minetest/src/porting.cpp

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/*
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Minetest
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Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program 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 2.1 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
Random portability stuff
See comments in porting.h
*/
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#include "porting.h"
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#if defined(__FreeBSD__)
#include <sys/types.h>
#include <sys/sysctl.h>
#elif defined(_WIN32)
#include <algorithm>
#endif
#if !defined(_WIN32)
#include <unistd.h>
#include <sys/utsname.h>
#endif
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#if !defined(_WIN32) && !defined(__APPLE__) && \
!defined(__ANDROID__) && !defined(SERVER)
#define XORG_USED
#endif
#ifdef XORG_USED
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#endif
#include "config.h"
#include "debug.h"
#include "filesys.h"
#include "log.h"
#include "util/string.h"
#include "main.h"
#include "settings.h"
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#include <list>
namespace porting
{
/*
Signal handler (grabs Ctrl-C on POSIX systems)
*/
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bool g_killed = false;
bool * signal_handler_killstatus(void)
{
return &g_killed;
}
#if !defined(_WIN32) // POSIX
#include <signal.h>
void sigint_handler(int sig)
{
if(g_killed == false)
{
dstream<<DTIME<<"INFO: sigint_handler(): "
<<"Ctrl-C pressed, shutting down."<<std::endl;
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// Comment out for less clutter when testing scripts
/*dstream<<DTIME<<"INFO: sigint_handler(): "
<<"Printing debug stacks"<<std::endl;
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debug_stacks_print();*/
g_killed = true;
}
else
{
(void)signal(SIGINT, SIG_DFL);
}
}
void signal_handler_init(void)
{
(void)signal(SIGINT, sigint_handler);
}
#else // _WIN32
#include <signal.h>
BOOL WINAPI event_handler(DWORD sig)
{
switch(sig)
{
case CTRL_C_EVENT:
case CTRL_CLOSE_EVENT:
case CTRL_LOGOFF_EVENT:
case CTRL_SHUTDOWN_EVENT:
if(g_killed == false)
{
dstream<<DTIME<<"INFO: event_handler(): "
<<"Ctrl+C, Close Event, Logoff Event or Shutdown Event, shutting down."<<std::endl;
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// Comment out for less clutter when testing scripts
/*dstream<<DTIME<<"INFO: event_handler(): "
<<"Printing debug stacks"<<std::endl;
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debug_stacks_print();*/
g_killed = true;
}
else
{
(void)signal(SIGINT, SIG_DFL);
}
break;
case CTRL_BREAK_EVENT:
break;
}
return TRUE;
}
void signal_handler_init(void)
{
SetConsoleCtrlHandler( (PHANDLER_ROUTINE)event_handler,TRUE);
}
#endif
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/*
Multithreading support
*/
int getNumberOfProcessors() {
#if defined(_SC_NPROCESSORS_ONLN)
return sysconf(_SC_NPROCESSORS_ONLN);
#elif defined(__FreeBSD__) || defined(__APPLE__)
unsigned int len, count;
len = sizeof(count);
return sysctlbyname("hw.ncpu", &count, &len, NULL, 0);
#elif defined(_GNU_SOURCE)
return get_nprocs();
#elif defined(_WIN32)
SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
return sysinfo.dwNumberOfProcessors;
#elif defined(PTW32_VERSION) || defined(__hpux)
return pthread_num_processors_np();
#else
return 1;
#endif
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}
#ifndef __ANDROID__
bool threadBindToProcessor(threadid_t tid, int pnumber) {
#if defined(_WIN32)
HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, 0, tid);
if (!hThread)
return false;
bool success = SetThreadAffinityMask(hThread, 1 << pnumber) != 0;
CloseHandle(hThread);
return success;
#elif (defined(__FreeBSD__) && (__FreeBSD_version >= 702106)) \
|| defined(__linux) || defined(linux)
cpu_set_t cpuset;
CPU_ZERO(&cpuset);
CPU_SET(pnumber, &cpuset);
return pthread_setaffinity_np(tid, sizeof(cpuset), &cpuset) == 0;
