+++ /dev/null
-/*
- * Copyright (C) 2011 Julien Desfossez
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License Version 2 as
- * published by the Free Software Foundation;
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include "common.h"
-
-struct processtop *find_process_tid(struct lttngtop *ctx, int tid, char *comm)
-{
- gint i;
- struct processtop *tmp;
-
- for (i = 0; i < ctx->process_table->len; i++) {
- tmp = g_ptr_array_index(ctx->process_table, i);
- if (tmp && tmp->tid == tid)
- return tmp;
- }
- return NULL;
-}
-
-struct processtop* add_proc(struct lttngtop *ctx, int tid, char *comm,
- unsigned long timestamp)
-{
- struct processtop *newproc;
-
- /* if the PID already exists, we just rename the process */
- /* FIXME : need to integrate with clone/fork/exit to be accurate */
- newproc = find_process_tid(ctx, tid, comm);
- if (!newproc) {
- newproc = malloc(sizeof(struct processtop));
- memset(newproc, 0, sizeof(struct processtop));
- newproc->tid = tid;
- newproc->birth = timestamp;
- newproc->process_files_table = g_ptr_array_new();
- newproc->threads = g_ptr_array_new();
- newproc->perf = g_hash_table_new(g_direct_hash, g_direct_equal);
- newproc->iostream = malloc(sizeof(struct iostream));
- newproc->iostream->ret_read = 0;
- newproc->iostream->ret_write = 0;
- newproc->iostream->ret_total = 0;
- newproc->iostream->syscall_info = NULL;
- g_ptr_array_add(ctx->process_table, newproc);
- }
- newproc->comm = strdup(comm);
-
- return newproc;
-}
-
-struct processtop* update_proc(struct processtop* proc, int pid, int tid,
- int ppid, char *comm)
-{
- if (proc) {
- proc->pid = pid;
- proc->tid = tid;
- proc->ppid = ppid;
- if (strcmp(proc->comm, comm) != 0) {
- free(proc->comm);
- proc->comm = strdup(comm);
- }
- }
- return proc;
-}
-
-/*
- * This function just sets the time of death of a process.
- * When we rotate the cputime we remove it from the process list.
- */
-void death_proc(struct lttngtop *ctx, int tid, char *comm,
- unsigned long timestamp)
-{
- struct processtop *tmp;
- tmp = find_process_tid(ctx, tid, comm);
- if (tmp && strcmp(tmp->comm, comm) == 0)
- tmp->death = timestamp;
-}
-
-struct processtop* get_proc(struct lttngtop *ctx, int tid, char *comm,
- unsigned long timestamp)
-{
- struct processtop *tmp;
- tmp = find_process_tid(ctx, tid, comm);
- if (tmp && strcmp(tmp->comm, comm) == 0)
- return tmp;
- return add_proc(ctx, tid, comm, timestamp);
-}
-
-void add_thread(struct processtop *parent, struct processtop *thread)
-{
- gint i;
- struct processtop *tmp;
-
- for (i = 0; i < parent->threads->len; i++) {
- tmp = g_ptr_array_index(parent->threads, i);
- if (tmp == thread)
- return;
- }
- g_ptr_array_add(parent->threads, thread);
-}
-
-struct cputime* add_cpu(int cpu)
-{
- struct cputime *newcpu;
-
- newcpu = malloc(sizeof(struct cputime));
- newcpu->id = cpu;
- newcpu->current_task = NULL;
- newcpu->perf = g_hash_table_new(g_direct_hash, g_direct_equal);
-
- g_ptr_array_add(lttngtop.cpu_table, newcpu);
-
- return newcpu;
-}
-struct cputime* get_cpu(int cpu)
-{
- gint i;
- struct cputime *tmp;
-
- for (i = 0; i < lttngtop.cpu_table->len; i++) {
- tmp = g_ptr_array_index(lttngtop.cpu_table, i);
- if (tmp->id == cpu)
- return tmp;
- }
-
- return add_cpu(cpu);
-}
-
-/*
- * At the end of a sampling period, we need to display the cpu time for each
- * process and to reset it to zero for the next period
- */
-void rotate_cputime(unsigned long end)
-{
- gint i;
- struct cputime *tmp;
- unsigned long elapsed;
-
- for (i = 0; i < lttngtop.cpu_table->len; i++) {
- tmp = g_ptr_array_index(lttngtop.cpu_table, i);
- elapsed = end - tmp->task_start;
- if (tmp->current_task) {
- tmp->current_task->totalcpunsec += elapsed;
- tmp->current_task->threadstotalcpunsec += elapsed;
- if (tmp->current_task->pid != tmp->current_task->tid &&
- tmp->current_task->threadparent) {
- tmp->current_task->threadparent->threadstotalcpunsec += elapsed;
- }
- }
- tmp->task_start = end;
- }
-}
-
-void reset_perf_counter(gpointer key, gpointer value, gpointer user_data)
-{
- ((struct perfcounter*) value)->count = 0;
-}
-
-void copy_perf_counter(gpointer key, gpointer value, gpointer new_table)
-{
- struct perfcounter *newperf;
-
- newperf = malloc(sizeof(struct perfcounter));
- newperf->count = ((struct perfcounter *) value)->count;
