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Comparing Coro/Coro/State.xs (file contents):
Revision 1.280 by root, Sun Nov 16 09:43:18 2008 UTC vs.
Revision 1.471 by root, Fri Jul 14 23:20:07 2017 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SvREFCNT_dec_NN
28 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
29#endif
30
31#ifndef SvREFCNT_inc_NN
32 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
33#endif
34
35#ifndef SVs_PADSTALE
36# define SVs_PADSTALE 0
37#endif
38
39#ifdef PadARRAY
40# define NEWPADAPI 1
41# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
42#else
43typedef AV PADNAMELIST;
44# if !PERL_VERSION_ATLEAST(5,8,0)
45typedef AV PADLIST;
46typedef AV PAD;
47# endif
48# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
49# define PadlistMAX(pl) AvFILLp (pl)
50# define PadlistNAMES(pl) (*PadlistARRAY (pl))
51# define PadARRAY AvARRAY
52# define PadMAX AvFILLp
53# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
54#endif
55#ifndef PadnamelistREFCNT
56# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
57#endif
58#ifndef PadnamelistREFCNT_dec
59# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
60#endif
61
62/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
63/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
64#if PERL_VERSION_ATLEAST(5,19,0)
65# define SVt_BIND SVt_IV
66#endif
67
68#if defined(_WIN32)
69# undef HAS_GETTIMEOFDAY
18# undef setjmp 70# undef setjmp
19# undef longjmp 71# undef longjmp
20# undef _exit 72# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 73# define setjmp _setjmp /* deep magic */
22#else 74#else
23# include <inttypes.h> /* most portable stdint.h */ 75# include <inttypes.h> /* most portable stdint.h */
24#endif 76#endif
25 77
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 78/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 79static int cctx_max_idle = 4;
55 80
56#define PERL_VERSION_ATLEAST(a,b,c) \ 81#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 82# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD
108#endif
109
110#ifndef CORO_STACKGUARD
111# define CORO_STACKGUARD 0
112#endif 83#endif
113 84
114/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 88#endif
118 89
119/* The next macros try to return the current stack pointer, in an as 90/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 91 * portable way as possible. */
121#if __GNUC__ >= 4 92#if __GNUC__ >= 4
93# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 94# define STACKLEVEL __builtin_frame_address (0)
123#else 95#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 96# define dSTACKLEVEL volatile void *stacklevel
97# define STACKLEVEL ((void *)&stacklevel)
125#endif 98#endif
126 99
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 100#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 101
144#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
145 104
146#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
147# if CORO_PTHREAD 106# if CORO_PTHREAD
148static void *coro_thx; 107static void *coro_thx;
149# endif 108# endif
150#endif 109#endif
151 110
152/* helper storage struct for Coro::AIO */ 111#ifdef __linux
153struct io_state 112# include <time.h> /* for timespec */
154{ 113# include <syscall.h> /* for SYS_* */
155 AV *res; 114# ifdef SYS_clock_gettime
156 int errorno; 115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 116# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 118# endif
160}; 119#endif
120
121/* one off bugfix for perl 5.22 */
122#if PERL_VERSION_ATLEAST(5,22,0) && !PERL_VERSION_ATLEAST(5,24,0)
123# undef PadlistNAMES
124# define PadlistNAMES(pl) *((PADNAMELIST **)PadlistARRAY (pl))
125#endif
126
127#if PERL_VERSION_ATLEAST(5,24,0)
128# define SUB_ARGARRAY PL_curpad[0]
129#else
130# define SUB_ARGARRAY (SV *)cx->blk_sub.argarray
131#endif
132
133/* perl usually suppresses asserts. for debugging, we sometimes force it to be on */
134#if 0
135# undef NDEBUG
136# include <assert.h>
137#endif
161 138
162static double (*nvtime)(); /* so why doesn't it take void? */ 139static double (*nvtime)(); /* so why doesn't it take void? */
140static void (*u2time)(pTHX_ UV ret[2]);
141
142/* we hijack an hopefully unused CV flag for our purposes */
143#define CVf_SLF 0x4000
144static OP *pp_slf (pTHX);
145static void slf_destroy (pTHX_ struct coro *coro);
163 146
164static U32 cctx_gen; 147static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 148static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 149static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 150static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 151static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 152static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 153static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next; 154
155static AV *av_destroy; /* destruction queue */
156static SV *sv_manager; /* the manager coro */
157static SV *sv_idle; /* $Coro::idle */
172 158
173static GV *irsgv; /* $/ */ 159static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 160static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 161static SV *rv_diehook;
176static SV *rv_warnhook; 162static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */
178 163
179/* async_pool helper stuff */ 164/* async_pool helper stuff */
180static SV *sv_pool_rss; 165static SV *sv_pool_rss;
181static SV *sv_pool_size; 166static SV *sv_pool_size;
167static SV *sv_async_pool_idle; /* description string */
182static AV *av_async_pool; 168static AV *av_async_pool; /* idle pool */
169static SV *sv_Coro; /* class string */
170static CV *cv_pool_handler;
183 171
184/* Coro::AnyEvent */ 172/* Coro::AnyEvent */
185static SV *sv_activity; 173static SV *sv_activity;
186 174
175/* enable processtime/realtime profiling */
176static char enable_times;
177typedef U32 coro_ts[2];
178static coro_ts time_real, time_cpu;
179static char times_valid;
180
187static struct coro_cctx *cctx_first; 181static struct coro_cctx *cctx_first;
188static int cctx_count, cctx_idle; 182static int cctx_count, cctx_idle;
189 183
190enum { 184enum
185{
191 CC_MAPPED = 0x01, 186 CC_MAPPED = 0x01,
192 CC_NOREUSE = 0x02, /* throw this away after tracing */ 187 CC_NOREUSE = 0x02, /* throw this away after tracing */
193 CC_TRACE = 0x04, 188 CC_TRACE = 0x04,
194 CC_TRACE_SUB = 0x08, /* trace sub calls */ 189 CC_TRACE_SUB = 0x08, /* trace sub calls */
195 CC_TRACE_LINE = 0x10, /* trace each statement */ 190 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
200typedef struct coro_cctx 195typedef struct coro_cctx
201{ 196{
202 struct coro_cctx *next; 197 struct coro_cctx *next;
203 198
204 /* the stack */ 199 /* the stack */
205 void *sptr; 200 struct coro_stack stack;
206 size_t ssize;
207 201
208 /* cpu state */ 202 /* cpu state */
209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 203 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
204#ifndef NDEBUG
210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 205 JMPENV *idle_te; /* same as idle_sp, but for top_env */
206#endif
211 JMPENV *top_env; 207 JMPENV *top_env;
212 coro_context cctx; 208 coro_context cctx;
213 209
214 U32 gen; 210 U32 gen;
215#if CORO_USE_VALGRIND 211#if CORO_USE_VALGRIND
216 int valgrind_id; 212 int valgrind_id;
217#endif 213#endif
218 unsigned char flags; 214 unsigned char flags;
219} coro_cctx; 215} coro_cctx;
220 216
217static coro_cctx *cctx_current; /* the currently running cctx */
218
219/*****************************************************************************/
220
221static MGVTBL coro_state_vtbl;
222
221enum { 223enum
224{
222 CF_RUNNING = 0x0001, /* coroutine is running */ 225 CF_RUNNING = 0x0001, /* coroutine is running */
223 CF_READY = 0x0002, /* coroutine is ready */ 226 CF_READY = 0x0002, /* coroutine is ready */
224 CF_NEW = 0x0004, /* has never been switched to */ 227 CF_NEW = 0x0004, /* has never been switched to */
225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 228 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
229 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
230 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
226}; 231};
227 232
228/* the structure where most of the perl state is stored, overlaid on the cxstack */ 233/* the structure where most of the perl state is stored, overlaid on the cxstack */
229typedef struct 234typedef struct
230{ 235{
231 SV *defsv;
232 AV *defav;
233 SV *errsv;
234 SV *irsgv;
235#define VAR(name,type) type name; 236 #define VARx(name,expr,type) type name;
236# include "state.h" 237 #include "state.h"
237#undef VAR
238} perl_slots; 238} perl_slots;
239 239
240/* how many context stack entries do we need for perl_slots */
240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 241#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
241 242
242/* this is a structure representing a perl-level coroutine */ 243/* this is a structure representing a perl-level coroutine */
243struct coro { 244struct coro
245{
244 /* the C coroutine allocated to this perl coroutine, if any */ 246 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 247 coro_cctx *cctx;
246 248
247 /* process data */ 249 /* ready queue */
250 struct coro *next_ready;
251
252 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 253 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 254 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 255 perl_slots *slot; /* basically the saved sp */
251 256
257 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 258 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 259 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 260 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
257 261
258 /* statistics */ 262 /* statistics */
259 int usecount; /* number of transfers to this coro */ 263 int usecount; /* number of transfers to this coro */
260 264
261 /* coro process data */ 265 /* coro process data */
262 int prio; 266 int prio;
263 SV *throw; /* exception to be thrown */ 267 SV *except; /* exception to be thrown */
268 SV *rouse_cb; /* last rouse callback */
269 AV *on_destroy; /* callbacks or coros to notify on destroy */
270 AV *status; /* the exit status list */
264 271
265 /* async_pool */ 272 /* async_pool */
266 SV *saved_deffh; 273 SV *saved_deffh;
274 SV *invoke_cb;
275 AV *invoke_av;
276
277 /* on_enter/on_leave */
278 AV *on_enter; AV *on_enter_xs;
279 AV *on_leave; AV *on_leave_xs;
280
281 /* swap_sv */
282 AV *swap_sv;
283
284 /* times */
285 coro_ts t_cpu, t_real;
267 286
268 /* linked list */ 287 /* linked list */
269 struct coro *next, *prev; 288 struct coro *next, *prev;
270}; 289};
271 290
272typedef struct coro *Coro__State; 291typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 292typedef struct coro *Coro__State_or_hashref;
274 293
294/* the following variables are effectively part of the perl context */
295/* and get copied between struct coro and these variables */
296/* the main reason we don't support windows process emulation */
275static struct CoroSLF slf_frame; /* the current slf frame */ 297static struct CoroSLF slf_frame; /* the current slf frame */
276 298
277/** Coro ********************************************************************/ 299/** Coro ********************************************************************/
278 300
279#define PRIO_MAX 3 301#define CORO_PRIO_MAX 3
280#define PRIO_HIGH 1 302#define CORO_PRIO_HIGH 1
281#define PRIO_NORMAL 0 303#define CORO_PRIO_NORMAL 0
282#define PRIO_LOW -1 304#define CORO_PRIO_LOW -1
283#define PRIO_IDLE -3 305#define CORO_PRIO_IDLE -3
284#define PRIO_MIN -4 306#define CORO_PRIO_MIN -4
285 307
286/* for Coro.pm */ 308/* for Coro.pm */
287static SV *coro_current; 309static SV *coro_current;
288static SV *coro_readyhook; 310static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 311static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
312static CV *cv_coro_run;
290static struct coro *coro_first; 313static struct coro *coro_first;
291#define coro_nready coroapi.nready 314#define coro_nready coroapi.nready
292 315
316/** JIT *********************************************************************/
317
318#if CORO_JIT
319 /* APPLE doesn't have mmap though */
320 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
321 #ifndef CORO_JIT_TYPE
322 #if ECB_AMD64 && CORO_JIT_UNIXY
323 #define CORO_JIT_TYPE "amd64-unix"
324 #elif __i386 && CORO_JIT_UNIXY
325 #define CORO_JIT_TYPE "x86-unix"
326 #endif
327 #endif
328#endif
329
330#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
331 #undef CORO_JIT
332#endif
333
334#if CORO_JIT
335 typedef void (*load_save_perl_slots_type)(perl_slots *);
336 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
337#endif
338
339/** Coro::Select ************************************************************/
340
341static OP *(*coro_old_pp_sselect) (pTHX);
342static SV *coro_select_select;
343
344/* horrible hack, but if it works... */
345static OP *
346coro_pp_sselect (pTHX)
347{
348 dSP;
349 PUSHMARK (SP - 4); /* fake argument list */
350 XPUSHs (coro_select_select);
351 PUTBACK;
352
353 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
354 PL_op->op_flags |= OPf_STACKED;
355 PL_op->op_private = 0;
356 return PL_ppaddr [OP_ENTERSUB](aTHX);
357}
358
359/** time stuff **************************************************************/
360
361#ifdef HAS_GETTIMEOFDAY
362
363ecb_inline void
364coro_u2time (pTHX_ UV ret[2])
365{
366 struct timeval tv;
367 gettimeofday (&tv, 0);
368
369 ret [0] = tv.tv_sec;
370 ret [1] = tv.tv_usec;
371}
372
373ecb_inline double
374coro_nvtime (void)
375{
376 struct timeval tv;
377 gettimeofday (&tv, 0);
378
379 return tv.tv_sec + tv.tv_usec * 1e-6;
380}
381
382ecb_inline void
383time_init (pTHX)
384{
385 nvtime = coro_nvtime;
386 u2time = coro_u2time;
387}
388
389#else
390
391ecb_inline void
392time_init (pTHX)
393{
394 SV **svp;
395
396 require_pv ("Time/HiRes.pm");
397
398 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
399
400 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
401 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
402
403 nvtime = INT2PTR (double (*)(), SvIV (*svp));
404
405 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
406 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
407}
408
409#endif
410
293/** lowlevel stuff **********************************************************/ 411/** lowlevel stuff **********************************************************/
294 412
295static SV * 413static SV * ecb_noinline
296coro_get_sv (pTHX_ const char *name, int create) 414coro_get_sv (pTHX_ const char *name, int create)
297{ 415{
298#if PERL_VERSION_ATLEAST (5,10,0) 416#if PERL_VERSION_ATLEAST (5,10,0)
299 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 417 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
300 get_sv (name, create); 418 get_sv (name, create);
301#endif 419#endif
302 return get_sv (name, create); 420 return get_sv (name, create);
303} 421}
304 422
305static AV * 423static AV * ecb_noinline
306coro_get_av (pTHX_ const char *name, int create) 424coro_get_av (pTHX_ const char *name, int create)
307{ 425{
308#if PERL_VERSION_ATLEAST (5,10,0) 426#if PERL_VERSION_ATLEAST (5,10,0)
309 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 427 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
310 get_av (name, create); 428 get_av (name, create);
311#endif 429#endif
312 return get_av (name, create); 430 return get_av (name, create);
313} 431}
314 432
315static HV * 433static HV * ecb_noinline
316coro_get_hv (pTHX_ const char *name, int create) 434coro_get_hv (pTHX_ const char *name, int create)
317{ 435{
318#if PERL_VERSION_ATLEAST (5,10,0) 436#if PERL_VERSION_ATLEAST (5,10,0)
319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 437 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
320 get_hv (name, create); 438 get_hv (name, create);
321#endif 439#endif
322 return get_hv (name, create); 440 return get_hv (name, create);
323} 441}
324 442
325static AV * 443ecb_inline void
444coro_times_update (void)
445{
446#ifdef coro_clock_gettime
447 struct timespec ts;
448
449 ts.tv_sec = ts.tv_nsec = 0;
450 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
451 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
452
453 ts.tv_sec = ts.tv_nsec = 0;
454 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
455 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
456#else
457 dTHX;
458 UV tv[2];
459
460 u2time (aTHX_ tv);
461 time_real [0] = tv [0];
462 time_real [1] = tv [1] * 1000;
463#endif
464}
465
466ecb_inline void
467coro_times_add (struct coro *c)
468{
469 c->t_real [1] += time_real [1];
470 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
471 c->t_real [0] += time_real [0];
472
473 c->t_cpu [1] += time_cpu [1];
474 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
475 c->t_cpu [0] += time_cpu [0];
476}
477
478ecb_inline void
479coro_times_sub (struct coro *c)
480{
481 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
482 c->t_real [1] -= time_real [1];
483 c->t_real [0] -= time_real [0];
484
485 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
486 c->t_cpu [1] -= time_cpu [1];
487 c->t_cpu [0] -= time_cpu [0];
488}
489
490/*****************************************************************************/
491/* magic glue */
492
493#define CORO_MAGIC_type_cv 26
494#define CORO_MAGIC_type_state PERL_MAGIC_ext
495
496#define CORO_MAGIC_NN(sv, type) \
497 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
498 ? SvMAGIC (sv) \
499 : mg_find (sv, type))
500
501#define CORO_MAGIC(sv, type) \
502 (ecb_expect_true (SvMAGIC (sv)) \
503 ? CORO_MAGIC_NN (sv, type) \
504 : 0)
505
506#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
507#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
508
509ecb_inline MAGIC *
510SvSTATEhv_p (pTHX_ SV *coro)
511{
512 MAGIC *mg;
513
514 if (ecb_expect_true (
515 SvTYPE (coro) == SVt_PVHV
516 && (mg = CORO_MAGIC_state (coro))
517 && mg->mg_virtual == &coro_state_vtbl
518 ))
519 return mg;
520
521 return 0;
522}
523
524ecb_inline struct coro *
525SvSTATE_ (pTHX_ SV *coro_sv)
526{
527 MAGIC *mg;
528
529 if (SvROK (coro_sv))
530 coro_sv = SvRV (coro_sv);
531
532 mg = SvSTATEhv_p (aTHX_ coro_sv);
533 if (!mg)
534 croak ("Coro::State object required");
535
536 return (struct coro *)mg->mg_ptr;
537}
538
539#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
540
541/* faster than SvSTATE, but expects a coroutine hv */
542#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
543#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
544
545/*****************************************************************************/
546/* padlist management and caching */
547
548ecb_inline PADLIST *
326coro_clone_padlist (pTHX_ CV *cv) 549coro_derive_padlist (pTHX_ CV *cv)
327{ 550{
328 AV *padlist = CvPADLIST (cv); 551 PADLIST *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 552 PADLIST *newpadlist;
553 PADNAMELIST *padnames;
554 PAD *newpad;
555 PADOFFSET off = PadlistMAX (padlist) + 1;
330 556
331 newpadlist = newAV (); 557#if NEWPADAPI
558
559 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
560 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
561 while (!PadlistARRAY (padlist)[off - 1])
562 --off;
563
564 Perl_pad_push (aTHX_ padlist, off);
565
566 newpad = PadlistARRAY (padlist)[off];
567 PadlistARRAY (padlist)[off] = 0;
568
569#else
570
571#if PERL_VERSION_ATLEAST (5,10,0)
572 Perl_pad_push (aTHX_ padlist, off);
573#else
574 Perl_pad_push (aTHX_ padlist, off, 1);
575#endif
576
577 newpad = PadlistARRAY (padlist)[off];
578 PadlistMAX (padlist) = off - 1;
579
580#endif
581
582 newPADLIST (newpadlist);
583#if !PERL_VERSION_ATLEAST(5,15,3)
584 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
332 AvREAL_off (newpadlist); 585 AvREAL_off (newpadlist);
333#if PERL_VERSION_ATLEAST (5,10,0)
334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
335#else
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 586#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist);
340 587
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 588 /* Already extended to 2 elements by newPADLIST. */
342 av_store (newpadlist, 1, (SV *)newpad); 589 PadlistMAX (newpadlist) = 1;
590
591 padnames = PadlistNAMES (padlist);
592 ++PadnamelistREFCNT (padnames);
593 PadlistNAMES (newpadlist) = padnames;
594
595 PadlistARRAY (newpadlist)[1] = newpad;
343 596
344 return newpadlist; 597 return newpadlist;
345} 598}
346 599
347static void 600ecb_inline void
348free_padlist (pTHX_ AV *padlist) 601free_padlist (pTHX_ PADLIST *padlist)
349{ 602{
350 /* may be during global destruction */ 603 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 604 if (!IN_DESTRUCT)
352 { 605 {
353 I32 i = AvFILLp (padlist); 606 I32 i = PadlistMAX (padlist);
354 while (i >= 0) 607
608 while (i > 0) /* special-case index 0 */
355 { 609 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 610 /* we try to be extra-careful here */
611 PAD *pad = PadlistARRAY (padlist)[i--];
612
357 if (svp) 613 if (pad)
358 { 614 {
359 SV *sv; 615 I32 j = PadMAX (pad);
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 616
617 while (j >= 0)
361 SvREFCNT_dec (sv); 618 SvREFCNT_dec (PadARRAY (pad)[j--]);
362 619
620 PadMAX (pad) = -1;
363 SvREFCNT_dec (*svp); 621 SvREFCNT_dec (pad);
364 } 622 }
365 } 623 }
366 624
625 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
626
627#if NEWPADAPI
628 Safefree (PadlistARRAY (padlist));
629 Safefree (padlist);
630#else
631 AvFILLp (padlist) = -1;
632 AvREAL_off (padlist);
367 SvREFCNT_dec ((SV*)padlist); 633 SvREFCNT_dec ((SV*)padlist);
634#endif
368 } 635 }
369} 636}
370 637
371static int 638static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 639coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 640{
374 AV *padlist; 641 PADLIST *padlist;
375 AV *av = (AV *)mg->mg_obj; 642 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
643 size_t len = *(size_t *)mg->mg_ptr;
376 644
377 /* casting is fun. */ 645 /* perl manages to free our internal AV and _then_ call us */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 646 if (IN_DESTRUCT)
647 return 0;
648
649 while (len--)
379 free_padlist (aTHX_ padlist); 650 free_padlist (aTHX_ padlists[len]);
380
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 651
383 return 0; 652 return 0;
384} 653}
385
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 654
389static MGVTBL coro_cv_vtbl = { 655static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 656 0, 0, 0, 0,
391 coro_cv_free 657 coro_cv_free
392}; 658};
393 659
394#define CORO_MAGIC(sv, type) \
395 SvMAGIC (sv) \
396 ? SvMAGIC (sv)->mg_type == type \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0
400
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro)
406{
407 HV *stash;
408 MAGIC *mg;
409
410 if (SvROK (coro))
411 coro = SvRV (coro);
412
413 if (expect_false (SvTYPE (coro) != SVt_PVHV))
414 croak ("Coro::State object required");
415
416 stash = SvSTASH (coro);
417 if (expect_false (stash != coro_stash && stash != coro_state_stash))
418 {
419 /* very slow, but rare, check */
420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
421 croak ("Coro::State object required");
422 }
423
424 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr;
426}
427
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429
430/* the next two functions merely cache the padlists */ 660/* the next two functions merely cache the padlists */
431static void 661ecb_inline void
432get_padlist (pTHX_ CV *cv) 662get_padlist (pTHX_ CV *cv)
433{ 663{
434 MAGIC *mg = CORO_MAGIC_cv (cv); 664 MAGIC *mg = CORO_MAGIC_cv (cv);
435 AV *av; 665 size_t *lenp;
436 666
437 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 667 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
438 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 668 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
439 else 669 else
440 { 670 {
441#if CORO_PREFER_PERL_FUNCTIONS 671#if CORO_PREFER_PERL_FUNCTIONS
442 /* this is probably cleaner? but also slower! */ 672 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */ 673 /* in practise, it seems to be less stable */
444 CV *cp = Perl_cv_clone (cv); 674 CV *cp = Perl_cv_clone (aTHX_ cv);
445 CvPADLIST (cv) = CvPADLIST (cp); 675 CvPADLIST (cv) = CvPADLIST (cp);
446 CvPADLIST (cp) = 0; 676 CvPADLIST (cp) = 0;
447 SvREFCNT_dec (cp); 677 SvREFCNT_dec (cp);
448#else 678#else
449 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 679 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
450#endif 680#endif
451 } 681 }
452} 682}
453 683
454static void 684ecb_inline void
455put_padlist (pTHX_ CV *cv) 685put_padlist (pTHX_ CV *cv)
456{ 686{
457 MAGIC *mg = CORO_MAGIC_cv (cv); 687 MAGIC *mg = CORO_MAGIC_cv (cv);
458 AV *av;
459 688
460 if (expect_false (!mg)) 689 if (ecb_expect_false (!mg))
690 {
461 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 691 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
692 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
693 mg->mg_len = 1; /* so mg_free frees mg_ptr */
694 }
695 else
696 Renew (mg->mg_ptr,
697 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
698 char);
462 699
463 av = (AV *)mg->mg_obj; 700 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
464
465 if (expect_false (AvFILLp (av) >= AvMAX (av)))
466 av_extend (av, AvMAX (av) + 1);
467
468 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
469} 701}
470 702
471/** load & save, init *******************************************************/ 703/** load & save, init *******************************************************/
704
705ecb_inline void
706swap_sv (SV *a, SV *b)
707{
708 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
709 SV tmp;
710
711 /* swap sv_any */
712 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
713
714 /* swap sv_flags */
715 SvFLAGS (&tmp) = SvFLAGS (a);
716 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
717 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
718
719#if PERL_VERSION_ATLEAST (5,10,0)
720 /* perl 5.10 and later complicates this _quite_ a bit, but it also
721 * is much faster, so no quarrels here. alternatively, we could
722 * sv_upgrade to avoid this.
