/*-
|
/*-
|
* Copyright (c) 1983, 1992, 1993
|
* Copyright (c) 1983, 1992, 1993
|
* The Regents of the University of California. All rights reserved.
|
* The Regents of the University of California. All rights reserved.
|
*
|
*
|
* Redistribution and use in source and binary forms, with or without
|
* Redistribution and use in source and binary forms, with or without
|
* modification, are permitted provided that the following conditions
|
* modification, are permitted provided that the following conditions
|
* are met:
|
* are met:
|
* 1. Redistributions of source code must retain the above copyright
|
* 1. Redistributions of source code must retain the above copyright
|
* notice, this list of conditions and the following disclaimer.
|
* notice, this list of conditions and the following disclaimer.
|
* 2. Redistributions in binary form must reproduce the above copyright
|
* 2. Redistributions in binary form must reproduce the above copyright
|
* notice, this list of conditions and the following disclaimer in the
|
* notice, this list of conditions and the following disclaimer in the
|
* documentation and/or other materials provided with the distribution.
|
* documentation and/or other materials provided with the distribution.
|
* 4. Neither the name of the University nor the names of 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
|
* may be used to endorse or promote products derived from this software
|
* without specific prior written permission.
|
* without specific prior written permission.
|
*
|
*
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
* 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
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
* SUCH DAMAGE.
|
* SUCH DAMAGE.
|
*/
|
*/
|
|
|
/* This file implements a subset of the profiling support functions.
|
/* This file implements a subset of the profiling support functions.
|
It has been copied and adapted from mcount.c, gmon.c and gmon.h in
|
It has been copied and adapted from mcount.c, gmon.c and gmon.h in
|
the glibc sources.
|
the glibc sources.
|
Since we do not have access to a timer interrupt in the simulator
|
Since we do not have access to a timer interrupt in the simulator
|
the histogram and basic block information is not generated. */
|
the histogram and basic block information is not generated. */
|
|
|
#include <stdio.h>
|
#include <stdio.h>
|
#include <stdlib.h>
|
#include <stdlib.h>
|
#include <string.h>
|
#include <string.h>
|
#include <unistd.h>
|
#include <unistd.h>
|
#include <fcntl.h>
|
#include <fcntl.h>
|
|
|
/* Fraction of text space to allocate for histogram counters here, 1/2. */
|
/* Fraction of text space to allocate for histogram counters here, 1/2. */
|
#define HISTFRACTION 2
|
#define HISTFRACTION 2
|
|
|
/* Fraction of text space to allocate for from hash buckets.
|
/* Fraction of text space to allocate for from hash buckets.
|
The value of HASHFRACTION is based on the minimum number of bytes
|
The value of HASHFRACTION is based on the minimum number of bytes
|
of separation between two subroutine call points in the object code.
|
of separation between two subroutine call points in the object code.
|
Given MIN_SUBR_SEPARATION bytes of separation the value of
|
Given MIN_SUBR_SEPARATION bytes of separation the value of
|
HASHFRACTION is calculated as:
|
HASHFRACTION is calculated as:
|
|
|
HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof (short) - 1);
|
HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof (short) - 1);
|
|
|
For example, on the VAX, the shortest two call sequence is:
|
For example, on the VAX, the shortest two call sequence is:
|
|
|
calls $0,(r0)
|
calls $0,(r0)
|
calls $0,(r0)
|
calls $0,(r0)
|
|
|
which is separated by only three bytes, thus HASHFRACTION is
|
which is separated by only three bytes, thus HASHFRACTION is
|
calculated as:
|
calculated as:
|
|
|
HASHFRACTION = 3 / (2 * 2 - 1) = 1
|
HASHFRACTION = 3 / (2 * 2 - 1) = 1
|
|
|
Note that the division above rounds down, thus if MIN_SUBR_FRACTION
|
Note that the division above rounds down, thus if MIN_SUBR_FRACTION
|
is less than three, this algorithm will not work!
