minetest/src/porting.h
2016-01-29 10:54:50 -05:00

379 lines
8.7 KiB
C++

/*
Minetest
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
*/
#ifndef PORTING_HEADER
#define PORTING_HEADER
#ifdef _WIN32
#ifdef _WIN32_WINNT
#undef _WIN32_WINNT
#endif
#define _WIN32_WINNT 0x0501 // We need to do this before any other headers
// because those might include sdkddkver.h which defines _WIN32_WINNT if not already set
#endif
#include <string>
#include <vector>
#include "irrlicht.h"
#include "irrlichttypes.h" // u32
#include "irrlichttypes_extrabloated.h"
#include "debug.h"
#include "constants.h"
#include "gettime.h"
#include "threads.h"
#ifdef _MSC_VER
#define SWPRINTF_CHARSTRING L"%S"
#else
#define SWPRINTF_CHARSTRING L"%s"
#endif
//currently not needed
//template<typename T> struct alignment_trick { char c; T member; };
//#define ALIGNOF(type) offsetof (alignment_trick<type>, member)
#ifdef _WIN32
#include <windows.h>
#define sleep_ms(x) Sleep(x)
#else
#include <unistd.h>
#include <stdint.h> //for uintptr_t
#if (defined(linux) || defined(__linux) || defined(__GNU__)) && !defined(_GNU_SOURCE)
#define _GNU_SOURCE
#endif
#define sleep_ms(x) usleep(x*1000)
#endif
#ifdef _MSC_VER
#define ALIGNOF(x) __alignof(x)
#define strtok_r(x, y, z) strtok_s(x, y, z)
#define strtof(x, y) (float)strtod(x, y)
#define strtoll(x, y, z) _strtoi64(x, y, z)
#define strtoull(x, y, z) _strtoui64(x, y, z)
#define strcasecmp(x, y) stricmp(x, y)
#define strncasecmp(x, y, n) strnicmp(x, y, n)
#else
#define ALIGNOF(x) __alignof__(x)
#endif
#ifdef __MINGW32__
#define strtok_r(x, y, z) mystrtok_r(x, y, z)
#endif
// strlcpy is missing from glibc. thanks a lot, drepper.
// strlcpy is also missing from AIX and HP-UX because they aim to be weird.
// We can't simply alias strlcpy to MSVC's strcpy_s, since strcpy_s by
// default raises an assertion error and aborts the program if the buffer is
// too small.
#if defined(__FreeBSD__) || defined(__NetBSD__) || \
defined(__OpenBSD__) || defined(__DragonFly__) || \
defined(__APPLE__) || \
defined(__sun) || defined(sun) || \
defined(__QNX__) || defined(__QNXNTO__)
#define HAVE_STRLCPY
#endif
// So we need to define our own.
#ifndef HAVE_STRLCPY
#define strlcpy(d, s, n) mystrlcpy(d, s, n)
#endif
#define PADDING(x, y) ((ALIGNOF(y) - ((uintptr_t)(x) & (ALIGNOF(y) - 1))) & (ALIGNOF(y) - 1))
#if defined(__APPLE__)
#include <mach-o/dyld.h>
#include <CoreFoundation/CoreFoundation.h>
#endif
#ifndef _WIN32 // Posix
#include <sys/time.h>
#include <time.h>
#if defined(__MACH__) && defined(__APPLE__)
#include <mach/clock.h>
#include <mach/mach.h>
#endif
#endif
namespace porting
{
/*
Signal handler (grabs Ctrl-C on POSIX systems)
*/
void signal_handler_init(void);
// Returns a pointer to a bool.
// When the bool is true, program should quit.
bool * signal_handler_killstatus(void);
/*
Path of static data directory.
*/
extern std::string path_share;
/*
Directory for storing user data. Examples:
Windows: "C:\Documents and Settings\user\Application Data\<PROJECT_NAME>"
Linux: "~/.<PROJECT_NAME>"
Mac: "~/Library/Application Support/<PROJECT_NAME>"
*/
extern std::string path_user;
/*
Path to gettext locale files
*/
extern std::string path_locale;
/*
Path to directory for storing caches.
*/
extern std::string path_cache;
/*
Get full path of stuff in data directory.
Example: "stone.png" -> "../data/stone.png"
*/
std::string getDataPath(const char *subpath);
/*
Move cache folder from path_user to the
system cache location if possible.
*/
void migrateCachePath();
/*
Initialize path_*.
*/
void initializePaths();
/*
Return system information
e.g. "Linux/3.12.7 x86_64"
*/
std::string get_sysinfo();
void initIrrlicht(irr::IrrlichtDevice * );
/*
Resolution is 10-20ms.
Remember to check for overflows.
Overflow can occur at any value higher than 10000000.
