| 1 | /* |
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| 2 | FUNCTION |
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| 3 | <<__retarget_lock_init>>, <<__retarget_lock_init_recursive>>, <<__retarget_lock_close>>, <<__retarget_lock_close_recursive>>, <<__retarget_lock_acquire>>, <<__retarget_lock_acquire_recursive>>, <<__retarget_lock_try_acquire>>, <<__retarget_lock_try_acquire_recursive>>, <<__retarget_lock_release>>, <<__retarget_lock_release_recursive>>---locking routines |
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| 4 | |
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| 5 | INDEX |
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| 6 | __lock___sinit_recursive_mutex |
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| 7 | INDEX |
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| 8 | __lock___sfp_recursive_mutex |
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| 9 | INDEX |
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| 10 | __lock___atexit_recursive_mutex |
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| 11 | INDEX |
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| 12 | __lock___at_quick_exit_mutex |
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| 13 | INDEX |
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| 14 | __lock___malloc_recursive_mutex |
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| 15 | INDEX |
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| 16 | __lock___env_recursive_mutex |
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| 17 | INDEX |
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| 18 | __lock___tz_mutex |
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| 19 | INDEX |
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| 20 | __lock___dd_hash_mutex |
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| 21 | INDEX |
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| 22 | __lock___arc4random_mutex |
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| 23 | |
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| 24 | INDEX |
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| 25 | __retarget_lock_init |
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| 26 | INDEX |
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| 27 | __retarget_lock_init_recursive |
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| 28 | INDEX |
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| 29 | __retarget_lock_close |
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| 30 | INDEX |
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| 31 | __retarget_lock_close_recursive |
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| 32 | INDEX |
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| 33 | __retarget_lock_acquire |
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| 34 | INDEX |
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| 35 | __retarget_lock_acquire_recursive |
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| 36 | INDEX |
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| 37 | __retarget_lock_try_acquire |
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| 38 | INDEX |
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| 39 | __retarget_lock_try_acquire_recursive |
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| 40 | INDEX |
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| 41 | __retarget_lock_release |
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| 42 | INDEX |
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| 43 | __retarget_lock_release_recursive |
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| 44 | |
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| 45 | SYNOPSIS |
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| 46 | #include <lock.h> |
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| 47 | struct __lock __lock___sinit_recursive_mutex; |
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| 48 | struct __lock __lock___sfp_recursive_mutex; |
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| 49 | struct __lock __lock___atexit_recursive_mutex; |
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| 50 | struct __lock __lock___at_quick_exit_mutex; |
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| 51 | struct __lock __lock___malloc_recursive_mutex; |
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| 52 | struct __lock __lock___env_recursive_mutex; |
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| 53 | struct __lock __lock___tz_mutex; |
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| 54 | struct __lock __lock___dd_hash_mutex; |
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| 55 | struct __lock __lock___arc4random_mutex; |
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| 56 | |
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| 57 | void __retarget_lock_init (_LOCK_T * <[lock_ptr]>); |
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| 58 | void __retarget_lock_init_recursive (_LOCK_T * <[lock_ptr]>); |
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| 59 | void __retarget_lock_close (_LOCK_T <[lock]>); |
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| 60 | void __retarget_lock_close_recursive (_LOCK_T <[lock]>); |
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| 61 | void __retarget_lock_acquire (_LOCK_T <[lock]>); |
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| 62 | void __retarget_lock_acquire_recursive (_LOCK_T <[lock]>); |
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| 63 | int __retarget_lock_try_acquire (_LOCK_T <[lock]>); |
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| 64 | int __retarget_lock_try_acquire_recursive (_LOCK_T <[lock]>); |
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| 65 | void __retarget_lock_release (_LOCK_T <[lock]>); |
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| 66 | void __retarget_lock_release_recursive (_LOCK_T <[lock]>); |
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| 67 | |
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| 68 | DESCRIPTION |
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| 69 | Newlib was configured to allow the target platform to provide the locking |
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| 70 | routines and static locks at link time. As such, a dummy default |
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| 71 | implementation of these routines and static locks is provided for |
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| 72 | single-threaded application to link successfully out of the box on bare-metal |
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| 73 | systems. |
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| 74 | |
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| 75 | For multi-threaded applications the target platform is required to provide |
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| 76 | an implementation for @strong{all} these routines and static locks. If some |
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| 77 | routines or static locks are missing, the link will fail with doubly defined |
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| 78 | symbols. |
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| 79 | |
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| 80 | PORTABILITY |
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| 81 | These locking routines and static lock are newlib-specific. Supporting OS |
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| 82 | subroutines are required for linking multi-threaded applications. |
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| 83 | */ |
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| 84 | |
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| 85 | /* dummy lock routines and static locks for single-threaded apps */ |
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| 86 | |
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| 87 | #ifndef __SINGLE_THREAD__ |
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| 88 | |
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| 89 | #include <sys/lock.h> |
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| 90 | |
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| 91 | struct __lock { |
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| 92 | char unused; |
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| 93 | }; |
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| 94 | |
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| 95 | struct __lock __lock___sinit_recursive_mutex; |
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| 96 | struct __lock __lock___sfp_recursive_mutex; |
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| 97 | struct __lock __lock___atexit_recursive_mutex; |
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| 98 | struct __lock __lock___at_quick_exit_mutex; |
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| 99 | struct __lock __lock___malloc_recursive_mutex; |
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| 100 | struct __lock __lock___env_recursive_mutex; |
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| 101 | struct __lock __lock___tz_mutex; |
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| 102 | struct __lock __lock___dd_hash_mutex; |
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| 103 | struct __lock __lock___arc4random_mutex; |
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| 104 | |
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| 105 | void |
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| 106 | __retarget_lock_init (_LOCK_T *lock) |
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| 107 | { |
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| 108 | } |
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| 109 | |
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| 110 | void |
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| 111 | __retarget_lock_init_recursive(_LOCK_T *lock) |
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| 112 | { |
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| 113 | } |
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| 114 | |
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| 115 | void |
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| 116 | __retarget_lock_close(_LOCK_T lock) |
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| 117 | { |
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| 118 | } |
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| 119 | |
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| 120 | void |
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| 121 | __retarget_lock_close_recursive(_LOCK_T lock) |
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| 122 | { |
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| 123 | } |
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| 124 | |
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| 125 | void |
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| 126 | __retarget_lock_acquire (_LOCK_T lock) |
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| 127 | { |
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| 128 | } |
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| 129 | |
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| 130 | void |
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| 131 | __retarget_lock_acquire_recursive (_LOCK_T lock) |
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| 132 | { |
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| 133 | } |
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| 134 | |
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| 135 | int |
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| 136 | __retarget_lock_try_acquire(_LOCK_T lock) |
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| 137 | { |
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| 138 | return 1; |
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| 139 | } |
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| 140 | |
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| 141 | int |
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| 142 | __retarget_lock_try_acquire_recursive(_LOCK_T lock) |
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| 143 | { |
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| 144 | return 1; |
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| 145 | } |
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| 146 | |
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| 147 | void |
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| 148 | __retarget_lock_release (_LOCK_T lock) |
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| 149 | { |
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| 150 | } |
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| 151 | |
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| 152 | void |
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| 153 | __retarget_lock_release_recursive (_LOCK_T lock) |
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| 154 | { |
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| 155 | } |
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| 156 | |
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| 157 | #endif /* !defined(__SINGLE_THREAD__) */ |
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