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 | |
7 | #include <sys/types.h> |
10 | #include <sys/types.h> |
8 | #include <sys/stat.h> |
11 | #include <sys/stat.h> |
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12 | |
9 | #include <unistd.h> |
13 | #include <unistd.h> |
10 | #include <fcntl.h> |
14 | #include <fcntl.h> |
11 | #include <signal.h> |
15 | #include <signal.h> |
12 | #include <sched.h> |
16 | #include <sched.h> |
13 | #include <endian.h> |
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14 | |
17 | |
15 | #include <pthread.h> |
18 | #include <pthread.h> |
16 | #include <sys/syscall.h> |
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17 | |
19 | |
18 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
20 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
19 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
21 | typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
20 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
22 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
21 | |
23 | |
22 | #if __i386 || __amd64 |
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23 | # define STACKSIZE ( 256 * sizeof (long)) |
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24 | #elif __ia64 |
24 | #if __ia64 |
25 | # define STACKSIZE (8192 * sizeof (long)) |
25 | # define STACKSIZE 65536 |
26 | #else |
26 | #else |
27 | # define STACKSIZE ( 512 * sizeof (long)) |
27 | # define STACKSIZE 4096 |
28 | #endif |
28 | #endif |
29 | |
29 | |
30 | enum { |
30 | enum { |
31 | REQ_QUIT, |
31 | REQ_QUIT, |
32 | REQ_OPEN, REQ_CLOSE, |
32 | REQ_OPEN, REQ_CLOSE, |
33 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
33 | REQ_READ, REQ_WRITE, REQ_READAHEAD, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
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36 | REQ_UNLINK, REQ_RMDIR, |
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37 | REQ_SYMLINK, |
36 | }; |
38 | }; |
37 | |
39 | |
38 | typedef struct aio_cb { |
40 | typedef struct aio_cb { |
39 | struct aio_cb *next; |
41 | struct aio_cb *volatile next; |
40 | |
42 | |
41 | int type; |
43 | int type; |
42 | |
44 | |
43 | int fd; |
45 | int fd; |
44 | off_t offset; |
46 | off_t offset; |
45 | size_t length; |
47 | size_t length; |
46 | ssize_t result; |
48 | ssize_t result; |
47 | mode_t mode; /* open */ |
49 | mode_t mode; /* open */ |
48 | int errorno; |
50 | int errorno; |
49 | SV *data, *callback; |
51 | SV *data, *callback, *fh; |
50 | void *dataptr; |
52 | void *dataptr, *data2ptr; |
51 | STRLEN dataoffset; |
53 | STRLEN dataoffset; |
52 | |
54 | |
53 | Stat_t *statdata; |
55 | Stat_t *statdata; |
54 | } aio_cb; |
56 | } aio_cb; |
55 | |
57 | |
56 | typedef aio_cb *aio_req; |
58 | typedef aio_cb *aio_req; |
57 | |
59 | |
58 | static int started; |
60 | static int started; |
59 | static int nreqs; |
61 | static volatile int nreqs; |
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62 | static int max_outstanding = 1<<30; |
60 | static int reqpipe[2], respipe[2]; |
63 | static int respipe [2]; |
61 | |
64 | |
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65 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
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66 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
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67 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
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68 | |
62 | static aio_req qs, qe; /* queue start, queue end */ |
69 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
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70 | static volatile aio_req ress, rese; /* queue start, queue end */ |
63 | |
71 | |
64 | static void *aio_proc(void *arg); |
72 | static void free_req (aio_req req) |
65 | |
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66 | static void |
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67 | start_thread (void) |
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68 | { |
73 | { |
69 | sigset_t fullsigset, oldsigset; |
74 | if (req->data) |
70 | pthread_t tid; |
75 | SvREFCNT_dec (req->data); |
71 | pthread_attr_t attr; |
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72 | |
76 | |
73 | pthread_attr_init (&attr); |
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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 | } |
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85 | |
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86 | static void |
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87 | send_reqs (void) |
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88 | { |
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89 | /* this write is atomic */ |
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90 | while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs) |
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91 | { |
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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) |
77 | if (req->fh) |
160 | croak ("out of memory during aio_req allocation"); |
