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1de7b4b805
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
1206 lines
27 KiB
C
1206 lines
27 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2012, Fabien Thomas
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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/*
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* Process hwpmc(4) samples as calltree.
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*
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* Output file format compatible with Kcachegrind (kdesdk).
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* Handle top mode with a sorted tree display.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/endian.h>
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#include <sys/queue.h>
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#include <assert.h>
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#include <curses.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <pmc.h>
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#include <pmclog.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sysexits.h>
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#include "pmcstat.h"
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#include "pmcstat_log.h"
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#include "pmcstat_top.h"
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#include "pmcpl_calltree.h"
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#define min(A,B) ((A) < (B) ? (A) : (B))
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#define max(A,B) ((A) > (B) ? (A) : (B))
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#define PMCPL_CT_GROWSIZE 4
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static int pmcstat_skiplink = 0;
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struct pmcpl_ct_node;
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/* Get the sample value for PMC a. */
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#define PMCPL_CT_SAMPLE(a, b) \
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((a) < (b)->npmcs ? (b)->sb[a] : 0)
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/* Get the sample value in percent related to rsamples. */
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#define PMCPL_CT_SAMPLEP(a, b) \
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(PMCPL_CT_SAMPLE(a, b) * 100.0 / rsamples->sb[a])
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struct pmcpl_ct_sample {
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int npmcs; /* Max pmc index available. */
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unsigned *sb; /* Sample buffer for 0..npmcs. */
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};
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struct pmcpl_ct_arc {
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struct pmcpl_ct_sample pcta_samples;
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struct pmcpl_ct_sample pcta_callid;
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unsigned pcta_call;
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struct pmcpl_ct_node *pcta_child;
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};
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struct pmcpl_ct_instr {
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uintfptr_t pctf_func;
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struct pmcpl_ct_sample pctf_samples;
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};
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/*
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* Each calltree node is tracked by a pmcpl_ct_node struct.
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*/
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struct pmcpl_ct_node {
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struct pmcstat_image *pct_image;
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uintfptr_t pct_func;
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struct pmcstat_symbol *pct_sym;
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pmcstat_interned_string pct_ifl;
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pmcstat_interned_string pct_ifn;
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struct pmcpl_ct_sample pct_samples;
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int pct_narc;
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int pct_arc_c;
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struct pmcpl_ct_arc *pct_arc;
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/* TODO: optimize for large number of items. */
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int pct_ninstr;
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int pct_instr_c;
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struct pmcpl_ct_instr *pct_instr;
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#define PMCPL_PCT_ADDR 0
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#define PMCPL_PCT_NAME 1
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char pct_type;
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#define PMCPL_PCT_WHITE 0
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#define PMCPL_PCT_GREY 1
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#define PMCPL_PCT_BLACK 2
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char pct_color;
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};
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struct pmcpl_ct_node_hash {
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struct pmcpl_ct_node *pch_ctnode;
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STAILQ_ENTRY(pmcpl_ct_node_hash) pch_next;
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};
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static struct pmcpl_ct_sample pmcpl_ct_callid;
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#define PMCPL_CT_MAXCOL PMC_CALLCHAIN_DEPTH_MAX
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#define PMCPL_CT_MAXLINE 1024 /* TODO: dynamic. */
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struct pmcpl_ct_line {
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unsigned ln_sum;
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unsigned ln_index;
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};
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static struct pmcpl_ct_line pmcpl_ct_topmax[PMCPL_CT_MAXLINE+1];
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static struct pmcpl_ct_node
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*pmcpl_ct_topscreen[PMCPL_CT_MAXCOL+1][PMCPL_CT_MAXLINE+1];
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/*
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* All nodes indexed by function/image name are placed in a hash table.
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*/
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static STAILQ_HEAD(,pmcpl_ct_node_hash) pmcpl_ct_node_hash[PMCSTAT_NHASH];
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/*
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* Root node for the graph.
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*/
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static struct pmcpl_ct_node *pmcpl_ct_root;
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/*
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* Prototypes
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*/
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/*
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* Initialize a samples.
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*/
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static void
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pmcpl_ct_samples_init(struct pmcpl_ct_sample *samples)
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{
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samples->npmcs = 0;
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samples->sb = NULL;
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}
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/*
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* Free a samples.
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*/
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static void
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pmcpl_ct_samples_free(struct pmcpl_ct_sample *samples)
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{
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samples->npmcs = 0;
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free(samples->sb);
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samples->sb = NULL;
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}
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/*
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* Grow a sample block to store pmcstat_npmcs PMCs.
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*/
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static void
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pmcpl_ct_samples_grow(struct pmcpl_ct_sample *samples)
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{
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unsigned int npmcs;
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/* Enough storage. */
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if (pmcstat_npmcs <= samples->npmcs)
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return;
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npmcs = samples->npmcs +
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max(pmcstat_npmcs - samples->npmcs, PMCPL_CT_GROWSIZE);
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samples->sb = reallocarray(samples->sb, npmcs, sizeof(unsigned));
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if (samples->sb == NULL)
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errx(EX_SOFTWARE, "ERROR: out of memory");
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bzero((char *)samples->sb + samples->npmcs * sizeof(unsigned),
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(npmcs - samples->npmcs) * sizeof(unsigned));
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samples->npmcs = npmcs;
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}
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/*
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* Compute the sum of all root arcs.
