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