server/include/devel.h

/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 * 
 * Copyright (©) 2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 * 
 * Deliantra is free software: you can redistribute it and/or modify it under
 * the terms of the Affero GNU General Public License as published by the
 * Free Software Foundation, either version 3 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 General Public License for more details.
 * 
 * You should have received a copy of the Affero GNU General Public License
 * and the GNU General Public License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 * 
 * The authors can be reached via e-mail to <support@deliantra.net>
 */

// This file is only included with -DDEVEL, and is only part
// of the distributon for completeness, it is not supposed to
// be useful outside the developers machines.

#ifndef DEVEL_H
#define DEVEL_H

// used for benchmarking (x86/amd64-specific)
#ifdef DEVEL64
typedef uint64_t cstamp;
#else
typedef uint32_t cstamp;
#endif

#if defined(__i386__) || defined(__x86_64__)

static inline cstamp
stamp ()
{
  uint32_t l, h;

  asm volatile ("rdtsc" : "=a" (l), "=d" (h));

#ifdef DEVEL64
  return ((cstamp)h << 32) | l;
#else
  return l;
#endif
}

#elif defined(__powerpc__)
static inline cstamp
stamp ()
{
  unsigned uint32_t u, l, tmp;

  asm volatile (
     "0:             \n"
     "\tmftbu   %0   \n"
     "\tmftb    %1   \n"
     "\tmftbu   %2   \n"
     "\tcmpw    %2,%0\n"
     "\tbne     0b   \n"
     : "=r" (h), "=r" (l), "=r" (tmp)
  );

#ifdef DEVEL64
  return ((cstamp)h << 32) | l;
#else
  return l;
#endif
}

#endif

static inline cstamp
measure (cstamp t)
{
  return stamp () - t;
}

// cstamp s = stamp ();
// s = measure (s);

#endif

Revision:	1.6
Committed:	Fri Mar 26 01:04:44 2010 UTC (14 years, 2 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-3_0
Changes since 1.5:	+1 -1 lines
Log Message:	update copyright for up to 2010
#	User	Rev	Content
1	root	1.1	/*
2			* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3			*
4	root	1.6	* Copyright (©) 2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	root	1.1	*
6	root	1.4	* Deliantra is free software: you can redistribute it and/or modify it under
7			* the terms of the Affero GNU General Public License as published by the
8			* Free Software Foundation, either version 3 of the License, or (at your
9			* option) any later version.
10	root	1.1	*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16	root	1.4	* You should have received a copy of the Affero GNU General Public License
17			* and the GNU General Public License along with this program. If not, see
18			* <http://www.gnu.org/licenses/>.
19	root	1.1	*
20			* The authors can be reached via e-mail to <support@deliantra.net>
21			*/
22
23			// This file is only included with -DDEVEL, and is only part
24			// of the distributon for completeness, it is not supposed to
25			// be useful outside the developers machines.
26
27			#ifndef DEVEL_H
28			#define DEVEL_H
29
30			// used for benchmarking (x86/amd64-specific)
31	root	1.3	#ifdef DEVEL64
32			typedef uint64_t cstamp;
33			#else
34			typedef uint32_t cstamp;
35			#endif
36
37			#if defined(__i386__) \|\| defined(__x86_64__)
38	root	1.1
39			static inline cstamp
40	root	1.5	stamp ()
41	root	1.1	{
42	root	1.3	uint32_t l, h;
43
44			asm volatile ("rdtsc" : "=a" (l), "=d" (h));
45
46			#ifdef DEVEL64
47			return ((cstamp)h << 32) \| l;
48			#else
49			return l;
50			#endif
51	root	1.1	}
52
53	root	1.3	#elif defined(__powerpc__)
54			static inline cstamp
55	root	1.5	stamp ()
56	root	1.3	{
57			unsigned uint32_t u, l, tmp;
58
59			asm volatile (
60			"0: \n"
61			"\tmftbu %0 \n"
62			"\tmftb %1 \n"
63			"\tmftbu %2 \n"
64			"\tcmpw %2,%0\n"
65			"\tbne 0b \n"
66			: "=r" (h), "=r" (l), "=r" (tmp)
67			);
68
69			#ifdef DEVEL64
70			return ((cstamp)h << 32) \| l;
71			#else
72			return l;
73			#endif
74			}
75
76			#endif
77
78	root	1.1	static inline cstamp
79			measure (cstamp t)
80			{
81	root	1.2	return stamp () - t;
82	root	1.1	}
83
84			// cstamp s = stamp ();
85			// s = measure (s);
86
87			#endif
88