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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 #include <ngx_event_pipe.h>
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11
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12
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13 static ngx_int_t ngx_event_pipe_read_upstream(ngx_event_pipe_t *p);
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14 static ngx_int_t ngx_event_pipe_write_to_downstream(ngx_event_pipe_t *p);
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15
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16 static ngx_int_t ngx_event_pipe_write_chain_to_temp_file(ngx_event_pipe_t *p);
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16
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17 static ngx_inline void ngx_event_pipe_remove_shadow_links(ngx_buf_t *buf);
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18 static ngx_inline void ngx_event_pipe_free_shadow_raw_buf(ngx_chain_t **free,
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0
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19 ngx_buf_t *buf);
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20 static ngx_int_t ngx_event_pipe_drain_chains(ngx_event_pipe_t *p);
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21
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22
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126
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23 ngx_int_t
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344
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24 ngx_event_pipe(ngx_event_pipe_t *p, ngx_int_t do_write)
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0
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25 {
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26 u_int flags;
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27 ngx_event_t *rev, *wev;
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28
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29 for ( ;; ) {
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30 if (do_write) {
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32
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31 p->log->action = "sending to client";
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32
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0
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33 if (ngx_event_pipe_write_to_downstream(p) == NGX_ABORT) {
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34 return NGX_ABORT;
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35 }
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36 }
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37
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38 p->read = 0;
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39 p->upstream_blocked = 0;
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40
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32
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41 p->log->action = "reading upstream";
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42
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0
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43 if (ngx_event_pipe_read_upstream(p) == NGX_ABORT) {
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44 return NGX_ABORT;
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45 }
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46
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47 if (!p->read && !p->upstream_blocked) {
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48 break;
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49 }
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50
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51 do_write = 1;
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52 }
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53
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54 if (p->upstream->fd != -1) {
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55 rev = p->upstream->read;
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56
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57 flags = (rev->eof || rev->error) ? NGX_CLOSE_EVENT : 0;
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58
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430
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59 if (ngx_handle_read_event(rev, flags) != NGX_OK) {
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0
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60 return NGX_ABORT;
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61 }
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62
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162
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63 if (rev->active && !rev->ready) {
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0
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64 ngx_add_timer(rev, p->read_timeout);
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162
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65
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66 } else if (rev->timer_set) {
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67 ngx_del_timer(rev);
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0
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68 }
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69 }
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70
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58
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71 if (p->downstream->fd != -1 && p->downstream->data == p->output_ctx) {
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0
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72 wev = p->downstream->write;
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430
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73 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
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0
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74 return NGX_ABORT;
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75 }
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76
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162
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77 if (!wev->delayed) {
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78 if (wev->active && !wev->ready) {
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79 ngx_add_timer(wev, p->send_timeout);
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80
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81 } else if (wev->timer_set) {
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82 ngx_del_timer(wev);
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83 }
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0
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84 }
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85 }
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86
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87 return NGX_OK;
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88 }
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89
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90
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126
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91 static ngx_int_t
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92 ngx_event_pipe_read_upstream(ngx_event_pipe_t *p)
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0
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93 {
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10
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94 ssize_t n, size;
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95 ngx_int_t rc;
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0
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96 ngx_buf_t *b;
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56
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97 ngx_chain_t *chain, *cl, *ln;
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0
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98
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99 if (p->upstream_eof || p->upstream_error || p->upstream_done) {
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100 return NGX_OK;
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101 }
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102
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103 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
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104 "pipe read upstream: %d", p->upstream->read->ready);
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105
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106 for ( ;; ) {
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107
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108 if (p->upstream_eof || p->upstream_error || p->upstream_done) {
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109 break;
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110 }
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111
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112 if (p->preread_bufs == NULL && !p->upstream->read->ready) {
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113 break;
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114 }
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115
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116 if (p->preread_bufs) {
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117
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118 /* use the pre-read bufs if they exist */
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119
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120 chain = p->preread_bufs;
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121 p->preread_bufs = NULL;
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122 n = p->preread_size;
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123
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124 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
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10
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125 "pipe preread: %z", n);
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0
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126
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127 if (n) {
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128 p->read = 1;
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129 }
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130
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131 } else {
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132
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130
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133 #if (NGX_HAVE_KQUEUE)
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134
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0
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135 /*
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136 * kqueue notifies about the end of file or a pending error.
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137 * This test allows not to allocate a buf on these conditions
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126
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138 * and not to call c->recv_chain().