723 */
724 {
725 /* swap sv_u */
726 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
727
728 /* if SvANY points to the head, we need to adjust the pointers,
729 * as the pointer for a still points to b, and maybe vice versa.
730 */
731 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
732 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
733 svany_in_head_set |= 1 << SVt_NV;
734 #endif
735
736 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
737
738 if (svany_in_head (SvTYPE (a)))
739 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
740
741 if (svany_in_head (SvTYPE (b)))
742 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
743 }
744#endif
745}
746
747/* swap sv heads, at least logically */
748static void
749swap_svs_enter (pTHX_ Coro__State c)
750{
751 int i;
752
753 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
754 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
755}
756
757static void
758swap_svs_leave (pTHX_ Coro__State c)
759{
760 int i;
761
762 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
763 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
764}
765
766#define SWAP_SVS_ENTER(coro) \
767 if (ecb_expect_false ((coro)->swap_sv)) \
768 swap_svs_enter (aTHX_ (coro))
769
770#define SWAP_SVS_LEAVE(coro) \
771 if (ecb_expect_false ((coro)->swap_sv)) \
772 swap_svs_leave (aTHX_ (coro))
773
774static void
775on_enterleave_call (pTHX_ SV *cb);
472 776
473static void 777static void
474load_perl (pTHX_ Coro__State c) 778load_perl (pTHX_ Coro__State c)
475{ 779{
476 perl_slots *slot = c->slot; 780 perl_slots *slot = c->slot;
477 c->slot = 0; 781 c->slot = 0;
478 782
479 PL_mainstack = c->mainstack; 783 PL_mainstack = c->mainstack;
480 784
481 GvSV (PL_defgv) = slot->defsv; 785#if CORO_JIT
482 GvAV (PL_defgv) = slot->defav; 786 load_perl_slots (slot);
483 GvSV (PL_errgv) = slot->errsv; 787#else
484 GvSV (irsgv) = slot->irsgv;
485
486 #define VAR(name,type) PL_ ## name = slot->name; 788 #define VARx(name,expr,type) expr = slot->name;
487 # include "state.h" 789 #include "state.h"
488 #undef VAR 790#endif
489 791
490 { 792 {
491 dSP; 793 dSP;
492 794
493 CV *cv; 795 CV *cv;
494 796
495 /* now do the ugly restore mess */ 797 /* now do the ugly restore mess */
496 while (expect_true (cv = (CV *)POPs)) 798 while (ecb_expect_true (cv = (CV *)POPs))
497 { 799 {
498 put_padlist (aTHX_ cv); /* mark this padlist as available */ 800 put_padlist (aTHX_ cv); /* mark this padlist as available */
499 CvDEPTH (cv) = PTR2IV (POPs); 801 CvDEPTH (cv) = PTR2IV (POPs);
500 CvPADLIST (cv) = (AV *)POPs; 802 CvPADLIST (cv) = (PADLIST *)POPs;
501 } 803 }
502 804
503 PUTBACK; 805 PUTBACK;
504 } 806 }
505 807
506 slf_frame = c->slf_frame; 808 slf_frame = c->slf_frame;
809 CORO_THROW = c->except;
810
811 if (ecb_expect_false (enable_times))
812 {
813 if (ecb_expect_false (!times_valid))
814 coro_times_update ();
815
816 coro_times_sub (c);
817 }
818
819 if (ecb_expect_false (c->on_enter))
820 {
821 int i;
822
823 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
824 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
825 }
826
827 if (ecb_expect_false (c->on_enter_xs))
828 {
829 int i;
830
831 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
832 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
833 }
834
835 SWAP_SVS_ENTER (c);
507} 836}
508 837
509static void 838static void
510save_perl (pTHX_ Coro__State c) 839save_perl (pTHX_ Coro__State c)
511{ 840{
841 SWAP_SVS_LEAVE (c);
842
843 if (ecb_expect_false (c->on_leave_xs))
844 {
845 int i;
846
847 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
848 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
849 }
850
851 if (ecb_expect_false (c->on_leave))
852 {
853 int i;
854
855 for (i = AvFILLp (c->on_leave); i >= 0; --i)
856 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
857 }
858
859 times_valid = 0;
860
861 if (ecb_expect_false (enable_times))
862 {
863 coro_times_update (); times_valid = 1;
864 coro_times_add (c);
865 }
866
867 c->except = CORO_THROW;
512 c->slf_frame = slf_frame; 868 c->slf_frame = slf_frame;
513 869
514 { 870 {
515 dSP; 871 dSP;
516 I32 cxix = cxstack_ix; 872 I32 cxix = cxstack_ix;
… …
524 880
525 XPUSHs (Nullsv); 881 XPUSHs (Nullsv);
526 /* this loop was inspired by pp_caller */ 882 /* this loop was inspired by pp_caller */
527 for (;;) 883 for (;;)
528 { 884 {
529 while (expect_true (cxix >= 0)) 885 while (ecb_expect_true (cxix >= 0))
530 { 886 {
531 PERL_CONTEXT *cx = &ccstk[cxix--]; 887 PERL_CONTEXT *cx = &ccstk[cxix--];
532 888
533 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 889 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
534 { 890 {
535 CV *cv = cx->blk_sub.cv; 891 CV *cv = cx->blk_sub.cv;
536 892
537 if (expect_true (CvDEPTH (cv))) 893 if (ecb_expect_true (CvDEPTH (cv)))
538 { 894 {
539 EXTEND (SP, 3); 895 EXTEND (SP, 3);
540 PUSHs ((SV *)CvPADLIST (cv)); 896 PUSHs ((SV *)CvPADLIST (cv));
541 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 897 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
542 PUSHs ((SV *)cv); 898 PUSHs ((SV *)cv);
… …
545 get_padlist (aTHX_ cv); 901 get_padlist (aTHX_ cv);
546 } 902 }
547 } 903 }
548 } 904 }
549 905
550 if (expect_true (top_si->si_type == PERLSI_MAIN)) 906 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
551 break; 907 break;
552 908
553 top_si = top_si->si_prev; 909 top_si = top_si->si_prev;
554 ccstk = top_si->si_cxstack; 910 ccstk = top_si->si_cxstack;
555 cxix = top_si->si_cxix; 911 cxix = top_si->si_cxix;
… …
557 913
558 PUTBACK; 914 PUTBACK;
559 } 915 }
560 916
561 /* allocate some space on the context stack for our purposes */ 917 /* allocate some space on the context stack for our purposes */
562 /* we manually unroll here, as usually 2 slots is enough */ 918 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
563 if (SLOT_COUNT >= 1) CXINC;
564 if (SLOT_COUNT >= 2) CXINC;
565 if (SLOT_COUNT >= 3) CXINC;
566 { 919 {
567 int i; 920 unsigned int i;
921
568 for (i = 3; i < SLOT_COUNT; ++i) 922 for (i = 0; i < SLOT_COUNT; ++i)
569 CXINC; 923 CXINC;
570 } 924
571 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 925 cxstack_ix -= SLOT_COUNT; /* undo allocation */
926 }
572 927
573 c->mainstack = PL_mainstack; 928 c->mainstack = PL_mainstack;
574 929
575 { 930 {
576 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 931 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
577 932
578 slot->defav = GvAV (PL_defgv); 933#if CORO_JIT
579 slot->defsv = DEFSV; 934 save_perl_slots (slot);
580 slot->errsv = ERRSV; 935#else
581 slot->irsgv = GvSV (irsgv);
582
583 #define VAR(name,type) slot->name = PL_ ## name; 936 #define VARx(name,expr,type) slot->name = expr;
584 # include "state.h" 937 #include "state.h"
585 #undef VAR 938#endif
586 } 939 }
587} 940}
588 941
589/* 942/*
590 * allocate various perl stacks. This is almost an exact copy 943 * allocate various perl stacks. This is almost an exact copy
591 * of perl.c:init_stacks, except that it uses less memory 944 * of perl.c:init_stacks, except that it uses less memory
592 * on the (sometimes correct) assumption that coroutines do 945 * on the (sometimes correct) assumption that coroutines do
593 * not usually need a lot of stackspace. 946 * not usually need a lot of stackspace.
594 */ 947 */
595#if CORO_PREFER_PERL_FUNCTIONS 948#if CORO_PREFER_PERL_FUNCTIONS
596# define coro_init_stacks init_stacks 949# define coro_init_stacks(thx) init_stacks ()
597#else 950#else
598static void 951static void
599coro_init_stacks (pTHX) 952coro_init_stacks (pTHX)
600{ 953{
601 PL_curstackinfo = new_stackinfo(32, 8); 954 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
602 PL_curstackinfo->si_type = PERLSI_MAIN; 955 PL_curstackinfo->si_type = PERLSI_MAIN;
603 PL_curstack = PL_curstackinfo->si_stack; 956 PL_curstack = PL_curstackinfo->si_stack;
604 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 957 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
605 958
606 PL_stack_base = AvARRAY(PL_curstack); 959 PL_stack_base = AvARRAY(PL_curstack);
… …
621#endif 974#endif
622 975
623 New(54,PL_scopestack,8,I32); 976 New(54,PL_scopestack,8,I32);
624 PL_scopestack_ix = 0; 977 PL_scopestack_ix = 0;
625 PL_scopestack_max = 8; 978 PL_scopestack_max = 8;
979#if HAS_SCOPESTACK_NAME
980 New(54,PL_scopestack_name,8,const char*);
981#endif
626 982
627 New(54,PL_savestack,24,ANY); 983 New(54,PL_savestack,24,ANY);
628 PL_savestack_ix = 0; 984 PL_savestack_ix = 0;
629 PL_savestack_max = 24; 985 PL_savestack_max = 24;
986#if PERL_VERSION_ATLEAST (5,24,0)
987 /* perl 5.24 moves SS_MAXPUSH optimisation from */
988 /* the header macros to PL_savestack_max */
989 PL_savestack_max -= SS_MAXPUSH;
990#endif
630 991
631#if !PERL_VERSION_ATLEAST (5,10,0) 992#if !PERL_VERSION_ATLEAST (5,10,0)
632 New(54,PL_retstack,4,OP*); 993 New(54,PL_retstack,4,OP*);
633 PL_retstack_ix = 0; 994 PL_retstack_ix = 0;
634 PL_retstack_max = 4; 995 PL_retstack_max = 4;
… …
658 } 1019 }
659 1020
660 Safefree (PL_tmps_stack); 1021 Safefree (PL_tmps_stack);
661 Safefree (PL_markstack); 1022 Safefree (PL_markstack);
662 Safefree (PL_scopestack); 1023 Safefree (PL_scopestack);
1024#if HAS_SCOPESTACK_NAME
1025 Safefree (PL_scopestack_name);
1026#endif
663 Safefree (PL_savestack); 1027 Safefree (PL_savestack);
664#if !PERL_VERSION_ATLEAST (5,10,0) 1028#if !PERL_VERSION_ATLEAST (5,10,0)
665 Safefree (PL_retstack); 1029 Safefree (PL_retstack);
666#endif 1030#endif
667} 1031}
668 1032
1033#define CORO_RSS \
1034 rss += sizeof (SYM (curstackinfo)); \
1035 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
1036 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
1037 rss += SYM (tmps_max) * sizeof (SV *); \
1038 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
1039 rss += SYM (scopestack_max) * sizeof (I32); \
1040 rss += SYM (savestack_max) * sizeof (ANY);
1041
669static size_t 1042static size_t
670coro_rss (pTHX_ struct coro *coro) 1043coro_rss (pTHX_ struct coro *coro)
671{ 1044{
672 size_t rss = sizeof (*coro); 1045 size_t rss = sizeof (*coro);
673 1046
674 if (coro->mainstack) 1047 if (coro->mainstack)
675 { 1048 {
676 perl_slots tmp_slot;
677 perl_slots *slot;
678
679 if (coro->flags & CF_RUNNING) 1049 if (coro->flags & CF_RUNNING)
680 { 1050 {
681 slot = &tmp_slot; 1051 #define SYM(sym) PL_ ## sym
682 1052 CORO_RSS;
683 #define VAR(name,type) slot->name = PL_ ## name;
684 # include "state.h"
685 #undef VAR 1053 #undef SYM
686 } 1054 }
687 else 1055 else
688 slot = coro->slot;
689
690 if (slot)
691 { 1056 {
692 rss += sizeof (slot->curstackinfo); 1057 #define SYM(sym) coro->slot->sym
693 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1058 CORO_RSS;
694 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1059 #undef SYM
695 rss += slot->tmps_max * sizeof (SV *);
696 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
697 rss += slot->scopestack_max * sizeof (I32);
698 rss += slot->savestack_max * sizeof (ANY);
699
700#if !PERL_VERSION_ATLEAST (5,10,0)
701 rss += slot->retstack_max * sizeof (OP *);
702#endif
703 } 1060 }
704 } 1061 }
705 1062
706 return rss; 1063 return rss;
707} 1064}
708 1065
709/** coroutine stack handling ************************************************/ 1066/** provide custom get/set/clear methods for %SIG elements ******************/
710
711static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
712static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
713static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
714 1067
715/* apparently < 5.8.8 */ 1068/* apparently < 5.8.8 */
716#ifndef MgPV_nolen_const 1069#ifndef MgPV_nolen_const
717#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1070#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
718 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1071 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
719 (const char*)(mg)->mg_ptr) 1072 (const char*)(mg)->mg_ptr)
720#endif 1073#endif
721 1074
1075/* this will be a patched copy of PL_vtbl_sigelem */
1076static MGVTBL coro_sigelem_vtbl;
1077
1078static int ecb_cold
1079coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
1080{
1081 char *key = SvPV_nolen ((SV *)name);
1082
1083 /* do what mg_copy normally does */
1084 sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
1085 assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
1086
1087 /* patch sigelem vtbl, but only for __WARN__ and __DIE__ */
1088 if (*key == '_'
1089 && (strEQ (key, "__DIE__")
1090 || strEQ (key, "__WARN__")))
1091 mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
1092
1093 return 1;
1094}
1095
1096/* perl does not have a %SIG vtbl, we provide one so we can override */
1097/* the magic vtbl for the __DIE__ and __WARN__ members */
1098static const MGVTBL coro_sig_vtbl = {
1099 0, 0, 0, 0, 0,
1100 coro_sig_copy
1101};
1102
722/* 1103/*
723 * This overrides the default magic get method of %SIG elements. 1104 * This overrides the default magic get method of %SIG elements.
724 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1105 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
725 * and instead of tryign to save and restore the hash elements, we just provide 1106 * and instead of trying to save and restore the hash elements (extremely slow),
726 * readback here. 1107 * we just provide our own readback here.
727 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
728 * not expecting this to actually change the hook. This is a potential problem
729 * when a schedule happens then, but we ignore this.
