1 |
#include "libcoro/coro.c" |
2 |
|
3 |
#define PERL_NO_GET_CONTEXT |
4 |
#define PERL_EXT |
5 |
|
6 |
#include "EXTERN.h" |
7 |
#include "perl.h" |
8 |
#include "XSUB.h" |
9 |
#include "perliol.h" |
10 |
|
11 |
#include "schmorp.h" |
12 |
|
13 |
#include <stdio.h> |
14 |
#include <errno.h> |
15 |
#include <assert.h> |
16 |
|
17 |
#ifdef WIN32 |
18 |
# undef setjmp |
19 |
# undef longjmp |
20 |
# undef _exit |
21 |
# define setjmp _setjmp /* deep magic */ |
22 |
#else |
23 |
# include <inttypes.h> /* most portable stdint.h */ |
24 |
#endif |
25 |
|
26 |
#ifdef HAVE_MMAP |
27 |
# include <unistd.h> |
28 |
# include <sys/mman.h> |
29 |
# ifndef MAP_ANONYMOUS |
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# ifdef MAP_ANON |
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# define MAP_ANONYMOUS MAP_ANON |
32 |
# else |
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# undef HAVE_MMAP |
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# endif |
35 |
# endif |
36 |
# include <limits.h> |
37 |
# ifndef PAGESIZE |
38 |
# define PAGESIZE pagesize |
39 |
# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
40 |
static long pagesize; |
41 |
# else |
42 |
# define BOOT_PAGESIZE (void)0 |
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# endif |
44 |
#else |
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# 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 */ |
54 |
static int cctx_max_idle = 4; |
55 |
|
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#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
57 |
# undef CORO_STACKGUARD |
58 |
#endif |
59 |
|
60 |
#ifndef CORO_STACKGUARD |
61 |
# define CORO_STACKGUARD 0 |
62 |
#endif |
63 |
|
64 |
/* prefer perl internal functions over our own? */ |
65 |
#ifndef CORO_PREFER_PERL_FUNCTIONS |
66 |
# define CORO_PREFER_PERL_FUNCTIONS 0 |
67 |
#endif |
68 |
|
69 |
/* The next macros try to return the current stack pointer, in an as |
70 |
* portable way as possible. */ |
71 |
#if __GNUC__ >= 4 |
72 |
# define dSTACKLEVEL int stacklevel_dummy |
73 |
# define STACKLEVEL __builtin_frame_address (0) |
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#else |
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# define dSTACKLEVEL volatile void *stacklevel |
76 |
# define STACKLEVEL ((void *)&stacklevel) |
77 |
#endif |
78 |
|
79 |
#define IN_DESTRUCT PL_dirty |
80 |
|
81 |
#if __GNUC__ >= 3 |
82 |
# define attribute(x) __attribute__(x) |
83 |
# define expect(expr,value) __builtin_expect ((expr), (value)) |
84 |
# define INLINE static inline |
85 |
#else |
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# define attribute(x) |
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# define expect(expr,value) (expr) |
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# define INLINE static |
89 |
#endif |
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|
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#define expect_false(expr) expect ((expr) != 0, 0) |
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#define expect_true(expr) expect ((expr) != 0, 1) |
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|
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#define NOINLINE attribute ((noinline)) |
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|
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#include "CoroAPI.h" |
97 |
#define GCoroAPI (&coroapi) /* very sneaky */ |
98 |
|
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#ifdef USE_ITHREADS |
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# if CORO_PTHREAD |
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static void *coro_thx; |
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# endif |
103 |
#endif |
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|
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#ifdef __linux |
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# include <time.h> /* for timespec */ |
107 |
# include <syscall.h> /* for SYS_* */ |
108 |
# ifdef SYS_clock_gettime |
109 |
# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
110 |
# define CORO_CLOCK_MONOTONIC 1 |
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# define CORO_CLOCK_THREAD_CPUTIME_ID 3 |
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# endif |
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#endif |
114 |
|
115 |
static double (*nvtime)(); /* so why doesn't it take void? */ |
116 |
static void (*u2time)(pTHX_ UV ret[2]); |
117 |
|
118 |
/* we hijack an hopefully unused CV flag for our purposes */ |
119 |
#define CVf_SLF 0x4000 |
120 |
static OP *pp_slf (pTHX); |
121 |
|
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static U32 cctx_gen; |
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static size_t cctx_stacksize = CORO_STACKSIZE; |
124 |
static struct CoroAPI coroapi; |
125 |
static AV *main_mainstack; /* used to differentiate between $main and others */ |
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static JMPENV *main_top_env; |
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static HV *coro_state_stash, *coro_stash; |
128 |
static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
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|
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static AV *av_destroy; /* destruction queue */ |
131 |
static SV *sv_manager; /* the manager coro */ |
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static SV *sv_idle; /* $Coro::idle */ |
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|
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static GV *irsgv; /* $/ */ |
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static GV *stdoutgv; /* *STDOUT */ |
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static SV *rv_diehook; |
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static SV *rv_warnhook; |
138 |
static HV *hv_sig; /* %SIG */ |
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|
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/* async_pool helper stuff */ |
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static SV *sv_pool_rss; |
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static SV *sv_pool_size; |
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static SV *sv_async_pool_idle; /* description string */ |
144 |
static AV *av_async_pool; /* idle pool */ |
145 |
static SV *sv_Coro; /* class string */ |
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static CV *cv_pool_handler; |
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static CV *cv_coro_state_new; |
148 |
|
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/* Coro::AnyEvent */ |
150 |
static SV *sv_activity; |
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|
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/* enable processtime/realtime profiling */ |
153 |
static char enable_times; |
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typedef U32 coro_ts[2]; |
155 |
static coro_ts time_real, time_cpu; |
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static char times_valid; |
157 |
|
158 |
static struct coro_cctx *cctx_first; |
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static int cctx_count, cctx_idle; |
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|
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enum { |
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CC_MAPPED = 0x01, |
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CC_NOREUSE = 0x02, /* throw this away after tracing */ |
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CC_TRACE = 0x04, |
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CC_TRACE_SUB = 0x08, /* trace sub calls */ |
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CC_TRACE_LINE = 0x10, /* trace each statement */ |
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CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
168 |
}; |
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|
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/* this is a structure representing a c-level coroutine */ |
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typedef struct coro_cctx |
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{ |
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struct coro_cctx *next; |
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|
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/* the stack */ |
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void *sptr; |
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size_t ssize; |
178 |
|
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/* cpu state */ |
180 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
181 |
JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
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JMPENV *top_env; |
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coro_context cctx; |
184 |
|
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U32 gen; |
186 |
#if CORO_USE_VALGRIND |
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int valgrind_id; |
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#endif |
189 |
unsigned char flags; |
190 |
} coro_cctx; |
191 |
|
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coro_cctx *cctx_current; /* the currently running cctx */ |
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|
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/*****************************************************************************/ |
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|
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enum { |
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CF_RUNNING = 0x0001, /* coroutine is running */ |
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CF_READY = 0x0002, /* coroutine is ready */ |
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CF_NEW = 0x0004, /* has never been switched to */ |
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CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
201 |
CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */ |
202 |
}; |
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|
204 |
/* the structure where most of the perl state is stored, overlaid on the cxstack */ |
205 |
typedef struct |
206 |
{ |
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SV *defsv; |
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AV *defav; |
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SV *errsv; |
210 |
SV *irsgv; |
211 |
HV *hinthv; |
212 |
#define VAR(name,type) type name; |
213 |
# include "state.h" |
214 |
#undef VAR |
215 |
} perl_slots; |
216 |
|
217 |
#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
218 |
|
219 |
/* this is a structure representing a perl-level coroutine */ |
220 |
struct coro { |
221 |
/* the C coroutine allocated to this perl coroutine, if any */ |
222 |
coro_cctx *cctx; |
223 |
|
224 |
/* ready queue */ |
225 |
struct coro *next_ready; |
226 |
|
227 |
/* state data */ |
228 |
struct CoroSLF slf_frame; /* saved slf frame */ |
229 |
AV *mainstack; |
230 |
perl_slots *slot; /* basically the saved sp */ |
231 |
|
232 |
CV *startcv; /* the CV to execute */ |
233 |
AV *args; /* data associated with this coroutine (initial args) */ |
234 |
int refcnt; /* coroutines are refcounted, yes */ |
235 |
int flags; /* CF_ flags */ |
236 |
HV *hv; /* the perl hash associated with this coro, if any */ |
237 |
void (*on_destroy)(pTHX_ struct coro *coro); |
238 |
|
239 |
/* statistics */ |
240 |
int usecount; /* number of transfers to this coro */ |
241 |
|
242 |
/* coro process data */ |
243 |
int prio; |
244 |
SV *except; /* exception to be thrown */ |
245 |
SV *rouse_cb; |
246 |
|
247 |
/* async_pool */ |
248 |
SV *saved_deffh; |
249 |
SV *invoke_cb; |
250 |
AV *invoke_av; |
251 |
|
252 |
/* on_enter/on_leave */ |
253 |
AV *on_enter; |
254 |
AV *on_leave; |
255 |
|
256 |
/* times */ |
257 |
coro_ts t_cpu, t_real; |
258 |
|
259 |
/* linked list */ |
260 |
struct coro *next, *prev; |
261 |
}; |
262 |
|
263 |
typedef struct coro *Coro__State; |
264 |
typedef struct coro *Coro__State_or_hashref; |
265 |
|
266 |
/* the following variables are effectively part of the perl context */ |
267 |
/* and get copied between struct coro and these variables */ |
268 |
/* the mainr easonw e don't support windows process emulation */ |
269 |
static struct CoroSLF slf_frame; /* the current slf frame */ |
270 |
|
271 |
/** Coro ********************************************************************/ |
272 |
|
273 |
#define CORO_PRIO_MAX 3 |
274 |
#define CORO_PRIO_HIGH 1 |
275 |
#define CORO_PRIO_NORMAL 0 |
276 |
#define CORO_PRIO_LOW -1 |
277 |
#define CORO_PRIO_IDLE -3 |
278 |
#define CORO_PRIO_MIN -4 |
279 |
|
280 |
/* for Coro.pm */ |
281 |
static SV *coro_current; |
282 |
static SV *coro_readyhook; |
283 |
static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */ |
284 |
static CV *cv_coro_run, *cv_coro_terminate; |
285 |
static struct coro *coro_first; |
286 |
#define coro_nready coroapi.nready |
287 |
|
288 |
/** Coro::Select ************************************************************/ |
289 |
|
290 |
static OP *(*coro_old_pp_sselect) (pTHX); |
291 |
static SV *coro_select_select; |
292 |
|
293 |
/* horrible hack, but if it works... */ |
294 |
static OP * |
295 |
coro_pp_sselect (aTHX) |
296 |
{ |
297 |
dSP; |
298 |
PUSHMARK (SP - 4); /* fake argument list */ |
299 |
XPUSHs (coro_select_select); |
300 |
PUTBACK; |
301 |
|
302 |
/* entersub is an UNOP, select a LISTOP... keep your fingers crossed */ |
303 |
PL_op->op_flags |= OPf_STACKED; |
304 |
PL_op->op_private = 0; |
305 |
return PL_ppaddr [OP_ENTERSUB](aTHX); |
306 |
} |
307 |
|
308 |
/** lowlevel stuff **********************************************************/ |
309 |
|
310 |
static SV * |
311 |
coro_get_sv (pTHX_ const char *name, int create) |
312 |
{ |
313 |
#if PERL_VERSION_ATLEAST (5,10,0) |