|
is less than three, this algorithm will not work!
|
|
|
In practice, however, call instructions are rarely at a minimal
|
In practice, however, call instructions are rarely at a minimal
|
distance. Hence, we will define HASHFRACTION to be 2 across all
|
distance. Hence, we will define HASHFRACTION to be 2 across all
|
architectures. This saves a reasonable amount of space for
|
architectures. This saves a reasonable amount of space for
|
profiling data structures without (in practice) sacrificing
|
profiling data structures without (in practice) sacrificing
|
any granularity. */
|
any granularity. */
|
#define HASHFRACTION 2
|
#define HASHFRACTION 2
|
|
|
/* Percent of text space to allocate for tostructs.
|
/* Percent of text space to allocate for tostructs.
|
This is a heuristic; we will fail with a warning when profiling
|
This is a heuristic; we will fail with a warning when profiling
|
programs with a very large number of very small functions, but
|
programs with a very large number of very small functions, but
|
that's normally OK.
|
that's normally OK.
|
2 is probably still a good value for normal programs.
|
2 is probably still a good value for normal programs.
|
Profiling a test case with 64000 small functions will work if
|
Profiling a test case with 64000 small functions will work if
|
you raise this value to 3 and link statically (which bloats the
|
you raise this value to 3 and link statically (which bloats the
|
text size, thus raising the number of arcs expected by the heuristic). */
|
text size, thus raising the number of arcs expected by the heuristic). */
|
#define ARCDENSITY 3
|
#define ARCDENSITY 3
|
|
|
/* Always allocate at least this many tostructs. This hides the
|
/* Always allocate at least this many tostructs. This hides the
|
inadequacy of the ARCDENSITY heuristic, at least for small programs. */
|
inadequacy of the ARCDENSITY heuristic, at least for small programs. */
|
#define MINARCS 50
|
#define MINARCS 50
|
|
|
/* Maximum number of arcs we want to allow.
|
/* Maximum number of arcs we want to allow.
|
Used to be max representable value of ARCINDEX minus 2, but now
|
Used to be max representable value of ARCINDEX minus 2, but now
|
that ARCINDEX is a long, that's too large; we don't really want
|
that ARCINDEX is a long, that's too large; we don't really want
|
to allow a 48 gigabyte table.
|
to allow a 48 gigabyte table.
|
The old value of 1<<16 wasn't high enough in practice for large C++
|
The old value of 1<<16 wasn't high enough in practice for large C++
|
programs; will 1<<20 be adequate for long? FIXME */
|
programs; will 1<<20 be adequate for long? FIXME */
|
#define MAXARCS (1 << 20)
|
#define MAXARCS (1 << 20)
|
|
|
#define SCALE_1_TO_1 0x10000L
|
#define SCALE_1_TO_1 0x10000L
|
|
|
#define GMON_MAGIC "gmon" /* Magic cookie. */
|
#define GMON_MAGIC "gmon" /* Magic cookie. */
|
#define GMON_VERSION 1 /* Version number. */
|
#define GMON_VERSION 1 /* Version number. */
|
|
|
|
|
/* General rounding functions. */
|
/* General rounding functions. */
|
#define ROUNDDOWN(x ,y) (((x) / (y)) * (y))
|
#define ROUNDDOWN(x ,y) (((x) / (y)) * (y))
|
#define ROUNDUP(x, y) ((((x) + (y) - 1) / (y)) * (y))
|
#define ROUNDUP(x, y) ((((x) + (y) - 1) / (y)) * (y))
|
|
|
struct tostruct
|
struct tostruct
|
{
|
{
|
unsigned long selfpc;
|
unsigned long selfpc;
|
unsigned long count;
|
unsigned long count;
|
unsigned long link;
|
