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 | |
… | |
… | |
177 | #ifdef EV_H |
182 | #ifdef EV_H |
178 | # include EV_H |
183 | # include EV_H |
179 | #else |
184 | #else |
180 | # include "ev.h" |
185 | # include "ev.h" |
181 | #endif |
186 | #endif |
182 | |
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|
183 | EV_CPP(extern "C" {) |
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|
184 | |
187 | |
185 | #ifndef _WIN32 |
188 | #ifndef _WIN32 |
186 | # include <sys/time.h> |
189 | # include <sys/time.h> |
187 | # include <sys/wait.h> |
190 | # include <sys/wait.h> |
188 | # include <unistd.h> |
191 | # include <unistd.h> |
… | |
… | |
232 | /* to make it compile regardless, just remove the above line, */ |
235 | /* to make it compile regardless, just remove the above line, */ |
233 | /* but consider reporting it, too! :) */ |
236 | /* but consider reporting it, too! :) */ |
234 | # define EV_NSIG 65 |
237 | # define EV_NSIG 65 |
235 | #endif |
238 | #endif |
236 | |
239 | |
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240 | #ifndef EV_USE_FLOOR |
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241 | # define EV_USE_FLOOR 0 |
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242 | #endif |
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243 | |
237 | #ifndef EV_USE_CLOCK_SYSCALL |
244 | #ifndef EV_USE_CLOCK_SYSCALL |
238 | # if __linux && __GLIBC__ >= 2 |
245 | # if __linux && __GLIBC__ >= 2 |
239 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
246 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
240 | # else |
247 | # else |
241 | # define EV_USE_CLOCK_SYSCALL 0 |
248 | # define EV_USE_CLOCK_SYSCALL 0 |
… | |
… | |
376 | # undef EV_USE_INOTIFY |
383 | # undef EV_USE_INOTIFY |
377 | # define EV_USE_INOTIFY 0 |
384 | # define EV_USE_INOTIFY 0 |
378 | #endif |
385 | #endif |
379 | |
386 | |
380 | #if !EV_USE_NANOSLEEP |
387 | #if !EV_USE_NANOSLEEP |
381 | # ifndef _WIN32 |
388 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
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|
389 | # if !defined(_WIN32) && !defined(__hpux) |
382 | # include <sys/select.h> |
390 | # include <sys/select.h> |
383 | # endif |
391 | # endif |
384 | #endif |
392 | #endif |
385 | |
393 | |
386 | #if EV_USE_INOTIFY |
394 | #if EV_USE_INOTIFY |
… | |
… | |
442 | #else |
450 | #else |
443 | # define EV_FREQUENT_CHECK do { } while (0) |
451 | # define EV_FREQUENT_CHECK do { } while (0) |
444 | #endif |
452 | #endif |
445 | |
453 | |
446 | /* |
454 | /* |
447 | * This is used to avoid floating point rounding problems. |
455 | * 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. |
456 | * This value is good at least till the year 4000. |
452 | * Better solutions welcome. |
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453 | */ |
457 | */ |
454 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
458 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
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|
459 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
455 | |
460 | |
456 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
461 | #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) */ |
462 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
458 | |
463 | |
459 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
464 | #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) |
465 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
461 | |
466 | |
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467 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
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468 | /* ECB.H BEGIN */ |
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469 | /* |
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470 | * libecb - http://software.schmorp.de/pkg/libecb |
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471 | * |
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472 | * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> |
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473 | * Copyright (©) 2011 Emanuele Giaquinta |
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474 | * All rights reserved. |
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475 | * |
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476 | * Redistribution and use in source and binary forms, with or without modifica- |
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477 | * tion, are permitted provided that the following conditions are met: |
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478 | * |
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479 | * 1. Redistributions of source code must retain the above copyright notice, |
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480 | * this list of conditions and the following disclaimer. |
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481 | * |
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482 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
483 | * notice, this list of conditions and the following disclaimer in the |
|
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484 | * documentation and/or other materials provided with the distribution. |
|
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485 | * |
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486 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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487 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
488 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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|
489 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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490 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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491 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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492 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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493 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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494 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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495 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
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496 | */ |
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497 | |
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498 | #ifndef ECB_H |
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499 | #define ECB_H |
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500 | |
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501 | #ifdef _WIN32 |
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502 | typedef signed char int8_t; |
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503 | typedef unsigned char uint8_t; |
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504 | typedef signed short int16_t; |
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505 | typedef unsigned short uint16_t; |
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506 | typedef signed int int32_t; |
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507 | typedef unsigned int uint32_t; |
462 | #if __GNUC__ >= 4 |
508 | #if __GNUC__ |
463 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
509 | typedef signed long long int64_t; |
464 | # define noinline __attribute__ ((noinline)) |
510 | typedef unsigned long long uint64_t; |
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511 | #else /* _MSC_VER || __BORLANDC__ */ |
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512 | typedef signed __int64 int64_t; |
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513 | typedef unsigned __int64 uint64_t; |
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514 | #endif |
465 | #else |
515 | #else |
466 | # define expect(expr,value) (expr) |
516 | #include <inttypes.h> |
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 |
517 | #endif |
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518 | |
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519 | /* many compilers define _GNUC_ to some versions but then only implement |
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520 | * what their idiot authors think are the "more important" extensions, |
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521 | * causing enormous grief in return for some better fake benchmark numbers. |
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522 | * or so. |
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523 | * we try to detect these and simply assume they are not gcc - if they have |
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524 | * an issue with that they should have done it right in the first place. |
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525 | */ |
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526 | #ifndef ECB_GCC_VERSION |
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527 | #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) |
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528 | #define ECB_GCC_VERSION(major,minor) 0 |
