1 | #define PERL_NO_GET_CONTEXT |
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2 | |
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3 | #include "EXTERN.h" |
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4 | #include "perl.h" |
1 | #include "perl.h" |
5 | #include "XSUB.h" |
2 | #include "XSUB.h" |
6 | |
3 | |
7 | #include <sys/types.h> |
4 | #include <sys/types.h> |
8 | #include <sys/stat.h> |
5 | #include <sys/stat.h> |
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6 | |
9 | #include <unistd.h> |
7 | #include <unistd.h> |
10 | #include <fcntl.h> |
8 | #include <fcntl.h> |
11 | #include <signal.h> |
9 | #include <signal.h> |
12 | #include <sched.h> |
10 | #include <sched.h> |
13 | #include <endian.h> |
11 | #if __linux |
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12 | #include <sys/syscall.h> |
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13 | #endif |
14 | |
14 | |
15 | #include <pthread.h> |
15 | #include <pthread.h> |
16 | #include <sys/syscall.h> |
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17 | |
16 | |
18 | typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
17 | 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 ;) */ |
18 | 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 ;) */ |
19 | typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */ |
21 | |
20 | |
22 | #if __i386 || __amd64 |
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23 | # define STACKSIZE ( 256 * sizeof (long)) |
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24 | #elif __ia64 |
21 | #if __ia64 |
25 | # define STACKSIZE (8192 * sizeof (long)) |
22 | # define STACKSIZE 65536 |
26 | #else |
23 | #else |
27 | # define STACKSIZE ( 512 * sizeof (long)) |
24 | # define STACKSIZE 4096 |
28 | #endif |
25 | #endif |
29 | |
26 | |
30 | enum { |
27 | enum { |
31 | REQ_QUIT, |
28 | REQ_QUIT, |
32 | REQ_OPEN, REQ_CLOSE, |
29 | REQ_OPEN, REQ_CLOSE, |
… | |
… | |
34 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
31 | REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK, |
35 | REQ_FSYNC, REQ_FDATASYNC, |
32 | REQ_FSYNC, REQ_FDATASYNC, |
36 | }; |
33 | }; |
37 | |
34 | |
38 | typedef struct aio_cb { |
35 | typedef struct aio_cb { |
39 | struct aio_cb *next; |
36 | struct aio_cb *volatile next; |
40 | |
37 | |
41 | int type; |
38 | int type; |
42 | |
39 | |
43 | int fd; |
40 | int fd; |
44 | off_t offset; |
41 | off_t offset; |
45 | size_t length; |
42 | size_t length; |
46 | ssize_t result; |
43 | ssize_t result; |
47 | mode_t mode; /* open */ |
44 | mode_t mode; /* open */ |
48 | int errorno; |
45 | int errorno; |
49 | SV *data, *callback; |
46 | SV *data, *callback, *fh; |
50 | void *dataptr; |
47 | void *dataptr; |
51 | STRLEN dataoffset; |
48 | STRLEN dataoffset; |
52 | |
49 | |
53 | Stat_t *statdata; |
50 | Stat_t *statdata; |
54 | } aio_cb; |
51 | } aio_cb; |
55 | |
52 | |
56 | typedef aio_cb *aio_req; |
53 | typedef aio_cb *aio_req; |
57 | |
54 | |
58 | static int started; |
55 | static int started; |
59 | static int nreqs; |
56 | static volatile int nreqs; |
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57 | static int max_outstanding = 1<<30; |
60 | static int reqpipe[2], respipe[2]; |
58 | static int respipe [2]; |
61 | |
59 | |
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60 | static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER; |
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61 | static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER; |
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62 | static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
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63 | |
62 | static aio_req qs, qe; /* queue start, queue end */ |
64 | static volatile aio_req reqs, reqe; /* queue start, queue end */ |
63 | |
65 | static volatile aio_req ress, rese; /* queue start, queue end */ |
64 | static void *aio_proc(void *arg); |
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65 | |
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66 | static void |
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67 | start_thread (void) |
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68 | { |
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69 | sigset_t fullsigset, oldsigset; |
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70 | pthread_t tid; |
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71 | pthread_attr_t attr; |
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72 | |