unsigned long link;
|
};
|
};
|
|
|
/* Possible states of profiling. */
|
/* Possible states of profiling. */
|
enum profiling_state
|
enum profiling_state
|
{
|
{
|
GMON_PROF_OFF,
|
GMON_PROF_OFF,
|
GMON_PROF_ON,
|
GMON_PROF_ON,
|
GMON_PROF_BUSY,
|
GMON_PROF_BUSY,
|
GMON_PROF_ERROR
|
GMON_PROF_ERROR
|
};
|
};
|
|
|
/* The profiling data structures are housed in this structure. */
|
/* The profiling data structures are housed in this structure. */
|
struct gmonparam
|
struct gmonparam
|
{
|
{
|
enum profiling_state state;
|
enum profiling_state state;
|
unsigned short * kcount;
|
unsigned short * kcount;
|
unsigned long kcountsize;
|
unsigned long kcountsize;
|
unsigned long * froms;
|
unsigned long * froms;
|
unsigned long fromssize;
|
unsigned long fromssize;
|
struct tostruct * tos;
|
struct tostruct * tos;
|
unsigned long tossize;
|
unsigned long tossize;
|
long tolimit;
|
long tolimit;
|
unsigned long lowpc;
|
unsigned long lowpc;
|
unsigned long highpc;
|
unsigned long highpc;
|
unsigned long textsize;
|
unsigned long textsize;
|
unsigned long hashfraction;
|
unsigned long hashfraction;
|
long log_hashfraction;
|
long log_hashfraction;
|
};
|
};
|
|
|
/* Raw header as it appears in the gmon.out file (without padding).
|
/* Raw header as it appears in the gmon.out file (without padding).
|
This header always comes first and is then followed by a series
|
This header always comes first and is then followed by a series
|
records defined below. */
|
records defined below. */
|
struct gmon_hdr
|
struct gmon_hdr
|
{
|
{
|
char cookie[4];
|
char cookie[4];
|
char version[4];
|
char version[4];
|
char spare[3 * 4];
|
char spare[3 * 4];
|
};
|
};
|
|
|
/* Types of records in this file. */
|
/* Types of records in this file. */
|
typedef enum
|
typedef enum
|
{
|
{
|
GMON_TAG_TIME_HIST = 0,
|
GMON_TAG_TIME_HIST = 0,
|
GMON_TAG_CG_ARC = 1,
|
GMON_TAG_CG_ARC = 1,
|
} GMON_Record_Tag;
|
} GMON_Record_Tag;
|
|
|
struct gmon_cg_arc_record
|
struct gmon_cg_arc_record
|
{
|
{
|
char tag; /* Set to GMON_TAG_CG_ARC. */
|
char tag; /* Set to GMON_TAG_CG_ARC. */
|
char from_pc[sizeof (char *)]; /* Address within caller's body. */
|
char from_pc[sizeof (char *)]; /* Address within caller's body. */
|
char self_pc[sizeof (char *)]; /* Address within callee's body. */
|
char self_pc[sizeof (char *)]; /* Address within callee's body. */
|
char count[4]; /* Number of arc traversals. */
|
char count[4]; /* Number of arc traversals. */
|
};
|
};
|
|
|
|
|
/* Forward declarations. */
|
/* Forward declarations. */
|
void _mcount_internal (unsigned long);
|
void _mcount_internal (unsigned long);
|
void _monstartup (unsigned long, unsigned long);
|
void _monstartup (unsigned long, unsigned long);
|
void _mcleanup (void);
|
void _mcleanup (void);
|
|
|
static struct gmonparam _gmonparam;
|
static struct gmonparam _gmonparam;
|
|
|
void
|
void
|
_mcount_internal (unsigned long frompc)
|
_mcount_internal (unsigned long frompc)
|
{
|
{
|
unsigned long selfpc = frompc;
|
unsigned long selfpc = frompc;
|
unsigned long * frompcindex;
|
unsigned long * frompcindex;
|
struct tostruct * top;
|
struct tostruct * top;
|
struct tostruct * prevtop;
|
struct tostruct * prevtop;
|
struct gmonparam * p;
|
struct gmonparam * p;
|
unsigned long toindex;
|
unsigned long toindex;
|
int i;
|
int i;
|
|
|
p = & _gmonparam;
|
p = & _gmonparam;
|
|
|
/* Check that we are profiling and that we aren't recursively invoked.
