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/* Copyright (c) 2016 Thomas Preud'homme <thomas.preudhomme@arm.com> */
/*
FUNCTION
<<__retarget_lock_init>>, <<__retarget_lock_init_recursive>>, <<__retarget_lock_close>>,
<<__retarget_lock_close_recursive>>, <<__retarget_lock_acquire>>,
<<__retarget_lock_acquire_recursive>>, <<__retarget_lock_release>>,
<<__retarget_lock_release_recursive>>---locking routines
INDEX
__lock___sfp_recursive_mutex
INDEX
__lock___atexit_recursive_mutex
INDEX
__lock___at_quick_exit_mutex
INDEX
__lock___malloc_recursive_mutex
INDEX
__lock___env_recursive_mutex
INDEX
__lock___tz_mutex
INDEX
__lock___arc4random_mutex
INDEX
__retarget_lock_init
INDEX
__retarget_lock_init_recursive
INDEX
__retarget_lock_close
INDEX
__retarget_lock_close_recursive
INDEX
__retarget_lock_acquire
INDEX
__retarget_lock_acquire_recursive
INDEX
__retarget_lock_release
INDEX
__retarget_lock_release_recursive
SYNOPSIS
#include <lock.h>
struct __lock __lock___sfp_recursive_mutex;
struct __lock __lock___atexit_recursive_mutex;
struct __lock __lock___at_quick_exit_mutex;
struct __lock __lock___malloc_recursive_mutex;
struct __lock __lock___env_recursive_mutex;
struct __lock __lock___tz_mutex;
struct __lock __lock___arc4random_mutex;
void __retarget_lock_init (_LOCK_T * <[lock_ptr]>);
void __retarget_lock_init_recursive (_LOCK_T * <[lock_ptr]>);
void __retarget_lock_close (_LOCK_T <[lock]>);
void __retarget_lock_close_recursive (_LOCK_T <[lock]>);
void __retarget_lock_acquire (_LOCK_T <[lock]>);
void __retarget_lock_acquire_recursive (_LOCK_T <[lock]>);
void __retarget_lock_release (_LOCK_T <[lock]>);
void __retarget_lock_release_recursive (_LOCK_T <[lock]>);
DESCRIPTION
Newlib was configured to allow the target platform to provide the locking
routines and static locks at link time. As such, a dummy default
implementation of these routines and static locks is provided for
single-threaded application to link successfully out of the box on bare-metal
systems.
For multi-threaded applications the target platform is required to provide
an implementation for @strong{all} these routines and static locks. If some
routines or static locks are missing, the link will fail with doubly defined
symbols.
PORTABILITY
These locking routines and static lock are newlib-specific. Supporting OS
subroutines are required for linking multi-threaded applications.
*/
/* dummy lock routines and static locks for single-threaded apps */
#include <sys/lock.h>
#ifndef __SINGLE_THREAD
struct __lock {
char unused;
};
struct __lock __lock___libc_recursive_mutex;
void
__retarget_lock_init(_LOCK_T *lock)
{
(void)lock;
}
void
__retarget_lock_init_recursive(_LOCK_T *lock)
{
(void)lock;
}
void
__retarget_lock_close(_LOCK_T lock)
{
(void)lock;
}
void
__retarget_lock_close_recursive(_LOCK_T lock)
{
(void)lock;
}
void
__retarget_lock_acquire(_LOCK_T lock)
{
(void)lock;
}
void
__retarget_lock_acquire_recursive(_LOCK_T lock)
{
(void)lock;
}
void
__retarget_lock_release(_LOCK_T lock)
{
(void)lock;
}
void
__retarget_lock_release_recursive(_LOCK_T lock)
{
(void)lock;
}
#endif /* __SINGLE_THREAD */
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