78 | SvREFCNT_dec (req->fh); |
161 | |
79 | |
162 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
80 | if (req->statdata) |
163 | req->fd = fd; |
81 | Safefree (req->statdata); |
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 | |
82 | |
170 | send_req (req); |
83 | if (req->callback) |
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84 | SvREFCNT_dec (req->callback); |
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85 | |
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86 | Safefree (req); |
171 | } |
87 | } |
172 | |
88 | |
173 | static void |
89 | static void |
174 | poll_wait () |
90 | poll_wait () |
175 | { |
91 | { |
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92 | if (nreqs && !ress) |
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93 | { |
176 | fd_set rfd; |
94 | fd_set rfd; |
177 | FD_ZERO(&rfd); |
95 | FD_ZERO(&rfd); |
178 | FD_SET(respipe[0], &rfd); |
96 | FD_SET(respipe [0], &rfd); |
179 | |
97 | |
180 | select (respipe[0] + 1, &rfd, 0, 0, 0); |
98 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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99 | } |
181 | } |
100 | } |
182 | |
101 | |
183 | static int |
102 | static int |
184 | poll_cb (pTHX) |
103 | poll_cb () |
185 | { |
104 | { |
186 | dSP; |
105 | dSP; |
187 | int count = 0; |
106 | int count = 0; |
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107 | int do_croak = 0; |
188 | aio_req req; |
108 | aio_req req; |
189 | |
109 | |
190 | while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
110 | for (;;) |
191 | { |
111 | { |
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112 | pthread_mutex_lock (&reslock); |
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113 | req = ress; |
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114 | |
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115 | if (req) |
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116 | { |
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117 | ress = req->next; |
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118 | |
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119 | if (!ress) |
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120 | { |
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121 | rese = 0; |
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122 | |
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123 | /* read any signals sent by the worker threads */ |
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124 | char buf [32]; |
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125 | while (read (respipe [0], buf, 32) == 32) |
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126 | ; |
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127 | } |
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128 | } |
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129 | |
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130 | pthread_mutex_unlock (&reslock); |
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131 | |
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132 | if (!req) |
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133 | break; |
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134 | |
192 | nreqs--; |
135 | nreqs--; |
193 | |
136 | |
194 | if (req->type == REQ_QUIT) |
137 | if (req->type == REQ_QUIT) |
195 | started--; |
138 | started--; |
196 | else |
139 | else |
197 | { |
140 | { |
198 | int errorno = errno; |
141 | int errorno = errno; |
199 | errno = req->errorno; |
142 | errno = req->errorno; |
200 | |
143 | |
201 | if (req->type == REQ_READ) |
144 | if (req->type == REQ_READ) |
202 | SvCUR_set (req->data, req->dataoffset |
145 | SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0)); |
203 | + req->result > 0 ? req->result : 0); |
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204 | |
146 | |
205 | if (req->data) |
147 | 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 | { |
148 | { |
210 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
149 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
211 | PL_laststatval = req->result; |
150 | PL_laststatval = req->result; |
212 | PL_statcache = *(req->statdata); |
151 | PL_statcache = *(req->statdata); |
213 | |
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214 | Safefree (req->statdata); |
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215 | } |
152 | } |
216 | |
153 | |
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154 | ENTER; |
217 | PUSHMARK (SP); |
155 | PUSHMARK (SP); |
218 | XPUSHs (sv_2mortal (newSViv (req->result))); |
156 | XPUSHs (sv_2mortal (newSViv (req->result))); |
219 | |
157 | |
220 | if (req->type == REQ_OPEN) |
158 | if (req->type == REQ_OPEN) |
221 | { |
159 | { |
… | |
… | |
224 | |
162 | |
225 | PUTBACK; |
163 | PUTBACK; |
226 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
164 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
227 | SPAGAIN; |
165 | SPAGAIN; |
228 | |
166 | |
229 | fh = POPs; |
167 | fh = SvREFCNT_inc (POPs); |
230 | |
168 | |
231 | PUSHMARK (SP); |
169 | PUSHMARK (SP); |