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*/
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static void
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pmcpl_ct_samples_root(struct pmcpl_ct_sample *samples)
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{
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int i, pmcin;
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pmcpl_ct_samples_init(samples);
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pmcpl_ct_samples_grow(samples);
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for (i = 0; i < pmcpl_ct_root->pct_narc; i++)
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for (pmcin = 0; pmcin < pmcstat_npmcs; pmcin++)
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samples->sb[pmcin] += PMCPL_CT_SAMPLE(pmcin,
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&pmcpl_ct_root->pct_arc[i].pcta_samples);
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}
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/*
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* Grow the arc table.
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*/
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static void
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pmcpl_ct_arc_grow(int cursize, int *maxsize, struct pmcpl_ct_arc **items)
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{
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unsigned int nmaxsize;
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if (cursize < *maxsize)
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return;
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nmaxsize = *maxsize + max(cursize + 1 - *maxsize, PMCPL_CT_GROWSIZE);
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*items = reallocarray(*items, nmaxsize, sizeof(struct pmcpl_ct_arc));
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if (*items == NULL)
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errx(EX_SOFTWARE, "ERROR: out of memory");
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bzero((char *)*items + *maxsize * sizeof(struct pmcpl_ct_arc),
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(nmaxsize - *maxsize) * sizeof(struct pmcpl_ct_arc));
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*maxsize = nmaxsize;
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}
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/*
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* Grow the instr table.
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*/
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static void
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pmcpl_ct_instr_grow(int cursize, int *maxsize, struct pmcpl_ct_instr **items)
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{
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unsigned int nmaxsize;
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if (cursize < *maxsize)
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return;
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nmaxsize = *maxsize + max(cursize + 1 - *maxsize, PMCPL_CT_GROWSIZE);
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*items = reallocarray(*items, nmaxsize, sizeof(struct pmcpl_ct_instr));
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if (*items == NULL)
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errx(EX_SOFTWARE, "ERROR: out of memory");
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bzero((char *)*items + *maxsize * sizeof(struct pmcpl_ct_instr),
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(nmaxsize - *maxsize) * sizeof(struct pmcpl_ct_instr));
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*maxsize = nmaxsize;
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}
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/*
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* Add a new instruction sample to given node.
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*/
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static void
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pmcpl_ct_instr_add(struct pmcpl_ct_node *ct, int pmcin,
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uintfptr_t pc, unsigned v)
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{
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int i;
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struct pmcpl_ct_instr *in;
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for (i = 0; i<ct->pct_ninstr; i++) {
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if (ct->pct_instr[i].pctf_func == pc) {
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in = &ct->pct_instr[i];
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pmcpl_ct_samples_grow(&in->pctf_samples);
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in->pctf_samples.sb[pmcin] += v;
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return;
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}
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}
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pmcpl_ct_instr_grow(ct->pct_ninstr, &ct->pct_instr_c, &ct->pct_instr);
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in = &ct->pct_instr[ct->pct_ninstr];
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in->pctf_func = pc;
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pmcpl_ct_samples_init(&in->pctf_samples);
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pmcpl_ct_samples_grow(&in->pctf_samples);
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in->pctf_samples.sb[pmcin] = v;
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ct->pct_ninstr++;
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}
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/*
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* Allocate a new node.
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*/
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static struct pmcpl_ct_node *
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pmcpl_ct_node_allocate(void)
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{
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struct pmcpl_ct_node *ct;
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if ((ct = malloc(sizeof(*ct))) == NULL)
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err(EX_OSERR, "ERROR: Cannot allocate callgraph node");
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pmcpl_ct_samples_init(&ct->pct_samples);
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ct->pct_sym = NULL;
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ct->pct_image = NULL;
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ct->pct_func = 0;
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ct->pct_narc = 0;
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ct->pct_arc_c = 0;
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ct->pct_arc = NULL;
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ct->pct_ninstr = 0;
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ct->pct_instr_c = 0;
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ct->pct_instr = NULL;
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ct->pct_color = PMCPL_PCT_WHITE;
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return (ct);
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}
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/*
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* Free a node.
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*/
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static void
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pmcpl_ct_node_free(struct pmcpl_ct_node *ct)
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{
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int i;
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for (i = 0; i < ct->pct_narc; i++) {
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pmcpl_ct_samples_free(&ct->pct_arc[i].pcta_samples);
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pmcpl_ct_samples_free(&ct->pct_arc[i].pcta_callid);
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}
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pmcpl_ct_samples_free(&ct->pct_samples);
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free(ct->pct_arc);
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free(ct->pct_instr);
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free(ct);
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}
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/*
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* Clear the graph tag on each node.
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*/
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static void
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pmcpl_ct_node_cleartag(void)
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{
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int i;
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struct pmcpl_ct_node_hash *pch;
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for (i = 0; i < PMCSTAT_NHASH; i++)
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STAILQ_FOREACH(pch, &pmcpl_ct_node_hash[i], pch_next)
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pch->pch_ctnode->pct_color = PMCPL_PCT_WHITE;
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pmcpl_ct_root->pct_color = PMCPL_PCT_WHITE;
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}
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/*
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* Print the callchain line by line with maximum cost at top.
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*/
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static int
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pmcpl_ct_node_dumptop(int pmcin, struct pmcpl_ct_node *ct,
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struct pmcpl_ct_sample *rsamples, int x, int *y)
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{
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int i, terminal;
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struct pmcpl_ct_arc *arc;
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if (ct->pct_color == PMCPL_PCT_GREY)
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return 0;
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if (x >= PMCPL_CT_MAXCOL) {
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pmcpl_ct_topscreen[x][*y] = NULL;
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return 1;
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}
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pmcpl_ct_topscreen[x][*y] = ct;
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/*
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* Check if this is a terminal node.
