author | Medo <smaxein@googlemail.com> |
Sun, 19 Aug 2012 15:05:23 +0200 | |
changeset 7576 | 65d29988fd3d |
parent 7316 | f7b49b2c5d84 |
child 10017 | de822cd3df3a |
permissions | -rw-r--r-- |
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/* |
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* Hedgewars, a free turn based strategy game |
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* Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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*/ |
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#include "mapconn.h" |
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#include "ipcbase.h" |
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#include "ipcprotocol.h" |
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#include "../util/logging.h" |
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#include "../util/buffer.h" |
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#include "../util/util.h" |
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#include <stdlib.h> |
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typedef enum { |
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AWAIT_CONNECTION, |
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AWAIT_REPLY, |
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AWAIT_CLOSE, |
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FINISHED |
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} mapconn_state; |
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struct _flib_mapconn { |
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uint8_t mapBuffer[IPCBASE_MAPMSG_BYTES]; |
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flib_ipcbase *ipcBase; |
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flib_vector *configBuffer; |
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mapconn_state progress; |
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void (*onSuccessCb)(void*, const uint8_t*, int); |
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void *onSuccessCtx; |
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void (*onFailureCb)(void*, const char*); |
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void *onFailureCtx; |
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bool running; |
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bool destroyRequested; |
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}; |
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static void noop_handleSuccess(void *context, const uint8_t *bitmap, int numHedgehogs) {} |
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static void noop_handleFailure(void *context, const char *errormessage) {} |
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static void clearCallbacks(flib_mapconn *conn) { |
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conn->onSuccessCb = &noop_handleSuccess; |
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conn->onFailureCb = &noop_handleFailure; |
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} |
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static flib_vector *createConfigBuffer(const flib_map *mapdesc) { |
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flib_vector *result = NULL; |
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flib_vector *tempbuffer = flib_vector_create(); |
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if(tempbuffer) { |
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bool error = false; |
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error |= flib_ipc_append_mapconf(tempbuffer, mapdesc, true); |
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error |= flib_ipc_append_message(tempbuffer, "!"); |
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if(!error) { |
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result = tempbuffer; |
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tempbuffer = NULL; |
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} |
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} |
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flib_vector_destroy(tempbuffer); |
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return result; |
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} |
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flib_mapconn *flib_mapconn_create(const flib_map *mapdesc) { |
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if(log_badargs_if(mapdesc==NULL)) { |
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return NULL; |
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} |
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flib_mapconn *result = NULL; |
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flib_mapconn *tempConn = flib_calloc(1, sizeof(flib_mapconn)); |
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if(tempConn) { |
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tempConn->ipcBase = flib_ipcbase_create(); |
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tempConn->configBuffer = createConfigBuffer(mapdesc); |
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if(tempConn->ipcBase && tempConn->configBuffer) { |
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tempConn->progress = AWAIT_CONNECTION; |
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clearCallbacks(tempConn); |
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result = tempConn; |
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tempConn = NULL; |
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} |
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} |
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flib_mapconn_destroy(tempConn); |
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return result; |
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} |
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void flib_mapconn_destroy(flib_mapconn *conn) { |
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if(conn) { |
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if(conn->running) { |
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/* |
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* The function was called from a callback, so the tick function is still running |
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* and we delay the actual destruction. We ensure no further callbacks will be |
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* sent to prevent surprises. |
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*/ |
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clearCallbacks(conn); |
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conn->destroyRequested = true; |
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} else { |
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flib_ipcbase_destroy(conn->ipcBase); |
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flib_vector_destroy(conn->configBuffer); |
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free(conn); |
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} |
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} |
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} |
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int flib_mapconn_getport(flib_mapconn *conn) { |
