1 | #define PERL_NO_GET_CONTEXT |
1 | #define _REENTRANT 1 |
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2 | #include <errno.h> |
2 | |
3 | |
3 | #include "EXTERN.h" |
4 | #include "EXTERN.h" |
4 | #include "perl.h" |
5 | #include "perl.h" |
5 | #include "XSUB.h" |
6 | #include "XSUB.h" |
6 | |
7 | |
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8 | #include "autoconf/config.h" |
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9 | |
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10 | #include <pthread.h> |
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11 | |
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12 | #include <stddef.h> |
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13 | #include <errno.h> |
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14 | #include <sys/time.h> |
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15 | #include <sys/select.h> |
7 | #include <sys/types.h> |
16 | #include <sys/types.h> |
8 | #include <sys/stat.h> |
17 | #include <sys/stat.h> |
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18 | #include <limits.h> |
9 | #include <unistd.h> |
19 | #include <unistd.h> |
10 | #include <fcntl.h> |
20 | #include <fcntl.h> |
11 | #include <signal.h> |
21 | #include <signal.h> |
12 | #include <sched.h> |
22 | #include <sched.h> |
13 | #include <endian.h> |
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14 | |
23 | |
15 | #include <pthread.h> |
24 | #if HAVE_SENDFILE |
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25 | # if __linux |
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26 | # include <sys/sendfile.h> |
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27 | # elif __freebsd |
16 | #include <sys/syscall.h> |
28 | # include <sys/socket.h> |
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29 | # include <sys/uio.h> |
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30 | # elif __hpux |
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31 | # include <sys/socket.h> |
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32 | # elif __solaris /* not yet */ |
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33 | # include <sys/sendfile.h> |
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34 | # else |
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35 | # error sendfile support requested but not available |
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36 | # endif |
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37 | #endif |
17 | |
38 | |
18 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
39 | /* used for struct dirent, AIX doesn't provide it */ |
19 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
40 | #ifndef NAME_MAX |
20 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
41 | # define NAME_MAX 4096 |
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42 | #endif |
21 | |
43 | |
22 | #if __i386 || __amd64 |
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23 | # define STACKSIZE ( 256 * sizeof (long)) |
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24 | #elif __ia64 |
44 | #if __ia64 |
25 | # define STACKSIZE (8192 * sizeof (long)) |
45 | # define STACKSIZE 65536 |
26 | #else |
46 | #else |
27 | # define STACKSIZE ( 512 * sizeof (long)) |
47 | # define STACKSIZE 8192 |
28 | #endif |
48 | #endif |
29 | |
49 | |
30 | enum { |
50 | enum { |
31 | REQ_QUIT, |
51 | REQ_QUIT, |
32 | REQ_OPEN, REQ_CLOSE, |
52 | REQ_OPEN, REQ_CLOSE, |
33 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
53 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
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54 | REQ_SENDFILE, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
55 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
56 | REQ_FSYNC, REQ_FDATASYNC, |
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57 | REQ_UNLINK, REQ_RMDIR, REQ_RENAME, |
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58 | REQ_READDIR, |
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59 | REQ_LINK, REQ_SYMLINK, |
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60 | REQ_SLEEP, |
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61 | REQ_GROUP, |
36 | }; |
62 | }; |
37 | |
63 | |
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64 | #define AIO_REQ_KLASS "IO::AIO::REQ" |
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65 | #define AIO_GRP_KLASS "IO::AIO::GRP" |
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66 | |
38 | typedef struct aio_cb { |
67 | typedef struct aio_cb |
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68 | { |
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69 | struct aio_cb *grp, *grp_prev, *grp_next; |
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70 | |
39 | struct aio_cb *next; |
71 | struct aio_cb *volatile next; |
40 | |
72 | |
41 | int type; |
73 | SV *self; /* the perl counterpart of this request, if any */ |
42 | |
74 | |
43 | int fd; |
75 | SV *data, *callback; |
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76 | SV *fh, *fh2; |
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77 | void *dataptr, *data2ptr; |
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78 | Stat_t *statdata; |
44 | off_t offset; |
79 | off_t offset; |
45 | size_t length; |
80 | size_t length; |
46 | ssize_t result; |
81 | ssize_t result; |
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82 | |
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83 | int type; |
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84 | int fd, fd2; |
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85 | int errorno; |
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86 | STRLEN dataoffset; |
47 | mode_t mode; /* open */ |
87 | mode_t mode; /* open */ |
48 | int errorno; |
88 | unsigned char cancelled; |
49 | SV *data, *callback; |
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50 | void *dataptr; |
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51 | STRLEN dataoffset; |
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52 | |
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53 | Stat_t *statdata; |
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54 | } aio_cb; |
89 | } aio_cb; |
55 | |
90 | |
56 | typedef aio_cb *aio_req; |
91 | typedef aio_cb *aio_req; |
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92 | typedef aio_cb *aio_req_ornot; |
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93 | typedef aio_cb *aio_group; |
57 | |
94 | |
58 | static int started; |
95 | static int started, wanted; |
59 | static int nreqs; |
96 | static volatile int nreqs; |
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97 | static int max_outstanding = 1<<30; |
60 | static int reqpipe[2], respipe[2]; |
98 | static int respipe [2]; |
61 | |
99 | |
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100 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
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101 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
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102 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
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103 | |
62 | static aio_req qs, qe; /* queue start, queue end */ |
104 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
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105 | static volatile aio_req ress, rese; /* queue start, queue end */ |
63 | |
106 | |
64 | static void *aio_proc(void *arg); |
107 | static void req_free (aio_req req); |
65 | |
108 | |
66 | static void |
109 | /* must be called at most once */ |
67 | start_thread (void) |
110 | static SV *req_sv (aio_req req, const char *klass) |
68 | { |
111 | { |
69 | sigset_t fullsigset, oldsigset; |
112 | req->self = (SV *)newHV (); |
70 | pthread_t tid; |
113 | sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0); |
71 | pthread_attr_t attr; |
