X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=tests%2Fregression%2Fust%2Fgetcpu-override%2Flttng-ust-getcpu-override-test.c;fp=tests%2Fregression%2Fust%2Fgetcpu-override%2Flttng-ust-getcpu-override-test.c;h=f098e2cf3a751272a405dda3bb9089aa0e936076;hp=0000000000000000000000000000000000000000;hb=568d7e2db7370f57e9612eb9b8c1a6b0bf5213cd;hpb=60f703558c8fede8ca9335f42555feda8a457047

diff --git a/tests/regression/ust/getcpu-override/lttng-ust-getcpu-override-test.c b/tests/regression/ust/getcpu-override/lttng-ust-getcpu-override-test.c
new file mode 100644
index 000000000..f098e2cf3
--- /dev/null
+++ b/tests/regression/ust/getcpu-override/lttng-ust-getcpu-override-test.c
@@ -0,0 +1,84 @@
+/*
+ * lttng-ust-getcpu-override-test.c
+ * Based on lttng-getcpu-override-example.c from LTTng-ust exemple
+ *
+ * Copyright (c) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (c) 2015 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <time.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <lttng/ust-getcpu.h>
+
+int plugin_getcpu(void)
+{
+	/* Generate a sequence based on the number of configurated processor
+	 * by using sequence[i] % nb_configured_processors. Where sequence
+	 * is a static random sequence.
+	 * The expected cpu_id sequence can be regenerated on the test script
+	 * side and compared to the extracted cpu sequence for validation.
+	 * This does no guarantee in absolute the validity of the getcpu
+	 * plugin but provide a strong argument of it's validity.
+	 */
+	static int i = 0;
+	static int seq_seed[256] = {100, 57, 232, 236, 42, 193, 224, 184, 216, 150,
+		92, 91, 108, 118, 55, 243, 65, 101, 209, 0, 147, 36, 29, 34, 49, 188,
+		174, 105, 253, 245, 227, 238, 112, 20, 222, 201, 102, 175, 119, 19, 132,
+		41, 78, 90, 114, 64, 138, 14, 48, 18, 162, 85, 204, 124, 133, 73, 172,
+		106, 241, 126, 28, 104, 111, 21, 127, 219, 9, 244, 237, 189, 59, 214,
+		52, 141, 107, 26, 25, 199, 3, 157, 117, 234, 33, 44, 46, 84, 69, 155,
+		122, 250, 231, 86, 239, 76, 190, 120, 1, 94, 206, 8, 148, 159, 167, 215,
+		164, 31, 217, 61, 71, 125, 68, 109, 195, 177, 95, 82, 142, 182, 129, 87,
+		37, 140, 134, 186, 173, 39, 116, 143, 254, 229, 131, 67, 121, 192, 240,
+		15, 221, 30, 242, 185, 80, 170, 135, 51, 187, 194, 246, 12, 225, 181,
+		137, 211, 228, 88, 218, 27, 233, 161, 77, 252, 123, 93, 220, 248, 205,
+		223, 144, 128, 196, 70, 247, 210, 178, 203, 154, 24, 169, 149, 163, 35,
+		7, 151, 103, 197, 139, 165, 158, 207, 72, 113, 145, 45, 183, 11, 198,
+		43, 81, 230, 97, 96, 2, 66, 213, 146, 179, 22, 58, 54, 38, 160, 200,
+		235, 226, 156, 56, 208, 249, 32, 176, 168, 110, 191, 79, 152, 115, 10,
+		74, 60, 251, 17, 83, 180, 171, 202, 40, 166, 255, 53, 212, 98, 5, 50,
+		99, 4, 89, 13, 63, 6, 136, 153, 23, 16, 47, 130, 75, 62};
+
+	int ret;
+	ret = seq_seed[i] % sysconf(_SC_NPROCESSORS_CONF);
+	i++;
+	i = i % 256;
+	return ret;
+}
+
+void lttng_ust_getcpu_plugin_init(void)
+{
+	int ret;
+
+	ret = lttng_ust_getcpu_override(plugin_getcpu);
+	if (ret) {
+		fprintf(stderr, "Error enabling getcpu override: %s\n",
+			strerror(-ret));
+		goto error;
+	}
+	return;
+
+error:
+	exit(EXIT_FAILURE);
+}