0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10
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11
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22
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12 #if (NGX_TEST_BUILD_SOLARIS_SENDFILEV)
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13
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14 /* Solaris declarations */
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15
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16 typedef struct sendfilevec {
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17 int sfv_fd;
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18 u_int sfv_flag;
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19 off_t sfv_off;
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20 size_t sfv_len;
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21 } sendfilevec_t;
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22
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23 #define SFV_FD_SELF -2
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24
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25 static ssize_t sendfilev(int fd, const struct sendfilevec *vec,
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134
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26 int sfvcnt, size_t *xferred)
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22
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27 {
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28 return -1;
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29 }
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30
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31 #endif
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32
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33
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0
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34 #define NGX_SENDFILEVECS 16
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35
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36
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134
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37 ngx_chain_t *
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38 ngx_solaris_sendfilev_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
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39 {
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40 int fd;
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41 u_char *prev;
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22
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42 off_t size, send, prev_send, aligned, fprev;
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43 size_t sent;
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44 ssize_t n;
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45 ngx_int_t eintr, complete;
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46 ngx_err_t err;
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47 sendfilevec_t *sfv, sfvs[NGX_SENDFILEVECS];
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48 ngx_array_t vec;
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49 ngx_event_t *wev;
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50
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50 ngx_chain_t *cl;
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51
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52 wev = c->write;
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53
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54 if (!wev->ready) {
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55 return in;
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56 }
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57
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2
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58 if (!c->sendfile) {
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59 return ngx_writev_chain(c, in, limit);
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60 }
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61
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22
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62
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63 /* the maximum limit size is the maximum size_t value - the page size */
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64
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26
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65 if (limit == 0 || limit > NGX_MAX_SIZE_T_VALUE - ngx_pagesize) {
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66 limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize;
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22
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67 }
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68
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69
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70 send = 0;
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71 complete = 0;
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72
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73 vec.elts = sfvs;
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74 vec.size = sizeof(sendfilevec_t);
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75 vec.nalloc = NGX_SENDFILEVECS;
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76 vec.pool = c->pool;
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77
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78 for ( ;; ) {
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79 fd = SFV_FD_SELF;
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80 prev = NULL;
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81 fprev = 0;
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82 sfv = NULL;
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83 eintr = 0;
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84 sent = 0;
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22
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85 prev_send = send;
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86
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87 vec.nelts = 0;
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88
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89 /* create the sendfilevec and coalesce the neighbouring bufs */
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90
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91 for (cl = in; cl && vec.nelts < IOV_MAX && send < limit; cl = cl->next)
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92 {
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93 if (ngx_buf_special(cl->buf)) {
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94 continue;
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95 }
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96
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97 if (ngx_buf_in_memory_only(cl->buf)) {
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98 fd = SFV_FD_SELF;
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99
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100 size = cl->buf->last - cl->buf->pos;
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101
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102 if (send + size > limit) {
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103 size = limit - send;
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104 }
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105
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106 if (prev == cl->buf->pos) {
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22
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107 sfv->sfv_len += (size_t) size;
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0
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108
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109 } else {
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50
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110 sfv = ngx_array_push(&vec);
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111 if (sfv == NULL) {
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112 return NGX_CHAIN_ERROR;
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113 }
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114
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115 sfv->sfv_fd = SFV_FD_SELF;
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116 sfv->sfv_flag = 0;
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117 sfv->sfv_off = (off_t) (uintptr_t) cl->buf->pos;
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22
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118 sfv->sfv_len = (size_t) size;
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0
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119 }
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120
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121 prev = cl->buf->pos + (size_t) size;
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122 send += size;
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123
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124 } else {
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125 prev = NULL;
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126
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22
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127 size = cl->buf->file_last - cl->buf->file_pos;
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128
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129 if (send + size > limit) {
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130 size = limit - send;
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131
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132 aligned = (cl->buf->file_pos + size + ngx_pagesize - 1)
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133 & ~(ngx_pagesize - 1);
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134
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135 if (aligned <= cl->buf->file_last) {
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136 size = aligned - cl->buf->file_pos;
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137 }
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138 }
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139
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140 if (fd == cl->buf->file->fd && fprev == cl->buf->file_pos) {
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22
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141 sfv->sfv_len += (size_t) size;
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0
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142
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143 } else {
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50
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144 sfv = ngx_array_push(&vec);
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145 if (sfv == NULL) {
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146 return NGX_CHAIN_ERROR;
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147 }
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148
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149 fd = cl->buf->file->fd;
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150 sfv->sfv_fd = fd;
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151 sfv->sfv_flag = 0;
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152 sfv->sfv_off = cl->buf->file_pos;
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22
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153 sfv->sfv_len = (size_t) size;
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154 }
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155
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156 fprev = cl->buf->file_pos + size;
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157 send += size;
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158 }
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159 }
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160
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161 n = sendfilev(c->fd, vec.elts, vec.nelts, &sent);
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162
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163 if (n == -1) {
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164 err = ngx_errno;
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165
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166 if (err == NGX_EAGAIN || err == NGX_EINTR) {
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167 if (err == NGX_EINTR) {
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168 eintr = 1;
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169 }
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170
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171 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, err,
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172 "sendfilev() sent only %uz bytes", sent);
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0
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173
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174 } else {
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175 wev->error = 1;
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176 ngx_connection_error(c, err, "sendfilev() failed");
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177 return NGX_CHAIN_ERROR;
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178 }
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179 }
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180
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181 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
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182 "sendfilev: %z %z", n, sent);
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183
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22
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184 if (send - prev_send == (off_t) sent) {
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185 complete = 1;
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186 }
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187
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188 c->sent += sent;
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189
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190 for (cl = in; cl; cl = cl->next) {
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191
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192 if (ngx_buf_special(cl->buf)) {
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126
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193 continue;
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194 }
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195
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196 if (sent == 0) {
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197 break;
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198 }
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199
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200 size = ngx_buf_size(cl->buf);
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201
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22
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202 if ((off_t) sent >= size) {
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203 sent = (size_t) ((off_t) sent - size);
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204
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205 if (ngx_buf_in_memory(cl->buf)) {
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206 cl->buf->pos = cl->buf->last;
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207 }
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208
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209 if (cl->buf->in_file) {
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210 cl->buf->file_pos = cl->buf->file_last;
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211 }
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212
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213 continue;
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214 }
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215
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216 if (ngx_buf_in_memory(cl->buf)) {
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217 cl->buf->pos += sent;
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218 }
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219
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220 if (cl->buf->in_file) {
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221 cl->buf->file_pos += sent;
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222 }
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223
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224 break;
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225 }
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226
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227 if (eintr) {
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228 continue;
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229 }
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230
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231 if (!complete) {
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232 wev->ready = 0;
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233 return cl;
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234 }
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235
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236 if (send >= limit || cl == NULL) {
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237 return cl;
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238 }
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239
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240 in = cl;
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241 }
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242 }
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