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72 | |
114 | |
73 | pthread_attr_init (&attr); |
115 | return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1))); |
74 | pthread_attr_setstacksize (&attr, STACKSIZE); |
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75 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
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76 | |
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77 | sigfillset (&fullsigset); |
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78 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
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79 | |
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80 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
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81 | started++; |
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82 | |
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83 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
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84 | } |
116 | } |
85 | |
117 | |
86 | static void |
118 | static aio_req SvAIO_REQ (SV *sv) |
87 | send_reqs (void) |
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88 | { |
119 | { |
89 | /* this write is atomic */ |
120 | if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv)) |
90 | while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs) |
121 | croak ("object of class " AIO_REQ_KLASS " expected"); |
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122 | |
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123 | MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext); |
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124 | |
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125 | return mg ? (aio_req)mg->mg_ptr : 0; |
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126 | } |
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127 | |
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128 | static void poll_wait () |
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129 | { |
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130 | if (nreqs && !ress) |
91 | { |
131 | { |
92 | qs = qs->next; |
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93 | if (!qs) qe = 0; |
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94 | } |
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95 | } |
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96 | |
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97 | static void |
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98 | send_req (aio_req req) |
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99 | { |
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100 | nreqs++; |
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101 | req->next = 0; |
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102 | |
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103 | if (qe) |
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104 | { |
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105 | qe->next = req; |
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106 | qe = req; |
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107 | } |
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108 | else |
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109 | qe = qs = req; |
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110 | |
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111 | send_reqs (); |
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112 | } |
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113 | |
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114 | static void |
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115 | end_thread (void) |
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116 | { |
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117 | aio_req req; |
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118 | New (0, req, 1, aio_cb); |
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119 | req->type = REQ_QUIT; |
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120 | |
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121 | send_req (req); |
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122 | } |
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123 | |
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124 | static void |
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125 | read_write (pTHX_ |
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126 | int dowrite, int fd, off_t offset, size_t length, |
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127 | SV *data, STRLEN dataoffset, SV *callback) |
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128 | { |
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129 | aio_req req; |
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130 | STRLEN svlen; |
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131 | char *svptr = SvPV (data, svlen); |
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132 | |
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133 | SvUPGRADE (data, SVt_PV); |
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134 | SvPOK_on (data); |
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135 | |
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136 | if (dataoffset < 0) |
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137 | dataoffset += svlen; |
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138 | |
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139 | if (dataoffset < 0 || dataoffset > svlen) |
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140 | croak ("data offset outside of string"); |
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141 | |
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142 | if (dowrite) |
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143 | { |
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144 | /* write: check length and adjust. */ |
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145 | if (length < 0 || length + dataoffset > svlen) |
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146 | length = svlen - dataoffset; |
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147 | } |
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148 | else |
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149 | { |
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150 | /* read: grow scalar as necessary */ |
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151 | svptr = SvGROW (data, length + dataoffset); |
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152 | } |
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153 | |
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154 | if (length < 0) |
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155 | croak ("length must not be negative"); |
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156 | |
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157 | Newz (0, req, 1, aio_cb); |
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158 | |
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159 | if (!req) |
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160 | croak ("out of memory during aio_req allocation"); |
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161 | |
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162 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
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163 | req->fd = fd; |
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164 | req->offset = offset; |
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165 | req->length = length; |
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166 | req->data = SvREFCNT_inc (data); |
