start applying warning fixes from Jan Blunck
[ust.git] / libust / tracectl.c
index 2101d5c4c3725e8de547fbf815237cbff988a3b3..b32b501ea9683692bbe7fb82d36b1053790b4c61 100644 (file)
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE
 #include <stdio.h>
 #include <stdint.h>
 #include <signal.h>
@@ -68,7 +69,7 @@ struct blocked_consumer {
        struct list_head list;
 };
 
-static void print_markers(void)
+static void print_markers(FILE *fp)
 {
        struct marker_iter iter;
 
@@ -77,7 +78,7 @@ static void print_markers(void)
        marker_iter_start(&iter);
 
        while(iter.marker) {
-               fprintf(stderr, "marker: %s_%s \"%s\"\n", iter.marker->channel, iter.marker->name, iter.marker->format);
+               fprintf(fp, "marker: %s_%s %d \"%s\"\n", iter.marker->channel, iter.marker->name, (int)imv_read(iter.marker->state), iter.marker->format);
                marker_iter_next(&iter);
        }
        unlock_markers();
@@ -113,7 +114,7 @@ void notif_cb(void)
        }
 }
 
-static int inform_consumer_daemon(void)
+static void inform_consumer_daemon(void)
 {
        ustcomm_request_consumer(getpid(), "metadata");
        ustcomm_request_consumer(getpid(), "ust");
@@ -148,7 +149,7 @@ void process_blocked_consumers(void)
        result = poll(fds, n_fds, 0);
        if(result == -1) {
                PERROR("poll");
-               return -1;
+               return;
        }
 
        list_for_each_entry(bc, &blocked_consumers, list) {
@@ -166,7 +167,7 @@ void process_blocked_consumers(void)
 
                                close(bc->fd_producer);
 
-                               __list_del(bc->list.prev, bc->list.next);
+                               list_del(&bc->list);
 
                                result = ustcomm_send_reply(&bc->server, "END", &bc->src);
                                if(result < 0) {
@@ -194,13 +195,13 @@ void process_blocked_consumers(void)
                        }
                        free(reply);
 
-                       __list_del(bc->list.prev, bc->list.next);
+                       list_del(&bc->list);
                }
        }
 
 }
 
-int listener_main(void *p)
+void *listener_main(void *p)
 {
        int result;
 
@@ -232,7 +233,48 @@ int listener_main(void *p)
                len = strlen(recvbuf);
 
                if(!strcmp(recvbuf, "print_markers")) {
-                       print_markers();
+                       print_markers(stderr);
+               }
+               else if(!strcmp(recvbuf, "list_markers")) {
+                       char *ptr;
+                       size_t size;
+                       FILE *fp;
+
+                       fp = open_memstream(&ptr, &size);
+                       print_markers(fp);
+                       fclose(fp);
+
+                       result = ustcomm_send_reply(&ustcomm_app.server, ptr, &src);
+
+                       free(ptr);
+               }
+               else if(!strcmp(recvbuf, "start")) {
+                       /* start is an operation that setups the trace, allocates it and starts it */
+                       result = ltt_trace_setup(trace_name);
+                       if(result < 0) {
+                               ERR("ltt_trace_setup failed");
+                               return (void *)1;
+                       }
+
+                       result = ltt_trace_set_type(trace_name, trace_type);
+                       if(result < 0) {
+                               ERR("ltt_trace_set_type failed");
+                               return (void *)1;
+                       }
+
+                       result = ltt_trace_alloc(trace_name);
+                       if(result < 0) {
+                               ERR("ltt_trace_alloc failed");
+                               return (void *)1;
+                       }
+
+                       inform_consumer_daemon();
+
+                       result = ltt_trace_start(trace_name);
+                       if(result < 0) {
+                               ERR("ltt_trace_start failed");
+                               continue;
+                       }
                }
                else if(!strcmp(recvbuf, "trace_setup")) {
                        DBG("trace setup");
@@ -240,13 +282,13 @@ int listener_main(void *p)
                        result = ltt_trace_setup(trace_name);
                        if(result < 0) {
                                ERR("ltt_trace_setup failed");
-                               return;
+                               return (void *)1;
                        }
 
