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, wanted; |
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 | /* read any signals sent by the worker threads */ |
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122 | char buf [32]; |
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123 | while (read (respipe [0], buf, 32) == 32) |
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124 | ; |
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125 | |
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126 | rese = 0; |
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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 | |
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147 | if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE)) |
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148 | SvREADONLY_off (req->data); |
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149 | |
205 | if (req->data) |
150 | 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 | { |
151 | { |
210 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
152 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
211 | PL_laststatval = req->result; |
153 | PL_laststatval = req->result; |
212 | PL_statcache = *(req->statdata); |
154 | PL_statcache = *(req->statdata); |
213 | |
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214 | Safefree (req->statdata); |
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215 | } |
155 | } |
216 | |
156 | |
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157 | ENTER; |
217 | PUSHMARK (SP); |
158 | PUSHMARK (SP); |
218 | XPUSHs (sv_2mortal (newSViv (req->result))); |
159 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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160 | |
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161 | if (req->type == REQ_OPEN) |
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162 | { |
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163 | /* convert fd to fh */ |
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164 | SV *fh; |
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165 | |
219 | PUTBACK; |
166 | PUTBACK; |
220 | call_sv (req->callback, G_VOID); |
167 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
221 | SPAGAIN; |
168 | SPAGAIN; |
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169 | |
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170 | fh = SvREFCNT_inc (POPs); |
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171 | |
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172 | PUSHMARK (SP); |
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173 | XPUSHs (sv_2mortal (fh)); |
222 | |
174 | } |
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175 | |
223 | if (req->callback) |
176 | if (SvOK (req->callback)) |
224 | SvREFCNT_dec (req->callback); |
177 | { |
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178 | PUTBACK; |
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179 | call_sv (req->callback, G_VOID | G_EVAL); |
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180 | SPAGAIN; |
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181 | |
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182 | if (SvTRUE (ERRSV)) |
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183 | { |
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184 | free_req (req); |
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185 | croak (0); |
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186 | } |
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187 | } |
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188 | |
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189 | LEAVE; |
225 | |
190 | |
226 | errno = errorno; |
191 | errno = errorno; |
227 | count++; |
192 | count++; |
228 | } |
193 | } |
229 | |
194 | |
230 | Safefree (req); |
195 | free_req (req); |
231 | } |
196 | } |
232 | |
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233 | if (qs) |
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234 | send_reqs (); |
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235 | |
197 | |
236 | return count; |
198 | return count; |
237 | } |
199 | } |
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200 | |
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201 | static void *aio_proc(void *arg); |
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202 | |
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203 | static void |
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204 | start_thread (void) |
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205 | { |
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206 | sigset_t fullsigset, oldsigset; |
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207 | pthread_t tid; |