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* We need to check that some samples exist
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* for at least one arc for that PMC.
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*/
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terminal = 1;
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for (i = 0; i < ct->pct_narc; i++) {
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arc = &ct->pct_arc[i];
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if (arc->pcta_child->pct_color != PMCPL_PCT_GREY &&
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PMCPL_CT_SAMPLE(pmcin,
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&arc->pcta_samples) != 0 &&
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PMCPL_CT_SAMPLEP(pmcin,
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&arc->pcta_samples) > pmcstat_threshold) {
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terminal = 0;
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break;
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}
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}
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if (ct->pct_narc == 0 || terminal) {
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pmcpl_ct_topscreen[x+1][*y] = NULL;
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if (*y >= PMCPL_CT_MAXLINE)
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return 1;
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*y = *y + 1;
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for (i=0; i < x; i++)
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pmcpl_ct_topscreen[i][*y] =
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pmcpl_ct_topscreen[i][*y - 1];
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return 0;
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}
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ct->pct_color = PMCPL_PCT_GREY;
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for (i = 0; i < ct->pct_narc; i++) {
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if (PMCPL_CT_SAMPLE(pmcin,
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&ct->pct_arc[i].pcta_samples) == 0)
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continue;
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if (PMCPL_CT_SAMPLEP(pmcin,
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&ct->pct_arc[i].pcta_samples) > pmcstat_threshold) {
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if (pmcpl_ct_node_dumptop(pmcin,
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ct->pct_arc[i].pcta_child,
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rsamples, x+1, y)) {
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ct->pct_color = PMCPL_PCT_BLACK;
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return 1;
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}
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}
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}
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ct->pct_color = PMCPL_PCT_BLACK;
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return 0;
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}
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/*
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* Compare two top line by sum.
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*/
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static int
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pmcpl_ct_line_compare(const void *a, const void *b)
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{
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const struct pmcpl_ct_line *ct1, *ct2;
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ct1 = (const struct pmcpl_ct_line *) a;
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ct2 = (const struct pmcpl_ct_line *) b;
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/* Sort in reverse order */
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if (ct1->ln_sum < ct2->ln_sum)
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return (1);
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if (ct1->ln_sum > ct2->ln_sum)
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return (-1);
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return (0);
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}
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/*
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* Format and display given PMC index.
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*/
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static void
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pmcpl_ct_node_printtop(struct pmcpl_ct_sample *rsamples, int pmcin, int maxy)
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{
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#undef TS
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#undef TSI
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#define TS(x, y) (pmcpl_ct_topscreen[x][y])
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#define TSI(x, y) (pmcpl_ct_topscreen[x][pmcpl_ct_topmax[y].ln_index])
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int v_attrs, ns_len, vs_len, is_len, width, indentwidth, x, y;
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float v;
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char ns[30], vs[10], is[20];
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struct pmcpl_ct_node *ct;
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const char *space = " ";
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/*
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* Sort by line cost.
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*/
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for (y = 0; ; y++) {
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ct = TS(1, y);
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if (ct == NULL)
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break;
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pmcpl_ct_topmax[y].ln_sum = 0;
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pmcpl_ct_topmax[y].ln_index = y;
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for (x = 1; TS(x, y) != NULL; x++) {
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pmcpl_ct_topmax[y].ln_sum +=
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PMCPL_CT_SAMPLE(pmcin, &TS(x, y)->pct_samples);
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}
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}
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qsort(pmcpl_ct_topmax, y, sizeof(pmcpl_ct_topmax[0]),
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pmcpl_ct_line_compare);
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pmcpl_ct_topmax[y].ln_index = y;
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for (y = 0; y < maxy; y++) {
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ct = TSI(1, y);
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if (ct == NULL)
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break;
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if (y > 0)
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PMCSTAT_PRINTW("\n");
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/* Output sum. */
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v = pmcpl_ct_topmax[y].ln_sum * 100.0 /
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rsamples->sb[pmcin];
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snprintf(vs, sizeof(vs), "%.1f", v);
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v_attrs = PMCSTAT_ATTRPERCENT(v);
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PMCSTAT_ATTRON(v_attrs);
|
|
PMCSTAT_PRINTW("%5.5s ", vs);
|
|
PMCSTAT_ATTROFF(v_attrs);
|
|
|
|
width = indentwidth = 5 + 1;
|
|
|
|
for (x = 1; (ct = TSI(x, y)) != NULL; x++) {
|
|
|
|
vs[0] = '\0'; vs_len = 0;
|
|
is[0] = '\0'; is_len = 0;
|
|
|
|
/* Format value. */
|
|
v = PMCPL_CT_SAMPLEP(pmcin, &ct->pct_samples);
|
|
if (v > pmcstat_threshold)
|
|
vs_len = snprintf(vs, sizeof(vs),
|
|
"(%.1f%%)", v);
|
|
v_attrs = PMCSTAT_ATTRPERCENT(v);
|
|
|
|
if (pmcstat_skiplink && v <= pmcstat_threshold) {
|
|
strlcpy(ns, ".", sizeof(ns));
|
|
ns_len = 1;
|
|
} else {
|
|
if (ct->pct_sym != NULL) {
|
|
ns_len = snprintf(ns, sizeof(ns), "%s",
|
|
pmcstat_string_unintern(ct->pct_sym->ps_name));
|
|
} else
|
|
ns_len = snprintf(ns, sizeof(ns), "%p",
|
|
(void *)ct->pct_func);
|
|
|
|
/* Format image. */
|
|
if (x == 1 ||
|
|
TSI(x-1, y)->pct_image != ct->pct_image)
|
|
is_len = snprintf(is, sizeof(is), "@%s",
|
|
pmcstat_string_unintern(ct->pct_image->pi_name));
|
|
|
|
/* Check for line wrap. */
|
|
width += ns_len + is_len + vs_len + 1;
|
|
}
|
|
if (width >= pmcstat_displaywidth) {
|
|
maxy--;
|
|
if (y >= maxy)
|
|
break;
|
|
PMCSTAT_PRINTW("\n%*s", indentwidth, space);
|
|
width = indentwidth + ns_len + is_len + vs_len;
|
|
}
|
|
|
|
PMCSTAT_ATTRON(v_attrs);
|
|
PMCSTAT_PRINTW("%s%s%s ", ns, is, vs);
|
|
PMCSTAT_ATTROFF(v_attrs);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Output top mode snapshot.