                        result = ltt_trace_set_type(trace_name, trace_type);
                        if(result < 0) {
                                ERR("ltt_trace_set_type failed");
-                               return;
+                               return (void *)1;
                        }
                }
                else if(!strcmp(recvbuf, "trace_alloc")) {
@@ -255,7 +297,7 @@ int listener_main(void *p)
                        result = ltt_trace_alloc(trace_name);
                        if(result < 0) {
                                ERR("ltt_trace_alloc failed");
-                               return;
+                               return (void *)1;
                        }
                }
                else if(!strcmp(recvbuf, "trace_start")) {
@@ -273,7 +315,7 @@ int listener_main(void *p)
                        result = ltt_trace_stop(trace_name);
                        if(result < 0) {
                                ERR("ltt_trace_stop failed");
-                               return;
+                               return (void *)1;
                        }
                }
                else if(!strcmp(recvbuf, "trace_destroy")) {
@@ -283,7 +325,7 @@ int listener_main(void *p)
                        result = ltt_trace_destroy(trace_name);
                        if(result < 0) {
                                ERR("ltt_trace_destroy failed");
-                               return;
+                               return (void *)1;
                        }
                }
                else if(nth_token_is(recvbuf, "get_shmid", 0) == 1) {
@@ -306,7 +348,7 @@ int listener_main(void *p)
 
                        if(trace == NULL) {
                                CPRINTF("cannot find trace!");
-                               return 1;
+                               return (void *)1;
                        }
 
                        for(i=0; i<trace->nr_channels; i++) {
@@ -354,7 +396,7 @@ int listener_main(void *p)
 
                        if(trace == NULL) {
                                CPRINTF("cannot find trace!");
-                               return 1;
+                               return (void *)1;
                        }
 
                        for(i=0; i<trace->nr_channels; i++) {
@@ -363,8 +405,8 @@ int listener_main(void *p)
                                if(!strcmp(trace->channels[i].channel_name, channel_name)) {
                                        char *reply;
 
-                                       DBG("the n_subbufs for the requested channel is %d", rchan->n_subbufs);
-                                       asprintf(&reply, "%d", rchan->n_subbufs);
+                                       DBG("the n_subbufs for the requested channel is %zd", rchan->n_subbufs);
+                                       asprintf(&reply, "%zd", rchan->n_subbufs);
 
                                        result = ustcomm_send_reply(&ustcomm_app.server, reply, &src);
                                        if(result) {
@@ -398,7 +440,7 @@ int listener_main(void *p)
 
                        if(trace == NULL) {
                                CPRINTF("cannot find trace!");
-                               return 1;
+                               return (void *)1;
                        }
 
                        for(i=0; i<trace->nr_channels; i++) {
@@ -407,8 +449,8 @@ int listener_main(void *p)
                                if(!strcmp(trace->channels[i].channel_name, channel_name)) {
                                        char *reply;
 
-                                       DBG("the subbuf_size for the requested channel is %d", rchan->subbuf_size);
-                                       asprintf(&reply, "%d", rchan->subbuf_size);
+                                       DBG("the subbuf_size for the requested channel is %zd", rchan->subbuf_size);
+                                       asprintf(&reply, "%zd", rchan->subbuf_size);
 
                                        result = ustcomm_send_reply(&ustcomm_app.server, reply, &src);
                                        if(result) {
@@ -449,7 +491,7 @@ int listener_main(void *p)
 
                        if(trace == NULL) {
                                CPRINTF("cannot find trace!");
-                               return 1;
+                               return (void *)1;
                        }
 
                        for(i=0; i<trace->nr_channels; i++) {
@@ -515,7 +557,7 @@ int listener_main(void *p)
 
                        if(trace == NULL) {
                                CPRINTF("cannot find trace!");
-                               return 1;
+                               return (void *)1;
                        }
 
