tests/libustctl_function_tests/libustctl_function_tests.c

   1 /* Copyright (C) 2010 Nils Carlson
   2  *
   3  * This library is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU Lesser General Public
   5  * License as published by the Free Software Foundation; either
   6  * version 2.1 of the License, or (at your option) any later version.
   7  *
   8  * This library is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * Lesser General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public
  14  * License along with this library; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  16  */
  17
  18 /* Simple function tests for ustctl */
  19
  20 #include <stdio.h>
  21 #include <unistd.h>
  22 #include <sys/types.h>
  23 #include <sys/wait.h>
  24 #include <errno.h>
  25 #include <string.h>
  26
  27 #include <ust/marker.h>
  28 #include <ust/ustctl.h>
  29
  30 #include "tap.h"
  31
  32 static void ustctl_function_tests(pid_t pid)
  33 {
  34         int result, sock;
  35         unsigned int subbuf_size, subbuf_num;
  36         unsigned int new_subbuf_size, new_subbuf_num;
  37         struct ust_marker_status *marker_status, *ms_ptr;
  38         char *old_socket_path, *new_socket_path;
  39         char *tmp_ustd_socket = "/tmp/tmp_ustd_socket";
  40         char *trace = "auto";
  41
  42         printf("Connecting to pid %d\n", pid);
  43
  44         sock = ustctl_connect_pid(pid);
  45         tap_ok(sock > 0, "ustctl_connect_pid");
  46
  47         /* marker status array functions */
  48         result = ustctl_get_cmsf(sock, &marker_status);
  49         tap_ok(!result, "ustctl_get_cmsf");
  50
  51         result = 0;
  52         for (ms_ptr = marker_status; ms_ptr->channel; ms_ptr++) {
  53                 if (!strcmp(ms_ptr->channel, "ust") &&
  54                     !strcmp(ms_ptr->ust_marker, "bar")) {
  55                         result = 1;
  56                 }
  57         }
  58         tap_ok(result, "Found channel \"ust\", marker \"bar\"");
  59
  60         tap_ok(!ustctl_free_cmsf(marker_status), "ustctl_free_cmsf");
  61
  62         /* Get and set the socket path */
  63         tap_ok(!ustctl_get_sock_path(sock, &old_socket_path),
  64                "ustctl_get_sock_path");
  65
  66         printf("Socket path: %s\n", old_socket_path);
  67
  68         tap_ok(!ustctl_set_sock_path(sock, tmp_ustd_socket),
  69                "ustctl_set_sock_path - set a new path");
  70
  71         tap_ok(!ustctl_get_sock_path(sock, &new_socket_path),
  72                "ustctl_get_sock_path - get the new path");
  73
  74         tap_ok(!strcmp(new_socket_path, tmp_ustd_socket),
  75                "Compare the set path and the retrieved path");
  76
  77         free(new_socket_path);
  78
  79         tap_ok(!ustctl_set_sock_path(sock, old_socket_path),
  80                "Reset the socket path");
  81
  82         free(old_socket_path);
  83
  84         /* Enable, disable markers */
  85         tap_ok(!ustctl_set_ust_marker_state(sock, trace, "ust", "bar", 1),
  86                "ustctl_set_ust_marker_state - existing marker ust bar");
  87
  88         /* Create and allocate a trace */
  89         tap_ok(!ustctl_create_trace(sock, trace), "ustctl_create_trace");
  90
  91         tap_ok(!ustctl_alloc_trace(sock, trace), "ustctl_alloc_trace");
  92
  93         /* Get subbuf size and number */
  94         subbuf_num = ustctl_get_subbuf_num(sock, trace, "ust");
  95         tap_ok(subbuf_num > 0, "ustctl_get_subbuf_num - %d sub-buffers",
  96                subbuf_num);
  97
  98         subbuf_size = ustctl_get_subbuf_size(sock, trace, "ust");
