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vlmcsd-svn1065-2016-10-12-Hotbird64
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599 changed files with 72866 additions and 1999 deletions
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/*-
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* Copyright (c) 1982, 1986, 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)gmon.h 8.2 (Berkeley) 1/4/94
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*/
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#ifndef _SYS_GMON_H
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#define _SYS_GMON_H 1
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#include <features.h>
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#include <sys/types.h>
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/*
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* See gmon_out.h for gmon.out format.
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*/
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/* structure emitted by "gcc -a". This must match struct bb in
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gcc/libgcc2.c. It is OK for gcc to declare a longer structure as
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long as the members below are present. */
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struct __bb
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{
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long zero_word;
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const char *filename;
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long *counts;
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long ncounts;
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struct __bb *next;
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const unsigned long *addresses;
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};
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extern struct __bb *__bb_head;
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/*
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* histogram counters are unsigned shorts (according to the kernel).
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*/
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#define HISTCOUNTER unsigned short
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/*
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* fraction of text space to allocate for histogram counters here, 1/2
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*/
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#define HISTFRACTION 2
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/*
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* Fraction of text space to allocate for from hash buckets.
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* The value of HASHFRACTION is based on the minimum number of bytes
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* of separation between two subroutine call points in the object code.
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* Given MIN_SUBR_SEPARATION bytes of separation the value of
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* HASHFRACTION is calculated as:
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*
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* HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof(short) - 1);
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*
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* For example, on the VAX, the shortest two call sequence is:
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*
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* calls $0,(r0)
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* calls $0,(r0)
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*
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* which is separated by only three bytes, thus HASHFRACTION is
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* calculated as:
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*
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* HASHFRACTION = 3 / (2 * 2 - 1) = 1
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*
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* Note that the division above rounds down, thus if MIN_SUBR_FRACTION
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* is less than three, this algorithm will not work!
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*
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* In practice, however, call instructions are rarely at a minimal
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* distance. Hence, we will define HASHFRACTION to be 2 across all
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* architectures. This saves a reasonable amount of space for
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* profiling data structures without (in practice) sacrificing
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* any granularity.
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*/
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#define HASHFRACTION 2
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/*
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* Percent of text space to allocate for tostructs.
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* This is a heuristic; we will fail with a warning when profiling programs
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* with a very large number of very small functions, but that's
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* normally OK.
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* 2 is probably still a good value for normal programs.
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* Profiling a test case with 64000 small functions will work if
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* you raise this value to 3 and link statically (which bloats the
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* text size, thus raising the number of arcs expected by the heuristic).
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*/
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#define ARCDENSITY 3
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/*
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* Always allocate at least this many tostructs. This
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* hides the inadequacy of the ARCDENSITY heuristic, at least
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* for small programs.
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*/
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#define MINARCS 50
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/*
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* The type used to represent indices into gmonparam.tos[].
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*/
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#define ARCINDEX u_long
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/*
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* Maximum number of arcs we want to allow.
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* Used to be max representable value of ARCINDEX minus 2, but now
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* that ARCINDEX is a long, that's too large; we don't really want
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* to allow a 48 gigabyte table.
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* The old value of 1<<16 wasn't high enough in practice for large C++
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* programs; will 1<<20 be adequate for long? FIXME
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*/
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#define MAXARCS (1 << 20)
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struct tostruct {
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u_long selfpc;
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long count;
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ARCINDEX link;
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};
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/*
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* a raw arc, with pointers to the calling site and
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* the called site and a count.
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*/
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struct rawarc {
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u_long raw_frompc;
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u_long raw_selfpc;
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long raw_count;
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};
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/*
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* general rounding functions.
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*/
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#define ROUNDDOWN(x,y) (((x)/(y))*(y))
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#define ROUNDUP(x,y) ((((x)+(y)-1)/(y))*(y))
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/*
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* The profiling data structures are housed in this structure.
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*/
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struct gmonparam {
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long int state;
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u_short *kcount;
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u_long kcountsize;
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ARCINDEX *froms;
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u_long fromssize;
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struct tostruct *tos;
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u_long tossize;
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long tolimit;
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u_long lowpc;
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u_long highpc;
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u_long textsize;
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u_long hashfraction;
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long log_hashfraction;
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};
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/*
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* Possible states of profiling.
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*/
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#define GMON_PROF_ON 0
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#define GMON_PROF_BUSY 1
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#define GMON_PROF_ERROR 2
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#define GMON_PROF_OFF 3
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/*
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* Sysctl definitions for extracting profiling information from the kernel.
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*/
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#define GPROF_STATE 0 /* int: profiling enabling variable */
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#define GPROF_COUNT 1 /* struct: profile tick count buffer */
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#define GPROF_FROMS 2 /* struct: from location hash bucket */
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#define GPROF_TOS 3 /* struct: destination/count structure */
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#define GPROF_GMONPARAM 4 /* struct: profiling parameters (see above) */
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__BEGIN_DECLS
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/* Set up data structures and start profiling. */
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extern void __monstartup (u_long __lowpc, u_long __highpc) __THROW;
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extern void monstartup (u_long __lowpc, u_long __highpc) __THROW;
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/* Clean up profiling and write out gmon.out. */
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extern void _mcleanup (void) __THROW;
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__END_DECLS
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#endif /* sys/gmon.h */
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