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0
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139 */
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140
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141 if (p->upstream->read->available == 0
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136
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142 && p->upstream->read->pending_eof)
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0
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143 {
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144 p->upstream->read->ready = 0;
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145 p->upstream->read->eof = 0;
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146 p->upstream_eof = 1;
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147 p->read = 1;
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148
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149 if (p->upstream->read->kq_errno) {
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150 p->upstream->read->error = 1;
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151 p->upstream_error = 1;
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152 p->upstream_eof = 0;
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153
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154 ngx_log_error(NGX_LOG_ERR, p->log,
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155 p->upstream->read->kq_errno,
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130
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156 "kevent() reported that upstream "
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157 "closed connection");
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0
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158 }
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159
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160 break;
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161 }
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130
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162 #endif
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0
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163
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164 if (p->free_raw_bufs) {
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165
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166 /* use the free bufs if they exist */
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167
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168 chain = p->free_raw_bufs;
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169 if (p->single_buf) {
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170 p->free_raw_bufs = p->free_raw_bufs->next;
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171 chain->next = NULL;
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172 } else {
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173 p->free_raw_bufs = NULL;
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174 }
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175
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176 } else if (p->allocated < p->bufs.num) {
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177
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178 /* allocate a new buf if it's still allowed */
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179
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50
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180 b = ngx_create_temp_buf(p->pool, p->bufs.size);
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181 if (b == NULL) {
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0
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182 return NGX_ABORT;
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183 }
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184
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185 p->allocated++;
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186
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50
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187 chain = ngx_alloc_chain_link(p->pool);
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188 if (chain == NULL) {
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32
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189 return NGX_ABORT;
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190 }
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191
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192 chain->buf = b;
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193 chain->next = NULL;
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0
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194
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340
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195 } else if (!p->cacheable
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58
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196 && p->downstream->data == p->output_ctx
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76
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197 && p->downstream->write->ready
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198 && !p->downstream->write->delayed)
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58
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199 {
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0
