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gmon.c
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/*
* Copyright (c) 1999, 2003, 2004, 2007, 2008 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#if defined(PROFILE)
#error This module cannot be compiled with profiling
#endif
/*-
* Copyright (c) 1983, 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* History
* 2-Mar-90 Gregg Kellogg (gk) at NeXT
* Changed include of kern/mach.h to kern/mach_interface.h
*
* 1-May-90 Matthew Self (mself) at NeXT
* Added prototypes, and added casts to remove all warnings.
* Made all private data static.
* vm_deallocate old data defore vm_allocate'ing new data.
* Added new functions monoutput and monreset.
*
* 18-Dec-92 Development Environment Group at NeXT
* Added multiple profile areas, the ability to profile shlibs and the
* ability to profile rld loaded code. Moved the machine dependent mcount
* routine out of this source file.
*
* 13-Dec-92 Development Environment Group at NeXT
* Added support for dynamic shared libraries. Also removed the code that
* had been ifdef'ed out for profiling fixed shared libraries and
* objective-C.
*
* 29-Aug-11 Vishal Patel (vishal_patel) at Apple
* Removed code that made calls to deprecated syscalls profil() and
* add_profil(). The syscalls are not supported since 2008 and planned
* to be completely removed soon. Similarly the monitor apis are also
* deprecated.
*
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)gmon.c 5.2 (Berkeley) 6/21/85";
#endif
/*
* see profil(2) where this (SCALE_1_TO_1) is describe (incorrectly).
*
* The correct description: scale is a fixed point value with
* the binary point in the middle of the 32 bit value. (Bit 16 is
* 1, bit 15 is .5, etc.)
*
* Setting the scale to "1" (i.e. 0x10000), results in the kernel
* choosing the profile bucket address 1 to 1 with the pc sampled.
* Since buckets are shorts, if the profiling base were 0, then a pc
* of 0 increments bucket 0, a pc of 2 increments bucket 1, and a pc
* of 4 increments bucket 2.) (Actually, this seems a little bogus,
* 1 to 1 should map pc's to buckets -- that's probably what was
* intended from the man page, but historically....
*/
#define SCALE_1_TO_1 0x10000L
#define MSG "No space for monitor buffer(s)\n"
#include <stdio.h>
#include <libc.h>
#include <monitor.h>
#include <sys/types.h>
#include <sys/gmon.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <mach/mach.h>
#include <mach-o/loader.h>
#include <mach-o/dyld.h>
#include <mach-o/getsect.h>
/*
* These are defined in here and these declarations need to be moved to libc.h
* where the other declarations for the monitor(3) routines are declared.
*/
extern void moninit(
void);
extern void monaddition(
char *lowpc,
char *highpc);
extern void moncount(
char *frompc,
char *selfpc);
extern void monreset(
void);
extern void monoutput(
const char *filename);
void
moninit(
void)
{
return; // Deprecated api. do nothing
}
void
monstartup(
char *lowpc,
char *highpc)
{
return; // Deprecated api. do nothing
}
/*
* monaddtion() is used for adding additional pc ranges to profile. This is
* used for profiling dyld loaded code.
*/
void
monaddition(
char *lowpc,
char *highpc)
{
return; // Deprecated api. do nothing
}
void
monreset(
void)
{
return; // Deprecated api. do nothing
}
void
monoutput(
const char *filename)
{
return; // Deprecated api. do nothing
}
void
monitor(
char *lowpc,
char *highpc,
char *buf,
int bufsiz,
int nfunc) /* nfunc is not used; available for compatability only. */
{
return; // Deprecated api. do nothing
}
/*
* Control profiling
* profiling is what mcount checks to see if
* all the data structures are ready.
*/
void
moncontrol(
int mode)
{
return; // Deprecated api. do nothing
}
void
moncount(
char *frompc,
char *selfpc)
{
return; //Deprecated api. do nothing
}