314 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
315 |
get_sv (name, create); |
316 |
#endif |
317 |
return get_sv (name, create); |
318 |
} |
319 |
|
320 |
static AV * |
321 |
coro_get_av (pTHX_ const char *name, int create) |
322 |
{ |
323 |
#if PERL_VERSION_ATLEAST (5,10,0) |
324 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
325 |
get_av (name, create); |
326 |
#endif |
327 |
return get_av (name, create); |
328 |
} |
329 |
|
330 |
static HV * |
331 |
coro_get_hv (pTHX_ const char *name, int create) |
332 |
{ |
333 |
#if PERL_VERSION_ATLEAST (5,10,0) |
334 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
335 |
get_hv (name, create); |
336 |
#endif |
337 |
return get_hv (name, create); |
338 |
} |
339 |
|
340 |
INLINE void |
341 |
coro_times_update () |
342 |
{ |
343 |
#ifdef coro_clock_gettime |
344 |
struct timespec ts; |
345 |
|
346 |
ts.tv_sec = ts.tv_nsec = 0; |
347 |
coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts); |
348 |
time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec; |
349 |
|
350 |
ts.tv_sec = ts.tv_nsec = 0; |
351 |
coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts); |
352 |
time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec; |
353 |
#else |
354 |
dTHX; |
355 |
UV tv[2]; |
356 |
|
357 |
u2time (aTHX_ tv); |
358 |
time_real [0] = tv [0]; |
359 |
time_real [1] = tv [1] * 1000; |
360 |
#endif |
361 |
} |
362 |
|
363 |
INLINE void |
364 |
coro_times_add (struct coro *c) |
365 |
{ |
366 |
c->t_real [1] += time_real [1]; |
367 |
if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; } |
368 |
c->t_real [0] += time_real [0]; |
369 |
|
370 |
c->t_cpu [1] += time_cpu [1]; |
371 |
if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; } |
372 |
c->t_cpu [0] += time_cpu [0]; |
373 |
} |
374 |
|
375 |
INLINE void |
376 |
coro_times_sub (struct coro *c) |
377 |
{ |
378 |
if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; } |
379 |
c->t_real [1] -= time_real [1]; |
380 |
c->t_real [0] -= time_real [0]; |
381 |
|
382 |
if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; } |
383 |
c->t_cpu [1] -= time_cpu [1]; |
384 |
c->t_cpu [0] -= time_cpu [0]; |
385 |
} |
386 |
|
387 |
/*****************************************************************************/ |
388 |
/* magic glue */ |
389 |
|
390 |
#define CORO_MAGIC_type_cv 26 |
391 |
#define CORO_MAGIC_type_state PERL_MAGIC_ext |
392 |
|
393 |
#define CORO_MAGIC_NN(sv, type) \ |
394 |
(expect_true (SvMAGIC (sv)->mg_type == type) \ |
395 |
? SvMAGIC (sv) \ |
396 |
: mg_find (sv, type)) |
397 |
|
398 |
#define CORO_MAGIC(sv, type) \ |
399 |
(expect_true (SvMAGIC (sv)) \ |
400 |
? CORO_MAGIC_NN (sv, type) \ |
401 |
: 0) |
402 |
|
403 |
#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
404 |
#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) |
405 |
|
406 |
INLINE struct coro * |
407 |
SvSTATE_ (pTHX_ SV *coro) |
408 |
{ |
409 |
HV *stash; |
410 |
MAGIC *mg; |
411 |
|
412 |
if (SvROK (coro)) |
413 |
coro = SvRV (coro); |
414 |
|
415 |
if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
416 |
croak ("Coro::State object required"); |
417 |
|
418 |
stash = SvSTASH (coro); |
419 |
if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
420 |
{ |
421 |
/* very slow, but rare, check */ |
422 |
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
423 |
croak ("Coro::State object required"); |
424 |
} |
425 |
|
426 |
mg = CORO_MAGIC_state (coro); |
427 |
return (struct coro *)mg->mg_ptr; |
428 |
} |
429 |
|
430 |
#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
431 |
|
432 |
/* faster than SvSTATE, but expects a coroutine hv */ |
433 |
#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr) |
434 |
#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
435 |
|
436 |
/*****************************************************************************/ |
437 |
/* padlist management and caching */ |
438 |
|
439 |
static AV * |
440 |
coro_derive_padlist (pTHX_ CV *cv) |
441 |
{ |
442 |
AV *padlist = CvPADLIST (cv); |
443 |
AV *newpadlist, *newpad; |
444 |
|
445 |
newpadlist = newAV (); |
446 |
AvREAL_off (newpadlist); |
447 |
#if PERL_VERSION_ATLEAST (5,10,0) |
448 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
449 |
#else |
450 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
451 |
#endif |
452 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
453 |
--AvFILLp (padlist); |
454 |
|
455 |
av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0])); |
456 |
av_store (newpadlist, 1, (SV *)newpad); |
457 |
|
458 |
return newpadlist; |
459 |
} |
460 |
|
461 |
static void |
462 |
free_padlist (pTHX_ AV *padlist) |
463 |
{ |
464 |
/* may be during global destruction */ |
465 |
if (!IN_DESTRUCT) |
466 |
{ |
467 |
I32 i = AvFILLp (padlist); |
468 |
|
469 |
while (i > 0) /* special-case index 0 */ |
470 |
{ |
471 |
/* we try to be extra-careful here */ |
472 |
AV *av = (AV *)AvARRAY (padlist)[i--]; |
473 |
I32 j = AvFILLp (av); |
474 |
|
475 |
while (j >= 0) |
476 |
SvREFCNT_dec (AvARRAY (av)[j--]); |
477 |
|
478 |
AvFILLp (av) = -1; |
479 |
SvREFCNT_dec (av); |
480 |
} |
481 |
|
482 |
SvREFCNT_dec (AvARRAY (padlist)[0]); |
483 |
|
484 |
AvFILLp (padlist) = -1; |
485 |
SvREFCNT_dec ((SV*)padlist); |
486 |
} |
487 |
} |
488 |
|
489 |
static int |
490 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
491 |
{ |
492 |
AV *padlist; |
493 |
AV *av = (AV *)mg->mg_obj; |
494 |
|
495 |
/* perl manages to free our internal AV and _then_ call us */ |
496 |
if (IN_DESTRUCT) |
497 |
return 0; |
498 |
|
499 |
/* casting is fun. */ |
500 |
while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
501 |
free_padlist (aTHX_ padlist); |
502 |
|
503 |
SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
504 |
|
505 |
return 0; |
506 |
} |
507 |
|
508 |
static MGVTBL coro_cv_vtbl = { |
509 |
0, 0, 0, 0, |
510 |
coro_cv_free |
511 |
}; |
512 |
|
513 |
/* the next two functions merely cache the padlists */ |
514 |
static void |
515 |
get_padlist (pTHX_ CV *cv) |
516 |
{ |
517 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
518 |
AV *av; |
519 |
|
520 |
if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
521 |
CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
522 |
else |
523 |
{ |
524 |
#if CORO_PREFER_PERL_FUNCTIONS |
525 |
/* this is probably cleaner? but also slower! */ |
526 |
/* in practise, it seems to be less stable */ |
527 |
CV *cp = Perl_cv_clone (aTHX_ cv); |
528 |
CvPADLIST (cv) = CvPADLIST (cp); |
529 |
CvPADLIST (cp) = 0; |
530 |
SvREFCNT_dec (cp); |
531 |
#else |
532 |
CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); |
533 |
#endif |
534 |
} |
535 |
} |
536 |
|
537 |
static void |
538 |
put_padlist (pTHX_ CV *cv) |
539 |
{ |
540 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
541 |
AV *av; |
542 |
|
543 |
if (expect_false (!mg)) |
544 |
mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
545 |
|
546 |
av = (AV *)mg->mg_obj; |
547 |
|
548 |
if (expect_false (AvFILLp (av) >= AvMAX (av))) |
549 |
av_extend (av, AvFILLp (av) + 1); |
550 |
|
551 |
AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
552 |
} |
553 |
|
554 |
/** load & save, init *******************************************************/ |
555 |
|
556 |
static void |
557 |
on_enterleave_call (pTHX_ SV *cb); |
558 |
|
559 |
static void |
560 |
load_perl (pTHX_ Coro__State c) |
561 |
{ |
562 |
perl_slots *slot = c->slot; |
563 |
c->slot = 0; |
564 |
|
565 |
PL_mainstack = c->mainstack; |
566 |
|
567 |
GvSV (PL_defgv) = slot->defsv; |
568 |
GvAV (PL_defgv) = slot->defav; |
569 |
GvSV (PL_errgv) = slot->errsv; |
570 |
GvSV (irsgv) = slot->irsgv; |
571 |
GvHV (PL_hintgv) = slot->hinthv; |
572 |
|
573 |
#define VAR(name,type) PL_ ## name = slot->name; |
574 |
# include "state.h" |
575 |
#undef VAR |
576 |
|
577 |
{ |
578 |
dSP; |
579 |
|
580 |
CV *cv; |
581 |
|
582 |
/* now do the ugly restore mess */ |
583 |
while (expect_true (cv = (CV *)POPs)) |
584 |
{ |
585 |
put_padlist (aTHX_ cv); /* mark this padlist as available */ |
586 |
CvDEPTH (cv) = PTR2IV (POPs); |
587 |
CvPADLIST (cv) = (AV *)POPs; |
588 |
} |
589 |
|
590 |
PUTBACK; |
591 |
} |
592 |
|
593 |
slf_frame = c->slf_frame; |
594 |
CORO_THROW = c->except; |
595 |
|
596 |
if (expect_false (enable_times)) |
597 |
{ |
598 |
if (expect_false (!times_valid)) |
599 |
coro_times_update (); |
600 |
|
601 |
coro_times_sub (c); |
602 |
} |
603 |
|
604 |
if (expect_false (c->on_enter)) |
605 |
{ |
606 |
int i; |
607 |
|
608 |
for (i = 0; i <= AvFILLp (c->on_enter); ++i) |
609 |
on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]); |
610 |
} |
611 |
} |
612 |
|
613 |
static void |
614 |
save_perl (pTHX_ Coro__State c) |
615 |
{ |
616 |
if (expect_false (c->on_leave)) |
617 |
{ |
618 |
int i; |
619 |
|
620 |
for (i = AvFILLp (c->on_leave); i >= 0; --i) |
621 |
on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]); |
622 |
} |
623 |
|
624 |
times_valid = 0; |
625 |
|
626 |
if (expect_false (enable_times)) |
627 |
{ |
628 |
coro_times_update (); times_valid = 1; |
629 |
coro_times_add (c); |
630 |
} |
631 |
|
632 |
c->except = CORO_THROW; |
633 |
c->slf_frame = slf_frame; |
634 |
|
635 |
{ |
636 |
dSP; |
637 |
I32 cxix = cxstack_ix; |
638 |
PERL_CONTEXT *ccstk = cxstack; |
639 |
PERL_SI *top_si = PL_curstackinfo; |
640 |
|
641 |
/* |
642 |
* the worst thing you can imagine happens first - we have to save |
643 |
* (and reinitialize) all cv's in the whole callchain :( |
644 |
*/ |
645 |
|
646 |
XPUSHs (Nullsv); |
647 |
/* this loop was inspired by pp_caller */ |
648 |
for (;;) |
649 |
{ |
650 |
while (expect_true (cxix >= 0)) |
651 |
{ |
652 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
653 |
|
654 |
if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT)) |
655 |
{ |
656 |
CV *cv = cx->blk_sub.cv; |
657 |
|
658 |
if (expect_true (CvDEPTH (cv))) |
659 |
{ |
660 |
EXTEND (SP, 3); |
661 |
PUSHs ((SV *)CvPADLIST (cv)); |
662 |
PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
663 |
PUSHs ((SV *)cv); |
664 |
|
665 |
CvDEPTH (cv) = 0; |
666 |
get_padlist (aTHX_ cv); |
667 |
} |
668 |
} |
669 |
} |
670 |
|
671 |
if (expect_true (top_si->si_type == PERLSI_MAIN)) |
672 |
break; |
673 |
|
674 |
top_si = top_si->si_prev; |
675 |
ccstk = top_si->si_cxstack; |
676 |
cxix = top_si->si_cxix; |
677 |
} |
678 |
|
679 |
PUTBACK; |
680 |
} |
681 |
|
682 |
/* allocate some space on the context stack for our purposes */ |
683 |
/* we manually unroll here, as usually 2 slots is enough */ |
684 |
if (SLOT_COUNT >= 1) CXINC; |
685 |
if (SLOT_COUNT >= 2) CXINC; |
686 |
if (SLOT_COUNT >= 3) CXINC; |
687 |
{ |
688 |
unsigned int i; |
689 |
for (i = 3; i < SLOT_COUNT; ++i) |
690 |
CXINC; |
691 |
} |
692 |
cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
693 |
|
694 |
c->mainstack = PL_mainstack; |
695 |
|
696 |
{ |
697 |
perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
698 |
|
699 |
slot->defav = GvAV (PL_defgv); |
700 |
slot->defsv = DEFSV; |
701 |
slot->errsv = ERRSV; |
702 |
slot->irsgv = GvSV (irsgv); |
703 |
slot->hinthv = GvHV (PL_hintgv); |
704 |
|
705 |
#define VAR(name,type) slot->name = PL_ ## name; |
706 |
# include "state.h" |
707 |
#undef VAR |
708 |
} |
709 |
} |
710 |
|
711 |
/* |
712 |
* allocate various perl stacks. This is almost an exact copy |
713 |
* of perl.c:init_stacks, except that it uses less memory |
714 |
* on the (sometimes correct) assumption that coroutines do |
715 |
* not usually need a lot of stackspace. |
716 |
*/ |
717 |
#if CORO_PREFER_PERL_FUNCTIONS |
718 |
# define coro_init_stacks(thx) init_stacks () |
719 |
#else |
720 |
static void |
721 |
coro_init_stacks (pTHX) |
722 |
{ |
723 |
PL_curstackinfo = new_stackinfo(32, 8); |
724 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
725 |
PL_curstack = PL_curstackinfo->si_stack; |
726 |
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
727 |
|
728 |
PL_stack_base = AvARRAY(PL_curstack); |
729 |
PL_stack_sp = PL_stack_base; |
730 |
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
731 |
|
732 |
New(50,PL_tmps_stack,32,SV*); |
733 |
PL_tmps_floor = -1; |
734 |
PL_tmps_ix = -1; |
735 |
PL_tmps_max = 32; |
736 |
|
737 |
New(54,PL_markstack,16,I32); |
738 |
PL_markstack_ptr = PL_markstack; |
739 |
PL_markstack_max = PL_markstack + 16; |
740 |
|
741 |
#ifdef SET_MARK_OFFSET |
742 |
SET_MARK_OFFSET; |
743 |
#endif |
744 |
|
745 |
New(54,PL_scopestack,8,I32); |
746 |
PL_scopestack_ix = 0; |
747 |
PL_scopestack_max = 8; |
748 |
|
749 |
New(54,PL_savestack,24,ANY); |
750 |
PL_savestack_ix = 0; |
751 |
PL_savestack_max = 24; |
752 |
|
753 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
754 |
New(54,PL_retstack,4,OP*); |
755 |
PL_retstack_ix = 0; |
756 |
PL_retstack_max = 4; |
757 |
#endif |
758 |
} |
759 |
#endif |
760 |
|
761 |
/* |
762 |
* destroy the stacks, the callchain etc... |
763 |
*/ |
764 |
static void |
765 |
coro_destruct_stacks (pTHX) |
766 |
{ |
767 |
while (PL_curstackinfo->si_next) |
768 |
PL_curstackinfo = PL_curstackinfo->si_next; |
769 |
|
770 |
while (PL_curstackinfo) |
771 |
{ |
772 |
PERL_SI *p = PL_curstackinfo->si_prev; |
773 |
|
774 |
if (!IN_DESTRUCT) |
775 |
SvREFCNT_dec (PL_curstackinfo->si_stack); |
776 |
|
777 |
Safefree (PL_curstackinfo->si_cxstack); |
778 |
Safefree (PL_curstackinfo); |
779 |
PL_curstackinfo = p; |
780 |
} |
781 |
|
782 |
Safefree (PL_tmps_stack); |
783 |
Safefree (PL_markstack); |
784 |
Safefree (PL_scopestack); |
785 |
Safefree (PL_savestack); |
786 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
787 |
Safefree (PL_retstack); |
788 |
#endif |
789 |
} |
790 |
|
791 |
#define CORO_RSS \ |
792 |
rss += sizeof (SYM (curstackinfo)); \ |
793 |
rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \ |
794 |
rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \ |
795 |
rss += SYM (tmps_max) * sizeof (SV *); \ |
796 |
rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \ |
797 |
rss += SYM (scopestack_max) * sizeof (I32); \ |
798 |
rss += SYM (savestack_max) * sizeof (ANY); |
799 |
|
800 |
static size_t |
