1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
11 | * this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
12 | * |
12 | * |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
… | |
… | |
42 | # ifdef EV_CONFIG_H |
42 | # ifdef EV_CONFIG_H |
43 | # include EV_CONFIG_H |
43 | # include EV_CONFIG_H |
44 | # else |
44 | # else |
45 | # include "config.h" |
45 | # include "config.h" |
46 | # endif |
46 | # endif |
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|
47 | |
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|
48 | #if HAVE_FLOOR |
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|
49 | # ifndef EV_USE_FLOOR |
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|
50 | # define EV_USE_FLOOR 1 |
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|
51 | # endif |
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|
52 | #endif |
47 | |
53 | |
48 | # if HAVE_CLOCK_SYSCALL |
54 | # if HAVE_CLOCK_SYSCALL |
49 | # ifndef EV_USE_CLOCK_SYSCALL |
55 | # ifndef EV_USE_CLOCK_SYSCALL |
50 | # define EV_USE_CLOCK_SYSCALL 1 |
56 | # define EV_USE_CLOCK_SYSCALL 1 |
51 | # ifndef EV_USE_REALTIME |
57 | # ifndef EV_USE_REALTIME |
… | |
… | |
156 | # define EV_USE_EVENTFD 0 |
162 | # define EV_USE_EVENTFD 0 |
157 | # endif |
163 | # endif |
158 | |
164 | |
159 | #endif |
165 | #endif |
160 | |
166 | |
161 | #include <math.h> |
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|
162 | #include <stdlib.h> |
167 | #include <stdlib.h> |
163 | #include <string.h> |
168 | #include <string.h> |
164 | #include <fcntl.h> |
169 | #include <fcntl.h> |
165 | #include <stddef.h> |
170 | #include <stddef.h> |
166 | |
171 | |
… | |
… | |
232 | /* to make it compile regardless, just remove the above line, */ |
237 | /* to make it compile regardless, just remove the above line, */ |
233 | /* but consider reporting it, too! :) */ |
238 | /* but consider reporting it, too! :) */ |
234 | # define EV_NSIG 65 |
239 | # define EV_NSIG 65 |
235 | #endif |
240 | #endif |
236 | |
241 | |
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|
242 | #ifndef EV_USE_FLOOR |
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|
243 | # define EV_USE_FLOOR 0 |
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|
244 | #endif |
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245 | |
237 | #ifndef EV_USE_CLOCK_SYSCALL |
246 | #ifndef EV_USE_CLOCK_SYSCALL |
238 | # if __linux && __GLIBC__ >= 2 |
247 | # if __linux && __GLIBC__ >= 2 |
239 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
248 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
240 | # else |
249 | # else |
241 | # define EV_USE_CLOCK_SYSCALL 0 |
250 | # define EV_USE_CLOCK_SYSCALL 0 |
… | |
… | |
376 | # undef EV_USE_INOTIFY |
385 | # undef EV_USE_INOTIFY |
377 | # define EV_USE_INOTIFY 0 |
386 | # define EV_USE_INOTIFY 0 |
378 | #endif |
387 | #endif |
379 | |
388 | |
380 | #if !EV_USE_NANOSLEEP |
389 | #if !EV_USE_NANOSLEEP |
381 | # ifndef _WIN32 |
390 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
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|
391 | # if !defined(_WIN32) && !defined(__hpux) |
382 | # include <sys/select.h> |
392 | # include <sys/select.h> |
383 | # endif |
393 | # endif |
384 | #endif |
394 | #endif |
385 | |
395 | |
386 | #if EV_USE_INOTIFY |
396 | #if EV_USE_INOTIFY |
… | |
… | |
442 | #else |
452 | #else |
443 | # define EV_FREQUENT_CHECK do { } while (0) |
453 | # define EV_FREQUENT_CHECK do { } while (0) |
444 | #endif |
454 | #endif |
445 | |
455 | |
446 | /* |
456 | /* |
447 | * This is used to avoid floating point rounding problems. |
457 | * This is used to work around floating point rounding problems. |
448 | * It is added to ev_rt_now when scheduling periodics |
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449 | * to ensure progress, time-wise, even when rounding |
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450 | * errors are against us. |
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|
451 | * This value is good at least till the year 4000. |
458 | * This value is good at least till the year 4000. |
452 | * Better solutions welcome. |
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|
453 | */ |
459 | */ |
454 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
460 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
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|
461 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
455 | |
462 | |
456 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
463 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
457 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
464 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
458 | |
465 | |
459 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
466 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
460 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
467 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
461 | |
468 | |
462 | #if __GNUC__ >= 4 |
469 | /* the following are taken from libecb */ |
463 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
470 | /* ecb.h start */ |
464 | # define noinline __attribute__ ((noinline)) |
471 | |
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|
472 | /* many compilers define _GNUC_ to some versions but then only implement |
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473 | * what their idiot authors think are the "more important" extensions, |
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474 | * causing enourmous grief in return for some better fake benchmark numbers. |
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475 | * or so. |
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476 | * we try to detect these and simply assume they are not gcc - if they have |
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477 | * an issue with that they should have done it right in the first place. |
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478 | */ |
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479 | #ifndef ECB_GCC_VERSION |
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480 | #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) |
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481 | #define ECB_GCC_VERSION(major,minor) 0 |
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482 | #else |
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483 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
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484 | #endif |
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485 | #endif |
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486 | |
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487 | #if __cplusplus |
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488 | #define ecb_inline static inline |
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489 | #elif ECB_GCC_VERSION(2,5) |
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490 | #define ecb_inline static __inline__ |
