safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2263{
2264 if (coro->cctx)
2265 croak ("coro inside C callback, unable to cancel at this time, caught");
2266
2267 if (coro->flags & CF_NEW)
2268 {
2269 coro_set_status (aTHX_ coro, arg, items);
2270 coro_state_destroy (aTHX_ coro);
2271 }
2272 else
2273 {
2274 if (!coro->slf_frame.prepare)
2275 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2276
2277 slf_destroy (aTHX_ coro);
2278
2279 coro_set_status (aTHX_ coro, arg, items);
2280 coro->slf_frame.prepare = prepare_nop;
2281 coro->slf_frame.check = slf_check_safe_cancel;
2282
2283 api_ready (aTHX_ (SV *)coro->hv);
2284 }
2285
2286 return 1;
2287}
2288
2289/*****************************************************************************/
2290/* async pool handler */
2291
2292static int
2293slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2294{
2295 HV *hv = (HV *)SvRV (coro_current);
2296 struct coro *coro = (struct coro *)frame->data;
2297
2298 if (!coro->invoke_cb)
2299 return 1; /* loop till we have invoke */
2300 else
2301 {
2302 hv_store (hv, "desc", sizeof ("desc") - 1,
2303 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2304
2305 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2306
2307 {
2308 dSP;
2309 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2310 PUTBACK;
2311 }
2312
2313 SvREFCNT_dec (GvAV (PL_defgv));
2314 GvAV (PL_defgv) = coro->invoke_av;
2315 coro->invoke_av = 0;
2316
2317 return 0;
2318 }
2319}
2320
2321static void
2322slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2323{
2324 HV *hv = (HV *)SvRV (coro_current);
2325 struct coro *coro = SvSTATE_hv ((SV *)hv);
2326
2327 if (ecb_expect_true (coro->saved_deffh))
2328 {
2329 /* subsequent iteration */
2330 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2331 coro->saved_deffh = 0;
2332
2333 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2334 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2335 {
2336 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2337 return;
2338 }
2339 else
2340 {
2341 av_clear (GvAV (PL_defgv));
2342 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2343
2344 coro->prio = 0;
2345
2346 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2347 api_trace (aTHX_ coro_current, 0);
2348
2349 frame->prepare = prepare_schedule;
2350 av_push (av_async_pool, SvREFCNT_inc (hv));
2351 }
2352 }
2353 else
2354 {
2355 /* first iteration, simply fall through */
2356 frame->prepare = prepare_nop;
2357 }
2358
2359 frame->check = slf_check_pool_handler;
2360 frame->data = (void *)coro;
2361}
2362
2363/*****************************************************************************/
2364/* rouse callback */
2365
2366#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2367
2368static void
2369coro_rouse_callback (pTHX_ CV *cv)
2370{
2371 dXSARGS;
2372 SV *data = (SV *)S_GENSUB_ARG;
2373
2374 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2375 {
2376 /* first call, set args */
2377 SV *coro = SvRV (data);
2378 AV *av = newAV ();
2379
2380 SvRV_set (data, (SV *)av);
2381
2382 /* better take a full copy of the arguments */
2383 while (items--)
2384 av_store (av, items, newSVsv (ST (items)));
2385
2386 api_ready (aTHX_ coro);
2387 SvREFCNT_dec (coro);
2388 }
2389
2390 XSRETURN_EMPTY;
2391}
2392
2393static int
2394slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2395{
2396 SV *data = (SV *)frame->data;
2397
2398 if (CORO_THROW)
2399 return 0;
2400
2401 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2402 return 1;
2403
2404 /* now push all results on the stack */
2405 {
2406 dSP;
2407 AV *av = (AV *)SvRV (data);
2408 int i;
2409
2410 EXTEND (SP, AvFILLp (av) + 1);
2411 for (i = 0; i <= AvFILLp (av); ++i)
2412 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2413
2414 /* we have stolen the elements, so set length to zero and free */
2415 AvFILLp (av) = -1;
2416 av_undef (av);
2417
2418 PUTBACK;
2419 }
2420
2421 return 0;
2422}
2423
2424static void
2425slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2426{
2427 SV *cb;
2428
2429 if (items)
2430 cb = arg [0];
2431 else
2432 {
2433 struct coro *coro = SvSTATE_current;
2434
2435 if (!coro->rouse_cb)
2436 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2437
2438 cb = sv_2mortal (coro->rouse_cb);
2439 coro->rouse_cb = 0;
2440 }
2441
2442 if (!SvROK (cb)
2443 || SvTYPE (SvRV (cb)) != SVt_PVCV
2444 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2445 croak ("Coro::rouse_wait called with illegal callback argument,");
2446
2447 {
2448 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2449 SV *data = (SV *)S_GENSUB_ARG;
2450
2451 frame->data = (void *)data;
2452 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2453 frame->check = slf_check_rouse_wait;
2454 }
2455}
2456
2457static SV *
2458coro_new_rouse_cb (pTHX)
2459{
2460 HV *hv = (HV *)SvRV (coro_current);
2461 struct coro *coro = SvSTATE_hv (hv);
2462 SV *data = newRV_inc ((SV *)hv);
2463 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2464
2465 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2466 SvREFCNT_dec (data); /* magicext increases the refcount */
2467
2468 SvREFCNT_dec (coro->rouse_cb);
2469 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2470
2471 return cb;
1704} 2472}
1705 2473
1706/*****************************************************************************/ 2474/*****************************************************************************/
1707/* schedule-like-function opcode (SLF) */ 2475/* schedule-like-function opcode (SLF) */
1708 2476
… …
1758 frame->prepare = prepare_schedule; 2526 frame->prepare = prepare_schedule;
1759 frame->check = slf_check_nop; 2527 frame->check = slf_check_nop;
1760} 2528}
1761 2529
1762static void 2530static void
2531slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2532{
2533 struct coro *next = (struct coro *)slf_frame.data;
2534
2535 SvREFCNT_inc_NN (next->hv);
2536 prepare_schedule_to (aTHX_ ta, next);
2537}
2538
2539static void
2540slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2541{
2542 if (!items)
2543 croak ("Coro::schedule_to expects a coroutine argument, caught");
2544
2545 frame->data = (void *)SvSTATE (arg [0]);
2546 frame->prepare = slf_prepare_schedule_to;
2547 frame->check = slf_check_nop;
2548}
2549
2550static void
2551slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2552{
2553 api_ready (aTHX_ SvRV (coro_current));
2554
2555 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2556}
2557
2558static void
1763slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2559slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1764{ 2560{
1765 frame->prepare = prepare_cede; 2561 frame->prepare = prepare_cede;
1766 frame->check = slf_check_nop; 2562 frame->check = slf_check_nop;
1767} 2563}
… …
1769static void 2565static void
1770slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2566slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1771{ 2567{
1772 frame->prepare = prepare_cede_notself; 2568 frame->prepare = prepare_cede_notself;
1773 frame->check = slf_check_nop; 2569 frame->check = slf_check_nop;
2570}
2571
2572/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2573static void
2574slf_destroy (pTHX_ struct coro *coro)
2575{
2576 /* this callback is reserved for slf functions needing to do cleanup */
2577 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2578 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2579
2580 /*
2581 * The on_destroy above most likely is from an SLF call.
