67ddef9aac
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10734 a1c6a512-1295-4272-9138-f99709370657
78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Profiling routines counts ticks and calls to each profiled function.
|
|
*
|
|
* Copyright (C) 2005 by Brandon Low
|
|
*
|
|
* All files in this archive are subject to the GNU General Public License.
|
|
* See the file COPYING in the source tree root for full license agreement.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
****************************************************************************/
|
|
|
|
#ifndef _SYS_PROFILE_H
|
|
#define _SYS_PROFILE_H 1
|
|
|
|
#include <sys/types.h>
|
|
|
|
/* PFD is Profiled Function Data */
|
|
|
|
/* Indices are shorts which means that we use 4k of RAM */
|
|
#define INDEX_BITS 11 /* What is a reasonable size for this? */
|
|
#define INDEX_SIZE 2048 /* 2 ^ INDEX_BITS */
|
|
#define INDEX_MASK 0x7FF /* lower INDEX_BITS 1 */
|
|
|
|
/*
|
|
* In the current setup (pfd has 4 longs and 2 shorts) this uses 20k of RAM
|
|
* for profiling, and allows for profiling sections of code with up-to
|
|
* 1024 function caller->callee pairs
|
|
*/
|
|
#define NUMPFDS 1024
|
|
|
|
struct pfd_struct {
|
|
void *self_pc;
|
|
unsigned long count;
|
|
unsigned long time;
|
|
unsigned short link;
|
|
struct pfd_struct *caller;
|
|
};
|
|
|
|
/* Possible states of profiling */
|
|
#define PROF_ON 0x00
|
|
#define PROF_BUSY 0x01
|
|
#define PROF_ERROR 0x02
|
|
#define PROF_OFF 0x03
|
|
/* Masks for thread switches */
|
|
#define PROF_OFF_THREAD 0x10
|
|
#define PROF_ON_THREAD 0x0F
|
|
|
|
/* Initialize and start profiling */
|
|
void profstart(int current_thread)
|
|
NO_PROF_ATTR;
|
|
|
|
/* Clean up and write profile data */
|
|
void profstop (void)
|
|
NO_PROF_ATTR;
|
|
|
|
/* Called every time a thread stops, we check if it's our thread and store
|
|
* temporary timing data if it is */
|
|
void profile_thread_stopped(int current_thread)
|
|
NO_PROF_ATTR;
|
|
/* Called when a thread starts, we check if it's our thread and resume timing */
|
|
void profile_thread_started(int current_thread)
|
|
NO_PROF_ATTR;
|
|
|
|
void profile_func_exit(void *this_fn, void *call_site)
|
|
NO_PROF_ATTR ICODE_ATTR;
|
|
void profile_func_enter(void *this_fn, void *call_site)
|
|
NO_PROF_ATTR ICODE_ATTR;
|
|
|
|
#endif /*_SYS_PROFILE_H*/
|