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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) |
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160 | croak ("out of memory during aio_req allocation"); |
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161 | |
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162 | req->type = dowrite ? REQ_WRITE : REQ_READ; |
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163 | req->fd = fd; |
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164 | req->offset = offset; |
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165 | req->length = length; |
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166 | req->data = SvREFCNT_inc (data); |
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167 | req->dataptr = (char *)svptr + dataoffset; |
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168 | req->callback = SvREFCNT_inc (callback); |
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169 | |
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170 | send_req (req); |
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171 | } |
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172 | |
66 | |
173 | static void |
67 | static void |
174 | poll_wait () |
68 | poll_wait () |
175 | { |
69 | { |
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70 | if (nreqs && !ress) |
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71 | { |
176 | fd_set rfd; |
72 | fd_set rfd; |
177 | FD_ZERO(&rfd); |
73 | FD_ZERO(&rfd); |
178 | FD_SET(respipe[0], &rfd); |
74 | FD_SET(respipe [0], &rfd); |
179 | |
75 | |
180 | select (respipe[0] + 1, &rfd, 0, 0, 0); |
76 | select (respipe [0] + 1, &rfd, 0, 0, 0); |
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77 | } |
181 | } |
78 | } |
182 | |
79 | |
183 | static int |
80 | static int |
184 | poll_cb (pTHX) |
81 | poll_cb () |
185 | { |
82 | { |
186 | dSP; |
83 | dSP; |
187 | int count = 0; |
84 | int count = 0; |
188 | aio_req req; |
85 | aio_req req, prv; |
189 | |
86 | |
190 | while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
87 | pthread_mutex_lock (&reslock); |
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88 | |
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89 | { |
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90 | /* read any signals sent by the worker threads */ |
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91 | char buf [32]; |
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92 | while (read (respipe [0], buf, 32) > 0) |
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93 | ; |
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94 | } |
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95 | |
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96 | req = ress; |
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97 | ress = rese = 0; |
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98 | |
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99 | pthread_mutex_unlock (&reslock); |
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100 | |
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101 | while (req) |
191 | { |
102 | { |
192 | nreqs--; |
103 | nreqs--; |
193 | |
104 | |
194 | if (req->type == REQ_QUIT) |
105 | if (req->type == REQ_QUIT) |
195 | started--; |
106 | started--; |
… | |
… | |
203 | + req->result > 0 ? req->result : 0); |
114 | + req->result > 0 ? req->result : 0); |
204 | |
115 | |
205 | if (req->data) |
116 | if (req->data) |
206 | SvREFCNT_dec (req->data); |
117 | SvREFCNT_dec (req->data); |
207 | |
118 | |
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119 | if (req->fh) |
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120 | SvREFCNT_dec (req->fh); |
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121 | |
208 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
122 | if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT) |
209 | { |
123 | { |
210 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
124 | PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT; |
211 | PL_laststatval = req->result; |
125 | PL_laststatval = req->result; |
212 | PL_statcache = *(req->statdata); |
126 | PL_statcache = *(req->statdata); |
213 | |
127 | |
214 | Safefree (req->statdata); |
128 | Safefree (req->statdata); |
215 | } |
129 | } |
216 | |
130 | |
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131 | ENTER; |
217 | PUSHMARK (SP); |
132 | PUSHMARK (SP); |
218 | XPUSHs (sv_2mortal (newSViv (req->result))); |
133 | XPUSHs (sv_2mortal (newSViv (req->result))); |
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134 | |