2582 * Since by definition the SLF call will not finish when we destroy
2583 * the coro, we will have to force-finish it here, otherwise
2584 * cleanup functions cannot call SLF functions.
2585 */
2586 coro->slf_frame.prepare = 0;
1774} 2587}
1775 2588
1776/* 2589/*
1777 * these not obviously related functions are all rolled into one 2590 * these not obviously related functions are all rolled into one
1778 * function to increase chances that they all will call transfer with the same 2591 * function to increase chances that they all will call transfer with the same
… …
1785 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2598 I32 checkmark; /* mark SP to see how many elements check has pushed */
1786 2599
1787 /* set up the slf frame, unless it has already been set-up */ 2600 /* set up the slf frame, unless it has already been set-up */
1788 /* the latter happens when a new coro has been started */ 2601 /* the latter happens when a new coro has been started */
1789 /* or when a new cctx was attached to an existing coroutine */ 2602 /* or when a new cctx was attached to an existing coroutine */
1790 if (expect_true (!slf_frame.prepare)) 2603 if (ecb_expect_true (!slf_frame.prepare))
1791 { 2604 {
1792 /* first iteration */ 2605 /* first iteration */
1793 dSP; 2606 dSP;
1794 SV **arg = PL_stack_base + TOPMARK + 1; 2607 SV **arg = PL_stack_base + TOPMARK + 1;
1795 int items = SP - arg; /* args without function object */ 2608 int items = SP - arg; /* args without function object */
… …
1835 } 2648 }
1836 while (slf_frame.check (aTHX_ &slf_frame)); 2649 while (slf_frame.check (aTHX_ &slf_frame));
1837 2650
1838 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2651 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1839 2652
2653 /* exception handling */
2654 if (ecb_expect_false (CORO_THROW))
2655 {
2656 SV *exception = sv_2mortal (CORO_THROW);
2657
2658 CORO_THROW = 0;
2659 sv_setsv (ERRSV, exception);
2660 croak (0);
2661 }
2662
1840 /* return value handling - mostly like entersub */ 2663 /* return value handling - mostly like entersub */
1841 /* make sure we put something on the stack in scalar context */ 2664 /* make sure we put something on the stack in scalar context */
1842 if (GIMME_V == G_SCALAR) 2665 if (GIMME_V == G_SCALAR
2666 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
1843 { 2667 {
1844 dSP; 2668 dSP;
1845 SV **bot = PL_stack_base + checkmark; 2669 SV **bot = PL_stack_base + checkmark;
1846 2670
1847 if (sp == bot) /* too few, push undef */ 2671 if (sp == bot) /* too few, push undef */
1848 bot [1] = &PL_sv_undef; 2672 bot [1] = &PL_sv_undef;
1849 else if (sp != bot + 1) /* too many, take last one */ 2673 else /* too many, take last one */
1850 bot [1] = *sp; 2674 bot [1] = *sp;
1851 2675
1852 SP = bot + 1; 2676 SP = bot + 1;
1853 2677
1854 PUTBACK; 2678 PUTBACK;
1855 }
1856
1857 /* exception handling */
1858 if (expect_false (coro_throw))
1859 {
1860 SV *exception = sv_2mortal (coro_throw);
1861
1862 coro_throw = 0;
1863 sv_setsv (ERRSV, exception);
1864 croak (0);
1865 } 2679 }
1866 2680
1867 return NORMAL; 2681 return NORMAL;
1868} 2682}
1869 2683
… …
1897 if (PL_op->op_flags & OPf_STACKED) 2711 if (PL_op->op_flags & OPf_STACKED)
1898 { 2712 {
1899 if (items > slf_arga) 2713 if (items > slf_arga)
1900 { 2714 {
1901 slf_arga = items; 2715 slf_arga = items;
1902 free (slf_argv); 2716 Safefree (slf_argv);
1903 slf_argv = malloc (slf_arga * sizeof (SV *)); 2717 New (0, slf_argv, slf_arga, SV *);
1904 } 2718 }
1905 2719
1906 slf_argc = items; 2720 slf_argc = items;
1907 2721
1908 for (i = 0; i < items; ++i) 2722 for (i = 0; i < items; ++i)
… …
1910 } 2724 }
1911 else 2725 else
1912 slf_argc = 0; 2726 slf_argc = 0;
1913 2727
1914 PL_op->op_ppaddr = pp_slf; 2728 PL_op->op_ppaddr = pp_slf;
1915 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2729 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1916 2730
1917 PL_op = (OP *)&slf_restore; 2731 PL_op = (OP *)&slf_restore;
2732}
2733
2734/*****************************************************************************/
2735/* dynamic wind */
2736
2737static void
2738on_enterleave_call (pTHX_ SV *cb)
2739{
2740 dSP;
2741
2742 PUSHSTACK;
2743
2744 PUSHMARK (SP);
2745 PUTBACK;
2746 call_sv (cb, G_VOID | G_DISCARD);
2747 SPAGAIN;
2748
2749 POPSTACK;
2750}
2751
2752static SV *
2753coro_avp_pop_and_free (pTHX_ AV **avp)
2754{
2755 AV *av = *avp;
2756 SV *res = av_pop (av);
2757
2758 if (AvFILLp (av) < 0)
2759 {
2760 *avp = 0;
2761 SvREFCNT_dec (av);
2762 }
2763
2764 return res;
2765}
2766
2767static void
2768coro_pop_on_enter (pTHX_ void *coro)
2769{
2770 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2771 SvREFCNT_dec (cb);
2772}
2773
2774static void
2775coro_pop_on_leave (pTHX_ void *coro)
2776{
2777 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2778 on_enterleave_call (aTHX_ sv_2mortal (cb));
1918} 2779}
1919 2780
1920/*****************************************************************************/ 2781/*****************************************************************************/
1921/* PerlIO::cede */ 2782/* PerlIO::cede */
1922 2783
… …
1924{ 2785{
1925 PerlIOBuf base; 2786 PerlIOBuf base;
1926 NV next, every; 2787 NV next, every;
1927} PerlIOCede; 2788} PerlIOCede;
1928 2789
1929static IV 2790static IV ecb_cold
1930PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2791PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1931{ 2792{
1932 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2793 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1933 2794
1934 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2795 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1935 self->next = nvtime () + self->every; 2796 self->next = nvtime () + self->every;
1936 2797
1937 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2798 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1938} 2799}
1939 2800
1940static SV * 2801static SV * ecb_cold
1941PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2802PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1942{ 2803{
1943 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2804 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1944 2805
1945 return newSVnv (self->every); 2806 return newSVnv (self->every);
… …
1991 PerlIOBuf_get_cnt, 2852 PerlIOBuf_get_cnt,
1992 PerlIOBuf_set_ptrcnt, 2853 PerlIOBuf_set_ptrcnt,
1993}; 2854};
1994 2855
1995/*****************************************************************************/ 2856/*****************************************************************************/
2857/* Coro::Semaphore & Coro::Signal */
2858
2859static SV *
2860coro_waitarray_new (pTHX_ int count)
2861{
2862 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2863 AV *av = newAV ();
2864 SV **ary;
2865
2866 /* unfortunately, building manually saves memory */
2867 Newx (ary, 2, SV *);
2868 AvALLOC (av) = ary;
2869#if PERL_VERSION_ATLEAST (5,10,0)
2870 AvARRAY (av) = ary;
2871#else