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529 | #else |
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530 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
471 | #endif |
531 | #endif |
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532 | #endif |
472 | |
533 | |
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534 | /*****************************************************************************/ |
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535 | |
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536 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
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537 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
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538 | |
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539 | #if ECB_NO_THREADS || ECB_NO_SMP |
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540 | #define ECB_MEMORY_FENCE do { } while (0) |
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541 | #endif |
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542 | |
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543 | #ifndef ECB_MEMORY_FENCE |
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544 | #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) |
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545 | #if __i386__ |
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546 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
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547 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ |
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548 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ |
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549 | #elif __amd64 |
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550 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
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551 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
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552 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ |
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553 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
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554 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
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555 | #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ |
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556 | || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) |
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557 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
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558 | #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ |
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559 | || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) |
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560 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
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561 | #endif |
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562 | #endif |
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563 | #endif |
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564 | |
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565 | #ifndef ECB_MEMORY_FENCE |
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566 | #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) |
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567 | #define ECB_MEMORY_FENCE __sync_synchronize () |
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568 | /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ |
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569 | /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ |
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570 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
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571 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
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572 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
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573 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
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574 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
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575 | #elif defined(_WIN32) |
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576 | #include <WinNT.h> |
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577 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
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578 | #endif |
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579 | #endif |
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580 | |
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581 | #ifndef ECB_MEMORY_FENCE |
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582 | #if !ECB_AVOID_PTHREADS |
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583 | /* |
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584 | * if you get undefined symbol references to pthread_mutex_lock, |
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585 | * or failure to find pthread.h, then you should implement |
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586 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
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587 | * OR provide pthread.h and link against the posix thread library |
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588 | * of your system. |
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589 | */ |
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590 | #include <pthread.h> |
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591 | #define ECB_NEEDS_PTHREADS 1 |
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592 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
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593 | |
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594 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
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595 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
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596 | #endif |
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597 | #endif |
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598 | |
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599 | #if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) |
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600 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
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601 | #endif |
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602 | |
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603 | #if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) |
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604 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
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605 | #endif |
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606 | |
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607 | /*****************************************************************************/ |
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608 | |
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609 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
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610 | |
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611 | #if __cplusplus |
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612 | #define ecb_inline static inline |
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613 | #elif ECB_GCC_VERSION(2,5) |
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614 | #define ecb_inline static __inline__ |
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615 | #elif ECB_C99 |
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616 | #define ecb_inline static inline |
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617 | #else |
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618 | #define ecb_inline static |
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619 | #endif |
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620 | |
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621 | #if ECB_GCC_VERSION(3,3) |
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622 | #define ecb_restrict __restrict__ |
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623 | #elif ECB_C99 |
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624 | #define ecb_restrict restrict |
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625 | #else |
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626 | #define ecb_restrict |
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627 | #endif |
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628 | |
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629 | typedef int ecb_bool; |
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630 | |
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631 | #define ECB_CONCAT_(a, b) a ## b |
