process list filtering

Signed-off-by: Julien Desfossez <jdesfossez@efficios.com>

diff --git a/src/common.c b/src/common.c
index 7a9925e60febc3a8664068a25c83aa9289c0aa0e..ae19f1366e08e3a464b75d67c6693c56d3289193 100644 (file)
--- a/src/common.c
+++ b/src/common.c
@@ -164,7 +164,7 @@ struct processtop* add_proc(struct lttngtop *ctx, int tid, char *comm,
 {
        struct processtop *newproc;
 
-       if (opt_pid && tid != opt_pid)
+       if (opt_tid && !lookup_tid_list(tid))
                return NULL;
 
        /* if the PID already exists, we just rename the process */
@@ -618,3 +618,8 @@ struct tm format_timestamp(uint64_t timestamp)
 
        return tm;
 }
+
+int *lookup_tid_list(int tid)
+{
+       return g_hash_table_lookup(tid_list, (gpointer) &tid);
+}

diff --git a/src/common.h b/src/common.h
index 86f979f7e47ce653a457f69ae5fac60ad964d561..358d692cf7cd5d574e5777f88289977c24039d7d 100644 (file)
--- a/src/common.h
+++ b/src/common.h
@@ -31,7 +31,8 @@ sem_t goodtodisplay, goodtoupdate, timer, pause_sem, end_trace_sem, bootstrap;
 GPtrArray *copies; /* struct lttngtop */
 GHashTable *global_perf_liszt;
 
-int opt_pid;
+char *opt_tid;
+GHashTable *tid_list;
 
 extern int quit;
 
@@ -75,4 +76,6 @@ enum bt_cb_ret handle_statedump_process_state(struct bt_ctf_event *call_data,
 
 struct tm format_timestamp(uint64_t timestamp);
 
+int *lookup_tid_list(int tid);
+
 #endif /* _COMMON_H */

diff --git a/src/lttngtop.c b/src/lttngtop.c
index be323eb5cc6761cf3e70d628c282042d3b2c707c..8a37100fa0ce04fe531fd7623e83c3584bb9e744 100644 (file)
--- a/src/lttngtop.c
+++ b/src/lttngtop.c
@@ -73,6 +73,8 @@ GPtrArray *available_snapshots;
 sem_t metadata_available;
 int reload_trace = 0;
 
+int last_textdump_print_newline = 1;
+
 enum {
        OPT_NONE = 0,
        OPT_HELP,
@@ -86,7 +88,7 @@ static struct poptOption long_options[] = {
        { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL },
        { "textdump", 't', POPT_ARG_NONE, NULL, OPT_TEXTDUMP, NULL, NULL },
        { "child", 'f', POPT_ARG_NONE, NULL, OPT_CHILD, NULL, NULL },
-       { "pid", 'p', POPT_ARG_INT, &opt_pid, OPT_PID, NULL, NULL },
+       { "pid", 'p', POPT_ARG_STRING, &opt_tid, OPT_PID, NULL, NULL },
        { NULL, 0, 0, NULL, 0, NULL, NULL },
 };
 
@@ -171,11 +173,11 @@ enum bt_cb_ret print_timestamp(struct bt_ctf_event *call_data, void *private_dat
        ts_nsec_start = timestamp % NSEC_PER_SEC;
 
        pid = get_context_pid(call_data);
-       if (pid == -1ULL && opt_pid) {
+       if (pid == -1ULL && opt_tid) {
                goto error;
        }
        
-       if (opt_pid && opt_pid != pid)
+       if (opt_tid && !lookup_tid_list(pid))
                goto end;
 
        if (strcmp(bt_ctf_event_name(call_data), "exit_syscall") == 0) {
@@ -184,10 +186,16 @@ enum bt_cb_ret print_timestamp(struct bt_ctf_event *call_data, void *private_dat
                syscall_ret = bt_ctf_get_int64(bt_ctf_get_field(call_data,
                                        scope, "_ret"));
                printf("= %ld\n", syscall_ret);
+               last_textdump_print_newline = 1;
        } else {
+               /* we might have lost the exit_syscall event, so need to
+                * print the newline in this case */
+               if (last_textdump_print_newline == 0)
+                       printf("\n");
                printf("%02d:%02d:%02d.%09" PRIu64 " %d : %s ", start.tm_hour,
                                start.tm_min, start.tm_sec, ts_nsec_start,
                                pid, bt_ctf_event_name(call_data));
+               last_textdump_print_newline = 0;
        }
 