|
|
*/
|
|
|
|
void
|
|
pmcpl_ct_topdisplay(void)
|
|
{
|
|
int y;
|
|
struct pmcpl_ct_sample r, *rsamples;
|
|
|
|
rsamples = &r;
|
|
pmcpl_ct_samples_root(rsamples);
|
|
pmcpl_ct_node_cleartag();
|
|
|
|
PMCSTAT_PRINTW("%5.5s %s\n", "%SAMP", "CALLTREE");
|
|
|
|
y = 0;
|
|
if (pmcpl_ct_node_dumptop(pmcstat_pmcinfilter,
|
|
pmcpl_ct_root, rsamples, 0, &y))
|
|
PMCSTAT_PRINTW("...\n");
|
|
pmcpl_ct_topscreen[1][y] = NULL;
|
|
|
|
pmcpl_ct_node_printtop(rsamples,
|
|
pmcstat_pmcinfilter, pmcstat_displayheight - 2);
|
|
|
|
pmcpl_ct_samples_free(rsamples);
|
|
}
|
|
|
|
/*
|
|
* Handle top mode keypress.
|
|
*/
|
|
|
|
int
|
|
pmcpl_ct_topkeypress(int c, void *arg)
|
|
{
|
|
WINDOW *w;
|
|
|
|
w = (WINDOW *)arg;
|
|
|
|
switch (c) {
|
|
case 'f':
|
|
pmcstat_skiplink = !pmcstat_skiplink;
|
|
wprintw(w, "skip empty link %s",
|
|
pmcstat_skiplink ? "on" : "off");
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Look for a callgraph node associated with pmc `pmcid' in the global
|
|
* hash table that corresponds to the given `pc' value in the process map
|
|
* `ppm'.
|
|
*/
|
|
|
|
static void
|
|
pmcpl_ct_node_update(struct pmcpl_ct_node *parent,
|
|
struct pmcpl_ct_node *child, int pmcin, unsigned v, int cd)
|
|
{
|
|
struct pmcpl_ct_arc *arc;
|
|
int i;
|
|
|
|
assert(parent != NULL);
|
|
|
|
/*
|
|
* Find related arc in parent node and
|
|
* increment the sample count.
|
|
*/
|
|
for (i = 0; i < parent->pct_narc; i++) {
|
|
if (parent->pct_arc[i].pcta_child == child) {
|
|
arc = &parent->pct_arc[i];
|
|
pmcpl_ct_samples_grow(&arc->pcta_samples);
|
|
arc->pcta_samples.sb[pmcin] += v;
|
|
/* Estimate call count. */
|
|
if (cd) {
|
|
pmcpl_ct_samples_grow(&arc->pcta_callid);
|
|
if (pmcpl_ct_callid.sb[pmcin] -
|
|
arc->pcta_callid.sb[pmcin] > 1)
|
|
arc->pcta_call++;
|
|
arc->pcta_callid.sb[pmcin] =
|
|
pmcpl_ct_callid.sb[pmcin];
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* No arc found for us, add ourself to the parent.
|
|
*/
|
|
pmcpl_ct_arc_grow(parent->pct_narc,
|
|
&parent->pct_arc_c, &parent->pct_arc);
|
|
arc = &parent->pct_arc[parent->pct_narc];
|
|
pmcpl_ct_samples_grow(&arc->pcta_samples);
|
|
arc->pcta_samples.sb[pmcin] = v;
|
|
arc->pcta_call = 1;
|
|
if (cd) {
|
|
pmcpl_ct_samples_grow(&arc->pcta_callid);
|
|
arc->pcta_callid.sb[pmcin] = pmcpl_ct_callid.sb[pmcin];
|
|
}
|
|
arc->pcta_child = child;
|
|
parent->pct_narc++;
|
|
}
|
|
|
|
/*
|
|
* Lookup by image/pc.
