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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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146
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34 #if (IOV_MAX > 64)
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35 #define NGX_SENDFILEVECS 64
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36 #else
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37 #define NGX_SENDFILEVECS IOV_MAX
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38 #endif
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39
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0
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40
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41
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134
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42 ngx_chain_t *
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43 ngx_solaris_sendfilev_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
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0
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44 {
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45 int fd;
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46 u_char *prev;
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22
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47 off_t size, send, prev_send, aligned, fprev;
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48 size_t sent;
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49 ssize_t n;
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0
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50 ngx_int_t eintr, complete;
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51 ngx_err_t err;
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52 sendfilevec_t *sfv, sfvs[NGX_SENDFILEVECS];
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53 ngx_array_t vec;
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54 ngx_event_t *wev;
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50
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55 ngx_chain_t *cl;
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0
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56
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57 wev = c->write;
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58
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59 if (!wev->ready) {
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60 return in;
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61 }
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62
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2
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63 if (!c->sendfile) {
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64 return ngx_writev_chain(c, in, limit);
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65 }
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66
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22
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67
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68 /* the maximum limit size is the maximum size_t value - the page size */
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69
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324
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70 if (limit == 0 || limit > (off_t) (NGX_MAX_SIZE_T_VALUE - ngx_pagesize)) {
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26
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71 limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize;
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22
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72 }
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73
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74
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0
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75 send = 0;
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76 complete = 0;
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77
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78 vec.elts = sfvs;
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79 vec.size = sizeof(sendfilevec_t);
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80 vec.nalloc = NGX_SENDFILEVECS;
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81 vec.pool = c->pool;
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82
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83 for ( ;; ) {
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84 fd = SFV_FD_SELF;
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85 prev = NULL;
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86 fprev = 0;
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87 sfv = NULL;
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88 eintr = 0;
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89 sent = 0;
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22
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90 prev_send = send;
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0
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91
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92 vec.nelts = 0;
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93
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94 /* create the sendfilevec and coalesce the neighbouring bufs */
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95
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96 for (cl = in; cl && vec.nelts < IOV_MAX && send < limit; cl = cl->next)
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97 {
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98 if (ngx_buf_special(cl->buf)) {
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99 continue;
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100 }
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101
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102 if (ngx_buf_in_memory_only(cl->buf)) {
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103 fd = SFV_FD_SELF;
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104
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105 size = cl->buf->last - cl->buf->pos;
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106
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107 if (send + size > limit) {
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108 size = limit - send;
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109 }
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110
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111 if (prev == cl->buf->pos) {
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22
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112 sfv->sfv_len += (size_t) size;
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0
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113
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114 } else {
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50
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115 sfv = ngx_array_push(&vec);
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116 if (sfv == NULL) {
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0
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117 return NGX_CHAIN_ERROR;
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118 }
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119
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120 sfv->sfv_fd = SFV_FD_SELF;
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121 sfv->sfv_flag = 0;
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122 sfv->sfv_off = (off_t) (uintptr_t) cl->buf->pos;
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22
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123 sfv->sfv_len = (size_t) size;
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0
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124 }
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125
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22
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126 prev = cl->buf->pos + (size_t) size;
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0
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127 send += size;
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128
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129 } else {
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130 prev = NULL;
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131
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22
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132 size = cl->buf->file_last - cl->buf->file_pos;
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0
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133
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134 if (send + size > limit) {
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135 size = limit - send;
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136
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137 aligned = (cl->buf->file_pos + size + ngx_pagesize - 1)
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298
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138 & ~((off_t) ngx_pagesize - 1);
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0
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139
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140 if (aligned <= cl->buf->file_last) {
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141 size = aligned - cl->buf->file_pos;
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142 }
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143 }
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144
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145 if (fd == cl->buf->file->fd && fprev == cl->buf->file_pos) {
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22
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146 sfv->sfv_len += (size_t) size;
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0
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147
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148 } else {
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50
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149 sfv = ngx_array_push(&vec);
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150 if (sfv == NULL) {
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0
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151 return NGX_CHAIN_ERROR;
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152 }
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153
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154 fd = cl->buf->file->fd;
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155 sfv->sfv_fd = fd;
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156 sfv->sfv_flag = 0;
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157 sfv->sfv_off = cl->buf->file_pos;
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22
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158 sfv->sfv_len = (size_t) size;
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0
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159 }
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160
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161 fprev = cl->buf->file_pos + size;
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162 send += size;
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163 }
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164 }
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165
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166 n = sendfilev(c->fd, vec.elts, vec.nelts, &sent);
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167
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168 if (n == -1) {
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169 err = ngx_errno;
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170
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171 if (err == NGX_EAGAIN || err == NGX_EINTR) {
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172 if (err == NGX_EINTR) {
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173 eintr = 1;
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174 }
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175
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176 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, err,
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22
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177 "sendfilev() sent only %uz bytes", sent);
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0
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178
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179 } else {
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180 wev->error = 1;
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181 ngx_connection_error(c, err, "sendfilev() failed");
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182 return NGX_CHAIN_ERROR;
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183 }
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184 }
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185
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186 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
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10
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187 "sendfilev: %z %z", n, sent);
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0
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188
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22
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189 if (send - prev_send == (off_t) sent) {
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0
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190 complete = 1;
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191 }
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192
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193 c->sent += sent;
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194
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195 for (cl = in; cl; cl = cl->next) {
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196
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197 if (ngx_buf_special(cl->buf)) {
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126
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198 continue;
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0
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199 }
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200
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201 if (sent == 0) {
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202 break;
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203 }
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204
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205 size = ngx_buf_size(cl->buf);
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206
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22
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207 if ((off_t) sent >= size) {
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208 sent = (size_t) ((off_t) sent - size);
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0
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209
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210 if (ngx_buf_in_memory(cl->buf)) {
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211 cl->buf->pos = cl->buf->last;
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212 }
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213
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214 if (cl->buf->in_file) {
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215 cl->buf->file_pos = cl->buf->file_last;
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216 }
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217
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218 continue;
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219 }
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220
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221 if (ngx_buf_in_memory(cl->buf)) {
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222 cl->buf->pos += sent;
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223 }
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224
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225 if (cl->buf->in_file) {
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226 cl->buf->file_pos += sent;
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227 }
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228
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229 break;
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230 }
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231
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232 if (eintr) {
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233 continue;
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234 }
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235
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236 if (!complete) {
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237 wev->ready = 0;
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238 return cl;
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239 }
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240
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241 if (send >= limit || cl == NULL) {
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242 return cl;
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243 }
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244
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245 in = cl;
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246 }
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247 }
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