730 */ 1108 */
731static int 1109static int ecb_cold
732coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1110coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
733{ 1111{
734 const char *s = MgPV_nolen_const (mg); 1112 const char *s = MgPV_nolen_const (mg);
1113 /* the key must be either __DIE__ or __WARN__ here */
1114 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
735 1115
736 if (*s == '_') 1116 SV *ssv;
737 {
738 SV **svp = 0;
739 1117
740 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
741 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
742
743 if (svp) 1118 if (!*svp)
744 { 1119 ssv = &PL_sv_undef;
745 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1120 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
746 return 0; 1121 ssv = sv_2mortal (newRV_inc (*svp));
747 } 1122 else
748 } 1123 ssv = *svp;
749 1124
750 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1125 sv_setsv (sv, ssv);
1126 return 0;
751} 1127}
752 1128
753static int 1129static int ecb_cold
754coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1130coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
755{ 1131{
756 const char *s = MgPV_nolen_const (mg); 1132 const char *s = MgPV_nolen_const (mg);
1133 /* the key must be either __DIE__ or __WARN__ here */
1134 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
757 1135
758 if (*s == '_')
759 {
760 SV **svp = 0;
761
762 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
763 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
764
765 if (svp)
766 {
767 SV *old = *svp; 1136 SV *old = *svp;
768 *svp = 0; 1137 *svp = 0;
769 SvREFCNT_dec (old); 1138 SvREFCNT_dec (old);
770 return 0; 1139 return 0;
771 }
772 }
773
774 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
775} 1140}
776 1141
777static int 1142static int ecb_cold
778coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1143coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
779{ 1144{
780 const char *s = MgPV_nolen_const (mg); 1145 const char *s = MgPV_nolen_const (mg);
1146 /* the key must be either __DIE__ or __WARN__ here */
1147 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
781 1148
782 if (*s == '_')
783 {
784 SV **svp = 0;
785
786 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
787 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
788
789 if (svp)
790 {
791 SV *old = *svp; 1149 SV *old = *svp;
792 *svp = newSVsv (sv); 1150 *svp = SvOK (sv) ? newSVsv (sv) : 0;
793 SvREFCNT_dec (old); 1151 SvREFCNT_dec (old);
794 return 0; 1152 return 0;
795 }
796 }
797
798 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
799} 1153}
800 1154
801static void 1155static void
802prepare_nop (pTHX_ struct coro_transfer_args *ta) 1156prepare_nop (pTHX_ struct coro_transfer_args *ta)
803{ 1157{
… …
809slf_check_nop (pTHX_ struct CoroSLF *frame) 1163slf_check_nop (pTHX_ struct CoroSLF *frame)
810{ 1164{
811 return 0; 1165 return 0;
812} 1166}
813 1167
814static void 1168static int
1169slf_check_repeat (pTHX_ struct CoroSLF *frame)
1170{
1171 return 1;
1172}
1173
1174/** coroutine stack handling ************************************************/
1175
1176static UNOP init_perl_op;
1177
1178ecb_noinline static void /* noinline to keep it out of the transfer fast path */
815coro_setup (pTHX_ struct coro *coro) 1179init_perl (pTHX_ struct coro *coro)
816{ 1180{
817 /* 1181 /*
818 * emulate part of the perl startup here. 1182 * emulate part of the perl startup here.
819 */ 1183 */
820 coro_init_stacks (aTHX); 1184 coro_init_stacks (aTHX);
821 1185
822 PL_runops = RUNOPS_DEFAULT; 1186 PL_runops = RUNOPS_DEFAULT;
823 PL_curcop = &PL_compiling; 1187 PL_curcop = &PL_compiling;
824 PL_in_eval = EVAL_NULL; 1188 PL_in_eval = EVAL_NULL;
825 PL_comppad = 0; 1189 PL_comppad = 0;
1190 PL_comppad_name = 0;
1191 PL_comppad_name_fill = 0;
1192 PL_comppad_name_floor = 0;
826 PL_curpm = 0; 1193 PL_curpm = 0;
827 PL_curpad = 0; 1194 PL_curpad = 0;
828 PL_localizing = 0; 1195 PL_localizing = 0;
829 PL_dirty = 0;
830 PL_restartop = 0; 1196 PL_restartop = 0;
831#if PERL_VERSION_ATLEAST (5,10,0) 1197#if PERL_VERSION_ATLEAST (5,10,0)
832 PL_parser = 0; 1198 PL_parser = 0;
833#endif 1199#endif
1200 PL_hints = 0;
834 1201
835 /* recreate the die/warn hooks */ 1202 /* recreate the die/warn hooks */
836 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1203 PL_diehook = SvREFCNT_inc (rv_diehook);
837 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1204 PL_warnhook = SvREFCNT_inc (rv_warnhook);
838 1205
839 GvSV (PL_defgv) = newSV (0); 1206 GvSV (PL_defgv) = newSV (0);
840 GvAV (PL_defgv) = coro->args; coro->args = 0; 1207 GvAV (PL_defgv) = coro->args; coro->args = 0;
841 GvSV (PL_errgv) = newSV (0); 1208 GvSV (PL_errgv) = newSV (0);
842 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1209 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1210 GvHV (PL_hintgv) = newHV ();
1211#if PERL_VERSION_ATLEAST (5,10,0)
1212 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1213#endif
843 PL_rs = newSVsv (GvSV (irsgv)); 1214 PL_rs = newSVsv (GvSV (irsgv));
844 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1215 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
845 1216
846 { 1217 {
847 dSP; 1218 dSP;
848 UNOP myop; 1219 UNOP myop;
849 1220
850 Zero (&myop, 1, UNOP); 1221 Zero (&myop, 1, UNOP);
851 myop.op_next = Nullop; 1222 myop.op_next = Nullop;
1223 myop.op_type = OP_ENTERSUB;
852 myop.op_flags = OPf_WANT_VOID; 1224 myop.op_flags = OPf_WANT_VOID;
853 1225
854 PUSHMARK (SP); 1226 PUSHMARK (SP);
855 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1227 PUSHs ((SV *)coro->startcv);
856 PUTBACK; 1228 PUTBACK;
857 PL_op = (OP *)&myop; 1229 PL_op = (OP *)&myop;
858 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1230 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
859 SPAGAIN;
860 } 1231 }
861 1232
862 /* this newly created coroutine might be run on an existing cctx which most 1233 /* this newly created coroutine might be run on an existing cctx which most
863 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1234 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
864 */ 1235 */
865 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1236 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
866 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1237 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
867} 1238 slf_frame.destroy = 0;
868 1239
1240 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1241 init_perl_op.op_next = PL_op;
1242 init_perl_op.op_type = OP_ENTERSUB;
1243 init_perl_op.op_ppaddr = pp_slf;
1244 /* no flags etc. required, as an init function won't be called */
1245
1246 PL_op = (OP *)&init_perl_op;
1247
1248 /* copy throw, in case it was set before init_perl */
1249 CORO_THROW = coro->except;
1250
1251 SWAP_SVS_ENTER (coro);
1252
1253 if (ecb_expect_false (enable_times))
1254 {
1255 coro_times_update ();
1256 coro_times_sub (coro);
1257 }
1258}
1259
869static void 1260static void
870coro_destruct (pTHX_ struct coro *coro) 1261coro_unwind_stacks (pTHX)
871{ 1262{
872 if (!IN_DESTRUCT) 1263 if (!IN_DESTRUCT)
873 { 1264 {
874 /* restore all saved variables and stuff */ 1265 /* restore all saved variables and stuff */
875 LEAVE_SCOPE (0); 1266 LEAVE_SCOPE (0);
… …
883 POPSTACK_TO (PL_mainstack); 1274 POPSTACK_TO (PL_mainstack);
884 1275
885 /* unwind main stack */ 1276 /* unwind main stack */
886 dounwind (-1); 1277 dounwind (-1);
887 } 1278 }
1279}
888 1280
889 SvREFCNT_dec (GvSV (PL_defgv)); 1281static void
890 SvREFCNT_dec (GvAV (PL_defgv)); 1282destroy_perl (pTHX_ struct coro *coro)
891 SvREFCNT_dec (GvSV (PL_errgv)); 1283{
892 SvREFCNT_dec (PL_defoutgv); 1284 SV *svf [9];
893 SvREFCNT_dec (PL_rs);
894 SvREFCNT_dec (GvSV (irsgv));
895 1285
896 SvREFCNT_dec (PL_diehook);
897 SvREFCNT_dec (PL_warnhook);
898 1286 {
1287 SV *old_current = SvRV (coro_current);
1288 struct coro *current = SvSTATE (old_current);
1289
1290 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1291
1292 save_perl (aTHX_ current);
1293
1294 /* this will cause transfer_check to croak on block*/
1295 SvRV_set (coro_current, (SV *)coro->hv);
1296
1297 load_perl (aTHX_ coro);
1298
1299 /* restore swapped sv's */
1300 SWAP_SVS_LEAVE (coro);
1301
1302 coro_unwind_stacks (aTHX);
1303
1304 coro_destruct_stacks (aTHX);
1305
1306 /* now save some sv's to be free'd later */
1307 svf [0] = GvSV (PL_defgv);
1308 svf [1] = (SV *)GvAV (PL_defgv);
1309 svf [2] = GvSV (PL_errgv);
1310 svf [3] = (SV *)PL_defoutgv;
1311 svf [4] = PL_rs;
1312 svf [5] = GvSV (irsgv);
1313 svf [6] = (SV *)GvHV (PL_hintgv);
1314 svf [7] = PL_diehook;
1315 svf [8] = PL_warnhook;
1316 assert (9 == sizeof (svf) / sizeof (*svf));
1317
1318 SvRV_set (coro_current, old_current);
1319
1320 load_perl (aTHX_ current);
1321 }
1322
1323 {
1324 unsigned int i;
1325
1326 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1327 SvREFCNT_dec (svf [i]);
1328
899 SvREFCNT_dec (coro->saved_deffh); 1329 SvREFCNT_dec (coro->saved_deffh);
900 SvREFCNT_dec (coro->throw); 1330 SvREFCNT_dec (coro->rouse_cb);
901 1331 SvREFCNT_dec (coro->invoke_cb);
902 coro_destruct_stacks (aTHX); 1332 SvREFCNT_dec (coro->invoke_av);
1333 SvREFCNT_dec (coro->on_enter_xs);
1334 SvREFCNT_dec (coro->on_leave_xs);
1335 }
903} 1336}
904 1337
905INLINE void 1338ecb_inline void
906free_coro_mortal (pTHX) 1339free_coro_mortal (pTHX)
907{ 1340{
908 if (expect_true (coro_mortal)) 1341 if (ecb_expect_true (coro_mortal))
909 { 1342 {
910 SvREFCNT_dec (coro_mortal); 1343 SvREFCNT_dec ((SV *)coro_mortal);
911 coro_mortal = 0; 1344 coro_mortal = 0;
912 } 1345 }
913} 1346}
914 1347
915static int 1348static int
916runops_trace (pTHX) 1349runops_trace (pTHX)
917{ 1350{
918 COP *oldcop = 0; 1351 COP *oldcop = 0;
919 int oldcxix = -2; 1352 int oldcxix = -2;
920 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
921 coro_cctx *cctx = coro->cctx;
922 1353
923 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1354 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
924 { 1355 {
925 PERL_ASYNC_CHECK (); 1356 PERL_ASYNC_CHECK ();
926 1357
927 if (cctx->flags & CC_TRACE_ALL) 1358 if (cctx_current->flags & CC_TRACE_ALL)
928 { 1359 {
929 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1360 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
930 { 1361 {
931 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1362 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
932 SV **bot, **top; 1363 SV **bot, **top;
933 AV *av = newAV (); /* return values */ 1364 AV *av = newAV (); /* return values */
934 SV **cb; 1365 SV **cb;
… …
971 1402
972 if (PL_curcop != &PL_compiling) 1403 if (PL_curcop != &PL_compiling)
973 { 1404 {
974 SV **cb; 1405 SV **cb;
975 1406
976 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1407 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
977 { 1408 {
978 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1409 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
979 1410
980 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1411 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
981 { 1412 {
982 runops_proc_t old_runops = PL_runops;
983 dSP; 1413 dSP;
984 GV *gv = CvGV (cx->blk_sub.cv); 1414 GV *gv = CvGV (cx->blk_sub.cv);
985 SV *fullname = sv_2mortal (newSV (0)); 1415 SV *fullname = sv_2mortal (newSV (0));
986 1416
987 if (isGV (gv)) 1417 if (isGV (gv))
… …
992 SAVETMPS; 1422 SAVETMPS;
993 EXTEND (SP, 3); 1423 EXTEND (SP, 3);
994 PUSHMARK (SP); 1424 PUSHMARK (SP);
995 PUSHs (&PL_sv_yes); 1425 PUSHs (&PL_sv_yes);
996 PUSHs (fullname); 1426 PUSHs (fullname);
997 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1427 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc (SUB_ARGARRAY)) : &PL_sv_undef);
998 PUTBACK; 1428 PUTBACK;
999 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1429 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1000 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1430 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1001 SPAGAIN; 1431 SPAGAIN;
1002 FREETMPS; 1432 FREETMPS;
… …
1005 } 1435 }
1006 1436
1007 oldcxix = cxstack_ix; 1437 oldcxix = cxstack_ix;
1008 } 1438 }
1009 1439
1010 if (cctx->flags & CC_TRACE_LINE) 1440 if (cctx_current->flags & CC_TRACE_LINE)
1011 { 1441 {
1012 dSP; 1442 dSP;
1013 1443
1014 PL_runops = RUNOPS_DEFAULT; 1444 PL_runops = RUNOPS_DEFAULT;
1015 ENTER; 1445 ENTER;
… …
1034 1464
1035 TAINT_NOT; 1465 TAINT_NOT;
1036 return 0; 1466 return 0;
1037} 1467}
1038 1468
1469static struct CoroSLF cctx_ssl_frame;
1470
1039static void 1471static void
1040prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1472slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1041{ 1473{
1042 ta->prev = (struct coro *)cctx;
1043 ta->next = 0; 1474 ta->prev = 0;
1044} 1475}
1045 1476
1046/* inject a fake call to Coro::State::_cctx_init into the execution */ 1477static int
1047/* _cctx_init should be careful, as it could be called at almost any time */ 1478slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1048/* during execution of a perl program */
1049/* also initialises PL_top_env */
1050static void NOINLINE
1051cctx_prepare (pTHX_ coro_cctx *cctx)
1052{ 1479{
1053 dSP; 1480 *frame = cctx_ssl_frame;
1054 UNOP myop;
1055 1481
1482 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1483}
1484
1485/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1486static void ecb_noinline
1487cctx_prepare (pTHX)
1488{
1056 PL_top_env = &PL_start_env; 1489 PL_top_env = &PL_start_env;
1057 1490
1058 if (cctx->flags & CC_TRACE) 1491 if (cctx_current->flags & CC_TRACE)
1059 PL_runops = runops_trace; 1492 PL_runops = runops_trace;
1060 1493
1061 Zero (&myop, 1, UNOP); 1494 /* we already must be executing an SLF op, there is no other valid way
1062 myop.op_next = PL_op; 1495 * that can lead to creation of a new cctx */
1063 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1496 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1497 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1064 1498
1065 PUSHMARK (SP); 1499 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1066 EXTEND (SP, 2); 1500 cctx_ssl_frame = slf_frame;
1067 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1501
1068 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1502 slf_frame.prepare = slf_prepare_set_stacklevel;
1069 PUTBACK; 1503 slf_frame.check = slf_check_set_stacklevel;
1070 PL_op = (OP *)&myop;
1071 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1072 SPAGAIN;
1073} 1504}
1074 1505
1075/* the tail of transfer: execute stuff we can only do after a transfer */ 1506/* the tail of transfer: execute stuff we can only do after a transfer */
1076INLINE void 1507ecb_inline void
1077transfer_tail (pTHX) 1508transfer_tail (pTHX)
1078{ 1509{
1079 struct coro *next = (struct coro *)transfer_next;
1080 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1081 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1082
1083 free_coro_mortal (aTHX); 1510 free_coro_mortal (aTHX);
1511}
1084 1512
1085 if (expect_false (next->throw)) 1513/* try to exit the same way perl's main function would do */
1086 { 1514/* we do not bother resetting the environment or other things *7
1087 SV *exception = sv_2mortal (next->throw); 1515/* that are not, uhm, essential */
1088 1516/* this obviously also doesn't work when perl is embedded */
1089 next->throw = 0; 1517static void ecb_noinline ecb_cold
1090 sv_setsv (ERRSV, exception); 1518perlish_exit (pTHX)
1091 croak (0); 1519{
1092 } 1520 int exitstatus = perl_destruct (PL_curinterp);
1521 perl_free (PL_curinterp);
1522 exit (exitstatus);
1093} 1523}
1094 1524
1095/* 1525/*
1096 * this is a _very_ stripped down perl interpreter ;) 1526 * this is a _very_ stripped down perl interpreter ;)
1097 */ 1527 */
… …
1109 /* normally we would need to skip the entersub here */ 1539 /* normally we would need to skip the entersub here */
1110 /* not doing so will re-execute it, which is exactly what we want */ 1540 /* not doing so will re-execute it, which is exactly what we want */
1111 /* PL_nop = PL_nop->op_next */ 1541 /* PL_nop = PL_nop->op_next */
1112 1542
1113 /* inject a fake subroutine call to cctx_init */ 1543 /* inject a fake subroutine call to cctx_init */
1114 cctx_prepare (aTHX_ (coro_cctx *)arg); 1544 cctx_prepare (aTHX);
1115 1545
1116 /* cctx_run is the alternative tail of transfer() */ 1546 /* cctx_run is the alternative tail of transfer() */
1117 /* TODO: throwing an exception here might be deadly, VERIFY */
1118 transfer_tail (aTHX); 1547 transfer_tail (aTHX);
1119 1548
1120 /* somebody or something will hit me for both perl_run and PL_restartop */ 1549 /* somebody or something will hit me for both perl_run and PL_restartop */
1121 PL_restartop = PL_op; 1550 PL_restartop = PL_op;
1122 perl_run (PL_curinterp); 1551 perl_run (PL_curinterp);
1552 /*
1553 * Unfortunately, there is no way to get at the return values of the
1554 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1555 * runtime errors here, as this is just a random interpreter, not a thread.
1556 */
1557
1558 /*
1559 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1560 * requires PL_scopestack_ix, so do it here if required.
1561 */
1562 if (!PL_scopestack_ix)
1563 ENTER;
1123 1564
1124 /* 1565 /*
1125 * If perl-run returns we assume exit() was being called or the coro 1566 * If perl-run returns we assume exit() was being called or the coro
1126 * fell off the end, which seems to be the only valid (non-bug) 1567 * fell off the end, which seems to be the only valid (non-bug)
1127 * reason for perl_run to return. We try to exit by jumping to the 1568 * reason for perl_run to return. We try to mimic whatever perl is normally
1128 * bootstrap-time "top" top_env, as we cannot restore the "main" 1569 * doing in that case. YMMV.