801 |
coro_rss (pTHX_ struct coro *coro) |
802 |
{ |
803 |
size_t rss = sizeof (*coro); |
804 |
|
805 |
if (coro->mainstack) |
806 |
{ |
807 |
if (coro->flags & CF_RUNNING) |
808 |
{ |
809 |
#define SYM(sym) PL_ ## sym |
810 |
CORO_RSS; |
811 |
#undef SYM |
812 |
} |
813 |
else |
814 |
{ |
815 |
#define SYM(sym) coro->slot->sym |
816 |
CORO_RSS; |
817 |
#undef SYM |
818 |
} |
819 |
} |
820 |
|
821 |
return rss; |
822 |
} |
823 |
|
824 |
/** coroutine stack handling ************************************************/ |
825 |
|
826 |
static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
827 |
static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
828 |
static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
829 |
|
830 |
/* apparently < 5.8.8 */ |
831 |
#ifndef MgPV_nolen_const |
832 |
#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
833 |
SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
834 |
(const char*)(mg)->mg_ptr) |
835 |
#endif |
836 |
|
837 |
/* |
838 |
* This overrides the default magic get method of %SIG elements. |
839 |
* The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
840 |
* and instead of trying to save and restore the hash elements, we just provide |
841 |
* readback here. |
842 |
*/ |
843 |
static int |
844 |
coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
845 |
{ |
846 |
const char *s = MgPV_nolen_const (mg); |
847 |
|
848 |
if (*s == '_') |
849 |
{ |
850 |
SV **svp = 0; |
851 |
|
852 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
853 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
854 |
|
855 |
if (svp) |
856 |
{ |
857 |
sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
858 |
return 0; |
859 |
} |
860 |
} |
861 |
|
862 |
return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
863 |
} |
864 |
|
865 |
static int |
866 |
coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
867 |
{ |
868 |
const char *s = MgPV_nolen_const (mg); |
869 |
|
870 |
if (*s == '_') |
871 |
{ |
872 |
SV **svp = 0; |
873 |
|
874 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
875 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
876 |
|
877 |
if (svp) |
878 |
{ |
879 |
SV *old = *svp; |
880 |
*svp = 0; |
881 |
SvREFCNT_dec (old); |
882 |
return 0; |
883 |
} |
884 |
} |
885 |
|
886 |
return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
887 |
} |
888 |
|
889 |
static int |
890 |
coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
891 |
{ |
892 |
const char *s = MgPV_nolen_const (mg); |
893 |
|
894 |
if (*s == '_') |
895 |
{ |
896 |
SV **svp = 0; |
897 |
|
898 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
899 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
900 |
|
901 |
if (svp) |
902 |
{ |
903 |
SV *old = *svp; |
904 |
*svp = SvOK (sv) ? newSVsv (sv) : 0; |
905 |
SvREFCNT_dec (old); |
906 |
return 0; |
907 |
} |
908 |
} |
909 |
|
910 |
return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
911 |
} |
912 |
|
913 |
static void |
914 |
prepare_nop (pTHX_ struct coro_transfer_args *ta) |
915 |
{ |
916 |
/* kind of mega-hacky, but works */ |
917 |
ta->next = ta->prev = (struct coro *)ta; |
918 |
} |
919 |
|
920 |
static int |
921 |
slf_check_nop (pTHX_ struct CoroSLF *frame) |
922 |
{ |
923 |
return 0; |
924 |
} |
925 |
|
926 |
static int |
927 |
slf_check_repeat (pTHX_ struct CoroSLF *frame) |
928 |
{ |
929 |
return 1; |
930 |
} |
931 |
|
932 |
static UNOP coro_setup_op; |
933 |
|
934 |
static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
935 |
coro_setup (pTHX_ struct coro *coro) |
936 |
{ |
937 |
/* |
938 |
* emulate part of the perl startup here. |
939 |
*/ |
940 |
coro_init_stacks (aTHX); |
941 |
|
942 |
PL_runops = RUNOPS_DEFAULT; |
943 |
PL_curcop = &PL_compiling; |
944 |
PL_in_eval = EVAL_NULL; |
945 |
PL_comppad = 0; |
946 |
PL_comppad_name = 0; |
947 |
PL_comppad_name_fill = 0; |
948 |
PL_comppad_name_floor = 0; |
949 |
PL_curpm = 0; |
950 |
PL_curpad = 0; |
951 |
PL_localizing = 0; |
952 |
PL_dirty = 0; |
953 |
PL_restartop = 0; |
954 |
#if PERL_VERSION_ATLEAST (5,10,0) |
955 |
PL_parser = 0; |
956 |
#endif |
957 |
PL_hints = 0; |
958 |
|
959 |
/* recreate the die/warn hooks */ |
960 |
PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
961 |
PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
962 |
|
963 |
GvSV (PL_defgv) = newSV (0); |
964 |
GvAV (PL_defgv) = coro->args; coro->args = 0; |
965 |
GvSV (PL_errgv) = newSV (0); |
966 |
GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
967 |
GvHV (PL_hintgv) = 0; |
968 |
PL_rs = newSVsv (GvSV (irsgv)); |
969 |
PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
970 |
|
971 |
{ |
972 |
dSP; |
973 |
UNOP myop; |
974 |
|
975 |
Zero (&myop, 1, UNOP); |
976 |
myop.op_next = Nullop; |
977 |
myop.op_type = OP_ENTERSUB; |
978 |
myop.op_flags = OPf_WANT_VOID; |
979 |
|
980 |
PUSHMARK (SP); |
981 |
PUSHs ((SV *)coro->startcv); |
982 |
PUTBACK; |
983 |
PL_op = (OP *)&myop; |
984 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
985 |
} |
986 |
|
987 |
/* this newly created coroutine might be run on an existing cctx which most |
988 |
* likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
989 |
*/ |
990 |
slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
991 |
slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
992 |
|
993 |
/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ |
994 |
coro_setup_op.op_next = PL_op; |
995 |
coro_setup_op.op_type = OP_ENTERSUB; |
996 |
coro_setup_op.op_ppaddr = pp_slf; |
997 |
/* no flags etc. required, as an init function won't be called */ |
998 |
|
999 |
PL_op = (OP *)&coro_setup_op; |
1000 |
|
1001 |
/* copy throw, in case it was set before coro_setup */ |
1002 |
CORO_THROW = coro->except; |
1003 |
|
1004 |
if (expect_false (enable_times)) |
1005 |
{ |
1006 |
coro_times_update (); |
1007 |
coro_times_sub (coro); |
1008 |
} |
1009 |
} |
1010 |
|
1011 |
static void |
1012 |
coro_unwind_stacks (pTHX) |
1013 |
{ |
1014 |
if (!IN_DESTRUCT) |
1015 |
{ |
1016 |
/* restore all saved variables and stuff */ |
1017 |
LEAVE_SCOPE (0); |
1018 |
assert (PL_tmps_floor == -1); |
1019 |
|
1020 |
/* free all temporaries */ |
1021 |
FREETMPS; |
1022 |
assert (PL_tmps_ix == -1); |
1023 |
|
1024 |
/* unwind all extra stacks */ |
1025 |
POPSTACK_TO (PL_mainstack); |
1026 |
|
1027 |
/* unwind main stack */ |
1028 |
dounwind (-1); |
1029 |
} |
1030 |
} |
1031 |
|
1032 |
static void |
1033 |
coro_destruct_perl (pTHX_ struct coro *coro) |
1034 |
{ |
1035 |
SV *svf [9]; |
1036 |
|
1037 |
{ |
1038 |
struct coro *current = SvSTATE_current; |
1039 |
|
1040 |
assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack)); |
1041 |
|
1042 |
save_perl (aTHX_ current); |
1043 |
load_perl (aTHX_ coro); |
1044 |
|
1045 |
coro_unwind_stacks (aTHX); |
1046 |
coro_destruct_stacks (aTHX); |
1047 |
|
1048 |
// now save some sv's to be free'd later |
1049 |
svf [0] = GvSV (PL_defgv); |
1050 |
svf [1] = (SV *)GvAV (PL_defgv); |
1051 |
svf [2] = GvSV (PL_errgv); |
1052 |
svf [3] = (SV *)PL_defoutgv; |
1053 |
svf [4] = PL_rs; |
1054 |
svf [5] = GvSV (irsgv); |
1055 |
svf [6] = (SV *)GvHV (PL_hintgv); |
1056 |
svf [7] = PL_diehook; |
1057 |
svf [8] = PL_warnhook; |
1058 |
assert (9 == sizeof (svf) / sizeof (*svf)); |
1059 |
|
1060 |
load_perl (aTHX_ current); |
1061 |
} |
1062 |
|
1063 |
{ |
1064 |
unsigned int i; |
1065 |
|
1066 |
for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i) |
1067 |
SvREFCNT_dec (svf [i]); |
1068 |
|
1069 |
SvREFCNT_dec (coro->saved_deffh); |
1070 |
SvREFCNT_dec (coro->rouse_cb); |
1071 |
SvREFCNT_dec (coro->invoke_cb); |
1072 |
SvREFCNT_dec (coro->invoke_av); |
1073 |
} |
1074 |
} |
1075 |
|
1076 |
INLINE void |
1077 |
free_coro_mortal (pTHX) |
1078 |
{ |
1079 |
if (expect_true (coro_mortal)) |
1080 |
{ |
1081 |
SvREFCNT_dec (coro_mortal); |
1082 |
coro_mortal = 0; |
1083 |
} |
1084 |
} |
1085 |
|
1086 |
static int |
1087 |
runops_trace (pTHX) |
1088 |
{ |
1089 |
COP *oldcop = 0; |
1090 |
int oldcxix = -2; |
1091 |
|
1092 |
while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
1093 |
{ |
1094 |
PERL_ASYNC_CHECK (); |
1095 |
|
1096 |
if (cctx_current->flags & CC_TRACE_ALL) |
1097 |
{ |
1098 |
if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB) |
1099 |
{ |
1100 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
1101 |
SV **bot, **top; |
1102 |
AV *av = newAV (); /* return values */ |
1103 |
SV **cb; |
1104 |
dSP; |
1105 |
|
1106 |
GV *gv = CvGV (cx->blk_sub.cv); |
1107 |
SV *fullname = sv_2mortal (newSV (0)); |
1108 |
if (isGV (gv)) |
1109 |
gv_efullname3 (fullname, gv, 0); |
1110 |
|
1111 |
bot = PL_stack_base + cx->blk_oldsp + 1; |
1112 |
top = cx->blk_gimme == G_ARRAY ? SP + 1 |
1113 |
: cx->blk_gimme == G_SCALAR ? bot + 1 |
1114 |
: bot; |
1115 |
|
1116 |
av_extend (av, top - bot); |
1117 |
while (bot < top) |
1118 |
av_push (av, SvREFCNT_inc_NN (*bot++)); |
1119 |
|
1120 |
PL_runops = RUNOPS_DEFAULT; |
1121 |
ENTER; |
1122 |
SAVETMPS; |
1123 |
EXTEND (SP, 3); |
1124 |
PUSHMARK (SP); |
1125 |
PUSHs (&PL_sv_no); |
1126 |
PUSHs (fullname); |
1127 |
PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
1128 |
PUTBACK; |
1129 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
1130 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1131 |
SPAGAIN; |
1132 |
FREETMPS; |
1133 |
LEAVE; |
1134 |
PL_runops = runops_trace; |
1135 |
} |
1136 |
|
1137 |
if (oldcop != PL_curcop) |
1138 |
{ |
1139 |
oldcop = PL_curcop; |
1140 |
|
1141 |
if (PL_curcop != &PL_compiling) |
1142 |
{ |
1143 |
SV **cb; |
1144 |
|
1145 |
if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB) |
1146 |
{ |
1147 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
1148 |
|
1149 |
if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
1150 |
{ |
1151 |
dSP; |
1152 |
GV *gv = CvGV (cx->blk_sub.cv); |
1153 |
SV *fullname = sv_2mortal (newSV (0)); |
1154 |
|
1155 |
if (isGV (gv)) |
1156 |
gv_efullname3 (fullname, gv, 0); |
1157 |
|
1158 |
PL_runops = RUNOPS_DEFAULT; |
1159 |
ENTER; |
1160 |
SAVETMPS; |
1161 |
EXTEND (SP, 3); |
1162 |
PUSHMARK (SP); |
1163 |
PUSHs (&PL_sv_yes); |
1164 |
PUSHs (fullname); |
1165 |
PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
1166 |
PUTBACK; |
1167 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
1168 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1169 |
SPAGAIN; |
1170 |
FREETMPS; |
1171 |
LEAVE; |
1172 |
PL_runops = runops_trace; |
1173 |
} |
1174 |
|
1175 |
oldcxix = cxstack_ix; |
1176 |
} |
1177 |
|
1178 |
if (cctx_current->flags & CC_TRACE_LINE) |
1179 |
{ |
1180 |
dSP; |
1181 |
|
1182 |
PL_runops = RUNOPS_DEFAULT; |
1183 |
ENTER; |
1184 |
SAVETMPS; |
1185 |
EXTEND (SP, 3); |
1186 |
PL_runops = RUNOPS_DEFAULT; |
1187 |
PUSHMARK (SP); |
1188 |
PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
1189 |
PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
1190 |
PUTBACK; |
1191 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
1192 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1193 |
SPAGAIN; |
1194 |
FREETMPS; |
1195 |
LEAVE; |
1196 |
PL_runops = runops_trace; |
1197 |
} |
1198 |
} |
1199 |
} |
1200 |
} |
1201 |
} |
1202 |
|
1203 |
TAINT_NOT; |
1204 |
return 0; |
1205 |
} |
1206 |
|
1207 |
static struct CoroSLF cctx_ssl_frame; |
1208 |
|
1209 |
static void |
1210 |
slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
1211 |
{ |
1212 |
ta->prev = 0; |
1213 |
} |
1214 |
|
1215 |
static int |
1216 |
slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) |
1217 |
{ |
1218 |
*frame = cctx_ssl_frame; |
1219 |
|
1220 |
return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ |
1221 |
} |
1222 |
|
1223 |
/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ |
1224 |
static void NOINLINE |
1225 |
cctx_prepare (pTHX) |
1226 |
{ |
1227 |
PL_top_env = &PL_start_env; |
1228 |
|
1229 |
if (cctx_current->flags & CC_TRACE) |
1230 |
PL_runops = runops_trace; |
1231 |
|
1232 |
/* we already must be executing an SLF op, there is no other valid way |
1233 |
* that can lead to creation of a new cctx */ |
1234 |
assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", |
1235 |
slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); |
1236 |
|
1237 |
/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ |
1238 |
cctx_ssl_frame = slf_frame; |
1239 |
|
1240 |
slf_frame.prepare = slf_prepare_set_stacklevel; |
1241 |
slf_frame.check = slf_check_set_stacklevel; |
1242 |
} |
1243 |
|
1244 |
/* the tail of transfer: execute stuff we can only do after a transfer */ |
1245 |
INLINE void |
1246 |
transfer_tail (pTHX) |
1247 |
{ |
1248 |
free_coro_mortal (aTHX); |
1249 |
} |
1250 |
|
1251 |
/* |
1252 |
* this is a _very_ stripped down perl interpreter ;) |
1253 |
*/ |
1254 |
static void |
1255 |
cctx_run (void *arg) |
1256 |
{ |
1257 |
#ifdef USE_ITHREADS |
1258 |
# if CORO_PTHREAD |
1259 |
PERL_SET_CONTEXT (coro_thx); |
1260 |
# endif |
1261 |
#endif |
1262 |
{ |
1263 |
dTHX; |
1264 |
|
1265 |
/* normally we would need to skip the entersub here */ |
1266 |
/* not doing so will re-execute it, which is exactly what we want */ |
1267 |
/* PL_nop = PL_nop->op_next */ |
1268 |
|
1269 |
/* inject a fake subroutine call to cctx_init */ |
1270 |
cctx_prepare (aTHX); |
1271 |
|
1272 |
/* cctx_run is the alternative tail of transfer() */ |
1273 |
transfer_tail (aTHX); |
1274 |
|
1275 |
/* somebody or something will hit me for both perl_run and PL_restartop */ |
1276 |
PL_restartop = PL_op; |
1277 |
perl_run (PL_curinterp); |
1278 |
/* |
1279 |
* Unfortunately, there is no way to get at the return values of the |
1280 |
* coro body here, as perl_run destroys these. Likewise, we cannot catch |
1281 |
* runtime errors here, as this is just a random interpreter, not a thread. |
1282 |
*/ |
1283 |
|
1284 |
/* |
1285 |
* If perl-run returns we assume exit() was being called or the coro |
1286 |
* fell off the end, which seems to be the only valid (non-bug) |
1287 |
* reason for perl_run to return. We try to exit by jumping to the |
1288 |