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208 | pthread_attr_t attr; |
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209 | |
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210 | pthread_attr_init (&attr); |
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211 | pthread_attr_setstacksize (&attr, STACKSIZE); |
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212 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
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213 | |
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214 | sigfillset (&fullsigset); |
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215 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
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216 | |
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217 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
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218 | started++; |
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219 | |
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220 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
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221 | } |
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222 | |
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223 | static void |
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224 | send_req (aio_req req) |
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225 | { |
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226 | while (started < wanted && nreqs >= started) |
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227 | start_thread (); |
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228 | |
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229 | nreqs++; |
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230 | |
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231 | pthread_mutex_lock (&reqlock); |
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232 | |
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233 | req->next = 0; |
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234 | |
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235 | if (reqe) |
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236 | { |
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237 | reqe->next = req; |
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238 | reqe = req; |
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239 | } |
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240 | else |
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241 | reqe = reqs = req; |
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242 | |
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243 | pthread_cond_signal (&reqwait); |
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244 | pthread_mutex_unlock (&reqlock); |
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245 | |
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246 | if (nreqs > max_outstanding) |
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247 | for (;;) |
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248 | { |
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249 | poll_cb (); |
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250 | |
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251 | if (nreqs <= max_outstanding) |
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252 | break; |
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253 | |
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254 | poll_wait (); |
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255 | } |
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256 | } |
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257 | |
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258 | static void |
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259 | end_thread (void) |
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260 | { |
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261 | aio_req req; |
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262 | Newz (0, req, 1, aio_cb); |
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263 | req->type = REQ_QUIT; |
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264 | |
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265 | send_req (req); |
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266 | } |
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267 | |
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268 | static void min_parallel (int nthreads) |
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269 | { |
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270 | if (wanted < nthreads) |
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271 | wanted = nthreads; |