1129 * coroutine as Coro has no such concept
1130 */ 1570 */
1131 PL_top_env = main_top_env; 1571 perlish_exit (aTHX);
1132 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1133 } 1572 }
1134} 1573}
1135 1574
1136static coro_cctx * 1575static coro_cctx *
1137cctx_new () 1576cctx_new (void)
1138{ 1577{
1139 coro_cctx *cctx; 1578 coro_cctx *cctx;
1140 1579
1141 ++cctx_count; 1580 ++cctx_count;
1142 New (0, cctx, 1, coro_cctx); 1581 New (0, cctx, 1, coro_cctx);
… …
1148 return cctx; 1587 return cctx;
1149} 1588}
1150 1589
1151/* create a new cctx only suitable as source */ 1590/* create a new cctx only suitable as source */
1152static coro_cctx * 1591static coro_cctx *
1153cctx_new_empty () 1592cctx_new_empty (void)
1154{ 1593{
1155 coro_cctx *cctx = cctx_new (); 1594 coro_cctx *cctx = cctx_new ();
1156 1595
1157 cctx->sptr = 0; 1596 cctx->stack.sptr = 0;
1158 coro_create (&cctx->cctx, 0, 0, 0, 0); 1597 coro_create (&cctx->cctx, 0, 0, 0, 0);
1159 1598
1160 return cctx; 1599 return cctx;
1161} 1600}
1162 1601
1163/* create a new cctx suitable as destination/running a perl interpreter */ 1602/* create a new cctx suitable as destination/running a perl interpreter */
1164static coro_cctx * 1603static coro_cctx *
1165cctx_new_run () 1604cctx_new_run (void)
1166{ 1605{
1167 coro_cctx *cctx = cctx_new (); 1606 coro_cctx *cctx = cctx_new ();
1168 void *stack_start;
1169 size_t stack_size;
1170 1607
1171#if HAVE_MMAP 1608 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1172 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1173 /* mmap supposedly does allocate-on-write for us */
1174 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1175
1176 if (cctx->sptr != (void *)-1)
1177 {
1178 #if CORO_STACKGUARD
1179 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1180 #endif
1181 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1182 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1183 cctx->flags |= CC_MAPPED;
1184 } 1609 {
1185 else
1186#endif
1187 {
1188 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1189 New (0, cctx->sptr, cctx_stacksize, long);
1190
1191 if (!cctx->sptr)
1192 {
1193 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1610 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1194 _exit (EXIT_FAILURE); 1611 _exit (EXIT_FAILURE);
1195 }
1196
1197 stack_start = cctx->sptr;
1198 stack_size = cctx->ssize;
1199 } 1612 }
1200 1613
1201 #if CORO_USE_VALGRIND
1202 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1203 #endif
1204
1205 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1614 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1206 1615
1207 return cctx; 1616 return cctx;
1208} 1617}
1209 1618
1210static void 1619static void
1211cctx_destroy (coro_cctx *cctx) 1620cctx_destroy (coro_cctx *cctx)
1212{ 1621{
1213 if (!cctx) 1622 if (!cctx)
1214 return; 1623 return;
1215 1624
1625 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1626
1216 --cctx_count; 1627 --cctx_count;
1217 coro_destroy (&cctx->cctx); 1628 coro_destroy (&cctx->cctx);
1218 1629
1219 /* coro_transfer creates new, empty cctx's */ 1630 coro_stack_free (&cctx->stack);
1220 if (cctx->sptr)
1221 {
1222 #if CORO_USE_VALGRIND
1223 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1224 #endif
1225
1226#if HAVE_MMAP
1227 if (cctx->flags & CC_MAPPED)
1228 munmap (cctx->sptr, cctx->ssize);
1229 else
1230#endif
1231 Safefree (cctx->sptr);
1232 }
1233 1631
1234 Safefree (cctx); 1632 Safefree (cctx);
1235} 1633}
1236 1634
1237/* wether this cctx should be destructed */ 1635/* wether this cctx should be destructed */
1238#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1636#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1239 1637
1240static coro_cctx * 1638static coro_cctx *
1241cctx_get (pTHX) 1639cctx_get (pTHX)
1242{ 1640{
1243 while (expect_true (cctx_first)) 1641 while (ecb_expect_true (cctx_first))
1244 { 1642 {
1245 coro_cctx *cctx = cctx_first; 1643 coro_cctx *cctx = cctx_first;
1246 cctx_first = cctx->next; 1644 cctx_first = cctx->next;
1247 --cctx_idle; 1645 --cctx_idle;
1248 1646
1249 if (expect_true (!CCTX_EXPIRED (cctx))) 1647 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1250 return cctx; 1648 return cctx;
1251 1649
1252 cctx_destroy (cctx); 1650 cctx_destroy (cctx);
1253 } 1651 }
1254 1652
… …
1256} 1654}
1257 1655
1258static void 1656static void
1259cctx_put (coro_cctx *cctx) 1657cctx_put (coro_cctx *cctx)
1260{ 1658{
1261 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1659 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1262 1660
1263 /* free another cctx if overlimit */ 1661 /* free another cctx if overlimit */
1264 if (expect_false (cctx_idle >= cctx_max_idle)) 1662 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1265 { 1663 {
1266 coro_cctx *first = cctx_first; 1664 coro_cctx *first = cctx_first;
1267 cctx_first = first->next; 1665 cctx_first = first->next;
1268 --cctx_idle; 1666 --cctx_idle;
1269 1667
… …
1278/** coroutine switching *****************************************************/ 1676/** coroutine switching *****************************************************/
1279 1677
1280static void 1678static void
1281transfer_check (pTHX_ struct coro *prev, struct coro *next) 1679transfer_check (pTHX_ struct coro *prev, struct coro *next)
1282{ 1680{
1681 /* TODO: throwing up here is considered harmful */
1682
1283 if (expect_true (prev != next)) 1683 if (ecb_expect_true (prev != next))
1284 { 1684 {
1285 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1685 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1286 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1686 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1287 1687
1288 if (expect_false (next->flags & CF_RUNNING)) 1688 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1289 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1290
1291 if (expect_false (next->flags & CF_DESTROYED))
1292 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1689 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1293 1690
1294#if !PERL_VERSION_ATLEAST (5,10,0) 1691#if !PERL_VERSION_ATLEAST (5,10,0)
1295 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1692 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1296 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1693 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1297#endif 1694#endif
1298 } 1695 }
1299} 1696}
1300 1697
1301/* always use the TRANSFER macro */ 1698/* always use the TRANSFER macro */
1302static void NOINLINE 1699static void ecb_noinline /* noinline so we have a fixed stackframe */
1303transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1700transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1304{ 1701{
1305 dSTACKLEVEL; 1702 dSTACKLEVEL;
1306 1703
1307 /* sometimes transfer is only called to set idle_sp */ 1704 /* sometimes transfer is only called to set idle_sp */
1308 if (expect_false (!next)) 1705 if (ecb_expect_false (!prev))
1309 { 1706 {
1310 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1707 cctx_current->idle_sp = STACKLEVEL;
1311 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1708 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1312 } 1709 }
1313 else if (expect_true (prev != next)) 1710 else if (ecb_expect_true (prev != next))
1314 { 1711 {
1315 coro_cctx *prev__cctx; 1712 coro_cctx *cctx_prev;
1316 1713
1317 if (expect_false (prev->flags & CF_NEW)) 1714 if (ecb_expect_false (prev->flags & CF_NEW))
1318 { 1715 {
1319 /* create a new empty/source context */ 1716 /* create a new empty/source context */
1320 prev->cctx = cctx_new_empty ();
1321 prev->flags &= ~CF_NEW; 1717 prev->flags &= ~CF_NEW;
1322 prev->flags |= CF_RUNNING; 1718 prev->flags |= CF_RUNNING;
1323 } 1719 }
1324 1720
1325 prev->flags &= ~CF_RUNNING; 1721 prev->flags &= ~CF_RUNNING;
1326 next->flags |= CF_RUNNING; 1722 next->flags |= CF_RUNNING;
1327 1723
1328 /* first get rid of the old state */ 1724 /* first get rid of the old state */
1329 save_perl (aTHX_ prev); 1725 save_perl (aTHX_ prev);
1330 1726
1331 if (expect_false (next->flags & CF_NEW)) 1727 if (ecb_expect_false (next->flags & CF_NEW))
1332 { 1728 {
1333 /* need to start coroutine */ 1729 /* need to start coroutine */
1334 next->flags &= ~CF_NEW; 1730 next->flags &= ~CF_NEW;
1335 /* setup coroutine call */ 1731 /* setup coroutine call */
1336 coro_setup (aTHX_ next); 1732 init_perl (aTHX_ next);
1337 } 1733 }
1338 else 1734 else
1339 load_perl (aTHX_ next); 1735 load_perl (aTHX_ next);
1340 1736
1341 prev__cctx = prev->cctx;
1342
1343 /* possibly untie and reuse the cctx */ 1737 /* possibly untie and reuse the cctx */
1344 if (expect_true ( 1738 if (ecb_expect_true (
1345 prev__cctx->idle_sp == (void *)stacklevel 1739 cctx_current->idle_sp == STACKLEVEL
1346 && !(prev__cctx->flags & CC_TRACE) 1740 && !(cctx_current->flags & CC_TRACE)
1347 && !force_cctx 1741 && !force_cctx
1348 )) 1742 ))
1349 { 1743 {
1350 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1744 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1351 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1745 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1352 1746
1353 prev->cctx = 0;
1354
1355 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1747 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1356 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1748 /* without this the next cctx_get might destroy the running cctx while still in use */
1357 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1749 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1358 if (!next->cctx) 1750 if (ecb_expect_true (!next->cctx))
1359 next->cctx = cctx_get (aTHX); 1751 next->cctx = cctx_get (aTHX);
1360 1752
1361 cctx_put (prev__cctx); 1753 cctx_put (cctx_current);
1362 } 1754 }
1755 else
1756 prev->cctx = cctx_current;
1363 1757
1364 ++next->usecount; 1758 ++next->usecount;
1365 1759
1366 if (expect_true (!next->cctx)) 1760 cctx_prev = cctx_current;
1367 next->cctx = cctx_get (aTHX); 1761 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1368 1762
1369 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1763 next->cctx = 0;
1370 transfer_next = next;
1371 1764
1372 if (expect_false (prev__cctx != next->cctx)) 1765 if (ecb_expect_false (cctx_prev != cctx_current))
1373 { 1766 {
1374 prev__cctx->top_env = PL_top_env; 1767 cctx_prev->top_env = PL_top_env;
1375 PL_top_env = next->cctx->top_env; 1768 PL_top_env = cctx_current->top_env;
1376 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1769 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1377 } 1770 }
1378 1771
1379 transfer_tail (aTHX); 1772 transfer_tail (aTHX);
1380 } 1773 }
1381} 1774}
… …
1383#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1776#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1384#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1777#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1385 1778
1386/** high level stuff ********************************************************/ 1779/** high level stuff ********************************************************/
1387 1780
1781/* this function is actually Coro, not Coro::State, but we call it from here */
1782/* because it is convenient - but it hasn't been declared yet for that reason */
1388static int 1783static void
1784coro_call_on_destroy (pTHX_ struct coro *coro);
1785
1786static void
1389coro_state_destroy (pTHX_ struct coro *coro) 1787coro_state_destroy (pTHX_ struct coro *coro)
1390{ 1788{
1391 if (coro->flags & CF_DESTROYED) 1789 if (coro->flags & CF_ZOMBIE)
1392 return 0; 1790 return;
1393 1791
1394 if (coro->on_destroy)
1395 coro->on_destroy (aTHX_ coro); 1792 slf_destroy (aTHX_ coro);
1396 1793
1397 coro->flags |= CF_DESTROYED; 1794 coro->flags |= CF_ZOMBIE;
1398 1795
1399 if (coro->flags & CF_READY) 1796 if (coro->flags & CF_READY)
1400 { 1797 {
1401 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1798 /* reduce nready, as destroying a ready coro effectively unreadies it */
1402 /* alternative: look through all ready queues and remove the coro */ 1799 /* alternative: look through all ready queues and remove the coro */
1403 --coro_nready; 1800 --coro_nready;
1404 } 1801 }
1405 else 1802 else
1406 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1803 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1407 1804
1408 if (coro->mainstack && coro->mainstack != main_mainstack)
1409 {
1410 struct coro temp;
1411
1412 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1413
1414 save_perl (aTHX_ &temp);
1415 load_perl (aTHX_ coro);
1416
1417 coro_destruct (aTHX_ coro);
1418
1419 load_perl (aTHX_ &temp);
1420
1421 coro->slot = 0;
1422 }
1423
1424 cctx_destroy (coro->cctx);
1425 SvREFCNT_dec (coro->args);
1426
1427 if (coro->next) coro->next->prev = coro->prev; 1805 if (coro->next) coro->next->prev = coro->prev;
1428 if (coro->prev) coro->prev->next = coro->next; 1806 if (coro->prev) coro->prev->next = coro->next;
1429 if (coro == coro_first) coro_first = coro->next; 1807 if (coro == coro_first) coro_first = coro->next;
1430 1808
1431 return 1; 1809 if (coro->mainstack
1810 && coro->mainstack != main_mainstack
1811 && coro->slot
1812 && !PL_dirty)
1813 destroy_perl (aTHX_ coro);
1814
1815 cctx_destroy (coro->cctx);
1816 SvREFCNT_dec (coro->startcv);
1817 SvREFCNT_dec (coro->args);
1818 SvREFCNT_dec (coro->swap_sv);
1819 SvREFCNT_dec (CORO_THROW);
1820
1821 coro_call_on_destroy (aTHX_ coro);
1822
1823 /* more destruction mayhem in coro_state_free */
1432} 1824}
1433 1825
1434static int 1826static int
1435coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1827coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1436{ 1828{
1437 struct coro *coro = (struct coro *)mg->mg_ptr; 1829 struct coro *coro = (struct coro *)mg->mg_ptr;
1438 mg->mg_ptr = 0; 1830 mg->mg_ptr = 0;
1439 1831
1440 coro->hv = 0;
1441
1442 if (--coro->refcnt < 0)
1443 {
1444 coro_state_destroy (aTHX_ coro); 1832 coro_state_destroy (aTHX_ coro);
1833 SvREFCNT_dec (coro->on_destroy);
1834 SvREFCNT_dec (coro->status);
1835
1445 Safefree (coro); 1836 Safefree (coro);
1446 }
1447 1837
1448 return 0; 1838 return 0;
1449} 1839}
1450 1840
1451static int 1841static int ecb_cold
1452coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1842coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1453{ 1843{
1454 struct coro *coro = (struct coro *)mg->mg_ptr; 1844 /* called when perl clones the current process the slow way (windows process emulation) */
1455 1845 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1456 ++coro->refcnt; 1846 mg->mg_ptr = 0;
1847 mg->mg_virtual = 0;
1457 1848
1458 return 0; 1849 return 0;
1459} 1850}
1460 1851
1461static MGVTBL coro_state_vtbl = { 1852static MGVTBL coro_state_vtbl = {
… …
1486 TRANSFER (ta, 1); 1877 TRANSFER (ta, 1);
1487} 1878}
1488 1879
1489/** Coro ********************************************************************/ 1880/** Coro ********************************************************************/
1490 1881
1491static void 1882ecb_inline void
1492coro_enq (pTHX_ SV *coro_sv) 1883coro_enq (pTHX_ struct coro *coro)
1493{ 1884{
1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1885 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1495}
1496 1886
1497static SV * 1887 SvREFCNT_inc_NN (coro->hv);
1888
1889 coro->next_ready = 0;
1890 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1891 ready [1] = coro;
1892}
1893
1894ecb_inline struct coro *
1498coro_deq (pTHX) 1895coro_deq (pTHX)
1499{ 1896{
1500 int prio; 1897 int prio;
1501 1898
1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1899 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1503 if (AvFILLp (coro_ready [prio]) >= 0) 1900 {
1504 return av_shift (coro_ready [prio]); 1901 struct coro **ready = coro_ready [prio];
1902
1903 if (ready [0])
1904 {
1905 struct coro *coro = ready [0];
1906 ready [0] = coro->next_ready;
1907 return coro;
1908 }
1909 }
1505 1910
1506 return 0; 1911 return 0;
1912}
1913
1914static void
1915invoke_sv_ready_hook_helper (void)
1916{
1917 dTHX;
1918 dSP;
1919
1920 ENTER;
1921 SAVETMPS;
1922
1923 PUSHMARK (SP);
1924 PUTBACK;
1925 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1926
1927 FREETMPS;
1928 LEAVE;
1507} 1929}
1508 1930
1509static int 1931static int
1510api_ready (pTHX_ SV *coro_sv) 1932api_ready (pTHX_ SV *coro_sv)
1511{ 1933{
1512 struct coro *coro;
1513 SV *sv_hook;
1514 void (*xs_hook)(void);
1515
1516 if (SvROK (coro_sv))
1517 coro_sv = SvRV (coro_sv);
1518
1519 coro = SvSTATE (coro_sv); 1934 struct coro *coro = SvSTATE (coro_sv);
1520 1935
1521 if (coro->flags & CF_READY) 1936 if (coro->flags & CF_READY)
1522 return 0; 1937 return 0;
1523 1938
1524 coro->flags |= CF_READY; 1939 coro->flags |= CF_READY;
1525 1940
1526 sv_hook = coro_nready ? 0 : coro_readyhook; 1941 coro_enq (aTHX_ coro);
1527 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1528 1942
1529 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1943 if (!coro_nready++)
1530 ++coro_nready; 1944 if (coroapi.readyhook)
1531 1945 coroapi.readyhook ();
1532 if (sv_hook)
1533 {
1534 dSP;
1535
1536 ENTER;
1537 SAVETMPS;
1538
1539 PUSHMARK (SP);
1540 PUTBACK;
1541 call_sv (sv_hook, G_DISCARD);
1542 SPAGAIN;
1543
1544 FREETMPS;
1545 LEAVE;
1546 }
1547
1548 if (xs_hook)
1549 xs_hook ();
1550 1946
1551 return 1; 1947 return 1;
1552} 1948}
1553 1949
1554static int 1950static int
1555api_is_ready (pTHX_ SV *coro_sv) 1951api_is_ready (pTHX_ SV *coro_sv)
1556{ 1952{
1557 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1953 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1558} 1954}
1559 1955
1560INLINE void 1956/* expects to own a reference to next->hv */
1957ecb_inline void
1561prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1958prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1562{ 1959{
1563 SV *prev_sv, *next_sv;
1564
1565 for (;;)
1566 {
1567 next_sv = coro_deq (aTHX);
1568
1569 /* nothing to schedule: call the idle handler */
1570 if (expect_false (!next_sv))
1571 {
1572 dSP;
1573
1574 ENTER;
1575 SAVETMPS;
1576
1577 PUSHMARK (SP);
1578 PUTBACK;
1579 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1580 SPAGAIN;
1581
1582 FREETMPS;
1583 LEAVE;
1584 continue;
1585 }
1586
1587 ta->next = SvSTATE (next_sv);
1588
1589 /* cannot transfer to destroyed coros, skip and look for next */
1590 if (expect_false (ta->next->flags & CF_DESTROYED))
1591 {
1592 SvREFCNT_dec (next_sv);
1593 /* coro_nready has already been taken care of by destroy */
1594 continue;
1595 }
1596
1597 --coro_nready;
1598 break;
1599 }
1600
1601 /* free this only after the transfer */
1602 prev_sv = SvRV (coro_current); 1960 SV *prev_sv = SvRV (coro_current);
1961
1603 ta->prev = SvSTATE (prev_sv); 1962 ta->prev = SvSTATE_hv (prev_sv);
1963 ta->next = next;
1964