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200 /*
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201 * if the bufs are not needed to be saved in a cache and
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202 * a downstream is ready then write the bufs to a downstream
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203 */
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204
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205 p->upstream_blocked = 1;
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206
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207 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
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208 "pipe downstream ready");
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209
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210 break;
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211
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340
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212 } else if (p->cacheable
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0
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213 || p->temp_file->offset < p->max_temp_file_size)
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214 {
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215
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216 /*
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32
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217 * if it is allowed, then save some bufs from r->in
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0
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218 * to a temporary file, and add them to a r->out chain
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219 */
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220
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221 rc = ngx_event_pipe_write_chain_to_temp_file(p);
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222
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223 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
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10
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224 "pipe temp offset: %O", p->temp_file->offset);
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0
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225
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70
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226 if (rc == NGX_BUSY) {
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227 break;
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228 }
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229
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0
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230 if (rc == NGX_AGAIN) {
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231 if (ngx_event_flags & NGX_USE_LEVEL_EVENT
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232 && p->upstream->read->active
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233 && p->upstream->read->ready)
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234 {
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235 if (ngx_del_event(p->upstream->read, NGX_READ_EVENT, 0)
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126
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236 == NGX_ERROR)
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0
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237 {
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238 return NGX_ABORT;
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239 }
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240 }
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241 }
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242
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243 if (rc != NGX_OK) {
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244 return rc;
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245 }
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246
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247 chain = p->free_raw_bufs;
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248 if (p->single_buf) {
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249 p->free_raw_bufs = p->free_raw_bufs->next;
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250 chain->next = NULL;
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251 } else {
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252 p->free_raw_bufs = NULL;
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253 }
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254
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255 } else {
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256
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32
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257 /* there are no bufs to read in */
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0
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258
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259 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
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260 "no pipe bufs to read in");
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126
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261
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0
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262 break;
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263 }
