summaryrefslogtreecommitdiff
path: root/src/porting.cpp
blob: 8a685539b20d13cbaee599d3b01706a905ee3c85 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
/*
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

	See comments in porting.h
*/

#include "porting.h"

#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

#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"
#include <list>

namespace porting
{

/*
	Signal handler (grabs Ctrl-C on POSIX systems)
*/

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;

		// Comment out for less clutter when testing scripts
		/*dstream<<DTIME<<"INFO: sigint_handler(): "
				<<"Printing debug stacks"<<std::endl;
		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;
				// Comment out for less clutter when testing scripts
				/*dstream<<DTIME<<"INFO: event_handler(): "
						<<"Printing debug stacks"<<std::endl;
				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


/*
	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
}


#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)
{
	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()
{
#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;

	// 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];
	memset(buf, 0, BUFSIZ);
	// Get path to executable
	assert(readlink("/proc/self/exe", buf, BUFSIZ-1) != -1);

	pathRemoveFile(buf, '/');

	path_share = std::string(buf) + "/..";
	path_user = std::string(buf) + "/..";

	/*
		OS X
	*/
	#elif defined(__APPLE__)

	//https://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/dyld.3.html
	//TODO: Test this code
	char buf[BUFSIZ];
	uint32_t len = sizeof(buf);
	assert(_NSGetExecutablePath(buf, &len) != -1);

	pathRemoveFile(buf, '/');

	path_share = std::string(buf) + "/..";
	path_user = std::string(buf) + "/..";

	/*
		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;
	assert(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;
	char buf[buflen];
	DWORD len;

	// Find path of executable and set path_share relative to it
	len = GetModuleFileName(GetModuleHandle(NULL), buf, buflen);
	assert(len < buflen);
	pathRemoveFile(buf, '\\');

	// Use ".\bin\.."
	path_share = std::string(buf) + "\\..";

	// Use "C:\Documents and Settings\user\Application Data\<PROJECT_NAME>"
	len = GetEnvironmentVariable("APPDATA", buf, buflen);
	assert(len < buflen);
	path_user = std::string(buf) + DIR_DELIM + PROJECT_NAME;

	/*
		Linux
	*/
	#elif defined(linux)

	// Get path to executable
	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__
			assert("Unable to read bindir" == 0);
#endif
		} else {
			pathRemoveFile(buf, '/');
			bindir = buf;
		}
	}

	// 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 + PROJECT_NAME);
	trylist.push_back(bindir + DIR_DELIM + "..");
#ifdef __ANDROID__
	trylist.push_back(path_user);
#endif

	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")){
			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 + "." + PROJECT_NAME;
#endif

	/*
		OS X
	*/
	#elif defined(__APPLE__)

	// Code based on
	// http://stackoverflow.com/questions/516200/relative-paths-not-working-in-xcode-c
	CFBundleRef main_bundle = CFBundleGetMainBundle();
	CFURLRef resources_url = CFBundleCopyResourcesDirectoryURL(main_bundle);
	char path[PATH_MAX];
	if(CFURLGetFileSystemRepresentation(resources_url, TRUE, (UInt8 *)path, PATH_MAX))
	{
		dstream<<"Bundle resource path: "<<path<<std::endl;
		//chdir(path);
		path_share = std::string(path) + DIR_DELIM + STATIC_SHAREDIR;
	}
	else
	{
		// error!
		dstream<<"WARNING: Could not determine bundle resource path"<<std::endl;
	}
	CFRelease(resources_url);

	path_user = std::string(getenv("HOME")) + "/Library/Application Support/" + PROJECT_NAME;

	#else // FreeBSD, and probably many other POSIX-like systems.

	path_share = STATIC_SHAREDIR;
	path_user = std::string(getenv("HOME")) + DIR_DELIM + "." + PROJECT_NAME;

	#endif

#endif // RUN_IN_PLACE
}

static irr::IrrlichtDevice *device;

void initIrrlicht(irr::IrrlichtDevice *device_)
{
	device = device_;
}

void setXorgClassHint(const video::SExposedVideoData &video_data,
	const std::string &name)
{
#ifdef XORG_USED
	if (video_data.OpenGLLinux.X11Display == NULL)
		return;

	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
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];
}


#ifndef __ANDROID__
#ifdef XORG_USED

static float calcDisplayDensity()
{
	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);

				return std::max(dpi_height,dpi_width) / 96.0;
			}
		}

	/* return manually specified dpi */
	return g_settings->getFloat("screen_dpi")/96.0;
}


float getDisplayDensity()
{
	static float cached_display_density = calcDisplayDensity();
	return cached_display_density;
}


#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