#elif defined(__sun) || defined(sun)
return processor_bind(P_LWPID, MAKE_LWPID_PTHREAD(tid),
pnumber, NULL) == 0;
#elif defined(_AIX)
return bindprocessor(BINDTHREAD, (tid_t)tid, pnumber) == 0;
#elif defined(__hpux) || defined(hpux)
pthread_spu_t answer;
return pthread_processor_bind_np(PTHREAD_BIND_ADVISORY_NP,
&answer, pnumber, tid) == 0;
#elif defined(__APPLE__)
struct thread_affinity_policy tapol;
thread_port_t threadport = pthread_mach_thread_np(tid);
tapol.affinity_tag = pnumber + 1;
return thread_policy_set(threadport, THREAD_AFFINITY_POLICY,
(thread_policy_t)&tapol, THREAD_AFFINITY_POLICY_COUNT) == KERN_SUCCESS;
#else
return false;
#endif
}
#endif
bool threadSetPriority(threadid_t tid, int prio) {
#if defined(_WIN32)
HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, 0, tid);
if (!hThread)
return false;
bool success = SetThreadPriority(hThread, prio) != 0;
CloseHandle(hThread);
return success;
#else
struct sched_param sparam;
int policy;
if (pthread_getschedparam(tid, &policy, &sparam) != 0)
return false;
int min = sched_get_priority_min(policy);
int max = sched_get_priority_max(policy);
sparam.sched_priority = min + prio * (max - min) / THREAD_PRIORITY_HIGHEST;
return pthread_setschedparam(tid, policy, &sparam) == 0;
#endif
}
/*
Path mangler
*/
// Default to RUN_IN_PLACE style relative paths
std::string path_share = "..";
std::string path_user = "..";
std::string getDataPath(const char *subpath)
{
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return path_share + DIR_DELIM + subpath;
}
void pathRemoveFile(char *path, char delim)
{
// Remove filename and path delimiter
int i;
for(i = strlen(path)-1; i>=0; i--)
{
if(path[i] == delim)
break;
}
path[i] = 0;
}
bool detectMSVCBuildDir(char *c_path)
{
std::string path(c_path);
const char *ends[] = {
"bin\\Release",
"bin\\Debug",
"bin\\Build",
NULL};
return (removeStringEnd(path, ends) != "");
}
std::string get_sysinfo()
{
#ifdef _WIN32
OSVERSIONINFO osvi;
std::ostringstream oss;
std::string tmp;
ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&osvi);
tmp = osvi.szCSDVersion;
std::replace(tmp.begin(), tmp.end(), ' ', '_');
oss << "Windows/" << osvi.dwMajorVersion << "."
<< osvi.dwMinorVersion;
if(osvi.szCSDVersion[0])
oss << "-" << tmp;
oss << " ";
#ifdef _WIN64
oss << "x86_64";
#else
BOOL is64 = FALSE;
if(IsWow64Process(GetCurrentProcess(), &is64) && is64)
oss << "x86_64"; // 32-bit app on 64-bit OS
else
oss << "x86";
#endif
return oss.str();
#else
struct utsname osinfo;
uname(&osinfo);
return std::string(osinfo.sysname) + "/"
+ osinfo.release + " " + osinfo.machine;
#endif
}
void initializePaths()
{
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#if RUN_IN_PLACE
/*
Use relative paths if RUN_IN_PLACE
*/
infostream<<"Using relative paths (RUN_IN_PLACE)"<<std::endl;
/*
Windows
*/
#if defined(_WIN32)
const DWORD buflen = 1000;
char buf[buflen];
DWORD len;
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// Find path of executable and set path_share relative to it
len = GetModuleFileName(GetModuleHandle(NULL), buf, buflen);
assert(len < buflen);
pathRemoveFile(buf, '\\');
if(detectMSVCBuildDir(buf)){
infostream<<"MSVC build directory detected"<<std::endl;
path_share = std::string(buf) + "\\..\\..";
path_user = std::string(buf) + "\\..\\..";
}
else{
path_share = std::string(buf) + "\\..";
path_user = std::string(buf) + "\\..";
}
/*
Linux
*/
#elif defined(linux)
char buf[BUFSIZ];
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memset(buf, 0, BUFSIZ);
// Get path to executable
FATAL_ERROR_IF(readlink("/proc/self/exe", buf, BUFSIZ-1) == -1, "Failed to get cwd");
pathRemoveFile(buf, '/');
path_share = std::string(buf) + "/..";
path_user = std::string(buf) + "/..";
/*
OS X
*/
#elif defined(__APPLE__)
CFBundleRef main_bundle = CFBundleGetMainBundle();
CFURLRef resources_url = CFBundleCopyResourcesDirectoryURL(main_bundle);
char path[PATH_MAX];
if (CFURLGetFileSystemRepresentation(resources_url, TRUE, (UInt8 *)path, PATH_MAX)) {
path_share = std::string(path);
path_user = std::string(path) + "/../User";