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167 | req->dataptr = (char *)svptr + dataoffset; |
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168 | req->callback = SvREFCNT_inc (callback); |
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169 | |
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170 | send_req (req); |
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171 | } |
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172 | |
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173 | static void |
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174 | poll_wait () |
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175 | { |
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176 | fd_set rfd; |
132 | fd_set rfd; |
177 | FD_ZERO(&rfd); |
133 | FD_ZERO(&rfd); |
178 | FD_SET(respipe[0], &rfd); |
134 | FD_SET(respipe [0], &rfd); |
179 | |
135 | |
180 | select (respipe[0] + 1, &rfd, 0, 0, 0); |
136 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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137 | } |
181 | } |
138 | } |
182 | |
139 | |
183 | static int |
140 | static void req_invoke (aio_req req) |
184 | poll_cb (pTHX) |
141 | { |
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142 | dSP; |
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143 | int errorno = errno; |
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144 | |
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145 | if (req->cancelled || !SvOK (req->callback)) |
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146 | return; |
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147 | |
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148 | errno = req->errorno; |
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149 | |
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150 | ENTER; |
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151 | PUSHMARK (SP); |
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152 | |
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153 | switch (req->type) |
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154 | { |
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155 | case REQ_READDIR: |
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156 | { |
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157 | SV *rv = &PL_sv_undef; |
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158 | |
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159 | if (req->result >= 0) |
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160 | { |
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161 | char *buf = req->data2ptr; |
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162 | AV *av = newAV (); |
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163 | |
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164 | while (req->result) |
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165 | { |
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166 | SV *sv = newSVpv (buf, 0); |
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167 | |
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168 | av_push (av, sv); |
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169 | buf += SvCUR (sv) + 1; |
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170 | req->result--; |
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171 | } |
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172 | |
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173 | rv = sv_2mortal (newRV_noinc ((SV *)av)); |
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174 | } |
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175 | |
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176 | XPUSHs (rv); |
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177 | } |
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178 | break; |
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179 | |
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180 | case REQ_OPEN: |
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181 | { |
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182 | /* convert fd to fh */ |
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183 | SV *fh; |
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184 | |
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185 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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186 | PUTBACK; |
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187 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
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188 | SPAGAIN; |
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189 | |
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190 | fh = SvREFCNT_inc (POPs); |
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191 | |
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192 | PUSHMARK (SP); |
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193 | XPUSHs (sv_2mortal (fh)); |
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194 | } |
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195 | break; |
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196 | |
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197 | case REQ_SLEEP: |
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198 | case REQ_GROUP: |
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199 | break; |
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200 | |
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201 | default: |
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202 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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203 | break; |
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204 | } |
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205 | |
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206 | |
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207 | PUTBACK; |
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208 | call_sv (req->callback, G_VOID | G_EVAL); |
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209 | SPAGAIN; |
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210 | |
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211 | if (SvTRUE (ERRSV)) |
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212 | { |
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213 | req_free (req); |
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214 | croak (0); |
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215 | } |
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216 | |
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217 | LEAVE; |
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218 | |
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219 | errno = errorno; |
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220 | } |
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221 | |
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222 | static void req_free (aio_req req) |
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223 | { |
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224 | if (req->grp) |
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225 | { |
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226 | aio_req grp = req->grp; |
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227 | |
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228 | /* unlink request */ |
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229 | req->grp_next->grp_prev = req->grp_prev; |
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230 | req->grp_prev->grp_next = req->grp_next; |
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231 | |
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232 | if (grp->grp_next == grp) |
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233 | { |
