1 |
root |
1.18 |
/* most win32 perls are beyond fixing, requiring dTHX */ |
2 |
|
|
/* even for ISO-C functions such as malloc. avoid! avoid! avoid! */ |
3 |
root |
1.19 |
/* and fial to define numerous symbols, but still overrwide them */ |
4 |
|
|
/* with non-working versions (e.g. setjmp). */ |
5 |
|
|
#ifdef _WIN32 |
6 |
|
|
# define PERL_CORE 1 |
7 |
|
|
#else |
8 |
root |
1.18 |
# define PERL_NO_GET_CONTEXT |
9 |
|
|
#endif |
10 |
root |
1.1 |
|
11 |
|
|
#include "EXTERN.h" |
12 |
|
|
#include "perl.h" |
13 |
|
|
#include "XSUB.h" |
14 |
|
|
|
15 |
root |
1.7 |
#define X_STACKSIZE 1024 * sizeof (void *) |
16 |
root |
1.1 |
|
17 |
|
|
#include "CoroAPI.h" |
18 |
|
|
#include "perlmulticore.h" |
19 |
|
|
#include "schmorp.h" |
20 |
|
|
#include "xthread.h" |
21 |
|
|
|
22 |
|
|
#ifdef _WIN32 |
23 |
root |
1.18 |
#ifndef sigset_t |
24 |
|
|
#define sigset_t int |
25 |
|
|
#endif |
26 |
root |
1.1 |
#endif |
27 |
|
|
|
28 |
root |
1.8 |
#ifndef SvREFCNT_dec_NN |
29 |
|
|
#define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv) |
30 |
|
|
#endif |
31 |
|
|
|
32 |
|
|
#ifndef SvREFCNT_inc_NN |
33 |
|
|
#define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
34 |
|
|
#endif |
35 |
|
|
|
36 |
root |
1.16 |
#define RECURSION_CHECK 0 |
37 |
|
|
|
38 |
root |
1.12 |
static X_TLS_DECLARE(current_key); |
39 |
root |
1.16 |
#if RECURSION_CHECK |
40 |
|
|
static X_TLS_DECLARE(check_key); |
41 |
|
|
#endif |
42 |
|
|
|
43 |
root |
1.1 |
|
44 |
|
|
static s_epipe ep; |
45 |
|
|
static void *perl_thx; |
46 |
|
|
static sigset_t cursigset, fullsigset; |
47 |
|
|
|
48 |
root |
1.6 |
static int global_enable = 0; |
49 |
root |
1.4 |
static int thread_enable; /* 0 undefined, 1 disabled, 2 enabled */ |
50 |
|
|
|
51 |
root |
1.6 |
/* assigned to a thread for each release/acquire */ |
52 |
root |
1.1 |
struct tctx |
53 |
|
|
{ |
54 |
|
|
void *coro; |
55 |
root |
1.6 |
int wait_f; |
56 |
root |
1.9 |
xcond_t acquire_c; |
57 |
root |
1.11 |
int jeret; |
58 |
root |
1.1 |
}; |
59 |
|
|
|
60 |
|
|
static struct tctx *tctx_free; |
61 |
|
|
|
62 |
|
|
static struct tctx * |
63 |
|
|
tctx_get (void) |
64 |
|
|
{ |
65 |
|
|
struct tctx *ctx; |
66 |
|
|
|
67 |
|
|
if (!tctx_free) |
68 |
root |
1.3 |
{ |
69 |
|
|
ctx = malloc (sizeof (*tctx_free)); |
70 |
root |
1.9 |
X_COND_CREATE (ctx->acquire_c); |
71 |
root |
1.3 |
} |
72 |
root |
1.1 |
else |
73 |
|
|
{ |
74 |
|
|
ctx = tctx_free; |
75 |
|
|
tctx_free = tctx_free->coro; |
76 |
|
|
} |
77 |
|
|
|
78 |
|
|
return ctx; |
79 |
|
|
} |
80 |
|
|
|
81 |
|
|
static void |
82 |
|
|
tctx_put (struct tctx *ctx) |
83 |
|
|
{ |
84 |
|
|
ctx->coro = tctx_free; |
85 |
|
|
tctx_free = ctx; |
86 |
|
|
} |
87 |
|
|
|
88 |
root |
1.9 |
/* a stack of tctxs */ |
89 |
|
|
struct tctxs |
90 |
|
|
{ |
91 |
|
|
struct tctx **ctxs; |
92 |
|
|
int cur, max; |
93 |
|
|
}; |
94 |
|
|
|
95 |
|
|
static struct tctx * |
96 |
|
|
tctxs_get (struct tctxs *ctxs) |
97 |
|
|