} else {
dstream << "WARNING: Could not determine bundle resource path" << std::endl;
}
CFRelease(resources_url);
/*
FreeBSD
*/
#elif defined(__FreeBSD__)
int mib[4];
char buf[BUFSIZ];
size_t len = sizeof(buf);
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PATHNAME;
mib[3] = -1;
FATAL_ERROR_IF(sysctl(mib, 4, buf, &len, NULL, 0) == -1, "");
pathRemoveFile(buf, '/');
path_share = std::string(buf) + "/..";
path_user = std::string(buf) + "/..";
#else
//TODO: Get path of executable. This assumes working directory is bin/
dstream<<"WARNING: Relative path not properly supported on this platform"
<<std::endl;
/* scriptapi no longer allows paths that start with "..", so assuming that
the current working directory is bin/, strip off the last component. */
char *cwd = getcwd(NULL, 0);
pathRemoveFile(cwd, '/');
path_share = std::string(cwd);
path_user = std::string(cwd);
#endif
#else // RUN_IN_PLACE
/*
Use platform-specific paths otherwise
*/
infostream<<"Using system-wide paths (NOT RUN_IN_PLACE)"<<std::endl;
/*
Windows
*/
#if defined(_WIN32)
const DWORD buflen = 1000; // FIXME: Surely there is a better way to do this
char buf[buflen];
DWORD len;
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// Find path of executable and set path_share relative to it
len = GetModuleFileName(GetModuleHandle(NULL), buf, buflen);
FATAL_ERROR_IF(len >= buflen, "Overlow");
pathRemoveFile(buf, '\\');
// Use ".\bin\.."
path_share = std::string(buf) + "\\..";
// Use "C:\Documents and Settings\user\Application Data\<PROJECT_NAME>"
len = GetEnvironmentVariable("APPDATA", buf, buflen);
FATAL_ERROR_IF(len >= buflen, "Overlow");
path_user = std::string(buf) + DIR_DELIM + lowercase(PROJECT_NAME);
/*
Linux
*/
#elif defined(linux)
// Get path to executable
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std::string bindir = "";
{
char buf[BUFSIZ];
memset(buf, 0, BUFSIZ);
if (readlink("/proc/self/exe", buf, BUFSIZ-1) == -1) {
errorstream << "Unable to read bindir "<< std::endl;
#ifndef __ANDROID__
FATAL_ERROR("Unable to read bindir");
#endif
} else {
pathRemoveFile(buf, '/');
bindir = buf;
}
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}
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// Find share directory from these.
// It is identified by containing the subdirectory "builtin".
std::list<std::string> trylist;
std::string static_sharedir = STATIC_SHAREDIR;
if(static_sharedir != "" && static_sharedir != ".")
trylist.push_back(static_sharedir);
trylist.push_back(
bindir + DIR_DELIM + ".." + DIR_DELIM + "share" + DIR_DELIM + lowercase(PROJECT_NAME));
trylist.push_back(bindir + DIR_DELIM + "..");
#ifdef __ANDROID__
trylist.push_back(path_user);
#endif
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for(std::list<std::string>::const_iterator i = trylist.begin();
i != trylist.end(); i++)
{
const std::string &trypath = *i;
if(!fs::PathExists(trypath) || !fs::PathExists(trypath + DIR_DELIM + "builtin")){
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dstream<<"WARNING: system-wide share not found at \""
<<trypath<<"\""<<std::endl;
continue;
}
// Warn if was not the first alternative
if(i != trylist.begin()){
dstream<<"WARNING: system-wide share found at \""
<<trypath<<"\""<<std::endl;
}
path_share = trypath;
break;
}
#ifndef __ANDROID__
path_user = std::string(getenv("HOME")) + DIR_DELIM + "." + lowercase(PROJECT_NAME);
#endif
/*
OS X
*/
#elif defined(__APPLE__)
CFBundleRef main_bundle = CFBundleGetMainBundle();
CFURLRef resources_url = CFBundleCopyResourcesDirectoryURL(main_bundle);
char path[PATH_MAX];
if (CFURLGetFileSystemRepresentation(resources_url, TRUE, (UInt8 *)path, PATH_MAX)) {
path_share = std::string(path);
} else {
dstream << "WARNING: Could not determine bundle resource path" << std::endl;
}
CFRelease(resources_url);
path_user = std::string(getenv("HOME")) + "/Library/Application Support/" + lowercase(PROJECT_NAME);
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#else // FreeBSD, and probably many other POSIX-like systems.
