Add trace name handling throughout tracectl, ustcomm and ustcmd
[ust.git] / ustctl / ustctl.c
index 35bea7ae6b3d84f17c1493e378593149f4b6e90c..aad3834a4ccfeb597bc21f22bd95b09de80262ee 100644 (file)
@@ -32,6 +32,7 @@ enum command {
        STOP_TRACE,
        DESTROY_TRACE,
        LIST_MARKERS,
+       LIST_TRACE_EVENTS,
        ENABLE_MARKER,
        DISABLE_MARKER,
        GET_ONLINE_PIDS,
@@ -73,6 +74,7 @@ Commands:\n\
     --enable-marker \"CHANNEL/MARKER\"\tEnable a marker\n\
     --disable-marker \"CHANNEL/MARKER\"\tDisable a marker\n\
     --list-markers\t\t\tList the markers of the process, their\n\t\t\t\t\t  state and format string\n\
+    --list-trace-events\t\t\tList the trace-events of the process\n\
     --force-switch\t\t\tForce a subbuffer switch\n\
 \
 ");
@@ -94,6 +96,7 @@ int parse_opts_long(int argc, char **argv, struct ust_opts *opts)
                        { "stop-trace", 0, 0, STOP_TRACE },
                        { "destroy-trace", 0, 0, DESTROY_TRACE },
                        { "list-markers", 0, 0, LIST_MARKERS },
+                       { "list-trace-events", 0, 0, LIST_TRACE_EVENTS},
                        { "enable-marker", 1, 0, ENABLE_MARKER },
                        { "disable-marker", 1, 0, DISABLE_MARKER },
                        { "help", 0, 0, 'h' },
@@ -166,6 +169,55 @@ int parse_opts_long(int argc, char **argv, struct ust_opts *opts)
        return 0;
 }
 
+static int scan_ch_marker(const char *channel_marker, char **channel,
+                       char **marker)
+{
+       int result;
+
+       *channel = NULL;
+       *marker = NULL;
+
+       result = sscanf(channel_marker, "%a[^/]/%as", channel, marker);
+       if (result != 2) {
+               if (errno) {
+                       PERROR("Failed to read channel and marker names");
+               } else {
+                       ERR("Failed to parse marker and channel names");
+               }
+               if (*channel) {
+                       free(*channel);
+               }
+               if (*marker) {
+                       free(*marker);
+               }
+               return -1;
+       } else {
+               return 0;
+       }
+}
+
+static int scan_ch_and_num(const char *ch_num, char **channel, unsigned int *num)
+{
+       int result;
+
+       *channel = NULL;
+
+       result = sscanf(ch_num, "%a[^/]/%u", channel, num);
+       if (result != 2) {
+               if (errno) {
+                       PERROR("Failed to parse channel and number");
+               } else {
+                       ERR("Failed to parse channel and number");
+               }
+               if (*channel) {
+                       free(*channel);
+               }
+               return -1;
+       }
+}
+
+char *trace = "auto";
+
 int main(int argc, char *argv[])
 {
        pid_t *pidit;
@@ -216,11 +268,13 @@ int main(int argc, char *argv[])
 
        pidit = opts.pids;
        struct marker_status *cmsf = NULL;
+       struct trace_event_status *tes = NULL;
+       unsigned int i = 0;
 
        while(*pidit != -1) {
                switch (opts.cmd) {
                        case CREATE_TRACE:
-                               result = ustcmd_create_trace(*pidit);
+                               result = ustcmd_create_trace(trace, *pidit);
                                if (result) {
                                        ERR("error while trying to create trace with PID %u\n", (unsigned int) *pidit);
                                        retval = EXIT_FAILURE;
@@ -229,7 +283,7 @@ int main(int argc, char *argv[])
                                break;
 
                        case START_TRACE:
-                               result = ustcmd_start_trace(*pidit);
+                               result = ustcmd_start_trace(trace, *pidit);
                                if (result) {
                                        ERR("error while trying to for trace with PID %u\n", (unsigned int) *pidit);
                                        retval = EXIT_FAILURE;
@@ -238,7 +292,7 @@ int main(int argc, char *argv[])
                                break;
 
                        case STOP_TRACE:
-                               result = ustcmd_stop_trace(*pidit);
+                               result = ustcmd_stop_trace(trace, *pidit);
                                if (result) {
                                        ERR("error while trying to stop trace for PID %u\n", (unsigned int) *pidit);
                                        retval = EXIT_FAILURE;
@@ -247,7 +301,7 @@ int main(int argc, char *argv[])
                                break;
 
                        case DESTROY_TRACE:
-                               result = ustcmd_destroy_trace(*pidit);
+                               result = ustcmd_destroy_trace(trace, *pidit);
                                if (result) {
                                        ERR("error while trying to destroy trace with PID %u\n", (unsigned int) *pidit);
                                        retval = EXIT_FAILURE;
@@ -262,7 +316,7 @@ int main(int argc, char *argv[])
                                        retval = EXIT_FAILURE;
                                        break;
                                }
-                               unsigned int i = 0;
+                               i = 0;
                                while (cmsf[i].channel != NULL) {
                                        printf("{PID: %u, channel/marker: %s/%s, "
                                                "state: %u, fmt: %s}\n",
@@ -276,18 +330,51 @@ int main(int argc, char *argv[])
                                ustcmd_free_cmsf(cmsf);
                                break;
 