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491 | #elif ECB_C99 |
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492 | #define ecb_inline static inline |
465 | #else |
493 | #else |
466 | # define expect(expr,value) (expr) |
494 | #define ecb_inline static |
467 | # define noinline |
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468 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
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469 | # define inline |
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470 | # endif |
495 | #endif |
471 | #endif |
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472 | |
496 | |
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497 | #if ECB_GCC_VERSION(3,1) |
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498 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
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499 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
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500 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
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501 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
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502 | #else |
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503 | #define ecb_attribute(attrlist) |
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504 | #define ecb_is_constant(expr) 0 |
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505 | #define ecb_expect(expr,value) (expr) |
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506 | #define ecb_prefetch(addr,rw,locality) |
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507 | #endif |
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508 | |
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509 | #define ecb_noinline ecb_attribute ((__noinline__)) |
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510 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
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511 | #define ecb_unused ecb_attribute ((__unused__)) |
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512 | #define ecb_const ecb_attribute ((__const__)) |
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513 | #define ecb_pure ecb_attribute ((__pure__)) |
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514 | |
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515 | #if ECB_GCC_VERSION(4,3) |
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516 | #define ecb_artificial ecb_attribute ((__artificial__)) |
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517 | #define ecb_hot ecb_attribute ((__hot__)) |
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518 | #define ecb_cold ecb_attribute ((__cold__)) |
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519 | #else |
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520 | #define ecb_artificial |
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521 | #define ecb_hot |
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522 | #define ecb_cold |
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523 | #endif |
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524 | |
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525 | /* put around conditional expressions if you are very sure that the */ |
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526 | /* expression is mostly true or mostly false. note that these return */ |
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527 | /* booleans, not the expression. */ |
473 | #define expect_false(expr) expect ((expr) != 0, 0) |
528 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
474 | #define expect_true(expr) expect ((expr) != 0, 1) |
529 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
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530 | /* ecb.h end */ |
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531 | |
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532 | #define expect_false(cond) ecb_expect_false (cond) |
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533 | #define expect_true(cond) ecb_expect_true (cond) |
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534 | #define noinline ecb_noinline |
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535 | |
475 | #define inline_size static inline |
536 | #define inline_size ecb_inline |
476 | |
537 | |
477 | #if EV_FEATURE_CODE |
538 | #if EV_FEATURE_CODE |
478 | # define inline_speed static inline |
539 | # define inline_speed ecb_inline |
479 | #else |
540 | #else |
480 | # define inline_speed static noinline |
541 | # define inline_speed static noinline |
481 | #endif |
542 | #endif |
482 | |
543 | |
483 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
544 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
… | |
… | |
522 | # include "ev_win32.c" |
583 | # include "ev_win32.c" |
523 | #endif |
584 | #endif |
524 | |
585 | |
525 | /*****************************************************************************/ |
586 | /*****************************************************************************/ |
526 | |
587 | |
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588 | /* define a suitable floor function (only used by periodics atm) */ |
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589 | |
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590 | #if EV_USE_FLOOR |
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591 | # include <math.h> |
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592 | # define ev_floor(v) floor (v) |
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593 | #else |
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594 | |
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595 | #include <float.h> |
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596 | |
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597 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
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598 | static ev_tstamp noinline |
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599 | ev_floor (ev_tstamp v) |
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|
600 | { |
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601 | /* the choice of shift factor is not terribly important */ |
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602 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
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603 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
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604 | #else |
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605 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
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606 | #endif |
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607 | |
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608 | /* argument too large for an unsigned long? */ |