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135 | if (req->type == REQ_OPEN) |
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136 | { |
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137 | /* convert fd to fh */ |
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138 | SV *fh; |
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139 | |
219 | PUTBACK; |
140 | PUTBACK; |
220 | call_sv (req->callback, G_VOID); |
141 | call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL); |
221 | SPAGAIN; |
142 | SPAGAIN; |
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143 | |
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144 | fh = SvREFCNT_inc (POPs); |
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145 | |
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146 | PUSHMARK (SP); |
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147 | XPUSHs (sv_2mortal (fh)); |
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148 | } |
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149 | |
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150 | if (SvOK (req->callback)) |
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151 | { |
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152 | PUTBACK; |
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153 | call_sv (req->callback, G_VOID | G_EVAL); |
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154 | SPAGAIN; |
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155 | } |
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156 | |
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157 | LEAVE; |
222 | |
158 | |
223 | if (req->callback) |
159 | if (req->callback) |
224 | SvREFCNT_dec (req->callback); |
160 | SvREFCNT_dec (req->callback); |
225 | |
161 | |
226 | errno = errorno; |
162 | errno = errorno; |
227 | count++; |
163 | count++; |
228 | } |
164 | } |
229 | |
165 | |
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166 | prv = req; |
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167 | req = req->next; |
230 | Safefree (req); |
168 | Safefree (prv); |
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169 | |
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170 | /* TODO: croak on errors? */ |
231 | } |
171 | } |
232 | |
172 | |
233 | if (qs) |
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234 | send_reqs (); |
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235 | |
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236 | return count; |
173 | return count; |
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174 | } |
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175 | |
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176 | static void *aio_proc(void *arg); |
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177 | |
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178 | static void |
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179 | start_thread (void) |
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180 | { |
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181 | sigset_t fullsigset, oldsigset; |
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182 | pthread_t tid; |
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183 | pthread_attr_t attr; |
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184 | |
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185 | pthread_attr_init (&attr); |
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186 | pthread_attr_setstacksize (&attr, STACKSIZE); |
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187 | pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
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188 | |
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189 | sigfillset (&fullsigset); |
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190 | sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset); |
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191 | |
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192 | if (pthread_create (&tid, &attr, aio_proc, 0) == 0) |
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193 | started++; |
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194 | |
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195 | sigprocmask (SIG_SETMASK, &oldsigset, 0); |
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196 | } |
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197 | |
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198 | static void |