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272 | } |
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273 | |
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274 | static void max_parallel (int nthreads) |
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275 | { |
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276 | int cur = started; |
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277 | |
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278 | if (wanted > nthreads) |
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279 | wanted = nthreads; |
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280 | |
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281 | while (cur > wanted) |
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282 | { |
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283 | end_thread (); |
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284 | cur--; |
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285 | } |
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286 | |
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287 | while (started > wanted) |
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288 | { |
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289 | poll_wait (); |
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290 | poll_cb (); |
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291 | } |
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292 | } |
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293 | |
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294 | static void create_pipe () |
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295 | { |
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296 | if (pipe (respipe)) |
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297 | croak ("unable to initialize result pipe"); |
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298 | |
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299 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
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300 | croak ("cannot set result pipe to nonblocking mode"); |
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301 | |
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302 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
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303 | croak ("cannot set result pipe to nonblocking mode"); |
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304 | } |
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305 | |
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306 | static void atfork_prepare (void) |
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307 | { |
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308 | pthread_mutex_lock (&reqlock); |
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309 | pthread_mutex_lock (&reslock); |
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310 | } |
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311 | |
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312 | static void atfork_parent (void) |
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313 | { |
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314 | pthread_mutex_unlock (&reslock); |
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315 | pthread_mutex_unlock (&reqlock); |
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316 | } |
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317 | |
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318 | static void atfork_child (void) |
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319 | { |
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320 | aio_req prv; |
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321 | |
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322 | started = 0; |
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323 | |
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324 | while (reqs) |
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325 | { |
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326 | prv = reqs; |
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327 | reqs = prv->next; |
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328 | free_req (prv); |
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329 | } |
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330 | |
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331 | reqs = reqe = 0; |
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332 | |
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333 | while (ress) |
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334 | { |
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335 | prv = ress; |