{ |
98 |
|
|
return ctxs->ctxs[--ctxs->cur]; |
99 |
|
|
} |
100 |
|
|
|
101 |
|
|
static void |
102 |
|
|
tctxs_put (struct tctxs *ctxs, struct tctx *ctx) |
103 |
|
|
{ |
104 |
|
|
if (ctxs->cur >= ctxs->max) |
105 |
|
|
{ |
106 |
|
|
ctxs->max = ctxs->max ? ctxs->max * 2 : 16; |
107 |
|
|
ctxs->ctxs = realloc (ctxs->ctxs, ctxs->max * sizeof (ctxs->ctxs[0])); |
108 |
|
|
} |
109 |
|
|
|
110 |
|
|
ctxs->ctxs[ctxs->cur++] = ctx; |
111 |
|
|
} |
112 |
|
|
|
113 |
|
|
static xmutex_t release_m = X_MUTEX_INIT; |
114 |
|
|
static xcond_t release_c = X_COND_INIT; |
115 |
|
|
static struct tctxs releasers; |
116 |
|
|
static int idle; |
117 |
|
|
static int min_idle = 1; |
118 |
|
|
static int curthreads, max_threads = 1; /* protected by release_m */ |
119 |
|
|
|
120 |
|
|
static xmutex_t acquire_m = X_MUTEX_INIT; |
121 |
|
|
static struct tctxs acquirers; |
122 |
|
|
|
123 |
root |
1.1 |
X_THREAD_PROC(thread_proc) |
124 |
|
|
{ |
125 |
|
|
PERL_SET_CONTEXT (perl_thx); |
126 |
|
|
|
127 |
|
|
{ |
128 |
root |
1.17 |
dTHXa (perl_thx); |
129 |
root |
1.11 |
dJMPENV; |
130 |
root |
1.1 |
struct tctx *ctx; |
131 |
root |
1.11 |
int catchret; |
132 |
root |
1.1 |
|
133 |
root |
1.9 |
X_LOCK (release_m); |
134 |
root |
1.6 |
|
135 |
root |
1.1 |
for (;;) |
136 |
|
|
{ |
137 |
root |
1.9 |
while (!releasers.cur) |
138 |
root |
1.6 |
if (idle <= min_idle || 1) |
139 |
root |
1.9 |
X_COND_WAIT (release_c, release_m); |
140 |
root |
1.6 |
else |
141 |
|
|
{ |
142 |
|
|
struct timespec ts = { time (0) + idle - min_idle, 0 }; |
143 |
|
|
|
144 |
root |
1.9 |
if (X_COND_TIMEDWAIT (release_c, release_m, ts) == ETIMEDOUT) |
145 |
|
|
if (idle > min_idle && !releasers.cur) |
146 |
root |
1.6 |
break; |
147 |
|
|
} |
148 |
|
|
|
149 |
root |
1.9 |
ctx = tctxs_get (&releasers); |
150 |
root |
1.6 |
--idle; |
151 |
root |
1.9 |
X_UNLOCK (release_m); |
152 |
root |
1.3 |
|
153 |
root |
1.6 |
if (!ctx) /* timed out? */ |
154 |
|
|
break; |
155 |
|
|
|
156 |
root |
1.1 |
pthread_sigmask (SIG_SETMASK, &cursigset, 0); |
157 |
root |
1.11 |
JMPENV_PUSH (ctx->jeret); |
158 |
root |
1.1 |
|
159 |
root |
1.11 |
if (!ctx->jeret) |
160 |
|
|
while (ctx->coro) |
161 |
|
|
CORO_SCHEDULE; |
162 |
root |
1.1 |
|
163 |
root |
1.11 |
JMPENV_POP; |
164 |
root |
1.3 |
pthread_sigmask (SIG_SETMASK, &fullsigset, &cursigset); |
165 |
|
|
|
166 |
root |
1.9 |
X_LOCK (acquire_m); |
167 |
root |
1.3 |
ctx->wait_f = 1; |
168 |
root |
1.9 |
X_COND_SIGNAL (ctx->acquire_c); |
169 |
|
|
X_UNLOCK (acquire_m); |
170 |
root |
1.1 |
|
171 |
root |
1.9 |
X_LOCK (release_m); |
172 |
root |
1.6 |
++idle; |
173 |
root |
1.1 |
} |
174 |
|
|
} |
175 |
|
|
} |
176 |
|
|
|
177 |
|
|
static void |
178 |
|
|
start_thread (void) |
179 |
|
|
{ |
180 |
|
|
xthread_t tid; |
181 |
|
|
|
182 |
root |
1.9 |
if (curthreads >= max_threads && 0) |
183 |
|
|
return; |
184 |
|
|
|
185 |
|
|
++curthreads; |
186 |
root |
1.6 |
++idle; |
187 |
root |
1.1 |