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264
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126
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265 n = p->upstream->recv_chain(p->upstream, chain);
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0
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266
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267 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
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10
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268 "pipe recv chain: %z", n);
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0
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269
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270 if (p->free_raw_bufs) {
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271 chain->next = p->free_raw_bufs;
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272 }
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273 p->free_raw_bufs = chain;
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274
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275 if (n == NGX_ERROR) {
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276 p->upstream_error = 1;
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277 return NGX_ERROR;
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278 }
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279
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280 if (n == NGX_AGAIN) {
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281 if (p->single_buf) {
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282 ngx_event_pipe_remove_shadow_links(chain->buf);
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283 }
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284
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285 break;
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286 }
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287
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288 p->read = 1;
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289
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290 if (n == 0) {
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291 p->upstream_eof = 1;
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292 break;
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293 }
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294 }
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295
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296 p->read_length += n;
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297 cl = chain;
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258
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298 p->free_raw_bufs = NULL;
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0
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299
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300 while (cl && n > 0) {
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301
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302 ngx_event_pipe_remove_shadow_links(cl->buf);
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303
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304 size = cl->buf->end - cl->buf->last;
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305
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306 if (n >= size) {
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307 cl->buf->last = cl->buf->end;
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308
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309 /* STUB */ cl->buf->num = p->num++;
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310
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311 if (p->input_filter(p, cl->buf) == NGX_ERROR) {
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312 return NGX_ABORT;
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313 }
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314
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315 n -= size;
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56
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316 ln = cl;
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0
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317 cl = cl->next;
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56
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318 ngx_free_chain(p->pool, ln);
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0
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319
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320 } else {
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321 cl->buf->last += n;
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322 n = 0;
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323 }
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324 }
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325
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258
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326 if (cl) {
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327 for (ln = cl; ln->next; ln = ln->next) { /* void */ }
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328
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329 ln->next = p->free_raw_bufs;
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330 p->free_raw_bufs = cl;
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331 }
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0