232 | XPUSHs (fh); |
170 | XPUSHs (sv_2mortal (fh)); |
233 | } |
171 | } |
234 | |
172 | |
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173 | if (SvOK (req->callback)) |
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174 | { |
235 | PUTBACK; |
175 | PUTBACK; |
236 | call_sv (req->callback, G_VOID | G_EVAL); |
176 | call_sv (req->callback, G_VOID | G_EVAL); |
237 | SPAGAIN; |
177 | SPAGAIN; |
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178 | |
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179 | if (SvTRUE (ERRSV)) |
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180 | { |
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181 | free_req (req); |
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182 | croak (0); |
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183 | } |
238 | |
184 | } |
239 | if (req->callback) |
185 | |
240 | SvREFCNT_dec (req->callback); |
186 | LEAVE; |
241 | |
187 | |
242 | errno = errorno; |
188 | errno = errorno; |
243 | count++; |
189 | count++; |
244 | } |
190 | } |
245 | |
191 | |
246 | Safefree (req); |
192 | free_req (req); |
247 | } |
193 | } |
248 | |
194 | |
249 | if (qs) |
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250 | send_reqs (); |
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251 | |
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252 | return count; |
195 | return count; |
253 | } |
196 | } |
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197 | |
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198 | static void *aio_proc(void *arg); |
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199 | |
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200 | static void |
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201 | start_thread (void) |
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202 | { |
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203 | sigset_t fullsigset, oldsigset; |
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204 | pthread_t tid; |
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205 | pthread_attr_t attr; |
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206 | |
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207 | pthread_attr_init (&attr); |
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208 | pthread_attr_setstacksize (&attr, STACKSIZE); |
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209 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
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210 | |
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211 | sigfillset (&fullsigset); |
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212 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
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213 | |
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214 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
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215 | started++; |
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216 | |
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217 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
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218 | } |
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219 | |
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220 | static void |
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221 | send_req (aio_req req) |
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222 | { |
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223 | nreqs++; |
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224 | |
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225 | pthread_mutex_lock (&reqlock); |
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226 | |
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227 | req->next = 0; |
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228 | |
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229 | if (reqe) |
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230 | { |
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231 | reqe->next = req; |
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232 | reqe = req; |
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233 | } |
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234 | else |
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235 | reqe = reqs = req; |
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236 | |
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237 | pthread_cond_signal (&reqwait); |
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238 | pthread_mutex_unlock (&reqlock); |
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239 | |
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240 | if (nreqs > max_outstanding) |
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241 | for (;;) |
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242 | { |
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243 | poll_cb (); |
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244 | |
