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3cd1253977
Years update, references to WIND_BASE were removed, and WPILib license was moved to the root directory of the project. If there was already a comment block, a year range through 2016 was created using the first year in the comment. If there was no comment block, a block with just the year 2016 was added. Comments were not added to files from external sources (NI, CTRE). Change-Id: Iff4f098ab908b90b8d929902dea903de2f596acc
36 lines
1009 B
C++
36 lines
1009 B
C++
/*----------------------------------------------------------------------------*/
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/* Copyright (c) FIRST 2015-2016. All Rights Reserved. */
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/* Open Source Software - may be modified and shared by FRC teams. The code */
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/* must be accompanied by the FIRST BSD license file in the root directory of */
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/* the project. */
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/*----------------------------------------------------------------------------*/
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#include "HAL/cpp/Semaphore.hpp"
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Semaphore::Semaphore(uint32_t count) {
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m_count = count;
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}
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void Semaphore::give() {
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std::lock_guard<priority_mutex> lock(m_mutex);
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++m_count;
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m_condition.notify_one();
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}
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void Semaphore::take() {
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std::unique_lock<priority_mutex> lock(m_mutex);
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m_condition.wait(lock, [this] { return m_count; } );
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--m_count;
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}
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bool Semaphore::tryTake() {
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std::lock_guard<priority_mutex> lock(m_mutex);
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if (m_count) {
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--m_count;
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return true;
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}
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else {
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return false;
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}
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}
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