  99         tap_ok(subbuf_size, "ustctl_get_subbuf_size - sub-buffer size is %d",
 100                subbuf_size);
 101
 102         /* Start the trace */
 103         tap_ok(!ustctl_start_trace(sock, trace), "ustctl_start_trace");
 104
 105
 106         /* Stop the trace and destroy it*/
 107         tap_ok(!ustctl_stop_trace(sock, trace), "ustctl_stop_trace");
 108
 109         tap_ok(!ustctl_destroy_trace(sock, trace), "ustctl_destroy_trace");
 110
 111         /* Create a new trace */
 112         tap_ok(!ustctl_create_trace(sock, trace), "ustctl_create_trace - create a new trace");
 113
 114         printf("Setting new subbufer number and sizes (doubling)\n");
 115         new_subbuf_num = 2 * subbuf_num;
 116         new_subbuf_size = 2 * subbuf_size;
 117
 118         tap_ok(!ustctl_set_subbuf_num(sock, trace, "ust", new_subbuf_num),
 119                "ustctl_set_subbuf_num");
 120
 121         tap_ok(!ustctl_set_subbuf_size(sock, trace, "ust", new_subbuf_size),
 122                "ustctl_set_subbuf_size");
 123
 124
 125         /* Allocate the new trace */
 126         tap_ok(!ustctl_alloc_trace(sock, trace), "ustctl_alloc_trace - allocate the new trace");
 127
 128
 129         /* Get subbuf size and number and compare with what was set */
 130         subbuf_num = ustctl_get_subbuf_num(sock, trace, "ust");
 131
 132         subbuf_size = ustctl_get_subbuf_size(sock, trace, "ust");
 133
 134         tap_ok(subbuf_num == new_subbuf_num, "Set a new subbuf number, %d == %d",
 135                subbuf_num, new_subbuf_num);
 136
 137
 138         result = ustctl_get_subbuf_size(sock, trace, "ust");
 139         tap_ok(subbuf_size == new_subbuf_size, "Set a new subbuf size, %d == %d",
 140                subbuf_size, new_subbuf_size);
 141
 142         tap_ok(!ustctl_destroy_trace(sock, trace), "ustctl_destroy_trace - without ever starting");
 143
 144         /*
 145          * Activate a non-existent marker, this should be possible as the marker
 146          * can be loaded at a later time.
 147          */
 148         tap_ok(ustctl_set_ust_marker_state(sock, trace, "ustl", "blar", 1) == 0,
 149                "Enable non-existent marker ustl blar");
 150
 151         printf("##### Tests that definetly should work are completed #####\n");
 152         printf("############## Start expected failure cases ##############\n");
 153
 154         tap_ok(ustctl_set_ust_marker_state(sock, trace, "ust","bar", 1),
 155                "Enable already enabled marker ust/bar");
 156
 157         tap_ok(EEXIST == errno,
 158                "Right error code for enabling an already enabled marker");
 159
 160         tap_ok(ustctl_start_trace(sock, trace),
 161                "Start a non-existent trace");
 162
 163         tap_ok(ustctl_destroy_trace(sock, trace),
 164                "Destroy non-existent trace");
 165
 166         exit(tap_status() ? EXIT_FAILURE : EXIT_SUCCESS);
 167
 168 }
 169
 170 int main(int argc, char **argv)
 171 {
 172         int i, status;
 173         pid_t parent_pid, child_pid;
 174
 175         tap_plan(29);
 176
 177         printf("Function tests for ustctl\n");
 178
 179         parent_pid = getpid();
 180         child_pid = fork();
 181         if (child_pid) {
 182                 for(i=0; i<10; i++) {
 183                         ust_marker(bar, "str %s", "FOOBAZ");
 184                         ust_marker(bar2, "number1 %d number2 %d", 53, 9800);
 185                         usleep(100000);
 186                 }
 187
 188                 wait(&status);
 189         } else {
 190                 ustctl_function_tests(parent_pid);
 191         }
 192
 193         exit(status ? EXIT_FAILURE : EXIT_SUCCESS);
 194 }