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245 | if (nreqs <= max_outstanding) |
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246 | break; |
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247 | |
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248 | poll_wait (); |
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249 | } |
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250 | } |
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251 | |
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252 | static void |
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253 | end_thread (void) |
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254 | { |
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255 | aio_req req; |
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256 | Newz (0, req, 1, aio_cb); |
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257 | req->type = REQ_QUIT; |
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258 | |
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259 | send_req (req); |
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260 | } |
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261 | |
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262 | static void min_parallel (int nthreads) |
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263 | { |
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264 | while (nthreads > started) |
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265 | start_thread (); |
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266 | } |
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267 | |
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268 | static void max_parallel (int nthreads) |
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269 | { |
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270 | int cur = started; |
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271 | |
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272 | while (cur > nthreads) |
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273 | { |
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274 | end_thread (); |
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275 | cur--; |
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276 | } |
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277 | |
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278 | while (started > nthreads) |
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279 | { |
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280 | poll_wait (); |
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281 | poll_cb (); |
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282 | } |
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283 | } |
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284 | |
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285 | static void create_pipe () |
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286 | { |
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287 | if (pipe (respipe)) |
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288 | croak ("unable to initialize result pipe"); |
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289 | |
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290 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
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291 | croak ("cannot set result pipe to nonblocking mode"); |
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292 | |
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293 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
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294 | croak ("cannot set result pipe to nonblocking mode"); |
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295 | } |
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296 | |
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297 | static void atfork_prepare (void) |
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298 | { |
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299 | for (;;) { |
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300 | |
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301 | for (;;) |
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302 | { |
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303 | poll_cb (); |
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304 | |
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305 | if (!nreqs) |
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306 | break; |
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307 | |
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308 | poll_wait (); |
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309 | } |
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310 | |
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311 | pthread_mutex_lock (&reqlock); |
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312 | |
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313 | if (!nreqs) |
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314 | break; |