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609 | if (expect_false (v >= shift)) |
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610 | { |
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611 | ev_tstamp f; |
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612 | |
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613 | if (v == v - 1.) |
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614 | return v; /* very large number */ |
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615 | |
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616 | f = shift * ev_floor (v * (1. / shift)); |
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617 | return f + ev_floor (v - f); |
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618 | } |
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619 | |
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620 | /* special treatment for negative args? */ |
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621 | if (expect_false (v < 0.)) |
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622 | { |
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623 | ev_tstamp f = -ev_floor (-v); |
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624 | |
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625 | return f - (f == v ? 0 : 1); |
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626 | } |
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627 | |
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628 | /* fits into an unsigned long */ |
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629 | return (unsigned long)v; |
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630 | } |
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631 | |
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632 | #endif |
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633 | |
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634 | /*****************************************************************************/ |
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635 | |
527 | #ifdef __linux |
636 | #ifdef __linux |
528 | # include <sys/utsname.h> |
637 | # include <sys/utsname.h> |
529 | #endif |
638 | #endif |
530 | |
639 | |
531 | static unsigned int noinline |
640 | static unsigned int noinline ecb_cold |
532 | ev_linux_version (void) |
641 | ev_linux_version (void) |
533 | { |
642 | { |
534 | #ifdef __linux |
643 | #ifdef __linux |
535 | unsigned int v = 0; |
644 | unsigned int v = 0; |
536 | struct utsname buf; |
645 | struct utsname buf; |
… | |
… | |
565 | } |
674 | } |
566 | |
675 | |
567 | /*****************************************************************************/ |
676 | /*****************************************************************************/ |
568 | |
677 | |
569 | #if EV_AVOID_STDIO |
678 | #if EV_AVOID_STDIO |
570 | static void noinline |
679 | static void noinline ecb_cold |
571 | ev_printerr (const char *msg) |
680 | ev_printerr (const char *msg) |
572 | { |
681 | { |
573 | write (STDERR_FILENO, msg, strlen (msg)); |
682 | write (STDERR_FILENO, msg, strlen (msg)); |
574 | } |
683 | } |
575 | #endif |
684 | #endif |
576 | |
685 | |
577 | static void (*syserr_cb)(const char *msg); |
686 | static void (*syserr_cb)(const char *msg); |
578 | |
687 | |
579 | void |
688 | void ecb_cold |
580 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
689 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
581 | { |
690 | { |
582 | syserr_cb = cb; |
691 | syserr_cb = cb; |
583 | } |
692 | } |
584 | |
693 | |
585 | static void noinline |
694 | static void noinline ecb_cold |
586 | ev_syserr (const char *msg) |
695 | ev_syserr (const char *msg) |
587 | { |
696 | { |
588 | if (!msg) |
697 | if (!msg) |
589 | msg = "(libev) system error"; |
698 | msg = "(libev) system error"; |
590 | |
699 | |
591 | if (syserr_cb) |
700 | if (syserr_cb) |
592 | syserr_cb (msg); |
701 | syserr_cb (msg); |
593 | else |
702 | else |
594 | { |
703 | { |
595 | #if EV_AVOID_STDIO |
704 | #if EV_AVOID_STDIO |
596 | const char *err = strerror (errno); |
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597 | |
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598 | ev_printerr (msg); |
705 | ev_printerr (msg); |
599 | ev_printerr (": "); |
706 | ev_printerr (": "); |
600 | ev_printerr (err); |
707 | ev_printerr (strerror (errno)); |
601 | ev_printerr ("\n"); |
708 | ev_printerr ("\n"); |
602 | #else |
709 | #else |
603 | perror (msg); |
710 | perror (msg); |
604 | #endif |
711 | #endif |
605 | abort (); |
712 | abort (); |
… | |
… | |
625 | #endif |
732 | #endif |
626 | } |
733 | } |
627 | |
734 | |
628 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
735 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
629 | |
736 | |
630 | void |
737 | void ecb_cold |
631 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
738 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
632 | { |
739 | { |
633 | alloc = cb; |
740 | alloc = cb; |
634 | } |
741 | } |
635 | |
742 | |
… | |
… | |
639 | ptr = alloc (ptr, size); |
746 | ptr = alloc (ptr, size); |
640 | |
747 | |
641 | if (!ptr && size) |
748 | if (!ptr && size) |
642 | { |
749 | { |
643 | #if EV_AVOID_STDIO |
750 | #if EV_AVOID_STDIO |
644 | ev_printerr ("libev: memory allocation failed, aborting.\n"); |
751 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
645 | #else |
752 | #else |
646 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
753 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
647 | #endif |
754 | #endif |
648 | abort (); |
755 | abort (); |
649 | } |
756 | } |
650 | |
757 | |
651 | return ptr; |
758 | return ptr; |
… | |
… | |
844 | } |
951 | } |
845 | |
952 | |
846 | return ncur; |
953 | return ncur; |
847 | } |
954 | } |
848 | |
955 | |
849 | static noinline void * |
956 | static void * noinline ecb_cold |
850 | array_realloc (int elem, void *base, int *cur, int cnt) |
957 | array_realloc (int elem, void *base, int *cur, int cnt) |
851 | { |
958 | { |
852 | *cur = array_nextsize (elem, *cur, cnt); |
959 | *cur = array_nextsize (elem, *cur, cnt); |
853 | return ev_realloc (base, elem * *cur); |
960 | return ev_realloc (base, elem * *cur); |
854 | } |
961 | } |
… | |
… | |
967 | inline_size void |
1074 | inline_size void |
968 | fd_reify (EV_P) |
1075 | fd_reify (EV_P) |
969 | { |
1076 | { |
970 | int i; |
1077 | int i; |
971 | |
1078 | |
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1079 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
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|
1080 | for (i = 0; i < fdchangecnt; ++i) |
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|
1081 | { |
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|
1082 | int fd = fdchanges [i]; |
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1083 | ANFD *anfd = anfds + fd; |
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|
1084 | |
|
|
1085 | if (anfd->reify & EV__IOFDSET && anfd->head) |