* bootstrap-time "top" top_env, as we cannot restore the "main" |
1289 |
* coroutine as Coro has no such concept. |
1290 |
* This actually isn't valid with the pthread backend, but OSes requiring |
1291 |
* that backend are too broken to do it in a standards-compliant way. |
1292 |
*/ |
1293 |
PL_top_env = main_top_env; |
1294 |
JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
1295 |
} |
1296 |
} |
1297 |
|
1298 |
static coro_cctx * |
1299 |
cctx_new () |
1300 |
{ |
1301 |
coro_cctx *cctx; |
1302 |
|
1303 |
++cctx_count; |
1304 |
New (0, cctx, 1, coro_cctx); |
1305 |
|
1306 |
cctx->gen = cctx_gen; |
1307 |
cctx->flags = 0; |
1308 |
cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
1309 |
|
1310 |
return cctx; |
1311 |
} |
1312 |
|
1313 |
/* create a new cctx only suitable as source */ |
1314 |
static coro_cctx * |
1315 |
cctx_new_empty () |
1316 |
{ |
1317 |
coro_cctx *cctx = cctx_new (); |
1318 |
|
1319 |
cctx->sptr = 0; |
1320 |
coro_create (&cctx->cctx, 0, 0, 0, 0); |
1321 |
|
1322 |
return cctx; |
1323 |
} |
1324 |
|
1325 |
/* create a new cctx suitable as destination/running a perl interpreter */ |
1326 |
static coro_cctx * |
1327 |
cctx_new_run () |
1328 |
{ |
1329 |
coro_cctx *cctx = cctx_new (); |
1330 |
void *stack_start; |
1331 |
size_t stack_size; |
1332 |
|
1333 |
#if HAVE_MMAP |
1334 |
cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
1335 |
/* mmap supposedly does allocate-on-write for us */ |
1336 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1337 |
|
1338 |
if (cctx->sptr != (void *)-1) |
1339 |
{ |
1340 |
#if CORO_STACKGUARD |
1341 |
mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
1342 |
#endif |
1343 |
stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
1344 |
stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
1345 |
cctx->flags |= CC_MAPPED; |
1346 |
} |
1347 |
else |
1348 |
#endif |
1349 |
{ |
1350 |
cctx->ssize = cctx_stacksize * (long)sizeof (long); |
1351 |
New (0, cctx->sptr, cctx_stacksize, long); |
1352 |
|
1353 |
if (!cctx->sptr) |
1354 |
{ |
1355 |
perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
1356 |
_exit (EXIT_FAILURE); |
1357 |
} |
1358 |
|
1359 |
stack_start = cctx->sptr; |
1360 |
stack_size = cctx->ssize; |
1361 |
} |
1362 |
|
1363 |
#if CORO_USE_VALGRIND |
1364 |
cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
1365 |
#endif |
1366 |
|
1367 |
coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
1368 |
|
1369 |
return cctx; |
1370 |
} |
1371 |
|
1372 |
static void |
1373 |
cctx_destroy (coro_cctx *cctx) |
1374 |
{ |
1375 |
if (!cctx) |
1376 |
return; |
1377 |
|
1378 |
assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary? |
1379 |
|
1380 |
--cctx_count; |
1381 |
coro_destroy (&cctx->cctx); |
1382 |
|
1383 |
/* coro_transfer creates new, empty cctx's */ |
1384 |
if (cctx->sptr) |
1385 |
{ |
1386 |
#if CORO_USE_VALGRIND |
1387 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
1388 |
#endif |
1389 |
|
1390 |
#if HAVE_MMAP |
1391 |
if (cctx->flags & CC_MAPPED) |
1392 |
munmap (cctx->sptr, cctx->ssize); |
1393 |
else |
1394 |
#endif |
1395 |
Safefree (cctx->sptr); |
1396 |
} |
1397 |
|
1398 |
Safefree (cctx); |
1399 |
} |
1400 |
|
1401 |
/* wether this cctx should be destructed */ |
1402 |
#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
1403 |
|
1404 |
static coro_cctx * |
1405 |
cctx_get (pTHX) |
1406 |
{ |
1407 |
while (expect_true (cctx_first)) |
1408 |
{ |
1409 |
coro_cctx *cctx = cctx_first; |
1410 |
cctx_first = cctx->next; |
1411 |
--cctx_idle; |
1412 |
|
1413 |
if (expect_true (!CCTX_EXPIRED (cctx))) |
1414 |
return cctx; |
1415 |
|
1416 |
cctx_destroy (cctx); |
1417 |
} |
1418 |
|
1419 |
return cctx_new_run (); |
1420 |
} |
1421 |
|
1422 |
static void |
1423 |
cctx_put (coro_cctx *cctx) |
1424 |
{ |
1425 |
assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
1426 |
|
1427 |
/* free another cctx if overlimit */ |
1428 |
if (expect_false (cctx_idle >= cctx_max_idle)) |
1429 |
{ |
1430 |
coro_cctx *first = cctx_first; |
1431 |
cctx_first = first->next; |
1432 |
--cctx_idle; |
1433 |
|
1434 |
cctx_destroy (first); |
1435 |
} |
1436 |
|
1437 |
++cctx_idle; |
1438 |
cctx->next = cctx_first; |
1439 |
cctx_first = cctx; |
1440 |
} |
1441 |
|
1442 |
/** coroutine switching *****************************************************/ |
1443 |
|
1444 |
static void |
1445 |
transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1446 |
{ |
1447 |
/* TODO: throwing up here is considered harmful */ |
1448 |
|
1449 |
if (expect_true (prev != next)) |
1450 |
{ |
1451 |
if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1452 |
croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,"); |
1453 |
|
1454 |
if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED))) |
1455 |
croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,"); |
1456 |
|
1457 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
1458 |
if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
1459 |
croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
1460 |
#endif |
1461 |
} |
1462 |
} |
1463 |
|
1464 |
/* always use the TRANSFER macro */ |
1465 |
static void NOINLINE /* noinline so we have a fixed stackframe */ |
1466 |
transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
1467 |
{ |
1468 |
dSTACKLEVEL; |
1469 |
|
1470 |
/* sometimes transfer is only called to set idle_sp */ |
1471 |
if (expect_false (!prev)) |
1472 |
{ |
1473 |
cctx_current->idle_sp = STACKLEVEL; |
1474 |
assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1475 |
} |
1476 |
else if (expect_true (prev != next)) |
1477 |
{ |
1478 |
coro_cctx *cctx_prev; |
1479 |
|
1480 |
if (expect_false (prev->flags & CF_NEW)) |
1481 |
{ |
1482 |
/* create a new empty/source context */ |
1483 |
prev->flags &= ~CF_NEW; |
1484 |
prev->flags |= CF_RUNNING; |
1485 |
} |
1486 |
|
1487 |
prev->flags &= ~CF_RUNNING; |
1488 |
next->flags |= CF_RUNNING; |
1489 |
|
1490 |
/* first get rid of the old state */ |
1491 |
save_perl (aTHX_ prev); |
1492 |
|
1493 |
if (expect_false (next->flags & CF_NEW)) |
1494 |
{ |
1495 |
/* need to start coroutine */ |
1496 |
next->flags &= ~CF_NEW; |
1497 |
/* setup coroutine call */ |
1498 |
coro_setup (aTHX_ next); |
1499 |
} |
1500 |
else |
1501 |
load_perl (aTHX_ next); |
1502 |
|
1503 |
/* possibly untie and reuse the cctx */ |
1504 |
if (expect_true ( |
1505 |
cctx_current->idle_sp == STACKLEVEL |
1506 |
&& !(cctx_current->flags & CC_TRACE) |
1507 |
&& !force_cctx |
1508 |
)) |
1509 |
{ |
1510 |
/* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
1511 |
assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); |
1512 |
|
1513 |
/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ |
1514 |
/* without this the next cctx_get might destroy the running cctx while still in use */ |
1515 |
if (expect_false (CCTX_EXPIRED (cctx_current))) |
1516 |
if (expect_true (!next->cctx)) |
1517 |
next->cctx = cctx_get (aTHX); |
1518 |
|
1519 |
cctx_put (cctx_current); |
1520 |
} |
1521 |
else |
1522 |
prev->cctx = cctx_current; |
1523 |
|
1524 |
++next->usecount; |
1525 |
|
1526 |
cctx_prev = cctx_current; |
1527 |
cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); |
1528 |
|
1529 |
next->cctx = 0; |
1530 |
|
1531 |
if (expect_false (cctx_prev != cctx_current)) |
1532 |
{ |
1533 |
cctx_prev->top_env = PL_top_env; |
1534 |
PL_top_env = cctx_current->top_env; |
1535 |
coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); |
1536 |
} |
1537 |
|
1538 |
transfer_tail (aTHX); |
1539 |
} |
1540 |
} |
1541 |
|
1542 |
#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
1543 |
#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
1544 |
|
1545 |
/** high level stuff ********************************************************/ |
1546 |
|
1547 |
static int |
1548 |
coro_state_destroy (pTHX_ struct coro *coro) |
1549 |
{ |
1550 |
if (coro->flags & CF_DESTROYED) |
1551 |
return 0; |
1552 |
|
1553 |
if (coro->on_destroy && !PL_dirty) |
1554 |
coro->on_destroy (aTHX_ coro); |
1555 |
|
1556 |
coro->flags |= CF_DESTROYED; |
1557 |
|
1558 |
if (coro->flags & CF_READY) |
1559 |
{ |
1560 |
/* reduce nready, as destroying a ready coro effectively unreadies it */ |
1561 |
/* alternative: look through all ready queues and remove the coro */ |
1562 |
--coro_nready; |
1563 |
} |
1564 |
else |
1565 |
coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
1566 |
|
1567 |
if (coro->mainstack |
1568 |
&& coro->mainstack != main_mainstack |
1569 |
&& coro->slot |
1570 |
&& !PL_dirty) |
1571 |
coro_destruct_perl (aTHX_ coro); |
1572 |
|
1573 |
cctx_destroy (coro->cctx); |
1574 |
SvREFCNT_dec (coro->startcv); |
1575 |
SvREFCNT_dec (coro->args); |
1576 |
SvREFCNT_dec (CORO_THROW); |
1577 |
|
1578 |
if (coro->next) coro->next->prev = coro->prev; |
1579 |
if (coro->prev) coro->prev->next = coro->next; |
1580 |
if (coro == coro_first) coro_first = coro->next; |
1581 |
|
1582 |
return 1; |
1583 |
} |
1584 |
|
1585 |
static int |
1586 |
coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
1587 |
{ |
1588 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1589 |
mg->mg_ptr = 0; |
1590 |
|
1591 |
coro->hv = 0; |
1592 |
|
1593 |
if (--coro->refcnt < 0) |
1594 |
{ |
1595 |
coro_state_destroy (aTHX_ coro); |
1596 |
Safefree (coro); |
1597 |
} |
1598 |
|
1599 |
return 0; |
1600 |
} |
1601 |
|
1602 |
static int |
1603 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
1604 |
{ |
1605 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1606 |
|
1607 |
++coro->refcnt; |
1608 |
|
1609 |
return 0; |
1610 |
} |
1611 |
|
1612 |
static MGVTBL coro_state_vtbl = { |
1613 |
0, 0, 0, 0, |
1614 |
coro_state_free, |
1615 |
0, |
1616 |
#ifdef MGf_DUP |
1617 |
coro_state_dup, |
1618 |
#else |
1619 |
# define MGf_DUP 0 |
1620 |
#endif |
1621 |
}; |
1622 |
|
1623 |
static void |
1624 |
prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
1625 |
{ |
1626 |
ta->prev = SvSTATE (prev_sv); |
1627 |
ta->next = SvSTATE (next_sv); |
1628 |
TRANSFER_CHECK (*ta); |
1629 |
} |
1630 |
|
1631 |
static void |
1632 |
api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
1633 |
{ |
1634 |
struct coro_transfer_args ta; |
1635 |
|
1636 |
prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1637 |
TRANSFER (ta, 1); |
1638 |
} |
1639 |
|
1640 |
/** Coro ********************************************************************/ |
1641 |
|
1642 |
INLINE void |
1643 |
coro_enq (pTHX_ struct coro *coro) |
1644 |
{ |
1645 |
struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN]; |
1646 |
|
1647 |
SvREFCNT_inc_NN (coro->hv); |
1648 |
|
1649 |
coro->next_ready = 0; |
1650 |
*(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro; |
1651 |
ready [1] = coro; |
1652 |
} |
1653 |
|
1654 |
INLINE struct coro * |
1655 |
coro_deq (pTHX) |
1656 |
{ |
1657 |
int prio; |
1658 |
|
1659 |
for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; ) |
1660 |
{ |
1661 |
struct coro **ready = coro_ready [prio]; |
1662 |
|
1663 |
if (ready [0]) |
1664 |
{ |
1665 |
struct coro *coro = ready [0]; |
1666 |
ready [0] = coro->next_ready; |
1667 |
return coro; |
1668 |
} |
1669 |
} |
1670 |
|
1671 |
return 0; |
1672 |
} |
1673 |
|
1674 |
static void |
1675 |
invoke_sv_ready_hook_helper (void) |
1676 |
{ |
1677 |
dTHX; |
1678 |
dSP; |
1679 |
|
1680 |
ENTER; |
1681 |
SAVETMPS; |
1682 |
|
1683 |
PUSHMARK (SP); |
1684 |
PUTBACK; |
1685 |
call_sv (coro_readyhook, G_VOID | G_DISCARD); |
1686 |
|
1687 |
FREETMPS; |
1688 |
LEAVE; |
1689 |
} |
1690 |
|
1691 |
static int |
1692 |
api_ready (pTHX_ SV *coro_sv) |
1693 |
{ |
1694 |
struct coro *coro = SvSTATE (coro_sv); |
1695 |
|
1696 |
if (coro->flags & CF_READY) |
1697 |
return 0; |
1698 |
|
1699 |
coro->flags |= CF_READY; |
1700 |
|
1701 |
coro_enq (aTHX_ coro); |
1702 |
|
1703 |
if (!coro_nready++) |
1704 |
if (coroapi.readyhook) |
1705 |
coroapi.readyhook (); |
1706 |
|
1707 |
return 1; |
1708 |
} |
1709 |
|
1710 |
static int |
1711 |
api_is_ready (pTHX_ SV *coro_sv) |
1712 |
{ |
1713 |
return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1714 |
} |
1715 |
|
1716 |
/* expects to own a reference to next->hv */ |
1717 |
INLINE void |
1718 |
prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) |
1719 |
{ |
1720 |
SV *prev_sv = SvRV (coro_current); |
1721 |
|
1722 |
ta->prev = SvSTATE_hv (prev_sv); |
1723 |
ta->next = next; |
1724 |
|
1725 |
TRANSFER_CHECK (*ta); |
1726 |
|
1727 |
SvRV_set (coro_current, (SV *)next->hv); |
1728 |
|
1729 |
free_coro_mortal (aTHX); |
1730 |
coro_mortal = prev_sv; |
1731 |
} |
1732 |
|
1733 |
static void |
1734 |
prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
1735 |
{ |
1736 |
for (;;) |
1737 |
{ |
1738 |
struct coro *next = coro_deq (aTHX); |
1739 |
|
1740 |
if (expect_true (next)) |
1741 |
{ |
1742 |
/* cannot transfer to destroyed coros, skip and look for next */ |
1743 |
if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED))) |
1744 |
SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */ |
1745 |
else |
1746 |
{ |
1747 |
next->flags &= ~CF_READY; |
1748 |
--coro_nready; |
1749 |
|
1750 |
prepare_schedule_to (aTHX_ ta, next); |
1751 |
break; |
1752 |
} |
1753 |
} |
1754 |
else |
1755 |
{ |
1756 |
/* nothing to schedule: call the idle handler */ |
1757 |
if (SvROK (sv_idle) |
1758 |
&& SvOBJECT (SvRV (sv_idle))) |
1759 |
{ |
1760 |
++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ |
1761 |
api_ready (aTHX_ SvRV (sv_idle)); |
1762 |
--coro_nready; |
1763 |
} |
1764 |
else |
1765 |
{ |
1766 |
dSP; |
1767 |
|
1768 |
ENTER; |
1769 |
SAVETMPS; |
1770 |
|
1771 |
PUSHMARK (SP); |
1772 |
PUTBACK; |
1773 |
call_sv (sv_idle, G_VOID | G_DISCARD); |
1774 |
|
1775 |
FREETMPS; |
1776 |
LEAVE; |
1777 |
} |
1778 |
} |
1779 |
} |
1780 |
} |
1781 |
|
1782 |
INLINE void |
1783 |
prepare_cede (pTHX_ struct coro_transfer_args *ta) |
1784 |
{ |
1785 |
api_ready (aTHX_ coro_current); |
1786 |
prepare_schedule (aTHX_ ta); |
1787 |
} |
1788 |
|
1789 |
INLINE void |
1790 |
prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
1791 |
{ |
1792 |
SV *prev = SvRV (coro_current); |