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336 | ress = prv->next; |
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337 | free_req (prv); |
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338 | } |
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339 | |
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340 | ress = rese = 0; |
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341 | |
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342 | close (respipe [0]); |
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343 | close (respipe [1]); |
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344 | create_pipe (); |
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345 | |
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346 | atfork_parent (); |
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347 | } |
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348 | |
|
|
349 | /*****************************************************************************/ |
|
|
350 | /* work around various missing functions */ |
|
|
351 | |
|
|
352 | #if !HAVE_PREADWRITE |
|
|
353 | # define pread aio_pread |
|
|
354 | # define pwrite aio_pwrite |
|
|
355 | |
|
|
356 | /* |
|
|
357 | * make our pread/pwrite safe against themselves, but not against |
|
|
358 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
359 | * but that's your problem, not mine. |
|
|
360 | */ |
|
|
361 | static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER; |
|
|
362 | |
|
|
363 | static ssize_t |
|
|
364 | pread (int fd, void *buf, size_t count, off_t offset) |
|
|
365 | { |
|
|
366 | ssize_t res; |
|
|
367 | off_t ooffset; |
|
|
368 | |
|
|
369 | pthread_mutex_lock (&iolock); |
|
|
370 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
371 | lseek (fd, offset, SEEK_SET); |
|
|
372 | res = read (fd, buf, count); |
|
|
373 | lseek (fd, ooffset, SEEK_SET); |
|
|
374 | pthread_mutex_unlock (&iolock); |
|
|
375 | |
|
|
376 | return res; |
|
|
377 | } |
|
|
378 | |
|
|
379 | static ssize_t |
|
|
380 | pwrite (int fd, void *buf, size_t count, off_t offset) |
|
|
381 | { |
|
|
382 | ssize_t res; |
|
|
383 | off_t ooffset; |
|
|
384 | |
|
|
385 | pthread_mutex_lock (&iolock); |
|
|
386 | ooffset = lseek (fd, 0, SEEK_CUR); |
|
|
387 | lseek (fd, offset, SEEK_SET); |
|
|
388 | res = write (fd, buf, count); |
|
|
389 | lseek (fd, offset, SEEK_SET); |
|
|
390 | pthread_mutex_unlock (&iolock); |
|
|
391 | |
|
|
392 | return res; |
|
|
393 | } |
|
|
394 | #endif |
|
|
395 | |
|
|
396 | #if !HAVE_FDATASYNC |
|
|
397 | # define fdatasync fsync |
|
|
398 | #endif |
|
|
399 | |
|
|
400 | #if !HAVE_READAHEAD |
|
|
401 | # define readahead aio_readahead |
|
|
402 | |
|
|
403 | static char readahead_buf[4096]; |
|
|
404 | |
|
|
405 | static ssize_t |
|
|
406 | readahead (int fd, off_t offset, size_t count) |
|
|
407 | { |
|
|
408 | while (count > 0) |
|
|
409 | { |
|
|
410 | size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf); |
|
|
411 | |
|
|
412 | pread (fd, readahead_buf, len, offset); |
|
|
413 | offset += len; |
|
|
414 | count -= len; |
|
|
415 | } |
|
|
416 | |
|
|
417 | errno = 0; |
|
|
418 | } |
|
|
419 | #endif |
|
|
420 | |
|
|
421 | /*****************************************************************************/ |
238 | |
422 | |
239 | static void * |
423 | static void * |
240 | aio_proc (void *thr_arg) |
424 | aio_proc (void *thr_arg) |
241 | { |
425 | { |
242 | aio_req req; |
426 | aio_req req; |
|
|
427 | int type; |
243 | |
428 | |
244 | /* then loop */ |
429 | do |
245 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
430 | { |
|
|
431 | pthread_mutex_lock (&reqlock); |
|
|
432 | |
|
|
433 | for (;;) |
|
|
434 | { |
|
|
435 | req = reqs; |
|
|
436 | |
|
|
437 | if (reqs) |
|
|
438 | { |
|
|
439 | reqs = reqs->next; |
|
|
440 | if (!reqs) reqe = 0; |
|
|
441 | } |
|
|
442 | |
|
|
443 | if (req) |
|
|
444 | break; |
|
|
445 | |
|
|
446 | pthread_cond_wait (&reqwait, &reqlock); |
|
|
447 | } |
|
|
448 | |
|
|
449 | pthread_mutex_unlock (&reqlock); |
246 | { |
450 | |
247 | errno = 0; /* strictly unnecessary */ |
451 | errno = 0; /* strictly unnecessary */ |
248 | |
452 | |
|
|
453 | type = req->type; |
|
|
454 | |
249 | switch (req->type) |
455 | switch (type) |
250 | { |
456 | { |
251 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
457 | case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break; |
252 | case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break; |
458 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
253 | #if SYS_readahead |
459 | |
254 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
460 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
255 | #else |
|
|
256 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
|
|
257 | #endif |
|
|
258 | |
461 | |
259 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