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332 }
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333
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334 #if (NGX_DEBUG)
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335
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2
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336 for (cl = p->busy; cl; cl = cl->next) {
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32
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337 ngx_log_debug8(NGX_LOG_DEBUG_EVENT, p->log, 0,
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338 "pipe buf busy s:%d t:%d f:%d "
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339 "%p, pos %p, size: %z "
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340 "file: %O, size: %z",
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341 (cl->buf->shadow ? 1 : 0),
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342 cl->buf->temporary, cl->buf->in_file,
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0
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343 cl->buf->start, cl->buf->pos,
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32
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344 cl->buf->last - cl->buf->pos,
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345 cl->buf->file_pos,
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346 cl->buf->file_last - cl->buf->file_pos);
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0
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347 }
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348
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2
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349 for (cl = p->out; cl; cl = cl->next) {
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32
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350 ngx_log_debug8(NGX_LOG_DEBUG_EVENT, p->log, 0,
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351 "pipe buf out s:%d t:%d f:%d "
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352 "%p, pos %p, size: %z "
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353 "file: %O, size: %z",
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354 (cl->buf->shadow ? 1 : 0),
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355 cl->buf->temporary, cl->buf->in_file,
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356 cl->buf->start, cl->buf->pos,
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357 cl->buf->last - cl->buf->pos,
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358 cl->buf->file_pos,
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359 cl->buf->file_last - cl->buf->file_pos);
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2
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360 }
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361
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362 for (cl = p->in; cl; cl = cl->next) {
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32
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363 ngx_log_debug8(NGX_LOG_DEBUG_EVENT, p->log, 0,
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364 "pipe buf in s:%d t:%d f:%d "
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365 "%p, pos %p, size: %z "
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366 "file: %O, size: %z",
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367 (cl->buf->shadow ? 1 : 0),
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368 cl->buf->temporary, cl->buf->in_file,
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0
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369 cl->buf->start, cl->buf->pos,
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32
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370 cl->buf->last - cl->buf->pos,
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371 cl->buf->file_pos,
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372 cl->buf->file_last - cl->buf->file_pos);
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0
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373 }
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374
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375 for (cl = p->free_raw_bufs; cl; cl = cl->next) {
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32
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376 ngx_log_debug8(NGX_LOG_DEBUG_EVENT, p->log, 0,
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377 "pipe buf free s:%d t:%d f:%d "
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378 "%p, pos %p, size: %z "
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379 "file: %O, size: %z",
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380 (cl->buf->shadow ? 1 : 0),
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381 cl->buf->temporary, cl->buf->in_file,
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382 cl->buf->start, cl->buf->pos,
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383 cl->buf->last - cl->buf->pos,
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384 cl->buf->file_pos,
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385 cl->buf->file_last - cl->buf->file_pos);
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0
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386 }
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387
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388 #endif
