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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* memchecker.cc
*
* Sat Jan 16 18:27:52 CET 2016
* Copyright 2016 André Nusser
* andre.nusser@googlemail.com
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* DrumGizmo is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "memchecker.h"
#include "platform.h"
#if DG_PLATFORM == DG_PLATFORM_LINUX
#include <sys/sysinfo.h>
#elif DG_PLATFORM == DG_PLATFORM_OSX
#include <mach/vm_statistics.h>
#include <mach/mach_types.h>
#include <mach/mach_init.h>
#include <mach/mach_host.h>
#elif DG_PLATFORM == DG_PLATFORM_FREEBSD
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/vmmeter.h>
#endif
#include <sndfile.h>
#include <hugin.hpp>
bool MemChecker::enoughFreeMemory(const DrumKit& drumkit) const
{
uint64_t free_memory = calcFreeMemory();
uint64_t needed_memory = calcNeededMemory(drumkit);
return free_memory >= needed_memory;
}
uint64_t MemChecker::calcFreeMemory() const
{
uint64_t free_memory = 0;
// Platform specific calculation of the amount of free memory.
#if DG_PLATFORM == DG_PLATFORM_LINUX
struct sysinfo sys_info;
sysinfo(&sys_info);
free_memory = sys_info.freeram * sys_info.mem_unit;
#elif DG_PLATFORM == DG_PLATFORM_WINDOWS
MEMORYSTATUSEX status;
status.dwLength = sizeof(status);
GlobalMemoryStatusEx(&status);
free_memory = status.ullAvailPhys;
#elif DG_PLATFORM == DG_PLATFORM_OSX
vm_size_t page_size;
vm_statistics64_data_t vm_stats;
mach_port_t mach_port = mach_host_self();
mach_msg_type_number_t count = sizeof(vm_stats) / sizeof(natural_t);
if (KERN_SUCCESS == host_page_size(mach_port, &page_size) &&
KERN_SUCCESS == host_statistics64(mach_port, HOST_VM_INFO, (host_info64_t)&vm_stats, &count))
{
free_memory = (uint64_t)vm_stats.free_count * (uint64_t)page_size;
}
#elif DG_PLATFORM == DG_PLATFORM_FREEBSD
u_int page_size;
struct vmtotal vmt;
size_t vmt_size, uint_size;
vmt_size = sizeof(vmt);
uint_size = sizeof(page_size);
sysctlbyname("vm.vmtotal", &vmt, &vmt_size, NULL, 0);
sysctlbyname("vm.stats.vm.v_page_size", &page_size, &uint_size, NULL, 0);
free_memory = vmt.t_free * (u_int64_t)page_size;
#elif DG_PLATFORM == DG_PLATFORM_UNIX
// TODO
#endif
DEBUG(memchecker, "Calculated %" PRIu64 " free memory.\n", free_memory);
return free_memory;
}
uint64_t MemChecker::calcNeededMemory(const DrumKit& drumkit) const
{
uint64_t needed_memory = 0;
// Calculate memory usage of all instruments of drumkit.
for(auto& instr_ptr: drumkit.instruments)
{
const auto& audiofiles = instr_ptr->audiofiles;
// Calculate memory usage of all audiofiles.
for(auto& audiofile: audiofiles)
{
needed_memory += calcBytesPerChannel(audiofile->filename);
}
}
DEBUG(memchecker, "Calculated %" PRIu64 " needed memory.\n", needed_memory);
return needed_memory;
}
uint64_t MemChecker::calcBytesPerChannel(const std::string& filename) const
{
SF_INFO sf_info{};
SNDFILE* f = sf_open(filename.c_str(), SFM_READ, &sf_info);
if(!f)
{
ERR(memchecker, "SNDFILE Error (%s): %s\n",
filename.c_str(), sf_strerror(f));
return 0;
}
sf_close(f);
return sf_info.frames * sizeof(sample_t);
}
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