|
|
*/
|
|
|
|
static struct pmcpl_ct_node *
|
|
pmcpl_ct_node_hash_lookup(struct pmcstat_image *image, uintfptr_t pc,
|
|
struct pmcstat_symbol *sym, char *fl, char *fn)
|
|
{
|
|
int i;
|
|
unsigned int hash;
|
|
struct pmcpl_ct_node *ct;
|
|
struct pmcpl_ct_node_hash *h;
|
|
pmcstat_interned_string ifl, ifn;
|
|
|
|
if (fn != NULL) {
|
|
ifl = pmcstat_string_intern(fl);
|
|
ifn = pmcstat_string_intern(fn);
|
|
} else {
|
|
ifl = 0;
|
|
ifn = 0;
|
|
}
|
|
|
|
for (hash = i = 0; i < (int)sizeof(uintfptr_t); i++)
|
|
hash += (pc >> i) & 0xFF;
|
|
|
|
hash &= PMCSTAT_HASH_MASK;
|
|
|
|
STAILQ_FOREACH(h, &pmcpl_ct_node_hash[hash], pch_next) {
|
|
ct = h->pch_ctnode;
|
|
|
|
assert(ct != NULL);
|
|
|
|
if (ct->pct_image == image && ct->pct_func == pc) {
|
|
if (fn == NULL)
|
|
return (ct);
|
|
if (ct->pct_type == PMCPL_PCT_NAME &&
|
|
ct->pct_ifl == ifl && ct->pct_ifn == ifn)
|
|
return (ct);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We haven't seen this (pmcid, pc) tuple yet, so allocate a
|
|
* new callgraph node and a new hash table entry for it.
|
|
*/
|
|
ct = pmcpl_ct_node_allocate();
|
|
if ((h = malloc(sizeof(*h))) == NULL)
|
|
err(EX_OSERR, "ERROR: Could not allocate callgraph node");
|
|
|
|
if (fn != NULL) {
|
|
ct->pct_type = PMCPL_PCT_NAME;
|
|
ct->pct_ifl = ifl;
|
|
ct->pct_ifn = ifn;
|
|
} else
|
|
ct->pct_type = PMCPL_PCT_ADDR;
|
|
ct->pct_image = image;
|
|
ct->pct_func = pc;
|
|
ct->pct_sym = sym;
|
|
|
|
h->pch_ctnode = ct;
|
|
STAILQ_INSERT_HEAD(&pmcpl_ct_node_hash[hash], h, pch_next);
|
|
return (ct);
|
|
}
|
|
|
|
/*
|
|
* Record a callchain.
|
|
*/
|
|
|
|
void
|
|
pmcpl_ct_process(struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr,
|
|
uint32_t nsamples, uintfptr_t *cc, int usermode, uint32_t cpu)
|
|
{
|
|
int i, n, pmcin;
|
|
uintfptr_t pc, loadaddress;
|
|
struct pmcstat_image *image;
|
|
struct pmcstat_symbol *sym;
|
|
struct pmcstat_pcmap *ppm[PMC_CALLCHAIN_DEPTH_MAX];
|
|
struct pmcstat_process *km;
|
|
struct pmcpl_ct_node *ct;
|
|
struct pmcpl_ct_node *ctl[PMC_CALLCHAIN_DEPTH_MAX+1];
|
|
|
|
(void) cpu;
|
|
|
|
assert(nsamples>0 && nsamples<=PMC_CALLCHAIN_DEPTH_MAX);
|
|
|
|
/* Get the PMC index. */
|
|
pmcin = pmcr->pr_pmcin;
|
|
|
|
/*
|
|
* Validate mapping for the callchain.
|
|
* Go from bottom to first invalid entry.
|
|
*/
|
|
km = pmcstat_kernproc;
|
|
for (n = 0; n < (int)nsamples; n++) {
|
|
ppm[n] = pmcstat_process_find_map(usermode ?
|
|
pp : km, cc[n]);
|
|
if (ppm[n] == NULL) {
|
|
/* Detect full frame capture (kernel + user). */
|
|
if (!usermode) {
|
|
ppm[n] = pmcstat_process_find_map(pp, cc[n]);
|
|
if (ppm[n] != NULL)
|
|
km = pp;
|
|
}
|
|
}
|
|
if (ppm[n] == NULL)
|
|
break;
|
|
}
|
|
if (n-- == 0) {
|
|
pmcstat_stats.ps_callchain_dubious_frames++;
|
|
pmcr->pr_dubious_frames++;
|
|
return;
|
|
}
|
|
|
|
/* Increase the call generation counter. */
|
|
pmcpl_ct_samples_grow(&pmcpl_ct_callid);
|
|
pmcpl_ct_callid.sb[pmcin]++;
|
|
|
|
/*
|
|
* Build node list.
|
|
*/
|
|
ctl[0] = pmcpl_ct_root;
|
|
for (i = 1; n >= 0; n--) {
|
|
image = ppm[n]->ppm_image;
|
|
loadaddress = ppm[n]->ppm_lowpc +
|
|
image->pi_vaddr - image->pi_start;
|
|
/* Convert to an offset in the image. */
|
|
pc = cc[n] - loadaddress;
|
|
/*
|
|
* Try determine the function at this offset. If we can't
|
|
* find a function round leave the `pc' value alone.
|
|
*/
|
|
if ((sym = pmcstat_symbol_search(image, pc)) != NULL)
|
|
pc = sym->ps_start;
|
|
else
|
|
pmcstat_stats.ps_samples_unknown_function++;
|
|
|
|
ct = pmcpl_ct_node_hash_lookup(image, pc, sym, NULL, NULL);
|
|
if (ct == NULL) {
|
|
pmcstat_stats.ps_callchain_dubious_frames++;
|
|
continue;
|
|
}
|
|
ctl[i++] = ct;
|
|
}
|
|
/* No valid node found. */
|
|
if (i == 1)
|
|
return;
|
|
n = i;
|
|
|
|
ct = ctl[0];
|
|
for (i = 1; i < n; i++)
|
|
pmcpl_ct_node_update(ctl[i-1], ctl[i], pmcin, 1, 1);
|
|
|
|
/*
|
|
* Increment the sample count for this PMC.
