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/* -*- c++ -*- */
/*
* Copyright 2003,2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gnuradio/logger.h>
#include <gnuradio/prefs.h>
#include "pagesize.h"
#include <stdio.h>
#include <unistd.h>
namespace gr {
#if defined(_WIN32) && defined(HAVE_GETPAGESIZE)
extern "C" size_t getpagesize(void);
#endif
int pagesize()
{
static int s_pagesize = -1;
gr::logger_ptr logger, debug_logger;
gr::configure_default_loggers(logger, debug_logger, "pagesize");
if (s_pagesize == -1) {
#if defined(HAVE_GETPAGESIZE)
s_pagesize = getpagesize();
#elif defined(HAVE_SYSCONF)
s_pagesize = sysconf(_SC_PAGESIZE);
if (s_pagesize == -1) {
GR_LOG_ERROR(logger, boost::format("_SC_PAGESIZE: %s") strerror(errno));
s_pagesize = 4096;
}
#else
GR_LOG_ERROR(logger, "no info; setting pagesize = 4096");
s_pagesize = 4096;
#endif
}
return s_pagesize;
}
} /* namespace gr */
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