--- /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.
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdint.h>
+extern "C" {
+#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 "common.h"
+#include "cursesdisplay.h"
+
+#define DEFAULT_FILE_ARRAY_SIZE 1
+
+const char *opt_input_path;
+
+pthread_t display_thread;
+pthread_t timer_thread;
+
+int quit = 0;
+std::string history_file;
+
+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)
+{
+ 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);
+
+ display();
+
+ sem_post(&goodtoupdate);
+ sem_post(&pause_sem);
+
+ if (quit) {
+ reset_ncurses();
+ pthread_exit(0);
+ }
+ }
+}
+
+/*
+ * We soft update each attribute during the execution for perfromance reasons.
+ * Here we write the actual intervals to disk, which are needed to query history.
+ */
+void create_intervals(unsigned long timestamp)
+{
+ StateValue::SharedPtr value;
+
+ for (std::set<Quark>::iterator i = modified_quarks.begin();
+ i != modified_quarks.end();
+ i++) {
+ value = state_system->getCurrentStateValue(*i);
+ /* To force the creation of an interval (which is what we want)
+ we need to pass a different value than the current value.
+ We reapply the correct value afterwards */
+ if (std::tr1::dynamic_pointer_cast<NullStateValue>(value)) {
+ state_system->modifyAttribute(timestamp, *i, 0);
+ } else {
+ state_system->modifyAttribute(timestamp, *i,
+ StateValue::getNullValue());
+ }
+ state_system->updateCurrentState(*i, value);
+ }
+ modified_quarks.clear();
+}
+
+/*
+ * 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 (first_display_update == 0)
+ first_display_update = timestamp;
+
+ if (timestamp - last_display_update >= refresh_display) {
+ sem_wait(&goodtoupdate);
+ create_intervals(timestamp);
+ update_state_on_refresh(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 (specified by root)
+ */
+Quark get_perf_counter(unsigned long timestamp, Quark root, std::string name)
+{
+ Quark perf_counter;
+
+ if (state_system->attributeExists(root, "perf/" + name)) {
+ return state_system->getQuark(root, "perf/" + name);
+ } else {
+ perf_counter = state_system->getQuark(root, "perf/" + name);
+ modify_attribute(timestamp, &perf_counter, "count", 0);
+ modify_attribute(timestamp, &perf_counter, "visible", 1);
+ add_in_sequence(timestamp, perf_counter,
+ state_system->getQuark(root, "perf"));
+ return perf_counter;
+ }
+}
+
+void update_perf_value(unsigned long timestamp, Quark proc, Quark cpu,
+ std::string name, int value)
+{
+ Quark cpu_perf, process_perf;
+ int count;
+
+ cpu_perf = get_perf_counter(timestamp, cpu, name);
+ get_current_attribute_value_int(&cpu_perf, "count", count);
+ if (count < value) {
+ process_perf = get_perf_counter(timestamp, proc, name);
+ increase_attribute(
+ timestamp, &process_perf, "count", value - count);
+ modify_attribute(timestamp, &cpu_perf, "count", value);
+ }
+}
+
+void extract_perf_counter_scope(unsigned long timestamp,
+ const struct bt_ctf_event *event,
+ const struct definition *scope,
+ Quark proc, Quark cpu)
+{
+ struct definition const * const *list = NULL;
+ const struct definition *field;
+ unsigned int count;
+ int ret;
+ std::string key;
+ Quark perf_quark;
+
+ if (!scope)
+ goto end;
+
+ ret = bt_ctf_get_field_list(event, scope, &list, &count);
+ if (ret < 0)
+ goto end;
+
+ if (count == 0)
+ goto end;
+
+ if (get_current_attribute_value_quark(
+ NULL, "perf", perf_quark)) {
+ do {
+ get_current_attribute_value_string(
+ &perf_quark, "key", key);
+ field = bt_ctf_get_field(event, scope, key.c_str());
+ if (field) {
+ int value = bt_ctf_get_uint64(field);
+ if (bt_ctf_field_get_error())
+ continue;
+ update_perf_value(
+ timestamp, proc, cpu, key, value);
+ }
+ } while (get_current_attribute_value_quark(