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199 | send_req (aio_req req) |
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200 | { |
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201 | nreqs++; |
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202 | |
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203 | pthread_mutex_lock (&reqlock); |
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204 | |
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205 | req->next = 0; |
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206 | |
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207 | if (reqe) |
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208 | { |
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209 | reqe->next = req; |
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210 | reqe = req; |
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211 | } |
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212 | else |
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213 | reqe = reqs = req; |
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214 | |
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215 | pthread_cond_signal (&reqwait); |
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216 | pthread_mutex_unlock (&reqlock); |
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217 | |
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218 | while (nreqs > max_outstanding) |
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219 | { |
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220 | poll_wait (); |
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221 | poll_cb (); |
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222 | } |
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223 | } |
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224 | |
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225 | static void |
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226 | end_thread (void) |
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227 | { |
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228 | aio_req req; |
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229 | New (0, req, 1, aio_cb); |
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230 | req->type = REQ_QUIT; |
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231 | |
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232 | send_req (req); |
237 | } |
233 | } |
238 | |
234 | |
239 | static void * |
235 | static void * |
240 | aio_proc (void *thr_arg) |
236 | aio_proc (void *thr_arg) |
241 | { |
237 | { |
242 | aio_req req; |
238 | aio_req req; |
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239 | int type; |
243 | |
240 | |
244 | /* then loop */ |
241 | do |
245 | while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req)) |
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246 | { |
242 | { |
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243 | pthread_mutex_lock (&reqlock); |
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244 | |
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245 | for (;;) |
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246 | { |
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247 | req = reqs; |
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248 | |
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249 | if (reqs) |
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250 | { |
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251 | reqs = reqs->next; |
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252 | if (!reqs) reqe = 0; |
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253 | } |
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254 | |
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255 | if (req) |
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256 | break; |
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257 | |
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258 | pthread_cond_wait (&reqwait, &reqlock); |
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259 | } |
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260 | |
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261 | pthread_mutex_unlock (&reqlock); |
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262 | |
247 | errno = 0; /* strictly unnecessary */ |
263 | errno = 0; /* strictly unnecessary */ |
248 | |
264 | |
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265 | type = req->type; |
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266 | |