                        for(i=0; i<trace->nr_channels; i++) {
@@ -529,12 +571,13 @@ int listener_main(void *p)
 
                                        result = ltt_do_put_subbuf(rbuf, lttbuf, consumed_old);
                                        if(result < 0) {
-                                               WARN("ltt_do_put_subbuf: error");
+                                               WARN("ltt_do_put_subbuf: error (subbuf=%s)", channel_name);
+                                               asprintf(&reply, "%s", "ERROR");
                                        }
                                        else {
-                                               DBG("ltt_do_put_subbuf: success");
+                                               DBG("ltt_do_put_subbuf: success (subbuf=%s)", channel_name);
+                                               asprintf(&reply, "%s", "OK");
                                        }
-                                       asprintf(&reply, "%s", "OK", consumed_old);
 
                                        result = ustcomm_send_reply(&ustcomm_app.server, reply, &src);
                                        if(result) {
@@ -551,6 +594,42 @@ int listener_main(void *p)
                        free(channel_name);
                        free(consumed_old_str);
                }
+               else if(nth_token_is(recvbuf, "enable_marker", 0) == 1) {
+                       char *channel_slash_name = nth_token(recvbuf, 1);
+                       char channel_name[256]="";
+                       char marker_name[256]="";
+                       struct marker_iter iter;
+
+                       result = sscanf(channel_slash_name, "%255[^/]/%255s", channel_name, marker_name);
+
+                       if(channel_name == NULL || marker_name == NULL) {
+                               WARN("invalid marker name");
+                               goto next_cmd;
+                       }
+                       printf("%s %s\n", channel_name, marker_name);
+
+                       result = ltt_marker_connect(channel_name, marker_name, "default");
+                       if(result < 0) {
+                               WARN("could not enable marker; channel=%s, name=%s", channel_name, marker_name);
+                       }
+               }
+               else if(nth_token_is(recvbuf, "disable_marker", 0) == 1) {
+                       char *channel_slash_name = nth_token(recvbuf, 1);
+                       char *marker_name;
+                       char *channel_name;
+                       struct marker_iter iter;
+
+                       result = sscanf(channel_slash_name, "%a[^/]/%as", &channel_name, &marker_name);
+
+                       if(marker_name == NULL) {
+                       }
+                       printf("%s %s\n", channel_name, marker_name);
+
+                       result = ltt_marker_disconnect(channel_name, marker_name, "default");
+                       if(result < 0) {
+                               WARN("could not disable marker; channel=%s, name=%s", channel_name, marker_name);
+                       }
+               }
 //             else if(nth_token_is(recvbuf, "get_notifications", 0) == 1) {
 //                     struct ltt_trace_struct *trace;
 //                     char trace_name[] = "auto";
@@ -571,7 +650,7 @@ int listener_main(void *p)
 //
 //                     if(trace == NULL) {
 //                             CPRINTF("cannot find trace!");
-//                             return 1;
+//                             return (void *)1;
 //                     }
 //
 //                     for(i=0; i<trace->nr_channels; i++) {
@@ -780,7 +859,6 @@ static void __attribute__((constructor(1000))) init()
                        ERR("ltt_trace_start failed");
                        return;
                }
-               //start_consumer();
                inform_consumer_daemon();
        }
 
@@ -794,6 +872,8 @@ static void __attribute__((constructor(1000))) init()
 /* This is only called if we terminate normally, not with an unhandled signal,
  * so we cannot rely on it. */
 
+/* This destructor probably isn't needed, because ustd can do crash recovery. */
+#if 0
 static void __attribute__((destructor)) fini()
 {
        int result;
@@ -812,9 +892,6 @@ static void __attribute__((destructor)) fini()
                ERR("ltt_trace_destroy error");
        }
 
-       /* FIXME: wait for the consumer to be done */
-       //DBG("waiting 5 sec for consume");
-       //sleep(5);
-
        destroy_socket();
 }
+#endif
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