Mercurial > dovecot > core-2.2
annotate src/indexer/indexer-client.c @ 13192:af8c5e56d098
indexer: If verbose_proctitle=yes, show how many clients/requests there are.
author | Timo Sirainen <tss@iki.fi> |
---|---|
date | Tue, 09 Aug 2011 19:42:23 +0300 |
parents | 268f76a75e51 |
children | 8dcb7c7f66d5 |
rev | line source |
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13084
0faaceb2f83c
Added "indexer" service, which uses worker processes to perform queued mailbox indexing.
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parents:
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1 /* Copyright (c) 2011 Dovecot authors, see the included COPYING file */ |
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2 |
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3 #include "lib.h" |
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4 #include "llist.h" |
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5 #include "istream.h" |
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6 #include "ostream.h" |
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7 #include "strescape.h" |
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8 #include "master-service.h" |
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9 #include "indexer-queue.h" |
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10 #include "indexer-client.h" |
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11 |
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12 #include <stdlib.h> |
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13 #include <unistd.h> |
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14 |
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15 #define MAX_INBUF_SIZE (1024*64) |
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16 |
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17 #define INDEXER_CLIENT_PROTOCOL_MAJOR_VERSION 1 |
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18 #define INDEXER_CLIENT_PROTOCOL_MINOR_VERSION 0 |
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19 |
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20 struct indexer_client { |
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21 struct indexer_client *prev, *next; |
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22 |
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23 int refcount; |
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24 struct indexer_queue *queue; |
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25 |
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26 int fd; |
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27 struct istream *input; |
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28 struct ostream *output; |
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29 struct io *io; |
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30 |
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31 unsigned int version_received:1; |
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32 unsigned int handshaked:1; |
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33 unsigned int destroyed:1; |
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34 }; |
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35 |
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36 struct indexer_client_request { |
0faaceb2f83c
Added "indexer" service, which uses worker processes to perform queued mailbox indexing.
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37 struct indexer_client *client; |
0faaceb2f83c
Added "indexer" service, which uses worker processes to perform queued mailbox indexing.
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38 unsigned int tag; |
0faaceb2f83c
Added "indexer" service, which uses worker processes to perform queued mailbox indexing.
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39 }; |
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40 |
0faaceb2f83c
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41 struct indexer_client *clients = NULL; |
13192
af8c5e56d098
indexer: If verbose_proctitle=yes, show how many clients/requests there are.
Timo Sirainen <tss@iki.fi>
parents:
13095
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42 static unsigned int clients_count = 0; |
13084
0faaceb2f83c
Added "indexer" service, which uses worker processes to perform queued mailbox indexing.
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43 |
0faaceb2f83c
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44 static void indexer_client_destroy(struct indexer_client *client); |
0faaceb2f83c
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45 static void indexer_client_ref(struct indexer_client *client); |
0faaceb2f83c
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46 static void indexer_client_unref(struct indexer_client *client); |
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47 |
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48 static const char *const* |
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49 indexer_client_next_line(struct indexer_client *client) |
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50 { |
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51 const char *line; |
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52 char **args; |
0faaceb2f83c
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53 unsigned int i; |
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54 |
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55 line = i_stream_next_line(client->input); |
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56 if (line == NULL) |
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57 return NULL; |
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58 |
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59 args = p_strsplit(pool_datastack_create(), line, "\t"); |
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60 for (i = 0; args[i] != NULL; i++) |
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61 args[i] = str_tabunescape(args[i]); |
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62 return (void *)args; |
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63 } |
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64 |
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65 static int |
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66 indexer_client_request_queue(struct indexer_client *client, bool append, |
0faaceb2f83c
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67 const char *const *args, const char **error_r) |
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68 { |
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69 struct indexer_client_request *ctx = NULL; |
0faaceb2f83c
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70 unsigned int tag; |
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71 |
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72 if (str_array_length(args) != 3) { |
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73 *error_r = "Wrong parameter count"; |
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74 return -1; |
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75 } |
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76 if (str_to_uint(args[0], &tag) < 0) { |
0faaceb2f83c
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77 *error_r = "Invalid tag"; |
0faaceb2f83c
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78 return -1; |
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79 } |
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80 |
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81 if (tag != 0) { |
0faaceb2f83c
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82 ctx = i_new(struct indexer_client_request, 1); |
0faaceb2f83c
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83 ctx->client = client; |
0faaceb2f83c
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84 ctx->tag = tag; |
0faaceb2f83c
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85 indexer_client_ref(client); |
0faaceb2f83c
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86 } |
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87 |
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88 indexer_queue_append(client->queue, append, args[1], args[2], ctx); |
13095
268f76a75e51
indexer: Send OK reply to client with the given tag.
