1 /*
2  * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without modification,
6  * are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice,
9  *    this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright notice,
11  *    this list of conditions and the following disclaimer in the documentation
12  *    and/or other materials provided with the distribution.
13  * 3. The name of the author may not be used to endorse or promote products
14  *    derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
21  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
24  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
25  * OF SUCH DAMAGE.
26  *
27  * This file is part of the lwIP TCP/IP stack.
28  *
29  * Author: Adam Dunkels <adam@sics.se>
30  *
31  */
32 #ifndef LWIP_ARCH_PERF_H
33 #define LWIP_ARCH_PERF_H
34 
35 #include <sys/times.h>
36 
37 #ifdef PERF
38 #define PERF_START  { \
39                          unsigned long __c1l, __c1h, __c2l, __c2h; \
40                          __asm__(".byte 0x0f, 0x31" : "=a" (__c1l), "=d" (__c1h))
41 #define PERF_STOP(x)   __asm__(".byte 0x0f, 0x31" : "=a" (__c2l), "=d" (__c2h)); \
42                        perf_print(__c1l, __c1h, __c2l, __c2h, x);}
43 
44 /*#define PERF_START do { \
45                      struct tms __perf_start, __perf_end; \
46                      times(&__perf_start)
47 #define PERF_STOP(x) times(&__perf_end); \
48                      perf_print_times(&__perf_start, &__perf_end, x);\
49                      } while(0)*/
50 #else /* PERF */
51 #define PERF_START    /* null definition */
52 #define PERF_STOP(x)  /* null definition */
53 #endif /* PERF */
54 
55 void perf_print(unsigned long c1l, unsigned long c1h,
56 		unsigned long c2l, unsigned long c2h,
57 		char *key);
58 
59 void perf_print_times(struct tms *start, struct tms *end, char *key);
60 
61 void perf_init(char *fname);
62 
63 #endif /* LWIP_ARCH_PERF_H */
64