xthread_create (&tid, thread_proc, 0); |
188 |
|
|
} |
189 |
|
|
|
190 |
|
|
static void |
191 |
|
|
pmapi_release (void) |
192 |
|
|
{ |
193 |
root |
1.16 |
#if RECURSION_CHECK |
194 |
|
|
if (X_TLS_GET (check_key)) |
195 |
|
|
croak ("perlinterp_release () called without valid perl context"); |
196 |
|
|
|
197 |
|
|
X_TLS_SET (check_key, &check_key); |
198 |
|
|
#endif |
199 |
|
|
|
200 |
root |
1.13 |
if (! ((thread_enable ? thread_enable : global_enable) & 1)) |
201 |
root |
1.4 |
{ |
202 |
root |
1.12 |
X_TLS_SET (current_key, 0); |
203 |
root |
1.4 |
return; |
204 |
|
|
} |
205 |
|
|
|
206 |
root |
1.1 |
struct tctx *ctx = tctx_get (); |
207 |
|
|
ctx->coro = SvREFCNT_inc_NN (CORO_CURRENT); |
208 |
root |
1.3 |
ctx->wait_f = 0; |
209 |
|
|
|
210 |
root |
1.12 |
X_TLS_SET (current_key, ctx); |
211 |
root |
1.1 |
pthread_sigmask (SIG_SETMASK, &fullsigset, &cursigset); |
212 |
|
|
|
213 |
root |
1.9 |
X_LOCK (release_m); |
214 |
root |
1.6 |
|
215 |
|
|
if (idle <= min_idle) |
216 |
root |
1.1 |
start_thread (); |
217 |
|
|
|
218 |
root |
1.9 |
tctxs_put (&releasers, ctx); |
219 |
|
|
X_COND_SIGNAL (release_c); |
220 |
|
|
|
221 |
|
|
while (!idle && releasers.cur) |
222 |
|
|
{ |
223 |
|
|
X_UNLOCK (release_m); |
224 |
|
|
X_LOCK (release_m); |
225 |
|
|
} |
226 |
root |
1.6 |
|
227 |
root |
1.9 |
X_UNLOCK (release_m); |
228 |
root |
1.1 |
} |
229 |
|
|
|
230 |
|
|
static void |
231 |
|
|
pmapi_acquire (void) |
232 |
|
|
{ |
233 |
root |
1.11 |
int jeret; |
234 |
root |
1.12 |
struct tctx *ctx = X_TLS_GET (current_key); |
235 |
root |
1.1 |
|
236 |
root |
1.16 |
#if RECURSION_CHECK |
237 |
|
|
if (X_TLS_GET (check_key) != &check_key) |
238 |
|
|
croak ("perlinterp_acquire () called with valid perl context"); |
239 |
|
|
|
240 |
|
|
X_TLS_SET (check_key, 0); |
241 |
|
|
#endif |
242 |
|
|
|
243 |
root |
1.4 |
if (!ctx) |
244 |
|
|
return; |
245 |
|
|
|
246 |
root |
1.9 |
X_LOCK (acquire_m); |
247 |
root |
1.1 |
|
248 |
root |
1.9 |
tctxs_put (&acquirers, ctx); |
249 |
root |
1.1 |
|
250 |
|
|
s_epipe_signal (&ep); |
251 |
root |
1.3 |
while (!ctx->wait_f) |
252 |
root |
1.9 |
X_COND_WAIT (ctx->acquire_c, acquire_m); |
253 |
|
|
X_UNLOCK (acquire_m); |
254 |
root |
1.1 |
|
255 |
root |
1.11 |
jeret = ctx->jeret; |
256 |
root |
1.1 |
tctx_put (ctx); |
257 |
|
|
pthread_sigmask (SIG_SETMASK, &cursigset, 0); |
258 |
root |
1.11 |
|
259 |
|
|
if (jeret) |
260 |
root |
1.17 |
{ |
261 |
|
|
dTHX; |
262 |
|
|
JMPENV_JUMP (jeret); |
263 |
|
|
} |
264 |
root |
1.1 |
} |
265 |
|
|
|
266 |
root |
1.4 |
static void |
267 |
root |
1.6 |
set_thread_enable (pTHX_ void *arg) |
268 |
root |
1.4 |
{ |
269 |
root |
1.6 |
thread_enable = PTR2IV (arg); |
270 |
root |
1.4 |
} |
271 |
|
|
|
272 |
root |
1.1 |
MODULE = Coro::Multicore PACKAGE = Coro::Multicore |
273 |
|
|
|
274 |
|
|
PROTOTYPES: DISABLE |
275 |
|
|
|
276 |
|
|
BOOT: |
277 |
|
|
{ |
278 |
root |
1.16 |
#ifndef _WIN32 |
279 |
root |
1.1 |