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315 | |
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316 | pthread_mutex_unlock (&reqlock); |
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317 | } |
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318 | |
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319 | pthread_mutex_lock (&reslock); |
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320 | |
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321 | assert (!nreqs && !reqs && !ress); |
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322 | } |
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323 | |
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324 | static void atfork_parent (void) |
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325 | { |
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326 | pthread_mutex_unlock (&reslock); |
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327 | pthread_mutex_unlock (&reqlock); |
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328 | } |
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329 | |
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330 | static void atfork_child (void) |
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331 | { |
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332 | int restart = started; |
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333 | started = 0; |
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334 | |
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335 | atfork_parent (); |
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336 | |
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337 | min_parallel (restart); |
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338 | } |
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339 | |
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340 | /*****************************************************************************/ |
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341 | /* work around various missing functions */ |
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342 | |
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343 | #if !HAVE_PREADWRITE |
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344 | # define pread aio_pread |
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345 | # define pwrite aio_pwrite |
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346 | |
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347 | /* |
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348 | * make our pread/pwrite safe against themselves, but not against |
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|
349 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
350 | * but that's your problem, not mine. |
|
|
351 | */ |
|
|
352 | static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
|
|
353 | |
|
|
354 | static ssize_t |
|
|
355 | pread (int fd, void *buf, size_t count, off_t offset) |
|
|
356 | { |
|
|
357 | ssize_t res; |
|
|
358 | off_t ooffset; |
|
|
359 | |
|
|
360 | pthread_mutex_lock (&iolock); |
|
|
361 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
362 | lseek (fd, offset, SEEK_SET); |
|
|
363 | res = read (fd, buf, count); |
|
|
364 | lseek (fd, ooffset, SEEK_SET); |
|
|
365 | pthread_mutex_unlock (&iolock); |
|
|
366 | |
|
|
367 | return res; |
|
|
368 | } |
|
|
369 | |
|
|
370 | static ssize_t |
|
|
371 | pwrite (int fd, void *buf, size_t count, off_t offset) |
|
|
372 | { |
|
|
373 | ssize_t res; |
|
|
374 | off_t ooffset; |
|
|
375 | |
|
|
376 | pthread_mutex_lock (&iolock); |
|
|
377 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
378 | lseek (fd, offset, SEEK_SET); |
|
|
379 | res = write (fd, buf, count); |
|
|
380 | lseek (fd, offset, SEEK_SET); |
|
|
381 | pthread_mutex_unlock (&iolock); |
|
|
382 | |
|
|
383 | return res; |
|
|
384 | } |
|
|
385 | #endif |
|
|
386 | |
|
|
387 | #if !HAVE_FDATASYNC |
|
|
388 | # define fdatasync fsync |
|
|
389 | #endif |
|
|
390 | |
|
|
391 | #if !HAVE_READAHEAD |
|
|
392 | # define readahead aio_readahead |
|
|
393 | |
|
|
394 | static char readahead_buf[4096]; |
|
|
395 | |
|
|
396 | static ssize_t |
|
|
397 | readahead (int fd, off_t offset, size_t count) |
|
|
398 | { |
|
|
399 | while (count > 0) |
|
|
400 | { |
|
|
401 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
|
|
402 | |
|
|
403 | pread (fd, readahead_buf, len, offset); |
|
|
404 | offset += len; |
|
|
405 | count -= len; |
|
|
406 | } |
|
|
407 | |
|
|
408 | errno = 0; |
|
|
409 | } |
|
|
410 | #endif |
|
|
411 | |
|
|
412 | /*****************************************************************************/ |
254 | |
413 | |
255 | static void * |
414 | static void * |
256 | aio_proc (void *thr_arg) |
415 | aio_proc (void *thr_arg) |
257 | { |
416 | { |
258 | aio_req req; |
417 | aio_req req; |
|
|
418 | int type; |
259 | |
419 | |
260 | /* then loop */ |
420 | do |
261 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
|
|
262 | { |
421 | { |
|
|
422 | pthread_mutex_lock (&reqlock); |
|
|
423 | |
|
|
424 | for (;;) |
|
