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