2872 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2873 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2874 SvPVX ((SV *)av) = (char *)ary;
2875#endif
2876 AvMAX (av) = 1;
2877 AvFILLp (av) = 0;
2878 ary [0] = newSViv (count);
2879
2880 return newRV_noinc ((SV *)av);
2881}
2882
1996/* Coro::Semaphore */ 2883/* semaphore */
1997 2884
1998static void 2885static void
1999coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2886coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2000{ 2887{
2001 SV *count_sv = AvARRAY (av)[0]; 2888 SV *count_sv = AvARRAY (av)[0];
… …
2013 AvARRAY (av)[0] = AvARRAY (av)[1]; 2900 AvARRAY (av)[0] = AvARRAY (av)[1];
2014 AvARRAY (av)[1] = count_sv; 2901 AvARRAY (av)[1] = count_sv;
2015 cb = av_shift (av); 2902 cb = av_shift (av);
2016 2903
2017 if (SvOBJECT (cb)) 2904 if (SvOBJECT (cb))
2905 {
2018 api_ready (aTHX_ cb); 2906 api_ready (aTHX_ cb);
2019 else 2907 --count;
2020 croak ("callbacks not yet supported"); 2908 }
2909 else if (SvTYPE (cb) == SVt_PVCV)
2910 {
2911 dSP;
2912 PUSHMARK (SP);
2913 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2914 PUTBACK;
2915 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2916 }
2021 2917
2022 SvREFCNT_dec (cb); 2918 SvREFCNT_dec (cb);
2023
2024 --count;
2025 } 2919 }
2026} 2920}
2027 2921
2028static void 2922static void
2029coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2923coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2030{ 2924{
2031 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2925 /* call $sem->adjust (0) to possibly wake up some other waiters */
2032 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2926 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2033} 2927}
2034 2928
2035static int 2929static int
2036slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2930slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2037{ 2931{
2038 AV *av = (AV *)frame->data; 2932 AV *av = (AV *)frame->data;
2039 SV *count_sv = AvARRAY (av)[0]; 2933 SV *count_sv = AvARRAY (av)[0];
2934 SV *coro_hv = SvRV (coro_current);
2040 2935
2936 /* if we are about to throw, don't actually acquire the lock, just throw */
2937 if (CORO_THROW)
2938 return 0;
2041 if (SvIVX (count_sv) > 0) 2939 else if (SvIVX (count_sv) > 0)
2042 { 2940 {
2043 SvSTATE_current->on_destroy = 0; 2941 frame->destroy = 0;
2942
2943 if (acquire)
2044 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2944 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2945 else
2946 coro_semaphore_adjust (aTHX_ av, 0);
2947
2045 return 0; 2948 return 0;
2046 } 2949 }
2047 else 2950 else
2048 { 2951 {
2049 int i; 2952 int i;
2050 /* if we were woken up but can't down, we look through the whole */ 2953 /* if we were woken up but can't down, we look through the whole */
2051 /* waiters list and only add us if we aren't in there already */ 2954 /* waiters list and only add us if we aren't in there already */
2052 /* this avoids some degenerate memory usage cases */ 2955 /* this avoids some degenerate memory usage cases */
2053 2956 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2054 for (i = 1; i <= AvFILLp (av); ++i)
2055 if (AvARRAY (av)[i] == SvRV (coro_current)) 2957 if (AvARRAY (av)[i] == coro_hv)
2056 return 1; 2958 return 1;
2057 2959
2058 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2960 av_push (av, SvREFCNT_inc (coro_hv));
2059 return 1; 2961 return 1;
2060 } 2962 }
2061} 2963}
2062 2964
2063static void 2965static int
2966slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2967{
2968 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2969}
2970
2971static int
2972slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2973{
2974 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2975}
2976
2977static void
2064slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2978slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2065{ 2979{
2066 AV *av = (AV *)SvRV (arg [0]); 2980 AV *av = (AV *)SvRV (arg [0]);
2067 2981
2068 if (SvIVX (AvARRAY (av)[0]) > 0) 2982 if (SvIVX (AvARRAY (av)[0]) > 0)
2069 { 2983 {
2070 frame->data = (void *)av; 2984 frame->data = (void *)av;
2071 frame->prepare = prepare_nop; 2985 frame->prepare = prepare_nop;
2072 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2073 } 2986 }
2074 else 2987 else
2075 { 2988 {
2076 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2989 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2077 2990
2078 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2991 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2079 frame->prepare = prepare_schedule; 2992 frame->prepare = prepare_schedule;
2080
2081 /* to avoid race conditions when a woken-up coro gets terminated */ 2993 /* to avoid race conditions when a woken-up coro gets terminated */
2082 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2994 /* we arrange for a temporary on_destroy that calls adjust (0) */
2083 assert (!SvSTATE_current->on_destroy);//D
2084 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2995 frame->destroy = coro_semaphore_destroy;
2085 } 2996 }
2997}
2086 2998
2999static void
3000slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3001{
3002 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2087 frame->check = slf_check_semaphore_down; 3003 frame->check = slf_check_semaphore_down;
2088
2089} 3004}
2090 3005
2091/*****************************************************************************/ 3006static void
2092/* gensub: simple closure generation utility */ 3007slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2095
2096/* create a closure from XS, returns a code reference */
2097/* the arg can be accessed via GENSUB_ARG from the callback */
2098/* the callback must use dXSARGS/XSRETURN */
2099static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101{ 3008{
2102 CV *cv = (CV *)newSV (0); 3009 if (items >= 2)
3010 {
3011 /* callback form */
3012 AV *av = (AV *)SvRV (arg [0]);
3013 SV *cb_cv = s_get_cv_croak (arg [1]);
2103 3014
2104 sv_upgrade ((SV *)cv, SVt_PVCV); 3015 av_push (av, SvREFCNT_inc_NN (cb_cv));
2105 3016
2106 CvANON_on (cv); 3017 if (SvIVX (AvARRAY (av)[0]) > 0)
2107 CvISXSUB_on (cv); 3018 coro_semaphore_adjust (aTHX_ av, 0);
2108 CvXSUB (cv) = xsub;
2109 GENSUB_ARG = arg;
2110 3019
2111 return newRV_noinc ((SV *)cv); 3020 frame->prepare = prepare_nop;
3021 frame->check = slf_check_nop;
3022 }
3023 else
3024 {
3025 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3026 frame->check = slf_check_semaphore_wait;
3027 }
3028}
3029
3030/* signal */
3031
3032static void
3033coro_signal_wake (pTHX_ AV *av, int count)
3034{
3035 SvIVX (AvARRAY (av)[0]) = 0;
3036
3037 /* now signal count waiters */
3038 while (count > 0 && AvFILLp (av) > 0)
3039 {
3040 SV *cb;
3041
3042 /* swap first two elements so we can shift a waiter */
3043 cb = AvARRAY (av)[0];
3044 AvARRAY (av)[0] = AvARRAY (av)[1];
3045 AvARRAY (av)[1] = cb;
3046
3047 cb = av_shift (av);
3048
3049 if (SvTYPE (cb) == SVt_PVCV)
3050 {
3051 dSP;
3052 PUSHMARK (SP);