|
425 | { |
|
|
426 | req = reqs; |
|
|
427 | |
|
|
428 | if (reqs) |
|
|
429 | { |
|
|
430 | reqs = reqs->next; |
|
|
431 | if (!reqs) reqe = 0; |
|
|
432 | } |
|
|
433 | |
|
|
434 | if (req) |
|
|
435 | break; |
|
|
436 | |
|
|
437 | pthread_cond_wait (&reqwait, &reqlock); |
|
|
438 | } |
|
|
439 | |
|
|
440 | pthread_mutex_unlock (&reqlock); |
|
|
441 | |
263 | errno = 0; /* strictly unnecessary */ |
442 | errno = 0; /* strictly unnecessary */ |
264 | |
443 | |
|
|
444 | type = req->type; |
|
|
445 | |
265 | switch (req->type) |
446 | switch (type) |
266 | { |
447 | { |
267 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
448 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
268 | case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; |
449 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
269 | #if SYS_readahead |
450 | |
270 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
451 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
271 | #else |
|
|
272 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
|
|
273 | #endif |
|
|
274 | |
452 | |
275 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
453 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
276 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
454 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
277 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
455 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
278 | |
456 | |
279 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
457 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
280 | case REQ_CLOSE: req->result = close (req->fd); break; |
458 | case REQ_CLOSE: req->result = close (req->fd); break; |
281 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
459 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
|
|
460 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
461 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
282 | |
462 | |
|
|
463 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
283 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
464 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
284 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
285 | |
465 | |
286 | case REQ_QUIT: |
466 | case REQ_QUIT: |
287 | write (respipe[1], (void *)&req, sizeof (req)); |
467 | break; |
288 | return 0; |
|
|
289 | |
468 | |
290 | default: |
469 | default: |
291 | req->result = ENOSYS; |
470 | req->result = ENOSYS; |
292 | break; |
471 | break; |
293 | } |
472 | } |
294 | |
473 | |
295 | req->errorno = errno; |
474 | req->errorno = errno; |
296 | write (respipe[1], (void *)&req, sizeof (req)); |
475 | |
|
|
476 | pthread_mutex_lock (&reslock); |
|
|
477 | |
|
|
478 | req->next = 0; |
|
|
479 | |
|
|
480 | if (rese) |
|
|
481 | { |
|
|
482 | rese->next = req; |
|
|
483 | rese = req; |
|
|
484 | } |
|
|
485 | else |
|
|
486 | { |
|
|
487 | rese = ress = req; |
|
|
488 | |
|
|
489 | /* write a dummy byte to the pipe so fh becomes ready */ |
|
|
490 | write (respipe [1], &respipe, 1); |
|
|
491 | } |
|
|
492 | |
|
|
493 | pthread_mutex_unlock (&reslock); |
297 | } |
494 | } |
|
|
495 | while (type != REQ_QUIT); |
298 | |
496 | |
299 | return 0; |
497 | return 0; |
300 | } |
498 | } |
301 | |
499 | |
|
|
500 | #define dREQ \ |
|
|
501 | aio_req req; \ |
|
|
502 | \ |
|
|
503 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
504 | croak ("clalback must be undef or of reference type"); \ |
|
|
505 | \ |
|
|
506 | Newz (0, req, 1, aio_cb); \ |
|
|
507 | if (!req) \ |
|
|
508 | croak ("out of memory during aio_req allocation"); \ |
|
|
509 | \ |
|
|
510 | req->callback = newSVsv (callback); |
|
|
511 | |
302 | MODULE = IO::AIO PACKAGE = IO::AIO |
512 | MODULE = IO::AIO PACKAGE = IO::AIO |
303 | |
513 | |
|
|
514 | PROTOTYPES: ENABLE |
|
|
515 | |
304 | BOOT: |
516 | BOOT: |
305 | { |
517 | { |
306 | if (pipe (reqpipe) || pipe (respipe)) |
518 | create_pipe (); |
307 | croak ("unable to initialize request or result pipe"); |
519 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
308 | |
|
|
309 | if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) |
|
|
310 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
311 | |
|
|
312 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
|
|
313 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
314 | } |
520 | } |
315 | |
521 | |
316 | void |
522 | void |
317 | min_parallel(nthreads) |
523 | min_parallel(nthreads) |
318 | int nthreads |
524 | int nthreads |
319 | PROTOTYPE: $ |
525 | PROTOTYPE: $ |
320 | CODE: |
|
|
321 | while (nthreads > started) |
|
|
322 | start_thread (); |
|
|
323 | |
526 | |
324 | void |
527 | void |
325 | max_parallel(nthreads) |
528 | max_parallel(nthreads) |
326 | int nthreads |
529 | int nthreads |
327 | PROTOTYPE: $ |
530 | PROTOTYPE: $ |
|
|
531 | |
|
|
532 | int |
|
|
533 | max_outstanding(nreqs) |
|
|
534 | int nreqs |
|
|
535 | PROTOTYPE: $ |
328 | CODE: |
536 | CODE: |
329 | { |
537 | RETVAL = max_outstanding; |
330 | int cur = started; |
538 | max_outstanding = nreqs; |
331 | while (cur > nthreads) |
|
|
332 | { |
|
|
333 | end_thread (); |
|
|
334 | cur--; |