sigfillset (&fullsigset); |
280 |
root |
1.16 |
#endif |
281 |
root |
1.1 |
|
282 |
root |
1.12 |
X_TLS_INIT (current_key); |
283 |
root |
1.16 |
#if RECURSION_CHECK |
284 |
|
|
X_TLS_INIT (check_key); |
285 |
|
|
#endif |
286 |
root |
1.1 |
|
287 |
|
|
if (s_epipe_new (&ep)) |
288 |
|
|
croak ("Coro::Multicore: unable to initialise event pipe.\n"); |
289 |
|
|
|
290 |
|
|
perl_thx = PERL_GET_CONTEXT; |
291 |
|
|
|
292 |
|
|
I_CORO_API ("Coro::Multicore"); |
293 |
|
|
|
294 |
root |
1.9 |
X_LOCK (release_m); |
295 |
root |
1.6 |
while (idle < min_idle) |
296 |
|
|
start_thread (); |
297 |
root |
1.9 |
X_UNLOCK (release_m); |
298 |
root |
1.6 |
|
299 |
root |
1.14 |
/* not perfectly efficient to do it this way, but it is simple */ |
300 |
|
|
perl_multicore_init (); /* calls release */ |
301 |
root |
1.1 |
perl_multicore_api->pmapi_release = pmapi_release; |
302 |
|
|
perl_multicore_api->pmapi_acquire = pmapi_acquire; |
303 |
|
|
} |
304 |
|
|
|
305 |
root |
1.4 |
bool |
306 |
|
|
enable (bool enable = NO_INIT) |
307 |
|
|
CODE: |
308 |
|
|
RETVAL = global_enable; |
309 |
|
|
if (items) |
310 |
|
|
global_enable = enable; |
311 |
|
|
OUTPUT: |
312 |
|
|
RETVAL |
313 |
|
|
|
314 |
|
|
void |
315 |
|
|
scoped_enable () |
316 |
|
|
CODE: |
317 |
|
|
LEAVE; /* see Guard.xs */ |
318 |
root |
1.6 |
CORO_ENTERLEAVE_SCOPE_HOOK (set_thread_enable, (void *)1, set_thread_enable, (void *)0); |
319 |
root |
1.4 |
ENTER; /* see Guard.xs */ |
320 |
|
|
|
321 |
|
|
void |
322 |
|
|
scoped_disable () |
323 |
|
|
CODE: |
324 |
|
|
LEAVE; /* see Guard.xs */ |
325 |
root |
1.6 |
CORO_ENTERLEAVE_SCOPE_HOOK (set_thread_enable, (void *)2, set_thread_enable, (void *)0); |
326 |
root |
1.4 |
ENTER; /* see Guard.xs */ |
327 |
|
|
|
328 |
root |
1.1 |
U32 |
329 |
root |
1.6 |
min_idle_threads (U32 min = NO_INIT) |
330 |
root |
1.1 |
CODE: |
331 |
root |
1.9 |
X_LOCK (acquire_m); |
332 |
root |
1.6 |
RETVAL = min_idle; |
333 |
root |
1.1 |
if (items) |
334 |
root |
1.6 |
min_idle = min; |
335 |
root |
1.9 |
X_UNLOCK (acquire_m); |
336 |
root |
1.1 |
OUTPUT: |
337 |
|
|
RETVAL |
338 |
|
|
|
339 |
|
|
|
340 |
|
|
int |
341 |
|
|
fd () |
342 |
|
|
CODE: |
343 |
|
|
RETVAL = s_epipe_fd (&ep); |
344 |
|
|
OUTPUT: |
345 |
|
|
RETVAL |
346 |
|
|
|
347 |
|
|
void |
348 |
|
|
poll (...) |
349 |
|
|
CODE: |
350 |
|
|
s_epipe_drain (&ep); |
351 |
root |
1.9 |
X_LOCK (acquire_m); |
352 |
|
|
while (acquirers.cur) |
353 |
root |
1.1 |
{ |
354 |
root |
1.9 |
struct tctx *ctx = tctxs_get (&acquirers); |
355 |
root |
1.1 |
CORO_READY ((SV *)ctx->coro); |
356 |
|
|
SvREFCNT_dec_NN ((SV *)ctx->coro); |
357 |
|
|
ctx->coro = 0; |
358 |
|
|
} |
359 |
root |
1.9 |
X_UNLOCK (acquire_m); |
360 |
root |
1.1 |
|
361 |
|
|
void |
362 |
root |
1.2 |
sleep (NV seconds) |
363 |
root |
1.1 |
CODE: |
364 |
|
|
perlinterp_release (); |
365 |
root |
1.2 |
usleep (seconds * 1e6); |
366 |
root |
1.1 |
perlinterp_acquire (); |
367 |
root |
1.2 |
|