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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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12 #define NGX_SENDFILEVECS 16
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13
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14
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15 ngx_chain_t *ngx_solaris_sendfilev_chain(ngx_connection_t *c, ngx_chain_t *in,
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16 off_t limit)
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17 {
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18 int fd;
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19 u_char *prev;
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20 off_t fprev, sprev, send, aligned;
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21 ssize_t size, sent, n;
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22 ngx_int_t eintr, complete;
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23 ngx_err_t err;
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24 sendfilevec_t *sfv, sfvs[NGX_SENDFILEVECS];
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25 ngx_array_t vec;
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26 ngx_event_t *wev;
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27 ngx_chain_t *cl, *tail;
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28
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29 wev = c->write;
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30
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31 if (!wev->ready) {
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32 return in;
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33 }
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34
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35 send = 0;
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36 complete = 0;
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37
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38 vec.elts = sfvs;
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39 vec.size = sizeof(sendfilevec_t);
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40 vec.nalloc = NGX_SENDFILEVECS;
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41 vec.pool = c->pool;
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42
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43 for ( ;; ) {
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44 fd = SFV_FD_SELF;
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45 prev = NULL;
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46 fprev = 0;
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47 sfv = NULL;
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48 eintr = 0;
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49 sent = 0;
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50 sprev = send;
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51
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52 vec.nelts = 0;
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53
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54 /* create the sendfilevec and coalesce the neighbouring bufs */
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55
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56 for (cl = in; cl && vec.nelts < IOV_MAX && send < limit; cl = cl->next)
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57 {
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58 if (ngx_buf_special(cl->buf)) {
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59 continue;
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60 }
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61
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62 if (ngx_buf_in_memory_only(cl->buf)) {
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63 fd = SFV_FD_SELF;
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64
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65 size = cl->buf->last - cl->buf->pos;
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66
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67 if (send + size > limit) {
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68 size = limit - send;
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69 }
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70
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71 if (prev == cl->buf->pos) {
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72 sfv->sfv_len += size;
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73
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74 } else {
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75 if (!(sfv = ngx_array_push(&vec))) {
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76 return NGX_CHAIN_ERROR;
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77 }
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78
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79 sfv->sfv_fd = SFV_FD_SELF;
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80 sfv->sfv_flag = 0;
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81 sfv->sfv_off = (off_t) (uintptr_t) cl->buf->pos;
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82 sfv->sfv_len = size;
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83 }
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84
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85 prev = cl->buf->pos + size;
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86 send += size;
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87
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88 } else {
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89 prev = NULL;
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90
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91 size = (size_t) (cl->buf->file_last - cl->buf->file_pos);
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92
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93 if (send + size > limit) {
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94 size = limit - send;
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95
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96 aligned = (cl->buf->file_pos + size + ngx_pagesize - 1)
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97 & ~(ngx_pagesize - 1);
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98
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99 if (aligned <= cl->buf->file_last) {
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100 size = aligned - cl->buf->file_pos;
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101 }
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102 }
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103
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104 if (fd == cl->buf->file->fd && fprev == cl->buf->file_pos) {
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105 sfv->sfv_len += size;
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106
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107 } else {
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108 if (!(sfv = ngx_array_push(&vec))) {
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109 return NGX_CHAIN_ERROR;
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110 }
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111
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112 fd = cl->buf->file->fd;
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113 sfv->sfv_fd = fd;
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114 sfv->sfv_flag = 0;
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115 sfv->sfv_off = cl->buf->file_pos;
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116 sfv->sfv_len = size;
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117 }
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118
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119 fprev = cl->buf->file_pos + size;
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120 send += size;
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121 }
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122 }
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123
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124 n = sendfilev(c->fd, vec.elts, vec.nelts, &sent);
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125
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126 if (n == -1) {
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127 err = ngx_errno;
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128
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129 if (err == NGX_EAGAIN || err == NGX_EINTR) {
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130 if (err == NGX_EINTR) {
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131 eintr = 1;
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132 }
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133
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134 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, err,
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135 "sendfilev() sent only " SIZE_T_FMT " bytes",
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136 sent);
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137
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138 } else {
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139 wev->error = 1;
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140 ngx_connection_error(c, err, "sendfilev() failed");
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141 return NGX_CHAIN_ERROR;
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142 }
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143 }
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144
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145 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
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146 "sendfilev: %d " SIZE_T_FMT, n, sent);
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147
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148 if (send - sprev == sent) {
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149 complete = 1;
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150 }
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151
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152 c->sent += sent;
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153
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154 for (cl = in; cl; cl = cl->next) {
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155
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156 if (ngx_buf_special(cl->buf)) {
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157 continue;
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158 }
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159
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160 if (sent == 0) {
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161 break;
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162 }
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163
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164 size = ngx_buf_size(cl->buf);
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165
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166 if (sent >= size) {
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167 sent -= size;
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168
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169 if (ngx_buf_in_memory(cl->buf)) {
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170 cl->buf->pos = cl->buf->last;
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171 }
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172
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173 if (cl->buf->in_file) {
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174 cl->buf->file_pos = cl->buf->file_last;
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175 }
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176
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177 continue;
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178 }
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179
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180 if (ngx_buf_in_memory(cl->buf)) {
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181 cl->buf->pos += sent;
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182 }
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183
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184 if (cl->buf->in_file) {
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185 cl->buf->file_pos += sent;
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186 }
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187
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188 break;
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189 }
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190
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191 if (eintr) {
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192 continue;
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193 }
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194
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195 if (!complete) {
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196 wev->ready = 0;
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197 return cl;
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198 }
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199
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200 if (send >= limit || cl == NULL) {
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201 return cl;
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202 }
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203
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204 in = cl;
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205 }
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206 }
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