1793 |
|
1794 |
if (coro_nready) |
1795 |
{ |
1796 |
prepare_schedule (aTHX_ ta); |
1797 |
api_ready (aTHX_ prev); |
1798 |
} |
1799 |
else |
1800 |
prepare_nop (aTHX_ ta); |
1801 |
} |
1802 |
|
1803 |
static void |
1804 |
api_schedule (pTHX) |
1805 |
{ |
1806 |
struct coro_transfer_args ta; |
1807 |
|
1808 |
prepare_schedule (aTHX_ &ta); |
1809 |
TRANSFER (ta, 1); |
1810 |
} |
1811 |
|
1812 |
static void |
1813 |
api_schedule_to (pTHX_ SV *coro_sv) |
1814 |
{ |
1815 |
struct coro_transfer_args ta; |
1816 |
struct coro *next = SvSTATE (coro_sv); |
1817 |
|
1818 |
SvREFCNT_inc_NN (coro_sv); |
1819 |
prepare_schedule_to (aTHX_ &ta, next); |
1820 |
} |
1821 |
|
1822 |
static int |
1823 |
api_cede (pTHX) |
1824 |
{ |
1825 |
struct coro_transfer_args ta; |
1826 |
|
1827 |
prepare_cede (aTHX_ &ta); |
1828 |
|
1829 |
if (expect_true (ta.prev != ta.next)) |
1830 |
{ |
1831 |
TRANSFER (ta, 1); |
1832 |
return 1; |
1833 |
} |
1834 |
else |
1835 |
return 0; |
1836 |
} |
1837 |
|
1838 |
static int |
1839 |
api_cede_notself (pTHX) |
1840 |
{ |
1841 |
if (coro_nready) |
1842 |
{ |
1843 |
struct coro_transfer_args ta; |
1844 |
|
1845 |
prepare_cede_notself (aTHX_ &ta); |
1846 |
TRANSFER (ta, 1); |
1847 |
return 1; |
1848 |
} |
1849 |
else |
1850 |
return 0; |
1851 |
} |
1852 |
|
1853 |
static void |
1854 |
api_trace (pTHX_ SV *coro_sv, int flags) |
1855 |
{ |
1856 |
struct coro *coro = SvSTATE (coro_sv); |
1857 |
|
1858 |
if (coro->flags & CF_RUNNING) |
1859 |
croak ("cannot enable tracing on a running coroutine, caught"); |
1860 |
|
1861 |
if (flags & CC_TRACE) |
1862 |
{ |
1863 |
if (!coro->cctx) |
1864 |
coro->cctx = cctx_new_run (); |
1865 |
else if (!(coro->cctx->flags & CC_TRACE)) |
1866 |
croak ("cannot enable tracing on coroutine with custom stack, caught"); |
1867 |
|
1868 |
coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
1869 |
} |
1870 |
else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
1871 |
{ |
1872 |
coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
1873 |
|
1874 |
if (coro->flags & CF_RUNNING) |
1875 |
PL_runops = RUNOPS_DEFAULT; |
1876 |
else |
1877 |
coro->slot->runops = RUNOPS_DEFAULT; |
1878 |
} |
1879 |
} |
1880 |
|
1881 |
static void |
1882 |
coro_call_on_destroy (pTHX_ struct coro *coro) |
1883 |
{ |
1884 |
SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); |
1885 |
SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0); |
1886 |
|
1887 |
if (on_destroyp) |
1888 |
{ |
1889 |
AV *on_destroy = (AV *)SvRV (*on_destroyp); |
1890 |
|
1891 |
while (AvFILLp (on_destroy) >= 0) |
1892 |
{ |
1893 |
dSP; /* don't disturb outer sp */ |
1894 |
SV *cb = av_pop (on_destroy); |
1895 |
|
1896 |
PUSHMARK (SP); |
1897 |
|
1898 |
if (statusp) |
1899 |
{ |
1900 |
int i; |
1901 |
AV *status = (AV *)SvRV (*statusp); |
1902 |
EXTEND (SP, AvFILLp (status) + 1); |
1903 |
|
1904 |
for (i = 0; i <= AvFILLp (status); ++i) |
1905 |
PUSHs (AvARRAY (status)[i]); |
1906 |
} |
1907 |
|
1908 |
PUTBACK; |
1909 |
call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); |
1910 |
} |
1911 |
} |
1912 |
} |
1913 |
|
1914 |
static void |
1915 |
slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
1916 |
{ |
1917 |
int i; |
1918 |
HV *hv = (HV *)SvRV (coro_current); |
1919 |
AV *av = newAV (); |
1920 |
|
1921 |
/* items are actually not so common, so optimise for this case */ |
1922 |
if (items) |
1923 |
{ |
1924 |
av_extend (av, items - 1); |
1925 |
|
1926 |
for (i = 0; i < items; ++i) |
1927 |
av_push (av, SvREFCNT_inc_NN (arg [i])); |
1928 |
} |
1929 |
|
1930 |
hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); |
1931 |
|
1932 |
av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ |
1933 |
api_ready (aTHX_ sv_manager); |
1934 |
|
1935 |
frame->prepare = prepare_schedule; |
1936 |
frame->check = slf_check_repeat; |
1937 |
|
1938 |
/* as a minor optimisation, we could unwind all stacks here */ |
1939 |
/* but that puts extra pressure on pp_slf, and is not worth much */ |
1940 |
/*coro_unwind_stacks (aTHX);*/ |
1941 |
} |
1942 |
|
1943 |
/*****************************************************************************/ |
1944 |
/* async pool handler */ |
1945 |
|
1946 |
static int |
1947 |
slf_check_pool_handler (pTHX_ struct CoroSLF *frame) |
1948 |
{ |
1949 |
HV *hv = (HV *)SvRV (coro_current); |
1950 |
struct coro *coro = (struct coro *)frame->data; |
1951 |
|
1952 |
if (!coro->invoke_cb) |
1953 |
return 1; /* loop till we have invoke */ |
1954 |
else |
1955 |
{ |
1956 |
hv_store (hv, "desc", sizeof ("desc") - 1, |
1957 |
newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
1958 |
|
1959 |
coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
1960 |
|
1961 |
{ |
1962 |
dSP; |
1963 |
XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0; |
1964 |
PUTBACK; |
1965 |
} |
1966 |
|
1967 |
SvREFCNT_dec (GvAV (PL_defgv)); |
1968 |
GvAV (PL_defgv) = coro->invoke_av; |
1969 |
coro->invoke_av = 0; |
1970 |
|
1971 |
return 0; |
1972 |
} |
1973 |
} |
1974 |
|
1975 |
static void |
1976 |
slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
1977 |
{ |
1978 |
HV *hv = (HV *)SvRV (coro_current); |
1979 |
struct coro *coro = SvSTATE_hv ((SV *)hv); |
1980 |
|
1981 |
if (expect_true (coro->saved_deffh)) |
1982 |
{ |
1983 |
/* subsequent iteration */ |
1984 |
SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
1985 |
coro->saved_deffh = 0; |
1986 |
|
1987 |
if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
1988 |
|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
1989 |
{ |
1990 |
coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); |
1991 |
coro->invoke_av = newAV (); |
1992 |
|
1993 |
frame->prepare = prepare_nop; |
1994 |
} |
1995 |
else |
1996 |
{ |
1997 |
av_clear (GvAV (PL_defgv)); |
1998 |
hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); |
1999 |
|
2000 |
coro->prio = 0; |
2001 |
|
2002 |
if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
2003 |
api_trace (aTHX_ coro_current, 0); |
2004 |
|
2005 |
frame->prepare = prepare_schedule; |
2006 |
av_push (av_async_pool, SvREFCNT_inc (hv)); |
2007 |
} |
2008 |
} |
2009 |
else |
2010 |
{ |
2011 |
/* first iteration, simply fall through */ |
2012 |
frame->prepare = prepare_nop; |
2013 |
} |
2014 |
|
2015 |
frame->check = slf_check_pool_handler; |
2016 |
frame->data = (void *)coro; |
2017 |
} |
2018 |
|
2019 |
/*****************************************************************************/ |
2020 |
/* rouse callback */ |
2021 |
|
2022 |
#define CORO_MAGIC_type_rouse PERL_MAGIC_ext |
2023 |
|
2024 |
static void |
2025 |
coro_rouse_callback (pTHX_ CV *cv) |
2026 |
{ |
2027 |
dXSARGS; |
2028 |
SV *data = (SV *)S_GENSUB_ARG; |
2029 |
|
2030 |
if (SvTYPE (SvRV (data)) != SVt_PVAV) |
2031 |
{ |
2032 |
/* first call, set args */ |
2033 |
SV *coro = SvRV (data); |
2034 |
AV *av = newAV (); |
2035 |
|
2036 |
SvRV_set (data, (SV *)av); |
2037 |
|
2038 |
/* better take a full copy of the arguments */ |
2039 |
while (items--) |
2040 |
av_store (av, items, newSVsv (ST (items))); |
2041 |
|
2042 |
api_ready (aTHX_ coro); |
2043 |
SvREFCNT_dec (coro); |
2044 |
} |
2045 |
|
2046 |
XSRETURN_EMPTY; |
2047 |
} |
2048 |
|
2049 |
static int |
2050 |
slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) |
2051 |
{ |
2052 |
SV *data = (SV *)frame->data; |
2053 |
|
2054 |
if (CORO_THROW) |
2055 |
return 0; |
2056 |
|
2057 |
if (SvTYPE (SvRV (data)) != SVt_PVAV) |
2058 |
return 1; |
2059 |
|
2060 |
/* now push all results on the stack */ |
2061 |
{ |
2062 |
dSP; |
2063 |
AV *av = (AV *)SvRV (data); |
2064 |
int i; |
2065 |
|
2066 |
EXTEND (SP, AvFILLp (av) + 1); |
2067 |
for (i = 0; i <= AvFILLp (av); ++i) |
2068 |
PUSHs (sv_2mortal (AvARRAY (av)[i])); |
2069 |
|
2070 |
/* we have stolen the elements, so set length to zero and free */ |
2071 |
AvFILLp (av) = -1; |
2072 |
av_undef (av); |
2073 |
|
2074 |
PUTBACK; |
2075 |
} |
2076 |
|
2077 |
return 0; |
2078 |
} |
2079 |
|
2080 |
static void |
2081 |
slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2082 |
{ |
2083 |
SV *cb; |
2084 |
|
2085 |
if (items) |
2086 |
cb = arg [0]; |
2087 |
else |
2088 |
{ |
2089 |
struct coro *coro = SvSTATE_current; |
2090 |
|
2091 |
if (!coro->rouse_cb) |
2092 |
croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,"); |
2093 |
|
2094 |
cb = sv_2mortal (coro->rouse_cb); |
2095 |
coro->rouse_cb = 0; |
2096 |
} |
2097 |
|
2098 |
if (!SvROK (cb) |
2099 |
|| SvTYPE (SvRV (cb)) != SVt_PVCV |
2100 |
|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) |
2101 |
croak ("Coro::rouse_wait called with illegal callback argument,"); |
2102 |
|
2103 |
{ |
2104 |
CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */ |
2105 |
SV *data = (SV *)S_GENSUB_ARG; |
2106 |
|
2107 |
frame->data = (void *)data; |
2108 |
frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; |
2109 |
frame->check = slf_check_rouse_wait; |
2110 |
} |
2111 |
} |
2112 |
|
2113 |
static SV * |
2114 |
coro_new_rouse_cb (pTHX) |
2115 |
{ |
2116 |
HV *hv = (HV *)SvRV (coro_current); |
2117 |
struct coro *coro = SvSTATE_hv (hv); |
2118 |
SV *data = newRV_inc ((SV *)hv); |
2119 |
SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data); |
2120 |
|
2121 |
sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); |
2122 |
SvREFCNT_dec (data); /* magicext increases the refcount */ |
2123 |
|
2124 |
SvREFCNT_dec (coro->rouse_cb); |
2125 |
coro->rouse_cb = SvREFCNT_inc_NN (cb); |
2126 |
|
2127 |
return cb; |
2128 |
} |
2129 |
|
2130 |
/*****************************************************************************/ |
2131 |
/* schedule-like-function opcode (SLF) */ |
2132 |
|
2133 |
static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
2134 |
static const CV *slf_cv; |
2135 |
static SV **slf_argv; |
2136 |
static int slf_argc, slf_arga; /* count, allocated */ |
2137 |
static I32 slf_ax; /* top of stack, for restore */ |
2138 |
|
2139 |
/* this restores the stack in the case we patched the entersub, to */ |
2140 |
/* recreate the stack frame as perl will on following calls */ |
2141 |
/* since entersub cleared the stack */ |
2142 |
static OP * |
2143 |
pp_restore (pTHX) |
2144 |
{ |
2145 |
int i; |
2146 |
SV **SP = PL_stack_base + slf_ax; |
2147 |
|
2148 |
PUSHMARK (SP); |
2149 |
|
2150 |
EXTEND (SP, slf_argc + 1); |
2151 |
|
2152 |
for (i = 0; i < slf_argc; ++i) |
2153 |
PUSHs (sv_2mortal (slf_argv [i])); |
2154 |
|
2155 |
PUSHs ((SV *)CvGV (slf_cv)); |
2156 |
|
2157 |
RETURNOP (slf_restore.op_first); |
2158 |
} |
2159 |
|
2160 |
static void |
2161 |
slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
2162 |
{ |
2163 |
SV **arg = (SV **)slf_frame.data; |
2164 |
|
2165 |
prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
2166 |
} |
2167 |
|
2168 |
static void |
2169 |
slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2170 |
{ |
2171 |
if (items != 2) |
2172 |
croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
2173 |
|
2174 |
frame->prepare = slf_prepare_transfer; |
2175 |
frame->check = slf_check_nop; |
2176 |
frame->data = (void *)arg; /* let's hope it will stay valid */ |
2177 |
} |
2178 |
|
2179 |
static void |
2180 |
slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2181 |
{ |
2182 |
frame->prepare = prepare_schedule; |
2183 |
frame->check = slf_check_nop; |
2184 |
} |
2185 |
|
2186 |
static void |
2187 |
slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta) |
2188 |
{ |
2189 |
struct coro *next = (struct coro *)slf_frame.data; |
2190 |
|
2191 |
SvREFCNT_inc_NN (next->hv); |
2192 |
prepare_schedule_to (aTHX_ ta, next); |
2193 |
} |
2194 |
|
2195 |
static void |
2196 |
slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2197 |
{ |
2198 |
if (!items) |
2199 |
croak ("Coro::schedule_to expects a coroutine argument, caught"); |
2200 |
|
2201 |
frame->data = (void *)SvSTATE (arg [0]); |
2202 |
frame->prepare = slf_prepare_schedule_to; |
2203 |
frame->check = slf_check_nop; |
2204 |
} |
2205 |
|
2206 |
static void |
2207 |
slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2208 |
{ |
2209 |
api_ready (aTHX_ SvRV (coro_current)); |
2210 |
|
2211 |
slf_init_schedule_to (aTHX_ frame, cv, arg, items); |
2212 |
} |
2213 |
|
2214 |
static void |
2215 |
slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2216 |
{ |
2217 |
frame->prepare = prepare_cede; |
2218 |
frame->check = slf_check_nop; |
2219 |
} |
2220 |
|
2221 |
static void |
2222 |
slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2223 |
{ |
2224 |
frame->prepare = prepare_cede_notself; |
2225 |
frame->check = slf_check_nop; |
2226 |
} |
2227 |
|
2228 |
/* |
2229 |
* these not obviously related functions are all rolled into one |
2230 |
* function to increase chances that they all will call transfer with the same |
2231 |
* stack offset |
2232 |
* SLF stands for "schedule-like-function". |
2233 |
*/ |
2234 |
static OP * |
2235 |
pp_slf (pTHX) |
2236 |
{ |
2237 |
I32 checkmark; /* mark SP to see how many elements check has pushed */ |
2238 |
|
2239 |
/* set up the slf frame, unless it has already been set-up */ |
2240 |
/* the latter happens when a new coro has been started */ |
2241 |
/* or when a new cctx was attached to an existing coroutine */ |
2242 |
if (expect_true (!slf_frame.prepare)) |
2243 |
{ |
2244 |
/* first iteration */ |
2245 |
dSP; |
2246 |
SV **arg = PL_stack_base + TOPMARK + 1; |
2247 |
int items = SP - arg; /* args without function object */ |
2248 |
SV *gv = *sp; |
2249 |
|
2250 |
/* do a quick consistency check on the "function" object, and if it isn't */ |
2251 |
/* for us, divert to the real entersub */ |
2252 |
if (SvTYPE (gv) != SVt_PVGV |
2253 |
|| !GvCV (gv) |
2254 |
|| !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
2255 |
return PL_ppaddr[OP_ENTERSUB](aTHX); |
2256 |
|
2257 |
if (!(PL_op->op_flags & OPf_STACKED)) |
2258 |
{ |
2259 |
/* ampersand-form of call, use @_ instead of stack */ |
2260 |
AV *av = GvAV (PL_defgv); |
2261 |
arg = AvARRAY (av); |
2262 |
items = AvFILLp (av) + 1; |
2263 |
} |
2264 |
|
2265 |
/* now call the init function, which needs to set up slf_frame */ |
