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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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660
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4 * Copyright (C) Nginx, Inc.
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0
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_event.h>
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11
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12
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22
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13 #if (NGX_TEST_BUILD_SOLARIS_SENDFILEV)
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14
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15 /* Solaris declarations */
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16
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17 typedef struct sendfilevec {
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18 int sfv_fd;
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19 u_int sfv_flag;
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20 off_t sfv_off;
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21 size_t sfv_len;
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22 } sendfilevec_t;
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23
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24 #define SFV_FD_SELF -2
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25
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26 static ssize_t sendfilev(int fd, const struct sendfilevec *vec,
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134
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27 int sfvcnt, size_t *xferred)
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22
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28 {
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29 return -1;
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30 }
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31
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682
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32 ngx_chain_t *ngx_solaris_sendfilev_chain(ngx_connection_t *c, ngx_chain_t *in,
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33 off_t limit);
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34
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22
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35 #endif
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36
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37
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146
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38 #if (IOV_MAX > 64)
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39 #define NGX_SENDFILEVECS 64
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40 #else
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41 #define NGX_SENDFILEVECS IOV_MAX
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42 #endif
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43
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0
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44
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45
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134
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46 ngx_chain_t *
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47 ngx_solaris_sendfilev_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
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0
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48 {
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49 int fd;
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50 u_char *prev;
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22
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51 off_t size, send, prev_send, aligned, fprev;
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52 size_t sent;
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53 ssize_t n;
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0
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54 ngx_int_t eintr, complete;
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55 ngx_err_t err;
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56 sendfilevec_t *sfv, sfvs[NGX_SENDFILEVECS];
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57 ngx_array_t vec;
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58 ngx_event_t *wev;
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50
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59 ngx_chain_t *cl;
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0
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60
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61 wev = c->write;
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62
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63 if (!wev->ready) {
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64 return in;
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65 }
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66
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2
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67 if (!c->sendfile) {
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68 return ngx_writev_chain(c, in, limit);
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69 }
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70
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22
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71
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72 /* the maximum limit size is the maximum size_t value - the page size */
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73
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324
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74 if (limit == 0 || limit > (off_t) (NGX_MAX_SIZE_T_VALUE - ngx_pagesize)) {
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26
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75 limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize;
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22
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76 }
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77
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78
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0
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79 send = 0;
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80
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81 vec.elts = sfvs;
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82 vec.size = sizeof(sendfilevec_t);
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83 vec.nalloc = NGX_SENDFILEVECS;
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84 vec.pool = c->pool;
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85
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86 for ( ;; ) {
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87 fd = SFV_FD_SELF;
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88 prev = NULL;
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89 fprev = 0;
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90 sfv = NULL;
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91 eintr = 0;
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672
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92 complete = 0;
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0
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93 sent = 0;
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22
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94 prev_send = send;
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0
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95
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96 vec.nelts = 0;
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97
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98 /* create the sendfilevec and coalesce the neighbouring bufs */
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99
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672
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100 for (cl = in; cl && send < limit; cl = cl->next) {
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101
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0
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102 if (ngx_buf_special(cl->buf)) {
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103 continue;
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104 }
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105
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106 if (ngx_buf_in_memory_only(cl->buf)) {
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107 fd = SFV_FD_SELF;
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108
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109 size = cl->buf->last - cl->buf->pos;
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110
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111 if (send + size > limit) {
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112 size = limit - send;
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113 }
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114
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115 if (prev == cl->buf->pos) {
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22
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116 sfv->sfv_len += (size_t) size;
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0
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117
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118 } else {
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672
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119 if (vec.nelts >= IOV_MAX) {
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120 break;
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121 }
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122
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50
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123 sfv = ngx_array_push(&vec);
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124 if (sfv == NULL) {
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0
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125 return NGX_CHAIN_ERROR;
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126 }
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127
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128 sfv->sfv_fd = SFV_FD_SELF;
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129 sfv->sfv_flag = 0;
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130 sfv->sfv_off = (off_t) (uintptr_t) cl->buf->pos;
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22
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131 sfv->sfv_len = (size_t) size;
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0