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234 | req_invoke (grp); |
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235 | req_free (grp); |
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236 | } |
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237 | } |
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238 | |
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239 | if (req->self) |
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240 | { |
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241 | sv_unmagic (req->self, PERL_MAGIC_ext); |
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242 | SvREFCNT_dec (req->self); |
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243 | } |
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244 | |
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245 | if (req->data) |
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246 | SvREFCNT_dec (req->data); |
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247 | |
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248 | if (req->fh) |
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249 | SvREFCNT_dec (req->fh); |
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250 | |
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251 | if (req->fh2) |
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252 | SvREFCNT_dec (req->fh2); |
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253 | |
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254 | if (req->statdata) |
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255 | Safefree (req->statdata); |
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256 | |
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257 | if (req->callback) |
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258 | SvREFCNT_dec (req->callback); |
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259 | |
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260 | if (req->type == REQ_READDIR && req->result >= 0) |
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261 | free (req->data2ptr); |
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262 | |
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263 | Safefree (req); |
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264 | } |
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265 | |
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266 | static void req_cancel (aio_req req) |
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267 | { |
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268 | req->cancelled = 1; |
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269 | |
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270 | if (req->type == REQ_GROUP) |
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271 | { |
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272 | aio_req sub; |
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273 | |
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274 | for (sub = req->grp_next; sub != req; sub = sub->grp_next) |
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275 | req_cancel (sub); |
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276 | } |
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277 | } |
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278 | |
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279 | static int poll_cb () |
185 | { |
280 | { |
186 | dSP; |
281 | dSP; |
187 | int count = 0; |
282 | int count = 0; |
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283 | int do_croak = 0; |
188 | aio_req req; |
284 | aio_req req; |
189 | |
285 | |
190 | while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
286 | for (;;) |
191 | { |
287 | { |
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288 | pthread_mutex_lock (&reslock); |
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289 | req = ress; |
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290 | |
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291 | if (req) |
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292 | { |
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293 | ress = req->next; |
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294 | |
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295 | if (!ress) |
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296 | { |
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297 | /* read any signals sent by the worker threads */ |
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298 | char buf [32]; |
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299 | while (read (respipe [0], buf, 32) == 32) |
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300 | ; |
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301 | |
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302 | rese = 0; |
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303 | } |
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304 | } |
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305 | |
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306 | pthread_mutex_unlock (&reslock); |
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307 | |
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308 | if (!req) |
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309 | break; |
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310 | |
192 | nreqs--; |
311 | nreqs--; |
193 | |
312 | |
194 | if (req->type == REQ_QUIT) |
313 | if (req->type == REQ_QUIT) |
195 | started--; |
314 | started--; |
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315 | else if (req->type == REQ_GROUP && req->grp_next != req) |
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316 | continue; |
196 | else |
317 | else |
197 | { |
318 | { |
198 | int errorno = errno; |
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199 | errno = req->errorno; |
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200 | |
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201 | if (req->type == REQ_READ) |
319 | if (req->type == REQ_READ) |
202 | SvCUR_set (req->data, req->dataoffset |
320 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
203 | + req->result > 0 ? req->result : 0); |
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204 | |
321 | |
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322 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
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323 | SvREADONLY_off (req->data); |
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324 | |
205 | if (req->data) |
325 | if (req->statdata) |
206 | SvREFCNT_dec (req->data); |
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207 | |
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208 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
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209 | { |
326 | { |
210 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
327 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
211 | PL_laststatval = req->result; |
328 | PL_laststatval = req->result; |
212 | PL_statcache = *(req->statdata); |
329 | PL_statcache = *(req->statdata); |
213 | |
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214 | Safefree (req->statdata); |
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215 | } |
330 | } |
216 | |
331 | |
217 | PUSHMARK (SP); |
332 | req_invoke (req); |
218 | XPUSHs (sv_2mortal (newSViv (req->result))); |
|
|
219 | |
333 | |
220 | if (req->type == REQ_OPEN) |
|
|
221 | { |
|
|
222 | /* convert fd to fh */ |
|
|
223 | SV *fh; |
|
|
224 | |
|
|
225 | PUTBACK; |
|
|
226 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
|
|
227 | SPAGAIN; |
|
|
228 | |
|
|
229 | fh = POPs; |
|
|
230 | |
|
|
231 | PUSHMARK (SP); |
|
|
232 | XPUSHs (fh); |
|
|
233 | } |
|
|
234 | |
|
|
235 | PUTBACK; |
|
|
236 | call_sv (req->callback, G_VOID | G_EVAL); |