- newperf->visible = ((struct perfcounter *) value)->visible;
- newperf->sort = ((struct perfcounter *) value)->sort;
- g_hash_table_insert((GHashTable *) new_table, key, newperf);
-}
-
-void rotate_perfcounter() {
- int i;
- struct processtop *tmp;
- for (i = 0; i < lttngtop.process_table->len; i++) {
- tmp = g_ptr_array_index(lttngtop.process_table, i);
- g_hash_table_foreach(tmp->perf, reset_perf_counter, NULL);
- }
-}
-
-void cleanup_processtop()
-{
- gint i;
- struct processtop *tmp;
-
- for (i = 0; i < lttngtop.process_table->len; i++) {
- tmp = g_ptr_array_index(lttngtop.process_table, i);
- tmp->totalcpunsec = 0;
- tmp->threadstotalcpunsec = 0;
- tmp->iostream->ret_read = 0;
- tmp->iostream->ret_write = 0;
- }
-}
-
-struct lttngtop* get_copy_lttngtop(unsigned long start, unsigned long end)
-{
- gint i, j;
- unsigned long time;
- struct lttngtop *dst;
- struct processtop *tmp, *tmp2, *new;
- struct cputime *tmpcpu, *newcpu;
- struct files *tmpfile, *newfile;
-
- dst = malloc(sizeof(struct lttngtop));
- dst = memset(dst, 0, sizeof(struct lttngtop));
- dst->start = start;
- dst->end = end;
- dst->process_table = g_ptr_array_new();
- dst->files_table = g_ptr_array_new();
- dst->cpu_table = g_ptr_array_new();
- dst->perf_list = g_hash_table_new(g_direct_hash, g_direct_equal);
-
- rotate_cputime(end);
-
- g_hash_table_foreach(lttngtop.perf_list, copy_perf_counter, dst->perf_list);
- for (i = 0; i < lttngtop.process_table->len; i++) {
- tmp = g_ptr_array_index(lttngtop.process_table, i);
- new = malloc(sizeof(struct processtop));
-
- memcpy(new, tmp, sizeof(struct processtop));
- new->threads = g_ptr_array_new();
- new->comm = strdup(tmp->comm);
- new->process_files_table = g_ptr_array_new();
- new->perf = g_hash_table_new(g_direct_hash, g_direct_equal);
- g_hash_table_foreach(tmp->perf, copy_perf_counter, new->perf);
-
- new->iostream = malloc(sizeof(struct iostream));
- memcpy(new->iostream, tmp->iostream, sizeof(struct iostream));
- /* compute the stream speed */
- if (end - start != 0)
- {
- time = (end - start)/NSEC_PER_SEC;
- new->iostream->ret_read = new->iostream->ret_read/(time);
- new->iostream->ret_write = new->iostream->ret_write/(time);
- }
-
- for (j = 0; j < tmp->process_files_table->len; j++) {
- tmpfile = g_ptr_array_index(tmp->process_files_table, j);
- newfile = malloc(sizeof(struct files));
-
- memcpy(newfile, tmpfile, sizeof(struct files));
-
- newfile->name = strdup(tmpfile->name);
- newfile->ref = new;
-
- g_ptr_array_add(new->process_files_table, newfile);
- g_ptr_array_add(dst->files_table, newfile);
-
- /*
- * if the process died during the last period, we remove all
- * files associated with if after the copy
- */
- if (tmp->death > 0 && tmp->death < end) {
- g_ptr_array_remove(tmp->process_files_table, tmpfile);
- free(tmpfile);
- }
- }
- g_ptr_array_add(dst->process_table, new);
-
- /*
- * if the process died during the last period, we remove it from
- * the current process list after the copy
- */
- if (tmp->death > 0 && tmp->death < end) {
- g_ptr_array_remove(lttngtop.process_table, tmp);
- g_ptr_array_free(tmp->threads, TRUE);
- free(tmp->comm);
- g_ptr_array_free(tmp->process_files_table, TRUE);
- g_hash_table_destroy(tmp->perf);
- free(tmp);
- }
- }
- rotate_perfcounter();
-
- for (i = 0; i < lttngtop.cpu_table->len; i++) {
- tmpcpu = g_ptr_array_index(lttngtop.cpu_table, i);
- newcpu = malloc(sizeof(struct cputime));
- memcpy(newcpu, tmpcpu, sizeof(struct cputime));
- newcpu->perf = g_hash_table_new(g_direct_hash, g_direct_equal);
- g_hash_table_foreach(tmpcpu->perf, copy_perf_counter, newcpu->perf);
- /*
- * note : we don't care about the current process pointer in the copy
- * so the reference is invalid after the memcpy
- */
- g_ptr_array_add(dst->cpu_table, newcpu);
- }
- /* create the threads index if required */
- for (i = 0; i < dst->process_table->len; i++) {
- tmp = g_ptr_array_index(dst->process_table, i);
- if (tmp->pid == tmp->tid) {
- for (j = 0; j < dst->process_table->len; j++) {
- tmp2 = g_ptr_array_index(dst->process_table, j);
- if (tmp2->pid == tmp->pid) {
- tmp2->threadparent = tmp;
- g_ptr_array_add(tmp->threads, tmp2);
- }
- }
- }
- }
-
- // update_global_stats(dst);
- cleanup_processtop();
-
- return dst;
-}
-
projects / lttngtop.git / blobdiff