3053 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3054 PUTBACK;
3055 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3056 }
3057 else
3058 {
3059 api_ready (aTHX_ cb);
3060 sv_setiv (cb, 0); /* signal waiter */
3061 }
3062
3063 SvREFCNT_dec (cb);
3064
3065 --count;
3066 }
3067}
3068
3069static int
3070slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3071{
3072 /* if we are about to throw, also stop waiting */
3073 return SvROK ((SV *)frame->data) && !CORO_THROW;
3074}
3075
3076static void
3077slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3078{
3079 AV *av = (AV *)SvRV (arg [0]);
3080
3081 if (items >= 2)
3082 {
3083 SV *cb_cv = s_get_cv_croak (arg [1]);
3084 av_push (av, SvREFCNT_inc_NN (cb_cv));
3085
3086 if (SvIVX (AvARRAY (av)[0]))
3087 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3088
3089 frame->prepare = prepare_nop;
3090 frame->check = slf_check_nop;
3091 }
3092 else if (SvIVX (AvARRAY (av)[0]))
3093 {
3094 SvIVX (AvARRAY (av)[0]) = 0;
3095 frame->prepare = prepare_nop;
3096 frame->check = slf_check_nop;
3097 }
3098 else
3099 {
3100 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3101
3102 av_push (av, waiter);
3103
3104 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3105 frame->prepare = prepare_schedule;
3106 frame->check = slf_check_signal_wait;
3107 }
2112} 3108}
2113 3109
2114/*****************************************************************************/ 3110/*****************************************************************************/
2115/* Coro::AIO */ 3111/* Coro::AIO */
2116 3112
… …
2127 3123
2128static void 3124static void
2129coro_aio_callback (pTHX_ CV *cv) 3125coro_aio_callback (pTHX_ CV *cv)
2130{ 3126{
2131 dXSARGS; 3127 dXSARGS;
2132 AV *state = (AV *)GENSUB_ARG; 3128 AV *state = (AV *)S_GENSUB_ARG;
2133 SV *coro = av_pop (state); 3129 SV *coro = av_pop (state);
2134 SV *data_sv = newSV (sizeof (struct io_state)); 3130 SV *data_sv = newSV (sizeof (struct io_state));
2135 3131
2136 av_extend (state, items); 3132 av_extend (state, items - 1);
2137 3133
2138 sv_upgrade (data_sv, SVt_PV); 3134 sv_upgrade (data_sv, SVt_PV);
2139 SvCUR_set (data_sv, sizeof (struct io_state)); 3135 SvCUR_set (data_sv, sizeof (struct io_state));
2140 SvPOK_only (data_sv); 3136 SvPOK_only (data_sv);
2141 3137
… …
2166static int 3162static int
2167slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3163slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2168{ 3164{
2169 AV *state = (AV *)frame->data; 3165 AV *state = (AV *)frame->data;
2170 3166
3167 /* if we are about to throw, return early */
3168 /* this does not cancel the aio request, but at least */
3169 /* it quickly returns */
3170 if (CORO_THROW)
3171 return 0;
3172
2171 /* one element that is an RV? repeat! */ 3173 /* one element that is an RV? repeat! */
2172 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3174 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2173 return 1; 3175 return 1;
2174 3176
2175 /* restore status */ 3177 /* restore status */
2176 { 3178 {
2177 SV *data_sv = av_pop (state); 3179 SV *data_sv = av_pop (state);
… …
2216 dSP; 3218 dSP;
2217 3219
2218 static SV *prio_cv; 3220 static SV *prio_cv;
2219 static SV *prio_sv; 3221 static SV *prio_sv;
2220 3222
2221 if (expect_false (!prio_cv)) 3223 if (ecb_expect_false (!prio_cv))
2222 { 3224 {
2223 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2224 prio_sv = newSViv (0); 3226 prio_sv = newSViv (0);
2225 } 3227 }
2226 3228
… …
2245 3247
2246 for (i = 0; i < items; ++i) 3248 for (i = 0; i < items; ++i)
2247 PUSHs (arg [i]); 3249 PUSHs (arg [i]);
2248 3250
2249 /* now push the callback closure */ 3251 /* now push the callback closure */
2250 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3252 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2251 3253
2252 /* now call the AIO function - we assume our request is uncancelable */ 3254 /* now call the AIO function - we assume our request is uncancelable */
2253 PUTBACK; 3255 PUTBACK;
2254 call_sv ((SV *)req, G_VOID | G_DISCARD); 3256 call_sv ((SV *)req, G_VOID | G_DISCARD);
2255 } 3257 }
2256 3258
2257 /* now that the requets is going, we loop toll we have a result */ 3259 /* now that the request is going, we loop till we have a result */
2258 frame->data = (void *)state; 3260 frame->data = (void *)state;
2259 frame->prepare = prepare_schedule; 3261 frame->prepare = prepare_schedule;
2260 frame->check = slf_check_aio_req; 3262 frame->check = slf_check_aio_req;
2261} 3263}
2262 3264
… …
2269 3271
2270 XSRETURN_EMPTY; 3272 XSRETURN_EMPTY;
2271} 3273}
2272 3274
2273/*****************************************************************************/ 3275/*****************************************************************************/
3276
3277#if CORO_CLONE
3278# include "clone.c"
3279#endif
3280
3281/*****************************************************************************/
3282
3283static SV *
3284coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3285{
3286 SV *coro_sv;
3287 struct coro *coro;
3288 MAGIC *mg;
3289 HV *hv;
3290 SV *cb;
3291 int i;
3292
3293 if (argc > 0)
3294 {
3295 cb = s_get_cv_croak (argv [0]);
3296
3297 if (!is_coro)
3298 {
3299 if (CvISXSUB (cb))
3300 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3301
3302 if (!CvROOT (cb))
3303 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3304 }
3305 }
3306
3307 Newz (0, coro, 1, struct coro);
3308 coro->args = newAV ();
3309 coro->flags = CF_NEW;
3310
3311 if (coro_first) coro_first->prev = coro;
3312 coro->next = coro_first;
3313 coro_first = coro;
3314
3315 coro->hv = hv = newHV ();
3316 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3317 mg->mg_flags |= MGf_DUP;
3318 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3319
3320 if (argc > 0)
3321 {
3322 av_extend (coro->args, argc + is_coro - 1);
3323
3324 if (is_coro)
3325 {
3326 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3327 cb = (SV *)cv_coro_run;
3328 }
3329
3330 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3331
3332 for (i = 1; i < argc; i++)
3333 av_push (coro->args, newSVsv (argv [i]));
3334 }
3335
3336 return coro_sv;
3337}
3338
3339#ifndef __cplusplus
3340ecb_cold XS(boot_Coro__State);
3341#endif
3342
3343#if CORO_JIT
3344
3345static void ecb_noinline ecb_cold
3346pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3347{
3348 dSP;
3349 AV *av = newAV ();
3350
3351 av_store (av, 3, newSVuv (d));
3352 av_store (av, 2, newSVuv (c));
3353 av_store (av, 1, newSVuv (b));
3354 av_store (av, 0, newSVuv (a));
3355
3356 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3357
3358 PUTBACK;
3359}
3360
3361static void ecb_noinline ecb_cold
3362jit_init (pTHX)
3363{
3364 dSP;
3365 SV *load, *save;
3366 char *map_base;
3367 char *load_ptr, *save_ptr;
3368 STRLEN load_len, save_len, map_len;
3369 int count;
3370
3371 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3372
3373 PUSHMARK (SP);
3374 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3375 #include "state.h"
3376 count = call_pv ("Coro::State::_jit", G_ARRAY);