|
|
237 | SPAGAIN; |
|
|
238 | |
|
|
239 | if (req->callback) |
|
|
240 | SvREFCNT_dec (req->callback); |
|
|
241 | |
|
|
242 | errno = errorno; |
|
|
243 | count++; |
334 | count++; |
244 | } |
335 | } |
245 | |
336 | |
246 | Safefree (req); |
337 | req_free (req); |
247 | } |
338 | } |
248 | |
|
|
249 | if (qs) |
|
|
250 | send_reqs (); |
|
|
251 | |
339 | |
252 | return count; |
340 | return count; |
253 | } |
341 | } |
254 | |
342 | |
255 | static void * |
343 | static void *aio_proc(void *arg); |
256 | aio_proc (void *thr_arg) |
344 | |
|
|
345 | static void start_thread (void) |
|
|
346 | { |
|
|
347 | sigset_t fullsigset, oldsigset; |
|
|
348 | pthread_t tid; |
|
|
349 | pthread_attr_t attr; |
|
|
350 | |
|
|
351 | pthread_attr_init (&attr); |
|
|
352 | pthread_attr_setstacksize (&attr, STACKSIZE); |
|
|
353 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
|
|
354 | |
|
|
355 | sigfillset (&fullsigset); |
|
|
356 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
|
|
357 | |
|
|
358 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
|
|
359 | started++; |
|
|
360 | |
|
|
361 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
|
|
362 | } |
|
|
363 | |
|
|
364 | static void req_send (aio_req req) |
|
|
365 | { |
|
|
366 | while (started < wanted && nreqs >= started) |
|
|
367 | start_thread (); |
|
|
368 | |
|
|
369 | nreqs++; |
|
|
370 | |
|
|
371 | pthread_mutex_lock (&reqlock); |
|
|
372 | |
|
|
373 | req->next = 0; |
|
|
374 | |
|
|
375 | if (reqe) |
|
|
376 | { |
|
|
377 | reqe->next = req; |
|
|
378 | reqe = req; |
|
|
379 | } |
|
|
380 | else |
|
|
381 | reqe = reqs = req; |
|
|
382 | |
|
|
383 | pthread_cond_signal (&reqwait); |
|
|
384 | pthread_mutex_unlock (&reqlock); |
|
|
385 | |
|
|
386 | if (nreqs > max_outstanding) |
|
|
387 | for (;;) |
|
|
388 | { |
|
|
389 | poll_cb (); |
|
|
390 | |
|
|
391 | if (nreqs <= max_outstanding) |
|
|
392 | break; |
|
|
393 | |
|
|
394 | poll_wait (); |
|
|
395 | } |
|
|
396 | } |
|
|
397 | |
|
|
398 | static void end_thread (void) |
257 | { |
399 | { |
258 | aio_req req; |
400 | aio_req req; |
|
|
401 | Newz (0, req, 1, aio_cb); |
|
|
402 | req->type = REQ_QUIT; |
259 | |
403 | |
260 | /* then loop */ |
404 | req_send (req); |
261 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
405 | } |
|
|
406 | |
|
|
407 | static void min_parallel (int nthreads) |
|
|
408 | { |
|
|
409 | if (wanted < nthreads) |
|
|
410 | wanted = nthreads; |
|
|
411 | } |
|
|
412 | |
|
|
413 | static void max_parallel (int nthreads) |
|
|
414 | { |
|
|
415 | int cur = started; |
|
|
416 | |
|
|
417 | if (wanted > nthreads) |
|
|
418 | wanted = nthreads; |
|
|
419 | |
|
|
420 | while (cur > wanted) |
|
|
421 | { |
|
|
422 | end_thread (); |
|
|
423 | cur--; |
262 | { |
424 | } |
|
|
425 | |
|
|
426 | while (started > wanted) |
|
|
427 | { |
|
|
428 | poll_wait (); |
|
|
429 | poll_cb (); |
|
|
430 | } |
|
|
431 | } |
|
|
432 | |
|
|
433 | static void create_pipe () |
|
|
434 | { |
|
|
435 | if (pipe (respipe)) |
|
|
436 | croak ("unable to initialize result pipe"); |
|
|
437 | |
|
|
438 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
|
|
439 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
440 | |
|
|
441 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
|
|
442 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
443 | } |
|
|
444 | |
|
|
445 | /*****************************************************************************/ |
|
|
446 | /* work around various missing functions */ |
|
|
447 | |
|
|
448 | #if !HAVE_PREADWRITE |
|
|
449 | # define pread aio_pread |
|
|
450 | # define pwrite aio_pwrite |
|
|
451 | |
|
|
452 | /* |
|
|
453 | * make our pread/pwrite safe against themselves, but not against |
|
|
454 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
455 | * but that's your problem, not mine. |
|
|
456 | */ |
|
|
457 | static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER; |
|
|
458 | |
|
|
459 | static ssize_t pread (int fd, void *buf, size_t count, off_t offset) |
|
|
460 | { |
|
|
461 | ssize_t res; |
|
|
462 | off_t ooffset; |
|
|
463 | |
|
|
464 | pthread_mutex_lock (&preadwritelock); |
|
|
465 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
466 | lseek (fd, offset, SEEK_SET); |
|
|
467 | res = read (fd, buf, count); |
|
|
468 | lseek (fd, ooffset, SEEK_SET); |
|
|
469 | pthread_mutex_unlock (&preadwritelock); |
|
|
470 | |
|
|
471 | return res; |
|
|
472 | } |
|
|
473 | |
|
|
474 | static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset) |
|
|
475 | { |
|
|
476 | ssize_t res; |
|
|
477 | off_t ooffset; |
|
|
478 | |
|
|
479 | pthread_mutex_lock (&preadwritelock); |
|
|
480 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
481 | lseek (fd, offset, SEEK_SET); |
|
|
482 | res = write (fd, buf, count); |
|
|
483 | lseek (fd, offset, SEEK_SET); |
|
|
484 | pthread_mutex_unlock (&preadwritelock); |
|
|
485 | |
|
|
486 | return res; |
|
|
487 | } |
|
|
488 | #endif |
|
|
489 | |
|
|
490 | #if !HAVE_FDATASYNC |
|
|
491 | # define fdatasync fsync |
|
|
492 | #endif |
|
|
493 | |
|
|
494 | #if !HAVE_READAHEAD |
|
|
495 | # define readahead aio_readahead |
|
|
496 | |
|
|
497 | static ssize_t readahead (int fd, off_t offset, size_t count) |
|
|
498 | { |
|
|
499 | char readahead_buf[4096]; |
|
|
500 | |
|
|
501 | while (count > 0) |
|
|
502 | { |
|
|
503 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
|
|
504 | |
|
|
505 | pread (fd, readahead_buf, len, offset); |
|
|
506 | offset += len; |
|
|
507 | count -= len; |
|
|
508 | } |
|
|
509 | |
|
|
510 | errno = 0; |
|
|
511 | } |
|
|
512 | #endif |
|
|
513 | |
|
|
514 | #if !HAVE_READDIR_R |
|
|
515 | # define readdir_r aio_readdir_r |
|
|
516 | |
|
|
517 | static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER; |
|
|
518 | |
|
|
519 | static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res) |
|
|
520 | { |
|
|
521 | struct dirent *e; |
|
|
522 | int errorno; |
|
|
523 | |
|
|
524 | pthread_mutex_lock (&readdirlock); |
|
|
525 | |
|
|
526 | e = readdir (dirp); |
|
|
527 | errorno = errno; |
|
|
528 | |
|
|
529 | if (e) |
|
|
530 | { |
|
|
531 | *res = ent; |
|
|
532 | strcpy (ent->d_name, e->d_name); |
|
|
533 | } |
|
|
534 | else |
|
|
535 | *res = 0; |
|
|
536 | |
|
|
537 | pthread_mutex_unlock (&readdirlock); |
|
|
538 | |
|
|
539 | errno = errorno; |
|
|
540 | return e ? 0 : -1; |
|
|
541 | } |
|
|
542 | #endif |
|
|
543 | |
|
|
544 | /* sendfile always needs emulation */ |
|
|
545 | static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count) |
|
|
546 | { |
|
|
547 | ssize_t res; |
|
|
548 | |
|
|
549 | if (!count) |
|
|
550 | return 0; |
|
|
551 | |
|
|
552 | #if HAVE_SENDFILE |
|
|
553 | # if __linux |
|
|
554 | res = sendfile (ofd, ifd, &offset, count); |
|
|
555 | |
|
|
556 | # elif __freebsd |
|
|
557 | /* |
|
|
558 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
|
|
559 | * wasted on making it similar to other I/O functions. |
|
|
560 | */ |
|
|
561 | { |
|
|
562 | off_t sbytes; |
|
|
563 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
|
|
564 | |
|
|
565 | if (res < 0 && sbytes) |
|
|
566 | /* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */ |
|
|
567 | res = sbytes; |
|
|
568 | } |
|
|
569 | |
|
|
570 | # elif __hpux |
|
|
571 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
|
|
572 | |
|
|
573 | # elif __solaris |
|
|
574 | { |
|
|
575 | struct sendfilevec vec; |
|
|
576 | size_t sbytes; |
|
|
577 | |
|
|
578 | vec.sfv_fd = ifd; |
|
|
579 | vec.sfv_flag = 0; |
|
|
580 | vec.sfv_off = offset; |
|
|
581 | vec.sfv_len = count; |
|
|
582 | |
|
|
583 | res = sendfilev (ofd, &vec, 1, &sbytes); |
|
|
584 | |
|
|
585 | if (res < 0 && sbytes) |
|
|
586 | res = sbytes; |
|
|
587 | } |
|
|
588 | |
|
|
589 | # endif |
|
|
590 | #else |
|
|
591 | res = -1; |
|
|
592 | errno = ENOSYS; |
|
|
593 | #endif |
|
|
594 | |
|
|
595 | if (res < 0 |