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632 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
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633 | #define ECB_STRINGIFY_(a) # a |
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634 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
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635 | |
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636 | #define ecb_function_ ecb_inline |
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637 | |
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638 | #if ECB_GCC_VERSION(3,1) |
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639 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
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640 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
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641 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
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642 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
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643 | #else |
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644 | #define ecb_attribute(attrlist) |
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645 | #define ecb_is_constant(expr) 0 |
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646 | #define ecb_expect(expr,value) (expr) |
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647 | #define ecb_prefetch(addr,rw,locality) |
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648 | #endif |
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649 | |
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650 | /* no emulation for ecb_decltype */ |
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651 | #if ECB_GCC_VERSION(4,5) |
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652 | #define ecb_decltype(x) __decltype(x) |
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653 | #elif ECB_GCC_VERSION(3,0) |
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654 | #define ecb_decltype(x) __typeof(x) |
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655 | #endif |
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656 | |
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657 | #define ecb_noinline ecb_attribute ((__noinline__)) |
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658 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
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659 | #define ecb_unused ecb_attribute ((__unused__)) |
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660 | #define ecb_const ecb_attribute ((__const__)) |
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661 | #define ecb_pure ecb_attribute ((__pure__)) |
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662 | |
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663 | #if ECB_GCC_VERSION(4,3) |
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664 | #define ecb_artificial ecb_attribute ((__artificial__)) |
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665 | #define ecb_hot ecb_attribute ((__hot__)) |
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666 | #define ecb_cold ecb_attribute ((__cold__)) |
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667 | #else |
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668 | #define ecb_artificial |
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669 | #define ecb_hot |
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670 | #define ecb_cold |
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671 | #endif |
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672 | |
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673 | /* put around conditional expressions if you are very sure that the */ |
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674 | /* expression is mostly true or mostly false. note that these return */ |
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675 | /* booleans, not the expression. */ |
473 | #define expect_false(expr) expect ((expr) != 0, 0) |
676 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
474 | #define expect_true(expr) expect ((expr) != 0, 1) |
677 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
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678 | /* for compatibility to the rest of the world */ |
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679 | #define ecb_likely(expr) ecb_expect_true (expr) |
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680 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
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681 | |
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682 | /* count trailing zero bits and count # of one bits */ |
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683 | #if ECB_GCC_VERSION(3,4) |
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684 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
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685 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
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686 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
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687 | #define ecb_ctz32(x) __builtin_ctz (x) |
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688 | #define ecb_ctz64(x) __builtin_ctzll (x) |
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689 | #define ecb_popcount32(x) __builtin_popcount (x) |
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690 | /* no popcountll */ |
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691 | #else |
|
|
692 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
|
|
693 | ecb_function_ int |
|
|
694 | ecb_ctz32 (uint32_t x) |
|
|
695 | { |
|
|
696 | int r = 0; |
|
|
697 | |
|
|
698 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
699 | |
|
|
700 | #if ECB_branchless_on_i386 |
|
|
701 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
702 | r += !!(x & 0xcccccccc) << 1; |
|
|
703 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
704 | r += !!(x & 0xff00ff00) << 3; |
|
|
705 | r += !!(x & 0xffff0000) << 4; |
|
|
706 | #else |
|
|
707 | if (x & 0xaaaaaaaa) r += 1; |
|
|
708 | if (x & 0xcccccccc) r += 2; |
|
|
709 | if (x & 0xf0f0f0f0) r += 4; |
|
|
710 | if (x & 0xff00ff00) r += 8; |
|
|
711 | if (x & 0xffff0000) r += 16; |
|
|
712 | #endif |
|
|
713 | |
|
|
714 | return r; |
|
|
715 | } |
|
|
716 | |
|
|
717 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
|
|
718 | ecb_function_ int |
|
|
719 | ecb_ctz64 (uint64_t x) |
|
|
720 | { |
|
|
721 | int shift = x & 0xffffffffU ? 0 : 32; |
|
|
722 | return ecb_ctz32 (x >> shift) + shift; |
|
|
723 | } |
|
|
724 | |
|
|
725 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
|
|
726 | ecb_function_ int |
|
|
727 | ecb_popcount32 (uint32_t x) |
|
|
728 | { |
|
|
729 | x -= (x >> 1) & 0x55555555; |
|
|
730 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
731 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
732 | x *= 0x01010101; |
|
|
733 | |
|
|
734 | return x >> 24; |
|
|
735 | } |
|
|
736 | |
|
|
737 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
|
|
738 | ecb_function_ int ecb_ld32 (uint32_t x) |
|
|
739 | { |
|
|
740 | int r = 0; |
|
|
741 | |
|
|
742 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
743 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
744 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
745 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
746 | if (x >> 1) { r += 1; } |
|
|
747 | |
|
|
748 | return r; |
|
|
749 | } |
|
|
750 | |
|
|
751 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
|
|
752 | ecb_function_ int ecb_ld64 (uint64_t x) |
|
|
753 | { |
|
|
754 | int r = 0; |
|
|
755 | |
|
|
756 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
757 | |
|
|
758 | return r + ecb_ld32 (x); |
|
|
759 | } |
|
|
760 | #endif |
|
|
761 | |
|
|
762 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
763 | /* so for this version we are lazy */ |
|
|
764 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
|
|
765 | ecb_function_ int |
|
|
766 | ecb_popcount64 (uint64_t x) |
|
|
767 | { |
|
|
768 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
769 | } |
|
|
770 | |
|
|
771 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
|
|
772 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
|
|
773 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
|
|
774 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
|
|
775 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
|
|
776 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
|
|
777 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
|
|
778 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
|
|
779 | |
|
|
780 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
781 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
782 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
783 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
784 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
785 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
786 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
787 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
788 | |