|
|
*/
|
|
pmcpl_ct_samples_grow(&ctl[n-1]->pct_samples);
|
|
ctl[n-1]->pct_samples.sb[pmcin]++;
|
|
|
|
/* Update per instruction sample if required. */
|
|
if (args.pa_ctdumpinstr)
|
|
pmcpl_ct_instr_add(ctl[n-1], pmcin, cc[0] -
|
|
(ppm[0]->ppm_lowpc + ppm[0]->ppm_image->pi_vaddr -
|
|
ppm[0]->ppm_image->pi_start), 1);
|
|
}
|
|
|
|
/*
|
|
* Print node child cost.
|
|
*/
|
|
|
|
static void
|
|
pmcpl_ct_node_printchild(struct pmcpl_ct_node *ct, uintfptr_t paddr,
|
|
int pline)
|
|
{
|
|
int i, j, line;
|
|
uintfptr_t addr;
|
|
struct pmcpl_ct_node *child;
|
|
char sourcefile[PATH_MAX];
|
|
char funcname[PATH_MAX];
|
|
|
|
/*
|
|
* Child cost.
|
|
* TODO: attach child cost to the real position in the function.
|
|
* TODO: cfn=<fn> / call <ncall> addr(<fn>) / addr(call <fn>) <arccost>
|
|
*/
|
|
for (i=0 ; i<ct->pct_narc; i++) {
|
|
child = ct->pct_arc[i].pcta_child;
|
|
/* Object binary. */
|
|
fprintf(args.pa_graphfile, "cob=%s\n",
|
|
pmcstat_string_unintern(child->pct_image->pi_fullpath));
|
|
/* Child function name. */
|
|
addr = child->pct_image->pi_vaddr + child->pct_func;
|
|
line = 0;
|
|
/* Child function source file. */
|
|
if (child->pct_type == PMCPL_PCT_NAME) {
|
|
fprintf(args.pa_graphfile, "cfi=%s\ncfn=%s\n",
|
|
pmcstat_string_unintern(child->pct_ifl),
|
|
pmcstat_string_unintern(child->pct_ifn));
|
|
} else if (pmcstat_image_addr2line(child->pct_image, addr,
|
|
sourcefile, sizeof(sourcefile), &line,
|
|
funcname, sizeof(funcname))) {
|
|
fprintf(args.pa_graphfile, "cfi=%s\ncfn=%s\n",
|
|
sourcefile, funcname);
|
|
} else {
|
|
if (child->pct_sym != NULL)
|
|
fprintf(args.pa_graphfile,
|
|
"cfi=???\ncfn=%s\n",
|
|
pmcstat_string_unintern(
|
|
child->pct_sym->ps_name));
|
|
else
|
|
fprintf(args.pa_graphfile,
|
|
"cfi=???\ncfn=%p\n", (void *)addr);
|
|
}
|
|
|
|
/* Child function address, line and call count. */
|
|
fprintf(args.pa_graphfile, "calls=%u %p %u\n",
|
|
ct->pct_arc[i].pcta_call, (void *)addr, line);
|
|
|
|
/*
|
|
* Call address, line, sample.
|
|
* TODO: Associate call address to the right location.
|
|
*/
|
|
fprintf(args.pa_graphfile, "%p %u", (void *)paddr, pline);
|
|
for (j = 0; j<pmcstat_npmcs; j++)
|
|
fprintf(args.pa_graphfile, " %u",
|
|
PMCPL_CT_SAMPLE(j, &ct->pct_arc[i].pcta_samples));
|
|
fprintf(args.pa_graphfile, "\n");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Print node self cost.
|
|
*/
|
|
|
|
static void
|
|
pmcpl_ct_node_printself(struct pmcpl_ct_node *ct)
|
|
{
|
|
int i, j, fline, line;
|
|
uintfptr_t faddr, addr;
|
|
char sourcefile[PATH_MAX];
|
|
char funcname[PATH_MAX];
|
|
|
|
/*
|
|
* Object binary.
|
|
*/
|
|
fprintf(args.pa_graphfile, "ob=%s\n",
|
|
pmcstat_string_unintern(ct->pct_image->pi_fullpath));
|
|
|
|
/*
|
|
* Function name.
|
|
*/
|
|
faddr = ct->pct_image->pi_vaddr + ct->pct_func;
|
|
fline = 0;
|
|
if (ct->pct_type == PMCPL_PCT_NAME) {
|
|
fprintf(args.pa_graphfile, "fl=%s\nfn=%s\n",
|
|
pmcstat_string_unintern(ct->pct_ifl),
|
|
pmcstat_string_unintern(ct->pct_ifn));
|
|
} else if (pmcstat_image_addr2line(ct->pct_image, faddr,
|
|
sourcefile, sizeof(sourcefile), &fline,
|
|
funcname, sizeof(funcname))) {
|
|
fprintf(args.pa_graphfile, "fl=%s\nfn=%s\n",
|
|
sourcefile, funcname);
|
|
} else {
|
|
if (ct->pct_sym != NULL)
|
|
fprintf(args.pa_graphfile, "fl=???\nfn=%s\n",
|
|
pmcstat_string_unintern(ct->pct_sym->ps_name));
|
|
else
|
|
fprintf(args.pa_graphfile, "fl=???\nfn=%p\n",
|
|
(void *)(ct->pct_image->pi_vaddr + ct->pct_func));
|
|
}
|
|
|
|
/*
|
|
* Self cost.
|
|
*/
|
|
if (ct->pct_ninstr > 0) {
|
|
/*
|
|
* Per location cost.