|
|
596 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
597 | #if __solaris |
|
|
598 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
|
|
599 | #endif |
|
|
600 | ) |
|
|
601 | ) |
|
|
602 | { |
|
|
603 | /* emulate sendfile. this is a major pain in the ass */ |
|
|
604 | char buf[4096]; |
|
|
605 | res = 0; |
|
|
606 | |
|
|
607 | while (count) |
|
|
608 | { |
|
|
609 | ssize_t cnt; |
|
|
610 | |
|
|
611 | cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset); |
|
|
612 | |
|
|
613 | if (cnt <= 0) |
|
|
614 | { |
|
|
615 | if (cnt && !res) res = -1; |
|
|
616 | break; |
|
|
617 | } |
|
|
618 | |
|
|
619 | cnt = write (ofd, buf, cnt); |
|
|
620 | |
|
|
621 | if (cnt <= 0) |
|
|
622 | { |
|
|
623 | if (cnt && !res) res = -1; |
|
|
624 | break; |
|
|
625 | } |
|
|
626 | |
|
|
627 | offset += cnt; |
|
|
628 | res += cnt; |
|
|
629 | count -= cnt; |
|
|
630 | } |
|
|
631 | } |
|
|
632 | |
|
|
633 | return res; |
|
|
634 | } |
|
|
635 | |
|
|
636 | /* read a full directory */ |
|
|
637 | static int scandir_ (const char *path, void **namesp) |
|
|
638 | { |
|
|
639 | DIR *dirp = opendir (path); |
|
|
640 | union |
|
|
641 | { |
|
|
642 | struct dirent d; |
|
|
643 | char b [offsetof (struct dirent, d_name) + NAME_MAX + 1]; |
|
|
644 | } u; |
|
|
645 | struct dirent *entp; |
|
|
646 | char *name, *names; |
|
|
647 | int memlen = 4096; |
|
|
648 | int memofs = 0; |
|
|
649 | int res = 0; |
|
|
650 | int errorno; |
|
|
651 | |
|
|
652 | if (!dirp) |
|
|
653 | return -1; |
|
|
654 | |
|
|
655 | names = malloc (memlen); |
|
|
656 | |
|
|
657 | for (;;) |
|
|
658 | { |
|
|
659 | errno = 0, readdir_r (dirp, &u.d, &entp); |
|
|
660 | |
|
|
661 | if (!entp) |
|
|
662 | break; |
|
|
663 | |
|
|
664 | name = entp->d_name; |
|
|
665 | |
|
|
666 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
|
|
667 | { |
|
|
668 | int len = strlen (name) + 1; |
|
|
669 | |
|
|
670 | res++; |
|
|
671 | |
|
|
672 | while (memofs + len > memlen) |
|
|
673 | { |
|
|
674 | memlen *= 2; |
|
|
675 | names = realloc (names, memlen); |
|
|
676 | if (!names) |
|
|
677 | break; |
|
|
678 | } |
|
|
679 | |
|
|
680 | memcpy (names + memofs, name, len); |
|
|
681 | memofs += len; |
|
|
682 | } |
|
|
683 | } |
|
|
684 | |
|
|
685 | errorno = errno; |
|
|
686 | closedir (dirp); |
|
|
687 | |
|
|
688 | if (errorno) |
|
|
689 | { |
|
|
690 | free (names); |
|
|
691 | errno = errorno; |
|
|
692 | res = -1; |
|
|
693 | } |
|
|
694 | |
|
|
695 | *namesp = (void *)names; |
|
|
696 | return res; |
|
|
697 | } |
|
|
698 | |
|
|
699 | /*****************************************************************************/ |
|
|
700 | |
|
|
701 | static void *aio_proc (void *thr_arg) |
|
|
702 | { |
|
|
703 | aio_req req; |
|
|
704 | int type; |
|
|
705 | |
|
|
706 | do |
|
|
707 | { |
|
|
708 | pthread_mutex_lock (&reqlock); |
|
|
709 | |
|
|
710 | for (;;) |
|
|
711 | { |
|
|
712 | req = reqs; |
|
|
713 | |
|
|
714 | if (reqs) |
|
|
715 | { |
|
|
716 | reqs = reqs->next; |
|
|
717 | if (!reqs) reqe = 0; |
|
|
718 | } |
|
|
719 | |
|
|
720 | if (req) |
|
|
721 | break; |
|
|
722 | |
|
|
723 | pthread_cond_wait (&reqwait, &reqlock); |
|
|
724 | } |
|
|
725 | |
|
|
726 | pthread_mutex_unlock (&reqlock); |
|
|
727 | |
263 | errno = 0; /* strictly unnecessary */ |
728 | errno = 0; /* strictly unnecessary */ |
264 | |
729 | |
|
|
730 | if (!req->cancelled) |
265 | switch (req->type) |
731 | switch (req->type) |
|
|
732 | { |
|
|
733 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
|
|
734 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
|
|
735 | |
|
|
736 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
|
|
737 | case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break; |
|
|
738 | |
|
|
739 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
|
|
740 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
|
|
741 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
|
|
742 | |
|
|
743 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
|
|
744 | case REQ_CLOSE: req->result = close (req->fd); break; |
|
|
745 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
|
|
746 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
747 | case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break; |
|
|
748 | case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break; |
|
|
749 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
|
|
750 | |
|
|
751 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
752 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
|
|
753 | case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break; |
|
|
754 | |
|
|
755 | case REQ_SLEEP: |
|
|
756 | { |
|
|
757 | struct timeval tv; |
|
|
758 | |
|
|
759 | tv.tv_sec = req->fd; |
|
|
760 | tv.tv_usec = req->fd2; |
|
|
761 | |
|
|
762 | req->result = select (0, 0, 0, 0, &tv); |
|
|
763 | } |
|
|
764 | |
|
|
765 | case REQ_QUIT: |
|
|
766 | break; |
|
|
767 | |
|
|
768 | default: |
|
|
769 | req->result = ENOSYS; |
|
|
770 | break; |
|
|
771 | } |
|
|
772 | |
|
|
773 | req->errorno = errno; |
|
|
774 | |
|
|
775 | pthread_mutex_lock (&reslock); |
|
|
776 | |
|
|
777 | req->next = 0; |
|
|
778 | |
|
|
779 | if (rese) |
266 | { |
780 | { |
267 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
781 | rese->next = req; |
268 | case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; |
782 | rese = req; |
269 | #if SYS_readahead |
783 | } |
270 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
784 | else |
271 | #else |
785 | { |
272 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
786 | rese = ress = req; |
|
|
787 | |
|
|
788 | /* write a dummy byte to the pipe so fh becomes ready */ |
|
|
789 | write (respipe [1], &respipe, 1); |
|
|
790 | } |
|
|
791 | |
|
|
792 | pthread_mutex_unlock (&reslock); |
|
|
793 | } |
|
|
794 | while (type != REQ_QUIT); |
|
|
795 | |
|
|
796 | return 0; |
|
|
797 | } |
|
|
798 | |
|
|
799 | /*****************************************************************************/ |
|
|
800 | |
|
|
801 | static void atfork_prepare (void) |
|
|
802 | { |
|
|
803 | pthread_mutex_lock (&reqlock); |
|
|
804 | pthread_mutex_lock (&reslock); |
|
|
805 | #if !HAVE_PREADWRITE |
|
|
806 | pthread_mutex_lock (&preadwritelock); |
273 | #endif |
807 | #endif |
|
|
808 | #if !HAVE_READDIR_R |
|
|
809 | pthread_mutex_lock (&readdirlock); |
|
|
810 | #endif |
|
|
811 | } |
274 | |
812 | |
275 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
813 | static void atfork_parent (void) |
276 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
814 | { |
277 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
815 | #if !HAVE_READDIR_R |
|
|
816 | pthread_mutex_unlock (&readdirlock); |
|
|
817 | #endif |
|
|
818 | #if !HAVE_PREADWRITE |
|
|
819 | pthread_mutex_unlock (&preadwritelock); |
|
|
820 | #endif |
|
|
821 | pthread_mutex_unlock (&reslock); |
|
|
822 | pthread_mutex_unlock (&reqlock); |
|
|
823 | } |
278 | |
824 | |
279 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
825 | static void atfork_child (void) |
280 | case REQ_CLOSE: req->result = close (req->fd); break; |
826 | { |
281 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
827 | aio_req prv; |
282 | |
828 | |
283 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
829 | started = 0; |
284 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
285 | |
830 | |
286 | case REQ_QUIT: |
831 | while (reqs) |
287 | write (respipe[1], (void *)&req, sizeof (req)); |
|
|
288 | return 0; |
|
|
289 | |
|
|
290 | default: |
|
|
291 | req->result = ENOSYS; |
|
|
292 | break; |
|
|
293 | } |
|
|
294 | |
|
|
295 | req->errorno = errno; |
|
|
296 | write (respipe[1], (void *)&req, sizeof (req)); |
|
|
297 | } |
832 | { |
|
|
833 | prv = reqs; |
|
|
834 | reqs = prv->next; |
|
|
835 | req_free (prv); |
|
|
836 | } |
298 | |
837 | |
299 | return 0; |
838 | reqs = reqe = 0; |
300 | } |
839 | |
|
|
840 | while (ress) |
|
|
841 | { |