|
|
335 | } |
|
|
336 | |
539 | |
337 | while (started > nthreads) |
|
|
338 | { |
|
|
339 | poll_wait (); |
|
|
340 | poll_cb (aTHX); |
|
|
341 | } |
|
|
342 | } |
|
|
343 | |
|
|
344 | void |
540 | void |
345 | aio_open(pathname,flags,mode,callback) |
541 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
346 | SV * pathname |
542 | SV * pathname |
347 | int flags |
543 | int flags |
348 | int mode |
544 | int mode |
349 | SV * callback |
545 | SV * callback |
350 | PROTOTYPE: $$$$ |
546 | PROTOTYPE: $$$;$ |
351 | CODE: |
547 | CODE: |
352 | { |
548 | { |
353 | aio_req req; |
549 | dREQ; |
354 | |
|
|
355 | Newz (0, req, 1, aio_cb); |
|
|
356 | |
|
|
357 | if (!req) |
|
|
358 | croak ("out of memory during aio_req allocation"); |
|
|
359 | |
550 | |
360 | req->type = REQ_OPEN; |
551 | req->type = REQ_OPEN; |
361 | req->data = newSVsv (pathname); |
552 | req->data = newSVsv (pathname); |
362 | req->dataptr = SvPV_nolen (req->data); |
553 | req->dataptr = SvPVbyte_nolen (req->data); |
363 | req->fd = flags; |
554 | req->fd = flags; |
364 | req->mode = mode; |
555 | req->mode = mode; |
365 | req->callback = SvREFCNT_inc (callback); |
|
|
366 | |
556 | |
367 | send_req (req); |
557 | send_req (req); |
368 | } |
558 | } |
369 | |
559 | |
370 | void |
560 | void |
371 | aio_close(fh,callback) |
561 | aio_close(fh,callback=&PL_sv_undef) |
372 | InputStream fh |
562 | SV * fh |
373 | SV * callback |
563 | SV * callback |
374 | PROTOTYPE: $$ |
564 | PROTOTYPE: $;$ |
375 | ALIAS: |
565 | ALIAS: |
376 | aio_close = REQ_CLOSE |
566 | aio_close = REQ_CLOSE |
377 | aio_fsync = REQ_FSYNC |
567 | aio_fsync = REQ_FSYNC |
378 | aio_fdatasync = REQ_FDATASYNC |
568 | aio_fdatasync = REQ_FDATASYNC |
379 | CODE: |
569 | CODE: |
380 | { |
570 | { |
|
|
571 | dREQ; |
|
|
572 | |
|
|
573 | req->type = ix; |
|
|
574 | req->fh = newSVsv (fh); |
|
|
575 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
576 | |
|
|
577 | send_req (req); |
|
|
578 | } |
|
|
579 | |
|
|
580 | void |
|
|
581 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
|
|
582 | SV * fh |
|
|
583 | UV offset |
|
|
584 | IV length |
|
|
585 | SV * data |
|
|
586 | IV dataoffset |
|
|
587 | SV * callback |
|
|
588 | ALIAS: |
|
|
589 | aio_read = REQ_READ |
|
|
590 | aio_write = REQ_WRITE |
|
|
591 | PROTOTYPE: $$$$$;$ |
|
|
592 | CODE: |
|
|
593 | { |
381 | aio_req req; |
594 | aio_req req; |
|
|
595 | STRLEN svlen; |
|
|
596 | char *svptr = SvPVbyte (data, svlen); |
382 | |
597 | |
383 | Newz (0, req, 1, aio_cb); |
598 | SvUPGRADE (data, SVt_PV); |
|
|
599 | SvPOK_on (data); |
384 | |
600 | |
385 | if (!req) |
601 | if (dataoffset < 0) |
386 | croak ("out of memory during aio_req allocation"); |
602 | dataoffset += svlen; |
387 | |
603 | |
388 | req->type = ix; |
604 | if (dataoffset < 0 || dataoffset > svlen) |
389 | req->fd = PerlIO_fileno (fh); |
605 | croak ("data offset outside of string"); |
390 | req->callback = SvREFCNT_inc (callback); |
|
|
391 | |
606 | |
392 | send_req (req); |
607 | if (ix == REQ_WRITE) |
393 | } |
608 | { |
394 | |
609 | /* write: check length and adjust. */ |
395 | void |
610 | if (length < 0 || length + dataoffset > svlen) |
396 | aio_read(fh,offset,length,data,dataoffset,callback) |
611 | length = svlen - dataoffset; |
397 | InputStream fh |
612 | } |
398 | UV offset |
613 | else |
399 | IV length |
614 | { |
400 | SV * data |
615 | /* read: grow scalar as necessary */ |
401 | IV dataoffset |
616 | svptr = SvGROW (data, length + dataoffset); |
402 | SV * callback |
617 | } |
403 | PROTOTYPE: $$$$$$ |
|
|
404 | CODE: |
|
|
405 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
406 | |
|
|
407 | void |
|
|
408 | aio_write(fh,offset,length,data,dataoffset,callback) |
|
|
409 | OutputStream fh |
|
|
410 | UV offset |
|
|
411 | IV length |
|
|
412 | SV * data |
|
|
413 | IV dataoffset |
|
|
414 | SV * callback |
|
|
415 | PROTOTYPE: $$$$$$ |
|
|
416 | CODE: |
|
|
417 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
418 | |
|
|
419 | void |
|
|
420 | aio_readahead(fh,offset,length,callback) |
|
|
421 | InputStream fh |
|
|
422 | UV offset |
|
|
423 | IV length |
|
|
424 | SV * callback |
|
|
425 | PROTOTYPE: $$$$ |
|
|
426 | CODE: |
|
|
427 | { |
|
|
428 | aio_req req; |
|
|
429 | |
618 | |
430 | if (length < 0) |
619 | if (length < 0) |
431 | croak ("length must not be negative"); |
620 | croak ("length must not be negative"); |
432 | |
621 | |
433 | Newz (0, req, 1, aio_cb); |
622 | { |
|
|
623 | dREQ; |
434 | |
624 | |
435 | if (!req) |
625 | req->type = ix; |
436 | croak ("out of memory during aio_req allocation"); |
626 | req->fh = newSVsv (fh); |
|
|
627 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
|
|
628 | : IoOFP (sv_2io (fh))); |
|
|
629 | req->offset = offset; |
|
|
630 | req->length = length; |
|
|
631 | req->data = SvREFCNT_inc (data); |
|
|
632 | req->dataptr = (char *)svptr + dataoffset; |
|
|
633 | |
|
|
634 | send_req (req); |
|
|
635 | } |
|
|
636 | } |
|
|
637 | |
|
|
638 | void |
|
|
639 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
|
|
640 | SV * fh |
|
|
641 | UV offset |
|
|
642 | IV length |
