+++ /dev/null
-/*
- * Copyright (C) 2011-2012 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.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#define _GNU_SOURCE
-#include <config.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <babeltrace/babeltrace.h>
-#include <babeltrace/ctf/events.h>
-#include <babeltrace/ctf/callbacks.h>
-#include <babeltrace/ctf/iterator.h>
-#include <fcntl.h>
-#include <pthread.h>
-#include <popt.h>
-#include <stdlib.h>
-#include <ftw.h>
-#include <dirent.h>
-#include <ctype.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <fts.h>
-#include <assert.h>
-
-#include "lttngtoptypes.h"
-#include "cputop.h"
-#include "iostreamtop.h"
-#include "cursesdisplay.h"
-#include "common.h"
-
-#define DEFAULT_FILE_ARRAY_SIZE 1
-
-const char *opt_input_path;
-
-struct lttngtop *copy;
-pthread_t display_thread;
-pthread_t timer_thread;
-
-unsigned long refresh_display = 1 * NSEC_PER_SEC;
-unsigned long last_display_update = 0;
-int quit = 0;
-
-enum {
- OPT_NONE = 0,
- OPT_HELP,
- OPT_LIST,
- OPT_VERBOSE,
- OPT_DEBUG,
- OPT_NAMES,
-};
-
-static struct poptOption long_options[] = {
- /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
- { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL },
- { NULL, 0, 0, NULL, 0, NULL, NULL },
-};
-
-void *refresh_thread(void *p)
-{
- while (1) {
- if (quit)
- return NULL;
- sem_wait(&pause_sem);
- sem_post(&pause_sem);
- sem_post(&timer);
- sleep(refresh_display/NSEC_PER_SEC);
- }
-}
-
-void *ncurses_display(void *p)
-{
- unsigned int current_display_index = 0;
-
- sem_wait(&bootstrap);
- /*
- * Prevent the 1 second delay when we hit ESC
- */
- ESCDELAY = 0;
- init_ncurses();
-
- while (1) {
- sem_wait(&timer);
- sem_wait(&goodtodisplay);
- sem_wait(&pause_sem);
-
- copy = g_ptr_array_index(copies, current_display_index);
- assert(copy);
- display(current_display_index++);
-
- sem_post(&goodtoupdate);
- sem_post(&pause_sem);
-
- if (quit) {
- reset_ncurses();
- pthread_exit(0);
- }
- }
-}
-
-/*
- * hook on each event to check the timestamp and refresh the display if
- * necessary
- */
-enum bt_cb_ret check_timestamp(struct bt_ctf_event *call_data, void *private_data)
-{
- unsigned long timestamp;
-
- timestamp = bt_ctf_get_timestamp(call_data);
- if (timestamp == -1ULL)
- goto error;
-
- if (last_display_update == 0)
- last_display_update = timestamp;
-
- if (timestamp - last_display_update >= refresh_display) {
- sem_wait(&goodtoupdate);
- g_ptr_array_add(copies, get_copy_lttngtop(last_display_update,
- timestamp));
- sem_post(&goodtodisplay);
- sem_post(&bootstrap);
- last_display_update = timestamp;
- }
- return BT_CB_OK;
-
-error:
- fprintf(stderr, "check_timestamp callback error\n");
- return BT_CB_ERROR_STOP;
-}
-
-/*
- * get_perf_counter : get or create and return a perf_counter struct for
- * either a process or a cpu (only one of the 2 parameters mandatory)
- */
-struct perfcounter *get_perf_counter(const char *name, struct processtop *proc,
- struct cputime *cpu)
-{
- struct perfcounter *ret;
- GHashTable *table;
-
- if (proc)
- table = proc->perf;
- else if (cpu)
- table = cpu->perf;
- else
- goto error;
-
- ret = g_hash_table_lookup(table, (gpointer) name);
- if (ret)
- goto end;
-
- ret = g_new0(struct perfcounter, 1);
- /* by default, make it visible in the UI */
- ret->visible = 1;
- g_hash_table_insert(table, (gpointer) strdup(name), ret);
-
-end:
- return ret;
-
-error:
- return NULL;
-}
-
-void update_perf_value(struct processtop *proc, struct cputime *cpu,
- const char *name, int value)
-{
- struct perfcounter *cpu_perf, *process_perf;
-