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89 o_stream_send_str(client->output, t_strdup_printf("%u\tOK\n", tag)); |
13084
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90 return 0; |
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91 } |
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92 |
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93 static int |
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94 indexer_client_request(struct indexer_client *client, |
0faaceb2f83c
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95 const char *const *args, const char **error_r) |
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96 { |
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97 const char *cmd = args[0]; |
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98 |
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99 args++; |
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100 |
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101 if (strcmp(cmd, "APPEND") == 0) |
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102 return indexer_client_request_queue(client, TRUE, args, error_r); |
0faaceb2f83c
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103 else if (strcmp(cmd, "PREPEND") == 0) |
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104 return indexer_client_request_queue(client, FALSE, args, error_r); |
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105 else { |
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106 *error_r = t_strconcat("Unknown command: ", cmd, NULL); |
0faaceb2f83c
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107 return -1; |
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108 } |
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109 } |
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110 |
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111 static void indexer_client_input(void *context) |
0faaceb2f83c
Added "indexer" service, which uses worker processes to perform queued mailbox indexing.
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112 { |
0faaceb2f83c
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113 struct indexer_client *client = context; |
0faaceb2f83c
Added "indexer" service, which uses worker processes to perform queued mailbox indexing.
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114 const char *line, *const *args, *error; |
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115 |
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116 switch (i_stream_read(client->input)) { |
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117 case -2: |
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118 i_error("BUG: Client connection sent too much data"); |
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119 indexer_client_destroy(client); |
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120 return; |
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121 case -1: |
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122 indexer_client_destroy(client); |
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123 return; |
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124 } |
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125 |
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126 if (!client->version_received) { |
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127 if ((line = i_stream_next_line(client->input)) == NULL) |
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128 return; |
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129 |
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130 if (!version_string_verify(line, "indexer", |
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131 INDEXER_CLIENT_PROTOCOL_MAJOR_VERSION)) { |
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132 i_error("Client not compatible with this server " |
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133 "(mixed old and new binaries?)"); |
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134 indexer_client_destroy(client); |
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135 return; |
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136 } |
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137 client->version_received = TRUE; |
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138 } |
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139 |
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140 while ((args = indexer_client_next_line(client)) != NULL) { |
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141 if (args[0] != NULL) { |
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142 if (indexer_client_request(client, args, &error) < 0) { |
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143 i_error("Client input error: %s", error); |
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144 indexer_client_destroy(client); |
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145 break; |
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146 } |
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147 } |
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148 } |
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149 } |
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150 |
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151 void indexer_client_status_callback(int percentage, void *context) |
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152 { |
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153 struct indexer_client_request *ctx = context; |
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154 |
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155 T_BEGIN { |
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156 o_stream_send_str(ctx->client->output, |
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157 t_strdup_printf("%u\t%d\n", ctx->tag, percentage)); |
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158 } T_END; |
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159 if (percentage < 0 || percentage == 100) { |
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160 indexer_client_unref(ctx->client); |
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161 i_free(ctx); |
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162 } |
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163 } |
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164 |
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165 struct indexer_client * |
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166 indexer_client_create(int fd, struct indexer_queue *queue) |
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167 { |
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168 struct indexer_client *client; |
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169 |
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170 client = i_new(struct indexer_client, 1); |
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171 client->refcount = 1; |
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172 client->queue = queue; |
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173 client->fd = fd; |
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174 client->input = i_stream_create_fd(fd, MAX_INBUF_SIZE, FALSE); |
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175 client->output = o_stream_create_fd(fd, (size_t)-1, FALSE); |
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176 client->io = io_add(fd, IO_READ, indexer_client_input, client); |
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177 |
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178 DLLIST_PREPEND(&clients, client); |
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179 clients_count++; |
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180 indexer_refresh_proctitle(); |
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181 return client; |
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182 } |
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183 |
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184 static void indexer_client_destroy(struct indexer_client *client) |
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185 { |
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186 if (client->destroyed) |
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187 return; |
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188 client->destroyed = TRUE; |
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189 |
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190 DLLIST_REMOVE(&clients, client); |
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191 |
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192 io_remove(&client->io); |
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193 i_stream_close(client->input); |
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194 o_stream_close(client->output); |
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195 if (close(client->fd) < 0) |
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196 i_error("close(client) failed: %m"); |
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197 client->fd = -1; |
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198 indexer_client_unref(client); |
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199 |
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200 clients_count--; |
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201 master_service_client_connection_destroyed(master_service); |
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202 indexer_refresh_proctitle(); |
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203 } |
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204 |
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205 static void indexer_client_ref(struct indexer_client *client) |
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206 { |
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207 i_assert(client->refcount > 0); |
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208 |
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209 client->refcount++; |
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210 } |
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211 |
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212 static void indexer_client_unref(struct indexer_client *client) |
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213 { |
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214 i_assert(client->refcount > 0); |
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215 |
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216 if (--client->refcount > 0) |
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217 return; |
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218 i_stream_destroy(&client->input); |
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219 o_stream_destroy(&client->output); |
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220 i_free(client); |
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221 } |
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222 |
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223 unsigned int indexer_clients_get_count(void) |
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224 { |
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225 return clients_count; |
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226 } |
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227 |
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228 void indexer_clients_destroy_all(void) |
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229 { |
0faaceb2f83c
Added "indexer" service, which uses worker processes to perform queued mailbox indexing.
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
230 while (clients != NULL) |
0faaceb2f83c
Added "indexer" service, which uses worker processes to perform queued mailbox indexing.
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
231 indexer_client_destroy(clients); |
0faaceb2f83c
Added "indexer" service, which uses worker processes to perform queued mailbox indexing.
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
232 } |