|
|
842 | prv = ress; |
|
|
843 | ress = prv->next; |
|
|
844 | req_free (prv); |
|
|
845 | } |
|
|
846 | |
|
|
847 | ress = rese = 0; |
301 | |
848 | |
|
|
849 | close (respipe [0]); |
|
|
850 | close (respipe [1]); |
|
|
851 | create_pipe (); |
|
|
852 | |
|
|
853 | atfork_parent (); |
|
|
854 | } |
|
|
855 | |
|
|
856 | #define dREQ \ |
|
|
857 | aio_req req; \ |
|
|
858 | \ |
|
|
859 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
860 | croak ("callback must be undef or of reference type"); \ |
|
|
861 | \ |
|
|
862 | Newz (0, req, 1, aio_cb); \ |
|
|
863 | if (!req) \ |
|
|
864 | croak ("out of memory during aio_req allocation"); \ |
|
|
865 | \ |
|
|
866 | req->callback = newSVsv (callback) |
|
|
867 | |
|
|
868 | #define REQ_SEND \ |
|
|
869 | req_send (req); \ |
|
|
870 | \ |
|
|
871 | if (GIMME_V != G_VOID) \ |
|
|
872 | XPUSHs (req_sv (req, AIO_REQ_KLASS)); |
|
|
873 | |
302 | MODULE = IO::AIO PACKAGE = IO::AIO |
874 | MODULE = IO::AIO PACKAGE = IO::AIO |
303 | |
875 | |
|
|
876 | PROTOTYPES: ENABLE |
|
|
877 | |
304 | BOOT: |
878 | BOOT: |
305 | { |
879 | { |
306 | if (pipe (reqpipe) || pipe (respipe)) |
880 | HV *stash = gv_stashpv ("IO::AIO", 1); |
307 | croak ("unable to initialize request or result pipe"); |
881 | newCONSTSUB (stash, "EXDEV", newSViv (EXDEV)); |
|
|
882 | newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY)); |
|
|
883 | newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY)); |
308 | |
884 | |
309 | if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) |
885 | create_pipe (); |
310 | croak ("cannot set result pipe to nonblocking mode"); |
886 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
311 | |
|
|
312 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
|
|
313 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
314 | } |
887 | } |
315 | |
888 | |
316 | void |
889 | void |
317 | min_parallel(nthreads) |
890 | min_parallel (nthreads) |
318 | int nthreads |
891 | int nthreads |
319 | PROTOTYPE: $ |
892 | PROTOTYPE: $ |
320 | CODE: |
|
|
321 | while (nthreads > started) |
|
|
322 | start_thread (); |
|
|
323 | |
893 | |
324 | void |
894 | void |
325 | max_parallel(nthreads) |
895 | max_parallel (nthreads) |
326 | int nthreads |
896 | int nthreads |
327 | PROTOTYPE: $ |
897 | PROTOTYPE: $ |
|
|
898 | |
|
|
899 | int |
|
|
900 | max_outstanding (nreqs) |
|
|
901 | int nreqs |
|
|
902 | PROTOTYPE: $ |
328 | CODE: |
903 | CODE: |
329 | { |
904 | RETVAL = max_outstanding; |
330 | int cur = started; |
905 | max_outstanding = nreqs; |
331 | while (cur > nthreads) |
|
|
332 | { |
|
|
333 | end_thread (); |
|
|
334 | cur--; |
|
|
335 | } |
|
|
336 | |
906 | |
337 | while (started > nthreads) |
|
|
338 | { |
|
|
339 | poll_wait (); |
|
|
340 | poll_cb (aTHX); |
|
|
341 | } |
|
|
342 | } |
|
|
343 | |
|
|
344 | void |
907 | void |
345 | aio_open(pathname,flags,mode,callback) |
908 | aio_open (pathname,flags,mode,callback=&PL_sv_undef) |
346 | SV * pathname |
909 | SV * pathname |
347 | int flags |
910 | int flags |
348 | int mode |
911 | int mode |
349 | SV * callback |
912 | SV * callback |
350 | PROTOTYPE: $$$$ |
913 | PROTOTYPE: $$$;$ |
351 | CODE: |
914 | PPCODE: |
352 | { |
915 | { |
353 | aio_req req; |
916 | dREQ; |
354 | |
|
|
355 | Newz (0, req, 1, aio_cb); |
|
|
356 | |
|
|
357 | if (!req) |
|
|
358 | croak ("out of memory during aio_req allocation"); |
|
|
359 | |
917 | |
360 | req->type = REQ_OPEN; |
918 | req->type = REQ_OPEN; |
361 | req->data = newSVsv (pathname); |
919 | req->data = newSVsv (pathname); |
362 | req->dataptr = SvPV_nolen (req->data); |
920 | req->dataptr = SvPVbyte_nolen (req->data); |
363 | req->fd = flags; |
921 | req->fd = flags; |
364 | req->mode = mode; |
922 | req->mode = mode; |
365 | req->callback = SvREFCNT_inc (callback); |
|
|
366 | |
923 | |
367 | send_req (req); |
924 | REQ_SEND; |
368 | } |
925 | } |
369 | |
926 | |
370 | void |
927 | void |
371 | aio_close(fh,callback) |
928 | aio_close (fh,callback=&PL_sv_undef) |
372 | InputStream fh |
929 | SV * fh |
373 | SV * callback |
930 | SV * callback |
374 | PROTOTYPE: $$ |
931 | PROTOTYPE: $;$ |
375 | ALIAS: |
932 | ALIAS: |
376 | aio_close = REQ_CLOSE |
933 | aio_close = REQ_CLOSE |
377 | aio_fsync = REQ_FSYNC |
934 | aio_fsync = REQ_FSYNC |
378 | aio_fdatasync = REQ_FDATASYNC |
935 | aio_fdatasync = REQ_FDATASYNC |
379 | CODE: |
936 | PPCODE: |
|
|
937 | { |
|
|
938 | dREQ; |
|
|
939 | |
|
|
940 | req->type = ix; |
|
|
941 | req->fh = newSVsv (fh); |
|
|
942 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
943 | |
|
|
944 | REQ_SEND (req); |
|
|
945 | } |
|
|
946 | |
|
|
947 | void |
|
|
948 | aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
|
|
949 | SV * fh |
|
|
950 | UV offset |
|
|
951 | UV length |
|
|
952 | SV * data |
|
|
953 | UV dataoffset |
|
|
954 | SV * callback |
|
|
955 | ALIAS: |
|
|
956 | aio_read = REQ_READ |
|
|
957 | aio_write = REQ_WRITE |
|
|
958 | PROTOTYPE: $$$$$;$ |
|
|
959 | PPCODE: |
380 | { |
960 | { |
381 | aio_req req; |
961 | aio_req req; |
|
|
962 | STRLEN svlen; |
|
|
963 | char *svptr = SvPVbyte (data, svlen); |
382 | |
964 | |
383 | Newz (0, req, 1, aio_cb); |
965 | SvUPGRADE (data, SVt_PV); |
|
|
966 | SvPOK_on (data); |
384 | |
967 | |
385 | if (!req) |
968 | if (dataoffset < 0) |
386 | croak ("out of memory during aio_req allocation"); |
969 | dataoffset += svlen; |
387 | |
970 | |
388 | req->type = ix; |
971 | if (dataoffset < 0 || dataoffset > svlen) |
389 | req->fd = PerlIO_fileno (fh); |
972 | croak ("data offset outside of string"); |
390 | req->callback = SvREFCNT_inc (callback); |
|
|
391 | |
973 | |
392 | send_req (req); |
974 | if (ix == REQ_WRITE) |
393 | } |
975 | { |
394 | |
976 | /* write: check length and adjust. */ |
395 | void |
977 | if (length < 0 || length + dataoffset > svlen) |
396 | aio_read(fh,offset,length,data,dataoffset,callback) |
978 | length = svlen - dataoffset; |
397 | InputStream fh |
979 | } |
398 | UV offset |
980 | else |
399 | IV length |
981 | { |
400 | SV * data |
982 | /* read: grow scalar as necessary */ |
401 | IV dataoffset |
983 | svptr = SvGROW (data, length + dataoffset); |
402 | SV * callback |
984 | } |
403 | PROTOTYPE: $$$$$$ |
|
|
404 | CODE: |
|
|
405 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
406 | |
|
|
407 | void |
|
|
408 | aio_write(fh,offset,length,data,dataoffset,callback) |
|
|
409 | OutputStream fh |
|
|
410 | UV offset |
|
|
411 | IV length |
|
|
412 | SV * data |
|
|
413 | IV dataoffset |
|
|
414 | SV * callback |
|
|
415 | PROTOTYPE: $$$$$$ |
|
|
416 | CODE: |
|
|
417 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
418 | |
|
|
419 | void |
|
|
420 | aio_readahead(fh,offset,length,callback) |
|
|
421 | InputStream fh |
|
|
422 | UV offset |
|
|
423 | IV length |
|
|
424 | SV * callback |
|
|
425 | PROTOTYPE: $$$$ |
|
|
426 | CODE: |
|
|
427 | { |
|
|
428 | aio_req req; |
|
|
429 | |
985 | |
430 | if (length < 0) |
986 | if (length < 0) |
431 | croak ("length must not be negative"); |
987 | croak ("length must not be negative"); |
432 | |
988 | |
433 | Newz (0, req, 1, aio_cb); |
989 | { |
|
|
990 | dREQ; |
434 | |
991 | |
435 | if (!req) |
992 | req->type = ix; |
436 | croak ("out of memory during aio_req allocation"); |
993 | req->fh = newSVsv (fh); |
|
|
994 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
|
|
995 | : IoOFP (sv_2io (fh))); |
|
|
996 | req->offset = offset; |
|
|
997 | req->length = length; |
|
|
998 | req->data = SvREFCNT_inc (data); |
|
|
999 | req->dataptr = (char *)svptr + dataoffset; |
|
|
1000 | |
|
|
1001 | if (!SvREADONLY (data)) |
|
|
1002 | { |
|
|
1003 | SvREADONLY_on (data); |
|
|
1004 | req->data2ptr = (void *)data; |
|
|
1005 | } |
|
|
1006 | |
|
|
1007 | REQ_SEND; |
|
|
1008 | } |
|
|
1009 | } |
|
|
1010 | |
|
|
1011 | void |
|
|
1012 | aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef) |
|
|
1013 | SV * out_fh |
|
|
1014 | SV * in_fh |