- cpu_perf = get_perf_counter(name, NULL, cpu);
- if (cpu_perf->count < value) {
- process_perf = get_perf_counter(name, proc, NULL);
- process_perf->count += value - cpu_perf->count;
- cpu_perf->count = value;
- }
-}
-
-void extract_perf_counter_scope(const struct bt_ctf_event *event,
- const struct definition *scope,
- struct processtop *proc,
- struct cputime *cpu)
-{
- struct definition const * const *list = NULL;
- const struct definition *field;
- unsigned int count;
- struct perfcounter *perfcounter;
- GHashTableIter iter;
- gpointer key;
- int ret;
-
- if (!scope)
- goto end;
-
- ret = bt_ctf_get_field_list(event, scope, &list, &count);
- if (ret < 0)
- goto end;
-
- if (count == 0)
- goto end;
-
- g_hash_table_iter_init(&iter, global_perf_liszt);
- while (g_hash_table_iter_next (&iter, &key, (gpointer) &perfcounter)) {
- field = bt_ctf_get_field(event, scope, (char *) key);
- if (field) {
- int value = bt_ctf_get_uint64(field);
- if (bt_ctf_field_get_error())
- continue;
- update_perf_value(proc, cpu, (char *) key, value);
- }
- }
-
-end:
- return;
-}
-
-void update_perf_counter(struct processtop *proc, const struct bt_ctf_event *event)
-{
- struct cputime *cpu;
- const struct definition *scope;
-
- cpu = get_cpu(get_cpu_id(event));
-
- scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT);
- extract_perf_counter_scope(event, scope, proc, cpu);
-
- scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT);
- extract_perf_counter_scope(event, scope, proc, cpu);
-
- scope = bt_ctf_get_top_level_scope(event, BT_EVENT_CONTEXT);
- extract_perf_counter_scope(event, scope, proc, cpu);
-}
-
-enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data,
- void *private_data)
-{
- int pid, tid, ppid;
- char *comm;
- struct processtop *parent, *child;
- unsigned long timestamp;
-
- timestamp = bt_ctf_get_timestamp(call_data);
- if (timestamp == -1ULL)
- goto error;
-
- pid = get_context_pid(call_data);
- if (pid == -1ULL) {
- goto error;
- }
- tid = get_context_tid(call_data);
- if (tid == -1ULL) {
- goto error;
- }
- ppid = get_context_ppid(call_data);
- if (ppid == -1ULL) {
- goto error;
- }
- comm = get_context_comm(call_data);
- if (!comm) {
- goto error;
- }
-
- /* find or create the current process */
- child = find_process_tid(<tngtop, tid, comm);
- if (!child)
- child = add_proc(<tngtop, tid, comm, timestamp);
- update_proc(child, pid, tid, ppid, comm);
-
- if (pid != tid) {
- /* find or create the parent */
- parent = find_process_tid(<tngtop, pid, comm);
- if (!parent) {
- parent = add_proc(<tngtop, pid, comm, timestamp);
- parent->pid = pid;
- }
-
- /* attach the parent to the current process */
- child->threadparent = parent;
- add_thread(parent, child);
- }
-
- update_perf_counter(child, call_data);
-
- return BT_CB_OK;
-
-error:
- return BT_CB_ERROR_STOP;
-}
-
-void init_lttngtop()
-{
- copies = g_ptr_array_new();
- global_perf_liszt = g_hash_table_new(g_str_hash, g_str_equal);
-
- sem_init(&goodtodisplay, 0, 0);
- sem_init(&goodtoupdate, 0, 1);
- sem_init(&timer, 0, 1);
- sem_init(&bootstrap, 0, 0);
- sem_init(&pause_sem, 0, 1);
- sem_init(&end_trace_sem, 0, 0);
-
- reset_global_counters();
- lttngtop.nbproc = 0;
- lttngtop.nbthreads = 0;
- lttngtop.nbfiles = 0;
-
- lttngtop.process_table = g_ptr_array_new();
- lttngtop.files_table = g_ptr_array_new();
- lttngtop.cpu_table = g_ptr_array_new();
-}
-
-void usage(FILE *fp)
-{
- fprintf(fp, "LTTngTop %s\n\n", VERSION);
- fprintf(fp, "Usage : lttngtop /path/to/trace\n");
-}
-
-/*
- * Return 0 if caller should continue, < 0 if caller should return
- * error, > 0 if caller should exit without reporting error.