3377 SPAGAIN;
3378
3379 save = POPs; save_ptr = SvPVbyte (save, save_len);
3380 load = POPs; load_ptr = SvPVbyte (load, load_len);
3381
3382 map_len = load_len + save_len + 16;
3383
3384 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3385
3386 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3387
3388 load_perl_slots = (load_save_perl_slots_type)map_base;
3389 memcpy (map_base, load_ptr, load_len);
3390
3391 map_base += (load_len + 15) & ~15;
3392
3393 save_perl_slots = (load_save_perl_slots_type)map_base;
3394 memcpy (map_base, save_ptr, save_len);
3395
3396 /* we are good citizens and try to make the page read-only, so the evil evil */
3397 /* hackers might have it a bit more difficult */
3398 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3399
3400 PUTBACK;
3401 eval_pv ("undef &Coro::State::_jit", 1);
3402}
3403
3404#endif
2274 3405
2275MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3406MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2276 3407
2277PROTOTYPES: DISABLE 3408PROTOTYPES: DISABLE
2278 3409
… …
2281#ifdef USE_ITHREADS 3412#ifdef USE_ITHREADS
2282# if CORO_PTHREAD 3413# if CORO_PTHREAD
2283 coro_thx = PERL_GET_CONTEXT; 3414 coro_thx = PERL_GET_CONTEXT;
2284# endif 3415# endif
2285#endif 3416#endif
2286 BOOT_PAGESIZE; 3417 /* perl defines these to check for existance first, but why it doesn't */
3418 /* just create them one at init time is not clear to me, except for */
3419 /* programs trying to delete them, but... */
3420 /* anyway, we declare this as invalid and make sure they are initialised here */
3421 DEFSV;
3422 ERRSV;
3423
3424 cctx_current = cctx_new_empty ();
2287 3425
2288 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3426 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2289 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3427 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2290 3428
2291 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3429 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2311 3449
2312 { 3450 {
2313 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3451 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2314 3452
2315 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3453 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2316 hv_store_ent (PL_custom_op_names, slf, 3454 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2317 newSVpv ("coro_slf", 0), 0);
2318 3455
2319 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3456 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2320 hv_store_ent (PL_custom_op_descs, slf, 3457 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2321 newSVpv ("coro schedule like function", 0), 0);
2322 } 3458 }
2323 3459
2324 coroapi.ver = CORO_API_VERSION; 3460 coroapi.ver = CORO_API_VERSION;
2325 coroapi.rev = CORO_API_REVISION; 3461 coroapi.rev = CORO_API_REVISION;
2326 3462
… …
2331 coroapi.prepare_nop = prepare_nop; 3467 coroapi.prepare_nop = prepare_nop;
2332 coroapi.prepare_schedule = prepare_schedule; 3468 coroapi.prepare_schedule = prepare_schedule;
2333 coroapi.prepare_cede = prepare_cede; 3469 coroapi.prepare_cede = prepare_cede;
2334 coroapi.prepare_cede_notself = prepare_cede_notself; 3470 coroapi.prepare_cede_notself = prepare_cede_notself;
2335 3471
2336 { 3472 time_init (aTHX);
2337 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2338 3473
2339 if (!svp) croak ("Time::HiRes is required");
2340 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2341
2342 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2343 }
2344
2345 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3474 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3475#if CORO_JIT
3476 PUTBACK;
3477 jit_init (aTHX);
3478 SPAGAIN;
3479#endif
2346} 3480}
2347 3481
2348SV * 3482SV *
2349new (char *klass, ...) 3483new (SV *klass, ...)
3484 ALIAS:
3485 Coro::new = 1
2350 CODE: 3486 CODE:
2351{ 3487 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2352 struct coro *coro; 3488 OUTPUT:
2353 MAGIC *mg;
2354 HV *hv;
2355 int i;
2356
2357 Newz (0, coro, 1, struct coro);
2358 coro->args = newAV ();
2359 coro->flags = CF_NEW;
2360
2361 if (coro_first) coro_first->prev = coro;
2362 coro->next = coro_first;
2363 coro_first = coro;
2364
2365 coro->hv = hv = newHV ();
2366 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2367 mg->mg_flags |= MGf_DUP;
2368 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2369
2370 av_extend (coro->args, items - 1);
2371 for (i = 1; i < items; i++)
2372 av_push (coro->args, newSVsv (ST (i)));
2373}
2374 OUTPUT:
2375 RETVAL 3489 RETVAL
2376 3490
2377void 3491void
2378transfer (...) 3492transfer (...)
2379 PROTOTYPE: $$ 3493 PROTOTYPE: $$
2380 CODE: 3494 CODE:
2381 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3495 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2382 3496
2383bool 3497SV *
2384_destroy (SV *coro_sv) 3498clone (Coro::State coro)
2385 CODE: 3499 CODE:
2386 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3500{
3501#if CORO_CLONE
3502 struct coro *ncoro = coro_clone (aTHX_ coro);
3503 MAGIC *mg;
3504 /* TODO: too much duplication */
3505 ncoro->hv = newHV ();
3506 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3507 mg->mg_flags |= MGf_DUP;
3508 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3509#else
3510 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3511#endif
3512}
2387 OUTPUT: 3513 OUTPUT:
2388 RETVAL 3514 RETVAL
2389
2390void
2391_exit (int code)
2392 PROTOTYPE: $
2393 CODE:
2394 _exit (code);
2395 3515
2396int 3516int
2397cctx_stacksize (int new_stacksize = 0) 3517cctx_stacksize (int new_stacksize = 0)
2398 PROTOTYPE: ;$ 3518 PROTOTYPE: ;$
2399 CODE: 3519 CODE:
… …
2435void 3555void
2436list () 3556list ()
2437 PROTOTYPE: 3557 PROTOTYPE:
2438 PPCODE: 3558 PPCODE:
2439{ 3559{
2440 struct coro *coro; 3560 struct coro *coro;
2441 for (coro = coro_first; coro; coro = coro->next) 3561 for (coro = coro_first; coro; coro = coro->next)
2442 if (coro->hv) 3562 if (coro->hv)
2443 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3563 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2444} 3564}
2445 3565
… …
2449 eval = 1 3569 eval = 1
2450 CODE: 3570 CODE:
2451{ 3571{
2452 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3572 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2453 { 3573 {
2454 struct coro temp; 3574 struct coro *current = SvSTATE_current;
3575 struct CoroSLF slf_save;
2455 3576
2456 if (!(coro->flags & CF_RUNNING)) 3577 if (current != coro)
2457 { 3578 {
2458 PUTBACK; 3579 PUTBACK;
2459 save_perl (aTHX_ &temp); 3580 save_perl (aTHX_ current);
2460 load_perl (aTHX_ coro); 3581 load_perl (aTHX_ coro);
3582 /* the coro is most likely in an active SLF call.
3583 * while not strictly required (the code we execute is
3584 * not allowed to call any SLF functions), it's cleaner
3585 * to reinitialise the slf_frame and restore it later.
3586 * This might one day allow us to actually do SLF calls
3587 * from code executed here.
