#ifndef GLTB_SYSTEMINFO_H
#define GLTB_SYSTEMINFO_H

#include <string>

namespace gltb {
	/**
	 * Return number of CPU cores in the machine.
	 */
	unsigned int numberOfProcessors();

	/**
	 * Return the number of NUMA nodes in the machine.
	 */
	unsigned int numberOfNumaNodes();

	/**
	 * Return the amount of memory (in bytes) assigned to a NUMA node.
	 */
	unsigned long long numaNodeMemorySize(unsigned int node);

	/**
	 * Return the NUMA node that the given CPU is part of.
	 */
	unsigned int numaNodeOfProcessor(unsigned int cpu);

	/**
	 * Return the total physical RAM installed in the machine (in bytes).
	 */
	unsigned long long totalPhysicalMemory();
	/**
	 * Return the current amount of unused physical memory in the machine (in
	 * bytes).
	 */
	unsigned long long freePhysicalMemory();
	/**
	 * Return the total amount of swap space in the machine (in bytes)
	 */
	unsigned long long totalSwapMemory();
	/**
	 * Return the current amount of unused swap space in the machine (in bytes).
	 */
	unsigned long long freeSwapMemory();
	
	/**
	 * Return the size of the cache line for the processors in the machine.
	 * This is a slow function. It is recommended that you cache the result.
	 */
	int getDataCacheLineSize();

	/**
	 * Return the user's home directory for the current platform.
	 */
	std::wstring userDataDirectory();
}

#endif