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389
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|
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390 if ((p->upstream_eof || p->upstream_error) && p->free_raw_bufs) {
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391
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392 /* STUB */ p->free_raw_bufs->buf->num = p->num++;
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393
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394 if (p->input_filter(p, p->free_raw_bufs->buf) == NGX_ERROR) {
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395 return NGX_ABORT;
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396 }
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397
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398 p->free_raw_bufs = p->free_raw_bufs->next;
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399
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|
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400 if (p->free_bufs) {
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401 for (cl = p->free_raw_bufs; cl; cl = cl->next) {
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2
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402 if (cl->buf->shadow == NULL) {
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126
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403 ngx_pfree(p->pool, cl->buf->start);
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|
2
|
404 }
|
|
0
|
405 }
|
|
|
406 }
|
|
|
407 }
|
|
|
408
|
|
340
|
409 if (p->cacheable && p->in) {
|
|
0
|
410 if (ngx_event_pipe_write_chain_to_temp_file(p) == NGX_ABORT) {
|
|
|
411 return NGX_ABORT;
|
|
|
412 }
|
|
|
413 }
|
|
|
414
|
|
|
415 return NGX_OK;
|
|
|
416 }
|
|
|
417
|
|
|
418
|
|
126
|
419 static ngx_int_t
|
|
|
420 ngx_event_pipe_write_to_downstream(ngx_event_pipe_t *p)
|
|
0
|
421 {
|
|
284
|
422 u_char *prev;
|
|
132
|
423 size_t bsize;
|
|
346
|
424 ngx_int_t rc;
|
|
276
|
425 ngx_uint_t flush, prev_last_shadow;
|
|
464
|
426 ngx_chain_t *out, **ll, *cl, file;
|
|
132
|
427 ngx_connection_t *downstream;
|
|
|
428
|
|
|
429 downstream = p->downstream;
|
|
0
|
430
|
|
|
431 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
132
|
432 "pipe write downstream: %d", downstream->write->ready);
|
|
0
|
433
|
|
|
434 for ( ;; ) {
|
|
|
435 if (p->downstream_error) {
|
|
|
436 return ngx_event_pipe_drain_chains(p);
|
|
|
437 }
|
|
|
438
|
|
|
439 if (p->upstream_eof || p->upstream_error || p->upstream_done) {
|
|
|
440
|
|
|
441 /* pass the p->out and p->in chains to the output filter */
|
|
|
442
|
|
58
|
443 for (cl = p->busy; cl; cl = cl->next) {
|
|
|
444 cl->buf->recycled = 0;
|
|
|
445 }
|
|
|
446
|
|
0
|
447 if (p->out) {
|
|
|
448 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
449 "pipe write downstream flush out");
|
|
|
450
|
|
58
|
451 for (cl = p->out; cl; cl = cl->next) {
|
|
|
452 cl->buf->recycled = 0;
|
|
|
453 }
|
|
|
454
|
|
346
|
455 rc = p->output_filter(p->output_ctx, p->out);
|
|
|
456
|
|
|
457 if (downstream->destroyed) {
|
|
|
458 return NGX_ABORT;
|
|
|
459 }
|
|
|
460
|
|
|
461 if (rc == NGX_ERROR) {
|
|
0
|
462 p->downstream_error = 1;
|
|
|
463 return ngx_event_pipe_drain_chains(p);
|
|
|
464 }
|
|
|
465
|
|
|
466 p->out = NULL;
|
|
|
467 }
|
|
|
468
|
|
|
469 if (p->in) {
|
|
|
470 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
471 "pipe write downstream flush in");
|
|
|
472
|
|
58
|
473 for (cl = p->in; cl; cl = cl->next) {
|
|
|
474 cl->buf->recycled = 0;
|
|
|
475 }
|
|
|
476
|
|
346
|
477 rc = p->output_filter(p->output_ctx, p->in);
|
|
132
|
478
|
|
346
|
479 if (downstream->destroyed) {
|
|
|
480 return NGX_ABORT;
|
|
|
481 }
|
|
132
|
482
|
|
346
|
483 if (rc == NGX_ERROR) {
|
|
0
|
484 p->downstream_error = 1;
|
|
|
485 return ngx_event_pipe_drain_chains(p);
|
|
|
486 }
|
|
|
487
|
|
|
488 p->in = NULL;
|
|
|
489 }
|
|
|
490
|
|
464
|
491 if (p->cacheable && p->buf_to_file) {
|
|
|
492
|
|
|
493 file.buf = p->buf_to_file;
|
|
|
494 file.next = NULL;
|
|
|
495
|
|
|
496 if (ngx_write_chain_to_temp_file(p->temp_file, &file)
|
|
|
497 == NGX_ERROR)
|
|
|
498 {
|
|
|
499 return NGX_ABORT;
|
|
|
500 }
|
|
|
501 }
|
|
|
502
|
|
0
|
503 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
504 "pipe write downstream done");
|
|
|
505
|
|
|
506 /* TODO: free unused bufs */
|
|
|
507
|
|
|
508 p->downstream_done = 1;
|
|
|
509 break;
|
|
|
510 }
|
|
|
511
|
|
132
|
512 if (downstream->data != p->output_ctx
|
|
|
513 || !downstream->write->ready
|
|
|
514 || downstream->write->delayed)
|
|
58
|
515 {
|
|
0
|
516 break;
|
|
|
517 }
|
|
|
518
|
|
28
|
519 /* bsize is the size of the busy recycled bufs */
|
|
0
|
520
|
|
284
|
521 prev = NULL;
|
|
0
|
522 bsize = 0;
|
|
|
523
|
|
|
524 for (cl = p->busy; cl; cl = cl->next) {
|
|
284
|
525
|
|
28
|
526 if (cl->buf->recycled) {
|
|
284
|
527 if (prev == cl->buf->start) {
|
|
|
528 continue;
|
|
|
529 }
|
|
|
530
|
|
28
|
531 bsize += cl->buf->end - cl->buf->start;
|
|
284
|
532 prev = cl->buf->start;
|
|
28
|
533 }
|
|
0
|
534 }
|
|
|
535
|
|
|
536 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
28
|
537 "pipe write busy: %uz", bsize);
|
|
0
|
538
|
|
|
539 out = NULL;
|
|
284
|
540
|
|
|
541 if (bsize >= (size_t) p->busy_size) {
|
|
|
542 flush = 1;
|
|
|
543 goto flush;
|
|
|
544 }
|
|
|
545
|
|
|
546 flush = 0;
|
|
0
|
547 ll = NULL;
|
|
276
|
548 prev_last_shadow = 1;
|
|
0
|
549
|
|
|
550 for ( ;; ) {
|
|
|
551 if (p->out) {
|
|
|
552 cl = p->out;