|
|
789 | #if ECB_GCC_VERSION(4,3) |
|
|
790 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
791 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
792 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
793 | #else |
|
|
794 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
|
|
795 | ecb_function_ uint16_t |
|
|
796 | ecb_bswap16 (uint16_t x) |
|
|
797 | { |
|
|
798 | return ecb_rotl16 (x, 8); |
|
|
799 | } |
|
|
800 | |
|
|
801 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
|
|
802 | ecb_function_ uint32_t |
|
|
803 | ecb_bswap32 (uint32_t x) |
|
|
804 | { |
|
|
805 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
806 | } |
|
|
807 | |
|
|
808 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
|
|
809 | ecb_function_ uint64_t |
|
|
810 | ecb_bswap64 (uint64_t x) |
|
|
811 | { |
|
|
812 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
813 | } |
|
|
814 | #endif |
|
|
815 | |
|
|
816 | #if ECB_GCC_VERSION(4,5) |
|
|
817 | #define ecb_unreachable() __builtin_unreachable () |
|
|
818 | #else |
|
|
819 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
820 | ecb_function_ void ecb_unreachable (void) ecb_noreturn; |
|
|
821 | ecb_function_ void ecb_unreachable (void) { } |
|
|
822 | #endif |
|
|
823 | |
|
|
824 | /* try to tell the compiler that some condition is definitely true */ |
|
|
825 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
|
|
826 | |
|
|
827 | ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; |
|
|
828 | ecb_function_ unsigned char |
|
|
829 | ecb_byteorder_helper (void) |
|
|
830 | { |
|
|
831 | const uint32_t u = 0x11223344; |
|
|
832 | return *(unsigned char *)&u; |
|
|
833 | } |
|
|
834 | |
|
|
835 | ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; |
|
|
836 | ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
|
|
837 | ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; |
|
|
838 | ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
|
|
839 | |
|
|
840 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
841 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
842 | #else |
|
|
843 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
844 | #endif |
|
|
845 | |
|
|
846 | #if __cplusplus |
|
|
847 | template<typename T> |
|
|
848 | static inline T ecb_div_rd (T val, T div) |
|
|
849 | { |
|
|
850 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
851 | } |
|
|
852 | template<typename T> |
|
|
853 | static inline T ecb_div_ru (T val, T div) |
|
|
854 | { |
|
|
855 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
856 | } |
|
|
857 | #else |
|
|
858 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
859 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
|
|
860 | #endif |
|
|
861 | |
|
|
862 | #if ecb_cplusplus_does_not_suck |
|
|
863 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
864 | template<typename T, int N> |
|
|
865 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
866 | { |
|
|
867 | return N; |
|
|
868 | } |
|
|
869 | #else |
|
|
870 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
871 | #endif |
|
|
872 | |
|
|
873 | #endif |
|
|
874 | |
|
|
875 | /* ECB.H END */ |
|
|
876 | |
|
|
877 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
878 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
879 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
880 | * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
|
|
881 | * libev, in which casess the memory fences become nops. |
|
|
882 | * alternatively, you can remove this #error and link against libpthread, |
|
|
883 | * which will then provide the memory fences. |
|
|
884 | */ |
|
|
885 | # error "memory fences not defined for your architecture, please report" |
|
|
886 | #endif |
|
|
887 | |
|
|
888 | #ifndef ECB_MEMORY_FENCE |
|
|
889 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
890 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
891 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
892 | #endif |
|
|
893 | |
|
|
894 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
895 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
896 | #define noinline ecb_noinline |
|
|
897 | |
475 | #define inline_size static inline |
898 | #define inline_size ecb_inline |
476 | |
899 | |
477 | #if EV_FEATURE_CODE |
900 | #if EV_FEATURE_CODE |
478 | # define inline_speed static inline |
901 | # define inline_speed ecb_inline |
479 | #else |
902 | #else |
480 | # define inline_speed static noinline |
903 | # define inline_speed static noinline |
481 | #endif |
904 | #endif |
482 | |
905 | |
483 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
906 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
… | |
… | |
522 | # include "ev_win32.c" |
945 | # include "ev_win32.c" |
523 | #endif |
946 | #endif |
524 | |
947 | |
525 | /*****************************************************************************/ |
948 | /*****************************************************************************/ |
526 | |
949 | |
|
|
950 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
951 | |
|
|
952 | #if EV_USE_FLOOR |
|
|
953 | # include <math.h> |
|
|
954 | # define ev_floor(v) floor (v) |
|
|
955 | #else |
|
|
956 | |
|
|
957 | #include <float.h> |
|
|
958 | |
|
|
959 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
960 | static ev_tstamp noinline |
|
|
961 | ev_floor (ev_tstamp v) |
|
|
962 | { |
|
|
963 | /* the choice of shift factor is not terribly important */ |
|
|
964 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
965 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
966 | #else |
|
|
967 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
968 | #endif |
|
|
969 | |
|
|
970 | /* argument too large for an unsigned long? */ |
|
|
971 | if (expect_false (v >= shift)) |
|
|
972 | { |
|
|
973 | ev_tstamp f; |
|
|
974 | |
|
|
975 | if (v == v - 1.) |
|
|
976 | return v; /* very large number */ |
|
|
977 | |
|
|
978 | f = shift * ev_floor (v * (1. / shift)); |
|
|
979 | return f + ev_floor (v - f); |
|
|
980 | } |
|
|
981 | |
|
|
982 | /* special treatment for negative args? */ |
|
|
983 | if (expect_false (v < 0.)) |
|
|
984 | { |
|
|
985 | ev_tstamp f = -ev_floor (-v); |
|
|
986 | |
|
|
987 | return f - (f == v ? 0 : 1); |
|
|
988 | } |
|
|
989 | |
|
|
990 | /* fits into an unsigned long */ |
|
|
991 | return (unsigned long)v; |
|
|
992 | } |
|
|
993 | |
|
|
994 | #endif |
|
|
995 | |
|
|
996 | /*****************************************************************************/ |
|
|
997 | |
527 | #ifdef __linux |
998 | #ifdef __linux |
528 | # include <sys/utsname.h> |
999 | # include <sys/utsname.h> |
529 | #endif |
1000 | #endif |
530 | |
1001 | |
531 | static unsigned int noinline |
1002 | static unsigned int noinline ecb_cold |
532 | ev_linux_version (void) |
1003 | ev_linux_version (void) |
533 | { |
1004 | { |
534 | #ifdef __linux |
1005 | #ifdef __linux |
535 | unsigned int v = 0; |
1006 | unsigned int v = 0; |
536 | struct utsname buf; |
1007 | struct utsname buf; |
… | |
… | |
565 | } |
1036 | } |
566 | |
1037 | |
567 | /*****************************************************************************/ |
1038 | /*****************************************************************************/ |
568 | |
1039 | |
569 | #if EV_AVOID_STDIO |
1040 | #if EV_AVOID_STDIO |
570 | static void noinline |
1041 | static void noinline ecb_cold |
571 | ev_printerr (const char *msg) |
1042 | ev_printerr (const char *msg) |
572 | { |
1043 | { |
573 | write (STDERR_FILENO, msg, strlen (msg)); |
1044 | write (STDERR_FILENO, msg, strlen (msg)); |
574 | } |
1045 | } |
575 | #endif |
1046 | #endif |
576 | |
1047 | |
577 | static void (*syserr_cb)(const char *msg); |
1048 | static void (*syserr_cb)(const char *msg); |
578 | |
1049 | |
579 | void |
1050 | void ecb_cold |
580 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
1051 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
581 | { |
1052 | { |
582 | syserr_cb = cb; |
1053 | syserr_cb = cb; |
583 | } |
1054 | } |
584 | |
1055 | |
585 | static void noinline |
1056 | static void noinline ecb_cold |
586 | ev_syserr (const char *msg) |
1057 | ev_syserr (const char *msg) |
587 | { |
1058 | { |
588 | if (!msg) |
1059 | if (!msg) |
589 | msg = "(libev) system error"; |
1060 | msg = "(libev) system error"; |
590 | |
1061 | |
… | |
… | |
623 | #endif |
1094 | #endif |
624 | } |
1095 | } |
625 | |
1096 | |
626 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
1097 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
627 | |
1098 | |
628 | void |
1099 | void ecb_cold |
629 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
1100 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
630 | { |
1101 | { |
631 | alloc = cb; |
1102 | alloc = cb; |
632 | } |
1103 | } |
633 | |
1104 | |
… | |
… | |
830 | |
1301 | |
831 | do |
1302 | do |
832 | ncur <<= 1; |
1303 | ncur <<= 1; |
833 | while (cnt > ncur); |
1304 | while (cnt > ncur); |
834 | |
1305 | |
835 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
1306 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
836 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
1307 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
837 | { |
1308 | { |
838 | ncur *= elem; |
1309 | ncur *= elem; |
839 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