|
|
643 | SV * callback |
|
|
644 | PROTOTYPE: $$$;$ |
|
|
645 | CODE: |
|
|
646 | { |
|
|
647 | dREQ; |
437 | |
648 | |
438 | req->type = REQ_READAHEAD; |
649 | req->type = REQ_READAHEAD; |
|
|
650 | req->fh = newSVsv (fh); |
439 | req->fd = PerlIO_fileno (fh); |
651 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
440 | req->offset = offset; |
652 | req->offset = offset; |
441 | req->length = length; |
653 | req->length = length; |
442 | req->callback = SvREFCNT_inc (callback); |
|
|
443 | |
654 | |
444 | send_req (req); |
655 | send_req (req); |
445 | } |
656 | } |
446 | |
657 | |
447 | void |
658 | void |
448 | aio_stat(fh_or_path,callback) |
659 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
449 | SV * fh_or_path |
660 | SV * fh_or_path |
450 | SV * callback |
661 | SV * callback |
451 | PROTOTYPE: $$ |
|
|
452 | ALIAS: |
662 | ALIAS: |
|
|
663 | aio_stat = REQ_STAT |
453 | aio_lstat = 1 |
664 | aio_lstat = REQ_LSTAT |
454 | CODE: |
665 | CODE: |
455 | { |
666 | { |
456 | aio_req req; |
667 | dREQ; |
457 | |
|
|
458 | Newz (0, req, 1, aio_cb); |
|
|
459 | |
|
|
460 | if (!req) |
|
|
461 | croak ("out of memory during aio_req allocation"); |
|
|
462 | |
668 | |
463 | New (0, req->statdata, 1, Stat_t); |
669 | New (0, req->statdata, 1, Stat_t); |
464 | |
|
|
465 | if (!req->statdata) |
670 | if (!req->statdata) |
|
|
671 | { |
|
|
672 | free_req (req); |
466 | croak ("out of memory during aio_req->statdata allocation"); |
673 | croak ("out of memory during aio_req->statdata allocation"); |
|
|
674 | } |
467 | |
675 | |
468 | if (SvPOK (fh_or_path)) |
676 | if (SvPOK (fh_or_path)) |
469 | { |
677 | { |
470 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
678 | req->type = ix; |
471 | req->data = newSVsv (fh_or_path); |
679 | req->data = newSVsv (fh_or_path); |
472 | req->dataptr = SvPV_nolen (req->data); |
680 | req->dataptr = SvPVbyte_nolen (req->data); |
473 | } |
681 | } |
474 | else |
682 | else |
475 | { |
683 | { |
476 | req->type = REQ_FSTAT; |
684 | req->type = REQ_FSTAT; |
|
|
685 | req->fh = newSVsv (fh_or_path); |
477 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
686 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
478 | } |
687 | } |
479 | |
688 | |
480 | req->callback = SvREFCNT_inc (callback); |
|
|
481 | |
|
|
482 | send_req (req); |
689 | send_req (req); |
483 | } |
690 | } |
484 | |
691 | |
485 | void |
692 | void |
486 | aio_unlink(pathname,callback) |
693 | aio_unlink(pathname,callback=&PL_sv_undef) |
487 | SV * pathname |
694 | SV * pathname |
488 | SV * callback |
695 | SV * callback |
489 | PROTOTYPE: $$ |
696 | ALIAS: |
|
|
697 | aio_unlink = REQ_UNLINK |
|
|
698 | aio_rmdir = REQ_RMDIR |
490 | CODE: |
699 | CODE: |
491 | { |
700 | { |
492 | aio_req req; |
701 | dREQ; |
493 | |
702 | |
494 | Newz (0, req, 1, aio_cb); |
703 | req->type = ix; |
495 | |
|
|
496 | if (!req) |
|
|
497 | croak ("out of memory during aio_req allocation"); |
|
|
498 | |
|
|
499 | req->type = REQ_UNLINK; |
|
|
500 | req->data = newSVsv (pathname); |
704 | req->data = newSVsv (pathname); |
501 | req->dataptr = SvPV_nolen (req->data); |
705 | req->dataptr = SvPVbyte_nolen (req->data); |
502 | req->callback = SvREFCNT_inc (callback); |
|
|
503 | |
706 | |
504 | send_req (req); |
707 | send_req (req); |
505 | } |
708 | } |
|
|
709 | |
|
|
710 | void |
|
|
711 | aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
|
|
712 | SV * oldpath |
|
|
713 | SV * newpath |
|
|
714 | SV * callback |
|
|
715 | CODE: |
|
|
716 | { |
|
|
717 | dREQ; |
|
|
718 | |
|
|
719 | req->type = REQ_SYMLINK; |
|
|
720 | req->fh = newSVsv (oldpath); |
|
|
721 | req->data2ptr = SvPVbyte_nolen (req->fh); |
|
|
722 | req->data = newSVsv (newpath); |
|
|
723 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
724 | |
|
|
725 | send_req (req); |
|
|
726 | } |
|
|
727 | |
|
|
728 | void |
|
|
729 | flush() |
|
|
730 | PROTOTYPE: |
|
|
731 | CODE: |
|
|
732 | while (nreqs) |
|
|
733 | { |
|
|
734 | poll_wait (); |
|
|
735 | poll_cb (); |
|
|
736 | } |
|
|
737 | |
|
|
738 | void |
|
|
739 | poll() |
|
|
740 | PROTOTYPE: |
|
|
741 | CODE: |
|
|
742 | if (nreqs) |
|
|
743 | { |
|
|
744 | poll_wait (); |
|
|
745 | poll_cb (); |
|
|
746 | } |
506 | |
747 | |
507 | int |
748 | int |
508 | poll_fileno() |
749 | poll_fileno() |
509 | PROTOTYPE: |
750 | PROTOTYPE: |
510 | CODE: |
751 | CODE: |
511 | RETVAL = respipe[0]; |
752 | RETVAL = respipe [0]; |
512 | OUTPUT: |
753 | OUTPUT: |
513 | RETVAL |
754 | RETVAL |
514 | |
755 | |
515 | int |
756 | int |
516 | poll_cb(...) |
757 | poll_cb(...) |
517 | PROTOTYPE: |
758 | PROTOTYPE: |
518 | CODE: |
759 | CODE: |
519 | RETVAL = poll_cb (aTHX); |
760 | RETVAL = poll_cb (); |
520 | OUTPUT: |
761 | OUTPUT: |
521 | RETVAL |
762 | RETVAL |
522 | |
763 | |
523 | void |
764 | void |
524 | poll_wait() |
765 | poll_wait() |
525 | PROTOTYPE: |
766 | PROTOTYPE: |
526 | CODE: |
767 | CODE: |
|
|
768 | if (nreqs) |
527 | poll_wait (); |
769 | poll_wait (); |
528 | |
770 | |
529 | int |
771 | int |
530 | nreqs() |
772 | nreqs() |
531 | PROTOTYPE: |
773 | PROTOTYPE: |
532 | CODE: |
774 | CODE: |