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|
1086 | { |
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1087 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
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|
1088 | |
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|
1089 | if (handle != anfd->handle) |
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|
1090 | { |
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|
1091 | unsigned long arg; |
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1092 | |
|
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1093 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
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1094 | |
|
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1095 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
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1096 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
1097 | anfd->events = 0; |
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|
1098 | anfd->handle = handle; |
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|
1099 | } |
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|
1100 | } |
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|
1101 | } |
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|
1102 | #endif |
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|
1103 | |
972 | for (i = 0; i < fdchangecnt; ++i) |
1104 | for (i = 0; i < fdchangecnt; ++i) |
973 | { |
1105 | { |
974 | int fd = fdchanges [i]; |
1106 | int fd = fdchanges [i]; |
975 | ANFD *anfd = anfds + fd; |
1107 | ANFD *anfd = anfds + fd; |
976 | ev_io *w; |
1108 | ev_io *w; |
… | |
… | |
978 | unsigned char o_events = anfd->events; |
1110 | unsigned char o_events = anfd->events; |
979 | unsigned char o_reify = anfd->reify; |
1111 | unsigned char o_reify = anfd->reify; |
980 | |
1112 | |
981 | anfd->reify = 0; |
1113 | anfd->reify = 0; |
982 | |
1114 | |
983 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
984 | if (o_reify & EV__IOFDSET) |
|
|
985 | { |
|
|
986 | unsigned long arg; |
|
|
987 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
988 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
|
|
989 | printf ("oi %d %x\n", fd, anfd->handle);//D |
|
|
990 | } |
|
|
991 | #endif |
|
|
992 | |
|
|
993 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
1115 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
994 | { |
1116 | { |
995 | anfd->events = 0; |
1117 | anfd->events = 0; |
996 | |
1118 | |
997 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
1119 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
… | |
… | |
1022 | fdchanges [fdchangecnt - 1] = fd; |
1144 | fdchanges [fdchangecnt - 1] = fd; |
1023 | } |
1145 | } |
1024 | } |
1146 | } |
1025 | |
1147 | |
1026 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1148 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1027 | inline_speed void |
1149 | inline_speed void ecb_cold |
1028 | fd_kill (EV_P_ int fd) |
1150 | fd_kill (EV_P_ int fd) |
1029 | { |
1151 | { |
1030 | ev_io *w; |
1152 | ev_io *w; |
1031 | |
1153 | |
1032 | while ((w = (ev_io *)anfds [fd].head)) |
1154 | while ((w = (ev_io *)anfds [fd].head)) |
… | |
… | |
1035 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1157 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1036 | } |
1158 | } |
1037 | } |
1159 | } |
1038 | |
1160 | |
1039 | /* check whether the given fd is actually valid, for error recovery */ |
1161 | /* check whether the given fd is actually valid, for error recovery */ |
1040 | inline_size int |
1162 | inline_size int ecb_cold |
1041 | fd_valid (int fd) |
1163 | fd_valid (int fd) |
1042 | { |
1164 | { |
1043 | #ifdef _WIN32 |
1165 | #ifdef _WIN32 |
1044 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1166 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1045 | #else |
1167 | #else |
1046 | return fcntl (fd, F_GETFD) != -1; |
1168 | return fcntl (fd, F_GETFD) != -1; |
1047 | #endif |
1169 | #endif |
1048 | } |
1170 | } |
1049 | |
1171 | |
1050 | /* called on EBADF to verify fds */ |
1172 | /* called on EBADF to verify fds */ |
1051 | static void noinline |
1173 | static void noinline ecb_cold |
1052 | fd_ebadf (EV_P) |
1174 | fd_ebadf (EV_P) |
1053 | { |
1175 | { |
1054 | int fd; |
1176 | int fd; |
1055 | |
1177 | |
1056 | for (fd = 0; fd < anfdmax; ++fd) |
1178 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
1058 | if (!fd_valid (fd) && errno == EBADF) |
1180 | if (!fd_valid (fd) && errno == EBADF) |
1059 | fd_kill (EV_A_ fd); |
1181 | fd_kill (EV_A_ fd); |
1060 | } |
1182 | } |
1061 | |
1183 | |
1062 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1184 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1063 | static void noinline |
1185 | static void noinline ecb_cold |
1064 | fd_enomem (EV_P) |
1186 | fd_enomem (EV_P) |
1065 | { |
1187 | { |
1066 | int fd; |
1188 | int fd; |
1067 | |
1189 | |
1068 | for (fd = anfdmax; fd--; ) |
1190 | for (fd = anfdmax; fd--; ) |
… | |
… | |
1263 | |
1385 | |
1264 | /*****************************************************************************/ |
1386 | /*****************************************************************************/ |
1265 | |
1387 | |
1266 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1388 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1267 | |
1389 | |
1268 | static void noinline |
1390 | static void noinline ecb_cold |
1269 | evpipe_init (EV_P) |
1391 | evpipe_init (EV_P) |
1270 | { |
1392 | { |
1271 | if (!ev_is_active (&pipe_w)) |
1393 | if (!ev_is_active (&pipe_w)) |
1272 | { |
1394 | { |
1273 | # if EV_USE_EVENTFD |
1395 | # if EV_USE_EVENTFD |
… | |
… | |
1300 | inline_size void |
1422 | inline_size void |
1301 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1423 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1302 | { |
1424 | { |
1303 | if (!*flag) |
1425 | if (!*flag) |
1304 | { |
1426 | { |
1305 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1306 | char dummy; |
|
|
1307 | |
|
|
1308 | *flag = 1; |
1427 | *flag = 1; |
1309 | |
1428 | |
|
|
1429 | pipe_write_skipped = 1; |
|
|
1430 | |
|
|
1431 | if (pipe_write_wanted) |
|
|
1432 | { |
|
|
1433 | int old_errno = errno; /* save errno because write will clobber it */ |
|
|
1434 | char dummy; |
|
|
1435 | |
|
|
1436 | pipe_write_skipped = 0; |
|
|
1437 | |
1310 | #if EV_USE_EVENTFD |
1438 | #if EV_USE_EVENTFD |
1311 | if (evfd >= 0) |
1439 | if (evfd >= 0) |
1312 | { |
1440 | { |
1313 | uint64_t counter = 1; |
1441 | uint64_t counter = 1; |
1314 | write (evfd, &counter, sizeof (uint64_t)); |
1442 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1443 | } |
|
|
1444 | else |
|
|
1445 | #endif |
|
|
1446 | { |
|
|
1447 | /* win32 people keep sending patches that change this write() to send() */ |
|
|
1448 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
|
|
1449 | /* so when you think this write should be a send instead, please find out */ |
|
|
1450 | /* where your send() is from - it's definitely not the microsoft send, and */ |
