This file is indexed.

/usr/include/pgm-5.1/pgm/atomic.h is in libpgm-dev 5.1.118-1~dfsg-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  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
/* vim:ts=8:sts=8:sw=4:noai:noexpandtab
 * 
 * 32-bit atomic operations.
 *
 * NB: XADD requires 80486 microprocessor.
 *
 * This library 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 library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#if defined(_MSC_VER) && (_MSC_VER >= 1200)
#	pragma once
#endif
#ifndef __PGM_ATOMIC_H__
#define __PGM_ATOMIC_H__

#if defined( __sun )
#	include <atomic.h>
#elif defined( __APPLE__ )
#	include <libkern/OSAtomic.h>
#elif defined( _MSC_VER )
/* not implemented in MinGW */
#	include <intrin.h>
#endif
#include <pgm/types.h>


/* 32-bit word addition returning original atomic value.
 *
 * 	uint32_t tmp = *atomic;
 * 	*atomic += val;
 * 	return tmp;
 */

static inline
uint32_t
pgm_atomic_exchange_and_add32 (
	volatile uint32_t*	atomic,
	const uint32_t		val
	)
{
#if defined( __GNUC__ ) && ( defined( __i386__ ) || defined( __x86_64__ ) )
	uint32_t result;
	__asm__ volatile ("lock; xaddl %0, %1"
		        : "=r" (result), "=m" (*atomic)
		        : "0" (val), "m" (*atomic)
		        : "memory", "cc"  );
	return result;
#elif (defined( __SUNPRO_C ) || defined( __SUNPRO_CC )) && (defined( __i386 ) || defined( __amd64 ))
	uint32_t result = val;
	__asm__ volatile ("lock; xaddl %0, %1"
		       :: "r" (result), "m" (*atomic)  );
	return result;
#elif defined( __sun )
/* Solaris intrinsic */
	const uint32_t nv = atomic_add_32_nv (atomic, (int32_t)val);
	return nv - val;
#elif defined( __APPLE__ )
/* Darwin intrinsic */
	const uint32_t nv = OSAtomicAdd32Barrier ((int32_t)val, (volatile int32_t*)atomic);
	return nv - val;
#elif defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )
/* GCC 4.0.1 intrinsic */
	return __sync_fetch_and_add (atomic, val);
#elif defined( _WIN32 )
/* Windows intrinsic */
	return _InterlockedExchangeAdd ((volatile LONG*)atomic, val);
#else
#	error "No supported atomic operations for this platform."
#endif
}

/* 32-bit word addition.
 *
 * 	*atomic += val;
 */

static inline
void
pgm_atomic_add32 (
	volatile uint32_t*	atomic,
	const uint32_t		val
	)
{
#if defined( __GNUC__ ) && ( defined( __i386__ ) || defined( __x86_64__ ) )
	__asm__ volatile ("lock; addl %1, %0"
		        : "=m" (*atomic)
		        : "ir" (val), "m" (*atomic)
		        : "memory", "cc"  );
#elif (defined( __SUNPRO_C ) || defined( __SUNPRO_CC )) && (defined( __i386 ) || defined( __amd64 ))
	__asm__ volatile ("lock; addl %1, %0"
		       :: "r" (val), "m" (*atomic)  );
#elif defined( __sun )
	atomic_add_32 (atomic, (int32_t)val);
#elif defined( __APPLE__ )
	OSAtomicAdd32Barrier ((int32_t)val, (volatile int32_t*)atomic);
#elif defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )
/* interchangable with __sync_fetch_and_add () */
	__sync_add_and_fetch (atomic, val);
#elif defined( _WIN32 )
	_InterlockedExchangeAdd ((volatile LONG*)atomic, val);
#endif
}

/* 32-bit word increment.
 *
 * 	*atomic++;
 */

static inline
void
pgm_atomic_inc32 (
	volatile uint32_t*	atomic
	)
{
#if defined( __GNUC__ ) && (defined( __i386__ ) || defined( __x86_64__ ))
	__asm__ volatile ("lock; incl %0"
		        : "+m" (*atomic)
		        :
		        : "memory", "cc"  );
#elif (defined( __SUNPRO_C ) || defined( __SUNPRO_CC )) && (defined( __i386 ) || defined( __amd64 ))
	__asm__ volatile ("lock; incl %0"
		       :: "m" (*atomic)  );
#elif defined( __sun )
	atomic_inc_32 (atomic);
#elif defined( __APPLE__ )
	OSAtomicIncrement32Barrier ((volatile int32_t*)atomic);
#elif defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )
	pgm_atomic_add32 (atomic, 1);
#elif defined( _WIN32 )
	_InterlockedIncrement ((volatile LONG*)atomic);
#endif
}

/* 32-bit word decrement.
 *
 * 	*atomic--;
 */

static inline
void
pgm_atomic_dec32 (
	volatile uint32_t*	atomic
	)
{
#if defined( __GNUC__ ) && (defined( __i386__ ) || defined( __x86_64__ ))
	__asm__ volatile ("lock; decl %0"
		        : "+m" (*atomic)
		        :
		        : "memory", "cc"  );
#elif (defined( __SUNPRO_C ) || defined( __SUNPRO_CC )) && (defined( __i386 ) || defined( __amd64 ))
	__asm__ volatile ("lock\n\t"
			  "decl %0"
		       :: "m" (*atomic)  );
#elif defined( __sun )
	atomic_dec_32 (atomic);
#elif defined( __APPLE__ )
	OSAtomicDecrement32Barrier ((volatile int32_t*)atomic);
#elif defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )
	pgm_atomic_add32 (atomic, (uint32_t)-1);
#elif defined( _WIN32 )
	_InterlockedDecrement ((volatile LONG*)atomic);
#endif
}

/* 32-bit word load 
 */

static inline
uint32_t
pgm_atomic_read32 (
	const volatile uint32_t* atomic
	)
{
	return *atomic;
}

/* 32-bit word store
 */

static inline
void
pgm_atomic_write32 (
	volatile uint32_t*	atomic,
	const uint32_t		val
	)
{
	*atomic = val;
}

#endif /* __PGM_ATOMIC_H__ */