1310 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
840 | ncur = ncur - sizeof (void *) * 4; |
1311 | ncur = ncur - sizeof (void *) * 4; |
… | |
… | |
842 | } |
1313 | } |
843 | |
1314 | |
844 | return ncur; |
1315 | return ncur; |
845 | } |
1316 | } |
846 | |
1317 | |
847 | static noinline void * |
1318 | static void * noinline ecb_cold |
848 | array_realloc (int elem, void *base, int *cur, int cnt) |
1319 | array_realloc (int elem, void *base, int *cur, int cnt) |
849 | { |
1320 | { |
850 | *cur = array_nextsize (elem, *cur, cnt); |
1321 | *cur = array_nextsize (elem, *cur, cnt); |
851 | return ev_realloc (base, elem * *cur); |
1322 | return ev_realloc (base, elem * *cur); |
852 | } |
1323 | } |
… | |
… | |
855 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
1326 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
856 | |
1327 | |
857 | #define array_needsize(type,base,cur,cnt,init) \ |
1328 | #define array_needsize(type,base,cur,cnt,init) \ |
858 | if (expect_false ((cnt) > (cur))) \ |
1329 | if (expect_false ((cnt) > (cur))) \ |
859 | { \ |
1330 | { \ |
860 | int ocur_ = (cur); \ |
1331 | int ecb_unused ocur_ = (cur); \ |
861 | (base) = (type *)array_realloc \ |
1332 | (base) = (type *)array_realloc \ |
862 | (sizeof (type), (base), &(cur), (cnt)); \ |
1333 | (sizeof (type), (base), &(cur), (cnt)); \ |
863 | init ((base) + (ocur_), (cur) - ocur_); \ |
1334 | init ((base) + (ocur_), (cur) - ocur_); \ |
864 | } |
1335 | } |
865 | |
1336 | |
… | |
… | |
965 | inline_size void |
1436 | inline_size void |
966 | fd_reify (EV_P) |
1437 | fd_reify (EV_P) |
967 | { |
1438 | { |
968 | int i; |
1439 | int i; |
969 | |
1440 | |
|
|
1441 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1442 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1443 | { |
|
|
1444 | int fd = fdchanges [i]; |
|
|
1445 | ANFD *anfd = anfds + fd; |
|
|
1446 | |
|
|
1447 | if (anfd->reify & EV__IOFDSET && anfd->head) |
|
|
1448 | { |
|
|
1449 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1450 | |
|
|
1451 | if (handle != anfd->handle) |
|
|
1452 | { |
|
|
1453 | unsigned long arg; |
|
|
1454 | |
|
|
1455 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1456 | |
|
|
1457 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
1458 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
1459 | anfd->events = 0; |
|
|
1460 | anfd->handle = handle; |
|
|
1461 | } |
|
|
1462 | } |
|
|
1463 | } |
|
|
1464 | #endif |
|
|
1465 | |
970 | for (i = 0; i < fdchangecnt; ++i) |
1466 | for (i = 0; i < fdchangecnt; ++i) |
971 | { |
1467 | { |
972 | int fd = fdchanges [i]; |
1468 | int fd = fdchanges [i]; |
973 | ANFD *anfd = anfds + fd; |
1469 | ANFD *anfd = anfds + fd; |
974 | ev_io *w; |
1470 | ev_io *w; |
… | |
… | |
976 | unsigned char o_events = anfd->events; |
1472 | unsigned char o_events = anfd->events; |
977 | unsigned char o_reify = anfd->reify; |
1473 | unsigned char o_reify = anfd->reify; |
978 | |
1474 | |
979 | anfd->reify = 0; |
1475 | anfd->reify = 0; |
980 | |
1476 | |
981 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
982 | if (o_reify & EV__IOFDSET) |
|
|
983 | { |
|
|
984 | unsigned long arg; |
|
|
985 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
986 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
|
|
987 | printf ("oi %d %x\n", fd, anfd->handle);//D |
|
|
988 | } |
|
|
989 | #endif |
|
|
990 | |
|
|
991 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
1477 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
992 | { |
1478 | { |
993 | anfd->events = 0; |
1479 | anfd->events = 0; |
994 | |
1480 | |
995 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
1481 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
… | |
… | |
1020 | fdchanges [fdchangecnt - 1] = fd; |
1506 | fdchanges [fdchangecnt - 1] = fd; |
1021 | } |
1507 | } |
1022 | } |
1508 | } |
1023 | |
1509 | |
1024 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1510 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1025 | inline_speed void |
1511 | inline_speed void ecb_cold |
1026 | fd_kill (EV_P_ int fd) |
1512 | fd_kill (EV_P_ int fd) |
1027 | { |
1513 | { |
1028 | ev_io *w; |
1514 | ev_io *w; |
1029 | |
1515 | |
1030 | while ((w = (ev_io *)anfds [fd].head)) |
1516 | while ((w = (ev_io *)anfds [fd].head)) |
… | |
… | |
1033 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1519 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1034 | } |
1520 | } |
1035 | } |
1521 | } |
1036 | |
1522 | |
1037 | /* check whether the given fd is actually valid, for error recovery */ |
1523 | /* check whether the given fd is actually valid, for error recovery */ |
1038 | inline_size int |
1524 | inline_size int ecb_cold |
1039 | fd_valid (int fd) |
1525 | fd_valid (int fd) |
1040 | { |
1526 | { |
1041 | #ifdef _WIN32 |
1527 | #ifdef _WIN32 |
1042 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1528 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1043 | #else |
1529 | #else |
1044 | return fcntl (fd, F_GETFD) != -1; |
1530 | return fcntl (fd, F_GETFD) != -1; |
1045 | #endif |
1531 | #endif |
1046 | } |
1532 | } |
1047 | |
1533 | |
1048 | /* called on EBADF to verify fds */ |
1534 | /* called on EBADF to verify fds */ |
1049 | static void noinline |
1535 | static void noinline ecb_cold |
1050 | fd_ebadf (EV_P) |
1536 | fd_ebadf (EV_P) |
1051 | { |
1537 | { |
1052 | int fd; |
1538 | int fd; |
1053 | |
1539 | |
1054 | for (fd = 0; fd < anfdmax; ++fd) |
1540 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
1056 | if (!fd_valid (fd) && errno == EBADF) |
1542 | if (!fd_valid (fd) && errno == EBADF) |
1057 | fd_kill (EV_A_ fd); |
1543 | fd_kill (EV_A_ fd); |
1058 | } |
1544 | } |
1059 | |
1545 | |
1060 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1546 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1061 | static void noinline |
1547 | static void noinline ecb_cold |
1062 | fd_enomem (EV_P) |
1548 | fd_enomem (EV_P) |
1063 | { |
1549 | { |
1064 | int fd; |
1550 | int fd; |
1065 | |
1551 | |
1066 | for (fd = anfdmax; fd--; ) |
1552 | for (fd = anfdmax; fd--; ) |
… | |
… | |
1261 | |
1747 | |
1262 | /*****************************************************************************/ |
1748 | /*****************************************************************************/ |
1263 | |
1749 | |
1264 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1750 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1265 | |
1751 | |
1266 | static void noinline |
1752 | static void noinline ecb_cold |
1267 | evpipe_init (EV_P) |
1753 | evpipe_init (EV_P) |
1268 | { |
1754 | { |
1269 | if (!ev_is_active (&pipe_w)) |
1755 | if (!ev_is_active (&pipe_w)) |
1270 | { |
1756 | { |
1271 | # if EV_USE_EVENTFD |
1757 | # if EV_USE_EVENTFD |
… | |
… | |
1293 | ev_io_start (EV_A_ &pipe_w); |
1779 | ev_io_start (EV_A_ &pipe_w); |
1294 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1780 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1295 | } |
1781 | } |
1296 | } |
1782 | } |
1297 | |
1783 | |
1298 | inline_size void |
1784 | inline_speed void |
1299 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1785 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1300 | { |
1786 | { |
1301 | if (!*flag) |
1787 | if (expect_true (*flag)) |
|
|
1788 | return; |
|
|
1789 | |
|
|
1790 | *flag = 1; |
|
|
1791 | |
|
|
1792 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
1793 | |
|
|
1794 | pipe_write_skipped = 1; |
|
|
1795 | |
|
|
1796 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
1797 | |
|
|
1798 | if (pipe_write_wanted) |
1302 | { |
1799 | { |
|
|
1800 | int old_errno; |
|
|
1801 | |
|
|
1802 | pipe_write_skipped = 0; /* just an optimisation, no fence needed */ |
|
|
1803 | |
1303 | int old_errno = errno; /* save errno because write might clobber it */ |
1804 | old_errno = errno; /* save errno because write will clobber it */ |
1304 | char dummy; |
|
|
1305 | |
|
|
1306 | *flag = 1; |
|
|
1307 | |
1805 | |
1308 | #if EV_USE_EVENTFD |
1806 | #if EV_USE_EVENTFD |
1309 | if (evfd >= 0) |
1807 | if (evfd >= 0) |
1310 | { |
1808 | { |
1311 | uint64_t counter = 1; |
1809 | uint64_t counter = 1; |
1312 | write (evfd, &counter, sizeof (uint64_t)); |
1810 | write (evfd, &counter, sizeof (uint64_t)); |
1313 | } |
1811 | } |
1314 | else |
1812 | else |
1315 | #endif |
1813 | #endif |
|
|
1814 | { |
1316 | /* win32 people keep sending patches that change this write() to send() */ |
1815 | /* win32 people keep sending patches that change this write() to send() */ |
1317 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
1816 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
1318 | /* so when you think this write should be a send instead, please find out */ |
1817 | /* so when you think this write should be a send instead, please find out */ |
1319 | /* where your send() is from - it's definitely not the microsoft send, and */ |
1818 | /* where your send() is from - it's definitely not the microsoft send, and */ |
1320 | /* tell me. thank you. */ |
1819 | /* tell me. thank you. */ |
1321 | write (evpipe [1], &dummy, 1); |
1820 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
1821 | } |
1322 | |
1822 | |
1323 | errno = old_errno; |
1823 | errno = old_errno; |
1324 | } |
1824 | } |