2266 |
((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
2267 |
(aTHX_ &slf_frame, GvCV (gv), arg, items); |
2268 |
|
2269 |
/* pop args */ |
2270 |
SP = PL_stack_base + POPMARK; |
2271 |
|
2272 |
PUTBACK; |
2273 |
} |
2274 |
|
2275 |
/* now that we have a slf_frame, interpret it! */ |
2276 |
/* we use a callback system not to make the code needlessly */ |
2277 |
/* complicated, but so we can run multiple perl coros from one cctx */ |
2278 |
|
2279 |
do |
2280 |
{ |
2281 |
struct coro_transfer_args ta; |
2282 |
|
2283 |
slf_frame.prepare (aTHX_ &ta); |
2284 |
TRANSFER (ta, 0); |
2285 |
|
2286 |
checkmark = PL_stack_sp - PL_stack_base; |
2287 |
} |
2288 |
while (slf_frame.check (aTHX_ &slf_frame)); |
2289 |
|
2290 |
slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
2291 |
|
2292 |
/* exception handling */ |
2293 |
if (expect_false (CORO_THROW)) |
2294 |
{ |
2295 |
SV *exception = sv_2mortal (CORO_THROW); |
2296 |
|
2297 |
CORO_THROW = 0; |
2298 |
sv_setsv (ERRSV, exception); |
2299 |
croak (0); |
2300 |
} |
2301 |
|
2302 |
/* return value handling - mostly like entersub */ |
2303 |
/* make sure we put something on the stack in scalar context */ |
2304 |
if (GIMME_V == G_SCALAR) |
2305 |
{ |
2306 |
dSP; |
2307 |
SV **bot = PL_stack_base + checkmark; |
2308 |
|
2309 |
if (sp == bot) /* too few, push undef */ |
2310 |
bot [1] = &PL_sv_undef; |
2311 |
else if (sp != bot + 1) /* too many, take last one */ |
2312 |
bot [1] = *sp; |
2313 |
|
2314 |
SP = bot + 1; |
2315 |
|
2316 |
PUTBACK; |
2317 |
} |
2318 |
|
2319 |
return NORMAL; |
2320 |
} |
2321 |
|
2322 |
static void |
2323 |
api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
2324 |
{ |
2325 |
int i; |
2326 |
SV **arg = PL_stack_base + ax; |
2327 |
int items = PL_stack_sp - arg + 1; |
2328 |
|
2329 |
assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
2330 |
|
2331 |
if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
2332 |
&& PL_op->op_ppaddr != pp_slf) |
2333 |
croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
2334 |
|
2335 |
CvFLAGS (cv) |= CVf_SLF; |
2336 |
CvXSUBANY (cv).any_ptr = (void *)init_cb; |
2337 |
slf_cv = cv; |
2338 |
|
2339 |
/* we patch the op, and then re-run the whole call */ |
2340 |
/* we have to put the same argument on the stack for this to work */ |
2341 |
/* and this will be done by pp_restore */ |
2342 |
slf_restore.op_next = (OP *)&slf_restore; |
2343 |
slf_restore.op_type = OP_CUSTOM; |
2344 |
slf_restore.op_ppaddr = pp_restore; |
2345 |
slf_restore.op_first = PL_op; |
2346 |
|
2347 |
slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
2348 |
|
2349 |
if (PL_op->op_flags & OPf_STACKED) |
2350 |
{ |
2351 |
if (items > slf_arga) |
2352 |
{ |
2353 |
slf_arga = items; |
2354 |
free (slf_argv); |
2355 |
slf_argv = malloc (slf_arga * sizeof (SV *)); |
2356 |
} |
2357 |
|
2358 |
slf_argc = items; |
2359 |
|
2360 |
for (i = 0; i < items; ++i) |
2361 |
slf_argv [i] = SvREFCNT_inc (arg [i]); |
2362 |
} |
2363 |
else |
2364 |
slf_argc = 0; |
2365 |
|
2366 |
PL_op->op_ppaddr = pp_slf; |
2367 |
/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */ |
2368 |
|
2369 |
PL_op = (OP *)&slf_restore; |
2370 |
} |
2371 |
|
2372 |
/*****************************************************************************/ |
2373 |
/* dynamic wind */ |
2374 |
|
2375 |
static void |
2376 |
on_enterleave_call (pTHX_ SV *cb) |
2377 |
{ |
2378 |
dSP; |
2379 |
|
2380 |
PUSHSTACK; |
2381 |
|
2382 |
PUSHMARK (SP); |
2383 |
PUTBACK; |
2384 |
call_sv (cb, G_VOID | G_DISCARD); |
2385 |
SPAGAIN; |
2386 |
|
2387 |
POPSTACK; |
2388 |
} |
2389 |
|
2390 |
static SV * |
2391 |
coro_avp_pop_and_free (pTHX_ AV **avp) |
2392 |
{ |
2393 |
AV *av = *avp; |
2394 |
SV *res = av_pop (av); |
2395 |
|
2396 |
if (AvFILLp (av) < 0) |
2397 |
{ |
2398 |
*avp = 0; |
2399 |
SvREFCNT_dec (av); |
2400 |
} |
2401 |
|
2402 |
return res; |
2403 |
} |
2404 |
|
2405 |
static void |
2406 |
coro_pop_on_enter (pTHX_ void *coro) |
2407 |
{ |
2408 |
SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter); |
2409 |
SvREFCNT_dec (cb); |
2410 |
} |
2411 |
|
2412 |
static void |
2413 |
coro_pop_on_leave (pTHX_ void *coro) |
2414 |
{ |
2415 |
SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave); |
2416 |
on_enterleave_call (aTHX_ sv_2mortal (cb)); |
2417 |
} |
2418 |
|
2419 |
/*****************************************************************************/ |
2420 |
/* PerlIO::cede */ |
2421 |
|
2422 |
typedef struct |
2423 |
{ |
2424 |
PerlIOBuf base; |
2425 |
NV next, every; |
2426 |
} PerlIOCede; |
2427 |
|
2428 |
static IV |
2429 |
PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
2430 |
{ |
2431 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
2432 |
|
2433 |
self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
2434 |
self->next = nvtime () + self->every; |
2435 |
|
2436 |
return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
2437 |
} |
2438 |
|
2439 |
static SV * |
2440 |
PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
2441 |
{ |
2442 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
2443 |
|
2444 |
return newSVnv (self->every); |
2445 |
} |
2446 |
|
2447 |
static IV |
2448 |
PerlIOCede_flush (pTHX_ PerlIO *f) |
2449 |
{ |
2450 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
2451 |
double now = nvtime (); |
2452 |
|
2453 |
if (now >= self->next) |
2454 |
{ |
2455 |
api_cede (aTHX); |
2456 |
self->next = now + self->every; |
2457 |
} |
2458 |
|
2459 |
return PerlIOBuf_flush (aTHX_ f); |
2460 |
} |
2461 |
|
2462 |
static PerlIO_funcs PerlIO_cede = |
2463 |
{ |
2464 |
sizeof(PerlIO_funcs), |
2465 |
"cede", |
2466 |
sizeof(PerlIOCede), |
2467 |
PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
2468 |
PerlIOCede_pushed, |
2469 |
PerlIOBuf_popped, |
2470 |
PerlIOBuf_open, |
2471 |
PerlIOBase_binmode, |
2472 |
PerlIOCede_getarg, |
2473 |
PerlIOBase_fileno, |
2474 |
PerlIOBuf_dup, |
2475 |
PerlIOBuf_read, |
2476 |
PerlIOBuf_unread, |
2477 |
PerlIOBuf_write, |
2478 |
PerlIOBuf_seek, |
2479 |
PerlIOBuf_tell, |
2480 |
PerlIOBuf_close, |
2481 |
PerlIOCede_flush, |
2482 |
PerlIOBuf_fill, |
2483 |
PerlIOBase_eof, |
2484 |
PerlIOBase_error, |
2485 |
PerlIOBase_clearerr, |
2486 |
PerlIOBase_setlinebuf, |
2487 |
PerlIOBuf_get_base, |
2488 |
PerlIOBuf_bufsiz, |
2489 |
PerlIOBuf_get_ptr, |
2490 |
PerlIOBuf_get_cnt, |
2491 |
PerlIOBuf_set_ptrcnt, |
2492 |
}; |
2493 |
|
2494 |
/*****************************************************************************/ |
2495 |
/* Coro::Semaphore & Coro::Signal */ |
2496 |
|
2497 |
static SV * |
2498 |
coro_waitarray_new (pTHX_ int count) |
2499 |
{ |
2500 |
/* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
2501 |
AV *av = newAV (); |
2502 |
SV **ary; |
2503 |
|
2504 |
/* unfortunately, building manually saves memory */ |
2505 |
Newx (ary, 2, SV *); |
2506 |
AvALLOC (av) = ary; |
2507 |
#if PERL_VERSION_ATLEAST (5,10,0) |
2508 |
AvARRAY (av) = ary; |
2509 |
#else |
2510 |
/* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */ |
2511 |
/* -DDEBUGGING flags this as a bug, despite it perfectly working */ |
2512 |
SvPVX ((SV *)av) = (char *)ary; |
2513 |
#endif |
2514 |
AvMAX (av) = 1; |
2515 |
AvFILLp (av) = 0; |
2516 |
ary [0] = newSViv (count); |
2517 |
|
2518 |
return newRV_noinc ((SV *)av); |
2519 |
} |
2520 |
|
2521 |
/* semaphore */ |
2522 |
|
2523 |
static void |
2524 |
coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
2525 |
{ |
2526 |
SV *count_sv = AvARRAY (av)[0]; |
2527 |
IV count = SvIVX (count_sv); |
2528 |
|
2529 |
count += adjust; |
2530 |
SvIVX (count_sv) = count; |
2531 |
|
2532 |
/* now wake up as many waiters as are expected to lock */ |
2533 |
while (count > 0 && AvFILLp (av) > 0) |
2534 |
{ |
2535 |
SV *cb; |
2536 |
|
2537 |
/* swap first two elements so we can shift a waiter */ |
2538 |
AvARRAY (av)[0] = AvARRAY (av)[1]; |
2539 |
AvARRAY (av)[1] = count_sv; |
2540 |
cb = av_shift (av); |
2541 |
|
2542 |
if (SvOBJECT (cb)) |
2543 |
{ |
2544 |
api_ready (aTHX_ cb); |
2545 |
--count; |
2546 |
} |
2547 |
else if (SvTYPE (cb) == SVt_PVCV) |
2548 |
{ |
2549 |
dSP; |
2550 |
PUSHMARK (SP); |
2551 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
2552 |
PUTBACK; |
2553 |
call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
2554 |
} |
2555 |
|
2556 |
SvREFCNT_dec (cb); |
2557 |
} |
2558 |
} |
2559 |
|
2560 |
static void |
2561 |
coro_semaphore_on_destroy (pTHX_ struct coro *coro) |
2562 |
{ |
2563 |
/* call $sem->adjust (0) to possibly wake up some other waiters */ |
2564 |
coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
2565 |
} |
2566 |
|
2567 |
static int |
2568 |
slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) |
2569 |
{ |
2570 |
AV *av = (AV *)frame->data; |
2571 |
SV *count_sv = AvARRAY (av)[0]; |
2572 |
|
2573 |
/* if we are about to throw, don't actually acquire the lock, just throw */ |
2574 |
if (CORO_THROW) |
2575 |
return 0; |
2576 |
else if (SvIVX (count_sv) > 0) |
2577 |
{ |
2578 |
SvSTATE_current->on_destroy = 0; |
2579 |
|
2580 |
if (acquire) |
2581 |
SvIVX (count_sv) = SvIVX (count_sv) - 1; |
2582 |
else |
2583 |
coro_semaphore_adjust (aTHX_ av, 0); |
2584 |
|
2585 |
return 0; |
2586 |
} |
2587 |
else |
2588 |
{ |
2589 |
int i; |
2590 |
/* if we were woken up but can't down, we look through the whole */ |
2591 |
/* waiters list and only add us if we aren't in there already */ |
2592 |
/* this avoids some degenerate memory usage cases */ |
2593 |
|
2594 |
for (i = 1; i <= AvFILLp (av); ++i) |
2595 |
if (AvARRAY (av)[i] == SvRV (coro_current)) |
2596 |
return 1; |
2597 |
|
2598 |
av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2599 |
return 1; |
2600 |
} |
2601 |
} |
2602 |
|
2603 |
static int |
2604 |
slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
2605 |
{ |
2606 |
return slf_check_semaphore_down_or_wait (aTHX_ frame, 1); |
2607 |
} |
2608 |
|
2609 |
static int |
2610 |
slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame) |
2611 |
{ |
2612 |
return slf_check_semaphore_down_or_wait (aTHX_ frame, 0); |
2613 |
} |
2614 |
|
2615 |
static void |
2616 |
slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2617 |
{ |
2618 |
AV *av = (AV *)SvRV (arg [0]); |
2619 |
|
2620 |
if (SvIVX (AvARRAY (av)[0]) > 0) |
2621 |
{ |
2622 |
frame->data = (void *)av; |
2623 |
frame->prepare = prepare_nop; |
2624 |
} |
2625 |
else |
2626 |
{ |
2627 |
av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2628 |
|
2629 |
frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
2630 |
frame->prepare = prepare_schedule; |
2631 |
|
2632 |
/* to avoid race conditions when a woken-up coro gets terminated */ |
2633 |
/* we arrange for a temporary on_destroy that calls adjust (0) */ |
2634 |
SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
2635 |
} |
2636 |
} |
2637 |
|
2638 |
static void |
2639 |
slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2640 |
{ |
2641 |
slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
2642 |
frame->check = slf_check_semaphore_down; |
2643 |
} |
2644 |
|
2645 |
static void |
2646 |
slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2647 |
{ |
2648 |
if (items >= 2) |
2649 |
{ |
2650 |
/* callback form */ |
2651 |
AV *av = (AV *)SvRV (arg [0]); |
2652 |
SV *cb_cv = s_get_cv_croak (arg [1]); |
2653 |
|
2654 |
av_push (av, SvREFCNT_inc_NN (cb_cv)); |
2655 |
|
2656 |
if (SvIVX (AvARRAY (av)[0]) > 0) |
2657 |
coro_semaphore_adjust (aTHX_ av, 0); |
2658 |
|
2659 |
frame->prepare = prepare_nop; |
2660 |
frame->check = slf_check_nop; |
2661 |
} |
2662 |
else |
2663 |
{ |
2664 |
slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
2665 |
frame->check = slf_check_semaphore_wait; |
2666 |
} |
2667 |
} |
2668 |
|
2669 |
/* signal */ |
2670 |
|
2671 |
static void |
2672 |
coro_signal_wake (pTHX_ AV *av, int count) |
2673 |
{ |
2674 |
SvIVX (AvARRAY (av)[0]) = 0; |
2675 |
|
2676 |
/* now signal count waiters */ |
2677 |
while (count > 0 && AvFILLp (av) > 0) |
2678 |
{ |
2679 |
SV *cb; |
2680 |
|
2681 |
/* swap first two elements so we can shift a waiter */ |
2682 |
cb = AvARRAY (av)[0]; |
2683 |
AvARRAY (av)[0] = AvARRAY (av)[1]; |
2684 |
AvARRAY (av)[1] = cb; |
2685 |
|
2686 |
cb = av_shift (av); |
2687 |
|
2688 |
if (SvTYPE (cb) == SVt_PVCV) |
2689 |
{ |
2690 |
dSP; |
2691 |
PUSHMARK (SP); |
2692 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
2693 |
PUTBACK; |
2694 |
call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
2695 |
} |
2696 |
else |
2697 |
{ |
2698 |
api_ready (aTHX_ cb); |
2699 |
sv_setiv (cb, 0); /* signal waiter */ |
2700 |
} |
2701 |
|
2702 |
SvREFCNT_dec (cb); |
2703 |
|
2704 |
--count; |
2705 |
} |
2706 |
} |
2707 |
|
2708 |
static int |
2709 |
slf_check_signal_wait (pTHX_ struct CoroSLF *frame) |
2710 |
{ |
2711 |
/* if we are about to throw, also stop waiting */ |
2712 |
return SvROK ((SV *)frame->data) && !CORO_THROW; |
2713 |
} |
2714 |
|
2715 |
static void |
2716 |
slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2717 |
{ |
2718 |
AV *av = (AV *)SvRV (arg [0]); |
2719 |
|
2720 |
if (items >= 2) |
2721 |
{ |
2722 |
SV *cb_cv = s_get_cv_croak (arg [1]); |
2723 |
av_push (av, SvREFCNT_inc_NN (cb_cv)); |
2724 |
|
2725 |
if (SvIVX (AvARRAY (av)[0])) |
2726 |
coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */ |
2727 |
|
2728 |
frame->prepare = prepare_nop; |
2729 |
frame->check = slf_check_nop; |
2730 |
} |
2731 |
else if (SvIVX (AvARRAY (av)[0])) |
2732 |
{ |
2733 |
SvIVX (AvARRAY (av)[0]) = 0; |
2734 |
frame->prepare = prepare_nop; |
2735 |
frame->check = slf_check_nop; |
2736 |
} |
2737 |
else |
2738 |
{ |
2739 |
SV *waiter = newSVsv (coro_current); /* owned by signal av */ |
2740 |
|
2741 |
av_push (av, waiter); |
2742 |
|
2743 |
frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ |
2744 |
frame->prepare = prepare_schedule; |
2745 |
frame->check = slf_check_signal_wait; |
2746 |
} |
2747 |
} |
2748 |
|
2749 |
/*****************************************************************************/ |
2750 |
/* Coro::AIO */ |