1604 TRANSFER_CHECK (*ta); 1965 TRANSFER_CHECK (*ta);
1605 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1966
1606 ta->next->flags &= ~CF_READY;
1607 SvRV_set (coro_current, next_sv); 1967 SvRV_set (coro_current, (SV *)next->hv);
1608 1968
1609 free_coro_mortal (aTHX); 1969 free_coro_mortal (aTHX);
1610 coro_mortal = prev_sv; 1970 coro_mortal = prev_sv;
1611} 1971}
1612 1972
1613INLINE void 1973static void
1974prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1975{
1976 for (;;)
1977 {
1978 struct coro *next = coro_deq (aTHX);
1979
1980 if (ecb_expect_true (next))
1981 {
1982 /* cannot transfer to destroyed coros, skip and look for next */
1983 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1984 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1985 else
1986 {
1987 next->flags &= ~CF_READY;
1988 --coro_nready;
1989
1990 prepare_schedule_to (aTHX_ ta, next);
1991 break;
1992 }
1993 }
1994 else
1995 {
1996 /* nothing to schedule: call the idle handler */
1997 if (SvROK (sv_idle)
1998 && SvOBJECT (SvRV (sv_idle)))
1999 {
2000 if (SvRV (sv_idle) == SvRV (coro_current))
2001 {
2002 require_pv ("Carp");
2003
2004 {
2005 dSP;
2006
2007 ENTER;
2008 SAVETMPS;
2009
2010 PUSHMARK (SP);
2011 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2012 PUTBACK;
2013 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2014
2015 FREETMPS;
2016 LEAVE;
2017 }
2018 }
2019
2020 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
2021 api_ready (aTHX_ SvRV (sv_idle));
2022 --coro_nready;
2023 }
2024 else
2025 {
2026 /* TODO: deprecated, remove, cannot work reliably *//*D*/
2027 dSP;
2028
2029 ENTER;
2030 SAVETMPS;
2031
2032 PUSHMARK (SP);
2033 PUTBACK;
2034 call_sv (sv_idle, G_VOID | G_DISCARD);
2035
2036 FREETMPS;
2037 LEAVE;
2038 }
2039 }
2040 }
2041}
2042
2043ecb_inline void
1614prepare_cede (pTHX_ struct coro_transfer_args *ta) 2044prepare_cede (pTHX_ struct coro_transfer_args *ta)
1615{ 2045{
1616 api_ready (aTHX_ coro_current); 2046 api_ready (aTHX_ coro_current);
1617 prepare_schedule (aTHX_ ta); 2047 prepare_schedule (aTHX_ ta);
1618} 2048}
1619 2049
1620INLINE void 2050ecb_inline void
1621prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2051prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1622{ 2052{
1623 SV *prev = SvRV (coro_current); 2053 SV *prev = SvRV (coro_current);
1624 2054
1625 if (coro_nready) 2055 if (coro_nready)
… …
1638 2068
1639 prepare_schedule (aTHX_ &ta); 2069 prepare_schedule (aTHX_ &ta);
1640 TRANSFER (ta, 1); 2070 TRANSFER (ta, 1);
1641} 2071}
1642 2072
2073static void
2074api_schedule_to (pTHX_ SV *coro_sv)
2075{
2076 struct coro_transfer_args ta;
2077 struct coro *next = SvSTATE (coro_sv);
2078
2079 SvREFCNT_inc_NN (coro_sv);
2080 prepare_schedule_to (aTHX_ &ta, next);
2081}
2082
1643static int 2083static int
1644api_cede (pTHX) 2084api_cede (pTHX)
1645{ 2085{
1646 struct coro_transfer_args ta; 2086 struct coro_transfer_args ta;
1647 2087
1648 prepare_cede (aTHX_ &ta); 2088 prepare_cede (aTHX_ &ta);
1649 2089
1650 if (expect_true (ta.prev != ta.next)) 2090 if (ecb_expect_true (ta.prev != ta.next))
1651 { 2091 {
1652 TRANSFER (ta, 1); 2092 TRANSFER (ta, 1);
1653 return 1; 2093 return 1;
1654 } 2094 }
1655 else 2095 else
… …
1674static void 2114static void
1675api_trace (pTHX_ SV *coro_sv, int flags) 2115api_trace (pTHX_ SV *coro_sv, int flags)
1676{ 2116{
1677 struct coro *coro = SvSTATE (coro_sv); 2117 struct coro *coro = SvSTATE (coro_sv);
1678 2118
2119 if (coro->flags & CF_RUNNING)
2120 croak ("cannot enable tracing on a running coroutine, caught");
2121
1679 if (flags & CC_TRACE) 2122 if (flags & CC_TRACE)
1680 { 2123 {
1681 if (!coro->cctx) 2124 if (!coro->cctx)
1682 coro->cctx = cctx_new_run (); 2125 coro->cctx = cctx_new_run ();
1683 else if (!(coro->cctx->flags & CC_TRACE)) 2126 else if (!(coro->cctx->flags & CC_TRACE))
1684 croak ("cannot enable tracing on coroutine with custom stack,"); 2127 croak ("cannot enable tracing on coroutine with custom stack, caught");
1685 2128
1686 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2129 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1687 } 2130 }
1688 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2131 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1689 { 2132 {
… …
1694 else 2137 else
1695 coro->slot->runops = RUNOPS_DEFAULT; 2138 coro->slot->runops = RUNOPS_DEFAULT;
1696 } 2139 }
1697} 2140}
1698 2141
2142static void
2143coro_push_av (pTHX_ AV *av, I32 gimme_v)
2144{
2145 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2146 {
2147 dSP;
2148
2149 if (gimme_v == G_SCALAR)
2150 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2151 else
2152 {
2153 int i;
2154 EXTEND (SP, AvFILLp (av) + 1);
2155
2156 for (i = 0; i <= AvFILLp (av); ++i)
2157 PUSHs (AvARRAY (av)[i]);
2158 }
2159
2160 PUTBACK;
2161 }
2162}
2163
2164static void
2165coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2166{
2167 if (!coro->on_destroy)
2168 coro->on_destroy = newAV ();
2169
2170 av_push (coro->on_destroy, cb);
2171}
2172
2173static void
2174slf_destroy_join (pTHX_ struct CoroSLF *frame)
2175{
2176 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2177}
2178
2179static int
2180slf_check_join (pTHX_ struct CoroSLF *frame)
2181{
2182 struct coro *coro = (struct coro *)frame->data;
2183
2184 if (!coro->status)
2185 return 1;
2186
2187 frame->destroy = 0;
2188
2189 coro_push_av (aTHX_ coro->status, GIMME_V);
2190
2191 SvREFCNT_dec ((SV *)coro->hv);
2192
2193 return 0;
2194}
2195
2196static void
2197slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2198{
2199 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2200
2201 if (items > 1)
2202 croak ("join called with too many arguments");
2203
2204 if (coro->status)
2205 frame->prepare = prepare_nop;
2206 else
2207 {
2208 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2209 frame->prepare = prepare_schedule;
2210 }
2211
2212 frame->check = slf_check_join;
2213 frame->destroy = slf_destroy_join;
2214 frame->data = (void *)coro;
2215 SvREFCNT_inc (coro->hv);
2216}
2217
2218static void
2219coro_call_on_destroy (pTHX_ struct coro *coro)
2220{
2221 AV *od = coro->on_destroy;
2222
2223 if (!od)
2224 return;
2225
2226 coro->on_destroy = 0;
2227 sv_2mortal ((SV *)od);
2228
2229 while (AvFILLp (od) >= 0)
2230 {
2231 SV *cb = sv_2mortal (av_pop (od));
2232
2233 /* coro hv's (and only hv's at the moment) are supported as well */
2234 if (SvSTATEhv_p (aTHX_ cb))
2235 api_ready (aTHX_ cb);
2236 else
2237 {
2238 dSP; /* don't disturb outer sp */
2239 PUSHMARK (SP);
2240
2241 if (coro->status)
2242 {
2243 PUTBACK;
2244 coro_push_av (aTHX_ coro->status, G_ARRAY);
2245 SPAGAIN;
2246 }
2247
2248 PUTBACK;
2249 call_sv (cb, G_VOID | G_DISCARD);
2250 }
2251 }
2252}
2253
2254static void
2255coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2256{
2257 AV *av;
2258
2259 if (coro->status)
2260 {
2261 av = coro->status;
2262 av_clear (av);
2263 }
2264 else
2265 av = coro->status = newAV ();
2266
2267 /* items are actually not so common, so optimise for this case */
2268 if (items)
2269 {
2270 int i;
2271
2272 av_extend (av, items - 1);
2273
2274 for (i = 0; i < items; ++i)
2275 av_push (av, SvREFCNT_inc_NN (arg [i]));
2276 }
2277}
2278
2279static void
2280slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2281{
2282 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2283 api_ready (aTHX_ sv_manager);
2284
2285 frame->prepare = prepare_schedule;
2286 frame->check = slf_check_repeat;
2287
2288 /* as a minor optimisation, we could unwind all stacks here */
2289 /* but that puts extra pressure on pp_slf, and is not worth much */
2290 /*coro_unwind_stacks (aTHX);*/
2291}
2292
2293static void
2294slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2295{
2296 HV *coro_hv = (HV *)SvRV (coro_current);
2297
2298 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2299 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2300}
2301
2302static void
2303slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2304{
2305 HV *coro_hv;
2306 struct coro *coro;
2307
2308 if (items <= 0)
2309 croak ("Coro::cancel called without coro object,");
2310
2311 coro = SvSTATE (arg [0]);
2312 coro_hv = coro->hv;
2313
2314 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2315
2316 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2317 {
2318 /* coro currently busy cancelling something, so just notify it */
2319 coro->slf_frame.data = (void *)coro;
2320
2321 frame->prepare = prepare_nop;
2322 frame->check = slf_check_nop;
2323 }
2324 else if (coro_hv == (HV *)SvRV (coro_current))
2325 {
2326 /* cancelling the current coro is allowed, and equals terminate */
2327 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2328 }
2329 else
2330 {
2331 struct coro *self = SvSTATE_current;
2332
2333 if (!self)
2334 croak ("Coro::cancel called outside of thread content,");
2335
2336 /* otherwise we cancel directly, purely for speed reasons
2337 * unfortunately, this requires some magic trickery, as
2338 * somebody else could cancel us, so we have to fight the cancellation.
2339 * this is ugly, and hopefully fully worth the extra speed.
2340 * besides, I can't get the slow-but-safe version working...
2341 */
2342 slf_frame.data = 0;
2343 self->flags |= CF_NOCANCEL;
2344 coro_state_destroy (aTHX_ coro);
2345 self->flags &= ~CF_NOCANCEL;
2346
2347 if (slf_frame.data)
2348 {
2349 /* while we were busy we have been cancelled, so terminate */
2350 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2351 }
2352 else
2353 {
2354 frame->prepare = prepare_nop;
2355 frame->check = slf_check_nop;
2356 }
2357 }
2358}
2359
2360static int
2361slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2362{
2363 frame->prepare = 0;
2364 coro_unwind_stacks (aTHX);
2365
2366 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2367
2368 return 1;
2369}
2370
2371static int
2372safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2373{
2374 if (coro->cctx)
2375 croak ("coro inside C callback, unable to cancel at this time, caught");
2376
2377 if (coro->flags & CF_NEW)
2378 {
2379 coro_set_status (aTHX_ coro, arg, items);
2380 coro_state_destroy (aTHX_ coro);
2381 }
2382 else
2383 {
2384 if (!coro->slf_frame.prepare)
2385 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2386
2387 slf_destroy (aTHX_ coro);
2388
2389 coro_set_status (aTHX_ coro, arg, items);
2390 coro->slf_frame.prepare = prepare_nop;
2391 coro->slf_frame.check = slf_check_safe_cancel;
2392
2393 api_ready (aTHX_ (SV *)coro->hv);
2394 }
2395
2396 return 1;
2397}
2398
2399/*****************************************************************************/
2400/* async pool handler */
2401
2402static int
2403slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2404{
2405 HV *hv = (HV *)SvRV (coro_current);
2406 struct coro *coro = (struct coro *)frame->data;
2407
2408 if (!coro->invoke_cb)
2409 return 1; /* loop till we have invoke */
2410 else
2411 {
2412 hv_store (hv, "desc", sizeof ("desc") - 1,
2413 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2414
2415 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2416
2417 {
2418 dSP;
2419 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2420 PUTBACK;
2421 }
2422
2423 SvREFCNT_dec (GvAV (PL_defgv));
2424 GvAV (PL_defgv) = coro->invoke_av;
2425 coro->invoke_av = 0;
2426
2427 return 0;
2428 }
2429}
2430
2431static void
2432slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2433{
2434 HV *hv = (HV *)SvRV (coro_current);
2435 struct coro *coro = SvSTATE_hv ((SV *)hv);
2436
2437 if (ecb_expect_true (coro->saved_deffh))
2438 {
2439 /* subsequent iteration */
2440 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2441 coro->saved_deffh = 0;
2442
2443 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2444 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2445 {
2446 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2447 return;
2448 }
2449 else
2450 {
2451 av_clear (GvAV (PL_defgv));
2452 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2453
2454 if (ecb_expect_false (coro->swap_sv))
2455 {
2456 SWAP_SVS_LEAVE (coro);
2457 SvREFCNT_dec_NN (coro->swap_sv);
2458 coro->swap_sv = 0;
2459 }
2460
2461 coro->prio = 0;
2462
2463 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2464 api_trace (aTHX_ coro_current, 0);
2465
2466 frame->prepare = prepare_schedule;
2467 av_push (av_async_pool, SvREFCNT_inc (hv));
2468 }
2469 }
2470 else
2471 {
2472 /* first iteration, simply fall through */
2473 frame->prepare = prepare_nop;
2474 }
2475
2476 frame->check = slf_check_pool_handler;
2477 frame->data = (void *)coro;
2478}
2479
2480/*****************************************************************************/
2481/* rouse callback */
2482
2483#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2484
2485static void
2486coro_rouse_callback (pTHX_ CV *cv)
2487{
2488 dXSARGS;
2489 SV *data = (SV *)S_GENSUB_ARG;
2490
2491 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2492 {
2493 /* first call, set args */
2494 SV *coro = SvRV (data);
2495 AV *av = newAV ();
2496
2497 SvRV_set (data, (SV *)av);
2498
2499 /* better take a full copy of the arguments */
2500 while (items--)
2501 av_store (av, items, newSVsv (ST (items)));
2502
2503 api_ready (aTHX_ coro);
2504 SvREFCNT_dec (coro);
2505 }
2506
2507 XSRETURN_EMPTY;
2508}
2509
2510static int
2511slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2512{
2513 SV *data = (SV *)frame->data;
2514
2515 if (CORO_THROW)
2516 return 0;
2517
2518 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2519 return 1;
2520
2521 /* now push all results on the stack */
2522 {
2523 dSP;
2524 AV *av = (AV *)SvRV (data);
2525 int i;
2526
2527 EXTEND (SP, AvFILLp (av) + 1);
2528 for (i = 0; i <= AvFILLp (av); ++i)
2529 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2530
2531 /* we have stolen the elements, so set length to zero and free */
2532 AvFILLp (av) = -1;
2533 av_undef (av);
2534
2535 PUTBACK;
2536 }
2537
2538 return 0;
2539}
2540
2541static void
2542slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2543{
2544 SV *cb;
2545
2546 if (items)
2547 cb = arg [0];
2548 else
2549 {
2550 struct coro *coro = SvSTATE_current;
2551
2552 if (!coro->rouse_cb)
2553 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2554
2555 cb = sv_2mortal (coro->rouse_cb);
2556 coro->rouse_cb = 0;
2557 }
2558
2559 if (!SvROK (cb)
2560 || SvTYPE (SvRV (cb)) != SVt_PVCV
2561 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2562 croak ("Coro::rouse_wait called with illegal callback argument,");
2563
2564 {
2565 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2566 SV *data = (SV *)S_GENSUB_ARG;
2567
2568 frame->data = (void *)data;
2569 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2570 frame->check = slf_check_rouse_wait;
2571 }
2572}
2573
2574static SV *
2575coro_new_rouse_cb (pTHX)
2576{
2577 HV *hv = (HV *)SvRV (coro_current);
2578 struct coro *coro = SvSTATE_hv (hv);
2579 SV *data = newRV_inc ((SV *)hv);
2580 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2581
2582 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2583 SvREFCNT_dec (data); /* magicext increases the refcount */
2584
2585 SvREFCNT_dec (coro->rouse_cb);
2586 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2587
2588 return cb;
2589}
2590
2591/*****************************************************************************/
2592/* schedule-like-function opcode (SLF) */
2593
2594static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2595static const CV *slf_cv;
2596static SV **slf_argv;
2597static int slf_argc, slf_arga; /* count, allocated */
2598static I32 slf_ax; /* top of stack, for restore */
2599
2600/* this restores the stack in the case we patched the entersub, to */
2601/* recreate the stack frame as perl will on following calls */
2602/* since entersub cleared the stack */
2603static OP *
2604pp_restore (pTHX)
2605{
2606 int i;
2607 SV **SP = PL_stack_base + slf_ax;
2608
2609 PUSHMARK (SP);
2610
2611 EXTEND (SP, slf_argc + 1);
2612
2613 for (i = 0; i < slf_argc; ++i)
2614 PUSHs (sv_2mortal (slf_argv [i]));
2615
2616 PUSHs ((SV *)CvGV (slf_cv));
2617
2618 RETURNOP (slf_restore.op_first);
2619}
2620
2621static void
2622slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2623{
2624 SV **arg = (SV **)slf_frame.data;
2625
2626 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2627}
2628
2629static void
2630slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2631{
2632 if (items != 2)
2633 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2634
2635 frame->prepare = slf_prepare_transfer;
2636 frame->check = slf_check_nop;
2637 frame->data = (void *)arg; /* let's hope it will stay valid */
2638}
2639
2640static void
2641slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2642{
2643 frame->prepare = prepare_schedule;
2644 frame->check = slf_check_nop;
2645}
2646
2647static void
2648slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2649{
2650 struct coro *next = (struct coro *)slf_frame.data;
2651
2652 SvREFCNT_inc_NN (next->hv);
2653 prepare_schedule_to (aTHX_ ta, next);
2654}
2655
2656static void
2657slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2658{
2659 if (!items)
2660 croak ("Coro::schedule_to expects a coroutine argument, caught");
2661
2662 frame->data = (void *)SvSTATE (arg [0]);
2663 frame->prepare = slf_prepare_schedule_to;
2664 frame->check = slf_check_nop;
2665}
2666
2667static void
2668slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2669{
2670 api_ready (aTHX_ SvRV (coro_current));
2671
2672 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2673}
2674
2675static void
2676slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2677{
2678 frame->prepare = prepare_cede;
2679 frame->check = slf_check_nop;
2680}
2681
2682static void
2683slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2684{
2685 frame->prepare = prepare_cede_notself;
2686 frame->check = slf_check_nop;
2687}
2688
2689/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2690static void
2691slf_destroy (pTHX_ struct coro *coro)
2692{
2693 struct CoroSLF frame = coro->slf_frame;
2694
2695 /*
2696 * The on_destroy below most likely is from an SLF call.
2697 * Since by definition the SLF call will not finish when we destroy
2698 * the coro, we will have to force-finish it here, otherwise
2699 * cleanup functions cannot call SLF functions.
2700 */
2701 coro->slf_frame.prepare = 0;
2702
2703 /* this callback is reserved for slf functions needing to do cleanup */
2704 if (frame.destroy && frame.prepare && !PL_dirty)
2705 frame.destroy (aTHX_ &frame);
2706}
2707
2708/*
2709 * these not obviously related functions are all rolled into one
2710 * function to increase chances that they all will call transfer with the same
2711 * stack offset
2712 * SLF stands for "schedule-like-function".