1325 | } |
1825 | } |
1326 | |
1826 | |
… | |
… | |
1329 | static void |
1829 | static void |
1330 | pipecb (EV_P_ ev_io *iow, int revents) |
1830 | pipecb (EV_P_ ev_io *iow, int revents) |
1331 | { |
1831 | { |
1332 | int i; |
1832 | int i; |
1333 | |
1833 | |
|
|
1834 | if (revents & EV_READ) |
|
|
1835 | { |
1334 | #if EV_USE_EVENTFD |
1836 | #if EV_USE_EVENTFD |
1335 | if (evfd >= 0) |
1837 | if (evfd >= 0) |
1336 | { |
1838 | { |
1337 | uint64_t counter; |
1839 | uint64_t counter; |
1338 | read (evfd, &counter, sizeof (uint64_t)); |
1840 | read (evfd, &counter, sizeof (uint64_t)); |
1339 | } |
1841 | } |
1340 | else |
1842 | else |
1341 | #endif |
1843 | #endif |
1342 | { |
1844 | { |
1343 | char dummy; |
1845 | char dummy; |
1344 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1846 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1345 | read (evpipe [0], &dummy, 1); |
1847 | read (evpipe [0], &dummy, 1); |
|
|
1848 | } |
1346 | } |
1849 | } |
1347 | |
1850 | |
|
|
1851 | pipe_write_skipped = 0; |
|
|
1852 | |
|
|
1853 | #if EV_SIGNAL_ENABLE |
1348 | if (sig_pending) |
1854 | if (sig_pending) |
1349 | { |
1855 | { |
1350 | sig_pending = 0; |
1856 | sig_pending = 0; |
1351 | |
1857 | |
1352 | for (i = EV_NSIG - 1; i--; ) |
1858 | for (i = EV_NSIG - 1; i--; ) |
1353 | if (expect_false (signals [i].pending)) |
1859 | if (expect_false (signals [i].pending)) |
1354 | ev_feed_signal_event (EV_A_ i + 1); |
1860 | ev_feed_signal_event (EV_A_ i + 1); |
1355 | } |
1861 | } |
|
|
1862 | #endif |
1356 | |
1863 | |
1357 | #if EV_ASYNC_ENABLE |
1864 | #if EV_ASYNC_ENABLE |
1358 | if (async_pending) |
1865 | if (async_pending) |
1359 | { |
1866 | { |
1360 | async_pending = 0; |
1867 | async_pending = 0; |
… | |
… | |
1369 | #endif |
1876 | #endif |
1370 | } |
1877 | } |
1371 | |
1878 | |
1372 | /*****************************************************************************/ |
1879 | /*****************************************************************************/ |
1373 | |
1880 | |
|
|
1881 | void |
|
|
1882 | ev_feed_signal (int signum) |
|
|
1883 | { |
|
|
1884 | #if EV_MULTIPLICITY |
|
|
1885 | EV_P = signals [signum - 1].loop; |
|
|
1886 | |
|
|
1887 | if (!EV_A) |
|
|
1888 | return; |
|
|
1889 | #endif |
|
|
1890 | |
|
|
1891 | if (!ev_active (&pipe_w)) |
|
|
1892 | return; |
|
|
1893 | |
|
|
1894 | signals [signum - 1].pending = 1; |
|
|
1895 | evpipe_write (EV_A_ &sig_pending); |
|
|
1896 | } |
|
|
1897 | |
1374 | static void |
1898 | static void |
1375 | ev_sighandler (int signum) |
1899 | ev_sighandler (int signum) |
1376 | { |
1900 | { |
1377 | #if EV_MULTIPLICITY |
|
|
1378 | EV_P = signals [signum - 1].loop; |
|
|
1379 | #endif |
|
|
1380 | |
|
|
1381 | #ifdef _WIN32 |
1901 | #ifdef _WIN32 |
1382 | signal (signum, ev_sighandler); |
1902 | signal (signum, ev_sighandler); |
1383 | #endif |
1903 | #endif |
1384 | |
1904 | |
1385 | signals [signum - 1].pending = 1; |
1905 | ev_feed_signal (signum); |
1386 | evpipe_write (EV_A_ &sig_pending); |
|
|
1387 | } |
1906 | } |
1388 | |
1907 | |
1389 | void noinline |
1908 | void noinline |
1390 | ev_feed_signal_event (EV_P_ int signum) |
1909 | ev_feed_signal_event (EV_P_ int signum) |
1391 | { |
1910 | { |
… | |
… | |
1510 | #endif |
2029 | #endif |
1511 | #if EV_USE_SELECT |
2030 | #if EV_USE_SELECT |
1512 | # include "ev_select.c" |
2031 | # include "ev_select.c" |
1513 | #endif |
2032 | #endif |
1514 | |
2033 | |
1515 | int |
2034 | int ecb_cold |
1516 | ev_version_major (void) |
2035 | ev_version_major (void) |
1517 | { |
2036 | { |
1518 | return EV_VERSION_MAJOR; |
2037 | return EV_VERSION_MAJOR; |
1519 | } |
2038 | } |
1520 | |
2039 | |
1521 | int |
2040 | int ecb_cold |
1522 | ev_version_minor (void) |
2041 | ev_version_minor (void) |
1523 | { |
2042 | { |
1524 | return EV_VERSION_MINOR; |
2043 | return EV_VERSION_MINOR; |
1525 | } |
2044 | } |
1526 | |
2045 | |
1527 | /* return true if we are running with elevated privileges and should ignore env variables */ |
2046 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1528 | int inline_size |
2047 | int inline_size ecb_cold |
1529 | enable_secure (void) |
2048 | enable_secure (void) |
1530 | { |
2049 | { |
1531 | #ifdef _WIN32 |
2050 | #ifdef _WIN32 |
1532 | return 0; |
2051 | return 0; |
1533 | #else |
2052 | #else |
1534 | return getuid () != geteuid () |
2053 | return getuid () != geteuid () |
1535 | || getgid () != getegid (); |
2054 | || getgid () != getegid (); |
1536 | #endif |
2055 | #endif |
1537 | } |
2056 | } |
1538 | |
2057 | |
1539 | unsigned int |
2058 | unsigned int ecb_cold |
1540 | ev_supported_backends (void) |
2059 | ev_supported_backends (void) |
1541 | { |
2060 | { |
1542 | unsigned int flags = 0; |
2061 | unsigned int flags = 0; |
1543 | |
2062 | |
1544 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
2063 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
… | |
… | |
1548 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
2067 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
1549 | |
2068 | |
1550 | return flags; |
2069 | return flags; |
1551 | } |
2070 | } |
1552 | |
2071 | |
1553 | unsigned int |
2072 | unsigned int ecb_cold |
1554 | ev_recommended_backends (void) |
2073 | ev_recommended_backends (void) |
1555 | { |
2074 | { |
1556 | unsigned int flags = ev_supported_backends (); |
2075 | unsigned int flags = ev_supported_backends (); |
1557 | |
2076 | |
1558 | #ifndef __NetBSD__ |
2077 | #ifndef __NetBSD__ |
… | |
… | |
1570 | #endif |
2089 | #endif |
1571 | |
2090 | |
1572 | return flags; |
2091 | return flags; |
1573 | } |
2092 | } |
1574 | |
2093 | |
1575 | unsigned int |
2094 | unsigned int ecb_cold |
1576 | ev_embeddable_backends (void) |
2095 | ev_embeddable_backends (void) |
1577 | { |
2096 | { |
1578 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
2097 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1579 | |
2098 | |
1580 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
2099 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
… | |
… | |
1625 | ev_userdata (EV_P) |
2144 | ev_userdata (EV_P) |
1626 | { |
2145 | { |
1627 | return userdata; |
2146 | return userdata; |
1628 | } |
2147 | } |
1629 | |
2148 | |
|
|
2149 | void |
1630 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
2150 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
1631 | { |
2151 | { |
1632 | invoke_cb = invoke_pending_cb; |
2152 | invoke_cb = invoke_pending_cb; |
1633 | } |
2153 | } |
1634 | |
2154 | |
|
|
2155 | void |
1635 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
2156 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
1636 | { |
2157 | { |
1637 | release_cb = release; |
2158 | release_cb = release; |
1638 | acquire_cb = acquire; |
2159 | acquire_cb = acquire; |
1639 | } |
2160 | } |
1640 | #endif |
2161 | #endif |
1641 | |
2162 | |
1642 | /* initialise a loop structure, must be zero-initialised */ |
2163 | /* initialise a loop structure, must be zero-initialised */ |
1643 | static void noinline |
2164 | static void noinline ecb_cold |
1644 | loop_init (EV_P_ unsigned int flags) |
2165 | loop_init (EV_P_ unsigned int flags) |
1645 | { |
2166 | { |
1646 | if (!backend) |
2167 | if (!backend) |
1647 | { |
2168 | { |
|
|
2169 | origflags = flags; |
|
|
2170 | |
1648 | #if EV_USE_REALTIME |
2171 | #if EV_USE_REALTIME |
1649 | if (!have_realtime) |
2172 | if (!have_realtime) |
1650 | { |
2173 | { |
1651 | struct timespec ts; |
2174 | struct timespec ts; |
1652 | |
2175 | |
… | |
… | |
1674 | if (!(flags & EVFLAG_NOENV) |
2197 | if (!(flags & EVFLAG_NOENV) |
1675 | && !enable_secure () |
2198 | && !enable_secure () |
1676 | && getenv ("LIBEV_FLAGS")) |
2199 | && getenv ("LIBEV_FLAGS")) |
1677 | flags = atoi (getenv ("LIBEV_FLAGS")); |
2200 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1678 | |
2201 | |
1679 | ev_rt_now = ev_time (); |
2202 | ev_rt_now = ev_time (); |
1680 | mn_now = get_clock (); |
2203 | mn_now = get_clock (); |
1681 | now_floor = mn_now; |
2204 | now_floor = mn_now; |
1682 | rtmn_diff = ev_rt_now - mn_now; |
2205 | rtmn_diff = ev_rt_now - mn_now; |
1683 | #if EV_FEATURE_API |
2206 | #if EV_FEATURE_API |
1684 | invoke_cb = ev_invoke_pending; |
2207 | invoke_cb = ev_invoke_pending; |
1685 | #endif |
2208 | #endif |
1686 | |
2209 | |
1687 | io_blocktime = 0.; |
2210 | io_blocktime = 0.; |
1688 | timeout_blocktime = 0.; |
2211 | timeout_blocktime = 0.; |
1689 | backend = 0; |
2212 | backend = 0; |
1690 | backend_fd = -1; |
2213 | backend_fd = -1; |
1691 | sig_pending = 0; |
2214 | sig_pending = 0; |
1692 | #if EV_ASYNC_ENABLE |
2215 | #if EV_ASYNC_ENABLE |
1693 | async_pending = 0; |
2216 | async_pending = 0; |
1694 | #endif |
2217 | #endif |
|
|
2218 | pipe_write_skipped = 0; |
|
|
2219 | pipe_write_wanted = 0; |
1695 | #if EV_USE_INOTIFY |
2220 | #if EV_USE_INOTIFY |
1696 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2221 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1697 | #endif |
2222 | #endif |
1698 | #if EV_USE_SIGNALFD |
2223 | #if EV_USE_SIGNALFD |
1699 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
2224 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1700 | #endif |
2225 | #endif |
1701 | |
2226 | |
1702 | if (!(flags & 0x0000ffffU)) |
2227 | if (!(flags & EVBACKEND_MASK)) |