249 | switch (req->type) |
267 | switch (type) |
250 | { |
268 | { |
251 | case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break; |
269 | 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; |
270 | case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break; |
253 | #if SYS_readahead |
271 | #if SYS_readahead |
254 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
272 | case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break; |
255 | #else |
273 | #else |
256 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
274 | case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break; |
257 | #endif |
275 | #endif |
… | |
… | |
266 | |
284 | |
267 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
285 | case REQ_FSYNC: req->result = fsync (req->fd); break; |
268 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
286 | case REQ_FDATASYNC: req->result = fdatasync (req->fd); break; |
269 | |
287 | |
270 | case REQ_QUIT: |
288 | case REQ_QUIT: |
271 | write (respipe[1], (void *)&req, sizeof (req)); |
289 | break; |
272 | return 0; |
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273 | |
290 | |
274 | default: |
291 | default: |
275 | req->result = ENOSYS; |
292 | req->result = ENOSYS; |
276 | break; |
293 | break; |
277 | } |
294 | } |
278 | |
295 | |
279 | req->errorno = errno; |
296 | req->errorno = errno; |
280 | write (respipe[1], (void *)&req, sizeof (req)); |
297 | |
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298 | pthread_mutex_lock (&reslock); |
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299 | |
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300 | req->next = 0; |
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301 | |
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302 | if (rese) |
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303 | { |
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304 | rese->next = req; |
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305 | rese = req; |
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306 | } |
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307 | else |
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308 | { |
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309 | rese = ress = req; |
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310 | |
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311 | /* write a dummy byte to the pipe so fh becomes ready */ |
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312 | write (respipe [1], &respipe, 1); |
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313 | } |
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314 | |
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315 | pthread_mutex_unlock (&reslock); |
281 | } |
316 | } |
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317 | while (type != REQ_QUIT); |
282 | |
318 | |
283 | return 0; |
319 | return 0; |
284 | } |
320 | } |
285 | |
321 | |
286 | MODULE = IO::AIO PACKAGE = IO::AIO |
322 | MODULE = IO::AIO PACKAGE = IO::AIO |
287 | |
323 | |
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324 | PROTOTYPES: ENABLE |
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325 | |
288 | BOOT: |
326 | BOOT: |
289 | { |
327 | { |
290 | if (pipe (reqpipe) || pipe (respipe)) |
328 | if (pipe (respipe)) |
291 | croak ("unable to initialize request or result pipe"); |
329 | croak ("unable to initialize result pipe"); |
292 | |
330 | |
293 | if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK)) |
331 | if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
294 | croak ("cannot set result pipe to nonblocking mode"); |
332 | croak ("cannot set result pipe to nonblocking mode"); |
295 | |
333 | |
296 | if (fcntl (respipe[0], F_SETFL, O_NONBLOCK)) |
334 | if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
297 | croak ("cannot set result pipe to nonblocking mode"); |
335 | croak ("cannot set result pipe to nonblocking mode"); |
298 | } |
336 | } |
299 | |
337 | |
300 | void |
338 | void |
301 | min_parallel(nthreads) |
339 | min_parallel(nthreads) |
… | |
… | |
319 | } |
357 | } |
320 | |
358 | |
321 | while (started > nthreads) |
359 | while (started > nthreads) |
322 | { |
360 | { |
323 | poll_wait (); |
361 | poll_wait (); |
324 | poll_cb (aTHX); |
362 | poll_cb (); |
325 | } |
363 | } |
326 | } |
364 | } |
327 | |
365 | |
|
|
366 | int |
|
|
367 | max_outstanding(nreqs) |
|
|
368 | int nreqs |
|
|
369 | PROTOTYPE: $ |
|
|
370 | CODE: |
|
|
371 | RETVAL = max_outstanding; |
|
|