3588 */
3589 slf_save = slf_frame;
3590 slf_frame.prepare = 0;
3591 SPAGAIN;
2461 } 3592 }
2462 3593
2463 {
2464 dSP;
2465 ENTER;
2466 SAVETMPS;
2467 PUTBACK;
2468 PUSHSTACK; 3594 PUSHSTACK;
3595
2469 PUSHMARK (SP); 3596 PUSHMARK (SP);
3597 PUTBACK;
2470 3598
2471 if (ix) 3599 if (ix)
2472 eval_sv (coderef, 0); 3600 eval_sv (coderef, 0);
2473 else 3601 else
2474 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3602 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2475 3603
2476 POPSTACK; 3604 POPSTACK;
2477 SPAGAIN; 3605 SPAGAIN;
2478 FREETMPS;
2479 LEAVE;
2480 PUTBACK;
2481 }
2482 3606
2483 if (!(coro->flags & CF_RUNNING)) 3607 if (current != coro)
2484 { 3608 {
3609 PUTBACK;
3610 slf_frame = slf_save;
2485 save_perl (aTHX_ coro); 3611 save_perl (aTHX_ coro);
2486 load_perl (aTHX_ &temp); 3612 load_perl (aTHX_ current);
2487 SPAGAIN; 3613 SPAGAIN;
2488 } 3614 }
2489 } 3615 }
2490} 3616}
2491 3617
… …
2494 PROTOTYPE: $ 3620 PROTOTYPE: $
2495 ALIAS: 3621 ALIAS:
2496 is_ready = CF_READY 3622 is_ready = CF_READY
2497 is_running = CF_RUNNING 3623 is_running = CF_RUNNING
2498 is_new = CF_NEW 3624 is_new = CF_NEW
2499 is_destroyed = CF_DESTROYED 3625 is_destroyed = CF_ZOMBIE
3626 is_zombie = CF_ZOMBIE
3627 is_suspended = CF_SUSPENDED
2500 CODE: 3628 CODE:
2501 RETVAL = boolSV (coro->flags & ix); 3629 RETVAL = boolSV (coro->flags & ix);
2502 OUTPUT: 3630 OUTPUT:
2503 RETVAL 3631 RETVAL
2504 3632
2505void 3633void
2506throw (Coro::State self, SV *throw = &PL_sv_undef) 3634throw (SV *self, SV *exception = &PL_sv_undef)
2507 PROTOTYPE: $;$ 3635 PROTOTYPE: $;$
2508 CODE: 3636 CODE:
2509{ 3637{
3638 struct coro *coro = SvSTATE (self);
2510 struct coro *current = SvSTATE_current; 3639 struct coro *current = SvSTATE_current;
2511 SV **throwp = self == current ? &coro_throw : &self->throw; 3640 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2512 SvREFCNT_dec (*throwp); 3641 SvREFCNT_dec (*exceptionp);
2513 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3642 SvGETMAGIC (exception);
3643 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3644
3645 api_ready (aTHX_ self);
2514} 3646}
2515 3647
2516void 3648void
2517api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3649api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2518 PROTOTYPE: $;$ 3650 PROTOTYPE: $;$
… …
2520 3652
2521SV * 3653SV *
2522has_cctx (Coro::State coro) 3654has_cctx (Coro::State coro)
2523 PROTOTYPE: $ 3655 PROTOTYPE: $
2524 CODE: 3656 CODE:
2525 RETVAL = boolSV (!!coro->cctx); 3657 /* maybe manage the running flag differently */
3658 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2526 OUTPUT: 3659 OUTPUT:
2527 RETVAL 3660 RETVAL
2528 3661
2529int 3662int
2530is_traced (Coro::State coro) 3663is_traced (Coro::State coro)
… …
2550 3683
2551void 3684void
2552force_cctx () 3685force_cctx ()
2553 PROTOTYPE: 3686 PROTOTYPE:
2554 CODE: 3687 CODE:
2555 SvSTATE_current->cctx->idle_sp = 0; 3688 cctx_current->idle_sp = 0;
2556 3689
2557void 3690void
2558swap_defsv (Coro::State self) 3691swap_defsv (Coro::State self)
2559 PROTOTYPE: $ 3692 PROTOTYPE: $
2560 ALIAS: 3693 ALIAS:
… …
2568 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3701 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2569 3702
2570 SV *tmp = *src; *src = *dst; *dst = tmp; 3703 SV *tmp = *src; *src = *dst; *dst = tmp;
2571 } 3704 }
2572 3705
3706void
3707cancel (Coro::State self)
3708 CODE:
3709 coro_state_destroy (aTHX_ self);
3710
3711SV *
3712enable_times (int enabled = enable_times)
3713 CODE:
3714{
3715 RETVAL = boolSV (enable_times);
3716
3717 if (enabled != enable_times)
3718 {
3719 enable_times = enabled;
3720
3721 coro_times_update ();
3722 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3723 }
3724}
3725 OUTPUT:
3726 RETVAL
3727
3728void
3729times (Coro::State self)
3730 PPCODE:
3731{
3732 struct coro *current = SvSTATE (coro_current);
3733
3734 if (ecb_expect_false (current == self))
3735 {
3736 coro_times_update ();
3737 coro_times_add (SvSTATE (coro_current));
3738 }
3739
3740 EXTEND (SP, 2);
3741 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3742 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3743
3744 if (ecb_expect_false (current == self))
3745 coro_times_sub (SvSTATE (coro_current));
3746}
3747
3748void
3749swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3750 CODE:
3751{
3752 struct coro *current = SvSTATE_current;
3753
3754 if (current == coro)
3755 SWAP_SVS (current);
3756
3757 if (!coro->swap_sv)
3758 coro->swap_sv = newAV ();
3759
3760 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3761 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3762
3763 if (current == coro)
3764 SWAP_SVS (current);
3765}
3766
2573 3767
2574MODULE = Coro::State PACKAGE = Coro 3768MODULE = Coro::State PACKAGE = Coro
2575 3769
2576BOOT: 3770BOOT:
2577{ 3771{
2578 int i;
2579
2580 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2581 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3772 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2582 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3773 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2583 3774 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2584 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3775 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2585 SvREADONLY_on (coro_current); 3776 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3777 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3778 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3779 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3780
3781 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3782 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3783 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3784 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2586 3785
2587 coro_stash = gv_stashpv ("Coro", TRUE); 3786 coro_stash = gv_stashpv ("Coro", TRUE);
2588 3787
2589 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3788 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2590 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3789 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2591 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3790 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2592 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3791 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2593 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3792 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2594 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3793 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2595
2596 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2597 coro_ready[i] = newAV ();
2598 3794
2599 { 3795 {
2600 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3796 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2601 3797
2602 coroapi.schedule = api_schedule; 3798 coroapi.schedule = api_schedule;
3799 coroapi.schedule_to = api_schedule_to;
2603 coroapi.cede = api_cede; 3800 coroapi.cede = api_cede;
2604 coroapi.cede_notself = api_cede_notself; 3801 coroapi.cede_notself = api_cede_notself;
2605 coroapi.ready = api_ready; 3802 coroapi.ready = api_ready;
2606 coroapi.is_ready = api_is_ready; 3803 coroapi.is_ready = api_is_ready;
2607 coroapi.nready = coro_nready; 3804 coroapi.nready = coro_nready;
2608 coroapi.current = coro_current; 3805 coroapi.current = coro_current;
2609 3806
2610 GCoroAPI = &coroapi; 3807 /*GCoroAPI = &coroapi;*/
2611 sv_setiv (sv, (IV)&coroapi); 3808 sv_setiv (sv, (IV)&coroapi);
2612 SvREADONLY_on (sv); 3809 SvREADONLY_on (sv);
2613 } 3810 }
2614} 3811}
3812
3813SV *
3814async (...)