2713 */
2714static OP *
2715pp_slf (pTHX)
2716{
2717 I32 checkmark; /* mark SP to see how many elements check has pushed */
2718
2719 /* set up the slf frame, unless it has already been set-up */
2720 /* the latter happens when a new coro has been started */
2721 /* or when a new cctx was attached to an existing coroutine */
2722 if (ecb_expect_true (!slf_frame.prepare))
2723 {
2724 /* first iteration */
2725 dSP;
2726 SV **arg = PL_stack_base + TOPMARK + 1;
2727 int items = SP - arg; /* args without function object */
2728 SV *gv = *sp;
2729
2730 /* do a quick consistency check on the "function" object, and if it isn't */
2731 /* for us, divert to the real entersub */
2732 if (SvTYPE (gv) != SVt_PVGV
2733 || !GvCV (gv)
2734 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2735 return PL_ppaddr[OP_ENTERSUB](aTHX);
2736
2737 if (!(PL_op->op_flags & OPf_STACKED))
2738 {
2739 /* ampersand-form of call, use @_ instead of stack */
2740 AV *av = GvAV (PL_defgv);
2741 arg = AvARRAY (av);
2742 items = AvFILLp (av) + 1;
2743 }
2744
2745 /* now call the init function, which needs to set up slf_frame */
2746 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2747 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2748
2749 /* pop args */
2750 SP = PL_stack_base + POPMARK;
2751
2752 PUTBACK;
2753 }
2754
2755 /* now that we have a slf_frame, interpret it! */
2756 /* we use a callback system not to make the code needlessly */
2757 /* complicated, but so we can run multiple perl coros from one cctx */
2758
2759 do
2760 {
2761 struct coro_transfer_args ta;
2762
2763 slf_frame.prepare (aTHX_ &ta);
2764 TRANSFER (ta, 0);
2765
2766 checkmark = PL_stack_sp - PL_stack_base;
2767 }
2768 while (slf_frame.check (aTHX_ &slf_frame));
2769
2770 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2771
2772 /* exception handling */
2773 if (ecb_expect_false (CORO_THROW))
2774 {
2775 SV *exception = sv_2mortal (CORO_THROW);
2776
2777 CORO_THROW = 0;
2778 sv_setsv (ERRSV, exception);
2779 croak (0);
2780 }
2781
2782 /* return value handling - mostly like entersub */
2783 /* make sure we put something on the stack in scalar context */
2784 if (GIMME_V == G_SCALAR
2785 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2786 {
2787 dSP;
2788 SV **bot = PL_stack_base + checkmark;
2789
2790 if (sp == bot) /* too few, push undef */
2791 bot [1] = &PL_sv_undef;
2792 else /* too many, take last one */
2793 bot [1] = *sp;
2794
2795 SP = bot + 1;
2796
2797 PUTBACK;
2798 }
2799
2800 return NORMAL;
2801}
2802
2803static void
2804api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2805{
2806 int i;
2807 SV **arg = PL_stack_base + ax;
2808 int items = PL_stack_sp - arg + 1;
2809
2810 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2811
2812 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2813 && PL_op->op_ppaddr != pp_slf)
2814 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2815
2816 CvFLAGS (cv) |= CVf_SLF;
2817 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2818 slf_cv = cv;
2819
2820 /* we patch the op, and then re-run the whole call */
2821 /* we have to put the same argument on the stack for this to work */
2822 /* and this will be done by pp_restore */
2823 slf_restore.op_next = (OP *)&slf_restore;
2824 slf_restore.op_type = OP_CUSTOM;
2825 slf_restore.op_ppaddr = pp_restore;
2826 slf_restore.op_first = PL_op;
2827
2828 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2829
2830 if (PL_op->op_flags & OPf_STACKED)
2831 {
2832 if (items > slf_arga)
2833 {
2834 slf_arga = items;
2835 Safefree (slf_argv);
2836 New (0, slf_argv, slf_arga, SV *);
2837 }
2838
2839 slf_argc = items;
2840
2841 for (i = 0; i < items; ++i)
2842 slf_argv [i] = SvREFCNT_inc (arg [i]);
2843 }
2844 else
2845 slf_argc = 0;
2846
2847 PL_op->op_ppaddr = pp_slf;
2848 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2849
2850 PL_op = (OP *)&slf_restore;
2851}
2852
2853/*****************************************************************************/
2854/* dynamic wind */
2855
2856static void
2857on_enterleave_call (pTHX_ SV *cb)
2858{
2859 dSP;
2860
2861 PUSHSTACK;
2862
2863 PUSHMARK (SP);
2864 PUTBACK;
2865 call_sv (cb, G_VOID | G_DISCARD);
2866 SPAGAIN;
2867
2868 POPSTACK;
2869}
2870
2871static SV *
2872coro_avp_pop_and_free (pTHX_ AV **avp)
2873{
2874 AV *av = *avp;
2875 SV *res = av_pop (av);
2876
2877 if (AvFILLp (av) < 0)
2878 {
2879 *avp = 0;
2880 SvREFCNT_dec (av);
2881 }
2882
2883 return res;
2884}
2885
2886static void
2887coro_pop_on_enter (pTHX_ void *coro)
2888{
2889 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2890 SvREFCNT_dec (cb);
2891}
2892
2893static void
2894coro_pop_on_leave (pTHX_ void *coro)
2895{
2896 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2897 on_enterleave_call (aTHX_ sv_2mortal (cb));
2898}
2899
2900static void
2901enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2902{
2903 if (!hook)
2904 return;
2905
2906 if (!*avp)
2907 {
2908 *avp = newAV ();
2909 AvREAL_off (*avp);
2910 }
2911
2912 av_push (*avp, (SV *)hook);
2913 av_push (*avp, (SV *)arg);
2914}
2915
2916static void
2917enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2918{
2919 AV *av = *avp;
2920 int i;
2921
2922 if (!av)
2923 return;
2924
2925 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2926 if (AvARRAY (av)[i] == (SV *)hook)
2927 {
2928 if (execute)
2929 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2930
2931 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2932 av_pop (av);
2933 av_pop (av);
2934 break;
2935 }
2936
2937 if (AvFILLp (av) >= 0)
2938 {
2939 *avp = 0;
2940 SvREFCNT_dec_NN (av);
2941 }
2942}
2943
2944static void
2945api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2946{
2947 struct coro *coro = SvSTATE (coro_sv);
2948
2949 if (SvSTATE_current == coro)
2950 if (enter)
2951 enter (aTHX_ enter_arg);
2952
2953 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2954 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2955}
2956
2957static void
2958api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2959{
2960 struct coro *coro = SvSTATE (coro_sv);
2961
2962 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2963 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2964}
2965
2966static void
2967savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2968{
2969 struct coro *coro = SvSTATE_current;
2970
2971 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2972}
2973
2974static void
2975savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2976{
2977 struct coro *coro = SvSTATE_current;
2978
2979 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2980}
2981
2982static void
2983api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2984{
2985 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2986
2987 /* this ought to be much cheaper than malloc + a single destructor call */
2988 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2989 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2990}
2991
1699/*****************************************************************************/ 2992/*****************************************************************************/
1700/* PerlIO::cede */ 2993/* PerlIO::cede */
1701 2994
1702typedef struct 2995typedef struct
1703{ 2996{
1704 PerlIOBuf base; 2997 PerlIOBuf base;
1705 NV next, every; 2998 NV next, every;
1706} PerlIOCede; 2999} PerlIOCede;
1707 3000
1708static IV 3001static IV ecb_cold
1709PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 3002PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1710{ 3003{
1711 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3004 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1712 3005
1713 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3006 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1714 self->next = nvtime () + self->every; 3007 self->next = nvtime () + self->every;
1715 3008
1716 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3009 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1717} 3010}
1718 3011
1719static SV * 3012static SV * ecb_cold
1720PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3013PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1721{ 3014{
1722 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3015 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1723 3016
1724 return newSVnv (self->every); 3017 return newSVnv (self->every);
… …
1770 PerlIOBuf_get_cnt, 3063 PerlIOBuf_get_cnt,
1771 PerlIOBuf_set_ptrcnt, 3064 PerlIOBuf_set_ptrcnt,
1772}; 3065};
1773 3066
1774/*****************************************************************************/ 3067/*****************************************************************************/
3068/* Coro::Semaphore & Coro::Signal */
1775 3069
1776static const CV *slf_cv; /* for quick consistency check */
1777
1778static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1779static SV *slf_arg0;
1780static SV *slf_arg1;
1781static SV *slf_arg2;
1782
1783/* this restores the stack in the case we patched the entersub, to */
1784/* recreate the stack frame as perl will on following calls */
1785/* since entersub cleared the stack */
1786static OP * 3070static SV *
1787pp_restore (pTHX) 3071coro_waitarray_new (pTHX_ int count)
1788{ 3072{
1789 dSP; 3073 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3074 AV *av = newAV ();
3075 SV **ary;
1790 3076
1791 PUSHMARK (SP); 3077 /* unfortunately, building manually saves memory */
3078 Newx (ary, 2, SV *);
3079 AvALLOC (av) = ary;
3080#if PERL_VERSION_ATLEAST (5,10,0)
3081 AvARRAY (av) = ary;
3082#else
3083 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3084 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3085 SvPVX ((SV *)av) = (char *)ary;
3086#endif
3087 AvMAX (av) = 1;
3088 AvFILLp (av) = 0;
3089 ary [0] = newSViv (count);
1792 3090
1793 EXTEND (SP, 3); 3091 return newRV_noinc ((SV *)av);
1794 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1795 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1796 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1797 PUSHs ((SV *)CvGV (slf_cv));
1798
1799 RETURNOP (slf_restore.op_first);
1800} 3092}
1801 3093
1802static void 3094/* semaphore */
1803slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1804{
1805 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1806}
1807 3095
1808static void 3096static void
1809slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1810{
1811 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1812
1813 frame->prepare = slf_prepare_set_stacklevel;
1814 frame->check = slf_check_nop;
1815 frame->data = (void *)SvIV (arg [0]);
1816}
1817
1818static void
1819slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1820{
1821 SV **arg = (SV **)slf_frame.data;
1822
1823 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1824}
1825
1826static void
1827slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1828{
1829 if (items != 2)
1830 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1831
1832 frame->prepare = slf_prepare_transfer;
1833 frame->check = slf_check_nop;
1834 frame->data = (void *)arg; /* let's hope it will stay valid */
1835}
1836
1837static void
1838slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 frame->prepare = prepare_schedule;
1841 frame->check = slf_check_nop;
1842}
1843
1844static void
1845slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1846{
1847 frame->prepare = prepare_cede;
1848 frame->check = slf_check_nop;
1849}
1850
1851static void
1852slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1853{
1854 frame->prepare = prepare_cede_notself;
1855 frame->check = slf_check_nop;
1856}
1857
1858/* we hijack an hopefully unused CV flag for our purposes */
1859#define CVf_SLF 0x4000
1860
1861/*
1862 * these not obviously related functions are all rolled into one
1863 * function to increase chances that they all will call transfer with the same
1864 * stack offset
1865 * SLF stands for "schedule-like-function".
1866 */
1867static OP *
1868pp_slf (pTHX)
1869{
1870 I32 checkmark; /* mark SP to see how many elements check has pushed */
1871
1872 /* set up the slf frame, unless it has already been set-up */
1873 /* the latter happens when a new coro has been started */
1874 /* or when a new cctx was attached to an existing coroutine */
1875 if (expect_true (!slf_frame.prepare))
1876 {
1877 /* first iteration */
1878 dSP;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 SV *gv = *sp;
1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK;
1900
1901 /* now call the init function, which needs to set up slf_frame */
1902 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1903 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1904 }
1905
1906 /* now that we have a slf_frame, interpret it! */
1907 /* we use a callback system not to make the code needlessly */
1908 /* complicated, but so we can run multiple perl coros from one cctx */
1909
1910 do
1911 {
1912 struct coro_transfer_args ta;
1913
1914 slf_frame.prepare (aTHX_ &ta);
1915 TRANSFER (ta, 0);
1916
1917 checkmark = PL_stack_sp - PL_stack_base;
1918 }
1919 while (slf_frame.check (aTHX_ &slf_frame));
1920
1921 {
1922 dSP;
1923 SV **bot = PL_stack_base + checkmark;
1924 int gimme = GIMME_V;
1925
1926 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1927
1928 /* make sure we put something on the stack in scalar context */
1929 if (gimme == G_SCALAR)
1930 {
1931 if (sp == bot)
1932 XPUSHs (&PL_sv_undef);
1933
1934 SP = bot + 1;
1935 }
1936
1937 PUTBACK;
1938 }
1939
1940 return NORMAL;
1941}
1942
1943static void
1944api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1945{
1946 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1947
1948 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1949 && PL_op->op_ppaddr != pp_slf)
1950 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1951
1952 if (items > 3)
1953 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1954
1955 CvFLAGS (cv) |= CVf_SLF;
1956 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1957 slf_cv = cv;
1958
1959 /* we patch the op, and then re-run the whole call */
1960 /* we have to put the same argument on the stack for this to work */
1961 /* and this will be done by pp_restore */
1962 slf_restore.op_next = (OP *)&slf_restore;
1963 slf_restore.op_type = OP_CUSTOM;
1964 slf_restore.op_ppaddr = pp_restore;
1965 slf_restore.op_first = PL_op;
1966
1967 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1968 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1969 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1970
1971 PL_op->op_ppaddr = pp_slf;
1972
1973 PL_op = (OP *)&slf_restore;
1974}
1975
1976/*****************************************************************************/
1977
1978static void
1979coro_semaphore_adjust (AV *av, int adjust) 3097coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1980{ 3098{
1981 SV *count_sv = AvARRAY (av)[0]; 3099 SV *count_sv = AvARRAY (av)[0];
1982 IV count = SvIVX (count_sv); 3100 IV count = SvIVX (count_sv);
1983 3101
1984 count += adjust; 3102 count += adjust;
1985 SvIVX (count_sv) = count; 3103 SvIVX (count_sv) = count;
1986 3104
1987 /* now wake up as many waiters as possible */ 3105 /* now wake up as many waiters as are expected to lock */
1988 while (count > 0 && AvFILLp (av) >= count) 3106 while (count > 0 && AvFILLp (av) > 0)
1989 { 3107 {
1990 SV *cb; 3108 SV *cb;
1991 3109
1992 /* swap first two elements so we can shift a waiter */ 3110 /* swap first two elements so we can shift a waiter */
1993 AvARRAY (av)[0] = AvARRAY (av)[1]; 3111 AvARRAY (av)[0] = AvARRAY (av)[1];
1994 AvARRAY (av)[1] = count_sv; 3112 AvARRAY (av)[1] = count_sv;
1995 cb = av_shift (av); 3113 cb = av_shift (av);
1996 3114
1997 if (SvOBJECT (cb)) 3115 if (SvOBJECT (cb))
3116 {
1998 api_ready (aTHX_ cb); 3117 api_ready (aTHX_ cb);
1999 else 3118 --count;
2000 croak ("callbacks not yet supported"); 3119 }
3120 else if (SvTYPE (cb) == SVt_PVCV)
3121 {
3122 dSP;
3123 PUSHMARK (SP);
3124 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3125 PUTBACK;
3126 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3127 }
2001 3128
2002 SvREFCNT_dec (cb); 3129 SvREFCNT_dec_NN (cb);
2003
2004 --count;
2005 } 3130 }
2006} 3131}
2007 3132
2008static void 3133static void
2009coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3134coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2010{ 3135{
2011 /* call $sem->adjust (0) to possibly wake up some waiters */ 3136 /* call $sem->adjust (0) to possibly wake up some other waiters */
2012 coro_semaphore_adjust ((AV *)coro->slf_frame.data, 0); 3137 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2013} 3138}
2014 3139
2015static int 3140static int
2016slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3141slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2017{ 3142{
2018 AV *av = (AV *)frame->data; 3143 AV *av = (AV *)frame->data;
2019 SV *count_sv = AvARRAY (av)[0]; 3144 SV *count_sv = AvARRAY (av)[0];
3145 SV *coro_hv = SvRV (coro_current);
2020 3146
3147 frame->destroy = 0;
3148
3149 /* if we are about to throw, don't actually acquire the lock, just throw */
3150 if (ecb_expect_false (CORO_THROW))
3151 {
3152 /* we still might be responsible for the semaphore, so wake up others */
3153 coro_semaphore_adjust (aTHX_ av, 0);
3154
3155 return 0;
3156 }
2021 if (SvIVX (count_sv) > 0) 3157 else if (SvIVX (count_sv) > 0)
2022 { 3158 {
2023 SvSTATE (coro_current)->on_destroy = 0; 3159 if (acquire)
2024 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3160 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3161 else
3162 coro_semaphore_adjust (aTHX_ av, 0);
3163
2025 return 0; 3164 return 0;
2026 } 3165 }
2027 else 3166 else
2028 { 3167 {
2029 int i; 3168 int i;
2030 /* if we were woken up but can't down, we look through the whole */ 3169 /* if we were woken up but can't down, we look through the whole */
2031 /* waiters list and only add us if we aren't in there already */ 3170 /* waiters list and only add us if we aren't in there already */
2032 /* this avoids some degenerate memory usage cases */ 3171 /* this avoids some degenerate memory usage cases */
2033 3172 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2034 for (i = 1; i <= AvFILLp (av); ++i)
2035 if (AvARRAY (av)[i] == SvRV (coro_current)) 3173 if (AvARRAY (av)[i] == coro_hv)
2036 return 1; 3174 return 1;
2037 3175
2038 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3176 av_push (av, SvREFCNT_inc (coro_hv));
2039 return 1; 3177 return 1;
2040 } 3178 }
2041} 3179}
2042 3180
2043static void 3181static int
3182slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3183{
3184 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3185}
3186
3187static int
3188slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3189{
3190 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3191}
3192
3193static void
2044slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3194slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2045{ 3195{
2046 AV *av = (AV *)SvRV (arg [0]); 3196 AV *av = (AV *)SvRV (arg [0]);
2047 3197
2048 if (SvIVX (AvARRAY (av)[0]) > 0) 3198 if (SvIVX (AvARRAY (av)[0]) > 0)
2049 { 3199 {
… …
2054 { 3204 {
2055 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3205 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2056 3206
2057 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3207 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2058 frame->prepare = prepare_schedule; 3208 frame->prepare = prepare_schedule;
2059
2060 /* to avoid race conditions when a woken-up coro gets terminated */ 3209 /* to avoid race conditions when a woken-up coro gets terminated */
2061 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3210 /* we arrange for a temporary on_destroy that calls adjust (0) */
2062 SvSTATE (coro_current)->on_destroy = coro_semaphore_on_destroy; 3211 frame->destroy = coro_semaphore_destroy;
2063 } 3212 }
3213}
2064 3214
3215static void
3216slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3217{
3218 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 3219 frame->check = slf_check_semaphore_down;
3220}
2066 3221
3222static void
3223slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3224{
3225 if (items >= 2)
3226 {
3227 /* callback form */
3228 AV *av = (AV *)SvRV (arg [0]);
3229 SV *cb_cv = s_get_cv_croak (arg [1]);
3230
3231 av_push (av, SvREFCNT_inc_NN (cb_cv));
3232
3233 if (SvIVX (AvARRAY (av)[0]) > 0)
3234 coro_semaphore_adjust (aTHX_ av, 0);
3235
3236 frame->prepare = prepare_nop;
3237 frame->check = slf_check_nop;
3238 }
3239 else
3240 {
3241 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3242 frame->check = slf_check_semaphore_wait;
3243 }
3244}
3245
3246/* signal */
3247
3248static void
3249coro_signal_wake (pTHX_ AV *av, int count)
3250{
3251 SvIVX (AvARRAY (av)[0]) = 0;
3252
3253 /* now signal count waiters */
3254 while (count > 0 && AvFILLp (av) > 0)
3255 {
3256 SV *cb;
3257
3258 /* swap first two elements so we can shift a waiter */
3259 cb = AvARRAY (av)[0];
3260 AvARRAY (av)[0] = AvARRAY (av)[1];
3261 AvARRAY (av)[1] = cb;
3262
3263 cb = av_shift (av);
3264
3265 if (SvTYPE (cb) == SVt_PVCV)
3266 {
3267 dSP;
3268 PUSHMARK (SP);
3269 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3270 PUTBACK;
3271 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3272 }
3273 else
3274 {
3275 api_ready (aTHX_ cb);
3276 sv_setiv (cb, 0); /* signal waiter */
3277 }
3278
3279 SvREFCNT_dec_NN (cb);
3280
3281 --count;
3282 }
3283}
3284
3285static int
3286slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3287{
3288 /* if we are about to throw, also stop waiting */
3289 return SvROK ((SV *)frame->data) && !CORO_THROW;
3290}
3291
3292static void
3293slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3294{
3295 AV *av = (AV *)SvRV (arg [0]);
3296
3297 if (items >= 2)
3298 {
3299 SV *cb_cv = s_get_cv_croak (arg [1]);
3300 av_push (av, SvREFCNT_inc_NN (cb_cv));
3301
3302 if (SvIVX (AvARRAY (av)[0]))
3303 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3304
3305 frame->prepare = prepare_nop;
3306 frame->check = slf_check_nop;
3307 }
3308 else if (SvIVX (AvARRAY (av)[0]))
3309 {
3310 SvIVX (AvARRAY (av)[0]) = 0;
3311 frame->prepare = prepare_nop;
3312 frame->check = slf_check_nop;
3313 }
3314 else
3315 {
3316 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3317
3318 av_push (av, waiter);
3319
3320 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3321 frame->prepare = prepare_schedule;
3322 frame->check = slf_check_signal_wait;
3323 }
2067} 3324}
2068 3325
2069/*****************************************************************************/ 3326/*****************************************************************************/
3327/* Coro::AIO */
2070 3328
2071#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3329#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2072 3330
2073/* create a closure from XS, returns a code reference */ 3331/* helper storage struct */
2074/* the arg can be accessed via GENSUB_ARG from the callback */ 3332struct io_state
2075/* the callback must use dXSARGS/XSRETURN */ 3333{
3334 int errorno;
3335 I32 laststype; /* U16 in 5.10.0 */
3336 int laststatval;
3337 Stat_t statcache;
3338};
3339
3340static void
3341coro_aio_callback (pTHX_ CV *cv)
3342{
3343 dXSARGS;
3344 AV *state = (AV *)S_GENSUB_ARG;
3345 SV *coro = av_pop (state);
3346 SV *data_sv = newSV (sizeof (struct io_state));