462 | case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break; |
260 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
463 | case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break; |
261 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
464 | case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break; |
262 | |
465 | |
263 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
466 | case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break; |
264 | case REQ_CLOSE: req->result = close (req->fd); break; |
467 | case REQ_CLOSE: req->result = close (req->fd); break; |
265 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
468 | case REQ_UNLINK: req->result = unlink (req->dataptr); break; |
|
|
469 | case REQ_RMDIR: req->result = rmdir (req->dataptr); break; |
|
|
470 | case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break; |
266 | |
471 | |
|
|
472 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
267 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
473 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
268 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
|
|
269 | |
474 | |
270 | case REQ_QUIT: |
475 | case REQ_QUIT: |
271 | write (respipe[1], (void *)&req, sizeof (req)); |
476 | break; |
272 | return 0; |
|
|
273 | |
477 | |
274 | default: |
478 | default: |
275 | req->result = ENOSYS; |
479 | req->result = ENOSYS; |
276 | break; |
480 | break; |
277 | } |
481 | } |
278 | |
482 | |
279 | req->errorno = errno; |
483 | req->errorno = errno; |
280 | write (respipe[1], (void *)&req, sizeof (req)); |
484 | |
|
|
485 | pthread_mutex_lock (&reslock); |
|
|
486 | |
|
|
487 | req->next = 0; |
|
|
488 | |
|
|
489 | if (rese) |
|
|
490 | { |
|
|
491 | rese->next = req; |
|
|
492 | rese = req; |
|
|
493 | } |
|
|
494 | else |
|
|
495 | { |
|
|
496 | rese = ress = req; |
|
|
497 | |
|
|
498 | /* write a dummy byte to the pipe so fh becomes ready */ |
|
|
499 | write (respipe [1], &respipe, 1); |
|
|
500 | } |
|
|
501 | |
|
|
502 | pthread_mutex_unlock (&reslock); |
281 | } |
503 | } |
|
|
504 | while (type != REQ_QUIT); |
282 | |
505 | |
283 | return 0; |
506 | return 0; |
284 | } |
507 | } |
285 | |
508 | |
|
|
509 | #define dREQ \ |
|
|
510 | aio_req req; \ |
|
|
511 | \ |
|
|
512 | if (SvOK (callback) && !SvROK (callback)) \ |
|
|
513 | croak ("clalback must be undef or of reference type"); \ |
|
|
514 | \ |
|
|
515 | Newz (0, req, 1, aio_cb); \ |
|
|
516 | if (!req) \ |
|
|
517 | croak ("out of memory during aio_req allocation"); \ |
|
|
518 | \ |
|
|
519 | req->callback = newSVsv (callback); |
|
|
520 | |
286 | MODULE = IO::AIO PACKAGE = IO::AIO |
521 | MODULE = IO::AIO PACKAGE = IO::AIO |
287 | |
522 | |
|
|
523 | PROTOTYPES: ENABLE |
|
|
524 | |
288 | BOOT: |
525 | BOOT: |
289 | { |
526 | { |
290 | if (pipe (reqpipe) || pipe (respipe)) |
527 | create_pipe (); |
291 | croak ("unable to initialize request or result pipe"); |
528 | pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
292 | |
|
|
293 | if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) |
|
|
294 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
295 | |
|
|
296 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
|
|
297 | croak ("cannot set result pipe to nonblocking mode"); |
|
|
298 | } |
529 | } |
299 | |
530 | |
300 | void |
531 | void |
301 | min_parallel(nthreads) |
532 | min_parallel(nthreads) |
302 | int nthreads |
533 | int nthreads |
303 | PROTOTYPE: $ |
534 | PROTOTYPE: $ |
304 | CODE: |
|
|
305 | while (nthreads > started) |
|
|
306 | start_thread (); |
|
|
307 | |
535 | |
308 | void |
536 | void |
309 | max_parallel(nthreads) |
537 | max_parallel(nthreads) |
310 | int nthreads |
538 | int nthreads |
311 | PROTOTYPE: $ |
539 | PROTOTYPE: $ |
|
|
540 | |
|
|
541 | int |
|
|
542 | max_outstanding(nreqs) |
|
|
543 | int nreqs |
|
|
544 | PROTOTYPE: $ |
312 | CODE: |
545 | CODE: |
313 | { |
546 | RETVAL = max_outstanding; |
314 | int cur = started; |
547 | max_outstanding = nreqs; |
315 | while (cur > nthreads) |
|
|
316 | { |
|
|
317 | end_thread (); |
|
|
318 | cur--; |
|
|
319 | } |
|
|
320 | |
548 | |
321 | while (started > nthreads) |
|
|
322 | { |
|
|
323 | poll_wait (); |
|
|
324 | poll_cb (aTHX); |
|
|
325 | } |
|
|
326 | } |
|
|
327 | |
|
|
328 | void |
549 | void |
329 | aio_open(pathname,flags,mode,callback) |
550 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
330 | SV * pathname |
551 | SV * pathname |
331 | int flags |
552 | int flags |
332 | int mode |
553 | int mode |
333 | SV * callback |
554 | SV * callback |
334 | PROTOTYPE: $$$$ |
555 | PROTOTYPE: $$$;$ |
335 | CODE: |
556 | CODE: |
336 | { |
557 | { |
337 | aio_req req; |
558 | dREQ; |
338 | |
|
|
339 | Newz (0, req, 1, aio_cb); |
|
|
340 | |
|
|
341 | if (!req) |
|
|
342 | croak ("out of memory during aio_req allocation"); |