3815 PROTOTYPE: &@
3816 CODE:
3817 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3818 api_ready (aTHX_ RETVAL);
3819 OUTPUT:
3820 RETVAL
3821
3822void
3823_destroy (Coro::State coro)
3824 CODE:
3825 /* used by the manager thread */
3826 coro_state_destroy (aTHX_ coro);
3827
3828void
3829on_destroy (Coro::State coro, SV *cb)
3830 CODE:
3831 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3832
3833void
3834join (...)
3835 CODE:
3836 CORO_EXECUTE_SLF_XS (slf_init_join);
3837
3838void
3839terminate (...)
3840 CODE:
3841 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3842
3843void
3844cancel (...)
3845 CODE:
3846 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3847
3848int
3849safe_cancel (Coro::State self, ...)
3850 C_ARGS: aTHX_ self, &ST (1), items - 1
2615 3851
2616void 3852void
2617schedule (...) 3853schedule (...)
2618 CODE: 3854 CODE:
2619 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3855 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3856
3857void
3858schedule_to (...)
3859 CODE:
3860 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3861
3862void
3863cede_to (...)
3864 CODE:
3865 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2620 3866
2621void 3867void
2622cede (...) 3868cede (...)
2623 CODE: 3869 CODE:
2624 CORO_EXECUTE_SLF_XS (slf_init_cede); 3870 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2638void 3884void
2639_set_readyhook (SV *hook) 3885_set_readyhook (SV *hook)
2640 PROTOTYPE: $ 3886 PROTOTYPE: $
2641 CODE: 3887 CODE:
2642 SvREFCNT_dec (coro_readyhook); 3888 SvREFCNT_dec (coro_readyhook);
3889 SvGETMAGIC (hook);
3890 if (SvOK (hook))
3891 {
2643 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3892 coro_readyhook = newSVsv (hook);
3893 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3894 }
3895 else
3896 {
3897 coro_readyhook = 0;
3898 CORO_READYHOOK = 0;
3899 }
2644 3900
2645int 3901int
2646prio (Coro::State coro, int newprio = 0) 3902prio (Coro::State coro, int newprio = 0)
2647 PROTOTYPE: $;$ 3903 PROTOTYPE: $;$
2648 ALIAS: 3904 ALIAS:
… …
2654 if (items > 1) 3910 if (items > 1)
2655 { 3911 {
2656 if (ix) 3912 if (ix)
2657 newprio = coro->prio - newprio; 3913 newprio = coro->prio - newprio;
2658 3914
2659 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3915 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2660 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3916 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2661 3917
2662 coro->prio = newprio; 3918 coro->prio = newprio;
2663 } 3919 }
2664} 3920}
2665 OUTPUT: 3921 OUTPUT:
… …
2679 CODE: 3935 CODE:
2680 RETVAL = coro_nready; 3936 RETVAL = coro_nready;
2681 OUTPUT: 3937 OUTPUT:
2682 RETVAL 3938 RETVAL
2683 3939
2684# for async_pool speedup
2685void 3940void
2686_pool_1 (SV *cb) 3941suspend (Coro::State self)
3942 PROTOTYPE: $
2687 CODE: 3943 CODE:
2688{ 3944 self->flags |= CF_SUSPENDED;
2689 HV *hv = (HV *)SvRV (coro_current);
2690 struct coro *coro = SvSTATE_hv ((SV *)hv);
2691 AV *defav = GvAV (PL_defgv);
2692 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2693 AV *invoke_av;
2694 int i, len;
2695 3945
2696 if (!invoke) 3946void
3947resume (Coro::State self)
3948 PROTOTYPE: $
3949 CODE:
3950 self->flags &= ~CF_SUSPENDED;
3951
3952void
3953_pool_handler (...)
3954 CODE:
3955 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3956
3957void
3958async_pool (SV *cv, ...)
3959 PROTOTYPE: &@
3960 PPCODE:
3961{
3962 HV *hv = (HV *)av_pop (av_async_pool);
3963 AV *av = newAV ();
3964 SV *cb = ST (0);
3965 int i;
3966
3967 av_extend (av, items - 2);
3968 for (i = 1; i < items; ++i)
3969 av_push (av, SvREFCNT_inc_NN (ST (i)));
3970
3971 if ((SV *)hv == &PL_sv_undef)
2697 { 3972 {
2698 SV *old = PL_diehook; 3973 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2699 PL_diehook = 0; 3974 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2700 SvREFCNT_dec (old); 3975 SvREFCNT_dec (sv);
2701 croak ("\3async_pool terminate\2\n");
2702 } 3976 }
2703 3977
2704 SvREFCNT_dec (coro->saved_deffh);
2705 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2706
2707 hv_store (hv, "desc", sizeof ("desc") - 1,
2708 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2709
2710 invoke_av = (AV *)SvRV (invoke);
2711 len = av_len (invoke_av);
2712
2713 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2714
2715 if (len > 0)
2716 { 3978 {
2717 av_fill (defav, len - 1); 3979 struct coro *coro = SvSTATE_hv (hv);
2718 for (i = 0; i < len; ++i) 3980
2719 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3981 assert (!coro->invoke_cb);
3982 assert (!coro->invoke_av);
3983 coro->invoke_cb = SvREFCNT_inc (cb);
3984 coro->invoke_av = av;
2720 } 3985 }
3986
3987 api_ready (aTHX_ (SV *)hv);
3988
3989 if (GIMME_V != G_VOID)
3990 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3991 else
3992 SvREFCNT_dec (hv);
2721} 3993}
3994
3995SV *
3996rouse_cb ()
3997 PROTOTYPE:
3998 CODE:
3999 RETVAL = coro_new_rouse_cb (aTHX);
4000 OUTPUT:
4001 RETVAL
2722 4002
2723void 4003void
2724_pool_2 (SV *cb) 4004rouse_wait (...)