|
|
1015 | UV in_offset |
|
|
1016 | UV length |
|
|
1017 | SV * callback |
|
|
1018 | PROTOTYPE: $$$$;$ |
|
|
1019 | PPCODE: |
|
|
1020 | { |
|
|
1021 | dREQ; |
|
|
1022 | |
|
|
1023 | req->type = REQ_SENDFILE; |
|
|
1024 | req->fh = newSVsv (out_fh); |
|
|
1025 | req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh))); |
|
|
1026 | req->fh2 = newSVsv (in_fh); |
|
|
1027 | req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh))); |
|
|
1028 | req->offset = in_offset; |
|
|
1029 | req->length = length; |
|
|
1030 | |
|
|
1031 | REQ_SEND; |
|
|
1032 | } |
|
|
1033 | |
|
|
1034 | void |
|
|
1035 | aio_readahead (fh,offset,length,callback=&PL_sv_undef) |
|
|
1036 | SV * fh |
|
|
1037 | UV offset |
|
|
1038 | IV length |
|
|
1039 | SV * callback |
|
|
1040 | PROTOTYPE: $$$;$ |
|
|
1041 | PPCODE: |
|
|
1042 | { |
|
|
1043 | dREQ; |
437 | |
1044 | |
438 | req->type = REQ_READAHEAD; |
1045 | req->type = REQ_READAHEAD; |
|
|
1046 | req->fh = newSVsv (fh); |
439 | req->fd = PerlIO_fileno (fh); |
1047 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
440 | req->offset = offset; |
1048 | req->offset = offset; |
441 | req->length = length; |
1049 | req->length = length; |
442 | req->callback = SvREFCNT_inc (callback); |
|
|
443 | |
1050 | |
444 | send_req (req); |
1051 | REQ_SEND; |
445 | } |
1052 | } |
446 | |
1053 | |
447 | void |
1054 | void |
448 | aio_stat(fh_or_path,callback) |
1055 | aio_stat (fh_or_path,callback=&PL_sv_undef) |
449 | SV * fh_or_path |
1056 | SV * fh_or_path |
450 | SV * callback |
1057 | SV * callback |
451 | PROTOTYPE: $$ |
|
|
452 | ALIAS: |
1058 | ALIAS: |
|
|
1059 | aio_stat = REQ_STAT |
453 | aio_lstat = 1 |
1060 | aio_lstat = REQ_LSTAT |
454 | CODE: |
1061 | PPCODE: |
455 | { |
1062 | { |
456 | aio_req req; |
1063 | dREQ; |
457 | |
|
|
458 | Newz (0, req, 1, aio_cb); |
|
|
459 | |
|
|
460 | if (!req) |
|
|
461 | croak ("out of memory during aio_req allocation"); |
|
|
462 | |
1064 | |
463 | New (0, req->statdata, 1, Stat_t); |
1065 | New (0, req->statdata, 1, Stat_t); |
464 | |
|
|
465 | if (!req->statdata) |
1066 | if (!req->statdata) |
|
|
1067 | { |
|
|
1068 | req_free (req); |
466 | croak ("out of memory during aio_req->statdata allocation"); |
1069 | croak ("out of memory during aio_req->statdata allocation"); |
|
|
1070 | } |
467 | |
1071 | |
468 | if (SvPOK (fh_or_path)) |
1072 | if (SvPOK (fh_or_path)) |
469 | { |
1073 | { |
470 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
1074 | req->type = ix; |
471 | req->data = newSVsv (fh_or_path); |
1075 | req->data = newSVsv (fh_or_path); |
472 | req->dataptr = SvPV_nolen (req->data); |
1076 | req->dataptr = SvPVbyte_nolen (req->data); |
473 | } |
1077 | } |
474 | else |
1078 | else |
475 | { |
1079 | { |
476 | req->type = REQ_FSTAT; |
1080 | req->type = REQ_FSTAT; |
|
|
1081 | req->fh = newSVsv (fh_or_path); |
477 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
1082 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
478 | } |
1083 | } |
479 | |
1084 | |
480 | req->callback = SvREFCNT_inc (callback); |
1085 | REQ_SEND; |
481 | |
|
|
482 | send_req (req); |
|
|
483 | } |
1086 | } |
484 | |
1087 | |
485 | void |
1088 | void |
486 | aio_unlink(pathname,callback) |
1089 | aio_unlink (pathname,callback=&PL_sv_undef) |
487 | SV * pathname |
1090 | SV * pathname |
488 | SV * callback |
1091 | SV * callback |
|
|
1092 | ALIAS: |
|
|
1093 | aio_unlink = REQ_UNLINK |
|
|
1094 | aio_rmdir = REQ_RMDIR |
|
|
1095 | aio_readdir = REQ_READDIR |
|
|
1096 | PPCODE: |
|
|
1097 | { |
|
|
1098 | dREQ; |
|
|
1099 | |
|
|
1100 | req->type = ix; |
|
|
1101 | req->data = newSVsv (pathname); |
|
|
1102 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
1103 | |
|
|
1104 | REQ_SEND; |
|
|
1105 | } |
|
|
1106 | |
|
|
1107 | void |
|
|
1108 | aio_link (oldpath,newpath,callback=&PL_sv_undef) |
|
|
1109 | SV * oldpath |
|
|
1110 | SV * newpath |
|
|
1111 | SV * callback |
|
|
1112 | ALIAS: |
|
|
1113 | aio_link = REQ_LINK |
|
|
1114 | aio_symlink = REQ_SYMLINK |
|
|
1115 | aio_rename = REQ_RENAME |
|
|
1116 | PPCODE: |
|
|
1117 | { |
|
|
1118 | dREQ; |
|
|
1119 | |
|
|
1120 | req->type = ix; |
|
|
1121 | req->fh = newSVsv (oldpath); |
|
|
1122 | req->data2ptr = SvPVbyte_nolen (req->fh); |
|
|
1123 | req->data = newSVsv (newpath); |
|
|
1124 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
1125 | |
|
|
1126 | REQ_SEND; |
|
|
1127 | } |
|
|
1128 | |
|
|
1129 | void |
|
|
1130 | aio_sleep (delay,callback=&PL_sv_undef) |
|
|
1131 | double delay |
|
|
1132 | SV * callback |
|
|
1133 | PPCODE: |
|
|
1134 | { |
|
|
1135 | dREQ; |
|
|
1136 | |
|
|
1137 | req->type = REQ_SLEEP; |
|
|
1138 | req->fd = delay < 0. ? 0 : delay; |
|
|
1139 | req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd); |
|
|
1140 | |
|
|
1141 | REQ_SEND; |
|
|
1142 | } |
|
|
1143 | |
|
|
1144 | void |
|
|
1145 | aio_group (callback=&PL_sv_undef) |
|
|
1146 | SV * callback |
|
|
1147 | PROTOTYPE: ;& |
|
|
1148 | PPCODE: |
|
|
1149 | { |
|
|
1150 | dREQ; |
|
|
1151 | req->type = REQ_GROUP; |
|
|
1152 | req->grp_next = req; |
|
|
1153 | req->grp_prev = req; |
|
|
1154 | |
|
|
1155 | req_send (req); |
|
|
1156 | XPUSHs (req_sv (req, AIO_GRP_KLASS)); |
|
|
1157 | } |
|
|
1158 | |
|
|
1159 | void |
|
|
1160 | flush () |
489 | PROTOTYPE: $$ |
1161 | PROTOTYPE: |
490 | CODE: |
1162 | CODE: |
491 | { |
1163 | while (nreqs) |
492 | aio_req req; |
1164 | { |
493 | |
1165 | poll_wait (); |
494 | Newz (0, req, 1, aio_cb); |
1166 | poll_cb (); |
495 | |
1167 | } |
496 | if (!req) |
1168 | |
497 | croak ("out of memory during aio_req allocation"); |
1169 | void |
498 | |
1170 | poll() |
499 | req->type = REQ_UNLINK; |
1171 | PROTOTYPE: |
500 | req->data = newSVsv (pathname); |
1172 | CODE: |
501 | req->dataptr = SvPV_nolen (req->data); |
1173 | if (nreqs) |
502 | req->callback = SvREFCNT_inc (callback); |
1174 | { |
503 | |
1175 | poll_wait (); |
504 | send_req (req); |
1176 | poll_cb (); |
505 | } |
1177 | } |
506 | |
1178 | |
507 | int |
1179 | int |
508 | poll_fileno() |
1180 | poll_fileno() |
509 | PROTOTYPE: |
1181 | PROTOTYPE: |
510 | CODE: |
1182 | CODE: |
511 | RETVAL = respipe[0]; |
1183 | RETVAL = respipe [0]; |
512 | OUTPUT: |
1184 | OUTPUT: |
513 | RETVAL |
1185 | RETVAL |
514 | |
1186 | |
515 | int |
1187 | int |
516 | poll_cb(...) |
1188 | poll_cb(...) |
517 | PROTOTYPE: |
1189 | PROTOTYPE: |
518 | CODE: |
1190 | CODE: |
519 | RETVAL = poll_cb (aTHX); |
1191 | RETVAL = poll_cb (); |
520 | OUTPUT: |
1192 | OUTPUT: |
521 | RETVAL |
1193 | RETVAL |
522 | |
1194 | |
523 | void |
1195 | void |
524 | poll_wait() |
1196 | poll_wait() |
525 | PROTOTYPE: |
1197 | PROTOTYPE: |
526 | CODE: |
1198 | CODE: |
|
|
1199 | if (nreqs) |
527 | poll_wait (); |
1200 | poll_wait (); |
528 | |
1201 | |
529 | int |
1202 | int |
530 | nreqs() |
1203 | nreqs() |
531 | PROTOTYPE: |
1204 | PROTOTYPE: |
532 | CODE: |
1205 | CODE: |
533 | RETVAL = nreqs; |
1206 | RETVAL = nreqs; |
534 | OUTPUT: |
1207 | OUTPUT: |
535 | RETVAL |
1208 | RETVAL |
536 | |
1209 | |
|
|
1210 | MODULE = IO::AIO PACKAGE = IO::AIO::REQ |
|
|
1211 | |
|
|
1212 | void |
|
|
1213 | cancel (aio_req_ornot req) |
|
|
1214 | PROTOTYPE: |
|
|
1215 | CODE: |
|
|
1216 | req_cancel (req); |
|
|
1217 | |
|
|
1218 | MODULE = IO::AIO PACKAGE = IO::AIO::GRP |
|
|
1219 | |
|
|
1220 | void |
|
|
1221 | add (aio_req grp, ...) |
|
|
1222 | PROTOTYPE: $;@ |
|
|
1223 | PPCODE: |
|
|
1224 | { |
|
|
1225 | int i; |
|
|
1226 | |
|
|
1227 | for (i = 1; i < items; ++i ) |
|
|
1228 | { |
|
|
1229 | aio_req req = SvAIO_REQ (ST (i)); |
|
|
1230 | |
|
|
1231 | req->grp_prev = grp; |
|
|
1232 | req->grp_next = grp->grp_next; |
|
|
1233 | grp->grp_next->grp_prev = req; |
|
|
1234 | grp->grp_next = req; |
|
|
1235 | |
|
|
1236 | req->grp = grp; |
|
|
1237 | |
|
|
1238 | if (GIMME_V != G_VOID) |
|
|
1239 | XPUSHs (sv_2mortal (newSVsv (ST (i)))); |
|
|
1240 | } |
|
|
1241 | } |
|
|
1242 | |