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1 | #if __linux |
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2 | # define _GNU_SOURCE |
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3 | #endif |
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4 | |
1 | #define _REENTRANT 1 |
5 | #define _REENTRANT 1 |
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6 | |
2 | #include <errno.h> |
7 | #include <errno.h> |
3 | |
8 | |
4 | #include "EXTERN.h" |
9 | #include "EXTERN.h" |
5 | #include "perl.h" |
10 | #include "perl.h" |
6 | #include "XSUB.h" |
11 | #include "XSUB.h" |
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41 | # define NAME_MAX 4096 |
46 | # define NAME_MAX 4096 |
42 | #endif |
47 | #endif |
43 | |
48 | |
44 | #if __ia64 |
49 | #if __ia64 |
45 | # define STACKSIZE 65536 |
50 | # define STACKSIZE 65536 |
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51 | #elif __i386 || __x86_64 /* 16k is unreasonably high :( */ |
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52 | # define STACKSIZE PTHREAD_STACK_MIN |
46 | #else |
53 | #else |
47 | # define STACKSIZE 8192 |
54 | # define STACKSIZE 16384 |
48 | #endif |
55 | #endif |
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56 | |
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57 | /* buffer size for various temporary buffers */ |
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58 | #define AIO_BUFSIZE 65536 |
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59 | |
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60 | #define dBUF \ |
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61 | char *aio_buf = malloc (AIO_BUFSIZE); \ |
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62 | if (!aio_buf) \ |
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63 | return -1; |
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64 | |
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65 | #define fBUF free (aio_buf) |
49 | |
66 | |
50 | enum { |
67 | enum { |
51 | REQ_QUIT, |
68 | REQ_QUIT, |
52 | REQ_OPEN, REQ_CLOSE, |
69 | REQ_OPEN, REQ_CLOSE, |
53 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
70 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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109 | static int started, wanted; |
126 | static int started, wanted; |
110 | static volatile int nreqs; |
127 | static volatile int nreqs; |
111 | static int max_outstanding = 1<<30; |
128 | static int max_outstanding = 1<<30; |
112 | static int respipe [2]; |
129 | static int respipe [2]; |
113 | |
130 | |
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131 | #if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
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132 | # define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
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133 | #else |
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134 | # define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
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135 | #endif |
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136 | |
114 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
137 | static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
115 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
138 | static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
116 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
139 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
117 | |
140 | |
118 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
141 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
119 | static volatile aio_req ress, rese; /* queue start, queue end */ |
142 | static volatile aio_req ress, rese; /* queue start, queue end */ |
120 | |
143 | |
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196 | fd_set rfd; |
219 | fd_set rfd; |
197 | |
220 | |
198 | while (nreqs) |
221 | while (nreqs) |
199 | { |
222 | { |
200 | aio_req req; |
223 | aio_req req; |
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224 | #if !(__i386 || __x86_64) /* safe without sempahore on this archs */ |
201 | pthread_mutex_lock (&reslock); |
225 | pthread_mutex_lock (&reslock); |
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226 | #endif |
202 | req = ress; |
227 | req = ress; |
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228 | #if !(__i386 || __x86_64) /* safe without sempahore on this archs */ |
203 | pthread_mutex_unlock (&reslock); |
229 | pthread_mutex_unlock (&reslock); |
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230 | #endif |
204 | |
231 | |
205 | if (req) |
232 | if (req) |
206 | return; |
233 | return; |
207 | |
234 | |
208 | FD_ZERO(&rfd); |
235 | FD_ZERO(&rfd); |
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579 | #if !HAVE_READAHEAD |
606 | #if !HAVE_READAHEAD |
580 | # define readahead aio_readahead |
607 | # define readahead aio_readahead |
581 | |
608 | |
582 | static ssize_t readahead (int fd, off_t offset, size_t count) |
609 | static ssize_t readahead (int fd, off_t offset, size_t count) |
583 | { |
610 | { |
584 | char readahead_buf[4096]; |
611 | dBUF; |
585 | |
612 | |
586 | while (count > 0) |
613 | while (count > 0) |
587 | { |
614 | { |
588 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
615 | size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE; |
589 | |
616 | |