2751 |
|
2752 |
#define CORO_MAGIC_type_aio PERL_MAGIC_ext |
2753 |
|
2754 |
/* helper storage struct */ |
2755 |
struct io_state |
2756 |
{ |
2757 |
int errorno; |
2758 |
I32 laststype; /* U16 in 5.10.0 */ |
2759 |
int laststatval; |
2760 |
Stat_t statcache; |
2761 |
}; |
2762 |
|
2763 |
static void |
2764 |
coro_aio_callback (pTHX_ CV *cv) |
2765 |
{ |
2766 |
dXSARGS; |
2767 |
AV *state = (AV *)S_GENSUB_ARG; |
2768 |
SV *coro = av_pop (state); |
2769 |
SV *data_sv = newSV (sizeof (struct io_state)); |
2770 |
|
2771 |
av_extend (state, items - 1); |
2772 |
|
2773 |
sv_upgrade (data_sv, SVt_PV); |
2774 |
SvCUR_set (data_sv, sizeof (struct io_state)); |
2775 |
SvPOK_only (data_sv); |
2776 |
|
2777 |
{ |
2778 |
struct io_state *data = (struct io_state *)SvPVX (data_sv); |
2779 |
|
2780 |
data->errorno = errno; |
2781 |
data->laststype = PL_laststype; |
2782 |
data->laststatval = PL_laststatval; |
2783 |
data->statcache = PL_statcache; |
2784 |
} |
2785 |
|
2786 |
/* now build the result vector out of all the parameters and the data_sv */ |
2787 |
{ |
2788 |
int i; |
2789 |
|
2790 |
for (i = 0; i < items; ++i) |
2791 |
av_push (state, SvREFCNT_inc_NN (ST (i))); |
2792 |
} |
2793 |
|
2794 |
av_push (state, data_sv); |
2795 |
|
2796 |
api_ready (aTHX_ coro); |
2797 |
SvREFCNT_dec (coro); |
2798 |
SvREFCNT_dec ((AV *)state); |
2799 |
} |
2800 |
|
2801 |
static int |
2802 |
slf_check_aio_req (pTHX_ struct CoroSLF *frame) |
2803 |
{ |
2804 |
AV *state = (AV *)frame->data; |
2805 |
|
2806 |
/* if we are about to throw, return early */ |
2807 |
/* this does not cancel the aio request, but at least */ |
2808 |
/* it quickly returns */ |
2809 |
if (CORO_THROW) |
2810 |
return 0; |
2811 |
|
2812 |
/* one element that is an RV? repeat! */ |
2813 |
if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) |
2814 |
return 1; |
2815 |
|
2816 |
/* restore status */ |
2817 |
{ |
2818 |
SV *data_sv = av_pop (state); |
2819 |
struct io_state *data = (struct io_state *)SvPVX (data_sv); |
2820 |
|
2821 |
errno = data->errorno; |
2822 |
PL_laststype = data->laststype; |
2823 |
PL_laststatval = data->laststatval; |
2824 |
PL_statcache = data->statcache; |
2825 |
|
2826 |
SvREFCNT_dec (data_sv); |
2827 |
} |
2828 |
|
2829 |
/* push result values */ |
2830 |
{ |
2831 |
dSP; |
2832 |
int i; |
2833 |
|
2834 |
EXTEND (SP, AvFILLp (state) + 1); |
2835 |
for (i = 0; i <= AvFILLp (state); ++i) |
2836 |
PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i]))); |
2837 |
|
2838 |
PUTBACK; |
2839 |
} |
2840 |
|
2841 |
return 0; |
2842 |
} |
2843 |
|
2844 |
static void |
2845 |
slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2846 |
{ |
2847 |
AV *state = (AV *)sv_2mortal ((SV *)newAV ()); |
2848 |
SV *coro_hv = SvRV (coro_current); |
2849 |
struct coro *coro = SvSTATE_hv (coro_hv); |
2850 |
|
2851 |
/* put our coroutine id on the state arg */ |
2852 |
av_push (state, SvREFCNT_inc_NN (coro_hv)); |
2853 |
|
2854 |
/* first see whether we have a non-zero priority and set it as AIO prio */ |
2855 |
if (coro->prio) |
2856 |
{ |
2857 |
dSP; |
2858 |
|
2859 |
static SV *prio_cv; |
2860 |
static SV *prio_sv; |
2861 |
|
2862 |
if (expect_false (!prio_cv)) |
2863 |
{ |
2864 |
prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); |
2865 |
prio_sv = newSViv (0); |
2866 |
} |
2867 |
|
2868 |
PUSHMARK (SP); |
2869 |
sv_setiv (prio_sv, coro->prio); |
2870 |
XPUSHs (prio_sv); |
2871 |
|
2872 |
PUTBACK; |
2873 |
call_sv (prio_cv, G_VOID | G_DISCARD); |
2874 |
} |
2875 |
|
2876 |
/* now call the original request */ |
2877 |
{ |
2878 |
dSP; |
2879 |
CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj; |
2880 |
int i; |
2881 |
|
2882 |
PUSHMARK (SP); |
2883 |
|
2884 |
/* first push all args to the stack */ |
2885 |
EXTEND (SP, items + 1); |
2886 |
|
2887 |
for (i = 0; i < items; ++i) |
2888 |
PUSHs (arg [i]); |
2889 |
|
2890 |
/* now push the callback closure */ |
2891 |
PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); |
2892 |
|
2893 |
/* now call the AIO function - we assume our request is uncancelable */ |
2894 |
PUTBACK; |
2895 |
call_sv ((SV *)req, G_VOID | G_DISCARD); |
2896 |
} |
2897 |
|
2898 |
/* now that the requets is going, we loop toll we have a result */ |
2899 |
frame->data = (void *)state; |
2900 |
frame->prepare = prepare_schedule; |
2901 |
frame->check = slf_check_aio_req; |
2902 |
} |
2903 |
|
2904 |
static void |
2905 |
coro_aio_req_xs (pTHX_ CV *cv) |
2906 |
{ |
2907 |
dXSARGS; |
2908 |
|
2909 |
CORO_EXECUTE_SLF_XS (slf_init_aio_req); |
2910 |
|
2911 |
XSRETURN_EMPTY; |
2912 |
} |
2913 |
|
2914 |
/*****************************************************************************/ |
2915 |
|
2916 |
#if CORO_CLONE |
2917 |
# include "clone.c" |
2918 |
#endif |
2919 |
|
2920 |
/*****************************************************************************/ |
2921 |
|
2922 |
static SV * |
2923 |
coro_new (HV *stash, SV **argv, int argc, int is_coro) |
2924 |
{ |
2925 |
SV *coro_sv; |
2926 |
struct coro *coro; |
2927 |
MAGIC *mg; |
2928 |
HV *hv; |
2929 |
SV *cb; |
2930 |
int i; |
2931 |
|
2932 |
if (argc > 0) |
2933 |
{ |
2934 |
cb = s_get_cv_croak (argv [0]); |
2935 |
|
2936 |
if (!is_coro) |
2937 |
{ |
2938 |
if (CvISXSUB (cb)) |
2939 |
croak ("Coro::State doesn't support XS functions as coroutine start, caught"); |
2940 |
|
2941 |
if (!CvROOT (cb)) |
2942 |
croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught"); |
2943 |
} |
2944 |
} |
2945 |
|
2946 |
Newz (0, coro, 1, struct coro); |
2947 |
coro->args = newAV (); |
2948 |
coro->flags = CF_NEW; |
2949 |
|
2950 |
if (coro_first) coro_first->prev = coro; |
2951 |
coro->next = coro_first; |
2952 |
coro_first = coro; |
2953 |
|
2954 |
coro->hv = hv = newHV (); |
2955 |
mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
2956 |
mg->mg_flags |= MGf_DUP; |
2957 |
coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash); |
2958 |
|
2959 |
if (argc > 0) |
2960 |
{ |
2961 |
av_extend (coro->args, argc + is_coro - 1); |
2962 |
|
2963 |
if (is_coro) |
2964 |
{ |
2965 |
av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb)); |
2966 |
cb = (SV *)cv_coro_run; |
2967 |
} |
2968 |
|
2969 |
coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb); |
2970 |
|
2971 |
for (i = 1; i < argc; i++) |
2972 |
av_push (coro->args, newSVsv (argv [i])); |
2973 |
} |
2974 |
|
2975 |
return coro_sv; |
2976 |
} |
2977 |
|
2978 |
MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
2979 |
|
2980 |
PROTOTYPES: DISABLE |
2981 |
|
2982 |
BOOT: |
2983 |
{ |
2984 |
#ifdef USE_ITHREADS |
2985 |
# if CORO_PTHREAD |
2986 |
coro_thx = PERL_GET_CONTEXT; |
2987 |
# endif |
2988 |
#endif |
2989 |
BOOT_PAGESIZE; |
2990 |
|
2991 |
cctx_current = cctx_new_empty (); |
2992 |
|
2993 |
irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
2994 |
stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
2995 |
|
2996 |
orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
2997 |
orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
2998 |
orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
2999 |
|
3000 |
hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
3001 |
rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
3002 |
rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
3003 |
|
3004 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
3005 |
|
3006 |
newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
3007 |
newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
3008 |
newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
3009 |
newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
3010 |
|
3011 |
main_mainstack = PL_mainstack; |
3012 |
main_top_env = PL_top_env; |
3013 |
|
3014 |
while (main_top_env->je_prev) |
3015 |
main_top_env = main_top_env->je_prev; |
3016 |
|
3017 |
{ |
3018 |
SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
3019 |
|
3020 |
if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
3021 |
hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0); |
3022 |
|
3023 |
if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
3024 |
hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0); |
3025 |
} |
3026 |
|
3027 |
coroapi.ver = CORO_API_VERSION; |
3028 |
coroapi.rev = CORO_API_REVISION; |
3029 |
|
3030 |
coroapi.transfer = api_transfer; |
3031 |
|
3032 |
coroapi.sv_state = SvSTATE_; |
3033 |
coroapi.execute_slf = api_execute_slf; |
3034 |
coroapi.prepare_nop = prepare_nop; |
3035 |
coroapi.prepare_schedule = prepare_schedule; |
3036 |
coroapi.prepare_cede = prepare_cede; |
3037 |
coroapi.prepare_cede_notself = prepare_cede_notself; |
3038 |
|
3039 |
{ |
3040 |
SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
3041 |
|
3042 |
if (!svp) croak ("Time::HiRes is required"); |
3043 |
if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
3044 |
|
3045 |
nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
3046 |
|
3047 |
svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0); |
3048 |
u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp)); |
3049 |
} |
3050 |
|
3051 |
assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL)); |
3052 |
} |
3053 |
|
3054 |
SV * |
3055 |
new (SV *klass, ...) |
3056 |
ALIAS: |
3057 |
Coro::new = 1 |
3058 |
CODE: |
3059 |
RETVAL = coro_new (ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix); |
3060 |
OUTPUT: |
3061 |
RETVAL |
3062 |
|
3063 |
void |
3064 |
transfer (...) |
3065 |
PROTOTYPE: $$ |
3066 |
CODE: |
3067 |
CORO_EXECUTE_SLF_XS (slf_init_transfer); |
3068 |
|
3069 |
bool |
3070 |
_destroy (SV *coro_sv) |
3071 |
CODE: |
3072 |
RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
3073 |
OUTPUT: |
3074 |
RETVAL |
3075 |
|
3076 |
void |
3077 |
_exit (int code) |
3078 |
PROTOTYPE: $ |
3079 |
CODE: |
3080 |
_exit (code); |
3081 |
|
3082 |
SV * |
3083 |
clone (Coro::State coro) |
3084 |
CODE: |
3085 |
{ |
3086 |
#if CORO_CLONE |
3087 |
struct coro *ncoro = coro_clone (aTHX_ coro); |
3088 |
MAGIC *mg; |
3089 |
/* TODO: too much duplication */ |
3090 |
ncoro->hv = newHV (); |
3091 |
mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0); |
3092 |
mg->mg_flags |= MGf_DUP; |
3093 |
RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv)); |
3094 |
#else |
3095 |
croak ("Coro::State->clone has not been configured into this installation of Coro, realised"); |
3096 |
#endif |
3097 |
} |
3098 |
OUTPUT: |
3099 |
RETVAL |
3100 |
|
3101 |
int |
3102 |
cctx_stacksize (int new_stacksize = 0) |
3103 |
PROTOTYPE: ;$ |
3104 |
CODE: |
3105 |
RETVAL = cctx_stacksize; |
3106 |
if (new_stacksize) |
3107 |
{ |
3108 |
cctx_stacksize = new_stacksize; |
3109 |
++cctx_gen; |
3110 |
} |
3111 |
OUTPUT: |
3112 |
RETVAL |
3113 |
|
3114 |
int |
3115 |
cctx_max_idle (int max_idle = 0) |
3116 |
PROTOTYPE: ;$ |
3117 |
CODE: |
3118 |
RETVAL = cctx_max_idle; |
3119 |
if (max_idle > 1) |
3120 |
cctx_max_idle = max_idle; |
3121 |
OUTPUT: |
3122 |
RETVAL |
3123 |
|
3124 |
int |
3125 |
cctx_count () |
3126 |
PROTOTYPE: |
3127 |
CODE: |
3128 |
RETVAL = cctx_count; |
3129 |
OUTPUT: |
3130 |
RETVAL |
3131 |
|
3132 |
int |
3133 |
cctx_idle () |
3134 |
PROTOTYPE: |
3135 |
CODE: |
3136 |
RETVAL = cctx_idle; |
3137 |
OUTPUT: |
3138 |
RETVAL |
3139 |
|
3140 |
void |
3141 |
list () |
3142 |
PROTOTYPE: |
3143 |
PPCODE: |
3144 |
{ |
3145 |
struct coro *coro; |
3146 |
for (coro = coro_first; coro; coro = coro->next) |
3147 |
if (coro->hv) |
3148 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
3149 |
} |
3150 |
|
3151 |
void |
3152 |
call (Coro::State coro, SV *coderef) |
3153 |
ALIAS: |
3154 |
eval = 1 |
3155 |
CODE: |
3156 |
{ |
3157 |
if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
3158 |
{ |
3159 |
struct coro *current = SvSTATE_current; |
3160 |
|
3161 |
if (current != coro) |
3162 |
{ |
3163 |
PUTBACK; |
3164 |
save_perl (aTHX_ current); |
3165 |
load_perl (aTHX_ coro); |
3166 |
SPAGAIN; |
3167 |
} |
3168 |
|
3169 |
PUSHSTACK; |
3170 |
|
3171 |
PUSHMARK (SP); |
3172 |
PUTBACK; |
3173 |
|
3174 |
if (ix) |
3175 |
eval_sv (coderef, 0); |
3176 |
else |
3177 |
call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
3178 |
|
3179 |
POPSTACK; |
3180 |
SPAGAIN; |
3181 |
|
3182 |
if (current != coro) |
3183 |
{ |
3184 |
PUTBACK; |
3185 |
save_perl (aTHX_ coro); |
3186 |
load_perl (aTHX_ current); |
3187 |
SPAGAIN; |
3188 |
} |
3189 |
} |
3190 |
} |
3191 |
|
3192 |
SV * |
3193 |
is_ready (Coro::State coro) |
3194 |
PROTOTYPE: $ |
3195 |
ALIAS: |
3196 |
is_ready = CF_READY |
3197 |
is_running = CF_RUNNING |
3198 |
is_new = CF_NEW |
3199 |
is_destroyed = CF_DESTROYED |
3200 |
is_suspended = CF_SUSPENDED |
3201 |
CODE: |
3202 |
RETVAL = boolSV (coro->flags & ix); |
3203 |
OUTPUT: |
3204 |
RETVAL |
3205 |
|
3206 |
void |
3207 |
throw (Coro::State self, SV *throw = &PL_sv_undef) |
3208 |
PROTOTYPE: $;$ |
3209 |
CODE: |
3210 |
{ |
3211 |
struct coro *current = SvSTATE_current; |
3212 |
SV **throwp = self == current ? &CORO_THROW : &self->except; |
3213 |
SvREFCNT_dec (*throwp); |
3214 |
SvGETMAGIC (throw); |
3215 |
*throwp = SvOK (throw) ? newSVsv (throw) : 0; |
3216 |
} |
3217 |
|
3218 |
void |
3219 |
api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
3220 |
PROTOTYPE: $;$ |
3221 |
C_ARGS: aTHX_ coro, flags |
3222 |
|
3223 |
SV * |
3224 |
has_cctx (Coro::State coro) |
3225 |
PROTOTYPE: $ |
3226 |
CODE: |
3227 |
/* maybe manage the running flag differently */ |
3228 |
RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING)); |
3229 |
OUTPUT: |
3230 |
RETVAL |
3231 |
|
3232 |
int |
3233 |
is_traced (Coro::State coro) |
3234 |
PROTOTYPE: $ |
3235 |
CODE: |
3236 |
RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
3237 |
OUTPUT: |
3238 |
RETVAL |
3239 |
|
3240 |
UV |
3241 |
rss (Coro::State coro) |
3242 |
PROTOTYPE: $ |
3243 |
ALIAS: |
3244 |
usecount = 1 |
3245 |
CODE: |
3246 |
switch (ix) |
3247 |
{ |
3248 |
case 0: RETVAL = coro_rss (aTHX_ coro); break; |
3249 |
case 1: RETVAL = coro->usecount; break; |
3250 |
} |
3251 |
OUTPUT: |
3252 |
RETVAL |
3253 |
|
3254 |
void |
3255 |
force_cctx () |
3256 |
PROTOTYPE: |