- */
-static int parse_options(int argc, char **argv)
-{
- poptContext pc;
- int opt, ret = 0;
-
- if (argc == 1) {
- usage(stdout);
- return 1; /* exit cleanly */
- }
-
- pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0);
- poptReadDefaultConfig(pc, 0);
-
- while ((opt = poptGetNextOpt(pc)) != -1) {
- switch (opt) {
- case OPT_HELP:
- usage(stdout);
- ret = 1; /* exit cleanly */
- goto end;
- default:
- ret = -EINVAL;
- goto end;
- }
- }
-
- opt_input_path = poptGetArg(pc);
- if (!opt_input_path) {
- ret = -EINVAL;
- goto end;
- }
-end:
- if (pc) {
- poptFreeContext(pc);
- }
- return ret;
-}
-
-void iter_trace(struct bt_context *bt_ctx)
-{
- struct bt_ctf_iter *iter;
- struct bt_iter_pos begin_pos;
- const struct bt_ctf_event *event;
- int ret = 0;
-
- begin_pos.type = BT_SEEK_BEGIN;
- iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL);
-
- /* at each event check if we need to refresh */
- bt_ctf_iter_add_callback(iter, 0, NULL, 0,
- check_timestamp,
- NULL, NULL, NULL);
- /* at each event, verify the status of the process table */
- bt_ctf_iter_add_callback(iter, 0, NULL, 0,
- fix_process_table,
- NULL, NULL, NULL);
- /* to handle the scheduling events */
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("sched_switch"),
- NULL, 0, handle_sched_switch, NULL, NULL, NULL);
- /* to clean up the process table */
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("sched_process_free"),
- NULL, 0, handle_sched_process_free, NULL, NULL, NULL);
- /* to get all the process from the statedumps */
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string(
- "lttng_statedump_process_state"),
- NULL, 0, handle_statedump_process_state,
- NULL, NULL, NULL);
-
- /* for IO top */
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("exit_syscall"),
- NULL, 0, handle_exit_syscall, NULL, NULL, NULL);
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("sys_write"),
- NULL, 0, handle_sys_write, NULL, NULL, NULL);
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("sys_read"),
- NULL, 0, handle_sys_read, NULL, NULL, NULL);
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("sys_open"),
- NULL, 0, handle_sys_open, NULL, NULL, NULL);
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("sys_close"),
- NULL, 0, handle_sys_close, NULL, NULL, NULL);
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string(
- "lttng_statedump_file_descriptor"),
- NULL, 0, handle_statedump_file_descriptor,
- NULL, NULL, NULL);
-
- while ((event = bt_ctf_iter_read_event(iter)) != NULL) {
- ret = bt_iter_next(bt_ctf_get_iter(iter));
- if (ret < 0)
- goto end_iter;
- }
-
- /* block until quit, we reached the end of the trace */
- sem_wait(&end_trace_sem);
-
-end_iter:
- bt_ctf_iter_destroy(iter);
-}
-
-/*
- * bt_context_add_traces_recursive: Open a trace recursively
- * (copied from BSD code in converter/babeltrace.c)
- *
- * Find each trace present in the subdirectory starting from the given
- * path, and add them to the context. The packet_seek parameter can be
- * NULL: this specify to use the default format packet_seek.
- *
- * Return: 0 on success, nonzero on failure.
- * Unable to open toplevel: failure.
- * Unable to open some subdirectory or file: warn and continue;
- */
-int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path,
- const char *format_str,
- void (*packet_seek)(struct stream_pos *pos,
- size_t offset, int whence))
-{
- FTS *tree;
- FTSENT *node;
- GArray *trace_ids;
- char lpath[PATH_MAX];
- char * const paths[2] = { lpath, NULL };
- int ret = -1;
-
- /*
- * Need to copy path, because fts_open can change it.
- * It is the pointer array, not the strings, that are constant.
- */
- strncpy(lpath, path, PATH_MAX);
- lpath[PATH_MAX - 1] = '\0';
-
- tree = fts_open(paths, FTS_NOCHDIR | FTS_LOGICAL, 0);
- if (tree == NULL) {
- fprintf(stderr, "[error] [Context] Cannot traverse \"%s\" for reading.\n",
- path);
- return -EINVAL;
- }
-
- trace_ids = g_array_new(FALSE, TRUE, sizeof(int));
-
- while ((node = fts_read(tree))) {
- int dirfd, metafd;
-
- if (!(node->fts_info & FTS_D))
- continue;
-
- dirfd = open(node->fts_accpath, 0);
- if (dirfd < 0) {
- fprintf(stderr, "[error] [Context] Unable to open trace "
- "directory file descriptor.\n");
- ret = dirfd;
- goto error;
- }
- metafd = openat(dirfd, "metadata", O_RDONLY);
- if (metafd < 0) {
- close(dirfd);
- ret = -1;
- continue;
- } else {
- int trace_id;
-