590 | pread (fd, readahead_buf, len, offset); |
617 | pread (fd, aio_buf, len, offset); |
591 | offset += len; |
618 | offset += len; |
592 | count -= len; |
619 | count -= len; |
593 | } |
620 | } |
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621 | |
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622 | fBUF; |
594 | |
623 | |
595 | errno = 0; |
624 | errno = 0; |
596 | } |
625 | } |
597 | #endif |
626 | #endif |
598 | |
627 | |
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684 | #endif |
713 | #endif |
685 | ) |
714 | ) |
686 | ) |
715 | ) |
687 | { |
716 | { |
688 | /* emulate sendfile. this is a major pain in the ass */ |
717 | /* emulate sendfile. this is a major pain in the ass */ |
689 | char buf[4096]; |
718 | dBUF; |
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719 | |
690 | res = 0; |
720 | res = 0; |
691 | |
721 | |
692 | while (count) |
722 | while (count) |
693 | { |
723 | { |
694 | ssize_t cnt; |
724 | ssize_t cnt; |
695 | |
725 | |
696 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
726 | cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset); |
697 | |
727 | |
698 | if (cnt <= 0) |
728 | if (cnt <= 0) |
699 | { |
729 | { |
700 | if (cnt && !res) res = -1; |
730 | if (cnt && !res) res = -1; |
701 | break; |
731 | break; |
702 | } |
732 | } |
703 | |
733 | |
704 | cnt = write (ofd, buf, cnt); |
734 | cnt = write (ofd, aio_buf, cnt); |
705 | |
735 | |
706 | if (cnt <= 0) |
736 | if (cnt <= 0) |
707 | { |
737 | { |
708 | if (cnt && !res) res = -1; |
738 | if (cnt && !res) res = -1; |
709 | break; |
739 | break; |
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711 | |
741 | |
712 | offset += cnt; |
742 | offset += cnt; |
713 | res += cnt; |
743 | res += cnt; |
714 | count -= cnt; |
744 | count -= cnt; |
715 | } |
745 | } |
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746 | |
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747 | fBUF; |
716 | } |
748 | } |
717 | |
749 | |
718 | return res; |
750 | return res; |
719 | } |
751 | } |
720 | |
752 | |
721 | /* read a full directory */ |
753 | /* read a full directory */ |
722 | static int scandir_ (const char *path, void **namesp) |
754 | static int scandir_ (const char *path, void **namesp) |
723 | { |
755 | { |
724 | DIR *dirp = opendir (path); |
756 | DIR *dirp; |
725 | union |
757 | union |
726 | { |
758 | { |
727 | struct dirent d; |
759 | struct dirent d; |
728 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
760 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
729 | } u; |
761 | } *u; |
730 | struct dirent *entp; |
762 | struct dirent *entp; |
731 | char *name, *names; |
763 | char *name, *names; |
732 | int memlen = 4096; |
764 | int memlen = 4096; |
733 | int memofs = 0; |
765 | int memofs = 0; |
734 | int res = 0; |
766 | int res = 0; |
735 | int errorno; |
767 | int errorno; |
736 | |
768 | |
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769 | dirp = opendir (path); |
737 | if (!dirp) |
770 | if (!dirp) |
738 | return -1; |
771 | return -1; |
739 | |
772 | |
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773 | u = malloc (sizeof (*u)); |
740 | names = malloc (memlen); |
774 | names = malloc (memlen); |
741 | |
775 | |
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776 | if (u && names) |
742 | for (;;) |
777 | for (;;) |
743 | { |
778 | { |
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779 | errno = 0; |
744 | errno = 0, readdir_r (dirp, &u.d, &entp); |
780 | readdir_r (dirp, &u->d, &entp); |
745 | |
781 | |
746 | if (!entp) |
782 | if (!entp) |
747 | break; |
783 | break; |
748 | |
784 | |
749 | name = entp->d_name; |
785 | name = entp->d_name; |
750 | |
786 | |
751 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
787 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
752 | { |
788 | { |
753 | int len = strlen (name) + 1; |
789 | int len = strlen (name) + 1; |
754 | |
790 | |
755 | res++; |
791 | res++; |
756 | |
792 | |
757 | while (memofs + len > memlen) |
793 | while (memofs + len > memlen) |
758 | { |
794 | { |
759 | memlen *= 2; |
795 | memlen *= 2; |
760 | names = realloc (names, memlen); |
796 | names = realloc (names, memlen); |
761 | if (!names) |
797 | if (!names) |
762 | break; |
798 | break; |
763 | } |
799 | } |
764 | |
800 | |
765 | memcpy (names + memofs, name, len); |
801 | memcpy (names + memofs, name, len); |
766 | memofs += len; |
802 | memofs += len; |
767 | } |
803 | } |
768 | } |
804 | } |
769 | |
805 | |
770 | errorno = errno; |
806 | errorno = errno; |
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807 | free (u); |
771 | closedir (dirp); |
808 | closedir (dirp); |
772 | |
809 | |
773 | if (errorno) |
810 | if (errorno) |
774 | { |
811 | { |
775 | free (names); |
812 | free (names); |
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1324 | |
1361 | |
1325 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1362 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
1326 | |
1363 | |
1327 | void |
1364 | void |
1328 | cancel (aio_req_ornot req) |
1365 | cancel (aio_req_ornot req) |
1329 | PROTOTYPE: |
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1330 | CODE: |
1366 | CODE: |
1331 | req_cancel (req); |
1367 | req_cancel (req); |
1332 | |
1368 | |
1333 | void |
1369 | void |
1334 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |
1370 | cb (aio_req_ornot req, SV *callback=&PL_sv_undef) |