mirror of https://github.com/ArduPilot/ardupilot
21 lines
534 B
C++
21 lines
534 B
C++
#pragma once
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#include "AP_HAL_Namespace.h"
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#define HAL_SEMAPHORE_BLOCK_FOREVER 0
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class AP_HAL::Semaphore {
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public:
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virtual bool take(uint32_t timeout_ms) WARN_IF_UNUSED = 0 ;
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virtual bool take_nonblocking() WARN_IF_UNUSED = 0;
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// a varient that blocks forever
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-result"
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virtual void take_blocking() { take(HAL_SEMAPHORE_BLOCK_FOREVER); };
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#pragma GCC diagnostic pop
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virtual bool give() = 0;
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virtual ~Semaphore(void) {}
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};
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