|
|
1451 | /* tell me. thank you. */ |
|
|
1452 | write (evpipe [1], &dummy, 1); |
|
|
1453 | } |
|
|
1454 | |
|
|
1455 | errno = old_errno; |
1315 | } |
1456 | } |
1316 | else |
|
|
1317 | #endif |
|
|
1318 | /* win32 people keep sending patches that change this write() to send() */ |
|
|
1319 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
|
|
1320 | /* so when you think this write should be a send instead, please find out */ |
|
|
1321 | /* where your send() is from - it's definitely not the microsoft send, and */ |
|
|
1322 | /* tell me. thank you. */ |
|
|
1323 | write (evpipe [1], &dummy, 1); |
|
|
1324 | |
|
|
1325 | errno = old_errno; |
|
|
1326 | } |
1457 | } |
1327 | } |
1458 | } |
1328 | |
1459 | |
1329 | /* called whenever the libev signal pipe */ |
1460 | /* called whenever the libev signal pipe */ |
1330 | /* got some events (signal, async) */ |
1461 | /* got some events (signal, async) */ |
1331 | static void |
1462 | static void |
1332 | pipecb (EV_P_ ev_io *iow, int revents) |
1463 | pipecb (EV_P_ ev_io *iow, int revents) |
1333 | { |
1464 | { |
1334 | int i; |
1465 | int i; |
1335 | |
1466 | |
|
|
1467 | if (revents & EV_READ) |
|
|
1468 | { |
1336 | #if EV_USE_EVENTFD |
1469 | #if EV_USE_EVENTFD |
1337 | if (evfd >= 0) |
1470 | if (evfd >= 0) |
1338 | { |
1471 | { |
1339 | uint64_t counter; |
1472 | uint64_t counter; |
1340 | read (evfd, &counter, sizeof (uint64_t)); |
1473 | read (evfd, &counter, sizeof (uint64_t)); |
1341 | } |
1474 | } |
1342 | else |
1475 | else |
1343 | #endif |
1476 | #endif |
1344 | { |
1477 | { |
1345 | char dummy; |
1478 | char dummy; |
1346 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1479 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1347 | read (evpipe [0], &dummy, 1); |
1480 | read (evpipe [0], &dummy, 1); |
|
|
1481 | } |
1348 | } |
1482 | } |
1349 | |
1483 | |
|
|
1484 | pipe_write_skipped = 0; |
|
|
1485 | |
|
|
1486 | #if EV_SIGNAL_ENABLE |
1350 | if (sig_pending) |
1487 | if (sig_pending) |
1351 | { |
1488 | { |
1352 | sig_pending = 0; |
1489 | sig_pending = 0; |
1353 | |
1490 | |
1354 | for (i = EV_NSIG - 1; i--; ) |
1491 | for (i = EV_NSIG - 1; i--; ) |
1355 | if (expect_false (signals [i].pending)) |
1492 | if (expect_false (signals [i].pending)) |
1356 | ev_feed_signal_event (EV_A_ i + 1); |
1493 | ev_feed_signal_event (EV_A_ i + 1); |
1357 | } |
1494 | } |
|
|
1495 | #endif |
1358 | |
1496 | |
1359 | #if EV_ASYNC_ENABLE |
1497 | #if EV_ASYNC_ENABLE |
1360 | if (async_pending) |
1498 | if (async_pending) |
1361 | { |
1499 | { |
1362 | async_pending = 0; |
1500 | async_pending = 0; |
… | |
… | |
1371 | #endif |
1509 | #endif |
1372 | } |
1510 | } |
1373 | |
1511 | |
1374 | /*****************************************************************************/ |
1512 | /*****************************************************************************/ |
1375 | |
1513 | |
|
|
1514 | void |
|
|
1515 | ev_feed_signal (int signum) |
|
|
1516 | { |
|
|
1517 | #if EV_MULTIPLICITY |
|
|
1518 | EV_P = signals [signum - 1].loop; |
|
|
1519 | |
|
|
1520 | if (!EV_A) |
|
|
1521 | return; |
|
|
1522 | #endif |
|
|
1523 | |
|
|
1524 | evpipe_init (EV_A); |
|
|
1525 | |
|
|
1526 | signals [signum - 1].pending = 1; |
|
|
1527 | evpipe_write (EV_A_ &sig_pending); |
|
|
1528 | } |
|
|
1529 | |
1376 | static void |
1530 | static void |
1377 | ev_sighandler (int signum) |
1531 | ev_sighandler (int signum) |
1378 | { |
1532 | { |
1379 | #if EV_MULTIPLICITY |
|
|
1380 | EV_P = signals [signum - 1].loop; |
|
|
1381 | #endif |
|
|
1382 | |
|
|
1383 | #ifdef _WIN32 |
1533 | #ifdef _WIN32 |
1384 | signal (signum, ev_sighandler); |
1534 | signal (signum, ev_sighandler); |
1385 | #endif |
1535 | #endif |
1386 | |
1536 | |
1387 | signals [signum - 1].pending = 1; |
1537 | ev_feed_signal (signum); |
1388 | evpipe_write (EV_A_ &sig_pending); |
|
|
1389 | } |
1538 | } |
1390 | |
1539 | |
1391 | void noinline |
1540 | void noinline |
1392 | ev_feed_signal_event (EV_P_ int signum) |
1541 | ev_feed_signal_event (EV_P_ int signum) |
1393 | { |
1542 | { |
… | |
… | |
1512 | #endif |
1661 | #endif |
1513 | #if EV_USE_SELECT |
1662 | #if EV_USE_SELECT |
1514 | # include "ev_select.c" |
1663 | # include "ev_select.c" |
1515 | #endif |
1664 | #endif |
1516 | |
1665 | |
1517 | int |
1666 | int ecb_cold |
1518 | ev_version_major (void) |
1667 | ev_version_major (void) |
1519 | { |
1668 | { |
1520 | return EV_VERSION_MAJOR; |
1669 | return EV_VERSION_MAJOR; |
1521 | } |
1670 | } |
1522 | |
1671 | |
1523 | int |
1672 | int ecb_cold |
1524 | ev_version_minor (void) |
1673 | ev_version_minor (void) |
1525 | { |
1674 | { |
1526 | return EV_VERSION_MINOR; |
1675 | return EV_VERSION_MINOR; |
1527 | } |
1676 | } |
1528 | |
1677 | |
1529 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1678 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1530 | int inline_size |
1679 | int inline_size ecb_cold |
1531 | enable_secure (void) |
1680 | enable_secure (void) |
1532 | { |
1681 | { |
1533 | #ifdef _WIN32 |
1682 | #ifdef _WIN32 |
1534 | return 0; |
1683 | return 0; |
1535 | #else |
1684 | #else |
1536 | return getuid () != geteuid () |
1685 | return getuid () != geteuid () |
1537 | || getgid () != getegid (); |
1686 | || getgid () != getegid (); |
1538 | #endif |
1687 | #endif |
1539 | } |
1688 | } |
1540 | |
1689 | |
1541 | unsigned int |
1690 | unsigned int ecb_cold |
1542 | ev_supported_backends (void) |
1691 | ev_supported_backends (void) |
1543 | { |
1692 | { |
1544 | unsigned int flags = 0; |
1693 | unsigned int flags = 0; |
1545 | |
1694 | |
1546 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
1695 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
… | |
… | |
1550 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
1699 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
1551 | |
1700 | |
1552 | return flags; |
1701 | return flags; |
1553 | } |
1702 | } |
1554 | |
1703 | |
1555 | unsigned int |
1704 | unsigned int ecb_cold |
1556 | ev_recommended_backends (void) |
1705 | ev_recommended_backends (void) |
1557 | { |
1706 | { |
1558 | unsigned int flags = ev_supported_backends (); |
1707 | unsigned int flags = ev_supported_backends (); |
1559 | |
1708 | |
1560 | #ifndef __NetBSD__ |
1709 | #ifndef __NetBSD__ |
… | |
… | |
1572 | #endif |
1721 | #endif |
1573 | |
1722 | |
1574 | return flags; |
1723 | return flags; |
1575 | } |
1724 | } |
1576 | |
1725 | |
1577 | unsigned int |
1726 | unsigned int ecb_cold |
1578 | ev_embeddable_backends (void) |
1727 | ev_embeddable_backends (void) |
1579 | { |
1728 | { |
1580 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1729 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1581 | |
1730 | |
1582 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1731 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
… | |
… | |
1627 | ev_userdata (EV_P) |
1776 | ev_userdata (EV_P) |
1628 | { |
1777 | { |
1629 | return userdata; |
1778 | return userdata; |
1630 | } |
1779 | } |