3347
3348 av_extend (state, items - 1);
3349
3350 sv_upgrade (data_sv, SVt_PV);
3351 SvCUR_set (data_sv, sizeof (struct io_state));
3352 SvPOK_only (data_sv);
3353
3354 {
3355 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3356
3357 data->errorno = errno;
3358 data->laststype = PL_laststype;
3359 data->laststatval = PL_laststatval;
3360 data->statcache = PL_statcache;
3361 }
3362
3363 /* now build the result vector out of all the parameters and the data_sv */
3364 {
3365 int i;
3366
3367 for (i = 0; i < items; ++i)
3368 av_push (state, SvREFCNT_inc_NN (ST (i)));
3369 }
3370
3371 av_push (state, data_sv);
3372
3373 api_ready (aTHX_ coro);
3374 SvREFCNT_dec_NN (coro);
3375 SvREFCNT_dec_NN ((AV *)state);
3376}
3377
3378static int
3379slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3380{
3381 AV *state = (AV *)frame->data;
3382
3383 /* if we are about to throw, return early */
3384 /* this does not cancel the aio request, but at least */
3385 /* it quickly returns */
3386 if (CORO_THROW)
3387 return 0;
3388
3389 /* one element that is an RV? repeat! */
3390 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3391 return 1;
3392
3393 /* restore status */
3394 {
3395 SV *data_sv = av_pop (state);
3396 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3397
3398 errno = data->errorno;
3399 PL_laststype = data->laststype;
3400 PL_laststatval = data->laststatval;
3401 PL_statcache = data->statcache;
3402
3403 SvREFCNT_dec_NN (data_sv);
3404 }
3405
3406 /* push result values */
3407 {
3408 dSP;
3409 int i;
3410
3411 EXTEND (SP, AvFILLp (state) + 1);
3412 for (i = 0; i <= AvFILLp (state); ++i)
3413 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3414
3415 PUTBACK;
3416 }
3417
3418 return 0;
3419}
3420
3421static void
3422slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3423{
3424 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3425 SV *coro_hv = SvRV (coro_current);
3426 struct coro *coro = SvSTATE_hv (coro_hv);
3427
3428 /* put our coroutine id on the state arg */
3429 av_push (state, SvREFCNT_inc_NN (coro_hv));
3430
3431 /* first see whether we have a non-zero priority and set it as AIO prio */
3432 if (coro->prio)
3433 {
3434 dSP;
3435
3436 static SV *prio_cv;
3437 static SV *prio_sv;
3438
3439 if (ecb_expect_false (!prio_cv))
3440 {
3441 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3442 prio_sv = newSViv (0);
3443 }
3444
3445 PUSHMARK (SP);
3446 sv_setiv (prio_sv, coro->prio);
3447 XPUSHs (prio_sv);
3448
3449 PUTBACK;
3450 call_sv (prio_cv, G_VOID | G_DISCARD);
3451 }
3452
3453 /* now call the original request */
3454 {
3455 dSP;
3456 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3457 int i;
3458
3459 PUSHMARK (SP);
3460
3461 /* first push all args to the stack */
3462 EXTEND (SP, items + 1);
3463
3464 for (i = 0; i < items; ++i)
3465 PUSHs (arg [i]);
3466
3467 /* now push the callback closure */
3468 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3469
3470 /* now call the AIO function - we assume our request is uncancelable */
3471 PUTBACK;
3472 call_sv ((SV *)req, G_VOID | G_DISCARD);
3473 }
3474
3475 /* now that the request is going, we loop till we have a result */
3476 frame->data = (void *)state;
3477 frame->prepare = prepare_schedule;
3478 frame->check = slf_check_aio_req;
3479}
3480
3481static void
3482coro_aio_req_xs (pTHX_ CV *cv)
3483{
3484 dXSARGS;
3485
3486 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3487
3488 XSRETURN_EMPTY;
3489}
3490
3491/*****************************************************************************/
3492
3493#if CORO_CLONE
3494# include "clone.c"
3495#endif
3496
3497/*****************************************************************************/
3498
2076static SV * 3499static SV *
2077gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3500coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2078{ 3501{
2079 CV *cv = (CV *)NEWSV (0, 0); 3502 SV *coro_sv;
3503 struct coro *coro;
3504 MAGIC *mg;
3505 HV *hv;
3506 SV *cb;
3507 int i;
2080 3508
2081 sv_upgrade ((SV *)cv, SVt_PVCV); 3509 if (argc > 0)
3510 {
3511 cb = s_get_cv_croak (argv [0]);
2082 3512
2083 CvANON_on (cv); 3513 if (!is_coro)
2084 CvISXSUB_on (cv); 3514 {
2085 CvXSUB (cv) = xsub; 3515 if (CvISXSUB (cb))
2086 GENSUB_ARG = arg; 3516 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2087 3517
2088 return newRV_noinc ((SV *)cv); 3518 if (!CvROOT (cb))
2089} 3519 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3520 }
3521 }
2090 3522
2091/*****************************************************************************/ 3523 Newz (0, coro, 1, struct coro);
3524 coro->args = newAV ();
3525 coro->flags = CF_NEW;
3526
3527 if (coro_first) coro_first->prev = coro;
3528 coro->next = coro_first;
3529 coro_first = coro;
3530
3531 coro->hv = hv = newHV ();
3532 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3533 mg->mg_flags |= MGf_DUP;
3534 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3535
3536 if (argc > 0)
3537 {
3538 av_extend (coro->args, argc + is_coro - 1);
3539
3540 if (is_coro)
3541 {
3542 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3543 cb = (SV *)cv_coro_run;
3544 }
3545
3546 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3547
3548 for (i = 1; i < argc; i++)
3549 av_push (coro->args, newSVsv (argv [i]));
3550 }
3551
3552 return coro_sv;
3553}
3554
3555#ifndef __cplusplus
3556ecb_cold XS(boot_Coro__State);
3557#endif
3558
3559#if CORO_JIT
3560
3561static void ecb_noinline ecb_cold
3562pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3563{
3564 dSP;
3565 AV *av = newAV ();
3566
3567 av_store (av, 3, newSVuv (d));
3568 av_store (av, 2, newSVuv (c));
3569 av_store (av, 1, newSVuv (b));
3570 av_store (av, 0, newSVuv (a));
3571
3572 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3573
3574 PUTBACK;
3575}
3576
3577static void ecb_noinline ecb_cold
3578jit_init (pTHX)
3579{
3580 dSP;
3581 SV *load, *save;
3582 char *map_base;
3583 char *load_ptr, *save_ptr;
3584 STRLEN load_len, save_len, map_len;
3585 int count;
3586
3587 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3588
3589 PUSHMARK (SP);
3590 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3591 #include "state.h"
3592 count = call_pv ("Coro::State::_jit", G_ARRAY);
3593 SPAGAIN;
3594
3595 save = POPs; save_ptr = SvPVbyte (save, save_len);
3596 load = POPs; load_ptr = SvPVbyte (load, load_len);
3597
3598 map_len = load_len + save_len + 16;
3599
3600 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3601
3602 if (map_base == (char *)MAP_FAILED)
3603 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3604
3605 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3606
3607 load_perl_slots = (load_save_perl_slots_type)map_base;
3608 memcpy (map_base, load_ptr, load_len);
3609
3610 map_base += (load_len + 15) & ~15;
3611
3612 save_perl_slots = (load_save_perl_slots_type)map_base;
3613 memcpy (map_base, save_ptr, save_len);
3614
3615 /* we are good citizens and try to make the page read-only, so the evil evil */
3616 /* hackers might have it a bit more difficult */
3617 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3618
3619 PUTBACK;
3620 eval_pv ("undef &Coro::State::_jit", 1);
3621}
3622
3623#endif
2092 3624
2093MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3625MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2094 3626
2095PROTOTYPES: DISABLE 3627PROTOTYPES: DISABLE
2096 3628
2097BOOT: 3629BOOT:
2098{ 3630{
3631#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3632#include "state.h"
2099#ifdef USE_ITHREADS 3633#ifdef USE_ITHREADS
2100 MUTEX_INIT (&coro_lock);
2101# if CORO_PTHREAD 3634# if CORO_PTHREAD
2102 coro_thx = PERL_GET_CONTEXT; 3635 coro_thx = PERL_GET_CONTEXT;
2103# endif 3636# endif
2104#endif 3637#endif
2105 BOOT_PAGESIZE; 3638 /* perl defines these to check for existance first, but why it doesn't */
3639 /* just create them one at init time is not clear to me, except for */
3640 /* programs trying to delete them, but... */
3641 /* anyway, we declare this as invalid and make sure they are initialised here */
3642 DEFSV;
3643 ERRSV;
3644
3645 cctx_current = cctx_new_empty ();
2106 3646
2107 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3647 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2108 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3648 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2109 3649
2110 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3650 {
2111 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3651 /*
2112 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3652 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3653 * by coro_sig_vtbl in hash values.
3654 */
3655 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3656
3657 /* this only works if perl doesn't have a vtbl for %SIG */
3658 assert (!mg->mg_virtual);
3659
3660 /*
3661 * The irony is that the perl API itself asserts that mg_virtual
3662 * must be non-const, yet perl5porters insisted on marking their
3663 * vtbls as read-only, just to thwart perl modules from patching
3664 * them.
3665 */
3666 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3667 mg->mg_flags |= MGf_COPY;
3668
3669 coro_sigelem_vtbl = PL_vtbl_sigelem;
3670 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3671 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3672 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3673 }
2113 3674
2114 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2115 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3675 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2116 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3676 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2117 3677
2118 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3678 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
2119 3679
… …
2130 3690
2131 { 3691 {
2132 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3692 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2133 3693
2134 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3694 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2135 hv_store_ent (PL_custom_op_names, slf, 3695 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2136 newSVpv ("coro_slf", 0), 0);
2137 3696
2138 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3697 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2139 hv_store_ent (PL_custom_op_descs, slf, 3698 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2140 newSVpv ("coro schedule like function", 0), 0);
2141 } 3699 }
2142 3700
2143 coroapi.ver = CORO_API_VERSION; 3701 coroapi.ver = CORO_API_VERSION;
2144 coroapi.rev = CORO_API_REVISION; 3702 coroapi.rev = CORO_API_REVISION;
2145 3703
… …
2150 coroapi.prepare_nop = prepare_nop; 3708 coroapi.prepare_nop = prepare_nop;
2151 coroapi.prepare_schedule = prepare_schedule; 3709 coroapi.prepare_schedule = prepare_schedule;
2152 coroapi.prepare_cede = prepare_cede; 3710 coroapi.prepare_cede = prepare_cede;
2153 coroapi.prepare_cede_notself = prepare_cede_notself; 3711 coroapi.prepare_cede_notself = prepare_cede_notself;
2154 3712
2155 { 3713 time_init (aTHX);
2156 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2157 3714
2158 if (!svp) croak ("Time::HiRes is required");
2159 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2160
2161 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2162 }
2163
2164 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3715 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3716#if CORO_JIT
3717 PUTBACK;
3718 jit_init (aTHX);
3719 SPAGAIN;
3720#endif
2165} 3721}
2166 3722
2167SV * 3723SV *
2168new (char *klass, ...) 3724new (SV *klass, ...)
3725 ALIAS:
3726 Coro::new = 1
2169 CODE: 3727 CODE:
2170{ 3728 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2171 struct coro *coro; 3729 OUTPUT:
2172 MAGIC *mg;
2173 HV *hv;
2174 int i;
2175
2176 Newz (0, coro, 1, struct coro);
2177 coro->args = newAV ();
2178 coro->flags = CF_NEW;
2179
2180 if (coro_first) coro_first->prev = coro;
2181 coro->next = coro_first;
2182 coro_first = coro;
2183
2184 coro->hv = hv = newHV ();
2185 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2186 mg->mg_flags |= MGf_DUP;
2187 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2188
2189 av_extend (coro->args, items - 1);
2190 for (i = 1; i < items; i++)
2191 av_push (coro->args, newSVsv (ST (i)));
2192}
2193 OUTPUT:
2194 RETVAL 3730 RETVAL
2195
2196void
2197_set_stacklevel (...)
2198 CODE:
2199 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2200 3731
2201void 3732void
2202transfer (...) 3733transfer (...)
2203 PROTOTYPE: $$ 3734 PROTOTYPE: $$
2204 CODE: 3735 CODE:
2205 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3736 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2206 3737
2207bool 3738SV *
2208_destroy (SV *coro_sv) 3739clone (Coro::State coro)
2209 CODE: 3740 CODE:
2210 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3741{
3742#if CORO_CLONE
3743 struct coro *ncoro = coro_clone (aTHX_ coro);
3744 MAGIC *mg;
3745 /* TODO: too much duplication */
3746 ncoro->hv = newHV ();
3747 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3748 mg->mg_flags |= MGf_DUP;
3749 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3750#else
3751 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3752#endif
3753}
2211 OUTPUT: 3754 OUTPUT:
2212 RETVAL 3755 RETVAL
2213
2214void
2215_exit (int code)
2216 PROTOTYPE: $
2217 CODE:
2218 _exit (code);
2219 3756
2220int 3757int
2221cctx_stacksize (int new_stacksize = 0) 3758cctx_stacksize (int new_stacksize = 0)
2222 PROTOTYPE: ;$ 3759 PROTOTYPE: ;$
2223 CODE: 3760 CODE:
… …
2259void 3796void
2260list () 3797list ()
2261 PROTOTYPE: 3798 PROTOTYPE:
2262 PPCODE: 3799 PPCODE:
2263{ 3800{
2264 struct coro *coro; 3801 struct coro *coro;
2265 for (coro = coro_first; coro; coro = coro->next) 3802 for (coro = coro_first; coro; coro = coro->next)
2266 if (coro->hv) 3803 if (coro->hv)
2267 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3804 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2268} 3805}
2269 3806
… …
2273 eval = 1 3810 eval = 1
2274 CODE: 3811 CODE:
2275{ 3812{
2276 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3813 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2277 { 3814 {
2278 struct coro temp; 3815 struct coro *current = SvSTATE_current;
3816 struct CoroSLF slf_save;
2279 3817
2280 if (!(coro->flags & CF_RUNNING)) 3818 if (current != coro)
2281 { 3819 {
2282 PUTBACK; 3820 PUTBACK;
2283 save_perl (aTHX_ &temp); 3821 save_perl (aTHX_ current);
2284 load_perl (aTHX_ coro); 3822 load_perl (aTHX_ coro);
3823 /* the coro is most likely in an active SLF call.
3824 * while not strictly required (the code we execute is
3825 * not allowed to call any SLF functions), it's cleaner
3826 * to reinitialise the slf_frame and restore it later.
3827 * This might one day allow us to actually do SLF calls
3828 * from code executed here.
3829 */
3830 slf_save = slf_frame;
3831 slf_frame.prepare = 0;
3832 SPAGAIN;
2285 } 3833 }
2286 3834
2287 {
2288 dSP;
2289 ENTER;
2290 SAVETMPS;
2291 PUTBACK;
2292 PUSHSTACK; 3835 PUSHSTACK;
3836
2293 PUSHMARK (SP); 3837 PUSHMARK (SP);
3838 PUTBACK;
2294 3839
2295 if (ix) 3840 if (ix)
2296 eval_sv (coderef, 0); 3841 eval_sv (coderef, 0);
2297 else 3842 else
2298 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3843 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2299 3844
2300 POPSTACK; 3845 POPSTACK;
2301 SPAGAIN; 3846 SPAGAIN;
2302 FREETMPS;
2303 LEAVE;
2304 PUTBACK;
2305 }
2306 3847
2307 if (!(coro->flags & CF_RUNNING)) 3848 if (current != coro)
2308 { 3849 {
3850 PUTBACK;
3851 slf_frame = slf_save;
2309 save_perl (aTHX_ coro); 3852 save_perl (aTHX_ coro);
2310 load_perl (aTHX_ &temp); 3853 load_perl (aTHX_ current);
2311 SPAGAIN; 3854 SPAGAIN;
2312 } 3855 }
2313 } 3856 }
2314} 3857}
2315 3858
… …
2318 PROTOTYPE: $ 3861 PROTOTYPE: $
2319 ALIAS: 3862 ALIAS:
2320 is_ready = CF_READY 3863 is_ready = CF_READY
2321 is_running = CF_RUNNING 3864 is_running = CF_RUNNING
2322 is_new = CF_NEW 3865 is_new = CF_NEW
2323 is_destroyed = CF_DESTROYED 3866 is_destroyed = CF_ZOMBIE
3867 is_zombie = CF_ZOMBIE
3868 is_suspended = CF_SUSPENDED
2324 CODE: 3869 CODE:
2325 RETVAL = boolSV (coro->flags & ix); 3870 RETVAL = boolSV (coro->flags & ix);
2326 OUTPUT: 3871 OUTPUT:
2327 RETVAL 3872 RETVAL
2328 3873
2329void 3874void
2330throw (Coro::State self, SV *throw = &PL_sv_undef) 3875throw (SV *self, SV *exception = &PL_sv_undef)
2331 PROTOTYPE: $;$ 3876 PROTOTYPE: $;$
2332 CODE: 3877 CODE:
3878{
3879 struct coro *coro = SvSTATE (self);
3880 struct coro *current = SvSTATE_current;
3881 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2333 SvREFCNT_dec (self->throw); 3882 SvREFCNT_dec (*exceptionp);
2334 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3883 SvGETMAGIC (exception);
3884 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3885
3886 api_ready (aTHX_ self);
3887}
2335 3888
2336void 3889void
2337api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3890api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2338 PROTOTYPE: $;$ 3891 PROTOTYPE: $;$
2339 C_ARGS: aTHX_ coro, flags 3892 C_ARGS: aTHX_ coro, flags
2340 3893
2341SV * 3894SV *
2342has_cctx (Coro::State coro) 3895has_cctx (Coro::State coro)
2343 PROTOTYPE: $ 3896 PROTOTYPE: $
2344 CODE: 3897 CODE:
2345 RETVAL = boolSV (!!coro->cctx); 3898 /* maybe manage the running flag differently */
3899 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2346 OUTPUT: 3900 OUTPUT:
2347 RETVAL 3901 RETVAL
2348 3902
2349int 3903int
2350is_traced (Coro::State coro) 3904is_traced (Coro::State coro)
… …
2370 3924
2371void 3925void
2372force_cctx () 3926force_cctx ()
2373 PROTOTYPE: 3927 PROTOTYPE:
2374 CODE: 3928 CODE:
2375 struct coro *coro = SvSTATE (coro_current);
2376 coro->cctx->idle_sp = 0; 3929 cctx_current->idle_sp = 0;
2377 3930
2378void 3931void
2379swap_defsv (Coro::State self) 3932swap_defsv (Coro::State self)
2380 PROTOTYPE: $ 3933 PROTOTYPE: $
2381 ALIAS: 3934 ALIAS:
… …
2389 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3942 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2390 3943
2391 SV *tmp = *src; *src = *dst; *dst = tmp; 3944 SV *tmp = *src; *src = *dst; *dst = tmp;
2392 } 3945 }
2393 3946
3947void
3948cancel (Coro::State self)
3949 CODE:
3950 coro_state_destroy (aTHX_ self);
3951
3952SV *
3953enable_times (int enabled = enable_times)
3954 CODE:
3955{
3956 RETVAL = boolSV (enable_times);
3957
3958 if (enabled != enable_times)
3959 {
3960 enable_times = enabled;
3961
3962 coro_times_update ();
3963 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3964 }
3965}
3966 OUTPUT:
3967 RETVAL
3968
3969void
3970times (Coro::State self)
3971 PPCODE:
3972{
3973 struct coro *current = SvSTATE (coro_current);
3974
3975 if (ecb_expect_false (current == self))
3976 {
3977 coro_times_update ();
3978 coro_times_add (SvSTATE (coro_current));
3979 }
3980
3981 EXTEND (SP, 2);
3982 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3983 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3984
3985 if (ecb_expect_false (current == self))
3986 coro_times_sub (SvSTATE (coro_current));
3987}
3988
3989void
3990swap_sv (Coro::State coro, SV *sva, SV *svb)
3991 CODE:
3992{
3993 struct coro *current = SvSTATE_current;
3994 AV *swap_sv;
3995 int i;
3996
3997 sva = SvRV (sva);
3998 svb = SvRV (svb);
3999
4000 if (current == coro)
4001 SWAP_SVS_LEAVE (current);
4002
4003 if (!coro->swap_sv)
4004 coro->swap_sv = newAV ();
4005
4006 swap_sv = coro->swap_sv;
4007
4008 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
4009 {
4010 SV *a = AvARRAY (swap_sv)[i ];
4011 SV *b = AvARRAY (swap_sv)[i + 1];
4012
4013 if (a == sva && b == svb)
4014 {
4015 SvREFCNT_dec_NN (a);
4016 SvREFCNT_dec_NN (b);
4017
4018 for (; i <= AvFILLp (swap_sv) - 2; i++)
4019 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4020
4021 AvFILLp (swap_sv) -= 2;
4022
4023 goto removed;
4024 }
4025 }
4026
4027 av_push (swap_sv, SvREFCNT_inc_NN (sva));
4028 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4029
4030 removed:
4031
4032 if (current == coro)
4033 SWAP_SVS_ENTER (current);
4034}
4035
4036
2394MODULE = Coro::State PACKAGE = Coro 4037MODULE = Coro::State PACKAGE = Coro
2395 4038
2396BOOT: 4039BOOT:
2397{ 4040{
2398 int i; 4041 if (SVt_LAST > 32)
4042 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2399 4043
2400 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2401 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4044 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2402 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4045 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2403 4046 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2404 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 4047 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2405 SvREADONLY_on (coro_current); 4048 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
4049 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
4050 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
4051 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
4052
4053 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
4054 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
4055 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
4056 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2406 4057
2407 coro_stash = gv_stashpv ("Coro", TRUE); 4058 coro_stash = gv_stashpv ("Coro", TRUE);
2408 4059
2409 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4060 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2410 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4061 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2411 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4062 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2412 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4063 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2413 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4064 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2414 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4065 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2415
2416 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2417 coro_ready[i] = newAV ();
2418 4066
2419 { 4067 {
2420 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4068 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2421 4069
2422 coroapi.schedule = api_schedule; 4070 coroapi.schedule = api_schedule;
4071 coroapi.schedule_to = api_schedule_to;
2423 coroapi.cede = api_cede; 4072 coroapi.cede = api_cede;
2424 coroapi.cede_notself = api_cede_notself; 4073 coroapi.cede_notself = api_cede_notself;
2425 coroapi.ready = api_ready; 4074 coroapi.ready = api_ready;
2426 coroapi.is_ready = api_is_ready; 4075 coroapi.is_ready = api_is_ready;
2427 coroapi.nready = coro_nready; 4076 coroapi.nready = coro_nready;
2428 coroapi.current = coro_current; 4077 coroapi.current = coro_current;
2429 4078
4079 coroapi.enterleave_hook = api_enterleave_hook;
4080 coroapi.enterleave_unhook = api_enterleave_unhook;
4081 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4082
2430 GCoroAPI = &coroapi; 4083 /*GCoroAPI = &coroapi;*/
2431 sv_setiv (sv, (IV)&coroapi); 4084 sv_setiv (sv, PTR2IV (&coroapi));
2432 SvREADONLY_on (sv); 4085 SvREADONLY_on (sv);
2433 } 4086 }
2434} 4087}
4088
4089SV *
4090async (...)