+ &perf_quark, "next", perf_quark));
+ }
+
+
+end:
+ return;
+}
+
+void update_perf_counter(unsigned long timestamp, Quark proc,
+ const struct bt_ctf_event *event)
+{
+ Quark cpu;
+ const struct definition *scope;
+
+ cpu = get_cpu(get_cpu_id(event), timestamp);
+
+ scope = bt_ctf_get_top_level_scope(event, BT_STREAM_EVENT_CONTEXT);
+ extract_perf_counter_scope(timestamp, event, scope, proc, cpu);
+
+ scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT);
+ extract_perf_counter_scope(timestamp, event, scope, proc, cpu);
+
+ scope = bt_ctf_get_top_level_scope(event, BT_EVENT_CONTEXT);
+ extract_perf_counter_scope(timestamp, 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;
+ Quark parent, child;
+ unsigned long timestamp;
+
+ timestamp = bt_ctf_get_timestamp(call_data);
+ if (timestamp == -1ULL)
+ goto error;
+
+ pid = get_context_pid(call_data);
+ if ((unsigned long)pid == -1ULL) {
+ goto error;
+ }
+ tid = get_context_tid(call_data);
+ if ((unsigned long)tid == -1ULL) {
+ goto error;
+ }
+ ppid = get_context_ppid(call_data);
+ if ((unsigned long)ppid == -1ULL) {
+ goto error;
+ }
+ comm = get_context_comm(call_data);
+ if (!comm) {
+ goto error;
+ }
+
+ /* find or create the current process */
+ if (!find_process_tid(tid, child))
+ child = add_proc(tid, comm, timestamp);
+ update_proc(timestamp, child, pid, tid, ppid, comm);
+
+ if (pid != tid) {
+ /* find or create the parent */
+ if (!find_process_tid(pid, parent)) {
+ parent = add_proc(pid, comm, timestamp);
+ modify_attribute(timestamp, &parent, "pid", pid);
+ }
+
+ /* attach the parent to the current process */
+ modify_attribute(timestamp, &parent, "threadparent", parent);
+ add_thread(timestamp, parent, child);
+ }
+
+ update_perf_counter(timestamp, child, call_data);
+
+ return BT_CB_OK;
+
+error:
+ return BT_CB_ERROR_STOP;
+}
+
+void init_lttngtop()
+{
+ 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);
+
+ // TODO: real file name
+ std::stringstream ss;
+ ss << "history" << time(NULL) << ".hst";
+ history_file = ss.str();
+ IntervalHistoryProvider *ihp = g_new(IntervalHistoryProvider, 1);
+ new (ihp) IntervalHistoryProvider(history_file);
+ state_system = g_new(StateSystem, 1);
+ new (state_system) StateSystem(ihp);
+
+ /* Create global attributes */
+ state_system->updateCurrentState(
+ state_system->getQuark("nbproc"), 0);
+ state_system->updateCurrentState(
+ state_system->getQuark("nbnewproc"), 0);
+ state_system->updateCurrentState(
+ state_system->getQuark("nbdeadproc"), 0);
+ state_system->updateCurrentState(
+ state_system->getQuark("nbthreads"), 0);
+ state_system->updateCurrentState(
+ state_system->getQuark("nbnewthreads"), 0);
+ state_system->updateCurrentState(
+ state_system->getQuark("nbdeadthreads"), 0);
+ state_system->updateCurrentState(
+ state_system->getQuark("nbfiles"), 0);
+ state_system->updateCurrentState(
+ state_system->getQuark("nbnewfiles"), 0);
+ state_system->updateCurrentState(
+ state_system->getQuark("nbdeadfiles"), 0);
+}
+
+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_iter_pos::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;
+ const char *name;
+ Quark perf;
+ Quark perf_root = state_system->getQuark("perf");
+ static bool first_perf_counter = true;
+
+ 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) {
+ if (!state_system->attributeExists(
+ perf_root, name+5)) {
+ perf = state_system->getQuark(perf_root, name+5);
+ /* by default, sort on the first perf context */
+ if (first_perf_counter) {
+ modify_attribute(0, &perf, "sort", 1);
+ first_perf_counter = false;
+ }
+ modify_attribute(0, &perf, "visible", 1);
+ add_in_sequence(0, perf, perf_root);
+ }
+ }
+ }
+
+ 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