1631 | |
1780 | |
|
|
1781 | void |
1632 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
1782 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
1633 | { |
1783 | { |
1634 | invoke_cb = invoke_pending_cb; |
1784 | invoke_cb = invoke_pending_cb; |
1635 | } |
1785 | } |
1636 | |
1786 | |
|
|
1787 | void |
1637 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
1788 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
1638 | { |
1789 | { |
1639 | release_cb = release; |
1790 | release_cb = release; |
1640 | acquire_cb = acquire; |
1791 | acquire_cb = acquire; |
1641 | } |
1792 | } |
1642 | #endif |
1793 | #endif |
1643 | |
1794 | |
1644 | /* initialise a loop structure, must be zero-initialised */ |
1795 | /* initialise a loop structure, must be zero-initialised */ |
1645 | static void noinline |
1796 | static void noinline ecb_cold |
1646 | loop_init (EV_P_ unsigned int flags) |
1797 | loop_init (EV_P_ unsigned int flags) |
1647 | { |
1798 | { |
1648 | if (!backend) |
1799 | if (!backend) |
1649 | { |
1800 | { |
|
|
1801 | origflags = flags; |
|
|
1802 | |
1650 | #if EV_USE_REALTIME |
1803 | #if EV_USE_REALTIME |
1651 | if (!have_realtime) |
1804 | if (!have_realtime) |
1652 | { |
1805 | { |
1653 | struct timespec ts; |
1806 | struct timespec ts; |
1654 | |
1807 | |
… | |
… | |
1676 | if (!(flags & EVFLAG_NOENV) |
1829 | if (!(flags & EVFLAG_NOENV) |
1677 | && !enable_secure () |
1830 | && !enable_secure () |
1678 | && getenv ("LIBEV_FLAGS")) |
1831 | && getenv ("LIBEV_FLAGS")) |
1679 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1832 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1680 | |
1833 | |
1681 | ev_rt_now = ev_time (); |
1834 | ev_rt_now = ev_time (); |
1682 | mn_now = get_clock (); |
1835 | mn_now = get_clock (); |
1683 | now_floor = mn_now; |
1836 | now_floor = mn_now; |
1684 | rtmn_diff = ev_rt_now - mn_now; |
1837 | rtmn_diff = ev_rt_now - mn_now; |
1685 | #if EV_FEATURE_API |
1838 | #if EV_FEATURE_API |
1686 | invoke_cb = ev_invoke_pending; |
1839 | invoke_cb = ev_invoke_pending; |
1687 | #endif |
1840 | #endif |
1688 | |
1841 | |
1689 | io_blocktime = 0.; |
1842 | io_blocktime = 0.; |
1690 | timeout_blocktime = 0.; |
1843 | timeout_blocktime = 0.; |
1691 | backend = 0; |
1844 | backend = 0; |
1692 | backend_fd = -1; |
1845 | backend_fd = -1; |
1693 | sig_pending = 0; |
1846 | sig_pending = 0; |
1694 | #if EV_ASYNC_ENABLE |
1847 | #if EV_ASYNC_ENABLE |
1695 | async_pending = 0; |
1848 | async_pending = 0; |
1696 | #endif |
1849 | #endif |
|
|
1850 | pipe_write_skipped = 0; |
|
|
1851 | pipe_write_wanted = 0; |
1697 | #if EV_USE_INOTIFY |
1852 | #if EV_USE_INOTIFY |
1698 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1853 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1699 | #endif |
1854 | #endif |
1700 | #if EV_USE_SIGNALFD |
1855 | #if EV_USE_SIGNALFD |
1701 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1856 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1702 | #endif |
1857 | #endif |
1703 | |
1858 | |
1704 | if (!(flags & 0x0000ffffU)) |
1859 | if (!(flags & EVBACKEND_MASK)) |
1705 | flags |= ev_recommended_backends (); |
1860 | flags |= ev_recommended_backends (); |
1706 | |
1861 | |
1707 | #if EV_USE_IOCP |
1862 | #if EV_USE_IOCP |
1708 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
1863 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
1709 | #endif |
1864 | #endif |
… | |
… | |
1731 | #endif |
1886 | #endif |
1732 | } |
1887 | } |
1733 | } |
1888 | } |
1734 | |
1889 | |
1735 | /* free up a loop structure */ |
1890 | /* free up a loop structure */ |
1736 | void |
1891 | void ecb_cold |
1737 | ev_loop_destroy (EV_P) |
1892 | ev_loop_destroy (EV_P) |
1738 | { |
1893 | { |
1739 | int i; |
1894 | int i; |
|
|
1895 | |
|
|
1896 | #if EV_MULTIPLICITY |
|
|
1897 | /* mimic free (0) */ |
|
|
1898 | if (!EV_A) |
|
|
1899 | return; |
|
|
1900 | #endif |
1740 | |
1901 | |
1741 | #if EV_CLEANUP_ENABLE |
1902 | #if EV_CLEANUP_ENABLE |
1742 | /* queue cleanup watchers (and execute them) */ |
1903 | /* queue cleanup watchers (and execute them) */ |
1743 | if (expect_false (cleanupcnt)) |
1904 | if (expect_false (cleanupcnt)) |
1744 | { |
1905 | { |
… | |
… | |
1865 | infy_fork (EV_A); |
2026 | infy_fork (EV_A); |
1866 | #endif |
2027 | #endif |
1867 | |
2028 | |
1868 | if (ev_is_active (&pipe_w)) |
2029 | if (ev_is_active (&pipe_w)) |
1869 | { |
2030 | { |
1870 | /* this "locks" the handlers against writing to the pipe */ |
2031 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
1871 | /* while we modify the fd vars */ |
|
|
1872 | sig_pending = 1; |
|
|
1873 | #if EV_ASYNC_ENABLE |
|
|
1874 | async_pending = 1; |
|
|
1875 | #endif |
|
|
1876 | |
2032 | |
1877 | ev_ref (EV_A); |
2033 | ev_ref (EV_A); |
1878 | ev_io_stop (EV_A_ &pipe_w); |
2034 | ev_io_stop (EV_A_ &pipe_w); |
1879 | |
2035 | |
1880 | #if EV_USE_EVENTFD |
2036 | #if EV_USE_EVENTFD |
… | |
… | |
1898 | postfork = 0; |
2054 | postfork = 0; |
1899 | } |
2055 | } |
1900 | |
2056 | |
1901 | #if EV_MULTIPLICITY |
2057 | #if EV_MULTIPLICITY |
1902 | |
2058 | |
1903 | struct ev_loop * |
2059 | struct ev_loop * ecb_cold |
1904 | ev_loop_new (unsigned int flags) |
2060 | ev_loop_new (unsigned int flags) |
1905 | { |
2061 | { |
1906 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
2062 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1907 | |
2063 | |
1908 | memset (EV_A, 0, sizeof (struct ev_loop)); |
2064 | memset (EV_A, 0, sizeof (struct ev_loop)); |
… | |
… | |
1916 | } |
2072 | } |
1917 | |
2073 | |
1918 | #endif /* multiplicity */ |
2074 | #endif /* multiplicity */ |
1919 | |
2075 | |
1920 | #if EV_VERIFY |
2076 | #if EV_VERIFY |
1921 | static void noinline |
2077 | static void noinline ecb_cold |
1922 | verify_watcher (EV_P_ W w) |
2078 | verify_watcher (EV_P_ W w) |
1923 | { |
2079 | { |
1924 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
2080 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1925 | |
2081 | |
1926 | if (w->pending) |
2082 | if (w->pending) |
1927 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
2083 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1928 | } |
2084 | } |
1929 | |
2085 | |
1930 | static void noinline |
2086 | static void noinline ecb_cold |
1931 | verify_heap (EV_P_ ANHE *heap, int N) |
2087 | verify_heap (EV_P_ ANHE *heap, int N) |
1932 | { |
2088 | { |
1933 | int i; |
2089 | int i; |
1934 | |
2090 | |
1935 | for (i = HEAP0; i < N + HEAP0; ++i) |
2091 | for (i = HEAP0; i < N + HEAP0; ++i) |
… | |
… | |
1940 | |
2096 | |
1941 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
2097 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1942 | } |
2098 | } |
1943 | } |
2099 | } |
1944 | |
2100 | |
1945 | static void noinline |
2101 | static void noinline ecb_cold |
1946 | array_verify (EV_P_ W *ws, int cnt) |
2102 | array_verify (EV_P_ W *ws, int cnt) |
1947 | { |
2103 | { |
1948 | while (cnt--) |
2104 | while (cnt--) |
1949 | { |
2105 | { |
1950 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