|
/* Check that we are profiling and that we aren't recursively invoked.
|
NB/ This version is not thread-safe. */
|
NB/ This version is not thread-safe. */
|
if (p->state != GMON_PROF_ON)
|
if (p->state != GMON_PROF_ON)
|
return;
|
return;
|
p->state = GMON_PROF_BUSY;
|
p->state = GMON_PROF_BUSY;
|
|
|
/* Check that frompcindex is a reasonable pc value.
|
/* Check that frompcindex is a reasonable pc value.
|
For example: signal catchers get called from the stack,
|
For example: signal catchers get called from the stack,
|
not from text space. Too bad. */
|
not from text space. Too bad. */
|
frompc -= p->lowpc;
|
frompc -= p->lowpc;
|
if (frompc > p->textsize)
|
if (frompc > p->textsize)
|
goto done;
|
goto done;
|
|
|
i = frompc >> p->log_hashfraction;
|
i = frompc >> p->log_hashfraction;
|
|
|
frompcindex = p->froms + i;
|
frompcindex = p->froms + i;
|
toindex = * frompcindex;
|
toindex = * frompcindex;
|
|
|
if (toindex == 0)
|
if (toindex == 0)
|
{
|
{
|
/* First time traversing this arc. */
|
/* First time traversing this arc. */
|
toindex = ++ p->tos[0].link;
|
toindex = ++ p->tos[0].link;
|
if (toindex >= p->tolimit)
|
if (toindex >= p->tolimit)
|
/* Halt further profiling. */
|
/* Halt further profiling. */
|
goto overflow;
|
goto overflow;
|
|
|
* frompcindex = toindex;
|
* frompcindex = toindex;
|
top = p->tos + toindex;
|
top = p->tos + toindex;
|
top->selfpc = selfpc;
|
top->selfpc = selfpc;
|
top->count = 1;
|
top->count = 1;
|
top->link = 0;
|
top->link = 0;
|
goto done;
|
goto done;
|
}
|
}
|
|
|
top = p->tos + toindex;
|
top = p->tos + toindex;
|
|
|
if (top->selfpc == selfpc)
|
if (top->selfpc == selfpc)
|
{
|
{
|
/* Arc at front of chain: usual case. */
|
/* Arc at front of chain: usual case. */
|
top->count ++;
|
top->count ++;
|
goto done;
|
goto done;
|
}
|
}
|
|
|
/* Have to go looking down chain for it.
|
/* Have to go looking down chain for it.
|
Top points to what we are looking at,
|
Top points to what we are looking at,
|
prevtop points to previous top.
|
prevtop points to previous top.