|
|
*/
|
|
for (i = 0; i < ct->pct_ninstr; i++) {
|
|
addr = ct->pct_image->pi_vaddr +
|
|
ct->pct_instr[i].pctf_func;
|
|
line = 0;
|
|
pmcstat_image_addr2line(ct->pct_image, addr,
|
|
sourcefile, sizeof(sourcefile), &line,
|
|
funcname, sizeof(funcname));
|
|
fprintf(args.pa_graphfile, "%p %u",
|
|
(void *)addr, line);
|
|
for (j = 0; j<pmcstat_npmcs; j++)
|
|
fprintf(args.pa_graphfile, " %u",
|
|
PMCPL_CT_SAMPLE(j,
|
|
&ct->pct_instr[i].pctf_samples));
|
|
fprintf(args.pa_graphfile, "\n");
|
|
}
|
|
} else {
|
|
/* Global cost function cost. */
|
|
fprintf(args.pa_graphfile, "%p %u", (void *)faddr, fline);
|
|
for (i = 0; i<pmcstat_npmcs ; i++)
|
|
fprintf(args.pa_graphfile, " %u",
|
|
PMCPL_CT_SAMPLE(i, &ct->pct_samples));
|
|
fprintf(args.pa_graphfile, "\n");
|
|
}
|
|
|
|
pmcpl_ct_node_printchild(ct, faddr, fline);
|
|
}
|
|
|
|
static void
|
|
pmcpl_ct_printnode(struct pmcpl_ct_node *ct)
|
|
{
|
|
int i;
|
|
|
|
if (ct == pmcpl_ct_root) {
|
|
fprintf(args.pa_graphfile, "fn=root\n");
|
|
fprintf(args.pa_graphfile, "0x0 1");
|
|
for (i = 0; i<pmcstat_npmcs ; i++)
|
|
fprintf(args.pa_graphfile, " 0");
|
|
fprintf(args.pa_graphfile, "\n");
|
|
pmcpl_ct_node_printchild(ct, 0, 0);
|
|
} else
|
|
pmcpl_ct_node_printself(ct);
|
|
}
|
|
|
|
/*
|
|
* Breadth first traversal.
|
|
*/
|
|
|
|
static void
|
|
pmcpl_ct_bfs(struct pmcpl_ct_node *ct)
|
|
{
|
|
int i;
|
|
struct pmcpl_ct_node_hash *pch, *pchc;
|
|
struct pmcpl_ct_node *child;
|
|
STAILQ_HEAD(,pmcpl_ct_node_hash) q;
|
|
|
|
STAILQ_INIT(&q);
|
|
if ((pch = malloc(sizeof(*pch))) == NULL)
|
|
err(EX_OSERR, "ERROR: Cannot allocate queue");
|
|
pch->pch_ctnode = ct;
|
|
STAILQ_INSERT_TAIL(&q, pch, pch_next);
|
|
ct->pct_color = PMCPL_PCT_BLACK;
|
|
|
|
while (!STAILQ_EMPTY(&q)) {
|
|
pch = STAILQ_FIRST(&q);
|
|
STAILQ_REMOVE_HEAD(&q, pch_next);
|
|
pmcpl_ct_printnode(pch->pch_ctnode);
|
|
for (i = 0; i<pch->pch_ctnode->pct_narc; i++) {
|
|
child = pch->pch_ctnode->pct_arc[i].pcta_child;
|
|
if (child->pct_color == PMCPL_PCT_WHITE) {
|
|
child->pct_color = PMCPL_PCT_BLACK;
|
|
if ((pchc = malloc(sizeof(*pchc))) == NULL)
|
|
err(EX_OSERR,
|
|
"ERROR: Cannot allocate queue");
|
|
pchc->pch_ctnode = child;
|
|
STAILQ_INSERT_TAIL(&q, pchc, pch_next);
|
|
}
|
|
}
|
|
free(pch);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Detect and fix inlined location.
|
|
*/
|
|
|
|
static void
|
|
_pmcpl_ct_expand_inline(struct pmcpl_ct_node *ct)
|
|
{
|
|
int i, j;
|
|
unsigned fline, line, v;
|
|
uintfptr_t faddr, addr, pc;
|
|
char sourcefile[PATH_MAX];
|
|
char ffuncname[PATH_MAX], funcname[PATH_MAX];
|
|
char buffer[PATH_MAX];
|
|
struct pmcpl_ct_node *child;
|
|
|
|
/*
|
|
* Resolve parent and compare to each instr location.
|
|
*/
|
|
faddr = ct->pct_image->pi_vaddr + ct->pct_func;
|
|
fline = 0;
|
|
if (!pmcstat_image_addr2line(ct->pct_image, faddr,
|
|
sourcefile, sizeof(sourcefile), &fline,
|
|
ffuncname, sizeof(ffuncname)))
|
|
return;
|
|
|
|
for (i = 0; i < ct->pct_ninstr; i++) {
|
|
addr = ct->pct_image->pi_vaddr +
|
|
ct->pct_instr[i].pctf_func;
|
|
line = 0;
|
|
if (!pmcstat_image_addr2line(ct->pct_image, addr,
|
|
sourcefile, sizeof(sourcefile), &line,
|
|
funcname, sizeof(funcname)))
|
|
continue;
|
|
|
|
if (strcmp(funcname, ffuncname) == 0)
|
|
continue;
|
|
|
|
/*
|
|
* - Lookup/create inline node by function name.
|
|
* - Move instr PMCs to the inline node.
|
|
* - Link nodes.
|
|
* The lookup create a specific node per image/pc.