4005 PROTOTYPE: ;$
4006 PPCODE:
4007 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4008
4009void
4010on_enter (SV *block)
4011 ALIAS:
4012 on_leave = 1
4013 PROTOTYPE: &
2725 CODE: 4014 CODE:
2726{ 4015{
2727 HV *hv = (HV *)SvRV (coro_current);
2728 struct coro *coro = SvSTATE_hv ((SV *)hv); 4016 struct coro *coro = SvSTATE_current;
4017 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2729 4018
2730 sv_setsv (cb, &PL_sv_undef); 4019 block = s_get_cv_croak (block);
2731 4020
2732 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4021 if (!*avp)
2733 coro->saved_deffh = 0; 4022 *avp = newAV ();
2734 4023
2735 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4024 av_push (*avp, SvREFCNT_inc (block));
2736 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2737 {
2738 SV *old = PL_diehook;
2739 PL_diehook = 0;
2740 SvREFCNT_dec (old);
2741 croak ("\3async_pool terminate\2\n");
2742 }
2743 4025
2744 av_clear (GvAV (PL_defgv)); 4026 if (!ix)
2745 hv_store (hv, "desc", sizeof ("desc") - 1, 4027 on_enterleave_call (aTHX_ block);
2746 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2747 4028
2748 coro->prio = 0; 4029 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2749 4030 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2750 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4031 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2751 api_trace (aTHX_ coro_current, 0);
2752
2753 av_push (av_async_pool, newSVsv (coro_current));
2754} 4032}
2755 4033
2756 4034
2757MODULE = Coro::State PACKAGE = PerlIO::cede 4035MODULE = Coro::State PACKAGE = PerlIO::cede
2758 4036
… …
2761 4039
2762 4040
2763MODULE = Coro::State PACKAGE = Coro::Semaphore 4041MODULE = Coro::State PACKAGE = Coro::Semaphore
2764 4042
2765SV * 4043SV *
2766new (SV *klass, SV *count_ = 0) 4044new (SV *klass, SV *count = 0)
2767 CODE: 4045 CODE:
2768{ 4046{
2769 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4047 int semcnt = 1;
2770 AV *av = newAV ();
2771 SV **ary;
2772 4048
2773 /* unfortunately, building manually saves memory */ 4049 if (count)
2774 Newx (ary, 2, SV *); 4050 {
2775 AvALLOC (av) = ary; 4051 SvGETMAGIC (count);
2776 AvARRAY (av) = ary;
2777 AvMAX (av) = 1;
2778 AvFILLp (av) = 0;
2779 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2780 4052
2781 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4053 if (SvOK (count))
4054 semcnt = SvIV (count);
4055 }
4056
4057 RETVAL = sv_bless (
4058 coro_waitarray_new (aTHX_ semcnt),
4059 GvSTASH (CvGV (cv))
4060 );
2782} 4061}
4062 OUTPUT:
4063 RETVAL
4064
4065# helper for Coro::Channel and others
4066SV *
4067_alloc (int count)
4068 CODE:
4069 RETVAL = coro_waitarray_new (aTHX_ count);
2783 OUTPUT: 4070 OUTPUT:
2784 RETVAL 4071 RETVAL
2785 4072
2786SV * 4073SV *
2787count (SV *self) 4074count (SV *self)
… …
2796 adjust = 1 4083 adjust = 1
2797 CODE: 4084 CODE:
2798 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4085 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2799 4086
2800void 4087void
2801down (SV *self) 4088down (...)
2802 CODE: 4089 CODE:
2803 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4090 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4091
4092void
4093wait (...)
4094 CODE:
4095 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2804 4096
2805void 4097void
2806try (SV *self) 4098try (SV *self)
2807 PPCODE: 4099 PPCODE:
2808{ 4100{
… …
2820 XSRETURN_NO; 4112 XSRETURN_NO;
2821} 4113}
2822 4114
2823void 4115void
2824waiters (SV *self) 4116waiters (SV *self)
2825 CODE: 4117 PPCODE:
2826{ 4118{
2827 AV *av = (AV *)SvRV (self); 4119 AV *av = (AV *)SvRV (self);
4120 int wcount = AvFILLp (av) + 1 - 1;
2828 4121
2829 if (GIMME_V == G_SCALAR) 4122 if (GIMME_V == G_SCALAR)
2830 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4123 XPUSHs (sv_2mortal (newSViv (wcount)));
2831 else 4124 else
2832 { 4125 {
2833 int i; 4126 int i;
2834 EXTEND (SP, AvFILLp (av) + 1 - 1); 4127 EXTEND (SP, wcount);
2835 for (i = 1; i <= AvFILLp (av); ++i) 4128 for (i = 1; i <= wcount; ++i)
2836 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4129 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2837 } 4130 }
2838} 4131}
4132
4133MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4134
4135void
4136_may_delete (SV *sem, int count, unsigned int extra_refs)
4137 PPCODE:
4138{
4139 AV *av = (AV *)SvRV (sem);
4140
4141 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4142 && AvFILLp (av) == 0 /* no waiters, just count */
4143 && SvIV (AvARRAY (av)[0]) == count)
4144 XSRETURN_YES;
4145
4146 XSRETURN_NO;
4147}
4148
4149MODULE = Coro::State PACKAGE = Coro::Signal
4150
4151SV *
4152new (SV *klass)
4153 CODE:
4154 RETVAL = sv_bless (
4155 coro_waitarray_new (aTHX_ 0),
4156 GvSTASH (CvGV (cv))
4157 );
4158 OUTPUT:
4159 RETVAL
4160
4161void
4162wait (...)
4163 CODE:
4164 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4165
4166void
4167broadcast (SV *self)
4168 CODE:
4169{
4170 AV *av = (AV *)SvRV (self);
4171 coro_signal_wake (aTHX_ av, AvFILLp (av));
4172}
4173
4174void
4175send (SV *self)
4176 CODE:
4177{
4178 AV *av = (AV *)SvRV (self);
4179
4180 if (AvFILLp (av))
4181 coro_signal_wake (aTHX_ av, 1);
4182 else
4183 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4184}
4185
4186IV
4187awaited (SV *self)
4188 CODE:
4189 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4190 OUTPUT:
4191 RETVAL
2839 4192
2840 4193
2841MODULE = Coro::State PACKAGE = Coro::AnyEvent 4194MODULE = Coro::State PACKAGE = Coro::AnyEvent
2842 4195
2843BOOT: 4196BOOT:
… …
2845 4198
2846void 4199void
2847_schedule (...) 4200_schedule (...)
2848 CODE: 4201 CODE:
2849{ 4202{
2850 static int incede; 4203 static int incede;
2851 4204
2852 api_cede_notself (aTHX); 4205 api_cede_notself (aTHX);
2853 4206
2854 ++incede; 4207 ++incede;
2855 while (coro_nready >= incede && api_cede (aTHX)) 4208 while (coro_nready >= incede && api_cede (aTHX))
… …
2871 4224
2872void 4225void
2873_register (char *target, char *proto, SV *req) 4226_register (char *target, char *proto, SV *req)
2874 CODE: 4227 CODE:
2875{ 4228{
2876 HV *st; 4229 SV *req_cv = s_get_cv_croak (req);
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 /* newXSproto doesn't return the CV on 5.8 */ 4230 /* newXSproto doesn't return the CV on 5.8 */
2880 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4231 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2881 sv_setpv ((SV *)slf_cv, proto); 4232 sv_setpv ((SV *)slf_cv, proto);
2882 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4233 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2883} 4234}
2884 4235
4236MODULE = Coro::State PACKAGE = Coro::Select
4237
4238void
4239patch_pp_sselect ()
4240 CODE:
4241 if (!coro_old_pp_sselect)
4242 {
4243 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4244 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4245 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4246 }
4247
4248void
4249unpatch_pp_sselect ()
4250 CODE:
4251 if (coro_old_pp_sselect)
4252 {
4253 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4254 coro_old_pp_sselect = 0;
4255 }
4256
4257MODULE = Coro::State PACKAGE = Coro::Util
4258
4259void
4260_exit (int code)
4261 CODE:
4262 _exit (code);
4263
4264NV
4265time ()
4266 CODE:
4267 RETVAL = nvtime (aTHX);
4268 OUTPUT:
4269 RETVAL
4270
4271NV
4272gettimeofday ()
4273 PPCODE:
4274{
4275 UV tv [2];
4276 u2time (aTHX_ tv);
4277 EXTEND (SP, 2);
4278 PUSHs (sv_2mortal (newSVuv (tv [0])));
4279 PUSHs (sv_2mortal (newSVuv (tv [1])));
4280}
4281

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