42cfd4ff26
If we just had the kernel's implementation, we could just move this to lib/, but possible arch-specific implementations dictate that we just make this a syscall. Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
29 lines
729 B
C
29 lines
729 B
C
/*
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* Copyright (c) 2017 Oticon A/S
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "zephyr/types.h"
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#include "fake_timer.h"
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#include "time_machine.h"
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#include "posix_soc_if.h"
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#if defined(CONFIG_ARCH_HAS_CUSTOM_BUSY_WAIT)
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/**
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* Replacement to the kernel k_busy_wait()
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* Will block this thread (and therefore the whole zephyr) during usec_to_wait
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*
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* Note that interrupts may be received in the meanwhile and that therefore this
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* thread may lose context
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*/
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void z_arch_busy_wait(u32_t usec_to_wait)
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{
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bs_time_t time_end = tm_get_hw_time() + usec_to_wait;
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while (tm_get_hw_time() < time_end) {
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/*There may be wakes due to other interrupts*/
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fake_timer_wake_in_time(time_end);
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posix_halt_cpu();
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}
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}
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#endif
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