2106 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
… | |
… | |
1952 | } |
2108 | } |
1953 | } |
2109 | } |
1954 | #endif |
2110 | #endif |
1955 | |
2111 | |
1956 | #if EV_FEATURE_API |
2112 | #if EV_FEATURE_API |
1957 | void |
2113 | void ecb_cold |
1958 | ev_verify (EV_P) |
2114 | ev_verify (EV_P) |
1959 | { |
2115 | { |
1960 | #if EV_VERIFY |
2116 | #if EV_VERIFY |
1961 | int i; |
2117 | int i; |
1962 | WL w; |
2118 | WL w; |
… | |
… | |
2028 | #endif |
2184 | #endif |
2029 | } |
2185 | } |
2030 | #endif |
2186 | #endif |
2031 | |
2187 | |
2032 | #if EV_MULTIPLICITY |
2188 | #if EV_MULTIPLICITY |
2033 | struct ev_loop * |
2189 | struct ev_loop * ecb_cold |
2034 | #else |
2190 | #else |
2035 | int |
2191 | int |
2036 | #endif |
2192 | #endif |
2037 | ev_default_loop (unsigned int flags) |
2193 | ev_default_loop (unsigned int flags) |
2038 | { |
2194 | { |
… | |
… | |
2096 | for (pri = NUMPRI; pri--; ) |
2252 | for (pri = NUMPRI; pri--; ) |
2097 | while (pendingcnt [pri]) |
2253 | while (pendingcnt [pri]) |
2098 | { |
2254 | { |
2099 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2255 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2100 | |
2256 | |
2101 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
|
|
2102 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
2103 | |
|
|
2104 | p->w->pending = 0; |
2257 | p->w->pending = 0; |
2105 | EV_CB_INVOKE (p->w, p->events); |
2258 | EV_CB_INVOKE (p->w, p->events); |
2106 | EV_FREQUENT_CHECK; |
2259 | EV_FREQUENT_CHECK; |
2107 | } |
2260 | } |
2108 | } |
2261 | } |
… | |
… | |
2169 | feed_reverse_done (EV_A_ EV_TIMER); |
2322 | feed_reverse_done (EV_A_ EV_TIMER); |
2170 | } |
2323 | } |
2171 | } |
2324 | } |
2172 | |
2325 | |
2173 | #if EV_PERIODIC_ENABLE |
2326 | #if EV_PERIODIC_ENABLE |
|
|
2327 | |
|
|
2328 | static void noinline |
|
|
2329 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
2330 | { |
|
|
2331 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
2332 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
2333 | |
|
|
2334 | /* the above almost always errs on the low side */ |
|
|
2335 | while (at <= ev_rt_now) |
|
|
2336 | { |
|
|
2337 | ev_tstamp nat = at + w->interval; |
|
|
2338 | |
|
|
2339 | /* when resolution fails us, we use ev_rt_now */ |
|
|
2340 | if (expect_false (nat == at)) |
|
|
2341 | { |
|
|
2342 | at = ev_rt_now; |
|
|
2343 | break; |
|
|
2344 | } |
|
|
2345 | |
|
|
2346 | at = nat; |
|
|
2347 | } |
|
|
2348 | |
|
|
2349 | ev_at (w) = at; |
|
|
2350 | } |
|
|
2351 | |
2174 | /* make periodics pending */ |
2352 | /* make periodics pending */ |
2175 | inline_size void |
2353 | inline_size void |
2176 | periodics_reify (EV_P) |
2354 | periodics_reify (EV_P) |
2177 | { |
2355 | { |
2178 | EV_FREQUENT_CHECK; |
2356 | EV_FREQUENT_CHECK; |
… | |
… | |
2197 | ANHE_at_cache (periodics [HEAP0]); |
2375 | ANHE_at_cache (periodics [HEAP0]); |
2198 | downheap (periodics, periodiccnt, HEAP0); |
2376 | downheap (periodics, periodiccnt, HEAP0); |
2199 | } |
2377 | } |
2200 | else if (w->interval) |
2378 | else if (w->interval) |
2201 | { |
2379 | { |
2202 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2380 | periodic_recalc (EV_A_ w); |
2203 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2204 | /* this might happen because of floating point inexactness */ |
|
|
2205 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2206 | { |
|
|
2207 | ev_at (w) += w->interval; |
|
|
2208 | |
|
|
2209 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2210 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2211 | /* has effectively asked to get triggered more often than possible */ |
|
|
2212 | if (ev_at (w) < ev_rt_now) |
|
|
2213 | ev_at (w) = ev_rt_now; |
|
|
2214 | } |
|
|
2215 | |
|
|
2216 | ANHE_at_cache (periodics [HEAP0]); |
2381 | ANHE_at_cache (periodics [HEAP0]); |
2217 | downheap (periodics, periodiccnt, HEAP0); |
2382 | downheap (periodics, periodiccnt, HEAP0); |
2218 | } |
2383 | } |
2219 | else |
2384 | else |
2220 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
2385 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
… | |
… | |
2228 | } |
2393 | } |
2229 | } |
2394 | } |
2230 | |
2395 | |
2231 | /* simply recalculate all periodics */ |
2396 | /* simply recalculate all periodics */ |
2232 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2397 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2233 | static void noinline |
2398 | static void noinline ecb_cold |
2234 | periodics_reschedule (EV_P) |
2399 | periodics_reschedule (EV_P) |
2235 | { |
2400 | { |
2236 | int i; |
2401 | int i; |
2237 | |
2402 | |
2238 | /* adjust periodics after time jump */ |
2403 | /* adjust periodics after time jump */ |
… | |
… | |
2241 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2406 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2242 | |
2407 | |
2243 | if (w->reschedule_cb) |
2408 | if (w->reschedule_cb) |
2244 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2409 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2245 | else if (w->interval) |
2410 | else if (w->interval) |
2246 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2411 | periodic_recalc (EV_A_ w); |
2247 | |
2412 | |
2248 | ANHE_at_cache (periodics [i]); |
2413 | ANHE_at_cache (periodics [i]); |
2249 | } |
2414 | } |
2250 | |
2415 | |
2251 | reheap (periodics, periodiccnt); |
2416 | reheap (periodics, periodiccnt); |
2252 | } |
2417 | } |
2253 | #endif |
2418 | #endif |
2254 | |
2419 | |
2255 | /* adjust all timers by a given offset */ |
2420 | /* adjust all timers by a given offset */ |
2256 | static void noinline |
2421 | static void noinline ecb_cold |
2257 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2422 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2258 | { |
2423 | { |
2259 | int i; |
2424 | int i; |
2260 | |
2425 | |
2261 | for (i = 0; i < timercnt; ++i) |
2426 | for (i = 0; i < timercnt; ++i) |
… | |
… | |
2298 | * doesn't hurt either as we only do this on time-jumps or |
2463 | * doesn't hurt either as we only do this on time-jumps or |
2299 | * in the unlikely event of having been preempted here. |
2464 | * in the unlikely event of having been preempted here. |
2300 | */ |
2465 | */ |
2301 | for (i = 4; --i; ) |
2466 | for (i = 4; --i; ) |
2302 | { |
2467 | { |
|
|
2468 | ev_tstamp diff; |
2303 | rtmn_diff = ev_rt_now - mn_now; |
2469 | rtmn_diff = ev_rt_now - mn_now; |
2304 | |
2470 | |
|
|
2471 | diff = odiff - rtmn_diff; |
|
|
2472 | |
2305 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
2473 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
2306 | return; /* all is well */ |
2474 | return; /* all is well */ |
2307 | |
2475 | |
2308 | ev_rt_now = ev_time (); |
2476 | ev_rt_now = ev_time (); |
2309 | mn_now = get_clock (); |
2477 | mn_now = get_clock (); |
2310 | now_floor = mn_now; |
2478 | now_floor = mn_now; |
… | |
… | |
2400 | ev_tstamp prev_mn_now = mn_now; |
2568 | ev_tstamp prev_mn_now = mn_now; |
2401 | |
2569 | |