- ret = close(metafd);
- if (ret < 0) {
- perror("close");
- goto error;
- }
- ret = close(dirfd);
- if (ret < 0) {
- perror("close");
- goto error;
- }
-
- trace_id = bt_context_add_trace(ctx,
- node->fts_accpath, format_str,
- packet_seek, NULL, NULL);
- if (trace_id < 0) {
- fprintf(stderr, "[warning] [Context] opening trace \"%s\" from %s "
- "for reading.\n", node->fts_accpath, path);
- /* Allow to skip erroneous traces. */
- continue;
- }
- g_array_append_val(trace_ids, trace_id);
- }
- }
-
- g_array_free(trace_ids, TRUE);
- return ret;
-
-error:
- return ret;
-}
-
-static int check_field_requirements(const struct bt_ctf_field_decl *const * field_list,
- int field_cnt, int *tid_check, int *pid_check,
- int *procname_check, int *ppid_check)
-{
- int j;
- struct perfcounter *global;
- const char *name;
-
- for (j = 0; j < field_cnt; j++) {
- name = bt_ctf_get_decl_field_name(field_list[j]);
- if (*tid_check == 0) {
- if (strncmp(name, "tid", 3) == 0)
- (*tid_check)++;
- }
- if (*pid_check == 0) {
- if (strncmp(name, "tid", 3) == 0)
- (*pid_check)++;
- }
- if (*ppid_check == 0) {
- if (strncmp(name, "ppid", 4) == 0)
- (*ppid_check)++;
- }
- if (*procname_check == 0) {
- if (strncmp(name, "procname", 8) == 0)
- (*procname_check)++;
- }
- if (strncmp(name, "perf_", 5) == 0) {
- global = g_hash_table_lookup(global_perf_liszt, (gpointer) name);
- if (!global) {
- global = g_new0(struct perfcounter, 1);
- /* by default, sort on the first perf context */
- if (g_hash_table_size(global_perf_liszt) == 0)
- global->sort = 1;
- global->visible = 1;
- g_hash_table_insert(global_perf_liszt, (gpointer) strdup(name), global);
- }
- }
- }
-
- if (*tid_check == 1 && *pid_check == 1 && *ppid_check == 1 &&
- *procname_check == 1)
- return 0;
-
- return -1;
-}
-
-/*
- * check_requirements: check if the required context informations are available
- *
- * If each mandatory context information is available for at least in one
- * event, return 0 otherwise return -1.
- */
-int check_requirements(struct bt_context *ctx)
-{
- unsigned int i, evt_cnt, field_cnt;
- struct bt_ctf_event_decl *const * evt_list;
- const struct bt_ctf_field_decl *const * field_list;
- int tid_check = 0;
- int pid_check = 0;
- int procname_check = 0;
- int ppid_check = 0;
- int ret = 0;
-
- bt_ctf_get_event_decl_list(0, ctx, &evt_list, &evt_cnt);
- for (i = 0; i < evt_cnt; i++) {
- bt_ctf_get_decl_fields(evt_list[i], BT_STREAM_EVENT_CONTEXT,
- &field_list, &field_cnt);
- ret = check_field_requirements(field_list, field_cnt,
- &tid_check, &pid_check, &procname_check,
- &ppid_check);
-
- bt_ctf_get_decl_fields(evt_list[i], BT_EVENT_CONTEXT,
- &field_list, &field_cnt);
- ret = check_field_requirements(field_list, field_cnt,
- &tid_check, &pid_check, &procname_check,
- &ppid_check);
-
- bt_ctf_get_decl_fields(evt_list[i], BT_STREAM_PACKET_CONTEXT,
- &field_list, &field_cnt);
- ret = check_field_requirements(field_list, field_cnt,
- &tid_check, &pid_check, &procname_check,
- &ppid_check);
- }
-
- if (tid_check == 0) {
- ret = -1;
- fprintf(stderr, "[error] missing tid context information\n");
- }
- if (pid_check == 0) {
- ret = -1;
- fprintf(stderr, "[error] missing pid context information\n");
- }
- if (ppid_check == 0) {
- ret = -1;
- fprintf(stderr, "[error] missing ppid context information\n");
- }
- if (procname_check == 0) {
- ret = -1;
- fprintf(stderr, "[error] missing procname context information\n");
- }
-
- return ret;
-}
-
-int main(int argc, char **argv)
-{
- int ret;
- struct bt_context *bt_ctx = NULL;
-
- ret = parse_options(argc, argv);
- if (ret < 0) {
- fprintf(stdout, "Error parsing options.\n\n");
- usage(stdout);
- exit(EXIT_FAILURE);
- } else if (ret > 0) {
- exit(EXIT_SUCCESS);
- }
-
- init_lttngtop();
-
- bt_ctx = bt_context_create();
- ret = bt_context_add_traces_recursive(bt_ctx, opt_input_path, "ctf", NULL);
- if (ret < 0) {
- fprintf(stderr, "[error] Opening the trace\n");
- goto end;
- }
-
- ret = check_requirements(bt_ctx);
- if (ret < 0) {
- fprintf(stderr, "[error] some mandatory contexts were missing, exiting.\n");
- goto end;
- }
-
- pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL);
- pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL);
-
- iter_trace(bt_ctx);
-
- quit = 1;
- pthread_join(display_thread, NULL);
- pthread_join(timer_thread, NULL);
-
-end:
- bt_context_put(bt_ctx);
- return 0;
-}
projects / lttngtop.git / blobdiff