|
|
|
553
|
|
28
|
554 if (cl->buf->recycled
|
|
|
555 && bsize + cl->buf->last - cl->buf->pos > p->busy_size)
|
|
|
556 {
|
|
0
|
557 flush = 1;
|
|
|
558 break;
|
|
|
559 }
|
|
|
560
|
|
|
561 p->out = p->out->next;
|
|
28
|
562
|
|
|
563 ngx_event_pipe_free_shadow_raw_buf(&p->free_raw_bufs, cl->buf);
|
|
0
|
564
|
|
340
|
565 } else if (!p->cacheable && p->in) {
|
|
0
|
566 cl = p->in;
|
|
|
567
|
|
274
|
568 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
569 "pipe write buf ls:%d %p %z",
|
|
|
570 cl->buf->last_shadow,
|
|
|
571 cl->buf->pos,
|
|
|
572 cl->buf->last - cl->buf->pos);
|
|
|
573
|
|
28
|
574 if (cl->buf->recycled
|
|
256
|
575 && cl->buf->last_shadow
|
|
28
|
576 && bsize + cl->buf->last - cl->buf->pos > p->busy_size)
|
|
|
577 {
|
|
276
|
578 if (!prev_last_shadow) {
|
|
|
579 p->in = p->in->next;
|
|
|
580
|
|
|
581 cl->next = NULL;
|
|
|
582
|
|
|
583 if (out) {
|
|
|
584 *ll = cl;
|
|
|
585 } else {
|
|
|
586 out = cl;
|
|
|
587 }
|
|
|
588 }
|
|
|
589
|
|
0
|
590 flush = 1;
|
|
|
591 break;
|
|
|
592 }
|
|
|
593
|
|
276
|
594 prev_last_shadow = cl->buf->last_shadow;
|
|
|
595
|
|
0
|
596 p->in = p->in->next;
|
|
|
597
|
|
|
598 } else {
|
|
|
599 break;
|
|
|
600 }
|
|
|
601
|
|
28
|
602 if (cl->buf->recycled) {
|
|
|
603 bsize += cl->buf->last - cl->buf->pos;
|
|
|
604 }
|
|
|
605
|
|
0
|
606 cl->next = NULL;
|
|
50
|
607
|
|
|
608 if (out) {
|
|
|
609 *ll = cl;
|
|
|
610 } else {
|
|
|
611 out = cl;
|
|
|
612 }
|
|
|
613 ll = &cl->next;
|
|
0
|
614 }
|
|
|
615
|
|
284
|
616 flush:
|
|
|
617
|
|
0
|
618 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
10
|
619 "pipe write: out:%p, f:%d", out, flush);
|
|
0
|
620
|
|
|
621 if (out == NULL && !flush) {
|
|
|
622 break;
|
|
|
623 }
|
|
|
624
|
|
346
|
625 rc = p->output_filter(p->output_ctx, out);
|
|
|
626
|
|
|
627 if (downstream->destroyed) {
|
|
|
628 return NGX_ABORT;
|
|
|
629 }
|
|
|
630
|
|
|
631 if (rc == NGX_ERROR) {
|
|
0
|
632 p->downstream_error = 1;
|
|
|
633 return ngx_event_pipe_drain_chains(p);
|
|
|
634 }
|
|
|
635
|
|
|
636 ngx_chain_update_chains(&p->free, &p->busy, &out, p->tag);
|
|
|
637
|
|
|
638 for (cl = p->free; cl; cl = cl->next) {
|
|
|
639
|
|
|
640 if (cl->buf->temp_file) {
|
|
340
|
641 if (p->cacheable || !p->cyclic_temp_file) {
|
|
0
|
642 continue;
|
|
|
643 }
|
|
|
644
|
|
|
645 /* reset p->temp_offset if all bufs had been sent */
|
|
|
646
|
|
|
647 if (cl->buf->file_last == p->temp_file->offset) {
|
|
|
648 p->temp_file->offset = 0;
|
|
|
649 }
|
|
|
650 }
|
|
|
651
|
|
|
652 /* TODO: free buf if p->free_bufs && upstream done */
|
|
|
653
|
|
|
654 /* add the free shadow raw buf to p->free_raw_bufs */
|
|
|
655
|
|
|
656 if (cl->buf->last_shadow) {
|
|
32
|
657 if (ngx_event_pipe_add_free_buf(p, cl->buf->shadow) != NGX_OK) {
|
|
|
658 return NGX_ABORT;
|
|
|
659 }
|
|
0
|
660
|
|
|
661 cl->buf->last_shadow = 0;
|
|
|
662 }
|
|
|
663
|
|
|
664 cl->buf->shadow = NULL;
|
|
|
665 }
|
|
|
666 }
|
|
|
667
|
|
|
668 return NGX_OK;
|
|
|
669 }
|
|
|
670
|
|
|
671
|
|
126
|
672 static ngx_int_t
|
|
|
673 ngx_event_pipe_write_chain_to_temp_file(ngx_event_pipe_t *p)
|
|
0
|
674 {
|
|
|
675 ssize_t size, bsize;
|
|
|
676 ngx_buf_t *b;
|
|
|
677 ngx_chain_t *cl, *tl, *next, *out, **ll, **last_free, fl;
|
|
|
678
|
|
|
679 if (p->buf_to_file) {
|
|
|
680 fl.buf = p->buf_to_file;
|
|
|
681 fl.next = p->in;
|
|
|
682 out = &fl;
|
|
|
683
|
|
|
684 } else {
|
|
|
685 out = p->in;
|
|
|
686 }
|
|
|
687
|
|
340
|
688 if (!p->cacheable) {
|
|
0
|
689
|
|
|
690 size = 0;
|
|
|
691 cl = out;
|
|
|
692 ll = NULL;
|
|
|
693
|
|
|
694 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
10
|
695 "pipe offset: %O", p->temp_file->offset);
|
|
0
|
696
|
|
|
697 do {
|
|
|
698 bsize = cl->buf->last - cl->buf->pos;
|
|
|
699
|
|
|
700 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
10
|
701 "pipe buf %p, pos %p, size: %z",
|
|
0
|
702 cl->buf->start, cl->buf->pos, bsize);
|
|
|
703
|
|
|
704 if ((size + bsize > p->temp_file_write_size)
|
|
|
705 || (p->temp_file->offset + size + bsize > p->max_temp_file_size))
|
|
|
706 {
|
|
|
707 break;
|
|
|
708 }
|
|
|
709
|
|
|
710 size += bsize;
|
|
|
711 ll = &cl->next;
|
|
|
712 cl = cl->next;
|
|
|
713
|
|
|
714 } while (cl);
|
|
|
715
|
|
10
|
716 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0, "size: %z", size);
|
|
0
|
717
|
|
70
|
718 if (ll == NULL) {
|
|
|
719 return NGX_BUSY;
|
|
|
720 }
|
|
|
721
|
|
0
|
722 if (cl) {
|
|
|
723 p->in = cl;
|
|
|
724 *ll = NULL;
|
|
|
725
|
|
|
726 } else {
|
|
|
727 p->in = NULL;
|
|
|
728 p->last_in = &p->in;
|
|
|
729 }
|
|
|
730
|
|
|
731 } else {
|
|
|
732 p->in = NULL;
|
|
|
733 p->last_in = &p->in;
|
|
|
734 }
|
|
|
735
|
|
|
736 if (ngx_write_chain_to_temp_file(p->temp_file, out) == NGX_ERROR) {
|
|
|
737 return NGX_ABORT;
|
|
|
738 }
|
|
|
739
|
|
|
740 for (last_free = &p->free_raw_bufs;
|
|
|
741 *last_free != NULL;
|
|
|
742 last_free = &(*last_free)->next)
|
|
|
743 {
|
|
|
744 /* void */
|
|
|
745 }
|
|
|
746
|
|
|
747 if (p->buf_to_file) {
|
|
|
748 p->temp_file->offset = p->buf_to_file->last - p->buf_to_file->pos;
|
|
|
749 p->buf_to_file = NULL;
|
|
|
750 out = out->next;
|
|
|
751 }
|
|
|
752
|
|
|
753 for (cl = out; cl; cl = next) {
|
|
|
754 next = cl->next;
|
|
|
755 cl->next = NULL;
|
|
|
756
|
|
|
757 b = cl->buf;
|
|
|
758 b->file = &p->temp_file->file;
|
|
|
759 b->file_pos = p->temp_file->offset;
|
|
|
760 p->temp_file->offset += b->last - b->pos;
|
|
|
761 b->file_last = p->temp_file->offset;
|
|
|
