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annotate test/testatomic.c @ 5080:6d94060d16a9

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Fixed bug #1011 Daniel Ellis 2010-06-25 15:20:31 PDT SDL based applications sometimes display the wrong application name in the Sound Preferences dialog when using pulseaudio. I can see from the code that the SDL pulse module is initiating a new pulse audio context and passing an application name using the function get_progname(). The get_progname() function returns the name of the current process. However, the process name is often not a suitable name to use. For example, the OpenShot video editor is a python application, and so "python" is displayed in the Sound Preferences window (see Bug #596504), when it should be displaying "OpenShot". PulseAudio allows applications to specify the application name, either at the time the context is created (as SDL does currently), or by special environment variables (see http://www.pulseaudio.org/wiki/ApplicationProperties). If no name is specified, then pulseaudio will determine the name based on the process. If you specify the application name when initiating the pulseaudio context, then that will override any application name specified using an environment variable. As libsdl is a library, I believe the solution is for libsdl to not specify any application name when initiating a pulseaudio context, which will enable applications to specify the application name using environment variables. In the case that the applications do not specify anything, pulseaudio will fall back to using the process name anyway. The attached patch removes the get_progname() function and passes NULL as the application name when creating the pulseaudio context, which fixes the issue.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 23 Jan 2011 21:55:04 -0800
parents 9de326b3099c
children 3a95a2b93eb3
rev   line source
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1 #include <stdio.h>
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2 #include "SDL.h"
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3
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4 /* Make sure we have good macros for printing 32 and 64 bit values */
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5 #ifndef PRIu32
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6 #define PRIu32 "u"
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7 #endif
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8 #ifndef PRIu64
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9 #ifdef __WIN32__
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10 #define PRIu64 "I64u"
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11 #else
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12 #define PRIu64 "llu"
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13 #endif
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14 #endif
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15
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16 /*
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17 Absolutely basic tests just to see if we get the expected value
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18 after calling each function.
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19 */
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20
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21 char *
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22 tf(SDL_bool tf)
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23 {
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24 static char *t = "true";
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25 static char *f = "false";
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26
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27 if (tf)
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28 {
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29 return t;
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30 }
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31
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32 return f;
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33 }
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34
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35 int
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36 main(int argc, char *argv[])
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37 {
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38
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39 volatile Uint32 val32 = 0;
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40 Uint32 ret32 = 0;
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41
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42 volatile Uint64 val64 = 0;
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43 Uint64 ret64 = 0;
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44
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45 SDL_SpinLock lock = 0;
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46
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47 SDL_bool tfret = SDL_FALSE;
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48
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49 printf("\nspin lock---------------------------------------\n\n");
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50
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51 SDL_AtomicLock(&lock);
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52 printf("AtomicLock lock=%d\n", lock);
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53 SDL_AtomicUnlock(&lock);
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54 printf("AtomicUnlock lock=%d\n", lock);
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55
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56 printf("\n32 bit -----------------------------------------\n\n");
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57
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58 val32 = 0;
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59 tfret = SDL_AtomicTestThenSet32(&val32);
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60 printf("TestThenSet32 tfret=%s val=%"PRIu32"\n", tf(tfret), val32);
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61 tfret = SDL_AtomicTestThenSet32(&val32);
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62 printf("TestThenSet32 tfret=%s val=%"PRIu32"\n", tf(tfret), val32);
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63