|
|
343 | |
559 | |
344 | req->type = REQ_OPEN; |
560 | req->type = REQ_OPEN; |
345 | req->data = newSVsv (pathname); |
561 | req->data = newSVsv (pathname); |
346 | req->dataptr = SvPV_nolen (req->data); |
562 | req->dataptr = SvPVbyte_nolen (req->data); |
347 | req->fd = flags; |
563 | req->fd = flags; |
348 | req->mode = mode; |
564 | req->mode = mode; |
349 | req->callback = SvREFCNT_inc (callback); |
|
|
350 | |
565 | |
351 | send_req (req); |
566 | send_req (req); |
352 | } |
567 | } |
353 | |
568 | |
354 | void |
569 | void |
355 | aio_close(fh,callback) |
570 | aio_close(fh,callback=&PL_sv_undef) |
356 | InputStream fh |
571 | SV * fh |
357 | SV * callback |
572 | SV * callback |
358 | PROTOTYPE: $$ |
573 | PROTOTYPE: $;$ |
359 | ALIAS: |
574 | ALIAS: |
360 | aio_close = REQ_CLOSE |
575 | aio_close = REQ_CLOSE |
361 | aio_fsync = REQ_FSYNC |
576 | aio_fsync = REQ_FSYNC |
362 | aio_fdatasync = REQ_FDATASYNC |
577 | aio_fdatasync = REQ_FDATASYNC |
363 | CODE: |
578 | CODE: |
364 | { |
579 | { |
|
|
580 | dREQ; |
|
|
581 | |
|
|
582 | req->type = ix; |
|
|
583 | req->fh = newSVsv (fh); |
|
|
584 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
|
|
585 | |
|
|
586 | send_req (req); |
|
|
587 | } |
|
|
588 | |
|
|
589 | void |
|
|
590 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
|
|
591 | SV * fh |
|
|
592 | UV offset |
|
|
593 | IV length |
|
|
594 | SV * data |
|
|
595 | IV dataoffset |
|
|
596 | SV * callback |
|
|
597 | ALIAS: |
|
|
598 | aio_read = REQ_READ |
|
|
599 | aio_write = REQ_WRITE |
|
|
600 | PROTOTYPE: $$$$$;$ |
|
|
601 | CODE: |
|
|
602 | { |
365 | aio_req req; |
603 | aio_req req; |
|
|
604 | STRLEN svlen; |
|
|
605 | char *svptr = SvPVbyte (data, svlen); |
366 | |
606 | |
367 | Newz (0, req, 1, aio_cb); |
607 | SvUPGRADE (data, SVt_PV); |
|
|
608 | SvPOK_on (data); |
368 | |
609 | |
369 | if (!req) |
610 | if (dataoffset < 0) |
370 | croak ("out of memory during aio_req allocation"); |
611 | dataoffset += svlen; |
371 | |
612 | |
372 | req->type = ix; |
613 | if (dataoffset < 0 || dataoffset > svlen) |
373 | req->fd = PerlIO_fileno (fh); |
614 | croak ("data offset outside of string"); |
374 | req->callback = SvREFCNT_inc (callback); |
|
|
375 | |
615 | |
376 | send_req (req); |
616 | if (ix == REQ_WRITE) |
377 | } |
617 | { |
378 | |
618 | /* write: check length and adjust. */ |
379 | void |
619 | if (length < 0 || length + dataoffset > svlen) |
380 | aio_read(fh,offset,length,data,dataoffset,callback) |
620 | length = svlen - dataoffset; |
381 | InputStream fh |
621 | } |
382 | UV offset |
622 | else |
383 | IV length |
623 | { |
384 | SV * data |
624 | /* read: grow scalar as necessary */ |
385 | IV dataoffset |
625 | svptr = SvGROW (data, length + dataoffset); |
386 | SV * callback |
626 | } |
387 | PROTOTYPE: $$$$$$ |
|
|
388 | CODE: |
|
|
389 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
390 | |
|
|
391 | void |
|
|
392 | aio_write(fh,offset,length,data,dataoffset,callback) |
|
|
393 | OutputStream fh |
|
|
394 | UV offset |
|
|
395 | IV length |
|
|
396 | SV * data |
|
|
397 | IV dataoffset |
|
|
398 | SV * callback |
|
|
399 | PROTOTYPE: $$$$$$ |
|
|
400 | CODE: |
|
|
401 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
402 | |
|
|
403 | void |
|
|
404 | aio_readahead(fh,offset,length,callback) |
|
|
405 | InputStream fh |
|
|
406 | UV offset |
|
|
407 | IV length |
|
|
408 | SV * callback |
|
|
409 | PROTOTYPE: $$$$ |
|
|
410 | CODE: |
|
|
411 | { |
|
|
412 | aio_req req; |
|
|
413 | |
627 | |
414 | if (length < 0) |
628 | if (length < 0) |
415 | croak ("length must not be negative"); |
629 | croak ("length must not be negative"); |
416 | |
630 | |
417 | Newz (0, req, 1, aio_cb); |
631 | { |
|
|
632 | dREQ; |
418 | |
633 | |
419 | if (!req) |
634 | req->type = ix; |
420 | croak ("out of memory during aio_req allocation"); |
635 | req->fh = newSVsv (fh); |
|
|
636 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
|
|
637 | : IoOFP (sv_2io (fh))); |
|
|
638 | req->offset = offset; |
|
|
639 | req->length = length; |
|
|
640 | req->data = SvREFCNT_inc (data); |
|
|
641 | req->dataptr = (char *)svptr + dataoffset; |
|
|
642 | |
|
|
643 | if (!SvREADONLY (data)) |
|
|
644 | { |
|
|
645 | SvREADONLY_on (data); |
|
|
646 | req->data2ptr = (void *)data; |
|
|
647 | } |
|
|
648 | |
|
|
649 | send_req (req); |
|
|
650 | } |
|
|
651 | } |
|
|
652 | |
|
|
653 | void |
|
|
654 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
|
|
655 | SV * fh |
|
|
656 | UV offset |
|
|
657 | IV length |
|
|
658 | SV * callback |
|
|
659 | PROTOTYPE: $$$;$ |
|
|
660 | CODE: |
|
|
661 | { |
|
|
662 | dREQ; |
421 | |
663 | |
422 | req->type = REQ_READAHEAD; |
664 | req->type = REQ_READAHEAD; |
|
|
665 | req->fh = newSVsv (fh); |
423 | req->fd = PerlIO_fileno (fh); |
