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authormetagn <metagngn@gmail.com>2023-06-06 07:53:21 +0300
committerGitHub <noreply@github.com>2023-06-06 06:53:21 +0200
commit2ab948ce53e3d9b80bf9b02644c8ec8991f34d0a (patch)
tree0382d24fc7fd4c09397bc56bf7dccc7ba5b19e42 /lib/std/sysrand.nim
parent0a212f97a5dd4d5dd1ea84f370bd27abe55a818e (diff)
downloadNim-2ab948ce53e3d9b80bf9b02644c8ec8991f34d0a.tar.gz
post expr blocks colon fix + correct grammar (#21983)
* post expr blocks colon fix + correct grammar

fixes #21982

* fix dochelpers

* this is remarkably common

* use head for unchained

* fix atlas

* final grammar fix
Diffstat (limited to 'lib/std/sysrand.nim')
0 files changed, 0 insertions, 0 deletions
 

generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2025-06-30 08:57:54 +0000


 


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/*
 *
 *           Nim's Runtime Library
 *       (c) Copyright 2017 Emery Hemingway
 *
 *   See the file "copying.txt", included in this
 *   distribution, for details about the copyright.
 *
 */

#ifndef _GENODE_CPP__SYSLOCKS_H_
#define _GENODE_CPP__SYSLOCKS_H_

/* Genode includes */
#include <base/semaphore.h>
#include <base/mutex.h>

namespace Nim {
	struct SysLock;
	struct SysCond;
}

struct Nim::SysLock
{
	Genode::Mutex _mutex_a, _mutex_b;
	bool         _locked;

	void acquireSys()
	{
		Genode::Mutex::Guard guard(_mutex_a);
		_locked = true;
		_mutex_b.acquire();
	}

	bool tryAcquireSys()
	{
		if (_locked)
			return false;

		Genode::Mutex::Guard guard(_mutex_a);

		if (_locked) {
			return false;
		} else {
			_locked = true;
			_mutex_b.acquire();
			return true;
		}
	}

	void releaseSys()
	{
		Genode::Mutex::Guard guard(_mutex_a);
		_locked = false;
		_mutex_b.release();
	}
};

struct Nim::SysCond
{
	Genode::Semaphore _semaphore;

	void waitSysCond(SysLock &syslock)
	{
		syslock.releaseSys();
		_semaphore.down();
		syslock.acquireSys();
	}

	void signalSysCond()
	{
		_semaphore.up();
	}

	void broadcastSysCond()
	{
		_semaphore.up();
	}
};

#endif