2402 | /* update time to cancel out callback processing overhead */ |
2570 | /* update time to cancel out callback processing overhead */ |
2403 | time_update (EV_A_ 1e100); |
2571 | time_update (EV_A_ 1e100); |
2404 | |
2572 | |
|
|
2573 | /* from now on, we want a pipe-wake-up */ |
|
|
2574 | pipe_write_wanted = 1; |
|
|
2575 | |
2405 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) |
2576 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
2406 | { |
2577 | { |
2407 | waittime = MAX_BLOCKTIME; |
2578 | waittime = MAX_BLOCKTIME; |
2408 | |
2579 | |
2409 | if (timercnt) |
2580 | if (timercnt) |
2410 | { |
2581 | { |
2411 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
2582 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
2412 | if (waittime > to) waittime = to; |
2583 | if (waittime > to) waittime = to; |
2413 | } |
2584 | } |
2414 | |
2585 | |
2415 | #if EV_PERIODIC_ENABLE |
2586 | #if EV_PERIODIC_ENABLE |
2416 | if (periodiccnt) |
2587 | if (periodiccnt) |
2417 | { |
2588 | { |
2418 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
2589 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
2419 | if (waittime > to) waittime = to; |
2590 | if (waittime > to) waittime = to; |
2420 | } |
2591 | } |
2421 | #endif |
2592 | #endif |
2422 | |
2593 | |
2423 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2594 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2424 | if (expect_false (waittime < timeout_blocktime)) |
2595 | if (expect_false (waittime < timeout_blocktime)) |
2425 | waittime = timeout_blocktime; |
2596 | waittime = timeout_blocktime; |
|
|
2597 | |
|
|
2598 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
2599 | /* to pass a minimum nonzero value to the backend */ |
|
|
2600 | if (expect_false (waittime < backend_mintime)) |
|
|
2601 | waittime = backend_mintime; |
2426 | |
2602 | |
2427 | /* extra check because io_blocktime is commonly 0 */ |
2603 | /* extra check because io_blocktime is commonly 0 */ |
2428 | if (expect_false (io_blocktime)) |
2604 | if (expect_false (io_blocktime)) |
2429 | { |
2605 | { |
2430 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2606 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2431 | |
2607 | |
2432 | if (sleeptime > waittime - backend_fudge) |
2608 | if (sleeptime > waittime - backend_mintime) |
2433 | sleeptime = waittime - backend_fudge; |
2609 | sleeptime = waittime - backend_mintime; |
2434 | |
2610 | |
2435 | if (expect_true (sleeptime > 0.)) |
2611 | if (expect_true (sleeptime > 0.)) |
2436 | { |
2612 | { |
2437 | ev_sleep (sleeptime); |
2613 | ev_sleep (sleeptime); |
2438 | waittime -= sleeptime; |
2614 | waittime -= sleeptime; |
… | |
… | |
2444 | ++loop_count; |
2620 | ++loop_count; |
2445 | #endif |
2621 | #endif |
2446 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2622 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2447 | backend_poll (EV_A_ waittime); |
2623 | backend_poll (EV_A_ waittime); |
2448 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
2624 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
2625 | |
|
|
2626 | pipe_write_wanted = 0; |
|
|
2627 | |
|
|
2628 | if (pipe_write_skipped) |
|
|
2629 | { |
|
|
2630 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
2631 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
2632 | } |
|
|
2633 | |
2449 | |
2634 | |
2450 | /* update ev_rt_now, do magic */ |
2635 | /* update ev_rt_now, do magic */ |
2451 | time_update (EV_A_ waittime + sleeptime); |
2636 | time_update (EV_A_ waittime + sleeptime); |
2452 | } |
2637 | } |
2453 | |
2638 | |
… | |
… | |
2743 | if (w->reschedule_cb) |
2928 | if (w->reschedule_cb) |
2744 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2929 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2745 | else if (w->interval) |
2930 | else if (w->interval) |
2746 | { |
2931 | { |
2747 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2932 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2748 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2933 | periodic_recalc (EV_A_ w); |
2749 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2750 | } |
2934 | } |
2751 | else |
2935 | else |
2752 | ev_at (w) = w->offset; |
2936 | ev_at (w) = w->offset; |
2753 | |
2937 | |
2754 | EV_FREQUENT_CHECK; |
2938 | EV_FREQUENT_CHECK; |
… | |
… | |
2875 | sa.sa_handler = ev_sighandler; |
3059 | sa.sa_handler = ev_sighandler; |
2876 | sigfillset (&sa.sa_mask); |
3060 | sigfillset (&sa.sa_mask); |
2877 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
3061 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2878 | sigaction (w->signum, &sa, 0); |
3062 | sigaction (w->signum, &sa, 0); |
2879 | |
3063 | |
|
|
3064 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
3065 | { |
2880 | sigemptyset (&sa.sa_mask); |
3066 | sigemptyset (&sa.sa_mask); |
2881 | sigaddset (&sa.sa_mask, w->signum); |
3067 | sigaddset (&sa.sa_mask, w->signum); |
2882 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
3068 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
3069 | } |
2883 | #endif |
3070 | #endif |
2884 | } |
3071 | } |
2885 | |
3072 | |
2886 | EV_FREQUENT_CHECK; |
3073 | EV_FREQUENT_CHECK; |
2887 | } |
3074 | } |
… | |
… | |
3028 | if (!pend || pend == path) |
3215 | if (!pend || pend == path) |
3029 | break; |
3216 | break; |
3030 | |
3217 | |
3031 | *pend = 0; |
3218 | *pend = 0; |
3032 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3219 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3033 | } |
3220 | } |
3034 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3221 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3035 | } |
3222 | } |
3036 | } |
3223 | } |
3037 | |
3224 | |
3038 | if (w->wd >= 0) |
3225 | if (w->wd >= 0) |
… | |
… | |
3105 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3292 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3106 | ofs += sizeof (struct inotify_event) + ev->len; |
3293 | ofs += sizeof (struct inotify_event) + ev->len; |
3107 | } |
3294 | } |
3108 | } |
3295 | } |
3109 | |
3296 | |
3110 | inline_size void |
3297 | inline_size void ecb_cold |
3111 | ev_check_2625 (EV_P) |
3298 | ev_check_2625 (EV_P) |
3112 | { |
3299 | { |
3113 | /* kernels < 2.6.25 are borked |
3300 | /* kernels < 2.6.25 are borked |
3114 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3301 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3115 | */ |
3302 | */ |
… | |
… | |
3740 | } |
3927 | } |
3741 | |
3928 | |
3742 | /*****************************************************************************/ |
3929 | /*****************************************************************************/ |
3743 | |
3930 | |
3744 | #if EV_WALK_ENABLE |
3931 | #if EV_WALK_ENABLE |
3745 | void |
3932 | void ecb_cold |
3746 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
3933 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
3747 | { |
3934 | { |
3748 | int i, j; |
3935 | int i, j; |
3749 | ev_watcher_list *wl, *wn; |
3936 | ev_watcher_list *wl, *wn; |
3750 | |
3937 | |