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64 SDL_AtomicClear32(&val32);
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65 printf("Clear32 val=%"PRIu32"\n", val32);
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66
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67 ret32 = SDL_AtomicFetchThenIncrement32(&val32);
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68 printf("FetchThenIncrement32 ret=%"PRIu32" val=%"PRIu32"\n", ret32, val32);
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69
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70 ret32 = SDL_AtomicFetchThenDecrement32(&val32);
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71 printf("FetchThenDecrement32 ret=%"PRIu32" val=%"PRIu32"\n", ret32, val32);
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72
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73 ret32 = SDL_AtomicFetchThenAdd32(&val32, 10);
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74 printf("FetchThenAdd32 ret=%"PRIu32" val=%"PRIu32"\n", ret32, val32);
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75
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76 ret32 = SDL_AtomicFetchThenSubtract32(&val32, 10);
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77 printf("FetchThenSubtract32 ret=%"PRIu32" val=%"PRIu32"\n", ret32, val32);
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78
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79 ret32 = SDL_AtomicIncrementThenFetch32(&val32);
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80 printf("IncrementThenFetch32 ret=%"PRIu32" val=%"PRIu32"\n", ret32, val32);
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81
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82 ret32 = SDL_AtomicDecrementThenFetch32(&val32);
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83 printf("DecrementThenFetch32 ret=%"PRIu32" val=%"PRIu32"\n", ret32, val32);
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85 ret32 = SDL_AtomicAddThenFetch32(&val32, 10);
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86 printf("AddThenFetch32 ret=%"PRIu32" val=%"PRIu32"\n", ret32, val32);
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88 ret32 = SDL_AtomicSubtractThenFetch32(&val32, 10);
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89 printf("SubtractThenFetch32 ret=%"PRIu32" val=%"PRIu32"\n", ret32, val32);
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90
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91 #ifdef SDL_HAS_64BIT_TYPE
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92 printf("\n64 bit -----------------------------------------\n\n");
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93
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94 val64 = 0;
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95 tfret = SDL_AtomicTestThenSet64(&val64);
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96 printf("TestThenSet64 tfret=%s val=%"PRIu64"\n", tf(tfret), val64);
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97 tfret = SDL_AtomicTestThenSet64(&val64);
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98 printf("TestThenSet64 tfret=%s val=%"PRIu64"\n", tf(tfret), val64);
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99
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100 SDL_AtomicClear64(&val64);
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101 printf("Clear64 val=%"PRIu64"\n", val64);
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103 ret64 = SDL_AtomicFetchThenIncrement64(&val64);
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104 printf("FetchThenIncrement64 ret=%"PRIu64" val=%"PRIu64"\n", ret64, val64);
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106 ret64 = SDL_AtomicFetchThenDecrement64(&val64);
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107 printf("FetchThenDecrement64 ret=%"PRIu64" val=%"PRIu64"\n", ret64, val64);
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109 ret64 = SDL_AtomicFetchThenAdd64(&val64, 10);
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110 printf("FetchThenAdd64 ret=%"PRIu64" val=%"PRIu64"\n", ret64, val64);
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112 ret64 = SDL_AtomicFetchThenSubtract64(&val64, 10);
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113 printf("FetchThenSubtract64 ret=%"PRIu64" val=%"PRIu64"\n", ret64, val64);
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115 ret64 = SDL_AtomicIncrementThenFetch64(&val64);
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116 printf("IncrementThenFetch64 ret=%"PRIu64" val=%"PRIu64"\n", ret64, val64);
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118 ret64 = SDL_AtomicDecrementThenFetch64(&val64);
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119 printf("DecrementThenFetch64 ret=%"PRIu64" val=%"PRIu64"\n", ret64, val64);
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3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
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120
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c297230efc75 Disabling 64 bit atomics operations until I figure out why they do not link.
Bob Pendleton <bob@pendleton.com>
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121 ret64 = SDL_AtomicAddThenFetch64(&val64, 10);
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122 printf("AddThenFetch64 ret=%"PRIu64" val=%"PRIu64"\n", ret64, val64);
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3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3201
diff changeset
123
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c297230efc75 Disabling 64 bit atomics operations until I figure out why they do not link.
Bob Pendleton <bob@pendleton.com>
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124 ret64 = SDL_AtomicSubtractThenFetch64(&val64, 10);
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125 printf("SubtractThenFetch64 ret=%"PRIu64" val=%"PRIu64"\n", ret64, val64);
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c297230efc75 Disabling 64 bit atomics operations until I figure out why they do not link.
Bob Pendleton <bob@pendleton.com>
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126 #endif
3186
Sam Lantinga <slouken@libsdl.org>
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127
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Bob Pendleton <bob@pendleton.com>
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128 return 0;
c297230efc75 Disabling 64 bit atomics operations until I figure out why they do not link.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
129 }