|
We know it is not at the head of the chain. */
|
We know it is not at the head of the chain. */
|
for (;;)
|
for (;;)
|
{
|
{
|
if (top->link == 0)
|
if (top->link == 0)
|
{
|
{
|
/* Top is end of the chain and none of the chain
|
/* Top is end of the chain and none of the chain
|
had top->selfpc == selfpc. So we allocate a
|
had top->selfpc == selfpc. So we allocate a
|
new tostruct and link it to the head of the
|
new tostruct and link it to the head of the
|
chain. */
|
chain. */
|
toindex = ++ p->tos[0].link;
|
toindex = ++ p->tos[0].link;
|
if (toindex >= p->tolimit)
|
if (toindex >= p->tolimit)
|
goto overflow;
|
goto overflow;
|
|
|
top = p->tos + toindex;
|
top = p->tos + toindex;
|
top->selfpc = selfpc;
|
top->selfpc = selfpc;
|
top->count = 1;
|
top->count = 1;
|
top->link = * frompcindex;
|
top->link = * frompcindex;
|
* frompcindex = toindex;
|
* frompcindex = toindex;
|
goto done;
|
goto done;
|
}
|
}
|
|
|
/* Otherwise, check the next arc on the chain. */
|
/* Otherwise, check the next arc on the chain. */
|
prevtop = top;
|
prevtop = top;
|
top = p->tos + top->link;
|
top = p->tos + top->link;
|
|
|
if (top->selfpc == selfpc)
|
if (top->selfpc == selfpc)
|
{
|
{
|
/* There it is. Increment its count
|
/* There it is. Increment its count
|
move it to the head of the chain. */
|
move it to the head of the chain. */
|
top->count ++;
|
top->count ++;
|
toindex = prevtop->link;
|
toindex = prevtop->link;
|
prevtop->link = top->link;
|
prevtop->link = top->link;
|
top->link = * frompcindex;
|
top->link = * frompcindex;
|
* frompcindex = toindex;
|
* frompcindex = toindex;
|
goto done;
|
goto done;
|
}
|
}
|
}
|
}
|
|
|
done:
|
done:
|
p->state = GMON_PROF_ON;
|
p->state = GMON_PROF_ON;
|
return;
|
return;
|
|
|
overflow:
|
overflow:
|
p->state = GMON_PROF_ERROR;
|
p->state = GMON_PROF_ERROR;
|
return;
|
return;
|
}
|
}
|
|
|
void
|
void
|
_monstartup (unsigned long lowpc, unsigned long highpc)
|
_monstartup (unsigned long lowpc, unsigned long highpc)
|
{
|
{
|
char * cp;
|
char * cp;
|
struct gmonparam * p = & _gmonparam;
|
struct gmonparam * p = & _gmonparam;
|
|
|
/* If the calloc() function has been instrumented we must make sure
|
/* If the calloc() function has been instrumented we must make sure
|
that it is not profiled until we are ready. */
|
that it is not profiled until we are ready. */
|
p->state = GMON_PROF_BUSY;
|
p->state = GMON_PROF_BUSY;
|
|
|
/* Round lowpc and highpc to multiples of the density we're using
|
/* Round lowpc and highpc to multiples of the density we're using
|
so the rest of the scaling (here and in gprof) stays in ints. */
|
so the rest of the scaling (here and in gprof) stays in ints. */
|
p->lowpc = ROUNDDOWN (lowpc, HISTFRACTION * sizeof (* p->kcount));
|
p->lowpc = ROUNDDOWN (lowpc, HISTFRACTION * sizeof (* p->kcount));
|
p->highpc = ROUNDUP (highpc, HISTFRACTION * sizeof (* p->kcount));
|
p->highpc = ROUNDUP (highpc, HISTFRACTION * sizeof (* p->kcount));
|
p->textsize = p->highpc - p->lowpc;
|
p->textsize = p->highpc - p->lowpc;
|
p->kcountsize = ROUNDUP (p->textsize / HISTFRACTION, sizeof (*p->froms));
|
p->kcountsize = ROUNDUP (p->textsize / HISTFRACTION, sizeof (*p->froms));
|
p->hashfraction = HASHFRACTION;
|
p->hashfraction = HASHFRACTION;
|
p->log_hashfraction = -1;
|
p->log_hashfraction = -1;
|
p->log_hashfraction = ffs (p->hashfraction * sizeof (*p->froms)) - 1;
|
p->log_hashfraction = ffs (p->hashfraction * sizeof (*p->froms)) - 1;
|
p->fromssize = p->textsize / HASHFRACTION;
|
p->fromssize = p->textsize / HASHFRACTION;
|
p->tolimit = p->textsize * ARCDENSITY / 100;
|
p->tolimit = p->textsize * ARCDENSITY / 100;
|
|
|
if (p->tolimit < MINARCS)
|
if (p->tolimit < MINARCS)
|
p->tolimit = MINARCS;
|
p->tolimit = MINARCS;
|
else if (p->tolimit > MAXARCS)
|
else if (p->tolimit > MAXARCS)
|
p->tolimit = MAXARCS;
|
p->tolimit = MAXARCS;
|
|
|
p->tossize = p->tolimit * sizeof (struct tostruct);
|
p->tossize = p->tolimit * sizeof (struct tostruct);
|
|
|
cp = calloc (p->kcountsize + p->fromssize + p->tossize, 1);
|
cp = calloc (p->kcountsize + p->fromssize + p->tossize, 1);
|
if (cp == NULL)
|
if (cp == NULL)
|
{
|
{
|
write (2, "monstartup: out of memory\n", 26);
|
write (2, "monstartup: out of memory\n", 26);
|
p->tos = NULL;
|
p->tos = NULL;
|
p->state = GMON_PROF_ERROR;
|
p->state = GMON_PROF_ERROR;
|
return;
|
return;
|
}
|
}
|
|
|
p->tos = (struct tostruct *) cp;
|
p->tos = (struct tostruct *) cp;
|
cp += p->tossize;
|
cp += p->tossize;
|
p->kcount = (unsigned short *) cp;
|
p->kcount = (unsigned short *) cp;
|
cp += p->kcountsize;
|
cp += p->kcountsize;
|
p->froms = (unsigned long *) cp;