1703 | flags |= ev_recommended_backends (); |
2228 | flags |= ev_recommended_backends (); |
1704 | |
2229 | |
1705 | #if EV_USE_IOCP |
2230 | #if EV_USE_IOCP |
1706 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
2231 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
1707 | #endif |
2232 | #endif |
… | |
… | |
1729 | #endif |
2254 | #endif |
1730 | } |
2255 | } |
1731 | } |
2256 | } |
1732 | |
2257 | |
1733 | /* free up a loop structure */ |
2258 | /* free up a loop structure */ |
1734 | void |
2259 | void ecb_cold |
1735 | ev_loop_destroy (EV_P) |
2260 | ev_loop_destroy (EV_P) |
1736 | { |
2261 | { |
1737 | int i; |
2262 | int i; |
1738 | |
2263 | |
1739 | #if EV_MULTIPLICITY |
2264 | #if EV_MULTIPLICITY |
… | |
… | |
1869 | infy_fork (EV_A); |
2394 | infy_fork (EV_A); |
1870 | #endif |
2395 | #endif |
1871 | |
2396 | |
1872 | if (ev_is_active (&pipe_w)) |
2397 | if (ev_is_active (&pipe_w)) |
1873 | { |
2398 | { |
1874 | /* this "locks" the handlers against writing to the pipe */ |
2399 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
1875 | /* while we modify the fd vars */ |
|
|
1876 | sig_pending = 1; |
|
|
1877 | #if EV_ASYNC_ENABLE |
|
|
1878 | async_pending = 1; |
|
|
1879 | #endif |
|
|
1880 | |
2400 | |
1881 | ev_ref (EV_A); |
2401 | ev_ref (EV_A); |
1882 | ev_io_stop (EV_A_ &pipe_w); |
2402 | ev_io_stop (EV_A_ &pipe_w); |
1883 | |
2403 | |
1884 | #if EV_USE_EVENTFD |
2404 | #if EV_USE_EVENTFD |
… | |
… | |
1902 | postfork = 0; |
2422 | postfork = 0; |
1903 | } |
2423 | } |
1904 | |
2424 | |
1905 | #if EV_MULTIPLICITY |
2425 | #if EV_MULTIPLICITY |
1906 | |
2426 | |
1907 | struct ev_loop * |
2427 | struct ev_loop * ecb_cold |
1908 | ev_loop_new (unsigned int flags) |
2428 | ev_loop_new (unsigned int flags) |
1909 | { |
2429 | { |
1910 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
2430 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1911 | |
2431 | |
1912 | memset (EV_A, 0, sizeof (struct ev_loop)); |
2432 | memset (EV_A, 0, sizeof (struct ev_loop)); |
… | |
… | |
1920 | } |
2440 | } |
1921 | |
2441 | |
1922 | #endif /* multiplicity */ |
2442 | #endif /* multiplicity */ |
1923 | |
2443 | |
1924 | #if EV_VERIFY |
2444 | #if EV_VERIFY |
1925 | static void noinline |
2445 | static void noinline ecb_cold |
1926 | verify_watcher (EV_P_ W w) |
2446 | verify_watcher (EV_P_ W w) |
1927 | { |
2447 | { |
1928 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
2448 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1929 | |
2449 | |
1930 | if (w->pending) |
2450 | if (w->pending) |
1931 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
2451 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1932 | } |
2452 | } |
1933 | |
2453 | |
1934 | static void noinline |
2454 | static void noinline ecb_cold |
1935 | verify_heap (EV_P_ ANHE *heap, int N) |
2455 | verify_heap (EV_P_ ANHE *heap, int N) |
1936 | { |
2456 | { |
1937 | int i; |
2457 | int i; |
1938 | |
2458 | |
1939 | for (i = HEAP0; i < N + HEAP0; ++i) |
2459 | for (i = HEAP0; i < N + HEAP0; ++i) |
… | |
… | |
1944 | |
2464 | |
1945 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
2465 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1946 | } |
2466 | } |
1947 | } |
2467 | } |
1948 | |
2468 | |
1949 | static void noinline |
2469 | static void noinline ecb_cold |
1950 | array_verify (EV_P_ W *ws, int cnt) |
2470 | array_verify (EV_P_ W *ws, int cnt) |
1951 | { |
2471 | { |
1952 | while (cnt--) |
2472 | while (cnt--) |
1953 | { |
2473 | { |
1954 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
2474 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
… | |
… | |
1956 | } |
2476 | } |
1957 | } |
2477 | } |
1958 | #endif |
2478 | #endif |
1959 | |
2479 | |
1960 | #if EV_FEATURE_API |
2480 | #if EV_FEATURE_API |
1961 | void |
2481 | void ecb_cold |
1962 | ev_verify (EV_P) |
2482 | ev_verify (EV_P) |
1963 | { |
2483 | { |
1964 | #if EV_VERIFY |
2484 | #if EV_VERIFY |
1965 | int i; |
2485 | int i; |
1966 | WL w; |
2486 | WL w; |
… | |
… | |
2032 | #endif |
2552 | #endif |
2033 | } |
2553 | } |
2034 | #endif |
2554 | #endif |
2035 | |
2555 | |
2036 | #if EV_MULTIPLICITY |
2556 | #if EV_MULTIPLICITY |
2037 | struct ev_loop * |
2557 | struct ev_loop * ecb_cold |
2038 | #else |
2558 | #else |
2039 | int |
2559 | int |
2040 | #endif |
2560 | #endif |
2041 | ev_default_loop (unsigned int flags) |
2561 | ev_default_loop (unsigned int flags) |
2042 | { |
2562 | { |
… | |
… | |
2100 | for (pri = NUMPRI; pri--; ) |
2620 | for (pri = NUMPRI; pri--; ) |
2101 | while (pendingcnt [pri]) |
2621 | while (pendingcnt [pri]) |
2102 | { |
2622 | { |
2103 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2623 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2104 | |
2624 | |
2105 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
|
|
2106 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
2107 | |
|
|
2108 | p->w->pending = 0; |
2625 | p->w->pending = 0; |
2109 | EV_CB_INVOKE (p->w, p->events); |
2626 | EV_CB_INVOKE (p->w, p->events); |
2110 | EV_FREQUENT_CHECK; |
2627 | EV_FREQUENT_CHECK; |
2111 | } |
2628 | } |
2112 | } |
2629 | } |
… | |
… | |
2173 | feed_reverse_done (EV_A_ EV_TIMER); |
2690 | feed_reverse_done (EV_A_ EV_TIMER); |
2174 | } |
2691 | } |
2175 | } |
2692 | } |
2176 | |
2693 | |
2177 | #if EV_PERIODIC_ENABLE |
2694 | #if EV_PERIODIC_ENABLE |
|
|
2695 | |
|
|
2696 | static void noinline |
|
|
2697 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
2698 | { |
|
|
2699 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
2700 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
2701 | |
|
|
2702 | /* the above almost always errs on the low side */ |
|
|
2703 | while (at <= ev_rt_now) |
|
|
2704 | { |
|
|
2705 | ev_tstamp nat = at + w->interval; |
|
|
2706 | |
|
|
2707 | /* when resolution fails us, we use ev_rt_now */ |
|
|
2708 | if (expect_false (nat == at)) |
|
|
2709 | { |
|
|
2710 | at = ev_rt_now; |
|
|
2711 | break; |
|
|
2712 | } |
|
|
2713 | |
|
|
2714 | at = nat; |
|
|
2715 | } |
|
|
2716 | |
|
|
2717 | ev_at (w) = at; |
|
|
2718 | } |
|
|
2719 | |
2178 | /* make periodics pending */ |
2720 | /* make periodics pending */ |
2179 | inline_size void |
2721 | inline_size void |
2180 | periodics_reify (EV_P) |
2722 | periodics_reify (EV_P) |
2181 | { |
2723 | { |
2182 | EV_FREQUENT_CHECK; |
2724 | EV_FREQUENT_CHECK; |
… | |
… | |
2201 | ANHE_at_cache (periodics [HEAP0]); |
2743 | ANHE_at_cache (periodics [HEAP0]); |
2202 | downheap (periodics, periodiccnt, HEAP0); |
2744 | downheap (periodics, periodiccnt, HEAP0); |
2203 | } |
2745 | } |
2204 | else if (w->interval) |
2746 | else if (w->interval) |
2205 | { |
2747 | { |
2206 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2748 | periodic_recalc (EV_A_ w); |
2207 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2208 | /* this might happen because of floating point inexactness */ |
|
|
2209 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2210 | { |
|
|
2211 | ev_at (w) += w->interval; |
|
|
2212 | |
|
|
2213 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2214 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2215 | /* has effectively asked to get triggered more often than possible */ |
|
|
2216 | if (ev_at (w) < ev_rt_now) |
|
|
2217 | ev_at (w) = ev_rt_now; |
|
|
2218 | } |
|
|
2219 | |
|
|
2220 | ANHE_at_cache (periodics [HEAP0]); |
2749 | ANHE_at_cache (periodics [HEAP0]); |
2221 | downheap (periodics, periodiccnt, HEAP0); |
2750 | downheap (periodics, periodiccnt, HEAP0); |
2222 | } |
2751 | } |
2223 | else |
2752 | else |
2224 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
2753 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
… | |
… | |
2232 | } |
2761 | } |
2233 | } |
2762 | } |
2234 | |
2763 | |
2235 | /* simply recalculate all periodics */ |
2764 | /* simply recalculate all periodics */ |
2236 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2765 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2237 | static void noinline |
2766 | static void noinline ecb_cold |
2238 | periodics_reschedule (EV_P) |
2767 | periodics_reschedule (EV_P) |
2239 | { |
2768 | { |
2240 | int i; |
2769 | int i; |
2241 | |
2770 | |
2242 | /* adjust periodics after time jump */ |
2771 | /* adjust periodics after time jump */ |
… | |
… | |
2245 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2774 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2246 | |
2775 | |
2247 | if (w->reschedule_cb) |
2776 | if (w->reschedule_cb) |
2248 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2777 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2249 | else if (w->interval) |
2778 | else if (w->interval) |
2250 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2779 | periodic_recalc (EV_A_ w); |
2251 | |
2780 | |
2252 | ANHE_at_cache (periodics [i]); |
2781 | ANHE_at_cache (periodics [i]); |
2253 | } |
2782 | } |
2254 | |
2783 | |
2255 | reheap (periodics, periodiccnt); |
2784 | reheap (periodics, periodiccnt); |
2256 | } |
2785 | } |
2257 | #endif |
2786 | #endif |
2258 | |
2787 | |
2259 | /* adjust all timers by a given offset */ |
2788 | /* adjust all timers by a given offset */ |
2260 | static void noinline |
2789 | static void noinline ecb_cold |