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path_share = STATIC_SHAREDIR;
path_user = std::string(getenv("HOME")) + DIR_DELIM + "." + lowercase(PROJECT_NAME);
#endif
#endif // RUN_IN_PLACE
}
static irr::IrrlichtDevice *device;
void initIrrlicht(irr::IrrlichtDevice *device_)
{
device = device_;
}
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void setXorgClassHint(const video::SExposedVideoData &video_data,
const std::string &name)
{
#ifdef XORG_USED
if (video_data.OpenGLLinux.X11Display == NULL)
return;
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XClassHint *classhint = XAllocClassHint();
classhint->res_name = (char *)name.c_str();
classhint->res_class = (char *)name.c_str();
XSetClassHint((Display *)video_data.OpenGLLinux.X11Display,
video_data.OpenGLLinux.X11Window, classhint);
XFree(classhint);
#endif
}
#ifndef SERVER
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v2u32 getWindowSize()
{
return device->getVideoDriver()->getScreenSize();
}
std::vector<core::vector3d<u32> > getVideoModes()
{
std::vector<core::vector3d<u32> > mlist;
video::IVideoModeList *modelist = device->getVideoModeList();
u32 num_modes = modelist->getVideoModeCount();
for (u32 i = 0; i != num_modes; i++) {
core::dimension2d<u32> mode_res = modelist->getVideoModeResolution(i);
s32 mode_depth = modelist->getVideoModeDepth(i);
mlist.push_back(core::vector3d<u32>(mode_res.Width, mode_res.Height, mode_depth));
}
return mlist;
}
std::vector<irr::video::E_DRIVER_TYPE> getSupportedVideoDrivers()
{
std::vector<irr::video::E_DRIVER_TYPE> drivers;
for (int i = 0; i != irr::video::EDT_COUNT; i++) {
if (irr::IrrlichtDevice::isDriverSupported((irr::video::E_DRIVER_TYPE)i))
drivers.push_back((irr::video::E_DRIVER_TYPE)i);
}
return drivers;
}
const char *getVideoDriverName(irr::video::E_DRIVER_TYPE type)
{
static const char *driver_ids[] = {
"null",
"software",
"burningsvideo",
"direct3d8",
"direct3d9",
"opengl",
"ogles1",
"ogles2",
};
return driver_ids[type];
}
const char *getVideoDriverFriendlyName(irr::video::E_DRIVER_TYPE type)
{
static const char *driver_names[] = {
"NULL Driver",
"Software Renderer",
"Burning's Video",
"Direct3D 8",
"Direct3D 9",
"OpenGL",
"OpenGL ES1",
"OpenGL ES2",
};
return driver_names[type];
}
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#ifndef __ANDROID__
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#ifdef XORG_USED
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static float calcDisplayDensity()
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{
const char* current_display = getenv("DISPLAY");
if (current_display != NULL) {
Display * x11display = XOpenDisplay(current_display);
if (x11display != NULL) {
/* try x direct */
float dpi_height =
floor(DisplayHeight(x11display, 0) /
(DisplayHeightMM(x11display, 0) * 0.039370) + 0.5);
float dpi_width =
floor(DisplayWidth(x11display, 0) /
(DisplayWidthMM(x11display, 0) * 0.039370) +0.5);
XCloseDisplay(x11display);
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return std::max(dpi_height,dpi_width) / 96.0;
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}
}
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/* return manually specified dpi */
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return g_settings->getFloat("screen_dpi")/96.0;
}
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float getDisplayDensity()
{
static float cached_display_density = calcDisplayDensity();
return cached_display_density;
}
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#else
float getDisplayDensity()
{
return g_settings->getFloat("screen_dpi")/96.0;
}
#endif
v2u32 getDisplaySize()
{
IrrlichtDevice *nulldevice = createDevice(video::EDT_NULL);
core::dimension2d<u32> deskres = nulldevice->getVideoModeList()->getDesktopResolution();
nulldevice -> drop();
return deskres;
}
#endif
#endif
} //namespace porting