|
p->froms = (unsigned long *) cp;
|
|
|
p->tos[0].link = 0;
|
p->tos[0].link = 0;
|
p->state = GMON_PROF_ON;
|
p->state = GMON_PROF_ON;
|
}
|
}
|
|
|
|
|
static void
|
static void
|
write_call_graph (int fd)
|
write_call_graph (int fd)
|
{
|
{
|
#define NARCS_PER_WRITE 32
|
#define NARCS_PER_WRITE 32
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|
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struct gmon_cg_arc_record raw_arc[NARCS_PER_WRITE]
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struct gmon_cg_arc_record raw_arc[NARCS_PER_WRITE]
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__attribute__ ((aligned (__alignof__ (char *))));
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__attribute__ ((aligned (__alignof__ (char *))));
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unsigned long from_index;
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unsigned long from_index;
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unsigned long to_index;
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unsigned long to_index;
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unsigned long from_len;
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unsigned long from_len;
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unsigned long frompc;
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unsigned long frompc;
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int nfilled;
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int nfilled;
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|
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for (nfilled = 0; nfilled < NARCS_PER_WRITE; ++ nfilled)
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for (nfilled = 0; nfilled < NARCS_PER_WRITE; ++ nfilled)
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raw_arc[nfilled].tag = GMON_TAG_CG_ARC;
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raw_arc[nfilled].tag = GMON_TAG_CG_ARC;
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nfilled = 0;
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nfilled = 0;
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from_len = _gmonparam.fromssize / sizeof (*_gmonparam.froms);
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from_len = _gmonparam.fromssize / sizeof (*_gmonparam.froms);
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|
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for (from_index = 0; from_index < from_len; ++from_index)
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for (from_index = 0; from_index < from_len; ++from_index)
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{
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{
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if (_gmonparam.froms[from_index] == 0)
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if (_gmonparam.froms[from_index] == 0)
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continue;
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continue;
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|
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frompc = _gmonparam.lowpc;
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frompc = _gmonparam.lowpc;
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frompc += (from_index * _gmonparam.hashfraction
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frompc += (from_index * _gmonparam.hashfraction
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* sizeof (*_gmonparam.froms));
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* sizeof (*_gmonparam.froms));
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|
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for (to_index = _gmonparam.froms[from_index];
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for (to_index = _gmonparam.froms[from_index];
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to_index != 0;
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to_index != 0;
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to_index = _gmonparam.tos[to_index].link)
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to_index = _gmonparam.tos[to_index].link)
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{
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{
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struct gmon_cg_arc_record * arc = raw_arc + nfilled;
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struct gmon_cg_arc_record * arc = raw_arc + nfilled;
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|