 end:
@@ -438,6 +446,8 @@ static int parse_options(int argc, char **argv)
 {
        poptContext pc;
        int opt, ret = 0;
+       char *tmp_str;
+       int *tid;
 
        pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0);
        poptReadDefaultConfig(pc, 0);
@@ -456,7 +466,14 @@ static int parse_options(int argc, char **argv)
                                opt_child = 1;
                                break;
                        case OPT_PID:
-                               //opt_textdump = 1;
+                               tid_list = g_hash_table_new(g_str_hash, g_str_equal);
+                               tmp_str = strtok(opt_tid, ",");
+                               while (tmp_str) {
+                                       tid = malloc(sizeof(int));
+                                       *tid = atoi(tmp_str);
+                                       g_hash_table_insert(tid_list, (gpointer) tid, tid);
+                                       tmp_str = strtok(NULL, ",");
+                               }
                                break;
                        default:
                                ret = -EINVAL;
@@ -954,7 +971,7 @@ int setup_live_tracing()
 
        strcpy(chan.name, channel_name);
        chan.attr.overwrite = 0;
-       if (opt_pid && opt_textdump) {
+       if (opt_tid && opt_textdump) {
                chan.attr.subbuf_size = 32768;
                chan.attr.num_subbuf = 8;
        } else {
@@ -973,14 +990,12 @@ int setup_live_tracing()
 
        memset(&ev, '\0', sizeof(struct lttng_event));
        //sprintf(ev.name, "sched_switch");
-//     if (!opt_pid) {
-               ev.type = LTTNG_EVENT_TRACEPOINT;
-               if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
-                       fprintf(stderr,"error enabling event : %s\n",
-                                       helper_lttcomm_get_readable_code(ret));
-                       goto error_session;
-               }
-//     }
+       ev.type = LTTNG_EVENT_TRACEPOINT;
+       if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
+               fprintf(stderr,"error enabling event : %s\n",
+                               helper_lttcomm_get_readable_code(ret));
+               goto error_session;
+       }
 
        ev.type = LTTNG_EVENT_SYSCALL;
        if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
@@ -993,16 +1008,14 @@ int setup_live_tracing()
        lttng_add_context(handle, &kctxpid, NULL, NULL);
        kctxtid.ctx = LTTNG_EVENT_CONTEXT_TID;
        lttng_add_context(handle, &kctxtid, NULL, NULL);
-//     if (!opt_pid) {
-               kctxppid.ctx = LTTNG_EVENT_CONTEXT_PPID;
-               lttng_add_context(handle, &kctxppid, NULL, NULL);
-               kctxcomm.ctx = LTTNG_EVENT_CONTEXT_PROCNAME;
-               lttng_add_context(handle, &kctxcomm, NULL, NULL);
-               kctxpid.ctx = LTTNG_EVENT_CONTEXT_VPID;
-               lttng_add_context(handle, &kctxpid, NULL, NULL);
-               kctxtid.ctx = LTTNG_EVENT_CONTEXT_VTID;
-               lttng_add_context(handle, &kctxtid, NULL, NULL);
-//     }
+       kctxppid.ctx = LTTNG_EVENT_CONTEXT_PPID;
+       lttng_add_context(handle, &kctxppid, NULL, NULL);
+       kctxcomm.ctx = LTTNG_EVENT_CONTEXT_PROCNAME;
+       lttng_add_context(handle, &kctxcomm, NULL, NULL);
+       kctxpid.ctx = LTTNG_EVENT_CONTEXT_VPID;
+       lttng_add_context(handle, &kctxpid, NULL, NULL);
+       kctxtid.ctx = LTTNG_EVENT_CONTEXT_VTID;
+       lttng_add_context(handle, &kctxtid, NULL, NULL);
 
        if ((ret = lttng_start_tracing("test")) < 0) {
                fprintf(stderr,"error starting tracing : %s\n",