author | Mike Kinghan <mikek@symbian.org> |
Thu, 25 Nov 2010 14:28:39 +0000 | |
branch | GCC_SURGE |
changeset 135 | 10852f1a0ae9 |
parent 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
1
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
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1 |
/* |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
2 |
SDL - Simple DirectMedia Layer |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
3 |
Copyright (C) 1997-2006 Sam Lantinga |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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4 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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5 |
This library is free software; you can redistribute it and/or |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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6 |
modify it under the terms of the GNU Lesser General Public |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
7 |
License as published by the Free Software Foundation; either |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
8 |
version 2.1 of the License, or (at your option) any later version. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
9 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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10 |
This library is distributed in the hope that it will be useful, |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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11 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
12 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
13 |
Lesser General Public License for more details. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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14 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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15 |
You should have received a copy of the GNU Lesser General Public |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
16 |
License along with this library; if not, write to the Free Software |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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17 |
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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18 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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19 |
Sam Lantinga |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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20 |
slouken@libsdl.org |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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21 |
*/ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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22 |
#include "SDL_config.h" |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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23 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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24 |
/* |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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25 |
* GNU pth conditions variables |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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26 |
* |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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27 |
* Patrice Mandin |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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28 |
*/ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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29 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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30 |
#include <pth.h> |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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31 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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32 |
#include "SDL_thread.h" |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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33 |
#include "SDL_sysmutex_c.h" |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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34 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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35 |
struct SDL_cond |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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36 |
{ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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37 |
pth_cond_t condpth_p; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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38 |
}; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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39 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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40 |
/* Create a condition variable */ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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41 |
SDL_cond * SDL_CreateCond(void) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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42 |
{ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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43 |
SDL_cond *cond; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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44 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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45 |
cond = (SDL_cond *) SDL_malloc(sizeof(SDL_cond)); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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46 |
if ( cond ) { |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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47 |
if ( pth_cond_init(&(cond->condpth_p)) < 0 ) { |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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48 |
SDL_SetError("pthread_cond_init() failed"); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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49 |
SDL_free(cond); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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50 |
cond = NULL; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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51 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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52 |
} else { |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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53 |
SDL_OutOfMemory(); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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54 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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55 |
return(cond); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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56 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
57 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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58 |
/* Destroy a condition variable */ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
59 |
void SDL_DestroyCond(SDL_cond *cond) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
60 |
{ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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61 |
if ( cond ) { |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
62 |
SDL_free(cond); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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63 |
} |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
64 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
65 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
66 |
/* Restart one of the threads that are waiting on the condition variable */ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
67 |
int SDL_CondSignal(SDL_cond *cond) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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68 |
{ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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69 |
int retval; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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70 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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71 |
if ( ! cond ) { |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
72 |
SDL_SetError("Passed a NULL condition variable"); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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73 |
return -1; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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74 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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75 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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76 |
retval = 0; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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77 |
if ( pth_cond_notify(&(cond->condpth_p), FALSE) != 0 ) { |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
78 |
SDL_SetError("pth_cond_notify() failed"); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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79 |
retval = -1; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
80 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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81 |
return retval; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
82 |
} |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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83 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
84 |
/* Restart all threads that are waiting on the condition variable */ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
85 |
int SDL_CondBroadcast(SDL_cond *cond) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
86 |
{ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
87 |
int retval; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
88 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
89 |
if ( ! cond ) { |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
90 |
SDL_SetError("Passed a NULL condition variable"); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
91 |
return -1; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
92 |
} |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
93 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
94 |
retval = 0; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
95 |
if ( pth_cond_notify(&(cond->condpth_p), TRUE) != 0 ) { |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
96 |
SDL_SetError("pth_cond_notify() failed"); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
97 |
retval = -1; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
98 |
} |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
99 |
return retval; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
100 |
} |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
101 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
102 |
/* Wait on the condition variable for at most 'ms' milliseconds. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
103 |
The mutex must be locked before entering this function! |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
104 |
The mutex is unlocked during the wait, and locked again after the wait. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
105 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
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|
106 |
Typical use: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
107 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
108 |
Thread A: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
109 |
SDL_LockMutex(lock); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
110 |
while ( ! condition ) { |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
111 |
SDL_CondWait(cond); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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112 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
113 |
SDL_UnlockMutex(lock); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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changeset
|
114 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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changeset
|
115 |
Thread B: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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changeset
|
116 |
SDL_LockMutex(lock); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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117 |
... |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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118 |
condition = true; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
119 |
... |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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120 |
SDL_UnlockMutex(lock); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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121 |
*/ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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122 |
int SDL_CondWaitTimeout(SDL_cond *cond, SDL_mutex *mutex, Uint32 ms) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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123 |
{ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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124 |
int retval; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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125 |
pth_event_t ev; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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126 |
int sec; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
127 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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128 |
if ( ! cond ) { |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
129 |
SDL_SetError("Passed a NULL condition variable"); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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130 |
return -1; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
131 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
132 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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133 |
retval = 0; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
134 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
135 |
sec = ms/1000; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
136 |
ev = pth_event(PTH_EVENT_TIME, pth_timeout(sec,(ms-sec*1000)*1000)); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
137 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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138 |
if ( pth_cond_await(&(cond->condpth_p), &(mutex->mutexpth_p), ev) != 0 ) { |
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Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
139 |
SDL_SetError("pth_cond_await() failed"); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
140 |
retval = -1; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
141 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
142 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
143 |
pth_event_free(ev, PTH_FREE_ALL); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
144 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
145 |
return retval; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
146 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
147 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
148 |
/* Wait on the condition variable forever */ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
149 |
int SDL_CondWait(SDL_cond *cond, SDL_mutex *mutex) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
150 |
{ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
151 |
int retval; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
152 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
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|
153 |
if ( ! cond ) { |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
154 |
SDL_SetError("Passed a NULL condition variable"); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
155 |
return -1; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
156 |
} |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
157 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
158 |
retval = 0; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
159 |
if ( pth_cond_await(&(cond->condpth_p), &(mutex->mutexpth_p), NULL) != 0 ) { |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
160 |
SDL_SetError("pth_cond_await() failed"); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
161 |
retval = -1; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
162 |
} |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
163 |
return retval; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
164 |
} |