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132 }
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133
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22
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134 prev = cl->buf->pos + (size_t) size;
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0
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135 send += size;
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136
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137 } else {
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138 prev = NULL;
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139
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22
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140 size = cl->buf->file_last - cl->buf->file_pos;
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0
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141
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142 if (send + size > limit) {
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143 size = limit - send;
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144
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145 aligned = (cl->buf->file_pos + size + ngx_pagesize - 1)
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298
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146 & ~((off_t) ngx_pagesize - 1);
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0
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147
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148 if (aligned <= cl->buf->file_last) {
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149 size = aligned - cl->buf->file_pos;
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150 }
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151 }
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152
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153 if (fd == cl->buf->file->fd && fprev == cl->buf->file_pos) {
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22
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154 sfv->sfv_len += (size_t) size;
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0
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155
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156 } else {
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672
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157 if (vec.nelts >= IOV_MAX) {
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158 break;
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159 }
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160
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50
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161 sfv = ngx_array_push(&vec);
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162 if (sfv == NULL) {
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0
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163 return NGX_CHAIN_ERROR;
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164 }
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165
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166 fd = cl->buf->file->fd;
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167 sfv->sfv_fd = fd;
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168 sfv->sfv_flag = 0;
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169 sfv->sfv_off = cl->buf->file_pos;
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22
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170 sfv->sfv_len = (size_t) size;
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0
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171 }
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172
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173 fprev = cl->buf->file_pos + size;
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174 send += size;
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175 }
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176 }
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177
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178 n = sendfilev(c->fd, vec.elts, vec.nelts, &sent);
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179
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180 if (n == -1) {
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181 err = ngx_errno;
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182
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520
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183 switch (err) {
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184 case NGX_EAGAIN:
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185 break;
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0
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186
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520
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187 case NGX_EINTR:
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188 eintr = 1;
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189 break;
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0
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190
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520
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191 default:
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0
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192 wev->error = 1;
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193 ngx_connection_error(c, err, "sendfilev() failed");
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194 return NGX_CHAIN_ERROR;
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195 }
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520
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196
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197 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, err,
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198 "sendfilev() sent only %uz bytes", sent);
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0
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199 }
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200
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201 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
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10
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202 "sendfilev: %z %z", n, sent);
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0
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203
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22
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204 if (send - prev_send == (off_t) sent) {
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0
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205 complete = 1;
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206 }
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207
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208 c->sent += sent;
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209
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210 for (cl = in; cl; cl = cl->next) {
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211
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212 if (ngx_buf_special(cl->buf)) {
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126
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213 continue;
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0
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214 }
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215
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216 if (sent == 0) {
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217 break;
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218 }
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219
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220 size = ngx_buf_size(cl->buf);
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221
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22
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222 if ((off_t) sent >= size) {
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223 sent = (size_t) ((off_t) sent - size);
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0
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224
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225 if (ngx_buf_in_memory(cl->buf)) {
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226 cl->buf->pos = cl->buf->last;
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227 }
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228
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229 if (cl->buf->in_file) {
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230 cl->buf->file_pos = cl->buf->file_last;
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231 }
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232
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233 continue;
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234 }
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235
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236 if (ngx_buf_in_memory(cl->buf)) {
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237 cl->buf->pos += sent;
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238 }
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239
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240 if (cl->buf->in_file) {
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241 cl->buf->file_pos += sent;
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242 }
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243
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244 break;
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245 }
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246
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247 if (eintr) {
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248 continue;
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249 }
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250
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251 if (!complete) {
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252 wev->ready = 0;
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253 return cl;
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254 }
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255
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256 if (send >= limit || cl == NULL) {
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257 return cl;
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258 }
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259
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260 in = cl;
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261 }
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262 }
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