3257 |
CODE: |
3258 |
cctx_current->idle_sp = 0; |
3259 |
|
3260 |
void |
3261 |
swap_defsv (Coro::State self) |
3262 |
PROTOTYPE: $ |
3263 |
ALIAS: |
3264 |
swap_defav = 1 |
3265 |
CODE: |
3266 |
if (!self->slot) |
3267 |
croak ("cannot swap state with coroutine that has no saved state,"); |
3268 |
else |
3269 |
{ |
3270 |
SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
3271 |
SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
3272 |
|
3273 |
SV *tmp = *src; *src = *dst; *dst = tmp; |
3274 |
} |
3275 |
|
3276 |
void |
3277 |
cancel (Coro::State self) |
3278 |
CODE: |
3279 |
coro_state_destroy (aTHX_ self); |
3280 |
coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */ |
3281 |
|
3282 |
|
3283 |
SV * |
3284 |
enable_times (int enabled = enable_times) |
3285 |
CODE: |
3286 |
{ |
3287 |
RETVAL = boolSV (enable_times); |
3288 |
|
3289 |
if (enabled != enable_times) |
3290 |
{ |
3291 |
enable_times = enabled; |
3292 |
|
3293 |
coro_times_update (); |
3294 |
(enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current)); |
3295 |
} |
3296 |
} |
3297 |
OUTPUT: |
3298 |
RETVAL |
3299 |
|
3300 |
void |
3301 |
times (Coro::State self) |
3302 |
PPCODE: |
3303 |
{ |
3304 |
struct coro *current = SvSTATE (coro_current); |
3305 |
|
3306 |
if (expect_false (current == self)) |
3307 |
{ |
3308 |
coro_times_update (); |
3309 |
coro_times_add (SvSTATE (coro_current)); |
3310 |
} |
3311 |
|
3312 |
EXTEND (SP, 2); |
3313 |
PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9))); |
3314 |
PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9))); |
3315 |
|
3316 |
if (expect_false (current == self)) |
3317 |
coro_times_sub (SvSTATE (coro_current)); |
3318 |
} |
3319 |
|
3320 |
MODULE = Coro::State PACKAGE = Coro |
3321 |
|
3322 |
BOOT: |
3323 |
{ |
3324 |
sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
3325 |
sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
3326 |
cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD); |
3327 |
cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD); |
3328 |
coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); |
3329 |
av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
3330 |
av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); |
3331 |
sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); |
3332 |
sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); |
3333 |
|
3334 |
sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); |
3335 |
sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); |
3336 |
cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); |
3337 |
cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new); |
3338 |
|
3339 |
coro_stash = gv_stashpv ("Coro", TRUE); |
3340 |
|
3341 |
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX)); |
3342 |
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH)); |
3343 |
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL)); |
3344 |
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW)); |
3345 |
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE)); |
3346 |
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN)); |
3347 |
|
3348 |
{ |
3349 |
SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
3350 |
|
3351 |
coroapi.schedule = api_schedule; |
3352 |
coroapi.schedule_to = api_schedule_to; |
3353 |
coroapi.cede = api_cede; |
3354 |
coroapi.cede_notself = api_cede_notself; |
3355 |
coroapi.ready = api_ready; |
3356 |
coroapi.is_ready = api_is_ready; |
3357 |
coroapi.nready = coro_nready; |
3358 |
coroapi.current = coro_current; |
3359 |
|
3360 |
/*GCoroAPI = &coroapi;*/ |
3361 |
sv_setiv (sv, (IV)&coroapi); |
3362 |
SvREADONLY_on (sv); |
3363 |
} |
3364 |
} |
3365 |
|
3366 |
SV * |
3367 |
async (...) |
3368 |
PROTOTYPE: &@ |
3369 |
CODE: |
3370 |
RETVAL = coro_new (coro_stash, &ST (0), items, 1); |
3371 |
api_ready (RETVAL); |
3372 |
OUTPUT: |
3373 |
RETVAL |
3374 |
|
3375 |
void |
3376 |
terminate (...) |
3377 |
CODE: |
3378 |
CORO_EXECUTE_SLF_XS (slf_init_terminate); |
3379 |
|
3380 |
void |
3381 |
schedule (...) |
3382 |
CODE: |
3383 |
CORO_EXECUTE_SLF_XS (slf_init_schedule); |
3384 |
|
3385 |
void |
3386 |
schedule_to (...) |
3387 |
CODE: |
3388 |
CORO_EXECUTE_SLF_XS (slf_init_schedule_to); |
3389 |
|
3390 |
void |
3391 |
cede_to (...) |
3392 |
CODE: |
3393 |
CORO_EXECUTE_SLF_XS (slf_init_cede_to); |
3394 |
|
3395 |
void |
3396 |
cede (...) |
3397 |
CODE: |
3398 |
CORO_EXECUTE_SLF_XS (slf_init_cede); |
3399 |
|
3400 |
void |
3401 |
cede_notself (...) |
3402 |
CODE: |
3403 |
CORO_EXECUTE_SLF_XS (slf_init_cede_notself); |
3404 |
|
3405 |
void |
3406 |
_set_current (SV *current) |
3407 |
PROTOTYPE: $ |
3408 |
CODE: |
3409 |
SvREFCNT_dec (SvRV (coro_current)); |
3410 |
SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
3411 |
|
3412 |
void |
3413 |
_set_readyhook (SV *hook) |
3414 |
PROTOTYPE: $ |
3415 |
CODE: |
3416 |
SvREFCNT_dec (coro_readyhook); |
3417 |
SvGETMAGIC (hook); |
3418 |
if (SvOK (hook)) |
3419 |
{ |
3420 |
coro_readyhook = newSVsv (hook); |
3421 |
CORO_READYHOOK = invoke_sv_ready_hook_helper; |
3422 |
} |
3423 |
else |
3424 |
{ |
3425 |
coro_readyhook = 0; |
3426 |
CORO_READYHOOK = 0; |
3427 |
} |
3428 |
|
3429 |
int |
3430 |
prio (Coro::State coro, int newprio = 0) |
3431 |
PROTOTYPE: $;$ |
3432 |
ALIAS: |
3433 |
nice = 1 |
3434 |
CODE: |
3435 |
{ |
3436 |
RETVAL = coro->prio; |
3437 |
|
3438 |
if (items > 1) |
3439 |
{ |
3440 |
if (ix) |
3441 |
newprio = coro->prio - newprio; |
3442 |
|
3443 |
if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN; |
3444 |
if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX; |
3445 |
|
3446 |
coro->prio = newprio; |
3447 |
} |
3448 |
} |
3449 |
OUTPUT: |
3450 |
RETVAL |
3451 |
|
3452 |
SV * |
3453 |
ready (SV *self) |
3454 |
PROTOTYPE: $ |
3455 |
CODE: |
3456 |
RETVAL = boolSV (api_ready (aTHX_ self)); |
3457 |
OUTPUT: |
3458 |
RETVAL |
3459 |
|
3460 |
int |
3461 |
nready (...) |
3462 |
PROTOTYPE: |
3463 |
CODE: |
3464 |
RETVAL = coro_nready; |
3465 |
OUTPUT: |
3466 |
RETVAL |
3467 |
|
3468 |
void |
3469 |
suspend (Coro::State self) |
3470 |
PROTOTYPE: $ |
3471 |
CODE: |
3472 |
self->flags |= CF_SUSPENDED; |
3473 |
|
3474 |
void |
3475 |
resume (Coro::State self) |
3476 |
PROTOTYPE: $ |
3477 |
CODE: |
3478 |
self->flags &= ~CF_SUSPENDED; |
3479 |
|
3480 |
void |
3481 |
_pool_handler (...) |
3482 |
CODE: |
3483 |
CORO_EXECUTE_SLF_XS (slf_init_pool_handler); |
3484 |
|
3485 |
void |
3486 |
async_pool (SV *cv, ...) |
3487 |
PROTOTYPE: &@ |
3488 |
PPCODE: |
3489 |
{ |
3490 |
HV *hv = (HV *)av_pop (av_async_pool); |
3491 |
AV *av = newAV (); |
3492 |
SV *cb = ST (0); |
3493 |
int i; |
3494 |
|
3495 |
av_extend (av, items - 2); |
3496 |
for (i = 1; i < items; ++i) |
3497 |
av_push (av, SvREFCNT_inc_NN (ST (i))); |
3498 |
|
3499 |
if ((SV *)hv == &PL_sv_undef) |
3500 |
{ |
3501 |
PUSHMARK (SP); |
3502 |
EXTEND (SP, 2); |
3503 |
PUSHs (sv_Coro); |
3504 |
PUSHs ((SV *)cv_pool_handler); |
3505 |
PUTBACK; |
3506 |
call_sv ((SV *)cv_coro_state_new, G_SCALAR); |
3507 |
SPAGAIN; |
3508 |
|
3509 |
hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); |
3510 |
} |
3511 |
|
3512 |
{ |
3513 |
struct coro *coro = SvSTATE_hv (hv); |
3514 |
|
3515 |
assert (!coro->invoke_cb); |
3516 |
assert (!coro->invoke_av); |
3517 |
coro->invoke_cb = SvREFCNT_inc (cb); |
3518 |
coro->invoke_av = av; |
3519 |
} |
3520 |
|
3521 |
api_ready (aTHX_ (SV *)hv); |
3522 |
|
3523 |
if (GIMME_V != G_VOID) |
3524 |
XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); |
3525 |
else |
3526 |
SvREFCNT_dec (hv); |
3527 |
} |
3528 |
|
3529 |
SV * |
3530 |
rouse_cb () |
3531 |
PROTOTYPE: |
3532 |
CODE: |
3533 |
RETVAL = coro_new_rouse_cb (aTHX); |
3534 |
OUTPUT: |
3535 |
RETVAL |
3536 |
|
3537 |
void |
3538 |
rouse_wait (...) |
3539 |
PROTOTYPE: ;$ |
3540 |
PPCODE: |
3541 |
CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); |
3542 |
|
3543 |
void |
3544 |
on_enter (SV *block) |
3545 |
ALIAS: |
3546 |
on_leave = 1 |
3547 |
PROTOTYPE: & |
3548 |
CODE: |
3549 |
{ |
3550 |
struct coro *coro = SvSTATE_current; |
3551 |
AV **avp = ix ? &coro->on_leave : &coro->on_enter; |
3552 |
|
3553 |
block = s_get_cv_croak (block); |
3554 |
|
3555 |
if (!*avp) |
3556 |
*avp = newAV (); |
3557 |
|
3558 |
av_push (*avp, SvREFCNT_inc (block)); |
3559 |
|
3560 |
if (!ix) |
3561 |
on_enterleave_call (aTHX_ block); |
3562 |
|
3563 |
LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */ |
3564 |
SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro); |
3565 |
ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */ |
3566 |
} |
3567 |
|
3568 |
|
3569 |
MODULE = Coro::State PACKAGE = PerlIO::cede |
3570 |
|
3571 |
BOOT: |
3572 |
PerlIO_define_layer (aTHX_ &PerlIO_cede); |
3573 |
|
3574 |
|
3575 |
MODULE = Coro::State PACKAGE = Coro::Semaphore |
3576 |
|
3577 |
SV * |
3578 |
new (SV *klass, SV *count = 0) |
3579 |
CODE: |
3580 |
{ |
3581 |
int semcnt = 1; |
3582 |
|
3583 |
if (count) |
3584 |
{ |
3585 |
SvGETMAGIC (count); |
3586 |
|
3587 |
if (SvOK (count)) |
3588 |
semcnt = SvIV (count); |
3589 |
} |
3590 |
|
3591 |
RETVAL = sv_bless ( |
3592 |
coro_waitarray_new (aTHX_ semcnt), |
3593 |
GvSTASH (CvGV (cv)) |
3594 |
); |
3595 |
} |
3596 |
OUTPUT: |
3597 |
RETVAL |
3598 |
|
3599 |
# helper for Coro::Channel and others |
3600 |
SV * |
3601 |
_alloc (int count) |
3602 |
CODE: |
3603 |
RETVAL = coro_waitarray_new (aTHX_ count); |
3604 |
OUTPUT: |
3605 |
RETVAL |
3606 |
|
3607 |
SV * |
3608 |
count (SV *self) |
3609 |
CODE: |
3610 |
RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
3611 |
OUTPUT: |
3612 |
RETVAL |
3613 |
|
3614 |
void |
3615 |
up (SV *self, int adjust = 1) |
3616 |
ALIAS: |
3617 |
adjust = 1 |
3618 |
CODE: |
3619 |
coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); |
3620 |
|
3621 |
void |
3622 |
down (...) |
3623 |
CODE: |
3624 |
CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
3625 |
|
3626 |
void |
3627 |
wait (...) |
3628 |
CODE: |
3629 |
CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); |
3630 |
|
3631 |
void |
3632 |
try (SV *self) |
3633 |
PPCODE: |
3634 |
{ |
3635 |
AV *av = (AV *)SvRV (self); |
3636 |
SV *count_sv = AvARRAY (av)[0]; |
3637 |
IV count = SvIVX (count_sv); |
3638 |
|
3639 |
if (count > 0) |
3640 |
{ |
3641 |
--count; |
3642 |
SvIVX (count_sv) = count; |
3643 |
XSRETURN_YES; |
3644 |
} |
3645 |
else |
3646 |
XSRETURN_NO; |
3647 |
} |
3648 |
|
3649 |
void |
3650 |
waiters (SV *self) |
3651 |
PPCODE: |
3652 |
{ |
3653 |
AV *av = (AV *)SvRV (self); |
3654 |
int wcount = AvFILLp (av) + 1 - 1; |
3655 |
|
3656 |
if (GIMME_V == G_SCALAR) |
3657 |
XPUSHs (sv_2mortal (newSViv (wcount))); |
3658 |
else |
3659 |
{ |
3660 |
int i; |
3661 |
EXTEND (SP, wcount); |
3662 |
for (i = 1; i <= wcount; ++i) |
3663 |
PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); |
3664 |
} |
3665 |
} |
3666 |
|
3667 |
MODULE = Coro::State PACKAGE = Coro::SemaphoreSet |
3668 |
|
3669 |
void |
3670 |
_may_delete (SV *sem, int count, int extra_refs) |
3671 |
PPCODE: |
3672 |
{ |
3673 |
AV *av = (AV *)SvRV (sem); |
3674 |
|
3675 |
if (SvREFCNT ((SV *)av) == 1 + extra_refs |
3676 |
&& AvFILLp (av) == 0 /* no waiters, just count */ |
3677 |
&& SvIV (AvARRAY (av)[0]) == count) |
3678 |
XSRETURN_YES; |
3679 |
|
3680 |
XSRETURN_NO; |
3681 |
} |
3682 |
|
3683 |
MODULE = Coro::State PACKAGE = Coro::Signal |
3684 |
|
3685 |
SV * |
3686 |
new (SV *klass) |
3687 |
CODE: |
3688 |
RETVAL = sv_bless ( |
3689 |
coro_waitarray_new (aTHX_ 0), |
3690 |
GvSTASH (CvGV (cv)) |
3691 |
); |
3692 |
OUTPUT: |
3693 |
RETVAL |
3694 |
|
3695 |
void |
3696 |
wait (...) |
3697 |
CODE: |
3698 |
CORO_EXECUTE_SLF_XS (slf_init_signal_wait); |
3699 |
|
3700 |
void |
3701 |
broadcast (SV *self) |
3702 |
CODE: |
3703 |
{ |
3704 |
AV *av = (AV *)SvRV (self); |
3705 |
coro_signal_wake (aTHX_ av, AvFILLp (av)); |
3706 |
} |
3707 |
|
3708 |
void |
3709 |
send (SV *self) |
3710 |
CODE: |
3711 |
{ |
3712 |
AV *av = (AV *)SvRV (self); |
3713 |
|
3714 |
if (AvFILLp (av)) |
3715 |
coro_signal_wake (aTHX_ av, 1); |
3716 |
else |
3717 |
SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ |
3718 |
} |
3719 |
|
3720 |
IV |
3721 |
awaited (SV *self) |
3722 |
CODE: |
3723 |
RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; |
3724 |
OUTPUT: |
3725 |
RETVAL |
3726 |
|
3727 |
|
3728 |
MODULE = Coro::State PACKAGE = Coro::AnyEvent |
3729 |
|
3730 |
BOOT: |
3731 |
sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
3732 |
|
3733 |
void |
3734 |
_schedule (...) |
3735 |
CODE: |
3736 |
{ |
3737 |
static int incede; |
3738 |
|
3739 |
api_cede_notself (aTHX); |
3740 |
|
3741 |
++incede; |
3742 |
while (coro_nready >= incede && api_cede (aTHX)) |
3743 |
; |
3744 |
|
3745 |
sv_setsv (sv_activity, &PL_sv_undef); |
3746 |
if (coro_nready >= incede) |
3747 |
{ |
3748 |
PUSHMARK (SP); |
3749 |
PUTBACK; |
3750 |
call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
3751 |
} |
3752 |
|
3753 |
--incede; |
3754 |
} |
3755 |
|
3756 |
|
3757 |
MODULE = Coro::State PACKAGE = Coro::AIO |
3758 |
|
3759 |
void |
3760 |
_register (char *target, char *proto, SV *req) |
3761 |
CODE: |
3762 |
{ |
3763 |
SV *req_cv = s_get_cv_croak (req); |
3764 |
/* newXSproto doesn't return the CV on 5.8 */ |
3765 |
CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); |
3766 |
sv_setpv ((SV *)slf_cv, proto); |
3767 |
sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); |
3768 |
} |
3769 |
|
3770 |
MODULE = Coro::State PACKAGE = Coro::Select |
3771 |
|
3772 |
void |
3773 |
patch_pp_sselect () |
3774 |
CODE: |
3775 |
if (!coro_old_pp_sselect) |
3776 |
{ |
3777 |
coro_select_select = (SV *)get_cv ("Coro::Select::select", 0); |
3778 |
coro_old_pp_sselect = PL_ppaddr [OP_SSELECT]; |
3779 |
PL_ppaddr [OP_SSELECT] = coro_pp_sselect; |
3780 |
} |
3781 |
|
3782 |
void |
3783 |
unpatch_pp_sselect () |
3784 |
CODE: |
3785 |
if (coro_old_pp_sselect) |
3786 |
{ |
3787 |
PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect; |
3788 |
coro_old_pp_sselect = 0; |
3789 |
} |
3790 |
|
3791 |
|