~zooko/cryptopp/trunk

// trdlocal.cpp - written and placed in the public domain by Wei Dai

#include "pch.h"

#ifndef CRYPTOPP_IMPORTS

#ifdef THREADS_AVAILABLE

#include "trdlocal.h"

#ifdef HAS_WINTHREADS

#include <windows.h>

#endif

NAMESPACE_BEGIN(CryptoPP)

ThreadLocalStorage::Err::Err(const std::string& operation, int error)

	: OS_Error(OTHER_ERROR, "ThreadLocalStorage: " + operation + " operation failed with error 0x" + IntToString(error, 16), operation, error)

{

}

ThreadLocalStorage::ThreadLocalStorage()

{

#ifdef HAS_WINTHREADS

	m_index = TlsAlloc();

	if (m_index == TLS_OUT_OF_INDEXES)

		throw Err("TlsAlloc", GetLastError());

#else

	int error = pthread_key_create(&m_index, NULL);

	if (error)

		throw Err("pthread_key_create", error);

#endif

}

ThreadLocalStorage::~ThreadLocalStorage()

{

#ifdef HAS_WINTHREADS

	if (!TlsFree(m_index))

		throw Err("TlsFree", GetLastError());

#else

	int error = pthread_key_delete(m_index);

	if (error)

		throw Err("pthread_key_delete", error);

#endif

}

void ThreadLocalStorage::SetValue(void *value)

{

#ifdef HAS_WINTHREADS

	if (!TlsSetValue(m_index, value))

		throw Err("TlsSetValue", GetLastError());

#else

	int error = pthread_setspecific(m_index, value);

	if (error)

		throw Err("pthread_key_getspecific", error);

#endif

}

void *ThreadLocalStorage::GetValue() const

{

#ifdef HAS_WINTHREADS

	void *result = TlsGetValue(m_index);

	if (!result && GetLastError() != NO_ERROR)

		throw Err("TlsGetValue", GetLastError());

#else

	void *result = pthread_getspecific(m_index);

#endif

	return result;

}

NAMESPACE_END

#endif	// #ifdef THREADS_AVAILABLE

#endif