+                       case LIST_TRACE_EVENTS:
+                               tes = NULL;
+                               if (ustcmd_get_tes(&tes, *pidit)) {
+                                       ERR("error while trying to list "
+                                           "trace_events for PID %u\n",
+                                           (unsigned int) *pidit);
+                                       break;
+                               }
+                               i = 0;
+                               while (tes[i].name != NULL) {
+                                       printf("{PID: %u, trace_event: %s}\n",
+                                              (unsigned int) *pidit,
+                                              tes[i].name);
+                                       ++i;
+                               }
+                               ustcmd_free_tes(tes);
+
+                               break;
                        case ENABLE_MARKER:
                                if (opts.regex) {
-                                       if (ustcmd_set_marker_state(opts.regex, 1, *pidit)) {
-                                               ERR("error while trying to enable marker %s with PID %u\n",
-                                                               opts.regex, (unsigned int) *pidit);
+                                       char *channel, *marker;
+
+                                       if (scan_ch_marker(opts.regex,
+                                                          &channel, &marker)) {
+                                               retval = EXIT_FAILURE;
+                                               break;
+                                       }
+                                       if (ustcmd_set_marker_state(trace, channel, marker, 1, *pidit)) {
+                                               PERROR("error while trying to enable marker %s with PID %u",
+                                                      opts.regex, (unsigned int) *pidit);
                                                retval = EXIT_FAILURE;
                                        }
                                }
+
                                break;
                        case DISABLE_MARKER:
                                if (opts.regex) {
-                                       if (ustcmd_set_marker_state(opts.regex, 0, *pidit)) {
+                                       char *channel, *marker;
+
+                                       if (scan_ch_marker(opts.regex,
+                                                          &channel, &marker)) {
+                                               retval = EXIT_FAILURE;
+                                               break;
+                                       }
+                                       if (ustcmd_set_marker_state(trace, channel, marker, 0, *pidit)) {
                                                ERR("error while trying to disable marker %s with PID %u\n",
                                                                opts.regex, (unsigned int) *pidit);
                                                retval = EXIT_FAILURE;
@@ -297,7 +384,14 @@ int main(int argc, char *argv[])
 
                        case SET_SUBBUF_SIZE:
                                if (opts.regex) {
-                                       if (ustcmd_set_subbuf_size(opts.regex, *pidit)) {
+                                       char *channel;
+                                       unsigned int size;
+                                       if (scan_ch_and_num(opts.regex, &channel, &size)) {
+                                               retval = EXIT_FAILURE;
+                                               break;
+                                       }
+
+                                       if (ustcmd_set_subbuf_size(trace, channel, size, *pidit)) {
                                                ERR("error while trying to set the size of subbuffers with PID %u\n",
                                                                (unsigned int) *pidit);
                                                retval = EXIT_FAILURE;
@@ -307,7 +401,19 @@ int main(int argc, char *argv[])
 
                        case SET_SUBBUF_NUM:
                                if (opts.regex) {
-                                       if (ustcmd_set_subbuf_num(opts.regex, *pidit)) {
+                                       char *channel;
+                                       unsigned int num;
+                                       if (scan_ch_and_num(opts.regex, &channel, &num)) {
+                                               retval = EXIT_FAILURE;
+                                               break;
+                                       }
+
+                                       if (num < 2) {
+                                               ERR("Subbuffer count should be greater or equal to 2");
+                                               retval = EXIT_FAILURE;
+                                               break;
+                                       }
+                                       if (ustcmd_set_subbuf_num(trace, channel, num, *pidit)) {
                                                ERR("error while trying to set the number of subbuffers with PID %u\n",
                                                                (unsigned int) *pidit);
                                                retval = EXIT_FAILURE;
@@ -316,7 +422,7 @@ int main(int argc, char *argv[])
                                break;
 
                        case GET_SUBBUF_SIZE:
-                               result = ustcmd_get_subbuf_size(opts.regex, *pidit);
+                               result = ustcmd_get_subbuf_size(trace, opts.regex, *pidit);
                                if (result == -1) {
                                        ERR("error while trying to get_subuf_size with PID %u\n", (unsigned int) *pidit);
                                        retval = EXIT_FAILURE;
@@ -327,7 +433,7 @@ int main(int argc, char *argv[])
                                break;
 
                        case GET_SUBBUF_NUM:
-                               result = ustcmd_get_subbuf_num(opts.regex, *pidit);
+                               result = ustcmd_get_subbuf_num(trace, opts.regex, *pidit);
                                if (result == -1) {
                                        ERR("error while trying to get_subuf_num with PID %u\n", (unsigned int) *pidit);
                                        retval = EXIT_FAILURE;
@@ -338,7 +444,7 @@ int main(int argc, char *argv[])
                                break;
 
                        case ALLOC_TRACE:
-                               result = ustcmd_alloc_trace(*pidit);
+                               result = ustcmd_alloc_trace(trace, *pidit);
                                if (result) {
                                        ERR("error while trying to alloc trace with PID %u\n", (unsigned int) *pidit);
                                        retval = EXIT_FAILURE;
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