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117 |
if(log_badargs_if(conn==NULL)) { |
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118 |
return 0; |
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119 |
} |
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120 |
return flib_ipcbase_port(conn->ipcBase); |
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121 |
} |
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122 |
|
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123 |
void flib_mapconn_onSuccess(flib_mapconn *conn, void (*callback)(void* context, const uint8_t *bitmap, int numHedgehogs), void *context) { |
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124 |
if(!log_badargs_if(conn==NULL)) { |
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125 |
conn->onSuccessCb = callback ? callback : &noop_handleSuccess; |
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126 |
conn->onSuccessCtx = context; |
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127 |
} |
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128 |
} |
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129 |
|
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130 |
void flib_mapconn_onFailure(flib_mapconn *conn, void (*callback)(void* context, const char *errormessage), void *context) { |
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131 |
if(!log_badargs_if(conn==NULL)) { |
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132 |
conn->onFailureCb = callback ? callback : &noop_handleFailure; |
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133 |
conn->onFailureCtx = context; |
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134 |
} |
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135 |
} |
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136 |
|
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137 |
static void flib_mapconn_wrappedtick(flib_mapconn *conn) { |
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138 |
if(conn->progress == AWAIT_CONNECTION) { |
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139 |
flib_ipcbase_accept(conn->ipcBase); |
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140 |
switch(flib_ipcbase_state(conn->ipcBase)) { |
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141 |
case IPC_CONNECTED: |
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142 |
{ |
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143 |
flib_constbuffer configBuffer = flib_vector_as_constbuffer(conn->configBuffer); |
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144 |
if(flib_ipcbase_send_raw(conn->ipcBase, configBuffer.data, configBuffer.size)) { |
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145 |
conn->progress = FINISHED; |
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146 |
conn->onFailureCb(conn->onFailureCtx, "Error sending map information to the engine."); |
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147 |
return; |
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148 |
} else { |
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149 |
conn->progress = AWAIT_REPLY; |
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|
150 |
} |
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|
151 |
} |
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|
152 |
break; |
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|
153 |
case IPC_NOT_CONNECTED: |
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|
154 |
conn->progress = FINISHED; |
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|
155 |
conn->onFailureCb(conn->onFailureCtx, "Engine connection closed unexpectedly."); |
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|
156 |
return; |
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|
157 |
default: |
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|
158 |
break; |
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|
159 |
} |
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|
160 |
} |
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|
161 |
|
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|
162 |
if(conn->progress == AWAIT_REPLY) { |
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163 |
if(flib_ipcbase_recv_map(conn->ipcBase, conn->mapBuffer) >= 0) { |
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|
164 |
conn->progress = AWAIT_CLOSE; |
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|
165 |
} else if(flib_ipcbase_state(conn->ipcBase) != IPC_CONNECTED) { |
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|
166 |
conn->progress = FINISHED; |
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|
167 |
conn->onFailureCb(conn->onSuccessCtx, "Engine connection closed unexpectedly."); |
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|
168 |
return; |
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|
169 |
} |
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|
170 |
} |
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|
171 |
|
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|
172 |
if(conn->progress == AWAIT_CLOSE) { |
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173 |
// Just do throwaway reads so we find out when the engine disconnects |
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|
174 |
uint8_t buf[256]; |
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175 |
flib_ipcbase_recv_message(conn->ipcBase, buf); |
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|
176 |
if(flib_ipcbase_state(conn->ipcBase) != IPC_CONNECTED) { |
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|
177 |
conn->progress = FINISHED; |
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|
178 |
conn->onSuccessCb(conn->onSuccessCtx, conn->mapBuffer, conn->mapBuffer[IPCBASE_MAPMSG_BYTES-1]); |
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|
179 |
return; |
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|
180 |
} |
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|
181 |
} |
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|
182 |
} |
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|
183 |
|
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|
184 |
void flib_mapconn_tick(flib_mapconn *conn) { |
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185 |
if(!log_badargs_if(conn==NULL) |
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186 |
&& !log_w_if(conn->running, "Call to flib_mapconn_tick from a callback") |
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|
187 |
&& !log_w_if(conn->progress == FINISHED, "We are already done.")) { |
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|
188 |
conn->running = true; |
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|
189 |
flib_mapconn_wrappedtick(conn); |
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|
190 |
conn->running = false; |
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|
191 |
|
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|
192 |
if(conn->destroyRequested) { |
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|
193 |
flib_mapconn_destroy(conn); |
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|
194 |
} |
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|
195 |
} |
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|
196 |
} |