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
  26 #include <ust/marker.h>
  27 #include <ust/ustctl.h>
  28
  29 #include "tap.h"
  30
  31 static void ustctl_function_tests(pid_t pid)
  32 {
  33         int result, sock;
  34         unsigned int subbuf_size, subbuf_num;
  35         unsigned int new_subbuf_size, new_subbuf_num;
  36         struct marker_status *marker_status, *ms_ptr;
  37         char *old_socket_path, *new_socket_path;
  38         char *tmp_ustd_socket = "/tmp/tmp_ustd_socket";
  39         char *trace = "auto";
  40
  41         printf("Connecting to pid %d\n", pid);
  42
  43         sock = ustctl_connect_pid(pid);
  44         tap_ok(sock > 0, "ustctl_connect_pid");
  45
  46         /* marker status array functions */
  47         result = ustctl_get_cmsf(sock, &marker_status);
  48         tap_ok(!result, "ustctl_get_cmsf");
  49
  50         result = 0;
  51         for (ms_ptr = marker_status; ms_ptr->channel; ms_ptr++) {
  52                 if (!strcmp(ms_ptr->channel, "ust") &&
  53                     !strcmp(ms_ptr->marker, "bar")) {
  54                         result = 1;
  55                 }
  56         }
  57         tap_ok(result, "Found channel \"ust\", marker \"bar\"");
  58
  59         tap_ok(!ustctl_free_cmsf(marker_status), "ustctl_free_cmsf");
  60
  61         /* Get and set the socket path */
  62         tap_ok(!ustctl_get_sock_path(sock, &old_socket_path),
  63                "ustctl_get_sock_path");
  64
  65         printf("Socket path: %s\n", old_socket_path);
  66
  67         tap_ok(!ustctl_set_sock_path(sock, tmp_ustd_socket),
  68                "ustctl_set_sock_path - set a new path");
  69
  70         tap_ok(!ustctl_get_sock_path(sock, &new_socket_path),
  71                "ustctl_get_sock_path - get the new path");
  72
  73         tap_ok(!strcmp(new_socket_path, tmp_ustd_socket),
  74                "Compare the set path and the retrieved path");
  75
  76         free(new_socket_path);
  77
  78         tap_ok(!ustctl_set_sock_path(sock, old_socket_path),
  79                "Reset the socket path");
  80
  81         free(old_socket_path);
  82
  83         /* Enable, disable markers */
  84         tap_ok(!ustctl_set_marker_state(sock, trace, "ust", "bar", 1),
  85                "ustctl_set_marker_state - existing marker ust bar");
  86
  87         /* Create and allocate a trace */
  88         tap_ok(!ustctl_create_trace(sock, trace), "ustctl_create_trace");
  89
  90         tap_ok(!ustctl_alloc_trace(sock, trace), "ustctl_alloc_trace");
  91
  92         /* Get subbuf size and number */
  93         subbuf_num = ustctl_get_subbuf_num(sock, trace, "ust");
  94         tap_ok(subbuf_num > 0, "ustctl_get_subbuf_num - %d sub-buffers",
  95                subbuf_num);
  96
  97         subbuf_size = ustctl_get_subbuf_size(sock, trace, "ust");
  98         tap_ok(subbuf_size, "ustctl_get_subbuf_size - sub-buffer size is %d",
  99                subbuf_size);
 100
 101         /* Start the trace */
 102         tap_ok(!ustctl_start_trace(sock, trace), "ustctl_start_trace");
 103
 104
 105         /* Stop the trace and destroy it*/
 106         tap_ok(!ustctl_stop_trace(sock, trace), "ustctl_stop_trace");
 107
 108         tap_ok(!ustctl_destroy_trace(sock, trace), "ustctl_destroy_trace");
 109
 110         /* Create a new trace */
 111         tap_ok(!ustctl_create_trace(sock, trace), "ustctl_create_trace - create a new trace");
 112
 113         printf("Setting new subbufer number and sizes (doubling)\n");
 114         new_subbuf_num = 2 * subbuf_num;
 115         new_subbuf_size = 2 * subbuf_size;
 116
 117         tap_ok(!ustctl_set_subbuf_num(sock, trace, "ust", new_subbuf_num),
 118                "ustctl_set_subbuf_num");
 119
 120         tap_ok(!ustctl_set_subbuf_size(sock, trace, "ust", new_subbuf_size),
 121                "ustctl_set_subbuf_size");
 122
 123
 124         /* Allocate the new trace */
 125         tap_ok(!ustctl_alloc_trace(sock, trace), "ustctl_alloc_trace - allocate the new trace");
 126
 127
 128         /* Get subbuf size and number and compare with what was set */
 129         subbuf_num = ustctl_get_subbuf_num(sock, trace, "ust");
 130
 131         subbuf_size = ustctl_get_subbuf_size(sock, trace, "ust");
 132
 133         tap_ok(subbuf_num == new_subbuf_num, "Set a new subbuf number, %d == %d",
 134                subbuf_num, new_subbuf_num);
 135
 136
 137         result = ustctl_get_subbuf_size(sock, trace, "ust");
 138         tap_ok(subbuf_size == new_subbuf_size, "Set a new subbuf size, %d == %d",
 139                subbuf_size, new_subbuf_size);
 140
 141         tap_ok(!ustctl_destroy_trace(sock, trace), "ustctl_destroy_trace - without ever starting");
 142
 143         /*
 144          * Activate a non-existent marker, this should be possible as the marker
 145          * can be loaded at a later time.
 146          */
 147         tap_ok(ustctl_set_marker_state(sock, trace, "ustl", "blar", 1) == 0,
 148                "Enable non-existent marker ustl blar");
 149
 150         printf("##### Tests that definetly should work are completed #####\n");
 151         printf("############## Start expected failure cases ##############\n");
 152
 153         tap_ok(ustctl_set_marker_state(sock, trace, "ust","bar", 1),
 154                "Enable already enabled marker ust/bar");
 155
 156         tap_ok(EEXIST == errno,
 157                "Right error code for enabling an already enabled marker");
 158
 159         tap_ok(ustctl_start_trace(sock, trace),
 160                "Start a non-existent trace");
 161
 162         tap_ok(ustctl_destroy_trace(sock, trace),
 163                "Destroy non-existent trace");
 164
 165         exit(tap_status() ? EXIT_FAILURE : EXIT_SUCCESS);
 166
 167 }
 168
 169 int main(int argc, char **argv)
 170 {
 171         int i, status;
 172         pid_t parent_pid, child_pid;
 173
 174         tap_plan(29);
 175
 176         printf("Function tests for ustctl\n");
 177
 178         parent_pid = getpid();
 179         child_pid = fork();
 180         if (child_pid) {
 181                 for(i=0; i<10; i++) {
 182                         trace_mark(ust, bar, "str %s", "FOOBAZ");
 183                         trace_mark(ust, bar2, "number1 %d number2 %d", 53, 9800);
 184                         usleep(100000);
 185                 }
 186
 187                 wait(&status);
 188         } else {
 189                 ustctl_function_tests(parent_pid);
 190         }
 191
 192         exit(status ? EXIT_FAILURE : EXIT_SUCCESS);
 193 }