4091 PROTOTYPE: &@
4092 CODE:
4093 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4094 api_ready (aTHX_ RETVAL);
4095 OUTPUT:
4096 RETVAL
4097
4098void
4099_destroy (Coro::State coro)
4100 CODE:
4101 /* used by the manager thread */
4102 coro_state_destroy (aTHX_ coro);
4103
4104void
4105on_destroy (Coro::State coro, SV *cb)
4106 CODE:
4107 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4108
4109void
4110join (...)
4111 CODE:
4112 CORO_EXECUTE_SLF_XS (slf_init_join);
4113
4114void
4115terminate (...)
4116 CODE:
4117 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4118
4119void
4120cancel (...)
4121 CODE:
4122 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4123
4124int
4125safe_cancel (Coro::State self, ...)
4126 C_ARGS: aTHX_ self, &ST (1), items - 1
2435 4127
2436void 4128void
2437schedule (...) 4129schedule (...)
2438 CODE: 4130 CODE:
2439 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 4131 CORO_EXECUTE_SLF_XS (slf_init_schedule);
4132
4133void
4134schedule_to (...)
4135 CODE:
4136 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4137
4138void
4139cede_to (...)
4140 CODE:
4141 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2440 4142
2441void 4143void
2442cede (...) 4144cede (...)
2443 CODE: 4145 CODE:
2444 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 4146 CORO_EXECUTE_SLF_XS (slf_init_cede);
2445 4147
2446void 4148void
2447cede_notself (...) 4149cede_notself (...)
2448 CODE: 4150 CODE:
2449 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 4151 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2450 4152
2451void 4153void
2452_set_current (SV *current) 4154_set_current (SV *current)
2453 PROTOTYPE: $ 4155 PROTOTYPE: $
2454 CODE: 4156 CODE:
2455 SvREFCNT_dec (SvRV (coro_current)); 4157 SvREFCNT_dec_NN (SvRV (coro_current));
2456 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4158 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2457 4159
2458void 4160void
2459_set_readyhook (SV *hook) 4161_set_readyhook (SV *hook)
2460 PROTOTYPE: $ 4162 PROTOTYPE: $
2461 CODE: 4163 CODE:
2462 SvREFCNT_dec (coro_readyhook); 4164 SvREFCNT_dec (coro_readyhook);
4165 SvGETMAGIC (hook);
4166 if (SvOK (hook))
4167 {
2463 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4168 coro_readyhook = newSVsv (hook);
4169 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4170 }
4171 else
4172 {
4173 coro_readyhook = 0;
4174 CORO_READYHOOK = 0;
4175 }
2464 4176
2465int 4177int
2466prio (Coro::State coro, int newprio = 0) 4178prio (Coro::State coro, int newprio = 0)
2467 PROTOTYPE: $;$ 4179 PROTOTYPE: $;$
2468 ALIAS: 4180 ALIAS:
… …
2474 if (items > 1) 4186 if (items > 1)
2475 { 4187 {
2476 if (ix) 4188 if (ix)
2477 newprio = coro->prio - newprio; 4189 newprio = coro->prio - newprio;
2478 4190
2479 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4191 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2480 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4192 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2481 4193
2482 coro->prio = newprio; 4194 coro->prio = newprio;
2483 } 4195 }
2484} 4196}
2485 OUTPUT: 4197 OUTPUT:
… …
2499 CODE: 4211 CODE:
2500 RETVAL = coro_nready; 4212 RETVAL = coro_nready;
2501 OUTPUT: 4213 OUTPUT:
2502 RETVAL 4214 RETVAL
2503 4215
2504# for async_pool speedup
2505void 4216void
2506_pool_1 (SV *cb) 4217suspend (Coro::State self)
4218 PROTOTYPE: $
2507 CODE: 4219 CODE:
2508{ 4220 self->flags |= CF_SUSPENDED;
2509 struct coro *coro = SvSTATE (coro_current);
2510 HV *hv = (HV *)SvRV (coro_current);
2511 AV *defav = GvAV (PL_defgv);
2512 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2513 AV *invoke_av;
2514 int i, len;
2515 4221
2516 if (!invoke) 4222void
4223resume (Coro::State self)
4224 PROTOTYPE: $
4225 CODE:
4226 self->flags &= ~CF_SUSPENDED;
4227
4228void
4229_pool_handler (...)
4230 CODE:
4231 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4232
4233void
4234async_pool (SV *cv, ...)
4235 PROTOTYPE: &@
4236 PPCODE:
4237{
4238 HV *hv = (HV *)av_pop (av_async_pool);
4239 AV *av = newAV ();
4240 SV *cb = ST (0);
4241 int i;
4242
4243 av_extend (av, items - 2);
4244 for (i = 1; i < items; ++i)
4245 av_push (av, SvREFCNT_inc_NN (ST (i)));
4246
4247 if ((SV *)hv == &PL_sv_undef)
2517 { 4248 {
2518 SV *old = PL_diehook; 4249 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2519 PL_diehook = 0; 4250 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2520 SvREFCNT_dec (old); 4251 SvREFCNT_dec_NN (sv);
2521 croak ("\3async_pool terminate\2\n");
2522 } 4252 }
2523 4253
2524 SvREFCNT_dec (coro->saved_deffh);
2525 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2526
2527 hv_store (hv, "desc", sizeof ("desc") - 1,
2528 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2529
2530 invoke_av = (AV *)SvRV (invoke);
2531 len = av_len (invoke_av);
2532
2533 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2534
2535 if (len > 0)
2536 { 4254 {
2537 av_fill (defav, len - 1); 4255 struct coro *coro = SvSTATE_hv (hv);
2538 for (i = 0; i < len; ++i) 4256
2539 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4257 assert (!coro->invoke_cb);
4258 assert (!coro->invoke_av);
4259 coro->invoke_cb = SvREFCNT_inc (cb);
4260 coro->invoke_av = av;
2540 } 4261 }
4262
4263 api_ready (aTHX_ (SV *)hv);
4264
4265 if (GIMME_V != G_VOID)
4266 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4267 else
4268 SvREFCNT_dec_NN (hv);
2541} 4269}
4270
4271SV *
4272rouse_cb ()
4273 PROTOTYPE:
4274 CODE:
4275 RETVAL = coro_new_rouse_cb (aTHX);
4276 OUTPUT:
4277 RETVAL
2542 4278
2543void 4279void
2544_pool_2 (SV *cb) 4280rouse_wait (...)
4281 PROTOTYPE: ;$
4282 PPCODE:
4283 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4284
4285void
4286on_enter (SV *block)
4287 ALIAS:
4288 on_leave = 1
4289 PROTOTYPE: &
2545 CODE: 4290 CODE:
2546{ 4291{
2547 struct coro *coro = SvSTATE (coro_current); 4292 struct coro *coro = SvSTATE_current;
4293 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2548 4294
2549 sv_setsv (cb, &PL_sv_undef); 4295 block = s_get_cv_croak (block);
2550 4296
2551 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4297 if (!*avp)
2552 coro->saved_deffh = 0;
2553
2554 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2555 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2556 {
2557 SV *old = PL_diehook;
2558 PL_diehook = 0;
2559 SvREFCNT_dec (old);
2560 croak ("\3async_pool terminate\2\n");
2561 }
2562
2563 av_clear (GvAV (PL_defgv));
2564 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2565 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2566
2567 coro->prio = 0;
2568
2569 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2570 api_trace (aTHX_ coro_current, 0);
2571
2572 av_push (av_async_pool, newSVsv (coro_current));
2573}
2574
2575
2576MODULE = Coro::State PACKAGE = Coro::AIO
2577
2578void
2579_get_state (SV *self)
2580 PROTOTYPE: $
2581 PPCODE:
2582{
2583 AV *defav = GvAV (PL_defgv);
2584 AV *av = newAV (); 4298 *avp = newAV ();
2585 int i;
2586 SV *data_sv = newSV (sizeof (struct io_state));
2587 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2588 SvCUR_set (data_sv, sizeof (struct io_state));
2589 SvPOK_only (data_sv);
2590 4299
2591 data->errorno = errno; 4300 av_push (*avp, SvREFCNT_inc (block));
2592 data->laststype = PL_laststype;
2593 data->laststatval = PL_laststatval;
2594 data->statcache = PL_statcache;
2595 4301
2596 av_extend (av, AvFILLp (defav) + 1 + 1); 4302 if (!ix)
4303 on_enterleave_call (aTHX_ block);
2597 4304
2598 for (i = 0; i <= AvFILLp (defav); ++i) 4305 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2599 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4306 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2600 4307 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2601 av_push (av, data_sv);
2602
2603 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2604
2605 api_ready (aTHX_ self);
2606}
2607
2608void
2609_set_state (SV *state)
2610 PROTOTYPE: $
2611 PPCODE:
2612{
2613 AV *av = (AV *)SvRV (state);
2614 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2615 int i;
2616
2617 errno = data->errorno;
2618 PL_laststype = data->laststype;
2619 PL_laststatval = data->laststatval;
2620 PL_statcache = data->statcache;
2621
2622 EXTEND (SP, AvFILLp (av));
2623 for (i = 0; i < AvFILLp (av); ++i)
2624 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2625}
2626
2627
2628MODULE = Coro::State PACKAGE = Coro::AnyEvent
2629
2630BOOT:
2631 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2632
2633void
2634_schedule (...)
2635 CODE:
2636{
2637 static int incede;
2638
2639 api_cede_notself (aTHX);
2640
2641 ++incede;
2642 while (coro_nready >= incede && api_cede (aTHX))
2643 ;
2644
2645 sv_setsv (sv_activity, &PL_sv_undef);
2646 if (coro_nready >= incede)
2647 {
2648 PUSHMARK (SP);
2649 PUTBACK;
2650 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2651 SPAGAIN;
2652 }
2653
2654 --incede;
2655} 4308}
2656 4309
2657 4310
2658MODULE = Coro::State PACKAGE = PerlIO::cede 4311MODULE = Coro::State PACKAGE = PerlIO::cede
2659 4312
2660BOOT: 4313BOOT:
2661 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4314 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2662 4315
4316
2663MODULE = Coro::State PACKAGE = Coro::Semaphore 4317MODULE = Coro::State PACKAGE = Coro::Semaphore
2664 4318
2665SV * 4319SV *
2666new (SV *klass, SV *count_ = 0) 4320new (SV *klass, SV *count = 0)
2667 CODE: 4321 CODE:
2668{ 4322{
2669 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4323 int semcnt = 1;
2670 AV *av = newAV (); 4324
2671 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4325 if (count)
2672 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4326 {
4327 SvGETMAGIC (count);
4328
4329 if (SvOK (count))
4330 semcnt = SvIV (count);
4331 }
4332
4333 RETVAL = sv_bless (
4334 coro_waitarray_new (aTHX_ semcnt),
4335 GvSTASH (CvGV (cv))
4336 );
2673} 4337}
4338 OUTPUT:
4339 RETVAL
4340
4341# helper for Coro::Channel and others
4342SV *
4343_alloc (int count)
4344 CODE:
4345 RETVAL = coro_waitarray_new (aTHX_ count);
2674 OUTPUT: 4346 OUTPUT:
2675 RETVAL 4347 RETVAL
2676 4348
2677SV * 4349SV *
2678count (SV *self) 4350count (SV *self)
… …
2680 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4352 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2681 OUTPUT: 4353 OUTPUT:
2682 RETVAL 4354 RETVAL
2683 4355
2684void 4356void
2685up (SV *self, int adjust = 1) 4357up (SV *self)
2686 ALIAS:
2687 adjust = 1
2688 CODE: 4358 CODE:
2689 coro_semaphore_adjust ((AV *)SvRV (self), ix ? adjust : 1); 4359 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
2690 4360
2691void 4361void
2692down (SV *self) 4362adjust (SV *self, int adjust)
2693 CODE: 4363 CODE:
2694 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 4364 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4365
4366void
4367down (...)
4368 CODE:
4369 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4370
4371void
4372wait (...)
4373 CODE:
4374 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2695 4375
2696void 4376void
2697try (SV *self) 4377try (SV *self)
2698 PPCODE: 4378 PPCODE:
2699{ 4379{
… …
2711 XSRETURN_NO; 4391 XSRETURN_NO;
2712} 4392}
2713 4393
2714void 4394void
2715waiters (SV *self) 4395waiters (SV *self)
2716 CODE: 4396 PPCODE:
2717{ 4397{
2718 AV *av = (AV *)SvRV (self); 4398 AV *av = (AV *)SvRV (self);
4399 int wcount = AvFILLp (av) + 1 - 1;
2719 4400
2720 if (GIMME_V == G_SCALAR) 4401 if (GIMME_V == G_SCALAR)
2721 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4402 XPUSHs (sv_2mortal (newSViv (wcount)));
2722 else 4403 else
2723 { 4404 {
2724 int i; 4405 int i;
2725 EXTEND (SP, AvFILLp (av) + 1 - 1); 4406 EXTEND (SP, wcount);
2726 for (i = 1; i <= AvFILLp (av); ++i) 4407 for (i = 1; i <= wcount; ++i)
2727 PUSHs (newSVsv (AvARRAY (av)[i])); 4408 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2728 } 4409 }
2729} 4410}
2730 4411
4412MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4413
4414void
4415_may_delete (SV *sem, int count, unsigned int extra_refs)
4416 PPCODE:
4417{
4418 AV *av = (AV *)SvRV (sem);
4419
4420 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4421 && AvFILLp (av) == 0 /* no waiters, just count */
4422 && SvIV (AvARRAY (av)[0]) == count)
4423 XSRETURN_YES;
4424
4425 XSRETURN_NO;
4426}
4427
4428MODULE = Coro::State PACKAGE = Coro::Signal
4429
4430SV *
4431new (SV *klass)
4432 CODE:
4433 RETVAL = sv_bless (
4434 coro_waitarray_new (aTHX_ 0),
4435 GvSTASH (CvGV (cv))
4436 );
4437 OUTPUT:
4438 RETVAL
4439
4440void
4441wait (...)
4442 CODE:
4443 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4444
4445void
4446broadcast (SV *self)
4447 CODE:
4448{
4449 AV *av = (AV *)SvRV (self);
4450 coro_signal_wake (aTHX_ av, AvFILLp (av));
4451}
4452
4453void
4454send (SV *self)
4455 CODE:
4456{
4457 AV *av = (AV *)SvRV (self);
4458
4459 if (AvFILLp (av))
4460 coro_signal_wake (aTHX_ av, 1);
4461 else
4462 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4463}
4464
4465IV
4466awaited (SV *self)
4467 CODE:
4468 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4469 OUTPUT:
4470 RETVAL
4471
4472
4473MODULE = Coro::State PACKAGE = Coro::AnyEvent
4474
4475BOOT:
4476 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4477
4478void
4479_schedule (...)
4480 CODE:
4481{
4482 static int incede;
4483
4484 api_cede_notself (aTHX);
4485
4486 ++incede;
4487 while (coro_nready >= incede && api_cede (aTHX))
4488 ;
4489
4490 sv_setsv (sv_activity, &PL_sv_undef);
4491 if (coro_nready >= incede)
4492 {
4493 PUSHMARK (SP);
4494 PUTBACK;
4495 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4496 }
4497
4498 --incede;
4499}
4500
4501
4502MODULE = Coro::State PACKAGE = Coro::AIO
4503
4504void
4505_register (char *target, char *proto, SV *req)
4506 CODE:
4507{
4508 SV *req_cv = s_get_cv_croak (req);
4509 /* newXSproto doesn't return the CV on 5.8 */
4510 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4511 sv_setpv ((SV *)slf_cv, proto);
4512 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4513}
4514
4515MODULE = Coro::State PACKAGE = Coro::Select
4516
4517void
4518patch_pp_sselect ()
4519 CODE:
4520 if (!coro_old_pp_sselect)
4521 {
4522 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4523 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4524 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4525 }
4526
4527void
4528unpatch_pp_sselect ()
4529 CODE:
4530 if (coro_old_pp_sselect)
4531 {
4532 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4533 coro_old_pp_sselect = 0;
4534 }
4535
4536MODULE = Coro::State PACKAGE = Coro::Util
4537
4538void
4539_exit (int code)
4540 CODE:
4541 _exit (code);
4542
4543NV
4544time ()
4545 CODE:
4546 RETVAL = nvtime (aTHX);
4547 OUTPUT:
4548 RETVAL
4549
4550NV
4551gettimeofday ()
4552 PPCODE:
4553{
4554 UV tv [2];
4555 u2time (aTHX_ tv);
4556 EXTEND (SP, 2);
4557 PUSHs (sv_2mortal (newSVuv (tv [0])));
4558 PUSHs (sv_2mortal (newSVuv (tv [1])));
4559}
4560

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