2261 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2790 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2262 | { |
2791 | { |
2263 | int i; |
2792 | int i; |
2264 | |
2793 | |
2265 | for (i = 0; i < timercnt; ++i) |
2794 | for (i = 0; i < timercnt; ++i) |
… | |
… | |
2302 | * doesn't hurt either as we only do this on time-jumps or |
2831 | * doesn't hurt either as we only do this on time-jumps or |
2303 | * in the unlikely event of having been preempted here. |
2832 | * in the unlikely event of having been preempted here. |
2304 | */ |
2833 | */ |
2305 | for (i = 4; --i; ) |
2834 | for (i = 4; --i; ) |
2306 | { |
2835 | { |
|
|
2836 | ev_tstamp diff; |
2307 | rtmn_diff = ev_rt_now - mn_now; |
2837 | rtmn_diff = ev_rt_now - mn_now; |
2308 | |
2838 | |
|
|
2839 | diff = odiff - rtmn_diff; |
|
|
2840 | |
2309 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
2841 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
2310 | return; /* all is well */ |
2842 | return; /* all is well */ |
2311 | |
2843 | |
2312 | ev_rt_now = ev_time (); |
2844 | ev_rt_now = ev_time (); |
2313 | mn_now = get_clock (); |
2845 | mn_now = get_clock (); |
2314 | now_floor = mn_now; |
2846 | now_floor = mn_now; |
… | |
… | |
2404 | ev_tstamp prev_mn_now = mn_now; |
2936 | ev_tstamp prev_mn_now = mn_now; |
2405 | |
2937 | |
2406 | /* update time to cancel out callback processing overhead */ |
2938 | /* update time to cancel out callback processing overhead */ |
2407 | time_update (EV_A_ 1e100); |
2939 | time_update (EV_A_ 1e100); |
2408 | |
2940 | |
|
|
2941 | /* from now on, we want a pipe-wake-up */ |
|
|
2942 | pipe_write_wanted = 1; |
|
|
2943 | |
|
|
2944 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
2945 | |
2409 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) |
2946 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
2410 | { |
2947 | { |
2411 | waittime = MAX_BLOCKTIME; |
2948 | waittime = MAX_BLOCKTIME; |
2412 | |
2949 | |
2413 | if (timercnt) |
2950 | if (timercnt) |
2414 | { |
2951 | { |
2415 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
2952 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
2416 | if (waittime > to) waittime = to; |
2953 | if (waittime > to) waittime = to; |
2417 | } |
2954 | } |
2418 | |
2955 | |
2419 | #if EV_PERIODIC_ENABLE |
2956 | #if EV_PERIODIC_ENABLE |
2420 | if (periodiccnt) |
2957 | if (periodiccnt) |
2421 | { |
2958 | { |
2422 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
2959 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
2423 | if (waittime > to) waittime = to; |
2960 | if (waittime > to) waittime = to; |
2424 | } |
2961 | } |
2425 | #endif |
2962 | #endif |
2426 | |
2963 | |
2427 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2964 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2428 | if (expect_false (waittime < timeout_blocktime)) |
2965 | if (expect_false (waittime < timeout_blocktime)) |
2429 | waittime = timeout_blocktime; |
2966 | waittime = timeout_blocktime; |
|
|
2967 | |
|
|
2968 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
2969 | /* to pass a minimum nonzero value to the backend */ |
|
|
2970 | if (expect_false (waittime < backend_mintime)) |
|
|
2971 | waittime = backend_mintime; |
2430 | |
2972 | |
2431 | /* extra check because io_blocktime is commonly 0 */ |
2973 | /* extra check because io_blocktime is commonly 0 */ |
2432 | if (expect_false (io_blocktime)) |
2974 | if (expect_false (io_blocktime)) |
2433 | { |
2975 | { |
2434 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2976 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2435 | |
2977 | |
2436 | if (sleeptime > waittime - backend_fudge) |
2978 | if (sleeptime > waittime - backend_mintime) |
2437 | sleeptime = waittime - backend_fudge; |
2979 | sleeptime = waittime - backend_mintime; |
2438 | |
2980 | |
2439 | if (expect_true (sleeptime > 0.)) |
2981 | if (expect_true (sleeptime > 0.)) |
2440 | { |
2982 | { |
2441 | ev_sleep (sleeptime); |
2983 | ev_sleep (sleeptime); |
2442 | waittime -= sleeptime; |
2984 | waittime -= sleeptime; |
… | |
… | |
2448 | ++loop_count; |
2990 | ++loop_count; |
2449 | #endif |
2991 | #endif |
2450 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2992 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2451 | backend_poll (EV_A_ waittime); |
2993 | backend_poll (EV_A_ waittime); |
2452 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
2994 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
2995 | |
|
|
2996 | pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ |
|
|
2997 | |
|
|
2998 | if (pipe_write_skipped) |
|
|
2999 | { |
|
|
3000 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
3001 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3002 | } |
|
|
3003 | |
2453 | |
3004 | |
2454 | /* update ev_rt_now, do magic */ |
3005 | /* update ev_rt_now, do magic */ |
2455 | time_update (EV_A_ waittime + sleeptime); |
3006 | time_update (EV_A_ waittime + sleeptime); |
2456 | } |
3007 | } |
2457 | |
3008 | |
… | |
… | |
2747 | if (w->reschedule_cb) |
3298 | if (w->reschedule_cb) |
2748 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
3299 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2749 | else if (w->interval) |
3300 | else if (w->interval) |
2750 | { |
3301 | { |
2751 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
3302 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2752 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
3303 | periodic_recalc (EV_A_ w); |
2753 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2754 | } |
3304 | } |
2755 | else |
3305 | else |
2756 | ev_at (w) = w->offset; |
3306 | ev_at (w) = w->offset; |
2757 | |
3307 | |
2758 | EV_FREQUENT_CHECK; |
3308 | EV_FREQUENT_CHECK; |
… | |
… | |
2879 | sa.sa_handler = ev_sighandler; |
3429 | sa.sa_handler = ev_sighandler; |
2880 | sigfillset (&sa.sa_mask); |
3430 | sigfillset (&sa.sa_mask); |
2881 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
3431 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2882 | sigaction (w->signum, &sa, 0); |
3432 | sigaction (w->signum, &sa, 0); |
2883 | |
3433 | |
|
|
3434 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
3435 | { |
2884 | sigemptyset (&sa.sa_mask); |
3436 | sigemptyset (&sa.sa_mask); |
2885 | sigaddset (&sa.sa_mask, w->signum); |
3437 | sigaddset (&sa.sa_mask, w->signum); |
2886 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
3438 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
3439 | } |
2887 | #endif |
3440 | #endif |
2888 | } |
3441 | } |
2889 | |
3442 | |
2890 | EV_FREQUENT_CHECK; |
3443 | EV_FREQUENT_CHECK; |
2891 | } |
3444 | } |
… | |
… | |
3032 | if (!pend || pend == path) |
3585 | if (!pend || pend == path) |
3033 | break; |
3586 | break; |
3034 | |
3587 | |
3035 | *pend = 0; |
3588 | *pend = 0; |
3036 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3589 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3037 | } |
3590 | } |
3038 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3591 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3039 | } |
3592 | } |
3040 | } |
3593 | } |
3041 | |
3594 | |
3042 | if (w->wd >= 0) |
3595 | if (w->wd >= 0) |
… | |
… | |
3109 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3662 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3110 | ofs += sizeof (struct inotify_event) + ev->len; |
3663 | ofs += sizeof (struct inotify_event) + ev->len; |
3111 | } |
3664 | } |
3112 | } |
3665 | } |
3113 | |
3666 | |
3114 | inline_size void |
3667 | inline_size void ecb_cold |
3115 | ev_check_2625 (EV_P) |
3668 | ev_check_2625 (EV_P) |
3116 | { |
3669 | { |
3117 | /* kernels < 2.6.25 are borked |
3670 | /* kernels < 2.6.25 are borked |
3118 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3671 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3119 | */ |
3672 | */ |
… | |
… | |
3744 | } |
4297 | } |
3745 | |
4298 | |
3746 | /*****************************************************************************/ |
4299 | /*****************************************************************************/ |
3747 | |
4300 | |
3748 | #if EV_WALK_ENABLE |
4301 | #if EV_WALK_ENABLE |
3749 | void |
4302 | void ecb_cold |
3750 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
4303 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
3751 | { |
4304 | { |
3752 | int i, j; |
4305 | int i, j; |
3753 | ev_watcher_list *wl, *wn; |
4306 | ev_watcher_list *wl, *wn; |
3754 | |
4307 | |
… | |
… | |
3798 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
4351 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
3799 | #endif |
4352 | #endif |
3800 | |
4353 | |
3801 | #if EV_IDLE_ENABLE |
4354 | #if EV_IDLE_ENABLE |
3802 | if (types & EV_IDLE) |
4355 | if (types & EV_IDLE) |
3803 | for (j = NUMPRI; i--; ) |
4356 | for (j = NUMPRI; j--; ) |
3804 | for (i = idlecnt [j]; i--; ) |
4357 | for (i = idlecnt [j]; i--; ) |
3805 | cb (EV_A_ EV_IDLE, idles [j][i]); |
4358 | cb (EV_A_ EV_IDLE, idles [j][i]); |
3806 | #endif |
4359 | #endif |
3807 | |
4360 | |
3808 | #if EV_FORK_ENABLE |
4361 | #if EV_FORK_ENABLE |
… | |
… | |
3861 | |
4414 | |
3862 | #if EV_MULTIPLICITY |
4415 | #if EV_MULTIPLICITY |
3863 | #include "ev_wrap.h" |
4416 | #include "ev_wrap.h" |
3864 | #endif |
4417 | #endif |
3865 | |
4418 | |
3866 | EV_CPP(}) |
|
|
3867 | |
|
|