372 | max_outstanding = nreqs; |
|
|
373 | |
328 | void |
374 | void |
329 | aio_open(pathname,flags,mode,callback) |
375 | aio_open(pathname,flags,mode,callback=&PL_sv_undef) |
330 | SV * pathname |
376 | SV * pathname |
331 | int flags |
377 | int flags |
332 | int mode |
378 | int mode |
333 | SV * callback |
379 | SV * callback |
334 | PROTOTYPE: $$$$ |
380 | PROTOTYPE: $$$;$ |
335 | CODE: |
381 | CODE: |
336 | { |
382 | { |
337 | aio_req req; |
383 | aio_req req; |
338 | |
384 | |
339 | Newz (0, req, 1, aio_cb); |
385 | Newz (0, req, 1, aio_cb); |
… | |
… | |
350 | |
396 | |
351 | send_req (req); |
397 | send_req (req); |
352 | } |
398 | } |
353 | |
399 | |
354 | void |
400 | void |
355 | aio_close(fh,callback) |
401 | aio_close(fh,callback=&PL_sv_undef) |
356 | InputStream fh |
402 | SV * fh |
357 | SV * callback |
403 | SV * callback |
358 | PROTOTYPE: $$ |
404 | PROTOTYPE: $;$ |
359 | ALIAS: |
405 | ALIAS: |
360 | aio_close = REQ_CLOSE |
406 | aio_close = REQ_CLOSE |
361 | aio_fsync = REQ_FSYNC |
407 | aio_fsync = REQ_FSYNC |
362 | aio_fdatasync = REQ_FDATASYNC |
408 | aio_fdatasync = REQ_FDATASYNC |
363 | CODE: |
409 | CODE: |
… | |
… | |
368 | |
414 | |
369 | if (!req) |
415 | if (!req) |
370 | croak ("out of memory during aio_req allocation"); |
416 | croak ("out of memory during aio_req allocation"); |
371 | |
417 | |
372 | req->type = ix; |
418 | req->type = ix; |
|
|
419 | req->fh = newSVsv (fh); |
373 | req->fd = PerlIO_fileno (fh); |
420 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
374 | req->callback = SvREFCNT_inc (callback); |
421 | req->callback = SvREFCNT_inc (callback); |
375 | |
422 | |
376 | send_req (req); |
423 | send_req (req); |
377 | } |
424 | } |
378 | |
425 | |
379 | void |
426 | void |
380 | aio_read(fh,offset,length,data,dataoffset,callback) |
427 | aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef) |
381 | InputStream fh |
428 | SV * fh |
382 | UV offset |
429 | UV offset |
383 | IV length |
430 | IV length |
384 | SV * data |
431 | SV * data |
385 | IV dataoffset |
432 | IV dataoffset |
386 | SV * callback |
433 | SV * callback |
|
|
434 | ALIAS: |
|
|
435 | aio_read = REQ_READ |
|
|
436 | aio_write = REQ_WRITE |
387 | PROTOTYPE: $$$$$$ |
437 | PROTOTYPE: $$$$$;$ |
388 | CODE: |
438 | CODE: |
389 | read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
390 | |
|
|
391 | void |
|
|
392 | aio_write(fh,offset,length,data,dataoffset,callback) |
|
|
393 | OutputStream fh |
|
|
394 | UV offset |
|
|
395 | IV length |
|
|
396 | SV * data |
|
|
397 | IV dataoffset |
|
|
398 | SV * callback |
|
|
399 | PROTOTYPE: $$$$$$ |
|
|
400 | CODE: |
|
|
401 | read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback); |
|
|
402 | |
|
|
403 | void |
|
|
404 | aio_readahead(fh,offset,length,callback) |
|
|
405 | InputStream fh |
|
|
406 | UV offset |
|
|
407 | IV length |
|
|
408 | SV * callback |
|
|
409 | PROTOTYPE: $$$$ |
|
|
410 | CODE: |
|
|
411 | { |
439 | { |
412 | aio_req req; |
440 | aio_req req; |
|
|
441 | STRLEN svlen; |
|
|
442 | char *svptr = SvPV (data, svlen); |
|
|
443 | |
|
|
444 | SvUPGRADE (data, SVt_PV); |
|
|
445 | SvPOK_on (data); |
|
|
446 | |
|
|
447 | if (dataoffset < 0) |
|
|
448 | dataoffset += svlen; |
|
|
449 | |
|
|
450 | if (dataoffset < 0 || dataoffset > svlen) |
|
|
451 | croak ("data offset outside of string"); |
|
|
452 | |
|
|
453 | if (ix == REQ_WRITE) |
|
|
454 | { |
|
|
455 | /* write: check length and adjust. */ |
|
|
456 | if (length < 0 || length + dataoffset > svlen) |
|
|
457 | length = svlen - dataoffset; |
|
|
458 | } |
|
|
459 | else |
|
|
460 | { |
|
|
461 | /* read: grow scalar as necessary */ |
|
|
462 | svptr = SvGROW (data, length + dataoffset); |
|
|
463 | } |
413 | |
464 | |
414 | if (length < 0) |
465 | if (length < 0) |
415 | croak ("length must not be negative"); |
466 | croak ("length must not be negative"); |
416 | |
467 | |
417 | Newz (0, req, 1, aio_cb); |
468 | Newz (0, req, 1, aio_cb); |
418 | |
469 | |
419 | if (!req) |
470 | if (!req) |
420 | croak ("out of memory during aio_req allocation"); |
471 | croak ("out of memory during aio_req allocation"); |
421 | |
472 | |
|
|
473 | req->type = ix; |
|
|
474 | req->fh = newSVsv (fh); |
|
|
475 | req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh)) |
|
|
476 | : IoOFP (sv_2io (fh))); |
|
|
477 | req->offset = offset; |
|
|
478 | req->length = length; |
|
|
479 | req->data = SvREFCNT_inc (data); |
|
|
480 | req->dataptr = (char *)svptr + dataoffset; |
|
|
481 | req->callback = SvREFCNT_inc (callback); |
|
|
482 | |
|
|
483 | send_req (req); |