|
|
*/
|
|
if (args.pa_verbosity >= 2)
|
|
fprintf(args.pa_printfile,
|
|
"WARNING: inlined function at %p %s in %s\n",
|
|
(void *)addr, funcname, ffuncname);
|
|
|
|
snprintf(buffer, sizeof(buffer), "%s@%s",
|
|
funcname, ffuncname);
|
|
child = pmcpl_ct_node_hash_lookup(ct->pct_image,
|
|
ct->pct_func, ct->pct_sym, sourcefile, buffer);
|
|
assert(child != NULL);
|
|
pc = ct->pct_instr[i].pctf_func;
|
|
for (j = 0; j<pmcstat_npmcs; j++) {
|
|
v = PMCPL_CT_SAMPLE(j,
|
|
&ct->pct_instr[i].pctf_samples);
|
|
if (v == 0)
|
|
continue;
|
|
pmcpl_ct_instr_add(child, j, pc, v);
|
|
pmcpl_ct_node_update(ct, child, j, v, 0);
|
|
if (j < ct->pct_samples.npmcs)
|
|
ct->pct_samples.sb[j] -=
|
|
ct->pct_instr[i].pctf_samples.sb[j];
|
|
ct->pct_instr[i].pctf_samples.sb[j] = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
pmcpl_ct_expand_inline(void)
|
|
{
|
|
int i;
|
|
struct pmcpl_ct_node_hash *pch;
|
|
|
|
if (!args.pa_ctdumpinstr)
|
|
return;
|
|
|
|
for (i = 0; i < PMCSTAT_NHASH; i++)
|
|
STAILQ_FOREACH(pch, &pmcpl_ct_node_hash[i], pch_next)
|
|
if (pch->pch_ctnode->pct_type == PMCPL_PCT_ADDR)
|
|
_pmcpl_ct_expand_inline(pch->pch_ctnode);
|
|
}
|
|
|
|
/*
|
|
* Clean the PMC name for Kcachegrind formula
|
|
*/
|
|
|
|
static void
|
|
pmcpl_ct_fixup_pmcname(char *s)
|
|
{
|
|
char *p;
|
|
|
|
for (p = s; *p; p++)
|
|
if (!isalnum(*p))
|
|
*p = '_';
|
|
}
|
|
|
|
/*
|
|
* Print a calltree (KCachegrind) for all PMCs.
|
|
*/
|
|
|
|
static void
|
|
pmcpl_ct_print(void)
|
|
{
|
|
int i;
|
|
char name[40];
|
|
struct pmcpl_ct_sample rsamples;
|
|
|
|
pmcpl_ct_samples_root(&rsamples);
|
|
pmcpl_ct_expand_inline();
|
|
|
|
fprintf(args.pa_graphfile,
|
|
"version: 1\n"
|
|
"creator: pmcstat\n"
|
|
"positions: instr line\n"
|
|
"events:");
|
|
for (i=0; i<pmcstat_npmcs; i++) {
|
|
snprintf(name, sizeof(name), "%s_%d",
|
|
pmcstat_pmcindex_to_name(i), i);
|
|
pmcpl_ct_fixup_pmcname(name);
|
|
fprintf(args.pa_graphfile, " %s", name);
|
|
}
|
|
fprintf(args.pa_graphfile, "\nsummary:");
|
|
for (i=0; i<pmcstat_npmcs ; i++)
|
|
fprintf(args.pa_graphfile, " %u",
|
|
PMCPL_CT_SAMPLE(i, &rsamples));
|
|
fprintf(args.pa_graphfile, "\n");
|
|
pmcpl_ct_bfs(pmcpl_ct_root);
|
|
pmcpl_ct_samples_free(&rsamples);
|
|
}
|
|
|
|
int
|
|
pmcpl_ct_configure(char *opt)
|
|
{
|
|
|
|
if (strncmp(opt, "skiplink=", 9) == 0) {
|
|
pmcstat_skiplink = atoi(opt+9);
|
|
} else
|
|
return (0);
|
|
|
|
return (1);
|
|
}
|
|
|
|
int
|
|
pmcpl_ct_init(void)
|
|
{
|
|
int i;
|
|
|
|
pmcpl_ct_root = pmcpl_ct_node_allocate();
|
|
|
|
for (i = 0; i < PMCSTAT_NHASH; i++)
|
|
STAILQ_INIT(&pmcpl_ct_node_hash[i]);
|
|
|
|
pmcpl_ct_samples_init(&pmcpl_ct_callid);
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
pmcpl_ct_shutdown(FILE *mf)
|
|
{
|
|
int i;
|
|
struct pmcpl_ct_node_hash *pch, *pchtmp;
|
|
|
|
(void) mf;
|
|
|
|
if (args.pa_flags & FLAG_DO_CALLGRAPHS)
|
|
pmcpl_ct_print();
|
|
|
|
/*
|
|
* Free memory.
|
|
*/
|
|
|
|
for (i = 0; i < PMCSTAT_NHASH; i++) {
|
|
STAILQ_FOREACH_SAFE(pch, &pmcpl_ct_node_hash[i], pch_next,
|
|
pchtmp) {
|
|
pmcpl_ct_node_free(pch->pch_ctnode);
|
|
free(pch);
|
|
}
|
|
}
|
|
|
|
pmcpl_ct_node_free(pmcpl_ct_root);
|
|
pmcpl_ct_root = NULL;
|
|
|
|
pmcpl_ct_samples_free(&pmcpl_ct_callid);
|
|
}
|
|
|