*/
#ifdef _WIN32 // Windows
inline u32 getTimeS()
{
return GetTickCount() / 1000;
}
inline u32 getTimeMs()
{
return GetTickCount();
}
inline u32 getTimeUs()
{
LARGE_INTEGER freq, t;
QueryPerformanceFrequency(&freq);
QueryPerformanceCounter(&t);
return (double)(t.QuadPart) / ((double)(freq.QuadPart) / 1000000.0);
}
inline u32 getTimeNs()
{
LARGE_INTEGER freq, t;
QueryPerformanceFrequency(&freq);
QueryPerformanceCounter(&t);
return (double)(t.QuadPart) / ((double)(freq.QuadPart) / 1000000000.0);
}
#else // Posix
inline void _os_get_clock(struct timespec *ts)
{
#if defined(__MACH__) && defined(__APPLE__)
// from http://stackoverflow.com/questions/5167269/clock-gettime-alternative-in-mac-os-x
// OS X does not have clock_gettime, use clock_get_time
clock_serv_t cclock;
mach_timespec_t mts;
host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
clock_get_time(cclock, &mts);
mach_port_deallocate(mach_task_self(), cclock);
ts->tv_sec = mts.tv_sec;
ts->tv_nsec = mts.tv_nsec;
#elif defined(CLOCK_MONOTONIC_RAW)
clock_gettime(CLOCK_MONOTONIC_RAW, ts);
#elif defined(_POSIX_MONOTONIC_CLOCK)
clock_gettime(CLOCK_MONOTONIC, ts);
#else
struct timeval tv;
gettimeofday(&tv, NULL);
TIMEVAL_TO_TIMESPEC(&tv, ts);
#endif // defined(__MACH__) && defined(__APPLE__)
}
// Note: these clock functions do not return wall time, but
// generally a clock that starts at 0 when the process starts.
inline u32 getTimeS()
{
struct timespec ts;
_os_get_clock(&ts);
return ts.tv_sec;
}
inline u32 getTimeMs()
{
struct timespec ts;
_os_get_clock(&ts);
return ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
}
inline u32 getTimeUs()
{
struct timespec ts;
_os_get_clock(&ts);
return ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
}
inline u32 getTimeNs()
{
struct timespec ts;
_os_get_clock(&ts);
return ts.tv_sec * 1000000000 + ts.tv_nsec;
}
/*#include <sys/timeb.h>
inline u32 getTimeMs()
{
struct timeb tb;
ftime(&tb);
return tb.time * 1000 + tb.millitm;
}*/
#endif
inline u32 getTime(TimePrecision prec)
{
switch (prec) {
case PRECISION_SECONDS:
return getTimeS();
case PRECISION_MILLI:
return getTimeMs();
case PRECISION_MICRO:
return getTimeUs();
case PRECISION_NANO:
return getTimeNs();
}
return 0;
}
/**
* Delta calculation function taking two 32bit arguments.
* @param old_time_ms old time for delta calculation (order is relevant!)
* @param new_time_ms new time for delta calculation (order is relevant!)
* @return positive 32bit delta value
*/
inline u32 getDeltaMs(u32 old_time_ms, u32 new_time_ms)
{
if (new_time_ms >= old_time_ms) {
return (new_time_ms - old_time_ms);
} else {
return (old_time_ms - new_time_ms);
}
}
#ifndef SERVER
float getDisplayDensity();
v2u32 getDisplaySize();
v2u32 getWindowSize();
std::vector<core::vector3d<u32> > getSupportedVideoModes();
std::vector<irr::video::E_DRIVER_TYPE> getSupportedVideoDrivers();
const char *getVideoDriverName(irr::video::E_DRIVER_TYPE type);
const char *getVideoDriverFriendlyName(irr::video::E_DRIVER_TYPE type);
#endif
inline const char *getPlatformName()
{
return
#if defined(ANDROID)
"Android"
#elif defined(linux) || defined(__linux) || defined(__linux__)
"Linux"
#elif defined(_WIN32) || defined(_WIN64)
"Windows"
#elif defined(__DragonFly__) || defined(__FreeBSD__) || \
defined(__NetBSD__) || defined(__OpenBSD__)
"BSD"
#elif defined(__APPLE__) && defined(__MACH__)
#if TARGET_OS_MAC
"OSX"
#elif TARGET_OS_IPHONE
"iOS"
#else
"Apple"
#endif
#elif defined(_AIX)
"AIX"
#elif defined(__hpux)
"HP-UX"
#elif defined(__sun) || defined(sun)
#if defined(__SVR4)
"Solaris"
#else
"SunOS"
#endif
#elif defined(__CYGWIN__)
"Cygwin"
#elif defined(__unix__) || defined(__unix)
#if defined(_POSIX_VERSION)
"Posix"
#else
"Unix"
#endif
#else
"?"
#endif
;
}
void setXorgClassHint(const video::SExposedVideoData &video_data,
const std::string &name);
// This only needs to be called at the start of execution, since all future
// threads in the process inherit this exception handler
void setWin32ExceptionHandler();
bool secure_rand_fill_buf(void *buf, size_t len);
} // namespace porting
#ifdef __ANDROID__
#include "porting_android.h"
#endif
#endif // PORTING_HEADER