|
|
484 | } |
|
|
485 | |
|
|
486 | void |
|
|
487 | aio_readahead(fh,offset,length,callback=&PL_sv_undef) |
|
|
488 | SV * fh |
|
|
489 | UV offset |
|
|
490 | IV length |
|
|
491 | SV * callback |
|
|
492 | PROTOTYPE: $$$;$ |
|
|
493 | CODE: |
|
|
494 | { |
|
|
495 | aio_req req; |
|
|
496 | |
|
|
497 | if (length < 0) |
|
|
498 | croak ("length must not be negative"); |
|
|
499 | |
|
|
500 | Newz (0, req, 1, aio_cb); |
|
|
501 | |
|
|
502 | if (!req) |
|
|
503 | croak ("out of memory during aio_req allocation"); |
|
|
504 | |
422 | req->type = REQ_READAHEAD; |
505 | req->type = REQ_READAHEAD; |
|
|
506 | req->fh = newSVsv (fh); |
423 | req->fd = PerlIO_fileno (fh); |
507 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh))); |
424 | req->offset = offset; |
508 | req->offset = offset; |
425 | req->length = length; |
509 | req->length = length; |
426 | req->callback = SvREFCNT_inc (callback); |
510 | req->callback = SvREFCNT_inc (callback); |
427 | |
511 | |
428 | send_req (req); |
512 | send_req (req); |
429 | } |
513 | } |
430 | |
514 | |
431 | void |
515 | void |
432 | aio_stat(fh_or_path,callback) |
516 | aio_stat(fh_or_path,callback=&PL_sv_undef) |
433 | SV * fh_or_path |
517 | SV * fh_or_path |
434 | SV * callback |
518 | SV * callback |
435 | PROTOTYPE: $$ |
|
|
436 | ALIAS: |
519 | ALIAS: |
|
|
520 | aio_stat = REQ_STAT |
437 | aio_lstat = 1 |
521 | aio_lstat = REQ_LSTAT |
438 | CODE: |
522 | CODE: |
439 | { |
523 | { |
440 | aio_req req; |
524 | aio_req req; |
441 | |
525 | |
442 | Newz (0, req, 1, aio_cb); |
526 | Newz (0, req, 1, aio_cb); |
… | |
… | |
449 | if (!req->statdata) |
533 | if (!req->statdata) |
450 | croak ("out of memory during aio_req->statdata allocation"); |
534 | croak ("out of memory during aio_req->statdata allocation"); |
451 | |
535 | |
452 | if (SvPOK (fh_or_path)) |
536 | if (SvPOK (fh_or_path)) |
453 | { |
537 | { |
454 | req->type = ix ? REQ_LSTAT : REQ_STAT; |
538 | req->type = ix; |
455 | req->data = newSVsv (fh_or_path); |
539 | req->data = newSVsv (fh_or_path); |
456 | req->dataptr = SvPV_nolen (req->data); |
540 | req->dataptr = SvPV_nolen (req->data); |
457 | } |
541 | } |
458 | else |
542 | else |
459 | { |
543 | { |
460 | req->type = REQ_FSTAT; |
544 | req->type = REQ_FSTAT; |
|
|
545 | req->fh = newSVsv (fh_or_path); |
461 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
546 | req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path))); |
462 | } |
547 | } |
463 | |
548 | |
464 | req->callback = SvREFCNT_inc (callback); |
549 | req->callback = SvREFCNT_inc (callback); |
465 | |
550 | |
466 | send_req (req); |
551 | send_req (req); |
467 | } |
552 | } |
468 | |
553 | |
469 | void |
554 | void |
470 | aio_unlink(pathname,callback) |
555 | aio_unlink(pathname,callback=&PL_sv_undef) |
471 | SV * pathname |
556 | SV * pathname |
472 | SV * callback |
557 | SV * callback |
473 | PROTOTYPE: $$ |
|
|
474 | CODE: |
558 | CODE: |
475 | { |
559 | { |
476 | aio_req req; |
560 | aio_req req; |
477 | |
561 | |
478 | Newz (0, req, 1, aio_cb); |
562 | Newz (0, req, 1, aio_cb); |
… | |
… | |
486 | req->callback = SvREFCNT_inc (callback); |
570 | req->callback = SvREFCNT_inc (callback); |
487 | |
571 | |
488 | send_req (req); |
572 | send_req (req); |
489 | } |
573 | } |
490 | |
574 | |
|
|
575 | void |
|
|
576 | flush() |
|
|
577 | PROTOTYPE: |
|
|
578 | CODE: |
|
|
579 | while (nreqs) |
|
|
580 | { |
|
|
581 | poll_wait (); |
|
|
582 | poll_cb (); |
|
|
583 | } |
|
|
584 | |
|
|
585 | void |
|
|
586 | poll() |
|
|
587 | PROTOTYPE: |
|
|
588 | CODE: |
|
|
589 | if (nreqs) |
|
|
590 | { |
|
|
591 | poll_wait (); |
|
|
592 | poll_cb (); |
|
|
593 | } |
|
|
594 | |
491 | int |
595 | int |
492 | poll_fileno() |
596 | poll_fileno() |
493 | PROTOTYPE: |
597 | PROTOTYPE: |
494 | CODE: |
598 | CODE: |
495 | RETVAL = respipe[0]; |
599 | RETVAL = respipe [0]; |
496 | OUTPUT: |
600 | OUTPUT: |
497 | RETVAL |
601 | RETVAL |
498 | |
602 | |
499 | int |
603 | int |
500 | poll_cb(...) |
604 | poll_cb(...) |
501 | PROTOTYPE: |
605 | PROTOTYPE: |
502 | CODE: |
606 | CODE: |
503 | RETVAL = poll_cb (aTHX); |
607 | RETVAL = poll_cb (); |
504 | OUTPUT: |
608 | OUTPUT: |
505 | RETVAL |
609 | RETVAL |
506 | |
610 | |
507 | void |
611 | void |
508 | poll_wait() |
612 | poll_wait() |
509 | PROTOTYPE: |
613 | PROTOTYPE: |
510 | CODE: |
614 | CODE: |
|
|
615 | if (nreqs) |
511 | poll_wait (); |
616 | poll_wait (); |
512 | |
617 | |
513 | int |
618 | int |
514 | nreqs() |
619 | nreqs() |
515 | PROTOTYPE: |
620 | PROTOTYPE: |
516 | CODE: |
621 | CODE: |