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memcpy (arc->from_pc, & frompc, sizeof (arc->from_pc));
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memcpy (arc->from_pc, & frompc, sizeof (arc->from_pc));
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memcpy (arc->self_pc, & _gmonparam.tos[to_index].selfpc, sizeof (arc->self_pc));
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memcpy (arc->self_pc, & _gmonparam.tos[to_index].selfpc, sizeof (arc->self_pc));
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memcpy (arc->count, & _gmonparam.tos[to_index].count, sizeof (arc->count));
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memcpy (arc->count, & _gmonparam.tos[to_index].count, sizeof (arc->count));
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|
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if (++ nfilled == NARCS_PER_WRITE)
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if (++ nfilled == NARCS_PER_WRITE)
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{
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{
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write (fd, raw_arc, sizeof raw_arc);
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write (fd, raw_arc, sizeof raw_arc);
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nfilled = 0;
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nfilled = 0;
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}
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}
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}
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}
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}
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}
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|
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if (nfilled > 0)
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if (nfilled > 0)
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write (fd, raw_arc, nfilled * sizeof (raw_arc[0]));
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write (fd, raw_arc, nfilled * sizeof (raw_arc[0]));
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}
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}
|
|
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#include <errno.h>
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#include <errno.h>
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|
|
static void
|
static void
|
write_gmon (void)
|
write_gmon (void)
|
{
|
{
|
struct gmon_hdr ghdr __attribute__ ((aligned (__alignof__ (int))));
|
struct gmon_hdr ghdr __attribute__ ((aligned (__alignof__ (int))));
|
int fd;
|
int fd;
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|
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fd = open ("gmon.out", O_CREAT|O_TRUNC|O_WRONLY, 0666);
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fd = open ("gmon.out", O_CREAT|O_TRUNC|O_WRONLY, 0666);
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if (fd < 0)
|
if (fd < 0)
|
{
|
{
|
write (2, "_mcleanup: could not create gmon.out\n", 37);
|
write (2, "_mcleanup: could not create gmon.out\n", 37);
|
return;
|
return;
|
}
|
}
|
|
|
/* Write gmon.out header: */
|
/* Write gmon.out header: */
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memset (& ghdr, '\0', sizeof (ghdr));
|
memset (& ghdr, '\0', sizeof (ghdr));
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memcpy (ghdr.cookie, GMON_MAGIC, sizeof (ghdr.cookie));
|
memcpy (ghdr.cookie, GMON_MAGIC, sizeof (ghdr.cookie));
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* (unsigned long *) ghdr.version = GMON_VERSION;
|
* (unsigned long *) ghdr.version = GMON_VERSION;
|
write (fd, & ghdr, sizeof (ghdr));
|
write (fd, & ghdr, sizeof (ghdr));
|
|
|
/* We do not have histogram or basic block information,
|
/* We do not have histogram or basic block information,
|
so we do not generate these parts of the gmon.out file. */
|
so we do not generate these parts of the gmon.out file. */
|
|
|
/* Write call-graph. */
|
/* Write call-graph. */
|
write_call_graph (fd);
|
write_call_graph (fd);
|
|
|
close (fd);
|
close (fd);
|
}
|
}
|
|
|
void
|
void
|
_mcleanup (void)
|
_mcleanup (void)
|
{
|
{
|
if (_gmonparam.state != GMON_PROF_ERROR)
|
if (_gmonparam.state != GMON_PROF_ERROR)
|
{
|
{
|
_gmonparam.state = GMON_PROF_OFF;
|
_gmonparam.state = GMON_PROF_OFF;
|
write_gmon ();
|
write_gmon ();
|
}
|
}
|
|
|
/* Free the memory. */
|
/* Free the memory. */
|
if (_gmonparam.tos != NULL)
|
if (_gmonparam.tos != NULL)
|
{
|
{
|
free (_gmonparam.tos);
|
free (_gmonparam.tos);
|
_gmonparam.tos = NULL;
|
_gmonparam.tos = NULL;
|
}
|
}
|
}
|
}
|
|
|