762
|
|
|
763 b->in_file = 1;
|
|
|
764 b->temp_file = 1;
|
|
|
765
|
|
50
|
766 if (p->out) {
|
|
|
767 *p->last_out = cl;
|
|
|
768 } else {
|
|
|
769 p->out = cl;
|
|
|
770 }
|
|
|
771 p->last_out = &cl->next;
|
|
0
|
772
|
|
|
773 if (b->last_shadow) {
|
|
32
|
774
|
|
50
|
775 tl = ngx_alloc_chain_link(p->pool);
|
|
|
776 if (tl == NULL) {
|
|
32
|
777 return NGX_ABORT;
|
|
|
778 }
|
|
|
779
|
|
|
780 tl->buf = b->shadow;
|
|
|
781 tl->next = NULL;
|
|
|
782
|
|
|
783 *last_free = tl;
|
|
|
784 last_free = &tl->next;
|
|
|
785
|
|
2
|
786 b->shadow->pos = b->shadow->start;
|
|
|
787 b->shadow->last = b->shadow->start;
|
|
|
788
|
|
32
|
789 ngx_event_pipe_remove_shadow_links(b->shadow);
|
|
0
|
790 }
|
|
|
791 }
|
|
|
792
|
|
|
793 return NGX_OK;
|
|
|
794 }
|
|
|
795
|
|
|
796
|
|
|
797 /* the copy input filter */
|
|
|
798
|
|
126
|
799 ngx_int_t
|
|
|
800 ngx_event_pipe_copy_input_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
|
|
0
|
801 {
|
|
|
802 ngx_buf_t *b;
|
|
|
803 ngx_chain_t *cl;
|
|
|
804
|
|
|
805 if (buf->pos == buf->last) {
|
|
|
806 return NGX_OK;
|
|
|
807 }
|
|
|
808
|
|
|
809 if (p->free) {
|
|
56
|
810 cl = p->free;
|
|
|
811 b = cl->buf;
|
|
|
812 p->free = cl->next;
|
|
|
813 ngx_free_chain(p->pool, cl);
|
|
0
|
814
|
|
|
815 } else {
|
|
50
|
816 b = ngx_alloc_buf(p->pool);
|
|
|
817 if (b == NULL) {
|
|
0
|
818 return NGX_ERROR;
|
|
|
819 }
|
|
|
820 }
|
|
|
821
|
|
|
822 ngx_memcpy(b, buf, sizeof(ngx_buf_t));
|
|
|
823 b->shadow = buf;
|
|
|
824 b->tag = p->tag;
|
|
|
825 b->last_shadow = 1;
|
|
|
826 b->recycled = 1;
|
|
|
827 buf->shadow = b;
|
|
|
828
|
|
50
|
829 cl = ngx_alloc_chain_link(p->pool);
|
|
|
830 if (cl == NULL) {
|
|
32
|
831 return NGX_ERROR;
|
|
|
832 }
|
|
|
833
|
|
|
834 cl->buf = b;
|
|
|
835 cl->next = NULL;
|
|
0
|
836
|
|
28
|
837 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0, "input buf #%d", b->num);
|
|
0
|
838
|
|
50
|
839 if (p->in) {
|
|
|
840 *p->last_in = cl;
|
|
|
841 } else {
|
|
|
842 p->in = cl;
|
|
|
843 }
|
|
|
844 p->last_in = &cl->next;
|
|
0
|
845
|
|
|
846 return NGX_OK;
|
|
|
847 }
|
|
|
848
|
|
|
849
|
|
126
|
850 static ngx_inline void
|
|
|
851 ngx_event_pipe_remove_shadow_links(ngx_buf_t *buf)
|
|
0
|
852 {
|
|
|
853 ngx_buf_t *b, *next;
|
|
|
854
|
|
2
|
855 b = buf->shadow;
|
|
|
856
|
|
|
857 if (b == NULL) {
|
|
0
|
858 return;
|
|
|
859 }
|
|
|
860
|
|
|
861 while (!b->last_shadow) {
|
|
|
862 next = b->shadow;
|
|
|
863
|
|
2
|
864 b->temporary = 0;
|
|
|
865 b->recycled = 0;
|
|
0
|
866
|
|
|
867 b->shadow = NULL;
|
|
|
868 b = next;
|
|
|
869 }
|
|
|
870
|
|
2
|
871 b->temporary = 0;
|
|
|
872 b->recycled = 0;
|
|
0
|
873 b->last_shadow = 0;
|
|
|
874
|
|
|
875 b->shadow = NULL;
|
|
|
876
|
|
|
877 buf->shadow = NULL;
|
|
|
878 }
|
|
|
879
|
|
|
880
|
|
126
|
881 static ngx_inline void
|
|
|
882 ngx_event_pipe_free_shadow_raw_buf(ngx_chain_t **free, ngx_buf_t *buf)
|
|
0
|
883 {
|
|
|
884 ngx_buf_t *s;
|
|
|
885 ngx_chain_t *cl, **ll;
|
|
|
886
|
|
|
887 if (buf->shadow == NULL) {
|
|
|
888 return;
|
|
|
889 }
|
|
|
890
|
|
|
891 for (s = buf->shadow; !s->last_shadow; s = s->shadow) { /* void */ }
|
|
|
892
|
|
|
893 ll = free;
|
|
|
894
|
|
378
|
895 for (cl = *free; cl; cl = cl->next) {
|
|
0
|
896 if (cl->buf == s) {
|
|
|
897 *ll = cl->next;
|
|
|
898 break;
|
|
|
899 }
|
|
|
900
|
|
|
901 if (cl->buf->shadow) {
|
|
|
902 break;
|
|
|
903 }
|
|
|
904
|
|
|
905 ll = &cl->next;
|
|
|
906 }
|
|
|
907 }
|
|
|
908
|
|
|
909
|
|
126
|
910 ngx_int_t
|
|
|
911 ngx_event_pipe_add_free_buf(ngx_event_pipe_t *p, ngx_buf_t *b)
|
|
0
|
912 {
|
|
32
|
913 ngx_chain_t *cl;
|
|
|
914
|
|
50
|
915 cl = ngx_alloc_chain_link(p->pool);
|
|
|
916 if (cl == NULL) {
|
|
32
|
917 return NGX_ERROR;
|
|
0
|
918 }
|
|
|
919
|
|
32
|
920 b->pos = b->start;
|
|
|
921 b->last = b->start;
|
|
|
922 b->shadow = NULL;
|
|
|
923
|
|
|
924 cl->buf = b;
|
|
|
925
|
|
|
926 if (p->free_raw_bufs == NULL) {
|
|
|
927 p->free_raw_bufs = cl;
|
|
|
928 cl->next = NULL;
|
|
|
929
|
|
|
930 return NGX_OK;
|
|
|
931 }
|
|
|
932
|
|
|
933 if (p->free_raw_bufs->buf->pos == p->free_raw_bufs->buf->last) {
|
|
0
|
934
|
|
32
|
935 /* add the free buf to the list start */
|
|
|
936
|
|
|
937 cl->next = p->free_raw_bufs;
|
|
|
938 p->free_raw_bufs = cl;
|
|
|
939
|
|
|
940 return NGX_OK;
|
|
0
|
941 }
|
|
32
|
942
|
|
|
943 /* the first free buf is partialy filled, thus add the free buf after it */
|
|
|
944
|
|
|
945 cl->next = p->free_raw_bufs->next;
|
|
|
946 p->free_raw_bufs->next = cl;
|
|
|
947
|
|
|
948 return NGX_OK;
|
|
0
|
949 }
|
|
|
950
|
|
|
951
|
|
126
|
952 static ngx_int_t
|
|
|
953 ngx_event_pipe_drain_chains(ngx_event_pipe_t *p)
|
|
0
|
954 {
|
|
|
955 ngx_chain_t *cl, *tl;
|
|
|
956
|
|
|
957 for ( ;; ) {
|
|
|
958 if (p->busy) {
|
|
|
959 cl = p->busy;
|
|
|
960 p->busy = NULL;
|
|
|
961
|
|
|
962 } else if (p->out) {
|
|
|
963 cl = p->out;
|
|
|
964 p->out = NULL;
|
|
|
965
|
|
|
966 } else if (p->in) {
|
|
|
967 cl = p->in;
|
|
|
968 p->in = NULL;
|
|
|
969
|
|
|
970 } else {
|
|
|
971 return NGX_OK;
|
|
|
972 }
|
|
|
973
|
|
|
974 while (cl) {
|
|
|
975 if (cl->buf->last_shadow) {
|
|
32
|
976 if (ngx_event_pipe_add_free_buf(p, cl->buf->shadow) != NGX_OK) {
|
|
28
|
977 return NGX_ABORT;
|
|
|
978 }
|
|
|
979
|
|
0
|
980 cl->buf->last_shadow = 0;
|
|
|
981 }
|
|
|
982
|
|
|
983 cl->buf->shadow = NULL;
|
|
|
984 tl = cl->next;
|
|
|
985 cl->next = p->free;
|
|
|
986 p->free = cl;
|
|
|
987 cl = tl;
|
|
|
988 }
|
|
|
989 }
|
|
|
990 }
|