666 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
424 | req->offset = offset; |
667 | req->offset = offset; |
425 | req->length = length; |
668 | req->length = length; |
426 | req->callback = SvREFCNT_inc (callback); |
|
|
427 | |
669 | |
428 | send_req (req); |
670 | send_req (req); |
429 | } |
671 | } |
430 | |
672 | |
431 | void |
673 | void |
432 | aio_stat(fh_or_path,callback) |
674 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
433 | SV * fh_or_path |
675 | SV * fh_or_path |
434 | SV * callback |
676 | SV * callback |
435 | PROTOTYPE: $$ |
|
|
436 | ALIAS: |
677 | ALIAS: |
|
|
678 | aio_stat = REQ_STAT |
437 | aio_lstat = 1 |
679 | aio_lstat = REQ_LSTAT |
438 | CODE: |
680 | CODE: |
439 | { |
681 | { |
440 | aio_req req; |
682 | dREQ; |
441 | |
|
|
442 | Newz (0, req, 1, aio_cb); |
|
|
443 | |
|
|
444 | if (!req) |
|
|
445 | croak ("out of memory during aio_req allocation"); |
|
|
446 | |
683 | |
447 | New (0, req->statdata, 1, Stat_t); |
684 | New (0, req->statdata, 1, Stat_t); |
448 | |
|
|
449 | if (!req->statdata) |
685 | if (!req->statdata) |
|
|
686 | { |
|
|
687 | free_req (req); |
450 | croak ("out of memory during aio_req->statdata allocation"); |
688 | croak ("out of memory during aio_req->statdata allocation"); |
|
|
689 | } |
451 | |
690 | |
452 | if (SvPOK (fh_or_path)) |
691 | if (SvPOK (fh_or_path)) |
453 | { |
692 | { |
454 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
693 | req->type = ix; |
455 | req->data = newSVsv (fh_or_path); |
694 | req->data = newSVsv (fh_or_path); |
456 | req->dataptr = SvPV_nolen (req->data); |
695 | req->dataptr = SvPVbyte_nolen (req->data); |
457 | } |
696 | } |
458 | else |
697 | else |
459 | { |
698 | { |
460 | req->type = REQ_FSTAT; |
699 | req->type = REQ_FSTAT; |
|
|
700 | req->fh = newSVsv (fh_or_path); |
461 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
701 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
462 | } |
702 | } |
463 | |
703 | |
464 | req->callback = SvREFCNT_inc (callback); |
|
|
465 | |
|
|
466 | send_req (req); |
704 | send_req (req); |
467 | } |
705 | } |
468 | |
706 | |
469 | void |
707 | void |
470 | aio_unlink(pathname,callback) |
708 | aio_unlink(pathname,callback=&PL_sv_undef) |
471 | SV * pathname |
709 | SV * pathname |
472 | SV * callback |
710 | SV * callback |
473 | PROTOTYPE: $$ |
711 | ALIAS: |
|
|
712 | aio_unlink = REQ_UNLINK |
|
|
713 | aio_rmdir = REQ_RMDIR |
474 | CODE: |
714 | CODE: |
475 | { |
715 | { |
476 | aio_req req; |
716 | dREQ; |
477 | |
717 | |
478 | Newz (0, req, 1, aio_cb); |
718 | req->type = ix; |
479 | |
|
|
480 | if (!req) |
|
|
481 | croak ("out of memory during aio_req allocation"); |
|
|
482 | |
|
|
483 | req->type = REQ_UNLINK; |
|
|
484 | req->data = newSVsv (pathname); |
719 | req->data = newSVsv (pathname); |
485 | req->dataptr = SvPV_nolen (req->data); |
720 | req->dataptr = SvPVbyte_nolen (req->data); |
486 | req->callback = SvREFCNT_inc (callback); |
|
|
487 | |
721 | |
488 | send_req (req); |
722 | send_req (req); |
489 | } |
723 | } |
|
|
724 | |
|
|
725 | void |
|
|
726 | aio_symlink(oldpath,newpath,callback=&PL_sv_undef) |
|
|
727 | SV * oldpath |
|
|
728 | SV * newpath |
|
|
729 | SV * callback |
|
|
730 | CODE: |
|
|
731 | { |
|
|
732 | dREQ; |
|
|
733 | |
|
|
734 | req->type = REQ_SYMLINK; |
|
|
735 | req->fh = newSVsv (oldpath); |
|
|
736 | req->data2ptr = SvPVbyte_nolen (req->fh); |
|
|
737 | req->data = newSVsv (newpath); |
|
|
738 | req->dataptr = SvPVbyte_nolen (req->data); |
|
|
739 | |
|
|
740 | send_req (req); |
|
|
741 | } |
|
|
742 | |
|
|
743 | void |
|
|
744 | flush() |
|
|
745 | PROTOTYPE: |
|
|
746 | CODE: |
|
|
747 | while (nreqs) |
|
|
748 | { |
|
|
749 | poll_wait (); |
|
|
750 | poll_cb (); |
|
|
751 | } |
|
|
752 | |
|
|
753 | void |
|
|
754 | poll() |
|
|
755 | PROTOTYPE: |
|
|
756 | CODE: |
|
|
757 | if (nreqs) |
|
|
758 | { |
|
|
759 | poll_wait (); |
|
|
760 | poll_cb (); |
|
|
761 | } |
490 | |
762 | |
491 | int |
763 | int |
492 | poll_fileno() |
764 | poll_fileno() |
493 | PROTOTYPE: |
765 | PROTOTYPE: |
494 | CODE: |
766 | CODE: |
495 | RETVAL = respipe[0]; |
767 | RETVAL = respipe [0]; |
496 | OUTPUT: |
768 | OUTPUT: |
497 | RETVAL |
769 | RETVAL |
498 | |
770 | |
499 | int |
771 | int |
500 | poll_cb(...) |
772 | poll_cb(...) |
501 | PROTOTYPE: |
773 | PROTOTYPE: |
502 | CODE: |
774 | CODE: |
503 | RETVAL = poll_cb (aTHX); |
775 | RETVAL = poll_cb (); |
504 | OUTPUT: |
776 | OUTPUT: |
505 | RETVAL |
777 | RETVAL |
506 | |
778 | |
507 | void |
779 | void |
508 | poll_wait() |
780 | poll_wait() |
509 | PROTOTYPE: |
781 | PROTOTYPE: |
510 | CODE: |
782 | CODE: |
|
|
783 | if (nreqs) |
511 | poll_wait (); |
784 | poll_wait (); |
512 | |
785 | |
513 | int |
786 | int |
514 | nreqs() |
787 | nreqs() |
515 | PROTOTYPE: |
788 | PROTOTYPE: |
516 | CODE: |
789 | CODE: |