forked from Minki/linux
b424eba271
The 'machine' abstraction was introduced with 'perf kvm' where we could have samples for the host and multiple guests, but at the time we ended up keeping the list of all machines threads all in session->host_machine. Move the threads rb_tree to struct machine to separate the namespaces. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-mdg7sm6j3va09vtgj49gbsrp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
141 lines
2.7 KiB
C
141 lines
2.7 KiB
C
#include "../perf.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "session.h"
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#include "thread.h"
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#include "util.h"
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#include "debug.h"
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static struct thread *thread__new(pid_t pid)
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{
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struct thread *self = zalloc(sizeof(*self));
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if (self != NULL) {
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map_groups__init(&self->mg);
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self->pid = pid;
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self->comm = malloc(32);
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if (self->comm)
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snprintf(self->comm, 32, ":%d", self->pid);
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}
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return self;
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}
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void thread__delete(struct thread *self)
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{
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map_groups__exit(&self->mg);
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free(self->comm);
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free(self);
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}
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int thread__set_comm(struct thread *self, const char *comm)
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{
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int err;
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if (self->comm)
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free(self->comm);
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self->comm = strdup(comm);
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err = self->comm == NULL ? -ENOMEM : 0;
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if (!err) {
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self->comm_set = true;
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map_groups__flush(&self->mg);
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}
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return err;
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}
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int thread__comm_len(struct thread *self)
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{
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if (!self->comm_len) {
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if (!self->comm)
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return 0;
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self->comm_len = strlen(self->comm);
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}
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return self->comm_len;
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}
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static size_t thread__fprintf(struct thread *self, FILE *fp)
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{
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return fprintf(fp, "Thread %d %s\n", self->pid, self->comm) +
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map_groups__fprintf(&self->mg, verbose, fp);
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}
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struct thread *machine__findnew_thread(struct machine *self, pid_t pid)
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{
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struct rb_node **p = &self->threads.rb_node;
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struct rb_node *parent = NULL;
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struct thread *th;
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/*
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* Font-end cache - PID lookups come in blocks,
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* so most of the time we dont have to look up
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* the full rbtree:
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*/
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if (self->last_match && self->last_match->pid == pid)
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return self->last_match;
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while (*p != NULL) {
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parent = *p;
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th = rb_entry(parent, struct thread, rb_node);
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if (th->pid == pid) {
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self->last_match = th;
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return th;
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}
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if (pid < th->pid)
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p = &(*p)->rb_left;
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else
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p = &(*p)->rb_right;
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}
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th = thread__new(pid);
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if (th != NULL) {
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rb_link_node(&th->rb_node, parent, p);
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rb_insert_color(&th->rb_node, &self->threads);
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self->last_match = th;
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}
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return th;
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}
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void thread__insert_map(struct thread *self, struct map *map)
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{
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map_groups__fixup_overlappings(&self->mg, map, verbose, stderr);
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map_groups__insert(&self->mg, map);
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}
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int thread__fork(struct thread *self, struct thread *parent)
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{
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int i;
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if (parent->comm_set) {
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if (self->comm)
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free(self->comm);
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self->comm = strdup(parent->comm);
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if (!self->comm)
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return -ENOMEM;
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self->comm_set = true;
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}
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for (i = 0; i < MAP__NR_TYPES; ++i)
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if (map_groups__clone(&self->mg, &parent->mg, i) < 0)
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return -ENOMEM;
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return 0;
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}
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size_t machine__fprintf(struct machine *machine, FILE *fp)
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{
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size_t ret = 0;
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struct rb_node *nd;
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for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) {
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struct thread *pos = rb_entry(nd, struct thread, rb_node);
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ret += thread__fprintf(pos, fp);
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}
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return ret;
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}
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